EP0887841A2 - Metallhalogenidlampe mit keramischem Entladungsgefäss - Google Patents
Metallhalogenidlampe mit keramischem Entladungsgefäss Download PDFInfo
- Publication number
- EP0887841A2 EP0887841A2 EP98110787A EP98110787A EP0887841A2 EP 0887841 A2 EP0887841 A2 EP 0887841A2 EP 98110787 A EP98110787 A EP 98110787A EP 98110787 A EP98110787 A EP 98110787A EP 0887841 A2 EP0887841 A2 EP 0887841A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- discharge vessel
- metal halide
- halide lamp
- inner part
- ceramic discharge
- 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
Links
Images
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
-
- 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
- H01J61/361—Seals between parts of vessel
- H01J61/363—End-disc seals or plug seals
-
- 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
Definitions
- the jacket tube should have the smallest possible axial distance (typically between 0.1 and 0.5 mm) to the outer part (niobium stick).
- the distance between the jacket tube and the shaft of the electrode should be for the above reasons at least 0.5 mm, preferably more than 1 mm, be.
- the diameter of the inner part is essential in all versions (more than 50%) smaller than the diameter of the outer part.
- the diameter of the inner part is dimensioned such that the current density through the inner part is at most 80 A / mm 2 . This avoids excessive heating of the inner part and in particular of the tubular casing.
- the casing tube in particular the same material as for the capillary is used (aluminum oxide).
- the outside diameter the casing tube can therefore be chosen so that it just Inner diameter of the stopper capillary (adapted to a few microns), whereby the dead volume is minimized.
- the outer part is inserted deep into the capillary. It's just one Minimum depth of 2 mm necessary for a reliable seal. The For thermal reasons, the maximum insertion depth should be 50% of the length of the Do not exceed the capillary.
- the advantage of the inner part is that even when using relatively thick niobium pins (up to 2 mm) only a thin molybdenum or tungsten wire is melted down. As a result, stresses caused by the imperfect adaptation of the thermal expansion coefficient between molybdenum and Al 2 O 3 are greatly reduced, since the absolute expansion is low. In contrast to tungsten or molybdenum, it is known that niobium is well adapted to the thermal expansion of aluminum oxide.
- tungsten is advantageous over molybdenum, in particular if the electrode is relatively short (shorter than the inner part). Because because of the lower melting point of molybdenum (compared to tungsten) the greater the risk that the weld and the molybdenum pin behind the Weld is overheated due to the proximity to the hot electrode. This should have been as a result that the weld loosens or that the molybdenum pin becomes soft will and bends under the weight of the electrode so that the electrode touches the wall of the discharge vessel and locally overheats it. In addition, tungsten is more resistant to corrosion than molybdenum.
- Tungsten is much more suitable than molybdenum, since molybdenum with Bromine reacts.
- An integral piece of tungsten wire can advantageously be used be performing both the task of the inner part as well as that of the electrode shaft. This allows a Welded connection can be dispensed with.
- the casing of the Inside a concentric ceramic double tube This has manufacturing technology Advantages.
- the material of the interior and outer part of the casing tube may also be slightly different (for example aluminum oxide with different doping).
- the tungsten pin is in the same way on the electrode shaft 15 welded, the electrode shaft 15 from the same level as above.
- Tungsten pin 14 can also be bent into a spiral. Prefers one or two turns are sufficient.
- Niobium stick 13 has a diameter of 1.3 mm.
- the tungsten pin 14 has one Diameter of 0.35 mm.
- the inner capillary tube 20 has an outer diameter of 0.8 mm, the outer capillary tube 21 has an outer diameter of 1.2 mm.
- the total length of the tungsten pin is 14.5 mm, that of Electrode 3.5 mm with a diameter of 0.7 mm.
- the distance of the Capillary tubes 20, 21 from the niobium stick and from the electrode are each 0.5 mm.
- the capillary tube 12 of the plug has a length of approximately 18 mm.
- the niobium stick sits about 2.5 mm deep.
- FIG. Another exemplary embodiment is shown in FIG.
- the stop device here is a piece of wire 25 which is in the vicinity of the discharge side End of the tungsten pin across the lamp axis on the tungsten pin is attached. It has been shown that the jacket tube is not a direct one Should have contact with the electrode, because otherwise the heat load increases cause a reaction of the aluminum oxide with the components of the filling can. Therefore, a general minimum distance between the capillary tubes is recommended to the electrode of at least 0.5. The distance is preferably greater than 1 mm.
- the tungsten pin 31 is attached to a step 32 of the electrode shaft 33.
- the step 32 which is at least 0.5 mm high, also serves as Stop device for the middle section 30a of the casing tube 30.
- the dead volume in the area near the discharge in front of the long inner middle section 30a of the casing tube 30 is filled by the helical part 34 made of molybdenum.
