EP1363315B1 - Lampe à incandescence pour projecteur de véhicule automobile - Google Patents

Lampe à incandescence pour projecteur de véhicule automobile Download PDF

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Publication number
EP1363315B1
EP1363315B1 EP03009969A EP03009969A EP1363315B1 EP 1363315 B1 EP1363315 B1 EP 1363315B1 EP 03009969 A EP03009969 A EP 03009969A EP 03009969 A EP03009969 A EP 03009969A EP 1363315 B1 EP1363315 B1 EP 1363315B1
Authority
EP
European Patent Office
Prior art keywords
filament
shading device
incandescent
coil
lamp
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03009969A
Other languages
German (de)
English (en)
Other versions
EP1363315A3 (fr
EP1363315A2 (fr
Inventor
Gerhard Behr
Manfred Bühler
Christian Seichter
Klaus Wittman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Publication of EP1363315A2 publication Critical patent/EP1363315A2/fr
Publication of EP1363315A3 publication Critical patent/EP1363315A3/fr
Application granted granted Critical
Publication of EP1363315B1 publication Critical patent/EP1363315B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/26—Screens; Filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K9/00—Lamps having two or more incandescent bodies separately heated
    • H01K9/08—Lamps having two or more incandescent bodies separately heated to provide selectively different light effects, e.g. for automobile headlamp

