JP2002042523A - Light irradiation device - Google Patents
Light irradiation deviceInfo
- Publication number
- JP2002042523A JP2002042523A JP2000229665A JP2000229665A JP2002042523A JP 2002042523 A JP2002042523 A JP 2002042523A JP 2000229665 A JP2000229665 A JP 2000229665A JP 2000229665 A JP2000229665 A JP 2000229665A JP 2002042523 A JP2002042523 A JP 2002042523A
- Authority
- JP
- Japan
- Prior art keywords
- light
- lens
- thin
- reflecting mirror
- led
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
- F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
-
- 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
- F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
- F21W2111/02—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00 for roads, paths or the like
-
- 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]
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Road Signs Or Road Markings (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、道路のセンターラ
イン、交差点、横断歩道の路面等に設置され、誘導や警
告のための光を発する光照射装置、特に自発光道路鋲に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light emitting device which is installed on a center line of a road, an intersection, a road surface of a crosswalk, etc. and emits light for guidance and warning, and more particularly to a self-luminous road tack.
【０００２】[0002]
【従来の技術】この種の光照射装置は、発光ダイオード
（ＬＥＤ）とその駆動回路（電源回路）を備え、夜間に
光を発することにより車両の運転者や歩行者に対して警
告や誘導を行う目的で設置される。通常は道路のセンタ
ーライン、交差点の中央部、横断歩道等の路面に設置さ
れ、路面からの仰角が比較的小さい範囲に光を発する。2. Description of the Related Art A light irradiating apparatus of this type includes a light emitting diode (LED) and a driving circuit (power supply circuit) thereof, and emits light at night to warn or guide a driver or a pedestrian of a vehicle. It is installed for the purpose of performing. It is usually installed on the road surface, such as the center line of a road, the center of an intersection, or a pedestrian crossing, and emits light in a range where the elevation angle from the road surface is relatively small.
【０００３】その他、トンネル内の路面や壁面に設置し
てトンネルの湾曲形状や車線幅を明示する目的で使用さ
れる。また、地下街、公共スペースに設置して夜間の目
印や非常時の避難誘導サインとして使用される。In addition, it is used on a road surface or a wall surface in a tunnel for the purpose of specifying the curved shape and lane width of the tunnel. It is installed in underground malls and public spaces, and is used as a landmark at night or as an emergency evacuation guidance sign.
【０００４】図１５は、従来の光照射装置である自発光
道路鋲の概略構造を示す側面視の断面図である。路面１
０１から断面台形状のケーシング１０２が突出し、その
両側の傾斜面１０２ａに発光窓が所定のピッチで設けら
れている。各発光窓の内側には、基板１０４に実装され
たＬＥＤ１０３が配設されている。これらのＬＥＤ１０
３は駆動回路（図示は省略）によって駆動され、所定の
光を発する。この光は、ケーシング１０２の傾斜面１０
２ａに設けられた発光窓から外に出射し、歩行者や車両
の運転者によって視認される。FIG. 15 is a cross-sectional side view showing a schematic structure of a self-luminous road tack as a conventional light irradiation device. Road surface 1
01, a casing 102 having a trapezoidal cross section protrudes, and light emitting windows are provided at a predetermined pitch on inclined surfaces 102a on both sides thereof. The LEDs 103 mounted on the substrate 104 are arranged inside each light emitting window. These LEDs 10
Reference numeral 3 is driven by a drive circuit (not shown) and emits predetermined light. This light is applied to the inclined surface 10 of the casing 102.
The light exits from the light emitting window provided in 2a and is visually recognized by a pedestrian or a vehicle driver.
【０００５】[0005]
【発明が解決しようとする課題】上記の従来の光照射装
置（自発光道路鋲）の欠点の一つとして、その構造上、
路面１０１からの突出高さが高くなり、設置場所によっ
ては歩行者や車両にとって障害となることがある。ちな
みに、従来の自発光道路鋲（ケーシング１０２）の突出
高さは２０〜３０ｍｍであった。One of the drawbacks of the above-mentioned conventional light irradiation device (self-luminous road stud) is that its structure is
The projecting height from the road surface 101 increases, and depending on the installation location, it may be an obstacle for pedestrians and vehicles. Incidentally, the projecting height of the conventional self-luminous road stud (casing 102) was 20 to 30 mm.
