| 发明名称 | Light-emitting device and lighting apparatus | ||
| 摘要 | A light-emitting device includes a substrate, and a plurality of light-emitting elements mounted on the substrate. The light-emitting elements are placed to meet conditions that the number B of light-emitting elements per unit area (cm2) of a mounting part is not less than 0.4 and a mean mounting density D is not less than 58 to not greater than 334, when a relationship of formula “D=A×B” is established, assuming D as a mean mounting density of light-emitting elements on a substrate, A as a current (mA) flowing through one light-emitting element, and B as the number of light-emitting elements per unit area (cm2) of a substantial mounting part for light-emitting elements. | ||
| 申请公布号 | US8770795(B2) | 申请公布日期 | 2014.07.08 |
| 申请号 | US201113236672 | 申请日期 | 2011.09.20 |
| 申请人 | Toshiba Lighting & Technology Corporation | 发明人 | Uemura Kozo;Shibusawa Soichi;Matsuda Shuhei;Betsuda Nobuhiko;Nishimura Kiyoshi;Kumagai Masatoshi |
| 分类号 | F21V21/00 | 主分类号 | F21V21/00 |
| 代理机构 | DLA Piper LLP (US) | 代理人 | DLA Piper LLP (US) |
| 主权项 | 1. A light-emitting device comprising: a substrate; and a plurality of light-emitting elements mounted on the substrate, wherein the light-emitting elements are configured to be placed to meet conditions that the number B of light-emitting elements per unit area (cm2) of a mounting part is not less than 0.4 and a mean mounting density D is not less than 58 to not greater than 334, when the relationship of formula “D=A×B” is established, assuming D as a mean mounting density of light-emitting elements on a substrate, A as a current (mA) flowing through one light-emitting element, and B as the number of light-emitting elements per unit area (cm2) of a substantial mounting part for light-emitting elements. | ||
| 地址 | Kanagawa JP | ||