Ko e ha ʻoku kehe ai ʻa e moʻui ʻa e LED mei he ngaahi foʻi ʻuhila tukufakaholo

Ko e taha ʻo e ngaahi lelei fakaʻofoʻofa taha ʻo e maama LED ko ʻene moʻui makehe. Neongo ʻe vela ʻa e foʻi ʻuhila angamaheni hili ha houa ʻe 1,000 pea mo ha compact fluorescent (CFL) hili ha houa ʻe 8,000, ʻoku faʻa fakafuofuaʻi ʻa e maama LED lelei ke tolonga ʻi he houa ʻe 25,000, 50,000, pe naʻa mo e 100,000. Ko e longevity ko ʻeni ko ha tefitoʻi fakaʻaiʻai ia ki he liliu ki he LED ʻi he meʻa kotoa pe mei he ngaahi foʻi ʻuhila nofoʻanga ki he ngaahi ngaue lalahi mo e maama hala. Neongo ia, ʻoku kehe ʻaupito ʻa e founga ʻoku aʻu ai ha LED ki he ngataʻanga ʻo ʻene moʻui mei he ngaahi tekinolosia motuʻa ange. ʻOku motu ʻa e filament incandescent, holoa ʻa e phosphor ʻo e tiupi fluorescent pe maumau ʻa e electrodes—ko ha ngaahi maumau fakatuʻutamaki ʻeni. ʻI he tafaʻaki ʻe taha, ʻoku ʻikai ke "vela" ʻa e LED. Ka ʻoku fakaʻau ke poipoila mamalie ʻi he ʻalu ʻa e taimi. ʻOku ʻiloa ʻa e founga ko ʻeni ko e holoki ʻo e mahuʻinga ʻo e lumen. ʻOku ʻuhinga ʻa e faikehekehe mahuʻinga ko ʻeni ko e "lifespan" ʻo ha LED ʻoku ʻikai ko ha tuʻunga pe ʻe taha ʻo e taʻelavameʻa, ka ko ha tuʻunga kuo fakasiʻisiʻi ai ʻa e maama ki ha tuʻunga ʻoku ʻikai ke toe ʻaonga ki hono fakaʻaongaʻi. Ke ʻomi ʻa e tuʻunga tatau mo falalaʻanga ki he fakakaukau ko ʻeni, ʻoku fakafalala ʻa e kautaha mama ki he tuʻunga mahuʻinga ʻe ua: LM-80 mo e TM-21. Ko e ngaahi tuʻunga fakasaienisi ʻeni ʻoku ne fakaʻata ʻa e ngaahi kautaha faʻu koloa ke fai ha ngaahi fakamatala falalaʻanga fekauʻaki mo e loloa ʻo ʻenau ngaahi koloa LED.

Ko e ha ʻa e ngaahi meʻa ʻoku ne fakapapauʻi ʻa e moʻui ʻo ha maama LED?

