EP2342736B1 - Halogen bulb for vehicle headlights and vehicle headlight - Google Patents

Halogen bulb for vehicle headlights and vehicle headlight Download PDF

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Publication number
EP2342736B1
EP2342736B1 EP09747812A EP09747812A EP2342736B1 EP 2342736 B1 EP2342736 B1 EP 2342736B1 EP 09747812 A EP09747812 A EP 09747812A EP 09747812 A EP09747812 A EP 09747812A EP 2342736 B1 EP2342736 B1 EP 2342736B1
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EP
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Prior art keywords
filament
halogen bulb
millimetres
range
coil body
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EP09747812A
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German (de)
French (fr)
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EP2342736A1 (en
Inventor
Peter Helbig
Oliver Hering
Harald Kaps
Klaus Wittmann
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Osram GmbH
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Osram GmbH
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/02—Incandescent bodies
    • H01K1/14—Incandescent bodies characterised by the shape

Definitions

  • the invention relates to a halogen incandescent lamp for vehicle headlights according to the preamble of claim 1 and vehicle headlights with such a halogen incandescent lamp.
  • Such a halogen incandescent lamp is for example in the WO 2007/042464 A1 disclosed.
  • This document describes a halogen incandescent lamp for vehicle headlights with an arranged inside a translucent lamp vessel incandescent.
  • the filament is dimensioned such that the halogen incandescent lamp has an electrical power consumption of about 55 watts during its operation on the vehicle electrical system voltage of the vehicle and generates a luminous flux of about 1715 lumens.
  • Halogen incandescent lamps of the H21W type have a maximum power consumption of 13.5 V in accordance with ECE standard 37 when operated with a vehicle electrical system voltage of 13.5 volts. 26.25 watts and generate a luminous flux of 600 lm ⁇ 12%.
  • the halogen incandescent lamp according to the invention for vehicle headlamps has one within a translucent Lamp vessel arranged, coiled filament, which is dimensioned such that the halogen incandescent lamp has an electrical power consumption in the range of 16 watts to 22 watts and generates a luminous flux in the range of 400 lumens to 600 lumens.
  • the halogen incandescent lamp according to the invention can be used in vehicle headlights for different functions.
  • the halogen incandescent lamp according to the invention can be used for a static or dynamic cornering light or cornering light or operated, for example, in a dimmed state in a headlight, which is used to generate the daytime running light or position light.
  • halogen incandescent lamps according to the invention can be used in a vehicle headlight for generating the high beam or or and the low beam.
  • the halogen incandescent lamp according to the invention can also be used as a light source in a reversing spotlight.
  • the halogen incandescent lamp according to the invention thus forms a versatile light source for vehicle headlights due to the inventive dimensioning of their filament.
  • the filament of the halogen incandescent lamp according to the invention has a helical body designed as a single wound, which satisfies the following condition: 0 . 10 ⁇ L ⁇ D W ⁇ 0 . 16 where D is the numerical value of the outer diameter of the helical body measured in millimeters, L is the numerical value of the helical body length measured along the winding axis in millimeters and W is the number of turns of the helical body, and wherein the number of turns W is in the range of 17 to 23 and preferably in the range from 18 to 22 is located.
  • the halogen incandescent lamp during its operation on the electrical system voltage of a motor vehicle, which is nominally nominal 13.2 volts, has an electrical power consumption in the range of 16 watts to 22 watts and a luminous flux in the range of 400 lumens Generated 600 lumens.
  • the measured along its winding axis length of the filament of the filament of the halogen incandescent lamp according to the invention in the range of 2.1 millimeters to 3.6 millimeters and the outer diameter of the filament of the filament of the halogen incandescent lamp according to the invention is preferably in the range of 0.6 millimeters to 1.1 Millimeter, to come as close as possible to the ideal of a point light source for projection in the headlight.
  • the wire thickness of the filament of the filament of the halogen incandescent lamp according to the invention is in the range of 85 microns to 90 microns. This allows the ohmic resistance of the coil to be adapted to the operating voltage and the desired electrical power consumption of the halogen incandescent lamp.
  • a filling gas is advantageously provided in the interior of the lamp vessel of the halogen incandescent lamp according to the invention, in addition to a halogen filling a noble gas or a noble gas mixture from the group of xenon Contains krypton and argon.
  • the cold filling pressure of the halogen incandescent lamp according to the invention is preferably in the range from 0.7 megapascals to 1.5 megapascals.
