JP2021165522A - Wall structure - Google Patents

Abstract

To provide a wall structure preventing a conversation content from being transmitted outside without increasing a surrounding environment noise.SOLUTION: The wall structure according to one embodiment of the invention for dividing an indoor space comprises a plurality of panel members having a sound collection part reflecting a sound wave incident from forward to be converged at a front surface, and the plurality of panel members generate one group of panel members by being arranged in parallel so that lateral surfaces of the sound collection part contact each other, and a sound collection shape of the sound collection part is a quadratic curve rotary surface or a part of the quadratic curve rotary surface.SELECTED DRAWING: Figure 1

Description

The present invention relates to a wall structure.

In recent years, it has been practiced to provide a meeting booth for meetings, business negotiations, etc. by dividing an indoor space such as an office by a partition. By providing a meeting booth with partitions in this way, it is possible to efficiently use the indoor space and enhance the vitality of the entire indoor space.

The meeting booth is desired to exist near an indoor office space or the like from the viewpoint of efficient use of the indoor space and activation of the indoor space. Further, it is desired that a sufficient number of these meeting booths exist from the above viewpoint, and therefore each meeting booth is being reduced in size.

However, when the size of the meeting booth is reduced, there is a high possibility that the conversation in the meeting booth will be leaked to the outside of the meeting booth. From this point of view, a technique has been put into practical use today in which a speaker is provided in the partition and a masking sound is emitted so that the conversation in the meeting booth cannot be heard outside (Japanese Patent Laid-Open No. 2012-82585). See Gazette).

Japanese Unexamined Patent Publication No. 2012-82585

However, when the masking sound is used as described in the above-mentioned publication, there arises a problem that the ambient noise becomes large. In other words, when multiple meeting booths are provided adjacent to each other, the conversation in the meeting booth becomes difficult to hear due to the masking sound for making the conversation in other adjacent meeting booths inaudible, which is relatively large in the meeting booth. It may be necessary to have a voice conversation.

In view of such inconvenience, it is an object of the present invention to provide a wall structure capable of making it difficult for the conversation content to be transmitted to the outside without increasing the ambient noise.

The present invention made to solve the above problems includes a plurality of panel members having a sound collecting portion for reflecting and converging sound waves incident from the front on the front surface, and the plurality of panel members are side surfaces of the sound collecting portion. One panel member group is formed by arranging them in parallel so as to be in contact with each other, and the sound collecting shape of the sound collecting portion is a quadratic curve rotating surface or a part of the quadratic curve rotating surface. It is a wall structure that divides the space.

The sound collecting shape of the sound collecting portion is a part of the quadratic curve rotating surface, and the rotation axis of the sound collecting shape provided on the panel member shifts to the central portion side in the left-right direction in the entire panel member group. It is good to do it.

It is preferable that the focal points of the sound collecting shapes of the plurality of sound collecting units are different.

The quadratic curve rotating surface is preferably a rotating paraboloid.

In the present invention, "reflecting and converging a sound wave" means that the reflected wave at two or more points on the surface with respect to the sound wave incident from the same point reaches the same point. The "quadratic curve surface of revolution" and the "rotating paraboloid" may be surfaces approximated by a plurality of planes or spherical surfaces.

The wall structure according to the present invention is used, for example, to separate a meeting booth from an external space such as an office space. The wall structure is arranged so that the front surfaces of the plurality of sound collecting portions face the meeting booth side. The wall structure is provided with a plurality of sound collecting portions that reflect and converge sound waves incident on the front surface from the front, and the sound collecting shape of the plurality of sound collecting portions is a quadratic curve rotating surface or this quadratic curve rotating surface. Since it is a part of the above, even when talking in a relatively quiet voice in the meeting booth divided by the wall structure, it is possible to hear each other's voices relatively easily. Therefore, the voice of the speaker is naturally reduced, and it is possible to prevent the voice from leaking to the outside and being heard by a third party.

It is a schematic plan view which shows the meeting booth formed by the wall structure which concerns on one Embodiment of this invention. FIG. 5 is a cross-sectional view taken along the line AA of the wall structure of FIG. It is a schematic plan view which shows the meeting booth formed by the wall structure which concerns on the form different from the wall structure of FIG. It is a schematic plan view which shows the meeting booth formed by the wall structure which concerns on the form different from the wall structure of FIG. 1 and FIG. It is a schematic plan view which shows the meeting booth formed by the wall structure which concerns on the form different from the wall structure of FIG. 1, FIG. 3 and FIG. It is a schematic front view of the plurality of sound collecting parts of FIG. 1 is a schematic plan view showing a meeting booth formed by a wall structure having a form different from that of the wall structures of FIGS. 1 and 3 to 5. It is a schematic front view of the plurality of sound collecting parts of FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.

