JP2007132036A - Electromagnetic wave shielding telephone booth - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electromagnetic wave shielding telephone booth which can shield electromagnetic waves radiated from a portable telephone and noise of telephone conversation leaking to the outside. <P>SOLUTION: The electromagnetic wave shielding telephone booth is composed of a floor panel, wall panels 20, a door panel 30, and a ceiling panel. An essential part of each panel is formed of a conductive material. The telephone booth has four aluminum supports 50 formed of the conductive material, located between the wall panels 20 and the door panel 30 adjacent to each other, and each support 50 and a side end member 24 arranged at each edge of each wall panel 20 are connected together via a conductive rubber member 60 by press-fitting. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an electromagnetic shielding telephone box, and more particularly, to an electromagnetic shielding telephone box that enables use of a mobile phone.

  While mobile phones can transmit and receive anywhere within the reach of radio waves, it is convenient, but electromagnetic waves radiated from mobile phones may adversely affect precision equipment and medical equipment. There is a place where use is prohibited. For example, the use of mobile phones is prohibited in hospitals, theaters, hotel lobbies, and the like.

  As a means for preventing the emission of electromagnetic waves associated with the use of a mobile phone, a telephone box is known in which an openable / closable box formed by a wall surface having an electromagnetic shielding layer is held on a floor and supported on a floor. (For example, refer to Patent Document 1).

In addition, the mobile phone includes a box body and a door for partitioning a space for a person using the mobile phone to enter the mobile phone, and at least a side wall portion of the partition portion for partitioning the box body is configured by a soundproof wall. And the thing of the structure provided with the electromagnetic wave shielding part which prevents the electromagnetic wave emitted from a mobile telephone from leaking outside in the division part surrounding a box main body is known (for example, refer patent document 2).
JP 2002-309789 (Claims, FIG. 1) JP 2002-208884 (Claims, FIGS. 2, 3, 5 to 7)

  However, in the former technique, that is, in the technique described in Japanese Patent Laid-Open No. 2002-309789, the upper body of a person who uses the mobile phone is surrounded by the box body, and therefore, electromagnetic waves radiated from the mobile phone are transmitted to the lower side of the box body. There is a possibility that noise from a telephone call may leak to the outside.

  In the latter technique, that is, in the technology described in Japanese Patent Application Laid-Open No. 2002-208884, at least a side wall portion is constituted by a soundproof wall among the partition portions that partition the box body, and a radio wave shielding portion is provided in the partition portion surrounding the box body. Therefore, compared to the former, leakage of electromagnetic waves and noise to the outside can be reduced. However, since the box body and the entire door constituting the telephone box are not shielded against electromagnetic waves and soundproofing, this also radiates from the mobile phone. There is a possibility that noise caused by electromagnetic waves and calls will leak to the outside.

  The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an electromagnetic shielding telephone box capable of shielding leakage of electromagnetic waves radiated from a mobile phone and noise caused by a call to the outside. is there.

  In order to solve the above problems, the present invention is based on an electromagnetic shielding telephone box comprising a floor panel, a wall panel, a door panel and a ceiling panel, the main part of which is formed of a conductive material. The invention comprises a column made of four conductive materials located between the adjacent wall panel and door panel, and the column and the side end of the wall panel are connected by crimping with a conductive rubber member interposed therebetween. It is characterized by being connected.

  By comprising in this way, the adjacent part of the wall panel which has the electroconductivity which comprises a telephone box can be reliably connected in a conductive state via a conductive rubber member.

  In addition to the invention of claim 1, the invention described in claim 2 is made of a conductive material with a conductive rubber member interposed at the lower end of the door panel, and toward the inside of the telephone box. A closed inclined member having an upward inclined surface is provided, and the door panel is closed at the closed position of the floor panel, and is made of a conductive material and descends outwardly to engage with the inclined surface of the closed inclined member. It is characterized in that a door-stop member having a sloped surface is installed.

  By comprising in this way, in the state which closed the door panel, the door panel which has electroconductivity, and a floor panel can be connected with a conductive state reliably. Moreover, since the door stop member has an inclined surface with a downward slope toward the outside, there is no fear that the user will crawl.

