JPH0972018A - Blind shielding electromagnetic shield building - Google Patents

Abstract

(57) [Abstract] [Problem] To easily perform electromagnetic shielding of a window opening. SOLUTION: In an electromagnetically shielded building in which the inside of the building is configured as an electromagnetically shielded space independent from the outside by surrounding the surroundings with an electromagnetically shielded layer made of an electromagnetically shielded material, a blind 1 using an electromagnetically shielded material is used to blind the window opening. By closing the inside,
Provides electromagnetic shielding of window openings. Further, the conductive materials 2 and 3 are arranged in the gaps formed between the blinds 1 and between the blinds 1 and the edge of the opening. A vertical blind is used as the blind 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetically shielded building by blind shielding in which a space in the building is covered with an electromagnetically shielded layer made of an electromagnetically shielded material to form an independent electromagnetically shielded space from the outside.

[0002]

2. Description of the Related Art Nowadays, in many office buildings, LANs and other communication lines are used to construct their own communication information processing systems. When such a system becomes large-scale, securing a communication line becomes a problem, and the wiring of cables becomes complicated, and when the room or the device is rearranged, the amount of work for changing the wiring becomes large. Therefore, the adoption of a wireless communication system using radio waves is also attracting attention as one method.

[0003] However, when a radio communication system using radio waves is adopted, regulations of the Radio Law regarding the frequency band to be used pose a problem. Therefore, in order to freely select and set the frequency band to use and adopt a unique wireless communication method without being restricted by the Radio Law, the space inside the building was electromagnetically shielded from the outside. Construction of an electromagnetic shielding building is indispensable. The applicant has already disclosed such an electromagnetic shielding building in, for example, Japanese Patent Publication No. 6-99972, Japanese Patent Publication No. 6-99973, Japanese Patent Publication No. 7-16118, and Japanese Patent Publication No. 6-76706. And Japanese Patent Publication Nos. 6-33971 and 6-33699, and 6-1382.
Japanese Patent Publication No. 6-63407 and Japanese Patent Publication No. 5-79790 disclose a structure for shielding a doorway of a building.
Japanese Patent Publication No. 3-55857 discloses a structure for shielding a window opening. In addition, Japanese Patent Publication No. 3-62320, Japanese Patent Publication No. 3-45772, and Japanese Patent Publication No. 3-6231.
No. 8 and Japanese Patent Publication No. 5-34159 propose a shielding structure for ceilings and layers.

As seen in these proposals, an electromagnetic shielding building uses an electromagnetic shielding material for a frame or a wall structure, and further uses an electromagnetic shielding material for windows, entrances, and other openings along the outer wall of the building. By covering the entire surface with the electromagnetic shielding material, the space in the building can be configured as one electromagnetic shielding space independent of the outside. In addition, the interior of the building is not limited to one electromagnetic shielding space, but each floor is separated by an electromagnetic shielding material on the upper and lower ceilings and floors, or by partitioning walls between rooms on each floor with an electromagnetic shielding material. Alternatively, a plurality of independent electromagnetic shielding spaces can be formed for each room.

[0005]

In the above-mentioned electromagnetic shield building, when the window opening is to be electromagnetically shielded, the electromagnetic shield layer is made of a conductive material such as metal on one or both sides of the window glass. A thin film is used.
In such a glass, the electromagnetic shielding layer is a limited material such as a conductive material, and thus the shade of the glass is also determined by the material. Therefore, there is a problem that it may be difficult to balance the color tone in terms of design in relation to the color tone of the outer wall of the building.

When an existing building is to be renewed as an electromagnetically shielded building, of course, since the body does not have electromagnetic shielding performance, the walls, floor, and ceiling are covered with metal mesh, metal foil, and conductive material. A sheet using conductive fibers, an electromagnetic shielding material such as a conductive paint is attached between the inner surface and the interior material, and the window opening can be realized by replacing the glass with an electromagnetic shielding layer. There is a problem that the attached glass has a high cost and the tint cannot be freely selected as described above.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an electromagnetically shielded building with a blind shield capable of easily electromagnetically shielding the window opening.

[0008]

To this end, the present invention is directed to an electromagnetically shielded building in which the surrounding space is covered with an electromagnetically shielded layer made of an electromagnetically shielded material so that the space inside the building is formed as an independent electromagnetically shielded space from the outside. By closing the inside of the window opening with a blind using a material, electromagnetic shielding of the window opening is performed, and in the gap generated between the blinds and between the blind and the edge of the opening. A radio wave absorber is arranged, and a vertical blind is used as the blind.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an embodiment of an electromagnetically shielded building by blind shielding of the present invention, FIG. 2 is a diagram showing a detailed cross section of a window opening shielding, 1 is a blind, 2 is a wave absorber, and 3 is conductive. Gasket, 4 wall, 5 electromagnetic shielding layer, 6 upright, 11 sash frame, 12 setting block, 13 backup material, 14 sealing material, 15 blind box, 16 blind hanger, 17 Shows the connecting bellows.

