Background of the Invention Various transporting means, increase of traffic volume and expansion of public foundation (road system, railroad system, airport) have given people residing around road, airport, railroad, school, apartment pain due to noise from various vehicles. These noises as ill effects together with convenience of civilization, have become great solicitude for urban dwellers, and in particular have incurred various enmities of people.

Therefore, several countries as well as advanced countries, have drafted a noise criterion in which noise in residential district or specific district should be under a predetermined limit in planning public foundation such as road, etc. , and the Ministry of Environment in our country also has prepared the criterion.

Soundproof walls of various types have been installed, and generally have aluminum panel. This general soundproof wall has a base for propping supports which are installed on the base in regular intervals. In addition, aluminum panels having several layers are installed between the supports. Numerous holes are formed with this aluminum panel.

This general aluminum panel has defects in that it is difficult to perfectly block noises generated from road because the flatness of the general aluminum panel may give soundproof effect by reflecting noise from road but slight sound absorption effect. And noises over specific limit may lessen soundproof effect of the general aluminum panel of flat type. In addition, a simple wall type of the soundproof wall defiles the appearance

of the wall. And it is a weak point of the soundproof wall that assembling aluminum panel may take much time because of using rivet or bolt, etc. , and externally heads of the bolts may be exposed, etc.

Summary of the Invention To solve the above problems, it is an object of the present invention to provide a soundproof block of new type and a soundproof wall using the same, the soundproof block and the soundproof wall not only having soundproof effect of effectively blocking noises generated from road, but also excellent sound-absorption effect of protecting noise diffusion.

To achieve the above objects, the present invention provides a soundproof block for forming a soundproof wall by being laid, which includes a case formed with an inner space and sound-absorption member for absorbing sound installed in the inner space.

The section of the case in a longitudinal direction may have one of circular, polygonal and partial circular shapes.

The case may include first case and second case which form the inner space by being coupled each other.

The section of the first case in a longitudinal direction may have a curved surface, and the section of the second case in a longitudinal direction may have a flat surface.

The sections of the first case and the second case may have a curved surface or a bent structure in the respective longitudinal directions.

The first case and the second case may be coupled by being inserted each other.

The case may further include a coupling frame for coupling the first case and the second case.

The coupling frame may include a separating plate unit dividing the inner space. into first inner space and second inner space, a slot formed in the end portion of the separating plate unit, the slot being inserted with the first case and the second case.

At least one of the first case and the second case may have a section having a

curved surface in the longitudinal direction and the slot has a curvature equal to curvatures formed by the first case and the second case.

The separating plate unit may be formed with a hollow tube in a longitudinal direction of the case.

The case may include a block connection unit, when the block being laid for being connected with an upper or lower adjacent block.

The block connection unit may have an inserting structure between the block and the adjacent block.

Both ends of the case may be connected with a connection member for connecting the case with a guide post, thereby forming the soundproof wall.

The sound-absorption member may be installed on an inner surface of the case, and the sound-absorption member may be formed with a hollow hole in a longitudinal direction of the case.

The surface of the case may be wrinkled.

The case may be formed with a plurality of through holes.

Also, the present invention provides a soundproof wall by being laid with a block which includes a case formed with an inner space and sound-absorption member for absorbing sound installed in the inner space.

The soundproof wall may further include guide posts installed in an interval, wherein both ends of the case are connected with a connection member for connecting the case with each guide post, thereby forming the soundproof wall.

The soundproof wall may include a supporting member installed in a lower part of the lowest soundproof wall and surface-contacted with a part of the lower part of the lowest soundproof wall for supporting the lowest soundproof wall.

The supporting member is made of rubber.

Brief Description of the Drawings Figure 1 is a prospective view showing the soundproof wall in accordance with

the embodiment of the present invention.

Figure 2 is a plane view of the soundproof wall in accordance with the embodiment of the present invention.

Figure 3 is a sectional view in a direction of a-a as shown in Fig. 2.

Figures 4 and 5 are a prospective view and a disassembled prospective view showing the soundproof view of Fig. 1.

Figures 6 to 9 are sectional views showing other embodiments of the soundproof block.

Figures 10 and 11 are a prospective view and a sectional view showing the soundproof block of which case is a column having a triangular section.

Figures 12 and 13 are a prospective view and a sectional view showing the soundproof block of which case is a column having a square section.

Figures 14 and 15 are a prospective view and a sectional view showing the soundproof block of which case is a column having a hexagonal section.

Figures 16 and 17 a prospective view and a sectional view showing the soundproof block of which case is a column having a diamond-shaped section.

Figures 18 and 19 are a prospective view and a sectional view showing the soundproof wall by using the various soundproof blocks as shown in Figs. 10 to 17.

Best mode for Carrying out the Invention For example, the embodiments in accordance with the present invention may be modified to various types, and the scope of the present invention should not be understood to be limited to the embodiments explained hereinafter. The embodiments are provided in order that the present invention may be perfectly explained to a person having ordinary skill in the technical field to which the present invention pertains. Therefore, the figures of the elements, etc. , in the drawings are overdrawn for clearer explanation.

