Sound-insulating structure

Abstract

To provide a sound-insulating structure that is easy to install and has excellent sound-insulating properties. [Solution] The sound-insulating structure includes an expandable member having a configuration in which a plurality of cylindrical bodies, each having a cavity in a direction perpendicular to a plane, are densely arranged in each of a first direction of a plane and a second direction intersecting the first direction, and the cylindrical bodies are expandable and contractible by deformation, and a fixing part connected to the expandable member for fixing the expanded and contracted state of the expandable member. The sound-insulating structure also includes an expandable member having a configuration in which a plurality of through holes, each having a through hole penetrating in a direction perpendicular to a plane, are densely arranged in each of a first direction of a plane and a second direction intersecting the first direction, and the through holes are expandable and contractible by deformation, and a fixing part connected to the expandable member for fixing the expanded and contracted state of the expandable member.

Description

Technical Field

[0001] One embodiment of the present invention relates to a sound insulation structure that can be attached to a window of a building or the like and block the propagation of sound waves. Another embodiment of the present invention also relates to a sound insulation structure that can be installed in a corridor or a room of a building and block the propagation of sound waves.

Background Art

[0002] A blind can not only block the light incident from the window of a building (light shielding property), but also block the line of sight from the outside (privacy protection property). Patent Document 1 discloses a blind-incorporated double glazing in which a blind is provided in the space between two glass plates, and a blind having heat insulation properties is disclosed.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the conventional blind has a problem that its sound insulation property for blocking the propagation of sound waves is low. Even in the blind-incorporated double glazing described in Patent Document 1, if the glass plate is thickened, the sound insulation property is improved, but if the glass plate is thickened, the cost increases and the weight increases, so there is a problem that transportation and installation become difficult. This problem is the same not only for blinds but also for partitions.

[0005] One object of an embodiment of the present invention is to provide a sound insulation structure that is easy to install and has excellent sound insulation properties in view of the above problems.

Means for Solving the Problems

[0006] A sound-insulating structure according to one embodiment of the present invention includes a telescopic member having a plurality of cylindrical bodies, each having a cavity in a direction perpendicular to a plane, densely arranged in a first direction of a plane and a second direction intersecting the first direction, and being expandable and contractible by deformation of the cylindrical bodies, and a fixing part connected to the telescopic member for fixing the expanded and contracted state of the telescopic member.

[0007] Furthermore, a sound-insulating structure according to one embodiment of the present invention includes an expandable member having multiple through-holes, which penetrate in a direction perpendicular to a plane, arranged in close proximity in a first direction of the plane and a second direction intersecting the first direction, and which is expandable and contractible by deformation of the through-holes, and a fixing part connected to the expandable member for fixing the expanded and contracted state of the expandable member.

[0008] Furthermore, a sound-insulating structure according to one embodiment of the present invention includes a transparent plate-like member, a plurality of cylindrical bodies having cavities in a direction perpendicular to the surface of the transparent plate-like member arranged in close proximity on the transparent plate-like member, and an expandable member having a configuration that allows expansion and contraction by deformation of the cylindrical bodies, and a fixing part connected to the transparent plate-like member and the expandable member, which fixes the expansion and contraction length of the expandable member and fixes the expanded and contracted expandable member on the transparent plate-like member.

[0009] Furthermore, the sound-insulating structure according to one embodiment of the present invention includes a transparent plate-like member, an expandable member having a plurality of through holes arranged densely on the transparent plate-like member in a direction perpendicular to the surface of the transparent plate-like member, and being expandable and contractible by deformation of the through holes, and a fixing part connected to the transparent plate-like member and the expandable member, which fixes the expanded and contracted length of the expandable member and fixes the expanded and contracted expandable member on the transparent plate-like member.

[0010] Furthermore, a sound-insulating structure according to one embodiment of the present invention includes a pair of transparent plate-like members, a plurality of cylindrical bodies having cavities in a direction perpendicular to the surface of the pair of transparent plate-like members arranged densely between the pair of transparent plate-like members, and an expandable / expandable member having a configuration that allows expansion and contraction by deformation of the cylindrical bodies, and a fixing part connected to the pair of transparent plate-like members and the expandable / expandable member, which fixes the expansion and contraction length of the expandable / expandable member and fixes the expanded / expanded expandable / expandable member between the pair of transparent plate-like members.

