PURPOSE: An LED light is provided to rapidly radiate heat from a light-emitting diode module by implementing efficient heat transfer through a heat sink in a heat tube. CONSTITUTION: In an LED light, a lens(2) is installed in the front side of a light-emitting diode module(1). A reflector(3) is installed outside the lens. A heat pipe(5) is installed in the back side of the light-emitting diode module. A heat pipe is filled with a cooling medium. The heat sink(6) is installed outside the heat tube. A heat pipe(7) is installed a thermal diffusion tube(8) between the heat pipe and the heat sink. A spiral groove(9) is formed in the outer circumference of the thermal diffusion tube. A spiral groove(10) is formed in the inner circumference of the heat sink.
