JPS5519703A - Fluorescent lamp - Google Patents
Fluorescent lampInfo
- Publication number
- JPS5519703A JPS5519703A JP9141978A JP9141978A JPS5519703A JP S5519703 A JPS5519703 A JP S5519703A JP 9141978 A JP9141978 A JP 9141978A JP 9141978 A JP9141978 A JP 9141978A JP S5519703 A JPS5519703 A JP S5519703A
- Authority
- JP
- Japan
- Prior art keywords
- alumina powder
- lighting
- conductive film
- film
- 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)
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
PURPOSE: To make the promotion of improvement of characteristic, with a conductive film prevented from blacking phenomenon or lighting yellowing, that is generated at the time of long time lighting, by coating to stick γ-alumina powder to the conductive film which is applied for glass tube surfaces.
CONSTITUTION: On a conductive film 2, coated on and stuck to the inner surfaces of a bulb 1, is coated a dispersed liquid of γ-alumina powder by the flow down method from top face opening part of the bulb 1, with a hot air at temperature of 80°C blown at air speed of 3 m/sec into the bulb 1, in a time of as long as three minutes is dried an alumina powder 3, on which a luminous layer 4 is layer-built. For this γ-alumina powder is used a particle of diameter, for instance, in a range of 5 to 30 millimicrons, with its coating amount made to 1.5 × 10-2 to 6.5 × 10-2 mg/cm2 or its film thicness to 0.5 to 5 microns. In this way, the γ-alumina powder 3 becomes an insulation film to shut off the spark between EC film and mercury particle, to prevent the conductive film from blacking phenomenon or lighting yellowing caused when in the lighting for a long period, thus the characteristic can be improved.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9141978A JPS5519703A (en) | 1978-07-28 | 1978-07-28 | Fluorescent lamp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9141978A JPS5519703A (en) | 1978-07-28 | 1978-07-28 | Fluorescent lamp |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5519703A true JPS5519703A (en) | 1980-02-12 |
Family
ID=14025841
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9141978A Pending JPS5519703A (en) | 1978-07-28 | 1978-07-28 | Fluorescent lamp |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5519703A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6025135A (en) * | 1983-07-20 | 1985-02-07 | Matsushita Electronics Corp | Formation of white diffusion coating for tublar bulb |
JPS6264045A (en) * | 1985-09-17 | 1987-03-20 | Nec Home Electronics Ltd | Fluorescent lamp |
-
1978
- 1978-07-28 JP JP9141978A patent/JPS5519703A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6025135A (en) * | 1983-07-20 | 1985-02-07 | Matsushita Electronics Corp | Formation of white diffusion coating for tublar bulb |
JPS6264045A (en) * | 1985-09-17 | 1987-03-20 | Nec Home Electronics Ltd | Fluorescent lamp |
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