KR20010002431A - Light and darkness grade automatic controller of lighting apparatus for vehicle - Google Patents

Light and darkness grade automatic controller of lighting apparatus for vehicle Download PDF

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Publication number
KR20010002431A
KR20010002431A KR1019990022242A KR19990022242A KR20010002431A KR 20010002431 A KR20010002431 A KR 20010002431A KR 1019990022242 A KR1019990022242 A KR 1019990022242A KR 19990022242 A KR19990022242 A KR 19990022242A KR 20010002431 A KR20010002431 A KR 20010002431A
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KR
South Korea
Prior art keywords
vehicle
transistor
current
illumination
comparing
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KR1019990022242A
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Korean (ko)
Inventor
이종국
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조영석
한국브이디오한라 주식회사
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Priority to KR1019990022242A priority Critical patent/KR20010002431A/en
Publication of KR20010002431A publication Critical patent/KR20010002431A/en

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Classifications

    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05BLOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B3/00Fastening knobs or handles to lock or latch parts

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)

Abstract

PURPOSE: An automatic illumination controller is provided to prevent a driver' inconvenience due to the manual control of an illumination device when in traveling, by installing a circuit which controls automatically the illumination of a vehicle. CONSTITUTION: An automatic controller comprises: a photo diode(PD) to change the current amount as the outside illumination; a reversal amplifier(1) to include the resistance(R1)(R2) and an outside amp(OP1) reversing and amplifying the current amount of the photo diode; a comparing part(2) to include the resistance(R3, R4, R5) and a comparer(CP1) comparing the datum voltage with the output voltage of the reversal amplifier; a transistor(Q) to be controlled as the output of the comparing part; a dashboard illuminator(3) to be controlled in stages by the current intensity inputted from the transistor.

Description

차량의 조명기구 조도 자동조절 장치 {Light and darkness grade automatic controller of lighting apparatus for vehicle}Light and darkness grade automatic controller of lighting apparatus for vehicle}

본 발명은 차량에 관한 것으로, 특히 포토 다이오드를 이용하여 외부의 밝기에 따라 차량용 계기판의 조도를 자동으로 조절할 수 있도록 하여 수동 조작에 따른 운전시의 산만함을 방지함으로써 차량을 안전하게 운행할 수 있도록 한 차량의 조명기구 조도 자동조절 장치에 관한 것이다.The present invention relates to a vehicle, and in particular, by using a photodiode to automatically adjust the illuminance of the instrument panel according to the brightness of the outside to prevent distraction during driving by manual operation so that the vehicle can be safely operated The present invention relates to a device for automatically adjusting illumination intensity of a vehicle.

일반적으로 차량에는 실내등,계기판 조명등 등의 실내 조명장치가 구비되어 있어 특히 야간 주행시 운전의 편리함을 더하고 있다.In general, the vehicle is equipped with an indoor lighting device such as an indoor light, an instrument board light, etc., in particular, it adds convenience of driving at night.

종래에는 도 1에 도시된 바와같이 전원단(Vcc)에 다수의 조명등으로 된 계기판 조명부(10)가 구비되고, 상기 전원단(Vcc)에는 오실레이터(15)와 트랜지스터(Q)로 된 레오스타트(20)가 접속되어 운전자가 상기 레오스타트(15)를 단계적으로 수동 조작하는 수단에 의해 계기판 조명부(10)의 밝기를 조절할 수 있었다.Conventionally, as shown in FIG. 1, an instrument panel lighting unit 10 including a plurality of lamps is provided at a power supply terminal Vcc, and the power supply terminal Vcc includes a leotard including an oscillator 15 and a transistor Q. 20) was connected so that the driver could adjust the brightness of the instrument panel lighting unit 10 by means of manual operation of the leostart 15 step by step.

또한, 테일 스위치를 이용한 2단 감광회로가 구비되어 있어 야간에 운전자가 임의대로 테일 스위치를 조작하여 조도를 감소시킬 수 있었다.In addition, a two-stage photosensitive circuit using a tail switch is provided so that the driver can arbitrarily operate the tail switch at night to reduce illuminance.

그러나 이와같은 종래 차량의 실내 조명 장치에 있어서는, 운전자가 운전하면서 수동적으로 조명장치의 조도를 조작하므로 운행이 산만해져 사고를 유발할 수 있는 문제가 있었다.However, in such an indoor lighting device of a conventional vehicle, there is a problem that the driver may manually operate the illumination of the lighting device while driving, causing distractions and causing an accident.

본 발명은 이와같은 종래의 문제점을 해결하기 위하여 안출한 것으로, 본 발명의 목적은, 차량의 조도를 자동으로 조절할 수 있는 회로를 제공하여 운전자가 운전중 수동으로 조도를 조작하지 않도록 함으로써 부주의로 인한 차량 사고를 미연에 방지하도록 한 차량의 조명기구 조도 자동조절 장치를 제공하는데 있다.The present invention has been made to solve such a conventional problem, the object of the present invention is to provide a circuit that can automatically adjust the illuminance of the vehicle so that the driver does not operate the illuminance manually while driving, The present invention provides an automatic lighting intensity control device for a vehicle to prevent a vehicle accident in advance.

