The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 02, 2010
Filed:
Dec. 02, 2005
Kimito Nishikawa, Tokyo, JP;
Yoshinori Kakuta, Tokyo, JP;
Kimito Nishikawa, Tokyo, JP;
Yoshinori Kakuta, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A light source device () includes a lamp unit () and a lamp cartridge () in which the lamp unit () is housed. The lamp unit () includes a discharge lamp (), a reflection mirror () and a transparent plate (). The reflection mirror () has ventilation openings (). The lamp cartridge () has ventilation openings (and). Fragment-passage prevention members (and) are provided on the ventilation openings (and). The fragment-passage prevention members () allow the passage of the air but prevent the passage of the fragments of the discharge lamp (). With such an arrangement, it is possible to prevent the fragments from being scattered out of the lamp cartridge (), even when the breakage of the discharge lamp () occurs.