KR100457165B1 - A solar heat soundproofed wall prevent freezing prevent of road - Google Patents

A solar heat soundproofed wall prevent freezing prevent of road Download PDF

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Publication number
KR100457165B1
KR100457165B1 KR10-2002-0017499A KR20020017499A KR100457165B1 KR 100457165 B1 KR100457165 B1 KR 100457165B1 KR 20020017499 A KR20020017499 A KR 20020017499A KR 100457165 B1 KR100457165 B1 KR 100457165B1
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South Korea
Prior art keywords
road
heating
heat
freezing
soundproof wall
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KR10-2002-0017499A
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Korean (ko)
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KR20030078445A (en
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문태현
조익서
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주식회사 에이브이티
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    • 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
    • E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
    • E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
    • E01F8/0023—Details, e.g. foundations
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C11/00—Details of pavings
    • E01C11/24—Methods or arrangements for preventing slipperiness or protecting against influences of the weather
    • E01C11/26—Permanently installed heating or blowing devices ; Mounting thereof
    • E01C11/265—Embedded electrical heating elements ; Mounting thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
    • F24S20/60—Solar heat collectors integrated in fixed constructions, e.g. in buildings
    • 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
    • Y02E10/40—Solar thermal energy, e.g. solar towers

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
  • Road Paving Structures (AREA)

Abstract

본 발명은 도로의 결빙방지 기능을 갖는 태양열 방음벽에 관한 것으로, 도로용 방음벽에 태양빛을 집열하기 위한 집열판을 구비하고, 그 내측에 이 집열판으로부터 집열된 에너지를 전기에너지로 변환시키는 축전수단을 구비하며, 이 축전수단에 의해 생성된 전기에너지를 통해 도로에 배열된 히팅열선을 가열시켜 도로의 결빙을 방지하도록 한 것이다.The present invention relates to a solar soundproof wall having an anti-freezing function of a road, comprising a heat collecting plate for collecting solar light on a road soundproof wall, and having power storage means for converting energy collected from the heat collecting plate into electrical energy therein. It is to prevent the freezing of the road by heating the heating heating wire arranged on the road through the electrical energy generated by the power storage means.

Description

도로의 결빙 방지 기능을 갖는 태양열 방음벽{A SOLAR HEAT SOUNDPROOFED WALL PREVENT FREEZING PREVENT OF ROAD}Solar sound insulation wall with frost protection of road {A SOLAR HEAT SOUNDPROOFED WALL PREVENT FREEZING PREVENT OF ROAD}

본 발명은 도로의 결빙 방지 기능을 갖는 태양열 방음벽에 관한 것으로, 더욱 상세하게는 도로면에 히팅열선을 배열하고 방음벽에 제공되는 집열판을 이용하여 태양빛을 축열하고 축열된 열에너지를 전기에너지로 변환시키며 변환된 전기에너지로 히팅열선을 가열하도록 하므로써 도로의 결빙을 방지는 물론 주변의 표시판 또는 가로등을 점등시킬 수 있도록 하는 도로의 결빙 방지 기능을 갖는 방음벽에 관한 것이다.The present invention relates to a solar soundproof wall having a function of preventing freezing of roads, and more particularly, by arranging heating heating wires on the road surface and using heat collecting plates provided on the soundproof walls to accumulate sunlight and convert the stored heat energy into electrical energy. The present invention relates to a soundproof wall having a function to prevent freezing of a road and to light a display panel or a street lamp of a road by heating a heating heating wire with converted electric energy.

일반적으로 방음벽은, 도로변의 지면이나 교량의 가장자리에 일정 간격으로 지주(H-Post)를 세우고 그 지주와 지주 사이에 방음판을 끼워 설치하며 내측에는 흡음재를 채움시켜 소음을 차단 및 흡수하게 되는 것으로, 주변에 건물 또는 주택이 있는 경우 소음전달을 방지하게 위해 일정높이를 가지며 반듯이 설치되게 된다.In general, the soundproof wall is to install a strut (H-Post) at a predetermined interval on the ground or bridge edge of the roadside and insert a soundproof plate between the strut and the strut, and to fill the sound-absorbing material inside to block and absorb the noise, If there are buildings or houses around it, it is installed at a certain height to prevent noise transmission.

