JP2023043875A - Work booth installation structure - Google Patents

Abstract

To provide a work booth installation structure capable of suppressing noises generated at one work booth from intruding into other work booths and being transmitted to workers with high volume via a common space only by means of a structure inside the work booth.SOLUTION: In a part of a room R in the building where ceiling equipment A is installed at a ceiling part thereof, two work booths B, B with a floor area of 0.36 m2 or more and 4 m2 or less, are installed so as to face each other across a common space S. One of the multiple partition wall materials forming each work booth B is composed of a communication wall material 1 with a communication opening at the top end, and partition wall materials other than that are composed of a high ceiling wall material 2 from a floor F of the room R to the ceiling. Each work booth B is installed so that the communication wall material 1 faces common space S and operation of the ceiling equipment A on the ceiling of common space S extends into the work booth B via a communication port 4. On the inside surface of each work booth B, a sound-absorbing part 10 is provided so that at least a portion thereof is provided at least at the top of the opposing side wall 3.SELECTED DRAWING: Figure 1

Description

The present invention relates to an installation structure of a work booth installed in a room within a building.

In recent years, with the aim of reducing the frequency of commuting to work, there is a demand for an environment where telework can be done outside the workplace. For telework at home, it is difficult to set up the telework environment, and in addition, as the working environment of the office, etc., there are more opportunities for online meetings, and more meetings are held at one's own desk. In some cases, a plurality of work booths are installed with partition wall materials, and the use of these work booths for users' telework or personal work in an office or the like is attracting attention.

In this way, when partitioning work booths in a large room with partition walls and providing a space for small meetings of one or two people or for telework, etc. If you enclose it up to the ceiling of the work booth, expensive ceiling equipment such as smoke and gas detectors, sprinklers, ventilation devices, etc. may be installed individually in the work booth. And the ceiling structure becomes large-scale, and the installation efficiency of the work booth deteriorates.

In general, in a room with a large space, the necessary number of disaster prevention equipment such as ventilation equipment, sprinklers, and fire alarms are installed in advance on the ceiling according to laws and regulations. It is desirable to use it as it is.

In this way, in order to use the ceiling equipment already installed in the ceiling of the room, to eliminate the need for additional work and to reduce the number of installations, when partitioning the room into work booths, each It is necessary to ensure that the work booth does not interfere with the operation of the ceiling equipment in the common space.

By the way, as a technology of this kind for setting up conference rooms, work areas, work booths, etc., conventionally, for example, in Patent Document 1, a private room is divided into a space with four walls, and an open type at the upper end of the front wall and the back wall A partition type semi-open private room device is disclosed in which a transom part is provided and an eaves-like member with a sound absorbing structure projecting into the private room is provided on the upper end of the side wall.

In addition, in Patent Document 2, in two rooms adjacent to each other through a partition, an open transom is formed in the upper part of the partition, and a sound absorbing material is provided on the ceiling surface above the partition. A sound-absorbing material is also installed on the wall facing the room to suppress the sound of conversations in the next room from entering the room.

Japanese Patent No. 3940025 Japanese Patent No. 5325488

By the way, when installing a work booth in a building room in this way, the room is divided into a common space in which common ceiling equipment is installed on the ceiling and the floor is a passageway, and a work booth. It is conceivable to employ a layout in which an open transom having an opening is provided in the upper part of the partition wall material on the common space (passage) side, and the inside of the work booth is communicated with the external ceiling equipment through the opening between the open transom.

In that case, noise generated in the common space outside the work booth or in other work booths may enter the work booth through the opening, causing noise problems such as hearing the sounds and voices of other work booths. becomes. The intrusion of clearly identifiable voice into the work booth presents a major problem of distraction from work within the work booth. In addition, when a plurality of work booths are set up facing each other with a common space in between, the sound of one work booth is diffused through the common space to the other work booths facing each other with the common space in between. There is a problem that you cannot concentrate on the meeting.

In order to deal with such noise problems, it is possible to install sound absorbing materials on the inner surface of the work booth, but it is difficult to effectively solve the noise problem if the position of the sound absorbing materials is inappropriate in the small space of the work booth. become.

As in Patent Document 1, when an eaves-like member with an overhanging structure is provided at the upper end of the partition wall, an eaves-like member with a special structure is required. If the ceiling equipment installed on the ceiling is, for example, a sprinkler, in the unlikely event of a fire, the eaves-like member of the overhang structure will cause a water spraying problem, which is a problem.

In addition, with the sound absorbing structure of Patent Document 2, even if a ceiling device such as a sprinkler is installed in the ceiling, a speaker for generating the masking sound is required, and the masking sound is transmitted to the lower side of the ceiling. In order to obtain a structure that allows the ceiling to be divided, it is necessary to divide the ceiling so as to avoid the ceiling equipment, and install a sound-absorbing ceiling material with sound-absorbing materials and a sound-transmitting ceiling material without sound-absorbing materials. As a result, not only complicated design is required, but also large-scale construction of the ceiling of the room is inevitable.

The present invention has been made in view of this point, and its object is to install two work booths in a part of a room in a building so as to face each other across a common space, and to share the work booth with the work booth. The purpose is to plan the ceiling equipment without distinguishing it from the space. In other words, while maintaining the structure of the common ceiling in the large room where the work booths are installed, the sound (noise) generated in one work booth remains at a high volume only with the structure inside the work booth. Comfortable sound in the work booth by suppressing intrusion into other work booths facing each other across the common space through the common space and transmission of large volume to workers in other work booths. It is to form the environment.

In order to achieve the above object, in the present invention, two work booths are installed in a part of a room in a building so as to face each other across a common space. Operation of ceiling equipment installed in one of the work booth and the common space by providing a communication opening that communicates between the work booth and the common space on the upper or upper side of one of the wall materials facing the common space. A sound absorbing part is provided on the inner surface of each work booth, and at least a part of the sound absorbing part is located on the inner surface of the work booth where the sound absorbing part is provided, across the common space between the work booths. It is provided in the opposing area where the sound that enters from the communication opening of the other work booth that is opposed to it leaks into the common space without being reflected and enters without reflection.

Specifically, the first and second inventions include a plurality of partition wall materials or a plurality of partition wall materials erected on the floor of a room in a part of a room in a building in which ceiling equipment is installed in the ceiling. Installation structure in which two work booths with a floor area of 0.36m2 ^or more ^{and 4m2} or less surrounded by a partition wall material and the walls of the room are installed so as to face each other across a common space. It is intended for

In a first invention, each partition wall member is placed or fixed on the floor of the chamber, and the side end portion of each partition wall member is the side end portion of the other adjacent partition wall member. Alternatively, one of the plurality of partition wall members fixed to the wall of the room and forming each work booth has a communication port provided at the upper end or upper side thereof for communicating the inside and outside of the work booth. It is a general-purpose wall material, and the partition wall material other than the communication wall material is a high-ceiling wall material having a height from the floor to the ceiling of the room. Facing the shared space, the ceiling equipment provided in one of the work booth and the shared space is installed so that the operation of the ceiling equipment extends to the other through the communication port, and the two work booths are installed for one work. It is arranged at a position where there is a possibility that the sound leaking from the communication port of the booth into the common space may enter the other work booth from the communication port of the other work booth without being reflected, A sound absorbing part is provided on the inner surface of each work booth, and at least a part of the sound absorbing part in each work booth faces the work booth on the inner surface of the work booth where the sound absorbing part is provided, across the common space. It is characterized in that it is provided in a facing area where the sound that leaks from the communication opening of the work booth into the common space and enters from the communication opening without reflection enters without reflection.

In a second aspect of the invention, each partition wall member is placed or fixed on the floor of the chamber, and the side end portion of each partition wall member is aligned with the side end portion of the other adjacent partition wall member. Alternatively, one of the plurality of partition wall members fixed to the wall of the room and forming each work booth has a communication port provided at the upper end or upper side thereof for communicating the inside and outside of the work booth. It is a general-purpose wall material, and the partition wall material other than the communication wall material is a high-ceiling wall material having a height from the floor to the ceiling of the room. Facing the shared space, the ceiling equipment provided in one of the work booth and the shared space is installed so that the operation of the ceiling equipment extends to the other through the communication port, and the two work booths are installed for one work. It is arranged at a position where there is a possibility that the sound leaking from the communication port of the booth into the common space may enter the other work booth from the communication port of the other work booth without being reflected, A sound absorbing portion is provided on the inner surface of each work booth, and at least a part of the sound absorbing portion is provided in the partition wall member or the chamber facing the communication wall member of the work booth in which the sound absorbing portion is provided. It is characterized in that it is provided at least in the upper part of the opposing side wall consisting of the wall of the .

In the first and second inventions, two work booths having a floor area of 0.36 m ² or more and 4 m ² or less are installed in a part of the room in the building so as to face each other across a common space. Each work booth is defined as part of a room by being surrounded by a plurality of partition wall materials or by the plurality of partition wall materials and the walls of the room. One of the multiple partition wall materials that form each work booth is a communication wall material that has a communication port on the upper end or upper side that communicates between the inside and outside of the work booth. It is a high-ceiling wall material that extends from the floor to the ceiling. The two work booths facing each other across the common space are installed so that one communication wall member provided with a communication port faces the common space. Therefore, the inside of each work booth communicates with the common space through the communication port of the wall material for communication, and when the existing ceiling equipment installed in one of the work booth and the common space is operated, the operation is performed through the communication port in the other space. It will also reach Also, even if the existing ceiling equipment is installed only in one work booth, the operation of the ceiling equipment installed in one work booth can be extended to other work booths via the shared space. become. For example, if the ceiling equipment is an existing sprinkler installed in a common space, the water sprayed from the sprinkler will not flow into each work booth through the communication port and interfere with the operation of the sprinkler in each work booth. Gone. In addition, for example, if the ceiling equipment is an existing ventilation system installed in one work booth, not only the contaminated air in the one work booth, but also the contaminated air in the common space and other work booths will pass through the communication port. Ventilate with a ventilation system. Furthermore, for example, if the ceiling equipment is an existing air conditioner installed in one work booth, not only the air in the one work booth, but also the air in the common space and other work booths will be air-conditioned through the communication port. regulates temperature and humidity.

In addition, since the communication wall material faces the common space, the sound leaking from one work booth into the common space penetrates into the other work booth facing the common space through the communication port of the communication wall material. noise problem occurs. In two work booths facing each other across a common space, the sound leaking from the communication port of one work booth into the common space is reflected on the wall of the common space or is not reflected from the communication port of the other work booth. Although there is a possibility of intruding into the other work booth, in particular, the sound leaked from one work booth into the common space is not reflected (attenuated) on the wall of the common space It becomes a problem when intruding into

However, in the first and second inventions, a sound absorbing portion is provided on the inner surface of each of the two work booths facing each other across the shared space. Therefore, the sound generated in one work booth is absorbed by the sound absorbing part provided in the one work booth, and the volume of the sound leaking into the common space is reduced. In addition, even if the sound leaking from one work booth into the common space enters into another work booth facing each other across the common space, it is absorbed by the sound absorbing part provided in the other work booth and becomes even smaller. Become.

Further, in the first invention, in each work booth, at least a part of the sound absorbing part leaks into the common space from the communication port of the work booths facing each other across the common space, and the sound enters from the communication port without being reflected. It is provided in the opposing area where the light is incident without reflection. Therefore, even if the sound leaking from one work booth into the shared space does not reflect on the wall in the shared space and enters the other work booth facing each other across the shared space from the communication port, the other work will not be possible. The sound is absorbed by the sound absorbing portion provided in the opposing area on the inner surface of the booth and becomes even smaller.

Further, in the second invention, in each work booth, at least part of the sound absorbing part is provided at least in the upper part of the opposing side wall facing the communication wall member. Sound that leaks from one work booth into the common space and enters other work booths through the communication openings without being reflected on the walls in the common space shall It is more likely to be incident on the top of the opposing opposing sidewalls. Therefore, even if the sound leaking from one work booth into the shared space does not reflect on the wall in the shared space and enters the other work booth facing each other across the shared space from the communication port, the other work will not be possible. The sound is absorbed by the sound absorbing part provided on the upper side of the opposite side wall of the booth and becomes even smaller.

In other words, in the first and second inventions, in each work booth, at least a part of the sound absorbing part is placed in a position suitable for reducing the noise that enters the work booth without being attenuated in the common space upper part of the side wall). Therefore, the noise that enters through the communication port without being attenuated in the common space is absorbed by the sound absorbing part located in an appropriate position, which reduces the intelligibility of the voice transmitted to the worker working in a standing or sitting position. , the voice itself can be heard, but it is expected that the content will be difficult to hear. Therefore, even if there is a communication port communicating with the common space, the interior of the work booth can be maintained in a quiet and comfortable sound environment where workers can concentrate on their work.

Furthermore, according to the first and second inventions, a communication port is formed in one communication wall member of each work booth, and at least a part of the inner surface of each work booth is arranged in the opposing region or the upper part of the opposing side wall. Since the above sound environment can be created simply by providing a sound absorbing part in such a way that it is This eliminates the need for complicated design or large-scale construction work to change the structure of the ceiling in consideration of fire extinguishing equipment and ventilation equipment. As a result, the work booth can be easily installed at a low cost, and the installation efficiency is increased accordingly.

