JP4113754B2 - LED low position illumination method and LED low position illumination device - Google Patents

LED low position illumination method and LED low position illumination device Download PDF

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Publication number
JP4113754B2
JP4113754B2 JP2002282323A JP2002282323A JP4113754B2 JP 4113754 B2 JP4113754 B2 JP 4113754B2 JP 2002282323 A JP2002282323 A JP 2002282323A JP 2002282323 A JP2002282323 A JP 2002282323A JP 4113754 B2 JP4113754 B2 JP 4113754B2
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Prior art keywords
angle
led
road
lane
irradiator
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JP2004116177A (en
Inventor
雄二 遠藤
昭 高橋
一生 森
啓太 壺井
慶三 後藤
広之 三輪
信之 坂田
雅善 松田
孝人 岡本
聡 真木
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Iwasaki Denki KK
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Iwasaki Denki KK
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    • 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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  • Traffic Control Systems (AREA)

Description

【０００１】
本発明はＬＥＤ低位置道路照明方式及びＬＥＤ低位置道路照明装置の改良に関する。
【０００２】
【従来の技術】
従来、道路の低位置照明として、例えば特許第２８３０６９３号公報に掲載されているように、光透過窓を有する中空パイプの端部に光源を配置して照明装置を構成し、各照明装置を道路の低位置に連続的に配置してなる道路照明装置が実施されている。
【０００３】
【発明が解決しようとする課題】
ところで、上記した道路照明装置によると、路肩の狭い道路やカーブしている道路では配光制御が困難となり、所望の明るさを確保できず、また路面における均斉度が低い欠点がある。
【０００４】
本発明は上記の点に鑑み発明したもので、所望の明るさを確保することができ、また路面における均斉度が向上し、さらに視認性と視線の誘導効果を高めることができるＬＥＤ低位置道路照明方式及びＬＥＤ低位置道路照明装置を提供することを目的とする。
【０００５】
【課題を解決するための手段】
以下本発明を請求項１及び請求項２について説明する。請求項１に記載のＬＥＤ低位置道路照明方式は、路肩、走行車線、及び、追い越し車線が並設された道路の前記路肩に、前記路肩を照射する広角用ＬＥＤ照射器と、前記走行車線を照射する中角用ＬＥＤ照射器と、前記追い越し車線を照射する狭角用ＬＥＤ照射器を有し、前記広角用ＬＥＤ照射器、前記中角用ＬＥＤ照射器及び前記狭角用ＬＥＤ照射器による照射により、前記道路の平均路面輝度を０．５ｃｄ／ｍ 2 以上、前記走行車線と前記追い越し車線における総合均斉度を０．５５以上、グレアを１２５（ｃｄ）以下とする照射ユニットを一定の間隔を有して複数配置し、また同照射ユニットにおける中角用ＬＥＤ照射器と狭角用ＬＥＤ照射器は、前記道路の横断方向を基準に、車両の走行方向とは逆方向に角度を有して指向していることを特徴とする。
【０００９】
