WO2008049742A2 - Lampe à décharge haute pression - Google Patents

Lampe à décharge haute pression Download PDF

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Publication number
WO2008049742A2
WO2008049742A2 PCT/EP2007/060890 EP2007060890W WO2008049742A2 WO 2008049742 A2 WO2008049742 A2 WO 2008049742A2 EP 2007060890 W EP2007060890 W EP 2007060890W WO 2008049742 A2 WO2008049742 A2 WO 2008049742A2
Authority
WO
WIPO (PCT)
Prior art keywords
discharge lamp
pressure discharge
bushing
corrosion
lamp according
Prior art date
Application number
PCT/EP2007/060890
Other languages
German (de)
English (en)
Other versions
WO2008049742A3 (fr
Inventor
Oliver Apel
Thomas Degenhard
Martin Fornalski
Jürgen KELLERER
Stephan Thomas
Original Assignee
Osram Gesellschaft mit beschränkter Haftung
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 Osram Gesellschaft mit beschränkter Haftung filed Critical Osram Gesellschaft mit beschränkter Haftung
Priority to JP2009600033U priority Critical patent/JP3157181U/ja
Publication of WO2008049742A2 publication Critical patent/WO2008049742A2/fr
Publication of WO2008049742A3 publication Critical patent/WO2008049742A3/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/36—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/302—Vessels; Containers characterised by the material of 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
    • H01J61/30—Vessels; Containers
    • H01J61/34—Double-wall vessels or containers
    • 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
    • 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

Definitions

  • the invention is based on a high-pressure discharge lamp according to the preamble of claim 1.
  • EP 1 111 654 and EP 415 398 a high-pressure discharge lamp is known in which a ceramic discharge vessel is taken in an outer shell ⁇ .
  • an inert gas in order to prevent corrosion of the power supply lines and of the lamp frame (often made of niobium material) which supports the discharge vessel.
  • This requires a gas-tight Cover B ⁇ ckung the envelope.
  • an outer bulb or reflector must be sealed gas-tight, in particular, a reflector with a cover be sealed gas-tight.
  • the object of the present invention is to operate a high-pressure discharge lamp with a ceramic discharge vessel in air, in particular open or in a non-gas-tight outer envelope.
  • the invention enables the operation of Ke ⁇ ramikbrennern of high pressure discharge lamps in air overall filled outer bulb or other outer shell, such as a reflector, which need not be gastight.
  • the electrode system of the discharge vessel is in contrast to the previously known two-part electrode system of electrode, usually tungsten, and implementation, which is often made of two parts molybdenum pin with Geweckkel and niobium pin, now of three parts, namely electrode, usually made of tungsten , and implementation, which is often in two parts of molybdenum pin with winding and niobium pin, additionally a corrosion-resistant end part, preferably a molybdenum pin together.
  • This three-piece electrode system is used to operate a ceramic discharge vessel in air.
  • the electrode system can preferably be provided in the region of the leadthrough part, in particular of the niobium pin, for fixation in the capillary before the melting process with a fixation, in particular a pinch or scraping.
  • This fixation determines the electrode spacing in connection with the capillary length. Since the capillary length of the ceramic can be made very accurately, the point of fixation is always the same.
  • a corrosion-resistant end part such as a molybdenum pin is welded to the previously used electrode system.
  • the glass solder used to close the burner advantageously serves to simultaneously protect the non-corrosion-resistant leadthrough part, such as a niobium pin, and surrounds it fully ⁇ constantly.
  • the non-corrosion-resistant leadthrough part such as a niobium pin
  • the extent to which the glass solder flows up can be controlled by the A ⁇ melting parameters (power, execution of the process chamber, etc.).
  • the corrosion-resistant end portion, in particular a corrosion-resistant molybdenum pin then serves for contacting the burner to the power supply or the lamp frame outside the Entla ⁇ -making vessel.
  • the ceramic discharge vessel is preferably made of Al 2 O 3 , for example PCA or also sapphire or AlN. It is closed on one or two sides.
  • Applicable fusing methods are laser, radio frequency or resistive fusing, as is known per se.
  • the fixation of the electrode system can take place in per se be ⁇ known shape and is of importance for the invention only in so far as they should be as space-saving. In this case, a solution is preferred as a pinch -A-
  • Figure 1 is a ceramic discharge vessel, which is closed on two sides.
  • FIG. 3 shows a lamp with outer bulb.
  • Fig. 4 is a reflector lamp with not closed off ⁇ outlet opening.
  • a discharge vessel 1 which is made of Al 2 O 3 . It has a bulbous or cylindrical discharge volume 2 and two elongated ends, which are designed as a capillary 3.
  • each an electrode system is sealed. It consists of an electrode 4 made of tungsten, a bushing, which is here composed of two parts of a front leadthrough part 5 made of molybdenum, a rear leadthrough part, here a niobium pin 6, and ei ⁇ nem corrosion-resistant end portion, here a molybdenum pin 7, respectively connected to each other are, in particular, butt-welded together, for example.
  • the lead-through part fills most of the length of the capillary, preferably at least 60%, and at most 90%.
  • the niobium pin 7 is mounted so that it protrudes both into the capillary and protrudes at the end of the capillary. He should preferably project at least 2 mm into the capillary and survive at least 0.3 mm. A typical value is 3 mm insertion depth and 0.5 to 1 mm overhang on the outside. A typi ⁇ shear diameter of the guide portion is 0.7 mm.
  • FIG. 2 shows a further exemplary embodiment of a discharge vessel 12 made of ceramic closed on one side.
  • a multi-part implementation is similar to that used for Figure 1.
  • the passages are arranged in two ka ⁇ pillaren 3, which are led out parallel to each other from one end of the discharge vessel. They are composed of two parts 5 and 6.
  • the electrode system is plettiert ⁇ com- by an electrode 4 and an end portion. 7
  • FIG. 3 shows a metal halide lamp 20 with an enveloping bulb 22 and a screw base 12.
  • the discharge vessel made of PCA is accommodated in an outer bulb 21.
  • the outer bulb 21 is filled with air, the electrode system is similar to that in FIG. 1. Typical fillings for such lamps are described in EP 587 238.
  • FIG. 4 shows a reflector lamp 25 with a screw base
  • the ceramic discharge vessel 1 which is a
  • a reflector 26 Contains metal halide, housed in a reflector 26 as a sheath.
  • the lamp is operated in air ben. Therefore, the reflector need not be sealed gas-tight, so he can do without a cover on the off ⁇ exit opening 27 of the reflector.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

