FIELD OF THE INVENTION

The invention relates to a luminaire arrangement, and in particular to a luminaire arrangement for a streetlight. Further, the invention relations to a streetlight, comprising such luminaire arrangement, and to a streetlight system.

BACKGROUND OF THE INVENTION

Luminaires for streetlights are known in the art. For instance, W02021001555A1 describes a luminaire head assembly comprising: a body provided with a through-hole between an upper side and a lower side; an upper cover to cover said upper side; a hinge between said upper cover and said body; a photometric unit releasably attached to said body, preferably in a tool-less manner, and at least partially extending in said through- hole, said photometric unit comprising an electronic assembly and a light source; a skirt releasably attached to said body and at least partially surrounding said body; and at least one of: a lower cover supported on the lower side of the body and surrounding said through-hole, and a protection and connection assembly comprising a protective casing and a connection part configured for connecting a lower end of the protective casing to a pole, wherein an upper part of the protective casing is supported on the lower side of the body and surrounding said through-hole.

US2020373682 Al discloses a streetlight-mountable small cell includes a housing having one or more external surfaces exposed to atmospheric conditions when the small cell is deployed on a streetlight. The small cell also includes one or more internal chambers formed in the housing, power supply circuitry, and cellular-band transceiver circuitry. A standardized connector is arranged to pass power to the power supply circuitry when the small cell housing is deployed on the streetlight. At least one antenna-containment structure visually appears integrated with the one or more external surfaces. Each antennacontainment structure is arranged to contain at least one antenna positioned external to the one or more internal chambers, and at least one sub-structure is arranged to route a signal conduit from the at least one antenna to the cellular-band transceiver circuitry. SUMMARY OF THE INVENTION

Luminaires for streetlights have been continuously developed for a number of decades. It seems useful to integrate an antenna system and a radio frequency transceiver with a luminaire for a streetlight, e.g., for the purposes of providing wireless connectivity to individuals in the vicinity of the streetlight and/or to form a connectivity grid. However, it is desired to improve the performance, in terms of communication capabilities, such as via wireless connectivity, as well as to improve the thermal management, maintenance, functionality and/or efficiency of luminaires for streetlights. Especially, it is desired to provide facile adaptation of existing luminaires for streetlights to provide wireless connectivity.

Hence, it is an aspect of the invention to provide an alternative luminaire, which preferably further at least partly obviates one or more of above-described drawbacks. The present invention may have as object to overcome or ameliorate at least one of the disadvantages of the prior art, or to provide a useful alternative.

According to a first aspect, the invention provides a luminaire arrangement comprising a housing arrangement, a light generating device, an antenna system, and a radio system. The housing arrangement may especially comprise a first enclosure and a second enclosure. In embodiments, the second enclosure may be functionally coupled to the first enclosure, such as physically (either directly or indirectly) attached to the first enclosure. Further, the first enclosure may comprise a light exit window and a first canopy, i.e., the light exit window and the first canopy may in embodiments form the first enclosure. In embodiments, the first canopy may comprise a first canopy upper portion. Further, in embodiments the first canopy may comprise a first canopy side portion. Yet further, the second enclosure may comprise a second canopy. The light generating device may, in embodiments, comprise a solid state light source. The solid state light source may be configured to generate light source light. Further, in embodiments, the light generating device may be configured to generate device light. Especially, the light source light may be comprised by the device light. More especially, in embodiments, the light exit window may be transmissive for at least part of the device light. In embodiments, the light generating device may be enclosed by the first enclosure. Especially, the first enclosure may be configured to protect the light generating device against ingress of dust, water, and moisture. In embodiments, the antenna system may be at least partially positioned in the second enclosure. Especially, the antenna system may be at least partially positioned between the first canopy and the second canopy. The antenna system may be configured to transmit and/or receive wireless signals. Therefore, in embodiments, the antenna system may comprise (i) one or more antenna modules for transmitting and/or receiving the wireless signals, and (ii) one or more antenna module housings. Especially, the one or more antenna modules may be enclosed by the one or more antenna module housings. More especially, in embodiments, the antenna module housings may be configured to the one or more antenna modules against ingress of dust, water, and moisture. The radio system may, in embodiments, be positioned in the second enclosure. Especially, the radio system may be positioned between the first canopy and the second canopy. The radio system may especially comprise (i) a radio unit and (ii) a radio unit housing. In embodiments, the radio unit may be communicatively coupled to the antenna system. Especially, the radio unit may be configured to (a) control the transmission of wireless signals transmitted by the antenna system or (b) process wireless signals received by the antenna system. More especially, the radio unit may be configured to (a) control the transmission of wireless signals transmitted by the antenna system and (b) process wireless signals received by the antenna system. Hence, in embodiments, the radio unit may be electrically connected to the antenna system. Furthermore, the radio unit may be enclosed by the radio unit housing. Especially, in embodiments, the radio unit housing may be configured to protect the radio unit against ingress of dust, water, and moisture. In embodiments, the second canopy may comprise one or more openings, especially one or more first openings. Especially, the one or more (first) openings may allow transport of a fluid, such as one or more of air and rainwater, into and/or out of the second enclosure. More especially, at least part of the one or more (first) openings may allow transport of an external fluid into the second enclosure. Furthermore, at least part of the one or more (first) openings may allow transport of fluid from within the second enclosure to the external surroundings. Hence, in specific embodiments, the invention provides a luminaire arrangement comprising a housing arrangement, a light generating device, an antenna system, and a radio system, wherein: the housing arrangement comprises a first enclosure and a second enclosure; wherein the second enclosure is functionally coupled to the first enclosure; wherein the first enclosure comprises a light exit window and a first canopy; wherein the first canopy comprises a first canopy upper portion; wherein the second enclosure comprises a second canopy; wherein the light generating device comprises a solid state light source, wherein the light generating device is configured to generate device light; wherein the light generating device is enclosed by the first enclosure; wherein the light exit window is transmissive for at least part of the device light; wherein the first enclosure is configured to protect the light generating device against ingress of dust, water, and moisture; wherein the antenna system is at least partially positioned in the second enclosure; wherein the antenna system is configured to transmit and/or receive wireless signals; wherein the antenna system comprises (i) one or more antenna modules for transmitting and/or receiving the wireless signals, and (ii) one or more antenna module housings; wherein the one or more antenna modules are enclosed by the one or more antenna module housings, wherein the one or more antenna module housings are configured to protect the one or more antenna modules against ingress of dust, water, and moisture; wherein the radio system is positioned in the second enclosure; wherein the radio system comprises (i) a radio unit and (ii) a radio unit housing; wherein the radio unit is communicatively coupled to the antenna system; wherein the radio unit is configured to (a) control the transmission of wireless signals transmitted by the antenna system and/or (b) process wireless signals received by the antenna system; wherein the radio unit is electrically connected to the antenna system; wherein the radio unit is enclosed by the radio unit housing, wherein the radio unit housing is configured to protect the radio unit against ingress of dust, water, and moisture; and wherein the second canopy comprises one or more (first) openings allowing transport of a fluid into and/or out of the second enclosure.

With such an arrangement it may be possible to incorporate components for providing a wireless connectivity grid into a streetlight system in a facile manner. In embodiments, the luminaire arrangement may be produced as described. In other embodiments, the second enclosure as described herein, may be mounted on existing luminaires comprising the first enclosure (or “an original enclosure”) as described herein. The present invention may further provide the benefit of improved thermal management. The incorporation of one or more first openings in the second canopy provides ventilation for the components contained in the first and/or second enclosure, thereby improving the dissipation of heat generated by the radio unit, the antenna modules and/or the light generating device out of the canopy enclosure by way of providing suitable air flow paths. It is possible to incorporate such openings in the second canopy, due to tactical provision of multiple housings and or enclosures for ingress protection. In other words, delicate components in the luminaire arrangement are, in embodiments, individually protected against ingress of dust, water, and moisture. Especially, the light generating device may be protected by the first enclosure, the antenna modules may be protected by antenna module housings, i.e. different from the first enclosure, and the radio unit may be protected by the radio unit housing, i.e. different from the first enclosure and the antenna module housings. In other words, the first enclosure may be different and outside from the antenna module housings; likewise the antenna module housings may be different and outside from the radio unit housing. Surprisingly, such embodiments as described here improve the thermal management of the system. Hence, in specific embodiments, the present invention may enable mounting of a second canopy on a first canopy for improved thermal management and partitioning of ingress protection in luminaires.

As indicated above, in embodiments the luminaire arrangement may comprise a housing arrangement, a light generating device, an antenna system, and a radio system.

The housing arrangement may especially comprise a first enclosure and a second enclosure. In embodiments, the second enclosure is functionally coupled to the first enclosure. Especially, the second enclosure may be physically attached, such as glued or bolted, to the first enclosure. The second enclosure and first enclosure may be functionally coupled (such as physically coupled) in a direct manner or in an indirect manner, i.e., through other components configured in between the first enclosure and second enclosure, see also further below.

The first enclosure (or “original enclosure”) may, in embodiments, comprise a light exit window and a first canopy. Especially, the first canopy may have a hollow shape, such as a hollow cuboid shape, a hollow prismatic shape, a hollow cone shape, or a hollow spheroid shape; however, other shapes may be possible as well. Hence, the first canopy may comprise a first canopy upper portion and a first canopy side portion. In other words, the first canopy upper portion may be the upper portion of the first canopy. Likewise, the first canopy side portion may be the side portion of the first canopy. In embodiments, the first canopy and the light exit window may form the first enclosure, especially, the first canopy upper portion, the first canopy side portion, and the light exit window may form the boundaries of the first enclosure.

The second enclosure may, in embodiments, comprise a second canopy. Especially, the second canopy may have a hollow shape, such as a hollow cuboid shape, a hollow prismatic shape, a hollow cone shape, or a hollow spheroid shape; however, other shapes may be possible as well. Hence, the second canopy may comprise a second canopy upper portion and a second canopy side portion. In other words, the second canopy upper portion may be the upper portion of the second canopy. Likewise, the second canopy side portion may be the side portion of the second canopy.

In embodiments, the second canopy and the first enclosure, especially an upper part of the first enclosure, may be functionally coupled, such as physically (or “mechanically”) attached (see also above and below). Hence, in embodiments the second canopy and part of the first enclosure may form the second enclosure. Thus, in such embodiments, the second enclosure may be a volume defined by a set of boundaries. Especially, the second canopy upper portion, the second canopy side portion, and the upper part of the first enclosure may form the boundaries of the second enclosure. However, in other embodiments, the boundaries of the second enclosure may at least partially be formed by the second canopy upper portion and the second canopy side portion, whereas the other part of the boundaries of the second enclosure may be formed by other components, as described further below.

In embodiments, the first canopy and the second canopy may comprise the same material. Especially, the first canopy and the second canopy may comprise a material selected from the group comprising (bio)plastic, glass, and metal. In other embodiments, the first canopy and the second canopy may comprise a different material individually selected from the group comprising (bio)plastic, glass, and metal.

Furthermore, the first canopy and the second canopy may, in embodiments, have substantially the same shape. However, in other embodiments, the first canopy and the second canopy may have a different shape. The first canopy and the second canopy may especially be configured such, that the first canopy upper portion and the second canopy upper portion may be facing the same direction relative to an axis (Ao) of the luminaire arrangement. The axis (Ao) may be an optical axis (see also below).

