201217703 六、發明說明： 【發明所屬之技術領域】 本發明的實施方式涉及一種將發光二極體（light emitting diode，LED)等的發光元件作為光源且使用導光 板來進行照明的照明器具。 【先前技術】 近年來’伴隨發光二極體（以下，稱作LED)的高輸 出化、高效率化，開發出一種使用LED作為光源的在室内 或室外使用的可期待長壽命化的照明器具。該照明器具是 將多個LED安裝在基板上而獲得規定的亮度，例如，作為 直接安裝在天花板面等的所謂的直接安裝型的基礎照明而 佶用。 ' 然而，從LED出射的光的指向性強且容易產生 ( = ) ’而且，容易產生亮斑。對此，為了抑制眩光並 實現毛光面的均-性的提高，關發 進行照明賴的㈣器具（例如，專敝獻12=板來 面被導先板所覆·、、、月1、本_下扣大致整個[Technical Field] The present invention relates to a lighting fixture that uses a light-emitting element such as a light emitting diode (LED) as a light source and illuminates using a light guide plate. [Prior Art] In recent years, with the increase in output and high efficiency of light-emitting diodes (hereinafter referred to as LEDs), a lighting fixture that can be expected to be used indoors or outdoors using LEDs as a light source has been developed. . In the lighting fixture, a plurality of LEDs are mounted on a substrate to obtain a predetermined brightness, and for example, it is used as a so-called direct-mount type base lighting that is directly mounted on a ceiling surface or the like. However, the light emitted from the LED is highly directional and easily generated (=)', and bright spots are easily generated. In this case, in order to suppress glare and achieve an improvement in the uniformity of the matte surface, the (4) appliance for lighting is turned off (for example, the panel is covered by the guide plate, and the moon is covered by the guide plate). This _down buckle is roughly the whole
[先行技術文獻] [專利文獻J[Advanced Technical Literature] [Patent Document J
[專利文獻1]日本專利特開2_·2膽號公報 S： 4 201217703 [專利文獻2]日本專利特開2009-283197號公報 然而，在所述照明器具中，在將照明器具本體安裝在 適配器的情況下或從適配器卸下的情況下，因適配器的操 作等而必須卸下導光板來進行作業。 此種使用導光板的照明器具中，必須將光入射端面與 LED等的光源相向配置，以使得從LED等的光源出射的 光入射至導光板的光入射端面，因此在伴隨著所述作業的 情況下，會產生所述照明器具的構成複雜化的問題。 【發明内容】 本發明鑒於所述課題而完成，其目的在於提供一種在 將照明器具本體安裝在適配器的情況下或從適配器卸下的 情況下無須卸下導光板便可進行作業，構成簡單且可薄型 化的照明器具。 本發明的一實施方式的照明器具包括：與設置在器具 安裝面的配線器具電性地且機械地連接的適配器，及安裝 在該適配器的器具本體。器具本體包括：與適配器相向而 在大致中央部具有開口且外周部具有光入射端面的導光 板，以出射光入射至該導光板的所述光入射端面的方式而 配設的發光元件，以及對該發光元件進行點燈控制的點燈 裝置。 ·· 【發明的效果】 根據本發明的一實施方式’能夠提供一種在將照明器 具本體安裝在適配器的情況下或從適配器卸下的情況下無 須卸下導光板便可進行作業，構成簡單且可薄型化的照明 201217703 器具。 ▲為讓本發明之上述和其他目的、特徵和優點能更明顯 易懂，下文特舉較佳實施例，並配合所附圖式，作詳細 明如下。 ° 【實施方式】 本貫％方式的照明器具採用如下形式，即，安裳在作 為設置於器具安裝面的配線器具的吊頂體而使用，且使用 導光板來例如進行室内的照明。 以下’參照圖1至圖11來說明本發明的第一實施方 式。各圖中有時省略表示導線等的配線連接關係。另外， 各圖中對相同部分附上相同符號，並省略重複的說明。 圖1至圖4中，照明器具包括器具本體i及與設置在 作為器具絲_天花板面C的吊頂體Cb電性地且機械 地連接的適_ 2 1具本體1如® 1所示形成為大致正 方=狀的外觀，將前表面側作為光的照射面，將背面側作 為安裝在天花板面c的安裝面。 如以圖2為代表而表示，器具本體丨包括點燈裝置3、 支撐底架（support chassis)4、中心底架5、適配器導件 (f刪6、光源部7、導光板8、本體框9及蓋構件1〇。斜 這些構成要素依次進行說明。 _點燈裝置3在箱狀的外殼内收容著電路基板及安裝在 該基板的電路零件而構成，經由適配器2而與商用交^電 源連接，且接收該交流電源而生成直流輪出。因此，ς燈 裝置3與後述的光源部7電性連接，將該直流輸出供給= 201217703 發光元件71，以對發光元件71進行點燈控制。該點燈裝 置3位於並安裝在支樓底架4的背面側（參照圖3 )。 支標底架4由鋁等的金屬材料形成為大致正方形狀， 具有正方形狀的淺盤狀的凹部41，且在該凹部41的各邊 形成著向外側延伸的安裝片42。而且，凹部41的前表面 側作為反射面而構成，此外’在大致中央部 狀的開口…因此’支樓絲4具有反射板的功能。 就像另參照圖5、圖7及圖8而表示那樣，中心底架5 由冷乾鋼板專的金屬材料而形成為大致長方體的箱狀，一 端側、（圖示上、下侧）開放，且在該開放的各邊形成著向 外側沿水平方向延伸的凸緣狀的抵接部51。而且，在另一 端側（圖示上、上侧）形成著圓形狀的開口 52。因此，中 〜底架5整體成為高度低的大致筒狀。抵 ，的背面側的部分，開口 52為供適配器 ^而且，如圖5所示，以支樓底架4的開口 43的周邊部 口於中、底架5的抵接部51的上表面側的方式配置，它 =過炫接等而固接在—起。另外，中心底架5的抵接部 以下烊細敍述般具有增強導光板8的功能。 所述心底架5的側壁的另—端侧，將供連接於 :‘，、、且裝置3的未圖示的電源連接器導出的導出口幻 切成大致四邊形狀而形成。 狀導件6如另參照®5所示，形成為大致八角柱 狀丄且5又置者適配器2插通並卡合於中央部的卡合口 6卜 下端側形成著朝向外方的凸緣部62。該適配器導件6以並 201217703 外周面與中心底架5的内周面接觸的方式配設而安裝著。 適配器導件6上設置著與中心底架5的導出口兄相對應的 開口。 〜 光源部7如圖2、圖4、® 6及圖9 (a)、圖9 (b)所 示，由安裝著發光元件71的基板72、及作為安裝著該基 板72的安裝構件的安裝板73所構成。 基板72如以圖9 (a)、圖9 (b)為代表所示，以橫長 的長方形狀切開兩端而形成為階梯狀，由作為絕緣材料的 玻璃環氧樹月B的平板所構成，表面侧被施以由銅箔形成的 配線圖案。而且’在配線圖案上適當地積層並施以抗姓層。 另外，基板72的材料在設為絕緣材料的情況下，可使用陶 瓷材料或合成樹脂材料。此外，在設為金屬制的情況下， 也可使用鋁等的導熱性良好且散熱性優異的在基底板的一 面積層著絕緣層的金屬制的基底基板。 發光元件71為LED’且為表面安裝型的LED封裝體。 將s亥LED封裝體沿著基板72的長度方向以直線狀排列多 個，具體來說，安裝並配設15個。LED封裝體大致由配 設在以陶瓷或合成樹脂而形成的空腔内的LED芯片、及將 該LED芯片密封的環氧系樹脂或石夕酮（siiic〇ne )樹脂等 的鑄模用的透光性樹脂而構成。 LED芯片為發出藍色光的LED芯片》透光性樹脂中 混入熒光體，為了能夠射出白色光，而使用放射出與藍色 的光存在補色關係的黃色系的光的黃色熒光體。 另外，LED也可將LED芯片直接安裝在基板72上， S； 8 201217703 而且也可安裝炮彈型的LED， 限定。 安裝方式或形式並未作特別 你Γΐ板73由鐘紹或鍍辞鋼板等的導熱良好的材料製 ^成板餘·面形成為大致C型通道雜。在 板乃的内側壁，兩塊基板72通過螺固等以其背 ^ 的方式沿長度方向制而安裝7在一個^ 裝板73上安裝著兩塊基板72而單元化。 本實施方式t，主要如圖2所示，使用四個經單元化 的該光源部7，與導光板8的各邊相對應地配設著。 *導光板8如圖2所示，使用丙烯酸樹脂（acrylicresin) 等的透過率高的材料而形成為四邊形狀的平板狀，且在背 面侧通過印刷而形成著由擴散光的多個白色的反射點構成 的點圖案。此外，在導光板8的大致中央部，以與適配器 導件6的外形相對應、且與適配器2相對應的方式形成著 大致八邊形的開口 81。該大致八邊形的開口 si，典型而言 形成為對四邊形的角部進行倒角後而成的形狀。而且，作 為該導光板8的外周部的四邊形狀的各邊，也就是侧端 面’發揮著供從發光元件71出射的光入射並在導光板8 内前進的光入射端面82的功能。 另外’就導光板8而言，可適當使用在背面側設置著 反射片材的導光板或在前表面側設置著擴散片材的導光 板0 如圖2所示，在此種導光板8的各邊配設著光源部7 的基板72。也就是，以光入射至導光板8的光入射端面82 201217703 的方式，將多個發光元件71在基板72切直線狀排列而 配設。而且’在此情況下，在導光板8物成著開口 81 的外形的邊的延長線L上配置著發光元件71。換 發光元件71位於與發光元件71在基板乃上以直妝° ’ ==該直線正交、且與導光板8的開口 81的外[Patent Document 1] Japanese Patent Laid-Open Publication No. Hei. No. 2009-283197. However, in the lighting fixture, the lighting fixture body is mounted on the adapter. In the case of the adapter or the adapter, it is necessary to remove the light guide plate to perform the operation due to the operation of the adapter. In such a lighting fixture using a light guide plate, it is necessary to arrange the light incident end surface with a light source such as an LED so that light emitted from a light source such as an LED enters the light incident end surface of the light guide plate, and thus the operation is accompanied by the operation. In this case, there is a problem that the configuration of the lighting fixture is complicated. SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object thereof is to provide a configuration in which a light guide plate can be removed without attaching a light guide plate when the luminaire main body is attached to an adapter or detached from an adapter, and the configuration is simple. A light fixture that can be thinned. A lighting fixture according to an embodiment of the present invention includes an adapter that is electrically and mechanically connected to a wiring fixture provided on an appliance mounting surface, and an appliance body that is attached to the adapter. The luminaire includes a light-emitting element that is disposed opposite to the adapter and has an opening at a substantially central portion and a light-incident end surface of the outer peripheral portion, and is configured to emit light to the light-incident end surface of the light guide plate, and The light-emitting element performs a lighting device for lighting control. [Effects of the Invention] According to an embodiment of the present invention, it is possible to provide an operation without attaching a light guide plate when the luminaire main body is attached to an adapter or detached from an adapter, and the configuration is simple and simple. Can be thinned lighting 201217703 appliances. The above and other objects, features, and advantages of the present invention will become more apparent from the aspects of the invention. [Embodiment] The sleek% illuminating device is used in the form of a ceiling body of a wiring device provided on the device mounting surface, and the lighting device is used to illuminate the room, for example. The first embodiment of the present invention will be described below with reference to Figs. 1 to 11 . In each of the drawings, the wiring connection relationship indicating a wire or the like may be omitted. In the drawings, the same portions are denoted by the same reference numerals, and the repeated description is omitted. In FIGS. 1 to 4, the lighting fixture includes an appliance body i and a body 1 that is electrically and mechanically connected to a ceiling body Cb provided as an instrument wire_ceiling surface C, as shown in FIG. The appearance of the substantially square shape is such that the front surface side is the light irradiation surface, and the back surface side is the mounting surface mounted on the ceiling surface c. As represented by FIG. 2, the appliance body 丨 includes a lighting device 3, a support chassis 4, a center chassis 5, an adapter guide, a light source unit 7, a light guide plate 8, and a body frame. 