NOTIFYING DEVICE, AUTOMATIC DRIVING VEHICLE, NOTIFYING METHOD, PROGRAM, NON-TRANSITORY RECORDING MEDIUM, AND NOTIFYING SYSTEM

A notifying device mounted in a vehicle has a controller and a light emitter. The controller determines, based on a detection result of a plurality of objects existing in a periphery of the vehicle, respective directions of notification objects included in the plurality of objects with the vehicle as a reference. The light emitter emits light in the respective directions.