JP2000208979A - Electro-magnetic shielding glass window - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce generation of dew to simplify the maintenance work by arranging a mesh-containing glass via the air layer at the internal side of a shield glass to form a pair glass and then fitting such pair glass to a sash. SOLUTION: A shielding glass 1 holds a shielding material 2 between non- shielding glasses 1a, 1b like a sandwich. Under this condition, a size of the shielding material 2 is set larger than the size of the non-shielding glasses 1a, 1b. A mesh-containing glass 3 is provided at the internal side of such shielding glass 1 to form a pair glass. In this case, the predetermined interval is reserved via the aluminum spacer 5 between the shield glass 1 and mesh-containing glass 3 to form the air layer 4. Such pair glass is attached to the sash by attaching a conductive tape 6 to the end part thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetically shielded glass window, and more particularly to an electromagnetically shielded glass window which is attached to a fire protection section of a building.

[0002]

2. Description of the Related Art In recent years, in buildings such as hotels and hospitals where the proportion of mobile work is high, cordless extension telephones are planned, and radio waves are often used for information communication in buildings. . In such a case, electromagnetic shielding is required on the building side for the purpose of not emitting electromagnetic waves to other buildings, preventing interference from other areas such as other buildings, etc. It is necessary to secure an electromagnetic wave shielding function.

Conventionally, electromagnetic shielding glass, for example, as shown in FIGS. 2 and 3, has been used for a window which is an opening of a building. A window glass 11 shown in FIG. Cloth)) is disposed in the middle as a conductive material, that is, an electromagnetic shield layer 12, and the periphery of the window glass 11 in which the electromagnetic shield layer 12 is disposed in the middle is formed of a conductive paint.
By pressing and fixing to a conductive sash 15 via a conductive rubber 14 and a conductive rubber 14 as a glass sealing material, the electromagnetic shielding layer 12 serving as an electromagnetic shielding member is reliably grounded (earthed). Increases shielding performance. The conductive paint 13 plays a role of connecting to the electromagnetic shield layer 12 and ensuring a wide connection surface with the conductive rubber 14.

[0004] A window glass 16 shown in FIG. 3 forms an electromagnetic shielding layer 17 by attaching a metal film or a conductive film having a certain thickness to one glass surface. To the conductive sash 15.

When such an electromagnetically shielded glass window is installed in a fire-prevention section specified by the Building Standards Law,
In order to satisfy the statutory standards, for example, a special fireproof shutter is separately installed outside such an electromagnetic shield glass window, or a predetermined meshed glass is additionally installed outside the electromagnetic shield glass window. I have.

[0006]

In the method of installing a fireproof shutter, it is necessary to link the fireproof shutter with, for example, a smoke detector in order to make the fireproof section effective, which increases the cost and construction work. In addition, the fireproof shutter protrudes from the wall when installed, and the appearance is not good.

In the method of adding a predetermined netted glass outside the electromagnetically shielded glass window, another netted glass is separately installed outside the electromagnetically shielded glass window already installed in the sash, and the sash shape is increased. When the dew condensation or the like occurs between the electromagnetic shield glass and the netted glass, the cleaning is not easy.

An object of the present invention is to solve the above-mentioned disadvantages of the prior art, and to provide both an electromagnetic shielding function and a fire protection function with a simple structure when a shield space in which an electromagnetic shield glass is used is designated as a fire protection zone. It is an object of the present invention to provide an electromagnetically shielded glass window which can flexibly cope with the conditions of the installation site, is less likely to cause dew condensation, is easy to maintain, and can be installed at low cost.

[0009]

In order to achieve the above object, the present invention firstly forms a pair glass by arranging a netted glass through an air layer inside a shield glass, and forming the pair glass. Secondly, attaching a conductive tape to an end of the paired glass, and electrically connecting the shield glass and the netted glass via the conductive tape; thirdly, attaching the sash to the sash. The main point is that a sealing material such as a gasket is attached to the inside of the device, and the conductive tape is connected to the sash via the sealing material.

According to the first aspect of the present invention, the electromagnetic shielding performance of the commercially available netted glass can be utilized as it is, and the meshed glass and the shield glass can be paired glass, so that the construction can be performed. It is simple, and an air layer is interposed between the netted glass and the shielded glass to provide a heat insulating effect and prevent dew condensation and the like.

According to the second aspect of the present invention, in addition to the above function, the shield glass and the netted glass are electrically connected via the conductive tape, so that the electromagnetic shielding performance of both glasses is ensured. Can function.

According to the third aspect of the present invention, in addition to the above function, the conductive tape is connected to the shielded sash via a sealing material such as a gasket. The captured electromagnetic waves can be reliably released to the ground via a sealing material such as a gasket and a sash, and the grounding is ensured.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a longitudinal sectional side view of an essential part showing an embodiment of an electromagnetic shield glass window of the present invention. The electromagnetic shield glass window of the present invention is a paired glass formed by combining a shield glass 1 and a netted glass 3 as a basic configuration. Constitute.

