CN101776254A - 发光二极管灯具及其光引擎 - Google Patents
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- F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
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- F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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Abstract
本发明公开一种发光二极管灯具,包括:一光学部,包括一发光二极管光源及一出光通道;一电气部,其包括至少一电路板,用以提供发光二极管光源所需要的驱动电源、控制电路及电源管理;及一散热部,包括一向内凹陷的长条状散热基体及该散热基体外周面延伸形成的若干鳍片,该散热基体内周面纵向围绕延伸形成一腔体,该腔体内至少设有一吸热面及一出光窗口,该出光窗口形成在该散热基体沿纵向的两侧端缘之间,所述发光二极管光源与该吸热面紧密热接触,以传输及移除发光二极管光源发光时所释放的热量。
Description
技术领域
本发明涉及一种半导体照明装置,特别是关于一种发光二极管灯具及其所采用的光引擎
背景技术
人们由于长期过度依赖石化燃料,除造成能源短缺及石油价格高涨而牵动经济发展,更使全球二氧化碳与有害气体的排放浓度日益增加,导致地球暖化所引起的气候反常、生态环境的破坏、以及对人类生存的危害日益显现,为永续经营人类赖以生存的地球生态环境,必须同时解决能源危机与环境污染问题,开发新能源及再生能源是推动节约能源及高效率使用能源最重要的策略,而传统照明所消耗的能源极为可观,发展照明节能将是最重要的新能源科技,而半导体照明采用高功率高亮度的发光二极管(LED)为光源,该新光源以其高发光效率、节能、长寿、环保(不含汞)、启动快、指向性等优点,具有广泛取代传统照明光源的潜力。
LED由于输入电能的80%~90%转变成为热量,只有10%~20%转化为光能,且由于LED芯片面积小,因此芯片散热是LED封装必须解决的关键问题;优良的散热系统可在同等输入功率下得到较低的工作温度,延长LED的使用寿命,或在同样的温度限制范围内,增加输入功率或芯片密度,从而增加LED灯的亮度;结点温度(Junction temperature)是衡量LED封装散热性能的重要技术指标,由于散热不良导致的结点温度升高,将严重影响到发光波长、光强、光效和使用寿命。
应用高功率高亮度LED在照明的新光源上,必须配合高效率的散热机构以尽量降低LED的结点温度,才能发挥上述诸多优点,否则照明装置的发光亮度、使用寿命将大打折扣,影响所及将使该照明装置的节能效果不彰,并直接冲击该照明装置的可靠度,引发严重的光衰甚至使照明装置失效。
日光灯主要由灯管、整流器和启动器组成,因发光效率约为钨丝灯泡的两倍,已成为目前最普遍使用的发光二极管灯具,其发光是利用密闭的气体放电原理,具体结构包括于真空的玻璃管内壁镀以荧光物质,并于其内充入惰性气体(例如氩(Argon)、氖(Neon)或氪(Krypton))及汞蒸汽,通过能产生高电压的整流器使管内导通的电流激发汞原子产生气体放电,并在过程中释放出紫外光及热量,通过所述荧光物质吸收紫外光后释放出可见光;不同的荧光物质会发出不同的可见光;然,日光灯的主要气体放电物质为具有毒性的汞及荧光物质,长年大量使用日光灯所累积的废弃物将使环境受到严重污染。
发明内容
