EP2510537B1 - Halogen incandescent lamp for a vehicle headlight - Google Patents

Halogen incandescent lamp for a vehicle headlight Download PDF

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Publication number
EP2510537B1
EP2510537B1 EP11706520.1A EP11706520A EP2510537B1 EP 2510537 B1 EP2510537 B1 EP 2510537B1 EP 11706520 A EP11706520 A EP 11706520A EP 2510537 B1 EP2510537 B1 EP 2510537B1
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EP
European Patent Office
Prior art keywords
lamp
holder part
halogen incandescent
lamp vessel
vessel
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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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EP11706520.1A
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German (de)
French (fr)
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EP2510537A1 (en
Inventor
Peter Helbig
Gerhard Behr
Christian Seichter
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Osram GmbH
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Osram GmbH
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Publication date
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Publication of EP2510537A1 publication Critical patent/EP2510537A1/en
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Publication of EP2510537B1 publication Critical patent/EP2510537B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K7/00—Lamps for purposes other than general lighting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/42—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp
    • H01K1/46—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp supported by a separate part, e.g. base, cap

Definitions

  • the invention relates to a halogen incandescent lamp according to the preamble of patent claim 1.
  • Such a halogen incandescent lamp is for example in the WO 96/05610 A1 disclosed.
  • This publication describes a halogen incandescent lamp for vehicle headlamps with a lamp base which defines a reference plane for aligning the halogen incandescent lamp in the vehicle headlamp and which comprises a cylindrical holder part in which a lamp vessel is fixed.
  • the lamp vessel of the halogen incandescent lamp has a rotationally symmetrical vessel section, which encloses filaments and a dimming cap and which is closed at one end by a lamp vessel tip and at the other end by a lamp vessel seal.
  • the lamp vessel seal is fixed in the holder part and out of it protrude power supply lines for the filaments.
  • the standard ECE Rule 37 prescribes a maximum lamp outline for halogen lamps of the categories H7, H8 and H16.
  • the extension L1 of the lamp in the direction of longitudinal extension from the reference plane of the lamp base oriented perpendicularly thereto to the lamp vessel tip may not exceed the value of 44.0 mm. That is, the condition L1 ⁇ 44.0 mm must be satisfied.
  • halogen-free lamps of categories H7, H8 and H16 must be made with a metal-free zone in order to avoid interference by stray light and to prevent mirror images in the vehicle headlight. This metal-free zone is in FIG. 4 schematically defined by the straight line G and the winding axis A of the filament.
  • the straight line G intersects the axis A of the incandescent filament 3.0 mm below the first turn of the incandescent filament 3 at an angle of 40 degrees or 140 degrees.
  • the angle ⁇ between the straight line G and the horizontal axis F (perpendicular to the filament axis A) FIG. 4 ) is thus 50 degrees.
  • halogen lamps of categories H7, H8 and H16 except filament turns no metal parts may be arranged.
  • ECE Rule 37 dictates that the distance E between the filament and the reference plane R defined by the lamp cap be in the range of 25.0 mm ⁇ 0.1 mm.
  • the value for the height B of the lamp cap above the reference plane R is in the range of 9 mm to 11 mm.
  • the halogen incandescent lamp according to the invention has a lamp base which defines a reference plane for aligning the halogen incandescent lamp in the vehicle headlight and which comprises a holder part with a substantially rotationally symmetrical outer contour for holding a translucent lamp vessel, the holder part having a first holder section connected to a component of the lamp cap and a second Holder section has, from which protrudes the translucent lamp vessel.
  • the second holder portion has a smaller outer diameter than the first holder portion and the height of the lamp cap above the reference plane is according to the invention in the range of 11.5 mm to 16.6 mm.
  • the latter means that the height of the lamp cap portion, which lies between the reference plane and the portion of the lamp vessel protruding from the lamp cap, is in the range of 11.5 mm to 16.6 mm.
  • the halogen incandescent lamp according to the invention can be equipped with a shortened compared to the prior art lamp vessel and in addition the prescribed by the standard ECE Rule 37 distance of at least one filament to the reference plane of 25 mm ⁇ 0.1 mm are maintained. Due to the shortened lamp vessel, which is preferably fixed with its lamp vessel seal in the holder part, the vibration resistance of the lamp vessel holder is increased. In addition, thereby the halogen incandescent lamp according to the invention shortened power supply for the at least one filament. That is, the portions of the supply leads which are connected within the lamp vessel and which are connected to the at least one filament can also be made shorter than in the case of halogen incandescent lamps according to the prior art.
  • the sections of the supply leads for the filament extending within the lamp vessel can be shorter by approximately 30% to 40% than in the case of halogen incandescent lamps according to the prior art.
  • the halogen incandescent lamps according to the invention additionally have an incandescent filament holder with increased vibration resistance.
  • the smaller outer diameter of the second holder section of the holder part for the lamp vessel ensures that the halogen incandescent lamps according to the invention have the metal-free zone described above according to ECE rule 37.
  • the smaller outer diameter of the second holder portion can be realized in different ways to ensure the aforementioned metal-free zone.
  • the first and the second holder portion are each formed cylindrical, wherein the second holder portion, from which protrudes the lamp vessel has a smaller outer diameter than the first holder portion portion which is connected to a component of the lamp cap. That is, the holder part has one along its axis of rotation in the direction of the side from which protrudes the lamp vessel, gradually reduced outside diameter.
  • a second preferred Embodiment of the invention is the second holder portion portion from which protrudes the lamp vessel, a truncated cone and the first holder portion portion which is connected to a component of the lamp cap, cylindrical.
  • the holder part is tapered along its axis of rotation in the direction of the side from which the lamp vessel protrudes.
  • the first holder portion section may be frustoconical and the second holder portion may be cylindrical.
  • the first and the second holder portion may be truncated cone-shaped.
  • the holder part is formed in all variants of the halogen incandescent lamp according to the invention such that its outer diameter along the axis of rotation of the holder part in the direction of the side from which the lamp vessel protrudes, is reduced stepwise or in the manner of a truncated cone to the metal-free zone according to To ensure ECE rule 37.
  • the holder part of the halogen incandescent lamp according to the invention can be connected in a simple manner to a component of the lamp base, in particular to a cylindrical metal sleeve.
  • the height of the lamp cap of the halogen incandescent lamp according to the invention is in the range of 12 mm to 16.6 mm and particularly preferably in the range of 13 mm to 16 mm above the reference plane of the lamp cap.
  • the condition of the metal-free zone would no longer be possible and at a lower height of the lamp cap than 11.5 mm above the reference plane, no appreciable improvement in the vibration resistance of the halogen incandescent lamp could be achieved.
  • the height of the second holder portion is preferably in the range of 3 mm to 6 mm in order to achieve the simplest possible increase in the height of the lamp cap above the reference plane and the other components of the lamp cap of the halogen incandescent lamp according to the invention unchanged from the lamp base of the halogen incandescent lamp according to the state to be able to take over the technology.
  • the at least one filament of the halogen incandescent lamp according to the invention is surrounded for reasons of production by a cylindrical lamp vessel section which is led out at one end by means of a lamp vessel seal, from the power supply lines for the at least one filament, and is closed at the other end by means of a lamp vessel tip.
  • the length of the cylindrical lamp vessel portion is also smaller or equal to 18 mm, in order to ensure a high vibration resistance of the lamp by a shortest possible lamp vessel and on the other to allow a correspondingly small lamp vessel volume, so that only a small amount of noble gas, such as Xenon or krypton, which is required for the filling of the lamp vessel.
  • noble gas such as Xenon or krypton
  • the outer diameter of the cylindrical lamp vessel portion of the halogen incandescent lamp according to the invention is preferably in the range of 9 mm to 10 mm.
  • the halogen incandescent lamps according to the invention require a smaller amount of noble gas, such as, for example, xenon or krypton, so that this also results in cost savings.
