JPH10322083A - High performance electromagnetic shielding glass - Google Patents

Abstract

(57) [Problem] To provide sufficient electromagnetic shielding performance and light transmittance in a wide frequency band. SOLUTION: A conductive film 4 and a conductive mesh 3 are overlapped and sandwiched between intermediate layers of laminated glasses 1 and 2,
The conductive film 4 and the conductive mesh 3 are made of glass 1, 2
And is connected to the window frame at the protruding portion 8. Protruding part 8 of conductive film and conductive mesh
Is made longer on the indoor side than on the outdoor side and folded back to the indoor side, and is fixed to the glass surface by the conductive tape 9. The conductive film 4 is placed outside the room, and the conductive mesh 3 is placed inside the room. The conductive film 4 is formed by sputtering a conductive metal film on one side of the film, and the protruding portion 8 is folded back to the side opposite to the conductive surface. Intermediate films 5 to 7 made of an adhesive are provided between the glasses 1 and 2, the conductive film 4 and the conductive mesh 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-performance electromagnetic shielding glass for ensuring electromagnetic shielding performance in a wide frequency band.

[0002]

2. Description of the Related Art In order to form an independent space in which electromagnetic waves are shielded from the outside, a shielding surface is formed by using a material having electromagnetic shielding performance. It is necessary to cover the periphery of the space with a shielding surface. Generally, the shielding surface is made of a film, mesh, fiber, or the like using a conductive material, and when there is a window glass,
Electromagnetic shielding glass is used. As the conventional electromagnetic shielding glass, either glass whose surface is subjected to metal sputtering or glass having a conductive mesh interposed is mainly used.

[0003] Among these, the former metal-sputtered glass is excellent in high-frequency characteristics, but in order to cover low frequencies and achieve high performance in a wide frequency band, the thickness of the sputtering layer is increased. There is a need. But,
When the thickness of the sputtering layer is large, light transmittance is reduced, and a favorable indoor light environment cannot be secured. If a good indoor light environment is to be ensured, the sputtering layer cannot be made too thick due to the transmittance, resulting in a problem that the shielding performance at low frequencies cannot be sufficiently ensured. On the other hand, the glass with the conductive mesh interposed therebetween can achieve excellent low-frequency performance by using a thicker mesh, but the shielding performance in the high-frequency region where the wavelength of radio waves approaches the mesh size can be realized. There is a problem that it cannot be secured sufficiently.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and is intended to obtain sufficient electromagnetic shielding performance and light transmittance in a wide frequency band.

[0005] For this purpose, the present invention is to provide a laminated glass intermediate layer, a conductive film and a conductive mesh are overlapped and sandwiched, and the conductive film and the conductive mesh are protruded to the end of the glass, so that the protruding portion. It is characterized in that it is configured to be connected to a window frame.

The protruding portions of the conductive film and the conductive mesh are made longer toward the indoor side than outside the room and folded back toward the indoor side, and are fixed to the glass surface with a conductive tape. A conductive mesh is placed on the indoor side on the outside, and the conductive film is formed by sputtering a conductive metal film on one side of the film. An intermediate film made of an adhesive is provided between the film and the conductive mesh.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a view showing an embodiment of a high-performance electromagnetic shielding glass according to the present invention, wherein 1 and 2 are glass, 3 is a conductive mesh, 4 is a conductive film, and 5 to 7
Denotes an intermediate film, 8 denotes a protruding portion, and 9 denotes a conductive tape.

In FIG. 1, a glass 1 is an indoor side and a glass 2 is an outdoor side to form a laminated glass. The conductive mesh 3 and the conductive film 4 are protruded from the ends of the glass 1 and 2 to form a laminated glass. It is sandwiched between the intermediate layers. The protruding portions 8 of the conductive mesh 3 and the conductive film 4 are for folding back along the glass 1 on the indoor side to the inside of the room to make connection with the window frame. 8, the conductive mesh 3 and the conductive film 4 are electrically connected to a window frame such as a sash. The intermediate film 5 is made of an adhesive such as PVB (polyvinyl butyral) for bonding the glass 1 and the conductive mesh 3 on the indoor side, and the intermediate film 6 bonds the conductive mesh 3 and the conductive film 4. The intermediate film 7 is composed of the conductive film 4 and the outdoor glass 2.
And an adhesive for bonding. In the intermediate film 5, P
Instead of VB, an ultraviolet-curing resin may be sandwiched and irradiated with ultraviolet light for bonding.

When the protruding portion of the conductive mesh 3 on the indoor side is made longer than the protruding portion of the conductive film 4 on the outdoor side, when the protruding portion is folded back to the indoor side as shown in FIG. It is electrically contacted and connected to the side conductive portion. The conductive film 4 is made of, for example, gold on a surface of polyethylene terephthalate film (PET).
It is possible to use a film (high-heat-ray reflective film) sputtered with a conductive metal such as silver, copper, their alloys, and ITO, which has a high-heat-ray reflection function. The conductive surface is electrically connected to the conductive tape 9 and the window frame side conductive portion when the portion is folded back to the indoor side.

FIG. 2 is a view showing another embodiment of the high-performance electromagnetic shielding glass according to the present invention, wherein 3 ', 3 ", 4',
4 "denotes a protruding portion. The processing of the end portion of the high-performance electromagnetic shielding glass according to the present invention is as follows: As shown in FIG. In this case, the conductive surface of the conductive film 4 may be shorter than the protruding portion 4 'of the conductive film 4. In this case, the conductive surface of the conductive film 4 may protrude from the protruding portion 4'. It is preferable that the conductive mesh 3 be provided on the indoor side so as to be electrically connected to the room 3 ', or the protruding portion 3 "of the conductive mesh 3 on the indoor side is turned back to the indoor side as shown in FIG. The protruding portion 4 ″ of the conductive film 4 may be folded back to the outside of the room. In this case, the conductive surface of the conductive film 4 is also preferably provided on the indoor side. If such a protruding portion is provided, Conductive tape as shown in Figure 1 Even if not used, when the window glass is fitted into the window frame, the window can be provided by using a conductive sealing material, a backup material, a setting block, or the like on the window frame side, or by disposing a conductive sheet around the window frame. An electrical connection with the frame may be made.

