| 摘要 |
PROBLEM TO BE SOLVED: To accurately and easily determine whether a worker or the like imaged on a monitor screen enters a swing motion area or not, thereby improving operability and safety during swinging work.SOLUTION: A side monitoring camera 10 is installed at the side of an upper swing body 3 swingingly mounted to a lower traveling body 2. A monitor 8 displaying an image photographed by the side-monitoring camera 10 is mounted in a cabin 5. A synthesized-display part 11 is incorporated in the side-monitoring camera 10, so that the synthesized-display part 11 synthetically display an arc-shaped borderline S clearly indicating the swing motion area of the upper swing body 3 on the monitor screen 8A. |
