EP0264764A2 - Scellement pour lampe à haute pression - Google Patents

Scellement pour lampe à haute pression Download PDF

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Publication number
EP0264764A2
EP0264764A2 EP87114875A EP87114875A EP0264764A2 EP 0264764 A2 EP0264764 A2 EP 0264764A2 EP 87114875 A EP87114875 A EP 87114875A EP 87114875 A EP87114875 A EP 87114875A EP 0264764 A2 EP0264764 A2 EP 0264764A2
Authority
EP
European Patent Office
Prior art keywords
sealing washer
washer
power supply
melting
discharge space
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Withdrawn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
EP87114875A
Other languages
German (de)
English (en)
Other versions
EP0264764A3 (fr
Inventor
Horst Dr. Lange
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 EP0264764A2 publication Critical patent/EP0264764A2/fr
Publication of EP0264764A3 publication Critical patent/EP0264764A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/36—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
    • H01J61/366—Seals for leading-in conductors

Definitions

  • niobium instead of the current leads made of tungsten, those made of niobium are therefore used, whose thermal expansion coefficient corresponds approximately to that of aluminum oxide ceramics and in which the destruction of the melt does not occur.
  • the niobium again has the disadvantage that it is attacked by the aggressive fillers of the metal halides and the presence of this metal within the discharge space must therefore be avoided.
  • EP 0 074 188 B1 discloses, inter alia, a fusing for high-pressure sodium lamps in which the discharge vessel is made of aluminum oxide ceramic and in which a current lead made of niobium is guided gas-tight through the end closure, to which a tungsten current lead carrying the electrode is welded within the discharge space .
  • This publication also suggests melts with end closures made of cermet, which were further developed in the later EP 0 074 720 B1, the area of application here also extending to high-pressure lamps with a metal halide filling Power supply from niobium in the discharge space.
  • the invention specified in claim 1 has for its object to provide a melt for a discharge vessel made of alumina ceramic, which is also suitable for high pressure metal halide lamps.
  • the discharge vessel can be used for high-pressure sodium lamps and in particular also for high-pressure metal halide lamps.
  • the discharge vessel which can withstand high temperatures, enables the complete evaporation of all optically active filling substances, as a result of which the color rendering properties are improved compared to the lamps according to the prior art.
  • the niobium sealing washer which is embedded in the melt between the inner pane and the outer pane made of aluminum oxide ceramic, ensures a high level of stress-free and thus tightness even at elevated operating temperatures. This also has a positive effect on the lamp life.
  • the tube surrounding the inner power supply prevents leaks from occurring in the inner area of the melt, the play compensating for the different coefficients of thermal expansion.
  • the only figure shows a basic representation of a Melting for a high pressure metal halide or high pressure sodium discharge lamp, in which the discharge vessel 1 consists of a tubular body 2 and the end closure. To simplify the illustration, only one end of the discharge vessel 1 is shown.
  • the end closure consists of an outer pane 3 and an inner pane 4 of the same size, which are embedded close to one another in the end of the tubular body 2.
  • the tubular body 2 has a shoulder 5 which, with its depth extending into this tubular body 2, corresponds approximately to the thickness of the two disks 3, 4 taken together.
  • the tubular body 2 and the outer pane 3 and the inner pane 4 each consist of aluminum oxide ceramic.
  • a sealing washer 6 made of niobium is embedded, the diameter of which is smaller than the diameter of the two washers 3, 4.
  • the coefficient of thermal expansion of niobium is known to be close to that of aluminum oxide ceramics, so that the thermal stresses that occur during lamp operation are negligible.
  • the outer current supply 7 made of niobium facing the outer disc 3 and on the other hand the inner current supply 8 facing the inner disc 4 made of tungsten are fastened.
  • Extending between the sealing disk 6 and the electrode 9 is a tube 8a made of aluminum oxide ceramic which surrounds the inner power supply 8 with a certain clearance.
  • the game is dependent on the different diameters used for the internal power supply and has the purpose of compensating for the different thermal expansion coefficients when the lamp is in operation.
  • the disks 3, 4 are each provided with a concentric opening, through which the respective associated current feeds guide 7, 8 is guided.
  • the power supply lines 7, 8 are fastened to the sealing disk 6, for example, by means of an electrically conductive welded connection.
  • a helical electrode 9 made of tungsten is fastened to the end of the internal current supply 8 located within the discharge space.
  • the entire end closure of the discharge vessel 1 is sealed gas-tight by means of a metal halide-resistant glass solder 10, which fills the capillary spaces between the individual parts to be sealed, the end of the tube 8a also being sealed with the sealing washer 6 and the inner washer 4.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
EP87114875A 1986-10-23 1987-10-12 Scellement pour lampe à haute pression Withdrawn EP0264764A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3636110 1986-10-23
DE19863636110 DE3636110A1 (de) 1986-10-23 1986-10-23 Einschmelzung fuer eine hochdruckentladungslampe