ʻOku ʻikai ko ha fika pau ʻa e lifespan ʻo ha LED; ʻoku fakafalala lahi ia ki hono ʻatakai ngaue mo e tuʻunga lelei ʻo hono fokotuʻutuʻu. ʻOku puleʻi ʻe he tefitoʻi moʻoniʻi meʻa ʻe ua ʻa e vave ʻo e holoa ʻa e maama ʻo ha LED: ʻa e mafana ʻo e fetaulakiʻanga mo e ʻau ki muʻa. Ko e mafana ʻo e fetaulakiʻanga (Tj) ko e mafana ia ʻo e semiconductor chip, ʻa ia ʻoku faʻu moʻoni ai ʻa e mama. Ko e meʻa mahuʻinga taha ʻeni ki he moʻui loloa ʻa e LED. Ko e vela ko e fili ia ʻo e LEDs. ʻOku fakavaveʻi ʻe he mafana ʻo e fetaulakiʻanga maʻolunga ange ʻa e holoki ʻo e ngaahi naunau semiconductor, phosphor, mo e encapsulating resins, ʻo iku ki ha holo vave ange ʻi he maama ʻoku maʻu. ʻOku mahuʻinga taha ke tauhi ke maʻulalo ʻa e mafana ʻo e fetaulaki. Ko e meʻa hono ua ko e ʻau ki muʻa—ʻa e ʻuhila ʻoku ne fakalele ʻa e LED. ʻOku fakatatau fakahangatonu ʻa e ʻau ki muʻa ki he ngingila; ʻoku ʻuhinga ʻa e lahi ange ʻo e ʻau ki he maama lahi ange. Neongo ia, ʻoku toe lahi ange ʻa e vela ʻi he fetaulakiʻanga. ʻOku fakamahinoʻi ʻe he ngaahi kautaha LED ʻa e ngaahi feituʻu ʻoku malu ʻi he lolotonga ni. ʻE lava ke maʻu ʻe he ngaue ʻi he ngataʻanga ki ʻolunga ʻo e ngaahi tuʻunga ko ʻeni ha maama lahi ange, ka ʻoku fie maʻu ke maʻu ha puleʻi makehe ʻo e mafana ʻo e ʻea (ko ha meʻa vela lelei maʻolunga) ke taʻofi ʻa e mafana ʻo e fetaulakiʻanga mei he maʻolunga mo fakanounouʻi ʻa e moʻui ʻa e LED. ʻI he tafaʻaki ʻe taha, kapau ʻoku tauhi ʻa e LED chip ke mokomoko ʻo fakafou ʻi he palani lelei ʻo e mafana ʻo e vela—ʻi hono tauhi ʻo e mafana ʻo e fetaulakiʻanga ʻi lalo ʻi he 85°C—ʻe lava ke fakalahi ʻa e moʻui, pea ʻe siʻisiʻi ange ʻa e ola ʻo e moʻui ʻa e ngaahi liliu ʻi he ʻau ki muʻa ʻi loto ʻi he tuʻunga ʻoku fakamahinoʻi. Ko ha ngaue pelepelengesi ia ʻi he vahaʻa ʻo e maama ʻoku maʻu, puleʻi ʻo e mafana mo e moʻui ʻoku fie maʻu.

Ko e ha ʻa e L70 pea ko e ha ʻoku hoko ai ia ko e tuʻunga moʻui ʻo e LED?

ʻI he taimi ʻoku ke sio ai ki ha foʻi ʻuhila LED ʻoku tuʻuaki mo ha "lifetime" ʻo e houa ʻe 50,000, ʻoku meimei ke ʻuhinga ia ki hono L70 life rating. Ko e L70 ko ha meʻafua ia ʻoku fakaʻuhingaʻi ʻe he Illuminating Engineering Society (IES). ʻOku ne fakafofongaʻi ʻa e taimi kuo holoki ai ʻa e maama ʻo ha maama LED pe module ki he 70% ʻo hono ʻuluaki lumens. ʻI hono fakalea ʻe taha, ko e fakafuofua ia ʻo e lahi ʻo e ngaahi houa ngaue kimuʻa pea toki ngaue ʻa e mama ʻoku 30% simmer ange ia ʻi he taimi naʻe foʻou ai. ʻOku lau ʻeni ko e "moʻui ʻaonga" ʻo ha LED ki he lahi taha ʻo e ngaahi polokalama fakalukufua ʻo e mama. Ko e fili ʻo e 70% ʻoku ʻikai ko ha meʻa taʻefakaʻapaʻapa; Ko ha tuʻunga ia ʻoku fakatokangaʻi ai ʻa e fakasiʻisiʻi ʻo e mama pea ʻe lava ke kamata ke ne uesia ʻa e ngaue ʻa e maama naʻe fokotuʻutuʻu ki ai. Hange ko ʻeni, ko ha maama hala kuo mate ʻaki ʻa e 30% ʻe ʻikai ke toe ʻomi ha maama feʻunga ki he malu, pe ko ha ʻofisi ʻe maʻulalo ange ʻi he tuʻunga ʻo e maama ʻoku fokotuʻu atu ki he ngaue. ʻOku mahuʻinga ke mahino ʻoku kei ngaue pe ʻa e LED ʻi hono tuʻunga L70. Kuo teʻeki ai ke taʻelavameʻa; ʻoku poipoila pe. ʻE hokohoko atu ʻene maʻu ʻa e mama, ʻo holo mamalie ange, mahalo ʻi ha ngaahi houa ʻe lauiafe, kae ʻoua kuo fuʻu poipoila ke ʻaonga. ʻOku fokotuʻu mai ʻe he ngaahi fakafuofua ʻe lava ke hokohoko atu hono tuku atu ʻe ha LED ha maama ʻo aʻu ki he houa ʻe 100,000 pe lahi ange kimuʻa pea toki "tamateʻi," ka ko e poini L70 ko e tuʻunga ia ʻoku fakaʻaongaʻi ʻe he kau ʻenisinia, specifiers, mo e regulators ke fakafehoanaki ʻa e ngaahi koloa mo palani ki hono tokangaʻi mo fetongi.

