To restrain the deterioration in amenity of an indoor environment generated by drain water generated by condensing by an indoor heat exchanger.
This indoor unit 4 of an air conditioner 2 is composed of the indoor heat exchanger 10, an indoor fan 14 sucking in indoor air and blowing off the air in a room via the indoor heat exchanger 10, a dew receiving pan 34 forming a drain groove 34a receiving the drain water generated by condensing by the indoor heat exchanger 10, and a casing 30 storing these members. Water soluble acrylic resin paint including at least one component of antibacterial, waterproof, heat resistant, rigid and soundproof properties, is sprayed and printed on at least one of an inner wall surface of the drain groove 34a and an inner wall surface of the casing 30, and a recess-projection is formed on a painting surface. Thus, dripping of a water droplet is restrained by enhancing a hydrophilic property of the water droplet 42 on a surface, a malodor is restrained by increasing the action such as the antibacterial property.
MAEHARA HIROAKI
AJIKI NAOJI
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