JP5861092B2 - lighting equipment - Google Patents

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JP5861092B2
JP5861092B2 JP2011209008A JP2011209008A JP5861092B2 JP 5861092 B2 JP5861092 B2 JP 5861092B2 JP 2011209008 A JP2011209008 A JP 2011209008A JP 2011209008 A JP2011209008 A JP 2011209008A JP 5861092 B2 JP5861092 B2 JP 5861092B2
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light source
led unit
led
mounting plate
unit
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JP2013069626A (en
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宮原 栄二
栄二 宮原
徹 溝谷
徹 溝谷
寛 秋田
寛 秋田
優子 齊藤
優子 齊藤
一哉 今安
一哉 今安
久典 村上
久典 村上
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Panasonic Intellectual Property Management Co Ltd
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Description

本発明は、発光ダイオードを光源とするLEDユニットを用いた照明器具に関する。   The present invention relates to a luminaire using an LED unit having a light emitting diode as a light source.

従来から、天井下地に吊下された吊りボルトの下端部にハンガーを介して保持された天井バーが、天井下地に沿った面内において略平行して複数本設けられ、隣接して並設された一対の天井バー間に天井パネル等が設けられたシステム天井が知られている。また、この種のシステム天井に用いるシステム天井用照明器具が知られており、例えば特許文献1に開示されている。   Conventionally, a plurality of ceiling bars, which are held through a hanger at the lower end of a suspension bolt suspended from a ceiling base, are provided in parallel in a plane along the ceiling base, and are arranged adjacent to each other. A system ceiling is known in which a ceiling panel or the like is provided between a pair of ceiling bars. Further, a system ceiling lighting apparatus used for this type of system ceiling is known, and is disclosed in, for example, Patent Document 1.

特許文献1に記載のシステム天井用照明器具は、一対の天井バーの頭部間に架設される天井バーの長手方向に長い矩形枠状の本体枠と、本体枠の下面に形成された取付ねじ孔に螺合する取付ねじによって本体枠の下面側に取付けられる反射板とを備える。照明器具に設けられたランプは、直管型の蛍光灯であって、天井バーの長手方向に対向して設けられる2個1組のソケット間に保持される。ソケットは、本体枠の長手方向の両端部における下面に形成されたソケット取付部に着脱自在に取付けられる。また、ソケットに接続されることによってランプを点灯させる安定器と、安定器と外部の電源との間に介在し安定器に電源を供給する端子台とを収納した点灯装置が、本体枠の上面側に取付けられる。   A system ceiling illuminator described in Patent Document 1 includes a rectangular frame-like main body frame extending in the longitudinal direction of a ceiling bar installed between the heads of a pair of ceiling bars, and a mounting screw formed on the lower surface of the main body frame And a reflector attached to the lower surface side of the main body frame by an attachment screw screwed into the hole. The lamp provided in the lighting fixture is a straight tube type fluorescent lamp, and is held between a set of two sockets provided facing each other in the longitudinal direction of the ceiling bar. The socket is detachably attached to socket attachment portions formed on the lower surfaces at both ends in the longitudinal direction of the main body frame. In addition, a lighting device that houses a ballast for lighting a lamp by being connected to a socket and a terminal block that is interposed between the ballast and an external power source and supplies power to the ballast is provided on the upper surface of the main body frame. Mounted on the side.

特開2005−100865号公報Japanese Patent Laid-Open No. 2005-10085

ところで、近年では、発光ダイオード(LEDチップ)から成る複数の光源を直線状に配列して構成されるLEDユニットを従来の蛍光灯に代えて用いることが提案されている。このLEDユニット用照明器具の器具本体は、既存の器具本体と交換して用いることから、既存の器具本体と同寸法で形成されるのが望ましく、これに伴ってLEDユニットの寸法も既存の直管型の蛍光灯の寸法に合わせて規格化されることが考えられる。   Incidentally, in recent years, it has been proposed to use an LED unit configured by linearly arranging a plurality of light sources composed of light emitting diodes (LED chips) instead of a conventional fluorescent lamp. Since the fixture body of the LED unit lighting fixture is used in exchange for the existing fixture body, it is desirable to form the same size as that of the existing fixture body. It may be standardized according to the dimensions of the tube-type fluorescent lamp.

しかしながら、発光ダイオードを光源とするLEDユニットは、既存の蛍光灯よりも指向性が強く、単に既存の器具本体及び蛍光灯をLEDユニット用の器具本体及びLEDユニットに交換しただけでは、照明空間の広がりに乏しいという問題があった。   However, an LED unit using a light emitting diode as a light source has higher directivity than an existing fluorescent lamp, and simply replacing the existing fixture body and fluorescent lamp with the fixture unit and LED unit for the LED unit There was a problem of poor spread.

