EP1511130B1 - High pressure discharge lamp - Google Patents

High pressure discharge lamp Download PDF

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Publication number
EP1511130B1
EP1511130B1 EP04016503A EP04016503A EP1511130B1 EP 1511130 B1 EP1511130 B1 EP 1511130B1 EP 04016503 A EP04016503 A EP 04016503A EP 04016503 A EP04016503 A EP 04016503A EP 1511130 B1 EP1511130 B1 EP 1511130B1
Authority
EP
European Patent Office
Prior art keywords
contact element
pressure discharge
discharge lamp
electrical contact
chamber
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
EP04016503A
Other languages
German (de)
French (fr)
Other versions
EP1511130A1 (en
Inventor
Gerhard Behr
Matthias Burkhardt
Peter Helbig
Arnulf Rupp
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.)
Osram GmbH
Original Assignee
Osram GmbH
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Filing date
Publication date
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Publication of EP1511130A1 publication Critical patent/EP1511130A1/en
Application granted granted Critical
Publication of EP1511130B1 publication Critical patent/EP1511130B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/56—One or more circuit elements structurally associated with the lamp
    • 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
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
    • H01R33/945—Holders with built-in electrical component
    • 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

Definitions

  • the invention relates to a Hochdruckentladungslwnpe according to the preamble of patent claim 1.
  • Such a lamp cap and such a high-pressure discharge lamp are for example in the published patent application WO 00/59269 disclosed.
  • This document describes a lamp base with an integrated ignition device, which has an ignition transformer whose Zündnapssausgang is connected by means of an electrical contact element with a led out of the discharge vessel of the high-pressure discharge lamp power supply.
  • the electrical contact element is designed as a stamped bent part whose ends are welded to the ignition voltage output and the power supply.
  • the EP 1 189 314 A1 discloses a lamp socket and an operating device for a discharge lamp.
  • the lamp base of the high-pressure discharge lamp according to the invention has a receptacle for a transformer and is equipped with an electrical contact element which serves to connect a voltage output of the transformer to a power supply lead out of the discharge vessel of the high-pressure discharge lamp and which is designed as a structural unit with a plastic injection-molded part of the lamp cap.
  • the electrical contact element is almost complete and positively embedded in the material of the plastic injection molded part, wherein the matter of the plastic injection molded part ensures excellent electrical insulation of the electrical contact element. Due to the positive embedding of the electrical contact element in the plastic injection molded part, a precise spatial arrangement and alignment is also made possible.
  • the contacting of the ignition voltage transformer and the lamp power supply are therefore also simplified by the lamp base of the high-pressure discharge lamp according to the invention.
  • the plastic injection molded part of the lamp cap of the high-pressure discharge lamp at least two chambers, wherein a first chamber is designed as a receptacle for a transformer which serves as an ignition transformer for the high-pressure discharge lamp, and a first end of the electrical contact means extends into the first chamber to allow electrical connection to the voltage output of the transformer, while a second end of the electrical contact element is accessible from the second chamber of the plastic injection molded part to there for electrical connection with a power supply of the high-pressure discharge lamp to be available.
  • the ends of the electrical contact element are preferably provided with flat contact surfaces in order to ensure a good electrical contact and a good weld with the voltage output of the transformer or with the power supply.
  • the second end of the electrical contact element preferably has a bore for the power supply through this hole, the power supply is threaded through and back welded to the second end of the contact element to produce a reliable connection between the electrical contact element and the power supply.
  • the high-pressure discharge lamp according to the invention has a lamp base with an ignition transformer arranged therein for generating the ignition voltage for the high-pressure discharge lamp, wherein in the lamp base, an electrical contact element is arranged, which is connected to the ignition voltage output of the ignition transformer and with a led out of the discharge vessel of the high pressure discharge lamp power supply and as a unit with a plastic injection molded part is formed of the lamp cap.
  • an electrical contact element is arranged, which is connected to the ignition voltage output of the ignition transformer and with a led out of the discharge vessel of the high pressure discharge lamp power supply and as a unit with a plastic injection molded part is formed of the lamp cap.
  • the plastic injection-molded part has at least two chambers, wherein a first end of the electrical contact element in the first chamber and a second end of the electrical contact element is accessible from the second chamber.
  • the first chamber of the plastic injection molded part of the ZündTransformator is arranged and the first end of the electrical contact element is connected to the ignition voltage output of the transformer, while in the second chamber further electronic components of the ignition device of the high pressure discharge lamp can be accommodated, which make lower demands on the voltage insulation than that ignition transformer.
  • the second end of the electrical contact element is accessible from the second chamber of the plastic injection molded part and is connected there to the end of a led out of the discharge vessel of the high pressure discharge lamp power supply.
  • the junction between the second end of the electrical contact element and the end of the power supply is advantageously provided with an electrical insulation, preferably as electrical insulating potting compound is formed, in which the connection point is embedded.
  • the space between the walls of the first chamber of the plastic injection-molded part and the ignition transformer is preferably filled with an electrically insulating potting compound in order to increase the high-voltage strength of the lamp cap.
  • FIG. 1 illustrated preferred embodiment of the invention is a one-capped high-pressure discharge lamp for a Motor vehicle headlamps.
  • This high-pressure discharge lamp has a discharge vessel 11 made of quartz glass surrounded by a glass outer bulb 12 and having electrodes 13, 14 arranged therein for generating a gas discharge.