有鉴于此,有必要提供一种具有高散热效率的全方位发光二极管灯具,并提供一种该发光二极管灯具所采用的光引擎。
一种光引擎,包括:至少一发光二极管光源;及一散热部,包括一内凹的长条状散热基体及该散热基体外周面延伸形成的若干鳍片,该散热基体内周面纵向围绕延伸形成一腔体,该腔体内至少设有一吸热面及一出光窗口,该出光窗口形成在该散热基体沿纵向的两侧端缘之间,所述发光二极管光源设于该吸热面上并与该吸热面紧密热接触,以传输及移除发光二极管光源发光时所释放的热量。
一种发光二极管灯具,其包括上述光引擎;一光学部,包括该光引擎的发光二极管光源及一出光通道,用以提供所需的照明亮度与发光特性及对发光二极管光源保护;一电气部,包括至少一电路板,用以提供发光二极管光源所需要的驱动电源、控制电路及电源管理。
作为该发光二极管灯具及其光引擎的进一步改进,该吸热面两侧向外倾斜延伸设有二扩散面。
作为该发光二极管灯具及其光引擎的进一步改进,该出光窗口处的散热基体两侧端缘向外翻折形成并纵向延伸有托架,一与散热基体的形状相匹配的透明导光罩纵向延伸并固定至散热基体的出光窗口处,与腔体组合形成出光通道。
作为该发光二极管灯具及其光引擎的进一步改进,该导光罩靠近散热基体的两侧缘分别沿纵向间隔设置气孔。
作为该发光二极管灯具及其光引擎的进一步改进,该散热基体靠近光源的吸热面上分别沿纵向间隔设置气孔。
本发明具有如下优点:
本发明提供一种具有若干鳍片及散热基体的发光二极管灯具及其光引擎,该散热基体于靠近光源的一侧向内凹陷形成一腔体,且在腔体内的两扩散斜面形成一扩增的散热面积,达到轻化光引擎并强化散热的功效。
本发明提供一种具有若干鳍片及散热基体的发光二极管灯具及其光引擎,该散热基体的腔体内由两扩散斜面形成一光杯,且在对应于该光杯位置的腔体外壁所设置的鳍片形成另一扩增的散热面积,达到简化照明配光并强化散热的功效。
本发明运用在照明装置中建立一新的低流阻冷却气流散热通道的技术手段,除透过气流温差所产生的热浮力导引气流进入各鳍片之间,并导引另一股新增的气流通过该腔体内,进一步强化光引擎的散热效率。
附图说明
下面参照附图,结合实施例对本发明作进一步描述。
图1是本发明发光二极管灯具第一实施例(去除导光罩后)的立体组装示意图。
图2是本发明发光二极管灯具第一实施例与图1相反视角的立体组装示意图。
图3是本发明发光二极管灯具第一实施例中灯盘的立体示意图。
图4是本发明发光二极管灯具第一实施例中光引擎的立体组装示意图。
图5是图4的立体分解示意图。
图6是图4的横向剖面示意图。
图7是本发明发光二极管灯具第二实施例中光引擎的剖面示意图。
图8是本发明发光二极管灯具第三实施例中光引擎的剖面示意图。
图9是本发明发光二极管灯具第四实施例中光引擎的剖面示意图。
图10是本发明发光二极管灯具第五实施例中光引擎的剖面示意图。
具体实施方式
以下参照图1至图10,对本发明发光二极管灯具予以进一步说明。
图1是本发明发光二极管灯具第一实施例的(去除导光罩之后)立体组装示意图,图2是本发明发光二极管灯具第一实施例的与图1相反视角的立体组装示意图,图3是本发明发光二极管灯具第一实施例中灯盘的立体示意图,图4是本发明发光二极管灯具第一实施例中光引擎的立体组装示意图,图5是图4的立体分解示意图,图6是图4的横向剖面示意图。该发光二极管灯具主要包括一散热部10、一光学部20及一电气部30。其中:
