EP1363315B1 - Incandescent lamp for automobile headlight - Google Patents
Incandescent lamp for automobile headlight Download PDFInfo
- Publication number
- EP1363315B1 EP1363315B1 EP03009969A EP03009969A EP1363315B1 EP 1363315 B1 EP1363315 B1 EP 1363315B1 EP 03009969 A EP03009969 A EP 03009969A EP 03009969 A EP03009969 A EP 03009969A EP 1363315 B1 EP1363315 B1 EP 1363315B1
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- EP
- European Patent Office
- Prior art keywords
- filament
- shading device
- incandescent
- coil
- lamp
- 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.)
- Expired - Lifetime
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/26—Screens; Filters
-
- 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
Definitions
- the invention relates to an incandescent lamp for motor vehicle headlights according to the preamble of patent claim 1.
- Such a light bulb is for example in the international patent application with the publication number WO 98/38670 disclosed.
- This publication describes an incandescent lamp with a secondary filament for generating the low beam and a main filament for generating the high beam in a motor vehicle headlight.
- the incandescent lamp also has a shading device arranged in the lamp vessel, which shields a part of the light generated by the auxiliary filament and is used to generate the bright-dark boundary of the low beam.
- a spiral outlet of the secondary spiral is designed as an end which is angled parallel to the spiral axis and which is welded to the shading device.
- the EP 0 817 243 A2 discloses a motor vehicle headlight incandescent lamp with a dimming cap and a Abbleriumtglühwendel having a connected to a substantially parallel to the helical axis of the Abblertztglühwendel extending edge portion of the dimming cap coil outlet.
- the light bulb for motor vehicle headlights has a lamp vessel and at least one arranged therein filament and a arranged inside the lamp vessel shading device, wherein the shading device an edge having at least one, substantially parallel to the helical axis of the at least one filament extending edge portion and the at least one filament has a Wendelabgang which is connected to this edge portion of the shading device.
- This arrangement of the spiral outlet ensures that the spiral outlet for connection to the shading device does not have to be angled. Accordingly, the manufacture and assembly of the filament simplify.
- the shading device is advantageously equipped with a tab which is integrally formed on the at least one, substantially parallel to the helical axis of the at least one filament extending edge portion and extending transversely to this edge portion , This tab is ideal for making a welded joint with the coil outlet.
- the spiral outlet is advantageously covered with a metal foil. It allows attachment of the at least one filament to the shading device without causing undesirable torsion or deformation of the filament and prevents embrittlement of the filament outlet when welding to the shading device.
- the metal foil is preferably made of a refractory metal such as molybdenum, tantalum, tungsten or an alloy of the foregoing metals to withstand the high temperature during lamp operation and to ensure good bonding between the molybdenum or molybdenum alloy shielding device.
- a refractory metal such as molybdenum, tantalum, tungsten or an alloy of the foregoing metals to withstand the high temperature during lamp operation and to ensure good bonding between the molybdenum or molybdenum alloy shielding device.
- the two filament outlets of the at least one incandescent filament are arranged such that the portions of the filament outlets illuminating during lamp operation, ie those portions of the filament outlets which directly adjoin the first or last turn of the part of the filament serving for generating light, are connected to the filament part of the filament surface remote from the shading device.
- these luminous sections of the spiral outlets do not become that of the shading device facing region of the filament surface, whose projection or its image is used to generate the bright-dark boundary. Therefore, neither the filament outlets themselves nor their mirror images generated by the lamp vessel can interfere with the formation of a sharp bright-dark border in the headlight.
- FIG. 1 preferred embodiment of the invention is a two-filament halogen incandescent lamp, which is intended for use in a motor vehicle headlight.
- This lamp has a glassy, substantially cylindrical lamp vessel 1 with two included filaments 2, 3, one of which is aligned axially and the other transversely to the longitudinal axis A of the lamp cap.
- the axially aligned incandescent filament 2 is partially surrounded by a shading device 4 which is likewise arranged inside the lamp vessel 1.