【０００６】また、比較的小さいＬＥＤ１０３から発し
た光がそのままケーシング１０２の傾斜面１０２ａの発
光窓から出射するので、光の出射断面が小さく、視認性
が悪いといった問題もあった。Further, since the light emitted from the relatively small LED 103 is directly emitted from the light emitting window of the inclined surface 102a of the casing 102, there is a problem that the light emission cross section is small and visibility is poor.
【０００７】本発明は、上記のような従来の課題に鑑
み、薄型で、かつ、光の出射断面（発光面積）を大きく
することが可能な光照射装置を提供することを目的とす
る。The present invention has been made in view of the above-mentioned conventional problems, and has as its object to provide a light irradiating apparatus which is thin and can increase the light emission cross section (light emitting area).
【０００８】[0008]
【課題を解決するための手段】本発明による光照射装置
は、図１に示すように、放物面の一部を切り出した形状
の反射面１１ａを有する反射鏡１１と、前記放物面の焦
点又はその近傍に配置されたＬＥＤ光源１２と、前記反
射面１１ａと前記ＬＥＤ光源１２との間に配置され、前
記反射面１１ａの略全体へ照射させるレンズ１３とを備
えたことを特徴とする。As shown in FIG. 1, a light irradiating apparatus according to the present invention comprises a reflecting mirror 11 having a reflecting surface 11a formed by cutting out a part of a paraboloid, An LED light source 12 disposed at or near the focal point, and a lens 13 disposed between the reflection surface 11a and the LED light source 12 and irradiating substantially the entire reflection surface 11a. .
【０００９】この構成によれば、ＬＥＤ光源１２から発
した光はレンズ１３で制御され、反射面１１ａの略全体
で反射して略平行光になる。つまり、光が有効利用され
て出射断面（発光面積）を大きくすることができる。According to this configuration, the light emitted from the LED light source 12 is controlled by the lens 13 and is reflected by substantially the entire reflecting surface 11a to become substantially parallel light. That is, the light is effectively used, and the emission cross section (light emission area) can be increased.
【００１０】具体的な第１の構成として、図２に示すよ
うに、前記反射鏡１１は断面放物線状の反射面１１ａを
有する薄型反射鏡であり、前記ＬＥＤ光源１２は狭角配
光型ＬＥＤであり、前記レンズ１３はシリンドリカル凹
レンズであり、前記薄型反射鏡１１の厚み方向（Ｚ軸方
向）と前記シリンドリカル凹レンズ１３の凹面軸方向
（Ａ）とが一致する（いずれもＺ方向）。As a specific first configuration, as shown in FIG. 2, the reflecting mirror 11 is a thin reflecting mirror having a reflecting surface 11a having a parabolic cross section, and the LED light source 12 is a narrow-angle light distribution type LED. The lens 13 is a cylindrical concave lens, and the thickness direction (Z-axis direction) of the thin reflecting mirror 11 and the concave axis direction (A) of the cylindrical concave lens 13 match (all in the Z direction).
【００１１】この構成によれば、狭角配光型ＬＥＤ１２
から出た光はＺ方向では広がらないが、ＸＹ平面の方向
では広げられて、反射面１１ａの略全体で反射して略平
行光になる。つまり、薄型反射鏡１１の厚み方向（Ｚ軸
方向）で光の拡散損失を抑えながら、ＸＹ平面の方向で
出射断面（発光面積）を大きくすることができる。According to this configuration, the narrow-angle light distribution type LED 12
Although the light emitted from does not spread in the Z direction, it is spread in the direction of the XY plane, and is reflected by substantially the entire reflecting surface 11a to become substantially parallel light. That is, it is possible to increase the emission cross section (light emission area) in the direction of the XY plane while suppressing light diffusion loss in the thickness direction (Z-axis direction) of the thin reflecting mirror 11.