L'invention concerne une lampe à décharge haute pression comportant une ampoule à décharge en céramique logée dans une enveloppe externe, deux électrodes sortant de l'ampoule à décharge à deux ouvertures de type orifices au moyen d'un système d'électrodes. Le système d'électrodes en quatre parties comprend, outre une électrode en tungstène, un conduit composé d'au moins deux parties, une première partie en molybdène, intégralement logée dans l'ouverture, et une deuxième partie en niobium pénétrant partiellement dans l'ouverture et se trouvant partiellement en saillie, un verre de soudure couvrant intégralement la partie en saillie externe et une autre partie en molybdène se trouvant dans le prolongement extérieur de la partie en niobium.
PCT/EP2007/060890 2006-10-23 2007-10-12 Lampe à décharge haute pression WO2008049742A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009600033U JP3157181U (ja) 2006-10-23 2007-10-12 高圧放電ランプ

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202006016189.9 2006-10-23
DE200620016189 DE202006016189U1 (de) 2006-10-23 2006-10-23 Hochdruckentladungslampe

Publications (2)

Publication Number Publication Date
WO2008049742A2 true WO2008049742A2 (fr) 2008-05-02
WO2008049742A3 WO2008049742A3 (fr) 2008-06-19

Family

ID=37697718

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/060890 WO2008049742A2 (fr) 2006-10-23 2007-10-12 Lampe à décharge haute pression

Country Status (4)

Country Link
JP (1) JP3157181U (fr)
CN (1) CN201352546Y (fr)
DE (1) DE202006016189U1 (fr)
WO (1) WO2008049742A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009139978A2 (fr) * 2008-05-15 2009-11-19 Osram Sylvania, Inc. Lampe à décharge en céramique avec brûleur et réflecteur intégrés
US9013103B2 (en) 2011-08-01 2015-04-21 Osram Gmbh High-pressure discharge lamp having a starting aid

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202007007774U1 (de) * 2007-06-01 2008-07-03 Osram Gesellschaft mit beschränkter Haftung Hochdruckentladungslampe
DE102011077487A1 (de) 2011-06-14 2012-12-20 Osram Ag Hochdruckentladungslampe mit Zündhilfe

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0887837A2 (fr) * 1997-06-27 1998-12-30 Osram Sylvania Inc. Ampoule céramique, lampe munie d'une telle ampoule, et procédé de fabrication de tels dispositifs
WO2002091431A2 (fr) * 2001-05-08 2002-11-14 Koninklijke Philips Electronics N.V. Lampe en halogenure metallise en ceramique
DE202004013922U1 (de) * 2004-09-07 2004-11-18 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Metallhalogenidlampe mit keramischem Entladungsgefäß
EP1713112A2 (fr) * 2005-04-11 2006-10-18 Osram Sylvania Inc. Lampe à haute intensité aux halogénures métalliques ayant une bonne consistance de couleurs en variant l'intensité lumineuse

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0887837A2 (fr) * 1997-06-27 1998-12-30 Osram Sylvania Inc. Ampoule céramique, lampe munie d'une telle ampoule, et procédé de fabrication de tels dispositifs
WO2002091431A2 (fr) * 2001-05-08 2002-11-14 Koninklijke Philips Electronics N.V. Lampe en halogenure metallise en ceramique
DE202004013922U1 (de) * 2004-09-07 2004-11-18 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Metallhalogenidlampe mit keramischem Entladungsgefäß
EP1713112A2 (fr) * 2005-04-11 2006-10-18 Osram Sylvania Inc. Lampe à haute intensité aux halogénures métalliques ayant une bonne consistance de couleurs en variant l'intensité lumineuse

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009139978A2 (fr) * 2008-05-15 2009-11-19 Osram Sylvania, Inc. Lampe à décharge en céramique avec brûleur et réflecteur intégrés
WO2009139978A3 (fr) * 2008-05-15 2010-09-16 Osram Sylvania, Inc. Lampe à décharge en céramique avec brûleur et réflecteur intégrés
US8247972B2 (en) 2008-05-15 2012-08-21 Osram Sylvania Inc. Ceramic discharge lamp with integral burner and reflector
US9013103B2 (en) 2011-08-01 2015-04-21 Osram Gmbh High-pressure discharge lamp having a starting aid

Also Published As

Publication number Publication date
DE202006016189U1 (de) 2007-01-18
JP3157181U (ja) 2010-02-04
WO2008049742A3 (fr) 2008-06-19
CN201352546Y (zh) 2009-11-25

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