上記した請求項１記載のＬＥＤ低位置道路照明方式によると、路肩、走行車線、及び、追い越し車線が並設された道路の前記路肩に、前記路肩を照射する広角用ＬＥＤ照射器と、前記走行車線を照射する中角用ＬＥＤ照射器と、前記追い越し車線を照射する狭角用ＬＥＤ照射器を有し、前記広角用ＬＥＤ照射器、前記中角用ＬＥＤ照射器及び前記狭角用ＬＥＤ照射器による照射により、前記道路の平均路面輝度を０．５ｃｄ／ｍ 2 以上、前記走行車線と前記追い越し車線における総合均斉度を０．５５以上、グレアを１２５（ｃｄ）以下とする照射ユニットを一定の間隔を有して複数配置し、また同照射ユニットにおける中角用ＬＥＤ照射器と狭角用ＬＥＤ照射器は、前記道路の横断方向を基準に、車両の走行方向とは逆方向に角度を有して指向しているように構成してあるので、道路において所望の明るさを確保でき、また路面における均斉度は向上し、さらに視認性は高まる。
【００１０】
請求項２に記載のＬＥＤ低位置道路照明装置は、路肩、走行車線、及び、追い越し車線が並設された道路の前記路肩を照射する広角用ＬＥＤ照射器と、前記走行車線を照射する中角用ＬＥＤ照射器と、前記追い越し車線を照射する狭角用ＬＥＤ照射器とで照射ユニットを構成し、また同照射ユニットと電線路ユニットとを組み合わせて構成し、さらに組み合わせた照射ユニットと電線路ユニットを前記道路の路肩に順次配置して構成し、前記照射ユニットの前記広角用ＬＥＤ照射器、前記中角用ＬＥＤ照射器及び前記狭角用ＬＥＤ照射器による照射により、前記道路の平均路面輝度を０．５ｃｄ／ｍ 2 以上、前記走行車線と前記追い越し車線における総合均斉度を０．５５以上、グレアを１２５（ｃｄ）以下とし、また同照射ユニットにおける中角用ＬＥＤ照射器と、狭角用ＬＥＤ照射器は、前記道路の横断方向を基準に、車両の走行方向とは逆方向に角度を有して指向している。
【００１１】
請求項２に記載のＬＥＤ低位置道路照明装置によると、照射ユニットと電線路ユニットを道路の大きさと形状に合わせて、順次路肩の低位置に配置することにより、簡易に所望の明るさを確保することができ、また路面における均斉度は向上し、さらに視認性は高めることができる。
【００１２】
【発明の実施の形態】
以下本発明を図１乃至図６について説明する。
図１はＬＥＤ低位置道路照明方式の実施の形態を示すものである。図１は、広角用ＬＥＤ照射器と、中角用ＬＥＤ照射器と、狭角用ＬＥＤ照射器を有する照射ユニットを一定の間隔を有して道路の路肩に複数配置して構成した状態を示すものである。道路は例えば、走行車線１と、追越車線２と、路肩３を有している。４はＬＥＤ照射器であって、道路の走行方向と直交して路肩３に配置して構成してある。またＬＥＤ照射器４は例えば高さ１．１ｍ程度の高さに位置して構成してある。さらにＬＥＤ照射器は車両の運転者への視線誘導性を有して設けられている。
【００１３】
またＬＥＤ照射器４は、図４に示すように構成してある。図４はＬＥＤ基板１１にＬＥＤチップ１２を組み込み配置して構成してある。ＬＥＤチップ１２は例えば橙色９個と、緑色４個と、青色２個を図４に示すように配置して構成し、所望の色調を得ている。図４に示す実施例によるとＬＥＤ照射器から投射される光は白色系となる。図５は、図４に示すＬＥＤ基板１１にＬＥＤチップ１２を組み込み配置したものをＬＥＤ照射器に組み込み構成してある。
【００１４】
またＬＥＤ照射器は、図５に示すように、広角用ＬＥＤ照射器２１と、中角用ＬＥＤ照射器２２と、狭角用ＬＥＤ照射器２３を一組として照射ユニットを構成してある。また広角用ＬＥＤ照射器２１と、中角用ＬＥＤ照射器２２と、狭角用ＬＥＤ照射器２３の比率は、例えば広角用ＬＥＤ照射器１台に対して、中角用ＬＥＤ照射器１台、狭角用ＬＥＤ照射器５台で構成してある。
【００１５】
上記したＬＥＤ照射器は図１及び図２に示すように、取り付けて実施すると、所望の明るさを確保することができ、また路面における均斉度が向上し、さらに視認性を高めることができることが実験の結果確認されている。図１及び図２において、道路の走行車線１と、追越車線２は３．５ｍ、路肩３は１ｍの幅を有している。
またＬＥＤ照射器４は例えば高さ１．１ｍ程度の高さに位置して構成してある。そして、各ＬＥＤ照射器の比率は上記したように、広角用ＬＥＤ照射器１台、中角用ＬＥＤ照射器１台、狭角用ＬＥＤ照射器５台で構成してある。
また図２に示すように、広角用ＬＥＤ照射器は主に路肩を照射し、中角用ＬＥＤ照射器は主に走行車線を照射し、狭角用ＬＥＤ照射器は主に追越車線を照射するように構成してある。
そして、図１に示すように、中角用ＬＥＤ照射器と、狭角用ＬＥＤ照射器は、道路の横断方向を基準に、車両の走行方向とは逆方向に１０度乃至３０度の角度を有して連続配置して構成してある。
【００１６】
前記した条件で実験した結果、平均路面輝度は、０．５ｃｄ/ｍ2以上となり、走行車線と、追越車線における総合均斉度は０．５５以上、グレアは１２５(ｃｄ)以下となる。