9 and the cover member 1〇. These constituent elements are sequentially described. The lighting device 3 is configured by accommodating a circuit board and circuit components mounted on the substrate in a box-shaped casing, and is connected to the commercial via the adapter 2 The DC power supply unit 7 is electrically connected to the light source unit 7 to be described later, and the DC output is supplied to the light-emitting element 71 to control the light-emitting element 71. The lighting device 3 is located on the back side of the branch chassis 4 (see FIG. 3). The support chassis 4 is formed of a metal material such as aluminum and has a substantially square shape, and has a square-shaped shallow dish-shaped recess 41. Further, a mounting piece 42 extending outward is formed on each side of the recessed portion 41. Further, the front surface side of the recessed portion 41 is configured as a reflecting surface, and the opening is formed in a substantially central portion. Therefore, the branch wire 4 has a reflection. Board work As shown in Fig. 5, Fig. 7, and Fig. 8, the center chassis 5 is formed of a metal material of a cold-drying steel plate into a substantially rectangular parallelepiped box shape, one end side (upper and lower sides in the figure). In the open side, a flange-shaped abutting portion 51 extending in the horizontal direction to the outside is formed, and a circular opening 52 is formed on the other end side (upper side and upper side in the drawing). The middle to the bottom frame 5 as a whole has a substantially low cylindrical shape. The portion on the back side of the abutment, the opening 52 is an adapter, and, as shown in FIG. 5, the peripheral portion of the opening 43 of the branch chassis 4 is provided. It is disposed on the upper surface side of the abutting portion 51 of the middle and the bottom frame 5, and is fixed to the upper portion of the abutting portion 51. The abutting portion of the center chassis 5 has an enhanced guide as described below. The function of the light plate 8. The other end side of the side wall of the hearth frame 5 is formed by morphing the outlet of the power connector (not shown) connected to the device 3 into a substantially quadrangular shape. The guide member 6 is formed as a substantially octagonal columnar cymbal as shown in the other reference to +5, and the 5 is further adapted. The lower end side of the engaging opening 6 that is inserted into and engaged with the central portion is formed with an outwardly facing flange portion 62. The adapter guide 6 is in contact with the inner peripheral surface of the center chassis 5 with the outer peripheral surface of 201217703 The adapter guide 6 is provided with an opening corresponding to the guide port brother of the center chassis 5. ~ The light source unit 7 is as shown in Figs. 2, 4, 6 and 9 (a), Fig. 9 ( b) is composed of a substrate 72 on which the light-emitting element 71 is mounted, and a mounting plate 73 as a mounting member to which the substrate 72 is attached. The substrate 72 is represented by Figs. 9(a) and 9(b). The both ends are formed in a stepped shape by cutting the both ends in a horizontally long rectangular shape, and are formed of a flat plate of a glass epoxy tree B as an insulating material, and a wiring pattern formed of a copper foil is applied to the front surface side. Further, 'the wiring pattern is appropriately laminated and applied with an anti-surname layer. Further, when the material of the substrate 72 is an insulating material, a ceramic material or a synthetic resin material can be used. In addition, when it is made of a metal, it is also possible to use a metal base substrate in which an insulating layer is laminated on one surface of the base plate, which is excellent in thermal conductivity and excellent in heat dissipation. The light-emitting element 71 is an LED' and is a surface mount type LED package. A plurality of LED packages are arranged linearly along the longitudinal direction of the substrate 72, and specifically, 15 are mounted and disposed. The LED package is substantially made of an LED chip disposed in a cavity formed of ceramic or synthetic resin, and a mold for sealing an epoxy resin or a siiic resin such as a resin chip. It is composed of a light resin. The LED chip is a LED chip that emits blue light. A phosphor is mixed in a translucent resin, and a yellow phosphor that emits yellow light having a complementary color relationship with blue light is used in order to emit white light. In addition, the LED can also be mounted directly on the substrate 72, S; 8 201217703 can also be installed with a bullet-type LED, limited. The mounting method or form is not special. Your slab 73 is made of a material with good heat conductivity such as Zhong Shao or a plated steel plate, and the surface of the plate is formed into a substantially C-shaped channel. On the inner side wall of the panel, the two substrates 72 are mounted in the longitudinal direction by screwing or the like, and are mounted on the one mounting plate 73 by uniting the two substrates 72. In the present embodiment t, mainly as shown in Fig. 2, four unitized light source units 7 are used, and are arranged corresponding to the respective sides of the light guide plate 8. * As shown in FIG. 2, the light guide plate 8 is formed into a rectangular plate shape using a material having a high transmittance such as acrylic resin or the like, and a plurality of white reflections of diffused light are formed by printing on the back side. A dot pattern formed by dots. Further, at a substantially central portion of the light guide plate 8, a substantially octagonal opening 81 is formed in correspondence with the outer shape of the adapter guide 6, and corresponding to the adapter 2. The substantially octagonal opening si is typically formed into a shape obtained by chamfering a corner of a quadrangle. Further, each side of the rectangular shape of the outer peripheral portion of the light guide plate 8, that is, the side end surface ' functions as a light incident end surface 82 through which light emitted from the light-emitting element 71 is incident and travels inside the light guide plate 8. Further, in the case of the light guide plate 8, a light guide plate provided with a reflection sheet on the back side or a light guide plate 0 provided with a diffusion sheet on the front surface side can be suitably used as shown in Fig. 2, in the light guide plate 8 The substrate 72 of the light source unit 7 is disposed on each side. In other words, the plurality of light-emitting elements 71 are arranged in a line in a straight line on the substrate 72 so that light enters the light incident end surface 82 201217703 of the light guide plate 8. Further, in this case, the light-emitting element 71 is disposed on the extension line L of the side where the light guide plate 8 is formed into the outer shape of the opening 81. The light-emitting element 71 is located outside the opening 81 of the light guide plate 8 with the light-emitting element 71 on the substrate with a straight line θ ==
