JPH0440318Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to an anechoic chamber.

(Problems to be solved by conventional techniques and ideas) Conventionally, lighting fixtures for anechoic chambers have been attached to the ceiling or floor. Since this installation was done so that the lighting equipment was exposed, it had the disadvantage that radio waves were reflected by the exposed lighting equipment and had an undesirable effect on the anechoic chamber.

Therefore, the present invention has been made to solve the drawbacks of the prior art, and aims to provide an anechoic chamber that can prevent reflection of radio waves and has an excellent design.

(Means for Solving the Problems) In order to achieve the above object, the anechoic chamber of the present invention has radio wave absorbers in each corner of the anechoic chamber in which radio wave absorbers are provided on the walls, ceiling, etc. A thin columnar L-shaped radio wave absorber placed in the space created by removing the body from the floor to the ceiling, and a plate-shaped white flame-retardant Styrofoam glued onto the L-shaped radio wave absorber. A plurality of triangular white flame-retardant styrofoam stands were attached to the corners made of the white flame-retardant styrofoam material, and an incandescent bulb such as a halogen light was used on each stand. The space is made as narrow as possible by installing the lighting equipment one step deeper than the surrounding radio wave absorber and installing a white flame-retardant polystyrene foam material that reflects the light on the path of the light emitted from the lighting equipment. There are characteristics.

(Function) According to the present invention, since the lighting equipment is installed in the space formed by removing the radio wave absorber at the corner of the anechoic chamber, it is possible to prevent the reflection of radio waves by the lighting equipment and illuminate the anechoic room. Become so.
In addition, the flame-retardant styrofoam material provided around the space where the lighting equipment is installed reflects light well and prevents the negative effects of the heat generated by the lighting equipment. Therefore, the problems of the prior art described above can be solved.

(Example) An example of the present invention will be described below based on the drawings.

FIG. 1A is a top view of the corner of the anechoic chamber before the lighting device of the present invention is installed, and FIG. 2A is a perspective view thereof. On the other hand, FIG. 1B is a top view of the corner of the anechoic chamber to which the lighting device of the present invention is installed, and FIG. 2B is a perspective view thereof.

In general, an anechoic chamber is constructed by having a large number of radio wave absorber blocks 2 attached to a wall 1 or ceiling, as shown in FIGS. 1A and 2A, for example. 1
Each radio wave absorber block 2 is shaped like a rectangular parallelepiped base with a plurality of substantially triangular prism-shaped roof-shaped parts arranged side by side. This radio wave absorber block 2
In one example, the base is a square with sides of 60 cm. The radio wave absorber blocks 2 are arranged alternately vertically and horizontally so that the directions of the ridges of adjacent blocks are perpendicular to each other. Note that a columnar radio wave absorber 3 is attached to a corner portion of the radio anechoic chamber.

In this embodiment, a space 5 as shown in FIGS. 1B and 2B is formed in a corner of such an anechoic chamber, and a lighting fixture 6 is installed. This lighting equipment 6
The installation is carried out by applying a flame-retardant polystyrene foam material 7 to the surface of the radio wave absorber 3 around the space 5 and the radio wave absorber block 2 in the vicinity thereof, and further attaching a base 8 made of polystyrene foam. By using a flame-retardant material as the polystyrene foam material 7, the space 5 can be made as narrow as possible and the influence of heat generated by the lighting equipment 6 can be prevented. Further, the color of the foamed polystyrene material 7 is preferably white in order to reflect light well. As the lighting equipment 6, one using an incandescent bulb such as a halogen light can be used. The lighting equipment 6 may be installed only at one location, or multiple lighting equipment 6 may be installed at predetermined intervals as desired.

In the above example, the radio wave absorber at the corner of the anechoic chamber was removed and the lighting device was installed, but if the influence of reflection from the lighting equipment is small, the radio wave absorber at the corner is not removed as shown in Figure 3. It is also possible to attach lighting equipment to the

(Effects of the invention) As explained in detail above, according to the invention,
This has the advantage of effectively preventing radio waves from being reflected by lighting equipment in an anechoic chamber. Furthermore, the present invention utilizes the corners of the anechoic chamber to install the lighting device, resulting in an excellent design.

[Brief explanation of drawings]

Figures 1A and B are top views of the corners of the anechoic chamber before and after the installation of the lighting device of the present invention, respectively, and Figures 2A and B are views of the corners of Figures 1A and B, respectively. The perspective view and FIG. 3 are diagrams showing a configuration in which a lighting fixture is attached without removing the radio wave absorber at the corner of the anechoic chamber. 1...Wall of the anechoic chamber, 2...Radio wave absorber block, 3...Column-shaped radio wave absorber, 4...Floor of the anechoic chamber, 5...Space, 6...Lighting equipment, 7...Flame retardant Styrofoam material, 8... Styrofoam stand.

Claims (1)

[Scope of Claim for Utility Model Registration] In an anechoic chamber in which radio wave absorbers are installed on the walls, ceiling, etc., a space formed by removing the radio wave absorbers from each corner of the anechoic chamber from the floor to the ceiling. It has a thin columnar L-shaped radio wave absorber arranged and a plate-shaped white flame-retardant Styrofoam material adhered to the L-shaped radio wave absorber, and is made of the white flame-retardant Styrofoam material. Attach multiple triangular white flame-retardant styrofoam stands to the corners of the area, and install lighting equipment using incandescent bulbs such as halogen lights on each stand, one level deeper than the surrounding radio wave absorber. A radio anechoic chamber characterized in that a white flame-retardant polystyrene foam material that reflects light is attached to the path of light emitted from the lighting equipment, and the space is made as narrow as possible.