A bulb comprises a seat; a plurality of metal heat sink each having two fixing surfaces, one fixing surface being fixed with an light emitting chip; and one end of each metal heat sink being placed into an insulated frame and then being fixed to a supporting surface of a heat conductive base; the metal...http://www.google.ca/patents/US7165866?utm_source=gb-gplus-sharePatent US7165866 - Light enhanced and heat dissipating bulb
