Modular lighting system

1. A modular lighting system, comprising:

a support structure;

a plurality of heat sink modules physically supported by the support structure,

wherein each heat sink module defines:

a first side including at least one protrusion that comprises at least one light source module mounting point, and

a second side that is opposite to the first side and defines at least one recess corresponding to the at least one protrusion, and

wherein a first heat sink module and a second heat sink module of the plurality of the heat sink modules are adapted to engage such that the at least one protrusion on the first side of the first heat sink module is received in the at least one recess on the second side of the second heat sink module, wherein the first heat sink module is adjacent to the second heat sink module; and

one or more light source modules coupled to the plurality of heat sink modules;

wherein the plurality of heat sink modules are arranged in a modular manner such that the heat sink modules in the modular lighting system are variable; and

wherein each heat sink module is an integral molded structure defining at least one opening or passageway.

2. The modular lighting system of claim 1 , wherein the support structure comprises an extruded housing configured to house one or more electronic components.

3. The modular lighting system of claim 1 , wherein the support structure comprises a molded housing configured to house one or more electronic components.

4. The modular lighting system of claim 1 , wherein the plurality of heat sink modules are identical to each other.

5. The modular lighting system of claim 1 , wherein each heat sink module comprises:

a molded heat sink body extending generally in a first plane; and

wherein the molded heat sink body defines at least one air flow opening configured to allow ambient air flow through the molded heat sink body in a direction generally perpendicular to the first plane.

6. The modular lighting system of claim 1 , wherein:

each heat sink module defines at least one molded wiring channel; and

the modular lighting system further comprises wiring routed to at least one light source module via the at least one molded wiring channel.

7. The modular lighting system of claim 6 , wherein:

each heat sink module defines one or more elongated heat transfer protrusions extending in a first direction; and

a first molded wiring channel extends in a direction non-parallel to the first direction.

8. The modular lighting system of claim 7 , wherein the first molded wiring channel extends in a direction substantially perpendicular to the first direction.

9. The modular lighting system of claim 7 , wherein the first molded wiring channel extends in a direction substantially parallel to the first direction.

10. The modular lighting system of claim 1 , wherein a first light source module is mounted to one of the heat sink modules.

11. The modular lighting system of claim 1 , wherein a first light source module is mounted to at least two of the heat sink modules.

12. The modular lighting system of claim 11 , wherein the first light source module straddles an intersection between two adjacent heat sink modules and is secured to each of the two adjacent heat sink modules.

13. The modular lighting system of claim 1 , wherein each of the first and second sides of each heat sink module are configured for coupling to an adjacent heat sink module.

14. The modular lighting system of claim 13 , wherein each heat sink module defines a third side configured for mounting to the support structure.

15. The modular lighting system of Claim 1 ,

wherein when the first heat sink module engages the second heat sink module, the at least one light source module mounting point on the at least one protrusion on the first side of the first heat sink module projects into a footprint of the second heat sink module, and

wherein a first light source module is mounted to (a) the at least one light source module mounting point on the at least one protrusion of the first heat sink module, and (b) at least one light source module mounting point on the second heat sink module.

16. The modular lighting system of claim 1 , wherein:

the plurality of heat sink modules comprises a heat sink module array including at least two heat sink modules coupled to each other; and

the heat sink module array is supported by the support structure in a cantilevered manner such that only one heat sink module of the heat sink module array is directly coupled to the support structure.

17. The modular lighting system of claim 16 , wherein the cantilevered heat sink module array includes at least three heat sink modules.

18. The modular lighting system of claim 1 , wherein:

one or more of the first heat sink modules are physically supported at a first side of the support structure; and

one or more of the second heat sink modules are physically supported at a second side of the support structure opposite the first side, such that the support structure is arranged substantially between the first and second heat sink modules.

19. The modular lighting system of claim 18 , wherein one or more third heat sink modules are physically supported at a third side of the support structure.

20. The modular lighting system of claim 1 , wherein:

each heat sink module comprises two arrays of heat transfer structures separated by a gap; and

each heat sink module is configured to be mounted to the support structure such that a body of the support structure is received in the gap between the two arrays of heat transfer structures.

21. The modular lighting system of claim 1 , further comprising:

one or more support beams are coupled to the support structure in a cantilevered manner;

each heat sink module is mounted to at least one of the cantilevered support beams.

22. The modular lighting system of claim 21 , wherein:

the one or more support beams extend generally in a first direction; and

the plurality of heat sink modules form a linear array of heat sink modules extending generally in the first direction.

23. A modular lighting system, comprising:

a support structure;

a plurality of heat sink modules coupled to each other and physically supported by the support structure,

wherein each heat sink module defines:

a first side including at least one protrusion that comprises at least one light source module mounting point, and

a second side that is opposite to the first side and defines at least one recess corresponding to the at least one protrusion, and

wherein adjacent heat sink modules of the plurality of heat sink modules are coupled to each other such that the at least one light source module mounting point on the at least one protrusion on the first side of one heat sink module of the adjacent heat sink modules projects into a footprint of the other heat sink module of the adjacent heat sink modules; and

a plurality of light source modules coupled to the plurality of heat sink modules, wherein each light source module is secured to the at least one mounting point on at least two heat sink modules of the plurality heat sink modules.

24. The modular lighting system of claim 23 , wherein each heat sink module is an integral molded structure defining at least one opening or passageway.

25. The modular lighting system of claim 23 , wherein each light source module straddles an intersection between the two adjacent heat sink modules and is secured to each of the two adjacent heat sink modules.

26. The modular lighting system of claim 23 ,

wherein the one heat sink module and the other heat sink module are coupled such that the at least one protrusion on the first side of the heat sink module is received in the at least one recess on the second side of the other heat sink module, and

wherein a first light source module is mounted to (a) the at least one mounting point on the at least one protrusion of the one heat sink module, and (b) at least one mounting point on the other heat sink module.

27. The modular lighting system of claim 23 , wherein each heat sink module defines a third side configured for mounting to the support structure.

28. The modular lighting system of claim 23 , wherein:

the plurality of heat sink modules comprises a heat sink module array including the at least two heat sink modules coupled to each other; and

the heat sink module array is supported by the support structure in a cantilevered manner such that only one heat sink module of the heat sink module array is directly coupled to the support structure.

29. A modular lighting system, comprising:

a support structure;

a plurality of heat sink modules coupled to each other and supported by the support structure, each heat sink module comprising: at least one protrusion on a first side of the heat sink module; a second side opposite to the first side and comprising at least one recess; one or more air flow openings configured to allow ambient air flow through the heat sink module; and at least one molded wiring channel configured to route wiring to at least one of a plurality of light source module, the

plurality of light source modules coupled to the plurality of heat sink modules,

wherein each light source module is mounted to (a) at least one mounting point located on at least one protrusion on a first side of a heat sink module of the plurality of heat sink modules, and (b) at least one mounting point located on another heat sink module of the plurality of heat sink modules, and

wherein the heat sink module and the other heat sink module are adjacent to each other.