KR200403423Y1 - The Nexon road sign of the LED light and light panel application - Google Patents

The Nexon road sign of the LED light and light panel application Download PDF

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Publication number
KR200403423Y1
KR200403423Y1 KR20050026244U KR20050026244U KR200403423Y1 KR 200403423 Y1 KR200403423 Y1 KR 200403423Y1 KR 20050026244 U KR20050026244 U KR 20050026244U KR 20050026244 U KR20050026244 U KR 20050026244U KR 200403423 Y1 KR200403423 Y1 KR 200403423Y1
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South Korea
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light
guide plate
light guide
power
road
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KR20050026244U
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Korean (ko)
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박영구
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(주)넥손
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
    • E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
    • E01F9/604—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings
    • E01F9/608—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings for guiding, warning or controlling traffic, e.g. delineator posts or milestones
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
    • F21S9/02—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
    • F21S9/03—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator rechargeable by exposure to light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
    • F21V23/0464—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor sensing the level of ambient illumination, e.g. dawn or dusk sensors
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/16—Signs formed of or incorporating reflecting elements or surfaces, e.g. warning signs having triangular or other geometrical shape
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00—Supporting structures for PV modules
    • H02S20/20—Supporting structures directly fixed to an immovable object
    • 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
    • F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
    • F21W2111/02—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00 for roads, paths or the like
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
    • G09F2013/222—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent with LEDs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Signs Or Road Markings (AREA)

Abstract

본 고안은 저전력 발광다이오드(엘이디)와 도광판을 사용하여 전력소비를 대폭 줄이면서 도로표지 규정집에서 규정한 각종 도로표지 및 도로교통법에서 규정한 안전표지의 내용을 주,야간 명확하게 전달하여 운전자나 도로 이용자가 도로표지 및 안전표지를 쉽고 빠르게 인식, 안전운행 및 사고 발생을 원천적으로 차단하기 위한 것이다.          The present invention uses low-power LEDs and LGPs to drastically reduce power consumption, while clearly conveying the contents of various road signs prescribed by the Road Sign Regulations and the safety signs prescribed by the Road Traffic Law, day and night. It is for users to recognize road signs and safety signs easily and quickly, and to block the occurrence of accidents and driving safety.

본 고안은 저전력의 고휘도 발광다이오드를 도광판의 상하측면양쪽에 장착하여 도광판의 측면에서 LED(발광다이오드)의 빛이 도광판의 면으로 발광하게 하며 도광판면에 스모그시트 / 조명시트를 붙혀서 도광판면으로 나온 빛을 고르게 확산시키는 것과 표시하고자 하는 문자나 기호를 레이져컷팅하는것과 레이져컷팅된 알미늄형틀앞에 투명폴리카보네이트를 붙이는것과 전원을 태양전기(솔라모듈)와 일반전기를 선택 사용할 수 있는것과 도로표지를 단면과 양면에 적용하도록 하는것을 특징으로 한다. 본 고안은 야간에 원거리에서도 시인성과 식별도가 뛰어나 설치목적에 부합할 뿐아니라 경제성이 뛰어나고 전원 사용이 어려운 도로나 해안가에 설치할 수 있으며 방수성과 내구성이 뛰어나므로 도로표지의 역할을 효과적으로 수행하게 하는 장점이 있다.      The present invention is to install a low-power high-brightness LED on both sides of the light guide plate so that the light of the LED (Light Emitting Diode) from the side of the light guide plate emits light to the surface of the light guide plate and attaches a smog sheet / illumination sheet to the light guide plate surface. To spread light evenly, to laser cut letters and symbols to be displayed, to attach transparent polycarbonate in front of the laser cut aluminum mold, and to use solar power (solar module) and general electricity for power supply And to be applied to both sides. This design not only meets the purpose of installation because of its visibility and identification even at long distances at night, and it is economical and can be installed on roads or coasts where it is difficult to use power. There is this.

Description

발광다이오드와 도광판을 이용한 넥손 도로표지판{The Nexon road sign of the LED light and light panel application}Nexon road sign of the LED light and light panel application

본 고안은 저전력 고휘도 발광다이오드와 도광판을 사용하여 발광다이오드의 소요량을 줄이면서 빛의 밝기를 최대화하며 야간에 자체발광하는 도로표지를 제조, 도로이용자가 명확하고 빠르게 도로표지내용을 시인 식별하기 위한 것이다.The present invention uses low-power, high-brightness light emitting diodes and LGPs to reduce the requirements of the light emitting diodes while maximizing the brightness of light and to produce road signs that emit light at night. .

