LED teeb lub teeb decay processing txawj
Yuav tsum muaj qee qhov tsis sib xws ntawm cov ntaub ntawv tshawb pom los ntawm ib lub teeb dawb LED ntawm lub rooj tsav tsheb laus thiab cov ntaub ntawv tshawb pom thaum lub teeb dawb LED sib sau ua ke rau hauv lub teeb hnub nyoog.
Qhov loj ntawm qhov sib txawv no nyob ntawm qhov ntsuas hluav taws xob ntawm LED ua haujlwm, tsim lub teeb, thiab ib puag ncig uas siv lub teeb.
Ua ntej ntawm tag nrho cov, yuav ua li cas hom ntawm dawb LED teeb xaiv.
Qhov no tseem ceeb heev. Qhov zoo ntawm LED lub teeb dawb tuaj yeem hais tias yog qhov tseem ceeb heev. Txhawm rau hais qee qhov piv txwv, tib yam yog sawv cev los ntawm Epistar 14mil dawb lub teeb ntu chips, thiab LED dawb lub teeb encapsulated nrog epoxy resin primer, dawb lub teeb kua nplaum thiab ntim kua nplaum, ib lub teeb ci rau ib puag ncig ntawm 30 degrees, ib qho Tom qab. ib txhiab teev, cov ntaub ntawv attenuation yog 70% lub teeb attenuation; Yog tias nws tau ntim nrog D-type low-attenuation kua nplaum, nyob rau hauv tib qhov kev laus ib puag ncig, ib txhiab-teev lub teeb attenuation yog 45%; Yog tias C-hom qis-attenuation kua nplaum tau ntim, nyob rau hauv tib lub sijhawm laus, 1000-teev lub teeb lwj yog 12%; yog hom B uas tsis muaj cov kua nplaum uas muaj cov nplaum nplaum, nyob rau hauv ib puag ncig kev laus, 1000 teev lub teeb lwj yog -3%; Yog tias hom A cov kua nplaum qis qis, nyob rau hauv ib puag ncig kev laus, 1000 teev lub teeb lwj lwj yog -6%.
Vim li cas cov txheej txheem ntim sib txawv ua rau muaj qhov sib txawv loj?
Ib qho ntawm cov laj thawj tseem ceeb yog tias LED nti ntshai tshav kub. Qee lub sij hawm, nws tsis muaj teeb meem yog tias nws tau kub ntau tshaj 100 degrees hauv lub sijhawm luv luv. Kuv ntshai tias qhov kub siab ntev ntev yuav ua rau muaj kev puas tsuaj loj rau LED nti.
Feem ntau hais lus, thermal conductivity ntawm epoxy resin zoo tib yam yog me me heev. Yog li ntawd, thaum lub teeb ci LED teeb, LED nti emits cua sov, thaum cov epoxy resin zoo tib yam muaj kev txwv thermal conductivity. Yog li ntawd, thaum koj hloov los ntawm LED dawb lub teeb Thaum qhov kub ntawm lub LED bracket yog ntsuas los ntawm sab nraud mus rau 45 degrees, cov tub ntxhais kub ntawm lub nti nyob rau hauv lub dawb LED teeb yuav siab tshaj 80 degrees. Qhov kub ntawm lub LED yog tiag tiag 80 degrees. Tom qab ntawd, thaum LED nti ua haujlwm ntawm qhov ntsuas kub-txuag, nws raug tsim txom heev, uas ua rau cov laus ntawm lub teeb dawb LED.
Thaum LED nti ua haujlwm, qhov kub ntawm qhov tseem ceeb ua rau kub siab ntawm 100 degrees, thiab nws tuaj yeem tshem tawm 98% ntawm cov cua sov tam sim ntawd los ntawm cov pins bracket, yog li txo cov cua sov puas rau nws. Yog li ntawd, thaum qhov kub ntawm LED lub teeb lub teeb dawb yog 60 degrees, qhov kub ntawm nws cov nti yuav tsuas yog 61 degrees xwb.
