Patent Description:
Some straddled vehicles include a radiator, a radiator fan, and a fan cover. The radiator fan generates a flow of air through the radiator. The fan cover is disposed to cover the radiator fan, and guides the air that has passed through the radiator (hereinafter referred to as "exhaust air"). For example, the vehicle disclosed in <CIT> includes an air guide plate that covers the radiator fan. The air guide plate includes a lower opening and guides the exhaust air so that the exhaust air is discharged from the lower opening.

In order to improve the cooling effect of the radiator by the radiator fan, it is desirable that the opening area of the air outlet provided in the fan cover is large. However, when the exhaust air is discharged only from the air outlet provided at the bottom of the fan cover as in the vehicle described above, it is difficult to increase the opening area of the air outlet. Also, if an air outlet is provided in a portion other than the lower portion of the fan cover, the hot exhaust air may flow toward a component disposed behind the radiator fan. In that case, the component will be thermally affected by the exhaust air. It is an object of the present invention to provide straddled vehicle that can improve a cooling effect of a radiator by a radiator fan in a straddled vehicle, and to suppress a thermal influence on a component disposed behind the radiator fan. According to the present invention said object is solved by a straddled vehicle having the features of independent claim <NUM>. Preferred embodiments are laid down in the dependent claims.

A straddled vehicle according to one aspect of the present disclosure includes a radiator, a radiator fan, and a fan cover. The radiator fan is disposed behind the radiator. The fan cover covers the radiator fan from behind. The fan cover includes a rear surface. The rear surface faces the radiator fan behind the radiator fan. The rear surface includes a bulging portion. The bulging portion bulges rearward. The bulging portion includes a rear outlet. The rear outlet is open laterally.

In the straddled vehicle according to the present aspect, the bulging portion of the fan cover includes the rear outlet. This increases the opening area in the fan cover. In addition, since the bulging portion has a shape that bulges rearward, the volume of the space inside the fan cover increases due to the bulging portion. This increases the cooling effect of the radiator by the radiator fan. Furthermore, the rear outlet is open laterally. Therefore, it is difficult for the exhaust air blown from the rear outlet to flow rearward of the radiator fan. As a result, the thermal influence on a component disposed behind the radiator fan is suppressed.

The rear outlet may extend in a vertical direction. In this case, the opening area of the rear outlet is increased. The rear outlet is disposed to face the radiator fan. In this case, the opening area of the rear outlet can be increased.

The fan cover may include a rear guide rib. The rear guide rib may be disposed on the rear surface of the fan cover so as to face the rear outlet. In this case, the flow of exhaust air blown out from the rear outlet can be controlled by the rear guide rib.

The rear guide rib may guide downward the exhaust air blown out from the rear outlet by the radiator fan. In this case, the exhaust air blown from the rear outlet can flow downward.

The fan cover may include a first lateral outlet and a lateral guide rib. The first lateral outlet may be disposed on a lateral side of the radiator fan. The lateral guide rib may be disposed in the fan cover and extend toward the first lateral outlet. In this case, the exhaust air inside the fan cover can be rectified so that the exhaust air can be efficiently blown out from the first lateral outlet.

The straddled vehicle may further include a side cowl. The side cowl may cover the radiator from the lateral side. The side cowl may include an opening. At least a portion of the opening may be located above the fan cover. The lateral guide rib may be disposed so as to blow the exhaust air by the radiator fan obliquely upward from the first lateral outlet toward the opening of the side cowl. In this case, the exhaust air blown out from the first lateral outlet is efficiently guided toward the opening of the side cowl.

The fan cover may include a second lateral outlet. The second lateral outlet may be disposed on a lateral side of the radiator fan. The second lateral outlet may be open so that the exhaust air by the radiator fan is blown obliquely upward from the second lateral outlet in accordance with the rotational direction of the radiator fan. In this case, the exhaust air is efficiently blown out from the second lateral outlet in accordance with the rotation direction of the radiator fan.

