KR0126095Y1 - Turn signal lamp control device - Google Patents
Turn signal lamp control deviceInfo
- Publication number
- KR0126095Y1 KR0126095Y1 KR2019960007243U KR19960007243U KR0126095Y1 KR 0126095 Y1 KR0126095 Y1 KR 0126095Y1 KR 2019960007243 U KR2019960007243 U KR 2019960007243U KR 19960007243 U KR19960007243 U KR 19960007243U KR 0126095 Y1 KR0126095 Y1 KR 0126095Y1
- Authority
- KR
- South Korea
- Prior art keywords
- turn signal
- signal lamp
- lane
- steering
- invaded
- Prior art date
Links
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
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/34—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating change of drive direction
- B60Q1/346—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating change of drive direction with automatic actuation
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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
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/0017—Devices integrating an element dedicated to another function
- B60Q1/0023—Devices integrating an element dedicated to another function the element being a sensor, e.g. distance sensor, camera
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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
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/34—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating change of drive direction
- B60Q1/38—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating change of drive direction using immovably-mounted light sources, e.g. fixed flashing lamps
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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
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/50—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking
- B60Q1/503—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking using luminous text or symbol displays in or on the vehicle, e.g. static text
- B60Q1/5035—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking using luminous text or symbol displays in or on the vehicle, e.g. static text electronic displays
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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
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/50—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking
- B60Q1/525—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking automatically indicating risk of collision between vehicles in traffic or with pedestrians, e.g. after risk assessment using the vehicle sensor data
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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
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/50—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking
- B60Q1/543—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking for indicating other states or conditions of the vehicle
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
본 고안은 조향핸들의 조향에 따라 CCD카메라를 통해 차선의 침범여부를 감지하여 차선침범시 해당방향의 턴시그날램프를 점등시키는 한편 중앙차선 침범시 비상등을 점멸시키도록 하는 자동차의 턴시그날램프 작동제어장치에 관한 것이다.The present invention detects whether a lane is invaded by a CCD camera according to the steering wheel's steering and turns on the turn signal lamp in the corresponding direction when the lane is invaded, and controls the operation of the turn signal lamp of the car to flash the emergency light when the lane is invaded. Relates to a device.
종래에는 운전자가 차선변경을 할 경우 운전자가 직접 턴시그날스위치를 작동시켜야 하는 불편함이 있었고, 앞차 운전자가 이와 같은 조작을 하지 않았을 때에는 후방의 운전자가 앞차의 상태를 정확히 파악할 수 없는 문제점이 있었다.In the related art, when the driver changes lanes, the driver has to manually operate the turn signal switch. When the driver of the front vehicle does not perform the above operation, the driver of the rear cannot accurately grasp the state of the front vehicle.
본 고안은 차량의 전반적인 전자제어동작을 수행하는 전자제어장치(10)의 입력단에 조향핸들의 조향각을 판단하는 조향센서(20)와 차선의 침범여부를 감지하는 CCD카메라(30)가 연결되는 한편 그 출력단에는 턴시그날램프를 작동시키는 턴시그날램프 구동부(40)와 턴시그날램프의 작동상태를 문자메시지로 출력하는 메시지표시부(50)가 연결되어 조향핸들의 조향각과 차선의 침범여부에 따라 턴시그날램프를 자동으로 작동시킬 수 있도록 된 고안임.The present invention is connected to the steering sensor 20 for determining the steering angle of the steering wheel and the CCD camera 30 for detecting the lane invasion at the input terminal of the electronic control device 10 for performing the overall electronic control operation of the vehicle The output terminal is connected to the turn signal lamp driving unit 40 for operating the turn signal lamp and the message display unit 50 for outputting the operation state of the turn signal lamp as a text message, according to the steering angle of the steering wheel and whether the lane is invaded by the lane. Designed to operate the lamp automatically.
Description
본 고안은 자동차의 턴시그날램프 작동제어장치에 관한 것으로, 더욱 상세하게는 조향핸들의 조향에 따라 CCD카메라를 통해 차선의 침범여부를 감지하여 차선침범시 해당방향의 턴시그날램프를 점등시키는 한편 중앙차선 침범시 비상 등을 점멸시키도록 하는 자동차의 턴시그날램프 작동제어장치에 관한 것이다.The present invention relates to an operation control device for a turn signal lamp of a vehicle, and more particularly, to detect whether a lane is invaded by a CCD camera according to the steering wheel steering, and to turn on the turn signal lamp in the corresponding direction when the lane is invaded. The present invention relates to a turn signal lamp operation control device for a vehicle to flash an emergency light in a lane invasion.
