EP0034113A1 - Lampe à décharge électrique - Google Patents

Lampe à décharge électrique Download PDF

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Publication number
EP0034113A1
EP0034113A1 EP81730009A EP81730009A EP0034113A1 EP 0034113 A1 EP0034113 A1 EP 0034113A1 EP 81730009 A EP81730009 A EP 81730009A EP 81730009 A EP81730009 A EP 81730009A EP 0034113 A1 EP0034113 A1 EP 0034113A1
Authority
EP
European Patent Office
Prior art keywords
ceramic
current
electric discharge
discharge lamp
filaments
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
EP81730009A
Other languages
German (de)
English (en)
Other versions
EP0034113B1 (fr
Inventor
Béla Dr. Dipl.Ing. Kerekes
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.)
Egyesuelt Izzolampa es Villamossagi Rt
Original Assignee
Egyesuelt Izzolampa es Villamossagi Rt
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 Egyesuelt Izzolampa es Villamossagi Rt filed Critical Egyesuelt Izzolampa es Villamossagi Rt
Publication of EP0034113A1 publication Critical patent/EP0034113A1/fr
Application granted granted Critical
Publication of EP0034113B1 publication Critical patent/EP0034113B1/fr
Expired 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
    • H01J61/36—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors

Definitions

  • the invention relates to an electric discharge lamp with a ceramic discharge tube, which has a ceramic closing element, through which two or more current leads consisting of elementary thread, expediently made of wires are passed, and where another elementary conductor, expediently a wire is designed as an auxiliary electrode.
  • a disadvantage of the solution according to US Pat. No. 3,363,134 is that a tubular current feeder does not eliminate the dilation effect which occurs as a result of the thermal shock, but only reduces it.
  • Another disadvantage is that the use of a niobium tube increases the cost of the lamp in such a way that its cost-effectiveness can no longer be guaranteed, because the price of a tube is at least a hundred times that of a wire of the same weight. The solution is therefore not only technically but also economically disadvantageous.
  • the aim of the invention is to eliminate the disadvantages mentioned above and to provide a design which, in the case of high-power lamps, even with a larger cross section of the power lines, eliminates the harmful dilatation effects caused by thermal shock, and which in practice offers an easily implementable solution, and furthermore economically , simple, and reliable.
  • the invention is based on the finding that the harmful dilatation effects which, when the cross-section of the current leads led through the ceramic sealing element and soldered into it in a vacuum-tight manner - caused by the increase in the power of the lamp - cause cracks in the soldered connection and even in the ceramic sealing element only thereby eliminated if the larger cross-section falls on several separate elementary threads, moderately distributed from niobium wire by using several elementary wires.
  • the current feeder according to the invention is thus designed such that the elementary thread soldered into the closing element and passing through it are short-circuited electrically and also in a heat-conducting manner on both sides of the closing element, and that if necessary a further elementary thread, expediently a niobium wire, is designed as an auxiliary electrode.
  • the elementary thread, expediently niobium wires, are intertwined outside of the discharge space.
  • FIG. 1 shows a discharge lamp designed according to the invention as an example, which contains a ceramic discharge tube 3 in a glass bulb 4 provided with a lamp cover 7, filled or evacuated with an inert gas, the two ends of which are closed by a terminating element 8 made of ceramic.
  • electrodes 11 are provided at both ends, to which the current supply line is provided by current leads 9 made of filaments 10, expediently of niobium wires, which are individually vacuum-tightly passed through the terminating members 8 and are interwoven or twisted outside the discharge tube.
  • a current supply bracket 1 and a longer holder 2 supported in the glass bulb 4 by a support ring 12 serve at one end of the ceramic discharge tube 3 a current supply bracket 1 and a longer holder 2 supported in the glass bulb 4 by a support ring 12, and at the other end of the discharge tube a current supply bracket 6 welded or soldered to a shorter holder 5.
  • FIG. 2 one end of an electric discharge lamp with a ceramic discharge tube 3 according to the invention is shown in detail as an exemplary embodiment.
  • the ceramic discharge tube 3 closing ceramic 8 are made of four elementary threads 10 made of niobium wire current leads 9 are passed, two threads of which are connected to the electrode 11 in the discharge space, both electrically and thermally conductive on its U-shaped bent part.
  • the four elementary threads 10 protruding from the discharge space are twisted together and form a rigid arrangement in terms of strength.
  • the embodiment according to FIG. 2 is produced as follows:
  • the inner diameter of the ceramic discharge tube is 3 8 mm
  • the diameter of the niobium wire used is 0.5 mm
  • the core diameter of the tungsten electrode is 1.2 mm.
  • each piece of filaments 10 which are expediently made of niobium wire, are passed through the ceramic terminating element 8, which closes the ceramic discharge tube 3.
  • two filaments 10 are electrically short-circuited within the discharge space, and bent in a U-shape, in such a way that one filament 10, which is bent in a U-shape and expediently made of niobium, with the electrode 11, and the other also U- shaped element thread 10 is electrically connected to an auxiliary electrode 13.
  • the free ends of the filaments 10 protruding from the discharge space are twisted in pairs outside the discharge space, and they serve as current leads 9a and 9.
  • the power supply 9 is made from three pieces of filaments 10, which are led through the ceramic terminating element 8, which closes the ceramic discharge tube 3. These are expediently made of niobium wire, in such a way that the three pieces of filaments 10 are connected to the electrode 11 at their ends projecting into the discharge space. The ends of the three filaments 10 protruding from the discharge space are twisted together outside the discharge space.
  • the invention is in no way limited to the exemplary embodiments just described.
  • the invention can also be carried out in such a way that only two, or no, several filaments, which suitably consist of job wire, are passed through the ceramic termination element and thus form the electrical power supply for the lampo, and this can be realized in numerous possible variations. This is possible in particular because the number of filaments and the dimensions of these filaments are closely related to the power of the electric discharge lamp and are extremely variable.
  • the power supply can consist of two, three, four, five, etc. filaments depending on the power of the lamp and can be of any shape.
  • the arrangement of the filaments that form the current supply is indifferent in the ceramic terminating element. It is only important that the filaments are soldered separately from one another into the ceramic terminating element, apart from their arrangement. The centering of the electrodes, the support of them, and their welding are facilitated if even-numbered i.e. two or four uses each. Elementary threads are used. If you want to use one or more of the filaments as a power supply for an auxiliary electrode, the use of odd numbers of threads is more advantageous in this case. In the latter case, in the sense of the invention, as described above, the power supply for the main electrode can be formed from at least two or more filaments. The diameter of the filaments forming the current supply and the profile thereof can be chosen freely within the limits mentioned.
  • the filament in the discharge space which is connected to the electrode, can not only be U-shaped, but other shapes can also be used.
  • individual, separately standing filaments in the transverse direction expediently welded to a straight plate, and in this way combined electrically and thermally.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
EP81730009A 1980-02-11 1981-01-23 Lampe à décharge électrique Expired EP0034113B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HU8080304A HU178836B (en) 1980-02-11 1980-02-11 Electric discharge lamp of ceramic bulb
HUEY000304 1980-02-11