光学部10是贴设于散热部20上,其包括至少一发光二极管光源11及一出光通道12。该发光二极管光源11包括一导热基板111、设于该导热基板111上的至少一发光体112及若干电极(图未示),其中所述发光体112是由至少一发光二极管芯片经透明封装所形成;所述发光二极管光源11的导热基板111与散热部20的一吸热面262的表面之间的紧密热接触,可先在其间涂抹一层热界面材料(TIM),再将已套装电绝缘垫片的若干螺丝(图未示)分别穿过导热基板111上的若干固定孔(图未示),以便锁固于散热部20的吸热面262上对应所设螺孔(图未示),也可通过回焊方式将导热基板111直接黏贴(SMT)于该吸热面262上,以传输及移除该发光二极管光源11发光时释出的热量。该发光二极管光源11的发光可通过电线114连接发光二极管光源11的电极与电气部30中的一电路板31以及通过电线311连接电路板31与外部电源达成。
所述发光二极管光源11与吸热面262之间的紧密热接触还可通过先对吸热面262的表面进行电绝缘处理,然后在经电绝缘处理的该吸热面262的表面上铺设基板电路如铜铂基板电路,再将至少一发光二极管芯片与所述基板电路电连接并于发光二极管芯片外包覆一透明封装体而达成,采用此种方式的发光二极管光源不包含导热基板111,从而避免导热基板111与吸热面262之间接触热阻的产生,发光二极管光源11所产生的热量可直接由吸热面262吸收并予以快速散发,可进一步提升散热效率;为方便叙述,本实施例及以下实施例皆仅以包含有导热基板111的发光二极管光源11予以说明,实际上,各实施例中的发光二极管光源11皆可用上述不含导热基板111的发光二极管光源替代。
出光通道12为导引该光源11向外射出光线的通道,其包括一光杯121及一导光罩122。其中,该光杯121用于规范该光源11向外射出光线的方向,具有增加出光利用率的功效,该光杯121是由散热部20组合而成,因此下面有关出光通道12的说明结合散热部20一并予以说明。
散热部20包括一横截面呈内凹的长条状散热基体22,该散热基体22外周面纵向并列布设有若干鳍片24。该散热基体22的内周面纵向延伸围成一内凹腔体26,该腔体26包括一位于顶部的吸热面262以及该吸热面262两侧缘分别以一定角度向外倾斜延伸形成的扩散斜面264。该散热基体22沿纵向延伸的两侧端缘之间具有一定间隔,从而形成出光窗口,并自该两侧端缘向外翻折形成托架226以及靠近托架226的外周面上向外水平延伸出具有固定孔229的凸缘228,该托架内侧设有卡槽225。其中,该吸热面262是用于配置光源11,以便吸收并传输该光源11发光时所释放的热量,并由散热基体22外周面上的若干鳍片24予以散发至周围空气中,从而达到轻量化灯具以及强化散热的功效;上述光源11与散热部20构成一光引擎。
该腔体26内的两扩散斜面264因设置在出光通道12中,从而形成导引所述光源11向外射出光线的光杯121,达到简化照明配光的功效;所述光源11发光时所释放的热量除可对应吸热面262的散热基体22传输到对应的鳍片24处,也可通过该散热基体22传输到两侧的扩散斜面264及其对应的鳍片24,以分摊所述光源11的热负荷,使所述对应于该光杯121位置的腔体外侧所设置的鳍片24形成另一扩增的散热面积,达到进一步强化散热的功效;且由于所述散热部20可通过挤形制程一体成形,不但适用于量产而大幅降低成本,且较的通过接合不同散热组件的现有传热方式,本创作可大幅降低接口热阻,从而确保光引擎获致低结点温度的高出光效率。
导光罩122为包括至少一光学镜片的透光罩盖,图示的一与散热基体22形状相匹配的导光罩122是扣合于腔体26出口所设置的托架226上,并于两端以侧盖124封闭,该侧盖124是以穿设于固定孔1242的螺丝锁固于散热部20的散热基体22两端上,并于该侧盖124上开设一电线通孔1244,以便光源11及电气部30的电源电连接;所述导光罩122也可以其它形式的透光罩盖扣合于腔体26出口所设置的托架226的卡槽225中。
