Monitoring image display device of industrial machine

Abstract

In an industrial machine, the work safety is further improved by eliminating blind spots from an image displayed on a monitor. A hydraulic excavator 1 which is the industrial machine is equipped with monitoring cameras 15 F, 15 B, 15 L, 15 R mounted in the respective places of a revolving upperstructure 3 in order to capture images for monitoring. A monitor 20 displays camera images 21 F, 21 B, 21 L, 21 R obtained by the cameras as well as an icon image 21 C of an image illustration of the hydraulic excavator 1 . The cameras 15 F, 15 L, 15 R are mounted at the distal ends of support arms 40 F, 40 L, 40 R to be located in positions jutting from a revolving upperstructure main unit 3 a of the revolving upperstructure 3 , so that a hidden area under the underside of a catwalk 14 provided on the revolving upperstructure 3 falls within the field of view.

1 . A monitoring image display device of an industrial machine, comprising:
 one or more monitoring cameras ( 15 ,  15 F,  15 B,  15 L,  15 R) installed on the industrial machine ( 1 ) having a movable mechanism provided at least in part, and placed in a location at least partially extending beyond an outline region to have a field of view covering the surroundings of the industrial machine ( 1 );   an image generating unit ( 35 ) that generates top-view images captured by the monitoring cameras ( 15 ,  15 F,  15 B,  15 L,  15 R) looking downward from above;   an icon-image generating unit ( 33 ) that generates an icon image ( 21 C) representing a plane of the industrial machine ( 1 ) with at least outline being shown in a graphic form;   an image compositing unit ( 34 ) that performs composite processing to display an image captured by the image generating unit ( 35 ) around the icon image ( 21 C) generated by the icon-image generating unit ( 33 ); and   an image display unit ( 20 ) that displays the top-view images composited by the image compositing unit to include part of a section hidden within a display region of the icon image ( 21 C).   
     
     
         2 . The monitoring image display device of the industrial machine according to  claim 1 , wherein:
 the industrial machine ( 1 ) has a frame ( 3 ) capable of revolving;   the icon image ( 21 C) includes a region including the frame ( 3 ) and a projection extending outward from the frame ( 3 ), the region being displayed in an outline; and   the monitoring camera ( 15 ) is placed in a position upward of a section of the outline to jut outward from the outline.   
     
     
         3 . The display device of the industrial machine according to  claim 1 , wherein:
 the industrial machine ( 1 ) has a movable working mechanism ( 5 ) projecting beyond the frame ( 3 ); and   the icon image ( 21 C) has a movable-range display region (B) for displaying a motion track of the working mechanism ( 5 ).