- the outer part here is a niobium tube 13 'with a bore 29 in the front End of the tungsten pin 31 inserted as an inner part and welded there is.
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
Description
- Figur 1
- eine Metallhalogenidlampe mit keramischem Entladungsgefäß
- Figur 2
- den Endbereich der Lampe der Figur 1 im Detail
- Figur 3
- ein weiteres Ausführungsbeispiel eines Endbereichs
- Figur 4
- ein weiteres Ausführungsbeispiel eines Endbereichs.
Claims (12)
- Metallhalogenidlampe mit keramischem Entladungsgefäß (4) aus Aluminiumoxid, wobei das Entladungsgefäß zwei Enden (6) besitzt, die mit keramischen Stopfen verschlossen sind, die jeweils ein langgezogenes Kapillarrohr (12) -im folgenden Stopfenkapillare genannt- enthalten, und wobei durch diese Stopfenkapillare (12) eine elektrisch leitende Durchführung (9,10), die bezogen auf die Entladung aus einem stiftförmigen inneren (14) Teil und einem äußeren Teil (13) besteht, hindurchgeführt und außen mit Glaslot abgedichtet ist, wobei an der Durchführung eine Elektrode (16) mit einem Schaft (15) befestigt ist, die in das Innere des Entladungsgefäßes hineinragt, dadurch gekennzeichnet, daß der innere Teil (14) ein Stift aus einem halogenidresistentem Metall ist, dessen Durchmesser maximal 0,4 mm beträgt, und der von einer rohrförmigen Ummantelung (20,21) -im folgenden Mantelrohr genannt- aus metallischem oder keramischem Material, das Aluminium enthält, umgeben ist, wobei das äußere Teil (13) zumindest über seine im Stopfen befindliche Länge und ein daran anschließender Bereich des inneren Teils (14) über eine Länge, die mindestens einen kleinen Teil der Länge des Mantelrohrs (20,21) einschließt, mittels Glaslot (18) abgedichtet ist.
- Metallhalogenidlampe mit keramischem Entladungsgefäß nach Anspruch 1, dadurch gekennzeichnet, daß der innere Teil (14) aus Wolfram, dem evtl. Rhenium zugesetzt ist, besteht und daß der äußere Teil (13) aus Niob besteht.
- Metallhalogenidlampe mit keramischem Entladungsgefäß nach Anspruch 1, dadurch gekennzeichnet, daß das Mantelrohr (20,21; 30) sich über mindestens 60% der Länge des inneren Teils (14) erstreckt.
- Metallhalogenidlampe mit keramischem Entladungsgefäß nach Anspruch 1, dadurch gekennzeichnet, daß das Mantelrohr aus mehreren axialen Abschnitten besteht.
- Metallhalogenidlampe mit keramischem Entladungsgefäß nach Anspruch 1, dadurch gekennzeichnet, daß am inneren Teil entladungsseifig eine Stoppvorrichtung (23,25) für das Mantelrohr (20,21;30) angebracht ist.
- Metallhalogenidlampe mit keramischem Entladungsgefäß nach Anspruch 1, dadurch gekennzeichnet, daß das Mantelrohr (20,21;30) einen Mindestabstand von 0,5 mm zum Schaft der Elektrode besitzt.
- Metallhalogenidlampe mit keramischem Entladungsgefäß nach Anspruch 1, dadurch gekennzeichnet, daß der äußere Teil (13) der Durchführung ein Rohr (13') ist, in dessen Bohrung (29) der innere Teil (14) gehaltert ist.
- Metallhalogenidlampe mit keramischem Entladungsgefäß nach Anspruch 1, dadurch gekennzeichnet, daß der äußere Teil (13) der Durchführung ein Stift ist, der entladungsseitig ein Haltemittel für den inneren Teil (14) besitzt, insbesondere eine Stufe (22), einen Schlitz oder ein Sackloch (24).
- Metallhalogenidlampe mit keramischem Entladungsgefäß nach Anspruch 1, dadurch gekennzeichnet, daß der innere Teil (14) aus Wolfram besteht, wobei die Füllung als Halogen mehr als 10 Mol-% Brom enthält.
- Metallhalogenidlampe mit keramischem Entladungsgefäß nach Anspruch 1, dadurch gekennzeichnet, daß der Durchmesser des inneren Teils (14) weniger als 50% des Durchmessers des äußeren Teils (13) beträgt.
- Metallhalogenidlampe mit keramischem Entladungsgefäß nach Anspruch 1, dadurch gekennzeichnet, daß der Durchmesser des inneren Teils (14) so bemessen ist, daß die Stromdichte durch das innere Teil maximal 80 A/mm2 beträgt.
