JP2003064799A - Radio wave absorbing panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a radio wave absorbing panel for use in a glass curtain wall, which is improved in mounting efficiency and workability while maintaining the radio wave absorbing properties thereof, to thereby prevent increase in mounting cost. SOLUTION: The radio wave absorbing panel 1 is formed by arranging a radio wave absorbing material 3 on part of the outside of a precast plate 54, and then arranging a glass on the outside of the radio wave absorbing material. Alternatively, a first radio wave absorbing material is arranged on part of the outside of the precast plate, then the glass is arranged on the outside of the first radio wave absorbing material, and a second radio wave absorbing material is arranged at least on part of the outside of the precast plate, on which the first radio wave absorbing material is not arranged, followed by arranging an outer finish material on the outside of the second radio wave absorbing member, to thereby form the radio wave absorbing panel.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio wave absorption panel which is used for an outer wall of a high-rise building and prevents unnecessary reflected radio waves such as television radio waves, and in particular, most of the outer wall surface is made of glass. The present invention relates to a radio wave absorption panel of a glass curtain wall.

[0002]

2. Description of the Related Art The outer wall of a high-rise building reflects TV radio waves, and the reflected radio waves interfere with TV broadcasting, causing a problem of radio interference such as a so-called ghost on the TV screen. As a countermeasure against this, for example, a common antenna is installed in an area where radio interference occurs. However, this method has a problem that the equipment costs a lot and the base station and the cable are destroyed by a natural disaster such as an earthquake. Therefore, a so-called radio wave absorption panel in which an outer wall of a building itself has a radio wave absorption function has been put into practical use. A ferrite plate is mainly used as the electromagnetic wave absorbing material, and various electromagnetic wave absorbing panels in which these magnetic materials are embedded have been proposed.

An example of a conventional radio wave absorption panel will be described with reference to the drawings. Hereinafter, when a radio wave absorption panel is installed in a building, the direction or the surface that is the outside of the building is referred to as the outside, the direction or the surface that is the inside of the building is referred to as the inside, and the direction that is the vertical direction of the building is It will be referred to as the vertical direction.
FIG. 20 is a sectional view of a conventional radio wave absorption panel 109, and FIG.
[Fig. 4] is a cross-sectional view of a state where the conventional radio wave absorption panel 109 is installed in a building as seen from the side. The absorber layer 5 (second layer) is composed of the radio wave absorber 3 and the rib material 4 which is a low dielectric material (GAP portion). Outside the absorber layer 5, the outer plate 2 (first layer) is
Inner plate 6 (third layer) is arranged on the inner side to sandwich 7
Is configured. A ferrite plate is mainly used as the radio wave absorber 3. As the outer plate 2 or the inner plate 6, for example, a calcium silicate plate is used. A metal reflector 91 (fourth layer) is arranged inside the sandwich 7 to form a conventional radio wave absorption panel 109. In the absorber layer 5, the electromagnetic wave absorbing material 3 is continuously arranged in the magnetic field direction of the incident electromagnetic wave (Y direction in FIG. 20) such that the surfaces constituted by the width and the thickness are aligned, and the electromagnetic wave absorbing material 3 is arranged. It is formed by repeating at a predetermined GAP rate (ratio of the dimension of the rib material 4 to the dimension of the radio wave absorber 3 in the X direction) in the electric field direction (also the X direction) orthogonal to the magnetic field direction. As shown in FIG.
This radio wave absorption panel 109 is installed between the glass 8 for the glass curtain wall of the building and the structural steel 9 of the building that reflects radio waves. With such a configuration, the TV radio waves incident on the outer wall of the building are either absorbed by the absorber layer 5 or reflected by the reflector 91 in a phase opposite to that of the incident radio waves to cancel the incident radio waves and reflect from the outer wall. Is suppressed.

In the glass curtain wall using this conventional radio wave absorption panel, as shown in FIG. 21, the glass 8 is connected in the vertical direction (Y direction) via the aluminum sash 92, and the radio wave absorption panel 109 is connected. It was connected in the up-down direction via the electromagnetic wave absorption panel support material 93 connected to the aluminum sash 92 (or connected to the ceiling or floor).

[0005]

In the conventional glass curtain wall, the glass 8 and the electromagnetic wave absorption panel 109 are separately made, and the aluminum sash 9 is used at the construction site as described above.
2 or was assembled (connected) via the radio wave absorption panel support material 93 or the like. For this reason, there is a problem that the assembly cost at the construction site is increased and the construction cost is increased. Therefore, an object of the present invention is to solve these problems, to improve the workability and workability while maintaining the radio wave absorption performance, and to provide a radio wave absorption panel for a glass curtain wall that prevents an increase in construction costs. is there.

[0006]

The first invention of the present application is characterized in that a radio wave absorber is provided on a part of the outside of the precast plate, and glass is provided on the outside of the radio wave absorber. It is a radio wave absorption panel.

According to a second aspect of the present invention, a first electromagnetic wave absorber is provided on a part of the outside of the precast plate, glass is provided on the outside of the first electromagnetic wave absorber, and the first electromagnetic wave absorber is provided. The second radio wave absorber is provided on at least a part of the outside of the precast plate where the radio wave absorber is not provided, and the exterior material is provided on the outside of the second radio wave absorber. It is a radio wave absorption panel.

