The vehicular display device 1 described above causes the reflection portion 3 to reflect, to the windshield WS, the display light L1 that is emitted from the emitting portion 2 and is subjected to crossing in the direction intersecting the optical-axis direction. Then, with reflection of the display light L1 reflected to the windshield WS by the reflection portion 3, to the eye point EP by the windshield WS, the vehicular display device 1 can perform display with the display light L1 to the windshield WS. The vehicular display device 1 has the cross point CP at which crossing occurs in the display light L1, in the optical path between the emitting portion 2 and the reflection portion 3, so that the width of the optical path can be made relatively narrow in the vicinity of the cross point CP. As a result, the casing 4 can be rendered compact. In this case, the vehicular display device 1 has the cross point CP for the display light L1 located inside the inner case 41 housed in the lower case 42 in the casing 4, together with the focal area FA on which the external light L2 reflected from the reflection portion 3 after being incident on the reflection portion 3 from outside the casing 4 focuses.