JP6848679B2 - Partition - Google Patents

Description

The present invention relates to a partition.

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 partition capable of facilitating conversation while suppressing leakage of conversation content to the outside.

The present invention made to solve the above problems is provided with a sound collecting unit on the front side for reflecting and converging sound waves incident from the front, and the sound collecting unit has means for absorbing or scattering high-pitched sound. It is a partition that divides the indoor space.

The sound absorbing means may be a porous layer provided on the foremost surface of the sound collecting portion.

It is preferable that the plurality of the porous layers are partially provided.

The scattering means may be a plurality of protrusions provided on the foremost surface of the sound collecting portion.

The sound collecting shape of the sound collecting unit may be a quadratic curve rotating surface, a part of the quadratic curve rotating surface, or a combination thereof.

In the present invention, "reflecting and converging sound waves" means that reflected waves at two or more points on the surface with respect to sound waves incident from the same point reach the same point. "High-pitched sound" refers to a sound wave having a frequency of 2 kHz or higher. The "quadratic curve surface of revolution" may be a surface approximated by a plurality of planes or spherical surfaces.

The partition according to the present invention is used, for example, to separate a meeting booth from an external space such as an office space. The partition is arranged so that the sound collecting portion faces the meeting booth side. Since the partition is provided with a sound collecting section on the front side that reflects and converges sound waves incident from the front, even if a conversation is made in a relatively quiet voice in the meeting booth divided by the partition, each other The voice can be heard relatively easily. Therefore, the partition can suppress the leakage of the conversation content to the outside. Further, since the partition has a means for the sound collecting portion to absorb or scatter the sound in the high frequency range, it is possible to suppress the emphasis of the conversation sound in the high frequency range, thereby facilitating the conversation. Can be done.

It is a schematic plan view which shows the partition structure provided with the partition which concerns on one Embodiment of this invention. FIG. 5 is a cross-sectional view taken along the line AA of the sectional structure of FIG. It is a schematic front view which shows the sound collecting part of the partition of FIG. It is a BB line end view of the sound collecting part of FIG. It is a schematic front view which shows the sound collecting part which concerns on the form different from the sound collecting part of FIG. It is a CC line end view of the sound collecting part of FIG. It is a schematic front view which shows the sound collecting part which concerns on the form different from the sound collecting part of FIGS. 3 and 5. It is a DD line end view of the sound collecting part of FIG. It is a schematic front view which shows the sound collecting part which has the sound collecting shape which concerns on the form different from the sound collecting shape of FIG. 9 is a cross-sectional view taken along the line EE of the sound collecting portion of FIG. It is a schematic front view which shows the sound collecting part which has the sound collecting shape which concerns on the form different from the sound collecting shape of FIG. 3 and FIG.

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

[First Embodiment]
<Division structure>
The compartmentalized structures of FIGS. 1 and 2 include a partition 1 according to an embodiment of the present invention. The partition 1 includes a sound collecting unit 2 on the front side that reflects and converges sound waves incident from the front. The partition 1 is a partition for dividing an indoor space, for example, a partition for separating a meeting booth from an external space such as an office space. In the present invention, the "front side" means a side that suppresses leakage of conversation contents to the outside by a partition according to the present invention, and in the present embodiment, means a meeting booth side. Before explaining the partition 1, first, the outline of the division structure including the partition 1 will be described.

The partition structure includes a pair of partitions 1, a table 3 arranged between speakers P1 and P2 facing each other, and a pair of chairs 4 on which speakers are seated. In the partition structure, a pair of the partitions 1 are arranged to face each other, a table 3 is arranged at an intermediate position sandwiched between the pair of the partitions 1, and a pair of chairs are arranged between the table 3 and the pair of the partitions 1. 4 is arranged. The table 3 has a notch 3a in which the body of the speakers P1 and P2 enters the top plate as a guiding structure for guiding the seating position of the speakers P1 and P2. As described above, since the table 3 has the guidance structure, the speakers P1 and P2 can be guided to the position where the sound converges by the division structure, and the conversation can be easily prevented from leaking to the outside of the meeting booth. .. The "notch formed so that the speaker's body 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. Includes a notch provided for P2 to sit at an appropriate distance from the side edge of the table top of the table 3.

