(12) United States Patent ao) Patent No.: Us 7,485,137 B2
Cheng (45) Date of Patent: Feb. 3,2009
An electric heat therapy apparatus which includes an upper cover, a holder, a heating unit including a control circuit, an electrical connector and a light bulb, a heat reservoir, wherein the holder has no upper end connected to a lower ed of the upper cover and a lower end connected to an upper end of the electrical connector, the heat reservoir is connected to a lower end of the electrical connector, the heat reservoir has a closed bottom, and the light bulb is fitted within the heat reservoir for keeping heat and light in the heat reservoir, whereby the human skin can be prevented from causing pathological changes by the direct light given by the light bulb and the heat given by the light bulb will be efficiently retained in the heat reservoir and the temperature of the heat reservoir can be rapidly increased.
12 Claims, 6 Drawing Sheets