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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="pcircyj" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637269782155068360/7868258.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="8hvghdo" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)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>吉林防水投光燈具批發(fā),投光燈</p><p><span>***更新：</span>2020-10-24 05:14:19</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="ygxd28h" 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(hào)</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="7sijv2m" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="ks3aqhi" class="box"><p><p style="text-indent:25px">流明，而LED的發(fā)光效率已經(jīng)超過(guò)130lm/W，假定為100lm/W，那么18W就可以達(dá)到1800流明，也就是只要熒光燈一半的功率就可以有相同的亮度。而且LED的發(fā)光效率還在逐年升高。3.電源效率高因?yàn)樗袩艟叱谉霟粢酝舛际切枰袑?zhuān)門(mén)的電源供電的，電源的效率也就影響了整個(gè)燈具的效率。下面以Philips公司的36WT8熒光燈為例。它的額定輸出功率為36W，但是由于接入了電感鎮(zhèn)流器，實(shí)測(cè)輸入功率為42. 4W，吉林防水投光燈具批發(fā)，也就是鐵芯電感損耗了6.4W,效率降低為85%，大多數(shù)國(guó)產(chǎn)的鐵芯電感功耗在10W以上功率因素低于0.512。而LED的電源效率通常高達(dá)90%，--個(gè)18W的LED日光燈只要20W的輸入功率，吉林防水投光燈具批發(fā)。功率因素也可以達(dá)到0.9以上。5mm 的橢圓燈主要用于P16以上的戶外顯示屏，吉林防水投光燈具批發(fā)，3mm的橢圓燈主要用于P12.5、P12、P10的戶外顯示屏。吉林防水投光燈具批發(fā)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="吉林防水投光燈具批發(fā),投光燈" src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637269782155068360/7868258.png"></div><p> 投光燈是指定被照面上的照度高于周?chē)h(huán)境的燈具。又稱聚光燈。通常，它能夠瞄準(zhǔn)任何方向，并具備不受氣候條件影響的結(jié)構(gòu)。主要用于大面積作業(yè)場(chǎng)礦、建筑物輪廓、體育場(chǎng)、立交橋、紀(jì)念碑、公園和花壇等。因此，幾乎所有室外使用的大面積照明燈具都可看作投光燈。投光燈的出射光束角度有寬有窄，變化范圍在0°～180°之間，其中光束特別窄的稱為探照燈。投光燈由光學(xué)部件、機(jī)械部件和電氣部件3部分組成。光學(xué)部件主要是反射器和限制光線投光燈的遮光格片。機(jī)械部件主要是外殼，以及固定和調(diào)整光源位置的調(diào)焦機(jī)構(gòu)，固定燈具的支架、基座和帶有角度指示的調(diào)整燈具光束投射方向的零件。對(duì)絕大部分為密閉式的投光燈，機(jī)械部件還有保護(hù)玻璃及各種密封圈。根據(jù)使用環(huán)境的需要，有的還帶有金屬網(wǎng)罩。性能良好的投光燈還配有空氣過(guò)濾器。電氣部件主要是鎮(zhèn)流器、電容器、觸發(fā)器（根據(jù)光源需要而設(shè)）等。山東防水投光燈批發(fā)要做到紅、綠、藍(lán)三種LED在不同角度時(shí)亮度變化的匹配一致性。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="吉林防水投光燈具批發(fā),投光燈" src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637269781806748047/1466494.png"></div><p style="text-indent:25px">線性調(diào)節(jié)zui簡(jiǎn)便的方法是在LED驅(qū)動(dòng)控制C中使用外部SET電阻來(lái)實(shí)現(xiàn)LED的調(diào)光控制。雖然，這種調(diào)光控制方法有效，但卻缺乏靈活性，無(wú)法讓用戶改變光強(qiáng)度。線性調(diào)節(jié)則會(huì)降低效率，并引起白光LED朝向黃色光譜的色彩偏移。可能是輕微的偏移,但可在敏感應(yīng)用中檢測(cè)出。采用數(shù)字或叫PWM的LED調(diào)光控制法以大于100HZ的開(kāi)關(guān)工作頻率，以脈寬調(diào)制的方法改變LED驅(qū)動(dòng)電流的脈沖占空比來(lái)實(shí)理LED的調(diào)光控制，選用大于100HZ開(kāi)關(guān)調(diào)光控制頻率主要是為了避免人眼感覺(jué)到調(diào)光閃爍現(xiàn)象，在LED的PWM調(diào)光控制下。