In the present invention, when a ferrite plate is used as a radio wave absorber, if the width (electric field direction) dimension of the ferrite plate is A and the thickness (inside and outside direction) dimension is B, then A
The dimension is ≧ B.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a radio wave absorption panel of the present invention will be described with reference to the drawings. (Embodiment 1) FIG. 1 is a sectional view showing Embodiment 1 of the present invention, and FIG. 2 is an enlarged view of a radio wave absorption panel 1 described later in FIG. Note that the same portions are shown in FIG. 20 or FIG.
The same reference numeral is attached. The radio wave absorption panel 1 is vertically symmetrical with respect to a center line (not shown) in the vertical direction of the paper surface of FIG. The absorber layer 5 is a radio wave absorber 3 and a low dielectric material (GAP part)
The rib material 4 is In the absorber layer 5, the electromagnetic wave absorbers 3 are arranged continuously in the magnetic field direction of an incident electromagnetic wave (vertical direction on the paper surface of FIG. 2) by matching the surfaces constituted by the width and the thickness, and the electromagnetic wave absorbers 3 are arranged. Is repeated at a predetermined GAP rate (ratio of the dimension of the rib material 4 to the dimension of the radio wave absorber 3 in the direction of the electric field) in the direction of the electric field (direction orthogonal to the paper surface of FIG. 2) orthogonal to the direction of the magnetic field. The outer plate 2 is provided outside the absorber layer 5.
The sandwich body 7 having the inner plate 6 disposed inside of the precast plate 54 made of concrete containing the reflection reinforcing bar 53 and the structural reinforcing bar 52 (not shown in FIG. 1 and FIG. 2) It is disposed in the recess 54a on the outer surface. A surface layer 11 is provided outside the outer plate 2. Normally, the surface layer 11 is provided on the entire outer surface of the outer plate 2, but it is not always required to be provided on the entire surface, and may not be provided on a part of the surface. Further, the glass 8 is disposed on the outer side of the precast plate 54 with a space therebetween, and the exterior material 51 is disposed on the outward convex portions 54b of the upper and lower end portions of the precast plate 54. In this way, the sandwich body 7, the precast plate 54,
A radio wave absorption panel 1 for a glass curtain wall is configured in which the surface layer 11, the glass 8 and the exterior material 51 are arranged and integrated. The dimensions of the precast plate 54 and the exterior material 51 are appropriately set so that the surfaces of the upper and lower exterior materials 51 are aligned (the protrusions on the right side of the drawing are the same). Then, the width and thickness of the absorber layer 5 are set to appropriate dimensions according to the characteristics of the radio wave to be taken. The reflection reinforcing bars 53 are arranged in the electric field direction, and the same applies to other embodiments below. As the radio wave absorber 3, for example, a ferrite plate is used.
When the radio wave absorber 3 is a ferrite plate, the width (in the direction of the electric field, that is, the left-right direction on the paper surface of the drawing) of the ferrite plate is A, and the thickness (inward and outward directions, that is, the direction orthogonal to the paper surface of the drawing) is B. , So that A ≧ B,
This also applies to other embodiments described below. As the rib material 4, the outer plate 2 or the inner plate 6, for example, a calcium silicate plate is used, but the rib material 4 is not limited to this and various materials can be used. As the exterior material 51, for example, a building tile is used, but the exterior material is not limited to this and various materials can be used. When the sandwich body 7 in which the outer plate 2, the absorber layer 5 and the inner plate 6 are fixed to each other is manufactured, adhesion is generally used as a fixing means, but the fixing means is not limited to this, and a fastening member, a bolt nut is used for fastening. It is also possible to use appropriate means such as As a means for fixing the sandwich 7 to the precast plate 54, for example, a nut (not shown) (not shown) is generally fastened to a bolt (not shown) embedded in the precast plate 54. However, the present invention is not limited to this, and may be combined with an appropriate auxiliary fastener such as a stopper, or any fixing means other than these may be adopted. As a fixing means of the exterior material 51 to the precast plate 54, a fixing member (not shown) is generally fixed, but the fixing means is not limited to this and any other fixing means can be adopted. As a fixing means of the glass 8 to the precast plate 54, a method of attaching via a window component such as a gasket sash is generally used, but the fixing method is not limited to this, and any other fixing means can be adopted. The surface layer 11 is provided by spraying foam beads on the outside of the outer plate 2. The thickness of the surface layer 11 is preferably 15 to 40 mm, more preferably 20.
~ 35 mm. Foamed beads are excellent in heat insulation, lightweight,
It is inexpensive, has good adhesion to the outer panel 2, and has a good appearance after construction. The method of providing the surface layer 11 is not limited to this, and other materials having excellent heat insulating properties may be used,
The construction of these materials is not limited to spraying, and various methods such as preliminarily manufacturing and attaching a plate-like material are possible, and all methods of providing a material having excellent heat insulating properties on the outside of the outer plate 2 Can be adopted. By using a material having excellent heat insulating properties as the surface layer 11 as described above, the heat insulating effect on the building can be improved. In particular, the surface layer 11 is effective in solving the problem that the outside air temperature is transmitted through the glass 8 and the energy such as the electric power for cooling and heating for increasing the summer heat and the winter cold in the building is increased.

