Semiconductor cooling and heating element for beds

The utility model relates to a semiconductor refrigerating and heating unit device for beds. The working surface of a ceramic flat plate TEC < 1 > 12703 type semiconductor refrigerating part of the prior art is tightly contacted with a metal quenching heat conducting aluminium plate, and the other surface of the ceramic flat plate TEC < 1 > 12703 type semiconductor refrigerating part is tightly contacted with a heat radiating fin to form a unit device. The utility model uses the Peltier effect principle of semiconductor temperature difference electric refrigerating to realize refrigeration, and can also change the positive and the negative poles of a direct current working voltage inversely into a heat conducting source. The semiconductor refrigerating and heating unit device can be arranged in a bed mattress to form a cold-warm bed mattress and can also be arranged in a sofa and the seat of a car driver to realize cold and warm two purposes. The utility model which has simple structure and shock resistance without noise and pollution is a novel and practical cooling and warming device.