EP1357580A2 - Lampe à décharge à basse pression avec dispositif d'extinction en fin de vie - Google Patents

Lampe à décharge à basse pression avec dispositif d'extinction en fin de vie Download PDF

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Publication number
EP1357580A2
EP1357580A2 EP03009249A EP03009249A EP1357580A2 EP 1357580 A2 EP1357580 A2 EP 1357580A2 EP 03009249 A EP03009249 A EP 03009249A EP 03009249 A EP03009249 A EP 03009249A EP 1357580 A2 EP1357580 A2 EP 1357580A2
Authority
EP
European Patent Office
Prior art keywords
paste
discharge lamp
pressure discharge
pearl
low
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
EP03009249A
Other languages
German (de)
English (en)
Other versions
EP1357580A3 (fr
EP1357580B1 (fr
Inventor
Bernhard Blohm
Kirsten Fuchs
Achim Dr. Hilscher
Peter Husslein
Gerald Hämmer
Andreas Maciejewski
Thomas Dr. Noll
Klaus Pankratz
Klaus Weingärtner
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 EP1357580A2 publication Critical patent/EP1357580A2/fr
Publication of EP1357580A3 publication Critical patent/EP1357580A3/fr
Application granted granted Critical
Publication of EP1357580B1 publication Critical patent/EP1357580B1/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
    • H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/54—Supports for the arms
    • A47C7/541—Supports for the arms of adjustable type
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/03—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests
    • A47C1/0307—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests adjustable rectilinearly in horizontal direction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/24—Means for obtaining or maintaining the desired pressure within the vessel
    • H01J61/28—Means for producing, introducing, or replenishing gas or vapour during operation of the lamp

Definitions

  • the invention relates to a low-pressure discharge lamp with a tubular Discharge vessel made of glass, the free ends of which are sealed gas-tight are, with two electrode systems, each with a coil, two power supplies and a pearl made of glass, the power supplies with their Ends in the gas-tight sealed ends of the discharge vessel and for holding in an area between the filament and the discharge vessel melt are melted into the pearl and with a device to switch off the lamp at the end of its life consisting of a paste that contains a metal hydride and is attached to the pearl.
  • Such a low-pressure discharge lamp is known from European patent EP 0 727 809 known.
  • the lamp goes into a cold cathode operation, which is an increase the cathode drop voltage and thus a strong heating of the metal parts in the lamp.
  • the sharp rise in the temperature of the Metal parts lead to decay of the metal hydride in the paste, which in the radiation area the helix and with contact to the power supply lines on the Glass bead is attached.
  • the decay of the metal hydride in particular Titanium hydride is released and the discharge due to the increasing lamp lamp voltage extinguished.
  • the object of the invention is therefore a lamp with a device for switching off according to the low pressure discharge lamp at the end of its service life to provide the preamble of claim 1, due to early failures high spiral heating currents of the ballast can be prevented.
  • the paste with the metal hydride is according to the invention with respect to heat radiation emanating from the filament of the lamp during operation Radiant shadows applied to the pearl. This can cause heating the paste and thus the metal hydride through direct heat radiation prevented by the helix.
  • the paste is so on applied to the pearl, making no electrical contact with the power supply wires has. This will result in heat conduction from the power supply largely prevented in the paste.
  • the pearl therefore advantageously consists of a potassium barium silicate glass which has a specific electrical resistance of greater than or equal to 10 10 ⁇ cm at 350 ° C.
  • An electrical conduction of the pearl is optimally prevented up to the release temperature of the hydrogen at 400 ° C.
  • the glass bead advantageously has no spherical shape, but one circular cylindrical or cylindrical shape, the axis of which is transverse to the axis of the Discharge vessel is aligned in this area, the power supplies melted near the two ends of the circular cylindrical bead are and the paste with the metal hydride on the of the helix part of the pearl turned away in the radiation shadow of the coil is.
  • a mushroom-like shape is also advantageous, the cap of the mushroom being the Wendel is facing and the paste with the metal hydride is below the Cap is located in the radiation shadow of the coil. This will be optimal heating of the paste and thus of the metal hydride by the radiant heat prevented.
  • the circle should advantageously have a diameter d in mm, which obeys the following empirical formula: d> 0.2026 xm + 1.7617 with m ⁇ 2 mg where m is the amount of the metal hydride paste in mg. Otherwise, the required amount of paste cannot be applied safely in the shadow of the coil and without contact with the power supply.
  • the bead 8 has a length of 7 mm and a circle diameter of 4 mm.
  • the two power supplies 5, 6 are melted near the two ends of the pearl 8.
  • On the of the Helix 7 facing away from the lateral surface is a paste 9 from a Titanium hydride and a rheological additive applied, the body with the paste in the radiation shadow with respect to the coil 7.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Discharge Lamp (AREA)
EP03009249A 2002-04-26 2003-04-23 Lampe à décharge à basse pression avec dispositif d'extinction en fin de vie Expired - Lifetime EP1357580B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10218827A DE10218827A1 (de) 2002-04-26 2002-04-26 Niederdruckentladungslampe mit Abschaltvorrichtung am Lebensdauerende
DE10218827 2002-04-26

