TIRE INTERNAL PRESSURE ALARM DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a tire internal pressure alarm device capable of securing reliability of transmitted radio waves without lengthening the entire length of an antenna for transmitting radio waves to a receiver on a vehicle body side without increasing the size of the whole of a device. SOLUTION: The antenna is constituted by combining at least two parts of an electronic board antenna part, a casing antenna part and a screw part of a valve part. COPYRIGHT: (C)2003,JPO