Patent ID: 8568000
Filing Date: 2013-10-29
Classification: F21V

Abstract:
1. An annular-arranged lamp capable of backward projecting by concave sphere, in which two or more than two light emitting devices arranged in a circular or polygonal means being annularly installed at the side of annular heat dissipation device to be installed with light emitting devices of the lamp, the light projection axial line of each light emitting device is defined in a reverse direction which is 90 degree larger but 180 degree smaller relative to the preset final projecting direction for illuminating light of the lamp for projecting towards a reflection device with concave sphere disposed above the annular heat dissipation device, the project surface after being reflected by a concave spherical reflection unit of the reflection device with concave sphere is coaxial with the final projecting direction for illuminating light beams, light beams of the light emitting devices are reflected by the reflection device with concave sphere then refracted to a preset projection range, thereby forming a unified light source, and it mainly consists of: annular heat dissipation device ( the side of annular heat dissipation device to be installed with light emitting devices ( reflection device with concave sphere ( concave spherical reflection unit ( wherein it is further formed in a fluid cooling type structure having flowpath therein, and it mainly consists of: fluid cooling type annular heat dissipation device assembly (