[First Embodiment]
<Wall structure>
The wall structure 1 of FIGS. 1 and 2 includes a pair of sound collecting portions 5a and 5b that reflect and converge sound waves incident on the front surface from the front. Specifically, the wall structure 1 includes a pair of panel members 2a and 2b, and the pair of panel members 2a and 2b each have one sound collecting portion 5a and 5b. The wall structure 1 is a wall structure for dividing an indoor space, and more specifically, a wall structure for separating a meeting booth from an external space such as an office space. In the wall structure 1, the meeting booth is separated from the external space by arranging a pair of panel members 2a and 2b on the floor surface. In addition to the wall structure 1, the division structure divided by the wall structure 1 includes a table 3 arranged between speakers P1 and P2 facing each other and a pair of chairs 4a and 4b on which the speaker sits. Be prepared. In the wall structure 1, a meeting booth is defined in the indoor space by separating the space near the table 3 from the surrounding space by a pair of panel members 2a and 2b. In the wall structure 1, the sound collecting shape of the pair of sound collecting portions 5a and 5b is a quadratic curve rotating surface or a part of the quadratic curve rotating surface.

The wall structure 1 is arranged so that the front surfaces of the pair of sound collecting portions 5a and 5b face the meeting booth side. In the wall structure 1, a pair of sound collecting portions 5a and 5b are arranged to face each other, and more specifically, a pair of sound collecting portions 5a and 5b are arranged so as to face each other with the table 3 interposed therebetween. .. In the division structure classified by the wall structure 1, the table 3 is arranged at an intermediate position sandwiched between the pair of sound collecting portions 5a and 5b, and a pair of the table 3 and the pair of sound collecting portions 5a and 5b are arranged. Chairs 4a and 4b are arranged. The wall structure 1 may be provided with a meeting booth and another panel member that divides the external space in a space other than the area sandwiched between the pair of sound collecting portions 5a and 5b. Further, as shown in FIGS. 1 and 2, the wall structure 1 is particularly preferably used for two speakers P1 and P2 to have a one-to-one conversation with a table 3 in between, but more. It can also be used for speaker conversations and for using teleconferencing systems.

The wall structure 1 includes a pair of sound collecting portions 5a and 5b that reflect and converge sound waves incident on the front surface from the front, and the sound collecting shape of the pair of sound collecting portions 5a and 5b rotates in a quadratic curve. Since it is a surface or a part of this quadratic curved surface of revolution, it is possible to hear each other's voices relatively easily even when talking with a relatively small voice in the meeting booth classified by the wall structure 1. can. Therefore, the voices of the speakers P1 and P2 are naturally reduced, and it is possible to prevent the voice from leaking to the outside and being heard by a third party.

Generally, when the sound source position of the sound collecting shapes of the sound collecting units 5a and 5b is at infinity where the incident waves are parallel, the sound wave emitted from this sound source tends to converge to the focal point of the sound collecting shape. On the other hand, according to the knowledge of the present inventor, when a pair of sound collecting units 5a and 5b are arranged to face each other and a sound source exists between the pair of sound collecting units 5a and 5b, the pair of sound collecting units A region with a high voice gain can be expressed between 5a and 5b. Specifically, when a sound source exists between a pair of sound collecting units 5a and 5b, the sound waves incident on one of the sound collecting units 5a and 5b from this sound source generally form a band-shaped region in a plan view and a side view. While forming, it is reflected to the other sound collecting portions 5a and 5b. Therefore, in the wall structure 1, since the pair of sound collecting portions 5a and 5b are arranged so as to face each other, it is easy to easily hear each other's voices even when the voices of the speakers P1 and P2 are reduced.

(Panel member)
The pair of panel members 2a and 2b have sound collecting portions 5a and 5b, and a waist wall portion 6 that adjusts the sound collecting portions 5a and 5b to a constant height and partitions the sound collecting portions 5a and 5b below the sound collecting portions 5a and 5b. .. The sound collecting portions 5a and 5b have, for example, a plate shape, and the above-mentioned sound collecting shape is formed on one surface thereof.

It is preferable that the rotation axes of the quadratic curve rotation surfaces of the pair of sound collecting portions 5a and 5b are arranged in the same linear shape. Further, the rotation axis of the quadratic curve rotation surface of the pair of sound collecting portions 5a and 5b is preferably a horizontal axis passing through the heads of two speakers P1 and P2 assumed in the meeting booth. Therefore, the wall structure 1 has a height adjusting mechanism in which the waist wall portion 6 can adjust the height positions of the sound collecting portions 5a and 5b, that is, the height position of the rotation axis of the quadratic curve rotating surface. Is preferable. In the wall structure 1, when a sound source exists between the sound collecting shapes of the pair of sound collecting portions 5a and 5b, a region having a high sound gain can be expressed between the sound collecting shapes. Speakers P1 and P2 make it easier to hear each other's voices accurately. Further, in the wall structure 1, by adjusting the central axis of the sound collecting shape as described above, it is easy to easily develop a region having a high voice gain according to the speakers P1 and P2.

