EP0764970A2 - Lampe à décharge haute pression - Google Patents

Lampe à décharge haute pression Download PDF

Info

Publication number: EP0764970A2
Authority: EP; European Patent Office
Prior art keywords: discharge lamp; pressure discharge; tube; lamp according; protuberance
Prior art date: 1995-09-22
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

Application number

EP96113577A

Other languages

German (de)

English (en)

Other versions

EP0764970B1 (fr

EP0764970A3 (fr

Inventor

Gottfried Eichelbrönner

Stefan Dr. Jüngst

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.)

1995-09-22

Filing date

1996-08-23

Publication date

1997-03-26

1996-08-23 Application filed by Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH

1997-03-26 Publication of EP0764970A2 publication Critical patent/EP0764970A2/fr

1997-04-23 Publication of EP0764970A3 publication Critical patent/EP0764970A3/xx

1999-11-03 Application granted granted Critical

1999-11-03 Publication of EP0764970B1 publication Critical patent/EP0764970B1/fr

2016-08-23 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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
- H01J61/827—Metal halide arc lamps

Definitions

the invention is based on a high-pressure discharge lamp according to the preamble of claim 1.
metal halide lamps the color rendering of which is improved by the fact that a ceramic discharge vessel is used which permits an increase in the operating temperature compared to a discharge vessel made of quartz glass.
a ceramic discharge vessel is used which permits an increase in the operating temperature compared to a discharge vessel made of quartz glass.
an application is also possible with high pressure sodium lamps.
EP-A 609 477 and EP-A 528 428 lamps are already known in which a ceramic discharge vessel is sealed by means of two end plugs made of non-conductive cermet (composite material).
the coefficient of expansion of the cermet lies between that of the ceramic discharge vessel and that of the feedthrough.
the bushing consists at least on one side of a tube made of molybdenum or another metal, the coefficient of expansion of which is similarly small to that of molybdenum, e.g. Tungsten, rhenium or an alloy of these metals.
the pipe is sintered directly into the stopper.
the tube has a protuberance that extends substantially transversely to the axis of the tube and is anchored in the end plug prevents the formation of leaks along the interface.
the protuberance is preferably radially symmetrical and has a small thickness of at most 1 mm, preferably less than 0.5 mm.
the outside diameter of the protuberance should preferably correspond to at most 75% of the outside diameter of the end plug.
a perforated disc which is attached to the tube is advantageously used.
An annular base body with a radiation ring is also very suitable, so that the individual beams run radially outwards.
the protuberance can have a tubular collar piece for better attachment to the tube.
the protuberance tapers at its outer edge, so that particularly good anchoring in the cermet is achieved.
disturbances in the cermet structure due to the smooth transition are avoided.
the pipe is composed of two partial pipes, the ends of which are connected to one another in the region of the end plug.
the protuberance is attached in the area of the connection between the partial pipes.
the protuberance between the two partial tubes is used as a separate part.
the protuberance is formed on the connection-side end of a partial tube as an integral part of the partial tube.
the protuberance can be integrally formed on either the connection-side end of the partial tube on the discharge side or the partial tube facing away from the discharge.
connection between the two partial pipes can be made in different ways.
a first possibility is that the two partial tubes are butt welded together.
Another possibility is that a short piece of the partial tube on the discharge side is fitted into the partial tube remote from the discharge.
the diameters of the two partial tubes are different and matched to one another in such a way that the inside diameter of one tube is matched to the outside diameter of the other tube.
a particularly good anchoring of the protuberance in the end plug is achieved when the surface of the protuberance is uneven. Instead of being flat, it can be waved like a ruff or have a high surface roughness. Other options are changes in the cross-section of the pane thickness or radially circumferential kinks, grooves or furrows in the pane.
Such lamps are produced by first pushing the protuberance, which preferably consists of the same material as the tube, onto the tube and welding it over the entire circumference. Attention must be paid to tightness.
a suitable method is laser or electron beam welding.
the cermet mold is then placed around the bushing thus prepared and the cermet powder is poured in. Then the cermet is pressed so that a green body is formed which already contains the leadthrough.
the electrode is preferably welded to the bushing at this point in time or even later, namely only after the pre-sintering. Otherwise, the production corresponds to the prior art cited at the beginning.
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.
the axially arranged discharge vessel 4 made of Al 2 O 3 ceramic is bulged in the middle 5 and has cylindrical ends 6. It is held in the outer bulb 1 by means of two power supply lines 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 a ceramic end plug 11 at the end of the discharge vessel.
the first bushing is a molybdenum pin 9 with a diameter of approximately 250 ⁇ m
the second bushing is a molybdenum tube 10 with a diameter of approximately 1400 ⁇ m.
Both bushings hold electrodes 12 on the discharge side, consisting of an electrode shaft 13 made of tungsten and a helix 14 pushed on at the discharge side end.
the filling of the discharge vessel consists of an inert ignition gas, e.g. Argon, from mercury and additives to metal halides.
the end plugs 11 essentially also consist of Al 2 O 3 , metallic tungsten or also molybdenum being contained as a further component in a proportion of 30% by weight. Further possibilities are specified in the prior art described at the beginning.
the molybdenum tube 10 with an outer diameter of 1.4 mm and a wall thickness of 0.2 mm is sintered directly into an end plug 11 with an outer diameter of 3.5 mm and a length of 5.0 mm.
a perforated disk 15 made of molybdenum with an outer diameter of 2.4 mm is attached to the tube 10 approximately centrally with respect to the length of the end plug 11.
the thickness of the disc is 0.5 mm, the inner diameter is adapted to the outer diameter of the tube.
the attachment of the disc 15 ' is facilitated by a collar 16 which is designed as a short piece of pipe, the inside diameter of which is adapted to the outside diameter of the tubular bushing 10.
the collar 16 can be produced, for example, by deep-drawing the disk.
the outer edge of the disc 15 ' ends in a tip 17.
Fig. 3 shows a further embodiment in which the tubular bushing consists of two partial tubes 20, 21, both of which have the same diameter.
the disc 25 is designed as an integral end piece of one (26) of the two partial tubes.
the second partial tube 27 is butt welded to the underside of the disk 25. The manufacture of such a tube with an integral end piece is possible, for example, by deep drawing.
the first partial tube 30 on the discharge side has a smaller diameter than the second partial tube 31 on the side remote from the discharge.
a disc 25 is formed on the discharge side of the second partial tube 31.
the first partial tube 30 is pushed a short distance into the second partial tube 31 and welded to it in the area of the disk 25. In this way, a particularly good fixation of the two partial pipes to one another is achieved.
FIG. 6a and 6b show, on an enlarged scale, cross-sectional profiles of panes whose surface is uneven. Such disks are particularly suitable for the exemplary embodiment according to FIG. 5.
the disk 25a has a cross section with a groove-like, circular curvature 33 and an elongated tip.
the cross section of the disk 25b is reduced in places (34), so that the adhesiveness is improved.
Fig. 7 shows an embodiment in which the tightness and adhesive strength is improved by a central larger disc 35 and two additional smaller-sized discs 36, which are distributed evenly over the length of the end plug 11.
FIG. 8 shows a further embodiment of a protuberance in plan view, namely an annular base body 40 with a radiation ring 41. It should be noted that the outside diameter of the base body is significantly larger than the outside diameter of the tube in order to ensure a sealing effect.
the beam 41 serves for better anchoring in the end plug.
tubular bushing and the protuberance are used for both ends of the discharge vessel.

