JPS56141161A - Fluorescent lamp - Google Patents

Fluorescent lamp

Info

Publication number
JPS56141161A
JPS56141161A JP4195480A JP4195480A JPS56141161A JP S56141161 A JPS56141161 A JP S56141161A JP 4195480 A JP4195480 A JP 4195480A JP 4195480 A JP4195480 A JP 4195480A JP S56141161 A JPS56141161 A JP S56141161A
Authority
JP
Japan
Prior art keywords
lamp
fluorescent lamp
permeability
density
wall
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
JP4195480A
Other languages
Japanese (ja)
Inventor
Kotaro Kawamoto
Hiroyuki Ebara
Hisami Shinra
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 JP4195480A priority Critical patent/JPS56141161A/en
Publication of JPS56141161A publication Critical patent/JPS56141161A/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
    • H01J61/44—Devices characterised by the luminescent material

Abstract

PURPOSE:To reduce the decrease in the luminous flux of a fluorescent lamp while making the tube diameter of the lamp small, and thereby increase the life of the lamp by restricting both the permeability by straight light and density of a phosphor coating formed over the glass tube of the lamp. CONSTITUTION:The inner wall of a glass bulb with an inner diameter of 24-29mm. is coated with a phosphor with a permeability by straight light of 31-38%, so that the density of the phoshor is 5.0-11.0mg/cm<2>. For the purpose of obtaining a fluorescent lamp of a higher efficiency, spherical or cubic phosphors having an optimum permeability should be applied to the inner wall of the glass bulb.
JP4195480A 1980-04-02 1980-04-02 Fluorescent lamp Pending JPS56141161A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4195480A JPS56141161A (en) 1980-04-02 1980-04-02 Fluorescent lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4195480A JPS56141161A (en) 1980-04-02 1980-04-02 Fluorescent lamp

Publications (1)

Publication Number Publication Date
JPS56141161A true JPS56141161A (en) 1981-11-04

Family

ID=12622585

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4195480A Pending JPS56141161A (en) 1980-04-02 1980-04-02 Fluorescent lamp

Country Status (1)

Country Link
JP (1) JPS56141161A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006302547A (en) * 2005-04-18 2006-11-02 Osram-Melco Ltd Fluorescent lamp
JP2011049174A (en) * 2010-10-08 2011-03-10 Osram-Melco Ltd Lighting system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006302547A (en) * 2005-04-18 2006-11-02 Osram-Melco Ltd Fluorescent lamp
JP2011049174A (en) * 2010-10-08 2011-03-10 Osram-Melco Ltd Lighting system

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