KR20080088249A - A led control unit for a vehicle - Google Patents

A led control unit for a vehicle Download PDF

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Publication number
KR20080088249A
KR20080088249A KR1020070030965A KR20070030965A KR20080088249A KR 20080088249 A KR20080088249 A KR 20080088249A KR 1020070030965 A KR1020070030965 A KR 1020070030965A KR 20070030965 A KR20070030965 A KR 20070030965A KR 20080088249 A KR20080088249 A KR 20080088249A
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South Korea
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led
power supply
microcomputer
control unit
constant voltage
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KR1020070030965A
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Korean (ko)
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KR101263031B1 (en
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이용익
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현대자동차주식회사
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    • 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
    • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/80—Circuits; Control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2106/00—Interior vehicle lighting devices
    • 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)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Led Devices (AREA)

Abstract

An LED(Light Emitting Diode) control unit for a vehicle is provided to remarkably reduce power consumption of a battery by minimizing a dark current flowing in each element in turning off an LED. An LED control unit for a vehicle includes a voltage regulator circuit(1), a microcomputer(2), and a Tr constant voltage power circuit(4). The voltage regulator circuit generates power of 12V of a battery(6) into power of 5V for the microcomputer and an internal logic. The microcomputer controls on/off and dimming of an LED(5) by driving the Tr constant voltage power circuit according to input of a signal of an operation switch(3) and has a sleep/wake up function to switch an active state and a standby state. The Tr constant voltage power circuit applies power so that the LED emits light.

Description

차량용 ＬＥＤ 제어유니트 {a LED control unit for a vehicle}LED control unit for vehicle {a LED control unit for a vehicle}

도 1a는 일반 벌브형 등의 작동스위치 오프 시의 회로도Figure 1a is a circuit diagram when the operation switch off, such as a general bulb type

도 1b는 동 일반 벌브형 등의 작동스위치 온 시의 회로도Fig. 1B is a circuit diagram when an operation switch of the same general bulb type is turned on.

도 2a는 차량용 LED의 작동스위치 오프 시의 회로도Figure 2a is a circuit diagram when the operation switch off of the vehicle LED

도 2b는 동 차량용 LED의 작동스위치 온 시의 회로도Figure 2b is a circuit diagram when the operation switch on the LED for the vehicle

도 3a는 디밍 기능을 가진 차량용 LED의 작동스위치 오프 시의 회로도Figure 3a is a circuit diagram when the operation switch off of the vehicle LED with a dimming function

도 3b는 동 디밍 기능을 가진 차량용 LED의 작동스위치 온 시의 회로도Figure 3b is a circuit diagram when the operation switch on the vehicle LED having the same dimming function

도 4는 종래의 차량용 LED 제어유니트의 구성 블록도Figure 4 is a block diagram of a conventional vehicle LED control unit

도 5는 본 발명의 한 실시예의 구성 블록도5 is a block diagram of an embodiment of the present invention;

도 6은 동 실시예의 Tr 정전압 전원회로 및 LED의 세부 회로도6 is a detailed circuit diagram of a Tr constant voltage power supply circuit and an LED of the embodiment;

< 도면의 주요 부분에 대한 부호 설명 ><Explanation of Signs of Major Parts of Drawings>

1 : 전압 레귤레이터 회로 2 : 마이컴1: voltage regulator circuit 2: microcomputer

3 : 작동스위치 4 : Tr 정전압 전원회로3: operation switch 4: Tr constant voltage power supply circuit

5 : LED 6 : 배터리5: LED 6: battery

41 : 분압부 42 : 신호전달부41: voltage divider 42: signal transmitter

43 : 출력전압 안정화부43: output voltage stabilizer

본 발명은 차량의 실내등 또는 MAP등으로 사용되는 LED의 구동을 제어하기 위한 차량용 LED 제어유니트에 관한 것으로, 더 자세하게는 작동스위치 오프시에 각 소자에 흐르는 암전류를 최소화하여 배터리의 성능저하를 방지할 수 있도록 한 것에 관한 것이다. The present invention relates to a vehicle LED control unit for controlling the driving of the LED used as a vehicle interior light or MAP lamp, and more particularly, to minimize the dark current flowing to each device when the operation switch off to prevent the performance degradation of the battery It's about making things happen.

