APPARATUS FOR CONTROLLING DIRECTIVITY OF RADIO BEAM AND RADIO TYPE VEHICLE INTRUSION DETECTION APPARATUS

摘要

PROBLEM TO BE SOLVED: To suppress the reflection of a radio beam at a reflecting member in a situation in which the reflecting member capable of reflecting the radio beam in an unpredictable direction is arranged within a transmission range of the radio beam in a radio-beam-directivity control apparatus.;SOLUTION: An intrusion detection sensor 12 arranged in a ceiling in a cabin has a transmission/reception antenna 18, and a radio reflecting member 24 such as an A/T shift panel 20 is made of a metal capable of reflecting the radio beam transmitted from the transmission/reception antenna 18 in the direction of vehicle glass. A shielding member 26 for shielding the radio beam transmitted from the transmission/reception antenna 18 is arranged in the back surface of a ceiling design part 16 present between the transmission/reception antenna 18 and the radio reflecting member 24 and covering the intrusion detection sensor 12.;COPYRIGHT: (C)2007,JPO&INPIT