EP1605490B1 - Vehicle lamp - Google Patents

Vehicle lamp Download PDF

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Publication number
EP1605490B1
EP1605490B1 EP05010154A EP05010154A EP1605490B1 EP 1605490 B1 EP1605490 B1 EP 1605490B1 EP 05010154 A EP05010154 A EP 05010154A EP 05010154 A EP05010154 A EP 05010154A EP 1605490 B1 EP1605490 B1 EP 1605490B1
Authority
EP
European Patent Office
Prior art keywords
vehicle lamp
lamp
metal sheet
pin
vehicle
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
EP05010154A
Other languages
German (de)
French (fr)
Other versions
EP1605490A2 (en
EP1605490A3 (en
Inventor
Matthias Protsch
Thomas Schmidt-Lehmann
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 EP1605490A2 publication Critical patent/EP1605490A2/en
Publication of EP1605490A3 publication Critical patent/EP1605490A3/en
Application granted granted Critical
Publication of EP1605490B1 publication Critical patent/EP1605490B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/50—Means forming part of the tube or lamps for the purpose of providing electrical connection to it
    • H01J5/54—Means forming part of the tube or lamps for the purpose of providing electrical connection to it supported by a separate part, e.g. base
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F21S41/192—Details of lamp holders, terminals or connectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/48—Means forming part of the tube or lamp for the purpose of supporting it

