Title:
車両用照明装置、および車両用灯具
Document Type and Number:
Japanese Patent JP7319591
Kind Code:
B2
Abstract:
To provide a vehicular lighting device capable of suppressing change in light distribution characteristics caused when the number of light emitting elements to be turned on is decreased, and a vehicular lighting fixture.SOLUTION: A vehicular lighting device according to an embodiment comprises: a socket; a substrate provided on one end part side of the socket; three or more light emitting elements provided on the substrate; and a control part configured to decrease the number of light emitting elements to be turned on when an input voltage drops to a predetermined value or less. When viewed from a direction along a center axis of the vehicular lighting device, the control part can turn off a first light emitting element provided overlapping the center axis, and a pair of second light emitting elements provided across the center axis at the same distance from the center axis.SELECTED DRAWING: Figure 6
Inventors:
Daisuke Kosugi
Application Number:
JP2019211224A
Publication Date:
August 02, 2023
Filing Date:
November 22, 2019
Export Citation:
Assignee:
Toshiba Lighting & Technology Corporation
International Classes:
B60Q1/26; F21S43/14; F21S43/15; F21S43/19
Domestic Patent References:
| JP2015214173A |
Attorney, Agent or Firm:
Hiroshi Ichikawa
Tatsuaki Shirai
Kohei Hoshino
Tatsuaki Shirai
Kohei Hoshino