일반적으로 차량 실내등 또는 MAP등은 도 1a 및 도 1b와 같이 일반 벌브형 전구를 사용하다가 최근에는 도 2a 및 도 2b와 같이 LED를 적용하는 추세로 바뀌고 있으며, 고급사양 차량에서는 도 3a 및 도 3b와 같이 LED의 온/오프 단순제어뿐 아니라 작동스위치의 입력에 따라 램프의 밝기를 변화시키는 디밍(Dimming) 제어로직을 적용하고 있다.In general, a vehicle interior light or a MAP lamp uses a general bulb type light bulb as shown in FIGS. 1A and 1B, and recently, LEDs are changed to a trend of applying LEDs as shown in FIGS. 2A and 2B. In addition to the simple on / off control of LEDs, Dimming control logic is applied to change the brightness of the lamp according to the input of the operation switch.

상기 디밍(Dimming) 제어를 위해서는 전자제어회로를 추가 적용하여야 하는 바, 이러한 전자제어유니트를 적용할 때에 램프를 제어하기 위해 대기시간동안 제어회로 내에 어느 정도(수mA 정도)의 암전류가 발생하게 되며, 이 상태로 방치시 암전류가 차량 밧데리 성능에 영향을 미칠 수 있게 된다.In order to control the dimming, an electronic control circuit must be additionally applied. When the electronic control unit is applied, a certain amount of dark current is generated in the control circuit during the waiting time to control the lamp. In this state, dark current can affect the vehicle battery performance.

도 4에는 종래의 차량용 LED 제어유니트의 구성 블록도가 도시되어 있다.4 is a block diagram illustrating a conventional vehicle LED control unit.

종래에 있어서 차량용 LED 제어유니트는 도 4와 같이 배터리(6')의 12V 전원 을 마이컴(2') 및 내부 로직 전원용 5V 전원을 만들어 주는 전압 레귤레이터 회로(1')와; 제어기의 중앙컨트롤러로서 작동스위치(3') 의 신호 입력에 따라 LED 드라이버(4')를 온 또는 온 타임(On Time)을 조절하는 듀티(Duty) 신호를 내는 마이컴(2')과; LED(5')가 빛을 내도록 전원을 인가하는 LED 드라이버(4');를 구비하는 형태의 것을 주로 사용하였다.In the related art, the LED control unit for a vehicle includes a voltage regulator circuit 1 'for generating a 12V power supply of the battery 6' and a 5V power supply for the microcomputer 2 'and an internal logic power supply as shown in FIG. 4; A microcomputer 2 'which is a central controller of the controller and outputs a duty signal for adjusting the on time or the on time of the LED driver 4' according to the signal input of the operation switch 3 '; The LED driver 4 'which applies power so that the LED 5' emits light; was mainly used.

상기 종래의 차량용 LED 제어유니트에 있어서 차량 배터리에서 12V를 인가할 경우 작동스위치(3')의 입력신호를 체크하기 위해 마이컴(2')이 활성(Active) 상태를 유지하게 되므로 항상 전압 레귤레이터 회로(1')와 마이컴(2'), LED 드라이버(4')에 상시 전원이 인가되어 소비되며, 그들 소자 및 회로 상태에 따라 수mA 의 암전류가 흐르게 되므로 장시간 방치시 차량 배터리의 성능 저하 또는 차량 시동 불가 등의 오작동의 원인이 될 수도 있다.In the conventional vehicle LED control unit, when the 12V is applied from the vehicle battery, the microcomputer 2 'is kept in an active state to check the input signal of the operation switch 3'. 1 '), microcomputer 2', and LED driver 4 'are always powered and consumed, and dark current of several mA flows according to their device and circuit conditions. It may also cause malfunctions.

본 발명은 상기 종래의 차량용 LED 제어유니트의 제결함을 감안하여 안출한 것이며, 그 목적이 LED 오프 시에 LED를 온/오프 및 디밍 제어하는 각 소자에서 흐르는 암전류를 최소화하여 배터리의 성능 저하를 방지할 수 있도록 하는 차량용 LED 제어유니트를 제공하는 데에 있는 것이다.The present invention has been made in view of the deficiency of the conventional LED control unit for vehicles, the object of which is to minimize the dark current flowing in each element to control the LED on / off and dimming when the LED is off to prevent degradation of the battery performance It is to provide a vehicle LED control unit that enables it.

