| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a sign device capable of installing a sensor, a transmitter, a transmitting antenna or the like in a place where is not knocked over by an automobile and transmitting a danger signal sensing impact by one sensor, the transmitter and the transmitting antenna or the like for a plurality of sign sections. <P>SOLUTION: The sign device comprises a supporting section formed in the rectangular shape of a thin plate, a plurality of sign sections provided to the supporting section at regular intervals, an air hole provided to the supporting section connected to all the sign sections, an air hole inlet and outlet provided to the supporting section connecting the air hole to the outside, the air hole inlet and outlet or an air pipe connected to the air hole inlet and outlet, the sensor provided to the air pipe and an alarm device connected to the sensor, and when the sign sections receive impact, it is so constituted that the sensor is operated by variation of compressed air to give the alarm from the alarm device. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
