Ama-LED anokusetshenziswa okuningi ezimpilweni zethu. Zihlala isikhathi eside futhi ziyasebenza. Manje, sibona lawa ma-LED cishe kuzo zonke izici zokuphila. Siphinde sihlukanise ama-LED abe yizinhlobo ezimbili. Lezi yi-COB ne-SMD. I-COB imele "Chip on Board". Futhi i-SMD imele “Idivayisi Ekhwezwa Nge-Surface.”
Esihlokweni esingezansi, sizoxoxa ngazo zombili. Sizogqamisa ukuthi womabili la ma-LED asebenza kanjani. Sizophinde sixoxe ngezici zabo kanye nokukhiqiza. Sizoqhathanisa imisebenzi yabo.
Iyini i-COB LED?
Ingenye yentuthuko entsha emkhakheni wama-LED. Inezinzuzo eziningi kunezinye izinhlobo zama-LED.
Kunephethini ethile yama-chips e-LED adingekayo ukuze kudalwe izibani ze-COB. Lawa ma-chips ahlanganiswe eduze. Ngaphezu kwalokho, inesisekelo esenziwe nge-silicon carbide. Ngakho-ke, sine-chip ye-LED enokukhanya okuhle kakhulu, okuyiyunifomu. Lesi sici siyenza iphelele kubenzi bamafilimu. Kuwusizo futhi kubathwebuli bezithombe.
Ama-COB chips asebenzisa ama-diode ayisishiyagalolunye noma ngaphezulu. Oxhumana nabo kanye nesifunda akuxhomekile enanini lama-diode. Eqinisweni, bahlala benesifunda esisodwa kanye noxhumana nabo ababili. Ingakwazi ukukhiqiza ukukhanya okukhanyayo uma ama-chips amakhulu efika ku-250 ukhanyisa. Ngakho-ke, iphinde inikeze iphaneli isici ngenxa yokuklama kwesifunda sayo. Lokhu akulona usizo ezibanini ezishintsha umbala. Kungenxa yokuthi le LED isebenzisa isekethe eyodwa kuphela.
Ukuqonda Okuyisisekelo Kobuchwepheshe be-COB:
Yiqiniso, izibani zangempela zizoba ingxenye eyinhloko yesistimu yokukhanyisa i-COB LED. I-"Chip On Board" (COB) ikhombisa umqondo wokuthi yonke iyunithi iqukethe ama-chips amaningi e-LED. Lawa ma-chips ahambisana namanye endaweni eyenziwe nge-ceramics noma insimbi. Ama-LED angama-semiconductors akhipha ama-photon alula.
Kube nombono wokuthi inani lekhwalithi nesikhathi sokusebenza kwebhethri kuyizinto eziphambene. Uma ukukhanya kungaphezulu, isikhathi sokusebenza kwebhethri sizoba sifushane. Ubuchwepheshe be-COB bulishintshile leli qiniso. Ama-COB LEDs angakhiqiza amazinga aphezulu okukhanya ane-wattage ephansi.
Iyini i-SMD LED?
I-SMD ibhekisela kumadivayisi afakwe ku-Surface. I-SMD iyindlela yokukhiqiza amasekhethi kagesi. Kule nqubo, amabhodi wesifunda anezingxenye ezifakwe kuwo. Ama-LED ama-SMD mancane kakhulu ngosayizi. Ayinawo amaphini nemikhondo. Isingathwa kangcono ngemishini yokuhlanganisa ezenzakalelayo kunomuntu. Ngenxa yokungabikho kwe-hemispherical epoxy casing, i-SMD LED iphinde inikeze okubanzi angle yokubuka.
Ama-LED ama-SMD angakhiqiza ukukhanya okukhanyayo okunomthamo omncane wamanzi. Iwuhlobo lwe-LED oluhlanganisa imibala emithathu eyinhloko ku-encapsulation eyodwa. Isebenzisa inqubo ye-polarization yokuhlanganisa ibhodi lesifunda. Imishini yekhwalithi ephezulu iyadingeka ukuze kuqedwe lolu hlelo. Kuyasiza ukunqoba izinkinga eziningi. Lokhu kufaka phakathi ama-LED angasebenzi.
