A STUDY OH THE VARIATION OF INCANDESCENT LAMP CHARACTERISTICS BY MEANS OF THE SHAPE OF FILAMENT

필라멘트의 형상에 따른 백열전구 특성변화에 관한 연구

Generally an incandescent lamp is made in the bulb with a horizontal position filament. In this paper the position of filament was changed Into a vortical position. When the position of filament is changed into a vertical position, efficacy is increased and color rendering is somewhat improved. In this subject the heat loss by a filling gas is important. The heat loss by a filling gas was calculated theoretically. The results in an Incandescent lamp experiment can be analyzed through the heat loss by a filling gas. As a filling gas the mixture of argon and nitrogen is used. The variation of lamp characteristics by the shape of filament rill be considered. The change by filament position to a vortical position is required in the field of power consumption saving of lighting system.