Yet further, in embodiments, the first canopy may have a first cross-sectional dimension (e.g. selected from a diameter and a perimeter) defined perpendicular to the axis (Ao). Likewise, in embodiments, the second canopy may have a second cross-sectional dimension (e.g. selected from a diameter and a perimeter) defined perpendicular to the axis (Ao). In embodiments, the first cross-sectional dimension and the second cross-sectional dimension may be individually selected from the range of 5-150 cm, such as 5-100 cm, such as from the range of 5-50 cm. In other embodiments, the first cross-sectional dimension and the second cross-sectional dimension may be individually selected from the range of 5-35 cm, like from the range of 10-25 cm, especially from the range of 15-25 cm. In specific embodiments, the first canopy and the second canopy may have substantially the same cross- sectional dimension. However, in other embodiments, the first canopy and the second canopy may have different cross-sectional dimensions. The cross-sectional dimension may be a largest cross-sectional dimension. Especially, when comparing the cross-sectional dimensions of the first canopy and of the second canopy, the dimensions are configured parallel to each other (and perpendicular to the axis (Ao)). Here, the term “diameter” may also refer to an equivalent circular diameter. The equivalent circular diameter (or ECD) (or “circular equivalent diameter”) of an (irregularly shaped) two-dimensional shape is the diameter of a circle of equivalent area. For instance, the equivalent circular diameter of a square with side a is 2*a*SQRT( 1/jr). For a circle, the diameter is the same as the equivalent circular diameter. Would a circle in an xy- plane with a diameter D be distorted to any other shape (in the xy-plane), without changing the area size, than the equivalent circular diameter of that shape would be D.

Herein, the axis (Ao) of the luminaire arrangement may for example coincide with an optical axis. Especially, the (optical) axis (Ao) of the luminaire arrangement may be defined as an imaginary line that defines a path through the luminaire arrangement along which device light propagates out of the luminaire arrangement. Especially, the (optical) axis (Ao) may coincide with the direction of device light with the highest radiant flux.

Further, in embodiments, the first enclosure may comprise the light generating device. Especially, the light generating device may be configured between the first canopy and the light exit window. Hence, in such embodiments, the light generating device may be enclosed by the first enclosure. The first enclosure may especially, in embodiments, be configured to protect the light generating device against ingress of dust, water, and moisture.

Yet further, in embodiments, the light generating device may comprise a light source, especially a solid state light source, such as a light emitting diode (LED). The light source may be configured to generate light source light. Note that the term “a light source” may also refer to a plurality of light sources, see also further below. Further, in embodiments, the light generating device may be configured to generate device light. Especially, the device light may comprise (at least part of) the light source light. The light exit window may especially be transmissive for at least part of the device light, such as all of the device light. Hence, the light exit window may comprise a window panel that may be at least partially translucent, especially at least partially transparent. The light exit window may, for example, comprise a material selected from the group comprising polymeric material and glass. Furthermore, in embodiments, the light exit window may comprise a plurality of smaller light exit windows (or “plates”). For example, in embodiments, the light exit window may comprise a four sided inverse cone or pyramid shaped exit window. In embodiments, the light exit window may have a shape selected from the group comprising a round shape, an elliptical shape, a hexagonal shape, and a rectangular shape. Further, in embodiments, the first enclosure may (also) comprise additional optics, such as for example a light mixing chamber or one or more reflectors. Such optics may provide features such as beam shaping.

In embodiments, the device light may be visible light, i.e., light with spectral power in the visible wavelength range (380-780 nm). Especially, the device light may be white light. More especially, in embodiments, the white light may have a correlated color temperature selected from the range of 1800-6500 K and/or a color rendering index of at least 70, such as at least 80. However, in other embodiments, the device light may also be colored light. In yet other embodiments, the device light may have a wavelength in one of the UV and IR wavelength range. Hence, the luminaire arrangement may be configured to provide device light. In embodiments, the spectral power distribution of the device light may be controllable.

In embodiments, the luminaire arrangement may also be configured to provide means for transmission and reception of wireless signals. Therefore, in embodiments, the antenna system is configured to transmit and/or receive wireless signals. Especially, in embodiments, the antenna system may comprise (i) one or more antenna modules, and (ii) one or more antenna module housings. The one or more antenna modules may especially be configured for at least one of transmitting wireless signals and receiving wireless signals, such as both transmitting and receiving wireless signals. In embodiments, an antenna module may comprise an electronic chip. For example, the antenna module may comprise the electronic chip configured onto a printed circuit board (PCB). Further, in embodiments, the one or more antenna modules may be enclosed by the one or more antenna module housings. For example, in embodiments, each antenna module may be enclosed by a respective antenna module housing. In other embodiments, one or more antenna modules may be enclosed by a single antenna module housing. In other words, the antenna system may comprise (i) a plurality of n antenna modules with n>l, and (ii) a plurality of m antenna module housings with m>l. In embodiments, n may be equal to m, i.e., n=m. Hence, in such embodiments, each of the n antenna module may be enclosed in a separate antenna module housing. However, in other embodiments, n may be unequal to m, i.e., i m. Hence, in such embodiments, a cluster of the n antenna modules may be enclosed in a single antenna module housing. Especially, the one or more antenna module housings may provide ingress protection for the one or more antenna modules. Hence, in embodiments, the one or more antenna module housings may be configured to protect the one or more antenna modules against ingress of dust, water, and moisture. In embodiments, an antenna module housing, comprising an antenna module, may have an antenna cross-sectional area (AA), defined in a plane (about) parallel to the (optical) axis (Ao). Especially, the antenna cross-sectional area (AA) may be selected from the range of 1-15 cm ² , such as from the range of 2-10 cm ² .

The antenna system may, in embodiments, at least partly be positioned in the second enclosure. Especially, at least part of the antenna system, such as at least part of the one or more antenna modules, enclosed by the one or more antenna module housings, may be positioned in the second enclosure. More especially, at least part of the antenna system, such as at least part of the one or more antenna modules, enclosed by the one or more antenna module housings, may be positioned between the first canopy and the second canopy.

The second enclosure may, in embodiments, also comprise the radio system. In other words, the radio system may be positioned in the second enclosure. Especially, in embodiments, the radio system may be configured between the first canopy and the second canopy.

In embodiments, the radio system may comprise (i) a radio unit, and (ii) a radio unit housing. The term “radio unit” may be equally substituted by terms such as “wireless module” or “radio frequency transceiver”. In embodiments, the radio unit may be enclosed by the radio unit housing. The radio unit housing may thus provide ingress protection for the radio unit. Hence, in embodiments, the radio unit housing may be configured to protect the radio unit against ingress of dust, water, and moisture.

As the radio unit housing, the one or more antenna modules housing, and the first enclosure are all separate enclosures, they may all separately provide protection against ingress of dust, water, and moisture to different components in the luminaire arrangement. Hence, the radio unit housing, the one or more antenna modules housing, and the first enclosure may contribute to partitioning of ingress protection in the luminaire arrangement, such that each component may be protected independently of the presence of the other components.

The above mentioned radio unit may, in embodiments, be functionally coupled to the antenna system. Especially, the radio unit may be at least one of electrically and communicatively coupled to the antenna system, such as both. In other words, the radio unit and the antenna system may have functions interacting with one another. Especially, in embodiments, the radio unit may have at least one of a controlling or processing function, such as both a controlling and processing function. Herein a controlling function may refer to controlling a transmission of wireless signals, such as electromagnetic signals like radio signals. A processing function may refer to processing of received wireless signals. More especially, the radio unit may be configured to (a) control the transmission of wireless signals transmitted by the antenna system, and to (b) process wireless signals received by the antenna system.

In embodiments, the radio unit may, for instance, comprise a modem, a processing unit and/or an input/output unit. Suitable examples of radio units for handling and processing wireless signals are well established in the art, and have not been described in detail for the sake of clarity.

The wireless signals controlled by the radio unit may operate according to any known wireless communication protocol. Suitable wireless communication protocols include an infrared link, ZigBee, Bluetooth, a wireless local area network protocol such as in accordance with the IEEE 802.11 standards, a 2G, 3G, 4G, 5G or 6G telecommunication protocol, and so on. Other formats will be readily apparent to the person skilled in the art. In specific embodiments, the radio unit may be configured to operate according to a 4G or higher telecommunication protocols. Likewise, the antenna module may be configured to transmit and/or receive wireless signals, such as infrared link, ZigBee, Bluetooth, a wireless local area network protocol such as in accordance with the IEEE 802.11 standards, a 2G, 3G, 4G, 5G or 6G telecommunication protocol.

In some examples, the wireless signals transmitted and/or received by the radio system and antenna system are unrelated to the operation of the light generating device. In particular examples, the one or more antenna modules and the radio unit may act as a node for a network of nodes for providing wireless coverage within an area covered by the network of nodes. Thus, the one or more antenna modules and the radio unit may be configured to act as a node as part of a wireless mesh network. Of course, in other examples, the wireless signals transmitted and/or received by the radio system and antenna system may be related to the operation of the light generating device. Thus, the one or more antenna modules and the radio unit may act together to provide information for controlling one or more parameters or properties of the light generating device.

The radio system and the light generating device may generate heat (during operation). Also the antenna system may generate heat. Accumulating heat may have a negative impact on the performance of these components, and hence thermal management is required. The accumulation of heat may be prevented by providing means for the passive diffusion of heat. In embodiments, the second enclosure, especially the second canopy may comprise one or more openings, especially one or more first openings. The one or more first openings may allow transport of an external fluid, such as (cool) air, into the second enclosure. Inside the second enclosure, the fluid may be heated by the radio system, the antenna system (and optionally also by the light generating device in the first enclosure). The one or more first openings may then allow transport of the (heated) fluid out of the second enclosure towards the external environment. The fluid may, in embodiments, comprise one or more of air and rainwater. Hence, in embodiments, the one or more first openings may comprise one or more air inlets and outlets. As elements like the antenna modules and the radio unit each have their own housings, protection for dust, water, and moisture ingress, the second enclosure is not necessarily closed. In contrast, deliberate application of openings may allow cooling via air and/or rainwater.

In embodiments, the one or more first openings may especially be configured in at least the second canopy upper portion. Hence, in embodiments, the second canopy may comprise a second canopy upper portion wherein one or more of the one or more first openings may be arranged in the second canopy upper portion.

Surprisingly, such embodiments are beneficial as the one or more first openings in the second canopy upper portion improve the thermal management of the luminaire arrangement. External (cool) fluid (such as air) is allowed to enter the luminaire arrangement, through the one or more first openings in the second canopy, where it is heated by the components of the arrangement. Gases in the heated fluid then expand, causing the density of the fluid to decrease. The less dense heated fluid subsequently floats on top of denser (colder) fluid creating a buoyant force. This buoyant force causes the heated fluid to rise up and efficiently exit the luminaire arrangement through the one or more first openings arranged in the second canopy upper portion. More especially, the one or more first openings may allow transport of a fluid, such as one or more of air and rainwater, into and/or out of the second enclosure (especially in case the second canopy comprises a second canopy upper portion wherein one or more of the one or more first openings are arranged in the second canopy upper portion).

Leaving one or more openings in the second canopy is possible, because of the partitioning of the ingress protection. By leaving one or more openings in the second canopy the second canopy ingress of dust, water, and moisture may enter the second enclosure, but such ingress may not affect components such as the radio unit and the one or more antenna modules, due to the separate ingress protection provided by their respective housings.