- For holding and power supply of the filaments 2, 3 and the shading device 4 are three power supply lines 5, 6 and 7, which are led out of the socket near end of the lamp vessel 1.
- the sockelnahe End of the lamp vessel 1 is anchored with a press fit in a recess of a metallic holder 8, which in turn is part of the lamp cap 9.
- the metallic holder 8 is fixed in the metallic adjusting ring 10, which is welded to the reference ring 11.
- the reference ring 11 has three reference lugs 11a, 11b, which extend radially outwards, essentially perpendicular to the longitudinal axis A and lie in a common plane.
- the reference ring 11 is welded to the metallic, annular base flange 12, the flange plane is arranged substantially perpendicular to the longitudinal axis A.
- the base flange 12 has three evenly arranged along its circumference ring, resiliently formed tabs 12a, 12b, which develop a spring action in the longitudinal direction A of the lamp. As an abutment to the spring tabs serve the reference lugs 11a, 11b.
- a pressure spring 19 For lateral support of the lamp at the edge of the headlight reflector opening is a pressure spring 19 which projects through an opening in the annular collar 12d of the base flange 12 to the outside.
- the plastic ring 13 connects, from the three metallic contact lugs 13a, 13b protrude, which are each electrically connected to a power supply 5, 6, 7 and form the electrical contacts of the headlamp.
- the three contact lugs 13a, 13b and in particular also their contact surfaces are arranged in a common plane perpendicular to the axis of the plastic ring 13 and thus also substantially perpendicular to the longitudinal axis A.
- the remote from the lamp vessel 1 end of the lamp cap 9 is formed by the plastic grip part 14 which is fixed by a non-detachable plug connection to the plastic ring 13 and the base flange 12.
- the handle part 14 has a perpendicular to the longitudinal axis A, along a diameter of the plastic ring 13 extending web 14a.
- the web 14a can serve as a handle for locking and unlocking the bayonet lock when changing the lamp.
- FIGS 2 and 3 show details of the shading device 4 and the filament used to generate the low beam 2.
- This filament 2 the Also referred to as secondary coil 2
- Both spiral outlets 2a, 2b are each encapsulated by a molybdenum foil 20, 21, which serve as a welding aid for connecting the spiral outlets 2a and 2b to the shading device 4 or to the power supply 5.
- the shading device 4 has two mutually opposite edge portions 41, 42 which extend substantially parallel to the helical axis of the secondary helix 2.
- the shading device 4 is provided with a tab 43, which is integrally formed on the edge portion 41 and extends transversely to this edge portion 41 to the outside, so that the free end of the tab 43 is directed away from the secondary spiral 2.
- the tab 43 is angled from the edge portion 41.
- the spiral outlet 2 a covered by the molybdenum foil 20 is welded to the tab 43. In a plane perpendicular to the helical axis of the secondary helix 2, the two helical outlets 2a, 2b together form an angle ⁇ of 115 degrees.
- the free end of the tab 43 may also point in the direction of the secondary spiral 2.
- the spiral outlets 2a, 2b may be formed as uncoiled ends of the secondary spiral 2, as shown in FIGS. 2 and 3, or alternatively as coiled ends of the secondary spiral 2.
- the filament outlets 2a, 2b are uncoiled and in the case of a double-wound incandescent filament 2, the filament outlets 2a, 2b are simply coiled.
- Figure 4 shows a second embodiment of the invention in which the free end of the tab 43 'extends in the direction of the secondary helix 2 and thus points in the opposite direction as the tab 43 of the first embodiment.
- the second is consistent with the first embodiment.
- the tab 43 ' is integrally formed on the edge portion 41, and the coil end 2a wrapped by the molybdenum foil 20 is welded to the tab 43'. Therefore, the same reference numerals have been used in Figures 3 and 4 for identical parts.
- the coil outlet 2a to the shading device by means of a hook-shaped or U-shaped tab (not shown) formed on the shading device 4 and having a gap for supporting the coil outlet 2a, the gap width being so dimensioned is that the helical departure 2a is arranged with a press fit in the gap.