この結果、夜間路面上に障害物が存在すると、車両の運転者は、早期に障害物を視認でき安全が維持される。
【００１７】
次にＬＥＤ低位置道路照明装置を図６について説明する。図６に示すように、ＬＥＤ照射器は、広角用ＬＥＤ照射器と、中角用ＬＥＤ照射器及び狭角用ＬＥＤ照射器を照射ユニット３１として構成してある。また照射ユニット３１は電線路ユニット３２と組み合わせて構成してある。また電線路ユニット３２の内部には主配線が取り込まれる。
そして同照射ユニットと電線路ユニットを順次路肩の低位置に配置して構成してある。
このようにすると、路肩の狭い道路やカーブしている道路でも電線路ユニット兼用の照射ユニット３１を容易に設置することができる。また故障した場合、故障箇所のみを交換すればよく、メンテナンス作業が容易となる。さらに狭い道路やカーブしている道路でも道路の大きさと形状に合わせて配置し、配光制御を容易に行うことができる。
【００１８】
上記した請求項１記載の本発明によると、道路において所望の明るさを確保することができ、また路面における均斉度は向上し、さらに視認性が高まる特別な効果がある。
【００１９】
上記した請求項２記載の本発明によると、照射ユニットと電線路ユニットを道路に合わせて、順次路肩の低位置に配置することにより、簡易に所望の明るさを確保することができ、路面における均斉度は向上し、さらに視認性は高めることができる特別な効果がある。
【図面の簡単な説明】
【図１】本発明のＬＥＤ低位置道路照明方式の平面図。
【図２】図１に示すＬＥＤ低位置道路照明方式の車両の走行方向からの正面図。
【図３】図１における照射ユニットの設置例図。
【図４】ＬＥＤ基板にＬＥＤチップを配置したときの正面図。
【図５】ＬＥＤを組み込んだ照射ユニットの正面図。
【図６】照射ユニットと電線路ユニットを込み合わせたときの側面図。[0001]
The present invention relates to improvements in LED low position road lighting systems and LED low position road lighting devices.
[0002]
[Prior art]
Conventionally, as a low position illumination of a road, for example, as disclosed in Japanese Patent No. 2830693, a light source is arranged at an end of a hollow pipe having a light transmission window to constitute an illumination device, and each illumination device is connected to a road. A road lighting apparatus is continuously arranged at a low position.
[0003]
[Problems to be solved by the invention]
By the way, according to the road illumination device described above, it is difficult to control light distribution on a road with a narrow shoulder or a curved road, and there is a disadvantage that desired brightness cannot be secured and the uniformity on the road surface is low.
[0004]
The present invention has been invented in view of the above points, and is an LED low-position road that can ensure desired brightness, improve uniformity on the road surface, and can further enhance the visibility and the effect of guiding the line of sight. An object of the present invention is to provide an illumination system and an LED low position road illumination device.
