booth

Abstract

To provide a booth allowing an air cleaner and the like to be placed inside the booth without causing the inconvenience of the space for the lower limbs and the like to be narrowed.SOLUTION: A booth B forming an inner space IS separated from an outer space OS is provided with: a bottom plate 1 sealing the lower side of the inner space IS; a front wall, side walls 3 and a rear wall 4, which are peripheral walls surrounding the inner space IS; a ceiling sealing the upper part of the inner space IS; and a chair 7 which is placed in the inner space IS and has an air cleaner 9 embedded therein; as well as an exhaust outlet 7a to exhaust cleaned air discharged from the air cleaner 9 to the front side of a seated person, and an air inlet 7b for sucking the exhausted air behind the seated person to return it to the air cleaner 9.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a booth used for office work, meetings, etc. [Background technology]

[0002] BACKGROUND ART Conventionally, booths that can suppress the intrusion of external noise and human voices and increase the level of concentration in the interior space have been known.

[0003] Such booths may be equipped with air conditioning units to adjust the temperature and humidity of the interior space (see Patent Document 1). Recently, there has been a strong demand for purifying the interior space by capturing droplets of saliva that are generated during conversation, and the installation of air conditioning units with air purification functions is also being considered.

[0004] However, when such an air cleaner or the like is installed inside the booth, space for the device is required within the interior space, resulting in a reduction in the space for the lower legs, etc. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent Publication No. 2021-8783 Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention aims to make it possible to install an air purifier inside a booth without causing the inconvenience of narrowing the leg space or the like. [Means for solving the problem]

[0007] The booth of the invention described in claim 1 forms an internal space isolated from the external space, and comprises a base that closes the bottom of the internal space, a peripheral wall that surrounds the periphery of the internal space, a ceiling that closes the top of the internal space, and a chair that is placed within the internal space and has an air purifier built in. It also comprises an exhaust port for discharging clean air discharged from the air purifier in front of the seated person, and an air intake port for sucking in the discharged air behind the seated person and returning it to the air purifier.

[0008] The booth according to the invention described in claim 2 is the booth described in claim 1, wherein at least one of the exhaust port and the air intake port is provided in the chair.

[0009] The booth according to the invention described in claim 3 is the one described in claim 1 or 2, wherein the chair comprises a chair body having an apparatus housing chamber for housing the air purifier under the seat, and a backrest arranged on the chair body, and the air intake port is provided on the backrest side.

[0010] The booth according to the invention described in claim 4 is the one described in claim 2 or 3, wherein the chair comprises a chair body having an apparatus housing chamber for housing the air purifier under the seat, and a backrest arranged on the chair body, and the exhaust outlet is provided on the chair body side.

[0011] The booth according to the invention described in claim 5 is the booth described in claim 4, wherein the chair is attached to the inner surface of the peripheral wall, and the peripheral wall is used as an air flow path for guiding the air introduced from the air intake port to the air purifier.

[0012] The booth according to the invention described in claim 6 is the booth described in claim 3 or 4, wherein the seat is configured to be capable of selectively taking a closed position that blocks the equipment storage chamber and an open position that opens the equipment storage chamber upward.

[0013] The booth according to the invention described in claim 7 is the one described in claim 3, 4, 5 or 6, in which an air flow path for supplying outside air, which is introduced from the external space into the equipment storage chamber and led to the internal space from the exhaust port, and an air flow path for circulating air, which is supplied to the air purifier from the air intake port and led to the internal space from the exhaust port, are arranged side by side within the equipment storage chamber while being isolated from each other. [Effects of the Invention]

[0014] According to the present invention, an air purifier can be installed inside a booth without causing the inconvenience of narrowing the leg space or the like. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a perspective view of a booth according to an embodiment of the present invention. [Figure 2] FIG. [Figure 3] FIG. 2 is a front cross-sectional view of the booth according to the embodiment. [Figure 4] FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. [Figure 5] FIG. 2 is an exploded perspective view of the booth according to the embodiment, with the ceiling and front wall omitted. [Figure 6] FIG. 5 is an enlarged view of a main part in FIG. 4. [Figure 7] FIG. 7 is an enlarged view of the main part in FIG. 6. [Figure 8] FIG. 8 is a cross-sectional view taken along line XX in FIG. [Figure 9] FIG. 8 is a cross-sectional view taken along line YY in FIG. [Figure 10] 8 is a view taken along arrow Z in FIG. 7. [Figure 11] FIG. 2 is a perspective view showing a duct and an air purifier according to the embodiment. [Figure 12] FIG. 4 is an enlarged view of a main part in FIG. 3. [Figure 13] FIG. 10 is an explanatory diagram of a chair according to another embodiment of the present invention. [Figure 14] FIG. 10 is an explanatory diagram of a chair according to another embodiment of the present invention. [Figure 15] FIG. 10 is an explanatory diagram of a chair according to another embodiment of the present invention. [Figure 16] FIG. 10 is an explanatory diagram of a chair according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0016] An embodiment of the present invention will now be described with reference to FIGS.

