EP1880586B1 - Starter transformer and lamp socket for a discharge lamp - Google Patents
Starter transformer and lamp socket for a discharge lamp Download PDFInfo
- Publication number
- EP1880586B1 EP1880586B1 EP05799804A EP05799804A EP1880586B1 EP 1880586 B1 EP1880586 B1 EP 1880586B1 EP 05799804 A EP05799804 A EP 05799804A EP 05799804 A EP05799804 A EP 05799804A EP 1880586 B1 EP1880586 B1 EP 1880586B1
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- EP
- European Patent Office
- Prior art keywords
- ignition transformer
- core
- magnetic core
- transformer
- discharge lamp
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- 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.)
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- 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
- 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
- H01F38/08—High-leakage transformers or inductances
- H01F38/10—Ballasts, e.g. for discharge lamps
Definitions
- the present invention relates to an ignition transformer and a lamp socket for receiving an ignition transformer for a discharge lamp, such as a xenon lamp for headlights, as they are increasingly used for example in the vehicle sector.
- gas discharge lamps such as xenon lights
- compact dimensions of the control electronics for the discharge lamp for example when used in mobile devices
- the necessary for operating discharge lamps electronic components including the ignition transformer should be inexpensive and reliable mountable, so that the construction of the light socket and the electronic components and the ignition transformer to enable automatic assembly.
- kV kiloVolt
- the required high ignition voltage is generated by means of an ignition transformer, which in turn receives a relatively low primary voltage of about a few 100 volts from a corresponding electronic ballast and then transforms them into the high ignition voltage.
- ignition transformers are often used, but because of their geometric shape and peculiarities make automatic assembly extremely difficult, since corresponding connection elements of the primary and secondary windings can not be provided in a permanently mountable manner.
- Fig. 1a 11 shows a perspective view of a conventional straight-line rod core transformer 100 which has a coil body 101 with a plurality of chambers 101 a,..., 101 e, in which respective respective winding sections 102 a,..., 102 e are applied, which together form the secondary winding of the ignition transformer 100 form.
- a corresponding primary winding which may be formed for example from a few turns of a suitable conduction band on the bobbin 101, not shown.
- end plates 103 at the ends of an in Fig. 1a non-visible magnetic core to improve the magnetic properties of the otherwise open Zündkemtransformators 100 provided.
- Fig. 1b schematically shows a plan view of a conventional lamp base 150 with a housing part 151, in which the ignition transformer 100 is housed.
- the ignition transformer 100 includes a rectilinear magnetic core 104 on which the winding portions 102a, ..., 102e are applied by the bobbin 101.
- the ignition transformer 100 is arranged adjacent to a connection region 153 enclosed by insulation material 152.
- the connection region 153 serves to receive a high-voltage connection contact of the discharge lamp, the insulation material 152 to provide reliable isolation to surrounding electronic components.
- a second terminal area 154 for a second terminal of the discharge lamp, for example the ground terminal, is provided adjacent to the first terminal area 153.
- Fig. 1 b For the sake of simplicity not shown. Due to the compact construction of the light socket 150, however, there are certain limitations for the configuration of the ignition transformer 100, the length of the rod-shaped ignition transformer 100 and the cross section of the magnetic core 104 and the available winding space of the individual chambers 101 a, e concern.
- the number of turns in the winding section in the chamber 102c, and thus also in the remaining chambers 102a-102e can only be selected to be that in the central chamber 102c available winding space is fully utilized.
- the wire diameter of the secondary winding may need to be dimensioned accordingly, so that under certain circumstances this results in an increased winding resistance.
- the desired number of turns can not be achieved, so that possibly a higher input voltage is required or the output voltage for the discharge lamp can not be up-converted to the desired voltage itself.
- Fig. 1c shows a further embodiment according to the prior art, wherein the leakage flux is reduced and the magnetic and electrical properties of the light socket are improved.
- a further field guide plate 103a is provided, which extends substantially over an extended distance parallel to the core 100 and thus contributes to an improved behavior of the core 104.
- the winding and space utilization constraints set forth above still result.
- the above object is achieved by an ignition transformer for a gas discharge lamp, wherein the ignition transformer has an open, non-rectilinear magnetic core and an applied on the magnetic core bobbin with a plurality of chambers for receiving a secondary winding.
- the open design can be maintained, which, in contrast to a closed ring core, allows the provision of permanently mountable connection areas for the corresponding coil ends and at the same time supports automatic assembly.
- the term "open” should be understood to mean that the magnetic core does not form a self-contained magnetic circuit.
- the term "non-rectilinear” is intended to describe all core geometries that deviate from the rectilinear form, i. a rectilinear shape is to be understood as a core shape in which a single direction is sufficient to define a longitudinal axis substantially corresponding to the direction of flow defined by the winding. Thus, a non-rectilinear shape is defined by at least two different directions of the flow direction.
- the term “non-rectilinear” with respect to the overall shape of the core is to be understood, so that, for example, straight sections may be present, but the overall configuration deviates from the above straight-line geometry.
- the magnetic core is arcuate. Due to this arcuate shape, an efficient adaptation of electrical properties, such as the number of turns and the like is possible, since a higher number of winding layers compared to a straight rod core can be applied, especially in peripheral regions for a given core cross-section.
- the magnetic core has a plurality of rectilinear sections, which are arranged offset to one another.
- windings can be applied in an automated manner in a particularly efficient manner, since the ratios in winding the respective rectilinear portions correspond to the conditions when winding a rod-shaped linear Kerns correspond. For example, due to the lack of rounding in corresponding chambers, a greater number of turns may be applied and / or a larger wire diameter may be used compared to a chamber with roundness.
- transition areas of the magnetic core which are provided between the rectilinear portions, and the rectilinear portions have substantially the same cross-section.
- the staggered arrangement of the plurality of rectilinear sections is formed in a single defined plane.
- the effective elongation of the magnetic core can be accomplished in a plane compared to a rod core so that a high degree of compactness can still be maintained in the direction perpendicular to this plane.
- a desired degree of rounding in the defined plane can be set by selecting the number, the dimension and the degree of dislocation of the individual sections.
- a plurality of the rectilinear portions may be staggered in different planes so that, if desired, the effective length of the magnetic core may be adjusted without exceeding the dimensions of a plan of a corresponding luminaire pedestal, for example, if some tolerance is available in the elevation direction ,
- a plurality of rectilinear sections are provided such that at least two of the rectilinear sections form legs of the magnetic core arranged at an angle to one another.
- the legs form substantially a right angle.
- the provision of two such legs results in a substantially L-shaped core shape, which results in a much better space utilization compared to a rod-shaped core which is adjacent to a high voltage terminal, so that thus also improves the electrical properties of the ignition transformer reach, as previously explained.
- each of the legs has at least one chamber of the bobbin.
- the core essentially forms a U-shape.
- a high space utilization can be realized, while still maintaining the advantages of a non-closed core, such as a rod-shaped core.
- the space area enclosed by the U-shaped core can be used for the provision of a high-voltage connection, thus creating a substantially "closed-off" space area in which high voltage is present.
- each leg of the substantially U-shaped core has at least one chamber of the coil body.
- a chamber of the bobbin arranged at a central region of the magnetic core has fewer winding layers than a chamber of the bobbin arranged at a peripheral region of the magnetic core. In this way, the number of turns can be increased as desired, or it can increase the wire cross-section used, since the non-linear configuration of the magnetic core at the periphery more winding space is available, but still total at least at one edge of Ignition transformer can give a substantially "planar" arrangement.
- this side of the ignition transformer can be arranged on a housing wall, when the ignition transformer, for example, in a Lamp base is installed, so that can accommodate a larger number of turns compared to a rod-shaped core.
