HEAD-UP DISPLAY DEVICE

Provided is a head-up display device with which the vibration resistance of a combiner after installation is improved, and with which the combiner can easily be installed and removed. This head-up display device is equipped with: a display unit that emits display light; a combiner that receives the display light and displays a virtual image; a combiner holder that supports the combiner; and a chassis that houses the display unit and has a mounting unit on which the combiner holder is mounted. The mounting unit has a securing lever capable of rotating around a shaft part, and when a pressing bar of the securing lever is rotated in the direction toward the combiner holder while the combiner holder is mounted on the mounting unit, the securing lever secures the combiner holder on the mounting unit. Furthermore, with this head-up display (HUD) device, when the pressing bar is rotated in the other direction while the combiner holder is mounted on the mounting unit, the attachment of the combiner holder to the mounting unit is released.