Title:
照明装置
Document Type and Number:
Japanese Patent JP7453010
Kind Code:
B2
Abstract:
To provide a lighting device with multiple speakers which achieves high volume efficiency.SOLUTION: A lighting device 100 includes: a first speaker unit 101; a housing 111; an annular part 103 disposed at the sound emission side of the first speaker unit 101 and forming a sound passage 110 which guides sounds emitted by the first speaker unit 101 to the outside of the housing 111; a sound passage formation body 121 which is disposed at the inner side of the annular part 103 and spaced apart from the annular part 103 through the cylindrical sound passage 110; a second speaker unit 102 which emits sounds in the same direction as the first speaker unit 101 and is housed in the sound passage formation body 121; a resonance part 104 having openings 141 which communicate with the sound passage 110 and forming a resonance space 142; a cover member 118 covering the front side of the resonance space 142; and a light source 105 disposed in the resonance space 142.SELECTED DRAWING: Figure 3
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Inventors:
Akihisa Kawamura
Satoshi Takayama
Shuji Saeki
Satoshi Takayama
Shuji Saeki
Application Number:
JP2020022123A
Publication Date:
March 19, 2024
Filing Date:
February 13, 2020
Export Citation:
Assignee:
Panasonic Intellectual Property Corporation of America
International Classes:
F21V33/00; F21V3/00; H04R1/02; H04R1/24; H04R1/28; H04R1/30; H04R9/06
Domestic Patent References:
| JP2018512024A |
Foreign References:
| US20190113220 | ||||
| WO2019073401A1 |
Attorney, Agent or Firm:
Hiromori Arai
Eisaku Teratani
Shinichi Michisaka
Eisaku Teratani
Shinichi Michisaka