Ua ntej yuav lub rooj teeb lub rooj, ntxiv rau kev txiav txim siab tshwj xeeb, kev ua haujlwm, thiab kev siv cov xwm txheej, txhawm rau ua kom muaj kev nyab xeeb, tsis txhob quav ntsej cov ntawv pov thawj ntawm cov ntim sab nraud. Txawm li cas los xij, muaj ntau daim ntawv pov thawj rau lub rooj teeb, lawv txhais li cas?
Tam sim no, yuav luag tag nrho cov teeb pom kev zoo LED yog siv, txawm tias nws yog qhov muag teeb lossis lub teeb raj. Yav dhau los, feem ntau ntawm cov kev xav ntawm LED yog nyob rau ntawm qhov taw qhia teeb thiab teeb pom kev ntawm cov khoom siv hluav taws xob, thiab lawv tsis tshua nkag mus rau peb lub neej txhua hnub. Txawm li cas los xij, raws li thev naus laus zis tau loj hlob nyob rau xyoo tas los no, ntau thiab ntau dua LED rooj teeb thiab teeb pom kev zoo tau tshwm sim, thiab cov teeb pom kev hauv tsheb thiab teeb pom kev zoo tau maj mam hloov los ntawm LED teeb. Ntawm lawv, LED rooj teeb muaj cov yam ntxwv ntawm kev txuag hluav taws xob, ua haujlwm ntev, kev nyab xeeb, kev tswj ntse, thiab kev tiv thaiv ib puag ncig. Lawv muaj qhov zoo dua li cov qhov muag teev incandescent. Yog li ntawd, feem ntau lub rooj teeb ntawm lub khw tam sim no siv LED teeb pom kev zoo.
Txawm li cas los xij, feem ntau lub rooj teeb ntawm lub khw tshaj tawm cov yam ntxwv xws li flicker-free, anti-glare, txuag zog, thiab tsis muaj teeb meem xiav. Cov no puas muaj tseeb lossis cuav? Nco ntsoov khaws koj lub qhov muag qhib thiab xa mus rau daim ntawv pov thawj daim ntawv pov thawj txhawm rau yuav lub rooj teeb nrog kev lees paub zoo thiab kev nyab xeeb.
Hais txog "Cov Qauv Kev Nyab Xeeb rau Cov Teeb" cim:
Txhawm rau tiv thaiv cov cai thiab kev txaus siab ntawm cov neeg siv khoom, ib puag ncig, kev nyab xeeb, thiab kev nyiam huv, thiab tiv thaiv cov khoom tsis zoo los ntawm kev nkag mus rau hauv kev ua lag luam, tsoomfwv hauv ntau lub tebchaws muaj cov ntawv sau npe raws li cov cai thiab cov qauv thoob ntiaj teb. Qhov no yog tus qauv kev nyab xeeb uas yuav tsum tau ua hauv txhua cheeb tsam. Tsis muaj tus qauv kev nyab xeeb dhau los ntawm txhua lub tebchaws. Zhang tsis tuaj yeem nkag mus rau thaj chaw muag khoom raug cai. Los ntawm cov teeb pom kev zoo no, koj yuav tau txais cov cim sib xws.
Hais txog cov qauv kev nyab xeeb ntawm lub teeb, lub teb chaws muaj cov npe sib txawv thiab cov kev cai, tab sis cov kev cai feem ntau yog tsim los ua raws li cov qauv thoob ntiaj teb ntawm IEC (International Electrotechnical Commission). Hauv EU, nws yog CE, Nyiv yog PSE, Tebchaws Asmeskas yog ETL, thiab hauv Suav teb nws yog CCC (tseem hu ua 3C) ntawv pov thawj.
CCC teev cov khoom uas yuav tsum tau kuaj xyuas, raws li cov kev qhia tshwj xeeb, kev siv cov txheej txheem, kev sib koom ua ke, thiab lwm yam. Nws tsim nyog sau cia tias cov ntawv pov thawj no tsis lav qhov zoo, tab sis yog cov ntawv cim kev nyab xeeb tshaj plaws. Cov ntawv no sawv cev rau cov chaw tsim khoom ntawm tus kheej tshaj tawm tias nws cov khoom ua tau raws li txhua yam kev cai.
