JPH11181910A - Electromagnetic wave shield panel and electromagnetic wave shield wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reflect electromagnetic wave from the outside, absorb electromagnetic wave from the inside, and easily improve an electromagnetic wave shield wall, by lining a metal plate with heat insulating material, and laminating an electric wave absorbing plate on the back of the heat insulating material. SOLUTION: A metal plate 1 is bent to form a fitting projecting part 5 and a fitting recessed part 6, conductive packings 7 are interposed between conductive parts 9, 9, and the adjoining electromagnetic wave shield panels A, A are connected together. At that time, on the electric wave absorbing plate 2 side of the shield panel A, the end faces of the absorbing plates 2, 2 are conducted to each other through a conductive cap interposed piece, the surfaces of the absorbing plates 2, 2 are surely electrically connected together through the cap connecting plate. Hereby, the whole shape of the panel is maintained by the metal plate 1, heat is insulated by a heat insulating material 3, electromagnetic wave is reflected by the metal plate 1, and incidental electromagnetic wave is taken in by the electric wave absorbing plate 2 to absorb the energy. Hereby it is consumed as heat, the electromagnetic wave from the outside is reflected by the metal plate 1 to intercept, the electromagnetic wave from the inside is absorbed, and hence electromagnetic wave can be shielded.

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 panel and an electromagnetic wave shielding wall, and more particularly, to an electromagnetic wave shielding wall which reflects an electromagnetic wave from the outside and absorbs an electromagnetic wave inside so as to perform electromagnetic wave shielding well. The present invention relates to a technology that is easily obtained.

[0002]

2. Description of the Related Art In recent years, there is a possibility that an electromagnetic wave is inputted as a control signal from another device to a control device and erroneous control is performed. For this reason, each control device is provided with an electromagnetic wave shielding means and a control device. Electromagnetic wave shielding means is provided to prevent external electromagnetic waves from entering the walls of the room in which the devices are stored.

[0003] Hospitals and the like equipped with various control devices tend to prohibit the use of mobile phones that emit electromagnetic waves, and are currently suffering from electromagnetic interference.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of such a problem, and an object of the present invention is to use a metal plate on the surface of a panel while providing good electromagnetic wave shielding by the panel. An object of the present invention is to provide an electromagnetic wave shield panel and an electromagnetic wave shield wall which can effectively perform the electromagnetic wave shield of the wall by effectively utilizing the connection structure of the heat insulating panel.

[0005]

According to a first aspect of the present invention, a heat insulating material is lined with a metal plate, and a radio wave absorbing plate is laminated on a back surface of the heat insulating material. According to a second aspect of the present invention, a heat insulating material 3 made of an electrically insulating material is lined with the metal plate 1 and a radio wave absorbing plate 2 mainly made of artificial mineral fibers is laminated on the back surface of the heat insulating material 3. Things.

According to a third aspect of the present invention, the metal plate 1 is bent at one end of the panel to form the fitting projection 5, and the other end of the panel is formed with the fitting recess 6, thereby forming the fitting projection 5 and the fitting projection. It is characterized in that a part of the recess 6 is made uncoated to form a conductive portion 9. In claim 4, a metal plate 1 is lined with a heat insulating material 3 made of an electrically insulating material, a radio wave absorbing plate 2 mainly made of artificial mineral fibers is laminated on the back surface of the heat insulating material 3, and a metal plate 1 is provided at one end of the panel. The plate 1 is bent to form a fitting protrusion 5 and a fitting recess 6 is formed at the other end, and a part of the fitting protrusion 5 and the fitting recess 6 is unpainted to form a conductive portion 9. The electromagnetic wave shield panel A is constituted by connecting the electromagnetic wave shield panels A by interposing a conductive packing 7 between the conductive portions 9 of the fitting projection 5 and the fitting concave portion 6. It is assumed that.

According to a fifth aspect of the present invention, a metal plate 1 is lined with a heat insulating material 3 of an electrically insulating material, and a radio wave absorbing plate 2 mainly made of artificial mineral fibers is laminated on the back surface of the heat insulating material 3 to form an electromagnetic wave shielding panel. A, the interposition piece 1 on the back of a conductive cap 10 having a substantially T-shaped cross section and the same material as the radio wave absorbing plate 2
1 is interposed between the radio wave absorbing plates 2 and 2, and
Is characterized in that the connection plates 12 which are substantially orthogonal are pressed against the end surfaces of the radio wave absorption plates 2 and 2 to connect the electromagnetic wave shield panels A and A.

