CN101986203B

CN101986203B - Heat pipe heat radiating system of digital light processing (DLP) projector

Info

Publication number: CN101986203B
Application number: CN 201010230794
Authority: CN
Inventors: 崔凯; 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: 2013-05-29
Anticipated expiration: 2030-07-19
Also published as: CN101986203A

Abstract

The invention relates to a heat pipe heat radiating system of a digital light processing (DLP) projector. The system comprises an optical main body, a cover body for sealing the optical main body and a cooling device for conducting and radiating the heat generated by the optical main body, wherein the cooling device comprises a heat radiator, a heat conductive board and a heat pipe for connecting the heat radiator and the heat conductive board; the heat conductive board is tightly jointed with the heat source of the optical main body; the heat conductive board is arranged in the cover body; the heat radiator is arranged outside the cover body; and the heat pipe is connected with the heat conductive board and the heat radiator. The heat pipe heat radiating system of the DLP projector reduces the temperature of the optical main body so as to reach the optimal working temperature of the DLP projector, avoids the pollutions of dirt and dust on the optical main body so as to reach the effect of preventing the dust and reducing the temperature, and has good mute effect.

Description

DLP projector heat pipe cooling system

[technical field]

The present invention relates to a kind of projection imaging apparatus, relate in particular to a kind of DLP projector heat pipe cooling system.

[background technology]

The full name of DLP is " Digital Light Procession ", is digital light and processes, and namely wants elder generation the digital processing of signal of video signal process by this technology, and then light is projected.DLP projector has adopted digital micro-mirror wafer (DMD) to be used as main crucial treatment element to realize the digit optical processing procedure.Its principle is that the cold light source that will go out by the UHP lamps emission is by the condensation lens, by Rod with light uniformization, light after treatment is by a colour wheel (ColorWheel), light is divided into RGB three looks (perhaps RGBW etc. more polychrome), again with color by lens projects on dmd chip, reflection is through projection lens imaging on projection screen at last.

The imaging system of projector is the core of projector, if occur dust, oil smoke and dust etc. in optical element wherein or the image-forming component, can cause the pollution of parts, thereby affect contrast, color and the serviceable life of projector.And projector also can produce a large amount of heats in when work, and the gathering of heat so that projector produces heat is deteriorated, has seriously reduced the image quality of projected image.

[summary of the invention]

Based on this, be necessary to provide a kind of DLP projector heat pipe cooling system that namely can prevent dust and can reduce temperature.

A kind of DLP projector heat pipe cooling system, comprise optical bodies, also comprise lid and the conduction that seals described optical bodies and distribute the cooling device of the heat that described optical bodies produces, described cooling device comprises heating radiator, heat-conducting plate and the heat pipe that connects heating radiator and heat-conducting plate, the thermal source of described heat-conducting plate and optical bodies is close to setting, described heat-conducting plate is arranged in the lid, and described heating radiator is arranged on outside the lid, and described heat pipe connects heat-conducting plate and heating radiator; Described lid comprises top cover and bottom, is used for accommodating and sealing described optical bodies; Described heat-conducting plate is square, and the centre is provided with boss, the suitable and applying of described boss and described digital micro-mirror wafer; Described optical bodies comprises camera lens, and optical module is arranged on digital micro-mirror wafer and the fixed head at the described optical module back side; Be provided with square hole in the middle of the described fixed head, and suitable with described digital micro-mirror wafer.

Preferably, described heating radiator comprises at least one fin-shaped heat radiator.

Preferably, described heat pipe is silver, copper or aluminium.

DLP projector heat pipe cooling system so that the temperature of optical bodies reduces, reaches the working temperature of DLP projector the best by heating radiator, heat-conducting plate and the cooperation of heat pipe that connects heating radiator and heat-conducting plate; The lid of sealing is accommodated optical bodies, and preferably sealing is arranged, so that extraneous dust or dust can't enter the inside of sealing box body; Avoid dust, dust to the pollution of optical bodies, reached the effect that namely can prevent dust and can reduce temperature.

In addition, DLP projector adopts heat pipe radiating system, can omit mechanical fans and dispel the heat, and has good muting function.

Heating radiator by the heat radiator of at least one dish shape consists of has increased area of dissipation, has better radiating effect.

Heat pipe adopts silver, copper or aluminium, has better heat-conducting effect.

[description of drawings]

Fig. 1 is the synoptic diagram of DLP projector heat pipe cooling system among the embodiment;

Fig. 2 is the cut-away view of DLP projector heat pipe cooling system among the embodiment;

Fig. 3 is the explosive view of DLP projector heat pipe cooling system among the embodiment;

Fig. 4 is the cooling device scheme of installation of DLP projector heat pipe cooling system among the embodiment;

Fig. 5 is the cooling device one angle scheme of installation of DLP projector heat pipe cooling system among the embodiment;

Fig. 6 is another angle scheme of installation of cooling device of DLP projector heat pipe cooling system among the embodiment;

Fig. 7 is the cooling device structural drawing of DLP projector heat pipe cooling system among the embodiment.

