Phenomenon of end of life in a fluorescent lamp under high-frequency operation
Journal of the Illuminating Engineering Institute of Japan Volume 87 Issue 8A
Page 566-575
published_at 2003-08
Title
高周波点灯時における蛍光ランプの寿命末期現象
Phenomenon of end of life in a fluorescent lamp under high-frequency operation
Creators
Myojo Minoru
Creators
Fukumasa Osamu
Creator Keywords
fluorescent lamp
end of lamp life (EOLL)
emissive material (coating)
depletion
electrode
filament
electronic ballast
electron emission
alkali metal adsorption
adsorbate
The mechanism that causes the end of lamp life (EOLL) phenomenon in a fluorescent lamp should be clarified to better understand the EOLL. The phenomenon, including the tungsten sputtering from an electrode, is investigated. We observed the electron emission from a lead in the vicinity of the stem glass resulting in the intermittent pulse discharge that heated up the stem glass. The comparison of the stem glass resistance and the glow discharge impedance at an interval of leads after disconnection of the filament indicates whether or not the stem glass will begin to soften. It was shown that the heating of a small glass portion around the lead by the intermittent pulse discharge or the concentration of discharge current into one of leads was a dominant factor that resulted in the final stage of EOLL..
Languages
jpn
Resource Type
journal article
Publishers
照明学会
Date Issued
2003-08
File Version
Version of Record
Access Rights
open access
Relations
[ISSN]0019-2341
[NCID]AN00268860
[isPartOf]
[URI]http://ci.nii.ac.jp/vol_issue/nels/AN00268860_jp.html
Schools
大学院理工学研究科（工学）