EP0884763A2 - Scellement d'une feuille de molybdène dans le verre et lampe électrique comportant une feuille de molybdène ainsi scellée - Google Patents

Scellement d'une feuille de molybdène dans le verre et lampe électrique comportant une feuille de molybdène ainsi scellée Download PDF

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Publication number
EP0884763A2
EP0884763A2 EP98109117A EP98109117A EP0884763A2 EP 0884763 A2 EP0884763 A2 EP 0884763A2 EP 98109117 A EP98109117 A EP 98109117A EP 98109117 A EP98109117 A EP 98109117A EP 0884763 A2 EP0884763 A2 EP 0884763A2
Authority
EP
European Patent Office
Prior art keywords
molybdenum foil
molybdenum
glass
lamp
foil
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
Application number
EP98109117A
Other languages
German (de)
English (en)
Other versions
EP0884763B1 (fr
EP0884763A3 (fr
Inventor
Lothar Vollmer
Dirk Grundmann
Joachim Öhmke
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 EP0884763A2 publication Critical patent/EP0884763A2/fr
Publication of EP0884763A3 publication Critical patent/EP0884763A3/fr
Application granted granted Critical
Publication of EP0884763B1 publication Critical patent/EP0884763B1/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
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/32—Seals for leading-in conductors
    • H01J5/38—Pinched-stem or analogous seals
    • 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
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
    • H01J9/32—Sealing leading-in conductors
    • H01J9/323—Sealing leading-in conductors into a discharge lamp or a gas-filled discharge device
    • H01J9/326—Sealing leading-in conductors into a discharge lamp or a gas-filled discharge device making pinched-stem or analogous seals
    • 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
    • H01J61/368—Pinched seals or analogous seals
    • 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
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
    • H01J9/36—Joining connectors to internal electrode system

