JP7444546B2 - Acoustic adjustment panel and indoor structure in which it is installed - Google Patents

Description

Application of Article 30, Paragraph 2 of the Patent Act 1. Published by publication in TCM Journal 2018 summer, No. 47, page 5, published on July 20, 2018. 2. Published by publication in ACe Construction Industry, June 2018 issue, pages 36-41, published on June 25, 2018. 3. Published by publication in Toda Giho, Kenchiku No. 146, pages 70-77, published on September 14, 2018. 4. Published as a presentation at the 64th Architectural Production Technology Research Conference held at the Architectural Center on October 16, 2018. 5. Published on the orchestra room page (http://www.tokyo-ondai.ac.jp/d/orchestra-room.html) in the new campus project section of the Tokyo College of Music website on March 14, 2019. Published by. 6. It was made public by providing explanations and distributing materials at the "Tokyo College of Music New Campus" tour held on January 8, 24, and 25, 2019 at the Nakameguro/Daikanyama campus of Tokyo College of Music. 7. It was made public on March 30, 2019 through explanations and materials distributed at the Tokyo College of Music Nakameguro/Daikanyama campus tour held at the Nakameguro/Daikanyama campus of the Tokyo College of Music. 8. The facility, which was constructed on January 31, 2019, will be opened to the public upon completion and handed over to the Tokyo College of Music.

The present invention is an acoustic system installed on the ceiling, wall, etc. of a room in order to enhance or improve the indoor acoustic environment in facilities such as concert halls, movie theaters, theaters, music lesson rooms, broadcasting studios, and audiovisual rooms. This relates to the adjustment panel and the indoor structure in which it is installed.

Conventionally, in facilities such as concert halls, movie theaters, theaters, music lesson rooms, broadcasting studios, and audiovisual rooms, especially in facilities where the indoor acoustic environment is important, it has been necessary to monitor the volume level, frequency characteristics, etc. of the sound sources generated in the room. Taking this into account, improve or improve the indoor acoustic environment by appropriately adjusting the sound absorption, reflection, and diffusion characteristics of ceiling surfaces, walls, etc., and appropriately preventing acoustic disturbances such as reverberation, flutter echo, and booming. That's what I do.

For example, a high-frequency sound absorption panel 4 that absorbs high-frequency sound, a mid-range sound absorption panel 5 that absorbs medium-frequency sound, and sound diffusion panels 6 and 7 that reflect and diffuse sound at various angles are installed in the room 1. A method has been proposed in which the room 1 is adjusted to an appropriate acoustic environment by appropriately selecting and arranging them vertically and horizontally on the wall surface 3 (see Patent Document 1).

In addition, the space defined by the facing perforated board materials 1 and 1 is filled with the nonwoven fabric member 2 to constitute an acoustic adjustment panel material adjusted to absorb or reflect sound in a predetermined frequency band, and to A method has also been proposed in which a room is adjusted to an appropriate acoustic environment by appropriately arranging this acoustic adjustment panel material on the wall surface W (see Patent Document 2).

Japanese Patent Application Publication No. 06-158750 Utility model registration No. 3135263

In the method of Patent Document 1, the high-frequency sound absorbing panel 4, the mid-range sound absorbing panel 5, and the sound diffusion panels 6, 7 are constructed by stretching a nonwoven fabric 4c and a plate-like body 5b on their surfaces. Although it is possible to change the sound absorption, reflection and diffusion performance by appropriately selecting the internal structure and the materials of the non-woven fabric 4c and the plate-shaped body 5b, this requires the production of many types of panels. Furthermore, it has been difficult to subtly change these performances.

On the other hand, in the method of Patent Document 2, by appropriately selecting the material of the nonwoven fabric member 2 to be filled, the material of the perforated board material 1, the diameter and pitch of the hole portions 11, etc., the sound absorption and reflection of the acoustic adjustment panel material can be improved. Although it is possible to change the diffusion performance, in order to do so, as in the method of Patent Document 1, many types of acoustic adjustment panel materials must be manufactured, and it is difficult to subtly change their performance. Met.

