JP4525360B2 - Lighting device - Google Patents
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- JP4525360B2 JP4525360B2 JP2005016374A JP2005016374A JP4525360B2 JP 4525360 B2 JP4525360 B2 JP 4525360B2 JP 2005016374 A JP2005016374 A JP 2005016374A JP 2005016374 A JP2005016374 A JP 2005016374A JP 4525360 B2 JP4525360 B2 JP 4525360B2
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本発明は、平面状に配置された複数の光源からの光を拡散して広い平面から柔らかい照明光を生じさせる照明装置に関する。 The present invention relates to an illuminating device that diffuses light from a plurality of light sources arranged in a plane and generates soft illumination light from a wide plane.
従来より、ギャラリー、エントランス等において、天井面に多数の蛍光管を取り付け、これに照明カバーをして、柔らかい面照明にする照明装置が用いられている。この照明装置には、蛍光管が視認されないことが望まれ、この要求の対応としては、光を拡散するシートを枠体に張って照明カバーとした照明装置が用いられている。例えば特開２００１−３０７５３３号公報には、天井面に多数の蛍光管とこれをフレーム枠に光拡散シートを張った照明カバーで覆った照明装置が記載されている。
しかしながら、従来の照明装置は、多数の蛍光管を天井に取り付け、この多数の蛍光管を枠体に光拡散シートを張った照明カバーで覆っている構造となっており、光源に引き寄せられて隙間から照明装置内に入り込んだ虫が、死んで光拡散シート上に溜まることになる。そのため下方から見ると光拡散シート上に溜まった虫の死骸が黒ずんで見え、美観を損ねることとなっていた。 However, the conventional lighting device has a structure in which a large number of fluorescent tubes are attached to the ceiling, and the large number of fluorescent tubes are covered with a lighting cover in which a light diffusion sheet is stretched on a frame body. The insects that have entered the lighting device from the dead die and accumulate on the light diffusion sheet. For this reason, when viewed from below, the dead bodies of insects accumulated on the light diffusing sheet appear darkened, detracting from aesthetics.
解決しようとする問題点は、光拡散シート上に溜まった虫の死骸によって照明カバーの美観を損ねることを防止することにある。 The problem to be solved is to prevent the aesthetic appearance of the lighting cover from being damaged by insect carcasses accumulated on the light diffusion sheet.
本発明の照明装置は、天井面に多数の光源を取り付け、該光源を枠体に光拡散シートを張った照明カバーで覆った照明装置において、枠体の光拡散シートを貼った面とは反対側に透光性シートを設け、光拡散シートと透光性シートと枠体とによって密閉空間を形成することを特徴としている。この構成とすることによって、光源に引き寄せられた虫が死んでも、虫の死骸は光拡散シート上ではなく透光性シート上に溜まることになる。 The illuminating device of the present invention is an illuminating device in which a large number of light sources are attached to a ceiling surface, and the light source is covered with an illumination cover in which a light diffusing sheet is stretched on a frame body, which is opposite to the surface on which the light diffusing sheet is pasted A translucent sheet is provided on the side, and a sealed space is formed by the light diffusion sheet, the translucent sheet, and the frame. With this configuration, even if the insect attracted by the light source dies, the insect carcasses accumulate not on the light diffusion sheet but on the translucent sheet.
本発明の照明装置では、天井面に多数の光源を取り付け、該光源を枠体に光拡散シートを張った照明カバーで覆った照明装置において、枠体の光拡散シートを張った側とは反対側に透光性シートを設け、光拡散シートと透光性シートと枠体とによって密閉空間を形成する構成にしている。この構成とすることで、透光性シート上に虫の死骸が溜まることになり、光拡散シート上には虫の死骸が溜まることが無くなり、下方から見ると光拡散シート上に虫の死骸が溜まっていないので光拡散シートが黒ずんで見えることがなく、美観を維持できる効果が得られる。 In the illuminating device of the present invention, in the illuminating device in which a large number of light sources are attached to the ceiling surface and the light sources are covered with a lighting cover in which a light diffusing sheet is stretched on the frame, the side opposite to the side on which the light diffusing sheet is stretched A translucent sheet is provided on the side, and a sealed space is formed by the light diffusion sheet, the translucent sheet, and the frame. With this configuration, insect corpses are collected on the translucent sheet, and insect corpses are not collected on the light diffusion sheet. When viewed from below, insect corpses are collected on the light diffusion sheet. Since it does not accumulate, the light diffusing sheet does not appear blackened, and an effect of maintaining the aesthetic appearance can be obtained.