- a lamp base for a gas discharge lamp having a housing portion with a first terminal region bounded by insulating material for receiving a high voltage contact of the discharge lamp and a second terminal portion for receiving a second contact of the discharge lamp.
- an ignition transformer is provided in the housing part, as described in the preceding embodiments or as it is illustrated in the following detailed description.
- the use of the ignition transformer with an open, non-linear magnetic core as opposed to a rod-shaped core or a toroidal core allows the provision of correspondingly fixed winding terminals, so that an automatic assembly of the ignition transformer together with other electronic components is possible.
- the nonlinear configuration of the magnetic core results in a greater degree of flexibility in designing the ignition transformer for a given geometry of the light socket, so that, for example, better electrical properties in the form of lower resistance, less scattering, etc. can be achieved.
- the number of windings of the secondary winding can be increased and / or the cross section of the core can be increased and / or the leakage flux can be reduced.
- the magnetic core is arranged such that the first terminal region is at least partially enclosed by the magnetic core.
- At least partially enclosed means that peripheral areas of the non-linear magnetic core are spaced closer to the first terminal area than would be the case for an equivalent peripheral area of a linear rod-shaped core with the same geometric configuration of the lamp cap. That is to say, the term “at least partially enclosed” denotes a "concave" shape of a side of the ignition transformer according to the invention facing the first connection region. Due to this geometric design, a better utilization of space within the housing part can be achieved without significantly affecting other conditions, such as the distance to the first and the second connection area.
- the housing part defines a floor plan with a length and a width, wherein the first connection area is arranged in the middle of the area defined by the length and the width.
- the length and the width are substantially the same. Due to this results in a very symmetrical arrangement of the lamp socket with respect to a discharge lamp receiving headlights, despite the substantially square plan shape, a high degree of customization of the ignition core transformer to the conditions within the housing part is possible. This is achieved by the fact that due to the non-linear configuration of the magnetic core, a certain degree of enclosure of the high voltage leading first terminal area is possible, so that due to this configuration can just achieve the previously enumerated improvements in the electrical behavior of the ignition transformer.
- an electronic assembly is provided in the housing part, which carries further components for controlling the ignition transformer. Due to the improved electrical properties of the Zündkemtransformators invention, for example, in terms of output voltage and / or electrical resistance and / or leakage flux and an improvement of the properties and / or lower complexity of the electronic assembly can be achieved. For example, due to an improved electrical behavior of the Zündkemtransformators the capacity and thus the size of a firing capacitor may be reduced. Thus, with a fixed geometric configuration of the luminaire base due to the space saved, an increase in dielectric strength due to longer distances or additional isolation regions and thus reliability can be achieved in addition to lower manufacturing costs.
- Fig. 2a shows in perspective and schematically an ignition transformer 200, which has a non-rectilinear shape.
- the ignition transformer 200 comprises a bobbin 201, which has a plurality of chambers 201a,..., 201e, in which corresponding windings or winding sections 202a,..., 202e are provided.
- the windings 202a, ..., 202e may, for example, represent winding sections of a secondary winding, since, in general, the number of turns of the secondary winding necessitates a correspondingly large ratio of primary turn number to secondary turn number due to the required high output voltage of a few 10 kV, for example of approximately 30 kV.
- a primary winding (not shown) may be provided for the ignition transformer 200, which is composed of a few turns, for example three turns, of conductive strip material suitably attached to the bobbin 201.
- the individual winding sections 202a, ..., 202e may represent respective primary and secondary windings required to operate a corresponding discharge lamp.
- corresponding ferrite plates 203 are provided at end regions of the ignition transformer 200, which serve to improve the stray flux and thus to reduce the effective electrical resistance of the secondary winding, ie in the illustrated example of the winding sections 202a,..., 202e.
- Fig. 2b shows the ignition transformer 200 in a schematic plan view, now also the open, non-rectilinear core 204 is shown.
- the core 204 has a substantially arcuate shape, wherein a radius of curvature corresponding to the geometric conditions with respect to the available space area, the cross section of the core 204, the required number of turns in the individual chambers 201 a, ..., 201 e is to be adapted.
- the ignition transformer 200 is shown as part of a lamp cap 250 having a housing part 251.
- a further connection region 254 Adjacent to the first connection region 253, a further connection region 254 is provided which, for example, receives a second connection contact, for example a ground contact, of the discharge light.
- the housing part 251 has a length 251 l and a width 251 b, which thus define a floor plan in which the ignition transformer 200 and other electronic component elements, which are collectively shown as an electronic assembly 255, are to be arranged in a suitable manner, so that given geometric dimensions the desired dielectric strength is achieved.
- the housing part 251 has a substantially square plan, wherein the first terminal portion 253 is arranged substantially centrally, so as to result in an extremely symmetrical positioning of the discharge lamp, not shown, to the light socket.
- a connection region 256 may be provided to supply necessary supply voltages of the electronic assembly 255 from outside, for example from an external ballast.
- the ignition transformer 200 is arranged such that the first connection region 253 is at least partially enclosed, ie a side of the ignition transformer 200 facing the connection region 253 has a substantially concave shape, so that in particular for the outer chambers 204a, 204b, 204d and 204e in comparison to a straight-line arrangement, such as in Fig. 1b shown results in a larger volume, which is available for winding.
- a greater number of winding layers may be provided, thereby providing greater number of turns and / or or a larger wire diameter and / or a larger cross section of the core 204 is applicable in comparison to the conventional straight ignition transformer 100.
- connection contacts for winding ends of the secondary winding, which in the example shown can be formed from the winding sections 202a, ..., 202d, and also the primary winding are provided as permanently mounted components, so that the ignition transformer 200 and the electronic assembly 255 can be introduced, for example, on a corresponding carrier or individually by automatic placement in the light socket 250.
- FIG. 12 shows the ignition transformer 200 according to another illustrative embodiment, in which deviation from the conventional rectilinear shape is accomplished by providing rectilinear portions which are staggered.
- the bobbin 201 and the winding sections 202a, ..., 202e produced in the respective chambers 201a, ..., 201e have a correspondingly stepped configuration.
- Fig. 2d shows the ignition transformer 200 from Fig. 2c in a plan view when it is mounted in the light socket 250.
- the step core 204 is shown, correspondingly rectilinear sections 204a,..., 204e leading to an overall substantially "concave" shape of the side of the ignition transformer 200 facing the connection region 253.
- transition areas 214 which in the illustrated embodiment have substantially the same cross section as the individual rectilinear portions 204a, ... 204e, such that the magnetic flux in the core 204 is substantially unaffected by the step-like configuration.
- the chambers 201a, ..., 201e of the bobbin 201 mounted on the respective rectilinear portions 204a, ..., 204e also have a rectilinear configuration so that the winding is more efficiently possible due to the lack of rounding ,
- a large number of turns can be applied, in particular in the peripheral regions of the core 204, so that if necessary, a correspondingly large wire diameter for the entire secondary winding, ie in the illustrated embodiments for the winding sections 202a, ..., 202e can be provided ,
- a displacement of the rectilinear portions in a plane perpendicular to the floor plan of Fig. 2d to provide, so for example, a displacement in the direction perpendicular to the plane from Fig. 2d in order to compensate, for example, for a varying thickness of the individual winding sections 202a,..., 202e for achieving a substantially planar bearing surface of the ignition transformer 200.
- Fig. 2e shows in perspective the ignition transformer 200 in a substantially L-shaped arrangement, wherein at least two legs are provided angled to each other.
- Fig. 2f shows the light socket 250 with the ignition transformer 200 from Fig. 2e when installed in plan view.