이렇게 설치된 방음벽은 도로상에서 일정높이를 차지함에 따라, 도로의 측면에 제공되는 갓길 폭이 넓은 경우에는 햇빛의 조사(照射)각이 주행도로에 미치지 못해 주행도로의 일조(日照)량이 어느정도 확보되지만 굴곡 선회도로 또는 지형상 도로폭이 좁은 경우에는 방음벽에 의해 일조량이 크게 부족하여 결빙시 해동시간이 오래 지속되게 된다.As the soundproof wall installed in this way occupies a certain height on the road, when the width of the shoulder road provided on the side of the road is wide, the amount of sunlight on the road is secured because the angle of irradiation of sunlight does not reach the road. In the case of narrow roads or turning roads, the amount of sunshine is greatly shortened by the soundproof walls, and the thawing time lasts for a long time.

이에 따라 도로를 주행하는 차량은 주행시 일조량이 많은 도로와 착각하여 결빙에 따른 미끄러짐으로 잦은 사고를 발생하게 되고 특히 선회시에는 도로가 결빙되는 경우 원심력이 더해져 대형사고를 유발하는 문제점이 있어왔으며, 통계적으로도 터널 인접부위 또는 선회도로에서 결빙에 의해 많은 사고가 발생하게 된다.Accordingly, vehicles driving on the road are often mistaken for roads with a large amount of sunshine, causing frequent accidents due to slippage due to freezing. In particular, when the road freezes during turning, centrifugal force is added, causing large accidents. In addition, many accidents are caused by freezing in the vicinity of the tunnel or the turning road.

이를 해결하고자 도로가 결빙되는 경우 작업자가 일일이 도로상에 화학약품을 살포하여 결빙을 방지하고 있지만, 이는 작업시간의 지연 및 화학약품으로 인해 도로 또는 차량 등이 부식되는 문제점, 더불어 화학약품으로 인한 토양 및 수질오렴을 야기하는 2차적인 문제로 도로여건을 더욱 악화시키는 문제점이 있게 된다.When the road is frozen to solve this problem, the worker sprays the chemical on the road to prevent freezing, but this is a problem that the road or vehicle is corroded by the delay of working time and the chemical, and the soil due to the chemical And a secondary problem causing water pollution there is a problem that worsens the road conditions.

이에 본 발명은 상기한 문제점을 해결하기 위해 창안된 것으로, 본 발명의 목적은 도로에 설치된 방음벽에 태양열을 이용한 태양전지를 구비하여 도로 또는 철로의 결빙을 방지 그리고 주변 표지판 또는 가로등을 점등시킬 수 있도록 하는데 있는 것이다.Therefore, the present invention was devised to solve the above problems, and an object of the present invention is to provide a solar cell using solar heat on the soundproof wall installed on the road to prevent freezing of the road or railroad and to turn on the surrounding signs or street lamps. It is to

즉, 방음벽에 설치되는 집열기능을 통해 태양열의 열에너지를 전기에너지로 변환시키고 변환된 전기에너지를 통해 도로 또는 철로에 배열된 히팅열선을 가열시켜 도로의 결빙을 방지하는 세스템을 제공하고자 하는데 있는 것이다.In other words, it is intended to provide a system that prevents freezing of the road by converting heat energy of solar heat into electric energy through the heat collecting function installed on the soundproof wall and heating the heating heating wire arranged on the road or the railroad through the converted electric energy. .