  According to a third aspect of the present invention, in addition to the first aspect of the present invention, the support column and the side end portion of the wall panel are connected to each other by pressure fitting with a conductive rubber member interposed therebetween. A closing member made of a conductive material is provided at the lower end, and a conductive rubber door stop member that presses the closing member when the door panel is closed is installed at the closed position of the door panel in the floor panel. It is characterized by that. In this case, it is preferable that the door stop member is pressure-bonded by a pressing edge made of a conductive material fixed to the floor panel, and a hollow portion is formed on the outer side of the box of the door stop member. ).

  By comprising in this way, in the state which closed the door panel, the door panel which has electroconductivity, and a floor panel can be connected with a conductive state reliably. In this case, the door-stop member can be firmly installed on the floor panel by pressing the door-stop member with a pressing edge made of a conductive material fixed to the floor panel. By forming the hollow portion on the side, the impact when the door panel is closed can be reduced, and the door panel and the floor panel can be more reliably connected in a conductive state.

  According to a fourth aspect of the present invention, in the electromagnetic shielding telephone box according to any one of the first to third aspects, the support column has a narrow groove for fitting the wall panel, and an opening portion of the narrow groove. The wall panel has an end member made of a conductive material at a side end, and the end member has a pair of fittings that project into the narrow opening groove. A protruding claw is provided, and a locking claw that engages with the inner wall piece constituting the mounting groove is formed at the tip of the fitting protruding piece.

  By comprising in this way, while connecting a support | pillar and a wall panel can be made easy, it can connect with an electroconductive state reliably.

  According to a sixth aspect of the present invention, in the electromagnetic shielding telephone box according to any one of the first to fifth aspects, the wall panel and the door panel have a window portion made of plastic or glass. Is characterized in that an electromagnetic wave shielding film is formed. In this case, as the electromagnetic wave shielding film, for example, an electromagnetic wave shielding film adhered to a plastic or glass of a window portion, indium tin oxide (ITO), a mesh film, or the like can be formed by vapor deposition.

  By comprising in this way, shielding of the electromagnetic waves in a window part can be ensured.

  In the present invention, it is preferable that the conductive material is formed of a conductive metal such as aluminum or iron.

  In the present invention, it is preferable that the electromagnetic wave attenuation is 10 dB or more in the frequency range of 800 MHz to 2.2 GHz, and the sound insulation performance is 20 dB or more in the frequency range of 1000 to 4000 Hz.

  With this configuration, the leakage of electromagnetic waves can be attenuated to a range that does not affect the electromagnetic waves on humans, and noise caused by telephone calls can be suppressed.

  According to this invention, since it is configured as described above, the following effects can be obtained.

  (1) According to the first to third aspects of the invention, the adjacent portions of the conductive wall panel constituting the telephone box can be reliably connected in a conductive state via the conductive rubber member. Leakage of electromagnetic waves to the outside can be reliably suppressed.

  (2) According to the invention of claim 2, in addition to the above (1), the door panel having electrical conductivity and the floor panel can be reliably connected in a conductive state in a state where the door panel is further closed. , Leakage of electromagnetic waves to the outside can be reliably suppressed. In addition, since the door stop member has an inclined surface with a downward slope toward the outside, there is no fear that the user will crawl and it is safe.

  (3) According to the invention described in claim 3, in addition to the above (1), in a state where the door panel is further closed, the conductive door panel and the floor panel can be reliably connected in a conductive state. , Leakage of electromagnetic waves to the outside can be reliably suppressed. In this case, the door-stop member can be firmly installed on the floor panel by pressing the door-stop member with a pressing edge made of a conductive material fixed to the floor panel. By forming the hollow portion on the side, the impact when the door panel is closed can be reduced, and the door panel and the floor panel can be more reliably connected in a conductive state.

  (4) According to the invention described in claim 4, since the connection between the support column and the wall panel can be facilitated and can be reliably connected to the conductive state, in addition to the above (1), further assembly Work can be facilitated.

