| 摘要 |
PURPOSE:To prevent going in and out of air from a door more than before and prevent people that are hurriedly going in and out the opened door, etc., from crashing against the closing door in the, opening/closing device of an automatic door. CONSTITUTION:First detecting means 3a and second detecting means 3b are provided, detection range 5a of the first detecting means 3a is set close to a door 1, and detection range 5b of the second detecting means 3b is set on the outside of it. When the door 1 is closed, the door 1 opens when people, etc., are in the detection range 5a, and when the door 1 is opened, the door 1 is made not to close when people, etc., are in either of the detection range 5a or the detection range 5b. Since the door 1 is opened when people, etc., came close to the side of the door 1, going in and out of wasteful air is prevented, and since the opened door 1 does not close when people, etc., already came close to the detection range 5b, those people hurriedly going in and out the door 1, etc., are prevented from crashing against the door 1 with these means. |
