US 11,746,983 B2
Vehicle signal light
Ayumi Yamaguchi, Tokyo (JP); Naoya Iwasaki, Tokyo (JP); Takahiro Watanabe, Tokyo (JP); Daisaku Yamaguchi, Tokyo (JP); Yasushi Kita, Tokyo (JP); Takako Kimura, Tokyo (JP); and Wataru Nakashima, Tokyo (JP)
Assigned to STANLEY ELECTRIC CO., LTD., Tokyo (JP)
Filed by STANLEY ELECTRIC CO., LTD., Tokyo (JP)
Filed on May 20, 2022, as Appl. No. 17/749,797.
Claims priority of application No. 2021-087251 (JP), filed on May 24, 2021.
Prior Publication US 2022/0373153 A1, Nov. 24, 2022
Int. Cl. F21S 43/14 (2018.01); F21S 43/249 (2018.01); F21S 43/20 (2018.01); F21S 43/30 (2018.01); F21W 103/35 (2018.01); F21W 103/20 (2018.01)
CPC F21S 43/14 (2018.01) [F21S 43/249 (2018.01); F21S 43/26 (2018.01); F21S 43/30 (2018.01); F21W 2103/20 (2018.01); F21W 2103/35 (2018.01)] 14 Claims
OG exemplary drawing
 
1. A vehicle signal light comprising:
a first light source configured to emit red light with a wavelength of 620 nm or longer;
a second light source configured to emit amber light that does not include light with a wavelength of 620 nm or longer;
a light emitting unit configured to emit light via transmission of light obtained through mixing of the red light and the amber light; and
an optical component configured to control the red light and the amber light so that the light obtained through mixing of the red light and the amber light is transmitted through the light emitting unit; wherein
the first light source and the second light source are simultaneously turned on and are configured to emit light with a higher luminous intensity in response to a braking operation,
an emission intensity of the first light source is higher than that of the second light source,
a ratio of integrated intensity of the red light to that of the amber light after transmission through the light emitting unit is adjusted so that a chromaticity range of the light obtained through mixing of the red light and the amber light is defined as x>0.71 and y<0.289 in an xy chromaticity coordinate of CIE color space, and
the ratio of the integrated intensity after transmission through the light emitting unit is red:amber=100:2.7 to 4.0.