本発明は、上記の点に鑑みて為されたもので、光源としてLEDユニットを用いても照明空間を広げることのできる照明器具を提供することを目的とする。   This invention is made | formed in view of said point, and it aims at providing the lighting fixture which can expand illumination space even if it uses an LED unit as a light source.

本発明の照明器具は、長尺板状の実装基板の表面に1乃至複数個の発光ダイオードが実装されて成る光源部、及び透光性を有する材料から成り前記光源部を覆う長尺箱状のカバーを有するLEDユニットと、前記LEDユニットが取付けられる取付板と、前記取付板を介して前記LEDユニットを保持する器具本体とを備え、前記カバーは、前記光源部の長手方向における両端部の少なくとも一部を覆う位置まで形成され、前記器具本体には、前記LEDユニットのうち最も外側に位置する前記LEDユニットと対向する部位に、前記光源部から発せられる光を反射する反射面が形成され、前記取付板には、前記LEDユニットのうち前記取付板の中心部に最も近い2つの前記LEDユニットに挟まれる形で設けられて前記光源部から発せられる光を反射する傾斜面を有する反射部が形成され、前記反射面と水平面との間で為す第1の傾斜角が、前記反射部の傾斜面と水平面との間で為す第2の傾斜角よりも小さく、前記取付板における前記反射部と前記LEDユニットとの間には第1の平坦面が形成され、前記取付板における前記反射面と前記LEDユニットとの間には第2の平坦面が形成され、前記第2の平坦面は、その短手方向における幅寸法が前記第1の平坦面の短手方向における幅寸法よりも大きくなるように形成されることを特徴とする。 The luminaire of the present invention is a light source part in which one or more light emitting diodes are mounted on the surface of a long plate-like mounting board, and a long box shape that covers the light source part made of a light-transmitting material. An LED unit having a cover, an attachment plate to which the LED unit is attached, and an appliance main body that holds the LED unit via the attachment plate, and the cover is provided at both ends in the longitudinal direction of the light source part. At least a part of the LED unit is formed, and a reflection surface that reflects the light emitted from the light source unit is formed on a part of the fixture body that faces the LED unit located on the outermost side of the LED unit. The mounting plate is provided so as to be sandwiched between the two LED units closest to the center of the mounting plate among the LED units, and is emitted from the light source unit. A second inclined angle formed between the reflecting surface and the horizontal plane is defined by a first inclined angle formed between the reflecting surface and the horizontal plane. rather smaller than the between the reflective portion of the mounting plate and the LED unit is formed first flat surface, the second flat between the reflection surface of the mounting plate and the LED unit A surface is formed, and the second flat surface is formed such that a width dimension in a short direction thereof is larger than a width dimension in a short direction of the first flat surface .

本発明は、光源としてLEDユニットを用いても照明空間を広げることができるという効果を奏する。   The present invention has an effect that an illumination space can be expanded even if an LED unit is used as a light source.

本発明に係る照明器具の実施形態を示す要部断面図である。It is principal part sectional drawing which shows embodiment of the lighting fixture which concerns on this invention. 同上の照明器具の分解斜視図である。It is a disassembled perspective view of a lighting fixture same as the above. 同上の照明器具におけるLEDユニットを示す図で、(a)は断面図で、(b)は全体斜視図である。It is a figure which shows the LED unit in a lighting fixture same as the above, (a) is sectional drawing, (b) is a whole perspective view. (a)は同上の照明器具における器具本体の平面図で、(b)は同上の照明器具における取付板の平面図である。(A) is a top view of the fixture main body in a lighting fixture same as the above, (b) is a top view of the mounting plate in a lighting fixture same as the above. 同上の照明器具の他の構成である4灯タイプの照明器具の外観を示す図で、(a)は平面図で、(b)は斜視図である。It is a figure which shows the external appearance of the 4-lamp type lighting fixture which is another structure of a lighting fixture same as the above, (a) is a top view, (b) is a perspective view.

以下、本発明に係る照明器具の実施形態について図面を用いて説明する。なお、以下の説明では、図2に示す矢印により上下左右方向及び前後方向を定めるものとする。本実施形態は、図1,2に示すように、複数(図示では8個)のLEDユニット1と、取付板5を介して各LEDユニット1を保持する器具本体2とで構成される。   Hereinafter, embodiments of a lighting apparatus according to the present invention will be described with reference to the drawings. In the following description, the up / down / left / right direction and the front / rear direction are defined by arrows shown in FIG. As shown in FIGS. 1 and 2, the present embodiment includes a plurality (eight in the drawing) of LED units 1 and an instrument body 2 that holds each LED unit 1 via a mounting plate 5.

