US 12,280,719 B2
Blind spot display device
Kazuyuki Ishihara, Nisshin (JP); and Hiroshi Ando, Nisshin (JP)
Assigned to DENSO CORPORATION, Kariya (JP); TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP); and MIRISE Technologies Corporation, Nisshin (JP)
Filed by DENSO CORPORATION, Kariya (JP); TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP); and MIRISE Technologies Corporation, Nisshin (JP)
Filed on Oct. 10, 2022, as Appl. No. 17/962,573.
Claims priority of application No. 2021-173042 (JP), filed on Oct. 22, 2021.
Prior Publication US 2023/0128607 A1, Apr. 27, 2023
Int. Cl. B60R 1/10 (2006.01); B60R 1/08 (2006.01)
CPC B60R 1/10 (2013.01) [B60R 1/081 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A blind spot display device displaying an image of a blind spot blocked by an obstacle, the blind spot display device comprising:
an incidence surface through which external environment light beams enter, the external environment light beams being transmitted from the blind spot;
a light guide member guiding the external environment light beams entered through the incidence surface;
a first reflecting surface arranged opposite to the blind spot with respect to the light guide member, the external environment light beams guided by the light guide member being reflected on the first reflecting surface;
a second reflecting surface arranged close to the blind spot with respect to the light guide member, the second reflecting surface being opposed to the first reflecting surface, the external environment light beams guided by the light guide member being reflected on the second reflecting surface; and
a plurality of prism portions arranged opposite to the blind spot with respect to the light guide member and protruding toward a display region, the display region being defined as a region opposite to the blind spot with respect to the light guide member, the external environment light beams emitting toward the display region through the plurality of prism portions after traveling through the light guide member,
wherein
the external environment light beams enter the light guide member through the incidence surface, and then reflect alternately on the first reflecting surface and the second reflecting surface while traveling in an arranging direction of the plurality of prism portions distant from the incidence surface,
a part of the external environment light beams emit toward the display region through the plurality of prism portions, and
apexes of the plurality of prism portions are arranged in a three dimensional manner not along a plane.