CN207969020U - 低压灯带 - Google Patents

低压灯带 Download PDF

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CN207969020U
CN207969020U CN201820201711.9U CN201820201711U CN207969020U CN 207969020 U CN207969020 U CN 207969020U CN 201820201711 U CN201820201711 U CN 201820201711U CN 207969020 U CN207969020 U CN 207969020U
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李小平
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Guangzhou Oml Technology Co Ltd
Guangdong OML Technology Co Ltd
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Priority to GB1901426.5A priority patent/GB2571834B/en
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Priority to DE202019100628.5U priority patent/DE202019100628U1/de
Priority to FR1901095A priority patent/FR3077618B3/fr
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Abstract

本实用新型公开了一种低压灯带，包括灯带本体及至少一组封装于所述灯带本体上的发光单元；每一发光单元包括恒流电路及LED灯串，所述恒流电路的输入端连接电源，所述恒流电路的输出端连接LED灯串。采用本实用新型，通过恒流电路实现了LED灯串的恒流供电，从而保证每一发光单元中LED灯串的电流一致，首尾亮度均匀，并实现了低压灯带的超长连接。

Description

低压灯带
技术领域
本实用新型涉及LED技术领域，尤其涉及一种低压灯带。
背景技术
LED灯带是指把LED组装在带状的FPC(柔性线路板)或PCB硬板上，因其产品形状象一条带子一样而得名。因为使用寿命长(一般正常寿命在8～10万小时)，又非常节能和绿色环保而逐渐在各种装饰行业中崭露头角。
LED灯带主要包括高压灯带及低压灯带。其中，高压灯带直接接220V接市电，光衰较为严重；而低压灯带一般为12V或24V，压降不稳定，单端供电时，首尾压差大，按使用电压供电时，首尾亮度差异明显，发光极不均匀，随着灯带的长度增加，亮度会越来越低，因此，目前市面上低压灯带的连接长度不能大于5米，头尾供电不能大于10米，局限性很强，并不能满足用户的实际需求。
因此，研发一种亮度均匀的超长低压灯带已成LED技术领域为亟待解决的问题。
实用新型内容
本实用新型所要解决的技术问题在于，提供一种结构简单、亮度均匀、电流一致的低压灯带，可实现低压灯带恒流供电及超长连接。
为了解决上述技术问题，本实用新型提供了一种低压灯带，包括灯带本体及至少一组封装于所述灯带本体上的发光单元；每一发光单元包括恒流电路及LED灯串，所述恒流电路的输入端连接电源，所述恒流电路的输出端连接LED灯串。
作为上述方案的改进，所述恒流电路包括第一电阻组、第二电阻组、第一三极管及第二三极管；所述第一三极管的发射极与第一电阻组的一端连接，所述第一三极管的集电极与LED灯串的一端连接，所述第一三极管的基极通过第二电阻组与LED灯串的另一端连接；所述第二三极管的发射极与第一电阻组的另一端连接，所述第二三极管的基极与第一电阻组的一端连接，所述第二三极管的集电极与第一三级管的基极连接。
作为上述方案的改进，所述恒流电路包括第一电阻组、第二电阻组、第一NPN型三极管及第二NPN型三极管；所述第一NPN型三极管的发射极通过第一电阻组接地，所述第一NPN型三极管的集电极通过LED灯串连接电源，所述第一NPN型三极管的基极通过第二电阻组连接电源；所述第二NPN型三极管的发射极接地，所述第二NPN型三极管的基极通过第一电阻组接地，所述第二NPN型三极管的集电极通过第二电阻组连接电源。
作为上述方案的改进，所述恒流电路包括第一电阻组、第二电阻组、第一PNP型三极管及第二PNP型三极管；所述第一PNP型三极管的发射极通过第一电阻组连接电源，所述第一PNP型三极管的集电极通过LED灯串接地，所述第一PNP型三极管的基极通过第二电阻组接地；所述第二PNP型三极管的发射极连接电源，所述第二PNP型三极管的基极通过第一电阻组连接电源，所述第二PNP型三极管的集电极通过第二电阻组接地。
作为上述方案的改进，所述第一电阻组及第二电阻组至少包括一个电阻。
作为上述方案的改进，所述LED灯串包括至少一个LED灯珠。
作为上述方案的改进，所述LED灯珠内至少封装有一个LED芯片。
作为上述方案的改进，所述灯带本体为裸板灯带、硅胶灯带或PVC灯带。
作为上述方案的改进，所述低压灯带的长度至少为10m。
实施本实用新型的有益效果在于：
本实用新型低压灯带中引入了结构简单的恒流电路，实现了LED灯串的恒流供电，从而保证每一发光单元中LED灯串的电流一致，首尾亮度均匀。同时，由于在恒流电路的作用下，每一发光单元的亮度一致，使得用户可根据需求添加多个发光单元或LED灯串，实现低压灯带的超长连接，从而构建超长低压灯带，适用性强。
