EP0886879A1 - Lampe electrique - Google Patents

Lampe electrique

Info

Publication number
EP0886879A1
EP0886879A1 EP97951112A EP97951112A EP0886879A1 EP 0886879 A1 EP0886879 A1 EP 0886879A1 EP 97951112 A EP97951112 A EP 97951112A EP 97951112 A EP97951112 A EP 97951112A EP 0886879 A1 EP0886879 A1 EP 0886879A1
Authority
EP
European Patent Office
Prior art keywords
lamp
leaf spring
shaped
metallic
opening
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.)
Granted
Application number
EP97951112A
Other languages
German (de)
English (en)
Other versions
EP0886879B1 (fr
Inventor
Peter Helbig
Hermann Steiner
Hans Wild
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 EP0886879A1 publication Critical patent/EP0886879A1/fr
Application granted granted Critical
Publication of EP0886879B1 publication Critical patent/EP0886879B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H01J5/58—Means for fastening the separate part to the vessel, e.g. by cement
    • H01J5/60—Means for fastening the separate part to the vessel, e.g. by cement for fastening by mechanical means

Definitions

  • the invention relates to an electric lamp according to the preamble of claim 1.
  • Such an electric lamp is described for example in the patent application PCT / DE96 / 01982.
  • This patent application describes an electric lamp with a cementless base for use in a motor vehicle headlight.
  • This lamp has a lamp base made of metal and plastic parts.
  • the lamp base has a metallic holder part in which the lamp bulb is fixed, a metallic support sleeve carrying the holder part and a plastic base part provided with the electrical connections of the lamp, in which the support sleeve is anchored.
  • the metallic support sleeve of the lamp is ring-shaped and matched to the fitting diameter of the opening of the headlight reflector designed as a lamp holder and is equipped with at least one pressure spring which, after the lamp has been installed in the reflector, bears against the reflector wall in the region of the lamp holder.
  • This at least one pressure spring ensures a firm seat of the lamp in the lamp socket of the reflector and compensates for small tolerances in the manufacture of the lamp base and the opening of the headlight reflector designed as a lamp socket.
  • the at least one pressure spring is designed as a curved leaf spring, the ends of which are on the inner wall of the metallic, ring-shaped carrier sleeve.
  • the at least one leaf spring has an outwardly curved section which extends through an opening in the carrier sleeve and, after the lamp has been installed in the reflector, bears against the reflector wall in the region of the lamp holder, and two inwardly curved sections which are located on both sides of the outwardly curved portion of the leaf spring are arranged.
  • the lamp base is equipped with at least one pressure spring which, after the lamp has been installed in the headlight reflector, bears against the reflector wall in the region of the lamp holder and ensures that the lamp is firmly seated in the lamp holder of the reflector.
  • the pressure spring is designed as a curved leaf spring. It has an outwardly arched section which extends through an opening in the carrier sleeve and which, after the lamp has been installed in the headlight reflector, is in contact with the reflector wall and, according to the invention, is provided with a V-shaped region.
  • At least the connecting piece connecting the two V-legs reaches through the opening in the carrier sleeve, so that after the lamp is installed in the headlight reflector, it rests resiliently on the reflector wall designed as a lamp holder.
  • the spring action of the pressure spring compared to the above-cited Improved state of the art. Due to the V-shaped area of the section that bulges outwards, the contact area between the lamp holder and the pressure spring is reduced in comparison to the prior art and the pressure is increased.
  • the angle which the two V-legs of the V-shaped region form with one another is advantageously chosen such that it lies between 80 degrees and 110 degrees.
  • the connecting piece connecting the two V-legs is advantageously rounded.
  • the two inwardly curved sections of the leaf spring are advantageously U-shaped.
  • FIG. 1 shows a schematic side view of an electric lamp according to the invention
  • FIG. 2 shows a plan view of the plastic base part and the metallic carrier sleeve of the electric lamp shown in FIG. 1, which is injected therein
  • Figure 3 is a side view of the pressure spring according to the invention.
  • the preferred embodiment of the electric lamp according to the invention is a single-filament halogen lamp which is suitable for is intended for use in a motor vehicle headlight.
  • This lamp has a glass, essentially cylindrical lamp bulb 50 with a tightly squeezed lamp bulb end 50a, which is referred to as a pinch base 50a.
