Sound absorbing board

Abstract

To provide an acoustical board used for a sound absorbing wall provided to a roadside of a highway or the like and capable of efficiently discharging rainwater or the like which has entered a panel body.SOLUTION: An acoustical board 1 having a sound absorbing material 14 inside a panel body comprises: a drain rail 17 which is disposed below the sound absorbing material 14 inside the panel body and which extends in the longitudinal direction of the panel body and inclines in a direction along the longitudinal direction; and a drain port formed near a place where the drain rail 17 is at the lowest position.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a sound absorbing panel for use in sound absorbing walls provided on the side of roads such as expressways. [Background technology]

[0002] 2. Description of the Related Art In order to reduce noise caused by the sound of vehicles traveling, etc., sound absorbing walls are installed along the sides of roads, for example on expressways and the like. A typical structure for this type of sound-absorbing wall is one in which multiple sound-absorbing panels are sandwiched between the flanges of multiple H-shaped steel beams that are set up like pillars on the parapet (stacking them in layers) to form a wall. Sound-absorbing panels have a panel body with sound-absorbing material inside, and the panel body has holes such as louvers formed in it. However, corrosion can sometimes be a problem due to rainwater, etc., seeping into the interior through the holes in the louvers, etc. Patent Documents 1 to 4 disclose techniques aimed at preventing such corrosion caused by rainwater or the like that has penetrated into the panel body. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 4684018 [Patent Document 2] Utility Model Registration No. 3187101 [Patent Document 3] Patent No. 6084550 [Patent Document 4] Patent No. 6201194 Summary of the Invention [Problem to be solved by the invention]

[0004] The techniques disclosed in Patent Documents 1 to 4 basically all involve forming holes in the lower part of a panel body and draining rainwater and the like that has entered the inside of the panel body through the holes. In these conventional technologies, the bottom surface of the panel body is inclined toward the front side (road side) or the back side (private land side), so that rainwater and the like is collected toward the front side (road side) or the back side (private land side) and drained through holes provided in the bottom surface of the panel body. When viewed from the front side (road side) to the back side (private land side), these methods allow for smooth drainage, but when viewed in the longitudinal direction of the panel body (the direction along the road), they do not necessarily allow for smooth drainage. A number of drainage holes are provided at regular intervals along the longitudinal direction of the panel body, but rainwater and the like may remain in the areas between these holes.

[0005] In view of the above, an object of the present invention is to provide a sound-absorbing panel for use in sound-absorbing walls installed on the side of roads such as expressways, which is capable of more efficiently draining rainwater and the like that has penetrated into the inside of a panel body. [Means for solving the problem]

[0006] (Configuration 1) A sound-absorbing board having a sound-absorbing material inside a panel body, characterized in that the sound-absorbing board has a drainage rail arranged below the sound-absorbing material inside the panel body, extending along the longitudinal direction of the panel body, and inclined in a direction along the longitudinal direction, and a drainage outlet formed near the point where the drainage rail is lowest.

[0007] (Configuration 2) The sound-absorbing panel described in configuration 1, characterized in that the drain rail is inclined from the center of the longitudinal direction toward both ends of the panel body, and the drain outlet is formed near the longitudinal ends.

[0008] (Configuration 3) The sound-absorbing panel described in configuration 1, characterized in that the drain rail is inclined from both ends in the longitudinal direction toward the center of the panel body, and the drain outlet is formed near the center in the longitudinal direction.

[0009] (Configuration 4) The sound-absorbing panel according to any one of configurations 1 to 3, wherein the drain rail has a substantially U-shaped cross section.

[0010] (Configuration 5) 5. The sound-absorbing panel according to any one of configurations 1 to 4, wherein the drain rail is also inclined with respect to the horizontal plane in a direction perpendicular to the longitudinal direction.

[0011] (Configuration 6) A sound-absorbing panel as described in any one of configurations 1 to 5, characterized in that it is provided with a hood member extending along the longitudinal direction of the panel body, one end of the panel body in the front-to-back direction contacting the back side of the front face, the other end being arranged within the drainage rail, and inclined from the one end side to the other end side.