Publications (3)

Publication Number Publication Date
EP1357580A2 true EP1357580A2 (fr) 2003-10-29
EP1357580A3 EP1357580A3 (fr) 2005-04-27
EP1357580B1 EP1357580B1 (fr) 2006-06-28

Family

ID=28685313

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03009249A Expired - Lifetime EP1357580B1 (fr) 2002-04-26 2003-04-23 Lampe à décharge à basse pression avec dispositif d'extinction en fin de vie

Country Status (8)

Country Link
US (1) US6838813B2 (fr)
EP (1) EP1357580B1 (fr)
JP (1) JP2003317662A (fr)
KR (1) KR20030084778A (fr)
CN (1) CN1311511C (fr)
CA (1) CA2426915C (fr)
DE (2) DE10218827A1 (fr)
TW (1) TWI278895B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009132903A3 (fr) * 2008-04-29 2010-08-05 Osram Gesellschaft mit beschränkter Haftung Support d'électrode pour une lampe à décharge, procédé de production d'un support d'électrode et lampe à décharge

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006067718A2 (fr) * 2004-12-21 2006-06-29 Koninklijke Philips Electronics N.V. Lent a decharge a vapeur de mercure basse pression
DE102006052028A1 (de) * 2006-11-03 2008-05-08 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Niederdruckentladungslampe
JP5131468B2 (ja) * 2007-04-12 2013-01-30 株式会社ニコン 放電ランプ、光源装置、及び露光装置
CN101740306A (zh) * 2008-11-26 2010-06-16 奥斯兰姆有限公司 具有寿终保护的荧光灯管和自镇流荧光灯及其制造方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4495440A (en) * 1982-08-23 1985-01-22 Gte Products Corporation Arc-extinguishing ampul and fluorescent lamp having such ampul mounted on each electrode structure
EP0727809A2 (fr) * 1995-02-17 1996-08-21 Osram Sylvania Inc. Lampe fluorescente avec structure d'extinction d'arc en fin de vie
EP0755173A2 (fr) * 1995-07-18 1997-01-22 Osram Sylvania Inc. Lampe à décharge avec suppression d'arc en fin de vie utile

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5278473A (en) * 1990-04-16 1994-01-11 Gte Products Corporation Method of despensing mercury into arc dishcharge lamp having capsule coated with low ionization energy material
US5705887A (en) 1995-02-17 1998-01-06 Osram Sylvania Inc. Fluorescent lamp with end of life arc quenching structure
IN186954B (fr) * 1995-02-17 2001-12-22 Osram Sylvania Inc

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4495440A (en) * 1982-08-23 1985-01-22 Gte Products Corporation Arc-extinguishing ampul and fluorescent lamp having such ampul mounted on each electrode structure
EP0727809A2 (fr) * 1995-02-17 1996-08-21 Osram Sylvania Inc. Lampe fluorescente avec structure d'extinction d'arc en fin de vie
EP0755173A2 (fr) * 1995-07-18 1997-01-22 Osram Sylvania Inc. Lampe à décharge avec suppression d'arc en fin de vie utile

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009132903A3 (fr) * 2008-04-29 2010-08-05 Osram Gesellschaft mit beschränkter Haftung Support d'électrode pour une lampe à décharge, procédé de production d'un support d'électrode et lampe à décharge

Also Published As

Publication number Publication date
US6838813B2 (en) 2005-01-04
EP1357580A3 (fr) 2005-04-27
US20040012333A1 (en) 2004-01-22
CN1453819A (zh) 2003-11-05
CN1311511C (zh) 2007-04-18
CA2426915C (fr) 2011-06-14
DE50304020D1 (de) 2006-08-10
DE10218827A1 (de) 2003-11-06
TWI278895B (en) 2007-04-11
CA2426915A1 (fr) 2003-10-26
EP1357580B1 (fr) 2006-06-28
JP2003317662A (ja) 2003-11-07
KR20030084778A (ko) 2003-11-01
TW200307971A (en) 2003-12-16

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