Soundproof wall

Abstract

To provide a soundproof wall that makes it easy to inspect fixing members of pillars.SOLUTION: A stepped placement part is provided on a pillar that is fixed to an installation surface with a fixing member, and a soundproof panel placed on the placement part is fixed to the pillar vertically above the installation surface, with the lower end of the soundproof panel positioned higher than the fixing member so that the fixing member can be seen from either the noise source side or the side opposite the noise source. As the fixing member is positioned such that it can be seen from either the noise source side or the side opposite the noise source, the condition of each fixing member can be inspected through the gap between the lower end of the soundproof panel and the installation surface.SELECTED DRAWING: Figure 17

Description

[Technical Field]

[0001] The present invention relates to a soundproof wall that is installed mainly along roads or railroad tracks on which vehicles travel to reduce noise from the vehicles. [Background technology]

[0002] Soundproof walls, which reduce noise generated by moving vehicles by soundproofing or absorbing sound, are often constructed by attaching soundproof panels between posts to form a wall. The posts of these soundproof walls are often erected using anchor bolts or the like that are buried and fixed in the installation surface, but it is desirable to periodically check the looseness of the nuts threaded onto these anchor bolts, and an invention has been proposed to make this inspection easier.

[0003] For example, Patent Document 1 discloses a sound insulating wall (3) made of H-shaped steel (1) and sound insulating plates (2), which has a base (11) and a sound insulating frame (21), the base (11) is installed on the installation surface (4) of the sound insulating wall (3) by a fixture (5), and has a first support portion (12) and a second support portion (13) integrally formed on the upper surface, the first support portion (12) is composed of a pair of shielding plates (12a) which are parallel to each other and spaced apart by a distance (W) on the inside outside of the fixture (5) toward the sound insulating wall (3) and have a recess (14) for the web (1a) of the H-shaped steel (1), and the second support portion (13) is arranged in a direction forming an angle with the sound insulating wall (3) from both outer surfaces of the pair of shielding plates (12a) which sandwich the recess (14) at a distance that fits the width (S) of the flange (1b) of the H-shaped steel (1). The sound-insulating frame (21) is provided with a main body (24) having a top plate (22) and opposing leg pieces (23), and an insertion portion (25) protruding from an end of the main body (24). The insertion portion (25) is inserted between the pair of shielding plates (12a) of the first support portion (12) and is installed on the installation surface (4). An invention has been proposed and published for a support structure for a sound-insulating wall, characterized in that the main body (24) is formed of a pair of partitions (13a) extending from the top plate (22) to the installation surface (4), and the end of the sound-insulating plate (2) is fitted into the groove (1c) of the H-beam (1), and the bottom plate portion (2a) is in close contact with the top plate (22) of the sound-insulating frame (21). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-241749 Summary of the Invention [Problem to be solved by the invention]

[0005] The support structure of the sound insulation wall described in Patent Document 1 is configured such that a sound insulation frame 21 is placed on the installation surface (4) at a position corresponding to the groove (1c) of the H-beam (1), and a sound insulation plate (2) is placed on top of the sound insulation frame 21 in close contact with the groove (1c) and fitted into the groove (1c), so that the fixing device (5) that fixes the base (11) to the installation surface (4) is exposed and not positioned inside the sound insulation frame (21) or the sound insulation plate (2).

[0006] The present invention provides a soundproof wall with a different configuration that allows easy inspection of the fixing members of the support posts. [Means for solving the problem]

[0007] In order to achieve the above object, the present invention has the following configuration. In other words, the soundproof wall of the present invention is a soundproof wall comprising support pillars and soundproof panels, wherein the support pillars are fixed to an installation surface by fixing members and stand upright, the support pillars have stepped mounting portions, the soundproof panels placed on the mounting portions are fixed to the support pillars vertically upward from the installation surface, the lower ends of the soundproof panels are positioned above the fixing members, and the fixing members can be seen from the noise source side or the side opposite the noise source.

[0008] In the soundproof wall according to the present invention, the support columns have stepped mounting sections, and the soundproof panels placed on the mounting sections are fixed to the support columns vertically upward from the installation surface, so that the lower ends of the soundproof panels can be fixed to the support columns with a distance from the installation surface of the support columns. Furthermore, the lower ends of the soundproof panels are positioned above the fixing members that fix the support columns to the installation surface, and the fixing members are arranged so that they can be seen from the noise source side or the side opposite the noise source, so that the condition of each fixing member can be inspected through the gap between the lower ends of the soundproof panels and the installation surface.

