EP2499651B1 - Lampe à décharge à haute pression avec douille unilatérale - Google Patents

Lampe à décharge à haute pression avec douille unilatérale Download PDF

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Publication number
EP2499651B1
EP2499651B1 EP10775799.9A EP10775799A EP2499651B1 EP 2499651 B1 EP2499651 B1 EP 2499651B1 EP 10775799 A EP10775799 A EP 10775799A EP 2499651 B1 EP2499651 B1 EP 2499651B1
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EP
European Patent Office
Prior art keywords
base
discharge
lamp
pressure discharge
sealed
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
EP10775799.9A
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German (de)
English (en)
Other versions
EP2499651A1 (fr
Inventor
Jürgen Becker
Florian Bedynek
Kilian Klages
Karsten Pietsch
Matthias Protsch
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
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Osram GmbH
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Publication of EP2499651A1 publication Critical patent/EP2499651A1/fr
Application granted granted Critical
Publication of EP2499651B1 publication Critical patent/EP2499651B1/fr
Not-in-force legal-status Critical Current
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    • 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

Definitions

  • the invention relates to a high-pressure discharge lamp according to the preamble of patent claim 1.
  • the high-pressure discharge lamp according to the invention is distinguished by the following relationship for the distance A of the discharge-side end of the first electrode to the plane of the base flange and for the distance B of the discharge-side end of the second electrode to the plane of the base flange: 15 . 0 ⁇ mm ⁇ A + B 2 ⁇ 27 . 0 ⁇ mm
  • the high-pressure discharge lamp according to the invention has a low so-called light center length, that is to say a small distance between the discharge arc centroid and the reference plane of the base flange, which is used to align the discharge arc with respect to the vehicle headlight reflector.
  • the size (A + B) / 2 which serves as a measure of the light center length, is less than or equal to 27.0 mm in order to be able to use the high-pressure discharge lamp according to the invention in reflectors of flat design.
  • the size (A + B) / 2 is greater than or equal to 15.0 mm in order to use for the base and the lamp vessel holder of the high-pressure discharge lamp according to the invention the usual in high-pressure discharge lamps technology.
  • the same materials as in the generic high-pressure discharge lamp can be used for the lamp base and the lamp vessel holder of the high-pressure discharge lamp according to the invention, since in the case of the above-mentioned condition for the size (A + B) / 2, no excessively high operating temperatures occur in the high-pressure discharge lamp according to the invention.
  • the lower limit is for the value the size (A + B) / 2 still large enough to avoid shading effects by a lamp vessel holder, which is located in the region of the first sealed end.
  • the sealed ends of the discharge vessel each have a tubular extension to attach thereto an outer bulb surrounding the discharge vessel.
  • the tube-like extensions allow easy fixing of the outer bulb to the discharge vessel by pressing and melting the heated and softened outer bulb material by means of rollers on the tubular extensions.
  • the outer bulb serves as bursting and splinter protection and for the absorption of ultraviolet radiation.
  • the outer bulb for this purpose consists of hard glass or quartz glass, which is provided with ultraviolet radiation absorbing additives such as titanium oxide and cerium oxide.
  • tubular extension of the first sealed end of the discharge vessel and the outer bulb advantageously extend into the lamp base, so that a power supply for the first electrode is surrounded by the tubular extension and the outer bulb, and the length C of a protruding from the outer bulb portion of tubular extension of the first sealed end of the discharge vessel has a value in the range of 1.0 mm to 11.0 mm.
  • the distance between the projecting out of the outer bulb portion of the tubular extension of the first sealed end of the discharge vessel to the lamp base in the longitudinal direction of the discharge vessel as low as possible, for example, less than or equal to 2 mm to the best possible high voltage insulation of the power supply for the first electrode against arranged in the base To ensure metal parts.
  • the base flange advantageously consists of plastic and preferably of the same plastic as the lamp base.
  • lamp base and base flange can be produced as a plastic injection-molded part in the same process step.
  • Polyphenylene sulfide and polyetherimide are preferably suitable as plastics for the lamp base and the base flange.
  • the distance BA between the discharge-side ends of the Electrodes at a value in the range of 3.0 mm to 3.9 mm, to provide a light source that comes as close to the ideal of a point-like light source for imaging in the vehicle headlight on the one hand and on the other hand, a sufficient illuminance.
