EP2106615B1 - Dipping cap comprising a filament - Google Patents

Dipping cap comprising a filament Download PDF

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Publication number
EP2106615B1
EP2106615B1 EP07847862.5A EP07847862A EP2106615B1 EP 2106615 B1 EP2106615 B1 EP 2106615B1 EP 07847862 A EP07847862 A EP 07847862A EP 2106615 B1 EP2106615 B1 EP 2106615B1
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EP
European Patent Office
Prior art keywords
filament
lamp
dazzle device
helix
outgoing
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
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EP07847862.5A
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German (de)
French (fr)
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EP2106615A2 (en
Inventor
Frank Auer
Gerhard Behr
Christian Seichter
Sascha Zelt
Peter Helbig
Klaus Wittmann
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Osram GmbH
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Osram GmbH
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Publication of EP2106615A2 publication Critical patent/EP2106615A2/en
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Publication of EP2106615B1 publication Critical patent/EP2106615B1/en
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    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/26—Screens; Filters

Definitions

  • the invention is based on a dimming cap with helix for two-filament lamps, which are used in particular in vehicle headlights.
  • WO 98/38670 is a two-filament halogen incandescent lamp is known, which has a one side densely squeezed lamp bulb, the pinch seal is clamped in a holder part made of stainless steel. Within the lamp envelope are two filaments, which are connected via a total of three melted power supplies or molybdenum foils and associated power supply to a lamp base.
  • a spiral outlet 8 extends to the weld 10, at which the filament outlet 8 with the transverse rib 4 is welded by projection welding.
  • the distance between an exit of an in Fig. 1 not shown socket-side Wendelabgangs from the coil 2 and the weld 10 has the dimension A of 9.7 mm, while the distance between the outlet of the socket-side helical departure from the coil 1 and the end face of the welding flag 6 has the dimension B of 11.9 mm ,
  • the anti-dazzle device shown which is used in particular for H4 lamps, is responsible for the cut-off line.
  • the dimming cap 2 is made of molybdenum sheet.
  • the object of the present invention is to provide a Abblendkappe with helix for a two-head lamp, in which a cost reduction, an accurate determination of the helical position and low line losses can be achieved.
  • a dipped cap with helix for a two-filament lamp, wherein the dimension between an exit of a socket-side helix exit from the helix and the point at opposite to the socket-side helix exit arranged with the Abblendkappe welded helical departure between about 5.2 mm and smaller than 9, 7 mm, and wherein the dimension between the outlet of the socket-side helical departure from the helix and the end face of the anti-dazzle device, which is adjacent to the helical departure, at which the helical departure is welded to the anti-dazzle device, is between approximately 5.9 mm and smaller than 11, 9 mm.
  • This can be implemented in terms of cost and quality optimized dimming, especially when the Abblendkappen are not responsible for the cut-off for vehicle headlamps.
  • the anti-dazzle device be connected to the helical exit by projection welding. This allows a secure connection between the parts to be welded without a filler material and thus implement without the introduction of additional material.
  • the weld boss on the projection for the projection welding in cross section has the shape of a ring portion, preferably at an angle of 90 °.
  • the welding lug of the anti-dazzle device can be deformed in a simple manner by the introduction of a transverse rib, and an attachment of helical outlets in any relative position to the transverse rib can be implemented.
  • a flat surface of the anti-dazzle device is connected to the helical outlet.
  • the helical departure can extend parallel to the longitudinal axis of the helix and a uniform spacing of the helix from the bottom of the anti-dazzle device can be implemented.
  • the anti-dazzle device with a coil for a halogen incandescent lamp is designed for a vehicle headlight, so that, for example, the use in daytime running lights is possible.
  • the two-filament lamp is a two-filament headlamp, as in this way low beam and high beam or high beam and daytime running lights can be realized in a lamp.
  • the two-filament lamp is a two-filament halogen lamp, since in this way a special light intensity with excellent quality of light can be implemented.
  • a headlamp is provided with a lamp which has a Abblendkappe with helix, with an aperture for the light-dark boundary outside the lamp vessel of the two-filament lamp and in the limited space by the reflector is responsible.
  • Fig. 2 shows a provided with a lamp base 20 halogen bulb 22 for a vehicle headlight.
  • the halogen incandescent lamp 22 has a glassy, substantially cylindrical lamp vessel 24, in the interior of which two filaments 26, 28 aligned parallel to the lamp vessel axis are arranged, which serve, for example, to produce a high beam and a daytime running light or a high beam and a low beam.
  • the filaments 26, 28 are formed, for example, as single or double turned tungsten wires.
  • the helical outlets 30, 32 of the helix 26 and the helical outlets 34, 36 of the helix 28 are preferably wrapped with a molybdenum foil, which serves as a welding aid in welding the helical outlets to the power supply lines for the incandescent filament.