上述导光罩中的光学镜片型式可以依配光及照明需求而有不同的设计,也可以在光源的封装过程中直接与该透明发光体一体成型,又可将该导光罩中的光学镜片直接罩盖于个别的光源上,以避免二次光学造成的光损耗。
在实际应用时,上述光源有可能由若干分离的个别光源组合而成,此时出光通道中的光杯及导光罩可以是对应于该若干分离的光源分开设置;也可以只用一个光杯及一个导光罩的配置;同理,也可以数组光杯分别涵盖数组分离的光源,以及数组导光罩分别涵盖数组分离的光源的配置。
本发明的光引擎是透过气流温差导致的密度差而产生热浮力,并通过热空气向上漂浮的惯性趋势引导鳍片24外的冷空气进入该鳍片24之间,使进入各鳍片24之间的冷空气吸收由光源传至鳍片的热量而升温并上浮,在此同时,新的冷空气会自动填补已上浮的热空气空间,并同样经吸热升温上浮而发挥鳍片局部散热的效果;上述冷热气流交替进出各鳍片之间形成自然循环的移热通道,从而使所述光引擎具有高散热效率,达到有效移除该光源发光时释出的热量。
为进一步强化光引擎的散热效率,必须使该腔体26内的两扩散斜面264充分发挥因散热面积的扩大所产生的散热效益,因此,实有必要在该腔体26内建立一持续而顺畅的自然循环气流通道,以冷却该扩散斜面264;为达此目的,在该腔体26内靠近光源11的吸热面262上,沿纵向每隔一段距离开设有分别对应于鳍片24间隙的若干气孔222,这些气孔222分别贯穿散热基体22,以便使腔体26顶部与朝鳍片24方向的外界导通,并在导光罩122的两侧边沿轴向(或者纵向)设置另一组若干气孔123,以便使腔体26内的底部与朝导光罩122方向的外界导通;通过所述两组若干气孔123以形成自外界将冷却气流导入该腔体26内,并将吸热后的该气流自顶部的气孔222顺利排出,从而持续驱动外部低温气流导入腔体26中,进一步强化光引擎的散热效果。
所述持续驱动外部低温气流并导入腔体26中的散热机制,是通过散热基体22传导光源11释出的热量而使腔体26内壁呈现较高的温度,并加热腔体26中既有的空气而升温,该热空气因密度降低而使体积膨胀并上浮,进而自腔体26顶部的气孔222排出,并在此同时驱动外界较低温的空气自腔体26下方的导光罩122所设若干气孔123引入腔体内,如此周而复始形成腔体26内的自然冷却循环,达到更进一步强化光引擎的散热效果,从而确保该发光二极管灯具发挥高效率与稳定的光输出效果。
所述贯通散热基体的气孔位置可依光源的形式作不同的配置,例如:使用本实施例中的条状光源时,则因顶部平面的中央区已被整合各分散发光体于一共同的导热基板所占用,因此,除可在避开该导热基板的顶部平面设置这些气孔外,也可在接近该顶部平面的所述扩散斜面上设置,以避免或降低高温空气滞留于腔体的顶部而达到较佳的散热效果;使用若干分散的独立光源时,可以在该光源之间的顶部平面设置该气孔而达到最佳的散热效果。
综上所述,本发明结合在腔体26内与腔体26外所扩增的散热面积,及由腔体26内的若干气孔(222,123)导引气流通过其内扩增的散热面积,形成一新增的气流通道,使本发明光引擎的散热效果远优于现有技术,从而确保应用在半导体照明上获致低结点温度的高效率照明效果。
电气部30包括一电路板(图未示)及一外壳,该电路板是通过电线与光源11的电极及电源连接,上述电气部30中的电源除可采用与光源11匹配的直流电源外,也可透过电源转换器将交流市电转换为适合该光源11的直流电源,并提供该光源11的驱动电源及发光二极管灯具的电源管理;该外壳为隔离保护该电路板的一密封壳体。
