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Title:
DISCHARGE LAMP LIGHTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2008/010351
Kind Code:
A1
Abstract:
A discharge lamp lighting device comprising a first series circuit section constituted by connecting a primary coil and a capacitor in series, a second series circuit section constituted by connecting a discharge lamp in series with a secondary coil which is a winding wound on the side face portion of a rod-like core along the axial direction thereof with a number of turns larger than that of the primary coil, which consists of a winding having a cross-sectional dimension in the direction parallel with the axial direction of the core smaller than that in the radial direction thereof and which constitutes a transformer together with the primary coil, and a bridge type DC/AC conversion circuit having four transistors, converting a DC voltage from a power supply section into an AC voltage and supplying the AC voltage across the first and second series circuits connected in parallel, wherein a voltage can be generated by a small and simple circuit when a lamp is started, and preheat control can be carried out.

Inventors:
IWAO AKIO (JP)
Application Number:
PCT/JP2007/061015
Publication Date:
January 24, 2008
Filing Date:
May 30, 2007
Export Citation:
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Assignee:
HARISON TOSHIBA LIGHTING CORP (JP)
IWAO AKIO (JP)
International Classes:
H05B41/24; H05B41/02; H05B41/18; H05B41/231
Foreign References:
JP2002343590A2002-11-29
JPH0554988A1993-03-05
JPH05283187A1993-10-29
JP2003272880A2003-09-26
JPH10284265A1998-10-23
JP2005507553A2005-03-17
JP2006198591A2006-08-03
JP2006260565A2006-09-28
JP2006260566A2006-09-28
Attorney, Agent or Firm:
ITOH, Susumu (4-4 Nishishinjuku 7-chome,Shinjuku-k, Tokyo 23, JP)
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