JP5664916B2 - Lighting device - Google Patents
Lighting device Download PDFInfo
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- JP5664916B2 JP5664916B2 JP2011066190A JP2011066190A JP5664916B2 JP 5664916 B2 JP5664916 B2 JP 5664916B2 JP 2011066190 A JP2011066190 A JP 2011066190A JP 2011066190 A JP2011066190 A JP 2011066190A JP 5664916 B2 JP5664916 B2 JP 5664916B2
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- lens
- light
- concave
- fresnel lens
- lighting device
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- 238000005286 illumination Methods 0.000 claims description 6
- 230000000052 comparative effect Effects 0.000 description 11
- 239000000758 substrate Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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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
Description
本発明は、LED等を組み込んで街路灯として用いる照明装置に関する。 The present invention relates to an illumination device that incorporates an LED or the like and is used as a street lamp.
街路灯或いは街路灯に転用可能な照明装置として、特許文献1〜3に開示されるものが知られている。
特許文献1には、街路灯に用いる照明装置として、LED等の光源からの光をリフレクターを介して反射し、透明カバーを通して外部に照射する構造で、前記透明カバーにフレネル部を形成することで拡散させて均一な照明とすることが開示されている。
As a lighting device that can be diverted to a street light or a street light, those disclosed in Patent Documents 1 to 3 are known.
In Patent Document 1, as a lighting device used for a street lamp, light from a light source such as an LED is reflected through a reflector and irradiated to the outside through a transparent cover, and a Fresnel portion is formed in the transparent cover. It is disclosed that it is diffused to provide uniform illumination.
特許文献2には、道路の曲がり具合や凹凸などの状況に応じて照射ができるように、1つの街路灯に複数の照明具を取り付け、これら照明具の角度を調整可能とした構造が開示されており、この照明具にはフレネルレンズが組み込まれている。
特許文献3には街路灯などに用いられる照明器具として、LED等の光源からの光を光路制御微細構造を介して所定の角度に拡散せしめる構造が開示され、光路制御微細構造として、連続または不連続状の鋸歯状反射体あるいは透光体が挙げられている。
街路灯には用途別に種々のタイプがあり、各用途ごとに要求される特性が異なる。
例えば、高速道路用街路灯は1灯あたり、高さ15m、照射エリア7m×20m、平均照度10lx以上が要求され、テニスコート用街路灯(照明装置)は1灯あたり、高さ10m、照射エリア8m×10m、平均照度250lx以上が要求され工場内の街路灯は1灯あたり、高さ12m、照射エリア5m×5m、平均照度500lx以上が要求される。
また、目標とされる省エネ効果は、高速道路用街路灯では1灯/420wをLED100w以下、テニスコート用街路灯では1灯/1000wをLED280w以下、工場内の街路灯では1灯700wをLED300w以下まで低下させることを目標としている。
There are various types of street lamps depending on the application, and the required characteristics differ for each application.
For example, a highway street light is required to have a height of 15 m, an irradiation area of 7 m × 20 m, and an average illuminance of 10 lx or more. 8 m × 10 m and average illuminance of 250 lx or more are required, and street lights in the factory are required to have a height of 12 m, an irradiation area of 5 m × 5 m, and an average illuminance of 500 lx or more.
The target energy-saving effects are 1 / 420w for LED streetlights for highway street lights of 100w or less, 1 / 1000w for streetlights for tennis courts, LED280w or less, and 700w for streetlights in factories of 300w or less. The goal is to reduce it.
特許文献1〜3に開示される構成の照明装置によって、上述した街路灯に要求される性能を満たすには、大容量の光源を用いなければならず、省エネルギーを十分に達成することができない。 A large-capacity light source must be used to satisfy the performance required for the street lamps described above by the lighting devices having the configurations disclosed in Patent Documents 1 to 3, and energy saving cannot be sufficiently achieved.
上記課題を解決するため本発明は、ケース内に光源とレンズ群を組み込んだ街路灯として、前記レンズ群を光源からの光を集光する凸レンズと、この凸レンズから出射した光を所定の範囲に拡散させる凹レンズユニットで構成し、この凹レンズユニットは2枚の異なるフレネルレンズを重ねたものとした。 In order to solve the above-described problems, the present invention provides a convex lens that collects light from a light source and a light emitted from the convex lens in a predetermined range as a street light in which a light source and a lens group are incorporated in a case. It is composed of a concave lens unit that diffuses, and this concave lens unit is a stack of two different Fresnel lenses.
前記凹レンズユニットとしては、例えば同心円状フレネルレンズとリニアフレネルレンズとを組み合わせたものが好ましい。 As the concave lens unit, for example, a combination of a concentric Fresnel lens and a linear Fresnel lens is preferable.
本発明に係る街路灯によれば、消費電力を少なくして所定範囲における照度が十分で均一な街路灯を提供することができる。 According to the street light according to the present invention, it is possible to provide a street light with sufficient and uniform illuminance in a predetermined range by reducing power consumption.
