JPS57162241A - Manufacture of circular fluorescent lamp - Google Patents

Manufacture of circular fluorescent lamp

Info

Publication number
JPS57162241A
JPS57162241A JP4779381A JP4779381A JPS57162241A JP S57162241 A JPS57162241 A JP S57162241A JP 4779381 A JP4779381 A JP 4779381A JP 4779381 A JP4779381 A JP 4779381A JP S57162241 A JPS57162241 A JP S57162241A
Authority
JP
Japan
Prior art keywords
bulb
chuck member
concave part
straight
manufacture
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
JP4779381A
Other languages
Japanese (ja)
Inventor
Yoichi Ikeuchi
Tsutomu Maeda
Akira Maeda
Toshiteru Tomita
Naomichi Kumagai
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.)
NIPPON DENKI SYLVANIA KK
NEC Home Electronics Ltd
Original Assignee
NIPPON DENKI SYLVANIA KK
NEC Home Electronics 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 NIPPON DENKI SYLVANIA KK, NEC Home Electronics Ltd filed Critical NIPPON DENKI SYLVANIA KK
Priority to JP4779381A priority Critical patent/JPS57162241A/en
Publication of JPS57162241A publication Critical patent/JPS57162241A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
    • H01J9/245—Manufacture or joining of vessels, leading-in conductors or bases specially adapted for gas discharge tubes or lamps
    • H01J9/247—Manufacture or joining of vessels, leading-in conductors or bases specially adapted for gas discharge tubes or lamps specially adapted for gas-discharge lamps

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

PURPOSE:To prevent any breakdown of the bulb, which might be caused during the manufacture process in which a straight bulb is curved into a circular shape, by restricting the difference between the inner diameter of a chuck member and the minimum outer diameter of the concave part of the straight bulb held with the chuck member whithin a given range. CONSTITUTION:Stem mounts 5 are fused to the ends of a straight bulb 4, and a holding concave part 6 extending along the circumference direction of the bulb 4 is formed on the outer surface of each end part of the bulb 4. Next, when the bulb 4 is hanged vertically with a chuck member 3 by fixing the chuck member 3 in the concave part 6, the bulb 4 is curved into a circular shape. Here, the difference between the inner diameter (d1) of the chuck member 3, and the minimum outer diameter (d2) of the concave part 6 of the bulb 4 held with the chuck member 3 is restricted to the range within 0.1-1.0mm..
JP4779381A 1981-03-30 1981-03-30 Manufacture of circular fluorescent lamp Pending JPS57162241A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4779381A JPS57162241A (en) 1981-03-30 1981-03-30 Manufacture of circular fluorescent lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4779381A JPS57162241A (en) 1981-03-30 1981-03-30 Manufacture of circular fluorescent lamp

Publications (1)

Publication Number Publication Date
JPS57162241A true JPS57162241A (en) 1982-10-06

Family

ID=12785245

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4779381A Pending JPS57162241A (en) 1981-03-30 1981-03-30 Manufacture of circular fluorescent lamp

Country Status (1)

Country Link
JP (1) JPS57162241A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62190634A (en) * 1986-02-17 1987-08-20 Hitachi Ltd Manufacturing device for circular fluorescent lamp

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49112472A (en) * 1973-02-28 1974-10-26
JPS52118865A (en) * 1976-03-30 1977-10-05 Nec Home Electronics Ltd Process for manufacturing circle discharge lamp

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49112472A (en) * 1973-02-28 1974-10-26
JPS52118865A (en) * 1976-03-30 1977-10-05 Nec Home Electronics Ltd Process for manufacturing circle discharge lamp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62190634A (en) * 1986-02-17 1987-08-20 Hitachi Ltd Manufacturing device for circular fluorescent lamp

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