The radio wave absorption panel 1 is installed outside the structural steel 9 of a building that reflects radio waves. With such a configuration, the TV radio waves incident on the outer wall of the building are either absorbed by the radio wave absorber 3 or reflected by the reflection reinforcing bar 53 in a phase opposite to that of the incident radio waves to cancel out the incident radio waves and reflect from the outer wall. Is suppressed. As described above, the conventional glass curtain wall includes the glass 8 and the radio wave absorption panel 1.
09 is made separately, and aluminum sash 9
2 or because it was assembled (connected) via the electromagnetic wave absorption panel support material 93 or the like, there was a problem that the assembly work took time and the construction cost increased. On the other hand, in the radio wave absorption panel 1 for the glass curtain wall of the present embodiment, as described above, the sandwich body 7, the exterior material 51 and the glass 8 are precast plates 54.
Since it is fixedly integrated with the above, it is possible to solve the problem that the labor for assembling at the construction site is small and the construction cost is increased. In the electromagnetic wave absorption panel 1 installed on each floor of the building, a window glass 10 is vertically arranged.
Is sandwiched. By doing so, the appearance of the glass curtain wall type building is such that the exterior surface of the exterior material 51 is sandwiched in a horizontal strip shape on the glass surface of the glass 8 and the window glass 10. Since the design can be different from the appearance of a conventional glass curtain wall type building in which substantially the entire surface is a glass surface, the degree of freedom in design design becomes great. The heat insulation effect of the surface layer 11 against the outside air temperature is large. In addition, the precast plate 54 made of concrete enhances the sound insulation effect and the heat insulation effect.

(Second Embodiment) FIG. 3 shows a second embodiment of the present invention.
FIG. 4 is a cross-sectional view showing the electric wave absorption panel 1 of FIG.
FIG. The same parts are designated by the same reference numerals as those in FIG. 1, FIG. 2, FIG. 20 or FIG. The radio wave absorption panel 102 is vertically symmetrical with respect to a center line (not shown) in the vertical direction of the paper surface of FIG. Absorber layer 5021
Is the first electromagnetic wave absorber 3021 and low dielectric (GAP part)
Which is the first rib material 4021. This absorber layer 5
A sandwich body 702 having an outer plate 202 on the outside of 021 and an inner plate 602 on the inside is formed. The material and structure of the sandwich body 702 are the same as those of the sandwich body 7 of the first embodiment. Reflective rebar 53 and (if necessary)
The precast plate 542 made of concrete having a built-in structural rebar (not shown) has two recesses 542a on the outer surface,
The convex portions 542b at the upper and lower ends and the convex portion 542 at the middle portion
with c. The sandwich body 702 has two recesses 54
2a. A surface layer 112 is provided outside the outer plate 202. Normally, the surface layer 112 is provided on the entire outer surface of the outer plate 202, but it may be provided on a part of the surface instead of the entire surface. Further, a glass 802 is arranged on the outer side of the glass 802 with a gap therebetween. The exterior material 51 is disposed on the protrusions 542b at both ends. The second electromagnetic wave absorber 3022 and the second dielectric (GAP part) are provided on the convex part 542c in the middle part.
The absorber layer 5022 made of the rib material 4022 is provided, and the exterior material 512 is provided outside the absorber layer 5022. The materials of the exterior materials 51 and 512 are the same as those of the exterior material 51 of the first embodiment. The material and structure of the absorber layer 5022 are the absorber layer 50.
It is similar to 21. In this way, the precast board 5
42 to sandwich 702, surface layer 112, absorber layer 5
022, exterior material 51, exterior material 512 and glass 802
A radio wave absorption panel 102 for a glass curtain wall is formed by arranging and integrating. The precast plate 542 and the absorber layer 5 so that the surfaces of the exterior material 51 and the exterior material 512 are aligned (the protrusions on the right side of the drawing are the same).
The dimensions of 021 and 502 and the exterior materials 51 and 512 are set appropriately. Then, the width and thickness of the absorber layers 5021 and 5022 are set to appropriate dimensions according to the characteristics of the radio wave to be taken. The fixing means when manufacturing the sandwich body 702 is the same as that of the sandwich body 7 of the first embodiment. The means for fixing the sandwich body 702, the exterior material 51 or the glass 802 to the precast plate 542 is the same as the means for fixing the sandwich body 7, the exterior material 51 or the glass 8 to the precast plate 54 in the first embodiment. Absorber layer 5022
The pre-cast plate 542 is generally adhered to the pre-cast plate 542 by, but not limited to, the pre-cast plate 54.
The bolt (or nut) embedded in 2 and a suitable auxiliary fastener may be combined, or any fixing means other than these may be adopted. The exterior material 512 is generally not fixed to the absorber layer 5022 but fixed to the precast plate 542, and as a fixing means thereof, a fixing member (not shown) is generally fixed, but is not limited to this. However, any fixing means other than this can be adopted. The method of providing the surface layer 112 is the same as the method of providing the surface layer 11 on the outer side of the outer plate 2 in the first embodiment. Surface 11
The function and effect of 2 are the same as those of the surface layer 11 of the first embodiment.

The radio wave absorption panel 102 is installed outside the structural steel 9 of the building that reflects radio waves, and suppresses the reflection of radio waves from the outer wall by the same operation as in the first embodiment. Similar to the first embodiment, the radio wave absorption panel 102 for the glass curtain wall according to the present embodiment can prevent an increase in construction cost, can increase the degree of freedom in design design, and have a heat insulating and sound insulating effect. Can be large.

