Acoustic panel

Abstract

We provide an acoustic panel with a simple structure that requires no power supply and allows for fine adjustment of the sound environment. [Solution] Multiple plate members 12 are arranged in parallel, and each plate member 12 is rotatable around the axis of a rotation axis that intersects the direction of parallel arrangement. When the width direction of a pair of opposing plate surfaces 14, 16 of the plate members 12 intersects the direction of arrangement A of the plate members 12, a gap 38 is created between adjacent plate members 12. When the width direction B is close to and along the direction of arrangement A, the plate members 12 are in contact with each other and closed. The angle of the width direction B of each of the multiple plate members 12 can be set independently and each can be locked at any angle. The acoustic effect can be adjusted by selecting between an open state and a closed state by changing the angle of the width direction B.

Description

Technical Field

[0001] This invention relates to an acoustic panel used in a living room, a hall, etc.

Background Art

[0002] Conventionally, there is an acoustic panel installed in a living room, a hall, etc. to adjust the acoustic environment such as music. Various such acoustic panels have been disclosed. For example, the reverberation adjustment device disclosed in Patent Document 1 has a plurality of columnar members each supported rotatably in the circumferential direction and arranged in parallel. On the outer peripheral surface of the columnar member, a sound wave absorption control plate is stretched, and the sound wave absorption control plate includes an electrically sensitive type absorption control fluid composition containing individual particles having an electric field alignment effect in an electrically insulating medium, and a pair of electrode plates facing each other with a gap therebetween and accommodating the electrically sensitive type absorption control fluid composition in the gap. Further, it includes voltage application adjustment means for applying a voltage between the pair of electrodes and adjusting the voltage.

[0003] Also, the acoustic diffusion panel device disclosed in Patent Document 2 includes two-leg support legs erected at regular intervals and two acoustic panels supported by each support leg. The two acoustic panels are connected rotatably in the horizontal direction and supported by the support legs via a slide mechanism that slides in the horizontal direction and a rotation mechanism that rotates. The acoustic panel consists of a back plate made of an insulation board and a front decorative plate provided spaced apart in front of the back surface. The front decorative plate is composed of a plurality of front plates arranged side by side at regular intervals in the lateral direction, and the gap between the front plates becomes a communication portion communicating with the inside of the acoustic panel. Inside the acoustic panel, a sound adjustment plate made of an insulation board is provided.

[0004] Furthermore, the acoustic adjustment device and acoustic adjustment unit disclosed in Patent Document 3 include an acoustic absorbing and diffusing panel in which multiple sound-absorbing and diffusing bodies, each formed from a foldable paper core material into an unfolded cylindrical shape, are arranged in parallel within a rectangular frame, and an acoustic absorbing and reflective panel in which multiple types of sound-absorbing and reflective plates with different ratios of sound absorption and reflectivity are fitted into a rectangular frame. The acoustic adjustment unit is obtained by detachably overlapping the acoustic absorbing and diffusing panel and the acoustic absorbing and reflective panel. The resulting acoustic adjustment units are combined to form an acoustic adjustment device. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 8-160968 [Patent Document 2] Japanese Patent Publication No. 2006-300995 [Patent Document 3] Japanese Patent Publication No. 2013-222191 [Overview of the project] [Problems that the invention aims to solve]

[0006] In the case of the background technologies described above, Patent Document 1 has a complex structure, is costly, and requires a power supply. In the case of Patent Document 2, it is difficult to finely adjust the acoustic effect. In the case of Patent Document 3, the structure of the paper folding core material is complex, difficult to manufacture, and costly.

[0007] This invention was made in view of the problems of the background technology described above, and aims to provide an acoustic panel with a simple structure that does not require a power supply and can finely adjust the sound environment. [Means for solving the problem]

[0008] This invention relates to an acoustic panel in which a plurality of plate members are arranged in parallel, each plate member being rotatable around an axis of rotation that intersects the parallel arrangement direction, and when the width direction of a pair of opposing plate surfaces of the plate members, which is perpendicular to the axial direction of the rotation axis, intersects the arrangement direction of the plate members, a gap is created between adjacent plate members, and when the width direction is close to and along the arrangement direction, the plate members are in contact with adjacent plate members and closed, the angle in the width direction of the plurality of plate members can be set independently for each, and each can be locked at any angle, and the acoustic effect can be adjusted by selecting the open state and the closed state by the angle in the width direction.

