CN101986197A

CN101986197A - Projector

Info

Publication number: CN101986197A
Application number: CN 201010230700
Authority: CN
Inventors: 曾万军
Original assignee: Shenzhen Acto Digital Video Technology Co Ltd
Current assignee: Shenzhen Acto Digital Video Technology Co Ltd
Priority date: 2010-07-19
Filing date: 2010-07-19
Publication date: 2011-03-16

Abstract

The invention relates to a projector which comprises an optical main body, as well as a sealing body for sealing the optical main body and conducting heat generated by the optical main body. The projector can obtain rapid heat dissipation and cooling in an environment which is not polluted by carrying out heat exchange through the sealing body and rapidly discharging the heat to the outside of the projector, thereby effectively ensuring the imaging quality.

Description

Projector

[technical field]

The present invention relates to a kind of image documentation equipment, especially a kind of projector.

[background technology]

In traditional projector, the heat of optical bodies is produced by the core image-forming block often, and for these core image-forming blocks, if its surperficial heat accumulation, then the image quality of projected image will deterioration.And, the optic modulating device of liquid crystal panel etc., because thermotolerance is relatively poor, the heating to the light beam irradiates from light supply apparatus causes might produce hot deterioration.Yet the cooling procedure of traditional projector is just from extraneous air draught, and subsidiaryly is blown into dust, oil smoke and dust etc., thereby can cause the pollution of projector's parts.

[summary of the invention]

Based on this, be necessary to provide a kind of projector that projector's parts are polluted, can dispel the heat again of avoiding.

A kind of projector comprises optical bodies, also comprises the described optical bodies of sealing and conducts the seal that heat that described optical bodies produces dispels the heat.

Preferably, described seal comprises housing and heat abstractor, the described optical bodies of described housing seal, and described heat abstractor and described housing are close to setting.

Preferably, described seal comprises housing and heat abstractor, is provided with and the suitable heat interchange hole of described heat abstractor in the described housing, and described heat abstractor passes described heat interchange hole.

Preferably, described housing comprises suitable top cover and bottom.

Preferably, described heat abstractor and described optical bodies are close to setting.

Preferably, described optical bodies is the LCOS optical bodies.

Preferably, described optical bodies is the DLP optical bodies.

Preferably, described optical bodies is the LCD optical bodies.

Above-mentioned projector carries out heat interchange by seal, and heat is discharged rapidly outside the projector, makes projector's cooling of being dispelled the heat rapidly in not contaminated environment, has guaranteed image quality effectively.

Above-mentioned projector is provided with in housing and the suitable heat interchange hole of heat abstractor, in time the heat that optical bodies produced is conducted to the external world.

In the above-mentioned projector, heat abstractor and optical bodies are close to setting, have increased the contact area with optical bodies, have improved radiating efficiency.

Above-mentioned projector can be applicable to the projector of variety classes chip, comprises LCOS projector, LCD projector and DLP projector, reaches multiduty radiating effect.

[description of drawings]

Fig. 1 is the structural drawing of LCOS projector among the embodiment;

Fig. 2 is the structural drawing of DLP projector among the embodiment;

Fig. 3 is the structural drawing of LCD projector among the embodiment.

[embodiment]

Projector comprises optical bodies and seals described optical bodies and conduct the seal that heat that described optical bodies produces dispels the heat.

Optical bodies is any in LCOS optical bodies, DLP optical bodies and the LCD optical bodies.Optical bodies is the part that produces heat in the projection machine optical system.

Seal comprises housing and heat abstractor, the housing seal optical bodies, and heat abstractor and housing are close to setting.

Among another embodiment, seal comprises housing and heat abstractor, is provided with and the suitable heat interchange hole of heat abstractor in the housing, and heat abstractor passes the heat interchange hole, and is close to setting with optical bodies.

Among first embodiment, Fig. 1 shows the detailed structure of a kind of DLP projector, and among this embodiment, optical bodies 100 is the DLP optical bodies, the optical bodies 100 of seal 200 sealing DLP projectors, the heat that conduction also produces in the cooling optical bodies 100.

Optical bodies 100 back sides are provided with digital micro-mirror wafer 110, and the fixed head 120 that is fastened to these optical bodies 100 back sides, and the suitable square hole of shape with digital micro-mirror wafer 110 is set in the middle of this fixed head 120.

Seal 200 comprises housing 220, and is close to the heat abstractor 240 in the housing 220.Housing 220 is a square body, comprises top cover 222 and bottom 224, inwardly forms and accommodates cavity, to accommodate optical bodies 100.Arc notch 2222 and the square breach 2242 suitable with optical bodies 100 are set in the housing 220, arc notch 2222 is suitable with lens shape, make camera lens pass arc notch 2222 and place housing 220 outsides, and optical bodies 100 is connected with external unit by square breach 2242.

