Fuel supply device and vehicle with the same

A fuel supply device comprises an air cleaner, an air funnel (8), and a fuel injector (14) to jet a fuel toward an opening of the air funnel (8). The air cleaner comprises a rear wall (11l) extended near a peripheral edge of the opening of the air funnel (8) from above the opening. The rear wall (11l) intersects an imaginary surface (P) including an opened surface of the opening of the air funnel (8) and is inclined in a manner to approach the opening as it comes downward. The rear wall (11l) guides an air in the air cleaner to the opening of the air funnel (8).