KR20200039920A - Double lighting device of led lamp for vehicle - Google Patents

Double lighting device of led lamp for vehicle Download PDF

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KR20200039920A
KR20200039920A KR1020180119510A KR20180119510A KR20200039920A KR 20200039920 A KR20200039920 A KR 20200039920A KR 1020180119510 A KR1020180119510 A KR 1020180119510A KR 20180119510 A KR20180119510 A KR 20180119510A KR 20200039920 A KR20200039920 A KR 20200039920A
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led
led lamp
vehicle
leds
lighting device
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KR1020180119510A
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Korean (ko)
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KR102109041B1 (en
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최원록
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(주)윤진전자
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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
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q11/00—Arrangement of monitoring devices for devices provided for in groups B60Q1/00 - B60Q9/00
    • B60Q11/005—Arrangement of monitoring devices for devices provided for in groups B60Q1/00 - B60Q9/00 for lighting devices, e.g. indicating if lamps are burning or not
    • 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
    • H05B45/37—Converter circuits
    • 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
    • H05B45/48—Details of LED load circuits with an active control inside an LED matrix having LEDs organised in strings and incorporating parallel shunting devices
    • 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
    • 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
    • H05B47/29—Circuits providing for substitution of the light source in case of its failure

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

The present invention relates to a double lighting device of an LED lamp for a vehicle. The objective of the present invention is to provide the double lighting device of the LED lamp for the vehicle, capable of always turning on an LED while current flows by bypassing even if any one LED is opened, by forming an LED lamp for the vehicle in which a plurality of LEDs are connected in series and provided, as a double lighting device. To this end, the double lighting device of the LED lamp for the vehicle according to the present invention comprises: a DC-DC converter which supplies power inputted from a battery of a vehicle to a plurality of LEDs after controlling the same with constant voltage and constant current; an LED lamp in which a plurality of LEDs are connected in series to be provided; a plurality of open detection units which are formed to correspond to LEDs provided in the LED lamp respectively, and detect whether or not each driven LED is opened; and an auxiliary driving unit which receives a signal from each of the open detection units formed to correspond to the LEDs respectively, and allows a current line of an opened LED section to be bypassed and connected.

Description

차량용 엘이디 램프의 이중 점등장치{DOUBLE LIGHTING DEVICE OF LED LAMP FOR VEHICLE}DOUBLE LIGHTING DEVICE OF LED LAMP FOR VEHICLE}

본 발명은 차량용 엘이디 램프의 이중 점등장치에 관한 것으로, 보다 상세하게는 다수 개의 엘이디가 연결되는 차량용 엘이디 램프를 2중 점등장치로 구현하여 어느 하나의 엘이디의 오픈상태가 발생되더라도 전류가 우회하여 흐를 수 있도록 한 차량용 엘이디 램프의 이중 점등장치에 관한 것이다.The present invention relates to a double lighting device for an LED lamp for a vehicle, and more specifically, to realize a vehicle LED lamp to which a plurality of LEDs are connected as a double lighting device, current flows by bypassing even if any one LED is opened. It relates to a double lighting device for a LED lamp for a vehicle.

일반적으로, 차량의 내.외부에는 다양한 목적으로 조명장치가 설치되어 제공된다.      Generally, lighting devices are installed and provided for various purposes inside and outside the vehicle.

종래, 차량에 적용되는 조명장치로는 주로 백열전구가 널리 사용되었으나, 최근에는 낮은 소비전력, 다양한 색상, 긴 수명, 소형 경량화, 고속응답 등의 우수한 특성을 갖으며 친환경적 제품인 엘이디(LED) 조명장치로 대체되고 있는 실정이다.      Conventionally, incandescent light bulbs have been widely used as lighting devices applied to vehicles, but recently, they have excellent characteristics such as low power consumption, various colors, long lifespan, small size and light weight, and high-speed response, and are eco-friendly LED lighting devices. Is being replaced by.

