A light emitting device utilizing a plurality of light emitting diodes (LEDs). LEDs with R/G/B colors are specially arranged to obtain a better light mixing effect. A specially designed heat sink structure is provided to enhance the heat dissipation of LEDs so as to increase the LED density, to decrease...http://www.google.co.uk/patents/US6255786?utm_source=gb-gplus-sharePatent US6255786 - Light emitting diode lighting device