Definitions

  • the invention relates to a vehicle lamp according to the preamble of patent claim 1.
  • Such a vehicle lamp is for example in the European Patent Application EP 0 786 791 A1 disclosed.
  • This vehicle lamp has a lamp base with a cylindrical base sleeve made of plastic, which is provided with two diametrically arranged, radially outwardly directed pins made of plastic, which are used for mounting the lamp in a vehicle headlight.
  • the vehicle lamp according to the invention has a provided with the electrical terminals of the vehicle lamp lamp base, which is provided with a plastic base part, which has at least one serving for mounting the vehicle lamp in the vehicle headlight molded pin, which is equipped with stiffening means.
  • the stiffening means the mechanical stability, in particular the resistance to fracture, the at least one pin increases, so that it can be formed as part of a locking mechanism for fixing the vehicle lamp in the lamp socket of the vehicle headlamp.
  • a metal sheet is advantageously used, which is at least partially embedded in the plastic material of the plastic base part.
  • the mechanical stability of the at least one pin is increased, so that the at least one pin can be formed as part of a locking device, preferably a bayonet closure.
  • a material for the metal sheet for example, stainless steel or spring steel is suitable.
  • the metal sheet is advantageously either embedded in the plastic material of the at least one pin or is formed so as to cover at least part of the outer surface of the at least one pin.
  • the aforementioned metal sheet is formed as a tab which is integrally formed on a metal ring.
  • the at least one tab can be positioned exactly in the casting mold for the plastic base part provided with the pin in order subsequently to embed it in the material of the corresponding pin by means of a plastic injection molding process.
  • the aforementioned metal ring also has the advantage that it can also be used as an electrical connection for the vehicle lamp.
  • a high-pressure discharge lamp in particular a metal halide high-pressure discharge lamp with an electrical power consumption of about 35 watts, which is intended for use in a motor vehicle headlight.
  • This high-pressure discharge lamp has a discharge vessel, in the interior of which gas discharge electrodes and a xenon and metal halide-comprising ionizable filling for generating a gas discharge are arranged and which is surrounded by a light-transmitting, cylindrical protective piston 1.
  • the protective piston 1 is attached directly to the discharge vessel.
  • a tubular extension 1 a of the protective piston 1 is fixed in the existing plastic lamp cap 2 of the high-pressure discharge lamp. Details of the discharge vessel, the protective piston 1 and its fixation in the lamp cap 2 are for example in the Laid-Open Publication EP 0 786 791 A1 described.
  • the lamp base 2 has a cylindrical, consisting of an electrically insulating, high temperature resistant thermoplastic plastic base sleeve 20 which has two molded, diametrically arranged pins 21, 22.
  • the two cones 21, 22 extend along a diameter of the base sleeve 20 and are formed on the outside of the base sleeve 20.
  • the thickness of the pins 21, 22, that is, their extension in the longitudinal direction of the lamp, is 3 mm.
  • the remote from the protective piston 1 end 23 of the lamp cap 2 is formed as a plug and equipped with the electrical terminals of the lamp.
  • An electrical connection of the vehicle lamp is designed as a ring-shaped metal contact 3, which forms part of the outside of the plug-formed end 23.
  • the second electrical connection is an axially arranged contact pin, which in the side view of FIG. 1 is not visible. Details of this contact pin are described, for example, in the above-mentioned published patent application.
  • the annular metal contact 3 is in FIG. 3 displayed. It is made of stainless steel.
  • the annular metal contact 3 has two integrally formed, diametrically arranged tabs 31, 32 which extend radially outward. These tabs 31, 32 are respectively embedded in the plastic material of a pin 21 and 22 respectively. This embedding of the tabs 31, 32 in the plastic material of the pins 21, 22 is achieved during the manufacturing process of the base sleeve 20 by means of a plastic injection molding process.
  • the annular metal contact 3 has an integrally formed, in the radial direction angled welding lug 33 which is provided with an opening 34 and is used for electrical contacting of the power supply wire of the current return 4.
  • the tabs 31, 32 have a thickness or sheet thickness of 0.4 mm. The free ends of the flaps 31, 32 are, as in FIG. 2 shown schematically, embedded centrally in the plastic material of the respective pin 21 and 22 respectively.
  • FIGS. 4 and 5 two further embodiments for the stiffening of the pins 21, 22 of the high-pressure discharge lamp described in more detail above are shown. These embodiments differ only in the embedded in the pins 21, 22 or the pins 21, 22 enclosing metal sheets. Therefore, the same reference numerals have been used in all figures for identical lamp parts.
  • FIG. 4 illustrated second embodiment of the invention is an angled in each pin 21, 22 of the base 20 of the high pressure discharge lamp Metal sheet 41 embedded.
  • a first leg 411 of the metal sheet 41 extends into the pins 21 and 22 and is completely enclosed by the plastic material of the pin.
  • the second leg 412 of the metal sheet 41 is angled at right angles from the first leg 411 and embedded in the plastic material of the cylindrical base part 20.
  • the metal sheet 41 is not connected to the annular contact 3.
  • top and bottom and the perpendicular to the radius of the lamp cap 20 oriented end face of the pin 21 and 22 are enveloped by a substantially U-shaped metal sheet 51.
  • the largest part of the surface of the pin 21 or 22 is therefore formed by the metal sheet 51.
  • the U-leg 511 of the metal plate 51 which covers the top of the pin 21 and 22, is provided with a right angle from the U-leg 511 angled tab 5110, which is embedded in the plastic material of the base 20.
  • the second U-leg 512 covers the underside of the pin 21 or 22, while the connecting portion 513 of the U-legs 511, 512 covers the aforementioned end face of the pin 21 and 22 respectively.
  • the metal sheet 51 is not connected to the annular contact 3.
  • the second leg 412 of the metal sheet 41 according to the second embodiment of the invention or the tab 5110 of the metal sheet 51 according to the third embodiment of the invention may be electrically connected within the base 20 with an auxiliary electrode of the high pressure discharge lamp, for example a Zündangeselektrode 6 of the high pressure discharge lamp the auxiliary ignition electrode 6 is applied, for example, as an electrically conductive coating on the protective piston 1 of the high-pressure discharge lamp, as in FIG. 6 is shown according to the fourth embodiment.
  • an auxiliary electrode of the high pressure discharge lamp for example a Zündangeselektrode 6 of the high pressure discharge lamp the auxiliary ignition electrode 6 is applied, for example, as an electrically conductive coating on the protective piston 1 of the high-pressure discharge lamp, as in FIG. 6 is shown according to the fourth embodiment.
  • the electrical contact to the voltage source can be made, for example, by means of the embedded in the pin 21 first leg 411 of the metal angle 41, which can protrude for this purpose from the pin 21, or by means of the surface of the pin 21 partially covering U-legs 511, 512th of the metal sheet 51 can be realized.
  • the Zündangeselektrode 6 but can also be electrically conductive with the current feedback. 4 be connected or formed galvanically separated from the electrodes and power supply lines of the high pressure discharge lamp.
  • the fourth embodiment is correct, apart from the auxiliary ignition electrode 6 and their contacting, in all other details with the in FIG. 1 illustrated embodiment match.
  • the metal sheets are made of stainless steel or spring steel.
  • the plastic base 20 and the pin 21 formed integrally therewith consist of a thermally highly resilient plastic from the group of polyetherimide (PEI), polyphenylene sulfide (PPS) and liquid crystal polymer (LCP).
  • PEI polyetherimide
  • PPS polyphenylene sulfide
  • LCP liquid crystal polymer
  • Polyetherimide which is also known under the trade name ULTEM®, has a glass fiber content of 30 percent and the pins 21 already show a strength of more than 500 Newton without the metallic reinforcing agents. The elongation at break of this material is 2 percent.
  • LCP Liquid Crystal Polymer
  • Vectra® or Zenite® the proportion of glass fiber in the material is between 30 percent and 50 percent.
  • the pin strength is here, without metallic stiffening agent, about 150 Newton to 200 Newton.
  • the elongation at break has a value of 1.5 percent.
  • LCP is a highly anisotropic, highly crystalline material which forms crystalline regions already in the liquid phase, so that an optimization of the cone strength can be achieved by a suitable orientation of the crystals during the casting or spraying of the base 20.