The straddled vehicle may further include a side cowl. The side cowl may cover the radiator from a lateral side. The side cowl may include an opening. At least a portion of the opening may be located above the fan cover. The second lateral air outlet may be open so that the exhaust air by the radiator fan is blown out from the second lateral air outlet toward the opening in accordance with the rotational direction of the radiator fan. In this case, the exhaust air is blown out from the second lateral outlet in accordance with the rotation direction of the radiator fan, and is efficiently discharged from the opening of the side cowl.

The fan cover may further include a first lateral outlet and a second lateral outlet. The first lateral outlet may be disposed on one lateral side of the radiator fan. The second lateral outlet may be disposed on the other lateral side of the radiator fan. In this case, the increased opening area improves the cooling effect of the radiator fan. In addition, since the exhaust air is blown out from the first and second lateral outlets disposed on both lateral sides of the radiator fan, the thermal influence on a component disposed behind the radiator fan is suppressed.

The fan cover may further include a lower outlet. The lower outlet may be disposed below the radiator fan. In this case, the increased opening area improves the cooling effect of the radiator fan. In addition, since the exhaust air is blown out from the lower outlet disposed below the radiator fan, the thermal influence on a component disposed behind the radiator fan is suppressed.

The radiator fan may rotate counterclockwise as seen from the rear view. The first lateral outlet may be disposed to the left of the radiator fan. The second lateral outlet may be disposed to the right of the radiator fan. The fan cover may include a lateral guide rib. The lateral guide rib may be disposed to blow out the exhaust air by the radiator fan obliquely upward and leftward from the first lateral outlet. The second lateral outlet may be open so that the exhaust air by the radiator fan is blown obliquely upward and rightward from the second lateral outlet. In this case, the exhaust air blown out from the first lateral outlet is guided by the lateral guide rib and is guided obliquely upward and leftward from the first lateral outlet. In addition, the exhaust air from the second lateral outlet is blown obliquely upward and rightward by the flow generated by the counterclockwise rotation of the radiator fan.

An upper end of the first lateral outlet may be located below an upper end of the second lateral outlet. In this case, the flow generated by the counterclockwise rotation of the radiator fan tends to flow obliquely downward and leftward at the first lateral outlet. By disposing the upper end of the first lateral outlet at a low position, the exhaust air is prevented from flowing obliquely downward and leftward from the first lateral outlet. As a result, the volume of exhaust air blown obliquely upward and leftward from the first lateral outlet can be increased.

The straddled vehicle may further include an engine, an air guide plate, and a fin. The engine may be disposed behind the radiator. The air guide plate may be disposed below the radiator. The air guide plate may guide running wind that flows downward along the radiator without passing through the radiator toward the engine through below the radiator. The fin may extend in the front-rear direction on the air guide plate. In this case, the running wind flowing downward along the radiator without passing through the radiator can be used to cool the engine. In addition, by rectifying the running wind with the fin, the flow speed of the running wind can be increased and sent to the engine. This improves the cooling efficiency of the engine.

A straddled vehicle according to an embodiment will be described below with reference to the drawings. <FIG> is a side view of a straddled vehicle <NUM> according to an embodiment. <FIG> is a front view of the straddled vehicle <NUM>. As shown in <FIG>, the straddled vehicle <NUM> includes a steering device <NUM>, a front wheel <NUM>, a fuel tank <NUM>, a seat <NUM>, an engine <NUM>, a rear wheel <NUM>, a rear arm <NUM>, and a vehicle body cover <NUM>. In the present embodiment, the front, rear, left, and right directions refer to the front, rear, left, and right directions as seen from a rider on the seat <NUM>.

The steering device <NUM> is steered by a rider. The steering device <NUM> includes a front fork <NUM> and a handle member <NUM>. The front fork <NUM> rotatably supports the front wheel <NUM>. The handle member <NUM> is connected to the front fork <NUM>. As shown in <FIG>, the front fork <NUM> includes a first suspension <NUM> and a second suspension <NUM>.

