JPH05175680A - Electromagnetic-wave shielding window - Google Patents

Abstract

PURPOSE:To hold the shielding performance of an electromagnetic-wave shielding- material unit body and to obtain the durability, of the title window, which is equal to that of an ordinary window by a method wherein a conductive backup material composed of an electrically good conductor is arranged between an electromagnetic- wave shielding material and a window frame and the electromagnetic-wave shielding performance of the title window is held by using a conductive pressure edge or the like composed of an electrically good conductor. CONSTITUTION:A conductive backup material 5 is arranged between a conductive face of an electromagnetic-wave shielding material 1 and a conductive pressure edge 6. They are connected electrically. Thereby, the conductive backup material 5, the conductive pressure edge 6 and a window frame 8 from the conductive face of the electromagnetic-wave shielding material 1 are united electrically, and the electromagnetic shielding performance of the title window can be enhanced. At the conductive pressure edge 6, at least the surface is conductive; it is formed of, e.g. stainless steel, or a film whose conductivity is high is formed on the surface of aluminum or the like. It is preferable that a conductive material 3 and a conductive cover material are connected to a shielding part on the circumference over the whole of a window peripheral part.

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 window.

[0002]

2. Description of the Related Art In a modern office building, an intelligent building, information communication equipment such as a complex electronic exchange and a computer is shared to perform information communication with the inside and outside of the building. With the diversification and individualization of information needs, one of the major challenges in large-scale buildings is to provide information more quickly and accurately. As an answer to such a problem in an intelligent building, an information network based on a data highway method using an optical fiber cable or a coaxial cable has been studied and proposed.

However, in the data highway system using the optical fiber cable and the coaxial cable, the optical fiber and the coaxial cable must be stretched all over the interior of the intelligent building, and the construction cost and construction period are extra due to the cable laying. This will be the case.

Further, if radio waves are used for information communication in a building, it is not necessary to lay a cable, but in this case, on the other hand, noise radio waves are emitted to the outside, so at a frequency within a certain range, according to the Radio Law. Will be subject to regulations. On the other hand, there arises a problem that the system malfunctions due to an electric wave from the outside, an internal TV intermediate frequency, an electric wave of a wireless microphone, or the like.

Wireless communication, which is expected to grow in demand in the future, does not emit electromagnetic noise in order to prevent mutual interference in a building, and on the contrary, does not emit electromagnetic waves because it does not affect other buildings. Is required. In addition, a technology that does not emit radio waves and cannot enter even a computer center, hospital, or AV conference room that handles precision electronic devices is required. In particular, recently, it has been found that electromagnetic noise emitted from a computer or a display can be easily caught by a relatively simple device, so that eavesdropping on radio waves leaked from electronic devices handling information such as computers has become a problem. ..

As described above, in recent years, noise caused by electromagnetic waves has become a major social problem. Society needs a technology that does not emit radio waves and does not allow radio waves to enter, and the development of EMI (electro magnetic interference) technology that does not emit radio waves is in progress.

[0007] Further, in terms of immunity (devices are hindered by external electromagnetic noise) for those who do not enter radio waves, a technique for preventing external electromagnetic waves from entering the building is being advanced. As an external noise source, a building (electromagnetic wave shielding building) that does not allow these electromagnetic waves is required in a place where the electromagnetic environment is bad, such as near a train or a high voltage line.

An intelligent building is already known in which an electromagnetic wave shielding member is used to form an opening such as a skeleton and windows and entrances, and an electromagnetic wave shielding structure is applied to the entire building to enable communication inside the building by radio waves. There is. In this intelligent building, the windows and entrances and exits of the building are shielded from electromagnetic waves by using glass with mesh or glass with a conductive film attached. An example in which the electromagnetic wave shielding performance of the window is secured by using glass with a mesh or glass having a conductive film adhered thereto (Japanese Patent Laid-Open No. 62-112).
No. 886) will be described below.

FIG. 5 is a diagram for explaining an example of an electromagnetic wave shielding method for a glass window. In the figure, 7 is a sash, 13 is a window glass, 14 is an electromagnetic wave shielding layer, 15 is a conductive paint, 16
Indicates conductive rubber.

