EP1979920B1 - Transformateur d'allumage et module d'allumage pour lampe a decharge - Google Patents

Transformateur d'allumage et module d'allumage pour lampe a decharge Download PDF

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Publication number
EP1979920B1
EP1979920B1 EP06706341A EP06706341A EP1979920B1 EP 1979920 B1 EP1979920 B1 EP 1979920B1 EP 06706341 A EP06706341 A EP 06706341A EP 06706341 A EP06706341 A EP 06706341A EP 1979920 B1 EP1979920 B1 EP 1979920B1
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EP
European Patent Office
Prior art keywords
ignition transformer
ignition
core
transformer
winding
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.)
Not-in-force
Application number
EP06706341A
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German (de)
English (en)
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EP1979920A1 (fr
Inventor
Roman Schichl
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.)
Sumida Components and Modules GmbH
Original Assignee
Vogt Electronic Components GmbH
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Publication of EP1979920A1 publication Critical patent/EP1979920A1/fr
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/12—Ignition, e.g. for IC engines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2847—Sheets; Strips
    • H01F2027/2857—Coil formed from wound foil conductor

Definitions

  • the present invention relates to an ignition transformer and an ignition module for a gas discharge lamp, such as a xenon lamp for headlights, as they are increasingly used for example in the vehicle sector.
  • the electronic components required for operating discharge lamps should be inexpensive and reliable to manufacture and assemble, so that the structure of the electronic components and the ignition transformer should enable a high degree of automation.
  • An improvement in this regard can be achieved, for example, by a rectilinear bar transformer, which offers the possibility of providing correspondingly fixed connection elements for the coil ends, so that automatic assembly is possible. Further succeeds to provide by the use of a straight-line rod transformer in conjunction with correspondingly designed electronic assemblies an ignition device in which the required for the ignition of the discharge lamp high voltage of about 30 kV is provided over a space range of about 4 cm x 4 cm x 2 cm. Despite this relatively compact construction, however, there are some restrictions on the size of the ignition transformer, since, for example, the application of the required turns for the secondary winding with the required dielectric strength possibly leads to a greater overall length of the rod transformer.
  • the increased stray field of the rod core transformer can lead to an increased level of interference radiation, whereby further structural measures, for example in the form of a shield, as well as the use of additional electronic components may be required, which can bring an increase in the entire ignition with it.
  • the publication NL 6 609 349 A shows a transformer with a magnetic core with opening and provided over the core winding.
  • the publication US 3,223,923 A shows a transformer with a magnetic core.
  • a conductive and an insulating film are wound around the core so that individual layers of the winding of the conductive film are insulated from each other.
  • the publication EP 0 515 958 A1 shows a transformer with a magnetic core and a surrounding the core primary and secondary winding consisting of a respective film, wherein between the individual layers of the primary and the secondary winding, an insulating film is arranged.
  • the publication EP 0 742 369 A1 shows a transformer with a magnetic core and a primary and a secondary winding.
  • the primary winding consists of two conductive foils with terminals forming a capacitor while the secondary winding is formed by a wire.
  • the publication WO 97/35336 A1 shows a gas discharge lamp with a toroidal transformer, which consists of a toroidal core and a two-winding winding arrangement for the toroidal core.
  • the publication EP 0 975 007 A1 shows a gas discharge lamp with a toroidal transformer.
  • the toroidal transformer has a primary and a secondary winding.
  • the publication EP 1 635 619 A2 shows a transformer with a trained as a pot core ferrite core and a primary and secondary winding.
  • the pot core consists of two identical halves, which are separated by a gap and enclose the primary and the secondary winding.
  • an ignition transformer for a gas discharge lamp having the features of claims 1 and 10.
  • the film winding has a relatively high intrinsic capacity, which thus leads to a desired, broader high-voltage pulse during ignition, whereby due to the high intrinsic capacity, a corresponding additional capacity may be omitted or designed to be much smaller that thus also results in the possibility to build a corresponding ignition module more compact. Also with regard to the manufacture of the ignition transformer resulting from the use of a film winding significant advantages, since, for example, the ignition transformer can be produced in a fully automated manner, so that significantly reduce the cost.
