KR20000056198A - Shield cover - Google Patents

Abstract

PURPOSE: A shield cover is provided to enable users to minimize manufacturing costs by minimizing the use of shield cover for preventing electromagnetic wave which stops electromagnetic wave from being released so as to prevent it from harming human bodies. CONSTITUTION: A shield cover includes the following components. A front case(1) is connected with a main printed circuit board(3). A cathode ray tube(5) is connected with the front case(1). A video shield(7) stops electromagnetic wave from being released by shielding the video printed circuit board(6) of the cathode ray tube(5). A monitor equipped with rear case which is connected with the front case(1) shields the cathode ray tube(5) and stops the electromagnetic wave from being released. The device enables users to successfully stop electromagnetic wave from being released.

Description

Shield cover {Shield cover}

The present invention relates to a shield cover, and more particularly, to cover a cathode ray tube (CRT) such as a monitor, and to shield electromagnetic wave from being emitted from the cathode ray tube. The present invention relates to a shield cover that can reduce cost by minimizing usage.

1 is a schematic exploded perspective view of a monitor to which a shield cover according to the prior art is applied.

As shown in the drawing, a front case 1 on which various function buttons are mounted, and a main PCB 3 on which various circuit components are mounted on a bottom plate 2 fixed to the front case 1 And a cathode ray tube 5 fixed to the front case 1 and a video PCB 6 of the cathode ray tube 5 by a belt-shaped bracket 4 mounted integrally on the outer surface. A video shield (7) which wraps around and shields the electromagnetic waves emitted from it, a degaussing coil (8) which is fixed to the cathode ray tube (5) and removes the magnetic field remaining in the cathode ray tube (5); A shield cover 9 which surrounds the cathode ray tube 5 and the main printed circuit board 3 and shields electromagnetic waves emitted from them, and a rear case 10 which is coupled to the front case 1 to protect internal components. ) Is configured.

However, the video shield 7 and the shield cover 9 described above use expensive aluminum material having excellent processability and conductivity, and surround the cathode ray tube 5 and the main printed circuit board 3 to be emitted from them. The use of the shield cover 9 for shielding the electromagnetic waves is unnecessarily large, resulting in a cost increase.

That is, the shield cover 9 positioned behind the video shield 7 shielding the video PCB 6 of the cathode ray tube 5 described above surrounds the cathode ray tube 5 in a state overlapping with the video shield 7. Therefore, the usage of the shield cover 9 is unnecessarily increased.

In addition, since a separate ground member (not shown) is required to be grounded between the shield covers 9 to the above-described video shield 7, the cost increases due to the increase in the number of parts. Due to the increase in the number of labor for fixing the workability is significantly reduced.

Accordingly, an object of the present invention is to provide a shield cover for shielding the cathode ray tube so as to block the emission of electromagnetic waves generated from the cathode ray tube such as a monitor. It is to provide a shield cover that can be removed to minimize the use of expensive shield cover.

It is another object of the present invention to provide a shield cover that can reduce the unnecessary use of an expensive shield cover to significantly reduce its cost.

Another object of the present invention is to eliminate the use of a separate grounding member for grounding the shield cover for the video shield to reduce the cost of components by reducing the number of parts, to improve the workability by reducing the labor cost To provide.

1 is a schematic exploded perspective view of a monitor to which a shield cover according to the prior art is applied;

2 is a schematic exploded perspective view of a monitor to which a shield cover is applied according to an embodiment of the present invention;

3 is a side view showing the mounting of FIG.

4 is a schematic exploded perspective view of a monitor to which a shield cover is applied according to another embodiment of the present invention;

FIG. 5 is a side view illustrating the mounting of FIG. 4. FIG.

* Explanation of symbols used in the main part of the drawing

One; Front case

2; Bottom plate

3; Main printed circuit board (main PCB)

5; Cathode ray tube (CRT)

6; Video PCB

7; Video shield

11; Shield cover

12; Pressing piece

13; Bend

14; Extension

The object of the present invention described above is a video shield for shielding electromagnetic waves by shielding a front case, a main printed circuit board fixed to the front case, a cathode ray tube fixed to the front case, and a video PCB of the cathode ray tube. And a rear case coupled to the front case, the monitor comprising: shielding the cathode ray tube to shield electromagnetic waves emitted from the cathode ray tube, and its rear end cut out so as not to overlap the rear of the video shield; It is achieved by providing a shield cover characterized in that it further comprises a shield cover which is pressed and supported along the outer surface of the video shield.

According to a preferred embodiment, the shield cover is formed to protrude inwardly to the end of the shield cover to prevent being spaced apart from the outer surface of the video shield pressurized to maintain the initial state of contact by pressing the outer surface of the video shield It is further equipped with a piece.

The object of the present invention described above is a video shield for shielding electromagnetic waves by shielding a front case, a main printed circuit board fixed to the front case, a cathode ray tube fixed to the front case, and a video PCB of the cathode ray tube. And a rear case coupled to the front case, the monitor comprising: shielding the cathode ray tube to shield electromagnetic waves emitted from the cathode ray tube, and at its rear end cut away so as not to overlap the rear of the video shield; The formed bent portion is achieved by providing a shield cover further comprising a shield cover which is elastically supported and grounded with respect to the extension piece formed along the outer side of the video shield.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, which are intended to be described in detail to be easily carried out by those skilled in the art in order to facilitate understanding of the technical contents of the present invention. For this reason, the technical scope of the present invention is not limited.

