WO2009107193A1 - Illuminating method - Google Patents

Illuminating method Download PDF

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Publication number
WO2009107193A1
WO2009107193A1 PCT/JP2008/053203 JP2008053203W WO2009107193A1 WO 2009107193 A1 WO2009107193 A1 WO 2009107193A1 JP 2008053203 W JP2008053203 W JP 2008053203W WO 2009107193 A1 WO2009107193 A1 WO 2009107193A1
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WO
WIPO (PCT)
Prior art keywords
light
light source
source lamp
inclined portion
range
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PCT/JP2008/053203
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French (fr)
Japanese (ja)
Inventor
三代次 石橋
Original Assignee
テスコ・エコライティング株式会社
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by テスコ・エコライティング株式会社 filed Critical テスコ・エコライティング株式会社
Priority to PCT/JP2008/053203 priority Critical patent/WO2009107193A1/en
Priority to JP2010500470A priority patent/JPWO2009107193A1/en
Priority to TW097112326A priority patent/TW200936939A/en
Publication of WO2009107193A1 publication Critical patent/WO2009107193A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/09—Optical design with a combination of different curvatures

Definitions

  • the present invention mainly relates to a lighting method using a lighting fixture installed on a ceiling of a building or outdoors, and particularly relates to a shape setting method for a reflector of the lighting fixture.
  • a hemispherical reflector is generally used as a reflector of a lighting fixture having a light source lamp and a reflector that reflects light from the light source lamp.
  • the light from the light source lamps interferes with each other and does not reach far away, so there is no problem when illuminating the lower part of about several tens of centimeters like a desk lamp on a desk. Or, if you try to illuminate the floor below from a height of about 3-7m or more like a downlight installed on the ceiling of a business, there is a problem that the illuminance is insufficient.
  • the hemispherical reflector there are also improvements such as providing fine irregularities on the upper surface of the inner surface and irregularly reflecting light to improve illuminance, but this also tries to illuminate the floor below the altitude There is a problem that the illuminance is insufficient.
  • the inventor of the present application previously proposed a reflection plate in which the inner reflection surface is formed of three or more inclined portions with different inclination angles in Patent Document 1. According to this multistage reflector, the light from the light source lamp can be reflected in multiple directions, and it becomes possible to illuminate a specified range by controlling the reflection direction.
  • Patent Document 1 does not disclose a specific method for controlling the light reflection direction from the light source lamp, and the light reflection direction must be controlled by trial and error.
  • JP 2005-346968 A JP 2005-346968 A
  • the problem to be solved by the present invention is that when the light is reflected and illuminated by the multistage reflector disclosed in Patent Document 1, the light can be appropriately reflected according to the range to be illuminated. It is to provide a method for
  • the present invention has a light source lamp and a shade-shaped reflecting plate whose inner surface is a reflecting surface for reflecting light from the light source lamp, and the reflecting surface of the reflecting plate has three or more upper and lower stages each having a different inclination angle.
  • each inclined portion is formed by a combination of a plurality of planes, and when illuminating a specified range in an intensive manner, the angle formed by the upper and lower inclined portions
  • the angle formed by the upper and lower inclined parts is a combination of less than 180 ° and more than 180 °. It is.
  • the combination of angles formed by the upper and lower inclined portions can be changed according to the range of the illumination area, in other words, depending on whether the illumination is concentrated or diffused (divergent).
  • the angles formed by the upper and lower inclined portions are all less than 180 °.
  • the reflector is formed as a whole in a shade shape, and the light reflection directions are aligned, so that the specified range can be intensively illuminated. .
  • the angle formed by the upper and lower inclined parts is a combination of less than 180 ° and more than 180 °, the reflection direction of light by each inclined part will be greatly different, and the reflected light will diffuse and illuminate a wide area Can do.
  • the illumination range can be controlled by adjusting the vertical length of the inclined portion. That is, since the angle formed with the light source lamp varies depending on the vertical position even in the same inclined portion, the light is reflected over a wide range if the vertical length of the inclined portion is long. On the other hand, if the length of the inclined portion in the vertical direction is short, light is likely to be reflected in a certain direction. Therefore, when illuminating the specified range in a concentrated manner, the length of the inclined portion in the vertical direction is made shorter than when diffusing light from the light source lamp to illuminate a wider range than the specified range.
  • the reflecting plate of the luminaire used in the present invention is formed of a combination of a plurality of flat surfaces, so that the cross-sectional shape is necessarily polygonal, but reflects light uniformly.
  • a regular polygon is preferable at any location, and a regular hexagon to a regular 24-gon is more preferable.
  • the present invention light can be appropriately reflected according to the range to be illuminated, and the light from the light source lamp can be effectively used without waste according to the range to be illuminated. Therefore, the number of light source lamps can be reduced and the output can be reduced as compared with the prior art. As a result, the amount of power used can be greatly reduced, the amount of heat generated can be reduced, the air conditioning efficiency of the building can be improved, and in turn, it can contribute to the reduction of CO 2 emissions.