Definitions

  • the invention relates to a molybdenum foil melting in glass and an electric lamp with such a molybdenum foil sealing according to the preambles of claims 1 and 4.
  • Molybdenum foil melts in glass are used, for example gastight electrical feedthroughs in quartz glass Lamp vessels of high pressure discharge lamps and Halogen bulbs needed. Glasses are called quartz glass here, whose silicon dioxide content at least 95 percent by weight is. Because the quartz glass of the lamp vessel is much smaller thermal expansion coefficient than that from the lamp vessel outstanding, usually made of molybdenum wire Power supplies used to supply the inside of the lamp vessel arranged illuminant serve with electrical energy, has, it is namely not possible to use the power supply wires directly, that is, without auxiliary measures, in the quartz glass of the lamp vessel melt down gastight. When the lamp vessel is heated, for example, during lamp operation the power supply wires made of molybdenum are about ten times as strong expand like the surrounding quartz glass.
  • the resulting mechanical stresses would cause cracks in the quartz glass to lead.
  • sufficient Ductility can, however, despite the different thermal Expansion coefficients of quartz glass and molybdenum and the resulting mechanical stresses are gastight electrical feedthrough for lamp vessels manufactured will.
  • the opposite Ends of the molybdenum foil usually each with a power supply wire welded from molybdenum and this so created The unit is then in the lamp vessel end to be closed positioned that one of the power supply wires into the interior of the lamp vessel protrudes while the other power supply wire protrudes from the lamp vessel.
  • the quartz glass the lamp vessel end is then melted and the lamp vessel end is, for example, by means of crimping jaws from the Molybdenum foil and the power supply existing unit tightly squeezed.
  • the molybdenum foil is then in the quartz glass of the lamp vessel end fully embedded.
  • In the area of the molybdenum foil is the one consisting of the power supply lines and the molybdenum foil
  • the lead-through is sealed gas-tight in the end of the lamp vessel.
  • the molybdenum foil melts thus fulfill two different things Functions. First, they are used to produce one electrically conductive connection between the inside of the lamp vessel arranged bulbs with those from the lamp vessel outstanding power supplies and secondly ensure a gas-tight closure of the lamp vessel.
  • the molybdenum foils are usually cut off from a supply tape. You own hence a rectangular area defined by two side edges and two cut edges running perpendicular to the side edges is limited.
  • the surfaces of the molybdenum foils are common convex, that is, the thickness of the molybdenum foils increases from the middle of the film to the side edges.
  • molybdenum foil melts known in glass which, to avoid cracking in the Glass, molybdenum foils with roughened by sandblasting Have surface.
  • the molybdenum foils have a lanceolate shape Cross-section, that is, the thickness of the foils increases starting from from a maximum value in the middle of the film, in the direction of the two in Longitudinal direction, side edges running transversely to the film cut edges the film steadily.
  • the German patent DE 29 47 230 describes molybdenum foil melts for sealing lamp vessels that at least 95% are made of quartz glass. To reduce cracking in the glass are the molybdenum foils with an addition of yttrium oxide from 0.25 to 1 percent by weight.
  • the molybdenum foil melts according to the invention in glass is the at least one end delimited by a cutting edge Molybdenum foil melted into glass.
  • This measure can remove burrs that occur when cutting have formed the molybdenum foil from the supply belt at the cutting edge, be made to disappear again, so that this from Do not cut any burrs in the ridges or cracks Molybdenum foil can cause surrounding glass.
  • the wedge shape the molybdenum foil end delimited by a cut edge are advantageously produced by rolling this molybdenum foil end. Any cutting burrs on the Cut edge of the molybdenum foil smoothed.
  • the at least one molybdenum foil of the molybdenum foil melt according to the invention advantageously by two cut edges and two transverse to the Cutting edges running side edges limited and parallel a lanceolate cross-section to the cut edges. she receives thereby a convex surface, which the mechanical Tensions in the molybdenum foil melting reduced.
  • the invention Molybdenum foil melting is particularly easy advantageously for gas-tight sealing of electrical Use current feedthroughs for lamp vessels of electric lamps.
  • FIG. 1 shows a pinch seal 1 for a quartz glass Lamp vessel 2 of an electric lamp with an electric one Current lead-through, which is a molybdenum foil melt according to the invention having.
  • the electrical current feedthrough exists from a power supply wire protruding from the lamp vessel 3, gas-tight from a in the quartz glass of the pinch seal 1 melted molybdenum foil 4 and from one into the interior 5 of the lamp vessel 2 protruding electrode rod 6.
  • the power supply wire 3 and the electrode rod 6 are made also made of molybdenum and are both welded to the molybdenum foil 4.
  • the molybdenum foil 4 has a rectangular surface, the Edge of two opposite cutting edges 4b and of two in the longitudinal direction A-A, perpendicular to the cutting edges 4b extending side edges 4a is formed.
  • the cut edges 4b arise when the molybdenum foil 4 is cut off from a supply belt.
  • the surface of the molybdenum foil 4 is convex, that means that their thickness starts from the center of the film to the two Side edges 4a steadily decrease, so that the molybdenum foil 4th parallel to the cutting edges 4b a lancet-shaped cross section has (Fig. 4).
  • the ends 4c delimited by cut edges 4b Molybdenum foil 4 are tapered in a wedge shape.
  • a rectangular one is used to produce the molybdenum foil melt Piece of molybdenum foil 4 from one arranged on a supply roll Molybdenum tape cut off.
  • This molybdenum tape is already there convex, that is, its thickness increases from from the middle of the band to its side edges. This points the molybdenum foil 4 also has the convex curvature.
  • the foil ends 4c tapered in a wedge shape by rolling. The ends of the molybdenum foil 4 outside the wedge-shaped areas 4c with the power supply wire 3 or welded to the electrode rod 6, the likewise both consist of molybdenum.
  • the resulting assembly 3, 4, 6 is then in the gas-tight end of the lamp vessel introduced.
  • the quartz glass 1 in the area of the lamp vessel end softened by heating and, for example pressed onto the molybdenum foil 4 by means of crimping jaws. After this Cooling of the quartz glass 1 forms that from the power supply wire 3, the electrode rod 6 and the molybdenum foils 4 existing Unit an electrical feedthrough for the lamp vessel 2, in the area of the molybdenum foil 4 gas-tight in the lamp vessel end has melted down.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
  • Glass Compositions (AREA)
EP98109117A 1997-06-11 1998-05-19 Scellement d'une feuille de molybdène dans le verre et lampe électrique comportant une feuille de molybdène ainsi scellée Expired - Lifetime EP0884763B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19724544A DE19724544A1 (de) 1997-06-11 1997-06-11 Molybdänfolieneinschmelzung in Glas und elektrische Lampe mit einer derartigen Molybdänfolieneinschmelzung
DE19724544 1997-06-11

