JP2585413Y2 - Radio wave reflection wall - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio wave reflecting wall suitable for preventing a radio wave obstruction such as a television wave on the ground from being caused by a high-rise building or the like.

[0002]

2. Description of the Related Art As a conventional technique for preventing a radio wave disturbance such as a television wave caused by a high-rise building or the like, there is one disclosed in, for example, Japanese Patent Application Laid-Open No. 1-321698 which was previously proposed by the present applicant. That is, such a conventional technique relates to a radio wave reflection device provided on an outer wall of a building, in which a large number of radio wave reflection blinds formed by arranging a plurality of metal rods in an interdigital shape have their surfaces directed obliquely upward. It is characterized in that it is placed in a state and installed vertically in steps along the building surface.

With such a structure, radio waves arriving from the outside on the outer wall of the building are reflected toward the sky on the radio-reflecting blind surface, thereby contributing to the prevention of the occurrence of radio interference such as television radio waves on the ground. be able to. Also,
Since each radio wave reflection blind is formed by arranging metal rods in an interdigitated shape, it is possible to sufficiently secure visibility and sunlight from the building to the outside.

[0004]

Indeed, according to the above-mentioned conventional technique, various effects can be obtained, such as helping to prevent the occurrence of radio interference such as television radio waves on the ground.
Since the radio wave reflection blind separate from the building is mounted on the outer wall of the building, there is a disadvantage that the mounting operation is required separately from the building of the building itself. Moreover, as a result of mounting a large number of radio wave reflection blinds on the outer wall of the building, there is a problem that the appearance of the building is impaired.

As a measure to cope with such a drawback, it is conceivable to cover the outer wall surface of the building with a radio wave absorbing material such as a ferrite tile. However, such a material is generally expensive, and furthermore, it is difficult to prevent radio interference. In order to eliminate it, a thicker ferrite tile is required, resulting in a problem that the cost is very high. The present invention
The present invention has been made in view of the problems to be solved by the conventional technology, and an object thereof is to provide a radio wave reflection wall which can save installation time and does not impair the appearance of a building. .

[0006]

In order to achieve the above object, the radio wave reflecting wall according to the first aspect of the present invention is arranged in a longitudinal direction among the reinforcing bars forming the reinforced concrete structure wall.
The reinforcing steel to be installed must be
From the outside toward the outside.
Fix multiple support muscles, and to those multiple support muscles,
By supporting multiple rebars arranged in the lateral direction
Ri, external side of the normal line of the surface to be shaped by a plurality of reinforcing bars disposed in their lateral direction the reinforced concrete structural wall
It is obtained by the facing obliquely upward of.

According to a second aspect of the present invention, in the first aspect, the surface of the reinforced concrete structure wall is covered with a ferrite layer.

[0008]

According to the first aspect of the present invention, when a radio wave arrives at the radio wave reflecting wall, among the reinforcing bars forming the radio wave reflecting wall, which is a reinforced concrete structure wall, a plurality of reinforcing bars arranged in a lateral direction are provided. Reflected toward the sky. Further, since the reinforcing bars used for the radio wave reflecting action are indispensable members for the reinforced concrete structure wall, by providing the reinforced concrete structure wall with the radio wave reflecting action, the labor and the cost do not increase significantly. Moreover, since the reinforcing bars are covered with concrete and are not exposed to the outside, even if this radio wave reflecting wall is used as a wall of a building, the appearance of the building is not particularly impaired.

According to the second aspect of the present invention, the radio waves that cannot be absorbed by the ferrite layer covering the surface of the reinforced concrete structure wall are scattered in the sky by the reinforcing bars arranged laterally in the reinforced concrete structure wall. It will be reflected toward.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show an embodiment of the present invention. First, the configuration will be described. FIG. 1 is a front view of the entire reinforcing bar 1 disposed inside a reinforced concrete structure wall.
An example of a so-called armored arrangement in which a large number of vertical wall bars 2 and a large number of horizontal wall bars 3 are arranged in a grid is shown. However, the portion to be a window is not provided with an opening 1a and the opening 1a is provided.
Opening reinforcing bars 4 are arranged outside the four corners of a.

FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1. At the same time, the entire reinforced concrete structure wall 5 is indicated by a one-dot chain line. That is, as can be seen from FIG. 2, the reinforcing bar 1 is not a planar structure, but has a three-dimensional structure in which the wall longitudinal bars 2 are double-laid in the thickness direction. A number of horizontal wall streaks 3 are arranged in the space.

[0012] Of the lateral wall reinforcements 3 arranged in the lateral direction, those excluding the upper and lower end portions of the reinforcing bar 1 and the lateral wall reinforcements 3 arranged adjacent to the opening 1a constitute a set (book). In the embodiment, a set of five) a normal vector (a vector pointing in a direction perpendicular to the plane) N of a plane formed by the horizontal wall streaks 3, ..., 3 is disposed so as to face diagonally upward on the outer side. I have. In addition, at several places in the longitudinal direction of the lateral wall streaks 3 , supporting muscles 6 for supporting the lateral wall streaks 3 are arranged. Specifically, each branch
Retaining bars 6 extend from the inside of reinforced concrete structure wall 5 to the outside.
Become diagonally downward toward the side
In addition, its end is fixed to the vertical wall 2 of the wall,
The transverse wall 3 is supported by the muscle 6.