Publications (2)

Publication Number Publication Date
EP0034113A1 true EP0034113A1 (fr) 1981-08-19
EP0034113B1 EP0034113B1 (fr) 1984-12-05

Family

ID=10949005

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81730009A Expired EP0034113B1 (fr) 1980-02-11 1981-01-23 Lampe à décharge électrique

Country Status (12)

Country Link
US (1) US4376905A (fr)
EP (1) EP0034113B1 (fr)
JP (1) JPS56128561A (fr)
AR (1) AR223093A1 (fr)
BR (1) BR8100689A (fr)
DD (1) DD156209A1 (fr)
DE (1) DE3167525D1 (fr)
ES (1) ES8202185A1 (fr)
HU (1) HU178836B (fr)
IN (1) IN154885B (fr)
SU (1) SU1138057A3 (fr)
ZA (1) ZA81274B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0181223A2 (fr) * 1984-11-09 1986-05-14 Ngk Insulators, Ltd. Ampoule en céramique pour lampe à décharge à haute pression
US5352952A (en) * 1991-10-11 1994-10-04 Patent-Treuhand-Gesellschaft F. Elektrische Gluehlampen Mbh High-pressure discharge lamp with ceramic discharge vessel
US5446341A (en) * 1992-06-10 1995-08-29 Patent-Treuhand-Gesellschaft F. Elektrische Gluehlampen Mbh High-pressure electric discharge lamp with tight lead-through pin electrode connection and method of its manufacture

