GB497822A - Improvements in electric gas or vapour discharge tubes - Google Patents
Improvements in electric gas or vapour discharge tubesInfo
- Publication number
- GB497822A GB497822A GB14040/38A GB1404038A GB497822A GB 497822 A GB497822 A GB 497822A GB 14040/38 A GB14040/38 A GB 14040/38A GB 1404038 A GB1404038 A GB 1404038A GB 497822 A GB497822 A GB 497822A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gas
- pressure
- luminescent material
- discharge tubes
- electric gas
- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
- C09K11/025—Use of particular materials as binders, particle coatings or suspension media therefor non-luminescent particle coatings or suspension media
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
497,822. Discharge lamps. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. May 11, 1938, No. 14040. Convention date, May 14, 1937. [Class 39 (i)] A discharge lamp 1 is surrounded by a closed transparent screen 4, containing gas or vapour at a pressure sufficient to give convection currents, which is only partially surrounded by a closed envelope 9 containing luminescent material 10. The heat developed is largely dissipated in the portion 5, which does not contain luminescent material. The screen 4 may contain nitrogen at 10 cms. pressure, but preferably a gas such as carbon dioxide which absorbs strongly in the infra-red region is employed. The lamp 1 has a tubular quartz envelope containing rare gas and mercury, at a working pressure of 20 atmospheres.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE497822X | 1937-05-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB497822A true GB497822A (en) | 1938-12-29 |
Family
ID=6545231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14040/38A Expired GB497822A (en) | 1937-05-14 | 1938-05-11 | Improvements in electric gas or vapour discharge tubes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB497822A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2143674A (en) * | 1983-06-14 | 1985-02-13 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | High-pressure discharge lamp |
| GB2145557A (en) * | 1983-08-13 | 1985-03-27 | Emi Plc Thorn | Improvements in discharge lamps |
-
1938
- 1938-05-11 GB GB14040/38A patent/GB497822A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2143674A (en) * | 1983-06-14 | 1985-02-13 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | High-pressure discharge lamp |
| GB2145557A (en) * | 1983-08-13 | 1985-03-27 | Emi Plc Thorn | Improvements in discharge lamps |
| US4771207A (en) * | 1983-08-13 | 1988-09-13 | Thorn Emi Plc | Discharge lamp assembly |
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