EP0891123A1 - Dispositif pour alimenter des lampes à décharge, notamment pour véhicules automobiles - Google Patents

Dispositif pour alimenter des lampes à décharge, notamment pour véhicules automobiles Download PDF

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Publication number
EP0891123A1
EP0891123A1 EP98112781A EP98112781A EP0891123A1 EP 0891123 A1 EP0891123 A1 EP 0891123A1 EP 98112781 A EP98112781 A EP 98112781A EP 98112781 A EP98112781 A EP 98112781A EP 0891123 A1 EP0891123 A1 EP 0891123A1
Authority
EP
European Patent Office
Prior art keywords
lamp
ignitor
transformer
winding
filter means
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Withdrawn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
EP98112781A
Other languages
German (de)
English (en)
Inventor
Andrea Nepote
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.)
Marelli Europe SpA
Original Assignee
Magneti Marelli SpA
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 Magneti Marelli SpA filed Critical Magneti Marelli SpA
Publication of EP0891123A1 publication Critical patent/EP0891123A1/fr
Withdrawn legal-status Critical Current

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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
    • H05B41/02—Details
    • H05B41/04—Starting switches
    • H05B41/042—Starting switches using semiconductor devices
    • 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
    • H05B41/288—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 without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
    • H05B41/292—Arrangements for protecting lamps or circuits against abnormal operating conditions

Definitions

  • the present invention relates to a device for operating a gas-discharge lamp, particularly for use in motor-vehicle headlamps or lights.
  • control device comprising:
  • FIG. 1 A known device of this type is shown schematically in Figure 1 of the appended drawings.
  • the gas-discharge lamp is indicated L and the associated operating device comprises a ballast circuit B connected to an ignitor circuit I.
  • a filter F is interposed between the ignitor I and the lamp.
  • the filter F is a high-frequency filter with two inductors in series with the conductors which connect the ignitor to the lamp, and with two capacitors in parallel with these conductors.
  • the components of the filter F serve solely and exclusively for performing the filtering action which is directed towards limiting the emission of interference and all of these components are for operating at high voltages and are therefore quite expensive.
  • the object of the present invention is to provide a device for operating a gas-discharge lamp in which filtering to prevent interference radiation is achieved with a reduced number of additional components.
  • the filter means comprise, as the inductive component, the secondary winding of the transformer of the ignitor.
  • the secondary winding of the transformer comprises two winding portions and the filter means also comprise two capacitors connected between the opposite ends of these winding portions.
  • the ignitor I comprises a transformer T, particularly of the type known as a Tesla transformer.
  • the transformer T comprises a primary winding W1 connected to the ballast circuit B. In series with the primary winding W1 of the transformer T there is a discharge device SC.
  • the transformer T has a secondary winding comprising two winding portions W21 and W22.
  • the winding portion W21 has one end connected to the lamp L and the other end connected to one end of the winding portion W22 via a capacitor C1.
  • the other end of the winding portion W22 is connected to the lamp L.
  • a second capacitor C2 connected to the winding portions W21 and W22 in a manner such as to be substantially in parallel with the lamp L.
  • the transformer T with the secondary winding split into two portions and the ways in which these portions are connected to the capacitors C1 and C2 enable these winding portions to be used synergically both for applying the extra-high starting voltage to the lamp L, and as inductive components of a high-frequency filter for reducing the emission of interference.
  • the circuit formed by the capacitors C1, C2 and by the winding portions W21 and W22 corresponds to the circuit of the filter F according to the prior art.
  • a first structural solution may consist in the mounting of the entire ignitor I in the lamp-holder associated with the lamp.
  • At least the high-voltage capacitor C2 may be incorporated in the lamp-holder associated with the lamp L whilst the rest of the ignitor I may be formed as a structurally separate unit connected to the high-voltage capacitor C2 by means of a pair of insulated conductors.
  • the ignitor I and the associated filter capacitors may be physically incorporated in the base of the lamp.
  • Figure 3 shows a particularly advantageous embodiment of the transformer T.
  • the transformer T comprises a magnetic core MC on which the primary winding W1 is wound, this winding being formed, for example, by a single turn wound with a long pitch.
  • the two winding portions W21 and W22 which form the secondary side of the transformer are wound on top of one another on the core MC on top of the primary winding W1.
  • Each of these winding portions is advantageously constituted by a single layer of turns of conductive wire.
  • this stray capacitance is a capacitance in parallel and therefore also contributes to the filtering effect.