[0017] In this embodiment, the present invention is applied to a booth B for four people.

[0018] As shown in Figures 1 to 4, this booth B comprises a base 1 that covers the underside of the internal space IS, peripheral walls (front wall 2, side wall 3, back wall 4) that surround the internal space IS, and a ceiling 5 that covers the top of the internal space IS, and the top of a table 6 and chairs 7 are arranged in the internal space IS.

[0019] As shown in Figures 1 to 4, the base plate 1 is provided on its underside with casters 17, adjusters 18, and fixtures 19. The casters 17 are for moving the booth B along the building floor F, the adjusters 18 are for adjusting the height of the four corners of the booth B after it has been moved, and the fixtures 19 are for fixing the booth B to the building floor using anchor bolts or the like (not shown) after the height of the four corners has been adjusted.

[0020] More specifically, as shown in FIG. 3 , the base panel 1 comprises a left base body panel 1A, a central base body panel 1B, and a right base body panel 1C connected via connecting hardware 11. Vertical reinforcements 12 extending front-to-rear and horizontal reinforcements 13 extending left-to-right are rigidly connected to the top surfaces of each of the base body panels 1A-1C. A leg support member 15 is fixedly attached to the central base body panel 1B for supporting a leg base 63 of a table 6 (described later). A floor panel 14 is laid on the top surface of the base panel 1, avoiding the leg support member 15. An internal space 1s is defined between the floor panel 14 and the base body panels 1A-1C. Reference numeral 16 denotes a ventilation fan for introducing outside air A2 into an interior space IS through the interior of a chair 7 (described later). The floor panel 14 is formed with ventilation windows 14a for guiding the outside air A2 introduced through the ventilation fan 16 onto the floor panel 14.

[0021] The front wall 2, which serves as a peripheral wall, closes the front of the interior space IS and, as shown in FIGS. 1 and 2, comprises a left front panel 2A, a central door panel 2B, and a right front panel 2C. The left and right front panels 2A and 2C are, for example, laminated glass 21A and 21C whose edges are reinforced by frames 22A and 22C. The door panel 2B is, for example, mainly composed of laminated glass 21B and a door edge member 22B disposed at its edge, and is hinged to the frame 22A of the left front panel 2A via a hinge 23 so as to be able to open and close. Reference numeral 24 in the drawings denotes a handle.

[0022] As shown in Figures 3, 5, and 12, the side wall 3 serving as a peripheral wall comprises an outer plate 31 and an interior sound-absorbing panel 35 arranged inside the upper half of the outer plate 31. Chairs 7, described below, are closely attached to the inside of the lower half of the outer plate 31. Specifically, the outer plate 31 is made of sheet metal and has an area covering the entire side of the booth B. At its upper and lower edges, an upper flange 311 attached to the ceiling 5 and a lower flange 312 attached to the base plate 1 extend toward the interior space IS. At its front and rear edges, a front flange 313 attached to the front wall 2 and a rear flange 314 attached to the back wall 4 extend toward the interior space IS. Four horizontal reinforcements 32 and two vertical reinforcements 33 are rigidly connected to the inner surface of the outer plate 31 by welding or the like. The horizontal reinforcement members 32 and the vertical reinforcement members 33 each have a thickness dimension corresponding to the thickness dimension of the side wall 3, and a plurality of horizontally extending reinforcement ribs 34 are provided in the area surrounded by the horizontal reinforcement members 32 and the vertical reinforcement members 33. The reinforcement ribs 34 have a triangular cross section, and their thickness dimension is set to a value smaller than the thickness dimensions of the horizontal reinforcement members 32 and the vertical reinforcement members 33.

[0023] 12, an upper air flow path 3F is formed between the outer plate 31 of the side wall 3 and the sound-absorbing panel 35, and a notch 35a is formed at the upper edge of the sound-absorbing panel 35 to guide the air in the internal space IS (the introduced outside air A2 and a part of the circulating air A1) through the air flow path 3F to an air flow path 5F in the ceiling 5, which will be described later. In addition, a lower air flow path 3E is formed between the outer plate 31 of the side wall 3 and a chair body 71 and a backrest 72 of a chair 7, which will be described later.

