JP2013164987A - Lighting fixture - Google Patents

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JP2013164987A
JP2013164987A JP2012027573A JP2012027573A JP2013164987A JP 2013164987 A JP2013164987 A JP 2013164987A JP 2012027573 A JP2012027573 A JP 2012027573A JP 2012027573 A JP2012027573 A JP 2012027573A JP 2013164987 A JP2013164987 A JP 2013164987A
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lighting fixture
fresnel lens
lens
optical axis
irradiation direction
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JP5895191B2 (en
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Satoyuki Ogata
智行 緒方
Kanako Hoshino
加奈子 星野
Kayo Nojiri
佳代 野尻
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Panasonic Corp
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Panasonic Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture capable of controlling luminance and glare in a direction orthogonal to an optical axis.SOLUTION: A rising face 43A of a Fresnel lens 41 provided in front of an LED light source 33 in an irradiation direction is put under an optical diffusion treatment, a translucent rising wall 45 is fitted at an outer peripheral edge of the Fresnel lens 41 along an irradiation direction, and a rugged part 46 is provided on an outer periphery face of the rising wall face 45. With this, not only irradiation light in an optical axis direction, but also luminance and glare in a direction orthogonal to the optical axis can be controlled, enabling to produce liveliness with restraint of glare.

Description

本発明は、光源の前方にフレネルレンズを配置して配光制御する照明器具に関するものである。   The present invention relates to a lighting fixture that controls light distribution by arranging a Fresnel lens in front of a light source.

従来より、舞台やスタジオ等で利用されるスポットライトにおいて光源の前方に配置されるフレネルレンズが知られている（例えば、特許文献１参照）。
図６に示すように、特許文献１に記載のフレネルレンズ１００は、光源であるランプ１０１の照射方向前方（ 図６ における上方） に配置される。
ここにおいてランプ１０１は一面が開口した灯具本体（図示省略） 内に配置され、フレネルレンズ１００は灯具本体の開口部分を閉塞するように配置される。 Conventionally, a Fresnel lens arranged in front of a light source in a spotlight used in a stage or a studio is known (for example, see Patent Document 1).
As shown in FIG. 6, the Fresnel lens 100 described in Patent Document 1 is arranged in front of the irradiation direction of the lamp 101, which is a light source (upward in FIG. 6).
Here, the lamp 101 is disposed in a lamp body (not shown) whose one surface is open, and the Fresnel lens 100 is disposed so as to close the opening portion of the lamp body.

フレネルレンズ１００は、光軸１０２が中心を通る平凸レンズ状の中心レンズ部１０３と、中心レンズ部１０３の外側で光軸１０２に対して同心円的に設けられ前面側に山部１０４を有する複数の輪帯状レンズ部１０５とで構成されている。
なお、中心レンズ部１０３と複数の輪帯状レンズ部１０５とは一体に形成されている。 The Fresnel lens 100 includes a central lens portion 103 having a plano-convex lens shape with an optical axis 102 passing through the center thereof, and a plurality of concentric circles provided on the outer side of the central lens portion 103 with respect to the optical axis 102 and having a peak portion 104 on the front side. It is comprised with the ring-shaped lens part 105. FIG.
The central lens portion 103 and the plurality of annular lens portions 105 are integrally formed.

各輪帯状レンズ部１０５の山部１０４は、光軸１０２側の側面からなる立上面１０４Ａと、立上面１０４Ａに交差する凸曲面からなる有効面１０４Ｂとを有する。
そして、このフレネルレンズ１００では、山部１０４の立上面１０４Ａおよびフレネルレンズ１００の後面１０６にシボ加工のような拡散処理加工を施している。 The crest 104 of each ring-shaped lens unit 105 has a rising surface 104A formed by a side surface on the optical axis 102 side, and an effective surface 104B formed by a convex curved surface intersecting the rising surface 104A.
In the Fresnel lens 100, the rising surface 104A of the peak portion 104 and the rear surface 106 of the Fresnel lens 100 are subjected to diffusion processing such as embossing.

