JP3226486U - LED circuit with overload protection function - Google Patents

LED circuit with overload protection function Download PDF

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JP3226486U
JP3226486U JP2019004534U JP2019004534U JP3226486U JP 3226486 U JP3226486 U JP 3226486U JP 2019004534 U JP2019004534 U JP 2019004534U JP 2019004534 U JP2019004534 U JP 2019004534U JP 3226486 U JP3226486 U JP 3226486U
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overload
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徐水盛
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東莞嘉盛照明科技有限公司
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract

【課題】ＬＥＤの過負荷保護を実現し、ＬＥＤの使用寿命を有効に延長できる過負荷保護機能付きＬＥＤ回路を提供する。【解決手段】入力回路１０と、定電圧・定電流モジュール２０と、ＬＥＤ負荷３０と、過負荷信号検出モジュール４０と、警報指示灯モジュール５０とを備え、入力回路を定電圧・定電流モジュールを介してＬＥＤ負荷に接続し、過負荷信号検出モジュールをＬＥＤ負荷の入力端に接続し、過負荷信号検出モジュールを定電圧・定電流モジュールに接続し、警報指示灯モジュールを過負荷信号検出モジュールに接続し、過負荷信号検出モジュールが検出情報に基づき、定電圧・定電流モジュールの回路の通断を制御することによって、ＬＥＤ負荷のオンまたはオフを制御する。【選択図】図１PROBLEM TO BE SOLVED: To provide an LED circuit with an overload protection function, which realizes LED overload protection and can effectively extend the service life of the LED. An input circuit, a constant voltage/constant current module 20, an LED load 30, an overload signal detection module 40, and an alarm indicator light module 50 are provided, and the input circuit is a constant voltage/constant current module. Via the LED load, the overload signal detection module is connected to the input end of the LED load, the overload signal detection module is connected to the constant voltage/constant current module, and the alarm indicator module is the overload signal detection module. Upon connection, the overload signal detection module controls on/off of the LED load by controlling disconnection of the circuit of the constant voltage/constant current module based on the detection information. [Selection diagram] Figure 1

Description

本考案は照明装置の構造に関するものであり、さらに詳しくは、過負荷保護機能付きＬＥＤ回路に関するものである。 The present invention relates to a structure of a lighting device, and more particularly to an LED circuit with an overload protection function.

ＬＥＤの電気供給回路について、何らかの保護措置を講じなければ、電圧の上昇に伴って電流の増大をもたらしてしまい、この増大電流が一定時間と幅を超えると、ＬＥＤが損傷するおそれがあるという問題が指摘されている。 Unless some measure is taken in the electrical supply circuit of the LED, the current will increase as the voltage rises, and if the increased current exceeds a certain time and width, the LED may be damaged. Has been pointed out.

市販されている一部のＬＥＤ灯またはＬＥＤスクリーンが長時間の使用を経た場合、そのうちの単個のＬＥＤ灯または一枚のＬＥＤスクリーンが点灯できなくなる現象が必ず生じている。その主な原因は、ＬＥＤ灯に長期間にわたって定格値を超えた電流を流すことによって、過度の発熱により寿命を縮減し、焼損されてしまうことにある。 When some LED lamps or LED screens on the market have been used for a long time, a phenomenon in which a single LED lamp or one LED screen among them cannot be lit occurs without fail. The main reason for this is that a current exceeding the rated value is passed through the LED lamp for a long period of time, which causes excessive heat generation to shorten the life and burn out.

従って、本考案の課題は、前記の通りの一部のＬＥＤおよびＬＥＤスクリーンが長時間の使用により点灯できなくなるという状況を解決することにある。 Therefore, an object of the present invention is to solve a situation in which some LEDs and LED screens as described above cannot be lit due to long-term use.

