Patent ID: 8648544

Claim:
An illumination lighting apparatus which is connected to, as an external apparatus, any of a human body sensing sensor configured to detect presence/absence of a person, an illuminance sensor configured to detect space illuminance, and a dimmer which arbitrarily adjusts the space illuminance, said illumination lighting apparatus comprising: an external apparatus determiner configured to determine which kind of the external apparatus is connected based on a lighting operation control signal which is unique to the external apparatus and which is output from the external apparatus; and a signal processor configured to produce an output control signal for controlling an optical output of a light source, wherein the external apparatus determiner determines the kind of the connected external apparatus based on frequency or voltage of the lighting operation control signal input to the external apparatus determiner, and informs the signal processor of the determined kind, and wherein the signal processor produces the output control signal based on the lighting operation control signal so as to correspond to the informed kind of the external apparatus.