Radiator of helical type and led lighting apparatus of bulb type using the same

PURPOSE: A helix type radiator and a bulb type LED lighting device thereof are provided to implement an LED lighting device as compact size by combining an LED package and a heat-sink device. CONSTITUTION: An LED package(10) includes a plurality of LEDs(13). A screw cap(70) applies power to the LED package. A body(31) is arranged between the LED package and the screw cap. A cooling fin(32) is spirally expanded and formed with a uniform interval along the longitudinal direction of the body. The body includes a plurality of convection holes for communicating the center midway and the outside. The body forms a settling groove inside the center midway.