Landscapes

  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Filters And Equalizers (AREA)
EP98112781A 1997-07-11 1998-07-09 Dispositif pour alimenter des lampes à décharge, notamment pour véhicules automobiles Withdrawn EP0891123A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT97TO000628A IT1293443B1 (it) 1997-07-11 1997-07-11 Dispositivo di comando per una lampada a scarica di gas, particolarmente per autoveicoli.
ITTO970628 1997-07-11

Publications (1)

Publication Number Publication Date
EP0891123A1 true EP0891123A1 (fr) 1999-01-13

Family

ID=11415864

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98112781A Withdrawn EP0891123A1 (fr) 1997-07-11 1998-07-09 Dispositif pour alimenter des lampes à décharge, notamment pour véhicules automobiles

Country Status (2)

Country Link
EP (1) EP0891123A1 (fr)
IT (1) IT1293443B1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0933975A2 (fr) * 1998-01-31 1999-08-04 Hella KG Hueck & Co. Transformateur d' amorçage
EP0933977A2 (fr) * 1998-01-31 1999-08-04 Hella KG Hueck & Co. Dispositif d' amorçage et d' alimentation d' une lampe à décharge à haute pression dans un véhicule
WO2000069224A1 (fr) * 1999-05-07 2000-11-16 Koninklijke Philips Electronics N.V. Dispositif d'allumage pour lampes a decharge a haute intensite
EP1056315A2 (fr) * 1999-05-26 2000-11-29 Hella KG Hueck & Co. Circuit pour alimenter en courant alternatif des lampes à décharge haute pression dans un véhicule
EP1056314A2 (fr) * 1999-05-26 2000-11-29 Hella KG Hueck & Co. Circuit pour alimenter en courant alternatif des lampes à décharge pour un véhicule
EP1077590A2 (fr) * 1999-08-19 2001-02-21 VOGT electronic AG Module d' amorçage haute tension
WO2004043118A1 (fr) * 2002-11-04 2004-05-21 Koninklijke Philips Electronics N.V. Circuit survolteur d'impulsions d'allumage
WO2006026943A1 (fr) * 2004-08-31 2006-03-16 Patent-Treuhand- Gesellschaft Für Elektrische Glühlampen Mbh Procede pour faire fonctionner une lampe a decharge a haute pression, dispositif permettant de faire fonctionner une lampe a decharge a haute pression et lampe a decharge a haute pression pourvue d'un dispositif de ce type
WO2007138507A1 (fr) * 2006-05-31 2007-12-06 Koninklijke Philips Electronics N.V. Procédé et système pour faire fonctionner une lampe à décharge de gaz
EP1971192A3 (fr) * 2007-03-15 2012-06-27 Vossloh-Schwabe Deutschland GmbH Appareil de montage ayant une tolérance électromagnétique améliorée

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5055747A (en) * 1990-07-20 1991-10-08 Intent Patents A.G. Self-regulating, no load protected electronic ballast system
WO1992009183A1 (fr) * 1990-11-14 1992-05-29 Neon Dynamics Corporation Dispositif d'alimentation d'excitation a commutation pour tubes a decharge a gaz, notamment a argon-mercure
GB2276714A (en) * 1993-03-30 1994-10-05 Bosch Gmbh Robert Headlight for vehicles
DE19624724A1 (de) * 1995-06-29 1997-01-09 Valeo Vision Filtereinheit für einen Verbinder zu einer Entladungslampe, insbesondere in einem Kraftfahrzeugscheinwerfer, Baugruppe aus einem Verbinder und einer solchen Fitereinheit, und Scheinwerfer mit einer solchen Baugruppe
DE19645752A1 (de) * 1995-11-06 1997-05-15 Koito Mfg Co Ltd Entladungslampenbeleuchtungsvorrichtung
DE19610388A1 (de) * 1996-03-16 1997-09-18 Bosch Gmbh Robert Zündeinrichtung für eine Entladungslampe

