Patent ID: 8258938

Claim:
A tire inflation pressure detecting device comprising: tire inflation pressure sensors; transmitters for transmitting signals indicating tire inflation pressures detected by the tire inflation pressure sensors, respectively; and a receiver for receiving the signals transmitted by the transmitters; a pair of one of the tire inflation pressure sensors and one of the transmitters being operatively connected to each of wheel rims of a front wheel and a rear wheel of a two-wheeled vehicle, wherein the receiver is arranged in a region outward, in a vehicle-body width direction, of a straight line connecting the wheel rims of the front and rear wheels, and forward of a rider's seat, wherein the two-wheeled vehicle includes: a pair of right and left main tubes extending obliquely downward and rearward to the right and to the left, respectively, from a head pipe; and a front cowl for covering an area extending from a front portion of the head pipe to front portions of regions outside of the respective main tubes in the vehicle-body width direction, a pair of right and left radiators, which are arranged, respectively, in the regions outside of the respective main tubes in the vehicle-body width direction, wherein a face of a radiator core included in each of the radiators is substantially opposed to the front cowl, and wherein the receiver is arranged in a space formed between one of the main tubes and the front cowl, and is attached by a stay to a radiator cap above one of the radiator cores.