Publications (2)

Publication Number Publication Date
EP0264764A2 true EP0264764A2 (fr) 1988-04-27
EP0264764A3 EP0264764A3 (fr) 1989-09-06

Family

ID=6312335

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87114875A Withdrawn EP0264764A3 (fr) 1986-10-23 1987-10-12 Scellement pour lampe à haute pression

Country Status (4)

Country Link
US (1) US4780646A (fr)
EP (1) EP0264764A3 (fr)
JP (1) JPS63184258A (fr)
DE (1) DE3636110A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0477735A1 (fr) * 1990-09-28 1992-04-01 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe à décharge à haute pression
EP0639853A1 (fr) * 1993-08-16 1995-02-22 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe à décharge à haute pression avec récipient à décharge en céramique
US11758847B2 (en) 2019-09-19 2023-09-19 Deere & Company Residue quality assessment and performance system for a harvester
US12310285B2 (en) 2023-02-27 2025-05-27 Deere & Company Agricultural operation evaluation system and method
US12406387B2 (en) 2019-07-19 2025-09-02 Deere & Company Crop residue based field operation adjustment
US12457934B2 (en) 2023-01-09 2025-11-04 Deere & Company Residue sensing and cleaning system

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8809577D0 (en) * 1988-04-22 1988-05-25 Emi Plc Thorn Discharge arc lamp
JP2662813B2 (ja) * 1989-03-31 1997-10-15 東芝ライテック株式会社 金属蒸気放電ランプ
US5404078A (en) * 1991-08-20 1995-04-04 Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen Mbh High-pressure discharge lamp and method of manufacture
US5424609A (en) * 1992-09-08 1995-06-13 U.S. Philips Corporation High-pressure discharge lamp
EP0751549B1 (fr) * 1995-01-13 2003-08-06 Ngk Insulators, Ltd. Lampe a decharge haute pression et procede de production correspondant
US5866982A (en) * 1996-01-29 1999-02-02 General Electric Company Arctube for high pressure discharge lamp
US5661367A (en) * 1996-08-08 1997-08-26 Philips Electronics North America Corporation High pressure series arc discharge lamp construction with simplified starting aid
US5861714A (en) * 1997-06-27 1999-01-19 Osram Sylvania Inc. Ceramic envelope device, lamp with such a device, and method of manufacture of such devices
DE19727428A1 (de) * 1997-06-27 1999-01-07 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Metallhalogenidlampe mit keramischem Entladungsgefäß
DE19727430A1 (de) * 1997-06-27 1999-01-07 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Metallhalogenidlampe mit keramischem Entladungsgefäß
JP3709560B2 (ja) * 2002-01-21 2005-10-26 日本碍子株式会社 高圧放電灯用組み立て体および高圧放電灯
US7215081B2 (en) * 2002-12-18 2007-05-08 General Electric Company HID lamp having material free dosing tube seal
US7132797B2 (en) * 2002-12-18 2006-11-07 General Electric Company Hermetical end-to-end sealing techniques and lamp having uniquely sealed components
US7839089B2 (en) * 2002-12-18 2010-11-23 General Electric Company Hermetical lamp sealing techniques and lamp having uniquely sealed components
CN1969366B (zh) * 2004-06-14 2011-06-08 皇家飞利浦电子股份有限公司 陶瓷金属卤化物放电灯
US20060001346A1 (en) * 2004-06-30 2006-01-05 Vartuli James S System and method for design of projector lamp
US7358666B2 (en) * 2004-09-29 2008-04-15 General Electric Company System and method for sealing high intensity discharge lamps
US7432657B2 (en) * 2005-06-30 2008-10-07 General Electric Company Ceramic lamp having shielded niobium end cap and systems and methods therewith
US7615929B2 (en) 2005-06-30 2009-11-10 General Electric Company Ceramic lamps and methods of making same
US7852006B2 (en) 2005-06-30 2010-12-14 General Electric Company Ceramic lamp having molybdenum-rhenium end cap and systems and methods therewith
US7378799B2 (en) * 2005-11-29 2008-05-27 General Electric Company High intensity discharge lamp having compliant seal
US8299709B2 (en) * 2007-02-05 2012-10-30 General Electric Company Lamp having axially and radially graded structure
DE102007044629A1 (de) * 2007-09-19 2009-04-02 Osram Gesellschaft mit beschränkter Haftung Hochdruckentladungslampe
US20100026181A1 (en) * 2008-08-01 2010-02-04 Osram Sylvania Inc. Ceramic discharge vessel and method of making same
WO2020045495A1 (fr) * 2018-08-30 2020-03-05 京セラ株式会社 Structure en céramique

