JP2009245846A - Led street light - Google Patents

Led street light Download PDF

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Publication number
JP2009245846A
JP2009245846A JP2008092812A JP2008092812A JP2009245846A JP 2009245846 A JP2009245846 A JP 2009245846A JP 2008092812 A JP2008092812 A JP 2008092812A JP 2008092812 A JP2008092812 A JP 2008092812A JP 2009245846 A JP2009245846 A JP 2009245846A
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light
led
street light
led lamp
blue
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Yeh-Chin Chao
葉勤 趙
紅秋 ▲登▼
Hongqiu Deng
Lianshan Li
漣山 李
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SUZHOU MARSLEDS OPTOELECTRONIC
SUZHOU MARSLEDS OPTOELECTRONICS CO Ltd
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SUZHOU MARSLEDS OPTOELECTRONIC
SUZHOU MARSLEDS OPTOELECTRONICS CO Ltd
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Priority to JP2008092812A priority Critical patent/JP2009245846A/en
Publication of JP2009245846A publication Critical patent/JP2009245846A/en
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    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

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  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a street light with high luminous efficiency by a light source with high-intensity three-color light LEDs of blue, green and red synthesized into white-color light, and with longer usage life compared with a light source of a white light LED. <P>SOLUTION: A street light body 1 is set at a constant height on a road surface, with an opening 111 at a bottom facing to the road surface. A heat dissipation unit 2 is arranged in the street light body 1 and corresponds to the opening 111. A constant-current power supply 3 is arranged inside the street light body 1 to supply stable electric current. An LED lamp plate 4 coupled with the heat dissipation unit 2 is provided at a site facing to the opening 111 of the street light body 1. The LED lamp plate 4 includes a number of three color LED lamps 41 of red light, green light and blue light electrically connected on a side face facing to the heat dissipation unit 2, respectively. The three color LED lamps 41 of red light, green light and blue light are connected in series or parallel or both in series and parallel, respectively, and are driven by the constant current power supply 3. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、街路灯に関し、特に赤、緑、青の三色光発光ダイオード（以下、「発光ダイオード」を「ＬＥＤ」という。）によって合成される白色光のＬＥＤ街路灯に関する。   The present invention relates to a street light, and more particularly to a white light LED street light synthesized by red, green and blue three-color light emitting diodes (hereinafter, “light emitting diode” is referred to as “LED”).

現代においては、都市開発に伴い、道路建設の速さと品質を向上させ、夜間の交通をより安全にすることが求められるため、道路の両側に街路灯を設置することが必要である。近年、半導体技術の急速な進展に伴い、ＬＥＤ照明技術が伝統の照明器材に代わって活躍する傾向にある。ＬＥＤを利用する照明具は、安定性が高い、ちらつき現象が発生しない、色彩が多様である、色彩の表現に優れている、調節・制御が簡単であるという長所がある。また、ＬＥＤは点光源で、発光角度を制御しやすいため、特定の発光角度の光源を部分照明として使用することにより、光源に生じた光をより効果的に利用することが可能なだけでなく、比較的小さい電力により部分照明効果を満足させ、省エネルギーを実現させることが可能である。   In modern times, with urban development, it is necessary to improve the speed and quality of road construction and make night traffic safer, so it is necessary to install street lights on both sides of the road. In recent years, with the rapid development of semiconductor technology, LED lighting technology tends to play an active role in place of traditional lighting equipment. Lighting fixtures using LEDs have advantages such as high stability, no flickering phenomenon, various colors, excellent color expression, and simple adjustment and control. Moreover, since the LED is a point light source and the light emission angle is easy to control, not only can the light generated in the light source be used more effectively by using a light source with a specific light emission angle as partial illumination. It is possible to satisfy the partial lighting effect with relatively small electric power and realize energy saving.