[0024] 3, 4, and 5, the rear wall 4 serving as a peripheral wall includes, for example, a left rear panel 41, a central support 42, and a right rear panel 43. The left and right rear panels 41, 43 are formed by, for example, reinforcing the edges of laminated glass 411, 431 with frames 412, 432.

[0025] As shown in FIGS. 3 and 4 , the ceiling 5 has a double-wall structure including a ceiling panel 51 that separates the interior space IS from the exterior space OS, and an interior ceiling panel 56 that is disposed below the ceiling panel 51 via an air flow path 5F. The ceiling panel 51 is made of, for example, sheet metal, and horizontal reinforcements 52 extending laterally are rigidly attached to its underside by welding or the like. The interior ceiling panel 56 is formed, for example, using a sound-absorbing panel 561. An air flow path 5F is formed between the ceiling panel 51 and the interior ceiling panel 56, allowing air A1 and A2 to flow. The ceiling panel 51 is provided with an air vent 57 that releases the air A1 and A2 in the air flow path 5F to the exterior space OS. The air flow path 5F is connected to the air flow path 3F at the top of the side wall 3 and also to the interior space IS through cutouts 35a in the sound-absorbing panels 35 that abut the undersides of both left and right ends of the interior ceiling panel 56. A downward-discharge type automatic fire extinguisher 58 is supported on the ceiling panel 51. The automatic fire extinguisher 58 automatically detects a fire within the interior space IS and sprays a fire extinguishing agent from a nozzle. A fire extinguishing agent spray nozzle 581 equipped with a heat detector of the automatic fire extinguisher 58 penetrates the interior ceiling panel 56 and faces the interior space IS. Since the automatic fire extinguisher 58 is a conventional type, a description thereof will be omitted. The interior ceiling panel 56 is also provided with downlights 59 and the like for illuminating the interior space IS. Reference numeral 580 denotes a fire extinguisher cover that covers the automatic fire extinguisher 58 from above.

[0026] In the interior space IS of the booth B described above, a table 6 is provided in association with the support pillars 42 of the back wall 4 described above, and chairs 7 according to the present invention are arranged on both sides of the table 6.

[0027] As shown in Figures 1, 3 and 4, the table 6 comprises a top plate support 64 fixed to a support 42 with one side facing the interior of the room IS, and a top plate 61 placed inside the room with its underside supported by the top plate support 64.

[0028] 3 and 4, the top plate receiver 64 is box-shaped and includes a bottom plate 641, a front plate 642 standing up from the front edge of the bottom plate 641, side plates 643 standing up from both left and right edges of the bottom plate 641, and a rear plate 644 standing up from the rear edge of the bottom plate 641, and is integrally formed from sheet metal. The top plate 61 is fixed onto the top plate receiver 64 with screws.

[0029] The tabletop support 64 has a wiring space 64s therein that communicates with the cord guide space. The interior space IS in this embodiment is for multiple people, with chairs 7 arranged on both sides of the table 6, as shown in Figures 1 and 3, and specifically, for four people, with two two-seater chairs 7 arranged facing each other across the tabletop 6. Therefore, the tabletop support 64 is provided with a wiring space 64s that is a wiring space with a capacity that can accommodate outlet elements T for the maximum number of expected users (four people). The outlet elements T and the like accommodated in the wiring space 64s can be individually inserted into and removed from the upper surface 61b of the tabletop 61 by opening and closing access windows (not shown) in the tabletop 61.

[0030] The tabletop 61 is made of wood, for example, and is placed in a chamber IS formed inside the peripheral walls, i.e., the front wall 2, side walls 3 and back wall 4, with its rear end supported by a tabletop support 64 and its front end supported by a leg base 63 via a leg support 62, as shown in Figures 3 and 4.

[0031] 3 and 4, each of the chairs 7 arranged on either side of the table 6 comprises a chair body 71 having a seat 73 and an air purifier 9. The chairs 7 each comprise an outlet 7a for circulating air A1 discharged from the air purifier 9 to the front side of a seated person P seated on the seat 73, and an air inlet 7b for returning a portion of the air A1 discharged from the outlet 7a and passing in front of the seated person P to the air purifier 9 for circulation.

