CN207283866U - Led直管灯 - Google Patents

Led直管灯 Download PDF

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Publication number
CN207283866U
CN207283866U CN201720874792.4U CN201720874792U CN207283866U CN 207283866 U CN207283866 U CN 207283866U CN 201720874792 U CN201720874792 U CN 201720874792U CN 207283866 U CN207283866 U CN 207283866U
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contact pin
switch element
rectification
module
led straight
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曹胜军
蒲纪忠
赵国松
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CH Lighting Technology Co Ltd
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CH Lighting Technology Co Ltd
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/20—Responsive to malfunctions or to light source life; for protection
    • H05B47/26—Circuit arrangements for protecting against earth faults
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/02—Details
    • H05B33/06—Electrode terminals
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/357—Driver circuits specially adapted for retrofit LED light sources
    • H05B45/3578—Emulating the electrical or functional characteristics of discharge lamps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/27—Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
    • F21K9/272—Details of end parts, i.e. the parts that connect the light source to a fitting; Arrangement of components within end parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/27—Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
    • F21K9/278—Arrangement or mounting of circuit elements integrated in the light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V25/00—Safety devices structurally associated with lighting devices
    • F21V25/02—Safety devices structurally associated with lighting devices coming into action when lighting device is disturbed, dismounted, or broken
    • F21V25/04—Safety devices structurally associated with lighting devices coming into action when lighting device is disturbed, dismounted, or broken breaking the electric circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • General Engineering & Computer Science (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

本实用新型涉及一种LED直管灯，属于照明技术领域。LED直管灯包括灯管、设于灯管两端且具有插针的灯头、分别与两端的插针耦接的第一整流单元和第二整流单元、滤波单元、以及设于整流单元和滤波单元之间的开关单元，开关单元具有与其中一端插针耦接或两端插针均耦接的采样端，当LED直管灯一端插针接入市电时，若另一端插针的外接阻抗大于等于设定值，则开关单元断开，若另一端插针的外接阻抗小于设定值，则开关单元闭合。通过对另一端插针的外接阻抗进行测量，以判断该端插针是否正确插入灯头座中，避免人体与该端插针接触而发生触电风险，有效提高LED直管灯的使用安全。

