US 11,732,862 B2
Indicator lamp, vehicle indicator lamp with said indicator lamp, vehicle exterior member, and vehicle
Yu Sasaki, Kanagawa (JP); Tatsuomi Nakayama, Kanagawa (JP); Yusuke Hirata, Kanagawa (JP); Takao Marutani, Tokyo (JP); and Tadayoshi Sawada, Tokyo (JP)
Assigned to NISSAN MOTOR CO., LTD., Yokohama (JP); and MITSUBISHI CHEMICAL CORPORATION, Tokyo (JP)
Appl. No. 17/762,163
Filed by NISSAN MOTOR CO., LTD., Yokohama (JP); and MITSUBISHI CHEMICAL CORPORATION, Tokyo (JP)
PCT Filed Jul. 30, 2020, PCT No. PCT/JP2020/029287
§ 371(c)(1), (2) Date Mar. 21, 2022,
PCT Pub. No. WO2021/059740, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 2019-172738 (JP), filed on Sep. 24, 2019.
Prior Publication US 2022/0364704 A1, Nov. 17, 2022
Int. Cl. F21S 43/20 (2018.01); F21S 43/14 (2018.01)
CPC F21S 43/20 (2018.01) [F21S 43/14 (2018.01)] 15 Claims
OG exemplary drawing
 
1. An indicator lamp comprising:
a lamp body;
a light source unit being disposed inside the lamp body; and
a light transmissive resin member being disposed at a position for transmitting light that is emitted from the light source unit and for outputting the light from the lamp body,
the light source unit being configured to emit red light having a maximum value of light intensity in a wavelength range of 600 to 700 nm,
the light transmissive resin member having an L* value of 35 or less, a transmittance of light having a wavelength of 675 nm of 90% or greater in a state in which an optical path length of transmitting light is 2 mm, and a total light transmittance of 5% or greater in a state in which an optical path length of transmitting light is 2 mm.