EP0594880A1 - Procédé et circuit d'amorçage de lampes fluorescentes lorsque les électrodes de préchauffage ont atteint une température donnée - Google Patents

Procédé et circuit d'amorçage de lampes fluorescentes lorsque les électrodes de préchauffage ont atteint une température donnée Download PDF

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Publication number
EP0594880A1
EP0594880A1 EP92118404A EP92118404A EP0594880A1 EP 0594880 A1 EP0594880 A1 EP 0594880A1 EP 92118404 A EP92118404 A EP 92118404A EP 92118404 A EP92118404 A EP 92118404A EP 0594880 A1 EP0594880 A1 EP 0594880A1
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EP
European Patent Office
Prior art keywords
voltage
lamp
cathode
lamp cathode
resistance
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.)
Granted
Application number
EP92118404A
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German (de)
English (en)
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EP0594880B1 (fr
Inventor
Felix Tobler
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.)
Knobel AG Lichttechnische Komponenten
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Knobel AG Lichttechnische Komponenten
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 Knobel AG Lichttechnische Komponenten filed Critical Knobel AG Lichttechnische Komponenten
Priority to DE59209173T priority Critical patent/DE59209173D1/de
Priority to EP92118404A priority patent/EP0594880B1/fr
Priority to AT92118404T priority patent/ATE162922T1/de
Priority to US08/141,524 priority patent/US5455486A/en
Publication of EP0594880A1 publication Critical patent/EP0594880A1/fr
Application granted granted Critical
Publication of EP0594880B1 publication Critical patent/EP0594880B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • H05B41/02—Details
    • H05B41/04—Starting switches
    • H05B41/042—Starting switches using semiconductor devices
    • H05B41/044—Starting switches using semiconductor devices for lamp provided with pre-heating electrodes
    • H05B41/046—Starting switches using semiconductor devices for lamp provided with pre-heating electrodes using controlled semiconductor devices

