| 摘要 |
PROBLEM TO BE SOLVED: To provide an indicating lamp, which irradiates light over a wide range, and also allows a flat outer surface to be formed at an installation place without being protruded. SOLUTION: The indicating lamp has a linear light source 1, and a plurality of rugged portions formed by slopes 5a and 5b arranged in parallel. At an opposite side to the light source 1, there is disposed a prism 2 serving to form a flat surface 4. |