It is preferable that the pair of sound collecting portions 5a and 5b have the same sound collecting shape. In the wall structure 1, since the sound collecting shapes of the pair of sound collecting portions 5a and 5b are the same, it is easy to develop a region having a high sound gain between the sound collecting shapes.

It is preferable that the focal points of the sound collecting shapes of the pair of sound collecting units 5a and 5b are different. In the wall structure 1, since the focal points of the sound collecting shapes of the pair of sound collecting units 5a and 5b are different, it is easy to develop a region having a high sound gain between the pair of sound collecting units 5a and 5b. The focus of the sound collecting shape of the pair of sound collecting units 5a and 5b is, for example, near the heads of the speakers P1 and P2 located in front of the sound collecting units 5a and 5b assumed in the meeting booth. Is preferable.

As the quadratic curve rotating surface, a rotating paraboloid or a rotating elliptical surface is preferable, and a rotating paraboloid is more preferable. Since the quadratic curve rotating surface is a rotating paraboloid, when a sound source exists between the pair of sound collecting portions 5a and 5b, the sound emitted from this sound source is the focal point of the quadratic curve rotating surface. It is easy to develop a region with a high sound gain between the pair of sound collecting portions 5a and 5b while suppressing the convergence to.

〔table〕
The table 3 preferably has a guiding structure that guides the seating positions of the speakers P1 and P2. Examples of this guidance structure include a notch 3a formed in the top plate so that the torso of the speakers P1 and P2 can enter. As described above, since the table 3 has the guiding structure, the speakers P1 and P2 are guided to the positions where the sound converges by the wall structure 1, and it is easier to prevent the conversation from leaking to the outside of the meeting booth. Can be done. The "notch formed so that the speaker's torso can be inserted" is not limited to the one that the speakers P1 and P2 actually use by entering the notch 3a, and the speaker P1 and P2 are not limited to those that are actually used. The P2 includes a notch provided for seating at an appropriate distance from the side edge of the top plate of the table 3.

[Second Embodiment]
<Wall structure>
The wall structure 11 of FIG. 3 includes four sound collecting portions 5a to 5d that reflect and converge sound waves incident on the front surface from the front. Specifically, the wall structure 11 includes four panel members 2a to 2d, and each of these panel members 2a to 2d has one sound collecting unit 5a to 5d. The wall structure 11 is a wall structure that divides the indoor space, and more specifically, is a wall structure for separating the meeting booth from the external space such as the office space. The wall structure 11 separates the meeting booth from the external space by arranging the four panel members 2a to 2d on the floor surface. In addition to the wall structure 11, the division structure classified by the wall structure 11 includes a table 13 having a top plate having a substantially rectangular shape in a plan view having four sides corresponding to speakers P1 to P4, and a speaker. It is provided with four chairs (not shown) on which P1 to P4 are seated. The wall structure 11 defines a meeting booth in the indoor space by separating the space near the table 13 from the surrounding space by the four panel members 2a to 2d. In the wall structure 11, the sound collecting shapes of the four sound collecting portions 5a to 5d are a quadratic curve rotating surface or a part of the quadratic curve rotating surface. The specific configurations of the panel members 2a to 2d in the wall structure 11 can be the same as those of the panel members 2a and 2b of the wall structure 1 of FIGS. 1 and 2.

The wall structure 11 is arranged so that the front surfaces of the four sound collecting portions 5a to 5d face the meeting booth side. In the wall structure 11, a pair of sound collecting portions 5a and 5b are arranged to face each other with the table 13 interposed therebetween, and a pair of sound collecting portions 5c and 5d are arranged to face each other with the table 13 interposed therebetween. The wall structure 11 is arranged so that the sound collecting portions 5a to 5d face one side of the table 13. That is, the pair of sound collecting parts 5a and 5b and the other pair of sound collecting parts 5c and 5d are arranged in parallel, and the pair of sound collecting parts 5a and 5b and the other pair of sound collecting parts 5c and 5d are perpendicular to each other. It is arranged in. The wall structure 11 is provided with a meeting booth and other panel members that divide the external space in a space other than the area sandwiched between the pair of sound collecting portions 5a and 5b and the other pair of sound collecting portions 5c and 5d. May be good. Further, the wall structure 11 is particularly preferably used for four speakers P1 to P4 to have a conversation around the table 13, but for conversation by more speakers and for using a teleconferencing system. It can also be used for.

