Composite heat sink/support structure

A heat sink board structure, comprising

• a thermal/structural base including:
• a heat sink board attachment;
• a composite core layer contacting the heat sink board attachment, the composite core layer comprising a mass of substantially unidirectionally oriented first graphitized carbon fibers infiltrated with a first resin material matrix and extending toward the heat sink board attachment, the composite core layer having a first face and a second face, and
• a planar first transverse reinforcement layer bonded to the first face of the composite core layer, the first transverse reinforcement layer comprising substantially unidirectionally oriented second carbon fibers embedded in a second resin material matrix, the second carbon fibers lying substantially in the plane of the first transverse reinforcement layer and perpendicular to the first graphitized carbon fibers, and
• a planar second transverse reinforcement layer bonded to the second face of the composite core layer, the second transverse reinforcement layer comprising substantially unidirectionally oriented third carbon fibers embedded in a third resin material matrix, the third carbon fibers lying substantially in the plane of the second transverse reinforcement layer and perpendicular to the first graphitized carbon fibers;
• and
• a heat generating component bonded to the thermal/structural base.