LED lamp

• US 10,400,959 B2
• Filed: 11/09/2010
• Issued: 09/03/2019
• 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
• Primary Examiner(s): Mai, Anh T
• Assistant Examiner(s): Farokhrooz, Fatima N
• Application Number:
  US12/942,053
• Publication Number:
  US 20120112615A1
• Time in Patent Office: 3,220 Days
• Field of Search: 362480, 362546, 362547, 362218, 362294, 362373, 362555, 362235, 36224901, 36224902, 313 17, 313 20, 313 33, 313 46, 313 45, 439487, 257 81
• 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 having a longitudinal axis, a plurality of light emitting diodes disposed on said columnar body, a plurality of fins including a first edge disposed on said columnar body and a second edge remote from the columnar body, said first edge oriented at least generally parallel to the longitudinal axis of the columnar body, opposed first end second side walls extending between the first edge and the second edge, said first and second side walls being disposed in at least substantially parallel planes, a light dispersing optic element overlapping and spaced from said diodes, said optic element including at least one of a phosphor and light scattering material, said optic element comprising a plurality of wedge-shaped optic elements, each element being disposed between a pair of adjacent fins and configured such that the exterior surfaces of the optic elements in combination form an at least substantially spherical 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 wherein said diodes are substantially evenly spaced radially around the columnar body.

4. 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.

5. 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.

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

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

8. The lamp of claim 1 wherein said optic element preferentially directs light substantially perpendicular to an elongated axis of the columnar body.

9. The lamp of claim 1 wherein said second edge of said fins is free.

10. The lamp of claim 3 wherein said fins are substantially equally disposed between said diodes.

11. The lamp of claim 4 wherein at least one diode resides on each face of said columnar body.

12. The lamp of claim 11 wherein one fin resides on each corner of said columnar body.

13. The lamp of claim 12 wherein a single diode resides on each face and the number of diodes and fins is substantially equivalent.

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

15. A lamp comprised of an at least substantially hollow columnar body having a longitudinal axis, a plurality of light emitting diodes disposed on said columnar body, a plurality of fins including a first edge disposed on said columnar body and a second edge remote from the columnar body, said first edge oriented at least generally parallel to the longitudinal axis of the columnar body, opposed first end second side walls extending between the first edge and the second edge, said first and second side walls being disposed in at least substantially parallel planes, a light dispersing optic element overlapping and spaced from said diodes, said optic element including at least one of a phosphor and light scattering material, 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, wherein the second edges of said fins in combination form an exterior portion of said lamp and provide a general A19 outline.

16. The lamp of claim 15 wherein said light dispersing optic element mates with each fin intermediate the first edge and the second edge.