Remote operation support device and remote operation support method for work machine

A remote operation support device for supporting an operator's remote operation of a work machine using a remote operation device comprising a remote output interface that outputs a taken image that has been taken through a window defining a cab by an imaging device and indicates a situation outside of the cab, the imaging device being disposed in an internal space of the cab of the work machine, the remote operation support device comprising:

• a meteorological data obtaining unit configured to obtain meteorological data that is data about a meteorological phenomenon at a designated time in an area where the work machine resides, from a meteorological information source residing outside of the work machine;
• an intra-cab temperature estimation unit configured to estimate a temperature in the internal space of the cab of the work machine, based on the meteorological data;
• an intra-cab humidity estimation unit configured to estimate a humidity in the internal space of the cab of the work machine, based on the meteorological data;
• a fogging determination unit configured to determine whether the window is fogged or not based on outside temperature data that is data about an outside temperature outside of the cab of the work machine and is included in the meteorological data, on intra-cab temperature data that is data about the temperature in the cab estimated by the intra-cab temperature estimation unit, and on intra-cab humidity data that is data about the humidity in the cab estimated by the intra-cab humidity estimation unit;
• and
• an anti-fogging control unit configured to perform an anti-fogging process for preventing the window from being fogged when a determination result by the fogging determination unit is affirmative.