ʻOku kehe fefe ʻa e L70 mei he maumau fakatuʻutamaki ʻi he ngaahi foʻi ʻuhila kehe?

ʻOku fakamamafaʻi ʻe he fakakaukau ʻo e L70 ha liliu mahuʻinga ʻi he founga ʻo ʻetau fakakaukau fekauʻaki mo e moʻui loloa ʻo e maʻuʻanga mama. ʻI he maama vela pe fluorescent, ko e ngataʻanga ʻo e moʻui ko ha meʻa fakafokifa mo pau ia—ʻoku mate ʻa e mama pea ʻoku fie maʻu ke fetongi he taimi pe ko ia. ʻOku reactive ʻa e tokangaʻi. ʻI he LEDs, ko e ngataʻanga ʻo e moʻui ko ha founga mamalie mo ʻiloʻi. ʻOku fakaʻata heni ʻa e palani ki hono tokangaʻi. ʻOku ʻiloʻi ʻe ha pule ʻo ha fale tukuʻanga koloa lahi pe ko ha tokotaha palani fakakolo ki he ngaahi maama hala ʻi he hili ha ngaahi houa pau, ʻe mate ʻa e mama ʻaki ʻa e 30% pea ʻoku totonu ke fakataimi-tepileʻi ke fetongi ko ha konga ʻo ha ngaue fakakulupu ki hono toe fakaleleiʻi ʻo e mama, kae ʻikai tatali ki ha maumau fakafoʻituitui. ʻOku ʻaonga ange ʻa e founga ko ʻeni ki hono fetongi ʻo e kulupu ʻi hono ʻave ha kau ngaue ki ha ngaahi monomono ʻe taha. ʻIkai ngata ai, koeʻuhi ʻoku fuʻu mamaʻo ʻaupito ʻa e poini L70 ʻi he kahaʻu—ʻoku faʻa taʻu ʻe 10, 15, pe naʻa mo e taʻu ʻe 20 ki he ngaahi maama ʻoku ngaue houa ʻe 12 ʻi he ʻaho—ʻoku hoko ʻa e maama LED ko ha konga ʻo e "feʻunga mo fakangaloʻi", ʻo fakasiʻisiʻi ai ʻa e ngaahi kavenga ki hono tokangaʻi. Ka neongo ia, ʻoku toe fakamamafaʻi lahi ange ʻe he moʻui loloa ko ʻeni ʻa e tuʻunga lelei ʻo e ʻuluaki palani mo e ngaahi konga, he ʻe lava ke maʻu ʻe ha LED ʻoku ʻikai lelei hono puleʻi ʻo e mafana ʻo e ʻea ha L70 ʻi ha ngaahi houa siʻi pe ʻe lauiafe, ʻo fakaʻikaiʻi ai hono tefitoʻi lelei.

Ko e ha ʻa e LM-80 pea ʻoku anga fefe ʻene ʻomi ʻa e fakavaʻe ki hono siviʻi ʻo e moʻui ʻa e LED?