Ukuqonda Okuyisisekelo Kobuchwepheshe be-SMD:
I-SMD iphinde isebenze kubuchwepheshe be-LED. Ithathe indawo yobuchwepheshe obudala. Eyakudala yayisetshenziswa imikhondo yocingo ngesikhathi sokukhiqiza. Ngobuchwepheshe be-SMD, senza ukukhweza kumishini emincane emincane. Ngakho, ithatha indawo encane. Futhi singasebenzisa kalula lobu buchwepheshe ezintweni zikagesi ezincane.
Singaba nokuhlanganiswa okuzenzakalelayo kwe-PCB sisebenzisa lobu buchwepheshe. Lobu buchwepheshe buthuthukisa ukwethembeka, ukusebenza kahle, nokusebenza kwedivayisi.
Umehluko Obalulekile Phakathi kwe-COB LED kanye ne-SMD LED:
Manje, sizoxoxa ngezici ezithile ezihlukanisa phakathi kwalezi zinhlobo ze-LED. Lezi zici zisisiza kangcono ukunquma ukuthi iyiphi engcono esingayisebenzisa.
| Uhlobo lwe-LED | I-COB LED | I-SMD LED |
| Brightness | Kukhanya kakhudlwana | Ukukhanya kancane |
| Ikhwalithi Yokukhanya | Ukukhanya okungaphezulu | Khomba ukukhanya |
| yombala | Ayikwazi ukushintshwa | Ingashintshwa |
| Cost | Kubiza kancane | Ibiza kakhulu |
| Ukusebenza kwamandla | Kusebenza kahle | Kusebenza kancane |
Amandla Amandla:
Ngokuvamile, izibani ze-COB zisinikeza ukusebenza kahle kwamandla. I-COB LED inezinga eliphezulu lokukhiqiza. Ngakho-ke, kuyisinqumo esihle kakhulu sokukhanyisa izidingo zokusebenza.
Kodwa khumbula ukuthi womabili la ma-LED awonga kakhulu amandla. Zinokusebenza okungcono uma kuqhathaniswa nama-filament bulbs. Futhi yingakho sebeyinketho ethandwa kakhulu kunalawa ma-bulb.
Nge-SMD ne-COB, ukusebenza kahle kwamandla kuncike ku- ukhanyisa esetshenzisiwe. Uma kukhona ama-lumens aphezulu, ukusebenza kahle kwamandla kuba ngcono. Ukusebenza kahle kuphansi kwe-SMD uma kuqhathaniswa ne-COB.
Umbala Nokushisa Kombala:
Isici esilandelayo ohlwini lwethu umbala kanye ukushisa kombala. Mayelana nalokhu, i-SMD ingcono kune-COB. I-SMD isinika uhla olubanzi lwemibala. Izinga lokushisa lombala lilungiseka kakhulu ku-SMD.
Kunemibala emithathu eyinhloko, i-RGB, esetshenziswa ku-SMD. Singabonisa noma yimuphi umbala sisebenzisa le mibala eyinhloko. I-SMD empeleni yenza kube lula ukufeza noma yimuphi umbala. I-SMD LED nayo iyakwazi ukushintsha izinga lokushisa lombala.
Kodwa i-COB LED ayinayo lesi sikhungo. Awukwazi ukushintsha izinga lokushisa nombala. Inomklamo ovumela ukuphuma kombala owodwa kuphela. Kodwa kunesibusiso esifihliwe lapha. Ngenxa yokuphuma kombala owodwa kuphela, usinikeza ukukhanya okuzinzile.
Ikhwalithi Yokukhanya:
Bobabili lobu buchwepheshe buhlukile ngekhwalithi yokukhanya. Ngokuyinhloko kungenxa yezici ezihlukene abanazo. I-SMD ne-COB inenani elihlukile lama-diode. Lawa ma-diode athinta ububanzi nokukhanya kokukhanya.
Ngokusebenzisa ubuchwepheshe be-SMD, ukukhanya okukhiqiziwe kunokubenyezela kukho. Lokhu kukhanya kuhle uma sikusebenzisa njengesibani sephoyinti. Kungenxa yokuthi ukukhanya kukhiqize imiphumela yokuhlanganisa imithombo eminingi yokukhanya.