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU181782B (en) * 1981-01-09 1983-11-28 Egyesuelt Izzolampa Discharge vessel for high-pressure sodium-vapour discharge lamps
HU182834B (en) * 1982-02-25 1984-03-28 Egyesuelt Izzolampa Electric current lead-in, preferably for discharge vessel of high-pressure gas-discharge light-sources
DE4242122A1 (de) * 1992-12-14 1994-06-16 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Verfahren zur Herstellung einer vakuumdichten Abdichtung zwischen einem keramischen und einem metallischen Partner, insbesondere zur Anwendung bei der Herstellung eines Entladungsgefäßes für eine Lampe, sowie damit hergestellte Entladungsgefäße und Lampen
DE4242123A1 (de) * 1992-12-14 1994-06-16 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Hochdruckentladungslampe mit einem keramischen Entladungsgefäß
WO2005122214A1 (fr) * 2004-06-08 2005-12-22 Ngk Insulators, Ltd. Appareil émetteur de lumière et appareil émetteur de lumière pour une lampe de déchargement haute pression
US7521870B2 (en) 2004-06-08 2009-04-21 Ngk Insulators, Ltd. Luminous containers and those for high pressure discharge lamps
US7288303B2 (en) 2004-06-08 2007-10-30 Ngk Insulators, Ltd. Structures of brittle materials and metals

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2329118A (en) * 1941-07-12 1943-09-07 Gen Electric Electrode for electrical discharge devices
US2452626A (en) * 1945-03-03 1948-11-02 Gen Electric X Ray Corp Electron emitter
US3992642A (en) * 1975-12-15 1976-11-16 Mcvey Charles I Ceramic envelope plug and lead wire and seal
DE2909771A1 (de) * 1978-03-15 1979-09-20 Philips Nv Elektrische lampe

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4295075A (en) * 1979-12-14 1981-10-13 Gte Products Corporation Arc discharge lamp having ceramic arc tube

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2329118A (en) * 1941-07-12 1943-09-07 Gen Electric Electrode for electrical discharge devices
US2452626A (en) * 1945-03-03 1948-11-02 Gen Electric X Ray Corp Electron emitter
US3992642A (en) * 1975-12-15 1976-11-16 Mcvey Charles I Ceramic envelope plug and lead wire and seal
DE2909771A1 (de) * 1978-03-15 1979-09-20 Philips Nv Elektrische lampe

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0181223A2 (fr) * 1984-11-09 1986-05-14 Ngk Insulators, Ltd. Ampoule en céramique pour lampe à décharge à haute pression
EP0181223A3 (en) * 1984-11-09 1988-07-06 Ngk Insulators, Ltd. Ceramic envelope device for high-pressure discharge lamp
US5352952A (en) * 1991-10-11 1994-10-04 Patent-Treuhand-Gesellschaft F. Elektrische Gluehlampen Mbh High-pressure discharge lamp with ceramic discharge vessel
US5484315A (en) * 1991-10-11 1996-01-16 Patent-Treuhand-Gesellschaft F. Elektrische Gluehlampen Mbh Method for producing a metal-halide discharge lamp with a ceramic discharge vessel
US5446341A (en) * 1992-06-10 1995-08-29 Patent-Treuhand-Gesellschaft F. Elektrische Gluehlampen Mbh High-pressure electric discharge lamp with tight lead-through pin electrode connection and method of its manufacture

Also Published As

Publication number Publication date
HU178836B (en) 1982-07-28
IN154885B (fr) 1984-12-22
EP0034113B1 (fr) 1984-12-05
BR8100689A (pt) 1981-08-18
ZA81274B (en) 1982-04-28
ES499273A0 (es) 1982-01-16
SU1138057A3 (ru) 1985-01-30
DD156209A1 (de) 1982-08-04
JPS56128561A (en) 1981-10-08
DE3167525D1 (en) 1985-01-17
JPH0255905B2 (fr) 1990-11-28
US4376905A (en) 1983-03-15
ES8202185A1 (es) 1982-01-16
AR223093A1 (es) 1981-07-15

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