Patent ID: 6789923
Filing Date: 2004-09-14
Classification: F21V,G02B,G02F

Abstract:
A backlight module comprising:a casing forming an interior space defined by a bottom wall and a circumferential side wall, the side wall extending from the bottom wall and defining an open top adapted to receive and fix an optic panel; a plurality of lamps arranged in the interior space and spaced from each other; and a heat dissipation structure comprising: first vent holes defined in the side wall to allow air to flow in and out of the interior space for removing heat generated by the lamps, second vent holes defined in the side wall, the second vent holes being paired and opposite to each other, and a channel mounted to the bottom wall and arranged between adjacent lamps, the channel being formed by two inclined side walls to form an air passage between the two second vent holes of each pair whereby air is allowed to flow in and out of the channel through the second vent holes to form an air flow through the channel, the side walls of each channel being arranged to reflect light from the adjacent lamp toward the open top of the casing and thus the optic panel.