Impilo yezinto zikagesi
Kunzima ukukhombisa inani langempela lokuphila ledivayisi ethile ngaphambi kokuthi yehluleke, nokho, ngemva kokuchazwa kwesilinganiso sokuhluleka kweqoqo lemikhiqizo ye-elekthronikhi, izici eziningi zempilo ezibonisa ukwethembeka kwayo zingatholakala, njengesilinganiso sempilo. , impilo ethembekile, impilo yesici sempilo emaphakathi, njll.
(1) Isilinganiso sempilo μ: ibhekisela ekuphileni okumaphakathi kweqoqo lemikhiqizo yedivayisi ye-elekthronikhi.
(2) Impilo enokwethenjelwa T: ibhekisela esikhathini somsebenzi lapho ukwethembeka kuka-R (t) kweqoqo lemikhiqizo yedivayisi ye-elekthronikhi kwehlela ku-y.
(3) Impilo yeMedian: ibhekisela empilweni yomkhiqizo lapho ukwethembeka kuka-R (t) kuzoba ngu-50%.
(4) Impilo yesici: isho ukwethembeka komkhiqizo u-R (t) owehliselwe ku
Ihora elingu-1/e lokuphila.
4.2, impilo ye-LED
Uma ungacabangi ukwehluleka kokunikezwa kwamandla kanye nokushayela, impilo ye-LED ibonakala ekuboleni kwayo kokukhanya, okungukuthi, njengoba isikhathi siqhubeka, ukukhanya kuba mnyama futhi kumnyama kuze kube yilapho ekugcineni kucinywa. Imvamisa ichazwa ukuthi ibole ngamaphesenti angama-30 njengempilo yayo.
4.2.1 Ukubola Kokukhanya Kwe-LED
I-LED eningi emhlophe itholakala ku-phosphor ephuzi ikhanyiswa yi-LED eluhlaza okwesibhakabhaka. Kunezizathu ezimbili eziyinhlokoUkukhanya kwe-LEDukubola, okunye ukubola kokukhanya kwe-LED eluhlaza okwesibhakabhaka ngokwayo, ukubola kokukhanya kwe-LED eluhlaza okwesibhakabhaka kuyashesha kakhulu kune-LED ebomvu, ephuzi, eluhlaza. Okunye ukubola okukhanyayo kwe-phosphors, futhi ukuncishiswa kwe-phosphors emazingeni okushisa aphezulu kubi kakhulu.
Izinhlobo ezahlukahlukene ze-LED ukubola kwayo kokukhanya kuhlukile. NgokuvamileAbakhiqizi be-LEDinganikeza ijika elijwayelekile lokubola kokukhanya. Isibonelo, ijika lokubola kokukhanya kwe-Cree e-United States liboniswa kuMfanekiso 1.
Njengoba kubonakala esithombeni, ukubola kokukhanya kwe-LED kungu-100
Futhi izinga lokushisa layo lokuhlangana, lokho okubizwa ngokuthi izinga lokushisa lokuhlangana liwuhhafu wama-90
Izinga lokushisa lokuhlangana kwe-PN ye-conductor, liphakama izinga lokushisa lenhlukanandlela ngaphambi kwalokho
Kukhona ukubola kokukhanya, okungukuthi, ukuphila kufushane. Kusukela kumfanekiso wama-80
Njengoba kungase kubonakale, uma izinga lokushisa lokuhlangana lingamadigri ayi-105, ukukhanya kwehla kufinyelele ku-70% wempilo yezinkulungwane eziyishumi kuphela ze-70 Junction Tenpeature (C) 105 185 175 55 45
Amahora, kukhona amahora angama-20,000 ku-95 degrees, kanye nezinga lokushisa lokuhlangana
Yehliswe yaba ngama-degree angama-75, isikhathi sokuphila amahora angama-50,000, angama-50
Umfanekiso 1. Ijika elibolile elikhanyayo le-Cree's LELED
Lapho izinga lokushisa lokuhlangana likhuphuka lisuka ku-115 ° C liye ku-135 ° C, impilo iyancishiswa isuka emahoreni angama-50 000 iye emahoreni angama-20,000. Amajika okubola kwezinye izinkampani kufanele atholakale efekthri yokuqala.
O4.2.2 Ukhiye wokwelula impilo: ukunciphisa izinga lokushisa lokuhlangana kwayo
Isihluthulelo sokunciphisa izinga lokushisa le-junction ukuthi ube nesinki esihle sokushisa. Ukushisa okukhiqizwa yi-LED kungakhululwa ngesikhathi.