  • a sealed end 38 of the lamp vessel 24 is anchored in the lamp base 20.
  • the lamp vessel cap 40 facing away from the lamp cap 20 may be provided with an opaque coating 40.
  • the incandescent filament 26, which is provided adjacent to the lamp vessel tip 40, is disposed adjacent to a shield plate 42 formed of molybdenum sheet metal.
  • the dimming cap 42 and the filament 62 are in the illustrations of Fig. 3, 4 and 5 magnified highlighted.
  • the filament outlet 30 of the incandescent filament 26 facing the opaque coating 40 is welded to the antiglare cap 42 in an edge region thereof, while the bottom of the trough-type antiglare cap 42 is welded to a current supply 44.
  • the filament outlet 32 of the filament 26 and the filament outlet 34 of the filament 28 are welded to a power supply 46, while the filament outlet 36 of the filament 28 is welded to a power supply 48.
  • the three power supply wires 44, 46, 48 are fixed via two fused quartz glass webs 50, so that the power supply 44, 46, 48 are arranged in a plane.
  • the power supply lines 44, 46, 48 extend through the sealed end 38 of the lamp vessel 24 and are in electrical connection with the contact lug 52, 54, 56 on the lamp base 20.
  • quartz glass molybdenum foils are provided in the pinch.
  • the three contact lugs 52, 54, 56 protrude laterally with respect to the central axis of the lamp vessel 24 from the lamp base 20 and form the electrical connections of the halogen lamp.
  • Fig. 3 shows the Abblendkappe 62, denoted by the reference numeral 42 in Fig. 2 only indicated schematically, in side view.
  • the anti-dazzle device 62 has a trough-like section 64 which can be stabilized, for example, by at least one rib, not shown in the figures.
  • the welding lug 6 is connected via a connecting bevel 66 of the trough-like portion 64 with the trough-like portion 64 and has a transverse rib 70, over which the helical outlet 30 of the incandescent filament 26 with the Abblendkappe 62 is welded.
  • the spiral outlet 32 is not shown, but only the location of the exit of the socket-side helical outlet 32 from the coil 26th
  • the distance of the welding point 72 of the helical departure 30 with the transverse rib 70 from this outlet of the base-side helical departure 32 from the helix 26 is designated A, while the distance between the end face 74 of the welding tail 68 from the exit of the socket-side helical departure 32 from the helix 26 with B. is designated.
  • the measure of the distance of the outlet of the socket-side helical departure from the helix with respect to the base is referred to as e-dimension according to ECE R37.
  • the distance measure A can be reduced from 9.7 mm to less than 9.5 mm, depending on the punching, bending and deep-drawing requirements, from the 9.7 mm known from the H4 lamp.
  • the distance B decreases from the 11.9 mm known from the H4 lamp to less than 11.9 mm to 5.9 mm.
  • the dimming cap 62 can be realized with a substantially smaller longitudinal dimension, so that a significant cost reduction due to the reduction of the amount of cap material used, for example molybdenum in the dimming cap with helix according to the present invention is recorded.
  • the total resistance of the system is reduced, resulting in lower conduction losses. Furthermore, due to the reduced dimensions, a lower heat capacity is recorded, resulting in a faster starting of the lamp. The reduced dimensions also cause a higher vibration resistance.
  • Fig. 4 shows a dimming cap 82 with coil 26 according to the second embodiment.
  • the anti-dazzle device 82 differs in the welding tread 84 from the anti-dazzle device of the first embodiment.
  • the welding lug 84 has a transverse rib 86, but in contrast to the transverse rib 70 of the first embodiment, which has the shape of a hollow cylinder halved on the longitudinal axis, has the shape of a hollow cylinder quartered along the longitudinal axis.
  • the weld 88 is formed by projection welding.
  • a smaller dimension B results from the end face 90 of the welding lug 84 for the outlet of the socket-side helical departure 32 from the helix 26, wherein the dimension B is equal to the dimension A, since the weld 88 is located on the end face 50.
  • Fig. 5 shows a screening cap 92 according to the third embodiment, wherein the welding flag 94 has a flat surface 96.
  • the helical outlet 30 rests on the surface 94 and is welded thereto.
  • the weld 98 is disposed on the end face 100, so that also in the third embodiment, the dimensions A and B are the same.
  • a dimming cap optimized for cost and quality can be obtained for an incandescent filament, by means of which a reduced longitudinal dimension of the lamp bulb 24 can be converted even with the same spacing of the filament as in the prior art.
  • a dipped cap with a helix for a two-filament lamp is described.
  • the dimension between an exit of a socket-side helical departure from the helix and the point at opposite to the socket-side helix exit arranged with the Abblendkappe welded helical departure between about 5.2 mm and smaller than 9.7 mm and the dimension between the exit the socket-side helical departure from the helix and the end face of the anti-dazzle device, which is adjacent to the helical departure, at which the helical outlet is welded to the anti-dazzle device, between about 5.9 mm and smaller than 11.9 mm.

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  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Description

Technisches GebietTechnical area

Die Erfindung geht von einer Abblendkappe mit Wendel für Zweiwendellampen aus, die insbesondere bei Fahrzeugscheinwerfern zum Einsatz gelangen.The invention is based on a dimming cap with helix for two-filament lamps, which are used in particular in vehicle headlights.

