A back-light LED panelamapangidwa ndi ma LED angapo omwe amaikidwa pa mbale yopingasa yowala molunjika kutsika kudzera pa choyatsira chowulutsira mumlengalenga kuti chiwunikire.Makanema owunikira kumbuyo nthawi zina amadziwikanso kuti mapanelo owunikira mwachindunji.

An gulu la LED loyatsa m'mphepeteamapangidwa ndi mzere wa ma LED omwe amamangiriridwa ku chimango (kapena circumference) ya gululo, kuwalira mopingasa mu mbale yotsogolera kuwala (LGP).LGP imatsogolera kuwala pansi, kupyolera mu diffuser mu malo omwe ali pansipa.Mapanelo oyaka m'mphepete nthawi zina amadziwikanso ngati mapanelo am'mbali.

Amayatsa m'mphepete kapena akumbuyoMagetsi a LEDzabwino kwambiri?

Mapangidwe onsewa ali ndi ubwino ndi zovuta zake.Makanema okhala m'mphepete anali oyamba kupangidwa mochuluka.

Mapangidwe owunikira m'mphepete adasankhidwa pazifukwa zingapo:

• Mbale yotsogolera kuwala (LGP) ndi njira yabwino komanso yosavuta yofalitsira kuwala, kupewa ngozi ya malo owala.
• Kukhalapo kwa LGP ​​kumatanthauza kuti chowulutsira sichokhacho chomwe chimapangitsa kufalitsa kuwala mofanana kotero kuti zipangizo zotsika mtengo zitha kugwiritsidwa ntchito, pokhapokha ngati sizikhala zachikasu ndi zaka.
• Palibe magalasi omwe amafunikira ndipo kapangidwe kake kowunikira m'mphepete kumagwira ntchito bwino ndi ma angle osiyanasiyana amtundu wa LED.
• Kutentha kwa tchipisi ta LED kumatayidwa kudzera pa chimango, kotero kumbuyo kumakhala kopepuka ndipo sikutentha, kotero dalaivala akhoza kuyikidwa pano ngati angafunikire.

M’kupita kwa nthaŵi zovuta za njira imeneyi zinawonekera.Zida zabwino kwambiri za LGP ​​ndi acrylic (PMMA), koma izi zitha kukhala zokwera mtengo, motero polystyrene (PS) yotsika mtengo imagwiritsidwa ntchito nthawi zambiri.Ngati sichikuphatikizidwa ndi zowonjezera zowonjezera za UV, ma PS LGPs amasanduka achikasu pakapita nthawi kotero kuti kutsika kumatsika, kuwalako kumasanduka chikasu chowoneka bwino ndipo pakati pa gululo kumakhala mdima pamene mbali yake imakhala yowala.

Kuphatikiza apo, zowunikira zina zakumbuyo (onani chithunzi pamwambapa) zimachotsedwa ndi zaka zomwe zimasokoneza magwiridwe antchito a mapanelo a LED.

Kupita patsogolo kwaukadaulo tsopano kwalola kuti m'badwo watsopano wa mapanelo owala kumbuyo ayambitsidwe.Izi nthawi zambiri zimakhala zogwira mtima kwambiri ndi mtengo wotsika wa unit kuposa mapanelo am'mbuyomu a LED.

• Ma LED akhala akugwira bwino ntchito, kotero mwayi wotentha womwe umapezeka pamapangidwe owunikira mbali udakhala wocheperako.Mapangidwe owunikira kumbuyo sakhalanso otentha kotero kuti dalaivala sangayike kumbuyo.
• Magalasi akhala otsika mtengo kupanga ndipo zomatira zamakono zimatanthauza kuti zimatha kukhazikika bwino pa LED iliyonse kuti apange kugawa kopepuka popanda chiopsezo choti agwe - kulephera ndi mapanelo am'mbuyo komanso otsika mtengo.
• Ma diffuser a Micro-prismatic akhala ochulukirachulukira, otsika mtengo komanso othandiza kwambiri, kotero kuchitapo kawiri kwa kuphatikiza kwa LGP ​​/ diffuser sikukufunikanso.
• Kuchotsedwa kwa LGP ​​muzojambula zowunikira kumbuyo kumatanthauza kuti mphamvu zomwe zingatheke zopulumutsa mphamvu zimakhala zazikulu kusiyana ndi zojambula m'mphepete, ngati zinthu zina zonse zili zofanana.

