Indoor unit of air-conditioning apparatus

An indoor unit of an air-conditioning apparatus, the indoor unit comprising:

• a housing having an air inlet, an air outlet, and an accommodation space, the air inlet suctioning indoor air, the air outlet blowing out the air suctioned from the air inlet, the accommodation space being connected to the air outlet and accommodating an electric component box;
• and
• a wind up-down direction plate provided to the housing to cover the air outlet and the accommodation space, and configured to adjust a direction of air blown out from the air outlet, wherein
• the wind up-down direction plate has a wind guide surface that guides the air blown out from the air outlet, and the wind guide surface is provided with a wind shielding portion that obstructs the air blown out from the air outlet, the wind shielding portion being provided at an edge portion of a portion of the wind guide surface, the portion facing the accommodation space, the edge portion being disposed close to a rear side of the housing.