[0009] The plate member is a rectangular plate that is elongated in the axial direction of the rotation axis, and is provided with a pair of rectangular plate surfaces that are elongated in the axial direction, and side edges on both sides that are along the longitudinal direction of the pair of plate surfaces, the width direction is the direction of the distance between the pair of side edges, the length of the plate member in the width direction is longer than the distance between the multiple plate members in the direction of alignment, and when the width direction of the plate members is close to the direction of alignment, the portion of the plate surface that is continuous with the side edges and the portion adjacent to the side surface of the adjacent plate member overlap each other, forming a closed state.

[0010] The thickness between the pair of plates is such that the central part of the plate is thicker, and the side surfaces away from the center of the plate are thinner. When the width direction of the plate members is close to the direction of alignment, the thin portions continuous with the side edges of the plate surfaces overlap each other, resulting in a closed state.

[0011] A base is provided on the floor, and a frame is attached to the base. The plate member is installed in the inner space of the frame. A pair of horizontal frame members are provided on the frame member, spaced apart vertically. Smaller shaft members are attached to the upper and lower ends of the plate member, and the plate member is installed between the pair of horizontal frame members via the pair of shaft members. An imaginary line connecting the pair of shaft members forms the axis of rotation, and the axis of rotation is provided in the vertical direction, while the alignment direction and the width direction are horizontal.

[0012] The angle of the plate member around its axis can be manually adjusted. The plate member is made of wood. [Effects of the Invention]

[0013] The acoustic panel of this invention has a simple structure, requires no power supply, and allows for fine adjustment of the sound environment. The sound environment can be freely set by simply manually rotating the plate members around their axes, allowing for the suppression or adjustment of reverberation and resonance. The angles around the axes of multiple plate members do not have to be the same; they can be unequal, making fine adjustments easy. [Brief explanation of the drawing]

[0014] [Figure 1] This is a perspective view showing the open state of an acoustic panel in one embodiment of this invention. [Figure 2] This is a perspective view of the acoustic panel in this embodiment in the closed state. [Figure 3] These are a plan view (a), a front view (b), and a right side view (c) showing the acoustic panel of this embodiment in the open state. [Figure 4] These are a plan view (a), a front view (b), and a right side view (c) showing the acoustic panel of this embodiment in a closed state. [Figure 5] (a) is a plan view showing the acoustic panel of this embodiment in the open state, and (b) is a plan view showing it in the closed state. [Modes for carrying out the invention]

[0015] The embodiments of this invention will now be described based on the drawings. Figures 1 to 5 show one embodiment of this invention. In this embodiment, the acoustic panel 10 has a plurality of identical plate members 12 arranged in parallel. Each of the plurality of plate members 12 is rotatable around an axis of rotation perpendicular to the direction A of arrangement. The angle of each of the plurality of plate members 12 around the axis can be set independently, and each can be locked at any angle by friction or the like.

[0016] The plate member 12 is made of, for example, wood, and the type of wood can be freely selected. The plate member 12 is a rectangular plate body that is long in the axial direction of the rotation axis, and includes a pair of plate surfaces 14 and 16 that are long in the axial direction, which is the long side direction, a pair of side surfaces 18 on both sides along the longitudinal direction of the pair of plate surfaces 14 and 16, and a pair of end surfaces 20 that are continuous with both ends on both sides intersecting the longitudinal direction of the pair of plate surfaces 14 and 16. The direction between the side surfaces 18, which are a pair of side edge portions of the plate member 12, and perpendicular to the axial direction of the rotation axis is defined as the width direction B. The plate member 12 has a cross-sectional shape along the longitudinal direction that is constant along the longitudinal direction. The thickness between the plate surfaces 14 and 16 is a rhombic hexagon that is thick at the central portion of the plate surfaces 14 and 16 and short and thin on the side surface 18 side away from the center of the plate surfaces 14 and 16. The end surface 20 is a plane positioned substantially perpendicular to the longitudinal direction and has the same rhombic hexagon shape as the cross-sectional shape.

[0017] The acoustic panel 10 is provided with a pedestal 34 installed on the floor and a frame body 22 attached to the pedestal 34. A plurality of plate members 12 are provided in the inner space of the frame body 22. The frame body 22 is provided with horizontal cross-frame members 24, 26, and 28 arranged vertically at equal intervals in order from above. Both ends of the cross-frame members 24, 26, and 28 are connected to and supported by vertical frame members 30 and 32. Pedestals 34 are respectively attached to the lower ends of the vertical frame members 30 and 32. The acoustic panel 10 can stand independently on the floor by the pedestal 34. The frame body 22 and the pedestal 34 are made of, for example, aluminum.

