PROBLEM TO BE SOLVED: To provide a head-up display system and a moving body provided with measures against heat. A head-up display system 1 includes display panels 6, 11 and reflects projection modules 2 and 3 configured to project an image displayed on the display panel, and images at least partially. An optical member 71 having a light-shielding function and a controller 5 for controlling the light-shielding function of the optical member are provided between the reflection optical element 4 configured as described above, the projection module and the reflection optical element. [Selection diagram] Fig. 1
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