KR101040215B1 - Street light having function of surge protection - Google Patents

Street light having function of surge protection Download PDF

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Publication number
KR101040215B1
KR101040215B1 KR1020100112179A KR20100112179A KR101040215B1 KR 101040215 B1 KR101040215 B1 KR 101040215B1 KR 1020100112179 A KR1020100112179 A KR 1020100112179A KR 20100112179 A KR20100112179 A KR 20100112179A KR 101040215 B1 KR101040215 B1 KR 101040215B1
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South Korea
Prior art keywords
surge
lamp
lightning arrester
power supply
arrester
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KR1020100112179A
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Korean (ko)
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안휘숙
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(주) 이미지라이트
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    • 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
    • F21V25/00—Safety devices structurally associated with lighting devices
    • F21V25/02—Safety devices structurally associated with lighting devices coming into action when lighting device is disturbed, dismounted, or broken
    • 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
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10—Outdoor lighting
    • F21W2131/103—Outdoor lighting of streets or roads
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/72—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

PURPOSE: A surge protector for a lighting lamp for a support is provided to protect a streetlamp from an abnormal voltage and to use the streetlamp for a long time without exchanging a lamp of the streetlamp when the abnormal voltage is generated instantaneously. CONSTITUTION: A surge protector for a lighting lamp for a support comprises varistors(VA1,VA2), a lightning arrester(16), and a lightning arrester ground plate. A power supply(14) is connected to a power supply line for supplying a power source to a lamp(7) and a control panel(12). The varistors receive a surge voltage due to an abnormal voltage. The lightning arrester is connected to each output line of the varistors to discharge the surge voltage. A lightning arrester ground portion(18) is formed at one end of the lightning arrester. The lightning arrester ground plate is connected to the lightning arrester ground portion to apply the discharged surge current to the ground.

Description

지주용 조명등의 서지보호기{Street Light having function of Surge protection}Street light having function of Surge protection

본 발명은 가로등에 관한 것으로, 보다 상세하게는 순간적으로 이상전압이 발생할 경우, 이상전압으로부터 가로등을 보호할 수 있도록 한 지주용 조명등의 서지보호기에 관한 것이다.
The present invention relates to a street lamp, and more particularly, to a surge protector such as a lighting lamp for holding a lamp to protect the street lamp from the abnormal voltage when an abnormal voltage occurs momentarily.

일반적으로 가로등(街路燈, street light) 이란, 가로교통의 안전과 보안을 위하여 가로를 따라서 설치한 조명시설이다.
In general, street light is a lighting facility installed along a street for the safety and security of road traffic.

이러한 가로등은 고속도로, 시가지의 주요도로, 상업지구 도로, 주택지구 도로 등 설치장소에 따라 그에 알맞은 종류가 사용되고, 가로등 전주의 형식에는 여러 가지가 있는데, 전주의 끝부분을 구부려서 그 끝에 등을 다는 하이웨이형(型), 전주의 끝부분에 가로로 가지를 뻗게 하여 거기에 등을 다는 브래킷형(型), 전주의 꼭대기에 등을 다는 주두형(柱頭型) 등이 있다.
These street lamps are used according to the installation location such as highways, main roads of the city, commercial district roads, and residential district roads, and there are various types of street lamp poles. There are a shape, a bracket shape extending horizontally at the end of the pole, and a head shape hanging on the top of the pole.

광원(光源)으로는 고압수은등(高壓水銀燈)·형광등·나트륨등·보통 전구(電球) 등이 사용되고, 요즈음에는 엘이디(led) 도 사용된다.
As a light source, a high-pressure mercury lamp, a fluorescent lamp, a sodium lamp, an electric bulb, and the like are usually used, and an LED is also used these days.

