Paint booth and paint booth system

Abstract

To provide a coating booth which can easily secure an air volume required for ventilation even if the booth body is enlarged. [Solution] The painting booth 10 of the present invention comprises a booth body 20 that is extendable and contractible in a horizontal first direction X, an air supply device 50 provided at one end of the booth body 20 in the first direction X, and an exhaust device 80 provided at the other end of the booth body 20 in the first direction X. When the booth body 20 is extended, a painting space that accommodates an object to be painted is formed inside the booth body 20, the air supply device 50 supplies air to the painting space from one end in the first direction X, and the exhaust device 80 exhausts air from the other end in the first direction X. When the booth body 20 is contracted, a second horizontal direction perpendicular to the first direction X and the upward direction of the painting space are opened.

Description

[Technical field]

[0001] The present invention relates to a paint booth capable of painting objects in a clean environment, and a paint booth system in which the paint booth is installed inside a building. [Background technology]

[0002] 2. Description of the Related Art There have been proposed coating booths in which a coating space for accommodating an object to be coated is formed inside an expandable and contractible booth body (see, for example, Patent Documents 1 and 2 listed below).

[0003] In this type of painting booth, an air intake port with a filter is provided at one end of the booth body in the extension / retraction direction, and an air exhaust port connected to an exhaust fan via a filter is provided at the other end in the extension / retraction direction.The exhaust fan is operated to take in outside air through the air intake port and forcibly exhaust the air in the painting space to the outside. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Utility Model Application Publication No. 52-51357 [Patent Document 2] Japanese Patent Application Publication No. 8-164351 Summary of the Invention [Problem to be solved by the invention]

[0005] A paint booth with an expandable body can be used for painting large objects because it is relatively easy to increase the size of the booth body, and by shrinking the booth body when not in use, the freed up space can be used for purposes other than painting.

[0006] However, in conventional painting booths where the booth body is extendable and contractible, the exhaust fan is used to take in outside air through the air intake and forcibly expel the air in the painting space to the outside, and as the booth body becomes larger, it becomes difficult to ensure the volume of air required for ventilation.

[0007] The present invention has been made in consideration of the above-mentioned points, and an object of the present invention is to provide a paint booth and a paint booth system that can easily ensure the amount of air required for ventilation even if the booth body is large. [Means for solving the problem]

[0008] The present invention includes the embodiments set forth below.

[0009] [1] A coating booth comprising: a booth body that is extendable and contractible in a horizontal first direction; an air supply device provided at one end of the booth body in the first direction; and an exhaust device provided at the other end of the booth body in the first direction, wherein, when the booth body is extended, a coating space that accommodates an object to be coated is formed inside the booth body, the air supply device supplies air to the coating space from one end in the first direction and the exhaust device exhausts air from the other end in the first direction, and, when the booth body is contracted, a horizontal second direction perpendicular to the first direction and an upward direction of the coating space are opened.

[0010] [2] The booth body comprises a first booth body having one end in the first direction fixed to the air supply device and the other end in the first direction forming a movable end movable in the first direction, a second booth body having one end in the first direction fixed to the exhaust device and the other end in the first direction forming a movable end movable in the first direction, and a connection and separation part that connects and separates the movable end of the first booth body and the movable end of the second booth body, wherein, when the first booth body and the second booth body are extended, the connection and separation part connects the movable end of the first booth body and the movable end of the second booth body to form the painting space inside the first booth body and the second booth body, and when at least one of the first booth body and the second booth body is contracted, the connection and separation part separates the first booth body and the second booth body to open the second direction and an upward direction of the painting space.

[0011] [3] The booth body has one end in the first direction fixed to either the air intake device or the exhaust device, and the other end in the first direction forming a movable end movable in the first direction, and is provided with a connection and separation part which connects and separates the movable end and either the air intake device or the exhaust device from the other, and when the booth body is extended, the connection and separation part connects the movable end of the booth body to the other of the air intake device and the exhaust device to form the painting space inside the booth body, and when the booth body is contracted, the booth body and either the air intake device or the exhaust device are separated from the other to open the second direction and the upward direction of the painting space.

[0012] [4] The booth body comprises a booth frame and a sheet member attached to the booth frame and forming the painting space inside, the booth frame comprises a plurality of frame bodies arranged in the first direction and a connecting body connecting adjacent frame bodies in the first direction, the connecting body having a movable connecting portion connecting the frame bodies to each other so as to change the spacing in the first direction, and a fixed connecting portion connecting the frame bodies to each other while keeping the spacing in the first direction constant, the frame body arranged at the movable end of the first booth body is connected to the frame body adjacent in the first direction by the fixed connecting portion, and the frame body arranged at the movable end of the second booth body is connected to the frame body adjacent in the first direction by the fixed connecting portion.

[0013] [5] The booth body comprises a booth frame and a sheet member attached to the booth frame and forming the painting space inside, the booth frame comprises a plurality of frame bodies arranged in the first direction and a connecting body connecting adjacent frame bodies in the first direction, the connecting body having a movable connecting portion connecting the frame bodies to each other so as to change the spacing in the first direction, and a fixed connecting portion connecting the frame bodies to each other while keeping the spacing in the first direction constant, the frame body arranged at the movable end of the booth body is connected to the frame body adjacent in the first direction by the fixed connecting portion.

[0014] [6] A painting booth described in any one of [1] to [5] above, wherein the booth main body comprises a booth frame and a sheet member attached to the booth frame and forming the painting space inside, the booth frame comprises a plurality of frame bodies arranged in the first direction and a connecting body connecting the frame bodies adjacent to each other in the first direction, the connecting body comprising a movable connecting portion connecting the frame bodies to each other so as to change the spacing in the first direction, and a fixed connecting portion connecting the frame bodies to each other while keeping the spacing in the first direction constant, and a door is provided between the frame bodies connected by the fixed connecting portions.

[0015] [7] A paint booth described in any one of [1] to [6] above, wherein the booth body comprises a booth frame and a sheet member attached to the booth frame and forming the painting space inside, and the lower edge of the sheet member contacts the installation surface on which the booth body is installed.

[0016] [8] A paint booth as described in [7] above, comprising a sheet holding portion that holds the lower edge portion of the sheet member above the installation surface.

[0017] [9] The paint booth described in [8] above, wherein the booth frame comprises a plurality of frame bodies arranged in the first direction, and the sheet holding portion comprises a movable connecting portion for sheets having a movable portion that connects the frame bodies adjacent to each other in the first direction so as to change the spacing between the frame bodies and moves upward when the spacing between the frame bodies is reduced, and a connection portion that connects the movable portion to the sheet member, and wherein when the spacing between the frame bodies is reduced, the movable portion moves upward to move the lower edge portion of the sheet member above the installation surface.