Ngokusebenzisa ubuchwepheshe be-COB, sizoba nokungacwayizi, ngisho nokukhanya. I-COB idala i-beam yokukhanya. Le nsimbi yokukhanya ifana futhi kulula ukuyishintsha. Ingcono ngoba ikhiqiza i-engeli ebanzi i-angle yomugqa. Ngakho-ke, singakuchaza kangcono njengokukhanya okungaphezulu.
Izindleko Zokukhiqiza:
Siyazi ukuthi amadivaysi ahlukahlukene asebenzisa ubuchwepheshe be-COB ne-SMD. Intengo yalezi zisetshenziswa izohluka. Kuya ngezindleko zabasebenzi kanye nezindleko zokukhiqiza.
Ku-SMD, izindleko zokukhiqiza ziphezulu. Isibonelo, siqhathanisa izinqubo zabasebenzi, izinto ezibonakalayo, nezokukhiqiza. Lokhu kuqhathanisa kukhombisa ukuthi i-SMD ibiza kakhulu kune-COB. Kungenxa yokuthi i-SMD iphumela ku-15% wezindleko zezinto ezibonakalayo. Futhi i-COB iphumela ku-10% wezindleko zezinto ezibonakalayo. Kubonisa ukuthi lokhu kokugcina kungakongela cishe u-5%. Kodwa khumbula ukuthi lezi yizibalo ezijwayelekile. Kodwa-ke, kuyiqiniso ukuthi i-SMD iyabiza uma iqhathaniswa ne-COB.
Ukukhanya:
Ubuchwepheshe be-LED bukhiqiza izibani ezikhanyayo. Lezi zibani zikhethwa namuhla kunama-filament bulbs. Kepha phakathi kwe-COB ne-SMD, ukukhanya kuyehluka. Kuphinde kube ngenxa yomehluko ku- ukhanyisa.
Ku-COB, okungenani sinama-lumens angama-80 ngewathi ngayinye. Futhi ku-SMD, ingaba kusuka ku-50 kuya ku-100 lumens nge-watt ngayinye. Ngakho-ke, izibani ze-COB zikhanya kakhulu futhi zingcono.
Inqubo Yokukhiqiza:
Womabili la ma-LED anehlukile izinqubo zokukhiqiza. Nge-SMD, sisebenzisa i-insulating glue kanye ne-glue conductive. Sisebenzisa lezi glue ukuze sinamathisele ama-chips. Ama-chips alungiswa ku-pad. Ibe isishiselwa ukuze ibambe iqine. Le pad ikhona esibambi sesibani. Ngemva kwalokhu, senza ukuhlolwa kokusebenza. Lokhu kuhlola kuqinisekisa ukuthi konke kuhamba kahle. Ngemuva kokuhlolwa kokusebenza, siyigcoba nge-epoxy resin.
Ku-COB, ama-chips anamathiselwe ngqo ku-PCB. Iphinde ibe nokuhlolwa kokusebenza bese imbozwa nge-epoxy resin.
Isicelo:
I-COB ne-SMD zisinika izinhlobo ezahlukene zezinhlelo zokusebenza. Lezi zibani ze-SMD zingcono ku:
- Izimpawu
- Izindawo zebhizinisi zokukhanyisa
- amakilabhu
- Amabha
- Ithilomu
- Amahhotela
- Izitolo zokuthengisa
Ubuchwepheshe be-COB bunemikhakha ehlukene yezinhlelo zokusebenza. Ngokuvamile, bangasebenzela kangcono imikhakha yezimboni kanye nezinjongo zokuphepha. I-beam ekhiqizwa izibani ze-COB kanye nokukhanya kwazo kuzenza zifanelekele lezi zinhloso. Ngaphambi kokunquma ukuthi yibuphi ubuchwepheshe obulungele wena, kufanele ucabangele zonke izici.
Iyiphi i-LED Esebenza Kakhudlwana?
Izibani ze-LED zingene cishe kuzo zonke izici zokuphila kwethu kwansuku zonke. Ukuze siqonde umehluko phakathi kwe-SMD ne-COB, sithatha izibonelo ezimbili.
Isithombe:
Izibani ze-COB ze-LED zivame kakhulu endabeni yokuthatha izithombe. Manje sesiyazi ukuthi i-COB LED ine-wide angle beam. Ngenxa yalokhu, bakhiqiza ukufana okukhanyayo. Lesi sici sisenza intandokazi yabathwebuli bezithombe nabenzi bamafilimu.
