Infrared ray microphone device

The utility model relates to a microphone device with an infrared ray, comprising a pick-up 1, a signal modulating and amplifying circuit 4, a signal emitter 2, a signal receiver 3 and a signal recovering and amplifying circuit 5, wherein, the signal emitter 2 is an infrared luminous tube; the signal receiver is a light-sensitive device; the pick-up is connected with the signal emitter 2 via the signal modulating and amplifying circuit 4; the signal receiver 3 is connected with the signal recovering and amplifying circuit 5; the infrared luminous tube converts an electric signal into an optical signal, and transmits the optical signal to space; the light-sensitive device receives the optical signal to convert the optical signal into the electric signal to transmit the electric signal to the signal recovering and amplifying circuit 5.