EP0769240A1 - Systeme d'allumage pour lampes a decharge gazeuse, notamment pour feux d'automobiles - Google Patents

Systeme d'allumage pour lampes a decharge gazeuse, notamment pour feux d'automobiles

Info

Publication number
EP0769240A1
EP0769240A1 EP95922416A EP95922416A EP0769240A1 EP 0769240 A1 EP0769240 A1 EP 0769240A1 EP 95922416 A EP95922416 A EP 95922416A EP 95922416 A EP95922416 A EP 95922416A EP 0769240 A1 EP0769240 A1 EP 0769240A1
Authority
EP
European Patent Office
Prior art keywords
voltage
transformer
ignition device
capacitor
inductive
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Withdrawn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
EP95922416A
Other languages
German (de)
English (en)
Inventor
Dieter Betz
Ulrich Drews
Thomas Gross
Bernd Rothfuss
Thomas Kienzler
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0769240A1 publication Critical patent/EP0769240A1/fr
Withdrawn legal-status Critical Current

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
    • H05B41/02—Details
    • H05B41/04—Starting switches
    • 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
    • H05B41/16—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies
    • H05B41/18—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having a starting switch
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S315/00—Electric lamp and discharge devices: systems
    • Y10S315/02—High frequency starting operation for fluorescent lamp

