JPS5482868A - Device for projecting steam to bulb - Google Patents
Device for projecting steam to bulbInfo
- Publication number
- JPS5482868A JPS5482868A JP14931777A JP14931777A JPS5482868A JP S5482868 A JPS5482868 A JP S5482868A JP 14931777 A JP14931777 A JP 14931777A JP 14931777 A JP14931777 A JP 14931777A JP S5482868 A JPS5482868 A JP S5482868A
- Authority
- JP
- Japan
- Prior art keywords
- bulb
- powder
- fluorescent substance
- steam
- projecting
- 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
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Abstract
PURPOSE: To coat a fluorescent film of uniform adhesive power, by uniformly projcting steam to the inside surface of a glass bulb whereon powder of fluorescent substance is coated.
CONSTITUTION: A sprayer 3 for projecting the fluorescent substance is inserted into the glass bulb 1. And electroconductive rod 5 is inserted into the sprayer 3. A wind regulator is attached to the tip of the electroconductive rod 5 outside the open end of a projecting tube 4 for the powder of the fluorescent substance and is connected to the cathode of an electrostatic power source 2. The bulb 1 is connected to the grounded anode of the power source 2. The bult 1 is rotated centering its axis and heated at a temperature of 150 to 200°C by a heater etc. so that the bulb is made electroconductive. Then, the powder of the fluorescent substance is projected through the projecting tube 4 of the sprayer 3 and charged by corona discharge from a discharge plate 7. Thereby, a fluorescent powder layer 8 is electrostatically produced on the inside surface of the bulb connected to the anode. Thereafter, the sparyer is pulled out and a steam projector 9 is inserted into the bulb. Steam is uniformly coated on the entire inside surface of the bulb through numerous projecting holes 12 of a steam projecting head 11, thereby increasing the binding force of the powder of the fluorescent substance.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14931777A JPS5482868A (en) | 1977-12-14 | 1977-12-14 | Device for projecting steam to bulb |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14931777A JPS5482868A (en) | 1977-12-14 | 1977-12-14 | Device for projecting steam to bulb |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5482868A true JPS5482868A (en) | 1979-07-02 |
Family
ID=15472467
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14931777A Pending JPS5482868A (en) | 1977-12-14 | 1977-12-14 | Device for projecting steam to bulb |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5482868A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006297353A (en) * | 2005-04-25 | 2006-11-02 | Matsushita Electric Works Ltd | Coating apparatus |
-
1977
- 1977-12-14 JP JP14931777A patent/JPS5482868A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006297353A (en) * | 2005-04-25 | 2006-11-02 | Matsushita Electric Works Ltd | Coating apparatus |
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