도 1은 본 발명에 따른 도로의 결빙 방지 기능을 갖는 태양열 방음벽을 도시한 사시도,1 is a perspective view showing a solar sound insulation wall having a function to prevent freezing of the road according to the present invention,

도 2는 도 1의 측 단면 사용상태도.Figure 2 is a side cross-sectional view of the state of use of FIG.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

100: 방음벽 110: 포스트100: soundproof wall 110: post

200: 소음감소부재 210: 결합편200: noise reduction member 210: coupling piece

220: 볼록체 230: 확장부220: convex body 230: extension part

240: 절곡홈 250: 커버240: bending groove 250: cover

300: 집열판 400: 축전수단300: heat collecting plate 400: power storage means

410: 축열조 420: 변환기410: heat storage tank 420: converter

430: 충전부 440: 제어부430: charging unit 440: control unit

500: 히팅열선 600: 센서500: heating heating wire 600: sensor

상기 목적을 달성하기 위하여 본 발명은, 도로용 방음벽에 태양빛을 집열하기 위한 집열판을 구비하고, 그 내측에 이 집열판으로부터 집열된 에너지를 전기에너지로 변환시키는 축전수단을 구비하며, 이 축전수단에 의해 생성된 전기에너지를통해 도로에 배열된 히팅열선을 가열시켜 도로의 결빙을 방지하도록 함을 특징으로 한다.In order to achieve the above object, the present invention is provided with a heat collecting plate for collecting solar light on the soundproof wall for road, and on the inside thereof is provided power storage means for converting the energy collected from the heat collecting plate into electrical energy. It is characterized in that to prevent the freezing of the road by heating the heating heating wire arranged on the road through the electrical energy generated by the.

상기 축전수단이, 상기 집열판에 의해 집열된 에너지를 축열시키는 축열조, 상기 축열조를 통해 축열된 에너지를 전기에너지로 변환시키는 변환기, 상기 변환기를 통한 전기에너지를 충전시키며 필요시 히팅열선을 가열시키는 충전부, 이들로부터 입력된 신호값에 따라 히팅열선의 가열 또는 충전량을 제어하게 되는 제어부로 구성된다.The power storage means, a heat storage tank for accumulating the energy collected by the heat collecting plate, a converter for converting the energy stored in the heat storage tank into electrical energy, a charging unit for charging the electric energy through the converter and, if necessary, heating heating wire, And a control unit which controls the heating or filling amount of the heating heating wire according to the signal value inputted from them.

또한, 상기 방음벽의 일측에 센서를 추가로 구비하여 센서값의 입력시 제어부가 도로의 결빙상태를 판단하여 도로의 결빙시 히팅열선을 가열시키도록 하고 결빙이 아닌 경우 상기 충전기와 연결된 와이어를 통해 주변의 표지판 또는 가로등을 점등시키도록 한다.In addition, the sensor is further provided on one side of the soundproof wall so that the controller determines the freezing state of the road when the sensor value is input, and heats the heating heating wire during the freezing of the road. Turn on signs or streetlights.

또한, 상기 방음벽의 상단에, 반원통형의 구조를 가지도록 볼록한 융기부가 도로 방향으로 돌출 고정되는 소음감소부재를 구비하고 상기 소음감소부재의 상측단으로부터 도로의 외측 방향으로 소정폭 연장된 확장부를 구비하며 여기에 상기 집열판이 설치되도록 한다.In addition, at the upper end of the soundproof wall, a convex ridge having a semi-cylindrical structure is provided with a noise reduction member protruding and fixed in the direction of the road, and an extension portion extending a predetermined width in the outward direction of the road from the upper end of the noise reduction member. And the heat collecting plate is to be installed here.

이하 본 발명에 따른 도로의 결빙 방지 기능을 갖는 방음벽을 첨부된 도면을 참조로 하여 상세히 설명한다.Hereinafter, a soundproof wall having a function of preventing freezing of a road according to the present invention will be described in detail with reference to the accompanying drawings.

