JPS56123662A - Curved fluorescent lamp - Google Patents

Curved fluorescent lamp

Info

Publication number
JPS56123662A
JPS56123662A JP2652180A JP2652180A JPS56123662A JP S56123662 A JPS56123662 A JP S56123662A JP 2652180 A JP2652180 A JP 2652180A JP 2652180 A JP2652180 A JP 2652180A JP S56123662 A JPS56123662 A JP S56123662A
Authority
JP
Japan
Prior art keywords
phosphor
film
fluorescent film
coated
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
Application number
JP2652180A
Other languages
Japanese (ja)
Inventor
Atsushi Sato
Noriyoshi Kikuchi
Takashi Omori
Masatoshi Nakamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP2652180A priority Critical patent/JPS56123662A/en
Publication of JPS56123662A publication Critical patent/JPS56123662A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/35—Vessels; Containers provided with coatings on the walls thereof; Selection of materials for the coatings

Abstract

PURPOSE:To improve initial light flux and performance characteristic by coating the inner surface of a transparent airtight bulb in curved form with the metal oxide film and coating with the first fluorescent film and further with the second fluorescent film, reducing the particle size of the first phosphor than that of the second phosphor. CONSTITUTION:A transparent airtight bulb in curved form is made from sode lime glass or low lead glass containing 12wt% or less lead oxide each of which has the softening temperature of 640-720 deg.C and the linear thermal expansion coefficient of 92-105X10<-7>cm/cm/ deg.C. The inner surface of the bubl described above is coated with aluminum oxide film and said film is coated with the first fluorescent film, and further coated with the second fluorescent film. At this time, the particle size of the first phosphor is selected less than that of the second phosphor. Accordingly, initial light flux and performance characteristic are not reduced even through the thermal processing in curved forming, and the deterioration of strength of the bulb can be prevented.
JP2652180A 1980-03-05 1980-03-05 Curved fluorescent lamp Pending JPS56123662A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2652180A JPS56123662A (en) 1980-03-05 1980-03-05 Curved fluorescent lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2652180A JPS56123662A (en) 1980-03-05 1980-03-05 Curved fluorescent lamp

Publications (1)

Publication Number Publication Date
JPS56123662A true JPS56123662A (en) 1981-09-28

Family

ID=12195777

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2652180A Pending JPS56123662A (en) 1980-03-05 1980-03-05 Curved fluorescent lamp

Country Status (1)

Country Link
JP (1) JPS56123662A (en)

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