LED-based lighting units with substantially sealed LEDs

摘要

An LED-based lighting unit (10) with substantially sealed LEDS (30) is disclosed. The LED-based lighting unit (10) includes a plurality of LEDs (30)coupled to a mounting surface, a plurality of optical pieces (52) each placeable adjacent the mounting surface about at least one of the LEDs (30), and an elastomeric layer (60) abutting and extending between the optical pieces (52). Optionally, an adhesive layer (40) may be interposed between the mounting surface and the optical pieces (52) and/or the elastomeric layer (60). Optionally, a rigid layer (70) may be provided atop the elastomeric layer (60).

主权项

1. An LED-based lighting unit having a mounting surface and comprising:
a plurality of LEDs coupled to said mounting surface, each of said LEDs having a light emitting portion; an adhesive layer atop said mounting surface, said adhesive layer not in contact with said light emitting portion of at least some of said LEDs; a plurality of optical pieces each having a base in contact with said adhesive layer about at least one LED of said plurality of LEDs, at least some of said optical pieces individually placeable about said at least one LED; and an elastomeric layer in contact with said adhesive layer and abutting and extending between said optical pieces; wherein said LED-based lighting unit is configured to substantially seal said LEDs from external objects by cooperative sealing engagement of the elastomeric layer and the optical pieces, wherein said elastomeric layer extends beyond and lips over the periphery of said mounting surface.