The present invention was made in view of such conventional problems, and it is possible to appropriately and subtly change sound absorption, reflection, and diffusion performance without having to create many types of acoustic adjustment panels. The purpose of this invention is to provide an acoustic adjustment panel that can

Another object of the present invention is to provide an indoor structure in which the indoor acoustic environment can be optimized more than ever before by installing this acoustic adjustment panel.

In order to achieve the above object, the tone adjustment panel of the present invention is an acoustic adjustment panel configured by punching holes in a flat plate material, in which the flat plate material is provided with holes along the length of the flat plate material, except for both ends in the longitudinal direction. A plurality of band-shaped perforated regions with different widths are formed along the entire length in the longitudinal direction, and a plurality of band-shaped non-porous regions with different widths are formed throughout the length direction, and between the perforated regions. It is characterized in that the non-porous region is interposed therebetween.

Here, the perforated region is characterized in that it is composed of a plurality of types of perforated arrays having different hole diameters.

Further, in the plurality of types of the perforated arrays, the holes in each of the perforated arrays are formed at the same pitch.

The indoor structure of the present invention is characterized in that the acoustic adjustment panel is appropriately installed on the ceiling or wall of the room.

Here, the acoustic adjustment panel may be installed upside down.

Furthermore, the acoustic adjustment panel may be connected to an adjacent acoustic adjustment panel at a predetermined inclination angle.

According to the acoustic adjustment panel of the present invention, sound absorption, reflection, and diffusion performance can be appropriately and subtly changed without producing many types of acoustic adjustment panels.

Furthermore, in the plural types of perforated arrays, if the holes in each perforated array are formed at the same pitch, there is no need for a special manufacturing process, and it can be manufactured in the same manner as before using a conventional drilling device. I can do it.

According to the indoor structure of the present invention, by installing the acoustic adjustment panel of the present invention on the ceiling surface, wall surface, etc. of the room, the indoor acoustic environment can be optimized like never before.

Furthermore, when the acoustic adjustment panel of the present invention is installed on a ceiling surface, wall surface, etc., compared to conventional acoustic adjustment panels, the number of holes is relatively small and the holes are not formed all over the surface, so the appearance is improved. It gives an extremely simple impression and can improve the interior design as well.

(A) is a front view of one embodiment of the acoustic adjustment panel of the present invention, and (B) is a front view of another embodiment. It is an explanatory view showing the cross-sectional structure of the flat plate material of the acoustic adjustment panel. FIG. 2 is a sectional view showing a state in which the acoustic adjustment panel shown in FIG. 1 is installed on a wall surface. It is a graph which shows the relationship of the sound absorption coefficient with respect to the frequency of the sound in the conventional acoustic adjustment panel. It is a graph showing the relationship between sound absorption coefficient and sound frequency in the acoustic adjustment panel of the present invention. It is a graph showing the relationship between the octave band center frequency of sound and the average sound absorption coefficient in the lesson room. FIG. 2 is an explanatory diagram showing a method of drilling a hole in a conventional acoustic adjustment panel using a drilling device. FIG. 3 is an explanatory diagram showing a method of drilling holes in the acoustic adjustment panel of the present invention using a drilling device. FIG. 2 is an explanatory diagram of a case where a room with an optimal acoustic environment is realized by configuring a wall surface using a conventional acoustic adjustment panel. FIG. 2 is an explanatory diagram of a case where a room with an optimal acoustic environment is realized by configuring a wall surface using the acoustic adjustment panel of the present invention. FIG. 2 is an explanatory diagram for optimizing the indoor acoustic environment when configuring a wall surface using the acoustic adjustment panel of the present invention. (A) is a front view of one embodiment of a conventional acoustic adjustment panel, and (B) is a front view of another embodiment.

Preferred embodiments of the acoustic adjustment panel of the present invention will be described in detail below with reference to the drawings.

As shown in FIG. 1, the acoustic adjustment panel 1 of the present invention is constructed by forming a perforated area 3 having a perforated array in a strip shape in a predetermined pattern on a rectangular flat plate material 2 having an appropriate size, and also forming a perforated region 3 having a perforated array in a strip shape in a predetermined pattern. Region 4 is formed.