[0018]

[10] A paint booth as described in [2] or [4] above, wherein the connection and separation portion is provided at the movable end of the second booth body, and comprises an insertion recess into which the movable end of the first booth body is inserted, and a sealing member provided so as to protrude inward from the insertion recess, and the sealing member contacts the outer peripheral surface of the first booth body inserted into the insertion recess.

[0019]

[11] A painting booth as described in [2] or [4] above, wherein the connection and separation portion is provided at the movable end of the first booth body, and comprises an insertion recess into which the movable end of the second booth body is inserted, and a sealing member provided so as to protrude inward from the insertion recess, and wherein the tip of the sealing member contacts the outer peripheral surface of the second booth body when pushed toward the air supply device by the movable end of the second booth body inserted into the insertion recess.

[0020]

[12] A paint booth as described in [3] or [5] above, wherein the booth body has one end in the first direction connected to the exhaust device and the connecting and separating part provided at the other end in the first direction, the connecting and separating part comprising an insertion recess into which the air supply device is inserted and a sealing member provided so as to protrude inward from the insertion recess, the sealing member contacting the outer peripheral surface of the air supply device inserted into the insertion recess.

[0021]

[13] A paint booth as described in [3] or [5] above, wherein the booth body has one end in the first direction connected to the air supply device and the connecting and separating part at the other end in the first direction, the connecting and separating part having an insertion recess into which the exhaust device is inserted and a sealing member arranged to protrude inward from the insertion recess, and a tip of the sealing member contacts the outer peripheral surface of the exhaust device when pushed toward the air supply device by the exhaust device inserted into the insertion recess.

[0022]

[14] A painting booth described in any one of [1] to

[13] above, wherein the booth main body comprises a booth frame and a sheet member attached to the booth frame and forming the painting space inside, and the booth frame comprises a plurality of frame bodies arranged in the first direction and movable in the first direction, a connecting body connecting the frame bodies adjacent to each other in the first direction, and a lighting device provided on at least a portion of the plurality of frame bodies.

[0023]

[15] A painting booth described in any one of [1] to

[14] above, wherein the booth main body comprises a booth frame and a sheet member attached to the booth frame and forming the painting space inside, the booth frame comprises a plurality of frame bodies arranged in the first direction, a connecting body connecting the frame bodies adjacent to each other in the first direction, and a guide rail for guiding the plurality of frame bodies in the first direction, the guide rail being embedded in an installation surface on which the booth main body is installed.

[0024]

[16] The coating booth according to any one of the above [1] to

[15] , wherein the air supply device includes a heat source for heating the air to be supplied to the coating space.

[0025]

[17] A paint booth described in any one of [1] to

[16] above, wherein the booth body comprises a booth frame and a sheet member attached to the booth frame and forming the painting space inside, and the sheet member has a translucent portion through which light passes in at least a portion of the portion covering the ceiling of the booth body.

[0026]

[18] A paint booth system in which the paint booth described in

[17] above is installed inside a building in which a lighting device is provided, the lighting device being positioned above the booth body, and the light irradiated from the lighting device being taken into the booth body through the translucent portion to illuminate the paint space. Effect of the Invention

[0027] According to the present invention, the air intake device supplies air to the painting space formed inside the booth body from one end in the first direction, and the exhaust device exhausts air from the other end in the first direction, so that the painting space can be ventilated with a relatively small amount of air, and it is easy to ensure the amount of air required for ventilation even if the booth body is large. [Brief description of the drawings]

[0028] [Figure 1] FIG. 1 is a front view of a paint booth according to a first embodiment of the present invention in use; [Diagram 2] Plan view of the paint booth in Figure 1 when in use [Diagram 3] FIG. 1 is a front view of a paint booth according to a first embodiment of the present invention in a contracted state; [Figure 4] FIG. 1 is a view of a first booth body of a paint booth according to a first embodiment of the present invention, viewed from a first direction. [Diagram 5] FIG. 1 is a front view of a paint booth according to a second embodiment of the present invention in use; [Figure 6] A front view of the paint booth in a reduced size as shown in FIG. [Figure 7]FIG. 11 is a front view of a paint booth system according to a third embodiment of the present invention in use; [Figure 8] Plan view of the paint booth system of FIG. 7 in use [Figure 9A] FIG. 11 is an enlarged view of a main part of the booth body of the first modified example seen from a first direction, showing a state in which a lower side portion of the sheet member comes into contact with an installation surface. [Figure 9B] FIG. 11 is an enlarged view of a main part of the booth body of the first modified example seen from a first direction, illustrating a state in which the sheet holding part holds the lower side part of the sheet member above the installation surface. [Figure 10A] FIG. 11 is an enlarged front view of a main part of the booth body of the second modified example, showing a state in which the lower side of the sheet member comes into contact with the installation surface. [Figure 10B] FIG. 11 is an enlarged front view of a main part of the booth body of the second modified example, showing a state in which the sheet holding part holds the lower side part of the sheet member above the installation surface. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] 1. First embodiment A first embodiment of the present invention will be described below with reference to FIGS.

[0030] (1) Overall configuration of the paint booth 10 The paint booth 10 of this embodiment includes a booth body 20, an air intake device 50, and an exhaust device 80. The paint booth 10 is provided with the air intake device 50 at one end in a horizontal first direction X, and the exhaust device 80 at the other end, with the air intake device 50 and the exhaust device 80 disposed at an interval in the first direction X. Between the air intake device 50 and the exhaust device 80, a guide rail R extending along the first direction X is laid on an installation surface G. The booth body 20 extending in the first direction X is provided on the guide rail R, and a paint space for painting an object is formed inside the booth body 20.

[0031] (2) Booth body 20 The booth body 20 is provided so as to slide on a guide rail R extending along the first direction X and expand and contract in the first direction X. When expanded, the booth body 20 connects the air intake device 50 and the exhaust device 80 to form a coating space therein. When the booth body 20 slides from the expanded state in the first direction X to contract, it opens the horizontal second direction Y perpendicular to the first direction X of the coating space and the upper side.

[0032] In this embodiment, the booth body 20 is divided into two in the first direction X. Specifically, the booth body 20 is divided into a first booth body 20A disposed on one side in the first direction X and a second booth body 20B disposed on the other side in the first direction X, and is provided with a connection / separation part 40 that connects and separates the first booth body 20A and the second booth body 20B.

[0033] The first booth body 20A has one end in the first direction X connected to the air supply device 50 and fixed so as not to move in the first direction X, and the other end in the first direction X (the end on the exhaust device 80 side) is a movable end 20A1 that can slide on a guide rail R and move in the first direction X.

[0034] One end of the second booth body 20B in the first direction X is connected to the exhaust device 80 and fixed so as not to move in the first direction X, and the other end in the first direction X (the end on the air supply device 50 side) is a movable end 20B1 that can slide on the guide rail R and move in the first direction X.

