JP4894600B2 - lighting equipment - Google Patents

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JP4894600B2
JP4894600B2 JP2007114702A JP2007114702A JP4894600B2 JP 4894600 B2 JP4894600 B2 JP 4894600B2 JP 2007114702 A JP2007114702 A JP 2007114702A JP 2007114702 A JP2007114702 A JP 2007114702A JP 4894600 B2 JP4894600 B2 JP 4894600B2
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lamp
work surface
cover
lighting
light
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JP2008270096A (en
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秀基 田中
宗一郎 川田
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Panasonic Corp
Panasonic Electric Works Co Ltd
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Panasonic Corp
Matsushita Electric Works Ltd
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本発明は、照明カバーを備えた照明器具に関する。   The present invention relates to a lighting fixture including a lighting cover.

照明器具において、光源となるランプを露出させている場合や、ランプを透明の照明カバーで覆っている場合には、点灯時にランプを作業面側から直視するとグレアを生じて不快感を与えるといった問題や、非点灯時にもランプが作業面側から視認されるので意匠性が低くなるといった問題がある。これに対して、図３に概略的に示すように、光源となるランプ１を設置した照明器具本体２に、シボ加工等の拡散処理を施した照明カバー３を備えてランプ１を覆うようにした照明器具が、従来から提案されている（例えば特許文献１参照）。このように拡散処理を施した照明カバー３を備えておけば、点灯時にランプ１を作業面２０側から視たときも、拡散処理された照明カバー３を通じてランプ１を視ることになるのでグレアを生じることがなく、また、非点灯時にはランプ１が作業面２０側から視認され難くなるので意匠性は良好に保持される。 In the luminaire, and if exposes a lamp as a light source, when covering the lamp lighting cover transparent, when Ru discomfort caused glare directly viewing the work surface side of the lamp during lighting There is a problem that the design property is lowered because the lamp is visually recognized from the work surface side even when it is not lit. On the other hand, as schematically shown in FIG. 3, the luminaire main body 2 provided with the lamp 1 serving as a light source is provided with a lighting cover 3 that has been subjected to diffusion processing such as embossing so as to cover the lamp 1. The lighting fixture which was made is proposed conventionally (for example, refer patent document 1). If the illumination cover 3 subjected to the diffusion treatment is provided in this way, the lamp 1 can be seen through the illumination cover 3 subjected to the diffusion treatment even when the lamp 1 is viewed from the work surface 20 side when it is turned on. In addition, when the lamp is not lit, the lamp 1 becomes difficult to be visually recognized from the work surface 20 side, so that the design is kept good.

ところが、上記の拡散処理された照明カバー３を備えただけの照明器具にあっては、以下の問題が生じる。つまり、点灯時にランプ１から照射されるランプ光の全てが照明カバー３を透過する際に拡散処理されるため、透過損失による全体の光量ロスが大きくなり、しかも拡散処理された光は全体に広がるので、作業面２０を効率的に照明することができないという問題である。
特開２００６−２９４３５２号公報 However, the following problem arises in the luminaire simply having the diffusing illumination cover 3 described above. That is, since all of the lamp light emitted from the lamp 1 when lit is transmitted through the illumination cover 3, the entire light amount loss due to transmission loss is increased, and the light subjected to the diffusion process spreads throughout. As a result, the work surface 20 cannot be efficiently illuminated.
JP 2006-294352 A

本発明は上記問題点に鑑みて発明したものであって、ランプを直視することによるグレアを防止しながら、ランプの光量を有効に利用して作業面を明るく照らすことの可能な照明器具を提供することを、課題とするものである。   The present invention has been invented in view of the above problems, and provides a luminaire capable of brightly illuminating a work surface by effectively using the amount of light of a lamp while preventing glare from directly viewing the lamp. It is a task to do.

