Large-screen television with high brightness

Abstract

The invention discloses a large-screen television with the high brightness, consisting of a casing, a system circuit board, an optical projection system, a radiating structure and a display screen. The optical projection system comprises an optical engine and a reflecting mirror, wherein the optical engine is arranged on a lower hollow cavity of the casing, and provided with a light source, a filtering mirror, an optical system assembly and a protection lens; and the reflecting mirror is arranged on an upper hollow cavity, and a separator is arranged between the upper hollow cavity and the lower hollow cavity. The optical system assembly is sequentially provided with a first compound eye, an optical filter, a second compound eye, a polarizing sheet, a diachronic mirror, a prism and a micro-display chip according to the trend of optical paths; and the radiating structure consists of a radiating fan and an air flue, the air flue has two air inlet flues and four air outlets, and the four air outlets comprise a red-light air outlet, a blue-light air outlet, a green-light air outlet and a polarizing sheet air outlet. The brightness before the screen is well improved, and the uniformity problem of a picture can be solved with no obvious dark areas, and the whole machine power is low.

Description

technical field [0001] The invention belongs to a television set, in particular to a high-brightness large-screen television. Background technique [0002] At present, traditional TV sets mainly include plasma, liquid crystal, CRT picture tube TV (flat-screen CRT, ultra-flat CRT, ultra-thin CRT, etc.), rear projection TV (CRT rear projection, DLP rear projection, LCOS rear projection, LCD rear projection) , their brightness is around 200-550cd / m2. At present, the plasma on the market can reach more than 60 inches, and the LCD can reach more than 47 inches, but its disadvantages are the viewing angle and response speed, especially after a period of use, the brightness of the front screen is low; the main advantage of CRT picture tube TV is the viewing angle Large, fast response, good color reproduction, but its largest screen is only about 34 inches, and it is very thick and bulky, and consumes power. At present, rear projection (CRT rear projection, DLP rear projection, LC...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problems of visual fatigue and low brightness caused by the improvement of the brightness of existing TVs, the purpose of the present invention is to provide a high-brightness large-screen TV, which can not only improve the brightness of the front of the screen, but also solve the problem of uniformity of the screen. , there is no obvious dark area, and the whole machine has low power and high cost performance

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