[0009] Furthermore, if all the fixing members are arranged so as to be visible from the noise source side, then all the fixing members can be inspected from the roadway side, which is the noise source on a road, for example, and this makes the inspection work easier, which is preferable.

[0010] Furthermore, if a gap between the installation surface and the soundproof panel is blocked by a cover member disposed below the soundproof panel, noise leakage to the opposite side of the soundproof wall through the gap can be reduced, which is preferable. Furthermore, if the cover member is movably attached, it is possible to inspect the fixing member by moving the cover member, which is preferable.

[0011] Furthermore, it is preferable to attach a fall prevention wire so that it spans between the support and the soundproof panel and to position this fall prevention wire so that it passes through the placement portion, as this allows the fall prevention wire to be attached stably. [Effects of the Invention]

[0012] According to the soundproof wall of the present invention, the condition of the fixing members of the support posts can be easily inspected. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a front view showing an embodiment of a soundproof wall according to the present invention. [Figure 2] FIG. 2 is a front view showing the soundproof wall of FIG. 1 with the lid member and the cover removed. [Figure 3] FIG. 3 is a perspective view showing the support column of FIGS. [Figure 4] FIG. 4 is a perspective view in a different direction from FIG. 3. [Figure 5] FIG. 5 is a front view of the support column of FIGS. [Figure 6] FIG. 6 is a right side view of FIG. 5. [Figure 7] FIG. 6 is a plan view of FIG. 5. [Figure 8] FIG. 6 is a bottom view of FIG. 5. [Figure 9] 1 to 4, (a) is a plan view, and (b) is a front view. [Figure 10] 9(b) is an enlarged view of the upper right portion of FIG. 9(b). [Figure 11] FIG. 10 is a right side view of FIG. 9. [Figure 12] FIG. 2 is a front view showing the cover member shown in FIG. [Figure 13] FIG. 13 is a right side view of FIG. 12. [Figure 14] 14 is a right side view showing the state before the cover member of FIG. 13 is attached to the soundproof panel of FIG. 11. FIG. [Figure 15] 15 is a diagram showing the state in which the cover member of FIG. 14 is attached to the soundproof panel. FIG. [Figure 16] FIG. 9 is a right side view showing the state in which the support column of FIGS. 3 to 8 is installed on an installation surface. [Figure 17] 17 is a side view showing the state in which the soundproof panel of FIGS. 9 to 11 is fixed to the support of FIG. 16. FIG. [Figure 18] FIG. 18 is a front view of FIG. 17. [Figure 19] FIG. 19 is a diagram showing the state in which a soundproof panel and a fall prevention wire are further attached to the support pole of FIG. 18. DETAILED DESCRIPTION OF THE INVENTION

[0014] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described with reference to the accompanying drawings. In the drawing, 1 is a soundproof wall. The soundproof wall 1 is formed by erecting a plurality of support posts 3 at intervals in the longitudinal direction on an installation surface G, and fixing both end portions of a soundproof panel 2 to the support posts 3. In the following description, the left-right direction in FIG. 1 is the longitudinal direction, the up-down direction perpendicular to the longitudinal direction is the vertical direction, and the direction perpendicular to the longitudinal and vertical directions is the front-rear direction.

[0015] The soundproof panel 2 is fixed to a support 3 with its lower end spaced apart from the installation surface G. A cover member 4 is attached to the lower part of the soundproof panel 2 to close the gap between the soundproof panel 2 and the installation surface G.

[0016] A cover body 5 is attached to the front side of the support 3. The cover body 5 is attached with a male thread member B1 made of a bolt screwed into the support 3, and covers the longitudinal end of the soundproof panel 2 fixed to the support 3 so that it cannot be seen from the front side.

[0017] FIG. 2 is a front view showing the soundproof wall 1 of FIG. 1 with the lid member 4 and the cover body 5 removed. Each soundproof panel 2 has both longitudinal ends fixed to the support 3. Specifically, each soundproof panel 2 is fixed to the support 3 by inserting the male thread of a male thread member B2 made of a bolt from the front and screwing it into the support 3.

