booth

Abstract

This solves the problem of difficulty in improving sound insulation performance in portable booths that lack a base plate to seal off the lower part of the internal space. [Solution] In a portable booth B in which the panels for the surrounding walls are supported by a base frame 3 made of frame material 31, and casters 32 are provided on the base frame 3 to make it movable, a configuration is adopted in which the casters 32 are positioned in a position that is recessed into the base frame 3, with some exceptions.

Description

Technical Field

[0001] The present invention relates to a portable booth.

Background Art

[0002] Various booths have been developed that enable personal work operations and the like in an internal space surrounded by panels.

[0003] In such booths, in consideration of demands such as being able to enter and exit the internal space while remaining seated on a swivel chair, there are also booths that do not have a chassis for closing the lower surface of the internal space (see, for example, Patent Document 1).

[0004] When making such a booth portable, it is common to provide casters at the lower ends of the panels forming the internal space.

[0005] However, in such a booth, a relatively large gap is formed between the lower end of the panel for the peripheral wall and the floor surface. Therefore, when trying to make the internal space soundproof by adding a door panel, a ceiling panel, etc. to the panel for the peripheral wall, there arises a problem that sound leakage is likely to occur.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0007] An object of the present invention is to solve the problem that it is difficult to enhance soundproof performance in a portable booth that does not have a chassis for closing the lower surface of the internal space.

Means for Solving the Problems

[0008] The booth according to claim 1 is a portable booth in which the peripheral wall panels are supported on a base frame made of frame material, and casters are provided on the base frame to make it movable, wherein the casters are arranged in a position that is recessed into the base frame, with some exceptions.

[0009] The booth according to claim 2 is the same as that described in claim 1, wherein the caster is of the low-profile caster type, wherein the wheel is pivotally supported on a flat support and the direction of rotation of the wheel changes as the support rotates horizontally.

[0010] Here, "flat support structure" refers to a support structure whose maximum vertical dimension is smaller than its maximum horizontal dimension.

[0011] The booth according to claim 3 is the same as that described in claim 1 or 2, wherein the base frame has a continuous frame portion in which frame members are arranged in a continuous manner, and a frame member removal portion formed between the open ends of the frame members, the panel is supported in the continuous frame portion, and a door panel is arranged to open and close in the frame member removal portion.

[0012] The booth according to claim 4 is the same as that described in claim 3, except for the front The interior space is formed by covering at least three sides with panels for the surrounding walls, and the door panel is positioned on the front side corresponding to the portion of the base frame from which the frame material has been removed.

[0013] The booth according to claim 5 is the same as that described in claim 1, 2, 3, or 4, wherein the frame material of the base frame is channel-shaped and comprises an outer plate, an inner plate, and an upper plate connecting the upper edges of the outer plate and the inner plate, and the width dimension from the outer plate to the inner plate is set to be larger than the thickness dimension of the peripheral wall panel. [Effects of the Invention]

[0014] According to the present invention, it is possible to solve the problem that it is difficult to improve the sound insulation performance in a portable booth having no chassis for closing the lower surface of the internal space.

Brief Description of the Drawings

[0015] [Figure 1] Perspective view showing a booth according to an embodiment of the present invention. [Figure 2] Front view showing the booth according to the embodiment. [Figure 3] Cross-sectional view taken along the line X-X in FIG. 2. [Figure 4] Plan view showing the booth according to the embodiment. [Figure 5] Cross-sectional view taken along the line Y-Y in FIG. 2. [Figure 6] Bottom view showing the booth according to the embodiment. [Figure 7] Enlarged view of the main part in FIG. 3. [Figure 8] Enlarged view of the main part in FIG. 5. [Figure 9] Enlarged view of the main part in FIG. 5. [Figure 10] Enlarged view of the main part in FIG. 6. [Figure 11] Cross-sectional view taken along the line Z-Z in FIG. 10. [Figure 12] Front view showing another state of the booth according to the embodiment. [Figure 13] Exploded perspective view showing the booth according to the embodiment. [Figure 14] Exploded perspective view showing the connection mode between the column and the panel according to the embodiment. [Figure 15] Exploded perspective view showing the connection mode between the panels according to the embodiment. [Figure 16] Explanatory view showing the connection procedure of the members according to the embodiment. [Figure 17] Explanatory view showing the connection procedure of the members according to the embodiment. [Figure 18] Explanatory view showing the connection procedure of the members according to the embodiment. [Figure 19]An explanatory diagram showing the procedure for connecting the components according to the same embodiment. [Figure 20] An exploded perspective view showing the ceiling panel of the booth according to the same embodiment. [Figure 21] Cross section view along the WW line in Figure 5. [Modes for carrying out the invention]

[0016] One embodiment of the present invention will be described below with reference to Figures 1 to 21.