  • the halogen incandescent lamp according to the invention preferably has a lamp vessel which has a circular cylindrical section surrounding the filament with an outer diameter in the range of 9 millimeters to 15 millimeters and preferably in the range of 10.5 millimeters to 13 millimeters, in order to heat up the lamp vessel sufficiently for the halogen cycle to ensure.
  • the ratio of outer diameter to wall thickness of the cylindrical lamp vessel portion is preferably in the range of 9 to 13 for the same reason.
  • FIG. 1 schematically the construction of a halogen incandescent lamp according to the preferred embodiments of the invention is shown.
  • This halogen bulb is a type H16 halogen bulb.
  • This halogen incandescent lamp has a quartz glass or hard glass, for example alumina-silicate glass, existing lamp vessel 1, which is fixed in the metal base part 21 of a lamp cap 2.
  • the adjoining the metal base part 21 plastic base part 22 of the lamp cap 2 is equipped with electrical connections (not shown) for powering the halogen incandescent lamp.
  • the gas-tightly sealed lamp vessel 1 has a sealed end 11 which is fixed in the metal base part 21, and a circular cylindrical central lamp vessel portion 12 and a lamp vessel tip 13 which is opposite to the sealed end 11 and provided with an opaque coating.
  • the circular cylindrical lamp vessel section 12 has an outer diameter of 11.3 millimeters and its wall thickness is 1.1 millimeters.
  • a filling gas mixture with a cold filling pressure of about 1.2 megapascals which includes halogens and krypton.
  • a filament 3 designed as a tungsten filament 3 is arranged in the region of the circular-cylindrical lamp vessel section 12.
  • the winding axis AA of the helix 3 is aligned parallel to the cylinder axis of the circular-cylindrical lamp vessel section 12.
  • the two ends 31, 32 of the filament 3 are each covered by a molybdenum tube 33, serving as a welding aid 33, 34 and with a Power supply wire 4 or 5 welded from molybdenum.
  • the power supply wires 4, 5 are led out of the sealed end 11 of the lamp vessel 1 and connected to the electrical terminals of the halogen incandescent lamp.
  • the filament 3 is formed as a simple coiled filament. It has a helical body 30 designed as a single wound and two uncoiled ends 31, 32.
  • the uncoiled ends 31, 32 are each surrounded by a molybdenum tube 33, 34 or wrapped with a molybdenum foil, which serves as welding aid in welding the ends 31, 32 of the filament 3 with the power supply wires 4, 5 serve.
  • the measured along its winding axis AA length L of the coil body 30 is 2.86 millimeters.
  • the outer diameter D of the helical body 30 and the windings of the winding body 30 is 0.8 millimeters.
  • the helical body has 20 turns, that is, the number of turns W of the filament 3 is 20.
  • the wire thickness or diameter of the tungsten wire constituting the filament 3 is 87 micrometers.
  • the ratio of the product of length L and outer diameter D to the number of turns W of the helical body 30 is thus calculated to a value of 0.11.
  • the halogen incandescent lamp has an electrical power consumption of 21.3 watts when operated at a nominal vehicle electrical system voltage of 13.2 volts with this filament and generates a luminous flux of 430 lumens.
  • the halogen incandescent lamp according to the second embodiment of the invention differs from the above described first embodiment only by the helical data.
  • the filament according to the second embodiment of the invention is also formed as a simple coiled filament.
  • Her trained as a single wound coil body has a measured along its winding axis length L of 2.90 millimeters and an outer diameter D of 0.85 millimeters and a number of turns W of 20.
  • the wire thickness of the helical wire is in the filament according to the second embodiment of the invention 88 microns.
  • the ratio of the product of length L and outer diameter D to the number of turns W of the filament body of the filament according to the second embodiment of the invention is thus calculated to a value of 0.12.
  • the halogen incandescent lamp according to the second embodiment of the invention has an electrical power consumption of 21.7 watts when operating on a nominal vehicle electrical system voltage of 13.2 volts and generates a luminous flux of 475 lumens.
  • the halogen incandescent lamp according to the third embodiment of the invention differs from the above-described embodiments only by the filament data.
  • the filament according to the third embodiment of the invention is also formed as a simple coiled filament.
  • Their helical body formed as a single wound has a length L measured along its winding axis of 3.29 millimeters and an outer diameter D of 0.8 millimeters and a winding number W of 21.
  • the wire thickness of the helical wire in the filament according to the third embodiment of the invention is 87 microns.
  • the ratio of the product of Length L and outer diameter D to the number of turns W of the filament body of the filament according to the third embodiment of the invention is thus calculated to a value of 0.13.
  • the halogen incandescent lamp according to the third embodiment of the invention has an electrical power consumption of 21.7 watts when operating on a vehicle electrical system voltage of 13.2 volts and generates a luminous flux of 465 lumens.