도 1은 종래 조명기구의 회로도1 is a circuit diagram of a conventional lighting fixture

도 2는 본 발명에 따른 조명기구의 조도 자동조절회로도2 is an automatic illuminance control circuit diagram of a lighting device according to the present invention

〈도면의 주요 부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>

1:반전증폭부 2:비교부1: reverse amplifier 2: comparison

3:계기판 조명부 R1-R7:저항3: Instrument lighting part R1-R7: Resistance

Q:트랜지스터 OP:오피앰프Q: Transistor OP: Op amp

CP:비교기CP: Comparator

이와같은 목적을 달성하기 위한 본 발명은 외부 밝기에 따라 흐르는 전류량이 변화하는 포토 센서와, 상기 포토 센서의 전류량을 반전 증폭시키는 반전 증폭부와, 상기 반전 증폭부의 출력신호와 기준전압을 비교하는 비교수단과, 상기 비교수단의 출력에 따라 전류의 흐름이 제어되는 트랜지스터와, 상기 트랜지스터로부터 입력되는 전류의 세기에 의해 단계적으로 점등되는 계기판 조명부로 구성함을 특징으로 한다.In order to achieve the above object, the present invention compares a photo sensor in which the amount of current flowing according to the external brightness is changed, an inverting amplifier for inverting and amplifying the amount of current of the photo sensor, and comparing the output signal with a reference voltage of the inverting amplifier. And means, a transistor for controlling the flow of current in accordance with the output of the comparing means, and an instrument panel lighting unit which is lit in stages by the intensity of the current input from the transistor.

이하, 본 발명의 실시예를 첨부된 도면을 참고로 하여 상세히 설명하면 다음과 같다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명의 회로도로, 외부 밝기에 따라 흐르는 전류량이 변화하는 포토 다이오드(PD)와, 상기 포토 다이오드(PD)의 전류량을 반전 증폭시키는 저항(R1)(R2), 오피 앰프(OP1)로 된 반전 증폭부(1)와, 상기 반전 증폭부(1)의 출력신호와 기준전압을 비교하는 저항(R4)(R5) 및 비교기(CP1)로 된 비교부(2)와, 상기 비교부(2)의 출력에 따라 전류의 흐름이 제어되는 트랜지스터(Q)와, 상기 트랜지스터(Q)로부터 입력되는 전류의 세기에 의해 단계적으로 점등되는 계기판 조명부(3)로 구성된 것이다.2 is a circuit diagram of the present invention, a photodiode (PD) in which the amount of current flowing in accordance with the external brightness, a resistor (R1) (R2), op amp (OP1) for inverting and amplifying the amount of current of the photodiode (PD) An inverting amplifying unit 1, a comparing unit 2 comprising resistors R4, R5 and comparator CP1 for comparing the output signal of the inverting amplifying unit 1 with a reference voltage; The transistor Q which controls the flow of current according to the output of (2), and the instrument panel illumination part 3 which is lighted in stages by the intensity of the electric current input from the said transistor Q are comprised.

이와같이 구성된 본 발명의 작용을 설명하면 다음과 같다.Referring to the operation of the present invention configured as described above is as follows.

먼저, 야간이 되어 차량의 주위가 어두워지면 포토 다이오드(PD)로 유입되는 빛이 약해져 전류량이 작아지게 되며 이렇게 작아진 전류량이 반전증폭부(1)를 통하여 증폭되어 비교부(2)의 비교기(CP) 비반전단자(+)에 입력된다.First, when the surroundings of the vehicle become dark at night, the light flowing into the photodiode PD becomes weak and the amount of current decreases. Thus, the reduced amount of current is amplified through the inverting amplifier 1 and the comparator of the comparator 2 ( CP) is input to the non-inverting terminal (+).

따라서, 이 비반전단자(+)에 입력된 전압과 비교기(CP)의 반전단자(-)에 인가된 기준전압이 비교되는데 이때에는 비반전단자(+)에 입력되는 값이 크므로 비교기(CP)의 출력은 하이레벨이 되어 트랜지스터(Q)를 통하여 흐르는 전류가 많아지게된다Accordingly, the voltage input to the non-inverting terminal (+) is compared with the reference voltage applied to the inverting terminal (-) of the comparator CP. In this case, the value input to the non-inverting terminal (+) is large, so that the comparator CP ) Output becomes high level, which increases the current flowing through the transistor Q.

그러면 트랜지스터(Q)의 콜렉터를 통하여 흐르는 전류가 많아져 자동적으로 계기판 조명부(3)의 밝기가 밝아지게 되는 것이다.Then, the current flowing through the collector of the transistor Q increases, so that the brightness of the instrument panel lighting unit 3 automatically becomes bright.