As shown in FIGS. 1 and 2, the division structure 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 talks. It can also be used for conversations by people and for using teleconferencing systems. Further, the partition structure may include a meeting booth and another partition that divides the external space in a space other than the area sandwiched between the pair of partitions 1.

(Partition)
The partition 1 has a sound collecting unit 2 and a waist wall portion 5 that adjusts the sound collecting unit 2 to a constant height and partitions the sound collecting unit 2 below the sound collecting unit 2. The sound collecting unit 2 has, for example, a plate shape, and a sound collecting shape is formed on the front surface side. The sound collecting unit 2 is arranged so that the sound collecting shape faces the meeting booth side.

As shown in FIGS. 3 and 4, in the partition 1, the sound collecting shape of the sound collecting unit 2 is a quadratic curved surface of revolution. As a result, in the partition 1, the outermost shape of the front surface of the sound collecting portion 2 is a quadratic curved surface of revolution. In the partition 1, the sound collecting shape of the sound collecting unit 2 is a quadratic curve rotating surface, so that, for example, the rotation axis of the quadratic curve rotating surface passes near the heads of the two speakers P1 and P2. By arranging the sound collecting unit 2, the voices of the speakers P1 and P2 on the side distant from the sound collecting unit 2 are reflected and easily converged in the vicinity of the speakers P1 and P2 located on the sound collecting unit 2 side. In particular, by adjusting the heads of one speaker P1 and P2 located with their backs to the partition 1 so as to be close to the focal position of the sound collecting shape, the voices of the other speakers P1 and P2 can be heard. In addition to being reflected in a sound collecting shape, it can be reliably converged near the head of one of the speakers P1 and P2. As a result, one speaker P1 and P2 located with their backs to the partition 1 can easily hear the conversation of the other speaker P1 and P2.

The sound source position corresponding to the focal position of the sound collecting shape can be near the assumed head of the speakers P1 and P2 located across the table 3. In this case, the quadratic curve surface of revolution is preferably a spheroidal surface. In this way, since the quadratic curved surface of revolution is a spheroidal surface, the two speakers P1 and P2 are separated from the sound collecting unit 2 by adjusting the two focal points in the vicinity of the assumed heads. The voices of the speakers P1 and P2 on the other side can be reflected and easily and surely converged in the vicinity of the speakers P1 and P2 located on the sound collecting unit 2 side.

Further, the sound source position corresponding to the focal position of the sound collecting shape may be infinity in which the incident waves are parallel. In this case, the quadratic curve rotating surface is preferably a rotating paraboloid. As described above, since the quadratic curve rotating surface is a rotating paraboloid, for example, when a plurality of speakers are present on opposite sides of the table 3, the voices of the plurality of speakers are collected. It can efficiently converge toward the speaker who is located with his back to the shape.

The sound collecting unit 2 has a means (sound absorbing means) for absorbing high-pitched sound. Specifically, as shown in FIGS. 3 and 4, the sound collecting unit 2 has a main body 6 having the sound collecting shape on the front surface and a porous layer 7 which is the sound absorbing means laminated on the front surface of the main body 6. And have.

Since the sound collecting unit 2 has the sound collecting shape, the partition 1 can reflect and converge the sound wave incident from the front. Therefore, the partition 1 can relatively easily hear each other's voices even when talking in a relatively quiet voice in the meeting booth divided by the partition 1. Therefore, the partition 1 can suppress the leakage of the conversation content to the outside. On the other hand, when it has such a sound collecting shape, the reflected sound tends to be a sound in which the high frequency range is emphasized due to this sound collecting shape. In particular, when the sound collecting shape is a quadratic curved surface of revolution or a rotating paraboloid, the sound gain tends to be higher in the high frequency range, so that the sound quality in which the high frequency range is emphasized tends to be audible. On the other hand, in the partition 1, since the sound collecting unit 2 has the sound absorbing means, it is possible to suppress the emphasis of the conversation sound in the high frequency range, thereby facilitating the conversation.

