HEAD-UP DISPLAY DEVICE

The purpose of the present invention is to provide a head-up display device that can reduce the possibility of abnormal noise being generated due to applied vibrations. This HUD device (100) is provided with the following: a display (2) that projects display light (L); a reflection part (4) that reflects the display light (L); a supported part (60) that is disposed on the end of the reflection part (4) and that includes a cylindrical shaft (63); a support part (70) through which the shaft (63) passes and which rotatably supports the supported part (60); and an elastic member (S1) which has a U-shape cross-section and in which a hole (S1c) is formed in one end section (S1a) and a spherical-surface protrusion (S1d) protruding towards the hole (S1c) is formed in the other end section (S1b) that passes through the center axis of the hole (S1c) In a state where the supported part (60) is supported by the support part (70), the distal end of the shaft (63) passes through the hole (S1c), the distal end-side inner circumferential edge of the shaft (63) abuts the protrusion (S1d), and the inner surface of the one end section (S1a) and that of the other end section (S1b) of the elastic member (S1) cause the supported part (60) and the support part (70) to press against each other.