上述照明装置还包括一灯盘40,用以整合所述若干日光灯管的光学部10、电气部30及散热部20,并藉以形成一整合所述若干光引擎的模块化的照明装置;该灯盘40包括一罩体42及一扣合于该罩体42内的配光罩46。该罩体42为由板状体的中部内凹形成一背板422以及一容置空间424。为使所述日光灯管稳固安装于该灯盘40上,该罩体42上设有与日光灯管相同数量的长形开孔426,用以使散热部20凸伸于该发光二极管灯具的背面,并使这些日光灯管的出光通道12凸伸于该发光二极管灯具的正面;为达此目的,通过在该散热部20的腔体26边缘沿纵向的两侧分别凸伸的条状凸缘228固设于所述罩体42上;组装时,先将这些日光灯管的出光通道12自罩体42背面的开孔426向该发光二极管灯具的正面凸伸,且以该凸缘228支撑于所述开孔426的边缘缘,并以螺丝将凸缘228上设置的若干固定孔与该开孔426边缘所对应的固定孔锁固,以使灯盘40正面形成该发光二极管灯具的光学部10,并使灯盘40背面形成该发光二极管灯具的散热部20。
该配光罩46包括呈框型的本体460,其本体460内对应于每个罩体42的开孔426两边缘位置向外倾斜延伸形成二锥面462及一透空区464,以便将日光灯管的射出光线作照明环境的配光;另外,在配光罩46上沿该开孔426的横向间隔设置若干遮光板466以防止眩光。
照明装置组装的方法为:先将这些日光灯管的出光通道12自罩体42的背面伸入该开孔426中,并将设置于散热部20的凸缘228支撑于所述开孔426的边缘上,使散热部20凸伸于该罩体42的背面,以发挥最大的散热效果,再以螺丝将凸缘228上设置的若干固定孔与该罩体42的开孔426边缘所对应的固定孔予以锁固,然后将配光罩46扣合于该罩体42内;所述组装完成的模块化照明装置使罩体42正面形成该照明装置的光学部10,背面形成该照明装置的散热部20;另外,在不妨碍外观的前题下电气部30设置于罩体42的正面,以达方便安装及维护检测的功效;安装方法为:在安装配光罩40的前,先将该电气部30固设于罩体42正面相邻开孔426之间的中心线处并在罩体42的背板422上设有汇线孔428,用于各种电线等汇集后穿过,然后将配光罩46扣合于该罩体42内即可,如此可使该电气部30完全被隐藏于灯盘40内的隐蔽空间内。
本发明通过所述罩体42将若干支半导体日光灯管整合成一模块,以形成一种能延伸照明容量的模块化照明装置,从而可依不同的照明需求,将该模块的数量及配置作弹性的组合,达到降低成本,发挥设计多样化及应用灵活化的功效。
本发明通过现有日光灯装置,只需在既有灯盘40的罩体42上开设安装半导体照明光引擎的开孔426,即可将现有日光灯转换成为半导体照明装置,不但可达到既有资源的充分回收再利用的减废功效,且可因此大幅节省制造与安装成本的经济效益。
图7是本发明发光二极管灯具第二实施例中光引擎的组装剖面示意图;本实施例与第一实施例的主要区别在于:本实施例中光源11a的导热基板111a与腔体26a的吸热面262a之间另外安装一压扁的热管50,该热管50是密合镶嵌于吸热面262a的沟槽中,并使该热管50与导热基板111a的接触面及腔体26a的吸热面262a维持在同一平面,以便将光源11a的热负荷快速而均匀地传导至散热基体22a,使散热基体22a的温度分布均匀化,藉以进一步提升发光二极管灯具的整体散热效率。
图8是本发明发光二极管灯具第三实施例中光引擎的组装剖面示意图;本实施例与前述实施例的主要区别在于:本实施例中腔体26b内没有设置吸热面262a,而只设置了两个扩散斜面264b,而光源11b分别设置于所述两扩散斜面264b上,以进一步扩大吸热面积,使更均匀地分摊光源11b的热负荷,达到有效提升发光二极管灯具的整体散热效率;另外,为配合发光二极管灯具的整体配光,所述两扩散斜面264b之间的张角较前述实施例为大,以避免出光的相互阻档或干扰,此外,由于两扩散斜面264b上的光源11b相对称,因此可在两扩散斜面264b的相交处,即腔体26b的至高点贯穿设置气孔222b,以建立顺畅的气流通道,从而达到强化散热的功效。