[0011] Furthermore, a sound-insulating structure according to one embodiment of the present invention includes a pair of transparent plate-like members, a plurality of through holes arranged densely between the pair of transparent plate-like members in a direction perpendicular to the surface of the transparent plate-like members, and an expandable / expandable member having a configuration that allows expansion and contraction by deformation of the through holes, and a fixing part connected to the pair of transparent plate-like members and the expandable / expandable member, which fixes the expansion and contraction length of the expandable / expandable member and fixes the expanded / expanded expandable / expandable member between the pair of transparent plate-like members.

[0012] The cross-sectional shape of the cylindrical body may be polygonal.

[0013] The cross-sectional shape of the through-hole may be polygonal. [Effects of the Invention]

[0014] The sound-insulating structure according to one embodiment of the present invention has excellent sound insulation properties and can be manufactured at low cost. Furthermore, the sound-insulating structure according to one embodiment of the present invention has a lightweight structure and can be easily installed. Furthermore, the sound-insulating structure according to one embodiment of the present invention has excellent light-transmitting properties while maintaining visibility, thus providing excellent light-gathering properties. [Brief explanation of the drawing]

[0015] [Figure 1] This is a schematic diagram showing an example of how a sound-insulating structure according to one embodiment of the present invention can be used. [Figure 2] This is a schematic perspective view showing the configuration of an expandable member of a sound-insulating structure according to one embodiment of the present invention. [Figure 3] It is a schematic diagram for explaining the elasticity of the expansion and contraction member of the sound insulation structure according to an embodiment of the present invention. [Figure 4] It is a schematic diagram for explaining the elasticity of the expansion and contraction member of the sound insulation structure according to an embodiment of the present invention. [Figure 5] It is a schematic diagram for explaining the elasticity of the expansion and contraction member of the sound insulation structure according to an embodiment of the present invention. [Figure 6] It is a schematic diagram for explaining the sound insulation property of the sound insulation structure according to an embodiment of the present invention. [Figure 7] It is a schematic diagram for explaining the light shielding property of the expansion and contraction member of the sound insulation structure according to an embodiment of the present invention. [Figure 8] It is a schematic plan view showing the configuration of the sound insulation structure according to an embodiment of the present invention. [Figure 9] It is a schematic diagram showing the configuration of the sound insulation structure according to an embodiment of the present invention. [Figure 10] It is a schematic diagram showing an example of the usage mode of the sound insulation structure according to an embodiment of the present invention. [Figure 11] It is a schematic diagram showing the configuration of the sound insulation structure according to an embodiment of the present invention. [Figure 12] It is a schematic diagram for explaining the reverberation box for evaluating the sound insulation property of the sound insulation structure according to an embodiment of the present invention. [Figure 13] It is a graph showing the evaluation result of the sound insulation property of the sound insulation structure according to an embodiment of the present invention.

Embodiments for Carrying Out the Invention

[0016] Hereinafter, embodiments of the present invention will be described with reference to the drawings and the like. However, the present invention includes many different aspects and should not be construed as being limited to the content of the embodiments illustrated below. For the purpose of facilitating understanding of the content of the present invention, the drawings may schematically represent the width, thickness, shape, etc. of each part compared to the actual structure, but this is merely an example and does not limit the content of the present invention. Further, in this specification, when an element described in a certain drawing and an element described in another drawing are in the same or corresponding relationship, the same reference numeral (or a reference numeral with a, b, etc. appended after the numeral described as a reference numeral) may be given, and repeated explanations may be appropriately omitted. Furthermore, the letters “first” and “second” appended to each element are for convenience of distinguishing each element and have no further meaning unless otherwise specified.

[0017] In this specification, when a certain member has “transparency”, it means that it has a high light transmittance and the object on the opposite side can be clearly visually recognized through the member.

[0018] In this specification, when a certain member has “translucency”, it means that it has a high light transmittance but the object on the opposite side cannot be clearly visually recognized through the member. That is, “translucency” does not include “transparency” and includes “translucency” and “opacity”.

[0019] In addition, the following embodiments can be combined with each other as long as no technical contradiction occurs.

[0020] <First Embodiment> Referring to FIGS. 1 to 7, a sound insulation structure 10 according to an embodiment of the present invention will be described.

