Ubomi bezixhobo zombane
Kunzima ukubonisa elona xabiso lichanekileyo lobomi besixhobo esithile sombane ngaphambi kokuba sisilele, nangona kunjalo, emva kokuba isantya sokusilela kwebhetshi yemveliso yesixhobo sombane sichaziwe, inani leempawu zobomi ezibonisa ukuthembeka kwaso kunokufumaneka, njengobomi obuqhelekileyo. , ubomi obuthembekileyo, ubomi obuqhelekileyo beempawu zobomi, njl.
(1) Umndilili wobomi μ: ubhekisa kumndilili wobomi bebhetshi yeemveliso zesixhobo sombane.
(2) Ubomi obuthembekileyo T: bubhekisa kwixesha lomsebenzi ofunyenweyo xa ukuthembeka kwe-R (t) kwebhetshi yeemveliso zesixhobo sombane kwehla ukuya ku-y.
(3) Ubomi beMedi: bubhekisela kubomi bemveliso xa ukuthembeka kwe-R (t) kuya kuba ngama-50%.
(4) Ubomi beempawu: bubhekiselele ekuthembekeni kwemveliso R (t) encitshisiweyo ukuya
I-1 / iyure yobomi.
4.2, ubomi be-LED
Ukuba awuyi kuqwalasela ukungaphumeleli kokunikezelwa kwamandla kunye nokuqhuba, ubomi be-LED bubonakaliswe ekuboleni kokukhanya, oko kukuthi, njengoko ixesha lihamba, ukukhanya kuba mnyama kwaye kube mnyama de ekugqibeleni kucinywe. Ngokuqhelekileyo ichazwa ukubola i-30% yexesha njengobomi bayo.
4.2.1 Ukubola kokukhanya kwe-LED
Uninzi lwe-LED emhlophe lufumaneka kwiphosphor etyheli ekhanyiswe yi-LED eluhlaza. Kukho izizathu ezibini eziphambiliUkukhanya kwe-LEDukubola, enye kukubola okukhanyayo kwe-LED eluhlaza ngokwayo, ukubola kokukhanya kwe-LED eluhlaza okwesibhakabhaka kukhawuleza kakhulu kune-LED ebomvu, etyheli, eluhlaza. Enye kukubola okukhanyayo kwe-phosphors, kwaye ukuthotywa kwe-phosphors kumaqondo okushisa aphezulu kakhulu.
Iimpawu ezahlukeneyo ze-LED ukubola kwayo kokukhanya kwahlukile. NgesiqheloAbavelisi be-LEDinokunika igophe lokubola kokukhanya okusemgangathweni. Umzekelo, ijika elijikayo lokubola kweCree eUnited States libonisiwe kuMfanekiso 1.
Njengoko kunokubonwa kumfanekiso, ukubola kokukhanya kwe-LED yi-100
Kwaye ubushushu bayo bokuhlangana, into ebizwa ngokuba yi-junction ye-junction yisiqingatha se-90
Ubushushu besiphambuka somqhubi we-PN, kokukhona ubushushu bomdibaniso buphezulu ngaphambili
Kukho ukubola kokukhanya, oko kukuthi, ubomi bufutshane. Ukusuka kwiSazobe 80
Njengoko kunokubonwa, ukuba ubushushu besiphambuka buyi-105 degrees, ukukhanya kwehla ukuya kuma-70% obomi beshumi lamawaka kuphela 70 Junction Tenpeature (C) 105 185 175 55 45
Iiyure, kukho iiyure ezingama-20,000 kwi-95 degrees, kunye nobushushu besiphambuka
Ukunciphisa ukuya kuma-degrees angama-75, ubude bokuphila iiyure ezingama-50,000, ezingama-50
Umzobo 1. Igophe lokubola kokukhanya kweCree's LELED
Xa ubushushu be-junction bonyuswa ukusuka kwi-115 ° C ukuya kwi-135 ° C, ubomi buyancipha ukusuka kwiiyure ezingama-50,000 ukuya kwiiyure ezingama-20,000. Iindlela zokubola zezinye iinkampani kufuneka zifumaneke kumzi-mveliso wokuqala.
O4.2.2 Isitshixo ekwandiseni ubomi: ukunciphisa ubushushu besiphambuka sayo
Isitshixo ekunciphiseni ubushushu besiphambuka kukuba ube nesitya esilungileyo sobushushu. Ubushushu obuveliswa yi-LED bunokukhutshwa ngexesha elifanelekileyo.