In a third aspect based on the first or second aspect, the sound absorbing portion increases the average sound absorption coefficient of the work booth in which the sound absorbing portion is provided by 0.05 or more within a range not exceeding 0.3. It is characterized by providing a sound absorbing part with a total area larger than the required area.

Here, the "average sound absorption coefficient" is calculated for each frequency band, and is obtained by dividing the equivalent sound absorption area in the frequency band by the total surface area. , refers to the arithmetic mean value of the average sound absorption coefficient in each of the 500 Hz and 1000 Hz bands of the work booth.

By the way, as a result of intensive research by the inventors of the present application, a sound absorbing part was provided so that at least a part of the inner surface of two work booths facing each other across a common space was arranged in the upper part of the facing area or the facing side wall. Above, if the amount of the sound absorbing part provided in each work booth is increased by 0.05 or more within the range where the average sound absorption coefficient of each work booth does not exceed 0.3, the sound pressure level difference between the two rooms will be 5 dBA. It was found that it is possible to raise the degree (equivalent to raising the D grade of sound insulation performance between two rooms by one rank). The "sound pressure level difference between two rooms" means that one of two work booths facing each other across a shared space is used as a sound source room with a sound source for measurement, while the other is used as a reception room for measurement. A test sound (approximately 90 dBA) with center frequencies of 125, 250, 500, 1000, 2000, and 4000 Hz is generated from the sound source, and sound pressure is measured in the sound source room and the receiving room with a sound level meter. Refers to the arithmetic mean value of the sound pressure level difference with the room.

Therefore, in the third invention, the inner surfaces of two work booths facing each other across a common space are provided with an area necessary to increase the average sound absorption coefficient of the work booths by 0.05 or more within a range not exceeding 0.3. At least a portion of the sound absorbing portion having the above total area is provided in the upper portion of the opposing region or the opposing side wall. By providing such amount of sound absorbing parts at the above positions, the average sound absorption coefficient of each work booth increases by 0.05 or more, and the sound insulation performance between two work booths facing each other across the common space is ranked 1 rank. can be raised. Therefore, the sound generated in one work booth is sufficiently absorbed by the appropriate amount (total area) of the sound absorbing part provided in the one work booth, so that the sound is transmitted from the one work booth through the communication port. reduce the volume of sound leaking into the common space. In addition, even if the sound leaking from one work booth into the common space does not reflect on the wall in the common space and enters the other work booth facing each other across the common space through the communication port, An appropriate amount (total area) of sound absorbing parts provided in the work booth will sufficiently absorb the noise. As a result, it is expected that the intelligibility of the voice transmitted to workers working in a standing or sitting position in other work booths will be lowered, and although the voice itself can be heard, it will be difficult to hear the content. Therefore, even if there is a communication port that communicates with the common space and there are work booths facing each other across the common space, the inside of the work booth can be quietly maintained in a comfortable sound environment where workers can concentrate on work.

A fourth invention is characterized in that, in the first or second invention, the sound absorbing portion is provided at a height of 700 mm or more.

In the fourth invention, the sound absorbing portion is provided at a height of 700 mm or more. Normally, the height of the top surface of a desk is about 700 mm, and it is assumed that the ears of a worker working in a standing or sitting position are at a height of 700 mm or more. Therefore, by providing the sound absorbing part at a height of 700 mm or more, the sound absorbing part is provided in the range on the desk. By arranging the sound absorbing portion in this way, it is possible to efficiently absorb the sound around the ear level of the worker in the sitting and standing positions. Therefore, it is possible to lower the clarity of the voice that enters the work booth (make it difficult to hear the content of the voice), thereby maintaining a more comfortable sound environment in the work booth.

According to a fifth invention, in the fourth invention, at least part of the sound absorbing portion is provided at a height of 900 mm or more and 1500 mm or less.

In the fifth invention, at least part of the sound absorbing portion is provided at a height of 900 mm or more and 1500 mm or less. It is assumed that the ears of a worker working in a sitting position are at a height of 900 mm or more and 1500 mm or less. Therefore, by providing at least part of the sound absorbing portion at a height of 900 mm or more and 1500 mm or less, it is possible to efficiently absorb the sound around the ear level of the worker working in a sitting position. Therefore, it is possible to lower the clarity of the voice that enters the work booth (make it difficult to hear the content of the voice), thereby maintaining a more comfortable sound environment in the work booth.

A sixth invention is characterized in that, in the first or second invention, at least part of the sound absorbing portion is composed of a plurality of detachable sound absorbing panels.

In the sixth invention, since at least part of the sound absorbing portion is composed of a plurality of detachable sound absorbing panels, the position and area of the sound absorbing portion can be easily adjusted by changing the number and positions of the sound absorbing panels. can be adjusted to

A seventh invention is characterized in that, in the first or second invention, at least part of the sound absorbing portion is a sound absorbing body integrally embedded in the partition wall material.

In the seventh invention, since at least a part of the sound absorbing part is composed of the sound absorbing body which is embedded in the partition wall material in advance, the inside of the work booth can be automatically Since a sound absorbing structure can be formed in the space, the installation work becomes easier.

According to an eighth invention, in the first or second invention, an opening transom having an opening in a frame is provided at the upper end portion of the communication wall material, and the communication opening is constituted by the opening between the opening transoms. It is characterized by being

In the eighth invention, since the opening transom is provided at the upper end of the communication wall material, the height of the communication wall material can be matched with that of the other partition wall material having the ceiling height. Work booths with uniform heights can be obtained.

In a ninth aspect based on the first or second aspect, the communication wall member has a height lower than the ceiling portion of the room, and the upper end portion of the communication wall member and the ceiling portion of the room are separated from each other. It is characterized in that the communication port is formed in the space between them.

In the ninth invention, the communication port for the work booth can be formed simply by making the communication wall material a so-called low partition whose ceiling height is lower than that of other partition wall materials, and the communication port can be formed. become easier.

According to a tenth invention, in the first or second invention, the high-ceiling wall material is fixed to the ceiling of the room.

In the tenth invention, since at least the high-ceiling wall material is fixed to the ceiling of the room, the work booth can be stably installed in the room.

In an eleventh invention based on the first or second invention, two shared facing walls facing the communicating wall members of the two work booths with the common space interposed therebetween are provided with A sound absorbing portion is provided at a position facing each communication port.

In the eleventh invention, the sound absorbing portion is provided not only on the inner surfaces of the two work booths, but also on the positions facing the communication ports of the two shared facing walls facing the communication wall materials of the two work booths across the common space. is to be established. With such a configuration, the sound leaking from the communication port of each work booth into the common space is absorbed by the sound absorbing portion provided at the position facing the communication port of the common facing wall. As a result, it is possible to suppress the sound leaking from one work booth into the shared space from entering other work booths. Therefore, the inside of the work booth can be maintained in a quieter and comfortable sound environment where the worker can concentrate on the work.

As described above, according to the present invention, two work booths are installed in a part of a room in a building so as to face each other across a common space. Operation of ceiling equipment installed in one of the work booth and the common space by providing a communication port that communicates between the work booth and the common space on the upper or upper side of one of the wall materials facing the common space. is extended to the other through the communication port, and a sound absorbing portion is provided in the opposing regions of the inner surfaces of the two work booths or at least the upper portions of the opposing side walls. As a result, the structure of the ceiling in the room where the work booth is installed can be maintained as it is, eliminating the need for large-scale construction and designing complicated ceiling work, while maintaining only the structure inside the work booth to create a single work booth. To suppress the sound (noise) generated in the work from intruding into other work booths facing each other across the common space with high volume and being transmitted to workers in other work booths with high volume. Therefore, it is possible to reduce the clarity of the voice transmitted to workers in other work booths (make it difficult to hear the content of the voice), thereby forming a comfortable sound environment in the work booth. can be done.

FIG. 1 is a plan view schematically showing a work booth installed indoors in Embodiment 1 of the present invention. FIG. 2 is an exploded view showing the second work booth with the partition wall material unfolded. FIG. 3 is an exploded view showing the third work booth with the partition wall member unfolded. FIG. 4 is an exploded view of the third work booth used in Test 3, which corresponds to FIG. FIG. 5 is a developed view of the third work booth used in Test 4, which corresponds to FIG. FIG. 6 is a developed view of the third work booth used in Test 5, which corresponds to FIG. FIG. 7 is a developed view of the third work booth used in Test 6, which corresponds to FIG. FIG. 8 is a developed view of the third work booth used in Test 7, which corresponds to FIG. FIG. 9 is an exploded view of the third work booth used in Test 8, which corresponds to FIG. 10 is a plan view equivalent to FIG. 1 of another work booth installation structure used in Test 9. FIG. 11 is a plan view equivalent to FIG. 1 of another work booth installation structure used in Test 10. FIG. FIG. 12 is a view corresponding to FIG. 2 showing the second embodiment. FIG. 13 is a view corresponding to FIG. 3 showing the second embodiment. FIG. 14 is a developed view of the third work booth used in Test 12, corresponding to FIG. FIG. 15 is a developed view of the third work booth used in Test 13, corresponding to FIG. FIG. 16 is a developed view of the third work booth used in Test 14, corresponding to FIG. FIG. 17 is an exploded view of the third work booth used in Test 15, corresponding to FIG. FIG. 18 is a view corresponding to FIG. 2 showing the third embodiment. FIG. 19 is a view corresponding to FIG. 2 showing the fourth embodiment. FIG. 20 is a view corresponding to FIG. 3 showing the fourth embodiment. FIG. 21 is a plan view schematically showing a work booth and a work area installed indoors in Embodiment 5 of the present invention. FIG. 22 is a plan view schematically showing a work booth and a work area installed indoors in Embodiment 6 of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail based on the drawings. The following descriptions of the embodiments are merely exemplifications in nature, and are not intended to limit the invention, its applications, or its uses at all.

<<Embodiment 1>>
In FIG. 1, R is a large room in a building where several to several dozen people can work with desks and chairs. The height is, for example, about 2000 mm to 3000 mm (2850 mm in the illustrated example). In the ceiling portion C of this room R, a plurality of ceiling devices A, A, . The ceiling equipment A is, for example, installed in a required number based on laws and regulations, and is, for example, a smoke or gas sensor, a sprinkler, a ventilator, etc. FIG. 1 illustrates a sprinkler.

In this way, in the room R in which the ceiling equipment A, A, . Six work booths B, B, . . . are partitioned and installed. In the following description, the six work booths B, B, . . . are numbered first to sixth work booths, and in FIG. showing.

The six work booths B, B, . . . have the same shape in plan view and the same floor area. These work booths B, B, . The work booths B, B, . One end of both rows in the row direction (side walls of the first and fourth work booths B, B) is formed by a part of the wall W on one side of the room R, and the other end in the row direction of both rows (side walls of the first The side walls of the 3rd and 6th work booths B, B) face the wall W on the other side of the room R with a space therebetween. As a result, a part of the room R is partitioned into six work booths B, B, . . . consists of a space between both rows of work booths B, B, .

In addition, in the ceiling portion C of the common space S, some of the ceiling devices A, A, . . . Since the ceiling devices A, A, . . . However, the work booths B, B, . . . are laid out so that the ceiling equipment A, A, .

Each work booth B has a rectangular floor with one side of 600 to 2000 mm. If one side of the floor has such a length, the floor area (floor area) of the work booth B is small (0.36 m ² or more and 4 m ² or less), and it is suitable for meetings with a small number of people and telework. Suitable for use. In the illustrated example, the work booth B has a frontage of 1500 mm and a depth of 1500 mm.

Each work booth B is rectangular in plan view by connecting a plurality of (three or four in this embodiment) partition wall materials 1 and 2 that are fixed to the floor F of the room R and stand up. formed into a shape. In each row of three work booths B, B, . In addition, the first and fourth work booths B and B located at one end side in the column direction of each row have four side walls surrounding each work booth B. The remaining three are composed of partition wall materials 1, 2, and 2. On the other hand, the 2nd, 3rd, 5th and 6th work booths B, B, . .

Each of the partition walls 1 and 2 has a vertically elongated plate-like shape (see FIG. 2), and is made of, for example, a non-combustible steel panel plate. Each partition wall material 1, 2 is fixed at its lower end to the floor F of the chamber R (or it may be placed only), and the side edge is the side edge of the adjacent other partition wall material 1, 2. is fixed to The side ends of the partition walls 1 and 2 adjacent to the wall W of the room R (the two partition walls 1 and 2 of the first and fourth work booths B and B) are It is fixed to the wall W of the .

One of a plurality of partition wall materials 1 and 2 for partitioning each work booth B is composed of a communication wall material 1 provided with a communication port 4 for communicating inside and outside the work booth B at its upper end. A partition wall material 2 other than the communication wall material 1 is composed of a high-ceiling wall material 2 having a height from the floor portion F of the room R to the ceiling portion C. As shown in FIG. Upper ends of the partition wall materials 1 and 2 (the communication wall material 1 and the high ceiling wall material 2) are fixed to the ceiling portion C. As shown in FIG.

In general, a structure in which walls are firmly fixed to a ceiling and a floor is regarded as a structure having a partition wall, and the surfaces of the walls and the like are required to be nonflammable. On the other hand, walls that are fixed only to the floor or walls of a room, or are placed on the floor are generally regarded as furniture, and their surfaces may be flame-retardant rather than non-combustible. In some cases, there is no need to consider noncombustibility and flame retardancy.