【００１２】具体的な第２の構成として、図３に示すよ
うに、前記反射鏡１１は断面放物線状の反射面１１ａを
有する薄型反射鏡であり、前記ＬＥＤ光源１２は広角配
光型ＬＥＤであり、前記レンズ１３はシリンドリカル凸
レンズであり、前記薄型反射鏡１１の厚み方向（Ｚ軸方
向）と前記シリンドリカル凸レンズ１３の凸面軸方向
（ＡすなわちＸＹ平面の方向）とが直交する。As a specific second configuration, as shown in FIG. 3, the reflecting mirror 11 is a thin reflecting mirror having a reflecting surface 11a having a parabolic cross section, and the LED light source 12 is a wide-angle light distribution type LED. The lens 13 is a cylindrical convex lens, and the thickness direction (Z-axis direction) of the thin reflecting mirror 11 and the convex axial direction (A, that is, the direction of the XY plane) of the cylindrical convex lens 13 are orthogonal to each other.
【００１３】この構成によれば、広角配光型ＬＥＤ１２
から出た光は、ＸＹ平面の方向ではそのまま進み反射面
１１ａの略全体で反射して略平行光になる。Ｚ方向では
シリンドリカル凸レンズ１３によって集光される。した
がって、この場合も、薄型反射鏡１１の厚み方向（Ｚ軸
方向）で光の拡散損失を抑えながら、ＸＹ平面の方向で
出射断面（発光面積）を大きくすることができる。According to this configuration, the wide-angle light distribution type LED 12
The light that has exited in the direction of the XY plane proceeds as it is, and is reflected by substantially the entire reflecting surface 11a to become substantially parallel light. In the Z direction, the light is collected by the cylindrical convex lens 13. Therefore, also in this case, it is possible to increase the emission cross section (light emission area) in the direction of the XY plane while suppressing the light diffusion loss in the thickness direction (Z-axis direction) of the thin reflecting mirror 11.
【００１４】具体的な第３の構成として、図４に示すよ
うに、断面放物線状の反射面１１ａを有する薄型反射鏡
１１と、前記放物線の焦点又はその近傍で前記薄型反射
鏡１１の厚み方向の略中央部に配置されたＬＥＤ光源１
２とを備え、前記ＬＥＤ光源１２のレンズが、前記薄型
反射鏡１１の厚み方向（Ｚ軸方向）で狭角配光特性を有
し、前記薄型反射鏡１１の厚み方向と直角な方向（ＸＹ
平面の方向）で広角配光特性を有する。このようなＬＥ
Ｄレンズ形状はアナモフィックレンズと呼称され、Ｚ軸
方向の断面形状、ＸＹ平面方向の断面形状は異なった形
状であり、それぞれ球面もしくは非球面レンズ断面形状
を有する。この場合も、薄型反射鏡１１の厚み方向（Ｚ
軸方向）で光の拡散損失を抑えながら、ＸＹ平面の方向
で出射断面（発光面積）を大きくすることができる。As a specific third configuration, as shown in FIG. 4, a thin reflecting mirror 11 having a reflecting surface 11a having a parabolic cross section and a thickness direction of the thin reflecting mirror 11 at or near the focal point of the parabola. LED light source 1 arranged substantially at the center
Wherein the lens of the LED light source 12 has a narrow-angle light distribution characteristic in the thickness direction (Z-axis direction) of the thin reflecting mirror 11 and a direction (XY) perpendicular to the thickness direction of the thin reflecting mirror 11.
(In the direction of a plane). LE like this
The D lens shape is called an anamorphic lens, and the cross-sectional shape in the Z-axis direction and the cross-sectional shape in the XY plane direction are different shapes, each having a spherical or aspherical lens cross-sectional shape. Also in this case, the thickness direction (Z
The emission cross section (light emission area) can be increased in the direction of the XY plane while suppressing the diffusion loss of light in the (axial direction).
【００１５】上記の各構成を有する光照射装置は、道路
のセンターライン、交差点、横断歩道等の路面に設置さ
れる自発光道路鋲に使用されることが好ましい。The light irradiating device having each of the above structures is preferably used for a self-luminous road stud installed on a road surface such as a center line of a road, an intersection, or a crosswalk.
【００１６】[0016]
【発明の実施の形態】以下、図面を参照しながら本発明
の実施形態を説明する。図５は本発明の実施形態に係る
光照射装置の分解図である。また、図６（ａ）及び
（ｂ）は、本発明の第１の実施形態に係る光照射装置の
平面視及び側面視での内部構造を示す図である。なお、
本実施形態及び他の実施形態で参照する図面において、
同じ機能を有する構成要素には同じ番号を付している。Embodiments of the present invention will be described below with reference to the drawings. FIG. 5 is an exploded view of the light irradiation device according to the embodiment of the present invention. FIGS. 6A and 6B are views showing the internal structure of the light irradiation device according to the first embodiment of the present invention in plan view and side view. In addition,
In the drawings referred to in the present embodiment and other embodiments,
Components having the same function are given the same numbers.
