| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sensor unit for construction with a double T bar, capable of flexibly coping with varied contraction modes and equipment. <P>SOLUTION: A sensor part 3 has a width accommodated in the width between a pair of T bars 1 of a system ceiling. A control part and a power supply part which is housed between a pair T bars 1 control with a detection signal from the sensor part 3. A board 4 for the sensor part 3, the control part and the power source part are installed almost horizontally. In another implementation, the board of the power source part may be positioned top and a mounting surface of its main circuit component may be faced upward so as to be away from a weak power part containing the control part across the board. <P>COPYRIGHT: (C)2004,JPO |
