KR980009288U - Image generation means installation structure for the projector - Google Patents

Abstract

The present invention relates to an image generating means fastening structure for a projector.

The image generating means fastening structure for the projector includes an angle adapted to be fastened to a housing on an optical path between the cold mirror and the projection lens; First fastening means for fastening the housing and the angle to each other; A plurality of main brackets configured to adjust left and right directions and up and down directions of the image generating means; Support plates formed on both sides of the main bracket in an image generating means array direction; A second fastening means for fastening the support plate and the angle, and adjusting the tilt of the main bracket, and fastening the support plate and the angle; A first bracket positioned on one side of the main bracket and supporting the liquid crystal panel; A plurality of second brackets each installed before and after the first bracket to support each of the pair of polarizing plates; A pair of third brackets installed on the outside of the second bracket to support each of the first and second converging lenses; And third fastening means for fastening the first, second, and third brackets to the main bracket, wherein the image generating means can be separated from the housing only by releasing the first fastening means.

Description

Image generation means installation structure for the projector

The present invention relates to an image generating means installation structure for a projector which is easy to install and replace the image generating means.

FIG. 1 is a schematic perspective view showing an optical arrangement of a color liquid crystal projector capable of realizing a color image with one liquid crystal panel.

As shown, light emitted from the lamp 10 and reflected from the reflector 11 passes through an aperture 12 installed in front of the lamp 10 and has an aspect ratio corresponding to the screen 24. It becomes square light. Here, the aperture 12 has an ineffective light incident on the parabolic reflecting surface (not shown) is formed on the surface facing the lamp 10 to increase the efficiency of the light emitted from the lamp 10 Reflect to make it available. The rectangular light passing through the aperture 12 becomes uniform light while passing through the scrambler 13 of the rectangular parallelepiped, and the image mirror 14 and the hot mirror 15 which transmits infrared light and reflects the remaining light. It enters into the image generating means via. The image generating means includes a liquid crystal panel 18 coated with red, blue, green or yellow, magenta, and cyan color by pixel unit, and a pair of polarizing plates 17 formed before and after the polarizing plates 17, respectively. And first and second converging lenses 16 and 19 installed to focus incident light.

This image generating means generates an image in accordance with the operation of the liquid crystal panel 18 via the light irradiated from the lamp 10. The light generated by the image generating means passes through the projection lens 20 including the reflection mirror 21 and the plurality of lens units 22 which determine the focusing degree and the magnification ratio of the image, and then the screen 24 It is reflected from the total reflection mirror 23 disposed at an angle of inclination on the rear surface and is magnified and projected on the screen 24.

Here, each member requires precise optical arrangement about the optical axis. To this end, the image generating means is coupled to the housing, and the fine adjustment of the height, left and right movement and focus is essential.

In the conventional projector, a plurality of brackets provided between the members are fastened directly to the housing to fasten the members constituting the image generating means, that is, the first and second focusing lenses, the polarizing plate, and the liquid crystal panel to the housing.

Therefore, when a part of the image generating means breaks down, it is difficult to disassemble the whole image generating means for repair and replacement. In addition, there is a problem in that the productivity efficiency is lowered because of the difficulty of assembly of the product.

The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide an image generating means installation structure for a projector, in which an image generating means is firmly installed and, when necessary, is easily disassembled and assembled.

1 is a schematic perspective view showing an optical arrangement of a color liquid crystal projector capable of realizing a color image with one liquid crystal panel.

Figure 2 is an exploded perspective view of the image generating means and each bracket shown to explain an embodiment of the image generating means for the projector installation structure according to the present invention.

3 is a perspective view showing an angle according to the present invention.

Figure 4 is an exploded perspective view of the image generating means installation structure according to the present invention is fastened to the housing.