本発明の照明装置は、光源と光拡散シートと透光性シートとを有する構成とされ、透光性シートは、光拡散シートを張った枠体の光源側に設けられ、光拡散シートと枠体と透光性シートによって密閉空間が形成されている。ここで言う密閉空間とは、虫が侵入しない程度の密閉性がある空間のことである。光拡散シートと透光性シートとは、それぞれ枠体に接着、螺子留め、または何らかの手段で枠体に固定されている。光拡散シートは、光源側からの光を拡散して透過させる働きをしている。光拡散シートは、枠材に張られて照明カバーとして、光源を覆うように設けられている。
透光性シートとしては、樹脂系板または樹脂系シート、樹脂系フィルム、無機繊維系シート、無機繊維系シートに樹脂を含浸したものなどが用いられる。不燃性の点からは、無機繊維系シートに樹脂を含浸したものが好ましく用いられる。
無機繊維系シートとしては、例えばガラス繊維織物、ガラス繊維不織布などがあげられる。
The illuminating device of the present invention is configured to include a light source, a light diffusing sheet, and a translucent sheet, and the translucent sheet is provided on the light source side of the frame body on which the light diffusing sheet is stretched. A sealed space is formed by the body and the translucent sheet. The sealed space referred to here is a space having a sealing property that does not allow insects to enter. The light diffusing sheet and the translucent sheet are fixed to the frame by bonding, screwing, or some means to the frame. The light diffusion sheet functions to diffuse and transmit light from the light source side. The light diffusion sheet is provided on the frame member so as to cover the light source as an illumination cover.
As the translucent sheet, a resin-based plate or a resin-based sheet, a resin-based film, an inorganic fiber-based sheet, an inorganic fiber-based sheet impregnated with a resin, or the like is used. From the point of nonflammability, an inorganic fiber sheet impregnated with a resin is preferably used.
Examples of the inorganic fiber-based sheet include glass fiber woven fabric and glass fiber non-woven fabric.
光拡散シートは、適度な透光性と隠蔽性を発揮しうる光拡散性のもので、且つ枠体に張って使用することが出来るような柔軟性・耐屈曲性を持ったものが好適に用いられる。なかでも、透光性のガラス繊維織物に耐熱透光性樹脂を貼着又は含浸させてなるシートが、耐熱性・不燃性・防汚性に優れているので好ましい。
また、ガラス繊維織物は、開繊処理が施されていることが好ましい。開繊処理とは、織物の経糸・緯糸には、多数のフィラメントを撚り合わせて一本の糸として用いられているが、この一本の糸のフィラメント間を広げて間隔を開ける（ばらけさせる）ことである。例えば、多数のガラスフィラメントからなるガラス繊維織物に、開繊処理を施すことによってそのフィラメントをばらけさせた場合、ガラス繊維織物の容積又は面積を増大させることになる。このことによって全光線透過率を向上させると共に平行光線透過率を低減することできる。
耐熱透光性樹脂としては、フッ素樹脂、シリコン樹脂等が考えられるが、フッ素樹脂が好ましく、中でも軟質フッ素樹脂が最も好ましい。
The light diffusing sheet is preferably a light diffusing sheet that can exhibit appropriate translucency and concealment, and has flexibility and bending resistance so that it can be used on a frame. Used. Among these, a sheet obtained by sticking or impregnating a light-transmitting glass fiber fabric with a heat-transmitting light-transmitting resin is preferable because it is excellent in heat resistance, incombustibility, and antifouling properties.
Moreover, it is preferable that the fiberglass fabric has been subjected to fiber opening treatment. The fiber opening process is used to create a single yarn by twisting a large number of filaments in the warp and weft of a woven fabric. ) For example, when the glass fiber fabric composed of a large number of glass filaments is spread by applying a fiber opening treatment, the volume or area of the glass fiber fabric is increased. As a result, the total light transmittance can be improved and the parallel light transmittance can be reduced.