Publications (3)

Publication Number Publication Date
EP0884763A2 true EP0884763A2 (fr) 1998-12-16
EP0884763A3 EP0884763A3 (fr) 1999-03-17
EP0884763B1 EP0884763B1 (fr) 2003-07-23

Family

ID=7832101

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98109117A Expired - Lifetime EP0884763B1 (fr) 1997-06-11 1998-05-19 Scellement d'une feuille de molybdène dans le verre et lampe électrique comportant une feuille de molybdène ainsi scellée

Country Status (8)

Country Link
EP (1) EP0884763B1 (fr)
JP (1) JPH117918A (fr)
KR (1) KR100541506B1 (fr)
CA (1) CA2240230A1 (fr)
DE (2) DE19724544A1 (fr)
ES (1) ES2205318T3 (fr)
HU (1) HU221393B1 (fr)
TW (1) TW423025B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1548788A2 (fr) 2003-12-22 2005-06-29 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Système d'électrode pour une lampe à décharge, lampe a décharge le comprenant et procédé se son fabrication
DE102007020067A1 (de) 2007-04-27 2008-11-06 Osram Gesellschaft mit beschränkter Haftung Verfahren zur Herstellung einer Molybdänfolie für den Lampenbau und Molybdänfolie sowie Lampe mit Molybdänfolie
DE102007055171A1 (de) 2007-11-19 2009-05-20 Osram Gesellschaft mit beschränkter Haftung Verfahren zur Herstellung einer Molybdänfolie für eine elektrische Lampe und Molybdänfolie sowie elektrische Lampe mit Molybdänfolie
WO2009106133A1 (fr) * 2008-02-27 2009-09-03 Osram Gesellschaft mit beschränkter Haftung Feuille scellée, son procédé de fabrication et lampe munie d'une telle feuille

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4826402A (en) * 1986-03-28 1989-05-02 Nachtrieb Paul W High-capacity centrifugal pump
JP3664972B2 (ja) * 2000-12-05 2005-06-29 株式会社小糸製作所 アークチューブ
JP3613239B2 (ja) 2001-12-04 2005-01-26 ウシオ電機株式会社 ショートアーク型超高圧放電ランプ
JP4320760B2 (ja) 2004-03-10 2009-08-26 スタンレー電気株式会社 放電灯
JP2011049136A (ja) * 2009-07-29 2011-03-10 Panasonic Corp 高圧放電ランプ用金属箔の製造方法、高圧放電ランプ及び表示装置
TW201341126A (zh) 2012-04-13 2013-10-16 New Way Tools Co Ltd 可更小角度轉動之棘輪扳手
TW201412467A (zh) * 2012-09-20 2014-04-01 New Way Tools Co Ltd 易裝配之棘輪扳手
TW201527052A (zh) 2014-01-15 2015-07-16 New Way Tools Co Ltd 易裝配之棘輪扳手