Landscapes

Vessels And Coating Films For Discharge Lamps (AREA)

EP96113577A 1995-09-22 1996-08-23 Lampe à décharge haute pression Expired - Lifetime EP0764970B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE19535338A DE19535338A1 (de)	1995-09-22	1995-09-22	Hochdruckentladungslampe
DE19535338		1995-09-22

Publications (3)

Publication Number	Publication Date
EP0764970A2 true EP0764970A2 (fr)	1997-03-26
EP0764970A3 EP0764970A3 (fr)	1997-04-23
EP0764970B1 EP0764970B1 (fr)	1999-11-03

Family

ID=7772941

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP96113577A Expired - Lifetime EP0764970B1 (fr)	1995-09-22	1996-08-23	Lampe à décharge haute pression

Country Status (3)

Country	Link
EP (1)	EP0764970B1 (fr)
JP (1)	JP3037865U (fr)
DE (2)	DE19535338A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2000057453A1 (fr) *	1999-03-19	2000-09-28	Koninklijke Philips Electronics N.V.	Lampe electrique
US7099055B1 (en)	1998-04-03	2006-08-29	Thomson Licensing	Film scanner with film weaver correction facility
WO2007065827A1 (fr) *	2005-12-09	2007-06-14	Osram Gesellschaft mit beschränkter Haftung	Lampe aux halogenures metalliques

