| 摘要 |
PROBLEM TO BE SOLVED: To provide a lighting fixture unit in which a laser beam is not radiated to the outside of a vehicle even if a fluorescent body is released or the like, while solving a problem that, in a conventional lighting fixture, a laser beam being a high-energy beam is wavelength-converted to a white light beam by the fluorescent body, thus preventing the laser beam from being radiated to a front side of the vehicle while being retained as the high-energy beam, however, when the fluorescent body is released or damaged, the laser beam is radiated to the outside of the vehicle as it is, and which also prevents the adhesion of a color shade at the wavelength conversion.SOLUTION: In a lighting fixture, a first fluorescent body 9 which wavelength-converts a laser beam from a semiconductor laser element 5, and a second fluorescent body 21 arranged between the first fluorescent body 9 and a reflector and composed of a material which is the same with or similar to the first fluorescent body 9 are arranged. Even if the first fluorescent body 9 is released, a laser beam which has not been wavelength-converted to a white light beam arrives at the second fluorescent body 21, and is wavelength-converted. Furthermore, a color shade is eliminated by making a light beam which is not sufficiently wavelength-converted merely by contacting with the first fluorescent body 9 and has the color shade, also contact with the second fluorescent body 21.SELECTED DRAWING: Figure 1 |
