LEDstreetlamp(LightEmittingDiode)isasemiconductorlamp.Itisanefficientsolid-statelightsourcebasedonsemiconductorPNjunction,whichcanemitlightwithweakenergy.Underacertainpositivebiasvoltageandinjectioncurrent,theholesinjectedintothePregionandtheelectronsinjectedintotheNregionradiateandrecombinetoemitphotonsafterdiffusingintotheactiveregion,whichdirectlyconvertstheelectricenergyintolightenergy.Itisakindofsolid-statecoldlightsourcewiththecharacteristicsofenvironmentalprotection,pollution-free,lowpowerconsumption,highlightefficiencyandlonglife.Therefore,LEDstreetlampwillbethebestchoiceforroadlightingenergy-savingtransformation. Advantage: 1.ThecharacteristicsofLEDstreetlampitself-unidirectionalityoflight,nodiffuselight,toensuretheefficiencyoflighting. 2.TheLEDstreetlamphasauniquesecondaryopticaldesign,whichilluminatestheLEDstreetlamptotherequiredlightingarea,andfurtherimprovesthelightingefficiencyinordertoachievethepurposeofenergysaving. 3.ThelightsourceefficiencyofLEDhasreached110-130lm/Watpresent,andthereisstillmuchroomfordevelopment.Thetheoreticalvalueis250lm/W.Theluminousefficiencyofhigh-pressuresodiumlampincreaseswiththeincreaseofpower,sotheoveralllightefficiencyofLEDstreetlampisstrongerthanthatofhigh-pressuresodiumlamp.(Thisoveralllightefficiencyistheoretical,infact,thelightefficiencyofhigh-pressuresodiumlampabove250WishigherthanthatofLED.) 4.LEDstreetlamp'scolorrenderingismuchhigherthanthatofhigh-pressuresodiumlamp.Thecolorrenderingindexofhigh-pressuresodiumlampisonlyabout23,whilethecolorrenderingindexofLEDstreetlampisabove75.Consideringfromthevisualpsychology,itachievesthesamebrightness.Onaverage,theilluminationofLEDstreetlampcanbereducedbymorethan20%thanthatofhigh-pressuresodiumlamp(refertoBritishReasonLightingStandard). 5.Lightdecayissmall,lessthan3%inoneyear,anditstillmeetstheroadilluminationrequirementafter10yearsofuse,whilethehigh-pressuresodiumlamphasdeclinedbymorethan30%inoneyearorso.Therefore,thedesignofLEDstreetlampinusepowercanbelowerthanthatofhigh-pressuresodiumlamp. 6.LEDstreetlamphasautomaticcontrolenergy-savingdevice,whichcanreducepowerandsaveelectricityasmuchaspossibleundertheconditionofmeetingthelightingrequirementsofdifferentperiods.SparkIntelligentLEDStreetLampcanrealizecomputerdimming,time-divisioncontrol,lightcontrol,temperaturecontrol,remotecontrol,automaticinspectionandotherhumanizedfunctions. 7.LEDisalow-voltagedevice.ThevoltagedrivingasingleLEDisasafevoltage.Thepowerofaseriesofproductsis1watt.Therefore,itisasaferpowersupplythanusingahigh-voltagepowersupply.Itisespeciallysuitableforpublicplaces(e.g.streetlamplighting,factoryandminelighting,automobilelighting,civillighting,etc.). 8.EachLEDchiphasonlyaverysmallsize,soitcanbefabricatedintodevicesofvariousshapes,andissuitableforvariableenvironment. 9.Longlife:Canusemorethan50,000hours,providethreeyearsofqualityassurance.Thedisadvantageisthatthelifeofthepowersupplyisnotguaranteed. 10.Highlightefficiency:Comparedwiththetraditionalhigh-pressuresodiumlamp,itcansavemorethan75%energybyusingchipsover100LM. 11.Easyinstallation:withoutburyingcablesorrectifiers,thelampholderisdirectlyinstalledonthelamppoleorthelampholderisnestedintheoriginallampshell. 12.Excellentheatdissipationcontrol:thetemperatureiscontrolledbelow45degreesinsummer,andpassiveheatdissipationisadopted.Theheatdissipationinsummerisinsufficient. 13.Reliablequality:Allcircuitpowersupplyuseshigh-qualitycomponents,eachLEDhasaseparateovercurrentprotection,noneedtoworryaboutdamage. 14.Uniformlightandcolor:withoutlens,uniformlightandcoloraresacrificedtoimprovebrightness,soastoensuretheuniformityofnon-aperturelightandcolor. 15.LEDdoe