Hereinafter, the embodiments in accordance with the present invention are explained in detail, referring to Figs. 1 to 19. In addition, the components having the

same functions have the same numerals in the drawings.

Figure 1 is a prospective view showing the soundproof wall in accordance with the embodiment of the present invention, Figure 2 is a plane view of the soundproof wall in accordance with the embodiment of the present invention and Figure 3 is a sectional view in a direction of a-a as shown in Fig. 2.

Figures 4 and 5 are a prospective view and a disassembled prospective view showing the soundproof view of Fig. 1.

Referring to Figs. 1 to 5, the soundproof wall 100 in accordance with the present invention includes a plurality of guide posts 110, soundproof block 130 and supporting member 120.

The guide posts 110 are vertically installed on a concrete ground 101, as a groundwork structure in regular interval, and form a fundamental frame of the soundproof wall.

The guide posts 110 may be used of H-shaped steel (H beam) or C shape, and may have a curved shape or a bent shape (not shown).

The soundproof blocks 130 are installed by being laid in multiple layers between the guide posts 110.

The soundproof block 130 has a structural feature in that the soundproof block 130 has a pillar shape which may be a cylinder, a polygonal pillar, a pillar at least partially having a curved surface in order to broaden the surface area facing noises comparing with the general soundproof panel of panel type.

The case 132 may be formed in one body, and comprised of first case 140 and second case 142.

At least one of the first case 140 and the second case 142 may have a longitudinal section having a curved surface, a combination of curved surface and flat surface, and a bent structure. Figure 1 shows the soundproof wall having the case 132 in a cylindrical shape.

Looking into the soundproof block 130 in more detail, the soundproof block 130,

as shown in Figs. 3 to 5, is mainly divided into a case 132 having an empty space, a sound-absorption member 146 installed within an inner space formed in the case 132, and a closing cover 148, as a connection member connected with each end of case 132 and a closing cover 148, connected with the guide post 110.

- The case 132 includes a coupling frame 134 forming a frame and the first case 140 and the second case 142 respectively coupled to front and rear of the coupling frame 134.

Desirably, the first case 140 and the second case 142 may be coupled by being inserted each other.

The coupling frame 134 is formed with an insertion protrusion 136 at an upper end thereof and an insertion groove 138 at a lower end thereof. In other words, the soundproof block 130 has an insertion structure by being inserted with the adjacent soundproof block 130 when being laid.

And fixing units 139 formed with slots 139a and respectively inserted with the first case 140 and the second case 142 are formed frontward and rearward from the insertion protrusion 136 and the insertion groove 138.

When the sections of the first case 140 and the second case 142 in a longitudinal direction thereof are curved, the slots 139a are arch-shaped having the same curvature with the first case 140 and the second case 142. Since it impossible for the first case 140 and the second case 142 to be inserted into the arch-shaped coupling frame 134 in a front direction of the coupling frame 134, so the first case 140 and the second case 142 are assembled by being slidingly inserted into the coupling frame 134 in a side direction of the coupling frame 134, in other words, in a longitudinal direction of the case 132.

This prevent the first case 140 and the second case 146 from being easily separated after assembled, and enables the assembling without using any additional connecting member (rivet, bolt), thereby giving a beautiful appearance. (For example, the general soundproof panel uses rivets or bolts for assembling) And a hollow tube 135 is formed at the center of the coupling frame 134, and this

structurally reinforces the soundproof block for making the soundproof block endure load applied in a longitudinal direction.

The sound-absorption member 146 is installed the inner surface of the first case 140 and the second case 142, and is formed in a C-shaped block having the same curvature with the first case 140 and the second case 142. In particular, a hollow is formed within the sound-absorption member 146.

And a resonance space 134a is formed between this sound-absorption member 146 and the coupling frame 134. Like this, the soundproof block 130 makes noise absorption by the sound-absorption member 146 installed in the inner surface of the case 132, and at the same time, noise attenuation by the repeated resonance within the resonance space 134a therein.

In particular, the soundproof block 130 in accordance with the present invention has the resonance space 134a frontward and rearward divided by the coupling frame 134, and the divided the resonance spaces 134a give more effective soundproof effect by preventing the propagation of noise.

And the hollow tube 135 is formed between the divided resonance spaces, thereby more effectively preventing the propagation of noise.

The closing cover 148 has an insertion unit 149 inserted into the guide posts 110.

This insertion unit 149 may give load dispersion effect by being surface-contacted with those of the laid upper and lower soundproof blocks 130.

Meanwhile, a supporting member 120 is installed between the ground and the soundproof block 130 in order to prevent leakage of noise between the soundproof block 130 and the ground 101 and vibration propagation from the ground to the soundproof block 130.