As the heat-resistant translucent resin, a fluororesin, a silicon resin, and the like are conceivable, but a fluororesin is preferable, and a soft fluororesin is most preferable.
更に、光拡散シートとして、ガラス繊維織物に軟質フッ素樹脂を積層したものを用いる場合、その軟質フッ素樹脂内に中空ガラスビーズを含有させておくことが好ましい。特に、軟質フッ素樹脂に、樹脂１００重量部当たり０．５〜５重量部の中空ガラスビーズ、好ましくは屈曲率１．５〜２．１、特に１．５２〜１．５３の、平均粒度８〜１２μｍ程度の中空ガラスビーズを含有させた場合に、遮蔽性と透光性のバランスの良い積層シートが得られる。
ガラス繊維織物に中空ビーズを含む軟質フッ素樹脂を積層した積層シートは、柔軟性、耐屈曲性、防汚性、耐熱性、光拡散性、不燃性に優れている。この積層シートを光拡散シートとして用いると、光源を良好に隠して均一に柔らかく光る照明面を形成できるとともに、耐熱性、不燃性に優れ、長期間安定して使用できるという利点が得られる。
Furthermore, when using the thing which laminated | stacked the soft fluororesin on the glass fiber fabric as a light-diffusion sheet, it is preferable to contain the hollow glass bead in the soft fluororesin. In particular, in soft fluororesin, 0.5 to 5 parts by weight of hollow glass beads per 100 parts by weight of resin, preferably 1.5 to 2.1, particularly 1.52 to 1.53, and an average particle size of 8 to When hollow glass beads of about 12 μm are contained, a laminated sheet having a good balance between shielding properties and translucency can be obtained.
A laminated sheet obtained by laminating a soft fluororesin containing hollow beads on a glass fiber fabric is excellent in flexibility, flex resistance, antifouling property, heat resistance, light diffusibility, and nonflammability. When this laminated sheet is used as a light diffusing sheet, it is possible to form an illumination surface that shines uniformly and softly while concealing a light source, and has the advantage of being excellent in heat resistance and nonflammability and being able to be used stably for a long period of time.
本発明の照明装置には、天井面に反射材が設けられていることが好ましい。反射材は、光源からの光を高効率で反射させる材料が用いられ且つ乱反射している。光源から照射される光は、光拡散シートに光源から直接到達するものと、光拡散シートと反対側に照射され、光拡散シートとは反対側に設けられた反射材によって乱反射されて光拡散シートに到達するものとがあり、光拡散シート面の照度は、光源からの直接光と反射材からの反射光とが合算されることによって光源からの直接光のみに比べて高くなると共に、光拡散シート面の照度の均整度が向上することとなる。 In the lighting device of the present invention, it is preferable that a reflecting material is provided on the ceiling surface. As the reflecting material, a material that reflects light from the light source with high efficiency is used and diffusely reflected. The light emitted from the light source is irradiated directly on the light diffusion sheet from the light source and on the opposite side of the light diffusion sheet, and is diffusely reflected by the reflecting material provided on the opposite side of the light diffusion sheet. The illuminance on the light diffusing sheet surface is higher than the direct light from the light source by adding the direct light from the light source and the reflected light from the reflecting material, and the light diffusion The uniformity of the illuminance on the sheet surface will be improved.
