EP1294013A2 - Incandescent lamp for automobile headlight - Google Patents

Incandescent lamp for automobile headlight Download PDF

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Publication number
EP1294013A2
EP1294013A2 EP02018370A EP02018370A EP1294013A2 EP 1294013 A2 EP1294013 A2 EP 1294013A2 EP 02018370 A EP02018370 A EP 02018370A EP 02018370 A EP02018370 A EP 02018370A EP 1294013 A2 EP1294013 A2 EP 1294013A2
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EP
European Patent Office
Prior art keywords
filament
incandescent
power supply
common plane
section
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.)
Granted
Application number
EP02018370A
Other languages
German (de)
French (fr)
Other versions
EP1294013B1 (en
EP1294013A3 (en
Inventor
Gerhard Behr
Peter Helbig
Christian Seichter
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
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Priority date (The priority date 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 date listed.)
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Publication of EP1294013A2 publication Critical patent/EP1294013A2/en
Publication of EP1294013A3 publication Critical patent/EP1294013A3/en
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Classifications

    • 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
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/17—Discharge light sources
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K9/00—Lamps having two or more incandescent bodies separately heated
    • H01K9/08—Lamps having two or more incandescent bodies separately heated to provide selectively different light effects, e.g. for automobile headlamp
    • 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
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/02—Incandescent bodies
    • H01K1/16—Electric connection thereto
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/18—Mountings or supports for the incandescent body
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes

Definitions

  • the invention relates to an incandescent lamp for a motor vehicle headlight according to the preamble of claim 1.
  • Such an incandescent lamp is, for example, in the European patent application EP 0 791 779.
  • This document describes a motor vehicle headlight with a two-filament halogen bulb, which is an axially symmetrical lamp vessel with a filament axially aligned therein and a transversely aligned one Has incandescent filament and a shading device for the axial filament.
  • this is for mounting and power supply the filament serving frame constructed such that at least one Power supply wire, preferably that for holding the shading device serving power wire, one from the common level of power wires outstanding and past the transversely oriented filament Has section which is shaped such that it is outside the main Light emission direction of the second filament is arranged.
  • the main direction of light emission is perpendicular to the longitudinal axis of the transverse aligned filament extending directions meant.
  • the aforementioned power supply wire on the transversely oriented filament passed by, so that light rays that this filament perpendicular to its longitudinal axis emitted, can not hit the aforementioned power supply wire.
  • this power supply wire has one from the common plane of the power supply wires protruding and aligned to the transversely Incandescent filament passed portion which is shaped or arranged so that it emits rays of light that this filament emits perpendicular to its longitudinal axis, is not hit. If the motor vehicle headlight predominantly only downward light component of the transversely aligned filament then it is sufficient that only the power supply wire carrying the shading device is guided past the transversely oriented incandescent filament in order to to reduce the shadowing effects by the frame significantly and the usable Noticeably increase the proportion of light emitted by the transverse spiral.
  • the motor vehicle headlight predominantly only the light component emitted upwards the transversely oriented incandescent filament, then it is sufficient that only the one with the axially aligned - that is, aligned parallel to the lamp vessel axis - Filament connected power supply wire on the transversely aligned Incandescent filament is guided past to highlight the shadowing effects from the frame to reduce and the usable portion of the emitted by the transverse spiral Noticeably increase light.
  • the shadowing effects can be reduced the most when both of the aforementioned power supply wires on the transverse helix to be led past.
  • the frame structure according to the invention is also characterized by a special simple construction.
  • the three power supply wires are in common Plane perpendicular to the longitudinal axis of the transverse with respect to the lamp vessel axis aligned filament fixed.
  • the transversely oriented incandescent filament advantageously serve the from the common plane projecting portion of the shading device carrying Power supply wire and a protruding from the common level, angled end of the first power supply wire.
  • the ends of the transversely oriented filament therefore do not need to be angled to connect to their power supply wires. This increases the vibration resistance of the lamp or the filament holder.
  • the section protruding from the common plane of the power supply wires of the power supply wire carrying the shading device is advantageous formed essentially trapezoidal, and the end of this section is advantageously arranged obliquely to the lamp vessel axis and with the Shading device welded. This means that only three bending points are required around the power supply wire carrying the shading device on the to guide the transversely aligned filament.
  • the shape of the shading device for the axial helix has also been improved. It points on its side facing the axially aligned filament an elevation on to make the end of this filament easier with the shading device to be able to weld.
  • the shading device has a slightly curved shading nose, which is in the space between extends the two filaments.
  • the width of the shading nose advantageously corresponds the length of the light emitting part of the transverse helix, by one mutual influence of the light emission of the two filaments largely to avoid.
  • the side of the shading device facing away from the axial helix is advantageously with one or more obliquely to the lamp vessel axis extending humps to provide a reliable weld between to ensure the shading device and the power supply wire carrying it.
  • the incandescent lamp according to the invention shown in FIG. 1 is a two-filament halogen lamp for use in a motor vehicle headlight is provided.
  • the light bulb according to the invention has a glass, essentially axially symmetrical lamp vessel 1, which by means of a press seal 1a is sealed gastight.
  • the top of the lamp vessel 1 is with a provided opaque coating 1b.
  • the pinch seal 1a is in the Fixed lamp base 2, which is equipped with three electrical connections 3.
  • Within of the lamp vessel 1 are aligned axially with respect to the lamp vessel axis first filament 4 and a transversely aligned to the lamp vessel axis second filament 5 arranged.
  • the first filament 4 is partially one Shading device 6, which is also called dimming cap 6 below, surround.
  • the lamp is in a horizontal position, that is, with a horizontal one Lamp vessel axis, operated such that the anti-dazzle device 6 below the first Filament 4 is arranged.
  • the frame for holding and making electrical contact between the two filaments 4, 5 consists of the anti-dazzle device 6 and three power supply wires 7, 8 and 9 and a quartz glass beam 10 in which the power supply wires 7 to 9 have melted down.
  • the power supply wires 7 to 9 are through the crimp seal 1a passed and each with an electrical connection 3 of Lamp electrically connected.
  • the three power supply wires 7 to 9 are through the quartz glass beam 10 in a common plane perpendicular to the longitudinal axis the second filament 5 fixed.
  • the first power supply wire 7 has one the common plane of the power supply wires 7 to 9 angled end 7a, which is welded to one end of the second filament 5.
  • the other end of the second filament 5 is welded to the second power supply wire 8, the also serves to hold the anti-dazzle device 6.
  • the welded connection is made, for example using a laser or resistance welding.
  • the ends of the Filaments 4, 5 made of tungsten are each provided with a molybdenum strip encased to weldability with the molybdenum power supplies 7, 8, 9 or to improve the molybdenum cap 6.
  • the second power supply wire 8 has one substantially trapezoidal section 8a on the second filament 5 passed so that the of the second filament 5 perpendicular to it Helix axis did not emit light rays through this power supply wire 8 be hindered.
  • the end 8b of the oblique to the lamp vessel axis Power supply wire 8 is with the lower facing away from the first filament 4 Side of the anti-dazzle device 6 connected by means of a projection weld.
  • the third power supply wire 9 runs in a straight line and essentially parallel to the lamp vessel axis. He is close to the base End of the first filament 4 welded. The other end of the first filament 4 is welded to the upper side of the anti-dazzle device 6 facing it.
  • the top of the anti-dazzle device 6 is provided with an elevation 6b, with which this filament end is connected by a projection weld.
  • Figure 5 shows details of the frame structure according to the second embodiment the invention.
  • This embodiment differs from that above described first embodiment only by the design of the near the base End of the transversely oriented filament connected third Power supply wire.
  • the first embodiment map the invention.
  • the third power supply wire 9 also has a substantially trapezoidal shape designed section 9a, which leads past the second filament 5 is that those emitted by this filament 5 perpendicular to its longitudinal axis Light rays from this power supply wire 9 are not shadowed. In all other details match the second embodiment with the first.
  • the invention is not limited to the exemplary embodiments explained in more detail above.
  • a hard glass beam can also be used, for example become.
  • the frame according to the invention without one to produce such beams.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Containers, Films, And Cooling For Superconductive Devices (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

The device has an essentially axially symmetrical vessel with axial and transversal glow coils and a frame for holding and electrically contacting the coils with a shading device for the first coil (4) and 3 current lead wires (7a,8a,9) in a common plane perpendicular to the second coil's longitudinal axis. At least one lead has a section (8a) protruding from the plane, passing the second coil (5) and outside the main light radiation direction.

Description

Die Erfindung betrifft eine Glühlampe für einen Kraftfahrzeugscheinwerfer gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to an incandescent lamp for a motor vehicle headlight according to the preamble of claim 1.

I. Stand der Technik I. State of the art

Eine derartige Glühlampe ist beispielsweise in der europäischen Offenlegungsschrift EP 0 791 779 offenbart. Diese Schrift beschreibt einen Kraftfahrzeugscheinwerfer mit einer Zweifaden-Halogenglühlampe, die ein axialsymmetrisches Lampengefäß mit einer darin axial ausgerichteten Glühwendel und einer transversal ausgerichteten Glühwendel sowie eine Abschattungsvorrichtung für die Axialwendel aufweist.Such an incandescent lamp is, for example, in the European patent application EP 0 791 779. This document describes a motor vehicle headlight with a two-filament halogen bulb, which is an axially symmetrical lamp vessel with a filament axially aligned therein and a transversely aligned one Has incandescent filament and a shading device for the axial filament.