本體框9由丙稀腈-丁二烯·笨乙烯共 (Acrylonitrile Butadiene styrene，AB 一―)等的合成樹脂製作，形成= 且比所述導光板8的尺寸更大雜狀，且包㈣壁91 = 壁92，該底壁92具有從該侧壁91的下端部向内側延伸且 傾斜立起賴斜狀部。而且，底壁92上立設著多個 (b〇岣93，該輪轂93上螺固著支撐底架4的安裝片42。又 蓋構件10由丙烯酸樹脂或聚碳酸酯等^ 的合成樹脂材料而形成為大致正方形狀，利 合脫離機構|卸自如地安裝在適配器導件6上 ，、 過安f蓋構件1〇’能夠覆蓋適配器2而不易從下方觀察到。 縣掛刃=圖1〇所示，適配器2借由設置在上表面側的 &，且=機械地連接紐置在天花板面c的吊頂體 且战為大致圓筒狀，在周壁的兩側，一 =置，彈菁而一直朝向外周側突出的方式設置著』 進去^通過對設置在下表面側的操縱杆進行操作而縮 的雷^ 從該適配11 2導出要連_所述點燈裳置3 源線22，並經由連接器23而與點燈裝置3連接。 201217703 然後，主要參照圖4至圖6來說明如所述般構成的器 具本體1的組裝步驟。如所述般，中心底架5以支撐底架 4的開口 43的周邊部重合於該中心底架5的抵接部51的 上表面側的方式而配置，且在該部分通過熔接等而與支撐 底架4固接在一起。並且，光源部7的安裝板73螺固於支 擇底架4，導光板8以其光入射端面82與發光元件71相 向的方式而配設著。 然後’適配器導件6以插通導光板8的開口 81且其外 周面與中心底架5的内周面接觸的方式插入，上表面螺固 於中心底架5的另一端面。該狀態下，將支撐底架4的安 裝片42螺固於本體框9的多個輪轂93，並將蓋構件1〇安 裝在適配器導件6。 根據以上便完成了器具本體1的組裝’但該組裝的順 序並未作特別限定。 此種器具本體1中’如以圖5為代表而表示，中心底 架5的抵接部51抵接於導光板8的背面側。更詳細而言， 中心底架5的抵接部51配设並抵接於導光板8的背面側即 開口 81的周圍。另外’中心底架5的抵接部51的對導光 板8的背面側的抵接，可直接地進行亦可間接地進行。 另外，本實施方式中’表示以支撐底架4的開口 43 的周邊部重合於中心底架5的抵接部51的上表面側的方式 來進行配置的形態，相反地，也可為以中心底架5的抵接 部51重合於支撐底架4的開口 43的周邊部的上表面側的 方式來進行配置的形態。在此情;兄下中心底架5的抵接部 11 201217703 51間接地抵接於導光板8的背面側。也就是，中心底架5 的抵接部51的對導光板8的背面側的抵接，可直接地進行 也可間接地進行。 而且，如以圖5為代表而表示，導光板8的開口 81 的刚表面側的周緣部支撐於適配器導件6的下端侧的凸緣 部62。此外，如以圖6為代表而表示，導光板8的前表面 側的外周緣部支撐於本體框9的底壁92的傾斜狀部。另一 方面，在導光板8的背面側配設著支撐底架4，導光板8 以由支撐底架4與所述適配器導件6的凸緣部62及本體框 9的底壁92的傾斜狀部夾持的方式而配置。在該狀態下， 導光板8的光入射端面82位於與發光元件71相向的位 置’且供從發光元件71出射的光入射。 而且，如圖3、圖4及圖6所示，本體框9的侧壁91 與支撐底架4的安裝片42之間形成著間隙G。即，支撐底 架4的外形小於框狀的本體框9，且遍及支撐底架4的全 周而形成著間隙通過該間隙G，由發光元件71產生的 熱經由女裝板73且在對流作用下散熱。另外，為了促進該 對流作用’也可在本體框9的底壁92形成空氣流通孔。 然後’參照圖10及圖11來說明如所述般構成的照明 器具的對天花板面C的安裝狀態。 如圖10所示，在天花板面c設置著吊頂體Cb。而且， 該吊頂體Cb上電性且機械地連接著適配器2。從該狀態起 如圖示箭頭所示，一邊將適配器2對準器具本體丨的適配 器導件6的卡合口 61，一邊利用手從下方上推器具本體i Ο、 〇 12 201217703 直至適配器2的卡止部21確實卡合於適配器導件6的卡合 口 61為止，由此來進行安裝操作。 、如圖11戶斤示，在器具本體1的安農狀態下，適配器2 插通中心底架5的開口 52，適配器2的卡止部21卡止於 適配器導件6的卡合口 61，設置在支稽絲4的背面側的 ，綿制的襯墊（packing) P發生彈性變形，從而以壓縮狀 態介於在支撐底架4的背面侧與天花板面c之間。 因此，器具本體1不會晃動地牢固地卡合於適配器2, 從而穩定地保持安裝狀態。電性連接是通過如下方式來進 行：將適配器2的連接器23經由適配器導件6及中心底架 5的開口部53等而與連接至點燈裝置3的連接器23連接。 而且在要卸下器具本體1的情況下，在解除所述電 性連接後’ #下蓋構件1G，對設置在適配器2的操縱杆 (lever)進行操作，通過解除適配器2的卡止部的卡合而 能夠卸下器具本體i。 此種器具本體1中，在導光板8形成著開口 8ι，而不 ，成為覆蓋包括適配料件6的卡合叫在_器具本體 的下方的大致整個面的構成。因此，在進行器具本體1 的安裝、#下操作時’為了對適§&器2進行 ，導光板8從11具本體1卸下便可進行作業。此外，適配 °"導件插通導光板8的開口 81而安裝，因此可實現驾且 本體1的薄型化。 。八 ，且在器具本體1的安裝操作中，當利用手從下方 上推器具本體1時，是·手來上鱗光板8 *施加應力， 13 201217703 從而有可能使導光板8變形。尤其如本實施方式所示，因 要對適配器2進行操作，而以與適配器2相對應的方式在 導光板8形成著開口 81的情況，與未形成著開口 81的導 光板相比，存在強度減弱的傾向。 然而，本實施方式中’在中心底架5形成著與導光板 8的背面侧相向的抵接部51，該抵接部51抵接於導光板8 的背面側，因此實現增強導光板8的功能，從而可抑制導 光板8的變形。此外，由於抵接部51配設在導光板8的開 口 81的周圍’所以能夠有效地抑制導光板8的變形。 而且，因中心底架5的抵接部51重合並抵接於對導光 板8的背面側進行支撐的支撐底架4的開口 43的周圍，所 以還具有增強支撐底架4的功能。因此，能夠確實地抑制 支樓底架4的變形、進而抑制導光板8的變形。此外，中 心底架5因形成為箱狀而發揮著支撐底架4的肋部(rib)的 作用’從而增強效果高’且能夠有效地增強平板狀的支撐 底架4。 在照明器具的安裝狀態下，如果對點燈裝置3供給電 力，則經由基板72而使發光元件71通電，從而各發光元 件71點燈。從發光元件71出射的光朝嚮導光板8的光入 射端面82入射，該入射的光在導光板8内全反射後在整個 導光板8擴散’並且通過由形成在背面側的反射點構成的 點圖案而擴散反射並均質化的光從前表面側放射。而且， 從導光板8漏出的一部分光被支撐底架4的反射面所反射 後放射至前表面側而得以再利用。 201217703 而且’由各發光元件71產生的熱從基板72背面側而 傳導至安裝板73，在由本體框9與支撐底架4之間的間隙 G而促進的對流作用下散熱。此外，已傳導至安裝板73 的熱向支撐底架4傳導，並在支撐底架4的大的面積内有 效地散熱。 以上’根據本實施方式，可提供如下的照明器具：因 與適配器2相對應地在導光板8形成著開口 81，所以在將 器具本體1安裝在適配器2的情況下或從適配器2卸下的 情況下無需卸下導光板8便可進行作業，構成簡單且可薄 型化。 / 而且，可提供能夠增強導光板8而抑制變形的照明器 具。 。 ^然後’本發明者對與導光板8的開口 81的形狀相關的 亮度的均一性進行了研究。參照圖12來說明該亮度的均一 性。圖12是示意性地表示從導光板8的發光元件71出射 的光的狀態的平面圖。 “首先’目12巾’在四邊形狀的導光板8的中央部形 者四邊形狀的開σ 8卜而且’安裝在基板72的發光元科 ^月相Λ的/式而西己設在導光板8的一邊的光入射端面8: (說明中僅表不1個發光元件71)。 81 ?'知從發光元件71出㈣光朝向開口 刚進（圖不以虛線表示），並且從前表面侧放 口以的發光元件71侧的角部附近如圖所 二: D。因此，存在導光板8整體的均-性下降的問t 201217703 認為該現象是因如下而引起：朝向開口 81的角部附近 的光Lc中’因角部而引起開口 81 (空氣層）的介入，從 而該光Lc發生折射而妨礙朝嚮導光板8内的前進從而產 生光影’且該光影被反映。 因此’對導光板8的開口 81的形狀進行各種改變並觀 察光的狀態。首先，對方形的角部進行倒角，也就是，對 四邊形的角部進行倒角，從而如所述實施方式那樣，將導 光板8的開口 81的形狀設為大致八邊形的開口 81。 在此情況下，可確認從發光元件71出射的光朝向開口 81前進，且能夠抑制暗部的產生。認為這是因為，通過設 為對開口 81進行倒角而成的形狀，而能夠使角部所引起的 開口 81 (空氣層）的介入減輕。 然後，將導光板8的開口 81的形狀設為圓形狀。在此 情況下，也與所述同樣地，可確認從發光元件71出射的光 朝向圓形狀的開口 81前進’且能夠抑制暗部的產生。認為 這是因為，由於開口 81為圓形狀，所以幾乎不會:胼 引起的開口 81 (空氣層）的介入。 ° 以上的調查的結果可確認，通過將導光板8的開口 Μ 設為將方形的角部進行倒角而成的形狀或圓形狀， =夠抑制暗部的產生’且減輕均—性的降低。另外， 的形狀為圓形狀’並不’正圓形狀，還容許槽圓 =’進行對所述導光板8 _ σ 81附近產生的暗部 進仃抑制的驗證H使發光元件配設在與將發光元 201217703 件71在基板72上以直線狀排列而配設的該直線正交、且 與導光板8的開口 81的外形相切的線上，導光板8上形成 著對四邊形的角部進行倒角而成的開口 81。而且，是在形 成者導光板8的開口 81的外形的邊的延長線上配置著發光 元件71。 因此’從發光元件71出射的光主要沿著外形的邊前 進，因而使如所述般容易產生暗部的部位變亮，從而可有 效地抑制暗部的產生。 作為另一形態’如果將發光元件71配置在形成著導光 板8的圓形開口 81的外形的邊的延長線上，則使容易產生 暗部的部位變亮，從而可有效地抑制暗部的產生。 作為又一形態，將發光元件71配設在與將發光元件 71在基板72上以直線狀排列而配設的該直線正交、且導 光板8的圓形的開口 81的切線上。 在此情況下，從發光元件71出射的光也主要沿著切線 方向刖進，因此使谷易產生暗部的部位變亮，從而可有效 地抑制暗部的產生。 另外’可使用四個經單元化的光源部7，將安裝著發 光元件71的基板72與導光板8的各邊相對應而配設，也 可使用兩個光源部7,將基板72與導光板8的鄰接的兩邊 相對應而配設。此外，可將基板72與導光板8的相向的兩 邊相對應而配設’也可將基板72僅與導光板8的一邊相對 應而配設。 而且，導光板8、中心底架5等的形狀或形態並不限 17 201217703 定於所述實施方式。例如，發光元件71可使用led或有 機電致發光（Electroluminescent，EL )等的固體發光元件。 此外，發光元件71的個數未作特別限定。 然後丄參關13至圖25來制本發明的第二實施方 f。irt施方式與第二實施方式的基本構成是相通的’ 但細卽。p刀的構成猶有不同。第二實施方 實施方式更為具體的構成。 ；比第 靜it Ϊ時省略表示導線等的配線連接關係。另外， ㈣同或相當的部分附上相同符號，並 圖13至圖18中，照明器具包括··器 μ 置在作為器具安裝面的天花板面C的作為配線器且、°又 體Cb電性地且機械地連接的適配器一并圖的吊頂 =2大及勒紅外線遙控發送器R。器具本體1如圖/二及 :成為大致正方形狀的外觀 所不 面，將背面侧作為安裝在天花板面c的安i乍面為先的照射 如以圖2為代表而表示，器具 支標底架4、巾心絲5、適配^導件、=裝置3、 :8、本體框9及蓋構件。而且，包括、導光 輔助零件的輔助零件單元S。 括置耆夕個電氣 點燈裝置3如進一步參照圖！ 具有導熱性的鋁等的金屬 圖，所說明般，被 ，收容於該外_31⑽卜，包括安 路基板32的電路零件33。外殻構件31形成::以 18 201217703 體形狀的薄型的箱狀，在-長邊側與-短邊側形成著沿著 該邊而向外方延伸的凸緣狀的連接部31a。而且，在與一 長邊側相向的長邊侧延伸形成著安裝舌片31b。 電路基板32由玻璃環氧樹脂等的絕緣材料構成，形成 ，大致長方形的板狀，在表面側安裝著控制用1C、電容 器、卷線零件、電阻元件等的電路零件33。而且，設置著 連接至電源側（適配器2側）的電源連接器33a、及用於 連接光源部7的負載連接用連接器33b或用於連接輔助零 件單元S的線束(harness)33c。此外，在電路基板32的背 面侧安裝著開關元件或表面安裝零件等的高度尺寸相對小 的零件。 此種電路基板22如以圖19為代表而表示，圖示上， 將表面側作為下側而由樹脂制固定具32a安裝在外殼構件 31。树脂制固定具32a以前端從外殼構件31的背面侧向前 表面側大·出的方式配置，該樹脂制固定具32a壓入至形成 在電路基板32的安裝孔。如圖15、圖16及圖18所示， 外殼構件31形成得比電路基板32更大，在電路基板32 的女裴狀態下，電路基板32以與凸緣狀的連接部3ia側背 離而配置著。 以上的點燈裝置3如後述般將適配器2側電性連接於 電源連接器33a’並經由適配器2而連接于商用交流電源'。 因此，點燈裝置3接收該交流電源而生成直流輸出，從負 載連接用連接器33b經由導線將該直流輸出供給至光源部 7，從而對發光元件71進行點燈控制。該點燈裝置3位於 201217703 並安裝在支撐底架4的背面側。 处^樓底采4兼用作散熱構件，作為散熱構件而發揮功 L。if底架4由具有導熱性的料的金屬材料形成為具 沾.二交大的面積的大致正方形狀，背面側具有正方形狀 嫌=狀的凹部4卜該凹部41的各邊形成著向外側以階 =工:;伸的安裝片42。而且，凹部41的前表面側構 成為，導光板8進行讀的域面，此外，在大致中央部 形成著四邊形狀的開口 43。 中:絲5與所述域底架4 —體地連結崎成底架 。心底架5由冷軋鋼板等的金屬材料形成為大致長 的ί目狀’-端側（圖示上、下側）開放，且在該開放 =各邊形成著向外_沿水平方向延伸的凸緣狀的抵接部 m端侧（圖示上、上侧）形成著圓形狀 口 52。 a抵接部51為經切底架4 *抵接於導光板8的背面側 的。P分，開σ 52為供適配器2插通的部分。而且，如圖 =所不，中心底架5的抵接部51以從上方重合於支撐底 =4的開〇 43的周邊部的方式而配置，它們由固定機構固 在一起。因此，中心底架5的抵接部51具有增強導光板 8的功能。 、、而且，在中心底架5的側壁的另一端側，將供連接於 所述點燈裝置3的電源連接器咖導出的導出口 53切成大 致四邊形狀而形成。 適配器導件6如另參照圖19而表示，與中心底架5 20 201217703 同樣地，整體形成為高度低的長方體形狀，μ置著適配 器2插通並卡合於巾央料卡合σ 61，下端側設置著朝向 外方的凸緣部62。該適配器導件6以其外周面與中心底架 5的内周面接觸的方式而配設安裝著。而且，在適配器導 件6的側壁，與所述中心底架5的導出〇 53相對應而形成 著導出π 63。此外’適配H導件6包括可裝卸地安裝著蓋 構件10的裝卸機構。 光源部7為與第-實施方式相同的構成，如圖14、圖 18至圖20所示’由安裝著發光元件71的基板72、及作為 安裝著該基板72的安裝構件的安裝板73而構成。 本貫施方式中，主要如圖14所示，使用兩個經單元化 的光源部7 ’與導光板8的相向的兩邊相對應而配設。另 外，該將單元化的光源部7以與導光板8的各邊相對應的 方式而配設，可適當根據設計來進行選擇。 導光板8使用丙烯酸樹脂等的透過率高的材料而形成 為四邊形狀的平板狀，且在背面側的整個面通過印刷而形 成著由擴散光的多個白色的反射點構成的點圖案並且設置 著反射片材。而且’在前表面側的整個面設置著擴散片材。 此外，在導光板8的大致中央部，以與適配器導件6的外 形相對應、且與適配器2相對應的方式形成著四邊形狀的 開口 81。而且’作為該導光板8的外周部的四邊形狀的各 邊，也就是側端面，發揮著供從發光元件71出射的光入射 並在導光板8内前進的光入射端面82的功能。 辅助零件單元S在橫長箱狀的外殼内包括單元基板及 21 201217703 安裝，該基板的多個電氣輔助零件而構成。本實施方式中 的電氣辅助零件為紅外線遙控信號接收部、常明燈或通道 設定開關。 該辅助零件單元s配設在照明器具，也就是器具本體 1的外周緣部，具體來舰設在本體框9的外周緣部。因 此，配設在導光板8的發光區域的外侧。以此方式而構成 2輔助零件單s s將多個電氣獅料集巾化而設置且 安裝在本體框9。 體框9由ABS _或聚碳酸g旨等的合成樹脂製作， =成為大致正方形狀且比所述導歧8的尺寸更大的框 亡，如圖20所示’包括側壁91及底壁％，該底壁％ 二從該側壁91❸下端部朝内侧而向傾斜下方延伸、且進 =步向内湘斜社起的傾斜狀部。而且，錢％上好 ^多個輪轂93 ’該輪較93上_著支撐底架4的安裝^又 ^所述適配器導件6上安裝著蓋構件ig。蓋構件⑴ 等的表示，烯咖旨或聚碳酸酯 材料以前表面側凸出的方式而 大致正方形狀。而且，在前表面側的表面形成著且 有擴散性的功能的多個凹凸。該蓋構件1〇盥 ^、 61相向而可開閉地覆蓋卡合口 61，且可卸下、。“卡口 口 另外，適配器2如® 14及圖21所示p_y 表面側的懸掛刀而電性地且機械地€ 在上 C的吊·，且成為大致圓筒狀 22 201217703 卡止部21以由内置的彈馨 設置著。該卡止部21通4:;2:外周侧突出的方式 操作而縮進去。 1又置在下表面侧的操縱杆進行 而且 電源線22, 器2導出要連接到所述點燈裝置3的 接写23盘、車别端部連接著電源連接器23。該電源連 燈敦置3而導出的電源連接器仏連 Ϊ晉t 2 源連接器23成為插座狀的形態，點燈 裝^側^源連接器仏成為燈座(socket)狀的形態。 、鱼照圖23至圖25來說明此種適配器2侧的電源 7 3與點燈裝置3側的電源連接器33a的連接構成。 首先如圖23所示，在中心底架5的内側，以適配器 )件6的外周面與中心底架5的關面接觸的方式配設著 :玄適配器導件6。在中心底架5與適配器導件6組合的狀 ,4下’如圖24所示’中心底架5的開口 ％與適配器導件 6的卡合口 61對應，而且，中心底架5的導出口 53與適 配器導件6的導出口 63對應。 因此’適配器2可卡合於卡合口 61，且點燈裝置3側 的電源連接器33a可從導出口 53、63導出。 更詳細而言，如圖25所示，從點燈裝置3的電路基板 32由電源線而連接的電源連接器33a，從導出口 53、63 而向中心底架5及適配器導件6的内側導出。並且，在該 電源連接器33a上連接著插通適配器導件6的卡合口 61 的適配器2側的電源連接器23 ( 一併參照圖28)。 紅外線遙控發送器r發送例如頻率為38 kHz的脈衝 23 201217703 狀的經特定編碼的紅外線遙控控制信號，例如設置著全光 點燈按紐、調光點燈按紐、常明燈按紐或滅燈按紐等。通 過將該遙控發送器R朝向辅助零件單元s，也就是紅外線 遙控#说接收部來進行操作，而能夠進行光源部7的發光 兀件71的發光狀態’即，全光點燈、調光點燈、滅燈等的 控制。 