图9是本发明发光二极管灯具第四实施例中光引擎的组装剖面示意图;本实施例与第二实施例的主要区别在于:本实施例中腔体26c的两扩散斜面264c上分别设有一辅助光源11c,以进一步将总体光源热负荷分布在扩大的吸热面上,或藉以增加总体光源热负荷。
图10是本发明发光二极管灯具第五实施例中光引擎的组装剖面示意图;本实施例与第四实施例的主要区别在于:本实施例中腔体26d的横截面呈弧形,内凹形成一弧形吸热面266,该弧形吸热面266上纵向并列设有三个相同的光源11d,并三个光源11d的导热基板111d与弧形吸热面266之间设有板形热管50d,所述光源11d的导热基板111d及板形热管50d的横截面形状与弧形吸热面266的弧度相对应,均呈弧形。本实施例其除可使配光较均匀外,也由于不存在吸热面与两扩散斜面间的张角,可使吸热面作更充分的利用。
由上述的实施方式已进一步清楚说明本发明的技术特征及达成的功效,包括:
1)本发明提供一种具有散热鳍片及实心体的光引擎,该实心体于靠近光学室的一侧向内凹陷形成一腔体,且在腔体内的两扩散斜面形成一扩增的散热面积,达到轻化光引擎并强化散热的功效。
2)本发明提供一种具有散热鳍片及实心体的光引擎,该实心体的腔体内由两扩散斜面形成一光杯,且在对应于该光杯位置的腔体外壁所设置的鳍片形成另一扩增的散热面积,达到简化照明配光并强化散热的功效。
3)本发明运用在发光二极管灯具中建立一新的低流阻冷却气流通道的技术手段,除透过气流温差所产生的热浮力导引气流进入各鳍片之间,并导引另一股新的气流通过该腔体内,进一步强化光引擎的散热效率。
4)本发明结合在腔体内与腔体外所扩增的散热面积,及由腔体内的若干气孔导引气流通过其内扩增的散热面积,形成一新增的气流通道,使本发明光引擎的散热效果远优于现有技术,从而确保应用在半导体照明上获致低结点温度的高效率照明效果。
5)本发明提供一种具有散热鳍片及实心体的光引擎,在该实心体的腔体内靠近光源的顶部还设有分别对应于这些鳍片之间的若干气孔,并在导光罩设置另一组若干气孔,从而额外自该若干气孔持续驱动外部低温气流导入腔体中,进一步强化光引擎的散热效果。
6)本发明提供一种具有均热功效的光引擎,进一步以热管强化光源的吸热效率及鳍片的散热效率,使该光引擎应用在半导体照明上获致低结点温度的高效率照明效果。
7)本发明提供一种具有日光灯外观特性的半导体发光二极管灯具,特别是由一外周面向外分布的若干鳍片及由内周面凹陷呈一腔体的散热部,所述散热部可通过挤形制程一体成形,不但可大幅降低热阻,且适用于量产而大幅降低成本。
8)本发明提供一种具有日光灯特性的半导体发光二极管灯具,特别是在不需整流器和启动器的电连接特性下,提供一种较现有日光灯供电需求更为简单实用的半导体发光二极管灯具及其光引擎,达到方便更换及安装的功效。
9)本发明提供一种能延伸照明容量的模块化半导体日光灯装置,通过一灯盘整合若干支日光灯管成一模块,依不同的照明需求,将该模块的数量及配置作弹性的组合,达到降低成本,发挥设计多样化及应用灵活化的功效。
10)本发明提供一种高效率散热并兼顾照明与配光的日光灯模块及其光引擎,通过自然循环、灯盘结构及腔体内壁的吸热面与两扩散斜面的张角或弧度,达到高可靠度、长寿命及高光效的功效。
11)本发明通过不同的光引擎形状搭配均一的光源配置方式以简化发光二极管灯具的配光工程,从而避免现有发光二极管灯具必需针对其中的每一光源作繁复的个别导光调配,且使光源获致更准确的定位而优化光学的性能。
