Heat dissipation air duct structure for low-voltage power distribution cabinet

The utility model relates to a heat dissipation air duct structure for a low-voltage power distribution cabinet, and belongs to the technical field of low-voltage power distribution equipment. According to the technical scheme, a frequency conversion wind collecting cover (2) is arranged above a frequency converter body (1) in the low-voltage power distribution cabinet, a ventilation duct (3) is defined between the upper portion of the frequency conversion wind collecting cover (2) and a through hole (17) of a cabinet top cover plate (4) through a baffle, an axial flow fan (8) is arranged in the frequency conversion wind collecting cover (2), and a cabinet top ventilation cover (6) is arranged above the cabinet top cover plate (4). The cabinet top ventilation hood (6) is communicated with the ventilation duct (3) through the through hole (17) of the cabinet top cover plate (4), and the side face of the cabinet top ventilation hood is provided with ventilation and heat dissipation holes (5). Through the axial