LED light source module with heat guiding system and radiation system

Abstract

The invention relates to an LED light source module which has a heat conductivity system and a radiation system. The invention is used in a direct illumination-type BLU, comprising a circuit board, and a plurality of LEDs which are electrically connected, wherein the lights that are sent out by the LED is irradiated on an LCD trough a light diffusion component, a light reflection component which can reflect backwards the leaking light of the LED is arranged on the other side of the circuit board, and the above components are evenly arranged in a casing, wherein a layer of heat conductivity translucent material is coated on the LED, a heat insulation translucent component is arranged between the heat conductivity translucent material and the light diffusion component, a radiation space is formed between the heat insulation translucent component and the heat conductivity translucent material, and the casing forms at least two air convection hole relatively to the radiation space, thereby flowing out and radiating heat sent out by the LED as soon as possible, reducing temperature in the LED light source module, steadying the color balance of the module, and prolonging the service life of the module.

Description

technical field [0001] The invention relates to a direct type LED backlight module. Background technique [0002] Liquid crystal display devices (LCD) are widely used in very broad fields such as computer liquid crystal display screens, liquid crystal televisions, and outdoor advertisements. However, the LCD itself does not emit light, but relies on the backlight unit (BLU) provided under the LCD to provide a light source. By controlling the pixel electrodes on the LCD, color images with different brightness, different colors and different gray scales are formed. So BLU is one of the key components of LCD. [0003] According to the position of the light source, the BLU is divided into direct type BLU (the light source is placed under the backlight module) and side-light type BLU (the light source is placed on the side of the backlight module); according to the light source component, it is divided into light-emitting diode (LED) and cold cathode ray tube ( CCFL) etc. BLU. ...

AI Technical Summary

Problems solved by technology

[0006] 1. Since the general light diffusion element 13 does not have heat insulation effect, the heat of the LED will be transferred to the LCD14, causing the temperature of the LCD14 to be too high, affecting the display effect and service life of the LCD14

[0007] 2. Since the LED12 is installed in a closed space, the heat is difficult to dissipate, so that the temperature of the LED12 is relatively high, and the high temperature will cause inconsistent changes in the brightness of R, G, and B, which will affect the color balance of the BLU and affect the brightness of the LED12. service life

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