そこで、本考案者は、前記の通りの本考案の課題を解決するため鋭意検討を重ねた結果、後述のように、過負荷保護機能付きＬＥＤ回路が前記課題を解決できることに着目し、かかる知見に基いて本考案に想到するに至った。
すなわち、本考案に係る過負荷保護機能付きＬＥＤ回路は、入力回路と、定電圧・定電流モジュールと、ＬＥＤ負荷と、過負荷信号検出モジュールと、警報指示灯モジュールとを備え、入力回路を定電圧・定電流モジュールを介してＬＥＤ負荷に接続し、過負荷信号検出モジュールをＬＥＤ負荷の入力端に接続し、過負荷信号検出モジュールを定電圧・定電流モジュールに接続し、警報指示灯モジュールを過負荷信号検出モジュールに接続し、過負荷信号検出モジュールが検出情報に基づき、定電圧・定電流モジュールの回路の通断を制御することによって、ＬＥＤ負荷のオンまたはオフを制御する。 Therefore, as a result of intensive studies for solving the problems of the present invention as described above, the present inventor has noticed that an LED circuit with an overload protection function can solve the above problems, as will be described later. Based on this, we came to the present invention.
That is, the LED circuit with an overload protection function according to the present invention includes an input circuit, a constant voltage/constant current module, an LED load, an overload signal detection module, and an alarm indicator lamp module. Connect to the LED load via the voltage/constant current module, connect the overload signal detection module to the input end of the LED load, connect the overload signal detection module to the constant voltage/constant current module, and connect the alarm indicator module. The LED load is connected to the overload signal detection module, and the overload signal detection module controls ON/OFF of the LED load by controlling the disconnection of the circuit of the constant voltage/constant current module based on the detection information.

さらに、過負荷信号検出モジュールは、ＭＣＵと、光カプラとを含み、ＭＣＵの一ピンをＬＥＤ負荷の入力端の活線に接続し、光カプラの入力端部分が発光素子であり、光カプラの出力端部分が感光素子であり、光カプラの入力端をＭＣＵの一出力ピンに接続し、光カプラの出力端を定電圧・定電流モジュールに接続する。 Further, the overload signal detection module includes an MCU and an optical coupler, one pin of the MCU is connected to a live line of an input end of the LED load, and an input end portion of the optical coupler is a light emitting element. The output end part is a photosensitive element, the input end of the optical coupler is connected to one output pin of the MCU, and the output end of the optical coupler is connected to the constant voltage/constant current module.

定電圧・定電流モジュールは、制御チップＵ２を含み、光カプラの出力端を制御チップＵ２に接続する。 The constant voltage/constant current module includes a control chip U2, and connects the output end of the optical coupler to the control chip U2.

かくして、本考案の要旨は、次の（１）〜（３）に記載の通りのものである。
（１）入力回路と、定電圧・定電流モジュールと、ＬＥＤ負荷と、過負荷信号検出モジュールと、警報指示灯モジュールとを備え、前記入力回路を前記定電圧・定電流モジュールを介して前記ＬＥＤ負荷に接続し、前記過負荷信号検出モジュールを前記ＬＥＤ負荷の入力端に接続し、前記過負荷信号検出モジュールを前記定電圧・定電流モジュールに接続し、前記警報指示灯モジュールを前記過負荷信号検出モジュールに接続し、前記過負荷信号検出モジュールが検出情報に基づき、前記定電圧・定電流モジュールの回路の通断を制御することによって、前記ＬＥＤ負荷のオンまたはオフを制御することを特徴とする過負荷保護機能付きＬＥＤ回路。
（２）前記過負荷信号検出モジュールは、ＭＣＵと、光カプラとを含み、前記ＭＣＵの一ピンを前記ＬＥＤ負荷の入力端の活線に接続し、前記光カプラの入力端部分が発光素子であり、前記光カプラの出力端部分が感光素子であり、前記光カプラの入力端を前記ＭＣＵの一出力ピンに接続し、前記光カプラの出力端を前記定電圧・定電流モジュールに接続することを特徴とする（１）記載の過負荷保護機能付きＬＥＤ回路。
（３）前記定電圧・定電流モジュールは、制御チップＵ２を含み、前記光カプラの出力端を前記制御チップＵ２に接続することを特徴とする（２）記載の過負荷保護機能付きＬＥＤ回路。 Thus, the gist of the present invention is as described in the following (1) to (3).
(1) An input circuit, a constant voltage/constant current module, an LED load, an overload signal detection module, and an alarm indicator module are provided, and the input circuit is provided with the LED via the constant voltage/constant current module. A load, the overload signal detection module is connected to an input end of the LED load, the overload signal detection module is connected to the constant voltage/current module, and the alarm indicator module is connected to the overload signal. The LED load is connected to a detection module, and the overload signal detection module controls ON/OFF of the LED load by controlling disconnection of a circuit of the constant voltage/constant current module based on detection information. LED circuit with overload protection function.
(2) The overload signal detection module includes an MCU and an optical coupler, one pin of the MCU is connected to a live line of an input end of the LED load, and an input end portion of the optical coupler is a light emitting element. The output end of the optical coupler is a photosensitive element, the input end of the optical coupler is connected to one output pin of the MCU, and the output end of the optical coupler is connected to the constant voltage/constant current module. (1) The LED circuit with an overload protection function described in (1).
(3) The LED circuit with an overload protection function according to (2), wherein the constant voltage/constant current module includes a control chip U2, and an output end of the optical coupler is connected to the control chip U2.