In this embodiment, the partition wall materials 1 and 2 are fixed to the ceiling portion C of the room R and regarded as a structure, so the partition wall materials 1 and 2 are made of steel, which is a noncombustible material. The partition wall materials 1 and 2 may be attached to the ceiling portion C with a minimum amount of fixing necessary for preventing overturning. This eliminates the need for reinforcement work for the ceiling portion C and the back side of the ceiling portion C.

In this way, since a plurality of partition wall materials 1, 2 for partitioning each work booth B are fixed to the ceiling portion C of the room R, the work booths B, B, . . . are stably installed inside the room R. be.

In the present invention, of the three work booths B, B, . . . in each row, the four work booths B, B, . Only one partition wall material (wall material for communication) 1 out of 2 faces the shared space S. On the other hand, among the three work booths B, B, . Two partition wall materials 1 and 2 face a shared space S. In the following, for the sake of convenience, a work booth B in which only one partition wall material 1 faces the shared space S is referred to as a one-sided booth B, and two partition wall materials 1 and 2 face the shared space S. The work booth B is called a two-sided facing booth B. The one-sided facing booth B and the two-sided facing booth B have substantially the same configuration, but differ only in the arrangement position of the doorway.

[1 face-to-face booth]
FIG. 2 shows the second and fifth work booths B and B, which are one-sided facing booths B, with four side walls (partition wall materials 1 and 2) unfolded, viewed from inside the work booth B. It is. Although not shown, the first and fourth work booths B and B are also one-sided facing booths B similar to the second and fifth work booths B and B. In the first and fourth work booths B, B, one of the four side walls is made up of part of the wall W of the room R, and all four side walls are made up of the partition walls 1, 2. Only the second and fifth work booths B and B are different from the second and fifth work booths B and B, so only the second and fifth work booths B and B will be described below as the one-sided facing booth B. FIG.

In the booth B facing one side, of the partition walls 1 and 2 constituting the side walls, the partition wall 1 facing the common space S is the only one facing the common space S. It is configured to be a communication wall material 1 provided with a communication port 4 for communication.

The communication wall material 1 is fixed to the ceiling part C at its upper end like the high ceiling wall material 2, but is provided with a communication port 4 for communicating the inner space of the work booth B with the common space S at its upper end. It is Specifically, an opening 5b having an opening 5b in a rectangular frame 5a is integrally provided at the upper end portion of the wall member 1 for communication. A communication port 4 is configured. In general, a transom has an opening formed in a frame, and the opening is covered with a partition plate made of acrylic or glass, a louver, or the like. An open one is used. The height h of the opening 5b (communication port 4) of the transom 5 is desirably 500 to 700 mm, and the lateral width thereof is desirably close to the entire width of the wall material 1 for communication. It is sufficient if the function can be fulfilled from the viewpoint of disaster prevention, ventilation, air conditioning, etc.

As described above, in the one-sided facing booth B, one of the plurality of partition wall members 1 and 2 constituting the side wall is constituted by the communication wall member 1, and the communication wall member 1 is the work booth B, B, . As a result, each one-sided facing booth B has a structure in which the communication port 4 (the opening 5b of the opening transom 5) of the communication wall material 1 faces the ceiling devices A, A, . . . , and the operation of the ceiling devices A, A, . . . That is, when the ceiling equipment A is a sprinkler, water from the sprinkler is discharged into the work booth B through the communication port 4, and when the ceiling equipment A is a ventilator, the contaminated air in the work booth B is discharged through the communication port 4. When the ceiling equipment A is an air conditioner, the conditioned air blown out from the air conditioner is discharged into the work booth B through the communication port 4. When the ceiling equipment A is a sensor, Smoke, gas, etc. in the work booth B reach the sensor through the communication port 4. - 特許庁

In the one-sided facing booth B, a sound absorbing part 10 is provided at least in the upper part of the inner surface of the work booth B on the opposite side wall 3 made of the partition wall material 2 facing the communication wall material 1 . The sound absorbing portion 10 is provided so as to face the communication port 4 such that the upper end thereof is located in a range 200 mm below the upper end of the opposing side wall 3 (the ceiling portion C of the chamber R). In addition, the lower end of the sound absorbing portion 10 is at a height position H1 (1900 mm from the floor F in the first embodiment) which is two-thirds of the ceiling height H (2850 mm in the first embodiment) of the room R. position). That is, the sound absorbing part 10 is located on the inner surface of the work booth B of the opposing side wall 3 from the height position facing the communication port 4 downward to a position lower than the height position H1, which is two-thirds of the ceiling height H of the room R. are set across.

Specifically, in Embodiment 1, the sound absorbing portion 10 is formed to have a size of 1800 mm×1350 mm, and the upper end is located about 10 mm below the upper end of the inner surface of the work booth B of the opposing side wall 3 (the ceiling portion C of the room R). The left end and the right end are provided so as to be positioned about 75 mm inside from the left and right side ends of the inner surface of the work booth B of the opposing side wall 3 respectively. The sound absorbing part 10 may be provided so that the upper end is positioned at the ceiling part C of the room R, or may be formed in a size that covers the entire lateral width of the inner surface of the work booth 3 of the opposing side wall 3. good. The area of the sound absorbing portion 10 can be expanded by lowering the lower end position.

The sound absorbing part 10 is preferably provided at a height of 700 mm or more from the floor F, and at least a part thereof is preferably provided at a height of 900 mm or more and 1500 mm or less from the floor F. In Embodiment 1, the lower end of the sound absorbing portion 10 is located at a height of about 1040 mm from the floor F. Therefore, in Embodiment 1, the sound absorbing part 10 is provided at a height of 700 mm or more from the floor F, and at least a part thereof is provided at a height of 900 mm or more and 1500 mm or less from the floor F.

The sound absorbing section 10 is provided on the inner surface of each work booth 10 so that the total area is equal to or larger than a pre-calculated required area that varies depending on the volume of the work booth B and the installation position of the sound absorbing section 10 . For example, as in the first embodiment, the inner surface of the opposing side wall 3 has a sound absorbing performance with a reverberant room method sound absorption coefficient of 0.8 or more in the 500 Hz band and 0.9 or more in the 1 kHz band or more. When installing the unit 10, the required area is 1.2 to 3.6 m ² in the work booth B of the present embodiment 1 with a volume of 6.5 m ³ , and in the present embodiment 1, the total area is 1.8 m ² A sound absorbing portion 10 is provided on the inner surface of the opposing side wall 3 .

The required area increases as the volume of the work booth B increases. Further, the sound absorbing effect (noise countermeasure effect) depending on the installation position of the sound absorbing part 10 depends on the work environment in the work booth B. When installing, the inner surface of the opposing side wall 3 facing the communication port 4 is most effective. It has been found by tests that the range (the upper portion obtained by vertically dividing the inner surface of the opposing side wall 3 into three equal parts) has the highest sound absorbing effect. Next, the range from the lower end of the communication port 4 on the inner surface of the communication wall material 1 to the height position H1 where the height from the floor surface is two-thirds of the ceiling height, and the height from the floor surface on the inner surface of the opposing side wall 3 The range from the height position H1 of 2/3 of the height of the ceiling to the height position of 1/3 (middle section where the inner surface of the opposing side wall is vertically divided into 3 equal parts), the floor of the inner surface of the opposing side wall 3 It was found that the sound absorption effect decreases in the order from the height from the surface to the floor surface (the lower part where the inner surface of the opposite side wall is vertically divided into three equal parts). ing. For example, the necessary area is calculated according to the volume of the work booth B and the installation position (weight) of the sound absorbing part 10, with weights that decrease in order of sound absorption effect for the plurality of installation positions. good.

The sound absorbing portion 10 is composed of a plurality of sound absorbing panels 11, 11, . . . arranged side by side. Although not shown, each sound absorbing panel 11 has a rectangular panel shape with a sound absorbing material attached to the front surface, and a magnet (magnet) that acts magnetically on the back side is provided. is detachably fixed to the inner surface of the partition wall material 2 (opposing side wall 3). A hook-and-loop fastener may be used instead of the magnet, and the sound absorbing panel 11 can be detachably fixed to the inner surface of the opposing side wall 3 in the same manner. Further, if the purpose is to use the work booth B for a long period of time, the sound absorbing panel 11 may be adhered with a double-faced tape or an adhesive instead of using the detachable sound absorbing panel 11 .

For each sound absorbing panel 11, for example, a square sound absorbing panel of 300 mm square, 450 mm square, or 600 mm square can be used. 2, 12 450 mm square sound absorbing panels 11, 11, . The number and arrangement of the sound absorbing panels 11 may be changed according to the inner space of the opposing side wall 3 and the calculated required area. As the sound absorbing panel 11, in the case of 450 mm square, it is suitable to use, for example, the trade name "Offtone Magnet Panel N" manufactured by Daiken Kogyo Co., Ltd.

In addition, in the one-sided facing booth B, the sound absorbing part 10 is provided for a total area larger than the area required to increase the average sound absorption coefficient of each work booth B by 0.05 or more within a range not exceeding 0.3. ing. The "average sound absorption coefficient" is calculated for each frequency band, and is obtained by dividing the equivalent sound absorption area in the frequency band by the total surface area. Refers to the arithmetic mean value of the average sound absorption coefficient in each of the 500 Hz band and 1000 Hz band of each work booth B.

Specifically, in the first embodiment, the average sound absorption coefficient of each work booth B before installation of the sound absorbing section 10 is 0.145, and the total area of the sound absorbing section on the inner surface of each work booth B is 2.4 m ² . 10 (12 sound absorbing panels 11, 11, . . . of 450 mm square) are provided to increase the average sound absorbing coefficient by 0.081 (0.05 or more). By providing the sound absorbing portion 10 having such a total area, the average sound absorption coefficient of each work booth B is improved to 0.226 (0.2 or more and 0.3 or less).

In the one-sided booth B, the communication wall member 1 is provided with an entrance 15 that connects the interior of the work booth B with the shared space S. Users can enter the shared space S through this entrance 15. from the work booth B or from the work booth B to the shared space S. This entrance/exit 15 is opened and closed by an entrance/exit door 16 .

In FIG. 1, 21 is a desk installed in each work booth B on the side opposite to the doorway 15 (the innermost side of the work booth B), and 22 is a chair. The lower end of the sound absorbing part 10 is desirably located above the desk 21, but it is not essential.

[Face-to-face booth on two sides]
FIG. 3 shows the third work booth B, which is a two-sided facing booth B, with four side walls (partition wall members 1 and 2) unfolded and viewed from inside the work booth B. FIG. Although not shown, the sixth work booth B is also a two-sided facing booth B similar to the third work booth B. The only difference is that the left and right are reversed in FIG. , and only the third work booth B as a two-sided facing booth B will be described.

In the two-sided facing booth B, two adjacent partition walls 1 and 2 face a common space S outside the work booth B. - 特許庁One of the two partition wall materials 1 and 2 facing the shared space S is a space adjacent in the row direction of each row of the work booths B, B, . . . , and another partition wall material 2 faces the space between both rows of work booths B, B, . In the two-sided facing booth B, of the two partition wall materials 1 and 2 facing the shared space S, the partition wall material 1 facing the space adjacent in the row direction of each row of the work booths B, B, . , communication wall material 1. The communication wall material 1 is constructed in the same manner as the communication wall material 1 of the booth B facing one side.

As described above, in the two-sided booth B, as in the one-sided booth B, one of the plurality of partition wall members 1 and 2 constituting the side walls is composed of the communication wall member 1, and the connecting wall member 1 A common wall material 1 is arranged so as to face a shared space S (a space adjacent in the row direction of each row of work booths B, B, . . . ). As a result, each two-sided facing booth B has a structure in which the communication port 4 (opening 5b of the opening transom 5) of the communication wall material 1 faces the ceiling equipment A, A, . . . , and the operation of the ceiling devices A, A, . . . That is, if the ceiling equipment A is a sprinkler, water from the sprinkler is discharged into the work booth B through the communication port 4, and if it is a ventilation device, air from the ventilation device flows into the work booth B through the communication port 4. However, when the ceiling equipment A is a sensor, smoke, gas, etc. in the work booth B reach the sensor through the communication port 4 .

Also in the two-sided facing booth B, a sound absorbing portion 10 is provided at least in the upper part of the inner surface of the work booth B in the opposing side wall 3 made of the partition wall member 2 facing the communication wall member 1 . The sound absorbing section 10 is configured and arranged in the same manner as the sound absorbing section 10 of the booth B facing one side.

In the two-sided facing booth B, of the two adjacent partition wall materials 1 and 2 facing the common space S, the partition wall material 2 (high ceiling wall material 2) that is not the communication wall material 1 is attached to the work booth. A doorway 15 is provided to connect the inside of B with the shared space S, and users can enter the work booth B from the shared space S or exit the work booth B from the work booth B through the doorway 15. It has become. This entrance/exit 15 is opened and closed by an entrance/exit door 16 .

As shown in FIG. 1, also in the two-sided booth B, a desk 21 and a chair 22 are installed on the opposite side of the doorway 15 in each work booth B (the innermost side of the work booth B).