상기 엘이디 램프를 차량용 조명장치로 적용하는데 있어서는 엘이디 램프의 밝기를 증대시키기 위하여 어레이(Array)로 사용하게 되며, 보다 효율성을 높이기 위해 직렬방식이 주로 사용되고 있다.      In applying the LED lamp as a vehicle lighting device, it is used as an array to increase the brightness of the LED lamp, and a serial method is mainly used to increase efficiency.

그러나, 종래에 다수 개의 엘이디가 직렬방식으로 연결되어 제공되는 차량용 엘이디 램프에 있어서는, 엘이디 구동부가 차량용 전원전압을 입력받아 엘이디 램프에 흐르는 전류를 센싱하면서 정전류를 엘이디 램프에 공급하여 엘이디 램프를 구동시키게 되는데, 이때 다수 개의 엘이디 중 어느 하나라도 오픈되는 경우, 엘이디로 공급되는 전류가 차단되어 엘이디 램프가 모두 꺼지게 되는 문제점이 발생하게 되었다.      However, in a conventional LED lamp provided with a plurality of LEDs connected in series, the LED driving unit receives a vehicle power supply voltage to sense the current flowing through the LED lamp and supplies a constant current to the LED lamp to drive the LED lamp. In this case, when any one of the plurality of LEDs is opened, the current supplied to the LEDs is cut off, causing a problem that all the LED lamps are turned off.

국내 공개특허공보 제10-2007-0001038호Domestic Patent Publication No. 10-2007-0001038 국내 등록특허 제10-0765950호Domestic registered patent No. 10-0765950 국내 공개특허공보 제10-2016-0042230호Domestic Patent Publication No. 10-2016-0042230

따라서, 본 발명은 상기한 바와 같은 종래의 문제점을 개선하기 위하여 안출된 것으로, 그 목적은 다수 개의 엘이디가 직렬로 연결되어 제공되는 차량용 엘이디 램프를 2중 점등장치로 구성하여 어느 하나의 엘이디가 오픈되더라도 전류가 우회하여 흐르면서 항상 엘이디가 점등될 수 있도록 한 차량용 엘이디 램프의 이중 점등장치를 제공하고자 하는 것이다.Therefore, the present invention was devised to improve the conventional problems as described above, the purpose of which is to configure a LED lamp for a vehicle provided by connecting a plurality of LEDs in series as a double lighting device to open any one LED. It is intended to provide a double lighting device for an LED lamp for a vehicle so that the LED is always lit while the current flows by bypassing.

본 발명의 다른 목적은 다수 개의 엘이디 중 임의의 엘이디에 오픈이 발생하더라도 이전 엘이디 램프의 휘도로 조명이 유지될 수 있도록 한 차량용 엘이디 램프의 이중 점등장치를 제공하고자 하는 것이다.Another object of the present invention is to provide a double lighting device for an LED lamp for a vehicle so that lighting can be maintained at the luminance of the previous LED lamp even if an open occurs on any LED among the plurality of LEDs.

상기한 바와 같은 목적을 달성하기 위한 본 발명에 따른 차량용 엘이디 램프의 이중 점등장치는, 차량의 배터리로부터 입력되는 전원을 정전압 및 정전류로 제어한 후 다수 개의 엘이디 측으로 공급하는 DC-DC 컨버터와; 다수 개의 엘이디(LED)가 직렬로 연결되어 제공되는 엘이디 램프와; 상기 엘이디 램프에 구비된 각각의 엘이디에 대응되게 구성되어 각각 구동되는 엘이디의 오픈(OPEN) 여부를 감지하는 오픈 감지부 및; 상기 각각의 엘이디와 대응되게 구성된 다수 개의 오픈 감지부 각각으로부터 신호를 수신하여 오픈된 엘이디 구간의 전류 라인이 우회 연결되도록 하는 보조 구동부를 포함하여 구성된 것;을 특징으로 한다.      A dual lighting device for a LED lamp for a vehicle according to the present invention for achieving the above object is a DC-DC converter for controlling the power input from the battery of the vehicle with a constant voltage and a constant current and supplying it to a plurality of LEDs; LED lamps provided by connecting a plurality of LEDs (LED) in series; An open detection unit configured to correspond to each LED provided in the LED lamp and detecting whether an LED driven is opened (OPEN); Characterized in that it comprises a secondary driving unit for receiving a signal from each of the plurality of open detection units configured to correspond to the respective LEDs so that the current line of the opened LED section is connected to bypass.