[0035] 1 and 2, when the first booth body 20A and the second booth body 20B are extended, the movable end 20A1 of the first booth body 20A and the movable end 20B1 of the second booth body 20B come into contact with each other in the first direction X, or face each other at a predetermined distance in the first direction X. The space between the movable end 20A1 of the first booth body 20A and the movable end 20B1 of the second booth body 20B is sealed by the connecting and separating part 40, thereby connecting the first booth body 20A and the second booth body 20B to form a continuous painting space inside.

[0036] In addition, when at least one of the first booth body 20A and the second booth body 20B shrinks from a connected state, the connection between the first booth body 20A and the second booth body 20B by the connection / separation section 40 is released, and the second direction Y and the upward direction of the painting space are opened.

[0037] (3) Expandable structure of the booth body 20 Next, we will explain the telescopic structure of the booth body 20. The first booth body 20A and the second booth body 20B that make up the booth body 20 have a common basic structure. Here, we will explain the first booth body 20A fixed to the air supply system 50, and for the second booth body 20B fixed to the exhaust system 80, the same components as those in the first booth body 20A will be assigned the same reference numerals and detailed explanations will be omitted.

[0038] The first booth body 20A includes a booth frame 21 that constitutes the framework of the first booth body 20A, and a bellows-shaped sheet member 22 that covers the outer periphery of the booth frame 21.

[0039] The booth frame 21 includes a plurality of frame bodies 23 arranged side by side in the first direction X, and connecting portions 24a, 24b that connect adjacent frame bodies 23 in the first direction X to each other.

[0040] As shown in Figure 4, the frame body 23 is approximately C-shaped or approximately U-shaped, with a frame upper portion 23a extending in the second direction Y at a position above the installation surface G, and leg portions 23b extending downward from both ends of the frame upper portion 23a in the second direction Y.

[0041] A roller 25 that rolls on a guide rail R is provided at the lower end of the leg 23b. In this embodiment, the guide rail R is provided in a groove 26 that is recessed downward from the installation surface G, and is provided so as not to protrude upward from the installation surface G, and the guide rail R is provided in the groove 26 so that the upper surface of the guide rail R is at the same height as the installation surface G. Note that the guide rail R may be provided on the installation surface G without providing the groove 26 in the installation surface G, and the guide rail R may be provided so as to protrude from the installation surface G.

[0042] The connecting portions 24a, 24b include a fixed connecting portion 24a that connects the frame bodies 23 while keeping the interval in the first direction X constant, and a movable connecting portion 24b that connects the frame bodies 23 in a manner that allows the interval in the first direction X to be changed. The movable connecting portion 24b includes a diagonal member 24b2 that is connected in an X-shape by a pin 24b1, and the diagonal member 24b2 rotates around the pin 24b1 to change the interval of the frame bodies 23 connected to the diagonal member 24b2.

[0043] In the first booth body 20A, the frame body 23 provided at the movable end 20A1 is connected by fixed connecting parts 24a to adjacent frame bodies 23 in the first direction X so as to maintain a constant distance therebetween. In this embodiment, the fixed connecting parts 24a include a first fixed connecting part 24a1 that connects the leg parts 23b of the frame bodies 23 adjacent in the first direction X to each other, and a second fixed connecting part 24a2 that connects the frame upper parts 23a to each other.

[0044] A door 28 is provided between the legs 23b of the frame bodies 23 connected by the fixed connecting parts 24a (i.e., between the leg part 23b of the frame body 23 provided at the movable end 20A1 and the leg part 23b of the frame body 23 adjacent to that frame body 23 in the first direction X). In a state in which the first booth body 20A and the second booth body 20B are connected as shown in Fig. 1, a worker can move inside and outside the painting space through the door 28.

[0045] In this embodiment, as shown in Figures 1 and 3, the frame body 23 provided at the movable end 20A1 has the upper part of the leg 23b connected by the first fixed connecting portion 24a1, and the door 28 is provided below the first fixed connecting portion 24a1, but the frame body 23 may also be connected by providing fixed connecting portions 24a extending horizontally above and below the door 28.

[0046] An illumination device 27 for illuminating the painting space is provided on the upper frame portion 23a of the frame body 23 and below the second fixed connecting portion 24a2.

[0047] The sheet member 22 is made of an opaque fabric made of resin such as polyester. The sheet member 22 has a top surface portion 22a that covers the frame upper portions 23a of the multiple frame bodies 23 and a side surface portion 22b that covers the leg portions 23b of the multiple frame bodies 23.

[0048] The side surface portions 22b of the sheet member 22 are provided longer in the up-down direction than the legs 23b of the frame body 23, and the bottom side portion 22c of the sheet member 22 is in contact with the installation surface G. In this embodiment, the bottom side portion 22c of the sheet member 22 is in contact with the installation surface G over the entirety in the first direction X, but a part of the bottom side portion 22c of the sheet member 22, such as a portion where the door 28 is provided or a portion connected by the fixed connecting portion 24a, may be separated from the installation surface G.

[0049] In this embodiment, as shown in Figures 1 and 4, a case will be described in which the sheet member 22 is provided so as to cover the outside of the booth frame 21, but the sheet member 22 may also be provided so as to cover the inside of the booth frame 21.

[0050] Note that the sheet member 22 may have a light-transmitting portion 22d in which the top surface portion 22a or the side surface portion 22b is replaced with a light-transmitting transparent fabric at a predetermined location. Alternatively, the entire sheet member 22 may be made of a light-transmitting transparent fabric.

[0051] In the first booth body 20A thus configured, by sliding the frame bodies 23 along the guide rails R toward the air supply device 50, the diagonal members 24b2 connected by the pins 24b1 rotate, narrowing the gap between the adjacent frame bodies 23 as shown in Fig. 3. In response to the narrowing of the gap between the frame bodies 23, the sheet member 22 is folded in an accordion-like shape.

[0052] In the first booth body 20A, by sliding the frame bodies 23 along the guide rails R so as to move away from the air supply device 50, the diagonal members 24b2 connected by the pins 24b1 rotate, and the interval between the adjacent frame bodies 23 increases as shown in Fig. 1. In response to the increase in the interval between the frame bodies 23, the sheet member 22 folded in an accordion-like shape increases in the first direction X.

[0053] (4) Connection separation part 40 The coupling / separation part 40 is provided at the movable ends 20A1, 20B1 of either the first booth body 20A or the second booth body 20B. In this embodiment, a case where the coupling / separation part 40 is provided in the second booth body 20B will be described, but the coupling / separation part 40 may be provided in the first booth body 20A.

