| 摘要 |
A method for keeping temperatures using energy generated by a piezoelectric element and an apparatus relating thereto are disclosed. The disclosed method and apparatus are capable of easily keeping the temperature of an object which is stored inside the apparatus, using thermal energy, wherein the thermal energy is converted from energy generated by a piezoelectric effect of the piezoelectric element, and the piezoelectric effect is generated when the piezoelectric element is affected by pressure or vibration due to friction generated while a user carries the apparatus. |
