EP1434252A2 - Lampe à halogéne métallique avec enveloppe céramique, système d'électrodes pour une telle lampe et procédé pour fabriquer un tel système - Google Patents

Lampe à halogéne métallique avec enveloppe céramique, système d'électrodes pour une telle lampe et procédé pour fabriquer un tel système Download PDF

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Publication number
EP1434252A2
EP1434252A2 EP03026131A EP03026131A EP1434252A2 EP 1434252 A2 EP1434252 A2 EP 1434252A2 EP 03026131 A EP03026131 A EP 03026131A EP 03026131 A EP03026131 A EP 03026131A EP 1434252 A2 EP1434252 A2 EP 1434252A2
Authority
EP
European Patent Office
Prior art keywords
pin
metal halide
bore
halide lamp
niobium
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Withdrawn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
EP03026131A
Other languages
German (de)
English (en)
Other versions
EP1434252A3 (fr
Inventor
Matthias Lenz
Dieter Trypke
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 EP1434252A2 publication Critical patent/EP1434252A2/fr
Publication of EP1434252A3 publication Critical patent/EP1434252A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • 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
    • H01J5/46—Leading-in conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes
    • 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

Definitions

  • the invention is based on a metal halide lamp with a ceramic discharge vessel according to the preamble of claim 1. It is especially from lamps with a power of 20 to 400 W, preferably from 100 W.
  • a high-pressure discharge lamp is known from WO 91/09416, in which a bushing made of a large diameter Nb tube with a thin one Wall exists while the electrode is small by a pin Diameter is formed.
  • the ratio of the diameters is at least 4: 1.
  • the connection between the bushing and the electrode is produced by crimping, the crimping being carried out in such a way that a passage to the inside of the Nb tube remains, which acts as a reservoir for the Fills the discharge vessel.
  • This technique is used for high pressure sodium lamps, using a ceramic discharge tube as standard used.
  • connection technology is welding or soldering, see for example EP 652 587. This type of However, connection is difficult to master, so a relatively high scrap must be accepted and also requires by nature high investments. Lowering the committee, on the other hand, requires high costs.
  • the discharge vessel has two ends, the are closed with plugs, and an electrical conductive implementation is passed, being on the implementation an electrode is fastened with a shaft, which is inside the discharge vessel protrudes.
  • Implementation and electrode are as follows collectively referred to as the electrode system.
  • the electrode system includes at least two components that act as pins of different diameters are executed, wherein the larger component is a niobium stick, and wherein the smaller component lying on the inside on the discharge side, a pin made of molybdenum or is tungsten, which is inserted in a hole in the niobium stick, the ratio of the diameter of the smaller component to that of the Nb pin is between 30 and 65% and the inserted pin in the hole is fixed by a mechanical pressing process.
  • niobium can also a high niobium alloy (e.g. NbZr with an Nb content of at least 60 mol%) or a metal with similar properties such as niobium, in terms of its ductility, are preferably used tantalum.
  • the mechanical pressing process by crimping or clamping is preferred realized.
  • a local pressing under crimping and under clamping to understand a comprehensive squeezing of the wall of the bore.
  • the smaller component is an electrode shaft made of tungsten, which is inserted into the niobium stick. It can be both around a long shaft for a capillary and one act short shaft (without plug capillary).
  • the smaller component is one Molybdenum pin as an inner part of the leadthrough, while the niobium pin is the outer part of the implementation.
  • the inner part lies in the capillary, while the outer part sits at the end of the capillary.
  • the bore is about 0.8 to 2.5 mm deep, which is sufficient Stop for the pin to be inserted is given.
  • the plug capillary bore be inserted Pin is adjusted in diameter. This is particularly the case if the bore is at most 0.04 mm, preferably 0.01 to 0.025 mm, larger is.
  • the hole usually has a circumferential wall.
  • an embodiment is advantageous in which the bore is slotted and has at least two tongues.
  • the present invention is also directed to the electrode system for a Metal halide lamp with ceramic discharge tube directed alone, wherein the electrode system comprises two components that differ as pins Are executed diameter, the larger component Is niobium stick, and wherein the smaller component is a pin made of molybdenum or Is tungsten, which is inserted into a bore of the niobium pin, the Ratio of the diameter of the smaller component to that of the Nb pin between 30 and 65% is and the inserted pin in the hole by one mechanical pressing process is attached.
  • the discharge vessel has two ends that are closed with ceramic plugs.
  • the implementation is a pin that is sealed on the outside of the stopper by glass solder.
  • an electrode is attached to the inside with its shaft, which leads to the inside of the discharge vessel protrudes.
  • the electrode can have a head which is designed as a ball, pin, molded part or spiral.
  • a filler coil may be attached to the shaft if a capillary is used becomes.
  • the lamp power is preferably between 70 and 400 W, however also larger powers (1000 W) as well as smaller powers (up to 20 W) are possible.
  • the stopper can be made in one part, but also in several parts. For example can in a manner known per se a stopper capillary from an annular Be part of the plug.
  • the bushing or its outer part is typically over that in the stopper the entire length is melted into the glass solder. Important is, that the niobium stick completely because of the corrosive attack of the filling on niobium is covered by glass solder.
