CN106870972A - 发光二极管导光灯管 - Google Patents
发光二极管导光灯管 Download PDFInfo
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0085—Means for removing heat created by the light source from the package
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- 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
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
- F21V29/503—Cooling arrangements characterised by the adaptation for cooling of specific components of light sources
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- 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
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
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- G—PHYSICS
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- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
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- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0045—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide
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- G—PHYSICS
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- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- 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
- F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
- F21V2200/40—Use of light guides, e.g. fibre optic devices, in lighting devices or systems of hollow light guides
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- G02B6/001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type the light being emitted along at least a portion of the lateral surface of the fibre
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- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
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Abstract
一种发光二极管导光灯管,包含光源模块、导光件以及散热件。光源模块包含基座和多个发光二极管,且这些发光二极管热接触于基座。导光件包含入光面、第一出光面、第二出光面及多个光散射微结构,且这些发光二极管设置于相对入光面。散热件设置于相对第二出光面并且热接触于基座,且散热件沿着第二出光面延伸。
Description
技术领域
本发明涉及一种灯具,特别涉及一种发光二极管导光灯管。
背景技术
发光二极管(Light Emitting Diode,LED)作为一种新兴的发光光源,其已经被广泛的运用于各种需要照明的领域。由多个发光二极管组成的模块能产生高功率和高亮度的光源,完全可以取代传统的照明装置,进而成为符合节能环保主题的理想发光光源。目前已有发展发光二极管灯管来取代传统的白炽灯灯管以及荧光灯管作为照明装置使用,其具有高亮度以及使用寿命较长等优点。