  • FIG. 1 is a cross-sectional view showing a first embodiment of a downlight to which the present invention is applied
  • FIG. 2 shows a reflector used in the downlight of FIG. 1, (a) is a bottom view, and (b) is a front view.
  • FIG. 1 is a cross-sectional view showing a first embodiment of a downlight to which the present invention is applied
  • FIG. 2 shows a reflector used in the downlight of FIG. 1, (a) is a bottom view, and (b) is a front view.
  • FIG. 1 is a cross-sectional view showing a first embodiment of a downlight to which the present invention is applied
  • FIG. 2 shows a reflector used in the downlight of FIG. 1, (a) is a bottom view, and (b) is a front view.
  • FIG. 1 is a cross-sectional view showing a first embodiment of a downlight to which the present invention is applied
  • FIG. 2 shows a reflector used in the downlight of FIG. 1, (a)
  • a downlight 10 shown in FIG. 1 includes a light source lamp 1 made of a metal halide lamp (CDM), a reflection plate 2 for reflecting light from the light source lamp 1, and a main body 3 for fixing the reflection plate 2.
  • a light source lamp 1 made of a metal halide lamp (CDM)
  • a reflection plate 2 for reflecting light from the light source lamp 1
  • a main body 3 for fixing the reflection plate 2.
  • the light source lamp 1 is mounted on the top plate portion of the reflector 2 and is mounted in a socket (not shown) and is located in the reflector 2.
  • the reflecting plate 2 has a cap shape with a regular hexagonal bottom surface shape (transverse cross-sectional shape), and the reflecting surface on the inner surface has first inclined portions 2a and second inclined portions having different inclination angles.
  • This is a three-stage structure composed of 2b and a third inclined portion 2c.
  • These inclined portions 2a to 2c are formed by a combination of a plurality of planes formed by bending one plane.
  • the angle ⁇ formed by the first inclined portion 2a and the second inclined portion 2b and the angle ⁇ formed by the second inclined portion 2b and the third inclined portion 2c are both set to be less than 180 °.
  • the reflecting plate 2 has a light-shade shape as a whole, and the light reflection directions are aligned, so that a specified range can be intensively illuminated.
  • the present embodiment is suitable for an application in which the light from the light source lamp 1 is focused and intensively illuminated.
  • the light from the light source lamp 1 can be used effectively without waste. Therefore, the number of light source lamps can be reduced and the output can be reduced as compared with the prior art.
  • the material of the reflecting plate 2 is aluminum, and the reflecting surface on the inner surface is mirror-like by coating the surface of aluminum with titanium / silicon.
  • the material of the reflecting plate is not limited to aluminum, and the inner surface may be mirror-finished using, for example, a metal plate.
  • the main-body part 3 has the ring-shaped support member 3a which protruded outward on the outer periphery of the lower end part, By mounting this support member 3a on the back surface of the ceiling T, it is on the back surface of the ceiling T The entire downlight 10 is suspended.
  • FIG. 3 is a cross-sectional view showing a second embodiment of a downlight to which the present invention is applied
  • FIG. 4 shows a reflector used in the downlight of FIG. 3, (a) is a bottom view, and (b) is a front view.
  • FIG. 3 and 4 the same or corresponding components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
  • the reflecting plate 2 has four upper and lower stages, each of which includes a first inclined portion 2a, a second inclined portion 2b, a third inclined portion 2c, and a fourth inclined portion 2d having different inclination angles.
  • the structure is used.
  • the angle ⁇ formed by the first inclined portion 2a and the second inclined portion 2b is less than 180 °
  • the angle ⁇ formed by the second inclined portion 2b and the third inclined portion 2c exceeds 180 °
  • the third inclined portion 2c and the fourth inclined portion 2c is set to be less than 180 °.
  • the angle formed by the upper and lower inclined portions is a combination of less than 180 ° and more than 180 °, the light reflection directions by the inclined portions are greatly different. Compared with the embodiment, the reflected light is diffused and a wide area can be illuminated.
  • the lengths of the second and fourth inclined portions 2b, 2d are longer than any of the inclined portions in the first embodiment. Even in the same inclined portion, the angle formed with the light source lamp 1 differs depending on the position in the vertical direction, so that if the vertical length of the inclined portion is long, light is reflected over a wide range. Also from this point, this embodiment is suitable for illuminating a wide area.
  • the present embodiment is used to illuminate a wide area by arranging a plurality of downlights 10 linearly, and illuminates a region immediately below the downlight 10 with reflected light from the first inclined portion 2a. Then, the intermediate area with the adjacent downlight is illuminated with the reflected light from the second inclined portion 2b, the area immediately under the adjacent downlight is illuminated with the reflected light from the second inclined portion 2c, and the fourth inclined The far part is illuminated with the reflected light from the part 2d.
