| 摘要 |
PURPOSE: A refrigerator is provided to visually recognize time that a door of a refrigerator is continuously in a closed state because the time that the door of a refrigerator is in the closed state is counted and displayed. CONSTITUTION: A refrigerator comprises a door closing sensor(210), a counter(220), a control unit(230) and a display unit(240). The door closing sensor detects the door in a closed state, thereby generating a detection signal. The counter is connected to the door closing sensor and receives the signal generated by the door closing sensor, thereby counting the time that the door of a refrigerator is in the closed state. The control unit is connected to the counter, thereby being input the time that the door of a refrigerator is in the closed state. The display unit is connected to the control unit, thereby displaying the time that the door of a refrigerator is in the closed state. |