The main body 6 can be a substantially plate-like body having the sound collecting shape formed on the front surface. It is preferable that the main body 6 has a structure that does not substantially absorb and scatter sound waves. The main body 6 is preferably a rigid plate having rigidity, and is preferably provided with a characteristic impedance sufficiently larger than the characteristic impedance of air, such as being a solid substance so that sound waves can be accurately reflected by the sound collecting shape. .. Further, the front surface of the main body 6 is preferably a smooth surface. Examples of the material of the main body 6 include synthetic resin, metal, wood and the like. The phrase "substantially does not absorb and scatter sound waves" means that it does not have a structure that absorbs and scatters sound waves, except for an unavoidable structure.

The porous layer 7 is provided on the foremost surface of the sound collecting portion 2. The porous layer 7 is laminated on the surface of the main body 6 by, for example, an adhesive. In the present embodiment, the porous layer 7 covers the entire surface of the sound collecting shape. Further, in the present embodiment, the porous layer 7 is directly laminated on the surface of the main body 6 by an adhesive, and has no other layer between the porous layer 7 and the main body 6 except for the adhesive layer. The porous layer 7 has a large number of communication holes inside. The porous layer 7 is configured so that sound waves incident on the pores can be vibrated by air. The porous layer 7 is configured to be able to absorb sound energy as heat energy due to friction generated by this vibration, and is configured to be able to intensively absorb sound waves in a high frequency range. By having the porous layer 7 as the sound absorbing means, the partition 1 can intensively absorb sound waves in the high frequency range, thereby facilitating sound quality in which the high frequency range due to the sound collecting shape is emphasized. And it can be surely relieved.

Examples of the material for forming the porous layer 7 include foamed polyurethane compositions, foamed polyethylene compositions, foamed resin compositions such as foamed polystyrene compositions, and inorganic fiber materials such as rock wool and glass wool. The porous layer 7 can be configured as, for example, a foamed resin layer made of the foamed resin composition, a non-woven fabric layer made of the inorganic fiber material, a felt layer, or the like.

The average thickness of the porous layer 7 can be appropriately set based on the material, bulk density, and the like of the porous layer 7 so that the sound waves in the high frequency range can be absorbed intensively. As the lower limit of the average thickness of the porous layer 7, 1 mm is preferable, and 2 mm is more preferable. On the other hand, the upper limit of the average thickness of the porous layer 7 is preferably 25 mm, more preferably 20 mm. If the average thickness of the porous layer 7 is smaller than the lower limit, it may not be possible to sufficiently absorb high-pitched sound. On the contrary, when the average thickness of the porous layer 7 exceeds the upper limit, there is a high possibility that the sound in the mid-low range is absorbed in addition to the sound in the high range.

As the lower limit of the bulk density of the porous layer 7, 12 kg / cm ³ is preferable, and 25 kg / cm ³ is more preferable. On the other hand, as the upper limit of the bulk density of the porous layer 7, 120 kg / cm ³ is preferable, and 96 kg / cm ³ is more preferable. If the bulk density is less than the lower limit, it may not be possible to sufficiently absorb high-pitched sound. On the contrary, when the bulk density exceeds the upper limit, there is a high possibility that the sound in the mid-low range is absorbed.

[Second Embodiment]
(Partition)
Next, with reference to FIGS. 5 and 6, a partition having a form different from that of the partition 1 of FIG. 1 will be described. The partition in the present embodiment can be configured in the same manner as the partition 1 in FIG. 1 except for the sound collecting unit 12. Therefore, in the following, only the sound collecting unit 12 will be described.

The sound collecting unit 12 reflects and converges the sound wave incident from the front. The sound collecting unit 12 has, for example, a plate shape, and a sound collecting shape is formed on the front surface side. The sound collecting shape of the sound collecting unit 12 is a quadratic curved surface of revolution. As a result, in the partition, the approximate shape of the front surface of the sound collecting unit 2 is a quadratic curved surface of revolution. The specific shape of the quadratic curve rotating surface can be the same as that of the sound collecting unit 2 of FIG. The sound collecting unit 12 is arranged so that the sound collecting shape faces the meeting booth side.

