| 摘要 |
PROBLEM TO BE SOLVED: To surely detect even a person who goes in and out from the mullion side (both end sides of a door) regardless of the change of status of the door surface near the door. SOLUTION: An automatic door device includes a pair of right and left mullions 1, 1 (vertical frames) for forming an entrance part in a building or a room, wherein doors 3, 3 are installed between the mullions 1, 1. In automatically controlling the doors to be opened and closed according to a detection signal of a human body detecting means comprising an infrared ray detector 4, the infrared ray detector 4 is installed on at least one mullion 1 in such a manner that the orientation is directed toward the other mullion 1 side. |