* Explanation of symbols for the main parts of the drawings

16 first converging lens 17 polarizing plate 18 liquid crystal panel

19: Second procedure lens 30: Main bracket 40: First bracket

51, 53, 55: 2nd bracket 61, 63: 3rd bracket

71: first fastening means 76: second fastening means

80: third fastening means 90: angle

100: housing

In order to achieve the above object, there is provided an image generating means mounting structure for a projector according to the present invention, the angle being adapted to be fastened to a housing on an optical path between a cold mirror and a projection lens; First fastening means for fastening the housing and the angle to each other; A plurality of main brackets configured to adjust left and right directions and up and down directions of the image generating means; Support plates formed on both sides of the main bracket in an image generating means arrangement direction; Second fastening means for fastening the support plate to the angle and adjusting the tilt of the main bracket, and fastening the support plate to the angle; A first bracket positioned on one side of the main bracket and supporting the liquid crystal panel; A plurality of second brackets each installed before and after the first bracket to support each of the pair of polarizing plates; A pair of third brackets installed on the outside of the second bracket to support each of the first and second converging lenses; And third fastening means for fastening the first, second, and third brackets to the main bracket, so that the image generating means can be separated from the housing only by releasing the first fastening means. .

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is an exploded perspective view of the image generating means and each bracket shown to explain the embodiment according to the present invention, and FIG. 3 is a perspective view showing an angle according to the present invention. And, Figure 4 is an exploded perspective view of the image generating means installation structure according to the present invention is fastened to the housing.

As shown, the image generating means includes a liquid crystal panel 18, a pair of polarizing plates 17 formed before and after the liquid crystal panel 18 so as to transmit only light of a predetermined polarization, and the polarizing plate 17 And first and second converging lenses 16 and 19 that are respectively installed outside the light beams to focus incident light. The liquid crystal panel 18 is coated with red, blue, green or yellow, magenta, and color filters for each pixel unit, and an external voltage is applied for each pixel unit through the cable 18 '.

In this way, the provided image generating means is provided in each of the plurality of brackets. The bracket includes a main bracket 30, a first bracket 40 supporting the liquid crystal panel 18, a second bracket 51, 53, 55 supporting each of the pair of polarizing plates 17, And third brackets 61 and 63 supporting the first and second converging lenses 16 and 19, respectively. The main bracket 30 includes a first main bracket 31 and a second main bracket 33 and a third main bracket 35 which are mutually fastened to adjust the left and right and up and down directions of the image generating means. do. The first bracket 40 is fastened to the first bracket 40, the second bracket 51, 53, 55, and the third bracket 61, 63 and the third fastening means 80. do. The second main bracket 33 is screwed so as to be movable in a left and right direction with respect to the first main bracket 31 to adjust the movement in the left and right directions of the first main bracket 31. The third main bracket 35 has a support plate 37 formed in the arrangement direction of the image generating means on both sides thereof, and is coupled to an angle 90 to be described later by the second fastening means 76 and the second main bracket. Adjust the vertical movement of (33).

Here, the main bracket 30 has a through hole 30 ′ formed at the center thereof so that light emitted from the lamp of the projector (FIG. 10) can pass therethrough.

The first bracket 40 is a member supporting the liquid crystal panel 18 and faces the third main bracket 35 and passes through a portion of the through groove 30 ′. Is fastened by the third fastening means 80 to a predetermined position.

The second brackets 51, 53, and 55 are positioned before and after each of the pair of polarizing plates 17, and like the first bracket 40, third fastening means to the first main bracket 31. Fastened by 80. The third brackets 61 and 63 support the first and second converging lenses 16 and 19, respectively. In order to install the first and second converging lenses 16 and 19 formed convexly on the third brackets 61 and 63, the support pieces 62 and 64 and the support pieces 62 and 64 are removed. And screws (62 ', 64') coupled to the three brackets (61, 63).

A plurality of fastening grooves 82 formed at respective corresponding positions of the first, second and third brackets by the third fastening means 80, and the first main brackets passing through the fastening grooves 82; And a screw 81 coupled to the fastening hole 82 '. In addition, the third fastening means 80 is not limited to the screw 81, the fastening groove 82 and the fastening hole 82 'mentioned above, and may be fastened by an adhesive or a clip. Since this is widely known, a detailed description thereof will be omitted.