- the core 204 is shown as having at least one first leg 224a and one second leg 224b oriented toward each other to form a particular angle, in the present case substantially at right angles.
- a suitably formed transition region 224c is provided between the legs 224a and 224b so that the chambers 201a, ..., 201d can be disposed on the leg 224a while the chamber 201e is mounted on the leg 224b.
- a large effective length of the core 204 can be achieved, while at the same time a large total winding volume for the secondary winding is available, since, for example, the core cross-section can be made smaller by selecting a suitable material.
- Fig. 2g shows in perspective the ignition transformer 200 in a substantially U-shaped configuration, wherein one or more chambers of the bobbin 201 are provided on all three legs.
- Fig. 2h shows the corresponding top view of the lamp base 250, in which the core 204 is visible, which has a U-configuration by a first leg 234a, a second leg 234b and a third leg 234c.
- the individual legs 234a,..., 234c are selected in such a way that, on the one hand, the required winding volume is provided overall and, on the other hand, the connection region 253 is efficiently enclosed in order to achieve a high area utilization for the ignition transformer 200.
- five chambers 201a,..., 201e for the bobbin 201 are respectively shown, the chambers 201a,..., 201e being adapted to the respective core shape.
- boundary walls of the individual chambers of the rounding of the cores 204 in the FIGS. 2a to 2d adjusted so that they form a substantially planar support plane or system level when introducing the ignition transformer 200 in the housing part 251.
- other configurations are possible in which more or fewer than five chambers are provided.
- the dimension of the individual chambers in the flow direction may be different.
- core 204 may be modified so that the leg 224a also has a non-linear shape, and for example, a step-like offset receives similar to the configuration of the leg 224b in combination with the connecting portion 224c.
- the peripheral area corresponding to the chambers 201 a and 201 b may be made as a dislocation or a curve, as in the corresponding peripheral areas of the cores 204 in the Fig. 2b and 2d is shown
- Fig. 2i shows a perspective view of the ignition transformer 200 according to another embodiment.
- a field guide element 203a is provided which extends over at least part of the central region 204b, 204c, 204d of the core 204 in order to influence the field profile of the ignition transformer 200 in the desired manner.
- the field guide element extends 203a substantially from the end portion 204a to the other end portion 204e of the core 204, which is formed in a similar manner as described with reference to FIGS Fig. 2a and 2b is explained, so that substantially the entire central area 204b, 204c, 204d including the end portions 204a and 204e is "spanned".
- Fig. 2j shows a corresponding plan view of the lamp cap 250th
- Fig. 2k and 2l show a perspective view and a plan view of the ignition transformer 204 and the lamp socket 250 in another embodiment, in turn, the field guide element 203a is provided.
- the field guide element 203a is shown in a linear configuration, wherein substantially the entire length of the core 204, ie its central portion 204b, 204c, 204d including the end portions 204a, 204e, each of which may be rectilinear in sections, is continuous is overstretched.
- the field guide element 203a may also be constructed of two or more individual parts and / or the field guide element 203a may not necessarily extend over the entire central area 204b, 204c, 204d.
- the field guide element 203a may be disposed on a side other than the relative rectilinear side of the transformer 200, in which case non-rectilinear configurations for the field guide element 203a may also be advantageous.
- the field guide element 203a on an upper side and / or lower side which in the perspective views of Fig. 2i and 2k 200a and 200b, respectively, may be provided as a substantially linear element or as an element adapted to the shape of the core 204.
- Fig. 2m and 2n 11 show further illustrative embodiments of the light socket 250, wherein the field guide element 203a is approximately adapted to the shape of the regions 204a,..., 204e and is arranged between the connection region 253 and the core 204.
- the field guide element 203a is provided in each case in combination with the end plates 203a, to achieve an increased magnetic effect.
- the field guide element 203a may also be used without one or both end plates 203.
- a plurality of field guide elements 203a may be provided on two or more sides of the transformer 200 with appropriately adapted shapes so that the core 204 is at least partially enclosed by the plurality of field guide plates 203a.
- a combination of the results in Fig. 2m and 2y embodiments shown an improved shielding effect due to the two-sided arrangement of the field guide plates 203 a.
- the upper side 200a and / or the lower side 200b may be provided with corresponding field guide plates 203a.
- the thickness of the individual field guide plates 203a can then be selected to be correspondingly smaller, so that, if necessary, the space requirement does not rise significantly.
- the present invention by providing a non-rectilinear magnetic core, which nevertheless has a non-closed configuration, it is possible to adjust the electrical properties of the ignition transformer in an efficient manner at given geometrical conditions of a housing, for example by contrasting rod-shaped ignition transformers can realize an overall larger winding volume and / or a higher degree of flexibility in the selection of the core cross-section and / or an overall larger effective magnetic length.
- This greater degree of flexibility in the design of the ignition transformer makes it possible to improve the luminaire base in terms of functionality, reliability and safety for given geometrical dimensions.
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Abstract
Description
Die vorliegende Erfindung betrifft einen Zündtransformator sowie einen Leuchtensockel zur Aufnahme eines Zündtransformators für eine Entladungsleuchte, etwa eine Xenon-Leuchte für Scheinwerfer, wie sie beispielsweise im Fahrzeugbereich zunehmend verwendet werden.The present invention relates to an ignition transformer and a lamp socket for receiving an ignition transformer for a discharge lamp, such as a xenon lamp for headlights, as they are increasingly used for example in the vehicle sector.
Bei der Verwendung von Gasentladungsleuchten, etwa beispielsweise Xenon-Leuchten, insbesondere im Automobil und im allgemeinen Fahrzeugbereich oder auch in anderen Anwendungsbereichen, in denen kompakte Abmessungen der Ansteuerelektronik für die Entladungsleuchte erforderlich sind, beispielsweise beim Einsatz in mobilen Geräten, sind zum einen hohe Anforderungen hinsichtlich der Spannungsfestigkeit und der Zuverlässigkeit bei gleichzeitig kompakten Abmessungen erforderlich. Ferner sollen die zum Betreiben von Entladungsleuchten erforderlichen elektronischen Komponenten einschließlich des Zündtransformators kostengünstig und zuverlässig montierbar sein, so dass der Aufbau des Leuchtensockels sowie der elektronischen Komponenten und des Zündtransformators eine automatische Bestückung ermöglichen soll.When using gas discharge lamps, such as xenon lights, especially in the automotive and general vehicle sector or in other applications in which compact dimensions of the control electronics for the discharge lamp are required, for example when used in mobile devices, on the one hand high demands the dielectric strength and reliability required at the same time compact dimensions. Furthermore, the necessary for operating discharge lamps electronic components including the ignition transformer should be inexpensive and reliable mountable, so that the construction of the light socket and the electronic components and the ignition transformer to enable automatic assembly.
Bekanntlich sind insbesondere zum Zünden einer Entladungsleuchte relativ hohe Spannungen im Bereich von einigen 10 kiloVolt (kV), beispielsweise von etwa 30 kV, erforderlich, um eine zuverlässige Zündung des Gasgemisches in der Entladungskammer der Leuchte in Gang zu setzen. Die erforderliche hohe Zündspannung wird mittels eines Zündtransformators erzeugt, der seinerseits eine relativ geringe Primärspannung von etwa einigen 100 Volt von einer entsprechenden elektronischen Vorschalteinrichtung erhält und diese an dann in die hohe Zündspannung transformiert. Zu diesem Zwecke werden vielfach Ringkerntransformatoren eingesetzt, die jedoch auf Grund ihrer geometrischen Form und Eigenheiten eine automatische Bestückung äußerst schwierig gestalten, da entsprechende Anschlusselemente der Primär- und Sekundärwicklungen nicht in fest montierbarer Weise vorgesehen werden können. Eine Verbesserung in dieser Hinsicht ist beispielsweise in den Schriften
Angesichts dieser Sachlage besteht ein Bedarf für einen Zündtransformator und einen Leuchtensockel, die ein höheres Maß an Flexibilität bei der Auslegung der elektrischen Werte einer Zündeinrichtung zulassen und wobei gleichzeitig ein hohes Maß an Kompaktheit und Zuverlässigkeit gegeben ist.In view of this, there is a need for an ignition transformer and a light socket which allow a greater degree of flexibility in the design of the electrical values of an ignition device, while providing a high degree of compactness and reliability.