[0032] That is, each chair 7 comprises a chair body 71 having an apparatus housing chamber 71s in which an air purifier 9 is housed under a seat 73, and a backrest 72 arranged on the chair body 71, with an exhaust port 7a provided in the chair body 71 and an intake port 7b provided in the backrest 72. Note that, unlike the description of booth B as a whole, the description of this chair 7 will refer to directions such as front, back, left and right based on the seated person P.

[0033] More specifically, as shown in Figures 3 to 7, the chair 7 comprises a chair body 71 having a seat 73 placed on the base 1 of the booth B, a backrest 72 provided on the chair body 71, and a plate-like body (side wall 3 constituting the peripheral wall) attached to the back of the backrest 72 and the chair body 71, and an air purifier 9 is housed within the chair body 71.

[0034] As shown in FIGS. 3 to 10, chair body 71 includes a downwardly open box body 75 that defines an apparatus storage chamber 71s therein, and a base frame 76 for positioning box body 75 on the base plate 1 of booth B. Box body 75 includes an upper plate 751 having a seat 73 formed on its upper surface, a front plate 752 that hangs down from the front edge of top plate 751, a rear plate 753 that hangs down from the rear edge of top plate 751, and side plates 754 that connect the side edges of front plate 752 and rear plate 753. Meanwhile, base frame 76 is annular and includes a front frame member 761 that supports front plate 752 of box body 75, a rear frame member 762 that supports rear plate 753 of box body 75, and side frame members 763 that support side plates 754 of box body 75, and front frame member 761 has a recessed portion 764 formed in a central region excluding both left and right ends. This recessed portion 764 is recessed rearward of the front plate 752 of the box body 75, and this recessed portion 764 forms an outlet space 76s that connects the inside and outside of the box body 75. An entrance window 75a that connects the inside and outside of the box body 75 is formed in the front plate 752 of the box body 75. The air purifier 9 is a conventional type in which air A1 introduced through the suction window 9a is purified by an electrostatic precipitator 91 and the air A1 is sequentially discharged from the outlet window 9b by a fan 92. Reference numeral 93 denotes a maintenance door for accessing the electrostatic precipitator 91, 94 denotes a power cord for supplying power to the electrostatic precipitator 91 and the fan 92, and 95 denotes a power cord for connecting to a switch (not shown) provided on the peripheral wall surface.

[0035] 7, 8, and 11, the intake window 9a of the air purifier 9 is connected to the intake window 75a of the box body 75 via an intake duct 77, and the exhaust window 9b of the air purifier 9 is connected to the aforementioned outlet space 76s, which communicates between the inside and outside of the box body 75, via an outlet duct 78. The intake duct 77 has a start opening 77a fastened to the inner surface of the rear panel 753 corresponding to the intake window 75a of the box body 75 with screws or the like, and a terminal opening 77b tightly abutting against a surface of the air purifier 9 corresponding to the intake window 9a via a gasket 771. The outlet duct 78 has a start opening 78a tightly abutting against a surface of the air purifier 9 corresponding to the exhaust window 9b via a gasket 782. The outlet duct 78 is fastened with screws or the like to the inner surface of the front panel 752 of the box body 75 with its starting opening 78a positioned directly in front of the air purifier 9, and its terminal end extends, for example, to the right (toward the back of the booth B). A rectangular pillar-shaped terminal opening 781 that opens downward is formed on the underside of the extending end of the outlet duct 78. This terminal opening 781 corresponds to the exhaust outlet 7a of the chair 7, and is designed to allow air A1 purified by the air purifier 9 to be discharged downward from a portion near one end of the lower edge of the chair body 71. In other words, the exhaust outlet 7a in this embodiment is arranged in such a way that the air flow, which is the flow of air A1 immediately after being discharged, is unlikely to directly hit the seated occupant P.

[0036] On the other hand, as shown in Figures 3 to 7 and 10, the backrest 72 is disposed at the rear edge of the chair body 71 and comprises a lower cushion portion 722 attached to the inner surface of the side wall 3 of the booth B with its lower end surface facing the seat 73 of the chair body 71 via a gap, and an upper cushion portion 721 attached to the inner surface of the side wall 3 and positioned above the lower cushion portion 722. An air supply duct 723 is attached to the underside of the lower cushion portion 722. The air supply duct 723 is a rectangular pipe extending left and right, and has a number of slit-shaped air inlet holes 7b1 that form the air supply port 7b formed on its front surface, and a rectangular air outlet hole 724 formed on its back surface. The air supply duct 723 has a length corresponding to the left-right dimension of the backrest 72, and both left and right ends are closed. The front surface of this air supply duct 723 is located in the gap between the backrest 72 and the chair body 71, and air supply port 7b formed on this front surface faces the front of chair 7. In this chair 7, air supply port 7b, which draws in air A1 that has traveled from the front to the back side of seated person P and supplies it to air purifier 9, is located in a strip-shaped region at the lower edge of the front surface of backrest 72, stretching from one end to the other end in the width direction of chair 7.