Ukukhanyisa Kwezakhiwo:
Endabeni yokukhanyisa okuvamile, sikhetha ama-SMD LEDs. Isibonelo, kuma-diffused panel lights, kukhona i-frosted diffuser. Ihlanganisa umthombo wokukhanyisa. Ngakho sisebenzisa ama-SMD LEDs.
Nakuba izicelo zokukhanyisa eziyinkimbinkimbi, sikhetha i-COB LED. Endabeni yokukhanyisa kwezakhiwo, sidinga kangcono ama-engeli we-beam. Ngakho sisebenzisa i-COB LED. Ibuye ilungele imicimbi ethokozisayo.
Iyiphi i-LED Ekhanya Kakhudlwana Futhi Engcono?
Izinto ezintathu ezinquma ukuthi iyiphi i-LED engcono. Lokhu okulandelayo:
- Izindleko-ukusebenza
- Ukusebenza kwamandla
- Brightness
Ukusebenza kwezindleko:
Okokuqala, cabanga ukuthi izibani ze-LED zonga kakhulu kunamanye ama-bulb. Ngenxa yokuphila kwabo okude, ukusebenza kahle kwamandla, nokukhanya, badume kakhulu. Futhi uma kukhulunywa ngama-COB nama-SMD LED, owokuqala abiza kakhulu.
Ukusebenza Kwamandla:
Futhi, kuyiqiniso ukuthi izibani ze-LED zonga amandla kakhulu kunanoma yimaphi amanye ama-bulb. Phakathi kwalokhu okubili, lesi sici sincike kuma-lumens asetshenzisiwe. Uma kusetshenziswe ama-lumens aphezulu, kuba namandla kakhulu.
Ukukhanya:
Uma sikhuluma ngezibani, into yokuqala efika engqondweni ukukhanya kwazo. I-COB LED ikhanya kakhudlwana. Kungenxa yokuthi isebenza ku-lumen ephezulu uma kuqhathaniswa ne-SMD LED.
Yiziphi Ukufana Phakathi kwe-COB LED ne-SMD LED?
Sixoxile ngamaphuzu abalulekile ahlukanisayo phakathi kwalezi zindlela ezimbili zobuchwepheshe. Kodwa, yiqiniso, bobabili ubuchwepheshe be-LED. Zinokufana okuningi phakathi kwazo. Ake sihlole lokhu kufana kafushane:
- Ama-chips wobubili lobu buchwepheshe anama-diode amaningi akhona endaweni yawo.
- Ama-chips womabili labu buchwepheshe anoxhumana nabo ababili kanye nesekethe engu-1.
- Yize zihluka ngenani, zombili lezi zikhanya futhi zonga amandla.
- Zombili lezi zisebenzisa ubuchwepheshe be-LED.
- Womabili lawa ma-LED anemiklamo elula nempilo ende.
Isiphetho:
Ngokuphathelene nezibonisi noma izibani, ubuchwepheshe be-LED buphakeme kunobunye. Zingcono ngokuphila isikhathi eside, ukusebenza kahle kwamandla, nokukhanya. Kungakho sincoma ukuthi ukhethe izibani ze-LED kunamanye ama-bulb.
Noma kunjalo, i-COB LED idlula uzakwabo ezicini eziningi ezibalulekile. Kodwa konke kuncike enjongweni oyibheka ngayo i-LED.
Lokhu okuthunyelwe kwabelane ngokuqonda okuyisisekelo kobuchwepheshe be-SMD ne-COB LED. Zihluke ngani komunye nomunye? Ikuphi ukufana i-COB LED ne-SMD LED enakho? Iyiphi elungele ibhizinisi lakho? Ngemva kokufunda lesi sihloko, sithemba ukuthi ungakwazi ukunquma kalula ukuthi ibuphi ubuchwepheshe be-LED obufanelana nawe.
Siyifekthri esebenza ngokukhethekile ekukhiqizeni izinga eliphezulu ngokwezifiso Imichilo ye-LED nezibani ze-neon ze-LED.
Ngiyacela Xhumana nathi uma udinga ukuthenga izibani ze-LED.