Definitions

  • the invention relates to a method according to the preamble of claim 1 and to a circuit arrangement for performing the method.
  • the lamp cathodes are preheated before the ignition voltage is applied to the fluorescent lamp. This significantly extends the service life of fluorescent lamps compared to cold ignition. Circuit arrangements are known from EP-A-0 118 309 and DE-OS-32 02 445 in which the duration of the preheating of the lamp cathodes is fixed. If the duration of the preheating of the lamp cathodes is determined in this way, the different types of fluorescent lamps with different resistance values of the lamp cathodes are heated unevenly at the essentially constant preheating current. Because the optimal temperature of the lamp cathodes during ignition is between 600 and 700 ° C, it is practically not possible to set a preheating time that is optimal for all types of fluorescent lamps.
  • those fluorescent lamps with low-resistance lamp cathodes are underheated on the same ballast and the fluorescent lamps with high-resistance lamp cathodes are overheated, which leads to a shortening of the service life of the fluorescent lamps and to higher operating costs.
  • the object of the invention is therefore to provide a method for preheating and igniting fluorescent lamps, or a circuit arrangement for carrying out the method, with which an optimal duration of the preheating time which is independent of various resistance values of the lamp cathodes is achieved.
  • FIG. 1 shows a fluorescent lamp LL with its lamp cathodes LK1, LK2, a starter S and an inductor Ld in a circuit arrangement.
  • This known circuit arrangement corresponds to the inductive operation of the fluorescent lamp at mains frequency (50-60 Hz).
  • the switch S is an electronic starter, as described, for example, in the document EP-A-0 118 309. In the preheating phase of the lamp cathodes, this switch is closed and opened after a pre-set period of time. When the switch is opened, the current through the inductor Ld is interrupted and the fluorescent lamp LL is ignited by the voltage induced at the inductor Ld.
  • the duration of the preheating time for the preheating current thus given must be selected such that the fluorescent lamps with the lowest-resistance cathode can also be ignited.
  • the fluorescent lamps with high-resistance lamp cathodes are operated for too long with this preheating current, which unnecessarily overheats such fluorescent lamps and shortens their service life.
  • FIG. 2 schematically shows a fluorescent lamp LL with a series resonance circuit with a coupling capacitor Ck, a resonance choke Lr and a resonance capacitor Cr.
  • This series resonance circuit is used in electronic ballasts in which the fluorescent lamp is operated at a higher frequency (20-90 kHz). In preheating mode, the frequency is changed in relation to the resonance frequency of the resonance circuit in such a way that the voltage across the resonance capacitor and thus above the fluorescent lamp does not cause the fluorescent lamp to ignite, and an essentially constant current flows through the lamp cathodes LK1 and LK2 and preheats them in this way.
  • FIG. 3 shows the time profiles of the lamp cathode voltages V k of a low-resistance lamp cathode V KN and a high-resistance lamp cathode V KH when both lamp cathodes are essentially connected same preheating current and preheated for the same period of time.
  • the preheating current is switched on and the lamp cathode voltage V k is directly proportional to the resistance of the cold lamp cathodes.
  • the heating power P H currently delivered to the lamp cathodes is equal to the product of the preheating current in second power and the resistance of the lamp cathode.
  • the cathode temperature of the lamp is now determined before the ignition.
  • the lamp cathodes are made of tungsten wire with a temperature coefficient of 0.5% / K. From the measurement of the lamp cathode voltage V k , the temperature of the lamp cathode can be deduced directly if the voltage of the cold lamp cathode is known.
  • FIG. 4 shows the time profiles of the lamp cathode voltages in an advantageous case according to the invention.
  • the duration of the preheating time is determined so that a preselected temperature of the lamp cathode is reached. Is this temperature e.g. 600 ° C, the ratio of the resistance of the hot lamp cathode to the resistance of the cold lamp cathode is approximately 3.
  • the ignition of the lamp can therefore be initiated if the resistance of the hot cathode determined is three times the previously determined resistance of the cold cathode .
  • FIG. 5 shows an exemplary embodiment of a circuit arrangement which enables the method according to the invention to be carried out.
  • the lamp cathode voltage V k is rectified and its peak value is measured on a capacitor C1.
  • the peak The first half-wave which corresponds to the voltage across the cold lamp cathode or the resistance of the cold cathode, is stored in a capacitor C2 using a sample and hold circuit SH.
  • the peak value of the current lamp cathode voltage increases continuously.
  • the duration of the preheating phase is determined so that the lamp cathodes are always brought to the same temperature.
  • V Kheiss / V Cold (R2 + R3) / R3
  • R2 2R3 reached, or if the lamp cathode voltage is tripled in the preheating phase.
  • the duration of the preheating phase is preferably additionally limited to a maximum value (e.g. 2 seconds) if, for various reasons, e.g. too low preheating current or already hot cathodes after a brief power failure, the preselected ratio V Kheiss / V Kkalt is not possible.
  • FIG. 6 shows another circuit arrangement with which the method according to the invention can also be carried out.
  • the peak value of the lamp cathode voltage is measured with the aid of an A / D converter AD and the measured values are forwarded to a microprocessor MP.
  • a microprocessor MP By numerically comparing the value measured first at the beginning of the preheating phase and the current value of the lamp cathode voltage, it is possible to end the preheating phase when the preselected ratio V Kheiss / V Kkalt is reached and to apply the ignition voltage to precisely preheated lamp cathodes .
  • FIG. 7 shows a further circuit arrangement with several fluorescent lamps. If there are several fluorescent lamps, it may be advantageous to measure a plurality of lamp cathode voltages in series in order to measure the average temperature of the lamp cathodes.
  • the main purpose of the method according to the invention is to achieve an optimal duration of the preheating time that is precisely matched to the temperature of the lamp cathodes.
  • a method is created in which the service life of the fluorescent lamps can be optimally used regardless of the type of fluorescent lamp. Only with precise preheating of the lamp cathodes can high switching numbers and the longest possible service life of the fluorescent lamps be achieved.