LEDユニット1は、図3(a),(b)に示すように、光源部10と、放熱部材11と、絶縁部材12と、取付部材13と、カバー14とで構成される。   As shown in FIGS. 3A and 3B, the LED unit 1 includes a light source unit 10, a heat radiating member 11, an insulating member 12, an attachment member 13, and a cover 14.

光源部10は、絶縁材料(例えば、セラミック)によって長尺の板状に形成された実装基板10Aと、実装基板10Aの下面に実装される複数個の青色LEDチップ10B(発光ダイオード)と、実装基板10Aの下面に形成される導電体(図示せず)とを有する。各LEDチップ10Bは、実装基板10A下面の短手方向(左右方向)の中央部において、長手方向(前後方向)に沿って等間隔且つ直線状に並べて実装される。そして、各LEDチップ10Bは、透光性を有し且つ黄色蛍光体が混合された合成樹脂製の封止部材10Cで封止されている。したがって、各LEDチップ10Bから放射される青色光の一部が黄色蛍光体で波長変換され、波長変換された黄色光と波長変換されなかった青色光とが混ざることにより、光源部10から放射される光が全体として白色光となる。   The light source unit 10 includes a mounting board 10A formed in an elongated plate shape by an insulating material (for example, ceramic), a plurality of blue LED chips 10B (light emitting diodes) mounted on the lower surface of the mounting board 10A, and a mounting And a conductor (not shown) formed on the lower surface of the substrate 10A. The LED chips 10B are mounted in a straight line at equal intervals along the longitudinal direction (front-rear direction) at the center in the short side direction (left-right direction) of the lower surface of the mounting substrate 10A. Each LED chip 10B is sealed with a synthetic resin sealing member 10C having translucency and mixed with a yellow phosphor. Therefore, a part of the blue light emitted from each LED chip 10B is wavelength-converted by the yellow phosphor, and the wavelength-converted yellow light and the blue light not wavelength-converted are mixed to be emitted from the light source unit 10. The whole light becomes white light.

放熱部材11は、長尺の平板状に形成され、絶縁部材12を介して光源部10が載置される主片11Aと、主片11Aの左右両端より厚み方向(上下方向)に延びる1対の側片11Bとが熱伝導度の高い材料(例えば、アルミニウム)によって一体に形成される。また、主片11Aの一方の面(光源部10が載置される面。以下、載置面と呼ぶ)には、光源部10に近付く向きに突出する突条部(図示せず)が長手方向(前後方向)に沿って突設されている。   The heat radiating member 11 is formed in a long flat plate shape, and has a main piece 11A on which the light source unit 10 is placed via an insulating member 12, and a pair extending in the thickness direction (vertical direction) from the left and right ends of the main piece 11A. The side piece 11B is integrally formed of a material having high thermal conductivity (for example, aluminum). Further, on one surface of the main piece 11A (the surface on which the light source unit 10 is placed; hereinafter referred to as a placement surface), a protrusion (not shown) protruding in a direction approaching the light source unit 10 is long. It protrudes along the direction (front-rear direction).

絶縁部材12は、放熱部材11の主片11Aと光源部10との間に介装される主部12Aと、主部12Aの短手方向(左右方向)の両端より突出する1対の反射部12Bとが合成樹脂成形体として一体に形成されて成る。各反射部12Bは、上端から下端に向かうに従って外側(左右両側)に開くように傾斜し、その傾斜面が反射面となって光源部10から放射される光を下方へ反射する。また、絶縁部材12の主部12Aの中央部には、放熱部材11の主片11Aが載置された状態において突条部が挿通される長孔状の挿通孔(図示せず)が厚み方向(上下方向)に貫通して設けられている。   The insulating member 12 includes a main part 12A interposed between the main piece 11A of the heat radiating member 11 and the light source part 10, and a pair of reflecting parts protruding from both ends in the short direction (left-right direction) of the main part 12A. 12B is integrally formed as a synthetic resin molding. Each reflecting portion 12B is inclined so as to open outward (both left and right) from the upper end to the lower end, and the inclined surface serves as a reflecting surface to reflect light emitted from the light source unit 10 downward. Further, in the central portion of the main portion 12A of the insulating member 12, an elongated insertion hole (not shown) through which the protrusion portion is inserted in a state where the main piece 11A of the heat radiating member 11 is placed is in the thickness direction. It is provided penetrating in the (vertical direction).

