Heat dissipation mechanism, electronic device and vehicle

The utility model belongs to the technical field of vehicle-mounted camera heat dissipation, and relates to a heat dissipation mechanism, an electronic device and a vehicle. The heat dissipation mechanism comprises a shell, the shell is provided with a mounting cavity and a ventilation hole communicated with the mounting cavity, and the mounting cavity is suitable for mounting electronic equipment; and the heat dissipation air channel is arranged in the mounting cavity, the first end of the heat dissipation air channel is arranged corresponding to the ventilation hole, and the second end of the heat dissipation air channel is suitable for being arranged corresponding to the electronic equipment. According to the heat dissipation mechanism, external cold air can be directly blown to the electronic equipment through the ventilation holes and the heat dissipation air channels, so that the heat dissipation efficiency is improved, and the influence of the shell on the performance of an external fan is reduced.