  • the electrodes 13, 14 are each connected to a led out of the discharge vessel 11 power supply 15 and 16, via which they are supplied with electrical energy.
  • the existing of the discharge vessel 11 and the outer bulb 12 assembly 1 is in the in FIG. 5 shown socket inner part 23 of the lamp base 2 fixed.
  • the lamp base 2 consists essentially of the base inner part 23, the base outer part 21, the cover 22 and the connection socket 40.
  • the base outer part 21 is provided with a receptacle 211, in which the socket inner part 23 is arranged and mounted.
  • the base inner part 23 and the receptacle 211 are provided with matched fastening means 231, 212.
  • the base outer part 21 is formed as a plastic injection molded part and consists of polyetherimides, which is also known under the name Ultem® 2300.
  • the FIG. 2 shows a plan view of the side facing away from the lamp vessels 11, 12 side of the base outer part 21, before mounting the lid 22.
  • the base outer part 21 has a substantially square cross-section.
  • the interior of the base outer part 21 is divided by a partition wall 213 into two chambers 214, 215 of different sizes.
  • a rod core transformer 1000 is arranged, which serves as an ignition transformer for accommodated in the lamp base 2 pulse ignition device of the high pressure discharge lamp.
  • second chamber 215 the remaining components of the pulse ignition device, in particular the ignition capacitor 61 and the spark gap 62, are arranged.
  • the base outer part 21 is in FIG. 4 embedded electrical contact element 3 embedded.
  • the electrical contact element 3 was already injected in the production of the plastic injection molded part 21 in this, so that it is almost completely surrounded by the material of the base outer part 21 and only the ends 31, 32 of the contact element 3 are accessible for contacting.
  • the first end 31 of the electric Contact element 3 extends into the first chamber 214 and is welded after the assembly of the rod core transformer with the high voltage leading Zündschreibsausgang the rod core transformer.
  • the second end 32 of the electrical contact element 3, which is provided with a through hole 33 for the inner power supply 15 extends into the second chamber 215.
  • inner power supply 15 extends in the conically constricted tube 216 of the base outer part 21 and is threaded through the bore 33 in the second end 32 of the electrical contact element 3, which extends directly into the conically narrowed end of the tube 216, threaded.
  • the conical or funnel-shaped constriction of the tube 216 facilitates the threading of the power supply 15 through the bore 33 of the contact element 3.
  • On the side facing away from the tube 216 side of the electrical contact element 3 is threaded through the hole 33 end of the power supply 15 to the second end 32nd the contact element 3 welded (not shown).
  • a trough 2171 is provided on the side remote from the tube 216 side of the contact element 3, which is bounded by a hollow cylindrical web 217.
  • the second end 32 of the contact element 3 forms part of the tank bottom.
  • the well 2171 is filled with an electrically insulating potting compound, so that the weld between the two lamp components 15, 32 is embedded in the potting compound.
  • the recirculated in the base 2 end of the socket remote from the base end of the discharge vessel 11 outer power supply 16 extends into the hollow cylindrical web 218, which is also formed on the base outer part 21.
  • Further hollow-cylindrical webs 219 serve for fastening the cover 22 and for fastening the connection socket 40, which forms the electrical connection of the high-pressure discharge lamp.
  • the end of the web 218 is provided with a bearing surface 2181 for a mounting plate 50, the shape of which is matched to the cross section of the second chamber 215.
  • the mounting board 50 closes after mounting the chamber 215.
  • a plurality of guide rails 2142, 2131 are arranged for the rod core transformer 1000.
  • the guide rails 2142, 2131 are appropriately matched to corresponding webs 1011, 1012, 1013 on the housing 1010 of the rod core transformer 1000, so that the position of the rod core transformer 1000 in the first chamber 214 is determined thereby.
  • a nub 2144 which determines the installation depth of the rod core transformer 1000 together with the first end 31 of the contact element 3.
  • the ignition voltage output 1030 of the rod core transformer 1000 rests on the first end 31 of the contact element 3 and is welded thereto while the housing 1010 of the rod core transformer 1000 is seated on the knob 2144.
  • the space between the rod core transformer 1000 and the side walls 2151, 213 of the first chamber 214 is filled with an electrically insulating potting compound.
  • the casting compound also penetrates into the interior of the transformer housing 1010 through ventilation openings 1014.
  • the primary winding 1020 of the rod core transformer 1000 is made of a metal strip and wound on the outside of the housing 1010.
  • the lid 22 covers the mounting board 50 and closes both chambers 214, 215 of the base outer part 21st
  • the mounting board 50 is shown, which covers the second chamber 215 of the base outer part 21.
  • On the mounting board 50 are serving as electrical connection of the high pressure discharge lamp socket 40 and the ignition capacitor 61, the spark gap 62 and other electronic components of an ignition device of in FIG. 1 arranged high-pressure discharge lamp arranged.
  • the three contact pins 42 of the female connector 40 are each connected via arranged on the mounting board 50 traces (not shown) with the embedded in the mounting board 50 annular metallic contact element 52, the ignition capacitor 61, the spark gap 62 or other electronic components.
  • the annular contact element 52 consists of a metal sheet, for example of copper, steel or a copper or steel alloy.
  • the mounting board 50 is placed on the base outer part 21 in such a way that the mounted on the mounting board 50 components 61, 62 of the ignition device in the second chamber 215 of the base outer part protrude and the pins 44 of the female connector 40 in the hollow webs 219 of the base outer part 21 and the webs 220 engage in the openings 51 of the mounting board.
  • the protruding from the hollow web 218 of the base outer part 21 end of the outer power supply 16 is thereby passed through the annular opening 53 of the contact element 52 and welded to the back of the mounting board 50 to the contact element 52 or soldered.
  • a plurality of openings 54, 55, 56 are provided in the mounting board.

Landscapes

  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

Die Erfindung betrifft eine Hochdruckentladungslwnpe gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a Hochdruckentladungslwnpe according to the preamble of patent claim 1.

