TW200726321A - Lighting device of fluorescent lamp - Google Patents
Lighting device of fluorescent lampInfo
- 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
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.
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)
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)
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)
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 |
-
2006
- 2006-11-09 WO PCT/JP2006/322389 patent/WO2007055289A1/en active Application Filing
- 2006-11-09 EP EP06832450A patent/EP1951006A4/en not_active Withdrawn
- 2006-11-09 JP JP2007544185A patent/JPWO2007055289A1/en not_active Withdrawn
- 2006-11-14 TW TW095142019A patent/TW200726321A/en unknown
Cited By (1)
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 |
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