发明名称 |
DIRECT CURRENT LIGHTING METAL HALIDE DISCHARGE LAMP, DIRECT CURRENT LIGHTING METAL HALIDE DISCHARGE LAMP LIGHTING DEVICE, AND LIGHTING SYSTEM |
摘要 |
PROBLEM TO BE SOLVED: To provide electrical characteristics and light emitting characteristic which are nearly equal to those of a mercury sealed type metal halide discharge lamp, without substantially using mercury having a large environmental load and the magnitude of an anode can be restrained. SOLUTION: This direct current lighting metal halide discharge lamp is provided with a positive electrode 11 and a negative electrode 12 sealed in an airtight container, a discharge medium sealed in the airtight container while including a first halogenide, a second halogenide and the rate gas, as the first halogenide compound, one or plural kinds of halogenide selected among a group of sodium, scandium and a rear earth group metal is used. As the second halogenide, one kind or plural kinds of halogenide of a metal having a relatively large steam pressure and hard to emit the light in a visible area in comparison with the meal of the first halogenide is used; and a base 8 electrically connected to the positive electrode and the negative electrode and fitted to the end of a metal halide lamp and arranged in the positive electrode 11 side relatively sealed in the airtight container. This lamp is lighted by the direct current without practically sealing mercury. |
申请公布号 |
JP2000106133(A) |
申请公布日期 |
2000.04.11 |
申请号 |
JP19980277339 |
申请日期 |
1998.09.30 |
申请人 |
TOSHIBA LIGHTING & TECHNOLOGY CORP |
发明人 |
ISHIGAMI TOSHIHIKO;SAIDA ATSUSHI;MATSUDA MIKIO;HIRUTA TOSHIO |
分类号 |
H01J61/20;H01J61/88;H05B41/282;(IPC1-7):H01J61/20 |
主分类号 |
H01J61/20 |
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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