KR20160028117A - After image eliminated led illumination lamp - Google Patents

After image eliminated led illumination lamp Download PDF

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Publication number
KR20160028117A
KR20160028117A KR1020140116680A KR20140116680A KR20160028117A KR 20160028117 A KR20160028117 A KR 20160028117A KR 1020140116680 A KR1020140116680 A KR 1020140116680A KR 20140116680 A KR20140116680 A KR 20140116680A KR 20160028117 A KR20160028117 A KR 20160028117A
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South Korea
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leds
led
floating charge
serial
parallel
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KR1020140116680A
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Korean (ko)
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이승표
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(주) 트랜스마그넷
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Priority to KR1020140116680A priority Critical patent/KR20160028117A/en
Publication of KR20160028117A publication Critical patent/KR20160028117A/en

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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
    • H05B47/10—Controlling the light source
    • 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]
    • H05B45/40—Details of LED load circuits
    • H05B45/44—Details of LED load circuits with an active control inside an LED matrix
    • H05B45/46—Details of LED load circuits with an active control inside an LED matrix having LEDs disposed in parallel lines
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

The present invention relates to a light emitting diode (LED) lighting device which converts AC power into DC power to use the same, removes an afterimage generated after blocking an AC power switch, and comprises a plurality of LEDs. According to the present invention, at least ten LEDs are connected in series to form a serial LED array, and the LEDs included in the serial LED array are unitarily or multiply grouped to connect floating charge removal resistance to the LED of each group in parallel, thereby removing, by using a resistor string, floating charge remaining in both ends of the LEDs when the LEDs are turned off.

Description

무잔상 엘이디 조명장치{AFTER IMAGE ELIMINATED LED ILLUMINATION LAMP}BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to an AF illuminator,

본 발명은 엘이디 조명장치에 관한 것으로, 더 상세하게는 교류 전원을 직류 전원으로 변환하여 사용하는 엘이디 조명장치에서 교류 전원 스위치 차단 후 발생하는 잔상을 제거한 무잔상 엘이디 조명장치에 관한 것이다.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an LED lighting device, and more particularly, to a non-after-image LED lighting device in which an afterimage generated after an AC power switch is disconnected in an LED lighting device that converts AC power into DC power.

한국공개특허공보 공개번호 10-2014-0097284호 등에는 10개 이상의 엘이디를 직렬 연결하고, 30볼트 이상의 고전압 직류(DC)을 인가하여 순방향 전류가 매우 낮은 상태로 동작하는 엘이디 조명장치가 소개되고 있다. 이렇게 할 경우 엘이디 조명장치의 발열량을 줄이고 효율을 높일 수 있다. 상용 교류(AC)를 A-D컨버터에 의하여 고압의 직류로 변환한 이들 고전압 엘이디 조명장치의 전원으로 사용한다. 이때, 엘이디와 A-D컨버터는 등기구에 조립되고 엘이디 조명장치의 점등 및 소등을 위한 스위치는 상용 교류 공급선 중 한 선에 연결된다. 일반적으로 실내 배선은 단상 2선식의 배선을 하는데, 2선 가운데 1선은 전압선이고 다른 1선은 중성선이다. 중성선은 변압기 사고로 고압측이 저압측(실내 배선)으로 흘러들어갈 경우의 안전을 위하여 접지하고 있다.
Korean Patent Laid-Open Publication No. 10-2014-0097284 discloses an LED lighting device in which 10 or more LEDs are connected in series and a high-voltage direct current (DC) of 30 volts or more is applied to operate in a state of a very low forward current . In this case, the amount of heat generated by the LED illumination device can be reduced and the efficiency can be increased. It is used as a power source for these high voltage LED lighting devices which convert commercial AC (AC) into high voltage direct current by AD converter. At this time, the LED and the AD converter are assembled in the luminaire, and the switch for lighting and lighting of the LED illumination device is connected to one of the commercial AC supply lines. In general, the indoor wiring is a single-phase, two-wire type wiring, one of the two lines is a voltage line and the other one is a neutral line. Neutral line is grounded for safety when high voltage side flows into low voltage side (indoor wiring) by transformer accident.

