US 12,253,233 B2
Vehicle lighting device and vehicle lamp
Hiraku Mori, Ehime (JP); and Daisuke Kosugi, Ehime (JP)
Assigned to Toshiba Lighting & Technology Corporation, Kanagawa (JP)
Filed by Toshiba Lighting & Technology Corporation, Kanagawa (JP)
Filed on Mar. 8, 2023, as Appl. No. 18/180,148.
Claims priority of application No. 2022-075770 (JP), filed on May 2, 2022.
Prior Publication US 2023/0349531 A1, Nov. 2, 2023
Int. Cl. H05B 45/48 (2020.01); F21S 41/19 (2018.01); F21S 41/663 (2018.01); F21S 43/19 (2018.01)
CPC F21S 41/663 (2018.01) [F21S 41/192 (2018.01); F21S 43/195 (2018.01)] 12 Claims
OG exemplary drawing
 
1. A vehicle lighting device, comprising:
a socket;
a substrate provided on one end portion side of the socket;
a plurality of light emitting elements provided on the substrate; and
a control element provided on the substrate and electrically connected to the plurality of light emitting elements,
wherein the control element is configured to:
turn on some of the plurality of light emitting elements when an input voltage is lower than a first voltage;
turn on all of the plurality of light emitting elements when the input voltage exceeds a second voltage higher than the first voltage; and
turn on all of the plurality of light emitting elements and change at least one of a total luminous flux of the plurality of light emitting elements and a current flowing through the plurality of light emitting elements according to the input voltage when the input voltage is equal to or higher than the first voltage and equal to or lower than the second voltage.