Here, the flat board material 2 may be a veneer made of natural wood such as larch, Japanese cedar, Japanese china, Tamomasa, Naramasa, or Sakura, MDF (medium density fiberboard), or a laminated board of these as shown in FIG. Plywood can be used.
Furthermore, although the sound absorption performance is slightly inferior, it is also possible to use a veneer made of synthetic resin or metal, or plywood.

In this example, the dimensions of the flat plate material 2 are 9 mm in thickness, 600 mm in height, and 900 mm, 1200 mm, 1500 mm, 1800 mm, 2100 mm, and 2400 mm in length.
However, the present invention is not necessarily limited to this, and flat plate members 2 of various sizes can be employed as necessary.

Further, in this embodiment, in the perforated array extending in the length direction forming the perforated region 3, the perforated holes 5 have diameters of 6 mm, 8 mm, and 9 mm, and a pitch of 20 mm in the length direction. formed something.
However, the hole portions 5 are not necessarily limited to this, and holes 5 having various diameters and pitches can be formed as necessary.

Furthermore, in order to improve nonflammability, a flame retardant paint may be applied to the surface of the flat plate material 2.

In the conventional acoustic adjustment panel 101, for example, as shown in FIG. 12(A), large-diameter holes 105A with a diameter of 9 mm are uniformly formed at a pitch of 25 mm on substantially the entire surface area of a rectangular flat plate 102. Alternatively, as shown in FIG. 12(B), an acoustic adjustment panel 101B was constructed by uniformly forming holes 105B with a small diameter of 6 mm at a pitch of 25 mm.
That is, in the conventional acoustic adjustment panel 101, holes 105 are uniformly formed at a predetermined diameter and a predetermined pitch over substantially the entire surface area of a flat plate material 102.

On the other hand, as shown in FIG. 1, the acoustic adjustment panel 1 of the present invention has holes 5A, 5B with large, medium, and small diameters of 9 mm in diameter, 8 mm in diameter, and 6 mm in diameter on the surface of a rectangular flat plate material 2. Perforated regions 3A, 3B, and 3C formed in a band shape are formed from a plurality of perforated arrays in which holes 5C are bored at a pitch of 20 mm in the length direction, and a non-perforated region formed in a band shape without forming holes. 4 is divided and formed.

That is, the acoustic adjustment panel 1 of the present invention is an acoustic adjustment panel constructed by perforating a flat plate material, in which a perforated region 3 having a perforated array in a band shape is formed in the flat plate material 2 in a predetermined pattern. , is characterized in that the non-porous region 4 is formed in a band shape.

The perforated area 3 is composed of a plurality of types of perforated arrays in which the diameters of the perforated parts 5 are different, and in particular, in the plural types of perforated arrays, the perforated parts 5 in each perforated arrangement are made longer. It is characterized by being formed at the same pitch in the horizontal direction.

Specifically, as shown in FIG. 2, the acoustic adjustment panel 1A according to one embodiment of the present invention is made of plywood with a thickness of 9 mm, which is made of plywood made by laminating a Chinese china material 2A and cedar materials 2B and 2C, as shown in FIG. The height is 600 mm and the length is 1500 mm.

As shown in FIG. 1(A), on the surface of the rectangular flat plate material 2, perforated regions 3A1 and 3A2 in which holes 5A with a large diameter of 9 mm are formed in a belt shape at a pitch of 20 mm in the longitudinal direction, and a medium diameter of 8 mm are formed. perforated regions 3B1, 3B2 in which hole portions 5B are formed in a strip shape with a longitudinal pitch of 20 mm; perforated regions 3C1, 3C2 in which hole portions 5C of small diameter 6 mm are formed in a strip shape with a longitudinal pitch of 20 mm; The non-porous regions 4A, 4B, 4C, 4D, and 4E are formed in a predetermined pattern.

Further, as shown in FIG. 2, the acoustic adjustment panel 1B according to another embodiment of the present invention is also made of plywood with a thickness of 9 mm, and is made of plywood made by laminating a china material 2A and cedar materials 2B and 2C, similarly to the acoustic adjustment panel 1A. , a flat plate material 2 with a height of 600 mm and a length of 1500 mm is used.