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL153508B (nl) * 1966-11-30 1977-06-15 Philips Nv Werkwijze voor het vacuuemdicht verbinden van een keramisch voorwerp met een metalen voorwerp en elektrische ontladingsbuis voorzien van een stroomtoevoergeleider verkregen volgens die werkwijze.
NL172194C (nl) * 1973-02-16 1983-07-18 Philips Nv Hogedrukontladingslamp.
US3916242A (en) * 1974-07-30 1975-10-28 Us Army Electrode seal and electrode mount for alkali-metal vapor lamps
HU174714B (hu) * 1977-01-06 1980-03-28 Egyesuelt Izzolampa Ehlektricheskaja razrjadnaja lampa
GB2105904B (en) * 1981-09-04 1985-10-23 Emi Plc Thorn High pressure discharge lamps
DE3268402D1 (en) * 1981-09-15 1986-02-20 Emi Plc Thorn Discharge lamps
EP0187401A1 (fr) * 1984-12-18 1986-07-16 Koninklijke Philips Electronics N.V. Lampe à décharge à haute pression

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0477735A1 (fr) * 1990-09-28 1992-04-01 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe à décharge à haute pression
US5140222A (en) * 1990-09-28 1992-08-18 Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen M.B.H High-pressure discharge lamp
EP0639853A1 (fr) * 1993-08-16 1995-02-22 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Lampe à décharge à haute pression avec récipient à décharge en céramique
US12406387B2 (en) 2019-07-19 2025-09-02 Deere & Company Crop residue based field operation adjustment
US11758847B2 (en) 2019-09-19 2023-09-19 Deere & Company Residue quality assessment and performance system for a harvester
US12035657B2 (en) 2019-09-19 2024-07-16 Deere & Company Residue quality assessment and performance system for a harvester
US12457934B2 (en) 2023-01-09 2025-11-04 Deere & Company Residue sensing and cleaning system
US12310285B2 (en) 2023-02-27 2025-05-27 Deere & Company Agricultural operation evaluation system and method

Also Published As

Publication number Publication date
JPS63184258A (ja) 1988-07-29
US4780646A (en) 1988-10-25
DE3636110A1 (de) 1988-04-28
EP0264764A3 (fr) 1989-09-06

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Inventor name: LANGE, HORST, DR.