The sound collecting unit 12 has a means (sound absorbing means) for absorbing high-pitched sound. Specifically, as shown in FIGS. 5 and 6, the sound collecting unit 12 has a main body 6 having the sound collecting shape on the front surface and a plurality of porous bodies which are the sound absorbing means laminated on the front surface of the main body 6. It has a layer 17. Since the specific configuration of the main body 6 can be the same as that of the sound collecting unit 2 of FIG. 1, the same reference numerals are given and the description thereof will be omitted.

The porous layer 17 is partially provided on the foremost surface of the sound collecting portion 12. Each porous layer 17 is laminated on the surface of the main body 6 by, for example, an adhesive. Further, in the present embodiment, the plurality of porous layers 17 are directly laminated on the surface of the main body 6 by an adhesive, and other layers except the adhesive layer are sandwiched between the plurality of porous layers 17 and the main body 6. Does not have. Each porous layer 17 has a large number of communication holes inside. Each porous layer 17 is configured so that sound waves incident on the pores can be vibrated by air. Each porous layer 17 is configured to be able to absorb sound energy as heat energy due to friction generated by this vibration, and is configured to be able to intensively absorb sound waves in a high frequency range. The forming material, average thickness, and bulk density of each porous layer 17 can be the same as those of the porous layer 7 of FIG.

The shapes of the plurality of porous layers 17 may be the same or different. However, it is preferable that the shapes of the plurality of porous layers 17 are the same so that the sound absorption function in the high frequency range can be easily controlled by the sound collecting unit 12 as a whole. The specific shape of each porous layer 17 is not particularly limited, and examples thereof include a rectangular shape, a circular shape, a linear shape, a polygonal shape, and the like. Has been done.

It is preferable that the plurality of porous layers 17 are arranged at substantially equal densities on the front surface of the sound collecting shape. In this way, by disposing the plurality of porous layers 17 on the front surface of the sound collecting shape at substantially equal densities, it is possible to attenuate the high-pitched sound substantially uniformly over the entire surface of the sound collecting shape. Because it can be done, it is hard to give the speaker a sense of discomfort. When the plurality of porous layers 17 are arranged at substantially equal densities, it is preferable that the plurality of porous layers 17 are arranged in a staggered pattern on the front surface of the sound collecting shape, for example.

The lower limit of the average sound absorption coefficient of the sound collecting unit 12 at 500 Hz is preferably 0.05, more preferably 0.08. On the other hand, as the upper limit of the average sound absorption coefficient of the sound collecting unit 12 at 500 Hz, 0.15 is preferable, and 0.12 is more preferable. Further, as the lower limit of the average sound absorption coefficient of the sound collecting unit 12 at 2 kHz, 0.30 is preferable, and 0.35 is more preferable. On the other hand, as the upper limit of the average sound absorption coefficient of the sound collecting unit 12 at 2 kHz, 0.50 is preferable, and 0.45 is more preferable. Further, as the lower limit of the average sound absorption coefficient of the sound collecting unit 12 at 4 kHz, 0.60 is preferable, and 0.70 is more preferable. On the other hand, as the upper limit of the average sound absorption coefficient of the sound collecting unit 12 at 4 kHz, 0.95 is preferable, and 0.90 is more preferable. If the average sound absorption coefficient at each frequency does not reach the lower limit, it may not be possible to sufficiently absorb high-pitched sound. On the other hand, when the ratio is within the above range, the sound in the high frequency range can be selectively and appropriately absorbed, and there is a low possibility that the speaker feels uncomfortable. The "average sound absorption coefficient of the sound collecting section" is the product of the sound absorption coefficient of the main body of the sound collecting section and the area of the main body exposed in front of the sound collecting section, and the sound absorbing coefficient of the porous layer and the sound collecting section. The value obtained by adding the product with the area of the porous layer exposed on the front surface and dividing this added value by the area on the front surface of the sound collecting portion.

Since a plurality of porous layers 17 are partially provided on the front surface of the sound collecting unit 12, the partition can appropriately control the absorption ratio of high-pitched sound, giving the speaker a sense of discomfort. The risk is low.

[Third Embodiment]
(Partition)
Subsequently, with reference to FIGS. 7 and 8, a partition having a form different from that of the partition 1 and the partition of FIG. 5 will be described. The partition in the present embodiment can be configured in the same manner as the partition 1 in FIG. 1 except for the sound collecting unit 22. Therefore, in the following, only the sound collecting unit 22 will be described.

