Igihe cyose tuvugana nabakiriya, ijambo rimwe rivugwa inshuro nyinshi: garanti. Buri mukiriya ashaka igihe cyubwishingizi butandukanye, kuva kumyaka ibiri kugeza kumyaka itatu, kandi bamwe bashaka imyaka itanu.
Ariko mubyukuri, mubihe byinshi, abakiriya ubwabo barashobora kutamenya aho iki gihe cyubwishingizi gikomoka, cyangwa bagakurikira imbaga bakibwira ko LED igomba kwishingirwa igihe kirekire.
Uyu munsi, nzakujyana mwisi ya LED kugirango menye uko ubuzima bwamatara busobanurwa kandi bugacibwa.
Mbere ya byose, iyo bigeze kuri LED, mubireba isura, dushobora kubireba turebye ko bitandukanye nibisanzwe bitanga urumuri, kuko LED hafi ya zose zifite umwihariko -ubushyuhe.
Ubushyuhe butandukanye butandukanye ntabwo ari ubwiza bwamatara ya LED, ahubwo kugirango LED ikore neza.
Noneho abakiriya bazibaza impamvu isoko yumucyo yabanje gukoresha gake imirasire, ariko mugihe cya LED amatara hafi ya yose akoresha imirasire?
Kuberako isoko yumucyo yabanje gushingira kumirasire yumuriro kugirango itange urumuri, nkamatara ya tungsten filament, yishingikiriza kumuriro kugirango itange urumuri, ntabwo rero batinya ubushyuhe. Imiterere shingiro ya LED ni semiconductor PN ihuza. Niba ubushyuhe buri hejuru gato, imikorere yakazi izagabanuka, bityo ubushyuhe bwo gukwirakwiza ni ngombwa cyane kuri LED.
Ubwa mbere, reka turebe ibihimbano nigishushanyo cya LED
Inama: chip ya LED izatanga ubushyuhe mugihe ikora. Twerekeza ku bushyuhe bwimiterere yimbere ya PN nkubushyuhe bwo guhuza (Tj).
Kandi, icy'ingenzi, ubuzima bwamatara ya LED bufitanye isano cyane nubushyuhe bwo guhuza.
Igitekerezo tugomba gusobanukirwa: Iyo tuvuze ubuzima bwa LED, ntibisobanura ko bidakoreshwa rwose, ariko iyo urumuri rwa LED rugeze kuri 70%, muri rusange twibwira ko 'ubuzima bwarwo bwarangiye'.
Nkuko bigaragara kuri iyi shusho yavuzwe haruguru, niba ubushyuhe bwihuza bugenzurwa kuri 105 ° C, noneho itara ryaka ryamatara ya LED rizagera kuri 70% mugihe itara rya LED rikoreshwa mumasaha agera ku 10,000; kandi niba ubushyuhe bwihuza bugenzurwa nka 60 ° C, noneho igihe cyakazi kizaba amasaha 100.000 + isaha, flux flux izagabanuka kugera kuri 70%. Ubuzima bw'itara bwiyongera inshuro 10.
Mubuzima bwa buri munsi, icyo dukunze guhura nacyo nuko ubuzima bwa LED bumara amasaha 50.000, mubyukuri namakuru iyo ubushyuhe bwihuza bugenzurwa kuri 85 ° C.
Ko ubushyuhe bwihuza bugira uruhare runini mubuzima bwamatara ya LED, nigute wagabanya ubushyuhe bwihuriro? Ntugire ikibazo, reka tubanze turebe uko itara rigabanya ubushyuhe. Nyuma yo gusobanukirwa nuburyo bwo gukwirakwiza ubushyuhe, mubisanzwe uzamenya kugabanya ubushyuhe bwihuriro.
Nigute amatara akwirakwiza ubushyuhe?
Ubwa mbere, ugomba kumenya uburyo butatu bwibanze bwo guhererekanya ubushyuhe: gutwara, convection, nimirasire.
