GB854745A - Improvements in or relating to light sources comprising at least one electric vapourdischarge tube - Google Patents
Improvements in or relating to light sources comprising at least one electric vapourdischarge tubeInfo
- Publication number
- GB854745A GB854745A GB29957/59A GB2995759A GB854745A GB 854745 A GB854745 A GB 854745A GB 29957/59 A GB29957/59 A GB 29957/59A GB 2995759 A GB2995759 A GB 2995759A GB 854745 A GB854745 A GB 854745A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrodes
- tube
- light source
- adjacent
- vapourdischarge
- 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
- C07—ORGANIC CHEMISTRY
- C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
- C07H9/00—Compounds containing a hetero ring sharing at least two hetero atoms with a saccharide radical
- C07H9/02—Compounds containing a hetero ring sharing at least two hetero atoms with a saccharide radical the hetero ring containing only oxygen as ring hetero atoms
- C07H9/04—Cyclic acetals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/30—Vessels; Containers
- H01J61/32—Special longitudinal shape, e.g. for advertising purposes
- H01J61/327—"Compact"-lamps, i.e. lamps having a folded discharge path
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
- H01J61/74—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a main light-emitting filling of difficult vaporisable metal vapour, e.g. sodium
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Biotechnology (AREA)
- General Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- Molecular Biology (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
854,745. Metal vapour lamps. PHILIPS ELECTRICAL INDUSTRIES Ltd. Sept. 2, 1959 [Sept. 5, 1958], No. 29957/59. Drawings to Specification. Class 39(1). A light source comprises at least one metal vapour discharge lamp, which may have a sodium filling, there being a number of straight tubular envelope portions joined by bands, and at least as many electrodes, in the source, as bends in the tubes, which are arranged so that each bend is heated to the same extent as the straight portions by electrodes which are adjacent to them. In one form a light source comprises an envelope, three parallel limbs joined by two bends so that each of two electrodes are arranged adjacent, and symmetrically to two limbs and the bend joining them. In another form the light source is formed by two U-tube shaped discharge tubes which are disposed so that the electrodes of each tube are adjacent to the bead of the other.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL854745X | 1958-09-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB854745A true GB854745A (en) | 1960-11-23 |
Family
ID=19847213
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB29957/59A Expired GB854745A (en) | 1958-09-05 | 1959-09-02 | Improvements in or relating to light sources comprising at least one electric vapourdischarge tube |
Country Status (3)
Country | Link |
---|---|
FR (1) | FR1234566A (en) |
GB (1) | GB854745A (en) |
NL (2) | NL231157A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3005017A1 (en) * | 1979-02-13 | 1980-08-21 | Westinghouse Electric Corp | ELECTRIC LAMP UNIT |
US4337414A (en) * | 1979-11-26 | 1982-06-29 | Westinghouse Electric Corp. | Compact fluorescent lamp having convoluted tubular envelope of tridimensional configuration, method of making such envelope, and lighting unit incorporating such lamp |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2507011A1 (en) * | 1981-05-26 | 1982-12-03 | Desplat Raymond | DISCHARGE LAMP TUBE TYPE WITH COLD CATHODE CURVED ACCORDING TO TWO TABLECLOTHS |
-
0
- NL NL98672D patent/NL98672C/xx active
- NL NL231157D patent/NL231157A/xx unknown
-
1959
- 1959-09-02 GB GB29957/59A patent/GB854745A/en not_active Expired
- 1959-09-03 FR FR804275A patent/FR1234566A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3005017A1 (en) * | 1979-02-13 | 1980-08-21 | Westinghouse Electric Corp | ELECTRIC LAMP UNIT |
US4300073A (en) * | 1979-02-13 | 1981-11-10 | Westinghouse Electric Corp. | Screw-in type lighting unit having a convoluted tridimensional fluorescent lamp |
US4337414A (en) * | 1979-11-26 | 1982-06-29 | Westinghouse Electric Corp. | Compact fluorescent lamp having convoluted tubular envelope of tridimensional configuration, method of making such envelope, and lighting unit incorporating such lamp |
Also Published As
Publication number | Publication date |
---|---|
FR1234566A (en) | 1960-10-18 |
NL98672C (en) | |
NL231157A (en) |
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