2014年3月13日星期四

Stars solar warning lights source categories

solar warning lights according to different sources can be divided into three categories , 1. Rotating reflector bulbs , 2 . Xenon strobe tube type , 3.led shiny type . Several sources have advantages and disadvantages :
1 bulb
The filament lamp is a flow ( metal wires ) of the current occurs , using temperature reflected light, using a tungsten filament is wound into a spiral
Linear model , the glass ball injecting inert gas ( alcohol, etc. ) . Injecting a gas generally has the following characteristics substantially bulb .
( 1 ) Use the lamp voltage than the rated voltage is reduced by 10 %, life expectancy increased by 4 times, while reducing power consumption to 85% , luminosity ( brightness ) was reduced by approximately 30%.
( 2 ) Voltage is increased by 10 % and the life will be greatly shortened by 30% , about 16% increase in power consumption , and the brightness increases about 40%. Standard light bulb is about life in general 1,000-1,500 hours.
A light emitting diode (LED)
A light emitting diode (LED) is a PN junction at the injection current of the particular semiconductor light emitting device and a light emitting material with electrical - optical conversion of the developed GaAs, GaP , etc. . Like general semiconductor and life overvoltage or the surrounding temperature , but will not have the same as the bulb , the filament because of volatilization tapers is like, and no mechanical wear parts, so no special structure of the seismic energy impact , vibration and long life . Light-emitting diode (LED) is a standard lifetime of about 20,000-25,000 hours.
3 xenon lamp bulbs
In the relatively short amount of energy into the bulb , and instantly emits high -power xenon lamp light bulb . And continuous light bulb compared to the introduction of a very large need instant energy, emit enormous amount of light ( energy lines ) . Because xenon production ( choice of materials ) and use ( light-emitting low voltage ) has the advantage , this bulb injected gas Xe gas, xenon lamp name of the resulting . Xenon lamp bulbs available seismic fixation methods , so good shock resistance , and the spectrum emitted by the sun and close to work and so on , like a camera flash strobe , so visibility is extremely strong.

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