Lighting assembly and light module for same

• US 7,985,005 B2
• Filed: 03/06/2007
• Issued: 07/26/2011
• Est. Priority Date: 05/30/2006
• Status: Expired due to Fees

• Current Assignee: Korrus Incorporated (MKD Electric, Inc.)
• Original Assignee: Journee Lighting, Inc. (EcoSense Lighting Inc.)
• Inventors: Alexander, Clayton, Botos, Doug, Walker, Kevin, Melrose, Jesse, Metlen, Todd
• Primary Examiner(s): TON, ANABEL
• Application Number:
  US11/715,071
• Publication Number:
  US 20070279921A1
• Time in Patent Office: 1,603 Days
• Field of Search: 362/294, 362/373, 112/94, 113/73
• US Class Current: 362/294
• CPC Class Codes: F21S 8/038 intended to be mounted on a light track suspended from a light track F21S8/066; details of supporting elements displaceable along a guiding element F21V21/34
• CPC Class Codes: F21S 8/043 mounted by means of a rigid support, e.g. bracket or arm
• 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 15/013 the housing being an extrusion
• CPC Class Codes: F21V 15/04 Resilient mountings, e.g. shock absorbers shock absorbing devices of vehicle headlamp housings B60Q1/0491; in general F16F15/04
• CPC Class Codes: F21V 19/0055 by screwing
• CPC Class Codes: F21V 19/04 with provision for changing light source, e.g. turret auxiliary devices for cleaning, placing, or removing incandescent lamps H01K3/32, fluorescent lamps H01J9/006
• CPC Class Codes: F21V 21/30 Pivoted housings or frames
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21V 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• CPC Class Codes: F21V 29/85 characterised by the material liquid coolants F21V29/56
• CPC Class Codes: F21W 2121/00 Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00
• CPC Class Codes: F21W 2131/30 Lighting for domestic or personal use
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: Y10T 29/5313 Means to assemble electrical device

Abstract

A light module is removably coupleable to a light fixture and includes an LED lighting element mounted on a mounting base that is operatively coupled to a housing. The light module also includes one or more resilient members that operatively couple the mounting base to the housing and allow the mounting base and housing to resiliently move relative to each other. The resilient members compress when the light module is removably coupled to the light fixture to exert a generally axial force on the mounting base to drive the mounting base into resilient contact with a surface of the light fixture to provide a thermal coupling between the light module and the light fixture.

Claims

1. A lighting assembly comprising:

a light module including a lighting element;

an enclosure having a recess for removably receiving and housing at least a portion of the light module;

a thermally conductive core removably coupleable to the light module through the enclosure, the thermally conductive core having an elongate shape; and

a housing mounted in thermal contact with the core and the enclosure, the housing disposed circumferentially about the elongate thermally conductive core and extending co-axially therewith along a length of the thermally conductive core, one or both of the core and housing configured to dissipate heat from the lighting element to an ambient atmosphere.

2. The lighting assembly according to claim 1, further comprising:

a protective cover attached to the enclosure, the cover having a transparent cover formed therein for allowing light emitted from the lighting element to pass therethrough, and at least one hole formed on a periphery of the protective cover to permit air flow through the cover.

3. The lighting assembly according to claim 1, wherein the lighting element comprises a light emitting diode (LED) device.

4. The lighting assembly according to claim 3, wherein the LED device comprises an LED chip having at least one LED mounted thereon.

5. The lighting assembly according to claim 1, wherein the light module further comprises:

a mounting base having a top base portion and a bottom base portion, the bottom base portion being wider than the top base portion, the top base portion extending through the second hole; and

a tapered optical element for directing light emitted from the lighting element, the tapered optical element having an upper element portion and a lower element portion, the lower element portion being narrower than the upper element portion.

6. The lighting assembly according to claim 5, wherein

the top base portion has a top mounting base surface, and the bottom base portion has a bottom mounting base surface;

the lighting element is mounted on the top mounting base surface with a first thermally conductive material positioned therebetween; and

the bottom mounting base surface is thermally coupleable with the core through the enclosure, with a second thermally conductive material positioned between the bottom mounting base surface and the enclosure.

7. The lighting assembly according to claim 1, further comprising one or more resilient mounting components in the light module that compress when the light module is coupled to the enclosure and that provides a substantially even force against the mounting base, thereby driving the mounting base of the light module into resilient contact with a surface of the enclosure.

8. The lighting assembly according to claim 7, wherein the resilient mounting component comprises one of a spring compression assembly or a resilient rubber tubing assembly.

9. The lighting assembly according to claim 1, wherein the enclosure includes electrical contacts connectable to an external power source for establishing a detachable electrical connection with the light module.

10. The lighting assembly according to claim 9, wherein the enclosure includes a power source opening for receiving a connector to the external power source.

