CN107816640A - 一种超薄面光源led表贴灯 - Google Patents
一种超薄面光源led表贴灯 Download PDFInfo
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- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
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- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
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- F21V7/0066—Reflectors for light sources specially adapted to cooperate with point like light sources; specially adapted to cooperate with light sources the shape of which is unspecified
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Abstract
一种超薄面光源LED表贴灯,其包括一个灯架,一个光源模组,一个反射膜,一个导光板,以及一层导光点。所述灯架为一圆盘形并包括一个底部和一个侧壁。所述光源模组的头尾两颗LED芯片的最大距离为所述的侧壁周长的三分之二。所述反射膜为漫反射反光纸。所述导光板的边缘与每一个LED芯片相对的位置设置有一个扩散槽。所述扩散槽为一V形且该V形的底部为圆弧形。所述导光点包括多个间隔设置的圆斑,所述圆斑的面积占所述导光板的总面积的60%。所述超薄面光源LED表贴灯通过设计所述光源模组在灯架中所占的比例,所述导光板的结构以及导光点的形状及所占的比例,以及反射膜的设置,从而可以得到一个既薄且光效最好的面光源LED表贴灯,从而可能满足用户的需求。
Description
技术领域
本发明涉及一种照明设备,特别是一种超薄面光源LED表贴灯。
背景技术
一般的日常生活中,随处都可见到各种照明设备,例如,日光灯、路灯、台灯、艺术灯等。在上述的照明设备中,传统上大部分是以钨丝灯泡做为发光光源。近年来,由于科技日新月异,已利用发光二极管(LED)作为发光来源。甚者,除照明设备外,对于一般交通号志、广告牌、车灯等,亦都改为使用发光二极管做为发光光源。如前所述,使用发光二极管作为发光光源,其好处在于省电,且亮度更大,故于使用上已逐渐普通化。
随着LED灯具的普及,越来越多的场合开始使用LED灯具。对于日益普通使用的。对于日益普通使用的各种形式的LED表贴灯,其一般都有两个要求,一是要薄,二是面光源。
发明内容
有鉴于此,有必要提供一种既薄且为面光源的超薄面光源LED表贴灯,以满足上述需求。
一种超薄面光源LED表贴灯,其包括一个灯架,一个设置在所述灯架中的光源模组,一个设置在所述灯架上的反射膜,一个设置在所述灯架中的导光板,以及一层设置在所述导光板上并位于所述反射膜与导光板之间的导光点。所述灯架为一圆盘形并包括一个底部和一个从该底部延伸出来的侧壁。所述光源模组呈条形并包括多颗LED芯片。所述光源模组的出光方向垂直于所述灯架的侧壁。所述光源模组的头尾两颗LED芯片的最大距离为所述的侧壁周长的三分之二。所述反射膜为漫反射反光纸并设置在所述灯架的底部。所述导光板的边缘与每一个LED芯片相对的位置设置有一个扩散槽。所述扩散槽为一V形且该V形的底部为圆弧形。所述导光板包括一条接收所述光源模组的出射光的入射壁和一条用于反射光线的反射壁。所述入射壁的长度与光源模组的头尾两颗LED芯片的最大距离相当。所述反射壁上设置有反光层。所述导光点包括多个间隔设置的圆斑,所述圆斑的面积占所述导光板的总面积的60%。
进一步地,所述面光源表贴灯还包括一个设置在所述导光板的出光方向上的灯罩。