[0012] (Configuration 7) The sound-absorbing panel according to any one of configurations 1 to 6, further comprising a support member disposed within the drainage rail and supporting the sound-absorbing material with a gap between the drainage rail and the sound-absorbing material.

[0013] (Configuration 8) 3. The sound-absorbing panel according to configuration 2, wherein the drainage hole is formed on a side surface of the panel body. Effect of the Invention

[0014] According to the sound-absorbing panel of the present invention, by providing a drainage rail that extends along the longitudinal direction of the panel body and is inclined in a direction along the longitudinal direction, it becomes possible to more efficiently drain rainwater and other water that has entered the inside of the panel body. [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 is a diagram showing a sound-absorbing board according to a first embodiment of the present invention; [Diagram 2] FIG. 1 is a diagram showing an outline of the internal structure of a sound-absorbing panel according to a first embodiment; [Diagram 3] FIG. 1 shows a drainage rail according to the first embodiment. [Figure 4]FIG. 1 shows a drainage rail according to the first embodiment. [Diagram 5] FIG. 1 is a diagram showing a rail support member for tilting the drainage rail of the first embodiment. [Figure 6] FIG. 1 is a diagram showing a hood member according to the first embodiment. [Figure 7] FIG. 1 is a diagram showing a support member that supports the sound-absorbing material of the first embodiment. [Figure 8] FIG. 1 is a partially enlarged view showing an outline of the internal structure of the sound-absorbing panel of the first embodiment. [Figure 9] A conceptual diagram illustrating the function of the sound-absorbing plate of the first embodiment. [Figure 10] FIG. 1 is a diagram showing a sound-absorbing plate according to a second embodiment of the present invention; [Figure 11] FIG. 13 is a schematic diagram showing the internal structure of a sound-absorbing plate according to a second embodiment. [Figure 12] FIG. 1 shows a drain rail according to a second embodiment. [Figure 13] FIG. 1 shows a drain rail according to a second embodiment. [Figure 14] FIG. 13 is a diagram showing a rail support member for tilting the drainage rail of the second embodiment. [Figure 15] FIG. 13 is a diagram showing a rail support member for tilting the drainage rail of the second embodiment. [Figure 16] FIG. 13 is a diagram showing a support member for supporting the sound-absorbing material of the second embodiment. [Figure 17] FIG. 13 shows a drainage outlet water guide member according to a second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. Note that the following embodiment is one form for embodying the present invention, and is not intended to limit the scope of the present invention.

[0017] <Embodiment 1> FIG. 1 shows a sound-absorbing panel according to a first embodiment of the present invention, where FIG. 1(a) is a front view, FIG. 1(b) is a top view, FIG. 1(c) is a bottom view, and FIG. 1(d) is a side view. FIG. 2 is a schematic diagram showing the internal structure of the sound-absorbing plate (a cross-sectional view taken along a cross section perpendicular to the longitudinal direction in the vicinity of an end portion in the longitudinal direction of the panel body). In the following explanation, the longitudinal direction of the panel body (the left-right direction in Fig. 1(a), which is the direction along the road when installed at the side of the road) is simply referred to as the "longitudinal direction." The direction perpendicular to the longitudinal direction and the vertical direction (the left-right direction in Fig. 1(d), which is the width direction of the road when installed at the side of the road) is referred to as the "thickness direction."

[0018] The sound-absorbing panel 1 of this embodiment is used in a sound-absorbing wall installed at the side of a road. The sound-absorbing board 1 is provided with sound-absorbing material 14 inside a box-shaped panel body 11 composed of a front part 111, a back part 112, and a side part 113 in which holes such as louvers 12 are formed (note that the top and bottom are formed by folding back the back part 112 (or the front part 111)). This basic structure itself is the same as that of a conventional one, and further detailed explanation will be omitted here.

