Steam ironing and/or smoothing appliance comprising an ironing board that can be immobilized in various tilted positions

A steam ironing and/or smoothing appliance comprising a smoothing tool comprising at least one hole for emission of steam and an ironing board against which a garment to be ironed can be placed for a steam treatment, the ironing board being mounted with the ability to pivot by a hinge device enabling the ironing board to be immobilized in various tilted positions, the hinge device comprising a first part which is mobile in rotation in relation to a second part, the first part comprising at least one notch in which is engaged at least one locking element carried by the second part in order to prevent the hinge device from rotating, the second part being mobile in translation in relation to the first part according to a course and a direction enabling the locking element to engage and disengage in the notch, wherein the hinge device comprises a finger, carried by either the first or second part, which is mounted with the ability to slide in a groove arranged in the other of the first or second part, the finger being configured to pivot freely in the groove.