Patent ID: 8087808

Claim:
A flashlight comprising: a handle assembly having a housing having a front end; an inner surface; an outer surface; a dissipating section defined around the outer surface near the front end of the housing and having a front segment; and a rear segment; and multiple vents defined through the dissipating section, each vent having a cross section less than one twentieth of an outer surface measure of the dissipating section; a heat sink mounted in the housing and having a front end; a rear end; a connecting section defined around the front end of the heat sink; a tube having a front end, a rear end and an outer surface; two flanges protruding from the outer surface of the tube, abutting the inner surface of the housing and respectively near the front segment and the rear segment of the dissipating section; and two O-rings respectively mounted around the flanges and abutting the inner surface of the housing; and an electrical unit mounted in the housing and detachably mounted on the rear end of the heat sink; and a lens cover securely mounted on the front end of the housing and having a shell mounted securely on the front end of the housing; and an LED element mounted in the shell and mounted securely on the connecting section and having an LED electrically connected with the electrical unit with wires.