  (5) According to invention of Claim 6, in addition to said (1)-(4), shielding of the electromagnetic waves in a window part can be ensured further.

  (6) According to the invention described in claim 7, in addition to the above (1) to (5), the leakage of electromagnetic waves can be further attenuated to a range that does not affect the electromagnetic waves on humans. Noise due to can be suppressed.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the best embodiment of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a schematic perspective view showing a use state of an electromagnetic wave shielding telephone box (hereinafter referred to as a telephone box) according to the present invention. FIG. 2 is a front view (a) and a side view (b) of the telephone box. 3 is a cross-sectional view of the telephone box.

  The telephone box 1 includes a floor panel 10, three wall panels 20, a door panel 30, and a ceiling panel 40, each of which is formed of a conductive material having an electromagnetic wave shielding function. And the support column 50 made of four conductive materials positioned between the door panels 30, and the support column 50 and the side end portion of the wall panel 20 are connected to each other by crimping with a conductive rubber member 60 interposed therebetween. Become.

  In the telephone box 1 configured as described above, a cable connection connector (not shown) that can be connected to a mobile phone of a different model is installed. The cable connection connector is connected to the building 4 via the antenna connection cable 2. Are connected to an external antenna (not shown) housed in a storage box 3 installed in a window portion or the like.

  As shown in FIGS. 3 and 4, the wall panel 20 is formed of a pair of surface plates 21 made of a conductive material, for example, aluminum, and an extruded shape member made of, for example, aluminum disposed in the periphery of the surface plate 21. In addition, the lower end members 22, 23 and the side end members 24, and the foamed polyurethane core material 25 filled in the space formed by the surface plate 21 and the end members 22, 23, 24, and the electromagnetic shielding function A panel body 26 having a sound insulating function is formed.

  In addition, a window opening 27 is provided on the upper side of each wall panel 20, and the inner edge of the window opening 27 is formed of an extruded aluminum member with a conductive rubber spacer 28 interposed therebetween. A window frame 29 made of, for example, transparent glass is formed in the window frame 29 via a seal member 71 and a pressing edge 72. An electromagnetic wave shielding film 73 that forms an electromagnetic wave shielding film is attached to one side surface of the window portion 70. Note that the window portion 70 does not necessarily have to be transparent, and may be translucent, and plastic may be used instead of glass. Further, in place of the film 73, for example, indium tin oxide (ITO) or a mesh film may be formed by vapor deposition instead of the electromagnetic wave shielding film. By forming the electromagnetic wave shielding film by such vapor deposition, the electromagnetic wave shielding film can be easily and uniformly formed.

  As shown in FIGS. 4 and 4A, the support column 50 has a narrow opening groove 52 that fits the wall panel 20 in an adjacent corner portion of the base 51 having a hollow cross section, and an opening portion of the narrow opening groove 52. The mounting groove 53 of the conductive rubber member 60 is provided on the opposite surface. In this case, on the opposing surfaces of the inner and outer wall pieces 53a and 53b constituting the mounting groove 53, that is, on the inner surface of the groove, there are formed concavo-convex ridges 54 that are parallel to each other. The conductive rubber member 60 is closely fitted with no displacement. The conductive rubber member 60 only needs to be fitted in at least one of the mounting grooves 53.

  On the other hand, as shown in FIG. 4 and FIG. 4A, the side end members 24 provided on both side end portions of the wall panel 20 are narrow openings of the column 50 on the outer surface of the channel-shaped base portion 24b having bent pieces 24a at both ends. A pair of fitting protrusions 24 c that protrude into the groove 52 are provided. A locking claw 24d having a narrow taper shape is formed at the distal end of the fitting protrusion 24c toward the distal end that engages with the inner wall piece 53a constituting the mounting groove 53. In addition, a pair of leg pieces 24e project from both end portions of the inner surface of the base portion 24b. Projecting pieces 24f are provided on the opposing surfaces of the leg pieces 24e on the side of the base 24b so as to be spaced from the base 24b. The projecting pieces 24f and the inner surface of the base 24b are formed. A first reinforcing plate 24h formed of, for example, a steel plate material is inserted into the groove portion 24g. Further, a second reinforcing plate 24i formed of, for example, an aluminum plate material is fitted between the both leg pieces 24e and the surface plate 21.

