Soundproof chamber

Abstract

To provide a soundproof chamber equipped with an all-weather housing made durable while easily installed.SOLUTION: A portable type soundproof chamber 11 comprises: a housing 12 in which a space enabling a user to enter is formed; and a door 13 connected to the housing. The housing includes a side wall 14, a ceiling 15, and a floor 16. The side wall is formed using a styrene foam having a coating layer coated with a polyurea resin and provided on the surface as a main material, and has a sound absorber attached to the inner surface side. The ceiling is formed using a styrene foam having a coating layer coated with a polyurea resin and provided on the surface as a main material. The floor is formed using a styrene foam as a main material.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a soundproof room, and more particularly to a portable soundproof room (soundproof booth) that can be installed mainly outdoors or semi-outdoors. [Background technology]

[0002] Soundproof rooms that have soundproofing properties to keep the room quiet have been installed in various places such as homes and companies and used for various purposes. In recent years, in response to the growing interest in teleworking in companies, portable soundproof rooms for teleworkers have been developed and are now in operation (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-28995 A Summary of the Invention [Problem to be solved by the invention]

[0004] Recently, there has been an increasing need to install soundproof rooms outdoors or semi-outdoors. In particular, with the outdoor boom, there is a strong need for soundproof rooms that allow teleworking outdoors at campsites, etc., but one of the problems that arise here is the influence of bad weather such as wind and rain.

[0005] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a soundproof room having a durable, all-weather enclosure that is easy to install. [Means for solving the problem]

[0006] In order to achieve the above-mentioned objective, the soundproof room of the present invention is a portable soundproof room comprising a housing that forms a space into which a user can enter and a door connected to the housing, the housing consisting of side walls, a ceiling, and a floor, the side walls being formed primarily from polystyrene foam having a coating layer formed by applying a polyurethane resin to the surface, and having sound-absorbing material attached to the inner surface.

[0007] The ceiling is mainly made of polystyrene foam with a coating layer formed by applying a polyurethane resin to the surface. The floor is mainly made of polystyrene foam.

[0008] The side walls are characterized in that they comprise a front wall having an opening that is blocked by the door, a rear wall arranged parallel to the front wall, and a pair of left and right side walls connecting the front wall and the rear wall, the left and right side walls having a plurality of planar outer surfaces extending continuously in the horizontal direction, and the angle between adjacent outer surfaces is formed at an obtuse angle.

[0009] Furthermore, a eaves is provided at the front end of the ceiling, and the upper surface of the ceiling and the upper surface of the eaves are continuously inclined toward each other, and the inclination is a downward inclination that gradually slopes downward from the front side to the rear side.

[0010] In addition, the door is an outward-opening door that opens toward the outside of the room, is configured to be openable and closable around the joint with the housing, and the eaves extend to a rotation end position of the door rotated 90 degrees from the closed position in a plan view. The housing has a divided structure divided into four assembly units, a front wall, a rear wall, a floor, and a ceiling, and a door frame is attached to the front wall. Effect of the Invention

[0011] According to the soundproof room of the present invention, a covering layer made of a polyurethane resin is provided on the surface of the polystyrene foam forming the side wall of the housing, which overcomes the drawbacks of polystyrene foam, such as durability, and makes it possible to obtain a housing made of a strong, light main material with soundproofing effects. This makes it possible to incorporate the advantages of the lightness of the polystyrene foam material and the manufacturing aspect of being able to perform one-piece molding, and fully meets the needs of installing the soundproof room outdoors or semi-outdoors.

[0012] In addition, the ceiling and floor are also made mainly of polystyrene foam, just like the side walls, which makes them even lighter and easier to manufacture. In particular, the soundproofing effect of the polystyrene foam coated with polyurea resin interacts with the sound-absorbing material attached to the inside of the side walls to provide a higher level of soundproofing, making the soundproof room suitable for a wide variety of environments in which it is used. [Brief description of the drawings]