  • the passage opening in the magnetic core of the ignition transformer it is possible to at least partly accommodate certain components of a corresponding ignition module or a discharge lamp device.
  • the passage opening may be dimensioned such that at least part of a discharge piston can be accommodated therein, or connection conductors or other components of a corresponding ignition circuit may be provided in the passage opening, thereby also significantly reducing at least the overall height of the entire assembly can achieve.
  • the provision of the through hole may provide certain advantages in the assembly of a discharge lamp device, as explained in more detail below.
  • the magnetic core has a first end region, a second end region and a central region with a rectilinear section over which the film winding is applied.
  • a diameter of the central region of the magnetic core is smaller than a diameter of the first and / or the second end region.
  • the term diameter is to be understood here as a succinct radial dimension of the corresponding core section, which does not necessarily have to have a round cross-sectional shape.
  • the diameter may denote the maximum radial dimension of any cross-sectional shape.
  • the first and / or the second end region may have a correspondingly large diameter, which on the one hand contributes to a reduction of the magnetic scattering of the core and on the other hand can also serve as a mechanical limit for the applied film winding.
  • the magnetic core is a perforated mushroom core or a tube core with a collar.
  • a corresponding design of the magnetic core offers on the one hand the necessary winding space in the middle area and on the other hand an improved scattering behavior of the core, whereby the end area with the larger diameter can be dimensioned so that the diameter is equal to or greater than a diameter of the film winding thus to achieve a certain mechanical integrity of the film winding.
  • the passage opening has a larger diameter than at least part of a discharge piston of the discharge lamp.
  • the ignition transformer further comprises a conductor insulated from the foil winding for connection to the discharge lamp.
  • the insulated conductor is thus available for contacting the discharge piston and thus offers a very space-efficient connection configuration for the discharge piston, so that this also contributes efficiently to a reduction in the overall construction volume of a corresponding ignition module.
  • At least a part of the insulated conductor is laid in the film winding.
  • a corresponding connecting wire for example, a return conductor for the discharge piston, already provided during the manufacture of the ignition transformer and integrated with the application of the film winding, so that on the one hand, a significant reduction in space requirements in a corresponding ignition module results and on the other hand Reliable and mechanically stable installation of the lead wire is guaranteed in an automated manner
  • the ignition transformer has a channel for receiving a conductor.
  • a mechanically robust installation of the connection conductor can be achieved, the overall configuration of the ignition transformer remaining substantially unaffected.
  • a corresponding slight reduction in the inductance of the core due to the provision of the channel as it passes through the core can be efficiently achieved by a corresponding design of the core can be compensated.
  • the channel may be provided in a bobbin, especially if the conductor is a similar one Potential leads as the beginning of the film winding, which is applied directly to the winding body.
  • an insulating tube is arranged in the film winding.
  • the ignition transformer comprises a connecting conductor guided through the core and insulated therefrom, or a channel suitable for receiving the connecting conductor.
  • the use of a foil winding for the ignition transformer offers significant advantages in terms of size, processing, withstand voltage and the subsequent installation of a gas discharge lamp device. Furthermore, due to the running through the core or the film winding insulated connection conductor or a channel for receiving a connecting conductor, the possibility to contact a corresponding discharge piston in a very space-efficient manner. Furthermore, the provision of the insulated connection conductor or a channel for its reception achieves a high degree of mechanical integrity of the connection connection.
  • connection conductor or the channel for the connection conductor is provided in the film winding.
  • a bore is provided in the core forming the channel.
  • the configuration of the core may be selected such that the film winding is positioned over a central region of the core bounded by first and second end regions, wherein in some embodiments the first and / or second end regions may have a larger diameter, as the middle area.
  • the object is achieved by an ignition module for a gas discharge lamp according to claim 19.
  • the design of the ignition transformer with foil winding and a connection lead or a through-hole makes possible a very compact design of the ignition module, whereby in addition to an overall significant reduction of the construction volume, in particular a reduction of the overall height can be achieved, so that in combination with a discharge lamp, a compact and reliable device for use in headlights, such asharischeinwerfem results.
  • the overall volume of the housing part with the at least one electronic component and the ignition transformer is less than approximately 20 cm 3 .
  • An appropriate dimensioning of the ignition module can thus be integrated into virtually any gas discharge devices in an efficient manner, without significantly influencing the function and design of the device.