(Third Embodiment) FIG. 5 shows a third embodiment of the present invention.
FIG. 6 is a cross-sectional view showing the electric wave absorption panel 1 shown in FIG.
03 is an enlarged view, and FIG. 7 (the left side of the drawing is the inner side, the right side is the outer side). FIG.
It is an enlarged view of 43a. The same parts are designated by the same reference numerals as those in FIGS. 1 to 4, 20 and 21 described above.
In this embodiment, the absorber layer 5 of the radio wave absorption panel 1 of the first embodiment is changed. Radio wave absorber 30
3 has concave portions 303a shown in FIG. 7 on both side surfaces. A precast plate 543 made of concrete, which incorporates the reflection reinforcing bars 53 and structural reinforcing bars (not shown), has concave portions 543a on the outer surface and convex portions 543b on the outer surfaces at both ends in the vertical direction. The radio wave absorbers 303 are continuously arranged in the magnetic field direction of the incident radio wave (vertical direction of the paper surface of FIG. 6), and a predetermined interval is provided in the electric field direction (direction orthogonal to the paper surface of FIG. 6) (in the first embodiment, This is equivalent to repeating the arrangement of the radio wave absorber 3 at a predetermined GAP rate), and is arranged in the recess 543a such that the space is filled with concrete of the precast plate 543. In this case, it is preferable that the outer surface of the radio wave absorber 303 is aligned with the outer surface of the recess 543a. The surface layer 113 is provided outside the radio wave absorber 303 and the recess 543a. Normally, the surface layer 113 is provided on the entire surface outside the radio wave absorber 303 and the recess 543a, but it may be provided on a part of the surface instead of the entire surface. Further, the glass 8 is disposed on the outer side thereof with a gap therebetween, and the exterior material 51 is disposed on the convex portions 543b on the outer surfaces of the both ends in the vertical direction. The dimensions of the precast plate 543 and the exterior material 51 are appropriately set so that the surfaces of the upper and lower exterior materials 51 are aligned (the protrusions to the right in the drawing are the same). In this way, the radio wave absorber 30 is attached to the precast plate 543.
A radio wave absorption panel 103 for a glass curtain wall is configured in which 3, the surface layer 113, the glass 8 and the exterior material 51 are arranged and integrated. As described above, the space between the adjacent electromagnetic wave absorbers 303 has a precast plate 543.
Is filled with the concrete, and the filled concrete portion has the same function as that of the rib material 4 of the first embodiment. The width and thickness of the radio wave absorber 303 and the distance between the adjacent radio wave absorbers 303 are set to appropriate dimensions according to the characteristics of the radio wave to be taken. Further, the concrete filled in the space between the adjacent electromagnetic wave absorbers 303 and the side surface portions of the adjacent electromagnetic wave absorbers 303 at both ends in the width direction is not covered with the concave portions 303a on both side surfaces of the electromagnetic wave absorber 303.
Is also filled and the concrete and the recess 303a are engaged,
The effect of preventing the radio wave absorber from coming off is exhibited, and the radio wave absorber 303 is fixed to the precast plate 543. The fixing means of the exterior material 51 or the glass 8 to the precast plate 543 is the same as the fixing means of the exterior material 51 or the glass 8 to the precast plate 54 of the first embodiment. Surface 11
The method of providing 2 is the same as the method of providing the surface layer 11 on the outer side of the outer plate 2 in the first embodiment. The effects of the surface layer 112 are similar to those of the surface layer 11 of the first embodiment. And other than that, it is the same as that of the first embodiment.

The radio wave absorption panel 103 is installed outside the structural steel 9 of the building that reflects radio waves, and suppresses the reflection of radio waves from the outer wall by the same operation as in the first embodiment. Similar to the first embodiment, the radio wave absorption panel 103 for the glass curtain wall according to the present embodiment can prevent an increase in construction cost, can increase the degree of freedom in design design, and have a heat insulating and sound insulating effect. Can be large.

