Outdoor high power light-emitting diode illuminating equipment

• US 20080116475A1
• Filed: 11/21/2007
• Published: 05/22/2008
• Est. Priority Date: 11/22/2006
• Status: Active Grant

• Current Assignee: NeoBulb Technologies Inc
• Original Assignee: NeoBulb Technologies Inc
• Inventors: Chen, Jen-Shyan
• Granted Patent: US 7,736,032 B2
• Time in Patent Office: Days
• US Class Current: 257/99
• CPC Class Codes: F21V 17/12 by screwing
• CPC Class Codes: F21V 29/51 using condensation or evaporation of a fluid, e.g. heat pipes
• 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 29/767 the planes containing the fins or blades having directions perpendicular to the light emitting axis
• 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 31/005 Sealing arrangements therefor
• CPC Class Codes: F21W 2131/10 Outdoor lighting
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

The invention provides a light-emitting diode illuminating equipment. The light-emitting diode illuminating equipment of the invention includes a heat-dissipating plate device, a plurality of heat-dissipating fins, a diode light-emitting apparatus, a plurality of heat-conducting devices, and a shield device. The heat-dissipating fins extend from a surface of the heat-dissipating plate device. By tightly mounting the heat-conducting devices on the surface of the heat-dissipating plate device and disposing between the heat-dissipating fins, heat generated during the operation of the diode light-emitting apparatus is distributed uniformly on the heat-dissipating plate device and the heat-dissipating fins due to the high efficiency heat-conducting of the heat-conducting devices, and then is dissipated. Besides, the shield device has a waterproof passage for a power cord passing through to power a control circuit, such that the light-emitting diode illuminating equipment is adapted to be installed outdoors.

Claims

1. An outdoor light-emitting diode illuminating equipment, comprising:

a heat-dissipating plate device having a first surface and a second surface;

a plurality of heat-dissipating fins contacting the second surface;

a first heat-conducting device having a first portion and a second portion having a flat area, the first portion being mounted on the first surface of the heat-dissipating plate device;

a diode light-emitting apparatus disposed on the flat area of the second portion of the first heat-conducting device, the diode light-emitting apparatus converting an electric energy into a light; and

a shield device engaged with the heat-dissipating plate device to form a sealed space accommodating the diode light-emitting apparatus and the first heat-conducting device;

wherein the shield device has a transparent shield enabling the light emitted by the diode light-emitting apparatus to pass through.

2. The light-emitting diode illuminating equipment of claim 1, wherein the shield device is engaged with a circumference of the heat-dissipating plate device via a heat-isolating ring.

3. The light-emitting diode illuminating equipment of claim 1, further comprising a plurality of second heat-conducting devices disposed on the first surface of the heat-dissipating plate device.

4. The light-emitting diode illuminating equipment of claim 1, further comprising a plurality of second heat-conducting devices contacting the heat-dissipating plate device.

5. The light-emitting diode illuminating equipment of claim 1, wherein the first heat-conducting device is a heat pipe or a vapor chamber.

6. The light-emitting diode illuminating equipment of claim 1, wherein the diode light-emitting apparatus comprises at least one light-emitting diode chip or at least one laser diode chip.

7. The light-emitting diode illuminating equipment of claim 1, wherein a direction of the light emitted by the diode light-emitting apparatus is substantially parallel to the heat-dissipating plate device.

8. The light-emitting diode illuminating equipment of claim 1, further comprising a control circuit electrically connected to the diode light-emitting apparatus for controlling the diode light-emitting apparatus to emit the light.

9. The light-emitting diode illuminating equipment of claim 8, wherein the control circuit is disposed in the sealed space.

10. The light-emitting diode illuminating equipment of claim 8, wherein the shield device has a waterproof passage for a power cord passing through to power the control circuit.

11. The light-emitting diode illuminating equipment of claim 8, wherein the shield device has a waterproof connector for electrically connecting the control circuit and a power source.

21. The light-emitting diode illuminating equipment of claim 1, wherein the flat area of the second portion of the first heat-conducting device is at an end of the first heat-conducting device.

12. An outdoor light-emitting diode illuminating equipment, comprising:

a heat-dissipating device having a center hole, a circumference, a front, and a rear;

a plurality of heat-dissipating fins surrounding the circumference of the heat-dissipating device;

a heat-conducting device having a flat end, the heat-conducting device being tightly mounted on a inner wall of the center hole, the flat end of the heat-conducting device being disposed outside the heat-conducting device;

a diode light-emitting apparatus disposed on the flat end of the heat-conducting device, the diode light-emitting apparatus converting an electric energy into a light; and

a first shield device engaged with the front of the heat-dissipating device to accommodate the diode light-emitting apparatus;

wherein the first shield device has a transparent shield enabling the light emitted by the diode light-emitting apparatus to pass through.

13. The light-emitting diode illuminating equipment of claim 12, wherein the first shield device is engaged with the front of the heat-dissipating device via a first heat-isolating ring.

14. The light-emitting diode illuminating equipment of claim 12, wherein the heat-conducting device is a heat pipe or a vapor chamber.

15. The light-emitting diode illuminating equipment of claim 12, wherein the diode light-emitting apparatus comprises at least one light-emitting diode chip or at least one laser diode chip.

16. The light-emitting diode illuminating equipment of claim 12, further comprising a control circuit electrically connected to the diode light-emitting apparatus for controlling the diode light-emitting apparatus to emit the light.

17. The light-emitting diode illuminating equipment of claim 16, further comprising a second shield device engaged with the rear of the heat-dissipating device to accommodate the control circuit.

18. The light-emitting diode illuminating equipment of claim 17, wherein the second shield device is engaged with the rear of the heat-dissipating device via a second heat-isolating ring.

19. The light-emitting diode illuminating equipment of claim 17, wherein the second shield device has a waterproof passage for a power cord passing through to power the control circuit.

20. The light-emitting diode illuminating equipment of claim 17, wherein the second shield device has a waterproof connector for electrically connecting the control circuit and a power source.