LED LIGHTING DEVICE USING HEAT-SINK BODY

摘要

PURPOSE: An LED device is provided to prevent pressure rise inside a heat sink by including a negative pressure valve or pressure controller. CONSTITUTION: A heat sink(110) is made of aluminum. An upper groove and a lower groove are formed on the heat sink. The diameter of an upper groove is smaller than the diameter of a lower groove. A light emitting module(120) is received in the lower groove of the heat sink. A light emitting module is comprised of a plurality of LED(Light Emitting Diode)s. A packing ring(130) is combined along the inner circumference of the upper groove of the heat sink. A cover unit(140) is combined with the inner circumference of the packing ring. A power supply module supplies a DC current to the light emitting module.