Msika wowunikira tsopano umalandira mapanelo owunikira m'mbuyo mosavuta ngati mapanelo owunikira m'mphepete ndipo, chifukwa mapanelo owunikira kumbuyo samafunikira LGP ​​kapena chowunikira chakumbuyo, nthawi zambiri amakhala otsika mtengo kwambiri komanso ma LED omwe ali ndi mphamvu zambiri.

Ndi mavuto ati otsika mtengomapanelo akumbuyo a LED?

Izi ndi zomwe muyenera kuyang'ana.

• Ma LED ochepa kwambiri omwe amagwiritsidwa ntchito.Ma LED ochepa kwambiri (nthawi zambiri 36 kapena kuchepera) amatanthauza kuti amayenera kuyendetsedwa ndi mphamvu yayikulu kuti apange kuwala kofunikira.Poyerekeza ndi mapangidwe ogwiritsira ntchito ma LED ambiri, izi sizigwira ntchito bwino (ma LED amachita bwino kwambiri ndi mafunde otsika), amapanga kutentha kwambiri, amafupikitsa moyo wa ma LED ndikufulumizitsa kutsika kwa lumen.
• Matupi apulasitiki.Makanema abwino owunikira kumbuyo amagwiritsa ntchito thupi lachitsulo.Izi zimakhala zogwira mtima kwambiri ngati choyatsira kutentha kuposa thupi lapulasitiki (lotsika mtengo).Ma LED amatulutsa kutentha kwina ndipo izi zimafunika kuthetsedwa ngati moyo wawo sudzafupikitsidwa.
• Kugawa kowala sikudutsana.Pamalo abwino owala kumbuyo LED iliyonse imakhala ndi lense yake ndipo magalasi amapangidwa kuti kuwala kochokera ku LED iliyonse kumadutsa kuwala kuchokera kwa oyandikana nawo.Izi zidzatulutsa mphamvu yowunikira komanso kulimba mtima ngati LED imodzi yalephera.Kapangidwe ka magalasi osakwanira komanso ma LED ochepa amatha kuchepetsa kuphatikizika pakati pa ma LED ndikuwonjezera chiwopsezo cha mawanga owala ndi akuda kutsogolo kwake.
• Kodi magalasi amakhazikika pamalo ake?Nthawi yokha idzanena, koma chiopsezo ndi chakuti kutentha kopangidwa ndi ma LED, kuphatikizapo zomatira zotsika mtengo zomwe zimagwiritsidwa ntchito molakwika, zidzachititsa kuti magalasi agwe.Zotsatira zake zikhala kugawanika kwa kuwala kosiyana komanso mwinanso kunyezimira.
• Dalaivala womangidwa.Opanga amatha kusunga ndalama pomanga dalaivala m'thupi, koma izi zimakhala ndi zovuta zingapo.Sichingasinthidwe pakagwa vuto ndipo sipadzakhala mdima kapena njira zadzidzidzi.Ndi njira yosasinthika kwambiri.
• Onani ngodya za chimango.Pamagulu otsika mtengo mgwirizano wosawoneka bwino udzawonekera.

UGR <19 ndizowunikira kumbuyo komanso zowunikira m'mbali za LED.

Mapangidwe onsewa amatha, ndi chivundikiro chakumanja chakumanja, kutulutsa magwiridwe antchito a UGR.Kuti mufananize mitundu ndi mitundu yosiyanasiyana yang'anani pa matebulo a UGR omwe ndi gawo la data ya photometric yomwe iyenera kupezeka kuchokera kwa opanga onse odziwika.