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  • Circuit Arrangements For Discharge Lamps (AREA)
EP92118404A 1992-10-28 1992-10-28 Procédé et circuit d'amorçage de lampes fluorescentes lorsque les électrodes de préchauffage ont atteint une température donnée Expired - Lifetime EP0594880B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE59209173T DE59209173D1 (de) 1992-10-28 1992-10-28 Verfahren und Schaltungsanordnung zum Zünden von Leuchtstofflampen bei vorbestimmter Temperatur der Lampenkathoden
EP92118404A EP0594880B1 (fr) 1992-10-28 1992-10-28 Procédé et circuit d'amorçage de lampes fluorescentes lorsque les électrodes de préchauffage ont atteint une température donnée
AT92118404T ATE162922T1 (de) 1992-10-28 1992-10-28 Verfahren und schaltungsanordnung zum zünden von leuchtstofflampen bei vorbestimmter temperatur der lampenkathoden
US08/141,524 US5455486A (en) 1992-10-28 1993-10-27 Method and circuitry for igniting fluorescent lamps at a predetermined temperature of their cathodes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92118404A EP0594880B1 (fr) 1992-10-28 1992-10-28 Procédé et circuit d'amorçage de lampes fluorescentes lorsque les électrodes de préchauffage ont atteint une température donnée

Publications (2)

Publication Number Publication Date
EP0594880A1 true EP0594880A1 (fr) 1994-05-04
EP0594880B1 EP0594880B1 (fr) 1998-01-28

Family

ID=8210179

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92118404A Expired - Lifetime EP0594880B1 (fr) 1992-10-28 1992-10-28 Procédé et circuit d'amorçage de lampes fluorescentes lorsque les électrodes de préchauffage ont atteint une température donnée

Country Status (4)

Country Link
US (1) US5455486A (fr)
EP (1) EP0594880B1 (fr)
AT (1) ATE162922T1 (fr)
DE (1) DE59209173D1 (fr)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995010168A1 (fr) * 1993-10-01 1995-04-13 C.M. Personnel Participation B.V. Ballast electronique pour lampe a gaz a decharge
EP0707438A2 (fr) 1994-10-13 1996-04-17 Tridonic Bauelemente GmbH Ballast pour au moins une lampe à décharge
EP0759686A2 (fr) * 1995-08-18 1997-02-26 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Procédé et circuit pour commander une lampe
WO1997011584A1 (fr) * 1995-09-20 1997-03-27 Robert Bosch Gmbh Circuit pour la mise en service et le fonctionnement d'une lampe a decharge a haute pression fonctionnant par un courant c.a commande
EP0845928A1 (fr) * 1996-11-29 1998-06-03 Toshiba Lighting & Technology Corporation Ballast pour lampes à décharge avec filaments de préchauffage
EP0889675A1 (fr) * 1997-07-02 1999-01-07 MAGNETEK S.p.A. Ballast électronique avec reconnaissance du type de lampe
WO1999034648A1 (de) * 1997-12-23 1999-07-08 Tridonic Bauelemente Gmbh Elektronisches vorschaltgerät
EP0930808A2 (fr) * 1998-01-16 1999-07-21 Sanken Electric Co., Ltd. Système pour préchauffer par incréments et pour alimenter une lampe à décharge
AT406627B (de) * 1998-06-26 2000-07-25 Hermann Hans Ing Schaltung für gasentladungslampen
WO2000072641A1 (fr) * 1999-05-19 2000-11-30 Koninklijke Philips Electronics N.V. Agencement de circuit
DE19956391A1 (de) * 1999-11-24 2001-05-31 Nobile Ag Verfahren und Vorschaltgerät zum Starten und Betreiben einer Leuchtstofflampe
EP1672963A2 (fr) * 2004-12-20 2006-06-21 Toshiba Lighting & Technology Corporation Ballast pour lampe à décharge et système d' éclairage
WO2006106446A2 (fr) * 2005-04-04 2006-10-12 Koninklijke Philips Electronics N.V. Procede pour regulation de la duree de vie d'une lampe a decharge gazeuse, circuit de commande de lampe a decharge gazeuse, lampe a decharge gazeuse et ensemble comprenant une lampe a decharge gazeuse et un circuit de commande de lampe
WO2007025983A1 (fr) * 2005-08-31 2007-03-08 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Ballast pour une lampe a decharge a prechauffage adaptatif
WO2007025976A1 (fr) * 2005-08-31 2007-03-08 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Ballast pour une lampe a decharge a prechauffage adaptatif
EP1841294A2 (fr) * 2006-03-27 2007-10-03 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Ballast électronique pour lampes fluorescentes
EP1945008A1 (fr) * 2002-02-18 2008-07-16 TridonicAtco GmbH & Co. KG Capteur de lampes pour un appareil de montage destiné au fonctionnement d'une lampe à décharge
DE19501695B4 (de) * 1994-10-13 2008-10-02 Tridonicatco Gmbh & Co. Kg Vorschaltgerät für mindestens eine Gasentladungslampe mit vorheizbaren Lampenwendeln

