Methods and apparatus for an LED light

• US 6,982,518 B2
• Filed: 09/16/2004
• Issued: 01/03/2006
• Est. Priority Date: 10/01/2003
• Status: Active Grant

• Current Assignee: Enertron, Inc.
• Original Assignee: Enertron, Inc.
• Inventors: Chou, Der Jeou, Nelson, Daniel, Kulaga, Thomas
• Primary Examiner(s): Guharay, Karabi
• Application Number:
  US10/943,061
• Publication Number:
  US 20050073244A1
• Time in Patent Office: 474 Days
• Field of Search: 313/498, 313/502, 313/512, 313/46, 313/36, 313/40, 313/113, 362/800, 362/373, 315/169.3
• US Class Current: 313/46
• CPC Class Codes: F21K 9/233 specially adapted for generating a spot light distribution, e.g. for substitution of reflector lamps
• 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: Y10S 362/80 Light emitting diode

Abstract

An LED lighting device for use in place of a commercial-standard light bulb. For example, a commercial-standard light bulb typically has an outer surface profile, generally defining its shape and the LED lighting device has its own surface profile which substantially mimics the surface profile of the commercial-standard light bulb. Additionally, LED lighting device may further comprise a heat sink for dissipating energy generated by the LED lighting device. In accordance with various embodiments, the heat sink creates the LED lighting device'"'"'s outer surface profile and is configured to substantially mimic the outer surface profile of the commercial-standard light bulb.

Claims

1. An LED lighting device for use in place of a commercial-standard light bulb, the commercial-standard light bulb having a first outer surface profile, the LED lighting device comprising:

an LED light engine and a self-contained power converter; and

a heat sink in communication with said LED light engine and a socket connector for dissipating energy generated by the LED light engine, said heat sink including a plurality of fins situated radially with respect to the major axis of said heat sink and having a second outer surface profile configured to substantially mimic said first outer surface profile, wherein said self-contained power converter is contained within said socket connector and said light engine is embedded in a recessed cavity formed in a first end of said heat sink, wherein said recessed cavity includes a surface comprising a reflecting surface, and said socket connector is configured to electrically and mechanically connect to a commercial lamp fixture.

2. An LED lighting device according to claim 1, wherein said reflecting surface is substantially smooth.

3. An LED lighting device according to claim 1, wherein said reflecting surface further comprises facets.

4. An LED lighting device according to claim 3, wherein said facets are configured randomly on said reflecting surface.

5. An LED lighting device according to claim 3, wherein said facets are configured uniformly on said reflecting surface.

6. An LED lighting device according to claim 3, wherein the LED light engine comprises more than one LED chip and wherein said faceted reflector improves mixing of light generated by each of said LED chips.

7. An LED lighting device according to claim 1, further comprising a lens.