본 발명은 상기의 목적을 달성하기 위하여 배터리에 접속되어 전압을 분압하 는 분압부와, 마이컴과 접속되어 그로부터 입력되는 작동신호를 분압부를 작동시키는 신호전달부와, 배광안정화를 위해 분압부의 출력전압을 안정화시켜 LED에 공급하는 출력전압 안정화부로 이루어지는 Tr 정전압 전원회로와, 활성(Active) 상태와 대기(Standby) 상태로 전환 가능한 슬립/웨이크업(Sleep/Wake-up) 기능을 가진 마이컴을 구비하여 LED가 오프된 대기 상태에서 각 소자에 흐르는 암전류를 억제할 수 있도록 한 것을 특징으로 하며, 이하 그 구체적인 기술내용을 더욱 자세히 설명하면 다음과 같다.The present invention provides a voltage divider connected to a battery for dividing a voltage to achieve the above object, a signal transfer unit connected to a microcomputer to operate a voltage divider for operating a signal input therefrom, and an output voltage of the voltage divider for light distribution stabilization. Tr constant voltage power supply circuit consisting of output voltage stabilization unit for stabilizing and supplying to LED, and microcomputer with sleep / wake-up function that can be switched between active state and standby state. It is characterized in that it is possible to suppress the dark current flowing to each device in the standby state of the LED is off, and the specific technical details will be described below.

즉, 도 5에는 본 발명의 한 실시예의 구성 블록도가 도시되어 있고, 도 6에는 동 실시예의 Tr 정전압 전원회로 및 LED의 세부 회로도가 도시되어 있는 바, 본 발명의 차량용 LED 제어유니트는 배터리(6)의 12V 전원을 마이컴(2) 및 내부 로직 전원용 5V 전원을 만들어 주는 전압 레귤레이터 회로(1)와; 작동스위치(3)의 신호 입력에 따라 Tr 정전압 전원회로(4)를 구동하여 LED(5)를 온/오프 및 감광을 제어하며, 활성(Active) 상태와 대기(Standby) 상태로 전환 가능한 슬립/웨이크업(Sleep/Wake-up) 기능을 가진 마이컴(2)과; LED(5)가 빛을 내도록 전원을 인가하는 Tr 정전압 전원회로(4);를 구비하여서 되는 것이다.That is, FIG. 5 shows a block diagram of an embodiment of the present invention, and FIG. 6 shows a detailed circuit diagram of the Tr constant voltage power supply circuit and the LED of the embodiment. The vehicle LED control unit of the present invention includes a battery ( A voltage regulator circuit 1 for making the 12V power supply of 6) a 5V power supply for the microcomputer 2 and the internal logic power supply; According to the signal input of the operation switch (3) to drive the Tr constant voltage power supply circuit (4) to control the LED (5) on / off and dimming, the sleep / switchable to active (Standby) state A microcomputer 2 having a wake / up function; And a Tr constant voltage power supply circuit 4 for supplying power so that the LED 5 emits light.

본 발명에 있어서 Tr 정전압 전원회로(4)는 배터리(6)에 접속되어 전압을 분압하는 분압부(41)와, 마이컴(2)과 접속되어 그로부터 입력되는 작동신호를 분압부(41)를 작동시키는 신호전달부(42)와, 배광안정화를 위해 분압부(41)의 출력전압을 안정화시켜 LED(5)에 공급하는 출력전압 안정화부(43)로 이루어진다.In the present invention, the Tr constant voltage power supply circuit 4 is connected to the battery 6 to divide the voltage and divides the voltage, and the voltage divider 41 is connected to the microcomputer 2 to operate the input signal. The signal transmitter 42 and the output voltage stabilizer 43 for stabilizing the output voltage of the voltage divider 41 to supply light to the LED 5 for stabilization of light distribution.

상기와 같이 구성된 본 발명에 있어서 슬립/웨이크업(Sleep/Wake-up) 기능을 가진 마이컴(2)은 작동스위치(3)의 입력이 온/오프함에 따라 Tr 정전압 전원회로(4)를 구동하여 LED(5)의 온/오프 및 감광을 제어하게 되며, 작동스위치(3) 오프 시 마이컴(2)은 Tr 정전압 전원회로(4)를 오프시키고, 일정시간이 지나도 작동스위치(3) 입력이 없을 경우, 활성(Active) 상태에서 대기(Standby) 상태로 전환하게 된다.In the present invention configured as described above, the microcomputer 2 having a sleep / wake-up function drives the Tr constant voltage power supply circuit 4 as the input of the operation switch 3 is turned on / off. The on / off and dimming of the LED (5) is controlled, and when the operation switch (3) is off, the microcomputer (2) turns off the Tr constant voltage power supply circuit (4), and there is no input of the operation switch (3) even after a certain time. In this case, the transition from the active state to the standby state.