일반적으로 자동차에는 차체의 전후좌우 모서리에 턴시그날램프가 설치되어 운전자의 턴시그날램프 스위치조작에 따라 좌측 턴시그날램프 또는 우측 턴시그날램프가 점등되도록 이루어져 있고, 운전자가 상기 턴시그날램프 스위치와는 별도로 설치된 비상등 스위치를 조작하게 되면 좌,우측 턴시그날램프가 동시에 점멸되어 위급상황이 발생되었음을 전후방에 주행하는 차에 알려줄 수 있도록 되어 있다.In general, a turn signal lamp is installed at the front, rear, left, and right corners of a vehicle, and the left turn signal lamp or the right turn signal lamp is turned on according to the driver's turn signal lamp operation, and the driver separately from the turn signal lamp switch. When the installed emergency light switch is operated, the left and right turn signal lamps blink at the same time, so that the car running in front and rear can be informed that an emergency situation has occurred.
따라서 종래의 차량에서는 운전자가 차선변경을 하고자 할 경우 운전자가 직접 턴시그날스위치를 작동시키도록 되어 있는데 차선변경시 조향핸들의 조작과 함께 턴시그날스위치를 조작하려면 불편할뿐더러 운전에 익숙치 않은 사람은 턴시그날램프의 작동없이 조향핸들의 조작을 통해 차선변경을 하는 경우가 많아 전후방 차량 특히 후방에서 주행하는 차량의 운전자가 그에 대비할 수 있는 여유를 주지 못하는 경우가 있어 안전사고의 위험이 있는 문제점이 있었고, 특히 좁은 도로상에서는 운전자가 차선을 이탈하였는지 여부도 정확히 알 수 없었으며, 뒷차량의 운전자도 앞차량이 어떠한 진로로 주행할 것인지 등에 관한 정확한 상태를 파악할 수 없는 문제점이 있었다.Therefore, in the conventional vehicle, when the driver wants to change lanes, the driver directly operates the turn signal switch. When changing lanes, it is inconvenient to operate the turn signal switch together with the steering wheel operation. Many lanes are changed through steering wheel operation without a lamp, so drivers of front and rear vehicles, especially those driving behind them, cannot afford to prepare for them. On a narrow road, it was not possible to know exactly whether the driver had left the lane, and there was a problem that the driver of the rear vehicle could not grasp the exact state regarding which course the front vehicle was traveling.
본 고안은 상기한 제반 문제점을 개선하기 위하여 안출한 것으로, 조향센서를 통해 조향핸들의 조향각을 판단하고 CCD카메라를 통해 차선의 침범여부를 판단하여 조향핸들의 회전방향과 함께 그 방향의 차선을 침범한 것으로 판단되면 자동으로 상기 조향방향의 턴시그날램프를 점등시키는 한편 침범한 차선이 중앙차선인 경우에는 좌우측 턴시그날램프를 점멸시키는 비상등을 작동시키는 동작과 함께 해당 기능에 대한 메시지를 메시지표시부를 통해 문자신호로 출력하도록 된 자동차의 조향에 따른 턴시그날램프 작동제어장치를 제공하고자 함에 고안의 목적이 있다.The present invention was devised to improve the above-mentioned problems. The steering angle of the steering wheel is determined by the steering sensor, and whether the lane is invaded by the CCD camera, and the lane of the steering wheel is invaded with the rotation direction of the steering wheel. If it is determined that the turn signal lamp in the steering direction is automatically turned on, and if the invading lane is the center lane, an emergency light for flashing the left and right turn signal lamps is activated, and a message for the corresponding function is displayed through the message display unit. It is an object of the present invention to provide a turn signal lamp operation control device according to the steering of the vehicle to be output as a text signal.
상기한 목적을 실현하기 위한 본 고안은 차량의 전반적인 전자제어동작을 수행하는 전자제어장치(ECU)의 입력단에 조향핸들의 조향각을 판단하는 조향센서와 차선의 침범여부를 감지하는 CCD카메라가 연결되는 한편 그 출력단에는 턴시그날램프를 작동시키는 턴시그날램프 구동부와 턴시그날램프의 작동상태를 문자메시지로 출력하는 메시지표시부가 연결되어, 조향센서로부터 조향신호가 입력되었을 때 그리고 CCD카메라로부터 차선침범신호가 입력되었을 때 전자제어장치가 해당 조향방향의 턴시그날램프를 점등시킴과 아울러 메시지표시부를 통해 턴시그날램프의 작동상황을 문자정보로써 표시하도록 이루어진 것이다.The present invention for realizing the above object is a steering sensor for determining the steering angle of the steering wheel and the CCD camera for detecting whether the lane is invaded at the input terminal of the electronic control unit (ECU) to perform the overall electronic control operation of the vehicle On the other hand, the output stage is connected with a turn signal lamp driver for operating the turn signal lamp and a message display unit for outputting the operation state of the turn signal lamp as a text message, when a steering signal is input from the steering sensor and a lane violation signal from the CCD camera. When input, the electronic controller turns on the turn signal lamp in the steering direction and displays the operation status of the turn signal lamp as text information through the message display unit.
