REAR GUARD OF BOX FAN AND BOX-FAN

A rear guard of a box fan, comprising a body arranged vertically, a waterproof part (12) being provided on the body, the waterproof part (12) being arranged in a position corresponding to a motor (4) in the box fan, the waterproof part (12) comprising several recessed structures arranged on the body, vent holes (123) for communicating both the inside and outside of the body being provided in the recessed structures. By means of providing the vent holes (123) in the recessed structures, this invention achieves the waterproof function while ensuring ventilation, being able to effectively avoid the occurrence of such events as the outbreak of fire in the motor and electrical leakage, extending the life span of the motor of the box-fan. L'invention concerne une protection arrière d'un ventilateur à boîtier, laquelle protection comprend un corps disposé verticalement, une partie étanche vis-à-vis de l'eau (12) étant disposée sur le corps, la partie étanche vis-à-vis de l'eau (12) étant disposée dans une position c