II. Darstellung der Erfindung II. Presentation of the invention

Es ist die Aufgabe der Erfindung, eine Glühlampe mit einem verbesserten Gestellaurbau bereitzustellen. Insbesondere soll gewährleistet werden, dass die Lichtemission der Glühwendeln durch ihre Stromzuführungen möglichst wenig behindert wird und Abschattungseffekte in der hauptsächlichen Lichtemissionsrichtung der Glühwendeln durch die Stromzuführungen reduziert werden.It is the object of the invention to provide an incandescent lamp with an improved frame construction provide. In particular, it should be ensured that the light emission the filament is hampered as little as possible by its power supply and shadowing effects in the main light emission direction of the Incandescent filaments can be reduced by the power supplies.

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

Bei der erfindungsgemäßen Glühlampe ist das zur Halterung und Spannungsversorgung der Glühwendeln dienende Gestell derart konstruiert, dass mindestens ein Stromzuführungsdraht, vorzugsweise der zur Halterung der Abschattungsvorrichtung dienende Stromzuführungsdraht, einen aus der gemeinsamen Ebene der Stromzuführungsdrähte herausragenden und an der transversal ausgerichteten Glühwendel vorbeigeführten Abschnitt aufweist, der derart geformt ist, dass er außerhalb der hauptsächlichen Lichtabstrahlrichtung der zweiten Glühwendel angeordnet ist. Mit der hauptsächlichen Lichtabstrahlrichtung sind die senkrecht zur Längsachse der transversal ausgerichteten Glühwendel verlaufenden Richtungen gemeint. Stattdessen ist der vorgenannte Stromzuführungsdraht an der transversal ausgerichteten Glühwendel vorbeigeführt, so dass Lichtstrahlen, die diese Glühwendel senkrecht zu ihrer Längsachse emittiert, den vorgenannten Stromzuführungsdraht nicht treffen können. Zu diesem Zweck weist dieser Stromzuführungsdraht einen aus der gemeinsamen Ebene der Stromzuführungsdrähte herausragenden und an der transversal ausgerichteten Glühwendel vorbeigeführten Abschnitt auf, der derart geformt oder angeordnet ist, dass er von Lichtstrahlen, die diese Glühwendel senkrecht zu ihrer Längsachse emittiert, nicht getroffen wird. Wenn der Kraftfahrzeugscheinwerfer vorwiegend nur den nach unten abgestrahlten Lichtanteil der transversal ausgerichteten Glühwendel nutzt, dann genügt es, dass nur der die Abschattungsvorrichtung tragende Stromzuführungsdraht an der transversal ausgerichteten Glühwendel vorbeigeführt wird, um die Abschattungseffekte durch das Gestell deutlich zu reduzieren und den nutzbaren Anteil des von der Transversalwendel emittierten Lichts merklich zu erhöhen. Nutzt der Kraftfahrzeugscheinwerfer vorwiegend nur den nach oben abgestrahlten Lichtanteil der transversal ausgerichteten Glühwendel, dann genügt es, dass nur der mit der axial ausgerichteten - das heißt, parallel zur Lampengefäßachse ausgerichteten - Glühwendel verbundene Stromzuführungsdraht an der transversal ausgerichteten Glühwendel vorbeigeführt wird, um die Abschattungseffekte durch das Gestell deutlich zu reduzieren und den nutzbaren Anteil des von der Transversalwendel emittierten Lichts merklich zu erhöhen. Am stärksten können die Abschattungseffekte vermindert werden, wenn beide vorgenannten Stromzuführungsdrähte an der Transversalwendel vorbeigeführt werden.In the incandescent lamp according to the invention, this is for mounting and power supply the filament serving frame constructed such that at least one Power supply wire, preferably that for holding the shading device serving power wire, one from the common level of power wires outstanding and past the transversely oriented filament Has section which is shaped such that it is outside the main Light emission direction of the second filament is arranged. With the the main direction of light emission is perpendicular to the longitudinal axis of the transverse aligned filament extending directions meant. Instead is the aforementioned power supply wire on the transversely oriented filament passed by, so that light rays that this filament perpendicular to its longitudinal axis emitted, can not hit the aforementioned power supply wire. To for this purpose, this power supply wire has one from the common plane of the power supply wires protruding and aligned to the transversely Incandescent filament passed portion which is shaped or arranged so that it emits rays of light that this filament emits perpendicular to its longitudinal axis, is not hit. If the motor vehicle headlight predominantly only downward light component of the transversely aligned filament then it is sufficient that only the power supply wire carrying the shading device is guided past the transversely oriented incandescent filament in order to to reduce the shadowing effects by the frame significantly and the usable Noticeably increase the proportion of light emitted by the transverse spiral. Uses the motor vehicle headlight predominantly only the light component emitted upwards the transversely oriented incandescent filament, then it is sufficient that only the one with the axially aligned - that is, aligned parallel to the lamp vessel axis - Filament connected power supply wire on the transversely aligned Incandescent filament is guided past to highlight the shadowing effects from the frame to reduce and the usable portion of the emitted by the transverse spiral Noticeably increase light. The shadowing effects can be reduced the most when both of the aforementioned power supply wires on the transverse helix to be led past.