[0021] [1. Outline of the Structure of the Sound Insulation Structure 10] Figure 1 is a schematic diagram showing an example of how a sound-insulating structure 10 according to one embodiment of the present invention is used. In Figure 1, the sound-insulating structure 10 is attached to a window 500 of a building. The sound-insulating structure 10 includes an expandable member 100, a fixing part 200, and an adjustment part 300. The detailed configuration of the expandable member 100 will be described later, but the expandable member 100 can expand and contract in at least one direction (the y-direction in Figures 1(A) and 1(B)). The fixing part 200 includes a first connecting part 210-1 that connects to the upper end of the expandable member 100 and a second connecting part 210-2 that connects to the lower end of the expandable member 100. The fixing part 200 can fix the expanded and contracted state of the expandable member 100 (more specifically, the position of the lower end of the expandable member 100) so that the expanded and contracted state of the expandable member 100 is maintained. The adjustment section 300 is connected to the fixing section 200 and can adjust the extension / contraction state of the telescopic member 100 (more specifically, the length of the telescopic member 100 in the y-direction). Therefore, the sound-insulating structure 10 can change from the state in which the telescopic member 100 is extended as shown in Figure 1(A) to the state in which the telescopic member 100 is contracted as shown in Figure 1(B). As will be described in detail later, the sound-insulating structure 10 has not only sound-insulating properties but also visibility-blocking properties, so the sound-insulating structure 10 can be used as a so-called blind.

[0022] As described above, the fixing section 200 includes a first connecting section 210-1 and a second connecting section 210-2. The first connecting section 210-1 and the second connecting section 210-2 are connected, for example, via a retractable string-like member. When the string-like member is wound up, the second connecting section 210-2 pushes up the expandable member 100, causing the expandable member 100 to contract. The adjustment section 300 includes, for example, a string-like member, and the string-like member of the adjustment section 300 can be linked with the string-like member of the fixing section 200. Specifically, when the string-like member of the adjustment section 300 is pulled in one direction, the string-like member of the fixing section 200 can be wound up so that the second connecting section 210-2 pushes up the expandable member 100. Also, when the string-like member of the adjustment section 300 is pulled in another direction, the string-like member of the fixing section 200 can be fed out so that the second connecting section 210-2 pushes down the expandable member 100.

[0023] The configuration of the fixing part 200 and the adjustment part 300 is not limited to the configuration described above. The fixing part 200 and the adjustment part 300 only need to be able to adjust and fix the expanded and contracted state of the expandable member 100. Also, the mounting location of the sound-insulating structure 10 is not limited to the window 500. For example, the sound-insulating structure 10 may be mounted so as to cover an opening provided in the wall of a building.

[0024] [2. Structure of the expandable member 100] Figure 2 is a schematic perspective view showing the configuration of an expandable member 100 of a sound-insulating structure 10 according to one embodiment of the present invention. As shown in Figure 2, the expandable member 100 includes a cylindrical body 104 in which a cavity 102 is formed in a direction perpendicular to a plane 550 (the xy plane in Figure 2) (the z direction in Figure 2). The expandable member 100 consists of a plurality of cylindrical bodies 104 arranged in close proximity. Specifically, each of the plurality of cylindrical bodies 104 has a hexagonal cross-sectional shape, and the expandable member 100 is arranged such that adjacent cylindrical bodies 104 are in close contact and as close together as possible.

[0025] Note that a plane 550 is a hypothetical plane. For example, the surfaces of a building's walls, floors, ceilings, doors, or windows can be assumed to be a plane 550.

[0026] The cylindrical body 104 has one end that is in contact with a plane 550 and the other end on the opposite side that is open, allowing visibility from the other end to the one end. The diameter (inner diameter) D of the cylindrical body 104 is between 1 mm and 50 mm. The length L perpendicular to the plane 550 of the cylindrical body 104 is between 10 mm and 300 mm. However, the length L is not limited to the above range and can be appropriately selected depending on the required sound insulation or visibility.

[0027] As will be explained in more detail later, the cross-sectional shape of the cylindrical body 104 in which the cavity 102 is formed can be of various shapes. If the cross-sectional shape is polygonal, the diameter refers to the length of the straight line with the longest length among the straight lines connecting one corner to the other corners.

[0028] The cylindrical body 104 is made of a flexible and light-transmitting resin. For example, polyvinyl chloride can be used as the flexible and light-transmitting resin. The expandable member 100 is formed in a plate shape by connecting (bonding) a plurality of cylindrical bodies 104 to each other. The cylindrical body 104 may also be made of plant fibers including paper, regenerated fibers, synthetic fibers, or thin-film processed metal.

[0029] [3. Elasticity of the expandable member 100] Figure 3 is a schematic diagram illustrating the expandability of the expandable member 100 of a sound-insulating structure 10 according to one embodiment of the present invention. Figure 3(A) is a schematic plan view showing the expanded state (or steady state) of the expandable member 100, and Figure 3(B) is a schematic plan view showing the contracted state of the expandable member 100. Since the expandable member 100 has a flexible cylindrical body 104 and a cavity 102, when a force is applied in the y direction, the cylindrical body 104 (or cavity 102) deforms, and the expandable member 100 can be contracted in the y direction. When the expanded and contracted state of the expandable member 100 shown in Figure 3(A) is the steady state, the expanded and contracted state of the expandable member 100 shown in Figure 3(B) is the biased state, and when the force in the y direction is removed, the expandable member 100 can return to the steady state shown in Figure 3(A).

