Mounting structure of lamp in Projector

专利摘要:
PURPOSE: Structure for fixing a lamp in a projector is provided to move the lamp while over heating, to prevent crack of the lamp cause by overheat expansion and to improve operational safety of the projector. CONSTITUTION: Structure for fixing a lamp of a projector comprises a lamp holder(20) supporting a lamp(10); a returning unit elastically returning the lamp into an original position; a frame(14) attached to a front side of a funnel(12); a tension guide(40) installed on a front unit of the lamp holder; a floor face(201) mounted on the lamp holder; a fixing protrusion(24) formed on the floor face of the lamp holder; and a fixing groove(20a) mounted on an upper portion of the front unit of the lamp holder. The frame of the lamp is attached to the front unit of the lamp holder to move the lamp. Thereby, the structure for fixing the lamp of the projector moves the lamp while over heating. Moreover, the structure for fixing the lamp of the projector prevents crack of the funnel or a neck while deforming the funnel or the frame of the lamp caused by heating the lamp.
公开号:KR20020008922A
申请号:KR1020000041894
申请日:2000-07-21
公开日:2002-02-01
发明作者:신종훈
申请人:구자홍；엘지전자주식회사；
IPC主号:

专利说明:

Mounting structure of lamp in Projector}
[14] The present invention relates to a projector, and more particularly, to a lamp fixing structure of the projector which helps to improve the operational stability of the projector by preventing damage to the lamp even when overheating and preventing the lamp's optical axis center from shifting.
[15] In general, a projection type display device includes a projector that scans a light beam containing an image signal, and a screen that displays an image by reflecting the light beams scanned from the projector. A plurality of dichroic mirrors for selectively reflecting or transmitting light rays (white light) generated by the lamps, and a liquid crystal panel for controlling an amount of transmission of pixels separated by the dichroic mirrors to form an image; The main component is a projection lens that enlarges an image formed on a liquid crystal panel and projects it on a screen.
[16] The lamp is a main component that determines the basic performance of the projector such as brightness and color of the image formed on the screen. As shown in FIG. 1, the lamp 10 is disposed on the front of the funnel 12 and the funnel 12. An attached frame 14, an iron core 16 provided at the rear of the funnel 12, a neck 18 partially surrounding the iron core 16 and a connection bolt 19 protruding from the iron core 16 The iron core 16 is made of a metal material such as iron (鐵), the neck 18 and the iron core 16 is combined with a gypsum material.
[17] On the other hand, since the brightness, color, and the like of the image produced by the projector vary greatly depending on the direction of the light scanned from the lamp 10, the lamp 10 has its fixed state firmly maintained so that the left, right, up and down directions It is mounted in a structure fixed by the lamp holder 20 so that the optical axis center of x, y, z axis | shafts may not shift in a figure.
[18] The fixing structure of the lamp 10 by the lamp holder 20 includes a guide protrusion 22 in which the frame 14 on the front side of the funnel 12 is provided on the front side of the bottom 201 of the lamp holder 20, and the lamp. It is fitted between the front portion 202 of the holder 20, the left and right sides of the frame is fitted to the side portion 203 of the lamp holder 20, the fixed wire 30 is crossed over the funnel 12, the lamp holder ( 20 is fitted to both side portions 203.
[19] Therefore, according to the lamp fixing structure according to the related art as described above, the movement of the left and right directions (x-axis) of the lamp 10 is limited by the side portions 203 of the lamp holder 20, and the up and down direction (in the drawings). y-axis) movement is limited by the fixed wire 30, the front-rear direction (z-axis in the drawing) movement is limited by pressing by the front portion 202 and the guide projection 22 of the lamp holder (20) ), The optical axis centers in each direction do not shift.
[20] On the other hand, the lamp 10 has a high temperature due to its operating characteristics, the lamp 10 is overheated to expand the funnel 12 and the frame 14, according to the prior art as described above of the lamp holder 20 Since the lamp 10 is pressed and supported by the side portion 203 without any fluidity, when the funnel 12 and the frame 14 are expanded to a certain level or more, the pressing state of the funnel 12 is increased and eventually The problem arises that a crack occurs in the funnel 12 or the neck 18.
[21] The present invention has been made to solve the above-mentioned conventional problems, the lamp fixing structure of the projector to help improve the operation stability of the projector by preventing the lamp crack due to overheated expansion to allow the movement of the lamp to some extent even during overheating It is for the purpose of providing.
[1] 1 is an exploded perspective view showing a lamp fixing structure of a conventional projector.
[2] 2 is a combined perspective view showing a lamp fixing structure of a conventional projector.
[3] 3 is an exploded perspective view showing a lamp fixing structure of the projector according to the embodiment of the present invention.
[4] 4 is a combined perspective view showing a lamp fixing structure of the projector according to the embodiment of the present invention.
[5] <Explanation of symbols for the main parts of the drawings>
[6] 10: lamp 12: funnel
[7] 14: frame 16: iron core
[8] 18: Neck 19: Connection Bolt
[9] 20: lamp holder 20a: locking groove
[10] 201: bottom 202: front
[11] 203: side portion 22: guide projection
[12] 24: Jamming 30: Fixed wire
[13] 40: tension guide