  • the curvature of the discharge vessel wall and the distance BA are formed such that the optical distance of the discharge-side electrode ends has a value in the range of 3.6 mm to 4.2 mm in order to provide a light source which is ideal for imaging in the vehicle headlight a point-like light source comes as close as possible and on the other hand allows a sufficient illuminance.
  • the high-pressure discharge lamp is designed as a metal halide high-pressure discharge lamp which contains at least xenon and halides of the metals sodium and scandium in the discharge space.
  • the aforementioned filling components of a high-pressure discharge lamp enable the emission of white light immediately after the ignition of the gas discharge in the high-pressure discharge lamp, so that the high-pressure discharge lamp can be used as a light source in a vehicle headlight.
  • the high-pressure discharge lamp according to the invention is designed as a vehicle headlamp, which has an electrical power consumption in the range of 20 watts to 35 watts in quasi-stationary operation, that is after completion of their ignition and start-up phase.
  • the figure shows a cross section through a high-pressure discharge lamp according to the preferred embodiment of the invention.
  • This high-pressure discharge lamp is a mercury-free metal halide high-pressure discharge lamp with a nominal electrical power of 25 watts.
  • Xenon and halides of the metals sodium, scandium, indium and zinc serve as the discharge medium for the gas discharge.
  • This lamp has a soffittenartiges discharge vessel 100 made of quartz glass with a gas-tight discharge chamber 110, a sockelahen first sealed end 120 and a sockelfernen second sealed end 130.
  • the lamp base has a base made of a plastic injection molded socket 400, in which the discharge vessel 100 and an outer bulb 50 fused thereto are anchored.
  • the end 410 of the base sleeve 400 facing away from the discharge vessel 100 is designed as a plug with two electrical contacts 61, 62.
  • the center contact 61 is connected in an electrically conductive manner to the power supply line 22 led out from the socket-sealed first end 120, while the other, ring-shaped electrical contact 62 is connected via one of a Ceramic tube 34 sheathed return 33 is electrically connected to the out of the second sealed end remote from the second end 130 of the discharge vessel 100 power supply 32 is connected.
  • the discharge vessel 100 is surrounded by a cylindrical, approximately coaxial with the discharge vessel 100 arranged outer bulb 50.
  • the outer bulb 50 is fused with a tubular extension 131 of the socket-distal second sealed end 130 and a tubular extension 121 extending in the base sleeve 400 of the socket-sealed first sealed end 120 of the discharge vessel 100.
  • the tubular extensions 121, 131 are formed circular cylindrical.
  • an annular holder member 70 which surrounds the outer piston 50 with a clamping fit, and four angled metal tabs 71, the first end is welded to each of the holder member 70 and the second end respectively in the Plastic material of the base sleeve 400 is anchored.
  • the base sleeve 400 has at its end remote from the electrical contacts an annular flange 420 with an end face 421 which is perpendicular to the longitudinal axis of the high-pressure discharge lamp and serves as a reference plane for alignment of the lamp in the headlight. At this end face, the base sleeve 400 has an increased wall thickness. In this area, the second ends of the metal tabs 71 are anchored in the wall of the base sleeve 400 on its inside.
  • the distance A of the discharge-side end of the socket-near first electrode 20 to the end face 421 is 17.1 mm.
  • the distance B of the discharge-side end of the socket-remote second electrode 30 to the end face 421 is 20.6 mm.
  • the Light Center Length (A + B) / 2 is therefore 18.85 mm.
  • the distance BA between the discharge-side ends of the electrodes 20, 30 is 3.5 mm.
  • the optically effective distance of the discharge-side ends of the electrodes 20, 30 depends on the refractive index and the curvature of the wall of the discharge vessel 100 in the region of the discharge space 103 and lies in the value range from 3.6 mm to 4.2 mm.
  • the length C of the protruding from the outer bulb 50 portion of the tubular extension of the socket near the first sealed end 101 of the discharge vessel 100 is 1.0 mm.
  • the distance of the protruding from the outer bulb 50 portion 122 of the tubular extension 121 of the socket near first sealed end 120 of the discharge vessel 100 to the bottom 411 of the base sleeve 400 is 1.0 mm.
  • the invention is not limited to the above-explained embodiment of the invention.
  • the invention can also be applied to single-ended high-pressure discharge lamps, in the base of which components of an ignition device for igniting the gas discharge in the high-pressure discharge lamp or components of an operating device or circuit arrangement for operating the high-pressure discharge lamp are arranged.