Hauv Tebchaws Meskas, UL (Underwriters Laboratories) yog lub koom haum ntiag tug tshaj plaws hauv ntiaj teb rau kev kuaj kev nyab xeeb thiab kev txheeb xyuas. Nws yog kev ywj pheej, tsis muaj txiaj ntsig, thiab teeb tsa cov qauv kev nyab xeeb rau pej xeem. Qhov no yog daim ntawv pov thawj yeem, tsis tas yuav tsum tau ua. UL ntawv pov thawj muaj kev ntseeg siab tshaj plaws thiab kev lees paub siab tshaj plaws hauv ntiaj teb. Qee cov neeg siv khoom muaj kev paub txog kev nyab xeeb ntawm cov khoom lag luam yuav ua tib zoo saib xyuas seb cov khoom puas muaj ntawv pov thawj UL.
Standards hais txog voltage:
Hais txog kev nyab xeeb hluav taws xob ntawm lub rooj teeb, txhua lub teb chaws muaj nws cov kev cai. Qhov nto moo tshaj plaws yog EU LVD Low Voltage Directive, uas yog lub hom phiaj kom muaj kev nyab xeeb ntawm lub rooj teeb thaum siv. Qhov no kuj yog raws li IEC cov qauv kev qhia.
Hais txog cov qauv flicker qis:
"Low flicker" hais txog kev txo lub nra los ntawm flicker rau lub qhov muag. Strobe yog qhov zaus ntawm lub teeb hloov ntawm cov xim sib txawv thiab ci ntsa iab nyob rau lub sijhawm. Qhov tseeb, qee qhov flickers, xws li tub ceev xwm lub tsheb teeb thiab teeb tsis ua haujlwm, tuaj yeem pom meej meej los ntawm peb; tab sis qhov tseeb, rooj teeb inevitably flicker, nws tsuas yog ib qho teeb meem ntawm seb tus neeg siv yuav hnov nws. Tej yam uas tshwm sim los ntawm lub siab zaus flash muaj xws li: photosensitive epilepsy, mob taub hau thiab xeev siab, qhov muag nkees, thiab lwm yam.
Raws li Is Taws Nem, lub flicker tuaj yeem kuaj tau los ntawm lub koob yees duab xov tooj ntawm tes. Txawm li cas los xij, raws li cov lus tshaj tawm ntawm Beijing National Electric Light Source Quality Supervision and Inspection Center, lub koob yees duab xov tooj ntawm tes tsis tuaj yeem ntsuas qhov flicker / stroboscopic ntawm LED khoom. Txoj kev no tsis yog scientific.
Yog li, nws yog qhov zoo dua rau xa mus rau thoob ntiaj teb tus qauv IEEE PAR 1789 daim ntawv pov thawj qis-flicker. Tsawg-flicker lub rooj teeb uas dhau IEEE PAR 1789 tus qauv yog qhov zoo tshaj plaws. Muaj ob qhov ntsuas rau kev ntsuas strobe: Feem pua Flicker (flicker piv, tus nqi qis dua, qhov zoo dua) thiab zaus (flicker tus nqi, tus nqi siab dua, qhov zoo dua, tsis yooj yim pom los ntawm tib neeg lub qhov muag). IEEE PAR 1789 muaj cov qauv tsim los suav cov zaus. Txawm hais tias lub flash ua rau muaj kev puas tsuaj, nws txhais tau hais tias lub teeb tso zis zaus tshaj 3125Hz, uas yog qib tsis muaj kev phom sij, thiab tsis tas yuav tsum kuaj xyuas qhov sib piv flash.
(Lub teeb ntsuas qhov tseeb yog qhov qis-stroboscopic thiab tsis muaj teeb meem. Ib qho chaw dub tshwm nyob rau hauv daim duab saum toj no, uas txhais tau hais tias txawm tias lub teeb tsis muaj flickering txaus ntshai, nws nyob ze rau qhov muaj kev phom sij. tag nrho, uas txhais tau hais tias lub teeb yog kiag li nyob rau hauv qhov kev nyab xeeb ntawm strobe sab hauv).