Erfindungsgemäß wird die obige Aufgabe gelöst durch einen Zündtransformator für eine Gasentladungsleuchte, wobei der Zündtransformator einen offenen, nicht-geradlinigen magnetischen Kern und einen auf dem magnetischen Kern aufgebrachten Spulenkörper mit mehreren Kammern zur Aufnahme einer Sekundärwicklung aufweist.According to the invention, the above object is achieved by an ignition transformer for a gas discharge lamp, wherein the ignition transformer has an open, non-rectilinear magnetic core and an applied on the magnetic core bobbin with a plurality of chambers for receiving a secondary winding.
Auf Grund dieser erfindungsgemäßen Ausbildung des Zündtransformators lässt sich die offene Bauweise beibehalten, die, im Gegensatz zu einem geschlossenen Ringkern, das Vorsehen fest montierbarer Anschlussbereiche für die entsprechenden Wicklungsenden ermöglicht und dabei gleichzeitig eine automatische Bestückung unterstützt. Hierbei ist der Begriff "offen" so zu verstehen, dass der magnetische Kern keinen in sich geschlossenen magnetischen Kreis bildet. Der Begriff "nicht-geradlinig" soll dabei alle von der geradlinigen Form abweichenden Kerngeometrien beschreiben, d.h. eine geradlinige Form soll als eine Kernform verstanden werden, in der eine einzige Richtung zur Definition einer Längsachse, die im wesentlichen der durch die Bewicklung definierten Flussrichtung entspricht, ausreichend ist. Damit ist eine nicht-geradlinige Form durch mindestens zwei unterschiedliche Richtungen der Flussrichtung definiert. Insbesondere ist der Bergriff "nicht-geradlinig" im Hinblick auf die Gesamtform des Kerns zu verstehen, so dass beispielsweise geradlinige Abschnitte vorhanden sein können, wobei jedoch die Gesamtkonfiguration von der obigen geradlinigen Geometrie abweicht.Due to this design of the ignition transformer according to the invention, the open design can be maintained, which, in contrast to a closed ring core, allows the provision of permanently mountable connection areas for the corresponding coil ends and at the same time supports automatic assembly. Here, the term "open" should be understood to mean that the magnetic core does not form a self-contained magnetic circuit. The term "non-rectilinear" is intended to describe all core geometries that deviate from the rectilinear form, i. a rectilinear shape is to be understood as a core shape in which a single direction is sufficient to define a longitudinal axis substantially corresponding to the direction of flow defined by the winding. Thus, a non-rectilinear shape is defined by at least two different directions of the flow direction. In particular, the term "non-rectilinear" with respect to the overall shape of the core is to be understood, so that, for example, straight sections may be present, but the overall configuration deviates from the above straight-line geometry.
Des weiteren kann auf Grund der nicht-geradlinigen Ausbildung des magnetischen Kerns eine entsprechende Anpassung der Kemform und damit des gesamten Zündtransformators an die geometrischen Gegebenheiten eines Leuchtensockels für die Gasentladungsleuchte stattfinden, so dass insbesondere bei der Anwendung für Entladungsleuchten im mobilen Bereich, beispielsweise bei Fahrzeugen, etc., ein hohes Maß an Raumausnutzung und damit Kompaktheit bei gleichzeitig verbesserten elektrischen Eigenschaften im Vergleich zu einem geradlinigen Stabkemtransformator gegeben ist.Furthermore, due to the non-rectilinear design of the magnetic core, a corresponding adaptation of the core shape and thus of the entire ignition transformer to the geometric conditions of a light socket for the gas discharge lamp take place, so that in particular in the application of discharge lamps in the mobile field, for example in vehicles, etc., a high degree in terms of space utilization and thus compactness with simultaneously improved electrical properties compared to a rectilinear rod core transformer is given.
In einer weiteren vorteilhaften Ausführungsform ist der magnetische Kern bogenförmig ausgebildet. Auf Grund dieser bogenförmigen Formgebung ist eine effiziente Anpassung elektrischer Eigenschaften, beispielsweise der Windungszahl und dergleichen möglich, da insbesondere in peripheren Bereichen bei gegebenem Kernquerschnitt eine höhere Anzahl an Windungslagen im Vergleich zu einem geradlinigen Stabkem aufgebracht werden kann.In a further advantageous embodiment, the magnetic core is arcuate. Due to this arcuate shape, an efficient adaptation of electrical properties, such as the number of turns and the like is possible, since a higher number of winding layers compared to a straight rod core can be applied, especially in peripheral regions for a given core cross-section.
In einer bevorzugten Ausführungsform weist der magnetische Kern mehrere geradlinige Abschnitte auf, die zueinander versetzt angeordnet sind. Durch das Vorsehen mehrerer geradliniger Kernabschnitte, die in ihrer Gesamtheit jedoch weiterhin eine nicht geradlinige Form des offenen Magnetkerns ergeben, lassen sich in besonders effizienter Weise Wicklungen in automatisierter Form aufbringen, da die Verhältnisse beim Bewickeln der entsprechenden geradlinigen Abschnitte den Verhältnissen beim Bewickeln eines stabförmigen geradlinigen Kerns entsprechen. So kann beispielsweise aufgrund des Fehlens einer Rundung in entsprechenden Kammern eine größere Anzahl von Windungen aufgebracht und/oder ein größerer Drahtdurchmesser verwendet werden im Vergleich zu einer Kammer mit Rundung.In a preferred embodiment, the magnetic core has a plurality of rectilinear sections, which are arranged offset to one another. However, by providing a plurality of straight core portions, which in their entirety still provide a non-linear shape of the open magnetic core, windings can be applied in an automated manner in a particularly efficient manner, since the ratios in winding the respective rectilinear portions correspond to the conditions when winding a rod-shaped linear Kerns correspond. For example, due to the lack of rounding in corresponding chambers, a greater number of turns may be applied and / or a larger wire diameter may be used compared to a chamber with roundness.
In einer weiteren vorteilhaften Ausbildung weisen Übergangsbereiche des magnetischen Kerns, die zwischen den geradlinigen Abschnitten vorgesehen sind, und die geradlinigen Abschnitte im Wesentlichen den gleichen Querschnitt aufweisen. Mittels dieser Konfiguration lässt sich ein erforderlicher Mindestquerschnitt des magnetischen Kerns verwirklichen, da sowohl die geradlinigen Abschnitte als auch die Übergangsbereiche den erforderlichen Querschnitt aufweisen, wobei dennoch auf Grund der versetzten Anordnung ein hohes Maß an Flexibilität bei der Formanpassung des Zündtransformators gegeben ist. Beispielsweise kann die Abmessung der Übergangsbereiche in Flussrichtung relativ klein gehalten werden, so dass diese Übergangsbereiche ohne Bewicklung vorgesehen werden können, so dass insgesamt ein Verlust an Wicklungsraum gering bleibt.In a further advantageous embodiment, transition areas of the magnetic core, which are provided between the rectilinear portions, and the rectilinear portions have substantially the same cross-section. By means of this configuration, a required minimum cross-section of the magnetic core can be realized, since both the rectilinear portions and the transition regions have the required cross-section, yet due to the staggered arrangement there is a high degree of flexibility in the shape matching of the ignition transformer. For example, the dimension of the transition regions in the flow direction can be kept relatively small, so that these transition regions can be provided without winding, so that overall a loss of winding space remains low.