本考案の有益な効果は、過負荷信号検出モジュールの設置によって、ＬＥＤ負荷を検出し、ＬＥＤ負荷の入力端の電圧情報を収集し、ＭＣＵが過負荷信号検出モジュールの検出情報に基づき、定電圧・定電流モジュールと、警報指示灯モジュールとを動作させるように制御することで、ＬＥＤの過負荷保護を実現し、ＬＥＤの使用寿命を有効に延長できることである、実用性に強く、普及化により大きい意義を有する。 The beneficial effect of the present invention is that by installing the overload signal detection module, the LED load is detected, the voltage information of the input end of the LED load is collected, and the MCU detects the constant voltage based on the detection information of the overload signal detection module. -By controlling the constant current module and the warning indicator module to operate, LED overload protection can be realized and the useful life of the LED can be effectively extended. It has great significance.

本考案の一実施形態に係る過負荷保護機能付きＬＥＤ回路の各モジュール間の接続態様図である。FIG. 3 is a connection mode diagram between modules of an LED circuit with an overload protection function according to an embodiment of the present invention. 図１に示す過負荷保護機能付きＬＥＤ回路の過負荷信号検出モジュール及び警報指示灯モジュールの他のモジュールとの接続時の態様図である。FIG. 2 is an aspect diagram when the LED circuit with an overload protection function shown in FIG. 1 is connected to an overload signal detection module and an alarm indicator lamp module.

図１と図２のように、本考案の過負荷保護機能付きＬＥＤ回路は、ＬＥＤに対して駆動照明及び過負荷保護のために用いられ、入力回路１０と、定電圧・定電流モジュール２０と、ＬＥＤ負荷３０と、過負荷信号検出モジュール４０と、警報指示灯モジュール５０とを備え、入力回路１０を定電圧・定電流モジュール２０を介してＬＥＤ負荷３０に接続し、過負荷信号検出モジュール４０をＬＥＤ負荷３０の入力端に接続し、過負荷信号検出モジュール４０をまた定電圧・定電流モジュール２０に接続し、警報指示灯モジュール５０を過負荷信号検出モジュール４０に接続し、過負荷信号検出モジュール４０が検出情報に基づき、定電圧・定電流モジュール２０の回路の通断を制御することによって、ＬＥＤ負荷３０のオンまたはオフを制御する。 As shown in FIGS. 1 and 2, the LED circuit with overload protection function of the present invention is used for driving illumination and overload protection for an LED, and includes an input circuit 10 and a constant voltage/current module 20. , The LED load 30, the overload signal detection module 40, and the alarm indicator lamp module 50, and the input circuit 10 is connected to the LED load 30 via the constant voltage/constant current module 20. Is connected to the input end of the LED load 30, the overload signal detection module 40 is also connected to the constant voltage/constant current module 20, and the warning indicator lamp module 50 is connected to the overload signal detection module 40 to detect the overload signal. The module 40 controls the ON/OFF of the LED load 30 by controlling the disconnection of the circuit of the constant voltage/constant current module 20 based on the detection information.

過負荷信号検出モジュール４０は、ＭＣＵ４１と、光カプラ４２とを含み、ＭＣＵ４１の一ピンをＬＥＤ負荷３０の入力端の活線に接続し、光カプラ４２の入力端部分が発光素子であり、光カプラ４２の出力端部分が感光素子であり、光カプラ４２の入力端をＭＣＵ４１の一出力ピンに接続し、光カプラ４２の出力端を定電圧・定電流モジュール２０に接続する。具体的で言うと、定電圧・定電流モジュール２０は、制御チップＵ２を含み、光カプラ４２の出力端を制御チップＵ２に接続する。 The overload signal detection module 40 includes an MCU 41 and an optical coupler 42, one pin of the MCU 41 is connected to a live line of an input end of the LED load 30, and an input end portion of the optical coupler 42 is a light emitting element. The output end portion of the coupler 42 is a photosensitive element, the input end of the optical coupler 42 is connected to one output pin of the MCU 41, and the output end of the optical coupler 42 is connected to the constant voltage/constant current module 20. Specifically, the constant voltage/constant current module 20 includes a control chip U2, and connects the output end of the optical coupler 42 to the control chip U2.