- the helical departure 2a may be connected to the tab by a weld in order to achieve the lowest possible contact resistance between the helical departure 2a and the tab.
- the U-legs of the tab can be connected to each other by a weld to ensure a permanent press fit of the helical departure 2a in the gap. In this type of connection, if necessary, the wrapping of the helical departure 2a with a molybdenum foil 20 may also be dispensed with.
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
Description
Die Erfindung betrifft eine Glühlampe für Kraftfahrzeugscheinwerfer gemäß des Oberbegriffs des Patentanspruchs 1.The invention relates to an incandescent lamp for motor vehicle headlights according to the preamble of
Eine derartige Glühlampe ist beispielsweise in der internationalen Patentanmeldung mit der Veröffentlichungsnummer
Die
Es ist die Aufgabe der Erfindung, eine gattungsgemäße Glühlampe mit einer verbesserten Aufhängung für die mit der Abschattungsvorrichtung verbundene Glühwendel bereitzustellen.It is the object of the invention to provide a generic incandescent lamp with an improved suspension for the associated with the shading device filament.
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
Die erfindungsgemäße Glühlampe für Kraftfahrzeugscheinwerfer besitzt ein Lampengefäß und mindestens eine darin angeordnete Glühwendel sowie eine innerhalb des Lampengefäßes angeordnete Abschattungsvorrichtung, wobei die Abschattungsvorrichtung einen Rand mit mindestens einem, im wesentlichen parallel zur Wendelachse der mindestens einen Glühwendel verlaufenden Randabschnitt aufweist und die mindestens eine Glühwendel einen Wendelabgang besitzt, der mit diesem Randabschnitt der Abschattungsvorrichtung verbunden ist. Durch diese Anordnung des Wendelabgangs ist gewährleistet, dass der Wendelabgang zum Verbinden mit der Abschattungsvorrichtung nicht abgewinkelt werden muss. Dementsprechend vereinfachen sich die Herstellung und die Montage der Glühwendel.The light bulb for motor vehicle headlights according to the invention has a lamp vessel and at least one arranged therein filament and a arranged inside the lamp vessel shading device, wherein the shading device an edge having at least one, substantially parallel to the helical axis of the at least one filament extending edge portion and the at least one filament has a Wendelabgang which is connected to this edge portion of the shading device. This arrangement of the spiral outlet ensures that the spiral outlet for connection to the shading device does not have to be angled. Accordingly, the manufacture and assembly of the filament simplify.
Um eine möglichst einfache Verbindung zwischen dem Wendelabgang und der Abschattungsvorrichtung zu gewährleisten, ist die Abschattungsvorrichtung vorteilhafterweise mit einer Lasche ausgestattet, die an dem mindestens einen, im wesentlichen parallel zur Wendelachse der mindestens einen Glühwendel verlaufenden Randabschnitt angeformt ist und die sich quer zu diesem Randabschnitt erstreckt. Diese Lasche eignet sich vorzüglich zur Herstellung einer Schweißverbindung mit dem Wendelabgang. Um die Schweißverbindung weiter zu verbessern, ist der Wendelabgang vorteilhafterweise mit einer Metallfolie umhüllt. Sie ermöglicht eine Befestigung der mindestens einen Glühwendel an der Abschattungsvorrichtung ohne dabei eine unerwünschte Torsion oder Deformation der Glühwendel zu verursachen und verhindert eine Versprödung des Wendelabgangs beim Verschweißen mit der Abschattungsvorrichtung. Die Metallfolie besteht vorzugsweise aus einem hochschmelzenden Metall wie zum Beispiel Molybdän, Tantal, Wolfram oder einer Legierung der vorgenannten Metalle, um der hohen Temperatur während des Lampenbetriebs standzuhalten und um eine gute Verbindung zwischen der aus Molybdän oder aus einer Molybdänlegierung bestehenden Abschattungsvorrichtung zu gewährleisten.In order to ensure the simplest possible connection between the spiral outlet and the shading device, the shading device is advantageously equipped with a tab which is integrally formed on the at least one, substantially parallel to the helical axis of the at least one filament extending edge portion and extending transversely to this edge portion , This tab is ideal for making a welded joint with the coil outlet. In order to further improve the welded connection, the spiral outlet is advantageously covered with a metal foil. It allows attachment of the at least one filament to the shading device without causing undesirable torsion or deformation of the filament and prevents embrittlement of the filament outlet when welding to the shading device. The metal foil is preferably made of a refractory metal such as molybdenum, tantalum, tungsten or an alloy of the foregoing metals to withstand the high temperature during lamp operation and to ensure good bonding between the molybdenum or molybdenum alloy shielding device.