바람직하게, 상기 오픈 감지부는 오피엠프(OP AMP)로 이루어져, 반전 입력단자에 설정된 기준전압과 비반전 입력단자로 입력되는 신호를 비교하여 출력을 판단하여 동작되는 것을 특징으로 한다.      Preferably, the open sensing unit is made of an operational amplifier (OP AMP), characterized in that it is operated by determining the output by comparing the signal input to the non-inverting input terminal and the reference voltage set in the inverting input terminal.

더 바람직하게, 상기 보조 구동부는 상기 오픈 감지부로부터의 신호를 수신하여 해당 지점에 우회로를 제공함과 동시에 트랜지스터 구동을 통해 보조 엘이디가 점등되도록 제어되는 것을 특징으로 한다.      More preferably, the auxiliary driver receives a signal from the open sensing unit, provides a detour to the corresponding point, and is controlled to turn on the auxiliary LED through transistor driving.

상기에서 설명한 바와 같이 이루어진 본 발명에 따르면, 다수 개의 엘이디가 직렬로 연결되어 제공되는 차량용 엘이디 램프를 2중 점등장치로 구성함에 따라, 임의로 어느 하나의 엘이디가 오픈되더라도 전류가 우회하여 흐르면서 엘이디 램프의 점등상태를 유지할 수 있는 효과가 있게 된다.According to the present invention made as described above, a plurality of LEDs are connected in series to configure a vehicle LED lamp provided as a double lighting device, so that even if any one LED is opened, current flows by bypassing the LED lamp. There is an effect that can maintain the lighting state.

또한, 임의로 오픈된 엘이디를 대체하여 보조 점등장치가 구동됨에 따라, 다시 모든 엘이디가 점등되면서 이전 엘이디 램프의 휘도를 유지할 수 있는 효과도 있게 된다.In addition, as the auxiliary lighting device is driven by replacing the randomly opened LED, all the LEDs are turned on again, and there is an effect of maintaining the luminance of the previous LED lamp.

도 1은 본 발명에 따른 차량용 엘이디 램프의 이중 점등장치의 구성을 나타내는 블럭도,
도 2는 본 발명에 따른 차량용 엘이디 램프의 이중 점등장치의 구성을 나타내는 회로도,
도 3a는 본 발명에 따른 차량용 엘이디 램프의 이중 점등장치에 구비되는 엘이디 램프의 구성을 나타내는 회로도,
도 3b는 본 발명에 따른 차량용 엘이디 램프의 이중 점등장치에 구비되는 오픈 감지부의 구성을 나타내는 회로도,
도 3c는 본 발명에 따른 차량용 엘이디 램프의 이중 점등장치에 구비되는 보조 구동부의 구성을 나타내는 회로도이다.1 is a block diagram showing the configuration of a double lighting device for a vehicle LED lamp according to the present invention,
2 is a circuit diagram showing the configuration of a double lighting device for a vehicle LED lamp according to the present invention,
Figure 3a is a circuit diagram showing the configuration of an LED lamp provided in the dual lighting device of the LED lamp for a vehicle according to the present invention,
Figure 3b is a circuit diagram showing the configuration of an open detection unit provided in the double lighting device of the LED lamp for a vehicle according to the present invention,
Figure 3c is a circuit diagram showing the configuration of the auxiliary driving unit provided in the double lighting device of the LED lamp for a vehicle according to the present invention.