[0054] The connection / separation part 40 is provided in a frame shape expanding in the second direction Y and upward from the movable end 20B1 of the second booth body 20B. The connection / separation part 40 is provided with an insertion recess 41 opening in the first direction X, and a sealing member 42 provided so as to protrude inward from the peripheral edge of the insertion recess 41. The insertion recess 41 is a recess into which the movable end 20A1 of the first booth body 20A can be inserted, and communicates with a coating space formed inside the second booth body 20B. The sealing member 42 is a plate-shaped member made of a rubber-like elastic material such as neoprene rubber.

[0055] When the first booth body 20A and the second booth body 20B are extended, the first booth body 20A is inserted into the insertion recess 41 from the movable end 20A1 by a predetermined length in the first direction X. When the movable end 20A1 of the first booth body 20A is inserted into the insertion recess 41, the tip of the sealing member 42 is pushed toward the exhaust device 80 by the movable end 20A1. As a result, as shown in FIG. 1, the sealing member 42 is curved so that the inclination angle with respect to the horizontal direction increases from the tip to the base toward the air supply device 50, and comes into contact with the outer circumferential surface of the first booth body 20A. As a result, the first booth body 20A and the second booth body 20B are connected to each other.

[0056] The sealing member 42 comes into contact with the outer peripheral surface of the first booth body 20A inserted into the insertion recess 41 (i.e., the upper surface of the first booth body 20A and the surface facing the second direction Y). This seals the space between the connection / separation part 40 and the first booth body 20A, thereby improving the airtightness of the coating space formed inside the first booth body 20A and the second booth body 20B.

[0057] In this embodiment, by providing the connection / separation part 40 at the movable end 20B1 of the second booth body 20B connected to the exhaust device 80, the movable end of the first booth body 20A that sends out air fits inside the movable end of the second booth body 20B that receives air. This makes it possible to prevent air flowing through the coating space from flowing out to the outside through the connection / separation part 40.

[0058] (5) Air Intake System 50 and Exhaust System 80 1 to 3, an air supply device 50 is connected and fixed to one end in the first direction X of the first booth body 20A, and an exhaust device 80 is connected and fixed to one end in the first direction X of the second booth body 20B. The air supply device 50 and the exhaust device 80 are each fixed to an installation surface G.

[0059] The booth bodies 20A, 20B can be connected and fixed to the air intake device 50 and the exhaust device 80 by any method. For example, in this embodiment, the booth bodies 20A, 20B are fixed to the air intake device 50 and the exhaust device 80 by sandwiching the sheet member 22 between a plate provided on the air intake device 50 and a plate provided on the booth frame 21, and connecting and fixing both plates with bolts or the like.

[0060] When the first booth body 20A and the second booth body 20B are connected to form a continuous booth body 20 as shown in Figures 1 and 2, the air supply device 50 pressurizes air from one end in the first direction X to a coating space formed inside the booth body 20, and the exhaust device 80 exhausts the air in the coating space from the other end in the first direction X to the outside of the coating space.

[0061] Specifically, the air supply device 50 includes an air supply fan 51, an external filter 52, an air supply duct 53, and an air supply chamber 54.

[0062] The air supply fan 51 introduces outside air through an external filter 52, and then guides the introduced outside air through an air supply duct 53 into an air supply chamber 54.

[0063] The air supply chamber 54 is provided at the end of the first booth body 20A in the first direction X, and is a space partitioned in the first direction X from the painting space by an air supply side partition wall 55. An air supply side vent 56 is provided in the air supply side partition wall 55, which allows gas to move from the air supply chamber 54 to the painting space. The air supply side vent 56 is made of a filter that generates a pressure loss when passing through a nonwoven fabric or the like, and causes the air supplied from the air supply fan 51 to the air supply chamber 54 via the air supply duct 53 to flow out from approximately the entire surface to the painting space at a uniform flow rate.

[0064] The air supply device 50 may be provided with a heating device for heating the air blown out from the air supply fan 51, so as to heat the air to be pumped into the coating space.

[0065] The exhaust device 80 includes an exhaust chamber 81, an exhaust fan 82, and an exhaust pipe 83. The exhaust chamber 81 is provided at the end of the second booth body 20B in the first direction X, and is a space partitioned in the first direction X from the coating space by an exhaust-side partition wall 84. The exhaust-side partition wall 84 that partitions the exhaust chamber 81 is provided with an exhaust-side ventilation section 85 that allows gas to move from the coating space to the exhaust chamber 81. The exhaust-side ventilation section 85 is made of a filter that adsorbs and removes paint and the like floating in the coating space, and is provided to face the intake-side ventilation section 56 in the first direction X across the coating space.

[0066] The exhaust fan 82 draws in air from the exhaust chamber 81 and expels it to the outside through the exhaust pipe 83, so that the air in the painting space flows into the exhaust chamber 81 through the intake side ventilation section 56 and the exhaust side ventilation section 85 facing the first direction X, and is then exhausted to the outside through the exhaust pipe 83.

[0067] As a result, a push-pull ventilation passage is formed inside the booth body 20, which forcibly supplies and exhausts air from the air supply side ventilation section 56 and the air exhaust side ventilation section 85 that face each other in the first direction X, and the coating space is ventilated by a uniform air flow. The air supply device 50 and the exhaust device 80 may be controlled so that the inside of the booth body 20 is at a negative pressure lower than the outside. By creating a negative pressure inside, air, paint, etc. are less likely to leak out from the coating space inside the booth body 20 to the outside. The air supply device 50 and the exhaust device 80 may be controlled so that the inside of the booth body 20 is at a positive pressure higher than the outside. By creating a positive pressure inside, foreign matter such as dirt and dust are less likely to enter the coating space from the outside.

[0068] (6) Effects In this embodiment, air is pressurized and sent into the painting space from one end of the booth body 20 in the first direction X by the air supply device 50, and the air is forcibly exhausted to the outside of the painting space from the other end of the booth body 20 in the first direction X by the exhaust device 80. Therefore, even if the booth body 20 is large, it is easy to ensure the amount of air required to ventilate the painting space.

[0069] In this embodiment, one end of the booth body 20 in the first direction X is fixed to the air supply device 50, and the other end is fixed by the exhaust device 80, and both ends of the booth body 20 are supported by the air supply device 50 and the exhaust device 80 fixed to the installation surface G. Therefore, the structural stability of the booth body 20 is high, and it is easy to increase the size of the booth body 20.

[0070] In this embodiment, the booth body 20 is composed of a first booth body 20A fixed to the air supply device 50 and a second booth body 20B fixed to the exhaust device 80, and the booth body 20 is constructed by connecting a movable end 20A1 of the first booth body 20A and a movable end 20B1 of the second booth body 20B. Therefore, by opening the booth body 20 according to the size of the workpiece, the workpiece can be taken in and out of the center of the coating space in the first direction X, thereby improving work efficiency.

