An information provision device comprising: an image-light projection device configured to project an image light to a light transmission member so as to display a for-driver information image indicating for-driver information to be provided for a driver of a mobile object in a prescribed display area that is visually recognized by the driver through the light transmission member ahead of the mobile object in a direction of travel, the prescribed display area including an active-information image display area that continues displaying an active-information image (701, 702, 703, 704) indicating active information to be actively recognized by the driver, and a passive-information image display area (A, B) that temporarily displays, at a timing when a prescribed information provision condition is met, a passive-information image (711, 712, 721, 722, 723, 724) indicating passive information to be passively recognized by the driver; a viewpoint detector configured to detect a location of a viewpoint of the driver; and characterized by: a display controller configured to control the image-light projection device by changing a position at which the passive-information image (711, 712, 721, 722, 723, 724) is displayed in the passive-information image display area (A, B) according to a result of detection generated by the viewpoint detector so as to make a perception distance of the driver influenced by the motion parallax of the passive-information image (711, 712, 721, 722, 723, 724) become longer than a perception distance of the driver of the active-information image (701, 702, 703, 704) displayed in the active-information image display area. an image-light projection device configured to project an image light to a light transmission member so as to display a for-driver information image indicating for-driver information to be provided for a driver of a mobile object in a prescribed display area that is visually recognized by the driver through the light transmission member ahead of the mobile object in a direction of travel, the prescribed display area including an active-information image display area that continues displaying an active-information image (701, 702, 703, 704) indicating active information to be actively recognized by the driver, and a passive-information image display area (A, B) that temporarily displays, at a timing when a prescribed information provision condition is met, a passive-information image (711, 712, 721, 722, 723, 724) indicating passive information to be passively recognized by the driver; an active-information image display area that continues displaying an active-information image (701, 702, 703, 704) indicating active information to be actively recognized by the driver, and a passive-information image display area (A, B) that temporarily displays, at a timing when a prescribed information provision condition is met, a passive-information image (711, 712, 721, 722, 723, 724) indicating passive information to be passively recognized by the driver; a viewpoint detector configured to detect a location of a viewpoint of the driver; and characterized by: a display controller configured to control the image-light projection device by changing a position at which the passive-information image (711, 712, 721, 722, 723, 724) is displayed in the passive-information image display area (A, B) according to a result of detection generated by the viewpoint detector so as to make a perception distance of the driver influenced by the motion parallax of the passive-information image (711, 712, 721, 722, 723, 724) become longer than a perception distance of the driver of the active-information image (701, 702, 703, 704) displayed in the active-information image display area.