As shown in FIG. 1(B), on the surface of the rectangular flat plate material 2, perforated regions 3A1 and 3A2 are formed in which holes 5A with a large diameter of 9 mm are formed in a band shape at a pitch of 20 mm in the longitudinal direction, and a medium diameter of 8 mm. perforated regions 3B1, 3B2, 3B3 in which hole portions 5B are formed in a strip shape with a longitudinal pitch of 20 mm, perforated regions 3C1, 3C2 in which hole portions 5C with a small diameter of 6 mm are formed in a strip shape with a longitudinal pitch of 20 mm, and , band-shaped non-porous regions 4A, 4B, 4C, 4D, and 4E are formed in a predetermined pattern.

As shown in FIG. 3, the acoustic adjustment panel 1 of the present invention is installed on a wall 11 of a music lesson room or the like via a support member 12, and defines a space 13 between the wall 11 and the acoustic adjustment panel 1. At the same time, a sound absorbing member 14 is arranged on the back surface of the acoustic adjustment panel 1 for use.

Therefore, the sound in the predetermined frequency band is reflected and diffused on the surface of the acoustic adjustment panel 1, and the sound in the predetermined frequency band passes through the hole 5 and is absorbed by the space 13 and the sound absorbing member 14.

Here, as shown in FIGS. 12A and 12B, the conventional acoustic adjustment panel 101 has holes 105 uniformly formed at a predetermined diameter and a predetermined pitch over substantially the entire surface area of a rectangular flat plate material 102. Since it is a formed object, its sound absorption, reflection, and diffusion properties vary depending on the material of the flat plate 102 and the diameter and pitch of the holes 105.

However, in one acoustic adjustment panel 101, the performance is approximately uniform over the entire surface area, and as shown in FIG. becomes.

On the other hand, the acoustic adjustment panel 1 of the present invention has large, medium, and small diameter holes 5A, 5B, and 5C on the surface of a rectangular flat plate material 2, as shown in FIGS. 1(A) and 1(B). Since a plurality of perforated regions 3A, 3B, 3C formed in a strip shape at a predetermined pitch in the length direction and a plurality of non-porous regions 4 formed in a strip shape are formed in a predetermined pattern, the sound absorption, reflection and Diffusion performance and the like can be varied in various ways depending on the material of the flat plate material 2, the diameter and pitch of the holes 5, and the patterns of the perforated regions 3 and non-perforated regions 4.

In one acoustic adjustment panel 1, each of the perforated regions 3A, 3B, 3C and the non-perforated region 4 has different performance, and as shown in FIG. It exhibits a characteristic having a high value in the band.

Furthermore, the relationship between the sound absorption coefficient and the sound frequency will be completely different depending on the acoustic adjustment panels 1A and 1B with different patterns. , as shown in FIG. 6, the acoustic environment in a room such as a lesson room can be optimized to an unprecedented degree.

When producing a conventional acoustic adjustment panel 101, for example, as shown in FIG. 22, 22, . . . are moved up and down intermittently to form holes uniformly over substantially the entire surface area of the flat plate material 102.

On the other hand, when producing the acoustic adjustment panel 1 of the present invention, as shown in FIG. 8, the drills 22, 22, . If the diameter of the drill 22 at an appropriate position is changed to a different diameter while detaching, the drills 22, 22, etc. are intermittently moved up and down using the same manufacturing method as in the conventional method, and the flat plate material 2 is properly drilled. The perforated regions 3 and the non-porous regions 4 can be formed in a pattern.

Therefore, the acoustic adjustment panel 1 of the present invention does not require any special manufacturing process and can be manufactured in the same manner as before using the conventional punching device 21, so that the manufacturing cost will not be high. .

When optimizing the acoustic environment in a room such as a music lesson room, the conventional acoustic adjustment panel 101 only exhibits simple sound absorption, reflection, and diffusion performance. As shown, many types of sound adjustment panels 101A, 101B, and 101C had to be used, and moreover, delicate sound adjustment was difficult.

On the other hand, according to the acoustic adjustment panel 1 of the present invention, in one acoustic adjustment panel 1, the perforated area 3 and the non-porous area 4 have different performances, and can exhibit complex sound absorption, reflection, and diffusion performance. In addition, since the sound absorption coefficient with respect to the sound frequency exhibits characteristics of having good values in a wide frequency band, the acoustic environment can be optimized even if a small number of types of acoustic adjustment panels 1 are used, as shown in FIG. It also allows for subtle acoustic adjustments.

