To obtain a simplified photoelectric conversion system accumulator which can be safety used in the case of emergency, by installing a man-power carriage system installation part, having photoelectric transducers en bloc, and an accumulator part connected with the photoelectric transducers.

On the upper surface of the pent-roof 14 of a sun visor 11, solar cell elements 1 are arranged, and solar battery modules 10 are arranged which are connected in parallel or in series. Each of the elements in the solar battery module 10 is connected with wirings 16a, 16b, introduced in the inside of the sun visor main body 12, and led out to a lead wire 18. A connector 19 is fixed to the tip of the lead 18. A lead wire 28 to which a connector 29 is fixed is installed in a receiver 20, and the connector 19 of the lead wire 18 is detachably connected with the connector 29. The electromotive force due to the electric energy generated by photoelectric conversion is stored in a battery included in the receiver 20.