LED lamp and lamp/reflector assembly
View Patent ↗An LED lamp ( 10 ) having a substantially concave heat sink ( 12 ) having a raised, frusto-conical center ( 14 ) surrounded by an outer rim ( 16 ). The heat sink ( 12 ) is preferably aluminum or other metal and at least the frusto-conical center preferably has a reflective coating. To further aid in heat removal the outer rim ( 16 ) can be provided with a plurality of apertures ( 16 a ). A side-emitting LED ( 18 ) is mounted on the frusto-conical center ( 14 ). A cover ( 26 ) is fixed to the outer surface ( 22 ) and defines a volume ( 28 ) between the frusto-conical center ( 14 ) and the cover ( 26 ). A circuit ( 30 ) is located within the volume ( 28 ) and an electrical connection ( 32 ) provides connection to the LED ( 18 ). In another embodiment a cover ( 26 a ) is provided with studs ( 54 ) and a reflector ( 42 a ) is provided with studs ( 56 ) that engage barbs ( 50 ) formed in a heat sink ( 12 a ).
1. An LED light source for a vehicle comprising:
a substantially concave reflector having an aperture in its bottom;
an LED lamp having a substantially concave heat sink having a raised, frusto-conical center surrounded by an outer rim, said frusto-conical center being positioned within said aperture and being fixed to said reflector;
a side-emitting LED mounted on said frusto-conical center;
a circumferential planar area between said frusto-conical center and said outer rim having an outer surface and an inner surface;
a cover fixed to said outer surface in a manner to define a volume between said frusto-conical center and said cover;
a printed circuit board located in said volume having electrical connection to said LED; and
at least one electrical contact in said cover for carrying electrical charges to said printed circuit board.
2. The LED light source of claim 1 wherein said LED lamp is fixed to said reflector by a double-sided tape positioned between said inner surface of said circumferential planar area and said reflector.
3. The LED light source of claim 2 wherein said cover includes a flange and said flange is fixed to said outer surface.
4. The LED light source of claim 3 wherein said flange is fixed to said outer surface by a double-sided tape.
5. An LED source for a vehicle comprising:
a substantially concave reflector having an aperture in its bottom with an annular flat surface surrounding said aperture;
a plurality of reflector studs on said annular flat surface projecting rearward away from said reflector;
an LED lamp having a substantially concave heat sink with a raised, frusto-conical center surrounded by an outer rim, said frusto-conical center being positioned within said aperture;
a side-emitting LED mounted on said frusto-conical center;
a circumferential planar area between said frusto-conical center and said outer rim, said circumferential planar area having an outer surface and an inner surface;
a plurality of barbs formed in said circumferential planar area;
a cover fixed to said outer surface in a manner to define a volume between said frusto-conical center and said cover, said cover having a circumferential flange having a plurality of cover studs projecting forwardly toward said reflector;
a printed circuit board located in said volume having electrical connection to said LED; and
at least one electrical contact in said cover for carrying electrical charges to said printed circuit board; said reflector studs and said cover studs being engaged in said plurality of barbs formed in said circumferential planar area.
6. The LED light source of claim 5 wherein said LED lamp has a double-sided tape positioned between said inner surface of said circumferential planar area and said reflector.
7. The LED light source of claim 6 wherein said LED lamp has a double-sided tape between said cover flange and said outer surface.