一般而言,现有的发光二极管灯管会在灯管内提供一整条发光二极管,并藉由发光二极管发出光线以提供照明。然而,由于现有的发光二极管灯管内的发光二极管只提供部分角度照射,无法像一般日光灯管提供全方位角度的照明。而目前全角度的发光二极管灯管则面临了散热面积太小,导致发光二极管温度过高的问题。
发明内容
鉴于以上的问题,本发明的目的在于揭露一种发光二极管导光灯管,有助于解决发光二极管散热不佳以及光线无法被有效利用于照明外部环境的问题。
本发明所揭露的发光二极管导光灯管包含至少一光源模块、一导光件和一散热件。光源模块包含一基座和多个发光二极管,且这些发光二极管热接触于基座。导光件包含一入光面、一第一出光面、一第二出光面及多个光散射微结构,且这些发光二极管设置于相对入光面。散热件设置于相对第二出光面并且热接触于基座,且散热件沿着第二出光面延伸。
根据本发明所揭露的发光二极管导光灯管,散热件设置于相对第二出光面并且热接触于基座,且散热件沿着第二出光面延伸,而使发光二极管导光灯管的内部空间得以被散热件有效利用,进而令发光二极管导光灯管能提供较大的散热面积帮助发光二极管散热。当发光二极管发光时,发光二极管所产生的热能可传导至散热件,而令散热件能帮助发光二极管进行散热,有助于提升散热效率以避免发光二极管温度过高。另外,散热件亦有助于将自出射至发光二极管导光灯管内部的光线反射回导光件,而改从导光件出射至外部环境,使得原本出射至发光二极管导光灯管内部的光线能被利用于照明外部环境,有效提升发光二极管导光灯管的出光量。
以下结合附图和具体实施例对本发明进行详细描述,但不作为对本发明的限定。
附图说明
图1为根据本发明第一实施例的发光二极管导光灯管的立体示意图;
图2为图1的发光二极管导光灯管的分解示意图;
图3为图1的发光二极管导光灯管的剖视示意图;
图4为根据本发明第二实施例的发光二极管导光灯管的分解示意图;
图5为图4的发光二极管导光灯管的剖视示意图;
图6为根据本发明第三实施例的发光二极管导光灯管的分解示意图;
图7为图6的发光二极管导光灯管的剖视示意图;
图8为根据本发明第四实施例的发光二极管导光灯管的剖视示意图;
图9为根据本发明第五实施例的发光二极管导光灯管的立体示意图。
其中,附图标记
1 发光二极管导光灯管
10 导光件
110 本体
111 第一出光面
112 第二出光面
113 环形入光面
113’ 弧形入光面
120 光散射微结构
130 卡块
20 光源模块
210 基座
211 穿孔
220 发光二极管
230 卡孔
30 散热件
310 散热层
320 光反射层
330 凸缘
L 光线
具体实施方式
以下在实施方式中详细叙述本发明的详细特征以及优点,其内容足以使任何熟习相关技艺者了解本发明的技术内容并据以实施,且根据本说明书所揭露的内容、权利要求范围及附图,任何熟习相关技艺者可轻易地理解本发明相关的目的及优点。以下的实施例进一步详细说明本发明的观点,但非以任何观点限制本发明的范畴。
请同时参照图1至图3。图1为根据本发明第一实施例的发光二极管导光灯管的立体示意图。图2为图1的发光二极管导光灯管的分解示意图。图3为图1的发光二极管导光灯管的剖视示意图。在本实施例中,发光二极管导光灯管1包含一导光件10、二光源模块20以及一散热件30。光源模块20的数量并不以此为限,其可以在制造过程中依照需求任意调整。
导光件10可以包含一本体110和形成于本体110的多个光散射微结构120。导光件10的材质可以是玻璃、亚克力或是其他可透光材料。导光件10可以为中空柱状,并且可具有位于本体110的一第一出光面111、一第二出光面112以及二环形入光面113。环形入光面113介于第一出光面111和第二出光面112之间,且这些光散射微结构120分别设置于第一出光面111和第二出光面112。详细来说,第一出光面111为导光件10面向外部环境的外表面,且第二出光面112为导光件10面向发光二极管导光灯管1内部的内表面。光散射微结构120可以是形成于第一出光面111或第二出光面112的凹槽或凸点,且每个光散射微结构120的尺寸可以是数微米(micrometers)至数百微米之间。光散射微结构120用以破坏光线全反射以使发光二极管导光灯管1出射到外部的光强度更均匀柔合。
二光源模块20分别设置于位于本体110相对二端的二环形入光面113。每个光源模块20包含一基座210和多个发光二极管220。基座210可以是金属板、陶瓷板或是铅制印刷电路板,且发光二极管220可以是能发出可见光的二极管芯片。这些发光二极管220介于本体110和基座210之间。详细来说,导光件10的环形入光面113面对基座210以及发光二极管220,并且这些发光二极管220设置于相对环形入光面113。进一步来说,这些发光二极管220可以直接接触地设置于环形入光面113或是和环形入光面113保持间隔。这些发光二极管220可以沿着环形入光面113呈环状排列或是根据实际的照明需求调整排列方式。此外,发光二极管220热接触于基座210,而使发光二极管220发光时产生的热能得以传导至基座210。在本实施例中,基座210可以卡合于导光件10的本体110(例如图2中将本体110的多个卡块130分别卡合于基座210的多个卡孔230),以防止导光件10偏移或是碰撞到发光二极管导光灯管1的元件。