进一步地,所述灯罩的边缘包括一圈遮光层,所述遮光层的径向宽度。
进一步地,所述灯罩的透光率为100%。
进一步地,所述光源模块还包括一个柔性电路板和一设置在所述柔性电路板上的导热条,所述多个LED芯片与所述导热条分别设置在所述柔性电路板。
进一步地,所述柔性电路板设置有所述多个LED芯片的一侧涂覆有白色反光油墨。
进一步地,所述导光板的厚度与LED芯片的宽度或最大直径相当。
进一步地,所述灯架包括一个从底部延伸出来的断续的阻挡部,和两个分别用于卡设所述光源模组的两端的交错抵挡部,所述阻挡部与导光板的反射壁紧贴设置,所述光源模组设置在所述两个交错抵挡部之间,所述导光板抵顶在所述阻挡部与交错抵挡部之间。
进一步地,所述阻挡部与灯架的侧壁间隔设置,所述灯架还包括至少一个与断续的阻挡部的空隙相对的导线抵顶部,所述导线抵顶部从所述侧壁延伸出来。
与现有技术相比,所述圆形超薄面光源LED表贴灯利用侧发光原理,通过设计所述光源模组在灯架中所占的比例,所述导光板的结构以及导光点的形状及所占的比例,以及反射膜的设置,从而可以得到一个既薄且光效最好的面光源LED表贴灯,从而可能满足用户的需求。
附图说明
以下结合附图描述本发明的实施例,其中:
图1为本发明提供的一种超薄面光源LED表贴灯的分解结构示意图。
图2为图1的超薄面光源LED表贴灯的剖面结构示意图。
图3为图1的超薄面光源LED表贴灯所具有的导光板的结构示意图。
具体实施方式
以下基于附图对本发明的具体实施例进行进一步详细说明。应当理解,此处所描述的具体实施例仅作为实施例,并不用于限定本发明的保护范围。
请参阅图1及图2,其为本发明所提供的一种超薄面光源LED表贴灯100的结构示意图。所述超薄面光源LED表贴灯100包括一个灯架10,一个设置在所述灯架10中的光源模组20,一个设置在所述灯架10上的反射膜30,一个设置在所述灯架10中的导光板40,以及一个设置在所述导光板40的出光方向上的灯罩50。可以想到的是,所述超薄面光源LED表贴灯100还包括其他的一些功能元件,如导线组件,电连接插接组件,以及安装组件等等,对此不再详细说明,其应为本领域技术人员所习知的技术。
所述灯架10为一圆盘形并包括一个底部11,一个从该底部11延伸出来的侧壁12,一个从底部11延伸出来的断续的阻挡部13,以及两个分别用于卡设所述光源模组20的两端的交错抵挡部14。所述灯架10通常不仅会被用于组装其他功能元件,还会被用于导热,因此其可以由导热材料制成,如金属或导热塑料。在本实施例中,为了降低成本,所述灯架10由导热塑料制成。所述底部11用于放置各种零部件,其为圆形。所述侧壁12设置在所述圆形底部10的边缘,以与所述底部11及为灯罩50一起形成一个封闭空间来收容其他功能元件。所述侧壁12的高度与所述光源模组20的宽度相当。所述阻挡部13与灯架10的侧壁12间隔设置,同时所述灯架10还包括至少一个与所述断续的阻挡部13的空隙相对的导线抵顶部15,该导线抵顶部15从所述侧壁12延伸出来。该导线抵顶部15与该阻挡部13一起来固定导线组件的相对位置,即将导线夹设在导线抵顶部15与阻挡部13之间。所述阻挡部13及交错抵挡部14设置在所述底部11,分别用于固定所述导光板40与光源模组20,其会在下面一起说明。
所述光源模组20包括多个LED芯片21,一个用于设置所述LED芯片21的柔性电路板22,以及一个设置在所述柔性电路板上的导热条23。所述LED芯片21为一种能够将电能转化为可见光的固态的半导体器件,它可以直接把电转化为光能,其具有节能,冷光,体积小的特点,并为本领域技术人员所习知,在此不再赘述。所述光源模组20的多个LED芯片21中沿所述柔性电路板22的头尾两颗LED芯片21的最大距离为所述侧壁12的周长的三分之二。由于所述灯架10的圆形,贴设在所述灯架10的侧壁12的光源模组20的多个LED芯片21不可以布满整个侧壁12,否则光之间会形成相互的干涉,最主要的现象就是中间特别亮而周边去相对暗一点,从而不利于形成均匀的面光源。而当头尾两颗LED芯片21的最大距离为所述侧壁12的周长的三分之二时则会消除该现象,达到均匀的面光源效果。