  The conductive rubber member 60 and the side end member 24 may have different structures. For example, as shown in FIG. 4B, instead of the plate-like conductive rubber member 60, a mounting base 60 a having a substantially rectangular cross section fitted in the mounting groove 53 of the support column 50, and one side of the mounting base 60 a A finned conductive rubber member 60A comprising a flexible fin portion 60b protruding from the end toward the narrow opening groove 52 side may be used. The finned conductive rubber member 60 </ b> A may also be fitted into at least one of the mounting grooves 53. Thus, the use of the finned conductive rubber member 60A can reduce the material cost, improve the adhesion with the side end member 24, and further ensure the conductive state of the adjacent wall panel 20. it can.

  Further, instead of the side end member 24, a side end member 24A as shown in FIG. 4B may be used. That is, the side end member 24A is paired with a channel-like base portion 24b having bent pieces 24a at both ends and a narrow opening groove 52 of the support column 50 from the outer surface of the base portion 24b and the tips inclined in the proximity direction. The fitting projection piece 24k and a locking claw 24d that is provided at the base end portion of the fitting projection piece 24k and engages with the inner wall piece 53a of the mounting groove 53 may be used. Note that the channel-shaped base 24b of the side end member 24A is fixed by foam filling of the core material 25 constituting the wall panel 20.

  Further, the upper and lower end members 22 and 23 are formed in the same manner as the side end member 24. That is, using the same reference numerals as those of the side end member 24, as shown in FIG. 5, a pair of fitting protrusions 24c project from the outer surface of the channel-shaped base 24b having bent pieces 24a at both ends. In addition, a pair of leg pieces 24e project from both end portions of the inner surface of the base portion 24b. Between the pair of fitting protrusions 24c of the upper end member 22, an aluminum channel projecting from the lower surface of the end portion of the ceiling panel 40 formed of an aluminum plate material through a packing 41 made of conductive rubber. The shape reinforcing member 42 is fitted and fixed. Thereby, the wall panel 20 and the ceiling panel 40 are connected in a conductive state. In addition, between the pair of fitting protrusions 24c of the lower end member 23, the aluminum hollow corner member 11 protruding from the upper surface of the end portion side of the floor panel 10 formed of an aluminum plate material is fitted and fixed. ing. Thereby, the wall panel 20 and the floor panel 10 are connected in a conductive state. A reinforcing plate 24j formed of, for example, an aluminum plate 8 is fitted between the leg pieces 24e of the upper and lower end members 22 and 23 and the surface plate 21.

  As shown in FIG. 2, the door panel 30 is attached to a support column 50 connected to an end of the wall panel 20 through a hinge 31 made of a conductive material such as stainless steel. This door panel 30 is formed of a hollow extruded shape member made of aluminum, and includes a door panel frame body 36 composed of lower frame members 32 and 33, a pair of vertical frame members 34 and an intermediate partition frame member 35, For example, a transparent glass window 70 is fitted into window openings 37 and 38 formed at two positions on the upper and lower sides of the door panel frame 36 via seal members 71 (FIGS. 4 and 4). 4A). Further, an electromagnetic wave shielding film such as an electromagnetic wave shielding film 73 is attached to one side surface of the window part 70. In this case, the window part 70 does not necessarily need to be transparent, may be translucent, and plastic may be used instead of glass. Further, in place of the film 73, for example, indium tin oxide (ITO) or a mesh film may be formed by vapor deposition instead of the electromagnetic wave shielding film. The door panel 30 is housed in a fixed frame member 39 formed of a conductive material, for example, an aluminum extruded shape, connected to the opposing surface of the supporting column 50 and the lower surface on the entrance / exit side of the ceiling panel 40. Yes. In this case, as shown in FIGS. 4 and 6, the fixed frame member 39 includes an inner flange 39a extending into the telephone box 1, and a narrow groove-like fitting groove 39b provided in the inner flange 39a. The conductive rubber packing 39c is fitted and fixed to. Therefore, in a state where the door panel 30 is closed, the door panel 30, the wall panel 30, and the ceiling panel 40 are held in a conductive state.

