JPH0240237B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to an electromagnetic shielding room with a see-through window.

Conventional Technology As shown in Japanese Utility Model Application Publication No. 10836/1983, a transparent synthetic resin plate containing copper lath used for the windows of clean rooms has been manufactured on one side of an expanded metal plate made of thin steel plate or It is known that synthetic resin plates having transparency on both sides are stacked and integrated.

Problems to be Solved by the Invention Since the transparent synthetic resin board containing copper lath has the same peripheral edges as the expanded metal and the synthetic resin board, when it is attached to a window, The clean room can be shielded from electromagnetic waves, and the interior of the clean room can also be seen through the window. However, no consideration is given to the connection between the transparent synthetic resin plate containing copper lath and the shielding material around the window. Therefore, leakage of electromagnetic waves occurs through the gap between the two, significantly reducing the shielding performance of the clean room.

An object of the present invention is to provide an electromagnetic shielding room with a see-through window that can completely and easily conductively connect the electromagnetic shielding plate attached to the window and the shielding material around the window, and that prevents leakage of electromagnetic waves. It is about providing.

Means for Solving the Problems The electromagnetic shielding room with a see-through window according to the present invention has the following features:
An electromagnetic wave shielding plate for see-through is bonded to a sheet-like conductive member having a mesh or a large number of holes for see-through, and at least one of both sides thereof in an area smaller than the conductive member and so that a peripheral portion of the conductive member protrudes. a transparent plate-shaped member, a laminated part of the conductive member and the transparent member is a see-through part, and a part of the conductive member protruding from the transparent member is a conductive connection part;
The conductive connection part is bent into a cross-sectional shape, and the bent part is overlapped from above on the window periphery of the wall panel, which is made of an insulating core material and an aluminum skin material that is a shielding material that covers both the front and back sides of the core material. A covering member having a cross-sectional shape is then placed over the covering member and fixed to the wall panel from above using set screws.

As the sheet-like conductive member, a metal net such as a copper net, a metal foil, a body plate, a stainless steel body plate, an aluminum plate, etc., with a large number of holes are used.

As the plate-like transparent member, a transparent glass plate or a transparent acrylic resin plate is preferable.

The shapes of the conductive member and the transparent member are similar,
It can be any shape such as a square, triangle, or circle.

An adhesive is usually used to bond the conductive member and the transparent member.

Effect According to the present invention, the electromagnetic wave shielding plate for see-through includes a sheet-like conductive member having a mesh for see-through or a large number of holes, and a sheet-like conductive member having a smaller area than the conductive member and on both sides of the conductive member so that the peripheral portion of the conductive member protrudes. It consists of a plate-like transparent member bonded to at least one side of the conductive member, and the laminated part of the conductive member and the transparent member is used as the see-through part, so it is possible to shield the window part from electromagnetic waves and prevent electromagnetic waves from passing through the window part. You can see through the shield room.

In addition, wall panels for electromagnetic shielding rooms are widely used that consist of a core material made of heat insulating material and aluminum skin material covering both the front and back sides of the core material, but the part of the conductive material protruding from the transparent material is conductive. This conductive connection is bent into a cross-sectional shape, and the bend is a wall panel made of an insulating core material and an aluminum skin material that is a shielding material that covers both the front and back sides of the core material. The electromagnetic wave shielding plate and the surrounding area of the window are overlapped from above on the peripheral edge of the window, and then a cross-sectional covering member is placed over it and fixed to the wall panel with set screws from above. There is no gap between the shield plate and the shield plate where electricity can leak.

Embodiment Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

In the illustrated electromagnetic shielding chamber 5 with a see-through window, a see-through electromagnetic shield plate 1 includes a sheet-like conductive member 2 having a see-through mesh or a large number of holes, and an area smaller than the conductive member 2 and a surrounding area of the conductive member 2. The plate-shaped transparent member 3 is bonded to both sides of the transparent member 3 so that the conductive member 2 protrudes from the transparent member 3. The conductive connection portion 4 is bent into a cross-sectional shape, and the bent portion is formed of a heat insulating core material 6a and aluminum skin materials 6b and 6c which are shield materials covering both the front and back surfaces of the core material 6a.
A covering member 8 having a cross-sectional shape is placed over the peripheral edge of a window 7 of a wall panel 6 consisting of be.