상기한 가로등은 도 1에 도시된 바와 같이, 지상에 수직으로 고정되는 가로등지주(1)와, 상기 가로등지주(1)의 상단에 일체로 결합되어 도로쪽으로 연장된 평형팔(3)과, 상기 평형팔(3)의 단부에 일체로 결합된 알루미늄 재질의 전등기구(5)로 구성되어 있다.
As shown in FIG. 1, the street lamp includes a street lamp holder 1 fixed vertically to the ground, an arm 3 coupled to an upper end of the street lamp holder 1 and extending toward the road, and It is composed of a light fixture 5 made of aluminum integrally coupled to the end of the balance arm (3).

상기 전등기구(5)는 지중으로부터 가로등지주(1)의 내부를 통하여 전력을 공급받을 수 있도록 하고, 전등기구(5)에 구비되는 전등(7)은 투명한 강화 플라스틱 재질의 커버(9)를 탈거한 후 교체할 수 있다.
The light fixture (5) is to receive power from the ground through the interior of the street lamp holder (1), the light (7) provided in the light fixture (5) is removed from the cover 9 of transparent reinforced plastic material Can be replaced.

그러나, 상기와 같이 설치된 가로등에 낙뢰 등으로 인한 이상전압이 발생할 경우, 가로등의 전등이 파손되는바, 가로등으로서의 기능을 상실하는 심각한 문제점이 있었다.
However, when an abnormal voltage occurs due to a lightning strike to the street lamp installed as described above, the lamp of the street lamp is broken, and thus there is a serious problem of losing its function as a street lamp.

이로 인해, 가로등의 전등을 교체하기 위해서는 사다리나 크레인을 동원하여야 하는바, 크레인 조종사와 보조작업자 등 최소한 2명의 작업인원이 소요되어 유지보수 비용이 많이 들게 되는 단점이 있었다.
For this reason, in order to replace the lamp of the street lamp, a ladder or a crane must be mobilized, and at least two workmen, such as a crane pilot and an assistant worker, require a lot of maintenance costs.

그리고, 도로에서 크레인을 정차시키고 가로등의 유지보수 작업을 하여야 하기 때문에 도심의 교통 정체를 유발하고 고도작업에 위험이 따르는 폐단이 있었다.
In addition, since the crane has to be stopped on the road and maintenance work of the street lamps has occurred, there have been closures that cause traffic congestion in the city and risks in altitude work.

본 발명은 상기와 같은 문제점을 해결하기 위해 안출 된 것으로서, 그 목적은 순간적으로 이상전압이 발생할 경우, 이상전압으로부터 가로등을 보호함과 아울러 가로등의 전등의 교체 없이 장시간 사용할 수 있도록 한 지주용 조명등의 서지보호기를 제공하는 데 있다.
The present invention has been made to solve the above problems, the object of the present invention is to protect the street lamp from the abnormal voltage in the event of an abnormal voltage instantaneously, such as holding lamps that can be used for a long time without replacing the lamp of the street lamp To provide a surge protector.

상기의 목적을 달성하기 위한 본 발명의 특징에 따르면,According to a feature of the present invention for achieving the above object,

전등(7) 및 제어패널(12)로 전원을 공급하는 전원공급라인에 전원공급부(14)가 연결 설치되되, 이상전압에 의한 서지전압이 인가되는 배리스터(VA1, VA2)와;A varistor (VA1, VA2) having a power supply unit (14) connected to and installed on a power supply line for supplying power to the lamp (7) and the control panel (12);

상기 배리스터(VA1, VA2)의 각 출력라인에 연결되어 서지전압을 방전하되, 일단에 피뢰기접지부(18)를 구비한 피뢰기(16)와, 상기 피뢰기접지부(18)에 연결되어 방전되는 서지전류를 지면으로 흘려주는 피뢰기접지판을 포함하여 구성된다.
A surge is connected to each output line of the varistors VA1 and VA2 to discharge a surge voltage, but a surge arrester 16 having an arrester ground portion 18 at one end and a surge connected to the arrester ground portion 18 are discharged. It includes a lightning arrester grounding plate for flowing a current to the ground.