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR982369A (fr) * 1949-03-05 1951-06-11 Belmag Quarzbrenner A G Lampe à décharge en atmosphère gazeuse
FR1068795A (fr) * 1952-02-23 1954-06-30 Lampes Sa Conducteur d'amenée perfectionné pour lampes électriques et machine pour le fabriquer
US2966607A (en) * 1959-05-26 1960-12-27 Duro Test Corp High pressure short arc lamps and method of making same
DE1927796A1 (de) * 1968-06-06 1970-07-02 Gen Electric Dichtungsverbindungsanordnung und Verfahren zu ihrer Herstellung
GB1594976A (en) * 1978-05-24 1981-08-05 Gen Electric Co Ltd High pressure electric discharge lamps
US4587454A (en) * 1984-05-17 1986-05-06 Gte Products Corporation Incandescent lamp with improved press seal
EP0579313A1 (fr) * 1992-07-14 1994-01-19 Koninklijke Philips Electronics N.V. Lampe électrique

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR982369A (fr) * 1949-03-05 1951-06-11 Belmag Quarzbrenner A G Lampe à décharge en atmosphère gazeuse
FR1068795A (fr) * 1952-02-23 1954-06-30 Lampes Sa Conducteur d'amenée perfectionné pour lampes électriques et machine pour le fabriquer
US2966607A (en) * 1959-05-26 1960-12-27 Duro Test Corp High pressure short arc lamps and method of making same
DE1927796A1 (de) * 1968-06-06 1970-07-02 Gen Electric Dichtungsverbindungsanordnung und Verfahren zu ihrer Herstellung
GB1594976A (en) * 1978-05-24 1981-08-05 Gen Electric Co Ltd High pressure electric discharge lamps
US4587454A (en) * 1984-05-17 1986-05-06 Gte Products Corporation Incandescent lamp with improved press seal
EP0579313A1 (fr) * 1992-07-14 1994-01-19 Koninklijke Philips Electronics N.V. Lampe électrique

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1548788A2 (fr) 2003-12-22 2005-06-29 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Système d'électrode pour une lampe à décharge, lampe a décharge le comprenant et procédé se son fabrication
DE102007020067A1 (de) 2007-04-27 2008-11-06 Osram Gesellschaft mit beschränkter Haftung Verfahren zur Herstellung einer Molybdänfolie für den Lampenbau und Molybdänfolie sowie Lampe mit Molybdänfolie
US8408961B2 (en) 2007-04-27 2013-04-02 Osram Gesellschaft Mit Beschraenkter Haftung Method for producing a molybdenum film for the construction of a lamp and molybdenum film and lamp with molybdenum film
DE102007020067B4 (de) * 2007-04-27 2013-07-18 Osram Gmbh Verfahren zur Herstellung einer Molybdänfolie für den Lampenbau und Molybdänfolie sowie Lampe mit Molybdänfolie
DE102007055171A1 (de) 2007-11-19 2009-05-20 Osram Gesellschaft mit beschränkter Haftung Verfahren zur Herstellung einer Molybdänfolie für eine elektrische Lampe und Molybdänfolie sowie elektrische Lampe mit Molybdänfolie
WO2009106133A1 (fr) * 2008-02-27 2009-09-03 Osram Gesellschaft mit beschränkter Haftung Feuille scellée, son procédé de fabrication et lampe munie d'une telle feuille

Also Published As

Publication number Publication date
KR100541506B1 (ko) 2006-02-28
HUP9801316A3 (en) 2001-02-28
HU9801316D0 (en) 1998-08-28
JPH117918A (ja) 1999-01-12
DE19724544A1 (de) 1998-12-17
DE59809061D1 (de) 2003-08-28
HUP9801316A2 (hu) 1999-01-28
CA2240230A1 (fr) 1998-12-11
EP0884763B1 (fr) 2003-07-23
TW423025B (en) 2001-02-21
HU221393B1 (en) 2002-09-28
ES2205318T3 (es) 2004-05-01
EP0884763A3 (fr) 1999-03-17
KR19990006871A (ko) 1999-01-25

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