(Fourth Embodiment) FIG. 8 shows a fourth embodiment of the present invention.
FIG. 9 is a cross-sectional view showing the electric wave absorption panel 1 shown in FIG.
04 enlarged view, FIG. 10 (left side of drawing is inside, right is outside)
Is a first electromagnetic wave absorber 304, which will be described later in the EE cross section of FIG.
FIG. 6 is an enlarged view of a recess 544a. The same parts are designated by the same reference numerals as those in FIGS. 1 to 7, 20 and 21 described above. The present embodiment is the radio wave absorption panel 1 of the second embodiment.
02, the absorber layer 5021 is changed. The first radio wave absorber 304 has recesses 304a shown in FIG. 10 on both side surfaces. A precast concrete plate 544 made of concrete containing the reflection reinforcing bars 53 and structural reinforcing bars (not shown) is provided at two recesses 544 on the outer surface.
a, a convex portion 544b on the outer surface of both end portions in the vertical direction and a convex portion 544c on the intermediate portion. First radio wave absorber 30
4 are continuously arranged in the magnetic field direction of the incident radio wave (vertical direction of the paper surface of FIG. 9), and a predetermined interval is provided in the electric field direction (direction orthogonal to the paper surface of FIG. 9) (the radio wave absorber in the first embodiment). 3 is repeated at a predetermined GAP rate) and the precast plate 544 is arranged in the recess 544a so that the precast plate 544 is filled with concrete. In this case, it is preferable that the outer surface of the first radio wave absorber 304 is aligned with the outer surface of the recess 544a. First radio wave absorber 304 and recess 544a
A surface layer 114 is provided on the outside of the. Usually, the surface layer 114
Is provided on the entire surface outside the first radio wave absorber 304 and the concave portion 544a, but may be provided on a part of the surface instead of the entire surface. Further, a glass 802 is arranged on the outer side of the glass 802 with a gap therebetween. The exterior material 51 is disposed on the protrusions 544b at both ends. The second protrusion is formed on the protrusion 544c in the middle.
An absorber layer 5022 composed of the radio wave absorber 3022 and the second rib material 4022 which is a low dielectric material (GAP portion) is provided, and an exterior material 512 is provided outside the absorber layer 5022. The materials of the exterior materials 51 and 512 are the same as those of the exterior material 51 of the first embodiment. The material and structure of the absorber layer 5022 are the same as those of the absorber layer 5 of the first embodiment. In this way, the precast plate 544 is provided on the first radio wave absorber 304 and the absorber layer 502.
2, the surface layer 114, the exterior material 51, the exterior material 512, and the glass 802 are arranged and integrated to form the radio wave absorption panel 104 for the glass curtain wall. Exterior material 5
The dimensions of the precast plate 544, the absorber layer 5022, and the exterior materials 51 and 512 are appropriately set so that the surface of the outer packaging material 512 and the surface of the outer packaging material 512 are the same (the protrusion on the right side of the drawing is the same). Then, the width and thickness of the absorber layer 5022 are set to appropriate dimensions according to the characteristics of the radio wave to be taken. As described above, the space between the adjacent first radio wave absorbers 304 is filled with the concrete of the precast plate 544, and the filled concrete portion has the same function as the rib member 4 of the first embodiment. . The width and thickness of the first electromagnetic wave absorber 304 and the adjacent first electromagnetic wave absorber 30
The interval between the four is set to an appropriate dimension according to the characteristics of the radio wave to be taken. In addition, the adjacent first electromagnetic wave absorber 304
The concrete filled in the space between them and in the side surface portions of the first electromagnetic wave absorbers 304 that are not adjacent to each other in the width direction is also filled in the concave portions 304a on both side surfaces of the first electromagnetic wave absorber 304, and the concrete and the concave portions 304a. Engage with each other to exert an effect of preventing the electromagnetic wave absorbing material from coming out, and the first electromagnetic wave absorbing material 304 is fixed to the precast plate 544. The fixing means of the absorber layer 5022, the exterior material 51, the exterior material 512 or the glass 802 to the precast plate 544 is the absorber layer 5022, the exterior material 51, the exterior material 51 of the second embodiment.
This is the same as the means for fixing the 2 or glass 802 to the precast plate 542. The exterior material 512 is generally not fixed to the absorber layer 5022, but is fixed to the precast plate 542, and the fixing means is a fastener (not shown).
However, the present invention is not limited to this, and any fixing means other than this can be adopted. The method of providing the surface layer 114 is the same as the method of providing the surface layer 113 of the third embodiment. The function and effect of the surface layer 114 is the same as the surface layer 1 of the second embodiment.
Similar to 12. And other than that, it is the same as the second embodiment.

The radio wave absorption panel 104 is installed outside the structural steel 9 of the building that reflects radio waves, and suppresses the reflection of radio waves from the outer wall by the same operation as in the first embodiment. Similar to the first embodiment, the radio wave absorption panel 104 for the glass curtain wall of the present embodiment can prevent an increase in construction cost, can increase the degree of freedom in design design, and have a heat insulating and sound insulating effect. Can be large.

(Fifth Embodiment) FIG. 11 is a sectional view showing a fifth embodiment of the present invention, FIG. 12 is an enlarged view of a radio wave absorption panel 105 described later in FIG. 11, and FIG. The outer side) is an enlarged view of a later-described first electromagnetic wave absorber 304 and a recess 545a of the EE cross section of FIG. 12, and FIG. 14 (the left side of the drawing is the inner side, the right side is the outer side) is the FF cross section of FIG. It is an enlarged view of the 2nd radio wave absorber 305 and convex part 545c mentioned below.
The same parts are designated by the same reference numerals as those in FIGS. 1 to 10, 20 and 21 described above. In this embodiment, the absorber layer 502 in the radio wave absorption panel 104 of the fourth embodiment is used.
It is a modification of 2. The first radio wave absorber 304 has recesses 304a shown in FIG. 13 on both side surfaces. The second radio wave absorber 305 has concave portions 305a shown in FIG. 14 on both side surfaces. Concrete precast plate 5 with built-in reflective rebars 53 and structural rebars (not shown)
Reference numeral 45 designates two concave portions 545a on the outer surface, convex portions 545b on the outer surface at both end portions in the vertical direction, and convex portion 545c on the intermediate portion.
Equipped with. The first radio wave absorber 304 or the second radio wave absorber 305 is continuously arranged in the magnetic field direction of the incident radio wave (vertical direction of the paper surface of FIG. 12) and in the electric field direction (direction orthogonal to the paper surface of FIG. 12). A predetermined interval is provided (corresponding to repeating the arrangement of the radio wave absorber 3 in the first embodiment at a predetermined GAP rate), and the concave part 545a or the convex part is formed so that the interval is filled with the concrete of the precast plate 545. It is disposed in the portion 545c. In this case, the outer surface of the first radio wave absorber 304 is recessed 545a.
It is preferable that the outer surface of the second electromagnetic wave absorber 305 is aligned with the outer surface of the convex portion 545c. The surface layer 114 is provided outside the first radio wave absorber 304 and the recess 545a. Normally, the surface layer 114 is provided on the entire surface outside the first radio wave absorber 304 and the recess 545a, but it may be provided on a part of the surface instead of the entire surface. Further, a glass 802 is arranged on the outer side of the glass 802 with a gap therebetween.
The exterior material 512 is disposed outside the convex portion 545c. The exterior material 51 is disposed on the protrusions 545b at both ends. As described above, the space between the adjacent first electromagnetic wave absorbing materials 304 and the space between the adjacent second electromagnetic wave absorbing materials 305 are filled with the concrete of the precast plate 545, and the filled concrete is filled. The portion functions similarly to the rib material 4 of the first embodiment. The width and thickness of the first electromagnetic wave absorber 304 and the distance between the adjacent first electromagnetic wave absorbers 304, and the width and thickness of the second electromagnetic wave absorber 305 and the adjacent second electromagnetic wave absorber 305. The space between them should be set to an appropriate size according to the characteristics of the radio wave to be taken. Further, a space between adjacent first radio wave absorbers 304 and a space between adjacent second radio wave absorbers 305 (and the first radio wave absorbers 304 and the second radio wave absorbers at both ends in the width direction that are not adjacent to each other). The concrete filled in the side surface portion of the material 305 is also filled in the concave portions 304a on both side surfaces of the first electromagnetic wave absorber 304 and the concave portions 305a on both side surfaces of the second electromagnetic wave absorber 305 so that the concrete and the concave portions 304a, The recessed portion 305a is engaged with the recessed portion 305a to exert an effect of preventing the electromagnetic wave absorber from coming off to the outside.
4 and the second electromagnetic wave absorber 305 is the precast plate 54.
It is fixed to 5. The fixing means of the exterior material 51, the exterior material 512 or the glass 802 to the precast plate 545 is the exterior material 51, the exterior material 512 or the glass 8 of the second embodiment.
This is the same as the fixing means of 02 to the precast plate 542. The method of providing the surface layer 114 is the same as the surface layer 11 of the third embodiment.
The method is the same as that of the method of providing No. 3. The effects of the surface layer 114 are similar to those of the surface layer 112 of the second embodiment. The exception is the same as in the fourth embodiment, and in this manner, the first radio wave absorber 304, the second radio wave absorber 305, the exterior material 51, the exterior material 512, and the glass 802 are arranged on the precast plate 545. A radio wave absorption panel 105 for the glass curtain wall is installed and integrated.