Landscapes

  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Discharge Lamp (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)

Claims (9)

  1. Lampe à décharge haute pression à douille unilatérale, comprenant
    - un récipient de décharge (100) qui possède deux extrémités scellées (120, 130) opposées l'une à l'autre et un espace de décharge (110) situé entre les extrémités scellées (120, 130), une première extrémité scellée (120) s'étendant dans un culot de lampe (400) et la seconde extrémité scellée (130) sortant du culot de lampe (400),
    - une première électrode (20) qui est fixée dans la première extrémité scellée (120) du récipient de décharge (100) et possède une extrémité côté décharge qui s'étend dans l'espace de décharge (110),
    - une seconde électrode (30) qui est fixée dans la seconde extrémité scellée (130) du récipient de décharge (100) et possède une extrémité côté décharge qui s'étend dans l'espace de décharge (110),
    - une bride de culot (420) qui est située sur le culot de lampe (400) et définit un plan (421) qui peut être utilisé pour ajuster la lampe à décharge haute pression dans un système optique,
    caractérisée en ce que
    pour la distance A entre l'extrémité côté décharge de la première électrode (20) et le plan (421) de la bride de culot (420) et pour la distance B entre l'extrémité côté décharge de la seconde électrode (30) et le plan (421) de la bride de culot (420), la relation suivante s'applique : 15 , 0 ⁢ mm ≤ A + B 2 ≤ 27 , 0 ⁢ mm
    Figure imgb0004
  2. Lampe à décharge haute pression à douille unilatérale selon la revendication 1, les extrémités scellées (120, 130) possédant à chaque fois un prolongement tubulaire (121, 131) et un piston extérieur (50) entourant le récipient à décharge (100) étant fixé sur les prolongements tubulaires (121, 131).
  3. Lampe à décharge haute pression à douille unilatérale selon la revendication 2, le prolongement tubulaire (121) de la première extrémité scellée (120) et le piston extérieur (50) s'étendant à l'intérieur du culot de lampe (400) de telle sorte qu'une première amenée de courant (22) pour la première électrode (20) soit entourée par le prolongement tubulaire (121) et le piston extérieur (50), et la longueur C d'une partie (122) du prolongement tubulaire (121) de la première extrémité scellée (120) dépassant à l'extérieur du piston extérieur (50) ayant une valeur comprise dans la plage de 1,0 mm à 11,0 mm.
  4. Lampe à décharge haute pression à douille unilatérale selon l'une des revendications 1 à 3, la bride de culot (420) étant en matière plastique.
  5. Lampe à décharge haute pression à douille unilatérale selon l'une des revendications 1 à 4, le culot de lampe (400) étant en matière plastique.
  6. Lampe à décharge haute pression à douille unilatérale selon l'une des revendications 1 à 5, la distance B-A entre les extrémités côté décharge des électrodes (20, 30) étant de l'ordre d'une valeur comprise dans la plage de 3,2 mm à 3,8 mm.
  7. Lampe à décharge haute pression à douille unilatérale selon l'une des revendications 1 à 6, la distance optique entre les extrémités côté décharge des électrodes (20, 30) étant de l'ordre d'une valeur comprise dans la plage de 3,6 mm à 4,2 mm.
  8. Lampe à décharge haute pression à douille unilatérale selon l'une des revendications 1 à 7, la lampe à décharge haute pression étant une lampe à décharge haute pression aux halogénures métalliques dont l'espace de décharge contient au moins du xénon et des halogénures de sodium et de scandium.
  9. Lampe à décharge haute pression à douille unilatérale selon l'une des revendications 1 à 8, exécutée en tant que phare d'automobile avec une consommation de puissance électrique comprise dans la plage de 20 Watt à 35 Watt.
EP10775799.9A 2009-11-10 2010-11-02 Lampe à décharge à haute pression avec douille unilatérale Not-in-force EP2499651B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009052624A DE102009052624A1 (de) 2009-11-10 2009-11-10 Einseitig gesockelte Hochdruckentladungslampe
PCT/EP2010/066637 WO2011057916A1 (fr) 2009-11-10 2010-11-02 Lampe à décharge à haute pression avec douille unilatérale

