US 12,222,078 B2
Vehicle lamp having two lamp units with a least one comprising a light guide
Shohei Kanezuka, Shizuoka (JP); and Haruka Morii, Shizuoka (JP)
Assigned to KOITO MANUFACTURING CO., LTD., Tokyo (JP)
Filed by KOITO MANUFACTURING CO., LTD., Tokyo (JP)
Filed on Aug. 31, 2023, as Appl. No. 18/240,366.
Application 18/240,366 is a continuation of application No. 17/782,941, granted, now 11,815,237, previously published as PCT/JP2020/045473, filed on Dec. 7, 2020.
Claims priority of application No. 2019-224321 (JP), filed on Dec. 12, 2019; application No. 2019-224322 (JP), filed on Dec. 12, 2019; and application No. 2019-224323 (JP), filed on Dec. 12, 2019.
Prior Publication US 2023/0408055 A1, Dec. 21, 2023
Int. Cl. F21S 41/24 (2018.01); F21S 41/148 (2018.01); F21S 41/33 (2018.01); B60Q 1/04 (2006.01)
CPC F21S 41/24 (2018.01) [F21S 41/148 (2018.01); F21S 41/33 (2018.01); B60Q 1/04 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A vehicle lamp comprising:
a light source; and
a light guide configured to guide light from the light source to emit the light, wherein
the light guide includes:
an incident surface on which the light from the light source is incident;
an emission surface from which the guided light is emitted outside; and
a reflection surface on which the light from the incident surface is internally reflected toward the emission surface,
the reflection surface includes a plurality of contiguous reflection surface sections,
each boundary between the plurality of reflection surface sections is provided with a reflection step configured to internally reflect the light divergently or diffusely,
the light guide is a translucent light-guiding plate,
the incident surface is on one plate surface of the light-guiding plate,
the reflection surface is on the other plate surface of the light-guiding plate such that the reflection surface faces the incident surface,
the emission surface is on an end surface of the light-guiding plate, and
the emission surface includes a lateral emission step configured to reflect light guided to an edge of the light-guiding plate in a thickness direction of the light-guiding plate to emit the light in the thickness direction.