-Action-
In Embodiment 1, a part of the room R in the building is partitioned into, for example, six work booths B, B, . . . , some of the ceiling devices A, A, . . . already installed in the room R are arranged. Each of the six work booths B, B, . .36 m ² or more and 4 m ² or less. One of the plurality of partition walls 1 and 2 forming each work booth B has, at its upper end, a communication port 4 (opening of the transom 5) that communicates the space inside the work booth B with the shared space S. 5b). Each of the six work booths B, B, . With such a configuration, the inside of each work booth B communicates with the common space S through the communication port 4 of the communication wall material 1, and the above ceiling devices A, A, . , the operation acts in each work booth B through the communication port 4. As shown in FIG. For example, if the ceiling equipment A is a sprinkler, the water sprayed from the sprinkler also falls into each work booth B through the communication ports 4, 4, and the operation of the sprinkler in each work booth B is not hindered. , the effect associated with the fire extinguishing operation is ensured in the work booth B as well. Further, for example, if the ceiling equipment A is an existing ventilation device, not only the contaminated air in the common space S but also the contaminated air in each work booth B is ventilated by the ventilation device through the communication port 4 . Furthermore, for example, if the ceiling equipment A is an existing air conditioner, the temperature and humidity of not only the air in the shared space S but also the air in each work booth B is adjusted by the air conditioner through the communication port 4 .

Thus, the operation of the ceiling equipment A located in the ceiling portion C of the common space S is achieved only by forming the communication port 4 by the opening 5b of the opening transom 5 in the partition wall material 1 facing the common space S of the work booth B. can be used in each work booth B, the common space S and the ceiling part C of each work booth B are the same as the original room R before the work booths B, B, . . . The inner ceiling portion C can be maintained as it is, and large-scale construction for changing the structure of the ceiling portion C is completely unnecessary. In particular, as the ceiling equipment A, it is not necessary to separately add an expensive ventilation device or disaster prevention equipment (sprinkler, fire alarm). Thus, the work booths B, B, .

On the other hand, by configuring one partition wall material 1 facing the shared space S as described above with the communication wall material 1 having the communication port 4, the sound leaked from one work booth B to the shared space S will intrude into another work booth B through the communication port 4, causing a noise problem.

However, in the work booth B, a sound absorbing portion 10 is provided at least in the upper portion of the opposing side wall 3 facing the communicating wall material 1 having the communicating port 4 . Therefore, the sound generated in one work booth B is absorbed by the sound absorbing part 10 provided in the one work booth B, and the volume of the sound leaking into the common space S is reduced. In addition, the sound leaking from one work booth B into the common space S enters the other work booth B through the communication port 4, and is provided at a position facing the communication port 4 on the inner surface of the other work booth B. The noise is absorbed by the sound absorbing portion 10 and becomes even smaller.

By the way, as a result of diligent research by the inventors of the present application, it was found that by providing the sound absorbing part 10 in each of the two work booths B, B facing each other across the common space S, the average sound absorption coefficient can be reduced to a range not exceeding 0.3. is increased by 0.1 or more, the sound pressure level difference between the two rooms can be increased by about 5 dBA (equivalent to raising the sound insulation performance class D between the two rooms by one rank). The "sound pressure level difference between the two rooms" means that one of the two work booths B, B facing each other across the shared space S is set up with a sound source for measurement, and the other is used as a receiving room. Then, a test sound (about 90 dBA) with a center frequency of 125, 250, 500, 1000, 2000, and 4000 Hz is generated from the sound source for measurement, and the sound pressure is measured in the sound source room and the receiving room with a sound level meter. Refers to the arithmetic mean value of the sound pressure level difference between the sound source room and the receiving room.

It should be noted that the above-mentioned "two work booths B, B facing each other across the common space S" can prevent the sound leaked from the communication port 4 of one work booth B into the common space S from being reflected. Two work booths B, B arranged at a position where there is a possibility of intrusion into the other work booth B from the communication port 4 of the work booth.

As a result of further research, it was found that at least a part of the inner surfaces of the two work booths B facing each other across the common space S was formed on the upper part of the opposing side wall 3 (communication of the work booth B facing each other across the common space S). After providing the sound absorbing part 10 so as to be arranged in the opposite area of the inner surface of the work booth B where the sound that leaks from the opening 4 into the common space S and enters from the communication opening 4 without reflection is incident without reflection). , If the amount of the sound absorbing part 10 provided in each work booth B is increased by 0.05 or more within the range where the average sound absorption coefficient of each work booth B does not exceed 0.3, the sound pressure level difference between the two rooms is It was found that it is possible to raise the sound insulation performance by about 5 dBA (equivalent to raising the sound insulation performance class D between the two rooms by one rank).

Therefore, both of the two work booths B and B (in the first embodiment, the first and fourth work booths B and B, and the second and fifth work booths B and B) facing each other across the common space S The inner surface is provided with a sound absorbing portion 10 having a total area larger than the area required to increase the average sound absorption coefficient of the work booth B by 0.05 or more within a range not exceeding 0.3. By providing such an amount of sound absorbing parts 10, the sound generated in one work booth B is sufficiently reduced by an appropriate amount (total area) of sound absorbing parts 10 provided in the one work booth B. Since the sound is absorbed, the volume of sound leaking from one work booth B to the common space S through the communication port 4 is reduced. In addition, the sound leaked from one work booth B into the common space S is not reflected (attenuated) by the walls in the common space S, and is not reflected (attenuated) by other work booths facing each other across the common space S through the communication port 4. Even if the sound enters into B, it will be sufficiently absorbed by the appropriate amount (total area) of the sound absorbing portion 10 provided in the other work booth B. As a result, it is expected that the clarity of the voice transmitted to the worker working in the standing or sitting position in the other work booth B will be lowered, and although the voice itself can be heard, it will be difficult to hear the content. As a result, the inside of the work booth B is maintained in a quiet and comfortable sound environment in which workers can concentrate on their work.

－Comparison test－
In order to verify the effect of improving the sound environment by providing the sound absorbing part 10 on the inner surface of the opposing side wall 3 in the work booth B, seven types of different arrangements of the sound absorbing part 10 were obtained by modifying the two-sided facing booth B shown in FIG. Tests 1 to 8 were performed by manufacturing work booths B0 to B6.

[Work booths B0 to B6]
The work booth B0 (not shown) does not have the sound absorbing part 10 on the inner surface of the work booth B of the opposing side wall 3 .

The work booth B1, as shown in FIG. 4, has a sound absorbing portion 10 provided on the inner surface of the work booth B of the opposing side wall 3, which is smaller than that shown in FIG. Specifically, in the work booth B1, the sound absorbing section 10 is composed of six sound absorbing panels 11, 11, . In the work booth B1, the upper end of the sound absorbing part 10 is positioned at the same height as that shown in FIG. provided to be located.

The work booth B2, as shown in FIG. 5, has a sound absorbing portion 10 provided on the inner surface of the work booth B of the opposing side wall 3, which is smaller than that shown in FIG. Specifically, in FIG. 5, the sound absorbing section 10 is composed of nine sound absorbing panels 11, 11, . In the work booth B2, the upper end of the sound absorbing part 10 is positioned at the same height as that shown in FIG. It is provided so as to be located at a position higher than the lower end of the sound absorbing portion 10 shown in FIG.

The work booth B3, as shown in FIG. 6, has a sound absorbing portion 10 provided on the inner surface of the work booth B of the opposing side wall 3, which is larger than that shown in FIG. Specifically, in FIG. 6, the sound absorbing section 10 is composed of 12 sound absorbing panels 11, 11, . In the work booth B3, the sound absorbing part 10 is provided so that the upper end is positioned at the same height as that shown in FIG. there is

As shown in FIG. 7, the work booth B4 has a smaller sound absorbing portion 10 provided on the inner surface of the work booth B on the opposite side wall 3 than that shown in FIG. Specifically, in FIG. 7, the sound absorbing section 10 is composed of nine sound absorbing panels 11, 11, . In the work booth B4, the lower end of the sound absorbing part 10 is located at a position lower than the height position H1, which is two-thirds of the ceiling height H of the room R, while the upper end is in communication. It is provided so as to be located at a position lower than the lower end of the mouth 4. - 特許庁Therefore, in the work booth B4, the sound absorbing portion 10 is not provided in the portion of the opposite side wall 3 facing the communication port 4 on the inner surface of the work booth B. As shown in FIG.

As shown in FIG. 8, the work booth B5 has a sound absorbing part 10 smaller than that shown in FIG. It is provided on the inner surface of the work booth B. Specifically, in FIG. 8, the sound absorbing section 10 is composed of nine sound absorbing panels 11, 11, . . . similarly to the sound absorbing section 10 shown in FIG. The installation position of the sound absorbing part 10 on the inner surface of the work booth B of the partition wall material 2 is the same as the installation position of the sound absorbing part 10 on the inner surface of the work booth B on the opposite side wall 3 of the work booth B2 shown in FIG.

As shown in FIG. 9, the work booth B6 has a sound absorbing part 10 smaller than that shown in FIG. It is a thing. Specifically, in FIG. 9, the sound absorbing section 10 is composed of nine sound absorbing panels 11, 11, . . . similarly to the sound absorbing section 10 shown in FIG. In the work booth B6, the sound absorbing part 10 is provided immediately below the communication port 4 on the inner surface of the work booth B of the wall member 1 for communication.

[Tests 1-8]
Tests 1 to 8 below were performed.

(Test 1)
A sound source for measurement (about 90 dBA) is installed in one of the second work booth B (Fig. 2) and the third work booth B (Fig. 3) of the work booth installation structure shown in Fig. 1 to form a sound source room. Using the other room as a receiving room, generate a test sound (about 90 dBA) with center frequencies of 125, 250, 500, 1000, 2000, and 4000 Hz from the sound source for measurement, measure the sound pressure in the sound source room and the receiving room with a sound level meter, The sound pressure level difference between rooms (arithmetic mean value of the sound pressure level difference between the sound source room and the receiving room in each band) was obtained.

As a result of Test 1, the amount of improvement in the sound pressure level difference (compared to the case where neither work booth B is provided with the sound absorbing part 10) is the same when sound is emitted from either the second or third work booth B. It was 1 dBA or more and less than 3 dBA, and was large enough to make conversation difficult to hear.

(Test 2)
In the work booth installation structure shown in FIG. 1, the third work booth B was changed to work booth B0, and the same test as Test 1 was conducted between the second and third work booths B and B0.

As a result of Test 2, when the sound was transmitted from the third work booth B0, the improvement amount of the sound pressure level difference was 1 dBA or more and less than 3 dBA, but when the sound was transmitted from the second work booth B, The amount of improvement in the difference in sound pressure level was less than 1 dBA, which was large enough to distinguish the conversation of the originating side when the receiving side listened carefully.

(Test 3)
In the work booth installation structure shown in FIG. 1, the third work booth B was changed to work booth B1 (FIG. 4), and the same test as Test 1 was conducted between the second and third work booths B and B1.

As a result of Test 3, when the sound was transmitted from the third work booth B1, the improvement amount of the sound pressure level difference was 1 dBA or more and less than 3 dBA, but when the sound was transmitted from the second work booth B, The amount of improvement in sound pressure level difference was less than 1 dBA.

(Test 4)
In the work booth installation structure shown in FIG. 1, the third work booth B was changed to work booth B2 (FIG. 5), and the same test as Test 1 was conducted between the second and third work booths B and B2.

As a result of Test 4, the amount of improvement in the difference in sound pressure level was 1 dBA or more and less than 3 dBA when sound was emitted from any of the second and third work booths B and B2.

(Test 5)
In the work booth installation structure shown in FIG. 1, the third work booth B was changed to work booth B3 (FIG. 6), and the same test as Test 1 was conducted between the second and third work booths B and B3.

As a result of Test 5, when the sound was transmitted from the third work booth B3, the improvement amount of the sound pressure level difference was 1 dBA or more and less than 3 dBA, but when the sound was transmitted from the second work booth B, The amount of improvement in sound pressure level difference was 3 dBA or more and less than 5 dBA.

(Test 6)
In the work booth installation structure shown in FIG. 1, the third work booth B was changed to work booth B4 (FIG. 7), and the same test as Test 1 was conducted between the second and third work booths B and B4.

As a result of Test 6, when the sound was transmitted from the third work booth B4, the improvement amount of the sound pressure level difference was 1 dBA or more and less than 3 dBA, but when the sound was transmitted from the second work booth B, The amount of improvement in sound pressure level difference was less than 1 dBA.

(Test 7)
In the work booth installation structure shown in FIG. 1, the third work booth B was changed to work booth B5 (FIG. 8), and the same test as test 1 was conducted between the second and third work booths B and B5.

As a result of Test 7, when the sound was transmitted from the third work booth B5, the improvement amount of the sound pressure level difference was 1 dBA or more and less than 3 dBA, but when the sound was transmitted from the second work booth B, The amount of improvement in sound pressure level difference was less than 1 dBA.

(Test 8)
In the work booth installation structure shown in FIG. 1, the third work booth B was changed to work booth B6 (FIG. 9), and the same test as Test 1 was conducted between the second and third work booths B and B6.

As a result of Test 8, when the sound was transmitted from the third work booth B6, the improvement amount of the sound pressure level difference was 1 dBA or more and less than 3 dBA, but when the sound was transmitted from the second work booth B, The amount of improvement in sound pressure level difference was less than 1 dBA.

