Sound absorbing panel and sound absorbing panel installation structure

Abstract

To provide a sound absorbing panel capable of being installed easily irrespective of the shape of the sound absorbing panel or a wall surface of a room, and to provide an installation structure of the same.SOLUTION: A sound absorbing panel (1) includes: a rear surface (11) arranged in close contact with a wall surface (W) of a room; a front surface (12) positioned at a thickness interval from the rear surface; and a bottom surface (13). The sound absorbing panel includes a sound absorbing material inside. The sound absorbing panel includes a first leg part (21) and a second leg part (22), which is at a position separated from the first leg part, only in a region positioned further on the front surface side than a thickness center line (C) crossing the center of the thickness out of the bottom surface (13).SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a sound-absorbing panel and an installation structure for installing the same in a room. [Background technology]

[0002] Sound-absorbing panels are generally fixed to the wall surface with screws, double-sided tape, etc. However, this method has the problem that it can only support lightweight sound-absorbing panels.

[0003] 8, when the sound-absorbing panel 100 is fixed in a "stomp-on" manner, a heavy sound-absorbing panel can be supported, but the crosspiece members 130 must be fixed to the wall surface with screws, which can damage the wall surface W. Also, since the stomp-on structures 120, 130 require thickness, there are cases where the thickness of the sound-absorbing panel 100 must be reduced.

[0004] Furthermore, Japanese Patent Laid-Open Publication No. 2009-264029 (Patent Document 1) discloses a movable, free-standing sound-absorbing panel. Patent Document 1 discloses that the sound-absorbing panel is provided with legs whose length is greater than the thickness of the sound-absorbing panel in order to make the panel free-standing. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2009-264029 A Summary of the Invention [Problem to be solved by the invention]

[0006] The sound-absorbing panel of Patent Document 1 could not be installed close to the wall of a room because the floor surface length of the legs is long. However, since sound pressure in a room generally has a maximum value on the wall, the sound-absorbing panel 200 of Patent Document 1, which is far from the wall, often absorbs sound in areas where the sound pressure is low, and the sound-absorbing performance is often reduced.

[0007] The present invention has been made to solve the above-mentioned problems, and its object is to provide a sound-absorbing panel that can be easily installed on a wall surface regardless of the shape of the sound-absorbing panel or the wall surface of a room. [Means for solving the problem]

[0008] A sound-absorbing panel according to one aspect of the present invention has a back surface that is placed in close contact with a wall surface of a room, a front surface that is located across the thickness from the back surface, a bottom surface, and has sound-absorbing material inside. The sound-absorbing panel has a first leg portion and a second leg portion located away from the first leg portion only in an area of ​​the bottom surface that is located on the front side of a thickness center line that crosses the center of the thickness.

[0009] Preferably, the first leg and the second leg each include a cuttable portion at a predetermined height.

[0010] Preferably, the first leg and the second leg each have a tip shaped to make point contact with the floor surface.

[0011] Preferably, the sound-absorbing panel comprises a frame material surrounding the sound-absorbing material with the sound-absorbing material protruding from the front surface, a fabric material covering the sound-absorbing material and the frame material from the front surface side and attached so that its edge wraps around the rear surface of the frame material, and a backing plate having a thickness dimension equal to or greater than that of the fabric material and attached to the rear surface of the frame material.

[0012] Preferably, the sound absorbing panel is pre-fitted with fastening means in an upper region of the rear surface, by which it can be fastened to a wall surface.

[0013] Preferably, the sound-absorbing panel has two side surfaces arranged in close contact with the corner wall surfaces of a room, a front surface connecting the front ends of the side surfaces, and a bottom surface, and has a sound-absorbing material inside. The sound-absorbing panel has a first leg only in a one-third area of ​​the bottom surface located on the front surface side when a perpendicular line extending from the intersection of the two side surfaces to the front surface is divided into thirds, and a second leg located away from the first leg.

[0014] Preferably, the sound-absorbing panel has a top surface and a bottom surface, a cross-sectional shape is circular, and has a sound-absorbing material therein. The sound-absorbing panel has a first leg and a second leg located away from the first leg only in one of two regions of the bottom surface that are bisected by the center line of the circle.