出力が過電流の時、ＭＣＵ４１がＰＩＮ７リードピンを介して出力電圧を検出し、出力電圧が設定過電流値を超えると、ＭＣＵ４１のＰＩＮ１リードピンより高電圧レベル信号を出力し、光カプラ４２ＵＦによって、信号が制御チップＵ２のＶＤＤリードピンに伝送される。このとき、制御チップＵ２のＶＤＤリードピンの電圧が瞬間的に低電圧レベルに変わり、制御チップＵ２の稼働を中止すれば、定電圧・定電流モジュール２０は、ＬＥＤを保護するように、ＬＥＤへの電気供給を中止し、ＭＣＵ４１のＰＩＮ７リードピンより高電圧レベル信号を出力し、警報指示灯モジュール５０の指示灯が点滅する。 When the output is overcurrent, the MCU41 detects the output voltage via the PIN7 lead pin, and when the output voltage exceeds the set overcurrent value, it outputs a high voltage level signal from the PIN1 lead pin of the MCU41, and the optical coupler 42UF outputs the signal. Are transmitted to the VDD lead pin of the control chip U2. At this time, if the voltage of the VDD lead pin of the control chip U2 momentarily changes to the low voltage level and the operation of the control chip U2 is stopped, the constant voltage/constant current module 20 outputs the voltage to the LED so as to protect the LED. The electricity supply is stopped, a high voltage level signal is output from the PIN7 lead pin of the MCU 41, and the indicator lamp of the alarm indicator lamp module 50 blinks.

本考案の有益な効果は、過負荷信号検出モジュール４０の設置によって、負荷信号検出モジュール４０によりＬＥＤ負荷３０を検出し、ＬＥＤ負荷３０の入力端の電圧情報を収集し、ＭＣＵ４１が過負荷信号検出モジュール４０の検出情報に基づき、定電圧・定電流モジュール２０と、警報指示灯モジュール５０とを動作させるように制御することで、ＬＥＤの過負荷保護を実現し、ＬＥＤの使用寿命を有効に延長できることである、実用性に強く、普及化により大きい意義を有する。 The beneficial effect of the present invention is that by installing the overload signal detection module 40, the load signal detection module 40 detects the LED load 30, collects the voltage information of the input end of the LED load 30, and the MCU 41 detects the overload signal. By controlling the constant voltage/constant current module 20 and the alarm indicator light module 50 to operate based on the detection information of the module 40, the LED overload protection is realized and the useful life of the LED is effectively extended. That is, it is practical, and has greater significance in its widespread use.

１０ 入力回路
２０ 定電圧・定電流モジュール
３０ ＬＥＤ負荷
４０ 過負荷信号検出モジュール
４１ ＭＣＵ
４２ 光カプラ
５０ 警報指示灯モジュール

10 input circuits
20 Constant voltage/constant current module
30 LED load
40 Overload signal detection module
41 MCU
42 Optical coupler
50 warning indicator light module

定電圧・定電流モジュールは、制御チップを含み、光カプラの出力端を制御チップに接続する。 The constant voltage/constant current module includes a control chip, and connects the output end of the optical coupler to the control chip.