[Verification of test results]
From the results of Tests 1 and 2, it was found that in the work booth B in which the sound absorbing part 10 was provided, only sound of a magnitude that made it difficult to hear conversations in other work booths B was transmitted, but the sound absorbing part 10 was provided. It was found that, if one listens carefully, the sound in the work booth B0, which is not surrounded by other work booths, is loud enough to distinguish conversations in other work booths B0. As a result, the sound absorbing part 10 has the effect of reducing the sound that enters the work booth B from the outside, rather than reducing the sound that leaks out from the work booth B in which the sound absorbing part 10 is installed. understood.

Further, from the results of Tests 1, 3 to 6, on the inner surface of the work booth B of the opposing side wall 3, the sound absorbing part 10 moves downward from the height position facing the communication port 4 to a height of 3/3 of the ceiling height H of the room R. In the work booths B (FIGS. 2, 3, 5, and 6) provided over a position lower than the height position H1 of No. 2, there is only a level of sound that makes it difficult to hear conversations in other work booths B. Although it is not transmitted, the sound absorbing part 10 is small (the lower end is higher than the height position H1, which is two-thirds of the ceiling height H). In the work booth B4 (Fig. 7), in which the sound absorbing part 10 is not provided in the part facing the It turned out that the sound of the loudness was transmitted. In other words, in order to form a work booth B with a comfortable sound environment, the sound absorbing part 10 is moved downward from the height position facing the communication port 4 on the inner surface of the work booth B of the opposing side wall 3 to the ceiling height of the room R. It has been verified that it must be provided over a position lower than the height position H1, which is two-thirds of H.

Further, from the results of Tests 4, 7, and 8, it was found that even if the sound absorbing portion 10 was provided not on the opposing side wall 3 but on the communication wall member 1 or the inner surface of the partition wall member 2 adjacent to the communication wall member 1, the sound absorption effect was high. was small, and it was found that the work booth B with a comfortable sound environment could not be formed.

Furthermore, during tests 1 to 8, it was verified whether the room sound environment in each work booth B was good (whether the person in the work booth B could clearly hear the voice uttered in the work booth B). In the work booth B (FIGS. 2 to 9) provided with 10, the voices uttered in the work booth B could be clearly heard by the people in the work booth B, and the indoor sound environment was good. On the other hand, in the work booth B0 without the sound absorbing part 10, it was found that the voices spoken in the work booth B echoed and were difficult to hear.

-Verification test-
Also, tests 9 and 10 were conducted on the work booth installation structure shown in FIGS.
(Verification 1) The average sound absorption coefficient is increased by 0.1 or more within a range not exceeding 0.3 by providing the sound absorbing sections 10 on both inner surfaces of the two work booths B facing each other across the common space S. , the sound pressure level difference between the two rooms can be increased by about 5 dBA (equivalent to raising the sound insulation performance D grade between the two rooms by one rank). A sound absorbing part 10 is provided on both inner surfaces of the two work booths B, B facing each other so that at least a part of it is arranged on the upper part of the opposing side wall 3, and the amount of the sound absorbing part 10 provided in each work booth B is an amount that increases the average sound absorption coefficient of each work booth B by 0.05 or more within a range that does not exceed 0.3, the sound pressure level difference between the two rooms should be increased by about 5 dBA (sound insulation performance D between the two rooms (equivalent to raising the grade by 1 rank), which is the effect of improving the sound environment

[Work booth installation structure for testing]
In the work booth installation structure shown in FIG. 10, as in the work booth installation structure shown in FIG. 1, six first to sixth work booths B, B, . are separated and installed. In the work booth installation structure shown in FIG. 1, the third and sixth work booths B and B, which were two-sided facing booth B, are configured as one-sided facing booth B in the work booth installation structure shown in FIG. A doorway 15 is formed in the wall member 1 for communication in which the port 4 is formed. In FIG. 10, each work booth B has a frontage of 1655 mm, a depth of 1700 mm and a height of 2430 mm. In the work booth installation structure shown in FIG. 10, in each work booth B, the sound absorbing part 10 is provided on the inner surface of the facing side wall 3 and also on the two side walls adjacent to the communication wall material 1 (the partition wall material 2 or the wall of the room R). It is also provided on the inner surface of the portion W). The detailed internal configuration of each work booth B is substantially the same as that of the work booth installation structure in FIG.

In the work booth installation structure shown in FIG. 11, four work booths B, B, . In the following description, the four work booths B, B, . showing.

As shown in FIG. 11, the four work booths B, B, . , two work booths B and B are arranged in a straight line to form two rows parallel to each other, and an interval is provided between the work booths B and B in both rows. One end of both rows in the row direction (side walls of the eleventh and thirteenth work booths B, B) is formed by a part of the wall portion W on one side of the room R. As shown in FIG. A part of the room R is partitioned into four work booths B, B, . In FIG. 11, each work booth B has a frontage of 1400 mm, a depth of 1750 mm and a height of 2430 mm. In the work booth installation structure shown in FIG. 11, in each work booth B, the sound absorbing part 10 is not provided on the opposing side wall 3, but on the two side walls (partition wall material 2 or room R) adjacent to the communication wall material 1. It is provided on the inner surface of the wall W). The detailed internal configuration of each work booth B is substantially the same as that of the work booth installation structure in FIG.

[Tests 9 and 10]
Tests 9 and 10 are described below. 10 and 11, where Tests 9 and 10 are carried out. In the work booth B with a floor area of 0.36 m ² or more and 4 m ^{2 or} less, if the average sound absorption coefficient is less than 0.15, the sound that tends to interfere with conversation When the average sound absorption coefficient is 0.15 or more and less than 0.2, the sound is somewhat reverberating, but the sound is less likely to interfere with conversation. If the sound is ideal and the average sound absorption coefficient exceeds 0.3, the voice uttered in the work booth B may be too absorbed and difficult to speak (even if you intend to speak loudly, it may be difficult to hear). I know. In addition, in the work booth B having a floor area of 0.36 m ² or more and 4 m ^{2 or} less shown in FIGS. If no sound absorbing part 10 is provided in the work booth B, the average sound absorption coefficient of each work booth B will be 0.1 or more and less than 0.2, and the sound insulation performance class D between the two rooms will be D-10 or D-15. there is

(Test 9)
In the work booth installation structure shown in FIG. 10, the sound source for measurement is installed in the sixth work booth B, which is one of the third and sixth work booths B and B facing each other across the common space S, to form a sound source room. On the other hand, the other is used as a reception room, and a test sound (about 90 dBA) with a center frequency of 125, 250, 500, 1000, 2000, and 4000 Hz is generated from the sound source for measurement, and a sound level meter is used as the sixth work booth B (sound source room). The sound pressure was measured in the third work booth B (receiving room), and the sound pressure level difference between the two rooms (the arithmetic mean value of the sound pressure level difference between the sound source room and the receiving room in each band) was obtained. Also, from the reverberation time (the time from when the sound stops until the sound pressure is attenuated by 60 dB) and the volume and total surface area of each work booth, the average sound absorption coefficient of each work booth (average sound absorption in each of the 500 Hz band and 1000 Hz band Arithmetic mean of ratios) was obtained.

In Test 9, when the sound absorbing part 10 is not provided on the inner surface of both the third and sixth work booths B and B (Test 9-1), both the third and sixth work booths B and B When the sound absorbing part ¹⁰ (six 450 mm square sound absorbing panels 11, 11, . When a sound absorbing part 10 (12 sound absorbing panels 11, 11, ... of 450 mm square) with a total area of 2.4 m ² is provided on both inner surfaces (Test 9-3), the 3rd and 6th work booths When the sound absorbing ^part 10 (18 sound absorbing panels 11, 11, . When sound absorbing parts 10 (24 450 mm square sound absorbing panels 11, 11, ...) with a total area of 4.8 m ² are provided on both inner surfaces of work booths B, B (Test 9-5), 5 Followed the case on the street. In Tests 9-2 and 9-3, the sound absorbing panels 11, 11, . It is also provided in two adjacent partition wall members 2, 2. - 特許庁In Test 9, when the sound absorbing portion 10 was provided, at least part of the sound absorbing portion 10 was provided on the upper portion of the opposing side wall 3 (at the position corresponding to the communication port 4).

As a result of Test 9-1, the average sound absorption coefficient of the third work booth B (receiving room) was 0.145, and the sound pressure level difference between the two rooms was 6.2 dBA. As a result of Test 9-2, the average sound absorption coefficient of the third work booth B (receiving room) was 0.191, and the sound pressure level difference between the two rooms was 12.4 dBA. As a result of Test 9-3, the average sound absorption coefficient of the third work booth B (receiving room) was 0.226, and the sound pressure level difference between the two rooms was 12.8 dBA. As a result of Test 9-4, the average sound absorption coefficient of the third work booth B (receiving room) was 0.247, and the sound pressure level difference between the two rooms was 14.5 dBA. As a result of Test 9-5, the average sound absorption coefficient of the third work booth B (receiving room) was 0.263, and the sound pressure level difference between the two rooms was 16.5 dBA.

In the work booth installation structure shown in ^FIG . The average sound absorption coefficient increased by 0.046 and the sound pressure level difference between the two rooms increased by 6.2 dBA compared to the case where the sound absorbing part 10 was not provided on the inner surface of the work booths B, B. If a sound absorbing part 10 with a total area of 2.4 m ² is provided on both the inner surfaces of the third and sixth work booths B and B facing each other across the common space S, the sound absorbing part 10 is provided on the inner surfaces of both work booths B and B. The average sound absorption coefficient increased by 0.081 and the sound pressure level difference between the two rooms increased by 6.6 dBA compared to the case where 10 was not provided. If a sound absorbing part 10 having a total area of 3.6 m ² is provided on both the inner surfaces of the third and sixth work booths B and B facing each other across the common space S, a sound absorbing part 10 is provided on the inner surfaces of both work booths B and B. The average sound absorption coefficient increased by 0.102 and the sound pressure level difference between the two rooms increased by 8.3 dBA compared to the case where 10 was not provided. If a sound absorbing part 10 with a total area of 4.8 m ² is provided on both the inner surfaces of the third and sixth work booths B and B facing each other across the common space S, a sound absorbing part 10 is provided on the inner surfaces of both work booths B and B The average sound absorption coefficient increased by 0.118 and the sound pressure level difference between the two rooms increased by 10.3 dBA compared to the case where 10 was not provided.

(Test 10)
In the work booth installation structure shown in FIG. 11, the sound source for measurement is installed in the 14th work booth B, which is one of the 12th and 14th work booths B and B facing each other across the common space S, to form a sound source room. On the other hand, the other is used as a receiving room, and a test sound (about 90 dBA) with a center frequency of 125, 250, 500, 1000, 2000, and 4000 Hz is generated from the sound source for measurement, and a sound level meter is used in the 14th work booth B (sound source room). The sound pressure was measured in the 12th work booth B (receiving room), and the sound pressure level difference between the two rooms (the arithmetic mean value of the sound pressure level difference between the sound source room and the receiving room in each band) was obtained. Also, from the reverberation time (the time from when the sound stops until the sound pressure attenuates by 60 dB) and the volume and total surface area of each work booth, the average sound absorption coefficient of each work booth B (average in each band of 500 Hz and 1000 Hz Arithmetic mean value of sound absorption coefficient) was obtained.

In addition, in Test 10, when the sound absorbing part 10 is not provided on the inner surfaces of the 12th and 14th work booths B, B (Test 10-1), the inner surfaces of both the 12th and 14th work booths B, B When a sound absorbing part 10 ( ¹² 450 mm square sound absorbing panels 11, 11, . When a sound absorbing part 10 (24 450 mm square sound absorbing panels 11, 11, ...) with a total area of 4.8 m ² is provided (Test 10-3), the 12th and 14th work booths B, B There were four cases (Test 10-4) in which sound absorbing portions 10 (24 450 mm square sound absorbing panels 11, 11, . . . ) with a total area of 4.8 m ² were provided on both inner surfaces.

As a result of Test 10-1, the average sound absorption coefficient of the 12th work booth B (receiving room) was 0.18, and the sound pressure level difference between the two rooms was 17.1 dBA. As a result of Test 10-2, the average sound absorption coefficient of the 12th work booth B (receiving room) was 0.23, and the sound pressure level difference between the two rooms was 21 dBA. As a result of Test 10-3, the average sound absorption coefficient of the 13th work booth B (receiving room) was 0.3, and the sound pressure level difference between the two rooms was 23.7 dBA. As a result of Test 10-4, the average sound absorption coefficient of the 13th work booth B (receiving room) was 0.3, and the sound pressure level difference between the two rooms was 25.7 dBA.

In the work booth installation structure shown ⁱⁿ FIG. The average sound absorption coefficient increased by 0.05 and the sound pressure level difference between the two rooms increased by 3.9 dBA compared to the case where the sound absorbing part 10 was not provided on the inner surfaces of the work booths B, B. On the other hand, if the sound absorbing part 10 with a total area of 4.8 m ² is provided on both the inner surfaces of the 12th and 14th work booths B, B, the sound absorbing part 10 is not provided on the inner surface of both work booths B, B. In comparison, the average sound absorption coefficient increased by 0.12, and the sound pressure level difference between the two rooms increased by 8.6 dBA. In addition, when the sound absorbing part 10 with a total area of 4.8 m ² is provided only on the inner surface of the 12th work booth B (receiving room), compared to the case where the sound absorbing part 10 is not provided on the inner surfaces of both work booths B, B As a result, the average sound absorption coefficient increased by 0.12 and the sound pressure level difference between the two rooms increased by 6.6 dBA.