上記課題を解決するために本発明を、光源となるランプ１を設置した照明器具本体２と、ランプ１を覆う照明カバー３と、ランプ光を作業面２０に集光するリフレクタ９とを具備し、照明カバー３を透過して照射されるランプ光で作業面２０を照らす照明器具において、前記ランプ１は、前記照明器具本体２のランプ設置面４に複数個設置したＬＥＤからなり、前記照明カバー３は、複数個のＬＥＤと作業面２０の間に位置する中央部分を拡散部７である底壁部５とし、この底壁部５を囲む周縁部分を透明部８である側壁部６とした、有底筒状のカバーであり、前記リフレクタ９は、ＬＥＤを視認することが可能な作業面２０側の領域を、照明カバー３の拡散部７である底壁部５を通じてのみＬＥＤが視認可能な領域に規制し、且つ、透明部８である側壁部６を透過したランプ光を作業面２０に向けて集光するものであり、前記リフレクタ９の作業面２０をむく開口縁１１上の点と、前記照明カバー３の底壁部５の端縁上の点とを結ぶ直線Ｌを描いたとき、この直線Ｌの内側に位置するように、前記ランプ設置面４上にて全てのＬＥＤを配置したものとする。 In order to solve the above-described problems, the present invention includes a luminaire main body 2 provided with a lamp 1 serving as a light source, an illumination cover 3 that covers the lamp 1, and a reflector 9 that condenses the lamp light on the work surface 20. In the lighting fixture that illuminates the work surface 20 with the lamp light that is transmitted through the lighting cover 3, the lamp 1 includes a plurality of LEDs installed on the lamp installation surface 4 of the lighting fixture body 2, and the lighting cover 3 , a central portion located between the plurality of LEDs and the work surface 20 is a bottom wall portion 5 that is a diffusion portion 7 , and a peripheral portion surrounding the bottom wall portion 5 is a side wall portion 6 that is a transparent portion 8 . In addition, the reflector 9 is a bottomed cylindrical cover, and the reflector 9 can see the LED only through the bottom wall portion 5 that is the diffusion portion 7 of the lighting cover 3 in the region where the LED can be visually recognized. restricted to a region, and a transparent portion In a lamp light transmitted through the sidewall portion 6 toward the working surface 20 is intended to collect light, a point on the opening edge 11 which faces the working surface 20 of the reflector 9, the bottom wall 5 of the light cover 3 It is assumed that all the LEDs are arranged on the lamp installation surface 4 so as to be positioned inside the straight line L when a straight line L connecting the points on the edge of the lamp is drawn .

上記構成の照明器具にあっては、複数個のＬＥＤから放出されるランプ光は照明カバー３の拡散部７である底壁部５を通じて作業面２０側に直接照射されるので、作業面２０側の使用者がＬＥＤを直視してグレアを生じるといった事態は防止される。しかも、この透過率が小さく且つ指向性の低い拡散部７は照明カバー３の中央部分の底壁部５に限定し、他の周縁部分の側壁部６は透過率が大きく且つ指向性の高い透明部８とし、この透明部８である側壁部６を透過したランプ光はリフレクタ９を介して作業面２０側に集光されるように設けているので、全体の光量を極力ロスすることなく、作業面２０を効率的に照明することが可能となっている。 In the lighting fixture having the above-described configuration, the lamp light emitted from the plurality of LEDs is directly irradiated to the work surface 20 side through the bottom wall portion 5 which is the diffusion portion 7 of the lighting cover 3. It is possible to prevent a situation in which the user of the user sees the LED directly and causes glare. Moreover, the diffusion part 7 having a low transmittance and low directivity is limited to the bottom wall part 5 in the central part of the lighting cover 3, and the side wall part 6 in the other peripheral part is transparent with a high transmittance and high directivity. Since the lamp light transmitted through the side wall portion 6 which is the transparent portion 8 is condensed to the work surface 20 side via the reflector 9, the entire light amount is lost as much as possible. The work surface 20 can be efficiently illuminated.

また、上記リフレクタ９は、ランプ１を視認することが可能な作業面２０側の領域を、照明カバー３の拡散部７を通じてのみランプ１が視認可能な領域に規制するものであるから、作業面２０側の使用者がランプ１を直視してグレアを生じるといった事態は更に確実に防止される。 Further, the reflector 9, the working surface 20 side of the region which can visually recognize the lamp 1, only from the lamp 1 is intended to regulate the viewable area through the diffusion part 7 of the light cover 3, the working surface The situation in which the user on the 20th side causes glare when looking directly at the lamp 1 is further reliably prevented.

請求項１に係る発明は、ランプを直視することによるグレアを防止しながら、ランプの光量を有効に利用して作業面を明るく照らすことができるという効果を奏する。   The invention according to claim 1 has an effect that the work surface can be brightly illuminated by effectively using the light quantity of the lamp while preventing glare due to direct viewing of the lamp.

