LED teeb raws li ib hom tshiab ntsuab teeb pom kev zoo, lub zog txuag, kev tiv thaiv ib puag ncig, lub neej ntev, los ntawm feem ntau ntawm cov neeg siv khoom chasing. Tab sis qhov teeb meem ntawm LED lub teeb tsis ua hauj lwm, tab sis kuj yog ib qho teeb pom kev zoo ntawm LED tau ntsej muag rau qhov teeb meem. Kev tsis ua hauj lwm tsis muaj teeb meem, cuam tshuam loj siv cov teeb ci LED.
Rau tam sim no, qhov phenomenon ntawm LED dawb teeb nyob rau hauv kev ua lag luam yuav yog ib qho teeb meem tseem ceeb hauv kev teeb tsa kev ua neej. Dab tsi ua rau lub teeb ci LED tsis ua hauj lwm? Nyob rau hauv dav dav, rau cov teeb liab LED tsis muaj ob lub ntsiab tseem ceeb:
Thawj, LED khoom nws tus kheej Zoo:
1, kev siv LED nti tsis zoo, ci ntsa iab sai dua.
2, cov txheej txheem ntau lawm, LED chip txias tsis yog ib qho kev xa tawm zoo ntawm tus PIN tus pin, uas ua rau cov teeb kub kub hauv siab yog qhov siab dhau nti ntawm kev ua si.
Qhov thib ob, kev siv tej yam kev mob:
1, LED qhov chaw tsav tam sim no, qee qhov LED voltage uas tau tsav los ntawm kev siv cov roj ua kom raug.
2, tus tsav tam sim no yog siab tshaj cov tsav tsheb ciav hlau.
Nyob rau hauv qhov tseeb, ntau yam ua rau LED teeb tsis ua hauj lwm, qhov teeb meem tseem ceeb los yog kub, txawm tias ntau lub tuam txhab nyob rau hauv cov khoom thib ob tsis them tshwj xeeb mloog mus rau qhov teeb meem ntawm tshav kub, tab sis cov kev siv ntev ntawm LED khoom, lub teeb ntawm lub teeb yuav ntau tshaj li qhov teeb meem ntawm tshav kub Ntawm cov khoom siv LED kom siab. LED chip nws tus kheej, lub thermal ua hauj, qhov feem ntawm nyiaj, lub substrate txias ntxim, zoo li colloid thiab kub kab kuj txuas nrog poob ntawm lub teeb.
Peb yam uas cuam tshuam rau qhov zoo ntawm cov roj teeb
Ua ntej, xaiv dab tsi ntawm LED dawb lub teeb.
Qhov no tseem ceeb heev, qhov zoo ntawm LED dawb lub teeb tau hais tias yog qhov tseem ceeb tshaj plaws. Muab qee qhov ua piv txwv, tib lub cim rau 14mil dawb nti raws li tus sawv cev ntawm tus zoo li epoxy rein ua nrog yas yas thiab yas yas thiab yas encapsulated tawm ntawm LED teeb pom kev, ib lub teeb nyob rau hauv 30 degree chaw, Tom qab ib txhiab teev, cov ntaub ntawv khaws cia rau qhov luminous retention rate ntawm 70%; yog tias kev siv D-hom qis dua hnab looj tes, hauv tib qhov chaw laus, txhiab lub sij hawm ntawm lub teeb tsis ua hauj lwm ntawm 45%; yog Chav Kawm Classbook tsis muaj kua qaub, nyob rau tib qhov chaw laus, 1000 tawm teev ntawm lub teeb tsis ua haujlwm ntawm 12%; yog tias hoob kawm B tsis tshua muaj kua qoob loo, hauv tib lub hnub nyoog, ib txhiab lub sij hawm ntawm lub teeb tsis ua haujlwm ntawm 3%; Yog tias cov kua nplaum poob qis, hauv tib qhov chaw laus, txhiab lub sij hawm Lub teeb tsis ua haujlwm ntawm 6%.
Qhov thib ob, cov teeb ci ntsa iab hlaws ua haujlwm kub thiab txias.
Raws li cov ntaub ntawv ntawm ib zaug xwb LED dawb lub teeb aging, LED dawb teeb yog tias tsuas yog ib lub teeb ua hauj lwm, tib lub sij hawm, nws yog nyob rau hauv ambient kub yog 30 degrees, ces, LED tib lub teeb ua hauj lwm thaum lub cua sov tsis tuaj yeem tshaj li 45 degree. Lub sij hawm no, lub neej LED yuav zoo heev.
