Abstract: Whether a thermal image is in a steady state or an unsteady state is judged based on measurement values of temperatures of objects and ambient temperature and previously obtained relational expressions between ambient temperature and the temperatures of the objects and an air conditioner is controlled based on the result of the judgment.

Abstract: A temperature distribution measuring instrument comprises an outer cylinder having slits, an inner cylinder having a slit and a sensor array, arranged at the center of the cylinder, for detecting infrared rays passing through these slits. Each of the slits of the outer cylinder is changed in width according to its angle from a plane passing the center axis of the outer cylinder and the center of an object to be measured to equalize the measurement areas of the object and the rotation speed of the inner cylinder is changed to equalize the input times of infrared rays input from the object into the slits of the outer cylinder.

Abstract: A temperature distribution measuring instrument comprises an inner cylinder having slits and rotating around an infrared sensor, and a rotating outer cylinder having a plurality of slit blocks, each consisting of a plurality of slits. The slit blocks of the outer cylinder are arranged at intervals of a predetermined angle and shifted from one another by a predetermined height in a direction of the length of the outer cylinder, and infrared rays passing through a slit in the outer cylinder and a slit in the inner cylinder are converged at the infrared sensor.

Abstract: The present invention offers a simple structure that facilitates the mounting of bearings, that maintains lubricating oil at a sufficient level in the bearing portions and that maintains an optimal distance between a rotor and a case housing for preventing freezing, for preventing reduction of the capacity and for preventing noise. Bearing stoppers provided between the bearings of the brushless motor and the bearing holders, which hold the upper end edge of each bearing, are secured at a projection formed at the internal circumferential surface of each bearing holder. A felt, which comes in contact with the lower portion of each bearing stopper and also comes in contact with the bearing at one side is provided, with holes communicating with the felt formed at the lower surface of the bearing stopper. In addition, the lower limit of the distance h between the lower end of the rotor and the upper end surface of the case housing is set at 1.5 mm.