【００１７】断面放物線状の反射面１１ａを有する薄型
反射鏡１１が上板１４と下板１５とに挟まれ、反射面１
１ａの放物線の焦点で薄型反射鏡１１の厚み方向の中央
部にＬＥＤ１２が配置されている。ＬＥＤ１２は光を発
する範囲の角度（出射角度範囲）が狭い狭角配光タイプ
であり、その光出射方向が反射面１１ａの略中央部に向
けられている。A thin reflecting mirror 11 having a reflecting surface 11a having a parabolic cross section is sandwiched between an upper plate 14 and a lower plate 15, and the reflecting surface 1
The LED 12 is arranged at the center of the thickness direction of the thin reflecting mirror 11 at the focal point of the parabola 1a. The LED 12 is a narrow-angle light distribution type in which the angle of light emission range (emission angle range) is narrow, and the light emission direction is directed to a substantially central portion of the reflection surface 11a.
【００１８】ＬＥＤ１２の前方（光出射方向）に近接し
てシリンドリカル凹レンズ１３が配置されている。この
シリンドリカル凹レンズ１３は、その凹面軸方向が薄型
反射鏡１１の厚み方向と一致するように配置されてい
る。つまり、ＬＥＤ１２から発した光は、薄型反射鏡１
１の厚み方向（Ｚ軸方向）ではシリンドリカル凹レンズ
１３を通過してもほとんど屈折作用を受けないが、厚み
方向に垂直な方向（ＸＹ平面）ではシリンドリカル凹レ
ンズ１３によって広げられる。その結果、反射面１１ａ
の略全体で反射してＸ方向に幅広の平行光線となってＹ
方向に出射する。つまり、Ｚ軸方向では拡散による漏れ
損失を抑えながら、Ｘ方向の光出射断面が大きく視認性
の高い光照射装置が得られる。A cylindrical concave lens 13 is arranged in front of the LED 12 (in the light emission direction). The cylindrical concave lens 13 is arranged such that the concave axis direction coincides with the thickness direction of the thin reflecting mirror 11. That is, the light emitted from the LED 12 is reflected by the thin reflecting mirror 1.
In the thickness direction 1 (Z-axis direction), even though the light passes through the cylindrical concave lens 13, there is almost no refraction effect, but in the direction perpendicular to the thickness direction (XY plane), it is expanded by the cylindrical concave lens 13. As a result, the reflection surface 11a
Is reflected by substantially the entire area of the light beam and becomes a wide parallel light beam in the X direction.
Emit in the direction. That is, it is possible to obtain a light irradiating device having a large light emitting section in the X direction and high visibility while suppressing leakage loss due to diffusion in the Z axis direction.
【００１９】図７は、本実施形態の一実施例における光
照射装置の外形寸法を示している。また、図８は、薄型
反射鏡１１の反射面１１ａの断面形状である放物線のパ
ラメータを示している。また、図９はシリンドリカル凹
レンズ１３の外形寸法及びＬＥＤ１２との距離を示して
いる。FIG. 7 shows the external dimensions of the light irradiation device in one example of this embodiment. FIG. 8 shows parameters of a parabola which is a cross-sectional shape of the reflecting surface 11a of the thin reflecting mirror 11. FIG. 9 shows the external dimensions of the cylindrical concave lens 13 and the distance from the LED 12.
【００２０】図１０（ａ）及び（ｂ）は、本発明の第２
の実施形態に係る光照射装置の平面視及び側面視での内
部構造を示す図である。本実施形態の光照射装置は、Ｌ
ＥＤ１２が、光の出射角度範囲が広い広角配光タイプで
あり、レンズ１３がシリンドリカル凸レンズである点が
第１の実施形態と異なっている。また、このシリンドリ
カル凸レンズの凸面軸方向（ＸＹ平面の方向）は、薄型
反射鏡１１の厚み方向（Ｚ軸方向）と直交している。FIGS. 10A and 10B show a second embodiment of the present invention.