Vorteilhafterweise sind die beiden Wendelabgänge der mindestens einen Glühwendel derart angeordnet, dass die während des Lampenbetriebs leuchtenden Abschnitte der Wendelabgänge - das sind diejenigen Abschnitte der Wendelabgänge, die sich unmittelbar an die erste bzw. letzte Windung des der Lichterzeugung dienenden Teils der Glühwendel anschließen - zu dem von der Abschattungsvorrichtung abgewandten Bereich der Glühwendeloberfläche gehören. Das heißt insbesondere, dass diese leuchtenden Abschnitte der Wendelabgänge nicht zu dem der Abschattungsvorrichtung zugewandten Bereich der Glühwendeloberfläche gehören, dessen Projektion bzw. dessen Abbild zur Erzeugung der Hell-Dunkelgrenze verwendet wird. Daher können weder die Wendelabgänge selbst noch ihre vom Lampengefäß generierten Spiegelbilder die Ausbildung einer scharfen Hell-Dunkelgrenze im Scheinwerfer stören.Advantageously, the two filament outlets of the at least one incandescent filament are arranged such that the portions of the filament outlets illuminating during lamp operation, ie those portions of the filament outlets which directly adjoin the first or last turn of the part of the filament serving for generating light, are connected to the filament part of the filament surface remote from the shading device. This means, in particular, that these luminous sections of the spiral outlets do not become that of the shading device facing region of the filament surface, whose projection or its image is used to generate the bright-dark boundary. Therefore, neither the filament outlets themselves nor their mirror images generated by the lamp vessel can interfere with the formation of a sharp bright-dark border in the headlight.
Außerdem bilden vorteilhafterweise die beiden Wendelabgänge der mindestens einen Glühwendel in einer Ebene senkrecht zur Wendelachse miteinander einen Winkel zwischen 90 Grad und 130 Grad. Durch diese Maßnahme lassen sich die mechanischen Spannungen in der mindestens einen Glühwendel minimieren.In addition, advantageously form the two Wendelabgänge the at least one filament in a plane perpendicular to the helix axis with each other an angle between 90 degrees and 130 degrees. By this measure, the mechanical stresses in the at least one filament can be minimized.
