EP1447837A2 - Lampe à incandescence pour phare de véhicule - Google Patents

Lampe à incandescence pour phare de véhicule Download PDF

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Publication number
EP1447837A2
EP1447837A2 EP04001464A EP04001464A EP1447837A2 EP 1447837 A2 EP1447837 A2 EP 1447837A2 EP 04001464 A EP04001464 A EP 04001464A EP 04001464 A EP04001464 A EP 04001464A EP 1447837 A2 EP1447837 A2 EP 1447837A2
Authority
EP
European Patent Office
Prior art keywords
filament
power supply
incandescent
incandescent lamp
shading device
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.)
Withdrawn
Application number
EP04001464A
Other languages
German (de)
English (en)
Other versions
EP1447837A3 (fr
Inventor
Christian Seichter
Klaus Wittmann
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 EP1447837A2 publication Critical patent/EP1447837A2/fr
Publication of EP1447837A3 publication Critical patent/EP1447837A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/02—Incandescent bodies
    • H01K1/14—Incandescent bodies characterised by the shape
    • 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
    • H01K1/00—Details
    • H01K1/02—Incandescent bodies
    • H01K1/16—Electric connection thereto
    • 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 a light bulb for vehicle headlights according to the preamble of claim 1.
  • a light bulb for vehicle headlights according to the preamble of claim 1.
  • it is a two-filament halogen lamp for motor vehicle headlights.
  • Such an incandescent lamp is described, for example, in patent application DE 195 44 012 disclosed.
  • This patent application describes a two-filament halogen lamp for a motor vehicle headlight with two filaments and a shading device, which are arranged in the lamp vessel.
  • One of the filaments that as Secondary coil is usually used to generate the low beam while the other filament, called the main filament, is usually serves to generate the high beam.
  • the secondary helix is close to the shading device arranged so that their light from the shading device is partially shadowed.
  • a spiral exit of the secondary spiral is through a Breakthrough in the shading device threaded and with a power supply wire welded. The breakthrough can lead to an undesirable increase of the scattered light component.
  • the incandescent lamp according to the invention has at least one filament and a shading device for the at least one filament that is in a lamp vessel are arranged, and power supplies for the at least one filament, wherein a first power supply is connected to the shading device and the first power supply has an angled end with a spiral outlet the at least one filament is connected.
  • this is angled End of the first power supply is advantageously hook-shaped.
  • the shading device extends between the legs of the hook-shaped end of the first power supply. This allows the first power supply for fastening the shading device as well as for spiral suspension be used.
  • Between one leg of the hook-shaped End of the first power supply and a filament outlet of the incandescent filament preferably a welded joint. The aforementioned leg is advantageous bent back towards the incandescent filament for a short filament exit to enable.
  • the angled end or the aforementioned Leg of the first power supply a smaller distance from that of the at least has a filament facing surface of the shading device as the section of the at least one incandescent filament responsible for the light emission, to an impairment of the cut-off line by the hook-shaped To prevent end scattered light.
  • the one with the angled above End of the power supply connected spiral outlet of the at least one filament is advantageously encased in a metal foil made of molybdenum or tantalum, to ensure a good weld connection.
  • the made of molybdenum or Tantalum existing metal foil can be better with that made of molybdenum Power supply wire is welded as the filament outlet made of tungsten the filament.
  • the preferred exemplary embodiments of the invention are two-filament halogen incandescent lamps, intended for use in motor vehicle headlights are. These lamps have two filaments 4, 5 and a shader 6, the in a substantially cylindrical lamp vessel 1 made of tempered glass or quartz glass are included.