取付部材13は、鋼板などの金属板を曲げ加工することで角樋状に形成され、長尺矩形状の底板13Aと、底板13Aの長手方向(前後方向)に沿った両端より立ち下がる1対の側板13Bとから成り、放熱部材11に固定される。取付部材13の底板13Aには、長手方向の中央部を挟んで2つずつ取付孔13Dが設けられている。各取付孔13Dは厚み方向(上下方向)に貫通して設けられており、その内周面には雌ねじ(図示せず)が形成されている。これら取付孔13Dは、後述する取付板5にLEDユニット1を取付ける際に用いられる。また、取付部材13には、取付金具13Cを用いてレセプタクルコネクタ15が取付けられている。   The mounting member 13 is formed into a square shape by bending a metal plate such as a steel plate, and is a pair of long rectangular bottom plate 13A and a pair that falls from both ends along the longitudinal direction (front-rear direction) of the bottom plate 13A. The side plate 13B is fixed to the heat dissipating member 11. Two attachment holes 13D are provided in the bottom plate 13A of the attachment member 13 with the central portion in the longitudinal direction interposed therebetween. Each mounting hole 13D is provided so as to penetrate in the thickness direction (vertical direction), and an internal thread (not shown) is formed on the inner peripheral surface thereof. These attachment holes 13D are used when attaching the LED unit 1 to the attachment plate 5 described later. In addition, a receptacle connector 15 is attached to the attachment member 13 using an attachment fitting 13C.

レセプタクルコネクタ15は、光源部10の導電体と電気的に接続された電線(図示せず)が接続される接続端子部15Aと、プラグコネクタ(図示せず)が差し込まれるコネクタ接続部15Bとを有する。プラグコネクタは電線を介して点灯装置A1(図4(a)参照)に接続されており、プラグコネクタがレセプタクルコネクタ15に挿抜自在に差込接続される。すなわち、プラグコネクタとレセプタクルコネクタ15が差込接続されることで点灯装置A1と光源部10とが電気的に接続され、点灯装置A1から光源部10に給電されて光源部10が発光(点灯)する。   The receptacle connector 15 includes a connection terminal portion 15A to which an electric wire (not shown) electrically connected to the conductor of the light source unit 10 is connected, and a connector connection portion 15B to which a plug connector (not shown) is inserted. Have. The plug connector is connected to the lighting device A1 (see FIG. 4A) via an electric wire, and the plug connector is plugged into the receptacle connector 15 so as to be inserted and removed. That is, the lighting device A1 and the light source unit 10 are electrically connected by plugging and connecting the plug connector and the receptacle connector 15, and power is supplied from the lighting device A1 to the light source unit 10 so that the light source unit 10 emits light (lights up). To do.

カバー14は、アクリル樹脂やポリカーボネート樹脂などの透光性を有する合成樹脂材料により、底部14Aと、底部14Aの周囲を囲む側壁部14Bを有する長尺の矩形箱状に形成されており、光源部10及び放熱部材11及び絶縁部材12を覆う。また、長手方向(前後方向)に沿った1対の側壁部14Bには、放熱部材11の側片11Bに形成されている複数の係合突起11Cが係脱自在に係合する複数の係合凹部14Cがそれぞれ形成されている。   The cover 14 is formed of a light-transmitting synthetic resin material such as acrylic resin or polycarbonate resin into a long rectangular box shape having a bottom portion 14A and a side wall portion 14B surrounding the bottom portion 14A. 10, the heat radiating member 11, and the insulating member 12 are covered. A plurality of engagement protrusions 11C formed on the side piece 11B of the heat radiation member 11 are detachably engaged with the pair of side wall portions 14B along the longitudinal direction (front-rear direction). Recesses 14C are respectively formed.

次に、LEDユニット1の組立手順を説明する。まず、光源部10が絶縁部材12の主部12Aの載置面に載置され、接着やかしめなどの適当な方法によって絶縁部材12と結合される。続いて、光源部10と結合された絶縁部材12が放熱部材11の主片11Aに取付けられる。そして、取付金具13Cによってレセプタクルコネクタ15が取付けられた取付部材13が放熱部材11とねじ止めにより固定される。最後に、底部14Aを光源部10に対向させる向きでカバー14が放熱部材11に被せられ、側壁部14Bの係合凹部14Cに側片11Bの係合突起11Cが係合し、カバー14が放熱部材11に結合されることでLEDユニット1が完成する。   Next, the assembly procedure of the LED unit 1 will be described. First, the light source unit 10 is mounted on the mounting surface of the main portion 12A of the insulating member 12, and is coupled to the insulating member 12 by an appropriate method such as adhesion or caulking. Subsequently, the insulating member 12 coupled to the light source unit 10 is attached to the main piece 11 </ b> A of the heat radiating member 11. Then, the mounting member 13 to which the receptacle connector 15 is mounted by the mounting bracket 13C is fixed to the heat radiating member 11 by screws. Finally, the cover 14 is placed on the heat radiating member 11 with the bottom portion 14A facing the light source unit 10, the engagement protrusion 11C of the side piece 11B engages with the engagement recess 14C of the side wall portion 14B, and the cover 14 radiates heat. The LED unit 1 is completed by being coupled to the member 11.

