JPH0712491Y2 - Wall structure with acoustic tiles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a wall structure using acoustic tiles in a concert hall, a theater or the like.

(Prior Art and Problems Thereof) In a concert hall or the like, it is desirable that sound is transmitted almost uniformly in the entire area of the hall due to acoustic effects, and for that reason, acoustic tiles are often attached to the wall surface. In this case, the sound from the stage side needs to be reflected and diffused on the wall surface to average the room sound pressure, and the reflected sound volume needs to be reduced in the rear seat area. Therefore, conventionally, about 80% of the front wall of the concert hall is provided with acoustic tiles for reflection and diffusion, and about 20% of the rear wall is a sound absorbing wall made of glass wool or the like.

And as a conventional acoustic tile, as shown in FIG.
This tile is used as shown in (b).
51 is formed in a rectangular shape having a raised portion 51a formed in a raised shape along the central portion in the longitudinal direction thereof and flat portions 51b, 51b formed at both end portions thereof. The sheets were arranged to form a wall surface for reflection and diffusion.

Since there are no tiles on the rear wall for sound absorption, the overall appearance of the concert hall is different between the sound absorbing wall surface and the reflective wall surface, and there is no uniformity in the wall surface of the hall. There was a problem that the aesthetics of the hall was spoiled.

(Means for Solving the Problem) The present invention has been devised in view of the above-mentioned conventional problems, and the gist thereof is that it is formed in a rectangular shape, and a ridge-like ridge is formed in the central portion in the longitudinal direction. A tile is formed on the wall surface of the building by forming a flat part lower on both side edges of the raised part and forming a slit part cut out in a concave shape from the end face side in the longitudinal direction of the flat part. By fixing the short side between the aluminum rails arranged side by side at intervals and forming a sound absorbing space in which the sound absorbing gap by the slit portion is formed between the tiles and the building wall, a sound absorbing space communicating with the sound absorbing gap is formed. is there.

(Operation) When a large number of tiles are lined up between aluminum rails on the wall surface of a building to form a wall surface, a sound absorbing gap is formed between the tiles due to the slit portion formed on the end surface of the tile. Sound is absorbed in the sound absorbing space formed on the back side of the tile through the wall, and a good sound absorbing wall surface can be configured.

In particular, if glass wool or the like is provided in the sound absorbing space, the sound passing through the sound absorbing gap is well absorbed by the glass wool or the like, and the sound absorbing effect can be enhanced.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an acoustic tile of this example, in which (a) is its plan view and (b) is its side view.

In the figure, the tile 1 is formed in a rectangular shape, and a ridge 1a is formed in a ridge shape in the longitudinal center thereof.
Further, flat portions 1b, 1b are formed lower on both side edges of the raised portion 1a. Further, slit portions 1c, 1c, which are cut out in a concave shape from the end face side, are formed in the central portion in the longitudinal direction of the flat portions 1b, 1b. In this example, the overall length a of the tile 1 is 227 mm. The width b is 60 mm, the height e of the raised portion 1a is 19 mm, the length c of the slit portion 1c is 159 mm, and the depth d of the slit portion 1c is 4 mm.
formed to mm.

The tiles 1 thus formed can be arranged in a line along a wall surface of a concert hall or the like as shown in FIGS. 2 and 3, for example. That is, on the square pipe stud 2 which is vertically fixed to the wall surface side of the concert hall, a large number of aluminum rails 3 are provided at predetermined intervals in the horizontal direction.
A plurality of tiles 1 of this example can be arranged along the aluminum rails 3 between the aluminum rails 3 and 3 in parallel. In that state, as shown in FIG. 2, the slit portions 1c, 1c of the adjacent tiles 1, 1 are aligned with each other, and the sound absorbing gap S is provided between the tiles 1, 1 in the aligned slit portions 1c, 1c. It is formed.

As shown in FIG. 4, as described above, a large number of tiles 1 are installed inside the wall W of the building of the concert hall through the square pipe studs 2 and the aluminum rails 3, and the sound absorbing gap S is provided in the rear area of the concert hall. It is possible to form the sound absorbing wall surface portion A having a suitable length to a desired length, and in succession to this sound absorbing wall surface portion A, a reflective wall surface portion B can be formed on the front area wall surface of the concert hall. The tiles 51 as shown in FIG. 8 described above are installed on the reflection wall surface portion B without a gap. In FIG. 4, the sound absorbing wall surface portion A
A considerable air layer is formed on the back side of the sound absorption space K. On the back surface side of the aluminum rail 3 in the sound absorbing space K, a sound absorbing material such as glass wool can be arranged by means such as sticking if necessary. Further, the back surface side of the reflection wall surface portion B can be firmly formed with concrete or the like.