Definitions

  • Ignition device for gas discharge lamps in particular for motor vehicle lights
  • the invention relates to an ignition device for gas discharge lamps, in particular for motor vehicle lights, according to the main claim.
  • Ignition devices or ignition circuits which generate the necessary high ignition voltage are required to switch on gas discharge lamps.
  • Such ignition devices are known, for example, from “La ps and Lighting", Third Edition 1983, Edward Arnold, pp. 292, 293
  • An ignition device having two transformers is described there, the DC supply voltage being converted by an arrangement with controllable switches into a clocked voltage for feeding the primary winding of the first transformer.
  • a problem here is the susceptibility to faults and the size, since Rough operation of the motor vehicle, components and assemblies that are not susceptible to faults and require little space are required.
  • the ignition device according to the invention with the characterizing features of the main claim has the advantage that the spark gap used is very reliable with a long service life and is also suitable for higher temperatures - in contrast to semiconductor switches. A special control circuit is not necessary.
  • the DC supply voltage is applied to the series connection of this capacitor with a charging resistor in a simple and cost-effective manner.
  • a smoothing capacitor is expediently connected between the terminals for the DC supply voltage.
  • At least one further voltage boost stage is advantageously connected downstream of the secondary winding of the first transformer.
  • the secondary winding of the first transformer is designed to charge a further capacitor which, in the further voltage boost stage, forms a circuit together with a switch and the primary winding of a second transformer, the secondary winding of this second transformer providing the increased voltage poses.
  • This switch is also expediently designed as a further spark gap which breaks through from a predetermined charge state of the further capacitor.
  • the capacitor is part of an additional voltage multiplication stage.
  • the capacitor preferably forms a voltage together with two diodes. doubling stage. At the same time, these diodes serve to generate the DC charging voltage for the further capacitor.
  • This arrangement can also be used advantageously in ignition devices in which the primary alternating voltage for the first transformer is generated in a different way.
  • the discharge current through the lamp is limited during the takeover by a current limiting device, preferably by an inductor.
  • At least two of the inductive components are combined in an inductive unit, in particular in that these components are inserted into a plastic housing that is open on one side and then potted with a potting compound filling the plastic housing.
  • an output-side high-voltage connection can be led out on one side of the structural unit and the other connections with a lower voltage applied on an opposite side of the structural unit.
  • Such an inductive component can also be used advantageously for other purposes in which several inductive components are provided.
  • the ignition device shown in the single figure is designed as a structural unit 10, which can be, for example, a housing or a casting block.
  • the circuit of the ignition device contained in the structural unit 10 has two direct voltage supply connections 11, 12, between which a smoothing capacitor 13 is connected.
  • a DC voltage of 330 volts at the supply connections 11, 12, which are generated by an upstream control device, not shown.
  • the series connection of a capacitor 14 with a charging resistor 15 is connected in parallel with the smoothing capacitor 13, the series connection of a first spark gap 16 with the primary winding of a first transformer 17 being connected in parallel with the capacitor 14.
  • the capacitor 14 forms, together with the charging resistor 15 and the first spark gap 16, a pulsed voltage or alternating voltage for operating the first transformer 17.
  • the secondary winding of the first transformer 17 connected to the positive supply connection 11 is connected with its second connection via a smoothing capacitor 18 to a rectifier and voltage doubler stage, which consists of two diodes 19, 20 and a further capacitor 21.
  • the anode of the diode 19 and a connection of the capacitor 21 are connected to the positive supply connection 11, and the cathode of the diode 19 is connected to the junction between the smoothing capacitor 18 and the anode of the other diode 20, the cathode of which the second terminal of the capacitor 21 is connected.
  • the capacitor 21 forms, together with a second spark gap 22 and the primary winding of a second transformer 23, a closed circuit.
  • the at the connection point between the primary winding and the second spark gap Ke 22 connected secondary winding of the second transformer 23 is connected with its second connection via an inductor 24 or choke to a first output connection 25.
  • a second output terminal 26 is connected to the negative supply terminal 12.
  • a gas discharge lamp 27 can be connected between the two output connections 25, 26. This is shown by dashed lines.
  • the two transformers 17, 23 and the inductance 24 are again combined within the assembly 10 in one assembly 28.
  • the capacitor 14 By applying a direct voltage to the supply connections 11, 12, the capacitor 14 is charged via the charging resistor 15. When the switching voltage of the first spark gap 16 is reached, the latter breaks through, and the capacitor 14 discharges via the primary winding of the first transformer 17. A new charging process then begins. As a result, the DC voltage is clocked and a special AC voltage arises in connection with the inductance of the first transformer 17.
  • the capacitor voltage of the capacitor 21 now reaches the switching voltage of the second spark gap 22, which is significantly higher than that of the first spark gap 16, the latter breaks down and the capacitor 21 discharges via the pri- The secondary winding of the second transformer 23.
  • an even higher secondary voltage is generated on the secondary side of the second transformer 23 and is supplied to the gas discharge lamp 27 as the ignition voltage.
  • the inductance 24 limits the discharge current through the gas discharge lamp 27.
  • the rectifier and voltage doubler stage and the second transformer 23 could be dispensed with, i. that is, the secondary winding of the first transformer 17 would then be connected to the output or the inductance 24.
  • rectifier and voltage doubler stage in connection with the two transformers 17 and 23 also for ignition devices for gas discharge lamps in which the input-side conversion of direct voltage into a clocked or alternating voltage takes place in a manner other than this is described in the exemplary embodiment.
  • a plastic housing which is only shown schematically by dash-dotted lines and has an open side, is used to form the structural unit 28.
  • the two transformers 17 and 23 and the inductor 24 are inserted into this plastic housing and then cast with a casting compound by pouring out the plastic housing.
  • the transformer 23 on the output side is electrically connected to the inductor 24 before it is inserted into the plastic housing, so that after the potting, the electrical connection is arranged within the potting compound.
  • the plastic housing is structured and designed, for example, in such a way that the components used are securely positioned at the appropriate locations or chambers and maintain their position during casting.
  • the output connection of the assembly 28 to be connected to the output connection 25 is supplied with a high voltage. strikes and therefore leads out at a point on the assembly that lies opposite the other connections.
  • These remaining connections are designed, for example, as solder connections for a printed circuit board, so that the entire structural unit can be soldered to a printed circuit board and only the high-voltage connection is arranged on an end region of the structural unit opposite the printed circuit board.
  • the structural unit may contain, for example, only the output-side transformer 23 and the inductance 24, and for the other transformer 17 to be designed as a separate component.

Landscapes

  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

L'invention concerne un système d'allumage pour lampes à décharge gazeuse, notamment pour feux d'automobiles. Le système d'allumage comprend un premier transformateur (17), à partir de la tension secondaire duquel est formée la tension d'allumage à décharge gazeuse et auquel est acheminée côté primaire une tension alternative formée à partir d'une tension continue d'alimentation. Pour produire cette tension alternative, un condensateur (14) auquel est appliqué un courant de charge constitue, conjointement avec l'enroulement du circuit primaire du premier transformateur et un éclateur (16), un circuit, l'éclateur (16) se coupant lorsque le condensateur (14) parvient à un état de charge déterminé. Ce système permet de réaliser un dispositif simple, économique de faible encombrement pour produire la tension de service requise par le transformateur (17), l'éclateur étant fiable et pouvant s'utiliser même à des températures élevées.
EP95922416A 1994-07-05 1995-06-27 Systeme d'allumage pour lampes a decharge gazeuse, notamment pour feux d'automobiles Withdrawn EP0769240A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4423275 1994-07-05
DE4423275A DE4423275A1 (de) 1994-07-05 1994-07-05 Zündvorrichtung für Gasentladungslampen, insbesondere für Kraftfahrzeugleuchten
PCT/DE1995/000829 WO1996001550A1 (fr) 1994-07-05 1995-06-27 Systeme d'allumage pour lampes a decharge gazeuse, notamment pour feux d'automobiles