当然如果太少,也不利于均匀的面光源的形成,此时往往是有LED芯片21的地方会亮一点,而没有的地方会暗。所述柔性电路板22可以为印刷电路板,用于为每一个LED芯片21提供能源,其本身的结构及工作原理为现有技术,不再详细说明。所述柔性电路板22在设置有LED芯片21的表面上涂覆有白色反光油墨。该白色反光油墨有利于提供光效,即将投射到该电路板22上的反再反射回去。所述柔性电路板22粘贴在所述导热条23上,通过固定该导热条23来固定该光源模组20。所述导热条23与所述灯架10的侧壁12相接触,以利于尽可能多且快地将所述LED芯片21产生的热传导出去,因此所述导热条23由导热材料制成,如金属。所述导热条23的两端卡设在所述灯架10的两个交错抵挡部14之间,从而固定该光源模组20。如图1所示,所述交错抵挡部14包括一个从侧壁12上延伸出来的第一抵挡部141和一个从底部11上延伸出来的第二抵挡部142。所述第二抵挡部142与所述第一抵挡部141及侧壁12间隔设置,从而可以将所述导热条23的一端抵挡在所述第一、第二抵挡部141、142,以及侧壁12之间,而柔性电路板22可以从所述第一、第二抵挡部141、142之间伸出以与导线组件电性连接。
所述反射膜30用于将光源模组20照射向灯架10的底部11的光反射向导光板40。由于LED芯片21的出射光为非散射光,而多为直射光,因此,为了使该表贴灯100的出射面上的光均匀,需要将该直射光打乱成散射光,因此,所述反射膜30为漫反射反光膜。所述反射膜30由反光材料涂覆在纸上制成,同时该反光材料无序涂覆。
请一并结合图3,所述导光板40设置在所述反射膜30上并包括一条接收所述光源模组20的出射光的入射壁41,一条用于反射光线的反射壁42,以及一个与所述反射膜30接触的扩散面43。所述导光板40为一种现有技术,一般由利用光学级的亚克力/PC板材制成,其厚度与LED芯片21的宽度或最大直径相当。所述入射壁41与所述光源模组20的多个LED芯片21紧贴以接收来自该LED芯片21的出射光。为了对所述LED芯片21的出射光尽量进行扩散以形成面光源,所述入射壁41即导光板40的边缘与每一个LED芯片21相对的位置设置有一个扩散槽411。所述扩散槽411为一V形且该V形的底部为圆弧形。所述V形的开口处的弧长与LED芯片21的长度相当,以使所述LED芯片21的出射光可以全部进入所述导光板40中。所述入射壁41的长度与所述光源模组20的头尾两颗LED芯片21的最大距离相当。所述反射壁42上可以设置反光层421。该反光层421为漫反射反光纸。所述扩散面43上设置有多个导光点431,以使该多个导光点431设置在所述导光板40上并位于所述反射膜30与导光板40之间。所述多个导光点431由具有极高反射率且不吸光的材料用UV网版印刷技术印制。利用所述导光板40本身来接收从所述LED芯片21发出来的光,当光线射到各个导光点431时,反射光会往各个角度扩散,然后破坏反射条件并由导光板40的出射面射出。通过设置所述导光点431的疏密程度可使导光板40均匀发光。在本发明中所述导光点431包括多个间隔设置的圆斑,该圆斑的总面积点所述扩散面43的总面积的60%至65%。所述导光板40抵顶在所述阻挡部13与交错抵顶部14的第二抵顶部142之间以固定该导光板40在径向上的相对位置。
所述灯罩50设置在所述导光板40的出光方向上,其作用在于一是保护导光板40不被磨损,二是将所述导光板40、反光膜30组装在一个封闭空间内,形成一个整体。所述灯罩50包括一个出光面51,以及一圈与该出光面51连接的遮光层52。所述出光面51设置在所述导光板40的出光方向上,其透光率可以为100%。所述遮光层52用于阻挡所述光源模组20直接发出的光,因此所述遮光层52的径向宽度与所述扩散槽411到相邻侧壁12的最大距离相当。同时所述灯罩50紧贴所述导光板40的出光面,以避免LED芯片21的光线直接从该灯罩50的出光面51中射出。
