EP2381746A3 - Discharge lamp lighting device and illumination fixture using the same - Google Patents

Discharge lamp lighting device and illumination fixture using the same Download PDF

Info

Publication number
EP2381746A3
EP2381746A3 EP11162647.9A EP11162647A EP2381746A3 EP 2381746 A3 EP2381746 A3 EP 2381746A3 EP 11162647 A EP11162647 A EP 11162647A EP 2381746 A3 EP2381746 A3 EP 2381746A3
Authority
EP
European Patent Office
Prior art keywords
discharge lamp
discharge lamps
lighting device
lamp lighting
power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP11162647.9A
Other languages
German (de)
French (fr)
Other versions
EP2381746A2 (en
Inventor
Masahiro Naruo
Shigeru Ido
Kei Mitsuyasu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Intellectual Property Management Co Ltd
Original Assignee
Panasonic Intellectual Property Management Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Intellectual Property Management Co Ltd filed Critical Panasonic Intellectual Property Management Co Ltd
Publication of EP2381746A2 publication Critical patent/EP2381746A2/en
Publication of EP2381746A3 publication Critical patent/EP2381746A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/282—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices
    • H05B41/2825—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices by means of a bridge converter in the final stage
    • H05B41/2827—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices by means of a bridge converter in the final stage using specially adapted components in the load circuit, e.g. feed-back transformers, piezoelectric transformers; using specially adapted load circuit configurations
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/295—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps
    • H05B41/298—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2988—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the lamp against abnormal operating conditions

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

[Object] To provide a discharge lamp lighting device capable of reducing electric stress that is placed on each discharge lamp at the start time, and an illumination fixture using the same.
[Means for Settlement] A plurality of discharge lamps La are lit by AC power to which DC power of a DC power source E is converted by an inverter circuit including a switching part 1 and a resonant part 2. The discharge lamp lighting device is provided with: a drive part 3 that drives respective switching elements Q1 and Q2 constituting the switching part 1; a control part 4 that controls the drive part 3; and a lighting detection part 5 that detects the start of a semi-lighting state where a part of the plurality of discharge lamps La is lit. When the lighting detection part 5 detects the start of the semi-lighting state, the control part 4 controls the drive part 3 so as to sufficiently increase a frequency of the AC power supplied to each of the discharge lamps La to decrease an inter-terminal voltage of each of the discharge lamps La, and thereby electric stress placed on each of the discharge lamps La is reduced.
EP11162647.9A 2010-04-23 2011-04-15 Discharge lamp lighting device and illumination fixture using the same Withdrawn EP2381746A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010100261A JP2011233266A (en) 2010-04-23 2010-04-23 Discharge lamp lighting device and lighting apparatus using the same

Publications (2)

Publication Number Publication Date
EP2381746A2 EP2381746A2 (en) 2011-10-26
EP2381746A3 true EP2381746A3 (en) 2016-09-28

Family

ID=44484883

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11162647.9A Withdrawn EP2381746A3 (en) 2010-04-23 2011-04-15 Discharge lamp lighting device and illumination fixture using the same

Country Status (2)

Country Link
EP (1) EP2381746A3 (en)
JP (1) JP2011233266A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2292843A (en) * 1994-09-02 1996-03-06 Koito Mfg Co Ltd Accelerating cold and hot starting of a discharge lamp
JP2000012269A (en) * 1998-06-25 2000-01-14 Matsushita Electric Works Ltd Discharge lamp lighting device
EP1624730A1 (en) * 2004-08-03 2006-02-08 Minebea Co., Ltd. Discharge lamp lighting apparatus for lighting multiple discharge lamps
JP2008218333A (en) * 2007-03-07 2008-09-18 Matsushita Electric Works Ltd Discharge lamp lighting device and luminaire
JP2010067562A (en) * 2008-09-12 2010-03-25 Panasonic Electric Works Co Ltd Lighting unit, illuminator, liquid crystal display

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2292843A (en) * 1994-09-02 1996-03-06 Koito Mfg Co Ltd Accelerating cold and hot starting of a discharge lamp
JP2000012269A (en) * 1998-06-25 2000-01-14 Matsushita Electric Works Ltd Discharge lamp lighting device
EP1624730A1 (en) * 2004-08-03 2006-02-08 Minebea Co., Ltd. Discharge lamp lighting apparatus for lighting multiple discharge lamps
JP2008218333A (en) * 2007-03-07 2008-09-18 Matsushita Electric Works Ltd Discharge lamp lighting device and luminaire
JP2010067562A (en) * 2008-09-12 2010-03-25 Panasonic Electric Works Co Ltd Lighting unit, illuminator, liquid crystal display

Also Published As

Publication number Publication date
JP2011233266A (en) 2011-11-17
EP2381746A2 (en) 2011-10-26

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