Backlight module convenient to dissipate heat and liquid crystal display

Abstract

The invention relates to the technical field of liquid crystal displays, in particular to a backlight module convenient to dissipate heat and a liquid crystal display. The backlight module comprises an enclosure, wherein a liquid crystal display screen and a backlight panel are fixedly connected with an inner side of the enclosure and are arranged in a front-back way, first sliding grooves are formed in front ends of inner sides of a left end surface and a right end surface of the enclosure, a sliding block is connected with an inner side wall of the first sliding groove in a left side in a sliding way, a brush is rotatably connected with a right end surface of the sliding block, a groove is formed in a front end of an inner side of a bottom end surface of the enclosure, the brush is arranged at an inner side of the groove, a first rack and a fixed box are arranged at an inner side wall of the first sliding groove in a right side and are arranged in a left-right way, and the first rackis fixedly connected with the enclosure. By arrangement of the brush, upward and downward moving can be simultaneously performed during rotation in a way of matching a 280 motor, a first gear, the sliding block and the first rack, so that cleaning of the liquid crystal display screen is achieved very well, and the influence of dust on heat generation of the liquid crystal display is prevented.

Description

technical field [0001] The invention relates to the technical field of liquid crystal displays, in particular to a backlight module and a liquid crystal display which are convenient for heat dissipation. Background technique [0002] Liquid crystal display is a passive light-emitting element. The display screen itself does not emit light, but is illuminated by the backlight system below it. The combination of the backlight source and the liquid crystal display screen constitutes a liquid crystal display module. The liquid crystal backlight is a flat uniform lighting device At present, there are mainly three types of backlight sources: EL, CCFL and LED. According to the position of the light source, they are divided into side-light type and direct-light type. There will be certain defects in the use of CCFL backlight. Therefore, for a The demand for backlight modules and liquid crystal displays that are easy to dissipate heat is increasing day by day. [0003] At present, so...

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Problems solved by technology

[0003] At present, some LCD screens on the market are easy to be covered with dust during use. As the dust continues to increase, it will affect the normal heat dissipation of the LCD screen. In the closed state, the dust on the surface of the LCD screen will even affect The overall appearance is beautiful, and artificial regular maintenance also increases the fatigue of the cleaners to a certain extent. There is an obvious shortcoming in some CCFL backlight devices that are easy to heat up, and the effect of the backlight will be affected as the heating time increases. , which shortens the service life of the device, therefore, a backlight module and a liquid crystal display that are easy to dissipate heat are proposed in view of the above problems

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