Title:
LIGHT SOURCE DEVICE AND PROJECTOR
Document Type and Number:
Japanese Patent JP3664065
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a light source device by which the life time of a light source lamp is prolonged by preventing a burst piece from being dropped outside, even if the light source lamp bursts and also efficiently cooling it.
SOLUTION: A pair of aperture parts 302, arranged symmetrically by centering the optical axis of a reflector 412, is formed on the abutting surface of a transparent plate 301 and the reflector 412, and a housing 300 is provided with a cooling passage 340 for guiding cooling air to the light source lamp 411 through the pair of the aperture parts 302 and a first and second cooling passage opening/closing parts 350 and 360 for clogging the cooling passage 340 at detaching from a projector 1. The light source lamp 411 is cooled efficiently, and the life time of the light source lamp 411 can be prolonged. Even though the light-emitting tube of the light source lamp 411 bursts while using the projector 1, the burst piece of the light emitting tube will not drop outside at the replacing of the light source device 413, and the cooling efficiency of the light source lamp 411 will not be spoiled.
Inventors:
Yamada Haruyoshi
Nobuo Watanabe
Nobuo Watanabe
Application Number:
JP2000299639A
Publication Date:
June 22, 2005
Filing Date:
September 29, 2000
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
G03B21/14; F21V29/00; F21V29/02; G03B21/16; G03B21/20; F21Y101/00; (IPC1-7): G03B21/14; F21V29/00; F21V29/02
Domestic Patent References:
| JP2000221599A | ||||
| JP2000200511A | ||||
| JP2000056396A | ||||
| JP2000036214A | ||||
| JP11329015A | ||||
| JP11237691A | ||||
| JP11111046A | ||||
| JP10254061A | ||||
| JP63054136U |
Attorney, Agent or Firm:
Kinoshita Minoru
Kanji Nakayama
Tsuyoshi Ishizaki
Kanji Nakayama
Tsuyoshi Ishizaki