附图说明
图1是本实用新型低压灯带的第一实施例结构示意图；
图2是本实用新型低压灯带的第二实施例结构示意图。
具体实施方式
为使本实用新型的目的、技术方案和优点更加清楚，下面将结合附图对本实用新型作进一步地详细描述。仅此声明，本发明在文中出现或即将出现的上、下、左、右、前、后、内、外等方位用词，仅以本发明的附图为基准，其并不是对本发明的具体限定。
参见图1及图2，图1及图2显示了本实用新型低压灯带的具体地结构，其包括灯带本体1及至少一组封装于所述灯带本体1上的发光单元2；每一发光单元2包括恒流电路3及LED灯串，所述恒流电路3的输入端连接电源，所述恒流电路3的输出端连接LED灯串。
与现有技术不同的是，本实用新型低压灯带中引入恒流电路3，实现了LED灯串的恒流供电，从而保证每一发光单元2中LED灯串的电流一致，首尾亮度均匀。
需要说明的是，本实用新型中每一发光单元2相互独立，用户可根据实际需求设置一个或多个发光单元2，发光单元2依次排列于灯带本体1上，形成条状结构。由于在恒流电路的作用下，每一发光单元2的亮度一致，使得用户可根据需求添加多个发光单元2，实现低压灯带的超长连接。优选地，所述低压灯带的长度至少为10m(单端供电大于10米)。
相应地，所述LED灯串包括至少一个LED灯珠，即用户可根据实际需求设置一个LED灯珠或串联多个LED灯珠，灵活性强。
所述LED灯珠内至少封装有一个LED芯片，即用户可根据实现需求选择单芯LED灯珠(即封装一个LED芯片)、两芯LED灯珠(即封装两个LED芯片)或三芯LED灯珠(即封装三个LED芯片)。
所述灯带本体1为裸板灯带、硅胶灯带或PVC灯带，但不以此为限制，只要可用于封装发光单元即可；同时，本实用新型还可以采用打并联工艺制成。
具体地，所述恒流电路3包括第一电阻组、第二电阻组、第一三极管及第二三极管；所述第一三极管的发射极与第一电阻组的一端连接，所述第一三极管的集电极与LED灯串的一端连接，所述第一三极管的基极通过第二电阻组与LED灯串的另一端连接；所述第二三极管的发射极与第一电阻组的另一端连接，所述第二三极管的基极与第一电阻组的一端连接，所述第二三极管的集电极与第一三级管的基极连接。
通电后，在第一电阻组、第二电阻组、第一三极管及第二三极管的相互作用下，恒流电路输出稳定的恒定电流，实现了LED灯串的恒流供电，从而保证每一发光单元中LED灯串的电流一致，首尾亮度均匀。其中，所述第一电阻组及第二电阻组至少包括一个电阻，即第一电阻组及第二电阻组可以为一个电阻或多个相互串联和/或并联电阻，灵活性强。
参见图1，图1显示了本实用新型低压灯带的第一实施例，所述恒流电路3包括第一电阻组、第二电阻组、第一NPN型三极管Q1及第二NPN型三极管Q2，所述第一NPN型三极管Q1的发射极通过第一电阻组接地，所述第一NPN型三极管Q1的集电极通过LED灯串连接电源，所述第一NPN型三极管Q1的基极通过第二电阻组连接电源；所述第二NPN型三极管Q2的发射极接地，所述第二NPN型三极管Q2的基极通过第一电阻组接地，所述第二NPN型三极管Q2的集电极通过第二电阻组连接电源。
通电后，第一NPN型三极管Q1先导通，LED灯串点亮，随着第一NPN型三极管Q1的集电极电流Ic增大，电流流过第一电阻R1，当第一电阻R1上的分压U＝R1×Ic＝0.7V时，第二NPN型三极管Q2导通，第二NPN型三极管Q2导通后将第一NPN型三极管Q1的基极拉低，此时第一NPN型三极管Q1截止，第二NPN型三极管Q2截止(因为第一NPN型三极管Q1截止后，第一电阻R1上就没有电压，第二NPN型三极管Q2就截止)，随后，第一NPN型三极管Q1的基极电压又被拉高，如此一来，LED灯串直路的电流就被控制在I＝0.7/R1。相应地，还可以通过改变第一电阻R1及第二电阻R2的组织来调整恒流电路输出的恒流值。
参见图2，图2显示了本实用新型低压灯带的第二实施例，与图1所述的第一实施例不同的是，本实施例中所述恒流电路3包括第一电阻组、第二电阻组、第一PNP型三极管Q1及第二PNP型三极管Q2，所述第一PNP型三极管Q1的发射极通过第一电阻组连接电源，所述第一PNP型三极管Q1的集电极通过LED灯串接地，所述第一PNP型三极管Q1的基极通过第二电阻组接地；所述第二PNP型三极管Q2的发射极连接电源，所述第二PNP型三极管Q2的基极通过第一电阻组连接电源，所述第二PNP型三极管Q2的集电极通过第二电阻组接地。
通电后，第一PNP型三极管Q1先导通，LED灯串点亮，随着第一PNP型三极管Q1的集电极电流Ic增大，电流流过第一电阻R1，当第一电阻R1上的分压U＝R1×Ic＝0.7V时，第二PNP型三极管Q2导通，第二PNP型三极管Q2导通后将第一PNP型三极管Q1的基极拉低，此时第一PNP型三极管Q1截止，第二PNP型三极管Q2截止(因为第一PNP型三极管Q1截止后，第一电阻R1上就没有电压，第二PNP型三极管Q2就截止)，随后，第一PNP型三极管Q1的基极电压又被拉高，如此一来，LED灯串直路的电流就被控制在I＝0.7/R1。相应地，还可以通过改变第一电阻R1及第二电阻R2的组织来调整恒流电路输出的恒流值。
由上可知，本实用新型低压灯带中引入了结构简单的恒流电路3，实现了LED灯串的恒流供电，从而保证每一发光单元2中LED灯串的电流一致，首尾亮度均匀，并可实现低压灯带的超长连接，构建超长低压灯带。
以上所述是本实用新型的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本实用新型的保护范围。