Ngokuvamile i-LED ihlanganiswe ne-aluminium substrate, futhi i-aluminium substrate ifakwe ku-exchanger ukushisa, uma ungakwazi kuphela ukukala izinga lokushisa kwegobolondo lokushintshanisa ukushisa, khona-ke kufanele wazi inani lokumelana okuningi okushisayo ukuze ubale ukuhlangana. izinga lokushisa. Kubandakanya i-Rjc (indawo yokuhlangana nezindlu), i-Rcm (indlu eya ku-aluminium substrate, empeleni, okufanele futhi ihlanganise ukumelana nokushisa kwenguqulo ephrintiwe yefilimu), ama-Rms (i-aluminium substrate ku-radiator), i-Rsa (i-radiator emoyeni), okuyinto inqobo nje uma kunokunemba kwedatha kuzothinta ukunemba kokuhlolwa.
Umfanekiso wesi-3 ubonisa umdwebo wohlelo lokumelana nokushisa ngakunye kusuka ku-LED kuya kurediyetha, lapho kuhlanganiswe ukumelana nokushisa okuningi, okwenza ukunemba kwayo kulinganiselwe. Okusho ukuthi, ukunemba kokubheka izinga lokushisa lokuhlangana kusuka kuzinga lokushisa elilinganiselwe le-sink yokushisa kubi nakakhulu.
I-coefficient yezinga lokushisa le-volt-ampere yezimpawu ze-O LED
O Siyazi ukuthi i-LED iyi-semiconductor diode, efana nawo wonke ama-diode
Inesici se-volt-ampere, esinesici sokushisa. Isici sayo siwukuthi lapho izinga lokushisa likhuphuka, isici se-volt-ampere sishintshela kwesokunxele. Umfanekiso wesi-4 ubonisa izici zokushisa zezici ze-volt-ampere ze-LED.
Uma sicabanga ukuthi i-LED ihlinzekwa nge-lo yamanje engaguquki, i-voltage iyi-V1 lapho izinga lokushisa lokuhlangana kuyi-T1, futhi lapho izinga lokushisa lendawo lenyuselwa lifinyelela ku-T2, sonke isici se-volt-ampere sishintshela kwesokunxele, i-lo yamanje ayishintshile, futhi I-voltage iba yi-V2. Le mehluko emibili yamandla kagesi isuswa izinga lokushisa ukuze kutholwe i-coefficient yezinga lokushisa, evezwe nge-mvic. Kuma-silicon diode ajwayelekile le-coefficient yokushisa ingu -2 mvic.
Ungalinganisa kanjani izinga lokushisa le-junction ye-LED?
I-LED ifakwe kusishintshi sokushisa futhi idrayivu yamanje eqhubekayo isetshenziswa njengomthombo wamandla. Ngesikhathi esifanayo, izintambo ezimbili ezixhunywe ku-LED zikhishwa. Xhuma imitha ye-voltage kokuphumayo (izigxobo ezinhle nezingezinhle ze-LED) ngaphambi kokuba ugesi uvule, Bese uvula ukunikezwa kwamandla, kuyilapho i-LED ingakashisi, funda ngokushesha ukufundwa kwe-voltmeter, elingana. enanini le-V1, bese ulinda okungenani ihora elingu-1, ngakho-ke selifinyelele ukulingana okushisayo, bese lilinganisa futhi, i-voltage emikhawulweni yomibili ye-LED ilingana ne-V2. Susa lawa manani amabili ukuze uthole umehluko. Isuse ngo-4mV futhi ungathola izinga lokushisa lokuhlangana. Eqinisweni, i-LED iningi lochungechunge bese ihambisana, akunandaba, umehluko we-voltage wakhiwa uchungechunge oluningi lwe-LED umnikelo ovamile, ngakho-ke ukuhlukanisa umehluko we-voltage ngenombolo yochungechunge lwe-LED ukuze uhlukanise 4mV, ungathola izinga lokushisa lokuhlangana kwayo.
4.3,Isibani se-LEDukuncika empilweni
Impilo ye-LED ingafinyelela amahora ayi-1000000?