特開２００４−１２８０８号公報（第１図）Japanese Patent Laid-Open No. 2004-12808 (FIG. 1)

しかしながら、前述したような従来のフレネルレンズ１００においては、立上面１０４Ａおよび後面１０６に拡散処理加工を施して光軸方向の配光制御をしているが、光軸と直交する方向には十分な配光制御が行われていないという問題があった。   However, in the conventional Fresnel lens 100 as described above, the rising surface 104A and the rear surface 106 are subjected to diffusion processing to control the light distribution in the optical axis direction, but this is sufficient in the direction orthogonal to the optical axis. There was a problem that light distribution control was not performed.

本発明は、従来の問題を解決するためになされたもので、光軸と直交する方向の輝度やグレアを制御することができる照明器具を提供することを目的とする。   The present invention has been made to solve the conventional problems, and an object of the present invention is to provide a luminaire that can control luminance and glare in a direction orthogonal to the optical axis.

本発明の照明器具は、ＬＥＤ光源と、前記ＬＥＤ光源の照射方向前方に設けられたフレネルレンズと、を有し、前記フレネルレンズの立面を光拡散処理し、前記フレネルレンズの外周縁に透光性の立上壁を照射方向に沿って設けるとともに、当該立上壁の外周面に凹凸部を設けたものである。   The luminaire of the present invention has an LED light source and a Fresnel lens provided in front of the LED light source in the irradiation direction, and performs light diffusion processing on an elevation surface of the Fresnel lens and transmits the outer peripheral edge of the Fresnel lens. A light rising wall is provided along the irradiation direction, and an uneven portion is provided on the outer peripheral surface of the rising wall.

また、本発明の照明器具は、前記立上壁が、前記フレネルレンズの入射側および出射側に突出しているものである。   Moreover, the lighting fixture of this invention has the said standing wall protruded in the incident side and output side of the said Fresnel lens.

また、本発明の照明器具は、前記凹凸部が略断面三角形状であり、照射方向側の面が光軸に対して略直交するものである。   In the lighting fixture of the present invention, the uneven portion has a substantially cross-sectional triangle shape, and the surface on the irradiation direction side is substantially orthogonal to the optical axis.

さらに、本発明の照明器具は、前記レンズがハイブリッドレンズであるものである。   Furthermore, in the lighting fixture of the present invention, the lens is a hybrid lens.

本発明は、ＬＥＤ光源の照射方向前方に設けられるフレネルレンズの立面を光拡散処理し、フレネルレンズの外周縁に透光性の立上壁を照射方向に沿って設けるとともに、立上壁の外周面に凹凸部を設けたので、光軸方向の照射光のみならず、光軸と直交する方向の輝度やグレアを制御することができ、眩しさを抑えて賑やかさを演出することができるという効果を有する照明器具を提供できる。   The present invention performs a light diffusion process on the rising surface of the Fresnel lens provided in front of the LED light source in the irradiation direction, and provides a translucent rising wall along the irradiation direction on the outer peripheral edge of the Fresnel lens. Since the concavo-convex part is provided on the outer peripheral surface, not only the irradiation light in the optical axis direction but also the brightness and glare in the direction orthogonal to the optical axis can be controlled, and the liveliness can be produced while suppressing glare. It is possible to provide a lighting fixture having the effect of

本発明に係る実施形態の照明器具の側面図The side view of the lighting fixture of embodiment which concerns on this invention 灯具の断面図Cross section of the lamp レンズの断面図Lens cross section フレネルレンズの山部および立上壁の凹凸部の拡大断面図Enlarged cross-sectional view of the fresnel lens peak and uneven wall （Ａ）は立上壁の別の例を示す斜視図であり、（Ｂ）は（Ａ）中Ｂ方向から見た正面図(A) is a perspective view which shows another example of a standing wall, (B) is the front view seen from B direction in (A) 従来のフレネルレンズの断面図Cross section of a conventional Fresnel lens

以下、本発明に係る実施形態の照明器具について、図面を用いて説明する。
図１に示すように、本発明に係る実施形態の照明器具１０は、例えば天井等の被取付部に取り付けられているダクトレール（図示省略）に移動可能に取り付けて、照明方向を変えることができるスポットライトとして使用することができる。 Hereinafter, the lighting fixture of embodiment which concerns on this invention is demonstrated using drawing.
As shown in FIG. 1, the luminaire 10 according to the embodiment of the present invention can be movably attached to a duct rail (not shown) attached to a mounted portion such as a ceiling to change the illumination direction. Can be used as a spotlight.