[0015] A sound-absorbing panel installation structure according to one aspect of the present invention includes a wall surface of a room, and a sound-absorbing panel having a front surface, a back surface, and a bottom surface, with sound-absorbing material inside, and with the back surface placed in close contact with the wall surface. The sound-absorbing panel includes a first leg only in an area of ​​the bottom surface that is located on the front side of a thickness center line that crosses the center of the thickness, and a second leg located away from the first leg. The sound-absorbing panel includes a fixing means that connects and fixes the sound-absorbing panel to the wall surface in a state in which the sound-absorbing panel is supported from below by the first leg and the second leg and leans against the wall surface.

[0016] The sound-absorbing panel installation structure preferably has a baseboard provided at the lower end of the wall of the room, and the first leg and the second leg desirably have a height dimension equal to or greater than the height of the baseboard. Effect of the Invention

[0017] According to the present invention, since the sound-absorbing panel has a structure that allows it to lean against the wall of a room, a sound-absorbing panel and an installation structure thereof that can be easily installed regardless of the shape of the sound-absorbing panel or the wall of a room are provided. [Brief description of the drawings]

[0018] [Figure 1]1A and 1B are diagrams showing a sound-absorbing panel according to an embodiment of the present invention, in which (a) is a perspective view from the front, and (b) is a view from the right side. [Diagram 2] 1 is an explanatory diagram of a sound-absorbing panel according to an embodiment of the present invention. [Diagram 3] FIG. 1 is a schematic cross-sectional view of a sound-absorbing panel according to an embodiment of the present invention, where (a) is embodiment 1, (b) is a modified example of the sound-absorbing material, and (c) is a modified example of the frame material. [Figure 4] 1A and 1B are diagrams showing schematic views of legs of a sound-absorbing panel according to an embodiment of the present invention, in which (a) is a first modified example of the leg, and (b) is a second modified example of the leg. [Diagram 5] 1A and 1B are diagrams showing a sound-absorbing panel according to a second embodiment of the present invention, in which (a) is a perspective view from the front, and (b) is a plan view. [Figure 6] 10A and 10B are diagrams showing a sound-absorbing panel according to a third embodiment of the present invention, in which (a) is a perspective view from the front, and (b) is a plan view. [Figure 7] 10A and 10B are diagrams showing a sound-absorbing panel according to a fourth embodiment of the present invention, in which (a) is a perspective view from the front, and (b) is a plan view. [Figure 8] FIG. 1 is a diagram illustrating a conventional sound-absorbing panel. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference characters and their description will not be repeated.

[0020] <Structure of sound-absorbing panel according to the first embodiment> An example of the structure of a sound-absorbing panel 1 according to the present embodiment will be described with reference to Figures 1, 2, and 3(a). Figure 1 is a diagram that shows a model of a sound-absorbing panel according to the embodiment of the present invention. Figure 2 is an explanatory diagram of a sound-absorbing panel according to the embodiment of the present invention. Figure 3(a) is a diagram that shows a model of a cross-section of a sound-absorbing panel according to embodiment 1 of the present invention. In the diagram, arrow A1 indicates the left-right direction (width direction) of the sound-absorbing panel 1, arrow A2 indicates the up-down direction (height direction) of the sound-absorbing panel, and arrow A3 indicates the thickness direction (front-rear direction) of the sound-absorbing panel 1.

[0021] The sound-absorbing panel 1 has a basic structure comprising a back surface 11 that is placed closely against the wall surface W of a room, a main body 10 having a front surface 12 located at a distance of thickness from the back surface 11, a bottom surface 13, a top surface 14 and side surfaces 15, legs 2 provided on the bottom surface 13 of the main body 10, and a sound-absorbing material 3 housed inside the main body 10.