이하, 상기한 바와 같이 구성된 본 발명에 대해 첨부도면을 참조하여 상세히 설명한다.      Hereinafter, the present invention configured as described above will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 차량용 엘이디 램프의 이중 점등장치의 구성을 나타내는 블럭도, 도 2는 본 발명에 따른 차량용 엘이디 램프의 이중 점등장치의 구성을 나타내는 회로도, 도 3a는 본 발명에 따른 차량용 엘이디 램프의 이중 점등장치에 구비되는 엘이디 램프의 구성을 나타내는 회로도, 도 3b는 본 발명에 따른 차량용 엘이디 램프의 이중 점등장치에 구비되는 오픈 감지부의 구성을 나타내는 회로도, 도 3c는 본 발명에 따른 차량용 엘이디 램프의 이중 점등장치에 구비되는 보조 구동부의 구성을 나타내는 회로도이다.1 is a block diagram showing the configuration of a double lighting device of a vehicle LED lamp according to the present invention, FIG. 2 is a circuit diagram showing a configuration of a double lighting device of a vehicle LED lamp according to the present invention, and FIG. 3A is a vehicle LED according to the present invention Circuit diagram showing the configuration of the LED lamp provided in the double lighting device of the lamp, Figure 3b is a circuit diagram showing the configuration of the open detection unit provided in the double lighting device of the vehicle LED according to the present invention, Figure 3c is a vehicle LED according to the present invention It is a circuit diagram showing the configuration of the auxiliary driving unit provided in the double lighting device of the lamp.

먼저, 본 발명에 따른 차량용 엘이디 램프의 이중 점등장치는, 다수 개의 엘이디가 직렬로 연결되어 제공되는 차량용 엘이디 램프가 2중 점등이 가능한 구조로 구성됨에 따라, 어느 하나의 엘이디가 임의로 오픈되더라도 전류가 우회하여 흐르면서 항상 엘이디 램프의 점등상태가 유지될 수 있도록 구현된다.      First, in the dual lighting device of the LED lamp for a vehicle according to the present invention, as the LED lamp for a vehicle provided by connecting a plurality of LEDs in series is configured to be capable of double lighting, the current is generated even if any one LED is arbitrarily opened. It is implemented so that the lighting state of the LED lamp can be maintained as it flows by bypassing.

이를 위해, 본 발명에 따른 차량용 엘이디 램프의 이중 점등장치는, 차량의 일정 지점에 설치되어 조명을 제공하는 다수 개의 엘이디(LED)로 이루어진 엘이디 램프(20)와, 상기 다수 개 엘이디의 구동을 위한 전원을 공급하는 DC-DC 컨버터(10)와, 상기 다수 개 엘이디 각각의 오픈 여부를 감지하는 다수 개의 오픈 감지부(30) 및, 상기 각 오픈 감지부(30)로부터 신호를 수신하여 선택적으로 동작되는 다수 개의 보조 구동부(40) 등을 포함하여 구성된다.      To this end, the dual lighting device of the LED lamp for a vehicle according to the present invention is installed in a certain point of the vehicle, the LED lamp 20 consisting of a plurality of LEDs (LEDs) for providing lighting, and for driving the plurality of LEDs DC-DC converter 10 for supplying power, a plurality of open detection units 30 for detecting whether each of the plurality of LEDs is open, and receiving signals from the open detection units 30 to selectively operate It is configured to include a plurality of auxiliary driving unit 40 and the like.

상기 DC-DC 컨버터(10)는 해당 차량의 배터리로부터 입력되는 전원을 엘이디 램프(20)에서 필요로 하는 전압과 전류로 변환시키게 되는데, 상기 DC-DC 컨버터(10)는 상기 엘이디 램프(20)를 구성하는 직렬 엘이디의 개수에 따라 정전압 및 정전류를 출력시키게 된다.      The DC-DC converter 10 converts power input from the battery of the corresponding vehicle into voltage and current required by the LED lamp 20, wherein the DC-DC converter 10 is the LED lamp 20 A constant voltage and a constant current are output according to the number of series LEDs constituting the.

