Kuthinta Ukwehla kwezibani ze-LED
Njengohlobo olusha lokukhanyisa okuluhlaza, izibani ze-LED zonga amandla, zinobungani nemvelo futhi zihlala isikhathi eside, futhi zihlonishwa kakhulu ngamakhasimende. Kodwa inkinga yokubola kwe-LED ingenye inkinga okufanele izibani ze-LED zibhekane nazo. Ukubola kokukhanya okungaphazamiseki kube nomthelela omkhulu ekusetshenzisweni kwezibani ze-LED.
Okwamanje, ukubola kokukhanya kwama-LED amhlophe emakethe kungase kube enye yezinkinga eziyinhloko lapho imasha ekukhanyeni kwabantu. Yini ebangela ukuncishiswa kokukhanya kwama-LED? Ngokuvamile, kunezici ezimbili eziyinhloko zokuncishiswa kokukhanya kwama-LED:
I. Izinkinga zekhwalithi yemikhiqizo ye-LED:
1. I-chip ye-LED eyamukelwe ayikho empilweni enhle, futhi ukukhanya kubola ngokushesha.
2. Kukhona amaphutha enqubweni yokukhiqiza, futhi ukushisa kwe-chip ye-LED akukwazi ukutholakala kahle kuphinikhodi, okuholela ekushiseni okuphezulu ngokweqile kwe-LED chip kanye nokwenyuka kokuncipha kwe-chip.
II. Izimo zokusebenzisa:
1. I-LED iqhutshwa amandla amanje, futhi amanye ama-LED aqhutshwa amandla kagesi ukuze abangele ukubola kwe-LED.
2. Idrayivu yamanje inkulu kunezimo zokushayela ezilinganiselwe.
Eqinisweni, kunezizathu eziningi zokubola kwemikhiqizo ye-LED. Indaba ebucayi kakhulu inkinga yokushisa. Nakuba abakhiqizi abaningi benganaki ngokukhethekile inkinga yokukhishwa kokushisa emikhiqizweni yesibili, ukusetshenziswa kwesikhathi eside kwale mikhiqizo yesibili ye-LED kuzonaka kakhulu ukukhishwa kokushisa kunalokho okukhona. Imikhiqizo ye-LED iphakeme. Ukumelana okushisayo kwe-chip ye-LED ngokwayo, ithonya leglue esiliva, umphumela wokushisa ukushisa kwe-substrate, kanye ne-colloid nentambo yegolide nakho kuhlobene nokuncishiswa kokukhanya.
III. Izinto ezintathu ezithinta ikhwalithi yamalambu e-LED
1. Ukukhetha ukuthi yiziphi izinhlobo zezibani ezimhlophe ze-LED
Ikhwalithi yokukhanya okumhlophe kwe-LED iyisici esibaluleke kakhulu. Ukunikeza izibonelo ezithile, i-crystal 14mil segment chip yengxenye yokukhanya emhlophe efanayo njengommeleli, isibani esimhlophe se-LED sigcwele isisekelo esenziwe nge-epoxy resin, iglue ekhanyayo emhlophe kanye neglue yephakheji. Ukukhanyisa okukodwa endaweni engama-degree angu-30 kubonisa idatha yakhona yokunciphisa izinga lokulungisa elikhanyayo elingu-70% ngemva kwamahora ayinkulungwane.
Uma usebenzisa iphakheji yeglue ye-Class D ebolile ephansi, endaweni efanayo yokuguga, ukuncishiswa kwayo okukhanyayo ngehora eliyinkulungwane kungu-45%.
Uma usebenzisa iphakheji yeglue ye-Class C ebolile ephansi, endaweni efanayo yokuguga, ukuncishiswa kwayo okukhanyayo ngehora eliyinkulungwane kungu-12%.
Uma usebenzisa iphakheji yeglue ye-Class B ebolile ephansi, endaweni efanayo yokuguga, ukuncishiswa kwayo okukhanyayo ngehora eliyinkulungwane kungu-3%.
Uma usebenzisa iphakheji yeglue ye-Class A yokubola okuphansi, endaweni efanayo yokuguga, ukuncishiswa kwayo okukhanyayo ngehora eliyinkulungwane kungu-6%.
2. Uma kucatshangelwa izinga lokushisa lokusebenza kwama-chips e-LED
Ngokusho kwedatha yokuguga yesibani esisodwa esimhlophe se-LED, uma ukukhanya okumhlophe kwe-LED eyodwa kuphela kusebenza futhi izinga lokushisa elizungezile lingu-30 degree, izinga lokushisa lobakaki lapho ukukhanya okumhlophe kwe-LED okukodwa kusebenza ngeke kube ngaphezu kwama-degree angu-45. Ngalesi sikhathi, impilo yale LED izoba yinhle kakhulu.