[0019] Sound absorbing board 1 is A drainage rail 17 is disposed below the sound-absorbing material 14 inside the panel body, extends along the longitudinal direction, and is inclined toward the end portion in the longitudinal direction (i.e., is inclined in the direction along the longitudinal direction); A drainage hole 15 formed in a side portion 113 of the panel body; A hood member 18 that extends along the longitudinal direction, has one end in the thickness direction (direction from the front to the back) contacting the back side of the front portion 111, and has the other end disposed within the drain rail 17, and is inclined from one end side to the other end side; a support member 16 disposed within the drainage rail 17 and supporting the sound-absorbing material 14 with a gap between the drainage rail 17 and the sound-absorbing material 14; A rail support member 13 that supports the drainage rail 17 while inclining the drainage rail 17; It is equipped with:

[0020] FIG. 3 is a top view of the drain rail 17, and FIG. 4 is a side view. The drain rail 17 has a bottom surface 172, a front surface 171, and a back surface 173, and is substantially U-shaped in cross section, thereby functioning as a "gutter." 4, a locking portion 174 is formed by folding back the tip of the front surface 171. The locking portion 174 is for locking the hood member 18 described below. The rear surface 173 is provided with a bent portion 1731. The bent portion 1731 is intended to increase the strength of the rear surface 173.

[0021] FIG. 5 shows the rail support member 13, where FIG. 5(a) is a rear end view, FIG. 5(b) is a plan view, and FIG. 5(c) is a front end view. The rail support member 13 is a member that supports the drain rail 17 while giving the drain rail 17 an inclination with respect to the horizontal plane, and is basically a plate-shaped member with a ridge portion 131 formed thereon. As shown in FIG. 1(c), the rail support member 13 is fixed by a rivet R on the inside of the bottom surface portion of the panel body, approximately in the center in the longitudinal direction. A drain rail 17 is disposed on top of this rail support member 13, and both ends of the drain rail 17 are fixed to the bottom surface of the panel body by rivets R. That is, the vicinity of the center in the longitudinal direction of the drain rail 17 is raised by the ridges 131 of the rail support member 13 compared to both ends. As a result, the drain rail 17 is configured to be inclined with respect to the horizontal plane from the center in the longitudinal direction toward both ends of the panel body.

[0022] FIG. 6 is a diagram showing the shape of a cross section perpendicular to the longitudinal direction of the hood member 18. As shown in FIG. The hood member 18 extends longitudinally for approximately the same length as the drain rail 17, and covers the area between the drain rail 17 and the front surface of the panel body (the back surface of the front portion 111), reducing the amount of rainwater and the like falling onto the bottom surface of the panel body between the drain rail 17 and the front surface of the panel body. The hood member 18 in this embodiment is a plate-shaped member made of rubber, and an engagement portion 181 is formed approximately in the center of the width on the bottom side to receive and engage the locking portion 174 of the drain rail 17.

[0023] 7A and 7B are diagrams showing the support member 16, where FIG. 7A is a diagram seen from the side, FIG. 7B is a diagram seen from the front, and FIG. 7C is a plan view. The support member 16 is a member that supports the sound absorbing material 14 with a gap between the drain rail 17 and the sound absorbing material 14, and is a substantially Z-shaped member in this embodiment as shown in FIG. In this embodiment, the sound-absorbing material 14 is supported by two support members 16, but three or more support members 16 may be used, or the sound-absorbing material 14 may be supported by one support member having a longer length in the longitudinal direction.

[0024] FIG. 8 is an enlarged view of the lower portion of FIG. As shown in FIG. 8, the panel body has a front portion 111 and a rear portion 112 joined at the lower end of the front surface by a seam fitting F, and the bottom surface of the panel body is inclined from the front to the rear (this configuration itself is similar to that of a conventional panel body). The drain rail 17 is disposed on the bottom surface of the panel body, and is therefore inclined from the front to the back in the width direction (inclined with respect to the horizontal plane in the direction perpendicular to the longitudinal direction). In addition, as described above, since it is raised by the ridges 131 of the rail support member 13 near the longitudinal center, it is inclined with respect to the horizontal plane from the longitudinal center toward both ends of the panel body. Furthermore, one widthwise end of the hood member 18 contacts the rear surface side of the front portion 111, and the other end is disposed within the drain rail 17, and is inclined from one end side to the other end side with respect to the horizontal plane.