It is a figure which shows the internal structure in planar view and side view of the light irradiation apparatus which concerns on embodiment. The light irradiation device according to the present embodiment has L
The ED 12 is different from the first embodiment in that the ED 12 is a wide-angle light distribution type having a wide light emission angle range and the lens 13 is a cylindrical convex lens. The convex axis direction (direction of the XY plane) of the cylindrical convex lens is orthogonal to the thickness direction (Z-axis direction) of the thin reflecting mirror 11.
【００２１】したがって、ＬＥＤ１２から発した光は、
薄型反射鏡１１の厚み方向（Ｚ軸方向）ではシリンドリ
カル凸レンズ１３によって集められ、厚み方向に垂直な
方向（ＸＹ平面）ではシリンドリカル凸レンズ１３によ
って影響を受けることなく広角のまま薄型反射鏡１１の
反射面１１ａに達する。この結果、反射面１１ａの略全
体で反射してＸ方向に幅広の平行光線となってＹ方向に
出射する。つまり、第１の実施形態と同様に、Ｚ軸方向
では拡散による漏れ損失を抑えながら、Ｘ方向の光出射
断面が大きく視認性の高い光照射装置が得られる。Therefore, the light emitted from the LED 12 is
In the thickness direction (Z-axis direction) of the thin reflecting mirror 11, the light is collected by the cylindrical convex lens 13, and in the direction perpendicular to the thickness direction (XY plane), the reflection surface of the thin reflecting mirror 11 remains wide and unaffected by the cylindrical convex lens 13. Reaches 11a. As a result, the light is reflected by substantially the entire reflecting surface 11a, becomes parallel light rays wide in the X direction, and is emitted in the Y direction. That is, similarly to the first embodiment, a light irradiation device having a large light emission cross section in the X direction and high visibility can be obtained while suppressing leakage loss due to diffusion in the Z axis direction.
【００２２】図１１は、本実施形態の一実施例における
シリンドリカル凸レンズ１３の外形寸法とＬＥＤ１２と
の距離を示している。光照射装置の外形寸法と、薄型反
射鏡１１の反射面１１ａの放物線のパラメータについて
は、第１の実施形態と同じであり、図７及び図８に示し
た通りである。FIG. 11 shows the distance between the external dimensions of the cylindrical convex lens 13 and the LED 12 in one example of this embodiment. The outer dimensions of the light irradiation device and the parameters of the parabola of the reflecting surface 11a of the thin reflecting mirror 11 are the same as those in the first embodiment, and are as shown in FIGS.
【００２３】図１２（ａ）及び（ｂ）は、本発明の第３
の実施形態に係る光照射装置の平面視及び側面視での内
部構造を示す図である。本実施形態の光照射装置は、Ｌ
ＥＤ１２が、ＸＹ平面とＸＺ平面とで異なる配光特性を
有するアナモフィックレンズを有する点が既述の実施形
態と異なる。つまり、図１３に示すように、ＸＹ平面で
は広角配光特性を有し、ＸＺ平面では狭角配光特性を有
する。これにより、既述の実施形態で使用したシリンド
リカルレンズ１３は不要となる。FIGS. 12A and 12B show a third embodiment of the present invention.
It is a figure which shows the internal structure in planar view and side view of the light irradiation apparatus which concerns on embodiment. The light irradiation device according to the present embodiment has L
The point that the ED 12 has an anamorphic lens having different light distribution characteristics between the XY plane and the XZ plane is different from the above-described embodiment. That is, as shown in FIG. 13, the XY plane has a wide-angle light distribution characteristic, and the XZ plane has a narrow-angle light distribution characteristic. Thereby, the cylindrical lens 13 used in the above-described embodiment becomes unnecessary.
【００２４】図１４は、一実施例で使用したＬＥＤ１２
のアナモフィックレンズの形状を示す図である。アナモ
フィックレンズは、ＸＹ平面での縦断面と、ＸＺ平面で
の縦断面のレンズ形状が異なる。ここでは、ＸＹ平面で
の縦断面のＲが大きく、ＸＺ平面での縦断面のＲは小さ
い。これにより、シリンドリカルレンズを別途用いるこ
となく、Ｚ方向に狭角、ＸＹ平面で広角の配光特性を得
ることができる。その結果、既述の実施形態と同様に、
Ｚ軸方向では拡散による漏れ損失を抑えながら、Ｘ方向
の光出射断面が大きく視認性の高い光照射装置が得られ
る。FIG. 14 shows the LED 12 used in one embodiment.
