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href="http://www.cdcfah.com/cp/third-snzmdjeh_tongdengwa/">筒燈</a>?廣東防水投光燈廠家上海先盛照明電器供應(yīng)</p><div id="7p8cny3" class="leftbox clearfix"><h1>廣東防水投光燈廠家上海先盛照明電器供應(yīng)</h1><div id="ob2oeuu" class="proBig"><div id="kyoygbg" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637269781175878906/6687908.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="ib27e8b" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637269781175878906/6687908.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="ckq3uv8" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>廣東防水投光燈廠家</p><p><span>***更新：</span>2020-06-19 10:34:24</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="rez87li" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海先盛照明電器有限公司</a></p><p><span>聯(lián)系人：</span>顧勇軍</p><p><span>郵箱: </span>522366548@qq.com</p><p><span>電話: </span>13301861712</p><p><span>傳真: </span>021_</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>021-54169416</p><p><span>地址: </span>陶干路1199號</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="a88yiit" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="xqbl3iy" class="box"><p><p style="text-indent:25px">國外照明光源發(fā)展史（1） 15000年前,法國拉斯科Lascaux巖洞，已出現(xiàn)人類diyi盞燈,這種燈是在空心石或貝殼或其他類似物中放入浸滿動物油脂的苔蘚等植物，廣東防水投光燈廠家,并用于點(diǎn)燃照明的器具。公元前5000年,人類用油脂多的鳥和魚通過一燈芯點(diǎn)燃照明,在地中海- - 帶,人們用芝麻和堅(jiān)果等植物油或魚油照明。公元前2000年,巴勒斯坦已出現(xiàn)人造燈。大約在公元前7世紀(jì),希臘人已開始制作赤土陶器燈以替代手執(zhí)火把，廣東防水投光燈廠家。人類的照明方式進(jìn)入了“見光必見燈”的時代后,火焰是weiyi發(fā)出照明光線的來源，但各種火焰光源有如^下缺點(diǎn):不安全、不可靠、不清潔,以及發(fā)光效率低下，廣東防水投光燈廠家、功率太小和發(fā)光不穩(wěn),無法在火焰四周加.上各種.控制光分布的光學(xué)系統(tǒng)從而得到各種配光分布的燈具。到了中世紀(jì),人工照明由簡單的木柴蘸油演進(jìn)到油燈和蠟燭,大約在蠟燭作為光源的時期出現(xiàn)了專門的燈具?；鹱鳛檎彰鞴庠匆苍诓粩嗟匮葑?從火把、松節(jié)油火把、蠟燭發(fā)展到煤油燈。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東防水投光燈廠家" src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637269781175878906/6687908.png"></div><p style="text-indent:25px">挑選絕招在選擇燈具的過程中，-定要明白這樣幾個挑選前提:首先是安全性，在選擇燈具時不能- -味地貪便宜，而要先看其質(zhì)量，檢查質(zhì)保書、合格證是否齊全。zui貴的不一定是比較好的，但太廉價的一定是不好的。很多便宜燈質(zhì)童不過關(guān)，往往yinhuan無窮，-旦發(fā)生火災(zāi)，后果不堪設(shè)想。其次在燈飾選擇上要注意風(fēng)格-致。燈具的色彩、造型、式樣，必須與室內(nèi)裝修和家具的風(fēng)格相稱，彼此呼應(yīng)。華而不實(shí)的燈飾非但不能錦上添花，反而畫蛇添足。在燈具色彩的選擇上，除了須與室內(nèi)色彩基調(diào)相配合之外，當(dāng)然也可根據(jù)個人的喜愛選購。尤其是燈罩的色彩，對氣氛起的作用很大。燈具的尺寸、類型和多少要與居室空間大小、總的面積、室內(nèi)高度等條件相協(xié)調(diào)。另外，由于現(xiàn)在燈具樣式層出不窮，買燈飾之前，你比較好先了解一下燈飾的發(fā)展趨勢，以免燈飾新買回去便遭淘汰的厄運(yùn)。從省電的角度出發(fā)，可以多安裝節(jié)能光源。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東防水投光燈廠家" src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637269781652041016/5513893.png"></div><p style="text-indent:25px">LED吸頂燈的優(yōu)點(diǎn) LED本身的發(fā)光效率已經(jīng)到達(dá)130lm/W以上，所以LED吸頂燈的整體光效已經(jīng)可以達(dá)到100Im/W.而且這個效率還在每年增長，據(jù)估計(jì)，到2020年，LED本身的發(fā)光效率將會達(dá)到2401m/W。光效高就意味著節(jié)能。根據(jù)實(shí)測的結(jié)果，-盞8W的LED就可以取代一盞32W的吸頂燈。電功率可以節(jié)省4倍以上。壽命長 LED的壽命為10萬小時，做成燈具以后，現(xiàn)在實(shí)際上公認(rèn)的壽命為至少3萬小時，高質(zhì)里的可以做到5萬小時，要比熒光燈長10倍以上，即使比較高壽命的三基色熒光燈的壽命為1萬小時，也還高出5倍以上。不含汞 3.4無紫外線輻射，無光線污染 3.5可以根據(jù)需要提供各種色溫的光線，通常有550-3700°K，和4700-7000°K 。 3.5可以根據(jù)需要提供各種色溫的光線，通常有550-3700°K，和4700-7000°K 。 3.7不需要鋁制散熱器，成本低，重里輕。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/312692.html</p></div></div></div></div></div><div id="3eq8z2g" class="page-right twoColRt"><div id="saqgzza" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="gtepqal" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="8o3w8yy" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img 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