[Verification of test results]
From the results of Tests 9 and 10, the inner surfaces of the two work booths B and B facing each other across the shared space S were provided with an amount of sound absorption that increased the average sound absorption coefficient by 0.1 or more within a range not exceeding 0.3. It can be seen that the provision of the part 10 can raise the sound pressure level difference between the two rooms by about 5 dBA (corresponding to raising the sound insulation performance class D between the two rooms by one rank).

On the other hand, from the results of Tests 10-2 and 10-3, the sound absorbing portion 10 of an insufficient amount (total area 2.4 m ² ) on both inner surfaces of the two work booths B and B facing each other across the common space S A sufficient amount (total area of 4.8 m ² ) of the sound absorbing part 10 is provided on the inner surface of the work booth B on the sound receiving side alone rather than providing a large improvement in the sound pressure level difference between the two rooms. It turns out. In other words, when allocating a plurality of sound absorbing panels 11, 11, ... to two work booths B, B facing each other across the common space S, the work booth B on the transmitting side and the work booth B on the sound receiving side are evenly distributed. It can be seen that the amount of improvement in the difference in sound pressure level between the two rooms is greater when more are provided in the work booth B on the sound receiving side than when allotted.

In other words, considering the results of Tests 9 and 10, the average sound absorption coefficient on both inner surfaces of the two work booths B and B facing each other across the shared space S increased by 0.1 or more within a range not exceeding 0.3. It can be seen that the sound pressure level difference between the two rooms can be increased by about 5 dBA (equivalent to raising the sound insulation performance class D between the two rooms by one rank) by providing the corresponding sound absorbing portion 10 .

Further, in view of the results of Test 9, sound absorbing sections 10 are provided on both inner surfaces of two work booths B, B facing each other with common space S therebetween, such that at least a portion thereof is disposed above the opposing side wall 3. In this case, even if the amount of the sound absorbing part 10 provided in each work booth B increases the average sound absorption coefficient of each work booth B by 0.05 or more and less than 0.1, the sound pressure level difference between the two rooms is 5 dBA. (equivalent to raising the D grade of sound insulation performance between two rooms by one rank or more). That is, after providing the sound absorbing part 10 so that at least a part of the inner surfaces of the two work booths B facing each other across the common space S is arranged on the upper part of the opposing side wall 3, each work booth B If the amount of the sound absorbing part 10 provided in the work booth B is increased by 0.05 or more within the range where the average sound absorption coefficient of each work booth B does not exceed 0.3, the sound pressure level difference between the two rooms should be increased by about 5 dBA ( It can be seen that it is equivalent to raising the sound insulation performance class D between two rooms by one rank.

In addition, from the results of Tests 9 and 10, in order to raise the D grade of the sound insulation performance between the two rooms by one rank, the amount of the sound absorbing part 10 installed in the work booth B (the average sound absorption coefficient of the work booth B is 0.3 It is important that the amount of increase of 0.1 or more within the range not exceeding 3) can reduce the amount of the sound absorbing part 10 required to raise the sound insulation performance class D between the two rooms by one rank.

By the way, in the two work booths B facing each other across the common space S, the sound leaking from the communication port 4 of the one work booth B into the common space S does not reflect (attenuate), but the common space S is sandwiched between them. There is a risk of entering the other work booth B through the communication port 4 of the other work booth B facing each other. Therefore, in each work booth B, from the communication port 4 of the work booth B facing each other across the common space S, the light leaks into the common space S without being reflected (attenuated). The opposing side wall where the intruding sound enters without being reflected (attenuated) 3 is included in the facing area), a large sound that enters from the communication port 4 without being attenuated in the shared space S is absorbed by the sound absorbing part 10 in the facing area. After that, it is suppressed from being transmitted to other work booths. In other words, in the two work booths B facing each other across the common space S, at least a part of the sound absorbing part 10 is used to reduce (absorb) the noise that enters each work booth B without being attenuated in the common space S. ), the amount of the sound absorbing part 10 can at least effectively absorb the noise (sound entering from the common space S) that enters through the communication port 4, so that the sound insulation between the two rooms It is considered that the performance grade D was raised by one rank or more.

-Effect of Embodiment 1-
In the work booth installation structure of Embodiment 1, ^two work booths B, B ( ^first and fourth Work booths B, B, or second and fifth work booths B, B) are installed so as to face each other with a common space S interposed therebetween. Each work booth B is part of the room R by being surrounded by a plurality of partition wall materials 1, 2, . . . or by the plurality of partition wall materials 1, 2, . It is partitioned into One of the plurality of partition wall materials 1, 2, . , the high ceiling wall material 2 extending from the floor F to the ceiling C of the room R except for the communication wall material 1 . Two work booths B, B facing each other with a common space S therebetween are installed so that one communication wall material 1 provided with a communication port 4 faces the common space S. - 特許庁Therefore, the interior of each work booth B communicates with the shared space S through the communication port 4 of the communication wall material 1, and is provided in one of the work booth B and the shared space S (the shared space S in the first embodiment). In addition, when the existing ceiling equipment A operates, the operation extends to the other side (within the work booth B in the first embodiment) through the communication port 4 . Further, even when the existing ceiling equipment A is installed only in one work booth B, the operation of the ceiling equipment A installed in one work booth B can be transferred to other work booths via the shared space S. It will also extend into B. For example, if the ceiling equipment A is an existing sprinkler installed in the common space S, the water sprayed from the sprinkler will fall into each work booth B through the communication port, and the sprinkler will hinder the operation of each work booth B. will no longer be In addition, for example, if the ceiling equipment A is an existing ventilation system provided in one work booth B, the contaminated air not only in the one work booth but also in the common space S and other work booths B is also ventilated by the ventilation device through the communication port. Furthermore, for example, if the ceiling equipment A is an existing air conditioner installed in one work booth B, not only the air in one work booth B but also the air in the common space S and other work booths B Temperature and humidity are adjusted by an air conditioner through the communication port.

In addition, since the communication wall material 1 faces the common space S, the sound leaked from one work booth B into the common space S faces the common space S through the communication port 4 of the communication wall material 1. A problem of noise intruding into other work booths B occurs. In the two work booths B, B facing each other across the common space S, the sound leaking from the communication port 4 of one work booth B into the common space S is reflected on the wall of the common space S or not reflected. Although there is a possibility of entering the other work booth B from the communication port 4 of the other work booth B, in particular, the sound leaked from one work booth B into the common space S is reflected on the walls of the common space S. A problem arises when it enters another work booth B from the communication port 4 without (attenuating).

However, in the work booth installation structure of the first embodiment, the sound absorbing portions 10 are provided on the inner surfaces of the two work booths B facing each other with the common space S interposed therebetween. Therefore, the sound generated in one work booth B is absorbed by the sound absorbing part 10 provided in the one work booth B, and the volume of the sound leaking into the common space S is reduced. In addition, even if the sound leaking from one work booth B into the common space S enters another work booth B facing each other across the common space S, the sound absorbing part 10 provided in the other work booth B is absorbed by the

Further, in the work booth installation structure of the first embodiment, in each work booth B, at least part of the sound absorbing part 10 is provided at least in the upper part of the opposing side wall 3 facing the communication wall material 1 . Like the first and fourth work booths B and B and the second and fifth work booths B and B of the first embodiment, a communication port 4 between two work booths B and B that face each other across a shared space S. are opposed to each other without shifting to the left and right, the upper part of the opposing side wall 3 leaks into the common space S from the communication port 4 of the work booth B facing each other across the common space S and enters from the communication port 4 without reflection. It becomes a facing area into which the sound that is emitted is incident without being reflected. Therefore, in each work booth B, by providing at least part of the sound absorbing part 10 at least in the upper part of the opposing side wall 3, the sound leaked from one work booth B into the common space S is reflected on the wall in the common space S. Even if the noise enters into another work booth B facing each other across the shared space S from the communication port 4 without doing so, the sound is absorbed by the sound absorbing part 10 provided on the upper side of the opposite side wall 3 of the other work booth B. become even smaller.

That is, in the work booth installation structure of the first embodiment, in each work booth B, at least a part of the sound absorbing part 10 is suitable for reducing the noise that enters the work booth B without being attenuated in the common space S. It is supposed to be provided at a position (upper portion of the opposing side wall 3). Therefore, the noise that enters through the communication port 4 without being attenuated in the common space S is absorbed by the sound absorbing part 10 located at an appropriate position, so that the sound transmitted to the worker working in the standing or sitting position is clear. It is expected that the content will become difficult to hear even though the voice itself can be heard. Therefore, even if there is a communication port 4 that communicates with the common space S, the inside of the work booth B can be quietly maintained in a comfortable sound environment where workers can concentrate on their work.

Furthermore, according to Embodiment 1, the communication port 4 is formed in the single communication wall material 1 of each work booth B, and at least a part of the inner surface of each work booth B is an upper portion (opposing region) of the opposing side wall 3 . Since the above sound environment can be formed only by providing the sound absorbing part 10 so that it is arranged in the space S, the ceiling part C of the common space S and the work booth B is the original before the work booth B is installed. The ceiling part C of the room R can be maintained as it is, and complicated design and large-scale construction work for changing the structure of the ceiling part C in consideration of fire extinguishing equipment and ventilation equipment are completely unnecessary. As a result, the work booth B can be easily installed at a low cost, and the installation efficiency is increased accordingly.

In addition, in the work booth installation structure of the first embodiment, in the opposing side wall 3, the sound absorbing portion 10 extends downward from the height position facing the communication port 4 to a height position H1 that is two-thirds of the ceiling height H. It is provided over a low position. In this way, the sound absorbing portion 10 is widely provided on the inner surface of the work booth B on the opposite side wall 3 so as to extend from the upper portion to the middle portion, which is obtained by dividing the inner surface into three equal parts in the height direction. Compared to the case of providing only the upper part facing the communication port 4 on the inner surface of the work booth B, the sound entering the work booth B from the common space S through the communication port 4 is more absorbed by the sound absorbing part 10 and becomes smaller. Therefore, it is possible to lower the clarity of the voice that has entered the work booth B (make it difficult to hear the content of the voice), thereby making the inside of the work booth B quieter and more comfortable sound environment where one can concentrate on work. can be kept in In addition, since the sound absorbing part 10 is provided not only in the upper part but also in a wide lower area, the sound absorbing part 10 can absorb even sounds near the ears of the worker in a sitting position. Therefore, according to the work booth installation structure of the first embodiment, the noise countermeasure effect is further enhanced for workers who work in a concentrated manner in a sitting position.

By the way, as a result of intensive research by the inventors of the present application, it has been found that at least a part of the inner surfaces of both of the two work booths B facing each other across the common space S is arranged in the upper part of the opposing side wall 3 (facing region). After providing the sound absorbing portion 10 in each work booth B, the amount of the sound absorbing portion 10 provided in each work booth B is increased by 0.05 or more within a range where the average sound absorption coefficient of each work booth B does not exceed 0.3. It was found that the sound pressure level difference between the two rooms can be increased by about 5 dBA (equivalent to raising the sound insulation performance class D between the two rooms by one rank).

Therefore, in the work booth installation structure of the first embodiment, two work booths B facing each other across the common space S are provided with a sound absorption coefficient of 0 within a range not exceeding 0.3. At least a portion of the sound absorbing portion 10 having a total area larger than the area required to increase the sound absorption by 0.05 or more is arranged on the upper portion of the opposing side wall 3 . By providing such amount of sound absorbing parts 10 at the above positions, the average sound absorption coefficient of each work booth B is increased by 0.05 or more, and the sound insulation between the two work booths B facing each other with the common space S therebetween is improved. You can raise the performance grade D by one rank. Therefore, the sound generated in one work booth B is sufficiently absorbed by the appropriate amount (total area) of the sound absorbing section 10 provided in the one work booth B. The volume of sound leaking into the common space S through the communication port 4 is reduced. In addition, the sound leaking from one work booth B into the common space S enters the other work booth B facing each other across the common space S through the communication port 4 without being reflected on the wall in the common space S. The generated noise is sufficiently absorbed by the appropriate amount (total area) of the sound absorbing portion 10 . As a result, it is expected that the clarity of the voice transmitted to the worker working in the standing or sitting position in the other work booth B will be lowered, and although the voice itself can be heard, it will be difficult to hear the content. Therefore, even if there is a communication port 4 communicating with the common space S and there is a work booth B facing each other across the common space S, the inside of the work booth B is quiet and a comfortable sound environment is maintained so that the user can concentrate on the work. be able to.

Further, in the work booth installation structure of Embodiment 1, the sound absorbing portion 10 is provided at a height of 700 mm or more. Normally, the height of the top surface of a desk is about 700 mm, and it is assumed that the ears of a worker working in a standing or sitting position are at a height of 700 mm or more. Therefore, by providing the sound absorbing portion 10 at a height of 700 mm or more, it is possible to efficiently absorb sound near the height of the ears of the operator. Therefore, the clarity of the voice that enters the inside of the work booth B can be lowered (the contents of the voice can be made difficult to hear), so that the inside of the work booth B can be maintained in a more comfortable sound environment.