照明器具１０は、ダクトレールに沿って移動可能な照明器具基体１１と、照明器具基体１１の下面に旋回可能（図１中矢印Ａ参照）に設けられたアーム２０と、アーム２０の下端に上下に回動可能に設けられた灯具３０を有する。   The luminaire 10 includes a luminaire base 11 that is movable along a duct rail, an arm 20 that is pivotable on the lower surface of the luminaire base 11 (see arrow A in FIG. 1), and a lower end of the arm 20. The lamp 30 is rotatably provided.

照明器具基体１１は、内部に安定器（図示省略）を収納しており、上面１１Ａの一端部にはプラグ１２が上方に突出して設けられ、他端部には係止体１３が上方に突出して設けられる。
プラグ１２は一対の端子部を有しており、プラグ１２をダクトレールに取り付けると、端子部ダクトレールの開口に沿って内部に設けられた通電板（図示省略）に接触して、点灯用の電力の供給を受けるとともに、照明器具１０をダクトレールに係止する。
係止体１３は、ダクトレールの開口に沿って移動する。
これにより、照明器具１０をダクトレールに沿って移動させる際に、照明器具基体１１がダクトレールの開口に沿った向きを維持することができる。 The lighting fixture base 11 accommodates a ballast (not shown) inside, and a plug 12 projects upward from one end of the upper surface 11A, and a locking body 13 projects upward from the other end. Provided.
The plug 12 has a pair of terminal portions. When the plug 12 is attached to the duct rail, the plug 12 comes into contact with a current-carrying plate (not shown) provided inside along the opening of the terminal portion duct rail, and is used for lighting. While being supplied with electric power, the lighting fixture 10 is locked to the duct rail.
The locking body 13 moves along the opening of the duct rail.
Thereby, when moving the luminaire 10 along the duct rail, the luminaire base 11 can maintain the orientation along the opening of the duct rail.

灯具３０は、照射方向前方に開口した略円錐台形状の容器である灯具本体３１を有しており、灯具本体３１はアーム２０の下端部に、回転軸２１により上下方向（図１中矢印Ｂ参照）に回転可能に支持される。
従って、灯具３０は、水平面内および垂直面内において回転可能に支持されるので、所望の方向を照明することができる。 The lamp 30 has a lamp body 31 that is a substantially truncated cone-shaped container that opens forward in the irradiation direction, and the lamp body 31 is moved in the vertical direction (arrow B in FIG. Reference) is supported rotatably.
Therefore, since the lamp 30 is rotatably supported in the horizontal plane and the vertical plane, it is possible to illuminate a desired direction.

図２に示すように、灯具本体３１は内部空間３１Ａを有しており、内部空間３１Ａには基台３２が収容されている。
基台３２の前面３２Ａには、ＬＥＤ光源３３を実装した実装基板３４が取り付けられている。また、ＬＥＤ光源３３の周囲における基台３２の前面３２Ａには、反射板３５が取り付けられており、ＬＥＤ光源３３から発せられた光を照射方向へ反射する。 As shown in FIG. 2, the lamp body 31 has an internal space 31A, and a base 32 is accommodated in the internal space 31A.
A mounting substrate 34 on which the LED light source 33 is mounted is attached to the front surface 32 </ b> A of the base 32. In addition, a reflector 35 is attached to the front surface 32A of the base 32 around the LED light source 33, and reflects light emitted from the LED light source 33 in the irradiation direction.