かくして、本考案の要旨は、次の（１）〜（３）に記載の通りのものである。
（１）入力回路と、定電圧・定電流モジュールと、ＬＥＤ負荷と、過負荷信号検出モジュールと、警報指示灯モジュールとを備え、前記入力回路を前記定電圧・定電流モジュールを介して前記ＬＥＤ負荷に接続し、前記過負荷信号検出モジュールを前記ＬＥＤ負荷の入力端に接続し、前記過負荷信号検出モジュールを前記定電圧・定電流モジュールに接続し、前記警報指示灯モジュールを前記過負荷信号検出モジュールに接続し、前記過負荷信号検出モジュールが検出情報に基づき、前記定電圧・定電流モジュールの回路の通断を制御することによって、前記ＬＥＤ負荷のオンまたはオフを制御することを特徴とする過負荷保護機能付きＬＥＤ回路。
（２）前記過負荷信号検出モジュールは、ＭＣＵと、光カプラとを含み、前記ＭＣＵの一ピンを前記ＬＥＤ負荷の入力端の活線に接続し、前記光カプラの入力端部分が発光素子であり、前記光カプラの出力端部分が感光素子であり、前記光カプラの入力端を前記ＭＣＵの一出力ピンに接続し、前記光カプラの出力端を前記定電圧・定電流モジュールに接続することを特徴とする前記（１）記載の過負荷保護機能付きＬＥＤ回路。
（３）前記定電圧・定電流モジュールは、制御チップを含み、前記光カプラの出力端を前記制御チップに接続することを特徴とする前記（２）記載の過負荷保護機能付きＬＥＤ回路。 Thus, the gist of the present invention is as described in the following (1) to (3).
(1) An input circuit, a constant voltage/constant current module, an LED load, an overload signal detection module, and an alarm indicator module are provided, and the input circuit is provided with the LED via the constant voltage/constant current module. A load, the overload signal detection module is connected to an input end of the LED load, the overload signal detection module is connected to the constant voltage/current module, and the alarm indicator module is connected to the overload signal. The LED load is connected to a detection module, and the overload signal detection module controls ON/OFF of the LED load by controlling disconnection of a circuit of the constant voltage/constant current module based on detection information. LED circuit with overload protection function.
(2) The overload signal detection module includes an MCU and an optical coupler, one pin of the MCU is connected to a live line of an input end of the LED load, and an input end portion of the optical coupler is a light emitting element. Yes, the output end portion of the optical coupler is a photosensitive element, the input end of the optical coupler is connected to one output pin of the MCU, and the output end of the optical coupler is connected to the constant voltage/constant current module. An LED circuit with an overload protection function according to (1) above.
(3) The LED circuit with an overload protection function according to (2), wherein the constant voltage/constant current module includes a control chip, and an output end of the optical coupler is connected to the control chip.

Claims (3)

入力回路と、定電圧・定電流モジュールと、ＬＥＤ負荷と、過負荷信号検出モジュールと、警報指示灯モジュールとを備え、前記入力回路を前記定電圧・定電流モジュールを介して前記ＬＥＤ負荷に接続し、前記過負荷信号検出モジュールを前記ＬＥＤ負荷の入力端に接続し、前記過負荷信号検出モジュールを前記定電圧・定電流モジュールに接続し、前記警報指示灯モジュールを前記過負荷信号検出モジュールに接続し、前記過負荷信号検出モジュールが検出情報に基づき、前記定電圧・定電流モジュールの回路の通断を制御することによって、前記ＬＥＤ負荷のオンまたはオフを制御することを特徴とする過負荷保護機能付きＬＥＤ回路。 An input circuit, a constant voltage/constant current module, an LED load, an overload signal detection module, and an alarm indicator module are provided, and the input circuit is connected to the LED load via the constant voltage/constant current module. Then, the overload signal detection module is connected to the input terminal of the LED load, the overload signal detection module is connected to the constant voltage/constant current module, and the alarm indicator module is connected to the overload signal detection module. An overload, characterized in that the LED load is connected to the LED load control module and the ON/OFF of the LED load is controlled by controlling disconnection of the circuit of the constant voltage/current module based on the detection information. LED circuit with protection function. 前記過負荷信号検出モジュールは、ＭＣＵと、光カプラとを含み、前記ＭＣＵの一ピンを前記ＬＥＤ負荷の入力端の活線に接続し、前記光カプラの入力端部分が発光素子であり、前記光カプラの出力端部分が感光素子であり、前記光カプラの入力端を前記ＭＣＵの一出力ピンに接続し、前記光カプラの出力端を前記定電圧・定電流モジュールに接続することを特徴とする請求項１記載の過負荷保護機能付きＬＥＤ回路。 The overload signal detection module includes an MCU and an optical coupler, one pin of the MCU is connected to a live line of an input end of the LED load, and an input end portion of the optical coupler is a light emitting element, An output end portion of the optical coupler is a photosensitive element, an input end of the optical coupler is connected to one output pin of the MCU, and an output end of the optical coupler is connected to the constant voltage/constant current module. The LED circuit with the overload protection function according to claim 1. 前記定電圧・定電流モジュールは、制御チップＵ２を含み、前記光カプラの出力端を前記制御チップＵ２に接続することを特徴とする請求項２記載の過負荷保護機能付きＬＥＤ回路。

The LED circuit with overload protection function according to claim 2, wherein the constant voltage/constant current module includes a control chip U2, and an output end of the optical coupler is connected to the control chip U2.

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