Duk lokacin da muke sadarwa tare da abokan ciniki, ana ambaton kalma ɗaya akai-akai: garanti. Kowane abokin ciniki yana son lokacin garanti daban-daban, kama daga shekaru biyu zuwa shekaru uku, wasu kuma suna son shekaru biyar.
Amma a gaskiya ma, a yawancin lokuta, abokan ciniki da kansu ba su san inda aka samo wannan lokacin garanti ba, ko kuma kawai suna bin taron kuma suna tunanin cewa LEDs ya kamata a ba da garantin na dogon lokaci.
A yau, zan shigar da ku cikin duniyar LED don gano yadda ake siffanta rayuwar fitilu da yanke hukunci.
Da farko dai idan ana maganar ledoji, ta fuskar kamanni, za mu iya kallon su, sun sha bamban da hasken al’ada, domin kusan dukkan LEDs suna da siffa ta musamman.matattarar zafi.
Dabbobin zafi daban-daban ba don kyawun fitilun LED ba, amma don sanya LEDs suyi aiki mafi kyau.
Sa'an nan abokan ciniki za su yi mamakin dalilin da yasa tushen hasken baya da wuya amfani da radiators, amma a zamanin LED kusan dukkanin fitilu suna amfani da radiators?
Domin hanyoyin hasken da suka gabata sun dogara da zafin rana don fitar da haske, kamar fitilun tungsten filament, waɗanda ke dogaro da zafi don fitar da haske, don haka ba sa tsoron zafi. Tushen tsarin LED shine haɗin gwiwar PN semiconductor. Idan zafin jiki ya dan kadan, aikin aiki zai ragu, don haka zafi yana da mahimmanci ga LED.
Da farko, bari mu dubi abun da ke ciki da kuma zane-zane na LED
Tukwici: guntun LED zai haifar da zafi lokacin aiki. Muna komawa zuwa yanayin yanayin haɗin PN na ciki azaman yanayin junction (Tj).
Kuma, mafi mahimmanci, rayuwar fitilun LED yana da alaƙa da kusancin zafin jiki.
Wani ra'ayi da ya kamata mu fahimta: Lokacin da muke magana game da rayuwar LED, ba yana nufin cewa ba za a iya amfani da shi gaba ɗaya ba, amma lokacin da fitowar hasken LED ya kai 70%, gabaɗaya muna tunanin cewa 'rayuwarta ta ƙare'.
Kamar yadda ake iya gani daga wannan adadi na sama, idan ana sarrafa yanayin junction a 105 ° C, to hasken fitilar fitilar LED zai ragu zuwa 70% lokacin amfani da fitilar LED na kusan awanni 10,000; kuma idan ana sarrafa yanayin junction a kusan 60 ° C, lokacin aikinsa zai kasance kusan awanni 100,000 + sa'a, hasken haske zai ragu zuwa 70%. Rayuwar fitilar tana ƙaruwa sau 10.
A cikin rayuwar yau da kullun, abin da muke yawan cin karo da shi shine tsawon rayuwar LED shine sa'o'i 50,000, wanda shine ainihin bayanan lokacin da ake sarrafa yanayin junction a 85 ° C.
Tun da junction zafin jiki yana taka muhimmiyar rawa a rayuwar LED fitilu, yadda za a rage junction zafin jiki? Kada ku damu, bari mu fara duba yadda fitilar ke watsa zafi. Bayan fahimtar hanyar watsar da zafi, za ku iya sanin yadda ake rage yawan zafin jiki.
Yaya fitilu ke watsar da zafi?
Da farko, kana buƙatar sanin hanyoyin canja wurin zafi guda uku: gudanarwa, convection, da radiation.
Babban hanyoyin watsawa na radiyo su ne gudanarwa da watsawar zafi, da kuma zubar da zafi na radiation a ƙarƙashin yanayin yanayi.
Ka'idoji na asali na canja wurin zafi:
Gudanarwa: Yadda zafi ke tafiya tare da wani abu daga wuri mai dumi zuwa sashin sanyaya.
Menene abubuwan da ke shafar tafiyar da zafi?
① Thermal watsin kayan aikin zafi
② Juriya na thermal da ke haifar da tsarin zubar da zafi
③ Siffai da girman kayan da za'a iya sarrafa zafi
Radiation: Lamarin abubuwa masu zafi da ke haskaka zafi kai tsaye a waje.
Wadanne abubuwa ne ke shafar radiyon thermal?
① thermal juriya na kewaye muhalli da matsakaici (yafi la'akari da iska)
② Halayen kayan aikin radiation na thermal da kansa (yawanci launuka masu duhu suna haskakawa da ƙarfi, amma a zahiri canja wurin radiation ba shi da mahimmanci musamman, saboda zafin fitilar bai yi yawa ba kuma radiation ba ta da ƙarfi sosai)
Juyawa: Hanyar canja wurin zafi ta hanyar iskar gas ko ruwa.
Menene abubuwan da ke shafar yanayin zafi?
① Gudun iskar gas da sauri
② Ƙaƙƙarfan ƙarfin zafi, saurin kwarara da ƙarar ruwa
A cikin fitilun LED, ɗigon zafi yana lissafin babban ɓangare na farashin fitilar. Sabili da haka, dangane da tsarin tsarin radiator, idan kayan aiki da zane ba su da kyau, to, fitilar za ta sami matsaloli masu yawa bayan tallace-tallace.
Duk da haka, a gaskiya, waɗannan su ne kawai hasashe, kuma yanzu shine mayar da hankali.
A matsayinka na mabukaci, ta yaya za ka yi hukunci ko zubar da zafi na fitila yana da kyau ko a'a?