Ko e LM-80 ko e founga standardized ia naʻe faʻu ʻe he IES ki hono fuatautau ʻo e holoki ʻo e lumen ʻo e ngaahi maʻuʻanga maama LED. ʻOku ʻikai ko ha kikite ia ʻo e loloa ʻo e moʻui, ka ko e founga fefeka ʻo hono tanaki ʻo e fakamatala ʻoku malava ai ʻa e ngaahi kikite ko ia. Fakakaukau ki he LM-80 ko e tanaki ʻo e fakamatala, pea ko e TM-21 ko e meʻangaue ʻanalaiso mo forecasting ʻoku ne fakaʻaongaʻi ʻa e fakamatala ko ia. ʻOku tuʻutuʻuni ʻe he tuʻunga LM-80 ha founga sivi pau mo fakamole taimi. Kuo pau ke siviʻi ʻe he ngaahi kautaha faʻu koloa ha sipinga fakafofonga ʻo e ngaahi kofukofu LED, fokotuʻutuʻu, pe modules. ʻOku fakalele ʻa e ngaahi sipinga ko ʻeni ʻi he mafana ʻo e puha kehekehe ʻe tolu—angamaheni ko e 55°C, 85°C, pea ko e mafana hono tolu ʻoku fili ʻe he kautaha naʻa nau faʻu, ʻoku faʻa 105°C. ʻOku fua ʻa e maama (lumens) ʻo e sipinga takitaha ʻi ha ngaahi vahaʻa taimi siʻisiʻi taha ʻi ha vahaʻataimi siʻisiʻi taha ʻo e sivi. Lolotonga hono fai ʻo e ngaahi ʻuluaki laukonga, ʻoku fie maʻu ʻe he tuʻunga moʻui ʻa e fakamatala ki ha houa ʻe 6,000 ʻo e ngaue hokohoko atu, pea ʻoku fie maʻu ha lipooti kakato ʻo makatuʻunga ʻi he houa ʻe 8,000 ki he 10,000 ʻo e sivi ke tonu ange. ʻOku ʻomi ʻe he founga ko ʻeni, ʻa ia ʻe lava ke meimei taʻu ʻe taha ke kakato, ha fakatata fakaikiiki ʻo e founga ʻoku holoa ai ʻa e maama ʻo e LED ʻi ha vahaʻa taimi ʻi he mafana kehekehe. Ko e fakamatala ko ʻeni ʻi hono tauhi ʻo e lumen ko e makatuliki ia ʻo ha faʻahinga taukaveʻi falalaʻanga ʻo e moʻui ʻa e LED. ʻOku ne ʻomi ʻa e fakamoʻoni fefeka ʻoku fie maʻu ke hiki mei he fakamaketi ki he moʻoni fakaʻenisinia.

Ko e ha ʻa e TM-21 pea ʻoku anga fefe ʻene extrapolate ʻa e fakamatala LM-80 ke tala ʻaki ʻa e L70?

Neongo ʻoku ʻomi ʻe he LM-80 ʻa e fakamatala sivi moʻoni ʻo aʻu ki he houa ʻe 10,000, ʻoku kei nounou ʻaupito ʻeni ʻi he houa ʻe 50,000+ ʻoku tau ʻamanaki atu ki ai mei he LEDs. ʻOku ʻikai malava ke tatali ʻi ha taʻu ʻe 6 ke siviʻi ha koloa ki hono tuʻunga L70. Ko e feituʻu ʻeni ʻoku hu mai ai ʻa e TM-21. ʻOku ʻomi ʻe he TM-21, ko ha tuʻunga moʻui foki ʻa e IES, ha founga fika ki he extrapolating ʻa e fakamatala ʻo e sivi LM-80 ke fai ha fakafuofua lelei ʻo hono tokangaʻi ʻo e lumen taimi loloa ʻo e LED, tautautefito ki hono moʻui L70. Ko e founga TM-21 ʻoku ʻikai ko ha "laine hangatonu" faingofua. ʻOku kau ai hono fokotuʻutuʻu ʻo e fakamatala LM-80 kuo tanaki ki ha ngaue ʻo e decay exponential. ʻOku fakamatalaʻi ʻe he sipinga fakasitetisitika ko ʻeni ʻa e foʻi moʻoni ko ia ʻoku vave ange ʻa e holoki ʻo e lumen ʻi he kamataʻanga ʻo e moʻui ʻa ha LED pea toki stabilizes ki ha tahifo mamalie ange. ʻI hono ʻanalaiso ʻo e fetoʻaki ʻo e ngaahi fakamatala kuo tanaki, ʻoku fokotuʻutuʻu ʻe he fikaʻi ʻo e TM-21 ʻa e curve ko ʻeni ʻo e decay ʻi he taimi. Ko hono ola ʻoku fakafuofua ki he moʻui ʻa e L70 ʻi ha ngaahi houa, ka ʻoku ʻi ai ha ngaahi fakatokanga mahuʻinga. ʻOku toe ʻomi foki ʻe he tuʻunga TM-21 ʻa e ngaahi fakangatangata ʻo e lipoti, ʻa ia ko hono ʻuhinga ʻoku ʻaonga pe ʻa e extrapolation ʻo aʻu ki ha vahaʻa taimi pau ʻo e sivi (e.g., 6x ʻa e vahaʻataimi sivi LM-80). Ko ia, mei he houa ʻe 10,000 ʻo e fakamatala LM-80, ʻe lava ke pehe ʻoku falalaʻanga ʻa e TM-21 ʻo aʻu ki he houa ʻe 60,000. ʻOku ʻomi ʻe he founga fakasaienisi ko ʻeni ha founga standardized, tuʻumaʻu, mo falalaʻanga ange ki he ngaahi kautaha faʻu ke fakamahinoʻi ʻa e moʻui ʻo ʻenau LEDs, ʻo ʻoange ki he specifiers mo e consumers ʻa e falala ki he ngaahi taukaveʻi ʻo e ngaue.