  • the ignition module can be used as a light socket due to the provision of the ignition transformer with a corresponding through hole in the configuration already shown due to this small volume.
  • the housing part advantageously has a housing opening aligned with the passage opening of the core, so that a corresponding discharge piston can be at least partially inserted through this housing opening during assembly.
  • the object is achieved by a gas discharge lamp device according to claim 23.
  • At least one connecting conductor of the gas discharge piston is guided through the ignition transformer.
  • connection conductors is led through the foil winding, so that the construction of the ignition transformer essentially determines the routing in the device and also ensures a high degree of automation in the production.
  • the connecting wires can be guided so that results in a relatively low voltage between the corresponding winding sections to which these connecting wires are connected.
  • the connection lead provided for carrying the high voltage may be routed near the corresponding output of the secondary winding, while a return conductor for the discharge bulb may be routed near the primary winding or the other end of the secondary winding, for example.
  • the at least one connecting conductor is guided through a bore of the core of the ignition transformer.
  • the bore can be dimensioned so that only a corresponding connection conductor is guided therein, or in other embodiments, a corresponding passage opening can be provided in the core, which can also accommodate the discharge piston, so that the discharge piston at least partially placed in the through hole and there can be contacted.
  • the passage opening further comprises a plug of insulating material, for example a potting material.
  • a magnetic material may also be integrated in the insulating material in order to increase the magnetically effective volume of the core.
  • an end of the discharge piston projecting into the passage opening is connected to an innermost connection of the film winding.
  • an extremely small potential difference results in the interior of the passage opening.
  • the second terminal of the discharge bulb is provided in a region of the ignition transformer, which is located in the vicinity of the second terminal of the secondary winding, so that also a very small potential difference between the return conductor and the film winding is present. As a result, a highly reliable high-voltage behavior can be achieved despite the compact design.
  • Fig. 1a schematically shows an ignition transformer 100, which comprises a core 110 of magnetic material, such as a ferrite material, and a film winding 120.
  • the core 110 in the embodiment shown, has a first end portion 111, a second end portion 112, and a middle rectilinear portion 113 over which the film winding 120 is applied.
  • the core 110 has a longitudinal direction 115 and in the section shown a lateral or radial direction 116, wherein In the illustrated embodiment, the dimension of the end portion 112 in the lateral direction is greater than a corresponding dimension of the middle portion 113.
  • a corresponding dimension in the lateral and radial directions 116 will be referred to herein as a diameter, however in that the cross-sectional shape in the plan view, as shown below Fig. 1c is shown, in advantageous embodiments is round, but not necessarily must be round, but also any shape, for example, angular with rounded edges, oval, etc. may be.
  • a through hole 114 is formed in the first end portion 111, the middle portion 113, and the second end portion 112.
  • the passage opening 114 can be dimensioned in advantageous embodiments in its lateral dimension so that at least a portion of a discharge piston can be inserted into the through hole 114.
  • a diameter of the passage opening 114 may be in the range from 1 to several millimeters, for example approximately 4 mm, so that the discharge piston of a gas discharge lamp, for example a xenon lamp, can be passed through the opening 114.
  • the through-hole 114 may have corresponding dimensions such that it serves as a channel for receiving one or more conductors.
  • a recess (not shown) is provided in one of the end regions 112 and 111, respectively and in a part of the middle portion 113, so that an electronic component or a part of a discharge bulb can be received in the corresponding recess.
  • the film winding 120 has at least one primary winding 121 and a secondary winding 122.
  • the primary winding 121 and the secondary winding 122 are provided as a plurality of winding sections which are interleaved to enhance the magnetic coupling of the primary winding 121 and the secondary winding 122, and thus the efficiency of the ignition transformer 100.
  • an innermost winding section of the secondary winding 122 may be followed by a corresponding winding section of the primary winding 121, to which ends in turn, another Wicklungsabschnift the secondary winding 122 followed by a winding section of the primary winding 121 can connect.
  • any other configurations are possible to achieve a high degree of magnetic coupling of the primary winding and the secondary winding 121, 122.
  • the individual winding sections of the primary winding 121 and the secondary winding 122 are designed as a film winding, wherein a film of conductive material, such as aluminum, copper, alloys thereof, and the like are applied together with an insulating layer material as a stack of electrically insulated windings.