상기 엘이디 램프(20)는 다수 개의 엘이디가 직렬로 연결되어 제공된 상태에서, 상기 DC-DC 컨버터(10)로부터 공급되는 전원에 의해 구동되면서 소정 휘도 및 색상의 빛으로 발광작용을 행하도록 구성된다.      The LED lamp 20 is configured to perform light emission with light of a predetermined luminance and color while being driven by power supplied from the DC-DC converter 10 in a state in which a plurality of LEDs are connected and provided in series.

상기 오픈 감지부(30)는 오피 앰프(OP AMP)(32)로 이루어져, 상기 엘이디 램프(20)를 구성하는 각각의 엘이디에 대응되게 구성되며, 오피 앰프(32)의 반전 입력단자에 설정된 기준전압과 비반전 입력단자로 입력되는 신호를 비교하여 출력을 판단하도록 이루어진다.      The open detection unit 30 is composed of an op amp (OP AMP) 32, is configured to correspond to each LED constituting the LED lamp 20, the reference set in the inverting input terminal of the op amp 32 It is made to determine the output by comparing the voltage and the signal input to the non-inverting input terminal.

상기 다수 개의 보조 구동부(40)는 상기 다수 개의 오피 앰프(32)와 각각 연계되어 출력신호를 인가받도록 제공되되, 한 개씩의 트랜지스터(TR) 및 엘이디(LED)를 포함하여 구성된다.      The plurality of auxiliary driving units 40 are provided to receive output signals in connection with the plurality of op amps 32, respectively, and include one transistor TR and one LED.

상기 각각의 보조 구동부(40)는 임의의 오픈 감지부(30)로부터의 신호 입력 시 그와 대응되는 오픈된 엘이디 구간의 전류 라인이 우회 연결되도록 제어됨과 아울러, 트랜지스터의 구동을 통해 보조 엘이디를 점등시키도록 구성된다.      Each of the auxiliary driving units 40 is controlled to bypass the current line of the opened LED section corresponding to the signal input from the arbitrary open sensing unit 30, and also turns on the auxiliary LED through driving of the transistor. It is configured to let.

이어, 상기 바와 같이 이루어진 본 발명의 작용에 대해 도를 참조하여 설명하면 다음과 같다.Next, the operation of the present invention made as described above will be described with reference to the drawings.

본 발명에 따라, 차량용 엘이디 램프의 이중 점등장치가 구성된 해당 차량의 배터리로부터 DC-DC 컨버터(10) 측으로 전원이 공급되면, 상기 DC-DC 컨버터(10) 내부에서는 다수 개의 엘이디가 직렬로 연결되어 제공되는 상기 엘이디 램프(20)의 구동을 위한 정전압 및 정전류로 변환하여 출력을 행하게 된다.According to the present invention, when power is supplied to the DC-DC converter 10 from the battery of the vehicle in which the double lighting device of the LED lamp for a vehicle is configured, a plurality of LEDs are connected in series inside the DC-DC converter 10 The output is converted to a constant voltage and a constant current for driving the provided LED lamp 20.

이에, 상기 DC-DC 컨버터(10)로부터 출력되는 전원은 다수 개가 직렬로 연결된 다수 개의 엘이디(LED1 내지 LED4) 각각으로 전압이 분배되어 인가되면서 정전류가 흐르게 되며, 소정 전원의 공급에 따라 엘이디 램프(20)를 구성하는 다수 개의 엘이디(LED1 내지 LED4)가 모두 점등되어 발광되면서 해당 차량에 조명을 제공하게 된다.      Accordingly, as the power output from the DC-DC converter 10 is distributed and applied to each of a plurality of LEDs (LED1 to LED4) connected in series, a constant current flows, and an LED lamp ( 20) A plurality of LEDs (LED1 to LED4) constituting all of the lights are illuminated to provide a light to the vehicle.