Moreover, in the work booth installation structure of Embodiment 1, at least part of the sound absorbing part 10 is provided at a height of 900 mm or more and 1500 mm or less. It is assumed that the ears of a worker working in a sitting position are at a height of 900 mm or more and 1500 mm or less. Therefore, by providing at least part of the sound absorbing part 10 at a height of 900 mm or more and 1500 mm or less, it is possible to efficiently absorb the sound around the ear height of the worker working in a sitting position. Therefore, the clarity of the voice that enters the inside of the work booth B can be lowered (the contents of the voice can be made difficult to hear), so that the inside of the work booth B can be maintained in a more comfortable sound environment.

Further, in the work booth installation structure of Embodiment 1, since the sound absorbing portion 10 is composed of a plurality of detachable sound absorbing panels 11, 11, . By doing so, the position, area, etc. of the sound absorbing portion 10 can be easily adjusted.

Further, in the work booth installation structure of Embodiment 1, in the one-sided facing booth B, the entrance/exit 15 is provided in the wall material 1 for communication. By using the partition wall material 1 provided with the communication port 4 and the doorway 15 in this manner, the work booth B (one-sided facing booth B) facing the shared space S can be partitioned by only one partition wall material 1.例文帳に追加installation efficiency is increased accordingly.

Further, in the work booth installation structure of Embodiment 1, in the two-sided facing booth B, the entrance/exit 15 is provided in the partition wall material 2 adjacent to the communication wall material 1 . By providing the communication port 4 and the doorway 15 in separate partition wall materials 1 and 2 in this manner, the communication port 4 and the doorway 15 can be positioned inside the two partition wall members 1 and 2 facing the common space S. Therefore, it can be provided at a preferable position that exerts a better influence on the sound environment in the work booth B.

Further, in the work booth installation structure of Embodiment 1, an opening transom 5 having an opening 5b in a frame 5a is provided at the upper end portion of the communication wall material 1. As shown in FIG. With such a configuration, the height of the communication wall material 1 can be matched with the other partition wall material 2 having the ceiling height H, and the work booth B in which the heights of the partition wall materials 1 and 2 are uniform can be obtained.

Further, in the work booth installation structure of Embodiment 1, in each work booth B, the sound absorbing part 10 is arranged so that the total area is equal to or larger than the required area calculated in advance, which varies depending on the volume of the work booth B and the installation position of the sound absorbing part 10. is provided. Therefore, it is possible to reliably maintain a comfortable sound environment in the work booth.

<<Embodiment 2>>
12 and 13 show Embodiment 2 of the present invention. 1 to 3 are denoted by the same reference numerals, and detailed description thereof will be omitted.

This embodiment is a modification of the work booth installation structure of the first embodiment. A section 12 is provided. Similar to the sound absorbing portion 10 of the opposing side wall 3, the sound absorbing portion 12 has a structure in which a plurality of sound absorbing panels 11, 11, . The number of sound absorbing panels 11 is smaller than that of the sound absorbing part 10, and the area is relatively small. 12, four 300-mm-square sound-absorbing panels 11, 11, . They are arranged in a row in the vertical direction and fixed. In the two-sided facing booth B shown in FIG. 13, three 450 mm square sound absorbing panels 11, 11, . . . is fixed. Other configurations are the same as those of the first embodiment.

Therefore, this embodiment also provides the same effects as those of the first embodiment. In particular, in the case of this embodiment, not only the sound absorbing portion 10 on the inner surface of the opposing side wall 3, but also the sound absorbing portion 12 is additionally provided on the inner surface of the communication wall material 1 below the opening 5b (communication port 4) of the opening transom 5. Since the sound absorbing portion 12 is located opposite the opposing side wall 3, if the sound entering the work booth B through the opening 5b (communication port 4) of the opening transom 5 is Even if part of the sound is reflected without being absorbed, the reflected incoming sound is absorbed by the sound absorbing portion 12 below the opening transom 5 facing the opposing side wall 3 . As a result, the sound that enters the work booth B is further reduced as a whole, and the clarity of the voice that enters the booth B can be lowered (the content of the voice is difficult to hear). There is an advantage that the interior of B can be maintained in a quieter and more comfortable sound environment in which it is possible to concentrate on work.

－Comparison test－
In order to verify the effect of improving the sound environment by providing the sound absorbing parts 10 and 12 on the inner surface of the opposing side wall 3 and the communication wall material 1 in the work booth B, the two-sided facing booth B shown in FIG. Tests 11 to 15 were carried out by manufacturing four types of work booths B11 to B14 with different arrangements of 10 and 12.

[Work booths B11 to B14]
The work booth B11, as shown in FIG. 14, has a sound absorbing portion 10 provided on the inner surface of the work booth B of the opposing side wall 3, which is smaller than that shown in FIG. Specifically, in the work booth B11, the sound absorbing section 10 is composed of six sound absorbing panels 11, 11, . In the work booth B1, the upper end of the sound absorbing part 10 is positioned at the same height as that shown in FIG. provided to be located.

The work booth B12, as shown in FIG. 15, has a sound absorbing portion 10 provided on the inner surface of the work booth B of the opposing side wall 3, which is smaller than that shown in FIG. Specifically, in FIG. 15, the sound absorbing section 10 is composed of nine sound absorbing panels 11, 11, . In the work booth B12, the upper end of the sound absorbing part 10 is positioned at the same height as that shown in FIG. It is provided so as to be located at a position higher than the lower end of the sound absorbing portion 10 shown in FIG.

As shown in FIG. 16, the work booth B13 has a sound absorbing portion 12 provided on the inner surface of the communication wall member 1 of the work booth B, which is larger than that shown in FIG. Specifically, in FIG. 16, the sound absorbing portion 12 is composed of six sound absorbing panels 11, 11, . . . of 450 mm square. The six sound absorbing panels 11, 11, .

As shown in FIG. 17, the work booth B14 has a sound absorbing portion 12 provided on the inner surface of the work booth B of the communication wall member 1, which is larger than that shown in FIG. Specifically, in FIG. 17, the sound absorbing portion 12 is composed of nine sound absorbing panels 11, 11, . . . each having a size of 450 mm square. The nine sound absorbing panels 11, 11, .

[Tests 11-15]
The following tests 11-15 were performed.

(Test 11)
As in Test 1 of Embodiment 1, a sound source for measurement (about 90 dBA) was placed in one of the second work booth B (FIG. 12) and the third work booth B (FIG. 13) of the work booth installation structure of Embodiment 2. is set up as a sound source room, and the other is set as a receiving room, and a test sound (about 90 dBA) with a center frequency of 125, 250, 500, 1000, 2000, 4000 Hz is generated from the sound source for measurement, and a sound source room is used with a sound level meter. The sound pressure was measured in the receiving room, and the sound pressure level difference between the two rooms (the arithmetic mean value of the sound pressure level difference between the sound source room and the receiving room in each band) was obtained.

As a result of Test 11, when sound was transmitted from either the second or third work booth B, the amount of improvement in the difference in sound pressure level ) was 3dBA or more and less than 5dBA, and it was so large that even if the caller was having a conversation, the receiver could not tell what was being said.

(Test 12)
In the work booth installation structure of Embodiment 2, the third work booth B was changed to work booth B11 (FIG. 14), and a test similar to Test 11 was conducted between the second and third work booths B and B11.

As a result of Test 12, when the sound was transmitted from the third work booth B11, the improvement amount of the sound pressure level difference was 3 dBA or more and less than 5 dBA, but when the sound was transmitted from the second work booth B, The amount of improvement in the difference in sound pressure level was less than 1 dBA, which was large enough to distinguish the conversation of the originating side when the receiving side listened carefully.

(Test 13)
In the work booth installation structure of Embodiment 2, the third work booth B was changed to work booth B12 (FIG. 15), and a test similar to Test 11 was conducted between the second and third work booths B and B12.

As a result of Test 13, when the sound was transmitted from the third work booth B12, the improvement amount of the sound pressure level difference was 3 dBA or more and less than 5 dBA, but when the sound was transmitted from the second work booth B, The amount of improvement in sound pressure level difference was 1 dB or more and less than 3 dBA.

(Test 14)
In the work booth installation structure of Embodiment 2, the third work booth B was changed to work booth B13 (FIG. 16), and a test similar to Test 11 was conducted between the second and third work booths B and B13.

As a result of Test 14, the amount of improvement in sound pressure level difference was 3 dBA or more and less than 5 dBA when sound was emitted from any of the second and third work booths B and B13.

(Test 15)
In the work booth installation structure of Embodiment 2, the third work booth B was changed to work booth B14 (FIG. 17), and a test similar to Test 11 was conducted between the second and third work booths B and B14.

As a result of Test 15, the amount of improvement in sound pressure level difference was 3 dBA or more and less than 5 dBA when sound was emitted from any of the second and third work booths B and B13.

[Verification of test results]
From the results of Tests 11 to 15, the height position facing the communication port 4 on the inner surface of the work booth B of the opposing side wall 3 is lowered to a position lower than the height position H1, which is two-thirds of the ceiling height H of the room R. A work booth B (FIGS. 12, 13, 15 to 17) in which a sound absorbing part 10 is provided over the entire area and a sound absorbing part 12 is also provided on the inner surface of the work booth B on the lower side of the opening transom 5 of the communication wall material 1. , even if the sender is having a conversation, the receiver can only hear the sound of a level that makes it impossible to tell what is being said. In the work booth B11 (Fig. 14), which is higher than the height position H1, which is two-thirds of the height H, the sound absorption effect of the sound absorbing parts 10 and 12 is insufficient, and when listening carefully, other work booths It was found that the sound at a level large enough to distinguish the conversation at B was transmitted. In other words, in order to form a work booth B with a comfortable sound environment, even if the sound absorbing part 12 is provided on the inner surface of the work booth B below the opening transom 5 of the communication wall material 1, the sound absorbing part 10 is On the inner surface of the work booth B, it is verified that it is necessary to extend from the height position facing the communication port 4 downward to the position lower than the height position H1, which is two-thirds of the ceiling height H of the room R. rice field.

In addition, during tests 11 to 15, it was verified whether the room sound environment in each work booth B was good (whether a person in the work booth B could clearly hear the voice uttered in the work booth B). In the work booth B (FIGS. 12 to 17) provided with 10 and 12, the person in the work booth B could clearly hear the voices uttered in the work booth B. On the other hand, in the work booth B14 (FIG. 17), which has a large number of sound absorbing panels 11, 21, a voice uttered in the work booth B is too much absorbed by the sound absorbing panels 11, making it difficult to speak No voice came out), and the indoor sound environment was not good.

As described above, in the second embodiment, it is possible to obtain the same effects as in the first embodiment. Further, in Embodiment 2, the sound absorbing portion 12 is also provided on the inner surface of the communication wall member 1 below the communication port 4 , and the sound absorbing portion 12 is located opposite the opposing side wall 3 . Even if all the sound entering the work booth B from the opposite side wall 3 is not absorbed by the sound absorbing part 10 at the upper part of the opposite side wall 3 and part of it is reflected, the reflected sound enters the communication port 4 facing the opposite side wall 3 It is absorbed by the sound absorbing portion 12 on the lower side. As a result, the sound entering the inside of the work booth B is further reduced, and the inside of the work booth B can be maintained in a quieter and comfortable sound environment in which workers can concentrate on the work.

<<Embodiment 3>>
FIG. 18 shows Embodiment 3 of the present invention. 1 and 2 are assigned the same reference numerals, and detailed description thereof will be omitted. In Embodiment 3, in the work booth installation structure of Embodiment 1, part of the sound absorbing section 10 provided in each work booth B is configured by a sound absorbing panel 17 suspended from the ceiling section C. The sound absorbing panel 17 is hung so as to be arranged at a height corresponding to the communication port 4 .

According to the third embodiment, in each work booth B, at least a part of the sound absorbing part 10 is provided in the upper part of the work booth B by the sound absorbing panel 17 suspended from the ceiling part C, so that it communicates with the common space S The sound entering into the work booth B through the mouth 4 can be absorbed by the sound absorbing part 10 immediately after entering. Therefore, the sound that enters the work booth B from the common space S through the communication port 4 can be efficiently absorbed by the sound absorbing portion 10 .

<<Embodiment 4>>
19 and 20 show Embodiment 4 of the present invention. 1 to 3 are denoted by the same reference numerals, and detailed description thereof will be omitted. In Embodiment 4, in the work booth installation structure of Embodiment 1, the opening transom 5 located at the upper end portion of the communication wall member 1 is eliminated.

In this embodiment, the opening transom 5 is not provided at the upper end of the communication wall material 1, and the communication wall material 1 is a so-called low partition in which the height position of the upper end is lower than the ceiling height by about 500 to 700 mm. It is configured. As a result, a space (interval) is formed between the upper end of the communication wall member 1 and the ceiling portion C of the chamber R, and this space provides communication above the communication wall member 1 with a height h (500 to 700 mm). A mouth 4 is constructed. Other configurations are the same as those of the first embodiment.

As described above, even in the fourth embodiment, the same effect as in the first embodiment can be obtained. Further, in the fourth embodiment, the communication port 4 for the work booth B can be formed simply by making the communication wall member 1 a low partition lower than the high-ceiling wall member 2, and the communication port 4 can be easily formed. become.

In the fourth embodiment, as in the second embodiment, an opening lower sound absorbing portion 12 may be provided on the inner surface of the communication wall member 1 below the communication port 4 .

