JP3124420B2 - Electromagnetic wave shielding structure in the window of the shield room - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic wave shielding structure in a window of a shield room (a room having electromagnetic wave shielding performance).

[0002]

2. Description of the Related Art With regard to electronic devices using digital technology represented by computers, on the other hand,
There is a problem that an external electromagnetic wave affects the electronic device as noise, such as interference or interference.On the other hand, a digital signal containing a harmonic component generated by the electronic device is, for example,
Because there is a problem that electromagnetic waves are emitted from the interface cable connecting the computer and the printer to the indoor space as electromagnetic waves, which leak to the outside and information is intercepted outdoors.
The demand for a shield room that prevents not only the invasion and leakage of electromagnetic waves from the floor and walls of the shield room but also the windows from the windows is rapidly increasing.

[0003] In the countermeasures against electromagnetic waves in a window of a shield room, a connection structure between a conductive material provided on a window glass and a conductive material on a wall around the window becomes a problem. Japanese Patent Application Laid-Open No. 63-2810 describes the bonding of such conductive materials.
No. 0, Japanese Utility Model Application Laid-Open No. 64-24898, Japanese Utility Model Application Publication No.
No. 76898. However, JP
Both Japanese Patent Application Laid-Open No. 3-28100 and Japanese Utility Model Application Laid-Open No. 64-24898 require a large number of components for holding the window glass, and therefore, the glass plate is not easily attached and the conductive material of the window glass is difficult. It takes a lot of trouble to connect the glass material to the conductive material of the wall around the window, and Japanese Unexamined Utility Model Publication No. 2-76898 discloses a gasket and a metal frame body having a special shape and structure for holding a glass plate. , And must be fixed to the window opening in a significantly different manner from the prior art, and therefore there is a problem in terms of mounting strength.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and it is an object of the present invention to effectively prevent intrusion and leakage of electromagnetic waves in a window of a shield room. The connection between the conductive material of the window glass and the conductive material of the wall around the window can be performed by a simple operation with a structure as simple as possible and with a small number of parts. Is to be easily performed.

[0005]

In order to achieve the above-mentioned object, an electromagnetic wave shielding structure for a window according to the present invention is provided on an inner periphery of a window opening of a shield room to fit a glass plate and fix the same in a manner to fix the glass plate. The frame comprises: a pre-fixed frame fixed to the inner periphery of the window opening; and a conductive post-fixing frame fitted to the pre-fixed frame. The pre-installed frame is attached to the window opening, A glass plate provided with a conductive material having translucency is mounted therein, and the post-installed frame is fitted to the pre-installed frame, and the glass plate is fixed and simultaneously extended from the peripheral end of the glass plate. Electrically connecting the conductive material to the post-mounting frame, extending the conductive material provided on the wall forming the window opening around the window opening, and removing the extended conductive material. It is characterized by being electrically connected to the retrofit frame It is.

The retrofit frame extends from the vicinity of the peripheral edge of the glass plate to a position covering the indoor side surface of the wooden frame on which the opening frame is mounted, and the conductive material of the wall is sandwiched between the wooden frame and the retrofit frame. Thus, a form in which the sheet is electrically connected to the retrofit frame can be adopted.

[0007]

[Action] The opening frame is composed of an initial frame and a retrofit frame.
The retrofit frame can be fitted to the front frame in the same manner as the pushing edge of the fitting window frame. Therefore, the glass plate can be easily mounted. Then, the electric current converted from the electromagnetic wave by the conductive material of the glass plate flows to the ground via the conductive material of the wall via the retrofitting frame. Therefore, the electromagnetic wave traveling from the outdoor side to the window surface and the electromagnetic wave radiated from the indoor electronic device to the window surface are converted into electric current in the conductive material of the glass plate and flow to the ground.

[0008]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal sectional view of a window employing an embodiment of the first invention, and FIG. 2 is a transverse sectional view of the window. In FIGS. 1 and 2,
1 is an outer wall of a building, and a conductive material 2,
For example, a wire mesh (mesh screen) or a copper thin plate having a line interval of about 1 to 3 mm is stretched. Conductive material 2
Extends to the window opening side around the window opening 3.

