发明名称 |
Photoflash unit with formed insulating sheet |
摘要 |
A photoflash unit comprising a plurality of high voltage type flashlamps mounted on a printed circuit board containing circuitry for sequentially igniting the flashlamps. A plurality of electrically conductive reflectors respectively associated with the flashlamps are disposed between the lamps and the circuit board, with each reflector having an aperture in alignment with a corresponding aperture in the circuit board. Connected in series with each but the last lamp of the array is a radiant-energy-activated disconnect switch comprising a strip of electrically conductive heat-shrinkable polymeric material which is attached at both ends to the circuit board so that the midportion of the strip bridges a respective one of the apertures therein. A sheet of electrically insulating material is interposed between the reflectors and circuit board to prevent shorting therebetween. A plurality of deformations, such as dimples, are formed in the insulating sheet for spacing the sheet from the disconnect switch strips.
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申请公布号 |
US4227240(A) |
申请公布日期 |
1980.10.07 |
申请号 |
US19780972197 |
申请日期 |
1978.12.22 |
申请人 |
GTE PRODUCTS CORPORATION |
发明人 |
SHAFFER, JOHN W.;ARMSTRONG, DONALD E. |
分类号 |
G03B15/04;H05K1/00;(IPC1-7):G03B15/02 |
主分类号 |
G03B15/04 |
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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