KR20000030108A - Discharge lamp lighting equipment and illuminating system - Google Patents

Discharge lamp lighting equipment and illuminating system Download PDF

Info

Publication number
KR20000030108A
KR20000030108A KR1019980708506A KR19987008506A KR20000030108A KR 20000030108 A KR20000030108 A KR 20000030108A KR 1019980708506 A KR1019980708506 A KR 1019980708506A KR 19987008506 A KR19987008506 A KR 19987008506A KR 20000030108 A KR20000030108 A KR 20000030108A
Authority
KR
South Korea
Prior art keywords
capacitor
filaments
discharge lamp
fluorescent lamp
inverter circuit
Prior art date
Application number
KR1019980708506A
Other languages
Korean (ko)
Inventor
Noriyuki Kitamura
Keiji Takahashi
Junji Hasegawa
Kouji Takahashi
Original Assignee
Toshiba Lighting & Technology
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
Priority claimed from JP4655597A external-priority patent/JP3788487B2/en
Priority claimed from JP9081523A external-priority patent/JPH10284277A/en
Application filed by Toshiba Lighting & Technology filed Critical Toshiba Lighting & Technology
Publication of KR20000030108A publication Critical patent/KR20000030108A/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
    • H05B41/26—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
    • 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

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

PURPOSE: A discharge lamp lighting equipment and illumination system is provided to preheat a discharge lamp with a simply structure, and to reduce the red light of a filament to be caught. CONSTITUTION: DC current of a source of DC(E) is inverted to high-frequency waves by means of an inverter circuit(11) to preheat filaments(FL1a, FL1b). Under this condition, a discharge detecting circuit(12) does not form a closed circuit for DC, and therefore a DC component is not applied to a capacitor(C3) and the capacitor(C3) is not charged. When a fluorescent lamp(FL1) discharges and then lights up, a DC component is applied to the capacitor(C3). When the voltage of the capacitor C3 becomes higher than that of the reference power supply(E1), it is judged that the fluorescent lamp(FL1) has discharged and lighted up. When the discharging is detected under the condition that preheating is necessary, the output of the inverter circuit(11) is lowered by negative feedback and the filaments(FL1a, FL1b) are preheated again while they are kept in a glow discharging state. When the filaments are sufficiently preheated, the voltage of the reference power supply(E1) is increased by a timer or other method to increase the output of the inverter circuit(11) and then start up the fluorescent lamp(FL1) to be lighted up.
KR1019980708506A 1997-02-28 1998-10-23 Discharge lamp lighting equipment and illuminating system KR20000030108A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP4655597A JP3788487B2 (en) 1997-02-28 1997-02-28 Discharge lamp lighting device and lighting device
JP9081523A JPH10284277A (en) 1997-03-31 1997-03-31 Discharge lamp lighting device and illumination system

Publications (1)

Publication Number Publication Date
KR20000030108A true KR20000030108A (en) 2000-06-05

Family

ID=26386647

Family Applications (2)

Application Number Title Priority Date Filing Date
KR1019980708506A KR100334657B1 (en) 1997-02-28 1998-02-27 Discharge lamp and lighting device
KR1019980708506A KR20000030108A (en) 1997-02-28 1998-10-23 Discharge lamp lighting equipment and illuminating system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
KR1019980708506A KR100334657B1 (en) 1997-02-28 1998-02-27 Discharge lamp and lighting device

Country Status (3)

Country Link
EP (1) EP0901315A4 (en)
KR (2) KR100334657B1 (en)
WO (1) WO1998038840A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8084949B2 (en) * 2009-07-09 2011-12-27 General Electric Company Fluorescent ballast with inherent end-of-life protection

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2049318A (en) * 1980-04-11 1980-12-17 Gen Electric Voltage doubler starting circuit for arc lamp
EP0119584B1 (en) * 1983-03-14 1989-01-18 Mitsubishi Denki Kabushiki Kaisha Lighting circuit for electric discharge lamp
JPS62200688A (en) * 1986-02-27 1987-09-04 松下電工株式会社 Discharge lamp burner
JP2698597B2 (en) * 1988-03-31 1998-01-19 東芝ライテック株式会社 Inverter device
JPH01289097A (en) * 1988-05-14 1989-11-21 Matsushita Electric Works Ltd Electric discharge lamp lighting device
JP2697881B2 (en) * 1988-12-23 1998-01-14 松下電工株式会社 Discharge lamp lighting device
US4914558A (en) * 1989-03-06 1990-04-03 Jon Flickinger Series resonant inverter and method of lamp starting
JPH0353798U (en) * 1989-09-26 1991-05-24
JP2706544B2 (en) * 1990-01-25 1998-01-28 株式会社テック Ballast for electronic discharge lamp
JP3211245B2 (en) * 1990-09-17 2001-09-25 東芝ライテック株式会社 Discharge lamp lighting device
JPH04141993A (en) * 1990-09-29 1992-05-15 Toshiba Lighting & Technol Corp Discharge lamp lighting device
JPH0574588A (en) * 1991-09-11 1993-03-26 Tokyo Electric Co Ltd Discharge lamp lighting device
JPH05121184A (en) * 1991-10-28 1993-05-18 Matsushita Electric Works Ltd Discharge lamp lighting device
JPH05144583A (en) * 1991-11-26 1993-06-11 Matsushita Electric Works Ltd Discharge lamp lighting device
US5363020A (en) * 1993-02-05 1994-11-08 Systems And Service International, Inc. Electronic power controller
JPH06288917A (en) * 1993-03-31 1994-10-18 Nohmi Bosai Ltd Smoke detection type fire sensor
JPH0765970A (en) * 1993-08-26 1995-03-10 Matsushita Electric Works Ltd Discharge lamp lighting device
ATE194749T1 (en) * 1994-04-15 2000-07-15 Knobel Lichttech BALLAST WITH LAMP CHANGE DETECTION FOR DISCHARGE LAMPS
JPH0817583A (en) * 1994-07-01 1996-01-19 Matsushita Electric Ind Co Ltd Electric discharge lamp lighting device
KR0169164B1 (en) * 1995-08-21 1999-04-15 이청우 Rapid start type fluorescent lamp starting circuit

Also Published As

Publication number Publication date
KR100334657B1 (en) 2002-09-05
EP0901315A1 (en) 1999-03-10
EP0901315A4 (en) 2001-01-31
WO1998038840A1 (en) 1998-09-03
KR20000064992A (en) 2000-11-06

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