Patent ID: 8616736

Claim:
A circular plate lamp made of circular light-reflecting plate, said circular plate lamp comprising: a circular fight-reflecting plate with triangular oriented micro-prisms having identical cross section, wherein a plurality of concentric annular micro prism bodies are arranged on the prism surface of said light-reflecting plate in the radial direction starting from the central axial line, the cross section of each prism body is triangle and the prism bodies are continuously arranged in zigzag form in the vertical section through the central axial line, wherein said triangles have the same shape and the same cross sectional area; the apex of the triangle closest to the central axial line has the shortest distance away from the smooth surface of the light-reflecting plate, and the apices of the triangles towards the periphery of the light-reflecting plate have the successively increasing distances away from the smooth surface of the light-reflecting plate; the radial connection lines among the apices of the triangles of the circular prism bodies are two inclined straight lines, intersecting at a point with the central axial line of the circular light-reflecting plate and forming an inclusion angle Î± with the smooth surface of said plate, and the inclusion angle Î± is <45Â° and the distance or interval of all triangles is equal in the diameter direction; a heat-dissipating frame; and a plurality of lamp bodies, wherein said heat-dissipating frame comprises a plate surface with a central throughhole and a circular plate edge around the plate surface, and the frame is sleeved around the light-reflecting plate so that the plate edge overlaps with the edge of the smooth surface of the light-reflecting plate, the lower part of the internal wall of the plate edge abuts with the flange of the light-reflecting plate, and the remaining part of the internal wall constitutes a gap with the cylindrical surface of the light-reflecting plate, thereby forming a circular lamp groove having the same axle with the central axle; said lamp bodies comprise LED, light bulbs, electrode tubes, or prefabricated LED assemblies having several LEDs, and are assembled in the circular lamp groove, respectively, wherein the emission plane of said LED intersects with the connection lines of the apices of said triangles and forms an inclusion angle of 90-Î±.