なお、LEDユニット1の完成状態においては、放熱部材11の突条部が絶縁部材12の挿通孔を介して実装基板10Aの上面に当接する。このため、光源部1の発光中に発生する熱は、実装基板10Aから突条部を通じて放熱部材11に伝導されることで効率的に放熱されるようになっている。   In the completed state of the LED unit 1, the protruding portion of the heat dissipation member 11 contacts the upper surface of the mounting substrate 10 </ b> A through the insertion hole of the insulating member 12. For this reason, the heat | fever generate | occur | produced during light emission of the light source part 1 is thermally radiated efficiently by being conducted to the heat radiating member 11 from 10A of mounting substrates through a protrusion part.

器具本体2は、金属板(例えば、クロムフリーの亜鉛鋼板)から形成され、図2に示すように、矩形板状の主部3と、主部3に取付けられる矩形枠状の枠部4とで構成される。主部3は、図2,4(a)に示すように、矩形板状の主板30と、主板30の四辺からそれぞれ下向きに突出する矩形状の側板31とを一体に形成して成る。主板30の中心部を挟んだ前後両側には、それぞれ電源線が接続される電源端子台32と、信号線が接続される調光端子台33とが設けられている。また、主板30における電源端子台32と調光端子台33との間には、天井(図示せず)から吊り下げられる吊ボルト(図示せず)が挿入されるダルマ穴形状の挿入孔30Cと、長円形状の挿入孔30Dとが厚み方向(上下方向)に貫通して設けられている。これら挿入孔30C,30Dに吊ボルトを挿入して係止することで、主部3が天井から吊持される。   The instrument body 2 is formed of a metal plate (for example, a chrome-free galvanized steel plate), and as shown in FIG. 2, a rectangular plate-shaped main portion 3 and a rectangular frame-shaped frame portion 4 attached to the main portion 3 Consists of. 2 and 4A, the main portion 3 is formed by integrally forming a rectangular plate-like main plate 30 and rectangular side plates 31 that protrude downward from the four sides of the main plate 30, respectively. On both the front and rear sides across the center of the main plate 30, a power terminal block 32 to which a power line is connected and a dimming terminal block 33 to which a signal line is connected are provided. Also, between the power terminal block 32 and the dimming terminal block 33 on the main plate 30, a dharma hole-shaped insertion hole 30C into which a suspension bolt (not shown) suspended from the ceiling (not shown) is inserted; The oval insertion hole 30D is provided so as to penetrate in the thickness direction (vertical direction). The main part 3 is suspended from the ceiling by inserting a suspension bolt into the insertion holes 30C and 30D and locking it.

主板30の四隅には、枠部4の四隅に設けられる組立孔(図示せず)と対向する形で組立孔30Aが厚み方向(上下方向)に貫通して設けられている。したがって、主板30の各組立孔30Aと枠部4の各組立孔とを重ね、組立ねじ(図示せず)によってねじ止めすることで、主部3と枠部4とが結合され、器具本体2が完成する。また、主板30における各組立孔30Aの近傍には、後述する取付板5の取付孔50とそれぞれ対向する形で取付金具34が設けられている。各取付金具34は、主部3と枠部4とを結合した状態で枠部4の中空部分の四隅から下向きに突出する形で設けられている。また、各取付金具34の下面には、図示しないが取付ねじS1が締め付けられるねじ孔が設けられている。   Assembly holes 30A are provided at the four corners of the main plate 30 so as to face the assembly holes (not shown) provided at the four corners of the frame portion 4 in the thickness direction (vertical direction). Therefore, the assembly holes 30A of the main plate 30 and the assembly holes of the frame portion 4 are overlapped and screwed with an assembly screw (not shown), whereby the main portion 3 and the frame portion 4 are coupled, and the instrument body 2 Is completed. Further, in the vicinity of each assembly hole 30 </ b> A in the main plate 30, mounting brackets 34 are provided so as to face mounting holes 50 of the mounting plate 5 described later. Each mounting bracket 34 is provided so as to protrude downward from the four corners of the hollow portion of the frame portion 4 in a state where the main portion 3 and the frame portion 4 are coupled. In addition, although not shown, a screw hole for tightening the mounting screw S1 is provided on the lower surface of each mounting bracket 34.