[0030] The cross-sectional shape of the cylindrical body 104 is not limited to a hexagon. The cross-sectional shape of the cylindrical body 104 may be a substantially polygonal shape such as a triangle or a quadrilateral. Furthermore, the expandable member 100 may be formed by combining cylindrical bodies 104 having different substantially polygonal cross-sectional shapes. Furthermore, the expandable member 100 may be formed by combining cylindrical bodies 104, or by combining multiple parts to form a cylindrical body 104.

[0031] Figures 4 and 5 are schematic diagrams illustrating the expandability of the expandable member 100 of a sound-insulating structure 10 according to one embodiment of the present invention. Specifically, Figures 4(A) and 4(B) are schematic plan views showing the expanded and contracted state of the expandable member 100, which includes a cylindrical body 104 having a rhombic cross-sectional shape, and Figures 5(A) and 5(B) are schematic plan views showing the expanded and contracted state of the expandable member 100, which includes a cylindrical body 104 having a parallelogram cross-sectional shape. As shown in Figures 4 and 5, even when the cross-sectional shape of the cylindrical body 104 is a quadrilateral such as a rhombic or parallelogram, when a force is applied in the y direction, the cylindrical body 104 (or cavity 102) deforms, and the expandable member 100 can be reduced in the y direction.

[0032] As can be seen from Figures 3 to 5, when the expandable member 100 is contracted in the y direction, the cylindrical body 104 of the expandable member 100 does not have a surface parallel to the y direction. The cylindrical body 104 is made of a flexible material, but since the length direction is sufficiently larger than the thickness direction of the surface of the cylindrical body 104, the cylindrical body 104 has high rigidity in the length direction of the surface. Therefore, when the expandable member 100 is contracted in the y direction, if the surface of the cylindrical body 104 is parallel to the y direction, the cylindrical body 104 (or cavity 102) cannot be sufficiently deformed, and therefore the expandable member 100 cannot expand or contract sufficiently. For this reason, it is preferable that each surface constituting the cylindrical body 104 is not parallel to the expansion and contraction direction of the expandable member 100.

[0033] Furthermore, as can be seen from Figures 3 and 4, when the cross-sectional shape of the cylindrical body 104 is hexagonal and rhombic, when the expandable member 100 is contracted, the distance in the x-direction between two adjacent cylindrical bodies 104 in the x-direction increases. In this case, the first connecting portion 210-1 and the second connecting portion 210-2 may each be slidably connected to the expandable member 100. Although not shown, the first connecting portion 210-1 and the second connecting portion 210-2 may each be provided with a guide that allows the cylindrical body 104 to move in the x-direction.

[0034] Furthermore, as can be seen from Figure 5, if the cross-sectional shape of the cylindrical body 104 is a parallelogram, the distance in the x-direction between two adjacent cylindrical bodies 104 in the x-direction does not change even when the expandable member 100 is contracted. In this case, the first connecting portion 210-1 and the second connecting portion 210-2 may each be connected to the expandable member 100 such that the x-direction faces of the cylindrical bodies 104 are fixed.

[0035] In the expandable member 100 shown in Figure 5, two types of symmetrical cylindrical bodies 104 (two types of cylindrical bodies 104 that are mirror images of each other) are arranged alternately in the y-direction. Furthermore, the faces of two adjacent cylindrical bodies 104 in the y-direction are arranged to approximately coincide. However, the arrangement of the parallelogram-shaped cylindrical bodies 104 in the expandable member 100 is not limited to this. In the expandable member 100, the faces of two adjacent cylindrical bodies 104 in the y-direction may be offset.

[0036] [4. Sound insulation properties of the expandable member 100] Figure 6 is a schematic diagram illustrating the sound insulation performance of a sound-insulating structure 10 according to one embodiment of the present invention. In Figure 6, a sound source 600 is located on the opposite side of the window 500 from which the sound-insulating structure 10 is installed. Sound (sound waves) emitted from the sound source 600 are incident on the window 500 at random angles. The sound waves pass through the window 500 and are incident on the expandable member 100 of the sound-insulating structure 10. However, in plate-shaped members with surfaces such as the window 500, resonance occurs where sound waves are amplified, which can reduce sound insulation performance. In particular, resonance in the window 500 is more pronounced and sound insulation performance is more likely to decrease when sound is incident at an oblique angle to the window 500 (oblique incidence) than when sound is incident perpendicular to the window 500 (perpendicular incidence). However, as shown in Figure 6, when the sound-insulating structure 10 is installed on the window 500, the sound waves incident on the expandable member 100 are reflected by the inner surface of the cylindrical body 104 and radiated at an angle perpendicular or nearly perpendicular to the window 500. As a result, resonance in the window 500 is suppressed, and when the sound-insulating structure 10 is installed, the sound insulation performance is improved.

