DISPLAY DEVICE, DISPLAY SYSTEM, AND VEHICLE

Disclosed are a display apparatus (301) and a display system (1400), which may be used in a transportation means, for example, mounted on a seat back (302) or a seat headrest. The display apparatus (301) includes an image generation unit (401), a window unit (402), and an image magnification unit (403). The image generation unit (401) is configured to emit image light to the window unit (402). The window unit (402) reflects the image light from the image generation unit (401) to the image magnification unit (403), and transmits the image light from the image magnification unit (403). The image magnification unit (403) is configured to reflect the image light from the window unit (402) to the window unit (402). The display apparatus (301) has a small size and a simple structure, so that a user can view long-distance and large-format display effect through the window unit (402).