In embodiments, the second canopy upper portion may also comprise a plurality of x first openings. Especially, in embodiments, x may be at least 3, especially at least 5, such as at least 10, like at least 15, especially at least 20. More especially, in embodiments, x may be at most 500, such as at most 300, like at most 100, especially at most 50. The plurality of x first openings may, in embodiments, be arranged in an ordered design, such as in a star-shape, a mesh-shape, or a partial ring-shape design. However, in other embodiments, the plurality of x first openings may also be arranged randomly. Hence, in specific embodiments, the second canopy upper portion may comprise a plurality of x first openings, wherein x>5. In further specific embodiments, the plurality of x first openings may be arranged in a star-shape, a mesh-shape or a partial ring-shape design.

In embodiments, the second canopy side portion may (also) comprise a second opening, especially, an antenna module opening. As mentioned above, the one or more antenna modules may at least partially be configured in the second enclosure. In embodiments, the second canopy side portion may comprise a second opening (or “an antenna module opening”) to allow protrusion of the second canopy by at least part of at least one antenna module. Hence, in specific embodiments, the second canopy side portion may comprise an antenna module opening, wherein at least one antenna module may at least partially be configured in the antenna module opening.

In embodiments, the antenna module opening forms a transition fit to the antenna module. This provides essentially no clearance between the antenna module and the antenna module opening. Would there, however, be clearance between the antenna module and the antenna module opening, such clearance may also be considered a first opening.

Such embodiments may provide the benefit of improved wireless connectivity. Materials, such as the second canopy, provide a barrier, which reduces the efficiency of transmission and reception of wireless signals between the antenna module and an external device or apparatus. Incorporating an antenna module opening in the second canopy, allowing the antenna module to protrude the second canopy, the negative effect of the barrier is reduced substantially or even removed completely. Hence, allowing the antenna module to protrude the second canopy provides improved wireless connectivity.

In embodiments, the antenna module opening may have an opening cross- sectional area (AB) defined (about) parallel to the (optical) axis (Ao). Especially, the opening cross-sectional area (AB) may be equal to, or (slightly) larger than the antenna cross-sectional area (AA), i.e., AB>AA. Especially, in embodiments, the opening cross-sectional area (AB) may be at most 20% larger than the antenna cross-sectional area (AA), such as at most 10% larger than the antenna cross-sectional area (AA), like at most 5% larger than the antenna cross-sectional area (AA), especially at most 1% larger than the antenna cross-sectional area (AA). Hence, in embodiments, the antenna module opening may have a shape conformal to the shape of the antenna module housing. However, this may not necessarily be the case in every embodiment.

The term “an antenna module opening” may also refer to one or more antenna module openings, i.e., the second canopy side portion may, in embodiments, (even) comprise one or more antenna module openings. For example, in embodiments, the second canopy side portion may comprise a first antenna module at least partially configured in a first antenna module opening. In such embodiments, the second canopy side portion may also comprise a second antenna module at least partially configured in a second antenna module opening. In yet other embodiments, the second canopy side portion may (even) comprise a third antenna module at least partially configured in a third antenna module opening, and a fourth antenna module at least partially configured in a fourth antenna module opening etc. etc. Especially, the second canopy side portion may, in embodiments, comprise an antenna module opening for each antenna module, i.e., the second canopy side portion may comprise p antenna module openings, where p may be smaller than or equal to the number of antenna modules, i.e., p<n. In embodiments where the number of antenna module openings is smaller than the number of antenna modules, one or more of the following may apply: (i) one or more of the antenna modules may not protrude the second canopy, or (ii) one or more of the antenna modules may protrude the second canopy through the same antenna module opening. Further, in embodiments, the one or more antenna module openings may be comprised by the one or more openings in the second canopy, as described above.

The second canopy side portion may further, in embodiments, comprise a cavity. Especially, the cavity may protrude into the second enclosure. In embodiments, the cavity may comprise the above mentioned antenna module opening. Hence, in embodiments, an antenna module may be at least partially configured in the cavity. Hence, the cavity may be configured to host at least part of an antenna module.

In specific embodiments, the second canopy side portion may comprise a cavity, wherein the cavity may comprise the antenna module opening; wherein the at least one antenna module may be at least partially configured in the cavity; wherein the cavity may protrude into the second enclosure. In embodiment, the luminaire arrangement may (even) comprising a plurality of antenna modules and a plurality of cavities, wherein each of the antenna modules may be at least partially configured in a respective cavity. For instance, second canopy side portion may comprise four cavities, each comprising an antenna module opening. Note that the second canopy may not necessarily comprise antenna module openings. Antenna module opening may be useful for propagation of radio signals, but may e.g. not be necessary when the second canopy comprises a material allowing relatively good propagation of radio signals. Hence, when the second canopy comprises a metal material, then the second canopy may comprise antenna module openings. However, when the second canopy comprises a polymeric material, the second canopy may comprise or may not comprise antenna module openings. Beyond that, the second canopy may anyhow comprise openings, but these are configured for allowing transport of a fluid into or out of the second enclosure.

The second canopy may have openings having cross-sectional areas selected from the range of 1 mm ² - 20 cm ² , such as selected from the range of 0.5-15 cm ² . Different openings may have different sizes. In embodiments, the second canopy may have a cross- sectional area, defined perpendicular to the (optical) axis. In embodiments, a total cross- sectional area of all the openings may be in the range of 5-90% of the cross-sectional area of the second canopy, especially of the second canopy upper portion. Especially, the total cross- sectional area of all the first openings (being in the second canopy upper portion and/or in the second canopy side portion) may be at least 10%, such as at least 20%, especially at least 30%. The higher the percentage is, the better the cooling may be. More especially, the total cross-sectional area of all the openings may be equal to or less than 80%, such as equal to or less than 70%, especially equal to or less than 60%. A lower percentage may provide mechanical strength and protection.

Further, in some embodiments, the second canopy side portion may (even) have no first openings (only the one or more antenna module openings). Especially more than 80% of the total cross-section areal of the first openings may be comprised by the upper portion of the second canopy.

It may be desired to provide transmission and reception of wireless signals in a total orientation of 360° relative to the luminaire arrangement. Here the total orientation of 360° may especially be defined in a (substantially) horizontal plane relative to the luminaire arrangement. Therefore, in a specific embodiment, the antenna system may comprise at least four antenna modules. Especially, the at least four antenna modules may be directional antenna modules with an individual range (or “line of sight”) comprising an angle (a) of at least 90°, such as at least 120°. More especially, the at least four antenna modules may be arranged facing different directions relative to the luminaire arrangement. Herein, the term “directional” may refer to being configured to perform a function in a direction with a specified orientation and range (comprising an angle (a)). Hence, in specific embodiments, the antenna system may comprise at least four directional antenna modules, wherein the at least four directional antenna modules may be configured to transmit and/or receive the wireless signals in a total orientation of 180-360°, such as especially a total orientation of 360° defined in a horizontal plane relative to the luminaire arrangement. With n antenna modules, especially a may be about 360°/n.

Hence, in embodiments, the one or more antenna modules may be arranged facing different directions relative to the luminaire arrangement. Additionally or alternatively, the one or more antenna modules, especially the one or more antenna module housings, may be individually arranged at a distance Di from each other. Especially, distance Di, may refer to a shortest distance between adjacent antenna modules.

Furthermore, in embodiments, the one or more antenna modules, especially the one or more antenna module housings, may be individually arranged at a distance D from the radio unit. Especially, D may be at least 1 cm, such as at least 2 cm, like at least 5 cm. More especially, in embodiments, Di may be equal to D, i.e., Di=D. However, this may not necessarily be the case, i.e., in other embodiments, Di D. In specific embodiments, the one or more antenna module housings may be arranged at a distance D from the radio unit, wherein D>1 cm. With such embodiments, the thermal management of the luminaire arrangement may be improved. Especially the distance D may allow for ventilation by way of providing a passage for the (cooling) fluid, and thereby provide the dissipation of heat generated by the radio unit, the one or more antenna modules.

The luminaire arrangement may comprise ingress protected electrical connectors, i.e., electrical connectors with ingress protection. Especially, the ingress protected electrical connectors may be configured to traverse the distance D between the one or more antenna module housings and the radio unit. More especially, the ingress protected electrical connectors may be configured to electrically connect the one or more antenna modules and the radio unit. Furthermore, in embodiments, the ingress protected electrical connectors may be configured to protect the electrical connectors against ingress of dust, water, and moisture.

Further, in embodiments, the luminaire arrangement may comprise a first driver. The first driver may especially be functionally coupled to the light generating device. Especially, the first driver may be configured to control the light generating device. The first driver may therefore, in embodiments, be arranged in the first enclosure (with the light generating device). Especially, in embodiments, the first driver may be comprised by the light generating device. However, in other embodiments, the first driver may be separate from (but coupled to) the light generating device. The first enclosure may, in either such embodiments, be configured to protect the first driver against ingress of dust, water, and moisture. Hence, in specific embodiments, the luminaire arrangement may comprise a first driver, wherein the first driver may be arranged in the first enclosure; wherein the first driver may be functionally coupled to the light generating device.

Yet further, in embodiments, the luminaire arrangement may comprise a second driver. The second driver may especially be functionally coupled to the radio system. Especially, the second driver may be configured to control the radio unit. The second driver may, in embodiments, be arranged in the first enclosure. For example, in embodiments, the second driver may essentially be the same as the first driver. In other embodiments, the second driver may be arranged in the second enclosure. Especially, in such embodiments, the second driver may be comprised by the radio system. However, in other embodiments, the second driver may be separate from (but coupled to) the radio system. In embodiments where the second driver may be arranged in the first enclosure, the first enclosure may be configured to protect the second driver against ingress of dust, water, and moisture. In embodiments, where the second driver may be arranged in the second enclosure, the second driver may be comprised by a second driver housing. Especially, the second driver housing may be configured to protect the second driver against ingress of dust, water, and moisture. In yet other embodiments, the second driver may be partially arranged in the first enclosure and partially arranged in the second enclosure. Hence, in specific embodiments, the luminaire arrangement may comprise a second driver, wherein the second driver may be arranged in the first enclosure or the second enclosure; wherein the second driver may be functionally coupled to the radio system.

In embodiments, especially such as described above, the luminaire arrangement may comprise a power splitter. The power splitter may be configured to split power provided to the luminaire arrangement into separate parts. Especially, in embodiments, the power splitter may be configured to direct part of the power provided to the luminaire arrangement to the light generating device, especially via the first driver. In such embodiments, the power splitter may be configured to direct another part of the power provided to the luminaire arrangement to the radio system, especially via the second driver.

In embodiments, the power splitter may be arranged at least partially in the first enclosure and at least partially in the second enclosure. However, in other embodiments, the power splitter may be arranged in either the first enclosure or the second enclosure. For example, in embodiments, the power splitter may be comprised by the radio system, and may be functionally coupled to the light generating device. In other embodiments, the power splitter may be comprised by the light generating device, and may be functionally coupled to the radio system. Preferably, the power splitter may be arranged in the first enclosure (or “original enclosure”). In embodiments where the power splitter may be arranged in the first enclosure, the first enclosure may be configured to protect the power splitter against ingress of dust, water, and moisture. In embodiments, where the power splitter may be arranged in the second enclosure, the power splitter may be comprised by a power splitter housing. Especially, the power splitter housing may be configured to protect the power splitter against ingress of dust, water, and moisture. Hence, in specific embodiments, the luminaire arrangement may comprise a power splitter, wherein the power splitter may be configured to direct part of power provided to the luminaire arrangement to the light generating device and to direct another part to the radio system. When configured in the first enclosure, protection against dust, water, and moisture may anyhow essentially be guaranteed.