한편, 상기와 반대로 차량의 주위가 밝아지면 포토 다이오드(PD)로 유입되는 빛이 많아져 전류량이 커지게 되며 이렇게 커진 전류량이 반전증폭부(1)를 통하여 반전증폭되므로 비교기(CP)의 비반전단자(+)에는 기준전압보다 작은 전압이 입력된다.On the other hand, when the surroundings of the vehicle become bright, the amount of light flowing into the photodiode PD increases, thereby increasing the amount of current. A voltage smaller than the reference voltage is input to the terminal (+).

따라서, 비교기(CP)의 비반전단자(+)에 입력된 전압과 반전단자(-)에 인가된 기준전압이 비교되는데 이때에는 반전단자(-)에 입력되는 값이 크므로 비교기(CP)의 출력은 로우레벨이 되어 트랜지스터(Q)의 베이스로 흐르는 전류가 적어지게 된다.Accordingly, the voltage input to the non-inverting terminal (+) of the comparator CP and the reference voltage applied to the inverting terminal (-) are compared. In this case, since the value input to the inverting terminal (-) is large, The output is at a low level so that the current flowing to the base of the transistor Q is less.

그러면 트랜지스터(Q)의 콜렉터를 통하여 흐르는 전류가 적어져 자동적으로 계기판 조명부(3)의 밝기가 어두워지게 되는 것이다.Then, the current flowing through the collector of the transistor Q decreases and the brightness of the instrument panel lighting unit 3 is automatically darkened.

즉, 본 발명은 포토 다이오드(PD)를 사용하여 자동적으로 차량 주위의 밝기를 감지하여 계기판 조명부(3)를 제어할 수 있는 것이다.That is, the present invention can control the instrument panel lighting unit 3 by automatically detecting the brightness around the vehicle using the photodiode PD.

이상에서 설명한 바와같은 본 발명은 포토 다이오드(PD)를 이용하여 외부의 밝기에 따라 계기판의 조도를 자동으로 조절할 수 있어 운전자가 수동으로 조도를 조정할 필요가 없어지므로 사고를 미연에 방지할 수 있으며, 기존과 같이 레오스타트를 이용한 다단 감광회로를 사용하지 않으므로 원가를 절감할 수 있는 효과가 있다.As described above, the present invention can automatically adjust the illuminance of the instrument panel according to the external brightness using a photodiode (PD), so that the driver does not need to manually adjust the illuminance, thereby preventing an accident in advance. As the conventional multi-stage photosensitive circuit using Leostart is not used, the cost can be reduced.

Claims (1)

외부 밝기에 따라 흐르는 전류량이 변화하는 포토 다이오드(PD)와,Photodiode (PD) which changes the amount of current flowing according to the external brightness, 상기 포토 다이오드의 전류량을 반전 증폭시키는 저항(R1)(R2), 오피 앰프(OP1)로 된 반전 증폭부(1)와,An inverting amplifier 1 consisting of resistors R1 (R2) and op amps OP1 for inverting and amplifying the current amount of the photodiode; 상기 반전 증폭부(1)의 출력신호와 기준전압을 비교하는 저항(R3-R5) 및 비교기(CP1)로 된 비교부(2)와,A comparator 2 comprising resistors R3-R5 and comparator CP1 for comparing the output signal of the inverted amplifier 1 with a reference voltage; 상기 비교부(2)의 출력에 따라 전류의 흐름이 제어되는 트랜지스터(Q)와,A transistor (Q) for controlling the flow of current in accordance with the output of the comparing unit (2), 상기 트랜지스터(Q)로부터 입력되는 전류의 세기에 의해 단계적으로 밝기가 조절되는 계기판 조명부(3)를 포함하여 구성된 것을 특징으로 하는 차량의 조명기구 조도 자동조절 장치.Illumination illuminance auto-adjustment device for a vehicle, characterized in that it comprises a instrument panel lighting unit (3) the brightness is adjusted in stages by the intensity of the current input from the transistor (Q).
KR1019990022242A 1999-06-15 1999-06-15 Light and darkness grade automatic controller of lighting apparatus for vehicle KR20010002431A (en)

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Application Number Priority Date Filing Date Title
KR1019990022242A KR20010002431A (en) 1999-06-15 1999-06-15 Light and darkness grade automatic controller of lighting apparatus for vehicle

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Application Number Priority Date Filing Date Title
KR1019990022242A KR20010002431A (en) 1999-06-15 1999-06-15 Light and darkness grade automatic controller of lighting apparatus for vehicle

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002083315A1 (en) * 2001-04-10 2002-10-24 E-On Light Co., Ltd. Air purification device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002083315A1 (en) * 2001-04-10 2002-10-24 E-On Light Co., Ltd. Air purification device

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