상기의 목적을 달성하기 위한 본 발명의 다른 특징에 따르면,According to another feature of the present invention for achieving the above object,

전등(7)으로 전원을 공급하는 전원공급라인에 전원공급부(14)가 연결 설치되되, 상기 전원공급부(14)에 병렬로 연결되어 전압을 강하시키는 저항(R1,R2,R3,R4)와;A power supply unit (14) connected to the power supply line for supplying power to the lamp (7), the resistors (R1, R2, R3, R4) connected in parallel to the power supply unit (14) to drop a voltage;

상기 저항(R1,R2)과 저항(R3,R4) 사이와, 부하선과 피뢰접지부(18) 사이에 각각 연결되어 이상전압 유입시 방전에 의해서 방전에너지를 소모시키는 서지방전기(S1,S2,S3)와;West local electricity (S1, S2, S3) connected between the resistors (R1, R2) and resistors (R3, R4), and between the load line and the lightning arrester 18, respectively, to consume discharge energy by discharge when an abnormal voltage is introduced. )Wow;

상기 피뢰기접지부(18)에 연결되어 방전되는 서지전류를 지면으로 흘려주는 피뢰기접지판을 포함하여 구성되되,It is configured to include a lightning arrester grounding plate connected to the arrester grounding portion 18 for flowing a discharge current discharged to the ground,

여기서, 상기 서지방전기(S2)와 서지방전기(S3) 사이에 라인필터(LINE FILTER)(LF1)가 설치되고,Here, a line filter (LINE FILTER) (LF1) is installed between the western district electricity (S2) and the western district electricity (S3),

상기 저항(R1,R2,R3,R4)의 저항치는 80Ω ∼ 100Ω이다.
The resistance values of the resistors R1, R2, R3, and R4 are 80 kPa to 100 kPa.

본 발명에 따른 지주용 조명등의 서지보호기는 순간적으로 이상전압이 발생할 경우, 이상전압으로부터 가로등을 보호하는 효과가 있다.The surge protector of the lamp for holding according to the present invention has an effect of protecting the street lamp from the abnormal voltage when an abnormal voltage occurs momentarily.

그리고, 본 발명은 가로등의 전등의 교체 없이 장시간 사용할 수 있는 효과가 있다.In addition, the present invention has the effect that can be used for a long time without replacing the lamp of the street light.

따라서, 가로등의 전등을 자주 교체할 필요가 없기 때문에, 교체에 따른 인건비를 줄 일 수 있는 효과가 있다.
Therefore, since it is not necessary to replace the lamp of the street lamp often, there is an effect that can reduce the labor cost of replacement.

도 1은 일반적인 가로등을 개략적으로 나타낸 도면,
도 2는 본 발명에 따른 지주용 조명등의 서지보호기를 개략적으로 나타낸 도면,
도 3은 도 2의 서지보호수단을 나타낸 도면,
도 4는 도 2의 서지보호수단의 다른 실시예를 나타낸 도면이다.1 is a view schematically showing a general street lamp,
Figure 2 is a view schematically showing a surge protector of the lamp for holdings in accordance with the present invention,
3 is a view showing the surge protection means of FIG.
4 is a view showing another embodiment of the surge protection means of FIG.

이하, 첨부된 도면을 참조하여 본 발명에 따른 지주용 조명등의 서지보호기의 바람직한 실시예를 상세히 설명한다.
Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the surge protector of the lamp for holding according to the present invention in detail.

도 2는 본 발명에 따른 지주용 조명등의 서지보호기를 개략적으로 나타낸 도면이고, 도 3은 도 2의 서지보호수단을 나타낸 도면이다.
Figure 2 is a view schematically showing a surge protector of the lamp for holdings according to the present invention, Figure 3 is a view showing the surge protection means of FIG.