  • the lamp vessel of the halogen incandescent lamp according to the invention is preferably made of hard glass, for example alkali-free alkaline earth aluminosilicate glass.
  • hard glass for example alkali-free alkaline earth aluminosilicate glass.
  • the distance of the filament to the reference plane in the range of 25.0 mm ⁇ 0.1 mm to meet the requirements of the standard ECE rule 37 for these lamp categories.
  • 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 category H8 or H16 halogen bulb used as a light source in vehicle headlights.
  • This halogen bulb has a tempered glass, such as alkali-free Erdalakali alumino-silicate glass, existing translucent 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 the electrical terminals 6 of the halogen incandescent lamp.
  • the gas-tightly sealed lamp vessel 1 has a sealed end 11 which is fixed in a holder part 214 of the metal base part 21, and a hollow, circular cylindrical central vessel portion 12 and a lamp vessel tip 13 which is opposite the sealed end 11 and provided with an opaque coating.
  • the circular-cylindrical lamp vessel section 12 has an outer diameter of 9.5 mm, a wall thickness of 0.9 mm and an inner diameter of 7.7 mm.
  • a filling gas mixture comprising halogens and noble gas, such as krypton or xenon.
  • the measured at 22 degrees Celsius filling gas pressure is in the range of 1.5 to 1.8 megapascals.
  • a filament 3 designed as a tungsten filament.
  • the winding axis A of the filament 3 is arranged offset parallel to the cylinder axis of the circular-cylindrical lamp vessel section 12.
  • the two ends 31, 32 of the coil 3 are each welded to a power supply wire 4, 5 made of molybdenum.
  • the two power supply wires 4, 5 are from the sealed end 11 led out of the lamp vessel 1 and each connected to one of the two electrical connections 6 of the halogen incandescent lamp.
  • the section of the power supply wire 4 projecting into the circular-cylindrical lamp vessel section 12 extends up to a height of approximately 10.5 mm above the sealed end 11 of the lamp vessel and is thus 29% shorter than halogen incandescent lamps according to the prior art.
  • the section of the other power supply wire 5 projecting into the circular-cylindrical lamp vessel section 12 extends up to a height of approximately 5.2 mm above the sealed end 11 of the lamp vessel and is therefore 37% shorter than halogen incandescent lamps according to the prior art.
  • the two electrical connections 6 are formed as metallic contact lugs whose first end is respectively welded to the power supply wire 4 or 5 and whose second end is accessible via the plug-like formed plastic base part 22 for connecting the supply voltage of the halogen incandescent lamp.
  • the welding of power supply wires 4, 5 and contact lugs 6 by means of laser via openings in the first metal sleeve 211, as for example in the WO 2007/096330 A1 is described.
  • the sealed end 11 of the lamp vessel 1 is formed as a pinch seal.
  • the surface of the sealed end 11 has a plurality of webs or nubs 110 (FIG. FIG. 2 ), which cooperate with metallic tabs of the holder part 214 for fixing the lamp vessel 1 in the lamp base 2.
  • the lamp base 2 consists of a molded plastic injection molded plastic base part 22, in the electrical connections 6 of the halogen incandescent lamp are embedded, and a metal base part 21, which is composed of a plurality of metallic components 211, 212, 213, 214.
  • the plastic base part 22 has a surface 220 from which protrudes a first, hollow cylindrical metal sleeve 211.
  • This first hollow cylindrical metal sleeve 211 is connected by means of injection molding technology or by high-frequency melting technique with the plastic base part 22 and forms a component of the metal base part 21.
  • the lateral surface of the first hollow cylindrical metal sleeve 211 has an opening through which a pressure spring 215 protrudes, in the radial direction of the first metal sleeve 211 has a spring action.
  • a sealing ring 23 made of silicone, which is arranged coaxially with the first, hollow cylindrical metal sleeve 211.
  • the sealing ring 23 is slightly conically shaped, that is, its inner diameter and its outer diameter increase from its resting on the surface 220 underside in the direction of its reference tabs 213 a facing upper side. As a result, the sealing ring 23 is fixed with a clamping fit in a groove formed by the plastic base part 22 groove.
  • the metal base part 21 also has a second hollow-cylindrical metal sleeve 212, which has an annular collar 213 with three reference tabs 213a on its lower edge facing the first metal sleeve 211.
  • the annular collar 213 is welded to the first metal sleeve 211, so that the cylinder axes of the two metal sleeves 211, 212 either are arranged coaxially or parallel offset.
  • the three reference tabs 213a project from the lateral surface of the second hollow-cylindrical metal sleeve 212, each extending in the direction of a diameter of the second metal sleeve 212 and are arranged equidistantly along the circumference of the annular collar 213.
  • the sealing ring 23 facing bottom of the three reference tabs 213 a defines a substantially perpendicular to the cylinder axis of the metal sleeve 211 and the lamp vessel section 12 oriented reference plane R for alignment of the halogen incandescent lamp in the vehicle headlight. It corresponds to the reference level cited in standard ECE 324, rule 37.
  • the metal base part 21 also includes the already mentioned above, conical metallic holder part 214, which serves to support the sealed end 11 of the lamp vessel 1.
  • the height B of the lamp cap 2 above the reference plane R is about 13.6 mm.
  • the holder part 214 ( FIG. 3
  • the outer diameter of the hollow cylindrical first holder portion 2141 is slightly smaller than the inner diameter of the second metal sleeve 212.
  • the hollow cylindrical first section 2141 of the holder part 214 is inserted into the second hollow cylindrical metal sleeve 212 and welded thereto.
  • the frustoconical second holder section 2142 has a reduced outer diameter at its upper side 2140 facing the lamp vessel 1, which is smaller than the outer diameter of the hollow cylindrical first portion 2141 of the holder part 214.
  • the outer diameter of the holder part 214 is 15 mm in the region of the hollow cylindrical first holder part 2141. In the region of the frustoconical second holder section 2142, the outer diameter of the holder part 214 on the upper side facing the lamp vessel 2140 is only 12 mm.
  • the height of the conical second holder portion 2142 is 3.5 mm and the height of the hollow cylindrical first holder portion 2141 is 6 mm.
  • the upper side 2140 of the holder part 214 has an opening 2143 for receiving the sealed end 11 of the lamp vessel 1 and eight spring tabs 2144 which abut against the sealed end 11 of the lamp vessel 1 with a clamping fit.
  • the spring tabs 2144 cooperate with the webs or nubs 110 on the surface of the sealed end 11 of the lamp vessel 1 together, which serve them as a stop or guide.
  • Each four spring tabs 2144 abut against the two opposite sides of the sealed end 11 of the lamp vessel 1, so that the sealed end 11 is fixed with a clamping fit between the spring tabs 2144.
  • a detailed description of this clamping seat is for example in the WO 96/05610 A1 disclosed.
  • the lamp vessel 1 and the metal base part protrude into the interior of the headlamp, so that the underside of the reference lugs 213a facing away from the lamp vessel on the inside of the lamp Headlamp reflector (not shown) and the sealing ring 23 rests on the outside of the headlamp reflector. That is, the wall of the headlamp reflector is disposed with a press fit between the reference tabs 213 a and the seal ring 23.
  • the pressure spring 215 is resiliently against the edge of the reflector opening and thereby causes a locking of the halogen incandescent lamp perpendicular to the cylinder axis of the first metal sleeve 211st Details of this form of locking are, for example, in the WO 97/25733 A1 disclosed.
  • FIG. 1 shown halogen bulb instead of in the FIG. 3 shown holder part 214 in FIG. 5 shown holder part 214 'used.
  • the halogen incandescent lamps according to the first and second embodiments of the invention agree.
  • the holder part 214 ' ( FIG. 5 ) is also formed as a metal sleeve and has a hollow cylindrical first portion 2141 'and an adjoining hollow cylindrical second portion 2142'.
  • the outer diameter of the hollow cylindrical first holder portion 2141 ' is slightly smaller than the inner diameter of the second metal sleeve 212.
  • the hollow cylindrical first portion 2141' of the holder portion 214 ' is inserted into the second hollow cylindrical metal sleeve 212 and welded thereto.
  • the hollow cylindrical second holder portion 2142 ' has a reduced outer diameter smaller than the outer diameter of the hollow cylindrical first portion 2141 'of the holder part 214' is.
  • the outer diameter of the holder part 214 ' is 15 mm in the area of the hollow cylindrical first holder part 2141'. In the area of the hollow-cylindrical second holder portion 2142 ', the outer diameter of the holder part 214' is only 12 mm.
  • the height of the second holder portion 2142 ' is 3.5 mm, and the height of the hollow cylindrical first holder portion 2141' is 6 mm.
  • the upper side 2140 'and the spring tabs of the holder part 214' according to the second embodiment of the invention are designed in the same way as the upper part 2140 and the spring tabs 2144 of the holder part 214 according to the first embodiment of the invention.
  • the invention is not limited to the embodiments described in detail above.
  • the invention can also be applied to halogen incandescent lamps of other categories of ECE Rule 37.

