JPS5593652A - Discharge lamp - Google Patents
Discharge lampInfo
- Publication number
- JPS5593652A JPS5593652A JP16558578A JP16558578A JPS5593652A JP S5593652 A JPS5593652 A JP S5593652A JP 16558578 A JP16558578 A JP 16558578A JP 16558578 A JP16558578 A JP 16558578A JP S5593652 A JPS5593652 A JP S5593652A
- Authority
- JP
- Japan
- Prior art keywords
- deterioration
- degree
- phosphor
- phosphor layer
- lamp tube
- 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
Abstract
PURPOSE: To prevent the color of a fluorescent lamp from being drifted with time by subsequently laminating the different phosphor layers with the large degree of deterioration on a lamp tube and forming the phosphor layer with the smallest degree of deterioration on its innermost end.
CONSTITUTION: Phosphor types are classified based on their degree of deterioration. The phosphor layer with the large degree of deterioration is subsequently laminated on the inside surface of the lamp tube 1 and the phosphor layer with the smallest degree of deterioration is formed on its innermost end. For example, the phosphor layer 2 with the large degree of light flux deterioration is formed on the inside surface of the lamp tube 1 and that 3 with the slightly smaller degree of deterioration is formed on it. Moreover, the phosphor 4 with the further smaller degree of deterioration is laminted on the surface of the layer 3. This permits the whole phosphor layer to have almost the uniform degree of deterioration and prevents its color from being drifted with time.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16558578A JPS5593652A (en) | 1978-12-30 | 1978-12-30 | Discharge lamp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16558578A JPS5593652A (en) | 1978-12-30 | 1978-12-30 | Discharge lamp |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5593652A true JPS5593652A (en) | 1980-07-16 |
Family
ID=15815144
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16558578A Pending JPS5593652A (en) | 1978-12-30 | 1978-12-30 | Discharge lamp |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5593652A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05174790A (en) * | 1991-12-18 | 1993-07-13 | Matsushita Electric Works Ltd | Fluorescent lamp |
-
1978
- 1978-12-30 JP JP16558578A patent/JPS5593652A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05174790A (en) * | 1991-12-18 | 1993-07-13 | Matsushita Electric Works Ltd | Fluorescent lamp |
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