iPad iPad Air ventilation

[Max(IT)]

They used to, not sure about the current ones. Going further back, the G4 Cube was an example of passive cooling. It used convection and an opening in the case to keep it cool. Dell had a few fan-less netbooks.

Regardless, I wasn't saying that the iPads do this, just that you don't need to have a fan to cool a computer.

Current generation of MBP vent heats through the hinge of the screen, as far as I know ....

Btw you are right, there are a lot of passive cooled computers, and basically the iPad is one of them (like any smartphone).
But they don't need a vent aperture, because they don't cool components by air circulation. Heat is exchanged by contact and they need only a surface big enough to dissipate it in the air.
iPads and iPhones have plenty of aluminum to use.

 

[mKTank]

iPad uses the aluminum to dissipate heat, so naturally it'll get hot sometimes. That's all there is to it.