JPS5572355A - Fluorescent lamp - Google Patents

Fluorescent lamp

Info

Publication number
JPS5572355A
JPS5572355A JP14607678A JP14607678A JPS5572355A JP S5572355 A JPS5572355 A JP S5572355A JP 14607678 A JP14607678 A JP 14607678A JP 14607678 A JP14607678 A JP 14607678A JP S5572355 A JPS5572355 A JP S5572355A
Authority
JP
Japan
Prior art keywords
reaction ratio
brightness
lamp
strength
phosphor 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
Application number
JP14607678A
Other languages
Japanese (ja)
Inventor
Akimasa Kondo
Hiroyuki Ebara
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 JP14607678A priority Critical patent/JPS5572355A/en
Publication of JPS5572355A publication Critical patent/JPS5572355A/en
Pending legal-status Critical Current

Links

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

PURPOSE: To improve strength of the phosphor film without reduction of brightness of the lamp by limitting the reaction ratio of calcium pyrophosphate to a specified value.
CONSTITUTION: The strength of a phosphor film increases reducing the reaction ratio of calcium pyrophosphate, on the other hand brightness of the lamp decreases reducing the reaction ratio in the range below 85%. The phosphor film is formed limitting the reaction ratio to the range of 85W97%. Thus the strength of the film is increased without reduction of brightness of the lamp.
COPYRIGHT: (C)1980,JPO&Japio
JP14607678A 1978-11-28 1978-11-28 Fluorescent lamp Pending JPS5572355A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14607678A JPS5572355A (en) 1978-11-28 1978-11-28 Fluorescent lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14607678A JPS5572355A (en) 1978-11-28 1978-11-28 Fluorescent lamp

Publications (1)

Publication Number Publication Date
JPS5572355A true JPS5572355A (en) 1980-05-31

Family

ID=15399553

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14607678A Pending JPS5572355A (en) 1978-11-28 1978-11-28 Fluorescent lamp

Country Status (1)

Country Link
JP (1) JPS5572355A (en)

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