JPH08246574A - Sound absorbing body for interior - Google Patents

Abstract

PURPOSE: To effectively use a sound effect such as a reverberation so as to prevent sound disturbance such as flutter echo by using a space on the back face side of a thin and long diffusion member made of knitted natural material and sticking a sound absorbing member on the back face. CONSTITUTION: A sound absorbing body 1 for the interior is constructed of a diffusing member 2 formed into a semi-cylinder and a sound absorbing member 3 adhering to the back face of the diffusing member 2. The diffusing member 2 is provided with a circular arc cross section, which is provided when a cylinder is split into two, and is formed into a vertically long shape. The whole wall is covered with the sound absorbing bodies 1, in each of which the sound absorbing member 3 side serves as a mounting face, in the same way as a tile application method. Natural material is knitted and heated so as to be bent circularly, and then, the diffusing member 2 is formed. A sound colliding against the circular surface of the diffusing member 2 is not reflected in the same direction but is dispersedly reflected because of the shape of the whole diffusion member 2 or uneven shapes in respective knitted parts. A sound penetrating from gaps in the knitted parts or the joint parts in the diffusing member 2 to the back face side space 4 is damped by means of a resonance type sound absorbing structure consisting of the diffusing member 2 and its knitted parts and joint parts and is damped by means of the sound absorbing member 3 at the same time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound absorber for interior, which is attached to a wall or ceiling of a listening room, a musical instrument practice room, a recording studio or the like for acoustic adjustment.

[0002]

2. Description of the Related Art In a room requiring acoustic adjustment, to effectively utilize acoustic effects such as reverberation, and to eliminate acoustic obstacles such as reverberation (flutter echo), various interior materials for walls and ceilings are used. It is common practice to use an acoustic plate and to incline or even form a wall surface or a ceiling surface of the interior acoustic plate.

[0003]

In such a conventional acoustic room, the interior acoustic plate itself has a uniform design such as a perforated structure or a slit structure.
Even if a wall surface or a ceiling surface is formed to have irregularities by using this interior acoustic plate, the interior design will be standardized. That is, there is a problem that the interior effect is restricted because the acoustic effect is prioritized.

The present invention has been made in order to solve the above problems, and provides an interior sound absorber which can increase the degree of freedom in the design of the room without impairing the acoustic effect in the room. That is the purpose.

[0005]

In order to achieve the above object, an interior sound absorber according to claim 1 is formed by weaving a natural material and has an elongated diffusion member having a space on the back side, and a diffusion member. And a sound absorbing material attached to the back surface of the.

The sound absorbing body for interior according to claim 2 is formed by arranging natural materials side by side, and comprises an elongated diffusion member having a space on the back surface side, and a sound absorbing material attached to the back surface of the diffusion member. It is characterized by

In the first or second aspect, it is preferable that the diffusing member has a circular cross section or a mountain cross section.

According to a fifth aspect of the present invention, there is provided an interior sound absorbing body comprising a diffusing member formed by braiding a natural material, a sound absorbing material attached to a back surface of the diffusing member, and a holding frame for holding the diffusing member and the sound absorbing material. It is characterized by having.

The sound absorber for interior according to claim 6 comprises a diffusing member formed by arranging natural materials side by side, a sound absorbing material adhered to the back surface of the diffusing member, and a holding frame for holding the diffusing member and the sound absorbing material. It is characterized by having.

In any one of claims 1 to 6, it is preferable that the natural material is cedar, cypress, paulownia, straw, bamboo, rattan, hagi, reed, mackerel, and garlic.

[0011]

According to the sound absorber for interior according to claim 1, by forming the diffusing member by braiding a natural material, it is possible to continuously form the convex surface and the concave surface on the surface of the diffusing member. The diffusing member can be made breathable. Therefore, the sound that hits the surface of the diffusing member from the indoor side is diffusely reflected, while the sound that has entered the space on the back side from the stitches of the natural material is a resonance-type sound absorber composed of this space and the stitches of the natural material. Sound is absorbed by the sound absorbing material, and at the same time, sound is absorbed by the sound absorbing material attached to the back surface of the diffusing member. Therefore, most of the sound reaching the interior sound absorber is absorbed by the sound absorber and diffused diffusely into the room. In this case, the diffusing characteristics can be appropriately controlled by the size of the diffusing member and the knitting method of the natural material. Therefore, it is possible to construct a room having desired acoustic characteristics by mounting a large number of the interior sound absorbers on the wall surface, and at the same time, it is possible to make good use of natural materials by the shape, size, and mounting pattern of the interior sound absorber. The interior design can be configured.