The radio wave absorption panel 105 is installed outside the structural steel 9 of the building that reflects radio waves, and suppresses the reflection of radio waves from the outer wall by the same operation as in the first embodiment. Similar to the first embodiment, the radio wave absorption panel 105 for the glass curtain wall according to the present embodiment can prevent an increase in construction cost, can increase the degree of freedom in design design, and have a heat insulating and sound insulating effect. Can be large.

(Sixth Embodiment) FIG. 15 is a sectional view showing a sixth embodiment of the present invention, FIG. 16 is an enlarged view of a radio wave absorption panel 106 of FIG. 15 which will be described later, and FIG. 17 is a precast plate 546 of FIG. 16 which will be described later. FIG. 18 is an enlarged view of the convex portion 546b.
7 is a GG arrow view of FIG. The same parts are shown in FIG.
13 to 13, and the same reference numerals as those in FIG. 20 or FIG. In this embodiment, in the radio wave absorption panel 1 of the first embodiment, at least one convex portion 54 of the convex portions 546b outward of both upper and lower end portions (two portions) of the precast plate 546 is provided.
6b is a structural reinforcing bar 52 in which a cylindrical ferrite 13 to be described later is mounted. In FIG. 16, structural rebar 5
The reference numeral 2 indicates one provided on the upper convex portion 546b, and the other structural reinforcing bars 52 are not shown. Similarly, in FIG. 16, the cylindrical ferrite 13 has an upper convex portion 546b.
The lower convex portion 546b is shown in FIG.
The components arranged in the above are not shown. The sandwich body 7 is disposed in the recess 546a on the outer surface of the precast plate 546 made of concrete in which the reflective reinforcing bar 53 and the structural reinforcing bar 52 are built. A surface layer 11 is provided on the outside of the sandwich body 7. Normally, the surface layer 11 is provided on the entire outer surface of the sandwich 7, but it may be provided on a part of the surface instead of the entire surface. Further, the glass 8 is disposed on the outer side of the precast plate 54 with a space therebetween, and the exterior material 51 is disposed on the outward convex portions 54b of the upper and lower end portions of the precast plate 54. The sandwich body 7, the surface layer 11, the glass 8 or the exterior material 51 has the same material and configuration as the sandwich body 7, the surface layer 11, the glass 8 or the exterior material 5 of the first embodiment.
The same as 1. The means for fixing the sandwich body 7, the glass 8 or the exterior material 51 to the precast plate 546 is the same as the means for fixing the sandwich body 7, the glass 8 or the exterior material 51 to the precast plate 54 of the first embodiment. The method provided with the surface layer 11 or the effect of the surface layer 11 is as follows.
It is similar to the first embodiment. As shown in FIG. 17, a cylindrical ferrite 13 is annularly mounted on a portion of the structural rebar 52 embedded in the precast plate 546, which is embedded in the convex portion 546b in the electric field direction (direction orthogonal to the paper surface of FIG. 17). ing. The tubular ferrite 13 suppresses the reflection of radio waves from the structural rebar 52. Note that FIG. 17 shows the upper convex portion 546b.
However, the same applies to the lower convex portion 546b.
In the present embodiment, a reinforcing bar having a diameter of 6 mm is used for the structural reinforcing bar 52, a cylindrical ferrite 13 having an outer diameter of 25 mm, an inner diameter of 6.1 mm, and a length of 40 mm is used. The mounting pitch of the tubular ferrite 13 was set to 80 to 120 mm. The dimension is not limited to this, and is appropriately determined depending on the desired electromagnetic wave absorption characteristics. Further, the arrangement and quantity of the structural reinforcing bars 52 or the tubular ferrites 13 are not limited to those shown in the present embodiment, and may be appropriately determined depending on desired structural characteristics and electromagnetic wave absorption characteristics. In this embodiment, both the upper and lower protrusions 5
Although the cylindrical ferrite 13 is attached to the structural reinforcing bar 52 of 46b, only one of the upper and lower convex portions 546b is provided.
The cylindrical ferrite 13 may be attached to the structural rebar 52 of FIG. Then, with the exception of this, the radio wave absorption panel 106 is configured similarly to the first embodiment.

