JPS5753058A - Curved tube type fluorescent lamp - Google Patents

Curved tube type fluorescent lamp

Info

Publication number
JPS5753058A
JPS5753058A JP12834280A JP12834280A JPS5753058A JP S5753058 A JPS5753058 A JP S5753058A JP 12834280 A JP12834280 A JP 12834280A JP 12834280 A JP12834280 A JP 12834280A JP S5753058 A JPS5753058 A JP S5753058A
Authority
JP
Japan
Prior art keywords
tube type
curved tube
fluorescent lamp
bulb
inside diameter
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
JP12834280A
Other languages
Japanese (ja)
Inventor
Kenji Oda
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 JP12834280A priority Critical patent/JPS5753058A/en
Publication of JPS5753058A publication Critical patent/JPS5753058A/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

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

PURPOSE:To secure the degree of vacuum inside a curved tube type fluorescent lamp and improve the characteristics of the lamp, by setting the ratio of the inside diameter of a curved tube type bulb to the inside diameter of an exhaust pipe within a predetermined range. CONSTITUTION:In a curved tube type fluorescent lamp curved into a saddle-like shape, the ratio of the inside diameter dB of the bulb 18, to the inside diameter dE of an exhaust pipe 23 communirated to the inside of a curved tube type bulb 18, that is, dE/dB, is set within the range of 13-30%. Thus, the degree of vacuum equal to a general straight tube type or circular fluorescent lamp can be secured without using any particulary large exhaust device in spite of large conductance at the time of substituting gas in the bulb 18. Thereby, the characteristics of the lamp can be improved without any bad effect to a lumen maintenance factor, the starting characteristics of the like.
JP12834280A 1980-09-16 1980-09-16 Curved tube type fluorescent lamp Pending JPS5753058A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12834280A JPS5753058A (en) 1980-09-16 1980-09-16 Curved tube type fluorescent lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12834280A JPS5753058A (en) 1980-09-16 1980-09-16 Curved tube type fluorescent lamp

Publications (1)

Publication Number Publication Date
JPS5753058A true JPS5753058A (en) 1982-03-29

Family

ID=14982424

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12834280A Pending JPS5753058A (en) 1980-09-16 1980-09-16 Curved tube type fluorescent lamp

Country Status (1)

Country Link
JP (1) JPS5753058A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5016150A (en) * 1989-10-19 1991-05-14 Musco Corporation Means and method for increasing output, efficiency, and flexibility of use of an arc lamp
US5134557A (en) * 1989-10-19 1992-07-28 Musco Corporation Means and method for increasing output, efficiency, and flexibility of use of an arc lamp
US5161883A (en) * 1989-10-19 1992-11-10 Musco Corporation Means and method for increasing output, efficiency, and flexibility of use of an arc lamp
US5229681A (en) * 1989-10-10 1993-07-20 Musco Corporation Discharge lamp with offset or tilted arc tube
US5860733A (en) * 1995-04-17 1999-01-19 Musco Corporation Light fixture with controllable light block
US7227303B2 (en) * 2003-04-16 2007-06-05 General Electric Company Method for forming cold spot region and discharge lamp with such cold spot region

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5229681A (en) * 1989-10-10 1993-07-20 Musco Corporation Discharge lamp with offset or tilted arc tube
US5016150A (en) * 1989-10-19 1991-05-14 Musco Corporation Means and method for increasing output, efficiency, and flexibility of use of an arc lamp
US5134557A (en) * 1989-10-19 1992-07-28 Musco Corporation Means and method for increasing output, efficiency, and flexibility of use of an arc lamp
US5161883A (en) * 1989-10-19 1992-11-10 Musco Corporation Means and method for increasing output, efficiency, and flexibility of use of an arc lamp
US5860733A (en) * 1995-04-17 1999-01-19 Musco Corporation Light fixture with controllable light block
US7227303B2 (en) * 2003-04-16 2007-06-05 General Electric Company Method for forming cold spot region and discharge lamp with such cold spot region

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