  • the reflector 2 since the reflector 2 is set so as to illuminate a wide range, it can be illuminated using the interaction with the downlights adjacent to the left and right, Even if the installation interval of the downlight is made longer than before or the output is reduced, it is possible to obtain the same illuminance as before.
  • FIG. 5 is a sectional view showing a third embodiment of a downlight to which the present invention is applied
  • FIG. 6 shows a reflector used in the downlight of FIG. 5, (a) is a bottom view, and (b) is a front view.
  • FIG. 5 and 6 the same or corresponding components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
  • the reflecting surface of the reflecting plate 2 has a first inclined portion 2a, a second inclined portion 2b, a third inclined portion 2c, a fourth inclined portion 2d, and a fifth inclined portion having different inclination angles.
  • the upper and lower five-stage structure composed of 2e is used.
  • the angle ⁇ formed by the first inclined portion 2a and the second inclined portion 2b is less than 180 °
  • the angle ⁇ formed by the second inclined portion 2b and the third inclined portion 2c exceeds 180 °
  • the third inclined portion 2c and the fourth inclined portion 2c is set to be less than 180 °
  • the angle ⁇ formed between the fourth inclined portion 2d and the fifth inclined portion 2e is set to be less than 180 °.
  • the angle formed by the upper and lower inclined portions is a combination of less than 180 ° and more than 180 °, the reflected light is diffused compared to the first embodiment in which all are less than 180 °, A wide range can be illuminated.
  • the angle formed by the upper and lower inclined portions is set to be close to 180 °, and is set so as to illuminate a narrower range than the second embodiment. That is, this embodiment is positioned between the first embodiment and the third embodiment.
  • the light from the light source lamp can be used effectively without waste.
  • the present invention can be used not only for downlights mounted on a ceiling, but also for luminaires mounted outdoors, on wall surfaces, and floor surfaces.
  • FIG. 1 It is sectional drawing which shows 1st Example of the downlight to which this invention is applied.
  • the reflector used for the downlight of FIG. 1 is shown, (a) is a bottom view, (b) is a front view. It is sectional drawing which shows 2nd Example of the downlight to which this invention is applied.
  • the reflector used for the downlight of FIG. 3 is shown, (a) is a bottom view, (b) is a front view. It is sectional drawing which shows 3rd Example of the downlight to which this invention is applied.
  • the reflector used for the downlight of FIG. 5 is shown, (a) is a bottom view, (b) is a front view.

Abstract

An illuminating method which allows light to be reflected appropriately according to a range requiring illumination. The illuminating method uses a lighting apparatus which includes a light source lamp (1) and a straw hat-shaped reflective plate (2) having the inner surface of a reflective plane for reflecting light from the light source lamp (1), wherein the reflective plane on the reflective plate (2) is formed of more than three-stage top and bottom inclined parts (2a) to (2c) with respectively different tilt angles, and each of the inclined parts (2a) to (2c) is formed in combination of a plurality of planes. When a specified range is illuminated in a focused manner, all the angles α to γ formed with each of the top and bottom inclined parts are less than 180 degrees. When the light from the light source lamp is diffused to illuminate a range wider than the specified range, the angles formed with each of the top and bottom inclined parts are combinations of less than 180 degrees and more than 180 degrees.

Description

照明方法Lighting method
　本発明は、おもに建屋の天井や屋外に取り付けられて設置される照明器具による照明方法に関し、とくに照明器具の反射板の形状設定方法に関する。 The present invention mainly relates to a lighting method using a lighting fixture installed on a ceiling of a building or outdoors, and particularly relates to a shape setting method for a reflector of the lighting fixture.
　従来、光源ランプと光源ランプの光を反射させる反射板とを有する照明器具の反射板としては、一般的に半球状のものが使用されている。 Conventionally, a hemispherical reflector is generally used as a reflector of a lighting fixture having a light source lamp and a reflector that reflects light from the light source lamp.
　ただし、半球状の反射板では、光源ランプの光が相互干渉して遠くまで光が到達しないため、机上の電気スタンド等のように数十ｃｍ程度の下方を照明する場合は問題ないが、工場や事業所の天井に設置されるダウンライトのように３～７ｍ程度あるいはそれ以上の高所から下方の床面を照明しようとすると、照度が不足するという問題がある。また、半球状の反射板では、その内面上部に細かな凹凸を設け、光を乱反射させて照度を向上させるといった改良も見られるが、これによっても高所から下方の床面を照明しようとすると、照度が不足するという問題がある。 However, with a hemispherical reflector, the light from the light source lamps interferes with each other and does not reach far away, so there is no problem when illuminating the lower part of about several tens of centimeters like a desk lamp on a desk. Or, if you try to illuminate the floor below from a height of about 3-7m or more like a downlight installed on the ceiling of a business, there is a problem that the illuminance is insufficient. In addition, in the hemispherical reflector, there are also improvements such as providing fine irregularities on the upper surface of the inner surface and irregularly reflecting light to improve illuminance, but this also tries to illuminate the floor below the altitude There is a problem that the illuminance is insufficient.