A wooden frame member 4A-4D is connected to the periphery of the window opening 3, and a wooden frame 4 is formed in a rectangular frame. An opening frame (sash frame) is formed on the inner peripheral surface of the wooden frame. 5 is attached, and a glass plate 6 is mounted on the opening frame 5. The opening frame 5 includes an upper frame 5A, a lower frame 5B, and left and right vertical frames 5.
C and 5D are connected in a rectangular shape. And each frame 5
A~5D includes a tipping frame 51 which is fixed by a screw S ₁ in crates 4 before the glass plate mounting, consists retrofit frame 52 which is fixed by fitting to the tipping frame 51 after the glass plate mounting. That is, each of the frames 5A to 5D has a pressing edge structure in a normal sash, and the structure of the opening frame 5 and the method of attaching the glass plate 6 to the opening frame are the same as those of the conventional glass window.

The peripheral edge of the glass plate 6 is formed in L-shaped grooves formed in the leading frame 51 of the upper frame 5A and the lower frame 5B and facing each other, and L-shaped grooves of the left and right vertical frames 5C and 5D. After each insertion, when the retrofit frame 52 is fitted from the opposite side of the glass plate 6 of the prefit frame 51 of the upper and lower frames 5A and 5B and the left and right vertical frames 5C and 5D, the sign between the prefit frame and the retrofit frame is obtained. Through a known bead in which the glass plate 6 is omitted.
Is fixed.

The glass plate 6 has a conductive material 7 having translucency, for example, a wire mesh having a line interval of about 1 to 3 mm. The conductive material 7 extends outward from the periphery of the glass plate 6, and the extended portion 7 a is in close contact with the retrofit frame 52 when the retrofit frame 52 is fitted.
The pre-attachment frame 51 has an alumite film on the surface by anodizing an aluminum alloy shaped material similarly to a general shaped material, and further has a coated film on the surface for improving corrosion resistance. The conductivity is low. On the other hand, since the post-mounting frame 52 in the present invention does not have the alumite film and the coating film, it has high conductivity. Therefore, the fitting of the retrofit frame
The retrofit frame 52 is electrically connected to the conductive material 7.

The electrical contact state is reliably maintained by the beads 11 inserted between the glass plate 6 and the retrofit frame 52. The extended portion 2 a of the conductive material 2 of the wall 1 is also in contact with the attachment frame 52.

If the extended portion 2a of the conductive material 2 is simply brought into contact with the retrofit frame 52, there may be a portion where the electrical contact state is incomplete. Also, the extension 2a of the conductive material 2
However, if it is exposed on the indoor side surface around the window opening, it is not preferable in appearance. Further, the conductive material may be corroded by moisture contained in room air or dew water flowing down the window glass.

In view of the above, the extended portion 2a of the conductive material 2 extending to the indoor side surface of the wooden frame 4 and the opening frame 5 is covered with a decorative cover material 8. The cover member 8 is fixed by a screw S _2, etc. in both as one or preferably in the illustrated embodiment of the crate 4 and the opening frame 5, extending the cover member 8 and the conductive material 2 A heat insulator 9 is interposed between the portion 2a. As a result, dew condensation that may occur on the wall and / or glass plate surface penetrates the conductive material,
Corrosion of these at an early stage is effectively prevented. If the heat insulating material 9 is a gel material, the cover material 8
Of the conductive material to the conductive material is improved. Further, if a material having conductivity is used as the heat insulating material 9, the electrical connection between the conductive material 2 of the wall and the retrofit frame 52 can be completed. The conductive material 2 of the wall 1 is grounded to the ground 10 by an arbitrary method (not shown) through a conductive material provided on a floor material (not shown) or directly through the conductive material. I have. Thus, the external electromagnetic wave or the leaked electromagnetic wave that has reached the wall surface and the glass surface is converted into an electric current by the conductive material of the glass plate, flows to the ground 10 through the conductive material of the wall, and disappears.

In this way, the extraneous electromagnetic wave or the leaked electromagnetic wave that has reached the wall surface and the glass surface is converted into an electric current by the conductive materials 7 and 2 and flows to the ground 10.

Since the conductive material 7 of the glass plate 6 according to the present invention only needs to be brought into electrical contact with the conductive retrofit frame 52, the conductive material 7 is It is not limited to the one extended from the edge. Therefore, a glass plate, a transparent electrode coated in a matrix with an interval of about 1 to 5 mm, a structure in which a metal mesh or a transparent electrode is interposed between the front and back two glass plates,
Alternatively, a material obtained by inserting a wire net into molten glass and solidifying it, or a material formed by mixing a conductive component into a glass component and the like can be used.

