| 摘要 |
PURPOSE:To make useful each one of low beams or high beams even when the other is broken, and switch the two high beams substantially at the same time, by providing relay circuits at two terminals of a generator in a generator lamp used for a bicycle. CONSTITUTION:When generating current of a generator 21 is small at a low speed of a bicycle, current is supplied through NC terminals of relay contact points 26a and 26b to low beams 27 and 28. When the generating current of the generator 21 becomes large at a high speed of the bicycle, large current flows in a relay coil 24. At this time, the relay contact point 26b connected to the relay coil 24 is released from the NC terminal earlier than the relay contact point 26a. When the relay contact point 26b is slightly separated from the NC terminal, voltage of the relay coil 24 is rapidly increased, and an attractive force is increased to switch the relay contact points 26a and 26b to NO terminals. As a result, both of high beams 29 and 30 are simultaneously switched. |