従来、一般に街路灯は高圧ナトリウム灯及び各種の蛍光灯または白熱灯を採用したものであるが、その発光効率は僅か３０％であり、ほかの電気エネルギーは熱エネルギーに変換して消耗されてしまう。それに対し、近年ＬＥＤを街路灯として使用することにより省エネルギーを図るという傾向が強くなっている。ＬＥＤ街路灯は発光効率が高い、消耗電量が低い、反応速度が速い、使用寿命が長い、安全性が高い、環境保護に相応しいなどの特性があるため、ＬＥＤ街路灯は照明市場において潜在力が極めて大きい新世代の製品であるといえる。   Conventionally, street lamps generally employ high-pressure sodium lamps and various fluorescent lamps or incandescent lamps, but their luminous efficiency is only 30%, and other electric energy is converted into heat energy and consumed. . On the other hand, in recent years, there has been a tendency to save energy by using LEDs as street lamps. LED street lights have the characteristics of high luminous efficiency, low power consumption, fast reaction speed, long service life, high safety, suitable for environmental protection, etc. LED street lights have potential in the lighting market It can be said that it is an extremely large new generation product.

しかし、従来のＬＥＤ街路灯は白色光ＬＥＤを光源として採用し、かつ高輝度の需要を満たすように、１ワット、２ワットなど使用電力の大きい白色光ＬＥＤを組み合せて光源を作ることが一般的である。白色光ＬＥＤの発光原理は青色光チップに蛍光粉を加えることである。青色光チップは別の色のＬＥＤチップより輝度が低い。かつ蛍光粉は蛍光減衰が比較的大きいため、白色光ＬＥＤの光の減衰も比較的大きい。また使用電力の大きいＬＥＤの発熱量は普通のＬＥＤよりも高い。
従って、如何に上述の問題を解決するかということが本発明の課題である。 However, the conventional LED street light generally adopts white light LED as a light source, and in order to meet the demand for high brightness, it is common to make a light source by combining white light LEDs with high power consumption such as 1 watt and 2 watt. It is. The light emission principle of the white light LED is to add fluorescent powder to the blue light chip. Blue light chips have lower brightness than other color LED chips. Moreover, since the fluorescent powder has a relatively large fluorescence attenuation, the attenuation of the light of the white light LED is also relatively large. Moreover, the calorific value of the LED with large power consumption is higher than that of a normal LED.
Therefore, how to solve the above problem is an object of the present invention.

上述の問題を解決するため、本発明の主な目的は、高輝度の赤、緑、青の三色光ＬＥＤを白色光または暖白色光に合成して生成した街路灯の光源により、発光効率が大きく、白色光ＬＥＤの光源と比べて使用寿命が長い白色光のＬＥＤ街路灯を提供することである。   In order to solve the above-mentioned problems, the main object of the present invention is to improve the luminous efficiency by the light source of the street lamp generated by combining the high-brightness red, green, and blue three-color LED with white light or warm white light. The object is to provide a white-light LED street lamp that is large and has a longer service life than a white-light LED light source.

上述の目的を達成するために、本発明は街路灯本体、放熱ユニット、定流電源及びＬＥＤランプ板を備える。
街路灯本体は路面上の一定の高さの所に設置され、かつ街路灯本体は路面に対向する底部に開口部を有する。放熱ユニットは街路灯本体の中に配置され、かつ開口部に対応する。定流電源は安定した電流を供給するため街路灯本体の中に配置される。その特徴は次の通りである。街路灯本体は開口部に向かい合う所に放熱ユニットと接続するＬＥＤランプ板を有する。ＬＥＤランプ板は放熱ユニットに向かい合う一側面において電気的に接続される赤、緑、青の三色光ＬＥＤランプを多数有する。赤、緑、青の三色光ＬＥＤランプはそれぞれ直列または並列もしくは直列と並列との両方で接続され、定流電源によって駆動される。 In order to achieve the above object, the present invention includes a street light body, a heat dissipation unit, a constant current power source, and an LED lamp plate.
The street light main body is installed at a certain height on the road surface, and the street light main body has an opening at the bottom facing the road surface. The heat dissipating unit is disposed in the street light body and corresponds to the opening. The constant current power source is arranged in the street lamp body to supply a stable current. Its features are as follows. The street lamp body has an LED lamp plate connected to the heat radiating unit at a position facing the opening. The LED lamp plate has a large number of red, green, and blue three-color LED lamps that are electrically connected on one side facing the heat dissipation unit. The red, green, and blue three-color LED lamps are connected in series, in parallel, or both in series and in parallel, and are driven by a constant current power source.