- Metallhalogenidlampe mit keramischem Entladungsgefäß nach Anspruch 1, dadurch gekennzeichnet, daß das Mantelrohr (20,21;30) ein- oder zweiteilig aus konzentrischen Rohren aufgebaut ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19727430 | 1997-06-27 | ||
DE19727430A DE19727430A1 (de) | 1997-06-27 | 1997-06-27 | Metallhalogenidlampe mit keramischem Entladungsgefäß |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0887841A2 true EP0887841A2 (de) | 1998-12-30 |
EP0887841A3 EP0887841A3 (de) | 1999-10-06 |
EP0887841B1 EP0887841B1 (de) | 2010-02-17 |
Family
ID=7833876
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98110787A Expired - Lifetime EP0887841B1 (de) | 1997-06-27 | 1998-06-12 | Metallhalogenidlampe mit keramischem Entladungsgefäss |
Country Status (7)
Country | Link |
---|---|
US (1) | US6075314A (de) |
EP (1) | EP0887841B1 (de) |
JP (1) | JPH1173921A (de) |
CN (1) | CN1165956C (de) |
AT (1) | ATE458265T1 (de) |
CA (1) | CA2241698A1 (de) |
DE (2) | DE19727430A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1160831A1 (de) * | 2000-05-30 | 2001-12-05 | Japan Storage Battery Co., Ltd. | Entladungslampe |
WO2008145472A2 (de) * | 2007-05-31 | 2008-12-04 | Osram Gesellschaft mit beschränkter Haftung | Hochdruckentladungslampe |
EP2081214A1 (de) * | 2008-01-18 | 2009-07-22 | Flowil International Lighting (HOLDING) B.V. | Elektrodeneinheit für eine Hochdruck-Entladungslampe |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001067488A1 (fr) * | 2000-03-08 | 2001-09-13 | Japan Storage Battery Co., Ltd. | Lampe a decharge electrique |
US6621219B2 (en) * | 2000-12-28 | 2003-09-16 | General Electric Company | Thermally insulating lead wire for ceramic metal halide electrodes |
JP3759498B2 (ja) * | 2001-03-30 | 2006-03-22 | 松下電器産業株式会社 | 自動車前照灯用メタルハライドランプ |
EP1296356B1 (de) * | 2001-09-13 | 2014-03-05 | Ushiodenki Kabushiki Kaisha | Höchstdruck-Entladungslampe vom Kurzbogentyp |
US6774566B2 (en) * | 2001-09-19 | 2004-08-10 | Toshiba Lighting & Technology Corporation | High pressure discharge lamp and luminaire |
JP2003132839A (ja) | 2001-10-30 | 2003-05-09 | Matsushita Electric Ind Co Ltd | メタルハライドランプ |
US6744206B2 (en) * | 2002-02-25 | 2004-06-01 | Matsushita Electric Industrial Co., Ltd. | Metal halide lamp with reduced change in color temperature |
CN1314074C (zh) * | 2002-03-20 | 2007-05-02 | 松下电器产业株式会社 | 金属卤化物灯 |
DE10214777A1 (de) * | 2002-04-03 | 2003-10-16 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Metallhalogenidlampe mit keramischem Entladungsgefäß |
DE10256389A1 (de) * | 2002-12-02 | 2004-06-09 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Metallhalogenidlampe mit keramischem Entladungsgefäß |
US6774547B1 (en) | 2003-06-26 | 2004-08-10 | Osram Sylvania Inc. | Discharge lamp having a fluted electrical feed-through |
US6856079B1 (en) | 2003-09-30 | 2005-02-15 | Matsushita Electric Industrial Co., Ltd. | Ceramic discharge lamp arc tube seal |
EP1730766B1 (de) * | 2004-02-23 | 2013-03-27 | OSRAM GmbH | Elektrodensystem für eine hochdruckentladungslampe |
US20060108928A1 (en) * | 2004-11-24 | 2006-05-25 | Patent-Treuhand-Gesellschaft Fur Elektrisch Gluhlampen Mbh | Process for producing a supply conductor for a lamp, and supply conductor for a lamp, as well as lamp having a supply conductor |
US7362053B2 (en) * | 2005-01-31 | 2008-04-22 | Osram Sylvania Inc. | Ceramic discharge vessel having aluminum oxynitride seal region |
US7823353B2 (en) * | 2005-11-22 | 2010-11-02 | Masonite Corporation | Door, method of making door, and stack of doors |
US7511429B2 (en) * | 2006-02-15 | 2009-03-31 | Panasonic Corporation | High intensity discharge lamp having an improved electrode arrangement |
DE102007046899B3 (de) * | 2007-09-28 | 2009-02-12 | W.C. Heraeus Gmbh | Stromdurchführung durch Keramikbrenner in Halogen-Metalldampflampen |
US8415883B2 (en) * | 2007-12-26 | 2013-04-09 | General Electric Company | Miniature ceramic metal halide lamp having a thin leg |
