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ventilation

automatic ventilation system for cars
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I hate getting into a hot car that has been sitting in the sun all day. Why can't cars be built with a vent that automatically expells the hot air?

I am imagining a vent positioned on the roof (sufficiently protected to keep out rain, prying hands). When the internal temperature of the car gets over a certain amount, the vent opens and fans blow the hot air out.

To conserve energy, this whole system can be powered by roof-mounted solar panels. This works well since if the sun goes away, the car doesn't need to be vented as much.

Thoughts?

dansroka, Mar 19 2001

Baked. http://www.wtbradley.com/park&vent
A widget that fits in a slightly rolled down window, with a solar powered vent fan. [StarChaser, Mar 19 2001, last modified Oct 21 2004]

[link]






       Sounds good, except for the solar panels, which would get damaged too easily by hail or snow/ice removal in winter. A highly reflective roof might do a good job of not absorbing the heat in the first place.   

       How about an awning-type attachment that you install in summer? Or a super-strong fan that you could activate from outside the car for a few minutes before you got in?
kellyryer, Mar 19 2001
  

       Can't you coat the solar cells with some sort of transparent material to minimize damage?
centauri, Mar 19 2001
  

       Baked.   

       Newer Mercedes & BMW models will cool/heat the car prior to entry. (...Peter, since you're up, could you get the links for these? Thanks.)
iuvare, Mar 19 2001
  

       Baked for all cars...
StarChaser, Mar 19 2001
  
      
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