According to a sixth aspect of the present invention, a metal plate 1 is lined with a heat insulating material 3 made of an electrically insulating material, and a radio wave absorbing plate 2 mainly made of artificial mineral fibers is laminated on the back surface of the heat insulating material 3. The metal plate 1 is bent to form a fitting protrusion 5 and a fitting recess 6 is formed at the other end, and the fitting protrusion 5 and a part of the fitting recess 6 are unpainted to form a conductive portion. 9, an electromagnetic wave shielding panel A is formed, and a conductive packing 7 is interposed between the conductive portions 9 of the fitting protrusion 5 and the fitting recess 6, and has a substantially T-shaped cross section. Conductive cap 10 of the same material as
Of the electromagnetic wave shielding panel A by interposing the interposition piece 11 between the radio wave absorbing plates 2 and 2 and pressing the connecting plate 12 substantially orthogonal to the interposition piece 11 against the end surfaces of the radio wave absorbing plates 2 and 2. , A are connected.

(Function) In the first aspect, the electromagnetic wave is reflected by the metal plate 1 and is incident by the radio wave absorbing plate 2 while maintaining the overall shape of the panel with the metal plate 1 and insulating the heat with the heat insulating material 3. Electromagnetic waves can be taken in without being reflected, and their energy can be absorbed and consumed as heat. Therefore, by constructing the metal plate 1 outside, the external electromagnetic wave is reflected by the metal plate 1. As a result, the electromagnetic wave can be shielded inside while having a simple structure, and it is effective for a wall panel of a hospital or the like.

According to a second aspect of the present invention, while maintaining the overall shape of the panel with the metal plate 1 and insulating with the heat insulating material 3, the electromagnetic wave is reflected by the metal plate 1 and the radio wave absorbing plate 2 is reflected.
It is possible to take in the electromagnetic wave that has entered without reflecting it, absorb its energy, and consume it as heat. Therefore, by constructing the metal plate 1 so as to be outside, the electromagnetic wave from the outside can be absorbed by the metal. The plate 1 reflects and blocks, and absorbs the internal electromagnetic wave. As a result, the electromagnetic wave shield can be performed inside with a simple configuration, which is effective for a wall panel of a hospital or the like.

Moreover, since the radio wave absorbing plate 2 is mainly made of artificial mineral fibers such as rock wool and glass wool, the radio wave absorbing plate 2 also enhances the heat insulation and the heat retention, and the synergy with the heat insulating material 3 In addition, the heat insulation function can be greatly improved, and the sound absorption function can be obtained, which is more effective for wall panels in hospitals and the like. According to the third aspect, the adjacent electromagnetic wave shield panels A are electrically connected by the conductive packing 7 by effectively utilizing the fitting protrusions 5 and the fitting recesses 6 formed by bending the metal plate 1. Therefore, the electromagnetic wave shield configuration can be simplified as compared with a configuration in which each of the electromagnetic wave shield panels A is grounded.

[0012] Further, the fourth aspect has the same effect as the third aspect. In claim 5, the radio wave absorbing plate 2
A conductive piece 11 of a conductive cap 10 having the same material and having a substantially T-shaped cross section electrically connects the end surfaces of the radio wave absorbing plates 2 and 2 with each other. The surfaces of the plates 2 and 2 are electrically connected to each other, so that the conductive cap 10 can securely connect the radio wave absorbing plates 2 and 2 electrically, and each of the electromagnetic wave shield panels A is grounded. The structure of the electromagnetic wave shield is simplified as compared with the configuration of the present invention.

[0013] Further, the sixth aspect has the functions of the fourth and fifth aspects.

[0014]

1A is a sectional view of an electromagnetic wave shield panel A, and FIG. 1B is an explanatory view showing an electrically conductive portion 9 of a metal plate 1. FIG. The electromagnetic wave shield panel A has a back surface of a metal plate 1 lined with a heat insulating material 3 of a synthetic resin foam as an electric insulating material, and a back surface of the heat insulating material 3 mainly made of artificial mineral fibers such as rock wool and glass wool. The electromagnetic wave absorbing plates 2 are laminated.