  • the bushing made of Nb has a bore into which a pin made of molybdenum or tungsten is inserted on the discharge side.
  • the bore is either with a continuous wall provided or with a wall that is slotted. It is then preferred provided with two, or more, slits.
  • the diameter of the joined Pen is between 30 and 65% (including marginal values) of the Nb pin.
  • the remaining wall thickness of the Nb pin is chosen so that due to the material properties of the Nb a purely mechanical bracket of the pin to be joined by pressing, for example by crimping or pressing (holding by a press fit) is possible.
  • the hole adapted to the diameter of the pin to be joined.
  • the length of this pen does not matter major role.
  • a bore of about 1.3 to 2.5 mm depth is sufficient, preferably are 1.5 to 2.0 mm deep, regardless of the wattage.
  • the feedthrough is a niobium stick with a circumferential hole, because there is a hole easy and safe to manufacture and provides a very good fixation of the to be joined Pin.
  • the Nb pin is slotted Provide hole, which is relatively expensive to manufacture, but under special circumstances, possibly with high wattages and greater weight of the pin to be joined, allows better crimping.
  • a metal halide lamp with an output of 150 W is shown schematically in FIG. It consists of a cylindrical outer bulb 1 made of quartz glass which defines a lamp axis and is squeezed (2) and base (3) on two sides. Of course, the lamp can also be closed on one side and provided, for example, with a screw base.
  • the axially arranged discharge vessel 4 made of Al 2 O 3 ceramic is cylindrical or bulbous in shape and has two ends 6. It is held in the outer bulb 1 by means of two current leads 7, which are connected to the base parts 3 via foils 8.
  • the power supply lines 7 are welded to bushings 9, 10 which are each fitted in an end plug 12 at the end 6 of the discharge vessel.
  • the stopper part is designed as an elongated capillary tube 12 (stopper capillary).
  • the end 6 of the discharge vessel and the stopper capillary 12 are, for example, sintered together directly.
  • An electrode 15 is located on the discharge side on the discharge side.
  • the bushings 9, 10 are each designed as a niobium stick and protrude up to into about a quarter of the length of the capillary tube 12. It stretches within the capillary tube 12 towards the discharge volume elongated electrode shaft 16 made of tungsten with one on the discharge side End of the shaft pushed-on helix 17.
  • the discharge vessel is filled, e.g. Argon, from mercury and additives to metal halides.
  • a metal halide filling without Mercury, preferably xenon and in particular a high ignition gas Pressure well above 1.3 bar can be selected.
  • the niobium pin 9 is inserted approximately 3 mm deep into the capillary 12 and sealed with glass solder 19. It is important that the glass solder this niobium stick completely covered and also the beginning of the shaft 16 (1 to 2 mm) is still covered by the glass solder.
  • FIG. 2 the electrode system is shown in detail, in side view ( Figure 2a) and in a side view rotated by 90 ° (FIG. 2b).
  • implementation 9 is a slotted niobium stick with a diameter of 0.88 mm. He owns a hole of 2 mm depth and 0.52 mm diameter. This hole is provided with two breakthrough slots, so that from the Wall two tongues 14 remain.
  • the shaft 16 is in the bore inserted from tungsten and fastened there by crimping (dent 17). to For better clarity, the shaft 16 is not shown fully inserted. The crimping takes place locally at two opposite points 17 of the two tongues 14.
  • the diameter of the shaft 16 is 0.50 mm.
  • the part of the shaft located in the stopper capillary is of a filling spiral 10 surrounded by molybdenum to minimize dead volume.
  • FIG. 3 A further exemplary embodiment of an electrode system is shown in FIG.
  • a niobium stick 20 with a diameter serves as bushing 9, 10 of 0.88 mm. It has a bore 21 of 2 mm deep and 0.42 mm Diameter. This bore has a circumferential wall 22 (Fig. 3a). In the bore is inserted into the shaft 16 made of tungsten (FIG. 3b) and there attached by crimping (Fig. 3c). The crimping takes place locally on two opposite ones Places the wall and leaves two pressure points there 24. The diameter of the shaft 16 is 0.40 mm.
  • the one in the capillary lying part of the shaft is of a filler coil 23 made of molybdenum surrounded to minimize the dead volume.
  • the diameter of the Nb pin and the shaft can vary depending on the wattage be chosen. in general the ratio (diameter of the shaft) :( diameter of the Nb pin) in the range 30 to 65%, independent whether a slot or circumferential hole is used. at lower wattages the ratio is rather at the bottom, higher ones Wattage rather at the top. In another embodiment under When using molybdenum, this ratio is rather higher than when using of tungsten, namely approx. 30 to 50% higher, based on tungsten.
  • a simple embodiment that is not intended for a stopper capillary 4 shows there the Nb pin 25 in FIG. 4a alone with the bore 26, while in Fig. 4b the short W-pin 27 as an electrode shaft inserted and clamped there.
  • the crimping method is also suitable, for example, to a connection between the Nb pin 30 as an outer part of a bushing and to produce a Mo core pin 31 as an inner part of a bushing, because here too the difference in size of the diameter in the applicable Range (30 to 65%).
  • a crimp dent is given as reference numeral 34 see.
  • the core pin 31 is equipped with a filling spiral 33.
  • connection between the Mo core pin 31 and the Electrode shaft 32 made of tungsten in a conventional manner by means of welding to make, because the size difference between shaft and core pin is too small is. It is typically around 70 to 100%.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Discharge Lamp (AREA)
EP03026131A 2002-12-02 2003-11-13 Lampe à halogéne métallique avec enveloppe céramique, système d'électrodes pour une telle lampe et procédé pour fabriquer un tel système Withdrawn EP1434252A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10256389A DE10256389A1 (de) 2002-12-02 2002-12-02 Metallhalogenidlampe mit keramischem Entladungsgefäß
DE10256389 2002-12-02

