I wonder what the market size for this is. If it were a real product that wasn't super ugly in the bedroom, we'd use it. My BR is ~1500 ppm with two sleepers in a 10x12 room, and opening the window isn't an option.
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This is my attempt to fix groggy mornings by lowering my bedroom CO2 from 1700 ppm to ~900 ppm.
I designed a simple, 3D-printed fan duct that directs air under the door to improve air circulation.
A note on the design process: I used CadQuery, a Python library for creating parametric 3D models. I didn't know tools like this existed and highly recommend it if you can program; it turned out to be more convenient than manually iterating on prototypes in a GUI.
The project is open source and the post explains the full build. Happy to answer any questions.
Anyway, I think there are plenty of people who do not want to open windows and still have fresh air. But the amount of people who can't modify their room or for whatever reasons don't want to open their bedroom door is bound to be much less.
Now I'm curious, why don't you open your bedroom door? Me, I'm a light sleeper and other apartment dwellers will wake me up if I open the door.