As described above, the image generating means fastened to the main bracket 30 by the third fastening means 80 includes a support plate 37 formed on the third main bracket 35 at an angle 90, and a second one. It is coupled by the fastening means 76. As shown in FIG. 3, the angle 90 connects two coupling parts 91 to which the support plates 37 are coupled, and connects the two coupling parts 91 to the bottom surface of the housing 100. It can be divided into a connecting portion 93 and a fastening portion 95 formed on the upper surface of the coupling portion 91. Second fastening means 76 fastening the engaging portion 91 of the support plate 37 and the angle 90 to the engaging portion 91 and a plurality of fastening holes 77 at corresponding positions of the supporting plate 37. ) Is formed, and the support plate 37 is coupled by fastening the screw 78 to the fastening hole 77. A part of the fastening hole 77 is formed as a long hole 78 ', and the body of the screw 78' fastened to the long hole 78 'is an asymmetric pillar rather than a cylinder. Therefore, the focus of the third main bracket 35 with respect to the angle 90 can be adjusted by rotating the screw 78 'fastened to the long hole 78'.

The angle 90 is fastened to a predetermined position of the housing 100 by the first fastening means 71, that is, on the optical path between the cold mirror (FIG. 1 15) and the projection lens (FIG. 1 20). The first fastening means 71 includes the connection part 93, a fastening hole 72 formed in the fastening part 95, and a screw 73 fastened to the fastening hole 72. In addition, the first fastening means (71) is formed with a guide hole (74) for guiding a coupling position at a predetermined position of the connecting portion (93), and inserted into the guide hole (74) on the bottom surface of the housing (100). Losing protrusions 75 may be further included.

As described above, since the projector image generating means mounting structure according to the present invention includes the angle 90, the angle 90 fastens the image generating means using a plurality of brackets, and the angle 90 It can be separated from the housing 100 only by the release of the first fastening means (71). Therefore, when a part of the image generating means has failed, repair and replacement are easy. In addition, the assemblability of the product can be improved to increase the production efficiency.

Claims (5)

An angle adapted to be fastened to a housing on an optical path between the cold mirror and the projection lens; First fastening means for fastening the housing and the angle to each other; A plurality of main brackets configured to adjust left and right directions and up and down directions of the image generating means; Support plates formed on both sides of the main bracket in an image generating means arrangement direction; Second fastening means for fastening the support plate to the angle and adjusting the tilt of the main bracket, and fastening the support plate to the angle; A first bracket positioned on one side of the main bracket and supporting the liquid crystal panel; A plurality of second brackets each installed before and after the first bracket to support each of the pair of polarizing plates; A pair of third brackets installed on the outside of the second bracket to support each of the first and second converging lenses; And a third fastening means for fastening the first, second and third brackets to the main bracket, so that the image generating means can be separated from the housing only by releasing the first fastening means. Image production means fastening structure for projector. According to claim 1, wherein the angle is characterized in that it comprises two coupling parts to which each of the supporting plate is coupled, connecting the two coupling parts, a connecting portion located on the bottom surface of the housing, and a fastening portion formed on the upper surface of the coupling portion Fastening structure for the image generation means for the projector. 3. The projector according to claim 2, wherein the second fastening means comprises the coupling part, a plurality of fastening holes formed at corresponding positions of the support plate, and a screw fastened to the fastening hole to couple the support plate to the angle. Fastening structure for burn generation means. 3. The fastening structure of claim 2, wherein the first fastening means includes the connection part, a fastening hole respectively formed in the fastening part, and a screw fastened to the fastening hole. According to claim 4, The first fastening means is formed in a predetermined position of the connecting portion guide hole for guiding the coupling position of the angle, and the projection is inserted into the guide hole on the bottom surface of the housing further comprises Fastening structure for the image generation means for the projector. ※ Note: This is to be disclosed based on the first application.