Stand der TechnikState of the art

Aus der Veröffentlichung WO 98/38670 ist eine Zwei-Faden-Halogenglühlampe bekannt, die einen einseitig dicht gequetschten Lampenkolben hat, dessen Quetschdichtung in einem Halterteil aus Edelstahl klemmend fixiert ist. Innerhalb des Lampenkolbens befinden sich zwei Glühwendeln, die insgesamt über drei eingeschmolzene Stromzuführungen oder über Molybdänfolien und damit verbundene Stromzuführungen mit einem Lampensockel verbindbar sind.From the publication WO 98/38670 is a two-filament halogen incandescent lamp is known, which has a one side densely squeezed lamp bulb, the pinch seal is clamped in a holder part made of stainless steel. Within the lamp envelope are two filaments, which are connected via a total of three melted power supplies or molybdenum foils and associated power supply to a lamp base.

Eine weitere Fahrzeugscheinwerferlampe mit zwei Glühwendel ist aus dem Dokument DE 10 2004 053 644 bekannt.Another vehicle headlamp with two filament is from the document DE 10 2004 053 644 known.

Die in Fig. 1 gezeigte, benachbart zur Lampenkappe vorgesehene Glühwendel 1 dieser Halogenglühlampe ist mit einer Abblendkappe 2 versehen, die eine mit einer Querrippe 4 versehene Schweißfahne 6 aufweist. Von der Glühwendel 1 erstreckt sich ein Wendelabgang 8 zur Schweißstelle 10, an der der Wendelabgang 8 mit der Querrippe 4 mittels Buckelschweißen verschweißbar ist.In the Fig. 1 shown, adjacent to the lamp cap provided incandescent 1 of this halogen incandescent lamp is provided with a Abblendkappe 2, which has a provided with a transverse rib 4 welding lug 6. From the filament 1, a spiral outlet 8 extends to the weld 10, at which the filament outlet 8 with the transverse rib 4 is welded by projection welding.

Der Abstand zwischen einem Austritt eines in Fig. 1 nicht gezeigten sockelseitigen Wendelabgangs aus der Wendel 2 und der Schweißstelle 10 hat die Abmessung A von 9,7 mm, während der Abstand zwischen dem Austritt des sockelseitigen Wendelabgangs aus der Wendel 1 und der Stirnfläche der Schweißfahne 6 die Abmessung B von 11,9 mm hat.The distance between an exit of an in Fig. 1 not shown socket-side Wendelabgangs from the coil 2 and the weld 10 has the dimension A of 9.7 mm, while the distance between the outlet of the socket-side helical departure from the coil 1 and the end face of the welding flag 6 has the dimension B of 11.9 mm ,

Die in Fig. 1 gezeigte Abblendkappe, die insbesondere bei H4-Lampen zum Einsatz gelangt, ist für die Hell-Dunkel-Grenze verantwortlich. Die Abblendkappe 2 ist aus Molybdänblech hergestellt.In the Fig. 1 The anti-dazzle device shown, which is used in particular for H4 lamps, is responsible for the cut-off line. The dimming cap 2 is made of molybdenum sheet.

Darstellung der ErfindungPresentation of the invention

Die Aufgabe der vorliegenden Erfindung ist es, eine Abblendkappe mit Wendel für eine Zweiwendellampe vorzusehen, bei der eine Kostenverringerung, eine exakte Bestimmung der Wendellage und geringe Leitungsverluste erzielbar sind.The object of the present invention is to provide a Abblendkappe with helix for a two-head lamp, in which a cost reduction, an accurate determination of the helical position and low line losses can be achieved.

Diese Aufgabe wird durch eine Abblendkappe mit Wendel nach Anspruch 1 gelöst.This object is achieved by a dimming cap with coil according to claim 1.

Besonders vorteilhafte Ausgestaltungen finden sich in den abhängigen Ansprüchen.Particularly advantageous embodiments can be found in the dependent claims.

Es wird eine Abblendkappe mit Wendel für eine Zweiwendellampe vorgesehen, wobei die Abmessung zwischen einem Austritt eines sockelseitigen Wendelabgangs aus der Wendel und dem Punkt am entgegengesetzt zu dem sockelseitigen Wendelabgang angeordneten, mit der Abblendkappe verschweißten Wendelabgang zwischen ungefähr 5,2 mm und kleiner als 9,7 mm beträgt und wobei die Abmessung zwischen dem Austritt des sockelseitigen Wendelabgang aus der Wendel und der Stirnfläche der Abblendkappe, die benachbart zu dem Wendelabgang liegt, an dem der Wendelabgang mit der Abblendkappe verschweißt ist, zwischen ungefähr 5,9 mm und kleiner als 11,9 mm beträgt. Damit kann eine in Bezug auf Kosten und die Qualität optimierte Abblendkappe umgesetzt werden, insbesondere wenn die Abblendkappen nicht für die Hell-Dunkel-Grenze bei Fahrzeugscheinwerfern verantwortlich sind.A dipped cap with helix is provided for a two-filament lamp, wherein the dimension between an exit of a socket-side helix exit from the helix and the point at opposite to the socket-side helix exit arranged with the Abblendkappe welded helical departure between about 5.2 mm and smaller than 9, 7 mm, and wherein the dimension between the outlet of the socket-side helical departure from the helix and the end face of the anti-dazzle device, which is adjacent to the helical departure, at which the helical departure is welded to the anti-dazzle device, is between approximately 5.9 mm and smaller than 11, 9 mm. This can be implemented in terms of cost and quality optimized dimming, especially when the Abblendkappen are not responsible for the cut-off for vehicle headlamps.