  • the first filament 4, also referred to as a secondary filament is used to generate the low beam and is arranged close to the shader 6, which partially shades the light emitted by the secondary helix 4.
  • the second filament 5, which is also referred to as the main filament, is used for generation of the high beam.
  • the lamp vessel 1 has a sealed end 1a, which in the Lamp base 2 is fixed.
  • the lamp base 2 has three contact lugs 3 which each via a power supply 7, 8, 9 with the filaments 4, 5 electrically conductive are connected.
  • the power supplies 7, 8, 9 are gas-tight in the sealed End 1a of the lamp vessel 1 embedded.
  • the quartz glass bar 10 is used for fixation the power supply wires 7, 8, 9 during the assembly of the lamp frame 4, 5, 6, 7, 8, 9. Details of the filament suspension are shown in FIGS. 1 and 2.
  • the filament suspension according to the first embodiment is Invention shown.
  • the first spiral outlet 41 of the secondary spiral 4 is with a Molybdenum foil wraps 11 with the hook-shaped end 81 of the power supply wire 8 is welded.
  • the hook-shaped end 81 is approximately U-shaped designed.
  • the shader 6 extends between the two legs 811, 812 of the hook-shaped end 81 of the power supply 8.
  • the distance between the U-leg 811 and the surface of the shaker facing the incandescent filament 4 6 is smaller than the distance between the coiled, responsible for the light emission Area 43 of the secondary helix 4 and the aforementioned surface of the Shader 6.
  • the surface of the shader 6 facing away from the secondary helix 4 is welded to the power supply wire 8.
  • the second spiral outlet 42 of the Secondary coil 4 is surrounded by a molybdenum foil 11 and with the power supply 9 welded.
  • the first spiral outlet 51 of the main spiral 5 is with a molybdenum foil 11 wrapped and welded to the power supply 8 while you second spiral outlet 52, also wrapped in a molybdenum foil 11 the power supply 7 is welded.
  • FIGS. 1 and 2 are the filament suspension according to the second embodiment presented the invention.
  • This filament suspension differs from that of the first embodiment only by the shape of the power supply 8 or 8 '. Therefore, the same reference numerals have been used in FIGS. 1 and 2 for identical lamp parts used.
  • the first spiral outlet 41 of the secondary spiral 4 is with a molybdenum foil 11 envelops that with the angled end 81 'of the power supply 8' is welded.
  • the second spiral outlet 42 of the secondary spiral 4 is with a molybdenum foil 11 wrapped and welded to the power supply wire 9.
  • the Distance between the end of the angled section 81 'and that of the secondary helix 4 facing surface of the shader 6 is smaller than the distance between the coiled area 43 of the secondary helix, which is responsible for the light emission 4 and the aforementioned surface of the shader 6. In this way the scattered at the end of the angled portion 81 'is prevented Light interferes with the formation of a sharp cut-off line.
  • the cut-off line for the low beam is by the contour of the secondary filament 4, in particular by the projection of the surface of the secondary helix 4 facing the shader 6 Are defined.
  • the surface of the shader 6 facing away from the secondary helix 4 is welded to the power supply wire 8 '.
  • the first spiral outlet 51 of the Main coil 5 is wrapped with a molybdenum foil 11 and with the power supply 8 'welded, while its second, also from a molybdenum foil 11 wrapped spiral outlet 52 is welded to the power supply 7.
  • the invention is not limited to the exemplary embodiments explained in more detail above.
  • the two incandescent filaments 4, 5 do not necessarily have to be simply coiled have light-emitting sections 43 and uncoiled spiral outlets, but can instead use double-coiled light-emitting sections and have single-spiral spiral outlets. You can also click on the Molybdenum foils 11 are dispensed with.
  • the molybdenum foils 11 only serve as Welding aid, since this is better with the power supply wires, which are also made of Molbydene 7, 8, 9 are weldable than the spiral outlets made of tungsten the filaments 4, 5.