枠部4の前後両端部には、図2に示すように、各端縁をそれぞれ内側に折り曲げることで中空の直方体状の前壁部40及び後壁部41が形成されている。また、枠部4の左右両端部には、図2に示すように、各端縁をそれぞれ内側に折り曲げることで左壁部42及び右壁部43が形成されている。ここで、左壁部42の右側面は右斜め上方に傾斜しており、右壁部43の左側面は左斜め上方に傾斜している。これら左右壁部42,43の傾斜面は、光源部10から発せられる光を反射する反射面42A,43Aとなっている。   As shown in FIG. 2, a hollow rectangular parallelepiped front wall portion 40 and rear wall portion 41 are formed at both front and rear end portions of the frame portion 4 by bending each end edge inward. Moreover, as shown in FIG. 2, the left wall part 42 and the right wall part 43 are formed in the right-and-left both ends of the frame part 4 by bending each edge inward, respectively. Here, the right side surface of the left wall portion 42 is inclined obliquely upward to the right, and the left side surface of the right wall portion 43 is inclined obliquely upward to the left. The inclined surfaces of the left and right wall portions 42 and 43 are reflecting surfaces 42A and 43A that reflect light emitted from the light source unit 10.

取付板5は、図4(b)に示すように、器具本体2と同じく矩形板状の金属板から成り、その四隅には平面視円形状の取付孔50が貫設されている。ここで、器具本体2の主部3には、上述のように各取付孔50と対応する取付金具34が設けられている。したがって、各取付孔50と各取付金具34のねじ孔とが一致するように取付板5を主部3に重ね、これら取付孔50及び取付金具34のねじ孔に取付ねじS1を挿入して締め付けることで、取付板5が主部3に取付固定されるようになっている。   As shown in FIG. 4B, the mounting plate 5 is made of a rectangular plate-like metal plate like the instrument body 2, and mounting holes 50 having a circular shape in plan view are formed through the four corners. Here, the mounting part 34 corresponding to each mounting hole 50 is provided in the main part 3 of the instrument body 2 as described above. Therefore, the mounting plate 5 is stacked on the main portion 3 so that the mounting holes 50 and the screw holes of the mounting brackets 34 coincide with each other, and the mounting screws S1 are inserted into the mounting holes 50 and the screw holes of the mounting bracket 34 and tightened. Thus, the attachment plate 5 is attached and fixed to the main portion 3.

取付板5の左右方向における中央部には、下向きに突出する断面三角形状の反射部51が上下方向に沿って曲げ加工により形成されている。反射部51は、その傾斜面51Aにより光源部10から発せられる光を反射させて下方へと照射する。これにより、器具本体2の下側の照明空間における照度を高めることができる。   A reflection part 51 having a triangular cross-section projecting downward is formed by bending along the vertical direction at the center in the left-right direction of the mounting plate 5. The reflection part 51 reflects the light emitted from the light source part 10 by the inclined surface 51A and irradiates it downward. Thereby, the illumination intensity in the lower illumination space of the instrument main body 2 can be raised.

取付板5の反射部51を挟んだ左右両側には、1対のユニット用取付孔52を1組として、それぞれ4組のユニット用取付孔52が左右方向に沿って設けられている。各組のユニット用取付孔52は、厚み方向(上下方向)に貫通して設けられており、且つLEDユニット1の取付部材13の各取付孔13Dと重ね合わせることができるように、前後方向に所定の間隔を空けて設けられている。また、各組のユニット用取付孔52のうち前側のユニット用取付孔52の前方には、取付金具13C及びレセプタクルコネクタ15を挿通させるための略矩形状の挿通孔53が厚み方向に貫通して設けられている。   On both the left and right sides of the mounting plate 5 across the reflecting portion 51, a pair of unit mounting holes 52 is provided as one set, and four sets of unit mounting holes 52 are provided along the left-right direction. Each unit mounting hole 52 is provided so as to penetrate in the thickness direction (vertical direction), and in the front-rear direction so that it can be overlapped with each mounting hole 13D of the mounting member 13 of the LED unit 1. They are provided at a predetermined interval. In addition, a substantially rectangular insertion hole 53 through which the mounting bracket 13C and the receptacle connector 15 are inserted penetrates in the thickness direction in front of the front unit mounting hole 52 among the unit mounting holes 52 of each set. Is provided.

以下、LEDユニット1を取付板5に取付ける手順について説明する。先ず、LEDユニット1の取付金具13C及びレセプタクルコネクタ15を取付板5の何れかの組の挿通孔53に挿通させる。その後、当該組のユニット用取付孔52とLEDユニット1の取付孔13Dとを重ね合わせて組立ねじ(図示せず)によってねじ止めすることで、LEDユニット1が取付板5に取付けられる。   Hereinafter, a procedure for attaching the LED unit 1 to the attachment plate 5 will be described. First, the mounting bracket 13 </ b> C and the receptacle connector 15 of the LED unit 1 are inserted into any of the insertion holes 53 of the mounting plate 5. Thereafter, the unit mounting holes 52 and the mounting holes 13D of the LED unit 1 are overlapped with each other and screwed with an assembly screw (not shown), so that the LED unit 1 is mounted on the mounting plate 5.

