Luminous display device
View Patent ↗In the rear of a liquid crystal display arranged with an inclination to a line of sight reflected by a concave mirror, a backlight and a focusing lens member are arranged in such a manner that the backlight and the focusing lens member are positioned on a plane perpendicular to the line of sight reflected by the concave mirror, and the focusing lens member focuses beams of illumination light from the backlight in such a manner that the beams of illumination light stays within a range of the liquid crystal display.
1. A luminous display device comprising:
a reflecting member arranged with an inclination from being perpendicular to a line of sight, said line of sight being from an eye point of a viewer to a virtual image;
a liquid crystal display arranged with an inclination to the line of sight as reflected by the reflecting member;
a backlight; and
a focusing lens member arranged between the backlight and the liquid crystal display,
wherein illumination light from the backlight is irradiated from the rear of the liquid crystal display and light of a display image displayed on the liquid crystal display is emitted toward the reflecting member, so that the virtual image being seen on the reflecting member is image-formed on a plane perpendicular to the line of sight,
wherein the backlight is arranged in such a manner that a luminous surface of the backlight is perpendicular to the line of sight as reflected by the reflecting member,
wherein the focusing lens member focuses beams of the illumination light in such a manner that the beams of the illumination light emitted from the luminous surface of the backlight stay inside the reflecting member and that the beams of the illumination light, which pass through the liquid crystal display to become the light of a display image, stay inside the reflecting member.
2. The device according to claim 1 , wherein the focusing lens member is constructed in an arrayed form in which a plurality of focusing lenses are arranged on a plane.
3. The device according to claim 2 , wherein the backlight is constructed in such a manner that a plurality of point light sources are arranged on a plane and each focusing lens is arranged so that an optical axis of the focusing lens is aligned with that of one of the point light sources in a one to one corresponding relationship.