In FIG. 5, the window glass has an electromagnetic wave shielding layer 14 made of a conductive material such as a mesh or a film, and a conductive coating material 15 is applied to the end portion thereof. The conductive rubber 16 is attached to the conductive sash 7 and the window glass 1
3 for compressing and fixing the electromagnetic wave shielding layer 14 of the window glass 13 by the conductive paint 15 and the conductive rubber 16.
Conductivity between the sash 7 and the sash 7 is secured.

In particular, the electrically conductive rubber 16 makes the window glass 13
By compressing and fixing, the contact pressure between the conductive paint 15 and the conductive rubber 16 electrically connected to the electromagnetic wave shielding layer 14 becomes sufficiently large, and similarly, the sash 7 and the conductive rubber 16 are also fixed. Since the contact pressure between the two becomes sufficiently large, the contact resistance becomes small and sufficient conductivity can be obtained.

FIG. 6 is a sectional view for explaining an example of an electromagnetic wave shielding window structure which is generally constructed. In the figure, 1 is an electromagnetic wave shielding material, 2 is a conductive sealing material, 3 is a conductive material, 4
Is a backup material, 7 is a window frame, 8 is a setting block, 9 is a rim, and 11 is a conductive sealing material.

In FIG. 6, the electromagnetic wave shielding material 1 has a mesh, a film, or a coated electromagnetic wave shielding layer, and has a conductive sealing material 11 on the indoor side, a ridge 9 on the indoor side, and a conductive material 3 to surround the window. It is electrically connected and trying to secure electromagnetic wave shielding performance.

[0014]

A conventional electromagnetic wave shielding window is generally made of an electromagnetic wave shielding material whose periphery is covered with a conductive material and fixed to a window frame with a conductive sealing material. In this case, since the conductive sealing material between the electromagnetic wave shielding material and the window frame has a conductive function by using carbon powder as a filler, the elasticity and durability which are the original functions of the normal sealing material are impaired. Therefore, it is an insufficient sealing material.

Further, the metal powder such as nickel is used as the filler, but the electric characteristics are very high, but the metal powder is directly exposed to the surface, which causes a problem in durability.

Further, even if a member made of an electromagnetic wave shielding material and a good electric conductor of a window frame is electrically connected with a material having a higher resistance than that of a good electric conductor having carbon powder as a filler, the electromagnetic wave shielding performance of the electromagnetic wave shielding material alone. It is very difficult to maintain the electromagnetic wave shielding property, and in order to satisfy the electromagnetic wave shielding performance required for the electromagnetic wave shielding window, it is necessary to select the electromagnetic wave shielding material in consideration of the decrease in the electromagnetic wave shielding performance of the electromagnetic wave shielding material. Further, the ridge 9 is made of aluminum or the like having a surface film with low conductivity such as an oxide film, a composite film, or a fluorine film, but since the resistance is higher than that of a good electric conductor,
Even when electrically connected, it was difficult to maintain the electromagnetic wave shielding performance of the electromagnetic wave shielding material alone.

The present invention is to solve the above-mentioned problems and to maintain the shielding performance of a single electromagnetic wave shielding material,
It is an object of the present invention to provide an electromagnetic wave shielding window structure capable of obtaining durability equivalent to that of an ordinary window.

[0018]

Therefore, in the electromagnetic wave shielding window of the present invention, a conductive backup material made of a good electric conductor is arranged between the electromagnetic wave shielding material and the window frame, and further, a conductive ridge or the like made of a good electric conductor is used. Is used to maintain the electromagnetic wave shielding performance.

[0019]

In the electromagnetic wave shielding window structure of the present invention, the electromagnetic wave shielding material is electrically connected to the shield portion such as the wall, ceiling or floor around the window by using the conductive backup material, the conductive ridge and the like. As a result, the electromagnetic wave shielding performance can be secured.

