The orthosis includes an articulated framework made to be fixed on either side of the knee onto the thigh and lower leg, restraint straps attached to the framework and surrounding the thigh and lower leg leaving the patellar area free. A microphone grip is pressed into between clamp arms in a state where front ends are opened. Electromotive force obtained from the Seebeck element module is used to drive selected components of the notebook PC. The body unit includes the base installing the circuit board, the heat conducting plate to conduct heat generated by the IC on the substrate to the rear end of the transceiver, the supplementary substrate, the supporting plate, and the cover for putting these components therein.