[0037] As described above, in this chair 7, hollow plate-like bodies are attached to the backs of the chair body 71 and the backrest 72, and the plate-like bodies are used to form an air flow path for directing air A1 introduced from the air supply port 7b to the air purifier 9. Specifically, in this embodiment, as shown in Fig. 6, the side wall 3 of the booth B to which the backs of the chair body 71 and the backrest 72 are attached also serves as the plate-like body, and an air flow path 3E is formed within this side wall 3. In other words, an enclosed space surrounded by horizontal reinforcement members 32 and vertical reinforcement members 33 is formed between the backs of the chair body 71 and the backrest 72 and the outer plate 31 of the side wall 3, and this enclosed space functions as the air flow path 3E that communicates between the air outlet hole 724 of the air supply duct 723 provided in the backrest 7 and the inlet window 75a opened in the rear plate 753 of the chair body 71.

[0038] Additionally, booth B is also provided with a ventilation system associated with the chairs 7 for taking in outside air into the interior space IS and discharging it through the ceiling 5. This ventilation system introduces air A2 from the exterior space OS into the interior space IS via a ventilation fan 16 installed in the base panel 1, and discharges air A2 from the interior space IS (and a portion of the purified air A1) into the exterior space OS via an air vent 57 in the ceiling 5.

[0039] Next, the operation related to the chair 7 of this embodiment will be described.

[0040] When the air purifier 9 is operated to continuously discharge purified air A1 from the outlet window 9b, the purified circulating air A1 passes through the outlet duct 78 and is guided to the exhaust port 7a, from which it is sequentially discharged into the interior space IS. The purified air A1 released into the interior space IS rises while being supplied to the front side of the seated person P, but the air pressure behind the seated person P tends to be slightly lower than that on the front side due to the suction effect from the air inlet port 7b provided in the backrest 7. Some of the air A1 on the front side flows around the top of the head, shoulders, or flanks of the seated person P and is guided to the back side, where it is sucked in through the air inlet port 7b and returned to the air purifier 9. That is, air A1 introduced from the air inlet port 7b into the air supply duct 723 passes through the air outlet hole 724 of the duct 723 and is guided to the lower air flow path 3E and then to the entrance window 75a of the chair body 71. This air A1 is then guided through the inlet duct 77 to the intake window 9a of the air purifier 9 and circulated. Therefore, droplets of saliva and the like captured as the air passes in front of the seated person P can be purified by the air purifier 9 and circulated, making it possible to maintain a hygienic environment in the interior space IS of the booth B.

[0041] On the other hand, when power is supplied to the ventilation fan 16 provided on the base panel 1 to operate the ventilation system, outside air A2 is introduced into the box body 75 of the chair body 71 through the ventilation fan 16 and is guided to the internal space IS of the booth B through the gap between the box body 75 and the frame body 76, i.e., the outlet space 76s that connects the inside and outside of the box body 75. Then, the air A1 and A2 in the internal space IS are guided to the air flow path 5F in the ceiling 5 through the cutout 35a in the interior sound-absorbing panel 35 of the side wall 3 and the air flow path 3F in the upper part of the side wall 3, and are exhausted to the external space OS through the air vent 57 in the ceiling 5.

[0042] The ventilation system may be operated while the purification system that purifies the air A1 through the air purifier 9 is stopped, or may be operated simultaneously with the purification system. Even when the ventilation system is operated simultaneously with the purification system, a certain amount of air A1 containing droplets continues to be purified through the air purifier 9, so the ventilation system still has the effect of maintaining a good environment in the interior space IS.

[0043] In this embodiment, within the device housing chamber 71s, an air flow path for supplying outside air, in other words, a flow path for air A2 that is introduced into the device housing chamber 71s from the external space OS below by operating the above-mentioned ventilation system and led to the internal space IS from the outlet space 76s, and an air flow path for circulating air, in other words, a flow path for air A1 that is supplied to the air purifier 9 from the air intake port 7b by operating the purification system and led to the internal space IS from the exhaust port 7a, are arranged side by side and isolated from each other.