The conductive member 2 of the electromagnetic wave shielding plate 1 for see-through shown in FIGS. 3 and 4 is made of a square sheet-like copper net with sides of 35 cm and has a mesh of 16 meshes for see-through. Reference numeral 3 denotes a transparent acrylic resin plate having a square shape having an area smaller than that of the conductive member 2 and having a side of 25 cm, and which is joined to both sides of the conductive member 2 with their centers aligned so that the periphery of the conductive member 2 protrudes. The conductive connection portion 4 is a portion of the conductive member 2 protruding from the transparent member 3 with a width of 5 cm.

The electromagnetic shielding chamber 5 shown in FIG.
It is assembled using a required number of panels having the same cross-sectional structure as the wall panel 6. The conductive connection portion 4 is bent toward the indoor side.

Further, an aluminum edge cover 10 having a substantially square cross section extends from the periphery of the transparent portion 11 of the shield plate 1 to the indoor side periphery of the window portion 7 of the wall panel 6, using the engagement protrusion 8a of the covering member 8. installed.

Note that, although the conductive connection portion 4 is not present on the outdoor side peripheral edge of the window portion 7, the structure is otherwise similar to that of the indoor side peripheral side.

Effects of the Invention According to the electromagnetic shielding room with a see-through window of the present invention, not only can the window part be shielded from electromagnetic waves, and the inside of the electromagnetic shielding room can be seen through the window part, but also the conductive connection part can be It is bent into a shape, and the bent part is superimposed on the window peripheral edge of a wall panel consisting of an insulating core material and an aluminum skin material that is a shielding material that covers both the front and back sides of the core material, and then Since the cross-sectional covering member is covered and fixed to the wall panel from above with set screws, there is no electricity between the transparent electromagnetic wave shielding plate used for the window and the shielding plate around the window. Conductive connection can be made reliably and easily so that there are no gaps where leakage occurs, and high shielding performance of the electromagnetic shielding room can be guaranteed despite the presence of the window.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is an enlarged sectional view taken along the line - in FIG. FIG. 4 is a front view of the electromagnetic shielding plate, and is a sectional view taken along the line --- in FIG. 3. DESCRIPTION OF SYMBOLS 1... Electromagnetic wave shielding plate, 2... Sheet-shaped conductive member, 3... Plate-shaped transparent member, 4... Conductive connection part, 5... Electromagnetic wave shielding room with a see-through window, 6a... Aluminum skin material, 7... Window part, 11... See-through Department.

Claims (1)

[Claims] 1. Electromagnetic wave shielding plate 1 for see-through includes a sheet-like conductive member 2 having a mesh for see-through or a large number of holes, and at least one of both sides of the sheet-like conductive member 2 having an area smaller than the conductive member 2 and so that the periphery of the conductive member 2 protrudes. It consists of a plate-shaped transparent member 3 joined to one side, and the laminated part of the conductive member 2 and the transparent member 3 is the transparent part 1.
1, the protruding part of the conductive member 2 from the transparent member 3 becomes the conductive connection part 4, and the conductive connection part 4 is bent into a cross-sectional shape, and the bent part is connected to the heat insulating core material 6a and the front and back sides of this. It is superimposed from above on the peripheral edge of the window portion 7 of the wall panel 6, which is made of aluminum skin materials 6b and 6c, which are shield materials that cover both sides,
Furthermore, a cross-sectional covering member 8 is placed over the top of the covering member 8 and fixed to the wall panel 6 with set screws 9 from above, thereby providing an electromagnetic shielding room with a see-through window.