散热件30用以对发光二极管220进行散热。散热件30设置于相对第二出光面112并且热接触于基座210。进一步来说,散热件30位于导光件10靠近第二出光面112的一侧并热接触于基座210。散热件30相对导光件10沿着第二出光面112延伸。详细来说,散热件30可沿着垂直第二出光面112法线的方向沿伸,或者是沿着第二出光面112稍微倾斜地延伸。导光件10罩覆散热件30。散热件30可以为中空柱状,其可穿设导光件10而导光件10将散热件30围绕于内。导光件10的第二出光面112面对散热件30,且散热件30的相对二端可分别固定于二光源模块20的二基座210。散热件30可以和导光件10相分离,且发光二极管220可沿着环形入光面113排列而共同围绕散热件30。在本实施例中,散热件30固定于基座210的方式可以是用导热胶将散热件30贴附于基座210,但本发明并不以此为限。在其他实施例中,散热件和基座可以分别具有相对应的卡勾与卡孔,通过卡勾卡合于卡孔的方式来组装固定散热件与基座。
此外,如图3所示,散热件30可以包含一散热层310和一光反射层320。散热层310热接触于基座210,且至少部分光反射层320介于散热层310和导光件10的本体110之间。散热层310可以是金属管或是陶瓷管,且光反射层320可以是涂布于散热层310面向导光件10一侧的反光材料。举例来说,光反射层320的材料可以是硫酸钡(Barium Sulfate,BaSOx),而使散热件30的外表呈白色且光滑状态。另外,散热件30的长度L1可以等于或大于导光件10的长度L2,而令发光二极管导光灯管1的内部空间得以被散热件30有效利用,有助于提升散热层310的散热效率。
如图3所示,发光二极管220发出的光线L可自环形入光面113入射至本体110内。当发光二极管220持续发出光线L时,发光二极管220的温度亦随着上升。此时,发光二极管220所产生的热能可依序先传导至基座210后再传导至散热件30的散热层310,而有助于避免发光二极管220温度过高。更进一步来说,散热件30提供额外的散热表面积给发光二极管220,使得散热速率能有效得到提升。
当发光二极管220发出的光线L在本体110内传播至第一出光面111或第二出光面112的时候,入射角大于本体110全反射临界角度的光线L会在第一出光面111或第二出光面112发生全反射,而被限制于本体110内并且继续沿着本体110的轴向方向传播。换言之,入射角小于本体110全反射临界角度的光线L则会自第一出光面111或是第二出光面112出射。当光线L传播至光散射微结构120时,光散射微结构120能令原本会发生全反射的光线L产生散射而出射到本体110外,而有助于提升光线L的出射比率,进一步提升发光二极管导光灯管1的出光量。
此外,自第二出光面112出射的光线L会行进到散热件30的光反射层320,此时光反射层320能将光线L反射,而使光线L由第二出光面112入射到本体110内并朝着第一出光面111前进,进一步能自第一出光面111出射到外部环境。藉此,散热件30有助于将自第二出光面112出射的光线L均匀地反射回本体110内而改从第一出光面111出射,更进一步提升发光二极管导光灯管1的出光量。值得一提的是,散热件30并不一定需要光反射层320才能反射光线L。在其他实施例中,散热件可以不含有光反射层,而是将散热层进行抛光处理使表面变得光滑,藉此同样能达到反射光线L的功效。
综上所述,当发光二极管220持续发出光线L时,发光二极管220所产生的热能可传导至散热件30的散热层310,而有助于对发光二极管220进行散热以避免发光二极管220温度过高。另外,散热件30有助于将自第二出光面112出射的光线L均匀地反射回本体110内而改从第一出光面111出射,使得原本自第二出光面112出射的光线L能被利于照明外部环境,有效提升发光二极管导光灯管1的出光量。
第一实施例中的散热件是以贴附方式固定并热接触于光源模块的基座,但本发明并不以此为限。请同时参照图4和图5。图4为根据本发明第二实施例的发光二极管导光灯管的分解示意图。图5为图4的发光二极管导光灯管的剖视示意图。由于第二实施例和第一实施例相似,故以下仅就相异处进行说明。
