JPS5665449A - Curved fluorescent lamp and its manufacture - Google Patents

Curved fluorescent lamp and its manufacture

Info

Publication number
JPS5665449A
JPS5665449A JP14067379A JP14067379A JPS5665449A JP S5665449 A JPS5665449 A JP S5665449A JP 14067379 A JP14067379 A JP 14067379A JP 14067379 A JP14067379 A JP 14067379A JP S5665449 A JPS5665449 A JP S5665449A
Authority
JP
Japan
Prior art keywords
bulb
portions
bent
mercury vapor
curved
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
JP14067379A
Other languages
Japanese (ja)
Inventor
Genichi Hayashi
Taketo Kamei
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 JP14067379A priority Critical patent/JPS5665449A/en
Publication of JPS5665449A publication Critical patent/JPS5665449A/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
    • H01J61/24—Means for obtaining or maintaining the desired pressure within the vessel

Landscapes

  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

PURPOSE:To keep the pressure of the mercury vapor contained in a bulb constant by bending a straight bulb to form a central bent portion, and further bending both end portions into U shapes in directions almost perpendicular to a plane that includes the central bent portion, thereby forming bent end portions each having a tip position. CONSTITUTION:At both bent portions 10a, 10b of a curved bulb 10 bent-formed substantially into a saddle shepe as a whole, are provided tip portions 15, 15 so that the bent portions 10a, 10b are cooled by the environmental air which flows into a globe 4 through openings 16, 16 formed therein. Owing to the above constitution, the areas of the curved portions 10a, 10b which are exposed to the environmental air are increased, and the temperatures of these areas become lower than any other parts of the wall of the bulb 10 within the globe 4. Accordingly, the mercury vapor pressure within the bulb 10 does not becom excessively high because of the low temperatures at the tip portions 15, 15, and the density of the mercury vapor contained in the space where discharge is carried out is restricted.
JP14067379A 1979-10-31 1979-10-31 Curved fluorescent lamp and its manufacture Pending JPS5665449A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14067379A JPS5665449A (en) 1979-10-31 1979-10-31 Curved fluorescent lamp and its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14067379A JPS5665449A (en) 1979-10-31 1979-10-31 Curved fluorescent lamp and its manufacture

Publications (1)

Publication Number Publication Date
JPS5665449A true JPS5665449A (en) 1981-06-03

Family

ID=15274091

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14067379A Pending JPS5665449A (en) 1979-10-31 1979-10-31 Curved fluorescent lamp and its manufacture

Country Status (1)

Country Link
JP (1) JPS5665449A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63114039A (en) * 1987-08-21 1988-05-18 Toshiba Corp Fluorescent lamp device
JPS63225470A (en) * 1986-10-30 1988-09-20 Toshiba Corp Crooked fluorescent lamp and device using this lamp
CN102280355A (en) * 2011-08-26 2011-12-14 龚彬 Novel fluorescent lamp

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63225470A (en) * 1986-10-30 1988-09-20 Toshiba Corp Crooked fluorescent lamp and device using this lamp
JPS63114039A (en) * 1987-08-21 1988-05-18 Toshiba Corp Fluorescent lamp device
CN102280355A (en) * 2011-08-26 2011-12-14 龚彬 Novel fluorescent lamp

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