JP4410636B2 - lighting equipment - Google Patents

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JP4410636B2
JP4410636B2 JP2004241094A JP2004241094A JP4410636B2 JP 4410636 B2 JP4410636 B2 JP 4410636B2 JP 2004241094 A JP2004241094 A JP 2004241094A JP 2004241094 A JP2004241094 A JP 2004241094A JP 4410636 B2 JP4410636 B2 JP 4410636B2
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reflector
light source
rod
shaped light
source lamps
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JP2006059707A (en
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三代次 石橋
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三代次 石橋
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Description

本発明は、建屋の天井等に設置されて下方の床面を照明するダウンライトに好適な照明器具に関する。    The present invention relates to a lighting fixture suitable for a downlight that is installed on a ceiling or the like of a building and illuminates a lower floor surface.

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において、反射板は、照明効率を左右する重要な構成部材である。   In a luminaire having a light source lamp and a reflector that reflects light from the light source lamp, the reflector is an important component that affects the illumination efficiency.

本願出願人は、先に特許文献１において、全体形状を笠状の多面体として、かつ、その内面をそれぞれ傾斜角度の異なる上下２段の傾斜部から形成した反射板を提案した。また、特願２００４−１６２２４８において、傾斜部を上下３段以上にすることを提案した。この複数段構造の反射板によって、上下の傾斜部の傾斜角度を調整して光を反射させることにより、広範囲を照明することが可能となった。   The applicant of the present application previously proposed, in Patent Document 1, a reflector having an overall shape as a shaded polyhedron and an inner surface formed of two upper and lower inclined portions having different inclination angles. Further, in Japanese Patent Application No. 2004-162248, it has been proposed that the inclined part is three or more steps in the vertical direction. With this multi-stage reflector, it is possible to illuminate a wide area by adjusting the inclination angle of the upper and lower inclined portions to reflect light.

しかし、照度を向上させるために２本の棒状光源ランプ（蛍光管ランプ）を使用する場合、２本の棒状光源ランプどうしの間で光が干渉して打ち消し合うため、棒状光源ランプからの光が照明として有効利用されず、照度が不足するとともに、照明領域の平面形状がひょうたん状になるという問題があった。
特開２００３−１５１３１０号公報 However, when two rod-shaped light source lamps (fluorescent tube lamps) are used to improve the illuminance, the light beams interfere with each other and cancel each other. There is a problem that it is not effectively used as illumination, the illuminance is insufficient, and the planar shape of the illumination area becomes a gourd.
JP 2003-151310 A

本発明が解決しようとする課題は、２本の棒状光源ランプを使用する照明器具において、その照明効率を向上させることにある。   The problem to be solved by the present invention is to improve the illumination efficiency of a lighting fixture using two rod-shaped light source lamps.

本発明は、２本の棒状光源ランプの間に、それぞれの棒状光源ランプからの光を反射させる反射体を配置することによって上記課題を解決した。   This invention solved the said subject by arrange | positioning the reflector which reflects the light from each rod-shaped light source lamp between two rod-shaped light source lamps.

すなわち、本発明は、光を反射させるために内面を鏡面状とするとともに上端に天板部を有し下端を開放させた笠状の反射板と、この反射板の天板部近傍に上端部を固定して反射板内に挿入される２本の棒状光源ランプとを有する照明器具であって、前記２本の棒状光源ランプは、下方に向かうにしたがって相互の間隔が狭くなるように配置され、前記２本の棒状光源ランプに挟まれた前記反射板の天板部に、下方に向けて伸びる反射体を配置し、前記２本の棒状光源ランプと対向する前記反射体の両側面を反射面とするとともに、この反射体の両側面を下方側に向かうにしたがって相互の間隔が狭くなるように形成し、前記２本の棒状光源ランプ及び前記反射体の両側面が、前記笠状の反射板の垂直中心軸を対称軸として対称に配置されているものである。 That is, the present invention includes a bevel-shaped reflection plate opens the lower end has a top plate to the upper end with a mirror-like inner surface to reflect light, the upper end to the top plate portion near the reflector A lighting fixture having two rod-shaped light source lamps that are inserted into the reflector with the portion fixed, and the two rod-shaped light source lamps are arranged so that the distance between them decreases toward the bottom. A reflector extending downward is disposed on the top plate portion of the reflector sandwiched between the two rod-shaped light source lamps, and both side surfaces of the reflector facing the two rod-shaped light source lamps are disposed The reflecting surface is formed so that the distance between the two side surfaces of the reflector decreases toward the lower side, and the two rod-like light source lamps and the both side surfaces of the reflector are formed in the shade shape. It is arranged symmetrically with the vertical central axis of the reflector as the axis of symmetry It is those that.