일반적으로 도로의 각종 표지판은 패널의 겉표면에 반사시트를 부착하거나, 외부조명을 이용하여 표지판을 사용하였다.      In general, various signs on the road have a reflective sheet attached to the outer surface of the panel, or signs using external lighting.

특히 야간에 자동차 불빛이나 가로등이 없으면 표지물 유무 자체를 확인 할 수 없고 먼지등이 시트표면에 묻어있으면 식별하기 어려우며 겨울철에 눈이 얼어붙어 반사가 되지 않아 알아볼 수 없고 계절에 따라 표지판에 결로현상으로 인해 시인식별이 안되어 설치목적에 부합하기 어렵다.      In particular, if there is no car lights or street lights at night, it is impossible to check the presence or absence of signs, and it is difficult to identify if there are dusts on the surface of the sheet. It is difficult to meet the purpose of installation because it is not recognized.

또한 전구가 삽입된 표지판은 빛이 산란하여 원거리에서 표지물을 식별하기 어렵고 전구의 수명이 짧아서 전구를 자주 교체해 주어야 하며 전기 이용이 어려운 곳에서는 설치가 어려워 도로표지판의 목적을 달성하기가 어려운 점이 있다.      In addition, signs with light bulbs are scattered with light, making it difficult to discern signs from a distance, and the light bulbs need to be replaced frequently because of their short lifespan and difficult to install in places where electricity is difficult.

본 고안은 이와 같은 종래의 결점을 해결하기 위한 것으로 본 고안은 초저전력을 소모하는 고휘도 발광다이오드를 사용, 도광판상하측면에 장착, 빛이 도광판면으로 발광하게 하여 도로표지판의 내용을 명확하고 빠르게 식별할 수 있도록하는데 목적이 있다.The present invention solves such a conventional drawback, and the present invention uses a high brightness LED which consumes very low power, and is mounted on the upper and lower side of the light guide plate, so that light can be emitted to the light guide plate surface, so that the contents of the road sign can be clearly and quickly identified. The purpose is to make it possible.

이와 같은 목적을 달성하기 위한 본 고안은 만들고자 하는 형틀의 내부에 발광다이오드의 빛을 면으로 전달하기위한 도광판(V-CUTTING인쇄방식)과 도광판의 크기에 맞게 20~30mm간격으로 발광다이오드를 직.병렬한 인쇄회로기판(LED모듈)과 발광다이오드를 통해 나온 빛이 도광판면에 고르게 확산시키기 위하여 스모그시트와 주간에 표현되는 문자색의 조명시트와 도로표지판의 문자나 기호의 내용을 레이져컷팅한 알미늄형틀과 그앞에 붙이는 투명폴리카보네이트와 도로표지판배경면에 붙이는 반사시트와 발광다이오드에 리드선을 통하여 전원을 공급해주는 전원부와 태양광의 양을 감지하여 발광다이오드를 자동으로 점등시키도록 제어해주는 감응센서와, 태양전기(솔라모듈), 축전지를 포함하여 구성함을 특징으로 한다.The present invention for achieving the above object is a light guide plate (V-CUTTING printing method) for transmitting the light of the light emitting diode to the inside of the mold to be made and the light emitting diode at 20 to 30mm intervals to match the size of the light guide plate. Aluminum frame that laser cuts the contents of letters and symbols on smog sheets and daytime colored light sheets and road signs to spread light emitted through parallel printed circuit boards (LED modules) and light emitting diodes evenly on the light guide plate. And a transparent polycarbonate attached to the front, a reflective sheet attached to the background of a road sign, a power supply for supplying power to the light emitting diode through a lead wire, and an inductive sensor for controlling the light to be automatically turned on by sensing the amount of sunlight. Electric (solar module), characterized in that it comprises a storage battery.

이하 본고안의 실시의 예를 첨부된 도면을 참고로 하여 상세히 설명하면 다음과 같다.      Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 고안에 따른 양면도로표지판의 실시예로서 양면을 분리한 사시도이고, 도 2는 도1의 형틀을 구비한 양면도로표지판의 사시도이며, 도 3은 본 고안에 따른 단면도로표지판의 실시예로서 내부를 절단하여 도시한 사시도이고, 도 4는 도3의 형틀을 구비한 단면도로표지판의 사시도이다.      1 is a perspective view of the two-sided road sign according to the present invention as an embodiment of the two-sided road sign plate, Figure 2 is a perspective view of a double-sided road sign provided with the form of Figure 1, Figure 3 is an embodiment of the cross-sectional road sign according to the present invention As an example, a perspective view of the inside cut out is shown, and FIG. 4 is a perspective view of a cover plate in cross section provided with the mold of FIG. 3.

