Collaborative robot (1) comprising a base (2) and at least one articulated arm (3) having at least one joint (5), the articulated arm (3) being configured for defining a plurality of work positions (Wl, W2) with respect to the base (2), the collaborative robot comprising a signalling device (15) coupled to the articulated arm (3), the signalling device (15) having a light signalling crown (16) comprising light spots (17) or perimetral sectors (18), which are activated in relation to a displacement direction (D) of a terminal part (10) of said articulated arm (3) from a work position (Wl) to a following work position (W2).
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