A metal plate 1 is bent at one end of the electromagnetic wave shield panel A to form a fitting projection 5 at an intermediate portion in the thickness direction of the panel, and the metal plate 1 is bent at the other end to fit. Forming a fitting recess 6 to be fitted to the protrusion 5, and forming the fitting protrusion 5 and the fitting recess 6
The electromagnetic wave shield panels A, A can be connected to each other. A nailing recess 15 is formed on the surface of the electromagnetic wave shield panel A on the side of the fitting protrusion 5, and the covering piece 16 extends on the surface of the fitting recess 6,
When the fixture 13 is driven into the nailing recess 15 and fixed, the nailing portion is covered with a cover piece 16 so as to be hidden.

At both ends of the electromagnetic wave shield panel A, a heat insulating material 3 exists between the metal plate 1 and the radio wave absorbing plate 2 to electrically insulate the metal plate 1 and the radio wave absorbing plate 2. . The radio wave absorbing plate 2 absorbs an incident electromagnetic wave without reflecting it, absorbs its energy, and consumes it as heat. A plastic-made plastic to which carbon is added utilizes electric loss. The radio wave absorbing plate 2 of the embodiment is, for example, a material obtained by attaching carbon particles to rock wool or glass wool, and a trade name “Rock Wool Carbon Felt” manufactured by Nitto Boseki Co., Ltd.
However, it goes without saying that other compositions may be used.

FIG. 1B shows an electrically conductive portion 9 of the metal plate 1.
FIG. 3 is a schematic perspective view of an apparatus for forming the conductive portion 9. A method for forming the conductive portion 9 when a painted steel plate is used as the metal plate 1 will be described.
The metal plate 1 is fed from a feeding roll (not shown), and a coating material 18 of an electrically insulating material is applied to an intermediate portion in the width direction by an application roll device 17, and the coating material 18 is applied to both ends of the metal plate 1 in the width direction. The metal plate 1 not coated with is exposed to form the conductive portions 9.

The coating roll device 17 is of a two-roll type consisting of a pick-up roll 19 and an applicator roll 20. A part of the pick-up roll 19 is immersed in a paint pan 21 in which the paint 18 is stored. With the rotation, the paint 18 is attached from the paint pan 21 and pulled up, the paint 18 of the pickup roll 19 is transferred to the applicator roll 19, and the paint 18 is applied to the metal plate 1.
Is configured to be applied to the intermediate portion. The application roll device 17 may be of a three-roll type. By the way, in order to form the conductive portion 9, the paint 18 may be applied to the entire surface, and then the paint 18 at a necessary portion may be scraped off.

Incidentally, the metal sheet 1 may be a hot-dip galvanized steel sheet or a colored hot-dip galvanized steel sheet. The metal plate 1 is formed by a roll forming apparatus as shown in FIG.
As shown in (b), a roll is formed, and then a synthetic resin foam material is injected into the back of the metal plate 1 at the resin filling portion, laminated on the back of the heat-insulating material 3 which has been foam-filled and solidified, and further heat-insulated. The electromagnetic wave shield panel A is obtained by laminating the radio wave absorbing plate 2 on the back surface of the material 3. The heat insulating material 3 may be a material such as a rock wool material other than a material obtained by foaming and hardening a synthetic resin foam material.

Thus, the conductive packing 7 is interposed between the conductive portions 9, 9 of the fitting projections 5 and the fitting recesses 6 of the adjacent electromagnetic wave shield panels A, A, so that the metal plates 1, 1 are connected to each other. Are electrically connected to each other to connect the electromagnetic wave shield panels A, A by fitting the concave and convex. Furthermore, a watertight packing 8 is interposed between the fitting protrusion 5 and the fitting recess 6 to ensure watertightness.

As the conductive packing 7, for example, a product name "Elasto mesh" manufactured by Kitagawa Kogyo Co., Ltd., which is made of silicone or neoprene and covered with a conductive wire mesh formed by knitting a wire into a mesh. Although any of them may be referred to, any type may be used as long as it has a conductive and watertight function. As shown in FIG.
Is the same material as the radio wave absorbing plate 2, for example, and its cross section is substantially T
And the interposition piece 1 on the back of the conductive cap 10
1 is interposed between the radio wave absorbing plates 2 and 2, and
Is pressed against the end surfaces of the radio wave absorbing plates 2 and 2 so as to electrically connect the radio wave absorbing plates 2 and 2 to each other. The conductive cap 10 may be made of a different material from the radio wave absorbing plate 2.