ところで、本実施形態では、従来の蛍光灯よりもLEDユニット1の方が指向性が強いことに鑑みて、図1に示すように、光源部10を透光性を有する材料から成るカバー14で覆っている。これにより、光源部10から発せられる光の一部をカバー14で屈折させることにより、LEDユニット1から光を拡散して出射できるようにしている。また、光源部10から発せられる光の一部は、カバー14の内壁面で反射して外部へと出射するため、より効果的にLEDユニット1から光を拡散して出射できるようにしている。   By the way, in this embodiment, in view of the fact that the LED unit 1 has higher directivity than the conventional fluorescent lamp, as shown in FIG. 1, the light source unit 10 is covered with a cover 14 made of a material having translucency. Covering. Thereby, a part of the light emitted from the light source unit 10 is refracted by the cover 14 so that the light can be diffused and emitted from the LED unit 1. In addition, a part of the light emitted from the light source unit 10 is reflected by the inner wall surface of the cover 14 and emitted to the outside, so that the light can be more effectively diffused and emitted from the LED unit 1.

更に、本実施形態では、図1に示すように、枠部4の右壁部43(左壁部42)の反射面43A(反射面42A)が水平面との間で為す第1の傾斜角θ1を、反射部51の傾斜面51Aが水平面との間で為す第2の傾斜角θ2よりも小さくしている。これにより、反射面42A,43Aで反射する光は器具本体2の下方へと出射されるのに対して、反射面42A,43Aで反射しない光は器具本体2の外方(左方又は右方)へと出射されるので、第2の傾斜角θ2を小さくすることで照明空間を広げることができる。なお、LEDユニット1の反射部12Bが水平面との間で為す第3の傾斜角θ3は、第1の傾斜角θ1と略等しくするのが望ましい。   Further, in the present embodiment, as shown in FIG. 1, the first inclination angle θ1 formed between the reflecting surface 43A (the reflecting surface 42A) of the right wall portion 43 (the left wall portion 42) of the frame portion 4 and the horizontal plane. Is made smaller than the second inclination angle θ2 formed between the inclined surface 51A of the reflecting portion 51 and the horizontal plane. As a result, the light reflected by the reflecting surfaces 42A and 43A is emitted downward from the instrument body 2, while the light not reflected by the reflecting surfaces 42A and 43A is outside the instrument body 2 (left or right). ), The illumination space can be expanded by reducing the second inclination angle θ2. In addition, it is desirable that the third inclination angle θ3 formed between the reflecting portion 12B of the LED unit 1 and the horizontal plane is substantially equal to the first inclination angle θ1.

ところで、光源部10から発せられる光の一部は、カバー14の内壁面で反射を繰り返すことで上方へと導光される。この光が反射面42A,43Aで反射した場合、反射面42A,43Aが傾斜していることから反射部位よりも外方へと光が出射され、反射部位の下方の照度が低下する虞がある。   By the way, a part of the light emitted from the light source unit 10 is guided upward by being repeatedly reflected on the inner wall surface of the cover 14. When this light is reflected by the reflecting surfaces 42A and 43A, the reflecting surfaces 42A and 43A are inclined, so that the light is emitted outward from the reflecting part, and the illuminance below the reflecting part may decrease. .

そこで、本実施形態では、取付板5において、反射部51と、反射部51の隣に位置するLEDユニット1との間に、図1に示すようにLEDユニット1から出射する光を下方へと反射する第1の平坦面54を設けている。また、取付板5において、反射面43A(反射面42A)と、反射面43A(反射面42A)の隣に位置するLEDユニット1との間に、図1に示すようにLEDユニット1から出射する光を下方へと反射する第2の平坦面55を設けている。   Therefore, in the present embodiment, the light emitted from the LED unit 1 is directed downward between the reflecting portion 51 and the LED unit 1 located next to the reflecting portion 51 in the mounting plate 5 as shown in FIG. A reflective first flat surface 54 is provided. Moreover, in the mounting plate 5, between the reflective surface 43A (reflective surface 42A) and the LED unit 1 located adjacent to the reflective surface 43A (reflective surface 42A), it radiates | emits from the LED unit 1 as shown in FIG. A second flat surface 55 that reflects light downward is provided.