Der erfindungsgemäße Gestellaufbau zeichnet sich ferner auch durch eine besonders einfache Konstruktion aus. Die drei Stromzuführungsdrähte werden in einer gemeinsamen Ebene senkrecht zur Längsachse der transversal bezüglich der Lampengefäßachse ausgerichteten Glühwendel fixiert. Zur Halterung und elektrischen Kontaktierung der transversal ausgerichteten Glühwendel dienen vorteilhafterweise der aus der gemeinsamen Ebene herausragende Abschnitt des die Abschattungsvorrichtung tragenden Stromzuführungsdrahtes und ein ebenfalls aus der gemeinsamen Ebene herausragendes, abgewinkeltes Ende des ersten Stromzuführungsdrahtes. Die Enden der transversal ausgerichteten Glühwendel müssen daher nicht abgewinkelt werden, um eine Verbindung mit ihren Stromzuführungsdrähten herzustellen. Dadurch erhöht sich die Vibrationsfestigkeit der Lampe bzw. der Wendelhalterung.The frame structure according to the invention is also characterized by a special simple construction. The three power supply wires are in common Plane perpendicular to the longitudinal axis of the transverse with respect to the lamp vessel axis aligned filament fixed. For mounting and electrical contacting the transversely oriented incandescent filament advantageously serve the from the common plane projecting portion of the shading device carrying Power supply wire and a protruding from the common level, angled end of the first power supply wire. The ends of the transversely oriented filament therefore do not need to be angled to connect to their power supply wires. This increases the vibration resistance of the lamp or the filament holder.

Der aus der gemeinsamen Ebene der Stromzuführungsdrähte herausragende Abschnitt des die Abschattungsvorrichtung tragenden Stromzuführungsdrahtes ist vorteilhafterweise im wesentlichen trapezförmig ausgebildet, und das Ende dieses Abschnittes ist vorteilhafterweise schräg zur Lampengefäßachse angeordnet und mit der Abschattungsvorrichtung verschweißt. Dadurch sind nur drei Biegestellen erforderlich, um den die Abschattungsvorrichtung tragenden Stromzuführungsdraht an der transversal ausgerichteten Glühwendel vorbeizuführen.The section protruding from the common plane of the power supply wires of the power supply wire carrying the shading device is advantageous formed essentially trapezoidal, and the end of this section is advantageously arranged obliquely to the lamp vessel axis and with the Shading device welded. This means that only three bending points are required around the power supply wire carrying the shading device on the to guide the transversely aligned filament.

Die Gestalt der Abschattungsvorrichtung für die Axialwendel wurde ebenfalls verbessert. Sie weist auf ihrer der axial ausgerichteten Glühwendel zugewandten Seite eine Erhebung auf, um das Ende dieser Glühwendel einfacher mit der Abschattungsvorrichtung verschweißen zu können. Außerdem besitzt die Abschattungsvorrichtung eine gerinfügig gewölbte Abschatternase, die sich in den Zwischenraum zwischen den beiden Glühwendeln erstreckt. Die Breite der Abschatternase entspricht vorteilhafterweise der Länge des lichtemittierenden Teils der Transversalwendel, um eine gegenseitige Beeinflußung der Lichtemission der beiden Glühwendeln weitgehend zu vermeiden. Die von der Axialwendel abgewandte Seite der Abschattungsvorrichtung ist vorteilhafterweise mit einem oder mehreren schräg zur Lampengefäßachse verlaufenden Buckeln versehen, um eine zuverlässige Schweißverbindung zwischen der Abschattungsvorrichtung und dem sie tragenden Stromzuführungsdraht zu gewährleisten.The shape of the shading device for the axial helix has also been improved. It points on its side facing the axially aligned filament an elevation on to make the end of this filament easier with the shading device to be able to weld. In addition, the shading device has a slightly curved shading nose, which is in the space between extends the two filaments. The width of the shading nose advantageously corresponds the length of the light emitting part of the transverse helix, by one mutual influence of the light emission of the two filaments largely to avoid. The side of the shading device facing away from the axial helix is advantageously with one or more obliquely to the lamp vessel axis extending humps to provide a reliable weld between to ensure the shading device and the power supply wire carrying it.