（発明の効果）
本発明による赤、緑、青の三色光ＬＥＤは発光効率が高い。同じ電力及び条件の下では、白色光ＬＥＤから構成され使用電力の大きい街路灯と比べて、光源照度を１．５倍から３倍高めることができる。また、白色光ＬＥＤの光の減衰、及び、使用電力の大きいＬＥＤの発熱の問題を効果的に解決することができるうえに、省エネルギー効果が著しく、使用寿命が白色光ＬＥＤより長い。また赤、緑、青の三色光によって合成される光源は色彩が鮮明で、色彩の表現性に優れている。 (The invention's effect)
The red, green and blue three-color LEDs according to the present invention have high luminous efficiency. Under the same power and conditions, the illuminance of the light source can be increased by 1.5 to 3 times as compared with a street light composed of white light LEDs and having a large power consumption. In addition, the problem of attenuation of light of the white light LED and the problem of heat generation of the LED having large power consumption can be effectively solved, and the energy saving effect is remarkable, and the service life is longer than that of the white light LED. In addition, the light source synthesized by the three colors of red, green, and blue has a clear color and excellent color expression.

（一実施例）
以下、本発明の一実施例について、図面を用いて具体的に説明する。
図１と図２に示すような、本発明が採用した実施例の構造は説明のための一例に過ぎないため、本発明の権利範囲を制限するものではない。
図１、２に示すように、本実施例によると、赤、緑、青の三色光ＬＥＤによって合成される白色光のＬＥＤ街路灯は、街路灯本体１、放熱ユニット２、定流電源３及びＬＥＤランプ板４を備える。 (Example)
Hereinafter, an embodiment of the present invention will be specifically described with reference to the drawings.
The structure of the embodiment adopted by the present invention as shown in FIG. 1 and FIG. 2 is merely an example for explanation, and does not limit the scope of rights of the present invention.
As shown in FIGS. 1 and 2, according to the present embodiment, the white LED street light synthesized by the red, green, and blue three-color LEDs includes a street light body 1, a heat radiating unit 2, a constant current power source 3, and An LED lamp plate 4 is provided.

街路灯本体１は、路面上の一定の高さの所に設置され、かつ街路灯本体１は路面に対向する底部に開口部１１１を有する。放熱ユニット２は、街路灯本体１の中に配置され、かつ開口部１１１に対応する。定流電源３は、安定した電流を供給するため街路灯本体１の中に配置される。その特徴は次の通りである。街路灯本体１は、開口部１１１と向かい合う位置に、放熱ユニット２と連結されたＬＥＤランプ板４を有する。ＬＥＤランプ板４は、放熱ユニット２に向かい合う一側面において電気的に接続される赤色光、緑色光、青色光の三色のＬＥＤランプ４１をそれぞれ多数有する。赤色光、緑色光、青色光の三色のＬＥＤランプ４１はそれぞれ直列または並列もしくは直列と並列との両方で接続され、定流電源３によって駆動される。   The street light main body 1 is installed at a certain height on the road surface, and the street light main body 1 has an opening 111 at the bottom facing the road surface. The heat radiating unit 2 is disposed in the street light main body 1 and corresponds to the opening 111. The constant current power source 3 is disposed in the street lamp body 1 in order to supply a stable current. Its features are as follows. The street lamp main body 1 has an LED lamp plate 4 connected to the heat dissipation unit 2 at a position facing the opening 111. The LED lamp plate 4 has a large number of LED lamps 41 of three colors of red light, green light, and blue light, which are electrically connected on one side facing the heat dissipation unit 2. The LED lamps 41 of the three colors of red light, green light, and blue light are connected in series, in parallel, or both in series and in parallel, and are driven by the constant current power supply 3.