[0013] [Figure 1] 1 is a front perspective view of a soundproof room showing an embodiment of the present invention; [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] FIG. [Diagram 5] FIG. [Figure 6] FIG. [Figure 7] FIG. 7 is a cross-sectional view taken along line VII-VII of FIG. [Figure 8] FIG. 8 is a cross-sectional view taken along line VIII-VIII of FIG. [Figure 9] This is a diagram showing the same state with an anti-tip plate installed under the floor. [Figure 10] FIG. 13 is a diagram showing the adjuster in use. [Figure 11] FIG. [Figure 12] FIG. [Figure 13]This is also an assembly diagram for the ceiling. [Figure 14] This is also an assembly explanatory diagram for the eaves. [Figure 15] FIG. 11 is an assembly explanatory diagram showing the state in which the exterior of the housing is formed. [Figure 16] FIG. 4 is a schematic diagram showing a cross-sectional structure of an adhesive portion between a side wall and a ceiling. [Figure 17] FIG. 2 is a schematic diagram showing a cross-sectional structure of the adhesive portion between the side wall and the floor. [Figure 18] FIG. 13 is an assembly explanatory diagram of a housing in which components are integrated in a modified example of the soundproof room. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] 1 to 17 show an embodiment of the present invention. As shown in Figs. 1 to 10, the soundproof room 11 is formed by a housing 12 and a door 13, and has a space where a user can enter and perform work, etc., and is installed in places where various people pass through, such as plazas such as parks and campsites, large commercial facilities, roadside stations, outdoor campuses, and parking lots of apartment buildings, and is also useful for redevelopment under elevated railways and reuse of telephone booth installation sites. In addition, the soundproof room 11 can transmit and receive data to and from external devices via a network such as the Internet. For example, a user who uses the soundproof room 11 can use a video conference terminal installed in the soundproof room 11 to hold a video conference with a user who uses an external device having a video conference function.

[0015] The housing 12 is roughly composed of side walls 14, a ceiling 15, and a floor 16, and is formed into a columnar body that is roughly symmetrical in the width direction (left and right direction in FIG. 2) and has a large height dimension as a whole. An opening for a user to enter and exit is provided on the front side (FIG. 2), which is one side of the housing 12. In addition, in consideration of the constraints on the installation space of the soundproof room 11 and the roominess of the interior space, as shown in FIG. 8, the width dimension W of the housing 12 is formed larger than the depth dimension L. The door 13 provided at the opening of the housing 12 is mainly formed of a lightweight aluminum material, and is configured as an outward-opening door that can be opened and closed around a joint part with the housing 12 by operating a handle 13a. The door 13 is provided with a door glass 13b, which allows the inside of the soundproof room 11 to be viewed from the outside.

[0016] The side walls 14, ceiling 15, and floor 16 of the housing 12 are formed mainly of polystyrene foam having a thickness of, for example, 80 mm or more. Polystyrene foam is preferable in terms of dimensional stability, workability, self-extinguishing properties, etc., and has the advantage that, in particular, due to its extreme heat insulating effect, an indoor environment can be maintained at around 30 degrees even in an environment where the outside temperature is close to 100 degrees, and at the same time, a sound absorbing effect can be obtained. A coating layer formed by applying a polyurethane resin is provided on the surface (outer surface) of the polystyrene foam. Polyurea is a two-liquid aromatic polyurethane containing a low-volatile organic compound, and although the details of the construction procedure will be described later, it is applied evenly to the outer surface when the main members of the side walls 14, ceiling 15, and floor 16 are bonded together (semi-finished state of the housing 12). As a result, a layer of polyurethane resin is filled in the fine gaps on the outer surfaces and in the bonding parts of each member, which bonds the members together more firmly and effectively suppresses water penetration into those gaps. The coating layer made of polyurea resin has insulating, waterproof and soundproofing properties, is hard in a dry state, is strong, impact-resistant and abrasion-resistant, lightweight, and has the advantage of having low radio wave transmission loss, so it does not affect the use of mobile devices (such as smartphones) that users bring indoors.

