Ihe kpatara na isi iyi ọkụ LED na-ekpo ọkụ
The PN junction kpo oku nke LED na-ebute ụzọ n'elu nke wafer site na wafer semiconductor ihe n'onwe ya, nke nwere ụfọdụ nguzogide okpomọkụ. Site n'echiche nke akụkụ LED, dabere na nhazi nke ngwugwu ahụ, a na-enwekwa nguzogide okpomọkụ nke nha dị iche iche n'etiti wafer na njide. Nchikota nke abụọ a thermal resistances mejupụtara thermal eguzogide Rj-a nke LED. Site n'echiche onye ọrụ, Rj-a parameter nke otu LED enweghị ike ịgbanwe. Nke a bụ nsogbu nke ụlọ ọrụ nkwakọ ngwaahịa LED kwesịrị ịmụ, mana enwere ike belata uru Rj-a site na ịhọrọ ngwaahịa ma ọ bụ ụdị sitere na ndị nrụpụta dị iche iche.
Na LED luminaires, okpomọkụ nyefe ụzọ nke LED bụ nnọọ mgbagwoju anya. Ụzọ bụ isi bụ LED-PCB-heatsink-mmiri. Dị ka onye mmepụta nke luminaires, ọrụ bara uru n'ezie bụ ịkwalite ihe ọkụ ọkụ na ikpo ọkụ na-ekpo ọkụ iji belata ihe ndị LED dị ka o kwere mee. Nguzogide okpomọkụ n'etiti mmiri mmiri.
Dị ka a ụgbọelu maka arịọnụ electronic components, na LED components na-tumadi jikọọ na sekit osisi site soldering. Ngwọta okpomọkụ zuru oke nke bọọdụ sekit dabeere na metal dị ntakịrị. Ihe ndị a na-ejikarị eme ihe bụ ọla kọpa na aluminom, na ihe ndị aluminom dị ọnụ ala. Ụlọ ọrụ ahụ anabatala ya nke ọma. Nguzogide okpomọkụ nke mkpụrụ osisi aluminom dịgasị iche dabere na usoro nke ndị nrụpụta dị iche iche. Ihe nguzogide okpomọkụ dị nso bụ 0.6-4.0 Celsius C / W, na ọdịiche ọnụahịa dị oke. Mkpụrụ aluminom na-enwekarị ọkwa anụ ahụ atọ, eriri wiring, oyi akwa mkpuchi, na oyi akwa. Igwe ọkụ eletrik nke ihe mkpuchi ọkụ eletrik n'ozuzu dịkwa oke njọ, yabụ nguzogide okpomọkụ na-esite na oyi akwa mkpuchi, na ihe mkpuchi eji eme ihe dị nnọọ iche. N'ime ha, ihe mkpuchi mkpuchi nke seramiiki nwere obere nguzogide okpomọkụ. Mkpụrụ aluminom dị ọnụ ala na-abụkarị oyi akwa mkpuchi eriri enyo ma ọ bụ oyi akwa mkpuchi resin. Nguzogide okpomọkụ na-ejikọtakwa nke ọma na ọkpụrụkpụ nke mkpuchi mkpuchi.
N'okpuru ọnọdụ nke ọnụ ahịa na arụmọrụ, a na-ahọrọ ụdị aluminom na mpaghara aluminom nke ọma. N'ụzọ dị iche, nhazi ziri ezi nke ọdịdị ikpo ọkụ ọkụ na njikọ kachasị mma n'etiti ikpo ọkụ na ihe nkedo aluminom bụ isi ihe na-eme ka ihe ịga nke ọma nke nhazi ọkụ. Ezigbo ihe na-ekpebi ọnụọgụ nke ikpo ọkụ ọkụ bụ mpaghara kọntaktị nke ikpo ọkụ ọkụ na mmiri na mmiri na-agba ọsọ. General LED oriọna na-passively dissiply site eke convection, na thermal radieshon bụkwa otu n'ime isi ụzọ nke okpomọkụ dissipation.
Ya mere, anyị nwere ike nyochaa ihe kpatara ọdịda nke oriọna LED iji kpochapụ okpomọkụ:
1. Igwe ọkụ ọkụ LED nwere nnukwu nguzogide okpomọkụ, na isi iyi adịghị apụ apụ. Ojiji nke tapawa thermal ga-eme ka mmegharị ikpo ọkụ ọkụ daa.
2.The aluminom substrate na-eji dị ka PCB njikọ ìhè isi iyi. Ebe ọ bụ na mkpụrụ osisi aluminom nwere ọtụtụ ihe mgbochi ọkụ, a pụghị ibunye isi iyi ọkụ nke ọkụ ọkụ, na iji ihe nkwụnye ọkụ na-eme ihe nwere ike ime ka ọkụ ọkụ na-ekpo ọkụ kwụsị.
3.There enweghị ohere maka thermal buffering nke ìhè-emitting elu, nke ga-eme ka okpomọkụ dissipation nke LED ìhè isi na-ada, na ìhè ire ere na-aga n'ihu. Ihe atọ a dị n'elu bụ isi ihe kpatara ọdịda nke ọkụ ọkụ ọkụ ọkụ na ụlọ ọrụ ahụ, ọ dịghịkwa ihe ngwọta zuru oke. Ụfọdụ nnukwu ụlọ ọrụ na-eji mkpụrụ seramiiki na-ekpochapụ ngwugwu bead oriọna, mana enweghị ike iji ha mee ihe n'ihi ọnụ ahịa dị elu.
Ya mere, atụnyere ụfọdụ ndozi:
1. Ntugharị elu nke ikpo ọkụ ọkụ nke ọkụ ọkụ LED bụ otu n'ime ụzọ isi meziwanye ike ikpo ọkụ ọkụ.
Ntugharị elu dị n'elu pụtara na a naghị eji elu dị larịị eme ihe, nke enwere ike nweta ya site na usoro anụ ahụ na nke kemịkal. N'ozuzu, ọ bụ usoro nke ịgbawa ájá na oxidation. Agba bụkwa usoro kemịkalụ, nke enwere ike mechaa yana oxidation. Mgbe ị na-emepụta ngwá ọrụ na-egweri profaịlụ, ọ ga-ekwe omume ịgbakwunye ụfọdụ ọgịrịga n'elu iji mee ka ebe dị elu dịkwuo elu iji meziwanye ike ikpo ọkụ nke oriọna LED.
2. Ụzọ a na-ejikarị eme ka ike ọkụ ọkụ dịkwuo ọkụ bụ iji ọgwụgwọ elu agba ojii.