[0017] As shown in Figures 1-3, 5, 8, 9, and 11-13, booth B in this embodiment is a portable structure in which the peripheral wall panels 1 and 2 are supported on a base frame 3 made of frame material 31, and casters 32 are provided on the base frame 3 to make it movable. The casters 32 are arranged in a position that is recessed into the base frame 3, with some exceptions. As shown in Figure 11, the casters 32 are of the low-profile type, with wheels 325 pivotally supported on a flat support 323, and configured so that the direction of rotation of the wheels 325 changes as the support 323 rotates horizontally. As shown in Figures 12 and 13, the base frame 3 has a continuous frame material section 3A in which the frame material 31 are arranged in a continuous manner, and a frame material removal section 3B formed between the open ends 31a of the frame material 31. The panels 1 and 2 are supported on the continuous frame material section 3A, and a door panel 5 is arranged in the frame material removal section 3B so as to be openable and closable.

[0018] More specifically, Booth B is a personal booth for single use, and as shown in Figures 3, 5, 8, 9, and 12, it forms an interior space S by covering at least three sides, excluding the front, with peripheral wall panels 1 and 2. A door panel 5 is positioned at the front, which corresponds to the frame material removal portion 3B of the base frame 3. The upper surface of the room, which is the interior space S, is covered by a ceiling panel 9 equipped with a downward-discharging automatic fire extinguishing device 94.

[0019] As shown in Figures 5, 8, 9, 14, and 15, the peripheral wall panel 1 located on the side of booth B comprises a sheet metal side plate body 11 that forms the outer surface of booth B, and a sheet metal inner side plate 12 attached to the interior side (interior space S side) of the side plate body 11. The side plate body 11 is rectangular in shape, covering the side of the interior space S, and has horizontal plate portions 111 extending inward from its upper and lower edges. The front edge of the side plate body 11 has a forward-facing vertical plate portion 112 that extends towards the room, and an inward-facing vertical inner plate portion 113 that extends rearward from the extended end of these forward-facing vertical plate portions 112. Furthermore, the rear edge of the side panel body 11 is integrally provided with a first rearward-facing vertical plate portion 114 extending toward the room, an inward-facing vertical inner plate portion 115 extending forward from the extended end of the first rearward-facing vertical plate portion 114, and a second rearward-facing vertical plate portion 116 extending toward the room from the extended end of the inward-facing vertical plate portion 115. The inward-facing vertical plate portion 115, the second rearward-facing vertical plate portion 116, and the inner surface of the side panel inner plate 12 form a joint surface 1a that bends at a 90° angle in plan view. 13 is a soundproofing panel attached to the internal space S side of this peripheral wall panel 1. 14 is a wiring cover attached to the internal space S side of this peripheral wall panel 1. 16 is a table top used by users of this booth B. 17 is a bracket for attaching the table top 16 to the surrounding wall panels 1 and 2. 18 is a wiring duct provided on the underside of the table top 16.

[0020] As shown in Figures 5, 8, 14, and 15, the peripheral wall panel 2 located at the rear of booth B comprises a sheet metal back panel body 21 that forms the outer surface of booth B, and a sheet metal back panel inner panel 22 attached to the interior side of the back panel body 21. The back panel body 21 is rectangular in shape, covering the sides of the interior space S, and has horizontal plate portions 211 extending inward at its upper and lower edges. The left and right edges of the back panel body 21 are integrally provided with first outward-facing vertical plate portions 212 that extend forward, and forward-facing vertical plate portions 213 that extend inward from the extended ends of these first outward-facing vertical plate portions 212. The left and right edges of the back panel inner panel 22 are each provided with second outward-facing vertical plate portions 221 that extend rearward and are close to the forward-facing vertical plate portions 213 of the back panel body 21. The first outward-facing vertical plate portion 212, the forward-facing vertical plate portion 213, and the second outward-facing vertical plate portion 221 form a joint surface 2a that is bent at a 90° angle in plan view.

