| 摘要 |
PROBLEM TO BE SOLVED: To easily replace a battery by a new battery and make parts disposed in a wheel rim compact by attaching a pressure detecting element to the insert part of a tire valve. SOLUTION: This tire pneumatic pressure alarm device comprises a tire valve having a pressure detecting element 1 for detecting tire pneumatic pressure in the insert part of the tire valve, a radio wave transmitter 9 for transmitting the information of the pressure detecting element 1 electrically connected thereto through a cable, a transmitter 12 having the transmitting antenna 10 and the power source 11 of the radio wave transmitter 9, a receiving antenna 13 provided in a vehicle body side, a receiver 15 in a cabin connected to the antenna 13 through a cable 14 and a display device 16 or an alarm device 17 for alarming the fall of the pneumatic pressure on the basis of receiving information obtained by the receiver 15. |