Daim ntawv pov thawj txog teeb meem xiav xiav
Nrog rau kev txhim kho ntawm LEDs, qhov teeb meem ntawm lub teeb xiav teeb pom kev zoo kuj tau txais kev saib xyuas ntxiv. Muaj ob qho qauv tsim nyog: IEC / EN 62471 thiab IEC / TR 62778. Cov European Union's IEC / EN 62471 yog ntau yam kev ntsuas hluav taws xob hluav taws xob hluav taws xob thiab tseem yog qhov yuav tsum tau ua rau lub teeb rooj tsim nyog. Lub International Electrotechnical Commission's IEC / TR 62778 tsom rau kev ntsuam xyuas lub teeb xiav teeb pom kev zoo ntawm cov teeb thiab faib cov teeb ci xiav teeb meem rau plaub pawg ntawm RG0 txog RG3:
RG0 - Tsis muaj kev pheej hmoo ntawm photobiohazard thaum lub sij hawm nthuav tawm lub retinal tshaj 10,000 vib nas this, thiab tsis tas yuav tsum tau sau npe.
RG1- Nws tsis pom zoo kom saib ncaj qha rau ntawm lub teeb rau lub sijhawm ntev, mus txog 100 ~ 10,000 vib nas this. Tsis tas yuav tsum tau kos npe.
RG2-Nws tsis haum rau saib ncaj qha ntawm lub teeb ci, siab tshaj 0.25 ~ 100 vib nas this. Kev ceeb toom ceeb toom yuav tsum raug cim.
RG3-Saib ncaj qha ntawm lub teeb ci txawm tias luv luv (<0.25 vib nas this) yog qhov txaus ntshai thiab yuav tsum tau ceeb toom.
Yog li, nws raug pom zoo kom yuav lub rooj teeb uas ua raws li IEC / TR 62778 tsis muaj phom sij thiab IEC / EN 62471.
Daim ntawv lo txog kev nyab xeeb ntawm cov khoom
Kev nyab xeeb ntawm cov ntaub ntawv teeb lub rooj yog qhov tseem ceeb heev. Yog tias cov khoom tsim muaj cov hlau hnyav xws li txhuas, cadmium, thiab mercury, nws yuav ua rau tib neeg lub cev raug mob. Lub npe tag nrho ntawm EU RoHS (2002/95/EC) yog "Cov Lus Qhia Txog Kev Tiv Thaiv thiab Kev Tiv Thaiv Cov Khoom Siv Hluav Taws Xob thiab Hluav Taws Xob". Nws tiv thaiv tib neeg kev noj qab haus huv los ntawm kev txwv cov khoom phom sij hauv cov khoom thiab ua kom cov khoom pov tseg kom zoo los tiv thaiv ib puag ncig. . Nws raug nquahu kom yuav lub rooj teeb uas dhau cov lus qhia no kom muaj kev nyab xeeb thiab huv si ntawm cov ntaub ntawv.
Cov qauv ntawm electromagnetic tawg
Electromagnetic fields (EMF) tuaj yeem ua rau kiv taub hau, ntuav, mob leukemia thaum yau, cov neeg laus mob qog nqaij hlav hlwb thiab lwm yam kab mob hauv tib neeg lub cev, cuam tshuam rau kev noj qab haus huv. Yog li ntawd, txhawm rau tiv thaiv tib neeg lub taub hau thiab lub cev raug rau lub teeb, lub teeb xa tawm mus rau EU yuav tsum tau muab tshuaj ntsuam xyuas EMF thiab yuav tsum ua raws li tus qauv EN 62493.
Cov ntawv pov thawj thoob ntiaj teb yog qhov kev pom zoo zoo tshaj plaws. Tsis muaj teeb meem ntau npaum li cas kev tshaj tawm txhawb cov khoom lag luam, nws tsis tuaj yeem sib piv nrog cov kev ntseeg siab thiab cov ntawv pov thawj raug cai. Yog li ntawd, xaiv cov khoom lag luam nrog cov ntawv pov thawj thoob ntiaj teb kom tsis txhob raug dag thiab siv tsis raug. Ntau kev thaj yeeb ntawm lub siab thiab kev noj qab haus huv.
Post lub sij hawm: Jun-14-2024