Tonneau cover structured to redirect airflow around vehicle

1. A tonneau cover for a vehicle cargo bed, the tonneau cover comprising:

a first airflow passage extending along an interior of the tonneau cover;

an airflow inlet structured to enable airflow from an exterior of the tonneau cover into the first airflow passage; and

an airflow outlet structured to enable a discharge of air from the first airflow passage to an exterior of the tonneau cover,

wherein a cross-sectional area of the first airflow passage decreases in a direction extending from the airflow inlet toward the airflow outlet.

2. The tonneau cover of claim 1 wherein the tonneau cover has a first end and a second end residing opposite the first end, wherein the airflow inlet is located between the airflow outlet and the tonneau cover second end.

3. The tonneau cover of claim 1 further comprising an airflow discharge door structured to be rotatable between a closed configuration in which an outer surface of the airflow discharge door is flush or substantially flush with a plane defined by a first side of the tonneau cover, and an open configuration in which the airflow discharge door outer surface extends out of the plane.

4. The tonneau cover of claim 3 wherein the airflow discharge door includes a diffuser wall extending along an end of the first airflow passage, the diffuser wall including a plurality of spaced apart airflow discharge openings positioned therealong and structured to enable fluid communication between the first airflow passage and an exterior of the tonneau cover.

5. The tonneau cover of claim 4 wherein the airflow discharge openings of the plurality of airflow discharge openings are structured to discharge air from the first airflow passage end in directions parallel to a plane P 1 of an outer surface of the discharge door.

6. The tonneau cover of claim 4 wherein each airflow discharge opening of the plurality of airflow discharge openings is structured to discharge airflow from the end of the first airflow passage in an associated air stream, and wherein the airflow discharge openings of the plurality of airflow discharge openings are structured so that air streams produced by the airflow discharge openings are parallel to each other as they exit the openings.

7. The tonneau cover of claim 4 wherein at least one opening of the plurality of spaced apart airflow discharge openings is in the form of an elongated slot.

8. The tonneau cover of claim 7 further comprising a grating slidably positioned over the diffuser wall, the grating including a plurality of openings extending therethrough, and wherein the openings of the plurality of grating openings are structured to adjustably align with associated ones of the openings of the plurality of openings formed along the diffuser wall when the grating is slidably positioned over the diffuser wall.

9. The tonneau cover of claim 1 further comprising at least one supplemental airflow passage having a first end located along a surface of the tonneau cover, and a second end in fluid communication with the first airflow passage.

10. The tonneau cover of claim 9 further comprising an impeller positioned in fluid communication with the at least one supplemental airflow passage.