[0025] The sound-absorbing board 1 of the present embodiment has the above-mentioned configuration, and thus can drain rainwater and the like that has entered the inside of the panel body 11 more efficiently. FIG. 9 is a conceptual diagram illustrating the drainage effect of the sound absorbing board 1. As shown in FIG. As shown by the arrows in Fig. 9 as the path along which rainwater flows, rainwater that has entered the interior of panel body 11 drips downward and is guided to drain rail 17. Since the bottom surface of drain rail 17 has a water gradient from the front to the back, rainwater is collected on the back side of drain rail 17, and since a water gradient is provided from the center of drain rail 17 in the longitudinal direction to both ends, rainwater flows toward both ends in the longitudinal direction, and is discharged to the outside from drain outlet 15 formed in side portion 113 of the panel body (i.e., near the point where the drain rail is lowest).

[0026] As described above, according to the sound-absorbing board 1 of this embodiment, rainwater and the like that has entered the inside of the panel body can be efficiently drained. Conventional sound-absorbing panels allow for smooth drainage when viewed from the front side (road side) to the back side (private land side), but when viewed in the longitudinal direction, rainwater and the like may remain between the drainage holes that are provided at regular intervals in the longitudinal direction. In contrast, the sound-absorbing panel 1 of this embodiment is provided with drainage rails that extend along the longitudinal direction of the panel body and are inclined toward the longitudinal end, allowing rainwater and the like that has entered the inside of the panel body to be drained more efficiently.

[0027] In the sound-absorbing panel 1 of this embodiment, the hood member 18 guides rainwater and the like that runs down the back side of the front portion 111 into the drainage rail 17, thereby preventing rainwater and the like from entering the seam fitting F and preventing corrosion of the seam fitting F. In addition, the drain rail 17 itself may be disposed so as to contact the back side of the front portion 111, so that rainwater, etc., that runs down the back side of the front portion 111, can be guided into the drain rail 17 (the hood member 18 is not necessarily required). However, by using the hood member 18 formed of an elastic or flexible member such as rubber or resin, as in this embodiment, the adhesion to the back side of the front portion 111 is high, and rainwater, etc. can be guided into the drain rail 17 more reliably.

[0028] In this embodiment, the drain rail 17 is inclined from the center to both ends in the longitudinal direction, but the present invention is not limited to this. For example, the drain rail 17 may be inclined in one direction from one end to the other end in the longitudinal direction. However, the road on which the sound-absorbing panel 1 is installed may have an upward or downward gradient, and if the slope of the drainage rail becomes almost horizontal in relation to these gradients, the drainage effect may be reduced. If the drainage rail is inclined in only one direction in the longitudinal direction, this problem may become more severe, so it is preferable to have the drainage rail inclined in both directions from the center, as in this embodiment.

[0029] In this embodiment, the drain outlet 15 is formed in the side surface 113 of the panel body, and the drain outlet is formed at a position aligned with the end of the drain rail 17 that leads to the side surface 113. Here, the drain rail 17 may be provided so as to protrude slightly from the side surface 113 through the drain outlet 15. This allows rainwater to be more reliably guided out of the panel body. In this embodiment, an example is given of a drain outlet being formed on the side portion of the panel body, but the present invention is not limited to this, and the drain outlet may be formed on the bottom surface of the panel body near the longitudinal end portion, for example.

[0030] <Embodiment 2> FIG. 10 shows a sound-absorbing board according to a second embodiment of the present invention, where FIG. 10(a) is a front view, FIG. 10(b) is a top view, FIG. 10(c) is a bottom view, and FIG. 10(d) is a side view. FIG. 11 is a diagram showing an outline of the internal structure of the sound-absorbing board (a cross-sectional view taken along a plane perpendicular to the longitudinal direction of the panel body). In addition, the same reference numerals are used for components having the same configuration as in the first embodiment, and the description thereof will be omitted or simplified.