Leli izinga eliphezulu kuphela ledatha yethiyori ye-LED, ishiywe kwezinye izimo zemingcele (okungukuthi, izimo ezikahle) ngaphansi kwedatha, kanye ne-LED ekusetshenzisweni kwangempela kwezinto eziningi ezithinta impilo yayo,
kunezici ezine ezilandelayo:
1, ihlu
2, iphakethe
3, ukukhanyisa design
4.3.1. I-chip
Ngesikhathi sokukhiqizwa kwe-LED, impilo ye-LED izothinteka ngokungcoliswa kokunye ukungcola kanye nokungapheleli kwe-crystal lattice. O4.3.2. Ukupakisha
Ukuthi ukupakishwa kwe-post-process ye-LED kunengqondo futhi kungenye yezinto ezibalulekile ezithinta impilo yezibani ze-LED. Njengamanje, izinkampani ezinkulu zomhlaba ezifana ne-cree, i-lumilends, i-nichia nezinye izinga eliphezulu lokupakishwa kwe-LED zinokuvikelwa kwelungelo lobunikazi, lezi zinkampani ngemuva kwenqubo yezidingo zokupakisha zisezingeni eliphezulu, ukuphila kwe-LED ngakho-ke kuqinisekisiwe.
Njengamanje, amabhizinisi amaningi anokulingisa okwengeziwe kwe-LED ngemuva kokupakishwa kwenqubo, okungabonakala ngokubukeka, kepha ukwakheka kwenqubo kanye nekhwalithi yenqubo kubi, okuthinta kakhulu impilo ye-LED;
Umklamo wokukhipha ukushisa
Indlela emfushane yokudlulisa ukushisa, ukunciphisa ukumelana nokushisa; Ukwandisa indawo yokuqhuba okuhlangene futhi ukwandise isivinini sokudlulisa ukushisa; Ukubala okunengqondo nokuklama indawo yokukhipha ukushisa; Ukusetshenziswa ngempumelelo komphumela wamandla okushisa.
4.3.3. Umklamo we-Luminaire
Ukuthi umklamo wokukhanyisa unengqondo futhi kuyindaba eyinhloko ethinta impilo yezibani ze-LED. Idizayini yesibani enengqondo ngaphezu kokuhlangana nezinye izinkomba zesibani, imfuneko eyinhloko ukukhipha ukushisa okukhiqizwa lapho i-LED ikhanyiswa, okungukuthi, ukusebenzisa imikhiqizo yoqobo ye-LED yekhwalithi ephezulu yeCree nezinye izinkampani, esetshenziswa ezibanini ezahlukahlukene. , Ukuphila kwe-LED kungahluka izikhathi eziningana noma ngisho namashumi. Isibonelo, kukhona ukuthengiswa kwezibani zomthombo wokukhanya ezihlanganisiwe emakethe (i-30W eyodwa, i-50W, i-100W), futhi ukuchithwa kokushisa kwale mikhiqizo akusheleli. Ngenxa yalokho, eminye imikhiqizo ekukhanyeni kwezinyanga ezingu-1 kuya kwezingu-3 ekuhlulekeni kokukhanya okungaphezu kuka-50%, eminye imikhiqizo isebenzisa cishe u-0.07W we-tube encane yamandla, ngoba ayikho indlela enengqondo yokukhipha ukushisa, okuholela ekuboleni kokukhanya ngokushesha okukhulu. , futhi ngisho nokukhuthazwa kwenqubomgomo yasemadolobheni, imiphumela yenza amahlaya athile. Le mikhiqizo inokuqukethwe okuphansi kwezobuchwepheshe, izindleko eziphansi nempilo emfushane;
4.4.4. Ukunikezwa kwamandla kagesi
Ukuthi ukunikezwa kwamandla kwesibani kunengqondo. I-LED iyidivayisi yokushayela yamanje, uma ukushintshashintsha kwamandla kukhulu, noma imvamisa yethiphu yamandla iphezulu, izothinta impilo yomthombo wokukhanya we-LED. Ukuphila komthombo wamandla ngokwawo kuncike ikakhulukazi ekutheni idizayini yokunikezwa kwamandla inengqondo yini, futhi ngaphansi kwesisekelo sokuklama kokunikezwa kwamandla okunengqondo, impilo yokunikezwa kwamandla incike empilweni yezingxenye.
Njengamanje, ama-LED asetshenziswa kakhulu ezindaweni ezintathu ezinkulu:
1) Isibonisi: njengezibani zezinkomba, izibani, izibani ezixwayisayo, isikrini sokubonisa, njll.
Ukukhanyisa: i-flashlight, isibani sabasebenzi basezimayini, ukukhanya okuqondisayo, ukukhanya okuyisizayo, njll.
3) Imisebe esebenzayo: njengokuhlaziywa kwezinto eziphilayo, i-phototherapy, ukuphulukiswa okukhanyayo, ukukhanya kwezitshalo, njll.
