EP1605490B1 - Fahrzeuglampe - Google Patents

Fahrzeuglampe Download PDF

Info

Publication number
EP1605490B1
EP1605490B1 EP05010154A EP05010154A EP1605490B1 EP 1605490 B1 EP1605490 B1 EP 1605490B1 EP 05010154 A EP05010154 A EP 05010154A EP 05010154 A EP05010154 A EP 05010154A EP 1605490 B1 EP1605490 B1 EP 1605490B1
Authority
EP
European Patent Office
Prior art keywords
vehicle lamp
lamp
metal sheet
pin
vehicle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP05010154A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1605490A3 (de
EP1605490A2 (de
Inventor
Matthias Protsch
Thomas Schmidt-Lehmann
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
Osram GmbH
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 Osram GmbH filed Critical Osram GmbH
Publication of EP1605490A2 publication Critical patent/EP1605490A2/de
Publication of EP1605490A3 publication Critical patent/EP1605490A3/de
Application granted granted Critical
Publication of EP1605490B1 publication Critical patent/EP1605490B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/50—Means forming part of the tube or lamps for the purpose of providing electrical connection to it
    • H01J5/54—Means forming part of the tube or lamps for the purpose of providing electrical connection to it supported by a separate part, e.g. base
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F21S41/192—Details of lamp holders, terminals or connectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/48—Means forming part of the tube or lamp for the purpose of supporting it