I. Stand der Technik I. State of the art

Ein derartiger Lampensockel und eine derartige Hochdruckentladungslampe sind beispielsweise in der Offenlegungsschrift WO 00/59269 offenbart. Diese Schrift beschreibt einen Lampensockel mit darin integrierter Zündvorrichtung, die einen Zündtransformator aufweist, dessen Zündspannungsausgang mittels eines elektrischen Kontaktelementes mit einer aus dem Entladungsgefäß der Hochdruckentladungslampe herausgeführten Stromzuführung verbunden ist. Das elektrische Kontaktelement ist als Stanzbiegeteil ausgebildet, dessen Enden mit dem Zündspannungsausgang und der Stromzuführung verschweißt sind.Such a lamp cap and such a high-pressure discharge lamp are for example in the published patent application WO 00/59269 disclosed. This document describes a lamp base with an integrated ignition device, which has an ignition transformer whose Zündspannungsausgang is connected by means of an electrical contact element with a led out of the discharge vessel of the high-pressure discharge lamp power supply. The electrical contact element is designed as a stamped bent part whose ends are welded to the ignition voltage output and the power supply.

Die EP 1 189 314 A1 offenbart eine Lampenfassung und eine Betriebsvorrichtung for eine Entladungslampe.The EP 1 189 314 A1 discloses a lamp socket and an operating device for a discharge lamp.

II. Darstellung der Erfindung II. Presentation of the invention

Es ist die Aufgabe der Erfindung, einen Lampensockel für eine Hochdruckentladungslampe und eine entsprechende Hochdruckentladungslampe mit einer verbesserten Isolierung des obengenannten elektrischen Kontaktelementes und einem vereinfachten Aufbau bereitzustellen.It is the object of the invention to provide a lamp cap for a high-pressure discharge lamp and a corresponding high-pressure discharge lamp with improved insulation of the above-mentioned electrical contact element and a simplified structure.

Diese Aufgabe wird erfindungsgenaäß durch eine Hochdruckentladungslampe mit den Merkmalen aus dem Patentanspruch 1. Besonders vorteilhafte Ausführungen der Erfindung sind in den abhängigen Patentansprüchen beschrieben.This object is erfindungsgenaäß by a high-pressure discharge lamp with the features of claim 1. Particularly advantageous embodiments of the invention are described in the dependent claims.

Der Lampensockel der erfindungsgemätien Hochdruckentladungslampe weist eine Aufnahme für einen Transformator auf und ist mit einem elektrischen Kontaktelement ausgestattet, das zum Verbinden eines Spannungsausgangs des Transformators mit einer aus dem Entladungsgefäß der Hochdruckentladungslampe herausgeführten Stromzufiihrung dient und das als Baueinheit mit einem Kunststoffspritzgussteil des Lampensockels ausgebildet ist. Dadurch ist das elektrische Kontaktelement nahezu vollständig und formschlüssig in dem Material des Kunststoffspritzgussteils eingebettet, wobei das Materie des Kunststoffspritzgussteils eine vorzügliche elektrische Isolierung des elektrischen Kontaktelementes gewährleistet. Durch das formschlüssige Einbetten des elektrischen Kontaktelementes in dem Kunststoffspritzgussteil wird ferner eine präzise räumliche Anordnung und Ausrichtung ermöglicht. Die Kontaktierung des Zündspannungstransformators und der Lampenstromzuführung vereinfachen sich daher durch den Lampensockel der erfindungsgemäßen Hochdruckentladungslampe ebenfalls.The lamp base of the high-pressure discharge lamp according to the invention has a receptacle for a transformer and is equipped with an electrical contact element which serves to connect a voltage output of the transformer to a power supply lead out of the discharge vessel of the high-pressure discharge lamp and which is designed as a structural unit with a plastic injection-molded part of the lamp cap. As a result, the electrical contact element is almost complete and positively embedded in the material of the plastic injection molded part, wherein the matter of the plastic injection molded part ensures excellent electrical insulation of the electrical contact element. Due to the positive embedding of the electrical contact element in the plastic injection molded part, a precise spatial arrangement and alignment is also made possible. The contacting of the ignition voltage transformer and the lamp power supply are therefore also simplified by the lamp base of the high-pressure discharge lamp according to the invention.

Um einen möglichst kompakten Aufbau des Lampensockels und eine gute elektrische Isolierung des Zündtransformators zu gewährleistet, weist das Kunststoffspritzgussteil des Lampensockels der erfindungsgemäßen Hochdruckentladungslampe mindestens zwei Kammern auf, wobei eine erste Kammer als Aufnahme für einen Transformator ausgebildet ist, der als Zündtransformator für die Hochdruckentladungslampe dient, und sich ein erstes Ende des elektrischen Kontaktelemeates in die erste Kammer erstreckt, um eine elektrischen Verbindung mit dem Spannungsausgang des Transformators zu ermöglichen, während ein zweites Ende des elektrischen Kontaktelementes von der zweiten Kammer des Kunststoffspritzgussteils aus zugänglich ist, um dort für eine elektrische Verbindung mit einer Stromzuführung der Hochdruckentladungslampe verfügbar zu sein. Die Enden des elektrischen Kontaktelementes sind vorzugsweise mit ebenen Kontaktflächen versehen, um eine guten elektrischen Kontakt und eine gute Schweißverbindung mit dem Spannungsausgang des Transformators bzw. mit der Stromzuführung zu gewährleisten. Das zweite Ende des elektrischen Kontaktelementes weist vorzugsweise eine Bohrung für die Stromzuführung auf Durch diese Bohrung wird die Stromzuführung hindurchgefädelt und rückseitig mit dem zweiten Ende des Kontaktelementes verschweißt, um eine zuverlässige Verbindung zwischen dem elektrischen Kontaktelement und der Stromzuführung herzustellen.In order to ensure the most compact possible construction of the lamp cap and a good electrical insulation of the ignition transformer, the plastic injection molded part of the lamp cap of the high-pressure discharge lamp according to the invention at least two chambers, wherein a first chamber is designed as a receptacle for a transformer which serves as an ignition transformer for the high-pressure discharge lamp, and a first end of the electrical contact means extends into the first chamber to allow electrical connection to the voltage output of the transformer, while a second end of the electrical contact element is accessible from the second chamber of the plastic injection molded part to there for electrical connection with a power supply of the high-pressure discharge lamp to be available. The ends of the electrical contact element are preferably provided with flat contact surfaces in order to ensure a good electrical contact and a good weld with the voltage output of the transformer or with the power supply. The second end of the electrical contact element preferably has a bore for the power supply through this hole, the power supply is threaded through and back welded to the second end of the contact element to produce a reliable connection between the electrical contact element and the power supply.