以下に本発明の好適な実施例を添付図面に基づいて説明する。図1に示すように、照明装置は筒状ケース1内に凹面状反射体2を配置し、この凹面状反射体2の中心部にLEDチップ3を取り付けた基板4を固定している。
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. As shown in FIG. 1, the illuminating device has a
前記基板4の背面側にはケース1内の高温空気を排除する多孔板5を取り付け、凹面状反射体2の開口部には凸レンズ6を取り付け、更にケース1の前面開口には凹レンズユニット7を取り付けている。
A
凹レンズユニット7は2枚の異なるフレネルレンズを重ねて構成され、本実施例の場合は、内側(凸レンズ6側)に図2に示すリニアフレネルレンズ7aを配置し、外側に同心円状フレネルレンズ7bを配置している。このように組み合わせることで、最良の結果が得られた。
The concave lens unit 7 is formed by stacking two different Fresnel lenses. In this embodiment, the
図4(a)及び(b)は後述する比較例I、II-1及びII-2の構成を説明した図であり、(a)に示す比較例Iは図1に示した照明装置から凹レンズユニットを外した構造で、比較例II-1及びII-2は(b)に示すように、凹レンズユニットとしてリニアフレネルレンズ7aのみを取り付けている。
比較例II-1及びII-2との相違は、リニアフレネルレンズ7aの向きであり、比較例II-1にあってはレンズ面を内側とし、比較例II-2にあってはレンズ面を外側としている。
4 (a) and 4 (b) are diagrams illustrating the configurations of Comparative Examples I, II-1 and II-2, which will be described later, and Comparative Example I shown in FIG. 4 (a) is a concave lens from the lighting device shown in FIG. With the structure in which the unit is removed, Comparative Examples II-1 and II-2 have only a
The difference from Comparative Examples II-1 and II-2 is the orientation of the linear Fresnel
更に、リニアフレネルレンズ7aを外側に同心円状フレネルレンズ7bを内側に配置すると、縦と横の広がりが不均一になるため、リニアフレネルレンズ7aを内側に同心円状フレネルレンズ7bを外側に配置するのが好ましい。
Further, when the linear Fresnel
図5は照明装置から5m離れた位置における照明領域の大きさ(横cm、縦cm)と、中心点(P1)及び周囲点(P2〜P5)の輝度を、本発明に係る照明装置と比較例1〜3とで比較したものである。
FIG. 5 compares the size of the illumination area (horizontal cm, vertical cm) at a
図5から明らかなように、比較例Iは直線集光の点で不利があり、比較II-1は配光分布の均一点で不利があり、比較例II-2は配光面積(長方形)の点で不利がある。
一方本発明に係る照明装置は上記の不利がなく、街路灯に要求される特性を全て具備している。
As is clear from FIG. 5, Comparative Example I is disadvantageous in terms of linear light collection, Comparative II-1 is disadvantageous in terms of uniform light distribution, and Comparative Example II-2 is light distribution area (rectangular) There is a disadvantage in terms of.
On the other hand, the lighting device according to the present invention does not have the above disadvantages and has all the characteristics required for street lamps.
本発明に係る照明装置は、高速道路や一般道に限らず、公園など設置場所は任意である。 The lighting device according to the present invention is not limited to a highway or a general road, and an installation place such as a park is arbitrary.
1…ケース、2…凹面状反射体、3…LEDチップ、4…基板、5…多孔板、6…凸レンズ、7…凹レンズユニット、7a…リニアフレネルレンズ、7b…同心円状フレネルレンズ。 DESCRIPTION OF SYMBOLS 1 ... Case, 2 ... Concave-shaped reflector, 3 ... LED chip, 4 ... Board | substrate, 5 ... Perforated plate, 6 ... Convex lens, 7 ... Concave lens unit, 7a ... Linear Fresnel lens, 7b ... Concentric Fresnel lens.
Claims (2)
2. The illumination device according to claim 1, wherein the concave lens unit is a combination of a concentric Fresnel lens and a linear Fresnel lens.
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JP2011066190A JP5664916B2 (en) | 2011-03-24 | 2011-03-24 | Lighting device |
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JP2011066190A JP5664916B2 (en) | 2011-03-24 | 2011-03-24 | Lighting device |
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JP2012204074A JP2012204074A (en) | 2012-10-22 |
JP5664916B2 true JP5664916B2 (en) | 2015-02-04 |
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CN103542307A (en) * | 2013-10-31 | 2014-01-29 | 江苏奥雷光电有限公司 | Video monitoring supplementary lighting LED (Light Emitting Diode) module |
JP7150216B1 (en) * | 2021-06-30 | 2022-10-07 | 京セラ株式会社 | lighting equipment |
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US9029A (en) * | 1852-06-15 | Saddle | ||
JPS61103132A (en) * | 1984-10-26 | 1986-05-21 | Olympus Optical Co Ltd | Strobe device with liquid-crystal lens |
US5128848A (en) * | 1989-03-31 | 1992-07-07 | W.C. Heraeus Gmbh | Operating light |
JPH086326Y2 (en) * | 1989-04-10 | 1996-02-21 | 株式会社小糸製作所 | Vehicle lighting |
WO2006129570A1 (en) * | 2005-06-01 | 2006-12-07 | Ccs Inc. | Light irradiation device |
JP2010146937A (en) * | 2008-12-22 | 2010-07-01 | Olympus Corp | Illumination optical system, and generation method for illumination light |
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