[0020]

EXAMPLES Examples will be described below with reference to the drawings. 1 to 4 are cross-sectional views showing an embodiment of the electromagnetic wave shielding window structure of the present invention. In FIG. 1, 1 is an electromagnetic wave shielding material, 2 is a sealing material, 3 is a conductive material, 4 is a backup material, 5 is a conductive backup material, 6 is a conductive ridge (at least the surface of which has conductivity. For example, stainless steel, Those made of steel, those provided with a highly conductive film on the surface of aluminum or the like (for example, a film obtained by baking and coating a conductive paint containing a metal powder such as nickel or silver, or a silver paste), and the like. ), 7 is a window frame, 8 is a setting block, 9 is a rim (oxide film, composite film,
(Made of aluminum with a surface coating having a low conductivity such as a fluorine coating).

In the example shown in FIG. 1, a conductive backup material 5 is arranged between the conductive surface of the electromagnetic wave shielding material 1 and the conductive ridge 6, and is electrically connected. By doing so, the conductive backup material 5, the conductive ridge 6, and the window frame 7 are electrically integrated from the conductive surface of the electromagnetic wave shielding material 1, and the electromagnetic wave shielding performance can be improved. The electromagnetic wave shielding performance of each of the electromagnetic wave shielding windows shown in FIGS. 1 and 6 is shown in FIG. Compared with FIG. 6 (B), FIG.
Regarding the shielding performance (A) of the electromagnetic wave shielding window, it can be seen that excellent electromagnetic wave shielding performance is secured.

FIG. 2 is a diagram showing an example of a combination of a conductive backup material and a conductive ridge, where 1 is an electromagnetic wave shielding material,
2 is a sealing material, 4 is a backup material, 5 is a conductive backup material, 6 is a conductive ridge, 7 is a window frame, and 8 is a setting block. FIG. 2 shows an example in which the conductive backup material 5 made of a good electrical conductor and the conductive ridge 6 made of a good electrical conductor are integrated, so that the electrical connection from the conductive surface of the electromagnetic wave shielding material 1 becomes more reliable. ..

In the case of FIG. 1, the electromagnetic shielding material 1 is installed on the window frame 7, and the conductive ridge 6 is arranged. After that, the backup material 4 is installed on the outdoor side and the conductive backup material 5 is installed on the indoor side. However, since the conductive ridge 6 has already been arranged, the contact portion between the electromagnetic wave shielding material 1 and the conductive backup material 5,
Also, the contact portion between the conductive backup material 5 and the conductive ridge 6 cannot be confirmed.

In the case of FIG. 2, the conductive backup material 5 is securely arranged between the electromagnetic wave shielding material 1 and the conductive ridge 6, and the electromagnetic wave shielding performance of the electromagnetic wave shielding material 1 is exhibited. In the example of FIG. 2, the conductive backup material 5 and the conductive ridge 6 are integrated with each other so that the electrical connection is optimized in advance.

FIG. 3 is a view showing a combination of a conductive cover material 10 made of a good electric conductor and a ridge 9. 1 is an electromagnetic wave shielding material, 2 is a sealing material, 4 is a backup material, 5 is a conductive backup material, and 7 is a conductive material. Is a window frame, 8 is a setting block, 9 is a rim, and 10 is a conductive cover material.

FIG. 3 shows an example in which the conductive cover material 10 is placed over the ridge 9, and the electromagnetic wave shielding material can be provided by arranging the conductive cover material 10 even on the ridge 9 having no conductivity. It is possible to electrically integrate 1 to the window frame 7. Further, by replacing the existing general window with the electromagnetic wave shielding material 1 and the conductive backup material 5 and disposing the conductive cover material 10, it becomes possible to use the electromagnetic wave shielding window without replacing the window frame. ..

FIG. 4 shows a conductive material 12 made of a good electric conductor.
And a ridge 9 are combined, 1 is an electromagnetic wave shielding material, 2 is a sealing material, 3 and 12 are conductive materials, 4 is a backup material, 5 is a conductive backup material, 9 is a ridge, 7
Indicates a window frame, and 8 indicates a setting block.

In FIG. 4, a conductive metal 12 such as a conductive metal foil and a conductive paint is attached or applied to the surface of a rim having no conductivity to electrically shield the electromagnetic wave shielding material 1 from the window frame 7. It becomes possible to connect. Similar to FIG. 1, the examples of FIGS. 2 to 4 can also secure excellent electromagnetic wave shielding performance. Further, in the present invention, it is preferable that the conductive material 3 and the conductive cover material are connected to the peripheral shield portion over the entire window peripheral portion (four sides).