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  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

Die Erfindung betrifft eine Halogenglühlampe für Fahrzeugscheinwerfer gemäß dem Oberbegriff des Anspruchs 1 und Fahrzeugscheinwerfer mit einer derartigen Halogenglühlampe.The invention relates to a halogen incandescent lamp for vehicle headlights according to the preamble of claim 1 and vehicle headlights with such a halogen incandescent lamp.

I. Stand der Technik I. State of the art

Eine derartige Halogenglühlampe ist beispielsweise in der WO 2007/042464 A1 offenbart. Diese Schrift beschreibt eine Halogenglühlampe für Fahrzeugscheinwerfer mit einer innerhalb eines lichtdurchlässigen Lampengefäßes angeordneten Glühwendel. Die Glühwendel ist derart dimensioniert, dass die Halogenglühlampe während ihres Betriebs an der Bordnetzspannung des Fahrzeugs eine elektrische Leistungsaufnahme von ca. 55 Watt besitzt und einen Lichtstrom von ca. 1715 Lumen generiert.Such a halogen incandescent lamp is for example in the WO 2007/042464 A1 disclosed. This document describes a halogen incandescent lamp for vehicle headlights with an arranged inside a translucent lamp vessel incandescent. The filament is dimensioned such that the halogen incandescent lamp has an electrical power consumption of about 55 watts during its operation on the vehicle electrical system voltage of the vehicle and generates a luminous flux of about 1715 lumens.

Halogenglühlampen des Typs H21W weisen gemäß ECE-Norm Regel 37 bei Betrieb mit einer Bordnetzspannung von 13,5 Volt eine Leistungsaufnahme von max. 26,25 Watt auf und generieren einen Lichtstrom von 600 lm ± 12%.Halogen incandescent lamps of the H21W type have a maximum power consumption of 13.5 V in accordance with ECE standard 37 when operated with a vehicle electrical system voltage of 13.5 volts. 26.25 watts and generate a luminous flux of 600 lm ± 12%.

II. Darstellung der Erfindung II. Presentation of the invention

Es ist Aufgabe der Erfindung, eine energiesparende Halogenglühlampe bereitzustellen, die in Fahrzeugscheinwerfern vielseitig für unterschiedliche Funktionen verwendbar ist.It is an object of the invention to provide an energy-saving halogen incandescent lamp which is versatile in vehicle headlights for different functions.

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

Die erfindungsgemäße Halogenglühlampe für Fahrzeugscheinwerfer weist einen innerhalb eines lichtdurchlässigen Lampengefäßes angeordneten, gewendelten Glühfaden auf, der derart dimensioniert ist, dass die Halogenglühlampe eine elektrische Leistungsaufnahme im Bereich von 16 Watt bis 22 Watt besitzt und einen Lichtstrom im Bereich von 400 Lumen bis 600 Lumen generiert. Dadurch kann die erfindungsgemäße Halogenglühlampe in Fahrzeugscheinwerfern für unterschiedliche Funktionen eingesetzt werden. Beispielsweise kann die erfindungsgemäße Halogenglühlampe für ein statisches oder dynamisches Kurvenlicht bzw. Abbiegelicht verwendet werden oder beispielsweise auch in einem gedimmten Zustand in einem Scheinwerfer betrieben werden, der zum Erzeugen des Tagfahrlichts oder Positionslichts dient. Außerdem können beispielsweise mehrere der erfindungsgemäßen Halogenglühlampen in einem Fahrzeugscheinwerfer zum Erzeugen des Fernlichts oder bzw. und des Abblendlichts eingesetzt werden. Ferner kann die erfindungsgemäße Halogenglühlampe auch als Lichtquelle in einem Rückfahrscheinwerfer eingesetzt werden. Die erfindungsgemäße Halogenglühlampe bildet damit aufgrund der erfindungsgemäßen Dimensionierung ihres Glühfadens eine vielseitig verwendbare Lichtquelle für Fahrzeugscheinwerfer.The halogen incandescent lamp according to the invention for vehicle headlamps has one within a translucent Lamp vessel arranged, coiled filament, which is dimensioned such that the halogen incandescent lamp has an electrical power consumption in the range of 16 watts to 22 watts and generates a luminous flux in the range of 400 lumens to 600 lumens. As a result, the halogen incandescent lamp according to the invention can be used in vehicle headlights for different functions. For example, the halogen incandescent lamp according to the invention can be used for a static or dynamic cornering light or cornering light or operated, for example, in a dimmed state in a headlight, which is used to generate the daytime running light or position light. In addition, for example, several of the halogen incandescent lamps according to the invention can be used in a vehicle headlight for generating the high beam or or and the low beam. Furthermore, the halogen incandescent lamp according to the invention can also be used as a light source in a reversing spotlight. The halogen incandescent lamp according to the invention thus forms a versatile light source for vehicle headlights due to the inventive dimensioning of their filament.