本実施例では、街路灯本体１はさらにケース１１とカバー１２を有する。ケース１１は、アーム７によって路面上の一定の高さの所に設置される。ケース１１は、路面に対する底部に開口部１１１を有する。定流電源３及びＬＥＤランプ板４は、ケース１１の中に配置される。ＬＥＤランプ板４の上の数多くのＬＥＤランプ４１は、開口部１１１に対応する。放熱ユニット２は、ＬＥＤランプ板４に対応するケース１１の外側に装着される。また、ＬＥＤランプ板４のＬＥＤランプ４１が配置された一側面に軟膏状の導熱シリコン樹脂及び柔軟性の導熱シリコンフィルム５を被せることにより、ＬＥＤランプ板４は放熱ユニット２と接続される。ＬＥＤランプ４１は、はんだ付けによってＬＥＤランプ板４に電気的に接続される。ケース１１は、放熱ユニット２の上方にカバー１２を有する。ケース１１は、開口部１１１にすりガラス６を有する。   In the present embodiment, the street light main body 1 further includes a case 11 and a cover 12. The case 11 is installed at a certain height on the road surface by the arm 7. The case 11 has an opening 111 at the bottom with respect to the road surface. The constant current power source 3 and the LED lamp plate 4 are disposed in the case 11. A number of LED lamps 41 on the LED lamp plate 4 correspond to the openings 111. The heat radiating unit 2 is attached to the outside of the case 11 corresponding to the LED lamp plate 4. Further, the LED lamp plate 4 is connected to the heat radiating unit 2 by covering the one side surface of the LED lamp plate 4 on which the LED lamp 41 is disposed with an ointment-like heat conductive silicon resin and a flexible heat conductive silicon film 5. The LED lamp 41 is electrically connected to the LED lamp plate 4 by soldering. The case 11 has a cover 12 above the heat radiating unit 2. Case 11 has ground glass 6 in opening 111.

ＬＥＤランプ板４の上の赤色光、緑色光、青色光の三色のＬＥＤランプ４１は、均等に配列される。そのうちの赤色光のＬＥＤランプ４１の波長は６１０ｎｍから６４０ｎｍであり、緑色光のＬＥＤランプ４１の波長は５１０ｎｍから５４０ｎｍであり、青色光のＬＥＤランプ４１の波長は４５０ｎｍから４８０ｎｍである。ＬＥＤの波長及び電流によって、ＬＥＤランプ板４の上の赤色光、緑色光、青色光の三色のＬＥＤランプ４１の輝度を一定の輝度比の範囲で調節し、白色光または暖白色光を生成する。赤色光、緑色光、青色光の三色のＬＥＤランプ４１のそれぞれの総輝度の比Ｒ：Ｇ：Ｂの範囲は、２≦Ｒ≦４、５Ｇ≦７、０．５≦Ｂ≦２である。本実施例では赤、緑、青の輝度比をＲ：Ｇ：Ｂ＝３：６：１とする。   The LED lamps 41 of the three colors of red light, green light, and blue light on the LED lamp plate 4 are arranged uniformly. The wavelength of the red LED lamp 41 is 610 nm to 640 nm, the wavelength of the green LED lamp 41 is 510 nm to 540 nm, and the wavelength of the blue LED lamp 41 is 450 nm to 480 nm. Depending on the wavelength and current of the LED, the brightness of the LED lamp 41 of the three colors of red light, green light and blue light on the LED lamp plate 4 is adjusted within a certain brightness ratio range to generate white light or warm white light. To do. The ratio R: G: B of the total luminance of the red, green and blue LED lamps 41 is 2 ≦ R ≦ 4, 5G ≦ 7, and 0.5 ≦ B ≦ 2. . In this embodiment, the luminance ratio of red, green, and blue is R: G: B = 3: 6: 1.

