KR890002735Y1 - Lighting control devices for dashboard - Google Patents
Lighting control devices for dashboard Download PDFInfo
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- KR890002735Y1 KR890002735Y1 KR2019860009965U KR860009965U KR890002735Y1 KR 890002735 Y1 KR890002735 Y1 KR 890002735Y1 KR 2019860009965 U KR2019860009965 U KR 2019860009965U KR 860009965 U KR860009965 U KR 860009965U KR 890002735 Y1 KR890002735 Y1 KR 890002735Y1
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- 239000003990 capacitor Substances 0.000 claims description 5
- 230000004438 eyesight Effects 0.000 description 6
- 238000005286 illumination Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 208000003464 asthenopia Diseases 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
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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
- B60Q3/10—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors for dashboards
- B60Q3/16—Circuits; Control arrangements
- B60Q3/18—Circuits; Control arrangements for varying the light intensity
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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
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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
내용 없음.No content.
Description
제1도는 본 고안의 회로도.1 is a circuit diagram of the present invention.
제2도는 본 고안에 따른 회로의 출력파형도이다.2 is an output waveform diagram of a circuit according to the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1, 2 : 전원선 3 : 가변단1, 2: power line 3: variable stage
4 : OP앰프 5 : 부하램프4: OP amplifier 5: Load lamp
BA : 전원 VR : 가변저항BA: Power VR: Variable resistor
R1∼R7: 저항 C1, C2: 콘덴서R 1 to R 7 : resistance C 1 , C 2 : condenser
L1: 코일 ZD : 제너다이오드L 1 : Coil ZD: Zener Diode
본 고안은 자동차 계기판의 조도를 조절해주는 장치에 관한 것으로, 특히 OP앰프 및 트랜지스터등을 사용하여 적은 전력손실과 높은 변환효율로 자동차 계기판의 조도를 조절할 수 있도록 된 조절장치에 관한 것이다.The present invention relates to a device for adjusting the illuminance of an automobile instrument panel, and more particularly, to an apparatus for adjusting the illuminance of an automobile instrument panel with a low power loss and a high conversion efficiency by using an OP amplifier and a transistor.
자동차의 계기판은 야간운행시 계기판의 지시상태를 관측할 수 있도록 다수의 램프를 설치하여 계기의 작동상태를 나타내주도록 되어 있는데, 이에 대하여 종래에는 상기 계기판의 조명램프가 일정조도로 고정되어져 있기 때문에 상황에 따른 적용이 용이하지 못하였고, 또 운전자에게 시력상의 간섭을 주는 등의 불편이 있었다. 즉, 자동차의 실내등이 미비한 가운데, 특히 고속버스등과 같이 실내등이 소등된 상태에서 야간 주행을 할 경우에는 도심이나 고속도로등과 같은 주변환경에 따라, 또는 눈이 덮히거나 안개가 끼일 경우와 같은 날씨변화에 따라 운전자의 시력적용이 달라지게 되는데, 계기판의 조명이 밝을 경우 운전자의 시야를 간섭할 뿐만 아니라 계기판의 밝기가 고정됨으로 인해 눈이 쉬 피로해지고, 시력상의 장애를 일으키게 되는 문제점이 있었다.The instrument panel of the car is installed to indicate the operating state of the instrument by installing a plurality of lamps to observe the indication state of the instrument panel during night operation, in contrast to the conventional situation because the illumination lamp of the instrument panel is fixed to a certain intensity The application was not easy, and there was inconvenience such as giving a visual interference to the driver. In other words, when driving at night while the interior lights of cars are inadequate, especially when the interior lights are turned off such as highway buses, the weather may be caused by the surrounding environment such as the city center or the highway, or by snow or fog. According to the change, the application of the driver's eyesight is different. When the light of the instrument panel is bright, not only does it interfere with the driver's vision but also the eyes are tired due to the fixation of the instrument panel.
