EP1398823A2 - Lampe à décharge à haute pression pour projecteur de véhicule automobile - Google Patents

Lampe à décharge à haute pression pour projecteur de véhicule automobile Download PDF

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Publication number
EP1398823A2
EP1398823A2 EP03017858A EP03017858A EP1398823A2 EP 1398823 A2 EP1398823 A2 EP 1398823A2 EP 03017858 A EP03017858 A EP 03017858A EP 03017858 A EP03017858 A EP 03017858A EP 1398823 A2 EP1398823 A2 EP 1398823A2
Authority
EP
European Patent Office
Prior art keywords
discharge lamp
pressure discharge
lamp according
tubular section
iodide
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Withdrawn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
EP03017858A
Other languages
German (de)
English (en)
Other versions
EP1398823A3 (fr
Inventor
Klaus Prof. Günter
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 EP1398823A2 publication Critical patent/EP1398823A2/fr
Publication of EP1398823A3 publication Critical patent/EP1398823A3/fr
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
    • H01J61/125—Selection of substances for gas fillings; Specified operating pressure or temperature having an halogenide as principal component
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
    • H01J61/827—Metal halide arc lamps

Definitions

  • the invention relates to a high-pressure discharge lamp for motor vehicle headlights according to claim 1.
  • the laid-open specification WO 00/67294 describes a high-pressure discharge lamp for motor vehicle headlights with a ceramic discharge vessel, the one Has inner diameter less than 2 mm, in which an ionizable filling is arranged is.
  • the ionizable includes xenon, mercury and metal halides, in particular Iodides of the metals sodium and cerium and optionally also iodides of Metals calcium and dysprosium.
  • the discharge arc Due to the small dimensions of the tubular section of the discharge vessel and the electrode gap, the discharge arc is constricted considerably. In particular, the extent of the discharge arc is perpendicular to the longitudinal axis the lamp is limited exactly to the inside diameter of the tubular section. The length of the discharge arc, however, is due to the distance between the electrodes determined from each other.
  • the light-emitting discharge arc therefore has in In the longitudinal direction of the lamp, an extension of at most 10 mm, preferably even of at most 5 mm, and an extent of at most transverse to the longitudinal direction 2.0 mm, preferably even only at most 1.5 mm.
  • the tubular section of the discharge vessel is due to its high thermal stress and the chemically aggressive ionizable filling from one transparent ceramic.
  • the tubular section preferably consists of a Ceramics with a particularly high light transmission.
  • Particularly suitable ceramics for this are single crystal sapphire, aluminum oxynitride, transparent sintered Yttrium aluminum garnet or transparent sintered ytterbium aluminum garnet. These materials are more translucent than transparent sintered polycrystalline alumina ceramics.
  • the discharge vessel made of transparent ceramic, preferably single crystal Sapphire, transparent sintered yttrium aluminum garnet, aluminum oxynitride or ytterbium aluminum garnet, this filling ensures that the invention High-pressure discharge lamp a comparable good street lighting offers like the conventional high-pressure discharge lamp containing mercury. Due to their lower chemical aggressiveness or their vapor pressure the iodides of the aforementioned metals compared to fluorides, chlorides and Bromides preferred.
  • Another advantage of using the halides and in particular the iodides of the metals sodium, dysprosium, holmium, thulium and Thallium combined with xenon is that the relative proportions of sodium iodide, Dysprosium iodide, holmium iodide, thulium iodide and thallium iodide on the total amount of iodide can be selected so that the color temperature of the light emitted by the lamp at a value between 3500 Kelvin and 5000 Kelvin is and thus comparable to the conventional mercury-containing High pressure discharge lamp is.
  • the discharge vessel of the high-pressure discharge lamp according to the invention is advantageously enclosed by an outer bulb.
  • the outer bulb is used for thermal Isolation of the discharge vessel and is therefore preferably evacuated.
  • it can also be used to reduce the UV radiation emitted by the lamp used by the outer bulb, for example, from UV rays absorbent quartz glass or tempered glass.