이때, 상기 엘이디 램프(20)의 조도는 상기 DC-DC 컨버터(10)에서의 출력 전원 조절을 통해 그 밝기를 조절할 수가 있음은 물론이다.      In this case, it is needless to say that the brightness of the LED lamp 20 can be adjusted by adjusting the output power of the DC-DC converter 10.

상기 엘이디 램프(20)를 구성하는 다수 개의 엘이디(LED1 내지 LED4) 구동 중 임의의 엘이디(본 발명의 일실시예에서는 LED1이 오픈된 것으로 가정하여 설명한다.)에 이상이 발생된 경우, 해당 엘이디(LED1)와 직렬 연결된 모든 엘이디(LED1 내지 LED4)가 꺼지게 된다.      When an abnormality occurs in any of the LEDs (LED1 to LED4) driving during the driving of the LEDs (LED1 to LED4) constituting the LED lamp 20, it is assumed that LED1 is opened. All LEDs (LED1 to LED4) connected in series with (LED1) are turned off.

상기 엘이디 램프(20)의 정상 동작 중에는 각각의 엘이디(LED1 내지 LED4)에 일정한 전압이 분배되어 인가되게 되며, 그 중 임의의 엘이디(LED1)가 고장으로 오픈(OPEN)되어 꺼지게 되면, 그와 연계된 저항(R1)에 인가되는 전압이 정상상태에 비해 높게 인가되게 된다.      During the normal operation of the LED lamp 20, a certain voltage is distributed and applied to each LED (LED1 to LED4), and if any of the LEDs (LED1) is opened due to a failure and is turned off, it is connected to the LED. The voltage applied to the resistor R1 is applied higher than the normal state.

따라서, 상기 오픈 감지부(30)를 구성하는 오피 앰프(OP AMP)(32)에서는 반전 입력단자(-)에 설정된 기준전압과 비반전 입력단자(+)로 입력되는 신호를 상호 비교하여 출력을 판단하게 되는데, 즉 반전 입력단자(-)에 연결되어 있는 분압저항(R2, R3)을 이용하여 오피 앰프(OP AMP)(32)에서 비교 가능한 기준전압을 만들게 되며, 이 분압저항의 저항 값을 변경하여 기준전압을 변경할 수가 있게 된다.      Therefore, in the OP AMP 32 constituting the open sensing unit 30, the output voltage is compared by comparing the signal input to the non-inverting input terminal (+) with the reference voltage set in the inverting input terminal (-). It is judged, that is, a reference voltage comparable to that of the operational amplifier (OP AMP) 32 is made using the divided voltage resistors R2 and R3 connected to the inverting input terminal (-), and the resistance value of the divided voltage resistor is determined. By changing, the reference voltage can be changed.

예컨대, 비반전 입력단자(+)로 입력되는 전압과 기준전압을 비교하였을 때, 상기 비반전 입력단자(+)의 전압이 높으면 오피 앰프(OP AMP)(32) 출력 전압이 직류 +5[V]로 출력되고, 비반전 입력단자(+)의 전압이 낮으면 오피 앰프(OP AMP)(32) 출력 전압이 0[V]로 출력되게 된다.      For example, when comparing the voltage input to the non-inverting input terminal (+) and the reference voltage, when the voltage of the non-inverting input terminal (+) is high, the output voltage of the OP AMP 32 is DC +5 [V ], And when the voltage of the non-inverting input terminal (+) is low, the output voltage of the op amp 32 is output as 0 [V].

이에, 상기 엘이디 램프(20)를 구성하는 임의의 엘이디(LED1)가 오픈되어 꺼지게 되면, 그 상태를 해당 엘이디(LED1)와 연계된 오픈 감지부(32)에서 감지하여 High 신호를 그와 연계된 보조 구동부(40) 측으로 출력시키게 된다.      Accordingly, when any LED (LED1) constituting the LED lamp 20 is opened and turned off, the open detection unit 32 associated with the LED (LED1) detects the state and detects a high signal associated with it. It is output to the auxiliary driving unit 40 side.