The fuel tank <NUM> is disposed behind the handle member <NUM>. The seat <NUM> is disposed behind the fuel tank <NUM>. The engine <NUM> is disposed between the front wheel <NUM> and the rear wheel <NUM>. The engine <NUM> is disposed below the fuel tank <NUM>. The engine <NUM> generates driving force for rotating the rear wheel <NUM>. The rear wheel <NUM> is disposed behind the engine <NUM>. The rear wheel <NUM> is rotatably supported by the rear arm <NUM>.

The vehicle body cover <NUM> includes a front cover <NUM>, a first side cowl <NUM>, and a second side cowl <NUM>. The front cover <NUM> is disposed in front of the steering device <NUM>. The first side cowl <NUM> and the second side cowl <NUM> extend rearward from the front cover <NUM>. The first side cowl <NUM> and the second side cowl <NUM> cover the steering device <NUM> and the engine <NUM> from the lateral sides.

<FIG> is an enlarged left side view of the straddled vehicle <NUM>. <FIG> is a perspective view of the first side cowl <NUM>. As shown in <FIG> and <FIG>, the first side cowl <NUM> includes a first outer cowl <NUM> and a first inner cowl <NUM>. The first outer cowl <NUM> is disposed laterally outside the first inner cowl <NUM>. The first outer cowl <NUM> is disposed with a gap from the first inner cowl <NUM>. The first inner cowl <NUM> includes a first opening <NUM>. The first opening <NUM> communicates with the internal space of the vehicle body cover <NUM>. The first outer cowl <NUM> covers the first opening <NUM> from the lateral side. The first outer cowl <NUM> overlaps the first opening <NUM> as seen from the vehicle side view.

<FIG> is an enlarged right side view of the straddled vehicle <NUM>. As shown in <FIG>, the second side cowl <NUM> includes a second outer cowl <NUM> and a second inner cowl <NUM>. The second outer cowl <NUM> is disposed laterally outside the second inner cowl <NUM>. The second outer cowl <NUM> and the second inner cowl <NUM> have the same structures as the first outer cowl <NUM> and the first inner cowl <NUM>, respectively. The second inner cowl <NUM> includes a second opening <NUM>. The second opening <NUM> communicates with the internal space of the vehicle body cover <NUM>.

As shown in <FIG>, the straddled vehicle <NUM> includes a radiator unit <NUM>. The radiator unit <NUM> is disposed behind the front fork <NUM>. The radiator unit <NUM> is disposed in front of the engine <NUM>. The radiator unit <NUM> is laterally covered with the first side cowl <NUM> and the second side cowl <NUM>. The radiator unit <NUM> includes a radiator <NUM>, a radiator fan <NUM>, a fan motor <NUM>, and a fan cover <NUM>.

The radiator <NUM> cools the coolant of the engine <NUM>. The first side cowl <NUM> and the second side cowl <NUM> described above cover the radiator <NUM> from the lateral sides. As shown in <FIG>, the vehicle body cover <NUM> includes a front opening <NUM>. The front opening <NUM> opens forward of the straddled vehicle <NUM>. The front opening <NUM> is disposed below the front cover <NUM> as seen from the vehicle front view. The front opening <NUM> is disposed between the first side cowl <NUM> and the second side cowl <NUM>. The radiator <NUM> is disposed facing the front opening <NUM> between the first side cowl <NUM> and the second side cowl <NUM>.

The radiator fan <NUM> is disposed behind the radiator <NUM>. The radiator fan <NUM> rotates to generate an air flow passing through the radiator <NUM> from front to rear.

The fan motor <NUM> is disposed behind the radiator fan <NUM>. The fan motor <NUM> supports the radiator fan <NUM>. The fan motor <NUM> rotates the radiator fan <NUM>. The fan motor <NUM> is attached to the fan cover <NUM>. The fan motor <NUM> rotates the radiator fan <NUM> counterclockwise as seen from the vehicle rear view.