[0022] 2, the room 9 in which the sound-absorbing panel 1 according to this embodiment is installed is a room surrounded by a plurality of side walls 91, a floor 92, and a ceiling 93. In this embodiment, for example, a wall surface W of one of the plurality of side walls 91 has the sound-absorbing panel 1 for absorbing sound generated in the room. Note that since the sound-absorbing panel 1 of this embodiment is installed so as to lean against the wall surface W, the load required for fixing is less than that of the conventional art. For this reason, the heavy sound-absorbing panel 1 can be applied even to a side wall 91 that does not include a base material.

[0023] The sound absorbing material 3 is preferably made of a common fiber-based sound absorbing material such as glass wool, rock wool, polyester, etc. The thickness of the sound absorbing material 3 can be determined so as to obtain a desired sound absorbing effect. The fiber-based sound absorbing material is formed by intertwining fibers in a complex manner.

[0024] Although the sound-absorbing material 3 in this embodiment is a fiber-based sound-absorbing material, a foamed plastic sound-absorbing material may be used from the viewpoint of ease of forming a sound-absorbing panel. Also, a natural material sound-absorbing material such as cork may be used.

[0025] Fig. 3(b) shows a modified example of the sound-absorbing material 3, characterized in that the sound-absorbing material 3A is stored in the frame material 4 so as to protrude from the front surface 12A of the frame material 4. This makes it possible to provide rounded corners R of the sound-absorbing panel 1A when the sound-absorbing material 3A and the frame material 4 are covered with the fabric material 5. This not only improves the design but also improves the safety of people in the room.

[0026] The sound-absorbing panel 1 of this embodiment is rectangular and has lengths in the vertical and horizontal directions. With reference to Fig. 3(a), the sound-absorbing panel 1 includes a frame material 4 surrounding a sound-absorbing material 3, a fabric material 5 that covers the sound-absorbing material 3 and the frame material 4 from the front side and is attached so that an edge portion 50 of the fabric material 5 wraps around a rear surface 40 of the frame material 4, and a backing plate 6 that has a thickness dimension equal to or greater than that of the fabric material 5 and is attached to the rear surface 40 of the frame material 4.

[0027] The frame material 4 in this embodiment is a rectangular plate material, and can be formed so as to surround the sound-absorbing material 3. However, in order to maintain sound-absorbing performance, at least the front surface (surface that absorbs indoor sound) 12 is not covered with the plate material. In other words, the frame material 4 can have a frame shape that allows the sound-absorbing panel 1 to have a desired shape while maintaining the sound-absorbing performance of the front surface. The frame material 4 in this embodiment is formed so as to cover the back surface 40, the side surfaces 41, the top surface, and the bottom surface (not shown in FIG. 3; these correspond to the frame material supporting the bottom surface 13 and the top surface 14 of the sound-absorbing panel 1 in FIG. 1).

[0028] 3(c) shows a modified example of the frame material 4, characterized in that the frame material 4B housing the sound-absorbing material 3 is columnar. This allows sound to be absorbed from surfaces other than the front surface 12B of the sound-absorbing panel 1B, i.e., the bottom surface, top surface, and side surface 15B, improving the sound-absorbing performance.

[0029] The cloth material 5 covers the sound-absorbing material 3 and the frame material 4 from the front side, and is attached so that its edge portion 50 wraps around the rear surface 40 of the frame material 4. The cloth material 5 can be selected from various cloth materials such as a resin-based cloth material, a glass-based cloth material, a cotton-based cloth material, and a felt material.

[0030] The backing plate 6 is a plate material having a thickness equal to or greater than that of the fabric material 5. Since the fabric material 5 in this embodiment is provided so as to wrap around the back surface of the frame material 4, a gap is generated between the back surface 40 of the frame material 4 and the wall surface W. If a gap is present, the fixing effect of the fixing means 7 described below is weakened, and there is a risk that the sound-absorbing panel 1 will separate from the wall surface W. To prevent this, the sound-absorbing panel 1 in this embodiment is provided with the backing plate 6 on the back surface 11, thereby improving the workability (adhesion) of the sound-absorbing panel 1. The material of the backing plate 6 is not particularly limited, and may be made of wood, resin, metal, or the like, for example.

