| 摘要 |
PROBLEM TO BE SOLVED: To enable to prevent light from being irradiated onto a glass piece with an anchor for bridging a filament fixed by positioning it in a concave part of a base fixed at a sealing part, or enable to prevent light reflected at the glass piece or transmitted through the glass piece from being irradiated toward an illumination region even if light is irradiated on the glass piece, so as to make an illumination distribution gradually decrease luminance as distancing from a center of the illumination region. SOLUTION: In the incandescent lamp A, a filament 2 is arranged in a bulb 1 with a sealing part 11 formed at an end and an exhaust pipe remaining part formed at the other end, the filament 2 is bridged by an anchor 5 fixed to a glass piece 4 arranged on the sealing part 11 side in the bulb 1, and the sealing part 11 is inserted into a concave part of the base and fixed by an adhesive 7. The glass piece 4 is placed inside the concave part 61 of the base 7. COPYRIGHT: (C)2008,JPO&INPIT
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