[0005]
[Means for Solving the Problems]
Hereinafter, the present invention will be described with respect to claims 1 and 2. LED lower position road lighting system according to claim 1, shoulder, the traffic lane, and, on the shoulder of the road passing lane is juxtaposed, and wide-angle LED illuminator for illuminating the road shoulder, the driving lane A medium-angle LED irradiator for irradiation and a narrow-angle LED irradiator for irradiating the overtaking lane, and irradiation by the wide-angle LED irradiator, the medium-angle LED irradiator, and the narrow-angle LED irradiator. The irradiation unit having an average road surface luminance of the road of 0.5 cd / m 2 or more, an overall uniformity of the driving lane and the overtaking lane of 0.55 or more, and a glare of 125 (cd) or less is set at regular intervals. has a plurality arranged, also medium-angle for LED illuminator and the narrow angle for LED illumination device in the irradiation unit, on the basis of the transverse direction of the road, the traveling direction of the vehicle at an angle in the opposite direction It is directed And wherein the door.
[0009]
According to LED low position road lighting system according to claim 1, wherein the above, shoulder, the traffic lane, and, on the shoulder of the road passing lane is juxtaposed, and wide-angle LED illuminator for irradiating the shoulder, the travel A medium-angle LED irradiator for irradiating a lane and a narrow-angle LED irradiator for irradiating the overtaking lane , the wide-angle LED irradiator, the medium-angle LED irradiator, and the narrow-angle LED irradiator The irradiation unit having an average road surface brightness of 0.5 cd / m 2 or more, an overall uniformity of the driving lane and the overtaking lane of 0.55 or more, and a glare of 125 (cd) or less is fixed by at a distance plurality placed, also medium-angle for LED illuminator and a narrow angle for LED illumination device in the irradiation unit is closed relative to the transverse direction of the road, the angle in a direction opposite to the running direction of the vehicle do it Because are configured to have countercurrent, in the road it can ensure a desired brightness, and uniformity in the road is improved and further visibility is enhanced.
[0010]
Angle in the LED low position road lighting device according to claim 2, which irradiates shoulder, the traffic lane, and a wide-angle LED illuminator that irradiates the shoulder of the road passing lane is arranged, the driving lane An irradiation unit is composed of the LED irradiator for use and the narrow-angle LED irradiator that irradiates the overtaking lane, and the irradiation unit and the electric line unit are combined. The combined irradiation unit and electric line unit was constructed by sequentially disposed shoulder of the road, the wide-angle LED illuminator of the illumination unit, the illumination by LED irradiator and the narrow angle for LED illuminator for the in corners, the average road surface brightness of the road 0.5 cd / m 2 or more, the traveling lane and overall uniformity ratio of 0.55 or more in the passing lane, the glare and 125 (cd) hereinafter, also put in the irradiation unit A medium angle for LED illuminator, the narrow angle for LED illuminator, based on the transverse direction of the road, are directed at an angle in a direction opposite to the running direction of the vehicle.
[0011]
According to the LED low position road illumination device according to claim 2 , the desired brightness can be easily secured by sequentially arranging the irradiation unit and the electric line unit in accordance with the size and shape of the road at the low position of the road shoulder. In addition, the uniformity on the road surface can be improved and the visibility can be further improved.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described below with reference to FIGS.
FIG. 1 shows an embodiment of an LED low position road illumination system. FIG. 1 shows a state in which a plurality of irradiation units each having a wide-angle LED irradiator, a medium-angle LED irradiator, and a narrow-angle LED irradiator are arranged on a road shoulder with a certain interval. Is. The road has, for example, a traveling lane 1, an overtaking lane 2, and a shoulder 3. Reference numeral 4 denotes an LED irradiator, which is arranged on the shoulder 3 so as to be orthogonal to the traveling direction of the road. The LED irradiator 4 is configured to be positioned at a height of, for example, about 1.1 m. Furthermore, the LED irradiator is provided with line-of-sight inductivity to the driver of the vehicle.
[0013]
The LED illumination device 4, are configured as shown in FIG. In FIG. 4, the LED chip 12 is incorporated and arranged on the LED substrate 11. The LED chip 12 is configured by arranging, for example, nine oranges, four greens, and two blues as shown in FIG. 4 to obtain a desired color tone. According to the embodiment shown in FIG. 4, the light projected from the LED irradiator is white. FIG. 5 shows a configuration in which the LED substrate 11 shown in FIG.
