An incubator (11) according to the present invention will be able to prevent accidents to the incubator (11) itself or other devices, a doctor, a nurse or others causing external force even if the external force is applied to a canopy (26) of a newborn chamber (16). An optical detector (38) in a control mechanism detects application of external force to the canopy (26) of the newborn chamber (16), and a signal output section in the control mechanism outputs a signal that renders a driving mechanism for lowering and raising the canopy (26) non-operational when the application of external force is detected. Accordingly, even if external force is applied to the canopy (26) by bump, contact, putting some object or others, the driving mechanism will not continue or start to lower or raise the canopy (26) while the external force is applied to the canopy (26) because the driving mechanism will be rendered non-operational.