  • a film of conductive material such as aluminum, copper, alloys thereof, and the like
  • an insulating layer material as a stack of electrically insulated windings.
  • the secondary winding 122 approximately 80 to 300 turns may be provided in total, while for the primary winding 121, a few turns may be provided.
  • approximately 100 to 200 turns may be provided in the innermost winding section of the secondary winding 122, followed by two turns of the primary winding 121, followed by approximately another 50 to 100 turns of the secondary winding 122 with a final turn for the primary winding 121st
  • Fig. 1 b shows in greater detail the schematic structure of the film winding 120, wherein a film of conductive material 123 with a film of insulating material 124 alternates.
  • the widths of the films 123, 124 ie the dimension in the longitudinal direction 115 in the illustrated view, are preferably chosen so that the film of insulating material 124 reliably protrudes beyond the edges of the film of conductive material 123 in order reliably to prevent a short circuit between individual winding sections.
  • an excess of about 1 or 2 mm may be provided for the sheet 124 of insulating material on each side.
  • the winding is applied to a suitably designed winding body, which may be made of plastic material, or in other embodiments, the winding 120 may be applied directly to the core 110.
  • Fig. 1c schematically shows the ignition transformer 100 of Fig. 1a in the plan view, wherein further a plurality of corresponding terminals 125a, ..., 125d are shown, which are used to connect the individual winding sections, if provided, the primary and Secondary windings 121 and 122 and serve as terminals, the primary winding 121 and the secondary winding 122.
  • the connections 125a,..., 125d are provided only on one side of the core 110 with respect to its longitudinal direction, ie for example in the region of the first or the second end region 111 or 112.
  • the connections 125a,..., 125d may be provided in the form of wire lines, which are electrically connected to corresponding terminal portions of the film 123 in a suitable manner.
  • the winding 120 can be applied to the core 110 in a fully automated manner by winding a corresponding winding body or by direct winding, so that a small degree of manufacturing tolerance results.
  • a suitable structure of the winding 120 can also be achieved. that the large potential difference across the secondary winding drops almost over the entire diameter 126 of the winding 120, so that high potential differences in a small spatial area, as typically found in conventional ignition transformers, are significantly reduced. For example, one of the terminals 125a, ...
  • 125d connected to the inner terminal of the secondary winding 122 may be made to open in the vicinity of the through hole 114, so that a contact of a discharge piston to be connected to the corresponding terminal, which is provided, at least partially, in the through-hole 114, is spatially separated almost completely from the other terminal of the secondary winding 122 by the entire diameter 126. In this way, the risk of electrical flashovers in the discharge piston can be significantly reduced.
  • Fig. 1d schematically shows the ignition transformer 100 according to another illustrative embodiment, is provided in the connection conductor or a channel for a connection conductor and extends at least partially in the longitudinal direction by the ignition transformer 100.
  • a connection conductor 130 which may for example serve as a return conductor for a corresponding discharge piston, is provided in the film winding 120.
  • the member 130 may represent a respective insulating tube in which a corresponding lead wire is to be inserted during subsequent assembly.
  • the connecting wire 130 or the corresponding insulating tube can during the application of the winding 120 at a suitable position in the radial direction (see Fig.
  • the conductor 130 or the insulating tube can be provided at a radially outer region of the winding 120, that, when the conductor 130 or the lead to be led into a corresponding insulating tube, represents a return conductor, a large spatial distance to the inner, the High voltage leading connection of the winding 120 is achieved.
  • a channel 131 is provided, which extends through at least part of the core 110, in order to produce a corresponding connection conductor for an electrical connection between components which are produced by the ignition transformer 100 are separated in a corresponding module.
  • corresponding lead wires for the discharge bulb may be passed through one or more of the channels 131 through the core.
  • the channel 131 may be used to connect the high voltage end of the winding 120 to a corresponding terminal of the discharge bulb, while the return may occur via the terminal conductor 130 or a corresponding insulating tube, so that there is a large spatial separation between the two conductors is complied with.
  • Fig. 1e shows an example of such a variant, in which the ignition transformer 100 is formed on a first side 101 for the connection of a discharge piston 150, while a second side 102 for connection to other electronic components, such as capacitors, spark gaps, etc. is formed.