Der Glühfaden der erfindungsgemäßen Halogenglühlampe weist einen als Einfachgewickel ausgebildeten Wendelkörper auf, der folgender Bedingung genügt: 0 , 10 ≤ L ⋅ D W ≤ 0 , 16

Figure imgb0001
wobei D der Zahlenwert des in Millimeter gemessenen Außendurchmessers des Wendelkörpers ist, L der Zahlenwert der entlang der Wickelachse in Millimeter gemessenen Länge des Wendelkörpers ist und W die Windungszahl des Wendelkörpers ist, und wobei die Windungszahl W im Bereich von 17 bis 23 und vorzugsweise im Bereich von 18 bis 22 liegt. Dadurch kann auf einfache Weise gewährleistet werden, dass die Halogenglühlampe während ihres Betriebs an der Bordnetzspannung eines Kraftfahrzeugs, die üblicherweise nominal 13,2 Volt beträgt, eine elektrische Leistungsaufnahme im Bereich von 16 Watt bis 22 Watt besitzt und einen Lichtstrom im Bereich von 400 Lumen bis 600 Lumen generiert.The filament of the halogen incandescent lamp according to the invention has a helical body designed as a single wound, which satisfies the following condition: 0 . 10 ≤ L ⋅ D W ≤ 0 . 16
Figure imgb0001
 where D is the numerical value of the outer diameter of the helical body measured in millimeters, L is the numerical value of the helical body length measured along the winding axis in millimeters and W is the number of turns of the helical body, and wherein the number of turns W is in the range of 17 to 23 and preferably in the range from 18 to 22 is located. This can be ensured in a simple manner that the halogen incandescent lamp during its operation on the electrical system voltage of a motor vehicle, which is nominally nominal 13.2 volts, has an electrical power consumption in the range of 16 watts to 22 watts and a luminous flux in the range of 400 lumens Generated 600 lumens.

Vorzugsweise liegt die entlang seiner Wickelachse gemessene Länge des Wendelkörpers des Glühfadens der erfindungsgemäßen Halogenglühlampe im Bereich von 2,1 Millimeter bis 3,6 Millimeter und der Außendurchmesser des Wendelkörpers des Glühfadens der erfindungsgemäßen Halogenglühlampe liegt vorzugsweise im Bereich von 0,6 Millimeter bis 1,1 Millimeter, um dem Ideal einer punktförmigen Lichtquelle für die Projektion im Scheinwerfer möglichst nahe zu kommen.Preferably, the measured along its winding axis length of the filament of the filament of the halogen incandescent lamp according to the invention in the range of 2.1 millimeters to 3.6 millimeters and the outer diameter of the filament of the filament of the halogen incandescent lamp according to the invention is preferably in the range of 0.6 millimeters to 1.1 Millimeter, to come as close as possible to the ideal of a point light source for projection in the headlight.

Die Drahtstärke des Wendeldrahtes des Glühfadens der erfindungsgemäßen Halogenglühlampe liegt im Bereich von 85 Mikrometer bis 90 Mikrometer. Dadurch kann der ohmsche Widerstand der Wendel an die Betriebsspannung und die gewünschte elektrische Leistungsaufnahme der Halogenglühlampe angepasst werden.The wire thickness of the filament of the filament of the halogen incandescent lamp according to the invention is in the range of 85 microns to 90 microns. This allows the ohmic resistance of the coil to be adapted to the operating voltage and the desired electrical power consumption of the halogen incandescent lamp.

