OPTIC FOR A LED CHIP AND RELATED LED LIGHTING DEVICE

摘要

Optic for a LED chip, in particular of COB type, including a second element realized with an optical transparent material and having a first proximal end and a second distal end, a second external exit surface, a first total internal reflection external lateral surface which redirects and re-distributes a luminous flux realized by LED chip towards the second external exit surface, the second element including an internal blind cavity for housing LED chip. The optic includes a disc shaped first element extending externally with respect to said second element in an orthogonal direction to a longitudinal direction, and the first element and the second element are mutually integral through injection moulding, and realized in one single piece through injection moulding using optic grade transparent silicone elastomer for making a LED lighting device waterproof and anti-shock, avoiding the need of a gasket and external glass, and with reduced components.

主权项

1. Optic for a LED chip (97) in particular of COB type, said optic comprises a second element (50) realized with a optical transparent material and having a first proximal end (51) and a second distal end (53), a second external exit surface (58) which is positioned in proximity of said second distal end (53), a first external lateral total internal reflection surface (59) which is positioned between said first proximal end (51) and said second distal end (53) and which is able to redirect and re-distribute a luminous flux produced by said LED chip (97) towards said second external exit surface (58), further said second element (50) comprises a blind internal cavity (52) realized in proximity of said first proximal end (51), which extends internally to said second element (50) substantially along a longitudinal direction (90) towards said second external exit surface (58) for permit the housing of said LED chip (97), characterized in that said optic comprises a first element (30) substantially disc shaped, in particular having a central hole (32), which extends externally with respect to said second element (50) in an orthogonal direction respect to said longitudinal direction (90), and in addition said first element (30) and said second element (50) are made mutually integral through injection moulding, furthermore said first element (30) is compressible independently respect to said second element (50) for make waterproof said LED chip (97) and in particular also an electronic board (95) by avoiding at the same time an undesirable modification in the optical properties of said second element (50) and by avoiding at the same time the need of a gasket.