  • the connection conductors 130, 131 are connected to the winding 120 via corresponding connections 125a, 125d, a correspondingly large spatial distance between the conductors 130 and 131 being achieved.
  • corresponding terminal regions 132 and 133 can be provided in the end region 112, in which the discharge piston 150 can be electrically and mechanically connected to the ignition transformer 100, the connection being provided permanently or detachably can, so that a high degree of flexibility in attaching the discharge piston 150 is achieved.
  • Fig. 2a schematically shows an ignition module 260 in a plan view according to an illustrative embodiment of the present invention.
  • the ignition module 260 has a housing part 261, in which an ignition transformer 200 and one or more electronic components 263 are arranged.
  • the entirety of the electronic components 263 represent any suitable components, such as a capacitor, a spark gap, etc., which are required in conjunction with the ignition transformer 200 to generate the appropriate high ignition voltage for a discharge lamp.
  • the ignition transformer 200 includes a foil winding 220 and, in some embodiments, has a through-opening 214.
  • the ignition transformer 200 may have a structure as described above, and in particular also in connection with the ignition transformer 100 of FIG FIGS. 1a to 1e is explained.
  • a corresponding connection region 225 is provided, which establishes an electrical connection to corresponding connections of a connection region 264 of the ignition module 260.
  • a connection part 262 is provided which has corresponding connection contacts in order to supply at least the supply power for the ignition module 260.
  • Fig. 2b schematically shows a cross section of the ignition module 260.
  • a total small size for the ignition module 260 can be achieved, wherein in advantageous embodiments, the total construction volume of the housing part 261 including the transformer 200 and the respective electronic components 263 about 20 cm 3 or significantly less.
  • this particularly compact design can be achieved in that due to the film winding 220 a precise winding with a large conductor cross-section is possible, which can avoid due to the favorable voltage drop from the inside to the outside otherwise required creepage distances or significantly increase.
  • the flat stacked structure of the film winding 220 offers a high intrinsic capacity, so that a corresponding Pulse processing by external components can be avoided or reduced, which in turn is reflected in a small volume of construction.
  • Fig. 2c and 2d show the housing part 261 with the attached connector part 262 according to an illustrative embodiment in a perspective view.
  • the housing part 261 in this case has a housing opening 265, which in the assembled state of the ignition module 260 to the through hole 214 (see Fig. 2a and 2b ) of the ignition transformer 200 is aligned, so that the passage opening 214 is accessible from the outside.
  • an electronic component or a part of the discharge lamp can be inserted into the passage opening 214 and a corresponding contact can be made from the rear side.
  • the module 260 can be cast from one side, in order to increase the mechanical and electrical stability.
  • a correspondingly shaped board are constructed, which contains the transformer 200 and the components 263 and the connections 264, and are inserted into the housing part 261.
  • the unit may then be potted, in some embodiments, as explained in more detail below, the ignition transformer 200 may be connected to a discharge piston before potting, so that by the potting a displacement of the air or other gases the potting material takes place and thus a corona discharge is avoided.
  • a corresponding connection area for receiving a discharge piston can be provided, wherein corresponding connection lines, as for example in the Fig. 1d and 1e are shown, which are guided by the ignition transformer, appropriately equipped and potted.
  • Fig. 3a schematically shows a discharge lamp device 370, which includes an ignition module 360 and a discharge piston 350.
  • the ignition module 360 has a housing part 361 in which, in addition to electronic components (not shown), an ignition transformer 300 with a foil winding is provided.
  • Ignition transformer 300 may also be identical in construction Ignition transformers, as described above and as particularly associated with the Fig. 1a to 1 e and Fig. 2a and 2b are shown and explained.
  • the ignition transformer 300 has a through hole 314 into which the discharge piston 350 is partially inserted, with a first electrode 351 connected to a lead 331 guided in the opening 314.
  • a second electrode 352 of the piston 350 is connected to a corresponding terminal of the transformer 300 via a return conductor 330, which in the illustrated embodiment passes through the foil winding of the ignition transformer.
  • the ignition module 360 can be manufactured, as for example in connection with FIG Fig. 2a to 2d is described, for example, for the conductor 330 corresponding insulating tubes or a connecting wire in the film winding of the transformer 300 may be provided.