[0071] In this embodiment, the frame bodies 23 arranged at the movable ends 20A1, 20B1 of the first booth body 20A and the second booth body 20B are connected to the frame bodies 23 adjacent to each other in the first direction X by the fixed connecting parts 24a. This makes it possible to increase the rigidity of the movable ends of the first booth body 20A and the second booth body 20B, making it easy to extend and retract the first booth body 20A and the second booth body 20B. In addition, since the shape of the movable end 20A1 of the first booth body 20A and the shape of the connection / separation part 40 provided at the movable end 20B1 of the second booth body 20B are stable, the first booth body 20A can be easily inserted and removed from the insertion recess 41 provided in the connection / separation part 40.

[0072] In this embodiment, in the booth body 20, the lower side portion 22c of the sheet member 22 that constitutes the outer surface of the painting space is in contact with the installation surface G, so that the airtightness of the painting space can be improved.

[0073] In this embodiment, the connection and separation portion 40 is provided with a sealing member 42 that contacts the movable end 20A1 of the first booth body 20A inserted into the insertion recess 41, thereby making it possible to seal the gap between the movable end 20A1 of the first booth body 20A and the insertion recess 41, thereby increasing the airtightness of the painting space.

[0074] In addition, since the connection / separation part 40 is provided in a frame shape expanding in the second direction Y and upward from the movable end 20B1 of the second booth body 20B, the rigidity of the movable end 20B1 is increased and the shape of the movable end 20B1 is stable. This makes it easy to open and close the second booth body 20B, and easy to insert the movable end 20A1 of the first booth body 20A.

[0075] In this embodiment, since the connection / separation part 40 is provided at the movable end 20B1 of the second booth body 20B connected to the exhaust device 80, the movable end 20A1 of the first booth body 20A that sends out air fits inside the movable end 20B1 of the second booth body 20B that receives air. This makes it possible to prevent the air flowing through the painting space from flowing out to the outside through the connection / separation part 40.

[0076] In this embodiment, the lighting device 27 is provided on the upper frame portion 23a of the frame body 23 or on the underside of the second fixed connection portion 24a2, so that the lighting device 27 can be provided at an appropriate position in the painting space without interfering with the expansion and contraction of the first booth body 20A or the second booth body 20B.

[0077] In this embodiment, the guide rail R is provided within a groove 26 that is recessed downward from the installation surface G and is arranged so as not to protrude upward from the installation surface G. Therefore, the first booth body 20A and the second booth body 20B can be reduced in size and opened in the second direction Y to allow a vehicle transport device such as a forklift to enter the painting space, and the object to be painted can be easily transported in and out of the painting space.

[0078] In this embodiment, when the air supply device 50 is provided with a heating device, even if the painting booth 10 is installed in an environment where the temperature is not controlled, the painting space can be heated and maintained at an appropriate temperature.

[0079] In this embodiment, the inside of the painting space can be seen from the outside by providing the light-transmitting portion 22d on the sheet member 22 or by forming the sheet member 22 from a transparent material. Also, by providing the light-transmitting portion 22d on the top surface portion 22a of the sheet member 22 or by forming the sheet member 22 from a transparent material, it becomes easier to take in outside light into the painting space, and the number of lighting devices 27 installed can be reduced or the installation of the lighting device 27 can be eliminated.

[0080] 2. Second embodiment A second embodiment of the present invention will be described below with reference to the drawings. Note that the same components as those in the first embodiment are given the same reference numerals, and the description of those components will be omitted.

[0081] In the first embodiment described above, the movable end 20A1 of the first booth body 20A fixed to the air intake device 50 and the movable end 20B1 of the second booth body 20B fixed to the exhaust device 80 are connected to form a painting space between the air intake device 50 and the exhaust device 80. However, in the painting booth 100 of the second embodiment, a painting space is formed between the air intake device 50 and the exhaust device 80 by a booth body 120 fixed to either the air intake device 50 or the exhaust device 80.

[0082] 5 and 6, one end of the booth body 120 in the first direction X is connected to the air supply device 50 and fixed so as not to move in the first direction X, and the other end in the first direction X (the end on the exhaust device 80 side) serves as a movable end 120a that can slide on a guide rail R and move in the first direction X. The movable end 120a of the booth body 120 and the exhaust device 80 are connected and separated by a connecting and separating part 140.

[0083] In this embodiment, a case will be described in which one end of the booth body 120 is fixed to the air supply device 50 and the other end of the booth body 120 is provided as the movable end 120a so as to be connectable to and separable from the exhaust device 80, but one end of the booth body 120 may be fixed to the exhaust device 80 and the other end of the booth body 120 may be provided as the movable end 120a so as to be connectable to and separable from the air supply device 50. When one end of the booth body 120 is fixed to the exhaust device 80, the connection and separation part 140 may be provided at the movable end 120a of the booth body 120, or may be provided at the air supply device 50.

[0084] The booth body 120 has a basic configuration common to the first booth body 20A and the second booth body 20B described above, and comprises a booth frame 121 that forms the framework, and a bellows-shaped sheet member 122 that covers the outer periphery of the booth frame 121.

[0085] The booth frame 121 includes a plurality of frame bodies 123 arranged side by side in the first direction X, and connecting portions 124a, 124b that connect adjacent frame bodies 123 in the first direction X to each other.

[0086] The frame body 123 has a generally U-shape or U-shape and includes a frame upper portion extending in the second direction Y at a position above the installation surface G and legs 123b extending downward from both ends of the frame upper portion in the second direction Y. Rollers 125 that roll on guide rails R provided in grooves 126 are provided at the lower ends of the legs 123b.

[0087] The connecting portions 124a, 124b include a fixed connecting portion 124a that connects the frame bodies 123 while keeping the interval in the first direction X constant, and a movable connecting portion 124b that connects the frame bodies 123 in a manner that allows the interval in the first direction X to be changed. The movable connecting portion 124b includes diagonal members 124b2 that are joined in an X-shape by pins 124b1, and the diagonal members 124b2 rotate around the pins 124b1 to change the interval of the frame bodies 123 connected to the diagonal members 124b2.

[0088] In the booth body 120, the frame body 123 provided at the movable end 120a is connected to adjacent frame bodies 123 in the first direction X by fixed connecting parts 124a so as to maintain a fixed distance therebetween. In this embodiment, the fixed connecting parts 124a include a first fixed connecting part 124a1 that connects the leg parts 123b of the frame bodies 123 adjacent in the first direction X to each other, and a second fixed connecting part 124a2 that connects the frame upper parts 123a to each other. A door 128 is provided between the frame bodies 123 connected by the fixed connecting parts 124a1 and 124a2.

[0089] The sheet member 122 is made of an opaque resin material such as polyester, and covers the upper frame portions 123a and leg portions 123b of the multiple frame bodies 123 to form a coating space inside.

