Toshiba Lighting & Technology Corporation

Tomohiro Matsuo

Yasuhiro Watanabe

Daisuke Kosugi

Kiyokazu Hino

Toshihiro Hatanaka

Hiromitsu Shiraishi

Ryuji Tsuchiya

Misaki Ueno

Masayuki Ishiyama

Norihiko Ochi

The disclosure provides a vehicle lighting device and a vehicle lamp. The vehicle lighting device includes: a socket; five light-emitting elements, provided on one end side of the socket; and a brightness controller, provided on a light-emitting side of the light-emitting elements and having a plurality of light-shielding parts and a light-transmitting part. One of the light-emitting elements is provided at a position on a central axis of a vehicle lighting device. Four of the light-emitting elements are provided at positions that are rotationally symmetric on a circumference centered on the central axis, respectively. The brightness controller faces the one light-emitting element provided at a position on the central axis. The brightness controller does not face the four light-emitting elements provided at a position on the circumference. The plurality of light-shielding parts provided in the brightness controller are not provided at positions on the central axis.

Vehicle lighting device and vehicle lamp

A vehicle lighting device includes a socket; a substrate; and one first and four second light emitting elements. A square luminance distribution region is defined on light irradiation sides of first and second light emitting elements. A center of distribution region overlaps central axis of device. Distribution region is equally divided into four square first regions whose corners overlap center of distribution region. Each of first regions is equally divided into nine square second regions. A length of one side of second region is 0.8 mm. Luminance of distribution region is 90% or more of a total luminance of light emitted from device. In twenty second regions arranged along sides of distribution region, luminance of one second region is 2% or less of total luminance. In sixteen second regions provided inside twenty second regions, luminance of one second region is 3% or more and 10% or less of total luminance.

A vehicle luminaire may include: an attachment portion which includes a concave portion opening to one end face; a light-emitting module, which includes a substrate and at least one light-emitting element provided on the substrate, provided inside the concave portion; and a plurality of bayonets provided on an outer side surface of the attachment portion. When the attachment portion is viewed from a direction along a center axis of the attachment portion, the bayonets are provided at a predetermined interval. The attachment portion includes an opening portion provided in a region between the plurality of bayonets. An opening dimension of the opening portion is larger than a width dimension of each bayonet.

Vehicle luminaire and vehicle lamp

Growing community of inventors

Yokosuka, Japan

Tomohiro Matsuo