KR19980022750A - Automotive back glass heating wire control circuit - Google Patents

Automotive back glass heating wire control circuit Download PDF

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Publication number
KR19980022750A
KR19980022750A KR1019960042034A KR19960042034A KR19980022750A KR 19980022750 A KR19980022750 A KR 19980022750A KR 1019960042034 A KR1019960042034 A KR 1019960042034A KR 19960042034 A KR19960042034 A KR 19960042034A KR 19980022750 A KR19980022750 A KR 19980022750A
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South Korea
Prior art keywords
heating wire
back glass
decs
relay
control module
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KR1019960042034A
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Korean (ko)
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KR100199448B1 (en
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이영배
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양재신
대우자동차 주식회사
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Priority to KR1019960042034A priority Critical patent/KR100199448B1/en
Publication of KR19980022750A publication Critical patent/KR19980022750A/en
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/84Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B60R16/0231Circuits relating to the driving or the functioning of the vehicle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60SSERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00Cleaning of vehicles
    • B60S1/02Cleaning windscreens, windows or optical devices
    • B60S1/023Cleaning windscreens, windows or optical devices including defroster or demisting means
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2231/00Applications
    • H01H2231/026Car

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Resistance Heating (AREA)

Abstract

본 발명은 백글라스의 열선을 작동시킴에 있어서 운전자의 필요에 따라 작동시간을 다르게 선택할 수 있도록 하는 자동차 백글라스 열선 제어회로에 관한 것이다.The present invention relates to a vehicle back glass hot wire control circuit that enables to select a different operating time according to the driver's needs in operating the hot wire of the back glass.

본 발명에 따르면, 전원을 단속하는 열선스위치(10)의 전단과 릴레이(RY)의 코일(RYa) 및 가동접점(RYb)의 일단이 공통접속되며, 상기 열선스위치(10)의 후단은 소정시간동안 백글라스의 열선(20)을 접지하도록 스위칭제어하며 전기제어모듈(DECS)의 입력단자에 접속되고, 상기 전기제어모듈(DECS)의 일출력단자에 릴레이(RY)의 코일(RYa)의 타단이 접속되며, 상기 릴레이(RY)의 가동접점(RYb)의 타단에 백글라스에 내장되는 열선(20)이 접속되어 구성된 회로에 있어서, 상기 열선스위치(10)에는 두 개이상의 절환되는 후단접점(10a,10b))이 구비되고, 상기 전기제어모듈(DECS)에는 작동타임이 서로 다르게 설정된 두 개 이상의 타이머(T1,T2)가 내장되며 이 두 타이머(T1,T2)를 트리거하는 두 개 이상의 입력단자가 인출되어 상기 열선스위치(10)의 두 후단접점(10a,10b)으로 접속되어 구성됨을 특징으로 하는 자동차 백글라스 열선 제어회로가 제공된다.According to the present invention, the front end of the hot wire switch 10 for interrupting power and the one end of the coil RYa and the movable contact RYb of the relay RY are commonly connected, and the rear end of the hot wire switch 10 has a predetermined time. The switching control to ground the heating wire 20 of the back glass while being connected to the input terminal of the electrical control module (DECS), the other end of the coil (RYa) of the relay (RY) to one output terminal of the electrical control module (DECS) Is connected, and a circuit in which a heating wire 20 embedded in the back glass is connected to the other end of the movable contact RYb of the relay RY, wherein the heating wire switch 10 has two or more switched rear-end contacts ( 10a, 10b)), and the electric control module DECS has two or more timers T1 and T2 with different operating times set therein and two or more inputs for triggering these two timers T1 and T2. The terminal is drawn out and connected to the two rear end contacts 10a and 10b of the hot wire switch 10. The car back glass heating coil control circuit, characterized by configured is provided.

