Rajagra
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Not sure how the discussion turned to heat issues, but the physics is not rocket science. If an object is hotter than its surroundings, it will emit heat through one method or another at a rate that is proportional to the temperature difference (assuming all other things stay constant.) Stable temperature is reached when the power being used inside a camera matches the power it emits as heat. A heat sink - eg a nice aluminium case - will allow these power values to match at a lower temperature difference. The camera will run cooler.
Sure, a heat conductive case will also allow temperature to rise to ambient temperature quicker, but that's going to happen anyway, it's just a matter of time. Our concern is how much hotter than that it's going to get.
You can imagine some exceptions. A camera in direct sunlight but surrounded by cool air (air conditioning) would be a more complex situation. But I think we need to worry more about times when the car is parked with the camera running.
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Sure, a heat conductive case will also allow temperature to rise to ambient temperature quicker, but that's going to happen anyway, it's just a matter of time. Our concern is how much hotter than that it's going to get.
You can imagine some exceptions. A camera in direct sunlight but surrounded by cool air (air conditioning) would be a more complex situation. But I think we need to worry more about times when the car is parked with the camera running.
Sent from my SM-G903F using Tapatalk