[0018] 2, a fall prevention wire 6 is attached so as to span between the support 3 and the soundproof panel 2. By attaching the fall prevention wire 6, even if the soundproof panel 2 is released from its fastening by the male screw member B2 due to factors such as a vehicle colliding with the soundproof wall 1, the soundproof panel 2 is prevented from completely detaching from the support 3 and from falling backward or downward.

[0019] 3 is a perspective view showing the support 3 of FIGS. 1 and 2, FIG. 4 is a perspective view in a different orientation from FIG. 3, FIG. 5 is a front view of the support 3 of FIGS. 3 and 4, FIG. 6 is a right side view of FIG. 5, FIG. 7 is a plan view of FIG. 5, and FIG. 8 is a bottom view of FIG. 5. The support column 3 is a columnar body extending vertically upward from a rectangular plate-shaped base 30 fixed to the installation surface G, and includes a substantially rectangular flat middle plate 31 arranged so that its plate surface follows the front-to-rear direction, and a substantially rectangular flat front plate 34 and rear plate 32 connected to both ends of the middle plate 31 in the front-to-rear direction. The front plate 34 and rear plate 32 are arranged perpendicular to the middle plate 31; in other words, the middle plate 31, front plate 34, and rear plate 32 are arranged like H-beams. The base 30 has through holes 30a formed therein for inserting anchor bolts or the like for fixing the base 30 to the installation surface G. A total of four through holes 30a are formed, and the through holes 30a are arranged in a substantially rectangular shape as shown in FIG. The entire support pillar 3 is made of steel, and its surface is zinc plated and painted.

[0020] The support pillar 3 forms side plates 33 that span between the front plate 34 and the rear plate 32. The side plates 33 are formed in the shape of rectangular flat plates, and two of them are arranged on each side of the support pillar 3 in the longitudinal direction, spaced apart in the vertical direction.

[0021] A screw hole 34a penetrating in the front-rear direction is formed in the front plate 32. The screw hole 34a has a female thread on the inside and is sized and positioned so that the male screw member B2 for fixing the soundproof panel 2 can be screwed into it.

[0022] The support pillar 3 forms a mounting portion 35 at the bottom of the front plate 34. The mounting portion 35 is a stepped portion that protrudes forward from the front surface of the front plate 34 and is formed in the shape of a rectangular flat plate. In addition, a rectangular flat plate portion that extends downward and reaches the base 30 is formed at the front end of the mounting portion 35. The mounting portion 35 is formed with two through holes 35a, each of which is substantially rectangular and penetrates the mounting portion 35 in the vertical direction, spaced apart from one another in the longitudinal direction.

[0023] The support 3 is formed with an attachment portion 36 for attaching the cover body 5. The attachment portion 36 is provided on the front plate 34, and specifically, is formed so as to protrude forward from the front plate 34. The attachment portion 36 is formed in a roughly U-shape in side view by bending a vertically long, roughly rectangular plate-like member, and one end of the attachment portion 36 is connected to the front plate 34. The attachment portion 36 also has screw holes 36a formed in it with a size and arrangement that allows the male screw member B1 for attaching the cover body to be screwed in.

[0024] The middle plate 31 of the support 3 is formed at its upper part with a locking portion 31a that can lock the fall prevention wire 6. In addition, the middle plate 31 is formed at its lower part with a through hole 31b that can insert the fall prevention wire 6. The locking portion 31a is formed in the shape of an elongated hole along the front-rear direction, and has a round hole-like portion in part that is larger than the width of the hole, so-called a potbellied hole.

[0025] The fall prevention wire 6 is made of a metal wire, and has engagement portions at both ends thereof that are larger in diameter than the wire portion. The through-hole 31b of the intermediate plate 31 is formed to have a size that allows the engagement portion of the fall prevention wire 6 to be inserted therethrough. The locking portion 31a is formed so that the large round hole portion can be inserted through the engaging portion of the fall prevention wire 6, and the long hole portion is formed so that the engaging portion cannot be inserted through. The locking portion 31a is configured so that the engaging portion of the fall prevention wire 6 is inserted through the large round hole portion and then moved to the long hole portion to lock the fall prevention wire 6.

