A housing including a first viewing direction and a second viewing direction opposite to the first viewing direction, a first display unit disposed to be spaced from a top surface on a side of one end of the housing at a first interval with a display surface facing the housing, a second display unit disposed on a side of the other end of the housing, a first optical element configured to transmit a portion of light emitted from the first display unit and reflect a portion of the light, a second optical element 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 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.