Lighting assemblies with heat-dissipating properties principally for swimming pools and spas

A lighting assembly comprising:

• a light source;
• a lens;
• a heat spreader, wherein the heat spreader overlaps an outermost side periphery of the lens;
• and
• a thermally-conductive plastic overmolded onto the heat spreader and the lens,
• wherein the lighting assembly comprises a top end and a bottom end opposite the top end, and wherein the lighting assembly further comprises an end cap at the bottom end, wherein the end cap comprises an outermost portion and flexible fingers extending from the outermost portion.

A lighting assembly for illuminating water of a swimming pool or spa, comprising:

• a light source;
• a lens;
• a heat spreader;
• and
• a thermally-conductive plastic overmolded onto at least one of the heat spreader or the lens, wherein the thermally-conductive plastic comprises a water-facing surface that is exposed to the water of the swimming pool or spa.