GB457797A - Improvements in electric lamps for lighting purposes - Google Patents
Improvements in electric lamps for lighting purposesInfo
- Publication number
- GB457797A GB457797A GB16369/35A GB1636935A GB457797A GB 457797 A GB457797 A GB 457797A GB 16369/35 A GB16369/35 A GB 16369/35A GB 1636935 A GB1636935 A GB 1636935A GB 457797 A GB457797 A GB 457797A
- Authority
- GB
- United Kingdom
- Prior art keywords
- enclosure
- electrodes
- electrode
- june
- electric lamps
- 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
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/02—Details
- H05B33/04—Sealing arrangements, e.g. against humidity
Landscapes
- Luminescent Compositions (AREA)
Abstract
457,797. Electric lamps. COUSTAL, R. A., 88, Rue Garibaldi, Saint-Maur, Seine, France. June 5, 1935, No. 16369. Convention date, June 8, 1934. [Class 39 (i)] [See also Group XI] Luminescent material such as phosphorescent zinc sulphide is excited to emit light by a variable electric field and is disposed on the inner face 7 of a gas-tight, transparent enclosure 1 of pear-shape with its height equal to its width. The enclosure 1 is very highly evacuated so that cathodic phenomena and probably also ionization are absent. The traces of gas inevitably remaining in the enclosure may be air or neon. The field is produced by connecting electrodes 2, 3 to a high-frequency source. One electrode 3 may be of tin foil on the outside of the enclosure 1 and the other electrode 2 may be internal as shown or external, or both electrodes may be metal plates between which the enclosure 1 is placed. Earth may be used as one electrode by resting the enclosure 1 on a sheet of water or the enclosure may be metallized internally or externally to form electrodes. Several electrodes of one polarity may be used. During the evacuation of the enclosure, a high-frequency current is applied to the electrodes. The Specification as open to inspection under Sect. 91 comprises also arrangements in which the enclosure is only partially evacuated. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR457797X | 1934-06-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB457797A true GB457797A (en) | 1936-12-07 |
Family
ID=8901442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16369/35A Expired GB457797A (en) | 1934-06-08 | 1935-06-05 | Improvements in electric lamps for lighting purposes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB457797A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4266167A (en) * | 1979-11-09 | 1981-05-05 | Gte Laboratories Incorporated | Compact fluorescent light source and method of excitation thereof |
| DE3135972A1 (en) * | 1980-09-12 | 1982-04-29 | Shing Cheung Kowloon Hong Kong Chow | OPTICAL DISPLAY DEVICE EQUIPPED WITH A DISCHARGE LAMP |
| GB2213317A (en) * | 1980-04-07 | 1989-08-09 | Gen Electric | Envelope for high-intensity-discharge electrodeless arc lamp |
| GB2291533A (en) * | 1994-07-21 | 1996-01-24 | Mitsubishi Electric Corp | Fluorescent lamp and display device |
| US5668443A (en) * | 1994-07-21 | 1997-09-16 | Mitsubishi Denki Kabushiki Kaisha | Display fluorescent lamp and display device |
-
1935
- 1935-06-05 GB GB16369/35A patent/GB457797A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4266167A (en) * | 1979-11-09 | 1981-05-05 | Gte Laboratories Incorporated | Compact fluorescent light source and method of excitation thereof |
| GB2213317A (en) * | 1980-04-07 | 1989-08-09 | Gen Electric | Envelope for high-intensity-discharge electrodeless arc lamp |
| DE3135972A1 (en) * | 1980-09-12 | 1982-04-29 | Shing Cheung Kowloon Hong Kong Chow | OPTICAL DISPLAY DEVICE EQUIPPED WITH A DISCHARGE LAMP |
| GB2291533A (en) * | 1994-07-21 | 1996-01-24 | Mitsubishi Electric Corp | Fluorescent lamp and display device |
| US5668443A (en) * | 1994-07-21 | 1997-09-16 | Mitsubishi Denki Kabushiki Kaisha | Display fluorescent lamp and display device |
| GB2291533B (en) * | 1994-07-21 | 1998-02-18 | Mitsubishi Electric Corp | Fluorescent lamp and display device |
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