PROBLEM TO BE SOLVED: To provide a power-supplying device for a working vehicle, capable of well performing the action of each of parts even after the continuation of not used state of the working vehicle for a long period of time by effectively utilizing the power generated by a power generator included in the working vehicle.SOLUTION: This power-supplying device is constituted by supplying the power from a power source part DG constituted with a power generator 61 driven by an engine 4 included in a vehicle body and a rectifying circuit 63 for converting the power output by the power generator 61 to direct current, to a solenoid 34 directly through a power-supplying route 64, and also supplying the power to a controller 28 from a branched power-supplying route 70 branching at the upstream position of the solenoid 34 in the power-supplying route 64 through regulator circuits 83, 85 and including a voltage-stabilizing circuit 86 for the controller 28 during the route from the branched power-supplying route 70 to the controller 28.COPYRIGHT: (C)2013,JPO&INPIT【課題】作業車に装備される発電機にて発電される電力を有効利用して、長期間にわたって作業車の不使用状態が続いた後においても、各部の作動を良好に行わせることが可能となる作業車用の電源供給装置を提供する。【解決手段】車体に備えられたエンジン4にて駆動される発電機61と、その発電機61により出力された電力を直流に変換する整流回路63とで構成された電源部DGから、電力供給路64を通してソレノイド34に電力をそのまま供給し、電力供給路64におけるソレノイド34の上流側箇所より分岐する分岐電力供給路70からレギュレータ回路83,85を介して制御手段28に電力を供給するように構成され、分岐電力供給路70から制御手段28に至る経路中に制御手段用の電圧安定化回路86が備えられる。【選択図】図13