상기 오픈 감지부(30)로부터 출력된 신호가 상기 보조 구동부(40)의 트랜지스터(TR1)의 베이스(B: Base) 단자로 입력되어 전류의 흐름을 제어하면, 소정 엘이디(LED1)의 오픈에 의해 차단된 상기 엘이디 램프(20) 전원의 전류가 상기 트랜지스터(TR1)의 컬렉터(C: Collector)에 연결되어 있는 보조 엘이디(LED5)를 통과한 후 최종적으로 트랜지스터(TR1)의 이미터(E: Emitter)로 흐르게 되며, 상기 트랜지스터(TR1)의 구동을 통해 상기 보조 엘이디(LED5)가 점등되면서 다시 오픈 상태의 엘이디(LED1)를 제외한 모든 엘이디(LED2, LED3, LED4)가 점등되면서 상기 엘이디 램프(20)는 정상으로 동작될 수 있게 된다.      When the signal output from the open sensing unit 30 is input to the base (B: Base) terminal of the transistor TR1 of the auxiliary driving unit 40 to control the flow of current, by opening the predetermined LED (LED1) After the current of the cut off LED lamp 20 passes through the auxiliary LED (LED5) connected to the collector (C: Collector) of the transistor TR1, finally, the emitter (E: Emitter) of the transistor TR1 ), And through the driving of the transistor TR1, the auxiliary LED (LED5) is turned on and all the LEDs (LED2, LED3, LED4) except the open LED (LED1) are turned on while the LED lamp (20) is turned on. ) Can be operated normally.

이에, 본 발명에 따른 차량용 엘이디 램프의 이중 점등장치에서는 오픈 상태의 엘이디(LED1)를 대체하여 보조 엘이디(LED5)가 나머지 엘이디(LED2, LED3, LED4)들과 함께 점등됨에 따라, 기존의 엘이디 램프(20) 휘도를 그대로 유지할 수가 있게 되는 것이다.      Thus, in the dual lighting device of the LED lamp for a vehicle according to the present invention, as the replacement LED (LED1) is replaced with the auxiliary LED (LED5) along with the other LEDs (LED2, LED3, LED4), the existing LED lamp (20) It is possible to maintain the luminance as it is.

한편, 이상에서는 본 발명의 바람직한 실시예에 대하여 도시하고 설명하였지만, 본 발명은 상술한 특정의 실시예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어나지 않는 범위에서 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 의해 다양한 변형 및 수정이 가능한 것은 물론이고, 이러한 변형 및 수정 발명들은 본 발명의 기술적 사상이나 전망으로부터 개별적으로 이해되어져서는 안되는 것이다. On the other hand, although the preferred embodiments of the present invention have been described and described above, the present invention is not limited to the specific embodiments described above, and the technology to which the present invention belongs without departing from the gist of the present invention claimed in the claims Various modifications and corrections are possible by a person having ordinary knowledge in the field, and these modifications and modifications are not to be individually understood from the technical spirit or prospect of the present invention.

10: DC-DC 컨버터, 20: 엘이디(LED) 램프,
30: 오픈(OPEN) 감지부, 32: 오피 앰프(OP AMP),
40: 보조 구동부, LED1 내지 LED4: 엘이디,
LED5 내지 LED8: 보조 엘이디, R1 내지 R12: 저항,
TR1 내지 TR4: 트랜지스터.10: DC-DC converter, 20: LED (LED) lamp,
30: open (OPEN) detection unit, 32: OP AMP (OP AMP),
40: auxiliary drive, LED1 to LED4: LED,
LED5 to LED8: auxiliary LED, R1 to R12: resistance,
TR1 to TR4: transistors.