The fan cover <NUM> is disposed behind the radiator fan <NUM>. The fan cover <NUM> covers the radiator fan <NUM> from behind. As shown in <FIG> and <FIG>, the first side cowl <NUM> and the second side cowl <NUM> described above cover the fan cover <NUM> from the lateral sides. The engine <NUM> is disposed behind the fan cover <NUM>. Specifically, the engine <NUM> includes a cylinder head <NUM>. The cylinder head <NUM> is disposed behind the fan cover <NUM>. At least a part of the first opening <NUM> and the second opening <NUM> described above is located above the fan cover <NUM>.

<FIG> is a perspective view of the radiator unit <NUM>. <FIG> is a rear view of the radiator unit <NUM>. <FIG> is a bottom view of the radiator unit <NUM>. <FIG> is a front view of the fan cover <NUM>. <FIG> is a left side view of the fan cover <NUM>. <FIG> is a right side view of the fan cover <NUM>. As shown in <FIG>, the fan cover <NUM> includes a front surface <NUM>, an upper surface <NUM>, a first side surface <NUM>, a second side surface <NUM>, a bottom surface <NUM>, and a rear surface <NUM>.

The front surface <NUM> is open. The front surface <NUM> is disposed facing the radiator <NUM> and is closed by the radiator <NUM>. The upper surface <NUM> is disposed above the radiator fan <NUM>. The upper surface <NUM> covers the radiator fan <NUM> from above. The upper surface <NUM> has an upwardly curved shape. The upper surface <NUM> has a curved shape that follows the contour of the radiator fan <NUM>. The upper surface <NUM> is closed.

The first side surface <NUM> is disposed to the left of the radiator fan <NUM>. The first side surface <NUM> covers the radiator fan <NUM> from the left side. The first side surface <NUM> is inclined downward and leftward. The first side surface <NUM> includes a first lateral outlet <NUM>, a first side wall <NUM>, a blocking portion <NUM>, and a plurality of lateral guide ribs <NUM>, <NUM>, <NUM>, and <NUM>. The first lateral outlet <NUM> is disposed to the left of the radiator fan <NUM>. The first lateral outlet <NUM> opens leftward. The first side wall <NUM> closes the upper side of the first lateral outlet <NUM>. As shown in <FIG> and <FIG>, the first lateral outlet <NUM> is provided at the rear portion of the first side surface <NUM>. A portion forward of the first lateral outlet <NUM> on the first side surface <NUM> is closed by the blocking portion <NUM>. The blocking portion <NUM> is longer than the first lateral outlet <NUM> in the front-rear direction.

The lateral guide ribs <NUM>, <NUM>, <NUM>, and <NUM> are disposed across the first lateral outlet <NUM> in the front-rear direction. As shown in <FIG>, portions of the lateral guide ribs <NUM>, <NUM>, <NUM>, and <NUM> are disposed inside the fan cover <NUM>. The lateral guide ribs <NUM>, <NUM>, <NUM>, and <NUM> extend toward the first lateral outlet <NUM>. The lateral guide ribs <NUM>, <NUM>, <NUM>, and <NUM> extend upward and leftward. The lateral guide ribs <NUM>, <NUM>, <NUM>, and <NUM> project outward from the fan cover <NUM> from the outer surface of the first side surface <NUM>.

The lateral guide ribs <NUM>, <NUM>, <NUM>, and <NUM> include a first lateral guide rib <NUM> , a second lateral guide rib <NUM> , a third lateral guide rib <NUM> and a fourth lateral guide rib <NUM>. The first lateral guide rib <NUM> is located highest among the lateral guide ribs <NUM>, <NUM>, <NUM>, and <NUM>. The first lateral guide rib <NUM> protrudes from an upper edge of the first lateral outlet <NUM>. The second lateral guide rib <NUM> is located lowest among the lateral guide ribs <NUM>, <NUM>, <NUM>, and <NUM>. The second lateral guide rib <NUM> protrudes from a lower edge of the first lateral outlet <NUM>. The third lateral guide rib <NUM> and the fourth lateral guide rib <NUM> are disposed between the first lateral guide rib <NUM> and the second lateral guide rib <NUM>.