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2726426B1 (fr) * 1994-10-28 1996-11-29 Sgs Thomson Microelectronics Starter electronique pour lampe fluorescente
US5696609A (en) * 1995-06-29 1997-12-09 Agfa Division, Bayer Corporation Illumination system for a flat-bed scanning system
US5973455A (en) * 1998-05-15 1999-10-26 Energy Savings, Inc. Electronic ballast with filament cut-out
US6359387B1 (en) * 2000-08-31 2002-03-19 Philips Electronics North America Corporation Gas-discharge lamp type recognition based on built-in lamp electrical properties
EP2050317A1 (fr) * 2006-07-31 2009-04-22 Koninklijke Philips Electronics N.V. Procédé et circuit de chauffage d'une électrode de lampe à décharge
CN102598873B (zh) 2009-09-18 2015-11-25 皇家飞利浦电子股份有限公司 带有调光电路的电子镇流器

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3508431A1 (de) * 1985-03-09 1986-09-11 Kreutzer, Otto, 7750 Konstanz Schalteinrichtung zur schonenden zuendung von warmkathoden-leuchtstofflampen gespeist ueber einen transistorwechselrichter mit streufeldtransformator aus einer gleichstromquelle
EP0471332A1 (fr) * 1990-08-16 1992-02-19 DIEHL GMBH & CO. Assemblage de circuit pour le fonctionnement d'une lampe fluorescente

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3720861A (en) * 1970-12-21 1973-03-13 Teletype Corp Fluorescent lamp igniting circuit
DE3202445A1 (de) * 1982-01-26 1983-08-04 Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen Schaltungsanordnung zur speisung einer leuchtstoffroehre
GB8305878D0 (en) * 1983-03-03 1983-04-07 Texas Instruments Ltd Starter circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3508431A1 (de) * 1985-03-09 1986-09-11 Kreutzer, Otto, 7750 Konstanz Schalteinrichtung zur schonenden zuendung von warmkathoden-leuchtstofflampen gespeist ueber einen transistorwechselrichter mit streufeldtransformator aus einer gleichstromquelle
EP0471332A1 (fr) * 1990-08-16 1992-02-19 DIEHL GMBH & CO. Assemblage de circuit pour le fonctionnement d'une lampe fluorescente