Ko e ha ʻoku fakatou fie maʻu ai ʻa e LM-80 mo e TM-21 ki he ngaahi taukaveʻi falalaʻanga ʻo e moʻui ʻa e LED?

ʻOku faʻu ʻe hono fakatahaʻi ʻo e LM-80 mo e TM-21 ha founga malohi konga ua ʻoku ne ʻomi ʻa e fefeka fakasaienisi ki he lipooti ʻo e moʻui ʻa e LED. Ka ʻikai ha LM-80, ko ha faʻahinga taukaveʻi pe ʻo e moʻui ko ha mateʻi pe ko ha fakamatala fakamaketi. ʻOku ʻomi ʻe he LM-80 ʻa e fakamatala faingataʻa mo ʻaotitaʻi—ko e fakamoʻoni ia ʻo e founga ʻoku ngaue ai ʻa e LED ʻi he ngaahi tukunga ʻoku mapuleʻi mo mafasia. ʻOku ne fokotuʻu ha fakavaʻe ʻo e moʻoni. Neongo ia, ʻoku ʻikai ʻomi ʻe he fakamatala ʻataʻata pe ʻa e tali aofangatuku ʻoku tau fie maʻu ki he tuʻunga pau ʻo e koloa. ʻOku toʻo ʻe he TM-21 ʻa e fakamatala moʻoni ko ia pea fakaʻaongaʻi ha sipinga fakafika standardized, vakaiʻi ʻe he toʻu tangata ke fokotuʻutuʻu ʻa e ngaue ko ia ki he kahaʻu, ʻo ʻomi kiate kitautolu ha fakafuofua ʻaonga mo falalaʻanga ʻo e moʻui ʻa e L70. Ko e founga sitepu ʻe ua ko ʻeni ʻoku ne fakamavahevaheʻi ʻa e ngaahi kautaha falalaʻanga falalaʻanga mei he niʻihi ʻoku nau fai ha ngaahi taukaveʻi ʻoku fuʻu totuʻa. ʻI he taimi ʻoku ʻomi ai ʻe ha kautaha faʻu ʻa e ngaahi lipooti sivi LM-80 mei ha fale fakatotolo fakasaienisi ʻoku ʻiloʻi pea fakahaaʻi ʻenau fikaʻi TM-21, ʻoku nau poupouʻi ʻa e moʻui ʻo ʻenau koloa ʻaki ha saienisi ʻoku lava ke fakapapauʻi. ʻOku mahuʻinga ʻaupito ʻa e fakamoʻoni ko ʻeni ki he kau fakatau mo e kau specifiers, tautautefito ki he ngaahi ngaue lalahi hange ko e ngaahi malaʻe vaʻinga, hala pe ngaahi fale ngaueʻanga ʻa ia ʻoku maʻolunga ai ʻa e fakamole ki hono fetongi. ʻOku ne fakaʻata ke fakafehoanaki ʻa e ʻapele ki he ʻapele ʻi he vahaʻa ʻo e ngaahi koloa LED kehekehe pea fakapapauʻi ʻe lava ke fakafuofuaʻi totonu ʻa e ngaue taimi loloa mo e fakafoki ʻo e ʻinivesimeni.

Ngaahi faikehekehe mahuʻinga ʻi he vahaʻa ʻo e LM-80 mo e TM-21

ʻOku fakamahinoʻi ʻe he tepile ko ʻeni ʻa e ngaahi fatongia kehekehe ʻo e ongo tuʻunga mahuʻinga ko ʻeni.