Die erfindungsgemäße Hochdruckentladungslampe weist einen Lampensockel mit einem darin angeordneten Zündtransformator zum Erzeugen der Zündspannung für die Hochdruckentladungslampe auf, wobei in dem Lampensockel ein elektrisches Kontaktelement angeordnet ist, das mit dem Zündspannungsausgang des Zündtransformators und mit einer aus dem Entladungsgefäß der Hochdruckentladungslampe herausgeführten Stromzuführung verbunden ist und das als Baueinheit mit einem Kunststoffspritzgussteil des Lampensockels ausgebildet ist. Wie bereits oben erläutert wurde, ist dadurch das elektrische Kontaktelement nahezu vollständig und formschlüssig in dem Material des Kunststoffspritzgussteils eingebettet, so dass das Material des Kunststoffspritzgussteils eine vorzügliche elektrische Isolierung des elektrischen Kontaktelementes gewährleistet. Durch das formschlüssige Einbetten des elektrischen Kontaktelementes in dem Kunststoffspritzgussteil wird ferner eine präzise räumliche Anordnung und Ausrichtung ermöglicht. Die Kontaktierung des Zündspannungstransformators und der Lampenstmmzufübrung vereinfachen sich daher durch den erfindungsgemäßen Lampensockel ebenfalls.The high-pressure discharge lamp according to the invention has a lamp base with an ignition transformer arranged therein for generating the ignition voltage for the high-pressure discharge lamp, wherein in the lamp base, an electrical contact element is arranged, which is connected to the ignition voltage output of the ignition transformer and with a led out of the discharge vessel of the high pressure discharge lamp power supply and as a unit with a plastic injection molded part is formed of the lamp cap. As already explained above, as a result the electrical contact element is almost completely and positively embedded in the material of the plastic injection molded part, so that the material of the plastic injection molded part ensures excellent electrical insulation of the electrical contact element. Due to the positive embedding of the electrical contact element in the plastic injection molded part, a precise spatial arrangement and alignment is also made possible. The contacting of the Zündspannungstransformators and the Lampenstmmzufübrung therefore simplified by the lamp base according to the invention also.

Das Kunststoffspritzgussteil besitzt mindestens zwei Kammern, wobei sich ein erstes Ende des elektrischen Kontaktelementes in die erste Kammer und ein zweites Ende des elektrischen Kontaktelementes von der zweiten Kammer aus zugänglich ist. Dadurch wird eine separate räumliche Anordnung des Hochspannung führenden Zündtransformators ermöglicht. In der ersten Kammer des Kunststoffspritzgussteils ist der ZündTransformator angeordnet und das erste Ende des elektrischen Kontaktelementes ist mit dem Zündspannungsausgang des Transformators verbunden, während in der zweiten Kammer weitere elektronische Komponenten der Zündvorrichtung der Hochdruckentladungslampe untergebracht werden können, die geringere Anforderungen an die Spannungsisolierung stellen als der Zündtransformator. Das zweite Ende des elektrischen Kontaktelementes ist von der zweiten Kammer des Kunststoffspritzgussteils aus zugänglich und ist dort mit dem Ende einer aus dem Entladungsgefäß der Hochdruckentladungslampe herausgeführten Stromzuführung verbunden. Die Verbindungsstelle zwischen dem zweiten Ende des elektrischen Kontaktelementes und dem Ende der Stromzuführung ist vorteilhaft mit einer elektrischen Isolierung versehen, die vorzugsweise als elektrisch isolierende Vergussmasse ausgebildet ist, in der die Verbindungsstelle eingebettet ist. Der Zwischenraum zwischen den Wänden der ersten Kammer des Kunststoffspritzgussteils und dem Zündtransformator ist vorzugsweise mit einer elektrisch isolierenden Vergussmasse ausgefüllt, um die Hochspannungsfestigkeit des Lampensockels zu erhöhen.The plastic injection-molded part has at least two chambers, wherein a first end of the electrical contact element in the first chamber and a second end of the electrical contact element is accessible from the second chamber. This allows a separate spatial arrangement of the high-voltage ignition transformer. In the first chamber of the plastic injection molded part of the ZündTransformator is arranged and the first end of the electrical contact element is connected to the ignition voltage output of the transformer, while in the second chamber further electronic components of the ignition device of the high pressure discharge lamp can be accommodated, which make lower demands on the voltage insulation than that ignition transformer. The second end of the electrical contact element is accessible from the second chamber of the plastic injection molded part and is connected there to the end of a led out of the discharge vessel of the high pressure discharge lamp power supply. The junction between the second end of the electrical contact element and the end of the power supply is advantageously provided with an electrical insulation, preferably as electrical insulating potting compound is formed, in which the connection point is embedded. The space between the walls of the first chamber of the plastic injection-molded part and the ignition transformer is preferably filled with an electrically insulating potting compound in order to increase the high-voltage strength of the lamp cap.