[0021] The base frame 3 is U-shaped in plan view, and as shown in Figures 6 and 12, casters 32 are arranged at four locations on its bottom surface. Specifically, as shown in Figures 6, 12, and 13, the base frame 3 has a continuous frame member section 3A in which frame members 31 are arranged in a continuous manner, and a frame member removal section 3B formed between the open ends 31a of the frame members 31. Panels 1 and 2 are supported in the continuous frame member section 3A, and a door panel 5 is arranged in the frame member removal section 3B so as to be openable and closable. As shown in Figures 3, 6, and 21, the frame member 31 of the base frame 3 is channel-shaped and comprises an outer plate 311, an inner plate 312, and an upper plate 313 connecting the upper edges of the outer plate 311 and the inner plate 312. The width dimension w from the outer plate 311 to the inner plate 312 is set to be larger than the thickness dimension t1 of the panels 1 and 2. Furthermore, caster seats 321 are fixed to the front and rear ends of the leg regions extending in the front and rear directions of the base frame 3, and casters 32 are provided on these caster seats 321, respectively.

[0022] As shown in Figure 11, the caster 32 comprises a support 323 that is horizontally pivotable on a caster seat 321 via a thrust bearing 322, and a wheel 325 that is pivotally supported on the support 323 via a pivot shaft 324, and a part of it, specifically the wheel 325, touching the ground Except for one half of the side, the entire caster 32 is housed inside the frame 31. In other words, the caster 32 is housed inside the frame 31 with only a portion of the wheel 325 protruding to the outside. This caster 32 is a low-profile caster type in which the wheel 325 is pivotally supported on a flat support 323, and the direction of rotation of the wheel 325 changes as the support 323 rotates horizontally. The flat support 323 has a maximum vertical dimension h that is smaller than its maximum horizontal dimension s.

[0023] Furthermore, an adjuster 33 is also attached to the caster seat 321. As shown in Figure 11, the adjuster 33 can be moved back and forth between a retracted state where the entire load is entrusted to the caster 32 and a protruding state where the entire load is not applied to the caster 32. That is, by lowering the adjuster 33 to the protruding state, the caster 32 can be made to a light ground contact state where it lightly touches the floor surface and no load is applied, or to a state where the caster 32 is floating above the floor surface. The adjuster 33 comprises a threaded rod 331 screwed into the caster seat 321 and a ground contact portion 332 provided at the lower end of the threaded rod 331. An engagement portion such as a hexagonal hole is formed at the upper end of the threaded rod 331 for engaging a height adjustment tool (not shown). A tool insertion hole 313a corresponding to the engagement portion of the adjuster 33 is formed in the upper plate 313 of the frame material 31, allowing the height of the adjuster 33 to be adjusted by rotating the threaded rod 331 from the indoor side. Specifically, the upper plate 313 of the frame material 31 in the base frame 3 has the peripheral wall panels 1 and 2 placed on its outer half, and the aforementioned tool insertion holes 313a are located on its inner half.

[0024] As described above, booth B comprises panels 1 and 2 for the surrounding walls, a door frame 4 positioned adjacent to these panels 1 and 2, and a base frame 3 that supports these panels 1 and 2 and the door frame 4 from below. The door frame 4 has a frame material removal portion 4B in a part corresponding to the frame material removal portion 3B of the base frame 3, and works in cooperation with the base frame 3 to form a closed loop frame structure in plan view.

[0025] More specifically, as shown in Figures 2, 12, and 13, the door frame 4 is a gate-type structure comprising a pair of support columns 41 erected on the open end 31a of the base frame 3, and a horizontal member 42 connecting the upper ends of these support columns 41, with a frame material removal section 4B positioned between the lower ends of both support columns 41. The upper ends of the surrounding wall panels 1 and 2, and the upper ends of the door frame 4 positioned adjacent to these panels 1 and 2, are fastened to the ceiling panel 9 and connected to each other.

