HEAD-UP DISPLAY

A HUD comprises an image display device including an LCD panel a virtual image optical system forming an optical path L of an image light emitted from the LCD panel, and an outer housing wherein: the outer housing includes an outer case accommodating the virtual image optical system and having the image display device attached thereto, an upper cover covering an upper portion from which the image light is emitted in the outer case, and a bottom cover covering a bottom portion of the outer case; the bottom cover accommodates the image display device and the bottom surface of the outer case when fixed to the outer case such that the image display device to isolate them form an external space of the outer housing; and fins is formed on an outer surface thereof.