Ngokuqhelekileyo i-LED idityaniswe kwi-substrate ye-aluminium, kwaye i-aluminium substrate ifakwe kwi-heat exchanger, ukuba unokulinganisa kuphela ubushushu beqokobhe lokutshintsha ubushushu, ngoko kufuneka wazi ixabiso lokuxhathisa kwe-thermal ukubala ukuhlangana. ubushushu. Kubandakanya i-Rjc (i-junction yezindlu), i-Rcm (indlu kwi-aluminium substrate, eneneni, ekufuneka ibandakanye ukuchasana kwe-thermal yefilimu eprintiweyo), i-Rms (i-aluminium substrate kwi-radiator), i-Rsa (i-radiator ukuya emoyeni), leyo okoko kukho ukungachaneki kwedatha kuya kuchaphazela ukuchaneka kovavanyo.
Umzobo wesi-3 ubonisa umzobo wesikimu sokumelana ne-thermal nganye ukusuka kwi-LED ukuya kwi-radiator, apho ukuchasana kwe-thermal kudibeneyo, okwenza ukuchaneka kwayo kuncinci. Oko kukuthi, ukuchaneka kokuphonononga ubushushu bomdibaniso ukusuka kwiqondo lobushushu elilinganisiweyo lobushushu bomphezulu wobushushu bubi ngakumbi.
I-coefficient yobushushu beempawu ze-volt-ampere ze-O LED
O Siyazi ukuba i-LED yi-semiconductor diodes, efana nazo zonke iidiode
Inophawu lwe-volt-ampere, olunophawu lobushushu. Uphawu lwayo kukuba xa izinga lokushisa liphakama, uphawu lwe-volt-ampere lutshintshela ngakwesobunxele. Umzobo we-4 ubonisa iimpawu zokushisa zeempawu ze-LED ze-volt-ampere.
Ukucinga ukuba i-LED ibonelelwa nge-lo yangoku eqhubekayo, i-voltage yi-V1 xa ubushushu be-junction yi-T1, kwaye xa ubushushu be-junction bonyuswa ukuya kwi-T2, yonke into ye-volt-ampere itshintshela ngasekhohlo, i-lo yangoku ayitshintshi, kwaye amandla ombane abe yi-V2. Lo mahluko mbini wombane ususwa bubushushu ukufumana i-coefficient yobushushu, echazwe kwi-mvic. Kwi-silicon diodes eqhelekileyo lo mlinganiso wobushushu ngu-2 mvic.
Indlela yokulinganisa ukushisa kwe-junction ye-LED?
I-LED ifakwe kwi-heat exchanger kwaye i-drive yangoku eqhubekayo isetyenziswa njengombane wombane. Ngexesha elifanayo, iingcingo ezimbini ezixhunyiwe kwi-LED zikhutshwe. Qhagamshela imitha yombane kwimveliso (iipali ezilungileyo nezingalunganga ze-LED) ngaphambi kokuba umbane uvule, Emva koko uvule umbane, ngelixa i-LED ingekatshisi, funda ngoko nangoko ukufundwa kwe-voltmeter, elinganayo. kwixabiso le-V1, kwaye emva koko ulinde iyure enye ubuncinane, ngoko ifikelele kwi-equilibrium ye-thermal, kwaye emva koko ilinganise kwakhona, i-voltage kuzo zombini iziphelo ze-LED ilingana ne-V2. Thabatha la maxabiso mabini ukuze ufumane umahluko. Yisuse nge-4mV kwaye ungafumana ubushushu besiphambuka. Enyanisweni, i-LED ubukhulu becala ininzi yochungechunge kwaye iyahambelana, akukhathaliseki, ngoko ke umahluko wombane wenziwa luluhlu oluninzi lwe-LED igalelo eliqhelekileyo, ngoko ke ukwahlula umahluko wombane ngenani le-LED yolwahlulo. 4mV, ungafumana ubushushu bayo bokuhlangana.
4.3,Isibane se-LEDukuxhomekeka ebomini
Ubomi be-LED bunokufikelela kwiiyure ze-1000000?