[0026] The horizontal width dimension w of the base frame 3 is set to a value corresponding to the sum of the thickness dimensions t1 of the peripheral wall panels 1 and 2 and the thickness dimension t2 of the support column 41, as shown in Figure 5. The peripheral wall panels 1 and 2 are placed on the outer half of the base frame 3, and the support column 41 of the door frame 4 is erected on the inner half of the base frame 3. The inner front end of the peripheral wall panel 1 located on the side of the booth B and the outer side of the support column 41 are connected via a connector 6 that engages with the support column 41 by lowering the panel 1, as will be described later, and as shown in Figures 9, 12 to 14, and 16 to 19. The base frame 3 is provided with a fixing device 34 that prevents the panel 1 from moving upward after connection, as shown in Figures 3 and 13. The fastener 34 is a plate-shaped object having a bolt insertion hole 34a. By passing a bolt (not shown) through the bolt insertion hole 34a and screwing it into the panel 1, upward movement of the panel 1 relative to the base frame 3 is prevented, and the connected state by the connector 6 is maintained.

[0027] Furthermore, as shown in Figures 9 and 13, a projection 314 that protrudes upward is fixed to the upper surface of the base frame 3 near the open end 31a by welding or the like. The lower end of the door frame 4 (the lower end of the support column 41) is fitted onto the projection 314 and the two are screwed together so that the door frame 4 is fixed onto the base frame 3.

[0028] Here, we will explain the connection between the peripheral wall panels 1, which are arranged on the base frame 3, and the support columns 41 of the door frame 4. As mentioned above, this booth B is made up of multiple peripheral wall panels 1 and 2 and support columns 41 erected on the base frame 3, with panels 1 and 2 connected to each other, and panels 1 to support columns 41, by common connectors 6. As shown in Figures 13, 14, and 16 to 19, one end of the connector 6 engages with a slit 7s formed in the support column 41 or panel 1, and the other end engages with a slit 8s formed in other panels 1 and 2.

[0029] As shown in Figures 14 to 19, the connector 6 connects a first plate-shaped portion 7 with a slit 7s at one end for engagement and a second plate-shaped portion 8 with a slit 8s at the other end for engagement. The first plate-shaped portion 7 constitutes part of the support column 41 or panel 1, while the second plate-shaped portion 8 constitutes part of the other panels 1 and 2. Specifically, as shown in Figures 13 and 14, the connector 6 used on the front side of booth B connects the outer plate portion 411 (first plate-shaped portion 7) of the support column 41 in the door frame 4 with the inward-facing vertical plate portion 113 (second plate-shaped portion 8) of panel 1 located on the side of booth B. Furthermore, the connector used on the rear side of booth B, as shown in Figures 13 and 15, is for connecting the rearward-facing vertical plate portion 116 (first plate-like portion 7) of the peripheral wall panel 1 located on the side of booth B with the forward-facing vertical plate portion 213 (second plate-like portion 8) of the peripheral wall panel 2 located on the rear side of booth B.

[0030] However, the peripheral wall panel 1 located on the side of booth B and the peripheral wall panel 2 located on the back of booth B are connected by tightly engaging their bent joint surfaces 1a and 2a, as shown in Figures 8, 13, and 15. A portion of the joint surface 1a of one panel 1 (rearward-facing vertical plate portion 116) forms the first plate-like portion 7, and a portion of the joint surface of the other panel 2 (forward-facing vertical plate portion 213) that is in close contact with this first plate-like portion 7 forms the second plate-like portion 8.

[0031] As shown in Figures 14 to 19, the connector 6 comprises a bridge member 61 that penetrates both slits 7s and 8s of the first and second plate-shaped portions 7 and 8 to be connected, a first claw member 62 provided at one end of the bridge member 61 and engaging with the inner surface of the first plate-shaped portion 7, and a second claw member 63 provided at the other end of the bridge member 61 and engaging with the inner surface of the second plate-shaped portion 8, and is integrally made from, for example, a metal plate.

[0032] As shown in Figures 14 to 19, the first claw member 62 and the second claw portion 63 of the connector 6 are each equipped with upward-facing claw portions 621 and 631 that extend above the bridge member 61, and downward-facing claw portions 622 and 632 that extend below the bridge member 61. The upward-facing claw portion 621 and the downward-facing claw portion 622 of the first claw member 62 and the upward-facing claw portion 631 and the downward-facing claw portion 632 of the second claw member 63 have different shapes from each other, and as will be described later, they are able to engage with slits 7s and 8s of different shapes.