III. Beschreibung des bevorzugten Ausführungsbeispiels III. Description of the Preferred Embodiment

Nachstehend wird die Erfindung anhand eines bevorzugten Ausführungsbeispiels näher erläutert. Es zeigen:

Figur 1
Eine Seitenansicht einer Hochdruckentladungslampe gemäß des bevorzugten Ausführungsbeispiels der Erfindung
Figur 2
Eine Draufsicht auf das Sockelaußenteil des Lampensockels der in Figur 1 abgebildeten Hochdruckentladungslampe
Figur 3
Eine Seitenansicht des in Figur 2 abgebildeten Sockelaußenteils in teilweise geschnittener Darstellung
Figur 4
Eine Draufsicht auf das elektrische Kontaktelement zum Verbinden des Zündspannungstransformators und der inneren Stromzuführung der Hochdruckentladungslampe
Figur 5
Eine Seitenansicht der im Sockelinnenteil fixierten, aus dem Entladungsgefäß und dem Außenkolben bestehenden Baueinheit der in Figur 1 abgebildeten Hochdruckentladungslampe
Figur 6
Eine Draufsicht auf den Zündtransformator der in Figur 1 abgebildeten Hochdruckentladungslampe
Figur 7
Eine Draufsicht auf die Montageplatine, die im Lampensockel der in Figur 1 abgebildeten Hochdruckentladungslampe angeordnet ist
The invention will be explained in more detail below with reference to a preferred embodiment. Show it:
FIG. 1
A side view of a high pressure discharge lamp according to the preferred embodiment of the invention
FIG. 2
A plan view of the base outer part of the lamp cap of in FIG. 1 pictured high pressure discharge lamp
FIG. 3
A side view of the in FIG. 2 pictured base outer part in a partially sectioned view
FIG. 4
A plan view of the electrical contact element for connecting the Zündspannungstransformators and the inner power supply of the high pressure discharge lamp
FIG. 5
A side view of the socket inner part fixed, consisting of the discharge vessel and the outer bulb assembly of FIG. 1 pictured high pressure discharge lamp
FIG. 6
A plan view of the ignition transformer of FIG. 1 pictured high pressure discharge lamp
FIG. 7
A top view of the mounting board, which in the lamp base of in FIG. 1 pictured high-pressure discharge lamp is arranged

Bei dem in Figur 1 abgebildeten bevorzugten Ausführungsbeispiel der Erfindung handelt es sich um eine einseitig gesockelte Hochdruckentladungslampe für einen Kraftfahrzeugscheinwerfer. Diese Hochdruckentladungslampe besitzt ein von einem gläsernen Außenkolben 12 umschlossenes Entladungsgefäß 11 aus Quarzglas mit darin angeordneten Elektroden 13, 14 zum Erzeugen einer Gasentladung. Die Elektroden 13, 14 sind jeweils mit einer aus dem Entladungsgefäß 11 herausgeführten Stromzuführung 15 bzw. 16 verbunden, über die sie mit elektrischer Energie versorgt werden. Die aus dem Entladungsgefäß 11 und dem Außenkolben 12 bestehenden Baueinheit 1 ist in dem in Figur 5 abgebildeten Sockelinnenteil 23 des Lampensockels 2 fixiert. Der Lampensockel 2 besteht im wesentlichen aus dem Sockelinnenteil 23, dem Sockelaußenteil 21, dem Deckel 22 und der Anschlussbuchse 40. Das Sockelaußenteil 21 ist mit einer Aufnahme 211 versehen, in der das Sockelinnenteil 23 angeordnet und montiert ist. Zur Montage des Sockelinnenteils 23 in der Aufnahme 211 des Sockelaußenteils 21 sind das Sockelinnenteil 23 und die Aufnahme 211 mit aufeinander abgestimmten Befestigungsmitteln 231, 212 versehen. Das Sockelaußenteil 21 ist als Kunststoffspritzgussteil ausgebildet und besteht aus Polyetherimide, das auch unter der Bezeichnung Ultem® 2300 bekannt ist.At the in FIG. 1 illustrated preferred embodiment of the invention is a one-capped high-pressure discharge lamp for a Motor vehicle headlamps. This high-pressure discharge lamp has a discharge vessel 11 made of quartz glass surrounded by a glass outer bulb 12 and having electrodes 13, 14 arranged therein for generating a gas discharge. The electrodes 13, 14 are each connected to a led out of the discharge vessel 11 power supply 15 and 16, via which they are supplied with electrical energy. The existing of the discharge vessel 11 and the outer bulb 12 assembly 1 is in the in FIG. 5 shown socket inner part 23 of the lamp base 2 fixed. The lamp base 2 consists essentially of the base inner part 23, the base outer part 21, the cover 22 and the connection socket 40. The base outer part 21 is provided with a receptacle 211, in which the socket inner part 23 is arranged and mounted. For mounting the base inner part 23 in the receptacle 211 of the base outer part 21, the base inner part 23 and the receptacle 211 are provided with matched fastening means 231, 212. The base outer part 21 is formed as a plastic injection molded part and consists of polyetherimides, which is also known under the name Ultem® 2300.

