Light source module

Patent metadata

Field	Value
Publication number	US-2016018723-A1
Application number	US-201514731412-A
Country	US
Kind code	A1
Filing date	Jun 5, 2015
Priority date	Jul 15, 2014
Publication date	Jan 21, 2016
Grant date	—

Abstract

A light source module adapted to a projector includes a light source, a light combining system, a first cooling fan, a second cooling fan, a first guide duct and a second guide duct. The light source includes a first light emitting device and a second light emitting device. The light combining system is disposed between the first light emitting device and the second light emitting device. The first cooling fan is disposed on the first light emitting device. The second cooling fan is disposed on the second light emitting device. The first guide duct is connected to the first cooling fan and guides a cooling airflow provided by the first cooling fan to the second light emitting device. The second guide duct is connected to the second cooling fan and guides a cooling airflow provided by the second cooling fan to the first light emitting device.

First claim

What is claimed is:

1 . A light source module, adapted to a projector, comprising:
a light source, comprising a first light emitting device and a second light emitting device; a light combining system, disposed between the first light emitting device and the second light emitting device; a first cooling fan, disposed at a side of the first light emitting device; a second cooling fan, disposed at a side of the second light emitting device; a first guide duct, connected to the first cooling fan, and guiding a cooling airflow provided by the first cooling fan to the second light emitting device; and a second guide duct, connected to the second cooling fan, and guiding a cooling airflow provided by the second cooling fan to the first light emitting device.

2 . The light source module as claimed in claim 1 , wherein a beam emitted by the first light emitting device and a beam emitted by the second light emitting device are respectively transmitted to the light combining system along a first optical axis and a second optical axis.

3 . The light source module as claimed in claim 2 , wherein the first light emitting device has a first portion and a second portion, the second light emitting device has a third portion and a fourth portion, the first portion and the second portion are respectively aligned to the third portion and the fourth portion, the first optical axis is located between the first portion and the second portion, the second optical axis is located between the third portion and the fourth portion, the first cooling fan has a first air outlet, the second cooling fan has a second air outlet, the first air outlet is located at the first portion and is connected to the first guide duct, and the second air outlet is located at the fourth portion and is connected to the second guide duct.

4 . The light source module as claimed in claim 2 , wherein the beam emitted by the first light emitting device and the beam emitted by the second light emitting device are transmitted along a third optical axis after passing through the light combining system, and the first optical axis and the second optical axis are perpendicular to the third optical axis.

5 . The light source module as claimed in claim 1 , wherein the first guide duct has a first bending section bending towards the second light emitting device, the second guide duct has a second bending section bending towards the first light emitting deice, a bending angle of the first bending section is not greater than 90 degrees, and a bending angle of the second bending section is not greater than 90 degrees.

6 . The light source module as claimed in claim 1 , further comprising a third cooling fan and a fourth cooling fan, the first cooling fan and the third cooling fan are respectively disposed at two opposite sides of the first light emitting device, and the second cooling fan and the fourth cooling fan are respectively disposed at two opposite sides of the second light emitting device.

7 . The light source module as claimed in claim 6 , further comprising a third guide duct and a fourth guide duct, the third guide duct is connected to the third cooling fan and guides a cooling airflow provided by the third cooling fan to the second light emitting device, and the fourth guide duct is connected to the fourth cooling fan and guides a cooling airflow provided by the fourth cooling fan to the first light emitting device.

8 . The light source module as claimed in claim 7 , wherein the light source has a top side and a bottom side opposite to each other, the first cooling fan and the second cooling fan are located at the top side, the third cooling fan and the fourth cooling fan are located at the bottom side, and an air output of the first cooling fan and the second cooling fan is greater than an air output of the third cooling fan and the fourth cooling fan.

9 . The light source module as claimed in claim 1 , wherein the first light emitting device comprises a first lampshade and a first light emitting element, the second light emitting device comprises a second lampshade and a second light emitting element, the first light emitting element and the second light emitting element are respectively disposed in the first lampshade and the second lampshade, the first lampshade and the second lampshade respectively have a first opening end and a second opening end, the first opening end faces the second opening end, the first guide duct extends form the first cooling fan towards the second opening end, and the second guide duct extends from the second cooling fan towards the first opening end.

10 . The light source module as claimed in claim 9 , wherein the first cooling fan is disposed at a side of the first lampshade, and the second cooling fan is disposed at a side of the second lampshade.

Assignees

• Lin Tsung-Ching
• Hou Kai-Lun
• Chen Te-Tang
• Coretronic Corp

Inventors

• Lin Tsung-Ching
• Hou Kai-Lun
• Chen Te-Tang

Classifications

• G03B21/2013

  Plural light sources · CPC title

• G03B21/16 Primary

  Cooling; Preventing overheating · CPC title