Electric light bulb and coating method of electric light bulb

摘要

An electric light bulb that minimizes peeling of the coating, suppresses reduction of the number of light fluxes, and is easy to manufacture is described. The electric light bulb 1 has a glass bulb 2 having a straight tube 2a and a leading edge portion 2b that is continuous with the straight tube. A blue coating 5 is applied onto the straight tube, and a white or silver shield coating 6 is applied onto the leading end portion 2b.