Um die Abdampfrate des Wendelmaterials von der Glühwendel zu reduzieren und eine Schwärzung des Lampengefäßes durch abdampfendes Wendelmaterial zu verhindern, ist im Innenraum des Lampengefäßes der erfindungsgemäßen Halogenglühlampe in vorteilhafter Weise ein Füllgas vorgesehen, das neben einer Halogenfüllung ein Edelgas oder ein Edelgasgemisch aus der Gruppe von Xenon, Krypton und Argon enthält. Der Kaltfülldruck der erfindungsgemäßen Halogenglühlampe liegt vorzugsweise im Bereich von 0,7 Megapascal bis 1,5 Megapascal.In order to reduce the evaporation rate of the filament material from the filament and to prevent blackening of the lamp vessel by evaporating helical material, a filling gas is advantageously provided in the interior of the lamp vessel of the halogen incandescent lamp according to the invention, in addition to a halogen filling a noble gas or a noble gas mixture from the group of xenon Contains krypton and argon. The cold filling pressure of the halogen incandescent lamp according to the invention is preferably in the range from 0.7 megapascals to 1.5 megapascals.

Die erfindungsgemäße Halogenglühlampe weist vorzugsweise ein Lampengefäß auf, das einen den Glühfaden umgebenden kreiszylindrischen Abschnitt mit einem Außendurchmesser im Bereich von 9 Millimeter bis 15 Millimeter und vorzugsweise im Bereich von 10,5 Millimeter bis 13 Millimeter besitzt, um eine für den Halogenkreisprozess ausreichende Aufheizung des Lampengefäßes zu gewährleisten. Das Verhältnis von Außendurchmesser zur Wandstärke des zylindrischen Lampengefäßabschnitts liegt aus dem gleichen Grund vorzugsweise im Bereich von 9 bis 13.The halogen incandescent lamp according to the invention preferably has a lamp vessel which has a circular cylindrical section surrounding the filament with an outer diameter in the range of 9 millimeters to 15 millimeters and preferably in the range of 10.5 millimeters to 13 millimeters, in order to heat up the lamp vessel sufficiently for the halogen cycle to ensure. The ratio of outer diameter to wall thickness of the cylindrical lamp vessel portion is preferably in the range of 9 to 13 for the same reason.

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

Nachstehend wird die Erfindung anhand von bevorzugten Ausführungsbeispielen näher erläutert. Es zeigen:

Figur 1
Eine Seitenansicht einer Halogenglühlampe gemäß den bevorzugten Ausführungsbeispielen der Erfindung in schematischer Darstellung
Figur 2
Eine vergrößerte Darstellung des Glühfadens der in Figur 1 abgebildeten Halogenglühlampe
The invention will be explained in more detail below with reference to preferred exemplary embodiments. Show it:
FIG. 1
A side view of a halogen incandescent lamp according to the preferred embodiments of the invention in a schematic representation
FIG. 2
An enlarged view of the filament of the in FIG. 1 pictured halogen bulb

In Figur 1 ist schematisch der Aufbau einer Halogenglühlampe gemäß den bevorzugten Ausführungsbeispielen der Erfindung dargestellt. Bei dieser Halogenglühlampe handelt es sich um eine Halogenglühlampe des Typs H16.In FIG. 1 schematically the construction of a halogen incandescent lamp according to the preferred embodiments of the invention is shown. This halogen bulb is a type H16 halogen bulb.