  • the aforementioned coating is advantageous thermally conductive to ensure an even distribution of the thermal load to ensure the discharge vessel.
  • the first exemplary embodiment shown in FIG. 1 is a Metal halide high-pressure discharge lamp with a power consumption of approx. 30 watts, which is intended for use in a motor vehicle headlight.
  • This lamp has a discharge vessel 1 made of transparent sintered ceramic Yttrium Aluminum Garnet.
  • the discharge vessel 1 has a tubular, in substantially cylindrical middle section 10 and two diametrically to both Tubular end sections 11, 12 extending to the sides of this section 10 on.
  • the inner diameter of the middle section 10 is 1.5 mm.
  • two electrodes 2, 3 made of tungsten arranged a diameter of 0.3 mm so that their discharge-side ends protrude into the interior of the middle section 10 and a distance of Own 4.2 mm.
  • the discharge side forms Ends of the electrodes 2, 3 a gas discharge arc.
  • the power supply lines are gas-tight in the respective end section 11 or 12 and each consist of a wrapped with molybdenum wire 4, 5 Molybdenum stick 6, 7 and an associated niobium stick 8, 9, which by means of Glass solder 13 is fixed and sealed in the end section 11, 12.
  • the inside of the Discharge vessel 1 arranged ionizable filling consists of xenon with a Cold filling pressure of 5000 hPa (hectopascal) and 4 mg of the iodides of the metals sodium, Dysprosium, holmium, thulium and thallium, being in the total amount of iodide 30 weight percent sodium iodide, 20 weight percent dysprosium iodide, 20 weight percent Holmium iodide, 20 weight percent thulium iodide and 10 weight percent Thallium iodide is included.
  • the discharge vessel 1 is from an evacuated one Outer bulb 14 enclosed.
  • the electrodes 2, 3 are on the power supply lines 4, 6, 8 and 5, 7, 9 each with an electrical fixed in the lamp base 15 Connection 16 or 17 of the lamp connected.
  • the second exemplary embodiment of the invention shown in FIG it is also a metal halide high pressure discharge lamp with a power consumption of approximately 30 watts, which is used in a motor vehicle headlight is provided.
  • the discharge vessel 1 'of this lamp has a tubular one cylindrical middle section 10 'on, made of single crystal sapphire consists.
  • the open ends of the middle section 10 ' are each through a closure piece 11 'or 12' closed from polycrystalline aluminum oxide.
  • the Closure pieces 11 ', 12' each have a recess for receiving one end of the middle section 10 'and by sintering on the corresponding Fixed end of the middle section 10 '.
  • the inner diameter of the middle Section 10 ' is 1.5 mm.
  • Electrodes 2 ', 3' In the longitudinal axis of the discharge vessel 1 ' two electrodes 2 ', 3' made of tungsten with a diameter of 0.3 mm, so that their discharge-side ends into the interior of the central section 10 ' protrude and have a distance of 4.2 mm. During lamp operation a gas discharge arc is formed between the ends of the electrodes 2 ', 3' on the discharge side out.
  • the ends of the in the closure pieces 11 ', 12' Electrodes 2 ', 3' are each provided with a plug 11 'from the corresponding or 12 'projecting power supply connected.
  • the power supplies are arranged gas-tight in the respective closure piece 11 'or 12' and exist each made of a molybdenum pin 6 ', 7' wrapped with molybdenum wire 4 ', 5' and an associated niobium pin 8 ', 9', which is made by means of glass solder 13 'in the closure piece 11 ', 12' is fixed and sealed.
  • the outer surface of the closure pieces 11 ', 12 ' is at least in the region of the ends of the central section 10' with an opaque Niobium layer 18 'provided.
  • the inside of the discharge vessel 1 'arranged ionizable filling consists of xenon with a cold filling pressure of 5000 hPa (hectopascal) and 4 mg of the iodides of the metals sodium, dysprosium, Holmium, thulium and thallium, with 30 in the total amount of iodide % By weight sodium iodide, 20% by weight dysprosium iodide, 20 % By weight holmium iodide, 20% by weight thulium iodide and 10 Weight percent thallium iodide are included.
  • the discharge vessel 1 ' is from an evacuated outer bulb 14 '.
  • the electrodes 2 ', 3' are over the power supply lines 4 ', 6', 8 'and 5', 7 ', 9' each with one in the lamp base 15 'fixed electrical connection 16' or 17 'of the lamp connected.
EP03017858A 2002-09-13 2003-08-05 Lampe à décharge à haute pression pour projecteur de véhicule automobile Withdrawn EP1398823A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10242740 2002-09-13
DE10242740A DE10242740A1 (de) 2002-09-13 2002-09-13 Hochdruckentladungslampe für Kraftfahrzeugscheinwerfer