Imingcele eyinhloko yokukala ukusebenza kwe-photoelectric ye-LED ikhonjiswe kuThebula 1.
| Umsebenzi Wemisebe | I-Performance Display Lighting Function Radiation | ukusatshalaliswa | Imisebe esebenzayo |
|
| Ukukhanya noma ukuqina okukhanyayo kwezakhiwo ze-optical, i-engeli ye-beam nokuqina kokukhanya | izinga lombala, ukuhlanzeka kombala kanye ne-wavelength ekhanyayo eshintshashintshayo (ukuguquguquka okukhanyayo okusebenzayo), ukusebenza kahle kokukhanya (lm/W), amandla okukhanya okumaphakathi, i-engeli ye-beam, ukusatshalaliswa kokuqina kokukhanya, izixhumanisi zemibala, izinga lokushisa lombala, inkomba yombala amandla emisebe asebenzayo, ukukhazimula okusebenzayo, ukusatshalaliswa kokuqina kwemisebe, ubude beza obumaphakathi, ubude beza obuphakeme, umkhawulokudonsa | yamanje, i-unidirectional breakdown voltage, ukuvuza okubuyela emuva I-Photobiosafety retinal blue inani lokuchayeka ekukhanyeni, iso eliseduze nevelu yokuchayeka engozini ye-ultraviolet |
Iyini i-flux ekhanyayo?
Isamba senani elikhishwe umthombo wokukhanya ngesikhathi seyunithi libizwa ngokuthi i-luminous flux, evezwa ngu-Φ
Amayunithi angama-lumens (lm)
1w (ubude begagasi 555 nm) =683lumens
Ukukhanya okukhanyayo kwemithombo ethile yokukhanya evamile:
Izibani zebhayisikili: 3W 30lm
Ukukhanya okumhlophe: 75W 900lm
Isibani se-Fluorescent “TL”D 58W 5200lm
Uhlamvu lokukhanya oludingwa ukukhanya kwe-LED
Izilinganiso ezine eziyisisekelo zokukhanyisa
Kuyini ukukhanya?
Isigameko sokugeleza okukhanyayo endaweni yeyunithi yento ekhanyisiwe ukukhanya.
Kuchazwa ngu-E. ln lux (lx=lm/m2)
Ukukhanya kuzimele ekuqondeni lapho ukugeleza okukhanyayo kwenzeka khona phezulu
Ngokuvamile amazinga okukhanya angaphakathi nangaphandle
Izikhundla ezahlukene elangeni emini
Indlela yokulinganisa ukukhanya? Zikalwa ngani?
1. Umthombo wokukhanya
2. Isikrini esikhanyayo
3. I-Photocell
4. Imisebe yokukhanya (ibonakaliswe kanye)
5. Imisebe yokukhanya (ibonakaliswe kabili)
Amandla akhanyayo: i-photometer yokuthola isiqondiso (njengesithombe)
Ukukhanya: I-illuminometer (isithombe)
Ukukhanya: imitha yokukhanya (isithombe)
5.2, izinga lokushisa lombala nokunikezwa kombala komthombo wokukhanya
I. Ukushisa Kombala
Umzimba omnyama ojwayelekile uyashiswa (njenge-tungsten filament esibanini se-incandescent), futhi umbala womzimba omnyama uqala ukushintsha kancane kancane kubomvu obumnyama - obomvu okhanyayo - osawolintshi - ophuzi - omhlophe - oluhlaza okwesibhakabhaka njengoba izinga lokushisa likhuphuka. Lapho umbala wokukhanya okhishwa umthombo wokukhanya ufana nombala we-blackbody ejwayelekile ezingeni lokushisa elithile, sibiza izinga lokushisa eliphelele le-blackbody ngaleso sikhathi izinga lokushisa lombala lomthombo wokukhanya.
Izinga lokushisa K liyavezwa. Umbala oyisisekelo
Njengoba kuboniswe kuthebula:
Izinga lokushisa lombala umqondo ovamile:
| Izinga lokushisa lombala | photochron | Umthelela womkhathi | I-Tricolor fluorescence |
| Ngaphezu kuka-5000k | Okumhlophe okuluhlaza okwesibhakabhaka | Umuzwa obandayo | Isibani seMercury |
| 3300-5000k abut | Maphakathi eduze nokukhanya kwemvelo | Ayikho imiphumela esobala yengqondo | I-fluorescence yombala waphakade |
| 3300k ngaphansi | Okumhlophe okufudumele nezimbali eziwolintshi | Umuzwa ofudumele | Isibani se-incandescent se-quartz halogen |
Ukunikezwa kombala
Izinga lomthombo wokukhanya embaleni wento ngokwayo libizwa ngokuthi ukuvezwa kombala, okungukuthi, izinga lombala ofana nempilo, umthombo wokukhanya onombala ophezulu onikeza umbala ungcono kumbala, umbala esiwubonayo useduze nombala wemvelo, umthombo wokukhanya onokunikezwa kombala ophansi awukhiqizanga kabusha umbala kabi, futhi ukuchezuka kombala esikubonayo nakho kukhulu, emelelwa inkomba yokunikeza umbala (Ra).