Hanyar mafi ƙwararru ba shakka ita ce yin amfani da kayan aikin ƙwararru don gudanar da gwajin yanayin junction.
Koyaya, irin waɗannan ƙwararrun kayan aikin na iya zama hani ga talakawa, don haka abin da ya rage kawai shine mu yi amfani da tsarin taɓa fitilun da aka fi sani da al'ada don fahimtar yanayin zafi.
Sai wata sabuwar tambaya ta taso. Shin yana da kyau a ji zafi ko a'a?
Idan radiator yana zafi lokacin da kuka taɓa shi, babu shakka ba shi da kyau.
Idan radiator yana da zafi don taɓawa, dole ne tsarin sanyaya ya zama mara kyau. Ko dai na'urar radiyo ba ta da isasshen ƙarfin watsawar zafi kuma ba za a iya watsar da zafin guntu cikin lokaci ba; ko kuma tasiri mai tasiri na zafi mai zafi bai isa ba, kuma akwai rashin ƙarfi a cikin tsarin tsarin.
Ko da jikin fitilar bai yi zafi ba don taɓawa, ba lallai ba ne mai kyau.
Lokacin da fitilar LED ke aiki da kyau, mai kyau radiator dole ne ya kasance yana da ƙananan zafin jiki, amma mai sanyaya ba lallai ba ne mai kyau.
Guntu ba ya haifar da zafi mai yawa, yana aiki da kyau, yana watsar da isasshen zafi, kuma baya jin zafi sosai a hannu. Wannan tsari ne mai kyau na sanyaya, kawai "rashin lahani" shine cewa yana da ɗan ɓarna na kayan abu.
Idan akwai ƙazanta a ƙarƙashin substrate kuma babu kyakkyawar hulɗa tare da zafi mai zafi, zafi ba za a canza shi ba kuma zai tara akan guntu. Ba zafi don taɓa waje ba, amma guntu a ciki ya riga ya yi zafi sosai.
Anan, Ina so in ba da shawarar hanya mai amfani - "hanyar haskakawa ta rabin sa'a" don sanin ko zubar da zafi yana da kyau.
Lura: "Hanyar haskaka rabin sa'a" ta fito daga labarin
Hanyar haskaka rabin sa'a:Kamar yadda muka fada a baya, gabaɗaya yayin da zafin mahaɗin LED ya ƙaru, hasken haske zai ragu. Sa'an nan, idan dai mun auna canji a cikin hasken fitilar da ke haskakawa a wuri guda, za mu iya fahimtar canjin yanayin zafi.
Na farko, zaɓi wurin da hasken waje bai damu ba kuma kunna fitilar.
Bayan haskakawa, nan da nan ɗauki mitar haske kuma auna shi, misali 1000 lx.
Rike matsayin fitilar da mitar mai haskakawa ba canzawa. Bayan rabin sa'a, yi amfani da mitar haske don sake aunawa. 500 lx yana nufin cewa hasken haske ya ragu da kashi 50%. Yana da zafi sosai a ciki. Idan kun taɓa waje, har yanzu yana da kyau. Yana nufin zafi bai fito ba. Bambanci.
Idan ƙimar da aka auna shine 900 lx kuma hasken kawai ya ragu da 10%, yana nufin bayanan al'ada ne kuma zafi yana da kyau sosai.
Iyakar aikace-aikace na "hanyar haskaka rabin sa'a": Muna ƙididdige canjin yanayin "hasken haske VS junction zafin jiki" na kwakwalwan kwamfuta da aka saba amfani da su. Daga wannan lankwasa, zamu iya ganin yawan lumen da hasken wutar lantarki ya ragu, kuma a kaikaice zamu iya sanin digiri nawa ma'aunin ma'aunin celcius ya tashi zuwa.
Shafi na ɗaya:
Ga guntuwar OSRAM S5 (30 30), hasken hasken ya ragu da kashi 20% idan aka kwatanta da 25°C, kuma zafin mahaɗin ya wuce 120°C.
Rukunin two:
Ga guntuwar OSRAM S8 (50 50), hasken hasken ya ragu da kashi 20% idan aka kwatanta da 25°C, kuma zafin mahaɗin ya wuce 120°C.
Rukuni na uku:
Ga guntuwar OSRAM E5 (56 30), hasken hasken ya ragu da kashi 20% idan aka kwatanta da 25°C, kuma zafin mahaɗin ya wuce 140°C.
Rukuni na hudu:
Ga OSLOM SSL 90 farin guntu, hasken haske yana 15% ƙasa da wancan a 25°C, kuma zafin mahaɗa ya wuce 120°C.
Rukuni na biyar:
Luminus Sensus Serise guntu, hasken haske ya ragu da kashi 15% idan aka kwatanta da 25 ℃, kuma zafin mahaɗin ya wuce 105 ℃.
Kamar yadda ake iya gani daga hotunan da ke sama, idan hasken da ke cikin yanayin zafi ya ragu da kashi 20% bayan rabin sa'a idan aka kwatanta da yanayin sanyi, yanayin haɗin gwiwa ya wuce iyakar haƙuri na guntu. Ana iya yanke hukunci cewa tsarin sanyaya bai cancanta ba.
Tabbas, wannan shine mafi yawan lokuta, kuma komai yana da keɓancewa, kamar yadda aka nuna a cikin adadi:
Tabbas, ga yawancin LEDs, zamu iya amfani da hanyar haskaka rabin sa'a don yin hukunci ko yana da kyau ko a'a cikin digo 20%.
Kun koyi? Lokacin zabar fitilu a nan gaba, dole ne ku kula. Ba wai kawai za ku iya kallon bayyanar fitilun ba, amma ku yi amfani da kaifi idanunku don zaɓar fitilun.
Lokacin aikawa: Mayu-24-2024
