A vehicle, such as an under-bone type motorcycle, can guide a sufficient
amount of running wind to a core section of a radiator (heat exchanger).
The vehicle includes a head pipe, a main frame connected to the head pipe
to extend downward and rearward, an engine disposed below the main frame,
a leg shield covering a front side of a leg of a driver and having an
opening in a forward area thereof, a radiator disposed within the opening
of the leg shield which includes a core section through which running
wind passes thus cooling the engine, and a wind guiding wall attached to
the leg shield to guide the running wind to the radiator. The wind
guiding wall includes a forward section that protrudes forward from a
front end surface of the opening of the leg shield and a rear section
that has a rear end positioned adjacent to a lateral side end of the core
section of the radiator.