[0014]
As shown in FIG. 5, the LED irradiator is configured as an irradiation unit including a wide-angle LED irradiator 21, a medium-angle LED irradiator 22, and a narrow-angle LED irradiator 23. The ratio of the wide-angle LED irradiator 21, the medium-angle LED irradiator 22, and the narrow-angle LED irradiator 23 is, for example, one medium-angle LED irradiator with respect to one wide-angle LED irradiator, It consists of 5 LED irradiators for narrow angle.
[0015]
LED illuminator described above, as shown in FIGS. 1 and 2, when implemented attached, it is possible to ensure a desired brightness and improved uniformity in the road, that can further improve the visibility Has been confirmed as a result of the experiment. 1 and 2, the road lane 1 and the overtaking lane 2 have a width of 3.5 m, and the road shoulder 3 has a width of 1 m.
The LED irradiator 4 is configured to be positioned at a height of, for example, about 1.1 m. The ratio of each LED illuminator as described above, one for LED illuminator angle, one medium-angle for LED illuminator, are constituted by five narrow angle for LED illuminator.
As shown in FIG. 2, the wide-angle LED irradiator mainly irradiates the road shoulder, the middle-angle LED irradiator mainly irradiates the driving lane, and the narrow-angle LED irradiator mainly irradiates the overtaking lane. It is comprised so that it may do.
As shown in FIG. 1, the medium-angle LED irradiator and the narrow-angle LED irradiator have an angle of 10 degrees to 30 degrees in the direction opposite to the traveling direction of the vehicle with respect to the crossing direction of the road. And have a continuous arrangement.
[0016]
As a result of the experiment under the above-described conditions, the average road surface brightness is 0.5 cd / m 2 or more, the total uniformity in the traveling lane and the overtaking lane is 0.55 or more, and the glare is 125 (cd) or less.
As a result, if there is an obstacle on the road surface at night, the driver of the vehicle can visually recognize the obstacle at an early stage, and safety is maintained.
[0017]
Next, the LED low position road illumination device will be described with reference to FIG. As shown in FIG. 6, the LED irradiator includes a wide-angle LED irradiator, a medium-angle LED irradiator, and a narrow-angle LED irradiator as an irradiation unit 31. The irradiation unit 31 is configured in combination with the electric line unit 32. Further, the main wiring is taken into the electric wire unit 32.
The irradiation unit and the electric line unit are sequentially arranged at a low position on the shoulder.
In this way, it is possible to easily install the irradiation unit 31 that also serves as an electric wire unit on a road with a narrow shoulder or a curved road. In the case of a failure, only the failed part needs to be replaced, and the maintenance work is facilitated. Furthermore, even a narrow road or a curved road can be arranged according to the size and shape of the road, and light distribution control can be easily performed.
[0018]
According to the first aspect of the present invention, desired brightness can be ensured on the road, the uniformity on the road surface is improved, and the visibility is further enhanced.
[0019]
According to the present invention described in claim 2 , the desired brightness can be easily ensured by arranging the irradiation unit and the electric line unit in a low position on the shoulder of the road in accordance with the road. There is a special effect that the uniformity can be improved and the visibility can be further improved.
[Brief description of the drawings]
FIG. 1 is a plan view of an LED low position road illumination system according to the present invention.
FIG. 2 is a front view from the traveling direction of the vehicle of the LED low position road illumination system shown in FIG. 1;
3 is an installation example diagram of an irradiation unit in FIG. 1;
FIG. 4 is a front view when an LED chip is arranged on an LED substrate.
FIG. 5 is a front view of an irradiation unit incorporating an LED.
FIG. 6 is a side view when the irradiation unit and the electric line unit are combined.