Diese Halogenglühlampe besitzt ein aus Quarzglas oder Hartglas, beispielsweise Alumen-Silikatglas, bestehendes Lampengefäß 1, das in dem Metallsockelteil 21 eines Lampensockels 2 fixiert ist. Der sich an das Metallsockelteil 21 anschließende Kunststoffsockelteil 22 des Lampensockels 2 ist mit elektrischen Anschlüssen (nicht abgebildet) zur Energieversorgung der Halogenglühlampe ausgestattet. Das gasdicht verschlossene Lampengefäß 1 besitzt ein abgedichtetes Ende 11, das in dem Metallsockelteil 21 fixiert ist, und einen kreiszylindrischen mittleren Lampengefäßabschnitt 12 sowie eine Lampengefäßkuppe 13, die dem abgedichteten Ende 11 gegenüberliegt und mit einer lichtundurchlässigen Beschichtung versehen ist. Der kreiszylindrische Lampengefäßabschnitt 12 besitzt einen Außendurchmesser von 11,3 Millimeter und seine Wandstärke beträgt 1,1 Millimeter. Im Innenraum des Lampengefäßes 1 befindet sich eine Füllgasmischung mit einem Kaltfülldruck von ca. 1,2 Megapascal, die Halogene und Krypton umfasst. Innerhalb des Lampengefäßes 1 ist im Bereich des kreiszylindrischen Lampengefäßabschnitts 12 ein als Wolframwendel ausgebildeter Glühfaden 3 angeordnet. Die Wickelachse A-A der Wendel 3 ist parallel zur Zylinderachse des kreiszylindrischen Lampengefäßabschnitts 12 ausgerichtet. Die beiden Enden 31, 32 des Glühfadens 3 sind jeweils von einem als Schweißhilfe dienenden Molybdänröhrchen 33, 34 umhüllt und mit einem Stromzuführungsdraht 4 beziehungsweise 5 aus Molybdän verschweißt. Die Stromzuführungsdrähte 4, 5 sind aus dem abgedichteten Ende 11 des Lampengefäßes 1 herausgeführt und mit den elektrischen Anschlüssen der Halogenglühlampe verbunden.This halogen incandescent lamp has a quartz glass or hard glass, for example alumina-silicate glass, existing lamp vessel 1, which is fixed in the metal base part 21 of a lamp cap 2. The adjoining the metal base part 21 plastic base part 22 of the lamp cap 2 is equipped with electrical connections (not shown) for powering the halogen incandescent lamp. The gas-tightly sealed lamp vessel 1 has a sealed end 11 which is fixed in the metal base part 21, and a circular cylindrical central lamp vessel portion 12 and a lamp vessel tip 13 which is opposite to the sealed end 11 and provided with an opaque coating. The circular cylindrical lamp vessel section 12 has an outer diameter of 11.3 millimeters and its wall thickness is 1.1 millimeters. In the interior of the lamp vessel 1 is a filling gas mixture with a cold filling pressure of about 1.2 megapascals, which includes halogens and krypton. Within the lamp vessel 1, a filament 3 designed as a tungsten filament 3 is arranged in the region of the circular-cylindrical lamp vessel section 12. The winding axis AA of the helix 3 is aligned parallel to the cylinder axis of the circular-cylindrical lamp vessel section 12. The two ends 31, 32 of the filament 3 are each covered by a molybdenum tube 33, serving as a welding aid 33, 34 and with a Power supply wire 4 or 5 welded from molybdenum. The power supply wires 4, 5 are led out of the sealed end 11 of the lamp vessel 1 and connected to the electrical terminals of the halogen incandescent lamp.

In der Figur 2 sind Einzelheiten des Glühfadens 3 schematisch dargestellt. Der Glühfaden 3 ist als einfach gewendelte Glühwendel ausgebildet. Er besitzt ein als Einfachgewickel ausgebildeten Wendelkörper 30 und zwei ungewendelte Enden 31, 32. Die ungewendelten Enden 31, 32 sind jeweils von einem Molybdänröhrchen 33, 34 umgeben oder mit einer Molybdänfolie umwickelt, das bzw. die als Schweißhilfe beim Verschweißen der Enden 31, 32 des Glühfadens 3 mit den Stromzuführungsdrähten 4, 5 dienen. Die entlang seiner Wickelachse A-A gemessene Länge L des Wendelkörpers 30 beträgt 2,86 Millimeter. Der Außendurchmesser D des Wendelkörpers 30 bzw. der Windungen des Wickelkörpers 30 beträgt 0,8 Millimeter. Der Wendelkörper besitzt 20 Windungen, das heißt, die Windungszahl W des Glühfadens 3 ist 20. Die Drahtstärke bzw. der Durchmesser des Wolframdrahtes, aus dem der Glühfaden 3 besteht, beträgt 87 Mikrometer. Das Verhältnis des Produktes von Länge L und Außendurchmesser D zur Windungszahl W des Wendelkörpers 30 berechnet sich somit zu einem Wert von 0,11. Die Halogenglühlampe besitzt beim Betrieb an einer nominalen Bordnetzspannung von 13,2 Volt mit diesem Glühfaden eine elektrische Leistungsaufnahme von 21,3 Watt und generiert einen Lichtstrom von 430 Lumen.In the FIG. 2 For details of the filament 3 are shown schematically. The filament 3 is formed as a simple coiled filament. It has a helical body 30 designed as a single wound and two uncoiled ends 31, 32. The uncoiled ends 31, 32 are each surrounded by a molybdenum tube 33, 34 or wrapped with a molybdenum foil, which serves as welding aid in welding the ends 31, 32 of the filament 3 with the power supply wires 4, 5 serve. The measured along its winding axis AA length L of the coil body 30 is 2.86 millimeters. The outer diameter D of the helical body 30 and the windings of the winding body 30 is 0.8 millimeters. The helical body has 20 turns, that is, the number of turns W of the filament 3 is 20. The wire thickness or diameter of the tungsten wire constituting the filament 3 is 87 micrometers. The ratio of the product of length L and outer diameter D to the number of turns W of the helical body 30 is thus calculated to a value of 0.11. The halogen incandescent lamp has an electrical power consumption of 21.3 watts when operated at a nominal vehicle electrical system voltage of 13.2 volts with this filament and generates a luminous flux of 430 lumens.

