2.Qhov yuav tsum tau ua kom sov dissipation
Cov ntaub ntawv tseem ceeb qhia tau hais tias thaum qhov kub thiab txias tshaj li ib qho nqi, qhov tsis ua hauj lwm tus nqi ntawm cov cuab yeej yuav nce exponentially, thiab txhua txhua 2 ° C nce nyob rau hauv tiv thaiv kub yuav txo qhov kev cia siab ntawm 10%. Txhawm rau kom ntseeg tau tias lub neej ntawm lub cuab yeej, pn junction kub feem ntau yuav tsum tau qis dua 110 ° C. Raws li qhov kub ntawm pn hlws ris nce, lub teeb-emitting wavelength ntawm cov khoom siv dawb LED yuav hloov xim liab. Ntawm 100 ° C. Lub wavelength tuaj yeem hloov tau los ntawm 4 mus rau 9 nm liab, uas ua rau qhov nqus ntawm phosphor txo qis, tag nrho cov luminous siv yuav txo, thiab lub teeb dawb chromaticity yuav phem dua. Nyob ib ncig ntawm chav tsev kub, qhov luminous siv ntawm LED yuav txo li 1% ib liter ntawm kub. Thaum ntau lub LEDs tau teem rau hauv qhov ceev los tsim lub teeb pom kev zoo, qhov teeb meem ntawm cov cua sov dissipation yog qhov hnyav dua, yog li kev daws teeb meem ntawm cov cua sov dissipation tau dhau los ua qhov yuav tsum tau ua ua ntej rau kev siv hluav taws xob LED. Yog tias cov cua sov tsim los ntawm qhov tam sim no tsis tuaj yeem dissipated nyob rau hauv lub sij hawm thiab qhov kub ntawm qhov sib txuas ntawm pn junction yog khaws cia nyob rau hauv qhov kev tso cai, nws yuav tsis muaj peev xwm kom tau txais lub teeb pom kev ruaj khov thiab tuav lub teeb lub neej ib txwm muaj.
LED ntim yuav tsum tau: Yuav kom daws tau qhov teeb meem kub dissipation ntawm high-power LED ntim, designers thiab manufacturers ntawm domestic thiab txawv teb chaws pab kiag li lawm tau optimized lub thermal system ntawm lub ntaus ntawv nyob rau hauv cov nqe lus ntawm cov qauv thiab cov ntaub ntawv.
(1) Cov qauv pob. Yuav kom daws tau qhov teeb meem kub dissipation ntawm high-power LED ntim, ntau yam qauv tau tsim thoob ntiaj teb, feem ntau suav nrog silicon-based flip-chip (FCLED) qauv, hlau Circuit Court board-based qauv, thiab micro-tswj qauv; Tom qab cov txheej txheem pob tau txiav txim siab, cov thermal kuj ntawm lub kaw lus raug txo kom tsawg los ntawm kev xaiv cov khoom sib txawv los txhim kho cov thermal conductivity ntawm lub system.