EP0230051A1 - Lampe à décharge à haute pression et procédé pour sa fabrication - Google Patents

Lampe à décharge à haute pression et procédé pour sa fabrication Download PDF

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Publication number
EP0230051A1
EP0230051A1 EP86118071A EP86118071A EP0230051A1 EP 0230051 A1 EP0230051 A1 EP 0230051A1 EP 86118071 A EP86118071 A EP 86118071A EP 86118071 A EP86118071 A EP 86118071A EP 0230051 A1 EP0230051 A1 EP 0230051A1
Authority
EP
European Patent Office
Prior art keywords
base
lamp vessel
lamp
pressure discharge
vessel
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
EP86118071A
Other languages
German (de)
English (en)
Other versions
EP0230051B1 (fr
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/fr
Application granted granted Critical
Publication of EP0230051B1 publication Critical patent/EP0230051B1/fr
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.
  • the invention has for its object to prevent flashovers in the base area.
  • it is an object of the invention to avoid flashovers in air as well as sliding spark discharges directly on the lamp vessel between the current leads in a simple and inexpensive manner.
  • a high-pressure discharge lamp according to the preamble of claim 1 in that there is an intermediate layer between the lamp vessel and the base, which consists of a material of high temperature and dielectric strength, and which at least in the area between the two power supplies both on Lamp vessel fits tightly and also completely fills the space between the bottom of the receptacle of the base and the base-side end of the lamp vessel.
  • a fibrous web is used as an intermediate layer, ceramic fibers being preferred as the material.
  • 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 melted into the pinch in a vacuum-tight manner by means of foils.
  • 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 produce the electrical connection between the electrode shafts 5, 6 of the discharge vessel and the external power supply lines 11, 12 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 to reduced to 1.1 mm, resulting in a dielectric strength of 26 kV.
  • dielectric strength U D and reduced fleece thickness d r as a function of contact pressure K is shown in the table. Knowing this relationship is important because the squeezing process requires an irregular shape of the end 10 of the outer bulb. Due to the inevitable tolerances in the length of the lamp vessel, tolerances in the reduced fleece thickness of the order of 100% occur, while maintaining the setting dimension, corresponding to a fleece thickness d r of more than 2 mm.
  • the ignition voltages for the hot re-ignition of compact metal halide lamps in the preferred embodiment are approximately 15-20 kV, in the worst case a fleece thickness d r reduced to 2.4 mm due to the lamp vessel tolerances occurs of punctures avoided.
  • the ceramic fleece 19 prevents 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, in particular on the pinch groove that often forms between the power supply lines during the pinching process.
  • sliding spark discharges which preferably occur just in the pinch groove, are prevented.
  • 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 mounted 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 Lampe à décharge à haute pression et procédé pour sa fabrication Expired EP0230051B1 (fr)

Applications Claiming Priority (2)

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

Publications (2)

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

Family

ID=6291890

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86118071A Expired EP0230051B1 (fr) 1986-01-15 1986-12-24 Lampe à décharge à haute pression et procédé pour sa fabrication

Country Status (4)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0403211A2 (fr) * 1989-06-15 1990-12-19 THORN EMI plc Tube à arc pour lampe à décharge à haute pression
GB2232812A (en) * 1989-03-14 1990-12-19 Narva Veb Leads for a discharge lamp

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6262534B1 (en) 1998-11-12 2001-07-17 Philips Electronics North America Corp. Lamp having light source mounted directly to stem
CN106133888B (zh) * 2013-12-19 2019-10-01 应用材料公司 用于可替换的灯的适配器

Citations (5)

* 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
DE2901890A1 (de) * 1978-12-18 1980-07-17 Micafil Ag Schichtpresstoff-formteil
US4243907A (en) * 1979-07-05 1981-01-06 Gte Products Corporation Lamp having reduced width press-seal
DD227823A1 (de) * 1984-04-24 1985-09-25 Sprela Werke Spremberg Veb Flammwidrige elektroisolier-schichtpressstoffe
EP0160316A2 (fr) * 1984-05-04 1985-11-06 GTE Products Corporation Lampe à décharge à haute intensité et à bout unique et fabrication

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE389426B (sv) * 1976-02-27 1976-11-01 Lumalampan Ab Tillsats till sockelkitt for elektriska glodlampor
JPS5717714U (fr) * 1980-07-03 1982-01-29
CA1176687A (fr) * 1981-06-06 1984-10-23 Robert Hall Culot a deux broches pour lampe a decharge monoculot
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
DE3425894A1 (de) * 1984-07-13 1986-01-23 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München Elektrische lampe

Patent Citations (5)

* 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
DE2901890A1 (de) * 1978-12-18 1980-07-17 Micafil Ag Schichtpresstoff-formteil
US4243907A (en) * 1979-07-05 1981-01-06 Gte Products Corporation Lamp having reduced width press-seal
DD227823A1 (de) * 1984-04-24 1985-09-25 Sprela Werke Spremberg Veb Flammwidrige elektroisolier-schichtpressstoffe
EP0160316A2 (fr) * 1984-05-04 1985-11-06 GTE Products Corporation Lampe à décharge à haute intensité et à bout unique et fabrication

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, unexamined applications, E Sektion, Band 9, Nr. 280, 8.November 1985 THE PATENT OFFICE JAPANESE GOVERNMENT Seite 129 E 356 & JP-A-60-124 346 (mitsubishi denki) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2232812A (en) * 1989-03-14 1990-12-19 Narva Veb Leads for a discharge lamp
EP0403211A2 (fr) * 1989-06-15 1990-12-19 THORN EMI plc Tube à arc pour lampe à décharge à haute pression
EP0403211A3 (fr) * 1989-06-15 1991-07-10 THORN EMI plc Tube à arc pour lampe à décharge à haute pression

Also Published As

Publication number Publication date
JPS62170145A (ja) 1987-07-27
JPH0551141B2 (fr) 1993-07-30
DE3600991A1 (de) 1987-07-16
US4754195A (en) 1988-06-28
DE3664080D1 (en) 1989-07-27
EP0230051B1 (fr) 1989-06-21

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