In einer weiteren bevorzugten Ausführungsform ist die versetzte Anordnung der mehreren geradlinigen Abschnitte in einer einzelnen definierten Ebene ausgebildet. Demzufolge kann die effektive Verlängerung des magnetischen Kerns im Vergleich zu einem Stabkem in einer Ebene liegend bewerkstelligt werden, so dass sich in der senkrecht zu dieser Ebene liegenden Richtung weiterhin ein hohes Maß an Kompaktheit aufrecht erhalten lässt. Beispielsweise lässt sich ein gewünschtes Maß an Rundung in der definierten Ebene einstellen, indem die Anzahl, die Abmessung und der Versetzungsgrad der einzelnen Abschnitte entsprechend gewählt wird.In a further preferred embodiment, the staggered arrangement of the plurality of rectilinear sections is formed in a single defined plane. As a result, the effective elongation of the magnetic core can be accomplished in a plane compared to a rod core so that a high degree of compactness can still be maintained in the direction perpendicular to this plane. For example, a desired degree of rounding in the defined plane can be set by selecting the number, the dimension and the degree of dislocation of the individual sections.
In anderen Ausführungsformen können mehrere der geradlinigen Abschnitte in unterschiedlichen Ebenen versetzt sein, so dass gegebenenfalls eine Anpassung der effektiven Länge des magnetischen Kerns erfolgen kann, ohne dabei die Maße eines Grundrisses eines entsprechenden Leuchtensockels zu überschreiten, sofern beispielsweise in der Höhenrichtung eine gewisse Toleranz verfügbar ist.In other embodiments, a plurality of the rectilinear portions may be staggered in different planes so that, if desired, the effective length of the magnetic core may be adjusted without exceeding the dimensions of a plan of a corresponding luminaire pedestal, for example, if some tolerance is available in the elevation direction ,
In einer weiteren bevorzugten Ausführungsform sind mehrere geradlinige Abschnitte so vorgesehen, dass mindestens zwei der geradlinigen Abschnitte zueinander gewinkelt angeordnete Schenkel des magnetischen Kerns bilden. Eine derartige geometrische Gestaltung des magnetischen Kerns lässt eine effiziente Anpassung an vorgegebene geometrische Verhältnisse in einem Gehäuse zur Aufnahme des Zündtransformators zu.In a further preferred embodiment, a plurality of rectilinear sections are provided such that at least two of the rectilinear sections form legs of the magnetic core arranged at an angle to one another. Such a geometric design of the magnetic core allows for an efficient adaptation to predetermined geometrical conditions in a housing for accommodating the ignition transformer.
In einer vorteilhaften Ausführungsform bilden die Schenkel im Wesentlichen einen rechten Winkel. Beim Vorsehen zweier derartiger Schenkel ergibt sich eine im Wesentlichen L-förmige Kerngestalt, wodurch sich im Vergleich zu einem stabförmigen Kern, der benachbart zu einem Hochspannungsanschluss anzuordnen ist, eine deutlich bessere Raumausnutzung ergibt, so dass damit auch eine Verbesserung der elektrischen Eigenschaften des Zündtransformators zu erreichen sind, wie dies zuvor bereits erläutert ist.In an advantageous embodiment, the legs form substantially a right angle. The provision of two such legs results in a substantially L-shaped core shape, which results in a much better space utilization compared to a rod-shaped core which is adjacent to a high voltage terminal, so that thus also improves the electrical properties of the ignition transformer reach, as previously explained.
In einer weiteren vorteilhaften Ausführungsform weist jeder der Schenkel mindestens eine Kammer des Spulenkörpers auf. Mit dieser Anordnung kann in effizienter Weise der für die erforderliche Windungszahl benötigte Wickelraum geschaffen werden, wobei sich gleichzeitig zumindest zwischen einigen der Wicklungsabschnitte ein relativ großer Abstand und damit eine hohe Spannungsfestigkeit erreichen lässt.In a further advantageous embodiment, each of the legs has at least one chamber of the bobbin. With this arrangement, the winding space required for the required number of turns can be efficiently provided, wherein At the same time, at least between some of the winding sections can achieve a relatively large distance and thus a high dielectric strength.
In einer weiteren vorteilhaften Ausführungsform bildet der Kern im Wesentlichen eine U-Form. Mit dieser geometrischen Konfiguration lässt sich eine hohe Raumausnutzung verwirklichen, wobei sich dennoch die Vorteile eines nicht geschlossenen Kernes, etwa eines stabförmigen Kernes, beibehalten lassen. Insbesondere kann der von dem U-förmigen Kern eingeschlossene Raumbereich für das Vorsehen eines Hochspannungsanschlusses genutzt werden, so dass damit ein im Wesentlichen "abgeschlossener" Raumbereich geschaffen wird, in welchem Hochspannung vorhanden ist.In a further advantageous embodiment, the core essentially forms a U-shape. With this geometric configuration, a high space utilization can be realized, while still maintaining the advantages of a non-closed core, such as a rod-shaped core. In particular, the space area enclosed by the U-shaped core can be used for the provision of a high-voltage connection, thus creating a substantially "closed-off" space area in which high voltage is present.
In einer weiteren vorteilhaften Ausführungsform weist jeder Schenkel des im Wesentlichen U-förmigen Kerns mindestens eine Kammer des Spulenkörpers auf. Wie bereits zuvor erwähnt ist, lässt sich damit der benötigte Wickelraum schaffen, wobei gleichzeitig auch ein großer Abstand zwischen zumindest einigen benachbarten auf unterschiedlichen Schenkeln angeordneten SpuJenkammern verwirklichbar ist.In a further advantageous embodiment, each leg of the substantially U-shaped core has at least one chamber of the coil body. As already mentioned above, the required winding space can thus be created, wherein at the same time a large distance between at least some adjacent spool chambers arranged on different legs can be realized.
In einer weiteren bevorzugten Ausführungsform weist eine an einem zentralen Bereich des magnetischen Kerns angeordnete Kammer des Spulenkörpers weniger Wicklungslagen auf als eine an einem peripheren Bereich des magnetischen Kerns angeordnete Kammer des Spulenkörpers. Auf diese Weise lässt sich die Anzahl der Windungen in gewünschter Weise erhöhen oder es lässt sich der verwendete Drahtquerschnitt vergrößern, da durch die nicht-geradlinige Konfiguration des magnetischen Kerns an der Peripherie mehr Wicklungsraum zur Verfügung steht, wobei sich dennoch insgesamt zumindest an einem Rand des Zündtransformators eine im Wesentlichen "planare" Anordnung ergeben kann. Beispielsweise kann bei einem Bogenkem oder einem Stufen-Kern die Anzahl der Windungslagen und damit die Anzahl der Windungen von innen nach außen so zunehmen, dass an dem äußeren Rand des bogenförmigen oder gestuften Kerns auf Grund der zunehmenden Lagenanzahl ein im Wesentlichen gerader Abschluss gebildet wird. Somit kann diese Seite des Zündtransformators an einer Gehäusewandung angeordnet werden, wenn der Zündtransformator beispielsweise in einem Leuchtensockel eingebaut ist, so dass sich im Vergleich zu einem stabförmigen Kern eine größere Anzahl an Windungen unterbringen lässt.In a further preferred embodiment, a chamber of the bobbin arranged at a central region of the magnetic core has fewer winding layers than a chamber of the bobbin arranged at a peripheral region of the magnetic core. In this way, the number of turns can be increased as desired, or it can increase the wire cross-section used, since the non-linear configuration of the magnetic core at the periphery more winding space is available, but still total at least at one edge of Ignition transformer can give a substantially "planar" arrangement. For example, in the case of a bow core or a stepped core, the number of turn layers and thus the number of turns from the inside to the outside may increase such that a substantially straight end is formed at the outer edge of the arcuate or stepped core due to the increasing number of layers. Thus, this side of the ignition transformer can be arranged on a housing wall, when the ignition transformer, for example, in a Lamp base is installed, so that can accommodate a larger number of turns compared to a rod-shaped core.