於如此構成的照明器具中，如以圖18至圖2〇為代表 而表示發揮著散熱構件的功能的支樓底架4配置在導光 板8的背面側，螺固並安裝在本體框9的多個輪較％上。 該狀態下，支觀架4的安裝片42與統部7的安裝板 的上表面進行面接觸而熱輕合。因此，安裝片成 光源部7與支稽底架4的熱輕合部。 ”” 適配板7開口81的前表面側的周緣部支撐在 表示m的下&側的凸緣部62。如以圖20為代表而 底壁的外周緣部支撐在本體框9的 ♦歧8由支魏架4與所述 部夾==部:2Λ本趙框9的底壁92的傾斜狀 82位㈣發11'下，導歧8㈣入射端面 射的光Μ 相㈣位置，且供從發光元件71出The main body frame 9 is made of a synthetic resin such as acrylonitrile butadiene styrene (AB-), and is formed to have a larger size than the light guide plate 8 and has a wall (four) wall. 91 = wall 92 having a bottom portion extending inward from the lower end portion of the side wall 91 and inclined upright. Further, a plurality of (b〇岣93 are erected on the bottom wall 92, and the mounting piece 42 for supporting the chassis 4 is screwed to the hub 93. The cover member 10 is made of a synthetic resin material such as acrylic resin or polycarbonate. The utility model is formed in a substantially square shape, and the disengagement mechanism is detachably mounted on the adapter guide 6. The over-fitting member 1〇' can cover the adapter 2 and is not easily viewed from below. The county hanging blade=Fig. As shown, the adapter 2 is mounted on the upper surface side & and = mechanically connected to the ceiling body of the ceiling surface c and the battle is substantially cylindrical, on both sides of the peripheral wall, And the protrusion that has been extended toward the outer peripheral side is provided by the operation of the joystick provided on the lower surface side, and the light is diverted from the adapter 11 2 to be connected to the light source 3 And connected to the lighting device 3 via the connector 23. 201217703 Next, the assembly procedure of the fixture body 1 configured as described above will be mainly described with reference to Figs. 4 to 6. As described, the center chassis 5 supports the bottom. The peripheral portion of the opening 43 of the frame 4 coincides with the abutting portion 51 of the center chassis 5 It is disposed in the manner of the upper surface side, and is fixed to the support chassis 4 by welding or the like at this portion. Moreover, the mounting plate 73 of the light source portion 7 is screwed to the support chassis 4, and the light guide plate 8 is lighted by the light guide plate 7 The incident end surface 82 is disposed to face the light-emitting element 71. Then, the adapter guide 6 is inserted through the opening 81 of the light guide plate 8 and the outer peripheral surface thereof is in contact with the inner peripheral surface of the center chassis 5, and the upper surface is inserted. The other end surface of the center chassis 5 is screwed. In this state, the mounting piece 42 supporting the chassis 4 is screwed to the plurality of hubs 93 of the body frame 9, and the cover member 1 is attached to the adapter guide 6. According to the above, the assembly of the luminaire main body 1 is completed. However, the order of the assembly is not particularly limited. In the luminaire main body 1 as shown in FIG. 5, the abutting portion 51 of the center chassis 5 abuts More specifically, the abutting portion 51 of the center chassis 5 is disposed so as to be in contact with the back surface side of the light guide plate 8, that is, the periphery of the opening 81. Further, the abutting portion 51 of the center chassis 5 The contact with the back side of the light guide plate 8 can be performed directly or indirectly. In the present embodiment, 'the embodiment in which the peripheral portion of the opening 43 of the support chassis 4 is superposed on the upper surface side of the abutment portion 51 of the center chassis 5, and conversely, the center bottom may be used. The abutting portion 51 of the frame 5 is disposed so as to overlap the upper surface side of the peripheral portion of the opening 43 of the chassis 4. In this case, the abutting portion 11 of the center chassis 5 is indirectly The contact with the back surface side of the light guide plate 8 of the contact portion 51 of the center chassis 5 can be directly or indirectly performed. As a representative, the peripheral portion of the opening 81 of the light guide plate 8 on the rigid surface side is supported by the flange portion 62 on the lower end side of the adapter guide 6. Further, as shown in Fig. 6, the outer peripheral edge portion on the front surface side of the light guide plate 8 is supported by the inclined portion of the bottom wall 92 of the main body frame 9. On the other hand, a support chassis 4 is disposed on the back side of the light guide plate 8, and the light guide plate 8 is inclined by the flange portion 62 supporting the chassis 4 and the adapter guide 6, and the bottom wall 92 of the body frame 9. The shape is clamped and configured. In this state, the light incident end surface 82 of the light guide plate 8 is located at a position opposite to the light-emitting element 71 and the light emitted from the light-emitting element 71 is incident. Further, as shown in FIGS. 3, 4, and 6, a gap G is formed between the side wall 91 of the main body frame 9 and the attachment piece 42 of the support chassis 4. That is, the outer shape of the support chassis 4 is smaller than the frame-shaped main body frame 9, and a gap is formed through the gap G throughout the entire circumference of the support chassis 4, and the heat generated by the light-emitting element 71 passes through the women's plate 73 and acts in convection. Cool down. Further, in order to promote the convection action, an air flow hole may be formed in the bottom wall 92 of the main body frame 9. Then, the mounting state of the ceiling device C of the lighting fixture configured as described above will be described with reference to Figs. 10 and 11 . As shown in FIG. 10, the ceiling body Cb is provided in the ceiling surface c. Moreover, the ceiling body Cb electrically and mechanically connects the adapter 2. From this state, as shown by the arrow in the figure, while the adapter 2 is aligned with the engagement opening 61 of the adapter guide 6 of the instrument body ,, the device body i Ο, 〇12 201217703 is pushed up from below by the hand until the card of the adapter 2 The stopper 21 is surely engaged with the engagement opening 61 of the adapter guide 6, thereby performing the mounting operation. As shown in FIG. 11 , in the Annon state of the apparatus body 1, the adapter 2 is inserted into the opening 52 of the center chassis 5, and the locking portion 21 of the adapter 2 is locked to the engaging opening 61 of the adapter guide 6, and is set. On the back side of the branch wire 4, the cotton packing P is elastically deformed so as to be interposed between the back side of the support chassis 4 and the ceiling surface c in a compressed state. Therefore, the luminaire main body 1 is firmly engaged with the adapter 2 without swaying, thereby stably maintaining the mounted state. The electrical connection is made by connecting the connector 23 of the adapter 2 to the connector 23 connected to the lighting device 3 via the adapter guide 6, the opening portion 53 of the center chassis 5, and the like. Further, when the appliance body 1 is to be detached, after the electrical connection is released, the #下盖 member 1G operates the lever provided on the adapter 2, and the unlocking portion of the adapter 2 is released. The instrument body i can be removed by the engagement. In the apparatus body 1, the opening 8 is formed in the light guide plate 8, and the configuration is such that the cover including the adapter member 6 is substantially the entire surface of the lower portion of the apparatus body. Therefore, when the installation of the luminaire main body 1 and the operation of the lower part are performed, the light guide plate 8 can be detached from the main body 1 to perform work. Further, the fitting " guide is inserted through the opening 81 of the light guide plate 8, so that the body 1 can be made thinner. . 