도 1 또는 도 2의 도시에 의하여 본 발명은, 도로의 외측에 설치되는 방음벽(100)과, 이 방음벽(100)의 상단에 제공되어 소음 전달을 방지하게 되는 소음감소부재(200)와, 이 소음감소부재(200)로부터 연장 설치되며 태양열을 집열시키는 집열판(300)과, 이 집열판(300)으로부터 집열된 에너지를 전기에너지로 변환시켜 충전하는 축전수단(400)과, 이 축전수단(400)에 의해 가열되어 도로의 결빙을 방지하는 히팅열선(500)을 포함한다.1 or 2, the present invention, the soundproof wall 100 is installed on the outside of the road, and the noise reduction member 200 is provided on the upper end of the soundproof wall 100 to prevent noise transmission, and A heat collecting plate 300 extending from the noise reducing member 200 and collecting solar heat, and power storage means 400 for converting and charging the energy collected from the heat collecting plate 300 into electrical energy, and the power storage means 400. It is heated by the heating wire 500 to prevent freezing of the road.

상기 방음벽(100)은, 공지의 구조와 동일하게 제공되며, 양단이 도로의 가장자리에 위치된 복수개의 포스트(110) 들 사이에 결합된다.The soundproof wall 100 is provided in the same manner as the known structure, and both ends are coupled between the plurality of posts 110 positioned at the edge of the road.

상기 소음감소부재(200)는, 상기 방음벽(100)의 상단에 길이방향을 따라 결합되는 것으로, 하단에는 상기 방음벽(100)에 보올트 결합되기 위한 결합편(210)이 구비되고, 상측단은 절곡되어 일측이 도로방향으로 볼록하게 돌출된 반원 파이프형상의 볼록체(220)가 형성되어 소음감소기능을 하게 된다. 그리고 상기 볼록체(220)의 융기부 바깥면에는 절곡에 의해 절곡홈(240)이 길이방향을 따라 형성된다.The noise reduction member 200 is to be coupled along the longitudinal direction at the upper end of the soundproof wall 100, the lower end is provided with a coupling piece 210 to be coupled to the soundproof wall 100, the upper end is A semicircular pipe-shaped convex body 220 is bent to protrude convexly in one side of the road to form a noise reduction function. The bent groove 240 is formed along the longitudinal direction by bending the outer surface of the ridge of the convex body 220.

상기 집열판(300)은, 일조량을 길게하며 조사각이 최대 범위가 되도록 상기 소음감소부재(200)의 상측에 제공되는 것이며, 상기 소음감소부재(200)의 상측단으로부터 도로의 외측 방향으로 소정폭 연장된 확장부(230)의 상면에 제공되어 태양열을 집열시키게 된다.The heat collecting plate 300 is provided on the upper side of the noise reduction member 200 to increase the amount of sunshine and the irradiation angle to the maximum range, and a predetermined width in the outward direction of the road from the upper end of the noise reduction member 200. The upper surface of the extended portion 230 is provided to collect solar heat.

여기서, 상기 집열판(300)은 방음벽(100)의 전후면에 설치됨이 가능할 것이다.Here, the heat collecting plate 300 may be installed on the front and rear surfaces of the soundproof wall 100.

상기 히팅열선(500)은, 도로 또는 철로 즉, 일조량이 적은 장소에 배열되어 가열시 도로 상면의 결정체를 증발시키게 된다.The heating heating line 500 is arranged on a road or a track, i.e., a place having a small amount of sunshine, to evaporate crystals on the upper surface of the road during heating.

상기 축전수단(400)은, 상기 집열판(300)에 의해 집열된 에너지를 축열시키는 축열조(410)와, 상기 축열조(410)를 통해 축열된 에너지를 전기에너지로 변환시키는 변환기(420)와, 상기 변환기(420)를 통한 전기에너지를 충전시키며 필요시 히팅열선(500)을 가열시키는 충전부(430)와, 이들로부터 입력된 신호값에 따라 히팅열선(500)의 가열 또는 충전량을 제어하게 되는 제어부(440)로 구성된다.The power storage means 400, a heat storage tank 410 for accumulating the energy collected by the heat collecting plate 300, a converter 420 for converting the energy stored in the heat storage tank 410 into electrical energy, and the The charging unit 430 for charging the electric energy through the converter 420 and, if necessary, to heat the heating heating wire 500, and a control unit for controlling the heating or charging amount of the heating heating wire 500 according to the signal value input therefrom ( 440).

