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EP0718869B1 - Lampe à décharge à basse pression - Google Patents

Lampe à décharge à basse pression Download PDF

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Publication number
EP0718869B1
EP0718869B1 EP95119041A EP95119041A EP0718869B1 EP 0718869 B1 EP0718869 B1 EP 0718869B1 EP 95119041 A EP95119041 A EP 95119041A EP 95119041 A EP95119041 A EP 95119041A EP 0718869 B1 EP0718869 B1 EP 0718869B1
Authority
EP
European Patent Office
Prior art keywords
amalgam
pressure discharge
glass
discharge lamp
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.)
Expired - Lifetime
Application number
EP95119041A
Other languages
German (de)
English (en)
Other versions
EP0718869A1 (fr
Inventor
Friedrich Lauter
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 EP0718869A1 publication Critical patent/EP0718869A1/fr
Application granted granted Critical
Publication of EP0718869B1 publication Critical patent/EP0718869B1/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
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes
    • H01J61/067—Main electrodes for low-pressure discharge lamps
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting

Definitions

  • the invention relates to a low-pressure discharge lamp according to the preamble of claim 1.
  • amalgam low-pressure discharge lamp With this type of lamp, the mercury filling component is within of the discharge vessel as an amalgam.
  • Such lamps have an operational amalgam and one or more so-called start-up amalgams.
  • the operational amalgam is usually on one Place inside the discharge vessel, which during the Lamp operation only a slightly fluctuating temperature between 90 ° C and 100 ° C.
  • the start-up amalgams are on hotter ones Establish as the operational amalgam and ensure, once done Ignition, the rapid start-up of the low-pressure discharge lamp shortly after the lamp was lit before the operational amalgam has reached its optimal temperature, mercury vapor for discharge provide.
  • Such a low-pressure discharge lamp which corresponds to the preamble of patent claim 1, is for example in the article "The mercury vapor pressure of indium amalgam and the luminous flux temperature curve of the new indium amalgam fluorescent lamps "from Hofmann & Rasch on pages 106-119 (especially pages 117-118) in the volume 11 of the "Technical-Scientific Treatises of the Osram Society” Springer Verlag 1973.
  • the lamp disclosed here has in addition to the operational or main amalgam, which is on the plate base of the plate tube melt is applied, two start-up or auxiliary amalgams.
  • the first start-up amalgam is on an electrode cap, in the immediate vicinity Near the electrode coil, attached while the second start-up amalgam is arranged in the area of the squeezed tube, in which the power supply lines for the electrode coil are squeezed in a gas-tight manner are.
  • the published PCT / US 92/10301 WO 93/11557 describes also one corresponding to the preamble of claim 1 Low pressure discharge lamp.
  • this lamp exists the electrode frame does not melt from a plate tube like that aforementioned indium amalgam fluorescent lamp, but essentially just from a glass rod that the electrode coil and their Power supply lines before and during the crushing of the discharge vessel ends stabilized.
  • the lamp disclosed here has one small ampoule filled with the start-up amalgam Power supply is held near the helix. This power supply is wrapped around the ampoule several times, like a heating coil and heats it up.
  • the aforementioned type of electrode rack and the tight squeezing of the discharge vessel ends over the Power supply is mainly used for compact fluorescent lamps applied while melting the plate tube more often encountered with rod-shaped T8, T10 and T12 fluorescent lamps.
  • the published patent application FR 2 438 912 describes a low-pressure discharge lamp with a carrier body containing amalgam.
  • the carrier body consists of a metal plate shaped in this way is that it forms a cavity in which the amalgam generator or the amalgam is arranged. The cavity communicates through a small opening with the discharge space of the low-pressure discharge lamp.
  • the carrier body for the amalgam is on the vitreous Plate tube melting of a lamp electrode with the help of a Adhesive or by means of a support wire near the lamp electrode attached.
  • the low-pressure discharge lamp according to the invention has a Carrier body for the start-up amalgam, which immediately in one to Glass body belonging to the electrode frame is melted or attached this has melted. For this, the carrier body is still in the pierced soft glass of the vitreous or on the vitreous glass. After the glass has cooled, the amalgam carrier body in simple and reliable
  • the carrier body can be on this Both in a plate tube base made of glass and in one attached the electrode frame stabilizing glass bead or glass rod become.
  • the carrier body for the amalgam is particularly advantageous a metal sheet or metal grid coated with an amalgam former.
  • a simple metal wire coated with amalgam former comes also as a carrier body in question.
  • the amalgam carrier body according to the invention can be placed so that the hottest part of the electrode rack located on the carrier body itself and thereby creeping of the amalgam generator in the direction of the electrode coil prevented becomes.
  • FIG. 1 A discharge vessel end of a low-pressure discharge lamp, in particular a compact fluorescent lamp, according to the first exemplary embodiment of the invention is shown schematically in FIG.
  • This lamp has a tubular discharge vessel 1 made of glass, which is sealed gas-tight at its ends by means of a pinch seal 2.
  • Two current leads 3, 4 for an electrode coil 5 arranged inside the discharge vessel 1 protrude from the pinch seal 2.
  • the two power supplies 3, 4 are each welded to one end of the electrode coil 5. Together with the electrode coil 5 and a glass bead 6, in which the current leads 3, 4 are melted, they form an electrode frame of the fluorescent lamp.
  • the glass bead 6 serves to fix the current leads 3, 4 connected to the electrode coil 5 during the production of the pinch seal 2.
  • the glass bead 6 there is also a metal sheet 7 coated with indium, e.g. B. iron sheet, melted by being inserted into the still soft glass of the pearl 6 about 0.3 mm deep.
  • the penetration position is selected such that the hottest point of the electrode frame is on the iron sheet 7 during lamp operation and thus prevents the indium from creeping in the direction of the electrode coil.
  • the metal sheet 7 can additionally be mechanically bent after the glass bead 6 has solidified.
  • the area of the metal sheet is approximately 2.5 ⁇ 7 mm 2 and its thickness is approximately 0.2 mm.
  • the mercury introduced into the low-pressure discharge lamp as a filling component forms indium amalgam with the indium on the metal sheet 7, which accelerates the start-up of the lamp and is therefore referred to as auxiliary or start-up amalgam.
  • FIG. 2 shows the unsocked discharge vessel end of a low-pressure discharge lamp according to a second exemplary embodiment of the invention.
  • This lamp has a tube-like discharge vessel 1 'made of glass, the ends of which are each sealed gas-tight by means of a plate tube melt 6'.
  • Two current leads 3 ', 4' protrude from the discharge vessel end, each of which is electrically conductively connected to one end of a spiral electrode 5 'arranged inside the discharge vessel 1'.
  • the plate tube melt 6 ' is a glass tube - called a plate tube - through which the current leads 3', 4 'and the pump stem 8' are threaded.
  • the upper end 6a 'of this plate tube 6' is tightly squeezed over the current leads 3 ', 4' and the pump stem 8 ', while the lower end 6b' is funnel-shaped to form a plate and is sealed gas-tight with the discharge vessel end.
  • the pinch seal 6a 'of the plate tube 6' forms, together with the current leads 3 ', 4' and the electrode coil 5 ', an electrode frame of the low-pressure discharge lamp.
  • an indium-coated metal sheet 7 ' is partially melted in the pinch seal area 6a' of the plate tube melt 6 'by being inserted into the glass of the plate tube 6a', which is not yet completely solid, about 0.3 mm deep.
  • this metal sheet are approximately 2.5 x 7 x 0.2 mm 3 .
  • the mercury introduced into the low-pressure discharge lamp as a filling component forms indium amalgam with the indium on the metal sheet 7 ′, which accelerates the start-up of the lamp.
  • the support body for the amalgam can be other sheets of high-melting metals are also used become. Also suitable as a support body instead of sheets also differently shaped metal bodies coated with an amalgam former, For example, metal grids or metal wires that run into the glass bead or are partially melted into the plate tube.
  • the size of the Carrier body is essentially only by the diameter of the Discharge vessel limited. In addition to indium come as amalgam formers other metals such as B. Cadmium in question. The size of the Carrier body and the layer thickness of the amalgam former on the carrier body and thus also the amount of amalgam form depends on the respective Lamp type.