  • the dome 50b of the lamp bulb 50 is provided with a black, light-absorbing coating.
  • An incandescent filament 50c which is aligned parallel to the lamp bulb axis and is connected in an electrically conductive manner to current leads 51 led out of the squeezing foot 50a serves as the light source.
  • the lamp bulb 50 is fixed with its pinch base 50a in a metallic holder part 52 designed as a fixed ring.
  • the fixed ring 52 is carried by a metallic intermediate ring 58, which is equipped with three molded, angled welding tabs 58a.
  • the intermediate ring 58 is in turn laser-welded to a metallic carrier sleeve 53.
  • the lamp base also has a plastic base part 54 provided with the electrical connections 55 of the lamp, in which the support sleeve 53 is anchored.
  • the electrical connections 55 of the lamp are each welded to one of the power supply lines 51.
  • the plastic base part 54 is an injection molded part into which the metallic support sleeve 53 is injected.
  • the carrier sleeve 53 has three integrally formed reference lugs 53a which are arranged equidistantly along a circumference and which serve for adjusting the filament 50c and for fastening the lamp in the reflector (not shown) of the headlight.
  • the reference lugs 53a are angled away from the carrier sleeve 53 and lie in a common plane.
  • the welding tabs 58a of the intermediate ring 58 are laser-welded to these reference lugs 53a.
  • the intermediate ring 58 offers additional adjustment options in the reference plane defined by the reference lugs 53a.
  • the plastic base part 54 has an annular, conical groove 54b, in which a sealing ring (not shown) made of rubber or silicone is arranged.
  • the sealing ring lies against the outside of the reflector wall and seals the opening of the reflector designed as a lamp holder.
  • the inner diameter of the sealing ring is matched to the conical groove 54b and varies linearly with the height of the sealing ring.
  • An arched leaf spring 1 (FIG. 3), which serves to fasten the lamp in the headlight, projects through an opening 53b arranged in the wall of the ring-shaped carrier sleeve 53 below one of the three reference lugs 53a.
  • the ends 11, 12 of the leaf spring 1 rest on the inner wall of the carrier sleeve 53 and on a stop 59a, 59b formed in one piece with the plastic base part 54, so that the leaf spring 1 is fixed in a clamping manner between these two stops 59a, 59b designed as a holder.
  • the three reference lugs 53a, the sealing ring arranged in the groove 54b and the pressure spring 1 serve to fasten the lamp in the lamp holder of the headlight reflector.
  • the lamp base and the lamp holder form a bayonet catch.
  • the lamp With the lamp bulb 50 first, is inserted into the opening of the reflector designed as a lamp socket, the three reference lugs 53a each penetrating through a cutout in the edge of the opening that fits the position. Then the lamp is rotated in the lamp socket up to a stop so that the reflector wall with a clamp fit is arranged between the reference lugs 53a and the sealing ring.
  • the pressure spring 1 rests resiliently on the edge of the opening of the reflector designed as a lamp holder. In order to prevent incorrect installation of the lamp in the reflector, all three reference lugs 53a have a different shape. The same naturally also applies to the reference lugs 53a matched recesses in the opening designed as a lamp holder. Details of the pressure spring 1 are shown in FIG. 3.
  • the pressure spring 1 is designed as a curved leaf spring. It has two slightly curved ends 11, 12, which bear against the inner wall of the ring-shaped carrier sleeve 53 after their assembly. Two stops 59a, 59b, which are made in one piece with the plastic base part 54 and against which the ends 11, 12 abut, also serve to fix the leaf spring 1. The leaf spring 1 is thereby clamped between these stops 59a, 59b (Fig. 10). It has an outwardly curved section 10 with a V-shaped area 100 which, after the mounting of the leaf spring 1, extends through the opening 53b in the carrier sleeve 53 and, after the lamp has been installed in the headlight, is clamped against the reflector opening in the form of a lamp holder.
  • the V-legs 101, 102 of the V-shaped area 100 form an angle with one another of approximately 96 degrees and are connected to one another by a rounded connecting piece 103.
  • the opening 53b is shown in the plan view in FIG. 2 only with broken lines, since it is covered by one of the reference lugs 53a.
  • the outwardly curved section 10 of the leaf spring 1 is connected to one of the leaf spring ends 11 and 12 by two inwardly curved, U-shaped sections 13 and 14, respectively.
  • the leaf spring 1 consists of a spring steel sheet with a sheet thickness of 0.25 mm.
  • the reference number 60 in FIG. 2 designates the bushings for the current leads 51 of the lamp in the plastic base part 54.