8. In the mounting operation of the apparatus body 1, when the apparatus body 1 is pushed up from below by the hand, the hand is applied to the stencil 8* to apply stress, and 13 201217703 makes it possible to deform the light guide plate 8. In particular, as shown in the present embodiment, in the case where the adapter 2 is operated, the opening 81 is formed in the light guide plate 8 in a manner corresponding to the adapter 2, and there is strength as compared with the light guide plate in which the opening 81 is not formed. The tendency to weaken. However, in the present embodiment, the abutting portion 51 that faces the back surface side of the light guide plate 8 is formed in the center chassis 5, and the abutting portion 51 abuts against the back side of the light guide plate 8, thereby realizing the enhancement of the light guide plate 8. The function is such that deformation of the light guide plate 8 can be suppressed. Further, since the abutting portion 51 is disposed around the opening 81 of the light guide plate 8, the deformation of the light guide plate 8 can be effectively suppressed. Further, since the abutting portion 51 of the center chassis 5 rejoins and abuts against the periphery of the opening 43 of the supporting chassis 4 that supports the back side of the light guiding plate 8, it also has a function of reinforcing the supporting chassis 4. Therefore, it is possible to surely suppress the deformation of the branch chassis 4 and further suppress the deformation of the light guide plate 8. Further, the center chassis 5 is formed in a box shape to function as a rib for supporting the chassis 4, thereby enhancing the effect of high reinforcement, and can effectively reinforce the flat support frame 4. When power is supplied to the lighting device 3 in the mounted state of the lighting fixture, the light-emitting element 71 is energized via the substrate 72, and each of the light-emitting elements 71 is turned on. The light emitted from the light-emitting element 71 is incident toward the light incident end surface 82 of the light guide plate 8, and the incident light is totally reflected in the light guide plate 8 and diffused throughout the light guide plate 8 and passes through a point formed by a reflection point formed on the back side. The light that is diffused and reflected and homogenized by the pattern is radiated from the front surface side. Further, a part of the light leaked from the light guide plate 8 is reflected by the reflection surface of the support chassis 4, and is radiated to the front surface side to be reused. 201217703 Further, the heat generated by each of the light-emitting elements 71 is conducted from the back surface side of the substrate 72 to the mounting board 73, and is radiated by the convection force promoted by the gap G between the main body frame 9 and the support chassis 4. Further, the heat that has been conducted to the mounting plate 73 is conducted to the support chassis 4, and is efficiently radiated in a large area of the support chassis 4. According to the present embodiment, it is possible to provide a lighting fixture in which the opening 81 is formed in the light guide plate 8 corresponding to the adapter 2, so that the fixture body 1 is attached to the adapter 2 or is detached from the adapter 2 In this case, the operation can be performed without removing the light guide plate 8, and the configuration is simple and the thickness can be reduced. Further, an illuminating device capable of reinforcing the light guide plate 8 to suppress deformation can be provided. . Then, the inventors studied the uniformity of the brightness associated with the shape of the opening 81 of the light guide plate 8. The uniformity of the luminance will be described with reference to Fig. 12 . Fig. 12 is a plan view schematically showing a state of light emitted from the light-emitting element 71 of the light guide plate 8. "Firstly, the head 12" is formed in the shape of the four sides of the four-sided shape of the light guide plate 8 and is mounted on the substrate 72. The light incident end face 8 of one side of 8: (only one light-emitting element 71 is shown in the description) 81. 'About the light-emitting element 71 (4) The light is just entering the opening (not shown by a broken line), and is placed from the front surface side The vicinity of the corner of the light-emitting element 71 on the side of the mouth is as shown in Fig. 2: D. Therefore, there is a problem that the uniformity of the entire light guide plate 8 is lowered. 201217703 This phenomenon is considered to be caused by the fact that the corner is toward the opening 81. In the light Lc, the opening 81 (air layer) is caused by the corner portion, so that the light Lc is refracted to hinder the advancement in the light guide plate 8 to generate a light shadow 'and the light shadow is reflected. Therefore, the pair of light guide plates 8 are reflected. The shape of the opening 81 is variously changed and the state of the light is observed. First, the corner portion of the square is chamfered, that is, the corner portion of the quadrilateral is chamfered, thereby illuminating the light guide plate 8 as in the embodiment. The shape of the opening 81 is set to be substantially octagonal In this case, it is confirmed that the light emitted from the light-emitting element 71 is advanced toward the opening 81, and the occurrence of the dark portion can be suppressed. This is considered to be because the opening 81 is chamfered. The insertion of the opening 81 (air layer) by the corner portion can be reduced. Then, the shape of the opening 81 of the light guide plate 8 is rounded. In this case as well, the light-emitting element can be confirmed in the same manner as described above. The light emitted from the 71 is advanced toward the circular opening 81 and the generation of the dark portion can be suppressed. This is considered to be because the opening 81 has a circular shape, so that the opening 81 (air layer) caused by 胼 is hardly involved. As a result of the investigation, it was confirmed that the opening Μ of the light guide plate 8 is a shape or a circular shape obtained by chamfering the corner portion of the square, and it is possible to suppress the occurrence of the dark portion and to reduce the decrease in uniformity. The shape is a circular shape 'not' a perfect circular shape, and the groove circle=' is allowed to perform verification of the suppression of the dark portion generated in the vicinity of the light guide plate 8 _ σ 81 so that the light-emitting element is disposed in and the light-emitting element In the line of the line 72 which is arranged in a straight line on the substrate 72 and which is orthogonal to the outer shape of the opening 81 of the light guide plate 8, the corner plate of the quadrilateral is chamfered on the light guide plate 8. The opening 81 is formed. The light-emitting element 71 is disposed on an extension of the side of the outer shape of the opening 81 of the light guide plate 8. The light emitted from the light-emitting element 71 is mainly advanced along the side of the outer shape, thereby The portion where the dark portion is easily generated is brightened, and the generation of the dark portion can be effectively suppressed. As another aspect, if the light-emitting element 71 is disposed on an extension of the side of the outer shape of the circular opening 81 in which the