发明名称 |
Multi-ringed fluorescent lamp and lighting apparatus utilizing same |
摘要 |
A multi-ringed fluorescent lamp includes a multi-ringed bulb, a phosphor layer formed on an inner surface of the bulb, a pair of electrodes and discharge medium with which the bulb is filled. The bulb includes ring bulbs in each of which straight portions and bent portions are placed alternately on a same plane, by bending partially a glass tube having an outside diameter of 12-20 mm into a rectangular shape, so that opposite ends of the tube terminate with the adjacent straight portions. The ring bulbs are placed concentrically on the same plane and connected through a bridge connection portion to form a single discharge path. A gap between adjacent bent portions is larger than a gap between adjacent straight tube portions and has a maximum value of 6-15 mm. The electrodes are provided in opposite ends of the discharge path of the multi-ringed bulb.
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申请公布号 |
US2005253526(A1) |
申请公布日期 |
2005.11.17 |
申请号 |
US20050125180 |
申请日期 |
2005.05.10 |
申请人 |
TOSHIBA LIGHTING & TECHNOLOGY CORPORATION |
发明人 |
SHIBAHARA YUSUKE;YOSHIDA MASAHIKO |
分类号 |
H01J61/32;F21S8/04;H01J61/35;H01J61/72;(IPC1-7):H01J61/35 |
主分类号 |
H01J61/32 |
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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