Patent ID: 7152994

Claim:
An LED flashlight comprising a housing having a cylinder and a rotating member mutually connected by means of an outer screw thread section and an inner screw thread section provided respectively on said cylinder and said rotating member, said cylinder and said rotating member are adapted to rotating relatively to each other; said housing of said flashlight has therein an LED circuit and a battery for supplying power; said flashlight is characterized in that: said LED flashlight further comprises a structure of switch to make turning on/off of said LED circuit by rotating said rotating member relatively to said cylinder; said rotating member is provided thereon with an elastic piece having a number of P typed arms each with an end forming a protruding portion; when said rotating member rotates, said elastic piece moves axially; an inner wall of said cylinder is provided at a position contacting said protruding portions of said elastic piece with an annular recess; when in circuit breaking of said flashlight, said protruding portions of said elastic piece are exactly located in said annular recess of said cylinder and thereby is in a state of none contact; and when said rotating member rotates relatively to said cylinder, said rotating member moves said elastic piece axially to move said protruding portions over said annular recess and contact with said inner wall of said cylinder, thus said LED circuit is turned on to emit light for illumination.