MUTUALLY CONTROLLED LIGHTING DEVICE WITH HUMAN BODY SENSOR

摘要

PROBLEM TO BE SOLVED: To provide a mutually controlled lighting device with a human body sensor that allows the two lighting devices installed at two locations to be turned on or off at the same time by using either one of the devices.

SOLUTION: A first mutually controlled lighting device with a human body sensor comprises: a lighting load 14; a human body sensor PED for sensing infrared radiation from a human body; a switch element Q1 that is connected from AC power supply to the lighting device in series to supply the lighting device with power; a controller 17 for turning on/off the switch element in response to the output of the human body sensor; a current sensing unit 15 for sensing current flowing through the lighting load when the human body is sensed; and a cutoff function section 20 for cutting off a current sensing signal to turn off the lighting load which continues to be on based on the current sensing signal from the current sensing unit. The first mutually controlled lighting device with a human body sensor is connected to a second mutually controlled lighting device with a human body sensor having the same specifications as the first mutually controlled lighting device in such a way that these devices can be mutually controlled.

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