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

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

【Technical field】 [0001] The invention relates to a projection imaging device, in particular to a DLP projector heat pipe cooling system. 【Background technique】 [0002] The full name of DLP is "Digital Light Processing", that is, digital light processing, that is, through this technology, the image signal must be digitally processed first, and then the light is projected out. DLP projectors use a digital micromirror chip (DMD) as the main key processing element to achieve digital optical processing. The principle is to pass the cold light source emitted by the UHP bulb through the condensing lens, and to homogenize the light through the Rod. The processed light passes through a color wheel (Color Wheel), and the light is divided into RGB three colors (or RGBW and other more colors) ), and then the color is projected on the DMD chip by the lens, and finally reflected and imaged on the projection screen through the projection lens. [0003] The imaging system of the project...

AI Technical Summary

Problems solved by technology

[0003] The imaging system of the projector is the core of the projector. If there is dust, soot and dust in the optical components or imaging components, it will cause contamination of the components, which will affect the contrast, color and service life of the projector.

Moreover, when the projector is working, it will also generate a large amount of heat, and the accumulation of heat will cause thermal deterioration of the projector and seriously reduce the imaging quality of the projected image.

Images