JP2847771B2 - Unwanted radiation prevention method - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an unnecessary radiation of a computer device having a display unit integrated therein, particularly a computer device having a display unit rotatably mounted on a main body unit accommodating a main circuit board. And a method for reducing the amount.

2. Description of the Related Art Conventionally, for electrical connection between a display unit and a main unit of this type of device, for example, as shown in FIG. 3, the display unit 1 and the main unit 3 are grounded by twisting several copper wires. How to connect with line 5,
The ground contact 2a and the ground leaf spring 6 which rotate as shown in FIG.
However, these methods cannot sufficiently reduce the high-frequency impedance between the two blocks.

Problems to be Solved by the Invention In the conventional method, the effect of preventing unnecessary radiation is often not sufficient, and this is also a cause of an increase in structure. The connection between the display unit and the block of the main unit so as to reduce the high-frequency impedance has been a major structural problem.

Means for Solving the Problems In order to solve the above problems, the present invention uses a thin sheet-shaped conductor in order to obtain a conductor that is flexible and has a large surface area, causes high-frequency impedance, and causes unnecessary radiation. It connects two blocks.

As one of the conductors, a conductive cloth obtained by metal-treating the surface of a cloth woven with fibers is used.

Operation With the above-described configuration, the present invention can be structurally housed in a small space, and can obtain a wide connection structure for obtaining a large unnecessary radiation prevention effect.

Embodiment FIGS. 1 and 2 show an embodiment in which a main body and a display according to the present invention are connected by using a conductive cloth.

FIG. 1 shows the display section and the main body section a little apart for convenience of explanation, and FIG. 2 shows a schematic view of the movable section.

In FIG. 2, the display unit 1 has a structure rotatable by an angle θ from a position A to a position B.

1a shows that the display unit 1 and 3b are the electrical grounds of the main unit 3.

The conductive cloth 7 is a thin, flexible and wide sheet of a thin film whose surface is metal-plated and subjected to an electrical conduction treatment, and is electrically connected to the ground 1a of the display unit 1 and the ground 3b of the main unit 3.

The width b of the conductive cloth 7 is a factor that greatly affects the effect of preventing unnecessary radiation, but has a structure in which a sufficiently large width can be adopted.

In the present invention, an electrical resistance value of 0.3 Ω / cm, a thickness of 0.15 mm, and a width of 150 mm, which is a silver-plated nylon woven cloth, is used, but a large unnecessary radiation preventing effect can be obtained.
Because of its high flexibility, the structure of the display unit and the connection unit of the main unit can be stored in a small space.

In the present invention, a metal-plated conductive cloth is used as a conductor for connecting the display unit 1 and the main body 3, but the conductive cloth is not limited to a conductive cloth as long as it is a flexible thin plate-shaped conductor.

According to the present invention, the connection between the electric ground of the display unit and the electric ground of the main unit is connected by a wide conductor, so that the high frequency between the blocks can be reduced, and a large unnecessary radiation preventing effect can be obtained. Can be obtained.

In addition, since it is plate-shaped and has high flexibility, it can be stored in a narrow gap, and the size and dimensions of the device can be reduced.

[Brief description of the drawings]

FIG. 1 is a diagram showing a display unit of a computer device according to an embodiment of the present invention at a distance from the main unit, FIG. 2 is a schematic diagram of a movable unit between the display unit and the main unit of the computer device in the embodiment, FIG. 3 is a diagram in which a display unit of a computer device according to a conventional example is displayed slightly away from a main body unit. 2 ... rotating shaft, 4 ... signal line, 7 ... conductive cloth.

──────────────────────────────────────────────────の Continued on the front page (72) Inventor Tsuneo Ishii 1006 Kazuma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (72) Inventor Toshiaki Nakamatsu 1006 Kadoma, Kazuma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-62-182821 (JP, A) (58) Fields investigated (Int. . ^6, DB name) G06F 1/16 G06F 15/02 301

Claims (1)

(57) [Claims] A small computer device having a main body for accommodating a main circuit board and the like, and a display rotatably mounted on the main body, wherein the display and the main body are made of metal on the surface. A method for preventing unnecessary radiation, characterized in that the connection is made with a woven fabric that has been subjected to an electrical conductive treatment by plating or the like.