[0026] Figure 9 shows the soundproof panel 2 of Figures 1 to 4, (a) is a plan view, (b) is a front view, Figure 10 is an enlarged view of the upper right area of Figure 9(b), and Figure 11 is a right side view of Figure 9. The soundproof panel 2 has a rectangular frame body in which an upper frame 21 and a lower frame 22, each made of a long body, are connected by two vertical frames 23, and is formed into a rectangular box shape with a hollow portion inside by a front plate 24 and a back plate fixed to the front and rear sides of the frame body. The soundproof panel 2 is a sound-absorbing panel that houses sound-absorbing material in the hollow portion, and the back panel is provided to function as a sound-proof panel. In addition, a large number of circular through-holes 24a are formed over almost the entire front panel 24, so that noise from the front side passes through the through-holes 24a and reaches the sound-absorbing material inside, thereby reducing it. In other words, the soundproof panel 2 is installed with the front side, where the front panel 24 is located, facing the noise source. Note that in Figure 9(b), some of the through-holes 24a are omitted to simplify the drawing. The upper frame 21, lower frame 22, and vertical frames 23 are each formed from an extruded aluminum material. The front panel 24 is formed from a flat aluminum plate, and the rear panel is formed from a steel plate.

[0027] Each of the vertical frames 23 of the soundproof panel 2 is formed with a through-hole 23a that penetrates in the front-rear direction. Each through hole 23a is provided with a size that allows the male screw of the male screw member B1 to be inserted therethrough, and is formed in an arrangement corresponding to each screw hole 34a of the support 3.

[0028] Each of the vertical frames 23 is formed with a mounting portion 25 for mounting the fall prevention wire 6. The mounting portion 25 is formed in the shape of a substantially rectangular flat plate that protrudes outward in the longitudinal direction from the vertical frame 23, and has a through-hole 25a that passes through in the vertical direction and through which the engaging portion of the fall prevention wire 6 can be inserted. Two mounting portions 25 are provided on each vertical frame 23 at intervals in the vertical direction, for a total of four mounting portions 25.

[0029] 12 is a front view showing the cover member 4 shown in FIG. 1, and FIG. 13 is a right side view of FIG. The cover member 4 is an extruded aluminum member in the shape of a substantially rectangular flat plate, and the cross section perpendicular to the longitudinal direction has a substantially uniform shape over the entire surface. The cover member 4 has an engaging portion 42 formed on the top of a substantially flat plate-shaped main body 41, and the engaging portion 42 is formed in a curved plate shape that is provided with a substantially arcuate shape when viewed from the side. A packing P is attached to the lower part of the main body 41, and the packing P is attached so as to extend over the entire length of the main body 41.

[0030] The cover member 4 is provided so as to be attached to the soundproof panel 2 by engaging the engaging portion 42 with an engaging recess 22 a formed in the lower frame 22 . 14 is a right side view showing the state before the cover member 4 in FIG. 13 is attached to the soundproof panel 2 in FIG. The engaging recess 22a is a groove formed over the entire longitudinal length of the soundproof panel 2, and is provided near the front surface of the lower end of the lower frame 22. The engaging recess 22a is a groove that opens downward, and is provided with a cross-sectional shape that corresponds to the engaging portion 42. The cover member 4 is positioned at an angle with its lower end positioned further forward than its upper end, as shown in Figure 14, and the upper end of the engagement portion 42 is inserted into the opening of the engagement recess 22a.Then, the cover member 4 is rotated to insert the engagement portion 42 into the inside of the engagement recess 22a, and the engagement portion 42 is engaged with the engagement recess 22a to attach the cover member 4 to the lower frame 22.

[0031] FIG. 15 is a view showing the state in which the cover member 4 of FIG. 15, the cover member 4 is attached so as not to come off the lower frame 22 by engaging the curved plate-shaped engaging portion 41 with the engaging recess 22a. Furthermore, when the cover member 4 is attached to the lower frame 22, the packing P at the lower end is arranged to abut against the installation surface G, so that the installation surface G restricts the downward vertical movement of the cover member 4, making it even more difficult for the cover member 4 to come off the lower frame 22. The cover member 4 attached to the soundproof panel 2 can be removed from the lower frame 22 by performing the above-described procedure in reverse. That is, the cover member 4 is provided so as to be attachable and detachable from the front side of the soundproof panel 2.