Description

자동차 백글라스 열선 제어회로Automotive back glass heating wire control circuit

본 발명은 자동차 백글라스 열선 제어회로에 관한 것으로, 좀더 상세하게는 백글라스의 열선을 작동시킴에 있어서 운전자의 필요에 따라 작동시간을 다르게 선택할 수 있도록 하는 자동차 백글라스 열선 제어회로에 관한 것이다.The present invention relates to an automobile back glass hot wire control circuit, and more particularly, to an automobile back glass hot wire control circuit for enabling an operation time to be differently selected according to a driver's needs in operating the hot glass of the back glass.

일반적으로 자동차의 글라스에는 차실공기와 외부공기의 온도차에 의해 결로현상이 가 발생하며, 특히 겨울철이나 우천시에는 글라스의 내측면에 결로가 발생하여 시야를 가리게 되므로 운전에 큰 지장을 주게 된다. 특히 백글라스에는 이러한 결로현상을 제거하기 위해서 전기적으로 가열되는 열선이 내장되고 있는데, 이 열선의 작동을 제어하기 위한 회로로 도시된 도 1을 참조하면, 전원을 단속하는 열선스위치(10)의 전단과 릴레이(RY)의 코일(RYa) 및 가동접점(RYb)의 일단이 공통접속되며, 상기 열선스위치(10)의 후단은 차의 센츄럴도어록, 열선 등의 여러 전기계통을 접지시킴으로써 스위칭제어하며 소정의 작동타임을 갖는 타이머(T1)도 내장된 전기제어모듈(DECS)의 입력단자에 접속되고, 상기 전기제어모듈(DECS)의 일출력단자에 릴레이(RY)의 코일(RYa)의 타단이 접속되며, 상기 릴레이(RY)의 가동접점(RYb)의 타단에 백글라스에 내장되는 열선(20)이 접속되어 구성된다. 상기 전기제어모듈(DECS)의 출력단자에는 운전석 계기판 상에서 점등되어 열선(20)의 작동을 표시하는 열선램프(L1)가 병렬접속된다. 이와같이 구성되어 열선스위치(10)의 조작에 따라 전기제어모듈(DECS)이 릴레이(RY)의 코일(RYa)을 접지시킴으로써 일단에 전원이 공급되는 릴레이(RY)의 가동접점(RYb)이 스위칭되어 열선(20)로 전원을 공급하게 되므로 열선(20)은 가열되어 백글라스에 맺힌 물기를 제거하게 되는 것이다.In general, condensation occurs in the glass of the car due to the temperature difference between the cabin air and the outside air, and especially during winter or rainy weather, condensation occurs on the inner surface of the glass, which obscures visibility. In particular, the back glass has a built-in heating wire that is electrically heated to remove such condensation. Referring to FIG. 1, which is illustrated as a circuit for controlling the operation of the heating wire, the front end of the heating wire switch 10 for interrupting power is provided. And one end of the coil RYa and the movable contact RYb of the relay RY are connected in common, and the rear end of the hot wire switch 10 switches and controls by grounding various electric systems such as a central door lock and a hot wire of the car. The timer T1 having an operation time of is also connected to the input terminal of the built-in electric control module DECS, and the other end of the coil RYa of the relay RY is connected to one output terminal of the electric control module DECS. The heat wire 20 embedded in the back glass is connected to the other end of the movable contact RYb of the relay RY. The output line of the electric control module DECS is connected in parallel with a heating wire lamp L1 which lights up on the driver's seat instrument panel and indicates the operation of the heating wire 20. In this way, according to the operation of the heating switch 10, the electric control module DECS grounds the coil RYa of the relay RY so that the movable contact RYb of the relay RY supplied with power at one end is switched. Since the power is supplied to the hot wire 20, the hot wire 20 is heated to remove moisture from the back glass.

