LED teeb kuj tseem hu ua lub teeb cav
& quot; LED lub teeb cav" hais txog kev sib xyaw ua ke ntawm LED pob khoom (cov khoom siv) lossis LED arrays (modules), LED tsav tsheb, thiab lwm yam ci ntsa iab, thermal, mechanical, thiab hluav taws xob Cheebtsam. Cov cuab yeej yuav tsum tau txuas ncaj qha mus rau cov ceg hluav taws xob los ntawm kev sib txuas ua ke uas haum rau lub teeb LED. LED teeb daws teeb meem tsis siv tus qauv teeb tuav.
Lub ntsiab txhais ntawm tej zaum yuav zoo li tag, tab sis nws yog feem ntau ntxias.
Xibfwb Yuhai Mao tau sau cov ntsiab lus tsis txaus ntseeg ntawm LED lub teeb lub cav, uas yog, LED lub teeb qhov chaw + lub zog tsav tam sim no txuas mus rau ntawm cov khoom siv txhuas.
Raws li tus kws tshaj lij ntawm Tuam Tshoj LED Network, xibfwb Mao Yuhai muaj lub koob npe nrov hauv kev lag luam thiab muaj cov npe ntev ntawm cov npe nrov: tus kws tshawb fawb ntawm Cornell University School of Electrical Engineering, tus tswv cuab laus ntawm Lub Tsev Haujlwm Hluav Taws Xob thiab Hluav Taws Xob Hluav Taws Xob, xib fwb ntawm hluav taws xob engineering department ntawm Tsinghua University, Tuam Tshoj Electronics Fellow ntawm lub Society, Senior Member ntawm IEEE, mus ntsib xibfwb ntawm Stanford University, Tus Lwm Thawj Coj ntawm lub koom haum ntawm Xov tooj cua Electronics, Tsinghua University. Lub sijhawm ntawd, muaj ib qho tshiab ntxiv: tus thawj coj ntawm Epheline Optoelectronics.
Puas yog tag nrho LED teeb tseem tuaj yeem hu ua lub teeb cav? Mao Yuhai tau taw qhia, tsis yog. Ib yam li tag nrho lub tsheb tsis tuaj yeem hu ua lub cav, lub cav yog lub zog ntawm lub tsheb, tab sis nws tsis zoo li lub tsheb. Nws yuav tsum tau tig mus rau hauv lub tsheb nrog lub plhaub. Yog vim li cas vim li cas cov khoom xws li lub teeb cav xav tau yog vim tias txhua lub teeb muaj ntau yam tshwm sim. Qee lub teeb tuaj yeem hu ua tej hauj lwm ntawm kos duab.
Siv lub teeb incandescent ua piv txwv, nws tuaj yeem hais tias nws tsuas yog xav tau lub teeb pom kev yooj yim tshaj plaws, feem ntau, taws tswm ciab lossis teeb Christmas me me. Tab sis nws muaj ntau yam duab. Tshwj xeeb tshaj yog siv lead ua teeb yog ntau yam kev kos duab thiab khoom siv tes ua, zoo nkauj heev. Txawm li cas los xij, LED kuj tseem yuav tsum tau ua ke nrog qhov tsis sib xws ntawm qhov chaw tsav tam sim no kom muaj peev xwm ua haujlwm zoo li lub teeb incandescent (nws tuaj yeem ci thaum txuas nrog 220V). Yog tias LED tau tsim rau hauv lub teeb pom kev zoo, nws tuaj yeem tig los ntawm kev sib txuas 220V zoo li lub teeb incandescent (ntawm chav kawm, lub tshuab hluav taws xob uas phim nws yuav tsum tau). Ntawm qhov tod tes, qhov no yuav pab tau rau kev tsim qauv, thiab ntawm qhov tod tes, nws tuaj yeem pab txhawb lub plhaub (thiab radiator) cov phiaj xwm los txhim kho lawv lub peev xwm.