I-International Lighting Committee CIE ibeka inkomba yombala welanga ku-100. inkomba yombala yazo zonke izinhlobo zemithombo yokukhanya iyafana.
Isibonelo, inkomba yombala yesibani se-sodium enengcindezi ephezulu i-Ra=23, futhi inkomba yombala yesibani se-fluorescent ithi Ra=60-90. Uma inkomba yombala isondela ku-100, kuba ngcono ukunikezwa kombala.
Njengoba kukhonjisiwe ngezansi: imiphumela yezinto ezinezinkomba zemibala ehlukene:
Ukunikezwa kombala nokukhanya
Inkomba yokunikeza umbala yomthombo wokukhanya kanye nokukhanya inquma ukucaca okubonakalayo kwendawo ezungezile. Ucwaningo luye lwabonisa ukuthi kukhona ukulingana phakathi kokukhanya kanye nenkomba yokunikeza umbala: ukukhanyisa ihhovisi ngesibani esinenkomba enikeza umbala i-Ra > 90 kungcono kunokukhanyisa ihhovisi ngesibani esinenkomba ephansi yokunikeza umbala (Ra <60) ngokwemibandela yokwaneliseka ngokubukeka kwayo.
Inani ledigri lingancishiswa ngaphezu kwama-25%.
Umthombo wokukhanya onenkomba engcono kakhulu yokunikeza umbala nokusebenza kahle kokukhanya okuphezulu kufanele kukhethwe ngangokunokwenzeka, futhi ukukhanya okufanele kusetshenziswe ukuze kutholwe ukubona okuhle ngezindleko zamandla ezincane.
Umthelela wokubukeka.
Isibonelo isibani sethebula le-winled Rechargeable LED
Lesi sibani esibukhali sifakwe ubuchwepheshe be-USB Type-C ukuze sinikeze umuzwa wokushaja ongenamthungo nosheshayo. Esinye sezici ezivelele zalesi sibani ibhethri layo elinamandla elingu-3600mAh, eliqinisekisa ukukhanya okuhlala isikhathi eside. Ngesikhathi sokusebenza samahora angama-8-16, ungathembela ngokuzethemba kulesi sibani ukuthi sikuphelezele imini yonke nobusuku. Futhi ngenxa yeswishi yokuthinta, ukulungisa ukukhanya ukuze kuhambisane nokuthandayo kulula njengokuswayipha umunwe wakho.Yini ebeka i-LED yethuisibani setafula esishajwayongaphandle komsebenzi wayo we-IP44 ongenamanzi. Isikhathi sokushaja siwumoya ohelezayo, sithatha nje amahora angu-4-6 ukushaja ngokugcwele. Ngokusebenzisa ukunethezeka kwe-USB Type-C, ungakwazi ukushaja lesi sibani kalula ngamadivayisi ahlukahlukene, uqinisekise ukuguquguquka nokusetshenziswa okungenazinkinga. Ngokufaka okungu-110-200V nokuphuma kwe-5V 1A, lesi sibani sisebenza kahle futhi sithembekile.
| Igama Lomkhiqizo: | Isibani setafula lokudlela |
| Okubalulekile: | Insimbi+Aluminium |
| Ukusetshenziswa: | cordless rechargeable |
| Umthombo wokukhanya: | 3W |
| Shintsha: | Ukuthinta okufiphele |
| Ibhethri: | 3600MAH(2*1800) |
| Umbala: | Mnyama,Mhlophe |
| Isitayela: | yesimanje |
| Isikhathi sokusebenza: | 8-16 amahora |
| Ingangeni manzi: | IP44 |
Izici:
isibani Usayizi: 100 * 380MM
Ibhethri: 3600mAh
2700K 3W
IP44
Isikhathi sokushaja :4-6 amahora
Isikhathi sokusebenza: amahora angama-8-16
Shintsha: thinta shintsha
I-lnput 110-200V kanye nokukhishwa kwe-5V 1A
