A visually-distracted driving detection device (100) comprises: a main camera (1) that is provided to the driver seat of a vehicle and that takes an image of the face of a driver； a visual-distraction determination unit (13) for determining whether or not visually-distracted driving is being performed, on the basis of the direction of the line of sight of the driver obtained from the image taken by the main camera (1)； an alert output unit (14) for outputting an alert when it is determined that visually-distracted driving is being performed； and auxiliary cameras (2 to 6) provided around the locations at which respective specific vehicle-mounted components to be visually recognized by the driver during running of the vehicle are disposed. In a case where the line of sight of the driver obtained from the image taken by the main camera (1) is oriented to a direction of visual-distraction and the line of sight of the driver obtained from an image taken by any of the auxiliary cameras (2 to 6) is oriented to the direction toward the corresponding one of the specific vehicle-mounted components, the visual-distraction determination unit (13) determines, if the period during which the line of sight of the driver is oriented in the direction toward the specific vehicle-mounted component exceeds a reference period, that visually-distracted driving is being performed, and determines, if this period does not exceed the reference period, that visually-distracted driving is not being performed.Un dispositif de détection de conduite distraite visuellement (100) comprend : une caméra principale (1) qui est située sur le siège du conducteur d'un véhicule et qui prend une image du visage du conducteur ； une unité de détermination de distraction visuelle (13) conçue pour déterminer si une conduite distraite visuellement est ou non en cours sur la base de la direction de la ligne de visée du conducteur obtenue à partir de l'image prise par la caméra principale (1) ； une unité d'émissi
