High power led power pack for spot module illumination

US 20020176250A1
Filed: 05/24/2002
Published: 11/28/2002
Est. Priority Date: 05/26/2001
Status: Active Grant

First Claim

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1. A light module, comprising:

a light emitting diode assembly defining a front side light emitting diode array and a rear side, the rear side in thermal communication with a thermally conductive spreader;

a thermally conductive core in thermal communication with the conductive spreader, the thermally conductive core providing means for an electrical conductor to be in operative communication with the front side light emitting diode array; and

a plurality of appendages disposed about the thermally conductive core, the plurality of appendages in thermal communication with the conductive spreader.

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Abstract

A light module includes a light emitting diode assembly defining a front side light emitting diode array and a rear side. The rear side is in thermal communication with a thermally conductive spreader, and a thermally conductive core is in thermal communication with the conductive spreader. The thermally conductive core includes an electrical conductor in operative communication with the front side light emitting diode array, and a plurality of appendages are disposed about the thermally conductive core such that they are in thermal communication with the conductive spreader.

130 Citations

24 Claims

1. A light module, comprising:
- a light emitting diode assembly defining a front side light emitting diode array and a rear side, the rear side in thermal communication with a thermally conductive spreader;
  
  a thermally conductive core in thermal communication with the conductive spreader, the thermally conductive core providing means for an electrical conductor to be in operative communication with the front side light emitting diode array; and
  
  a plurality of appendages disposed about the thermally conductive core, the plurality of appendages in thermal communication with the conductive spreader.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 19, 20)
- - 2. The light module as set forth in claim 1, further comprising:
    - a housing surrounding the front side light emitting diode array; and
      
      an optic removably affixed to the housing opposite the front side light emitting diode array.
  - 3. The light module as set forth in claim 2, wherein the optic comprises:
    - a plurality of lenslets corresponding to the light emitting diodes in the front side light emitting diode array.
  - 4. The light module as set forth in claim 2, wherein the housing provides a selectively variable spacing between the optic and the front side light emitting diode array.
  - 5. The light module as set forth in claim 1, where the plurality of appendages comprise fins surroundingly attached to the thermally conductive core.
  - 6. The light module as set forth in claim 1, where the plurality of appendages comprise rods extending away from the rear side of the light emitting diode assembly.
  - 7. The light module as set forth in claim 1, where the light emitting diode assembly comprises a number of light emitting diodes, each light emitting diode disposed in a shaped recess, the recess and light emitting diode covered with a lens.
  - 8. The light module as set forth in claim 1, where the light emitting diode assembly comprises individually packaged light emitting diode elements.
  - 9. The light module as set forth in claim 8, where the individually packaged light emitting diode elements are secured in thermal communication to the thermally conductive spreader.
  - 10. The light module as set forth in claim 1, where the light module has a thermal resistivity of less than 40 degrees Centigrade per watt.
  - 11. The light module as set forth in claim 1, where the thermally conductive core and the electrical conductor are adapted to be accommodated in a fixture selected from the set of MR-style fixtures and PAR-style fixtures.
  - 12. The light module as set forth in claim 1, where the front side light emitting diode array selectively produces saturated color light.
  - 13. The light module as set forth in claim 1, where the front side light emitting diode array selectively produces white light.
  - 14. The light module as set forth in claim 1, where the front side light emitting diode array selectively produces desaturated colors based on a mixture from a variety of saturated color LEDs.
  - 15. The light module as set forth in claim 1, where the front side light emitting diode array selectively produces at least 50 lumens of light.
  - 16. The light module as set forth in claim 1, further comprising individually powerable sets of diodes in the front side light emitting diode array.
  - 18. The light emitting diode assembly as set forth in claim 17, where the plurality of thermally conductive attachments comprise fins attached to the thermally conductive core.
  - 19. The light emitting diode assembly as set forth in claim 18, where the fins comprise an attachment edge attached to the thermally conductive core parallel to a central axis of the thermally conductive core.
  - 20. The light emitting diode assembly as set forth in claim 17, where the thermally conductive attachments comprise elongated pillars attached to a side opposite the light emitting face.

17. A light emitting diode assembly including a light emitting face supported by a body through which electrical connection elements pass, the body comprising:
- a thermally conductive core in thermal communication with the light emitting face, the thermally conductive core providing a path for the electrical connection elements to be in electrical communication with light emitting diodes in the light emitting face;
  
  a plurality of thermally conductive attachments surrounding the thermally conductive core, the plurality of attachments in thermal communication with the light emitting diode assembly.

21. A lamp for use in connection with spot module platforms, said lamp comprising:
- a plurality of LEDs arranged in an LED assembly having opposing forward and rearward facing sides, said forward facing side selectively providing illumination from the LEDs when power is supplied thereto;
  
  a heat sink in thermal communication with the rearward facing side of the LED assembly, said heat sinking arranged to draw heat from the LEDs; and
  
  , heat dissipating means in thermal communication with the heat sink, said heat dissipating means dissipating heat from the heat sink via convection.
- View Dependent Claims (22, 23, 24)
- - 22. The lamp according to claim 21, wherein the heat dissipating means includes a plurality of members having exposed surface areas, said members being in thermal communication with the heat sink.
  - 23. The lamp according to claim 22, wherein the heat sink includes:
    - a thermally conductive base in contact with the rearward facing side of the LED assembly; and
      
      , a thermally conductive core which extends from the base in a direction away from the LED assembly.
  - 24. The lamp according to claim 23, wherein the members of the heat dissipating means are in contact with and extend away from at least one of the base and the core of the heat sink.

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Current Assignee
Consumer Lighting, LLC (d/b/a GE Lighting) (Savant Systems, LLC)
Original Assignee
Gelcore (General Electric Company)
Inventors
Becker, Charles A., Karlicek, Robert F. Jr., Petroski, James T., Weaver, Stanton E. Jr., Bohler, Christopher L., Sommers, Mathew L., Burkholder, Greg E., Pollard, Anthony D.

Granted Patent

US 6,799,864 B2
Time in Patent Office

Days
Field of Search
US Class Current

362/236
CPC Class Codes

F21K 9/233   specially adapted for gener...

F21V 19/0005   of sources having contact p...

F21V 29/74   with fins or blades

F21V 29/767   the planes containing the f...

F21V 29/773   the planes containing the f...

F21V 29/81   with pins or wires having d...

F21V 7/0083   Array of reflectors for a c...

F21V 7/041   with conical or pyramidal s...

F21V 7/06   with parabolic curvature

F21Y 2113/13   comprising an assembly of p...

F21Y 2115/10   Light-emitting diodes [LED]

H01L 2224/48091   Arched

H01L 25/0753   the devices being arranged ...

H01L 2924/00014   the subject-matter covered ...

H01L 33/642   characterized by the shape

Y10S 362/80   Light emitting diode

High power led power pack for spot module illumination

First Claim

7 Assignments

0 Petitions

Accused Products

Abstract

130 Citations

24 Claims

Specification

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High power led power pack for spot module illumination

First Claim

7 Assignments

Subscription Required

Subscription Required

0 Petitions

Subscription Required

Accused Products

Subscription Required

Abstract

130 Citations

24 Claims

Specification

Subscription Required

Solutions

Use Cases

Quick Links