JPS6177097A - Sound adjuster - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field] The present invention provides a sound device that can be attached to a ceiling or wall to adjust the acoustics. 11 is related to the adjustment device.

[Background I Support J Conventionally, in listening rooms, etc., sound-absorbing materials, reflective materials, etc. are attached to the ceiling and walls to improve the acoustic effect, but since these are fixed to the interconnections in the room, It is not easy to replace sound absorbing and reflective materials.
It was not possible to easily adjust the sound.

E. Purpose of the Invention] The present invention has been made in view of the above points, and provides an acoustic adjustment device that can freely adjust sound absorption, reflection, diffusion, etc. and is easy to install indoors for acoustic adjustment. The purpose is to provide

[Disclosure of the Invention] That is, the sound LIW adjustment device of the present invention has a plurality of rotating bodies 3 arranged side by side in a box body 14 having an opening 13, and a shaft portion provided at both ends of the rotating bodies 3. 4 is rotatably pivotally attached to the inner surface of the box body 14, and the reflective surface 1 is formed on a part of the outer surface around the pongee of the rotating body 4, and the sound absorbing surface 2 is formed on the other part. The sound can be adjusted by rotating the rotating body 3 to direct the reflective surface 1 toward the indoor side or the sound absorbing surface 2 toward the indoor side, and also to adjust the sound by rotating the rotating body 3. By attaching it to a surface or a wall, it is easy to install and achieves the above purpose.

The present invention will be described in detail below based on examples. As shown in FIGS. 1 and 2, the reflective material 5 made of wood, plastic, metal, etc. is integrally bent in a dogleg shape, and the outer surface of the reflective material 5 has two sides. A reflective surface 1.1 is formed. The interior of the reflective material 5 surrounded by these two reflective surfaces 1.1 is filled with a sound absorbing material 6 made of glass wool, rock '7-ru, foamed T-rethane, etc., and the surface of the sound absorbing material 6 is A sound-absorbing material cover 7 made of breathable cloth, metal plate, plastic or the like is attached to the sound-absorbing material 6, and the outer surface of the sound-absorbing material 6 serves as a sound-absorbing surface 2. A material 8 is fixed to the inner edge of the reflective material 5 in the longitudinal direction so that the sound absorbing material 6 does not come off, and the cover 7 is attached to the reflective material 5. The L-reflector 1 and the sound-absorbing surface 2 have the same shape, and the rotating body 3 is triangular prism-shaped with an equilateral triangle in cross section.
is formed. A pongee n9 is inserted into the interior of the rotating body 3, and the shaft portion 4 protrudes outward from both ends of the rotating body 3. In this way, the shape r! As shown in FIGS. 3 and 4, the rotary bodies 3 that are rotated are arranged side by side with a plurality of gaps in between in a box body 14 whose interior surface is open, and the shaft portion 4 is mounted on the inside surface of the box body 14. It can be freely attached to the shaft. Each time (the body 3 may be rotated manually, but it may also be rotated electrically as shown in FIG. 5). A pulley 15 is fixed to the shaft portion 4, and a step motor 16 attached to a box body 14 and the pulley 15 are connected by a belt 17, so that the rotating body 3 is rotated by the drive of the step motor 16. Inside 18 is a controller, and one is a switch.In the above embodiment, three rotating bodies 3 are connected to the box 14.
Although they are arranged in parallel within the interior, the present invention is not limited to this, and two or four or more may be arranged.

Thus, the box body 14 has a plurality of rotating bodies 3 disposed therein.
is attached to the indoor ceiling or wall so that the opening 13 faces indoors, as shown in Figures 6(,) to (d).
As shown in the figure, the sound can be adjusted by rotating the rotating body 3 and changing its direction. In other words, as shown in Fig. 6(&), when the sound absorbing surfaces 2 of each rotary body 3.3.3 are oriented parallel to the indoor side, the sound absorbing state is created and a dead sound field can be created. 6. As shown in Figure (b), rotate each rotating body 3.3.3 slightly and tilt the sound absorbing surface 2.
When the reflective surface 1 and the reflective surface 1 are directed toward the indoor side, a reflected sound field with moderate sound absorption can be created. Furthermore, Fig. 6(c)
As shown in 6I2I(d), when the two incident planes 1.1 are tilted and directed toward the indoor side, it becomes a diffusion state and a live diffusion state can be created. If the reflecting surface 1 is further rotated to face parallel to the indoor fill, it will be in a reflecting state and a live sound field can be created.