Landscapes

  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Glass Compositions (AREA)
  • Liquid Developers In Electrophotography (AREA)
  • Electroluminescent Light Sources (AREA)
  • Luminescent Compositions (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Springs (AREA)

Abstract

Cette lampe électrique, notamment pour les phares de véhicules à moteur, comprend un culot avec une cosse métallique annulaire de support (53) et au moins un ressort de compression (1) pour fixer la lampe dans sa douille. Le ou les ressorts de compression (1) se présentent sous forme de ressorts à lames cintrés dont les extrémités (11, 12) s'appuient sur la paroi interne de la cosse de support et qui présentent une zone en V (100) qui pénètre à travers un passage (53b) dans la cosse de support (53).
EP97951112A 1996-12-18 1997-12-10 Lampe electrique Expired - Lifetime EP0886879B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE29622029U 1996-12-18
DE29622029U DE29622029U1 (de) 1996-12-18 1996-12-18 Elektrische Lampe
PCT/DE1997/002876 WO1998027567A1 (fr) 1996-12-18 1997-12-10 Lampe electrique

Publications (2)

Publication Number Publication Date
EP0886879A1 true EP0886879A1 (fr) 1998-12-30
EP0886879B1 EP0886879B1 (fr) 2002-03-27

Family

ID=8033510

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97951112A Expired - Lifetime EP0886879B1 (fr) 1996-12-18 1997-12-10 Lampe electrique

Country Status (12)

Country Link
US (1) US6095866A (fr)
EP (1) EP0886879B1 (fr)
JP (1) JP3869019B2 (fr)
KR (1) KR100469209B1 (fr)
CN (1) CN1106661C (fr)
AT (1) ATE215263T1 (fr)
BR (1) BR9707546A (fr)
DE (2) DE29622029U1 (fr)
ES (1) ES2175502T3 (fr)
HU (1) HU221941B1 (fr)
TW (1) TW343349B (fr)
WO (1) WO1998027567A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19843506A1 (de) * 1998-09-23 2000-03-30 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Elektrische Lampe
DE19855265A1 (de) * 1998-12-01 2000-06-21 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Elektrische Lampe und Beleuchtungsvorrichtung mit einer derartigen elektrischen Lampe
DE19855411A1 (de) * 1998-12-01 2000-06-08 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Elektrische Lampe
JP2000228101A (ja) * 1999-02-08 2000-08-15 Matsushita Electronics Industry Corp 蛍光ランプ
DE102004007150A1 (de) * 2004-02-12 2005-08-25 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Sockel für eine Scheinwerferlampe und Scheinwerferlampe
RU2631835C1 (ru) * 2016-06-16 2017-09-27 Юлия Алексеевна Щепочкина Цоколь электрической лампы

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5120233A (en) * 1984-12-17 1992-06-09 Ford Motor Company Retaining mechanism for securing a lamp base with a socket
US5216319A (en) * 1990-09-26 1993-06-01 U.S. Philips Corporation Capped high-pressure discharge lamp
US5320562A (en) * 1992-07-01 1994-06-14 U.S. Philips Corporation Capped electric lamp
AU707896B2 (en) * 1995-02-15 1999-07-22 British Telecommunications Public Limited Company Voice activity detection
CN1097282C (zh) * 1995-05-03 2002-12-25 皇家菲利浦电子有限公司 带灯头的电灯
JPH10513008A (ja) * 1995-11-16 1998-12-08 フィリップス エレクトロニクス ネムローゼ フェンノートシャップ プッシュイン・プッシュアウトランプホルダ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9827567A1 *

Also Published As

Publication number Publication date
DE59706765D1 (de) 2002-05-02
KR100469209B1 (ko) 2005-03-16
ATE215263T1 (de) 2002-04-15
EP0886879B1 (fr) 2002-03-27
TW343349B (en) 1998-10-21
HUP9902494A2 (hu) 1999-11-29
HU221941B1 (hu) 2003-02-28
US6095866A (en) 2000-08-01
WO1998027567A1 (fr) 1998-06-25
DE29622029U1 (de) 1998-04-16
JP2000506674A (ja) 2000-05-30
HUP9902494A3 (en) 2000-09-28
ES2175502T3 (es) 2002-11-16
CN1211337A (zh) 1999-03-17
JP3869019B2 (ja) 2007-01-17
CN1106661C (zh) 2003-04-23
BR9707546A (pt) 1999-07-27
KR19990082363A (ko) 1999-11-25

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