Abstract

A lamp base (2) provided with electrical connections for lamp has a plastic base sleeve (20) having integrally formed studs (21,22) used to mount the lamp in a vehicle headlight. The studs are provided with metal sheets.

Description

Die Erfindung betrifft eine Fahrzeuglampe gemäß des Oberbegriffs des Patentanspruchs 1.The invention relates to a vehicle lamp according to the preamble of patent claim 1.

I. Stand der Technik I. State of the art

Eine derartige Fahrzeuglampe ist beispielsweise in der europäischen Offenlegungsschrift EP 0 786 791 A1 offenbart. Diese Fahrzeuglampe besitzt einen Lampensockel mit einer zylindrischen Sockelhülse aus Kunststoff, die mit zwei diametral angeordneten, radial nach außen gerichteten Zapfen aus Kunststoff versehen ist, die zur Montage der Lampe in einem Fahrzeugscheinwerfer dienen.Such a vehicle lamp is for example in the European Patent Application EP 0 786 791 A1 disclosed. This vehicle lamp has a lamp base with a cylindrical base sleeve made of plastic, which is provided with two diametrically arranged, radially outwardly directed pins made of plastic, which are used for mounting the lamp in a vehicle headlight.

Es hat sich gezeigt, dass die mechanische Stabilität dieser Zapfen nicht ausreichend ist, um sie als Bestandteil eines Verriegelungsmechanismus, insbesondere eines Bajonettverschlusses mit dem Fahrzeugscheinwerfer zu verwenden.It has been found that the mechanical stability of these pins is not sufficient to use them as part of a locking mechanism, in particular a bayonet closure with the vehicle headlight.

II. Darstellung der Erfindung II. Presentation of the invention

Es ist die Aufgabe der Erfindung, eine gattungsgemäße Fahrzeuglampe mit einem verbesserten Lampensockel bereitzustellen, der den oben aufgeführten Nachteil vermeidet.It is the object of the invention to provide a generic vehicle lamp with an improved lamp base, which avoids the disadvantage mentioned above.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Patentanspruchs 1 gelöst. Besonders vorteilhafte Ausführungen der Erfindung sind in den abhängigen Patentansprüchen beschrieben.This object is achieved by the features of claim 1. Particularly advantageous embodiments of the invention are described in the dependent claims.

Die erfindungsgemäße Fahrzeuglampe weist einen mit den elektrischen Anschlüssen der Fahrzeuglampe versehenen Lampensockel auf, der mit einem Kunststoffsockelteil versehen ist, das mindestens einen zur Montage der Fahrzeuglampe im Fahrzeugscheinwerfer dienenden angeformten Zapfen besitzt, der mit Versteifungsmitteln ausgestattet ist. Durch die Versteifungsmittel wird die mechanische Stabilität, insbesondere die Bruchsicherheit, des mindestens einen Zapfens erhöht, so dass er als Bestandteil eines Verriegelungsmechanismus zur Fixierung der Fahrzeuglampe in der Lampenfassung des Fahrzeugscheinwerfers ausgebildet werden kann.The vehicle lamp according to the invention has a provided with the electrical terminals of the vehicle lamp lamp base, which is provided with a plastic base part, which has at least one serving for mounting the vehicle lamp in the vehicle headlight molded pin, which is equipped with stiffening means. The stiffening means the mechanical stability, in particular the resistance to fracture, the at least one pin increases, so that it can be formed as part of a locking mechanism for fixing the vehicle lamp in the lamp socket of the vehicle headlamp.