In the wall structure 11, the pair of sound collecting portions 5a and 5b are arranged to face each other, and the other pair of sound collecting portions 5c and 5d are arranged to face each other. When a sound source exists between the sound collecting units 5c and 5d, a region having a high sound gain can be expressed between these sound collecting units 5a to 5d. That is, for example, when a sound source exists between a pair of sound collecting units 5a and 5b, the sound waves incident on one of the pair of sound collecting units 5a and 5b from this sound source are flat as a whole. It is reflected on the other sound collecting part 5a, 5b side of the pair of sound collecting parts 5a, 5b while forming a band-shaped region in visual and lateral views. When a sound source exists between the other pair of sound collecting units 5c and 5d, the sound waves incident on one of the other pair of sound collecting units 5c and 5d from this sound source are the total sound waves. As a result, a band-shaped region is formed in a plan view and a side view, and is reflected to the other sound collecting section 5c, 5d side of the other pair of sound collecting sections 5c, 5d. Therefore, in the wall structure 11, the pair of sound collecting portions 5a and 5b are arranged to face each other, and the other pair of sound collecting portions 5c and 5d are arranged to face each other, so that a region having a high gain can be expanded. Even when the voices of the speakers P1 to P4 are reduced, it is easy to hear each other's voices.

It is preferable that the focal points of the sound collecting shapes of the four sound collecting portions 5a to 5d are different. The wall structure 11 has a high sound gain between the pair of sound collecting portions 5a and 5b and between the other pair of sound collecting portions 5c and 5d because the focal points of the sound collecting shapes of the four sound collecting portions 5a to 5d are different. Easy to express the region. The focus of the sound collecting shapes of the sound collecting units 5a to 5d is, for example, near the heads of the speakers P1 to P4 located in front of the sound collecting units 5a to 5d assumed in the meeting booth. preferable.

It is preferable that the rotation axes of the quadratic curve rotating surfaces of the pair of sound collecting portions 5a and 5b are arranged in the same linear shape, and the rotation axes of the quadratic curve rotating surfaces of the other pair of sound collecting portions 5c and 5d are the same. It is preferably arranged in a straight line. Further, the rotation axis of the quadratic curve rotation surface of the pair of sound collecting portions 5a and 5b is preferably a horizontal axis passing through the heads of two speakers P1 and P2 assumed in the meeting booth. The rotation axis of the quadratic curved surface of revolution of the pair of sound collecting portions 5c and 5d is preferably a horizontal axis passing through the heads of two speakers P3 and P4 assumed in the meeting booth.

〔table〕
The table 13 preferably has a guiding structure that guides the seating positions of the speakers P1 to P4. Examples of this guidance structure include notches 13a formed on the four sides of the top plate so that the torso of the speakers P1 to P4 can enter. As described above, since the table 13 has the guiding structure, the speakers P1 to P4 are guided to the positions where the sound converges by the wall structure 11, and it is easier to prevent the conversation from leaking to the outside of the meeting booth. Can be done.

[Third Embodiment]
<Wall structure>
The wall structure 21 of FIG. 4 includes a plurality of sound collecting portions 25a to 25j that reflect and converge sound waves incident on the front surface from the front. Specifically, the wall structure 21 includes a plurality of panel members 22a to 22j, and each of these panel members 22a to 22j has one sound collecting unit 25a to 25j. The wall structure 21 is a wall structure for dividing an indoor space, and more specifically, a wall structure for separating a meeting booth from an external space such as an office space. The wall structure 21 separates the meeting booth from the external space by arranging a plurality of panel members 22a to 22j on the floor surface. In addition to the wall structure 21, the division structure divided by the wall structure 21 includes a table 3 arranged between speakers P1 and P2 facing each other, and a pair of chairs (not shown) on which the speaker sits. To be equipped with. The wall structure 21 defines a meeting booth in the indoor space by dividing the space near the table 3 from the surrounding space by a plurality of panel members 22a to 22j. In the wall structure 21, the sound collecting shapes of the plurality of sound collecting portions 25a to 25j are a quadratic curve rotating surface or a part of the quadratic curve rotating surface. Since the table 3 in the wall structure 21 is the same as the table 3 in FIGS. 1 and 2, the same reference numerals are given and the description thereof will be omitted.

The wall structure 21 has a pair of panel member groups 23a and 23b composed of a plurality of panel members 22a to 22j. The pair of panel member groups 23a and 23b are configured so that the front surfaces of the sound collecting portions 25a to 25j of the plurality of panel members 22a to 22j face the meeting booth side. In the division structure divided by the wall structure 21, the table 3 is arranged at an intermediate position sandwiched between the pair of panel member groups 23a and 23b, and a pair of the table 3 and the pair of panel member groups 23a and 23b are arranged. Chairs are arranged. Even if the wall structure 21 is provided with a meeting booth and another panel member that divides the external space in a space other than the area sandwiched between the plurality of sound collecting portions 25a to 25j of the pair of panel member groups 23a and 23b. good. Further, the wall structure 21 is particularly preferably used for two speakers P1 and P2 to have a one-to-one conversation across a table 3, but a conversation by more speakers and a remote conference system can be used. It can also be used for use.

