Problem to be solved: to provide a condition for enlarging display of the imaging image to improve safety while traveling.Control device 90 for airframe side9192A portable terminal 97 capable of communication with 93 is provided.A mode switching switch means 102 is provided for switching the automatic operation mode M1 from which the operator jumps and operates the operation of the portable terminal 97 to carry out the work running, and the manual operation mode m2 for boarding the operator by boarding the operatorTo the display portion 97A of the portable terminalA plurality of imaging means 96F disposed on the airframe96 R96 LIn a working vehicle constructed by displaying a plurality of screens around the airframe by receiving an image signal ofWhen a predetermined display screen is selected, there is provided an enlargement display function for enlarging the displayed display screen under the condition of stopping the airframe.Further, when the running of the airframe is detected while the enlargement display function is being executed, the enlarged display of a predetermined display screen is stopped and the display is switched to a plurality of screen displays.Selection diagram【課題】撮像画像の拡大表示の条件を設けて走行中の安全性向上を図る。【解決手段】機体側の制御装置９０，９１，９２，９３と通信制御可能な携帯端末９７を備え、オペレータが降車して携帯端末９７操作により作業走行を実行できる自動運転モードＭ１とオペレータが搭乗して作業走行操作を行う手動運転モードＭ２とに切り替えるモード切替スイッチ手段１０２を備え、携帯端末９７の表示部９７aに、機体に配設する複数の撮像手段９６ｆ，９６ｒ，９６Ｌ，９６Ｒの撮像信号を受けて機体周囲を複数の画面表示するよう構成した作業車両において、所定の表示画面を選択すると機体の停止を条件にこの選択した表示画面を拡大表示する拡大表示機能を備える。また、前記拡大表示機能を実行中に機体の走行を検出すると所定の表示画面の拡大表示を停止し複数の画面表示に切替わる構成とする。【選択図】図１４