FIG. 3 is a diagram showing the shape of the anamorphic lens of FIG. The anamorphic lens has different lens shapes in the vertical section on the XY plane and the vertical section on the XZ plane. Here, R in the vertical section on the XY plane is large, and R in the vertical section on the XZ plane is small. This makes it possible to obtain a narrow-angle light distribution characteristic in the Z direction and a wide-angle light distribution characteristic in the XY plane without using a separate cylindrical lens. As a result, similar to the above-described embodiment,
In the Z-axis direction, a light irradiation device having a large light emission cross section in the X direction and high visibility can be obtained while suppressing leakage loss due to diffusion.
【００２５】以上、種々の実施形態によって本発明の光
照射装置を説明した。しかしながら、本発明は上記の実
施形態に限らず、他の形態で実施してもよい。As described above, the light irradiation device of the present invention has been described according to various embodiments. However, the present invention is not limited to the above embodiment, and may be embodied in other forms.
【００２６】[0026]
【発明の効果】以上に説明したように本発明の光照射装
置によれば、Ｚ軸方向に薄型で拡散による漏れ損失を抑
えながら、Ｘ方向の光出射断面が大きく視認性の高い平
行光をＹ方向に出射することができる。As described above, according to the light irradiation apparatus of the present invention, while being thin in the Z-axis direction and suppressing leakage loss due to diffusion, parallel light having a large cross section in the X direction and high visibility can be obtained. Light can be emitted in the Y direction.
【図１】本発明の光照射装置の構成を説明するための斜
視図である。FIG. 1 is a perspective view for explaining a configuration of a light irradiation device of the present invention.
【図２】本発明の光照射装置の第１の具体構成を説明す
るための側面図である。FIG. 2 is a side view for explaining a first specific configuration of the light irradiation device of the present invention.
【図３】本発明の光照射装置の第２の具体構成を説明す
るための側面図である。FIG. 3 is a side view for explaining a second specific configuration of the light irradiation device of the present invention.
【図４】本発明の光照射装置の第３の具体構成を説明す
るための側面図である。FIG. 4 is a side view for explaining a third specific configuration of the light irradiation device of the present invention.
【図５】本発明の実施形態に係る光照射装置の分解図で
ある。FIG. 5 is an exploded view of the light irradiation device according to the embodiment of the present invention.
【図６】本発明の第１の実施形態に係る光照射装置の平
面視及び側面視での内部構造を示す図である。FIG. 6 is a diagram showing an internal structure of the light irradiation device according to the first embodiment of the present invention in a plan view and a side view.
【図７】一実施例における光照射装置の外形寸法を示す
図である。FIG. 7 is a diagram showing external dimensions of a light irradiation device in one embodiment.
【図８】薄型反射鏡の反射面の断面形状である放物線の
パラメータを示す図である。FIG. 8 is a diagram showing parameters of a parabola which is a cross-sectional shape of a reflection surface of a thin reflecting mirror.
【図９】シリンドリカル凹レンズの外形寸法とＬＥＤと
の距離を示す図である。FIG. 9 is a diagram showing an outer dimension of a cylindrical concave lens and a distance from an LED.
【図１０】本発明の第２の実施形態に係る光照射装置の
平面視及び側面視での内部構造を示す図である。FIG. 10 is a diagram showing an internal structure of a light irradiation device according to a second embodiment of the present invention in plan view and side view.
【図１１】一実施例におけるシリンドリカル凸レンズの
外形寸法とＬＥＤとの距離を示す図である。FIG. 11 is a diagram showing an outer dimension of a cylindrical convex lens and a distance from an LED in one embodiment.
【図１２】本発明の第３の実施形態に係る光照射装置の
平面視及び側面視での内部構造を示す図である。FIG. 12 is a diagram showing an internal structure of a light irradiation device according to a third embodiment of the present invention in plan view and side view.
