Ukuchaphazela ukuNciphisa kwezibane ze-LED
Njengohlobo olutsha lokukhanyisa okuluhlaza, izibane ze-LED zigcina amandla, zihambelana nokusingqongileyo kwaye zihlala ixesha elide, kwaye zihlonishwa kakhulu ngabathengi. Kodwa ingxaki yokubola kwe-LED yenye ingxaki ekufuneka izibane ze-LED zijongane nazo. Ukubola kokukhanya okungaphazamisekiyo kuye kwachaphazela kakhulu ukusetyenziswa kwezibane ze-LED.
Okwangoku, ukubola kokukhanya kwee-LED ezimhlophe kwimarike inokuba yenye yezona zinto ziphambili xa usiya ekukhanyeni kwabantu. Yintoni ebangela ukuthotywa kokukhanya kwee-LEDs? Ngokubanzi, zimbini izinto eziphambili zokuthomalalisa ukukhanya kwee-LEDs:
I. Iingxaki zomgangatho weemveliso ze-LED:
1. I-chip ye-LED eyamkelweyo ayikho kwimpilo enhle, kwaye ukukhanya kubola ngokukhawuleza.
2. Kukho iziphene kwinkqubo yokuvelisa, kwaye ubushushu be-chip ye-LED ayinakuphuma kakuhle kwi-PIN ye-PIN, okukhokelela kubushushu obuphezulu be-LED kunye nokunyuswa kwe-chip.
II. Imiqathango yokusetyenziswa:
1. I-LED iqhutywe ngokuqhubekayo, kwaye ezinye ii-LED ziqhutywa yi-voltage ukuze zibangele ukubola kwe-LED.
2. I-drive yangoku inkulu kuneemeko ezilinganisiweyo zokuqhuba.
Enyanisweni, kukho izizathu ezininzi zokubola kweemveliso ze-LED. Owona mba ubalulekileyo yingxaki yobushushu. Nangona abavelisi abaninzi benganikeli ingqalelo ekhethekileyo kwingxaki yokutshatyalaliswa kobushushu kwiimveliso zesibini, ukusetyenziswa kwexesha elide kwezi mveliso ze-LED zesibini kuya kuhlawula ingqalelo ngakumbi ekugqithiseni ukushisa kunokuba kukho. Iimveliso ze-LED ziphezulu. Ukumelana ne-thermal ye-chip ye-LED ngokwayo, impembelelo yeglue yesilivere, umphumo wokutshatyalaliswa kobushushu be-substrate, kunye ne-colloid kunye nocingo lwegolide nazo zihambelana nokunciphisa ukukhanya.
III. Izinto ezintathu ezichaphazela umgangatho wezibane ze-LED
1. Ukukhetha ukuba zeziphi iintlobo zezibane ezimhlophe ze-LED
Umgangatho wokukhanya okumhlophe kwe-LED yinto ebaluleke kakhulu. Ukunika eminye imizekelo, ikristale efanayo 14mil emhlophe segment chip njengommeli, isibane esimhlophe se-LED sipakishwe ngesiseko esenziwe nge-epoxy resin, iglue emhlophe kunye neglu. Ukukhanya okukodwa kwindawo ye-30 degree kubonisa idatha yayo yokunciphisa izinga lokugcinwa okukhanyayo kwe-70% emva kweeyure eziliwaka.
Ukuba usebenzisa iphakheji yeglue yeKlasi D ephantsi, kwindawo efanayo yokuguga, ukukhanya kwayo okukhanyayo ngeyure eliwaka ngama-45%.
Ukuba usebenzisa iphakheji yeglue yeKlasi C ephantsi, kwindawo efanayo yokuguga, ukukhanya kwayo okukhanyayo ngeyure eliwaka yi-12%.
Ukuba usebenzisa iphakheji yeglue yeKlasi B ephantsi, kwindawo efanayo yokuguga, ukukhanya kwayo okukhanyayo ngeyure nganye yi-3%.
Ukuba usebenzisa iphakheji yeglue yeKlasi ye-A low-decay, kwindawo efanayo yokuguga, ukukhanya kwayo okukhanyayo ngeyure eliwaka yi-6%.
2. Ukuqwalasela ukushisa okusebenzayo kwee-chips ze-LEDs
Ngokutsho kwedatha yokuguga yesibane esisodwa esimhlophe se-LED, ukuba ukukhanya okumhlophe kwe-LED kusebenza kuphela kunye nobushushu be-ambient yi-30 degree, ngoko iqondo lokushisa lesibiyeli xa ukukhanya okumhlophe kwe-LED kusebenza akuyi kuba ngaphezu kwama-45 degrees. Ngeli xesha, ubomi bale LED buya kulunga kakhulu.
