GB1131234A - Improvements in or relating to electrodes for high-pressure mercury vapour halogen discharge lamps - Google Patents
Improvements in or relating to electrodes for high-pressure mercury vapour halogen discharge lampsInfo
- Publication number
- GB1131234A GB1131234A GB40979/65A GB4097965A GB1131234A GB 1131234 A GB1131234 A GB 1131234A GB 40979/65 A GB40979/65 A GB 40979/65A GB 4097965 A GB4097965 A GB 4097965A GB 1131234 A GB1131234 A GB 1131234A
- Authority
- GB
- United Kingdom
- Prior art keywords
- emitter body
- helix
- current supply
- supply wire
- emitter
- 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
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
- H01J61/073—Main electrodes for high-pressure discharge lamps
- H01J61/0732—Main electrodes for high-pressure discharge lamps characterised by the construction of the electrode
Landscapes
- Discharge Lamp (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
1,131,234. Metal-vapour lamps. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 27 Sept., 1965 [30 Sept., 1964], No. 40979/65. Heading H1D. An electrode for a high-pressure mercury vapour halogen discharge lamp includes a metal outer part which is in electrically and thermally conducting relationship with a current supply wire, which surrounds a space at least half of which is occupied by an emitter body, and which has an opening at the side remote from the current supply wire so that the end of the discharge can rest on the emitter body during the starting condition, the emitter body being connected to the current supply wire by a path which includes the metal outer part and which has a thermal resistance such that during the cooling period following the extinction of the lamp the emitter body remains at a higher temperature than the metal outer part, whereby condensation of halogenide upon the emitter surface is prevented. The emitter body 14, Fig. 2, which preferably includes an immersed tungsten helix 13, is supported within an outer tungsten helix 11 with which it makes poor thermal contact, the outer helix being connected to the current supply wire 10. In another embodiment (Fig. 3, not shown) the turns of the outer helix do not contact the emitter body, but the free end portion of the helix wire is bent back along the helix axis, and supports the emitter body, thermal conduction to the current lead being reduced by the length of the therma path.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6411355A NL6411355A (en) | 1964-09-30 | 1964-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1131234A true GB1131234A (en) | 1968-10-23 |
Family
ID=19791129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB40979/65A Expired GB1131234A (en) | 1964-09-30 | 1965-09-27 | Improvements in or relating to electrodes for high-pressure mercury vapour halogen discharge lamps |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3349276A (en) |
| AT (1) | AT261745B (en) |
| BE (1) | BE670212A (en) |
| CH (1) | CH437525A (en) |
| DE (1) | DE1489445B1 (en) |
| FR (1) | FR1448551A (en) |
| GB (1) | GB1131234A (en) |
| NL (1) | NL6411355A (en) |
| SE (1) | SE324613B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2129609A (en) * | 1982-11-02 | 1984-05-16 | Heraeus Gmbh W C | Electrodes for laser exciter lamps |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1478565A (en) * | 1966-03-15 | 1967-04-28 | Lampes Sa | Improvement in electric discharge lamps containing metal iodides including sodium iodide |
| US3548242A (en) * | 1967-05-16 | 1970-12-15 | Sylvania Electric Prod | High pressure electric discharge device and cathode |
| US3530327A (en) * | 1968-03-11 | 1970-09-22 | Westinghouse Electric Corp | Metal halide discharge lamps with rare-earth metal oxide used as electrode emission material |
| US3753028A (en) * | 1970-05-22 | 1973-08-14 | Lampes Sa | Discharge lamp electrode |
| US3851207A (en) * | 1972-08-01 | 1974-11-26 | Gen Electric | Stabilized high intensity sodium vapor lamp |
| DE3242840A1 (en) * | 1982-04-20 | 1983-10-27 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München | Low power high-pressure discharge lamp |
| US4633136A (en) * | 1982-04-20 | 1986-12-30 | Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen Mbh | High-pressure discharge lamp with low power input |
| DE3641045A1 (en) * | 1986-12-01 | 1988-06-09 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | HIGH PRESSURE DISCHARGE LAMP, SEMI-SIDED |
| DE19538283A1 (en) * | 1995-10-16 | 1997-04-17 | Holzer Walter Prof Dr H C Ing | Cold cathode for gas discharge lamps |
| KR101206681B1 (en) * | 2011-07-13 | 2012-12-03 | (주) 상일시스템 | Cold cathode fluorescent lamp of high efficiency and long life for illumination |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB478024A (en) * | 1936-11-25 | 1938-01-11 | Gen Electric Co Ltd | Improvements in or relating to thermionic cathodes for high pressure metal vapour discharge devices |
| BE451865A (en) * | 1942-08-13 | |||
| DE837573C (en) * | 1950-04-27 | 1952-04-28 | Pintsch Electro G M B H | Process for the production of discharge lamps, in particular fluorescent tubes |
| FR1097331A (en) * | 1953-03-06 | 1955-07-04 | Arrangement of electrodes for electric discharge receptacles or the like | |
| GB943535A (en) * | 1959-10-16 | 1963-12-04 | Tesla Np | Improvements in or relating to discharge lamps |
| US3195005A (en) * | 1959-12-22 | 1965-07-13 | Westinghouse Electric Corp | Electrode and component therefor |
| US3029359A (en) * | 1960-03-29 | 1962-04-10 | Gen Electric | Thermionic electrode for discharge lamps |
| US3170081A (en) * | 1962-06-05 | 1965-02-16 | Westinghouse Electric Corp | Discharge lamp electrode |
| DE1120016B (en) * | 1964-07-08 | 1961-12-21 | Elger 1 Alpenlaendisches Unter | Unheated electrode, especially for low-voltage fluorescent lamps, as well as lamps with such electrodes |
-
1964
- 1964-09-30 NL NL6411355A patent/NL6411355A/xx unknown
-
1965
- 1965-09-25 DE DE19651489445 patent/DE1489445B1/en not_active Withdrawn
- 1965-09-27 GB GB40979/65A patent/GB1131234A/en not_active Expired
- 1965-09-27 CH CH1332565A patent/CH437525A/en unknown
- 1965-09-27 SE SE12512/65A patent/SE324613B/xx unknown
- 1965-09-27 US US490437A patent/US3349276A/en not_active Expired - Lifetime
- 1965-09-27 AT AT875265A patent/AT261745B/en active
- 1965-09-28 BE BE670212A patent/BE670212A/xx unknown
- 1965-09-29 FR FR33106A patent/FR1448551A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2129609A (en) * | 1982-11-02 | 1984-05-16 | Heraeus Gmbh W C | Electrodes for laser exciter lamps |
Also Published As
| Publication number | Publication date |
|---|---|
| SE324613B (en) | 1970-06-08 |
| FR1448551A (en) | 1966-08-05 |
| DE1489445B1 (en) | 1970-11-12 |
| NL6411355A (en) | 1966-03-31 |
| BE670212A (en) | 1966-03-28 |
| CH437525A (en) | 1967-06-15 |
| US3349276A (en) | 1967-10-24 |
| AT261745B (en) | 1968-05-10 |
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