Flat LED lamp assembly

• US 8,845,132 B2
• Filed: 02/09/2012
• Issued: 09/30/2014
• Est. Priority Date: 02/09/2011
• Status: Expired due to Fees

• Current Assignee: Differential Energy Products, LLC
• Original Assignee: Differential Energy Products, LLC
• Inventors: Flaherty, Richard A., Burton, Christopher A., Ahrens, Phil
• Primary Examiner(s): Sawhney, Hargobind S
• Application Number:
  US13/370,277
• Publication Number:
  US 20120236602A1
• Time in Patent Office: 964 Days
• Field of Search: 362/184, 362/196, 362/197, 362/200, 362/202, 362/208, 362/219.17, 362/230, 362/231, 362/234, 362/249.01, 362/249.02, 362/249.03, 362/249.11, 362/282, 362/287, 362/294, 362/372, 362/545, 362/429, 362/548, 362/549, 362/612, 362/646, 362/647, 362/649, 362/650, 362/652, 362/800, 362/802, 439/10, 439/11, 439135-139, 439/220, 439/232, 439/237, 439240-244, 439253-257, 439/320, 439/339, 439/370, 439/447, 439/620.02, 439/620.22, 439/620.25, 439/699.2, 439/700, 439/786, 439815-817, 439/824, 439/859, 313/45, 313/46, 313/499, 313/500
• US Class Current: 362/249.03
• CPC Class Codes: F21K 9/23 Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
• CPC Class Codes: F21K 9/65 specially adapted for changing the characteristics or the distribution of the light, e.g. by adjustment of parts
• CPC Class Codes: F21V 29/763 the planes containing the fins or blades having the direction of the light emitting axis
• CPC Class Codes: F21V 29/773 the planes containing the fins or blades having the direction of the light emitting axis
• CPC Class Codes: F21V 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H05B 45/357 specially adapted for retrofit LED light sources
• CPC Class Codes: H05B 45/395 Linear regulators
• CPC Class Codes: Y02B 20/30 Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

An LED-based lamp assembly with a driver assembly having a base portion rotateably engageable with the socket of a light fixture to make a first electrical contact with the light fixture. The driver assembly has an electrically conductive, retractable tip portion coupled to the base portion and that makes a second electrical contact with the light fixture. The tip portion retracts relative to the base when in electrical contact with the light fixture'"'"'s socket portion. A lamp housing assembly operably connected to the driver assembly has a lamp housing connected to the driver assembly. The lamp housing is coupled to at least one substrate having at least one LED light thereon. The substrate is connected to, or is an integral part of, a heat sink that carries heat away from the substrate and/or LED light. The lamp housing assembly is rotatable relative to the light fixture to adjust the angular position of the light source.

Claims

1. An LED-based lamp assembly for use with a light fixture having a socket portion, the lamp assembly comprising:

a driver assembly having a base portion rotatably engageable with the socket portion to make a first electrical contact with the light fixture, the driver assembly having an electrically conductive tip portion coupled to the base portion, the tip portion being engageable with the socket portion to make a second electrical contact with the light fixture, the tip portion being retractable relative to the base portion when in the second electrical contact, the driver assembly having first electrical contacts; and

a lamp housing assembly operably connected to the driver assembly, the LED lamp assembly having a lamp housing connected to the driver assembly, the lamp housing having second electrical contacts operatively connected to the first electrical contacts, the lamp housing being coupled to at least one LED substrate having at least one LED light thereon, the LED substrate being connected to a heat sink configured to carry heat away from the LED substrate, the lamp housing assembly being rotatable relative to the light fixture to adjust the angular position of the LED substrate while maintaining the first and second electrical contacts between the driver assembly and the socket portion.

2. The assembly of claim 1 wherein lamp housing assembly is removeably connected to the driver housing assembly, the lamp housing assembly being removable from the driver housing assembly while the driver housing assembly is connected to the light fixture.

3. The assembly of claim 1 wherein the driver assembly has a first connection member with the first electrical contacts thereon, and the lamp housing has a second connection member that releasably mates with the first connection member, the second connection member having the second electrical contacts that engage the first electrical contacts when the first and second connection members are in mating engagement.

4. The assembly of claim 1 wherein the driver assembly is removeably connected to the lamp housing assembly, the driver assembly having a first quick connect portion, and the lamp housing having a second quick connect portion that releasably mates with the first quick connect portion.