이와같이 구성된 종래의 자동차 백글라스 열선 제어회로는 결로량이 많거나 적음에 관계없이 열선스위치(10)를 온하면 전기제어모듈(DECS)에 내장된 타이머(T1)의 작동타임동안만 작동하게 되므로 결로량이 많거나 특히 동절기 백글라스에 수분이 응결된 상태에서는 열선(20)의 가열시간이 부족하게 되어 열선스위치(10)를 누른 후 작동이 꺼지면 재차 열선스위치(10)를 반복조작하여 열선(20)을 작동시켜야 한다는 불편함이 있었다.The conventional automotive back glass hot wire control circuit configured as described above operates only during the operation time of the timer T1 built in the electric control module DECS when the hot wire switch 10 is turned on regardless of the high or low amount of dew condensation. In a state in which moisture is condensed on the back glass in particular in winter, the heating time of the heating wire 20 is insufficient, and when the operation is turned off after pressing the heating wire switch 10, the heating wire 20 is repeatedly operated by repeatedly operating the heating wire switch 10. There was an inconvenience to operate.

그리고, 자동차 제조회사에서의 해외수출시 수출되는 지역이 다를 경우 수출지역의 기온 등의 환경조건에 따라 전기제어시스템에 내장된 작동타임을 매번 새로이 설계하여야 한다는 문제점이 있었다.In addition, there is a problem in that when the export area is different from the automobile manufacturer, the operation time embedded in the electric control system must be newly designed every time according to the environmental conditions such as the temperature of the export area.

본 발명은 운전자가 백글라스 열선의 작동시간을 열선스위치를 조작하여 선택할 수 있도록 함으로써, 소량으로 발생한 백글라스의 결로를 제거하기 위해서는 열선을 단시간동안 작동시켜 전력의 낭비를 줄이고, 장마기에 결로량이 많아지거나 동절기에 성에가 응결될 때에는 열선작동시간을 다소 연장시켜 백글라스에 발생한 결로나 성에를 충분히 제거할 수 있도록 하며, 아울러 자동차 제조시 기온 등의 환경조건이 서로 다른 해외국의 수출시에도 전기제어모듈의 작동타임을 새로 설정시키지 않도록 하려는 목적이 있는 것이다.The present invention allows the driver to select the operating time of the back glass heating wire by operating the heating switch, in order to remove the small amount of condensation of the back glass generated by operating the heating wire for a short time to reduce the waste of power, the amount of condensation during the rainy season When the frost condenses during winter or winter, the heating operation time is slightly extended to remove condensation or frost caused by the back glass.In addition, electrical control is performed even when exporting to foreign countries with different environmental conditions such as temperature during automobile manufacturing. The purpose is to avoid setting a new operating time for the module.

도 1 은 종래의 제어회로도1 is a conventional control circuit diagram

도 2 는 본 발명에 의한 제어회로도2 is a control circuit diagram according to the present invention;

도면의 주요부분에 대한 부호의 설명Explanation of symbols for main parts of the drawings

10.열선스위치 DECS.전기제어모듈10.Hot wire switch DECS.Electric control module

RY.릴레이 20.열선RY.Relay 20.Hot wire

L1.램프L1.lamp

본 발명에 따르면, 전원을 단속하는 열선스위치(10)의 전단과 릴레이(RY)의 코일(RYa) 및 가동접점(RYb)의 일단이 공통접속되며, 상기 열선스위치(10)의 후단은 소정시간동안 백글라스의 열선(20)을 접지하도록 스위칭제어하며 전기제어모듈(DECS)의 입력단자에 접속되고, 상기 전기제어모듈(DECS)의 일출력단자에 릴레이(RY)의 코일(RYa)의 타단이 접속되며, 상기 릴레이(RY)의 가동접점(RYb)의 타단에 백글라스에 내장되는 열선(20)이 접속되어 구성된 회로에 있어서, 상기 열선스위치(10)에는 두 개이상의 절환되는 후단접점(10a,10b))이 구비되고, 상기 전기제어모듈(DECS)에는 작동타임이 서로 다르게 설정된 두 개 이상의 타이머(T1,T2)가 내장되며 이 두 타이머(T1,T2)를 트리거하는 두 개 이상의 입력단자가 인출되어 상기 열선스위치(10)의 두 후단접점(10a,10b)으로 접속되어 구성됨을 특징으로 하는 자동차 백글라스 열선 제어회로가 제공된다.According to the present invention, the front end of the hot wire switch 10 for interrupting power and the one end of the coil RYa and the movable contact RYb of the relay RY are commonly connected, and the rear end of the hot wire switch 10 has a predetermined time. The switching control to ground the heating wire 20 of the back glass while being connected to the input terminal of the electrical control module (DECS), the other end of the coil (RYa) of the relay (RY) to one output terminal of the electrical control module (DECS) Is connected, and a circuit in which a heating wire 20 embedded in the back glass is connected to the other end of the movable contact RYb of the relay RY, wherein the heating wire switch 10 has two or more switched rear-end contacts ( 10a, 10b)), and the electric control module DECS has two or more timers T1 and T2 with different operating times set therein and two or more inputs for triggering these two timers T1 and T2. The terminal is drawn out and connected to the two rear end contacts 10a and 10b of the hot wire switch 10. The car back glass heating coil control circuit, characterized by configured is provided.

