EP1063870A1 - Fortbildung von Zündübertragern für Entladungslampen in Kraftfahrzeugscheinwerfern - Google Patents

Fortbildung von Zündübertragern für Entladungslampen in Kraftfahrzeugscheinwerfern Download PDF

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Publication number
EP1063870A1
EP1063870A1 EP00401446A EP00401446A EP1063870A1 EP 1063870 A1 EP1063870 A1 EP 1063870A1 EP 00401446 A EP00401446 A EP 00401446A EP 00401446 A EP00401446 A EP 00401446A EP 1063870 A1 EP1063870 A1 EP 1063870A1
Authority
EP
European Patent Office
Prior art keywords
transformer
module according
discharge lamp
circuit
priming module
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
EP00401446A
Other languages
English (en)
French (fr)
Other versions
EP1063870B1 (de
Inventor
René Tran
Jean Marc Nicolai
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.)
Valeo Vision SAS
Original Assignee
Valeo Vision SAS
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 Valeo Vision SAS filed Critical Valeo Vision SAS
Publication of EP1063870A1 publication Critical patent/EP1063870A1/de
Application granted granted Critical
Publication of EP1063870B1 publication Critical patent/EP1063870B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Definitions

  • the present invention relates to boot modules of discharge lamps especially for motor vehicles.
  • such a module priming comprises a transformer 1 whose secondary winding 1a is mounted in series with the discharge lamp (referenced by 3) and of which the primary winding 1b is in turn mounted in series with an element of switching 2 (IGBT thyristor spark gap).
  • a capacitor 4 is mounted in parallel to the branch comprising the spark gap 2 and the primary winding 1b.
  • the spark gap 2 and the transformer 1 allow to generate between the electrodes of the discharge lamp a high voltage ignition pulse (of the order of 12 to 25 KV).
  • the transformer 1 intervenes in the operation of the discharge lamp only by through its secondary winding 1a which plays the role of a self-inductance.
  • the transformers of the boot modules used for the discharge lamps of motor vehicle headlamps are generally dimensioned (electrically and mechanically) so as to that their secondary winding 1a has a saturation level high (saturation current generally greater than 4 amps).
  • boot modules and their transformers to integrate them either in the lamp bases discharge, either in connectors intended to receive bases of discharge lamps or in a compact electronic module performing all or part of the functions of the control circuit (called "ballast"), whether these are integrated or not.
  • An object of the invention is to solve this problem.
  • the invention in turn provides a priming module for a lamp motor vehicle discharge comprising a high transformer voltage which includes a magnetic circuit on which a primary winding and a secondary winding, characterized in that it further comprises means capable of modifying the magnetic characteristics of the transformer to push back the level saturation of the secondary winding thereof.
  • the invention also relates to a discharge lamp for a vehicle. automobile, characterized in that its base incorporates a module of the aforementioned type.
  • FIG. 2 shows the transformer 1 of a module initiation according to a possible embodiment of the invention
  • This transformer 1 is a toroidal type transformer.
  • It comprises a ring 5 made of a magnetic material, for example in ferrite, on which the primary winding 1b is wound on the one hand and on the other hand the secondary winding 1a.
  • This ring 5 is not completely closed on itself but has a gap separation 6, in which a magnet is arranged permanent 8.
  • This permanent magnet 8 is oriented so as to move the curve hysteresis of ring 5. This displacement of the hysteresis curve of ring 5 increases the current value for which we reach saturation of the magnetic circuit.
  • the permanent magnet 8 can be attached to an end edge of the ring 5 or, as shown in Figure 2, be arranged substantially in the middle of the air gap 6 without being in contact with the ring 5.
  • an element 7 which is in a non-magnetic and electrically insulating material which extends to through said air gap 6.
  • FIG. 3 shows the curve intensity of a current pulse I generated in the winding secondary 1a by a given circuit in the case of a transformer 1 without permanent magnet.
  • this curve 3 also shows the curve intensity of a current pulse generated in the winding secondary 1a by the same circuit, in case transformer 1 has a permanent magnet facing the wrong way.
  • the duration of the peak current t is elongated (from t1 to t2) which makes it easier to start the lamp.
  • magnet 8 is of a particular shape which prevents from mount it the wrong way.
  • the increase in the value of the current for which obtains a saturation of the magnetic circuit can also be achieved by supplying a complementary winding 9 wound on the ring 5 (winding shown in dotted lines in Figure 2). Food of winding 9 can be carried out permanently or temporarily.
  • the transformer structures which have just been described are particularly advantageous when wish to integrate the boot module for example, as illustrated on the Figures 4 and 5, in the base 10 of a discharge lamp or so as illustrated in FIG. 6, in a connection box 11 intended to receive a discharge lamp.
  • the toroidal transformer 1 extends in the base 10 perpendicular to the lamp 3.
  • the transformer 1 is received in a central zone of the housing 11, its axis being for example coincides with the axis of the connection zone 12 in which the base of the discharge lamp is intended to be received.
  • the housing 11 comprises in in addition to a lateral bulge 13 in which the element of reception is received switching 2 and capacitor 4.
  • the invention also advantageously finds application in the case where one wishes to integrate the boot module into a module electronics performing all or part of the control functions of the supply of a discharge lamp.
  • FIG. 7a This is what has been illustrated in FIG. 7a in which we have represented a ballast integrated in a connection box 15 intended to receive a discharge lamp 3.
  • a transformer is integrated in this case with the switching element 2, the capacitor 4 and an electronic command 14.
  • FIG. 7b the case has been illustrated where the ballast or a part of this is integrated into a module 16 which is offset from the connection box 17 on which the lamp 3 is inserted and to which said module 16 is connected.

