LED lamp

• US 9,951,938 B2
• Filed: 10/24/2013
• Issued: 04/24/2018
• Est. Priority Date: 10/02/2009
• Status: Active Grant

• Current Assignee: Consumer Lighting, LLC (d/b/a GE Lighting) (Savant Systems, LLC)
• Original Assignee: GE Lighting Solutions LLC (Savant Systems, LLC)
• Inventors: Dudik, David C., Rintamaki, Joshua I., Allen, Gary R., Kuenzler, Glenn H.
• Primary Examiner(s): Hanley, Britt D
• Application Number:
  US14/062,317
• Publication Number:
  US 20140160763A1
• Time in Patent Office: 1,643 Days
• Field of Search: None
• CPC Class Codes: F21K 9/232 specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• CPC Class Codes: F21V 29/506 of globes, bowls or cover glasses
• CPC Class Codes: F21V 29/74 with fins or blades
• CPC Class Codes: F21V 29/75 with fins or blades having different shapes, thicknesses or spacing
• CPC Class Codes: F21V 29/76 with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
• CPC Class Codes: F21V 29/77 with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
• CPC Class Codes: F21V 29/80 with pins or wires
• CPC Class Codes: F21V 29/86 Ceramics or glass
• CPC Class Codes: F21V 29/87 Organic material, e.g. filled polymer composites; Thermo-conductive additives or coatings therefor
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A light emitting apparatus comprising an at least substantially omnidirectional light assembly including an LED-based light source within a light-transmissive envelope. Electronics configured to drive the LED-based light source, the electronics being disposed within a base having a blocking angle no larger than 45°. A plurality of heat dissipation elements (such as fins) in thermal communication with the base and extending adjacent the envelope.

Claims

1. A lamp comprising a light transmissive envelope;

a solid state light source illuminating the interior of the light transmissive envelope;

said light source in thermal communication with a base said base having a first end terminating adjacent a perimeter of said light transmissive envelope and receiving the solid state light source;

said apparatus having a longitudinal axis dissecting said envelope and base element and wherein said base has a light blocking angle of between 0° and

45°

as measured from said longitudinal axis at a point of exit from said light transmissive envelope.

2. The apparatus of claim 1 wherein said light blocking angle extends 360°

around a horizontal axis of said device.

3. The apparatus of claim 1 wherein said light blocking components include at least a heat sink, electronics, and an electrical connector.

4. A solid state lighting device comprising

a base end;

a light transmissive envelope;

at least one solid state emitter; and

a heatsink disposed between the base end and the at least one solid state emitter, and arranged to dissipate heat generated by the at least one solid state emitter;

wherein;

the heatsink has a first end external and adjacent to the envelope, having a first width at the first end;

the heatsink has a second end having a second width at the second end;

the second width being greater than the first width; and

at least a portion of the heatsink disposed between the first end and the second end has a third width that is greater than the first width and the second width.

5. The lighting device of claim 4 wherein said second end comprises an electrical connector.

6. A solid state lighting device comprising:

a base end;

at least one solid state emitter; and

a heatsink disposed between the base and the at least one solid state emitter, and arranged to dissipate heat generated by the at least one solid state emitter;

said heatsink including a plurality of fins overlying a light transmissive envelope and extending from a heatsink side of the envelope to a remote side of the envelope;

wherein the lighting device has a substantially central axis extending in a direction between the base end and an emitter mounting area in which the at least one solid state emitter is mounted;

wherein the heatsink is arranged to permit unobstructed emission of light generated by the at least one solid state emitter according to each latitude angle of greater than 135 degrees relative to the central axis around an entire lateral perimeter of the solid state lighting device.

7. The solid state lighting device of claim 6, wherein the at least one solid state emitter is disposed under or within a light transmissive envelope.

8. The solid state lighting device of claim 6, wherein the plurality of fins are in optical communication with light emitted by said at least one solid state emitter that exits the light transmissive envelope such that said light is at least substantially reflected by said fins.

9. The solid state lighting device of claim 6, wherein the heatsink is adapted to dissipate a thermal load generated by a 10 w LED lamp or greater in an ambient air environment of about 40°

C. while maintaining a junction temperature of the at least one solid state emitter at or below about 85°

C.

10. The solid state lighting device of claim 6, being sized and shaped in accordance with ANSI Standard C.78.20-2003.

11. A lamp or light fixture comprising the solid state lighting device of claim 6.