As shown in Figures 2 and 3, the shield cover according to an embodiment of the present invention, the front case 1 is equipped with various function buttons, and the bottom plate (2) fixed to the front case (1) A main printed circuit board (3) on which various circuit components are mounted, a cathode ray tube (5) fixed to the front case (1) by a band-like bracket (4) integrally mounted on an outer surface, and the cathode ray The configuration includes a video shield 7 which surrounds the video PCB 6 of the tube 5 and shields electromagnetic waves emitted from the tube 5, a rear case 10 detachably coupled to the front case 1, and the like. And, since it is applied substantially the same as shown in Figure 1, the overlapping reference numerals are indicated the same, detailed description thereof will be omitted.

Therefore, according to a preferred embodiment of the present invention, the cathode ray tube 5 is shielded to shield the electromagnetic waves emitted from the cathode ray tube 5, and is cut out so as not to overlap the rear of the video shield 7. The rear end thereof is further provided with a shield cover 11 which is pressed inward along the outer surface of the video shield 7 and contacts and grounds the outer surface of the video shield 7 when pressed.

In this case, the shield cover 11 described above is protruded to have an elastic force inwardly at the end of the shield cover 11 so as to prevent the shield cover 11 from being spaced apart from the outer surface of the video shield 7, and thus, outside the video shield 7. It is further provided with a pressing piece 12 for maintaining the initial state of contact by pressing the side.

Referring to the method of using the shield cover according to an embodiment of the present invention configured as described above are as follows.

As shown in FIG. 3, the cathode ray tube 5 and the main printed circuit board 3 are fixed to the front case 1 and the video shield surrounding the video PCB 6 of the cathode ray tube 5. 7) shields the electromagnetic waves emitted from the video PCB (6), and also shields the electromagnetic waves emitted from the cathode ray tube (5) by the shield cover 11 surrounding the cathode ray tube (5). .

At this time, by minimizing the amount of the shield cover 11 surrounding the cathode ray tube 5 described above, it is possible to drastically reduce the raw material cost due to the use of expensive aluminum materials. That is, as the shield cover 11 surrounding the cathode ray tube 5 is cut out to overlap the rear portion of the video shield 7, the amount of the shield cover 11 can be greatly reduced.

In addition, since the pressing piece 12 protruding to have an elastic force to the inside of the shield cover 11 described above is pressed inward when contacting the outer surface of the video shield 7, the shield cover against the outer surface of the video shield 7 It is possible to prevent the pressing piece 12 of 11 to be spaced apart, it is unnecessary to use a separate grounding member for the grounding of the shield cover 11 for the video shield (7).

On the other hand, as shown in Figure 4 and 5, the shield cover according to another embodiment of the present invention, shielding the above-described cathode ray tube 5 to shield the electromagnetic waves emitted from the cathode ray tube 5, The bent portion 13 formed at the rear end of the shield cover 11 cut out so as not to overlap the rear of the video shield 7 is elastically supported with respect to the extension piece 14 formed along the outer surface of the video shield 7, The shield cover 11 is grounded with respect to the video shield 7 when the bent portion 13 is elastically supported by the extension piece 14.

Referring to the method of using the shield cover according to another embodiment of the present invention configured as described above are as follows.

As shown in FIG. 5, the video PCB 6 of the above-described cathode ray tube 5 is wrapped by the video shield 7 to shield electromagnetic waves emitted from the video PCB 6, and the above-described cathode ray tube ( 5) The shield cover 11 for shielding the emission of electromagnetic waves is cut off the overlapping portion to the rear of the video shield 7, it is possible to significantly reduce the use of the shield cover (11).

In this case, when the rear case 10 equipped with the shield cover 11 is coupled to the front case 1 to the left side in FIG. The end of the bent portion 13 formed at the rear end of the cover 11 passes over the end of the extension piece 14 formed on the outer surface of the video shield 7.

That is, as shown by the imaginary line of FIG. 5, the bent portion 13 can be bent and its end can be maintained in close contact with one side of the extension piece 14. Accordingly, it is possible to prevent the bent portion 13 of the shield cover 11 from being spaced apart from the extension piece 14 of the video shield 7, and the ground of the shield cover 11 with respect to the video shield 7. There is no need to use a separate grounding member.

As described above, according to a preferred embodiment, a video shield for shielding the video PCB of the cathode ray tube has a shield cover for shielding the cathode ray tube to block the emission of electromagnetic waves harmful to the human body generated from the cathode ray tube such as a monitor By eliminating the overlapping parts in the rear, it is possible to minimize the use of expensive shield cover.

In addition, the cost of shield cover can be greatly reduced by reducing the unnecessary use of expensive shield cover, and the cost of the component can be greatly reduced by eliminating the use of a separate grounding member that grounds the shield cover for the video shield. This has the advantage of significantly improving workability by reducing labor.

Claims (3)

A front shield, a main printed circuit board fixed to the front case, a cathode ray tube fixed to the front case, a video shield to shield electromagnetic waves by shielding the video PCB of the cathode ray tube, and coupled to the front case. On a monitor with a rear case: And shielding the cathode ray tube to shield electromagnetic waves emitted from the cathode ray tube, and further comprising a shield cover having a rear end of the cut portion not pressed to the rear of the video shield to be pressed and grounded along the outer surface of the video shield. Shield cover, characterized in that. The shield of claim 1, wherein the shield cover protrudes inwardly at an end portion of the shield cover to prevent the shield cover from being spaced apart from the outer surface of the video shield, and maintains an initial state of contact with the outer surface of the shield. Shield cover further comprising a piece. A front shield, a main printed circuit board fixed to the front case, a cathode ray tube fixed to the front case, a video shield to shield electromagnetic waves by shielding the video PCB of the cathode ray tube, and coupled to the front case. On a monitor with a rear case: Shielding the cathode ray tube to shield the electromagnetic wave emitted from the cathode ray tube, the bent portion formed on its rear end cut so as not to overlap the rear of the video shield is elastically supported with respect to the extension formed along the outer side of the video shield Shield cover, characterized in that it further comprises a shield cover that is grounded.