Technical Issues on the Electronic Compact Fluorescent Lamp Covered with a Diffusive Glass Globe

Abstract

A great number of various electronic compact fluorescent lamps (CFLs) have been developed in the whole world. Although most of them are globeless type, general consumers in Japan have not yet completely got used to the naked light tubes, and they also have a tendency to prefer brighter lamps. Thus, we have developed the 23W electronic CFL with a diffusive glass globe, which generates 1370 lm on 100V main supply and can be substituted for a 100W ball shaped incandescent lamp. In this paper, we explain the structure and the characteristics of this lamp, and also discuss some important technical issues which are the way to control the mercury vapor pressure by using amalgam and to keep safety at the end of life.