Definitions

  • the invention relates to a vehicle lamp according to the preamble of patent claim 1.
  • Such a vehicle lamp is for example in the European Patent Application EP 0 786 791 A1 disclosed.
  • This vehicle lamp has a lamp base with a cylindrical base sleeve made of plastic, which is provided with two diametrically arranged, radially outwardly directed pins made of plastic, which are used for mounting the lamp in a vehicle headlight.
  • the vehicle lamp according to the invention has a provided with the electrical terminals of the vehicle lamp lamp base, which is provided with a plastic base part, which has at least one serving for mounting the vehicle lamp in the vehicle headlight molded pin, which is equipped with stiffening means.
  • the stiffening means the mechanical stability, in particular the resistance to fracture, the at least one pin increases, so that it can be formed as part of a locking mechanism for fixing the vehicle lamp in the lamp socket of the vehicle headlamp.
  • a metal sheet is advantageously used, which is at least partially embedded in the plastic material of the plastic base part.
  • the mechanical stability of the at least one pin is increased, so that the at least one pin can be formed as part of a locking device, preferably a bayonet closure.
  • a material for the metal sheet for example, stainless steel or spring steel is suitable.
  • the metal sheet is advantageously either embedded in the plastic material of the at least one pin or is formed so as to cover at least part of the outer surface of the at least one pin.
  • the aforementioned metal sheet is formed as a tab which is integrally formed on a metal ring.
  • the at least one tab can be positioned exactly in the casting mold for the plastic base part provided with the pin in order subsequently to embed it in the material of the corresponding pin by means of a plastic injection molding process.
  • the aforementioned metal ring also has the advantage that it can also be used as an electrical connection for the vehicle lamp.
  • a high-pressure discharge lamp in particular a metal halide high-pressure discharge lamp with an electrical power consumption of about 35 watts, which is intended for use in a motor vehicle headlight.
  • This high-pressure discharge lamp has a discharge vessel, in the interior of which gas discharge electrodes and a xenon and metal halide-comprising ionizable filling for generating a gas discharge are arranged and which is surrounded by a light-transmitting, cylindrical protective piston 1.
  • the protective piston 1 is attached directly to the discharge vessel.
  • a tubular extension 1 a of the protective piston 1 is fixed in the existing plastic lamp cap 2 of the high-pressure discharge lamp. Details of the discharge vessel, the protective piston 1 and its fixation in the lamp cap 2 are for example in the Laid-Open Publication EP 0 786 791 A1 described.
  • the lamp base 2 has a cylindrical, consisting of an electrically insulating, high temperature resistant thermoplastic plastic base sleeve 20 which has two molded, diametrically arranged pins 21, 22.
  • the two cones 21, 22 extend along a diameter of the base sleeve 20 and are formed on the outside of the base sleeve 20.
  • the thickness of the pins 21, 22, that is, their extension in the longitudinal direction of the lamp, is 3 mm.
  • the remote from the protective piston 1 end 23 of the lamp cap 2 is formed as a plug and equipped with the electrical terminals of the lamp.
  • An electrical connection of the vehicle lamp is designed as a ring-shaped metal contact 3, which forms part of the outside of the plug-formed end 23.
  • the second electrical connection is an axially arranged contact pin, which in the side view of FIG. 1 is not visible. Details of this contact pin are described, for example, in the above-mentioned published patent application.
  • the annular metal contact 3 is in FIG. 3 displayed. It is made of stainless steel.
  • the annular metal contact 3 has two integrally formed, diametrically arranged tabs 31, 32 which extend radially outward. These tabs 31, 32 are respectively embedded in the plastic material of a pin 21 and 22 respectively. This embedding of the tabs 31, 32 in the plastic material of the pins 21, 22 is achieved during the manufacturing process of the base sleeve 20 by means of a plastic injection molding process.
  • the annular metal contact 3 has an integrally formed, in the radial direction angled welding lug 33 which is provided with an opening 34 and is used for electrical contacting of the power supply wire of the current return 4.
  • the tabs 31, 32 have a thickness or sheet thickness of 0.4 mm. The free ends of the flaps 31, 32 are, as in FIG. 2 shown schematically, embedded centrally in the plastic material of the respective pin 21 and 22 respectively.
  • FIGS. 4 and 5 two further embodiments for the stiffening of the pins 21, 22 of the high-pressure discharge lamp described in more detail above are shown. These embodiments differ only in the embedded in the pins 21, 22 or the pins 21, 22 enclosing metal sheets. Therefore, the same reference numerals have been used in all figures for identical lamp parts.
  • FIG. 4 illustrated second embodiment of the invention is an angled in each pin 21, 22 of the base 20 of the high pressure discharge lamp Metal sheet 41 embedded.
  • a first leg 411 of the metal sheet 41 extends into the pins 21 and 22 and is completely enclosed by the plastic material of the pin.
  • the second leg 412 of the metal sheet 41 is angled at right angles from the first leg 411 and embedded in the plastic material of the cylindrical base part 20.
  • the metal sheet 41 is not connected to the annular contact 3.
  • top and bottom and the perpendicular to the radius of the lamp cap 20 oriented end face of the pin 21 and 22 are enveloped by a substantially U-shaped metal sheet 51.
  • the largest part of the surface of the pin 21 or 22 is therefore formed by the metal sheet 51.
  • the U-leg 511 of the metal plate 51 which covers the top of the pin 21 and 22, is provided with a right angle from the U-leg 511 angled tab 5110, which is embedded in the plastic material of the base 20.
  • the second U-leg 512 covers the underside of the pin 21 or 22, while the connecting portion 513 of the U-legs 511, 512 covers the aforementioned end face of the pin 21 and 22 respectively.
  • the metal sheet 51 is not connected to the annular contact 3.
  • the second leg 412 of the metal sheet 41 according to the second embodiment of the invention or the tab 5110 of the metal sheet 51 according to the third embodiment of the invention may be electrically connected within the base 20 with an auxiliary electrode of the high pressure discharge lamp, for example a Zündangeselektrode 6 of the high pressure discharge lamp the auxiliary ignition electrode 6 is applied, for example, as an electrically conductive coating on the protective piston 1 of the high-pressure discharge lamp, as in FIG. 6 is shown according to the fourth embodiment.
  • an auxiliary electrode of the high pressure discharge lamp for example a Zündangeselektrode 6 of the high pressure discharge lamp the auxiliary ignition electrode 6 is applied, for example, as an electrically conductive coating on the protective piston 1 of the high-pressure discharge lamp, as in FIG. 6 is shown according to the fourth embodiment.
  • the electrical contact to the voltage source can be made, for example, by means of the embedded in the pin 21 first leg 411 of the metal angle 41, which can protrude for this purpose from the pin 21, or by means of the surface of the pin 21 partially covering U-legs 511, 512th of the metal sheet 51 can be realized.
  • the Zündangeselektrode 6 but can also be electrically conductive with the current feedback. 4 be connected or formed galvanically separated from the electrodes and power supply lines of the high pressure discharge lamp.
  • the fourth embodiment is correct, apart from the auxiliary ignition electrode 6 and their contacting, in all other details with the in FIG. 1 illustrated embodiment match.
  • the metal sheets are made of stainless steel or spring steel.
  • the plastic base 20 and the pin 21 formed integrally therewith consist of a thermally highly resilient plastic from the group of polyetherimide (PEI), polyphenylene sulfide (PPS) and liquid crystal polymer (LCP).
  • PEI polyetherimide
  • PPS polyphenylene sulfide
  • LCP liquid crystal polymer
  • Polyetherimide which is also known under the trade name ULTEM®, has a glass fiber content of 30 percent and the pins 21 already show a strength of more than 500 Newton without the metallic reinforcing agents. The elongation at break of this material is 2 percent.
  • LCP Liquid Crystal Polymer
  • Vectra® or Zenite® the proportion of glass fiber in the material is between 30 percent and 50 percent.
  • the pin strength is here, without metallic stiffening agent, about 150 Newton to 200 Newton.
  • the elongation at break has a value of 1.5 percent.
  • LCP is a highly anisotropic, highly crystalline material which forms crystalline regions already in the liquid phase, so that an optimization of the cone strength can be achieved by a suitable orientation of the crystals during the casting or spraying of the base 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
  • Connecting Device With Holders (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
EP05010154A 2004-05-19 2005-05-10 Fahrzeuglampe Not-in-force EP1605490B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004025268 2004-05-19
DE102004025268A DE102004025268A1 (de) 2004-05-19 2004-05-19 Fahrzeuglampe