【図１３】ＬＥＤの配光特性を示す図である。FIG. 13 is a diagram showing light distribution characteristics of an LED.
【図１４】一実施例で使用したＬＥＤのアナモフィック
レンズの形状を示す図である。FIG. 14 is a diagram showing a shape of an anamorphic lens of an LED used in one example.
【図１５】従来の光照射装置である自発光道路鋲の概略
構造を示す側面視の断面図である。FIG. 15 is a side view sectional view showing a schematic structure of a self-luminous road tack as a conventional light irradiation device.
１１ 反射鏡 １１ａ 反射面 １２ ＬＥＤ光源 １３ レンズ Ｙ 光出射方向 Ｚ 薄型反射鏡の厚み方向 Reference Signs List 11 Reflecting mirror 11a Reflecting surface 12 LED light source 13 Lens Y Light emitting direction Z Thickness direction of thin reflecting mirror
Claims (5)
を有する反射鏡と、前記放物面の焦点又はその近傍に配
置されたＬＥＤ光源と、前記反射面と前記ＬＥＤ光源と
の間に配置され、ＬＥＤ光源から発した光を前記反射面
の略全体へ照射させるレンズとを備えたことを特徴とす
る光照射装置。1. A reflecting mirror having a reflecting surface having a shape obtained by cutting out a part of a paraboloid, an LED light source disposed at or near a focal point of the paraboloid, and the reflecting surface and the LED light source. A light irradiating device comprising: a lens disposed between the lenses to irradiate substantially the entire reflecting surface with light emitted from the LED light source.
する薄型反射鏡であり、前記ＬＥＤ光源は狭角配光型Ｌ
ＥＤであり、前記レンズはシリンドリカル凹レンズであ
り、前記薄型反射鏡の厚み方向と前記シリンドリカル凹
レンズの凹面軸方向とが一致することを特徴とする請求
項１記載の光照射装置。2. The reflector according to claim 1, wherein the reflector is a thin reflector having a parabolic reflective surface, and the LED light source is a narrow-angle light distribution type L.
2. The light irradiation device according to claim 1, wherein the light emitting device is an ED, wherein the lens is a cylindrical concave lens, and a thickness direction of the thin reflecting mirror coincides with a concave axial direction of the cylindrical concave lens.
する薄型反射鏡であり、前記ＬＥＤ光源は広角配光型Ｌ
ＥＤであり、前記レンズはシリンドリカル凸レンズであ
り、前記薄型反射鏡の厚み方向と前記シリンドリカル凸
レンズの凸面軸方向とが直交することを特徴とする請求
項１記載の光照射装置。3. The reflecting mirror is a thin reflecting mirror having a parabolic reflecting surface in cross section, and the LED light source is a wide-angle light distribution type L.
2. The light irradiation device according to claim 1, wherein the lens is an ED, and the lens is a cylindrical convex lens, and a thickness direction of the thin reflecting mirror is orthogonal to a convex axis direction of the cylindrical convex lens.
鏡と、前記放物線の焦点又はその近傍で前記薄型反射鏡
の厚み方向の略中央部に配置されたＬＥＤ光源とを備
え、前記ＬＥＤ光源のレンズが、前記薄型反射鏡の厚み
方向で狭角配光特性を有し、前記薄型反射鏡の厚み方向
と直角な方向で広角配光特性を有することを特徴とする
光照射装置。4. An LED light source comprising: a thin reflecting mirror having a reflecting surface having a parabolic cross section; and an LED light source disposed at or near a focal point of the parabola at a substantially central portion in a thickness direction of the thin reflecting mirror. A light irradiating device, wherein the lens has a narrow-angle light distribution characteristic in a thickness direction of the thin reflecting mirror and a wide-angle light distribution characteristic in a direction perpendicular to the thickness direction of the thin reflecting mirror.