US9486298B2 (en) | 2011-07-28 | 2016-11-08 | 3M Innovative Properties Company | Cartridge for dispensing a dental substance and method of assembling the cartridge |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4780646A (en) * | 1986-10-23 | 1988-10-25 | Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen Mbh | High pressure discharge lamp structure |
EP0215524B1 (de) * | 1985-09-13 | 1989-07-26 | Koninklijke Philips Electronics N.V. | Hochdruckquecksilberdampfentladungslampe |
EP0587238A1 (de) * | 1992-09-08 | 1994-03-16 | Koninklijke Philips Electronics N.V. | Hochdruckentladungslampe |
US5363007A (en) * | 1991-09-30 | 1994-11-08 | Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh | Low-power, high-pressure discharge lamp, particularly for general service illumination use |
WO1995028732A1 (en) * | 1994-04-13 | 1995-10-26 | Philips Electronics N.V. | High-pressure metal halide lamp |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3373591D1 (en) * | 1982-12-30 | 1987-10-15 | Philips Nv | High-pressure sodium discharge lamp |
US5424609A (en) * | 1992-09-08 | 1995-06-13 | U.S. Philips Corporation | High-pressure discharge lamp |
DE4242122A1 (de) * | 1992-12-14 | 1994-06-16 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Verfahren zur Herstellung einer vakuumdichten Abdichtung zwischen einem keramischen und einem metallischen Partner, insbesondere zur Anwendung bei der Herstellung eines Entladungsgefäßes für eine Lampe, sowie damit hergestellte Entladungsgefäße und Lampen |
US5430353A (en) * | 1993-07-22 | 1995-07-04 | General Electric Company | Lamp inlead assembly having a formed foil arrangement |
DE4327535A1 (de) * | 1993-08-16 | 1995-02-23 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Hochdruckentladungslampe mit keramischem Entladungsgefäß |
-
1997
- 1997-06-27 DE DE19727430A patent/DE19727430A1/de not_active Withdrawn
-
1998
- 1998-06-12 EP EP98110787A patent/EP0887841B1/de not_active Expired - Lifetime
- 1998-06-12 DE DE59814435T patent/DE59814435D1/de not_active Expired - Lifetime
- 1998-06-12 AT AT98110787T patent/ATE458265T1/de not_active IP Right Cessation
- 1998-06-22 US US09/102,067 patent/US6075314A/en not_active Expired - Lifetime
- 1998-06-24 CA CA002241698A patent/CA2241698A1/en not_active Abandoned
- 1998-06-26 CN CNB981151337A patent/CN1165956C/zh not_active Expired - Fee Related
- 1998-06-29 JP JP10182331A patent/JPH1173921A/ja active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0215524B1 (de) * | 1985-09-13 | 1989-07-26 | Koninklijke Philips Electronics N.V. | Hochdruckquecksilberdampfentladungslampe |
US4780646A (en) * | 1986-10-23 | 1988-10-25 | Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen Mbh | High pressure discharge lamp structure |
US5363007A (en) * | 1991-09-30 | 1994-11-08 | Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh | Low-power, high-pressure discharge lamp, particularly for general service illumination use |
EP0587238A1 (de) * | 1992-09-08 | 1994-03-16 | Koninklijke Philips Electronics N.V. | Hochdruckentladungslampe |
WO1995028732A1 (en) * | 1994-04-13 | 1995-10-26 | Philips Electronics N.V. | High-pressure metal halide lamp |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1160831A1 (de) * | 2000-05-30 | 2001-12-05 | Japan Storage Battery Co., Ltd. | Entladungslampe |
US6538379B2 (en) | 2000-05-30 | 2003-03-25 | Japan Storage Battery Co., Ltd. | Discharge lamp |
WO2008145472A2 (de) * | 2007-05-31 | 2008-12-04 | Osram Gesellschaft mit beschränkter Haftung | Hochdruckentladungslampe |
WO2008145472A3 (de) * | 2007-05-31 | 2009-02-26 | Osram Gmbh | Hochdruckentladungslampe |
EP2081214A1 (de) * | 2008-01-18 | 2009-07-22 | Flowil International Lighting (HOLDING) B.V. | Elektrodeneinheit für eine Hochdruck-Entladungslampe |
Also Published As
Publication number | Publication date |
---|---|
EP0887841B1 (de) | 2010-02-17 |
CN1204138A (zh) | 1999-01-06 |
JPH1173921A (ja) | 1999-03-16 |
EP0887841A3 (de) | 1999-10-06 |
US6075314A (en) | 2000-06-13 |
CN1165956C (zh) | 2004-09-08 |
DE59814435D1 (de) | 2010-04-01 |
CA2241698A1 (en) | 1998-12-27 |
ATE458265T1 (de) | 2010-03-15 |
DE19727430A1 (de) | 1999-01-07 |
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