도 2 내지 도 3에 도시된 바와 같이 본 발명에 따른 지주용 조명등의 서지보호기는,2 to 3, the surge protector of the lamp for holding according to the present invention,

전등(7) 및 제어패널(12)로 전원을 공급하는 전원공급라인에 전원공급부(14)가 연결 설치되되, 이상전압에 의한 서지전압이 인가되는 배리스터(VA1, VA2)와;A varistor (VA1, VA2) having a power supply unit (14) connected to and installed on a power supply line for supplying power to the lamp (7) and the control panel (12);

상기 배리스터(VA1, VA2)의 각 출력라인에 연결되어 서지전압을 방전하되, 일단에 피뢰기접지부(18)를 구비한 피뢰기(16, LIGHTING ARREST OR)와, 상기 피뢰기접지부 (18)에 연결되어 방전되는 서지전류를 지면으로 흘려주는 피뢰기접지판(도시는 생략함)으로 구성된다.
Connected to each output line of the varistors (VA1, VA2) to discharge the surge voltage, but connected to the lightning arrester (16, Lightning Arrester OR) having a lightning arrester grounding portion 18 at one end, and the lightning arrester grounding portion (18) It consists of an arrester ground plate (not shown) for flowing the discharged surge current to the ground.

여기서, 전기공사법에 의거, 접지선은 일정높이까지 합성수지관이나 보호관으로 보호되어야 하고, 피뢰기 접지판은 지하 소정 깊이에 매설되어야 하며, 접지방식 또한 400V 미만에서는 제3종 접지공사를 하여야 하나,Here, according to the electric construction method, the grounding wire should be protected by a synthetic resin tube or a protective tube to a certain height, the arrester ground plate should be buried at a predetermined depth underground, and if the grounding method is also less than 400V, the third type grounding work should be done.

전기공사법에 의한 접지공사의 상세한 설명은 생락한다. 접지는 신호등철주나 철주내부 또는 피뢰도선의 피뢰접지판에 접지 가능하나,Detailed description of the grounding work by the electric construction method is omitted. Grounding can be done on the light pole, inside the column, or on the lightning rod of the lightning conductor.

철주의 저항과 상용전원과 제어신호에 대한 서지의 유도현상 및 대지전위의 상승에 의한 서지의 역유입을 차단하기 위해서 별도의 피뢰기 접지판을 구비하는 것이 바람직하다.
It is preferable to provide a separate lightning arrester ground plate in order to prevent the induction of the surge against the resistance of the barbed wire, the commercial power supply and the control signal, and the reverse inflow of the surge due to the rise of the earth potential.

그리고, 상기 피로기(16)와 상기 배리스터(VA1, VA2)는 보호케이스(도시는 생략함)에 설치되는 것이 바람직하다.
In addition, the fatigue apparatus 16 and the varistors VA1 and VA2 are preferably installed in a protective case (not shown).

상기와 같이 구성된 본 발명에 따른 지주용 조명등의 서지보호기의 동작을 설명하면 다음과 같다.
Referring to the operation of the surge protector of the lamp for holding according to the present invention configured as described above are as follows.

가로등에 낙뢰가 떨어지면, 배리스터(VA1,VA2)의 저항이 이상전압에 따라 변화되어 피뢰기(16)로 서지파가 입력된다.
When lightning strikes the street lamp, the resistances of the varistors VA1 and VA2 change according to the abnormal voltage, and a surge wave is input to the arrester 16.

상기 피뢰기(16)는 이상전압인 서지파가 내습하면 내부에서 방전이 일The surge arrester 16 discharges internally when a surge wave having an abnormal voltage is invaded.

어나 과전류를 피뢰기접지부(18)를 통해 지면의 피뢰기 접지판(도시는 생략함)으로 방전하여, 이상전압을 제한하고 전기기기(전등과 제어패널)를 보호한다.
However, the overcurrent is discharged to the arrester ground plate (not shown) of the ground through the arrester grounding unit 18 to limit the abnormal voltage and protect the electrical equipment (light and control panel).

또한, 이상전압이 소멸된 후에는 교류전원의 상시전압이 선로와 피뢰기(16)를 통하여 계속하여 흐르게 되는데 이를 속류라 한다.
In addition, after the abnormal voltage is eliminated, the constant voltage of the AC power continues to flow through the line and the arrester 16, which is referred to as a speed limit.

