| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide method, apparatus, and system for illuminating stairs that are readily applied to make each step easily recognized in a dark room, and stairs using the same. SOLUTION: The illumination method is to provide each step with an illumination device to illuminate the central region of the step. The mounting method is to insert an illumination device including a resilient body such as spring into a hole formed in the riser between the steps.</p> |