FIGS. 3 and 4 are sectional views showing a second embodiment of the present invention. FIG. 3 is a longitudinal sectional view showing only the lower part of the window with the upper part omitted, and FIG. 4 is a transverse sectional view showing only the left part with the right part of the window omitted. In this embodiment, of the front attachment frame 51 constituting the opening frames 5B and 5C and the rear attachment frame 53, the rear attachment frame 53 is a position that covers the indoor side surface of the wooden frames 4B and 4C from the portion that sandwiches the periphery of the glass. Molded to stainless steel in a shape that extends to
Used as it has conductivity, then with frame 53 the tipping frame 51 and wooden frame 4B after a glass plate mounted by fixing by screws S ₂ to 4C, it is fixed to the killing shaped glazed plate 6. In this case as well, the conductive material 7 of the glass plate 6 is electrically connected to the conductive retrofitting frame 53, and the retrofitting frame 53 is further connected to the extended portion 2 a of the conductive material 2 of the wall 1.
Is electrically connected to

In this embodiment, as in the previous embodiment, after fixing the pre-attachment frame 51 to the inner periphery of the opening, the post-attachment frame 53 is stably fitted with the glass plate fitted into the pre-attachment frame. Is attached to the pre-attached frame, and at the same time, the conductive material 7 of the glass plate 6 is brought into close contact with the post-installed frame 53 having conductivity, and the intermediate portion of the post-installed frame is fixed to the pre-attached frame. Part between which the extension 2 of the conductive material 2 of the wall 1
The fixing of the glass plate and the electrical connection of each of the conductive materials 7 and 2 are completed only by interposing and fixing to the wooden frame. Further, in this embodiment, since the retrofit frame 53 also serves as the retrofit frame 52 and the cover member 8 in the above embodiment, the same operation and effect can be obtained with respect to the electromagnetic wave, and the cost can be reduced by saving the material and simplifying the construction. The effect of reduction is obtained.

In the above description, whether the conductive material of the wall exists inside or outside the room, and whether the connection between the extending portion of the conductive material of the wall and the extending portion of the conductive material of the glass plate is inside or outside the room. There is no particular restriction on whether this is done.

[0020]

As described above, according to the present invention, an opening frame having a pressing edge structure in a normal sash including a front attachment frame and a rear attachment frame is used, the front attachment frame is attached to the window opening, and the front attachment frame is provided. A glass plate is mounted inside, a post-mounting frame is fitted to the pre-fitting frame, and the glass plate is fixed, and at the same time, a conductive material extended from the peripheral end of the glass plate is electrically connected to the post-fitting frame, and the window is provided. Since the portion of the conductive material of the wall forming the opening extending around the window opening is electrically connected to the retrofit frame, the conductive material of the window glass and the conductive material of the wall around the window are connected. The connection with the conductive material can be easily performed by the simple and the pressing edge structure with the minimum number of parts, and therefore, the attachment of the window glass can be stably and easily performed as in the conventional case.

According to the second aspect of the present invention, since the retrofitting frame also serves as the cover material, it is possible to obtain an effect of cost reduction by material saving and simplification of construction.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of one embodiment of the present invention.

FIG. 2 is a cross-sectional view of the same embodiment.

FIG. 3 is a longitudinal sectional view in which a part of a second embodiment of the present invention is omitted.

FIG. 4 is a transverse sectional view in which a part of the embodiment is omitted.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wall 2 Conductive material 2a Extension part 3 Window opening 4 Wooden frame 4-4D wooden frame material 5 Opening frame 5A Upper frame 5B Lower frame 5C, 5D Vertical frame 51 Prefix frame 52, 53 Retrofit frame 6 Glass plate 7 Conductive Material 7a Extension 8 Cover material 10 Earth

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) H05K 9/00

Claims (2)

(57) [Claims] 1. An opening frame attached to an inner periphery of a window opening of a shield room and fitted to fix a glass plate in a killing manner, and a leading frame fixed to an inner periphery of the window opening, and a leading frame fixed to the leading frame. And a retrofit frame having conductivity to be fitted,
The pre-attached frame is attached to the window opening, a glass plate provided with a light-transmitting conductive material is mounted in the pre-attached frame, and the post-installed frame is fitted to the pre-attached frame to fix the glass plate. At the same time, the conductive material extended from the peripheral edge of the glass plate is electrically connected to the retrofit frame, and the conductive material provided on the wall forming the window opening is moved around the window opening. And an electrically conductive material that is extended to the retrofit frame, wherein the shielded window has an electromagnetic wave shielding structure. 2. The retrofit frame extends from the vicinity of the peripheral edge of the glass plate to a position covering the indoor side surface of the wooden frame for mounting the opening frame,
The shielded room window according to claim 1, wherein the conductive material of the wall is sandwiched between the wooden frame and the retrofit frame and is electrically connected to the retrofit frame. Electromagnetic wave blocking structure.