The supporting member 120 includes an insertion protrusion 122 inserted into the insertion groove 138 of the soundproof block, and the curved surface 124 having the same curvature with that of the lower surface of the case 132, in order to stably support the soundproof block 130 on the ground.

The supporting member 120 is surface-contacted with a part of the lower surface of the soundproof block, supports the lowest soundproof block, and desirably, may be made of rubber.

Other embodiments of the soundproof block are shown in Figs. 6 to 9.

The soundproof blocks as shown in Figs. 6 to 9, include the case 132, the sound-absorption member 136 and the closing cover 148, respectively having the same construction and function with those of the soundproof block 130 in accordance with the first embodiment as shown in Fig. 1. The detailed description therefor is omitted in these embodiments.

The modified soundproof block 130a as shown in Fig. 6 has a semi-circular cylinder shape for making the case 132 soundproof at front surface of the soundproof block 130a.

The case 132 includes the coupling frame 134 forming frame, and first case 140 connected with the front surface of the coupling frame 134.

The coupling frame 134 is formed with an insertion protrusion 136 at an upper end thereof and an insertion groove 138 at a lower end thereof, and fixing units 139 formed with arch-shaped slots 139a inserted with the first case 140 are formed frontward from the portion formed with the insertion protrusion 136 and the insertion groove 138.

And the coupling frame 134 includes a flat panel 141 at rear surface.

Like this, the soundproof wall 100 in accordance with the present invention, may selectively use a doubled-sided soundproof block 130 having doubly soundproof respectively at the front and the rear as shown in Fig. 2, or a single-sided soundproof block 130a having soundproof at the front as shown in Fig. 6.

The soundproof block 130b as shown in Fig. 7 may have a wrinkled surface in order to enlarge surface areas of the first case 140 and the second case 142, may be formed with a plurality of semi sphere-shaped protrusions 140a, or the soundproof block 130c as shown in Fig. 8, may have the first case 140 and the second case 142 formed with a plurality of semi sphere-shaped grooves 140b on the surfaces thereof. Naturally, in

these soundproof block, surfaces of the first case 140 and the second case 142 may be alternatively formed with a plurality of semi sphere-shaped protrusions and grooves, or with through holes, and the protrusions or the grooves may be formed lengthwise in a longitudinal direction. In addition, the soundproof block 130d as shown in Fig. 9 may- include the oval-shaped first case 140'and the oval-shaped second case 142'in order to make the shape of the case oval-shaped.

The other embodiments of the soundproof block are shown in Figs. 10 to 19.

The soundproof blocks as shown in Figs. 10 to 19 include a case 232, a sound-absorption member 236, main frame 234, a hollow tube 235, fixing units 239 and closing cover 248 respectively having the same construction and function with those of soundproof block 130 in accordance with the first embodiment. The detailed description for them is omitted in this embodiment as shown in Fig. 1.

In the modified soundproof block 230a as shown in Figs. 10 and 11, the case 232 has just a pillar shape having a distinctive triangular section.

In the modified soundproof block 230b as shown in Figs. 12 and 13, the case 232 has a pillar shape having a distinctive square section.

And in the modified soundproof block 230c as shown in Figs. 14 and 15, the case has a pillar shape having a distinctive hexagonal section, and in the modified soundproof block 230d as shown in Figs. 16 and 17, the case has a pillar shape having a distinctive diamond-shaped section.

It is natural that the shape of the case may be modified without being limited to the above presented shapes of triangle, square, hexagonal and diamond-shaped. Herein, it is important that the soundproof blocks 230a-230d of these various shapes in accordance with the present invention as shown in Figs. 18 and 19, have insertion protrusions 236 and insertion grooves 238 enabling the soundproof blocks to be laid each other like Lego# blocks of various shapes. And soundproof walls of various shapes according any constructor's selection may be formed by using the soundproof blocks 230a-230d of these various shapes.

Meanwhile, the soundproof block and the soundproof wall having the above constructions in accordance with the present invention may be variously modified and have various shape. But it should be understood that the present invention may include all modifications, equivalents and alternatives within the scope of the concept of the present invention which defined by the attached claims and rather than be limited to a particular form as in the above detailed description.

As described in the above, the construction and the operation of the soundproof block and the soundproof wall using same in accordance with the present invention are explained as in the above description and the drawings, it is natural that the above described construction and operation of the soundproof block and the soundproof wall using same in accordance with the present invention be just embodiments, and may be variously transformed and modified within the concept of the present invention.

Industrial Applicability Once the present invention is applied, the assembling without any additional connection member (rivet, bolt) gives a beautiful appearance. In addition, the resonance space formed between the sound-absorption member and the coupling frame makes noise absorption by the sound-absorption member and the repeated resonance in the resonance space, thereby making attenuation of noise. In addition, by installing the supporting member, the present invention has an effect of noise attenuation due to leakage of noise between the ground (concrete ground) and the soundproof block, prevention of separation of the soundproof block, and protection and absorption of vibration propagated from the ground, thereby extending life span of the soundproof block.