light guide plate 8 is formed, Then, the portion where the dark portion is easily generated is brightened, so that the generation of the dark portion can be effectively suppressed. In still another aspect, the light-emitting element 71 is disposed on a tangent line of the circular opening 81 of the light guide plate 8 which is orthogonal to the straight line in which the light-emitting elements 71 are arranged linearly on the substrate 72. In this case, the light emitted from the light-emitting element 71 also mainly propagates in the tangential direction, so that the portion where the valley is likely to generate a dark portion is brightened, and the generation of the dark portion can be effectively suppressed. In addition, four unit light source units 7 can be used, and the substrate 72 on which the light-emitting elements 71 are mounted can be disposed corresponding to each side of the light guide plate 8. Alternatively, the two light source units 7 can be used to guide the substrate 72 and the guide unit. The adjacent sides of the light plate 8 are disposed corresponding to each other. Further, the substrate 72 may be disposed corresponding to both opposite sides of the light guide plate 8. The substrate 72 may be disposed only in correspondence with one side of the light guide plate 8. Further, the shape or form of the light guide plate 8, the center chassis 5, and the like are not limited to those described in the above-mentioned embodiments. For example, the light-emitting element 71 may use a led or solid-state light-emitting element having electroluminescence (EL) or the like. Further, the number of the light-emitting elements 71 is not particularly limited. Then, the second embodiment f of the present invention is manufactured by referring to Fig. 25 to Fig. 25. The irt application mode is the same as the basic configuration of the second embodiment. The composition of the p-knife is different. The second embodiment has a more specific configuration. The wiring connection relationship indicating a wire or the like is omitted when the first static is Ϊ. In addition, (4) the same or equivalent parts are denoted by the same reference numerals, and in FIGS. 13 to 18, the lighting fixture includes a device disposed on the ceiling surface C as the appliance mounting surface as a distributor, and the body Cb is electrically The grounded and mechanically connected adapter is a ceiling of the figure = 2 large and Le infrared remote control transmitter R. The luminaire main body 1 is shown in Fig. 2 and Fig. 2, and has a substantially square shape. The front side of the illuminating surface is mounted on the ceiling surface c. The illumination is as shown in Fig. 2, and the device supports the chassis. 4, towel core 5, adapter ^ guide, = device 3, : 8, body frame 9 and cover member. Moreover, the auxiliary part unit S including the light guiding auxiliary part. Included in the electric lighting device 3 as shown in the figure! A metal pattern such as aluminum having thermal conductivity is housed in the outer layer _31 (10), and includes a circuit component 33 of the circuit board 32. The outer casing member 31 is formed in a thin box shape having a body shape of 18 201217703, and a flange-like connecting portion 31a extending outward along the side is formed on the long side and the short side. Further, a mounting tongue 31b is formed to extend on the long side opposite to the long side. The circuit board 32 is made of an insulating material such as glass epoxy resin, and is formed in a substantially rectangular plate shape, and a circuit component 33 such as a control 1C, a capacitor, a coil component, and a resistor element is mounted on the surface side. Further, a power connector 33a connected to the power source side (adapter 2 side), a load connection connector 33b for connecting the light source unit 7, or a harness 33c for connecting the auxiliary component unit S are provided. Further, on the back side of the circuit board 32, a component having a relatively small height dimension such as a switching element or a surface mounting component is mounted. Such a circuit board 22 is shown as a representative of Fig. 19, and is attached to the outer casing member 31 by a resin fixture 32a with the front side as the lower side. The resin fixture 32a is disposed such that the front end thereof is extended from the back surface side to the front surface side of the outer casing member 31, and the resin fixture 32a is press-fitted into the mounting hole formed in the circuit board 32. As shown in FIG. 15, FIG. 16, and FIG. 18, the outer casing member 31 is formed larger than the circuit board 32, and in the female state of the circuit board 32, the circuit board 32 is disposed away from the flange-like connecting portion 3ia side. With. The above lighting device 3 is electrically connected to the power connector 33a' and connected to the commercial AC power supply via the adapter 2 as will be described later. Therefore, the lighting device 3 receives the AC power supply to generate a DC output, and supplies the DC output from the load connection connector 33b via the wire to the light source unit 7, thereby lighting the light-emitting element 71. The lighting device 3 is located at 201217703 and is mounted on the back side of the support chassis 4. At the bottom of the building, the floor 4 is also used as a heat dissipating member, and functions as a heat dissipating member. The if chassis 4 is formed of a metal material having a heat conductive material into a substantially square shape having a large area, and a concave portion 4 having a square shape on the back side. The sides of the concave portion 41 are formed outward. Step = work:; extension of the mounting piece 42. Further, the front surface side of the concave portion 41 is formed as a domain surface on which the light guide plate 8 is read, and an opening 43 having a rectangular shape is formed at a substantially central portion. Medium: The wire 5 is integrally connected to the domain chassis 4 to form a chassis. The hearth frame 5 is formed of a metal material such as a cold-rolled steel sheet to have a substantially long '-end side (the upper and lower sides of the drawing) open, and the opening = each side is formed outwardly - extending in the horizontal direction A circular opening 52 is formed on the flange-shaped abutting portion m end side (upper side and upper side in the drawing). The abutment portion 51 is in contact with the back side of the light guide plate 8 via the cut frame 4*. P, the opening σ 52 is the portion through which the adapter 2 is inserted. Further, as shown in Fig. =, the abutting portion 51 of the center chassis 5 is disposed so as to overlap the peripheral portion of the opening 43 supporting the bottom = 4 from above, and they are fixed by the fixing mechanism. Therefore, the abutting portion 51 of the center chassis 5 has a function of reinforcing the light guide plate 8. Further, on the other end side of the side wall of the center chassis 5, an outlet port 53 through which the power connector connected to the lighting device 3 is led is cut into a substantially square shape. The adapter guide 6 is also shown in FIG. 19, and is formed into a rectangular parallelepiped shape having a low height as in the case of the center chassis 5 20 201217703, and the adapter 2 is inserted and engaged with the towel material engagement σ 61. The lower end side is provided with a flange portion 62 that faces outward. The adapter guide 6 is disposed such that its outer peripheral surface is in contact with the inner peripheral surface of the center chassis 5. Further, on the side