　これに対して、反射板の内面を多面体として、反射される光の到達性を向上させることが考えられたが、単一の傾斜角度を有する１段の多面体では、光の反射方向を制御することができないため、広範囲を均一に照明することはできない。 On the other hand, it has been considered to improve the reachability of the reflected light by using the inner surface of the reflecting plate as a polyhedron, but in the single-stage polyhedron having a single inclination angle, the light reflection direction is controlled. It is not possible to illuminate a wide area uniformly.
　そこで、本願発明者は、先に特許文献１において、内面の反射面をそれぞれ傾斜角度の異なる上下３段以上の傾斜部から形成した反射板を提案した。この多段構造の反射板によれば、光源ランプからの光を多方向に反射させることができ、その反射方向を制御することにより、規定の範囲を照明することが可能となった。 Therefore, the inventor of the present application previously proposed a reflection plate in which the inner reflection surface is formed of three or more inclined portions with different inclination angles in Patent Document 1. According to this multistage reflector, the light from the light source lamp can be reflected in multiple directions, and it becomes possible to illuminate a specified range by controlling the reflection direction.
　しかし、特許文献１には、光源ランプからの光の反射方向の具体的な制御方法については開示されておらず、試行錯誤によって光の反射方向を制御しなければならなかった。
特開２００５－３４６９６８号公報 However, Patent Document 1 does not disclose a specific method for controlling the light reflection direction from the light source lamp, and the light reflection direction must be controlled by trial and error.
JP 2005-346968 A
　本発明が解決しようとする課題は、上記特許文献１に開示された多段構造の反射板によって光を反射させて照明するにあたり、照明すべき範囲に応じて適切に光を反射させることができるようにするための方法を提供することにある。 The problem to be solved by the present invention is that when the light is reflected and illuminated by the multistage reflector disclosed in Patent Document 1, the light can be appropriately reflected according to the range to be illuminated. It is to provide a method for
　本発明は、光源ランプと、光源ランプの光を反射させるために内面を反射面とした笠状の反射板とを有し、前記反射板の反射面が、それぞれ傾斜角度の異なる上下３段以上の傾斜部から形成され、各傾斜部が複数の平面の組み合わせにより形成されている照明器具による照明方法であって、規定の範囲を集中的に照明する場合は、上下の傾斜部どうしのなす角度をすべて１８０°未満とし、前記規定の範囲よりも広範囲を照明するために光源ランプの光を拡散させる場合は、上下の傾斜部どうしのなす角度を１８０°未満と１８０°超の組み合わせとするものである。 The present invention has a light source lamp and a shade-shaped reflecting plate whose inner surface is a reflecting surface for reflecting light from the light source lamp, and the reflecting surface of the reflecting plate has three or more upper and lower stages each having a different inclination angle. Is an illumination method using a luminaire in which each inclined portion is formed by a combination of a plurality of planes, and when illuminating a specified range in an intensive manner, the angle formed by the upper and lower inclined portions When the light from the light source lamp is diffused to illuminate a wider range than the prescribed range, the angle formed by the upper and lower inclined parts is a combination of less than 180 ° and more than 180 °. It is.
　このように、本発明では、照明すべき範囲の広狭、言い換えれば照明を集中的に行うか拡散（発散）的に行うに応じて、上下の傾斜部どうしのなす角度の組み合わせを変化させることを特徴とする。すなわち、規定の範囲を集中的に照明する場合は、上下の傾斜部どうしのなす角度をすべて１８０°未満とする。このように上下の傾斜部どうしのなす角度をすべて１８０°未満とすると、反射板が全体としてまとまった笠状となり、光の反射方向が揃うので、規定の範囲を集中的に照明することができる。 As described above, according to the present invention, the combination of angles formed by the upper and lower inclined portions can be changed according to the range of the illumination area, in other words, depending on whether the illumination is concentrated or diffused (divergent). Features. That is, when illuminating a specified range in a concentrated manner, the angles formed by the upper and lower inclined portions are all less than 180 °. As described above, when the angles formed by the upper and lower inclined portions are all less than 180 °, the reflector is formed as a whole in a shade shape, and the light reflection directions are aligned, so that the specified range can be intensively illuminated. .
　一方、上下の傾斜部どうしのなす角度を１８０°未満と１８０°超の組み合わせとすると、各傾斜部による光の反射方向が大きく異なることになり、反射した光が拡散し、広範囲を照明することができる。 On the other hand, if the angle formed by the upper and lower inclined parts is a combination of less than 180 ° and more than 180 °, the reflection direction of light by each inclined part will be greatly different, and the reflected light will diffuse and illuminate a wide area Can do.