When the radiator fan <NUM> rotates counterclockwise as seen from the vehicle rear view, the exhaust air by the radiator fan <NUM> flows diagonally downward and leftward inside the first side surface <NUM>. The lateral guide ribs <NUM>, <NUM>, <NUM>, and <NUM> are disposed so as to blow the exhaust air by the radiator fan <NUM> obliquely upward and leftward from the first lateral outlet <NUM>.

The second side surface <NUM> is disposed to the right of the radiator fan <NUM>. The second side surface <NUM> covers the radiator fan <NUM> from the right side. The second side surface <NUM> is inclined downward and rightward. The second side surface <NUM> includes a second lateral outlet <NUM>, a second side wall <NUM>, and a plurality of reinforcing ribs <NUM> and <NUM>. The second lateral outlet <NUM> is disposed to the right of the radiator fan <NUM>. The second lateral outlet <NUM> opens rightward. When the radiator fan <NUM> rotates counterclockwise as seen from the vehicle rear view, the exhaust air by the radiator fan <NUM> flows diagonally upward and rightward inside the second side surface <NUM>. The second lateral outlet <NUM> is open so that the exhaust air by the radiator fan <NUM> is blown out obliquely upward and rightward from the second lateral outlet <NUM> in accordance with the rotational direction of the radiator fan <NUM>. The second side wall <NUM> closes the upper side of the second lateral outlet <NUM> on the second side surface <NUM>.

The second lateral outlet <NUM> is provided over substantially the entire front-rear direction of the second side surface <NUM>. The second lateral outlet <NUM> is longer than the first lateral outlet <NUM> in the front-rear direction. The second lateral outlet <NUM> is longer than the first lateral outlet <NUM> in the vertical direction. The upper end of the second lateral outlet <NUM> is located above the upper end of the first lateral outlet <NUM>. In other words, the upper end of the first lateral outlet <NUM> is located below the upper end of the second lateral outlet <NUM>. The opening area of the second lateral outlet <NUM> is larger than the opening area of the first lateral outlet <NUM>. The reinforcing ribs <NUM> and <NUM> are disposed across the second lateral outlet <NUM> in the front-rear direction. The reinforcing ribs <NUM> and <NUM> extend downward and rightward.

The bottom surface <NUM> is disposed below the radiator fan <NUM>. The bottom surface <NUM> includes a lower outlet <NUM>. The lower outlet <NUM> is disposed below the radiator fan <NUM>. As shown in <FIG>, the lower outlet <NUM> is larger than the fan motor <NUM> in the left-right direction. The bottom surface <NUM> includes a first bottom opening <NUM> and a second bottom opening <NUM>. The first bottom opening <NUM> is disposed to the left of the lower outlet <NUM>. The second bottom opening <NUM> is disposed to the right of the lower outlet <NUM>.

The rear surface <NUM> faces the radiator fan <NUM> behind the radiator fan <NUM>. The rear surface <NUM> covers the radiator fan <NUM> from behind. The rear surface <NUM> includes a first bulging portion <NUM> and a second bulging portion <NUM>. The first bulging portion <NUM> has a shape that bulges rearward. The first bulging portion <NUM> includes a first inclined surface <NUM> and a rear outlet <NUM>. The first inclined surface <NUM> is inclined rearward and laterally inward. That is, the first inclined surface <NUM> is inclined rearward and leftward.

The rear outlet <NUM> is disposed behind the radiator fan <NUM>. The rear outlet <NUM> is disposed to face the radiator fan <NUM>. The rear outlet <NUM> overlaps the radiator fan <NUM> as seen from the vehicle rear view. The rear outlet <NUM> is disposed between the first lateral outlet <NUM> and the second lateral outlet <NUM> in the left-right direction. The rear outlet <NUM> opens leftward. The rear outlet <NUM> extends in the vertical direction. An upper end of the rear outlet <NUM> is located above the first lateral outlet <NUM>. The upper end of the rear outlet <NUM> is located above the second lateral outlet <NUM>.