Oku kuphela kwinqanaba eliphezulu ledatha yethiyori ye-LED, ishiywe kwiimeko ezithile zomda (oko kukuthi, iimeko ezifanelekileyo) phantsi kwedatha, kunye ne-LED ekusetyenzisweni kwangempela kwezinto ezininzi ezichaphazela ubomi bayo,
kukho ezi zinto zine zilandelayo:
1, itshiphu
2, iphakheji
3, uyilo lokukhanyisa
4.3.1. Itshiphu
Ngexesha lokwenziwa kwe-LED, ubomi be-LED buya kuchaphazeleka kungcoliseko lolunye ukungcola kunye nokungafezeki kwe-crystal lattice. O4.3.2. Ukupakishwa
Ingaba i-post-process package ye-LED inengqiqo nayo enye yezinto ezibalulekileyo ezichaphazela ubomi bezibane ze-LED. Okwangoku, iinkampani ezinkulu zehlabathi ezifana ne-cree, i-lumilends, i-nichia kunye nezinye inqanaba eliphezulu lokupakishwa kwe-LED zinokhuseleko lwe-patent, ezi nkampani emva kwenkqubo yokupakisha inqanaba eliphezulu, ubomi be-LED kwaye ke buqinisekisiwe.
Okwangoku, amashishini amaninzi anokulinganisa ngakumbi kwe-LED emva kokupakishwa kwenkqubo, enokubonwa ngokubonakalayo, kodwa inkqubo yenkqubo kunye nomgangatho wenkqubo ihlwempuzekileyo, echaphazela kakhulu ubomi be-LED;
Uyilo lokutshatyalaliswa kobushushu
Eyona ndlela imfutshane yokudlulisa ubushushu, ukunciphisa ukunyanzeliswa kobushushu; Ukwandisa indawo yokuqhubela phambili kunye nokwandisa isantya sokudlulisa ubushushu; Ukubala okufanelekileyo kunye nokuyila indawo yokulahla ubushushu; Ukusetyenziswa okusebenzayo kwesiphumo somthamo wobushushu.
4.3.3. Uyilo lweLuminaire
Ingaba idizayini yokukhanyisa isengqiqweni nayo ingumba ophambili ochaphazela ubomi bezibane ze-LED. Uyilo lwesibane olunengqiqo ngaphezu kokudibana nezinye izikhombisi zesibane, imfuneko ephambili kukukhipha ubushushu obuveliswayo xa kulayitiwe i-LED, oko kukuthi, ukusebenzisa umgangatho ophezulu weemveliso ze-LED zeCree kunye nezinye iinkampani, ezisetyenziselwa izibane ezahlukeneyo. , Ubomi be-LED bunokwahluka ngamaxesha amaninzi okanye amatyeli amaninzi. Ngokomzekelo, kukho ukuthengiswa kwezibane zokukhanya ezidibeneyo kwimarike (eyodwa i-30W, i-50W, i-100W), kwaye ukutshatyalaliswa kobushushu kwezi mveliso akuhambanga. Ngenxa yoko, ezinye iimveliso ekukhanyeni kweenyanga ezi-1 ukuya kwezi-3 ngokusilela kokukhanya okungaphezulu kwe-50%, ezinye iimveliso zisebenzisa malunga ne-0.07W yetyhubhu yamandla encinci, kuba akukho ndlela ifanelekileyo yokulahla ubushushu, ekhokelela ekuboleni kokukhanya ngokukhawuleza. , kunye nokukhuthazwa komgaqo-nkqubo wedolophu, iziphumo zenza iziqhulo ezithile. Ezi mveliso zinomxholo ophantsi wobugcisa, ixabiso eliphantsi kunye nobomi obufutshane;
4.4.4. Ukunikezwa Amandla
Ingaba ukunikezelwa kwamandla kwesibane kunengqiqo. I-LED sisixhobo sokuqhuba sangoku, ukuba ukuguquguquka kwamandla ngoku kukhulu, okanye ukuphindaphinda kwe-pulse yencam yamandla kuphezulu, kuya kuchaphazela ubomi bomthombo wokukhanya kwe-LED. Ubomi bonikezelo lwamandla ngokwawo buxhomekeke ikakhulu ekubeni uyilo lonikezelo lwamandla lunengqiqo, kwaye phantsi kwesiseko soyilo lombane olufanelekileyo, ubomi bokunikezelwa kwamandla buxhomekeke kubomi bamacandelo.
Okwangoku, ii-LED zisetyenziswa kakhulu kwiindawo ezintathu ezinkulu:
I-1) Bonisa: njengezibane zesalathisi, izibane, izibane zesilumkiso, isikrini sokubonisa, njl.
Ukukhanyisa: i-flashlight, isibane sabasebenzi basezimayini, ukukhanya kweendlela, izibane ezincedisayo, njl.
3) Imitha esebenzayo: njengohlalutyo lwezinto eziphilayo, i-phototherapy, ukunyanga ukukhanya, ukukhanya kwezityalo, njl.