Definitions

  • the invention relates to an incandescent lamp for motor vehicle headlights according to the preamble of patent claim 1.
  • Such a light bulb is for example in the international patent application with the publication number WO 98/38670 disclosed.
  • This publication describes an incandescent lamp with a secondary filament for generating the low beam and a main filament for generating the high beam in a motor vehicle headlight.
  • the incandescent lamp also has a shading device arranged in the lamp vessel, which shields a part of the light generated by the auxiliary filament and is used to generate the bright-dark boundary of the low beam.
  • a spiral outlet of the secondary spiral is designed as an end which is angled parallel to the spiral axis and which is welded to the shading device.
  • the EP 0 817 243 A2 discloses a motor vehicle headlight incandescent lamp with a dimming cap and a Abbleriumtglühwendel having a connected to a substantially parallel to the helical axis of the Abblertztglühwendel extending edge portion of the dimming cap coil outlet.
  • the light bulb for motor vehicle headlights has a lamp vessel and at least one arranged therein filament and a arranged inside the lamp vessel shading device, wherein the shading device an edge having at least one, substantially parallel to the helical axis of the at least one filament extending edge portion and the at least one filament has a Wendelabgang which is connected to this edge portion of the shading device.
  • This arrangement of the spiral outlet ensures that the spiral outlet for connection to the shading device does not have to be angled. Accordingly, the manufacture and assembly of the filament simplify.
  • the shading device is advantageously equipped with a tab which is integrally formed on the at least one, substantially parallel to the helical axis of the at least one filament extending edge portion and extending transversely to this edge portion , This tab is ideal for making a welded joint with the coil outlet.
  • the spiral outlet is advantageously covered with a metal foil. It allows attachment of the at least one filament to the shading device without causing undesirable torsion or deformation of the filament and prevents embrittlement of the filament outlet when welding to the shading device.
  • the metal foil is preferably made of a refractory metal such as molybdenum, tantalum, tungsten or an alloy of the foregoing metals to withstand the high temperature during lamp operation and to ensure good bonding between the molybdenum or molybdenum alloy shielding device.
  • a refractory metal such as molybdenum, tantalum, tungsten or an alloy of the foregoing metals to withstand the high temperature during lamp operation and to ensure good bonding between the molybdenum or molybdenum alloy shielding device.
  • the two filament outlets of the at least one incandescent filament are arranged such that the portions of the filament outlets illuminating during lamp operation, ie those portions of the filament outlets which directly adjoin the first or last turn of the part of the filament serving for generating light, are connected to the filament part of the filament surface remote from the shading device.
  • these luminous sections of the spiral outlets do not become that of the shading device facing region of the filament surface, whose projection or its image is used to generate the bright-dark boundary. Therefore, neither the filament outlets themselves nor their mirror images generated by the lamp vessel can interfere with the formation of a sharp bright-dark border in the headlight.
  • FIG. 1 preferred embodiment of the invention is a two-filament halogen incandescent lamp, which is intended for use in a motor vehicle headlight.
  • This lamp has a glassy, substantially cylindrical lamp vessel 1 with two included filaments 2, 3, one of which is aligned axially and the other transversely to the longitudinal axis A of the lamp cap.
  • the axially aligned incandescent filament 2 is partially surrounded by a shading device 4 which is likewise arranged inside the lamp vessel 1.
  • For holding and power supply of the filaments 2, 3 and the shading device 4 are three power supply lines 5, 6 and 7, which are led out of the socket near end of the lamp vessel 1.
  • the sockelnahe End of the lamp vessel 1 is anchored with a press fit in a recess of a metallic holder 8, which in turn is part of the lamp cap 9.
  • the metallic holder 8 is fixed in the metallic adjusting ring 10, which is welded to the reference ring 11.
  • the reference ring 11 has three reference lugs 11a, 11b, which extend radially outwards, essentially perpendicular to the longitudinal axis A and lie in a common plane.
  • the reference ring 11 is welded to the metallic, annular base flange 12, the flange plane is arranged substantially perpendicular to the longitudinal axis A.
  • the base flange 12 has three evenly arranged along its circumference ring, resiliently formed tabs 12a, 12b, which develop a spring action in the longitudinal direction A of the lamp. As an abutment to the spring tabs serve the reference lugs 11a, 11b.
  • a pressure spring 19 For lateral support of the lamp at the edge of the headlight reflector opening is a pressure spring 19 which projects through an opening in the annular collar 12d of the base flange 12 to the outside.
  • the plastic ring 13 connects, from the three metallic contact lugs 13a, 13b protrude, which are each electrically connected to a power supply 5, 6, 7 and form the electrical contacts of the headlamp.
  • the three contact lugs 13a, 13b and in particular also their contact surfaces are arranged in a common plane perpendicular to the axis of the plastic ring 13 and thus also substantially perpendicular to the longitudinal axis A.
  • the remote from the lamp vessel 1 end of the lamp cap 9 is formed by the plastic grip part 14 which is fixed by a non-detachable plug connection to the plastic ring 13 and the base flange 12.
  • the handle part 14 has a perpendicular to the longitudinal axis A, along a diameter of the plastic ring 13 extending web 14a.
  • the web 14a can serve as a handle for locking and unlocking the bayonet lock when changing the lamp.
  • FIGS 2 and 3 show details of the shading device 4 and the filament used to generate the low beam 2.
  • This filament 2 the Also referred to as secondary coil 2
  • Both spiral outlets 2a, 2b are each encapsulated by a molybdenum foil 20, 21, which serve as a welding aid for connecting the spiral outlets 2a and 2b to the shading device 4 or to the power supply 5.
  • the shading device 4 has two mutually opposite edge portions 41, 42 which extend substantially parallel to the helical axis of the secondary helix 2.
  • the shading device 4 is provided with a tab 43, which is integrally formed on the edge portion 41 and extends transversely to this edge portion 41 to the outside, so that the free end of the tab 43 is directed away from the secondary spiral 2.
  • the tab 43 is angled from the edge portion 41.
  • the spiral outlet 2 a covered by the molybdenum foil 20 is welded to the tab 43. In a plane perpendicular to the helical axis of the secondary helix 2, the two helical outlets 2a, 2b together form an angle ⁇ of 115 degrees.
  • the free end of the tab 43 may also point in the direction of the secondary spiral 2.
  • the spiral outlets 2a, 2b may be formed as uncoiled ends of the secondary spiral 2, as shown in FIGS. 2 and 3, or alternatively as coiled ends of the secondary spiral 2.
  • the filament outlets 2a, 2b are uncoiled and in the case of a double-wound incandescent filament 2, the filament outlets 2a, 2b are simply coiled.
  • Figure 4 shows a second embodiment of the invention in which the free end of the tab 43 'extends in the direction of the secondary helix 2 and thus points in the opposite direction as the tab 43 of the first embodiment.
  • the second is consistent with the first embodiment.
  • the tab 43 ' is integrally formed on the edge portion 41, and the coil end 2a wrapped by the molybdenum foil 20 is welded to the tab 43'. Therefore, the same reference numerals have been used in Figures 3 and 4 for identical parts.
  • the coil outlet 2a to the shading device by means of a hook-shaped or U-shaped tab (not shown) formed on the shading device 4 and having a gap for supporting the coil outlet 2a, the gap width being so dimensioned is that the helical departure 2a is arranged with a press fit in the gap.
  • the helical departure 2a may be connected to the tab by a weld in order to achieve the lowest possible contact resistance between the helical departure 2a and the tab.
  • the U-legs of the tab can be connected to each other by a weld to ensure a permanent press fit of the helical departure 2a in the gap. In this type of connection, if necessary, the wrapping of the helical departure 2a with a molybdenum foil 20 may also be dispensed with.

