EP0408981B1 - Lampe à décharge à haute pression - Google Patents

Lampe à décharge à haute pression Download PDF

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Publication number
EP0408981B1
EP0408981B1 EP90112707A EP90112707A EP0408981B1 EP 0408981 B1 EP0408981 B1 EP 0408981B1 EP 90112707 A EP90112707 A EP 90112707A EP 90112707 A EP90112707 A EP 90112707A EP 0408981 B1 EP0408981 B1 EP 0408981B1
Authority
EP
European Patent Office
Prior art keywords
discharge lamp
pressure discharge
woven hose
bulb
lamp according
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.)
Expired - Lifetime
Application number
EP90112707A
Other languages
German (de)
English (en)
Other versions
EP0408981A3 (en
EP0408981A2 (fr
Inventor
Clemens Barthelmes
Andreas Dr. Hohlfeld
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 EP0408981A2 publication Critical patent/EP0408981A2/fr
Publication of EP0408981A3 publication Critical patent/EP0408981A3/de
Application granted granted Critical
Publication of EP0408981B1 publication Critical patent/EP0408981B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01J61/84—Lamps with discharge constricted by high pressure
    • H01J61/86—Lamps with discharge constricted by high pressure with discharge additionally constricted by close spacing of electrodes, e.g. for optical projection
    • 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
    • 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

  • the invention relates to a high-pressure discharge lamp, in particular an extremely high-pressure discharge lamp, according to the preamble of claim 1.
  • High-pressure discharge lamps with a noble gas and possibly mercury and metal halide filling and in particular ultra-high pressure discharge lamps usually have long bulb necks into which the shafts of the electrodes are melted.
  • the long piston necks make it possible to place the sealing foils for the electrode shafts as far as possible from the discharge arc in order to avoid sealing problems on the sealing foils due to the heat of the discharge arc.
  • the quartz glass of the bulb neck In the area between the sealing film and the melting end in the direction of the discharge arc, the quartz glass of the bulb neck must not touch the electrode shaft during the mechanical melting process and stick there.
  • the different expansion coefficients of the adhering quartz glass and the tungsten shaft can cause cracks or cracks, which lead to lamp failure in the course of the burning time if the expanding electrode blows the quartz glass in the shaft area. To avoid this, the The electrodes of these lamps are melted by hand.
  • a high-pressure discharge lamp is known from JP-A-1 151 149, in which the shafts of the anode and cathode in the region of the bulb necks are covered by a thin metal foil in order to break the quartz glass in the melt due to the different expansion coefficients of the bulb neck and stem prevent.
  • the present invention has for its object to provide a high-pressure discharge lamp, in which the formation of cracks in the area of the bulb necks is avoided by the resulting quartz glass.
  • the quartz glass can now only be made from the tube according to the invention Touch quartz fibers. Due to the elasticity and the low thermal conductivity of the tube - due to the fabric structure - there is no longer any harmful adhesive effect between the quartz and the fabric tube.
  • the fabric tube also allows the use of centering rollers in the manufacture of the lamp around the electrodes axially to the axis of rotation of the melting machine align. This mechanical alignment has not been possible until now because the quartz glass easily stuck to the electrode shaft. So far, the alignment has been carried out by hand so that the quartz that may occur on the electrode shaft during the alignment can be removed again immediately.
  • the quartz tube should extend with one end to the sealing film and the other end should coincide with the end of the melting in the direction of the discharge space.
  • Optimal conditions result when the fabric hose extends at least 0.5 mm in front of the melting end and does not protrude more than 0.5 mm beyond the melting end.
  • the fabric tube should have an inside diameter that corresponds at least to the outside diameter of the electrode shaft and is at most 0.5 mm larger than this.
  • the fabric tube preferably has a wall thickness which is between 0.3 and 2 mm.
  • the invention is illustrated by the following figure.
  • the figure shows a high-pressure mercury vapor discharge lamp according to the invention with a power consumption of 200 W, in which the part of the lamp essential for the invention is cut open. It can be operated with both alternating and direct current.
  • the discharge bulb 1 made of quartz glass has an essentially ellipsoidal shape.
  • an electrode shaft 4, 5 made of tungsten is melted in a gas-tight manner via a molybdenum sealing film 6, 7.
  • the molybdenum sealing film 6, 7, on the other hand, is electrically connected to a base 8, 9 of the SFc 10-4 type, the base sleeve 10, 11 of which is attached to the free end of each piston neck 2, 3.
  • a threaded pin 12, 13 is welded onto the base sleeve 10, 11, on which in turn a knurled nut 14, 15 is screwed.
  • the electrical connection to the mains or ballast is established by connecting cables which are clamped between the base sleeve 10, 11 and the knurled nut 14, 15.
  • Tungsten coils 17, 18 are wound as tips on the two electrode shafts 4, 5 projecting into the discharge space 16.
  • the shaft 4 of the cathode additionally carries a further coil 19 made of a thinner tungsten wire behind the coil tip 17 and wound on the shaft.
  • Both the electrode shaft 4 and the molybdenum layering film 6 of the cathode are longer than the shaft 5 or the film 7 of the anode. This also means that the piston neck 2 for the cathode is longer than the piston neck 3 for the anode.
  • the area of the discharge bulb 1 behind the anode helix tip 18 is provided with a reflective coating 20.
  • the two electrode shafts 4, 5 are surrounded by a flexible hose 21, 22 made of braided quartz fibers.
  • the quartz tubes 21, 22 extend with one end to the sealing film.
  • the the other end of the tube 21, 22 extends up to 0.5 mm in front of the melting end in the direction of the discharge space 16.
  • the two tubes 21, 22 have an inner diameter of 1.6 mm and are therefore the same size as the outer diameter of the respective electrode shaft 4, 5
  • the wall thickness of the hoses is 0.7 mm.
  • the fabric of the quartz tube consists of over 98% SiO2, the rest are trace elements from alkali and alkaline earth oxides.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Claims (7)