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995010168A1 (fr) * 1993-10-01 1995-04-13 C.M. Personnel Participation B.V. Ballast electronique pour lampe a gaz a decharge
EP0707438A2 (fr) 1994-10-13 1996-04-17 Tridonic Bauelemente GmbH Ballast pour au moins une lampe à décharge
US5656891A (en) * 1994-10-13 1997-08-12 Tridonic Bauelemente Gmbh Gas discharge lamp ballast with heating control circuit and method of operating same
DE19501695B4 (de) * 1994-10-13 2008-10-02 Tridonicatco Gmbh & Co. Kg Vorschaltgerät für mindestens eine Gasentladungslampe mit vorheizbaren Lampenwendeln
EP0759686A2 (fr) * 1995-08-18 1997-02-26 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Procédé et circuit pour commander une lampe
EP0759686A3 (fr) * 1995-08-18 1997-12-29 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Procédé et circuit pour commander une lampe
WO1997011584A1 (fr) * 1995-09-20 1997-03-27 Robert Bosch Gmbh Circuit pour la mise en service et le fonctionnement d'une lampe a decharge a haute pression fonctionnant par un courant c.a commande
EP0845928A1 (fr) * 1996-11-29 1998-06-03 Toshiba Lighting & Technology Corporation Ballast pour lampes à décharge avec filaments de préchauffage
US5939836A (en) * 1996-11-29 1999-08-17 Toshiba Lighting & Technology Corp. Discharge lamp lighting apparatus and lighting apparatus
US6081077A (en) * 1997-07-02 2000-06-27 Magnetek Universal power supply for discharge lamps
EP0889675A1 (fr) * 1997-07-02 1999-01-07 MAGNETEK S.p.A. Ballast électronique avec reconnaissance du type de lampe
WO1999034648A1 (de) * 1997-12-23 1999-07-08 Tridonic Bauelemente Gmbh Elektronisches vorschaltgerät
EP0930808A2 (fr) * 1998-01-16 1999-07-21 Sanken Electric Co., Ltd. Système pour préchauffer par incréments et pour alimenter une lampe à décharge
EP0930808A3 (fr) * 1998-01-16 1999-08-18 Sanken Electric Co., Ltd. Système pour préchauffer par incréments et pour alimenter une lampe à décharge
AT406627B (de) * 1998-06-26 2000-07-25 Hermann Hans Ing Schaltung für gasentladungslampen
WO2000072641A1 (fr) * 1999-05-19 2000-11-30 Koninklijke Philips Electronics N.V. Agencement de circuit
CN1316856C (zh) * 1999-05-19 2007-05-16 皇家菲利浦电子有限公司 电路装置
DE19956391A1 (de) * 1999-11-24 2001-05-31 Nobile Ag Verfahren und Vorschaltgerät zum Starten und Betreiben einer Leuchtstofflampe
EP1945008A1 (fr) * 2002-02-18 2008-07-16 TridonicAtco GmbH & Co. KG Capteur de lampes pour un appareil de montage destiné au fonctionnement d'une lampe à décharge
EP1672963A2 (fr) * 2004-12-20 2006-06-21 Toshiba Lighting & Technology Corporation Ballast pour lampe à décharge et système d' éclairage
EP1672963A3 (fr) * 2004-12-20 2010-04-07 Toshiba Lighting & Technology Corporation Ballast pour lampe à décharge et système d' éclairage
WO2006106446A2 (fr) * 2005-04-04 2006-10-12 Koninklijke Philips Electronics N.V. Procede pour regulation de la duree de vie d'une lampe a decharge gazeuse, circuit de commande de lampe a decharge gazeuse, lampe a decharge gazeuse et ensemble comprenant une lampe a decharge gazeuse et un circuit de commande de lampe
WO2006106446A3 (fr) * 2005-04-04 2007-02-22 Koninkl Philips Electronics Nv Procede pour regulation de la duree de vie d'une lampe a decharge gazeuse, circuit de commande de lampe a decharge gazeuse, lampe a decharge gazeuse et ensemble comprenant une lampe a decharge gazeuse et un circuit de commande de lampe
WO2007025983A1 (fr) * 2005-08-31 2007-03-08 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Ballast pour une lampe a decharge a prechauffage adaptatif
WO2007025976A1 (fr) * 2005-08-31 2007-03-08 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Ballast pour une lampe a decharge a prechauffage adaptatif
US8134297B2 (en) 2005-08-31 2012-03-13 Osram Ag Ballast for a discharge lamp with adaptive preheating
EP1841294A2 (fr) * 2006-03-27 2007-10-03 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Ballast électronique pour lampes fluorescentes
EP1841294A3 (fr) * 2006-03-27 2011-05-25 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Ballast électronique pour lampes fluorescentes

Also Published As

Publication number Publication date
EP0594880B1 (fr) 1998-01-28
DE59209173D1 (de) 1998-03-05
ATE162922T1 (de) 1998-02-15
US5455486A (en) 1995-10-03

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