Unless I was using my grandfather's magic lantern as a display device, I wouldn't worry about the heat generated from modern displays or electronic devices. I think the amount of heat required to flash any dust would cause other problems that would be seen sooner.
However, if I put a computer in my shop, I would definitely clean it more frequently than a home or office computer. Where I used to work, we had a team that would go through all of the offices to open the cases of the PCs and vacuum the accumulated dust. This was usually combined with the 10-percent monthly cyclic inventory, so over the course of ten months, all of the equipment had been touched and cleaned.