[0018] A plurality of, here nine, plate members 12 are attached to the rectangular inner space located in the upper part surrounded by the cross-frame members 24, 26 and the vertical frame members 30, 32. The longitudinal directions of the plate members 12 are perpendicular to each other, and a pair of end surfaces 20 are positioned vertically. Shaft members 36 smaller than the plate members 12 are respectively attached to the centers of each end surface 20. The upper shaft member 36 is attached to the lower surface of the cross-frame member 24, and the lower shaft member 36 is attached to the upper surface of the cross-frame member 26. The plate members 12 are attached between the cross-frame members 24 and 26. The virtual line connecting the pair of upper and lower shaft members 36 serves as the rotation axis of the plate member 12. As a result, the rotation axis becomes vertical, the arrangement direction A and the width direction B become horizontal, and the width direction B of the plate member 12 rotates around the axis.

[0019] Nine plate members 12 are attached to the rectangular internal space surrounded by the horizontal frame members 26 and 28 and the vertical frame members 30 and 32 and located in the lower part, similarly to the upper part. The longitudinal directions of the plate members 12 are perpendicular to each other, a pair of end faces 20 are located vertically, and shaft members 36 smaller than the plate members 12 are attached to the centers of the respective end faces 20. The upper shaft member 36 is attached to the lower surface of the horizontal frame member 26, the lower shaft member 36 is attached to the upper surface of the horizontal frame member 28, and the plate members 12 are attached between the horizontal frame members 26 and 28. A virtual line connecting the upper and lower pair of shaft members 36 serves as the rotation axis of the plate member 12. As a result, the rotation axis becomes vertical, the arrangement direction A and the width direction B are horizontal, and the width direction B of the plate member 12 rotates around the axis.

[0020] The nine plate members 12 in the upper part and the plate members 12 in the lower part are arranged vertically, and the rotation axes are coaxially attached to each other. Through holes for rotatably inserting the shaft members 36 are provided in the upper and lower surfaces of the horizontal frame member 26 between the upper and lower parts. One shaft member 36 may be attached, the upper plate member 12 in the upper part may be attached, and the lower plate member 12 in the lower part may be attached. The angle of the shaft member 36 around the axis in the width direction B can be manually changed. The angles of the width directions B of the plurality of plate members 12 can be set independently of each other, and each can be locked at an arbitrary angle by frictional force or the like.

[0021] The acoustic panel 10 adjusts the acoustic effect by rotating the width direction B of the plate member 12 around the axis. First, as shown in FIGS. 1, 3, and 5(a), when the width direction B of the plate member 12 intersects the arrangement direction A, for example, when it intersects at 90°, it is in an open state separated from the adjacent plate member 12. A gap 38 through which sound passes is formed between the pair of plate members 12.

[0022] Furthermore, as shown in Figures 2, 4, and 5(b), when the width B of the plate members 12 are close together along the alignment direction A, adjacent plate members 12 come into contact with each other and close. The portion continuous with the side surface 18 of the side edge of the plate surface 14 and the portion continuous with the side surface 18 of the side edge of the plate surface 16 of the adjacent plate member 12 overlap each other, and the angle of the width B with respect to the alignment direction A becomes the minimum of 7°. At this time, no gap 38 is formed and sound is reflected. Because the cross-sectional shape of the plate members 12 intersecting the longitudinal direction is a thin rhombic hexagon, the portion continuous with the side edge of the plate surface 14 and the portion continuous with the side edge of the plate surface 16 of the adjacent plate member 12 have a large area T and come into contact with each other, resulting in a high sound insulation effect. The thin parts overlap each other, so the thickness does not increase, and the appearance in the closed state is simple.

[0023] The angle of the plate member 12 around its axis can be freely set to angles other than 90° and 7° as in the example above, and each can be independently locked at any angle by friction or the like.

[0024] Next, the method of using the acoustic panel 10 of this embodiment will be described. In a living room, hall, etc., place the base 34 on the floor and set up the acoustic panel 10 to stand on its own in the necessary location, such as near an instrument or against a wall. Multiple acoustic panels 10 may be set up as needed. The width direction B of the plate member 12 is manually rotated around the axis with respect to the direction A in which the plate members 12 are arranged to the desired orientation. When you want to reflect sound, set it to a closed state. When you want to let sound through or suppress reverberation, set it to an open state to form an air gap 38. The state of reverberation can also be adjusted by adjusting the size of the air gap 38. The width direction B of the plate member 12 may be oriented to intersect with the direction in which sound is reflected. The angles of each plate member 12 around the axis may be set to different angles within a single acoustic panel 10. It is also possible to finely adjust the sound environment by creating differences between the left and right sides of the acoustic panel 10, or between the upper and lower rows.