Gemäß einem weiteren Aspekt der vorliegenden Erfindung wird ein Leuchtensockel für eine Gasentladungsleuchte bereitgestellt, wobei der Leuchtensockel einen Gehäuseteil mit einem durch Isolationsmaterial begrenzten ersten Anschlussbereich zur Aufnahme eines Hochspannungskontakts der Entladungsleuchte und einen zweiten Anschlussbereich zur Aufnahme eines zweiten Kontakts der Entladungsleuchte aufweist. Ferner ist in dem Gehäuseteil ein Zündtransformator vorgesehen, wie er in den vorhergehenden Ausführungsformen beschrieben ist oder wie er in der nachfolgenden detaillierten Beschreibung dargestellt ist.According to another aspect of the present invention, there is provided a lamp base for a gas discharge lamp, the lamp socket having a housing portion with a first terminal region bounded by insulating material for receiving a high voltage contact of the discharge lamp and a second terminal portion for receiving a second contact of the discharge lamp. Furthermore, an ignition transformer is provided in the housing part, as described in the preceding embodiments or as it is illustrated in the following detailed description.
Wie eingangs bereits erwähnt ist, ist insbesondere für Gasentladungsleuchten im Bereich der Fahrzeugindustrie, bei mobilen Anwendungen, und dergleichen eine äußerst kompakte Anordnung der Zündeinrichtung für die Gasentladungsleuchte bei gleichzeitig automatisierbarer Bestückung im Hinblick auf die Kostenentwicklung und die Zuverlässigkeit äußerst vorteilhaft. Die Verwendung des Zündtransformators mit offenem, nicht-geradlinigen magnetischen Kern im Gegensatz zu einem stabförmigen Kern oder einem Ringkern erlaubt das Vorsehen entsprechend fest montierter Wicklungsanschlüsse, so dass eine automatische Bestückung des Zündtransformators zusammen mit weiteren elektronischen Komponenten möglich ist. Des weiteren ergibt sich aus der nicht-geradlinigen Konfiguration des magnetischen Kerns ein höheres Maß an Flexibilität bei der Auslegung des Zündtransformators bei vorgegebener Geometrie des Leuchtensockels, so dass beispielsweise bessere elektrische Eigenschaften in Form eines geringeren Widerstands, einer geringerer Streuung, etc. erreichbar ist. So kann beispielsweise bei vorgegebener geometrischer Konfiguration des Gehäuses im Vergleich zu einem stabförmigen Zündtransformator die Anzahl der Wicklungen der Sekundärwicklung erhöht und/oder der Querschnitt des Kerns vergrößert und/oder der Streufluss reduziert werden.As already mentioned, in particular for gas discharge lamps in the field of the automotive industry, in mobile applications, and the like, an extremely compact arrangement of the ignition device for the gas discharge lamp with simultaneously automatisierbarer assembly in terms of cost and reliability extremely advantageous. The use of the ignition transformer with an open, non-linear magnetic core as opposed to a rod-shaped core or a toroidal core allows the provision of correspondingly fixed winding terminals, so that an automatic assembly of the ignition transformer together with other electronic components is possible. Furthermore, the nonlinear configuration of the magnetic core results in a greater degree of flexibility in designing the ignition transformer for a given geometry of the light socket, so that, for example, better electrical properties in the form of lower resistance, less scattering, etc. can be achieved. For example, given a given geometric configuration of the housing in comparison to a rod-shaped ignition transformer, the number of windings of the secondary winding can be increased and / or the cross section of the core can be increased and / or the leakage flux can be reduced.
Vorzugsweise ist der magnetische Kern so angeordnet, dass der erste Anschlussbereich von dem magnetischen Kern zumindest teilweise umschlossen wird. Hierbei ist der Begriff "zumindest teilweise umschlossen" so zu verstehen, dass periphere Bereiche des nicht-geradlinigen magnetischen Kerns einen kleineren Abstand zu dem ersten Anschlussbereich aufweisen als dies für einen äquivalenten peripheren Bereich eines geradlinigen stabförmigen Kerns bei sonst gleicher geometrischer Konfiguration des Leuchtensockels der Fall wäre. D. h., der Begriff "zumindest teilweise umschlossen" bezeichnet eine "konkave" Form einer dem ersten Anschlussbereich zugewandten Seite des erfindungsgemäßen Zündtransformators. Auf Grund dieser geometrischen Ausbildung lässt sich eine bessere Raumausnutzung innerhalb des Gehäuseteils erreichen, ohne dass damit andere Gegebenheiten, etwa der Abstand zu dem ersten und dem zweiten Anschlussbereich, wesentlich beeinflusst werden. Insbesondere lässt sich auf Grund der Anordnung des offenen, nicht-geradlinigen magnetischen Kerns in dem Gehäuseteil bei sonst gleichen geometrischen Konfigurationen eine Verbesserung des elektrischen Verhaltens erreichen, da z. B. das Streuverhalten und/oder der elektrische Widerstand und/oder die Ausgangsspannung verbessert werden können.Preferably, the magnetic core is arranged such that the first terminal region is at least partially enclosed by the magnetic core. Here is the term "At least partially enclosed" means that peripheral areas of the non-linear magnetic core are spaced closer to the first terminal area than would be the case for an equivalent peripheral area of a linear rod-shaped core with the same geometric configuration of the lamp cap. That is to say, the term "at least partially enclosed" denotes a "concave" shape of a side of the ignition transformer according to the invention facing the first connection region. Due to this geometric design, a better utilization of space within the housing part can be achieved without significantly affecting other conditions, such as the distance to the first and the second connection area. In particular, can be due to the arrangement of the open, non-linear magnetic core in the housing part with otherwise the same geometric configurations achieve an improvement in the electrical behavior, since z. B. the scattering behavior and / or the electrical resistance and / or the output voltage can be improved.
In einer weiteren bevorzugten Ausführungsform definiert das Gehäuseteil einen Grundriss mit einer Länge und einer Breite, wobei der erste Anschlussbereich in der Mitte der durch die Länge und die Breite definierten Fläche angeordnet ist. Mit dieser Ausbildung des Leuchtensockels ergibt sich eine äußerst kompakte Bauweise, die insbesondere eine zentrale Montage an einem Scheinwerfer, beispielsweise einem Fahrzeugscheinwerfer, ermöglicht.In a further preferred embodiment, the housing part defines a floor plan with a length and a width, wherein the first connection area is arranged in the middle of the area defined by the length and the width. With this design of the light socket results in an extremely compact design, which in particular allows central mounting on a headlight, such as a vehicle headlight.