이 때 마이컴(2)의 암전류는 수mA의 활성(Active) 상태에서 수~수십uA 의 대기(Standby) 상태를 유지하며, 또한 종래의 차량용 LED 제어유니트의 LED 드라이버(4')는 LED(5) 오프 시에도 최대 수mA의 소비전류가 있지만 본 발명에 있어서는 Tr 정전압 전원회로(4)를 적용함으로써 LED(5) 오프 시 암전류를 없앨 수 있게 됨은 물론 원가절감에도 기여할 수 있게 된다.At this time, the dark current of the microcomputer 2 maintains a standby state of several tens to several tens of microamperes in an active state of several mA, and the LED driver 4 'of the conventional vehicle LED control unit is an LED (5). In the present invention, there is a maximum current consumption of several mA, but in the present invention, by applying the Tr constant voltage power supply circuit 4, the dark current can be eliminated when the LED 5 is turned off, and the cost can be reduced.

한편 이러한 대기 상태에서 작동스위치(3)의 온 신호가 입력되면 마이컴(2)은 웨이크업(Wake-up)한 후 활성(Active) 상태로 동작하게 된다.Meanwhile, when the ON signal of the operation switch 3 is input in such a standby state, the microcomputer 2 wakes up and operates in an active state.

도 6과 같이 Tr 정전압 전원회로(4)에 인가되는 배터리(6)의 전원은 분압부(가)에 의해 분압되며, 신호전달부(나)에 의해 마이컴(2)의 신호가 분압부(가)에 전달되어 분압부(가)가 턴온(Turn-on)되면 분압된 전원이 출력전압 안정화부(다)를 거쳐 LED(5)에 공급된다.As shown in FIG. 6, the power of the battery 6 applied to the Tr constant voltage power supply circuit 4 is divided by the voltage dividing unit A, and the signal of the microcomputer 2 is divided by the signal transmitting unit B. When the voltage divider is turned on, the divided power is supplied to the LED 5 through the output voltage stabilizer.

이처럼 본 발명은 작동스위치(3) 오프되면 마이컴(2)이 일정시간을 대기한 후 작동스위치(3)의 입력이 없을 경우 Tr 정전압 전원회로(4)를 오프시키는 동시에 마이컴(2)이 자체 슬립(Sleep) 모드로 대기하게 되는 것이며, 다시 작동스위치(3) 입력이 인가되면 마이컴(2)이 웨이크업(Wake-up)한 후 활성(Active) 상태로 동작하 고, 작동스위치(3)의 입력신호에 따라 LED(5)를 제어하게 된다.As described above, in the present invention, when the operation switch 3 is off, the microcomputer 2 waits for a predetermined time, and when there is no input of the operation switch 3, the microcomputer 2 sleeps itself while turning off the Tr constant voltage power supply circuit 4. If the input of the operation switch (3) is applied again, the microcomputer (2) wakes up and operates in the active state, and the operation switch (3) The LED 5 is controlled according to the input signal.

상기 마이컴(2)의 슬립(Sleep) 모드에서 마이컴(2)은 최소 상태의 암전류를 유지하고, Tr 정전압 전원회로(4)도 오프시킴으로써 LED 제어유니트 전체의 암전류를 최소화하게 된다.In the sleep mode of the microcomputer 2, the microcomputer 2 maintains the dark current in the minimum state and also turns off the Tr constant voltage power supply circuit 4 to minimize the dark current of the entire LED control unit.

