An LED lamp includes LED chips, an axle, and a lampshade. The LED chips are mounted on surface of the axle. The axle extends across the lampshade. A heat pipe is installed inside the axle for transferring the heat generated by the LED chips to exterior of the lampshade and obtaining a better heat di...http://www.google.se/patents/US7314291?utm_source=gb-gplus-sharePatent US7314291 - LED lamp
