ELECTRIC LAMP COVER, ILLUMINANT AND METHOD FOR FORMING ELECTRIC LAMP COVER

摘要

PROBLEM TO BE SOLVED: To maintain commercial values and effectively suppress cost increase. SOLUTION: This electric lamp cover is constituted of a bottomed cylinder 140 formed of a resilient polymer having transparency and having an opening 141. The cylinder 140 has a first area 143 and a second area 144 divided in the circumferential direction and having different colors each other and has linear projections 145 and hemispheric projections 146 on the inner periphery surface for forming predetermined gaps relative to a light emitting part of an incandescent lamp.