  1. Lampe à décharge haute pression, notamment lampe à décharge haute pression comportant une ampoule de décharge (1) en verre de silice, sensiblement de révolution, qui contient une certaine quantité d'un ou de plusieurs gaz rares, éventuellement de mercure, ainsi qu'éventuellement d'halogénures métalliques et a chacune des extrémités de laquelle est disposé, dans l'axe longitudinal de l'ampoule (1), un col (2, 3) d'ampoule cylindrique dans chacun desquels est scellée par fusion de façon étanche aux gaz une feuille d'étanchéité (6, 7), à l'extrémité de laquelle est fixée dans la direction de l'ampoule de décharge (1) la tige (4, 5) d'une électrode qui porte un manchon dans la zone comprise entre la feuille d'étanchéité (6, 7) et l'extrémité du col (2, 3) d'ampoule, dans la direction de l'ampoule (1) de décharge, caractérisée en ce que le manchon est constitué d'un tube souple tissé (21, 22) en une matière minérale très résistante à la chaleur et isolante électriquement.
  2. Lampe à décharge haute pression selon la revendication 1, caractérisée en ce que le tube souple tissé (21, 22) est en fibres de quartz.
  3. Lampe à décharge haute pression selon la revendication 1, caractérisée en ce que le tube souple tissé (21, 22) s'étend par l'une de ses extrémités jusqu'à la feuille (6, 7) d'étanchéité.
  4. Lampe à décharge haute pression selon la revendication 1, caractérisée en ce que le tube souple tissé (21, 22) s'étend, dans la direction de la chambre de décharge (16), par son autre extrémité jusqu'à au moins 0,5 mm de l'extrémité scellée par fusion.
  5. Lampe à décharge haute pression selon la revendication 1, caractérisée en ce que le tube souple tissé (21, 22) dépasse, dans la direction de la chambre de décharge (16), par son autre extrémité de 0,5 mm au plus de l'extrémité scellée par fusion.
  6. Lampe à décharge haute pression selon la revendication 1, caractérisée en ce que le tube souple tissé (21, 22) a un diamètre intérieur qui correspond au moins au diamètre extérieur de la tige (4, 5) d'électrode et qui est au plus supérieur de 0,5 mm au diamètre extérieur de la tige (4, 5) d'électrode.
  7. Lampe à décharge haute pression selon la revendication 1, caractérisée en ce que le tube souple tissé (21, 22) a une épaisseur de paroi comprise entre 0,3 et 2 mm.
EP90112707A 1989-07-17 1990-07-03 Lampe à décharge à haute pression Expired - Lifetime EP0408981B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3923589 1989-07-17
DE3923589A DE3923589A1 (de) 1989-07-17 1989-07-17 Hochdruckentladungslampe