[0032] The support 3 is provided so that the base 30 placed on the installation surface G is fixed to the installation surface G by a fixing member 5 . FIG. 16 is a right side view showing the state in which the support column 3 of FIGS. In FIG. 16, an anchor bolt AB is installed on an installation surface G, and the male thread portion of the anchor bolt AB protrudes vertically upward from the installation surface G and is embedded and fixed therein. The support 3 is installed on the installation surface G by placing the underside of the base 30 on the installation surface G, inserting the male threads of the anchor bolts AB into each of the through holes 30a of the base 30, and fastening a fixing member 5 consisting of a nut to the male threads. As shown in FIG. 16, the support column 3 is formed so that the mounting portion 35 is located above the fixing member 5 when the support column 3 is installed on the installation surface G.

[0033] The support 3 shown in FIG. 16 is in a state before the soundproof panel 2 is attached. The soundproof panel 2 is fixed to the support 3 by threading the male screw members B2, which have male screws inserted into the through holes 23a of the vertical frames 23, into the screw holes 34a. The front plate surface of the front plate 34 of the support pillar 3 serves as an abutment portion that abuts against the rear surface of the soundproof panel 2. The support pillar 3 is formed so that, when the lower frame 22 of the soundproof panel 2 is placed on the placement portion 35, the vertical positions of the through holes 23a correspond to the screw holes 34a. In other words, when the soundproof panel 2 is temporarily placed on the mounting portion 35, the longitudinal position can be adjusted to align the screw hole 34a with the through hole 23a, making it easier to perform the fixing work by screwing in the male screw member B2.

[0034] 17 is a side view showing the state in which the soundproof panel 2 of FIGS. 9 to 11 is fixed to the support 3 of FIG. 16, and FIG. 18 is a front view of FIG. 17 and 18 show a state in which one soundproof panel 2 is fixed to a support 3. The soundproof panel 2 shown in Figures 17 and 18 has a vertical frame 23 on one longitudinal side fixed to the support 3 in the figures with a male screw member B2, and the male screw of the male screw member B2 is inserted into the through hole 23a and screwed into the screw hole 34a of the support 3. 17 and 18, the vertical frame 23 (not shown) on the other side of the soundproof panel 2 is fixed in the same manner to another support pillar 3 (not shown) that is erected at an interval.

[0035] In the support 3 shown in FIG. 18, another soundproof panel 2 can be fixed in the same manner to the right side of the figure where no soundproof panel 2 is fixed. FIG. 19 shows the state in which a soundproof panel 2 and a fall prevention wire 6 are further attached to the support pole 3 of FIG. The soundproof panel 2 shown on the right side of Figure 19 has the vertical frame 23 on the left side of the figure fixed to the support pillar shown in Figure 19 with a male screw member B2, and the other vertical frame 23 (not shown) fixed to the support pillar 3 (not shown) in a similar manner.

[0036] Fall prevention wires 6 are attached to the support posts 3 and each soundproof panel 2 shown in FIG. The fall prevention wire 6 is inserted through the through hole 31b of the middle plate 31 and engaged with the support 3. The center of the wire portion of the fall prevention wire 6 is positioned near the through hole 31b, and one end is inserted from the bottom to the top in the vertical direction through the through hole 35a of the mounting portion 35 and the through holes 25a of each mounting portion 25 of one soundproof panel 2, and engaged with the engaging portion 31a of the middle plate 31 of the support 3. Similarly, the other end of the fall prevention wire 6 is inserted through the other through hole 35a of the mounting portion 35 and the through holes 25a of each mounting portion 25 of the other soundproof panel 2, and engaged with the engaging portion 31a. The fall prevention wire 6 can be inserted through the through hole 35a formed in the mounting portion 35 on which the soundproof panel 2 is placed, and can engage with the support 3 at the mounting portion 35 closer to the soundproof panel 2.

[0037] By attaching the fall prevention wire 6 so that it spans the support 3 and each soundproof panel 2 as described above, even if the soundproof panel 2 is released from its fixation by the male screw member B2 due to a vehicle or other object colliding with the soundproof wall 1, the fall prevention wire 6 inserted into the mounting portion 25 can prevent the soundproof panel 2 from completely detaching from the support 3.

[0038] 19, the fall prevention wire 6 can be seen from the front side at a portion above the mounting portion 35 of the support pole 3, so its condition can be inspected from the front side visually or with tools. Also, the fall prevention wire 6 can be seen below the mounting portion 35 from between the lower frame 22 of each soundproof panel 2 and the installation surface G, so its condition can be inspected from the front side visually or with tools.