상기 피뢰기(16)는 상기 속류를 단시간에 차단하여 가로등의 전등(7)을 원상으로 복귀시키게 한다.
The lightning arrester 16 interrupts the rapid current in a short time to return the lamp 7 of the street lamp to its original state.

그리고, 도 4는 서지보호수단의 다른 실시예로써,And, Figure 4 is another embodiment of the surge protection means,

전등(7)으로 전원을 공급하는 전원공급라인에 전원공급부(14)가 연결 설치되되, 상기 전원공급부(14)에 병렬로 연결되어 전압을 강하시키는 저항(R1,R2,R3,R4)와;A power supply unit (14) connected to the power supply line for supplying power to the lamp (7), the resistors (R1, R2, R3, R4) connected in parallel to the power supply unit (14) to drop a voltage;

상기 저항(R1,R2)과 저항(R3,R4) 사이와, 부하선(도시는 생략함)과 피뢰접지부(18) 사이에 각각 연결되어 이상전압 유입시 방전에 의해서 방전에너지를 소모시키는 서지방전기(S1,S2,S3)와;The surge is connected between the resistors R1 and R2 and the resistors R3 and R4, and between the load line (not shown) and the lightning arrester 18, respectively. Dischargers S1, S2, S3;

상기 피뢰기접지부(18)에 연결되어 방전되는 서지전류를 지면으로 흘려주는 피뢰기접지판(도시는 생략함)으로 구성된다.
It is composed of an arrester ground plate (not shown) connected to the arrester grounding portion 18 for flowing a surge current discharged to the ground.

또한, 상기 서지방전기(S2)와 서지방전기(S3) 사이에 라인필터(LINE FILTER)(LF1)가 설치되는바, 상기 라인필터(LF1)는 저항(R1,R2,R3,R4)과 전등(7)에 연결된 부하선 사이에 연결되어 전원공급부(14)를 통해 유입되는 노이즈를 제거하는 역할을 한다.
In addition, a line filter LF1 is installed between the western district electricity S2 and the western district electricity S3, and the line filter LF1 includes resistors R1, R2, R3, and R4. It is connected between the load line connected to 7) serves to remove the noise flowing through the power supply (14).

그리고, 상기 저항(R1,R2,R3,R4)의 저항치는 80Ω ∼ 100Ω이다.
The resistance values of the resistors R1, R2, R3, and R4 are 80 kPa to 100 kPa.

상기한 도 4의 서지보호수단은, 이상 전압이 유입되면, 저항(R1,R2,R3,R4)에 의해 전압 강하가 일어난다.In the surge protection means of FIG. 4 described above, when an abnormal voltage is introduced, voltage drop occurs due to the resistors R1, R2, R3, and R4.

그리고, 전압 강하된 전압이 서지방전기(S1,S2,S3)에 유입되면, 상기 서지방전기(S1,S2,S3)에서 방전에 의해 방전에너지를 소모한다.Then, when the voltage drop voltage is introduced into the western local electricity (S1, S2, S3), the discharge energy is consumed by the discharge from the western local electricity (S1, S2, S3).

그리고, 라인필터(LF1)는 노이즈를 제거한다.
The line filter LF1 removes noise.

따라서, 상기 서지방전기(S1,S2,S3)에 의해 방전에너지가 소모되는바, 라인필터(LF1)에 연결된 전등(7)이 보호된다.
Therefore, the discharge energy is consumed by the western districts S1, S2, and S3, and the lamp 7 connected to the line filter LF1 is protected.

본 발명은 상기에 기술된 실시예들에 의해 한정되지 않고, 당업자들에 의해 다양한 변형 및 변경을 가져올 수 있으며, 이는 첨부된 청구항에서 정의되는 본 발명의 취지와 범위에 포함된다.
The present invention is not limited by the embodiments described above, and various changes and modifications can be made by those skilled in the art, which are included in the spirit and scope of the present invention as defined in the appended claims.