Kev txhais lus ntawm kev teeb meem ntawm LED lub teeb cav
Txhawm rau tsav qhov chaw tam sim no mus rau LED teeb lub rooj tsavxwm, thawj qhov nyuaj yog qhov tsis muaj qhov chaw.
Coj lub teeb lub teeb ua piv txwv: Piv txwv tias qhov hloov pauv ib txwm tsis tu ncua tam sim no tau muab tso rau ntawm LED aluminium substrate, muaj tag nrho ntau dua 30 yam, ntawm cov uas muaj cov inductors loj, transformers thiab loj capacitors. Cov khoom yuav thaiv lub teeb. Lub Cheebtsam ntau, Qhov phem dua qhov kev ntseeg tau. Yog li ntawd, qhov hloov pauv tsis tu ncua tam sim no tsis muaj.
Nyob rau hauv cov ntaub ntawv no, nws muaj peev xwm ua tau los ntawm ib tug linear tas li tam sim no fais fab mov.
Tab sis tib lub sijhawm, Mao Yuhai tau qhia tias kev xaiv cov kab hluav taws xob li niaj zaus tsis tu ncua tam sim no tsis yog lub teeb hluav taws xob ua tau zoo. Txawm hais tias nws daws qhov teeb meem ntawm qhov chaw nyob, lub zog ntawm cov kab hluav taws xob ntws qis, tshwj xeeb tshaj yog thaum lub zog siab, lub zog qis dua, thiab cov cua sov loj.
Txawm hais tias tsis muaj teeb meem qhov twg lub hwj chim muab tso, nws cov cua sov yuav tsum tau dissipated mus rau hauv qhov chaw los ntawm lub radiator, tab sis thaum lub hwj chim mov thiab lub teeb board muab tso ua ke, lub hwj chim noj los ntawm lub hwj chim mov yuav dhau los ua cua sov thiab ncaj qha ntxiv rau. lub teeb board. Yuav ua rau kom cov cua sov uas lub teeb board yuav tsum tau dissipate, uas yuav ua rau kom qhov kub thiab txias ntawm LED thiab txo nws lub neej.
Qhov no kuj ua rau qhov kev nyuaj thib ob ntawm lub teeb cav-kub dissipation.
Siv 10-watt LED teeb ua piv txwv, piv txwv li tias lub zog hluav taws xob yog 85% (qhov siab dua qhov hluav taws xob ntawm cov kab hluav taws xob tsis tu ncua tam sim no, lub zog qis dua), uas yog, lub zog tsav LED yog 8.5 watts, thiab Lub zog noj ntawm lub hwj chim mov nws tus kheej yog 1.5 watts.
Piv txwv tias lub zog luminous ntawm LED yog 30%, uas yog, 70% ntawm lub zog dhau los ua cua sov thiab yuav tsum tau tawm. Tam sim no ntxiv 1.5W ntawm cov khoom siv hluav taws xob, nws dhau los ua 7.8W ntawm lub zog, uas yuav ua rau kom cov cua sov los ntawm 19.2. Kev sib koom ua ke ntawm cov khoom siv hluav taws xob no rau ntawm aluminium substrate yuav ua rau qhov kub thiab txias ntawm LED los ntawm 15.8% (vim tias muaj qhov xoob ntawm lub dab dej kub). Piv txwv tias qhov ntsuas kub ntawm qhov sib txuas ntawm LED yog thawj 85 ° C, qhov kub ntawm qhov hluav taws xob tam sim no yuav nce mus rau 98.4 ° C, uas yuav txo tau lub neej ntawm LED.
Nyob rau hauv cov ntaub ntawv no, tsuas yog ib tug high-power linear tas li qhov tam sim no yog xav tau los ua kom tiav lub teeb lub cav. Nws cov txiaj ntsig yog nyob rau hauv kev ruaj ntseg ntawm lub zog siab thiab lub teeb ua haujlwm. High-efficiency tsav txo cov cua sov tag nrho.