III. Beschreibung der bevorzugten Ausführungsbeispiele III. Description of the preferred embodiments

Nachstehend wird die Erfindung anhand zweier bevorzugter Ausführungsbeispiele näher erläutert. Es zeigen:

Figur 1
Eine Seitenansicht einer Glühlampe gemäß des ersten Ausführungsbeispiel der Erfindung in schematischer Darstellung
Figur 2
Eine schematische Draufsicht auf die Oberseite des Gestells und der Glühwendeln der in Figur 1 abgebildeten Lampe
Figur 3
Eine Draufsicht auf die Unterseite des in Figur 2 gezeigten Gestells
Figur 4
Eine Seitenansicht des in den Figuren 2 und 3 abgebildeten Gestells
Figur 5
Eine Unteransicht des Gestells gemäß des zweiten Ausführungsbeispiels der Erfindung
The invention is explained in more detail below on the basis of two preferred exemplary embodiments. Show it:
Figure 1
A side view of an incandescent lamp according to the first embodiment of the invention in a schematic representation
Figure 2
A schematic plan view of the top of the frame and the filaments of the lamp shown in Figure 1
Figure 3
A top view of the underside of the frame shown in Figure 2
Figure 4
A side view of the frame shown in Figures 2 and 3
Figure 5
A bottom view of the frame according to the second embodiment of the invention

Bei der in Figur 1 dargestellten erfindungsgemäßen Glühlampe handelt es sich um eine Zweifaden-Halogenglühlampe, die zur Verwendung in einem Kraftfahrzeugscheinwerfer vorgesehen ist. Die erfindungsgemäße Glühlampe besitzt ein gläsernes, im wesentlichen axialsymmetrisches Lampengefäß 1, das mittels einer Quetschdichtung 1a gasdicht verschlossen ist. Die Kuppe des Lampengefäßes 1 ist mit einer lichtundurchlässigen Beschichtung 1b versehen. Die Quetschdichtung 1a ist in dem Lampensockel 2 fixiert, der mit drei elektrischen Anschlüssen 3 ausgestattet ist. Innerhalb des Lampengefäßes 1 sind eine axial bezüglich der Lampengefäßachse ausgerichtete erste Glühwendel 4 und eine transversal zur Lampengefäßachse ausgerichtete zweite Glühwendel 5 angeordnet. Die erste Glühwendel 4 ist teilweise von einer Abschattungsvorrichtung 6, die nachfolgend auch Abblendkappe 6 genannt wird, umgeben. Sie dient zur Erzeugung des Abblendlichts oder des Tagfahrlichts in einem Kraftfahrzeug, während mittels der zweiten Glühwendel 5 das Fernlicht erzeugt wird. Die Lampe wird in horizontaler Lage, das heißt mit horizontal verlaufender Lampengefäßachse, betrieben, derart dass die Abblendkappe 6 unterhalb der ersten Glühwendel 4 angeordnet ist.The incandescent lamp according to the invention shown in FIG. 1 is a two-filament halogen lamp for use in a motor vehicle headlight is provided. The light bulb according to the invention has a glass, essentially axially symmetrical lamp vessel 1, which by means of a press seal 1a is sealed gastight. The top of the lamp vessel 1 is with a provided opaque coating 1b. The pinch seal 1a is in the Fixed lamp base 2, which is equipped with three electrical connections 3. Within of the lamp vessel 1 are aligned axially with respect to the lamp vessel axis first filament 4 and a transversely aligned to the lamp vessel axis second filament 5 arranged. The first filament 4 is partially one Shading device 6, which is also called dimming cap 6 below, surround. It is used to generate the low beam or daytime running lights in one Motor vehicle, while using the second filament 5 generates the high beam becomes. The lamp is in a horizontal position, that is, with a horizontal one Lamp vessel axis, operated such that the anti-dazzle device 6 below the first Filament 4 is arranged.

Das Gestell zur Halterung und zur elektrischen Kontaktierung der beiden Glühwendeln 4, 5 besteht aus der Abblendkappe 6 und drei Stromzuführungsdrähten 7, 8 und 9 sowie aus einem Quarzglasbalken 10, in dem die Stromzuführungsdrähte 7 bis 9 eingeschmolzen sind. Die Stromzuführungsdrähte 7 bis 9 sind durch die Quetschdichtung 1a hindurchgeführt und jeweils mit einem elektrischen Anschluß 3 der Lampe elektrisch leitend verbunden. Die drei Stromzuführungsdrähte 7 bis 9 werden durch den Quarzglasbalken 10 in einer gemeinsamen Ebene senkrecht zur Längsachse der zweiten Glühwendel 5 fixiert.The frame for holding and making electrical contact between the two filaments 4, 5 consists of the anti-dazzle device 6 and three power supply wires 7, 8 and 9 and a quartz glass beam 10 in which the power supply wires 7 to 9 have melted down. The power supply wires 7 to 9 are through the crimp seal 1a passed and each with an electrical connection 3 of Lamp electrically connected. The three power supply wires 7 to 9 are through the quartz glass beam 10 in a common plane perpendicular to the longitudinal axis the second filament 5 fixed.

