CN109058808A - 一种具有光学助学光源的台灯 - Google Patents
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Abstract
本发明涉及一种具有光学助学光源的台灯,包括主光源和光学助学光源,所述光学助学光源发出的波长范围为570‑610nm。主光源为白光光源,光学助学光源发出的光谱波长范围为570‑610nm,呈现出来的颜色是青绿黄橙混色,能提高台灯主光源的显色指数,使被照明物显示更接近自然色,此光谱波段是人眼睛最能接受,视疲劳最少,看得最楚的波段的光波;此波段范围内的光是有害蚊虫的厌恶光,蚊子具有固有的逆光生物特性,它怕这种光,见了就朝相反方向逃跑,即主动地远离,从而具有驱蚊效果,不论环境如何,随时驱蚊,能耗低可长期使用,且属于物理驱蚊,不采用化学药品,不会产生难闻的气味,对人体无任何伤害,具有光学助学功能。
Description
技术领域
本发明涉及照明技术领域,尤其涉及一种具有光学助学光源的台灯。
背景技术
现有技术中普通台灯的光源部分大致可分为以下几类,1、可调色温的台灯,内置暖光源和冷光源这两组光源,调色温时,色温在暖光到冷光之间变化;2:有小夜灯功能的台灯,台灯具有主光源和一组提供辅助夜灯功能的小亮度光源;3、有RGB情景功能的台灯,内置主光源和RGB光源,RGB光源即红绿蓝,实现变色功能,但均不具有驱蚊助学功能。
发明内容
本发明的目的在于提供一种可以提高主光源的显示指数、同时具有驱蚊助学功能的台灯。
本发明提供的技术方案为:一种具有光学助学光源的台灯,包括主光源和光学助学光源,所述光学助学光源发出的波长范围为570-610nm。
其中,所述台灯还包括控制电路,控制电路包括两组光源驱动电路,一组用于驱动主光源,一组用于驱动光学助学光源。
其中,所述控制电路包括整流滤波电路、恒压控制电路和程序控制器,所述恒压控制电路提供5V辅助电源给程序控制器和提供恒压电源给两组光源驱动电路。
本发明的有益效果为:所述具有光学助学光源的台灯包括主光源和光学助学光源,主光源为白光光源,光学助学光源发出的光谱波长范围为570-610nm,呈现出来的颜色是青绿黄橙混色,能提高台灯主光源的显色指数,使被照明物显示更接近自然色,此光谱波段是人眼睛最能接受,视疲劳最少,看得最楚的波段的光波;此波段范围内的光是有害蚊虫的厌恶光,蚊子具有固有的逆光生物特性,它怕这种光,见了就朝相反方向逃跑,即主动地远离,从而具有驱蚊效果,不论环境如何,随时驱蚊,能耗低可长期使用,且属于物理驱蚊,不采用化学药品,不会产生难闻的气味,对人体无任何伤害,具有光学助学功能。
附图说明
图1是本发明所述具有光学助学光源的台灯的电路原理图;
图2是本发明所述光学助学光源的结构示意图;
图3是本发明所述光学助学光源的光谱分布图。
其中,1、LED支架;2、LED芯片;3、荧光激发层;4、LED灯珠盖板;5、金线。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白,以下结合附图及实施例,对本发明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仅用以解释本发明,并不用于限定本发明。
作为本发明所述具有光学助学光源的台灯的实施例,如图1至图3所示,包括主光源和光学助学光源,所述光学助学光源发出的波长范围为570-610nm。
所述具有光学助学光源的台灯包括主光源和光学助学光源,主光源为白光光源,光学助学光源发出的光谱波长范围为570-610nm,呈现出来的颜色是青绿黄橙混色,能提高台灯主光源的显色指数,使被照明物显示更接近自然色,此光谱波段是人眼睛最能接受,视疲劳最少,看得最楚的波段的光波;此波段范围内的光是有害蚊虫的厌恶光,蚊子具有固有的逆光生物特性,它怕这种光,见了就朝相反方向逃跑,即主动地远离,从而具有驱蚊效果,不论环境如何,随时驱蚊,能耗低可长期使用,且属于物理驱蚊,不采用化学药品,不会产生难闻的气味,对人体无任何伤害,具有光学助学功能。