Als Versteifungsmittel wird in vorteilhafter Weise ein Metallblech verwendet, das zumindest partiell in dem Kunststoffmaterial des Kunststoffsockelteils eingebettet ist. Durch das Metallblech wird die mechanische Stabilität des mindestens einen Zapfens erhöht, so dass der mindestens eine Zapfen als Bestandteil einer Verriegelungsvorrichtung, vorzugsweise eines Bajonettverschlusses ausgebildet werden kann. Als Material für das Metallblech eignet sich beispielsweise Edelstahl oder Federstahl. Das Metallblech ist in vorteilhafter Weise entweder in dem Kunststoffmaterial des mindestens einen Zapfens eingebettet oder so ausgebildet, dass es zumindest einen Teil der äußeren Oberfläche des mindestens einen Zapfens bedeckt. Gemäß eines bevorzugten Ausführungsbeispiels ist das vorgenannte Metallblech als Lasche ausgebildet, die an einen Metallring angeformt ist. Mittels des Metallrings kann die mindestens eine Lasche exakt in der Gussform für das mit den Zapfen versehene Kunststoffsockelteil positioniert werden, um sie anschließend mittels eines Kunststoffspritzgussverfahrens in dem Material des entsprechenden Zapfens einzubetten. Der vorgenannte Metallring hat ferner den Vorteil, dass er zusätzlich als elektrischer Anschluss für die Fahrzeuglampe genutzt werden kann.As a stiffening agent, a metal sheet is advantageously used, which is at least partially embedded in the plastic material of the plastic base part. By the metal sheet, the mechanical stability of the at least one pin is increased, so that the at least one pin can be formed as part of a locking device, preferably a bayonet closure. As a material for the metal sheet, for example, stainless steel or spring steel is suitable. The metal sheet is advantageously either embedded in the plastic material of the at least one pin or is formed so as to cover at least part of the outer surface of the at least one pin. According to a preferred embodiment, the aforementioned metal sheet is formed as a tab which is integrally formed on a metal ring. By means of the metal ring, the at least one tab can be positioned exactly in the casting mold for the plastic base part provided with the pin in order subsequently to embed it in the material of the corresponding pin by means of a plastic injection molding process. The aforementioned metal ring also has the advantage that it can also be used as an electrical connection for the vehicle lamp.

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 Fahrzeuglampe gemäß eines bevorzugten Ausführungsbeispiels der Erfindung in teilweiser geschnittener, schematischer Darstellung
Figur 2
Eine vergrößerte Darstellung des in Figur1 im Querschnitt abgebildeten Ausschnitts des Lampensockels gemäß des ersten Ausführungsbeispiels der Erfindung
Figur 3
Eine schematische Darstellung des ringförmigen elektrischen Anschlusses der in Figur 1 abgebildeten Fahrzeuglampe
Figur 4
Einen vergrößerte Darstellung des in Figur1 im Querschnitt abgebildeten Ausschnitts des Lampensockels gemäß des zweiten Ausführungsbeispiels der Erfindung
Figur 5
Einen vergrößerte Darstellung des in Figur 1 im Querschnitt abgebildeten Ausschnitts des Lampensockels gemäß des dritten Ausführungsbeispiels der Erfindung
Figur 6
Eine Seitenansicht einer Fahrzeuglampe gemäß eines vierten Ausführungsbeispiels der Erfindung in teilweiser geschnittener, schematischer Darstellung mit Zündhilfselektrode auf dem Schutzkolben
The invention will be explained in more detail below with reference to a preferred embodiment. Show it:
FIG. 1
A side view of a vehicle lamp according to a preferred embodiment of the invention in a partially sectioned, schematic representation
FIG. 2
An enlarged view of the in Figur1 shown in cross-section of the lamp socket according to the first embodiment of the invention
FIG. 3
A schematic representation of the annular electrical connection of in FIG. 1 pictured vehicle lamp
FIG. 4
An enlarged view of the in Figur1 shown in cross-section of the lamp socket according to the second embodiment of the invention
FIG. 5
An enlarged view of the in FIG. 1 shown in cross-section of the lamp socket according to the third embodiment of the invention
FIG. 6
A side view of a vehicle lamp according to a fourth embodiment of the invention in a partially sectioned, schematic representation with Zündhilfselektrode on the protective piston

Bei dem in Figur 1 abgebildeten bevorzugten Ausführungsbeispiel der Erfindung handelt es sich um eine Hochdruckentladungslampe, insbesondere eine Halogen-Metalldampf-Hochdruckentladungslampe mit einer elektrischen Leistungsaufnahme von ca. 35 Watt, die für den Einsatz in einem Kraftfahrzeugscheinwerfer vorgesehen ist.At the in FIG. 1 illustrated preferred embodiment of the invention is a high-pressure discharge lamp, in particular a metal halide high-pressure discharge lamp with an electrical power consumption of about 35 watts, which is intended for use in a motor vehicle headlight.

Diese Hochdruckentladungslampe besitzt ein Entladungsgefäß, in dessen Innenraum Gasentladungselektroden und eine Xenon sowie Metallhalogenide umfassende ionisierbare Füllung zum Erzeugen einer Gasentladung angeordnet sind und das von einem lichtdurchlässigen, zylindrischen Schutzkolben 1 umgeben ist. Der Schutzkolben 1 ist unmittelbar an dem Entladungsgefäß befestigt. Ein rohrartiger Fortsatz 1 a des Schutzkolbens 1 ist in dem aus Kunststoff bestehenden Lampensockel 2 der Hochdruckentladungslampe fixiert. Einzelheiten des Entladungsgefäßes, des Schutzkolbens 1 und dessen Fixierung in dem Lampensockel 2 sind beispielsweise in der Offenlegungsschrift EP 0 786 791 A1 beschrieben.This high-pressure discharge lamp has a discharge vessel, in the interior of which gas discharge electrodes and a xenon and metal halide-comprising ionizable filling for generating a gas discharge are arranged and which is surrounded by a light-transmitting, cylindrical protective piston 1. The protective piston 1 is attached directly to the discharge vessel. A tubular extension 1 a of the protective piston 1 is fixed in the existing plastic lamp cap 2 of the high-pressure discharge lamp. Details of the discharge vessel, the protective piston 1 and its fixation in the lamp cap 2 are for example in the Laid-Open Publication EP 0 786 791 A1 described.

