Hoʻopilikia i ka emi ʻana o nā kukui LED
Ma keʻano heʻano hou o nā kukui'ōmaʻomaʻo, nā kukui LED e mālama i ka ikehu, pili i ka nohona a me ka lōʻihi o ke ola, a mahalo nuiʻia e nā mea kūʻai. Akā ʻo ka pilikia o ka palaho LED he pilikia ʻē aʻe e kū pono ai nā kukui LED. Ua hoʻopilikia koʻikoʻi ka pohō māmā ʻole i ka hoʻohana ʻana i nā kukui LED.
I kēia manawa, ʻo ka pohō māmā o nā LED keʻokeʻo ma ka mākeke paha kekahi o nā pilikia nui i ka wā e hele ai i nā kukui kīwila. He aha ke kumu o ka attenuation māmā o nā LED? Ma ka ʻōlelo maʻamau, ʻelua mau kumu nui no ka attenuation māmā o nā LED:
I. Nā pilikia maikaʻi o nā huahana LED:
1. ʻAʻole maikaʻi ke olakino o ka chip LED i hoʻopaʻa ʻia, a ʻoi aku ka wikiwiki o ka pōloli ʻana.
2. Aia nā hemahema i ke kaʻina hana, a ʻaʻole hiki ke loaʻa maikaʻi ka wela o ka chip LED mai ka PIN PIN, e hopena i ka kiʻekiʻe kiʻekiʻe o ka mahana chip LED a me ka hoʻonui ʻana i ka chip attenuation.
II. Nā kūlana hoʻohana:
1. Ke alakaʻiʻia ka LED e ka manawa mau, aʻo kekahi mau LED e hoʻouluʻia e ka voltage e hoʻopau ai i ka LED.
2. ʻOi aku ka ʻoi aku o ke kaʻa o kēia manawa ma mua o nā kūlana kaʻa i helu ʻia.
ʻOiaʻiʻo, nui nā kumu no ka palaho o nā huahana LED. ʻO ka pilikia koʻikoʻi ka pilikia o ka wela. ʻOiai ʻaʻole nānā nui nā mea hana i ka pilikia o ka hoʻokuʻu ʻana o ka wela i nā huahana lua, ʻo ka hoʻohana lōʻihi o kēia mau huahana LED lua e uku nui aku i ka hoʻoheheʻe ʻana o ka wela ma mua o laila. ʻOi aku ka kiʻekiʻe o nā huahana LED. ʻO ke kūpaʻa wela o ka chip LED ponoʻī, ka mana o ke kala kala, ka hopena wela o ka substrate, a me ka colloid a me ke kelepona gula e pili pū ana me ka attenuation māmā.
III. ʻEkolu mau mea e pili ana i ka maikaʻi o nā kukui LED
1. Ke koho ʻana i ke ʻano o nā kukui keʻokeʻo LED
ʻO ka maikaʻi o ke kukui keʻokeʻo LED he mea nui loa. No ka hāʻawi ʻana i kekahi mau hiʻohiʻona, ʻo ka ʻāpana kukui keʻokeʻo 14mil keʻokeʻo like me ka ʻelele, ua hoʻopiha ʻia ke kukui keʻokeʻo LED me ka base epoxy resin-made maʻamau, ke keʻokeʻo kukui keʻokeʻo a me ke kāpili pūʻolo. ʻO kahi kukui hoʻokahi i kahi kaiapuni 30 degere e hōʻike ana i kāna ʻikepili attenuation no ka nui o ka mālama ʻana o 70% ma hope o hoʻokahi tausani hola.
Inā hoʻohana ka papa D haʻahaʻa haʻahaʻa glue pōʻai, i loko o ka ʻelemakule like, kona luminous attenuation i kēlā me kēia tausani hola he 45%.
Inā hoʻohana ka papa C haʻahaʻa haʻahaʻa glue pōʻai, i loko o ka ʻelemakule like ʻole, ʻo kona attenuation luminous i kēlā me kēia tausani hola he 12%.
Inā hoʻohana ka papa B haʻahaʻa haʻahaʻa glue pōʻai, i loko o ka wā kahiko like, kona luminous attenuation no tausani hola he 3%.
Inā hoʻohana i ka papa A haʻahaʻa haʻahaʻa kelu pōʻai, i loko o ka iaʻelemakule kaiapuni, kona luminous attenuation no tausani hola he 6%.
2. E noʻonoʻo ana i ka mahana hana o nā ʻāpana LED
Wahi a ka ʻikepili kahiko o ke kukui keʻokeʻo LED hoʻokahi, inā hoʻokahi wale nō ke kukui keʻokeʻo LED e hana a ʻo kona mahana ambient ʻo 30 degere, a laila ʻaʻole ʻoi aku ka mahana o ka bracket i ka wā e hana ai ke kukui keʻokeʻo LED hoʻokahi ma mua o 45 degere. I kēia manawa, e kūpono loa ke ola o kēia LED.