[0017] 8 and other figures, the side wall 14 is made up of a front wall 17 having an opening closed by the door 13, a rear wall 18 arranged parallel to and facing the front wall 17, and a pair of left and right side walls 19, 20 connecting the front wall 17 and the rear wall 18. The front wall 17 is slightly thicker than the left and right side walls 19, 20 and the rear wall 18, and has a pair of left and right outer surfaces 17A, 17B continuing between the opening of the door 13 and the left and right side walls 19, 20. The left and right side walls 19, 20 have a plurality of planar outer surfaces 19A-19F, 20A-20F extending continuously in the horizontal direction (toward the outer periphery of the housing), and the angle between adjacent outer surfaces is formed to be an obtuse angle (for example, approximately 160 degrees). Furthermore, the side wall 14 has a plurality of planar inner surfaces 19G-19L, 20G-20L corresponding to the planar outer surfaces 19A-19F, 20A-20F. The left and right side walls 19, 20 have a divided structure consisting of a plurality of elongated (strip-shaped) members that are installed upright. In addition, the right side wall 20 is provided with an intake ventilation opening 20a and an exhaust ventilation opening 20b at a height position away from the ground of the installation location for mechanical ventilation by operating a ventilation fan (not shown). Each ventilation opening 20a, 20b is covered with a net to prevent insects from entering.

[0018] On the other hand, on each inner surface except the inner surfaces 19G, 20G on the front side, a plurality of sound absorbing materials 21, 22 (21A-21E, 22A-22E) are attached that extend continuously in the horizontal direction (toward the inner circumference of the housing) independently of each other. Non-flammable sound absorbing panels are used for the sound absorbing materials. This makes it difficult for the voice of the user inside the soundproof room 11 and the voice of the user using the external device to leak out of the soundproof room 11. Therefore, even if the soundproof room 11 is installed in a public place where an unspecified number of people pass by, the user can speak highly confidential information with peace of mind. Furthermore, a top plate (table) 24 is provided on the inner side of the right side wall 20.

[0019] The rear wall 18 has an outer surface 18A continuing between the left and right outer surfaces 19F, 20F, and an inner surface 18B continuing between the left and right inner surfaces 19L, 20L, and a sound absorbing material 23 continuing between the left and right sound absorbing materials 21E, 22E is attached to the inner surface 18B. Also, the rear wall 18 is provided with an exhaust hole 18a for an integrated air conditioner 25 installed on the floor inside the room.

[0020] Floor 16 has a shape that conforms to the inner peripheral surface of side wall 14, and its upper surface is covered with non-flammable floor tiles 26 to prevent damage caused by air conditioner 25 or a chair (not shown). A part of floor 16 protrudes forward from the lower part of door 13, and is provided with steps (steps) 16a to facilitate entering and exiting soundproof room 11. Furthermore, in the peripheral portion of floor 16, in the portion corresponding to inner surfaces 19H, 19K, 20H, 20K of side wall 14, as shown in FIG. 11, there are provided cutouts 16b that are rectangular in plan view for attaching four fixing members 27.

[0021] The fixing member 27 is made of a steel material that can provide support strength for the housing 12, and as shown in Fig. 9 and Fig. 10, the open side of the approximately U-shaped cross section faces upward, and a pair of folded-back parts 27a, 27a is provided by bending the open end (upper end) inward. Two holes are provided side by side in the longitudinal direction (left and right direction in Fig. 10) of the fixing member 27, and a shaft 28a of an adjuster 28 is screwed to a welded nut 27b in one (outer) hole, and a shaft 29a of an anchor bolt 29 fixed to a tip-over prevention plate (load distribution plate) 30 is inserted in the other (inner) hole. The tip-over prevention plate 30 is made of metal, and two of them are arranged in a pair in the width direction of the housing (left and right direction in Fig. 9) on a base (not shown), and has a length such that both ends 30a, 30a of the approximately rectangular shape in the longitudinal direction (up and down direction in Fig. 9) are located directly below the side wall 14.

[0022] Thus, when placing the soundproof room 11 on the tip-over prevention plate 30, the installer of the soundproof room 11 inserts the shaft 29a of the anchor bolt 29 into the hole of the fixing member 27, rotates the adjuster 28 to level the soundproof room 11, and then tightens the fixing nut 28b to fix the fixing member 27 onto the tip-over prevention plate 30. Then, the locking portion (e.g., hanger) 29b of the anchor bolt 29 is tightened to hold the fixing member 27 on the tip-over prevention plate 30, thereby completing the installation of the soundproof room 11 on the foundation of the installation location. After the installation of the soundproof room 11, although not shown in the figure, a removable floor cover (floor piece) is fitted into the cutout portion 16b of the floor 16, in other words, a floor cover is installed on the folded portions 27a, 27a of the fixing member 27, and the upper surface of the floor 16 is finished to be smooth.