According to the sound absorber for interior according to claim 2, by forming the diffusing member by arranging the natural materials side by side, it is possible to form the convex surface and the concave surface on the surface of the diffusing member, and also to form the diffusing member. Can be breathable. Therefore, similarly to the above, the sound that hits the surface of the diffusing member is diffusely reflected, while the sound that enters the space on the back side from the joint of the natural material is a resonance composed of the joint of this space and the natural material. Sound is absorbed by the sound absorber of the mold, and at the same time, sound is absorbed by the sound absorbing material attached to the back surface of the diffusion member. Therefore, most of the sound reaching the interior sound absorber is absorbed by the sound absorber and diffused diffusely into the room. In this case, depending on the size of the diffusing member and how the natural materials are arranged,
The diffusion characteristics can be controlled appropriately, and a good interior design can be constructed.

According to the sound absorber for interior according to the third or fourth aspect, since the cross-sectional shape of the diffusing member is an arc shape or a mountain shape, the sound can be diffused and reflected even by the entire shape of the diffusing member. In addition, the interior sound absorber itself can be easily manufactured, and the wall surface can be freely finished with a soft design utilizing natural materials.

According to the sound absorber for interior according to claim 4, by forming the diffusing member by braiding a natural material, it is possible to continuously form a convex surface and a concave surface on the surface of the diffusing member. The diffusing member can be made breathable. Therefore, the sound that hits the surface of the diffusing member from the indoor side is diffusely reflected, while the sound that enters the space on the back surface side from the stitches of the natural material is absorbed by the sound absorbing material. In this case, since the diffusing member and the sound absorbing material are integrated by the holding frame, the sound absorbing body itself can be constructed in a panel form.

According to the sound absorber for interior according to claim 5, by forming the diffusing member by arranging the natural materials side by side, it is possible to form the convex surface and the concave surface on the surface of the diffusing member, and at the same time, the diffusing member can be formed. Can be breathable. Therefore, similarly to the above, the sound that hits the surface of the diffusing member is diffusely reflected, while the sound that has entered the space on the back surface side from the seam of the natural material is absorbed by the sound absorbing material.
Further, similarly to the above, the sound absorbing body itself can be constructed in a panel form.

According to the sixth aspect of the sound absorbing body for interior, the natural material is any of cedar, cypress, paulownia, sawara, bamboo, rattan, hagi, reed, mackerel, and cabbage, so that the material can be obtained. Moreover, it is easy to process and the sound absorber itself can be finished in a calm design.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the sound absorbing body for interior of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a perspective view of an interior sound absorber according to the first embodiment. As shown in FIG. 1, the interior sound absorber 1 includes a semi-cylindrical diffusion member 2 and a back surface of the diffusion member 2. And the sound absorbing material 3 attached to. The diffusing member 2 has an arc-shaped cross section obtained by dividing a cylinder in half, and is formed in a vertically long shape. The sound absorber 1 for interior has a mounting surface on the sound absorbing material 3 side, and is provided so as to cover the entire wall surface like tiling.

The diffusing member 2 is made of cedar, cypress, paulownia, straw, bamboo,
It is formed by braiding a natural material 2a such as rattan, hagi, reed, mackerel, and garlic, and heating and bending it into an arc shape. For example, as the woody natural material 2a such as cedar, cypress, paulownia, and straw, thinly sliced strips are used. Further, as the natural material 2a such as bamboo, reed, mackerel, and garlic, split bamboo or thinly split split bamboo is used. Furthermore, the natural material 2a such as rattan and Hagi is used in a string form. And these are knitted by a net-knitting or a fourth stitch. In addition, in order to prevent the mold from being deformed, an adhesive or a paint may be applied to the diffusing member 2 which is braided and bent in an arc shape (however, be careful not to impair the air permeability). In this case, the diffusing member 2 acts as a so-called resonance type sound absorber due to the back surface side space 4 formed in an arc shape and the slits formed by the stitches of the natural material 2a, and the back surface of the diffusing member 2 from the stitches. Attenuates the sound entering the side.