Inā he 100 mau kukui keʻokeʻo LED e hana ana i ka manawa like, ʻo ka manawa ma waena o lākou he 11.4mm wale nō, a laila ʻaʻole ʻoi aku ka mahana o ka bracket a puni nā kukui LED keʻokeʻo ma mua o 45 degere, akā ʻo kēlā mau kukui i waenakonu o ka puʻu kukui. hiki i kahi wela kiʻekiʻe o 65 degere. I kēia manawa, he ho'āʻo paʻakikī ia no nā ʻāpana LED no ka mea ʻo kēlā mau kukui keʻokeʻo LED i hōʻuluʻulu ʻia ma waena e ʻoi aku ka wikiwiki o ka pohō māmā, aʻo nā kukui a puni ka puʻu e ʻoi aku ka lohi.
E like me kā mākou ʻike, makaʻu ʻo LED i ka wela. ʻO ke kiʻekiʻe o ka mahana, ʻoi aku ka pōkole o ke ola LED, ʻoiai ka haʻahaʻa o ka mahana, ʻoi aku ka lōʻihi o ke ola LED. No laila, pono ka mahana hana kūpono o nā LED ma waena o 5 a me 0 degere. Akā ʻaʻole hiki ke hana ma ka hana.
No laila, pono mākou e hoʻoikaika i ka hana wela i ka hoʻolālā ʻana o nā kukui e like me ka haʻahaʻa o ka mahana, ʻoi aku ka lōʻihi o ke ola o LED.
3. E noʻonoʻo ana i nā ʻāpana uila o nā ʻāpana LED
Wahi a nā hopena hoʻokolohua, ʻoi aku ka haʻahaʻa o ke au hoʻokele, ʻoi aku ka liʻiliʻi o ka wela i hoʻokuʻu ʻia a ʻoi aku ka liʻiliʻi o ka mālamalama. Ma ke kumu o ka noiʻi ʻana, ʻo ka hoʻolālā kaʻapuni kukui kukui LED, ʻo 5-10mA wale nō ka holo ʻana o nā kukui LED, a inā ʻoi aku ka nui o nā lams ma luna o 500 a ʻoi aku paha, ʻo 10-15mA wale nō kāna kaʻa. Eia nō naʻe, ʻo 15-18mA wale nō ka mea hoʻokele o ka noi LED maʻamau, kakaikahi ka poʻe e hoʻolālā i kēia manawa i ʻoi aku ma mua o 20mA.
Hōʻike nā hopena hoʻokolohua ma lalo o 14mA Keaukaha o kēia manawa, a me ka uhi impervious i ka makani, ka ea wela o loko a hiki i 71 degere, haʻahaʻa-palapala huahana, ʻaʻohe māmā attenuation i 1000 hola, a me 3% i 2000 hola, ʻo ia hoʻi ka ʻO ka hoʻohana ʻana i kēia kukui keʻokeʻo LED haʻahaʻa i hiki i kona kiʻekiʻe i loko o ia ʻano kaiapuni a laila ʻoi aku ka pōʻino nui iā ia inā ʻoi aku ka nui.
No ka mea, ʻaʻohe hana hoʻoheheʻe wela o ka pā kahiko, no laila ʻaʻole i lawe ʻia ka wela i hana ʻia e ka LED i ka wā e hana ai i waho, ʻoi aku ka nui o nā hoʻokolohua i hōʻoia i kēia wahi. ʻO ka mahana o ka ea i loko o ka pā kahiko ua hiki i kahi wela kiʻekiʻe o 101 degere, ʻoiai ʻo ka wela o ka ʻili o ka uhi ma ka pā kahiko he 53 degere wale nō, ʻo ia ka ʻokoʻa o kekahi mau ʻumi degere. Hōʻike kēia ʻaʻole i loaʻa i ka poʻi plastik i hoʻolālā ʻia ka hana hoʻoluʻu wela. Eia nō naʻe, i ka hoʻolālā ʻana o nā kukui maʻamau, pono ia e noʻonoʻo i ka hana o ka conduction wela a me ka dissipation wela.
No laila, i ka hōʻuluʻulu ʻana, pono e hoʻokumu ʻia ka hoʻolālā ʻana o nā ʻāpana uila o nā pahu LED ma ke kūlana maoli. Inā maikaʻi loa ka hana hoʻoheheʻe wela o ke kukui, ʻaʻole ia he mea nui inā hoʻonui iki ka hoʻokele o ke kukui LED, no ka mea, hiki ke hoʻokuʻu ʻia ka wela i hana ʻia e ke kukui LED i waho, ʻaʻole ia e hōʻino i ke kukui LED. . ʻO ka mea ʻē aʻe, inā paheʻe ka hana hoʻoluʻu wela o ke kukui, ʻoi aku ka maikaʻi o ka hoʻolālā ʻana i ke kaapuni i ʻoi aku ka liʻiliʻi a e hoʻokuʻu i ka wela liʻiliʻi.
