An illuminative light communication device is described, which comprises a lighting unit (316) that emits light for lighting;
a modulator (311) that controls blinking or light intensity of the lighting unit in accordance with data, thereby modulating the emitted light;
a communicating unit (317) that transmits the data through optical communication other than illuminative light communication; and
a switching unit that changes over respective operations of the modulator (311) and the communicating unit (317) based on whether the lighting unit is on or off; wherein the switching unit changes over such that the communicating unit can operate while the lighting unit is off.