Publications (3)

Publication Number Publication Date
EP1605490A2 EP1605490A2 (de) 2005-12-14
EP1605490A3 EP1605490A3 (de) 2007-12-12
EP1605490B1 true EP1605490B1 (de) 2010-05-05

Family

ID=35079267

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05010154A Not-in-force EP1605490B1 (de) 2004-05-19 2005-05-10 Fahrzeuglampe

Country Status (7)

Country Link
US (1) US7275855B2 (ja)
EP (1) EP1605490B1 (ja)
JP (1) JP4838535B2 (ja)
CN (1) CN1702804B (ja)
AT (1) ATE467226T1 (ja)
CA (1) CA2507906A1 (ja)
DE (2) DE102004025268A1 (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1776545B1 (en) * 2004-08-05 2009-12-02 Philips Intellectual Property & Standards GmbH Lamp having improved vibration damping
DE102006042178A1 (de) 2006-09-08 2008-03-27 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampensockel
US20090273268A1 (en) * 2006-09-14 2009-11-05 Koninklijke Philips Electronics N.V. Lamp for a light system
JP4573821B2 (ja) * 2006-10-16 2010-11-04 三洋電機株式会社 光源ランプユニット
DE102007007523A1 (de) * 2007-02-15 2008-08-21 Zeibina Kunststoff-Technik Gmbh Kontaktierungs- und Halterungsvorrichtung für Glühlampen
DE102009040572A1 (de) * 2009-09-08 2011-03-10 Osram Gesellschaft mit beschränkter Haftung Lampeneinheit
WO2022010890A1 (en) * 2020-07-06 2022-01-13 Lumileds Llc Led retrofit lamp for an automotive lighting system and method of manufacture

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1493064A (fr) * 1966-07-13 1967-08-25 Lampes Sa Culot à baïonnette pour lampes électriques
FR1590624A (ja) * 1968-06-14 1970-04-20
US5747919A (en) * 1994-12-29 1998-05-05 Philips Electronics North America Corporation Electric lamp having a hybrid skirted lamp base
DE19602625A1 (de) * 1996-01-25 1997-07-31 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Elektrische Lampe
JP2000156104A (ja) * 1998-11-20 2000-06-06 Stanley Electric Co Ltd 車両用前照灯
JP4734816B2 (ja) * 1999-12-16 2011-07-27 株式会社ニコン バヨネットマウント
JP4194251B2 (ja) * 2001-03-26 2008-12-10 ヒロセ電機株式会社 ランプソケット
DE10148114A1 (de) * 2001-09-28 2003-04-17 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Scheinwerferlampe
DE10148115A1 (de) * 2001-09-28 2003-04-17 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Scheinwerferlampe
JP3910410B2 (ja) * 2001-11-09 2007-04-25 株式会社小糸製作所 放電バルブおよびその製造方法
DE10200831A1 (de) * 2002-01-02 2003-07-17 Philips Intellectual Property Lampe und Scheinwerfer zur einfachen Montage

Also Published As

Publication number Publication date
DE102004025268A1 (de) 2005-12-08
CN1702804A (zh) 2005-11-30
JP2005332821A (ja) 2005-12-02
US7275855B2 (en) 2007-10-02
DE502005009510D1 (de) 2010-06-17
JP4838535B2 (ja) 2011-12-14
ATE467226T1 (de) 2010-05-15
EP1605490A3 (de) 2007-12-12
US20050259432A1 (en) 2005-11-24
CN1702804B (zh) 2010-09-29
CA2507906A1 (en) 2005-11-19
EP1605490A2 (de) 2005-12-14

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