Head up display apparatus

A head up display apparatus installed in a transportation, the head up display apparatus comprising:

• an information acquisition unit configured to acquire information related to the transportation;
• a video display configured to display a video and emit video light of the displayed video;
• a video light projector including a drive mechanism and configured to project the video light emitted from the video display to a display region, thereby making the projected video light visually recognized as a virtual image;
• and
• a controller configured to control the video display and the video light projector based on the information related to the transportation acquired by the information acquisition unit,
• wherein the video light projector is controlled to a non-projection mode in which it does not project the video light to the display region or a projection mode in which it projects the video light to the display region,
• wherein the controller judges whether or not a door unlock signal which is one of the information related to the 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, and
• wherein the controller causes the video light projector to transition to the non-projection mode by operating the drive mechanism when the display start condition is not satisfied within a predetermined time after the video light projector starts transitioning from the non-projection mode to the projection mode.

A head up display apparatus installed in a transportation, the head up display apparatus comprising:

• an information acquisition unit configured to acquire information related to the transportation;
• a video display configured to display a video and emit video light of the displayed video;
• a video light projector including a drive mechanism and configured to project the video light emitted from the video display to a display region, thereby making the projected video light visually recognized as a virtual image;
• and
• a controller configured to control the video display and the video light projector based on the information related to the transportation acquired by the information acquisition unit,
• wherein, in a series of controls including an operation control of the drive mechanism in the video light projector and a start control of the display of the video in the video display executed by the controller, two judgments including a first judgment executed in a state where a user is outside the transportation and a second judgment executed in a state where the user is inside the transportation are used, and
• wherein a judgment as to whether or not a door unlock signal is received is executed by the first judgement in a state where the user is outside the transportation, and a judgment based on a display start condition is executed by the second judgement in a state where the user is inside the transportation.