发明名称 |
Two filament electric bulb traffic light |
摘要 |
A two filament light bulb in a traffic signal generator has a main filament and an auxiliary filament. The light bulb is a two filament halogen light bulb and the traffic light controller includes apparatus for periodically and alternately exchanging the role of main and auxiliary for the two filaments.
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申请公布号 |
US3968395(A) |
申请公布日期 |
1976.07.06 |
申请号 |
US19750563060 |
申请日期 |
1975.03.28 |
申请人 |
SIEMENS AKTIENGESELLSCHAFT |
发明人 |
OBERMAIER, ANTON |
分类号 |
G08G1/095;H01K9/02;(IPC1-7):H01J7/44;B60Q9/00 |
主分类号 |
G08G1/095 |
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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