Claims (8)

1.一种低压灯带，其特征在于，包括灯带本体及至少一组封装于所述灯带本体上的发光单元；
每一发光单元包括恒流电路及LED灯串，所述恒流电路的输入端连接电源，所述恒流电路的输出端连接LED灯串；
所述恒流电路包括第一电阻组、第二电阻组、第一三极管及第二三极管；所述第一三极管的发射极与第一电阻组的一端连接，所述第一三极管的集电极与LED灯串的一端连接，所述第一三极管的基极通过第二电阻组与LED灯串的另一端连接；所述第二三极管的发射极与第一电阻组的另一端连接，所述第二三极管的基极与第一电阻组的一端连接，所述第二三极管的集电极与第一三级管的基极连接。
2.如权利要求1所述的低压灯带，其特征在于，所述恒流电路包括第一电阻组、第二电阻组、第一NPN型三极管及第二NPN型三极管；
所述第一NPN型三极管的发射极通过第一电阻组接地，所述第一NPN型三极管的集电极通过LED灯串连接电源，所述第一NPN型三极管的基极通过第二电阻组连接电源；
所述第二NPN型三极管的发射极接地，所述第二NPN型三极管的基极通过第一电阻组接地，所述第二NPN型三极管的集电极通过第二电阻组连接电源。
3.如权利要求1所述的低压灯带，其特征在于，所述恒流电路包括第一电阻组、第二电阻组、第一PNP型三极管及第二PNP型三极管；
所述第一PNP型三极管的发射极通过第一电阻组连接电源，所述第一PNP型三极管的集电极通过LED灯串接地，所述第一PNP型三极管的基极通过第二电阻组接地；
所述第二PNP型三极管的发射极连接电源，所述第二PNP型三极管的基极通过第一电阻组连接电源，所述第二PNP型三极管的集电极通过第二电阻组接地。
4.如权利要求1所述的低压灯带，其特征在于，所述第一电阻组及第二电阻组至少包括一个电阻。
5.如权利要求1所述的低压灯带，其特征在于，所述LED灯串包括至少一个LED灯珠。
6.如权利要求5所述的低压灯带，其特征在于，所述LED灯珠内至少封装有一个LED芯片。
7.如权利要求1所述的低压灯带，其特征在于，所述灯带本体为裸板灯带、硅胶灯带或PVC灯带。
8.如权利要求1所述的低压灯带，其特征在于，所述低压灯带的长度至少为10m。
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CN113905484A (zh) * 2021-10-12 2022-01-07 恒亦明（重庆）科技有限公司 一种低压led灯带

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CN113905484A (zh) * 2021-10-12 2022-01-07 恒亦明（重庆）科技有限公司 一种低压led灯带

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