DISPLAY DEVICE FOR VEHICLE

A display device (1) for a vehicle includes: a first display device (10) including a reflection type hologram (11) that is disposed on a windshield (101) of a vehicle (100), and a first projection part (12) that projects first display light (30) toward the hologram, and displaying a first display image (41) by diffraction light (40) diffracted by the hologram; and a second display device (20) including a second projection part (21) that projects second display light (50) toward the windshield, and displaying a second display image (61) by reflection light (60) reflected by the windshield. In the windshield, a first region where the first display light is incident and a second region where the second display light is incident overlap with each other, the second projection part includes a filter part (22) that cuts light in a predetermined wavelength region from the second display light, and the predetermined wavelength region is a wavelength region of the light diffracted by the hologram.