Air distribution apparatus

1. An air distribution apparatus, comprising:

an inlet port configured to receive conditioned air from a roof mounted air conditioner;

at least two outlet ports in flow communication with the inlet port, each outlet port of the at least two outlet ports disposed at a longitudinal end of a leg and configured to deliver said conditioned air to an interior of a vehicle;

a splitter formation disposed between the inlet port and the at least two outlet ports, said splitter formation dividing air flow from the inlet port into at least two air flows corresponding to each said outlet port;

said inlet port providing for a downward flow of said conditioned air;

said splitter formation turning each air flow of said at least two air flows in a horizontal direction;

at least one louver disposed at an end of each said outlet port;

a step proximate to each of said at least two outlet ports, said step varying in height from side walls of said leg to a center of each of said leg.

2. The air distribution apparatus of claim 1 , further comprising a space beneath said splitter formation.

3. The air distribution apparatus of claim 1 , wherein each said step has a greater height in the center of each of said leg than at side walls of each of said leg.

4. The air distribution apparatus of claim 1 , wherein each leg of said two legs has a convex surface and a concave surface.

5. The air distribution apparatus of claim 4 , said concave surface being adjacent to said step so that said step varies in height.

6. The air distribution apparatus of claim 4 , said convex surface being a lower convex surface.

7. The air distribution apparatus of claim 6 , said lower convex surface extending between sidewalls and varying height between said sidewalls.

8. The air distribution apparatus of claim 6 , each leg further comprising a divider disposed between an upper surface and said lower convex surface.

9. The air distribution apparatus of claim 1 further comprising at least one return air entry port disposed between each said longitudinal end of said legs.

10. An air distribution apparatus, comprising:

an inlet port configured to be positioned adjacent to a roof line of a vehicle having a roof mounted air conditioner disposed above the inlet port;

a first leg and a second leg defined by a fixed splitter formation, said first leg extending in a first direction and said second leg extending in a second direction,

a first outlet port disposed at an end of said first leg and a second outlet port disposed at an end of said second leg;

each of said first leg and said second leg formed by an upper convex surface, a lower concave surface and a lower convex surface, and side walls;

each of said first leg and said second leg having a reduced cross-section at the lower convex surface and increased cross-section at the side walls.

11. The air distribution apparatus of claim 10 , further comprising a divider disposed in each of said first leg and said second leg.

12. The air distribution apparatus of claim 10 , further comprising at least one louver at the end of each of said first leg and said second leg.

13. The air distribution apparatus of claim 10 , further comprising a space beneath said fixed splitter formation.

14. The air distribution apparatus of claim 10 , further comprising a supply duct defined between said inlet port and said first and second outlet ports.

15. The air distribution apparatus of claim 14 , further comprising return air entry ports spaced on sides of said supply duct.

16. The air distribution apparatus of claim 10 , further comprising a step adjacent to each of said first outlet port and said second outlet port.

17. The air distribution apparatus of claim 16 , wherein said lower convex surface varies in height between said side walls.