제1도는 본 고안에 따른 턴시그날램프 작동제어장치의 구성도,1 is a block diagram of a turn signal lamp operation control apparatus according to the present invention,
제2도는 본 고안에 따른 턴시그날램프 작동제어장치의 동작을 설명하기 위한 도면이다.2 is a view for explaining the operation of the turn signal lamp operation control apparatus according to the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
10 : 전자제어장치 20 : 조향센서10: electronic control device 20: steering sensor
30 : CCD카메라 40 : 턴시그날램프 구동부30: CCD camera 40: turn signal lamp drive unit
50 : 메시지표시부50: message display unit
이하 본 고안의 구성 및 작용효과에 대하여 예시도면에 의거하여 상세히 설명하면 다음과 같다.Hereinafter will be described in detail with reference to the drawings for the configuration and effect of the present invention.
본 고안은 차량의 전반적인 전자제어동작을 수행하는 전자제어장치(10)의 입력단에 조향핸들의 조향각을 판단하는 조향센서(20)와 차선의 침범여부를 감지하는 CCD카메라(30)가 연결되는 한편 그 출력단에는 턴시그날램프를 작동시키는 턴시그날램프 구동부(40)와 턴시그날램프의 작동상태를 문자메시지로 출력하는 메시지표시부(50)가 연결되어 이루어진 구조로 되어 있다.The present invention is connected to the steering sensor 20 for determining the steering angle of the steering wheel and the CCD camera 30 for detecting the lane invasion at the input terminal of the electronic control device 10 for performing the overall electronic control operation of the vehicle The output terminal has a structure in which the turn signal lamp driver 40 for operating the turn signal lamp and the message display part 50 for outputting the operation state of the turn signal lamp as a text message are connected.
제1도는 본 고안에 자동차의 조향에 따른 턴시그날램프 작동제어장치의 구성도를 도시한 것이다.1 is a block diagram of a turn signal lamp operation control apparatus according to the steering of the present invention.
조향센서(20)는 발광다이오드와 포토 트랜지스터 사이에 설치된 디스크가 스티어링 휠과 같이 회전되어 스티어링 휠의 각도에 따른 신호가 발생되어 전자제어장치(10)로 입력되도록 연결된 것이다.The steering sensor 20 is connected to the disk installed between the light emitting diode and the photo transistor so that the disk is rotated together with the steering wheel to generate a signal according to the angle of the steering wheel and to be input to the electronic controller 10.
CCD카메라(30)는 도로에 그려져 있는 차선을 감지하기 위한 것으로, 주행중 특히 조향센서(20)로부터 차량이 일정 각도 이상 조향되는 것으로 판단될 때 작동되어 차선의 침범여부를 감지하게 되며, 차선의 감지는 CCD카메라(30)로 촬영되는 영상신호를 분석하여 차선의 침범여부를 감지하게 된다. 이에 대해서는 상세하게 설명되어 있지 않지만 일반적으로 피사체를 촬영한 영상신호의 이미지분석을 통해 이루어지는 것이다.The CCD camera 30 is used to detect the lane drawn on the road, and is activated when the vehicle is determined to be steered by a predetermined angle from the steering sensor 20 during driving, thereby detecting whether the lane is invaded, and detecting the lane. The sensor detects whether the lane is invaded by analyzing the image signal photographed by the CCD camera 30. This is not described in detail, but is generally performed through image analysis of an image signal photographing a subject.
턴시그날램프 구동부(40)는 통상 방향지시등이라고도 불리워지며, 차량의 전후,좌우 모서리에 설치되는 램프로서 0.5 내지 1초에 1회 점멸하고, 좌우회전이나 차선변경 등 자동차의 진로를 바꾸는 신호로 사용되는 것이다. 이는 통상 컴비네이션 스위치를 통해 조작하도록 되어 있으나 본 고안에서는 이에 부가하여 전자제어장치(10)의 제어에 의해서도 온오프를 제어할 수 있도록 구성된 것이다.The turn signal driving unit 40 is also commonly referred to as a turn signal, and is a lamp installed at the front, rear, left and right corners of the vehicle and blinks once every 0.5 to 1 second, and is used as a signal for changing the course of the vehicle such as turning left and right or changing lanes. Will be. This is usually to operate through a combination switch, but in the present invention is configured to be able to control the on and off by the control of the electronic control device 10 in addition to this.