Es wird bevorzugt, dass die Abblendkappe mit dem Wendelabgang durch Buckelschweißen verbunden ist. Dadurch lässt sich eine sichere Verbindung zwischen den zu verschweißenden Teilen ohne einen Zusatzwerkstoff und somit ohne das Einbringen von zusätzlichem Material umsetzen.It is preferred that the anti-dazzle device be connected to the helical exit by projection welding. This allows a secure connection between the parts to be welded without a filler material and thus implement without the introduction of additional material.

Es wird bevorzugt, wenn der Schweißbuckel an der Abblendkappe für das Buckelschweißen im Querschnitt die Form eines Ringabschnitts, vorzugsweise mit einem Winkel von 90°, aufweist. Somit ist die Schweißfahne der Abblendkappe durch das Einbringen einer Querrippe in einfacher Weise umformbar und kann ein Anbringen von Wendelabgängen in beliebiger Relativlage zur Querrippe umgesetzt werden.It is preferred if the weld boss on the projection for the projection welding in cross section has the shape of a ring portion, preferably at an angle of 90 °. Thus, the welding lug of the anti-dazzle device can be deformed in a simple manner by the introduction of a transverse rib, and an attachment of helical outlets in any relative position to the transverse rib can be implemented.

In einer bevorzugten Ausführung ist eine ebene Fläche der Abblendkappe mit dem Wendelabgang verbunden. Auf diese Weise kann sich der Wendelabgang parallel zur Längsachse der Wendel erstrecken und kann ein gleichmäßiger Abstand der Wendel vom Boden der Abblendkappe umgesetzt werden.In a preferred embodiment, a flat surface of the anti-dazzle device is connected to the helical outlet. In this way, the helical departure can extend parallel to the longitudinal axis of the helix and a uniform spacing of the helix from the bottom of the anti-dazzle device can be implemented.

In einer erfindungsgemäßen Weiterbildung ist die Abblendkappe mit Wendel für eine Halogenglühlampe für einen Fahrzeugscheinwerfer ausgebildet, so dass beispielsweise der Einsatz bei Tagfahrlichtleuchten möglich ist.In a development of the invention, the anti-dazzle device with a coil for a halogen incandescent lamp is designed for a vehicle headlight, so that, for example, the use in daytime running lights is possible.

Ferner wird bevorzugt, wenn die Zweiwendellampe eine Zweiwendelscheinwerferlampe ist, da auf diese Weise Abblendlicht und Fernlicht oder Fernlicht und Tagfahrlicht in einer Lampe realisierbar sind.It is further preferred if the two-filament lamp is a two-filament headlamp, as in this way low beam and high beam or high beam and daytime running lights can be realized in a lamp.

Es wird ferner bevorzugt, wenn die Zweiwendellampe eine Zweiwendelhalogenlampe ist, da auf diese Weise eine besondere Lichtstärke bei hervorragender Lichtqualität umsetzbar ist.It is further preferred if the two-filament lamp is a two-filament halogen lamp, since in this way a special light intensity with excellent quality of light can be implemented.

In einer Weiterbildung wird ein Scheinwerfer mit Lampe vorgesehen, die eine Abblendkappe mit Wendel aufweist, wobei eine Blende für die Hell-Dunkel-Grenze außerhalb des Lampengefäßes der Zweiwendellampe und in dem durch den Reflektor begrenzten Raum verantwortlich ist. Damit wird dem Umstand Rechnung getragen, dass die bevorzugten Abmaße an der Baugruppe aus Abblendkappe und Wendel bei Lampen dann besonders gut umsetzbar sind, wenn die Hell-Dunkel-Grenze durch eine mechanisch betätigte Blende im Innenraum des Fahrzeugsscheinwerfers realisiert wird. Im Ergebnis können das Tagfahrlicht und das Fernlicht durch die zwei Wendel der Lampe erzeugt werden, während das Abblendlicht über die Blende erzeugt wird.In a further development, a headlamp is provided with a lamp which has a Abblendkappe with helix, with an aperture for the light-dark boundary outside the lamp vessel of the two-filament lamp and in the limited space by the reflector is responsible. This takes into account the fact that the preferred dimensions of the assembly of dimming cap and coil in lamps are particularly well implemented when the cut-off line is realized by a mechanically operated aperture in the interior of the vehicle headlight. As a result, the daytime running light and the high beam can be generated by the two filaments of the lamp while producing the low beam through the aperture.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Im Folgenden soll die Erfindung anhand von drei Ausführungsbeispielen näher erläutert werden. Die Figuren zeigen:

Fig. 1
eine Abblendkappe mit Wendel nach dem Stand der Technik,
Fig. 2
eine mit Lampensockel versehene Halogenglühlampe für einen Fahrzeugscheinwerfer, bei dem die vorliegende Erfindung einsetzbar ist,
Fig. 3
eine Abblendkappe mit Wendel entsprechend dem ersten Ausführungsbeispiel,
Fig. 4
eine Abblendkappe mit Wendel entsprechend dem zweiten Ausführungsbeispiel, und
Fig. 5
eine Abblendkappe mit Wendel entsprechend dem dritten Ausführungsbeispiel.
In the following, the invention will be explained in more detail with reference to three exemplary embodiments. The figures show:
Fig. 1
a prior art anti-dazzle device with a helix,
Fig. 2
a lamp-provided halogen incandescent lamp for a vehicle headlight, in which the present invention can be used,
Fig. 3
a dimming cap with helix according to the first embodiment,
Fig. 4
a dimming cap with a helix according to the second embodiment, and
Fig. 5
a dimming cap with a helix according to the third embodiment.

