JPS54135467A - Powder coating to bulb inside - Google Patents
Powder coating to bulb insideInfo
- Publication number
- JPS54135467A JPS54135467A JP4302778A JP4302778A JPS54135467A JP S54135467 A JPS54135467 A JP S54135467A JP 4302778 A JP4302778 A JP 4302778A JP 4302778 A JP4302778 A JP 4302778A JP S54135467 A JPS54135467 A JP S54135467A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- bulb
- nozzle
- turned
- phosphor
- 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 the bulb inside with powder uniformly by performing the electrostatic coating in such a way that the powder is injected as it is turned from the nozzle and the bulb is turned in the opposite direction to the turning flow of powder.
CONSTITUTION: The nozzle 2 is inserted into the bulb 1 of fluorescent lamp. The powder of phosphor is fed to the nozzle 2 with compressed air by the powder feed feature, and is jetted with turning flow. Since an electrostatic voltage is applied to across the nozzle 2 and bulb 1, the bulb inside is coated with charged phosphor powder. The nozzle 2 is retreated as it jets the powder. Also the bulb 1 is turned in the opposite direction to the turning flow of powder. Therefore the relative velocity of phosphor powder in the turning direction is made greater, an uniform coating can be accomplished.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4302778A JPS54135467A (en) | 1978-04-12 | 1978-04-12 | Powder coating to bulb inside |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4302778A JPS54135467A (en) | 1978-04-12 | 1978-04-12 | Powder coating to bulb inside |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54135467A true JPS54135467A (en) | 1979-10-20 |
Family
ID=12652457
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4302778A Pending JPS54135467A (en) | 1978-04-12 | 1978-04-12 | Powder coating to bulb inside |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54135467A (en) |
-
1978
- 1978-04-12 JP JP4302778A patent/JPS54135467A/en active Pending
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