이하, 도면을 참조하여 본 발명의 바람직한 실시예를 더욱 상세히 설명한다.Hereinafter, with reference to the drawings will be described a preferred embodiment of the present invention in more detail.

도 2 는 본 발명에 의한 제어회로도로서, 전원을 단속하는 열선스위치(10)의 전단과 릴레이(RY)의 코일(RYa) 및 가동접점(RYb)의 일단이 공통접속되며, 상기 열선스위치(10)의 후단은 소정의 작동타임을 갖으며 차의 센츄럴도어록, 열선 등의 여러 전기계통을 접지하도록 스위칭제어하는 전기제어모듈(DECS)의 입력단자에 접속되고, 상기 전기제어모듈(DECS)의 일출력단자에 릴레이(RY)의 코일(RYa)의 타단이 접속되며, 상기 릴레이(RY)의 가동접점(RYb)의 타단에 백글라스에 내장되는 열선(20)이 접속되어 구성된 회로에 있어서, 상기 열선스위치(10)에는 두 개이상의 절환되는 후단접점(10a,10b))이 구비되고, 상기 전기제어모듈(DECS)에는 작동타임이 서로 다르게 설정된 두 개 이상의 타이머(T1,T2)가 내장되며 이 두 타이머(T1,T2)를 트리거하는 두 개 이상의 입력단자가 인출되어 상기 열선스위치(10)의 두 후단접점(10a,10b))으로 접속된다.FIG. 2 is a control circuit diagram according to the present invention, in which a front end of a heating switch 10 for controlling a power supply and one end of a coil RYa and a movable contact RYb of a relay RY are commonly connected, and the heating switch 10 ) Is connected to an input terminal of an electrical control module (DECS) for switching control to ground various electrical systems such as a central door lock and a heating wire of a car, with a predetermined operating time, and the one end of the electrical control module (DECS). In the circuit which the other end of the coil RYa of the relay RY is connected to the output terminal, and the heating wire 20 embedded in the back glass is connected to the other end of the movable contact RYb of the relay RY, The hot wire switch 10 is provided with two or more switched rear-end contacts 10a and 10b), and the electric control module DECS includes two or more timers T1 and T2 having different operating times. More than one input terminal that triggers two timers (T1, T2) The rear end is connected to two contacts (10a, 10b)) of the hot-wire switch 10.