Details des Gestells gemäß des ersten Ausführungsbeispiels der Erfindung sind in den Figuren 2, 3 und 4 abgebildet. Der erste Stromzuführungsdraht 7 besitzt ein aus der gemeinsamen Ebene der Stromzuführungsdrähte 7 bis 9 abgewinkeltes Ende 7a, das mit einem Ende der zweiten Glühwendel 5 verschweißt ist. Das andere Ende der zweiten Glühwendel 5 ist mit dem zweiten Stromzuführungsdraht 8 verschweißt, der auch zur Halterung der Abblendkappe 6 dient. Die Schweißverbindung erfolgt beispielsweise mittels eines Lasers oder einer Widerstandsschweißung. Die Enden der aus Wolfram gefertigten Glühwendeln 4, 5 sind jeweils mit einem Molybdänband ummantelt, um die Schweißbarkeit mit den Molybdänstromzuführungen 7, 8, 9 oder der Molybdänkappe 6 zu verbessern. Der zweite Stromzuführungsdraht 8 weist einen im wesentlichen trapezförmig gestalteten Abschnitt 8a auf, der an der zweiten Glühwendel 5 vorbeigeführt, so dass die von der zweiten Glühwendel 5 senkrecht zu ihrer Wendelachse emittierten Lichtstrahlen nicht durch diesen Stromzuführungsdraht 8 behindert werden. Das schräg zur Lampengefäßachse verlaufende Ende 8b des Stromzuführungsdrahtes 8 ist mit der von der ersten Glühwendel 4 abgewandten unteren Seite der Abblendkappe 6 mittels einer Buckelschweißung verbunden. Zu diesem Zweck weist die Unterseite der Abblendkappe 6 zwei schräg zur Lampenachse angeordnete Buckel 6a auf. Der dritte Stromzuführungsdraht 9 verläuft geradlinig und im wesentlichen parallel zur Lampengefäßachse. Er ist mit dem sockelnahen Ende der ersten Glühwendel 4 verschweißt. Das andere Ende der ersten Glühwendel 4 ist mit der ihr zugewandten oberen Seite der Abblendkappe 6 verschweißt. Zu diesem Zweck ist die Oberseite der Abblendkappe 6 mit einer Erhebung 6b versehen, mit der dieses Glühwendelende durch eine Buckelschweißung verbunden ist.Details of the frame according to the first embodiment of the invention are in Figures 2, 3 and 4 shown. The first power supply wire 7 has one the common plane of the power supply wires 7 to 9 angled end 7a, which is welded to one end of the second filament 5. The other end of the second filament 5 is welded to the second power supply wire 8, the also serves to hold the anti-dazzle device 6. The welded connection is made, for example using a laser or resistance welding. The ends of the Filaments 4, 5 made of tungsten are each provided with a molybdenum strip encased to weldability with the molybdenum power supplies 7, 8, 9 or to improve the molybdenum cap 6. The second power supply wire 8 has one substantially trapezoidal section 8a on the second filament 5 passed so that the of the second filament 5 perpendicular to it Helix axis did not emit light rays through this power supply wire 8 be hindered. The end 8b of the oblique to the lamp vessel axis Power supply wire 8 is with the lower facing away from the first filament 4 Side of the anti-dazzle device 6 connected by means of a projection weld. To this Purpose has the bottom of the anti-dazzle device 6 two obliquely to the lamp axis arranged hump 6a. The third power supply wire 9 runs in a straight line and essentially parallel to the lamp vessel axis. He is close to the base End of the first filament 4 welded. The other end of the first filament 4 is welded to the upper side of the anti-dazzle device 6 facing it. To this The top of the anti-dazzle device 6 is provided with an elevation 6b, with which this filament end is connected by a projection weld.

