JPS5450167A - Low-pressure vapor discharge lamp - Google Patents
Low-pressure vapor discharge lampInfo
- Publication number
- JPS5450167A JPS5450167A JP11562577A JP11562577A JPS5450167A JP S5450167 A JPS5450167 A JP S5450167A JP 11562577 A JP11562577 A JP 11562577A JP 11562577 A JP11562577 A JP 11562577A JP S5450167 A JPS5450167 A JP S5450167A
- Authority
- JP
- Japan
- Prior art keywords
- fluorescent material
- discharge lamp
- bulb
- coated
- glass bulb
- 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
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
PURPOSE: To provide a discharge lamp, which is afforded with uniform brightness over the entire surface thereof, by selecting the thickness of film of fluorescent material, coated on the inner surface of outer bulb of the discharge lamp which has a plurality of discharge paths in its double-glass bulb, within a predetermined range.
CONSTITUTION: In a discharge lamp, in which fluorescent material 3 is coated on the surface of its double-glass bulb consisting of outer glass bulb 1 (for instance, 20cm long and having a maximum diameter of 8cm) and inner glass tube 2 (for instance, 17cm long and having a major diameter of 4cm and a minor diameter of 1.5cm), and cathode 5 of filament and a plurality of anodes 6, 6' are supported by stem 4 and flare, thereby forming a plurality of discharge paths; thickness of the film of fluorescent material 3 coated on the surface of said outer glass bulb 1 is selected within the range of 1W50mg/cm2. By thus selecting the thickness of film of fluorescent material 3 in the above range, brightness of the lamp can be made uniform virtually over the entire surface thereof, and lowering of quantity of light can be prevented. Further, operation of coating fluorescent material over the surface of the bulb can be rendered easy
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11562577A JPS5450167A (en) | 1977-09-28 | 1977-09-28 | Low-pressure vapor discharge lamp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11562577A JPS5450167A (en) | 1977-09-28 | 1977-09-28 | Low-pressure vapor discharge lamp |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5450167A true JPS5450167A (en) | 1979-04-19 |
Family
ID=14667274
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11562577A Pending JPS5450167A (en) | 1977-09-28 | 1977-09-28 | Low-pressure vapor discharge lamp |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5450167A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5661755A (en) * | 1979-10-24 | 1981-05-27 | Stanley Electric Co Ltd | Fluorescent lamp |
JPS59196553A (en) * | 1983-03-04 | 1984-11-07 | ジ−・テイ−・イ−・プロダクツ・コ−ポレイシヨン | Lamp container having luminescent substance on inner surface, method of coating said substance and coated substance |
-
1977
- 1977-09-28 JP JP11562577A patent/JPS5450167A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5661755A (en) * | 1979-10-24 | 1981-05-27 | Stanley Electric Co Ltd | Fluorescent lamp |
JPS59196553A (en) * | 1983-03-04 | 1984-11-07 | ジ−・テイ−・イ−・プロダクツ・コ−ポレイシヨン | Lamp container having luminescent substance on inner surface, method of coating said substance and coated substance |
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