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Description

Die Erfindung betrifft eine Halogenglühlampe gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a halogen incandescent lamp according to the preamble of patent claim 1.

I. Stand der Technik I. State of the art

Eine derartige Halogenglühlampe ist beispielweise in der WO 96/05610 A1 offenbart. Diese Offenlegungsschrift beschreibt eine Halogenglühlampe für Fahrzeugscheinwerfer mit einem Lampensockel, der eine Referenzebene zur Ausrichtung der Halogenglühlampe im Fahrzeugscheinwerfer definiert und der ein zylindrisches Halterteil umfasst, in dem ein Lampengefäß fixiert ist. Das Lampengefäß der Halogenglühlampe besitzt einen rotationssymmetrischen Gefäßabschnitt, der Glühfäden und eine Abblendkappe umschließt und der an einem Ende durch eine Lampengefäßkuppe und am anderen Ende durch eine Lampengefäßabdichtung verschlossen ist. Die Lampengefäßabdichtung ist in dem Halterteil fixiert und aus ihr ragen Stromzuführungen für die Glühfäden heraus.Such a halogen incandescent lamp is for example in the WO 96/05610 A1 disclosed. This publication describes a halogen incandescent lamp for vehicle headlamps with a lamp base which defines a reference plane for aligning the halogen incandescent lamp in the vehicle headlamp and which comprises a cylindrical holder part in which a lamp vessel is fixed. The lamp vessel of the halogen incandescent lamp has a rotationally symmetrical vessel section, which encloses filaments and a dimming cap and which is closed at one end by a lamp vessel tip and at the other end by a lamp vessel seal. The lamp vessel seal is fixed in the holder part and out of it protrude power supply lines for the filaments.

Die Norm ECE-Regel 37 schreibt für Halogenglühlampen der Kategorien H7, H8 und H16 einen maximalen Lampenumriss vor. Insbesondere darf die Ausdehnung L1 der Lampe in Längserstreckungsrichtung von der senkrecht dazu orientierten Referenzebene des Lampensockels bis zur Lampengefäßkuppe den Wert von 44,0 mm nicht überschreiten. Das heißt, die Bedingung L1 < 44,0 mm muss erfüllt sein. Außerdem muss gemäß der ECE-Regel 37 bei den Halogenglühlampen der Kategorien H7, H8 und H16 eine metallfreie Zone gewährleistet sein, um eine Störung durch Streulicht und Spiegelbilder im Fahrzeugscheinwerfer zu verhindern. Diese metallfreie Zone ist in Figur 4 schematisch mittels der Geraden G und der Wickelachse A der Glühwendel definiert. Die Gerade G schneidet die Achse A der Glühwendel 3,0 mm unterhalb der ersten Windung der Glühwendel 3 unter einem Winkel von 40 Grad bzw. 140 Grad. Der Winkel α zwischen der Geraden G und der senkrecht zur Glühwendelachse A verlaufenden Waagerechten F (Figur 4) ist somit 50 Grad. In dem Bereich innerhalb des Lampengefäßes 1, der bei der in Figur 4 gewählten Orientierung der Lampe oberhalb der Geraden G und rechts von der Glühwendelachse A liegt, dürfen gemäß der Norm ECE-Regel 37 bei Halogenglühlampen der Kategorien H7, H8 und H16 außer Glühwendelwindungen keine Metallteile angeordnet sein. Ferner ist für Halogenglühlampen der vorgenannten Kategorien durch die ECE-Regel 37 vorgeschrieben, dass der Abstand E zwischen der Glühwendel und der durch den Lampensockel definierten Referenzebene R im Bereich von 25,0 mm ± 0,1 mm liegt. Bei Halogenglühlampen gemäß dem Stand der Technik liegt der Wert für die Höhe B des Lampensockels über der Referenzebene R im Bereich von 9 mm bis 11 mm.The standard ECE Rule 37 prescribes a maximum lamp outline for halogen lamps of the categories H7, H8 and H16. In particular, the extension L1 of the lamp in the direction of longitudinal extension from the reference plane of the lamp base oriented perpendicularly thereto to the lamp vessel tip may not exceed the value of 44.0 mm. That is, the condition L1 <44.0 mm must be satisfied. In addition, according to ECE Rule 37, halogen-free lamps of categories H7, H8 and H16 must be made with a metal-free zone in order to avoid interference by stray light and to prevent mirror images in the vehicle headlight. This metal-free zone is in FIG. 4 schematically defined by the straight line G and the winding axis A of the filament. The straight line G intersects the axis A of the incandescent filament 3.0 mm below the first turn of the incandescent filament 3 at an angle of 40 degrees or 140 degrees. The angle α between the straight line G and the horizontal axis F (perpendicular to the filament axis A) FIG. 4 ) is thus 50 degrees. In the area within the lamp vessel 1, which at the in FIG. 4 selected orientation of the lamp is above the line G and right of the filament axis A, according to the standard ECE Rule 37 halogen lamps of categories H7, H8 and H16 except filament turns no metal parts may be arranged. Further, for halogen lamps of the foregoing categories, ECE Rule 37 dictates that the distance E between the filament and the reference plane R defined by the lamp cap be in the range of 25.0 mm ± 0.1 mm. In the case of halogen incandescent lamps according to the prior art, the value for the height B of the lamp cap above the reference plane R is in the range of 9 mm to 11 mm.

II. Darstellung der Erfindung II. Presentation of the invention

Es ist Aufgabe der Erfindung, eine gattungsgemäße Halogenglühlampe für Fahrzeugscheinwerfer bereitzustellen, die eine erhöhte Stabilität gegenüber Vibrationen besitzt.It is an object of the invention to provide a generic halogen incandescent lamp for vehicle headlights, which has an increased stability to vibration.

Diese Aufgabe wird durch eine Halogenglühlampe mit den Merkmalen gemäß dem Patentanspruch 1 gewährleistet. Besonders vorteilhafte Ausgestaltungen der Erfindung sind in den abhängigen Patentansprüchen beschrieben.This object is ensured by a halogen incandescent lamp having the features according to the patent claim 1. Especially advantageous embodiments of the invention are described in the dependent claims.

Die erfindungsgemäße Halogenglühlampe besitzt einen Lampensockel, der eine Referenzebene zur Ausrichtung der Halogenglühlampe im Fahrzeugscheinwerfer definiert und der ein Halterteil mit einer im wesentlichen rotationssymmetrischen Außenkontur zur Halterung eines lichtdurchlässigen Lampengefäßes umfasst, wobei das Halterteil einen ersten, mit einem Bauteil des Lampensockels verbundenen Halterteilabschnitt und einen zweiten Halterteilabschnitt besitzt, aus dem das lichtdurchlässige Lampengefäß herausragt. Erfindungsgemäß besitzt der zweite Halterteilabschnitt einen kleineren Außendurchmesser als der erste Halterteilabschnitt und die Höhe des Lampensockels über der Referenzebene liegt erfindungsgemäß im Bereich von 11,5 mm bis 16,6 mm. Letzteres heißt, dass die Höhe des Lampensockelabschnitts, der zwischen der Referenzebene und dem aus dem Lampensockel herausragenden Abschnitt des Lampengefäßes liegt, im Bereich von 11,5 mm bis 16,6 mm liegt.The halogen incandescent lamp according to the invention has a lamp base which defines a reference plane for aligning the halogen incandescent lamp in the vehicle headlight and which comprises a holder part with a substantially rotationally symmetrical outer contour for holding a translucent lamp vessel, the holder part having a first holder section connected to a component of the lamp cap and a second Holder section has, from which protrudes the translucent lamp vessel. According to the invention, the second holder portion has a smaller outer diameter than the first holder portion and the height of the lamp cap above the reference plane is according to the invention in the range of 11.5 mm to 16.6 mm. The latter means that the height of the lamp cap portion, which lies between the reference plane and the portion of the lamp vessel protruding from the lamp cap, is in the range of 11.5 mm to 16.6 mm.