In embodiments, the ingress protected electrical connectors as mentioned above may also be configured to electrically connect the first driver, the second driver, and the power splitter. Hence, the ingress protected electrical connectors may protrude through the first canopy in order to electrically connect components in the first enclosure (such as the light generating device) to components from the second enclosure (such as the radio unit). Therefore, sealing is desired to keep the first enclosure ingress protected while the ingress protected electrical connectors protrude through the first canopy. The sealing may provide the ingress protection against dust, water, and moisture, as herein described.

Components such as the light generating device, the radio unit and the one or more antenna modules may all generate heat. When the luminaire arrangement cannot dissipate the generated heat sufficiently, the excess heat may have a negative impact on the performance of the aforementioned components. Therefore, it may be beneficial to provide improved thermal management for the luminaire arrangement. Hence, the luminaire arrangement may further comprise a heatsink. A heatsink may have specific features that aid the thermal management of the luminaire arrangement. For example, a heatsink may comprise a thermally conductive material, such as a metal. Furthermore, a heatsink may comprise a plurality fins.

Heatsinks are known in the art. The term “heatsink” (or heat sink) may especially be a passive heat exchanger that transfers the heat generated by device, such as an electronic device or a mechanical device, to a fluid (cooling) medium, often air or a liquid coolant. Thereby, the heat is (at least partially) dissipated away from the device. A heat sink is especially designed to maximize its surface area in contact with the fluid cooling medium surrounding it. Hence, especially a heatsink may comprise a plurality of fins. For instance, the heatsink may be a body with a plurality of fins extending thereof. A heatsink especially comprises (more especially consists of) a thermally conductive material. The term “heatsink” may also refer to a plurality of (different) heatsinks.

In embodiments, the first canopy may comprise a first heatsink. In specific embodiments, the first heatsink may essentially be comprised by the first canopy. Hence, in embodiments, the first canopy may comprise a thermally conductive material, such as a metal. In other embodiments, the first heatsink may be a separate component arranged in the first enclosure. Especially, the solid state light source may be arranged on the first heatsink. Hence, the solid state light source may be configured in thermal contact with the first heatsink.

Likewise, in embodiments, the second canopy may comprise a second heatsink. In specific embodiments, the second heatsink may essentially be comprised by the second canopy. Hence, in embodiments, the second canopy may comprise a thermally conductive material, such as a metal. In other embodiments, the second heatsink may be a separate component arranged in the second enclosure. Especially, the second heatsink may be configured in thermal contact with at least one of: at least part of the antenna system and at least part of the radio system, such as in thermal contact with at least part of both the antenna system and the radio unit. More especially, in embodiments, the second heatsink may be configured in thermal contact with one or more of the one or more antenna modules, the radio unit, the power splitter, the first driver, the second driver, and the first heatsink. Hence, in embodiments, the second canopy may especially be in thermal contact with the first canopy.

Instead of or in addition to heatsinks, also other thermally conductive elements may be applied, like heat spreaders or two-phase cooling devices (such as a heat pipe or a vapor chamber).

The first canopy and the second canopy may thus, such as in embodiments mentioned above, be thermally conductive. Especially, in embodiments, the second canopy may be configured in thermal contact with the first canopy.

Further, in embodiments, the radio system may comprise a (separate) third heatsink. Especially, the radio unit may be arranged on the third heatsink. Yet further, in embodiments, the antenna system may comprise a (separate) fourth heatsink. Especially, (at least part ol) the one or more antenna modules may be arranged on the fourth heatsink. Likewise, the power splitter may, in embodiments, comprise a (separate) fifth heatsink. Hence, in specific embodiments, the first canopy may comprise a first heatsink; wherein the solid state light source may be arranged on the first heatsink; and the second canopy may comprises a second heatsink; wherein the second heatsink may be configured in thermal contact with at least part of the antenna system and/or at least part of the radio system; wherein the radio system may comprise a third heatsink, wherein the radio unit may be arranged on the third heatsink, and wherein the antenna system may comprise a fourth heatsink, wherein the antenna modules may be arranged on the fourth heatsink.

In embodiments, the third heatsink may be comprised by the second heatsink. Especially, in embodiments, the third heatsink may essentially be the second heatsink. Likewise, in embodiments, the fourth heatsink may be comprised by the second heatsink. Especially, in embodiments, the fourth heatsink may essentially be the second heatsink. In other embodiments, third and/or fourth heatsink may be comprised by a carrier (comprising a thermally conductive material), see also further below. Especially, in such embodiments, the radio unit and the one or more antenna modules may be configured in thermal contact with, such as arranged on, the carrier. However, in other embodiments, the third heatsink and the fourth heatsink may be separate heatsinks, and may thus be different from the second heatsink and/or the carrier.

As mentioned above, the first canopy may comprise a first canopy side portion and the second canopy may comprise a second canopy side portion. In embodiments, the second canopy side portion may especially be conformal to the first canopy side portion. In other words, the second canopy side portion may be well matched. For example, in embodiments, the first canopy, especially the first canopy side portion may have a cylindrical shape and the second canopy, especially the second canopy side portion may also have a cylindrical shape, wherein a diameter of the second canopy side portion may be (substantially) equal to a diameter of the first canopy side portion. Such embodiments may be beneficial, as it may simplify the installation of the second canopy on top of the first canopy. Additionally, such embodiments may contribute to ingress protection within the luminaire arrangement.

The above described example of a cylindrical first canopy may imply a planar first canopy upper portion. However, in embodiments, the first canopy upper portion may be non-planar. For example, in embodiments, the first canopy may have one of the group comprising, a concave shape, a convex shape, and a ribbed (or wave) shape. Especially, the first canopy upper portion may have one of the group comprising, a concave shape, a convex shape, and a ribbed (or wave) shape.

In embodiments, the first enclosure and the second enclosure may be configured adjoined. In other embodiments, the first enclosure and the second enclosure may be configured such a that a slit between the first canopy and the second canopy is arranged. More especially, the slit may have a height (H). In embodiments, the height (H) may be selected from the range of 1-30 mm, such as from the range of 2-15 mm, especially from the range of 5-20 mm, like from the range of 5-10. In such embodiments, the slit may allow both the passage of air and the protection against ingress of e.g. rain and hail. In embodiments, the slit may be fully around the perimeter of the luminaire arrangement. However, in other embodiments, one or more slits may be arranged between the first canopy and the second canopy, such that an alternation of one or more slits and the second canopy side portion may be arranged, i.e., the slit may be interrupted. For example, in embodiments, the second canopy side portion may have a sawtooth pattern around the perimeter of the second canopy. Hence, in specific embodiments, the first enclosure and the second enclosure may be configured such that a slit between the first canopy and the second canopy is arranged; wherein the slit may have a height H, wherein H may be selected from the range of 1-30 mm.

Especially, one or more of the one or more first openings comprised by the enclosure may especially be comprised by the second canopy. In other words, the second canopy may comprise one or more perforations, thereby providing the one or more first openings. Alternatively or additionally, one or more of the one or more openings may be provided by one or more slits between the first canopy and the second canopy. Especially, the second canopy may comprise one or more first openings, and optionally, there may be one or more slits between the first canopy and the second canopy.

Embodiments as described above may be beneficial as the slit may even further improve thermal management in the luminaire arrangement. The slit may provide additional suitable passage for the (cooling) fluid, e.g. cool external air may efficiently enter the second enclosure, i.e., between the first canopy and the second canopy, through the slit, heat generating components in the luminaire arrangement (e.g. the light generating device, the radio unit and the antenna modules) may subsequently heat the said air. The heated air may then rise up and exit the luminaire arrangement through the one or more first openings in the second canopy (upper portion).

In embodiments, the second canopy may comprise a second canopy lower rim. Especially, the second canopy lower rim may be the rim of the second canopy side portion that may be configured facing the first canopy. A plane (P) may be defined perpendicular to the (optical) axis (Ao) and intersecting the second canopy lower rim. The slit may be defined as the shortest distance between the first canopy upper portion and the second canopy lower rim. Hence, in embodiments, the slit may comprise a space (or volume) between the first canopy upper portion and the plane (P) defined by the perimeter of the second canopy. Especially, the slit may, in embodiments, comprise a volume defined by the first canopy upper portion, the plane (P), the first cross-sectional dimension and the second cross- sectional dimension. For example, in embodiments, the slit may comprise a volume in the shape of a disc or a plate.

Hence, in embodiments, the boundaries of the second enclosure may at least partially be formed by the second canopy upper portion, including one or more first openings, and the second canopy side portion (optionally including one or more first openings), including one or more antenna module openings and one or more cavities. Another part of the boundaries of the second enclosure may, for example, be formed by the slit(s).

Further, in embodiments, the second canopy may for example be mechanically attached to the first canopy through one or more screws. The one or more screws may, in embodiments, be fully tightened, causing the second canopy to be fully adjoined to the first canopy, i.e., no slit is arranged. However, in other embodiments, the one or more screws may be configured not fully tightened, such that a slit may be arranged between the first canopy and the second canopy, and hence between the first enclosure and the second enclosure. Such attachment of the second canopy to the first canopy may, in embodiments, occur late-stage. In other words, the first enclosure (or “original enclosure”) may be the first enclosure of an earlier produced luminaire, e.g. for street lighting, but not yet installed, or may be the first enclosure of an already installed luminaire, e.g. for street lighting. Hence, in such embodiments, the second enclosure may be arranged on, such as attached to, the first enclosure (such as via the carrier) in a late-stage. The second enclosure may further comprise additional components that may similarly be attached to the first enclosure, in a late-stage, such as especially at least the radio system and the antenna system. Optionally, in embodiments, the radio system and the antenna system may be configured on the first enclosure via a carrier, see also further below.

Furthermore, in embodiments, the slit may be adjustable in height. Especially, the aforementioned one or more screws may be tightened or loosened in order to adjust the height (H) of the slit. The invention may not be limited to the above mentioned example of mechanically attaching the second canopy to the first canopy with screws. As may be clear to the skilled person, the first canopy and the second canopy may be physically attached in a number of different ways, such as also mentioned further above. Likewise, there may also be a number of different ways in which the slit may be configured adjustable in height. For example, in embodiments, the slit may be configured adjustable in height through the use of springs or cranks.

In embodiments, the second canopy may be configured rotatable. Especially, in embodiments, the antenna system may be configured rotatable. Such a rotatable antenna system may provide the benefit of tuning the direction of the antenna modules, and, hence tuning the wireless connectivity. Rotation of the second canopy, and especially the antenna system, may be achieved by providing a means for rotation, such as a motor.

In specific embodiments, the luminaire arrangement may comprise a central rod. The central rod may especially be at least partially configured in the second enclosure. Especially, the second canopy may be functionally coupled to, such as physically attached to, the central rod. When the second canopy is functionally coupled to the central rod, the second canopy may be configured rotatable with respect to the central rod, for example manually, or by means of a motor. In further embodiments, the antenna system may be functionally coupled to, such as physically attached to, the central rod. In such embodiments, the antenna system may (also) be configured rotatable with respect to the central rod. It may be convenient, in such embodiments, that the second canopy may have a circular cross-section. However, this is not a necessity. The central rod may be attached to the second enclosure.