The sound absorbing material 3 is made of a porous sound absorbing material such as glass wool, rock wool, urethane foam, etc., and is attached to the back surface side space 4 of the diffusing member 2 and is attached in an arc shape so as to fit therein. ing. Therefore, the sound that has entered from the stitches of the natural material 2 a is absorbed in the process of passing through the sound absorbing material 3, and is absorbed while being repeatedly reflected in the space 4. In addition, as shown in FIG. 2, the back surface side space 4 of the diffusion member 2 may be attached so as to be filled with the sound absorbing material 3.

FIG. 3 is a perspective view of an interior sound absorber according to the second embodiment. The sound absorber 11 for interior use is composed of a diffusing member 12 formed in a semi-cylindrical shape and a sound absorbing material 13 attached to the back surface of the diffusing member 12, and the diffusing member 12 is cedar,
Natural materials 12a such as cypress, paulownia, straw, bamboo, rattan, hagi, reed, mackerel, and garlic are arranged side by side to form an arc shape. In this case, the natural materials 12a such as cedar, cypress, paulownia, straw, and thick bamboo are processed into a square bar or a round bar, which are arranged side by side through a cored bar. In addition, natural materials such as bamboo, rattan, hagi, reeds, mackerel and cabbages 1
2a is arranged in a round bar shape or divided in half and arranged side by side through a cored bar. Note that a plurality of types of natural materials 12a may be combined and arranged side by side.

As described above, according to the interior sound absorbers 1 and 11 of the first and second embodiments, the sound hitting the arc-shaped surfaces of the diffusing members 2 and 12 depends on the overall shape and braiding. Alternatively, due to the concavo-convex shape of the individual parts due to the side-by-side arrangement, they are diffusely reflected without being reflected in the same direction. on the other hand,
From the stitches and the joints of the diffusing members 2 and 12 to the back side space 4
The sound that has penetrated into is attenuated by the resonance type sound absorbing structure composed of the diffusion members 2 and 12 and the stitches and joints thereof, and at the same time, is attenuated by the sound absorbing materials 3 and 13. Therefore, by using a large number of interior sound absorbers 1 and 11 to form the interior finish surface of the wall or ceiling, acoustic interference such as flutter echo can be effectively prevented. In addition, the sound absorption characteristics and the diffusion characteristics change depending on the cross-sectional shape, size, length, and knitting and arrangement of the natural materials 2a and 12a of the interior sound absorbers 1 and 11 themselves, the diffusion members 2 and 12, and thus the acoustic Various controls can be performed easily.

On the other hand, not only the materials of the natural materials 2a and 12a forming the diffusing members 2 and 12, the knitting method and the arrangement method, but also the shape and the mounting pattern of the interior sound absorbers 1 and 11 themselves are design elements of the interior. By appropriately combining these elements, the inner wall surface can be finished to have a good interior design. That is, the degree of freedom in interior design can be increased without impairing the desired acoustic effect. The shape of the interior sound absorbing body used in the above-mentioned examples is not only an arc-shaped cross section, but also a convex cross section such as a mountain shape, a house shape or the like, or an “M” shape or other concave cross section, or a combination thereof. It may be.

FIG. 4 is a perspective view of an interior sound absorber of the third embodiment. The sound absorber 21 for interior includes a diffusion member 22 formed in a flat plate shape, a sound absorbing material 23 attached to the back surface of the diffusion member 22, and a holding frame 24 that holds the diffusion member 22 and the sound absorbing material 23. Is formed in a panel shape. Like the first embodiment, the diffusing member 22 is made of cedar, cypress, paulownia,
It is formed by braiding natural materials 22a such as straw, bamboo, rattan, hagi, reed, mackerel, and cabbage with a net-knitting or a fourth knitting. The holding frame 24 is made of the natural material 2 of the diffusion member 22.
It is made of wood or bamboo (split bamboo) according to 2a.

In this case, in consideration of workability, the sound absorbing body 21 for interior use has a square shape of 300 mm × 300 mm, 600 mm × 600 mm, or 300 mm × 600 mm, 600 mm × 1.
It is preferably formed in a rectangular shape such as 200 mm, 900 mm × 1800 mm. Further, in consideration of the design, it may be formed in a rhombus or a circle.

FIG. 5 is a perspective view of an interior sound absorber of the fourth embodiment. The sound absorber 31 for interior includes a diffusing member 32 formed in a flat plate shape, a sound absorbing material 33 attached to the back surface of the diffusing member 32, and a holding frame 34 that holds the diffusing member 32 and the sound absorbing material 33. Similar to the second embodiment, the diffusion member 32
Is formed by arranging natural materials 32a such as cedar, cypress, paulownia, straw, bamboo, rattan, hagi, reed, mackerel, and cabbage side by side.