상기 축열조(410)는, 상기 소음감소부재(200)의 외측 절곡홈(240)에 위치되며, 일단이 방음벽(100)의 상단에 결합되고 타단이 상기 확장부(230)의 외측단에 결합된 커버(250)에 의해 폐쇄된다.The heat storage tank 410 is located in the outer bending groove 240 of the noise reduction member 200, one end is coupled to the upper end of the soundproof wall 100 and the other end is coupled to the outer end of the expansion unit 230 It is closed by the cover 250.

상기 변환기(420)는, 상기 방음벽(100)의 내측에 제공되어 상기 축열조(410)를 통해 축열된 에너지를 전기에너지로 변환시키게 된다.The converter 420 is provided inside the soundproof wall 100 to convert the energy accumulated through the heat storage tank 410 into electrical energy.

상기 충전부(430)는, 상기 방음벽(100)의 내측에 제공되어 상기 변환기(420)를 통해 변환된 전기에너지를 적정량 충전시키게 된다.The charging unit 430 is provided inside the soundproof wall 100 to charge an appropriate amount of electric energy converted through the converter 420.

상기 제어부(440)는, 상기 축열조(410), 변환기(420), 충전부(430)의 센싱된 신호값에 따라 히팅열선(500)을 가열 또는 충전부(430)의 충전량을 제어하게 된다.The controller 440 heats the heating heating wire 500 or controls the charging amount of the charging unit 430 according to the sensed signal values of the heat storage tank 410, the converter 420, and the charging unit 430.

또한, 상기 방음벽(100)과 도로의 인접부위에는 센서(600)가 위치되어 도로의 결빙상태를 감지하고 감지된 신호값을 상기 제어부(440)에 출력시키게 된다.In addition, the sensor 600 is located in the vicinity of the sound barrier wall 100 and the road to detect the freezing state of the road and output the detected signal value to the controller 440.

이상에서와 같이 구성되는 도로의 결빙 방지 기능을 갖는 방음벽의 작동상태를 설명하면 다음과 같다.Referring to the operation state of the soundproof wall having a function to prevent the freezing of the road configured as described above are as follows.

설치가 완료된 상태에서, 태양열이 집열판(300)을 향하게 되면, 태양빛이 집열되어 축열조(410)에 저장되고, 연속해서 축열조(410)에 저장된 열에너지는 변환기(420)에 의해 전기에너지로 변환되어 충전부(430)에서는 전기에너지를 충전하게 된다.When the installation is completed, when the solar heat is directed to the heat collecting plate 300, the sunlight is collected and stored in the heat storage tank 410, the heat energy stored in the heat storage tank 410 continuously is converted into electrical energy by the converter 420 The charging unit 430 is to charge the electrical energy.

이후 도로의 결빙상태가 판단되면, 제어부(440)가 충전된 전기를 히팅열선(500)으로 출력시켜 히팅열선(500)은 히팅열을 발산하게 되고 이 히팅열에 의해 도로의 결정체는 증발 또는 녹게되는 것이다.Then, when the freezing state of the road is determined, the control unit 440 outputs the charged electricity to the heating heating wire 500, the heating heating wire 500 emits the heating heat, the crystals of the road by the heating heat is evaporated or melted will be.

