EP0230051B1 - Hochdruckentladungslampe und Verfahren zu ihrer Herstellung - Google Patents

Hochdruckentladungslampe und Verfahren zu ihrer Herstellung Download PDF

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Publication number
EP0230051B1
EP0230051B1 EP86118071A EP86118071A EP0230051B1 EP 0230051 B1 EP0230051 B1 EP 0230051B1 EP 86118071 A EP86118071 A EP 86118071A EP 86118071 A EP86118071 A EP 86118071A EP 0230051 B1 EP0230051 B1 EP 0230051B1
Authority
EP
European Patent Office
Prior art keywords
cap
lamp vessel
lamp
base
pressure 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.)
Expired
Application number
EP86118071A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0230051A1 (de
Inventor
Werner Eisele
Jürgen Dr. Heider
Erhard Rasch
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 EP0230051A1 publication Critical patent/EP0230051A1/de
Application granted granted Critical
Publication of EP0230051B1 publication Critical patent/EP0230051B1/de
Expired 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
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
    • H01J9/245—Manufacture or joining of vessels, leading-in conductors or bases specially adapted for gas discharge tubes or lamps
    • H01J9/247—Manufacture or joining of vessels, leading-in conductors or bases specially adapted for gas discharge tubes or lamps specially adapted for gas-discharge lamps
    • 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 single-ended high-pressure discharge lamp with a lamp vessel from which two current leads are led out at one end, this end of the lamp vessel being fitted into a receptacle in the base, and the current leads being connected to connections on the base.
  • JP-A 60 124 346 a metal vapor discharge lamp is known, the outer bulb of which is sealed with a plate foot melt, a flashover between the two current leads in the hollow plate tube being prevented by the plate tube being filled with an insulating material.
  • the object of the invention is to prevent flashovers in the base area in the case of discharge lamps with a base on one side.
  • the advantages achieved by the invention are, in particular, that reliable hot re-ignition of compact high-pressure discharge lamps with a base on one side is made possible with a short distance between the power supplies.
  • the intermediate layer according to the invention not only prevents a breakdown in air between the two power supply lines, but at the same time also prevents sliding spark discharge along the base-side end of the lamp vessel.
  • a particularly suitable material for the intermediate layer is in particular fibrous web, e.g. Quartz wool, glass wool or ceramic fibers, since the loose structure of the material with its interwoven fibers extends the discharge path between the power supply lines in the entire base area and, at the same time, due to its compressibility, ensures an exact adaptation to the base-side end of the lamp vessel, although this end is shaped irregularly by the squeezing process is. Fiber webs also resist the high operating temperatures in the base area, the volume change in the base area associated with the temperature increase also not impairing the exact adjustment of the intermediate layer due to the elastic properties of the fiber web. In particular, a fiber web made of ceramic fibers offers processing advantages combined with high dielectric strength.
  • fibrous web e.g. Quartz wool, glass wool or ceramic fibers
  • the figure shows a schematic representation of a preferred embodiment of a high-pressure discharge lamp according to the invention.
  • a compact metal halide high-pressure discharge lamp 1 of low power (35-150 W) is shown with an overall length of approx. 85 mm and a largest outside diameter of approx. 30 mm.
  • a discharge vessel 2 squeezed on one side contains, in addition to a filling of mercury and additions of metal halides and noble gas, two electrodes 3, 4, the shafts 5, 6 of which are made of films are melted into the pinch in a vacuum-tight manner.
  • the discharge vessel 2 is held in an evacuated outer bulb 9, which is squeezed on one side, by inner power supply wires 7, 8.
  • Both the discharge vessel 2 and the outer bulb 9 forming the actual lamp vessel in this preferred embodiment are made of quartz glass.
  • outer power supply lines 11, 12 are melted in a vacuum-tight manner by means of foils.
  • the inner power supply wires 7, 8 establish the electrical connection between the electrode shafts 5, 6 of the discharge vessel and the outer power supplies 11, 12 each via the foils.
  • the distance between the outer power supply lines 11, 12 is 12 mm.
  • the outer bulb 9 is fitted at the end 10, at which the pinch is located, into the receptacle 13 of a base 14 made of plastic.
  • the receptacle 13 is limited by the floor 15.
  • the outer power supply lines 11, 12 are soldered to connections 16, 17 on the underside of the base.
  • Ceramic fleece 19 Between the bottom 15 and the end 10 of the outer bulb 9 there is an intermediate layer 18 of a fiber web made of ceramic fibers, hereinafter referred to as ceramic fleece 19; it fills the entire space between the bottom 15 and the end 10 of the outer bulb.
  • a mat-like ceramic fleece 19 of the size 6 mm ⁇ 20 mm corresponding to the dimensions of the base 15 is first punched out of a larger piece of fiber pile with a layer thickness of approximately 3 mm and inserted into the receptacle 13 of the base 14.
  • a base device now fits the base 14 into the centered lamp vessel 9 attached above it.
  • the loose structure of the ceramic fleece 19 does not make it necessary to punch out special bores for external power supply lines 11, 12.
  • a spring regulates the contact pressure of the base 14 on the lamp vessel 9. This spring is dimensioned such that a resulting force of a maximum of about 15 N is guaranteed.
  • the layer thickness of the ceramic fleece 19 is reduced to 1.1 mm, which results in a dielectric strength of 26 kV.
  • the ignition voltages for the hot re-ignition of compact metal halide lamps in the preferred embodiment are about 15-20 kV, in the worst case a fleece thickness dr reduced to 2.4 mm due to the lamp vessel tolerances is the occurrence of Breakthroughs avoided.
  • the ceramic fleece 19 avoids flashovers in air between the outer power supply lines 11, 12.
  • the base 14 presses against the irregularly shaped end 10 of the outer bulb 9, particularly against it the squeeze groove that often forms between the power supply lines during the squeezing process.
  • sliding spark discharges which preferably occur in the pinch groove, are prevented at the same time.
  • the elasticity is also important because of the problem of material expansion due to the high operating temperature.
  • Ceramic paper could not meet these requirements by far.
  • the invention is also suitable for other embodiments of the high-pressure discharge lamp.
  • the ignition properties of metal halide lamps without an outer bulb, in which the discharge vessel is directly socketed can also be improved by means of such an intermediate layer.
  • the invention is applicable on other types of high pressure discharge lamps, e.g. High pressure sodium discharge lamps, the invention is applicable.

