KR100826722B1 - Screen and filter supporting structure of projection television - Google Patents

Abstract

In the screen and filter fixing structure of the projection television according to the present invention, the screen 10 and the filter 12 are supported so as to be able to flow within a predetermined range so that the deformation of the cabinet 20 is reduced by the screen 10 and the filter 12. It comprises a support means not to affect the.

Here, the support means is mounted to the cabinet 20 so as to flow in a diagonal direction, the main bracket 40 for pressing the edge of the screen 10 and the filter 12; It is mounted to the cabinet 20 to be movable in the horizontal direction, and consists of an auxiliary bracket 42 for pressing and supporting the side of the screen 10 and the filter 12.

According to the present invention, the edges and the side edges are pressed by the main bracket 40 and the auxiliary bracket 42, respectively, in the state where the screen 10 and the filter 12 overlap, and are mounted on the cabinet 20, and the screen 10 ) And the filter 12 are supported in a point contact state, thereby being less susceptible to deformation of the cabinet 20 due to temperature changes inside and outside the product.

Further, the support points of the screen 10 and the filter 12 due to the pressing projections of the brackets 40 and 42 are not changed, and the brackets 40 and 42 are fastened to the fastening slots 40a and 42a. Accordingly, the screen 10 and the filter 12 are maintained in an even plane state by being pushed or pulled as appropriate as the amount of deformation of the cabinet 20 is offset.

Therefore, according to the screen and filter fixing structure of the projection television according to the present invention, the distortion of the screen 10 and the filter 12 is prevented by the main bracket 40 and the auxiliary bracket 42, so that a phenomenon such as image distortion is prevented. Since it does not occur, the commercialization of the television is improved, and by using the main bracket 40 and the auxiliary bracket 42 of the same size regardless of the size of the television, there is an advantage in that the productivity of the television is also improved by increasing the part commonization ratio. .

Description

Screen and filter supporting structure of projection television

1 is an exploded perspective view showing the structure of a general projection television and the supporting structure of a screen and a filter.

2 is a cross-sectional view showing a screen and filter support structure of a projection television according to the prior art.

3 is a perspective view showing the structure of the main bracket and the auxiliary bracket to be applied to the embodiment of the present invention.

4 is a plan view showing a screen and a filter support structure of the projection television according to the embodiment of the present invention.

5A and 5B are cross-sectional views taken along the lines A-A and B-B of FIG. 4 showing the support state of the screen and the filter by the main bracket and the auxiliary bracket in the embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

10: screen 12: filter

20: cabinet 40: main bracket

40a: fastening slot 40b: insertion groove

401: compression protrusion 42: auxiliary bracket                 

42a: tightening slot 42b: insertion groove

421: compression protrusion 44: tightening screw

TECHNICAL FIELD The present invention relates to a projection television, and more particularly, to a screen on which an image is reproduced and a support structure of a filter for protecting the screen.

A projection television is a display device that reproduces an image by scanning a light beam containing an image signal on a screen by a rear projection method using a projector. A screen 10 and a filter 12 that reproduce an image as shown in FIG. 2), a cabinet 20 supporting the screen 10, a light tube engine unit (projector) 30 for projecting an image onto the screen 10, and a lamp for applying light to the light tube engine unit 30. (32), the upper and lower back covers 22 and 24 attached to the rear of the cabinet 20 is composed of the main components.

Here, the screen 10 diffuses the light passing through the Fresnel sheet 101 and the Fresnel sheet 101 for condensing the light beam projected from the projection lens 34 of the light transmission engine unit in the direction of the viewer. It consists of a lentil sheet 102 so that the image is displayed, the Fresnel sheet 101 and the lentil sheet 102 is bonded to each other is composed integrally, the front of the lentil sheet 102 has a diffusion effect of light rays A diffusing agent for raising is applied.                         

The filter 12 is used to enhance the contrast of the screen to be reproduced and to protect the screen 10, and is superimposed on the front surface of the rent sheet 102.

On the other hand, the screen 10 and the filter 12 is fixed to the cabinet 20 by a plurality of fixing holders 26, the fixing holder 26 is formed in the longitudinal direction of the insertion line groove 26a in the rod shape The structure of the support structure of the screen 10 and the filter 12 by the fixing holder 26 is a filter (with each fixing holder 26 attached to the upper, lower, left, and right sides of the inside of the cabinet 20. 12) and four sides of the top, bottom, left and right of the screen 10 are made in such a way that is fitted into the insertion line groove (26a).

According to the related art, four sides of the screen 10 and the filter 12 are inserted into and supported by the fixed holder 26, so that the fixed state of the screen 10 and the filter 12 is relatively firmly maintained.

However, according to the conventional screen 10 and the filter 26 supporting structure by the rod-shaped fixing holder 26, the four sides of the screen 10 and the filter 12 are fixed in succession to various parts inside the television. The cabinet 20 and the fixed holder 26 are expanded / contracted due to the heat generated from the back, or the external environment changes, or the screen 10 and the filter 12 are deformed by the external environment so that the flat surface cannot be maintained. There arises a problem that the commerciality of the television is degraded, such as a distorted or blurred image being reproduced.