  Further, an aluminum mounting member 80 formed in a channel shape with a narrow opening at the lower end is fixed (allocated) to the lower end of the door panel 30, and a steel plate conductive member 81 and a conductive member are installed in the mounting member 80. A closed inclined member 83 made of, for example, stainless steel, which is a conductive material, is attached in a suspended manner via the conductive rubber member 82 in a state of being pressed against the conductive rubber member 82. In this case, as shown in FIGS. 6 and 7, the closing inclined member 83 includes a horizontal piece 83a disposed in the mounting member 80, a hanging piece 83b hanging from the lower surface of the horizontal piece 83a, and the hanging piece. And an inclined piece 83c having an upwardly inclined surface from the lower end of 83b toward the inner side of the telephone box 1. The closed inclined member 83 formed in this way is attached in a state where the horizontal piece 83 a is pressed against the lower surface of the conductive rubber member 82 disposed in the attachment member 80, and the inclined piece as the door panel 30 is closed. 83c is formed so that the horizontal piece 83a can be crimped | bonded to the electroconductive rubber member 82, when it contacts and engages with the door stop member 90 provided in the floor panel 10 mentioned later.

  As shown in FIGS. 6 and 7, the door stop member 90 is formed of a conductive material such as an extruded shape made of aluminum, and is slid onto the inclined piece 83 c of the closing inclined member 83 while being in contact with the telephone box 1. It has the inclined surface 90a of the downward slope toward outward. The door contact member 90 formed in this way is fixed (installed) by a fixing means such as a screw at the entrance / exit of the telephone box 1 in the floor panel 10 formed of an aluminum plate member, that is, the lower portion of the closed door panel 30. Is done. Therefore, there is no step on the floor of the entrance / exit of the telephone box 1, so that there is no worry that the user will crawl.

  Note that a synthetic resin sheet 13 such as vinyl chloride is attached to the surface of the floor panel 10 in the telephone box 1 via a base material 12 made of a plywood (see FIGS. 5 and 6).

  The ceiling panel 40 is formed of an aluminum plate member similarly to the floor panel 10, and the channel-shaped reinforcing member 42 and the aluminum reinforcing hollow corner member 42 </ b> A are screwed at the peripheral portion and the intermediate portion on the lower surface. It is fixed by fixing means such as (see FIG. 6).

  As described above, the conductive closed inclined member 83 having the inclined piece 83c that is inclined upward toward the inner side of the telephone box 1 with the conductive rubber member 82 interposed is provided along the lower end portion of the door panel 30. By installing a conductive door stop member 90 having an inclined surface 90 a that is inclined downward toward the outside of the telephone box 1 at the closed position of the door panel 30 in the floor panel 10, the door panel 30 and the door panel 30 are closed in the closed state. The floor panel 10 can be reliably made conductive, and electromagnetic waves generated from the mobile phone used in the telephone box 1 can be reliably shielded.

  In the above embodiment, the stainless steel closing inclined member 83 is suspended in the aluminum mounting member 80 provided along the lower end of the door panel 30 via the steel plate conductive member 81 and the conductive rubber member 82. Although the case where the door stop member 90 formed of an aluminum extruded shape member is installed at the entrance / exit portion of the floor panel 10 has been described, it is not always necessary to have such a structure. For example, as shown in FIGS. 8 and 9, a closing member 85 made of a conductive material such as an aluminum plate member is provided at the lower end of the door panel 30, and the door panel 30 is closed at the closing position of the door panel 30 in the floor panel 10. In this case, a conductive rubber door contact member 90 </ b> A that is in pressure contact with the closing member 85 may be installed. In this case, the door stop member 90A is provided with a bulging portion 93 having a hollow portion 92 at one end of the mounting block portion 91, and a pressing edge 94 made of a conductive material such as an aluminum extruded shape is screwed to the floor panel 10. It is crimped by stopping.

