Abstract: 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.

Abstract: A combiner-type head-up display device has a simplified lid body opening/closing mechanism. The device has a combiner for reflecting light from an indicator toward the driver side to cause the driver to recognize the light as a virtual image. A holder, to which the combiner is attached, moves in the vertical direction from a stored position to a display position through an aperture. Pins are provided on side surfaces of the holder. A support body has vertical guide grooves for guiding the pins. A vertical drive mechanism is provided for driving the holder in the vertical direction. A lid body which has driven arms, which swing by being pushed by the pins as the pins move vertically as the holder is vertically driven, and opens/closes the aperture. Angle adjustment grooves, which enable pins to rotate about pins with pins abutted on one end of the guide grooves, are provided.