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:
Aug. 19, 2014
Filed:
Apr. 21, 2011
Hiroshi Maehara, Niiza, JP;
Hiroyuki Inoue, Fujisawa, JP;
Hideharu Saito, Yokohama, JP;
Takashi Omori, Yokohama, JP;
Hiroshi Maehara, Niiza, JP;
Hiroyuki Inoue, Fujisawa, JP;
Hideharu Saito, Yokohama, JP;
Takashi Omori, Yokohama, JP;
Hitachi Consumer Electronics Co., Ltd., Tokyo, JP;
Abstract
Cooling air conveyed through a cooling ductis supplied to a discharge lampvia a cooling air exithaving a plurality of flow pathstopartitioned by a partition plate. An air flow direction changeover sectionchanges a flow path through which the discharge lamp is supplied with the cooling air from the cooling air exit. An air flow blocking ballin the air flow direction changeover section moves by its own weight through a guide portionto thereby block the flow path of the cooling air exit. This allows the cooling air to be directed specifically toward an upper sidein a direction of gravity of a lamp bulb of the discharge lamp to eliminate a temperature difference, even if a mounting style of the discharge lamp is varied among desk mounting, ceiling mounting, and vertical mounting.