Patent ID: 9351372
Filing Date: 2016-05-24
CPC Classification: H05B,Y02B

Claim Text:
1. A lighting device comprising: a light emission portion for emitting illumination light; an information reception portion for receiving information from an adjacent lighting device; a control signal reception portion operable to receive a control signal from a portable external remote control unit with a limited reachable range; and a control portion for controlling lighting state of the light emission portion according to the information received by the information reception portion and according to the control signal received by the control signal reception portion, wherein the control portion is arranged to turn on the light emission portion in response to the control signal within the limited reachable range and received by the control signal reception portion, and to turn off the light emission portion in response to the information received by the information reception portion, the information being indicative of a turn-on of the adjacent lighting device in response to the portable external remote control unit which has been brought out of the limited reachable range of the control signal reception portion and into the limited reachable range of the adjacent lighting device instead.