Bevorzugte Ausführung der ErfindungPreferred embodiment of the invention

Fig. 2 zeigt eine mit einem Lampensockel 20 versehene Halogenglühlampe 22 für einen Fahrzeugscheinwerfer. Fig. 2 shows a provided with a lamp base 20 halogen bulb 22 for a vehicle headlight.

Die Halogenglühlampe 22 weist ein gläsernes, im Wesentlichen zylindrisches Lampengefäß 24 auf, in dessen Innenraum zwei parallel zur Lampengefäßachse ausgerichtete Glühwendeln 26, 28 angeordnet sind, die beispielsweise zur Erzeugung eines Fernlichts und eines Tagfahrlichts oder eines Fernlichts und eines Abblendlichts dienen. Die Glühwendeln 26, 28 sind beispielsweise als einfach oder doppelt gewendete Wolframdrähte ausgebildet.The halogen incandescent lamp 22 has a glassy, substantially cylindrical lamp vessel 24, in the interior of which two filaments 26, 28 aligned parallel to the lamp vessel axis are arranged, which serve, for example, to produce a high beam and a daytime running light or a high beam and a low beam. The filaments 26, 28 are formed, for example, as single or double turned tungsten wires.

Die Wendelabgänge 30, 32 der Wendel 26 und die Wendelabgänge 34, 36 der Wendel 28 sind bevorzugt mit einer Molybdänfolie umwickelt, die als eine Schweißhilfe beim Verschweißen der Wendelabgänge mit den Stromzuführungen für die Glühwendel dient. Ein abgedichtetes Ende 38 des Lampengefäßes 24 ist in dem Lampensockel 20 verankert. Die vom Lampensockel 20 abgewandte Lampengefäßkuppe 40 kann mit einer lichtundurchlässigen Beschichtung 40 versehen sein. Die Glühwendel 26, die benachbart zur Lampengefäßkuppe 40 vorgesehen ist, ist benachbart zu einer aus Molybdänblech geformten Abblendkappe 42 angeordnet.The helical outlets 30, 32 of the helix 26 and the helical outlets 34, 36 of the helix 28 are preferably wrapped with a molybdenum foil, which serves as a welding aid in welding the helical outlets to the power supply lines for the incandescent filament. A sealed end 38 of the lamp vessel 24 is anchored in the lamp base 20. The lamp vessel cap 40 facing away from the lamp cap 20 may be provided with an opaque coating 40. The incandescent filament 26, which is provided adjacent to the lamp vessel tip 40, is disposed adjacent to a shield plate 42 formed of molybdenum sheet metal.

Die Abblendkappe 42 und die Glühwendel 62 sind in den Darstellungen der Fig. 3, 4 und 5 vergrößert hervorgehoben.The dimming cap 42 and the filament 62 are in the illustrations of Fig. 3, 4 and 5 magnified highlighted.

Der zur lichtundurchlässigen Beschichtung 40 weisende Wendelabgang 30 der Glühwendel 26 ist mit der Abblendkappe 42 in einem Randbereich von dieser verschweißt, während der Boden der wannenartigen Abblendkappe 42 mit einer Stromzuführung 44 verschweißt ist. Der Wendelabgang 32 der Glühwendel 26 und der Wendelabgang 34 der Glühwendel 28 sind mit einer Stromzuführung 46 verschweißt, während der Wendelabgang 36 der Glühwendel 28 mit einer Stromzuführung 48 verschweißt ist.The filament outlet 30 of the incandescent filament 26 facing the opaque coating 40 is welded to the antiglare cap 42 in an edge region thereof, while the bottom of the trough-type antiglare cap 42 is welded to a current supply 44. The filament outlet 32 of the filament 26 and the filament outlet 34 of the filament 28 are welded to a power supply 46, while the filament outlet 36 of the filament 28 is welded to a power supply 48.

Die drei Stromzuführungsdrähte 44, 46, 48 sind über zwei miteinander verschmolzene Quarzglasstege 50 fixiert, so dass die Stromzuführung 44, 46, 48 in einer Ebene angeordnet sind. Bei der Verwendung von Hartglas verlaufen die Stromzuführungen 44, 46, 48 durch das abgedichtete Ende 38 des Lampengefäßes 24 und sind mit Kontaktfahne 52, 54, 56 am Lampensockel 20 in elektrischer Verbindung. In Quarzglas sind Molybdänfolien in der Quetschung vorgesehen. Die drei Kontaktfahnen 52, 54, 56 ragen in Bezug auf die Mittelachse des Lampengefäßes 24 aus dem Lampensockel 20 seitlich heraus und bilden die elektrischen Anschlüsse der Halogenlampe.The three power supply wires 44, 46, 48 are fixed via two fused quartz glass webs 50, so that the power supply 44, 46, 48 are arranged in a plane. When using hard glass, the power supply lines 44, 46, 48 extend through the sealed end 38 of the lamp vessel 24 and are in electrical connection with the contact lug 52, 54, 56 on the lamp base 20. In quartz glass molybdenum foils are provided in the pinch. The three contact lugs 52, 54, 56 protrude laterally with respect to the central axis of the lamp vessel 24 from the lamp base 20 and form the electrical connections of the halogen lamp.