Der Lampensockel 2 weist eine zylindrische, aus einem elektrisch isolierenden, hochtemperaturfesten thermoplastischen Kunststoff bestehende Sockelhülse 20 auf, die zwei angeformte, diametral angeordnete Zapfen 21, 22 besitzt. Die beiden Zapfen 21, 22 erstrecken sich entlang eines Durchmessers der Sockelhülse 20 und sind an die Außenseite der Sockelhülse 20 angeformt. Die Dicke der Zapfen 21, 22, das heißt, ihre Ausdehnung in Längsrichtung der Lampe, beträgt 3 mm. Das von dem Schutzkolben 1 abgewandte Ende 23 des Lampensockels 2 ist als Stecker ausgebildet und mit den elektrischen Anschlüssen der Lampe ausgestattet. Ein elektrischer Anschluss der Fahrzeuglampe ist als ringförmiger Metallkontakt 3 ausgebildet, der einen Teil der Außenseite des als Stecker ausgebildeten Endes 23 bildet. Bei dem zweiten elektrischen Anschluss handelt es sich um einen axial angeordneten Kontaktpin, der in der Seitenansicht der Figur 1 nicht sichtbar ist. Details dieses Kontaktpins sind beispielsweise in der oben genannten Offenlegungsschrift beschrieben.The lamp base 2 has a cylindrical, consisting of an electrically insulating, high temperature resistant thermoplastic plastic base sleeve 20 which has two molded, diametrically arranged pins 21, 22. The two cones 21, 22 extend along a diameter of the base sleeve 20 and are formed on the outside of the base sleeve 20. The thickness of the pins 21, 22, that is, their extension in the longitudinal direction of the lamp, is 3 mm. The remote from the protective piston 1 end 23 of the lamp cap 2 is formed as a plug and equipped with the electrical terminals of the lamp. An electrical connection of the vehicle lamp is designed as a ring-shaped metal contact 3, which forms part of the outside of the plug-formed end 23. The second electrical connection is an axially arranged contact pin, which in the side view of FIG. 1 is not visible. Details of this contact pin are described, for example, in the above-mentioned published patent application.

Der ringförmige Metallkontakt 3 ist in Figur 3 abgebildet. Er besteht aus Edelstahl. Der ringförmige Metallkontakt 3 besitzt zwei angeformte, diametral angeordnete Laschen 31, 32, die sich radial nach außen erstrecken. Diese Laschen 31, 32 sind jeweils in dem Kunststoffmaterial eines Zapfens 21 bzw. 22 eingebettet. Diese Einbettung der Laschen 31, 32 in dem Kunststoffmaterial der Zapfen 21, 22 wird während des Fertigungsprozesses der Sockelhülse 20 mittels eines Kunststoffspritzgussverfahrens erzielt. Zusätzlich weist der ringförmige Metallkontakt 3 eine angeformte, in radialer Richtung abgewinkelte Schweißfahne 33, die mit einem Durchbruch 34 versehen ist und zur elektrischen Kontaktierung des Stromzuführungsdrahtes der Stromrückführung 4 dient. Die Laschen 31, 32 haben eine Dicke bzw. Blechstärke von 0,4 mm. Die freien Enden der Laschen 31, 32 sind, wie in Figur 2 schematisch dargestellt, mittig in dem Kunststoffmaterial des jeweiligen Zapfens 21 bzw. 22 eingebettet.The annular metal contact 3 is in FIG. 3 displayed. It is made of stainless steel. The annular metal contact 3 has two integrally formed, diametrically arranged tabs 31, 32 which extend radially outward. These tabs 31, 32 are respectively embedded in the plastic material of a pin 21 and 22 respectively. This embedding of the tabs 31, 32 in the plastic material of the pins 21, 22 is achieved during the manufacturing process of the base sleeve 20 by means of a plastic injection molding process. In addition, the annular metal contact 3 has an integrally formed, in the radial direction angled welding lug 33 which is provided with an opening 34 and is used for electrical contacting of the power supply wire of the current return 4. The tabs 31, 32 have a thickness or sheet thickness of 0.4 mm. The free ends of the flaps 31, 32 are, as in FIG. 2 shown schematically, embedded centrally in the plastic material of the respective pin 21 and 22 respectively.

