Drip-proof cover and inverter apparatus

A drip-proof cover for protecting an inverter unit including a heat sink on a back surface of an inverter main body, the inverter main body including a body case accommodating a heat-generating component, the drip-proof cover being provided separately from the inverter unit and located outside of the inverter unit in such a way as to cover a top surface, side surfaces, and a front surface of the inverter unit, the drip-proof cover comprising:

• cover side surface portions to cover the side surfaces of the inverter unit, first gaps being provided between the cover side surface portions and the side surfaces of the inverter unit;
• a cover top surface portion to cover the top surface of the inverter unit, a second gap being provided between the cover top surface portion and the top surface of the inverter unit;
• and
• a cover front surface portion to cover the front surface of the inverter unit, wherein
• a vent is formed in the cover top surface portion, the vent being located at a position corresponding to the heat sink in a state where the cover top surface portion covers the top surface of the inverter unit.