各ＬＥＤランプ４１は定流電源によって駆動されるため、ちらつき現象が発生することなく均質に発光し、本実施例によると街路灯の使用における用途・要求に応じることが可能なだけでなく、従来のＬＥＤ街路灯のＬＥＤランプと比べて使用寿命が長くなる。また道路照明の要求に応じるため、楕円形のレンズを用いると、発光面が楕円形になり、かつ、電力が８０ＷであるＬＥＤ街路灯を使用することができる。このＬＥＤ光源から１０メートルでの中心照度は４２Ｌｕｘより大きく、照射面が楕円形であるため、街路灯の要求を大いに満足させることができる。   Since each LED lamp 41 is driven by a constant current power source, it emits light uniformly without causing a flickering phenomenon, and according to this embodiment, not only can it meet the application / requirements in the use of street lamps, The service life is longer than that of LED street lamps. Further, in order to meet the demand for road illumination, when an elliptical lens is used, an LED street light having an elliptical light emitting surface and power of 80 W can be used. The center illuminance at 10 meters from this LED light source is greater than 42 Lux, and the illuminated surface is elliptical, which can greatly satisfy the requirements of street lamps.

またＬＥＤランプ板４は、軟膏状の導熱シリコン樹脂及び柔軟性の導熱シリコンフィルム５によって放熱ユニット２に接続されるため、ＬＥＤランプ４１の熱エネルギーをよりよく導き出すことが可能であり、かつ、すりガラス６によって二次混色を行うため、表示した光色と実際の光色との一致がより良好に実現する。   Further, since the LED lamp plate 4 is connected to the heat radiation unit 2 by an ointment-like heat conductive silicon resin and a flexible heat conductive silicon film 5, it is possible to better derive the heat energy of the LED lamp 41, and ground glass. Since the secondary color mixing is performed according to No. 6, the displayed light color and the actual light color are better matched.

本発明の一実施例の外観を示す模式図である。It is a schematic diagram which shows the external appearance of one Example of this invention. 本発明の一実施例の構造を示す断面の模式図である。It is a schematic diagram of the cross section which shows the structure of one Example of this invention.

符号の説明Explanation of symbols

１：街路灯本体、 １１：ケース、 １１１：開口部、 １２：カバー、 ２：放熱ユニット、 ３：定流電源、 ４：ＬＥＤランプ板、 ４１：ＬＥＤランプ、 ５：導熱シリコンフィルム、 ６：すりガラス 1: street light body, 11: case, 111: opening, 12: cover, 2: heat dissipation unit, 3: constant current power supply, 4: LED lamp plate, 41: LED lamp, 5: heat conducting silicon film, 6: ground glass

Claims (8)