　また、傾斜部の上下方向の長さを調整することによっても、照明範囲を制御することができる。すなわち、同じ傾斜部であっても上下方向の位置によって光源ランプとなす角度が異なるため、傾斜部の上下方向の長さが長いと広範囲に光が反射される。これに対して、傾斜部の上下方向の長さが短いと、一定方向に光が反射されやすい。したがって、規定の範囲を集中的に照明する場合は、前記規定の範囲よりも広範囲を照明するために光源ランプの光を拡散させる場合に比べ、傾斜部の上下方向の長さを短くする。 Also, the illumination range can be controlled by adjusting the vertical length of the inclined portion. That is, since the angle formed with the light source lamp varies depending on the vertical position even in the same inclined portion, the light is reflected over a wide range if the vertical length of the inclined portion is long. On the other hand, if the length of the inclined portion in the vertical direction is short, light is likely to be reflected in a certain direction. Therefore, when illuminating the specified range in a concentrated manner, the length of the inclined portion in the vertical direction is made shorter than when diffusing light from the light source lamp to illuminate a wider range than the specified range.
　ここで、本発明において使用する照明器具の反射板は、各傾斜部が複数の平面の組み合わせにより形成されていることから、横断面形状は必然的に多角形となるが、均一に光を反射させるには、いずれの箇所においても正多角形であることが好ましく、正１６角形～正２４角形であることがより好ましい。 Here, the reflecting plate of the luminaire used in the present invention is formed of a combination of a plurality of flat surfaces, so that the cross-sectional shape is necessarily polygonal, but reflects light uniformly. In order to achieve this, a regular polygon is preferable at any location, and a regular hexagon to a regular 24-gon is more preferable.
　本発明によれば、照明すべき範囲に応じて適切に光を反射させることができるようになり、照明すべき範囲に応じて光源ランプの光を無駄なく有効に利用することができる。したがって、従来に比べ、光源ランプの個数削減や小出力化が可能となる。これにより、使用電力量を大幅に削減でき、発熱量が減少して、建屋内の空調効率等を向上させることができ、ひいてはＣＯ２排出量の削減に寄与できる。 According to the present invention, light can be appropriately reflected according to the range to be illuminated, and the light from the light source lamp can be effectively used without waste according to the range to be illuminated. Therefore, the number of light source lamps can be reduced and the output can be reduced as compared with the prior art. As a result, the amount of power used can be greatly reduced, the amount of heat generated can be reduced, the air conditioning efficiency of the building can be improved, and in turn, it can contribute to the reduction of CO 2 emissions.
　以下、本発明をダウンライトに適用した実施例に基づき本発明の実施の形態を説明する。 Hereinafter, an embodiment of the present invention will be described based on an example in which the present invention is applied to a downlight.
　図１は、本発明を適用したダウンライトの第１実施例を示す断面図、図２は、図１のダウンライトに使用した反射板を示し、（ａ）は底面図、（ｂ）は正面図である。 1 is a cross-sectional view showing a first embodiment of a downlight to which the present invention is applied, FIG. 2 shows a reflector used in the downlight of FIG. 1, (a) is a bottom view, and (b) is a front view. FIG.
　図１に示すダウンライト１０は、メタルハライドランプ（ＣＤＭ）からなる光源ランプ１と、光源ランプ１の光を反射させるための反射板２と、反射板２を固定する本体部３を備える。 A downlight 10 shown in FIG. 1 includes a light source lamp 1 made of a metal halide lamp (CDM), a reflection plate 2 for reflecting light from the light source lamp 1, and a main body 3 for fixing the reflection plate 2.
　光源ランプ１は、反射板２の天板部分に取りけられ、図示しないソケットに装着されて反射板２内に位置している。 The light source lamp 1 is mounted on the top plate portion of the reflector 2 and is mounted in a socket (not shown) and is located in the reflector 2.
　反射板２は、図２に示すように底面形状（横断面形状）が正１６角形の笠状であり、その内面の反射面は、それぞれ傾斜角度の異なる第１傾斜部２ａ、第２傾斜部２ｂ及び第３傾斜部２ｃからなる上下３段構造である。これらの傾斜部２ａ～２ｃは、１つの平面を折り曲げることにより形成された複数の平面の組み合わせにより形成されている。そして、第１傾斜部２ａと第２傾斜部２ｂのなす角度α、及びと第２傾斜部２ｂと第３傾斜部２ｃのなす角度βはいずれも１８０°未満に設定されている。これによって、反射板２は、図１及び図２に示すように、全体としてまとまった笠状となり、光の反射方向が揃うので、規定の範囲を集中的に照明することができる。 As shown in FIG. 2, the reflecting plate 2 has a cap shape with a regular hexagonal bottom surface shape (transverse cross-sectional shape), and the reflecting surface on the inner surface has first inclined portions 2a and second inclined portions having different inclination angles. This is a three-stage structure composed of 2b and a third inclined portion 2c. These inclined portions 2a to 2c are formed by a combination of a plurality of planes formed by bending one plane. The angle α formed by the first inclined portion 2a and the second inclined portion 2b and the angle β formed by the second inclined portion 2b and the third inclined portion 2c are both set to be less than 180 °. As a result, as shown in FIGS. 1 and 2, the reflecting plate 2 has a light-shade shape as a whole, and the light reflection directions are aligned, so that a specified range can be intensively illuminated.