Description

LED直管灯
技术领域
本发明涉及LED照明技术领域，尤其涉及一种LED直管灯。
背景技术
因具有节能、环保等优点，LED灯具正逐渐替代的传统荧光灯具。LED直管灯一般包括灯管、灯头以及内部的驱动电路，其中驱动电路的功能主要是将输入的交流电转换成恒定的直流电。传统的荧光灯管均是采用双端进电，为了适应传动荧光灯管的安装支架，现有的LED灯管也采用相应的双端进电结构。如采用双端进电结构，当其中一端安装到位通电后，如果操作人员触摸到另一端，则有触电风险。
为了规避上述风险，CN106224805A一种自带开关的灯头，包括筒体，其一端敞开用于套装灯管，另一端封闭并设置有插脚，插脚与灯具的驱动电源电连接；所述灯头内安装有控制所述驱动电源通电或断电的微动开关；设置活动的并用于触动所述微动开关的按压键，该按压键由所述筒体封闭的一端凸出。该专利申请通过机械开关控制灯管导通或断开，结构复杂，而且长期使用后由于开关弹性失效，易导致误触发。
发明内容
本发明提供了一种LED直管灯，解决传统机械开关结构复杂以及易误触发的问题。
一种LED直管灯，包括灯管、设于灯管两端且具有插针的灯头、分别与两端的插针耦接的第一整流单元和第二整流单元、滤波单元、以及设于整流单元和滤波单元之间的开关单元，开关单元具有与其中一端插针耦接或两端插针均耦接的采样端，当LED直管灯一端插针接入市电时，若另一端插针的外接阻抗大于等于设定值，则开关单元断开，若另一端插针的外接阻抗小于设定值，则开关单元闭合。
在工作过程中，当出现一端插针正确插入灯头座，而另一端插针未正确接入对应灯头座，此时另一端的外接阻抗为无穷大；而未正确接入的另一端插针与人体接触时，此时外接阻抗为人体阻抗；即当检测到另一端外接阻抗大于等于预定值时，通过开关单元断开而切断整流单元与滤波单元间的连通，从而截止市电流经整个灯管，以避免人体触碰另一端插针而产生危险；当检测到另一端外接阻抗小于预定值时，通过开关单元闭合而连通整流单元与滤波单元，从而使灯管正常工作；从而可通过对另一端插针的外接阻抗进行检测而判断整个LED直管灯是否正确安装到位，且能够防止另一端插针与人体接触而对人体造成损害；采用电路检测系统替代传统机械开关结构，不仅简化整个防止人体触电系统的结构，且解决了易误触发的问题。
具体的方案为开关单元具有第一端和第二端，其中第一端接地，第二端与滤波单元耦接。
更具体的方案为开关单元包括整流模块、基准模块、阻抗检测模块、控制模块、驱动模块及晶体管；晶体管的源极、漏极分别与开关单元的第一端、第二端电连接；采样端向整流模块输出采样信号，整流模块向基准模块输出经整流处理后的采样信号；阻抗检测模块用于检测从开关单元第一端上的电流值，控制模块用于比较阻抗检测模块检测到电流值与基准模块输出电流值并向驱动模块输出控制信号，驱动模块向晶体管的栅极输出高低电平信号。
更具体的方案为整流模块为半波整流模块。
优选的方案为外接阻抗为500-1500欧姆。
附图说明
图1为本发明实施例中的电路原理框图；
图2为本发明实施例中开关单元的电路原理框图。
具体实施方式
参见图1，本发明LED直管灯包括灯管、设于灯管两端且具有插针的灯头、分别与两端的插针耦接的第一整流单元1和第二整流单元2、滤波单元5、LED驱动单元6、以及设于整流单元和滤波单元5之间的开关单元4。
第一整流单元1通过设于灯管一端上的插针与灯头座连接，并通过该灯头座中的电源接口与电源3电连接；第二整流单元2通过设于灯管另一端上的插针与另一灯头座连接，并通过该灯头座中的电源接口与电源3电连接；从而将电源3输出交流电信号整流成直流电信号。
第一整流单元1与第二整流单元2向滤波单元5输出的直流电信号，滤波单元5向LED驱动单元6输出滤波后电信号，LED驱动单元6驱动布置在灯管中LED发光。
参见图2，开关单元4包括整流模块41、基准模块43、阻抗检测模块44、控制模块45、驱动模块46及晶体管47，其第一端402与滤波单元5耦接，第二端403接地，第三端401通过采样端接入市电电源3。
整流模块41的输入端与第三端401连接，即用于接收采样端从电源3处采集的交流电信号，采样端与电源3的连接具体为与灯管的其中一端插针耦接或两端插针均耦接；采样端将采样获取的交流电信号输出给整流模块41，整流模块41向基准模块43输出经整流处理后的采样信号，在本实施例中，整流模块41为由二极管构成的半波整流模块。
基准模块43根据整流模块41输出的直流电信号，获取作为判断基准的基准电流信号，并输出给控制模块45。
晶体管47的漏极通过第一端402与滤波单元5耦接，源极通过第二端402接地，栅极与驱动模块46耦接。
阻抗检测模块44耦接于第二端402上，从而获取流进第二端402处的电流值，当灯管一端正确安装至灯头座上，而另一端未正确安装或与人体接触时，此时灯管另一端上外接阻抗相对比较大，导致第二端402上的电流值小于两端均正确安装入座时的电流，即第二端402上的电流信息包含了灯管另一端上的外接阻抗信息。
控制模块45用于比较阻抗检测模块44检测到电流值与基准模块43输出电流值，当灯管另一端正确安装入座时，阻抗检测模块44检测到电流值大于等于基准模块43输出电流值，控制模块45向驱动模块46输出控制信号，以驱动模块46向晶体管47的栅极输出高平信号，从而使第一端402与第二端403间为导通状态而使整个灯管为正常工作状态；反之，控制驱动模块46输出低电平信号，从而使第一端402与第二端403间为断路状态而使整个灯管为无法工作状态，同时可避免人体因触碰灯管另一端而发生触电危险。

Claims (3)

1.一种LED直管灯，包括灯管、设于灯管两端且具有插针的灯头、分别与两端的插针耦接的第一整流单元和第二整流单元、滤波单元、以及设于整流单元和滤波单元之间的开关单元，其特征在于：
所述开关单元具有与其中一端插针耦接或两端插针均耦接的采样端，当所述LED直管灯一端插针接入市电时，若另一端插针的外接阻抗大于等于设定值，则开关单元断开，若另一端插针的外接阻抗小于所述设定值，则开关单元闭合；所述开关单元具有第一端和第二端，其中第一端接地，第二端与滤波单元耦接；
所述开关单元包括整流模块、基准模块、阻抗检测模块、控制模块、驱动模块及晶体管；
晶体管的源极、漏极分别与开关单元的第一端、第二端连接；
所述采样端向整流模块输出采样信号，整流模块向基准模块输出经整流处理后的采样信号；
阻抗检测模块用于检测从开关单元第一端上的电流值，控制模块用于比较阻抗检测模块检测到电流值与基准模块输出电流值并向驱动模块输出控制信号，驱动模块向晶体管的栅极输出高低电平信号。
2.根据权利要求1所述的LED直管灯，其特征在于，所述整流模块为半波整流模块。
3.如权利要求1或2所述的LED直管灯，其特征在于，所述外接阻抗为500-1500欧姆。
CN201720874792.4U 2017-07-18 2017-07-18 Led直管灯 Active CN207283866U (zh)

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US15/694,734 US10117296B1 (en) 2017-07-18 2017-09-01 LED straight tube lamps

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CN111712013B (zh) * 2020-07-10 2023-11-07 陕西华晟智科电气有限公司 照明组件的保护装置，照明组件及其保护方法
CN112483999A (zh) * 2020-12-08 2021-03-12 北京金晟达生物电子科技有限公司 一种防触电灯头系统、控制方法、装置及灯

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