The radio wave absorption panel 106 is installed outside the structural steel 9 of the building that reflects radio waves, and suppresses the reflection of radio waves from the outer wall by the same operation as in the first embodiment. Similar to the first embodiment, the radio wave absorption panel 106 for the glass curtain wall of the present embodiment can prevent an increase in construction cost, can increase the degree of freedom in design design, and have a heat insulating and sound insulating effect. Can be large.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments. The dimensions and shapes described in the embodiments are not limited to this, and may be optimal dimensions and shapes in consideration of functions, productivity, and the like. For example, the cross-sectional shape described in the embodiment is
It goes without saying that various shapes suitable for building members can be used. Further, the following modifications are possible. (1) In the first, second, or sixth embodiment, the outer layer 2 or the outer plate 202 is provided with the surface layer 11 or the outer layer 112. However, when the heat insulating property against the outside air temperature is not required, the surface layer 11 is used. Alternatively, the surface layer 112 may not be provided. (2) In the third to fifth embodiments, the surface layer 113 or the outside of the radio wave absorber 303 and the recess 543a, the outside of the first radio wave absorber 304 and the recess 544a, or the outside of the first radio wave absorber 304 and the recess 545a. Surface 11
4 is provided, but the surface layer 113 or the surface layer 114 may not be provided if heat insulation with respect to the outside air temperature is not required. If the surface layer 114 is not provided, coating or coating may be performed on the outside of the electromagnetic wave absorber 303 and the recess 543a, the outside of the first electromagnetic wave absorber 304 and the recess 544a, or the outside of the first electromagnetic wave absorber 304 and the recess 545a as necessary. Surface treatment such as coating may be applied. (3) In the embodiment, the precast plate has a built-in reflection reinforcing bar, but a metal reflection plate may be arranged inside the radio wave absorber. Alternatively, the reflective reinforcing bar and the reflective plate may be used together. (4) In the first embodiment, the surfaces of the upper and lower exterior materials 51 are aligned (the protrusions to the right in the drawing on the right side of the drawing are the same), but the upper and lower exterior materials are arranged (for example, depending on the design design). The surfaces of the material 51 may not be aligned. In the second embodiment, the surfaces of the exterior material 51 and the exterior material 512 are aligned (the protrusions on the right side of the drawing are the same), but depending on the design design, the exterior material 51 and the exterior material 512 may be arranged. The surfaces do not have to be aligned. (5) In the first embodiment, the radio wave absorption panel is vertically symmetrical, but it may be vertically asymmetrical. (6) In the embodiment, the exterior material 51 is provided on the outward convex portions of the upper and lower end portions of the precast plate, but at least a part of the outward convex portions of the upper and lower end portions of the precast plate is the exterior. The precast plate may be exposed (the surface treatment such as painting and coating may be performed if necessary) without disposing the material 51. Further, it is not necessary that the upward and downward sizes of the convex portions outward of the upper and lower end portions of the precast plate are the same. (7) In the second to fifth embodiments, the structural ferrite bars 52 of at least one convex part of the outward convex parts at the upper and lower ends (two positions) of the precast plate are provided on the tubular ferrite 13 similar to that of the sixth embodiment. May be wrapped around. (8) In the first to fifth embodiments, at least one convex portion of the convex portions outward of both upper and lower ends (two locations) of the precast plate is provided between the outer surface of the convex portion and the exterior material 51. An absorber layer having a structure similar to that of the absorber layer 5022 of Embodiment 2 may be sandwiched. (9) In the first to fifth embodiments, the second radio wave of the fifth embodiment is formed on the outer surface of the convex portion in at least one convex portion of the convex portions outward of both upper and lower ends (two locations) of the precast plate. Similar to the absorber 305, radio wave absorbers having recesses on both sides are arranged, and a space between adjacent radio wave absorbers is filled with concrete of a precast plate so that the radio wave absorber is engaged with the concrete. (That is, similar to the case where the second radio wave absorber 305 of the fifth embodiment is provided outside the convex portion 545c), the exterior material 51 is provided outside the radio wave absorber and concrete. good. (10) In the second embodiment, the precast plate 542
Two concave portions 542a and one intermediate convex portion 542c were formed on the outer surface of the, but the number of the concave portions 542a and the intermediate convex portion 542c was increased by N (N is an integer). Correspondingly, the number of the first wave absorber and the number of the second wave absorber may be increased by N. For example, the recess 542
a may be three and the intermediate convex portion 542c may be two, or the concave portion 542a may be four and the intermediate convex portion 5 may be four.
42c may be three places. (11) In the embodiment, the ferrite plate is used as the radio wave absorbing material, but the present invention is not limited to this, and any material having a radio wave absorbing function may be used. For example, resin or rubber containing magnetic powder may be used. Is also good. (12) In the third to fifth embodiments, the electromagnetic wave absorber 30 is used.
3, first electromagnetic wave absorber 304, second electromagnetic wave absorber 305
Has a substantially I-shaped cross-section with recesses on both sides,
The present invention is not limited to this, and can have various cross-sectional shapes as shown in (a) to (d) of FIG. 19 (the left side of the drawing is the inside and the right side is the outside). In Embodiments 3 to 5 or FIG. 19, the shape is symmetrical in the width direction (vertical direction in the plane of the drawing), but may be asymmetric. Further, the cross-sectional shape other than these may be used, and all the cross-sectional shapes having the effect of preventing the radio wave absorber from coming off by engaging the precast plate with concrete can be obtained. Further, these cross-sectional shapes do not have to be formed continuously over the entire length in the up-down direction of the electromagnetic wave absorber that engages with the precast plate, and the engagement of the precast plate with concrete prevents the electromagnetic wave absorber from being exposed to the outside. It may be formed in a range (length in the vertical direction) required to have a retaining effect. (13) In Embodiments 3 to 5, the electromagnetic wave absorber having a shape that engages with the precast plate is arranged on the entire surface of the convex portion or the concave portion on the outer surface of the precast plate. The rest of the surface (where it is not provided) is provided with an absorber layer composed of a radio wave absorber and a rib material that is a low dielectric (GAP portion). It may be arranged (that is, the radio wave absorber having a shape that engages with the precast plate and the absorber layer made of the radio wave absorber and the rib material are used together). (14) In the embodiment, the precast plate is made of concrete, but the precast plate is not limited to this, and other ceramic products, resins, or the like may be used.

