Head mounted display device

FIG. 1 is a perspective view of a head mounted display device showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof where the right side view is a mirror image;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a reference perspective view thereof showing the state that a data cable with earphones is connected to the subject design; and,

FIG. 8 is a reference view thereof showing the part of the head mounted display device which is consisted or transparent material by hatching.

The broken lines show unclaimed subject matter only and form no part of the claimed design.