It permits, without energy consumption, the emission of negative ions to purify the environment. In addition, it has biocidal action to eliminate microbes and bacteria. Furthermore, it emits infrared radiation to dry out walls, ceilings and objects in the room, thereby removing moisture. Therefore, it comprises a framework (1, 2), and a first body (3) that emits negative ions, which comprises a first anodized aluminium plate (7) and a second anodized aluminium plate (8), coated with a ceramic paint with silver-doped zeolites, which, in addition to emitting negative ions, constitutes a nanosilver-based biocidal compound. Said aluminium plates (7, 8) are heated uniformly by a conductor wire (6) in order to emit infrared radiation.
