US 12,089,683 B2
Head up display device and helmet
Manabu Yamada, Shobara (JP); Masanori Hiramatsu, Shobara (JP); Kou Satou, Shobara (JP); Motoki Tashima, Shobara (JP); Naoya Matsuoka, Shobara (JP); and Hirotaka Asaoka, Shobara (JP)
Assigned to NS WEST Inc., Hiroshima (JP); and SHOEI CO., LTD., Tokyo (JP)
Filed by NS WEST Inc., Hiroshima (JP); and SHOEI CO., LTD., Tokyo (JP)
Filed on Jun. 17, 2021, as Appl. No. 17/350,149.
Application 17/350,149 is a continuation of application No. PCT/JP2019/049569, filed on Dec. 18, 2019.
Claims priority of application No. 2018-238252 (JP), filed on Dec. 20, 2018; application No. 2018-238253 (JP), filed on Dec. 20, 2018; application No. 2018-238256 (JP), filed on Dec. 20, 2018; application No. 2019-209471 (JP), filed on Nov. 20, 2019; and application No. 2019-209472 (JP), filed on Nov. 20, 2019.
Prior Publication US 2021/0307442 A1, Oct. 7, 2021
Int. Cl. A42B 3/04 (2006.01); A42B 3/22 (2006.01); G02B 1/18 (2015.01); G02B 27/01 (2006.01); G09G 5/10 (2006.01); H04N 9/31 (2006.01); B62J 50/22 (2020.01)
CPC A42B 3/042 (2013.01) [A42B 3/224 (2013.01); G02B 1/18 (2015.01); G02B 27/0172 (2013.01); G09G 5/10 (2013.01); H04N 9/3173 (2013.01); B62J 50/22 (2020.02); G09G 2360/141 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A head-up display device configured to be mounted on a helmet, the helmet including an exterior member and an interior member, the head-up display device comprising:
a projection unit configured to project display light to a projection target, the display light being used for forming a display image capable of being visually recognized as a virtual image by a user wearing the helmet through the projection target, the projection target being disposed in front of an eye of the user and having both light transmittance and light reflection; and
a combiner unit for causing the display image by the display light projected from the projection unit to be visually recognized as the virtual image by the user, wherein
the combiner unit includes a combiner and a support mechanism that supports the combiner in a position in front of the eye of the user wearing the helmet,
the support mechanism includes a stay extending in a top-bottom direction, the stay having an upper portion retained by a holder incorporated in a forehead portion of a helmet body, the stay having a lower end coupled to the combiner through a rotation shaft extending in a left-right direction,
the projection unit includes a light emitter configured to emit display light, a housing having an opening through which display light emitted from the light emitter passes, and a cover member having transparency to light and disposed to cover the opening of the housing,
the projection unit is incorporated in the helmet such that display light to be projected to the projection target through the cover member passes through a cylindrical optical path portion provided in the interior member,
the cover member is disposed at an inner side of the interior member than a surface of the interior member at which an end of the optical path portion at a light emission side is open, and
in the projection unit, a projection portion in which the opening of the housing is covered with the cover member is located inside a chin portion of the helmet body and outside a mouth cover.