JPS57172646A - Fluorescent lamp - Google Patents

Fluorescent lamp

Info

Publication number
JPS57172646A
JPS57172646A JP5707481A JP5707481A JPS57172646A JP S57172646 A JPS57172646 A JP S57172646A JP 5707481 A JP5707481 A JP 5707481A JP 5707481 A JP5707481 A JP 5707481A JP S57172646 A JPS57172646 A JP S57172646A
Authority
JP
Japan
Prior art keywords
film
phosphor
slurry
wall
mean grain
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
JP5707481A
Other languages
Japanese (ja)
Inventor
Masayuki Nakamoto
Yoshio Kimura
Toshio Nishimura
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 JP5707481A priority Critical patent/JPS57172646A/en
Publication of JPS57172646A publication Critical patent/JPS57172646A/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
    • H01J61/38—Devices for influencing the colour or wavelength of the light
    • H01J61/42—Devices for influencing the colour or wavelength of the light by transforming the wavelength of the light by luminescence
    • H01J61/46—Devices characterised by the binder or other non-luminescent constituent of the luminescent material, e.g. for obtaining desired pouring or drying properties

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

PURPOSE:To increase the utilization rate of ultraviolet rays, and improve the light output of a fluorescent lamp by coating the inner wall of the lamp with a triple film consisting of a first film made of a phosphor, a second and a third film made of silicon dioxide with specified mean grain diameters. CONSTITUTION:A silicon-dioxide slurry having mean grain diameter below 1/30 time that of the phosphor of a first film 4 is applied to the inner wall of a bulb 1, and is dried so as to form a third film 2. Next, a silicon-dioxide slurry having a mean grain diameter 8 to 30 times that of the phosphor of the first film 4 is applied on the third film 2, and is dried so as to form a second film 3. After that, a phosphor slurry is applied on the second film 3, and nitrocellulose is scattered by drying and heating the inner wall of the bulb 1 coated with the phosphor slurry so as to form the first film 4, thus a triple film is obtained. As a result, the utilization rate of ultraviolet rays can be increased, and the light output can be improved.
JP5707481A 1981-04-17 1981-04-17 Fluorescent lamp Pending JPS57172646A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5707481A JPS57172646A (en) 1981-04-17 1981-04-17 Fluorescent lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5707481A JPS57172646A (en) 1981-04-17 1981-04-17 Fluorescent lamp

Publications (1)

Publication Number Publication Date
JPS57172646A true JPS57172646A (en) 1982-10-23

Family

ID=13045305

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5707481A Pending JPS57172646A (en) 1981-04-17 1981-04-17 Fluorescent lamp

Country Status (1)

Country Link
JP (1) JPS57172646A (en)

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