[0037] Although not shown in the diagram, when the sound-insulating structure 10 is installed on the sound source 600 side of the window 500, the sound waves emitted from the sound source 600 are controlled to be incident perpendicularly on the window 500 by the cylindrical body 104 of the expandable member 100. Therefore, even in this case, resonance in the window 500 is suppressed, and the sound insulation performance is improved. Thus, the sound-insulating structure 10 can improve sound insulation performance by suppressing resonance of the plate-shaped member.

[0038] Furthermore, the sound-insulating structure 10 can block sound waves propagating from a specific range (the range covered by the expandable member 100) by expanding or contracting the expandable member 100. In other words, the sound-insulating structure 10 can form a sound-insulating area within a specific range.

[0039] [5. Visibility of the expandable member 100] The sound-insulating structure 10 possesses not only sound-insulating properties but also visibility-blocking properties. Therefore, with reference to Figure 7, the visibility-blocking properties of the sound-insulating structure 10 will be explained.

[0040] Figure 7 is a schematic diagram illustrating the visibility of the expandable member 100 of a sound-insulating structure 10 according to one embodiment of the present invention. In Figure 7, a person 700 is viewed from viewpoint A or viewpoint B through the sound-insulating structure 10 and the window 500. Here, viewpoint A is a viewpoint from a direction parallel to the cavity 102 of the expandable member 100, and viewpoint B is a viewpoint from a direction having a certain inclination from the direction parallel to the cavity 102 of the expandable member 100.

[0041] Light emitted from the person 700 due to light reflection and other factors is random and incident on the expandable member 100 at various angles. Light 710 incident parallel or approximately parallel to the cavity 102 of the expandable member 100 reaches viewpoint A without being affected by the cylindrical body 104. Therefore, light 710 can form an image of the person 700 at viewpoint A. On the other hand, light 720 incident from a direction that is not parallel or approximately parallel to the cavity 102 of the expandable member 100 is absorbed by the material forming the cylindrical body 104, or scattered on its surface or inside. Therefore, even if the expandable member 100 has high light transmittance, light 720 cannot form an image of the person 700 at viewpoint B.

[0042] Therefore, the expandable member 100 has excellent visibility in a specific direction that is parallel or not substantially parallel to the cavity 102. Furthermore, by expanding or contracting the expandable member 100 and reducing the cross-sectional area of ​​the cavity 102, the amount of light transmitted parallel or substantially parallel to the cavity 102 can be reduced. As a result, the reduced expandable member 100 has even better visibility.

[0043] As described above, in the sound-insulating structure 10 according to this embodiment, the expandable member 100 has a structure that suppresses resonance of the plate-shaped member, so the sound-insulating structure 10 has excellent sound insulation properties and can change the sound-insulating area depending on the expansion and contraction state. Furthermore, the sound-insulating structure 10 has not only sound insulation properties but also visibility while maintaining high light transmission. Therefore, when the sound-insulating structure 10 is used as a so-called blind, the sound-insulating structure 10 does not block sunlight, so it has excellent light-transmitting properties.

[0044] Furthermore, the sound-insulating structure 10 has a simple and low-cost construction, as the expandable member 100 does not have a complex configuration, and is lightweight, making it easy to install.

[0045] <Variation> Referring to Figure 8, a modified example of the sound-insulating structure 10A according to one embodiment of the present invention will be described. In the following, if the configuration of the sound-insulating structure 10A is the same as that of the sound-insulating structure 10, the description of the configuration of the sound-insulating structure 10A may be omitted.

[0046] Figure 8 is a schematic plan view showing the configuration of a sound-insulating structure 10A according to one embodiment of the present invention. As shown in Figure 8, the sound-insulating structure 10A includes an expandable member 100A, a fixing part 200, and an adjustment part 300.

