Projector

• US 20080231812A1
• Filed: 03/15/2008
• Published: 09/25/2008
• Est. Priority Date: 03/20/2007
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Sasaki, Fumihide, Sakai, Yohei, Hashimoto, Akira
• Granted Patent: US 7,922,335 B2
• Time in Patent Office: Days
• US Class Current: 353/58
• CPC Class Codes: G03B 21/16 Cooling; Preventing overheating
• CPC Class Codes: H04N 9/3144 Cooling systems cooling of liquid crystal cells in general G02F1/133382; cooling of projectors not peculiar to the presence of an electronic spatial light modulator G03B21/16

Abstract

A projector includes: a light source lamp; and a cooling device that cools the light source lamp and includes a plurality of cooling fans to deliver air toward the light source lamp. Airflow directions in which the plurality of cooling fans deliver the air toward the light source lamp are different from each other.

Claims

1. A projector, comprising:

a light source lamp; and

a cooling device that cools the light source lamp and includes a plurality of cooling fans to deliver air toward the light source lamp, wherein

airflow directions in which the plurality of cooling fans deliver the air toward the light source lamp are different from each other.

2. The projector according to claim 1, wherein

the number of the plurality of cooling fans of the cooling device is two, and

the airflow directions are orthogonal to an optical axis of a light beam irradiated from the light source lamp and are opposed each other when seen in a direction of the optical axis.

3. The projector according to claim 2, wherein

when the projector projects image light in a predetermined posture, the airflow directions are horizontal.

4. The projector according to claim 2, wherein

the airflow directions are displaced from each other in a direction orthogonal to the airflow directions.

5. The projector according to claim 1, wherein

the number of the plurality of cooling fans of the cooling device is two, and

the airflow directions are orthogonal to the optical axis and to each other when seen in a direction of an optical axis of a light beam irradiated from the light source lamp.

6. The projector according to claim 5, wherein

the airflow directions are vertical or horizontal when the projector projects image light in a predetermined posture.

7. The projector according to claim 1, wherein

a fan drive controller that controls the plurality of cooling fans in accordance with a posture of the projector.