Die Figur 5 zeigt Details des Gestellaufbaus gemäß des zweiten Ausführungsbeispiels der Erfindung. Dieses Ausführungsbeispiel unterscheidet sich von dem oben beschriebenen ersten Ausführungsbeispiel nur durch die Gestaltung des mit dem sockelnahen Ende der transversal ausgerichteten Glühwendel verbundenen dritten Stromzuführungsdrahtes. Aus diesem Grund wird in der Figur 5 für identische Teile die gleichen Bezugszeichen wie in den Figuren 1 bis 4 verwendet, die das erste Ausführungsbeispiel der Erfindung abbilden. Gemäß des zweiten Ausführungsbeispiels besitzt der dritte Stromzuführungsdraht 9 ebenfalls einen im wesentlichen trapezförmig gestalteten Abschnitt 9a, der derart an der zweiten Glühwendel 5 vorbeigeführt ist, dass die von dieser Glühwendel 5 senkrecht zu ihrer Längsachse emittierten Lichtstrahlen von diesem Stromzuführungsdraht 9 nicht abgeschattet werden. In allen andere Details stimmt das zweite Ausführungsbeispiel mit dem ersten überein.Figure 5 shows details of the frame structure according to the second embodiment the invention. This embodiment differs from that above described first embodiment only by the design of the near the base End of the transversely oriented filament connected third Power supply wire. For this reason, in Figure 5 for identical parts the same reference numerals as in Figures 1 to 4 used, the first embodiment map the invention. According to the second embodiment the third power supply wire 9 also has a substantially trapezoidal shape designed section 9a, which leads past the second filament 5 is that those emitted by this filament 5 perpendicular to its longitudinal axis Light rays from this power supply wire 9 are not shadowed. In all other details match the second embodiment with the first.

Die Erfindung beschränkt sich nicht auf die oben näher erläuterten Ausführungsbeispiele. Statt des Quarzbalken 10 kann beispielsweise auch ein Hartglasbalken verwendet werden. Es aber auch möglich, das erfindungsgemäße Gestell ohne einen derartigen Balken herzustellen. Als Ausgangspunkt zur Fertigung des Gestells kann auch eine Metallbrücke dienen, deren Stege zur elektrischen Isolierung der Stromzuführungsdrähte später durchtrennt werden.The invention is not limited to the exemplary embodiments explained in more detail above. Instead of the quartz beam 10, a hard glass beam can also be used, for example become. But it is also possible to use the frame according to the invention without one to produce such beams. As a starting point for the manufacture of the frame also serve a metal bridge, the webs for electrical insulation of the power supply wires to be cut later.

Claims (6)

Glühlampe für Kraftfahrzeugscheinwerfer mit einem im wesentlichen axialsymmetrischen Lampengefäß (1), einer axial im Lampengefäß (1) ausgerichteten ersten Glühwendel (4), einer transversal im Lampengefäß (1) ausgerichteten zweiten Glühwendel (5), einem Gestell zur Halterung und elektrischen Kontaktierung der Glühwendeln (4, 5), das eine Abschattungsvorrichtung (6) für die erste Glühwendel (4) und drei Stromzuführungsdrähte (7, 8, 9) aufweist, dadurch gekennzeichnet, dass die drei Stromzuführungsdrähte (7, 8, 9) in einer gemeinsamen Ebene senkrecht zur Längsachse der zweiten Glühwendel (5) angeordnet sind, mindestens ein Stromzuführungsdraht (8; 9) einen aus der gemeinsamen Ebene herausragenden und an der zweiten Glühwendel (5) vorbeigeführten Abschnitt (8a; 9a) aufweist, der derart geformt ist, dass er außerhalb der hauptsächlichen Lichtabstrahlrichtung der zweiten Glühwendel (5) angeordnet ist. Light bulb for automotive headlights with an essentially axially symmetrical lamp vessel (1), a first filament (4) aligned axially in the lamp vessel (1), a second incandescent filament (5) oriented transversely in the lamp vessel (1), a frame for holding and electrically contacting the incandescent filaments (4, 5), which has a shading device (6) for the first incandescent filament (4) and three power supply wires (7, 8, 9), characterized in that the three power supply wires (7, 8, 9) are arranged in a common plane perpendicular to the longitudinal axis of the second filament (5), at least one power supply wire (8; 9) has a section (8a; 9a) which protrudes from the common plane and leads past the second incandescent filament (5) and is shaped such that it is arranged outside the main light emission direction of the second incandescent filament (5) , Glühlampe nach Anspruch 1, dadurch gekennzeichnet, dass der aus der gemeinsamen Ebene herausragende und an der zweiten Glühwendel (5) vorbeigeführte Abschnitt (8a; 9a) im wesentlichen trapezförmig ausgebildet ist.Incandescent lamp according to Claim 1, characterized in that the section (8a; 9a) which projects from the common plane and passes the second incandescent filament (5) is essentially trapezoidal. Glühlampe nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Ende (8b) des aus der gemeinsamen Ebene herausragenden und an der zweiten Glühwendel (5) vorbeigeführten Abschnitts (8a) schräg zur Lampengefäßachse verläuft und mit der von der ersten Glühwendel (4) abgewandten Seite der Abschattungsvorrichtung (6) verbunden ist.Incandescent lamp according to Claim 1 or 2, characterized in that the end (8b) of the section (8a) which projects from the common plane and passes the second incandescent filament (5) runs obliquely to the axis of the lamp vessel and which is remote from the first incandescent filament (4) Side of the shading device (6) is connected. Glühlampe nach Anspruch 1, dadurch gekennzeichnet, dass das zweite Ende der zweiten Glühwendel (5) mit dem aus der gemeinsamen Ebene herausragenden und an der zweiten Glühwendel (5) vorbeigeführten Abschnitt (8a) verbunden ist. Incandescent lamp according to Claim 1, characterized in that the second end of the second incandescent filament (5) is connected to the section (8a) which protrudes from the common plane and leads past the second incandescent filament (5). Glühlampe nach Anspruch 1, dadurch gekennzeichnet, dass die Abschattungsvorrichtung (6) auf der der ersten Glühwendel (4) zugewandten Seite eine Erhebung (6b) aufweist, die mit dem zweiten Ende der ersten Glühwendel (4) verbunden ist.Incandescent lamp according to claim 1, characterized in that the shading device (6) on the side facing the first filament (4) has an elevation (6b) which is connected to the second end of the first filament (4). Glühlampe nach Anspruch 1, dadurch gekennzeichnet, dass der erste Stromzuführungsdraht (7) einen aus der gemeinsamen Ebene herausragenden, abgewinkelten Abschnitt (7a) aufweist, der mit dem ersten Ende der zweiten Glühwendel (5) verbunden ist.Incandescent lamp according to Claim 1, characterized in that the first power supply wire (7) has an angled section (7a) which projects from the common plane and which is connected to the first end of the second incandescent filament (5).
EP02018370A 2001-09-14 2002-08-14 Incandescent lamp for automobile headlight Expired - Lifetime EP1294013B1 (en)