[0047] The expandable member 100A includes a sheet-like member 106A and a plurality of through holes 108A that penetrate the sheet-like member 106A. The plurality of through holes 108A are provided over substantially the entire surface of the sheet-like member 106A. The sheet-like member 106A has a thickness of 10 mm to 300 mm. The sheet-like member 106A is made of a flexible and light-transmitting resin, similar to the cylindrical body 104. The cross-sectional shape of the through holes 108A can be various shapes, not just hexagonal, similar to the cylindrical body 104, and their diameter (inner diameter) is between 1 mm and 50 mm.

[0048] Because the expandable member 100A has a flexible sheet-like member 106A and a through-hole 108A, when a force is applied in the y-direction, the sheet-like member 106A (or the through-hole 108A) deforms, and the expandable member 100A can be reduced in the y-direction.

[0049] As described above, in the sound-insulating structure 10A according to this embodiment, the expandable member 100A has a structure that suppresses resonance of the plate-shaped member, so the sound-insulating structure 10 has excellent sound insulation and can change the sound-insulating area according to the expansion and contraction state. Furthermore, the sound-insulating structure 10A has not only sound insulation but also privacy while maintaining high light transmission. Therefore, when the sound-insulating structure 10A is used as a so-called blind, the sound-insulating structure 10A does not block sunlight, so it has excellent light-gathering properties.

[0050] Furthermore, the sound-insulating structure 10A can be manufactured at low cost because the expandable member 100A does not have a complex configuration, and it is also lightweight, making it easy to install.

[0051] <Second Embodiment> Referring to Figures 9 and 10, a sound-insulating structure 20 according to one embodiment of the present invention will be described. Note that in the following description, if the configuration of the sound-insulating structure 20 is the same as that of the sound-insulating structure 10, the description of the configuration of the sound-insulating structure 20 may be omitted.

[0052] Figure 9 is a schematic diagram showing the configuration of a sound-insulating structure 20 according to one embodiment of the present invention. Figures 9(A) and 9(B) show a plan view and a side view of the sound-insulating structure 20, respectively. Figure 10 is a schematic diagram showing an example of how the sound-insulating structure 20 according to one embodiment of the present invention can be used. As shown in Figures 9(A) and 9(B), the sound-insulating structure 20 includes an expandable member 100, a fixing part 200, a first adjustment part 300-1, a second adjustment part 300-2, and a transparent plate-like member 400. The expandable member 100 and the fixing part 200 are arranged on the transparent plate-like member 400. The first connecting part 210-1 and the second connecting part 210-2 are each connected to the transparent plate-like member 400 so as to be movable in the y direction. For example, each of the first connecting portion 210-1 and the second connecting portion 210-2 may be equipped with a guide rail on its side, and the guide rail may engage with the side end of the transparent plate-like member 400, allowing it to move in the y-direction.

[0053] For example, a transparent glass substrate can be used as the transparent plate-like member 400.

[0054] As shown in Figure 10(A), the first adjustment unit 300-1 can raise and lower the second connecting unit 210-2, thereby changing the extended and retracted state of the telescopic member 100. When adjusting the first adjustment unit 300-1, the first connecting unit 210-1 is fixed to the transparent plate-like member 400. Also, as shown in Figure 10(B), the second adjustment unit 300-2 can raise and lower the first connecting unit 210-1, thereby changing the extended and retracted state of the telescopic member 100. When adjusting the second adjustment unit 300-2, the second connecting unit 210-2 is fixed to the transparent plate-like member 400. In other words, in the sound-insulating structure 20, the first adjustment unit 300-1 and the second adjustment unit 300-2 can adjust the raising and lowering of the second connecting unit 210-2 and the first connecting unit 210-1, allowing the telescopic member 100 with any extended and retracted length to be positioned at any position on the transparent plate-like member 400. Therefore, by using the sound-insulating structure 20 as a partition, users can create a sound-insulating area of ​​a desired size at a desired height.

[0055] The expandable member 100 is preferably in contact with the transparent plate-like member 400, and is particularly preferably in close contact with the transparent plate-like member 400. By the expandable member 100 being in contact with the transparent plate-like member 400, sound radiation from the gap between the transparent plate-like member 400 and the expandable member can be prevented, thereby improving sound insulation.

[0056] Furthermore, since the sound-insulating structure 20 includes a transparent plate-like member 400, the amplitude of sound waves can also be attenuated by the transparent plate-like member 400. Even if the transparent plate-like member 400 resonates, the sound-insulating structure 20 can suppress the resonance of the transparent plate-like member 400 by the cylindrical body 104 of the expandable member 100. Therefore, the sound-insulating structure 20 has excellent sound insulation without increasing the thickness of the transparent plate-like member 400.