本発明において、反射体の下端は２本の棒状光源ランプの下端より上方に位置するようにすることが好ましい。 In the present invention, it is preferable that the lower end of the reflector is positioned above the lower ends of the two bar light source lamps.

本発明によれば、２本の棒状光源ランプの間に配置した反射体により、２本の棒状光源ランプ間の光が反射されるので、２本の棒状光源ランプからの全ての光を照明として利用することができ、照明効率を向上させることができる。具体的には、４本の蛍光管ランプによる照度を２本でまかなえるようになり、大幅に電力使用量を削減できる。また、発熱量が減少して建屋内の空調効率を向上させることができる。
According to the present invention, since the light between the two rod-shaped light source lamps is reflected by the reflector disposed between the two rod-shaped light source lamps, all the light from the two rod-shaped light source lamps is used as illumination. It can be used and lighting efficiency can be improved. Specifically, the illuminance by the four fluorescent tube lamps can be covered by two, and the power consumption can be greatly reduced. Moreover, the calorific value can be reduced and the air conditioning efficiency in the building can be improved.

以下、本発明をダウンライトに適用した添付図に示す実施例に基づいて具体的に説明する。   Hereinafter, the present invention will be described in detail based on an embodiment shown in the accompanying drawings in which the present invention is applied to a downlight.

図１は、本発明に係るダウンライトの一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す斜視図である。   FIG. 1 is a sectional view showing an embodiment of a downlight according to the present invention, and FIG. 2 is a perspective view showing a reflector used in the downlight of FIG.

図１に示すダウンライト１０は、蛍光管ランプからなる２本の棒状光源ランプ１と、棒状光源ランプ１の光を反射させるための反射板２及び反射体３と、反射板２を固定する本体部４を備える。   A downlight 10 shown in FIG. 1 includes two rod-like light source lamps 1 made of fluorescent tube lamps, a reflector 2 and a reflector 3 for reflecting light from the rod-like light source lamp 1, and a main body for fixing the reflector 2 Part 4 is provided.

２本の棒状光源ランプ１は、その上端部が反射板２の天板部２ｄ近傍に固定され、発光部分は反射板２内に位置している。また、２本の棒状光源ランプ１は、図１に示すように、下方に向かうにしたがって相互の間隔が狭くなるようＶ字状に配置されている。   The two rod-shaped light source lamps 1 have their upper ends fixed to the vicinity of the top plate 2 d of the reflector 2, and the light emitting portions are located in the reflector 2. Further, as shown in FIG. 1, the two rod-shaped light source lamps 1 are arranged in a V shape so that the distance between them decreases toward the bottom.

反射板２は、底面形状（横断面形状）が正１８角形の笠状の１８面体からなり、その内面は、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段の傾斜部から形成されている。反射板２の大きさや各傾斜部２ａ〜２ｃの傾斜角度及び長さは、ダウンライト１０を設置する場所の天井高さや照明範囲などの条件に応じて適宜設定される。   The reflection plate 2 is formed of a shaded octahedron whose bottom surface shape (transverse cross-sectional shape) is a regular octagon, and the inner surface has a first inclined portion 2a, a second inclined portion 2b, and a third inclined portion having different inclination angles. It is formed from three upper and lower inclined portions made of 2c. The size of the reflecting plate 2 and the inclination angles and lengths of the inclined portions 2a to 2c are appropriately set according to conditions such as the ceiling height and illumination range of the place where the downlight 10 is installed.