[0044] FIG. 1 is a perspective view of booth B according to this embodiment. FIG. 2 is a front view of booth B, and FIG. 3 is a front cross-sectional view of booth B. FIG. 4 is a cross-sectional view taken along line AA in FIG. 2. FIG. 5 is an exploded perspective view of booth B, omitting the ceiling 5 and front wall 2. FIG. 6 is an enlarged view of the essential parts of FIG. 4, and FIG. 7 is a further enlarged view of the essential parts of FIG. 6. FIG. 8 is a cross-sectional view taken along line XX in FIG. 7, and FIG. 9 is a cross-sectional view taken along line YY in FIG. 7. Note that in FIGS. 8 and 9, the frame 76 of the chair 7 is lightly colored. FIG. 10 is a view taken along arrow Z in FIG. 7. FIG. 11 is a perspective view showing the inlet duct 77, air purifier 9, outlet duct 78, and frame 76 according to this embodiment. FIG. 12 is an enlarged view of the air flow path 5F and its vicinity in the ceiling 5 of FIG. 3. In the above explanation, the air flow that circulates within booth B and is guided into air purifier 9 by operating the purification system is designated by the symbol A1, and is indicated by a dashed line in the figure. Also, the air flow that is taken in from the external space OS below booth B to the internal space IS and discharged to the external space OS above booth B by operating the ventilation system is designated by the symbol A2, and is indicated by a dashed line in the figure.

[0045] The booth B having such a configuration provides the following effects.

[0046] As described above, booth B forms an internal space IS isolated from external space OS and includes a base 1 that closes the bottom of internal space IS, peripheral walls (front wall 2, side wall 3, back wall 4) that surround the periphery of internal space IS, a ceiling 5 that closes the top of internal space IS, and a chair 7 that is disposed within internal space IS and has an air purifier 9 built in. It also includes an exhaust port 7a for discharging clean air A1 discharged from the air purifier 9 to the front of a seated person P, and an air intake port 7b for sucking the discharged air A1 behind the seated person P and returning it to the air purifier 9. By accommodating air purifier 9 within chair 7 in this way, it is possible to add an air purification function to booth B without narrowing the internal space IS. Furthermore, by arranging exhaust port 7a and air intake port 7b as described above, an air flow can be generated that is a flow of air A1 that flows from the front of seated person P, around the top of the seated person's head and both sides, and flows toward the back of the seated person P. Therefore, compared to forming a flat air curtain using a large duct, it is possible to add droplet spread suppression functionality with compact equipment.

[0047] That is, providing at least one of the exhaust outlet 7a and the intake port 7b in the chair 7 reduces the need to extend a duct from the chair 7. In particular, providing both the exhaust outlet 7a and the intake port 7b in the chair 7 as in this embodiment completely eliminates the need to extend a duct from the chair 7 that has the built-in air purifier 9. Therefore, from this point of view as well, it is possible to effectively prevent the interior space IS from becoming narrow.

[0048] Furthermore, if the chair 7 is provided with a chair body 71 having an apparatus housing chamber 71s housing the air purifier 9 below the seat 73, and a backrest 72 arranged on the chair body 71, then by housing the air purifier 9 in the apparatus housing chamber 71s, it is possible to effectively prevent noise emitted from the air purifier 9 from leaking into the internal space IS.

[0049] Moreover, if the air intake port 7b is provided on the backrest 72 side, the pressure can be reduced more easily on the back side of the seated person P than on the front side. This makes it easier to create a smooth flow of air A1 to remove droplets. Also, if the exhaust port 7a is provided on the chair body 71 side, which has the device housing chamber 71s that houses the air purifier 9, the purified air A1 discharged from the air purifier 9 can be released into the interior space IS in the shortest distance, preventing the need for complicated ducts and enabling effective use of space.

[0050] In addition, in this embodiment, the plate-like body attached to the back of the chair body 71 and backrest 72 of the chair 7 also serves as the side wall 3 of the booth B, and the inside of the side wall 3 is used as an air flow path 3E for guiding the air A1 introduced from the air intake 3b to the air purifier 9, thereby reducing the number of parts and simplifying the structure.

[0051] Furthermore, an air flow path for supplying outside air, in which air A2 is introduced from the external space OS into the equipment housing chamber 71s and led to the internal space IS through the exhaust port 7a, and an air flow path for circulating air, in which air A1 is supplied to the air purifier 9 through the air intake port 7b and led to the internal space IS through the exhaust port 7a, are arranged side by side within the equipment housing chamber 71s while being isolated from each other. This prevents the problem that would occur if the air flow path for supplying outside air and the air flow path for circulating air were to merge within the equipment housing chamber 71s, i.e., the fan 92 of the air purifier 9 would only draw in outside air from the ventilation fan, purify the outside air A2, and then exhaust it from the ceiling 5, making it impossible to create a flow for circulating air A1 within booth B.