Iiparamitha eziphambili zokulinganisa ukusebenza kwe-photoelectric ye-LED ziboniswe kwiThebhile 1.
| Ukusebenza kwemitha | Umboniso wokuSebenza woMbane woMbane wokuSebenza | ukuhanjiswa | Imitha esebenzayo |
|
| Ukukhanya okanye ukuqina okukhanyayo kweempawu zokukhanya, i-engile ye-beam kunye nokukhanya kokukhanya | umgangatho wombala, ukucoceka kombala kunye ne-wavelength flux ekhanyayo (ukukhanya okukhanyayo okusebenzayo), ukusebenza kakuhle kokukhanya (lm / W), ukukhanya okuphakathi, i-angle ye-beam, ukukhanya kokukhanya, ulungelelwaniso lombala, ubushushu bombala, isalathisi sombala amandla asebenzayo emitha, ukukhanya okusebenzayo, Ukusasazwa koxinzelelo lwemitha, ubude obuphakathi, i-wavelength encochoyi, i-bandwidth | yangoku, i-unidirectional breakdown voltage, umva ukuvuza kwangoku Photobiosafety retinal blue ixabiso lokuvezwa kokukhanya, iliso likufutshane nexabiso lengozi ye-ultraviolet |
Yintoni flux ekhanyayo?
Isixa esipheleleyo somthombo wokukhanya ngexesha leyunithi ibizwa ngokuba yi-luminous flux, ebonakaliswa ngu-Φ
Iiyunithi zizibane (lm)
I-1w (ubude be-555 nm) = 683lumens
Ukukhanya okukhanyayo kweminye imithombo yokukhanya eqhelekileyo:
Izibane zebhayisekile: 3W 30lm
Ukukhanya okumhlophe: 75W 900lm
Isibane seFluorescent "TL"D 58W 5200lm
Uphawu lokukhanya olufunwa lukhanyiso lwe-LED
Imilinganiselo emine esisiseko yokukhanyisa
Yintoni ukhanyiso?
Isiganeko esikhanyayo esikhanyayo kwindawo yeyunithi yento ekhanyisiweyo kukukhanya.
Ichazwa ngu-E. ln lux (lx=lm/m2)
Ukukhanya kuxhomekeke kwicala apho i-flux ekhanyayo yenzeke kumphezulu
Ngokuqhelekileyo amanqanaba okukhanyisa angaphakathi nangaphandle
Izikhundla ezahlukeneyo elangeni emini emaqanda
Indlela yokulinganisa ukukhanya? Balinganiswa ngantoni?
1. Umthombo wokukhanya
2. Isikrini esibonakalayo
3. Photocell
4. Imitha yokukhanya (ibonakaliswe kanye)
5. Imitha yokukhanya (ibonakaliswe kabini)
Ubunzulu obukhanyayo: isikhokelo sokufumana ifotometer (njengomfanekiso)
Ukukhanya: imitha yokukhanya (umfanekiso)
Ukukhanya: imitha yokukhanya ( umfanekiso)
5.2, ubushushu bombala kunye nonikezelo lombala lomthombo wokukhanya
I. Ubushushu boMbala
Umzimba omnyama oqhelekileyo ufudunyezwa (njenge-tungsten filament kwisibane se-incandescent), kwaye umbala womzimba omnyama uqala ukutshintsha ngokuthe ngcembe kunye nobumnyama obomvu-obomvu obomvu-o-orenji-mthubi-omhlophe-blue njengoko ubushushu buphakama. Xa umbala wokukhanya okhutshwa ngumthombo wokukhanya ufana nombala we-blackbody eqhelekileyo kwiqondo lobushushu elithile, sibiza ubushushu obupheleleyo bomntu omnyama ngelo xesha ubushushu bombala bomthombo wokukhanya.
Iqondo lobushushu K libonakalisiwe. Umbala osisiseko
Njengoko kubonisiwe kwitheyibhile:
Ubushushu bombala ngengqiqo eqhelekileyo:
| Ubushushu bombala | photochron | Impembelelo yeAtmosphere | I-Tricolor fluorescence |
| Ngaphezulu kwe-5000k | Cool bluish emhlophe | Imvakalelo ebandayo | Isibane seMercury |
| 3300-5000k abut | Umbindi kufutshane nokukhanya kwendalo | Akukho ziziphumo ezibonakalayo ezibonakalayo zengqondo | Umbala ongunaphakade we-fluorescence |
| 3300k ngaphantsi kwe | Ubushushu obumhlophe ngeentyatyambo eziorenji | Imvakalelo efudumeleyo | Isibane se-incandescent quartz halogen |
Unikezelo lombala
Iqondo lomthombo wokukhanya kumbala wento ngokwayo ibizwa ngokuba yi-color rendering, oko kukuthi, iqondo lombala ofana nobomi, umthombo wokukhanya onombala ophezulu wokunikezela ungcono kumbala, umbala esiwubonayo usondele kumbala wendalo, umthombo wokukhanya onombala ophantsi wonikezelo ulambatha ekuveliseni umbala, kwaye ukutenxa kombala esikubonayo nako kukhulu, kumelwa sisalathiso sonikezelo lombala (Ra).