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。なお、図２中の符号２ｅは、２本の棒状光源ランプを挿通するための切欠きである。   The material of the reflecting plate 2 is aluminum, and the reflecting surface of its inner surface is made into a mirror surface 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. In addition, the code | symbol 2e in FIG. 2 is a notch for inserting two rod-shaped light source lamps.

反射体３は、２本の棒状光源ランプ１に挟まれた反射板２の天板部２ｄの内面から下方に向けて伸びるように設けられており、２本の棒状光源ランプ１と対向する両側面は反射面３ａとされている。この両側面の反射面３ａ，３ａは、下方に向かうにしたがって相互の間隔が狭くなるようＶ字状に形成されている。また、反射体３の下端は２本の棒状光源ランプ１の下端より上方に位置するように配置されている。   The reflector 3 is provided so as to extend downward from the inner surface of the top plate portion 2 d of the reflector 2 sandwiched between the two rod-shaped light source lamps 1, and is opposite to the two rod-shaped light source lamps 1. The surface is a reflective surface 3a. The reflecting surfaces 3a and 3a on both side surfaces are formed in a V shape so that the distance between the reflecting surfaces 3a and 3a decreases toward the lower side. Further, the lower end of the reflector 3 is arranged so as to be located above the lower ends of the two rod-like light source lamps 1.

本体部４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４ａを有しており、この支持部材４ａ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。   The main body 4 has a ring-shaped support member 4a projecting outward on the outer periphery of the lower end thereof, and the downlight is placed on the back surface of the ceiling T by placing the support member 4a on the back surface of the ceiling T. The entire 10 is suspended.

以上の構成において、２本の棒状光源ランプ１の上端部分から反射板２の中心方向に発する光は、干渉することなく、反射体３の反射面３ａによって反射され、さらに、その反射光が反射板２内面で複数回反射されて床面を照明する。このとき、２本の棒状光源ランプ１及び反射体３の反射面３ａが上述のように垂直ではなく傾斜しているので、光が多方向に反射して照明効率が向上する。また、２本の棒状光源ランプ１の他の部分から発する光も反射板２内面で複数回反射して床面を照明する。   In the above configuration, light emitted from the upper end portions of the two rod-shaped light source lamps 1 toward the center of the reflector 2 is reflected by the reflecting surface 3a of the reflector 3 without interference, and the reflected light is further reflected. The floor surface is illuminated by being reflected a plurality of times on the inner surface of the plate 2. At this time, since the two bar-shaped light source lamps 1 and the reflecting surfaces 3a of the reflectors 3 are not perpendicular as described above but are inclined, the light is reflected in multiple directions and the illumination efficiency is improved. Further, light emitted from other portions of the two rod-shaped light source lamps 1 is also reflected by the inner surface of the reflector 2 a plurality of times to illuminate the floor surface.

このように、２本の棒状光源ランプ１間に反射体３を設けたので、２本の棒状光源ランプ１の上端部分から反射板２の中心方向に発する光も照明用として有効に利用でき、照明効率が向上する。これによって従来タイプにおける４本の蛍光管ランプによる照度を２本でまかなえるようになった。   Thus, since the reflector 3 is provided between the two rod-shaped light source lamps 1, the light emitted from the upper end portions of the two rod-shaped light source lamps 1 toward the center of the reflector 2 can also be used effectively for illumination. Lighting efficiency is improved. As a result, the illuminance by the four fluorescent tube lamps in the conventional type can be covered by two.

