Title:
CERAMIC METAL HALIDE LAMP ILLUMINATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/172926
Kind Code:
A1
Abstract:
Provided is a ceramic metal halide lamp illumination device in which only a single easily lit light-emitting tube is lit from among a plurality of light-emitting tubes, the purpose being to shorten the restart time and achieve an instantaneous restart. An illumination device comprises a ceramic metal halide lamp and a drive circuit. The ceramic metal halide lamp has a plurality of light-emitting tubes within a single outer globe. In the lamp, only a single easily lit light-emitting tube is normally lit. In order to suppress heat transmission from one light-emitting tube that is lit to another light-emitting tube that is not lit, a translucent heat-screening member is arranged among the plurality of light-emitting tubes. On restarting, the drive circuit applies a pulse voltage of 2.5 to 4.5 kV to the lamp.
Inventors:
OHKAHARA MAKOTO (JP)
MAEHARA AKIYOSHI (JP)
MATSUMOTO YASUHISA (JP)
NISHIMURA JUNPEI (JP)
MAEHARA AKIYOSHI (JP)
MATSUMOTO YASUHISA (JP)
NISHIMURA JUNPEI (JP)
Application Number:
PCT/JP2012/062869
Publication Date:
December 20, 2012
Filing Date:
May 18, 2012
Export Citation:
Assignee:
IWASAKI ELECTRIC CO LTD (JP)
OHKAHARA MAKOTO (JP)
MAEHARA AKIYOSHI (JP)
MATSUMOTO YASUHISA (JP)
NISHIMURA JUNPEI (JP)
OHKAHARA MAKOTO (JP)
MAEHARA AKIYOSHI (JP)
MATSUMOTO YASUHISA (JP)
NISHIMURA JUNPEI (JP)
International Classes:
H01J61/34; F21V29/00; H01J61/92; H05B41/24; F21Y101/00
Foreign References:
| JPS54154174A | 1979-12-05 | |||
| JP2010045055A | 2010-02-25 | |||
| JP2008234871A | 2008-10-02 | |||
| JP2003100256A | 2003-04-04 | |||
| JP2012038665A | 2012-02-23 |
Attorney, Agent or Firm:
TAKAHASHI TOSHIHIRO (JP)
Takahashi 要泰 (JP)
Takahashi 要泰 (JP)
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Claims: