JPS5720080A - Manufacture of annular fluorescent lamp - Google Patents

Manufacture of annular fluorescent lamp

Info

Publication number
JPS5720080A
JPS5720080A JP9463780A JP9463780A JPS5720080A JP S5720080 A JPS5720080 A JP S5720080A JP 9463780 A JP9463780 A JP 9463780A JP 9463780 A JP9463780 A JP 9463780A JP S5720080 A JPS5720080 A JP S5720080A
Authority
JP
Japan
Prior art keywords
bulb
curving
strain
exhaust pipe
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
JP9463780A
Other languages
Japanese (ja)
Inventor
Osamu Matsubara
Toshiteru Tomita
Yoichi Ikeuchi
Naomichi Kumagai
Akira Maeda
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 JP9463780A priority Critical patent/JPS5720080A/en
Publication of JPS5720080A publication Critical patent/JPS5720080A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/16—Picture reproducers using cathode ray tubes
    • H04N9/22—Picture reproducers using cathode ray tubes using the same beam for more than one primary colour information
    • H04N9/24—Picture reproducers using cathode ray tubes using the same beam for more than one primary colour information using means, integral with, or external to, the tube, for producing signal indicating instantaneous beam position

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

PURPOSE:To prevent cracking and destruction due to it, by heating the circumference of the side end of an exhaust pipe, where strain is easy to occur during the curving of a bulb, by using a heating means such as a gas burner. CONSTITUTION:In curving a bulb 3, high-temperature air 12 obtained by a heating device is blown to the side end of the exhaust pipe 4 of the bulb 3 and at the same time, the other end is chucked on a curving roller 6 to wind the bulb in an annular shape. On the completion of the curving, blowing of the high-temperature air 12 is stopped and the bulb 3 is cooled to harden. In this way, the bulb 3, while kept softened from the beginning to the end of curving, is curved, so strain is hard to occur preventing cracking and destruction even when the sealing part of the bulb is of a glass-molding type which does not use a metal disk.
JP9463780A 1980-07-10 1980-07-10 Manufacture of annular fluorescent lamp Pending JPS5720080A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9463780A JPS5720080A (en) 1980-07-10 1980-07-10 Manufacture of annular fluorescent lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9463780A JPS5720080A (en) 1980-07-10 1980-07-10 Manufacture of annular fluorescent lamp

Publications (1)

Publication Number Publication Date
JPS5720080A true JPS5720080A (en) 1982-02-02

Family

ID=14115777

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9463780A Pending JPS5720080A (en) 1980-07-10 1980-07-10 Manufacture of annular fluorescent lamp

Country Status (1)

Country Link
JP (1) JPS5720080A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58204438A (en) * 1982-05-24 1983-11-29 Toshiba Corp Manufacturing device for ring type fluorescent lamp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58204438A (en) * 1982-05-24 1983-11-29 Toshiba Corp Manufacturing device for ring type fluorescent lamp

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