Abstract: The present invention relates to an LED lighting device comprising: a power case main body wherein one side is opened to form a receiving space inside, and a lamp terminal is provided to be electrically connected to a lamp socket on an end of the other side; a main body heat sink which surrounds a part or most of an outer circumference of the power case main body, and is combined to one side of the open power case main body; a plurality of lamp heat sinks which are protruded and combined to contact one side of the main body heat sink to conduct heat with the main body heat sink and forms a radiation structure around a central shaft formed according to a protruded direction; and a main LED module which contacts and is combined to an outer side end in a radiation direction of the lamp heat sink to conduct the heat with the lamp heat sink.