Die Halogenglühlampe gemäß dem zweiten Ausführungsbeispiel der Erfindung unterscheidet sich von dem oben beschriebenen ersten Ausführungsbeispiel nur durch die Wendeldaten. Der Glühfaden gemäß dem zweiten Ausführungsbeispiel der Erfindung ist ebenfalls als einfach gewendelte Glühwendel ausgebildet. Ihr als Einfachgewickel ausgebildeter Wendelkörper besitzt eine entlang seiner Wickelachse gemessene Länge L von 2,90 Millimeter und einen Außendurchmesser D von 0,85 Millimeter sowie eine Windungszahl W von 20. Die Drahtstärke des Wendeldrahtes beträgt beim Glühfaden gemäß dem zweiten Ausführungsbeispiel der Erfindung 88 Mikrometer. Das Verhältnis des Produktes von Länge L und Außendurchmesser D zur Windungszahl W des Wendelkörpers des Glühfadens gemäß dem zweiten Ausführungsbeispiel der Erfindung berechnet sich somit zu einem Wert von 0,12. Die Halogenglühlampe gemäß dem zweiten Ausführungsbeispiel der Erfindung besitzt beim Betrieb an einer nominalen Bordnetzspannung von 13,2 Volt eine elektrische Leistungsaufnahme von 21,7 Watt und generiert einen Lichtstrom von 475 Lumen.The halogen incandescent lamp according to the second embodiment of the invention differs from the above described first embodiment only by the helical data. The filament according to the second embodiment of the invention is also formed as a simple coiled filament. Her trained as a single wound coil body has a measured along its winding axis length L of 2.90 millimeters and an outer diameter D of 0.85 millimeters and a number of turns W of 20. The wire thickness of the helical wire is in the filament according to the second embodiment of the invention 88 microns. The ratio of the product of length L and outer diameter D to the number of turns W of the filament body of the filament according to the second embodiment of the invention is thus calculated to a value of 0.12. The halogen incandescent lamp according to the second embodiment of the invention has an electrical power consumption of 21.7 watts when operating on a nominal vehicle electrical system voltage of 13.2 volts and generates a luminous flux of 475 lumens.

Die Halogenglühlampe gemäß dem dritten Ausführungsbeispiel der Erfindung unterscheidet sich von den oben beschriebenen Ausführungsbeispielen nur durch die Wendeldaten. Der Glühfaden gemäß dem dritten Ausführungsbeispiel der Erfindung ist ebenfalls als einfach gewendelte Glühwendel ausgebildet. Ihr als Einfachgewickel ausgebildeter Wendelkörper besitzt eine entlang seiner Wickelachse gemessene Länge L von 3,29 Millimeter und einen Außendurchmesser D von 0,8 Millimeter sowie eine Windungszahl W von 21. Die Drahtstärke des Wendeldrahtes beträgt beim Glühfaden gemäß dem dritten Ausführungsbeispiel der Erfindung 87 Mikrometer. Das Verhältnis des Produktes von Länge L und Außendurchmesser D zur Windungszahl W des Wendelkörpers des Glühfadens gemäß dem dritten Ausführungsbeispiel der Erfindung berechnet sich somit zu einem Wert von 0,13. Die Halogenglühlampe gemäß dem dritten Ausführungsbeispiel der Erfindung besitzt beim Betrieb an einer Bordnetzspannung von 13,2 Volt eine elektrische Leistungsaufnahme von 21,7 Watt und generiert einen Lichtstrom von 465 Lumen.The halogen incandescent lamp according to the third embodiment of the invention differs from the above-described embodiments only by the filament data. The filament according to the third embodiment of the invention is also formed as a simple coiled filament. Their helical body formed as a single wound has a length L measured along its winding axis of 3.29 millimeters and an outer diameter D of 0.8 millimeters and a winding number W of 21. The wire thickness of the helical wire in the filament according to the third embodiment of the invention is 87 microns. The ratio of the product of Length L and outer diameter D to the number of turns W of the filament body of the filament according to the third embodiment of the invention is thus calculated to a value of 0.13. The halogen incandescent lamp according to the third embodiment of the invention has an electrical power consumption of 21.7 watts when operating on a vehicle electrical system voltage of 13.2 volts and generates a luminous flux of 465 lumens.