[0090] The side surface portion 122b of the sheet member 122 that covers the leg portion 123b of the frame body 123 is provided longer in the vertical direction than the leg portion 123b of the frame body 123, and the bottom side portion 122c of the sheet member 122 is in contact with the installation surface G over the entire first direction X.

[0091] The connection / separation part 140 is provided at either the movable end 120a of the booth body 120 or the exhaust device 80. In this embodiment, a case where the connection / separation part 140 is provided at the movable end 120a of the booth body 120 will be described, but the connection / separation part 140 may be provided at the exhaust device 80.

[0092] The connection / separation part 140 is provided in a frame shape expanding in the second direction Y and upward from the movable end 120a of the booth body 120. The connection / separation part 140 is provided with an insertion recess 141 opening in the first direction X, and a sealing member 142 provided so as to protrude inward from the peripheral edge of the insertion recess 141. The insertion recess 141 is a recess into which the exhaust chamber 81 of the exhaust device 80 can be inserted, and communicates with a coating space formed inside the booth body 120. The sealing member 142 is a plate-shaped member made of a rubber-like elastic material such as neoprene rubber.

[0093] When the booth body 120 is extended, the exhaust chamber 81 of the exhaust device 80 is inserted a predetermined length in the first direction X into the insertion recess 141 of the connection / separation part 140. As a result, the booth body 120 and the exhaust device 80 are connected to each other.

[0094] The sealing member 142 comes into contact with the outer peripheral surface of the exhaust chamber 81 of the exhaust device 80 inserted into the insertion recess 141 (i.e., the upper surface of the exhaust chamber 81 and the surface facing the second direction Y). This seals the space between the connection / separation part 140 and the exhaust chamber 81 of the exhaust device 80, improving the airtightness of the coating space formed inside the booth body 120.

[0095] In this embodiment, similarly to the above-described embodiment, air is pressurized and sent into the painting space from one end of the booth body 120 in the first direction X by the air supply device 50, and the air is forcibly exhausted to the outside of the painting space from the other end of the booth body 120 in the first direction X by the exhaust device 80. Therefore, in this embodiment as well, even if the booth body 120 is enlarged, the amount of air required for ventilation of the painting space can be easily ensured.

[0096] In this embodiment, the frame body 123 arranged at the movable end 120a of the booth body 120 is connected to the frame body 123 adjacent thereto in the first direction X by the fixed connecting portion 124a. This makes it possible to increase the rigidity of the movable end of the booth body 120, making it easy to extend and retract the booth body 120. In addition, since the shape of the movable end 120a of the booth body 120 is stable, it is easy to insert the booth body 120 into the insertion recess 141 provided in the connecting / separating portion 140.

[0097] In this embodiment, the booth body 120 is fixed to the air supply device 50, and the movable end 120a of the booth body 120 is connected to the exhaust device 80 that draws in air in the painting space, so that the airflow generated in the painting space presses the movable end 120a toward the exhaust device 80, thereby increasing the airtightness of the painting space.

[0098] In this embodiment, a connecting / separating part 140 is provided at a movable end 120a of a booth body 120 connected to an air supply device 50. When an exhaust chamber 81 of an exhaust device 80 is inserted into an insertion recess 141 of the connecting / separating part 140, a tip end of a sealing member 142 is pushed toward the air supply device 50 by the exhaust chamber 81. As a result, as shown in Fig. 5, the sealing member 142 is curved so that the inclination angle with respect to the horizontal direction increases from the tip to the base toward the exhaust device 80, so that the sealing member 142 has a high sealing property and air in the painting space is less likely to leak from the connecting / separating part 140 to the outside.

[0099] 3. Third embodiment Hereinafter, a third embodiment of the present invention will be described with reference to the drawings. Note that the same components as those in the first embodiment are given the same reference numerals, and the description of those components will be omitted.

[0100] This embodiment relates to a paint booth system in which the paint booth 10 of the first embodiment described above is installed in a building 1. Note that the paint booth system of the present invention may be configured by installing the paint booth 100 of the second embodiment in the building 1.

[0101] Specifically, a painting booth 10 similar to that of the first embodiment described above is provided inside a building 1, with the floor surface of the building 1 serving as an installation surface G. The sheet member 22 constituting the booth body 20 of this painting booth 10 has a light-transmitting portion 22d made of a transparent fabric having light-transmitting properties provided on at least a part, and preferably the entirety, of a top surface 22a.

[0102] A building lighting device 2 is provided on the ceiling surface 1a and upper part of the side surface of the building 1 at a position higher than a painting booth 10 provided inside the building 1. The building lighting device 2 illuminates the inside of the building 1 by irradiating light from a position higher than the painting booth 10 toward the floor surface of the building 1, and a portion of the light irradiated from the building lighting device 2 enters the painting space from a light-transmitting portion 22d provided on the top surface portion 22a of the booth main body 20 to illuminate the painting space.

[0103] In this embodiment, light irradiated from the building lighting device 2 of the building 1 can be taken into the painting space through the light-transmitting portion 22d provided on the top surface portion 22a, thereby reducing the number of lighting devices 27 installed in the painting space or eliminating the need to install the lighting devices 27.

[0104] The building lighting device 2 can be installed at any position above the painting booth 10, but it is preferable to arrange it so that at least a portion of the building lighting device 2 overlaps with the light-transmitting portion 22d provided on the booth body 20 in a plan view, as shown in Figure 8.

[0105] 4. Example of changes Although the embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are within the scope of the invention and its equivalents as described in the claims, as well as the scope and gist of the invention.

[0106] Any one of the multiple modified examples described below may be applied to the above embodiment, or any two or more of the modified examples described below may be combined and applied. In addition to the modified examples below, various modifications are possible. Note that the same reference numerals are used for components having the same configuration as the above embodiment, and the description of the configuration is omitted.

[0107] (1) Change Example 1 The booth main body 20, 120 may be provided with a sheet holding portion 30 that holds the lower side portions 22c, 122c of the sheet members 22, 122 in a lifted upward state.

[0108] 9A and 9B, the sheet holding parts 30 include a hook 31 provided on the lower part of the side surface parts 22b, 122b of the sheet members 22, 122, and a ring 32 provided near the lower side parts 22c, 122c of the sheet members. A plurality of the sheet holding parts 30 are provided at predetermined intervals in the first direction X.

[0109] As shown in Figure 9A, when the booth body 20, 120 connects the air supply device 50 and the exhaust device 80 and a painting space is formed inside the booth body 20, 120, the engagement between the hook 31 and the ring 32 of the sheet holding portion 30 is released, and the lower edge portions 22c, 122c of the sheet members 22, 122 are in contact with the installation surface G.