Various modes are conceivable for the shield glass 1. For example, two ordinary non-shield glasses 1a, 1
The shielding material (conductive material such as metal) 2 is sandwiched between the members b. The form of the shielding material 2 can be freely selected such as a net shape, a mesh shape, and a film shape. In the illustrated example, a stainless metal mesh was used.

In this case, the size of the shield material 2 is set such that the shield material 2 is sandwiched between the non-shield glasses 1a and 1b.
The non-shield glass 1a, 1b is formed to be one size larger than the size of the non-shield glass 1a, 1b so that the peripheral portion protrudes outward.

As the netted glass 3, a predetermined commercially available product having a fire protection specification of type 2 which satisfies the standard is adopted as the one to be installed in the fire protection section, and the shield glass 1 and the netted glass 3 constitute a pair glass. In this case, the shield glass 1
A spacer 5 made of aluminum is interposed between the wire and the netted glass 3 to secure a predetermined interval, thereby forming an air space 4.

In order to construct an electromagnetically shielded glass window in a fire-prevention section using such a pair of glass, a conductive tape 6 using copper foil or the like as an object having conductivity by wrapping it around the end of the pair of glass. Affix. At this time, the protruding portion 2a of the shield material 2 sandwiched by the shield glass 1 and having an end protruding from the non-shield glass 1a, 1b is folded back to the outer non-shield glass 1a side, and the non-shield It is sandwiched between the glass 1a. Thereby, the shield surfaces of the shield glass 1 and the netted glass 3 are electrically connected.

Next, a mounting groove formed inside a conductive specification sash 7 made of stainless steel or the like,
The paired glass to which the conductive tape 6 is adhered as described above is fitted through a shielding gasket 8 which is a standard sealing material. In this state, the shielding gasket 8 is directly connected to the conductive tape 6, and the shielding gasket 8,
The shield glass 1 and the netted glass 3 are electrically connected to the sash 7 via the conductive tape 6 and grounded. It should be noted that another putty type sealing material may be used instead of the shielding gasket 8 as the sealing material.

In the electromagnetically shielded glass window configured as described above, the electromagnetic waves captured by the shield glass 1 and the netted glass 3 are transmitted to the sash 7 via the conductive tape 6 and the shielding gasket 8 and are grounded. At this time, since the shield material 2 sandwiched between the shield glasses 1 has an end directly connected to the conductive tape 6, the electromagnetic shield performance is good.

[0020]

As described above, the electromagnetically shielded glass window of the present invention, when the shielded space in which the electromagnetically shielded glass is used is designated as a fire protection zone, exhibits the electromagnetically shielded performance provided by the commercially available netted glass. Use it as it is,
Because the shield glass window was formed with a pair glass composed of such a netted glass and a shield glass,
With a simple structure, it can have both an electromagnetic shielding function and a fire protection function, can flexibly cope with the conditions of the installation site, such as thickness and size, and interpose an air layer between the screened glass and the shielding glass As a result, the occurrence of dew condensation can be prevented, the maintenance is simple, and the construction can be performed at low cost.

Further, the shield glass and the netted glass are electrically connected via the conductive tape, and the conductive tape is connected to the shielded sash via the sealing material (gasket). The electromagnetic wave captured by the shield glass and the shield glass can be reliably released to the ground, and the grounding is ensured, so that the accuracy of the electromagnetic shielding performance can be improved.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view of a main part showing an embodiment of an electromagnetic shield glass window of the present invention.

FIG. 2 is a longitudinal sectional side view of a main part showing an example of a conventional electromagnetic shield glass window.

FIG. 3 is a longitudinal sectional side view of a main part showing another example of a conventional electromagnetic shield glass window.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Shield glass 1a, 1b ... Non-shield glass material 2 ... Shield material 2a ... Projection part 3 ... Netted glass 4 ... Air layer 5 ... Spacer 6 ... Conductive tape 7 ... Sash 8 ... Shield gasket 11 ... Window glass 12 … Electromagnetic shield layer 13… conductive paint 14… conductive rubber 15… sash 16… window glass 17… electromagnetic shield layer

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shinichi Tamanaga 4-51, Ota-cho, Naka-ku, Yokohama-shi, Kanagawa Prefecture Kashima Construction Co., Ltd. Yokohama Branch (72) Inventor Jota Kusama 1-1 Uchisaiwaicho, Chiyoda-ku, Tokyo -3 Within Tokyo Electric Power Company (72) Inventor Hiroshi Tsuchida 1-1 Bentendori, Naka-ku, Yokohama-shi, Kanagawa Prefecture Tokyo Electric Power Company Kanagawa Branch F-term (reference) 5E321 AA03 AA14 AA46 BB22 CC16 GG05 GH01 GH01 GH10

Claims (3)

[Claims] 1. An electromagnetically shielded glass window wherein a pair of glasses is formed by arranging a netted glass inside a shield glass via an air layer, and the paired glass is attached to a sash. 2. The electromagnetically shielded glass window according to claim 1, wherein a conductive tape is attached to an end of the paired glass, and the shield glass and the netted glass are electrically connected via the conductive tape. 3. The electromagnetically shielded glass window according to claim 1, wherein a sealing material such as a gasket is mounted inside the sash, and the conductive tape is connected to the sash via the sealing material.