CN101881387A - Led日光灯 - Google Patents
Led日光灯 Download PDFInfo
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- CN101881387A CN101881387A CN2010101951631A CN201010195163A CN101881387A CN 101881387 A CN101881387 A CN 101881387A CN 2010101951631 A CN2010101951631 A CN 2010101951631A CN 201010195163 A CN201010195163 A CN 201010195163A CN 101881387 A CN101881387 A CN 101881387A
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Classifications
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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
- F21V3/00—Globes; Bowls; Cover glasses
- F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
- F21V3/049—Patterns or structured surfaces for diffusing light, e.g. frosted surfaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
- F21K9/27—Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/69—Details of refractors forming part of the light source
-
- 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
- F21V3/00—Globes; Bowls; Cover glasses
- F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
- F21V3/10—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by coatings
-
- 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
- F21V5/00—Refractors for light sources
- F21V5/02—Refractors for light sources of prismatic shape
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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
- F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
- F21V29/75—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with fins or blades having different shapes, thicknesses or spacing
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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
- F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
- F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
- F21V29/763—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
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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
- F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
- F21V29/86—Ceramics or glass
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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
- F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
- F21V29/89—Metals
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
- F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Abstract
Description
LED日光灯
技术领域
[0001] 本发明涉及一种日光灯,特别涉及一种LED日光灯。 背景技术
[0002] 和传统光源相比,发光二极管(LED)具有较高之发光效率、低辐射、低耗电、寿命 长、低驱动电压、启动快速、环保、抗震抗压、灯具可小型化等优点,以LED作为日光灯光源 的照明装置目前被广泛应用,用来替代气体荧光式日光灯。
[0003] 现有的LED日光灯通常由圆柱形透明灯管以及安装在灯管内LED光源基板组成。 为了提高LED日光灯的照射度,LED光源基板上安装多列的发光二极管(LED),但所有的发 光二极管都向同一个方向照射,使得LED日光灯的照明角度不足。也有为了增大照射角, 采用增加灯罩的光散射性,通常会在制作灯罩的材料中添加扩散粒子来增加灯罩的光散射 性,此种方式虽然能增加光散射的效果,但是对提升照明角度的作用不明显。
发明内容
[0004] 有鉴于此,本发明提供一种照明角度良好的LED日光灯。
[0005] 一种LED日光灯,包括散热基座、固定于散热基座上的灯罩和光源基板、安装在散 热基座与灯罩端部的电源连接器,所述光源基板上安装有多个发光二极管,所述灯罩包括 第一罩体和第二罩体,第一罩体包裹在第二罩体内,该第一罩体采用透明材料制成,第一罩 体在远离光源基板的表面上设置有凸起部,第二罩体的表面设置一光扩散层。
[0006] 发光二极管发出的光线透过第一罩体,通过凸起部的折射作用使光线的出光角度 增大,然后通过第二罩体的散射作用,形成光照明角度较大,均勻柔和的光线。
附图说明
[0007] 图1是本发明一实施方式中LED日光灯的示意图。
[0008] 图2是图1中的LED日光灯沿着IV-IV方向的截面图。
[0009] 图3是图1中的LED日光灯沿着IV-IV方向的截面的光路示意图。
[0010] 图4是本发明一实施方式中凸起部212的两种常用的结构。
[0011] 图5是图1中的LED日光灯与普通日光灯的配光曲线图。
[0012] 主要元件符号说明
[0013]
LED日光灯 100散热基座 10散热鳍片 11
具体实施方式
[0014] 请参考图1,LED日光灯100包括散热基座10、灯罩20和电源连接器30。灯罩20 固定在散热基座10上,形成大致为细长圆管状结构。电源连接器30设置在散热基座10与 灯罩20形成的圆管状结构的两个端部,电源连接器30用来与电源(未示出)建立电连接。
[0015] 请参考图2,是图1中的LED日光灯沿着IV-IV方向的截面图。LED日光灯100还 包括固定在散热基座10上的光源基板40,光源基板40与电源连接器30电连接。光源基板 40上设置有发光二极管41,根据需要发光二极管41可以选择照射角度较大的草帽型发光二极管、较高功率发光二极管、或者彩色的发光二极管等不同种类。
[0016] 所述散热基座10可以选择采用散热性较好的铝合金基材制造,散热基座10底部 设置有相互间隔一定距离的多个散热鳍片11,散热鳍片11用来增加散热基座10的表面积, 以加快空气流通与散热效率。散热基座10上还形成有一凹部12,所述凹部12与散热鳍片 11相背的设置在散热基座10上。光源基板40设置在所述凹部12内,光源基板40与散热 基座10之间通过高导热性的导热胶带相贴合,导热胶带可以更好的将光源基板40产生的 热量传导至散热基座10,然后通过散热鳍片11与空气进行热交换。光源基板40与也可以 通过螺钉固定或者其他方式与散热基座10相贴合,并在光源基板40与散热基座10之间设 置导热板,用来将光源基板40产生的热量传导至散热基座10。
[0017] 散热基座10还包括卡扣部13,卡扣部13与灯罩20边缘的凸边24相扣合,将灯罩 20固定在散热基座10上。灯罩20对应设置在光源基板40的正上方,光源基板40上的发 光二极管41发出的光透过灯罩20出射到外部。灯罩20包括第一罩体21与第二罩体22, 第一罩体21较第二罩体22更靠近光源基板40,第一罩体21与第二罩体22间隔一定距离 且形成一空腔23。
[0018] 第一罩体21采用透明材料制成,具体可以采用聚甲基丙烯酸甲酯、聚碳酸酯、聚苯乙 烯、苯乙烯-甲基丙烯酸甲酯共聚物中的一种或者几种的混合物。第一罩体21为圆弧形的罩体, 第一罩体21靠近光源基板40的一面为入光面210,与入光面210相对的远离光源基板40的一面 为出光面211。出光面211上设置有棱镜结构的凸起部212。所述凸起部212的尺寸随着远离出 光面211的距离增大而逐渐减小,该凸起部212会对从入光面210入射的光线产生折射作用。
[0019] 请一并结合图3,当发光二极管41发出的光线从入光面210入射,透过第一罩体 21射至凸起部212,并在凸起部212产生折射,在本实施方式中,凸起部212对折射的光线 产生发散作用,从而增大发光二极管41的出光角度。
[0020] 发光二极管41发出的光线可以通过棱镜结构的凸起部212调整出光方向,使出射 光朝向至设定的出光角度,从而来调整LED日光灯100的照明角度。棱镜结构的凸起部212 还可以在第一罩体21上不对称的设计,使发光二极管41发出的光线不对称的透过第一罩 体21,从而可以使LED日光灯100 —侧照明角度大,另一侧的照明角度较小。
