Overhead ambient air control systems

An overhead passenger comfort module which includes a mirror image pair of adjacent module segments, wherein each of the module segments comprises:

• a support frame member which includes a perimetrical trim frame member;
• and
• a ventilation system supported by the support frame member, wherein
• the ventilation system comprises:
• (i) a supply conduit adapted to being fluid-connected to a supply of ventilation air;
• and
• (ii) first and second branch conduits fluid-connected at one end to the supply conduit and terminating in elongate first and second ventilation openings at first and second edge regions of the support frame member, and wherein
• the trim frame member includes first and second concavely curved edge diffuser portions which are adjacently positioned to and spaced from the first and second ventilation openings respectively, wherein
• ventilation air discharged from the first and second ventilation openings impinges on the concavely curved first and second edge diffuser portions of the trim frame member so as create a diffused volume of air which envelops substantially a passenger seated therebelow to establish a personal ambient air zone for the passenger.