The second bulging portion <NUM> has a shape that bulges rearward. The second bulging portion <NUM> is disposed to the left of the first bulging portion <NUM>. The second bulging portion <NUM> includes a second inclined surface <NUM>. The second inclined surface <NUM> is inclined leftward and rearward. The second inclined surface <NUM> extends leftward and rearward from the rear outlet <NUM>.

The fan cover <NUM> includes a rear guide rib <NUM>. The rear guide rib <NUM> is disposed to face the rear outlet <NUM> on the rear surface <NUM> of the fan cover <NUM>. The rear guide rib <NUM> is disposed on the second inclined surface <NUM>. The rear guide rib <NUM> is disposed to the left of the rear outlet <NUM>. The rear guide rib <NUM> extends in the vertical direction. The rear guide rib <NUM> guides downward the exhaust air by the radiator fan <NUM> blown out from the rear outlet <NUM>.

As shown in <FIG>, the fan cover <NUM> includes a plurality of radiator fixing portions <NUM>-<NUM>. The fan cover <NUM> is fixed to the radiator <NUM> at the plurality of radiator fixing portions <NUM>-<NUM>. The plurality of radiator fixing portions <NUM>-<NUM> includes a first radiator fixing portion <NUM>, a second radiator fixing portion <NUM>, and a third radiator fixing portion <NUM>. The first radiator fixing portion <NUM> is connected to the upper surface <NUM>. The second radiator fixing portion <NUM> and the third radiator fixing portion <NUM> are connected to the bottom surface <NUM>.

As shown in <FIG>, the fan cover <NUM> includes a plurality of motor fixing portions <NUM>-<NUM>. The fan motor <NUM> is fixed to the plurality of motor fixing portions <NUM>-<NUM>. The plurality of motor fixing portions <NUM>-<NUM> includes a first motor fixing portion <NUM>, a second motor fixing portion <NUM>, and a third motor fixing portion <NUM>. The first motor fixing portion <NUM>, the second motor fixing portion <NUM>, and the third motor fixing portion <NUM> are connected to the rear surface <NUM>. The first motor fixing portion <NUM>, the second motor fixing portion <NUM>, and the third motor fixing portion <NUM> protrude from the rear surface <NUM> toward the inside of the fan cover <NUM>.

In the straddled vehicle <NUM> according to the present embodiment, as indicated by an arrow A1 in <FIG>, running wind is taken into the vehicle body cover <NUM> through the front opening <NUM>. The running wind passes through the radiator <NUM> as the radiator fan <NUM> rotates. The coolant of the engine <NUM> is thereby cooled in the radiator <NUM>.

The running wind that has passed through the radiator <NUM> is taken into the fan cover <NUM> as exhaust air. As indicated by an arrow A2 in <FIG>, part of the exhaust air is guided by the lateral guide ribs <NUM>, <NUM>, <NUM>, and <NUM> and blown obliquely upward from the first lateral outlet <NUM>. The exhaust air from the first lateral outlet <NUM> is blown out toward the first opening <NUM> of the first side cowl <NUM> and is discharged toward the rear of the vehicle through between the first outer cowl <NUM> and the first inner cowl <NUM> as indicated by an arrow A3 in <FIG>.

As indicated by an arrow A4 in <FIG>, part of the exhaust air is blown obliquely upward from the second lateral outlet <NUM> in accordance with the rotational direction of the radiator fan <NUM>. The exhaust air from the second lateral outlet <NUM> is blown out toward the second opening <NUM> of the second side cowl <NUM> and is discharged toward the rear of the vehicle through between the second outer cowl <NUM> and the second inner cowl <NUM> as shown by an arrow A5 in <FIG>.

Part of the exhaust air is blown downward from the lower outlet <NUM> as indicated by an arrow A6 in <FIG>. Part of the exhaust air is blown leftward from the rear outlet <NUM> as indicated by an arrow A7. As indicated by an arrow A8 in <FIG>, the exhaust air from the rear outlet <NUM> is guided downward by the rear guide rib <NUM>. The exhaust air from the lower outlet <NUM> and the rear outlet <NUM> flows downward from the fan cover <NUM>, passes through the inside of the vehicle body cover <NUM>, and is discharged to the rear of the vehicle.

