JPH10227084A - Sound absorbing device and sound absorbing structure for room - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily mount a sound absorbing device on a wall or the like by attaching a bowl type resonance box to a flat plate body in such a state as upside down, and forming a vent hole on the plate body, so as to be communicated to space formed out of the plate body and the resonance box. SOLUTION: A plurality of bowl type resonance boxes 3 having different depth, width and height are prepared and a plate body 2 having a peripheral frame 22 is provided with a plurality of vent holes 21. A plurality of the resonance boxes 3 are bonded to the plate body 2 in such a state as upside down by use of an adhesive, so that the vent holes 21 come to be positioned approximately at a center, thereby forming a sound absorbing device 1. Furthermore, a plurality of the sound absorbing devices 1 so formed are mounted on the upper part of a room wall along a ceiling, with the vent holes 21 directed toward the room. Thus, a sound after entering the sound absorbing devices 1 from the vent holes 21 further enters space formed out of the plate body 2 and the resonance boxes 3 and is absorbed, due to the same action as the Helmholtz resonator. According to this construction, the sound absorbing devices 1 can be easily mounted on a wall or the like, and a noise can be absorbed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a sound absorbing device and a sound absorbing structure of a room to which the sound absorbing device is attached.

[0002]

2. Description of the Related Art Conventionally, as a sound absorbing device, a Hertzholtz resonator is well known. This Helmholtz resonator is
A resonance box surrounded by a closed wall, and a ventilation hole communicating with the inside of the resonance box is provided on a part of the wall of the resonance box, and the resonance box is protruded from the wall. In addition, the air holes are used by attaching the air holes toward the room.

Further, as described in Japanese Patent Application Laid-Open No. Sho 60-105743, a wall panel in which a plurality of wall materials having different sound absorption characteristics are provided on a substrate is known. This wall panel is a resonance box composed of a wall material having a vent and a bottom plate at a different distance from the wall material, and is used by attaching the wall panel to a wall portion of a building.

[0004]

However, when mounted on a wall or ceiling, the Helmholtz resonator is ugly because the resonance box protrudes into the room, and the protruding resonance box is obstructive. Problem. In particular, in order to absorb various sounds with different wavelengths, it is necessary to attach resonance boxes of various sizes, and a Helmholtz resonator having such resonance boxes of different sizes is mounted on a wall or ceiling. When installed, the walls and ceilings become ugly because of the different lengths and widths that protrude from the walls and ceilings.

[0005] The wall panel is convenient when a new wall is provided, but has a problem that it cannot be attached to an existing wall. Therefore, an object of the present invention is to provide a sound absorbing device that has a flat surface and can be easily attached to an existing wall or ceiling, and a sound absorbing structure for a room in which the sound absorbing device is attached to a wall. .

[0006]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object. According to the first aspect of the present invention, a bowl-shaped resonance box is placed on a flat plate. The plate body is provided with a ventilation hole communicating with a space formed by the plate body and the resonance box body.

[0007] According to a second aspect of the present invention, a flat plate body is provided.
A plurality of resonance boxes formed in two or more different sizes are mounted in a prone state, and this plate body includes:
A ventilation hole communicating with a space formed by the plate body and the resonance box body is provided.

According to a third aspect of the present invention, the sound absorbing device according to the first or second aspect is attached to a surface facing the interior of the room with the flat plate body facing the front.

The plate and the resonance box used in the first aspect of the invention may be made of appropriate materials, but the synthetic resin is easy to mold, and the plate and the resonance box are bonded with an adhesive or the like. It is preferable because it can be easily attached.

(Function) According to the first aspect of the present invention, a bowl-shaped resonance box is attached to a flat plate in a state where the bowl-shaped resonance box is faced down. Since the ventilation hole communicating with the formed space is provided, it can be easily attached to a place requiring sound absorption such as a wall or a ceiling.
That is, even when a wall, a ceiling, or the like is provided, or when a wall, a ceiling, or the like already exists, it can be easily attached.

When the sound absorbing device is mounted on a wall or ceiling and the ventilation holes are directed toward the room, the sound coming from the ventilation holes is transmitted to the space formed by the plate and the resonance box in a Helmholtz resonator. It is absorbed by the same action as. In addition, since the ventilation holes are provided in the flat plate, even if the ventilation holes are mounted toward the room, the bowl-shaped resonance box does not project into the room.

[0012] According to a second aspect of the present invention, a flat plate is provided.
A plurality of resonance boxes formed in two or more different sizes are mounted in a prone state, and this plate body includes:
Since a ventilation hole communicating with the space formed by the plate and the resonance box is provided, the resonance wavelengths of the resonance boxes having different sizes differ from each other. As a result, sounds of two or more different wavelengths are absorbed.

According to the third aspect of the present invention, since the sound absorbing device according to the first or second aspect is mounted on a wall of a room with the flat plate body facing the front, sound is absorbed and the room is kept in the room. The bowl-shaped resonance box does not project.

