To provide a display device for vehicle 4 that has novel and excellent visual quality with the stereoscopic effect in the depth direction.

The display device has a light guide 8 with the length on the other side of display board 21 and the light is introduced from edge parts 5a and 5b in this light guide 8. The light is reflected inside the light guide 8, and the light is radiated to the external from a light emission surface 8a of the light guide 8. The display device has air gap parts 25a1, 25b1, 25c1, 25d1, 25a2, 25b2, 25c2 and 25d2 (a generic name is an air gap part 25) that are separated mutually in the depth direction and disposed in the light guide 8 and compose a plurality of light reflective parts that reflect the light from the light source 10-13 in the direction that intersects with the plane of the light display board 21. The display device for vehicle 4 that has novel and excellent visual quality with the stereoscopic effect in the depth direction can be obtained by the light that reflects in the air gap part 25 being radiated to the external of light guide 8. A ruggedness part 27 may be provided in the inner surface of the air gap part 25.