INFRARED RELAY FOR UNDERWATER TOY

PROBLEM TO BE SOLVED: To accurately control an underwater toy by equipping the water surface with a light interceptor to intercept infrared light from a remote controller and converting the intercepted light signal to an electric signal then an optical signal to irradiate the signal into water by an infrared illuminator. SOLUTION: An infrared relay 5 laid on the upper surface of a water tank 1 comprises a light interceptor to intercept infrared light from an infrared controller 4, a converting circuit to convert an intercepted signal intercepted by a light interceptor 51 housed in a case 52, an amplifier, and an infrared illuminator disposed on the under face of the case 52. When an underwater toy 6 is floated on the surface of water in the water tank 1 and a progress signal is transmitted by the infrared controller 4, a signal intercepted by the light interceptor 51 of the infrared relay 5 is amplified by the amplifier to be illuminated into water and intercepted by a light interceptor 67 of the underwater toy 6 and converted to an electric signal by a receiver to drive a micromotor 63 to rotate a screw 64.