Vorteilhafterweise sind die Länge und die Breite im Wesentlichen gleich. Auf Grund dessen ergibt sich eine sehr symmetrische Anordnung des Leuchtensockels in Bezug auf einen die Entladungsleuchte aufnehmenden Scheinwerfer, wobei trotz der im Wesentlichen quadratischen Grundrissform ein hohes Maß an Anpassung des Zündkerntransformators an die Gegebenheiten innerhalb des Gehäuseteils möglich ist. Dies wird eben dadurch erreicht, dass auf Grund der nicht-geradlinigen Konfiguration des magnetischen Kerns ein gewisses Maß an Umschließung des hochspannungsführenden ersten Anschlussbereichs möglich ist, so dass sich auf Grund dieser Konfiguration eben die zuvor aufgezählten Verbesserungen des elektrischen Verhaltens des Zündtransformators erreichen lassen.Advantageously, the length and the width are substantially the same. Due to this results in a very symmetrical arrangement of the lamp socket with respect to a discharge lamp receiving headlights, despite the substantially square plan shape, a high degree of customization of the ignition core transformer to the conditions within the housing part is possible. This is achieved by the fact that due to the non-linear configuration of the magnetic core, a certain degree of enclosure of the high voltage leading first terminal area is possible, so that due to this configuration can just achieve the previously enumerated improvements in the electrical behavior of the ignition transformer.
In einer weiteren vorteilhaften Ausführungsform ist in dem Gehäuseteil eine elektronische Baugruppe vorgesehen, die weitere Komponenten zur Ansteuerung des Zündtransformators trägt. Auf Grund der verbesserten elektrischen Eigenschaften des erfindungsgemäßen Zündkemtransformators, beispielsweise im Hinblick auf Ausgangsspannung und/oder elektrischen Widerstand und/oder Streufluss kann auch eine Verbesserung der Eigenschaften und/oder eine geringere Komplexität der elektronischen Baugruppe erreicht werden. Beispielsweise kann auf Grund eines verbesserten elektrischen Verhaltens des Zündkemtransformators die Kapazität und damit die Baugröße eines Zündkondensators gegebenenfalls verringert werden. Damit lässt sich bei einer fest vorgegebenen geometrischen Konfiguration des Leuchtensockels auf Grund des eingesparten Platzes eine Erhöhung der Spannungsfestigkeit durch größere Abstände oder zusätzliche Isoliergebiete und damit der Zuverlässigkeit zusätzlich zu geringeren Fertigungskosten erreichen.In a further advantageous embodiment, an electronic assembly is provided in the housing part, which carries further components for controlling the ignition transformer. Due to the improved electrical properties of the Zündkemtransformators invention, for example, in terms of output voltage and / or electrical resistance and / or leakage flux and an improvement of the properties and / or lower complexity of the electronic assembly can be achieved. For example, due to an improved electrical behavior of the Zündkemtransformators the capacity and thus the size of a firing capacitor may be reduced. Thus, with a fixed geometric configuration of the luminaire base due to the space saved, an increase in dielectric strength due to longer distances or additional isolation regions and thus reliability can be achieved in addition to lower manufacturing costs.
Weitere Vorteile, Merkmale und Ausführungsformen der vorliegenden Erfindung sind in angefügten Patentansprüchen definiert und gehen auch aus der folgenden detaillierten Beschreibung hervor, wenn diese mit Bezug zu den begleitenden Zeichnungen studiert wird. In den Zeichnungen zeigen:
-
Fig. 1a bis 1d eine perspektivische Ansicht eines konventionellen stabförmigen Zündtransformators bzw. eine Draufsicht auf einen konventionellen Leuchtensockel mit dem konventionellen stabförmigen Zündtransformator, -
Fig. 2a ,c ,e ,g ,i ,k perspektivische Ansichten anschaulicher Ausführungsformen eines erfindungsgemäßen Zündtransformators mit offenem, nicht-geradlinigen magnetischen Kern, -
Fig. 2b ,d ,f ,h ,j ,l jeweils Draufsichten auf Leuchtensockel mit entsprechenden Zündtransformatoren derFig. 2a ,c ,d ,g ,i ,k gemäß anschaulicher Ausführungsformen der vorliegenden Erfindung und -
Fig. 2m und 2n jeweils Draufsichten auf einen Leuchtensockel mit nicht-geradlinigen Kern mit nicht-geradliniger Feldführungsplatte.
-
Fig. 1a to 1d a perspective view of a conventional rod-shaped ignition transformer or a plan view of a conventional light socket with the conventional rod-shaped ignition transformer, -
Fig. 2a .c .e .G .i .k perspective views of illustrative embodiments of an ignition transformer according to the invention with an open, non-rectilinear magnetic core, -
Fig. 2b .d .f .H .j .l each plan views of the lamp base with appropriate ignition transformers ofFig. 2a .c .d .G .i .k according to illustrative embodiments of the present invention and -
Fig. 2m and 2n each plan views of a light socket with non-rectilinear core with non-rectilinear field guide plate.
Wie aus
Wie eingangs bereits erwähnt ist, können auf Grund der "offenen" Konfiguration des Kerns 204 entsprechende Anschlusskontakte (nicht gezeigt) für Wicklungsenden der Sekundärwicklung, die in dem dargestellten Beispiel aus den Wicklungsabschnitten 202a, ..., 202d aufgebaut ist, und auch der Primärwicklung als fest montierte Komponenten vorgesehen werden, so dass der Zündtransformator 200 sowie die elektronische Baugruppe 255 beispielsweise auf einem entsprechenden Träger oder einzeln durch automatische Bestückung in den Leuchtensockel 250 eingeführt werden können.As already mentioned, due to the "open" configuration of the
In den zuvor beschriebenen Ausführungsformen sind jeweils fünf Kammern 201a,...,201e für den Spulenkörper 201 gezeigt, wobei die Kammern 201 a, ..., 201 e der jeweiligen Kemform angepasst sind. Beispielsweise sind Begrenzungswände der einzelnen Kammern der Rundung der Kerne 204 in den
Des weiteren können die Merkmale der einzelnen Ausführungsformen miteinander kombiniert werden. So kann in einer Ausführungsform der in den
In den Ausführungsformen, die mit Bezug zu den
In der vorliegenden Erfindung wird durch das Vorsehen eines nicht-geradlinigen magnetischen Kerns, der aber dennoch eine nicht geschlossene Konfiguration aufweist, die Möglichkeit geschaffen, die elektrischen Eigenschaften des Zündtransformators in effizienter Weise bei vorgegebenen geometrischen Verhältnissen eines Gehäuses anzupassen, indem sich beispielsweise im Gegensatz zu stabförmigen Zündtransformatoren ein insgesamt größeres Wickelvolumen und/oder ein höheres Maß an Flexibilität bei der Auswahl des Kernquerschnitts und/oder eine insgesamt größere effektive magnetische Länge verwirklichen lässt. Durch dieses größere Maß an Flexibilität bei der Gestaltung des Zündtransformators lässt sich der Leuchtensockel bei vorgegebenen geometrischen Abmessungen hinsichtlich der Funktionalität, der Zuverlässigkeit und der Sicherheit verbessern.In the present invention, by providing a non-rectilinear magnetic core, which nevertheless has a non-closed configuration, it is possible to adjust the electrical properties of the ignition transformer in an efficient manner at given geometrical conditions of a housing, for example by contrasting rod-shaped ignition transformers can realize an overall larger winding volume and / or a higher degree of flexibility in the selection of the core cross-section and / or an overall larger effective magnetic length. This greater degree of flexibility in the design of the ignition transformer makes it possible to improve the luminaire base in terms of functionality, reliability and safety for given geometrical dimensions.
Claims (19)
- Ignition transformer (200) for a gas discharge lamp, comprising
an open, non-linear, magnetic core (204) which comprises a plurality of linear sections (204a-204e) which are arranged mutually offset, and
a bobin body (201) attached to the magnetic core and comprising a plurality of chambers (201 a-201 e) for receiving a secondary winding (202), a chamber of the bobin body (201) arranged on a central region of the magnetic core (204) comprising fewer winding layers (202a-202e) than a chamber of the bobin body arranged on a peripheral region of the magnetic core. - Ignition transformer (200) according to claim 1, wherein the magnetic core (204) comprises an arc-shaped region.
