This study tackles overheating in deep-sea LED fish-attracting lamps under extreme heat. A new cooling approach combines special surface patterns, chimney airflow, and heat pipes. The lamp housing is reshaped to channel heat efficiently from the light source to the outer shell. Fine surface textures at key contacts further improve heat flow. Tests show this reduces peak temperature by 6.73% compared to conventional designs, offering an effective solution for high-power underwater lighting.

This study examines deep-sea gear lubrication challenges under extreme conditions, including high pressure, with a focus on EHL (elasto-hydrodynamic lubrication) theory and interface texturing advances. Critical gaps remain in multi-physics coupling and synergistic texture-coating interactions. The paper proposes a research roadmap integrating multi-scale modelling, surface engineering optimization, experimental validation, and industrial implementation to enable robust deep-sea transmission systems.