The conductive mesh 3 and the conductive film 4 are
The indoor side and the outdoor side may be opposite to the illustrated example, that is, the conductive mesh 3 may be disposed on the outdoor side, and the conductive film 4 may be disposed on the indoor side and stacked. However, when the conductive film 4 is disposed on the outdoor side as shown in FIG. 1, most of the solar radiation heat is reflected by the film.
In the case where the conductive mesh 3 is arranged on the outdoor side, the portion of the solar heat that hits the conductive mesh 3 is absorbed by the conductive mesh 3, The light is reflected by the conductive film 4 as much as it does not hit the conductive mesh 3. Therefore, if the conductive mesh 3 is arranged on the outdoor side, the absorption of solar heat increases, but if the conductive film 4 is arranged on the outdoor side, the thermal performance can be improved.

The present invention is not limited to the above embodiment, but can be variously modified. For example, in the above-described embodiment, the protruding portion 8 of the conductive mesh 3 and the conductive film 4 is fixed with the conductive tape 9 and fitted into a window frame such as a sash, but is fixed with the conductive tape 9. Instead, the protruding portion 8 may directly contact a window frame such as a sash to be electrically connected. Also, the protruding portion is made longer than the end of the glass so as to be folded back to the glass surface, but even if it extends to the position of the end of the glass and reaches the end, it is sufficient to cover the periphery with a conductive tape. Since the connection state can be realized, it may be cut at the end of the glass, or only the conductive mesh may protrude for a long time and be folded to the side with the conductive film,
The connection between the conductive surface of the conductive film and the conductive mesh may be performed. Furthermore, when the durability of the material of the conductive surface of the conductive film is not sufficient, the protruding portion may be protected by applying a conductive paste such as silver or carbon, or by covering with another metal tape. . As a material corresponding to a laminated glass provided with a conductive mesh and a conductive film in the middle, a glass with a conductive mesh may be used for one of the laminated glasses, or only the conductive film may be used instead of the conductive mesh. It may be a laminated glass of layers.

[0013]

As is apparent from the above description, according to the present invention, a conductive film and a conductive mesh are overlapped and sandwiched in an intermediate layer of a laminated glass, and the conductive film and the conductive mesh are separated from glass. It protrudes and turns back to the room side, and the connection with the window frame is made at the protruding part. Therefore, the electrical connection with the window frame is ensured by the two electromagnetic shielding layers to make the sputtering layer thin, Good high performance electromagnetic shielding glass can be realized. In addition, the conductive film has the ability to cut ultraviolet rays and reflect infrared rays, so this glass prevents fading of interior furniture, curtains, etc. from ultraviolet rays, further reduces the cooling load in summer, and heats indoor heating in winter. However, since it does not escape from the window, energy saving effect can be expected. In addition, since the conductive mesh and the conductive film are sandwiched between the laminated glass and the laminated glass, a window glass excellent in scattering prevention performance and penetration resistance can be realized. At the same time, by folding back to the indoor side, it is possible to prevent deterioration due to intrusion of water from the outdoor side.

[Brief description of the drawings]

FIG. 1 is a view showing an embodiment of a high-performance electromagnetic shielding glass according to the present invention.

FIG. 2 is a view showing another embodiment of the high-performance electromagnetic shielding glass according to the present invention.

[Explanation of symbols]

1, 2, glass, 3 conductive mesh, 4 conductive film, 5-7 interlayer, 8, 3 ', 3 ", 4', 4" ...
Extruded part, 9 ... conductive tape

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shigemasa Suematsu 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation (72) Inventor Isao Morihiro 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation Inside (72) Inventor Kazuyuki Akeyoshi 12-25 Miyamoto-cho, Shizuoka City, Shizuoka Prefecture Inside (72) Inventor Akiyoshi Kobayashi 12-25 Miyamoto-cho, Shizuoka City, Shizuoka Prefecture Murakami Kaiyodo Co., Ltd. Inside

Claims (6)

[Claims] 1. A conductive film and a conductive mesh are overlapped and sandwiched in an intermediate layer of a laminated glass, and the conductive film and the conductive mesh are protruded to an end portion of the glass, so that the protruding portion and the window frame are separated from each other. A high-performance electromagnetic shielding glass characterized by being configured to make a connection. 2. The high-performance electromagnetic shielding glass according to claim 1, wherein the protruding portions of the conductive film and the conductive mesh are made longer on the indoor side than on the outdoor side and turned back to the indoor side. 3. The high-performance electromagnetic shielding glass according to claim 2, wherein the protruding portions of the conductive film and the conductive mesh are folded back inside the room and fixed to the glass surface by a conductive tape. 4. The high-performance electromagnetic shielding glass according to claim 1, wherein the conductive film is disposed outside the room and the conductive mesh is disposed inside the room. 5. The conductive film according to claim 1, wherein the conductive film is formed by sputtering a conductive metal film on one side of the film, and the protruding portion is folded back to the side opposite to the conductive surface.
The high-performance electromagnetic shielding glass as described. 6. The high-performance electromagnetic shielding glass according to claim 1, wherein an intermediate film made of an adhesive is provided between the glass, the conductive film, and the conductive mesh.