Toshiba Lighting & Technology Corporation

Kazuo Shimokawa

Kiyoshi Nishimura

Nobuhiko Betsuda

Miho Watanabe

Hideki Okawa

Takuya Honma

Hirotaka Tanaka

Akihiro Sasaki

Katsuhisa Matsumoto

According to one embodiment, there is provided a light-emitting device including a light-emitting section, a thermal radiation member, and a heat conduction layer. The light-emitting section includes a mounting substrate section and a light-emitting element section. The mounting substrate section includes a substrate, a first metal layer, and a second metal layer. The substrate includes a first principal plane including a mounting region and a second principal plane. The first metal layer includes mounting patterns provided in the mounting region. The light-emitting element section includes semiconductor light-emitting elements and a wavelength conversion layer. The semiconductor light-emitting elements are connected to the mounting patterns. The luminous existence of the light-emitting element section is equal to or higher than 10 lm/mmand equal to or lower than 100 lm/mm. The thermal radiation member has an area equal to or larger than five times the area of the mounting region.

Light emitting device and luminaire

Growing community of inventors

Yokosuka, Japan

Kazuo Shimokawa