The utility model is suitable for the field of lighting technology. The utility model discloses an LED light strip with a built-in constant current drive chip, the LED light strip includes an LED circuit board, a constant voltage power supply, a plurality of LED beads with a built-in constant current chip and a plurality of groups of LED lighting units, a plurality of LED beads with a built-in constant current chip and a plurality of groups of LED lighting units are welded on the LED circuit board, a plurality of LED beads with a built-in constant current chip are connected with a constant voltage power supply, and a plurality of LED beads with a built-in constant current chip are connected with a constant voltage power supply Led beads with built-in constant current chips are connected in series with a plurality of LED lighting units which are composed of a plurality of LED lights in series. Through the use of LED lamp beads with built-in constant current driver chip, it can effectively reduce the impact of voltage attenuation caused by line growth, stabilize the current of LED in each group of lines, especially the current of LED lamp group at the back of the line, and finally maintain the uniform brightness of each group of lights in the connecting line, so as to realize the constant current of over length of LED lamp strip, in which the LED lamp strip is simple and easy to use It has the advantages of good effect, wide application range, low cost and over temperature protection.
【技术实现步骤摘要】
一种内置恒流驱动芯片的LED灯条
本技术涉及照明
,特别涉及一种内置恒流驱动芯片的LED灯条。
技术介绍
LED作为绿色照明光源已经十分广泛应用于我们日常生活当中,适用于家居装饰,路径指示,广告标志,建筑物大厦楼阁、桥梁、公园广场装饰,节日装饰,活动会场布景,酒吧,KTV等多种场合下的照明需求。为确保LED正常工作,不仅需要选配好合适的驱动电源,LED作为负载的连接方式也同样重要。根据LED的结构原理及工作特性,LED实际上是一个电流驱动的低电压单向导通器件,一般使用时不能直接接到电源上,通常使用电阻调整线路中流通的电流。现有技术中常采用24V恒压电源,线路并联多组,每组6个LED灯珠串联一个电阻,电阻用来限定每组的电流。此线路结构简单,成本相对较低,但对电流的稳定度不高,随着LED灯条增长,因为线路中存在阻抗,电压会产生衰减,越靠后的LED灯组所得到的电压越小,随之电流降低,造成LED亮度降低,导致连接的LED灯条首尾亮度不一致;并且电阻也是在线路之中也需要消耗一部分电能,降低了用电效率。为了降低电压衰减造成的LED首尾亮度不一致的影响,现有技术中多采用三极管和电阻实现灯条恒流。利用三极管相对稳定的be电压作为基准,通过调节电阻阻值实现对LED电路的电流控制。流通LED电路电流为:I=Vbe/R。此方案对于LED线路的恒流效果还行,但控制的电流精度不够高。在实际应用过程中,电流控制的精度,往往取决于三极管与电阻的选择,提高了生产难度;并且连接线路相对复杂,占用较大的空间,有时候需要更宽的LED ...
【技术保护点】
1.一种内置恒流驱动芯片的LED灯条,其特征在于,包括LED线路板、恒压电源、复数个内置恒流芯片的LED灯珠和复数组LED照明单元,所述复数个内置恒流芯片的LED灯珠与复数组LED照明单元分别焊接在LED线路板上,所述复数个内置有恒流芯片的LED灯珠与恒压电源连接,所述复数个内置恒流芯片的LED灯珠分别与所述复数组LED照明单元串联,所述复数组LED照明单元由多个LED灯串联组成,且每一组LED照明单元分别并联。/n
【技术特征摘要】
1.一种内置恒流驱动芯片的LED灯条,其特征在于,包括LED线路板、恒压电源、复数个内置恒流芯片的LED灯珠和复数组LED照明单元,所述复数个内置恒流芯片的LED灯珠与复数组LED照明单元分别焊接在LED线路板上,所述复数个内置有恒流芯片的LED灯珠与恒压电源连接,所述复数个内置恒流芯片的LED灯珠分别与所述复数组LED照明单元串联,所述复数组LED照明单元由多个LED灯串联组成,且每一组LED照明单元分别并联。
2.根据权利要求1所述的内置恒流驱动芯片的LED灯条,其特征在于,所述恒压电源输出恒定电压24V。
3.根据权利要求2所述的内置恒流驱动芯片的L...
【专利技术属性】
技术研发人员:吴荣伟,
申请(专利权)人:深圳市旻杰光电科技有限公司,
类型:新型
国别省市:广东;44
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