[0023] As shown in Figs. 6 and 7, the ceiling 15 is formed to be thicker than the side wall 14, and a recess 15a is formed on the indoor side (lower side), where an integrated downward discharge type automatic fire extinguishing device 31 including a fire extinguishing agent container is provided. The side surface of the ceiling 15 corresponds to the side wall 14, and 12 outer surfaces 15A-15F, 15H-15M are provided that are continuous in the vertical direction corresponding to the outer surfaces 19A-19F, 20A-20F. In addition, a eaves 32 is provided at the front end of the ceiling 15, and the upper surface 15b of the ceiling 15 and the upper surface 32a of the eaves 32 are provided with a continuous inclination. This inclination is a downward inclination that gradually slopes downward from the front side to the rear side.

[0024] The eaves 32 is made of the same material (polystyrene foam) and coated as the main material of the ceiling 15, and has four outer surfaces 32A-32D on the tip side. As a result, as shown in Fig. 6, the ceiling 15 (outer surfaces 15B-15F, 15H-15L and rear end surface 15G) and the eaves 32 (outer surfaces 32A-32D and both side surfaces 32E, 32F) form a total of 17 outer surfaces (modified 18-sided) in plan view. Furthermore, when attention is paid to the protruding amount of the eaves 32, as shown in Fig. 8, it extends to the rotation end P where the door 13 is rotated 90 degrees from the closed position (solid line), that is, the end (P) of the rotation trajectory (imaginary line) in plan view.

[0025] A lock (not shown) is provided between the housing 12 and the door 13, and is switched between an unlocked state in which the door 13 can be opened and a locked state in which the door 13 cannot be opened under the control of a control unit (CPU) built into the housing 12. The lock is controlled so as to unlock or lock the soundproof room 11 by switching between the unlocked and locked states through a user's operation from inside the housing 12 or by switching by remote control. The key part is provided on the door frame of the opening (peripheral member of the door), and the door 13 is provided with only a hole to receive the key part, which simplifies the wiring structure.

[0026] In addition, an operation reception unit (not shown) that receives user operations is provided on the front side (front wall 17) of the housing 12. The operation reception unit is, for example, a display with a touch panel, and receives one of 30 minutes, 60 minutes, and 90 minutes as the planned use time input by the user. Furthermore, a reservation can be made by specifying the date and time in advance from an information terminal such as a smartphone. When the reserved time arrives, the user touches the operation reception unit of the soundproof room 11 that he or she has reserved, and reads the QR code (registered trademark) displayed on the screen with the information terminal. Then, when the necessary authentication based on the user identification information is completed in a management device (server) on the network, the soundproof room 11 is unlocked and the room becomes available for entry. The fee to be paid is determined according to the planned use time, and power is supplied to the electronic devices provided inside the soundproof room 11 from the completion of the payment until the planned use time has elapsed.

[0027] The electronic devices function by receiving power from a power supply unit (including a battery installed inside the housing 12) built into the housing 12, and include permanently installed video conferencing equipment (not shown), lighting installed in appropriate positions in the housing 12, surveillance cameras, speakers, ventilation fans and integrated air conditioners 25, communication equipment (routers, etc.), and computers or mobile terminals brought in by users.

[0028] When the control unit receives an instruction from a management device that has completed user authentication and is in a state in which power can be received from a battery or in a state in which an external power outlet and the power supply unit are wired, the control unit controls the power supply unit to start supplying power to various electronic devices such as the integrated air conditioner 25. That is, these devices operate under the control of the control unit from the completion of payment until the scheduled usage time has elapsed. In addition, the user can receive power as necessary using a connection port (not shown) of the electronic device provided in the room.

[0029] Below, a method for assembling and painting the housing 12 made mainly of polystyrene foam will be described with reference to the steps in Figures 11 to 15 and the cross-sectional structures of the various parts in Figures 16 and 17. Note that adhesion and coating are performed by known application means (masking means for paint) such as brushes and sprays. Also, a detailed description of the assembly and painting jigs required for positioning the components relative to each other will be omitted.