[0031] Also, referring again to FIG. 1, it is preferable that the sound-absorbing panel 1 is previously attached with a fixing means 7 that can be fixed to a wall surface W in an upper region of the back surface 11. The upper region referred to here is a region located above the center height in the vertical direction of the sound-absorbing panel 1, and more preferably, a region located in the upper 1 / 3 of the height dimension H3 of the main body part 10. More preferably, it is a region located in the upper 1 / 5 of the height dimension H3 of the main body part 10. In other words, it is preferable that the fixing means 7 is provided in a position as high as possible. The fixing means 7 is, for example, a push pin or double-sided tape. The sound-absorbing panel 1 of this embodiment has a structure that leans against the wall surface W, so that it can be fixed with a weak fixing force and can be fixed without damaging the wall surface W of the room. Note that "damage to the wall surface" referred to here means damage to the wall surface that can be caused by driving in a screw or using a glue gun, and is damage to the wall surface that requires repair work when removing the sound-absorbing panel.

[0032] The legs 2 are provided so that the sound-absorbing panel 1 cannot stand on its own, but can lean against a wall surface W. The legs 2 in this embodiment are provided only in an area L2 of the bottom surface 13 that is located on the front side of a thickness center line C that crosses the center of the thickness, and include a first leg 21 and a second leg 22 located away from the first leg 21.

[0033] 1(b), when a baseboard 94 is provided at the lower end of the wall W of the room 9 (see FIG. 1), it is desirable that the height dimension H2 of the leg 2 is equal to or greater than the height dimension H4 of the baseboard 94. This makes it possible to install the sound-absorbing panel 1 comfortably in the upper area of ​​the baseboard 94 while preventing the sound-absorbing panel 1 from being installed in an unnecessary area.

[0034] The legs 2 can have various shapes, for example, a prismatic shape, a cylindrical shape, a spherical shape, a pyramidal shape, etc. In the present embodiment, the legs 2 are in the shape of a rectangular prism, but when the diameter of the legs 2 is large (30 mm or more) and stable, it is preferable to form the tip 23 of the legs 2 in an inclined shape in order to make it difficult for the sound-absorbing panel 1 to stand on its own.

[0035] <Regarding modified leg parts> Next, modified examples of the first leg 21 and the second leg 22 will be described with reference to Fig. 4. Fig. 4 is a schematic diagram showing the legs of a sound-absorbing panel according to an embodiment of the present invention, where (a) is modified example 1 of the leg, and (b) is modified example 2 of the leg.

[0036] 4(a) is characterized in that the first leg 21A and the second leg 22A include cuttable portions 20 at predetermined height positions 20a, 20b, and 20c, respectively. The cuttable portions 20 may be cutout portions as shown in the figure provided in the leg 2A, or may have guide lines printed thereon that allow the worker to easily confirm the cutting position. The first and second leg portions 21A and 22A of this embodiment allow the height of the sound-absorbing panel 1 to be easily adjusted by simply cutting the leg 2A.

[0037] It is preferable that the shape of the leg bottom surface 23A of the cuttable portion 20 after cutting is such that it can come into point contact with the floor 92. This allows the sound-absorbing panel 1 to be reliably leaned against the wall surface W of the side wall 91.

[0038] FIG. 4(b) is characterized in that the first leg 21B and the second leg 22B each have a tip 23B shaped to make point contact with the floor 92. The tip 23B of the first and second legs 21B and 22B is spherical. This allows the sound-absorbing panel 1 to be installed without rattling even if the floor 92 is slightly uneven. The sound-absorbing panel 1 is provided with the first leg 21B and the second leg 22B located away from the first leg 21B only in an area of ​​the bottom surface 13 that is located closer to the front surface 12 than the thickness center line C that crosses the center of the thickness. This makes it difficult for the sound-absorbing panel 1 to stand on its own, and allows the back surface 11 to easily lean against the wall surface W.

[0039] In this embodiment, two legs 21, 22 are provided on one side of the bottom surface of the sound-absorbing panel 1, but as long as the sound-absorbing panel 1 can be leaned against a wall surface W, three or more legs may be provided.