In the straddled vehicle <NUM> according to the present embodiment, the first bulging portion <NUM> of the fan cover <NUM> includes the rear outlet <NUM>. As a result, the opening area of the fan cover <NUM> is increased. Further, since the first bulging portion <NUM> has a shape that bulges rearward, the volume of the space inside the fan cover <NUM> is increased by the first bulging portion <NUM>. Thereby, the cooling effect of the radiator <NUM> by the radiator fan <NUM> is increased. Furthermore, the rear outlet <NUM> opens laterally. Therefore, it is difficult for the exhaust air blown out from the rear outlet <NUM> to flow rearward of the radiator fan <NUM>. Thereby, the thermal influence on a component disposed behind the radiator fan <NUM> is suppressed.

The straddled vehicle <NUM> according to the embodiment described above is a so-called full cowl type motorcycle. However, the straddled vehicle is not limited to a full cowl type motorcycle, and may be a half cowl or naked type motorcycle. Alternatively, the straddled vehicle may be a vehicle such as a scooter or moped.

The structure of the fan cover <NUM> is not limited to that of the above embodiment, and may be modified. For example, the shape of the first lateral outlet <NUM> may be changed. The first lateral outlet <NUM> may be omitted. The shape of the second lateral outlet <NUM> may be changed. The second lateral outlet <NUM> may be omitted. The shape of the lower outlet <NUM> may be changed. The lower outlet <NUM> may be omitted. The shape of the rear outlet <NUM> may be changed. The shape of the rear guide rib <NUM> may be changed.

In the above embodiment, the radiator fan <NUM> is a counterclockwise radiator fan, but may be a clockwise radiator fan. In that case, the fan motor <NUM> may rotate the radiator fan <NUM> clockwise as seen from the vehicle rear view. In that case, in the fan cover <NUM>, the first side surface <NUM> and the second side surface <NUM> may be disposed to be left-right reversed from the above embodiment. That is, in a case that the radiator fan <NUM> rotates clockwise as seen in the vehicle rear view, the first lateral outlet <NUM> and the second lateral outlet <NUM> in the fan cover <NUM> may be disposed in the opposite direction from the above embodiment. The first bulging portion <NUM> and the second bulging portion <NUM> may be disposed to be left-right reversed from the above embodiment. The second bulging portion <NUM> may be omitted.

The structure of the radiator unit <NUM> is not limited to that of the above embodiment, and may be modified. <FIG> is a side view showing a radiator unit <NUM> according to a modification. As shown in <FIG>, the radiator unit <NUM> may include an air guide plate <NUM>.

The air guide plate <NUM> is disposed below the radiator <NUM>. A front end of the air guide plate <NUM> is bent upward. The air guide plate <NUM> guides the running wind that flows downward along the radiator <NUM> without passing through the radiator <NUM> toward the cylinder head <NUM> of the engine <NUM> through below the radiator <NUM> as indicated by an arrow A9. As a result, running wind that has not passed through the radiator <NUM> is used to cool the engine <NUM>.

Claim 1:
A straddled vehicle (<NUM>) comprising:
a radiator (<NUM>);
a radiator fan (<NUM>) disposed behind the radiator (<NUM>) with regard to a vehicle front-rear direction; and
a fan cover (<NUM>) that covers the radiator fan (<NUM>) from behind with regard to the vehicle front-rear direction, wherein
the fan cover (<NUM>) includes a rear surface (<NUM>) facing the radiator fan (<NUM>) behind the radiator fan (<NUM>) with regard to the vehicle front-rear direction,
the rear surface (<NUM>) includes at least one bulging portion (<NUM>, <NUM>) that bulges rearward with regard to the vehicle front-rear direction, and
the bulging portion (<NUM>, <NUM>) includes a rear outlet (<NUM>) that opens laterally with regard to a vehicle left-right direction, characterized in that the rear outlet (<NUM>) is disposed to face the radiator fan (<NUM>) from behind with regard to the vehicle front-rear direction.