| 摘要 |
PROBLEM TO BE SOLVED: To solve problems for example, in a conventional vehicle having a box type rear deck, during travel, a negative pressure region which is generated on a rear side serves as resistance, so that fuel consumption performance is deteriorated.SOLUTION: A plate having a hole for air discharge on the central vicinity is attached to a rear part of a box type rear deck, with a space between the plate and the rear deck, in which the plate has size almost equal to size of a rear face of the rear deck, so that when a truck travels, air which is taken from surrounding of the box type rear deck can be discharged from the hole for air discharge on a rear part of the box type rear deck, so that generation of a negative pressure region during travel can be suppressed, so that travel resistance is reduced, and fuel economy can be improved.SELECTED DRAWING: Figure 1 |