[0040] <About the effects> Next, the effect of the sound-absorbing panel 1 according to the present embodiment will be described with reference to Fig. 2. Fig. 2 is an explanatory diagram of the sound-absorbing panel 1 according to the embodiment of the present invention. In the figure, the sound-absorbing panel 200 is a known free-standing sound-absorbing panel 200.

[0041] In Fig. 2, a person in room 9 is playing a musical instrument (piano) 95 while seated in a chair. In this case, the height H1 of the player's ears from the floor 92 is approximately 1000 mm. Therefore, in order to obtain the highest sound absorption effect, it is preferable that the sound-absorbing panel 1 is provided so as to encompass this height H1. The main body 10 of the sound-absorbing panel 1 can employ sound-absorbing panels of various sizes, from small ones with a height dimension H3 of 300 mm and a weight of approximately 1000 g, to large ones with a height dimension H3 of 2500 mm and a weight of approximately 5000 g.

[0042] Furthermore, the height dimension H2 of the leg 2 of the sound-absorbing panel 1 can be appropriately adjusted so that the sound-absorbing panel encompasses the height position H1 depending on the size of the sound-absorbing panel 1. Therefore, when the height dimension H3 of the sound-absorbing panel 1 is small, such as 300 mm, the height dimension H2 of the leg 2 may be 800 mm or more, and when the height dimension H3 is large, such as 2500 mm, it may be 500 mm or less. This allows the sound-absorbing panel 1 to be reliably positioned in the area where sound absorption is desired.

[0043] In addition, because most of the weight of the sound-absorbing panel 1 according to this embodiment is supported by the legs 2, even a large sound-absorbing panel can be easily installed by simply providing fixing means 7 with light adhesive strength, such as push pins or double-sided tape, on the wall surface W. This makes it suitable for use in rooms where the wall surface W cannot be damaged, such as rooms in rental housing.

[0044] In general, when a musical instrument 95 is played in a room 9, the sound pressure emitted from the musical instrument 95 reaches a maximum value (Smax) on the wall surfaces W of the walls 91 to 93 of the room. Since the conventional free-standing sound-absorbing panel 200 cannot be placed in close contact with the wall surface 91, it may end up being placed at a position where the sound pressure reaches a minimum value (Smin), making it difficult to obtain a high sound-absorbing effect. This is because the maximum value (Smax) and the minimum value (Smin) of the sound pressure are alternately repeated at intervals of length L3, making it difficult to find the position where the maximum value (Smax) is reached. In contrast, the sound-absorbing panel 1 according to this embodiment is always placed at a position where the sound pressure reaches a maximum value (Smax), making it easy to obtain a high sound-absorbing effect.

[0045] Further, referring to FIG. 8, another effect of the sound-absorbing panel 1 according to the present embodiment will be described. The sound-absorbing panel 100 shown in FIG. 8 is a large panel, and is installed by fitting the back surface 111 of the sound-absorbing panel 100 and the members provided on the wall surface W together. However, when fitting in this manner, it is necessary to provide the fitting member 120 on the back surface 111 of the sound-absorbing panel 100, and therefore a thickness L4 larger than the thickness L5 of the sound-absorbing panel that can obtain the desired sound-absorbing effect is required. In contrast, the sound-absorbing panel 1 according to the present embodiment only requires the thickness L1 of the sound-absorbing panel, even if it is a large panel. Therefore, the sound-absorbing panel 1 according to the present embodiment can reduce the sense of oppression caused by installation, even if it is a large panel.

[0046] Regarding the second embodiment A sound-absorbing panel 1C according to embodiment 2 will be described with reference to Fig. 5. Fig. 5 is a schematic diagram of a sound-absorbing panel according to embodiment 2 of the present invention, where (a) is a front perspective view and (b) is a plan view.

[0047] The sound-absorbing panel 1C is characterized in that at least the back surface 11C has a corrugated shape. As shown in Fig. 5(b), the surface of the sound-absorbing panel 1C that comes into contact with the wall surface W has an uneven shape. In this case, in a conventional sound-absorbing panel that is attached to a wall surface with screws, double-sided tape, or the like, the contact area with the wall surface W is small, making it difficult to fix the panel. However, according to the sound-absorbing panel 1C of this embodiment, the panel is installed so as to lean against the wall surface W, so that the panel can be fixed with sufficient strength even if the contact area between the wall surface W and the back surface 11C of the sound-absorbing panel 1C is small.