According to the above configuration, the heat insulating material 3 provides the heat insulating property while maintaining the overall shape of the panel with the metal plate 1, and the radio wave absorbing plate mainly composed of the metal plate 1 and artificial mineral fibers. 2, the electromagnetic wave shielding function can be obtained, and the sound absorbing function can also be obtained by the porous radio wave absorbing plate 2 mainly made of artificial mineral fibers, which is effective for wall panels in hospitals and the like.

In this case, the fitting protrusions 5 and the fitting recesses 6 formed by bending the metal plate 1 are effectively used, and a conductive packing 7 is interposed between the conductive portions 9 so as to be adjacent to each other. Can be electrically connected to each other, and the electromagnetic wave shield configuration is simplified as compared with a configuration in which each of the electromagnetic wave shield panels A is grounded.

On the side of the electromagnetic wave shielding panel A on the side of the electromagnetic wave absorbing plate 2, the end faces of the electromagnetic wave absorbing plates 2, 2 are formed by an interposition piece 11 of a conductive cap 10 having the same material as that of the electromagnetic wave absorbing plate 2 and having a substantially T-shaped cross section. There is electrical continuity between them. In addition, the connection plate 12 of the conductive cap 10 allows the radio wave absorption plates 2, 2
Are electrically connected to each other. Thus, the radio wave absorbing plates 2 and 2 can be reliably electrically connected by the conductive cap 10, and the electromagnetic wave shielding configuration is simplified as compared with the configuration where each of the electromagnetic wave shielding panels A is grounded.

Incidentally, a decorative cloth may be provided on the surface of the radio wave absorbing plate 2.

[0026]

According to the first aspect of the present invention, since the heat insulating material is lined with the metal plate and the radio wave absorbing plate is laminated on the back surface of the heat insulating material, the whole shape of the panel is maintained by the metal plate and the heat insulating material is used. While reflecting the electromagnetic wave by the metal plate, the electromagnetic wave incident by the radio wave absorption plate can be taken in without being reflected, and its energy can be absorbed and consumed as heat. As a result, the electromagnetic wave from outside can be reflected and cut off by the metal plate, and the internal electromagnetic wave can be absorbed.As a result, the electromagnetic wave shield can be performed inside with a simple configuration. There is an advantage that it is effective for wall panels such as.

In the second aspect, the metal plate is lined with a heat insulating material made of an electrically insulating material, and a radio wave absorbing plate mainly made of artificial mineral fibers is laminated on the back surface of the heat insulating material. While maintaining the overall shape of the panel and insulating it with a heat insulating material, the electromagnetic wave is reflected by the metal plate and the electromagnetic wave coming in by the radio wave absorbing plate is absorbed without being reflected, and its energy is absorbed and consumed as heat. Therefore, by constructing so that the metal plate is outside, the external electromagnetic wave is reflected and blocked by the metal plate, absorbs the internal electromagnetic wave, and as a result,
Although it has a simple configuration, it is possible to shield electromagnetic waves inside, and there is an advantage that it is effective for wall panels in hospitals and the like.

Moreover, since the radio wave absorbing plate 2 is mainly made of artificial mineral fibers such as rock wool and glass wool, the radio wave absorbing plate 2 also enhances the heat insulating property and the heat retaining property. The heat insulation function can be greatly enhanced, and the sound absorption function can also be obtained, which has the advantage of being more effective for wall panels in hospitals and the like. In the third aspect, a fitting plate is formed by bending a metal plate at one end of the panel, and a fitting recess is formed at the other end, and a part of the fitting protrusion and the fitting recess are not painted. By using the fitting projection and the fitting recess formed by bending the metal plate effectively, the adjacent electromagnetic wave shielding panel can be electrically connected by the conductive packing. In addition, there is an advantage that the electromagnetic wave shield configuration can be simplified as compared with a configuration in which each of the electromagnetic wave shield panels is grounded.

