LED light bulbs for space lighting

• US 8,653,723 B2
• Filed: 02/17/2010
• Issued: 02/18/2014
• Est. Priority Date: 02/17/2009
• Status: Active Grant

• Current Assignee: Satco Products Incorporated
• Original Assignee: CAO Group, Inc.
• Inventors: Cao, Densen, Lin, Zhaohui
• Primary Examiner(s): Williams, Joseph L
• Application Number:
  US12/706,869
• Publication Number:
  US 20100207502A1
• Time in Patent Office: 1,462 Days
• Field of Search: 313/46, 313/45, 362/218, 362/294, 362/800, 362/311.02
• 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: F21V 29/51 using condensation or evaporation of a fluid, e.g. heat pipes
• CPC Class Codes: F21V 29/67 characterised by the arrangement of fans
• CPC Class Codes: F21V 29/677 the fans being used for discharging
• CPC Class Codes: F21V 29/773 the planes containing the fins or blades having the direction of the light emitting axis
• CPC Class Codes: F21V 3/00 Globes; Bowls; Cover glasses with refracting properties F21V5/00; with reflecting properties F21V7/00; characterised by cooling arrangements F21V29/506
• CPC Class Codes: F21Y 2103/33 annular
• CPC Class Codes: F21Y 2107/40 on the sides of polyhedrons, e.g. cubes or pyramids
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

The invention discloses a three dimensional LED arrangement and heat management method using a heat transfer or conduction pipe to enable rapid heat transfer from a three dimensional cluster of LEDs to a heatsink with or without active cooling, the light emitted from the three dimensional cluster not being obstructed by a heat sink arrangement such that the light beam profile generated by the light appears similar to that generated by traditional incandescent bulbs.

Claims

1. A lighting device, comprising:

a frame;

a face portion located on the frame, the face portion having a face area;

a panel coupled to the face portion, the panel having a panel area that is substantially equal to the face area;

a LED source of light mounted on said panel;

a heat sink spaced from said frame to position the plurality of LED sources of light at least one inch away from said heat sink;

a heat conducting pipe having a proximal end and a distal end, said proximal end connected to said frame and said distal end connected to said heat sink;

an electronic driver positioned proximate said heat sink and configured to connect to an external source of power; and

first and second electric conducting wires connecting said electronic driver to said plurality of LED light sources.

2. The lighting device of claim 1, further comprising a transparent housing.

3. The lighting device of claim 2, wherein said electrical connection to an external source of power comprises an Edison screw base.

4. The lighting device of claim 1, wherein the plurality of LED light sources comprises a plurality of surfaced mount LEDs.

5. The lighting device of claim 1, wherein the plurality of LED light sources comprises a plurality of LED chips.

6. The lighting device of claim 1, wherein the frame has six faces and a hexagonal cross section, and wherein an LED source of light is positioned on each face.

8. The lighting device of claim 1, wherein the heat conduction tube comprises an outer tube, a wicking material and a working fluid.

9. The lighting device of claim 1, wherein the heat conducting tube is constructed of a first material and includes an inner material having a melting temperature lower than the melting temperature of the first material.

10. The lighting device of claim 9, wherein the first material is copper and the inner material is gallium.

11. The lighting device of claim 1, wherein the heat sink includes a plurality of heat dissipating members and wherein the heat sink is constructed of aluminum.

12. The lighting device of claim 11, wherein the heat dissipating members are fins.

13. The lighting device of claim 11, wherein the heat dissipating members are rods.

14. The lighting device of claim 1, wherein the frame is constructed of a solid non-hollow piece of metal.

15. The lighting device of claim 1, wherein the frame is hollow and constructed of metal.

7. The lighting device of c1aim 1, wherein the frame is multifaceted in both a longitudinal and latitudinal direction, and wherein an LED source of light is positioned on each face of said multifaceted frame.

16. A lighting device, comprising:

a multifaceted heat conducting frame having a plurality of faces;

a plurality of face portions located on the frame, each face portion having a face area;

a plurality of panels coupled to, and corresponding to, the plurality of face portions, each of the plurality of panels having a panel area that is substantially equal to the face area of each corresponding face portion;

a plurality of LED sources of light mounted, an LED source of light being mounted on each of said plurality of panels;

a heat sink spaced from said frame to position the plurality of LED sources of light at least one inch away from said heat sink;

a heat conducting pipe having a proximal end and a distal end, said proximal end connected to said frame and said distal end connected to said heat sink;

an electronic driver positioned proximate said heat sink and configured to connect to an external source of power;

an electrical conductor connecting said electrical connection to said plurality of LED light sources and the electronic driver; and

a housing.

17. The lighting device of claim 16, wherein said electrical connection to an external source of power comprises an Edison screw base.

18. The lighting device of claim 16, wherein the plurality of LED light sources comprises a plurality of surfaced mount LEDs.

19. The lighting device of claim 16, wherein the plurality of LED light sources comprises a plurality of LED chips.

20. The lighting device of claim 16, wherein the heat sink includes a plurality of heat dissipating members and wherein the heat sink is constructed of aluminum.

21. A lighting device, comprising:

a multifaceted heat conducting frame having a plurality of faces;

a plurality of face portions located on the frame, each face portion having a face area;

a plurality of panels coupled to, and corresponding to, the plurality of face portions, each of the plurality of panels having a panel area that is substantially equal to the face area of each corresponding face portion;

a plurality of LED chip sources of light mounted, an LED chip source of light being mounted on each of said plurality of panels;

a heat sink spaced from said frame to position the plurality of LED sources of light at least one inch away from said heat sink, said heat sink including a plurality of heat dissipating members and constructed of aluminum;

a heat conducting pipe having a proximal end and a distal end, said proximal end connected to said frame and said distal end connected to said heat sink;

an electronic driver positioned within an Edison screw base that is positioned proximate said heat sink and configured to connect to an external source of power;

an electrical conductor connecting said electronic driver to said plurality of LED light sources; and

a housing.

22. A lighting device, comprising:

a frame;

a face portion located on the frame, the face portion having a face area;

a panel coupled to the face portion, the panel having a panel area that is substantially equal to the face area;

a LED source of light mounted on said panel, said LED sources operable to directly receive AC power input;

a heat sink spaced from said frame to position the plurality of LED sources of light at least one inch away from said heat sink;

a heat conducting pipe having a proximal end and a distal end, said proximal end connected to said frame and said distal end connected to said heat sink;

a connection base positioned proximate said heat sink and configured to connect to an external source of power; and

first and second electric conducting wires connecting said connection base to said plurality of LED light sources.