[0030] First, the floor 16 is cut out as a component from polystyrene foam material, and the fixing members 27 are fitted into the four cutouts 16b as shown in FIG. 11. The cutouts 16b and the fixing members 27 are bonded mainly to their longitudinal side surfaces with their lower ends (bottom surfaces) aligned flush with each other, and the two are bonded together using an adhesive that is non-reactive with the foam material (polystyrene foam adhesive, hereinafter simply referred to as adhesive). Next, a plywood board (e.g., 12 mm thick) 33 cut to fit the outer shape of the floor 16 is prepared, and this is bonded to the upper surface of the floor 16 with adhesive. This provides an adhesive layer 34 between the floor 16 and the plywood board 33 as shown in FIG. 17.

[0031] Next, as shown in Fig. 12, the front wall 17, left and right side walls 19, 20, and rear wall 18 are placed in sequence (clockwise in Fig. 12) on the outer surface of the floor 16 including the fixing members 27 and the plywood 33. As a result, an adhesive layer 35 is formed between the side walls 14 and the floor 16 as shown in Fig. 17. After the side walls 14 and the floor 16 are bonded together, the ceiling 15 is placed on the side walls 14 and bonded together as shown in Fig. 13. As a result, an adhesive layer 36 is formed between the side walls 14 and the ceiling 15 as shown in Fig. 16.

[0032] Here, with the side walls 14, ceiling 15, and floor 16 in a bonded state (semi-finished state of the housing 12), interior painting is performed. In this interior painting, as shown in Figures 16 and 17, a layer of Efurethan, a type of urethane resin, is provided as an inner surface coating layer, and is evenly applied to the inner surface so that the coating film forming the Efurethan layer 37 has a thickness of 1 to 3 mm, for example. After that, as shown in Figure 14, eaves 32 is bonded to the front end of ceiling 15 on the outer surface side, whereby ceiling 15 and eaves 32 form a modified 18-sided shape.

[0033] After the exterior appearance of the housing 12 is formed by attaching the eaves 32, the exterior wall is painted as shown in Fig. 15. In this exterior wall painting, as shown in Figs. 16 and 17, a layer of polyurethane is provided as an exterior coating layer, and is evenly applied to the exterior surface so that the coating film forming the polyurethane layer 38 has a thickness of, for example, 1 to 3 mm. In this case, the polyurethane resin layer is filled in the outer surfaces of the components of the side walls 14, ceiling 15, floor 16, and eaves 32, and in minute gaps in the bonding parts (including the bonding parts of the side walls 14 (end faces) and floor 16 (side faces) to the fixing members 27), which bonds the components together more firmly and enhances waterproofing through interaction with the interior painting.

[0034] Finally, as shown in Figures 16 and 17, a topcoat layer 39 is provided on the entire outer surface of the housing 12 except for the bottom surface (the outermost layer of the outer coating layer) in order to protect the polyurethane layer 38 and improve the appearance, and a coating film (for example, a white coating film) is formed by applying the topcoat to complete the painting. Then, plastic tiles (P tiles) that make up the floor tiles 26 are laid on the upper surface of the floor 16 by gluing, and interior parts such as sound absorbing materials 21, 22, 23 and a top plate 24 are applied to the interior walls, and then the door 13, which has a door frame (a peripheral member of the door) glued and fixed to the opening on the front side (front wall 17), is installed to complete the assembly (Figure 1).

[0035] Thus, according to the soundproof room 11 of the present invention, the surface of the polystyrene foam forming the side wall 14 of the housing 12 is coated with a coating layer 38 of polyurethane resin, which overcomes the drawbacks of polystyrene foam, such as durability, and provides a housing 12 made of a strong, light main material with soundproofing effects. This makes it possible to incorporate the advantages of the lightness of the polystyrene foam material and the manufacturing advantage of being able to be molded as a single piece, and fully meets the needs of installing a soundproof room outdoors or semi-outdoors.

[0036] Also, like the side walls 14, the ceiling 15 and floor 16 are also made mainly of polystyrene foam, which allows for even lighter weight and easier manufacturing. In particular, the soundproofing effect of the polystyrene foam coated with polyurea resin interacts with the sound-absorbing materials 21, 22, and 23 attached to the inner surface of the side walls 14 to provide a higher level of soundproofing, making the soundproof room 11 suitable for a wide variety of environments in which it may be used.

