| 摘要 |
A thin, disposable, extremely bright flashlight is constructed around a thin, planar dry cell battery. The battery, a switch, and miniature incandescent lamps are sealed within a flexible cover of approximately the size of a playing card. The sealed construction removes any danger from electrical sparks in a flammable atmosphere. A window of translucent or transparent material is provided at one end of the package. Two miniature lamps, which may be overdriven to increase their brightness, are located behind this window. The lamps are sufficiently bright that a beam collimation system is unnecessary. Squeezing the package at a designated location closes a dome switch, causing the lamps to light. Releasing pressure on the dome switch opens the circuit so that the light cannot be inadvertently left on.
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