JPS5512610A - Manufacture of fluorescent lamp - Google Patents
Manufacture of fluorescent lampInfo
- Publication number
- JPS5512610A JPS5512610A JP8455378A JP8455378A JPS5512610A JP S5512610 A JPS5512610 A JP S5512610A JP 8455378 A JP8455378 A JP 8455378A JP 8455378 A JP8455378 A JP 8455378A JP S5512610 A JPS5512610 A JP S5512610A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- fluorescent lamp
- temperature
- keeping
- darkening
- 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.)
- Pending
Links
Landscapes
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
PURPOSE: To lessen darkening by reducing the adsorption of impure gas onto fluorescent substance by keeping the temperature of lamp heating in the activation process at a temperature lower than of gas exhaustion process.
CONSTITUTION: A fluorescent lamp into which filaments coated with an alkaline earth metal carbonate are confined is heated at 450 to 500°C while exhausting waste gas to remove adsorbed gas, and then the filaments are electrically energized while keeping the fluorescent lamp at a temperature (300°C) lower than that of the gas exhaustion process in order to decompose carbonate for activation. Thus, the relative value B of luminous flux maintenance rate A and darkening degree to lighting time is made better.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8455378A JPS5512610A (en) | 1978-07-13 | 1978-07-13 | Manufacture of fluorescent lamp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8455378A JPS5512610A (en) | 1978-07-13 | 1978-07-13 | Manufacture of fluorescent lamp |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5512610A true JPS5512610A (en) | 1980-01-29 |
Family
ID=13833825
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8455378A Pending JPS5512610A (en) | 1978-07-13 | 1978-07-13 | Manufacture of fluorescent lamp |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5512610A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4898554A (en) * | 1988-04-22 | 1990-02-06 | Tungsram Reszvenytarsasag | Method of and equipment for ageing a low-pressure hot-cathode discharge light source, particularly a fluorescent lamp |
-
1978
- 1978-07-13 JP JP8455378A patent/JPS5512610A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4898554A (en) * | 1988-04-22 | 1990-02-06 | Tungsram Reszvenytarsasag | Method of and equipment for ageing a low-pressure hot-cathode discharge light source, particularly a fluorescent lamp |
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