<<Embodiment 5>>
FIG. 21 shows Embodiment 5 of the present invention. 1 to 3 are denoted by the same reference numerals, and detailed description thereof will be omitted. Embodiment 5 is the work booth installation structure of Embodiment 1, in which a plurality of (six in FIG. 21) work booths B, B, . . . S, hereinafter referred to as "common space within the area") is surrounded by partition wall materials 2, 6 to be isolated from other parts of the room R (common area X0). The work areas X1 and X2 are divided and formed. In the common area X0, a plurality of table sets, sofas, and the like are arranged so that, for example, several to several tens of people can work. In other words, in the fifth embodiment, the room R consists of work areas X1 and X2 where work booths B, B, . . . area X0.

In this embodiment, six work booths B, B, . A side wall facing the common space within the area is constructed of a communication wall member 1 having a communication port 4 at the upper end so as to act in the work booth B through the port 4 . Correspondingly, each of the six work booths B, B, . A section 10 is provided.

In addition, each work area X1, X2 is a closed space isolated from the common area X0 in the room R by providing partition walls 6 at both ends of the common space within the area. Like the partition wall material 2, the partition wall material 6 is composed of a high-ceiling wall material having a height from the floor portion F of the room R to the ceiling portion C thereof. In addition, it is preferable that the partition wall material 6 has a sound insulation function. As shown in FIG. 21, the partition wall material 6 is formed with an entrance and a door. Other configurations are the same as those of the first embodiment.

As described above, even in the fifth embodiment, the same effects as in the first embodiment can be obtained. In addition, in the fifth embodiment, by partitioning the work areas X1 and X2 in the room R so as to be isolated from the common area X0, the sound entering each work booth B through the communication port 4 is suppressed by the work. Since the noise is limited to the work areas X1 and X2 in which the booths B are provided, the noise entering the work booths B can be minimized. Specifically, since the communication port 4 of each work booth B is open toward the common space within the area, noise generated in the common space within the area and other work booths B , is absorbed by the sound absorbing unit 10 in the work booth B, becomes smaller, and leaks into the common space in the area through the communication port 4. Only the noise enters the outside of the work areas X1 and X2 (common area Since the noise generated in X0 and other work areas X2, X1) does not enter, the noise entering each work booth B can be minimized.

From the viewpoint of suppressing the intrusion of noise, it is preferable that the partition wall material 6 that separates the shared space within the area from the shared area X0 does not have the communication port 4. 4 can also be provided.

Also, the configuration within the work areas X1 and X2 is not limited to that of the present embodiment. In the work areas X1 and X2, a common space within the area and a plurality of work booths B, B, . Any configuration may be used as long as the ceiling device A is shared with the shared space. Furthermore, the number of work areas X1 and X2 partitioned in the room R is not limited to two in the fifth embodiment, and may be one or three or more.

In the fifth embodiment, as in the second embodiment, the opening lower sound absorbing portion 12 may be provided on the inner surface of the communication wall material 1 below the communication port 4, and in the same manner as in the fourth embodiment. The opening transom 5 located at the upper end of the wall material 1 may be eliminated.

<<Embodiment 6>>
FIG. 22 shows Embodiment 6 of the present invention. 1 and 2 are assigned the same reference numerals, and detailed description thereof will be omitted. The work booth installation structure of the sixth embodiment is a modification of the work booth installation structure of the first embodiment.

Specifically, in the work booth installation structure of Embodiment 6, the first to sixth work booths B, B, . . . The first to sixth work booths B, B, .

In addition, as shown in FIG. 22, in the work booth installation structure of the sixth embodiment, the shared space facing the communication wall materials 1, 1 of the first to sixth work booths B, B, . . . A sound absorbing portion 20 is provided on the opposing wall. In FIG. 22, the shared facing walls of the first to third work booths B, B, B are the communication wall members 1, 1, 1 of the fourth to sixth work booths B, B, B. , 4th to 6th work booths B, B, B, common opposing walls are wall members 1, 1, 1 for communication of the 1st to 3rd work booths B, B, B. The sound absorbing part 20 is provided at a position facing the communication port 4 of each work booth B. As shown in FIG. The sound absorbing portion 20 is composed of a plurality of sound absorbing panels 11, like the sound absorbing portion 10. As shown in FIG. The sound absorbing portion 20 may be composed of a sound absorbing body integrally embedded in the partition wall material 1 .

As described above, in the work booth installation structure of Embodiment 6, not only the inner surfaces of the work booths B, B, but also the common facing wall members 1, 1 facing the communication wall materials 1, 1 of the work booths B with the common space S interposed therebetween. A sound absorbing portion 20 is also provided at a position facing each communication port 4 of the wall. With such a configuration, the sound leaking from the communication port 4 of each work booth B into the shared space S is absorbed by the sound absorbing portion 20 provided at a position opposite to the communication port 4 of the common facing wall. As a result, the sound leaking from one work booth B into the shared space S can be prevented from entering the other work booths B. Therefore, the inside of the work booth B can be maintained in a quieter and comfortable sound environment in which the worker can concentrate on the work.

<<Other embodiments>>
The present invention is not limited to the above embodiments, and includes various modified embodiments. For example, in the above embodiment, the partition wall materials 1 and 2 are made of a noncombustible material such as steel. Since 2 is considered furniture, it can be constructed of materials other than non-combustible materials.

Further, in each of the above-described embodiments, the existing ceiling equipment A provided in the ceiling part C of the shared space S can be shared between the shared space S and the work booth B (the operation of the ceiling equipment A in the shared space S is communicated). Although an example in which the work booth B is arranged so as to extend into the work booth B through the opening 4 has been described, the work booth installation structure according to the present invention is not limited to this. Conversely, the existing ceiling equipment A installed in the ceiling section C in each work booth B can be shared between the common space S and the work booth B (the operation of the ceiling equipment A in each work booth B is 4 to the common space S).

In each of the above embodiments, the sound absorbing parts 10, 12 are composed of a plurality of sound absorbing panels 11, 11, . It may be composed of an integrally embedded sound absorber.

Further, in each of the above embodiments, the sound absorbing portions 10 and 12 are provided on the inner surfaces of the partition wall materials 1 and 2, but the sound absorbing portions 10 and 12 may be provided on the door 16 provided at the entrance/exit 15. FIG. In that case, the sound absorbing panel 11 may be provided on the inner surface of the door 16 , or the sound absorbing body may be integrally embedded in the inner surface of the door 16 .

Further, in each of the above-described embodiments, in the two work booths B, B facing each other across the common space S, the upper part of the opposing side wall 3 is located in the opposing region of the inner surface of the work booth B (other than that facing each other across the common space S). The sound that leaks from the communication port 4 of the work booth B into the common space S and enters from the communication port 4 without reflection is included in the area where the sound enters without reflection. It was installed on the inner surface of the work booth B so as to be arranged on the upper part of the side wall 3. However, the installation location of the sound absorbing portion 10 is not limited to that in each of the above embodiments. When the facing area on the inner surface of the work booth B is located on an inner surface other than the inner surface of the facing side wall 3 (for example, the partition wall member 2 adjacent to the facing side wall 3), at least a portion thereof may be provided. Further, when there are two or more work booths B facing each other across the common space S, a part of the sound absorbing part 10 may be provided in each area facing each of the work booths B facing each other across the common space S. preferable.

Further, in each of the above-described embodiments, the opposing side wall 3 is made of the partition wall material (ceiling high wall material) 2, but the opposing side wall 3 may be made of a part of the wall portion W of the room R. When the side wall facing the wall member 1 for communication is part of the wall W of the chamber R, part of the wall W of the chamber R becomes the opposing side wall 3 and part of the wall W of the chamber R. The sound absorbing part 10 may be provided at least on the inner surface of the work booth B.

Furthermore, in each work booth B, for example, in the partition wall material under the desk 21, an acoustic device that emits background noise or masking sound can be installed in the work booth B. The sound environment becomes more favorable. Further, in each of the above embodiments, the inner surfaces of the two work booths B facing each other across the shared space S have an area equal to or larger than the area required to increase the average sound absorption coefficient by 0.05 or more within a range not exceeding 0.3. By providing a sound absorbing portion with a total area of Therefore, noise entering the work booth B through the communication port 4 can be made inaudible only by generating background noise or masking sound of relatively low volume. Therefore, the generated background noise or masking sound does not become noise due to excessive volume.

In addition, the work booths B installed in a part of the room R may be changed in number and layout, and a part of the room R may be divided into the work booths B and the other common space S. It should be installed.

INDUSTRIAL APPLICABILITY The present invention does not require work on the ceiling when installing a work booth with a small space in a large room, can be installed using existing ceiling equipment as it is, and has high installation efficiency, so it is extremely useful and industrial. Highly available.

1 Communication wall material (partition wall material)
2 High ceiling wall material (partition wall material)
3 Opposing side wall (partition wall material, part of room wall)
4 communication port
5 Transom opening
10 sound absorbing part
11 Sound absorbing panel
20 Sound absorbing part A Shared equipment B Work booth C Ceiling part F Floor part R Room S Shared space W Wall part

Claims (11)

In a part of a room in a building where ceiling equipment is installed in the ceiling, a plurality of partition wall materials erected on the floor of the room, or a plurality of partition wall materials and the walls of the room surround A work booth installation structure in which two work booths with a floor area of 0.36 m ² or more and 4 m ² or less surrounded by are installed so as to face each other across a common space,
Each partition wall member is placed or fixed on the floor of the room, and the side end of each partition wall member is fixed to the side end of another adjacent partition wall member or the wall of the room. is,
One of the plurality of partition wall members forming each work booth is a communication wall member provided with a communication port on the upper end or upper side thereof for communicating the inside and outside of the work booth, and the communication wall The partition wall material other than the material is a high ceiling wall material with a height from the floor to the ceiling of the room,
Each work booth is installed so that the wall material for communication faces the common space, and the operation of the ceiling equipment provided in one of the work booth and the common space extends to the other through the communication port. is,
In the two work booths, there is a possibility that the sound leaked from the communication port of one of the work booths into the common space may enter the other work booth from the communication port of the other work booth without being reflected. is placed at a position of
A sound absorbing part is provided on the inner surface of each work booth,
In each of the work booths, at least a part of the sound absorbing section is provided on the inner surface of the work booth in which the sound absorbing section is provided, and the communication port of the work booth that faces the work booth across the common space. A work booth installation structure, characterized in that the work booth installation structure is provided in a facing area where the sound that leaks into the space and enters through the communication port without being reflected is incident without being reflected. In a part of a room in a building where ceiling equipment is installed in the ceiling, a plurality of partition wall materials erected on the floor of the room, or a plurality of partition wall materials and the walls of the room surround A work booth installation structure in which two work booths with a floor area of 0.36 m ² or more and 4 m ² or less surrounded by are installed so as to face each other across a common space,
Each partition wall member is placed or fixed on the floor of the room, and the side end of each partition wall member is fixed to the side end of another adjacent partition wall member or the wall of the room. is,
One of the plurality of partition wall members forming each work booth is a communication wall member provided with a communication port on the upper end or upper side thereof for communicating the inside and outside of the work booth, and the communication wall The partition wall material other than the material is a high ceiling wall material with a height from the floor to the ceiling of the room,
Each work booth is installed so that the wall material for communication faces the common space, and the operation of the ceiling equipment provided in one of the work booth and the common space extends to the other through the communication port. is,
In the two work booths, there is a possibility that the sound leaked from the communication port of one of the work booths into the common space may enter the other work booth from the communication port of the other work booth without being reflected. is placed at a position of
A sound absorbing part is provided on the inner surface of each work booth,
In each of the work booths, at least a part of the sound absorbing part is at least an upper part of an opposing side wall composed of the partition wall material or the room wall facing the communication wall material of the work booth in which the sound absorbing part is provided. A work booth installation structure characterized by being provided in. In the work booth installation structure according to claim 1 or 2,
The sound absorbing part is provided with a total area equal to or larger than the area necessary to increase the average sound absorption coefficient of the work booth in which the sound absorbing part is provided by 0.05 or more within a range not exceeding 0.3. A work booth installation structure characterized by: In the work booth installation structure according to claim 1 or 2,
The work booth installation structure, wherein the sound absorbing part is provided at a height of 700 mm or more. In the work booth installation structure according to claim 4,
The work booth installation structure, wherein at least part of the sound absorbing part is provided at a height of 900 mm or more and 1500 mm or less. In the work booth installation structure according to claim 1 or 2,
The work booth installation structure, wherein at least part of the sound absorbing part is composed of a plurality of detachable sound absorbing panels. In the work booth installation structure according to claim 1 or 2,
The work booth installation structure, wherein at least part of the sound absorbing portion is a sound absorbing body integrally embedded in the partition wall material. In the work booth installation structure according to claim 1 or 2,
An opening transom having an opening in the frame is provided at the upper end of the communication wall material,
The work booth installation structure, wherein the communication port is configured by an opening between the open transoms. In the work booth installation structure according to claim 1 or 2,
The communication wall material is lower in height than the ceiling of the room, and the communication port is formed in the space between the upper end of the communication wall material and the ceiling of the room. Work booth installation structure. In the work booth installation structure according to claim 1 or 2,
The work booth installation structure, wherein the high-ceiling wall material is fixed to the ceiling of the room. In the work booth installation structure according to claim 1 or 2,
A sound absorbing portion is provided at a position facing each communication port of the two work booths on the two shared facing walls that face the communication wall materials of the two work booths across the shared space. A work booth installation structure characterized by:

Images