[0057] As described above, in the sound-insulating structure 20 according to this embodiment, the expandable member 100 has a structure that suppresses resonance of the transparent plate-like member 400, so the sound-insulating structure 20 has excellent sound insulation properties, and the sound-insulating area can be changed according to the position and expansion / contraction state of the expandable member 100. Furthermore, the sound-insulating structure 20 has not only sound insulation properties but also visibility while maintaining high light transmission. Therefore, even when the sound-insulating structure 20 is used as a partition, it does not affect the amount of light that can be collected.

[0058] Furthermore, the sound-insulating structure 20 has a simple and low-cost construction for its expandable members 100, and because it is lightweight, it can be easily installed.

[0059] <Third Embodiment> Referring to Figure 11, a sound-insulating structure 30 according to one embodiment of the present invention will be described. In the following, if the configuration of the sound-insulating structure 20 is the same as that of the sound-insulating structure 10 or the sound-insulating structure 20, the description of the configuration of the sound-insulating structure 30 may be omitted.

[0060] Figure 11 is a schematic diagram showing the configuration of a sound-insulating structure 30 according to one embodiment of the present invention. Figures 11(A) and 11(B) show a plan view and a side view of the sound-insulating structure 30, respectively. As shown in Figures 11(A) and 11(B), the sound-insulating structure 30 includes an expandable member 100, a fixing part 200, a first adjustment part 300-1, a second adjustment part 300-2, a first transparent plate-like member 400-1, and a second transparent plate-like member 400-2. The first transparent plate-like member 400-1 and the second transparent plate-like member 400-2 are arranged facing each other, and the expandable member 100 and the fixing part 200 are arranged between the first transparent plate-like member 400-1 and the second transparent plate-like member 400-2. Each of the first connecting portion 210-1 and the second connecting portion 210-2 only needs to be connected to at least one of the first transparent plate-like member 400-1 and the second transparent plate-like member 400-2 so as to be movable in the y direction. In the sound-insulating structure 30, the first transparent plate-like member 400-1 and the second transparent plate-like member 400-2 can function as guides for the expandable member 100 in the z direction. Therefore, in the sound-insulating structure 30, the expansion and contraction state of the expandable member 100 is stabilized because the expansion and contraction of the expandable member 100 is prevented from protruding in the z direction.

[0061] Furthermore, since the sound-insulating structure 30 includes a first transparent plate-like member 400-1 and a second transparent plate-like member 400-2, the amplitude of sound waves can also be attenuated by the first transparent plate-like member 400-1 and the second transparent plate-like member 400-2. Even if the first transparent plate-like member 400-1 or the second transparent plate-like member 400-2 resonates, the sound-insulating structure 30 can suppress the resonance of the first transparent plate-like member 400-1 or the second transparent plate-like member 400-2 by the cylindrical body 104 of the expandable member 100. Therefore, the sound-insulating structure 30 has excellent sound insulation without increasing the thickness of the first transparent plate-like member 400-1 and the second transparent plate-like member 400-2.

[0062] As described above, in the sound-insulating structure 30 according to this embodiment, the expandable member 100 has a structure that suppresses resonance between the first transparent plate-like member 400-1 and the second transparent plate-like member 400-2. Therefore, the sound-insulating structure 30 has excellent sound insulation properties, and the sound-insulating area can be changed according to the position and expansion / contraction state of the expandable member 100. Furthermore, in the sound-insulating structure 30, since the expandable member 100 is provided between the pair of transparent plate-like members 400, the expansion / contraction state of the expandable member 100 can be stabilized. Moreover, the sound-insulating structure 20 has not only sound insulation properties but also visibility while maintaining high light transmission. Therefore, even when the sound-insulating structure 20 is used as a partition, it does not affect the amount of light that can be collected.

[0063] Furthermore, the sound-insulating structure 30 has a simple and low-cost construction, as the expandable member 100 does not have a complex configuration, and is lightweight, making it easy to install. [Examples]

[0064] Refer to Figures 12 and 13 to describe the experimental results evaluating the sound insulation performance of the sound-insulating structure 30.

[0065] Figure 12 is a schematic diagram illustrating a reverberation box 800 for evaluating the sound insulation performance of a sound-insulating structure 30 according to one embodiment of the present invention. The reverberation box 800 includes a dodecahedral speaker 810 and a plurality of internal microphones 820 inside an acrylic box. The speaker 810 is positioned in the center, and the internal microphones 820 are arranged to surround the speaker 810. An opening 830 is provided at the top of the box, allowing a sample to be placed in the opening 830. After the sample is placed in the opening 830, a plurality of surface microphones 840 are placed on the sample.