[0033] As shown in Figure 18, the slit 7s of the first plate-shaped portion 7 has an opening dimension d1 that is shorter than the vertical dimension h2 of the first claw member 62 of the connector 6, and is sized so that the first claw member 62 can be engaged with the slit 7s by a sliding motion, as shown in Figure 17. Similarly, as shown in Figure 18, the slit 8s of the second plate-shaped portion 8 has an opening dimension d2 that is longer than the vertical dimension h3 of the second claw member 63 of the connector 6, and is configured so that the first plate-shaped portion 7 and the second plate-shaped portion 8 can be connected as shown in Figure 19 by moving them relative to each other with the second claw member 63 inserted into the slit 8s of the second plate-shaped portion 8.

[0034] More specifically, at the front of booth B, as shown in Figure 14, a first plate-like portion 7 is placed on the outer surface of the support column 41, and a second plate-like portion 8 is placed on the inner surface of the peripheral wall panel 1 located on the side of booth B, with the front end of this panel 1 attached to the support column 41 via a connector 6. At the rear of booth B, as shown in Figure 15, the peripheral wall panel 1 located on the side of the booth and the peripheral wall panel 2 located on the back of the booth are connected by tightly engaging their bent joint surfaces 1a and 2a, with the first and second plate-like portions 7 and 8 constituting the two joint surfaces 1a and 2a being connected via a connector 6.

[0035] Here, the assembly procedure for the door frame 4 and the surrounding wall panel 1 will be specifically explained. First, from the state shown in Figure 16, the first claw member 62 of the connector 6 is attached to the slit 7s provided in the outer plate portion 411 (first plate-like portion 7) of the support column 41 of the door frame 4 by sliding it through the state shown in Figure 17. In this embodiment, four connectors 6 are attached to each of the left and right support columns 41 at a constant interval in the vertical direction. After that, as shown in Figure 18, by pressing the panel 1, with the slit 8s of the inward-facing vertical plate portion 113 (second plate-like portion 8) corresponding to each connector 6, against the support column 41, the second claw member 63 of each connector 6 can be inserted into the slit 8s of the panel 1. In this state, by lowering the panel 1 relative to the support column 41, the panel 1 and the support column 41 are connected via the connector 6 as shown in Figure 19. In this state, the rear end of the lower edge of panel 1 is screwed to the fixing device 34 of the base frame 3, thereby preventing panel 1 from moving upward and maintaining its connected state. From this state, the first claw member 62 of the connector 6 is inserted into the slit 7s formed in the rearward-facing vertical plate portion 116 (first plate-like portion 7) located at the rear end of the peripheral wall panel 1 located on the side of booth B. As shown in Figure 17, each is attached by a sliding motion. In this embodiment, four connectors 6 are attached to each of the left and right panels 1 at regular intervals in the vertical direction. Then, as shown in Figure 18, by pressing the peripheral wall panel 2 located at the back of booth B, which has a slit 8s in the forward-facing vertical plate portion 213 (second plate-like portion 8) corresponding to each connector 6, against the rear end of the panel 1 located on the side of booth B, the second claw portion 63 of each connector 6 can be inserted into the slit 8s of the panel 2. In this state, by lowering the panel 2 located at the back of booth B relative to the panel 1 located on the side of booth B, the panels 1 and 2 are connected to each other via the connectors 6 as shown in Figure 19. In this state, by fastening the door frame 4 and panels 1 and 2 to the ceiling body 91 of the ceiling panel 9 with screws or the like, relative vertical movement between the peripheral wall panel 2 located at the back of booth B and the peripheral wall panel 1 located on the side of booth B is prohibited, and the connected state of both panels 1 and 2 by the connectors 6 is maintained. Note that the number of connectors 6 is not limited to those mentioned above and can be set arbitrarily.

[0036] The door panel 5, positioned inside the door frame 4, is supported by the door frame 4 via a hinge 53, allowing it to open and close, with the right side in a front view being the hinge point, as shown in Figures 1, 2, 5, 6, 12, and 13, for example.

[0037] However, this booth B is a portable type as described above, and the base frame 3 has a continuous frame member section 3A in which frame members 31 are arranged in a continuous manner, and a frame member removal section 3B formed between the open ends 31a of the frame members 31, and panels 1 and 2 are supported on the continuous frame member section 3A, and a door panel 5 is arranged in the frame member removal section 3B so as to be openable and closable. Furthermore, as shown in Figures 7 and 12, the door panel 5 is provided with a floor contact member 54 at its lower end that protrudes in the direction of the floor in response to the opening and closing operation.