12)本发明通过不同的光引擎形式搭配现有日光灯灯盘,只需在灯盘上设置安装光引擎的开孔,即可转换成为半导体发光二极管日光灯,达到节省成本、减废再利用、易于安装、精减工时的经济效益。
Claims (16)
1.一种光引擎,包括:
至少一发光二极管光源;及
一散热部,包括一内凹的长条状散热基体及该散热基体外周面延伸形成的若干鳍片,该散热基体内周面纵向围绕延伸形成一腔体,该腔体内至少设有一吸热面及一出光窗口,该出光窗口形成在该散热基体沿纵向的两侧端缘之间,所述发光二极管光源设于该吸热面上并与该吸热面紧密热接触,以传输及移除发光二极管光源发光时所释放的热量。
2.如权利要求1所述的光引擎,其特征在于:所述腔体对应出光窗口的位置设有一吸热面及自吸热面两侧向外倾斜延伸设有二扩散斜面。
3.如权利要求2所述的光引擎,其特征在于:所述吸热面上配置所述发光二极管光源。
4.如权利要求3所述的光引擎,其特征在于:所述二扩散斜面上分别设有所述发光二极管光源。
5.如权利要求1所述的光引擎,其特征在于:所述腔体具有向外倾斜延伸并与出光窗口相对位置处相交的二扩散斜面,二扩散斜面上分别设有所述发光二极管光源。
6.如权利要求1所述的光引擎,其特征在于:所述吸热面为弧形。
7.如权利要求1所述的光引擎,其特征在于:所述发光二极管光源包括一导热基板以及设置在导热基板上的具有发光二极管芯片的发光体,发光二极管光源由导热基板与吸热面热传导性连接。
8.如权利要求7所述的光引擎,其特征在于:所述吸热面与导热基板之间设有一热管。
9.如权利要求1所述的光引擎,其特征在于:所述散热基体靠近光源的吸热面上分别沿纵向间隔设置气孔。
10.如权利要求1所述的光引擎,其特征在于:所述散热基体纵向之两端分别固定有一侧盖,该侧盖密封出光通道的纵向两端,该侧盖上设有电线通孔。
11.一种发光二极管灯具,其特征在于:该灯具包括如权利要求1至10项中任意一项所述的光引擎;一光学部,包括该光引擎的发光二极管光源及一出光通道,用以提供所需的照明亮度与发光特性及对发光二极管光源保护;一电气部,包括至少一电路板,用以提供发光二极管光源所需要的驱动电源、控制电路及电源管理。
12.如权利要求11所述的发光二极管灯具,其特征在于:所述出光窗口处的散热基体两侧端缘向外翻折形成并纵向延伸有托架,该光学部还包括一与散热基体的形状相匹配的透明导光罩,该导光罩外凸方式纵向延伸固定至散热基体的出光窗口处,与腔体组合形成光学部的出光通道。
13.如权利要求12所述的发光二极管灯具,其特征在于:所述导光罩靠近散热基体的两侧边缘分别沿纵向间隔设置气孔。
14.如权利要求11所述的发光二极管灯具,其特征在于:该灯具还包括一灯盘,该灯盘包括一内凹形成有一容置空间的罩体,该电气部及散热部均设置于该罩体上。
15.如权利要求14所述的发光二极管灯具,其特征在于:所述出光窗口处的散热基体靠近两侧端缘的位置向外凸伸设有纵向延伸的凸缘,该罩体内凹形成一背板,该背板上设有至少一长条状开孔,该散热部通过该凸缘固定至罩体上并使散热部的具有鳍片侧突出于罩体背面,而具有出光窗口侧位于罩体正面并容设于容置空间内。
16.如权利要求15所述的发光二极管灯具,其特征在于:该灯盘还包括一配光罩,该配光罩包括呈框型的本体,该本体内对应于每个罩体的开孔两边缘位置远离开孔方向向外倾斜延伸形成二锥面及一透空区,以便将光源射出的光线作照明环境的配光,在配光罩上沿该开孔的横向间隔设置数个遮光板,以防止眩光。
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US20100177514A1 (en) | 2010-07-15 |
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