道等の路面に設置される自発光道路鋲に使用されること
を特徴とする請求項１から４のいずれか１項記載の光照
射装置。5. The light irradiation device according to claim 1, wherein the light irradiation device is used for a self-luminous road stud installed on a road surface such as a center line of a road, an intersection, and a pedestrian crossing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000229665A JP2002042523A (en) | 2000-07-28 | 2000-07-28 | Light irradiation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000229665A JP2002042523A (en) | 2000-07-28 | 2000-07-28 | Light irradiation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002042523A true JP2002042523A (en) | 2002-02-08 |
Family
ID=18722744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000229665A Pending JP2002042523A (en) | 2000-07-28 | 2000-07-28 | Light irradiation device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002042523A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007058203A1 (en) * | 2005-11-15 | 2007-05-24 | Matsushita Electric Industrial Co., Ltd. | Surface illuminator and liquid crystal display using same |
| EP1843086A1 (en) * | 2006-04-05 | 2007-10-10 | Zumtobel Lighting GmbH | Reflector lamp |
| JP2007303141A (en) * | 2006-05-11 | 2007-11-22 | Sekisui Jushi Co Ltd | Self-luminous road stud |
| US8061867B2 (en) | 2009-08-19 | 2011-11-22 | Lg Innotek Co., Ltd. | Lighting device |
| CN102563483A (en) * | 2010-10-29 | 2012-07-11 | 夏普株式会社 | Light emitting device, vehicle headlamp, illumination device, and laser element |
| CN105449507A (en) * | 2016-01-06 | 2016-03-30 | 中国科学院上海光学精密机械研究所 | Compensation device and method for pulse-front distortion in femtosecond laser pulse amplification system |
| CN110718846A (en) * | 2019-10-28 | 2020-01-21 | 中国科学院上海光学精密机械研究所 | Device and method for compensating femtosecond laser pulse front edge and wavefront distortion |
| JP2021085230A (en) * | 2019-11-28 | 2021-06-03 | 大日本印刷株式会社 | Illuminating device, optical members, illumination system and illumination method |
-
2000
- 2000-07-28 JP JP2000229665A patent/JP2002042523A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007058203A1 (en) * | 2005-11-15 | 2007-05-24 | Matsushita Electric Industrial Co., Ltd. | Surface illuminator and liquid crystal display using same |
| US7969532B2 (en) | 2005-11-15 | 2011-06-28 | Panasonic Corporation | Surface illuminator and liquid crystal display using same |
| EP1843086A1 (en) * | 2006-04-05 | 2007-10-10 | Zumtobel Lighting GmbH | Reflector lamp |
| JP2007303141A (en) * | 2006-05-11 | 2007-11-22 | Sekisui Jushi Co Ltd | Self-luminous road stud |
| US8356915B2 (en) | 2009-08-19 | 2013-01-22 | Lg Innotek Co., Ltd. | Lighting device |
| US8128256B2 (en) | 2009-08-19 | 2012-03-06 | Lg Innotek Co., Ltd. | Lighting device |
| US8240877B2 (en) | 2009-08-19 | 2012-08-14 | Lg Innotek Co., Ltd. | Led lighting device including limit switch |
| US8061867B2 (en) | 2009-08-19 | 2011-11-22 | Lg Innotek Co., Ltd. | Lighting device |
| US8449138B2 (en) | 2009-08-19 | 2013-05-28 | Lg Innotek Co., Ltd. | Lighting device |
| US8534865B2 (en) | 2009-08-19 | 2013-09-17 | Lg Innotek Co., Ltd. | Lighting device |
| US8899781B2 (en) | 2009-08-19 | 2014-12-02 | Lg Innotek Co., Ltd. | Lighting device |
| US9429278B2 (en) | 2009-08-19 | 2016-08-30 | Lg Innotek Co., Ltd. | Lighting device |
| CN102563483A (en) * | 2010-10-29 | 2012-07-11 | 夏普株式会社 | Light emitting device, vehicle headlamp, illumination device, and laser element |
| CN105449507A (en) * | 2016-01-06 | 2016-03-30 | 中国科学院上海光学精密机械研究所 | Compensation device and method for pulse-front distortion in femtosecond laser pulse amplification system |
| CN110718846A (en) * | 2019-10-28 | 2020-01-21 | 中国科学院上海光学精密机械研究所 | Device and method for compensating femtosecond laser pulse front edge and wavefront distortion |
| JP2021085230A (en) * | 2019-11-28 | 2021-06-03 | 大日本印刷株式会社 | Illuminating device, optical members, illumination system and illumination method |
| JP7400403B2 (en) | 2019-11-28 | 2023-12-19 | 大日本印刷株式会社 | Lighting devices, optical members, lighting systems and lighting methods |
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