Patent ID: 7972038
Filing Date: 2011-07-05
Classification: F21S,F21V,F21Y,G02B

Abstract:
1. A direct view LED lamp comprising: a heat sink body having a longitudinal axis and a wall having an exterior side and an interior side; a cavity formed by said interior side and defined by a circumferential side wall and a back wall; a circuit board positioned in said cavity adjacent said back wall; at least one LED mounted on said circuit board facing in an axial direction parallel to said longitudinal axis and away from said circuit board; an optical light guide adjacent said at least one LED, said optical light guide having a guide portion having an internally reflective surface and at least one optical input window, the guide portion extending axially away from the optical input window to an optical output window in a direction parallel to said longitudinal axis; wherein said circuit board includes a boss having a key projecting therefrom, and said optical light guide includes a keyway sized and shaped to receive said key for aligning said optical light guide with said at least one LED; a housing at least spanning the cavity, and having a coupling face to mate with said heat sink body; and at least one first closure feature associated with said housing to latch said housing in a fixed relation to said heat sink body, the heat sink body having a second closure feature to cooperate with said first closure feature, said housing having an optical passage permitting the passage of light from said output window to the lamp exterior.