5. The assembly of claim 1 wherein the heat sink has a plurality of fins spaced apart from each other, the LED light being positioned on the LED chip board in alignment with one or more heat sink fins.

6. The assembly of claim 1 wherein the lamp housing assembly is rotatable relative to the driver assembly.

7. The assembly of claim 1 wherein the lamp housing is rotatable relative to the driver assembly through a rotational range of approximately 90 degrees while maintaining electrical contact therebetween.

8. The assembly of claim 1 wherein the lamp housing assembly has an electrical interface board intermediate and electrically interfacing with the LED substrate and the driver assembly.

9. The assembly of claim 1 wherein the LED substrate is an integral portion of the heat sink.

10. The assembly of claim 1 wherein the lamp housing assembly has at least one fan electrically connected to the driver housing and positions adjacent to the heat sink and oriented to move air across the heat sink when activated.

11. An LED-based light fixture assembly, comprising:

a light fixture coupleable to a power source and having a threaded socket portion;

a driver assembly having a threaded base portion that screws into the threaded socket portion, the driver assembly having an electrically conductive, retractable tip portion coupled to the base portion and positioned to electrically engage the socket portion when the base portion is being screwed into the socket portion, the tip portion being retractable relative to the base portion after the tip portion electrically engages the socket portion and before the base portion is fully screwed into the socket portion; and

a lamp housing assembly electrically connected to the driver assembly, the lamp housing assembly having a heat sink with a plurality of fins, at least one LED chip board mounted to the heat sink, wherein the LED chip board having at least one LED light thereon, and an air flow device adjacent to the heat sink and operable to move air over the heat sink, wherein the heat sink configured to carry heat away from the LED chip board, the LED chip board and heat sink being rotatable as a unit relative to the light fixture to adjust the angular position of the LED chip board while maintaining electrical engagement between the tip portion and the socket portion.

12. The assembly of claim 11 wherein lamp housing assembly is removeably connected to the driver housing assembly, the lamp housing assembly being removable from the driver housing assembly while the driver housing assembly is connected to the light fixture.

13. The assembly of claim 11 wherein the driver assembly has a first connection member, and the lamp housing assembly having a second connection member that releasably mates with the first connection member.

14. The assembly of claim 11 wherein the heat sink has a plurality of fins spaced apart from each other, the LED light being positioned on the LED chip board in alignment with at least one of the heat sink'"'"'s fins.

15. The assembly of claim 11 wherein the lamp housing assembly has at least one fan electrically connected to the driver housing and positioned adjacent to the heat sink, the fan being oriented to move air across the heat sink when the fan is activated.

16. A mogul base lamp assembly for use with a light fixture having a mogul socket, the lamp assembly comprising:

A driver assembly having a threaded base portion that screws into the mogul socket, the driver assembly having an electrically conductive, retractable tip portion coupled to the base portion and positioned to electrically engage the mogul socket when the base portion is being screwed into the socket portion, the tip portion being retractable relative to the base portion after the tip portion electrically engages the socket portion and before the base portion is fully screwed into the mogul socket, the driver assembly having driver housing with a first connection member spaced apart from the threaded base portion; and

A lamp housing assembly removeably and electrically connected to the driver assembly, the lamp housing assembly having a lamp housing with a second connection member that releasably mates with the first connection member, the lamp housing connected to a heat sink and an LED chip board mounted to the heat sink, wherein the LED chip board has a plurality of LED lights thereon, wherein the heat sink carries heat away from the LED chip board during operation of the lamp assembly, the LED chip board and heat sink being rotatable as a unit relative to the light fixture to adjust the angular position of the LED chip board while maintaining electrical engagement between the tip portion and the mogul socket.

17. The assembly of claim 16, wherein the lamp housing assembly has a fan positioned adjacent to the heat sink, the fan being electrically coupled to the driver assembly and operable to move air over the heat sink.

18. The assembly of claim 17 wherein the lamp housing assembly has an electrical interface board electrically interconnecting the driver assembly with the LED chip board, the LED lights, and the fan.

19. The assembly of claim 18 wherein the first connection member has first electrical contacts, and the second connection member has second electrical contacts that engage the first electrical contacts when the first and second connection members are in mating engagement.

20. The assembly of claim 18 wherein the heat sink has a plurality of contoured fins spaced apart from each other, the LED lights each being positioned on the LED chip board in alignment with at least one of the contoured fins.