The invention relates to the technical field of display devices, in particular to a display device and a transportation vehicle. The display device comprises an emission device which forms peeping prevention pictures on a front windshield of a vehicle body and polarized glasses used for viewing the peeping prevention pictures. According to the technical scheme, the peeping prevention pictures are formed on the front windshield of the vehicle body through the emission device, and therefore the formed pictures can not interfere the driving of a driver, the driver can drive attentively, and meanwhile passengers can wear the polarized glasses to view the pictures on the front windshield. By means of the display device and the transportation vehicle, the emission device forms the peeping prevention pictures on the front windshield, so that the display area is increased, meanwhile, the view of the passengers is facilitated, the passengers located on the rear portion of the vehicle body can observe the pictures clearly, and the visual effect displayed when the passengers view the pictures is improved.