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:
Sep. 04, 2012
Filed:
Apr. 24, 2009
Shunsuke Kakisaka, Osaka, JP;
Hiroshi Nohara, Hyogo, JP;
Makoto Inoue, Hyogo, JP;
Panasonic Corporation, Osaka, JP;
Abstract
To aim to provide a lighting apparatus that is compact yet easy in lamp replacement. A lighting apparatuscomprises: a lampincluding an outer tubeand an arc tubeprovided inside the outer tube; and an opening-type lighting fixturehaving a mirror parthaving a concave reflective surfaceinside which the lampis disposed. The mirror partreflects light emitted from the lampat the reflection surfacesuch that the reflected light is emitted through an openingof the mirror part. Relational expressions 22≦r≦28, R≦130, and 3.5≦R/r are satisfied, with r denoting a maximum outer diameter [mm] of the outer tube, and R denoting an opening diameter [mm] of the mirror part