To provide a miniaturizable temperature difference drive device, a timepiece device and an electric apparatus with excellent power conversion efficiency, easy to manufacture.
Thermal energy is converted into mechanical energy by a thermal converter 21 containing a phase changing substance changing its phase between solid and liquid by temperature variation. Thereby, since the phase changing substance in the thermal converter 21 never changes into gas, good thermal conductivity can be secured in a normal operation temperature range and a sufficient mechanical energy can by provided even when the ambient temperature lowers, so that its conversion efficiency is improved. Since the inside of a container 22 does not need to be pressurized, the container 22 can easily be manufactured and a compressing means such as a strong spring is disposed with, to miniaturize the entire device 1.
FUJIMORI SHIGEYUKI
TAKAHASHI OSAMU