以下、本発明を添付図面に示す実施形態に基づいて説明する。なお、図３に示した従来例と同様の構成については同一符号を付して、重複する説明は省略する。図１、図２には、本発明の実施形態における一例の照明器具を示している。本例の照明器具は、作業面２０を上方から照明するためのダウンライトであり、具体的には、居室空間内の流し元を作業面とする流し元灯として、好適に用いられる。   Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings. In addition, the same code | symbol is attached | subjected about the structure similar to the prior art example shown in FIG. 3, and the overlapping description is abbreviate | omitted. 1 and 2 show an example of a lighting fixture according to an embodiment of the present invention. The luminaire of this example is a downlight for illuminating the work surface 20 from above, and specifically, is suitably used as a sink light that uses the sink in the living room space as the work surface.

本例においては、照明器具本体２の下面として円形状に形成される平坦なランプ設置面４に、ＬＥＤから成るランプ１を複数個（図示例では四つ）設置している。各ランプ１の配置は、ランプ設置面４の外縁から一定幅だけ内側に描かれる円周上において、周方向に等間隔を隔てた箇所となっている（図２参照）。   In this example, a plurality (four in the illustrated example) of lamps 1 made of LEDs are installed on a flat lamp installation surface 4 formed in a circular shape as the lower surface of the luminaire main body 2. The lamps 1 are arranged at equal intervals in the circumferential direction on a circumference drawn by a certain width from the outer edge of the lamp installation surface 4 (see FIG. 2).

照明器具本体２の下側には、ランプ設置面４との間で全てのランプ１を囲む有底筒状の照明カバー３が取り付けてある。この照明カバー３は、円板状を成す底壁部５と、この底壁部５の外周縁から上方に延設される円筒状の側壁部６から成る。照明カバー３のうち底壁部５にはシボ加工を施してあり、透過する光が拡散するようになっている。また照明カバー３のうち側壁部６にはシボ加工等の拡散処理は施してなく、光が拡散することなく高効率で透過するようになっている。即ち本例にあっては、照明カバー３のうちで各ランプ１とその下方の作業面２０との間に位置する中央部分を成す底壁部５が、透過率が小さく且つ指向性の低い拡散部７となり、照明カバー３のうちで該拡散部７を囲む周縁部分を成す側壁部６が、透過率が大きく且つ指向性の高い透明部８となる構造である。   A bottomed cylindrical lighting cover 3 that surrounds all the lamps 1 with the lamp installation surface 4 is attached to the lower side of the lighting fixture body 2. The lighting cover 3 includes a bottom wall portion 5 having a disk shape and a cylindrical side wall portion 6 extending upward from the outer peripheral edge of the bottom wall portion 5. The bottom wall portion 5 of the illumination cover 3 is subjected to a textured process so that transmitted light is diffused. Further, the side wall portion 6 of the lighting cover 3 is not subjected to diffusion processing such as embossing, and light is transmitted with high efficiency without being diffused. That is, in this example, the bottom wall portion 5 forming the central portion located between each lamp 1 and the work surface 20 below the lamp cover 3 in the illumination cover 3 has a low transmittance and a low directivity. The side wall part 6 which becomes the part 7 and forms the peripheral part surrounding the diffusion part 7 in the illumination cover 3 has a structure that becomes a transparent part 8 having a high transmittance and high directivity.

更に照明器具本体２の照明カバー３を囲む位置には、照明カバー３の透明な側壁部６を透過したランプ光を反射させて下方の作業面２０に集光させるためのリフレクタ９を装着させている。このリフレクタ９は、ランプ１及び照明カバー３から作業面２０側に（即ち下方に）向けて離れるほど内径が漸次大きくなるように形成したスカート状の部材であり、その内周面が反射面１０となっている。   Further, a reflector 9 for reflecting the lamp light transmitted through the transparent side wall 6 of the lighting cover 3 and condensing it on the lower work surface 20 is attached to a position surrounding the lighting cover 3 of the lighting fixture body 2. Yes. The reflector 9 is a skirt-like member formed so that its inner diameter gradually increases as it moves away from the lamp 1 and the illumination cover 3 toward the work surface 20 (that is, downward), and its inner peripheral surface has a reflecting surface 10. It has become.