Nachfolgend wird die Gestaltung der Abblendkappe mit Wendeln, beispielsweise für eine vorstehend beschriebene Zweiwendellampe, in Bezug auf das erste Ausführungsbeispiel in Fig. 3 beschrieben. Fig. 3 zeigt die Abblendkappe 62, die mit dem Bezugszeichen 42 in Fig. 2 lediglich schematisch angedeutet ist, in der Seitenansicht.Hereinafter, the design of the anti-dazzle device with coils, for example, for a two-head lamp described above, with respect to the first embodiment in Fig. 3 described. Fig. 3 shows the Abblendkappe 62, denoted by the reference numeral 42 in Fig. 2 only indicated schematically, in side view.

Die Abblendkappe 62 weist einen wannenartigen Abschnitt 64 auf, der beispielsweise durch zumindest eine in den Fig. nicht dargestellte Rippe stabilisiert werden kann. Die Schweißfahne 6 ist über eine Anschlussschräge 66 des wannenartigen Abschnitts 64 mit dem wannenartigen Abschnitt 64 verbunden und hat eine Querrippe 70, über die der Wendelabgang 30 der Glühwendel 26 mit der Abblendkappe 62 verschweißbar ist. In Fig. 3 ist der Wendelabgang 32 nicht dargestellt, sondern lediglich der Ort des Austritts des sockelseitigen Wendelabgangs 32 aus der Wendel 26.The anti-dazzle device 62 has a trough-like section 64 which can be stabilized, for example, by at least one rib, not shown in the figures. The welding lug 6 is connected via a connecting bevel 66 of the trough-like portion 64 with the trough-like portion 64 and has a transverse rib 70, over which the helical outlet 30 of the incandescent filament 26 with the Abblendkappe 62 is welded. In Fig. 3 the spiral outlet 32 is not shown, but only the location of the exit of the socket-side helical outlet 32 from the coil 26th

Der Abstand der Schweißstelle 72 des Wendelabgangs 30 mit der Querrippe 70 von diesem Austritt des sockelseitigen Wendelabgangs 32 aus der Wendel 26 ist mit A bezeichnet, während der Abstand der Stirnfläche 74 der Schweißfahne 68 von dem Austritt des sockelseitigen Wendelabgangs 32 aus der Wendel 26 mit B bezeichnet ist. Das Maß für den Abstand des Austritts des sockelseitigen Wendelabgangs aus der Wendel in Bezug auf den Sockel wird entsprechend ECE R37 als e-Maß bezeichnet. Das Abstandsmaß A kann in Abhängigkeit von den stanz-, biege-, und tiefziehtechnischen Anforderungen von den von der H4-Lampe bekannten 9,7 mm auf unter 9,7 mm bis zu 5,2 mm verringert werden. Durch Verkürzung des Endabschnitts der Schweißfahne 68 verringert sich das Abstandsmaß B von den von der H4-Lampe bekannten 11,9 mm auf unter 11,9 mm bis zu 5,9 mm.The distance of the welding point 72 of the helical departure 30 with the transverse rib 70 from this outlet of the base-side helical departure 32 from the helix 26 is designated A, while the distance between the end face 74 of the welding tail 68 from the exit of the socket-side helical departure 32 from the helix 26 with B. is designated. The measure of the distance of the outlet of the socket-side helical departure from the helix with respect to the base is referred to as e-dimension according to ECE R37. The distance measure A can be reduced from 9.7 mm to less than 9.5 mm, depending on the punching, bending and deep-drawing requirements, from the 9.7 mm known from the H4 lamp. By shortening the end portion of the welding lug 68, the distance B decreases from the 11.9 mm known from the H4 lamp to less than 11.9 mm to 5.9 mm.

Im Ergebnis kann die Abblendkappe 62 mit wesentlich geringerer Längsabmessung realisiert werden, so dass auf Grund der Verringerung der Menge des verwendeten Kappenwerkstoffs, beispielsweise Molybdän, eine deutliche Kostenverringerung bei der Abblendkappe mit Wendel entsprechend der vorliegenden Erfindung zu verzeichnen ist.As a result, the dimming cap 62 can be realized with a substantially smaller longitudinal dimension, so that a significant cost reduction due to the reduction of the amount of cap material used, for example molybdenum in the dimming cap with helix according to the present invention is recorded.

Da der mitleuchtende Wendelabgang 30 verkürzt werden kann, liegt weniger parasitäres Licht vor und können geringere Biegemomente beim Schweißen auftreten, so dass die Lage der Glühwendel 26 exakter vorher bestimmbar ist.Since the glowing Wendelabgang 30 can be shortened, there is less parasitic light and lower bending moments occur during welding, so that the position of the filament 26 can be determined exactly before.