[0039] 19, the lower frame 22 is placed on the mounting portion 35 of the support 3 and fixed to the support 3, and the lower frame 22 is positioned away from the installation surface G. Furthermore, each soundproof panel 2 is fixed to the support 3 with the lower frame 22 positioned above the fixing member 5 that fixes the support 3 to the installation surface. By installing each soundproof panel 2 in this manner, it is possible to inspect the condition of each of the fixing members 5 from the front side of the soundproof wall 1. Specifically, all of the fixing members 5 can be seen through the gap between the lower frame 22 and the installation surface G, so it is possible to check for looseness, damage, etc. for all of the fixing members 5 visually or using tools, inspection equipment, etc. Since all of the fixing members 5 of the soundproof wall 1 can be inspected from the front side, which is the noise source side, even if the soundproof wall 1 is installed on a viaduct, for example, the condition of all of the fixing members 5 can be inspected from the road side where vehicles travel, which is the noise source side, without the need for workers to go outside the viaduct.

[0040] 19, the cover member 4 can be attached to the engaging recess 22a of the bottom frame 22 in the same manner as the cover member 4 shown in FIGS. 14-15. By attaching the cover member 4, the gap between the bottom frame 22 and the installation surface G is blocked by the cover member 4, so that noise generated from a noise source in the front side is prevented from passing through the gap, thereby reducing noise to the rear side. Furthermore, since the packing P is arranged to abut against the installation surface G when the cover member 4 is attached to the bottom frame 22, the gap between the bottom frame 22 and the installation surface G is further reduced, thereby effectively reducing noise to the rear side.

[0041] The cover body 5 can be attached to the support pillar 3 shown in Fig. 19 by using a male screw member B1 that screws into the mounting portion 36. The soundproof wall 1 shown in Fig. 1 is formed by attaching the lid member 4 to each soundproof panel 2 shown in Fig. 19 and then attaching the cover body 5 to the support pillar 3. 1, the condition of the fixing members 5 that fix the posts 3 can be inspected from the front side by removing the cover body 5 and the lid member 4. In addition, by removing the cover body 5 and the lid member 4, the condition of the fall prevention wires 6 can be inspected from the front side in the same way as the fixing members 5.

[0042] The soundproof wall 1 according to the present invention is not limited to the above embodiment, and various modifications are possible without departing from the gist of the present invention. 3 to 8 has a stepped mounting portion 35 that protrudes forward from the front plate 34, but this is not limiting. The side plates 33 of the pillar 3 may not be formed, and the stepped mounting portion 35 may be formed to protrude outward in the longitudinal direction from the middle plate 31. In such a pillar 3, the soundproof panel 2 may be inserted between the front plate 34 and the rear plate 32 from above the pillar 3, placed on the mounting portion 35, and fixed to the pillar 3. [Explanation of symbols]

[0043] 1. Soundproof walls 2. Soundproofing panels 21 Upper frame 22 Bottom frame 23 Vertical Frame 24 Front plate 25 Mounting part 3 pillars 30 base 31 Middle Plate 32 Rear plate 33 Side panel 34 Front panel 35 Placement section 36 Mounting part 4 Cover member 41 Main body 42 Engagement part 5 Cover body P packing

Claims

1. A soundproof wall comprising a support and a soundproof panel, The support column is fixed to an installation surface by a fixing member and stands upright. The support pole has a stepped mounting portion, and the soundproof panel (with its lower end) is mounted on the mounting portion and fixed to the support pole vertically upward from the installation surface, A soundproof wall characterized in that the lower end of the soundproof panel is arranged above the fixing member, and the fixing member can be seen from the noise source side or the side opposite to the noise source.

2. 2. The soundproof wall according to claim 1, wherein all of the fixing members are visible from the noise source side.

3. 2. The soundproof wall according to claim 1, wherein a lid member is movably attached below the soundproof panel, and the lid member closes the gap between the installation surface and the soundproof panel.

4. 4. The soundproof wall according to claim 1, further comprising a fall prevention wire that is attached so as to span between the support and the soundproof panel, and the fall prevention wire is arranged so as to pass through the placement portion.

Images