Head rest device for an automobile

A headrest device of a vehicle is provided to rotate a lever to release a locking state of an upper latch and rotate a headrest to fold the headrest so as to secure the field of rear vision of a user riding the vehicle. A headrest device of a vehicle includes a lever(10), an upper latch(20), a protrusion and a lower latch(30). The lever includes a groove and a leg extended from the groove downward. A driving arm(70) is fitted in the groove and fixed thereto. The upper latch includes a latching part and a latching groove. One side of the outer face of the upper latch comes into contact with the leg. The protrusion corresponds to the latching groove such that the upper latch is locked. The lower latch has a groove corresponding to the latching portion.