DISPLAY DEVICE, SHOVEL, INFORMATION PROCESSING APPARATUS

A display device displays information image related to an excavation work, in an ambient environment image in a view of a work area or an attachment viewed from a shovel, or in a field of view of an operator viewing the work area or the attachment from the shovel. The shovel may include the display device. A management device may include a display apparatus, a communication device which communicates with the shovel, and a remote control device operated by a user to remotely control the shovel via the communication device.