An LED illuminating device includes a light-emitting module, a heat sink and an electrical module. The light-emitting module includes an elongated hollow light penetrable tube and a light source. The heat sink is received in and mounted to the light penetrable tube, and includes an elongated base and...http://www.google.es/patents/US8047674?utm_source=gb-gplus-sharePatente US8047674 - LED illuminating device
