Patent ID: 7226189

Claim:
A light emitting diode illumination apparatus, comprising: a light bulb base, having a groove base for installing different components and a connector disposed at the bottom for electrically coupling with an external circuit; a heat dissipating device, having an end coupled into said groove base of said light bulb base and the other end contacted with a metal substrate under normal conditions; a plastic lid, fixed into said groove base and having a circular groove for accommodating said heat dissipating device and a drive substrate; the metal substrate, installed in the circular groove base and having a plurality of light emitting diodes, and said each light emitting diode being controlled by said drive substrate, and said drive substrate being coupled with the connector; and a circular insulating base, disposed above said circular groove and having a circular edge for pressing the drive substrate and the metal substrate below for fixing said substrates into position, and said circular insulating base having a casing disposed on said circular insulating base; such that said heat dissipating device is in contact with said substrates under normal conditions, and a heat source produced by said light emitting diodes is conducted from said metal substrate to said heat dissipating device and dispersed effectively from said heat dissipating device for maintaining a light emitting efficiency of said each light emitting diode.