Aerial image display device

An aerial image display device comprising:

• a housing including a first viewing direction facing inward from an outside of one end and a second viewing direction facing inward from an outside of an other end;
• a first display unit disposed to be spaced from a top surface on a side of the one end of the housing at a first interval with a display surface facing the housing;
• a second display unit disposed to be spaced from a top surface on a side of the other end of the housing at a second interval with a display surface facing the housing;
• a first optical element having a plane, a size of which is larger than a size of the first display unit in plan view, disposed to be inclined toward the side of the one end, and configured to transmit a portion of light emitted from the first display unit and reflect a portion of the light;
• a second optical element having a plane, a size of which is larger than a size of the second display unit in plan view, disposed to be inclined toward the side of the other end, and configured to transmit a portion of light emitted from the second display unit and reflect a portion of the light;
• and
• a third optical element disposed outside a lower surface of the housing, and configured to transmit a portion of the light emitted from the first display unit and the second display unit and reflect a portion of the light;
• wherein sizes of the first interval and the second interval are different.