JPS5665451A - Curved fluorescent lamp and its manufacture - Google Patents

Curved fluorescent lamp and its manufacture

Info

Publication number
JPS5665451A
JPS5665451A JP14068279A JP14068279A JPS5665451A JP S5665451 A JPS5665451 A JP S5665451A JP 14068279 A JP14068279 A JP 14068279A JP 14068279 A JP14068279 A JP 14068279A JP S5665451 A JPS5665451 A JP S5665451A
Authority
JP
Japan
Prior art keywords
bulb
tip
curved
central portion
bent
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
JP14068279A
Other languages
Japanese (ja)
Inventor
Koshiro Sugibuchi
Kinji Kaneko
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 JP14068279A priority Critical patent/JPS5665451A/en
Publication of JPS5665451A publication Critical patent/JPS5665451A/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
    • H01J61/30—Vessels; Containers
    • H01J61/32—Special longitudinal shape, e.g. for advertising purposes
    • H01J61/327—"Compact"-lamps, i.e. lamps having a folded discharge path

Landscapes

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

Abstract

PURPOSE:To maintain an optimum mercury-vapor pressure within a bulb by bending a straight bulb into a curved bulb with a bent central portion, and curved ends each of which has a U-shpaed curve and is almost perpendicular to the plane that includes the bent center portion, and providing the bent central portion with a pair of tips. CONSTITUTION:A straight bulb is bent into a curved bulb with a bent central portion 10a, and curved ends which has U-shaped curves 10b, 10b and are almost perpendicular to the plane that includes the bent central portion of the curved bulb. An exhaust pipe 21, which is parallel to the opening ends of the bulb, is provided at the bent central portion of the bulb. After evacuating any air remaining in the bulb and charging a gas into the bulb, the pipe 21 is converted into a tip 15. Owing to the above arrangement, the tip 15 provided on the bent central portion 10a of the curved bulb 10 is shielded from the heat of a globe 4, and the tip 15 is cooled by the environmental air flowing into a base 1 through a hole 14. Thus, the temperature of the tip 15 becomes lower than any other part of the wall of the bulb 10. Accordingly, the mercury-vapor pressure within the bulb 10 does not become high since the mercury vapor is condensed at the tip 15 because of the low temperature of the tip 15.
JP14068279A 1979-10-31 1979-10-31 Curved fluorescent lamp and its manufacture Pending JPS5665451A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14068279A JPS5665451A (en) 1979-10-31 1979-10-31 Curved fluorescent lamp and its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14068279A JPS5665451A (en) 1979-10-31 1979-10-31 Curved fluorescent lamp and its manufacture

Publications (1)

Publication Number Publication Date
JPS5665451A true JPS5665451A (en) 1981-06-03

Family

ID=15274296

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14068279A Pending JPS5665451A (en) 1979-10-31 1979-10-31 Curved fluorescent lamp and its manufacture

Country Status (1)

Country Link
JP (1) JPS5665451A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6178043A (en) * 1984-09-25 1986-04-21 Matsushita Electric Works Ltd Fluorescent lamp
EP1341208A2 (en) * 1997-06-11 2003-09-03 Toshiba Lighting & Technology Corporation Compact, self-ballasted fluorescent lamp and luminaire

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55108163A (en) * 1979-02-13 1980-08-19 Westinghouse Electric Corp Electric lamp unit
JPS6215967U (en) * 1985-07-12 1987-01-30

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55108163A (en) * 1979-02-13 1980-08-19 Westinghouse Electric Corp Electric lamp unit
JPS6215967U (en) * 1985-07-12 1987-01-30

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6178043A (en) * 1984-09-25 1986-04-21 Matsushita Electric Works Ltd Fluorescent lamp
EP1341208A2 (en) * 1997-06-11 2003-09-03 Toshiba Lighting & Technology Corporation Compact, self-ballasted fluorescent lamp and luminaire
EP1341208A3 (en) * 1997-06-11 2009-08-05 Toshiba Lighting & Technology Corporation Compact, self-ballasted fluorescent lamp and luminaire

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