The sound collecting unit 22 reflects and converges sound waves incident from the front. The sound collecting unit 22 has, for example, a plate shape, and a sound collecting shape is formed on the front surface side. The sound collecting shape of the sound collecting unit 22 is a quadratic curved surface of revolution. As a result, in the partition, the approximate shape of the front surface of the sound collecting unit 22 is a quadratic curved surface of revolution. The specific shape of the quadratic curve rotating surface can be the same as that of the sound collecting unit 2 of FIG. The sound collecting unit 22 is arranged so that the sound collecting shape faces the meeting booth side.

The sound collecting unit 22 has a means (scattering means) for scattering high-pitched sound. Specifically, as shown in FIGS. 7 and 8, the sound collecting unit 22 has a main body 6 having the sound collecting shape on the front surface and a plurality of protrusions 27 formed on the front surface of the main body 6 which are scattering means. And have. Since the specific configuration of the main body 6 can be the same as that of the sound collecting unit 2 of FIG. 1, the same reference numerals are given and the description thereof will be omitted.

The plurality of protrusions 27 are provided on the foremost surface of the sound collecting unit 22. The partition may be provided with a plurality of protrusions 27 by, for example, laminating a layer having a plurality of protrusions 27 on the surface on the front surface of the main body 6, and the plurality of protrusions 27 may be laminated on the front surface of the main body 6 by an adhesive or the like. Alternatively, the plurality of protrusions 27 and the main body 6 may be integrally formed by hot pressing using a mold or the like, or the plurality of protrusions 27 and the main body 6 may be separated from each other.

The plurality of protrusions 27 are arranged at substantially equal densities on the front surface of the sound collecting shape. The shape of the plurality of protrusions 27 is not particularly limited, and examples thereof include a dome shape such as a hemispherical shape and a semi-elliptical spherical shape, a conical shape, a pyramidal shape, a columnar shape, and a prismatic shape.

It is preferable that the shapes of the plurality of protrusions 27 are substantially the same. As the lower limit of the average diameter of the bottoms of the plurality of protrusions 27, 5 cm is preferable, 10 cm is more preferable, and 15 cm is further preferable. On the other hand, the upper limit of the average diameter is preferably 30 cm, more preferably 25 cm, and even more preferably 20 cm. If the average diameter is smaller than the lower limit, it may not be possible to sufficiently scatter high-pitched sounds. On the contrary, when the average diameter exceeds the upper limit, there is a high possibility that the sound in the mid-low range is scattered in addition to the sound in the high range. The "diameter" means the average value of the diameters when converted into a perfect circle with an equal area. Further, the "average diameter" means an average value of the diameters of 10 arbitrarily extracted protrusions.

The lower limit of the ratio of the average height to the average diameter of the plurality of protrusions 27 is preferably 0.10, more preferably 0.20, and even more preferably 0.25. On the other hand, as the upper limit of the ratio, 0.50 is preferable, 0.40 is more preferable, and 0.35 is further preferable. If the ratio is less than the lower limit, the scattering angle of the sound wave becomes insufficient, and there is a possibility that the sound in the high frequency range cannot be sufficiently attenuated. On the contrary, if the ratio exceeds the upper limit, the plurality of protrusions 27 may be easily damaged. The "average height" means an average value of the heights of 10 arbitrarily extracted protrusions.

The lower limit of the ratio of the total bottom area of the plurality of protrusions 27 to the area of the sound collecting shape is preferably 0.2, more preferably 0.3. On the other hand, as the upper limit of the ratio, 0.6 is preferable, and 0.5 is more preferable. If the ratio is less than the lower limit, it may not be possible to sufficiently scatter high-pitched sounds. On the other hand, when the ratio is within the above range, the sound in the high frequency range can be appropriately scattered, and there is a low possibility that the speaker feels uncomfortable.