Dadurch kann die erfindungsgemäße Halogenglühlampe mit einem im Vergleich zum Stand der Technik verkürzten Lampengefäß ausgestattet werden und zusätzlich der von der Norm ECE-Regel 37 vorgeschriebene Abstand des mindestens einen Glühfadens zur Referenzebene von 25 mm ± 0,1 mm gewahrt werden. Aufgrund des verkürzten Lampengefäßes, das vorzugsweise mit seiner Lampengefäßabdichtung im Halterteil fixiert ist, wird die Vibrationsbeständigkeit der Lampengefäßhalterung erhöht. Außerdem kann dadurch die erfindungsgemäße Halogenglühlampe verkürzte Stromzuführungen für den mindestens einen Glühfaden besitzen. Das heißt, die innerhalb des Lampengefäßes verlaufenden Abschnitte der Stromzuführungen, die mit dem mindestens einen Glühfaden verbunden sind, können ebenfalls kürzer ausgebildet als bei Halogenglühlampen gemäß dem Stand der Technik. Insbesondere können bei erfindungsgemäßen Halogenglühlampen die innerhalb des Lampengefäßes verlaufenden Abschnitte der Stromzuführungen für den Glühfaden um ca. 30% bis 40% kürzer sein als bei Halogenglühlampen gemäß dem Stand der Technik. Dadurch besitzen die erfindungsgemäßen Halogenglühlampen zusätzlich auch eine Glühfadenhalterung mit erhöhter Vibrationsbeständigkeit. Der kleinere Außendurchmesser des zweiten Halterteilabschnitt des Halterteils für das Lampengefäß gewährleistet, dass die erfindungsgemäßen Halogenglühlampen die bereits weiter oben beschriebene metallfreie Zone gemäß der ECE-Regel 37 besitzen.As a result, the halogen incandescent lamp according to the invention can be equipped with a shortened compared to the prior art lamp vessel and in addition the prescribed by the standard ECE Rule 37 distance of at least one filament to the reference plane of 25 mm ± 0.1 mm are maintained. Due to the shortened lamp vessel, which is preferably fixed with its lamp vessel seal in the holder part, the vibration resistance of the lamp vessel holder is increased. In addition, thereby the halogen incandescent lamp according to the invention shortened power supply for the at least one filament. That is, the portions of the supply leads which are connected within the lamp vessel and which are connected to the at least one filament can also be made shorter than in the case of halogen incandescent lamps according to the prior art. In particular, in the case of halogen incandescent lamps according to the invention, the sections of the supply leads for the filament extending within the lamp vessel can be shorter by approximately 30% to 40% than in the case of halogen incandescent lamps according to the prior art. As a result, the halogen incandescent lamps according to the invention additionally have an incandescent filament holder with increased vibration resistance. The smaller outer diameter of the second holder section of the holder part for the lamp vessel ensures that the halogen incandescent lamps according to the invention have the metal-free zone described above according to ECE rule 37.

Der kleinere Außendurchmesser des zweiten Halterteilabschnitts kann auf unterschiedliche Weise verwirklicht werden, um die vorgenannte metallfreie Zone zu gewährleisten. Gemäß einem ersten bevorzugten Ausführungsbeispiel der Erfindung sind der erste und der zweite Halterteilabschnitt jeweils zylindrisch ausgebildet, wobei der zweite Halterteilabschnitt, aus dem das Lampengefäß herausragt, einen kleineren Außendurchmesser besitzt als der erste Halterteilabschnitt, der mit einem Bauteil des Lampensockels verbunden ist. Das heißt, das Halterteil besitzt einen entlang seiner Rotationsachse in Richtung der Seite, aus der das Lampengefäß herausragt, stufenartig reduzierten Außendurchmesser. Gemäß einem zweiten bevorzugten Ausführungsbeispiel der Erfindung ist der zweite Halterteilabschnitt, aus dem das Lampengefäß herausragt, kegelstumpfartig und der erste Halterteilabschnitt, der mit einem Bauteil des Lampensockels verbunden ist, zylindrisch ausgebildet. Das heißt, das Halterteil ist entlang seiner Rotationsachse in Richtung der Seite, aus der das Lampengefäß herausragt, konisch verjüngt ausgebildet. Alternativ kann auch der erste Halterteilabschnitt kegelstumpfartig und der zweite Halterteilabschnitt zylindrisch ausgebildet sein. Als weitere Alternative können auch der erste und der zweite Halterteilabschnitt kegelstumpfartig ausgebildet sein.The smaller outer diameter of the second holder portion can be realized in different ways to ensure the aforementioned metal-free zone. According to a first preferred embodiment of the invention, the first and the second holder portion are each formed cylindrical, wherein the second holder portion, from which protrudes the lamp vessel has a smaller outer diameter than the first holder portion portion which is connected to a component of the lamp cap. That is, the holder part has one along its axis of rotation in the direction of the side from which protrudes the lamp vessel, gradually reduced outside diameter. According to a second preferred Embodiment of the invention is the second holder portion portion from which protrudes the lamp vessel, a truncated cone and the first holder portion portion which is connected to a component of the lamp cap, cylindrical. That is, the holder part is tapered along its axis of rotation in the direction of the side from which the lamp vessel protrudes. Alternatively, the first holder portion section may be frustoconical and the second holder portion may be cylindrical. As a further alternative, the first and the second holder portion may be truncated cone-shaped.

Mit anderen Worten formuliert, das Halterteil ist bei allen Varianten der erfindungsgemäßen Halogenglühlampe derart ausgebildet, dass sein Außendurchmesser entlang der Rotationsachse des Halterteils in Richtung der Seite, aus der das Lampengefäß herausragt, stufenartig oder nach Art eines Kegelstumpfes reduziert ist, um die metallfreie Zone gemäß ECE Regel 37 zu gewährleisten. Bei allen vorgenannten Varianten kann das Halterteil der erfindungsgemäßen Halogenglühlampe auf einfache Weise mit einem Bauteil des Lampensockels, insbesondere mit einer zylindrischen Metallhülse, verbunden werden.In other words, the holder part is formed in all variants of the halogen incandescent lamp according to the invention such that its outer diameter along the axis of rotation of the holder part in the direction of the side from which the lamp vessel protrudes, is reduced stepwise or in the manner of a truncated cone to the metal-free zone according to To ensure ECE rule 37. In all the aforementioned variants, the holder part of the halogen incandescent lamp according to the invention can be connected in a simple manner to a component of the lamp base, in particular to a cylindrical metal sleeve.

Vorzugsweise liegt die Höhe des Lampensockels der erfindungsgemäßen Halogenglühlampe im Bereich von 12 mm bis 16,6 mm und besonders bevorzugt im Bereich von 13 mm bis 16 mm über der Referenzebene des Lampensockels. Bei einer größeren Höhe des Lampensockels von mehr als 16,6 mm über der Referenzebene ließe sich auch mit einem konischen Halterteil die Bedingung der metallfreien Zone nicht mehr gewährleisten und bei einer geringeren Höhe des Lampensockels als 11,5 mm über der Referenzebene ließe sich keine nennenswerte Verbesserung der Vibrationsfestigkeit der Halogenglühlampe erreichen.Preferably, the height of the lamp cap of the halogen incandescent lamp according to the invention is in the range of 12 mm to 16.6 mm and particularly preferably in the range of 13 mm to 16 mm above the reference plane of the lamp cap. With a greater height of the lamp cap of more than 16.6 mm above the reference plane, even with a conical holder part, the condition of the metal-free zone would no longer be possible and at a lower height of the lamp cap than 11.5 mm above the reference plane, no appreciable improvement in the vibration resistance of the halogen incandescent lamp could be achieved.

Die Höhe des zweiten Halterteilabschnitts liegt vorzugsweise im Bereich von 3 mm bis 6 mm, um auf möglichst einfache Weise eine Vergrößerung der Höhe des Lampensockels über der Referenzebene zu erreichen und dabei die anderen Komponenten des Lampensockels der erfindungsgemäßen Halogenglühlampe unverändert vom Lampensockel der Halogenglühlampe gemäß dem Stand der Technik übernehmen zu können.The height of the second holder portion is preferably in the range of 3 mm to 6 mm in order to achieve the simplest possible increase in the height of the lamp cap above the reference plane and the other components of the lamp cap of the halogen incandescent lamp according to the invention unchanged from the lamp base of the halogen incandescent lamp according to the state to be able to take over the technology.