The luminaire arrangement may, in embodiments, (also) comprise a carrier. Especially, the carrier may be functionally coupled, such as physically (or mechanically) coupled, to the first canopy, especially to the first canopy upper portion. Further, the carrier may, in embodiments, be configured to carry one or more of the antenna system and the radio system, such as both the antenna system and the radio system. In embodiments, the second canopy may be functionally coupled, such as physically (or mechanically) coupled, to the first canopy through the carrier. Hence, in specific embodiments, the luminaire arrangement may comprise a carrier, wherein the carrier may be functionally coupled to the first canopy, wherein the carrier may be configured to carry one or more of the antenna system and the radio system; and wherein the second canopy may be functionally coupled to the first canopy through the carrier.

In embodiments, the carrier may be a (substantially) planar element. For example, the carrier may be a planar sheet or plate. The carrier may, in embodiments, comprise a material selected from the group comprising (bio)plastic, glass, ceramics, metal. Further, in embodiments, the carrier may comprise a first heatsink element. In specific embodiments, the carrier may essentially be the first heatsink element. Especially, in embodiments, the carrier may (even) be the second heatsink, i.e., the carrier, the first heatsink element, and the second heatsink may be the same component. Hence, in embodiments, the carrier may be thermally conductive. Especially, the carrier may comprise a metal, such as aluminum. Hence, the carrier may, in embodiments, be a planar sheet or plate at least partially made of a metal. In other embodiments, the carrier and the first heatsink element may be separate components that may be functionally coupled. Especially, the carrier and the first heatsink element may be configured in thermal contact. More especially, the carrier and the first heatsink element, may be configured in thermal contact with the first heatsink (of the first canopy), and/or with the second heatsink (of the second canopy). This provides an additional route or path for heat to be dissipated from the first heatsink. This approach provides a mechanism for transferring heat from the first heatsink to the second heatsink via the carrier. This is advantageous in effectively increasing the surface area of the first heatsink, to improve the dissipation of heat from the luminaire arrangement. The heat generated by the light source will typically be greater than the heat generated by the radio unit (due to natural differences in efficiency). Accordingly, this approach provides a route for dissipating heat from the first heatsink to the second heatsink for distributing heat more evenly throughout the luminaire arrangement and improving the thermal management of the luminaire arrangement.

The carrier may further, in embodiments, comprise a main carrier part and one or more carrier subparts. Especially, the main carrier part may be planar. The one or more carrier subparts may especially be configured under an angle (P) relative to the (planar) main carrier part. Especially, in embodiments, the angle ( ) may be selected from the range of 45- 135°, such as from the range of 60-120°, like from the range of 80-100°. More especially, the one or more carrier subparts may, in embodiments, be configured under an angle (P) of 90° relative to the (planar) main carrier part.

Hence, in embodiments, the carrier may comprise a planar main carrier part with one or more upstanding carrier subparts. Especially, the one or more carrier subparts may be configured to carry the one or more antenna modules of the antenna system. More especially, the one or more antenna modules may be functionally, especially physically, coupled to the one or more carrier subparts. Therefore, in embodiments, the carrier may comprise a carrier subpart for each antenna module. However, in other embodiments, the carrier may comprise less carrier subparts than antenna modules, such that either (i) not all antenna modules are functionally coupled to a carrier subpart, or (ii) one or more antenna modules are functionally coupled to the same carrier subpart.

In embodiments, the one or more carrier subparts may be integrally formed with the main carrier part. Hence, a monolithic body may comprises the carrier subparts and the main carrier part. Especially, the main carrier part and the one or more carrier subparts may be formed from the same continuous sheet, wherein one or more bent portions of the continuous sheet may define the one or more carrier subparts, and a non-bent portion of the continuous sheet may define the main carrier part. Especially, in embodiments, the one or more antenna modules may be arranged on the one or more bent portions, whereas the radio system, especially the radio unit, may be arranged on the non-bent portion. This provides a mechanism for defining or (re)setting the location of the antenna modules using the carrier, for example in embodiments where the antenna system is desired to be configured rotatable. Further, this may increase an ease of manufacturing of the luminaire arrangement, as setting the position of the carrier subparts is performed with relative ease by performing a single positioning step with the carrier (e.g., rather than individual positioning steps for each carrier subpart).

In embodiments, the central rod may be attached to the carrier.

Especially, the second canopy may be functionally coupled, such as physically (or mechanically) coupled, to the carrier.

Therefore, in specific embodiments, the second canopy and the carrier may form the second enclosure, i.e., the boundaries of the second enclosure may be formed by the second canopy upper portion, the second canopy side portion and the carrier. Hence, in other words, the boundaries of the second enclosure may at least partially be formed by the second canopy upper portion and the second canopy side portion, whereas the other part of the boundaries of the second enclosure may be formed by (for example) the carrier.

The luminaire arrangement may, in embodiments, (also) comprise a carrier support. Especially, the carrier support may be functionally coupled, such as physically (or mechanically) coupled, to the first canopy, especially to the first canopy upper portion. Further, the carrier support may, in embodiments, be configured to carry the carrier. In embodiments, the carrier support may especially be arranged between the first canopy (upper portion) and the carrier. Hence, in embodiments, the second canopy may be functionally coupled, such as physically (or mechanically) coupled, to the first canopy through the carrier and the carrier support. In specific embodiments, the luminaire arrangement may comprise a carrier support, wherein the carrier support may be functionally coupled to the first canopy, wherein the carrier support may be configured to support the carrier.

In embodiments, the carrier support may comprise a material selected from the group comprising (bio)plastic, glass, ceramics, metal. Further, in embodiments, the carrier support may comprise a second heatsink element. In specific embodiments, the carrier support may essentially be the second heatsink element. Hence, in embodiments, the carrier support may be thermally conductive. Especially, the carrier support may comprise a metal, such as aluminum. In other embodiments, the carrier support and the second heatsink element may be separate components that may be functionally coupled. Especially, the carrier support and the second heatsink element may be configured in thermal contact. More especially, the carrier support and the second heatsink element, may be configured in thermal contact with the first heatsink (of the first canopy), the carrier, and/or with the second heatsink (of the second canopy). This provides an additional route or path for heat to be dissipated from the first heatsink. This approach provides a mechanism for transferring heat from the first heatsink to the second heatsink via the carrier support and the carrier. This is advantageous in effectively increasing the surface area of the first heatsink, to improve the dissipation of heat from the luminaire arrangement. The heat generated by the light source will typically be greater than the heat generated by the radio unit (due to natural differences in efficiency). Accordingly, this approach provides a route for dissipating heat from the first heatsink to the second heatsink for distributing heat more evenly throughout the luminaire arrangement and improving the thermal management of the luminaire arrangement.

In embodiments, the carrier support may elevate the carrier from the first canopy to provide the slit as described above. Hence, the carrier support may create the slit (or an air gap) directly above the first canopy. In such a way, a luminaire arrangement comprising a carrier support may be additionally beneficial to the thermal management, as the carrier support may provide the slit, by which way the (cooling) fluid (such as air) may pass through the luminaire arrangement, as described in more detail above. For example, a shortest distance between the first canopy and the radio unit may be at least 0.5 cm, such as at least about 1 cm, like in embodiments 1.5 cm or more.

In embodiments, the carrier support may elevate the carrier from the first canopy to provide an (air) gap between the first canopy upper portion and the carrier. In embodiments, the luminaire arrangement may comprise a carrier support, wherein the carrier support is functionally coupled to the first canopy, wherein the carrier support is configured to support the carrier; wherein the carrier support provides a bridge and creates an (air) gap between the first canopy upper portion and the carrier. In such a way, a luminaire arrangement comprising a carrier support may be additionally beneficial to the thermal management, as the carrier support may provide the (air) gap, by which way the (cooling) fluid (such as air) may pass through the luminaire arrangement, as described in more detail above. For example, a shortest distance between the first canopy and the radio unit may be at least 0.5 cm, such as at least about 1 cm, like in embodiments 1.5 cm or more.

The carrier support may not only be advantageous for thermal management purposes. In embodiments, the carrier support may also provide a bridge between the first canopy upper portion and the carrier. In specific embodiments, the carrier may be planar and the first canopy upper portion may be non-planar, i.e., the carrier and the first canopy upper portion may not be conformal. In such embodiments, the carrier support may provide a bridge between the carrier and the first canopy upper portion, thus resolving the discrepancy. Hence, in embodiments, the carrier support may provide a bridge between the first canopy upper portion and the carrier.

In embodiments, the carrier support may be a substantially planar sheet comprising one or more legs configured on one side of the planar sheet. The planar sheet may, in embodiments, especially be functionally coupled, such as physically (or mechanically) coupled, to the planar carrier, whereas the one or more legs may extend towards and be functionally coupled to the first canopy (upper portion). However, in other embodiments, the one or more legs may also extend towards and be functionally coupled, such as physically (or mechanically) coupled, to the first canopy side portion. Note, however, that in embodiments comprising the carrier support, the first canopy upper portion is not necessarily non-planar, i.e., the carrier support may also functionally couple, such as physically (or mechanically) couple, the planar carrier to a planar first canopy upper portion.

In yet other embodiments, the carrier support may have a different structure. For example, the carrier support may comprise a (small) plate, rod, or pin, functionally coupled to the first canopy upper portion. Here, functionally coupled to may, for example, refer to the carrier support being bolted to, screwed onto, glued onto, or welded onto the first canopy upper portion.

Further, in embodiments, the luminaire arrangement may comprise an optical sensor. The optical sensor may especially be configured to detect illuminance of daylight. In embodiments, the optical sensor may be functionally coupled, especially communicatively coupled, with at least the light generating device. Hence, if the illuminance of daylight falls below a predetermined threshold, the sensor may provide a signal to the light geniting device (and/or the first driver), such that the light generating device may be turned on. Likewise, if the illuminance of daylight rises above another predetermined threshold, the sensor may provide a signal to the light geniting device or the light generating device, such that the light generating device may be turned off.

The optical sensor may be configured at least partially within the second enclosure. As the optical sensor is configured to detect illuminance of daylight, the optical sensor may be desired to be uncovered. Hence, in embodiments, the optical sensor may be configured at least partially protruding the second canopy, especially the second canopy upper portion. In other embodiments, the optical sensor may be configured slightly beneath the second canopy upper portion, with a third opening (or “optical sensor opening”), configured directly above (or align with) the optical sensor. Hence, in embodiments, the second canopy upper portion may comprise a third opening (or “optical sensor opening”). Especially, in such embodiments, the optical sensor may be arranged in the second enclosure and align with the third opening. Hence, in specific embodiments, the luminaire arrangement may comprise an optical sensor, wherein one of the following may apply: (i) the optical sensor may be configured at least partly protruding the second canopy upper portion, or (ii) the second canopy upper portion may comprise a third opening, wherein the optical sensor may be arranged in the second enclosure and align with the third opening.

In embodiments, the third opening may form a transition fit to the optical sensor. This provides essentially no clearance between the sensor and the third opening. Would there, however, be clearance between the sensor and the third opening, such clearance may also be considered a first opening.

In such embodiments, the optical sensor may be arranged within the luminaire arrangement, but openly accessible to the illuminance of daylight. In yet other embodiments, the optical sensor may be configured protruding the second canopy side portion. Especially, the optical sensor may, in a luminaire arrangement employed outdoors, be configured facing the sky.

In other embodiments, the optical sensor may (also) be configured to detect the presence of individuals or vehicles. For example, in such embodiments, the optical sensor may be an infrared sensor. Especially, in such embodiments, the optical sensor may be configured in the second canopy side portion. Especially, the optical sensor may be configured facing the ground.