Die Figur 2 zeigt eine Draufsicht auf die von den Lampengefäßen 11, 12 abgewandte Seite des Sockelaußenteils 21, vor der Montage des Deckels 22. Das Sockelaußenteil 21 besitzt einen im wesentlichen quadratischen Querschnitt. Der Innenraum des Sockelaußenteils 21 wird durch eine Trennwand 213 in zwei unterschiedlich große Kammern 214, 215 unterteilt. In der kleineren, ersten Kammer 214 ist ein Stabkerntransformator 1000 angeordnet, der als Zündtransformator für die im Lampensockel 2 untergebrachte Impulszündvorrichtung der Hochdruckentladungslampe dient. In der größeren, zweiten Kammer 215 sind die restlichen Komponenten der Impulszündvorrichtung, insbesondere der Zündkondensator 61 und die Funkenstrecke 62, angeordnet. In dem Sockelaußenteil 21 ist das in Figur 4 abgebildete elektrische Kontaktelement 3 eingebettet. Es besteht aus einem Edelstahl und bildet mit dem Sockelaußenteil 21 eine Baueinheit. Seine Enden 31, 32 besitzen ebene Kontaktflächen. Das elektrische Kontaktelement 3 wurde bereits bei der Herstellung des Kunststoffspritzgussteils 21 in dieses eingespritzt, so dass es nahezu vollständig von dem Material des Sockelaußenteils 21 umgeben ist und nur die Enden 31, 32 des Kontaktelementes 3 für die Kontaktierung zugänglich sind. Das erste Ende 31 des elektrischen Kontaktelementes 3 erstreckt sich in die erste Kammer 214 und ist nach der Montage des Stabkerntransformators mit dem Hochspannung führenden Zündspannungsausgang des Stabkerntransformators verschweißt. Das zweite Ende 32 des elektrischen Kontaktelementes 3, das mit einer durchgehenden Bohrung 33 für die innere Stromzuführung 15 versehen ist, erstreckt sich in die zweite Kammer 215. Die, in der Längsachse der Hochdruckentladungslampe angeordnete, aus dem Entladungsgefäß 11 herausragende innere Stromzuführung 15 verläuft in dem konisch verengten Tubus 216 des Sockelaußenteils 21 und ist durch die Bohrung 33 im zweiten Ende 32 des elektrischen Kontaktelementes 3, das sich unmittelbar in das konisch verengte Ende des Tubus 216 erstreckt, hindurchgefädelt. Die konische oder trichterförmige Verengung des Tubus 216 erleichtert das Hindurchfädeln der Stromzuführung 15 durch die Bohrung 33 des Kontaktelementes 3. Auf der von dem Tubus 216 abgewandte Seite des elektrischen Kontaktelementes 3 ist das durch die Bohrung 33 hindurchgefädelte Ende der Stromzuführung 15 mit dem zweiten Ende 32 des Kontaktelementes 3 verschweißt (nicht abgebildet). In dem Sockelaußenteil 21 ist auf der von dem Tubus 216 abgewandten Seite des Kontaktelementes 3 eine Wanne 2171 vorgesehen, die durch einen hohlzylindrischen Steg 217 begrenzt wird. Das zweite Ende 32 des Kontaktelementes 3 bildet einen Teil des Wannenbodens. Nach dem Verschweißen der inneren Stromzuführung 15 mit dem zweiten Ende 32 des Kontaktelementes 3 wird die Wanne 2171 mit einer elektrisch isolierenden Vergussmasse ausgefüllt, so dass die Schweißstelle zwischen den beiden Lampenkomponenten 15, 32 in der Vergussmasse eingebettet ist. Das in den Sockel 2 zurückgeführte Ende der aus dem sockelfernen Ende des Entladungsgefäßes 11 herausragenden äußeren Stromzuführung 16 erstreckt sich in den hohlzylindrischen Steg 218, der ebenfalls an dem Sockelaußenteil 21 angeformt ist. Weitere hohlzylindrische Stege 219 dienen zur Befestigung des Deckels 22 und zur Befestigung der Anschlussbuchse 40, die den elektrischen Anschluss der Hochdruckentladungslampe bildet. Das Ende des Steges 218 ist mit einer Auflagefläche 2181 für eine Montageplatine 50, deren Form passgerecht auf den Querschnitt der zweiten Kammer 215 abgestimmt ist, ausgestattet. Die Montageplatine 50 verschließt nach ihrer Montage die Kammer 215. Die auf der Montageplatine 50 angeordneten Bauteile, wie zum Beispiel der Zündkondensator 61 und die Funkenstrecke 62 der Impulszündvorrichtung, ragen in die zweite Kammer 215 hinein. In den Seitenwänden 2151, 213 der ersten Kammer 214 sind mehrere Führungsschienen 2142, 2131 für den Stabkerntransformator 1000 angeordnet. Die Führungsschienen 2142, 2131 sind passgerecht auf entsprechende Stege 1011, 1012, 1013 am Gehäuse 1010 des Stabkerntransformators 1000 abgestimmt, so dass die Position des Stabkerntransformators 1000 in der ersten Kammer 214 dadurch festgelegt ist. Zusätzlich befindet sich in dem Boden 2143 der Kammer 214 eine Noppe 2144, die zusammen mit dem ersten Ende 31 des Kontaktelementes 3 die Einbautiefe des Stabkerntransformators 1000 bestimmt. Der Zündspannungsausgang 1030 des Stabkerntransformators 1000 sitzt auf dem ersten Ende 31 des Kontaktelementes 3 auf und ist mit diesem verschweißt während das Gehäuse 1010 des Stabkerntransformators 1000 auf der Noppe 2144 aufsitzt. Der Zwischenraum zwischen dem Stabkerntransformator 1000 und den Seitenwänden 2151, 213 der ersten Kammer 214 ist mit einer elektrisch isolierenden Vergussmasse ausgefüllt. Die Vergussmasse dringt durch Entlüftungsöffnungen 1014 auch in das Innenraum des Transformatorgehäuses 1010 ein. Die Primärwicklung 1020 des Stabkerntransformators 1000 besteht aus einem Metallband und ist auf die Außenseite des Gehäuses 1010 gewickelt. Der Deckel 22 deckt die Montageplatine 50 ab und verschließt beide Kammern 214, 215 des Sockelaußenteils 21.The FIG. 2 shows a plan view of the side facing away from the lamp vessels 11, 12 side of the base outer part 21, before mounting the lid 22. The base outer part 21 has a substantially square cross-section. The interior of the base outer part 21 is divided by a partition wall 213 into two chambers 214, 215 of different sizes. In the smaller, first chamber 214, a rod core transformer 1000 is arranged, which serves as an ignition transformer for accommodated in the lamp base 2 pulse ignition device of the high pressure discharge lamp. In the larger, second chamber 215, the remaining components of the pulse ignition device, in particular the ignition capacitor 61 and the spark gap 62, are arranged. In the base outer part 21 is in FIG. 4 embedded electrical contact element 3 embedded. It consists of a stainless steel and forms with the base outer part 21 a structural unit. Its ends 31, 32 have flat contact surfaces. The electrical contact element 3 was already injected in the production of the plastic injection molded part 21 in this, so that it is almost completely surrounded by the material of the base outer part 21 and only the ends 31, 32 of the contact element 3 are accessible for contacting. The first end 31 of the electric Contact element 3 extends into the first chamber 214 and is welded after the assembly of the rod core transformer with the high voltage leading Zündspannungsausgang the rod core transformer. The second end 32 of the electrical contact element 3, which is provided with a through hole 33 for the inner power supply 15 extends into the second chamber 215. The, arranged in the longitudinal axis of the high pressure discharge lamp, protruding from the discharge vessel 11 inner power supply 15 extends in the conically constricted tube 216 of the base outer part 21 and is threaded through the bore 33 in the second end 32 of the electrical contact element 3, which extends directly into the conically narrowed end of the tube 216, threaded. The conical or funnel-shaped constriction of the tube 216 facilitates the threading of the power supply 15 through the bore 33 of the contact element 3. On the side facing away from the tube 216 side of the electrical contact element 3 is threaded through the hole 33 end of the power supply 15 to the second end 32nd the contact element 3 welded (not shown). In the base outer part 21, a trough 2171 is provided on the side remote from the tube 216 side of the contact element 3, which is bounded by a hollow cylindrical web 217. The second end 32 of the contact element 3 forms part of the tank bottom. After welding the inner power supply 15 to the second end 32 of the contact element 3, the well 2171 is filled with an electrically insulating potting compound, so that the weld between the two lamp components 15, 32 is embedded in the potting compound. The recirculated in the base 2 end of the socket remote from the base end of the discharge vessel 11 outer power supply 16 extends into the hollow cylindrical web 218, which is also formed on the base outer part 21. Further hollow-cylindrical webs 219 serve for fastening the cover 22 and for fastening the connection socket 40, which forms the electrical connection of the high-pressure discharge lamp. The end of the web 218 is provided with a bearing surface 2181 for a mounting plate 50, the shape of which is matched to the cross section of the second chamber 215. The mounting board 50 closes after mounting the chamber 215. The arranged on the mounting board 50 components, such as the ignition capacitor 61 and the spark gap 62 of the pulse igniter, protrude into the second Chamber 215 into it. In the side walls 2151, 213 of the first chamber 214 a plurality of guide rails 2142, 2131 are arranged for the rod core transformer 1000. The guide rails 2142, 2131 are appropriately matched to corresponding webs 1011, 1012, 1013 on the housing 1010 of the rod core transformer 1000, so that the position of the rod core transformer 1000 in the first chamber 214 is determined thereby. In addition, in the bottom 2143 of the chamber 214 is a nub 2144, which determines the installation depth of the rod core transformer 1000 together with the first end 31 of the contact element 3. The ignition voltage output 1030 of the rod core transformer 1000 rests on the first end 31 of the contact element 3 and is welded thereto while the housing 1010 of the rod core transformer 1000 is seated on the knob 2144. The space between the rod core transformer 1000 and the side walls 2151, 213 of the first chamber 214 is filled with an electrically insulating potting compound. The casting compound also penetrates into the interior of the transformer housing 1010 through ventilation openings 1014. The primary winding 1020 of the rod core transformer 1000 is made of a metal strip and wound on the outside of the housing 1010. The lid 22 covers the mounting board 50 and closes both chambers 214, 215 of the base outer part 21st