엘이디 조명장치의 점소등용 스위치가 전압선에 연결되지 않고 중성선에 연결될 경우, 점소등용 스위치가 열린 직후 또는 소등된 직후, A-D컨버터의 접지단자는 접지선에서 연결되지 않고 입력단자에는 상용 교류의 전압선이 연결되어, A-D컨버터로 부터 엘이디 어레이측으로 미세한 방전이 일어나고 이로 인해 소등된 상태에서도 엘이디가 미세한 점멸 상태를 유지하는 잔상 현상이 일어난다. 이러한 잔상 현상은 직렬로 연결한 엘이디 개수가 늘어나고 사용하는 직류 전압이 커질 수록 더 심해진다.
When the switch for lighting of the LED lighting unit is connected to the neutral wire without being connected to the voltage line, the ground terminal of the AD converter is not connected to the ground line immediately after the switch is opened or immediately after it is turned off. A fine discharge is generated from the AD converter to the LED array side, and a residual image phenomenon occurs in which the LED remains in a minute blinking state even in the off state. This residual image becomes worse as the number of LEDs connected in series increases and the DC voltage used increases.

본 발명은 상술한 고전압 엘이디 전명장치의 잔상 현상을 제거하기 위하여 이루어진 것으로, 본 발명이 해결하고자 하는 과제는, 엘이디 조명장치 소등 후 엘이디 양단에 표류하는 부유 전하의 전기에너지를 열로 방출하여 소등후 잔상 현상을 제거한 고전압 무잔상 엘이디 조명장치를 제공하는 데 있다.
SUMMARY OF THE INVENTION The present invention has been made in order to solve the afterimage phenomenon of the high voltage LED lifting apparatus described above, and it is an object of the present invention to provide an image stabilization apparatus, Voltage without-after-image LED lighting device in which the phenomenon is eliminated.

상술한 본 발명의 과제는, 복수의 엘이디를 포함하는 엘이디 조명 장치에 있어서,The above-described object of the present invention is achieved by an LED lighting device comprising a plurality of LEDs,

적어도 10개 이상의 엘이디를 직렬로 연결하여 직렬 엘이디 어레이(serial LED array)를 형성하고, 상기 직렬 엘이디 어레이에 포함된 엘이디를 단일 또는 복수개씩 그룹 지어 각 그룹의 엘이디에 부유 전하 제거 저항을 병렬로 연결함으로써 엘이디 소등시 엘이디 양단에 잔류하는 전하를 저항열로 제거하게 함으로써 해결할 수 있다.
A serial LED array is formed by connecting at least 10 or more LEDs in series and grouping the LEDs included in the serial LED array into a group or a plurality of groups to connect a floating charge removal resistor to each group of LEDs in parallel Thereby eliminating the charge remaining on both ends of the LED by the resistance heat when the LED is turned off.

상기 직렬 엘이디 어레이에는 12개, 또는 24개, 또는 36개의 엘이디가 포함되고, 이들 엘이디는 2개 또는 3개씩 그룹 지어 각 그룹의 엘이디에 부유 전하 제거 저항을 병렬로 연결하는 것이 바람직하다.
The serial LED array preferably includes twelve, twenty-four, or thirty six LEDs, and the LEDs are grouped into two or three groups, and the floating charge removing resistors are connected in parallel to each group of LEDs.

상술한 구성을 갖는 본 발명에 의하면, 소등 후 직렬로 연결된 1개 내지 3개의 엘이디와 부유 전하 제거 저항간에 회로가 형성되어 부유 전하의 순환 경로가 형성되고, 부유 전하의 전기에너지는 부유 전하 제거 저항에서 열에너지로 바뀌게 되므로 엘이디 어레이에 부유하는 전하를 빠르게 제거하여 소등 후 잔상 현상을 효과적으로 제거할 수 있다.
According to the present invention having the above-described configuration, a circuit is formed between one to three LEDs connected in series after extinguishing and a floating charge removing resistor to form a circulating path of floating charges, and the electric energy of the floating charge becomes a floating charge removing resistor The charge stored in the LED array can be quickly removed and the afterimage phenomenon can be effectively removed.

도 1은 본 발명의 일 실시 예에 따라 1개의 엘이디를 그룹지어 부유 전하 제거 저항을 연결한 엘이디 조명장치의 회로도이다.
도 2는 본 발명의 다른 실시 예에 따라 2개의 엘이디를 그룹지어 부유 전하 제거 저항을 연결한 엘이디 조명장치의 회로도이다.
도 3는 본 발명의 또 다른 실시 예에 따라 3개의 엘이디를 그룹지어 부유 전하 제거 저항을 연결한 엘이디 조명장치의 회로도이다.1 is a circuit diagram of an LED lighting device in which one group of LEDs is connected to a floating charge removing resistor in accordance with an embodiment of the present invention.
2 is a circuit diagram of an LED illumination device in which two LEDs are grouped and a floating charge removal resistor is connected according to another embodiment of the present invention.
3 is a circuit diagram of an LED lighting device in which three LEDs are grouped and a floating charge removing resistor is connected according to another embodiment of the present invention.

