HEAD UP DISPLAY APPARATUS

A head up display apparatus capable of suppressing discomfort to a user caused by an operating noise while preventing damage by sunlight is provided. Further, it contributes to “Goal 3: Ensure healthy lives and promote well-being for all at all ages” in the Sustainable Development Goals (SDGs). Thus, a video light projector includes a drive mechanism and projects video light emitted from a video display to a display region , thereby making the projected video light visually recognized as a virtual image. A controller judges whether or not a door unlock signal which is one of information related to a transportation is received, and judges whether or not to cause the video display to start displaying the video by operating the drive mechanism in the video light projector based on a display start condition when the door unlock signal is received.