JPH0220895A - Filter with earth terminal - Google Patents

Abstract

PURPOSE:To remove a substance from a fluorescent surface which is harmful to a human body and exerts adverse influence upon an integrated circuit at low cost by charging a transparent conductive substance, or liquid or jellylike substance which hardly transmits X rays, etc., in a transparent plastic hollow container and providing a terminal while bringing an electrode into contact with the substance. CONSTITUTION:A lenticular molding plate 2 is adhered to the reverse side of a plane plate 1 whose upper part is bent and the liquid or jellylike substance 2 is charged while the terminal 4 is fitted. The liquid or jellylike substance 3 which is charged therein is conductive and this is grounded to reduce an electromagnetic wave, static electricity, etc., appearing on the front surface of a cathode-ray tube, thereby suppressing influence upon the integrated circuit. Further, a material which cuts off radiation such as X rays is charged and dissolved without decreasing the transparency because said substance is liquid or jellylike. Thus, effective performance is obtained at low cost.

Description

[Detailed Description of the Invention] (a) Purpose of the Invention Cathode-ray tube displays, which are currently used in computers and word processors, project characters or screens by shining high-energy electron beams onto a fluorescent screen using an electron gun inside a cathode ray tube. ing. From the fluorescent screen on that T-knot,
They emit things that are harmful to the human body, such as radiation, ultraviolet rays, electromagnetic waves, and static electricity, and things that can have a negative impact on integrated circuits.

The present invention is a filter aimed at removing or reducing these things.

(b) Conventional technology and its problems Various products made of flat plastic, etc., which are installed in front of cathode ray tubes, are on the market to reduce the above-mentioned problems, but they do not allow high-energy radiation such as X-rays. It would be very expensive to effectively incorporate components that reduce the In addition, a fine net is sometimes placed in the first frame to shield electromagnetic waves and static electricity, but this has the disadvantage of reducing transparency and image quality.

This invention aims to provide effective performance at low cost.

I/Atsushi Structure of the invention 1 in Fig. 1 is a flat plate with the upper part bent.

It has a structure in which a lens-shaped molded plate (■) is glued to the back side, a terminal (■) is attached, and a liquid or jelly-like substance (■) is placed inside and sealed.

Figure 2 shows the structure of the terminal part, and ■ is a hole for liquid. (2) is filled with a liquid or jelly-like substance inside the terminal plate (2), and after pouring the liquid, etc. through the hole (2), apply a sealant, and then insert the (3) screw (3) through the terminal plate (3) and tighten it. The terminal plate is a type with a lead wire attached later for grounding. Note that at this time, the tip of the screw is in contact with the liquid inside.

FIG. 3 is a side view of the product of the present invention, and ■ is a display using a cathode ray tube. ■ is a tape that allows you to easily attach and detach this product.

(2) The liquid or jelly-like substance sealed in the invention is electrically conductive, and in order to ground it, electromagnetic waves coming out from the front of the cathode ray tube and static electricity are reduced, suppressing the influence on integrated circuits. I can do it. It also contains a substance that stops radiation such as X-rays. Since the substance is in liquid or jelly form, it can be dissolved and added without reducing its transparency.

As mentioned above, liquid or jelly-like substances are placed in a hollow container, and since the substance that produces the effect can be easily dissolved and sealed inside these containers, the product can be manufactured at low cost. can be supplied.

[Brief explanation of the drawing]

FIG. 1 is a front view, side view, and top view of the present invention. Figure 2 is a detailed view of the ground terminal, the left is a front view, and the right is a side view. FIG. 3 is a side view of the product of the present invention when used.

Claims (1)

[Claims] A liquid or jelly-like substance that is transparent, conductive, or difficult for X-rays to pass through is sealed in a hollow, flat or lens-shaped transparent plastic container. This filter has a structure in which an electrode is brought into contact with this material to create a terminal, and this terminal is grounded with a lead wire.