이상에서와 같이 본 발명은 슬립/웨이크업(Sleep/Wake-up) 기능을 가진 마이컴(2)을 통하여 작동스위치(3) 오프 시 Tr 정전압 전원회로(4)를 오프시키는 동시에 마이컴(2) 자체도 슬립모드로 대기하도록 한 것으로, 본 발명에 의하면 LED(5) 오프 시 각 소자에 흐르는 암전류를 최소화할 수 있게 되어 배터리의 전력소모를 현저하게 저감할 수 있게 되는 등의 효과를 얻을 수 있게 된다.As described above, the present invention turns off the Tr constant voltage power supply circuit 4 when the operation switch 3 is turned off through the microcomputer 2 having a sleep / wake-up function and at the same time the microcomputer 2 itself. According to the present invention, it is possible to minimize the dark current flowing to each device when the LED 5 is turned off, thereby achieving the effect of significantly reducing the power consumption of the battery. .

Claims (2)

배터리(6)의 12V 전원을 마이컴(2) 및 내부 로직 전원용 5V 전원을 만들어 주는 전압 레귤레이터 회로(1)와; 작동스위치(3)의 신호 입력에 따라 Tr 정전압 전원회로(4)를 구동하여 LED(5)를 온/오프 및 감광을 제어하며, 활성(Active) 상태와 대기(Standby) 상태로 전환 가능한 슬립/웨이크업(Sleep/Wake-up) 기능을 가진 마이컴(2)과; LED(5)가 빛을 내도록 전원을 인가하는 Tr 정전압 전원회로(4);를 구비하는 것을 특징으로 하는 차량용 LED 제어유니트.A voltage regulator circuit 1 for generating a 12V power supply of the battery 6 and a 5V power supply for the microcomputer 2 and the internal logic power supply; According to the signal input of the operation switch (3) to drive the Tr constant voltage power supply circuit (4) to control the LED (5) on / off and dimming, the sleep / switchable to active (Standby) state A microcomputer 2 having a wake / up function; And a Tr constant voltage power supply circuit (4) for applying power to the LED (5) to emit light. 제1항에 있어서, Tr 정전압 전원회로(4)는 배터리(6)에 접속되어 전압을 분압하는 분압부(41)와, 마이컴(2)과 접속되어 그로부터 입력되는 작동신호를 분압부(41)를 작동시키는 신호전달부(42)와, 배광안정화를 위해 분압부(41)의 출력전압을 안정화시켜 LED(5)에 공급하는 출력전압 안정화부(43)로 이루어지는 것을 특징으로 하는 차량용 LED 제어유니트.The voltage regulator circuit of claim 1, wherein the Tr constant voltage power supply circuit (4) is connected to the battery (6) to divide the voltage and divides the voltage. A vehicle LED control unit comprising a signal transmission unit 42 for activating the power supply and an output voltage stabilization unit 43 for stabilizing the output voltage of the voltage dividing unit 41 to supply light to the LED 5 for stabilizing light distribution. .
KR1020070030965A 2007-03-29 2007-03-29 a LED control unit for a vehicle KR101263031B1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
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KR100908733B1 (en) * 2008-10-17 2009-07-22 (주)이노셈코리아 The fluorescent light with led
KR101433475B1 (en) * 2012-12-07 2014-08-22 넥스콘 테크놀러지 주식회사 Method of breaking leakage current for electric bike battery pack
KR101593376B1 (en) * 2015-07-29 2016-02-11 양우석 Apparatus for reducing the standby power consumption of lamp which uses battery
KR20210112126A (en) * 2020-03-04 2021-09-14 현대모비스 주식회사 Apparatus for optimization of input lighting signal and method thereof

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KR20150143236A (en) 2014-06-12 2015-12-23 이동원 LED Lamp for Vehicle having high efficiency
KR20150143231A (en) 2014-06-12 2015-12-23 이동원 LED Lamp for Vehicle

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100908733B1 (en) * 2008-10-17 2009-07-22 (주)이노셈코리아 The fluorescent light with led
KR101433475B1 (en) * 2012-12-07 2014-08-22 넥스콘 테크놀러지 주식회사 Method of breaking leakage current for electric bike battery pack
KR101593376B1 (en) * 2015-07-29 2016-02-11 양우석 Apparatus for reducing the standby power consumption of lamp which uses battery
WO2017018785A1 (en) * 2015-07-29 2017-02-02 양우석 Device for reducing standby power consumption of lighting using battery
KR20210112126A (en) * 2020-03-04 2021-09-14 현대모비스 주식회사 Apparatus for optimization of input lighting signal and method thereof
US11524623B2 (en) 2020-03-04 2022-12-13 Hyundai Mobis Co., Ltd. Input lighting signal optimization device and method

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