G - Physics
08
B
G08B 23/00 (2006.01) B60R 25/10 (2006.01) G08B 13/16 (2006.01)
Patent
CA 2452080
An alarm device including a sensor having sufficiently high detection sensitivity is provided. The sensor 51 in the alarm device 41 is disposed such that a plan M perpendicular to the detection direction P of the sensor 51 is aligned at a specified angle .theta. with respect to a plane V perpendicular to the sun visor 72 (the lower surface 61a), where the specified angle .theta. should be set to be an approximately mean value of the expected minimum angle .gamma. = 0° and the expected maximum angle .gamma. = 40° (in this case, .theta. = 20°). In other words, the plane M perpendicular to the detection direction P of the sensor 51 should be aligned at an angle .alpha. (.alpha.= 90° - .theta.) of less than 90° with respect to the sun visor 72 (the lower surface 61a). The present invention is applicable to such an alarm device mounted onto a vehicle for preventing the vehicle theft.
Otsuski Yoshiyuki
Shimamoto Hiroshi
Omron Corporation
Smart & Biggar
LandOfFree
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