そして、本実施形態では、第2の平坦面55の短手方向(左右方向)の幅寸法D2が、第1の平坦面54の短手方向の幅寸法D1よりも大きくなるように構成している。これにより、光源部10からカバー14を介して上方へと導光された光が各平坦面54,55で反射し、反射面42A,43Aで反射する場合と比較して反射部位の下方へと光が出射されるので、反射部位の下方の照度を確保して均斉度を向上させることができる。   In the present embodiment, the width dimension D2 of the second flat surface 55 in the short direction (left-right direction) is configured to be larger than the width dimension D1 of the first flat surface 54 in the short direction. Yes. As a result, the light guided upward from the light source unit 10 through the cover 14 is reflected by the flat surfaces 54 and 55, and is below the reflecting portion as compared with the case where the light is reflected by the reflecting surfaces 42 </ b> A and 43 </ b> A. Since the light is emitted, the illuminance below the reflecting portion can be secured and the uniformity can be improved.

ところで、取付板5の下面には、枠部4の反射面42A,43Aと同様に、白色塗料を塗装することで反射面を形成するのが望ましい。この場合、枠部4との色合いを統一しつつ容易に反射面を形成することができる。   By the way, it is desirable to form a reflective surface on the lower surface of the mounting plate 5 by applying a white paint, like the reflective surfaces 42A and 43A of the frame portion 4. In this case, the reflective surface can be easily formed while unifying the hue with the frame portion 4.

なお、本実施形態は、8個のLEDユニット1を用いた8灯タイプの照明器具であるが、例えば図5(a),(b)に示すように、4個のLEDユニット1を用いた4灯タイプの照明器具として構成してもよい。この構成においても、上記と同様の効果を奏することができる。   In addition, although this embodiment is an 8-lamp type lighting fixture using the eight LED units 1, as shown to FIG. 5 (a), (b), for example, four LED units 1 were used. You may comprise as a 4-lamp type lighting fixture. Even in this configuration, the same effects as described above can be obtained.

1 LEDユニット
10 光源部
14 カバー
2 器具本体
43A 反射面
5 取付板
51 反射部
51A 傾斜面
54 第1の平坦面
55 第2の平坦面
θ1 第1の傾斜角
θ2 第2の傾斜角
DESCRIPTION OF SYMBOLS 1 LED unit 10 Light source part 14 Cover 2 Instrument main body 43A Reflective surface 5 Mounting plate 51 Reflective part 51A Inclined surface 54 1st flat surface 55 2nd flat surface (theta) 1 1st inclination angle (theta) 2 2nd inclination angle

Claims (1)

長尺板状の実装基板の表面に1乃至複数個の発光ダイオードが実装されて成る光源部、及び透光性を有する材料から成り前記光源部を覆う長尺箱状のカバーを有するLEDユニットと、前記LEDユニットが取付けられる取付板と、前記取付板を介して前記LEDユニットを保持する器具本体とを備え、前記カバーは、前記光源部の長手方向における両端部の少なくとも一部を覆う位置まで形成され、前記器具本体には、前記LEDユニットのうち最も外側に位置する前記LEDユニットと対向する部位に、前記光源部から発せられる光を反射する反射面が形成され、前記取付板には、前記LEDユニットのうち前記取付板の中心部に最も近い2つの前記LEDユニットに挟まれる形で設けられて前記光源部から発せられる光を反射する傾斜面を有する反射部が形成され、前記反射面と水平面との間で為す第1の傾斜角が、前記反射部の傾斜面と水平面との間で為す第2の傾斜角よりも小さく、
前記取付板における前記反射部と前記LEDユニットとの間には第1の平坦面が形成され、前記取付板における前記反射面と前記LEDユニットとの間には第2の平坦面が形成され、前記第2の平坦面は、その短手方向における幅寸法が前記第1の平坦面の短手方向における幅寸法よりも大きくなるように形成されることを特徴とする照明器具
A light source unit in which one or more light emitting diodes are mounted on the surface of a long plate-shaped mounting substrate; and an LED unit having a long box-shaped cover made of a light-transmitting material and covering the light source unit; A mounting plate to which the LED unit is mounted, and an appliance main body that holds the LED unit via the mounting plate, and the cover covers at least a part of both end portions in the longitudinal direction of the light source unit. In the instrument body, a reflection surface that reflects light emitted from the light source unit is formed at a portion facing the LED unit located on the outermost side of the LED units, and the mounting plate has An inclination that reflects light emitted from the light source unit provided between the two LED units closest to the center of the mounting plate among the LED units. Reflecting portion having is formed, the first angle of inclination between the reflecting surface and the horizontal plane, rather smaller than the second angle of inclination between the inclined surface and the horizontal surface of the reflecting portion,
A first flat surface is formed between the reflective portion and the LED unit in the mounting plate, and a second flat surface is formed between the reflective surface and the LED unit in the mounting plate, The lighting apparatus according to claim 1, wherein the second flat surface is formed so that a width dimension in a short direction thereof is larger than a width dimension in a short direction of the first flat surface .
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