Patent attributes
A head-mounted display device includes a body, two extension members and an adjustable fixing member. The body is adapted to lean against a front portion of a head of the user. The two extension members are disposed opposite each other. First ends of the two extension members are respectively coupled to two opposite ends of the body and configured to rotate with respect to the body so as to lean against two side portions of the head. The adjustable fixing member is coupled to each second end of the two extension members to lean against the back portion or top portion of the head, wherein the body is fixed on the head through the two extension members and the adjustable fixing member. Each of the extension members is adapted to contact or to depart from the two side portions of the head by rotating with respect to the body.