ＬＥＤ光源３３の照射方向前方には、レンズ４０が取り付けられている。また、レンズ４０の前方には、透光性を有するカバー５０が取り付けられている。
図３に示すように、レンズ４０は、ＬＥＤ光源３３に対向するフレネルレンズ４１と、フレネルレンズ４１の外周縁において照射方向に沿って全周に設けられた立上壁４５とを有する。立上壁４５は、フレネルレンズ４１に対して照射方向前側および後側に設けられている。
なお、レンズ４０としては、ガラス製およびプラスチック製に限らず、ガラス、プラスチック混用のハイブリッドレンズを用いることができる。 A lens 40 is attached in front of the irradiation direction of the LED light source 33. Further, a translucent cover 50 is attached in front of the lens 40.
As shown in FIG. 3, the lens 40 includes a Fresnel lens 41 that faces the LED light source 33, and a rising wall 45 that is provided on the entire outer periphery of the Fresnel lens 41 along the irradiation direction. The rising wall 45 is provided on the front side and the rear side in the irradiation direction with respect to the Fresnel lens 41.
The lens 40 is not limited to glass or plastic, and a hybrid lens made of glass and plastic can be used.

フレネルレンズ４１は、光軸ＣＬが中心を通る平凸レンズ状の中心レンズ部４２と、中心レンズ部４２の外側で光軸ＣＬに対して同心円的に設けられ前面側に複数の山部４３を有する輪帯状レンズ部４４とで構成されている。
山部４３は、光軸ＣＬ側にあって光軸ＣＬとの交差角が小さな立面４３Ａと、立面４３Ａと交差する例えば円弧面からなる有効面４３Ｂを有する。 The Fresnel lens 41 has a plano-convex lens-like central lens portion 42 through which the optical axis CL passes through the center, and a plurality of peak portions 43 provided concentrically with respect to the optical axis CL outside the central lens portion 42. It is composed of an annular lens portion 44.
The crest 43 has an upright surface 43A that is on the optical axis CL side and has a small crossing angle with the optical axis CL, and an effective surface 43B that is, for example, an arc surface that intersects the upright surface 43A.

図４に示すように、輪帯状レンズ部４４の各山部４３において、立面４３Ａには、例えば、シボ加工のような光拡散処理が施されている。
これにより、フレネルレンズ４１が複数の円環状の山部４３を有することにより生じる照射ムラを防止している。 As shown in FIG. 4, in each peak portion 43 of the annular lens portion 44, the elevating surface 43 </ b> A is subjected to light diffusion processing such as embossing, for example.
This prevents uneven irradiation caused by the Fresnel lens 41 having a plurality of annular ridges 43.

また、立上壁４５の外周面に凹凸部４６を設けた。凹凸部４６は、例えば照射方向前側の前側面４６Ｂを底辺とする略三角形状とすることができる。また、凹凸部４６の外側面４６Ａは、外側に凸の例えば円のような曲面形状とすることができる。
これにより、ＬＥＤ光源３３から立上壁４５に入射した光ＬＢは、凹凸部４６の外側表面４６Ａで全反射して、照射方向へ屈折して照射される。
なお、凹凸部４６において光軸ＣＬと略直交する前側面４６Ｂに、例えばシボ加工のような光拡散処理を行うこともできる。 Further, an uneven portion 46 is provided on the outer peripheral surface of the rising wall 45. The concavo-convex part 46 can be formed in, for example, a substantially triangular shape with the front side surface 46B on the front side in the irradiation direction as a base. In addition, the outer surface 46A of the concavo-convex portion 46 can have a curved shape such as a circle convex outward.
Thereby, the light LB incident on the rising wall 45 from the LED light source 33 is totally reflected by the outer surface 46A of the concavo-convex portion 46, and is refracted and irradiated in the irradiation direction.
Note that a light diffusion process such as embossing can also be performed on the front side surface 46B substantially orthogonal to the optical axis CL in the concavo-convex portion 46.