光を反射する反射材としては、光源からの光を高効率で乱反射する材料が用いられる。例えば、表面に凹凸を有するアルミニウム板、アルミニウム合金製のエンボスシート、エンボス加工されたアルミニウムフィルム、エンボス加工され且つ表面研磨された金属板、梨地加工された金属板などがあげられる。エンボス加工としては、例えば布目状や、直径２ｍｍ程度の球面状凹凸などがあげられるがこれに限定されるものではない。要は、反射材の表面全面に渡って乱反射し、高効率で反射することを満足するものであれば良い。反射材の反射率としては８０％以上あることが好ましい。反射材により反射された光が、乱反射光であることにより、光拡散シート面の縁部と中心部との照度の差を小さくできるとともに、光拡散シートを通して光源が視認し難くなるからである。反射材により反射された光が正反射光であると、光拡散シート面の縁部と中心部との照度の差を小さくできないばかりでなく、光拡散シートを通して光源が視認し易くなることになり、光源がぎらつくようになり、好ましくないものとなる。また反射材を用いることで、光源からの光を有効に利用することになり、省電力化を図ることも可能になる。 As the reflecting material that reflects light, a material that diffuses light from a light source with high efficiency is used. For example, an aluminum plate having an uneven surface, an embossed sheet made of an aluminum alloy, an embossed aluminum film, an embossed and surface-polished metal plate, a satin-finished metal plate, and the like. Examples of the embossing include, but are not limited to, a textured shape and a spherical unevenness having a diameter of about 2 mm. In short, any material may be used as long as it is diffusely reflected over the entire surface of the reflecting material and satisfies high-efficiency reflection. The reflectance of the reflector is preferably 80% or more. This is because the light reflected by the reflecting material is irregularly reflected light, so that the difference in illuminance between the edge portion and the central portion of the light diffusion sheet surface can be reduced, and the light source is difficult to visually recognize through the light diffusion sheet. If the light reflected by the reflecting material is specularly reflected light, the difference in illuminance between the edge and the center of the light diffusing sheet surface cannot be reduced, and the light source can be easily viewed through the light diffusing sheet. The light source becomes glaring, which is undesirable. Further, by using the reflecting material, light from the light source is effectively used, and power saving can be achieved.
以下、図面に示す本発明の好適な実施例を説明する。図１は、本発明を天井の面照明に適用した実施例による照明装置の概略斜視図である。図２は図１のＡ−Ａ矢視の概略断面図である。全体を参照符号１示す照明装置は、天井面２に取り付けられた多数の光源３と、その光源３を覆うように配置される照明カバー４と、光源３を取り付けた天井面２に設けられた反射材５等を備えている。光源３には蛍光管が用いられている。照明装置１は、天井面全体又は一部に面照明を行うことができるように配置されている。 Hereinafter, preferred embodiments of the present invention shown in the drawings will be described. FIG. 1 is a schematic perspective view of an illuminating device according to an embodiment in which the present invention is applied to ceiling surface illumination. FIG. 2 is a schematic sectional view taken along the line AA in FIG. The illuminating device generally indicated by reference numeral 1 is provided on a ceiling surface 2 to which a large number of light sources 3 attached to the ceiling surface 2, an illumination cover 4 arranged to cover the light sources 3, and the light source 3 are attached. The reflective material 5 etc. are provided. A fluorescent tube is used as the light source 3. The illuminating device 1 is arrange | positioned so that surface illumination can be performed to the whole ceiling surface or a part.
照明カバー４は、光を通すための大きい開口を形成した枠体６と、その枠体６の光源３とは反対側に開口を塞ぐように光拡散シート７が設けられ、光拡散シート７が張られた枠体６の反対側即ち枠体６の光源側には、ガラス繊維織物に樹脂を含浸した透光性シート８が固定され、光拡散シート７と枠体６と透光性シート８とによって密閉空間９が形成されている。光拡散シート７は、適度な張力を与えて枠体６に固定することで、光拡散シート７は平面を保ち、極めて外観のよい平坦な照明面を形成している。また、照明カバー４を固定フレーム１０に取付ける金具は図示されていないが、照明カバー４は固定フレーム１０に開閉できるように取付されている。
光拡散シート７としては、ガラス繊維織物に軟質フッ素樹脂を積層した積層シート（日東紡績株式会社製品番ＷＧ１８００Ｇ 厚み：０．２７ｍｍ、目付け：４２０ｇ／ｍ２ 、光透過率４５％）を用いた。
透光性シート８としては、ガラス繊維織物にビニルエステル樹脂を含浸させ、厚み：０．１２ｍｍ、目付け：１９３ｇ／ｍ２ 、光透過率：９０％としたものを用いた。
反射材５としては、全面に布目状のエンボス加工されたアルミニウムフィルムを用いた。
The illumination cover 4 is provided with a frame body 6 having a large opening for allowing light to pass through, and a light diffusion sheet 7 provided to close the opening on the opposite side of the light source 3 of the frame body 6. On the opposite side of the stretched frame 6, that is, on the light source side of the frame 6, a translucent sheet 8 in which a glass fiber fabric is impregnated with resin is fixed, and the light diffusion sheet 7, the frame 6, and the translucent sheet 8. Thus, a sealed space 9 is formed. The light diffusing sheet 7 is fixed to the frame 6 by applying an appropriate tension, so that the light diffusing sheet 7 maintains a flat surface and forms a flat illumination surface with a very good appearance. Further, although a metal fitting for attaching the illumination cover 4 to the fixed frame 10 is not shown, the illumination cover 4 is attached to the fixed frame 10 so that it can be opened and closed.