Publications (1)

Publication Number Publication Date
EP0769240A1 true EP0769240A1 (fr) 1997-04-23

Family

ID=6522125

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95922416A Withdrawn EP0769240A1 (fr) 1994-07-05 1995-06-27 Systeme d'allumage pour lampes a decharge gazeuse, notamment pour feux d'automobiles

Country Status (7)

Country Link
US (1) US5894202A (fr)
EP (1) EP0769240A1 (fr)
JP (1) JPH10502485A (fr)
KR (1) KR970704324A (fr)
AU (1) AU702380B2 (fr)
DE (1) DE4423275A1 (fr)
WO (1) WO1996001550A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19634750A1 (de) * 1996-08-28 1998-03-05 Hella Kg Hueck & Co Scheinwerfersystem für Kraftfahrzeuge
CN1227041A (zh) * 1997-05-21 1999-08-25 电灯专利信托有限公司 放电灯的引燃装置和放电灯的引燃方法
DE19803854A1 (de) * 1998-01-31 1999-08-05 Hella Kg Hueck & Co Einrichtung zum Zünden einer Hochdruckgasentladungslampe in einem Kraftfahrzeug
DE19823641A1 (de) 1998-05-27 2000-02-10 Bosch Gmbh Robert Zünder für eine Gasentladungslampe, insbesondere Hochdruck-Gasentladungslampe für Kraftfahrzeugscheinwerfer
DE50105397D1 (de) * 2000-12-19 2005-03-24 Vogt Electronic Ag Gasentladungslampensockel mit zündeinrichtung
JP4510635B2 (ja) * 2002-11-04 2010-07-28 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ パルスブースタ回路、放電灯用のドライバシステム、放電灯用のランプホルダ及び放電灯を点火する点火パルスの発生方法
US7760061B2 (en) * 2006-08-31 2010-07-20 General Electric Company Lamp transformer
US7855625B2 (en) * 2006-08-31 2010-12-21 General Electric Company Lamp transformer
US7456583B2 (en) * 2006-09-05 2008-11-25 General Electric Company Electrical circuit with dual stage resonant circuit for igniting a gas discharge lamp
US7460379B2 (en) * 2006-09-05 2008-12-02 General Electric Company Electrical circuit with voltage multiplier for facilitating ignition of a gas discharge lamp

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7404734U (de) * 1974-12-05 May & Christe Gmbh Zündgerät für Metalldampf-Hochdrucklampen
US3758815A (en) * 1972-01-04 1973-09-11 Gte Sylvania Inc Supplemental energy storage circuit for arc discharge lamps
DE2812623A1 (de) * 1978-03-22 1979-09-27 Patra Patent Treuhand Zuendgeraet fuer eine hochdruckentladungslampe
JPS6016080B2 (ja) * 1980-08-20 1985-04-23 ウシオ電機株式会社 直流放電灯点灯装置
JPS5738594A (en) * 1980-08-20 1982-03-03 Ushio Electric Inc Device for firing discharge lamp
DE4010473A1 (de) * 1990-03-31 1991-10-02 Vogt Electronic Ag Drossel-trafokombination zum betreiben von metalldampfhochdruck (mhd)-lampen aus bordnetzen von fahrzeugen
US5059867A (en) * 1990-04-03 1991-10-22 General Electric Company Ballast circuit with improved transfer functions
US5036256A (en) * 1990-06-21 1991-07-30 Gte Products Corporation Arc discharge ballast suitable for automotive applications
DE69114974T2 (de) * 1990-09-07 1996-04-11 Matsushita Electric Ind Co Ltd Beleuchtungsvorrichtung mit Entladungslampe.
DE4117288A1 (de) * 1991-05-27 1992-12-03 Hella Kg Hueck & Co Hochspannungs-zuenduebertrager zum zuenden und betreiben von wechselstrom-hochdruck-gasentladungslampen in kraftfahrzeugen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9601550A1 *

Also Published As

Publication number Publication date
AU2732095A (en) 1996-01-25
US5894202A (en) 1999-04-13
AU702380B2 (en) 1999-02-18
DE4423275A1 (de) 1996-01-11
JPH10502485A (ja) 1998-03-03
KR970704324A (ko) 1997-08-09
WO1996001550A1 (fr) 1996-01-18

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