As described above, according to the interior sound absorbers 21 and 31 of both the third and fourth embodiments, the sound hitting the surfaces of the diffusing members 22 and 32 is generated by the braided or lined individual parts. Due to the uneven shape, without being reflected in the same direction,
It is diffusely reflected. On the other hand, the sound that has entered the back surface side space 5 through the stitches or the seams of the diffusion members 22 and 32 is
Attenuated by 3,33. Therefore, the sound absorber 2 for interior
By constructing the interior finishing surface of the wall or ceiling by using Nos. 1 and 31, it is possible to effectively prevent acoustic interference such as flutter echo. In addition, the interior sound absorbers 21, 31
Since the sound absorption characteristics and the diffusion characteristics change depending on the structure of itself and the number of the elements arranged on the wall surface, acoustic control can be easily performed. On the other hand, the inner wall surface can be finished in a good interior design by devising the material of the natural materials 22a and 32a forming the diffusion members 22 and 32 and the method of weaving and arranging. That is, the degree of freedom in interior design can be increased without impairing the desired acoustic effect.

FIG. 6 shows an example of an acoustic room acoustically designed using the interior sound absorber 11 of the second embodiment and the interior sound absorber 21 of the third embodiment. In this acoustic room, the sound absorbing body 11 for the interior of the second embodiment, which is formed by using a natural material 12a such as thin bamboo, is arranged in a corner portion of the room, and the natural bamboo material 12a is formed by a mesh-shaped braided shape. The two interior sound absorbers 21 of the third embodiment are arranged side by side on the wall surface in the room.

As described above, various interior sound absorbers 11 and 2 are used.
The sound design of the acoustic room can be made more appropriate by using a plurality of 1 and the sound absorption for interior can be made by devising the shape, material and mounting position of the interior sound absorbers 11 and 21. The bodies 11 and 21 can be effectively incorporated into the interior design. Therefore, it is possible to provide an interior design that does not exist in the conventional acoustic room.

[0029]

As described above, according to the interior sound absorber of the present invention, the sound absorption characteristics and the diffusion characteristics can be freely controlled. Therefore, by using this as an interior material, acoustic effects such as reverberation can be effectively utilized. In addition, it is possible to prevent acoustic interference such as flutter echo. Further, by using a natural material, it is possible to improve the interior design and increase the degree of freedom without impairing the acoustic effect.

[Brief description of drawings]

FIG. 1 is an external perspective view of an interior sound absorber according to a first embodiment of the present invention.

FIG. 2 is a perspective view of an interior sound absorber according to a modification of the first embodiment.

FIG. 3 is an external perspective view of an interior sound absorber according to a second embodiment.

FIG. 4 is an external perspective view of an interior sound absorber according to a third embodiment.

FIG. 5 is an external perspective view of an interior sound absorber according to a fourth embodiment.

FIG. 6 is an interior perspective view of an acoustic room acoustically designed using the interior sound absorbers of the second and third embodiments.

[Explanation of symbols]

 1, 11, 21, 31 Sound absorber for interior 2, 12, 22, 32 Diffusing member 2a, 12a, 22a, 32a Natural material 3 13, 23, 33 Sound absorbing material 4 Space

Claims (7)

[Claims] 1. An interior use characterized by comprising an elongated diffusion member formed by braiding a natural material and having a space on the back surface side, and a sound absorbing material attached to the back surface of the diffusion member. Sound absorber. 2. An interior use characterized by comprising an elongated diffusion member formed by arranging natural materials side by side and having a space on the back side, and a sound absorbing material attached to the back side of the diffusion member. Sound absorber. 3. The sound absorber for interior according to claim 1, wherein the diffusion member has an arc-shaped cross section. 4. The sound absorber for interior according to claim 1, wherein the diffusion member has a mountain-shaped cross section. 5. A diffusion member formed by braiding a natural material, a sound absorbing material attached to the back surface of the diffusion member, and a holding frame for holding the diffusion member and the sound absorbing material. Sound absorber for interior. 6. A diffusion member formed by arranging natural materials side by side, a sound absorbing material attached to a back surface of the diffusion member, and a holding frame for holding the diffusion member and the sound absorbing material. Sound absorber for interior. 7. The natural material is cedar, cypress, paulownia, straw,
The sound absorber for interior according to any one of claims 1 to 6, which is any one of bamboo, rattan, hagi, reed, mackerel, and cabbage.