Display device for self-propelled industrial machine

The purpose of the present invention is to display the understructure of a self-propelled industrial machine on a display device provided in the drivers cab of the self-propelled industrial machine and support the driving operations for the self-propelled industrial machine. The display device for a self-propelled industrial machine according to the present invention is equipped with: a camera (10) that is provided in a dump truck (1) and includes the understructure of the dump truck (1) in the field of vision thereof; a symbol image holding unit (24) that holds a symbol image (31) of the dump truck (1) represented as symbol; a superimposition processing unit (25) that performs processing to treat an area of the symbol image (31) of the understructure of the dump truck (1) included in the field of vision of the camera (10) as a transparent area (33), make the transparent area (33) transparent to a given transparency, and superimpose as an understructure image (34) an area of the image captured by the camera (10) that corresponds to the transparent area (33); and a screen unit (15), provided in the drivers cab (2) of the dump truck (1), that displays the symbol image (31) that was subjected to superimposition by the superimposition processing unit (25).