In Figur 7 ist die Montageplatine 50 dargestellt, welche die zweite Kammer 215 des Sockelaußenteils 21 abdeckt. Auf der Montageplatine 50 sind die als elektrischer Anschluss der Hochdruckentladungslampe dienende Steckerbuchse 40 und der Zündkondensator 61, die Funkenstrecke 62 sowie weitere elektronische Bauteile einer Zündvorrichtung der in Figur 1 abgebildeten Hochdruckentladungslampe angeordnet. Die drei Kontaktstifte 42 der Steckerbuchse 40 sind jeweils über auf der Montageplatine 50 angeordnete Leiterbahnen (nicht abgebildet) mit dem in der Montageplatine 50 eingebetteten ringförmigen metallischen Kontaktelement 52, dem Zündkondensator 61, der Funkenstrecke 62 oder anderen elektronischen Bauteilen verbunden. Das ringförmige Kontaktelement 52 besteht aus einem Metallblech, beispielsweise aus Kupfer, Stahl oder einer Kupfer- oder Stahllegierung. Die Montageplatine 50 wird derart auf das Sockelaußenteil 21 aufgesetzt, dass die auf der Montageplatine 50 montierten Bauteile 61, 62 der Zündvorrichtung in die zweite Kammer 215 des Sockelaußenteils hineinragen und die Zapfen 44 der Steckerbuchse 40 in die Hohlstege 219 des Sockelaußenteils 21 sowie die Stege 220 in die Durchbrüche 51 der Montageplatine greifen. Das aus dem Hohlsteg 218 des Sockelaußenteils 21 herausragende Ende der äußeren Stromzuführung 16 wird dabei durch die Ringöffnung 53 des Kontaktelementes 52 hindurchgeführt und auf der Rückseite der Montageplatine 50 mit dem Kontaktelement 52 verschweißt oder verlötet. Zur elektrischen Isolierung des ringförmigen Kontaktelementes 52 und anderer Bauteile der Zündvorrichtung von dem Zündkondensator 61 und der Funkenstrecke 62 sind in der Montageplatine mehrere Durchbrüche 54, 55, 56 vorgesehen.In FIG. 7 the mounting board 50 is shown, which covers the second chamber 215 of the base outer part 21. On the mounting board 50 are serving as electrical connection of the high pressure discharge lamp socket 40 and the ignition capacitor 61, the spark gap 62 and other electronic components of an ignition device of in FIG. 1 arranged high-pressure discharge lamp arranged. The three contact pins 42 of the female connector 40 are each connected via arranged on the mounting board 50 traces (not shown) with the embedded in the mounting board 50 annular metallic contact element 52, the ignition capacitor 61, the spark gap 62 or other electronic components. The annular contact element 52 consists of a metal sheet, for example of copper, steel or a copper or steel alloy. The mounting board 50 is placed on the base outer part 21 in such a way that the mounted on the mounting board 50 components 61, 62 of the ignition device in the second chamber 215 of the base outer part protrude and the pins 44 of the female connector 40 in the hollow webs 219 of the base outer part 21 and the webs 220 engage in the openings 51 of the mounting board. The protruding from the hollow web 218 of the base outer part 21 end of the outer power supply 16 is thereby passed through the annular opening 53 of the contact element 52 and welded to the back of the mounting board 50 to the contact element 52 or soldered. For electrical insulation of the annular contact element 52 and other components of the ignition device of the ignition capacitor 61 and the spark gap 62 a plurality of openings 54, 55, 56 are provided in the mounting board.

