EP0034113B1 - Elektrische Entladungslampe - Google Patents
Elektrische Entladungslampe Download PDFInfo
- Publication number
- EP0034113B1 EP0034113B1 EP81730009A EP81730009A EP0034113B1 EP 0034113 B1 EP0034113 B1 EP 0034113B1 EP 81730009 A EP81730009 A EP 81730009A EP 81730009 A EP81730009 A EP 81730009A EP 0034113 B1 EP0034113 B1 EP 0034113B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ceramic
- wires
- discharge lamp
- electric discharge
- 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.)
- Expired
Links
- 239000000919 ceramic Substances 0.000 claims description 31
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 20
- 229910052758 niobium Inorganic materials 0.000 claims description 10
- 239000010955 niobium Substances 0.000 claims description 10
- 239000004020 conductor Substances 0.000 claims description 8
- 229910000679 solder Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 229910010293 ceramic material Inorganic materials 0.000 claims 1
- 238000007789 sealing Methods 0.000 description 4
- 230000008646 thermal stress Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 230000009931 harmful effect Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 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
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 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
- 230000035939 shock Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000005476 soldering Methods 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 an elongate discharge vessel made of ceramic and electrodes arranged at both ends in the discharge vessel according to the preamble of patent claim 1.
- Discharge lamps of this type are known from US Pat. Nos. 3,992,642 and 3,882,346, respectively.
- the power supply to the electrodes consists of a niobium wire, which is passed through the respective ceramic plate, in a vacuum-tight manner.
- Discharge lamps are also known in practice, in which the power supply consists of niobium tubes which are welded to niobium sealing caps which encompass the ends of the discharge vessel. In all of these cases, the conductor cross-section was determined by the specified line - i.e. H. of the current to be enforced - determined.
- the sealing caps were made of the same metal as the power supply leads, the heating of the power supply leads did not pose any problems because the coefficients of thermal expansion were the same.
- ceramic plates were used instead of the metal caps for the vacuum-tight sealing of the discharge vessel, the thermal stresses occurring due to the different coefficients of thermal expansion led to dilatation effects and ultimately to cracks in the area where the current conductors passed through the ceramic plates. With the formation of the power supply in the form of tubes - which have their own elasticity - the problems could not be reduced but not eliminated.
- the invention is therefore based on the object of designing the electric discharge lamp of the type mentioned at the outset in such a way that, even with necessarily larger power line cross sections, no harmful thermal stresses occur between the power supply and the discharge vessel or the ceramic plates sealing the discharge vessel.
- 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 lamp base 7, filled or evacuated with inert gas, the two ends of which are closed by end elements 8 made of ceramic.
- end elements 8 made of ceramic.
- electrodes 11 at both ends, to which the current supply line is provided by current leads 9 consisting of filaments 10, expediently of niobium wires, which are individually vacuum-tightly passed through the terminating members 8 and are braided or twisted outside the discharge tube.
- 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 end tube 3 terminating ceramic 8 are made of four elementary threads 10 made of niobium wire current leads 9, the two threads 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.
- filaments 10 which are expediently made of niobium wire, are passed through the ceramic terminating element 8, which closes off 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 -formally bent filament 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 line 9 is made from three pieces of filaments 10 which are passed through the ceramic terminating element 8, which closes off 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 described above.
- the invention can also be carried out in such a way that only two or more elementary threads, which expediently consist of niobium wire, are passed through the ceramic terminating element and thus form the electrical power supply for the lamp, this being able to 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 essential that the filaments are soldered separately into the ceramic terminating element, apart from the type of 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-numbered filaments 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 power supply and the profile thereof can be chosen freely within the limits mentioned. The wires can have a circular, triangular or square cross-section.
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
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 EP0034113A1 (de) | 1981-08-19 |
| EP0034113B1 true EP0034113B1 (de) | 1984-12-05 |
Family
ID=10949005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP81730009A Expired EP0034113B1 (de) | 1980-02-11 | 1981-01-23 | Elektrische Entladungslampe |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US4376905A (es) |
| EP (1) | EP0034113B1 (es) |
| JP (1) | JPS56128561A (es) |
| AR (1) | AR223093A1 (es) |
| BR (1) | BR8100689A (es) |
| DD (1) | DD156209A1 (es) |
| DE (1) | DE3167525D1 (es) |
| ES (1) | ES8202185A1 (es) |
| HU (1) | HU178836B (es) |
| IN (1) | IN154885B (es) |
| SU (1) | SU1138057A3 (es) |
| ZA (1) | ZA81274B (es) |
Families Citing this family (10)
| 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 |
| US4742269A (en) * | 1984-11-09 | 1988-05-03 | Ngk Insulators, Ltd. | Ceramic envelope device for high-pressure discharge lamp |
| DE9112690U1 (de) * | 1991-10-11 | 1991-12-05 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München | Hochdruckentladungslampe |
| DE9207816U1 (de) * | 1992-06-10 | 1992-08-20 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München | Hochdruckentladungslampe |
| DE4242123A1 (de) * | 1992-12-14 | 1994-06-16 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Hochdruckentladungslampe mit einem keramischen Entladungsgefäß |
| 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 |
| US7288303B2 (en) | 2004-06-08 | 2007-10-30 | Ngk Insulators, Ltd. | Structures of brittle materials and metals |
| US7521870B2 (en) | 2004-06-08 | 2009-04-21 | Ngk Insulators, Ltd. | Luminous containers and those for high pressure discharge lamps |
| EP1755147B1 (en) * | 2004-06-08 | 2011-04-20 | NGK Insulators, Ltd. | Light-emitting vessel and light-emitting vessel for high-pressure discharge lamp |
Family Cites Families (5)
| 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 |
| NL183613B (nl) * | 1978-03-15 | 1988-07-01 | Philips Nv | Elektrische lamp. |
| 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 EP EP81730009A patent/EP0034113B1/de not_active Expired
- 1981-01-23 DE DE8181730009T patent/DE3167525D1/de 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 BR BR8100689A patent/BR8100689A/pt unknown
- 1981-02-05 DD DD81227451A patent/DD156209A1/de unknown
- 1981-02-10 AR AR284260A patent/AR223093A1/es active
- 1981-02-10 ES ES499273A patent/ES8202185A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| IN154885B (es) | 1984-12-22 |
| JPH0255905B2 (es) | 1990-11-28 |
| DD156209A1 (de) | 1982-08-04 |
| ES499273A0 (es) | 1982-01-16 |
| HU178836B (en) | 1982-07-28 |
| JPS56128561A (en) | 1981-10-08 |
| ES8202185A1 (es) | 1982-01-16 |
| BR8100689A (pt) | 1981-08-18 |
| US4376905A (en) | 1983-03-15 |
| ZA81274B (en) | 1982-04-28 |
| EP0034113A1 (de) | 1981-08-19 |
| SU1138057A3 (ru) | 1985-01-30 |
| DE3167525D1 (en) | 1985-01-17 |
| AR223093A1 (es) | 1981-07-15 |
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|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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