| 摘要 |
PROBLEM TO BE SOLVED: To expand the visual angle in a horizontal direction and to improve visibility. SOLUTION: A main unit 1 includes plural light emitter columns 4a arranged in juxtaposition on a light emitter substrate 2 and plural transmissible lenses 5 which are disposed at every light emitter of these columns so as to cover the light emitting surfaces thereof and have directional characteristics to macroproject the light from the light emitters 4 in the direction along the columns 4a. The substrate 2 is installed in the direction where the light emitter columns 4a are horizontal, by which the light from the light emitters 4 are macroprojected in the direction along the light emitter columns 4a, i.e., horizontal direction by the lenses 3. |