Since the pair of panel member groups 23a and 23b are arranged to face each other in the wall structure 21, the sound collecting portions 25a to the pair of panel member groups 23a and 23b between the pair of panel member groups 23a and 23b, in detail, the pair of panel member groups 23a and 23b. When a sound source exists between 25j, a region having a high sound gain can be developed between the sound collecting portions 25a to 25j of the pair of panel member groups 23a and 23d. Specifically, when a sound source exists between the pair of panel member groups 23a and 23b, the sound wave incident on the sound collecting portions 25a to 25j of the panel members 22a to 22j of one of the panel member groups 23a and 23b from this sound source. Is reflected on the sound collecting portions 25a to 25j of the other panel member groups 23a and 23b while forming a band-shaped region as a whole in a plan view and a side view. Therefore, in the wall structure 21, the pair of panel member groups 23a and 23b are arranged so as to face each other, so that even if the voices of the speakers P1 and P2 are reduced, they can easily hear each other's voices.

(Panel member group)
The pair of panel member groups 23a and 23b are configured to surround the back side of the speakers P1 and P2. Specifically, the pair of panel member groups 23a and 23b are configured by arranging a plurality of panel members 22a to 22j in an arch shape so as to be convex in the back direction of the speakers P1 and P2 in a plan view.

Each panel member 22a to 22j adjusts the sound collecting portions 25a to 25j and the sound collecting portions 25a to 25j to a constant height, and has a waist wall portion (not shown) that partitions below the sound collecting portions 25a to 25j. Has. The sound collecting portions 25a to 25j have, for example, a plate shape, and the above-mentioned sound collecting shape is formed on one surface thereof.

The sound collecting portions 25a to 25e of the panel members 22a to 22e constituting one panel member group 23a are arranged to face the sound collecting portions 25f to 25j of the panel members 22f to 22j constituting the other panel member group 23b. Is preferable. Specifically, the sound collecting portion 25a of one panel member group 23a is arranged to face the sound collecting portion 25f of the other panel member group 23b, and the sound collecting portion 25b of one panel member group 23a is arranged in the other panel member group. The sound collecting portion 25g of one panel member group 23a is arranged to face the sound collecting portion 25g of 23b, and the sound collecting portion 25c of one panel member group 23a is arranged to face the sound collecting portion 25h of the other panel member group 23b, and the sound collecting portion 25d of one panel member group 23a is arranged. Is preferably arranged to face the sound collecting portion 25i of the other panel member group 23b, and the sound collecting portion 25e of one panel member group 23a is arranged to face the sound collecting portion 25j of the other panel member group 23b. The wall structure 21 has a sound collecting portion 25a to 25e of the panel members 22a to 22e constituting one panel member group 23a and a sound collecting portion 25f to 25j of the panel members 22f to 22j constituting the other panel member group 23b. When a sound source exists between the pair of panel member groups 23a and 23b, a region having a high sound gain can be expressed between the sound collecting portions 25a to 25j facing each other. Therefore, the wall structure 21 has a sound collecting portion 25a to 25e of the panel members 22a to 22e constituting one panel member group 23a and a sound collecting portion 25f of the panel members 22f to 22j constituting the other panel member group 23b. By arranging ~ 25j so as to face each other, the region with high gain can be expanded, and even when the voices of the speakers P1 and P2 are reduced, it is easy to hear each other's voices.

It is preferable that the focal points of the sound collecting shapes of the sound collecting portions 25a to 25j are different. In the wall structure 21, since the focal points of the sound collecting shapes of the sound collecting portions 25a to 25j are different, it is easy to develop a region having a high sound gain between the pair of panel member groups 23a and 23b.

When the sound collecting portions 25a to 25e of the panel members 22a to 22e constituting one panel member group 23a are arranged to face the sound collecting portions 25f to 25j of the panel members 22f to 22j forming the other panel member group 23b. It is preferable that the sound collecting portions 22a to 22j arranged to face each other have the same sound collecting shape. Further, it is preferable that the rotation axes of the quadratic curve rotation surfaces of the sound collecting portions 22a to 22j arranged opposite to each other are arranged in the same linear shape.

The sound collecting shape of the sound collecting portions 25a to 25j of the panel members 22a to 22j is preferably a part of the quadratic curve rotating surface. Further, as the quadratic curve rotating surface, a rotating paraboloid or a rotating elliptical surface is preferable, and a rotating paraboloid is more preferable. Since the quadratic curve rotating surface is a rotating paraboloid, when a sound source exists between the pair of panel member groups 23a and 23b, the sound emitted from this sound source is the focal point of the quadratic curve rotating surface. It is easy to develop a region with a high sound gain between the pair of panel member groups 23a and 23b while suppressing the convergence to.

