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:
Jul. 31, 2012
Filed:
Jan. 28, 2009
Akira Yufuku, Himeji, JP;
Hiroyasu Eriguchi, Neyagawa, JP;
Takeshi Goriki, Yawata, JP;
Takeshi Kamoi, Kyoto, JP;
Jun Kumagai, Suita, JP;
Naoki Komatsu, Kobe, JP;
Nobutoshi Matsuzaki, Neyagawa, JP;
Satoru Nagata, Kobe, JP;
Daisuke Yamahara, Shijonawate, JP;
Akira Yufuku, Himeji, JP;
Hiroyasu Eriguchi, Neyagawa, JP;
Takeshi Goriki, Yawata, JP;
Takeshi Kamoi, Kyoto, JP;
Jun Kumagai, Suita, JP;
Naoki Komatsu, Kobe, JP;
Nobutoshi Matsuzaki, Neyagawa, JP;
Satoru Nagata, Kobe, JP;
Daisuke Yamahara, Shijonawate, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A high pressure discharge lamp lighting device in this invention comprises a converter, an inverter, an igniter, a controller, and a pulse voltage detection circuit. The converter outputs the direct current voltage. The inverter converts the direct current voltage into the lighting voltage which is alternating current voltage, and applies the lighting voltage to the high pressure discharge lamp through an output terminal. The igniter is configured to output the pulse voltage superimposed on the lighting voltage, whereby the starting voltage is applied to the high pressure discharge lamp. The controller is configured to control the igniter to allow the igniter to superimpose the pulse voltage on the lighting voltage. The pulse voltage detection circuit detects the starting voltage to output the detection signal. The starting voltage regulation circuit regulates the starting voltage to the desired voltage value of the voltage on the basis of the detection signal.