도1은 양면표지판을 분리한 내부 사시도로 문자면이 레이져컷팅된 알미늄형틀(4.8)내에 LED모듈(2.3)을 사용하여 도광판(1) 상하면에 부착하면 LED모듈(2.3)의 빛이 도광판(1)을 통과하여 문자면이 레이져컷팅된 알미늄형틀(4.8)방향으로 빛이 발광한다.      1 is an internal perspective view of a double-sided cover plate, which is attached to the upper and lower surfaces of the light guide plate 1 using the LED module 2.3 in the aluminum frame 4.8 having a laser cut surface. The light is emitted in the direction of the aluminum frame (4.8) where the letter surface is laser cut after passing through).

앞판알미늄형틀(8)의 알미늄사각기둥(13)에 도광판(1)을 올려놓은후 뒷판알미늄형틀(4)을 끼운다.      Put the light guide plate (1) on the aluminum square pillar (13) of the front aluminum frame (8), and then insert the aluminum frame (4).

투명폴리카보네이트(6.10)에 조명시트(5.9)를 도1과 같이 바르면 도광판(1)을 통과한 LED모듈(2.3)의 빛이 조명시트(5.9)를 통과하면서 빛이 양면으로 확산된다.      When the illumination sheet 5.9 is applied to the transparent polycarbonate 6. 10 as shown in FIG. 1, the light of the LED module 2.3 passing through the light guide plate 1 passes through the illumination sheet 5.9, and the light diffuses to both sides.

알미늄형틀(4.8)의 레이져컷팅된 문자면과 동일하게 반사시트(7.11)를 칼로 오려낸후 도1과 같이 바른다.      Cut the reflective sheet (7.11) with a knife in the same manner as the laser cut letter surface of the aluminum mold (4.8) and apply as shown in FIG.

도3은 단면표지판을 내부절단한 사시도로 문자면이 레이져컷팅된 알미늄형틀(24)내에 LED모듈(23)을 사용하여 도광판(18) 상하면에 부착하면 LED모듈(23)의 빛이 도광판(18)을 통과하여 문자면이 레이져컷팅된 알미늄형틀(24)방향으로 빛이 발광한다.      FIG. 3 is a perspective view of a cross-sectional cut-out of the cross section of the inner surface of the light guide plate 18 when the letter face is attached to the upper and lower surfaces of the light guide plate 18 using the LED module 23 in the aluminum frame 24 having the laser cut surface. The light is emitted in the direction of the aluminum mold 24 having the letter surface laser cut through the through.

도광판(18)에 도3과 같이 스모그시트/조명시트(22)를 바르면 도광판(18)을 통과한 LED모듈(23)의 빛이 스모그시트/조명시트(22)를 통과하면서 빛이 확산된다.      When the smog sheet / light sheet 22 is applied to the light guide plate 18 as shown in FIG. 3, the light of the LED module 23 passing through the light guide plate 18 passes through the smog sheet / light sheet 22 to diffuse light.

도광판(18)을 앞판알미늄형틀(24)에 붙인후 뒤판알미늄형틀(21)을 고정용볼트(17)로 조립한다.      After attaching the light guide plate 18 to the front plate aluminum mold 24, the rear plate aluminum mold 21 is assembled with fixing bolts 17.

알미늄형틀(24)의 레이져컷팅 되지 않은 바탕면에 반사시트(20)를 바른다.      The reflective sheet 20 is applied to the uncut laser cut surface of the aluminum mold 24.

LED모듈에 전원을 공급하는 전원부(19)와 전원을 사용할 수 없는 곳에는 태양광을 이용해 전기를 축전지에 축전시키는 솔라모듈(14)를 이용하며 감응센서(15)는 조도에 따라 LED모듈(23)의 전원을 콘트롤한다.      The power supply unit 19 for supplying power to the LED module and the solar module 14 for storing electricity in the battery using solar power where the power is not available, the sensitive sensor 15 is the LED module (23) according to the illuminance Control the power of).

도2.4는 본 고안의 내용으로 제작되어진 도로표지판의 실시예로써 도로표지판으로서의 내용 전달을 충실히 수행한다      Figure 2.4 is an embodiment of a road sign made of the contents of the present invention faithfully performs the content transfer as a road sign

본 고안의 효과를 살펴보면, 적은량의 발광다이오드를 가지고 일반전기나 태양전기를 통해 자체점등 할수있고 주간에는 물론 야간에도 원거리에서 도로표지물을 쉽고 정확하게 식별할 수 있으므로 도로표지물의 원래목적에 부합하고 소기의 목적을 완벽하게 수행할 수 있으며, 안전의 극대화로 사고를 줄여 인명피해 및 경제적 손실을 최소화 할 수 있고, 도시 경관 측면에서도 우수하다.Looking at the effects of the present invention, it can be self-illuminated with a small amount of light emitting diodes through general electricity or solar electricity, and can easily and accurately identify road signs at long distances during the day and at night, thus meeting the original purpose of the road signs. It can fulfill its purpose perfectly, minimize accidents by minimizing accidents by maximizing safety, and it is excellent in terms of urban landscape.