<span style="display:none;"><span style="display:none;"><span style="display:none;"><span style="display:none;"><span style="display:none;"><span style="display:none;"><span style="display:none;"><span style="display:none;"></span></span></span></span></span></span></span></span></p><p style="text-indent:25px">在一些24小時(shí)連續(xù)工作的場(chǎng)地，例如地下停車(chē)場(chǎng)、24小時(shí)加班生產(chǎn)的工廠等地方。節(jié)電也是十分重要的。如上所述，- -根T8的LED日光燈大約可以節(jié)省20瓦電，一年下來(lái)就可以節(jié)省20x365x24/1000=175.2度電。假如以每度電0. 7元計(jì)算，那么一年下來(lái)，可以節(jié)省電費(fèi)122.64元，兩年下來(lái)，就可以節(jié)省出這根LED日光燈的成本。以后所節(jié)省的電費(fèi)就成為純收益了。所以現(xiàn)在國(guó)外有一種稱之為EMC (能源管理合同Energy ManagementContract)作法。就是由一家財(cái)團(tuán)或銀行出資。替一個(gè)地下停車(chē)場(chǎng)或商場(chǎng)**安裝LED日光燈，但是要向業(yè)主收取所有節(jié)省下來(lái)的電費(fèi)，協(xié)議有效期可能為5年。只要2年以后，就可以回收所有投資，第三年開(kāi)始，所有節(jié)省下來(lái)的電費(fèi)就變成是純收益了。這是一個(gè)十分有利的投資項(xiàng)目。國(guó)內(nèi)也開(kāi)始有人這樣做了。更何況按照Haitz定律，LED的價(jià)格每十年將降低十倍!這樣，紅、綠、藍(lán)三種顏色LED的角度一致性將影響不同角度白平衡一致性，直接影響顯示屏視頻顏色的保真度。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="吉林防水投光燈具批發(fā),投光燈" src="https://tyunfile.71360.com/WaterMark/UploadFile/shxiansheng/637269781652041016/5513893.png"></div><p style="text-indent:25px">在1999年開(kāi)始引入了可以在1瓦電力輸入下連續(xù)使用的商業(yè)品級(jí)LED。這些LED都以特大的半導(dǎo)體芯片來(lái)處理高電能輸入的問(wèn)題，而那半導(dǎo)體芯片都是固定在金屬鐵片上，以助散熱。在2002年，在市場(chǎng)上開(kāi)始有5瓦的LED的出現(xiàn)，而其效率大約是每瓦18至22流明。2003年九月，Cree,Inc. 公司展示了其新款的藍(lán)光LED，在20毫安下達(dá)到35%的照明效率。他們亦制造了一款達(dá)65流明每瓦的白光LED商品，這是當(dāng)時(shí)市場(chǎng)上zui光的白光LED。在2005年他們展示了一款白光LED原型,在350毫安工作環(huán)境下，創(chuàng)下了每瓦70流明的記錄性效率。今<span style="display:none;"></span>白光LED原型,在350毫安工作環(huán)境下，創(chuàng)下了每瓦70流明的記錄性效率。檢查led燈珠的電流，查看led燈珠兩端的電流，是否超過(guò)Led燈珠的工作電流。天津led戶外投光燈具批發(fā)</p><p style="text-indent:25px">垂直視角50°;的橢圓LED，戶內(nèi)顯示屏則選用水平垂直均為120°;吉林防水投光燈具批發(fā)</p><p style="text-indent:25px">靜電是一種危害極大的魔鬼，全世界因?yàn)殪o電損壞的電子元器件不計(jì)其數(shù)，造成數(shù)千萬(wàn)美元的經(jīng)濟(jì)損失。所以防止靜電損壞電子元器件，是電子行業(yè)一項(xiàng)很重要的工作，LED封裝、應(yīng)用的企業(yè)千萬(wàn)不要掉以輕心。任何一個(gè)環(huán)節(jié)出問(wèn)題，都將造成對(duì)LED的損害，使LED性能變壞甚至失效。我們知道人體（ESD）靜電可以達(dá)到三千伏左右，足可以將LED芯片擊穿損壞，在LED封裝生產(chǎn)線，各類(lèi)設(shè)備的接地電阻是否符合要求，這也是很重要的，一般要求接地電阻為4歐姆，有些要求高的場(chǎng)合其接地電阻甚至要達(dá)到≤2歐姆。吉林防水投光燈具批發(fā)</p><p style="text-indent:25px">上海先盛照明電器有限公司是一家照明電器、五金交電、勞防用品、機(jī)電設(shè)備批發(fā)零售；照明電器設(shè)計(jì)、安裝。的公司，是一家集研發(fā)、設(shè)計(jì)、生產(chǎn)和銷(xiāo)售為一體的專(zhuān)業(yè)化公司。上海先盛照明深耕行業(yè)多年，始終以客戶的需求為向?qū)В瑸榭蛻籼峁?**的投光燈，三防燈，筒射燈，燈管。上海先盛照明不斷開(kāi)拓創(chuàng)新，追求出色，以技術(shù)為先導(dǎo)，以產(chǎn)品為平臺(tái)，以應(yīng)用為重點(diǎn)，以服務(wù)為保證，不斷為客戶創(chuàng)造更高價(jià)值，提供更優(yōu)服務(wù)。上海先盛照明創(chuàng)始人顧勇軍，始終關(guān)注客戶，創(chuàng)新科技，竭誠(chéng)為客戶提供良好的服務(wù)。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/1684296.html</p></div></div></div></div></div><div id="pijpghd" class="page-right twoColRt"><div id="fyeawcy" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="k2dwxij" 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" 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