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Introduction to Common Parameters of Street Lights
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Introduction to Common Parameters of Street Lights

Description:Theutilizationcoefficient(U)istheratiooftheluminousfluxdirectlyshiningontheroadsurfacetotheluminousfluxemittedbyalllightsources,whichisrelatedtotheheight,elevationangle,arrangementmethod,roadwidth,etc.ofthestreetlightingfixtures.Luminousflux(Φ)Itisthetotalamountofenergyemittedbyalightsourceandreceivedbythehumaneye.Representstheamountofradiantlightenergyperunittime,measuredinlumenslm.Otherrepresentationmethods:(cdistheunitofluminousintensity:candela.Sristheunitofstereosphericity.).Illuminance(E)istheproportionalcoefficientbetweenluminousfluxandilluminatedarea,measuredinluxlx.1lxreferstotheaveragedistributionof1lmoflightfluxoveranareaof1squaremeter,whichis1m/m2.Theaverageilluminanceontheroadsurface(Eav)istheaverageilluminancemeasuredorcalculatedatpredeterminedpointsontheroadsurfaceinaccordancewithrelevantregulations.Themaintenancecoefficient(k)istheratiooftheaverageilluminanceoraveragebrightnessonaspecifiedsurfaceafteracertainperiodofuseofthelightingdevicetotheaverageilluminanceoraveragebrightnessobtainedonthesamesurfacewhenthedeviceisnewlyinstalledunderthesameconditions.Theinstallationheight(H)ofthelampistheverticaldistancefromthelightcenteroftheantiquelamptotheroadsurface.Theinstallationspacing(S)oflampsisthedistancebetweenadjacentlampsmeasuredalongthecenterlineoftheroad.Theoverhanglength(XL)isthehorizontaldistancefromthelightcenterofthelamptotheadjacentedgestone,thatis,thehorizontaldistancefromthelamptoextendorretracttheedgestone.Theeffectivewidthoftheroadsurface(Weff)isthetheoreticalwidthoftheroadsurfaceusedforLEDstreetlightingdesign,whichisrelatedtotheactualwidthoftheroad,theoverhanginglengthofthelightingfixtures,andthearrangementofthelightingfixturesWhatsApp86+13318250708www.hdxled.com
Description:Theutilizationcoefficient(U)istheratiooftheluminousfluxdirectlyshiningontheroadsurfacetotheluminousfluxemittedbyalllightsources,whichisrelatedtotheheight,elevationangle,arrangementmethod,roadwidth,etc.ofthestreetlightingfixtures.Luminousflux(Φ)Itisthetotalamountofenergyemittedbyalightsourceandreceivedbythehumaneye.Representstheamountofradiantlightenergyperunittime,measuredinlumenslm.Otherrepresentationmethods:(cdistheunitofluminousintensity:candela.Sristheunitofstereosphericity.).Illuminance(E)istheproportionalcoefficientbetweenluminousfluxandilluminatedarea,measuredinluxlx.1lxreferstotheaveragedistributionof1lmoflightfluxoveranareaof1squaremeter,whichis1m/m2.Theaverageilluminanceontheroadsurface(Eav)istheaverageilluminancemeasuredorcalculatedatpredeterminedpointsontheroadsurfaceinaccordancewithrelevantregulations.Themaintenancecoefficient(k)istheratiooftheaverageilluminanceoraveragebrightnessonaspecifiedsurfaceafteracertainperiodofuseofthelightingdevicetotheaverageilluminanceoraveragebrightnessobtainedonthesamesurfacewhenthedeviceisnewlyinstalledunderthesameconditions.Theinstallationheight(H)ofthelampistheverticaldistancefromthelightcenteroftheantiquelamptotheroadsurface.Theinstallationspacing(S)oflampsisthedistancebetweenadjacentlampsmeasuredalongthecenterlineoftheroad.Theoverhanglength(XL)isthehorizontaldistancefromthelightcenterofthelamptotheadjacentedgestone,thatis,thehorizontaldistancefromthelamptoextendorretracttheedgestone.Theeffectivewidthoftheroadsurface(Weff)isthetheoreticalwidthoftheroadsurfaceusedforLEDstreetlightingdesign,whichisrelatedtotheactualwidthoftheroad,theoverhanginglengthofthelightingfixtures,andthearrangementofthelightingfixturesWhatsApp86+13318250708www.hdxled.com
Information

The utilization coefficient (U) is the ratio of the luminous flux directly shining on the road surface to the luminous flux emitted by all light sources, which is related to the height, elevation angle, arrangement method, road width, etc. of the street lighting fixtures.

Luminous flux( Φ) It is the total amount of energy emitted by a light source and received by the human eye. Represents the amount of radiant light energy per unit time, measured in lumens lm. Other representation methods: (cd is the unit of luminous intensity: candela. Sr is the unit of stereosphericity.).

Illuminance (E) is the proportional coefficient between luminous flux and illuminated area, measured in lux lx. 1lx refers to the average distribution of 1lm of light flux over an area of 1 square meter, which is 1m/m2.

The average illuminance on the road surface (Eav) is the average illuminance measured or calculated at predetermined points on the road surface in accordance with relevant regulations.

The maintenance coefficient (k) is the ratio of the average illuminance or average brightness on a specified surface after a certain period of use of the lighting device to the average illuminance or average brightness obtained on the same surface when the device is newly installed under the same conditions.

The installation height (H) of the lamp is the vertical distance from the light center of the antique lamp to the road surface.

The installation spacing (S) of lamps is the distance between adjacent lamps measured along the centerline of the road.

The overhang length (XL) is the horizontal distance from the light center of the lamp to the adjacent edge stone, that is, the horizontal distance from the lamp to extend or retract the edge stone.

The effective width of the road surface (Weff) is the theoretical width of the road surface used for LED street lighting design, which is related to the actual width of the road, the overhanging length of the lighting fixtures, and the arrangement of the lighting fixtures

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Keyword: common the of is road to surface average light lighting

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