GB667670A - Improvements in or relating to gas-filled discharge lamps, more particularly fluorescent lamps - Google Patents
Improvements in or relating to gas-filled discharge lamps, more particularly fluorescent lampsInfo
- Publication number
- GB667670A GB667670A GB29590/48A GB2959048A GB667670A GB 667670 A GB667670 A GB 667670A GB 29590/48 A GB29590/48 A GB 29590/48A GB 2959048 A GB2959048 A GB 2959048A GB 667670 A GB667670 A GB 667670A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wire
- cathode
- lamp
- discharge
- anode
- 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
- H01J61/067—Main electrodes for low-pressure discharge lamps
- H01J61/0672—Main electrodes for low-pressure discharge lamps characterised by the construction of the electrode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
- H01J5/50—Means forming part of the tube or lamps for the purpose of providing electrical connection to it
- H01J5/54—Means forming part of the tube or lamps for the purpose of providing electrical connection to it supported by a separate part, e.g. base
- H01J5/56—Shape of the separate part
- H01J5/565—Bases for circular lamps
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
667,670. Discharge lamps. LEHMANN, F. Nov. 15, 1948 [Nov. 27, 1947], No. 29690/48. Drawings to Specification. Class 39 (i). In a low-pressure gas-filled arc discharge lamp for operation on low voltages, more particularly a fluorescent lamp, the two electrodes each comprise an activated element adapted to be heated by the discharge and to form a cathode, and an element adapted to remain cold during the discharge and to form an anode, both elements being connected to a single contact plug. The cathode element may be an activated wire helix connected to two lead-in wires and the anode element a metal hood connected to a third lead-in wire, or the cathode element may be a spirally wound wire connected to a single lead-in wire. Alternatively, the anode may be in the form of wire wings connected to the ends of a helical cathode. The construction enables the lamp to be supported in two single-point sockets, or in the case of a " circular " lamp in one two-point socket. A suitable filling comprises argon and mercury vapour at a pressure of about 1 mm. of mercury.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS285284X | 1947-11-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB667670A true GB667670A (en) | 1952-03-05 |
Family
ID=5452000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29590/48A Expired GB667670A (en) | 1947-11-27 | 1948-11-15 | Improvements in or relating to gas-filled discharge lamps, more particularly fluorescent lamps |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE486041A (en) |
| CH (1) | CH285284A (en) |
| FR (1) | FR975485A (en) |
| GB (1) | GB667670A (en) |
-
0
- BE BE486041D patent/BE486041A/xx unknown
-
1948
- 1948-11-15 CH CH285284D patent/CH285284A/en unknown
- 1948-11-15 GB GB29590/48A patent/GB667670A/en not_active Expired
- 1948-11-26 FR FR975485D patent/FR975485A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE486041A (en) | |
| FR975485A (en) | 1951-03-06 |
| CH285284A (en) | 1952-08-31 |
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