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:
Jun. 17, 2014
Filed:
Jul. 31, 2012
Sinsuke Minaki, Niigata, JP;
Jun Matsuzaki, Niigata, JP;
Tadahiro Kono, Niigata, JP;
Koji Yamashita, Niigata, JP;
Hiroyuki Matsumoto, Osaka, JP;
Atusi Ootubo, Osaka, JP;
Sinsuke Minaki, Niigata, JP;
Jun Matsuzaki, Niigata, JP;
Tadahiro Kono, Niigata, JP;
Koji Yamashita, Niigata, JP;
Hiroyuki Matsumoto, Osaka, JP;
Atusi Ootubo, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An illumination apparatus including: a power supply circuit which outputs a DC power obtained by rectifying an AC voltage and stepping up the rectified voltage; a light source unit having semiconductor light emitting elements turned on by the DC power; and a housing formed of a conductive material that is grounded through a ground path and on which the power supply circuit and the light source unit are mounted. When one of power feed lines is cut off, the light emitting elements are supplied with an AC power from an AC power source through the ground path and a stray capacitance formed between the light source unit and the housing, and a forward voltage of the light emitting elements has a light emission level hardly recognizable.