  • the discharge piston 350 is then inserted into the opening 314 from either side, wherein a dimension of the opening 314 is preferably sized such that at least a desired portion of the discharge piston 350 is inserted into the opening 314 with a small tolerance can be.
  • a corresponding stop may be provided in the passage opening 314 such that the piston 350 may be inserted into the opening 314 only to a desired target depth.
  • the diameter of the opening 314 may be reduced, so that only the connection conductor 331 can be guided through the transformer 300, while the penetration depth of the piston 350 is predetermined by the constriction
  • the device 370 can then mechanically stabilized by casting and the desired high insulation resistance can be achieved.
  • Fig. 3b shows the device 370 during a corresponding casting process 380, in which the ignition module 360 is filled with potting compound 381, wherein in particular a corresponding plug of insulating material 382 forms in the remaining passage opening 314.
  • the piston 350 can be hermetically sealed into the ignition module 360, so that the module 360 also
  • the connection conductor 331 which for example leads the high voltage from the transformer 300 to the discharge piston 350, is laid in a region of the ignition module 360 in which the foil winding of the transformer 300 is likewise at high potential, so that there is only a very small potential difference between the conductor 331 and the ignition transformer 300.
  • the return conductor 330 may be passed through the ignition transformer 300, ie, the corresponding foil winding, in a relatively large distance region to the inner portion of the winding so that a potential difference between the conductor 330 and corresponding winding regions is also relatively small. In this way, the insulation strength requirements of the conductor 330 passing through the transformer 300 are relatively low, thus ensuring reliable operation.
  • the present invention thus provides a compact and robust ignition transformer, which allows a significant reduction in the size of an ignition module.
  • the shape of the core of the ignition transformer according to the invention is not limited to the embodiments shown in the drawings and can be adapted to the purpose and the manufacturing process accordingly.
  • each of the end portions may have a larger diameter than the middle portion to serve as an end plate for the rod-shaped central portion.
  • the core may be directly wound when both end portions of increased diameter are manufactured as a unit with the central portion.
  • a corresponding end plate can be retrofitted after assembly of the applied to a bobbin film winding.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Claims (28)

  1. Transformateur d'allumage (100 ; 200 ; 300) pour une lampe à décharge gazeuse, avec un noyau magnétique (110 ; 210) et un enroulement en feuille (120 ; 220) prévu sur le noyau magnétique (110 ; 210), étant précisé que le noyau magnétique (110 ; 210) présente une ouverture de passage (114 ; 214 ; 314) qui est entourée par l'enroulement en feuille (120 ; 220),
    caractérisé en ce que le noyau magnétique (110 ; 210) est constitué par un noyau en forme de champignon percé ou par un noyau tubulaire à collerette.
  2. Transformateur d'allumage (100 ; 200 ; 300) selon la revendication 1, étant précisé que le noyau magnétique (110 ; 210) présente une première zone d'extrémité (111), une seconde zone d'extrémité (112) et une zone centrale (113) avec une partie rectiligne sur laquelle est disposé l'enroulement en feuille (120 ; 220).
  3. Transformateur d'allumage (100 ; 200 ; 300) selon la revendication 2, étant précisé qu'un diamètre de la partie centrale (113) est plus petit qu'un diamètre des première et/ou seconde zones d'extrémité (111, 112).
  4. Transformateur d'allumage (100 ; 200 ; 300) selon l'une des revendications 1 à 3, étant précisé que l'ouverture de passage (114 ; 214 ; 314) présente un diamètre de 1 mm à 5 mm.
  5. Transformateur d'allumage (100 ; 200 ; 300) selon l'une des revendications 1 à 4, étant précisé que l'ouverture de passage (114 ; 214 ; 314) présente un plus grand diamètre qu'une partie au moins d'un ampoule de décharge (150 ; 350) de la lampe à décharge.
  6. Transformateur d'allumage (100 ; 200 ; 300) selon l'une des revendications 1 à 5, qui comprend par ailleurs un conducteur (130 ; 330) isolé par rapport à l'enroulement en feuille (120 ; 220), pour être relié à la lampe à décharge.