[0038] More specifically, booth B forms an internal space S by covering at least three sides, excluding the front, with peripheral wall panels 1 and 2. The base frame 3 has a continuous frame section 3A where frame members 31 are arranged in a continuous manner, and a frame section 3B where the frame members 31 are partially removed. A door panel 5 is positioned on the front where the frame section 3B is formed. As shown in Figures 7 and 9, the door panel 5 has a small end face 5a on the hinge side that allows the door frame to close when the door is closed. The structure includes a button 56 that contacts the floor contact member 4 and is pushed inward. When the button 56 is pressed, a member drive mechanism is provided that moves the floor contact member 54 from a standby position (H) away from the floor surface F to a floor contact position (L) where it is in contact with the floor surface F. The member drive mechanism converts the protrusion and retraction motion of the button 56 into an upward and downward motion of the floor contact member 54, and can be implemented using an appropriate mechanism such as a link or cam. The member drive mechanism is not shown in Figure 7.

[0039] As shown in Figures 1, 2, 5-7, and 12, the door panel 5 is mainly composed of a door body 50 made of sheet metal, for example, which corresponds to the internal shape of the door frame 4. A window 51 fitted with a transparent plate 51a is formed in the center of the door body 50. A channel-shaped member retaining frame 55, which opens downwards, is embedded in the lower edge of the door body 50, and the aforementioned floor contact member 54 is housed within this member retaining frame 55 so as to be able to protrude from and retract to the floor surface F. A member driving mechanism is also housed within this member retaining frame 55, but it is not shown in the illustration. The floor contact member 54 is made of an elastic material such as rubber and is held, for example, on the lower edge of an extruded material 57 that is housed within the member retaining frame 55 so as to be able to move up and down. 52 is a handle. 55a is a guide groove formed on the upper part of the member retaining frame 55 to guide the button 56 in the direction of movement and to prevent it from rotating.

[0040] The ceiling panel 9 is mainly composed of a ceiling body 91 made of sheet metal, for example. As shown in Figures 3, 4, 12, and 20, the ceiling body 91 has a rectangular shape in plan view that closes the upper surface of the internal space S. As shown in Figure 20, a ceiling front frame 911 is integrally erected at the front edge, side flanges 912 are integrally erected at the left and right side edges, and a rear flange 913 is integrally erected at the rear edge. The ceiling front frame 911 is screwed to the horizontal member 42 of the door frame 4, the side flanges 912 are screwed to the inner surface of the upper end of the peripheral wall panel 1 located on the side of the booth B, and the rear flange 913 is screwed to the inner surface of the upper end of the peripheral wall panel 2 located at the rear of the booth B. Multiple ceiling reinforcing members 914 extending to the left and right are fixed to the upper surface of the ceiling body 91 by welding or the like at intervals in the front and back.

[0041] Furthermore, as shown in Figures 3 and 20, an upper cover 92 is attached to the upper surface of the ceiling body 91, which has an opening 92a to avoid interference with the storage tank 941 and tank retainer 95, which will be described later. A fire extinguishing device support plate 93 is provided on the lower surface of this upper cover 92. An automatic fire extinguishing device 94 is placed on this fire extinguishing device support plate 93. The automatic fire extinguishing device 94 is a standard type comprising a storage tank 941 for storing fire extinguishing agent, a spray nozzle 942 protruding from the center of the lower surface of the storage tank 941, and a temperature detection means. When the temperature detection means detects that the internal space S has become hot, the fire extinguishing agent in the storage tank 941 can be sprayed from the spray nozzle 942 towards the internal space S. In this embodiment, a commercially available, widely used product (SPA-5 type sprinkler ace: product name, manufactured by Nippon Dry Chemical Co., Ltd.) is used as the automatic fire extinguishing device 94. The storage tank 941 of this automatic fire extinguishing device 94 is a flattened spherical shape with the largest diameter at the equatorial portion 941a in the vertical center, and this storage tank 941 is placed on the fire extinguishing device support plate 93. The fire extinguishing device support plate 93 has a circular through hole 93a with a diameter slightly smaller than the diameter of the equatorial portion 941a of the storage tank 941, and the lower half of the storage tank 941 can be fitted into this through hole 93a to stably hold the storage tank 941. When the storage tank 941 is stably held on the fire extinguishing device support plate 93, the spray nozzle 942 incorporating a temperature sensing means faces the internal space S through an opening 91a drilled in the ceiling body 91. In this embodiment, a tank retainer 95 is detachably mounted on one location of the fire extinguishing device support plate 93 by a screw or the like. The tank retainer 95 has a tank locking portion 951 at its upper end that holds the portion of the storage tank 941 above the equator portion 941a, preventing the storage tank 941 from lifting off the fire extinguishing device support plate 93. 96 is a vent. 97 is a ventilation fan.

