LED lighting assembly

• US 7,201,492 B2
• Filed: 03/17/2005
• Issued: 04/10/2007
• Est. Priority Date: 12/10/2001
• Status: Expired due to Term

• Current Assignee: Emissive Energy Corporation
• Original Assignee: Dr Robert Galli
• Inventors: Galli, Robert
• Primary Examiner(s): LOUIE, WAI SING
• Application Number:
  US11/082,278
• Publication Number:
  US 20050161684A1
• Time in Patent Office: 754 Days
• Field of Search: None
• US Class Current: 362/208
• CPC Class Codes: F21L 4/027 the light sources being a LED
• CPC Class Codes: F21S 45/47 Passive cooling, e.g. using fins, thermal conductive elements or openings
• CPC Class Codes: F21V 15/01 Housings, e.g. material or assembling of housing parts F21V15/02 takes precedence housings forming signs or letters G09F13/04
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21V 29/89 Metals
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

The present invention provides a lighting head assembly that incorporates a high intensity LED package into an integral housing for further incorporation into other useful lighting devices. The present invention primarily includes two housing components, namely an inner mounting die and an outer enclosure. The inner and outer components cooperate to retain the LED package, provide electrical and control connections, provide integral heat sink capacity and includes an integrated reflector cup. In this manner, high intensity LED packages can be incorporated into lighting assemblies through the use of the present invention by simply installing the present invention into a housing and providing power connections thereto.

Claims

1. A lighting assembly comprising:

a reflector cup having a rear surface, a front surface and an aperture extending through said reflector cup between said front surface and said rear surface, said reflector cup being thermally conductive;

a circuit board having electrical contact pads disposed on a first surface thereof and a thermally conductive spreader plate affixed adjacent said first surface, wherein said circuit board is adjacent said rear surface of said reflector cup, said spreader plate being in thermal communication with said rear surface of said reflector cup; and

a light emitting diode package having a front luminescent portion and a mounting base, said mounting base having a heat transfer plate on a rear surface thereof and first and second contact leads extending from the sides thereof, said light emitting diode mounted on said first surface of said circuit board, wherein said luminescent portion of said light emitting diode extends into said aperture, said first and second contact leads in electrical communication with said contact pads and said heat transfer plate being in thermal communication with said spreader plate, wherein said spreader plate conducts heat from said light emitting diode to said rear surface of said reflector cup.

2. The lighting assembly of claim 1, wherein said spreader plate is electrically isolated from said contact pads and said leads of said light emitting diode package.

3. The lighting assembly of claim 1, wherein said spreader plate is formed on said first surface of said circuit board.

4. The lighting assembly of claim 3, wherein said spreader plate and said circuit board are formed as a single assembly.

5. The lighting assembly of claim 3, wherein said spreader plate is electrically isolated from said contact pads and said leads of said light emitting diode package.

6. The lighting assembly of claim 1, further comprising:

means for fastening said circuit board to said reflector cup.

7. The lighting assembly of claim 6, wherein said means for fastening is screws.

8. The lighting assembly of claim 6, wherein said means for fastening is a thermally conductive adhesive.

9. The lighting assembly of claim 1, further comprising:

an exterior enclosure having an interior compartment therein, said lighting assembly being received in a first end of said interior compartment;

at least one battery having a first and second electrical contact, said battery positioned in a second end of said interior compartment; and

means for selectively energizing said light emitting diode disposed between and in electrical communication with said first and second contacts of said battery and said first and second contacts on said light emitting diode.

10. The lighting assembly of claim 9, wherein said assembly is a flashlight.