Heat abstractor 240 comprises heat-conducting plate 242, heating radiator 244 and the heat pipe 246 that connects heat-conducting plate 242 and heating radiator 244.Particularly, heating radiator 244 is made up of one or more fin-shaped heat radiator, is close to setting with top cover 222.And heat-conducting plate 242 places housing 220, and for square, the centre is provided with a boss 2422, and this boss 2422 is suitable with digital micro-mirror wafer 110.Heat pipe 246 passes housing 100 tortuous heating radiator 244 and the heat-conducting plates 242 of connecting, and heat pipe 246 is preferably silver-colored pipe, copper pipe or aluminum pipe.

Among second embodiment, Fig. 2 shows the structure of LCOS projector, and in this LCOS projector, optical bodies 300 is the LCOS optical bodies, seal 400 seals optical bodies 300 and is close to setting with optical bodies 300, and the heat that produces in the optical bodies 300 is also cooled off in conduction.

Seal 400 comprises housing 420 and heat abstractor 440, and housing 420 inwardly forms the space of accommodating optical bodies, comprises top cover 422 and bottom 224.Square heat interchange hole 428 is set in the bottom 424, suitable with heat abstractor 440.Heat abstractor 440 is a heating radiator, be arranged in the heat interchange hole 428 of bottom 424, be square, the bottom is that 442, three edges of hot fin of barrier shape vertically are provided with heat radiator 446, forms the host cavity 448 of semi open model, to accommodate the bigger part of thermal value in the optical bodies 300, and fit tightly, increase area of dissipation, thereby improve the effect of LCOS projector heat radiation.Particularly, this heat abstractor 440 is suitable and be arranged in the heat interchange hole 428 with the profile in heat interchange hole 428.And hot fin 442 is arranged at bottom 424 outsides, and can accelerate the radiating rate of LCOS projector by the fan (not shown) that is arranged at housing 420 outsides, thereby improves the efficient of heat radiation.In other embodiments, heat abstractor 440 also can one-body moldedly be provided with housing 420.

Among the 3rd embodiment, Fig. 3 shows the structure of LCD projector, and among this embodiment, optical bodies 500 is the LCD optical bodies, the optical bodies 500 of seal 600 sealing LCD projectors, the heat that conduction and cooling optical bodies 500 produce.

Seal 600 comprises housing 620, and heat abstractor 640, and housing 620 inwardly forms the space of accommodating optical bodies, comprises top cover 622 and bottom 624.The square heat interchange hole 628 suitable with heat abstractor 640 is set in the bottom 624.Arc notch 6222 and the square breach 6242 suitable with optical bodies 500 are set in the housing 620, arc notch 6222 is suitable with lens shape, make camera lens pass arc notch 6222 and place housing 620 outsides, and optical bodies 500 is connected with external unit by square breach 6242.

The air channel 646 that heat abstractor 640 comprises the heat exchanger 642 of conduction optical bodies 500 heats, the corresponding fan 644 that heat of cooling air is set with heat exchanger 642, connect as one optical bodies 500 and fan 644, and heat exchanger 642 be close to the semiconductor cooler 646 of setting and be close to the heating radiator 648 of setting with semiconductor cooler 646.Among one embodiment, heat exchanger 642 places on the heat interchange hole 628, be close to setting with camera lens, be close to heat exchanger 642 and conduct heat on the heating radiator 648 and semiconductor cooler 646 passes heat interchange hole 628, so that heat exchanger 642 turns cold rapidly, and hot-air cools off under the effect of heat exchanger 642 and fan 644, in heat exchanger 642 suction fans 644, through air channel 646 cooling liquid crystal panel assemblies, so circulate and realize cooling at last.

The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.

Claims

1. a projector comprises optical bodies, it is characterized in that, also comprises the described optical bodies of sealing and conducts the seal that heat that described optical bodies produces dispels the heat.

2. projector according to claim 1 is characterized in that described seal comprises housing and heat abstractor, the described optical bodies of described housing seal, and described heat abstractor and described housing are close to setting.

3. projector according to claim 1 is characterized in that described seal comprises housing and heat abstractor, is provided with and the suitable heat interchange hole of described heat abstractor in the described housing, and described heat abstractor passes described heat interchange hole.

4. projector according to claim 3 is characterized in that described housing comprises suitable top cover and bottom.

5. projector according to claim 3 is characterized in that, described heat abstractor and described optical bodies are close to setting.

6. according to each described projector in the claim 1 to 5, it is characterized in that described optical bodies is the LCOS optical bodies.

7. according to each described projector in the claim 1 to 5, it is characterized in that described optical bodies is the DLP optical bodies.

8. according to each described projector in the claim 1 to 5, it is characterized in that described optical bodies is the LCD optical bodies.