Nachstehend wird die Erfindung anhand eines bevorzugten Ausführungsbeispiels näher erläutert. Es zeigen:
Figur 1- Eine Seitenansicht einer Glühlampe gemäß des bevorzugten Ausführungsbeispiels der Erfindung in schematischer Darstellung
Figur 2- Eine Draufsicht auf die Nebenwendel und die Abschattungsvorrichtung der in
Figur 1 abgebildeten Glühlampe - Figur 3
- Eine Draufsicht auf die Nebenwendel und die Abschattungsvorrichtung in einer um 90 Grad gegenüber der in
Figur 2 gedrehten Darstellung Figur 4- Eine Darstellung eines zweiten Ausführungsbeispiels der Erfindung
- FIG. 1
- A side view of an incandescent lamp according to the preferred embodiment of the invention in a schematic representation
- FIG. 2
- A plan view of the auxiliary coil and the shading device of the light bulb shown in Figure 1
- FIG. 3
- A plan view of the auxiliary spiral and the shading device in a 90 degrees relative to the rotated in Figure 2 representation
- FIG. 4
- An illustration of a second embodiment of the invention
Bei dem in Figur 1 abgebildeten bevorzugten Ausführungsbeispiel der Erfindung handelt es sich um eine Zweifaden-Halogenglühlampe, die zum Einsatz in einen Kraftfahrzeugscheinwerfer vorgesehen ist. Diese Lampe besitzt ein gläsernes, im wesentlichen zylindrisches Lampengefäß 1 mit zwei darin eingeschlossenen Glühwendeln 2, 3, von denen eine axial und die andere transversal zur Längsachse A des Lampensockels ausgerichtet ist. Die axial ausgerichtete Glühwendel 2 ist teilweise von einer ebenfalls innerhalb des Lampengefäßes 1 angeordneten Abschattungsvorrichtung 4 umgeben. Zur Halterung und Spannungsversorgung der Glühwendeln 2, 3 und der Abschattungsvorrichtung 4 dienen drei Stromzuführungen 5, 6 und 7, die aus dem sockelnahen Ende des Lampengefäßes 1 herausgeführt sind. Das sockelnahe Ende des Lampengefäßes 1 ist mit Klemmsitz in einer Aussparung eines metallischen Halters 8 verankert, der seinerseits Bestandteil des Lampensockels 9 ist. Der metallische Halter 8 ist in dem metallischen Justierring 10 fixiert, der mit dem Referenzring 11 verschweißt ist. Der Referenzring 11 besitzt drei sich im wesentlichen senkrecht zur Längsachse A radial nach außen erstreckende, in einer gemeinsamen Ebene liegende Referenznasen 11a, 11b. Der Referenzring 11 ist mit dem metallischen, ringförmigen Sockelflansch 12 verschweißt, dessen Flanschebene im wesentlichen senkrecht zur Längsachse A angeordnet ist. Der Sockelflansch 12 besitzt drei gleichmäßig entlang seines Ringumfangs angeordnete, federnd ausgebildete Laschen 12a, 12b, die eine Federwirkung in Längsrichtung A der Lampe entfalten. Als Gegenlager zu den Federlaschen dienen die Referenznasen 11a, 11b. Die Referenznasen 11a, 11b bilden zusammen mit dem Sockelflansch 12 und seinen Laschen 12a, 12b sowie der entsprechend als Lampenfassung gestalteten Öffnung des Scheinwerferreflektors einen Bajonettverschluss. Zur seitlichen Abstützung der Lampe am Rand der Scheinwerferreflektoröffnung dient eine Andruckfeder 19, die durch einen Durchbruch im ringförmigen Kragen 12d des Sockelflansches 12 nach außen ragt.In the illustrated in Figure 1 preferred embodiment of the invention is a two-filament halogen incandescent lamp, which is intended for use in a motor vehicle headlight. This lamp has a glassy, substantially
