Vehicular display device
First Claim
1. A vehicular display device for use with a vehicle that has an instrument panel, the vehicular display device comprising:
- a display unit that displays visible information;
a light projection unit that includes a reflection member which reflects light containing the visible information displayed on the display unit and projects the reflected light to a predetermined observation region to display the visible information as a virtual image;
a light path adjustment mechanism that switches an imaging position of the virtual image visually recognizable at the observation region between at least two positions arranged in an upward and downward direction;
an illuminance detection unit that detects an intensity of external light affecting visibility of the virtual image; and
an imaging position control unit that controls the light path adjustment mechanism to change the imaging position of the virtual image to a first position that overlaps with a portion of the instrument panel, at which the virtual image is less influenced by the external light, or to a second position that is spaced away from the instrument panel, at which the virtual image is easily influenced by the external light, depending upon a magnitude of the illuminance detected by the illuminance detection unit.
2 Assignments
0 Petitions
Accused Products
Abstract
A vehicular display device includes a display unit that displays visible information, a light projection unit that includes a reflection member which reflects light containing the visible information displayed on the display unit and projects the reflected light to a predetermined observation region to display the visible information as a virtual image, a light path adjustment mechanism that switches an imaging position of the virtual image between at least two positions, an illuminance detection unit that detects an intensity of external light affecting visibility of the virtual image, and an imaging position control unit that controls the light path adjustment mechanism depending upon the illuminance and changes the imaging position to a first position, at which the virtual image is less influenced by the external light, or to a second position, at which the virtual image is easily influenced by the external light.
6 Citations
4 Claims
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1. A vehicular display device for use with a vehicle that has an instrument panel, the vehicular display device comprising:
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a display unit that displays visible information; a light projection unit that includes a reflection member which reflects light containing the visible information displayed on the display unit and projects the reflected light to a predetermined observation region to display the visible information as a virtual image; a light path adjustment mechanism that switches an imaging position of the virtual image visually recognizable at the observation region between at least two positions arranged in an upward and downward direction; an illuminance detection unit that detects an intensity of external light affecting visibility of the virtual image; and an imaging position control unit that controls the light path adjustment mechanism to change the imaging position of the virtual image to a first position that overlaps with a portion of the instrument panel, at which the virtual image is less influenced by the external light, or to a second position that is spaced away from the instrument panel, at which the virtual image is easily influenced by the external light, depending upon a magnitude of the illuminance detected by the illuminance detection unit. - View Dependent Claims (2, 3, 4)
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Specification