Invention Grant
- Patent Title: Electrodeless discharge lamp apparatus and lighting fixture with the electrodeless discharge lamp apparatus
- Patent Title (中): 无电极放电灯装置及具有无极放电灯装置的照明器具
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Application No.: US12064730Application Date: 2005-09-28
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Publication No.: US07884546B2Publication Date: 2011-02-08
- Inventor: Hiroshi Ogasawara , Hiroshi Miyasaki , Hidenori Kakehashi , Keisuke Harada , Yoshinobu Shibata
- Applicant: Hiroshi Ogasawara , Hiroshi Miyasaki , Hidenori Kakehashi , Keisuke Harada , Yoshinobu Shibata
- Applicant Address: JP Osaka JP Hyogo
- Assignee: Panasonic Electric Works Co., Ltd.,Ikeda Electric Co., Ltd.
- Current Assignee: Panasonic Electric Works Co., Ltd.,Ikeda Electric Co., Ltd.
- Current Assignee Address: JP Osaka JP Hyogo
- Agency: Greenblum & Bernstein, P.L.C.
- Priority: JP2005-246835 20050826
- International Application: PCT/JP2005/017883 WO 20050928
- International Announcement: WO2007/023573 WO 20070301
- Main IPC: H01J11/00
- IPC: H01J11/00 ; H01J17/00 ; H01J61/00 ; H01J61/28 ; H01K1/50

Abstract:
An electrodeless discharge lamp apparatus is provided which is increased in heat dissipation, making it possible to adapt to an increase in output of the apparatus. The electrodeless discharge lamp apparatus comprises a bulb containing a discharge gas and a coupler accommodated in a cavity formed in the bulb for generating a high frequency electromagnetic field. The coupler has: an induction coil; a core inserted into the coil; a heat conductor for conducting heat generated from the coil and the core; and a bobbin made of resin which accommodates the core and the heat conductor therein, and which has the coil wound therearound. The bobbin is designed to be separated in a radial direction of the coil, so that it is possible to separately mold the respective parts of the bobbin. Thus, it is not necessary to form, in the bobbin, a draft angle which has been necessary in the prior art when molding a tubular-shaped bobbin, and it is possible to make the thickness of the bobbin thin and uniform, so that the proportion of the bobbin in the volume of the cavity can be reduced to increase the proportion of the heat conductor.
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