Der mindestens eine Glühfaden der erfindungsgemäßen Halogenglühlampe ist aus fertigungstechnisch Gründen von einem zylindrischen Lampengefäßabschnitt umgeben, der an einem Ende mittels einer Lampengefäßabdichtung, aus der Stromzuführungen für den mindestens einen Glühfaden herausgeführt sind, und am anderen Ende mittels einer Lampengefäßkuppe verschlossen ist.The at least one filament of the halogen incandescent lamp according to the invention is surrounded for reasons of production by a cylindrical lamp vessel section which is led out at one end by means of a lamp vessel seal, from the power supply lines for the at least one filament, and is closed at the other end by means of a lamp vessel tip.

Die Länge des zylindrischen Lampengefäßabschnitts ist zudem erfindungsgemäß kleiner oder gleich 18 mm, um durch ein möglichst kurzes Lampengefäß zum Einen eine hohe Vibrationsfestigkeit der Lampe zu gewährleisten und zum Anderen ein entsprechend kleines Lampengefäßvolumen zu ermöglichen, so dass nur eine geringe Menge an Edelgas, wie beispielsweise Xenon oder Krypton, für die Füllung des Lampengefäßes erforderlich ist.The length of the cylindrical lamp vessel portion is also smaller or equal to 18 mm, in order to ensure a high vibration resistance of the lamp by a shortest possible lamp vessel and on the other to allow a correspondingly small lamp vessel volume, so that only a small amount of noble gas, such as Xenon or krypton, which is required for the filling of the lamp vessel.

Der Außendurchmesser des zylindrischen Lampengefäßabschnitts der erfindungsgemäßen Halogenglühlampe liegt vorzugsweise im Bereich von 9 mm bis 10 mm.The outer diameter of the cylindrical lamp vessel portion of the halogen incandescent lamp according to the invention is preferably in the range of 9 mm to 10 mm.

Dadurch kann ebenfalls das Volumen des Lampengefäßes und der Abstand des Glühfadens zum Lampengefäß sowie die Menge des Füllgases für den Halogenkreisprozess an die elektrische Leistungsaufnahme der erfindungsgemäßen Halogenglühlampe angepasst werden. Insbesondere benötigen die erfindungsgemäßen Halogenglühlampen aufgrund der geringen Abmessungen ihres Lampengefäßes eine geringere Menge an Edelgas, wie beispielsweise Xenon oder Krypton, so dass sich dadurch auch eine Kosteneinsparung ergibt.This also allows the volume of the lamp vessel and the distance of the filament to the lamp vessel and the amount of filling gas for the halogen cycle to the electrical power consumption of the halogen incandescent lamp according to the invention can be adjusted. In particular, because of the small dimensions of their lamp vessel, the halogen incandescent lamps according to the invention require a smaller amount of noble gas, such as, for example, xenon or krypton, so that this also results in cost savings.

Das Lampengefäß der erfindungsgemäßen Halogenglühlampe besteht vorzugsweise aus Hartglas, beispielsweise aus alkalifreiem Erdalkali-Alumino-Silikatglas. Dadurch werden für die Stromzuführungen keine Molybdänfolieneinschmelzung benötigt und die Stromzuführungen für den mindestens einen Glühfaden können als Drähte unmittelbar durch die Lampengefäßabdichtung gasdicht nach außen hindurchgeführt werden, wodurch wiederum Lampengefäße mit sehr kleinen Abmessungen ermöglicht werden.The lamp vessel of the halogen incandescent lamp according to the invention is preferably made of hard glass, for example alkali-free alkaline earth aluminosilicate glass. As a result, Molybdänfolieneinschmelzung are required for the power supply lines and the power supply lines for the at least one filament can be passed as wires directly through the lamp vessel sealing gas-tight to the outside, which in turn lamp vessels are made possible with very small dimensions.

Bei den erfindungsgemäßen Halogenglühlampen liegt im Fall von Halogenglühlampen der Kategorien H7, H8 und H16 der Abstand des Glühfadens zur Referenzebene im Bereich von 25,0 mm ± 0,1 mm, um die Vorgaben der Norm ECE-Regel 37 für diese Lampenkategorien zu erfüllen.In the halogen incandescent lamps according to the invention in the case of halogen lamps of categories H7, H8 and H16, the distance of the filament to the reference plane in the range of 25.0 mm ± 0.1 mm to meet the requirements of the standard ECE rule 37 for these lamp categories.

III. Beschreibung des bevorzugten Ausführungsbeispiels III. Description of the Preferred Embodiment

Nachstehend wird die Erfindung anhand eines bevorzugten Ausführungsbeispiels näher erläutert. Es zeigen:

Figur 1
Eine Seitenansicht einer Halogenglühlampe gemäß einem bevorzugten Ausführungsbeispiel der Erfindung in schematischer und teilweise geschnittener Darstellung
Figur 2
Eine Seitenansicht des Lampengefäßes der in Figur 1 abgebildeten Halogenglühlampe ohne Lampensockel
Figur 3
Eine Darstellung des zum Lampensockel der in Figur 1 abgebildeten Halogenglühlampe gehörenden Halterteils gemäß dem ersten Ausführungsbeispiel der Erfindung
Figur 4
Einen Abschnitt der in Figur 1 abgebildeten Halogenglühlampe
Figur 5
Eine Seitenansicht des Halterteils des Lampensockels gemäß dem zweiten Ausführungsbeispiel der Erfindung
The invention will be explained in more detail below with reference to a preferred embodiment. Show it:
FIG. 1
A side view of a halogen incandescent lamp according to a preferred embodiment of the invention in a schematic and partially sectioned view
FIG. 2
A side view of the lamp vessel of the illustrated in Figure 1 halogen bulb without lamp base
FIG. 3
A representation of the lamp base of the FIG. 1 illustrated halogen incandescent lamp belonging holder part according to the first embodiment of the invention
FIG. 4
A section of in FIG. 1 pictured halogen bulb
FIG. 5
A side view of the holder part of the lamp cap according to the second embodiment of the invention

In Figur 1 ist schematisch der Aufbau einer Halogenglühlampe gemäß den bevorzugten Ausführungsbeispielen der Erfindung dargestellt. Bei dieser Halogenglühlampe handelt es sich beispielsweise um eine Halogenglühlampe der Kategorie H8 oder H16, die als Lichtquelle in Fahrzeugscheinwerfern verwendet wird.In FIG. 1 schematically the construction of a halogen incandescent lamp according to the preferred embodiments of the invention is shown. For example, this halogen bulb is a category H8 or H16 halogen bulb used as a light source in vehicle headlights.