  7. Transformateur d'allumage (100 ; 200 ; 300) selon la revendication 6, étant précisé qu'une partie au moins du conducteur isolé (130 ; 330) est placée dans l'enroulement en feuille (120 ; 220).
  8. Transformateur d'allumage (100 ; 200 ; 300) selon l'une des revendications 1 à 7, qui comporte par ailleurs un conduit qui traverse le noyau (110 ; 210) et qui est destiné à recevoir un conducteur (130 ; 330).
  9. Transformateur d'allumage (100 ; 200 ; 300) selon l'une des revendications 1 à 8, qui comprend par ailleurs un tube isolant disposé dans l'enroulement en feuille (120 ; 220).
  10. Transformateur d'allumage (100 ; 200 ; 300) pour une lampe à décharge gazeuse, avec un noyau magnétique (110 ; 210) et un enroulement en feuille (120 ; 220) prévu sur le noyau magnétique (110 ; 210), étant précisé que le noyau comporte un conducteur de raccordement isolé (130 ; 131 ; 330, 331) qui traverse le noyau (110 ; 210), ou un conduit apte à recevoir le conducteur de raccordement,
    caractérisé en ce que le noyau magnétique est constitué par un noyau en forme de champignon percé ou par un noyau tubulaire à collerette.
  11. Transformateur d'allumage (100 ; 200 ; 300) selon la revendication 10, étant précisé que le conducteur de raccordement (130, 330) ou le conduit est prévu dans l'enroulement en feuille (120 ; 220).
  12. Transformateur d'allumage (100 ; 200 ; 300) selon la revendication 10, étant précisé qu'il est prévu dans le noyau (110 ; 210) un perçage qui forme le conduit (130 ; 230)
  13. Transformateur d'allumage (100 ; 200 ; 300) selon l'une des revendications 10 à 12, étant précisé que le noyau magnétique (110 ; 210) présente une première zone d'extrémité (111), une seconde zone d'extrémité (112) et une zone centrale (113) sur laquelle est disposé l'enroulement en feuille (120 ; 220).
  14. Transformateur d'allumage (100 ; 200 ; 300) selon la revendication 13, étant précisé qu'un diamètre de la partie centrale (113) est plus petit qu'un diamètre des première et/ou seconde zones d'extrémité (111, 112).
  15. Transformateur d'allumage (100 ; 200 ; 300) selon la revendication 13 ou 14, étant précisé qu'une zone d'extrémité (111, 112) et la zone centrale (113) présentent un évidement pour recevoir une partie au moins d'une ampoule de décharge (150 ; 350).
  16. Transformateur d'allumage (100 ; 200 ; 300) selon l'une des revendications 10 à 15, qui comporte par ailleurs dans le noyau (110 ; 210) une ouverture de passage (114 ; 214 ; 314) qui est au moins en partie entourée par l'enroulement en feuille (120 ; 220).
  17. Transformateur d'allumage (100 ; 200 ; 300) selon la revendication 16, étant précisé que l'ouverture de passage (114 ; 214, 314) présente un plus grand diamètre qu'une ampoule de décharge (150 ; 350) de la lampe à décharge.
  18. Module d'allumage (260 ; 360) pour une lampe à décharge gazeuse, avec
    un élément formant boîtier (261 ; 361),
    au moins un composant électronique (263) disposé dans l'élément formant boîtier (261 ; 361), et
    un transformateur d'allumage (100 ; 200 ; 300) selon l'une des revendications 1 à 17 qui est disposé dans l'élément formant boîtier (261 ; 361) et qui est relié audit composant électronique (263).
  19. Module d'allumage (260 ; 360) selon la revendication 18, étant précisé qu'un volume de construction de l'élément formant boîtier (261 ; 361) avec le ou les composants électroniques (263) et le transformateur d'allumage (100 ; 200 ; 300) est inférieur à environ 20 cm3.
  20. Module d'allumage (260; 360) selon la revendication 18 ou 19, étant précisé que le noyau magnétique (110 ; 210) présente une ouverture de passage (114 ; 214 ; 314) et que l'élément formant boîtier (261 ; 361) présente une ouverture de boîtier (265) située dans l'alignement de l'ouverture de passage (114 ; 214 ; 314).