Auf Grund des kürzeren Wendelabgangs 30 und der verringerten Abmessungen der Abblendkappe 62 verringert sich der Gesamtwiderstand des Systems und es ergeben sich dadurch geringere Leitungsverluste. Ferner ist auf Grund der verringerten Abmessungen eine geringere Wärmekapazität zu verzeichnen, so dass sich ein schnelleres Anlaufen der Lampe ergibt. Die verringerten Abmessungen bewirken darüber hinaus eine höhere Vibrationsfestigkeit.Due to the shorter spiral outlet 30 and the reduced dimensions of the dimming cap 62, the total resistance of the system is reduced, resulting in lower conduction losses. Furthermore, due to the reduced dimensions, a lower heat capacity is recorded, resulting in a faster starting of the lamp. The reduced dimensions also cause a higher vibration resistance.

Fig. 4 zeigt eine Abblendkappe 82 mit Wendel 26 entsprechend dem zweiten Ausführungsbeispiel. Fig. 4 shows a dimming cap 82 with coil 26 according to the second embodiment.

Die Abblendkappe 82 unterscheidet sich in der Schweißfahne 84 von der Abblendkappe des ersten Ausführungsbeispiels. Die Schweißfahne 84 weist eine Querrippe 86 auf, hat jedoch im Unterschied zur Querrippe 70 des ersten Ausführungsbeispiels, die die Form eines an der Längsachse halbierten Hohlzylinders aufweist, im Querschnitt die Form eines an der Längsachse geviertelten Hohlzylinders. Wie auch beim ersten Ausführungsbeispiel ist die Schweißstelle 88 über Buckelschweißen ausgebildet.The anti-dazzle device 82 differs in the welding tread 84 from the anti-dazzle device of the first embodiment. The welding lug 84 has a transverse rib 86, but in contrast to the transverse rib 70 of the first embodiment, which has the shape of a hollow cylinder halved on the longitudinal axis, has the shape of a hollow cylinder quartered along the longitudinal axis. As in the first embodiment, the weld 88 is formed by projection welding.

Da auf einen Teil der Längsabmessung der Schweißfahne aus dem ersten Ausführungsbeispiel beim zweiten Ausführungsbeispiel verzichtet werden kann, ergibt sich eine geringere Abmessung B von der Stirnfläche 90 der Schweißfahne 84 zum Austritt des sockelseitigen Wendelabgangs 32 aus der Wendel 26, wobei die Abmessung B gleich der Abmessung A ist, da sich die Schweißstelle 88 an der Stirnfläche 50 befindet. Fig. 5 zeigt eine Abblendkappe 92 entsprechend dem dritten Ausführungsbeispiel, wobei die Schweißfahne 94 eine ebene Oberfläche 96 hat. Somit liegt der Wendelabgang 30 auf der Fläche 94 auf und ist mit dieser verschweißt. Hierbei wird in gleicher Weise wie beim zweiten Ausführungsbeispiel nach Fig. 4 bevorzugt, dass die Schweißstelle 98 an der Stirnfläche 100 angeordnet ist, so dass auch beim dritten Ausführungsbeispiel die Abmessungen A und B gleich sind.Since it is possible to dispense with a part of the longitudinal dimension of the welding lug from the first exemplary embodiment in the second exemplary embodiment, a smaller dimension B results from the end face 90 of the welding lug 84 for the outlet of the socket-side helical departure 32 from the helix 26, wherein the dimension B is equal to the dimension A, since the weld 88 is located on the end face 50. Fig. 5 shows a screening cap 92 according to the third embodiment, wherein the welding flag 94 has a flat surface 96. Thus, the helical outlet 30 rests on the surface 94 and is welded thereto. Here, in the same manner as in the second embodiment after Fig. 4 preferred that the weld 98 is disposed on the end face 100, so that also in the third embodiment, the dimensions A and B are the same.

Mit der vorliegenden Erfindung entsprechend einem der drei Ausführungsbeispiele kann eine auf Kosten und Qualität optimierte Abblendkappe für eine Glühwendel erhalten werden, durch die auch bei gleichem Abstand der Wendel wie beim Stand der Technik eine verringerte Längsabmessung des Lampenkolbens 24 umsetzbar ist.With the present invention according to one of the three exemplary embodiments, a dimming cap optimized for cost and quality can be obtained for an incandescent filament, by means of which a reduced longitudinal dimension of the lamp bulb 24 can be converted even with the same spacing of the filament as in the prior art.

Es wird eine Abblendkappe mit Wendel für eine Zweiwendellampe beschrieben. Bei dieser sind die Abmessung zwischen einem Austritt eines sockelseitigen Wendelabgangs aus der Wendel und dem Punkt am entgegengesetzt zu dem sockelseitigen Wendelabgang angeordneten, mit der Abblendkappe verschweißten Wendelabgang, zwischen ungefähr 5,2 mm und kleiner als 9,7 mm und die Abmessung zwischen dem Austritt des sockelseitigen Wendelabgangs aus der Wendel und der Stirnfläche der Abblendkappe, die benachbart zu dem Wendelabgang liegt, an dem der Wendelabgang mit der Abblendkappe verschweißt ist, zwischen ungefähr 5,9 mm und kleiner als 11,9 mm.A dipped cap with a helix for a two-filament lamp is described. In this case, the dimension between an exit of a socket-side helical departure from the helix and the point at opposite to the socket-side helix exit arranged with the Abblendkappe welded helical departure, between about 5.2 mm and smaller than 9.7 mm and the dimension between the exit the socket-side helical departure from the helix and the end face of the anti-dazzle device, which is adjacent to the helical departure, at which the helical outlet is welded to the anti-dazzle device, between about 5.9 mm and smaller than 11.9 mm.