街路灯本体、放熱ユニット、定流電源及びＬＥＤランプ板を備え、
路面上の一定の高さの所に設置され、路面に対向する底部に開口部を有しする街路灯本体と、
前記街路灯本体の中に配置されて前記開口部に対応した放熱ユニットと、
前記街路灯本体の中に配置されて安定した電流を供給する定流電源と、
前記街路灯本体において前記開口部に向かい合う所に設けられ、前記放熱ユニットと接続されたＬＥＤランプ板と、を備え、
前記ＬＥＤランプ板は、前記放熱ユニットに向かい合う一側面において電気的に接続される赤、緑、青の三色光ＬＥＤランプを有し、前記赤、緑、青の三色光ＬＥＤランプがそれぞれ、直列または並列に、もしくは直列及び並列の両方で接続され、定流電源によって駆動されることを特徴とする白色光のＬＥＤ街路灯。 Equipped with street light body, heat dissipation unit, constant current power supply and LED lamp plate,
A street light body installed at a certain height on the road surface and having an opening at the bottom facing the road surface;
A heat dissipating unit disposed in the street light body and corresponding to the opening;
A constant current power source arranged in the street light body to supply a stable current;
An LED lamp plate provided in a place facing the opening in the street light body, and connected to the heat dissipation unit,
The LED lamp plate has red, green, and blue three-color LED lamps that are electrically connected on one side facing the heat dissipation unit, and the red, green, and blue three-color LED lamps are respectively connected in series or A white light LED street light, connected in parallel or both in series and parallel and driven by a constant current power supply. 前記ＬＥＤランプ板の上の前記赤、緑、青の三色光ＬＥＤランプは、均等に配列されることを特徴とする請求項１に記載の白色光のＬＥＤ街路灯。   2. The white LED street light according to claim 1, wherein the red, green and blue three-color LED lamps on the LED lamp plate are evenly arranged. 前記赤、緑、青の三色光ＬＥＤランプのうち、赤色光ＬＥＤランプの波長は６１０ｎｍから６４０ｎｍであり、緑色光ＬＥＤランプの波長は５１０ｎｍから５４０ｎｍであり、青色光ＬＥＤランプの波長は４５０ｎｍから４８０ｎｍであることを特徴とする請求項１に記載の白色光のＬＥＤ街路灯。   Among the red, green and blue three-color LED lamps, the red LED lamp has a wavelength of 610 nm to 640 nm, the green LED lamp has a wavelength of 510 nm to 540 nm, and the blue LED lamp has a wavelength of 450 nm to 480 nm. The white-light LED street lamp according to claim 1, wherein: 前記ＬＥＤランプ板の上の前記赤、緑、青の三色光ＬＥＤランプの総輝度比をＲ：Ｇ：Ｂとすると、２≦Ｒ≦４、５≦Ｇ≦７、及び０．５≦Ｂ≦２であることを特徴とする請求項１に記載白色光のＬＥＤ街路灯。   When the total luminance ratio of the red, green and blue three-color LED lamps on the LED lamp plate is R: G: B, 2 ≦ R ≦ 4, 5 ≦ G ≦ 7, and 0.5 ≦ B ≦. The white LED street light according to claim 1, wherein the LED street light is white light. 前記赤、緑、青の三色光ＬＥＤランプの照射光による照射面の形は楕円形であることを特徴とする請求項１に記載の白色光のＬＥＤ街路灯。   2. The white LED street light according to claim 1, wherein a shape of an irradiation surface of the red, green, and blue three-color LED lamps irradiated with light is elliptical. 前記街路灯本体はさらにケースとカバーとを有し、
前記ケースはアームによって路面上の一定の高さの所に設置され、かつ、前記ケースは路面に対する底部に前記開口部を有し、
前記定流電源と前記ＬＥＤランプ板とは前記ケースの中に配置され、
前記ＬＥＤランプ板の上の数多くのＬＥＤランプは前記開口部に対応し、
前記放熱ユニットは前記ＬＥＤランプ板に対応する前記ケースの外側に装着されることを特徴とする請求項１に記載の白色光のＬＥＤ街路灯。 The street light body further has a case and a cover,
The case is installed at a certain height on the road surface by an arm, and the case has the opening at the bottom with respect to the road surface,
The constant current power source and the LED lamp plate are arranged in the case,
A number of LED lamps on the LED lamp plate correspond to the openings,
The white light LED street light according to claim 1, wherein the heat dissipating unit is mounted outside the case corresponding to the LED lamp plate. 前記ＬＥＤランプ板は、前記ＬＥＤランプが配置された一側面に軟膏状の導熱シリコン樹脂及び柔軟性の導熱シリコンフィルムを被せることにより前記放熱ユニットと接続されることを特徴とする請求項６に記載の白色光のＬＥＤ街路灯。   The LED lamp plate is connected to the heat radiating unit by covering an ointment-like heat conductive silicon resin and a flexible heat conductive silicon film on one side surface on which the LED lamp is disposed. LED street light with white light. 前記ケースは、前記開口部にすりガラスを有することを特徴とする請求項６に記載の白色光のＬＥＤ街路灯。   The white light LED street light according to claim 6, wherein the case has ground glass in the opening.
JP2008092812A 2008-03-31 2008-03-31 Led street light Pending JP2009245846A (en)

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