  As described above, the closing member 85 made of an aluminum plate member is provided along the lower end of the door panel 30, and is pressed against the closing member 85 when the door panel 30 is closed at the closed position of the door panel 30 in the floor panel 10. By installing the conductive rubber door contact member 90A, the door panel 30 having electrical conductivity and the floor panel 10 can be reliably connected in a conductive state when the door panel 30 is closed. Further, the door stop member 90A can be firmly installed on the floor panel 10 by crimping the door stop member 90A with the conductive pressing edge 94 fixed to the floor panel 10, and the door stop member By forming the hollow portion 92 on the outer side of the box at 90A, the impact when the door panel 30 is closed can be reduced, and the door panel 30 and the floor panel 10 can be more reliably connected in a conductive state. .

  Next, the radio wave shielding performance and sound insulation performance of the telephone box 1 according to the present invention will be described.

  In the experiment of the radio wave shielding performance and the sound insulation performance, the materials and dimensions of the wall panel 20, door panel 30, ceiling panel 40, floor panel 10 and the like constituting the telephone box 1 described in the above embodiment are set as follows. .

・ Wall panel: Aluminum surface plate (thickness: 1 mm), polyurethane foam core (thickness: 40 mm), upper, lower and side end members (aluminum extruded profile)
・ Door panel: Aluminum frame, expected 40mm
・ Window: Aluminum window frame, glass (transparent 5 mm) electromagnetic wave shielding film pasting ・ Ceiling panel: Aluminum plate (thickness 3 mm)
・ Floor panel: Aluminum plate (thickness 3mm) {ply veneer, vinyl chloride sheet attached}
Strut: Aluminum extruded profile In the telephone box configured as described above, when the radio wave shielding performance at 360 ° around was examined using mobile phones having different frequencies, the results shown in FIG. 10 were obtained. As a result of this experiment, the average value in the 800 MHz band is 15.6 dB, the average value in the 900 MHz band is 17.6 dB, the average value in the 1000 MHz (1 GHz) band is 17.3 dB, and the average value in the 2000 MHz (2 GHz) band is The average value of the 16.0 dB, 2200 MHz (2.2 GHz) band is 17.3 dB, which has the effect of attenuating the electric field strength by 15 dB or more in any frequency band, and for people using medical devices, pacemakers, etc. It was found that there was no influence of electromagnetic waves.

Moreover, as shown in FIG. 11, speaker S {SS-02 (manufactured by Rion Co., Ltd.)} is placed at a position 0.8 m from the floor in the telephone box 1, and from the ground 1 m away from the telephone box 1. The sound level meter N {NA27 (manufactured by Lion Co., Ltd.)} is disposed at a position of 1.1 m, and the frequency is 125 Hz and 250 Hz using a signal generator {SF-05 (manufactured by Lion Co., Ltd.)} (not shown). , 500 Hz, 1000 Hz (1 KHz), 2000 Hz (2 KHz), 4000 Hz (4 KHz), and the sound insulation performance when the door is opened and the door is closed in the AP (all pass) which is the entire sound range. The results as shown in Fig. 1 were obtained.

  As a result of the above experiment, it was found that there was a soundproofing effect of 20 dB or more in the frequency range of 1000 to 4000 Hz, and noise due to conversation could be reduced.

It is a schematic perspective view which shows the use condition of the electromagnetic wave shielding telephone box which concerns on this invention. It is the schematic front view (a) and schematic side view (b) of the said telephone box. It is a schematic cross-sectional view of the telephone box. It is an expanded horizontal sectional view of the said telephone box. It is a principal part expanded sectional view of FIG. It is an expanded sectional view which shows another form of the conductive rubber member in this invention, and the side end member of a wall panel. It is sectional drawing which shows the connection state of the ceiling panel in this invention, a wall panel, and a floor panel. It is sectional drawing which shows the closed state of the door panel in this invention. It is a disassembled perspective view which shows the conductive rubber member in FIG. 6, a closing inclination member, and a door stop member. It is sectional drawing which shows the closed state of the door panel of another form in this invention. It is a disassembled perspective view which shows the closing member, door stop member, and pushing edge in FIG. It is a graph which shows the experimental result of the electromagnetic wave shielding performance of the telephone box which concerns on this invention. It is a schematic side view which shows the arrangement | positioning state of the apparatus which tests the noise performance of the telephone box which concerns on this invention.