An den Sockelflansch 12 schließt sich der Kunststoffring 13 an, aus dem drei metallische Kontaktfahnen 13a, 13b herausragen, die jeweils mit einer Stromzuführung 5, 6, 7 elektrisch leitend verbunden sind und die elektrischen Kontakte der Scheinwerferlampe bilden. Die drei Kontaktfahnen 13a, 13b und insbesondere auch ihre Kontaktflächen sind in einer gemeinsamen Ebene senkrecht zur Achse des Kunststoffrings 13 und damit auch im wesentlichen senkrecht zur Längsachse A angeordnet. Das von dem Lampengefäß 1 abgewandte Ende des Lampensockels 9 wird von dem aus Kunststoff bestehenden Griffteil 14 gebildet, das durch eine unlösbare Steckverbindung an dem Kunststoffring 13 und an dem Sockelflansch 12 fixiert ist. Das Griffteil 14 weist einen senkrecht zur Längsachse A, entlang eines Durchmessers des Kunststoffrings 13 verlaufenden Steg 14a auf. Der Steg 14a kann als Griff zum Ver- und Entriegeln des Bajonettverschlusses beim Lampenwechsel dienen.To the
Die Figuren 2 und 3 zeigen Details der Abschattungsvorrichtung 4 und der zur Erzeugung des Abblendlichts verwendeten Glühwendel 2. Diese Glühwendel 2, die auch als Nebenwendel 2 bezeichnet wird, besitzt einen ersten Wendelabgang 2a, der mit der Abschattungsvorrichtung 4 verbunden ist, und einen zweiten Wendelabgang 2b, der mit dem Stromzuführungsdraht 5 verbunden ist. Beide Wendelabgänge 2a, 2b sind jeweils mit Klemmsitz von einer Molybdänfolie 20, 21 umhüllt, die als Schweißhilfe zum Verbinden der Wendelabgänge 2a und 2b mit der Abschattungsvorrichtung 4 bzw. mit der Stromzuführung 5 dienen. Die Abschattungsvorrichtung 4 besitzt zwei einander gegenüberliegende Randabschnitte 41, 42, die im wesentlichen parallel zur Wendelachse der Nebenwendel 2 verlaufen. Die Abschattungsvorrichtung 4 ist mit einer Lasche 43 versehen, die an den Randabschnitt 41 angeformt ist und sich quer zu diesem Randabschnitt 41 nach außen erstreckt, so dass das freie Ende der Lasche 43 von der Nebenwendel 2 weg gerichtet ist. Außerdem ist die Lasche 43 von dem Randabschnitt 41 abgewinkelt. Der von der Molybdänfolie 20 umhüllte Wendelabgang 2a ist mit der Lasche 43 verschweißt. In einer Ebene senkrecht zur Wendelachse der Nebenwendel 2 bilden die beiden Wendelabgänge 2a, 2b miteinander einen Winkel α von 115 Grad.Figures 2 and 3 show details of the
Die Erfindung beschränkt sich nicht auf das oben näher erläuterte Ausführungsbeispiel. Beispielsweise kann das freie Ende der Lasche 43 auch in Richtung der Nebenwendel 2 weisen. Die Wendelabgänge 2a, 2b können als ungewendelte Enden der Nebenwendel 2, wie in den Figuren 2 und 3 abgebildet, oder alternativ auch als gewendelte Enden der Nebenwendel 2 ausgebildet sein. Im Falle einer einfach gewendelten Glühwendel 2 sind die Wendelabgänge 2a, 2b ungewendelt und im Falle einer doppelt gewendelten Glühwendel 2 sind die Wendelabgänge 2a, 2b einfach gewendelt. Für die Schweißverbindung zwischen der Nebenwendel 2 und der Abschattungsvorrichtung 4 bzw. der Stromzuführung 5 ist das aber unerheblich, da die Molybdänfolien 20, 21 für beide Typen von Wendelabgängen eine gute Schweißbarkeit ermöglichen.The invention is not limited to the embodiment explained in more detail above. For example, the free end of the
Figur 4 zeigt ein zweites Ausführungsbeispiel der Erfindung, bei dem das freie Ende der Lasche 43' sich in Richtung der Nebenwendel 2 erstreckt und damit in die entgegengesetzte Richtung wie die Lasche 43 des ersten Ausführungsbeispiels weist. In allen anderen Details stimmt das zweite mit dem ersten Ausführungsbeispiel überein.Figure 4 shows a second embodiment of the invention in which the free end of the tab 43 'extends in the direction of the
Insbesondere ist die Lasche 43' an den Randabschnitt 41 angeformt und der von der Molybdänfolie 20 umwickelte Wendelabgang 2a ist mit der Lasche 43' verschweißt. Daher wurden in den Figuren 3 und 4 für identische Teile dieselben Bezugszeichen verwendet.In particular, the tab 43 'is integrally formed on the