wall of the adapter guide 6, the lead π 63 is formed corresponding to the lead-out 〇 53 of the center chassis 5. Further, the 'fit H guide 6' includes a detachable mechanism to which the cover member 10 is detachably attached. The light source unit 7 has the same configuration as that of the first embodiment, and is shown by the substrate 72 on which the light-emitting element 71 is mounted and the mounting plate 73 as the mounting member to which the substrate 72 is attached, as shown in FIGS. 14 and 18 to 20 . Composition. In the present embodiment, as shown in Fig. 14, mainly, two unitized light source units 7' are disposed corresponding to opposite sides of the light guide plate 8. Further, the unit light source unit 7 is disposed so as to correspond to each side of the light guide plate 8, and can be appropriately selected according to the design. The light guide plate 8 is formed into a flat plate shape having a rectangular shape using a material having a high transmittance such as an acrylic resin, and a dot pattern composed of a plurality of white reflection points of diffused light is formed by printing on the entire surface on the back surface side. Reflecting sheet. Further, a diffusion sheet is provided on the entire surface on the front surface side. Further, in a substantially central portion of the light guide plate 8, a quadrangular opening 81 is formed in correspondence with the outer shape of the adapter guide 6, and corresponding to the adapter 2. Further, each side of the rectangular shape of the outer peripheral portion of the light guide plate 8, that is, the side end surface, functions to allow the light emitted from the light-emitting element 71 to enter and enter the light incident end surface 82 in the light guide plate 8. The auxiliary component unit S includes a unit substrate and a 21 201217703 mounted in a horizontally long box-shaped casing, and is composed of a plurality of electrical auxiliary components of the substrate. The electric auxiliary component in the present embodiment is an infrared remote control signal receiving unit, a constant light or a channel setting switch. The auxiliary component unit s is disposed in the lighting fixture, that is, the outer peripheral edge portion of the fixture body 1, and specifically, the ship is provided on the outer peripheral edge portion of the main body frame 9. Therefore, it is disposed outside the light-emitting region of the light guide plate 8. In this manner, the auxiliary part sheets s s are provided in a plurality of electric lions and are attached to the main body frame 9. The body frame 9 is made of synthetic resin of ABS_ or polycarbonate, and has a substantially square shape and a larger size than the size of the guide 8, as shown in FIG. 20' including the side wall 91 and the bottom wall % The bottom wall %2 extends obliquely downward from the lower end portion of the side wall 91 toward the inner side, and enters the inclined portion which is inward toward the inner oblique. Moreover, the money is good. The plurality of hubs 93' are mounted on the upper and lower sides of the support frame 4, and the cover member ig is mounted on the adapter guide 6. The cover member (1) or the like is substantially square in such a manner that the olefin or the polycarbonate material protrudes from the front surface side. Further, a plurality of irregularities having a diffusing function are formed on the surface on the front surface side. The cover members 1 〇盥 , 61 are opposed to each other to cover the engagement opening 61 in an openable and closable manner, and are detachable. "In addition, the adapter 2 is electrically and mechanically suspended from the C on the upper surface side of the p_y surface side as shown in Fig. 21 and Fig. 21, and is substantially cylindrical 22 201217703 locking portion 21 It is provided by the built-in spring. The locking portion 21 is retracted by the operation of the outer peripheral side. The lever is placed on the lower surface side and the power cord 22, the outlet 2 is connected to be connected. The lighting device 3 is connected to the 23-disc and the end of the vehicle is connected to the power connector 23. The power connector that is connected to the lamp 3 and the power connector is connected to the T2 source connector 23 in a socket shape. The light source mounting side side source connector 仏 is in the form of a socket. The fish and the power supply connector on the side of the lighting device 3 on the adapter 2 side will be described with reference to Figs. 23 to 25 . First, as shown in Fig. 23, on the inner side of the center chassis 5, the outer peripheral surface of the adapter member 6 is placed in contact with the closing surface of the center chassis 5 so as to be disposed. The central chassis 5 is combined with the adapter guide 6, 4 under 'as shown in Fig. 24', the opening % of the central chassis 5 and the adapter The engaging opening 61 of the guide 6 corresponds to each other, and the outlet 53 of the center chassis 5 corresponds to the outlet 63 of the adapter guide 6. Therefore, the adapter 2 can be engaged with the engaging opening 61 and the power supply on the lighting device 3 side. The connector 33a can be led out from the outlets 53, 63. More specifically, as shown in Fig. 25, the power connector 33a connected from the circuit board 32 of the lighting device 3 by the power supply line is guided from the outlets 53, 63. The power supply connector 23 is connected to the inner side of the center chassis 5 and the adapter guide 6. The power connector 23 on the adapter 2 side of the engagement opening 61 of the adapter guide 6 is connected to the power connector 33a (see FIG. 28). The infrared remote control transmitter r transmits a specially coded infrared remote control signal such as a pulse of 23 kHz at a frequency of 38 kHz, for example, a full light button, a dimming button, a constant light button or By turning off the light-emitting button, etc., by operating the remote control transmitter R toward the auxiliary component unit s, that is, the infrared remote control #receiving portion, the light-emitting state of the light-emitting element 71 of the light source unit 7 can be performed. Lighting, dimming lighting In the lighting fixture having the above-described configuration, the branch chassis 4 that functions as a heat radiating member is disposed on the back side of the light guide plate 8 as represented by FIG. 18 to FIG. And mounted on a plurality of wheel % of the main body frame 9. In this state, the mounting piece 42 of the gantry 4 is in surface contact with the upper surface of the mounting plate of the unit 7 to be thermally coupled. Therefore, the mounting piece is a light source. The portion 7 of the front surface side of the opening 81 of the adapter plate 7 is supported by a flange portion 62 on the lower & side of the m. As shown in FIG. The outer peripheral edge portion of the bottom wall is supported by the main body frame 9 and the yoke 8 is arranged by the support frame 4 and the portion of the bottom wall 92 of the frame 9 of the frame. The guide 8 (four) is incident on the entrance end of the pupil phase (four) position, and is provided for output from the light-emitting element 71
