Portable projector using an LED and related heat dissipating system

Abstract

A portable projector with heat dissipating system is disclosed. The portable projector has a housing, at least a light source and a heat dissipating system, which comprises a heat dissipating tunnel, a light source heat dissipating module, and a fan. The heat dissipating tunnel has an inlet and an outlet such that air is able to enter the portable projector through the inlet and exit from it through the outlet. The light source heat dissipating module has at least one heat sink coupled to each light source for dissipating heat generated by each light source, and a heat pipe coupled to each heat sink for collecting heat dissipated by each heat sink to the heat dissipating tunnel, and the fan is located at the outlet of the heat dissipating tunnel for dissipating heat collected by the heat dissipating tunnel to the outside of the housing of the portable projector.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an internal layout schematic drawing of a portable projector according to the present invention.

FIG. 2A is a layout schematic of a light source heat dissipating module of an embodiment according to the present invention.

FIG. 2B is a layout schematic of a light source heat dissipating module of another embodiment according to the present invention.

Claims

1. A portable projector comprising: a housing;at least one light source located in the housing, each one of the at least one light source being an LED; anda heat dissipating system located in the housing for dissipating heat generated by the at least one light source, the heat dissipating system comprising:a heat dissipating tunnel having an inlet and an outlet such that air is able to enter the portable projector through the inlet and exit through the outlet;a light source heat dissipating module comprising: at least one heat sink, each one of the at least one heat sink coupled to a respective light source of the at least one light source, each heat sink having a plurality of fins, the at least one heat sink being used for dissipating heat generated by the respective light source; andat least one heat pipe, each one of the at least one heat pipe coupled to a respective heat sink for transferring heat dissipated by each heat sink to the heat dissipating tunnel; anda fan located at the outlet of the heat dissipating tunnel for removing heat collected by the heat dissipating tunnel to the outside of the housing of the portable projector.

2. The portable projector as claimed in claim 1, wherein the housing is made of a highly thermally conductive material.

3. The portable projector as claimed in claim 1, wherein the highly thermally conductive material is aluminum or an aluminum-magnesium alloy.

4. The portable projector as claimed in claim 1, wherein the heat dissipating system further comprises at least one thermal pad, each one of the at least one thermal pad is disposed between each light source and each heat sink.

5. The portable projector as claimed in claim 1, wherein the heat dissipating system further comprises at least one heat transfer compound, each one of the at least one heat transfer compound is coated between each light source and each heat sink.

6. The portable projector as claimed in claim 1, wherein the at least one heat sink is made of aluminum or copper.

7. The portable projector as claimed in claim 1, wherein the at least one heat pipe is made of stainless steel or copper.

8. The portable projector as claimed in claim 1, wherein the at least one heat sink is placed in the heat dissipating tunnel so air can enter from the inlet, pass through gaps among the plurality of fins, and transmit the heat dissipated by the at least one heat sink to the outlet so the heat is removed from the portable projector.

9. A portable projector comprising: a housing;at least one light source located in the housing, each one of the at least one light source being an LED; anda heat dissipating system located in the housing for dissipating heat generated by the at least one light source, the heat dissipating system comprising:a light source heat dissipating module comprising: at least one heat sink, each one of the at least one heat sink coupled to a respective light source of the at least one light source, each heat sink having a plurality of fins, the at least one heat sink being used for dissipating heat generated by the at least one light source;a heat pipe filled with a fluid, each one of the at least one heat pipe coupled to a respective heat sink for transferring heat dissipated by each heat sink to the heat dissipating tunnel; anda pump coupled to the heat pipe for moving the fluid in the heat pipe so the fluid is able to flow in the heat pipe.

10. The portable projector as claimed in claim 9, wherein the housing is made of a highly thermally conductive material and contacts one of the at least one heat sink, and the heat is collected at the heat pipe so the heat can be dissipated outside of the portable projector via the housing.

11. The portable projector as claimed in claim 10, wherein the highly thermally conductive material is aluminum or an aluminum-magnesium alloy.

12. The portable projector as claimed in claim 9, wherein the heat dissipating system further comprises a heat dissipating tunnel, the heat dissipating tunnel having an inlet and an outlet such that air is able to enter the portable projector through the inlet and exit through the outlet.

13. The portable projector as claimed in claim 12, wherein the heat dissipating system further comprises a fan located at the outlet of the heat dissipating tunnel and is used for removing heat collected by the heat dissipating tunnel to the outside of the housing of the portable projector.

14. The portable projector as claimed in claim 13, wherein the at least one heat sink is disposed in the heat dissipating tunnel so air can enter from the inlet, pass through gaps among the plurality of fins, and transmit the heat dissipated by the at least one heat sink to the outlet so the heat is removed from the portable projector by the fan.

15. The portable projector as claimed in claim 9, wherein the heat dissipating system further comprises at least one thermal pad, each one of the at least one thermal pad is disposed between each light source and each heat sink.

16. The portable projector as claimed in claim 9, wherein the heat dissipating system further comprises at least one heat transfer compound, each one of the at least one heat transfer compound is coated between each light source and each heat sink.

17. The portable projector as claimed in claim 9, wherein each light source of the at least one light source is an LED.