JPS5512610A - Manufacture of fluorescent lamp - Google Patents

Manufacture of fluorescent lamp

Info

Publication number
JPS5512610A
JPS5512610A JP8455378A JP8455378A JPS5512610A JP S5512610 A JPS5512610 A JP S5512610A JP 8455378 A JP8455378 A JP 8455378A JP 8455378 A JP8455378 A JP 8455378A JP S5512610 A JPS5512610 A JP S5512610A
Authority
JP
Japan
Prior art keywords
gas
fluorescent lamp
temperature
keeping
darkening
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
JP8455378A
Other languages
Japanese (ja)
Inventor
Akimasa Kondo
Noriyoshi Kikuchi
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 JP8455378A priority Critical patent/JPS5512610A/en
Publication of JPS5512610A publication Critical patent/JPS5512610A/en
Pending legal-status Critical Current

Links

Landscapes

  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

PURPOSE: To lessen darkening by reducing the adsorption of impure gas onto fluorescent substance by keeping the temperature of lamp heating in the activation process at a temperature lower than of gas exhaustion process.
CONSTITUTION: A fluorescent lamp into which filaments coated with an alkaline earth metal carbonate are confined is heated at 450 to 500°C while exhausting waste gas to remove adsorbed gas, and then the filaments are electrically energized while keeping the fluorescent lamp at a temperature (300°C) lower than that of the gas exhaustion process in order to decompose carbonate for activation. Thus, the relative value B of luminous flux maintenance rate A and darkening degree to lighting time is made better.
COPYRIGHT: (C)1980,JPO&Japio
JP8455378A 1978-07-13 1978-07-13 Manufacture of fluorescent lamp Pending JPS5512610A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8455378A JPS5512610A (en) 1978-07-13 1978-07-13 Manufacture of fluorescent lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8455378A JPS5512610A (en) 1978-07-13 1978-07-13 Manufacture of fluorescent lamp

Publications (1)

Publication Number Publication Date
JPS5512610A true JPS5512610A (en) 1980-01-29

Family

ID=13833825

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8455378A Pending JPS5512610A (en) 1978-07-13 1978-07-13 Manufacture of fluorescent lamp

Country Status (1)

Country Link
JP (1) JPS5512610A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4898554A (en) * 1988-04-22 1990-02-06 Tungsram Reszvenytarsasag Method of and equipment for ageing a low-pressure hot-cathode discharge light source, particularly a fluorescent lamp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4898554A (en) * 1988-04-22 1990-02-06 Tungsram Reszvenytarsasag Method of and equipment for ageing a low-pressure hot-cathode discharge light source, particularly a fluorescent lamp

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