TECHNICAL FIELD

The present invention relates to a construction machine.

BACKGROUND ART

There has been known a technology of causing a display device provided in an operating room of a construction machine to display in numerals, together with an attachment, information concerning a distance between a plane (a reference position) where a construction machine locates and a leading end of the attachment (for example, see Patent Literature 1).

Another technology having been known is to cause a transparent display device provided at a front position in an operating room of a construction machine to display, together with an attachment, necessary information for an operator to perform a working (for example, see Patent Literature 2). Specifically, Patent Literature 2 discloses a technology of causing the display device to display the necessary information in characters or colors in juxtaposition with a leading end attachment.

However, the technology disclosed in Patent Literature 1 has a problem that an operator finds it difficult to instinctively grasp a working condition and execute the working in a peripheral working area (working site) having an uneven surface or a slope due to the displaying of the distance information only in the numerals.

Moreover, the technology disclosed in Patent Literature 2 is insufficient in a guidance function of performing a guide of the working to the operator due to the displaying of the necessary information only in the characters or colors in juxtaposition with the leading end attachment.

CITATION LIST

Patent Literature

Patent Literature 1: Japanese Patent Publication No. 5941663

Patent Literature 2: Japanese Unexamined Patent Publication No. 2017-71942

SUMMARY OF INVENTION

An object of the present invention is to provide a construction machine having a guidance function of making it easier for an operator to manipulate an attachment to approach a target position in a peripheral working area (that is a target working site).

Provided is a construction machine provided with an attachment having a leading end attachment, the construction machine including: an attachment state detecting device which detects a state of the attachment; an attachment positional information generation section which generates attachment positional information concerning a position of the attachment based on the state of the attachment detected by the attachment state detecting device; a display device; and a display control section which controls the display device to display attachment relevant information generated based on the attachment positional information generated by the attachment positional information generation section and three-dimensional contour information concerning a three-dimensional contour of a peripheral working area around the construction machine. The attachment relevant information is information concerning an image obtained by superimposing a peripheral image about the three-dimensional contour of the peripheral working area and a projected image about the leading end attachment which is projected to the peripheral image in a projection direction set arbitrarily or a projection direction set in accordance with a predetermined condition.