Ukuba kukho izibane ezimhlophe ze-LED ezili-100 ezisebenza ngaxeshanye, ikhefu phakathi kwazo yi-11.4mm kuphela, ke ubushushu besibiyeli esijikeleze izibane ezimhlophe ze-LED abunakuba ngaphezu kwama-45 degrees, kodwa ezo zibane ziphakathi kwemfumba yokukhanya ukufikelela kwiqondo lobushushu eliphezulu 65 degrees. Ngeli xesha, iya kuba luvavanyo olunzima kwii-chips ze-LEDs kuba ezo zibane ezimhlophe ze-LED ziqokelelwe embindini ziya kuba nokubola kokukhanya okukhawulezayo, ngelixa izibane ezijikeleze imfumba ziya kuba nokubola kancinci.
Njengoko sisazi, i-LED iyoyika ubushushu. Ukuphakama kweqondo lobushushu, bufutshane ubomi be-LED, ngelixa iqondo lokushisa lisezantsi, ixesha elide lokuphila kwe-LED. Ngoko ke ubushushu obufanelekileyo bokusebenza kwee-LED kufuneka bube phakathi kwe-minus 5 kunye ne-0 degrees. Kodwa oko ngokusisiseko akunakwenzeka xa usebenza.
Ngoko ke, kufuneka siqinise umsebenzi we-thermal kuyilo lwezibane njengoko iqondo lokushisa lisezantsi, ixesha elide lokuphila kwe-LED.
3. Ukuqwalasela iiparitha zombane zee-chips ze-LEDs
Ngokweziphumo zovavanyo, okukhona kusezantsi umsinga wokuqhuba, kokukhona kuncinci ubushushu obukhuphayo kwaye busezantsi ukuqaqamba. Ngokusekelwe kuphando, uyilo lwesekethe yokukhanyisa ukukhanya kwe-LED, ukuqhutyelwa kwezibane ze-LED ngokubanzi kuphela i-5-10mA, kwaye ukuba inani le-lams lingaphezulu kwama-500 okanye ngaphezulu, ngoku ukuqhuba kwayo ngokubanzi yi-10-15mA kuphela. Nangona kunjalo, umqhubi wangoku wesicelo se-LED ngokubanzi yi-15-18mA kuphela, bambalwa abantu abayila okwangoku ngaphezulu kwe-20mA.
Iziphumo zovavanyo zikwabonisa ukuba ngaphantsi kwe-14mA yangoku yomqhubi, kunye nesiciko esinganyangekiyo emoyeni, iqondo lobushushu lomoya ngaphakathi lifikelela kuma-71 degrees, iimveliso ezibolileyo kancinci, ziro light attenuation kwiiyure eziyi-1000, kunye ne-3% kwiiyure ezingama-2000, okuthetha ukuba ukusetyenziswa kwesi sibane esimhlophe se-LED esiphantsi-kubola sifikelele ubuninzi baso kwindawo enjalo kwaye ke enkulu umonakalo kuyo ukuba ngaphezu kobuninzi bayo.
Ngenxa yokuba ipleyiti yokuguga ayinayo umsebenzi wokutshatyalaliswa kobushushu, ngoko ke ubushushu obuveliswa yi-LED xa isebenza ngokusisiseko abudluliselwa ngaphandle, ngakumbi imifuniselo yangqina le ngongoma. Ubushushu bomoya ngaphakathi kweplate yokuguga bufikelele kubushushu obuphezulu be-degrees ze-101, ngelixa ubushushu bomphezulu besiciko kwi-plate yokuguga bungama-degrees angama-53 kuphela, umahluko wamashumi amashumi amadigri. Oku kubonisa ukuba isiciko seplastiki esenziwe ngokusisiseko asinawo umsebenzi wokupholisa thermal. Nangona kunjalo, ekuyilweni kwezibane eziqhelekileyo, kufuneka kuthathelwe ingqalelo umsebenzi wokuqhuba ukushisa kunye nokutshatyalaliswa kobushushu.
Ngoko ke, isishwankathelo, uyilo lweparameters zombane ezisebenzayo ze-chips ze-LED kufuneka zisekelwe kwimeko yangempela. Ukuba umsebenzi wokuqhuba ubushushu besibane ulungile kakhulu, akukhathaliseki ukuba ukuqhutywa kwesibane se-LED kwanda kancinci, kuba ubushushu obuveliswa sisibane se-LED bunokuthunyelwa ngaphandle, engonakalisi isibane se-LED. . Ngokuchasene noko, ukuba umsebenzi wokupholisa isibane we-thermal u-sloppy, kungcono ukuyila isekethe ukuba ibe yincinci kwaye ivumele ukukhulula ubushushu obuncinci.
