HEAD-UP DISPLAY DEVICE FOR VEHICLE AND SELF-CHECKING METHOD THEREFOR

摘要

A head-up display device and a self-checking method therefor are provided, which are able to suppress the direct output of a laser beam to outside. A reflecting means reflects an image generated by a scanning means and projects the image outside of a case, and an angle-adjusting means adjusts the reflecting means to a desired angle. After the ignition switch of the vehicle is turned on, a light-emitting means outputs a scanning laser beam, and the value of the current flowing to the light-emitting means is detected, or a first light intensity, which is the light intensity of the scanning laser beam, is detected. For a period extending at least from the output of the scanning laser beam by the light-emitting means to the establishment of a predetermined condition, the angle-adjusting means is controlled such that the reflecting means is set to a non-visible position at which the scanning laser beam is reflected inside the case.

主权项

1. A head-up display device for a vehicle which projects an image from a light transmission portion, the head-up display device comprising:
a housing which has the light transmission portion; light emitting means for outputting laser light, scanning means for scanning the laser light from the light emitting means to generate the image; reflection means for reflecting the image generated by the scanning means to project the image outside the housing; angle adjustment means for adjusting the reflection means at a desired angle; test laser light output means for causing the light emitting means to output test laser light based on test laser light output data recorded in the recording means in advance after a start switch of the vehicle is turned on; light source state detection means for detecting a current value in the light emitting means or first light intensity, which is light intensity of the test laser light, when the light emitting means emits the test laser light; and invisible position holding means for controlling the angle adjustment means such that the position of the reflection means is an invisible position at which the test laser light is reflected inside the housing at least until a predetermined condition is established after the light emitting means outputs the test laser light.