与现有技术相比,所述圆形超薄面光源LED表贴灯100利用侧发光原理,通过所述光源模组20在灯架10中所占的比例,所述导光板40的结构以及导光点431的形状及所占的比例,以及反射膜30的设计,从而可以得到一个既薄且光效最好的面光源LED表贴灯,从而可能满足用户的需求。
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则的内所作的任何修改、等同替换和改进等,均应包含在本发明的保护范围之内。
Claims (9)
1.一种超薄面光源LED表贴灯,其特征在于:所述面光源表贴灯包括一个灯架,一个设置在所述灯架中的光源模组,一个设置在所述灯架上的反射膜,一个设置在所述灯架中的导光板,以及一层设置在所述导光板上并位于所述反射膜与导光板之间的导光点,所述灯架为一圆盘形并包括一个底部和一个从该底部延伸出来的侧壁,所述光源模组呈条形并包括多颗LED芯片,所述光源模组的出光方向垂直于所述灯架的侧壁,所述光源模组的头尾两颗LED芯片的最大距离为所述的侧壁周长的三分之二,所述反射膜为漫反射反光纸并设置在所述灯架的底部,所述导光板的边缘与每一个LED芯片相对的位置设置有一个扩散槽,所述扩散槽为一V形且该V形的底部为圆弧形,所述导光板包括一条接收所述光源模组的出射光的入射壁和一条用于反射光线的反射壁,所述入射壁的长度与光源模组的头尾两颗LED芯片的最大距离相当,所述反射壁上设置有反光层,所述导光点包括多个间隔设置的圆斑,所述圆斑的面积占所述导光板的总面积的60%至65%。
2.如权利要求1所述的超薄面光源LED表贴灯,其特征在于:所述面光源表贴灯还包括一个设置在所述导光板的出光方向上的灯罩。
3.如权利要求2所述的超薄面光源LED表贴灯,其特征在于:所述灯罩的边缘包括一圈遮光层,所述遮光层的径向宽度。
4.如权利要求2所述的超薄面光源LED表贴灯,其特征在于:所述灯罩的透光率为100%。
5.如权利要求1所述的超薄面光源LED表贴灯,其特征在于:所述光源模块还包括一个柔性电路板和一设置在所述柔性电路板上的导热条,所述多个LED芯片与所述导热条分别设置在所述柔性电路板。
6.如权利要求5所述的超薄面光源LED表贴灯,其特征在于:所述柔性电路板设置有所述多个LED芯片的一侧涂覆有白色反光油墨。
7.如权利要求1所述的超薄面光源LED表贴灯,其特征在于:所述导光板的厚度与LED芯片的宽度或最大直径相当。
8.如权利要求1所述的超薄面光源LED表贴灯,其特征在于:所述灯架包括一个从底部延伸出来的断续的阻挡部,和两个分别用于卡设所述光源模组的两端的交错抵挡部,所述阻挡部与导光板的反射壁紧贴设置,所述光源模组设置在所述两个交错抵挡部之间,所述导光板抵顶在所述阻挡部与交错抵挡部之间。
9.如权利要求1所述的超薄面光源LED表贴灯,其特征在于:所述阻挡部与灯架的侧壁间隔设置,所述灯架还包括至少一个与断续的阻挡部的空隙相对的导线抵顶部,所述导线抵顶部从所述侧壁延伸出来。
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CN204807732U (zh) * | 2015-07-25 | 2015-11-25 | 深圳市宝得利光电科技有限公司 | 导光板 |
CN105065997A (zh) * | 2015-08-20 | 2015-11-18 | 浙江阳光照明电器集团股份有限公司 | 一种led超薄筒灯 |
CN206234626U (zh) * | 2016-09-13 | 2017-06-09 | 赛尔富电子有限公司 | 一种超薄面光源led表贴灯 |
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US10082253B2 (en) | 2018-09-25 |
EP3293449B1 (en) | 2019-03-06 |
US20180073688A1 (en) | 2018-03-15 |
EP3293449A1 (en) | 2018-03-14 |
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