A vehicle display device comprising: a display that emits a display image as display light to be visually recognized as a virtual image by an occupant of a vehicle, wherein the display includes: a display panel that is formed in a rectangular shape and displays the display image on the basis of light from a light source; and a housing including a locking mechanism that locks the display panel, the locking mechanism includes a first support part that supports a first end at one in a first direction of both ends of the display panel in a plane direction, and a second support part that supports a second end at the other end in the first direction of the display panel in a support state in which the display panel is supported by the first support part, the first support part and the second support part are formed at relatively different positions in an optical axis direction of the display light, characterized in that the second support part includes a pair of urging portions that urge the display panel toward the first end in the support state, and at least one first receiving portion that is formed protruding from an inner wall of the housing and receives a lower surface of a second end of the display panel in the support state, each of the urging portions is formed curving in an S shape when viewed from the optical axis direction and includes a fixed end portion fixed to the inner wall of the housing, a distal end portion formed at an end opposite to the fixed end portion, and an extending portion extending between the fixed end portion and the distal end portion, and the distal end portion includes an abutting surface that abuts an end surface of the second end of the display panel in the support state, and a second receiving portion that protrudes from the abutting surface toward the display panel and interposes the second end between the second receiving portion and the first receiving portion. a display that emits a display image as display light to be visually recognized as a virtual image by an occupant of a vehicle, wherein the display includes: a display panel that is formed in a rectangular shape and displays the display image on the basis of light from a light source; and a housing including a locking mechanism that locks the display panel, a display panel that is formed in a rectangular shape and displays the display image on the basis of light from a light source; and a housing including a locking mechanism that locks the display panel, the locking mechanism includes a first support part that supports a first end at one in a first direction of both ends of the display panel in a plane direction, and a second support part that supports a second end at the other end in the first direction of the display panel in a support state in which the display panel is supported by the first support part, the first support part and the second support part are formed at relatively different positions in an optical axis direction of the display light, characterized in that the second support part includes a pair of urging portions that urge the display panel toward the first end in the support state, and at least one first receiving portion that is formed protruding from an inner wall of the housing and receives a lower surface of a second end of the display panel in the support state, each of the urging portions is formed curving in an S shape when viewed from the optical axis direction and includes a fixed end portion fixed to the inner wall of the housing, a distal end portion formed at an end opposite to the fixed end portion, and an extending portion extending between the fixed end portion and the distal end portion, and the distal end portion includes an abutting surface that abuts an end surface of the second end of the display panel in the support state, and a second receiving portion that protrudes from the abutting surface toward the display panel and interposes the second end between the second receiving portion and the first receiving portion.