In den Figuren 4 und 5 sind zwei weitere Ausführungsbeispiele für die Versteifung der Zapfen 21, 22 der oben näher beschriebene Hochdruckentladungslampe gezeigt. Diese Ausführungsbeispiele unterscheiden sich nur in den in den Zapfen 21, 22 eingebetteten bzw. die Zapfen 21, 22 umschließenden Metallblechen. Daher wurden in allen Figuren für identische Lampenteile auch dieselben Bezugszeichen verwendet.In the FIGS. 4 and 5 two further embodiments for the stiffening of the pins 21, 22 of the high-pressure discharge lamp described in more detail above are shown. These embodiments differ only in the embedded in the pins 21, 22 or the pins 21, 22 enclosing metal sheets. Therefore, the same reference numerals have been used in all figures for identical lamp parts.

Gemäß des in Figur 4 abgebildeten zweiten Ausführungsbeispiels der Erfindung ist in jedem Zapfen 21, 22 des Sockels 20 der Hochdruckentladungslampe ein abgewinkeltes Metallblech 41 eingebettet. Ein erster Schenkel 411 des Metallblechs 41 erstreckt sich in den Zapfen 21 bzw. 22 und ist vollständig von dem Kunststoffmaterial des Zapfens umschlossen. Der zweite Schenkel 412 des Metallblechs 41 ist rechtwinklig von dem ersten Schenkel 411 abgewinkelt und in dem Kunststoffmaterial des zylindrischen Sockelteils 20 eingebettet. Das Metallblech 41 ist nicht mit dem ringförmigen Kontakt 3 verbunden.According to the in FIG. 4 illustrated second embodiment of the invention is an angled in each pin 21, 22 of the base 20 of the high pressure discharge lamp Metal sheet 41 embedded. A first leg 411 of the metal sheet 41 extends into the pins 21 and 22 and is completely enclosed by the plastic material of the pin. The second leg 412 of the metal sheet 41 is angled at right angles from the first leg 411 and embedded in the plastic material of the cylindrical base part 20. The metal sheet 41 is not connected to the annular contact 3.

Gemäß des in Figur 5 abgebildeten dritten Ausführungsbeispiels der Erfindung werden Oberseite und Unterseite sowie die senkrecht zum Radius des Lampensockels 20 orientierte Stirnfläche des Zapfens 21 bzw. 22 von einem im wesentlichen U-förmig ausgebildeten Metallblech 51 umhüllt. Der größte Teil der Oberfläche des Zapfens 21 bzw. 22 wird daher von dem Metallblech 51 gebildet. Der U-Schenkel 511 des Metallblechs 51, der die Oberseite des Zapfens 21 bzw. 22 abdeckt, ist mit einer im rechten Winkel von dem U-Schenkel 511 abgewinkelten Lasche 5110 versehen, die in dem Kunststoffmaterial des Sockels 20 eingebettet ist. Der zweite U-Schenkel 512 deckt die Unterseite des Zapfens 21 bzw. 22 ab, während der Verbindungsabschnitt 513 der U-Schenkel 511, 512 die vorgenannte Stirnfläche des Zapfens 21 bzw. 22 abdeckt. Das Metallblech 51 ist nicht mit dem ringförmigen Kontakt 3 verbunden.According to the in FIG. 5 illustrated third embodiment of the invention top and bottom and the perpendicular to the radius of the lamp cap 20 oriented end face of the pin 21 and 22 are enveloped by a substantially U-shaped metal sheet 51. The largest part of the surface of the pin 21 or 22 is therefore formed by the metal sheet 51. The U-leg 511 of the metal plate 51, which covers the top of the pin 21 and 22, is provided with a right angle from the U-leg 511 angled tab 5110, which is embedded in the plastic material of the base 20. The second U-leg 512 covers the underside of the pin 21 or 22, while the connecting portion 513 of the U-legs 511, 512 covers the aforementioned end face of the pin 21 and 22 respectively. The metal sheet 51 is not connected to the annular contact 3.

