A heat sink with bi-directional LED light source is provided. The heat seat includes a plurality of LED light sources mountable to top and bottom surfaces of the heat sink. The heat sink further includes a partial or through bore extending from one end of the heat sink to the other. The through bore contains power or power and data conductors between fluorescent receptacle end caps. The heat sink may include integral heat dissipating fins extending outwardly from at least one of the said heat sink sides. Light emitted from the plurality of light sources is redirected using lens optics to illuminate at least one surface above or below the heat sink.