　すなわち、本実施例は、光源ランプ１の光を集束させて集中的に照明する用途に適しており、このような用途として、光源ランプ１の光を無駄なく有効に利用することができる。したがって、従来に比べ、光源ランプの個数削減や小出力化が可能となる。 That is, the present embodiment is suitable for an application in which the light from the light source lamp 1 is focused and intensively illuminated. As such an application, the light from the light source lamp 1 can be used effectively without waste. Therefore, the number of light source lamps can be reduced and the output can be reduced as compared with the prior art.
　なお、本実施例において反射板２の素材はアルミニウムであり、その内面の反射面はアルミニウムの表面にチタン・シリコンをコーティングすることによって鏡面状としている。反射板の素材としてはアルミニウムに限られず、例えば金属板を使用して内面を鏡面加工してもよい。 In this embodiment, the material of the reflecting plate 2 is aluminum, and the reflecting surface on the inner surface is mirror-like by coating the surface of aluminum with titanium / silicon. The material of the reflecting plate is not limited to aluminum, and the inner surface may be mirror-finished using, for example, a metal plate.
　また、本体部３は、その下端部外周に外方に突出したリング状の支持部材３ａを有しており、この支持部材３ａを天井Ｔの裏面に載置することにより、天井Ｔの裏面にダウンライト１０全体が懸架される。 Moreover, the main-body part 3 has the ring-shaped support member 3a which protruded outward on the outer periphery of the lower end part, By mounting this support member 3a on the back surface of the ceiling T, it is on the back surface of the ceiling T The entire downlight 10 is suspended.
　図３は、本発明を適用したダウンライトの第２実施例を示す断面図、図４は、図３のダウンライトに使用した反射板を示し、（ａ）は底面図、（ｂ）は正面図である。図３及び図４において第１実施例と同一又は対応する構成には同一の符号を付し、その説明を省略する。 3 is a cross-sectional view showing a second embodiment of a downlight to which the present invention is applied, FIG. 4 shows a reflector used in the downlight of FIG. 3, (a) is a bottom view, and (b) is a front view. FIG. 3 and 4, the same or corresponding components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
　本実施例は、反射板２として、その内面の反射面が、それぞれ傾斜角度の異なる第１傾斜部２ａ、第２傾斜部２ｂ、第３傾斜部２ｃ及び第４傾斜部２ｄからなる上下４段構造のもの用いたものである。そして、第１傾斜部２ａと第２傾斜部２ｂのなす角度αは１８０°未満、第２傾斜部２ｂと第３傾斜部２ｃのなす角度βは１８０°超、第３傾斜部２ｃと第４傾斜部２ｄのなす角度γは１８０°未満に設定されている。 In this embodiment, the reflecting plate 2 has four upper and lower stages, each of which includes a first inclined portion 2a, a second inclined portion 2b, a third inclined portion 2c, and a fourth inclined portion 2d having different inclination angles. The structure is used. The angle α formed by the first inclined portion 2a and the second inclined portion 2b is less than 180 °, the angle β formed by the second inclined portion 2b and the third inclined portion 2c exceeds 180 °, and the third inclined portion 2c and the fourth inclined portion 2c. The angle γ formed by the inclined portion 2d is set to be less than 180 °.
　このように、上下の傾斜部どうしのなす角度を１８０°未満と１８０°超の組み合わせとすると、各傾斜部による光の反射方向が大きく異なることになり、すべてを１８０°未満とした第１の実施例に比べ、反射した光が拡散し、広範囲を照明することができる。 As described above, when the angle formed by the upper and lower inclined portions is a combination of less than 180 ° and more than 180 °, the light reflection directions by the inclined portions are greatly different. Compared with the embodiment, the reflected light is diffused and a wide area can be illuminated.
　さらに、本実施例では、第２及び第４傾斜部２ｂ，２ｄの長さを、第１実施例における各傾斜部のいずれよりも長くしている。同じ傾斜部であっても上下方向の位置によって光源ランプ１となす角度が異なるため、傾斜部の上下方向の長さが長いと広範囲に光が反射される。この点からも、本実施例は、広範囲を照明するのに適している。 Furthermore, in this embodiment, the lengths of the second and fourth inclined portions 2b, 2d are longer than any of the inclined portions in the first embodiment. Even in the same inclined portion, the angle formed with the light source lamp 1 differs depending on the position in the vertical direction, so that if the vertical length of the inclined portion is long, light is reflected over a wide range. Also from this point, this embodiment is suitable for illuminating a wide area.