Der zweite Schenkel 412 des Metallblechs 41 gemäß des zweiten Ausführungsbeispiels der Erfindung bzw. die Lasche 5110 des Metallblechs 51 gemäß des dritten Ausführungsbeispiels der Erfindung können innerhalb des Sockels 20 elektrisch leitend mit einer Hilfselektrode der Hochdruckentladungslampe, beispielsweise einer Zündhilfselektrode 6 der Hochdruckentladungslampe verbunden sein, wobei die Zündhilfselektrode 6 beispielsweise als elektrisch leitende Beschichtung auf dem Schutzkolben 1 der Hochdruckentladungslampe aufgebracht ist, wie in Figur 6 gemäß dem vierten Ausführungsbeispiel dargestellt ist. Der elektrische Kontakt zur Spannungsquelle kann beispielsweise mittels des in dem Zapfen 21 eingebetteten ersten Schenkels 411 des Metallwinkels 41 hergestellt werden, der zu diesen Zweck aus dem Zapfen 21 vorstehen kann, oder mittels der die Oberfläche des Zapfens 21 partiell abdeckenden U-Schenkel 511, 512 des Metallblechs 51 realisiert werden. Die Zündhilfselektrode 6 kann aber auch elektrisch leitend mit der Stromrückführung 4 verbunden sein oder galvanisch getrennt von den Elektroden und Stromzuführungen der Hochdruckentladungslampe ausgebildet sein. Das vierte Ausführungsbeispiel stimmt, abgesehen von der Zündhilfselektrode 6 und deren Kontaktierung, in allen anderen Details mit dem in Figur 1 abgebildeten Ausführungsbeispiel überein.The second leg 412 of the metal sheet 41 according to the second embodiment of the invention or the tab 5110 of the metal sheet 51 according to the third embodiment of the invention may be electrically connected within the base 20 with an auxiliary electrode of the high pressure discharge lamp, for example a Zündhilfselektrode 6 of the high pressure discharge lamp the auxiliary ignition electrode 6 is applied, for example, as an electrically conductive coating on the protective piston 1 of the high-pressure discharge lamp, as in FIG. 6 is shown according to the fourth embodiment. The electrical contact to the voltage source can be made, for example, by means of the embedded in the pin 21 first leg 411 of the metal angle 41, which can protrude for this purpose from the pin 21, or by means of the surface of the pin 21 partially covering U-legs 511, 512th of the metal sheet 51 can be realized. The Zündhilfselektrode 6 but can also be electrically conductive with the current feedback. 4 be connected or formed galvanically separated from the electrodes and power supply lines of the high pressure discharge lamp. The fourth embodiment is correct, apart from the auxiliary ignition electrode 6 and their contacting, in all other details with the in FIG. 1 illustrated embodiment match.

Bei allen Ausführungsbeispielen bestehen die Metallbleche aus Edelstahl oder Federstahl. Der Kunststoffsockel 20 und die einteilig damit ausgebildeten Zapfen 21 bestehen aus einem thermisch hoch belastbaren Kunststoff aus der Gruppe von Polyetherimid (PEI), Polyphenylensulfid (PPS) und Liquid Crystal Polymer (LCP). Polyetherimid, das auch unter dem Handelsnamen ULTEM® bekannt ist, besitzt einen Glasfaseranteil von 30 Prozent und die Zapfen 21 zeigen bereits ohne die metallischen Versteifungsmittel eine Festigkeit von mehr al 500 Newton. Die Bruchdehnung dieses Materials liegt bei 2 Prozent. Bei dem Liquid Crystal Polymer (LCP), das auch unter dem Handelsnamen Vectra® oder Zenite® bekannt ist, beträgt der Anteil an Glasfaser in dem Material zwischen 30 Prozent und 50 Prozent. Die Zapfenfestigkeit beträgt hier, ohne metallische Versteifungsmittel, ca. 150 Newton bis 200 Newton. Die Bruchdehnung besitzt einen Wert von 1,5 Prozent. LCP ist ein stark anisotropes, hochkristallines Material, das bereits in der flüssigen Phase kristalline Bereiche ausbildet, so dass durch eine geeignete Ausrichtung der Kristalle während des Gießens bzw. Spritzens des Sockels 20 eine Optimierung der Zapfenfestigkeit erreicht werden kann.In all embodiments, the metal sheets are made of stainless steel or spring steel. The plastic base 20 and the pin 21 formed integrally therewith consist of a thermally highly resilient plastic from the group of polyetherimide (PEI), polyphenylene sulfide (PPS) and liquid crystal polymer (LCP). Polyetherimide, which is also known under the trade name ULTEM®, has a glass fiber content of 30 percent and the pins 21 already show a strength of more than 500 Newton without the metallic reinforcing agents. The elongation at break of this material is 2 percent. In the case of the Liquid Crystal Polymer (LCP), also known under the trade name Vectra® or Zenite®, the proportion of glass fiber in the material is between 30 percent and 50 percent. The pin strength is here, without metallic stiffening agent, about 150 Newton to 200 Newton. The elongation at break has a value of 1.5 percent. LCP is a highly anisotropic, highly crystalline material which forms crystalline regions already in the liquid phase, so that an optimization of the cone strength can be achieved by a suitable orientation of the crystals during the casting or spraying of the base 20.

