Abstract: The present invention addresses the problem of providing a head-up display device having a structure such that the procurement cost of a bezel can be suppressed. A bezel part is integrally formed on a curved wall portion of an upper cover. Since the upper cover is a die-cast product, the curved wall part can be manufactured by one-time casting (die-casting) with a through-hole and the bezel part. Since the bezel part is integral with the upper cover, it is possible to reduce the procurement cost of the bezel part compared to when the bezel part is a separate part. If the bezel is configured as a separate part having a high heatproof temperature, the procurement cost of the bezel increases. However, if the bezel part is formed integrally with the case simply by partially deforming the case, as described in the present invention, it is possible to reduce the procurement cost of the bezel part.