[0031] The concept of the second embodiment is the same as that of the first embodiment, that is, that the panel has a drain rail that is inclined in the longitudinal direction and a drain hole formed near the point where the drain rail is at its lowest. However, in the sound-absorbing panel 1' of the second embodiment, the drain rail is inclined from both longitudinal ends toward the center, and the drain hole is formed to open on the front side of the panel body near the longitudinal center. As shown in FIG. 10(a), the drain hole 15' is formed in the central lower part of the front portion 111'. The front portion 111' has the same configuration as the front portion 111 of the first embodiment, except that the drain hole 15' is formed.

[0032] Fig. 12(a) is a front view of the drain rail 17' of this embodiment, Fig. 12(b) is a top view, and Fig. 13 is a side view. The drain rail 17' has a bottom surface 172', a front surface 171', a back surface 173', and both side surfaces 175. Since it has a generally U-shaped cross section, it functions as a "gutter" like in the first embodiment. In this embodiment, as described above, "the drain rail is inclined from both ends in the longitudinal direction toward the center," or to put it in extreme terms, the drain rail 17' is provided in a V shape. In order to achieve this V-shaped arrangement, a slit 1732 (notch) is formed in the back surface 173'. The presence of the slit 1732 reduces stress generated in the drain rail 17' when the drain rail 17' is installed in a V shape. Further, a notch 176 is formed near the center of the drain rail 17'. The notch 176 guides rainwater that collects in the center due to the drain rail 17' being arranged in a V-shape to the drain outlet water guide member 19, which will be described later. The notch 176 is formed by cutting out the front side of the bottom surface 172' and the front surface 171'. As in the first embodiment, a locking portion 174' (a portion that locks the hood member 18) is formed by folding back at the tip of the front surface 171'. The hood member is similar in concept to the first embodiment, and therefore will not be described here.

[0033] Figures 14 and 15 show rail support members 13A and 13B, respectively, with Figures 14(a) and 15(a) being end views, Figures 14(b) and 15(b) being plan views, and Figures 14(c) and 15(c) being side views. Rail support members 13A and 13B are members that support drain rail 17' while inclining drain rail 17' relative to the horizontal plane, and as shown in Figures 14 and 15, are Z-shaped members having an upper surface portion 134, a bottom surface portion 132, and a vertical portion 133. Rail support member 13A and rail support member 13B have the same configuration except that they have different heights due to different dimensions of vertical portion 133. The rail support members 13A and 13B have bottom surfaces 132 fixed to the bottom surface of the panel body by riveting or the like, and top surfaces 134 fixed to the drain rail 17' by riveting or the like. In this embodiment, the drain rail 17' is supported at both ends of its bottom surface 172' (position RA in FIG. 12(b)) by rail support members 13A with a larger vertical dimension, and at the approximate center of the bottom surface 172' (position RB in FIG. 12(b)) by rail support member 13B with a smaller vertical dimension. This allows the drain rail 17' to be configured to incline from both longitudinal ends toward the center. 14(c) and 15(c), the rail support members 13A and 13B have an upper surface portion 134 inclined relative to the bottom surface portion 132 in a side view. Due to this inclination, as can be seen from Fig. 11, the bottom surface of the drain rail 17' is configured to be inclined toward the front side. In other words, the relative angle between the bottom surface portion 132 and the upper surface portion 134 of the rail support members 13A and 13B is configured to be larger than the inclination angle of the bottom surface of the panel body relative to the horizontal plane. With the above-described configuration, rainwater guided to the drain rail 17' is guided to the front side of the center portion of the drain rail 17', i.e., to the notch 176 of the drain rail 17'.

[0034] FIG. 16 shows a support member 16', where FIG. 16(a) is a view from the side, FIG. 16(b) is a view from the front, and FIG. 16(c) is a plan view. The support member 16' is a member that supports the sound-absorbing material 14 by providing a gap between the drain rail 17' and the sound-absorbing material 14, and although its shape is different from the support member 16 of embodiment 1, it is conceptually similar, and further explanation will be omitted here.