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)
EP86118071A 1986-01-15 1986-12-24 Hochdruckentladungslampe und Verfahren zu ihrer Herstellung Expired EP0230051B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3600991 1986-01-15
DE19863600991 DE3600991A1 (de) 1986-01-15 1986-01-15 Hochdruckentladungslampe und verfahren zu ihrer herstellung

Publications (2)

Publication Number Publication Date
EP0230051A1 EP0230051A1 (de) 1987-07-29
EP0230051B1 true EP0230051B1 (de) 1989-06-21

Family

ID=6291890

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86118071A Expired EP0230051B1 (de) 1986-01-15 1986-12-24 Hochdruckentladungslampe und Verfahren zu ihrer Herstellung

Country Status (4)

Country Link
US (1) US4754195A (enrdf_load_stackoverflow)
EP (1) EP0230051B1 (enrdf_load_stackoverflow)
JP (1) JPS62170145A (enrdf_load_stackoverflow)
DE (2) DE3600991A1 (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD280630A1 (de) * 1989-03-14 1990-07-11 Narva Gluehlampen Einseitig gequetschte entladungslampe mit vergroesserter hochspannungsfestigkeit
GB8913798D0 (en) * 1989-06-15 1989-08-02 Emi Plc Thorn Arc tube for a high pressure discharge lamp
US6262534B1 (en) * 1998-11-12 2001-07-17 Philips Electronics North America Corp. Lamp having light source mounted directly to stem
KR102127688B1 (ko) * 2013-12-19 2020-06-29 어플라이드 머티어리얼스, 인코포레이티드 교체가능한 램프를 위한 어댑터

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3934067A (en) * 1974-07-17 1976-01-20 Western Electric Company, Inc. Laminar structure having an impregnated fibrous web
SE389426B (sv) * 1976-02-27 1976-11-01 Lumalampan Ab Tillsats till sockelkitt for elektriska glodlampor
CH637326A5 (en) * 1978-12-18 1983-07-29 Micafil Ag Laminated moulding for the insulation, subject to high mechanical and electrical loads, of electrical machines and apparatus
US4243907A (en) * 1979-07-05 1981-01-06 Gte Products Corporation Lamp having reduced width press-seal
JPS5717714U (enrdf_load_stackoverflow) * 1980-07-03 1982-01-29
CA1176687A (en) * 1981-06-06 1984-10-23 Robert Hall Bi pin base for single ended discharge lamp
US4570104A (en) * 1982-11-02 1986-02-11 U.S. Philips Corporation Electric lamp having a fuse in a feed-through molding
US4568854A (en) * 1983-10-27 1986-02-04 Gte Products Corporation Tungsten halogen lamp with heat-dissipating base
JPS60124346A (ja) * 1983-12-09 1985-07-03 Mitsubishi Electric Corp 金属蒸気放電灯
DD227823A1 (de) * 1984-04-24 1985-09-25 Sprela Werke Spremberg Veb Flammwidrige elektroisolier-schichtpressstoffe
US4631446A (en) * 1984-05-04 1986-12-23 Gte Products Corporation Single-ended high intensity discharge lamp
DE3425894A1 (de) * 1984-07-13 1986-01-23 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Elektrische lampe

Also Published As

Publication number Publication date
EP0230051A1 (de) 1987-07-29
JPH0551141B2 (enrdf_load_stackoverflow) 1993-07-30
DE3600991A1 (de) 1987-07-16
DE3664080D1 (en) 1989-07-27
JPS62170145A (ja) 1987-07-27
US4754195A (en) 1988-06-28

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