The shape of the rod is still developing. Maybe there is no need for the fan-shape of the rod. Regarding the number of the top 'sticks', we are thinking 3 or 6, which are operated by 3 motors. The number of rods is still not sure, will carry out more prototype experiment to test with it.
This concept is a wave-form ventilation system hanging on the ceiling. It can be applied in retail space(especially for furniture shops, such as IKEA) as a kind of attraction.