그리고 메시지표시부(50)는 문자출력 장치로서 후방에서 주행하는 차량의 운전자가 용이하게 볼 수 있도록 리어 글래스의 일측에 설치되는 것이다.The message display unit 50 is a text output device which is installed at one side of the rear glass so that a driver of the vehicle traveling behind the vehicle can be easily seen.
이와 같이 이루어진 본 고안의 작용에 대해 예시도면 제2도에 도시된 흐름도에 의거 설명하면 다음과 같다.Referring to the operation of the present invention made as described above based on the flow chart shown in Figure 2 as follows.
먼저 전자제어장치(10)는 조향센서(20)를 통해 차량이 일정 각도 이상 좌측방향 또는 우측방향으로 진로를 변경하고 있는지 여부를 판단하고 그 결과 기준값으로 설정되는 일정 각도이상 조향되었다고 판단될 때 CCD카메라(30)를 작동시켜 차선의 침범여부를 감지한다.First, the electronic control apparatus 10 determines whether the vehicle is changing the course to the left or the right direction by a predetermined angle or more through the steering sensor 20, and when it is determined that the steering is performed by a predetermined angle or more, which is set as a reference value. Operate the camera 30 to detect the lane invasion.
이때 좌측 흰색차선을 침범하고 있는 것으로 판단되면 턴시그날램프 구동부(40)를 통해 좌측 턴시그날램프를 점등시키면서 그에 해당하는 문자 예컨대 '좌측차선 침범'등과 같은 메시지를 출력시켜 후방 주행차량에게 그러한 상황을 알려주고, 우측 흰색차선을 침범하고 있는 것으로 판단되면 턴시그날램프 구동부(40)를 통해 우측 턴시그날램프를 점등시키면서 그에 해당하는 문자 예컨대 '우측차선 침범'등과 같는 메시지를 출력시켜 후방 주행차량에게 그러한 상황을 알려주는 한편 황색 중앙차선을 침범하고 있는 것으로 판단되면 비상 등을 점멸시킨다. 위와 같은 턴시그날램프의 작동시 메시지표시부(50)를 통해서는 해당 램프의 작동에 관한 메시지를 문자정보로써 출력한다.In this case, if it is determined that the left white lane is invaded, the left signal is turned on through the turn signal lamp driver 40, and a message such as a 'left lane invasion' is output by outputting a corresponding message such as 'left lane invasion'. If it is determined that the right white lane is invading, the right signal is turned on through the turn signal lamp driver 40 and a message corresponding to the right lane violation is output to the rear driving vehicle. If you believe that you are invading the yellow central lane, flash the emergency light. When the turn signal lamp is operated as described above, the message display unit 50 outputs a message regarding the operation of the corresponding lamp as text information.
상기한 바와 같이 본 고안은 조향센서와 CCD카메라를 통해 차량의 조향상태와 차선의 침범여부를 감지하여 현재 차량이 취하고자 하는 메시지를 턴시그날램프와 메시지표시부를 통해 자동으로 표시함으로써 후방에서 주행하는 차량이 앞차의 상태를 정확히 파악하여 그에 대비한 운전을 할 수 있게 되어 원활한 교통운전을 이룩할 수 있는 효과가 있다.As described above, the present invention detects the steering condition of the vehicle and whether the lane is invaded by the steering sensor and the CCD camera, and automatically displays a message to be taken by the current vehicle through the turn signal lamp and the message display unit to drive from the rear. The vehicle can accurately determine the state of the vehicle ahead and drive in preparation for the smooth traffic driving.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960007243U KR0126095Y1 (en) | 1996-04-04 | 1996-04-04 | Turn signal lamp control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960007243U KR0126095Y1 (en) | 1996-04-04 | 1996-04-04 | Turn signal lamp control device |
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| Publication Number | Publication Date |
|---|---|
| KR970057713U KR970057713U (en) | 1997-11-10 |
| KR0126095Y1 true KR0126095Y1 (en) | 1998-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019960007243U KR0126095Y1 (en) | 1996-04-04 | 1996-04-04 | Turn signal lamp control device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101130499B1 (en) * | 2009-12-29 | 2012-04-12 | 대성전기공업 주식회사 | A Rear Message Display for Automobile and the Method Thereof |
-
1996
- 1996-04-04 KR KR2019960007243U patent/KR0126095Y1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101130499B1 (en) * | 2009-12-29 | 2012-04-12 | 대성전기공업 주식회사 | A Rear Message Display for Automobile and the Method Thereof |
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| Publication number | Publication date |
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| KR970057713U (en) | 1997-11-10 |
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