Inzira nyamukuru yo gukwirakwiza imirasire ni ukwirakwiza no gukwirakwiza ubushyuhe bwa convection, hamwe no gukwirakwiza ubushyuhe bwimirasire munsi ya convection.
Amahame shingiro yo guhererekanya ubushyuhe:
Imyitwarire: Uburyo ubushyuhe bugenda ku kintu kiva mu gice gishyushye kijya mu gice gikonje.
Nibihe bintu bigira ingaruka ku gutwara ubushyuhe?
Conduct Ubushyuhe bwumuriro bwibikoresho byo gukwirakwiza ubushyuhe
Resistance Kurwanya ubushyuhe biterwa nuburyo bwo gukwirakwiza ubushyuhe
And Imiterere nubunini bwibikoresho byubushyuhe
Imirasire: Ikintu cyibintu byo hejuru cyane byerekana ubushyuhe hanze.
Nibihe bintu bigira ingaruka kumirasire yumuriro?
Resistance Kurwanya ubushyuhe bwibidukikije no hagati (cyane cyane urebye umwuka)
Ibiranga ibikoresho byimirasire yumuriro ubwayo (muri rusange amabara yijimye arasa cyane, ariko mubyukuri ihererekanyabubasha ntabwo ari ingenzi cyane, kuko ubushyuhe bwitara ntiburi hejuru cyane kandi imirasire ntabwo ikomeye cyane)
Umwanzuro: Uburyo bwo guhererekanya ubushyuhe bitemba gaze cyangwa amazi.
Nibihe bintu bigira ingaruka kuri convection?
Flow Gutemba gazi n'umuvuduko
Capacity Ubushobozi bwihariye bwubushyuhe, umuvuduko w umuvuduko nubunini bwamazi
Mu matara ya LED, icyuma gishyushya gifite igice kinini cyigiciro cyitara. Kubwibyo, ukurikije imiterere ya radiatori, niba ibikoresho nigishushanyo bidahagije, noneho itara rizagira ibibazo byinshi nyuma yo kugurisha.
Ariko, mubyukuri, ibi nibishushanyo gusa, kandi ubu nibyo byibandwaho.
Nkumuguzi, nigute ushobora kumenya niba gukwirakwiza itara ari byiza cyangwa atari byiza?
Uburyo bwumwuga cyane birumvikana gukoresha ibikoresho byumwuga kugirango ukore ibipimo byubushyuhe.
Nyamara, ibikoresho nkibi byumwuga birashobora kubuza abantu basanzwe, kubwibyo dusigaranye ni ugukoresha uburyo gakondo bwo gukoraho itara kugirango twumve ubushyuhe.
Noneho havutse ikibazo gishya. Nibyiza kumva ushushe cyangwa udashyushye?
Niba radiator ishyushye iyo uyikoraho, rwose ntabwo ari byiza.
Niba imirasire ishyushye gukoraho, sisitemu yo gukonjesha igomba kuba mbi. Imirasire yaba ifite ubushobozi bwo gukwirakwiza ubushyuhe budahagije kandi ubushyuhe bwa chip ntibushobora gukwirakwira mugihe; cyangwa ahantu heza ho gukwirakwiza ubushyuhe ntibihagije, kandi hariho ibitagenda neza mubishushanyo mbonera.
Nubwo umubiri wamatara udashyushye gukoraho, ntabwo byanze bikunze ari byiza.
Iyo itara rya LED rikora neza, imirasire nziza igomba kuba ifite ubushyuhe buke, ariko imishwarara ikonje ntabwo byanze bikunze ari nziza.
Chip ntabwo itanga ubushyuhe bwinshi, ikora neza, ikwirakwiza ubushyuhe buhagije, kandi ntabwo yumva ishyushye cyane mukiganza. Ubu ni uburyo bwiza bwo gukonjesha, "ibibi" byonyine ni uko ari uguta ibintu.
Niba hari umwanda munsi ya substrate kandi ntihabeho guhuza neza nubushyuhe, ubushyuhe ntibuzimurwa kandi buzegeranya kuri chip. Ntabwo bishyushye gukoraho hanze, ariko chip imbere yamaze gushyuha cyane.