[0037] Furthermore, the left and right side walls 19, 20 that constitute the side walls 14 of the housing 12 have multiple planar outer surfaces 19A-19F, 20A-20F that extend continuously in the horizontal direction, and the angles between adjacent outer surfaces are formed at obtuse angles, so that the overall outer surface shape (outer peripheral surface shape) can be made to approximate a cylindrical shape, thereby simultaneously achieving functionality that is resistant to the effects of wind and a good aesthetic appearance.

[0038] In addition, on the upper surface 15b of the ceiling 15 and the upper surface 32a of the eaves 32, continuous slopes are provided. Since the slope is a downward slope that gradually slopes downward from the front side to the rear side, rainwater can be effectively guided to the rear side opposite to the entrance / exit (door 13). Moreover, since the reverberation of rain sound can be reduced, it is possible to use it comfortably during rainfall. In particular, since the eaves 32 extend to the position of the rotation end P where the door 13 is rotated 90 degrees from the closed position in plan view, the mental burden on the user during entry and exit during rainfall is reduced, and a more comfortable use feeling can be obtained.

[0039] In addition, the steel fixing member 27 is provided with an adjuster 28 and an anchor bolt 29, and a notch 16b for fitting and adhering the fixing member 27 is provided at the peripheral edge of the floor 16. Therefore, a configuration of the floor 16 portion with excellent handleability having both the softness of styrofoam and the rigidity of steel is obtained, and the installation work of the soundproof room 11 using the fall prevention plate 30 can be efficiently advanced to various places. In particular, due to the ingenious arrangement of the fall prevention plate 30, the fall fulcrums (both ends 30a, 30a) can be easily expanded in the depth direction of the housing. In the portable soundproof room 11 where the depth dimension L and the width dimension W are different (in the relationship of L < W), it contributes to improving the front-rear stability in the depth direction of the housing.

[0040] FIG. 18 shows a modified example of the soundproof room of the present invention. In the following description, the same components as those shown in the above embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

[0041] In this modified example, the housing has a characteristic configuration after assembly completion, and has a divided structure in which the housing 40 is divided into four functional assembly units (module units) of a front wall 41, a rear wall 42, a floor 43, and a ceiling 44. The front wall 41 is formed by interposing a door 13 between a left front wall 41a and a right front wall 41b, and bonding the left and right front walls 41a, 41b to a door frame (peripheral member of the door) to integrate them. The rear wall 42 has a left rear wall 42a, a right rear wall 42b, and an intermediate rear wall 42c, and each part is formed by integral molding in pairs with each part of the front wall 41. The floor 43 has a floor main body 43a and a plurality of floor side walls 43b surrounding it and continuing in the housing outer periphery direction (horizontal direction), and as a whole forms a roughly mortar shape with a shallow recess, and each part is formed by integral molding. The fixing members 27 are fitted and adhered to the floor body 43a, and the plywood 33 is adhered to the upper surface. These attached members are components of the floor 43. The ceiling 44 is provided with an eaves 44b at the front end of the ceiling body 44a, and each part is formed by integral molding.

[0042] And, in this modified example configured in this manner, the same effects can be achieved as in the case of the soundproof room 11 to which the above-mentioned configuration of the housing 12 is applied, and further, in the case of this modified example, by integrating (modularizing) multiple components, the number of various parts that make up the assembly unit and the amount of assembly work are reduced, and the positioning and bonding of the components is simplified, improving work efficiency, and a cost reduction effect can also be expected.

[0043] The present invention is not limited to the above-mentioned embodiment, and the ceiling and floor may be made of other materials such as metal, instead of polystyrene foam as the main material. In addition, various types of paint lamination patterns for interior and exterior wall painting are assumed from the viewpoints of functionality, economy, etc. Furthermore, the housing is not limited to a cylindrical shape with different depths and widths as in the embodiment, but may be a simple rectangular parallelepiped shape, and may be formed with a space that can accommodate not only one person but also two or more people, as long as the advantages of the mobile portable soundproof room are not lost. In addition, the embodiment is premised on the use of the soundproof room being installed outdoors or semi-outdoors, but it may be installed indoors where it is not exposed to wind and rain, in which case the ceiling eaves can be removed.