Ko hono fakaʻosi, ʻoku fie maʻu ke mahino ʻa e moʻui ʻa e maama LED ke fakalaka atu ʻi he fakafuofuaʻi ʻo e houa faingofua. ʻOku fie maʻu ke fakahoungaʻi ʻa e saienisi ʻo e holoki ʻo e lumen, fatongia mahuʻinga ʻo hono puleʻi ʻo e mafana ʻo e ʻea, pea mo e ngaahi tuʻunga moʻui ʻo e ngaueʻanga—LM-80 ki hono siviʻi fefeka mo e TM-21 ki he fakafuofua falalaʻanga—ʻa ia ʻoku ne fakapapauʻi ʻoku falalaʻanga ʻa e ngaahi taukaveʻi ʻoku fai ʻe he ngaahi kautaha faʻu. Ki ha taha pe ʻoku kau ʻi hono fakamahinoʻi, fakatau mai, pe fili pe ʻa e maama LED tuʻunga maʻolunga, ko hono ʻiloʻi ʻo e faikehekehe ʻi he vahaʻa ʻo e ngaahi tuʻunga moʻui ko ʻeni mo e ʻuhinga moʻoni ʻo e L70 ko e ki ia ki hono fai ha fili fakapotopoto ʻoku ne fakapapauʻi ʻa e ngaue mo e mahuʻinga ki he taimi loloa.

Ngaahi Fehuʻi ʻOku Faʻa ʻEke Fekauʻaki mo e LED Life, LM-80, mo e TM-21

ʻOku taʻofi nai ʻa e ngaue ʻa e LED ʻi hono moʻui L70?

ʻIkai, ʻoku ʻikai tuku ʻa e ngaue ʻa e LED ʻi hono moʻui L70. Ko e L70 rating ko e tuʻunga ia kuo holo ai ʻa e mama ki he 70% ʻo hono ʻuluaki mahuʻinga. ʻE hokohoko atu ʻa e LED ke ʻomi ha mama, ʻo fakaʻau ke poipoila mamalie ʻi ha ngaahi houa ʻe lauiafe ʻo fakalaka atu ʻi hono L70, kae ʻoua kuo fuʻu poipoila ki hono taumuʻa pe maumau ha konga hange ko e fakaʻuli.

Ko e ha ʻoku fie maʻu ai ke u ʻilo fekauʻaki mo e LM-80 mo e TM-21 ʻi he taimi ʻoku ou fakatau ai ha foʻi ʻuhila LED?

Ki ha foʻi ʻuhila faingofua ʻi ʻapi, mahalo he ʻikai fie maʻu ke ke fekumi ki he ngaahi lipoti. Neongo ia, ʻoku mahuʻinga ʻa e ngaahi tuʻunga moʻui ko ʻeni ki he ngaahi ngaue fakakomesiale pe ngaueʻanga ʻoku ke ʻinivesi ai ʻi ha maama feʻunga mo ha paʻanga ʻe lauiafe ʻoku fie maʻu ke tolonga. Ko e founga pe ia ʻe taha ke fakapapauʻi ai ʻa e ngaahi taukaveʻi ʻa e kautaha naʻa nau faʻu ʻa e moʻui. ʻOku ʻomi ʻe ha koloa ʻoku poupouʻi ʻe he fakamatala LM-80 mo e TM-21 ha fakamoʻoni ʻo ʻene moʻui fuoloa, ka ko e taha ʻoku ʻikai ke ne fai ha taukaveʻi taʻefakamoʻoniʻi.

ʻE anga fefe haʻaku ʻai ke tolonga fuoloa ange ʻeku ngaahi maama LED?

Ko e meʻa mahuʻinga taha te ke lava ʻo mapuleʻi ko e vela. Fakapapauʻi ʻoku ʻea lelei hoʻo ngaahi naunau LED pea ʻoku ʻikai fokotuʻu ia ʻi ha ngaahi feituʻu ʻoku tapuni mo ʻikai ʻea tukukehe kapau ʻoku fakataumuʻa pau ki ai. ʻE hanga ʻe hono tauhi ke mokomoko ʻa e fakaʻuli mo e mafana ʻo e ʻea ʻo fakasiʻisiʻi ʻa e mafana ʻo e fetaulakiʻanga ʻo e LEDs, fakatuaiʻi ʻa e founga holoki ʻo e lumen mo fakalahi ʻa e taimi kae ʻoua kuo nau aʻu ki honau tuʻunga L70.