Uma kukhona izibani ezimhlophe ze-LED eziyi-100 ezisebenza ngesikhathi esifanayo, isikhawu phakathi kwazo singu-11.4mm kuphela, khona-ke izinga lokushisa likabakaki elizungeze izibani ezimhlophe ze-LED lingase lingeqi ama-degree angu-45, kodwa lezo zibani eziphakathi kwenqwaba yokukhanya zingase finyelela izinga lokushisa eliphezulu lama-degree angu-65. Ngalesi sikhathi, kuzoba uvivinyo olunzima lwama-chips we-LEDs ngoba lezo zibani ezimhlophe ze-LED eziqoqwe phakathi nendawo zizoba nokubola kokukhanya okusheshayo, kuyilapho izibani ezizungeze inqwaba zizobola kancane kancane.
Njengoba sazi, i-LED yesaba ukushisa. Uma izinga lokushisa liphakeme, isikhathi sokuphila se-LED siba mfishane, kuyilapho izinga lokushisa liphansi, kwandisa isikhathi sokuphila se-LED. Ngakho-ke izinga lokushisa elilungile lokusebenza lama-LED kufanele libe phakathi kwama-minus 5 no-0 degrees. Kodwa lokho empeleni akunakwenzeka ekusebenzeni.
Ngakho-ke, kufanele siqinise umsebenzi oshisayo ekwakhiweni kwezibani njengoba izinga lokushisa liphansi, isikhathi eside sokuphila kwe-LED.
3. Ukucabangela imingcele kagesi yama-chips e-LED
Ngokusho kwemiphumela yokuhlola, lapho amandla okushayela ephansi, kuba kuncane ukushisa okukhishwayo futhi kuncipha ukukhanya. Ngokusekelwe ocwaningweni, umklamo wesifunda sokukhanyisa ukukhanya kwe-LED, amandla okushayela amalambu e-LED ngokuvamile angu-5-10mA kuphela, futhi uma inani lama-lams lingaphezu kuka-500 noma ngaphezulu, ukushayela kwayo ngokuvamile kuba ngu-10-15mA kuphela. Kodwa-ke, umshayeli wamanje wohlelo lokusebenza lwe-LED olujwayelekile luyi-15-18mA kuphela, bambalwa abantu abaklama yamanje ibe ngaphezu kuka-20mA.
Imiphumela yokuhlolwa iphinde ikhombise ukuthi ngaphansi kwe-14mA yamanje yomshayeli, nesivalo esingangenwa umoya, izinga lokushisa lomoya ngaphakathi lifinyelela ku-71 degrees, imikhiqizo ebolile kancane, i-zero light attenuation emahoreni ayi-1000, kanye no-3% emahoreni angu-2000, okusho ukuthi ukusetshenziswa kwalesi sibani esimhlophe se-LED esibolile kancane sesifinyelele umkhawulo waso endaweni enjalo futhi enkulu kungumonakalo kuso uma singaphezu komkhawulo waso.
Ngenxa yokuthi ipuleti eliguga alinawo umsebenzi wokukhipha ukushisa, ngakho-ke ukushisa okukhiqizwa yi-LED uma kusebenza ngokuyisisekelo akudluliselwa ngaphandle, ikakhulukazi ukuhlolwa kufakazele leli phuzu. Izinga lokushisa lomoya ngaphakathi kwepuleti yokuguga selifinyelele izinga lokushisa eliphakeme lama-degree angu-101, kuyilapho izinga lokushisa elingaphezulu kwesivalo epuleti lokuguga lingama-degree angu-53 kuphela, okuwumehluko wamashumi amaningana amadigri. Lokhu kubonisa ukuthi isivalo sepulasitiki esiklanyelwe ngokuyisisekelo asinawo umsebenzi wokupholisa oshisayo. Kodwa-ke, ekwakhiweni kwezibani ezijwayelekile, kufanele kucatshangelwe umsebenzi wokushisa nokushisa.
Ngakho-ke, ngamafuphi, ukuklama kwemingcele kagesi esebenzayo yama-chips e-LED kufanele kusekelwe esimweni sangempela. Uma umsebenzi wokushisa wesibani uhle kakhulu, akunandaba ukuthi ukushayela kwesibani se-LED kukhuphuke kancane, ngoba ukushisa okukhiqizwa isibani se-LED kungathunyelwa ngaphandle, okungalimazi isibani se-LED. . Ngokuphambene nalokho, uma ukupholisa okushisayo kwesibani kuwubudlabha, kungcono ukuklama isifunda sibe sincane futhi sivumele ukukhulula ukushisa okuncane.
