VEHICULAR DISPLAY DEVICE

There is provided a small-sized HUD device having a high image display reliability and a high thermal reliability. A HUD device includes: an image display unit including a display panel (liquid crystal panel) that displays an image, and an optical system that projects image light of the displayed image onto a windshield of a vehicle, in which a virtual image of the image is visually recognized by light reflected off the windshield. In the image display unit , an effective display region that displays the image is set to a region on a side close to one end of the display panel . The optical system includes a first reflector that reflects the image light emitted from the image display unit and a second reflector that reflects the reflected light of the first reflector toward the windshield. The image display unit is disposed to face the first reflector , and the display panel is disposed in an attitude in which the one end faces the second reflector side