TW200726321A - Lighting device of fluorescent lamp - Google Patents

Lighting device of fluorescent lamp

Info

Publication number
TW200726321A
TW200726321A TW095142019A TW95142019A TW200726321A TW 200726321 A TW200726321 A TW 200726321A TW 095142019 A TW095142019 A TW 095142019A TW 95142019 A TW95142019 A TW 95142019A TW 200726321 A TW200726321 A TW 200726321A
Authority
TW
Taiwan
Prior art keywords
fluorescent lamp
polarity switching
lighting device
fluorescent lamps
khz
Prior art date
Application number
TW095142019A
Other languages
Chinese (zh)
Inventor
Guo-Hua Wang
Original Assignee
Nitta Corp
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 Nitta Corp filed Critical Nitta Corp
Publication of TW200726321A publication Critical patent/TW200726321A/en

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
    • H05B41/24—Circuit arrangements in which the lamp is fed by high frequency ac, or with separate oscillator frequency
    • H05B41/245—Circuit arrangements in which the lamp is fed by high frequency ac, or with separate oscillator frequency for a plurality of lamps
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Dc-Dc Converters (AREA)

Abstract

Provided is a lighting device of fluorescent lamp, which including a polarity switching circuit 5 performing a polarity switching of a current input with a low frequency (f) equal to or lower than 20 kHz, a plurality of fluorescent lamps 71, ..., 7n connected to an output line of the polarity switching circuit 5, and a current-equalizing circuit 6 for equalizing currents flowing in each fluorescent lamps 71, ...., 7n and consisting of constant current circuits 61, ..., 6n containing transistors. Because the fluorescent lamp is lighted with a low frequency (f) equal to or lower than 20 kHz, influence of floating capacitance is difficult to be caused, and hence the fluorescent lamps 71, ...., 7n can be provided near a chassis of a display device, and wirings can be made long.
TW095142019A 2005-11-14 2006-11-14 Lighting device of fluorescent lamp TW200726321A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005328981 2005-11-14
JP2006276501 2006-10-10

Publications (1)

Publication Number Publication Date
TW200726321A true TW200726321A (en) 2007-07-01

Family

ID=38023289

Family Applications (1)

Application Number Title Priority Date Filing Date
TW095142019A TW200726321A (en) 2005-11-14 2006-11-14 Lighting device of fluorescent lamp

Country Status (4)

Country Link
EP (1) EP1951006A4 (en)
JP (1) JPWO2007055289A1 (en)
TW (1) TW200726321A (en)
WO (1) WO2007055289A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI488417B (en) * 2011-11-29 2015-06-11 Chung Ming Young A non-isolated single-phase multilevel inverter for renewable energy system applications

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7893628B2 (en) * 2006-11-22 2011-02-22 Minebea Co., Ltd. Electronic circuit for operating a plurality of gas discharge lamps at a common voltage source
DE102008005792B4 (en) 2008-01-23 2010-04-08 Minebea Co., Ltd. Electronic circuit and method for operating a plurality of gas discharge lamps at a common voltage source

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02288197A (en) * 1989-04-28 1990-11-28 Shinwa Giken:Kk Discharge lamp lighting device
JPH0473894A (en) * 1990-07-16 1992-03-09 Hitachi Lighting Ltd Discharge lamp lighting circuit
JP3180372B2 (en) * 1991-06-28 2001-06-25 松下電器産業株式会社 Discharge lamp lighting device and discharge lamp starting lighting method
JP2001345196A (en) * 2000-03-31 2001-12-14 Mitsubishi Electric Corp Discharge lamp lighting device
US6420839B1 (en) * 2001-01-19 2002-07-16 Ambit Microsystems Corp. Power supply system for multiple loads and driving system for multiple lamps
TWI277371B (en) * 2002-06-26 2007-03-21 Darfon Electronics Corp Inverter for driving multiple discharge lamps
JP2004071226A (en) * 2002-08-02 2004-03-04 Hitachi Media Electoronics Co Ltd Constant current feed control system and shunt balancing circuit
MXPA05008423A (en) * 2003-02-06 2006-03-17 Ceyx Technologies Inc Digital control system for lcd backlights.
WO2005048659A2 (en) * 2003-11-06 2005-05-26 Ceyx Technologies, Inc. Method and apparatus for optimizing power efficiency in light emitting device arrays

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI488417B (en) * 2011-11-29 2015-06-11 Chung Ming Young A non-isolated single-phase multilevel inverter for renewable energy system applications

Also Published As

Publication number Publication date
EP1951006A1 (en) 2008-07-30
JPWO2007055289A1 (en) 2009-04-30
EP1951006A4 (en) 2011-03-02
WO2007055289A1 (en) 2007-05-18

Similar Documents

Publication Publication Date Title
CN102214432B (en) Power management and control module and liquid crystal display
TW200638329A (en) Signal line drive circuit, light emitting device, and its drive method
EP1771049A3 (en) Solar simulator and method for driving the same
TW200729124A (en) Solid state lighting panels with variable voltage boost current sources
WO2012057927A3 (en) Lighting system electronic ballast or driver with shunt circuit for lighting control quiescent current
TW200641597A (en) A method and apparatus for controlling a voltage level
WO2006078325A3 (en) Circuit for use with switched leg power supply
TW200726321A (en) Lighting device of fluorescent lamp
ATE382530T1 (en) ELECTRICAL CIRCUIT FOR LED SIGNAL LAMPS WITH A SWITCHING THRESHOLD FOR SWITCHING BETWEEN DAY AND NIGHT OPERATION
CN102325401A (en) LED driving device, lamp strip and backlight device
TW200718017A (en) A slicer with large input common mode range
TW200520386A (en) Input stage for mixed-voltage-tolerant buffer without leakage issue
CN102958240A (en) light source device and dimming control circuit thereof
CN107635322A (en) A kind of Dimmable LED constant-current drive circuit
ATE485704T1 (en) CIRCUIT ARRANGEMENT AND METHOD FOR OPERATING A HIGH-PRESSURE DISCHARGE LAMP
Seo et al. Multi-string AC-powered LED driver with current regulation reduction based on simple circuitry
TW200728853A (en) Flat panel display and backlight module thereof
CN108966441A (en) A kind of light of stage music control system
ATE554637T1 (en) ELECTRONIC POWER SUPPLY FOR DISCHARGE LAMPS, LIGHTING SYSTEM AND LIGHTING METHOD FOR DISCHARGE LAMPS
CN205657898U (en) Light -operated CCFL lamp
ATE441311T1 (en) LIGHTING SYSTEM
TW200742916A (en) Structure and method of Quasi-U lamp for improving current uniformity of the backlight module
TWI263839B (en) Backlight module and display device
CN201081156Y (en) Cold light source wall-hung induction lamp house with information display function
CN201014261Y (en) Wall hanging type neon lamp box