Light emitting diode assemblies for illuminating refrigerated areas

A light emitting diode (LED) assembly useful for illuminating a refrigerated area, the LED assembly comprising:

• a plurality of LED modules;
• a conductive base configured to conduct heat away from the plurality of LED modules coupled to the conductive base, wherein the conductive base includes a base cooling channel, and wherein the conductive base and the plurality of LED modules are configured to operate substantially within the refrigerated area;
• an external heat sink coupled to the conductive base, and configured to conduct heat away from the conductive base, wherein the external heat sink is further configured to be mounted substantially outside the refrigerated area;
• and
• wherein at least one of the plurality of LED modules includes:
• an LED base;
• an LED located substantially within the LED base and configured to generate a light beam;
• an inner beam director;
• and
• an outer beam director, wherein an interface between the inner beam director and the outer beam director is shaped to refract and reflect the light beam along the interface, thereby narrowing a substantial portion of the light beam.