Solid state lighting device
First Claim
1. A solid state lighting device comprisinga relatively rigid, thermally conductive, reflective plate having opposite sides;
- a mounting frame having opposite first and second sides and an open center;
a printed circuit board with front and back sides and a plurality of LEDs mounted to the front side, the back side of the board being substantially flat, said board being supported by the frame so that the back side of the board is more or less flush with the first side of the frame and the LEDs are opposite said open center;
a cup-like light diffuser having a rim engaged over the second side of the mounting frame so that the diffuser surrounds the frame and covers the LEDs, said frame, printed circuit board and diffuser constituting a first subassembly, andfastening devices for fastening the first subassembly against one side of the plate so that said back side of the board is pressed against the plate and the diffuser rim abuts the plate, whereby when the LEDs are energized, a maximum amount of light from the LEDs is directed through the diffuser and waste heat from the LEDs is efficiently conducted away by the plate.
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Accused Products
Abstract
A solid state lighting device includes a thermally conductive plate having a subassembly mounted to at least one side of the plate. Each subassembly includes a mounting frame with a back side and an open center, and a PCB supporting a plurality of LEDs with electrical leads extending therefrom. The PCB is supported by the frame so that the back of the PCB is flush with the back side of the frame. A cup-like light diffuser having a rim is secured to the front of the frame so that it surrounds the frame and covers the LEDs. Fastening devices fasten the subassembly against the one side of the plate so that the back of the PCB is in intimate thermal contact with the plate and the diffuser rim abuts the plate so that when the LEDs are energized via their leads, a maximum amount of light from the LEDs is directed through the diffuser and waste heat from the LEDs is efficiently conducted away by the plate which may also constitute a reflector.
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Citations
30 Claims
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1. A solid state lighting device comprising
a relatively rigid, thermally conductive, reflective plate having opposite sides; -
a mounting frame having opposite first and second sides and an open center; a printed circuit board with front and back sides and a plurality of LEDs mounted to the front side, the back side of the board being substantially flat, said board being supported by the frame so that the back side of the board is more or less flush with the first side of the frame and the LEDs are opposite said open center; a cup-like light diffuser having a rim engaged over the second side of the mounting frame so that the diffuser surrounds the frame and covers the LEDs, said frame, printed circuit board and diffuser constituting a first subassembly, and fastening devices for fastening the first subassembly against one side of the plate so that said back side of the board is pressed against the plate and the diffuser rim abuts the plate, whereby when the LEDs are energized, a maximum amount of light from the LEDs is directed through the diffuser and waste heat from the LEDs is efficiently conducted away by the plate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A solid state light source comprising
a relatively rigid, thermally conductive plate having opposite sides; -
a pair of similar subassemblies mounted in opposition at the opposite sides of said plate, each subassembly including a circuit board with front and back sides and at least one LED mounted to the front side, the back side of the board being substantially flat and secured to the adjacent side of the plate so that said back side is in intimate thermal contact with the plate whereby any heat from the at least one LED is conducted away by the plate, and a cup-like light diffuser having a rim secured to the adjacent side of the plate so that the diffuser substantially covers the at least one LED whereby light from the at least one LED radiates into the diffuser; a base with a plurality of electrical contacts and adapted to be coupled to a lamp socket to establish electric connections therewith; mounting structure for mounting the base to the plate so that the base is substantially parallel to the plate, and an electrical connection device connecting the LED to the at least one electrical contacts in the base. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
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30. A solid state lighting device comprising
a relatively rigid, thermally conductive, reflective plate having opposite sides; -
a printed circuit board with front and back sides and a plurality of at least one LEDs mounted to the front side, the back side of the board being substantially flat; a cup-like diffuser having a rim, said board and said rim being secured to one side of the plate so that the back side of the board is in intimate thermal contact with the plate and the diffuser substantially covers the LEDs whereby when the LEDs are is energized, a maximum amount of light therefrom radiates is directed into the diffuser and waste heat from the LEDs is efficiently conducted away by the plate, said circuit board and diffuser constituted a first subassembly; a fastening device for fastening the first subassembly against said one side of said plate; a second subassembly substantially identical to the first subassembly, and a second fastening device for fastening the second subassembly against the other side of said plate.
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Specification