따라서, 운전자의 시야를 보호하고 눈의 피로를 방지하여 시력상의 장애요인을 제거함으로써 안전 운행을 할 수 있도록 하기위해서는 운전자의 시력에 따라서, 또는 주변환경에 따라서, 계기판용 조명 램프의 조도를 조절해줄 필요가 있는데, 램프의 조도를 조절하기 위해서는 램프에 가해지는 전압을 가변시켜 주어야 한다. 그런데 이를 위해서는 통상적으로 가변저항을 램프와 직렬로 연결하여 주거나 트랜지스터를 직렬로 연결하여 그 베이스전압을 조절하도록 하는 방법이 사용되어지고 있다. 여기서 가변저항을 부하램프에 직렬로 연결해주는 방법은 가변저항의 크기게 따라 램프에 가해지는 전류를 변화시켜주는 것으로서 전력손실이 매우 클 뿐 아니라 정밀제어에는 부적합하다는 단점이 있으며, 또 트랜지스터를 이용하는 방법은 트랜지스터의 베이스에 인가되는 전압을 조절함으로써 트랜지스터를 통하여 부하에 가해지는 전류를 변화시켜주는 것으로 트랜지스터의 전력손실이 크고 변환효율이 좋지 않으며, 큰 방열면적이 필요하기 때문에 정밀제어용으로 부적합하다는 단점이 있다.Therefore, in order to protect the driver's vision and prevent eye fatigue and to operate safely by eliminating the obstacle of vision, the illumination of the instrument panel lighting lamp is adjusted according to the driver's vision or the surrounding environment. It is necessary to change the voltage applied to the lamp in order to adjust the illuminance of the lamp. However, in order to accomplish this, a method of connecting a variable resistor in series with a lamp or connecting a transistor in series to adjust the base voltage is used. Here, the method of connecting the variable resistor to the load lamp in series is to change the current applied to the lamp according to the size of the variable resistor, which has the disadvantage of not only very large power loss but also unsuitable for precise control. Is to change the current applied to the load through the transistor by adjusting the voltage applied to the base of the transistor. It is not suitable for precise control because the power loss of the transistor is large, the conversion efficiency is not good, and the large heat dissipation area is required. have.
따라서, 본 고안은 상기와 같은 조도 조절의 필요성을 충족시키는 한편, 종래의 전압조절장치의 단점을 개선하기 위하여 OP앰프와 트랜지스터를 이용하되 OP앰프의 정입력단 전압을 조절하여 OP앰프의 출력을 펄스폭변조방식에 의해 변조시켜주고, 이 펄스에 의해 트랜지스터를 통해 부하램프에 인가되는 전압을 제어해줌으로써 전력손실을 극소화하고 변환효율을 높여줄 뿐만 아니라 조명램프의 조도를 정밀하게 제어할 수 있도록 된 자동차계기판의 조도 조절장치를 제공하는데 그 목적이 있다.Therefore, while the present invention satisfies the necessity of the above-described illuminance control, the OP amplifier and the transistor are used to improve the disadvantages of the conventional voltage regulator, but the output voltage of the OP amplifier is pulsed by adjusting the positive input terminal voltage of the OP amplifier. By modulating by the width modulation method and controlling the voltage applied to the load lamp through the transistor by this pulse, it is possible to minimize the power loss and improve the conversion efficiency and to precisely control the illumination of the lighting lamp. An object of the present invention is to provide an illumination control device for an automotive dashboard.
이하 본 고안의 구성 및 작용효과를 첨부된 예시도면에 의거 상세히 설명하면 다음과 같다.Hereinafter will be described in detail based on the accompanying drawings and the configuration and effect of the present invention.
본 고안은 전원선(1, 2)의 양단간에 저항(R1)과 가변저항(VR) 및 저항(R2)을 직렬로 연결하고, 제너다이오드(ZD)와 콘덴서(C1)를 각각 병렬로 연결하되, 상기 가변저항(VR)의 가변단(3)은 OP앰프(4)의 정입력단에 연결되며, 상기 OP앰프(4)의 부입력단은 콘덴서(C2)를 통해 전원선(2)에 연결되고, OP앰프(4)의 출력단은 트랜지스터(Q1)의 베이스에 연결되는 한편, 상기 OP앰프(4)의 출력단은 저항(R3)을 통해 부입력단으로 궤환되고, 저항(R4)을 통해 정입력단으로 궤환되며, 상기 트랜지스터(Q1)의 콜렉터단은 트랜지스터(Q2)의 베이스에 연결되고, 에미터단은 저항(R5)을 통해 전원선(2)에 연결되되, 트랜지스터(Q2)의 에미터단은 저항(R6)을 통해 전원선(1)에 연결되고, 콜렉터단은 코일(L1)을 통해 부하램프(5)에 연결된 구조로 되어 있다.The present invention connects a resistor (R 1 ), a variable resistor (VR) and a resistor (R 2 ) in series between both ends of the power supply lines (1, 2), and parallel the zener diode (ZD) and the capacitor (C 1 ), respectively. The variable terminal 3 of the variable resistor VR is connected to the positive input terminal of the OP amplifier 4, and the negative input terminal of the OP amplifier 4 is connected to the power line 2 through the capacitor C 2 . ) And the output terminal of the OP amplifier 4 is connected to the base of the transistor Q 1 , while the output terminal of the OP amplifier 4 is fed back to the negative input terminal through the resistor R 3 and the resistor R 4) is fed back to the positive input terminal through a collector terminal of the transistor (Q 1) is connected to the base of the transistor (Q 2), the emitter teodan is doedoe connected to a power supply line (2) via a resistor (R 5), The emitter stage of the transistor Q 2 is connected to the power supply line 1 through the resistor R 6 , and the collector stage is connected to the load lamp 5 through the coil L 1 .