Publications (2)

Publication Number Publication Date
EP2499651A1 EP2499651A1 (fr) 2012-09-19
EP2499651B1 true EP2499651B1 (fr) 2014-01-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP10775799.9A Not-in-force EP2499651B1 (fr) 2009-11-10 2010-11-02 Lampe à décharge à haute pression avec douille unilatérale

Country Status (6)

Country Link
US (1) US8502449B2 (fr)
EP (1) EP2499651B1 (fr)
JP (1) JP5678080B2 (fr)
CN (1) CN102598193B (fr)
DE (1) DE102009052624A1 (fr)
WO (1) WO2011057916A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011082323A1 (de) 2011-09-08 2013-03-14 Osram Ag Hochdruckentladungslampe für Kraftfahrzeugscheinwerfer
CN102584183B (zh) * 2012-01-31 2014-04-02 杨潮平 一种两件套陶瓷泡壳及其制作方法
DE102013223708A1 (de) * 2013-11-20 2015-05-21 Osram Gmbh Hochdruckentladungslampe für Kraftfahrzeugscheinwerfer

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09509786A (ja) 1994-12-23 1997-09-30 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 キャップ付き電球
JP2002075278A (ja) * 2001-07-06 2002-03-15 Matsushita Electric Ind Co Ltd 放電ランプ
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
JP2004134100A (ja) * 2002-10-08 2004-04-30 Toshiba Lighting & Technology Corp 金属蒸気放電ランプ、投光装置、車両前照灯および金属蒸気放電ランプ点灯装置
JP2005011598A (ja) * 2003-06-17 2005-01-13 Car Mate Mfg Co Ltd ショートアーク放電灯
US6967444B2 (en) 2004-01-29 2005-11-22 Osram Sylvania Inc. Miniature reduced mercury HID lamp
CN2859206Y (zh) * 2005-07-29 2007-01-17 广东雪莱特光电科技股份有限公司 一种车用双电弧管一体化氙气金卤灯
JP4709011B2 (ja) * 2006-01-05 2011-06-22 ハリソン東芝ライティング株式会社 自動車用放電ランプ
WO2007132527A1 (fr) * 2006-05-16 2007-11-22 Masahiro Tsurumi Lampe à décharge haute tension pour véhicule
JP4755024B2 (ja) * 2006-06-01 2011-08-24 ハリソン東芝ライティング株式会社 放電ランプおよび放電ランプ装置
DE102006058887B4 (de) 2006-12-13 2019-01-17 Osram Gmbh Verfahren zum Haltern von Lampengefäßen

Also Published As

Publication number Publication date
EP2499651A1 (fr) 2012-09-19
DE102009052624A1 (de) 2011-05-12
WO2011057916A1 (fr) 2011-05-19
US8502449B2 (en) 2013-08-06
CN102598193B (zh) 2015-09-16
JP2013510412A (ja) 2013-03-21
US20120229023A1 (en) 2012-09-13
JP5678080B2 (ja) 2015-02-25
CN102598193A (zh) 2012-07-18

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