In the present invention, the combination of the above modifications or the combination of the embodiment and the modifications can be arbitrarily performed.

[0023]

According to the present invention, it is possible to provide a radio wave absorbing panel for a glass curtain wall, in which the workability and workability are improved while maintaining the radio wave absorbing performance, and an increase in construction cost is prevented.

[Brief description of drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention.

FIG. 2 is an enlarged view of the radio wave absorption panel 1 of FIG.

FIG. 3 is a cross-sectional view showing a second embodiment of the present invention.

4 is an enlarged view of the radio wave absorption panel 102 of FIG.

FIG. 5 is a sectional view showing a third embodiment of the present invention.

6 is an enlarged view of the radio wave absorption panel 103 of FIG.

7 is an enlarged view of the electromagnetic wave absorber 303 taken along the line EE in FIG.

FIG. 8 is a sectional view showing Embodiment 4 of the present invention.

9 is an enlarged view of the radio wave absorption panel 104 of FIG.

FIG. 10 is a first electromagnetic wave absorber 30 taken along the line EE in FIG.
4 is an enlarged view of FIG.

FIG. 11 is a sectional view showing Embodiment 5 of the present invention.

12 is an enlarged view of the radio wave absorption panel 105 of FIG.

FIG. 13 is a first electromagnetic wave absorber 3 taken along the line EE in FIG.
It is an enlarged view of 04.

FIG. 14 is a second electromagnetic wave absorber 3 taken along the line FF in FIG.
05 is an enlarged view of the convex portion 545c.

FIG. 15 is a sectional view showing Embodiment 6 of the present invention.

16 is an enlarged view of the radio wave absorption panel 106 of FIG.

FIG. 17 is a projection 54b of the precast plate 54 shown in FIG.
FIG.

FIG. 18 is a view taken along the line GG in FIG.

FIG. 19 is a view showing a modification of the cross-sectional shape of the electromagnetic wave absorber that engages with the precast plate.

FIG. 20 is a cross-sectional view showing an example of a conventional radio wave absorption panel.

FIG. 21 is a cross-sectional view showing a glass curtain wall in which a conventional radio wave absorption panel is used.

[Explanation of symbols]

1, 101, 102, 103, 104, 105, 10
6,109 radio wave absorbing panel 2,202 outer plate 3,303 radio wave absorbing material 3021,304 first radio wave absorbing material 3022,305 second radio wave absorbing material 303a, 304a, 305a concave portion 4,4021,4022 rib material 5, 5021, 5022 Absorber layer 6,602 Inner plate 7,702 Sandwich body 8,802 Glass 9 Structural steel 10 Window glass 11, 112, 113, 114 Surface layer 13 Cylindrical ferrite 51, 512 Exterior material 52 Structural rebar 53 Reflective rebar 54 , 542, 543, 544, 545, 546 Precast plates 54a, 542a, 543a, 544a, 545a, 5
46a Recesses 54b, 542b, 543b, 544b, 545b, 5
46b, 542c, 544c, 545c Convex portion 91 Reflective plate 92 Aluminum sash 93 Radio wave absorption panel support material

Continued front page    (72) Inventor Yoshiyuki Moriyama             2977 Tahira, Yoshii-cho, Tano-gun, Gunma Prefecture Hitachi Kin             Within Genki Kiko Co., Ltd. F-term (reference) 2E001 DH01 FA04 FA09 GA77 HA04                       HA11 HA14 HA20 HA21 HB02                       LA01                 2E002 NA01 NB02 NB06                 2E162 CA00 CA11 CA24                 5E321 AA44 BB22 BB51 CC22 GG11

Claims (2)

[Claims] 1. A radio wave absorption panel characterized in that a radio wave absorber is provided on a part of the outside of a precast plate, and glass is provided on the outside of the radio wave absorber. 2. A first electromagnetic wave absorber is disposed on a part of the outside of the precast plate, glass is disposed on the outside of the first electromagnetic wave absorber, and the first electromagnetic wave absorber is disposed on the outside. A radio wave absorption panel, wherein a second radio wave absorber is provided on at least a part of the outside of the precast plate not provided, and an exterior material is provided on the outside of the second radio wave absorber.