[0042] Here, Figure 1 is a perspective view showing booth B of this embodiment. Figure 2 is a front view thereof. Figure 3 is a cross-sectional view along line XX in Figure 2. Figure 4 is a plan view showing booth B of this embodiment. Figure 5 is a cross-sectional view along line YY in Figure 2. Figure 6 is a bottom view showing booth B of this embodiment. Figure 7 is an enlarged view showing the lower end in Figure 3. Figure 8 is an enlarged view showing the rear end in Figure 5. Figure 9 is an enlarged view showing the front end in Figure 5. Figure 10 is an enlarged view showing the rear end in Figure 6. Figure 11 is a cross-sectional view along line ZZ in Figure 10. Figure 12 is a perspective view from the bottom side showing the door body 50 of booth B of this embodiment in an open state. Figure 13 is an exploded perspective view showing the mounting configuration of the peripheral wall panels 1 and 2 to the base frame 3 and door frame 4. Figure 14 is an exploded perspective view showing the mounting configuration of the peripheral wall panel 1 located on the side of booth B to the support column 41. Figure 15 is an exploded perspective view showing the connection configuration of the peripheral wall panels 1 and 2 to each other. Figures 16 to 19 are explanatory diagrams showing the procedure for connecting the members according to this embodiment. More specifically, Figure 16 shows the state immediately before attaching the connector 6 to the slit 7s provided in the first plate-shaped portion 7. Figure 17 shows the state in which the upward-facing claw portion 621 of the first claw member 62 of the connector 6 is inserted into the slit 7s provided in the first plate-shaped portion 7. Figure 18 shows the state in which the first claw member 62 of the connector 6 is inserted into the slit 7s provided in the first plate-shaped portion 7 and the second plate-shaped portion 8 is brought close to the connector 6. Figure 19 shows the state in which the first claw member 62 of the connector 6 is inserted into the slit 7s provided in the first plate-shaped portion 7 and the second claw member 63 is inserted into the slit 8s provided in the second plate-shaped portion 8. Figure 20 is an exploded perspective view showing the ceiling panel 9 of booth B according to this embodiment. Figure 21 is a cross-sectional view along the WW line in Figure 5.

[0043] <Effects of the Embodiment> With this configuration, the casters 32 are positioned so that they are partially recessed into the base frame 3. Therefore, even though movement by the casters 32 is possible, the gaps SP (SP1, SP2, SP3) formed between the lower end of the base frame 3 and the floor surface F, as shown in Figure 21, can be made as small as possible. As a result, it is possible to effectively suppress sound from the internal space S leaking to the outside through these gaps SP.

[0044] In particular, in this embodiment, the caster 32 is of the low-profile caster type, in which a wheel 325 is pivotally supported on a flat support 323, and the direction of rotation of the wheel 325 changes as the support 323 rotates horizontally. Therefore, even if most of the caster 32 is placed inside the base frame 3, the vertical dimension of the base frame 3 does not become excessive.

[0045] Furthermore, in this embodiment, the base frame 3 has a continuous frame material portion 3A and a frame material removal portion 3B. Panels 1 and 2 are supported on the continuous frame material portion 3A, and the door panel 5 is arranged in the frame material removal portion 3B so that it can be opened and closed. This eliminates the step between the interior space S and the exterior space O, allowing for smooth entry and exit to the interior space S even while seated in a wheelchair, with the door body 50 of the door panel 5 open.

[0046] Furthermore, in this embodiment, the frame material 31 of the base frame 3 is channel-shaped, comprising an outer panel 311, an inner panel 312, and an upper panel 313 connecting the upper edges of the outer panel 311 and the inner panel 312. Therefore, as shown in Figure 21, the gap SP1 between the lower edge 311 of the outer panel and the floor surface F, the gap SP2 between the upper panel 313 and the floor surface F, and the gap SP3 between the lower edge of the inner panel 312 and the floor surface F change sequentially from small to large to small. As a result, the internal space S and the external space O are partitioned by multiple types of gaps SP1, SP2, and SP3 that can exert a labyrinthine effect, and sound leakage can be suppressed particularly effectively. In this case, the width dimension w from the outer panel 311 to the inner panel 312 is set to be larger than the thickness dimension t1 of the panels 1 and 2. Therefore, it becomes possible to expand the area in which a labyrinthine effect can be achieved, and in particular, a good sound leakage effect can be obtained.