[22] The lamp fixing structure of the projector provided to achieve the above object is a lamp composed of a funnel and the frame attached to the front of the funnel and the iron core provided at the rear of the funnel, a neck partially covering the iron core and a connection bolt protruding from the iron core. And a lamp holder for supporting the frame while maintaining a predetermined distance from the frame of the lamp, and returning means for correctly maintaining each direction of the optical axis center by elastically returning the lamp to its position when the lamp flows. .
[23] The return means is bent to surround the left and right sides and the upper surface of the funnel of the lamp, and both ends thereof are rotatably connected to the bottom surface of the lamp holder, and the middle part is mounted in the form of being caught on the top of the front part of the lamp holder. It consists of a tension guide.
[24] Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 3 and 4, and the same reference numerals will be given to the same parts as the prior art configurations of the present invention.
[25] First, the lamp fixing structure of the projector according to the embodiment of the present invention has a lamp 10, the lamp holder 20 for supporting the lamp 10, and the flow of the lamp 10 as shown in FIG. It is made of a return means for elastically returning the lamp 10 in place.
[26] Here, the lamp 10 comprises a funnel 12 and a frame 14 attached to the front of the funnel 12, the lamp holder 20 is the distance (L) between both side portions (203) ) Is slightly larger than the left and right lengths 1 of the frame 14 (about 1 mm), and is configured to support the lamp 10 while maintaining a predetermined distance from the frame 14.
[27] In addition, the return means is bent to surround the left and right sides and the upper surface of the funnel 12 of the lamp 10, both ends are rotatably connected to the bottom 201 of the lamp holder 20, the middle portion is It consists of a tension guide (tension guide) 40 is mounted in the form that is caught on the top of the front portion 202 of the lamp holder (20). The tension guide 40 is a kind of metal member such as a wire bent in a specific shape, and has a material and structural characteristics capable of exerting a certain elastic force.
[28] According to the present invention as shown in Figure 4, both ends of the tension guide 40 is inserted into the engaging projection 24 provided on the bottom surface 201 of the lamp holder 20, the lamp 10 is a lamp holder After mounting on the 20, the middle portion of the tension guide 40 is lifted so that the tension guide 40 is caught by the engaging groove 20a formed at the top of the front portion 202 of the lamp holder 20. In order, the lamp 10 is fixed to the lamp holder 20.
[29] According to the lamp fixing structure of the projector according to the present invention as described above in the state in which the frame 14 of the lamp 10 is in contact with the front portion 202 of the lamp holder 20 10) the flow of the funnel 12 and the frame 14 is expanded or deformed due to the heat generation during the operation of the lamp 10, or the position of the funnel 12 or the neck ( 18) no cracking occurs.
[30] In addition, when the position of the lamp 10 is moved due to the structure of the tension guide 40 wrapping the left and right sides and the upper surface of the funnel 12 at the same time, the optical axis center is slightly displaced, in which case the tension guide 40 is a lamp ( Because the elastic pressing force is applied in the direction opposite to the moving direction of 10), the position of the lamp 10 is immediately corrected, so that the optical axis center in the left, right, up and down directions (x, y, z axis in the drawing) (see FIG. 3). Is kept within a certain range of error.
[31] As described above, according to the lamp fixing structure of the projector according to the present invention, first, since the lamp is expandable and flowable to some extent within the structure of the lamp holder, the lamp is heated so that no cracking occurs in the funnel or neck. Secondly, since the lamp is urged elastically to the tension guide, the deviation of the optical axis center due to the position of the lamp is immediately corrected, which has the advantage of improving the operational stability of the projector.

权利要求:
Claims (2)
[1" claim-type="Currently amended] A lamp comprising a funnel, a frame attached to the front of the funnel, and an iron core provided at the rear of the funnel;
A lamp holder for supporting the frame while maintaining a predetermined distance from the frame of the lamp;
Return means for correctly maintaining the optical axis center in each direction by elastically returning the lamp to its position when the lamp flows
Lamp fixing structure of the projector comprising a.
[2" claim-type="Currently amended] The method of claim 1, wherein the return means
It is bent to surround the left and right sides and top of the funnel of the lamp, the both ends are rotatably connected to the bottom surface of the lamp holder, and the middle portion is made of a tension guide that is mounted in the form of being caught on the top of the front of the lamp holder. Lamp fixing structure of the projector.

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引用文献:

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公开号 | 申请日 | 公开日 | 申请人 | 专利标题

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法律状态:
2000-07-21|Application filed by 구자홍, 엘지전자주식회사

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2000-07-21|Priority to KR1020000041894A

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2002-02-01|Publication of KR20020008922A

优先权:

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申请号 | 申请日 | 专利标题

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KR1020000041894A|KR20020008922A|2000-07-21|2000-07-21|Mounting structure of lamp in Projector|