Diese Halogenglühlampe besitzt ein aus Hartglas, beispielsweise alkalifreiem Erdalakali-Alumino-Silikatglas, bestehendes lichtdurchlässiges Lampengefäß 1, das in dem Metallsockelteil 21 eines Lampensockels 2 fixiert ist. Das sich an das Metallsockelteil 21 anschließende Kunststoffsockelteil 22 des Lampensockels 2 ist mit den elektrischen Anschlüssen 6 der Halogenglühlampe ausgestattet. Das gasdicht verschlossene Lampengefäß 1 besitzt ein abgedichtetes Ende 11, das in einem Halterteil 214 des Metallsockelteils 21 fixiert ist, und einen hohlen, 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 9,5 mm, eine Wandstärke von 0,9 mm und einen Innendurchmesser von 7,7 mm. Die Länge L2 des kreiszylindrischen Lampengefäßabschnitts 12 in Richtung seiner Zylinderachse gemessen, das heißt die Längsausdehnung des Lampengefäßes 1 zwischen dem abgedichteten Ende 11 und der Lampengefäßkuppe 13, beträgt ca. 14,2 mm. Im Innenraum des Lampengefäßes 1 befindet sich eine Füllgasmischung, die Halogene und Edelgas, beispielsweise Krypton oder Xenon, umfasst. Der bei 22 Grad Celsius gemessene Füllgasdruck liegt im Bereich von 1,5 bis 1,8 Megapascal. Innerhalb des Lampengefäßes 1 befindet sich im Bereich des kreiszylindrischen mittleren Lampengefäßabschnitts 12 ein als Wolframwendel ausgebildeter Glühfaden 3. Die Wickelachse A der Wendel 3 ist parallel versetzt zur Zylinderachse des kreiszylindrischen Lampengefäßabschnitts 12 angeordnet. Die beiden Enden 31, 32 der Wendel 3 sind jeweils mit einem Stromzuführungsdraht 4, 5 aus Molybdän verschweißt. Die beiden Stromzuführungsdrähte 4, 5 sind aus dem abgedichteten Ende 11 des Lampengefäßes 1 herausgeführt und jeweils mit einem der beiden elektrischen Anschlüsse 6 der Halogenglühlampe verbunden. Der in den kreiszylindrischen Lampengefäßabschnitt 12 hineinragende Abschnitt des Stromzuführungsdrahtes 4 erstreckt sich bis zu einer Höhe von ca. 10,5 mm über dem abgedichteten Ende 11 des Lampengefäßes und ist damit um 29% kürzer als Halogenglühlampen gemäß dem Stand der Technik. Der in den kreiszylindrischen Lampengefäßabschnitt 12 hineinragende Abschnitt des anderen Stromzuführungsdrahtes 5 erstreckt sich bis zu einer Höhe von ca. 5,2 mm über dem abgedichteten Ende 11 des Lampengefäßes und ist damit um 37% kürzer als Halogenglühlampen gemäß dem Stand der Technik. Die beiden elektrischen Anschlüsse 6 sind als metallische Kontaktfahnen ausgebildet deren erstes Ende jeweils mit dem Stromzuführungsdraht 4 oder 5 verschweißt ist und deren zweites Ende über das steckerartige ausgebildete Kunststoffsockelteil 22 zum Anschließen der Versorgungsspannung der Halogenglühlampe zugänglich ist. Das Verschweißen von Stromzuführungsdrähten 4, 5 und Kontaktfahnen 6 erfolgt mittels Laser über Durchbrüche in der ersten Metallhülse 211, wie es beispielsweise in der WO 2007/096330 A1 beschrieben ist. Das abgedichtete Ende 11 des Lampengefäßes 1 ist als Quetschdichtung ausgebildet. Die Oberfläche des abgedichteten Endes 11 weist mehrere Stege oder Noppen 110 (Figur 2) auf, die mit metallischen Laschen des Halterteils 214 zur Fixierung des Lampengefäßes 1 im Lampensockel 2 zusammenwirken.This halogen bulb has a tempered glass, such as alkali-free Erdalakali alumino-silicate glass, existing translucent 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 the electrical terminals 6 of the halogen incandescent lamp. The gas-tightly sealed lamp vessel 1 has a sealed end 11 which is fixed in a holder part 214 of the metal base part 21, and a hollow, circular cylindrical central vessel portion 12 and a lamp vessel tip 13 which is opposite the sealed end 11 and provided with an opaque coating. The circular-cylindrical lamp vessel section 12 has an outer diameter of 9.5 mm, a wall thickness of 0.9 mm and an inner diameter of 7.7 mm. The length L2 of the circular-cylindrical lamp vessel section 12 measured in the direction of its cylinder axis, that is, the longitudinal extent of the lamp vessel 1 between the sealed end 11 and the lamp vessel tip 13, is approximately 14.2 mm. In the interior of the lamp vessel 1 is a filling gas mixture comprising halogens and noble gas, such as krypton or xenon. The measured at 22 degrees Celsius filling gas pressure is in the range of 1.5 to 1.8 megapascals. Within the lamp vessel 1, in the region of the circular-cylindrical middle lamp vessel section 12, there is a filament 3 designed as a tungsten filament. The winding axis A of the filament 3 is arranged offset parallel to the cylinder axis of the circular-cylindrical lamp vessel section 12. The two ends 31, 32 of the coil 3 are each welded to a power supply wire 4, 5 made of molybdenum. The two power supply wires 4, 5 are from the sealed end 11 led out of the lamp vessel 1 and each connected to one of the two electrical connections 6 of the halogen incandescent lamp. The section of the power supply wire 4 projecting into the circular-cylindrical lamp vessel section 12 extends up to a height of approximately 10.5 mm above the sealed end 11 of the lamp vessel and is thus 29% shorter than halogen incandescent lamps according to the prior art. The section of the other power supply wire 5 projecting into the circular-cylindrical lamp vessel section 12 extends up to a height of approximately 5.2 mm above the sealed end 11 of the lamp vessel and is therefore 37% shorter than halogen incandescent lamps according to the prior art. The two electrical connections 6 are formed as metallic contact lugs whose first end is respectively welded to the power supply wire 4 or 5 and whose second end is accessible via the plug-like formed plastic base part 22 for connecting the supply voltage of the halogen incandescent lamp. The welding of power supply wires 4, 5 and contact lugs 6 by means of laser via openings in the first metal sleeve 211, as for example in the WO 2007/096330 A1 is described. The sealed end 11 of the lamp vessel 1 is formed as a pinch seal. The surface of the sealed end 11 has a plurality of webs or nubs 110 (FIG. FIG. 2 ), which cooperate with metallic tabs of the holder part 214 for fixing the lamp vessel 1 in the lamp base 2.

Der Lampensockel 2 besteht aus einem als Kunststoffspritzgussteil ausgebildeten Kunststoffsockelteil 22, in dem die elektrischen Anschlüsse 6 der Halogenglühlampe eingebettet sind, und einem Metallsockelteil 21, das aus mehreren metallischen Komponenten 211, 212, 213, 214 zusammengesetzt ist.The lamp base 2 consists of a molded plastic injection molded plastic base part 22, in the electrical connections 6 of the halogen incandescent lamp are embedded, and a metal base part 21, which is composed of a plurality of metallic components 211, 212, 213, 214.

Das Kunststoffsockelteil 22 besitzt eine Oberfläche 220, aus der eine erste, hohlzylindrische Metallhülse 211 herausragt. Diese erste hohlzylindrische Metallhülse 211 ist mittels Spritzgusstechnik oder mittels Hochfrequenz-Einschmelztechnik mit dem Kunststoffsockelteil 22 verbunden und bildet eine Komponente des Metallsockelteils 21. Die Mantelfläche der ersten hohlzylindrischen Metallhülse 211 weist einen Durchbruch auf, durch den eine Andruckfeder 215 hindurchragt, die in radialer Richtung der ersten Metallhülse 211 eine Federwirkung besitzt. Auf der vorgenannten Oberfläche 220 des Kunststoffsockelteils 22 liegt ein Dichtungsring 23 aus Silikon auf, der koaxial zur ersten, hohlzylindrischen Metallhülse 211 angeordnet ist. Der Dichtungsring 23 ist geringfügig konisch geformt, das heißt sein Innendurchmesser und sein Außendurchmesser nehmen von seiner auf der Oberfläche 220 aufliegenden Unterseite in Richtung seiner den Referenzlaschen 213a zugewandten Oberseite zu. Dadurch ist der Dichtungsring 23 mit Klemmsitz in einer passgerecht von dem Kunststoffsockelteil 22 geformten Nut fixiert. Das Metallsockelteil 21 besitzt außerdem eine zweite hohlzylindrische Metallhülse 212, die an ihrer, der ersten Metallhülse 211 zugewandten Unterkante einen ringförmigen Kragen 213 mit drei Referenzlaschen 213a aufweist. Der ringförmige Kragen 213 ist mit der ersten Metallhülse 211 verschweißt, so dass die Zylinderachsen der beiden Metallhülsen 211, 212 entweder koaxial oder parallel versetzt angeordnet sind. Die drei Referenzlaschen 213a stehen von der Mantelfläche der zweiten hohlzylindrischen Metallhülse 212 ab, erstrecken sich jeweils in Richtung eines Durchmessers der zweiten Metallhülse 212 und sind äquidistant entlang des Umfangs des ringförmigen Kragens 213 angeordnet. Die dem Dichtungsring 23 zugewandte Unterseite der drei Referenzlaschen 213a definiert eine im wesentlichen senkrecht zur Zylinderachse der Metallhülse 211 und des Lampengefäßabschnitts 12 orientierte Referenzebene R zur Ausrichtung der Halogenglühlampe im Fahrzeugscheinwerfer. Sie entspricht der in der Norm ECE 324 Regel 37 zitierten Referenzebene. Zum Metallsockelteil 21 gehört ferner auch das bereits oben erwähnte, konisch ausgebildete metallische Halterteil 214, das zur Halterung des abgedichteten Endes 11 des Lampengefäßes 1 dient. Die Höhe B des Lampensockels 2 über der Referenzebene R beträgt ca. 13,6 mm.The plastic base part 22 has a surface 220 from which protrudes a first, hollow cylindrical metal sleeve 211. This first hollow cylindrical metal sleeve 211 is connected by means of injection molding technology or by high-frequency melting technique with the plastic base part 22 and forms a component of the metal base part 21. The lateral surface of the first hollow cylindrical metal sleeve 211 has an opening through which a pressure spring 215 protrudes, in the radial direction of the first metal sleeve 211 has a spring action. On the aforementioned surface 220 of the plastic base part 22 is a sealing ring 23 made of silicone, which is arranged coaxially with the first, hollow cylindrical metal sleeve 211. The sealing ring 23 is slightly conically shaped, that is, its inner diameter and its outer diameter increase from its resting on the surface 220 underside in the direction of its reference tabs 213 a facing upper side. As a result, the sealing ring 23 is fixed with a clamping fit in a groove formed by the plastic base part 22 groove. The metal base part 21 also has a second hollow-cylindrical metal sleeve 212, which has an annular collar 213 with three reference tabs 213a on its lower edge facing the first metal sleeve 211. The annular collar 213 is welded to the first metal sleeve 211, so that the cylinder axes of the two metal sleeves 211, 212 either are arranged coaxially or parallel offset. The three reference tabs 213a project from the lateral surface of the second hollow-cylindrical metal sleeve 212, each extending in the direction of a diameter of the second metal sleeve 212 and are arranged equidistantly along the circumference of the annular collar 213. The sealing ring 23 facing bottom of the three reference tabs 213 a defines a substantially perpendicular to the cylinder axis of the metal sleeve 211 and the lamp vessel section 12 oriented reference plane R for alignment of the halogen incandescent lamp in the vehicle headlight. It corresponds to the reference level cited in standard ECE 324, rule 37. The metal base part 21 also includes the already mentioned above, conical metallic holder part 214, which serves to support the sealed end 11 of the lamp vessel 1. The height B of the lamp cap 2 above the reference plane R is about 13.6 mm.

