Tubular incandescent lamp

Details Tubular incandescent lamp Tubular incandescent lamp

H - Electricity

01

K

313/172.11

H01K 1/18 (2006.01) H01K 1/24 (2006.01)

Patent

CA 1119235

ABSTRACT OF THE DISCLOSURE In a long, tubular incandescent lamp which has incorporated therein a filament formed by coupling light emitting segments and non- light-emitting segments alternately with each other, each of the light emitting segments is composed of a light emitting coil and a coil-like coupling member of a larger pitch than the light emitting coil, and each of the non-light-emitting segments is composed of a bar formed to have a straight short-circuit part, bent portions at both ends thereof and supports respectively extending from the bent portions. The short- circuit part is inserted into the coil-like coupling member and they are welded to each other to obtain the filament composed of the light emitting and the non-light-emitting segments coupled alternately with each other. The filament is sealed in the long, tubular bulb; thus, a simple-structured and highly shock resistant incandescent lamp can easily be obtained.

334014

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