なお、上記の実施例では反射体３の反射面３ａを平面としたが曲面としてもよい。 In the above embodiment, the reflecting surface 3a of the reflector 3 is a flat surface, but it may be a curved surface .

本発明は、天井に取り付けられるダウンライトとしてだけでなく、壁面、床面に取り付ける照明器具としても利用可能である。   The present invention can be used not only as a downlight attached to a ceiling but also as a lighting fixture attached to a wall surface and a floor surface.

本発明に係るダウンライトの一実施例を示す断面図である。It is sectional drawing which shows one Example of the downlight which concerns on this invention. 図１のダウンライトに使用した反射板を示す斜視図である。It is a perspective view which shows the reflecting plate used for the downlight of FIG.

符号の説明Explanation of symbols

１ 棒状光源ランプ
２ 反射板
２ａ 第１傾斜部
２ｂ 第２傾斜部
２ｃ 第３傾斜部
２ｄ 天板部
２ｅ 切欠き
３ 反射体
３ａ 反射面
４ 本体部
４ａ 支持部材 DESCRIPTION OF SYMBOLS 1 Rod light source lamp 2 Reflector 2a 1st inclination part 2b 2nd inclination part 2c 3rd inclination part 2d Top plate part 2e Notch 3 Reflector 3a Reflecting surface 4 Main-body part 4a Support member

Claims (2)

光を反射させるために内面を鏡面状とするとともに上端に天板部を有し下端を開放させた笠状の反射板と、この反射板の天板部近傍に上端部を固定して反射板内に挿入される２本の棒状光源ランプとを有する照明器具であって、
前記２本の棒状光源ランプは、下方に向かうにしたがって相互の間隔が狭くなるように配置され、
前記２本の棒状光源ランプに挟まれた前記反射板の天板部に、下方に向けて伸びる反射体を配置し、前記２本の棒状光源ランプと対向する前記反射体の両側面を反射面とするとともに、この反射体の両側面を下方側に向かうにしたがって相互の間隔が狭くなるように形成し、
前記２本の棒状光源ランプ及び前記反射体の両側面が、前記笠状の反射板の垂直中心軸を対称軸として対称に配置されている照明器具。 In order to reflect light, the inner surface is mirror-like and has a top plate at the upper end and the lower end is opened, and the upper end is fixed near the top plate of the reflector. A lighting fixture having two rod-shaped light source lamps inserted therein,
The two rod-shaped light source lamps are arranged so that the distance between them decreases toward the bottom,
A reflector extending downward is disposed on the top plate portion of the reflector sandwiched between the two rod-shaped light source lamps, and both side surfaces of the reflector facing the two rod-shaped light source lamps are reflecting surfaces. And forming both the side surfaces of this reflector so that the mutual distance becomes narrower toward the lower side,
The lighting fixture in which the two rod-shaped light source lamps and the both side surfaces of the reflector are arranged symmetrically with respect to a vertical central axis of the shade-shaped reflector. 前記反射体の下端が前記２本の棒状光源ランプの下端より上方に位置する請求項１に記載の照明器具。 The lighting fixture according to claim 1, wherein a lower end of the reflector is positioned above a lower end of the two rod-shaped light source lamps.
JP2004241094A 2004-08-20 2004-08-20 lighting equipment Expired - Fee Related JP4410636B2 (en)

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JP2004241094A JP4410636B2 (en) 2004-08-20 2004-08-20 lighting equipment
TW094117546A TW200607956A (en) 2004-08-20 2005-05-27 Lighting fixture

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JP2004241094A JP4410636B2 (en) 2004-08-20 2004-08-20 lighting equipment

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JP2006059707A JP2006059707A (en) 2006-03-02
JP4410636B2 true JP4410636B2 (en) 2010-02-03

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008171685A (en) * 2007-01-11 2008-07-24 Miyoji Ishibashi Lighting fixture
CN101373049A (en) 2007-08-24 2009-02-25 富士迈半导体精密工业（上海）有限公司 LED lighting device

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