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JPS57187855A - Bent tube type fluorescent lamp - Google Patents

Bent tube type fluorescent lamp

Info

Publication number
JPS57187855A
JPS57187855A JP7069281A JP7069281A JPS57187855A JP S57187855 A JPS57187855 A JP S57187855A JP 7069281 A JP7069281 A JP 7069281A JP 7069281 A JP7069281 A JP 7069281A JP S57187855 A JPS57187855 A JP S57187855A
Authority
JP
Japan
Prior art keywords
phosphor material
bulb
particle size
average particle
fluorescent lamp
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.)
Granted
Application number
JP7069281A
Other languages
Japanese (ja)
Other versions
JPH0216545B2 (en
Inventor
Hiroyuki Ebara
Teizo Hanada
Kenji Oda
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 JP7069281A priority Critical patent/JPS57187855A/en
Publication of JPS57187855A publication Critical patent/JPS57187855A/en
Publication of JPH0216545B2 publication Critical patent/JPH0216545B2/ja
Granted 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
    • H01J61/48—Separate coatings of different luminous materials

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

PURPOSE:To improve the strength of a bulb by employing a specific value for an average particle size of a phosphor material near the bulb side of a bent tube type fluorescent lamp having two phosphor material layers. CONSTITUTION:Two layers of phosphor material films are coated on the inner face of a bulb 1, and the first phosphor material layer 2 at the discharge passage side is made of the three-band narrow-band luminescent phosphor material with an average particle size of 4.5mu. On the other hand, the second phosphor material layer 3 at the bulb 1 side is made of, e.g., antimony-manganese - inactive halogenide - calcium phosphate phosphor material[3Ca3(PO4)2.CaFCl/ Sb.Mn]with the average particle size of 4mu. When the average particle size of the second phosphor material layer is made 5mu or less, the bulb strength is improved rapidly. This is caused by the fact that the phosphor material sinks into the bulb 1 when the bulb 1 is heated and bent, but this sinking phenomenon is reduced as the particle size of the phosphor material is decreased, as observed by a microscope.
JP7069281A 1981-05-13 1981-05-13 Bent tube type fluorescent lamp Granted JPS57187855A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7069281A JPS57187855A (en) 1981-05-13 1981-05-13 Bent tube type fluorescent lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7069281A JPS57187855A (en) 1981-05-13 1981-05-13 Bent tube type fluorescent lamp

Publications (2)

Publication Number Publication Date
JPS57187855A true JPS57187855A (en) 1982-11-18
JPH0216545B2 JPH0216545B2 (en) 1990-04-17

Family

ID=13438939

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7069281A Granted JPS57187855A (en) 1981-05-13 1981-05-13 Bent tube type fluorescent lamp

Country Status (1)

Country Link
JP (1) JPS57187855A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5134336A (en) * 1991-05-13 1992-07-28 Gte Products Corporation Fluorescent lamp having double-bore inner capillary tube
US5153479A (en) * 1991-05-13 1992-10-06 Gte Products Corporation Miniature low-wattage neon light source
US5272406A (en) * 1991-05-13 1993-12-21 Gte Products Corporation Miniature low-wattage neon light source

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5134336A (en) * 1991-05-13 1992-07-28 Gte Products Corporation Fluorescent lamp having double-bore inner capillary tube
US5153479A (en) * 1991-05-13 1992-10-06 Gte Products Corporation Miniature low-wattage neon light source
US5272406A (en) * 1991-05-13 1993-12-21 Gte Products Corporation Miniature low-wattage neon light source

Also Published As

Publication number Publication date
JPH0216545B2 (en) 1990-04-17

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