A hinge device has a first part and a second part, which are intended to be attached to a door frame and a door, respectively. The first part and the second part are rigidly connected to each other and have each a tubular housing, whose center axis defines a first hinge axis and which accommodates two balls, an axially displaceable locking member arranged axially inwardly of each ball, a compression spring arranged between and cooperating with each ball and the associated locking member, and an eccentric located between the two locking members and cooperating therewith. Each eccentric is rotatably carried about a transverse axis in the respective housing and rotatable between an initial position, in which the two associated locking members are located in an axially inner position and the two associated balls are located in a position slightly projecting from the housing, in which position they are held biased by the respective compression spring, and an active position, in which the two associated locking members are located in an axially outer position, in which they abut against the respective ball axially locking it in the projecting position.