Publications (2)

Publication Number Publication Date
EP1434252A2 true EP1434252A2 (fr) 2004-06-30
EP1434252A3 EP1434252A3 (fr) 2006-03-22

Family

ID=32308941

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03026131A Withdrawn EP1434252A3 (fr) 2002-12-02 2003-11-13 Lampe à halogéne métallique avec enveloppe céramique, système d'électrodes pour une telle lampe et procédé pour fabriquer un tel système

Country Status (6)

Country Link
US (1) US20040135511A1 (fr)
EP (1) EP1434252A3 (fr)
JP (1) JP2004186155A (fr)
CN (1) CN100505141C (fr)
CA (1) CA2451829A1 (fr)
DE (1) DE10256389A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005083744A2 (fr) * 2004-02-23 2005-09-09 Patent-Treuhand- Gesellschaft Für Elektrische Glühlampen Mbh Systeme d'electrodes pour lampe a decharge gazeuse haute pression
DE102004019185A1 (de) * 2004-04-16 2005-11-10 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Hochdruckentladungslampe
US7358674B2 (en) * 2004-07-27 2008-04-15 General Electric Company Structure having electrodes with metal core and coating
US8089212B2 (en) * 2008-08-08 2012-01-03 General Electric Company Lower turn per inch (TPI) electrodes in ceramic metal halide (CMH) lamps
JP2011034980A (ja) * 2010-11-04 2011-02-17 Osram Melco Toshiba Lighting Kk 高圧放電ランプ
DE102012213191A1 (de) 2012-07-26 2014-01-30 Osram Gmbh 2hochdruckentladungslampe
US20150084501A1 (en) * 2013-09-25 2015-03-26 General Electric Company Electrode design in a ceramic metal halide (cmh) lamp