リフレクタ９の作業面２０側を向いて開口する開口縁１１は、照明カバー３の底壁部５よりも作業面２０側に大きく突出した形状になっている。図１に位置関係を概略的に示すように、この開口縁１１上の点と照明カバー３の底壁部５の端縁上の点とを結ぶ直線Ｌを描いたとき、該直線Ｌの内側に位置するように各ランプ１を配置させているので、作業面２０側に位置する使用者からすればリフレクタ９が遮蔽板となり、照明カバー３のうち拡散処理を施した底壁部５を通じてしか各ランプ１を視認することができない構造となっている。換言すれば、上記リフレクタ９は透明な側壁部６を通じて側方に透過されるランプ光を下方に集光させる部材として機能すると共に、各ランプ１を視認することが可能な作業面２０側の領域を、照明カバー３の拡散部７を通じてのみランプ１が視認可能な領域（図中の直線Ｌの内側の領域）に規制する部材としても、機能する。なお、図示例では各ランプ１の全部が直線Ｌの内側に位置するように配置しているが、各ランプ１の一部のみが直線Ｌの外側に位置する配置としてもよい。   The opening edge 11 that opens toward the work surface 20 side of the reflector 9 has a shape that protrudes larger toward the work surface 20 side than the bottom wall portion 5 of the lighting cover 3. As schematically shown in FIG. 1, when a straight line L connecting the point on the opening edge 11 and the point on the edge of the bottom wall portion 5 of the lighting cover 3 is drawn, the inside of the straight line L is drawn. Since the lamps 1 are arranged so as to be positioned at the position of the work surface 20, the reflector 9 serves as a shielding plate for the user located on the work surface 20 side, and only through the bottom wall portion 5 subjected to the diffusion treatment in the lighting cover 3. Each lamp 1 cannot be visually recognized. In other words, the reflector 9 functions as a member for condensing the lamp light transmitted laterally through the transparent side wall 6 downward, and is an area on the work surface 20 side where each lamp 1 can be visually recognized. It functions also as a member which restrict | limits to the area | region (area | region inside the straight line L in a figure) which the lamp | ramp 1 can visually recognize only through the spreading | diffusion part 7 of the illumination cover 3. FIG. In the illustrated example, all the lamps 1 are arranged so as to be located inside the straight line L, but only a part of each lamp 1 may be arranged outside the straight line L.

上記構成の照明器具とすることで、各ランプ１のランプ光は照明カバー３の拡散部７を通じて作業面２０側に直接照射されることとなり、作業面２０側の使用者がランプ１を直視してグレアを生じるといった事態が防止される。しかも、この透過率が小さく且つ指向性の低い拡散部分は照明カバー３のうち底壁部５に限定し、他の部分つまり側壁部６は透過率が大きく且つ指向性の高い透明部分とし、この透明部分を透過して側方に照射されたランプ光はリフレクタ９を介して作業面２０の主に周縁部分に集光されるように設けているので、光量を極力ロスすることなく、作業面２０を効率的に照明することが可能となっている。   With the lighting fixture having the above-described configuration, the lamp light of each lamp 1 is directly irradiated to the work surface 20 side through the diffusion portion 7 of the lighting cover 3, and the user on the work surface 20 side looks directly at the lamp 1. This prevents the occurrence of glare. In addition, the diffusion portion having a low transmittance and low directivity is limited to the bottom wall portion 5 of the lighting cover 3, and the other portion, that is, the side wall portion 6, is a transparent portion having a high transmittance and high directivity. Since the lamp light transmitted through the transparent portion and irradiated to the side is provided so as to be condensed mainly on the peripheral portion of the work surface 20 via the reflector 9, the work surface can be obtained without losing the amount of light as much as possible. 20 can be efficiently illuminated.

なお、照明カバー３の底壁部５の拡散処理はシボ加工には限定されず、透過するランプ光を拡散させる処理であれば、他の手段であっても構わない。またランプ１についてもＬＥＤには限定されず、蛍光灯等のいずれを用いてもよい。ただし本例の構造は、蛍光灯と比較して輝度は高いが光量の少ないＬＥＤを用いてＬＥＤ照明器具とした場合に、特に相性の良い構造である。更に、本例の構造はダウンライトに限定されず、光源となるランプ１、作業面２０、作業者視点の位置が図１に示すような関係となる照明器具であれば、問題なく適用可能である。   Note that the diffusion process of the bottom wall portion 5 of the illumination cover 3 is not limited to the embossing process, and other means may be used as long as the process diffuses the transmitted lamp light. Further, the lamp 1 is not limited to the LED, and any fluorescent lamp or the like may be used. However, the structure of this example is a structure that is particularly compatible with an LED lighting apparatus using an LED that has a high luminance but a small amount of light compared to a fluorescent lamp. Furthermore, the structure of the present example is not limited to a downlight, and can be applied without any problem as long as the lamp 1 as a light source, the work surface 20, and the position of the worker's viewpoint are in the relationship shown in FIG. is there.

