JPS6229523Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an acoustic device for use on the walls of rooms such as theaters and music performance halls where acoustic effects are particularly important.

Conventionally, indoor wall members used in acoustic devices are usually completely fixed, and the acoustic effects produced by the walls are constant. Therefore, depending on the type and shape of the front outer panels of the wall members and the sound-absorbing materials placed behind them, for example, in the room, only acoustic effects suitable for theatrical performances may be obtained, or only acoustic effects suitable for music performances may be obtained. obtained, or theater/
The reality is that only half-hearted acoustic effects are obtained for any performance.

In view of these circumstances, the present invention aims to provide an acoustic device using wall members constituting a wall surface that can vary the acoustic effects.

In order to achieve this objective, the present invention provides an acoustic control room with an open wall surface, covers the open surface of the sound control room with wall members arranged vertically in multiple stages, and moves the wall members from a vertical position to a horizontal position 90 degrees. The wall member is configured so that it can be swung at the same angle over an angular range of A back side outer plate made of a perforated plate with a shape of a shape is stretched, a sound absorbing material is filled between the two outer plates, and a rotation center protruding outward in the opposite direction is provided on a pair of opposing sides of the left and right bone frames. A shaft is provided, and a packing material is provided along the upper edge of the upper side of the frame, so that the space between vertically adjacent wall members is sealed in the vertical position of the wall member. This is a sound device that uses

Hereinafter, embodiments of the present invention will be described based on the drawings.

FIG. 1 is a front view of the wall surface, and FIG. 2 is a longitudinal cross-sectional view taken along the line -2.

This wall surface is constructed by providing an acoustic control chamber 2 with an open wall surface side between each pillar material 1 erected at appropriate intervals, and a wall surface member in which the opening surface of the acoustic control chamber 2 is arranged vertically in multiple stages. Cover with 3.

FIG. 3 is a perspective view of the wall member 3, and FIG. 4 is a longitudinal sectional side view thereof.

These wall members 3 have four side portions 4 at the top, bottom, left and right.
a, 4b, 4c, 4d, pair of left and right opposite sides 4
A quadrilateral bone frame 4 consisting of a reinforcing frame 4e that connects the vertical center portions of a and 4b, and a connecting frame 4f that connects a pair of upper and lower opposite side portions 4c and 4d.
On the front surface of this frame 4, there is a front outer plate 5 made of a thin metal plate such as aluminum and curved on the outer surface.
A back side outer plate 6 made of a flat metal perforated thin plate made of aluminum or the like is attached to the rear side of each of the two.

Two layers of sound absorbing materials 7a and 7b are filled between the outer panels 5 and 6. Here, the sound absorbing material 7a on the surface layer is made of foamed urethane to provide a heat insulating effect on the wall surface, and the sound absorbing material 7b on the back layer is made of glass wool, but the material of the sound absorbing material is not limited to these.
Further, the sound absorbing material does not necessarily have to be two layers, and may be a single layer or three or more layers.

A rotation center shaft 8 protruding outward in the opposite direction is provided at the center in the vertical direction of the pair of left and right opposite side portions 4a and 4b of the bone frame 4, and this rotation center shaft 8 is rotatably attached to the pillars 1 on both sides. By pivoting, the wall member 3 can be swung at the same angle from a vertical position to a horizontal position over an angular range of 90°.

Further, a packing material 9 is provided along the upper end edge of the upper side portion 4c of the upper and lower opposite side portions 4c and 4d of the frame 4, and when the wall member 3 is in the vertical position (solid line diagram in FIG. 2), Wall members 3 that are vertically adjacent to each other
The space between them is becoming sealed.

When the wall member 3 is placed vertically, the acoustic control room 2
The opening part is completely blocked by the wall member 3, and all the sounds in the room are diffusely reflected toward the room by the curved front outer panel 5. However, when the wall member 3 is tilted, the sound in the room is Only a portion of the light is reflected indoors,
The other part enters the sound control room 2.

Since a sound absorbing material 10 is pasted on the inner wall of the acoustic control room 2, most of the sound that enters here is absorbed by this sound absorbing material 10, and some of the sound reflected from the surface of the sound absorbing material 10 is further absorbed. Proceeding into the inside of the wall member 3 from the hole 11 of the back side outer plate 6 of the wall member 3, the sound absorbing material 7
Absorbed by a and 7b. The sound reflected by the back side outer plate 6 of the wall member 3 is attenuated by the interference of sound from inside the room, and then heads toward the sound absorbing material 10 of the acoustic control room 2. In this way, the sound that enters the sound control room 2 is rapidly absorbed, attenuated, and disappears. The silencing effect of the acoustic control room 2 changes depending on the degree of opening of the wall member 3, and as a result, the acoustic effects in the room can be varied in various ways.

In the wall member of the present invention, since the front outer panel is curved outward and the back outer panel is flat, it has the effect of reflecting sound at the front outer panel and absorbing sound at the back outer panel. Therefore, it absorbs sound reflected from adjacent wall members and further absorbs sound in the acoustic control room, making it easy to control wall reflection and sound absorption against reverberation. Further, since the wall member has two sides, a convex surface and a flat surface, and has a volume, resonance with respect to sound vibrations, particularly low frequencies, is suppressed, and there is no chatter vibration. Furthermore, since the wall member of the present invention is configured so that the space between vertically adjacent wall members is sealed,
Preferable as a wall member.

As explained above, in the present invention, the front outer surface plate of the wall member acts as a reflective surface that reflects sound, and the back outer surface plate and the sound absorbing material inside the wall member have a sound-deadening effect. This makes it possible to change the reflection rate of sound into the room and the absorption rate of indoor sound, making it possible to achieve various acoustic effects with a single wall surface.

In addition, since it has a quadrilateral bone frame, it has great strength and is difficult to bend or distort under its own weight even if it is relatively long, allowing for reliable sound effect adjustment over a long period of time. Can be done.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view of a wall surface, FIG. 2 is a vertical cross-sectional view taken along the - line, FIG. 3 is a perspective view of the wall member 3, and FIG. 4 is a vertical cross-sectional side view thereof. It is. 2...Acoustic control room, 3...Wall surface member, 4...Bone frame, 5...Front side external plate, 6...Back side external plate, 7
a, 7b...sound absorbing material, 4a, 4b...a pair of opposite sides, 8...rotation center axis, 4c...upper side part, 9
...Patsukin material.

Claims (1)

[Scope of utility model registration request] An acoustic control room with an open wall surface side is provided, and the opening surface of the acoustic control room is covered with wall members arranged vertically in multiple stages, and the wall members are set at the same angle over a 90° angle range from the vertical position to the horizontal position. The wall member has a front side outer plate curved outwardly on the front side of a quadrilateral bone frame on the upper, lower, left and right sides, and a back side outer plate made of a flat plate-like perforated plate on the rear side. A sound-absorbing material is filled between the two outer plates, and a rotation center axis protruding outward in the opposite direction is provided on a pair of opposing sides of the left and right bone frames. What is claimed is: 1. An acoustic device characterized in that a packing material is provided along the upper edge of the wall member so that the space between vertically adjacent wall members is sealed in the vertical position of the wall member.