Backlight unit and liquid-crystal display device
A backlight module and heat dissipation device technology, which is applied in the direction of lighting devices, fixed lighting devices, cooling/heating devices of lighting devices, etc., can solve the problems of reduced heat dissipation efficiency, achieve efficient heat dissipation, and improve the effect of heat dissipation efficiency
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no. 1 example
[0025] Please refer to figure 1 As shown, the backlight module of this embodiment has a light source 1 , an aluminum extrusion 2 and a front frame 3 .
[0026] The front frame 3 is arranged on the adjacent side of the aluminum extrusion 2 , and its limiting portion in this embodiment is a rib 33 protruding from the inner wall of the horizontal plate 31 of the front frame 3 . When the front frame 3 is assembled on the backlight module, the rib 33 is pressed against the light source 1 to fasten the light source 1 and the aluminum extrusion 2 . In this way, the light source 1 and the aluminum extrusion 2 can be kept in close contact, and the heat conduction efficiency of the aluminum extrusion 2 can be exerted. In this embodiment, the rib 33 is not in contact with the optical component 4 of the backlight module, which can reduce the impact on the optical component 4 .
[0027] In this embodiment, the position of the rib 33 can be adjusted according to the thickness of the ligh...
no. 2 example
[0029] Please refer to figure 2 As shown, in this embodiment, the limiting part still adopts the structure of the raised rib in the first embodiment (the reference number 34 in this embodiment), and the raised rib 34 is arranged on the inner wall of the horizontal plate 31 . In addition, a concave cavity 5 for accommodating the above-mentioned rib 34 is formed between the light source 1 and the optical member 4 . The optical member 4 includes a diffuser plate, a prism, a diffuser plate, a light guide plate, and the like from top to bottom. The optical member 4 is attached to the light emitting side of the light source 1 .
[0030] When the front frame 3 is assembled on the backlight module, the rib 34 is located in the concave cavity 5 formed between the light source 1 and the optical component 4 . The rib 34 has two slopes, one of which is pressed against the light source 1 , and the other is pressed against the optical component 4 , so that the light source 1 and the alum...
no. 3 example
[0034] Please refer to image 3 As shown, the difference between this embodiment and the first embodiment is that the limiting portion is embodied as a boss 35 . The protrusion 35 presses against the light source 1 to fasten the light source 1 and the aluminum extrusion 2 . In this way, the light source 1 and the aluminum extrusion 2 can be kept in close contact, and the heat conduction efficiency of the aluminum extrusion 2 can be exerted. In this embodiment, the protrusion 35 is not in contact with the optical component 4 of the backlight module, which can reduce the impact on the optical component 4 .
[0035] In this embodiment, the position of the protrusion 35 can be adjusted according to the thickness of the light source 1 and the aluminum extrusion 2 , as long as the protrusion 35 can press against the light source 1 when the front frame 3 is assembled.
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