Here, a round bar having a diameter of about 10 mm is used as the vertical wall 2 and a round bar having a diameter of about 10 to 13 mm is used as the horizontal wall 3. When the inclination angle of the plane formed by the horizontal wall stripes 3,... 3 with respect to the vertical plane is θ, and the distance between the horizontal wall stripes 3,. The distance a between the horizontal stripes 3,..., 3 is as follows: a = b × cos θ (1), and between the distance a and the wavelength λ of the radio wave to be reflected, a≪λ (2) The inclination angle θ and the interval b are set so as to satisfy the relationship. The dimensions of the vertical wall 2 and horizontal wall 3, the inclination angle θ, the interval b, and the like, and the number of horizontal wall 3 forming one plane, etc., depend on the wavelength λ of the radio wave to be reflected and other conditions. It is set appropriately.

Next, the operation and effect of this embodiment will be described. That is, since the set of the plurality of horizontal wall bars 3,..., 3 are arranged as described above, if this reinforced concrete structure wall 5 is used as the outer wall of a high-rise building, the television coming from outside to the building will be described. For radio waves and the like, this is equivalent to the presence of a plurality of radio wave reflection surfaces F that face obliquely upward in the reinforced concrete structure wall 5 as shown in FIG.

Therefore, radio waves arriving from the outside on the outer surface of the building are reflected toward the sky by the reinforced concrete structure wall 5, thereby effectively preventing the building from causing radio wave interference such as TV radio waves on the ground. Can be prevented. In addition, since radio waves are prevented from entering the interior of the building, it is also effective in preventing radio interference inside the building.

.., 3 constituting the radio wave reflection surface F are also essential components of the reinforced concrete structure wall 5 at the same time, so that the number thereof may be increased as compared with a simple reinforced concrete structure wall. There is no inconvenience that the labor and cost of manufacturing are significantly increased. In particular, in the case of a PC (precast concrete) structure, the labor at the site is exactly the same as when a simple reinforced concrete structure wall is used, and therefore, there is an advantage that the radio wave reflection effect can be obtained without increasing the labor at the site. is there.

Moreover, since the horizontal wall streaks 3,..., 3 are not exposed to the outside, even if the reinforced concrete structure wall 5 of this embodiment is used for the outer wall, the appearance of the building may be particularly impaired. Absent. Further, as shown in FIG.
It is preferable that the surface of the reinforced concrete structure wall 5 be a ferrite layer 7 by covering it with a ferrite tile or the like. This is because a radio wave arriving from the outside is absorbed by the ferrite layer 7, and the portion that could not be absorbed by the ferrite layer 7 is reflected by the horizontal wall stripes 3,. Because you can.

[0018] Even in the case of such a configuration,
Compared with the conventional configuration in which a radio wave countermeasure is performed using only a ferrite tile, a thin ferrite layer 7 is sufficient, which is very advantageous in terms of cost. Further, the configuration as in the present embodiment is further provided.
If it is formed, there is no need to arrange the wall vertical streaks 2 diagonally.
From the vertical direction of the reinforced concrete structure wall 5
There is no fear of lowering the strength. In addition, rebar 1
Is not limited to the armored arrangement as in the above embodiment, but may be any other structure. In short, the present invention can be applied to a reinforcing bar having a structure in which the lateral reinforcing bars 3 arranged in the horizontal direction exist.

The surface formed by the horizontal wall stripes 3,..., 3 is not limited to a flat surface, but may be a curved surface.

[0020]

[Effects of the Invention] As described above, according to the present invention,
Of the reinforcing bars that form the reinforced concrete structure wall, the structure is used to reflect radio waves using multiple reinforcing bars that are arranged in the horizontal direction, so there is no problem that the labor and cost of manufacturing are significantly increased and the appearance is impaired Can effectively prevent the occurrence of radio wave interference such as TV radio waves ,
Because it is a configuration that uses support muscles,
Reduced vertical tensile strength of cleat structure walls
There is an effect that there is no concern to make it happen .

[Brief description of the drawings]

FIG. 1 is a front view showing a structure of a reinforcing bar according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a perspective view conceptually showing the configuration of the present embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Reinforcing bar 2 Wall vertical bar 3 Wall horizontal bar 4 Reinforcing bar 5 Reinforced concrete structure wall 6 Support bar 7 Ferrite layer N normal vector

Claims (2)

(57) [Scope of request for utility model registration] 1. A reinforcing bar which is provided in a longitudinal direction among reinforcing bars forming a reinforced concrete structure wall.
Diagonally downward from the inside to the outside of the wall
Fix multiple support muscles so that they are facing
A plurality of rebars arranged in the lateral direction are attached to these
By supporting them, a plurality of
Normals said reinforced concrete surface to be shaped by rebar
A radio wave reflection wall characterized in that it faces obliquely upward on the outer side of the heat -treating structure wall. 2. The radio wave reflecting wall according to claim 1, wherein the surface of the reinforced concrete structure wall is covered with a ferrite layer.