7 : 전등
12 : 제어패널
14 : 전원공급부
16 : 피뢰기
18 : 피로기접지부
VA1, VA2 : 배리스터
R1, R2, R3, R4 : 저항
서지방전기 : S1, S2, S37: light fixture
12: control panel
14 power supply unit
16: lightning arrester
18: fatigue ground unit
VA1, VA2: Varistor
R1, R2, R3, R4: Resistance
West Regional Electric: S1, S2, S3

Claims (2)

전등(7) 및 제어패널(12)로 전원을 공급하는 전원공급라인에 전원공급부(14)가 연결 설치되되, 이상전압에 의한 서지전압이 인가되는 배리스터(VA1, VA2)와;
상기 배리스터(VA1, VA2)의 각 출력라인에 연결되어 서지전압을 방전하되, 일단에 피뢰기접지부(18)를 구비한 피뢰기(16)와, 상기 피뢰기접지부 (18)에 연결되어 방전되는 서지전류를 지면으로 흘려주는 피뢰기접지판을 포함하여 구성된 것을 특징으로 하는 지주용 조명등의 서지보호기.
A varistor (VA1, VA2) having a power supply unit (14) connected to and installed on a power supply line for supplying power to the lamp (7) and the control panel (12);
A surge is connected to each output line of the varistors VA1 and VA2 to discharge a surge voltage, but a surge arrester 16 having an arrester ground portion 18 at one end and a surge connected to the arrester ground portion 18 are discharged. A surge protector for a prop lamp such as a lightning arrester ground plate configured to flow a current to the ground.
삭제delete
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016001614A3 (en) * 2014-07-01 2016-03-31 The Aluminium Lighting Company Ltd Monitoring the structural health of columns
EP3024302A1 (en) * 2014-11-21 2016-05-25 Schreder Surge protection for light-emitting diodes
CN106773492A (en) * 2017-03-17 2017-05-31 南京工业职业技术学院 A kind of multi-media information terminal based on intelligent road-lamp
AT16354U1 (en) * 2015-02-18 2019-07-15 Tridonic Gmbh & Co Kg Device for operating bulbs
US10365293B2 (en) 2014-07-01 2019-07-30 The Aluminium Lighting Company Ltd Monitoring the structural health of columns and like structures
KR102053607B1 (en) * 2018-10-12 2020-01-22 (주)광명라이팅 Pillar pipe for streetlight

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016001614A3 (en) * 2014-07-01 2016-03-31 The Aluminium Lighting Company Ltd Monitoring the structural health of columns
US9880190B2 (en) 2014-07-01 2018-01-30 The Aluminium Lighting Company Ltd Monitoring the structural health of columns
US10365293B2 (en) 2014-07-01 2019-07-30 The Aluminium Lighting Company Ltd Monitoring the structural health of columns and like structures
EP3024302A1 (en) * 2014-11-21 2016-05-25 Schreder Surge protection for light-emitting diodes
CN105636261A (en) * 2014-11-21 2016-06-01 施雷德公司 Surge protection for light-emitting diodes
US10117301B2 (en) 2014-11-21 2018-10-30 Schreder Surge protection for light-emitting diodes
CN110677948A (en) * 2014-11-21 2020-01-10 施雷德公司 Surge protection for light emitting diodes
AT16354U1 (en) * 2015-02-18 2019-07-15 Tridonic Gmbh & Co Kg Device for operating bulbs
CN106773492A (en) * 2017-03-17 2017-05-31 南京工业职业技术学院 A kind of multi-media information terminal based on intelligent road-lamp
CN106773492B (en) * 2017-03-17 2018-09-21 南京工业职业技术学院 A kind of multi-media information terminal based on intelligent road-lamp
KR102053607B1 (en) * 2018-10-12 2020-01-22 (주)광명라이팅 Pillar pipe for streetlight

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