Heat exchanger and air conditioner including same

A heat exchanger provided for heat exchange between refrigerant and air, the exchanger comprising:

• a plurality of refrigerant tubes that are disposed with a clearance (C) therebetween in a first direction (A), in which the air moves, and are disposed to be spaced apart in a second direction (B) crossing the first direction (A);
• and
• a plurality of heat exchange fins that are disposed between the plurality of refrigerant tubes disposed to be spaced apart in the second direction (B),
• wherein each of the plurality of heat exchange fins includes a first portion disposed at an upstream side in the first direction (A), a second portion disposed at a downstream side in the first direction (A), and a valley portion disposed between the first portion and the second portion in the first direction (A) so as to correspond to the clearance (C), each of the first portion and the second portion including a first inclined portion inclined upward toward the downstream side in the first direction (A) and a second inclined portion inclined downward toward the downstream side in the first direction (A).