Patent ID: 8033687

Claim:
A waterproof assembly of LED lamp cup, comprising; a heat-conducting substrate with one surface thereof having an annular fixing base, an outer periphery of a distal end of the fixing base extending outwards to form a first outer annular protrusion, a top surface of the first outer annular protrusion having a first sealing surface, the first outer annular protrusion being provided with a plurality of troughs; a LED unit located in the fixing base and comprising a circuit board adhered to the heat-conducting substrate and a plurality of light-emitting diodes provided on the circuit board; a casing with a hollow interior and two open ends, an edge of one end of the casing extending downwards to form an annular neck, an inner edge of the annular neck being formed with a first inner annular protrusion projecting inwards, a bottom surface of the first inner annular protrusion having a first sealing surface, an outer periphery of a distal end of the annular neck being provided with a plurality of protruding blocks, the protruding blocks of the annular neck corresponding to the troughs of the first outer annular protrusion, a first pitch being formed between the protruding blocks and the first inner annular protrusion, the first outer annular protrusion being retained in the first pitch, a first waterproof gasket being disposed between the first sealing surface of the first outer annular protrusion and the first sealing surface of the first inner annular protrusion; and a light-transmitting lamp cover having a lens and a frame provided on a periphery of the lens, an inner edge of the frame being formed with a second inner annular protrusion protruding inwards, a bottom surface of the second inner annular protrusion having a second sealing surface, an outer periphery of a distal end of the frame being provided with a plurality of protruding blocks protruding inwards, a second pitch being formed between the protruding blocks of the frame and the second inner annular protrusion; wherein the other end of the casing extends outwards to form a second outer annular protrusion, a top surface of the second outer annular protrusion having a second sealing surface, the second outer annular protrusion is provided with a plurality of troughs, the protruding blocks of the frame correspond to the troughs of the second outer annular protrusion, the second outer annular protrusion is retained in the second pitch, a second waterproof gasket being disposed between the second sealing surface of the second outer annular protrusion and the second sealing surface of the second inner annular protrusion.