[0052] The present invention is not limited to the above-described embodiment.

[0053] For example, in the above-described embodiment, the air inlet is located at the lower end of the chair back, and the exhaust port is located at the lower end of the chair body. However, the air inlet and exhaust port may be located away from the chair, or the air inlet may be located away from the chair and the exhaust port may be located on the chair, or the air inlet may be located on the chair and the exhaust port may be located away from the chair. Other examples of the location of the air inlet include a location near the seated person's shoulders, such as the upper end of the backrest or the interior board of the surrounding wall. Other examples of the location of the exhaust port include the floorboard. In this case, it is possible to guide the purified air discharged from the air purifier to the exhaust port through an air flow path provided in the base. Additionally, the chair provided in the booth of the present invention may not have a backrest. In this case, an air inlet may be located on the upper surface of the rear end of the chair body. The chair, consisting of only the chair body without a backrest, may have any shape, such as a rectangular column, a cylindrical column, a truncated pyramid, or a truncated cone.

[0054] Furthermore, in the above-described embodiment, the chair is attached to the inner surface of the peripheral wall, and the peripheral wall is used as an air flow path for directing the air introduced from the air intake port to the air purifier. However, for example, a passage may be provided that passes through the chair seat and connects the air intake port to the device housing chamber that houses the air purifier, and the air introduced from the air intake port may be directed to the air purifier via this passage.

[0055] Furthermore, in the embodiment described above with reference to Figures 1 to 12, the seat of the chair is fixed, but it would be better to arrange a chair like chair A7 shown in Figures 13 to 16 in the interior space of the booth, in which the seat A73 can be selectively taken between a closed position (C) that blocks the device storage chamber A71s and an open position (O) that opens the device storage chamber A71s upward.

[0056] This chair A7 has a configuration generally similar to that of the chair 7 of the above-described embodiment, but differs in the following respects.

[0057] More specifically, as shown in Figs. 13 to 16, the chair A7 has a chair body A71 having an apparatus housing chamber A71s housing the air purifier A9 below the seat A73, and a backrest A72 arranged on the chair body A71. A plate-like body A3 (a side wall of the booth in which the chair A7 is arranged) is attached to the back of the chair body A71 and the backrest A72. An exhaust port A7a is provided on the chair body A71 side for discharging clean air discharged from the air purifier A9 to the front of the seated person. An air intake port A7b is provided on the backrest A72 side for sucking in the air discharged from the exhaust port A7a behind the seated person and returning it to the air purifier. A93 is a maintenance door for accessing an electric dust collector (not shown) inside the air purifier A9. 13 to 16, the chair body A71 includes a box body A75 that is open upward and downward and that defines an equipment storage chamber A71s therein, a seat A73 that closes the equipment storage chamber A71s from above in the closed position (C), and a base frame A76 for positioning the box body A75. The box body A75 includes a top plate 751 on whose upper surface the seat A73 can be placed and that has an opening A75b for opening the equipment storage chamber A71s upward, a front plate 752 that hangs down from the front edge of the top plate 751, a rear plate (not shown) that hangs down from the rear edge of the top plate 751, and side plates 754 that connect the side edges of the front plate 752 and the rear plate. Furthermore, as described above, the seat A73 is configured to be able to selectively take a closed position (C) in which it is placed on the box body A75 and closes the device housing chamber A71s, and an open position (O) in which it is separated from the box body A75 and opens the device housing chamber A71s upward. Note that a concave-convex engaging portion (not shown) is provided between the upper plate A751 of the box body A75 and the seat A73 to determine positioning therebetween.

[0058] The backrest A72 has substantially the same configuration as the backrest 72 of the embodiment described above with reference to Figures 1 to 12. Specifically, it comprises a lower cushion portion A722 attached to the front surface of the plate-shaped body A3 with its lower end surface facing the seat A73(C) in the closed position via a gap, and an upper cushion portion A721 attached to the front surface of the plate-shaped body A3 and positioned above the lower cushion portion A722. An air intake duct A723 is attached to the underside of the lower cushion portion A722, and an air intake port A7b is provided in the air intake duct A723. Both lower corners A726 of the lower cushion portion A722 protrude downward and abut or are close to the seat A73(C) in the closed position, and a duct storage window A725 for storing the air intake duct A723 is provided between the two corners A726. An air intake port A7b is provided in the front face of the air intake duct A723, and both ends of the air intake port A7b in the longitudinal direction are closed by the lower end of the lower cushion portion A722.