11. The lighting assembly according to claim 1, wherein the enclosure comprises a plurality of holes formed in a bottom surface of the enclosure.

12. The lighting assembly according to claim 1, comprising a thermally-conductive adhesive affixing the core to the enclosure and the housing.

13. The lighting assembly according to claim 1, wherein the core is mechanically coupled to the light module, the enclosure, and the housing so as to transfer heat from the light module to the enclosure and into the housing.

14. The lighting assembly according to claim 1, wherein the housing comprises a plurality of surface area-increasing structures having heat dissipating surfaces.

15. The lighting assembly according to claim 14, wherein the surface-increasing structures comprise flutes.

16. The lighting assembly according to claim 14, wherein the housing has a floral shape.

17. The lighting assembly according to claim 1, wherein the housing comprises a plurality of holes formed therethrough.

18. The lighting assembly according to claim 1, wherein the housing comprises an extruded housing.

19. The lighting assembly according to claim 1, wherein the enclosure, the thermally conductive core, and the housing are formed from a material having a thermal conductivity greater than 80 W/mK.

20. The lighting assembly according to claim 19, wherein the material comprises aluminum.

21. The lighting assembly according to claim 20, wherein the material comprises anodized aluminum.

22. A light module removably coupleable to a light fixture, the light module comprising:

an LED lighting element;

a mounting base, the LED lighting element mounted on the mounting base;

a housing operatively coupled to the mounting base; and

one or more resilient members that operatively couple the mounting base to the housing and allow the mounting base and housing to resiliently move relative to each other,

wherein the resilient members compress when the light module is removably coupled to the light fixture to exert a generally axial force on the mounting base to drive the mounting base into resilient contact with a surface of the light fixture to provide a thermal coupling between the light module and the light fixture.

23. The light module according to claim 22, wherein the LED lighting element comprises an LED chip having at least one LED mounted thereon.

24. The light module according to claim 22, wherein the one or more resilient members resiliently couple the light module to the light fixture by biasing the light module against the light fixture with a force exerted substantially evenly across the mounting base of the light module.

25. The light module according to claim 24, wherein the one or more resilient members comprise one or more compression springs.

26. The light module according to claim 22, wherein the mounting base is formed of a thermally conductive material so as to thermally conduct heat from the lighting element to the light fixture.

27. The light module according to claim 22, further comprising at least one electrical contact that contacts an electrical contact on the light fixture upon coupling of the light module to the light fixture.

30. The light module of claim 22, wherein the one or more resilient members comprise springs attached to the housing.

31. The light module of claim 22, wherein the LED lighting element is generally centrally located along a longitudinal axis of the light module.

32. The light module of claim 22, wherein a bottom surface of the mounting base is disposed below the housing.

33. The light module of claim 22, wherein the light module is generally symmetrical about a central axis of the light module.

28. A lighting assembly comprising:

a light fixture comprising thermally conductive housing defining a mounting interface surface; and

a light module removably mountable to the light fixture, the light module comprising;

an LED lighting element mounted on a mounting base;

a light module housing operatively coupled to the mounting base; and

one or more resilient members operatively coupled to the light module housing that resiliently couple the light module housing to the light fixture when the light module is coupled to the light fixture,

wherein the resilient members compress when the light module is removably coupled to the light fixture to exert a force on the mounting base that drives the mounting base into thermal communication with the mounting interface surface of the light fixture to provide a thermal connection therebetween to dissipate heat from the LED lighting element through the mounting base and thermally conductive housing.

29. The system of claim 28, wherein the light fixture further comprises an electrical contact releasably coupleable to an electrical contact on the light module to define an electrical connection when the light module is mounted to the light fixture.

34. The lighting assembly of claim 28, wherein the one or more resilient members comprise springs attached to the light module housing.

35. The lighting assembly of claim 28, wherein the LED lighting element is generally centrally located along a longitudinal axis of the light module.

36. The lighting assembly of claim 28, wherein a bottom surface of the mounting base is disposed below the light module housing.

37. The lighting assembly of claim 28, wherein the light module is generally symmetrical about a central axis of the light module.

38. A lighting assembly, comprising:

a light module comprising an LED lighting element;

a light fixture comprising a generally cylindrical recess that removably receives at least a portion of the light module when coupling the light module to the light fixture, wherein at least a portion of the light module is axially introduced into the cylindrical recess; and

one or more resilient members configured to compress when the light module is removably coupled to the light fixture to exert a generally axial force on at least a portion of the light module to resiliently drive at least a portion of the light module into resilient contact with a surface of the light fixture to thereby thermally couple at least a portion of the light module to the light fixture.

39. The lighting assembly of claim 38, wherein the one or more resilient members are disposed in the light module.

40. The lighting assembly of claim 39, wherein the one or more resilient members are disposed between a distal thermally conductive surface of a mounting base of the light module and a front end of the light module.