JPS6417376A - Fluorescent tube - Google Patents
Fluorescent tubeInfo
- Publication number
- JPS6417376A JPS6417376A JP17236087A JP17236087A JPS6417376A JP S6417376 A JPS6417376 A JP S6417376A JP 17236087 A JP17236087 A JP 17236087A JP 17236087 A JP17236087 A JP 17236087A JP S6417376 A JPS6417376 A JP S6417376A
- Authority
- JP
- Japan
- Prior art keywords
- grid
- control function
- cathode filament
- thermionic emission
- thermion
- 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
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
PURPOSE:To uniformize a luminance distribution in the longitudinal direction of a fluorescent tube with a simple structure by setting up a grid so as to provide the thermion acceleration control function conformed to the thermionic emission quantity of a cathode filament. CONSTITUTION:A grid 15 is set up so as to install the control function conformed to a thermionic emission distribution in the longitudinal direction of a cathode filament 7. And, a control function of the grid 15 at both ends, where voltage of the cathode filament 7 comes high, is made yet smaller, but the grid control function at the central part, where the cathode filament 7 voltage is low, is made so as to be larger. Consequently, with the thermion acceleration control function installed in the grid 15, electrons at both ends of the cathode filament 7, where thermionic emission quantity is abundant, are made to be collected at the central part of the cathode filament 7 in consequence, so that any drop in the thermionic emission quantity at the central part of the filament 7 is prevented from occurring. With this constitution, the thermion acceleration control function in the size conformed to size of the thermionic emission quantity is given to the grid 15, thus a light distribution is practically uniformized by a simple structure.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17236087A JPS6417376A (en) | 1987-07-10 | 1987-07-10 | Fluorescent tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17236087A JPS6417376A (en) | 1987-07-10 | 1987-07-10 | Fluorescent tube |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6417376A true JPS6417376A (en) | 1989-01-20 |
Family
ID=15940460
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17236087A Pending JPS6417376A (en) | 1987-07-10 | 1987-07-10 | Fluorescent tube |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6417376A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8158755B2 (en) | 2008-09-25 | 2012-04-17 | Nitto Denko Corporation | Production method of gelatin particles |
-
1987
- 1987-07-10 JP JP17236087A patent/JPS6417376A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8158755B2 (en) | 2008-09-25 | 2012-04-17 | Nitto Denko Corporation | Production method of gelatin particles |
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