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DE10145427A DE10145427A1 (en) 2001-09-14 2001-09-14 Light bulb for automotive headlights
DE10145427 2001-09-14

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EP1294013A2 true EP1294013A2 (en) 2003-03-19
EP1294013A3 EP1294013A3 (en) 2006-05-03
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EP (1) EP1294013B1 (en)
JP (1) JP2003132855A (en)
KR (1) KR20030023563A (en)
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HU (1) HUP0202976A3 (en)

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WO2008077768A2 (en) * 2006-12-21 2008-07-03 Osram Gesellschaft mit beschränkter Haftung Lamp with improved geometry of the coiled filament ends
DE102007048387A1 (en) 2007-10-09 2009-04-16 Osram Gesellschaft mit beschränkter Haftung H4 lamp for use as headlight in motor vehicle, has dimmer cap formed in cross section in form of circle segment, where filament is arranged outside center of circle, and dimmer cap is implemented with elliptical cross section
EP1667203A3 (en) * 2004-08-24 2009-06-10 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Electric incandescent lamp

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DE10219729A1 (en) * 2002-05-02 2003-11-13 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Light bulb for automotive headlights
DE10306178A1 (en) * 2003-02-13 2004-08-26 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Bulb for vehicle headlights
DE102004004017A1 (en) * 2004-01-22 2005-08-25 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Electric lightbulb
DE102004053644A1 (en) * 2004-11-03 2006-05-04 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Vehicle headlamp
US7722210B2 (en) * 2008-07-02 2010-05-25 Osram Sylvania Inc. Automotive lamp and reflector for low beam and advanced forward lighting system
JP6133065B2 (en) * 2013-01-24 2017-05-24 スタンレー電気株式会社 Halogen bulb for headlamp
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EP1560258A2 (en) * 2003-12-12 2005-08-03 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Incandescent lamp for vehicle headlamp
EP1560258A3 (en) * 2003-12-12 2008-01-23 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Incandescent lamp for vehicle headlamp
EP1667203A3 (en) * 2004-08-24 2009-06-10 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Electric incandescent lamp
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JP2003132855A (en) 2003-05-09
HU0202976D0 (en) 2002-10-28
ES2295269T3 (en) 2008-04-16
KR20030023563A (en) 2003-03-19
EP1294013B1 (en) 2008-01-02
EP1294013A3 (en) 2006-05-03
DE50211446D1 (en) 2008-02-14
ATE382950T1 (en) 2008-01-15
US20030053309A1 (en) 2003-03-20
DE10145427A1 (en) 2003-04-03
HUP0202976A2 (en) 2003-05-28
US6709130B2 (en) 2004-03-23
HUP0202976A3 (en) 2007-07-30

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