[0066] To evaluate sound insulation, speaker 810 emitted pink noise in the range of 250Hz to 8000Hz, and the internal sound pressure level and surface sound pressure level were measured using internal microphone 820 and surface microphone 840, respectively. Furthermore, sound insulation was evaluated based on the average internal sound pressure level and average surface sound pressure level obtained by averaging the measurements taken with multiple microphones.

[0067] As an example sample, a sound-insulating structure was used in which multiple 10mm thick polyvinyl chloride cylindrical bodies, each with a hexagonal cross-section and a diameter of 3mm, were placed between two 3mm thick 300mm x 300mm glass panels. As a comparative example sample, a sound-insulating structure without the multiple cylindrical bodies found in the example sample was used.

[0068] Figure 13 shows graphs of the sound insulation evaluation results for the example sample and the comparative example sample. In the graph in Figure 13(A), the horizontal axis is frequency (Hz) and the vertical axis is sound pressure level difference (dB). The sound pressure level difference is the value obtained by subtracting the average surface sound pressure level from the average internal surface sound pressure level. In the graph in Figure 13(B), the horizontal axis is frequency (Hz) and the vertical axis is improvement amount (dB). The improvement amount is the value obtained by subtracting the sound pressure level difference of the comparative example sample from the sound pressure level difference of the example sample. In other words, a larger improvement amount indicates that the example sample shields sound better than the comparative example sample and has superior sound insulation performance.

[0069] As can be seen from Figure 13(B), the improvement is significant, confirming that the example sample has superior sound insulation compared to the comparative example sample. In other words, it was confirmed that the sound-insulating structure 30, by including the expandable member 100, is superior not only in terms of visibility but also in terms of sound insulation. [Explanation of symbols]

[0070] 10, 10A, 20, 30: Sound-insulating structure, 100, 100A: Expandable member, 102: Cavity, 104: Cylindrical body, 106A: Sheet-like member, 108A: Through hole, 200: Fixing part, 210: Connection part, 300: Adjustment part, 400: Transparent plate-like member, 500: Window, 550: Flat surface, 600: Sound source, 700: Person, 710, 720: Light, 800: Reverberation box, 810: Speaker, 820: Internal microphone, 830: Opening, 840: Surface microphone

Claims

1. A transparent plate-like member, A plurality of cylindrical bodies, each having a cavity in a direction perpendicular to the surface of the transparent plate-like member, are densely arranged on the transparent plate-like member, and the expandable member has a configuration that allows expansion and contraction by deformation of the cylindrical bodies, A sound-insulating structure comprising: a transparent plate-like member and a fixing part connected to the expandable member, which fixes the expanded and contracted length of the expandable member and fixes the expanded and contracted member on the transparent plate-like member.

2. A transparent plate-like member, An expandable member having a configuration in which a plurality of through holes are densely arranged on the transparent plate-like member in a direction perpendicular to the surface of the transparent plate-like member, and the through holes are deformable to allow expansion and contraction, A sound-insulating structure comprising: a transparent plate-like member and a fixing part connected to the expandable member, which fixes the expanded and contracted length of the expandable member and fixes the expanded and contracted member on the transparent plate-like member.

3. A pair of transparent plate-like members, Between the pair of transparent plate-like members, a plurality of cylindrical bodies, each having a cavity in a direction perpendicular to the surface of the pair of transparent plate-like members, are densely arranged, and the expandable member has a configuration that allows for expansion and contraction by deformation of the cylindrical bodies. A sound-insulating structure comprising: a pair of transparent plate-like members and a fixing portion connected to the expandable member, which fixes the expanded and contracted length of the expandable member and fixes the expanded and contracted member between the pair of transparent plate-like members.

4. A pair of transparent plate-like members, Between the pair of transparent plate-like members, a plurality of through holes are densely arranged in a direction perpendicular to the surface of the transparent plate-like members, and the expandable member has a configuration that allows it to expand and contract as the through holes deform. A sound-insulating structure comprising: a pair of transparent plate-like members and a fixing portion connected to the expandable member, which fixes the expanded and contracted length of the expandable member and fixes the expanded and contracted member between the pair of transparent plate-like members.

5. The sound-insulating structure according to claim 1 or claim 3, wherein the cross-sectional shape of the cylindrical body is polygonal.

6. The sound-insulating structure according to claim 2 or claim 4, wherein the cross-sectional shape of the through-hole is polygonal.

7. The sound-insulating structure according to any one of claims 1 to 6, wherein the expandable member is light-transmitting.

8. A partition comprising a sound-insulating structure according to any one of claims 1 to 7.

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