As the light diffusion sheet 7, a laminated sheet (Nitto Boseki Co., Ltd., product number WG1800G thickness: 0.27 mm, basis weight: 420 g / m 2 , light transmittance 45%) was used which was laminated on a glass fiber fabric.
As the translucent sheet 8, a glass fiber fabric impregnated with a vinyl ester resin and having a thickness of 0.12 mm, a basis weight of 193 g / m 2 , and a light transmittance of 90% was used.
As the reflector 5, an aluminum film having a textured embossing process on the entire surface was used.
実施例を目視で評価したところ、下方から見て虫の死骸による光拡散シート面の部分的黒ずみはなかった。また、光源からの光が十分に拡散され照明カバーの縁部と中心部との照度の差も小さく美観に優れたものであった。 As a result of visual evaluation of the examples, there was no partial darkening of the light diffusion sheet surface due to insect carcasses as seen from below. Further, the light from the light source was sufficiently diffused, and the difference in illuminance between the edge portion and the center portion of the illumination cover was small, and the appearance was excellent.
１ 照明装置
２ 天井面
３ 光源
４ 照明カバー
５ 反射材
６ 枠体
７ 光拡散シート
８ 透光性シート
９ 密閉空間
１０ 固定フレーム
１１ 隙間
DESCRIPTION OF SYMBOLS 1 Illuminating device 2 Ceiling surface 3 Light source 4 Illumination cover 5 Reflective material 6 Frame 7 Light diffusion sheet 8 Translucent sheet 9 Sealed space 10 Fixed frame 11 Gap
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| JP2005016374A JP4525360B2 (en) | 2005-01-25 | 2005-01-25 | Lighting device |
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| Application Number | Priority Date | Filing Date | Title |
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| JP2005016374A JP4525360B2 (en) | 2005-01-25 | 2005-01-25 | Lighting device |
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| Publication Number | Publication Date |
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| JP2006209978A JP2006209978A (en) | 2006-08-10 |
| JP4525360B2 true JP4525360B2 (en) | 2010-08-18 |
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| JP2005016374A Active JP4525360B2 (en) | 2005-01-25 | 2005-01-25 | Lighting device |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008150187A (en) * | 2006-12-19 | 2008-07-03 | Toshiba Elevator Co Ltd | Car illuminating device of elevator |
| JP2009021178A (en) * | 2007-07-13 | 2009-01-29 | Abc Trading Co Ltd | Frame for illumination |
| JP2010049837A (en) * | 2008-08-19 | 2010-03-04 | Nitto Boseki Co Ltd | Lighting apparatus |
| JP5402399B2 (en) * | 2009-08-25 | 2014-01-29 | 日東紡績株式会社 | Lighting device |
| FR2955207B1 (en) * | 2010-01-08 | 2012-02-10 | Saint Gobain Technical Fabrics | RADIATION COLLECTION DEVICE |
| JP5521793B2 (en) * | 2010-06-03 | 2014-06-18 | 日東紡績株式会社 | Lighting device |
| JP5897304B2 (en) * | 2011-11-08 | 2016-03-30 | 徳寿工業株式会社 | Lighting equipment for plant cultivation |
| JP2013033750A (en) * | 2012-10-05 | 2013-02-14 | Nitto Boseki Co Ltd | Lighting device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02111005U (en) * | 1989-02-21 | 1990-09-05 | ||
| JP2000106025A (en) * | 1998-09-29 | 2000-04-11 | Nitto Boseki Co Ltd | Lighting system |
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2005
- 2005-01-25 JP JP2005016374A patent/JP4525360B2/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02111005U (en) * | 1989-02-21 | 1990-09-05 | ||
| JP2000106025A (en) * | 1998-09-29 | 2000-04-11 | Nitto Boseki Co Ltd | Lighting system |
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