[0014]

Next, embodiments of the present invention will be described. (Embodiment 1) FIGS. 1 and 2 show one embodiment of the present invention. FIG. 1 (a) is an explanatory view of a sound absorbing device viewed from an oblique direction, and FIG. 1 (b) is a view of (a) viewed from a side. FIG. 2 is an explanatory view showing a use state of the sound absorbing device.

In FIGS. 1 and 2, reference numeral 1 denotes a sound absorbing device made of synthetic resin. As shown in FIG. 1, the sound absorbing device 1 has a vertical plate-shaped frame 22 having a height of 30 mm around the periphery. A plurality of bowl-shaped resonance boxes 3 are mounted on a flat plate 2 having a length of 450 mm and a width of 450 mm. The plate 2 is provided with a ventilation hole 21 communicating with the space 4 formed by the plate 2 and the resonance box 3.

A plurality of resonance boxes 3 are provided, and the resonance boxes 3 are different in length, width, and depth. Therefore,
The space formed by the resonance box 3 and the plate 2 resonates with sounds having different wavelengths. Therefore, the sound absorbing device 1 can absorb sounds of various heights. 4 is a room. 5 is a wall of the room 4 and 6 is a ceiling of the room 4. 7 is wall 5 and ceiling 6
A cloth cloth attached to the surface of the cloth.

Next, a description will be given of a method of manufacturing, using, and operating the sound absorbing device. A plurality of ventilation holes 21 are provided in the plate 2 around which the frame 22 is provided, and the ventilation holes 21 are placed substantially in the center so that the bowl-shaped resonance box 3 is brought into contact with the ventilation holes 21. The sound absorbing device 1 is manufactured by bonding. As shown in FIG. 2, the plurality of sound absorbing devices 1 are attached to an upper portion of a wall 5 along a ceiling 6. At this time, the air holes 21 face the room. A cloth cloth 7 is attached to the wall 5 and the ceiling 6. At this time, as shown in FIG. 2, the cloth cloth 7 is attached while the sound absorbing device 1 is covered with the cloth cloth 7.

As described above, the sound absorbing device 1 can be easily attached to the existing wall 5 or the like. Also, sound absorbing device 1
Is attached to the wall 5 with the ventilation holes 21 facing the room,
The sound that has entered through the vent hole 21 enters spaces of different sizes formed by the plate 2 and the resonance box 3, and is absorbed by the same action as the Helmholtz resonator. In addition, since the size of the space formed by the plate 2 and the resonance box 2 is variously different, sounds of various wavelengths are absorbed, and the room becomes quiet. Further, since the ventilation holes 21 are provided in the flat plate body 2, the bowl-shaped resonance box body 3 does not protrude into the room 4, so that it is beautiful. Further, when the sound absorbing device 1 is covered with the cloth cloth 7, the sound absorbing device 1 becomes invisible and becomes more beautiful.

[0019]

According to the first aspect of the present invention, a bowl-shaped resonance box is attached to a flat plate in a state where it is face down,
Since this plate body is provided with a vent hole that communicates with the space formed by the plate body and the resonance box body, even when providing a wall or ceiling, or even when the wall or ceiling already exists, It is convenient because it can be easily installed. In addition, since the ventilation holes are provided in the flat plate, if the ventilation holes are mounted facing the room, the bowl-shaped resonance box does not protrude into the room. Does not
It is beautiful.

According to a second aspect of the present invention, there is provided a flat plate body,
A plurality of resonance boxes formed in two or more different sizes are mounted in a prone state, and the plate is provided with a ventilation hole communicating with a space formed by the plate and the resonance box. Is provided, so that sounds of two or more different wavelengths are absorbed, which is suitable for absorbing various noises.

According to a third aspect of the present invention, since the sound absorbing device according to the first or second aspect is mounted on a wall of a room with a flat plate-shaped body facing the front, sound is absorbed, and Since the bowl-shaped resonance box does not protrude, the room does not become ugly even when the sound absorbing device is attached, which is extremely effective.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention, in which (a) is an explanatory diagram of the sound absorbing device as viewed from an oblique direction, and (b) is an explanatory diagram of (a) as viewed from the side.

FIG. 2 is an explanatory diagram showing a use state of the sound absorbing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sound absorbing device 2 Plate 21 Vent hole 3 Resonance box 4 Room 5 Wall 6 Ceiling 7 Cloth cloth

Claims (3)

[Claims] 1. A bowl-shaped resonance box is attached to a flat plate in a state where the bowl-shaped resonance box is prone, and a ventilation hole communicating with a space formed by the plate and the resonance box is provided in the plate. A sound absorbing device, which is provided. 2. A flat plate body, a plurality of resonance boxes formed in two or more different sizes are mounted in a prone state, and the plate body and the resonance box are attached to the plate body. A sound-absorbing device characterized by having a ventilation hole communicating with a space formed by the body. 3. A sound absorbing structure for a room, wherein the sound absorbing device according to claim 1 or 2 is mounted on a surface facing the inside of the room with the flat plate body facing the front.