상기 전기제어모듈(DECS)의 출력단자에는 운전석 계기판 상에서 점등되어 열선(20)의 작동을 표시하는 열선램프(L1)가 병렬접속된다. 상기 열선스위치(10)의 두 후단접점(10a,10b))은 스위치노브를 일측으로 조작하면 열선(20)의 단시간 작동을 선택하고, 스위치노브를 타측으로 조작하면 열선(20)의 장시간 작동을 선택하도록 전원이 연결되는 곳이다. 또, 상기 전기제어모듈(DECS)에 내장된 두 타이머(T1,T2) 중의 하나는 짧은 타임용이고 다른 하나는 비교적 긴 타임용으로, 상기 두 타이머(T1,T2)가 열선(20)로 전원전류를 스위칭하는 시간을 제어한다.The output line of the electric control module DECS is connected in parallel with a heating wire lamp L1 which lights up on the driver's seat instrument panel and indicates the operation of the heating wire 20. The two rear end contacts 10a and 10b of the heating wire switch 10 select a short time operation of the heating wire 20 when the switch knob is operated to one side, and operate the heating wire 20 for a long time when the switch knob is operated to the other side. This is where the power is connected to choose. In addition, one of the two timers (T1, T2) built in the electric control module (DECS) is for a short time and the other for a relatively long time, the two timers (T1, T2) is powered by the heating wire 20 Control the time to switch the current.

한편, 본 발명은 상기 전지제어시스템회로에는 작동타임이 세 개의 타이머가 내장되어 세 개의 입력단자가 마련되고, 열선스위치(10)에 세 개의 후단접점이 구비되도록 구성할 수 있음은 물론이다.On the other hand, the present invention can be configured such that the battery control system circuit is provided with three timers with a built-in operating time of three timers, and three rear-end contacts are provided in the hot wire switch 10.

이와같이 구성된 본 발명의 작용효과를 설명하면 다음과 같다.Referring to the effects of the present invention configured as described above are as follows.

먼저, 백글라스에 결로현상이 발생하여 룸미러에 의한 후방시야가 불량하게 될 때, 결로가 발생량이 적다면, 열선스위치(10)를 조작하여 단시간 선택용의 후단접점(10a)으로 전원이 공급되도록 하면, 전기제어모듈(DECS)에 내장된 짧은 작동타임의 타이머(T1)가 트리거되어 소정시간동안 릴레이(RY)를 구동하고, 이 릴레이(RY)로부터 열선(20)로 공급되는 전원전류에 의해서 열선(20)은 가열되어 백글라스의 결로를 증발시키게 된다. 따라서, 백글라스에 발생한 소량의 결로를 제거할 수 있게 되며 불필요한 시간동안 열선(20)이 가열되어 낭비되는 전력의 손실을 경감하게 된다.First, when condensation occurs on the back glass and the rear view by the room mirror becomes poor, if the amount of condensation is small, the power is supplied to the rear end contact 10a for short time selection by operating the heating switch 10. If so, the timer T1 having a short operation time built in the electric control module DECS is triggered to drive the relay RY for a predetermined time, and to the power current supplied from the relay RY to the heating wire 20. The heating wire 20 is heated to evaporate the condensation of the white glass. Therefore, it is possible to remove a small amount of condensation generated in the back glass and to reduce the loss of power wasted by heating the heating wire 20 for an unnecessary time.

또한, 우천시에 계속적으로 발생하는 다량의 결로나 동절기에 성애가 응결된 상태라면, 열선스위치(10)를 조작하여 장시간 선택용 후단접점(10b)에 접속하면, 전기제어모듈(DECS)에 내장된 타이머(T2)가 트리거되어 전술한 때보다 긴 소정시간동안 릴레이(RY)를 구동하고, 상기 릴레이(RY)로부터 백글라스에 내장되는 열선(20)로 공급되는 전원전류에 의해 충분한 시간동안 열선(20)은 가열되어 백글라스에 발생한 다량의 결로 내지는 성에를 제거하게 된다. 따라서, 열선스위치(10)를 한 번만 조작하여도 우천시에 발생한 다량의 결로나 동절기에 발생한 성에를 충분히 제거할 수 있게 된다.In addition, if a lot of condensation continuously occurs during the rainy weather or when condensation is condensed during the winter season, when the hot wire switch 10 is operated to connect to the rear contact 10b for long time selection, it is built in the electric control module DECS. The timer T2 is triggered to drive the relay RY for a predetermined time longer than that described above, and the heating wire (for a sufficient time by the power supply current supplied from the relay RY to the heating wire 20 embedded in the back glass) 20) is heated to remove a large amount of condensation or frost generated in the back glass. Therefore, even if the hot wire switch 10 is operated only once, a large amount of condensation generated during rainy weather or frost generated in winter can be sufficiently removed.