Publications (2)

Publication Number Publication Date
EP1398823A2 true EP1398823A2 (fr) 2004-03-17
EP1398823A3 EP1398823A3 (fr) 2006-04-19

Family

ID=31724761

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03017858A Withdrawn EP1398823A3 (fr) 2002-09-13 2003-08-05 Lampe à décharge à haute pression pour projecteur de véhicule automobile

Country Status (5)

Country Link
US (1) US7045960B2 (fr)
EP (1) EP1398823A3 (fr)
JP (1) JP2004111390A (fr)
CA (1) CA2438274A1 (fr)
DE (1) DE10242740A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006089505A2 (fr) * 2005-02-21 2006-08-31 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe a decharge haute pression
EP1724811A2 (fr) * 2005-01-31 2006-11-22 Osram-Sylvania Inc. Enceinte à décharge céramique
EP1455382A3 (fr) * 2003-03-03 2007-12-05 Osram-Melco Toshiba Lighting Ltd. Lampe à décharge à haute intensité et dispositif d'éclairage l'utilisant
CN1873904B (zh) * 2005-04-11 2010-05-12 奥斯兰姆施尔凡尼亚公司 具有优良的色彩一致性的可调暗的金属卤化物hid灯

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070057202A (ko) * 2004-08-26 2007-06-04 코닌클리즈케 필립스 일렉트로닉스 엔.브이. 반사형 코팅을 가지는 램프
JPWO2006046704A1 (ja) * 2004-10-29 2008-05-22 東芝ライテック株式会社 メタルハライドランプおよび照明装置
US7852006B2 (en) * 2005-06-30 2010-12-14 General Electric Company Ceramic lamp having molybdenum-rhenium end cap and systems and methods therewith
US7432657B2 (en) * 2005-06-30 2008-10-07 General Electric Company Ceramic lamp having shielded niobium end cap and systems and methods therewith
US7394200B2 (en) * 2005-11-30 2008-07-01 General Electric Company Ceramic automotive high intensity discharge lamp
EP2091304A4 (fr) * 2006-10-27 2011-04-27 Toshiba Lighting & Technology Lampe de décharge à haute pression, matériel d'éclairage et dispositif correspondant à la lampe
US8247972B2 (en) 2008-05-15 2012-08-21 Osram Sylvania Inc. Ceramic discharge lamp with integral burner and reflector
KR100934323B1 (ko) * 2009-07-06 2009-12-29 정풍기 세라믹 아크튜브를 이용한 제논 램프
DE102010015495B4 (de) * 2010-04-16 2012-04-26 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung zum Erzeugen von UV-Licht
CN107430980B (zh) * 2015-03-20 2020-01-17 亮锐控股有限公司 高强度放电灯