Claims (8)

  1. Vehicle lamp having a lamp base, which is equipped with the electrical connections of the vehicle lamp, the lamp base (2) having a plastic base part (20) which has at least one integrally formed stud (21), which serves the purpose of mounting the vehicle lamp in the vehicle headlight, characterized in that the at least one stud (21) is provided with reinforcing means (31, 41, 51).
  2. Vehicle lamp according to Claim 1, characterized in that the at least one stud (21) is formed as part of a bayonet fitting.
  3. Vehicle lamp according to Claim 1 or 2, characterized in that the reinforcing means comprise a metal sheet (31, 41, 51) which is at least partially embedded in the plastic material of the plastic base part (20).
  4. Vehicle lamp according to Claim 3, characterized in that the metal sheet is in the form of a lug (31) which is integrally formed on a metal ring (3).
  5. Vehicle lamp according to Claim 4, characterized in that the metal ring (3) is in the form of an electrical connection of Vehicle lamp.
  6. Vehicle lamp according to Claim 3, characterized in that the metal sheet (31, 41) extends into the plastic material of the at least one stud (21).
  7. Vehicle lamp according to Claim 3, characterized in that the metal sheet (51) forms at least part of the outer surface of the at least one stud (21).
  8. Vehicle lamp according to Claim 3, characterized in that the metal sheet is electrically conductively connected to an auxiliary starting electrode (6).
EP05010154A 2004-05-19 2005-05-10 Vehicle lamp Not-in-force EP1605490B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004025268 2004-05-19
DE102004025268A DE102004025268A1 (en) 2004-05-19 2004-05-19 vehicle lamp

Publications (3)

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EP1605490A2 EP1605490A2 (en) 2005-12-14
EP1605490A3 EP1605490A3 (en) 2007-12-12
EP1605490B1 true EP1605490B1 (en) 2010-05-05

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EP05010154A Not-in-force EP1605490B1 (en) 2004-05-19 2005-05-10 Vehicle lamp

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US (1) US7275855B2 (en)
EP (1) EP1605490B1 (en)
JP (1) JP4838535B2 (en)
CN (1) CN1702804B (en)
AT (1) ATE467226T1 (en)
CA (1) CA2507906A1 (en)
DE (2) DE102004025268A1 (en)

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US7658535B2 (en) * 2004-08-05 2010-02-09 Koninklijke Philips Electronics, N.V. Lamp having improved vibration damping
DE102006042178A1 (en) * 2006-09-08 2008-03-27 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH lamp base
KR20090068329A (en) * 2006-09-14 2009-06-26 코닌클리즈케 필립스 일렉트로닉스 엔.브이. Lamp for a light system
JP4573821B2 (en) * 2006-10-16 2010-11-04 三洋電機株式会社 Light source lamp unit
DE102007007523A1 (en) * 2007-02-15 2008-08-21 Zeibina Kunststoff-Technik Gmbh Contacting and holding device for incandescent lamps
DE102009040572A1 (en) 2009-09-08 2011-03-10 Osram Gesellschaft mit beschränkter Haftung lamp unit

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FR1493064A (en) * 1966-07-13 1967-08-25 Lampes Sa Bayonet base for electric lamps
FR1590624A (en) * 1968-06-14 1970-04-20
US5747919A (en) * 1994-12-29 1998-05-05 Philips Electronics North America Corporation Electric lamp having a hybrid skirted lamp base
DE19602625A1 (en) * 1996-01-25 1997-07-31 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Electric lamp
JP2000156104A (en) * 1998-11-20 2000-06-06 Stanley Electric Co Ltd Head lamp for vehicle
WO2001044869A1 (en) * 1999-12-16 2001-06-21 Nikon Corporation Bayonet mount
JP4194251B2 (en) * 2001-03-26 2008-12-10 ヒロセ電機株式会社 Lamp socket
DE10148115A1 (en) * 2001-09-28 2003-04-17 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Headlamp bulb for vehicle, has vessel and base with reference protrusions formed on reference ring joined to metal holder and base flange and with flat annular surface parallel to plane of flange
DE10148114A1 (en) * 2001-09-28 2003-04-17 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh headlight bulb
JP3910410B2 (en) * 2001-11-09 2007-04-25 株式会社小糸製作所 Discharge bulb and manufacturing method thereof
DE10200831A1 (en) * 2002-01-02 2003-07-17 Philips Intellectual Property Lamp and headlights for easy installation

Also Published As

Publication number Publication date
EP1605490A2 (en) 2005-12-14
ATE467226T1 (en) 2010-05-15
US7275855B2 (en) 2007-10-02
CA2507906A1 (en) 2005-11-19
DE502005009510D1 (en) 2010-06-17
DE102004025268A1 (en) 2005-12-08
US20050259432A1 (en) 2005-11-24
CN1702804B (en) 2010-09-29
EP1605490A3 (en) 2007-12-12
JP4838535B2 (en) 2011-12-14
JP2005332821A (en) 2005-12-02
CN1702804A (en) 2005-11-30

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