In the present invention, examples of the electromagnetic wave shielding material include silver on the surface of a transparent body such as plate glass and plastic plate,
A conductive glass frit paste containing a conductive metal such as copper or aluminum or a conductive paint is printed and then baked or cured to form a printed line, or an electromagnetic wave shielding film is formed, or both. May be formed by overlapping. In this case, it is preferable that both are electrically connected.

As the above-mentioned electromagnetic wave shielding film, a transparent conductive film containing a metal oxide such as indium oxide, tin oxide or zinc oxide as a main component, and a conductive thin film such as silver is laminated with an oxide film such as zinc oxide. It is possible to use the formed transparent conductive film or a conductive film in which these transparent conductive films are laminated with a heat ray reflective film or a color adjusting film.

By the way, on the surface of a transparent body made of, for example, a plate glass or a plastic plate, there are various shades and reflection colors depending on the type, thickness, treatment method, etc. of metal or metal oxide or a laminate thereof, The original transparency, light transmittance, and reflectance differ. When used as a window in a building in such a state, the function as an electromagnetic wave shielding building is maintained, but the living environment inside the room may be deteriorated and the original design intention of the building may not be met. In such a case, as described above, a color adjustment film or the like can be used to provide the color tone and the transmission / reflection performance that match the planning intention of the building.

[0032]

[Effect of the Invention] When constructing an electromagnetic wave shielding building, the window is the most vulnerable part in securing the electromagnetic wave shielding performance. For example, in a building called a shielded room that requires a high level of electromagnetic wave shielding performance, sufficient electromagnetic wave shielding cannot be ensured in the window, so the building has no window. However, as is clear from the above description, according to the present invention, the electromagnetic wave shielding material and the window peripheral portion are electrically integrated and are electrically connected to the building. An electromagnetic wave shielding window that does not impair performance can be constructed.

Further, since the general sealing material is applied on the conductive backup material between the window frame and the electromagnetic wave shielding material, the durability and weather resistance of the sealing material are higher than those when the conductive sealing material is used. Also, the same performance as that of the conventional window can be ensured, and the sealing work can be performed more easily than the conductive sealing material having carbon powder as a filler.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a basic configuration example of an electromagnetic wave shielding window according to the present invention.

FIG. 2 is a sectional view of another example of the electromagnetic wave shielding window according to the present invention.

FIG. 3 is a sectional view of another example of the electromagnetic wave shielding window according to the present invention.

FIG. 4 is a cross-sectional view of another example of the electromagnetic wave shielding window according to the present invention.

FIG. 5 is a sectional view of a conventional electromagnetic wave shielding window.

FIG. 6 is a sectional view of a conventional electromagnetic wave shielding window.

FIG. 7 is a graph showing the electromagnetic wave shielding performance of the electromagnetic wave shielding windows of FIGS. 1 and 6.

[Explanation of symbols]

 1 Electromagnetic Wave Shielding Material 2 Conductive Sealing Material 3 and 12 Conductive Material 4 Backup Material 5 Conductive Backup Material 6 Conductive Push Edge 7 Window Frame 8 Setting Block 9 Push Edge 10 Conductive Cover Material 11 Conductive Sealing Material 13 Window Glass 14 Electromagnetic Wave Shielding Layer 15 Conductive paint 16 Conductive rubber

Claims (5)

[Claims] 1. An electromagnetic wave shielding window characterized in that an electromagnetic wave shielding material is electrically connected to a peripheral portion of the window by using a ridge made of a good electric conductor and a conductive backup material. 2. The electromagnetic wave shielding window according to claim 1, wherein the conductive backup material is integrated with a ridge made of a good electric conductor. 3. The electromagnetic wave shielding window according to claim 1, wherein the ridge made of a good electric conductor is made of stainless steel or steel, or made of aluminum with a surface film having good conductivity. 4. An electromagnetic wave shielding material, characterized in that an electromagnetic wave shielding material is electrically connected to a peripheral portion of a window by using a conductive backup material and a conductive material interposed between a ridge and the conductive backup material. window. 5. The electromagnetic wave shielding window according to claim 1, wherein the window frame is made of any one of aluminum, steel, plastic, wood, or a combination thereof.