在本实施例中,所述台灯还包括控制电路,控制电路包括两组光源驱动电路,一组用于驱动主光源,一组用于驱动光学助学光源。所述控制电路包括整流滤波电路、恒压控制电路和程序控制器,所述恒压控制电路提供5V辅助电源给程序控制器和提供恒压电源给两组光源驱动电路。主光源和光学助学光源都可以单独打开和关闭。
在本实施例中,所述光学助学光源为LED灯珠,包括LED支架、LED芯片、覆盖LED芯片的荧光激发层和覆盖所述荧光激发层的LED灯珠盖板。
在本实施例中,所述LED灯珠内设有二个LED芯片,两个LED芯片通过金线串接,单颗lED芯片的电压在2.0-2.2V之间。所述LED支架上设有绝缘胶,LED芯片背面电极上涂有银胶,LED芯片通过银胶固定在所述绝缘胶处。在其它的实现方式中,所述LED灯珠也可以采用单芯片方案,即只采用一个LED芯片,也是可行的。
在本实施例中,所述LED灯珠盖板为亚克力板,透光度好,也可以采用玻璃板。
在本实施例中,所述荧光激发层的配比比例为:红色荧光粉0.5份,黄色荧光粉0.25份,调粉胶0.15份,硅胶0.1份,以上均为重量份。如图3所示,用光学仪器测量可发现此光源的光谱的波长都落在所述的范围内,其它成份的光占比很少。
所述黄色荧光粉是黄色掺铈离子(Ce3+)激活的钇铝石榴石(Cerium-dopedYttrium Aluminum Garnet,简称YAG:Ce3+)荧光粉,采用用高温固相法在还原气氛中1600℃下烧结制得;红色荧光粉,采用硫化锶钙利用固相法合成LED用红色荧光粉。
所述LED灯珠的制造方法,包括以下步骤:
步骤S1:将LED芯片封装在LED支架上;
步骤S2:将LED荧光激发层覆盖在LED芯片上;
步骤S3:将LED灯珠盖板覆盖住所述荧光激发层,并固定在所述光源支架上。
其中,步骤S1包括以下子步骤:
步骤S11:在LED支架上的相应位置点上绝缘胶;
步骤S12:在LED芯片的背面电极上涂上银胶,然后将背部有银胶的LED芯片安装在LED支架上;
步骤S13:用金线将LED芯片与LED电极相连接;
步骤S14:通过点胶工艺,用环氧树脂将LED芯片和金线保护起来。
在本实施例中,在LED灯珠盖板的内表面上涂覆一层荧光粉,形成荧光激发层,是非常适合的低成本方案。但是采用这种涂敷方法的LED,由于提高输出功率使得 LED芯片温度增加,由于荧光粉紧贴LED芯片发热源,温升导致荧光粉性能劣化,产生光色参数衰变。作为另一种替代方案,作发明LED灯珠盖板采用玻璃材质,并把荧光粉均匀分布烧结在玻璃中,形成荧光玻璃,采用的玻璃基质为:BaO-Na2O- B2O3-SiO2-Al2O3。可以避免把荧光粉直接涂覆在LED芯片表面,造成的荧光粉和有机树脂或硅胶混合体衰变的缺点,而且荧光玻璃薄片利用成熟的玻璃加工技术,易于加工成各种形状,便于调整光强分布、色温分布和显色性指标,提高批量生产中色温及其它指标的一致性和产品的成品率。玻璃基质为0.85份,黄色荧光粉为0.1份,红色荧光粉为0.05份,玻璃基质的具体配比为BaO为0.15份,Na2O为0.1份,B2O3为0.45份,SiO2为0.1份, Al2O3为0.2份,以上均为重量份。最终LED灯珠的出光效果基于与图3中显示的一致,光谱比较集中,其它成份的光占比很少。
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之内所作的任何修改、等同替换和改进等,均应包含在本发明的保护范围之内。
Claims (3)
1.一种具有光学助学光源的台灯,其特征在于,包括主光源和光学助学光源,所述光学助学光源发出的波长范围为570-610nm。
2.根据权利要求1所述的台灯,其特征在于,所述台灯还包括控制电路,控制电路包括两组光源驱动电路,一组用于驱动主光源,一组用于驱动光学助学光源。
3.根据权利要求2所述的台灯,其特征在于,所述控制电路包括整流滤波电路、恒压控制电路和程序控制器,所述恒压控制电路提供5V辅助电源给程序控制器和提供恒压电源给两组光源驱动电路。
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