[0035] FIG. 17 shows the drain port water guide member 19, where FIG. 17(a) is a front view, FIG. 17(b) is a bottom view, and FIG. 17(c) is a side view. The drain outlet water guide member 19 is attached to the lower side of the notch 176 of the drain rail 17' and guides rainwater to the drain outlet 15', and is a tray-shaped member that opens at the front side. As shown in Figures 17(a) to (c), the drain outlet water guide member 19 has a bottom surface 192, a back surface 194, and both side surfaces 193, and has a tray-like structure that opens at the front side, and has an attachment portion 191 for attachment to the bottom side of the drain rail 17'. 17(c), the mounting portion 191 is formed to be inclined with respect to the bottom surface 192. As a result, the bottom surface 192 is inclined downward toward the front side (front surface side), and rainwater can be efficiently drained toward the front side. The tip of the drain outlet water guide member 19 (the upper side in Figs. 17(b) and (c)) is connected to the drain outlet 15'. If the tip of the drain outlet water guide member 19 is arranged to protrude slightly to the outside from the drain outlet 15', rainwater is more reliably discharged to the outside of the panel body.

[0036] According to the sound absorbing board 1' of this embodiment, by virtue of having the above-mentioned configuration, like the first embodiment, rainwater and the like that has entered the inside of the panel body can be efficiently drained. That is, rainwater that has entered the inside of the panel body 11 drips downward and is guided to the drain rail 17'. And, because the bottom surface of the drain rail 17' has a water gradient from the back surface to the front surface, rainwater is collected on the front side of the drain rail 17', and because a water gradient is provided from both longitudinal ends of the drain rail 17' toward the center, the rainwater flows toward the center and is discharged to the outside through the drain outlet 15' formed in the center of the panel body (i.e., the point where the drain rail is lowest) via the drain outlet water guide member 19.

[0037] In this embodiment, an example is given of a drain outlet being formed on the front portion of the panel body, but the present invention is not limited to this, and the drain outlet may be formed on the bottom surface of the panel body near the center in the longitudinal direction, for example. [Explanation of symbols]

[0038] 1...Sound absorbing board 11...Panel body 14...Sound absorbing material 15...Drain port 16...Support member 17...Drain rail 18...Hood parts

Claims

1. A sound-absorbing panel having a sound-absorbing material inside a panel body, A drainage rail is disposed below the sound-absorbing material inside the panel body, extends along the longitudinal direction of the panel body, and is inclined in a direction along the longitudinal direction; A rail support member that lifts and supports a portion of the drainage rail to impart a slope to the drainage rail in a direction along the longitudinal direction; A drainage hole formed near the lowest point of the drainage rail; A sound-absorbing panel comprising:

2. The sound-absorbing panel according to claim 1, characterized in that the drain rail is inclined from the center in the longitudinal direction toward both ends of the panel body, and the drain hole is formed near the longitudinal ends.

3. The sound-absorbing panel according to claim 1, characterized in that the drain rail is inclined from both ends in the longitudinal direction toward the center of the panel body, and the drain hole is formed near the center in the longitudinal direction.

4. 4. The sound-absorbing panel according to claim 1, wherein the drain rail has a substantially U-shaped cross section.

5. 5. The sound-absorbing panel according to claim 1, wherein the drain rail is also inclined with respect to the horizontal plane in a direction perpendicular to the longitudinal direction.

6. A sound-absorbing panel having a sound-absorbing material inside a panel body, A drainage rail is disposed below the sound absorbing material inside the panel body, extends along the longitudinal direction of the panel body, and is inclined in a direction along the longitudinal direction; A drainage hole formed near the lowest point of the drainage rail; A hood member extending along the longitudinal direction of the panel body, one end of the panel body in the direction from the front to the back surface thereof contacting the back surface side of the front surface, the other end being disposed within the drain rail, and inclined from the one end side to the other end side; A sound-absorbing panel comprising:

7. A sound-absorbing board as described in any of claims 1 to 6, characterized in that the dimension along the longitudinal direction is shorter than that of the drain rail, the support member is arranged within the drain rail, and supports the sound-absorbing material with a gap between the drain rail and the sound-absorbing material.

8. 3. The sound-absorbing panel according to claim 2, wherein the drainage hole is formed in a side surface of the panel body that is perpendicular to the longitudinal direction.

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