  21. Module d'allumage (260; 360) selon l'une des revendications 18 à 20, qui comporte par ailleurs une zone de raccordement (264) qui est installée sur l'élément formant boîtier (261 ; 361) et qui est conçue pour fournir une puissance d'alimentation.
  22. Dispositif à lampe à décharge gazeuse (370) avec
    un module d'allumage (260 ; 360) selon l'une des revendications 18 à 21 et
    une ampoule de décharge (150 ; 350) reliée à un enroulement secondaire du transformateur d'allumage (100 ; 200 ; 300).
  23. Dispositif à lampe à décharge gazeuse (370) selon la revendication 22, étant précisé qu'un conducteur de raccordement (130, 131 ; 330, 331) de l'ampoule de décharge gazeuse (150, 350) traverse le transformateur d'allumage (100 ; 200 ; 300).
  24. Dispositif à lampe à décharge gazeuse (370) selon la revendication 23, étant précisé que le conducteur de raccordement (130, 131 ; 330, 331) traverse un perçage du noyau (110 ; 210) du transformateur d'allumage (100 ; 200 ; 300).
  25. Dispositif à lampe à décharge gazeuse (370) selon la revendication 23 ou 24, étant précisé que le conducteur de raccordement (130 ; 330) traverse l'enroulement en feuille (120 ; 220).
  26. Dispositif à lampe à décharge gazeuse (370) selon l'une des revendications 22 à 25, étant précisé que le noyau magnétique (110, 210) présente une ouverture de passage (114 ; 214 ; 314) dans laquelle est introduite une partie au moins de l'ampoule de décharge (150 ; 350).
  27. Dispositif à lampe à décharge gazeuse (370) selon la revendication 26, qui comporte par ailleurs un bouchon en matériau de scellement (382), qui est introduit au moins en partie dans l'ouverture de passage (114 ; 214 ; 314).
  28. Dispositif à lampe à décharge gazeuse (370) selon la revendication 26, étant précisé qu'une extrémité de l'ampoule de décharge (150 ; 350) qui entre dans l'ouverture de passage (114 ; 214 ; 314) est reliée à un raccordement intérieur (132) de l'enroulement en feuille (120 ; 220).
EP06706341A 2006-01-20 2006-01-20 Transformateur d'allumage et module d'allumage pour lampe a decharge Not-in-force EP1979920B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2006/000525 WO2007087818A1 (fr) 2006-01-20 2006-01-20 Transformateur d'allumage et module d'allumage pour lampe a decharge

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EP1979920A1 EP1979920A1 (fr) 2008-10-15
EP1979920B1 true EP1979920B1 (fr) 2012-03-07

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EP (1) EP1979920B1 (fr)
AT (1) ATE548739T1 (fr)
ES (1) ES2382447T3 (fr)
WO (1) WO2007087818A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102227786B (zh) * 2008-11-28 2013-09-04 欧司朗股份有限公司 集成的气体放电灯和用于集成的气体放电灯的点火变压器

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3223923A (en) 1962-07-02 1965-12-14 Gen Electric Pulse transformer
NL6609349A (fr) 1966-03-15 1967-09-18
DE4117288A1 (de) 1991-05-27 1992-12-03 Hella Kg Hueck & Co Hochspannungs-zuenduebertrager zum zuenden und betreiben von wechselstrom-hochdruck-gasentladungslampen in kraftfahrzeugen
IT1279206B1 (it) 1995-05-12 1997-12-04 Magneti Marelli Spa Circuito di innesco per dispositivi accenditori.
DE19610385A1 (de) 1996-03-16 1997-09-18 Bosch Gmbh Robert Gasentladungslampe, insbesondere für Kraftfahrzeug-Scheinwerfer
DE19831042A1 (de) 1998-07-13 2000-02-17 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Beleuchtungssystem mit einer Hochdruckentladungslampe
DE102004044368A1 (de) 2004-09-10 2006-03-16 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Transformator und Zündvorrichtung mit einem Transformator sowie Hochdruckentladungslampe mit einem Transformator

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Publication number Publication date
EP1979920A1 (fr) 2008-10-15
WO2007087818A1 (fr) 2007-08-09
ES2382447T3 (es) 2012-06-08
ATE548739T1 (de) 2012-03-15

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