Cooling Duct for Image Pickup Apparatus Recording Medium

The cooling duct is divided into multiple extension portions (first extension portion and second extension portion) that extend in different directions. The first extension portion extends parallel to the optical axis direction to reach the recording medium, while the second extension portion extends along the main circuit board. This segmentation allows the cooling duct to efficiently cool both the recording medium and main circuit board even when the main circuit board is disposed orthogonal to the optical axis.

The cooling duct transitions from a single-direction cooling approach to a multi-dimensional cooling structure. By adding extension portions that extend in different directions (parallel to optical axis and along the main circuit board), the cooling system achieves three-dimensional heat dissipation coverage, enabling efficient cooling of components arranged orthogonal to the optical axis.

The cooling duct is pre-configured with extension portions that extend parallel to the optical axis direction, positioning the cooling air flow path directly adjacent to the recording medium before operation begins. This preliminary arrangement ensures that when high-bit rate recording generates heat, the cooling system is already in place to immediately dissipate the heat, preventing temperature rise that would otherwise limit recording performance.

The cooling duct acts as an intermediary heat transfer pathway between the recording medium and the cooling air. By thermally connecting the recording medium to the cooling duct through the medium circuit board, and having cool air flow through the duct, the system creates an efficient heat transfer chain that mediates between the heat generation at the recording medium and the heat dissipation to the environment.