이상에서 설명한 바와같이 본 발명은 자동차 백글라스 열선의 작동시간을 운전자가 직접 열선스위치를 조작하여 선택할 수 있도록 함으로써, 평상시와 다르게 백글라스의 결로량이 많아지는 장마기나 성에가 발생하는 동절기에는 열선의 작동시간을 평소보다 다소 연장시켜 사용할 수 있도록 하며, 아울러 수출용 자동차 제조시에 수출국의 환경조건에 따라 전기제어모듈의 작동타임을 새로이 세팅할 필요가 없으므로 효율성과 작업성을 향상시키게 되는 효과가 있는 것이다.As described above, the present invention enables the driver to directly select the operating time of the automobile back glass heating wire by operating the heating wire switch, and thus, during the winter season when rainy season or frost occurs that the amount of condensation of the back glass increases more than usual. It can be used to extend the time slightly than usual, and in addition, it is effective to improve efficiency and workability since there is no need to newly set the operating time of the electric control module according to the environmental conditions of the exporting country when manufacturing the export car.

Claims (1)

전원을 단속하는 열선스위치(10)의 전단과 릴레이(RY)의 코일(RYa) 및 가동접점(RYb)의 일단이 공통접속되며, 상기 열선스위치(10)의 후단은 소정시간동안 백글라스의 열선(20)을 접지하도록 스위칭제어하며 전기제어모듈(DECS)의 입력단자에 접속되고, 상기 전기제어모듈(DECS)의 일출력단자에 릴레이(RY)의 코일(RYa)의 타단이 접속되며, 상기 릴레이(RY)의 가동접점(RYb)의 타단에 백글라스에 내장되는 열선(20)이 접속되어 구성된 회로에 있어서, 상기 열선스위치(10)에는 두 개이상의 절환되는 후단접점(10a,10b))이 구비되고, 상기 전기제어모듈(DECS)에는 작동타임이 서로 다르게 설정된 두 개 이상의 타이머(T1,T2)가 내장되며 이 두 타이머(T1,T2)를 트리거하는 두 개 이상의 입력단자가 인출되어 상기 열선스위치(10)의 두 후단접점(10a,10b)으로 접속되어 구성됨을 특징으로 하는 자동차 백글라스 열선 제어회로.The front end of the heating wire switch 10 for controlling the power supply and the one end of the coil RYa and the movable contact RYb of the relay RY are connected in common, and the rear end of the heating wire switch 10 is connected to the heating wire of the back glass for a predetermined time. Switching control to ground (20) and connected to the input terminal of the electrical control module (DECS), the other end of the coil (RYa) of the relay (RY) is connected to one output terminal of the electrical control module (DECS), In a circuit in which a heating wire 20 embedded in the back glass is connected to the other end of the movable contact RYb of the relay RY, two or more switching ends (10a, 10b) of the heating wire switch 10 are switched. The electronic control module DECS includes two or more timers T1 and T2 having different operating times, and two or more input terminals for triggering the two timers T1 and T2 are drawn out. It is characterized in that it is configured by being connected to the two rear end contacts (10a, 10b) of the hot wire switch 10 Automobile back glass heating wire control circuit.
KR1019960042034A 1996-09-24 1996-09-24 Heating wire control circuit of rear glass for a vehicle KR100199448B1 (en)

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Application Number Priority Date Filing Date Title
KR1019960042034A KR100199448B1 (en) 1996-09-24 1996-09-24 Heating wire control circuit of rear glass for a vehicle

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Application Number Priority Date Filing Date Title
KR1019960042034A KR100199448B1 (en) 1996-09-24 1996-09-24 Heating wire control circuit of rear glass for a vehicle

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KR19980022750A true KR19980022750A (en) 1998-07-06
KR100199448B1 KR100199448B1 (en) 1999-06-15

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