The estimated data of the sound absorption coefficient of the sound absorbing wall surface portion A is shown in FIG.

In FIG. 5, when the thickness of the sound absorbing space K is set to 170 mm, the curve shown by the solid line is the sound absorbing coefficient curve when glass wool is lined in the sound absorbing space K, and the broken line in the figure shows that the glass wool is not lined. It is a sound absorption coefficient curve in the case.

As shown in FIG. 4, the sound absorbing wall surface portion A is formed on the rear area wall surface of the concert hall, and the reflective wall surface portion B is formed on the front area wall surface. Sound is absorbed and a good sound field can be obtained, and in the front seat, the sound is reflected by the reflective wall surface portion B,
Sound distribution is made uniform throughout the concert hall, and good acoustic effects can be obtained.

Further, in this example, the reflection tile 51 installed on the reflection wall surface portion B
Since the tile 1 installed on the sound absorbing wall surface portion A is formed to have substantially the same planar shape, the sound absorbing wall surface portion A and the reflecting wall surface portion B have substantially the same design, and the entire wall surface has a neat appearance. The shape is exhibited, and unlike the conventional case, there is no extreme difference in design between the sound absorbing portion and the reflecting portion, and the beauty of shaping of the entire hole can be produced.

6 and 7 show modified examples of the tile 1,
In the figure, the slit portion 1c is formed on one side surface side. Further, as shown in FIG. 7, the raised portion 1a is formed in a circular arc shape so as to have a better diffuse reflection function in the high frequency range.

As described above, the shape of the raised portion of the tile 1 can be appropriately changed to a mountain shape or the like, and the length and depth of the slit portion 1c can be changed appropriately. The sound absorbing wall surface portion A can be formed by alternately using the tile 1 shown and the tile 1 shown in FIG. 6, and the sound absorbing coefficient can be changed according to the situation.

(Effects of the Invention) The wall surface structure of the acoustic tile of the present invention is formed in a rectangular shape, a ridge-like ridge is formed in the central portion in the longitudinal direction, and the edge portions on both sides of the ridge are lower and flat. The tile is formed by forming slits, which are cut out in a concave shape from the end face side in the longitudinal direction of the flat portion, and the short side is fixed between aluminum rails arranged side by side on the building wall surface at predetermined intervals. The tiles are arranged between the aluminum rails on the building wall by forming a sound absorbing space communicating with the sound absorbing gap between the sound absorbing wall and the building wall where the sound absorbing gap is formed by the slits between the tiles and the building wall. For example, a sound absorbing gap due to the slit part is naturally formed between each tile, and on the shaped sound absorbing wall surface, it is possible to guide the sound into the sound absorbing space on the back side through this sound absorbing gap and absorb the sound. Presenting sucking The sound absorbing wall surface can be a sound absorbing wall surface, which has good mounting strength and has no protrusion.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention. FIG. 1 (a) is a plan view of an acoustic tile, FIG. 1 (b) is a bottom view thereof, and FIG.
FIG. 3 is a side view showing the tiles arranged in a row on the wall surface, FIG. 3 is a side view showing the tiles arranged in a row, FIG. 4 is a sectional view of the wall of the concert hall, and FIG. 5 is a sound absorption coefficient data curve. Fig. 6 is a plan view showing a modification of the tile, Fig. 7 is a side view showing a modification of the tile, Fig. 8 (a) is a plan view of a conventional reflective acoustic tile, and Fig. 8 ( (B) is a bottom view of the same. 1 …… Tile, 1a …… Raised part 1b …… Flat part, 1c …… Slit part 2 …… Square pipe stud, 3 …… Aluminum rail 51 …… Tile A …… Sound absorbing wall part, B …… Reflecting wall part K: Sound absorbing space, S: Sound absorbing gap

Claims (1)

[Scope of utility model registration request] 1. A rectangular shape, a ridge-like ridge is formed at a central portion in a longitudinal direction thereof, and flat portions are formed on both side edges of the ridge so as to have a lower level. Is a tile with slits cut out in a concave shape from the end face side, and the short side is fixed between aluminum rails arranged side by side at a predetermined interval on the building wall, and the sound absorbing gap due to the slits between the tiles. A wall structure made of acoustic tiles, characterized in that a sound absorbing space communicating with the sound absorbing gap is formed between the sound absorbing wall forming the wall and the wall of the building.