[Fourth Embodiment]
<Wall structure>
The wall structure 31 of FIG. 5 includes a plurality of sound collecting portions 35a to 35e that reflect and converge sound waves incident on the front surface from the front. Specifically, the wall structure 31 includes a plurality of panel members 32a to 32e, and each of these panel members 32a to 32e has one sound collecting unit 35a to 35e. The wall structure 31 is a wall structure that divides the indoor space, and more specifically, is a wall structure for separating the meeting booth from the external space such as an office booth. The wall structure 31 separates the meeting booth from the external space by arranging a plurality of panel members 32a to 32e on the floor surface. In addition to the wall structure 31, the division structure classified by the wall structure 31 is a speaker who is adjacent to the wall structure 31 with his / her back facing the plurality of panel members 32a to 32e on the front side of the plurality of panel members 32a to 32e. A table 33 arranged in front of P1 and P2 and a pair of chairs (not shown) on which speakers P1 and P2 are seated are provided. The wall structure 31 defines a meeting booth in the indoor space by dividing the space near the table 33 from the surrounding space by a plurality of panel members 32a to 32e. In the wall structure 31, the sound collecting shapes of the plurality of sound collecting portions 35a to 35e are a part of the quadratic curve rotating surface or the quadratic curve rotating surface.

The wall structure 31 has one panel member group 34 composed of a plurality of panel members 32a to 32e. The panel member group 34 is configured so that the front surfaces of the sound collecting portions 35a to 35e of the plurality of panel members 32a to 32e face the meeting booth side. Further, in the panel member group 34, a plurality of sound collecting portions 35a to 35e are arranged in parallel, and specifically, a straight line so that the plurality of panel members 32a to 32e touch the side surfaces of the sound collecting portions 35a to 35e. It is arranged in a shape. In the division structure classified by the wall structure 31, the remote conference terminal T is placed on the table 33. The remote conference terminal T has a speaker and a microphone, and is configured to be able to emit sound to speakers P1 and P2 by the speaker. The wall structure 31 includes a meeting booth and other panel members that divide the external space in a space other than the area sandwiched between the sound collecting portions 35a to 35e of the plurality of panel members 32a to 32e and the remote conference terminal T. You may be. Further, the wall structure 31 is particularly preferably used for using a remote conference system using the remote conference terminal T, but may be used for a plurality of speakers to talk around the table 33.

Since the wall structure 31 is arranged in parallel so that the sound collecting portions 35a to 35e of the plurality of panel members 32a to 32e are in contact with each other on the side surfaces, the sound gain is gained between the sound source and the plurality of sound collecting portions 35a to 35e. Can express a high region of. Specifically, when the sound collecting portions 35a to 35e of the plurality of panel members 32a to 32e are arranged in parallel so as to contact the side surfaces, the sound source is incident on the sound collecting portions 35a to 35e of the panel members 32a to 32e. The generated sound waves are reflected while converging on the focal side of each of the sound collecting portions 35a to 35e. Therefore, according to the wall structure 31, even when the voices of the speakers P1 and P2 are reduced, it is easy to hear each other's voices.

(Panel member)
Each panel member 32a to 32e adjusts the sound collecting portions 35a to 35e and the sound collecting portions 35a to 35e to a constant height, and has a waist wall portion (not shown) that partitions the lower part of the sound collecting portions 35a to 35e. Has. The sound collecting portions 35a to 35e are, for example, plate-shaped, and the above-mentioned sound collecting shape is formed on one surface thereof.

As shown in FIG. 6, the sound collecting shape of the sound collecting portions 35a to 35e of the panel members 32a to 32e is preferably a part of the quadratic curve rotating surface. The wall structure 31 has, for example, a sound source (that is, a speaker of the remote conference terminal T) and the panel member having a sound collecting shape of the sound collecting portion 35c of the panel member 32c arranged in the central portion in the left-right direction of the panel member group 34. The center of the 32c in the left-right direction is a part of the quadratic curved surface of revolution through which the rotation axis passes, and the sound collecting portions 35a, 35b, of the panel members 32a, 32b, 32d, 32e arranged on the outside in the left-right direction of the panel member 32c, The sound collecting shape of 35d, 35e is a part of the quadratic curved surface of revolution in which the rotation axis passes through the center side in the left-right direction of the panel member group 34 rather than the center in the left-right direction of the sound source and each panel member 32a, 32b, 32d, 32e. can do. As a result, the wall structure 31 can reflect the sound emitted from the remote conference terminal T toward the center side in the left-right direction of the panel member group 34, and make it easier for the speakers P1 and P2 to hear the sound. In the wall structure 31, the sound collecting shape may be formed only on the upper side of the table 33.