Further, according to the acoustic adjustment panel 1 of the present invention, as shown in FIG. 10, by using one acoustic adjustment panel 1 upside down, each acoustic adjustment panel installed upside down can be 1 can also exhibit different sound absorption, reflection, and diffusion performance, so if these points are taken into consideration, it becomes possible to perform extremely multifaceted and delicate acoustic adjustments.

Furthermore, as can be easily understood by comparing FIG. 9 and FIG. Therefore, it gives an extremely complicated appearance.

On the other hand, in the acoustic adjustment panel 1 of the present invention, the number of holes is relatively small and does not cover the entire surface, so it gives an extremely simple impression on the exterior and improves the design of the wall and room. But it can be made better.

Furthermore, as shown in FIG. 11, if a plurality of acoustic adjustment panels 1 of different lengths are used and adjacent acoustic adjustment panels 1 are connected at a predetermined angle of inclination, sound absorption, reflection, and diffusion can be adjusted appropriately. This allows the acoustic environment to be further optimized.

Furthermore, when making delicate sound adjustments, it is also possible to replace only the sound adjustment panel 1B with the perforation pattern shown in FIG. 11(A) with the sound adjustment panel 1C with the perforation pattern shown in FIG. 11(B). good.

Therefore, by installing the acoustic adjustment panel of the present invention on the ceiling surface, wall surface, etc. of a room, it is possible to realize an indoor structure that can optimize the indoor acoustic environment like never before.

In the above embodiment, two types of acoustic adjustment panels 1A and 1B were described in which the perforated area 3 and the non-perforated area 4 were formed with a predetermined perforation pattern, but the perforated area 3 and the non-perforated area 4 were formed with other appropriate perforation patterns. Of course, the acoustic adjustment panel 1 may be configured with the non-porous area 4 formed therein.

Further, the material and dimensions of the flat plate material 2 of the acoustic adjustment panel 1, the diameter and pitch of the hole portions 5, etc. are not limited to those in the above embodiments, and a more appropriate acoustic adjustment panel 1 can be obtained by appropriately selecting them. It can also be manufactured.

Further, in the above embodiment, the case where the acoustic adjustment panel 1 is installed on the wall surface of the music lesson room has been described, but it may be installed not only on the wall surface but also on the ceiling surface, column surface, etc.
Furthermore, as mentioned above, it can be applied not only to music lesson rooms, but also to facilities where it is necessary to improve or improve the indoor acoustic environment, such as concert halls, movie theaters, theaters, music lesson rooms, broadcasting studios, audiovisual rooms, etc. Of course.

1 Acoustic adjustment panel 1A, 1B Acoustic adjustment panel 2 Flat plate material 3 Perforated area 3A, 3B, 3C Perforated area 4 Non-porous area 4A, 4B, 4C, 4D, 4E Non-porous area 5 Hole 5A, 5B, 5C Hole Department

Claims (6)

In an acoustic adjustment panel constructed by drilling holes in a flat plate,
A plurality of band-shaped perforated regions having different widths are formed in the flat plate material over the entire length thereof, excluding both ends in the length direction, and a plurality of perforated regions having different widths are formed over the entire length in the length direction. An acoustic adjustment panel characterized in that a band-shaped non-porous region is formed, and the non-porous region is interposed between the perforated regions. 2. The acoustic adjustment panel according to claim 1, wherein the perforated region is comprised of a plurality of types of perforated arrays having different hole diameters. 3. The acoustic adjustment panel according to claim 2, wherein in a plurality of types of the perforated arrays, the holes in each perforated array are formed at the same pitch. An indoor structure characterized in that the acoustic adjustment panel according to any one of claims 1 to 3 is appropriately installed on a ceiling surface or a wall surface of a room. 5. The indoor structure according to claim 4, wherein the acoustic adjustment panel is installed upside down. 6. The indoor structure according to claim 4, wherein the acoustic adjustment panel is connected to an adjacent acoustic adjustment panel at a predetermined inclination angle.

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