Publications (3)

Publication Number Publication Date
EP0408981A2 EP0408981A2 (fr) 1991-01-23
EP0408981A3 EP0408981A3 (en) 1991-04-24
EP0408981B1 true EP0408981B1 (fr) 1994-09-21

Family

ID=6385205

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90112707A Expired - Lifetime EP0408981B1 (fr) 1989-07-17 1990-07-03 Lampe à décharge à haute pression

Country Status (7)

Country Link
US (1) US5107177A (fr)
EP (1) EP0408981B1 (fr)
JP (1) JPH0357154A (fr)
KR (1) KR910003747A (fr)
DD (1) DD296783A5 (fr)
DE (2) DE3923589A1 (fr)
HU (1) HU203611B (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5598063A (en) * 1992-12-16 1997-01-28 General Electric Company Means for supporting and sealing the lead structure of a lamp
US5594302A (en) * 1995-08-22 1997-01-14 Lamptech Ltd. Metal halide lamp including iron and molybdenum
JPH1027573A (ja) * 1996-07-10 1998-01-27 Koito Mfg Co Ltd 放電ランプ装置用アークチューブ
DE19712776A1 (de) * 1996-08-21 1998-10-01 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Hochdruckentladungslampe
JP3218560B2 (ja) * 1997-02-07 2001-10-15 スタンレー電気株式会社 前照灯用メタルハライドランプ
CN1293598C (zh) * 1998-12-21 2007-01-03 皇家菲利浦电子有限公司 电灯
JP3665510B2 (ja) * 1999-06-28 2005-06-29 株式会社小糸製作所 放電ランプ装置用アークチューブ
EP1065698B1 (fr) * 1999-07-02 2008-07-30 Phoenix Electric Co., Ltd. Structure de montage pour lampe et structure de scellement de lampe l'utilisant
EP1296356B1 (fr) * 2001-09-13 2014-03-05 Ushiodenki Kabushiki Kaisha Lampe à décharge à très haute pression du type à arc court
KR20030046318A (ko) * 2001-12-05 2003-06-12 마쯔시다덴기산교 가부시키가이샤 고압방전램프의 제조방법, 고압방전램프 및 램프유닛
DE10214777A1 (de) * 2002-04-03 2003-10-16 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Metallhalogenidlampe mit keramischem Entladungsgefäß
DE102009011525A1 (de) 2009-03-03 2010-09-09 Osram Gesellschaft mit beschränkter Haftung Elektrische Lampe und Verfahren zur Herstellung
KR102071767B1 (ko) 2017-01-26 2020-03-03 산하토건(주) 혼합처리장비에 설치되어 연약지반개량용 분체 고화제를 1.5 shot 방식으로 공급하여 교반하는 교반축을 이용한 혼합처리장치

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2443632A (en) * 1946-04-16 1948-06-22 Samuel C Miller Braid shielding
US3259778A (en) * 1963-05-09 1966-07-05 Gen Electric Starting of high temperature electrode lamps
US3742283A (en) * 1971-10-28 1973-06-26 Gte Sylvania Inc Press seal for lamp having fused silica envelope
US3868528A (en) * 1974-01-14 1975-02-25 Gen Electric Quartz pinches containing sealant glass
JPS5519733A (en) * 1978-07-28 1980-02-12 Mitsubishi Electric Corp High voltage mercury gas discharge lamp
DE3205401A1 (de) * 1982-02-16 1983-08-25 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Hochdruckentladungslampe
GB8303074D0 (en) * 1983-02-04 1983-03-09 Gen Electric Co Plc Electric discharge lamps
JP2621891B2 (ja) * 1987-12-07 1997-06-18 東芝ライテック株式会社 高圧放電灯

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
151149 (TOSHIBA) 13 Juni 89, *

Also Published As

Publication number Publication date
JPH0357154A (ja) 1991-03-12
US5107177A (en) 1992-04-21
JPH0586028B2 (fr) 1993-12-09
DD296783A5 (de) 1991-12-12
EP0408981A3 (en) 1991-04-24
DE59007201D1 (de) 1994-10-27
EP0408981A2 (fr) 1991-01-23
HUT54827A (en) 1991-03-28
HU904227D0 (en) 1990-12-28
DE3923589A1 (de) 1991-01-24
HU203611B (en) 1991-08-28
KR910003747A (ko) 1991-02-28

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