Title:
無電極蛍光ランプ及びその点灯装置
Document Type and Number:
Japanese Patent JP4258380
Kind Code:
B2
Abstract:
In an electrodeless fluorescent lamp, even when it is lighted in a state that a temperature in a bulb is not increased sufficiently such as in use in a cool-temperature environment or in dimming lighting, deterioration of light output of the electrodeless fluorescent lamp due to insufficiency of mercury on a surface of an amalgam which is to be supplied to a discharge space is prevented. Therefore, a metal container (7) is disposed inside an induction coil (13). A high frequency current on which a current for induction heating is superimposed is applied to the induction coil (13) so that the metal container (7) is heated with induction heating, and thereby, the amalgam therein is heated. The heated amalgam becomes a mixture of liquid-phase and solid-phase, and thus, an amount of mercury enough for supplying it into a discharge space inside the bulb can be maintained on the surface of the amalgam.
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Inventors:
Koji Hiramatsu
Atsushi Okada
Shigeki Matsuo
Shinji Hizuma
Kazuhiko Sakai
Atsushi Okada
Shigeki Matsuo
Shinji Hizuma
Kazuhiko Sakai
Application Number:
JP2004000557A
Publication Date:
April 30, 2009
Filing Date:
January 05, 2004
Export Citation:
Assignee:
Panasonic Electric Works Co., Ltd.
International Classes:
F21S2/00; H01J65/04; H01J61/28; H05B41/24; F21Y101/00
Domestic Patent References:
| JP9320523A | ||||
| JP2003234084A | ||||
| JP2000340380A | ||||
| JP2001507509A | ||||
| JP9017582A |
Foreign References:
| WO2001035446A1 |
Attorney, Agent or Firm:
Keisei Nishikawa
Atsuo Mori
Atsuo Mori