이하, 첨부한 도면을 참조하여 본 발명에 따른 무잔상 엘이디 조명장치의 구체적인 실시 예를 상세히 설명한다.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a specific embodiment of a non-retention LED lighting device according to the present invention will be described in detail with reference to the accompanying drawings.

도 1 내지 도 3에는, 12개의 엘이디(D)를 직렬로 연결하여 직렬 엘이디 어레이(a1 ~ a6)를 형성하고, 이렇게 형성된 직렬 엘이디 어레이(a1 ~ a6) 6개를 A-D컨버터(3)의 출력단에 병렬로 연결한 경우를 예시적으로 도시하였다. 도 1 내지 도 3에서와 같이, 직렬 엘이디 어레이를 구성하는 엘이디 개수가 12개일 때는 DC출력이 36V인 A-D컨버터(3)를 사용한다. 도면에 도시하지 않았지만, 본 발명에 따른 직렬 엘이디 어레이는 24개 또는 36개의 엘이디를 포함할 수 있다. 24개의 엘이디로 직렬 엘이디 어레이를 구성할 경우에는 DC출력이 72V인 A-D컨버터(3)를 사용하고, 36개의 엘이디로 직렬 어레이를 구성할 경우 DC출력이 108V인 A-D컨버터(3)를 사용한다. 상기 A-D컨버터로 공지의 스윙치 모드 파워 서플라이디(SMPS)를 사용할 수 있다.
1 to 3, serial LED arrays a1 to a6 are formed by connecting twelve LEDs D in series and six serial LED arrays a1 to a6 thus formed are connected to the output terminal of the AD converter 3 As shown in FIG. As shown in Figs. 1 to 3, when the number of LEDs constituting the serial LED array is 12, the AD converter 3 whose DC output is 36V is used. Although not shown in the drawing, the serial LED array according to the present invention may include 24 or 36 LEDs. When configuring a serial LED array with 24 LEDs, use an AD converter (3) with a DC output of 72V and an AD converter (3) with a DC output of 108V when configuring a serial array with 36 LEDs. A known swing mode power supply (SMPS) can be used as the AD converter.

이와 같이, 본 발명은 복수의 엘이디를 포함하는 엘이디 조명 장치 가운데서, 특히, 적어도 10개 이상의 엘이디(D)를 직렬로 연결하여 직렬 엘이디 어레이(serial LED array)를 형성한 엘이디 조명장치에 적용된다. 12개, 24개 또는 36개의 엘이디를 직렬로 연결하여 조명장치를 구성할 경우, 각 엘이디(D)에 인가되는 전압은 3V여야 하므로 조명장치에 공급되는 전압은 30V 이상의 고압 직류전압이어야 한다. 따라서, 상용 교류의 중립선에 연결한 소등 스위치가 열려 조명장치가 소등되면 엘이디에 흐르는 정상 전류는 차단되지만 접지를 통해 방출되지 못한 부유 전하에 의하여 소등 직후 엘이디(D)에 잔상이 발생하게 되는데, 본 발명은 이 부유 전하를 효과적으로 제거하여 소등 직후 엘이디(D)의 잔상을 없애 준다.
As described above, the present invention is applied to an LED illumination device including a plurality of LEDs, in particular, at least 10 LEDs D connected in series to form a serial LED array. When 12, 24 or 36 LEDs are connected in series, the voltage applied to each LED (D) must be 3 V, so the voltage supplied to the lighting device should be a high voltage DC voltage of 30 V or more. Accordingly, when the light switch connected to the neutral line of the commercial AC is opened and the illumination device is turned off, the normal current flowing through the LED is cut off, but the residual image is generated in the LED D immediately after being turned off by the floating charge, The present invention effectively removes the floating charge and eliminates the afterimage of the LED (D) immediately after it is turned off.