- Ignition transformer (200) according to claim 2, wherein the magnetic core (204) is arc-shaped.
- Ignition transformer (200) according to claim 1, wherein transition regions of the magnetic core (204), which are provided between the linear sections, and the linear sections have substantially the same cross-section.
- Ignition transformer (200) according to claim 3 or 4, wherein the offset arrangement of the plurality of linear sections is formed in an individually defined plane.
- Ignition transformer (200) according to any one of claims 1 to 5, wherein a plurality of linear sections (204a-204e) is provided such that at least two of the linear sections form legs (224) that are arranged angled to each other.
- Ignition transformer (200) according to claim 6, wherein the legs (224) form substantially a right angle.
- Ignition transformer (200) according to claim 6 or 7, wherein each of the legs (224) comprises at least one chamber of the bobin body (201).
- Ignition transformer (200) according to claim 7, wherein the core (204) substantially forms a U shape.
- Ignition transformer (200) according to claim 9, wherein each of the legs (224) of the substantially U-shaped core (204) comprises at least one chamber of the bobin body (201).
- Ignition transformer (200) according to any one of claims 1 to 10, wherein a soft magnetic end plate (203) is also provided on at least one end of the non-linear core (204).
- Ignition transformer (200) according to any one of claims 1 to 11, wherein a field-guiding element (203a) is also provided which extends along at least part of a central section of the core (204).
- Ignition transformer (200) according to claim 11, wherein the field-guiding element (203a) extends continuously from one end section of the core (204) to the other end section.
- Ignition transformer (200) according to claim 12 or 13, wherein the field-guiding element (203a) is non-linear and the shape of the core (204) is substantially reproduced.
- Lamp base (250) for a gas discharge lamp, comprising
a housing part having a first connecting region, delimited by insulating material, for receiving a high-voltage contact of the discharge lamp, and a second connecting region for receiving a second contact of the discharge lamp and
an ignition transformer (200), arranged in the housing part, according to any one of claims 1 to 14. - Lamp base (250) according to claim 15, wherein the magnetic core (204) is arranged in such a way that the first connecting region is at least partially surrounded by the magnetic core.
- Lamp base (250) according to claim 15 or 16, wherein the housing part defines an outline with a length and a width and the first connecting region is arranged in the middle of the area defined by the length and width.
- Lamp base (250) according to claim 17, wherein the length and width are substantially identical.
- Lamp base (250) according to any one of claims 15 to 18, which also comprises an electronic unit arranged in the housing part.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE200520007484 DE202005007484U1 (en) | 2005-05-11 | 2005-05-11 | Ignition transformer and light socket for a discharge lamp |
PCT/EP2005/011588 WO2006119799A1 (en) | 2005-05-11 | 2005-10-28 | Starter transformer and lamp socket for a discharge lamp |
Publications (2)
Publication Number | Publication Date |
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EP1880586A1 EP1880586A1 (en) | 2008-01-23 |
EP1880586B1 true EP1880586B1 (en) | 2012-05-30 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05799804A Not-in-force EP1880586B1 (en) | 2005-05-11 | 2005-10-28 | Starter transformer and lamp socket for a discharge lamp |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1880586B1 (en) |
DE (1) | DE202005007484U1 (en) |
ES (1) | ES2390280T3 (en) |
WO (1) | WO2006119799A1 (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006034373A1 (en) * | 2006-04-21 | 2007-10-25 | Tridonicatco Gmbh & Co. Kg | Overlap ignitor for a ballast |
DE112006003946B4 (en) * | 2006-12-20 | 2017-10-26 | SUMIDA Components & Modules GmbH | Inductive component with a bobbin with integrated winding |
DE102007063690B4 (en) * | 2007-05-31 | 2017-10-26 | SUMIDA Components & Modules GmbH | ignition module |
DE102007025421B4 (en) * | 2007-05-31 | 2009-07-30 | Vogt Electronic Components Gmbh | Ignition transformer and ignition module |
US8193891B2 (en) | 2008-02-20 | 2012-06-05 | Koninklijke Philips Electronics N.V. | High voltage transformer with space-saving primary windings |
DE102008056931B4 (en) | 2008-11-12 | 2012-11-08 | Vogt Electronic Components Gmbh | Holder for a gas discharge lamp, light source and headlights |
DE102009009033B4 (en) | 2009-02-16 | 2020-11-12 | SUMIDA Components & Modules GmbH | Housing for an ignition transformer, transformer device and electronic ballast for a gas discharge lamp |
DE102009012089A1 (en) | 2009-03-06 | 2010-09-09 | Hella Kgaa Hueck & Co. | Igniter for a high-pressure gas discharge lamp |
DE102009012090A1 (en) | 2009-03-06 | 2010-09-09 | Hella Kgaa Hueck & Co. | Ignition transformer for a high-pressure gas discharge lamp |
DE102009012088A1 (en) | 2009-03-06 | 2010-09-09 | Hella Kgaa Hueck & Co. | Igniter for a high-pressure gas discharge lamp |
DE102009012087A1 (en) | 2009-03-06 | 2010-09-09 | Hella Kgaa Hueck & Co. | Ignition transformer for a high-pressure gas discharge lamp |
DE102009033068B4 (en) * | 2009-07-03 | 2019-01-17 | SUMIDA Components & Modules GmbH | Control module for gas discharge lamp |
DE102014214433A1 (en) * | 2014-07-23 | 2016-01-28 | SUMIDA Components & Modules GmbH | High voltage small transformer with U-shaped core |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5959407A (en) * | 1996-12-07 | 1999-09-28 | Ngk Spark Plug Co., Ltd. | Vehicle lighting drive apparatus |
DE19751548C2 (en) * | 1997-11-20 | 2001-03-15 | Vogt Electronic Ag | Ignition transformer for a discharge lamp |
US6232728B1 (en) * | 1998-05-08 | 2001-05-15 | Denso Corporation | Discharge lamp apparatus |
WO2000018195A1 (en) * | 1998-09-22 | 2000-03-30 | Mitsubishi Denki Kabushiki Kaisha | Discharge lamp lighting device |
FR2795281B1 (en) * | 1999-06-21 | 2001-08-17 | Valeo Vision | IMPROVEMENTS IN MODULES OF PRIMING DISCHARGE LAMPS OF MOTOR VEHICLE PROJECTORS |
WO2002015647A1 (en) * | 2000-08-17 | 2002-02-21 | Mitsubishi Denki Kabushiki Kaisha | Device for lighting discharge lamp |
DE10159112A1 (en) * | 2001-12-01 | 2003-06-18 | Hella Kg Hueck & Co | Ignition transformer for motor vehicle gas discharge lamp, has permanent magnet located in air-gap of annular core |
-
2005
- 2005-05-11 DE DE200520007484 patent/DE202005007484U1/en not_active Expired - Lifetime
- 2005-10-28 EP EP05799804A patent/EP1880586B1/en not_active Not-in-force
- 2005-10-28 WO PCT/EP2005/011588 patent/WO2006119799A1/en not_active Application Discontinuation
- 2005-10-28 ES ES05799804T patent/ES2390280T3/en active Active
Also Published As
Publication number | Publication date |
---|---|
WO2006119799A1 (en) | 2006-11-16 |
ES2390280T3 (en) | 2012-11-08 |
EP1880586A1 (en) | 2008-01-23 |
DE202005007484U1 (en) | 2006-09-21 |
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