도 1은 본 고안에 따른 양면도로표지판의 실시예로서 양면을 분리한 사시도1 is a perspective view of the two sides separated by the embodiment of the road sign cover according to the present invention

도 2는 도1의 형틀을 구비한 양면도로표지판의 사시도      2 is a perspective view of a double-sided road sign provided with the form of FIG.

도 3은 본 고안에 따른 단면도로표지판의 실시예로서 내부를 절단하여 도시한 사시도      Figure 3 is a perspective view showing the inside cut as an embodiment of the cover plate in accordance with the present invention

도 4는 도3의 형틀을 구비한 단면도로표지판의 사시도      4 is a perspective view of a cover plate with a cross section with the form of FIG.

Claims (3)

내부조명방식으로 전달하고자 하는 문자 또는 기호가 야간에 점등되도록 하는 도로교통표지에 관한것으로 문자,기호면이 레이져컷팅된 알미늄형틀내에 LED모듈을 사용하여 도광판 상하면에 부착하면 LED모듈의 빛이 도광판을 통과하여 문자면이 레이져컷팅된 알미늄형틀 방향으로 빛이 점등되는 발광부;Regarding the road traffic sign that the letter or symbol to be transmitted by internal lighting is turned on at night, when the letter or symbol surface is attached to the upper and lower parts of the light guide plate by using the LED module in the laser cut aluminum frame, the light of the LED module A light emitting unit for light passing through the aluminum frame in which the letter surface is laser cut; 앞판알미늄형틀안쪽면의 알미늄사각기둥면에 LED모듈이 부착된 도광판을 올려놓은후 뒷판알미늄형틀을 끼우는 알미늄형틀부;      An aluminum frame part for mounting a light guide plate on which an LED module is attached to the aluminum square pillar on the inner side of the front aluminum frame; 투명폴리카보네이트에 조명시트를 바르면 도광판을 통과한 LED모듈의 빛이 조명시트를 통과하면서 빛이 양면으로 확산되며 알미늄형틀의 레이져컷팅된 문자,기호면과 동일하게 반사시트를 칼로 오려낸후 바르는 투명폴리카보네이트부로 구성된 양면 도로교통표지물.      When the lighting sheet is applied to the transparent polycarbonate, the light from the LED module passing through the light guide plate passes through the lighting sheet, and the light is diffused to both sides.The transparent poly is cut out with a knife in the same way as the laser cut letters and symbols on the aluminum frame. Double sided road traffic sign composed of carbonate. 제1항에 있어서, 상기도로표지물의 전시면이 단면으로 구성된 것을 특징으로 하는 도로교통표지물.The road traffic sign according to claim 1, wherein the display surface of the road sign has a cross section. 제1항에 있어서, 상기 도로교통표지물의 저전력 발광다이오드를 태양전기를 통해 자체발광하는 것을 특징으로하는 도로교통표지물.The road traffic sign of claim 1, wherein the low power light emitting diode of the road traffic sign emits light through solar electricity.
KR20050026244U 2005-09-12 2005-09-12 The Nexon road sign of the LED light and light panel application KR200403423Y1 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009119928A1 (en) * 2008-03-25 2009-10-01 Nexon Co., Ltd. Traffic sign
KR200449623Y1 (en) * 2007-11-22 2010-07-23 주식회사 세기텍 portable traffic lane indicator
KR101047904B1 (en) 2011-04-08 2011-07-08 이규삼 Traffic attention sign
KR101184445B1 (en) 2010-01-20 2012-09-20 (주) 신호 Road guidance signboard
KR101327285B1 (en) * 2011-04-12 2013-11-11 전명희 Road signpost

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200449623Y1 (en) * 2007-11-22 2010-07-23 주식회사 세기텍 portable traffic lane indicator
WO2009119928A1 (en) * 2008-03-25 2009-10-01 Nexon Co., Ltd. Traffic sign
KR101184445B1 (en) 2010-01-20 2012-09-20 (주) 신호 Road guidance signboard
KR101047904B1 (en) 2011-04-08 2011-07-08 이규삼 Traffic attention sign
KR101327285B1 (en) * 2011-04-12 2013-11-11 전명희 Road signpost

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