[0047] In addition, since the width dimension w from the outer plate 311 to the inner plate 312 of the frame material 31 is set to be larger than the thickness dimension t1 of the surrounding wall panels 1 and 2, for example, the surrounding wall panels 1 and 2 can be supported on the outer half of the frame material 31, and a tool insertion hole 313a corresponding to the engagement portion of the adjuster 33 can be provided on the inner half of the upper plate 313 of the frame material 31, and the adjuster 33 can be adjusted from the internal space S side by inserting a tool through this tool insertion hole 313a.

[0048] However, the present invention is not limited to the embodiments described above.

[0049] For example, if the casters are positioned so that they are partially recessed into the base frame, it is not necessary to use a configuration in which low-profile casters are placed within the frame material of a base frame constructed using channel-shaped frame material, as in the embodiment described above. However, if the casters are of the low-profile type, where the wheels are pivotally supported on a flat support and the direction of rotation of the wheels changes with the horizontal rotation of the support, then, as described above, even if most of the casters are placed within the base frame, it is possible to suppress the excessive vertical dimension of the base frame. Furthermore, if the casters are placed within the frame material of a base frame constructed using channel-shaped frame material, it is possible to use the frame material formed by extrusion or the like without specially providing recesses in the frame material to accommodate the casters, thus suppressing an increase in processing time.

[0050] Furthermore, the shape of the base frame is not limited to one with a frame material removal section on the front, as in the embodiment described above, but may also have a frame material removal section on the side. Moreover, it is not limited to one with a frame material removal section covering substantially the entire width dimension of the front or substantially the entire depth dimension of the side, but various configurations may be adopted, such as one with a frame material removal section covering only a part of the front or side, or one with a frame material removal section spanning both the front and side.

[0051] The number of panels is not limited to three. That is, the peripheral wall panels located on the sides or back of the booth may be divided into multiple panels, and if the design provides a frame material removal section only on part of the front or side, panels may also be supported on other parts of the front or side, i.e., the parts that are continuous with the frame material.

[0052] In the illustrated example, the tabletop is set to a height suitable for use while seated, but it may also be set to a height suitable for use while standing.

[0053] Furthermore, various modifications are permitted as long as they do not impair the spirit of the present invention. [Explanation of symbols]

[0054] B... Booth 1, 2... Panels for the surrounding wall 3…Base frame 3A...Continuous section of frame material 3B… Frame material removed part 31…Frame material 31a... Open end of frame material 311... Exterior panel 312…Inner plate 313... Upper plate 32... Caster 323...Support 325...Wheel 5…Door panel w...Width dimension of the frame material t1…Thickness dimension of the panel for the surrounding wall S…interior space

Claims

1. A portable booth is provided in which the panels for the surrounding walls are supported by a base frame made of frame material, and casters are attached to the base frame to make it movable. A booth in which the casters, with some exceptions, are positioned to be recessed into the base frame.

2. The booth according to claim 1, wherein the caster is of the low-profile caster type, wherein the wheel is pivotally supported on a flat support, and the direction of rotation of the wheel changes as the support rotates horizontally.

3. The booth according to claim 1 or 2, wherein the base frame has a continuous frame portion in which frame members are arranged in a continuous manner, and a frame member removal portion formed between the open ends of the frame members, the panel is supported in the continuous frame portion, and a door panel is arranged in the frame member removal portion so as to be openable and closable.

4. The interior space is formed by covering at least three sides, excluding the front, with panels for the surrounding walls. The booth according to claim 3, wherein the door panel is positioned on the front side corresponding to the portion of the base frame from which the frame material has been removed.

5. The frame material of the base frame is channel-shaped, comprising an outer plate, an inner plate, and an upper plate connecting the upper edges of the outer plate and the inner plate, and the width dimension from the outer plate to the inner plate is set to be greater than the thickness dimension of the peripheral wall panel, according to claim 1, 2, 3, or 4.

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