Patent ID: 8876351
Filing Date: 2014-11-04
Classification: F21S,F21V,F21Y,G02B,Y10S

Abstract:
1. A light emitting diode lamp comprising: a heat dissipation module comprising: a heat-conducting base having a containing concave; and a heat dissipation element having a connection portion and a surround portion, the surround portion connecting the heat-conducting base via the connection portion, the heat dissipation element surrounding a circumference of the heat-conducting base, and a distance being between the surround portion and the heat-conducting base; a circular light guide plate configured in the containing concave and having a top surface, a bottom surface, and an annular side surface connecting the top surface and the bottom surface, the top surface facing the heat-conducting base and having a plurality of concentric annular trenches, wherein a trench shape of each of the concentric annular trenches on a cross section surface passing through the center of the circular light guide plate and perpendicular to the top surface is symmetrical; and a plurality of light emitting diode light sources configured in the containing concave and facing the annular side surface of the circular light guide plate, the light emitting diode light sources being capable of emitting a light beam, the light beam being capable of passing through the annular side surface to enter the circular light guide plate and capable of being reflected by the annular trenches and emitted from the bottom surface.