Monitoring image display device of industrial machine

A hydraulic excavator comprising:

• a revolving upperstructure;
• a catwalk provided so as to jut outward from the revolving upperstructure along a side of the revolving upperstructure;
• a cab installed in a forward position of the revolving upperstructure;
• a ladder installed in a rearward position of the revolving upperstructure;
• a plurality of monitoring cameras provided in a revolving range defined by a revolving radius of the revolving upperstructure and monitoring surroundings of the revolving upperstructure;
• a display controller configured to generate a display image from images captured by the plurality of monitoring cameras;
• a monitor for displaying the display image generated by the display controller;
• a first empty space existing between the cab and crawler belts forming a lower travel base;
• and
• a second empty space existing at a lower position of the ladder,
• wherein the plurality of monitoring cameras include:
• a front camera mounted to a first support arm jutted from a front of the revolving upperstructure;
• a left camera located above and in front of the catwalk and mounted to a second support arm jutted from a main unit of the revolving upperstructure in a lateral direction and outward from an outer side of the catwalk within the revolving range defined by the revolving radius of the revolving upperstructure, the left camera having a field of view covering the first empty space existing between the cab and the crawler belts;
• a right camera located above the catwalk and mounted to a third support arm jutted from the main unit of the revolving upperstructure in the lateral direction and outward from an outer side of the catwalk within the revolving range defined by the revolving radius of the revolving upperstructure;
• and
• a rear camera mounted to a position on an upper portion of a counterweight provided at a tail end of the revolving upperstructure and having a field of view covering the second empty space existing at the lower position of the ladder, and
• wherein the display controller is further configured to:
• generate top view images looking downward,
• generate an icon image representing a planar image of the hydraulic excavator with an outline of the hydraulic excavator being shown in a graphic form,
• execute composite processing to arrange the top view images around the icon image, and
• display the top-view images on the monitor to include a part of a section hidden within a display region of the icon image.