The four-poster bed has been around since at least mediaeval times. The canopy and associated drapes provided a room within a room which offered extra privacy and thermal comfort.
Today’s invention is a novel variant on this approach.
A bed would have a horizontal canopy with a vertical skirt of sound and heat insulating material.
When sensors indicated that the bed’s occupants were asleep (using cheap heartrate monitors) the whole canopy would move down to a much lower height above the bed to create a sound insulating, warm cocoon.
The height of the canopy could automatically vary throughout the night, in order to maintain an optimal sleeping temperature inside, and withdraw to full height just as anyone began to wake up.
In this way, occupants would be unaware of the bed’s behaviour on their behalf and central heating bills could be massively reduced in cold climates.