Lighting apparatus including flexible power supply

• US 7,708,452 B2
• Filed: 06/08/2006
• Issued: 05/04/2010
• Est. Priority Date: 06/08/2006
• Status: Active Grant

• Current Assignee: Lighting Science Group Corporation (Pegasus Capital Advisors, L.P.)
• Original Assignee: Lighting Science Group Corporation (Pegasus Capital Advisors, L.P.)
• Inventors: Maxik, Fredric S., Garrity, Paul James
• Primary Examiner(s): Negron, Ismael
• Application Number:
  US11/449,138
• Publication Number:
  US 20070296350A1
• Time in Patent Office: 1,426 Days
• Field of Search: 362/650, 362/249, 362/249.02, 362/249.05, 362/249.12, 174/254
• US Class Current: 362/650
• 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: F21V 23/002 Arrangements of cables or conductors inside a lighting device, e.g. means for guiding along parts of the housing or in a pivoting arm
• CPC Class Codes: F21V 29/51 using condensation or evaporation of a fluid, e.g. heat pipes
• CPC Class Codes: F21V 29/773 the planes containing the fins or blades having the direction of the light emitting axis
• CPC Class Codes: F21Y 2105/10 comprising a two-dimensional array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H05K 1/189 characterised by the use of a flexible or folded printed circuit H05K3/326 takes precedence

Abstract

A device has an electrical connector, a radiation generator, and a flexible carrier with circuitry that is operatively coupled between the connector and the radiation generator. In response to electrical power received through the connector, the circuitry energizes the radiation generator, and the radiation generator emits radiation. In a different embodiment, a device has an electrical connector, a radiation generator, and a member with circuitry embedded therein. The circuitry is operatively coupled between the connector and the radiation generator. In response to electrical power received through the connector, the circuitry energizes the radiation generator, and the radiation generator emits radiation.

Claims

1. An apparatus comprising a device that includes:

an electrical connector through which said device can receive electrical power from externally thereof, said electrical connector comprising an Edison-type base having a cylindrical recess therein;

a radiation generator that, when energized, emits electromagnetic radiation, said radiation generator comprising at least one light emitting diode (LED);

a power supply including a flexible carrier having circuitry that includes interconnected electrical circuit components on both sides thereof, said circuitry being operatively coupled between said connector and said radiation generator to convert household electrical power to an output signal suitable to drive the at least one LED, said flexible carrier circuitry being responsive to adapting electrical power received through said connector for energizing said radiation generator in a manner causing said at least one LED to produce radiation that is emitted from said device;

wherein said flexible carrier is bent to form a ring-like cylindrical shape disposed in matching relationship within the cylindrical recess of the Edison-type base, and has opposite edge portions that are adjacent and coupled, wherein said flexible carrier electrically isolates said circuitry from said electrical connector.

2. An apparatus according to claim 1, wherein a piece of double-sided tape is disposed between said edge portions.

3. An apparatus according to claim 1, wherein said flexible carrier is a flexible circuit board.

4. An apparatus according to claim 1, wherein said device is a lightbulb.

5. An apparatus according to claim 1, wherein said electromagnetic radiation includes at least one of infrared radiation, ultraviolet radiation and visible radiation.

6. An apparatus according to claim 1, further comprising

a potting material that has said carrier embedded therein and that is at least partly disposed within said recess, said potting material being thermally conductive to transfer heat from said carrier to said electrical connector.

7. An apparatus according to claim 6, wherein said electrical connector has first and second electrical contacts;

and

including first and second electrical conductors that are disposed within said potting material and that each have one end electrically coupled to said circuitry and another end electrically coupled to a respective one of said contacts.

8. An apparatus according to claim 7, wherein said potting material is electrically non-conductive.

9. An apparatus according to claim 1, including a member having said carrier embedded therein.

10. An apparatus according to claim 9, wherein said member is disposed at least partly within said recess.

11. An apparatus according to claim 10, wherein said recess has an internal thread;

and wherein said member has an external thread that engages said internal thread in said recess.

12. An apparatus according to claim 11, wherein said member is made of an electrically non-conductive and a thermally conductive material;

wherein said base has two electrically conductive parts within said recess, one of said parts having said internal thread thereon;

wherein said circuitry includes a microprocessor for producing said output signal to drive said LED; and

including two electrical conductors in said member that each have a first end electrically coupled to said circuitry on said carrier, and that each have a second end protruding from said member and engaging a respective one of said electrically conductive parts of said base.

13. An apparatus according to claim 11, wherein said device includes a part having a further recess with an internal thread;

and

wherein said member has a further external thread thereon that engages said internal thread in said further recess.