I-International Lighting Committee CIE ibeka isalathisi sombala welanga kwi-100. isalathisi sombala wazo zonke iintlobo zemithombo yokukhanya iyafana.
Ngokomzekelo, isalathisi sombala wesibane soxinzelelo oluphezulu lwesodium nguRa = 23, kunye nesalathisi sombala wesibane se-fluorescent nguRa = 60-90. Okukhona isalathiso sombala sisondela kwi-100, kokukhona unikezelo lombala lungcono.
Njengoko kubonisiwe ngezantsi: iziphumo zezinto ezinezalathi zombala ezahlukeneyo:
Unikezelo lombala kunye nokukhanyisa
Isalathisi sombala somthombo wokukhanya kunye nesikhanyiso simisela ukucaca okubonakalayo kokusingqongileyo. Uphononongo lubonise ukuba kukho ukulinganisela phakathi kokukhanyisa kunye nesalathisi sombala: ukukhanyisa iofisi ngesibane esinombala obonisa umbala Ra > 90 ungcono kunokukhanyisa iofisi ngesibane esinombala ophantsi (Ra <60) kwi. imiqathango yokwaneliseka yimbonakalo yayo.
Ixabiso lesidanga lingancitshiswa ngaphezu kwe-25%.
Umthombo wokukhanya onesalathiso sombala obalaseleyo kunye nokusebenza okuphezulu kokukhanya kufuneka kukhethwe kangangoko kunokwenzeka, kwaye ukukhanya okufanelekileyo kufuneka kusetyenziswe ukufumana umbono olungileyo kunye nexabiso elincinci lamandla.
Isiphumo sokubonakala.
Umzekelo isibane setafile esiTshajwayo yiwoled LED
Esi sibane sokusika sixhotyiswe ngetekhnoloji ye-USB Type-C ukubonelela ngamava angenamthungo kunye nokutshaja ngokukhawuleza. Enye yezinto ezibalaseleyo zesi sibane yibhetri ye-3600mAh enamandla, eqinisekisa ukukhanya okuhlala ixesha elide. Ngexesha lokusebenza kwiiyure ze-8-16, unokuthembela ngokuzithemba kwesi sibane ukuba sihambe nawe imini yonke nobusuku. Kwaye ngenxa yokutshintsha kokuchukumisa, ukulungisa ukukhanya ukuze kuhambelane nezinto ozikhethayo kulula njengokuswayipha komnwe wakho. Yintoni ebeka i-LED yethuisibane setafile esitshajekayongaphandle komsebenzi wayo we-IP44 ongenamanzi. Ixesha lokutshaja libethwa ngumoya, lithatha nje iiyure ezi-4-6 ukutshaja ngokupheleleyo. Ukusebenzisa i-USB Type-C elula, unokuhlawulisa esi sibane ngokulula ngezixhobo ezahlukeneyo, uqinisekisa ukuguquguquka kunye nokusetyenziswa okungenangxaki. Ngegalelo le-110-200V kunye nokuphuma kwe-5V 1A, esi sibane sisebenza kakuhle kwaye sithembekile.
| Igama lemveliso: | Isibane setafile yokutyela |
| Izinto: | Metal+Aluminiyam |
| Ukusetyenziswa: | cordless ngokutsha |
| Umthombo wokukhanya: | 3W |
| Tshintshela: | Ukubamba okucimayo |
| Ibhetri: | 3600MAH(2*1800) |
| Umbala: | Mnyama,Mhlophe |
| Isimbo: | mihla |
| Ixesha lokusebenza: | 8-16 iiyure |
| Into evikela amanzi: | IP44 |
Iimbonakalo:
isibane Ubungakanani: 100 * 380MM
Ibhetri: 3600mAh
2700K 3W
IP44
Ixesha lokutshaja :4-6 iiyure
Ixesha lokusebenza: 8-16 iiyure
Tshintshela: tshintsha tshintsha
I-lnput 110-200V kunye nemveliso ye-5V 1A