The number of existing protrusions 27 per unit area of the sound collecting shape can be set based on the frequency band to be acted on. As the lower limit of the number of the plurality of protrusions 27 per unit area of the sound collecting shape, for example, 5 pieces / m ² is preferable, and 10 pieces / m ² is more preferable. If the number of the plurality of protrusions 27 per unit area does not reach the lower limit, the high-pitched sound may not be sufficiently scattered. On the other hand, the upper limit of the number of existing protrusions 27 per unit area of the sound collecting shape is not particularly limited, but can be ^{, for example, 30 / m 2.}

Since the partition 27 is provided with the plurality of protrusions 27 on the foremost surface of the sound collecting portion 22, the sound in the high frequency range can be scattered by the plurality of protrusions 27, so that the high frequency range due to the sound collecting shape is generated. The emphasized sound quality can be easily and surely softened.

[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 above-described embodiment, the configuration in which the sound collecting shape of the sound collecting portion is a quadratic curved surface of revolution has been described, but the sound collecting shape is particularly limited as long as the reflected sound wave can be converged. Instead, for example, it may be a combination of a plurality of quadratic curve rotating surfaces, a part of the quadratic curve rotating surface, or a combination of a part of the quadratic curve rotating surface. Hereinafter, other configuration examples of the sound collecting shape will be described with reference to FIGS. 9 to 11.

The sound collecting shape of the sound collecting unit 32 of FIGS. 9 and 10 is a combination of a plurality of quadratic curve rotating surfaces. In the sound collecting shape of the sound collecting unit 32, a plurality of quadratic curve rotating surfaces having the same focal position and different vertex positions are arranged concentrically. These plurality of quadratic curve surface of revolutions are connected by a conic surface whose apex is the focal point. As described above, since the sound collecting shape has a plurality of quadratic curved surface of revolution, the overall thickness of the sound collecting portion can be reduced, and a dead space is unlikely to be formed between the meeting booths. Can be used effectively.

The sound collecting shape of the sound collecting unit 42 in FIG. 11 is a combination of a part of a plurality of quadratic curve rotating surfaces. In the sound collecting shape of the sound collecting unit 42, a part of a plurality of quadratic curved rotating surfaces whose rotation axes are parallel and whose focal positions are the same or close to each other are connected in the left-right direction. Even with this configuration, the overall thickness of the sound collecting unit can be reduced, and dead space is unlikely to be formed between the meeting booths, so that the indoor space can be effectively used. In addition, by shifting the focal position of a part of a plurality of quadratic curve rotating surfaces, it is less likely that the speaker will have difficulty hearing the voice even if the speaker's head deviates from a predetermined position. ..

Further, the sound collecting shape of the sound collecting unit may be other than the combination of a plurality of quadratic curve rotating surfaces, a part of the quadratic curve rotating surface, or a part of the quadratic curve rotating surface, for example. It is also possible to adopt a configuration in which a plurality of planes are arranged in a curved surface so as to approximate a curved surface as a whole.

The partition may be provided with the sound collecting portion on the front side, and other specific configurations are not particularly limited.

The sound absorbing means and the scattering means are not limited to the configuration described in the above embodiment. For example, the scattering means may be a plurality of holes formed in the foremost surface of the sound collecting portion, or may be irregularities formed in the foremost surface of the sound collecting portion.

The partition may be configured as a fixed wall or ceiling member forming a part of the building.

As described above, the partition of the present invention can facilitate the conversation while suppressing the leakage of the conversation content to the outside, and is therefore particularly suitable for dividing the indoor space to form a meeting booth. Can be used for.

1 Partition 2,12,22,32,42 Sound collecting part 3 Table 3a Notch 4 Chair 5 Waist wall part 6 Main body 7,17 Porous layer 27 Protrusions P1, P2 Speaker

Claims (5)

A partition that divides an indoor space having a sound collecting unit on the front side that reflects and converges sound waves incident from the front, and the sound collecting unit has means for absorbing or scattering high-pitched sound. The partition according to claim 1, wherein the sound absorbing means is a porous layer provided on the foremost surface of the sound collecting portion. The partition according to claim 2, wherein the plurality of the porous layers are partially provided. The partition according to claim 1, wherein the scattering means is a plurality of protrusions provided on the foremost surface of the sound collecting portion. The partition according to any one of claims 1 to 4, wherein the sound collecting shape of the sound collecting unit is a quadratic curve rotating surface, a part of the quadratic curve rotating surface, or a combination thereof.

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