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. 17, 2009
Filed:
Oct. 24, 2003
Hidenori Kakehashi, Takatsuki, JP;
Shohei Yamamoto, Toyonaka, JP;
Koji Hiramatsu, Neyagawa, JP;
Shinji Hizuma, Mito, JP;
Keisuke Harada, Himeji, JP;
Yoshinobu Shibata, Himeji, JP;
Hidenori Kakehashi, Takatsuki, JP;
Shohei Yamamoto, Toyonaka, JP;
Koji Hiramatsu, Neyagawa, JP;
Shinji Hizuma, Mito, JP;
Keisuke Harada, Himeji, JP;
Yoshinobu Shibata, Himeji, JP;
Panasonic Electric Works Co., Ltd., Osaka, JP;
Abstract
An electrodeless discharge lamp comprising: an airtight container bulb made of a transparent material and enclosing a discharge gas; and a coupler (coil assembly body), contained in a cavity formed in the bulb, for generating a high frequency electromagnetic field by conducting a high frequency current in a coil to excite the discharge gas so as to emit light, wherein the coupler comprises: a pipe-shaped cylinder formed of a thermal conductor for heat release; a skeleton-shaped bobbin mounted on an outer surface of the cylinder along an axial direction of the cylinder; a core made of a soft magnetic material provided at an opening formed by the skeleton of the bobbin and being in substantial surface contact with the cylinder; and a coil wound around a surface of the skeleton-shaped bobbin and the core. Thus, the core provided at the opening formed by the skeleton is in substantial surface contact with the cylinder for heat release, so that heat received by the coil from the heat-generating bulb is directly exhausted to the cylinder through the core.