Nws tuaj yeem pom los ntawm cov ntaub ntawv saum toj no uas qhov kev xaiv ntawm ntim tshuab rau cov teeb ci dawb LED ncaj qha txiav txim siab lub teeb tawg ntawm LED teeb.
Qhov thib ob yog qhov tsim ntawm kev ua haujlwm hluav taws xob tsis zoo ntawm LED teeb hlaws.
Raws li cov txiaj ntsig kev sim, qhov txo qis ntawm kev tsav tsheb tam sim no ntawm LED lub teeb dawb, qhov me dua cov cua sov tawm, ntawm chav kawm, qhov qis dua qhov ci. Raws li kev soj ntsuam, kev tsim ntawm LED hnub ci teeb pom kev zoo Circuit Court, kev tsav tsheb tam sim no ntawm LED feem ntau tsuas yog 5-10mA; tus naj npawb ntawm cov hlaws teeb siv hauv cov teeb thiab cov teeb ci muaj cov khoom lag luam ntau, xws li 500 lossis ntau dua, kev tsav tsheb tam sim no feem ntau tsuas yog 10-15mA Txawm li cas los xij, kev tsav tsheb tam sim no ntawm cov npe nrov LED daim ntawv thov teeb pom kev zoo tsuas yog 15-18mA, thiab tsawg tus neeg tsim cov tam sim no siab dua 20mA.
Cov txiaj ntsig kev sim kuj tseem qhia tau tias nyob rau hauv kev tsav tsheb tam sim no ntawm 14mA, thiab lub hau npog yog airtight, thiab huab cua kub hauv qhov nce mus txog 71 degrees, cov khoom tawg uas tsis tshua muaj xoom luminous lwj hauv 1000 teev thiab 3% hauv 2000 teev. Qhov no qhia tau hais tias kev siv lub teeb qis qis LED dawb nyob rau hauv ib puag ncig zoo li no tau mus txog qhov siab tshaj plaws, thiab txawm tias nws loj npaum li cas, nws yuav yog hom kev puas tsuaj.
Vim hais tias lub rooj tsavxwm laus siv rau kev laus tsis muaj cua sov ua haujlwm, cov cua sov tsim tawm thaum lub LED ua haujlwm yog qhov tseem ceeb tsis tuaj yeem ua rau sab nraud. Qhov no yog ua pov thawj sim. Cov huab cua kub hauv lub rooj tsavxwm laus tau mus txog qhov kub ntawm 101 degrees, thiab qhov kub ntawm lub hau npog ntawm lub rooj tsav tsheb laus tsuas yog 53 degrees, qhov sib txawv ntawm kaum tawm degrees. Qhov no qhia tau hais tias lub hau yas tsim los yeej tsis muaj kev ua haujlwm ntawm cov cua sov thiab cov cua kub dissipation. Txawm li cas los xij, nyob rau hauv kev tsim teeb pom kev zoo, kev ua haujlwm ntawm cov hluav taws xob hluav taws xob thiab cov cua sov dissipation yog suav tias yog. Yog li ntawd, nyob rau hauv cov ntsiab lus, tus tsim ntawm kev ua hauj lwm hluav taws xob tsis ua hauj lwm ntawm lub LED teeb hlaws yuav tsum tau raws li nyob rau hauv qhov tseeb qhov teeb meem. Yog hais tias lub tshav kub conduction thiab kub dissipation muaj nuj nqi ntawm lub teeb yog zoo, nws tsis muaj teeb meem yog hais tias tus tsav tam sim no ntawm lub LED dawb lub teeb nce me ntsis, vim hais tias cov LED teeb hlaws dai ua hauj lwm. Cov cua sov tuaj yeem raug xa tawm mus rau sab nraud hauv ib qho tam sim, thiab tsis muaj kev puas tsuaj rau LED, uas yog kev saib xyuas zoo tshaj plaws rau LED. Ntawm qhov tsis sib xws, yog tias qhov kub thiab txias ua haujlwm ntawm lub teeb yog li ntawd, nws yog qhov zoo tshaj plaws los tsim lub voj voog me me kom nws tawm cov cua sov tsawg dua.