The present disclosure (also) provides a luminaire with an “add-on” or additional element, compared to conventional luminaires, for wireless communications. Conventional luminaires may comprise the first enclosure as described herein. The additional element is formed from a second canopy that covers the upper portion of a conventional luminaire, i.e., the first enclosure (which holds the light source). The second canopy may comprise the second canopy upper portion and second canopy side portion, such that these together with the upper portion of the conventional luminaire form or define the boundaries of the second enclosure. The second enclosure may further enclose additional components for the add-on element, especially at least a radio system and an antenna system.

The luminaire arrangement may be part of or may be applied in e.g. garden lighting systems, theater lighting systems, field lighting systems, (outdoor) road lighting systems, urban lighting systems, green house lighting systems, or horticulture lighting, especially street lighting, highway lighting, square lighting, intersection lighting, parking lot lighting, outdoor industrial and logistics area lighting, non-motorized vehicles and sidewalk lighting, and optical communication systems.

Hence, in an aspect the invention also provides a streetlight. Especially, the invention may provide a streetlight comprising: a pole (or mast); and the luminaire arrangement as described herein. In embodiments, the luminaire arrangement may be functionally coupled to the pole (or mast). Especially, the luminaire arrangement may be mechanically mounted to the pole (or mast). Furthermore, in embodiments, the luminaire arrangement may be functionally coupled, such as electrically connected, to a power source. For example, the luminaire arrangement may be electrically coupled to an urban power grid.

Typically the luminaire arrangement is a(n outdoor) streetlight luminaire. A dominant architecture of the streetlight may be a pole with a ‘lantern’ based design. Another dominant architecture of the streetlight may be a pole with a ‘cobra-head’ based design. Yet another architecture of the streetlight may be a disc shaped design. Hence, in specific embodiments, the invention may provide a streetlight comprising the luminaire arrangement as described herein and a pole, wherein the luminaire arrangement may be functionally coupled to the pole and a power source.

In a yet further aspect, the invention provides a streetlight system. Especially, the invention may provide a streetlight system comprising a plurality of streetlights as described above and a control system. More especially, the control system may be configured to control the plurality of streetlights. For example, in embodiments, the control system may control the light generating devices of the plurality of streetlights, i.e., turn the light generating devices on or off. The control system may also, in embodiments, control the antenna system and/or the radio system, i.e., the control system may control the transmission and/or reception of wireless signals among the streetlights and other devices (such as mobile phones or transmission towers).

In a yet further aspect, the invention may also provide a method for conveying a radio signal. Especially, the method may comprise using a plurality of streetlights as described herein. More especially, the method may comprise conveying a radio signal along a plurality of streetlights, wherein the radio signal is sequentially transmitted from one streetlight to another streetlight. Hence, in embodiments, the method may comprise employing a streetlight system as described above for conveying a radio signal from one location (especially streetlight) to another location (especially streetlight).

In yet a further aspect, the invention provides a second enclosure arrangement comprising the second enclosure, the antenna system, the radio system, and a carrier. The antenna system and the radio system may especially at least partly be configured between the carrier and the second enclosure. Such second enclosure arrangement may be functionally coupled to the first canopy of a first enclosure comprising a light generating device, either directly, or via a carrier support.

Hence, in yet a further aspect the invention also provides a kit of parts comprising the enclosure arrangement and the carrier support.

In yet a further aspect, the invention provides a method for (late-stage) arranging a second enclosure arrangement comprising the second enclosure, the antenna system, the radio system, and a carrier, to a first enclosure. The first enclosure may be the first enclosure of an earlier produced luminaire, e.g. for street lighting, but not yet installed, or may be the first enclosure of an already installed luminaire, e.g. for street lighting. The arranging may include attaching the second enclosure to the first enclosure, such as via the carrier. Hence, the method may comprise attaching the carrier, optionally via a carrier support, to the first enclosure.

Herein, the phrase “protection against ingress of dust, water, and moisture”, and similar phrases, may especially refer to an IP65 rating, though lower ratings are herein not excluded, like IP54 or IP55, or IP64. Especially, however, the protection is an IP65 protection. Especially, IP ratings may be defined by the international standard EN 60529 (British Standard BS EN 60529:1992). As known, the IP protection codes may refer to:

The skilled person will appreciate that the terms “upper” and “lower” are relative and are used to distinguish elements from one another. In particular, these terms are used to convey the expected position of such elements (compared to other elements) when the luminaire arrangement may be installed to a streetlight in an expected orientation (e.g., so that light is emitted towards a ground surface). The terms “upper” or “lower” could be replaced with ordinal numbers (e.g., “first”, “second” etc.).

The term “light source” may in principle relate to any light source known in the art. It may be a conventional (tungsten) light bulb, a low pressure mercury lamp, a high pressure mercury lamp, a fluorescent lamp, an LED (light emissive diode). In a specific embodiment, the light source comprises a solid state LED light source (such as an LED or laser diode (or “diode laser”)). The term “light source” may also relate to a plurality of light sources, such as 2-2000 (solid state) LED light sources. Hence, the term LED may also refer to a plurality of LEDs. Further, the term “light source” may in embodiments also refer to a so-called chips-on-board (COB) light source. The term “COB” especially refers to LED chips in the form of a semiconductor chip that is neither encased nor connected but directly mounted onto a substrate, such as a PCB. Hence, a plurality of light emitting semiconductor light source may be configured on the same substrate. In embodiments, a COB is a multi LED chip configured together as a single lighting module.

The light source may have a light escape surface. Referring to conventional light sources such as light bulbs or fluorescent lamps, it may be an outer surface of a glass or a quartz envelope. For LED’s it may for instance be the LED die, or when a resin is applied to the LED die, the outer surface of the resin. In principle, it may also be the terminal end of a fiber. The term escape surface especially relates to that part of the light source, where the light actually leaves or escapes from the light source. The light source is configured to provide a beam of light. This beam of light (thus) escapes from the light exit surface of the light source.

Likewise, a light generating device may comprise a light escape surface, such as an end window.

The term “light source” may refer to a semiconductor light-emitting device, such as a light emitting diode (LEDs), a resonant cavity light emitting diode (RCLED), a vertical cavity laser diode (VCSELs), an edge emitting laser, etc... The term “light source” may also refer to an organic light-emitting diode (OLED), such as a passive-matrix (PMOLED) or an active-matrix (AMOLED). In a specific embodiment, the light source comprises a solid-state light source (such as an LED or laser diode). In an embodiment, the light source comprises an LED (light emitting diode). The terms “light source” or “solid state light source” may also refer to a superluminescent diode (SLED).

The term “light source” may also relate to a plurality of (essentially identical (or different)) light sources, such as 2-2000 solid state light sources. In embodiments, the light source may comprise one or more micro-optical elements (array of micro lenses) downstream of a single solid-state light source, such as an LED, or downstream of a plurality of solid-state light sources (i.e. e.g. shared by multiple LEDs). In embodiments, the light source may comprise an LED with on-chip optics. In embodiments, the light source comprises pixelated single LEDs (with or without optics) (offering in embodiments on-chip beam steering).

The light source may especially be configured to generate light source light having an optical axis (O), (a beam shape,) and a spectral power distribution. The light source light may in embodiments comprise one or more bands, having band widths as known for lasers. The term “light source” may (thus) refer to a light generating element as such, like e.g. a solid state light source, or e.g. to a package of the light generating element, such as a solid state light source, and one or more of a luminescent material comprising element and (other) optics, like a lens, a collimator. A light converter element (“converter element” or “converter”) may comprise a luminescent material comprising element. For instance, a solid state light source as such, like a blue LED, is a light source. A combination of a solid state light source (as light generating element) and a light converter element, such as a blue LED and a light converter element, optically coupled to the solid state light source, may also be a light source (but may also be indicated as light generating device). Hence, a white LED is a light source (but may e.g. also be indicated as (white) light generating device).

The term “light source” herein may also refer to a light source comprising a solid state light source, such as an LED or a laser diode or a superluminescent diode.

The term “light source” may (thus) in embodiments also refer to a light source that is (also) based on conversion of light, such as a light source in combination with a luminescent converter material. Hence, the term “light source” may also refer to a combination of an LED with a luminescent material configured to convert at least part of the LED radiation, or to a combination of a (diode) laser with a luminescent material configured to convert at least part of the (diode) laser radiation.

In embodiments, the term “light source” may also refer to a combination of a light source, like an LED, and an optical filter, which may change the spectral power distribution of the light generated by the light source. Especially, the term “light generating device” may be used to address a light source and further (optical components), like an optical filter and/or a beam shaping element, etc.

The phrases “different light sources” or “a plurality of different light sources”, and similar phrases, may in embodiments refer to a plurality of solid-state light sources selected from at least two different bins. Likewise, the phrases “identical light sources” or “a plurality of same light sources”, and similar phrases, may in embodiments refer to a plurality of solid-state light sources selected from the same bin.

The term “solid state light source”, or “solid state material light source”, and similar terms, may especially refer to semiconductor light sources, such as a light emitting diode (LED), a diode laser, or a superluminescent diode.

The term “white light”, and similar terms, herein, are known to the person skilled in the art. It may especially relate to light having a correlated color temperature (CCT) between about 1800 K and 20000 K, such as between 2000 and 20000 K, especially 2700- 20000 K, for general lighting especially in the range of about 2000-7000 K, such as in the range of 2700 K and 6500 K. In embodiments, e.g. for backlighting purposes, or for other purposes, the correlated color temperature (CCT) may especially be in the range of about 7000 K and 20000 K. Yet further, in embodiments the correlated color temperature (CCT) is especially within about 15 SDCM (standard deviation of color matching) from the BBL (black body locus), especially within about 10 SDCM from the BBL, even more especially within about 5 SDCM from the BBL.

In specific embodiments, the correlated color temperature (CCT) may be selected from the range of 6000-12000 K, like selected from the range of 7000-12000 K, like at least 8000 K. Yet further, in embodiments the correlated color temperature (CCT) may be selected from the range of 6000-12000 K, like selected from the range of 7000-12000 K, in combination with a CRI of at least 70.

In an embodiment, the light source may also provide light source light having a correlated color temperature (CCT) between about 5000 and 20000 K, e.g. direct phosphor converted LEDs (blue light emitting diode with thin layer of phosphor for e.g. obtaining of 10000 K). Hence, in a specific embodiment the light source is configured to provide light source light with a correlated color temperature in the range of 5000-20000 K, even more especially in the range of 6000-20000 K, such as 8000-20000 K. An advantage of the relative high color temperature may be that there may be a relatively high blue component in the light source light.

In the context of the present invention, a “thermally conductive” element means that the element is made from a material configured or designed for conducting heat, i.e. having a high thermal conductivity. Suitable materials may include any material whose thermal conductivity at 25°C is greater than 20 W/(m*K), e.g., greater than 50 W/(m*K), e.g. greater than 100 W/(m*K) Examples include metals (e.g., copper, brass, iron, aluminum etc.) or some ceramics (e.g., SisN4 or BeO).