[0025] According to this embodiment of the acoustic panel 10, it has a simple structure, requires no power supply, and allows for fine adjustment of the sound environment. It is easy to manufacture, inexpensive, and easy to maintain. It is possible to create and adjust the optimal sound environment in various rooms, halls, etc. It is installed on the floor using a base 34, making it portable and easy to use. By manually rotating the width direction B of the plate members 12 around an axis with respect to the direction A in which the plate members 12 are arranged, the acoustic effect can be adjusted by selecting between an open state and a closed state of the plate members 12. In the open state, the size of the gap 38 can be adjusted to suppress reflections and resonances, allowing for free setting of the sound environment. The angles around the axis of each plate member 12 do not have to be the same and can be unequal. By mixing different angles within a single acoustic panel 10, it is possible to create differences between the left and right sides of the acoustic panel 10, or between the upper and lower sections, allowing for fine adjustment of the sound environment. The frame 22 is made of aluminum, making it lightweight and highly durable. The board component 12 is made of wood, which is easy to obtain and process, and also has a good texture. The sound environment can also be adjusted depending on the type of wood used.

[0026] It should be noted that the acoustic panel of this invention is not limited to the above embodiment, and materials, shapes, etc., can be freely selected. The material of the plate member does not have to be wood; using aluminum or resin materials, etc., will allow for a wider range of adjustments. In addition to the two-tiered configuration shown in the above embodiment, it may also have only one tier, or three or more tiers. The shape of the frame does not have to be rectangular. The axis direction of the rotation axis does not have to be vertical. Furthermore, it does not have to be a self-supporting structure on the floor with a base; it may be installed by leaning it against something or suspending it. [Explanation of Symbols]

[0027] 10 Acoustic Panels 12 Plate members 14,16 plate surface 18 Side view 20 End face 22 Frame 24, 26, 28 Horizontal frame members 34 Pedestal 36 Shaft member

Claims

1. Multiple plate members are arranged in parallel, and each plate member is rotatable around an axis of rotation perpendicular to the direction of parallel arrangement. When the width direction of a pair of opposing plate surfaces of the plate members, which is perpendicular to the axial direction of the rotation axis, intersects the alignment direction of the plate members, adjacent plate members are separated and a gap is created between them; when the width direction is close to the alignment direction, adjacent plate members are in contact and closed together. An acoustic panel characterized in that the angles in the width direction of each of the multiple plate members can be set independently, each can be locked at any angle, and the acoustic effect can be adjusted by selecting the open state and the closed state by the angle in the width direction.

2. The plate member is a rectangular plate body that is elongated in the axial direction of the rotation axis, and is provided with a pair of rectangular plate surfaces that are elongated in the axial direction, and side edges on both sides that are along the longitudinal direction of the pair of plate surfaces, and the width direction is the direction of the distance between the pair of side edges. The acoustic panel according to claim 1, wherein the length of the plate member in the width direction is longer than the distance between the rotation axes of the plurality of plate members, and when the width directions of the plate members are close to the alignment direction, the portion continuous with the side edge of the plate surface and the portion continuous with the side edge of the adjacent plate member overlap each other, forming a closed state.

3. The acoustic panel according to claim 2, wherein the thickness between the pair of plate surfaces is such that the central portion of the plate surface is thicker, the side surface away from the center of the plate surface is thinner, and when the width direction of the plate members is close to the alignment direction, the thin portions continuous with the side edges of the plate surfaces overlap each other, resulting in a closed state.

4. The acoustic panel according to claim 2, comprising a base installed on the floor and a frame attached to the base, wherein the plate member is installed in the inner space of the frame.

5. The frame member is provided with a pair of horizontal frame members spaced apart vertically. The acoustic panel according to claim 4, wherein the plate member has shaft members smaller than the plate member attached to its upper and lower ends, and is mounted between a pair of horizontal frame members via a pair of shaft members, and the imaginary line connecting the pair of shaft members becomes the axis of rotation, the axis of rotation is provided in the vertical direction, and the alignment direction and the width direction are horizontal.

6. The acoustic panel according to claim 2, wherein the angle of the plate member around its axis can be manually changed.

7. The acoustic panel according to claim 1 or 2, wherein the aforementioned plate member is made of wood.

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