Further, it is preferable that the rotation axis of the quadratic curve rotating surface of the sound collecting portions 35a to 35e of the panel members 32a to 32e is located between the assumed heads of the speakers P1 and P2. By locating the axis of rotation of the quadratic curve surface of revolution between the assumed heads of speakers P1 and P2, the voice of one speaker P1 is reflected to the other speaker P2, and the other speaker. It is easy to reflect the voice of P2 to one speaker P1 side. That is, in the wall structure 31, the sound gain for the sound emitted from each sound source is obtained by locating the rotation axis of the quadratic curve rotating surface of the sound collecting portions 35a to 35e of the panel members 32a to 32e between the sound sources. It is easy to express the high region on the other sound source side. Therefore, even when the voices of the speakers P1 and P2 are reduced, it is easy to hear each other's voices.

It is preferable that the focal points of the sound collecting shapes of the sound collecting portions 35a to 35e of the plurality of panel members 32a to 32e are different. As described above, since the focal points of the sound collecting shapes of the sound collecting portions 35a to 35e of the plurality of panel members 32a to 32e are different, it is easy to develop a region having a high sound gain on the front surface side of the panel member group 34. As a result, even if the heads of the speakers P1 and P2 deviate from the positions assumed in advance, it is unlikely that the speakers P1 and P2 will have difficulty in hearing the voice.

As the quadratic curve rotating surface, a rotating paraboloid or a rotating elliptical surface is preferable, and a rotating paraboloid is more preferable. Since the quadratic curve rotating surface is a rotating paraboloid, the sound emitted from the remote conference terminal T and the voices of the speakers P1 and P2 are suppressed from converging on the focal point of the quadratic curve rotating surface. , It is easy to develop a region with high sound gain on the front side of the panel member group 34.

〔table〕
The table 33 preferably has a notch 33a, which is a guiding structure that guides the seating positions of the speakers P1 and P2. Further, it is preferable that the table 33 has a positioning structure (not shown) indicating a position where the remote conference terminal T is placed. Examples of this positioning structure include marking by coloring indicating the mounting position of the remote conference terminal T, a pedestal for mounting the remote conference terminal T, and the like.

[Fifth Embodiment]
<Wall structure>
The wall structure 41 of FIG. 7 includes a plurality of sound collecting portions 45a to 45j that reflect and converge sound waves incident on the front surface from the front. Specifically, the wall structure 41 includes a plurality of panel members 42a to 42j, and each of these panel members 42a to 42j has one sound collecting unit 45a to 45j. The wall structure 41 is a wall structure that divides the indoor space, and more specifically, is a wall structure for separating the meeting booth from the external space such as an office booth. The wall structure 41 has a pair of opposite panel member groups 43a and 43b composed of a plurality of panel members 42a to 42j. The pair of panel member groups 43a and 43b are arranged so that the front surfaces of the sound collecting portions 45a to 45j of the plurality of panel members 42a to 42j face the meeting booth side. Further, the division structure classified by the wall structure 41 includes a table 3 arranged between the pair of panel member groups 43a and 43b and a chair on which the speakers P1 and P2 are seated, in addition to the wall structure 41. (Not shown). The table 3 is provided with a top plate having two opposite sides corresponding to speakers P1 and P2 facing each other, and these two sides are arranged in opposite directions of a pair of panel member groups 43a and 43b. That is, the wall structure 41 is configured such that the pair of panel member groups 43a and 43b are located on the sides of the speakers P1 and P2. The wall structure 41 separates the meeting booth from the external space by arranging a plurality of panel members 42a to 42j on the floor surface. The wall structure 41 defines a meeting booth in the indoor space by dividing the space near the table 3 from the surrounding space by a plurality of panel members 42a to 42j. In the wall structure 41, the sound collecting shape is a quadratic curve rotating surface or a part of the quadratic curve rotating surface. Since the table 3 in the wall structure 41 is the same as the table 3 in FIGS. 1 and 2, the same reference numerals are given and the description thereof will be omitted.

In the wall structure 41, a plurality of sound collecting portions 45a to 45j are arranged in parallel in the panel member groups 43a and 43b. Specifically, in the panel member groups 43a and 43b, the plurality of panel members 42a to 42j are arranged in a straight line in a plan view in a state where the side surfaces of the sound collecting portions 45a to 45j are in contact with each other. The wall structure 41 may be provided with a meeting booth and another panel member that divides the external space in a space other than the area sandwiched between the sound collecting portions 45a to 45j of the pair of panel member groups 43a and 43b. Further, the wall structure 41 is particularly preferably used for the speakers P1 and P2 to face each other and have a conversation with the pair of panel member groups 43a and 43b arranged sideways, with the table 3 sandwiched between them. It can also be used for conversation by speakers facing the opposite directions of the panel member groups 43a and 43b of the above, and for using a remote conference system.

(Panel member group)
The panel members 42a to 42e of one panel member group 43a are arranged to face the panel members 42f to 42j of the other panel member group 43b. More specifically, the sound collecting portions 45a to 45e of the panel members 42a to 42e of one panel member group 43a are arranged to face the sound collecting portions 45f to 45j of the panel members 42f to 42j of the other panel member group 43b. There is.

