POWER CONVERSION DEVICE

The invention discloses a power conversion apparatus. A power conversion device according to one aspect of the present invention may comprise: a cover body comprising an upper side part, a lower side part disposed in parallel with the upper side part, a first side surface part connecting the upper side part and the lower side part, and a second side surface part disposed in parallel with the first side surface part; a transistor disposed on a lower side of the upper side portion in the interior of the cover body; a heat sink provided on the lower side of the transistor and providing a passage through which air flowing in from the outside moves; a first air blocking portion provided on a side surface of the heat sink and disposed parallel to the first side surface portion; a plurality of capacitors disposed between the first air blocking part and the second side surface part; and a transformer disposed at a distance from the heat sink. The upper side portion may be provided with a discharge portion that is for