JPS5457377A - Method of coating fluorescent material and drying the same - Google Patents
Method of coating fluorescent material and drying the sameInfo
- Publication number
- JPS5457377A JPS5457377A JP12346577A JP12346577A JPS5457377A JP S5457377 A JPS5457377 A JP S5457377A JP 12346577 A JP12346577 A JP 12346577A JP 12346577 A JP12346577 A JP 12346577A JP S5457377 A JPS5457377 A JP S5457377A
- Authority
- JP
- Japan
- Prior art keywords
- glass tube
- holding
- fluorescent material
- contact pieces
- film
- 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 obtain uniform coating of fluorescent material on a glass tube of fluorescent lamp by holding the glass tube by means of contact pieces whose temperature is kept at 20W40°C, thereby preventing separation of the film of fluorescent material from the surface of the galss tube, and at the same time, improving its outer apearance.
CONSTITUTION: In applying coating on the inner surface of a glass tube constituting, for instance, fluorescent lamp or tubular bulb and subsequently drying the same while holding the glass tube firmly in place by use of a suitable means, outer apperance of the glass tube is ofen impaired by uneven drying of coated film 4 that is caused by the temperature difference between glass tube 1 and contact pieces of support arms 2, 2' and support plates 3, 3', which are employed for holding the glass tube 1 firmly in place. In order to dry the coated film uniformly, therefore, temperature of the contact pieces is kept at 20W40°C by supplying cooling air to the surfaces of support arms 2, 2' and support plates 3, 3', whereby the coated film can be dried to a uniform thickness, so that separation of the film can be prevented, and at the same time, its outer appearance can be improved
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12346577A JPS5457377A (en) | 1977-10-17 | 1977-10-17 | Method of coating fluorescent material and drying the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12346577A JPS5457377A (en) | 1977-10-17 | 1977-10-17 | Method of coating fluorescent material and drying the same |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5457377A true JPS5457377A (en) | 1979-05-09 |
Family
ID=14861292
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12346577A Pending JPS5457377A (en) | 1977-10-17 | 1977-10-17 | Method of coating fluorescent material and drying the same |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5457377A (en) |
-
1977
- 1977-10-17 JP JP12346577A patent/JPS5457377A/en active Pending
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