In FIG. 1, a wall 4 is, for example, a metal mesh, a metal foil (film), a non-woven fabric, or a sheet using a conductive fiber attached to the inner wall of an existing frame having no electromagnetic shielding performance, or a conductive material. An electromagnetic shielding layer is provided by applying paint. On the other hand, the window opening is provided with a blind 1 using an electromagnetic shield inside the window opening. As such a blind 1, a conductive material is used for the blade or a conductive paint is applied. It was done,
Steel is used for the lifting cord to electrically connect the blades so that they overlap. In addition, when the blades are connected with a transparent film using an electromagnetic shielding material (see, for example, Japanese Patent Publication No. 4-21798), it is not necessary to overlap the blades, so that the blades are opened for lighting. The shielding level can also be maintained. If the polarization plane of the radio wave used is either vertical or horizontal, the blade is either a vertical blade or a horizontal blade corresponding to the polarization plane, and it is limited to a gap within the pitch allowed by the wavelength. If it is one, the shielding level can be secured. The electromagnetic wave absorbers 2 are arranged on both sides of the blind 1 and between them when they are arranged side by side, and the conductive gasket 3 is
It is arranged between the lower end of the blind 1 and the waist wall to prevent radio waves from leaking from the gap between the left and right ends of the blind and the lower end. Since the upper end portion is normally stored in a blind box made of metal, there is no need for the electromagnetic wave absorbing material 2 or the conductive gasket 3, but depending on the shape and mounting relationship of the blind box. Needless to say, they may be appropriately arranged.

FIG. 2 is a vertical sectional view showing an example in which a horizontal blind is arranged. In FIG. 2, the window opening is formed by fitting a window glass 10 having a two-layer structure into a sash frame 11 mounted and fixed to the wall 4 by using a setting block 12, a backup material 13, and a sealing material 14. The blind 1 is suspended by mounting a blind suspending tool 16 in a blind box 15 inside the window opening. For example, by using steel for the lifting cord of the blind itself, the blades are electrically connected to each other. Has been done. Then, the conductive gasket 3 is arranged with its lower end portion and the waist wall facing upward, and the electromagnetic shielding layer 5 is provided inside the wall.
Are arranged, and are electrically connected integrally from the blind box 15 to the electromagnetic shielding layer 5. Connection bellows 19
Uses a conductive material and electrically connects the blind box 16 to, for example, a deck plate (made of metal) of a slab. Further, as shown in FIG. 2B, when a gap is created at the horizontal joint of the blind 1 in the upright 6 portion of the window opening, the electromagnetic wave absorber 2 is formed in this portion.
Is arranged. Thus, without using the electromagnetic shielding glass for the window glass 10, it is possible to realize the electromagnetic shielding structure of the window opening using the blind 1 inside thereof. Of course, when a heat-insulating double-layer glass or a heat ray reflective film glass is used as the window glass, since it is coated with a metal film and has a certain shielding level, it has the effect of increasing the shielding level as the window opening, It goes without saying that the effect is further enhanced by using the shielding glass.

The present invention is not limited to the above embodiment, but various modifications can be made. For example, in the above-mentioned embodiment, the case where the building is renewed as an electromagnetically shielded building that does not have electromagnetic shielding performance has been described, but even a new building that uses an electromagnetic shielding material as a shielding structure for the entire body Needless to say, the window opening may be similarly configured. Further, depending on the frequency band used and the purpose of use, a shielding level of 40 dB or higher may be required, but in some cases, for example, in the case of PHS or wireless LAN, a shielding level of 10 dB or higher is sufficient. In the latter case as described above, the shielding level does not have to be particularly high. Therefore, if the gap is equal to or less than a certain gap, it is not necessary to dispose an electromagnetic shielding material or an electromagnetic wave absorbing material, and a certain shielding level is provided. You may comprise so that electromagnetic shielding performance may be mutually interpolated by using together with window glass. Moreover, PHS and wireless LAN
Then, since the polarization plane of the used radio wave is vertical, only a vertical blind made of a conductive material, such as a non-woven blind, may be arranged. Of course, when using a radio wave whose polarization plane is horizontal, the above vertical may be changed to horizontal. Further, it goes without saying that a roll type or a pleated type blind may be used.

[0013]

As is apparent from the above description, according to the present invention, a blind is disposed inside the window opening so that a predetermined shielding level can be secured, so that it has been conventionally used for window glass. Insulating multi-layer glass and heat ray reflective film glass that are used can be used. Therefore, even when trying to renew an existing building as an electromagnetically shielded building, the construction cost of the window opening can be reduced, and
The combination of window panes and blinds facilitates achieving the required shielding levels. Moreover, since the window glass can be selected in a wide range by combining it with the blind, the window glass can be selected according to the color design of the outer wall, and the window glass can be flexibly dealt with.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of an electromagnetically shielded building with blind shielding according to the present invention.

FIG. 2 is a view showing a detailed cross section of a window opening shield.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Blind, 2 ... Electromagnetic wave absorbing material, 3 ... Conductive gasket, 4 ... Wall, 5 ... Electromagnetic shielding layer, 6 ... Cubic, 11 ... Sash frame, 12 ... Setting block, 13 ... Backup material, 14 ... Sealing material , 15 ... blind box,
16 ... Blind hanger, 17 ... Connection bellows

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Sumio Mukai 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Co., Ltd. (72) Inventor Hitoshi Sakurai 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction company (72) Inventor Koji Nagata 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction company

Claims (3)

[Claims] 1. In an electromagnetically shielded building in which the surroundings are covered with an electromagnetically shielded layer made of an electromagnetically shielded material to form an internal space of the building as an electromagnetically shielded space independent from the outside, a window using a blind using the electromagnetically shielded material An electromagnetically shielded building with blind shielding, in which the window opening is electromagnetically shielded by closing the inside. 2. The electromagnetic shielding building with blind shielding according to claim 1, wherein a conductive material is arranged in the gaps formed between the blinds and between the blinds and the edge of the opening. 3. The electromagnetically shielded building with blind shielding according to claim 1, wherein a vertical blind is used as the blind.