JPS5684845A - Encapsulating method for fluorescent discharge tube - Google Patents

Encapsulating method for fluorescent discharge tube

Info

Publication number
JPS5684845A
JPS5684845A JP16211679A JP16211679A JPS5684845A JP S5684845 A JPS5684845 A JP S5684845A JP 16211679 A JP16211679 A JP 16211679A JP 16211679 A JP16211679 A JP 16211679A JP S5684845 A JPS5684845 A JP S5684845A
Authority
JP
Japan
Prior art keywords
stem
fluorescent
tube
flare
discharge tube
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
JP16211679A
Other languages
Japanese (ja)
Inventor
Hiroshi Furuumi
Mikio Ouchi
Zennosuke Mitani
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.)
NIPPO DENKI KK
NITSUPO DENKI KK
Original Assignee
NIPPO DENKI KK
NITSUPO DENKI KK
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 NIPPO DENKI KK, NITSUPO DENKI KK filed Critical NIPPO DENKI KK
Priority to JP16211679A priority Critical patent/JPS5684845A/en
Publication of JPS5684845A publication Critical patent/JPS5684845A/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

Abstract

PURPOSE:To encapsulate a fluorescent tube reliably, by employing specific dimension for a button stem, thereby eliminating the defective encapsulation. CONSTITUTION:The stem flare diameter d of a buttom stem 1 is selected in such a way that it will come within 75-98% of the inner diameter A of a fluorescent discharge tube, while the taper angle theta of the stem flare is set between 10 deg.-60 deg.. When setting d/A within the said range, proper squeezing at the end of the fluorescent discharging tube is obtained, while, when setting the taper angle within the said range, excessive fusing of the stem flare can be prevented. Furthermore, when making the stem length H to be 0.8-4 times of the thickness (t) of the fluorescent tube glass, the thermal strength and the mechanical strength are improved to prevent the thermal distortion. With such arrangement, the defective encapsulation is eliminated and the fluorescent tube can be encapsulated reliably.
JP16211679A 1979-12-13 1979-12-13 Encapsulating method for fluorescent discharge tube Pending JPS5684845A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16211679A JPS5684845A (en) 1979-12-13 1979-12-13 Encapsulating method for fluorescent discharge tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16211679A JPS5684845A (en) 1979-12-13 1979-12-13 Encapsulating method for fluorescent discharge tube

Publications (1)

Publication Number Publication Date
JPS5684845A true JPS5684845A (en) 1981-07-10

Family

ID=15748338

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16211679A Pending JPS5684845A (en) 1979-12-13 1979-12-13 Encapsulating method for fluorescent discharge tube

Country Status (1)

Country Link
JP (1) JPS5684845A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6210836A (en) * 1985-07-05 1987-01-19 Stanley Electric Co Ltd Stem sealing method for slimline type lamp

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4946435A (en) * 1972-09-06 1974-05-04

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4946435A (en) * 1972-09-06 1974-05-04

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6210836A (en) * 1985-07-05 1987-01-19 Stanley Electric Co Ltd Stem sealing method for slimline type lamp

Similar Documents

Publication Publication Date Title
JPS5684845A (en) Encapsulating method for fluorescent discharge tube
GB1216522A (en) Zone-by-zone melting a rod
JPS56160753A (en) Fluorescent bulb and manufacturing method
ES274832A1 (en) Cathode ray tube and method of making same
JPS56152274A (en) Manufacture of lens cap for photosemiconductor
JPS5497083A (en) Clamp device for tube tensile test
JPS56167246A (en) X-ray image intensifier and its manufacturing method
JPS5328437A (en) Preparation of terminal metal member for optical fiber connector
JPS569251A (en) Manufacture of cathode-ray tube
JPS5490873A (en) Method of sealing tubular quarz bulb
JPS5533674A (en) Temperature measuring resistor
JPS54139280A (en) Nethod of fabricating annular fluorescent lamp
JPS554560A (en) Production of thermistor high temperature detector
JPS54104677A (en) Lamp bulb
JPS5374353A (en) Manufacturing device for electron tube helix
JPS5559639A (en) Planar indicating tube and its manufacturing method
JPS5798954A (en) Manufacture of stem for electron tube
JPS57152155A (en) Manufacture of air-tight terminal
JPS56109452A (en) Preparation of cap-shaped gasket for cylindrical battery
JPS5574047A (en) Color camera tube
JPS57132645A (en) Cathode-ray tube
JPS5282878A (en) Method of automatically attaching filament
JPS57194553A (en) Semiconductor device
JPS5751609A (en) Manufacture of screw for screw conveyor
JPS5210668A (en) Process of cathode ray tube