[0044] In addition, the configuration of the adjuster, anchor bolt, and anti-tip plate attached to the fixing member under the floor can be appropriately changed according to the specifications of the soundproof room. In particular, when the fixing member is provided with a pair of casters and adjusters as a specification change for indoor use, the light weight of the housing can be combined to further expand the range of application as a portable soundproof room. Furthermore, the power supply can be controlled so that solar panels are installed on the ceiling and the generated electricity is supplied to electronic devices. In this case, a rotation mechanism is provided on the ceiling, and the soundproof room can be rotated to an angle that is easy to receive sunlight when installed. In addition, the installed battery can be utilized in the event of a disaster. For example, in the event of flooding, the bolt fastening to the base of the fixing member under the floor can be released, and the housing can be floated on the water. This makes the soundproof room a shelter that floats on the water. [Explanation of symbols]

[0045] 11...soundproof room, 12...casing, 13...door, 13a...handle, 13b...door glass, 14...side wall, 15...ceiling, 15a...recess, 15b...top surface, 15A to 15M...outer surface, 16...floor, 16a...step, 16b...notch, 17...front wall, 17A, 17B...outer surface, 18...rear wall, 18a...exhaust hole, 18A...outer surface, 18B...inner surface, 19 ...Left side wall, 19A to 19F...outer surface, 19G to 19L...inner surface, 20...right side wall, 20a...intake ventilation port, 25b...exhaust ventilation port, 20A to 20F...outer surface, 20G to 20L...inner surface, 21, 22 (21A to 22E, 22A to 22E)...sound absorbing material, 23...sound absorbing material, 24...top plate, 25...integrated air conditioner, 26...floor tile, 27...fixing part material, 27a...folded portion, 27b...welded nut, 28...adjuster, 28a...shaft, 28b...fixing nut, 29...anchor bolt, 29a...shaft, 29b...locking portion, 30...anti-tip plate, 30a...both ends, 31...downward discharge type automatic fire extinguishing device, 32...eaves, 32a...top surface, 32A to 32D...outer surface, 33...plywood, 34, 35, 36... Adhesive layer, 37... Ephretan layer, 38... Polyurea layer, 39... Topcoat layer, 40... Housing, 41... Front wall, 41a... Left front wall, 41b... Right front wall, 42... Rear wall, 42a... Left rear wall, 42b... Right rear wall, 42c... Intermediate rear wall, 43... Floor, 43a... Floor main body, 43b... Floor side wall, 44... Ceiling, 44a... Ceiling main body, 44b... Eaves

Claims

1. A portable soundproof room having a housing that forms a space in which a user can enter and a door connected to the housing, The housing includes a side wall, a ceiling, and a floor. The soundproof room is characterized in that the side walls are formed primarily from polystyrene foam with a coating layer made of polyurethane resin applied to the surface, and sound-absorbing material is attached to the inner surface.

2. 2. The soundproof room according to claim 1, wherein the ceiling is made mainly of polystyrene foam having a coating layer formed by applying a polyurethane resin to the surface thereof.

3. 3. The soundproof room according to claim 2, wherein the floor is made mainly of polystyrene foam.

4. the side walls include a front wall having an opening that is closed by the door, a rear wall that is arranged parallel to the front wall, and a pair of left and right side walls that connect the front wall and the rear wall, The soundproof room according to any one of claims 1 to 3, characterized in that the left and right side walls have a plurality of planar outer surfaces extending continuously in the horizontal direction, and the angle between adjacent outer surfaces is formed at an obtuse angle.

5. A eaves is provided at the front end of the ceiling, The upper surface of the ceiling and the upper surface of the eaves are continuously inclined to each other, 5. The soundproof room according to claim 4, wherein the inclination is a downward inclination that gradually slopes downward from the front side to the rear side.

6. The door is an outward-opening door that opens toward the outside of the room and is configured to be openable and closable around a coupling portion with the housing, 6. The soundproof room according to claim 5, wherein the eaves extend to a position at a rotation end where the door is rotated 90 degrees from a closed position in a plan view.

7. The soundproof room according to any one of claims 1 to 3, characterized in that the housing has a divided structure divided into four assembly units: a front wall, a rear wall, a floor, and a ceiling, and a door frame is glued to the front wall.

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