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1002961A (en) * 1961-04-11 1965-09-02 Gen Electric Improvements in electric discharge lamp
US5973453A (en) * 1996-12-04 1999-10-26 U.S. Philips Corporation Ceramic metal halide discharge lamp with NaI/CeI3 filling
US6069456A (en) * 1997-07-21 2000-05-30 Osram Sylvania Inc. Mercury-free metal halide lamp
EP1011126A2 (fr) * 1998-12-14 2000-06-21 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe aux halogénures métalliques
WO2000067294A1 (fr) * 1999-04-29 2000-11-09 Koninklijke Philips Electronics N.V. Lampe a lalogenure metallise
US20020070668A1 (en) * 1999-02-01 2002-06-13 Eastlund Bernard J. High intensity discharge lamp with single crystal sapphire envelope
EP1220295A2 (fr) * 2000-12-12 2002-07-03 Toshiba Lighting & Technology Corporation Lampe à décharge à haute pression, appareil d'alimentation pour cette lampe, et système d'éclairage avec cette lampe
EP1363313A2 (fr) * 2002-05-16 2003-11-19 Osram-Sylvania Inc. Lampe éléctrique avec reservoir du condensat et procédé d'operation d'une telle lampe

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3232207A1 (de) * 1982-08-30 1984-03-08 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Hochdruckentladungslampe kleiner leistung
WO1999005699A1 (fr) * 1997-07-23 1999-02-04 Koninklijke Philips Electronics N.V. Lampe d'halogenure metallique sans mercure
US6126889A (en) * 1998-02-11 2000-10-03 General Electric Company Process of preparing monolithic seal for sapphire CMH lamp
EP1150337A1 (fr) * 2000-04-28 2001-10-31 Toshiba Lighting & Technology Corporation Lampe à décharge aux halogénures métalliques sans mercure et système d'éclairage de véhicules utilisant une telle lampe
US6853140B2 (en) * 2002-04-04 2005-02-08 Osram Sylvania Inc. Mercury free discharge lamp with zinc iodide

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1002961A (en) * 1961-04-11 1965-09-02 Gen Electric Improvements in electric discharge lamp
US5973453A (en) * 1996-12-04 1999-10-26 U.S. Philips Corporation Ceramic metal halide discharge lamp with NaI/CeI3 filling
US6069456A (en) * 1997-07-21 2000-05-30 Osram Sylvania Inc. Mercury-free metal halide lamp
EP1011126A2 (fr) * 1998-12-14 2000-06-21 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe aux halogénures métalliques
US20020070668A1 (en) * 1999-02-01 2002-06-13 Eastlund Bernard J. High intensity discharge lamp with single crystal sapphire envelope
WO2000067294A1 (fr) * 1999-04-29 2000-11-09 Koninklijke Philips Electronics N.V. Lampe a lalogenure metallise
EP1220295A2 (fr) * 2000-12-12 2002-07-03 Toshiba Lighting & Technology Corporation Lampe à décharge à haute pression, appareil d'alimentation pour cette lampe, et système d'éclairage avec cette lampe
EP1363313A2 (fr) * 2002-05-16 2003-11-19 Osram-Sylvania Inc. Lampe éléctrique avec reservoir du condensat et procédé d'operation d'une telle lampe

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1455382A3 (fr) * 2003-03-03 2007-12-05 Osram-Melco Toshiba Lighting Ltd. Lampe à décharge à haute intensité et dispositif d'éclairage l'utilisant
EP1724811A2 (fr) * 2005-01-31 2006-11-22 Osram-Sylvania Inc. Enceinte à décharge céramique
EP1724811A3 (fr) * 2005-01-31 2008-11-19 Osram-Sylvania Inc. Enceinte à décharge céramique
US7964235B2 (en) 2005-01-31 2011-06-21 Osram Sylvania Inc. Method of treating a ceramic discharge vessel
WO2006089505A2 (fr) * 2005-02-21 2006-08-31 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe a decharge haute pression
WO2006089505A3 (fr) * 2005-02-21 2007-05-10 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Lampe a decharge haute pression
CN1873904B (zh) * 2005-04-11 2010-05-12 奥斯兰姆施尔凡尼亚公司 具有优良的色彩一致性的可调暗的金属卤化物hid灯

Also Published As

Publication number Publication date
US20050174053A1 (en) 2005-08-11
CA2438274A1 (fr) 2004-03-13
EP1398823A3 (fr) 2006-04-19
US7045960B2 (en) 2006-05-16
DE10242740A1 (de) 2004-03-18
JP2004111390A (ja) 2004-04-08

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