Patent ID: 7964958

Claim:
A heatsink structure for solid-state image sensors, the heatsink structure being usable with an image pickup device including a prism for separating incident light that has come up through an image pickup lens into specified color components, a plurality of solid-state image sensors fixed to light-outgoing surfaces of the prism, and image sensor boards on which the solid-state image sensors are mounted, respectively, the heatsink structure comprising a heatsink sheet placed on a side face of one of the solid-state image sensors, the heatsink sheet being made of a flexible foil-like heat conductivity material, the heatsink sheet having a first end portion fixed to a back face of at least one of the solid-state image sensors and a second end portion fixed to another member, the heatsink sheet having cutout portions which divide the heatsink sheet widthwise into a plurality of portions along directions from the first end portion and toward the second end portion.