Das Halterteil 214 (Figur 3) ist ebenfalls als Metallhülse ausgebildet und besitzt einen hohlzylindrischen ersten Abschnitt 2141 sowie einen sich daran anschließenden konisch ausgebildeten, insbesondere kegelstumpfartigen hohlen zweiten Abschnitt 2142. Der Außendurchmesser des hohlzylindrischen ersten Halterteilabschnitts 2141 ist geringfügig kleiner als der Innendurchmesser der zweiten Metallhülse 212. Der hohlzylindrische erste Abschnitt 2141 des Halterteils 214 ist in die zweite hohlzylindrische Metallhülse 212 eingesetzt und mit dieser verschweißt. Der kegelstumpfartige zweite Halterteilabschnitt 2142 besitzt an seiner dem Lampengefäß 1 zugewandten Oberseite 2140 einen reduzierten Außendurchmesser, der kleiner als der Außendurchmesser des hohlzylindrischen ersten Abschnitts 2141 des Halterteils 214 ist.The holder part 214 ( FIG. 3 The outer diameter of the hollow cylindrical first holder portion 2141 is slightly smaller than the inner diameter of the second metal sleeve 212. The hollow cylindrical first section 2141 of the holder part 214 is inserted into the second hollow cylindrical metal sleeve 212 and welded thereto. The frustoconical second holder section 2142 has a reduced outer diameter at its upper side 2140 facing the lamp vessel 1, which is smaller than the outer diameter of the hollow cylindrical first portion 2141 of the holder part 214.

Der Außendurchmesser des Halterteils 214 beträgt im Bereich des hohlzylindrischen ersten Halterteilabschnitts 2141 15 mm. Im Bereich des kegelstumpfartigen zweiten Halterteilabschnitts 2142 beträgt der Außendurchmesser des Halterteils 214 an der dem Lampengefäß zugewandten Oberseite 2140 nur noch 12 mm. Die Höhe des konisch ausgebildeten zweiten Halterteilabschnitts 2142 beträgt 3,5 mm und die Höhe des hohlzylindrischen ersten Halterteilabschnitts 2141 beträgt 6 mm.The outer diameter of the holder part 214 is 15 mm in the region of the hollow cylindrical first holder part 2141. In the region of the frustoconical second holder section 2142, the outer diameter of the holder part 214 on the upper side facing the lamp vessel 2140 is only 12 mm. The height of the conical second holder portion 2142 is 3.5 mm and the height of the hollow cylindrical first holder portion 2141 is 6 mm.

Die Oberseite 2140 des Halterteils 214 weist einen Durchbruch 2143 zur Aufnahme des abgedichteten Endes 11 des Lampengefäßes 1 und acht Federlaschen 2144 auf, die mit Klemmsitz an dem abgedichteten Ende 11 des Lampengefäßes 1 anliegen. Die Federlaschen 2144 wirken dabei mit den Stegen bzw. Noppen 110 auf der Oberfläche des abgedichteten Endes 11 des Lampengefäßes 1 zusammen, die ihnen als Anschlag oder Führung dienen. Jeweils vier Federlaschen 2144 liegen an den beiden gegenüberliegenden Seiten des abgedichteten Endes 11 des Lampengefäßes 1 an, so dass das abgedichtete Ende 11 mit Klemmsitz zwischen den Federlaschen 2144 fixiert ist. Eine detaillierte Beschreibung dieses Klemmsitzes ist beispielsweise in der WO 96/05610 A1 offenbart.The upper side 2140 of the holder part 214 has an opening 2143 for receiving the sealed end 11 of the lamp vessel 1 and eight spring tabs 2144 which abut against the sealed end 11 of the lamp vessel 1 with a clamping fit. The spring tabs 2144 cooperate with the webs or nubs 110 on the surface of the sealed end 11 of the lamp vessel 1 together, which serve them as a stop or guide. Each four spring tabs 2144 abut against the two opposite sides of the sealed end 11 of the lamp vessel 1, so that the sealed end 11 is fixed with a clamping fit between the spring tabs 2144. A detailed description of this clamping seat is for example in the WO 96/05610 A1 disclosed.

Nach der Montage der Halogenglühlampe ragen das Lampengefäß 1 und das Metallsockelteil in das Innere des Scheinwerfers hinein, so dass die vom Lampengefäß abgewandte Unterseite der Referenzlaschen 213a an der Innenseite des Scheinwerferreflektors (nicht abgebildet) und der Dichtungsring 23 an der Außenseite des Scheinwerferreflektors anliegt. Das heißt, die Wand des Scheinwerferreflektors ist mit Klemmsitz zwischen den Referenzlaschen 213a und dem Dichtungsring 23 angeordnet. Die Andruckfeder 215 liegt federnd an dem Rand der Reflektoröffnung an und bewirkt dadurch eine Arretierung der Halogenglühlampe senkrecht zur Zylinderachse der ersten Metallhülse 211. Details dieser Form der Arretierung sind beispielsweise in der WO 97/25733 A1 offenbart.After mounting the halogen incandescent lamp, the lamp vessel 1 and the metal base part protrude into the interior of the headlamp, so that the underside of the reference lugs 213a facing away from the lamp vessel on the inside of the lamp Headlamp reflector (not shown) and the sealing ring 23 rests on the outside of the headlamp reflector. That is, the wall of the headlamp reflector is disposed with a press fit between the reference tabs 213 a and the seal ring 23. The pressure spring 215 is resiliently against the edge of the reflector opening and thereby causes a locking of the halogen incandescent lamp perpendicular to the cylinder axis of the first metal sleeve 211st Details of this form of locking are, for example, in the WO 97/25733 A1 disclosed.

Gemäß dem zweiten Ausführungsbeispiel der Erfindung wird bei der in Figur 1 dargestellten Halogenglühlampe anstelle des in der Figur 3 abgebildeten Halterteils 214 das in Figur 5 abgebildete Halterteil 214' verwendet. In allen anderen Details stimmen die Halogenglühlampen gemäß dem ersten und zweiten Ausführungsbeispiel der Erfindung überein.According to the second embodiment of the invention is in the in FIG. 1 shown halogen bulb instead of in the FIG. 3 shown holder part 214 in FIG. 5 shown holder part 214 'used. In all other details, the halogen incandescent lamps according to the first and second embodiments of the invention agree.