Landscapes

  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP00401446A 1999-06-21 2000-05-24 Fortbildung von Zündübertragern für Entladungslampen in Kraftfahrzeugscheinwerfern Expired - Lifetime EP1063870B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9908057 1999-06-21
FR9908057A FR2795281B1 (fr) 1999-06-21 1999-06-21 Perfectionnements aux modules d'amorcage de lampes a decharge de projecteurs de vehicule automobile

Publications (2)

Publication Number Publication Date
EP1063870A1 true EP1063870A1 (de) 2000-12-27
EP1063870B1 EP1063870B1 (de) 2004-09-29

Family

ID=9547238

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00401446A Expired - Lifetime EP1063870B1 (de) 1999-06-21 2000-05-24 Fortbildung von Zündübertragern für Entladungslampen in Kraftfahrzeugscheinwerfern

Country Status (6)

Country Link
US (1) US6366023B1 (de)
EP (1) EP1063870B1 (de)
JP (1) JP4484324B2 (de)
DE (1) DE60014247T2 (de)
ES (1) ES2228422T3 (de)
FR (1) FR2795281B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006026943A1 (de) * 2004-08-31 2006-03-16 Patent-Treuhand- Gesellschaft Für Elektrische Glühlampen Mbh Verfahren zum betreiben einer hochdruckentladungslampe, betriebsvorrichtung für eine hochdruckentladungslampe und hochdruckentladungslampe mit einer betriebsvorrichtung
ITRN20130039A1 (it) * 2013-09-27 2015-03-28 Demos Fuochi Dispositivo di accensione per lampade a scarica.

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITRM20020594A1 (it) * 2002-11-25 2004-05-26 Sisti Lighting S P A De Dispositivo perfezionato per l'accensione e l'alimentazione
DE202005007484U1 (de) * 2005-05-11 2006-09-21 Vogt Electronic Components Gmbh Zündtransformator und Leuchtensockel für eine Entladungsleuchte
CN103559981B (zh) * 2013-11-20 2018-05-22 戴珊珊 交流永磁增益变压装置及其调压控制方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0515958A1 (de) * 1991-05-27 1992-12-02 Hella KG Hueck & Co. Hochspannungs-Zündübertrager zum Zünden und Betreiben von Wechselstrom-Hochdruck-Gasentladungslampen in Kraftfahrzeugen
EP0740494A2 (de) * 1995-04-27 1996-10-30 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Schaltungsanordnung zum Impulsbetrieb von Entladungslampen
JPH10270270A (ja) * 1997-03-28 1998-10-09 Matsushita Electric Ind Co Ltd 点火トランス
DE19751548A1 (de) * 1997-11-20 1999-06-02 Vogt Electronic Ag Zündtransformator für eine Entladungslampe

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3754541A (en) * 1969-11-04 1973-08-28 Hitachi Ltd Ignition system for internal combustion engine
US3766456A (en) * 1970-06-04 1973-10-16 D Carow Rotating electrical machine
US4194239A (en) * 1978-07-05 1980-03-18 Krishnaswamy Jayaram Electrical invertor apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0515958A1 (de) * 1991-05-27 1992-12-02 Hella KG Hueck & Co. Hochspannungs-Zündübertrager zum Zünden und Betreiben von Wechselstrom-Hochdruck-Gasentladungslampen in Kraftfahrzeugen
EP0740494A2 (de) * 1995-04-27 1996-10-30 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Schaltungsanordnung zum Impulsbetrieb von Entladungslampen
JPH10270270A (ja) * 1997-03-28 1998-10-09 Matsushita Electric Ind Co Ltd 点火トランス
DE19751548A1 (de) * 1997-11-20 1999-06-02 Vogt Electronic Ag Zündtransformator für eine Entladungslampe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 01 29 January 1999 (1999-01-29) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006026943A1 (de) * 2004-08-31 2006-03-16 Patent-Treuhand- Gesellschaft Für Elektrische Glühlampen Mbh Verfahren zum betreiben einer hochdruckentladungslampe, betriebsvorrichtung für eine hochdruckentladungslampe und hochdruckentladungslampe mit einer betriebsvorrichtung
ITRN20130039A1 (it) * 2013-09-27 2015-03-28 Demos Fuochi Dispositivo di accensione per lampade a scarica.
WO2015044973A1 (en) * 2013-09-27 2015-04-02 Alberto Menghi A starting device for discharge lamps
US9578725B2 (en) 2013-09-27 2017-02-21 Easylumen S.R.L. Starting device for discharge lamps

Also Published As

Publication number Publication date
JP4484324B2 (ja) 2010-06-16
DE60014247T2 (de) 2005-10-27
FR2795281B1 (fr) 2001-08-17
DE60014247D1 (de) 2004-11-04
US6366023B1 (en) 2002-04-02
JP2001010404A (ja) 2001-01-16
FR2795281A1 (fr) 2000-12-22
ES2228422T3 (es) 2005-04-16
EP1063870B1 (de) 2004-09-29

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