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3476969A (en) * 1967-02-16 1969-11-04 Westinghouse Electric Corp Capillary ceramic discharge lamp with closure means therefor
GB1465212A (en) * 1975-05-12 1977-02-23 Gen Electric Electric discharge lamps
WO1991009416A1 (fr) * 1989-12-14 1991-06-27 Gte Products Corporation Jonction par sertissage de l'electrode au tube de traversee dans une lampe a decharge en arc
US5352952A (en) * 1991-10-11 1994-10-04 Patent-Treuhand-Gesellschaft F. Elektrische Gluehlampen Mbh High-pressure discharge lamp with ceramic discharge vessel
EP0652587A1 (fr) * 1993-11-09 1995-05-10 Koninklijke Philips Electronics N.V. Lampe électrique
US6075314A (en) * 1997-06-27 2000-06-13 Patent-Truehand-Gesellschaft Fuer Electriche Gluelampen Mbh Metal-halide lamp with specific lead through structure
US20020008476A1 (en) * 2000-05-31 2002-01-24 Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh Metal halide lamp with ceramic discharge vessel
US6437509B1 (en) * 1997-12-20 2002-08-20 Thomas Eggers Electrode for discharge lamps

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Publication number Priority date Publication date Assignee Title
US3243635A (en) * 1962-12-27 1966-03-29 Gen Electric Ceramic lamp construction
US3564328A (en) * 1968-07-29 1971-02-16 Corning Glass Works Ceramic articles and method of fabrication
DE2221374C2 (de) * 1972-05-02 1983-02-10 Hilti AG, 9494 Schaan Pulverkraftbetriebenes Setzgerät
US3911313A (en) * 1974-05-17 1975-10-07 Gte Sylvania Inc Electrode for arc discharge lamp
GB1475093A (en) * 1974-10-30 1977-06-01 Thorn Electrical Ind Ltd Electrode mounting assembly in high-pressure sodium discharge lamp
US4065691A (en) * 1976-12-06 1977-12-27 General Electric Company Ceramic lamp having electrodes supported by crimped tubular inlead
US4342938A (en) * 1980-03-31 1982-08-03 General Electric Company Universal burning ceramic lamp
JPS57119456A (en) * 1981-01-16 1982-07-24 Seiko Instr & Electronics Ltd Sealed alkaline battery
JPS58139658A (ja) * 1982-02-10 1983-08-19 Mitsubishi Electric Corp 固定子扇形鉄心板の板取り方法
US4464603A (en) * 1982-07-26 1984-08-07 General Electric Company Ceramic seal for high pressure sodium vapor lamps
HU196014B (en) * 1986-10-23 1988-08-29 Tungsram Reszvenytarsasag Current input wire of electric discharge lamp
JPH01220363A (ja) * 1988-02-26 1989-09-04 Toshiba Corp セラミック放電灯
JPH11354076A (ja) * 1998-06-05 1999-12-24 Toto Ltd 放電灯及びその封着方法
JP2000090882A (ja) * 1998-09-11 2000-03-31 Toshiba Lighting & Technology Corp 高圧放電ランプおよび照明装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3476969A (en) * 1967-02-16 1969-11-04 Westinghouse Electric Corp Capillary ceramic discharge lamp with closure means therefor
GB1465212A (en) * 1975-05-12 1977-02-23 Gen Electric Electric discharge lamps
WO1991009416A1 (fr) * 1989-12-14 1991-06-27 Gte Products Corporation Jonction par sertissage de l'electrode au tube de traversee dans une lampe a decharge en arc
US5352952A (en) * 1991-10-11 1994-10-04 Patent-Treuhand-Gesellschaft F. Elektrische Gluehlampen Mbh High-pressure discharge lamp with ceramic discharge vessel
EP0652587A1 (fr) * 1993-11-09 1995-05-10 Koninklijke Philips Electronics N.V. Lampe électrique
US6075314A (en) * 1997-06-27 2000-06-13 Patent-Truehand-Gesellschaft Fuer Electriche Gluelampen Mbh Metal-halide lamp with specific lead through structure
US6437509B1 (en) * 1997-12-20 2002-08-20 Thomas Eggers Electrode for discharge lamps
US20020008476A1 (en) * 2000-05-31 2002-01-24 Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh Metal halide lamp with ceramic discharge vessel

Also Published As

Publication number Publication date
DE10256389A1 (de) 2004-06-09
EP1434252A3 (fr) 2006-03-22
JP2004186155A (ja) 2004-07-02
US20040135511A1 (en) 2004-07-15
CN100505141C (zh) 2009-06-24
CA2451829A1 (fr) 2004-06-02
CN1516227A (zh) 2004-07-28

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