Light source module and projection apparatus

Patent metadata

Field	Value
Publication number	US-9400418-B2
Application number	US-201414458271-A
Country	US
Kind code	B2
Filing date	Aug 13, 2014
Priority date	Nov 14, 2013
Publication date	Jul 26, 2016
Grant date	Jul 26, 2016

Abstract

A light source module and a projection apparatus including the light source module, an optical engine module, and a projection lens are provided. The light source module includes a lamp holder, a casing, a light source, and a heat dissipation fan. The lamp holder has a cover having a first inlet and a first outlet. The casing is connected to the lamp holder and has a second inlet and at least one second outlet. The light source is fixed to the lamp holder fixed to a housing of the projection apparatus. The heat dissipation fan generates a heat dissipation airflow through an outflow side. A first part of the heat dissipation airflow enters the cover through the first inlet, and leaves the cover through the first outlet. A second part of the heat dissipation airflow enters the casing through the second inlet, and leaves the casing through the second outlet.

First claim

What is claimed is:

1. A light source module, adapted to a projection apparatus, wherein the projection apparatus has a housing, the light source module comprising:
a lamp holder, fixed to the housing and having a cover, wherein the cover has a first inlet and a first outlet;
a casing, connected to the lamp holder and having a containing space, a second inlet, and at least one second outlet, wherein the containing space is located between the second inlet and the second outlet, the casing further has a shielding part, and the shielding part extends from a first edge of the second outlet and shields the second outlet;
a light source, fixed to the lamp holder, wherein the containing space contains the light source; and
a heat dissipation fan, having an outflow side, wherein the first inlet and the second inlet face the outflow side, the heat dissipation fan generates a heat dissipation airflow through the outflow side, a first part of the heat dissipation airflow enters the cover through the first inlet and leaves the cover through the first outlet, and a second part of the heat dissipation airflow enters the casing through the second inlet and leaves the casing through the second outlet.

2. The light source module as claimed in claim 1 , wherein the light source has a light-emitting end and a back end opposite to the light-emitting end, and the light-emitting end faces the cover.

3. The light source module as claimed in claim 2 , wherein the casing further has a shielding wall, and the back end faces the shielding wall and is shielded by the shielding wall.

4. The light source module as claimed in claim 1 , further comprising a frame, wherein the frame is fixed to the housing, and the heat dissipation fan is fixed to the frame.

5. The light source module as claimed in claim 1 , further comprising an air-guiding structure disposed between the outflow side and the first inlet.

6. The light source module as claimed in claim 1 , wherein the cover further has a first side and a second side opposite to the first side, the first side faces the outflow side, the first inlet is formed at the first side, and the first outlet is formed at the second side.

7. The light source module as claimed in claim 1 , wherein the casing further has a third side and a fourth side opposite to the third side, the third side faces the outflow side, the second inlet is formed at the third side, and the second outlet is formed at the fourth side.

8. The light source module as claimed in claim 1 , wherein the casing further has a third side, a fourth side, and a top wall, the third side faces the outflow side and is opposite to the fourth side, the top wall is connected between the third side and the fourth side, the second inlet is formed at the third side, and the second outlet is formed on the top wall.

9. The light source module as claimed in claim 1 , wherein the second outlet has a second edge, the second edge is opposite to the first edge, the shielding part overlaps a portion of the casing, and the portion of the casing is adjacent to the second edge.

10. The light source module as claimed in claim 1 , wherein the first part of the heat dissipation airflow leaves the cover along a first direction, the second part of the heat dissipation airflow leaves the casing along a second direction through guidance of the shielding part, and the first direction is intersected to the second direction.

11. The light source module as claimed in claim 1 , wherein a number of the second outlets is plural.

12. The light source module as claimed in claim 1 , further comprising a handle, wherein the handle is connected to the casing.

13. The light source module as claimed in claim 1 , wherein the cover further has a filter, the light source has a light-emitting end, and the light-emitting end faces the filter.

14. A projection apparatus, having a housing, the projection apparatus comprising:
a light source module configured for providing an illumination beam, the light source module comprises:
a lamp holder, fixed to the housing and having a cover, wherein the cover has a first inlet and a first outlet;
a casing, connected to the lamp holder and having a containing space, a second inlet, and at least one second outlet, wherein the containing space is located between the second inlet and the second outlet, the casing further has a shielding part, and the shielding part extends from a first edge of the second outlet and shields the second outlet;
a light source, fixed to the lamp holder, wherein the containing space contains the light source; and
a heat dissipation fan, having an outflow side, wherein the first inlet and the second inlet face the outflow side, the heat dissipation fan generates a heat dissipation airflow through the outflow side, a first part of the heat dissipation airflow enters the cover through the first inlet and leaves the cover through the first outlet, and a second part of the heat dissipation airflow enters the casing through the second inlet and leaves the casing through the second outlet;

an optical engine module configured for receiving the illumination beam from the light source module, and converting the illumination beam into an image beam; and
a projection lens configured for converting the image beam into a projection beam.

Assignees

• Hu Tung-Chou
• Tseng Li-Wei
• Coretronic Corp

Inventors

• Hu Tung-Chou
• Tseng Li-Wei

Classifications

• G03B21/16 Primary

  Cooling; Preventing overheating · CPC title

• G03B21/20

  Lamp housings · CPC title