JPS5788664A - Electric-discharge lamp - Google Patents

Electric-discharge lamp

Info

Publication number
JPS5788664A
JPS5788664A JP16431080A JP16431080A JPS5788664A JP S5788664 A JPS5788664 A JP S5788664A JP 16431080 A JP16431080 A JP 16431080A JP 16431080 A JP16431080 A JP 16431080A JP S5788664 A JPS5788664 A JP S5788664A
Authority
JP
Japan
Prior art keywords
inner diameter
elemental
mercury vapor
tube
glass
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.)
Granted
Application number
JP16431080A
Other languages
Japanese (ja)
Other versions
JPH021349B2 (en
Inventor
Akihiro Yonezawa
Takahiro Sugimoto
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 JP16431080A priority Critical patent/JPS5788664A/en
Publication of JPS5788664A publication Critical patent/JPS5788664A/en
Publication of JPH021349B2 publication Critical patent/JPH021349B2/ja
Granted 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

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 decrease the difference in concentration of mercury vapor, smoothen the mobility of mercury vapor, and thereby prevent any generation of the arc swing of an electric-discharge lamp, which is obtained by fusing and joining elemental tubes made of quarts glass, by restricting both the inner diameter of joining parts and the variation in the inner diameter of each elemental tube. CONSTITUTION:In making an electric-discharge lamp, the distance between the electrodes of which exceeds 100cm, by fusing quartz-glass elemental tubes 3a and 3b, the maximum inner diameter, A, and the minimum inner diameter, B, of each glass elemental tube 3a or 3b, which is within 10mm. from a joining part M along the direction of a tube axis O, are adjusted to satisfy the relationship of 0.95A<=B so as to restrict the variation in the inner diameter of the elemental tube 3a or 3b. Thus selected elemental tubes 3a and 3b are joined so that they are symmetrical with respect to the tube axis 0. The inner diameter, C, of the joining part M is restricted to be in the range of A(1+0.05)>=C>=B(1-0.05). By preparing a glass bulb in such a manner, the difference in concentration of mercury vapor is decreased, and the mobility of mercury vapor is increased. Consequently and arc swing or suppression of light can be prevented.
JP16431080A 1980-11-21 1980-11-21 Electric-discharge lamp Granted JPS5788664A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16431080A JPS5788664A (en) 1980-11-21 1980-11-21 Electric-discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16431080A JPS5788664A (en) 1980-11-21 1980-11-21 Electric-discharge lamp

Publications (2)

Publication Number Publication Date
JPS5788664A true JPS5788664A (en) 1982-06-02
JPH021349B2 JPH021349B2 (en) 1990-01-11

Family

ID=15790696

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16431080A Granted JPS5788664A (en) 1980-11-21 1980-11-21 Electric-discharge lamp

Country Status (1)

Country Link
JP (1) JPS5788664A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4833943A (en) * 1971-09-07 1973-05-15
JPS5418511A (en) * 1977-07-12 1979-02-10 Toshiba Corp Device for controlling electric motor vehicle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4833943A (en) * 1971-09-07 1973-05-15
JPS5418511A (en) * 1977-07-12 1979-02-10 Toshiba Corp Device for controlling electric motor vehicle

Also Published As

Publication number Publication date
JPH021349B2 (en) 1990-01-11

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