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5055747A (en) * 1990-07-20 1991-10-08 Intent Patents A.G. Self-regulating, no load protected electronic ballast system
WO1992009183A1 (fr) * 1990-11-14 1992-05-29 Neon Dynamics Corporation Dispositif d'alimentation d'excitation a commutation pour tubes a decharge a gaz, notamment a argon-mercure
GB2276714A (en) * 1993-03-30 1994-10-05 Bosch Gmbh Robert Headlight for vehicles
DE19624724A1 (de) * 1995-06-29 1997-01-09 Valeo Vision Filtereinheit für einen Verbinder zu einer Entladungslampe, insbesondere in einem Kraftfahrzeugscheinwerfer, Baugruppe aus einem Verbinder und einer solchen Fitereinheit, und Scheinwerfer mit einer solchen Baugruppe
DE19645752A1 (de) * 1995-11-06 1997-05-15 Koito Mfg Co Ltd Entladungslampenbeleuchtungsvorrichtung
DE19610388A1 (de) * 1996-03-16 1997-09-18 Bosch Gmbh Robert Zündeinrichtung für eine Entladungslampe

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0933977A3 (fr) * 1998-01-31 2001-01-10 Hella KG Hueck & Co. Dispositif d' amorçage et d' alimentation d' une lampe à décharge à haute pression dans un véhicule
EP0933977A2 (fr) * 1998-01-31 1999-08-04 Hella KG Hueck & Co. Dispositif d' amorçage et d' alimentation d' une lampe à décharge à haute pression dans un véhicule
EP0933975A3 (fr) * 1998-01-31 2000-11-02 Hella KG Hueck & Co. Transformateur d' amorçage
EP0933975A2 (fr) * 1998-01-31 1999-08-04 Hella KG Hueck & Co. Transformateur d' amorçage
WO2000069224A1 (fr) * 1999-05-07 2000-11-16 Koninklijke Philips Electronics N.V. Dispositif d'allumage pour lampes a decharge a haute intensite
EP1056315A3 (fr) * 1999-05-26 2001-09-12 Hella KG Hueck & Co. Circuit pour alimenter en courant alternatif des lampes à décharge haute pression dans un véhicule
EP1056314A2 (fr) * 1999-05-26 2000-11-29 Hella KG Hueck & Co. Circuit pour alimenter en courant alternatif des lampes à décharge pour un véhicule
EP1056315A2 (fr) * 1999-05-26 2000-11-29 Hella KG Hueck & Co. Circuit pour alimenter en courant alternatif des lampes à décharge haute pression dans un véhicule
EP1056314A3 (fr) * 1999-05-26 2001-09-12 Hella KG Hueck & Co. Circuit pour alimenter en courant alternatif des lampes à décharge pour un véhicule
EP1077590A2 (fr) * 1999-08-19 2001-02-21 VOGT electronic AG Module d' amorçage haute tension
EP1077590A3 (fr) * 1999-08-19 2001-12-12 VOGT electronic AG Module d' amorçage haute tension
WO2004043118A1 (fr) * 2002-11-04 2004-05-21 Koninklijke Philips Electronics N.V. Circuit survolteur d'impulsions d'allumage
US7378803B2 (en) 2002-11-04 2008-05-27 Koninklijke Philips Electronics N. V. Igniting pulse booster circuit
CN1709014B (zh) * 2002-11-04 2011-07-06 皇家飞利浦电子股份有限公司 点火脉冲升压器电路
WO2006026943A1 (fr) * 2004-08-31 2006-03-16 Patent-Treuhand- Gesellschaft Für Elektrische Glühlampen Mbh Procede pour faire fonctionner une lampe a decharge a haute pression, dispositif permettant de faire fonctionner une lampe a decharge a haute pression et lampe a decharge a haute pression pourvue d'un dispositif de ce type
WO2007138507A1 (fr) * 2006-05-31 2007-12-06 Koninklijke Philips Electronics N.V. Procédé et système pour faire fonctionner une lampe à décharge de gaz
EP1971192A3 (fr) * 2007-03-15 2012-06-27 Vossloh-Schwabe Deutschland GmbH Appareil de montage ayant une tolérance électromagnétique améliorée

Also Published As

Publication number Publication date
IT1293443B1 (it) 1999-03-01
ITTO970628A1 (it) 1999-01-11

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