LED-based lighting units with substantially sealed LEDs
AssigneeKoninklijke Philips N.V.
InventorJean-François Laporte
Life of this patent
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Abstract
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).
Claims19
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.
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;
- a plurality of optical pieces each having a base adjacent said mounting surface about at least one LED of said LEDs;
- an elastomeric layer extending between said optical pieces and abutting and surrounding said base of each of said optical pieces;
- a rigid layer atop said elastomeric layer and atop a portion of each of said optical pieces;
- wherein said rigid layer overlaps the abutment between each said base and said elastomeric layer;
- and
- wherein said LED-based lighting unit is configured to substantially seal said LEDs from external objects by the elastomeric layer and the optical pieces, wherein an adhesive layer is interposed between said elastomeric layer and said mounting surface.
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;
- a plurality of optical pieces each having a base adjacent said mounting surface about at least one LED of said LEDs;
- an elastomeric layer extending between said optical pieces and abutting and surrounding said base of each of said optical pieces;
- a rigid layer atop said elastomeric layer and atop a portion of each of said optical pieces;
- wherein said rigid layer overlaps the abutment between each said base and said elastomeric layer;
- and
- wherein said LED-based lighting unit is configured to substantially seal said LEDs from external objects by the elastomeric layer and the optical pieces, wherein an adhesive layer is interposed between said elastomeric layer and said mounting surface;
- and
- wherein said elastomeric layer extends beyond and lips over the periphery of said mounting surface.
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;
- a plurality of optical pieces each having a base adjacent said mounting surface about at least one LED of said LEDs;
- an elastomeric layer abutting and extending between said bases of said optical pieces;
- a rigid layer atop said elastomeric layer and atop a portion of each of said optical pieces;
- wherein said rigid layer overlaps the abutment between each of said optical pieces and said elastomeric layer;
- and
- wherein said rigid layer and said mounting surface collectively provide compressive force on at least one of said elastomeric layer and said optical pieces to seal the LEDs from the environment.
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;
- a plurality of optical pieces each having a base adjacent said mounting surface about at least one LED of said LEDs;
- an elastomeric layer extending between said optical pieces and abutting and surrounding said base of each of said optical pieces;
- a rigid layer atop said elastomeric layer and atop a portion of each of said optical pieces;
- wherein said rigid layer overlaps the abutment between each said base and said elastomeric layer;
- and wherein said LED-based lighting unit is configured to substantially seal said LEDs from external objects, wherein said elastomeric layer is substantially planar with a surface of said base of each of said optical pieces proximal its abutment therewith.
Dependencies are inferred from the claim text.