[0048] Regarding the Third Embodiment A sound-absorbing panel 1D according to a third embodiment will be described with reference to Fig. 6. Fig. 6 is a schematic diagram of the sound-absorbing panel 1D according to the third embodiment, where (a) is a perspective view from the front and (b) is a plan view. The sound-absorbing panel 1D according to the third embodiment has a cross-sectional shape that is substantially a right-angled triangle, but can have various triangular shapes depending on the shape of the corners of a room.

[0049] The sound-absorbing panel 1D according to the third embodiment includes two side surfaces 15D arranged in close contact with a corner wall surface W of a room 9, a front surface 12D connecting the front ends of the side surfaces 15D, and a bottom surface 13D, and has a sound-absorbing material (not shown) inside. The sound-absorbing panel 1D is arranged such that a one-third area A of the bottom surface 13D located on the front surface 12D side when a perpendicular line extending from an intersection of the two side surfaces 15D to the front surface 12D is divided into thirds. D Only the first leg 21D and the second leg 22D located away from the first leg 21D are provided.

[0050] Referring to FIG. 6(b), the leg 2D of the sound-absorbing panel 1D according to the third embodiment is disposed in the leg arrangement area A. D Placed in leg placement area A D is the area located on the front side of the center of gravity of the triangle. Specifically, in the case of a right-angled triangle, a perpendicular line is drawn from the vertex that forms the right angle to the base, and then a line is drawn perpendicular to the center of gravity at the position that divides the perpendicular line in a 1:2 ratio (center of gravity). Of the two areas formed, this is the area that extends toward the base. Leg placement area A D By arranging the legs 2D within the space defined by the wall W, the sound-absorbing panel 1D cannot stand on its own, and can easily lean against the wall W. The first leg 21D and the second leg 22D are typically arranged in the area indicated by the dashed lines in the figure.

[0051] The frame material of the sound-absorbing panel 1D according to the third embodiment is preferably provided so as to form at least two side surfaces 15D and not to cover the front surface 12D. This allows the panel to be easily placed close to the corners of the room 9. Sound tends to be reflected and muffled in the corners of a room. Therefore, the sound-absorbing panel 1D can further improve the soundproofing effect of the room by absorbing sound from the corners of the room.

[0052] Although the sound absorbing panel 1D according to the present embodiment has been described as having a right-angled triangular shape, the present invention is not limited to this and may have any triangular shape, such as an equilateral triangle or an isosceles triangle. Dis defined and leg 2D is positioned.

[0053] Regarding the Fourth Embodiment A sound-absorbing panel 1E according to embodiment 4 will be described with reference to Fig. 7. Fig. 7 is a schematic diagram of the sound-absorbing panel 1E according to embodiment 4, where (a) is a perspective view from the front, and (b) is a plan view.

[0054] The sound-absorbing panel 1E according to the fourth embodiment has an upper surface 14E and a bottom surface 13E, has a circular cross-sectional shape, and has a sound-absorbing material inside. The sound-absorbing panel 1E has two regions on the bottom surface 13E that are bisected by the center line X of the circle, and one region A E Only the first leg 21E has a first leg 21E and a second leg 22E located away from the first leg 21E.

[0055] Leg placement area A E may be one of two regions bisected by a center line X of an arbitrarily provided circle. When the sound-absorbing panel 1E is installed, it is preferable that the sound-absorbing panel 1E is arranged so that the first leg 21E and the second leg 22E are located on the indoor side. The sound-absorbing panel 1E according to the fourth embodiment has a front surface and a back surface determined after installation in a room, and the surface facing the indoor direction can be the front surface 12E, and the surface facing the wall direction can be the back surface 11E. The sound-absorbing panel 1E can be suitably used in the corners of a room, but can be installed in any location in the room depending on the design and sound-absorbing performance of the room.