Claims (3)

차량의 배터리로부터 입력되는 전원을 정전압 및 정전류로 제어한 후 다수 개의 엘이디 측으로 공급하는 DC-DC 컨버터와;
다수 개의 엘이디(LED)가 직렬로 연결되어 제공되는 엘이디 램프와;
상기 엘이디 램프에 구비된 각각의 엘이디에 대응되게 구성되어 각각 구동되는 엘이디의 오픈(OPEN) 여부를 감지하는 오픈 감지부 및;
상기 각각의 엘이디와 대응되게 구성된 다수 개의 오픈 감지부 각각으로부터 신호를 수신하여 오픈된 엘이디 구간의 전류 라인이 우회 연결되도록 하는 보조 구동부를 포함하여 구성된 것;을 특징으로 하는 차량용 엘이디 램프의 이중 점등장치.A DC-DC converter that controls the power input from the battery of the vehicle with a constant voltage and a constant current and supplies it to a plurality of LEDs;
LED lamps provided by connecting a plurality of LEDs (LED) in series;
An open detection unit configured to correspond to each LED provided in the LED lamp and detecting whether an LED driven is opened (OPEN);
And a secondary driving unit configured to receive a signal from each of the plurality of open detection units configured to correspond to the respective LEDs and to bypass the current line of the opened LED section by bypass connection; a dual lighting device for a vehicle LED lamp . 제 1항에 있어서,
상기 오픈 감지부는 오피엠프(OP AMP)로 이루어져, 반전 입력단자에 설정된 기준전압과 비반전 입력단자로 입력되는 신호를 비교하여 출력을 판단하여 동작되는 것을 특징으로 하는 차량용 엘이디 램프의 이중 점등장치.According to claim 1,
The open detection unit consists of an op amp, and compares a reference voltage set to an inverting input terminal with a signal input to a non-inverting input terminal, and operates by judging the output. 제 1항 또는 제 2항에 있어서,
상기 보조 구동부는 상기 오픈 감지부로부터의 신호를 수신하여 해당 지점에 우회로를 제공함과 동시에 트랜지스터 구동을 통해 보조 엘이디가 점등되도록 제어되는 것을 특징으로 하는 차량용 엘이디 램프의 이중 점등장치.The method according to claim 1 or 2,
The auxiliary driving unit receives a signal from the open detection unit and provides a detour to the corresponding point, and at the same time, a dual lighting device for an LED lamp for a vehicle, characterized in that the auxiliary LED is controlled to be turned on through transistor driving.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115119354A (en) * 2022-08-29 2022-09-27 珠海溪谷医疗科技有限公司 Luminous power regulator for strong pulse light source and its method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070001038A (en) 2006-12-08 2007-01-03 주식회사 루미파워 Car indoor led lamp using constant current overdriving circuit
KR100765950B1 (en) 2006-03-14 2007-10-11 대성전기공업 주식회사 Room lamp for automobile
KR100922336B1 (en) * 2009-02-17 2009-10-21 서철식 LED illumination apparatus
KR20110026788A (en) * 2009-09-08 2011-03-16 엘지디스플레이 주식회사 Light emitting diode package and light source device using the same
KR20160042230A (en) 2014-10-07 2016-04-19 현대모비스 주식회사 Apparatus for driving led lamp of vehicle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100765950B1 (en) 2006-03-14 2007-10-11 대성전기공업 주식회사 Room lamp for automobile
KR20070001038A (en) 2006-12-08 2007-01-03 주식회사 루미파워 Car indoor led lamp using constant current overdriving circuit
KR100922336B1 (en) * 2009-02-17 2009-10-21 서철식 LED illumination apparatus
KR20110026788A (en) * 2009-09-08 2011-03-16 엘지디스플레이 주식회사 Light emitting diode package and light source device using the same
KR20160042230A (en) 2014-10-07 2016-04-19 현대모비스 주식회사 Apparatus for driving led lamp of vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115119354A (en) * 2022-08-29 2022-09-27 珠海溪谷医疗科技有限公司 Luminous power regulator for strong pulse light source and its method
CN115119354B (en) * 2022-08-29 2022-12-13 珠海溪谷医疗科技有限公司 Luminous power regulator for strong pulse light source and its method

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