Ferner ist es auch möglich, den Wendelabgang 2a mittels einer hakenförmigen oder U-förmigen Lasche (nicht abgebildet), die an die Abschattungsvorrichtung 4 angeformt ist und einen Spalt zur Halterung des Wendelabgangs 2a besitzt, an der Abschattungsvorrichtung zu befestigen, wobei die Spaltbreite so dimensioniert ist, dass der Wendelabgang 2a mit Klemmsitz in dem Spalt angeordnet ist. Zusätzlich kann der Wendelabgang 2a mit der Lasche durch eine Schweißung verbunden sein, um einen möglichst geringen Kontaktwiderstand zwischen dem Wendelabgang 2a und der Lasche zu erreichen. Außerdem können die U-Schenkel der Lasche miteinander durch eine Schweißung verbunden sein, um einen dauerhaften Klemmsitz des Wendelabgangs 2a in dem Spalt zu gewährleisten. Bei dieser Art der Verbindung kann gegebenenfalls auch auf die Umhüllung des Wendelabgangs 2a mit einer Molybdänfolie 20 verzichtet werden.Further, it is also possible to fix the
Claims (4)
- Incandescent lamp for motor vehicle headlights that has a lamp vessel (1) and at least one incandescent filament (2) arranged therein, as well as a shading device (4) arranged inside the lamp vessel (1), the shading device (4) having an edge with at least one edge section (41) running substantially parallel to the coil axis of the at least one incandescent filament (2), and the at least one incandescent filament (2) having a first coil exit (2a) that is joined to the abovementioned edge section (41), and a second coil exit (2b), characterized in that the first coil exit (2a) forms with the second coil exit (2b) in a plane perpendicular to the coil axis of this incandescent filament (2) an angle (α) which is greater than or equal to 115 degrees and less than 130 degrees.
- Incandescent lamp according to Claim 1, characterized in that the shading device (4) has a lug (43; 43') that is integrally formed on the at least one edge section (41) running substantially parallel to the coil axis of the at least one incandescent filament (4), and that extends transverse to this edge section (41), the coil exit (2a) being fastened on the lug (43; 43') by a welded joint.
- Incandescent lamp according to Claim 1 or 2, characterized in that the coil exit (2a) is sheathed with a metal foil (20).
- Incandescent lamp according to Claim 3, characterized in that the metal foil (20) consists of molybdenum, tantalum, tungsten or an alloy of these metals, and the shading device (4) consists of molybdenum or a molybdenum alloy.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10219729A DE10219729A1 (en) | 2002-05-02 | 2002-05-02 | Light bulb for automotive headlights |
| DE10219729 | 2002-05-02 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1363315A2 EP1363315A2 (en) | 2003-11-19 |
| EP1363315A3 EP1363315A3 (en) | 2005-11-16 |
| EP1363315B1 true EP1363315B1 (en) | 2007-12-12 |
Family
ID=29224999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03009969A Expired - Lifetime EP1363315B1 (en) | 2002-05-02 | 2003-04-30 | Incandescent lamp for automobile headlight |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6879102B2 (en) |
| EP (1) | EP1363315B1 (en) |
| JP (1) | JP2003346736A (en) |
| KR (1) | KR20030086419A (en) |
| AT (1) | ATE381113T1 (en) |
| CA (1) | CA2427422A1 (en) |
| DE (2) | DE10219729A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10306178A1 (en) * | 2003-02-13 | 2004-08-26 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Bulb for vehicle headlights |
| EP1560258A3 (en) * | 2003-12-12 | 2008-01-23 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Incandescent lamp for vehicle headlamp |
| AT8564U1 (en) * | 2005-06-29 | 2006-09-15 | Plansee Se | HALOGEN LIGHT BULB WITH MOUNTING CAP OF MO-ALLOY |
