Radiator and led lighting apparatus using the same

PURPOSE: A radiating part and an LED light device using the same are provided to effectively emit heat to the outside by forming an opening on a hollow body and forming a heat radiation fin on the inside and the outside of the body. CONSTITUTION: LEDs are mounted on one side of a metal circuit board(13) in an LED module(15). A driver circuit module(17) is positioned on the other side of the metal circuit board and forms a drive circuit driving the LEDs. First openings(25,29) radiate the heat generated in the LEDs to the outside due to conduction and convection. A screw cap(33) is combined with one end of an upper hemispherical part. A lower hemispherical part(31) is coupled with the upper hemispherical part.