미설명 부호 R7은 저항, BA는 전원이다.Reference numeral R 7 is a resistor and BA is a power supply.
상기와 같은 구조로 된 본 고안의 회로장치는 반도체 소자를 사용하므로 장치의 수명이 길고 안정될 뿐만 아니라 OP앰프의 출력펄스에 따라 트랜지스터(Q1)(Q2)가 구동되므로 전력 손실이 매우 적고 변환효율이 매우 양호하며, 특히 가변저항(VR)을 제외한 상기 회로를 단일 유니트로 몰드화시켜줄 경우 부피가 소형화되고 방수 및 내진성이 강해지게 된다.The circuit device of the present invention having the structure as described above uses a semiconductor device, so that the lifespan of the device is long and stable, and the transistor Q 1 and Q 2 are driven in accordance with the output pulse of the op amp so that the power loss is very low. The conversion efficiency is very good, and in particular, when the circuit except for the variable resistance VR is molded into a single unit, the volume is miniaturized, and the waterproof and the shockproof are strong.
상기와 같은 구조를 갖는 본 고안의 작용을 제1도의 회로도를 통해 설명하면, 본 고안은 OP앰프(4)의 정입력단에 인가되는 전압이 가변저항(VR)에 의해 조절되어짐에 따라 OP앰프(4)의 출력펄스의 주파수 및 듀티사이클이 변화되어 트랜지스터(Q1)(Q2)를 제어함으로써 부하램프(5)에 가해지는 전압을 조절할 수 있도록 되어 있다. 이때 전원(1, 2) 양단간에는 정전압용 제너다이오드(ZD)와 콘덴서(C1)를 설치하여 인가전압을 안정화시켜주는 한편, OP앰프(4)의 출력단에는 풀업(Pull-Up)저항을 설치하여 OP앰프의 출력에 따라 트랜지스터(Q1)가 확실하게 동작될 수 있도록 해준다.Referring to the operation of the present invention having the structure as described above with reference to the circuit diagram of Figure 1, the present invention, the voltage applied to the positive input terminal of the OP amplifier 4 is adjusted by the variable resistor (VR) OP amplifier ( The frequency and duty cycle of the output pulse of 4) are changed so that the voltage applied to the load lamp 5 can be adjusted by controlling the transistors Q 1 and Q 2 . At this time, a constant voltage zener diode (ZD) and a capacitor (C 1 ) are installed between both ends of the power supply (1, 2) to stabilize the applied voltage, while a pull-up resistor is installed at the output terminal of the OP amplifier (4). This ensures that transistor Q 1 can operate reliably according to the output of the op amp.
상기 동작을 좀더 상세히 설명하면 전원(BA)로부터 전원선(1, 2)을 통해 인가된 전압을 저항(R1)(R2)과 가변저항(VR)을 통해 분압되어 OP앰프(4)의 정입력단에 인가되는데, 이때 상기 저항(R1)(R2) 및 가변저항(VR)의 크기를 충분히 크게하여 전력의 손실을 막아주고, 가변저항(VR)의 가변단(3)을 통해 넓은 범위의 전압레벨을 OP앰프(4)에 인가시켜줄 수 있게 된다. 한편, OP앰프(4)는 콘덴서(C2)와 저항(R3)(R4)을 통해 펄스파를 발생시켜 주는데, 상기 펄스파는 가변단(3)을 통해 OP앰프(4)의 정입력단으로 입력되는 전압레벨에 따라 그 주파수와 듀티사이클이 변화되어지는 바, 가변저항(VR)을 최대로 할 경우 제2a도에 도시된 바와 같이 거의 입력전압에 가까운 직류전압이 출력되어지게 되고, 가변저항(VR)을 조금 낮춰주면 제2b도에 도시된 바와 같이 진폭이 제2a도와 같으면서 듀티사이클이 비교적 큰 전압펄스파형이 출력되어지게 되며, 가변저항(VR)을 더욱 낮춰줌에 따라 출력파형은 주파수가 다소 증가하는 한편, 듀티사이클이 감소하여 제2c도와 같이 나타나게 되고, 가변저항을 최소로 할 경우에는 제2d도와 같이 출력이 "0"이 되어진다.In more detail, the voltage applied through the power supply lines 1 and 2 from the power supply BA is divided by the resistors R 1 and R 2 and the variable resistor VR so that the operation of the OP amplifier 4 is performed. It is applied to the positive input terminal, in which the size of the resistor (R 1 ) (R 2 ) and the variable resistor (VR) is sufficiently large to prevent the loss of power, and wide through the variable stage (3) of the variable resistor (VR) The voltage level of the range can be applied to the OP amplifier (4). On the other hand, the OP amplifier 4 generates a pulse wave through the capacitor (C 2 ) and the resistor (R 3 ) (R 4 ), the pulse wave is the positive input terminal of the OP amplifier 4 through the variable stage (3) The frequency and duty cycle change according to the input voltage level. When the variable resistor VR is maximized, a DC voltage almost close to the input voltage is output as shown in FIG. When the resistance VR is slightly lowered, as shown in FIG. 2B, a voltage pulse waveform having a relatively high duty cycle with an amplitude equal to that of FIG. 2A is output. As the variable resistance VR is further lowered, the output waveform is reduced. While the frequency slightly increases, the duty cycle decreases to appear as shown in FIG. 2C. When the variable resistor is minimized, the output becomes "0" as shown in FIG. 2D.
