Display device for vehicle

A display device for a vehicle comprising:

• a substrate housing portion that stores a circuit substrate that outputs an image signal of an image to be displayed;
• an optical unit that is provided at one end of the substrate housing portion and that generates and projects an image based on the image signal output from the circuit substrate;
• and
• a combiner that is provided at one end of the optical unit and on which the image is projected,
• wherein the optical unit has:
• an optical unit main body that includes a light source and an image display element;
• and
• a projection unit that is attached to the optical unit main body, that includes a projection mirror and an intermediate image screen that forms a real image, and that determines a projection direction,
• wherein the optical unit main body has a first main body surface and a second main body surface, which is a surface facing the first main body surface, and
• wherein the projection unit has two arrangement states:
• a first state where a projection port of the projection unit is on the side of the first main body surface;
• and a second state where the projection port is on the side of the second main body surface.