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP2526008Y2 (ja) *	1990-03-27	1997-02-12	株式会社シマノ	伸縮式元竿構造
JP2531742Y2 (ja) *	1991-08-05	1997-04-09	株式会社シマノ	伸縮式元竿
JP2531743Y2 (ja) *	1991-08-06	1997-04-09	株式会社シマノ	伸縮式元竿

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5404078A (en) *	1991-08-20	1995-04-04	Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen Mbh	High-pressure discharge lamp and method of manufacture
DE9207816U1 (de) *	1992-06-10	1992-08-20	Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München	Hochdruckentladungslampe

1995
- 1995-09-22 DE DE19535338A patent/DE19535338A1/de not_active Withdrawn
1996
- 1996-08-23 EP EP96113577A patent/EP0764970B1/fr not_active Expired - Lifetime
- 1996-08-23 DE DE59603552T patent/DE59603552D1/de not_active Expired - Fee Related
- 1996-09-19 JP JP1996009476U patent/JP3037865U/ja not_active Expired - Lifetime

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US7099055B1 (en)	1998-04-03	2006-08-29	Thomson Licensing	Film scanner with film weaver correction facility
WO2000057453A1 (fr) *	1999-03-19	2000-09-28	Koninklijke Philips Electronics N.V.	Lampe electrique
WO2007065827A1 (fr) *	2005-12-09	2007-06-14	Osram Gesellschaft mit beschränkter Haftung	Lampe aux halogenures metalliques
US7719192B2 (en)	2005-12-09	2010-05-18	Osram Gesellschaft Mit Beschraenkter Haftung	Metal halide lamp with intermetal interface gradient

Also Published As

Publication number	Publication date
JP3037865U (ja)	1997-05-27
EP0764970B1 (fr)	1999-11-03
DE19535338A1 (de)	1997-03-27
DE59603552D1 (de)	1999-12-09
EP0764970A3 (fr)	1997-04-23

Publication	Publication Date	Title
EP0602530B1 (fr)	1999-03-03	Procédé pour fabriquer un joint étanche au vide pour un récipient céramique et une lampe à décharge
EP0479087B1 (fr)	1995-12-20	Lampe à décharge à haute pression
EP0528427B1 (fr)	1995-05-31	Lampe à décharge à haute pression
DE9112690U1 (de)	1991-12-05	Hochdruckentladungslampe
EP0887840B1 (fr)	2003-02-19	Lampe à halogénure métallique avec enveloppe céramique
EP0570772A1 (fr)	1993-11-24	Lampe à décharge à haute pression
DE2641880A1 (de)	1977-03-31	Elektrische entladungslampe
EP0602529A2 (fr)	1994-06-22	Lampe de décharge à haute pression ayant un récipient céramique de décharge
EP0451647A2 (fr)	1991-10-16	Lampe à décharge à haute pression et son procédé de fabrication
EP0573880B1 (fr)	1996-03-27	Lampe à décharge haute pression
EP0479089B1 (fr)	1995-11-22	Lampe à décharge à haute pression et procédé de fabrication
EP0764970B1 (fr)	1999-11-03	Lampe à décharge haute pression
DE3429105A1 (de)	1985-02-28	Metalldampfentladungslampe
EP0472100A2 (fr)	1992-02-26	Lampe à décharge à haute pression
EP0639853A1 (fr)	1995-02-22	Lampe à décharge à haute pression avec récipient à décharge en céramique
EP1351278B1 (fr)	2007-05-09	Lampe à halogénure métallique avec enveloppe céramique
EP1730766A2 (fr)	2006-12-13	Systeme d'electrodes pour lampe a decharge gazeuse haute pression
EP1372184A2 (fr)	2003-12-17	Système d'électrodes pour une lampe aux halogénures métalliques et lampe équipée d'un tel système
DE3305468C2 (fr)	1993-05-19
DE69707350T2 (de)	2002-05-29	Elektrodenanordnung für Natrium-Hochdruckentladungslampe und deren Herstellungsverfahren
EP1665318A2 (fr)	2006-06-07	Lampe electrique scellee des deux cotes et procede de fabrication
DE20210400U1 (de)	2003-11-13	Elektrodensystem für eine Metallhalogenidlampe und zugehörige Lampe
EP2396802B1 (fr)	2013-01-02	Lampe à décharge à haute pression
DE9201256U1 (de)	1993-03-04	Hochdruckgasentladungslampe für Gleichstrombetrieb
DE19529465A1 (de)	1997-02-13	Hochdruckentladungslampe

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