본 발명의 특징은 상기 직렬 엘이디 어레이(a1 ~ a6)에 포함된 엘이디(D)를 단일 또는 복수개씩 그룹 지어 각 그룹의 엘이디(D)에 부유 전하 제거 저항(R)을 병렬로 연결함으로써 엘이디 소등시 엘이디 양단에 잔류하는 부유 전하를 저항열로 제거함으로써 소등 직후 발생하는 잔상을 순간적으로 소멸시키는 데 있다. 도 1은 1개의 엘이디를 하나의 그룹(g1 ~ g12)으로 그룹 지어 각 그룹(g1 ~ g12)의 엘이디에 병렬로 부유 전하 제거 저항(R)을 병렬로 연결하여 회로를 구성한 경우를 보여주고, 도 2는 2개의 엘이디를 하나의 그룹(g1 ~ g6)으로 그룹 지어 각 그룹(g1 ~ g6)의 엘이디에 병렬로 부유 전하 제거 저항(R)을 병렬로 연결하여 회로를 구성한 경우를 보여주고, 도 3은 3개의 엘이디를 하나의 그룹(g1 ~ g6)으로 그룹 지어 각 그룹(g1 ~ g6)의 엘이디에 병렬로 부유 전하 제거 저항(R)을 병렬로 연결하여 회로를 구성한 경우를 보여준다. 4개 이상의 조명용 엘이디를 그룹지어 부유 전하 제거 저항(R)을 연결할 경우에는 부유 전하량이 많아 잔상 제거가 지연된다.
A feature of the present invention is that a single or a plurality of LEDs D included in the serial LED arrays a1 to a6 are grouped and the floating charge removing resistors R are connected in parallel to the LEDs D of each group, The floating charge remaining at both ends of the LED is removed by the resistance heat, thereby instantaneously destroying the afterimage that occurs immediately after the lamp is turned off. 1 shows a case where a circuit is formed by grouping one LED into one group g1 to g12 and connecting a floating charge removing resistor R in parallel to the LEDs of the groups g1 to g12 in parallel, 2 shows a case where a circuit is formed by grouping two LEDs into one group g1 to g6 and connecting the floating charge removal resistors R in parallel to the LEDs of the groups g1 to g6 in parallel, 3 shows a case where a circuit is formed by grouping three LEDs into one group g1 to g6 and connecting the floating charge removal resistors R in parallel to the LEDs of the groups g1 to g6 in parallel. When the floating charge removal resistor (R) is connected to four or more lighting LEDs grouped together, the amount of floating charge is large and the afterimage removal is delayed.

상기 부유 전하 제거 저항(R)으로는 1KΩ ~ 100KΩ의 저항을 사용할 수 있지만, 실험적으로, 도 2에서와 같이 2개의 엘이디(D)를 그룹 지어 부유 전하 제거 저항(R)을 병렬로 연결할 때는 3KΩ - 4KΩ의 저항을 사용하는 것이 바람직하고, 도 3에서와 같이 3개의 엘이디(D)를 그룹 지어 부유 전하 제거 저항(R)을 병렬로 연결할 때는 4KΩ - 5KΩ의 저항을 사용하는 것이 바람직하다. 이와 같이, 2개 또는 3개의 엘이디를 복수로 그룹 지어 적절히 선택된 오옴(Ω)의 부유 전하 제거 저항(R)을 병렬 연결할 경우 저항 개수를 줄이면서도 효과적인 잔상 제거 효과를 얻을 수 있다. 1KΩ 미만의 저항을 연결할 경우, 점등시 엘이디에 흐르는 전류량이 지나치게 줄어 밝기가 떨어지고 100KΩ을 초과하는 저항을 연결할 경우 잔상 제거 시간이 길어진다.
As the floating charge removing resistor R, a resistor of 1 K? To 100 K? May be used. However, experimentally, when two floating gates D are grouped and the floating charge removing resistors R are connected in parallel as shown in FIG. 2, It is preferable to use a resistance of 4 K?, And it is preferable to use a resistance of 4 K? - 5 K? When grouping the three LEDs D as shown in FIG. 3 and connecting the floating charge removing resistors R in parallel. As described above, when the floating charge removing resistors R having a properly selected Ohms (Ω) grouping two or three LEDs in groups are connected in parallel, an effective afterimage removing effect can be obtained while reducing the number of resistors. If a resistor of less than 1KΩ is connected, the amount of current flowing through the LED will be too low to cause the brightness to decrease. If a resistor of more than 100KΩ is connected, the afterglow removal time will be longer.

