| 摘要 |
PROBLEM TO BE SOLVED: To provide a display method equivalent to that obtained by using a battery or an electrical component without using such a component in a bicycle travel display device. SOLUTION: When an electrical component is used for giving a display a high degree computing function such as a microcomputer is required. Instead of the high degree computing function, a wheel provided with a distance-cum- speed measuring disc (or a wheel provided with a distance-cum-speed measuring small disc) 1 is installed, and a rotating element is brought into contact with it. From the rotation of the rotating element, a traveling distance or a traveling speed is read via a display panel. |