Das Halterteil 214' (Figur 5) ist ebenfalls als Metallhülse ausgebildet und besitzt einen hohlzylindrischen ersten Abschnitt 2141' sowie einen sich daran anschließenden hohlzylindrischen zweiten Abschnitt 2142'. Der Außendurchmesser des hohlzylindrischen ersten Halterteilabschnitts 2141' ist geringfügig kleiner als der Innendurchmesser der zweiten Metallhülse 212. Der hohlzylindrische erste Abschnitt 2141' des Halterteils 214' ist in die zweite hohlzylindrische Metallhülse 212 eingesetzt und mit dieser verschweißt. Der hohlzylindrische zweite Halterteilabschnitt 2142' besitzt einen reduzierten Außendurchmesser, der kleiner als der Außendurchmesser des hohlzylindrischen ersten Abschnitts 2141' des Halterteils 214' ist.The holder part 214 '( FIG. 5 ) is also formed as a metal sleeve and has a hollow cylindrical first portion 2141 'and an adjoining hollow cylindrical second portion 2142'. The outer diameter of the hollow cylindrical first holder portion 2141 'is slightly smaller than the inner diameter of the second metal sleeve 212. The hollow cylindrical first portion 2141' of the holder portion 214 'is inserted into the second hollow cylindrical metal sleeve 212 and welded thereto. The hollow cylindrical second holder portion 2142 'has a reduced outer diameter smaller than the outer diameter of the hollow cylindrical first portion 2141 'of the holder part 214' is.

Der Außendurchmesser des Halterteils 214' beträgt im Bereich des hohlzylindrischen ersten Halterteilabschnitts 2141' 15 mm. Im Bereich des hohlzylindrischen zweiten Halterteilabschnitts 2142' beträgt der Außendurchmesser des Halterteils 214' nur noch 12 mm. Die Höhe des zweiten Halterteilabschnitts 2142' beträgt 3,5 mm und die Höhe des hohlzylindrischen ersten Halterteilabschnitts 2141' beträgt 6 mm.The outer diameter of the holder part 214 'is 15 mm in the area of the hollow cylindrical first holder part 2141'. In the area of the hollow-cylindrical second holder portion 2142 ', the outer diameter of the holder part 214' is only 12 mm. The height of the second holder portion 2142 'is 3.5 mm, and the height of the hollow cylindrical first holder portion 2141' is 6 mm.

Die Oberseite 2140' und die Federlaschen des Halterteils 214' gemäß dem zweiten Ausführungsbeispiel der Erfindung sind genauso ausgebildet wie das Oberteil 2140 und die Federlaschen 2144 des Halterteils 214 gemäß dem ersten Ausführungsbeispiel der Erfindung.The upper side 2140 'and the spring tabs of the holder part 214' according to the second embodiment of the invention are designed in the same way as the upper part 2140 and the spring tabs 2144 of the holder part 214 according to the first embodiment of the invention.

Die Erfindung beschränkt sich nicht auf die oben näher beschriebenen Ausführungsbeispiele. Insbesondere kann die Erfindung auch auf Halogenglühlampen anderer Kategorien der ECE-Regel 37 angewandt werden.The invention is not limited to the embodiments described in detail above. In particular, the invention can also be applied to halogen incandescent lamps of other categories of ECE Rule 37.

Claims (7)

  1. Halogen incandescent lamp for vehicle headlamps with a lamp base (2), which defines a reference plane (R) for the alignment of the halogen incandescent lamp in the vehicle headlamp and which comprises a holder part (214, 214') with a substantially rotationally symmetrical outer contour for holding a transparent lamp vessel (1), wherein the holder part (214, 214') has a first holder part section (2141, 2141'), which is connected to a component part (212) of the lamp base (2), and a second holder part section (2142, 2142'), out of which the transparent lamp vessel (1) protrudes, wherein the second holder part section (2142, 2142') has a smaller outer diameter than the first holder part section (2141, 2141'), and wherein the lamp vessel (1) has a cylindrical lamp vessel section (12), which surrounds at least one incandescent filament (3) and which is sealed at one end by a lamp vessel seal (11), out of which power supply lines (4, 5) for the at least one incandescent filament (3) are passed, and at the other end by a lamp vessel dome (13), characterized in that the height (B) of the lamp base (2) above the reference plane (R) is in the range of from 11.5 mm to 16.6 mm, and the length of the cylindrical lamp vessel section (12) is less than or equal to 18 mm.
  2. Halogen incandescent lamp according to Claim 1, wherein the height (B) of the lamp base (2) above the reference plane (R) is in the range of from 12 mm to 16.6 mm, and preferably in the range of from 13 mm to 16 mm.
  3. Halogen incandescent lamp according to Claim 1 or 2, wherein the first holder part section (2141') and the second holder part section (2142') are each cylindrical or in the form of a truncated cone.
  4. Halogen incandescent lamp according to Claim 1 or 2, wherein the first holder part section (2141) or the second holder part section (2142) is cylindrical and the other holder part section (2141, 2142) is in the form of a truncated cone.
  5. Halogen incandescent lamp according to one of Claims 1 to 4, wherein the outer diameter of the cylindrical lamp vessel section (12) is in the range of from 9 mm to 10 mm.
  6. Halogen incandescent lamp according to one of Claims 1 to 5, wherein the lamp vessel (1) consists of hard glass.
  7. Halogen incandescent lamp according to one of Claims 1 to 6, wherein the distance between the at least one incandescent filament (3) and the reference plane is in the range of 25.0 mm ± 0.1 mm.
EP11706520.1A 2010-03-08 2011-02-23 Halogen incandescent lamp for a vehicle headlight Not-in-force EP2510537B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010002650A DE102010002650B4 (en) 2010-03-08 2010-03-08 Halogen bulb for vehicle headlights
PCT/EP2011/052668 WO2011110425A1 (en) 2010-03-08 2011-02-23 Halogen incandescent lamp for a vehicle headlight

Publications (2)

Publication Number Publication Date
EP2510537A1 EP2510537A1 (en) 2012-10-17
EP2510537B1 true EP2510537B1 (en) 2013-10-30

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EP11706520.1A Not-in-force EP2510537B1 (en) 2010-03-08 2011-02-23 Halogen incandescent lamp for a vehicle headlight

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US (1) US8796924B2 (en)
EP (1) EP2510537B1 (en)
JP (1) JP5599477B2 (en)
CN (1) CN102792418B (en)
DE (1) DE102010002650B4 (en)
ES (1) ES2441383T3 (en)
WO (1) WO2011110425A1 (en)

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Publication number Priority date Publication date Assignee Title
CN102592959B (en) * 2012-03-09 2014-02-26 文德彪 Energy-saving halogen lamp convenient to mount and dismount
CN107481916A (en) * 2017-08-02 2017-12-15 常熟林芝电子技术有限公司 The Halogen lamp LED of automobile using
CN107393806A (en) * 2017-08-02 2017-11-24 常熟林芝电子技术有限公司 Automobile-used Halogen lamp LED

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JPS58147154U (en) * 1982-03-29 1983-10-03 松下電子工業株式会社 incandescent light bulb for vehicle
US4769574A (en) * 1986-08-04 1988-09-06 Koito Seisakusho Co., Ltd. Incandescent lamp with a metal coupling to a plastic lamp base for automotive headlamp and like lighting applications
DE8902247U1 (en) * 1989-02-24 1989-04-06 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 81543 München Puttyless base electric lamp
DE8907108U1 (en) * 1989-06-09 1989-08-10 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 81543 München Puttyless base electric lamp
EP0384240B1 (en) 1989-02-24 1994-04-20 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Electrical lamp capped without cement
DE9017224U1 (en) * 1990-12-20 1991-03-07 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Puttyless base electric lamp
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DE202006002886U1 (en) 2006-02-21 2006-05-04 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH lamp

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US8796924B2 (en) 2014-08-05
JP5599477B2 (en) 2014-10-01
CN102792418B (en) 2015-10-07
DE102010002650A1 (en) 2011-09-08
ES2441383T3 (en) 2014-02-04
US20140184060A1 (en) 2014-07-03
JP2013521623A (en) 2013-06-10
WO2011110425A1 (en) 2011-09-15
EP2510537A1 (en) 2012-10-17
CN102792418A (en) 2012-11-21
DE102010002650B4 (en) 2012-11-22

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