The term “controlling” and similar terms especially refer at least to determining the behavior or supervising the running of an element. Hence, herein “controlling” and similar terms may e.g. refer to imposing behavior to the element (determining the behavior or supervising the running of an element), etc., such as e.g. measuring, displaying, actuating, opening, shifting, changing temperature, etc.. Beyond that, the term “controlling” and similar terms may additionally include monitoring. Hence, the term “controlling” and similar terms may include imposing behavior on an element and also imposing behavior on an element and monitoring the element. The controlling of the element can be done with a control system, which may also be indicated as “controller”. The control system and the element may thus at least temporarily, or permanently, functionally be coupled. The element may comprise the control system. In embodiments, the control system and element may not be physically coupled. Control can be done via wired and/or wireless control. The term “control system” may also refer to a plurality of different control systems, which especially are functionally coupled, and of which e.g. one control system may be a master control system and one or more others may be slave control systems. A control system may comprise or may be functionally coupled to a user interface.

The control system may also be configured to receive and execute instructions from a remote control. In embodiments, the control system may be controlled via an App on a device, such as a portable device, like a Smartphone or I-phone, a tablet, etc. The device is thus not necessarily coupled to the lighting system, but may be (temporarily) functionally coupled to the lighting system.

Hence, in embodiments the control system may (also) be configured to be controlled by an App on a remote device. In such embodiments the control system of the lighting system may be a slave control system or control in a slave mode. For instance, the lighting system may be identifiable with a code, especially a unique code for the respective lighting system. The control system of the streetlight system may be configured to be controlled by an external control system which has access to the streetlight system on the basis of knowledge (input by a user interface of with an optical sensor (e.g. QR code reader) of the (unique) code. The streetlight system may also comprise means for communicating with other systems or devices, such as on the basis of Bluetooth, Thread, WIFI, LiFi, ZigBee, BLE or WiMAX, or another wireless technology.

The system, or apparatus, or device may execute an action in a “mode” or “operation mode” or “mode of operation” or “operational mode”. The term “operational mode may also be indicated as “controlling mode”. Likewise, in a method an action or stage, or step may be executed in a “mode” or “operation mode” or “mode of operation” or “operational mode”. This does not exclude that the system, or apparatus, or device may also be adapted for providing another controlling mode, or a plurality of other controlling modes. Likewise, this may not exclude that before executing the mode and/or after executing the mode one or more other modes may be executed.

However, in embodiments a control system may be available, that is adapted to provide at least the controlling mode. Would other modes be available, the choice of such modes may especially be executed via a user interface, though other options, like executing a mode in dependence of a sensor signal or a (time) scheme, may also be possible. The operation mode may in embodiments also refer to a system, or apparatus, or device, which can only operate in a single operation mode (i.e. “on”, without further tunability).

Hence, in embodiments, the control system may control in dependence of one or more of an input signal of a user interface, a sensor signal (of a sensor), and a timer. The term “timer” may refer to a clock and/or a predetermined time scheme.

BRIEF DESCRIPTION OF THE DRAWINGS

Embodiments of the invention will now be described, by way of example only, with reference to the accompanying schematic drawings in which corresponding reference symbols indicate corresponding parts, and in which:

Fig. 1 schematically depicts embodiments of the luminaire arrangement 1000;

Fig. 2-5 schematically depicts some more specific embodiments of the luminaire arrangement 1000; wherein Fig 4. further schematically depicts an embodiment of an application.

The schematic drawings are not necessarily to scale.

DETAILED DESCRIPTION OF THE EMBODIMENTS

Fig. 1 schematically depicts an embodiment of a luminaire arrangement 1000 comprising a housing arrangement 500, a light generating device 100, an antenna system 600, and a radio system 700. Embodiment I in Fig. 1 schematically depicts a cross-sectional view of the luminaire arrangement, whereas embodiment II schematically depicts a top view of the luminaire arrangement.

The housing arrangement 500 may especially comprise a first enclosure 210 and a second enclosure 220. In embodiments, the second enclosure 220 may be functionally coupled to the first enclosure 210, such as physically (either directly, as depicted in Fig. 1 and Fig. 5, or indirectly, as depicted in Fig. 2-4) attached to the first enclosure 210. Further, the first enclosure 210 may comprise a light exit window 530 and a first canopy 510, i.e., the light exit window 530 and the first canopy 510 may form the first enclosure 210. In embodiments, the first canopy 510 may comprise a first canopy upper portion 511 and a first canopy side portion 512. Especially, in embodiments, the first canopy upper portion 511, the first canopy side portion 512, and the light exit window 530 may form the boundaries of the first enclosure 210. Yet further, the second enclosure 220 may comprise a second canopy 520. In embodiments, the second canopy 520 may comprise a second canopy upper portion 521 and a second canopy side portion 522.

The first canopy 510 and the second canopy 520 may especially be configured such, that the first canopy upper portion 511 and the second canopy upper portion 521 may be facing the same direction relative to an axis Ao of the luminaire arrangement 1000. Further, in embodiments, the first canopy 510 may have a first cross-sectional dimension (such as a diameter) defined perpendicular to the axis Ao. Likewise, in embodiments, the second canopy 520 may have a second cross-sectional dimension (such as a diameter) defined perpendicular to the axis Ao.

Herein, the axis Ao of the luminaire arrangement 1000 may especially be an optical axis Ao. Especially, the (optical) axis Ao may be defined as an imaginary line that defines a path through the luminaire arrangement 1000 along which device light 101 propagates out of the luminaire arrangement 1000. Especially, the (optical) axis Ao may coincide with the direction of device light 101 with the highest radiant flux.

As is depicted in Fig. 1 and Fig. 5, especially, the second canopy upper portion

521, the second canopy side portion 522, and the first canopy upper portion 511 may form the boundaries of the second enclosure 220. However, in other embodiments, such as depicted in Fig. 2-4, the boundaries of the second enclosure 220 may be formed by the second canopy upper portion 521, including one or more first openings 525, the second canopy side portion 522, including one or more second openings or “antenna module openings” 625 (and one or more cavities 529), a slit 850, i.e., a volume defined by the first canopy upper portion 511, the plane P, and the perimeter of the second canopy 520. In yet other embodiments, the boundaries of the second enclosure 220 may be formed by the second canopy upper portion 521, including one or more first openings 525, the second canopy side portion 522 and a carrier 870, see also further below.

The light generating device 100 may, in embodiments, comprise a solid state light source 10. The solid state light source 10 may be configured to generate light source light 11. Further, in embodiments, the light generating device 100 may be configured to generate device light 101. Especially, the light source light 11 may be comprised by the device light 101. More especially, in embodiments, the light exit window 530 may be transmissive for at least part of the device light 101. In embodiments, the light generating device 100 may be enclosed by the first enclosure 210. Especially, the first enclosure 210 may be configured to protect the light generating device 100 against ingress of dust, water, and moisture. In embodiments, the antenna system 600 may be at least partially positioned in the second enclosure 220 . Especially, the antenna system 600 may be at least partially positioned between the first canopy 510 and the second canopy 520. The antenna system 600 may be configured to transmit and/or receive wireless signals. Therefore, in embodiments, the antenna system 600 may comprise (i) one or more antenna modules 610 for transmitting and/or receiving the wireless signals, and (ii) one or more antenna module housings 620. Especially, the one or more antenna modules 610 may be enclosed by the one or more antenna module housings 620. More especially, in embodiments, the antenna module housings 620 may be configured to the one or more antenna modules 610 against ingress of dust, water, and moisture.

In specific embodiments, such as depicted here in Fig. 1 and in Fig. 3, the antenna system 600 may comprise at least four (directional) antenna modules 610.

Especially, the at least four antenna modules may be directional antenna modules with an individual range comprising an angle (a) of at least 90°, such as at least 120°. More especially, the at least four (directional) antenna modules 610 may be configured to transmit and/or receive the wireless signals in a total orientation of 180-360°, such as especially a total orientation of 360° relative to the luminaire arrangement 1000. Here the total orientation of 180-360° may especially be defined in a (substantially) horizontal plane relative to the luminaire arrangement 1000. Herein, the term “directional” may refer to being configured to perform a function in a direction with a specified orientation and range.

The radio system 700 may, in embodiments, be positioned in the second enclosure 220. Especially, the radio system 700 may be positioned between the first canopy 210 and the second canopy 220. The radio system 700 may especially comprise (i) a radio unit 710 and (ii) a radio unit housing 720. In embodiments, the radio unit 710 may be communicatively coupled to the antenna system 600. Especially, the radio unit 710 may be configured to (a) control the transmission of wireless signals transmitted by the antenna system 600 or (b) process wireless signals received by the antenna system 600. More especially, the radio unit 710 may be configured to (a) control the transmission of wireless signals transmitted by the one or more antenna modules 610 and (b) process wireless signals received by the one or more antenna modules 610. Hence, in embodiments, the radio unit 710 may be electrically connected to the antenna system 600. Furthermore, the radio unit 710 may be enclosed by the radio unit housing 720. Especially, in embodiments, the radio unit housing 720 may be configured to protect the radio unit 710 against ingress of dust, water, and moisture. In embodiments, the second canopy 520 may comprise one or more first openings 525. Especially, in embodiments such as depicted in Fig. 1-5, one or more of the one or more first openings 525 may be arranged in the second canopy upper portion 521. More especially, the one or more first openings 525 may allow transport of a fluid, such as one or more of air and rainwater, into and/or out of the second enclosure. More especially, at least part of the one or more first openings 525 may allow transport of an external fluid into the second enclosure 220. Furthermore, at least part of the one or more first openings 525 may allow transport of fluid from within the second enclosure 220 to the external surroundings.

The above mentioned first openings 525 in the second canopy upper portion 521 may, in embodiments, especially be a plurality of x first openings 525, where x>5. More especially, the plurality of first openings 525 may be arranged in a star-shape (as depicted here), a mesh-shape (not depicted here) or a partial ring-shape design (see Fig. 1, 3, 5).

Furthermore, in embodiments, the second canopy side portion 522 may be conformal to the first canopy side portion 512. Hence, in embodiments, the second canopy 520 may be conformal to the first canopy 510, as especially depicted in Fig. 1 and Fig. 5.

Fig. 2 schematically depicts an alternative embodiment of a luminaire arrangement 1000 comprising additional features, such as a carrier 870 and a carrier support 875, further described above and below. Embodiment I in Fig. 2 schematically depicts a cross-sectional view of the luminaire arrangement 1000, whereas embodiment II schematically depicts atop view of the luminaire arrangement 1000.

Here, in embodiments, the second canopy side portion 522 may especially comprise an antenna module opening 625. At least one antenna module 610 (and thus antenna module housing 620) may at least partially be configured in the antenna module opening 625. The one or more antenna module housings 620 may, in embodiments, be (individually) arranged at a distance D from each other and the radio unit 710. Especially, in embodiments, D>1 cm.

The luminaire arrangement 1000 may further comprise a first driver 811. The first driver 811 may be arranged in the first enclosure 210. The first driver 811 may especially be functionally coupled to the light generating device 100.

The luminaire arrangement 1000 may, in embodiments, also comprise ingress protected electrical connectors 830. Especially, the ingress protected electrical connectors 830 may be configured to electrically connect the antenna system 600, especially the one or more antenna modules 610 and the radio system 700, especially the radio unit 710. More especially, the ingress protected electrical connectors 830 may be configured to protect electrical connectors against ingress of dust, water, and moisture.