[0056] The frame material of the sound-absorbing panel 1E is a columnar frame material that is appropriately formed into a circular shape. In order to maintain sound-absorbing performance, it is preferable that the side surface of the sound-absorbing panel 1E is not covered by the frame material.

[0057] Although the sound-absorbing panel 1E according to the present embodiment has been described with reference to a circular shape, the shape is not limited thereto, and may be, for example, an elliptical shape. E is determined and leg 2E is positioned.

[0058] It should be noted that the multiple embodiments and modified examples disclosed herein can be applied in combination with each other as necessary.

[0059] The embodiments disclosed herein should be considered to be illustrative and not restrictive in all respects. The scope of the present invention is defined by the claims, not the above description, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0060] 1,100 sound absorbing panel, 2 legs, 3 sound absorbing material, 4 frame, 5 fabric, 6 backing board, 7 fixing means, 9 room, 11 back surface, 12 front surface, 13 bottom surface, 14 top surface, 15 side surface, 21 first legs, 22 second legs, 23 tip portion, 50 edge portion (of fabric material), 91 side wall, 92 floor, 93 ceiling, 94 baseboard, W wall surface, R corner portion of fabric material, C thickness center line (of sound absorbing panel), X center line (of circle).

Claims

1. A sound-absorbing panel having a back surface that is placed in close contact with a wall surface of a room, a front surface that is located at a distance of a thickness from the back surface, and a bottom surface, and having a sound-absorbing material therein, The sound-absorbing panel has a first leg portion and a second leg portion located away from the first leg portion only in an area of ​​the bottom surface that is located toward the front side of a thickness center line that crosses the center of the thickness.

2. The acoustic panel of claim 1 , wherein the first leg portion and the second leg portion each include a cuttable portion at a predetermined height.

3. The sound-absorbing panel according to claim 1 , wherein the first leg portion and the second leg portion each have a tip portion shaped to come into point contact with a floor surface.

4. The sound-absorbing panel is a frame material surrounding the sound absorbing material with the sound absorbing material protruding from a front surface thereof; a cloth material that covers the sound absorbing material and the frame material from the front side and has an edge that is attached so as to wrap around the back side of the frame material; The sound-absorbing panel according to claim 1 , further comprising a backing plate attached to the rear surface of the frame material and having a thickness dimension equal to or greater than that of the fabric material.

5. The sound-absorbing panel according to claim 1 , wherein the sound-absorbing panel is provided with a fastening means pre-attached to an upper region of the back surface, the fastening means being capable of being fastened to the wall surface.

6. A sound-absorbing panel having two side surfaces arranged in close contact with a corner wall surface of a room, a front surface connecting the front ends of the side surfaces, and a bottom surface, the sound-absorbing panel having a sound-absorbing material therein, The sound-absorbing panel has a first leg and a second leg located away from the first leg only within one-third of the bottom surface, which is located on the front surface side when a perpendicular line extending from the intersection of the two side surfaces to the front surface is divided into three equal parts.

7. A sound-absorbing panel having a top surface and a bottom surface, a cross-sectional shape being circular, and having a sound-absorbing material therein, The sound-absorbing panel has a first leg and a second leg located away from the first leg only in one of two regions of the bottom surface that are bisected by a center line of a circle.

8. The walls of the room and a sound-absorbing panel having a front surface, a back surface, and a bottom surface, the sound-absorbing panel having an internal sound-absorbing material, the back surface of the sound-absorbing panel being disposed in close contact with a wall surface; The sound-absorbing panel includes a first leg portion and a second leg portion located away from the first leg portion only in an area of ​​the bottom surface that is located on the front side of a thickness center line that crosses the center of the thickness, and A sound-absorbing panel installation structure comprising a fixing means for connecting and fixing the sound-absorbing panel to the wall surface in a state in which the sound-absorbing panel supported from below by the first leg and the second leg is leaning against the wall surface.

9. A baseboard is provided at the lower end of the wall of the room, 9. The sound-absorbing panel installation structure according to claim 8, wherein the first leg portion and the second leg portion have a height dimension equal to or greater than the height of the baseboard.

Images