以上、説明した本発明に係る実施形態の照明器具１０によれば、ＬＥＤ光源３３の照射方向前方に設けられるフレネルレンズ４１の立面４３Ａを光拡散処理した。また、フレネルレンズ４１の外周縁に透光性の立上壁４５を照射方向に沿って設けるとともに、立上壁４５の外周面に凹凸部４６を設けた。
このため、光軸ＣＬ方向の照射光のみならず、光軸ＣＬと直交する方向に照射される光の輝度やグレアを制御することができ、眩しさを抑えて賑やかさを演出することができる。 As described above, according to the lighting fixture 10 of the embodiment according to the present invention described above, the elevation surface 43 </ b> A of the Fresnel lens 41 provided in front of the irradiation direction of the LED light source 33 is subjected to light diffusion processing. In addition, a translucent rising wall 45 is provided on the outer peripheral edge of the Fresnel lens 41 along the irradiation direction, and an uneven portion 46 is provided on the outer peripheral surface of the rising wall 45.
For this reason, it is possible to control not only the irradiation light in the direction of the optical axis CL but also the brightness and glare of the light irradiated in the direction orthogonal to the optical axis CL, and it is possible to produce liveliness while suppressing glare. .

また、立上壁４５が、フレネルレンズ４１の入射側および出射側に突出しているので、フレネルレンズ４１に達しない光に対しても、立上壁４５により配光制御できる。   Further, since the rising wall 45 protrudes to the incident side and the emission side of the Fresnel lens 41, light distribution control can be performed by the rising wall 45 even for light that does not reach the Fresnel lens 41.

また、凹凸部４６が略断面三角形状であり、照射方向側の前側面４６Ｂが光軸に対して略直交する。このため、ＬＥＤ光源３３から立上壁４５に入射した光ＬＢは、凹凸部４６の外側表面４６Ａで全反射して、照射方向へ屈折して照射されるので、配光効率が向上する。   Further, the concavo-convex portion 46 has a substantially triangular cross section, and the front side surface 46B on the irradiation direction side is substantially orthogonal to the optical axis. For this reason, the light LB incident on the rising wall 45 from the LED light source 33 is totally reflected by the outer surface 46A of the concavo-convex portion 46 and is refracted and irradiated in the irradiation direction, so that the light distribution efficiency is improved.

さらに、レンズ４０にハイブリッドレンズを用いることができるので、高精度の加工が可能になる。   Furthermore, since a hybrid lens can be used for the lens 40, highly accurate processing is possible.

なお、本発明の照明器具は、前述した実施形態に限定されるものでなく、適宜な変形、改良等が可能である。
例えば、前述した実施形態においては、立上壁４５の外周面に形成する凹凸部４６を、光軸ＣＬと直交するリング形状に設けた場合を例示した。このほか、図５（Ａ）および（Ｂ）に示すように、立上壁４５Ｂに、光軸ＣＬと平行な凹凸部４７を設けることもできる。 In addition, the lighting fixture of this invention is not limited to embodiment mentioned above, A suitable deformation | transformation, improvement, etc. are possible.
For example, in the above-described embodiment, the case where the uneven portion 46 formed on the outer peripheral surface of the rising wall 45 is provided in a ring shape orthogonal to the optical axis CL is exemplified. In addition, as shown in FIGS. 5 (A) and 5 (B), an uneven portion 47 parallel to the optical axis CL can be provided on the rising wall 45B.

１０ 照明器具
３３ ＬＥＤ光源
４１ フレネルレンズ
４３Ａ 立面
４５、４５Ｂ 立上壁
４６、４７ 凹凸部
４６Ｂ 前側面（照射方向側の面） DESCRIPTION OF SYMBOLS 10 Lighting fixture 33 LED light source 41 Fresnel lens 43A Elevation surface 45, 45B Elevation wall 46, 47 Concavity and convexity 46B Front side surface (surface on the irradiation direction side)

Claims (4)

