发明名称 |
METAL HALIDE LAMP, LIGHTING DEVICE FOR METAL HALIDE LAMP AND HEADLIGHT |
摘要 |
<p>There are provided a mercury-free metal halide lamp which is improved in light flux rising immediately after starting, more practical and suitable for a headlight, and a metal halide lamp lighting device and a headlight using this. The metal halide lamp according to the present invention comprises: a translucent air-tight container having an inner volume which is not greater than 0.1 cc, including an enclosure portion forming an inner space having a flat surface on a bottom surface, and having a ratio D/L satisfying the following expression: 0.25 ‰ D/L ‰ 0.43 where D is a distance between the bottom surface and a top surface of the inner space at a central portion in a tube-axis direction, and L is a length of the enclosure portion; a pair of electrodes sealed facing each other with an inter-electrode distance which is not greater than 5 mm; and a discharging medium containing a plurality of metal halogen compounds selected from a group of Sc, Na, In, Zn and a rare-earth metal and a rare gas but intrinsically not containing mercury (Hg), wherein a lamp power per unit inner surface area of the air-tight container is not smaller than 60 (W/cm 2 ).</p> |
申请公布号 |
EP1763067(A1) |
申请公布日期 |
2007.03.14 |
申请号 |
EP20050765392 |
申请日期 |
2005.06.28 |
申请人 |
HARISON TOSHIBA LIGHTING CORP.;TOSHIBA LIGHTING & TECHNOLOGY CORPORATION |
发明人 |
UEMURA, KOZO;NAKAZATO, KEISUKE;KAWASHIMA, HIROMICHI;SHIRAKAWA, OSAMU;DEGUCHI, MAKOTO;WAJATA, TAKAYUKI |
分类号 |
H01J61/88;F21S8/10 |
主分类号 |
H01J61/88 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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