Landscapes

  • Discharge Lamp (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Claims (3)

  1. Lampe à décharge à basse pression, comportant une enceinte (1;1') de décharge fermée de manière étanche au gaz, comportant un amalgame de mise en marche et comportant au moins deux supports d'électrode qui comportent chacun, outre un filament (5;5') d'électrode, aussi deux entrées (3,4;3',4') de courant reliées aux extrémités du filament et un élément (6;6') en verre dans lequel les entrées (3,4;3',4') de courant sont scellées ou pincées, l'amalgame de mise en marche étant disposé sur au moins un élément (7;7') de support, caractérisée en ce que l'élément (7;7') de support est un élément métallique revêtu d'un générateur d'amalgame du groupe : tôle métallique, toile métallique et fil métallique, une partie de cet élément (7;7') métallique étant enrobée et scellée dans l'un des éléments (6;6') en verre.
  2. Lampe à décharge à basse pression suivant la revendication 1, caractérisée en ce que les éléments en verre sont réalisés sous forme de perles (6) de verre ou de barreaux de verre, dans lesquels les entrées (3,4) de courant appartenant aux supports d'électrode associés sont scellées.
  3. Lampe à décharge à basse pression suivant la revendication 1, caractérisée en ce que les éléments en verre sont réalisés en scellement (6') à évasement, qui sont scellés aux extrémités de l'enceinte de décharge et qui la ferme de manière étanche au gaz.
EP95119041A 1994-12-20 1995-12-04 Lampe à décharge à basse pression Expired - Lifetime EP0718869B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4445532A DE4445532A1 (de) 1994-12-20 1994-12-20 Niederdruckentladungslampe
DE4445532 1994-12-20