[embodiment]

Referring to Fig. 1～7, a kind of DLP projector heat pipe cooling system comprises lid 100, cooling device 200 and optical bodies 300.Lid 100 is accommodated optical bodies 300 and by cooling device 200 conduction and distribute the heat that optical bodies 300 produces.

Lid 100 is interior hollow, is used for accommodating and seal optical bodies 300, comprises top cover 110 and bottom 120.Top cover 110 and bottom 120 be corresponding circular arc cutaway 130 and the square breach 140 of arranging respectively.Top cover 110 tops are provided with screw 111, bottom and the screw 111 corresponding fixed legs 121 that are provided with.Screw passes screw 111 and is fixed in fixed leg 121, so that top cover 110 and bottom 120 closures.Arc notch 130 in top cover 110 and the bottom 120 merges, and forms circumferential notch, and is suitable with camera lens 310 shapes, makes camera lens 310 pass circumferential notch as for lid 100 outsides.

Optical bodies 300 comprises camera lens 310, optical module 320, is arranged on the dmd chip at optical module 320 back sides (digital micro-mirror wafer) 330 and fixed head 340.This fixed head 340 is fixed in the back side of optical module 320, and dmd chip 330 is installed on the fixed head 340, is provided with square hole in the middle of the fixed head 340, and is suitable with dmd chip 330, so that dmd chip 330 is exposed at fixed head 340 outsides.

Cooling device 200 comprises heating radiator 210, heat-conducting plate 230, and the heat pipe 220 that connects heating radiator 210 and heat-conducting plate 230.This cooling device adopts hot pipe technique, and particularly, heating radiator 210 is comprised of at least one fin-shaped heat radiator; Heat-conducting plate 230 is square, and the centre is provided with boss 231, and this boss 231 and dmd chip 310 suitable and applyings can make dmd chip in time conduct heat; Heat pipe 220 connects heating radiator 210 and heat-conducting plate 230, and this heat pipe 220 is preferably silver, copper or aluminium.Heat-conducting plate 230 is arranged in the lid 100, and heating radiator 210 is arranged on outside the lid, and heat pipe 220 connects heat-conducting plate 230 and heating radiator 210.When projector worked, optical bodies 300 produced large calorimetric, and especially dmd chip 330.The heat-conducting plate 230 of cooling device 200 is close to setting with the thermal source of optical bodies 300, producing adstante febre heat-conducting plate 230 in optical bodies 300 is heated, heat pipe 220 conducts to heating radiator 210 to the heat of heat-conducting plate 230, and this heating radiator 210 is passed to lid 100 outsides to heat.

In addition, the colour wheel 400 that is connected with optical bodies 300 in addition, this colour wheel 400 is arranged in the metal guiding element 410, and heat pipe 220 passes this metal guiding element 410.Colour wheel 400 operations also produce heat, and pass to metal guiding element 410, and metal guiding element 410 passes to heat to heat pipe 220, and heat pipe 220 passes to heat to heating radiator 210, reaches in time to pass to the heat that colour wheel 400 produces.

By heat pipe radiating system the heat that optical bodies 300 produces is conducted, assurance DLP projector can work normally.The lid 100 sealing optical bodies 300 of sealing, and closed, so that extraneous dust or dust can't enter the inside of lid 100, reach good dust-proof effect, guaranteed that optical bodies 300 can projection go out high image quality.

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. DLP projector heat pipe cooling system, comprise optical bodies, it is characterized in that, also comprise lid and the conduction that seals described optical bodies and distribute the cooling device of the heat that described optical bodies produces, described cooling device comprises heating radiator, heat-conducting plate and the heat pipe that connects heating radiator and heat-conducting plate, and the thermal source of described heat-conducting plate and optical bodies is close to setting, and described heat-conducting plate is arranged in the lid, described heating radiator is arranged on outside the lid, and described heat pipe connects heat-conducting plate and heating radiator;

Described lid comprises top cover and bottom, is used for accommodating and sealing described optical bodies;

Described heat-conducting plate is square, and the centre is provided with boss, the suitable and applying of described boss and digital micro-mirror wafer;

Described optical bodies comprises camera lens, and optical module is arranged on digital micro-mirror wafer and the fixed head at the described optical module back side;

Be provided with square hole in the middle of the described fixed head, and suitable with described digital micro-mirror wafer.

2. DLP according to claim 1 projector heat pipe cooling system is characterized in that described heating radiator comprises at least one fin-shaped heat radiator.

3. DLP according to claim 1 projector heat pipe cooling system is characterized in that, described heat pipe is silver, copper or aluminium.