在本实施例中,每个光源模块20的基座210具有一穿孔211,并且散热件30具有一凸缘330。散热件30沿着导光件10的轴向穿设穿孔211,并且凸缘330抵靠于基座210背对导光件10的一侧。藉此,散热件30可不需以贴附方式热接触于基座210。凸缘330和穿孔211周围可以设有多个锁孔(未绘示),以适于搭配螺丝相锁合固定。此外,基座210开设有穿孔211而使得散热件30的内部与外部环境相连通,有助于藉由空气对流来进一步提升散热件30的散热效率。举例来说,可以在散热件30二端分别设置一风扇(未绘示),通过风扇导引散热件30内部的空气流动来增加散热效率。
第一实施例中的导光件是中空柱状,但本发明并不以此为限。请同时参照图6和图7。图6为根据本发明第三实施例的发光二极管导光灯管的分解示意图。图7为图6的发光二极管导光灯管的剖视示意图。由于第三实施例和第一实施例相似,故以下仅就相异处进行说明。
在本实施例中,导光件10为弧状,并且具有位于本体110的一弧形入光面113’。第一出光面111为本体110的凸面,且第二出光面112为本体110的凹面。散热件30位于导光件10邻近第二出光面112的一侧,并且发光二极管220皆位于散热件30的下方。藉此,导光件10仅罩覆散热件30的底部,而令散热件30顶部能显露于外部环境,有助于提升散热件30的散热效率。
第一实施例中的光源模块数量为二,但本发明并不以此为限。请参照图8,为根据本发明第四实施例的发光二极管导光灯管的剖视示意图。由于第四实施例和第一实施例相似,故以下仅就相异处进行说明。在本实施例中,光源模块20的数量为一,其设置于位于本体110的二环形入光面113其中的一。
第一实施例中的光散射微结构分别设置于第一出光面和第二出光面,但本发明并不以此为限。请参照图9,为根据本发明第五实施例的发光二极管导光灯管的剖视示意图。由于第五实施例和第一实施例相似,故以下仅就相异处进行说明。
在本实施例中,光散射微结构120全部设置于第二出光面112。换句话说,第一出光面111未设置有任何光散射微结构120,如此发光二极管导光灯管1可以有较佳的外观。发光二极管220的光线藉由第二出光面112为的光散射微结构120及散热件30的光反射层320反射从第一出光面111出射
综上所述,本发明所揭露的发光二极管导光灯管中,散热件设置于相对第二出光面并且热接触于基座,且散热件沿着第二出光面延伸,而使发光二极管导光灯管的内部空间得以被散热件有效利用,进而令发光二极管导光灯管能提供较大的散热面积帮助发光二极管散热。当发光二极管发光时,发光二极管所产生的热能可传导至散热件,而令散热件能帮助发光二极管进行散热,有助于提升散热效率以避免发光二极管温度过高。另外,散热件亦有助于将自出射至发光二极管导光灯管内部的光线反射回导光件,而改从导光件出射至外部环境,使得原本出射至发光二极管导光灯管内部的光线能被利用于照明外部环境,有效提升发光二极管导光灯管的出光量。
当然,本发明还可有其它多种实施例,在不背离本发明精神及其实质的情况下,熟悉本领域的技术人员当可根据本发明作出各种相应的改变和变形,但这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。
Claims (11)
1.一种发光二极管导光灯管,其特征在于,包含:
至少一光源模块,包含一基座和多个发光二极管,且该些发光二极管热接触于该基座;
一导光件,包含一入光面、一第一出光面、一第二出光面及多个光散射微结构,该些发光二极管设置于相对该入光面;以及
一散热件,设置于相对该第二出光面并且热接触于该基座,该散热件沿着该第二出光面延伸。
2.根据权利要求1所述的发光二极管导光灯管,其特征在于,该导光件为中空柱状,该导光件将该散热件围绕于内。
3.根据权利要求1所述的发光二极管导光灯管,其特征在于,该导光件为弧状,该散热件位于该导光件凹面的一侧。
4.根据权利要求1所述的发光二极管导光灯管,其特征在于,该散热件的长度大于或等于该导光件的长度。
5.根据权利要求1所述的发光二极管导光灯管,其特征在于,该散热件为中空柱状,该散热件固定于该基座并且和该导光件相分离。
6.根据权利要求1所述的发光二极管导光灯管,其特征在于,该散热件包含一光反射层和一散热层,该散热层热接触于该基座,且该光反射层介于该散热层和该导光件之间。
7.根据权利要求6所述的发光二极管导光灯管,其特征在于,该光反射层的材料为硫酸钡。
8.根据权利要求1所述的发光二极管导光灯管,其特征在于,该至少一光源模块的数量为二,该二光源模块分别设置于该导光件的相对二端,且该散热件的相对二端分别固定并且热接触于该二基座。
9.根据权利要求1所述的发光二极管导光灯管,其特征在于,该些光散射微结构设置于该第二出光面。
10.根据权利要求1或9所述的发光二极管导光灯管,其特征在于,该些光散射微结构设置于该第一出光面。
11.根据权利要求1所述的发光二极管导光灯管,其特征在于,该至少一光源模块的该基座具有一穿孔,且该散热件穿设该穿孔。
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