PROBLEM TO BE SOLVED: To provide a grass collecting full detection device for accurately detecting that a grass collecting container is full. SOLUTION: This is a grass collecting full detection device for detecting a full state of a grass collecting container 32 for storing cut grass cut by a grass cutting device 20, and the amount of cut grass for calibrating the cut grass stored in the grass collecting container 32. The detection unit 60, the notification unit 51, the timer 54, and the cut grass amount detection unit 60 cause the timer 54 to measure the time after detecting a predetermined amount of cut grass, and the cut grass amount detection unit 60 measures the predetermined amount. When the cut grass is continuously detected for a predetermined time, the notification unit 51 is provided with a control unit 53 to notify the alarm. [Selection diagram] FIG. 9【課題】集草容器が満杯になったことを、正確に検出する集草満杯検出装置を提供する。【解決手段】草刈装置２０が刈り取った刈り草を貯留する集草容器３２の満杯状態を検出する集草満杯検出装置であって、集草容器３２に貯留される刈り草を検量する刈り草量検出部６０と、報知部５１と、タイマー５４と、刈り草量検出部６０が所定量の刈り草を検知してからの時間をタイマー５４に測定させ、刈り草量検出部６０が所定量の刈り草を所定時間継続して検知すると、報知部５１に警報を報知させる制御部５３とを備える。【選択図】図９
