Patent ID: 8104916

Claim:
A flashlight, comprising: a heat dissipative front cover, being a front cover body having heat dissipation function, which is provided with a waterproof rubber ring and a light transmissive lens inserted in its interior; a light source body, being a light source unit for producing light, which is provided in the interior of the heat dissipative front cover; a conductive heat dissipative element which is provided with a front and a rear thread segments respectively on the front and rear ends of the outer wall, and waterproof gaskets provided at neighbor sides of the front and the rear thread segments, said front thread segment being in thread engagement with the heat dissipative front cover so that the light source body can be clamped and fixed therebetween; a plastic housing, having a inner thread segment provided at its front end which is in thread engagement with the rear thread segment of the conductive heat dissipative element; and a outer thread segment provided at its tail end and a waterproof gasket provided at neighbor side; and two opposite locating slots and two opposite positioning slots provided at the inner wall of the housing, the locating slots being for locating and fixing the conductive strips one ends of which are contacted with the conductive heat dissipative element, while the positioning slots being used for the guiding and positioning of battery having slide bars; a conductive seat, inserted into the tail end of the plastic housing to cover and to contact the conductive strips, which has guide slots provided at the places corresponding to the positioning slots of the plastic housing for the guide-in of battery; a plastic tail cover, having a inner thread segment which is in thread engagement with a outer thread segment provided at tail end of the plastic housing, a waterproof cap and a smart controller being provided in the interior of the tail cover, a conductive ring strip for contact with the conductive seat being provided on the smart controller.