Patent ID: 9693432
Date: 2017-06-27
CPC Classifications: F21S,F21V,F21Y,H05B

Claim:
1. A lighting device to which a light source is attached comprising: a metal casing; a power supply circuit which is disposed in the metal casing and supplies power to the light source; an antenna disposed in the metal casing; a radio circuit which is disposed in the metal casing and receives a radio signal via the antenna; a control circuit which controls the power supply circuit according to the radio signal received by the radio circuit; at least one opening that communicatively connects an inside and an outside of the metal casing; and a line which is inserted in the at least one opening and insulated from the metal casing, the line being conductive and having open ends, and configured to operatively couple the radio signal from outside of the metal casing to the antenna inside the metal casing.