| 摘要 |
<p>PURPOSE:To prevent the waste consumption of the generated electric power, and to secure the light quantity sufficient for both the time of high speed travelling and low speed travelling, and to prevent the generation of burning out of a lamp. CONSTITUTION:An automatic lighting system is provided with a hub dynamo 1 built in a hub, a lamp 9 for low speed at a low rated voltage, and a lamp 10 for high speed at a high rated voltage, and the system is also provided with a voltage judging unit 8 for comparing the set voltage to be decided in response to the two kinds of rated voltage with the generated voltage of the hub dynamo 1 and for outputting a result of the comparison. The system is provided with a lamp switching unit 7 for supplying the generated power of the hub dynamo 1 to the lamp 9 for low speed in the case where the generated voltage is lower than the set voltage and for supplying the generated power to the lamp 10 for high speed in the case where the generated voltage is higher than the set voltage, and provided with a lighting control unit 6 for turning off the lamp 9 for low speed and the lamp 10 for high speed in the case where the peripheral illuminance is higher than the preset illuminance is provided.</p> |