[0021] 请参考图4,为本实施例中凸起部212的两种常用的结构。其中,212a为锯齿状的 凸起,212b为圆角化的锯齿状的凸起。
[0022] 第二罩体22以透明材料为基材,透明材料可以采用聚甲基丙烯酸甲酯、聚碳酸 酯、聚苯乙烯、苯乙烯-甲基丙烯酸甲酯共聚物中的一种或者几种的混合物。第二罩体22的 表面设置有一光扩散层50。本实施方式中,光扩散层50为涂覆在第二罩体22的外表面的 光扩散涂层。当发光二极管41发出的光线透过第一罩体21后,通过第二罩体22上光扩散 涂层的散射作用,形成均勻柔和的光线。光扩散涂层也可以涂覆在第二罩体22的内表面。
[0023] 光扩散层50也可以采用在内表面或者外表面以胶粘的方式贴覆光扩散薄膜以增 加光散射效果并使光柔和化。
[0024] 请一并参考图5,第一配光区域71表示本实施例中LED日光灯100的配光曲线,第 二配光区域72表示普通LED日光灯的配光曲线,可以看出本实施例中LED日光灯100的照 明角度明显大于普通LED日光灯。
[0025] 本技术领域的普通技术人员应当认识到,以上的实施方式仅是用来说明本发明,
5而并非用作为对本发明的限定,只要在本发明的实质精神范围之内,对以上实施例所作的 适当改变和变化都落在本发明要求保护的范围之内。
Claims (9)
- 一种LED日光灯,包括散热基座、固定于散热基座上的灯罩和光源基板、安装在散热基座与灯罩端部的电源连接器,所述光源基板上安装有多个发光二极管,其特征在于,所述灯罩包括第一罩体和第二罩体,第一罩体包裹在第二罩体内,该第一罩体采用透明材料制成,第一罩体在远离光源基板的表面上设置有凸起部,第二罩体的表面设置有光扩散层。
- 2.如权利要求1所述的LED日光灯,其特征在于:所述凸起部为锯齿状凸起。
- 3.如权利要求1所述的LED日光灯,其特征在于:所述凸起部为圆角化的锯齿状凸起。
- 4.如权利要求1所述的LED日光灯,其特征在于:所述光扩散层为光扩散薄膜,光扩散 薄膜贴附在第二罩体的内表面或者外表面。
- 5.如权利要求1所述的LED日光灯,其特征在于:所述光扩散层为光扩散涂层,光扩散 涂层涂覆在第二罩体的内表面或者外表面。
- 6.如权利要求1所述的LED日光灯,其特征在于:所述散热基座包括卡扣部,灯罩边缘 设置有凸边,该卡扣部与灯罩边缘的凸边相扣合,将灯罩固定在散热基座上。
- 7.如权利要求1所述的LED日光灯,其特征在于:所述散热基座还包括多个间隔设置 的散热鳍片。
- 8.如权利要求1所述的LED日光灯,其特征在于:所述散热基座形成有一凹部,光源基 板设置在所述凹部内。
- 9.如权利要求1所述的LED日光灯,其特征在于:所述光源基板通过导热的导热胶带 与散热基座相贴合。
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CN2010101951631A CN101881387A (zh) | 2010-06-10 | 2010-06-10 | Led日光灯 |
US13/091,134 US20110305024A1 (en) | 2010-06-10 | 2011-04-21 | Led tube lamp |
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Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102022657A (zh) * | 2010-12-28 | 2011-04-20 | 鸿富锦精密工业(深圳)有限公司 | Led照明灯具 |
CN102679226A (zh) * | 2012-05-31 | 2012-09-19 | 东莞市帝信光电科技有限公司 | 一种大发光面无暗区led灯管 |
CN102797984A (zh) * | 2011-05-24 | 2012-11-28 | 旭丽电子(广州)有限公司 | 灯管 |
JP2013012453A (ja) * | 2011-06-02 | 2013-01-17 | Rohm Co Ltd | Ledランプ |
CN103411152A (zh) * | 2013-08-30 | 2013-11-27 | 杭州友旺科技有限公司 | 发光二极管日光灯 |
CN103604056A (zh) * | 2013-11-22 | 2014-02-26 | 林英强 | 一种led照明灯具 |
CN104421844A (zh) * | 2013-09-03 | 2015-03-18 | 深圳市海洋王照明工程有限公司 | 灯具用的透明件及灯具 |
CN105339724A (zh) * | 2013-06-03 | 2016-02-17 | 皇家飞利浦有限公司 | 管状照明设备 |
CN105371231A (zh) * | 2014-09-01 | 2016-03-02 | 鸿富锦精密工业(深圳)有限公司 | 照明装置 |
CN105972557A (zh) * | 2016-07-25 | 2016-09-28 | 安徽众益光电科技有限公司 | 一种护眼led日光灯 |
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