To effectively prevent the glare, reduce a loss in illuminance, and prevent the degradation of a light distribution characteristic by arranging a light shielding body to prevent the direct light from a light emitting part from reaching this transparent protective plate, in a part of the front transparent protective plate

This bulb having a reflector 10 has a tungsten halogen lamp 12 whose base end part 12a is sealed by a pinch and a bowl-shaped reflector 14 to house the base end part 12a of this tungsten halogen lamp 12 in a base part opening 14a. A bottomed cylindrical light shielding body 30 to cover the tip side of a cylindrical main body part 12b of the tungusten halogen lamp 12, is arranged so that a bottom part is fixed to an almost central part of an inside surface of a protective glass plate 25. The rear edge (the lower side peripheral edge) of this light shielding body 30 has the positional relationship such as the direct light from the rear end of a filament 20 does not reach forward more than the front side peripheral edge 14c of the reflector 14. Since the direct light from the filament 20 is not radiated outside the reflector 14 through the protective glass plate 25, the glare is prevented, and a loss in illuminance is reduced.