Explanation of symbols

10 floor panel 20 wall panel 21 surface plate 24, 24A side end member 24c fitting protrusion 24d locking claw 30 door panel 40 ceiling panel 50 column 52 narrow opening groove 53 mounting groove 53a inner wall piece 60, 60A conductive rubber member 70 Window part 73 Electromagnetic wave shielding film (electromagnetic wave shielding film)
83 Closing inclined member 83c Inclined pieces 90, 90A Door-contacting member 90a Inclined surface 92 Hollow portion 94 Pushing edge

Claims (8)

An electromagnetic shielding telephone box composed of a floor panel, a wall panel, a door panel and a ceiling panel, the main part of which is formed of a conductive material,
Comprising columns of four conductive materials located between the adjacent wall panel and door panel;
An electromagnetic shielding telephone box, wherein the support column and a side end portion of the wall panel are connected to each other by pressure fitting with a conductive rubber member interposed therebetween. An electromagnetic shielding telephone box composed of a floor panel, a wall panel, a door panel and a ceiling panel, the main part of which is formed of a conductive material,
Comprising columns of four conductive materials located between the adjacent wall panel and door panel;
The support column and the side edge of the wall panel are connected by crimping with a conductive rubber member interposed therebetween,
At the lower end of the door panel, a conductive rubber member is interposed, and a closed inclined member made of a conductive material and having an inclined surface that is inclined upward toward the inner side of the telephone box,
A door stop member made of a conductive material and having an inclined surface that is inclined downward toward the outside and engaged with the inclined surface of the closing inclined member is installed at the closed position of the door panel in the floor panel. An electromagnetic shielding telephone box characterized by that. An electromagnetic shielding telephone box composed of a floor panel, a wall panel, a door panel and a ceiling panel, the main part of which is formed of a conductive material,
Comprising columns of four conductive materials located between the adjacent wall panel and door panel;
The support column and the side edge of the wall panel are connected by crimping with a conductive rubber member interposed therebetween,
A closing member made of a conductive material is provided at the lower end of the door panel,
An electromagnetic shielding telephone box, comprising: a conductive rubber door stop member that is in pressure contact with the closing member when the door panel is closed at the door panel closing position of the floor panel. In the electromagnetic shielding telephone box according to any one of claims 1 to 3,
The strut has a narrow opening groove for fitting the wall panel, and has a mounting groove for a conductive rubber member on the opposite surface of the opening of the narrow opening groove,
The wall panel has an end member made of a conductive material at a side end portion, and the end member has a pair of fitting protrusions protruding into the narrow opening groove, and the tip of the fitting protrusion An electromagnetic wave shielding telephone box, wherein a locking claw that engages with an inner wall piece constituting the mounting groove is formed. In the electromagnetic shielding telephone box according to claim 3,
The door-stop member is crimped by a pressing edge made of a conductive material fixed to the floor panel, and has a hollow portion formed on the outer side of the box of the door-stop member. Telephone box. In the electromagnetic shielding telephone box according to any one of claims 1 to 5,
The wall panel and the door panel have a window part made of plastic or glass, and an electromagnetic wave shielding film is formed on the window part. In the electromagnetic shielding telephone box according to any one of claims 1 to 5,
An electromagnetic shielding telephone box, wherein the conductive material is a conductive metal such as aluminum or iron. The electromagnetic shielding telephone box according to any one of claims 1 to 7,
An electromagnetic shielding telephone box, wherein an electromagnetic wave attenuation amount is 10 dB or more in a frequency band of 800 MHz to 2.2 GHz, and a sound insulation performance is 20 dB or more in a frequency band of 1000 to 4000 Hz.

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