Claims (4)

  1. High-pressure discharge lamp having a lamp base (2) and a starting transformer (1000) arranged in the lamp base (2) for the purpose of generating the starting voltage for the high-pressure discharge lamp, an electrical contact element (3) being arranged in the lamp base (2) and being connected to the starting voltage output (1030) of the starting transformer (1000) and to a power supply line (15) which is passed out of the discharge vessel (11) of the high-pressure discharge lamp, characterized in that the electrical contact element (3) is in the form of a module having a plastic injection-molded part (21) of the lamp base (2) which plastic injection-molded part (21) has at least two chambers (214, 215), the starting transformer (1000) being arranged in a first chamber (214), and the electrical contact element (3) being embedded in the material of the plastic injection-molded part (21), so that a first end (31) of the electrical contact element (3) extends into the first chamber (214) and is connected to the starting voltage output (1030) of the starting transformer (1000) and a second end (32) of the electrical contact element (3) extends into the second chamber (215), in which further modules (61, 62) of a starting apparatus are arranged, and is connected to the power supply line (15), and the interspace between the walls of the first chamber (214) and the starting transformer (1000) being filled with an electrically insulating sealing compound.
  2. High-pressure discharge lamp according to Claim 1, characterized in that the second end (32) of the electrical contact element (3) is provided with a hole (23) for the power supply line (15).
  3. High-pressure discharge lamp according to Claim 1, characterized in that the connection point of the second end (32) of the electrical contact element (3) with the power supply line (15) is provided with electrical insulation.
  4. High-pressure discharge lamp according to Claim 3, characterized in that the electrical insulation is a sealing compound in which the connection point is embedded.
EP04016503A 2003-08-26 2004-07-13 High pressure discharge lamp Not-in-force EP1511130B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10339588A DE10339588A1 (en) 2003-08-26 2003-08-26 Lamp base for a high-pressure discharge lamp and high-pressure discharge lamp
DE10339588 2003-08-26

Publications (2)

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EP1511130A1 EP1511130A1 (en) 2005-03-02
EP1511130B1 true EP1511130B1 (en) 2012-08-29

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EP04016503A Not-in-force EP1511130B1 (en) 2003-08-26 2004-07-13 High pressure discharge lamp

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US (1) US20050046324A1 (en)
EP (1) EP1511130B1 (en)
JP (1) JP4915892B2 (en)
KR (1) KR20050021277A (en)
CN (1) CN100487309C (en)
CA (1) CA2479066A1 (en)
DE (1) DE10339588A1 (en)
ES (1) ES2389724T3 (en)
TW (1) TW200514476A (en)

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DE102005023797A1 (en) * 2005-05-19 2006-11-23 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lamp base e.g. for high-pressure discharge lamp for vehicle head-light, has electronic contact element joining voltage output of transformer to lamp current supply
DE102005038043A1 (en) * 2005-08-09 2007-02-15 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lamp base for a high-pressure discharge lamp and high-pressure discharge lamp
DE102006014695A1 (en) * 2006-03-28 2007-10-04 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Grouting body manufacturing method for use in e.g. discharge lamp, involves forming buffer area for comparing occurred volume changes in preset position of grouting body, and inserting molded part into grouting area
DE102006052752A1 (en) * 2006-11-08 2008-05-15 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Substructure for an electric lamp
WO2009030267A1 (en) * 2007-08-31 2009-03-12 Osram Gesellschaft mit beschränkter Haftung Method for the production of an electrically insulating cast body and base for a lamp
DE102008033192A1 (en) * 2008-07-15 2010-01-21 Osram Gesellschaft mit beschränkter Haftung Transformer and lamp base element, lamp base and discharge lamp with such a lamp base
EP2351466B1 (en) * 2008-11-28 2013-01-02 Osram Ag Integrated gas discharge lamp with an ignition electronics integrated into the base for generating asymmetrical ignition pulses
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
DE102009016761B4 (en) * 2009-04-07 2020-11-12 SUMIDA Components & Modules GmbH Compact ignition module and subrack for ignition module
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DE102009054376B4 (en) * 2009-11-11 2011-09-01 Osram Gesellschaft mit beschränkter Haftung High pressure discharge lamp
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JP3090448B1 (en) * 1999-09-30 2000-09-18 松下電工株式会社 Lamp socket and discharge lamp lighting device
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CN1590840A (en) 2005-03-09
JP2005072010A (en) 2005-03-17
CA2479066A1 (en) 2005-02-26
DE10339588A1 (en) 2005-03-24
US20050046324A1 (en) 2005-03-03
JP4915892B2 (en) 2012-04-11
KR20050021277A (en) 2005-03-07
ES2389724T3 (en) 2012-10-30
TW200514476A (en) 2005-04-16
EP1511130A1 (en) 2005-03-02
CN100487309C (en) 2009-05-13

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