LED LAMP

• US 20120112615A1
• Filed: 11/09/2010
• Published: 05/10/2012
• Est. Priority Date: 11/09/2010
• Status: Active Grant

• Current Assignee: Savant Technologies, LLC (Savant Systems, LLC)
• Original Assignee: Lumination LLC
• Inventors: Kuenzler, Glenn Howard
• Granted Patent: US 10,400,959 B2
• Time in Patent Office: Days
• US Class Current: 313/46
• CPC Class Codes: F21K 9/232 specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• CPC Class Codes: F21K 9/238 Arrangement or mounting of circuit elements integrated in the light source
• CPC Class Codes: F21V 23/006 the substrate being distinct from the light source holder
• CPC Class Codes: F21V 29/777 the planes containing the fins or blades having directions perpendicular to 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]

Abstract

A lamp having a substantially hollow columnar body. A plurality of light emitting diodes are disposed on the columnar body. A plurality of fins are also disposed on the columnar body. A base member is included at a first end of the columnar body and provides a means for electrical connection. An electronics module is included within the columnar body communication with the base member for converting AC current to DC current.

Claims

1. A lamp comprised of an at least substantially hollow columnar body, a plurality of light emitting diodes disposed on said columnar body, a plurality of fins disposed on said columnar body, a base member disposed at a first end of the columnar body and providing a means for electrical connection, and an electronics module disposed within the columnar body and in electrical communication with the base member.

2. The lamp of claim 1 wherein a second end of said columnar body is open.

3. The lamp of claim 1 further including a light dispersing optic element overlapping said diodes.

5. The lamp of claim 1 wherein said diodes are substantially evenly spaced radially around the columnar body.

6. The lamp of claim 5 wherein said fins are substantially equally disposed between said diodes.

7. The lamp of claim 1 wherein said columnar body comprises one of a tetragon, pentagon, hexagon, heptagon, octagon, nonagon, decagon, hendecagon, or dodecagon in cross-section.

8. The lamp of claim 7 wherein at least one diode resides on each face of said columnar body.

9. The lamp of claim 8 wherein one fin resides on each corner of said columnar body.

10. The lamp of claim 9 wherein a single diode resides on each face.

11. The lamp of claim 1 wherein said columnar body and said fins are comprised of a material having a thermal conductivity greater than 100 W/mK.

12. The lamp of claim 9 including a single optic element is disposed between each adjacent fin over-lapping said diode.

13. The lamp of claim 1 wherein said base member comprises an Edison screw base or a wedge base.

14. The lamp of claim 1 wherein said electronics module comprises a printed circuit board including circuitry for converting AC to DC current.

15. The lamp of claim 3 wherein said optic element preferentially directs light substantially perpendicular to an elongated axis of the columnar body.

4. The lamp of claim 4 wherein said optic element includes a phosphor material.

16. A lamp comprising an elongated hollow polygonal body comprised of a material having a thermal conductivity greater than 100 W/mK, a fin extending radially from each corner of said body, a light emitting diode mounted to each side of said body, a screw or wedge base connector closing a first end of said body, a second end of said body being open, an electronics module disposed within said body in electrical communication with said connector and said light emitting diodes, said lamp having a general A19 outline.

17. A method of manufacturing a lamp comprising extruding an elongated hollow body, said body comprised of a material having a thermal conductivity greater than 100 W/mK, cutting said body to a predetermined length, attaching at least one light emitting diode to said body and providing electrical circuitry suitable for powering said light emitting diode.

18. The method of claim 17 wherein said material has a thermal conductivity greater than about 150 W/mK.

19. The method of claim 17 wherein said body includes a plurality of integral radially extending fins.

20. The method of claim 20 wherein said body has substantially straight side walls.