In addition, since a fixed holder 26 having a different length depending on the size of the television, that is, the screen inch, should be used, there is a problem in that the production rate of the television also decreases due to a decrease in the rate of component commonization due to the production of the product.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and at the same time the TV and the screen are fixed while the cabinet and the filter according to the temperature change or the screen and the filter itself, the screen and the filter to maintain an even plane state at the same time An object of the present invention is to provide a screen and filter support structure of a projection television to which the screen and the filter are fixed regardless of the size of the screen.

A screen and filter fixing structure of a projection television provided to achieve the above object includes a projection television including a screen and a filter, a cabinet for supporting the screen and a filter, and support means for connecting the screen and the filter and the cabinet. To; The support means includes an insertion groove into which the screen and the filter are inserted, and are movable in a direction away from or near the center of the screen in a state of being coupled to the cabinet.

Here, the support means is mounted to the cabinet to be movable in a diagonal direction, the main bracket for pressing the edge of the screen and the filter; It is mounted to the cabinet so as to flow in a horizontal direction, and consists of an auxiliary bracket for pressing the side of the screen and the filter.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 3 to 5, and the same reference numerals will be given to the same parts as the conventional configurations of the present invention.

The screen and filter support structure of the projection television according to the embodiment of the present invention supports the screen and the filter to be movable within a certain range so that the deformation of the cabinet does not affect the screen and the filter, and also the deformation of the screen and the filter. It comprises a support means for flowing along.

The support means is composed of a plurality of main bracket 40 and the auxiliary bracket 42 as shown in a, b of Figure 3, the main bracket 40 has a fastening slot 40a of a diagonal direction formed on one side And, the approximate '?? formed with the insertion groove (40b) on the other side It is made of a ', the insertion groove 40b is provided with a hemispherical pressing protrusion 401 protruding symmetrically from each other.

In addition, the auxiliary bracket 42 has a horizontal fastening slot 42a formed on one side, and an insertion groove 42b is formed on the other side, and the pressing protrusion 421 protruding symmetrically from each other in the insertion groove 42b. ) Is provided.

The main bracket 40 is mounted to the corner portion of the cabinet 20 as shown in Figure 4, the fastening slot 40a by a fastening screw 44 mounted through the fastening slot 40a to the cabinet 20 It is mounted to be able to flow in the diagonal direction by the length of the), and the edge of the screen 10 and the filter 12 inserted into the insertion groove 40b is pressed by the pressing projection 401 (see Fig. 5 a). )

The auxiliary bracket is mounted to the cabinet 20 so as to be movable in the horizontal direction by the length of the fastening slot 42a by the fastening screw 44 mounted to the cabinet 20 through the fastening slot 42a. The side surfaces of the screen 10 and the filter 12 inserted into the 42b are pressed and supported by the pressing protrusion 421 (see FIG. 5B).                     

According to the exemplary embodiment of the present invention as described above, the corners and sides are pressed by the main bracket 40 and the auxiliary bracket 42, respectively, in the state where the screen 10 and the filter 12 are overlapped, so that the cabinet 20 is supported. According to each of the brackets 40 and 42, the screen 10 and the filter 12 are supported in the point contact state, thereby affecting the deformation of the cabinet 20 due to temperature changes inside and outside the product. You will receive less.

In addition, since the pressing protrusions 401 and 421 of the brackets 40 and 42 hold the screen 10 and the filter 12, even when the screen 10 and the filter 12 are self-deformed, each bracket The screen 10 and the filter 12 maintain an even planar state by moving the parts 40 and 42 appropriately by offsetting the deformation amount of the screen 10 and the filter 12 along the fastening slots 40a and 42a. Done.

In addition, according to the present embodiment, since the brackets 40 and 42 support the screen 10 and the filter 12 in the point contact state, those having the same standard are used regardless of the size of the television. Only the number of uses of the auxiliary bracket 42 varies according to the size.

As described above, according to the screen and filter fixing structure of the projection television according to the present invention, the distortion of the screen and the filter is prevented by the main bracket and the auxiliary bracket, so that the phenomenon of image distortion does not occur. In addition, by using the main bracket and the auxiliary bracket of the same size regardless of the size of the television has the advantage that the part commonization rate is increased to improve the productivity of the television.

Claims (3)

With screens and filters, A cabinet supporting the screen and the filter; Support means for connecting the screen and filter and the cabinet A projection television comprising; The support means, An insertion groove into which the screen and the filter are inserted, Screen and filter support structure of a projection television, characterized in that the movement in the direction away from or near the center of the screen coupled to the cabinet. The method of claim 1, wherein the support means, A fastening slot in a diagonal direction is formed at one side, and the insertion groove is formed at the other side, and has a pressing protrusion protruding symmetrically in the insertion groove. The fastening screw is mounted in the cabinet by passing through the fastening slot. And a main bracket mounted to the cabinet so as to flow in a diagonal direction by the length of the fastening slot, the main bracket for pressing the edge of the screen and the filter into the insertion groove with the pressing projection. Filter support structure. The method of claim 1, wherein the support means, A fastening slot in a horizontal direction is formed at one side, and the insertion groove is formed at the other side, and has a pressing protrusion protruding symmetrically in the insertion groove. The fastening screw is mounted to the cabinet through the fastening slot. A projection bracket mounted on the cabinet so as to be movable in a horizontal direction by the length of the fastening slot, and including an auxiliary bracket for pressing and supporting the side of the screen and the filter inserted into the insertion groove with the pressing protrusion. Filter support structure.

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