PIPE LAYOUT STRUCTURE AND INDOOR UNIT OF AIR CONDITIONING DEVICE

This pipe layout structure is provided with a rear surface housing, and a cover attached to the rear surface housing. The rear surface housing has a first recessed section, which is formed by being recessed from the surface of the rear surface housing, and which is provided with a first rear surface section; and a second recessed section, which is formed adjacent to the first recessed section by being recessed from the surface, and which is provided with a second rear surface section. The second rear surface section is formed further toward the front surface side than the first rear surface section, and a step section is formed between the first rear surface section and the second rear surface section. 配管配置构造具备背面壳体和安装于背面壳体的罩，背面壳体具有：第1凹部，从背面壳体的表面凹陷而形成，并具备第1背面部；和第2凹部，与第1凹部邻接，从表面凹陷而形成并具备第2背面部，第2背面部形成于比第1背面部靠表面侧的位置，在第1背面部与第2背面部之间形成有阶差部。