[0110] Then, before sliding the booth main body 20, 120 along the guide rail R to reduce it, the worker hooks the ring 32 provided on the lower side portion 22c, 122c of the sheet member 22, 122 onto the hook 31. As a result, as shown in Fig. 9B, the lower side portion 22c, 122c of the sheet member 22, 122 is held by the side portion 22b, 122b in a state separated upward from the installation surface G.

[0111] In this modified example, a sheet holding portion 30 is provided to hold the lower edge portions 22c, 122c of the sheet members 22, 122 above the installation surface G, so that the booth main bodies 20, 120 can slide along the guide rails R without the lower edge portions 22c of the sheet members 22 rubbing against the installation surface G.

[0112] (2) Change Example 2 A sheet holding portion 70 that lifts and holds the lower side portions 22c, 122c of the sheet members 22, 122 upward in conjunction with the contraction of the booth bodies 20, 120 may be provided on the booth bodies 20, 120.

[0113] Specifically, as shown in FIG. 10A, the sheet holding portion 70 includes a movable connecting portion 71 for the sheet that connects the frame bodies 23, 123 adjacent to each other in the first direction X so as to change the distance between the frame bodies 23, 123, and a connection portion 72 that connects the movable connecting portion 71 for the sheet to the sheet members 22, 122.

[0114] The movable seat connector 71 has both ends in the first direction X connected to the frame bodies 23, 123 whose interval in the first direction X is changeable, and has a movable part 71a bent upward in the center in the first direction X. When the interval between the adjacent frame bodies 23, 123 in the first direction X narrows as the booth bodies 20, 120 are reduced in size, the movable part 71a moves upward while being guided by a guide part (not shown).

[0115] The connection portion 72 is made of a wire-like member that connects the movable portion 71a provided on the sheet movable connecting portion 71 to the vicinity of the bottom side portions 22c, 122c of the sheet members 22, 122. When the gap between the adjacent frame bodies 23, 123 in the first direction X narrows as described above and the movable portion 71a moves upward, the connection portion 72 lifts the bottom side portions 22c, 122c of the sheet members 22, 122 upward.

[0116] In other words, when the booth main body 20, 120 is in the contracted state, the movable part 71a of the movable connecting part 71 for the sheet lifts the lower edge parts 22c, 122c of the sheet members 22, 122 upward via the connection part 72, thereby maintaining the lower edge parts 22c, 122c in a position spaced upward from the installation surface G.

[0117] Furthermore, when the booth main bodies 20, 120 are expanded from the contracted state, the movable part 71a of the sheet movable connecting part 71 moves downward. With this movement of the movable part 71a, the lower side parts 22c, 122c of the sheet members 22, 122 connected to the movable part 71a via the connecting part 72 also move downward. Then, when the booth main bodies 20, 120 connect the air supply device 50 and the exhaust device 80, the lower side parts 22c, 122c of the sheet members 22, 122 come into contact with the installation surface G.

[0118] In this modified example, when the booth main body 20, 120 shrinks, the sheet holding part 70 lifts the lower side parts 22c, 122 of the sheet members 22, 122 upward in conjunction with the contraction and holds them above the installation surface G, so that the booth main body 20, 120 can slide along the guide rail R without the lower side part 22c of the sheet member 22 rubbing against the installation surface G. Also, when the booth main body 20, 120 expands, the lower side parts 22c, 122 of the sheet members 22, 122 move downward in conjunction with the contraction and come into contact with the installation surface G. Therefore, it is not necessary for an operator to perform work to lift the lower side parts 22c, 122 of the sheet members 22, 122 or bring them into contact with the installation surface G.

[0119] (3) Change Example 3 Although an operator may move the booth main body 20, 120 along the guide rail R, the booth main body 20, 120 may be moved by a driving device. Such a driving device may be provided, for example, between the frame bodies 23 connected by the fixed connecting parts 24a, 124a.

[0120] (4) Change Example 4 In the above first embodiment, a case has been described in which the connection and separation part 40 is provided at the movable end 20B1 of the second booth body 20B connected to the exhaust device 80. However, the connection and separation part 40 may also be provided at the movable end 20A1 of the first booth body 20A connected to the air supply device 50.

[0121] In this case, when the movable end 20B1 of the second booth body 20B is inserted into the insertion recess 41 of the connection / separation part 40, the tip of the sealing member 42 is pushed toward the air supply device 50 by the movable end 20B1. As a result, the sealing member 42 is curved so that the inclination angle with respect to the horizontal direction increases toward the exhaust device 80 from the tip to the base, thereby improving the sealing performance of the sealing member 42 and making it difficult for air in the painting space to leak from the connection / separation part 40 to the outside.

[0122] (5) Change Example 5 In the above second embodiment, the case has been described where the booth body 120 is fixed to the air supply device 50, and the connection and separation part 140 is provided at the movable end 120a of the booth body 120 to connect and separate the booth body 120 to and from the exhaust device 80, but the booth body 120 may be fixed to the exhaust device 80, and the connection and separation part 140 may be provided at the movable end 120a of the booth body 120 to connect and separate the booth body 120 to and from the air supply device 50. In such a case, the booth body 120 to which the exhaust device 80 is fixed is inserted into the insertion recess 141 provided in the connection and separation part 140, and the air supply device 50 that sends out air fits inside the movable end 120a of the booth body 120 that receives air, so that it is possible to prevent the air sent out from the air supply device 50 from flowing out to the outside through the connection and separation part 40. [Explanation of symbols]

[0123] 10...painting booth, 20...booth body, 20A...first booth body, 20A1...movable end, 20B...second booth body, 20B1...movable end, 21...booth frame, 22...sheet member, 23...frame body, 24a...fixed connecting portion, 24a1...first fixed connecting portion, 24a2...second fixed connecting portion, 24b...movable connecting portion, 25...roller, 26...recessed groove, 40...connecting / separating portion, 50...air supply device placement, 51...air supply fan, 80...exhaust device, 81...exhaust chamber, 82...exhaust fan, 100...painting booth, 120...booth body, 120a...movable end, 121...booth frame, 122...sheet member, 122c...lower side portion, 123...frame body, 125...roller, 126...groove, 128...door, 140...connecting and separating portion, G...installation surface, R...guide rail, X...first direction, Y...second direction

Claims

1. A booth body provided so as to be extendable and contractible in a horizontal first direction; An air supply device provided at one end of the booth body in the first direction; an exhaust device provided at the other end of the booth body in the first direction; When the booth body is extended, a coating space for accommodating an object to be coated is formed inside the booth body, the air supply device supplies air to the coating space from one end in the first direction, and the exhaust device exhausts air from the coating space from the other end in the first direction, When the booth body is contracted, a second horizontal direction perpendicular to the first direction and an upward direction of the painting space are opened.