本発明の実施形態における一例の照明器具を示す説明用の概略断面図である。It is a schematic sectional drawing for description which shows an example lighting fixture in embodiment of this invention. 同上の照明器具を示す説明用の概略斜視図である。It is a schematic perspective view for description which shows a lighting fixture same as the above. 従来の照明器具を示す説明用の概略断面図であるIt is a schematic sectional drawing for description which shows the conventional lighting fixture.

符号の説明Explanation of symbols

１ ランプ
２ 照明器具本体
３ 照明カバー
７ 拡散部
８ 透明部
９ リフレクタ
２０ 作業面 DESCRIPTION OF SYMBOLS 1 Lamp 2 Lighting fixture main body 3 Lighting cover 7 Diffusion part 8 Transparent part 9 Reflector 20 Work surface

Claims (1)

光源となるランプを設置した照明器具本体と、ランプを覆う照明カバーと、ランプ光を作業面に集光するリフレクタとを具備し、照明カバーを透過して照射されるランプ光で作業面を照らす照明器具において、
前記ランプは、前記照明器具本体のランプ設置面に複数個設置したＬＥＤからなり、
前記照明カバーは、複数個のＬＥＤと作業面の間に位置する中央部分を拡散部である底壁部とし、この底壁部を囲む周縁部分を透明部である側壁部とした、有底筒状のカバーであり、
前記リフレクタは、ＬＥＤを視認することが可能な作業面側の領域を、照明カバーの拡散部である底壁部を通じてのみＬＥＤが視認可能な領域に規制し、透明部である側壁部を透過したランプ光を作業面に向けて集光するものであり、
前記リフレクタの作業面をむく開口縁上の点と、前記照明カバーの底壁部の端縁上の点とを結ぶ直線を描いたとき、この直線の内側に位置するように、前記ランプ設置面上にて全てのＬＥＤを配置した
ことを特徴とする照明器具。 A luminaire body provided with a lamp as a light source, an illumination cover that covers the lamp, and a reflector that condenses the lamp light on the work surface, and illuminates the work surface with the lamp light that is irradiated through the light cover. In lighting fixtures,
The lamp is composed of a plurality of LEDs installed on the lamp installation surface of the luminaire body,
The lighting cover has a bottomed tube in which a central portion located between a plurality of LEDs and a work surface is a bottom wall portion which is a diffusion portion , and a peripheral portion surrounding the bottom wall portion is a side wall portion which is a transparent portion. Shaped cover,
The reflector restricts the area on the work surface side where the LED can be visually recognized to an area where the LED is visible only through the bottom wall part which is the diffusion part of the lighting cover, and transmits the side wall part which is the transparent part. Condensing the lamp light toward the work surface ,
When a straight line connecting a point on the opening edge that peels off the working surface of the reflector and a point on the edge of the bottom wall portion of the lighting cover is drawn, the lamp installation surface is positioned so as to be located inside the straight line. A lighting fixture characterized in that all LEDs are arranged above .
JP2007114702A 2007-04-24 2007-04-24 lighting equipment Expired - Fee Related JP4894600B2 (en)

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JP5328411B2 (en) * 2009-02-23 2013-10-30 シャープ株式会社 Light bulb type lighting device
JP5877575B2 (en) * 2009-07-31 2016-03-08 東芝ライテック株式会社 lighting equipment
JP2011129473A (en) * 2009-12-21 2011-06-30 Panasonic Electric Works Co Ltd Lighting fixture
JP5489338B2 (en) * 2010-02-23 2014-05-14 パナソニック株式会社 lighting equipment
JP5711635B2 (en) * 2011-09-26 2015-05-07 パナソニック株式会社 lighting equipment
KR101906893B1 (en) * 2012-04-27 2018-10-11 삼성전자주식회사 Light emitting device
JP2014093129A (en) 2012-10-31 2014-05-19 Toshiba Lighting & Technology Corp Light-emitting unit and luminaire

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JPH04226611A (en) * 1990-12-29 1992-08-17 Toshiba Lighting & Technol Corp Lighting equipment
JPH11213725A (en) * 1998-01-22 1999-08-06 Matsushita Electric Works Ltd Luminaire

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