[0059] When the air purifier A9 is operating, air is introduced into the air supply duct A723 from the air inlet port A7b, then passes through an air outlet hole (not shown) on the back of the air supply duct A723, an air flow path formed in the plate-shaped body A3 and communicating with the air outlet hole, and an inlet window (not shown) on the back of the box body A75 and communicating with the air flow path, and is then introduced to the air purifier A9 disposed in the device housing chamber A71s for purification. The box body A75 and base frame A76 have the same configuration as the box body 75 and base frame 76 of the chair 7 of the above-described embodiment, so purified air is introduced to the front of the chair A7 through a gap between the box body A75 and base frame A76. In this chair A7, the gap between the box body A75 and base frame A76 functions as an exhaust port A7a.

[0060] Here, Fig. 13 is an overall perspective view of chair A7, and Fig. 14 is a right side view of chair A7. Fig. 15 is an exploded perspective view showing how seat A73 of chair A7 can be attached or detached. Fig. 16 is a right side view showing how seat A73 of chair A7 can be attached or detached. Figs. 13 and 14 only show the state in which seat A73 is in the closed position (C). Figs. 15 and 16 show the state in which seat A73 is in the open position (O) in solid lines, and seat A73 in the closed position (C) in imaginary lines.

[0061] With this arrangement, the main effects of the present invention can be obtained, and the seat A73 can be placed in the open position (O) as needed to perform maintenance on the air purifier A9 and other devices inside the device housing chamber A71s.

[0062] In the above-described embodiment, the air flow path for supplying outside air, which is introduced from the external space into the device housing chamber and led to the internal space through the outlet, and the air flow path for circulating air, which is supplied to the air purifier through the air inlet and led to the internal space through the outlet, are arranged in parallel and isolated from each other within the device housing chamber, but the air flow path for supplying outside air may be omitted. Furthermore, when the air flow path for circulating air and the air flow path for supplying outside air are arranged in parallel as in the above-described embodiment, a ventilation fan for supplying outside air and an air purifier having a fan for circulating air may be selectively operated.

[0063] In addition, various modifications may be made without departing from the spirit of the present invention. [Explanation of symbols]

[0064] B…Booth 1…Bottom board 2...Peripheral wall (front wall) 3...Peripheral wall (side wall) 3E...Air flow path 4...Peripheral wall (back wall) 5...Ceiling 7, A7...Chair 71, A71...Chair body 71s, A71s...Device containment room 72, A72...backrest 73, A73… 7a, A7a... discharge outlet 7b, A7b… give me some energy 9…Air Purifier IS… Interior Space OS…external space P… seated person (C)...closing posture (O)...Open into position

Claims

1. A booth that forms an internal space isolated from an external space, The booth comprises a base that closes the bottom of the internal space, a peripheral wall that surrounds the periphery of the internal space, a ceiling that closes the top of the internal space, and a chair that is placed in the internal space and has an air purifier built in, as well as an exhaust port for discharging clean air discharged from the air purifier to the front of the seated person, and an air intake port for sucking the discharged air behind the seated person and returning it to the air purifier.

2. 2. The booth according to claim 1, wherein at least one of the exhaust port and the air inlet is provided in the chair.

3. The chair comprises a chair body having an apparatus housing chamber for housing the air purifier under the seat, and a backrest disposed on the chair body; 3. The booth according to claim 1, wherein the air inlet is provided on the backrest side.

4. The chair comprises a chair body having an apparatus housing chamber for housing the air purifier under the seat, and a backrest disposed on the chair body; 4. The booth according to claim 2, wherein the exhaust outlet is provided on the chair body side.

5. The chair is attached to the inner surface of the peripheral wall, 5. The booth according to claim 4, wherein the peripheral wall is used as an air flow path for guiding the air introduced through the air inlet to the air cleaner.

6. 5. The booth according to claim 3, wherein the seat is configured to be capable of selectively taking a closed position in which the equipment storage chamber is closed and an open position in which the equipment storage chamber is opened upward.

7. A booth as described in claims 3, 4, 5 or 6, in which an air flow path for supplying outside air, which is introduced from the external space into the equipment housing chamber and led to the internal space from the exhaust port, and an air flow path for circulating air, which is supplied to the air purifier from the air intake port and led to the internal space from the exhaust port, are arranged side by side within the equipment housing chamber while being isolated from each other.

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