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 PDFInfo
- 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- Withdrawn
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Images
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)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITTO970628 | 1997-07-11 | ||
IT97TO000628A IT1293443B1 (it) | 1997-07-11 | 1997-07-11 | Dispositivo di comando per una lampada a scarica di gas, particolarmente per autoveicoli. |
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
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 |
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 |
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)
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 |
-
1997
- 1997-07-11 IT IT97TO000628A patent/IT1293443B1/it active IP Right Grant
-
1998
- 1998-07-09 EP EP98112781A patent/EP0891123A1/fr not_active Withdrawn
Patent Citations (6)
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)
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 |
EP0933975A2 (fr) * | 1998-01-31 | 1999-08-04 | Hella KG Hueck & Co. | Transformateur d' amorçage |
EP0933975A3 (fr) * | 1998-01-31 | 2000-11-02 | 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 |
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 |
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 |
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 |
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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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE ES FR GB NL SE |
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AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
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17P | Request for examination filed |
Effective date: 19990529 |
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AKX | Designation fees paid |
Free format text: DE ES FR GB NL SE |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
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18W | Application withdrawn |
Withdrawal date: 20020207 |