A display device is for displaying a virtual image in front of a driver of a vehicle. The display device includes a detecting unit that receives light surrounding the vehicle, and detects a brightness of the received light; a restricting unit that restricts an angle of the received light; a correcting unit that adjusts a luminance of a display image, according to the detected brightness of the light; and a displaying unit that superimposes and displays the display image on a field of vision of the driver as the virtual image, based on the adjusted luminance. The restricting unit includes two opening restricting elements arranged on a front side of the detecting unit, such that an angle ?2 at which the detecting unit receives the light is restricted according to an angle ?1 formed by light beams directed from the virtual image toward eyes of the driver.

A structure of a scale graduation includes: a meter dial plate, a light-guiding body made of a translucent material in a dark color, a three-dimensional graduation disposed in a protruding manner on a front surface of the light-guiding body and made of a translucent material in the dark color disposed on the front side of the meter dial plate, and a light source that makes light enter the three-dimensional graduation through the light-guiding body. When the light source emits outgoing light, the three-dimensional graduation lights on in a light color different from the dark color.

An instrument cluster, in particular for a vehicle, has a dial with a plurality of graphic areas, which are backlit by a device provided with at least one light source, with a front light-guiding element having a front face at least partially covered by a back surface of the dial, and with a rear light-guiding element; the latter has a receiving portion facing said light source and a transmitting portion, which transmits and guides the light received by the receiving portion and is spaced apart from and faces a rear face of the front light-guiding element; the rear face of the front light-guiding element has an optical compensation system, having curved convex or curved concave lens surfaces, for varying the intensity of the light transmitted from said transmission portion to the different graphic areas.

An information display portion indicates vehicular information relevant to a vehicle. A display plate being translucent is located on a viewing side relative to the information display portion. A reflective portion formed in the display plate is configured to be illuminated in a predetermined shape by light emitted from a light source unit. The reflective portion being illuminated is overlapped on the vehicular information indicated by the information display portion and viewable on the viewing side.

A dial plate being nonopaque is in a disc shape. A slit member has slits each extending through the slit member in a thickness direction. A light source is located on an opposite side of the slit member from the dial plate. The light source is configured to emit light through the slits of the slit member toward the dial plate to project images on the dial plate.

A vehicular display device includes a plurality of monitors that include screens displaying vehicle information, a display board including a plurality transmission display portions each of which transmits and displays the screen of the respective monitors from a rear side and which are arranged side by side, a boundary portion that is positioned between the transmission display portions and an index display portion that forms an index row to display a vehicle state value, and an index light source that illuminates the index display portion. The index light source applies ultraviolet light for illuminating the index display portion to the index row from a front side of the display board, and the index row is formed in the display board in front of the transmission display portions over each of the transmission display portions interposing the boundary portion, and the index row is irradiated when receiving the ultraviolet light. Accordingly, the appearance of the display performed by the vehicular display device is improved.

A pointerless instrument cluster utilizes a light source and a focal component to project a light image onto a gauge face plate, thereby projecting an image of a pointer onto the gauge.

An instrument cluster is provided with a display panel having a plurality of graphic areas and with a backlighting device arranged behind the display panel for backlighting the graphic areas. The backlighting device has at least one light source and at least one light-guide element, which is provided with a receiving portion facing the light source for directly receiving a light beam and with at least one transmitting portion for transmitting and guiding the light towards at least one of the graphic areas. A cover is provided for shielding rays of light passing through the receiving portion and directed onto the display panel. The cover defines a channel, which has an inlet facing the receiving portion and at least one outlet facing one of the graphic areas. The channel is shaped in such a way as to transmit light indirectly from its inlet to its outlet.

A vehicle instrument panel having a three-dimensional illumination effect includes a transparent ring having a three-dimensional circular shape, at least one primary scale formed in a front surface of the transparent ring, the at least one primary scale being spaced apart from an adjacent primary scale by a predetermined distance, a reflecting plate for changing a direction of travel of LED light along the transparent ring, generated below the transparent ring, in clockwise and counterclockwise directions, and a prism unit including at least one prism for reflecting a portion of the LED light traveling along the transparent ring toward the at least one primary scale at a predetermined angle.

A gauge assembly includes a gauge surface including at least one graphic, which may be a plurality of graphics defining a scale in a generally circular pattern on the gauge surface. The gauge surface has a viewable side. A light guide has a main body portion disposed adjacent to the gauge surface and corresponding to the shape of the gauge surface. The light guide has a plurality of raised tick marks extending from the main body portion. Each tick mark is viewable via a viewing side of the gauge surface. The light guide includes ends that curve away from the gauge surface to receive light. The light guide is configured to provide illumination to the illuminable graphic(s) and the plurality of tick marks.