CN2259038Y

CN2259038Y - Electromagnetic field protection device

Info

Publication number: CN2259038Y
Application number: CN96227285U
Authority: CN
Inventors: 张洪平
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-02-07
Filing date: 1996-02-07
Publication date: 1997-08-06
Anticipated expiration: 2006-02-07

Abstract

The utility model relates to an electromagnetic field protection device in front of a fluoroscopic screen, which is mainly composed of two transparent insulating base plates and a transparent conducting medium, wherein the two transparent insulating base plates are mutually parallel; transparent conducting mediums are filled between the two base plates, and the periphery of the base plates is sealed by sealing materials; a conducting wire is led out from the conducting medium. The utility model has the advantages of reasonable structure, low cost, the vivid reaction of pictures and color on the fluoroscopic screen, clear view and read, and good shielding effect of electromagnetic field, and is a novel protection device of the electromagnetic field.

Description

The electromagnetic field protector

The utility model belongs to the protector before the fluorescent screen, is specially a kind of electromagnetic field protector.

At present, television set has become the requisite consumer goods of each family, computer is entering part family also, people just constantly contact the fluorescent screen of display, the hazards of electromagnetic radiation of fluorescent screen people, especially the operator's is healthy, thus, several electromagnetic-field-shielded covers have appearred, as the patent No. is that 91221749 " the electromagnetic-field-shielded cover of computer monitor " is exactly wherein a kind of, belong to metal coating glass or electro-conductive glass, the radome that also has is a woven wire, there is following shortcoming respectively in these devices:

1, coated glass all has unidirectional light transmission features, and light resistance rate is big, influences brightness effects, and coloured coated glass all has color filtration, damages the tone of picture, can not reproduce the color on the picture realistically, causes the color distortion of picture.

2, electro-conductive glass complex manufacturing technology, cost is too high.

3, the woven wire light resistance rate is big, reduces brightness effects, and influence is looked and read, affect one's power of vision, and the easy-clear not of the dust on the silk screen.

The purpose of this utility model be to provide a kind of rational in infrastructure, cost is low, neither influence is looked and is read effect, has the fluorescent screen protector of good electromagnetic shielding action again.

The purpose of this utility model can be realized by following scheme:

Described electromagnetic field protector mainly is made up of two transparent insulation substrate and transparent conductive medium, and two transparent insulation substrate are parallel to each other, and are full of transparent conductive medium between the two substrates, and its periphery is sealed by encapsulant, draws a lead in the conducting medium.

In the described protector, transparent conductive medium is electrolyte or electrolysis glue, thereby realizes ionic conduction.

In the described protector, there is strutting piece in the edge of two transparent insulation substrate, and is constant to guarantee the conducting medium spatial stability that forms between two substrates, thereby guaranteed the stability of shielding action.Strutting piece can be manufactured by materials such as polymethyl methacrylate or vinyons.

Action principle of the present utility model is as follows:

In the utility model, conducting medium is as a pole plate, form a plane-parallel capacitor with the fluorescent screen under the operating state, the electric field that forms between the two is close to uniform electric field, the electric field in phosphor screen the place ahead almost completely is confined in the small space between fluorescent screen and the protector, around it, almost do not have electromagnetic field to exist, just can not constitute electromagnetic pollution yet.Conducting medium ground connection during lead will be prevented shielding discharges electric charge wherein.

Under open state, the phosphor screen inner face is owing to be subjected to the lasting bump of a large amount of electronics, has been equivalent to form the electrified body in the vertical sensing phosphor screen of power line direction, acts on the space before the phosphor screen.Use the utility model before pressing close to phosphor screen; exactly conducting liquid is placed the fluorescent screen electric field; under the effect of electric field force; cation moves to the fluorescent screen face in the conducting medium; and anion is to moving away from fluorescent screen face direction; the result who moves; anion loses electronics at the ground wire place; ion becomes atom or atomic group; and cation is distributed in the nearly fluorescent screen of conducting medium face one side; form sheath, this sheath has formed an approximate plane-parallel capacitor as positive plate and phosphor screen (as negative plate), thereby the original interior in a big way electric field in the place ahead, fluorescent screen has been confined between the two; even around it, there is other conductor to exist; be not subjected to the effect of electrostatic induction yet, thereby eliminated the electromagnetic pollution before the fluorescent screen, protected health.

After the shutdown, the fluorescent screen inner face no longer is subjected to the bump of electronics, is equivalent to electrified body and disappears, and loses the attraction of electrified body near the cation of fluorescent screen face in the liquid conduction layer and moves on to the protecting screen end of ground lead, obtain electronics become atom or atom because of, finished the former effect of electrolysis similarly.

Simultaneously, the summation material density of electromagnetic field protector will be higher than air far away, also is higher than existing other protecting screen, and according to the protection theory of ionising radiation, fine and close more material has good absorption function more to ionising radiation.So the utility model has the effect of stronger absorption X line than existing protecting screen.

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1, a structural representation of the present utility model also are an embodiment.

The sectional view of Fig. 2, Fig. 1.

Among the figure: 1 fixedly aluminium frame, 2 water white transparency silicate glass substrates, 3 thin copper conductors, 4 vinyon support bars, 5 " 333 " glass cements, 6 salt solution.

As shown in the figure, two water white transparency silicate glass substrates 2 are parallel to each other, the centre is full of conduction salt solution 6, the periphery place is supported by vinyon support bar 4, and " 333 " glass cement 5 sealings of producing with Dongguan, Guangdong eagle chemical industry Co., Ltd, draw a lead 3 in the conducting medium, the periphery of two substrates is fixing by aluminium frame 1.

During use, use a branching bolster supporting below, be positioned over the fluorescent screen before, lead 3 ground connection just can.

The utlity model has following advantage:

(1) rational in infrastructure, cost is low, and security performance is good, long service life.

(2) water white transparency body, the light transmittance height, can be true to nature, clearly anti-glimmeringly go out on the fluorescent screen Picture and color, do not affect to look and read effect.

(3) ionic conduction in electrolyte or the electrolysis glue, theoretical reliable, the shielding of electromagnetic field Effective.

(4) substrate forms, and cleaning easily.

(5) the utility model also has preferably X ray absorption, thereby weakens or eliminate The radiation of X ray to human body, health-care effect is better.

Claims

1, a kind of electromagnetic field protector, it is characterized in that mainly being made up of two transparent insulation substrate and transparent conductive medium, two transparent insulation substrate are parallel to each other, and are full of transparent conductive medium between the two substrates, its periphery is sealed by encapsulant, draws a lead in the conducting medium.

2, electromagnetic field protector according to claim 1 is characterized in that transparent conductive medium is electrolyte or electrolysis glue.

3, electromagnetic field protector according to claim 1 is characterized in that there is strutting piece in the edge of two transparent insulation substrate.