| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent sudden lights-out of a headlamp, and to impart a time allowance to cope with the lights-out by putting out the headlamp by gradually dimming quantity of light of the headlamp when putting out the headlamp since a control circuit judges that the lights-out is required on the basis of an input signal from a sensor. SOLUTION: Since an electric current is continuously supplied to a headlamp 6 by electric charge stored in a capacitor C during timeτ2=C.R decided by capacitance C of the capacitor C and resistance R, the headlamp 6 is continuously lighted without being suddenly put out. The quantity of light is gradually dimmed, the headlamp 6 gradually darkens, and is completely put out when the timeτ2 passes. Thus, a rider can properly cope with lights-out during that time. Similarly, even when some abnormality is caused in a light sensor 31 and a vibration sensor 32, the headlamp 6 is not suddenly put out, and the quantity of light of the headlamp 6 is gradually reduced to impart a time allowance to the rider to cope with the lights-out.</p> |
