Nippon Seiki Co., Ltd.

Tsuyoshi Kawaguchi

Minoru Takebe

Takashi Yamazoe

Takeshi Yachida

Naoaki Hayakawa

Provided is a head-up display device that can detect background brightness with a simple constitution. A HUD device () is provided with: a display device () that outputs display light (L) that shows a display image; a combiner () that has a concave surface () to which the display light (L) output by the display device () is incident, said combiner () concentrating the incident display light (L) so as to allow an observer () to see the display image from the concave surface () side superimposed on a background from the front; and an optical sensor () that is positioned below the combiner () and detects the brightness of the light reaching that optical sensor (). The combiner () has a light guide body () which is at the lower edge part thereof and is integrated with the combiner (). The light guide body () has a facing surface () facing the optical sensor () in the vertical direction and guides external light incident from the front downward, outputting the guided light from the facing surface (). The optical sensor () detects the brightness of the light output from the facing surface ().

Head-up display device

A meter for vehicle capable of improving design and visibility in an after-meter of single face type is provided. The meter for vehicle includes a transmitting ring-shaped memberplaced to surround an analog display portionbetween a case bodyand a cover member, a first light sourceemitting first illumination light L, and a second light sourceemitting second illumination light L. The meter for vehicle also includes a light-guide memberplaced between the display plateand the first light sourceand having an entrance portioninto which the first illumination light Lenters, a first exit portionfrom which the first illumination light Lexits toward the pointer, a first reflecting portionwhich reflects the first illumination light Lin a direction in parallel with the display plate, a second reflecting portionwhich reflects the first illumination light L, reflected by the first reflecting portion, in a direction perpendicular to the display plate, and a second exit portionfrom which the first illumination light Lreflected by the second reflecting portionexits toward the ring-shaped member.

Growing community of inventors

Niigata, Japan

Tsuyoshi Kawaguchi