High efficiency bar light source

Abstract

The utility model discloses a kind of high-efficiency bar light source, it is related to the technical field of detecting light source.High-efficiency bar light source includes shell, light emitting component, cold air heat dissipation component and diffuser plate;Shell is provided with containing cavity, heat dissipation groove and opening;Light emitting piece is provided with multiple;Heat dissipation pad is abutted with the top end of circuit board and resistance;Heat dissipation pad is abutted with the side wall and top wall of containing cavity, and cover is set in the notch of heat dissipation groove;Multiple resistance is along first horizontal direction and second horizontal direction interval arrangement;Cold air heat dissipation component can input cold air from one vent to heat dissipation groove.The heat generated in the working process of light emitting component can be more evenly conducted to heat dissipation pad, cold air can absorb the heat of shell, the cold air in heat dissipation groove can contact with the top of heat dissipation pad, so that cold air can directly absorb the heat of heat dissipation pad, improve the heat dissipation effect of light emitting component, guarantee the working efficiency of this high-efficiency bar light source.

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