Yog tias muaj 100 LED lub teeb dawb tib lub sijhawm ua haujlwm, lub caij nyoog nruab nrab ntawm lawv tsuas yog 11.4 hli rooj, ces lub teeb ntawm lub teeb uas nyob ntawm LED dawb lub teeb sov tsis tshaj 45 degrees, tiam sis qhov nruab nrab ntawm lub teeb ntawm cov teeb dawb teeb yuav nce mus txog 65 degrees kub siab. Lub sij hawm no, cov teeb LED teeb yog kev sim. Yog li, sib sau ua ke nyob rau nruab nrab ntawm cov LED dawb teeb, txoj kev xav ntawm lub teeb tsis ua hauj lwm yuav ceev dua, thiab lub teeb nyob ib ncig ntawm LED teeb lub teeb, lub teeb tsis ua hauj lwm yuav qeeb qeeb.
Lawm, peb yuav tsum paub, LED yog ntshai ntawm tshav kub, lub siab dua qhov kub, LED lub neej luv, txo qhov kub, LED lub neej ntev. Qhov zoo ntawm kev ntsuas kub ntawm lub LED yog ntawm chav kawm ntawm rho tawm 5 thiab xoom. Tab sis qhov no yeej ua tsis tau.
Yog li, peb to taub tias LED teeb hlaws zoo tagnrho tsis ua haujlwm, kom deb li deb tau ntawm qhov tsim teeb pom kev zoo, ntxiv dag zog rau thermal, txias ua haujlwm. Xijpeem, qhov qis dua qhov kub, qhov ntev ntawm lub neej LED.
Dua, LED teeb hlaws haujlwm ua hluav taws xob tsis tsim.
Raws li kev sim, LED dawb teeb nyob rau hauv cov tsav tam sim no qis cov ntaub ntawv, lub me cua sov ntawm lub community launch, ntawm chav kawm, lub ci tseem ceeb kuj me. Raws li cov lus nug, LED hnub ci teeb pom kev zoo tsim hluav taws xob, LED tsav tam sim no feem ntau tsuas yog 5-10mA; cov teeb uas siv hauv cov hlaws teeb uas muaj ntau yam khoom, xws li ntau dua 500, lossis ntau dua, tus tsav tam sim no tsuas yog 10-15mA, Hos cov chaw ntawm LED daim ntawv thov teeb tam sim no, tsuas yog 15-18 hli, tsawg cov neeg mus rau tam sim no tsim rau 20mA los yog ntau dua.
Cov kev ntsuam xyuas kuj qhia tau tias nyob rau hauv 14mA tsav tam sim no, thiab, ntxiv rau lub hau yog airtight, cua kub hauv 71 degrees rau qhov chaw, khoom tsawg-yaj, txhiab teev ntawm lub teeb tsis ua hauj lwm yog zero, 2000 teev lub teeb tsis ua hauj lwm ntawm 3%, Uas qhia tau hais tias qhov low-low LED dawb lub teeb nyob rau hauv xws li ib puag ncig tau hu nws siab tshaj plaws, thiab ces yog ib tug loj kev puas tsuaj rau nws.
Vim tias kev laus ntawm cov laus board nrog tsis muaj kev ua kom txias, li ntawd, lub tshav kub generated thaum lub LED no yeej tsis tuaj yeem kis tau mus rau sab nraud. Sim ua qhov tseeb no. Aging phaj hauv huab cua txias tau mus txog qhov siab ntawm 101 degree, laus laus board rau saum npoo ntawm lub hau yog tsuas yog 53 degrees, qhov sib txawv ntawm kaum ntawm degrees. Qhov no qhia tau hais tias tus qauv ntawm lub hnab yas no yeej tsis muaj thermal conductivity. Tab sis qhov dav dav tsim ntawm lub teeb, tab tom noj rau hauv tus account lub thermal kev ua haujlwm ntawm tshav kub. Yog li, cov ntsiab lus, LED teeb hlaws ntawm cov hluav taws xob tsis ntawm tus tsim raws li qhov tseeb qhov teeb meem, yog lub teeb kub conduction muaj nuj nqi zoo heev, LED dawb teeb tsav tam sim no yog tias nws tsis txawv, vim hais tias cov teeb LED hlaws hauj lwm Thaum tshav kub kub yuav xa mus rau sab nraud instantly, tsis muaj kev puas tsuaj rau cov LED, yog qhov zoo tshaj plaws kev kho mob ntawm cov LED. Ntawm qhov tsis sib thooj, yog lub teeb txawb hluav taws xob ua kom zoo li-nws yog qhov zoo tshaj plaws los tsim qhov me me me me, cia nws muab tso rau qee yam kub dua.
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