Hano, ndashaka gusaba uburyo bwingirakamaro - "igice cyamasaha yo kumurika" kugirango menye niba ubushyuhe ari bwiza.
Icyitonderwa: "Uburyo bwo kumurika igice cy'isaha" biva mu ngingo
Uburyo bwo kumurika igice cy'isaha:Nkuko twabivuze mbere, mubisanzwe uko LED ihuza ubushyuhe bwiyongera, flux yamashanyarazi izagabanuka. Noneho, mugihe cyose dupima impinduka zo kumurika itara rimurika kumwanya umwe, turashobora guhitamo ihinduka ryubushyuhe bwihuriro.
Ubwa mbere, hitamo ahantu hatabangamiwe numucyo wo hanze hanyuma ucane itara.
Nyuma yo gucana, hita ufata metero yoroheje hanyuma uyipime, urugero 1000 lx.
Komeza umwanya wamatara na metero yamurika idahindutse. Nyuma yigice cyisaha, koresha metero yamurika kugirango wongere upime. 500 lx bivuze ko flux flux yagabanutseho 50%. Birashyushye cyane imbere. Niba ukoze hanze, biracyari byiza. Bisobanura ko ubushyuhe butarasohoka. Itandukaniro.
Niba agaciro gapimwe ari 900 lx naho kumurika bigabanukaho 10% gusa, bivuze ko ari amakuru asanzwe kandi gukwirakwiza ubushyuhe nibyiza cyane.
Ingano yo gukoresha "igice cyamasaha yamurika": Turabara "luminous flux VS ihuza ubushyuhe" ihinduka ryumurongo wa chip nyinshi zikoreshwa. Duhereye kuri uyu murongo, dushobora kubona umubare wa lumens luminous flux yagabanutse, kandi dushobora kumenya mu buryo butaziguye umubare wa dogere selisiyusi ubushyuhe bw’isangano bwazamutse kugera.
Inkingi ya mbere:
Kuri chip ya OSRAM S5 (30 30), flux yamurika yagabanutseho 20% ugereranije na 25 ° C, naho ubushyuhe bwihuza bwarenze 120 ° C.
Inkingi two:
Kuri chip ya OSRAM S8 (50 50), flux yamenetse yagabanutseho 20% ugereranije na 25 ° C, naho ubushyuhe bwihuza bwarenze 120 ° C.
Inkingi ya gatatu:
Kuri chip ya OSRAM E5 (56 30), flux yamenetse yagabanutseho 20% ugereranije na 25 ° C, naho ubushyuhe bwihuza bwarenze 140 ° C.
Inkingi ya kane:
Kuri OSLOM SSL 90 chip yera, flux flux iri munsi ya 15% kurenza iyo kuri 25 ° C, kandi ubushyuhe bwihuriro bwarenze 120 ° C.
Inkingi ya gatanu:
Ibarura rya Luminus Serise chip, flux flux yagabanutseho 15% ugereranije na 25 and, naho ubushyuhe bwihuza bwarenze 105 ℃.
Nkuko bigaragara ku mashusho yavuzwe haruguru, niba kumurika muri leta ishyushye bigabanutseho 20% nyuma yigice cyisaha ugereranije nubukonje, ubushyuhe bwihuriro bwarenze cyane kwihanganira chip. Birashobora gusuzumwa cyane ko sisitemu yo gukonjesha itujuje ibyangombwa.
Birumvikana ko iyi ari ubwinshi bwimanza, kandi buri kintu gifite ibitemewe, nkuko bigaragara ku gishushanyo:
Birumvikana, kuri LED nyinshi, turashobora gukoresha uburyo bwo kumurika igice cyamasaha kugirango tumenye niba ari byiza cyangwa atari muri 20%.
Wize? Mugihe uhisemo amatara mugihe kizaza, ugomba kwitondera. Ntushobora kureba gusa amatara, ariko koresha amaso yawe atyaye kugirango uhitemo amatara.
Igihe cyo kohereza: Gicurasi-24-2024
