Display device and display system of work machine

1. A display device for a work machine comprising a display control unit that, based on image data obtained by a camera installed in the work machine, displays a calibration screen including surrounding display data which indicates surrounding situation of the work machine, and calibration display data which is used in calibration of work equipment of the work machine.

2. The display device for the work machine according to claim 1 , wherein the calibration display data contains guidance display data that prompts actuation of the work equipment of the work machine.

3. The display device for the work machine according to claim 1 , wherein the surrounding display data contains a bird's eye image of surrounding of the work machine.

4. The display device for the work machine according to claim 1 , wherein, in case that the calibration screen is being displayed, when an operation device that is operated for actuating the work machine is determined not to be in neutral state, the display control unit continues with display of the calibration screen.

5. The display device for the work machine according to claim 4 , wherein, in case that a main menu screen not including the surrounding display data is being displayed, when the operation device is determined not to be in neutral state, the display control unit switches screen to a standard screen including the surrounding display data and at least including data indicating remaining level of fuel.

6. A display system comprising:

a display device; and

a display control unit that, based on image data obtained by a camera installed in a work machine, displays a calibration screen including surrounding display data which indicates surrounding situation of the work machine, and calibration display data which is used in calibration of work equipment of the work machine, on the display device.

7. The display device for the work machine according to claim 1 , wherein the guidance display data prompts actuation of the work equipment to a specific orientation to calibrate the work equipment.

8. The display device for the work machine according to claim 7 , wherein the guidance display data includes guidance image showing the specific orientation of the work equipment to be performed and guidance text of calibration instructions to be performed.

9. The display device for the work machine according to claim 1 , wherein the work equipment comprises a boom, an arm coupled to the boom, and a bucket coupled to the arm.

10. The display device for the work machine according to claim 1 , wherein the work machine is an excavator that includes a base carrier and an upper revolving structure supporting the work equipment, and

the calibration display data is used when the calibration of the work equipment of the work machine is performed by driving the work equipment.

11. The display device for the work machine according to claim 1 , wherein the display control unit displays the surrounding display data and the calibration display data side-by-side on the calibration screen.