Each panel member 42a to 42j adjusts the sound collecting portions 45a to 45j and the sound collecting portions 45a to 45j to a constant height, and has a waist wall portion (not shown) that partitions below the sound collecting portions 45a to 45j. Has. The sound collecting portions 45a to 45j are, for example, plate-shaped, and the above-mentioned sound collecting shape is formed on one surface thereof.

As shown in FIG. 8, the sound collecting shape of the sound collecting portions 45a to 45j of the panel members 42a to 42j is preferably a part of the quadratic curve rotating surface. Further, it is preferable that the focal points of the sound collecting shapes of the sound collecting portions 45a to 45j of the plurality of panel members 42a to 42j are different in each of the panel member groups 43a and 43b. Further, in the sound collecting shape of the sound collecting portions 45a to 45j of the panel members 42a to 42j, the rotation axis is perpendicular to the plane direction of the panel members 42a to 42j and passes through the center of the panel members 42a to 42j in the left-right direction. It is preferably part of the quadratic curve surface of revolution. According to this configuration, a voice incident from one side of a pair of panel member groups 43a, 43b in the extending direction (direction in which a plurality of panel members 42a to 42j are continuous in each panel member group 43a, 43b) is heard in the extending direction. It is easy to reflect on the other side of. Specifically, when a sound source exists on one side of the pair of panel member groups 43a and 43b in the extending direction, the sound waves incident on the sound collecting portions 45a to 45j of the panel members 42a to 42j from the sound source are collected. The sound portions 42a to 42j are reflected on the other side in the extending direction of the pair of panel member groups 43a and 43b while converging on different points. As a result, when the sound source is present on one side of the pair of panel member groups 43a and 43b in the extending direction, a region having a high voice gain is likely to be generated on the other side in the extending direction. From the viewpoint of controlling the expression position in the region where the voice gain is high, it is preferable that the sound collecting shapes of the sound collecting portions 45a to 45j arranged opposite to each other are the same.

The wall structure 41 tends to reflect the voice incident from one side of the pair of panel member groups 43a and 43b in the extending direction toward the other side of the pair of panel member groups 43a and 43b in the extending direction. The voice of the speaker P1 can be efficiently reflected toward the other speaker P2, and the voice of the other speaker P2 can be efficiently reflected toward the one speaker P1. Even when the voice of P2 is reduced, it is easy to hear each other's voices.

[Other Embodiments]
The embodiments do not limit the configuration of the present invention. Therefore, it is possible to omit, replace or add components of each part of the embodiment based on the description of the present specification and common general technical knowledge, and all of them are construed as belonging to the scope of the present invention. Should be.

For example, in the wall structure, each panel member does not necessarily have one sound collecting portion, and one panel member may have a plurality of sound collecting portions. In this case, the wall structure may be composed of, for example, only one panel member.

The specific configuration of the panel member is not particularly limited, and for example, the above-mentioned waist wall portion may not be provided.

The specific configuration and number of tables and chairs in the compartmentalized structure classified by the wall structure are not particularly limited. For example, the table does not have to have a seating position guidance structure or a positioning structure indicating a position on which the remote conference terminal is placed. In addition, the wall structure does not necessarily have to include a table and chairs.

The wall structure may be used to form a fixed wall or ceiling that forms part of the building.

As described above, the wall structure of the present invention can make it difficult for the conversation content to be transmitted to the outside without increasing the ambient noise. Therefore, in particular, for forming a meeting booth by dividing the indoor space. It can be preferably used.

1,11,21,31,41 Wall structure 2a-2d, 22a-22j, 32a-32e, 42a-42j Panel members 3,13,33 Tables 3a, 13a, 33a Notches 4a, 4b Chairs 5a-5d, 25a ~ 25j, 35a ~ 35e, 45a ~ 45j Sound collecting part 6 Waist wall part 23a, 23b, 34, 43a, 43b Panel member group P1 to P4 Speaker T Remote conference terminal

Claims (4)

It is provided with a plurality of panel members having a sound collecting unit that reflects and converges sound waves incident from the front on the front surface.
One panel member group is formed by arranging the plurality of panel members in parallel so as to contact the side surfaces of the sound collecting portion.
A wall structure that divides an indoor space in which the sound collecting shape of the sound collecting portion is a quadratic curved rotating surface or a part of the quadratic curved rotating surface. The sound collecting shape of the sound collecting portion is a part of the quadratic curve rotating surface, and the rotation axis of the sound collecting shape provided on the panel member shifts to the central portion side in the left-right direction in the entire panel member group. The wall structure according to claim 1. The wall structure according to claim 2, wherein the focal points of the sound collecting shapes of the plurality of sound collecting units are different. The wall structure according to claim 1, claim 2 or claim 3, wherein the quadratic curve rotating surface is a rotating paraboloid.

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