이와 같이 가변저항에 의해 OP앰프(4)의 출력파형이 달라지게되고, 그에 따라 OP앰프(4)의 출력단에 연결된 트랜지스터(Q1)가 온·오프 동작을 반복하면서 트랜지스터(Q2)를 온·오프시켜주게 되고, 전원(BA)으로부터의 전압을 트랜지스터(Q2)의 제어를 받으면서 저항(R6)과 코일(L1)을 통해 부하램프(5)로 인가되어지게 된다. 이때 코일(L1)은 고주파 특성이 우수한 페라이트코어를 이용하여 구형파를 평활한 파형으로 만들어줌으로써 부하램프(5)를 보호해주게 된다.As such, the output waveform of the OP amplifier 4 varies according to the variable resistor, and accordingly, the transistor Q 1 connected to the output terminal of the OP amplifier 4 turns on and off the transistor Q 2 while repeating the on / off operation. The voltage from the power supply BA is applied to the load lamp 5 through the resistor R 6 and the coil L 1 under the control of the transistor Q 2 . At this time, the coil (L 1 ) is to protect the load lamp (5) by making the square wave to a smooth waveform using a ferrite core excellent in high frequency characteristics.
한편 상기 부하램프(5)는 자동차계기판의 속도계와 타코미터와 같은 각동 계기를 비추는 램프로서 필요에 따라 직렬 또는 병렬로 연결되어져 있다.On the other hand, the load lamp 5 is a lamp that illuminates an angle gauge such as a tachometer and a tachometer of an automobile dashboard and is connected in series or in parallel as necessary.
상기와 같은 구성 및 작용에 의해 본 고안은 자동체계기판의 조명램프에 인가되는 전압을 조절하여 그 조도를 조절해줌으로써 운전자의 시력장애나 피로의 원인을 제게해주어 안전운행을 할 수 있도록 할 뿐만 아니라 전압조절에 따른 전력손실을 극소화하고 변환효율을 높여 주며, 조명램프의 조도를 정밀하게 제어할 수 있고, 또한 가변저항(VR)을 제외한 나머지 각 소자들을 몰드화시켜 단일의 유니트로 형성시켜줄 경우 부피를 소형화할 수 있는 한편, 방수 및 내진성을 향상 시켜줄 수 있는 효과가 있다.By the configuration and action as described above, the present invention adjusts the voltage applied to the lighting lamp of the automatic system board to adjust the illuminance, thereby not only causing the driver's vision impairment or fatigue, but also driving safety. Minimizes power loss due to voltage control, improves conversion efficiency, precisely controls illumination of illumination lamp, and molds each element except the variable resistor (VR) to form a single unit. While it can be miniaturized, there is an effect that can improve the waterproof and shockproof.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019860009965U KR890002735Y1 (en) | 1986-07-11 | 1986-07-11 | Lighting control devices for dashboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019860009965U KR890002735Y1 (en) | 1986-07-11 | 1986-07-11 | Lighting control devices for dashboard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR880002287U KR880002287U (en) | 1988-04-08 |
| KR890002735Y1 true KR890002735Y1 (en) | 1989-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019860009965U KR890002735Y1 (en) | 1986-07-11 | 1986-07-11 | Lighting control devices for dashboard |
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| Country | Link |
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| KR (1) | KR890002735Y1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100593633B1 (en) * | 2001-03-29 | 2006-06-30 | 주식회사 엘지이아이 | Dryer heater control device and control method |
| KR100488402B1 (en) * | 2003-01-16 | 2005-05-11 | 현대모비스 주식회사 | Backlight device for vehicle |
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1986
- 1986-07-11 KR KR2019860009965U patent/KR890002735Y1/en not_active IP Right Cessation
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| Publication number | Publication date |
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| KR880002287U (en) | 1988-04-08 |
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