| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a lighting device capable of detection of an intruder for crime prevention with little false alarm by arranging a radio-wave sensor inside. <P>SOLUTION: The lighting device fixed to building materials constituting walls partitioning indoor spaces, entrance- and exit-doors, and a ceiling has a radio-wave sensor hidden to detect human bodies approaching the windows or existing indoors, in which, a detection area at doorways is set at a given height from the floor, and the size, moving speed, traces of movement of a detected object are detected from output signals of the sensor to discriminate a pet animal and an intruder, so that it makes up a crime-prevention intrusion detecting device with little false alarm. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
