Kabushiki Kaisha Toshiba

Toshiba Lighting & Technology Corporation

Sigeru Osawa

Keiichi Shimizu

Makoto Sakai

Toshiya Tanaka

Kozo Ogawa

Hitoshi Kawano

Takeshi Hisayasu

Takumi Suwa

In a lamp deviceusing a GX53-type capand also using an LEDas a light source, there is regulated an appropriate configuration of a metallic cover. A capand a lighting deviceare arranged on an upper surface side of the metallic cover, and a substrateon which the LEDis mounted is arranged on a lower surface side thereof. The metallic coverhas an approximately cylindrical shape with a maximum outer diameter D of 80 to 150 mm, a height H of 5 to 25 mm, and 2&#x3c0; (D/2) H/W, that is, an area of the outer peripheral surface per gross input power W to the lamp devicebeing in a range of 200 to 800 mm/W. The gross input power W is 5 to 20 W.

Lamp device and lighting fixture including LED as light source and metallic cover

Growing community of inventors

Yokohama, Japan

Sigeru Osawa