CN105702669B - 一种植物生长专用宽波段蓝光led - Google Patents
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Abstract
本发明公开一种植物生长专用宽波段蓝光LED,包括LED支架,设置在LED支架的碗杯内的LED芯片,以及用于封装LED芯片的硅胶,LED芯片至少包括440~445nm波段芯片与460~465nm波段芯片;硅胶中混合有能吸收蓝光能量会激发出480~490nm波段光的荧光粉。本发明具有的有益效果:通电后有两个芯片会各自激发出波长440nm和460nm的蓝光,此时荧光粉会吸收波长440nm与460nm的蓝光并激发出波长490nm带宽15nm的蓝绿光,此时则涵盖了植物所需的三个波长段组合成植物所需的宽波段蓝光,如此则避开需要订制的485nm芯片;此外,调整荧光粉浓度还可以控制480~500nm带宽的光强度达到植物所需的最佳蓝光。
Description
技术领域
本发明涉及一种植物生长专用宽波段蓝光LED,属于照明照具技术领域。
背景技术
30年前NASA火星计划提出植物人工隔离环境栽培于外太空成长的可能性为植物工厂最早的概念,植物工厂是目前植物栽培领域最为先进技术,是栽培模式发展的最高境界,植物工厂内补光系统是最为重要的系统,它是构成植物生物量的一种主要能源,没有光照,植物光合作用就不能正常进行,一切代谢与活动所需的能量就不能供给,植物的正常生长就不能进行,根据科学家对光照的多年研究表明,植物的光合作用单元叶绿素对于特定波段的光源有嗜好性,如红光、蓝光、远红光,除了这些光外,其它光质的光照利用率转换率并不高,有时反而有不良影响,为了使植物工厂内的植物有更高的光合作用效率,一般选择红蓝光为主的人工补光系统,但是LED的单一波长窄频谱却无法发挥全面性故本发明则为制造一宽频谱蓝光。
目前蓝光一般所使用波段为450~470nm,为目前常规芯片,一般均采用2835,或5630或5050的贴片封装型态,其只有单一波长输出,对植物来说所需的最佳波长的蓝光却有三个,分别为440nm、460nm、与485nm,因此无法完全满足需求,LED蓝光芯片一般半波宽只有5~10nm,故440~470nm都容易取得但485nm就变得很困难了,除非自外延段就订制才能制作485nm的芯片,但是价格与交期都不易控制。
发明内容
本发明的目的在于克服现有技术中的不足,提供一种植物生长专用宽波段蓝光LED,能够产生三种波段的蓝光以满足植物生长过程中的照射要求。
为解决现有技术问题,本发明采用的技术方案:一种植物生长专用宽波段蓝光LED,包括LED支架,设置在LED支架的碗杯内的LED芯片,以及用于封装LED芯片的硅胶, LED芯片至少包括440~445nm波段芯片与460~465nm波段芯片;硅胶中混合有能吸收蓝光能量激发出480~490nm波段光的荧光粉。
优选的,LED芯片通过固晶胶黏合于LED支架的碗杯内。
优选的,LED芯片以并联或串联的方式做成双晶或多晶LED。
优选的,荧光粉为氮化物荧光粉。
优选的,LED芯片的数量为两个,分别为440nm芯片与460nm芯片。
优选的,还包括485nm芯片。
本发明具有的有益效果:通电后有两个芯片会各自发出波长440nm和460nm的蓝光,此时荧光粉会吸收波长440nm与460nm的蓝光并激发出波长490nm带宽15nm的蓝绿光,此时则涵盖了植物所需的三个波长段组合成植物所需的宽波段蓝光,如此则避开需要订制的485nm芯片;此外,调整荧光粉浓度还可以控制480~500nm带宽的光强度达到植物所需的最佳蓝光。
附图说明
图1是本发明的结构示意图。
附图标记:1、LED支架;2、LED芯片;3、硅胶;4、荧光粉。
具体实施方式
下面结合附图对本发明作进一步描述。以下实施例仅用于更加清楚地说明本发明的技术方案,而不能以此来限制本发明的保护范围。
实施例一
如图1所示,一种植物生长专用宽波段蓝光LED,包括LED支架1,通过固晶胶黏合于LED支架的碗杯内的LED芯片,以及用于封装LED芯片2的硅胶3。其中LED芯片包括范围在440~445nm波段芯片与460~465nm波段芯片,优选440nm和460nm波段的蓝光芯片。硅胶中混合有能吸收蓝光能量激发出480~490nm波段蓝光的荧光粉4,即该荧光粉的发射波段为480~490nm。
LED芯片以并联或串联的方式做成双晶LED,荧光粉为氮化物荧光粉。
本发明的原理为:
通电后因为有两个芯片会各自发出波长440nm和460nm的蓝光,此时荧光粉会吸收波长440nm与460nm的蓝光并激发出波长490nm带宽15nm的蓝绿光,此时则涵盖了植物所需的三个波长段组合成植物所需的宽波段蓝光。如此则避开需要订制的485nm芯片,而调整荧光粉浓度则可以控制480~500nm带宽的光强度达到植物所需的最佳蓝光。
实施例二
与实施例一不同的是,本实施例中,LED芯片为三个,还包括一个485nm芯片,从而做成三晶LED。虽然该实施例可以得到相同的效果,但是成本略高,还存在进一步优化的调整的可能。
本发明中,440~445nm波段芯片与460~465nm波段芯片中的数字指的是芯片的规格,如440nm芯片、445nm芯片、460nm芯片等,故不再做赘述。
以上所述仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明技术原理的前提下,还可以做出若干改进和变形,这些改进和变形也应视为本发明的保护范围。
Claims (6)
1.一种植物生长专用宽波段蓝光LED,包括LED支架,设置在LED支架的碗杯内的LED芯片,以及用于封装LED芯片的硅胶,其特征在于:LED芯片至少包括440~445nm波段芯片与460~465nm波段芯片;硅胶中混合有能吸收蓝光能量激发出480~490nm波段光的荧光粉。
2.根据权利要求1所述的一种植物生长专用宽波段蓝光LED,其特征在于,LED芯片通过固晶胶黏合于LED支架的碗杯内。
3.根据权利要求1所述的一种植物生长专用宽波段蓝光LED,其特征在于,LED芯片以并联或串联的方式做成双晶或多晶LED。
4.根据权利要求1所述的一种植物生长专用宽波段蓝光LED,其特征在于,荧光粉为氮化物荧光粉。
5.根据权利要求1所述的一种植物生长专用宽波段蓝光LED,其特征在于,LED芯片的数量为两个,分别为440nm芯片与460nm芯片。
6.根据权利要求1至5任一所述的一种植物生长专用宽波段蓝光LED,其特征在于,还包括485nm芯片。
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