Claims (8)

  1. Anti-dazzle device (42) with a filament (26) for a two-filament lamp, the dimension between a point at which a base-side outgoing filament end (32) emerges from the filament (26) and the point on the outgoing filament end (30) which is arranged opposite the base-side outgoing filament end (30) and is welded to the anti-dazzle device (42) being between approximately 5.2 mm and less than 9.7 mm, and the dimension between the point at which the base-side outgoing filament end (32) emerges from the filament (26) and the end face (74) of the anti-dazzle device (42), which is adjacent to the outgoing filament end (30), at which the outgoing filament end is welded to the anti-dazzle device, being between approximately 5.9 mm and less than 11.9 mm.
  2. Anti-dazzle device with a filament according to Claim 1, wherein the anti-dazzle device (42) is connected to the outgoing filament end (30) by means of projection welding.
  3. Anti-dazzle device with a filament according to Claim 2, wherein the transverse rib (70) for the welding projection on the anti-dazzle device (42) for the projection welding has, in cross section, the form of a ring segment, preferably with an angle of 90°.
  4. Anti-dazzle device with a filament according to Claim 1, wherein a planar face (96) of the anti-dazzle device is connected to the outgoing filament end (30).
  5. Anti-dazzle device with a filament according to one of the preceding claims, wherein the two-filament lamp is a two-filament vehicle headlamp.
  6. Anti-dazzle device with a filament according to one of the preceding claims, wherein the two-filament lamp is a two-filament halogen lamp.
  7. Lamp with an anti-dazzle device with a filament according to one or more of Claims 1 to 6.
  8. Headlamp with a lamp which has an anti-dazzle device with a filament according to one of the preceding claims, in which a shield for the light/dark boundary is arranged outside of the lamp vessel (24) of the two-filament lamp and in the space delimited by the reflector.
EP07847862.5A 2006-12-19 2007-12-05 Dipping cap comprising a filament Not-in-force EP2106615B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006060029A DE102006060029A1 (en) 2006-12-19 2006-12-19 Dimming cap with helix
PCT/EP2007/063374 WO2008074640A2 (en) 2006-12-19 2007-12-05 Dipping cap comprising a filament

Publications (2)

Publication Number Publication Date
EP2106615A2 EP2106615A2 (en) 2009-10-07
EP2106615B1 true EP2106615B1 (en) 2016-09-28

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EP07847862.5A Not-in-force EP2106615B1 (en) 2006-12-19 2007-12-05 Dipping cap comprising a filament

Country Status (6)

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US (1) US8164240B2 (en)
EP (1) EP2106615B1 (en)
JP (1) JP5074517B2 (en)
CN (1) CN101536146B (en)
DE (1) DE102006060029A1 (en)
WO (1) WO2008074640A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102610484A (en) * 2012-02-24 2012-07-25 太仓康茂电子有限公司 High-efficiency anti-glare vehicle light
EP2994932B1 (en) 2013-05-07 2016-09-14 Koninklijke Philips N.V. Automotive front lighting lamp with baffle

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1901179A1 (en) * 1969-01-10 1970-08-06 Patra Patent Treuhand Two-filament halogen light bulb for motor vehicle headlights
JPS59154760U (en) * 1983-03-31 1984-10-17 松下電子工業株式会社 incandescent light bulb for vehicle
DE3525041C2 (en) * 1985-07-13 1994-06-16 Bosch Gmbh Robert Low beam or fog lights for motor vehicles
JP3681471B2 (en) * 1996-06-04 2005-08-10 本田技研工業株式会社 Automotive bulb
EP0812004B1 (en) * 1996-06-04 2003-07-09 Honda Giken Kogyo Kabushiki Kaisha Automobile lamp bulb
DE19624688A1 (en) * 1996-06-20 1998-01-02 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Shading device for a motor vehicle headlight lamp and manufacturing method for such a shading device
DE19707245A1 (en) * 1997-02-25 1998-08-27 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Method of making an electric light bulb
DE102004053644A1 (en) * 2004-11-03 2006-05-04 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Vehicle headlamp

Also Published As

Publication number Publication date
US8164240B2 (en) 2012-04-24
WO2008074640A3 (en) 2009-03-26
CN101536146A (en) 2009-09-16
DE102006060029A1 (en) 2008-06-26
WO2008074640A2 (en) 2008-06-26
EP2106615A2 (en) 2009-10-07
CN101536146B (en) 2011-11-30
JP5074517B2 (en) 2012-11-14
JP2010514115A (en) 2010-04-30
US20100090578A1 (en) 2010-04-15

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