Publications (2)

Publication Number Publication Date
EP0718869A1 EP0718869A1 (fr) 1996-06-26
EP0718869B1 true EP0718869B1 (fr) 1999-02-24

Family

ID=6536425

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95119041A Expired - Lifetime EP0718869B1 (fr) 1994-12-20 1995-12-04 Lampe à décharge à basse pression

Country Status (8)

Country Link
US (1) US5686788A (fr)
EP (1) EP0718869B1 (fr)
JP (1) JPH08236073A (fr)
KR (1) KR960026060A (fr)
CN (1) CN1132926A (fr)
CA (1) CA2162339A1 (fr)
DE (2) DE4445532A1 (fr)
HU (1) HU216848B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7952286B2 (en) 2006-11-03 2011-05-31 Osram Gesellschaft mit beschränkter Haftung Mercury source

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3199110B2 (ja) * 1997-12-05 2001-08-13 松下電器産業株式会社 蛍光ランプ
JP2007528097A (ja) * 2003-06-26 2007-10-04 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 低圧式水銀蒸気放電ランプ
US20060113788A1 (en) * 2004-11-30 2006-06-01 Laser Band, Llc. Laser printable business form having a self laminating wristband and a self laminating strip label
KR100801668B1 (ko) * 2006-10-27 2008-02-11 금호전기주식회사 형광램프
EP2197021A1 (fr) 2008-12-10 2010-06-16 Osram Gesellschaft mit Beschränkter Haftung Elément d'alimentation en courant pour une électrode et structure d'électrodes dotée d'au moins un tel élément de commande d'alimentation en courant
ITMI20082187A1 (it) * 2008-12-11 2010-06-12 Getters Spa Sistema dispensatore di mercurio per lampade a fluorescenza
DE102011006700A1 (de) * 2011-04-04 2012-10-04 Osram Ag Entladungslampe, insbesondere Quecksilber-Niederdruckentladungslampe, sowie Verfahren zum Herstellen einer Entladungslampe
ITMI20112111A1 (it) 2011-11-21 2013-05-22 Getters Spa Lampada contenente un'amalgama di partenza migliorata

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2115662A5 (fr) * 1970-11-27 1972-07-07 Fedorenko Anatoly
US3713201A (en) * 1971-05-14 1973-01-30 Westinghouse Electric Corp Method and apparatus for manufacturing mercury-vapor control assemblies for electric discharge devices
US3860852A (en) * 1974-04-04 1975-01-14 Gte Sylvania Inc Fluorescent lamp containing amalgam-forming material
DE2510379A1 (de) * 1975-03-10 1976-09-30 Patra Patent Treuhand Quecksilberdampfniederdruckentladungslampe mit amalgam
DE2616577A1 (de) * 1975-04-21 1976-11-04 Gte Sylvania Inc Niederdruck-quecksilberdampflampe
US4105910A (en) * 1976-04-23 1978-08-08 Westinghouse Electric Corp. Fluorescent lamp with an integral fail-safe and auxiliary-amalgam component
NL183687C (nl) * 1978-10-11 1988-12-16 Philips Nv Lagedrukkwikdampontladingslamp.
NL8105464A (nl) * 1981-12-04 1983-07-01 Philips Nv Werkwijze voor het vervaardigen van een lagedrukkwikdampontladingslamp.
JPS60133649A (ja) * 1983-12-21 1985-07-16 Toshiba Corp 低圧水銀蒸気放電灯
JPH04141940A (ja) * 1990-10-01 1992-05-15 Toshiba Lighting & Technol Corp 水銀蒸気放電灯およびその製造方法
US5274305A (en) * 1991-12-04 1993-12-28 Gte Products Corporation Low pressure mercury discharge lamp with thermostatic control of mercury vapor pressure
US5412288A (en) * 1993-12-15 1995-05-02 General Electric Company Amalgam support in an electrodeless fluorescent lamp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7952286B2 (en) 2006-11-03 2011-05-31 Osram Gesellschaft mit beschränkter Haftung Mercury source

Also Published As

Publication number Publication date
HU216848B (hu) 1999-09-28
DE59505144D1 (de) 1999-04-01
EP0718869A1 (fr) 1996-06-26
HUT73123A (en) 1996-06-28
JPH08236073A (ja) 1996-09-13
KR960026060A (ko) 1996-07-20
HU9503651D0 (en) 1996-02-28
DE4445532A1 (de) 1996-06-27
CN1132926A (zh) 1996-10-09
CA2162339A1 (fr) 1996-06-21
US5686788A (en) 1997-11-11

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