In the river in the sea, in order to prevent the ship ran aground or stranded, must set up a beacon lights flashing signal,led blue beacon light indicating the direction of ship. In high-rise building, television tower, communication tower, the top of the building must be installed aviation obstacle lamp flashing signal, to prevent air vehicle collision and buildings.
Power supply system of the flash past the photovoltaic battery and accumulator, the incandescent lamp as light source. Incandescent lamp has flash,solar power beacon light ， transient pulse current.
In order to meet the instantaneous large current pulse discharge requirements, must use large capacity battery, so the cost is very high. At the same time, often in a state of incandescent lamp light, mini flashing led warning light ，service life is greatly reduced, so the need for frequent replacement, repair costs.
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