The bFan attaches to your bed and blows cool air under your sheets. The bfan is meant to help those who are hot sleepers or get night sweats. The fan uses high static pressure to lift the sheets up to better distribute airflow.
I literally just randomly came up with this same idea. Got out of bed and painted a design. Then started googling to see if anyone has had the same idea. My drawing is the same looking design he has lol.
I actually made one from a snail fan turned facing up with a cardboard box cut and fit around it in an upside down L,with duct tape and amazon box. Its fantastic.
so whatever contact my body has with my new bed is boiling, even if the top of me is freezing. so not sure how this would help. i was thinking about drilling holes in my bed and putting a fan underneath pointing up:) half kidding