Light source device

• US 8,591,067 B2
• Filed: 11/11/2010
• Issued: 11/26/2013
• Est. Priority Date: 08/06/2010
• Status: Active Grant

• Current Assignee: Cheer Shine Lighting Enterprises, Ltd., Industrial Technology Research Institute
• Original Assignee: Cheer Shine Lighting Enterprises, Ltd., Industrial Technology Research Institute
• Inventors: Lin, Ming-Te, Lin, Ming-Yao, Tai, Kuang-Yu, Yang, Po-Cheng
• Primary Examiner(s): Makiya, David J
• Application Number:
  US12/944,698
• Publication Number:
  US 20120032588A1
• Time in Patent Office: 1,111 Days
• Field of Search: 362/294, 362/373
• US Class Current: 362/294
• CPC Class Codes: F21K 9/23 Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
• CPC Class Codes: F21V 29/506 of globes, bowls or cover glasses
• CPC Class Codes: F21V 29/673 the fans being used for intake
• CPC Class Codes: F21V 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• 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: F21W 2121/00 Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A light source device having a good heat dissipation capability is disclosed, in which heat generated by a light emitting device is conducted to a base fabricated by a porous material through a heat conducting mask or a heat conducting pipe. Due to a large area contact between the heat conducting mask or the heat conducting pipe and the base, the heat can be evenly conducted to the base, so that the base can absorb the heat and dissipate the heat to external, so as to improve a heat dissipation efficiency. Moreover, in the light source device of the disclosure, heat exchange of the light emitting device can be directly carried on through air convection, so that the heat generated by the light emitting device can be taken away from the light source device through heat exchange of cool air.

Claims

1. A light source device, comprising:

a first diversion pipe, having a first end and a second end opposite to the first end, and having a first air channel;

a second diversion pipe, having a first end and a second end opposite to the first end, wherein the first diversion pipe is sleeved by the second diversion pipe, the first end of the first diversion pipe is adjacent to the first end of the second diversion pipe, a second air channel is formed between the first diversion pipe and the second diversion pipe, and an air-flowing direction of the first air channel is parallel and opposite to an air-flowing direction of the second air channel;

a light emitting device, connected to the first end of the second diversion pipe, wherein the first air channel and the second air channel are connected at a place where the light emitting device is located;

a fan, disposed at the second end of the first diversion pipe;

a base connected to the second end of the first diversion pipe and the second end of the second diversion pipe, wherein the fan is located between the first diversion pipe and the base; and

a power connection base, connected to a bottom of the base and electrically connected to the light emitting device and the fan, wherein a bottom surface of the power connection base has a first pore, and the first pore is connected to the first air channel, the base has a second pore, and the second pore is connected to the second air channel.

2. The light source device as claimed in claim 1, further comprising a heat conducting slug disposed between the light emitting device and the first end of the second diversion pipe.

3. The light source device as claimed in claim 1, further comprising a lamp mask connected to the base, wherein the lamp mask and the base commonly form a containing space, and the first diversion pipe, the second diversion pipe, the light emitting device and the fan are located in the containing space.

4. The light source device as claimed in claim 1, wherein the second air channel is a helical channel winded along the first diversion pipe.

5. The light source device as claimed in claim 4, wherein a pipe surface of the second diversion pipe has a spiral shape.

6. The light source device as claimed in claim 1, further comprising a turbulence structure located in the second air channel.

7. The light source device as claimed in claim 6, wherein the turbulence structure comprises a helical structure formed on the first diversion pipe or the second diversion pipe.

8. The light source device as claimed in claim 6, wherein the turbulence structure comprises a helical spring disposed between the first diversion pipe and the second diversion pipe.

9. The light source device as claimed in claim 1, wherein a material of the first diversion pipe comprises a porous material.

10. The light source device as claimed in claim 9, wherein the porous material comprises a porcelain material or a porous metal material.

11. The light source device as claimed in claim 1, wherein a material of the second diversion pipe comprises a metal material.

23. The light source device as claimed in claim 1, wherein a thermal conduction coefficient of the second diversion pipe is different from a thermal conduction coefficient of the first diversion pipe.

12. A light source device, comprising:

a first diversion pipe, having a first end and a second end opposite to the first end, and having a first air channel;

a second diversion pipe, having a first end and a second end opposite to the first end, wherein the first diversion pipe is sleeved by the second diversion pipe, the first end of the first diversion pipe is adjacent to the first end of the second diversion pipe, a second air channel is formed between the first diversion pipe and the second diversion pipe, and an air-flowing direction of the first air channel is parallel and opposite to an air-flowing direction of the second air channel;

a light emitting device, connected to the first end of the second diversion pipe, wherein the first air channel and the second air channel are connected at a place where the light emitting device is located;

a fan, disposed at the second end of the first diversion pipe; and

a base, connected to the second end of the first diversion pipe and the second end of the second diversion pipe, wherein the fan is located between the first diversion pipe and the base, the base has a first pore and a second pore, the first pore is connected to the first air channel, and the second pore is connected to the second air channel.

13. The light source device as claimed in claim 12, further comprising a heat conducting slug disposed between the light emitting device and the first end of the second diversion pipe.

14. The light source device as claimed in claim 12, further comprising a lamp mask connected to the base, wherein the lamp mask and the base commonly form a containing space, and the first diversion pipe, the second diversion pipe, the light emitting device and the fan are located in the containing space.

15. The light source device as claimed in claim 12, wherein the second air channel is a helical channel winded along the first diversion pipe.

16. The light source device as claimed in claim 15, wherein a pipe surface of the second diversion pipe has a spiral shape.

17. The light source device as claimed in claim 12, further comprising a turbulence structure located in the second air channel.

18. The light source device as claimed in claim 17, wherein the turbulence structure comprises a helical structure formed on the first diversion pipe or the second diversion pipe.

19. The light source device as claimed in claim 17, wherein the turbulence structure comprises a helical spring disposed between the first diversion pipe and the second diversion pipe.

20. The light source device as claimed in claim 12, wherein a material of the first diversion pipe comprises a porous material.

21. The light source device as claimed in claim 20, wherein the porous material comprises a porcelain material or a porous metal material.

22. The light source device as claimed in claim 12, wherein a material of the second diversion pipe comprises a metal material.

24. The light source device as claimed in claim 12, wherein a thermal conduction coefficient of the second diversion pipe is different from a thermal conduction coefficient of the first diversion pipe.