According to the fourth aspect, the same effect as that of the third aspect can be obtained. In claim 5, a metal plate is lined with a heat insulating material of an electrically insulating material, and a radio wave absorbing plate mainly composed of artificial mineral fibers is laminated on the back of the heat insulating material to form an electromagnetic wave shielding panel, and the cross section is substantially the same. A T-shaped interposition piece on the back of the conductive cap made of the same material as the radio wave absorption plate is interposed between the radio wave absorption plates, and a connection plate that is substantially perpendicular to the interposition piece is pressed against the end surface of the radio wave absorption plate. Since the electromagnetic wave shield panel is connected to the end of the electromagnetic wave absorbing plate, the conductive cap is electrically conductive between the end surfaces of the electromagnetic wave absorbing plate by the interposition piece of the conductive cap having the same material as the electromagnetic wave absorbing plate and having a substantially T-shaped cross section. The connection plate can electrically connect between the surfaces of the radio wave absorption plates, the conductive cap can securely connect the radio wave absorption plates electrically, and each of the electromagnetic wave shield panels is grounded. Electromagnetic wave seal compared to There is an advantage that it is possible to simplify the configuration.

In the sixth aspect, the effects of the third and fifth aspects can be obtained.

[Brief description of the drawings]

FIGS. 1A and 1B show an embodiment of the present invention, wherein FIG. 1A is a cross-sectional view of an electromagnetic wave shield panel, and FIG. 1B is an explanatory view showing an electrically conductive portion of a metal plate.

FIG. 2 is a sectional view after connection.

FIG. 3A is a schematic perspective view of a coating roll device, and FIG.
FIG. 4 is an explanatory view showing a conductive portion.

[Explanation of symbols]

 A electromagnetic wave shield panel 1 metal plate 2 radio wave absorption plate 3 heat insulating material 5 fitting protrusion 6 fitting recess 7 conductive packing 9 conductive part 10 conductive cap 11 interposition piece 12 connection plate

Claims (6)

[Claims] 1. An electromagnetic wave shield panel comprising a metal plate lined with a heat insulating material, and a radio wave absorbing plate laminated on the back surface of the heat insulating material. 2. An electromagnetic wave shield panel comprising a metal plate lined with a heat insulating material of an electrically insulating material, and a radio wave absorbing plate mainly composed of artificial mineral fibers laminated on the back surface of the heat insulating material. 3. A fitting plate is formed by bending a metal plate at one end of the panel, and a fitting recess is formed at the other end of the panel. The electromagnetic wave shield panel according to claim 2, wherein the electromagnetic wave shield panel is formed by a conductive portion. 4. A metal plate is lined with a heat insulating material of an electrically insulating material, a radio wave absorption plate mainly made of artificial mineral fibers is laminated on the back of the heat insulating material, and the metal plate is bent at one end of the panel. Forming the fitting projection and forming the fitting recess at the other end, forming a part of the fitting projection and the fitting recess unpainted to be a conductive portion to constitute an electromagnetic wave shielding panel, An electromagnetic wave shielding wall comprising an electromagnetic wave shielding panel connected with a conductive packing interposed between a conductive portion between the electromagnetic wave shielding wall and the fitting concave portion. 5. An electromagnetic wave shield panel comprising a metal plate lined with a heat insulating material of an electrically insulating material, and a radio wave absorbing plate mainly made of artificial mineral fibers laminated on a back surface of the heat insulating material.
The interposition piece on the back of the conductive cap, which is substantially T-shaped in cross section and made of the same material as the radio wave absorption plate, is interposed between the radio wave absorption plates, and the connection plate that is substantially perpendicular to the interposition piece is the end of the radio wave absorption plate An electromagnetic wave shielding wall comprising an electromagnetic wave shielding panel connected to the surface by pressing against the surface. 6. A metal plate is lined with a heat insulating material of an electrically insulating material, a radio wave absorbing plate mainly composed of artificial mineral fibers is laminated on the back of the heat insulating material, and the metal plate is bent at one end of the panel. Forming the fitting projection and forming the fitting recess at the other end, forming a part of the fitting projection and the fitting recess unpainted to be a conductive portion to constitute an electromagnetic wave shielding panel, A conductive packing is interposed between the conductive part and the fitting recess, and an interposition piece on the back of a conductive cap having a substantially T-shaped cross section and made of the same material as the radio wave absorbing plate is interposed between the radio wave absorbing plates. An electromagnetic wave shield wall comprising an electromagnetic wave shield panel connected by pressing a connection plate substantially orthogonal to the interposition piece against an end surface of the radio wave absorption plate.