In further embodiments, the first canopy 510 may comprise a first heatsink 171. Especially, the solid state light source 10 may be arranged on the first heatsink 171. Likewise, the second canopy 520 may comprise a second heatsink 172. In embodiments, as depicted here, the second heatsink may essentially be comprised by the canopy 520, i.e., the second canopy 520 may comprise a thermally conductive material, such as a metal. Especially, the second heatsink 172 may be configured in thermal contact with at least part of the antenna system 600 and/or at least part of the radio system 700. More especially, the second canopy 520 may be in thermal contact with the first canopy 510. In further embodiments, the radio system 700 may comprise a separate third heatsink 173. In embodiments, as depicted here, the third heatsink 173 may essentially be comprised by the carrier 870, i.e., the carrier 870 may comprise a thermally conductive material, such as a metal. The radio unit 710 may especially be arranged on the third heatsink 173. Likewise, the antenna system 600 may comprise a separate fourth heatsink 174. In embodiments, as depicted here, the fourth heatsink 174 may essentially be comprised by the carrier 870, i.e., the carrier 870 may comprise a thermally conductive material, such as a metal. The one or more antenna modules 610 may especially be arranged on the fourth heatsink 174.

Furthermore, in embodiments, the first canopy 510 and the second canopy 520 may be thermally conductive. Especially, the second canopy 520 may be configured in thermal contact with the first canopy 510.

In embodiments, the first enclosure 210 and the second enclosure 220 may be configured such that a slit 850 between the first canopy 510 and the second canopy 520 is arranged. Furthermore, the slit 850 may have a height H. Especially, the height H may be selected from the range of 1-20 mm. In specific embodiments, the slit 850 may be adjustable in height.

To elucidate some more: the second canopy 520 may comprise a second canopy lower rim. Especially, the second canopy lower rim may be the rim of the second canopy side portion 522 that may be configured facing the first canopy 510. A plane P may be defined perpendicular to the (optical) axis Ao and intersecting the second canopy lower rim. The slit 850 may be defined as the shortest distance between the first canopy upper portion 511 and the plane P defined by the perimeter of the second canopy 520. Especially, the slit 850 may, in embodiments, comprise a volume defined by the first canopy upper portion 511, the plane P, the first cross-sectional dimension and the second cross-sectional dimension. For example, in embodiments, the slit 850 may comprise a volume in the shape of a disc or a plate.

Further, in embodiments, the luminaire arrangement 1000 may comprise a carrier 870. The carrier 870 may be functionally coupled to the first canopy 510. Especially, the carrier 870 may, in embodiments, be configured to carry one or more of the antenna system 600 and the radio system 700. The second canopy 520 may be functionally coupled to the first canopy 510 through the carrier 870. Especially, the carrier 870 may be functionally coupled to the first canopy, especially the first canopy upper portion 511, such as depicted in Fig. 1-5. Hence, in embodiments, the second canopy 520 may be functionally coupled to the first canopy 510 through the carrier 870. Hence, in embodiments, such as depicted in Fig. 2- 4, the boundaries of the second enclosure 220 may be formed by the second canopy upper portion 521, the second canopy side portion 522, and the carrier 870, in contrast to the boundaries of the embodiment as described above.

Further, in embodiments, the carrier 870 may comprise a first heatsink element 871. Additionally or alternatively, in embodiments, the carrier 870 may be thermally conductive, e.g. may be made from a metal such as aluminum. Furthermore, the carrier 870 may comprise a main carrier part 876 and one or more carrier subparts 877, see especially Fig. 4 (III). The one or more carrier subparts 877 may, in embodiments, be configured under an angle P to the main carrier part 876. The angle may especially be selected from the range of 45-135°. Further, the one or more carrier subparts 877 may, in embodiments, be configured to carry the one or more antenna modules 610.

In embodiments, the one or more carrier subparts 877 may be integrally formed with the main carrier part 876. Especially, the main carrier part 876 and the one or more carrier subparts 877 may be formed from the same continuous sheet, wherein one or more bent portions of the continuous sheet may define the one or more carrier subparts 877, and a non-bent portion of the continuous sheet may define the main carrier part 876.

Yet further, in embodiments, the luminaire arrangement 1000 may comprise a carrier support 875. The carrier support 875 may be functionally coupled to the first canopy 510. The carrier support 875 may especially be configured to support the carrier 870. Therefore, in embodiments, the carrier support 875 may be configured between the first canopy 510 and the carrier 870.

In embodiments, the carrier support 875 may comprise a second heatsink element 872. Additionally or alternatively, in embodiments the carrier support 875 may be thermally conductive, e.g. may be made from a metal such as aluminum. Fig. 3 schematically depicts an alternative embodiment of a luminaire arrangement 1000 comprising additional features, such as a central rod 860 and an optical sensor 890. Embodiment I in Fig. 3 schematically depicts a cross-sectional view of the luminaire arrangement 1000, whereas embodiment II schematically depicts a top view of the luminaire arrangement 1000.

In embodiments, the second canopy side portion 522 may comprise a cavity 529. The cavity 529 may especially comprise the antenna module opening 625. As depicted in Fig. 3, in embodiments, the at least one antenna module 610 may at least partially be configured in the cavity 529. Further, in embodiments, the cavity 529 may protrude into the second enclosure 220. Furthermore, in embodiments, the luminaire arrangement 1000 may comprise a plurality of antenna modules 610 and a plurality of cavities 529. Especially, each of the antenna modules 610 may, in such embodiments, be at least partly configured in a respective cavity 529.

The first canopy 510 and the second canopy 520 may, in embodiments, have the same shape (see Fig. 1,2,5). However, in other embodiments, the first canopy upper portion 511 may be non-planar, such as depicted in Fig. 3. Hence, in embodiments, the first canopy 510 and the second canopy 520 may have a different shape. Especially, as depicted in Fig. 3, the second canopy 520 may have a disc shape. Further, as depicted in Fig. 4, the (first canopy 510 and) the second canopy 520 may have a ‘cobra-head’ shape.

In embodiments, the luminaire arrangement 1000 may also comprise a power splitter 840. The power splitter 840 may be configured to direct part of power provided to the luminaire arrangement 1000 to the light generating device 100 and to direct another part to the radio system 700. Hence, in embodiments, the power splitter 840 may be arranged in the first enclosure 210, such as depicted here. However, in other embodiments, the power splitter 840 may be arranged in the first enclosure 210 and/or the second enclosure 220.

Further, in embodiments, the luminaire arrangement 1000 may comprise a second driver 812. The second driver 812 may especially be arranged in the first enclosure 210 and/or the second enclosure 220, such as especially in the second enclosure 220 as depicted here. Further, the second driver 812 may be functionally coupled to the radio system 700.

In embodiments, the second canopy 520, especially the antenna system 600 may be configured rotatable. The luminaire arrangement 1000 may further comprise a central rod 860. The central rod 860 may, in embodiments, be at least partially configured in the second enclosure 220. In embodiments, the second canopy 520, especially the antenna system 600 may be configured rotatable with respect to the central rod 860. Therefore, it may be convenient that the second canopy 520 may have a circular cross-section, such as is the case in Fig. 3.

Further, in embodiments such as in Fig. 3 where (i) the carrier 870 is planar, (ii) the first canopy upper portion 511 is non-planar, the carrier support 875 may provide a bridge 880 between the non-planar first canopy upper portion 511 and the planar carrier 870.

Fig. 4 schematically depicts an embodiment of a streetlight 1200, comprising a luminaire arrangement 1000. Embodiment I in Fig. 4 schematically depicts a cross-sectional view of the streetlight 1200 comprising the luminaire arrangement 1000, whereas embodiment II schematically depicts atop view of the streetlight 1200 comprising the luminaire arrangement 1000. Embodiment III in Fig. 4 provides a separate schematic depiction of the carrier 870 from the luminaire arrangement 1000.

In embodiments, the streetlight 1000 may comprise the luminaire arrangement 1000 and a pole 400. The luminaire arrangement 1000 may especially be functionally coupled to the pole 400. Further, in embodiments, the streetlight 1200, especially the luminaire arrangement 1000, may be functionally coupled to a power source, such as an urban power grid. Note how in Fig. 4 the streetlight 1200 may especially resemble the shape of a cobra-head, as is a conventional architecture for streetlights.

The invention may also provide a streetlight system, not depicted here. Especially, the invention may provide a streetlight system comprising a plurality of streetlights 1200, 1201, 1202, etc.

Fig. 5 schematically depicts yet another alternative embodiment of a luminaire arrangement 1000. Embodiment I in Fig. 5 schematically depicts a cross-sectional view of the luminaire arrangement 1000, whereas embodiment II schematically depicts atop view of the luminaire arrangement 1000.

In embodiments, the luminaire arrangement may comprise an optical sensor 890. The optical sensor 890 may, in embodiments, be configured at least partially protruding the second canopy 520, especially the second canopy upper portion 521. In other embodiments, the optical sensor 890 may be configured slightly beneath the second canopy upper portion 521, with a third opening 526 (or “optical sensor opening” 526), configured directly above (or align with) the optical sensor 890. Hence, in embodiments such as depicted here, the second canopy upper portion 521 may comprise a third opening 526 (or “optical sensor opening” 526) . Especially, in such embodiments, the optical sensor 890 may be arranged in the second enclosure 220 and align with the third opening 526. The term “plurality” refers to two or more.

The terms “substantially” or “essentially” herein, and similar terms, will be understood by the person skilled in the art. The terms “substantially” or “essentially” may also include embodiments with “entirely”, “completely”, “all”, etc. Hence, in embodiments the adjective substantially or essentially may also be removed. Where applicable, the term “substantially” or the term “essentially” may also relate to 90% or higher, such as 95% or higher, especially 99% or higher, even more especially 99.5% or higher, including 100%.

The term “comprise” also includes embodiments wherein the term “comprises” means “consists of’.

The term “and/or” especially relates to one or more of the items mentioned before and after “and/or”. For instance, a phrase “item 1 and/or item 2” and similar phrases may relate to one or more of item 1 and item 2. The term "comprising" may in an embodiment refer to "consisting of but may in another embodiment also refer to "containing at least the defined species and optionally one or more other species".

Furthermore, the terms first, second, third and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances and that the embodiments of the invention described herein are capable of operation in other sequences than described or illustrated herein.

The devices, apparatus, or systems may herein amongst others be described during operation. As will be clear to the person skilled in the art, the invention is not limited to methods of operation, or devices, apparatus, or systems in operation.

It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims.

In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.

Use of the verb "to comprise" and its conjugations does not exclude the presence of elements or steps other than those stated in a claim. Unless the context clearly requires otherwise, throughout the description and the claims, the words “comprise”, “comprising”, and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is to say, in the sense of “including, but not limited to”. The article "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.

The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In a device claim, or an apparatus claim, or a system claim, enumerating several means, several of these means may be embodied by one and the same item of hardware. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage. In yet a further aspect, the invention (thus) provides a software product, which, when running on a computer is capable of bringing about (one or more embodiments ol) the method as described herein.

The invention also provides a control system that may control the device, apparatus, or system, or that may execute the herein described method or process. Yet further, the invention also provides a computer program product, when running on a computer which is functionally coupled to or comprised by the device, apparatus, or system, controls one or more controllable elements of such device, apparatus, or system.

The invention further applies to a device, apparatus, or system comprising one or more of the characterizing features described in the description and/or shown in the attached drawings. The invention further pertains to a method or process comprising one or more of the characterizing features described in the description and/or shown in the attached drawings.

The various aspects discussed in this patent can be combined in order to provide additional advantages. Further, the person skilled in the art will understand that embodiments can be combined, and that also more than two embodiments can be combined. Furthermore, some of the features can form the basis for one or more divisional applications.