| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an electric power assist bicycle preventing a discomfort feeling caused by an operation part of an operation panel and preventing waste of a battery.SOLUTION: An electric power assist bicycle is equipped with an operation panel 100. The operation panel 100 comprises: an information display part 101; an operation part 102; a back light for the information display part 101; a back light for the operation part 102; illuminance measurement means 103; and illuminance determination means which compares the illuminance I measured by the illuminance measurement means 103 with a determination reference illuminance Is and determines the magnitude relation. When the illuminance determination means determines the relation to be I≤Is, the back light for the operation part 102 is lighted, and when the illuminance determination means determines the relation to be I>Is, the back light for the operation part 102 is put out.</p> |
