EP0034113A1 - Lampe à décharge électrique - Google Patents
Lampe à décharge électrique Download PDFInfo
- 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
Links
- 239000000919 ceramic Substances 0.000 claims abstract description 47
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 15
- 239000010955 niobium Substances 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 5
- 239000004020 conductor Substances 0.000 abstract description 20
- 229910000679 solder Inorganic materials 0.000 abstract description 3
- 229910010293 ceramic material Inorganic materials 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 230000009931 harmful effect Effects 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 230000035939 shock Effects 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000005476 soldering Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011224 oxide ceramic Substances 0.000 description 1
- 229910052574 oxide ceramic Inorganic materials 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HUEY000304 | 1980-02-11 | ||
| HU8080304A HU178836B (en) | 1980-02-11 | 1980-02-11 | Electric discharge lamp of ceramic bulb |
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) | ES499273A0 (fr) |
| HU (1) | HU178836B (fr) |
| IN (1) | IN154885B (fr) |
| SU (1) | SU1138057A3 (fr) |
| ZA (1) | ZA81274B (fr) |
Cited By (3)
| 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)
| 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 |
| US7288303B2 (en) | 2004-06-08 | 2007-10-30 | Ngk Insulators, Ltd. | Structures of brittle materials and metals |
| 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 |
Citations (4)
| 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)
| 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 |
-
1980
- 1980-02-11 HU HU8080304A patent/HU178836B/hu unknown
-
1981
- 1981-01-15 ZA ZA00810274A patent/ZA81274B/xx unknown
- 1981-01-23 DE DE8181730009T patent/DE3167525D1/de not_active Expired
- 1981-01-23 EP EP81730009A patent/EP0034113B1/fr not_active Expired
- 1981-01-28 JP JP1148181A patent/JPS56128561A/ja active Granted
- 1981-02-02 IN IN117/CAL/81A patent/IN154885B/en unknown
- 1981-02-03 SU SU813238728A patent/SU1138057A3/ru active
- 1981-02-04 US US06/231,237 patent/US4376905A/en not_active Expired - Fee Related
- 1981-02-05 DD DD81227451A patent/DD156209A1/de unknown
- 1981-02-05 BR BR8100689A patent/BR8100689A/pt unknown
- 1981-02-10 AR AR284260A patent/AR223093A1/es active
- 1981-02-10 ES ES499273A patent/ES499273A0/es active Granted
Patent Citations (4)
| 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)
| 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 |
|---|---|
| DE3167525D1 (en) | 1985-01-17 |
| DD156209A1 (de) | 1982-08-04 |
| JPH0255905B2 (fr) | 1990-11-28 |
| ES8202185A1 (es) | 1982-01-16 |
| US4376905A (en) | 1983-03-15 |
| ZA81274B (en) | 1982-04-28 |
| EP0034113B1 (fr) | 1984-12-05 |
| HU178836B (en) | 1982-07-28 |
| AR223093A1 (es) | 1981-07-15 |
| BR8100689A (pt) | 1981-08-18 |
| JPS56128561A (en) | 1981-10-08 |
| SU1138057A3 (ru) | 1985-01-30 |
| ES499273A0 (es) | 1982-01-16 |
| IN154885B (fr) | 1984-12-22 |
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| Date | Code | Title | Description |
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