Claims (2)

路肩、走行車線、及び、追い越し車線が並設された道路の前記路肩に、
前記路肩を照射する広角用ＬＥＤ照射器と、前記走行車線を照射する中角用ＬＥＤ照射器と、前記追い越し車線を照射する狭角用ＬＥＤ照射器を有し、前記広角用ＬＥＤ照射器、前記中角用ＬＥＤ照射器及び前記狭角用ＬＥＤ照射器による照射により、前記道路の平均路面輝度を０．５ｃｄ／ｍ 2 以上、前記走行車線と前記追い越し車線における総合均斉度を０．５５以上、グレアを１２５（ｃｄ）以下とする照射ユニットを一定の間隔を有して複数配置し、
また同照射ユニットにおける中角用ＬＥＤ照射器と狭角用ＬＥＤ照射器は、前記道路の横断方向を基準に、車両の走行方向とは逆方向に角度を有して指向している
ことを特徴とするＬＥＤ低位置道路照明方式。 Shoulder, the traffic lane, and, on the shoulder of the road passing lane is arranged,
A wide-angle LED irradiator that irradiates the road shoulder, an intermediate-angle LED irradiator that irradiates the traveling lane, and a narrow-angle LED irradiator that irradiates the overtaking lane , the wide-angle LED irradiator, By irradiation with the medium-angle LED irradiator and the narrow-angle LED irradiator, the average road surface brightness of the road is 0.5 cd / m 2 or more, and the overall uniformity in the driving lane and the overtaking lane is 0.55 or more, A plurality of irradiation units having a glare of 125 (cd) or less are arranged at regular intervals,
The medium angle for LED illuminator and the narrow angle for LED illumination device in the irradiation unit, characterized in that relative to the transverse direction of the road, are directed at an angle in a direction opposite to the running direction of the vehicle LED low position road lighting system. 路肩、走行車線、及び、追い越し車線が並設された道路の前記路肩を照射する広角用ＬＥＤ照射器と、前記走行車線を照射する中角用ＬＥＤ照射器と、前記追い越し車線を照射する狭角用ＬＥＤ照射器とで照射ユニットを構成し、
また同照射ユニットと電線路ユニットとを組み合わせて構成し、
さらに組み合わせた照射ユニットと電線路ユニットを前記道路の路肩に順次配置して構成し、
前記照射ユニットの前記広角用ＬＥＤ照射器、前記中角用ＬＥＤ照射器及び前記狭角用ＬＥＤ照射器による照射により、前記道路の平均路面輝度を０．５ｃｄ／ｍ 2 以上、前記走行車線と前記追い越し車線における総合均斉度を０．５５以上、グレアを１２５（ｃｄ）以下とし、
また同照射ユニットにおける中角用ＬＥＤ照射器と、狭角用ＬＥＤ照射器は、前記道路の横断方向を基準に、車両の走行方向とは逆方向に角度を有して指向している
ことを特徴とするＬＥＤ低位置道路照明装置。 Shoulder, the traffic lane, and a wide-angle LED illuminator that irradiates the shoulder of the road passing lane is juxtaposed, and medium-angle for LED illuminator for illuminating the traffic lane, narrow angle illuminating the overtaking lane An irradiation unit is configured with an LED irradiator for
In addition, the irradiation unit and the electric line unit are combined and configured.
The irradiation unit and the electric wire path unit that combines further constructed by sequentially disposed shoulder of the road,
By irradiation with the wide-angle LED irradiator, the medium-angle LED irradiator and the narrow-angle LED irradiator of the irradiation unit, the average road surface brightness of the road is 0.5 cd / m 2 or more, the travel lane and the The overall uniformity in the overtaking lane is 0.55 or more and the glare is 125 (cd) or less .
Also a medium angle for LED illumination device in the irradiation unit, the narrow angle for LED illuminator, based on the transverse direction of the road, that is directed at an angle in a direction opposite to the running direction of the vehicle LED low-position road lighting device.
JP2002282323A 2002-09-27 2002-09-27 LED low position illumination method and LED low position illumination device Expired - Fee Related JP4113754B2 (en)

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