　具体的には本実施例は、ダウンライト１０を直線的に複数配置して広範囲を照明するために使用され、第１傾斜部２ａからの反射光でそのダウンライト１０の直下近傍の領域を照明し、第２傾斜部２ｂからの反射光で隣接するダウンライトとの中間領域を照明し、第２傾斜部２ｃからの反射光で隣接するダウンライトの直下近傍の領域を照明し、第４傾斜部２ｄからの反射光で遠方を照明するようにしている。このように、本実施例では、その反射板２が広範囲を照明することができるように設定されていることから、左右に隣接するダウンライトとの相互作用を利用して照明することができ、従来よりもダウンライトの設置間隔を長くしたり、小出力化したりしても従来と同様の照度を得ることが可能となる。 Specifically, the present embodiment is used to illuminate a wide area by arranging a plurality of downlights 10 linearly, and illuminates a region immediately below the downlight 10 with reflected light from the first inclined portion 2a. Then, the intermediate area with the adjacent downlight is illuminated with the reflected light from the second inclined portion 2b, the area immediately under the adjacent downlight is illuminated with the reflected light from the second inclined portion 2c, and the fourth inclined The far part is illuminated with the reflected light from the part 2d. Thus, in this embodiment, since the reflector 2 is set so as to illuminate a wide range, it can be illuminated using the interaction with the downlights adjacent to the left and right, Even if the installation interval of the downlight is made longer than before or the output is reduced, it is possible to obtain the same illuminance as before.
　図５は、本発明を適用したダウンライトの第３実施例を示す断面図、図６は、図５のダウンライトに使用した反射板を示し、（ａ）は底面図、（ｂ）は正面図である。図５及び図６において第１実施例と同一又は対応する構成には同一の符号を付し、その説明を省略する。 5 is a sectional view showing a third embodiment of a downlight to which the present invention is applied, FIG. 6 shows a reflector used in the downlight of FIG. 5, (a) is a bottom view, and (b) is a front view. FIG. 5 and 6, the same or corresponding components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
　本実施例は、反射板２として、その内面の反射面が、それぞれ傾斜角度の異なる第１傾斜部２ａ、第２傾斜部２ｂ、第３傾斜部２ｃ、第４傾斜部２ｄ及び第５傾斜部２ｅからなる上下５段構造のもの用いたものである。そして、第１傾斜部２ａと第２傾斜部２ｂのなす角度αは１８０°未満、第２傾斜部２ｂと第３傾斜部２ｃのなす角度βは１８０°超、第３傾斜部２ｃと第４傾斜部２ｄのなす角度γは１８０°未満、第４傾斜部２ｄと第５傾斜部２ｅのなす角度δは１８０°未満に設定されている。 In this embodiment, the reflecting surface of the reflecting plate 2 has a first inclined portion 2a, a second inclined portion 2b, a third inclined portion 2c, a fourth inclined portion 2d, and a fifth inclined portion having different inclination angles. The upper and lower five-stage structure composed of 2e is used. The angle α formed by the first inclined portion 2a and the second inclined portion 2b is less than 180 °, the angle β formed by the second inclined portion 2b and the third inclined portion 2c exceeds 180 °, and the third inclined portion 2c and the fourth inclined portion 2c. The angle γ formed by the inclined portion 2d is set to be less than 180 °, and the angle δ formed between the fourth inclined portion 2d and the fifth inclined portion 2e is set to be less than 180 °.
　本実施例でも、上下の傾斜部どうしのなす角度を１８０°未満と１８０°超の組み合わせとしていることから、すべてを１８０°未満とした第１の実施例に比べ、反射した光が拡散し、広範囲を照明することができる。ただし、本実施例では、上下の傾斜部どうしのなす角度を１８０°近くに設定し、第２実施例よりは狭い範囲を照明するように設定されている。すなわち、本実施例は、第１実施例と第３実施例の中間的な位置付けのものである。 Even in this embodiment, since the angle formed by the upper and lower inclined portions is a combination of less than 180 ° and more than 180 °, the reflected light is diffused compared to the first embodiment in which all are less than 180 °, A wide range can be illuminated. However, in this embodiment, the angle formed by the upper and lower inclined portions is set to be close to 180 °, and is set so as to illuminate a narrower range than the second embodiment. That is, this embodiment is positioned between the first embodiment and the third embodiment.
　以上のように、本発明にしたがって反射板２における上下の傾斜部どうしのなす角度の組み合わせを設定すれば、照明すべき範囲に応じて適切に光を反射させることができるようになり、照明すべき範囲に応じて光源ランプの光を無駄なく有効に利用することができる。 As described above, if a combination of angles formed by the upper and lower inclined portions of the reflector 2 is set according to the present invention, light can be appropriately reflected according to the range to be illuminated, and the illumination is performed. Depending on the power range, the light from the light source lamp can be used effectively without waste.
　本発明は、天井に取り付けられるダウンライトだけでなく、屋外や、壁面、床面に取り付ける照明器具にも利用可能である。 The present invention can be used not only for downlights mounted on a ceiling, but also for luminaires mounted outdoors, on wall surfaces, and floor surfaces.