Qhov thib peb yog qhov chaw ua haujlwm kub ntawm LED teeb hlaws.
Raws li cov ntaub ntawv kev laus ntawm ib lub teeb dawb LED, yog tias tsuas yog ib lub teeb dawb LED tsuas yog nyob rau thiab ua haujlwm, thiab tib lub sijhawm, qhov kub thiab txias yog 30 degrees, ces qhov kub ntawm lub bracket thaum ib lub teeb dawb LED ua haujlwm. yuav tsis ntau tshaj 45 degrees. Lub sijhawm no, lub neej ntawm LED no yuav zoo tagnrho.
Yog hais tias muaj 100 dawb LED teeb ua haujlwm tib lub sijhawm, thiab lub sijhawm nruab nrab ntawm lawv tsuas yog 11.4 hli, ces qhov kub ntawm lub bracket ntawm lub teeb dawb LED nyob ib ncig ntawm lub teeb teeb yuav tsis tshaj 45 degrees, tab sis nruab nrab ntawm lub teeb. stack Cov LED dawb lub teeb yuav ncav cuag qhov kub ntawm 65 degrees. Lub sijhawm no, LED teeb hlaws yog qhov kev sim. Tom qab ntawd, lub teeb dawb LED sib sau ua ke hauv nruab nrab yuav muaj lub teeb tawg sai dua hauv txoj kev xav, thaum lub teeb dawb LED nyob ib ncig ntawm pawg yuav muaj lub teeb qeeb qeeb. Qhov deb yog qhov tseem ceeb
Tab sis yog tias cov hlaws LED teeb hlaws ntau tshaj 25 hli sib nrug, cov cua sov sib txawv ntawm ib leeg yuav tsis sib sau ntau heev. Nyob rau lub sijhawm no, qhov kub ntawm txhua lub teeb ci LED teeb yuav tsum tsawg dua 50 degrees, uas yog qhov zoo dua rau kev ua haujlwm ntawm LED.
Yog tias qhov chaw ua haujlwm ntawm LED yog nyob rau hauv qhov chaw txias, qhov nruab nrab qhov kub ntawm lub xyoo yuav tsuas yog li 15 degrees, los yog tsawg dua, ces rau lub LED, lub neej yuav ntev dua. Txhim kho lub ncoo thiab lub dab dej kub kom ua kom cov cua sov tuaj.
Los yog, thaum lub LED ua hauj lwm, muaj ib tug me me kiv cua tshuab ntawm ib sab ntawm nws kom dissipate lub tshav kub, uas yog heev pab tau rau lub neej ntawm LED. Tab sis nws tsis yooj yim rau kev khiav lag luam.
Txawm li cas los xij, txhua tus yuav tsum paub tias LEDs tiv taus cua sov. Qhov kub thiab txias dua, lub neej luv ntawm LED, thiab qhov kub thiab txias, lub neej ntawm LED yuav ntev dua. Qhov zoo tshaj plaws ua haujlwm kub ntawm LED yog qhov tseeb ntawm qhov rho tawm 5 thiab xoom degrees. Tab sis qhov no yeej tsis yooj yim sua.
Yog li ntawd, tom qab peb nkag siab txog qhov ua haujlwm zoo tshaj plaws ntawm LED teeb hlaws, peb yuav sim peb qhov zoo tshaj plaws los ntxiv dag zog rau kev ua kom sov thiab ua kom sov dissipation ua haujlwm thaum tsim lub teeb. Txawm li cas los xij, qhov ntsuas kub qis dua, lub neej ntev ntawm LED.
Qhov kub thiab txias ntawm lub teeb kuj tseem ceeb thiab yuav tsum tau muab rau hauv kev txiav txim siab.