Claims (6)

  1. Halogen bulb for vehicle headlights with a coiled filament (3) disposed inside a transparent lamp vessel (1), wherein the filament (3) is dimensioned such that the halogen bulb, when operated at an on-board network voltage of 13.2 V, generates a luminous flux ranging from 400 lumen to 600 lumen, characterised in that the halogen bulb, when operated at an on-board network voltage of 13.2 V, has an electrical power consumption ranging from 16 watts 22 watts, wherein the diameter or the wire thickness of the filament wire lies in the range of 85 micrometers to 90 micrometers and the filament (3) possesses a coil body (30) embodied as a single coil, which fulfils the following condition: 0.10 ≤ L ⋅ D W ≤ 0.16
    Figure imgb0003
    wherein D is the numerical value measured in millimeters of the outer diameter of the coil body (30), L is the numerical value of the length of the coil body (30) measured along the winding axis in millimetres and W is the number of windings of the coil body (30), and whereby the number of windings W lies in the range of 17 to 23.
  2. Halogen bulb according to claim 1, wherein the length of the coil body (30) measured along its winding axis (A-A) lies in the range of 2.1 millimetres to 3.6 millimetres.
  3. Halogen bulb according to claim 1 or 2, wherein the outer diameter of the coil body (30) lies in the range of 0.6 millimetres to 1.1 millimetres.
  4. Halogen bulb according to one of claims 1 to 3, wherein a filler gas, which contains a noble gas or noble gas mixture from the group Xenon, Krypton and Argon and also halogens, is provided within the interior space of the lamp vessel (1).
  5. Halogen bulb according to one of claims 1 to 4, wherein the lamp vessel (1) in the area of the filament (3) has a circular cylindrical section (12) the outer diameter of which lies in the range of 9 millimetres to 15 millimetres.
  6. Vehicle headlights with a least one halogen bulb according to one of claims 1 to 5.
EP09747812A 2008-11-06 2009-10-23 Halogen bulb for vehicle headlights and vehicle headlight Not-in-force EP2342736B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810056174 DE102008056174A1 (en) 2008-11-06 2008-11-06 Halogen bulb for vehicle headlights and vehicle headlights
PCT/EP2009/063993 WO2010052140A1 (en) 2008-11-06 2009-10-23 Halogen bulb for vehicle headlights and vehicle headlight

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EP2342736A1 EP2342736A1 (en) 2011-07-13
EP2342736B1 true EP2342736B1 (en) 2013-01-02

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DE (1) DE102008056174A1 (en)
WO (1) WO2010052140A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009037858A1 (en) 2009-08-07 2011-02-10 Osram Gesellschaft mit beschränkter Haftung Lighting device e.g. daylight running lamp, for vehicle, has control device formed such that light source is switched on and off when vehicle drive engine is switched on and off and is time-delayed switched off after engine is switched off
DE102010002647A1 (en) * 2010-03-08 2011-09-08 Osram Gesellschaft mit beschränkter Haftung halogen bulb
DE102011004290A1 (en) 2011-02-17 2012-08-23 Osram Ag Halogen bulb for vehicle headlights and vehicle headlights

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005048444A1 (en) 2005-10-07 2007-04-12 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH headlight bulb
DE102007008147A1 (en) * 2007-02-19 2008-08-21 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH halogen bulb

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EP2342736A1 (en) 2011-07-13
WO2010052140A1 (en) 2010-05-14

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