ＬＥＤ光源と、
前記ＬＥＤ光源の照射方向前方に設けられたフレネルレンズと、を有し、
前記フレネルレンズの立面を光拡散処理し、
前記フレネルレンズの外周縁に透光性の立上壁を照射方向に沿って設けるとともに、当該立上壁の外周面に凹凸部を設けた照明器具。 An LED light source;
A Fresnel lens provided in front of the irradiation direction of the LED light source,
Light diffusing treatment of the elevation surface of the Fresnel lens,
The lighting fixture which provided the translucent standing wall along the irradiation direction in the outer periphery of the said Fresnel lens, and provided the uneven | corrugated | grooved part in the outer peripheral surface of the said standing wall. 請求項１に記載の照明器具において、
前記立上壁が、前記フレネルレンズの入射側および出射側に突出している照明器具。 The lighting fixture according to claim 1,
The lighting fixture from which the said standing wall protrudes in the entrance side and exit side of the said Fresnel lens. 請求項１または請求項２に記載の照明器具において、
前記凹凸部が略断面三角形状であり、照射方向側の面が光軸に対して略直交する照明器具。 The lighting fixture according to claim 1 or 2,
The illuminating device in which the uneven portion has a substantially cross-sectional triangle shape, and the surface on the irradiation direction side is substantially orthogonal to the optical axis. 請求項１ないし請求項３のうちのいずれか１項に記載の照明器具において、
前記レンズがハイブリッドレンズである照明器具。 In the lighting fixture of any one of Claims 1 thru | or 3,
A lighting fixture in which the lens is a hybrid lens.
JP2012027573A 2012-02-10 2012-02-10 lighting equipment Active JP5895191B2 (en)

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JP2015207396A (en) * 2014-04-18 2015-11-19 パナソニックＩｐマネジメント株式会社 Lighting fixture
JP2016091957A (en) * 2014-11-10 2016-05-23 パナソニックＩｐマネジメント株式会社 Luminaire
JP2016091954A (en) * 2014-11-10 2016-05-23 パナソニックＩｐマネジメント株式会社 Luminaire
JP2018180127A (en) * 2017-04-06 2018-11-15 パナソニックＩｐマネジメント株式会社 Lens and lighting apparatus
JP2019040888A (en) * 2018-12-13 2019-03-14 コイズミ照明株式会社 Lighting instrument
US11060673B2 (en) 2016-08-11 2021-07-13 Abl Ip Holding Llc Luminaires with transition zones for glare control

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JP2006086008A (en) * 2004-09-16 2006-03-30 Toshiba Corp Fresnel lens and lighting system
JP2011095492A (en) * 2009-10-29 2011-05-12 Asahi Rubber Inc Hybrid lens
WO2011159436A2 (en) * 2010-06-18 2011-12-22 Rambus International Ltd. Light bulb using solid-state light sources

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JPH10500081A (en) * 1994-05-18 1998-01-06 エムテック・セイフティー・プロダクツ・プロプライエタリー・リミテッド Safety / warning device
US6808291B1 (en) * 1994-05-18 2004-10-26 Elfare Corporation Pty Ltd. Safety/warning device
JP2000164002A (en) * 1998-11-26 2000-06-16 Kenji Kojima Light diffusion type guide lamp
JP2006086008A (en) * 2004-09-16 2006-03-30 Toshiba Corp Fresnel lens and lighting system
JP2011095492A (en) * 2009-10-29 2011-05-12 Asahi Rubber Inc Hybrid lens
WO2011159436A2 (en) * 2010-06-18 2011-12-22 Rambus International Ltd. Light bulb using solid-state light sources

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015207396A (en) * 2014-04-18 2015-11-19 パナソニックＩｐマネジメント株式会社 Lighting fixture
JP2016091957A (en) * 2014-11-10 2016-05-23 パナソニックＩｐマネジメント株式会社 Luminaire
JP2016091954A (en) * 2014-11-10 2016-05-23 パナソニックＩｐマネジメント株式会社 Luminaire
US11060673B2 (en) 2016-08-11 2021-07-13 Abl Ip Holding Llc Luminaires with transition zones for glare control
JP2018180127A (en) * 2017-04-06 2018-11-15 パナソニックＩｐマネジメント株式会社 Lens and lighting apparatus
JP2019040888A (en) * 2018-12-13 2019-03-14 コイズミ照明株式会社 Lighting instrument

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