In addition, in the above-mentioned Example ``A'', each rod 3 was formed in the shape of a triangular prism, but as shown in FIG. It may be formed into a rectangular prism shape (Iη), or it may be formed into a rectangular prism shape (Iη) in which two adjacent sides are formed of a reflective material 5 and the other side is formed of a sound absorbing material 6, as shown in FIG. As shown in Figure (d), hη may be formed of a cylindrical column with one side made of a reflective material 5 and the pond surface made of a sound absorbing material 6.

[Effect of the Invention 1 As described above, the present invention provides a method in which a plurality of rotating bodies are arranged side by side in a box body having an opening, and the shafts provided at both ends of the rotating bodies are freely movable on the inner surface of the box body. The rotating body is pivoted, and a reflective surface is formed on a part of the outer surface around the pongee, and a sound-absorbing surface is formed in the pond.By rotating the rotating body, the sound-absorbing surface and reflective surface are exposed to the indoor side, and sound absorption is achieved. It is possible to create sound fields in the state, diffuse state, and reflected state, and the acoustic illumination! I can be easily performed, and since multiple rotating bodies are installed side by side inside the box,
The acoustics can be easily adjusted by attaching the box to the ceiling or wall of the room, and the construction is easy.

[Brief explanation of drawings]

1I2I is a partially cutaway perspective view of a rotating body according to an embodiment of the present invention, tj42 is a sectional view of the same, FIG. 3 is a partially cutaway perspective view of the same, [4 is a sectional view of the same, and 5 The figure is a partially cutaway perspective view of another embodiment of the same as above, Figures 6(a) to (d) are explanations for the same as above, and Figures i7(a) to (dl each represent a rotating body with a different cross-sectional shape. 1 is a reflecting surface, 2 is a sound absorbing surface, 3 is a rotating body, 4 is a shaft portion,
13 is an opening, and 14 is a box. Agent Patent attorney Ishi 1) Ai Nanami 1 Figure 2 Figure 3 Figure 4 Figure 6 Procedural amendment (voluntary) November 19, 1980 Showa 594 + - Patent application No. 199'? No. 30 2, Invention
Name of Sound Adjustment Device 3, Relationship to the hli correction case Patent Applicant Location Bold Kadoma 1048, Kadoma City, Osaka Name (583) Matsushita Electric Works Co., Ltd. Representative Iku Kobayashi 4, Agent 5, Amendment order Corrected application number as per the date attached
Insert the following sentence next to [Mono deru] on page 5, line 11 of the book fB. "Next, Figure 8 shows the measurement results for each sound absorption property in the sound absorption state, diffusion state, reflection state shown in Figure 6, and in the state where the opening 13 of the box body 14 is masked. Middle A
4 shows sound absorption properties in the sound absorption state, B in the diffusion state, C in the reflection state, and D in the masking state. It is confirmed that the sound absorption properties are high overall in the sound absorption state shown by A, followed by the diffusion state shown by B, and then the high sound absorption properties in the reflection state shown by C. Also A, B, C
It can be seen that both have particularly high sound absorption coefficients in the low frequency range of 160-250Hz. This is because the space between the inside of the box 14 and the triangular prism rotating body 3 functions as a resonator, and is therefore highly effective in preventing so-called booming. J 2, same as above, page 6, line 20, “is, before J, [,
Figure 8 is a diagram showing the sound quality when using the triangular prism rotating body of the present invention. 3. Add the attached MA diagram to the attached drawings.

Claims (1)

[Claims] (1) A plurality of rotating bodies are arranged side by side in a box having an opening, and shafts provided at both ends of the rotating bodies are rotatably pivoted to the inner surface of the box, and the outer surface around the axis of the rotating bodies is 1. An acoustic adjustment device comprising: a reflecting surface formed in one part and a sound absorbing surface formed in another part.