Landscapes

  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Resistance Heating (AREA)
EP04001464A 2003-02-13 2004-01-23 Lampe à incandescence pour phare de véhicule Withdrawn EP1447837A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10306178A DE10306178A1 (de) 2003-02-13 2003-02-13 Glühlampe für Fahrzeugscheinwerfer
DE10306178 2003-02-13

Publications (2)

Publication Number Publication Date
EP1447837A2 true EP1447837A2 (fr) 2004-08-18
EP1447837A3 EP1447837A3 (fr) 2008-01-09

Family

ID=32668063

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04001464A Withdrawn EP1447837A3 (fr) 2003-02-13 2004-01-23 Lampe à incandescence pour phare de véhicule

Country Status (5)

Country Link
US (1) US20040160181A1 (fr)
EP (1) EP1447837A3 (fr)
JP (1) JP2004247303A (fr)
KR (1) KR20040073384A (fr)
DE (1) DE10306178A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1560258A3 (fr) * 2003-12-12 2008-01-23 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe à incandescence pour phare de véhicule
DE102004041113A1 (de) * 2004-08-24 2006-03-02 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Elektrische Glühlampe
DE102008038561A1 (de) 2008-08-20 2010-02-25 Osram Gesellschaft mit beschränkter Haftung Halogenglühlampe
KR200452390Y1 (ko) * 2010-08-13 2011-02-28 에스에스라이팅 주식회사 진동 내구성이 강화된 자동차용 할로겐 전조등

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1590164A (en) * 1920-05-26 1926-06-22 Westinghouse Lamp Co Mount for incandescent-lamp filaments
GB1313532A (en) * 1970-04-16 1973-04-11 Thron Electrical Ind Ltd Incandescent lamps
US3774064A (en) * 1970-04-16 1973-11-20 Thorn Electrical Ind Ltd Incandescent lamp filament supports
US3801178A (en) * 1970-04-07 1974-04-02 Philips Corp Method of providing support for conductors of an electric filament or discharge lamp
DD224445A1 (de) * 1984-06-07 1985-07-03 Narva Gluehlampen Halogengluehlampe mit einer im lampengestell angeordneten abblendkappe
US4529908A (en) * 1981-10-16 1985-07-16 U.S. Philips Corporation Electric incandescent lamp for a motor-car
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
EP0812004A2 (fr) * 1996-06-04 1997-12-10 Honda Giken Kogyo Kabushiki Kaisha Ampoule de lampe pour véhicule

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2837280A1 (de) * 1978-08-25 1980-03-06 Patra Patent Treuhand Elektrische lampe mit lichtabdeckendem ueberzug
US5578893A (en) * 1993-11-16 1996-11-26 Piaa Corporation Bulb for vehicular lighting equipment
WO1998049717A1 (fr) * 1997-04-28 1998-11-05 Osram Sylvania Inc. Lampe pour vehicule a filament ameliore et a configurations de support de filament ameliorees
DE10145427A1 (de) * 2001-09-14 2003-04-03 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Glühlampe für Kraftfahrzeugscheinwerfer
DE10219729A1 (de) * 2002-05-02 2003-11-13 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Glühlampe für Kraftfahrzeugscheinwerfer

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1590164A (en) * 1920-05-26 1926-06-22 Westinghouse Lamp Co Mount for incandescent-lamp filaments
US3801178A (en) * 1970-04-07 1974-04-02 Philips Corp Method of providing support for conductors of an electric filament or discharge lamp
GB1313532A (en) * 1970-04-16 1973-04-11 Thron Electrical Ind Ltd Incandescent lamps
US3774064A (en) * 1970-04-16 1973-11-20 Thorn Electrical Ind Ltd Incandescent lamp filament supports
US4529908A (en) * 1981-10-16 1985-07-16 U.S. Philips Corporation Electric incandescent lamp for a motor-car
DD224445A1 (de) * 1984-06-07 1985-07-03 Narva Gluehlampen Halogengluehlampe mit einer im lampengestell angeordneten abblendkappe
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
EP0812004A2 (fr) * 1996-06-04 1997-12-10 Honda Giken Kogyo Kabushiki Kaisha Ampoule de lampe pour véhicule

Also Published As

Publication number Publication date
JP2004247303A (ja) 2004-09-02
DE10306178A1 (de) 2004-08-26
EP1447837A3 (fr) 2008-01-09
KR20040073384A (ko) 2004-08-19
US20040160181A1 (en) 2004-08-19

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