2. The booth body includes: a first booth body, one end of which in the first direction is fixed to the air supply device and the other end of which in the first direction constitutes a movable end that is movable in the first direction; a second booth body, one end of which in the first direction is fixed to the exhaust device and the other end of which in the first direction constitutes a movable end that is movable in the first direction; a connection / separation part that connects and separates the movable end of the first booth body and the movable end of the second booth body, When the first booth body and the second booth body are extended, the connection and separation part connects a movable end of the first booth body to a movable end of the second booth body to form the painting space inside the first booth body and the second booth body, 2. The paint booth according to claim 1, wherein when at least one of the first booth body and the second booth body is contracted, the connection / separation portion separates the first booth body and the second booth body to open the second direction and an upward direction of the paint space.

3. the booth body has one end in the first direction fixed to either one of the air supply device or the exhaust device, and the other end in the first direction serving as a movable end movable in the first direction, and the movable end is provided with a connection / separation part for connecting and separating either the air supply device or the exhaust device to and from the other, When the booth body is extended, the connection and separation part connects the movable end of the booth body to the other of the air supply device and the exhaust device to form the coating space inside the booth body; 2. The paint booth according to claim 1, wherein when the booth body is contracted, the booth body and either the air supply device or the exhaust device are separated from the other to open the second direction and an upward direction of the paint space.

4. The booth body includes a booth frame and a sheet member attached to the booth frame and forming the painting space therein, The booth frame includes a plurality of frame bodies arranged in the first direction and a connector that connects the frame bodies adjacent to each other in the first direction, the connecting body includes a movable connecting portion that connects the frame bodies to each other so as to change the interval in the first direction, and a fixed connecting portion that connects the frame bodies to each other while keeping the interval in the first direction constant, The frame body arranged on the movable end side of the first booth body is connected to the frame body adjacent to the first direction by the fixed connecting portion, The paint booth according to claim 2 , wherein the frame body arranged on the movable end side of the second booth body is connected to the frame body adjacent to the first direction by the fixed connecting portion.

5. The booth body includes a booth frame and a sheet member attached to the booth frame and forming the painting space therein, The booth frame includes a plurality of frame bodies arranged in the first direction and a connector that connects the frame bodies adjacent to each other in the first direction, the connecting body includes a movable connecting portion that connects the frame bodies to each other so as to change the interval in the first direction, and a fixed connecting portion that connects the frame bodies to each other while keeping the interval in the first direction constant, The paint booth according to claim 3 , wherein the frame body arranged on the movable end side of the booth body is connected to the frame body adjacent to the first direction by the fixed connecting portion.

6. The booth body includes a booth frame and a sheet member attached to the booth frame and forming the painting space therein, The booth frame includes a plurality of frame bodies arranged in the first direction and a connector that connects the frame bodies adjacent to each other in the first direction, the connecting body includes a movable connecting portion that connects the frame bodies to each other so as to change the interval in the first direction, and a fixed connecting portion that connects the frame bodies to each other while keeping the interval in the first direction constant, The paint booth according to claim 1 , wherein a door is provided between the frame bodies connected by the fixed connection portion.

7. The booth body includes a booth frame and a sheet member attached to the booth frame and forming the painting space therein, The paint booth according to claim 1 , wherein a lower edge portion of the sheet member contacts an installation surface on which the booth body is installed.

8. The paint booth according to claim 7 , further comprising a sheet holding portion that holds a lower side portion of the sheet member above the installation surface.

9. The booth frame includes a plurality of frame bodies arranged in the first direction, the sheet holding portion includes a sheet movable connecting portion having a movable portion that connects the frame bodies adjacent to each other in a first direction so as to be able to change the interval between the frame bodies and that moves upward when the interval between the frame bodies is reduced, and a connecting portion that connects the movable portion to the sheet member, The paint booth according to claim 8 , wherein when the gap between the frame bodies is reduced, the movable portion moves upward to move the lower edge portion of the sheet member above the installation surface.

10. the connection / separation portion is provided at a movable end of the second booth body and includes an insertion recess into which the movable end of the first booth body is inserted, and a sealing member provided so as to protrude inward from the insertion recess, The paint booth according to claim 2 , wherein the sealing member contacts an outer peripheral surface of the first booth body inserted into the insertion recess.

11. the connection / separation portion is provided at a movable end of the first booth body and includes an insertion recess into which the movable end of the second booth body is inserted, and a sealing member provided so as to protrude inward from the insertion recess, 3. The coating booth according to claim 2, wherein the tip end of the sealing member contacts the outer peripheral surface of the second booth body when the tip end is pushed toward the air supply device by the movable end of the second booth body inserted into the insertion recess.

12. The booth body has one end in the first direction connected to the exhaust device and the connection / separation part provided at the other end in the first direction, the connection and separation portion includes an insertion recess into which the air supply device is inserted, and a sealing member provided so as to protrude inward from the insertion recess, The paint booth according to claim 3 , wherein the sealing member contacts an outer circumferential surface of the air supply device inserted into the insertion recess.

13. The booth body has one end in the first direction connected to the air supply device and the connection / separation part provided at the other end in the first direction, the connection / separation portion includes an insertion recess into which the exhaust device is inserted, and a sealing member provided so as to protrude inward from the insertion recess, 4. The paint booth according to claim 3, wherein the tip end of the sealing member contacts an outer circumferential surface of the exhaust device in a state where the tip end is pushed toward the air supply device by the exhaust device inserted into the insertion recess.

14. The booth body includes a booth frame and a sheet member attached to the booth frame and forming the painting space therein, 2. The paint booth according to claim 1, wherein the booth frame comprises a plurality of frame bodies arranged in the first direction and movable in the first direction, a connector connecting the frame bodies adjacent to each other in the first direction, and a lighting device provided on at least a portion of the plurality of frame bodies.

15. The booth body includes a booth frame and a sheet member attached to the booth frame and forming the painting space therein, The booth frame includes a plurality of frame bodies arranged in the first direction, a connector that connects the frame bodies adjacent to each other in the first direction, and a guide rail that guides the plurality of frame bodies in the first direction, 2. The paint booth according to claim 1, wherein the guide rail is embedded in a mounting surface on which the booth body is mounted.

16. The paint booth of claim 1 , wherein the air supply system includes a heat source for heating the air supplied to the paint space.

17. The booth body includes a booth frame and a sheet member attached to the booth frame and forming the painting space therein, The paint booth according to claim 1 , wherein the sheet member is provided with a light-transmitting portion through which light passes in at least a portion of the portion covering the ceiling portion of the booth body.

18. A paint booth system in which the paint booth according to claim 17 is installed in a building in which a lighting device is provided, A paint booth system in which the lighting device is disposed above the booth body, and light emitted from the lighting device is taken into the interior of the booth body through the translucent portion to illuminate the paint space.

Images