| 摘要 |
The aperture area efficiency of a door panel with a double-panel structure having an outer panel and an inner panel is increased, while turbulent flow of air through ventilation holes is reduced. The outer panel 21 is provided with a plurality of honeycomb ventilation hole sections 26, each of which comprises a plurality of hexagonal ventilation holes 25 that are formed in the outer panel 21 so as to be arranged in a honeycomb pattern, with each side of each ventilation hole 25 being adjacent to a side of another ventilation hole 25 with a connecting portion 25a therebetween. The inner panel 23 is provided with ventilation openings 30, each of which is slightly larger than each respective honeycomb ventilation hole section 26 of the outer panel 21.
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