Landscapes

  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Claims (4)

  1. Lampe à incandescence pour projecteur de véhicule automobile, qui a une enceinte (1) de lampe et au moins un filament (2) incandescent qui y est disposé, ainsi qu'un dispositif (4) de diaphragmation disposé à l'intérieur de l'enceinte (1) de lampe, le dispositif (4) de diaphragmation comportant un bord ayant au moins une partie (41) s'étendant sensiblement parallèlement à l'axe du au moins un filament (2) incandescent, et le au moins un filament (2) incandescent a une première sortie (2a) de filament qui est reliée à la partie (41) de bord mentionnée ci-dessus, ainsi qu'une deuxième sortie (2) de filament, caractérisée en ce que, dans un plan perpendiculaire à l'axe de ce filament (2) incandescent, la première sortie (2a) de filament fait avec la deuxième sortie (2b) de filament un angle α supérieur ou égal à 115° et plus petit que 130°.
  2. Lampe à incandescence suivant la revendication 1, caractérisée en ce que le dispositif (4) de diaphragmation a un collier (43, 43') qui est formé sur la au moins une partie (41) de bord s'étendant sensiblement parallèlement à l'axe du au moins un filament (4) incandescent et qui s'étend transversalement à cette partie (41) de bord, la sortie (2a) du filament étant fixée au collier (43, 43') par un joint soudé.
  3. Lampe à incandescence suivant la revendication 1 ou 2, caractérisée en ce que la sortie (2a) du filament est entourée d'une feuille (20) métallique.
  4. Lampe à incandescence suivant la revendication 3, caractérisée en ce que la feuille (20) métallique est en molybdène, en tantale, en tungstène ou en un alliage de ces métaux et le dispositif (4) de diaphragmation est en molybdène ou en un alliage de molybdène.
EP03009969A 2002-05-02 2003-04-30 Lampe à incandescence pour projecteur de véhicule automobile Expired - Lifetime EP1363315B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10219729A DE10219729A1 (de) 2002-05-02 2002-05-02 Glühlampe für Kraftfahrzeugscheinwerfer
DE10219729 2002-05-02

Publications (3)

Publication Number Publication Date
EP1363315A2 EP1363315A2 (fr) 2003-11-19
EP1363315A3 EP1363315A3 (fr) 2005-11-16
EP1363315B1 true EP1363315B1 (fr) 2007-12-12

Family

ID=29224999

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03009969A Expired - Lifetime EP1363315B1 (fr) 2002-05-02 2003-04-30 Lampe à incandescence pour projecteur de véhicule automobile

Country Status (7)