本発明を適用したダウンライトの第１実施例を示す断面図である、It is sectional drawing which shows 1st Example of the downlight to which this invention is applied. 図１のダウンライトに使用した反射板を示し、（ａ）は底面図、（ｂ）は正面図である。The reflector used for the downlight of FIG. 1 is shown, (a) is a bottom view, (b) is a front view. 本発明を適用したダウンライトの第２実施例を示す断面図である、It is sectional drawing which shows 2nd Example of the downlight to which this invention is applied. 図３のダウンライトに使用した反射板を示し、（ａ）は底面図、（ｂ）は正面図である。The reflector used for the downlight of FIG. 3 is shown, (a) is a bottom view, (b) is a front view. 本発明を適用したダウンライトの第３実施例を示す断面図である、It is sectional drawing which shows 3rd Example of the downlight to which this invention is applied. 図５のダウンライトに使用した反射板を示し、（ａ）は底面図、（ｂ）は正面図である。The reflector used for the downlight of FIG. 5 is shown, (a) is a bottom view, (b) is a front view.
符号の説明Explanation of symbols
　１　光源ランプ
　２　反射板
　２ａ　第１傾斜部
　２ｂ　第２傾斜部
　２ｃ　第３傾斜部
　２ｄ　第４傾斜部
　２ｅ　第５傾斜部
　３　本体部
　３ａ　支持部材
　１０　ダウンライト DESCRIPTION OF SYMBOLS 1 Light source lamp 2 Reflector 2a 1st inclination part 2b 2nd inclination part 2c 3rd inclination part 2d 4th inclination part 2e 5th inclination part 3 Main-body part 3a Support member 10 Downlight

Claims (3)

  1. 　光源ランプと、光源ランプの光を反射させるために内面を反射面とした笠状の反射板とを有し、前記反射板の反射面が、それぞれ傾斜角度の異なる上下３段以上の傾斜部から形成され、各傾斜部が複数の平面の組み合わせにより形成されている照明器具による照明方法であって、
    　規定の範囲を集中的に照明する場合は、上下の傾斜部どうしのなす角度をすべて１８０°未満とし、
    　前記規定の範囲よりも広範囲を照明するために光源ランプの光を拡散させる場合は、上下の傾斜部どうしのなす角度を１８０°未満と１８０°超の組み合わせとする照明方法。     A light source lamp, and a shade-shaped reflecting plate having an inner surface as a reflecting surface for reflecting light from the light source lamp, and the reflecting surface of the reflecting plate is formed from three or more inclined portions with different inclination angles. A lighting method by a lighting fixture, wherein each inclined portion is formed by a combination of a plurality of planes,
    When illuminating the specified range intensively, the angle between the upper and lower inclined parts should be less than 180 °,
    When diffusing light from a light source lamp in order to illuminate a wider area than the specified range, an illumination method in which an angle formed between upper and lower inclined portions is a combination of less than 180 ° and more than 180 °.
  2. 　規定の範囲を集中的に照明する場合は、前記規定の範囲よりも広範囲を照明するために光源ランプの光を拡散させる場合に比べ、傾斜部の上下方向の長さを短くする請求項１に記載の照明方法。 The length in the vertical direction of the inclined portion is shortened when illuminating the specified range in a concentrated manner, compared to the case of diffusing the light of the light source lamp to illuminate a wider range than the specified range. The illumination method described.
  3. 　照明器具の反射板として、横断面形状がいずれの箇所においても正多角形である反射板を使用する請求項１又は請求項２に記載の照明方法。 The illumination method according to claim 1 or 2, wherein a reflector having a regular polygonal shape at any location is used as the reflector of the lighting fixture.
PCT/JP2008/053203 2008-02-25 2008-02-25 Illuminating method WO2009107193A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011146712A (en) * 2010-01-18 2011-07-28 Sdi Corp Frame of package for light-emitting device
JP2015088389A (en) * 2013-10-31 2015-05-07 パナソニックＩｐマネジメント株式会社 Lighting device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5723868A (en) * 1995-05-15 1998-03-03 Welch Allyn, Inc. Illuminating assembly for use with bar code readers
JP2004516666A (en) * 2000-12-21 2004-06-03 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Illumination device having reflector and lens
JP2005346968A (en) * 2004-05-31 2005-12-15 Miyoji Ishibashi Lighting fixture

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5723868A (en) * 1995-05-15 1998-03-03 Welch Allyn, Inc. Illuminating assembly for use with bar code readers
JP2004516666A (en) * 2000-12-21 2004-06-03 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Illumination device having reflector and lens
JP2005346968A (en) * 2004-05-31 2005-12-15 Miyoji Ishibashi Lighting fixture

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011146712A (en) * 2010-01-18 2011-07-28 Sdi Corp Frame of package for light-emitting device
JP2015088389A (en) * 2013-10-31 2015-05-07 パナソニックＩｐマネジメント株式会社 Lighting device

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