도 1 내지 도 3에서, 점소등 스위치가 닫히면(on 되면) A-D컨버터는 상용 교류 전원 입력을 DC 36V 전압으로 변환하여 서로 병렬로 연결된 직렬 엘이디 어레이(a1 ~ a6) 양단에 공급하고, 각 직렬 에이디 어레이(a1 ~ a6)에는 36V가 인가되므로, 모든 엘이디(D)에 전류가 정상적으로 흘러 점등된다. 이 상태에서 점소등 스위치가 열리면(off 되면), A-D컨버터(3)의 (-)단은 접지에서 떨어지고, A-D컨버터(3)의 (+)단에는 여전히 상용 교류 전원(7)의 전압선이 연결되어, 직렬 엘이디 어레이(a1 ~ a6)를 구성하는 엘이디(D) 양단에 부유 전하가 전위차를 두고 불균일하게 방전되고 그 결과 미세 전류가 흘러 엘이디(D)에서 잔상이 발생할 수 있지만, 이들 엘이디(D)에 병렬 연결된 부유 전하 제거 저항(R)에 부유 전하가 흘러들면서 전하의 전기 에너지가 열로 방출되고, 부유 전하는 순식간에 소멸한다. 따라서, 엘이디 조명장치 소등 후 나타날 수 있는 잔상 현상을 효과적으로 차단할 수 있는 것이다.
1 to 3, when the on / off switch is closed (turned on), the AD converter converts the commercial AC input voltage into a DC 36V voltage and supplies the voltage to both ends of the serial LED arrays a1 to a6 connected in parallel with each other, Since 36V is applied to the arrays a1 to a6, current flows normally to all the LEDs D, and is turned on. (-) terminal of the AD converter 3 is disconnected from the ground and the voltage line of the commercial AC power source 7 is still connected to the (+) terminal of the AD converter 3 when the on / off switch is opened So that floating currents are unevenly discharged at both ends of the LEDs A 1 to A 6 constituting the series of LED arrays a 1 to a 6 so that a minute current flows and a residual image can be generated in the LED D. However, ), The floating electric charge removing resistor (R) connected in parallel with the floating electric charge flows, the electric energy of the electric charge is discharged as heat, and the floating electric charge disappears in an instant. Accordingly, the afterimage phenomenon that may appear after the LED illumination apparatus is turned off can be effectively blocked.

1 : 기판 3 : A-D컨버터
5 : 점소등 스위치 7 : 상용 교류 전원
a1 ~ a6 : 직렬 엘이디 어레이 D : 엘이디
g1 ~ g6 : 엘이디 그룹 R : 부유 전하 제거 저항1: substrate 3: AD converter
5: Off light switch 7: Commercial AC power
a1 ~ a6: Serial LED array D: LED
g1 to g6: LED group R: floating charge removal resistance

Claims (2)

복수의 엘이디를 포함하는 엘이디 조명 장치에 있어서,
적어도 10개 이상의 엘이디를 직렬로 연결하여 직렬 엘이디 어레이(serial LED array)를 형성하고, 상기 직렬 엘이디 어레이에 포함된 엘이디를 단일 또는 복수개씩 그룹 지어 각 그룹의 엘이디에 부유 전하 제거 저항을 병렬로 연결함으로써 엘이디 소등시 엘이디 양단에 잔류하는 부유 전하를 저항열로 제거하게 하는 것을 특징으로 하는 무잔상 엘이디 조명 장치.
1. An LED lighting device comprising a plurality of LEDs,
A serial LED array is formed by connecting at least 10 or more LEDs in series and grouping the LEDs included in the serial LED array into a group or a plurality of groups to connect a floating charge removal resistor to each group of LEDs in parallel So that the floating charge remaining on both ends of the LED is removed by the resistance heat.
제 1 항에 있어서,
상기 직렬 엘이디 어레이에는 12개, 또는 24개, 또는 36개의 엘이디가 포함되고, 이들 엘이디는 2개 또는 3개씩 그룹 지어 각 그룹의 엘이디에 부유 전하 제거 저항을 병렬로 연결한 것을 특징으로 하는 무잔상 엘이디 조명 장치.

The method according to claim 1,
Wherein the serial LED array includes twelve, twenty-four, or thirty six LEDs, wherein the LEDs are grouped into two or three groups, and the floating charge removing resistors are connected in parallel to the LEDs of the respective groups. LED lighting device.

KR1020140116680A 2014-09-03 2014-09-03 After image eliminated led illumination lamp KR20160028117A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113316284A (en) * 2021-04-14 2021-08-27 厦门普为光电科技有限公司 LED lamp with residual light preventing function

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113316284A (en) * 2021-04-14 2021-08-27 厦门普为光电科技有限公司 LED lamp with residual light preventing function

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