Country Link
US (1) US6879102B2 (fr)
EP (1) EP1363315B1 (fr)
JP (1) JP2003346736A (fr)
KR (1) KR20030086419A (fr)
AT (1) ATE381113T1 (fr)
CA (1) CA2427422A1 (fr)
DE (2) DE10219729A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10306178A1 (de) * 2003-02-13 2004-08-26 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Glühlampe für Fahrzeugscheinwerfer
EP1560258A3 (fr) * 2003-12-12 2008-01-23 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe à incandescence pour phare de véhicule
AT8564U1 (de) * 2005-06-29 2006-09-15 Plansee Se Halogenglühlampe mit abblendkappe aus mo-legierung
US20070108882A1 (en) * 2005-11-16 2007-05-17 Schneider Jerome J Jr Incandescent lamp including self sealing mount base
DE102006060025A1 (de) * 2006-12-19 2008-06-26 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Schweißhilfe für eine Glühwendel
DE202008014004U1 (de) 2008-10-21 2009-12-03 Osram Gesellschaft mit beschränkter Haftung Halogenglühlampe
WO2010151709A1 (fr) * 2009-06-24 2010-12-29 Cunningham David W Système d'éclairage incandescent qui intègre un protecteur de contact réfléchissant dans l'infrarouge
US9966246B2 (en) * 2013-05-13 2018-05-08 Koninklijke Philips N.V. Double-filament incandescent lamp for automotive vehicle front lighting
CN103337448A (zh) * 2013-07-01 2013-10-02 江苏晨阳电光源有限公司 道路机动车辆前照灯尺寸定位的生产工艺

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733377A (en) * 1951-10-06 1956-01-31 Incandescent lamp comprising two
GB1313531A (en) * 1970-04-16 1973-04-11 Thorn Electrical Ind Ltd Incandescent lamp manufacture
DE8121528U1 (de) * 1981-07-22 1982-11-18 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Zweifaden-halogengluehlampe fuer kraftfahrzeugscheinwerfer
FR2568721B1 (fr) * 1984-08-03 1986-12-05 Lampes Elect Fab Reunies Lampe electrique a incandescence pour vehicule automobile
DE3616673A1 (de) * 1986-05-16 1987-11-19 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Halogengluehlampe
JP3047209B2 (ja) * 1995-03-16 2000-05-29 株式会社小糸製作所 電球のフィラメント支持構造及びフィラメントの支持体への固定方法
JPH08264162A (ja) * 1995-03-22 1996-10-11 Koito Mfg Co Ltd 白熱電球及びその製造方法
DE19544012A1 (de) * 1995-11-27 1997-05-28 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Elektrische Glühlampe mit Abblendkappe und Verfahren zur Herstellung einer derartigen Lampe sowie Abblendkappe für eine elektrische Glühlampe
DE69723365T2 (de) * 1996-06-04 2004-02-12 Honda Giken Kogyo K.K. Lampenbirne für Fahrzeuge
JP3771322B2 (ja) * 1996-06-04 2006-04-26 本田技研工業株式会社 自動車用電球
JP4057090B2 (ja) * 1996-06-06 2008-03-05 本田技研工業株式会社 車両用電球
DE19707245A1 (de) * 1997-02-25 1998-08-27 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Verfahren zur Herstellung einer elektrischen Glühlampe
JP2001006626A (ja) * 1999-06-22 2001-01-12 Koito Mfg Co Ltd 電球バルブ及び電球バルブのコーティング方法
DE10145427A1 (de) * 2001-09-14 2003-04-03 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Glühlampe für Kraftfahrzeugscheinwerfer

Also Published As

Publication number Publication date
CA2427422A1 (fr) 2003-11-02
JP2003346736A (ja) 2003-12-05
EP1363315A3 (fr) 2005-11-16
DE10219729A1 (de) 2003-11-13
EP1363315A2 (fr) 2003-11-19
KR20030086419A (ko) 2003-11-10
US20030205972A1 (en) 2003-11-06
DE50308757D1 (de) 2008-01-24
US6879102B2 (en) 2005-04-12
ATE381113T1 (de) 2007-12-15

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