| US20070108882A1 (en) * | 2005-11-16 | 2007-05-17 | Schneider Jerome J Jr | Incandescent lamp including self sealing mount base |
| DE102006060025A1 (en) * | 2006-12-19 | 2008-06-26 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Welding aid for a filament |
| DE202008014004U1 (en) | 2008-10-21 | 2009-12-03 | Osram Gesellschaft mit beschränkter Haftung | halogen bulb |
| WO2010151708A2 (en) * | 2009-06-24 | 2010-12-29 | Cunningham David W | Incandescent lamp incorporating reflective filament supports and method for making it |
| US9966246B2 (en) * | 2013-05-13 | 2018-05-08 | Koninklijke Philips N.V. | Double-filament incandescent lamp for automotive vehicle front lighting |
| CN103337448A (en) * | 2013-07-01 | 2013-10-02 | 江苏晨阳电光源有限公司 | Manufacturing technology for dimension positioning to road vehicle head light |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2733377A (en) * | 1951-10-06 | 1956-01-31 | Incandescent lamp comprising two | |
| GB1313531A (en) * | 1970-04-16 | 1973-04-11 | Thorn Electrical Ind Ltd | Incandescent lamp manufacture |
| DE8121528U1 (en) * | 1981-07-22 | 1982-11-18 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München | TWO-THREAD HALOGEN BULB FOR MOTOR VEHICLE HEADLIGHTS |
| FR2568721B1 (en) * | 1984-08-03 | 1986-12-05 | Lampes Elect Fab Reunies | ELECTRIC INCANDESCENT LAMP FOR MOTOR VEHICLE |
| DE3616673A1 (en) * | 1986-05-16 | 1987-11-19 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | HALOGEN BULB |
| JP3047209B2 (en) * | 1995-03-16 | 2000-05-29 | 株式会社小糸製作所 | Filament support structure for light bulb and method for fixing filament to support |
| JPH08264162A (en) * | 1995-03-22 | 1996-10-11 | Koito Mfg Co Ltd | Incandescent lamp and its manufacture |
| DE19544012A1 (en) * | 1995-11-27 | 1997-05-28 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Electric light bulb with anti-dazzle device and method for producing such a lamp and anti-dazzle device for an electric light bulb |
| DE69723365T2 (en) * | 1996-06-04 | 2004-02-12 | Honda Giken Kogyo K.K. | Lamp bulb for vehicles |
| JP3771322B2 (en) * | 1996-06-04 | 2006-04-26 | 本田技研工業株式会社 | Automotive bulb |
| JP4057090B2 (en) * | 1996-06-06 | 2008-03-05 | 本田技研工業株式会社 | Light bulb for vehicle |
| DE19707245A1 (en) * | 1997-02-25 | 1998-08-27 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Method of making an electric light bulb |
| JP2001006626A (en) * | 1999-06-22 | 2001-01-12 | Koito Mfg Co Ltd | Electric lamp bulb and method for coating the same |
| DE10145427A1 (en) * | 2001-09-14 | 2003-04-03 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Light bulb for automotive headlights |
-
2002
- 2002-05-02 DE DE10219729A patent/DE10219729A1/en not_active Withdrawn
-
2003
- 2003-04-30 AT AT03009969T patent/ATE381113T1/en not_active IP Right Cessation
- 2003-04-30 EP EP03009969A patent/EP1363315B1/en not_active Expired - Lifetime
- 2003-04-30 DE DE50308757T patent/DE50308757D1/en not_active Expired - Fee Related
- 2003-05-01 KR KR10-2003-0027932A patent/KR20030086419A/en not_active Withdrawn
- 2003-05-01 US US10/426,652 patent/US6879102B2/en not_active Expired - Fee Related
- 2003-05-01 CA CA002427422A patent/CA2427422A1/en not_active Abandoned
- 2003-05-02 JP JP2003127075A patent/JP2003346736A/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CA2427422A1 (en) | 2003-11-02 |
| JP2003346736A (en) | 2003-12-05 |
| EP1363315A2 (en) | 2003-11-19 |
| ATE381113T1 (en) | 2007-12-15 |
| US20030205972A1 (en) | 2003-11-06 |
| DE50308757D1 (en) | 2008-01-24 |
| DE10219729A1 (en) | 2003-11-13 |
| US6879102B2 (en) | 2005-04-12 |
| KR20030086419A (en) | 2003-11-10 |
| EP1363315A3 (en) | 2005-11-16 |
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