본 발명에 따른 다른 실시예로서, 도로의 결빙상태가 판단하여 도로가 결빙되지 않은 상태인 경우 제어부(440)가 이를 판단하여 상기 충전부(430)와 연결된 와이어를 통해 주변의 표지판 또는 가로등을 점등시키게 된다.As another embodiment according to the present invention, when the freezing state of the road is determined and the road is not frozen, the control unit 440 determines this to turn on the signs or street lamps around the wires connected to the charging unit 430. do.

따라서 본 발명에 따른 도로의 결빙 방지 기능을 갖는 방음벽은, 도로에 설치된 방음벽에 태양열을 이용한 태양전지를 구비하므로써, 도로 결빙시 제어부에 의해 충전된 전기에너지가 히팅열선을 가열시켜 도로 또는 철로의 결빙을 방지 그리고 도로가 결빙상태가 아닌 경우 주변 표지판 또는 가로등을 점등시킬 수 있는 효과가 있다.Therefore, the soundproof wall having the function of preventing the freezing of the road according to the present invention includes a solar cell using solar heat in the soundproof wall installed on the road, so that the electric energy charged by the controller during heating of the road heats the heating heating wire to freeze the road or railroad. And there is an effect that can light the surrounding signs or street lights when the road is not frozen.

Claims (4)

도로의 가장자리에 위치되는 방음벽;Soundproof walls located at the edge of the roadway; 상기 방음벽의 상단에 길이방향으로 고정 설치되며, 반원통 파이프형의 구조를 가지도록 볼록한 융기부가 도로 방향으로 돌출되는 볼록체와, 상기 볼록체에 연장되어 도로의 외측 방향으로 소정폭 연장된 확장부, 및 상기 확장부에 연장되어 상기 방음벽 상단에 고정되는 커버로 구성된 소음감소부재;It is fixed to the upper end of the soundproof wall in the longitudinal direction, the convex bulge protruding in the direction of the road to have a semi-cylindrical pipe-like structure, and the extension extending to the convex body extending a predetermined width in the outward direction of the road A noise reduction member comprising a cover extending to the expansion part and fixed to an upper end of the soundproof wall; 상기 소음감소부재의 확장부 상면에 설치되어 태양열을 집열하는 집열판;A heat collecting plate installed on an upper surface of the expansion part of the noise reduction member to collect solar heat; 상기 볼록체의 외측 절곡홈에 위치되며 상기 집열판에 의해 집열된 에너지를 축열시키는 축열조와, 상기 축열조를 통해 축열된 에너지를 전기에너지로 변환시키는 변환기와, 상기 변환기를 통한 전기에너지를 충전시키며 필요시 상기 도로에 설치된 히팅열선을 가열시키는 충전부, 및 이들로부터 입력된 신호값에 따라 상기 히팅열선의 가열 또는 충전량을 제어하게 되는 제어부로 구성된 축전수단; 및A heat storage tank located in the outer bent groove of the convex body and accumulating the energy collected by the heat collecting plate, a converter for converting the energy stored in the heat storage tank into electric energy, and charging the electric energy through the converter if necessary. Power storage means including a charging unit for heating the heating heating wire installed on the road, and a control unit controlling the heating or filling amount of the heating heating wire according to a signal value inputted from the heating heating wire; And 상기 도로의 결빙상태를 판단하여 도로의 결빙시 히팅열선을 가열시키도록 상기 제어부에 신호를 송신하는 센서를 포함하는 것을 특징으로 하는 도로의 결빙 방지 기능을 갖는 태양열 방음벽.And a sensor for transmitting a signal to the controller to determine the freezing state of the road and to heat the heating heating wire during the freezing of the road. 삭제delete 삭제delete 삭제delete
KR10-2002-0017499A 2002-03-29 2002-03-29 A solar heat soundproofed wall prevent freezing prevent of road KR100457165B1 (en)

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KR101333146B1 (en) * 2012-06-20 2013-11-26 강원대학교산학협력단 System for preventing drifted snow for the interance in road furniture
CN103911934A (en) * 2013-01-07 2014-07-09 葛以兵 Snow thawing apparatus

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