天花21來說明如所述般構成的照明器具的對 穴化板面C的安裝狀態。 W 在天花板面C設置著吊頂體cb。而且，該吊頂體Cb S； 24 201217703 地賴械地連接著適配器2。該狀態下將適 侧的電源連接器23連接到點p梦番1 "认兩 33a。 丧剡點燈裝置3側的電源連接器 =4’-邊將適配器2對準器具本體丨的適配器導件 卡。口 6卜—邊利用手從下方來上推II具本體1直至 適配器2的卡止部21確實卡合於雜料件6的卡合口 61為止，由此來進行安裝操作。 在器具本體1的安裝狀態下，適配器2插通中心底架 5的開口 52，適配器2的卡止部21卡止於適配器導件^ 的卡合口 61，設置在支撐底架4的背面侧的海綿制的襯墊 P發生彈性變形，從而以壓縮狀態介於支撐底架4的背面 侧與天花板面C之間。因此，器具本體丨不會晃動地牢固 地卡合於適配器2，從而穩定地保持安裝狀態。 在此種器具本體1的安裝操作中，當利用手從下方上 推器具本體1時，是利用手來上推導光板8而施加應力， 從而有可能使導光板8變形。 然而，在中心底架5形成著與導光板8的背面側相向 的抵接部51，該抵接部51抵接於導光板8的背面側，因 此實現增強導光板8的功能，從而可抑制導光板8的變形。 而且，本實施方式中，中心底架5的抵接部51重合並 抵接於對導光板8的背面側進行支撐的支撐底架4的開口 43的周圍’因此還具有增強支撐底架4的功能。因此，能 夠確實地抑制支撐底架4的變形、進而抑制導光板8的變 形。此外’中心底架5形成為箱狀而使增強效果高，且能 25 201217703 夠有效地增強平板狀的支撐底架4 β 如此，中心底架5—併具有增強導光板8的功能及利 用導出口 33a導出電源連接器33a的功能。 如以上般，根據本實施方式，可提供如下照明器具： 因與適配器2相對應而在導光板8形成著開口 81，所以在 將器具本體1女裝在適配器2的情況下或從適配器2卸下 的情況下，無需卸下導光板8便可進行作業，並且可薄型 化。而且，實現可增強導光板8而抑制變形的效果。 本發明並不限定於所述各實施方式的構成，可在不脫 離發明的主旨的範圍内進行各種變形。而且，所述各實施 方式是作為一例而提示，但並非旨在限定發明的範圍。 所述各實施方式中，對使用形成為四邊形狀的導光 板，且發光面形成為大致四邊形狀的情況進行了說明，但 也可構成為例如使導光板形成為六邊形或八邊形等，與這 些各邊相對應地配置發光元件，且使本體框形成為圓= 狀，以導光板的發光面呈圓形狀露出的方式，來形成 狀的發絲。 _ 【圖式簡單說明】 圖1是表示本發明的第一實施方式的照明器具的立 圖0 肢 圖2是將該照明器具分解而表示的立體圖。 圖3是從背面側觀察該器具本體而表示的立體圖。 圖4是沿著圖3中X-X線而表示的剖面圖。 圖5是表示圖4中的A部的放大圖。The ceiling 21 describes the mounting state of the holed plate surface C of the lighting fixture constructed as described above. W The ceiling body cb is provided on the ceiling surface C. Moreover, the ceiling body Cb S; 24 201217703 is attached to the adapter 2 in a mechanical manner. In this state, the power connector 23 on the appropriate side is connected to the point p dream 1 " recognize two 33a. Power connector on the side of the funeral lighting device 3 = 4' - Align the adapter 2 with the adapter guide card of the instrument body 丨. The mouth 6b is pushed up from below by the hand until the locking portion 21 of the adapter 2 is surely engaged with the engaging opening 61 of the miscellaneous member 6, thereby performing the mounting operation. In the mounted state of the apparatus body 1, the adapter 2 is inserted into the opening 52 of the center chassis 5, and the locking portion 21 of the adapter 2 is locked to the engagement opening 61 of the adapter guide, and is disposed on the back side of the support chassis 4. The sponge pad P is elastically deformed so as to be interposed between the back side of the support chassis 4 and the ceiling surface C in a compressed state. Therefore, the fixture body 牢固 is securely engaged with the adapter 2 without swaying, thereby stably maintaining the mounted state. In the mounting operation of the apparatus body 1, when the apparatus body 1 is pushed up from below by the hand, the light guide plate 8 is pushed up by the hand to apply stress, and the light guide plate 8 may be deformed. However, the center chassis 5 is formed with an abutting portion 51 that faces the back surface side of the light guide plate 8, and the abutting portion 51 abuts against the back side of the light guide plate 8, thereby realizing the function of reinforcing the light guide plate 8, thereby suppressing The deformation of the light guide plate 8. Further, in the present embodiment, the abutting portion 51 of the center chassis 5 is rejoined and abuts against the periphery of the opening 43 of the support chassis 4 that supports the back side of the light guide plate 8, thus also having the reinforcing support chassis 4. Features. Therefore, the deformation of the support chassis 4 can be surely suppressed, and the deformation of the light guide plate 8 can be suppressed. In addition, the 'central chassis 5 is formed in a box shape to enhance the reinforcing effect, and the energy can be effectively enhanced by 25 201217703. The central chassis 5 has the function of enhancing the light guide plate 8 and utilizing the guide. The outlet 33a derives the function of the power connector 33a. As described above, according to the present embodiment, it is possible to provide a lighting fixture in which an opening 81 is formed in the light guide plate 8 corresponding to the adapter 2, so that the appliance body 1 is worn in the case of the adapter 2 or unloaded from the adapter 2 In the case of the lower case, the work can be performed without removing the light guide plate 8, and the thickness can be reduced. Moreover, the effect of suppressing the deformation of the light guide plate 8 can be achieved. The present invention is not limited to the configurations of the respective embodiments described above, and various modifications can be made without departing from the spirit and scope of the invention. Further, each of the above embodiments is presented as an example, but is not intended to limit the scope of the invention. In each of the above embodiments, the case where the light guide plate formed into a rectangular shape is used and the light-emitting surface is formed into a substantially rectangular shape has been described. However, for example, the light guide plate may be formed in a hexagonal shape or an octagonal shape. The light-emitting elements are arranged in correspondence with the respective sides, and the body frame is formed into a circular shape, and the hair-emitting surface is formed such that the light-emitting surface of the light guide plate is exposed in a circular shape. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing a lighting fixture according to a first embodiment of the present invention. Fig. 2 is a perspective view showing the lighting fixture in an exploded manner. Fig. 3 is a perspective view showing the main body of the device as viewed from the back side. Fig. 4 is a cross-sectional view taken along line X-X of Fig. 3. Fig. 5 is an enlarged view showing a portion A in Fig. 4;
S 26 201217703 圖6是表示圖4中的B部的放大圖。 圖7是表示該器具本體的令心底架的立 件的該器具本體的發光元 口 ν I aj為正視圖，圖9 盔L / ,、 圖1〇是袅干將兮昭犯-θ 為上側視圖。 剖面^ 絲在天花板㈣狀態的 圖11同樣是表示將照明器具安裝在 完成狀態的剖面圖。 浐在天化板面的安裝 圖U是示意性地表示從該器具本體的 元件出射的光的狀態的平面圖。 尤板的發先 體圖圖13是表示本發明的第二實施方式的照明器具的立 圖14是將該照明H具分解而表示的立 圖15 ^:從背面峨察邮具本體喊 圖16Λ從背面側觀察該器具本體而表二=。 —圖17=在將該器具本體安裝在適配器的狀 蓋構件而由前表面側觀察而表示的平面圖。〜、Ρ下 圖18是表示該器具本體的剖面圖。 圖19是表示圖18中的Α部的放大圖。 圖2〇是3表示圖18中的B部的放A圖。 圖21是表示將該照明器具 剖面圖。 在天化板面的狀態的 圖22是由前表面側觀察該器具本體的點燈裝置而表 27 201217703 示的立體圖。 圖23是表示該器具本體的中心底架及適配器導件的 立體圖。 圖24是用以說明點燈裝置側的電源連接器與適配器 側的電源連接器的連接關係的立體圖。 圖25同樣是用以說明點燈裝置側的電源連接器與適 配器側的電源連接器的連接關係的立體圖。 【主要元件符號說明】 1 :器具本體 2 :適配器 3 :點燈裝置 4:支撐底架 5 :中心底架 6:適配器導件 7 :光源部 8 :導光板 9 :本體框 10 :蓋構件 21 :卡止部 22 :電源線 23 :電源連接器 31 :外殼構件 31a :凸緣狀的連接部 31b :安裝舌片 S: 28 201217703 32 :電路基板 32a :樹脂制固定具 33 :電路零件 33a :電源連接器 33b :負載連接用連接器 33c :線束 41 :凹部 42 :安裝片 43 :支撐底架的開口 51 :抵接部 52 :中心底架的開口 53 :中心底架的導出口 61 :卡合口 62 :下端侧的凸緣部 63 :適配器導件的導出口 71 :發光元件 72 :基板 73 :安裝構件（安裝板） 81 :導光板的開口 82 :光入射端面 91 :側壁 92 :底壁 93 :輪轂 C:器具安裝面（天花板面） 29 201217703S 26 201217703 Fig. 6 is an enlarged view showing a portion B in Fig. 4 . Fig. 7 is a front elevational view showing the illuminating element opening ν I aj of the luminaire main body of the apparatus body, and Fig. 9 is a top view of the helmet L / , and Fig. 1 〇 袅 兮 - θ θ θ. Fig. 11 is a cross-sectional view showing the state in which the lighting fixture is mounted in a state in which the wire is in the ceiling (four) state. Mounting on the surface of the slabs Fig. U is a plan view schematically showing the state of light emitted from the elements of the luminaire body. Fig. 13 is a perspective view showing a lighting fixture according to a second embodiment of the present invention. Fig. 14 is an exploded view showing the illumination H. Fig. 15: Looking at the mail body from the back. The appliance body was viewed from the back side and Table 2 =. Fig. 17 is a plan view showing the device body attached to the cover member of the adapter and viewed from the front surface side. 〜,Ρ下 Fig. 18 is a cross-sectional view showing the main body of the device. Fig. 19 is an enlarged view showing a crotch portion of Fig. 18; Fig. 2A is a view showing a portion A of the portion B in Fig. 18. Figure 21 is a cross-sectional view showing the lighting fixture. Fig. 22 is a perspective view showing the lighting device of the luminaire main body viewed from the front surface side, and is shown in Table 27 201217703. Figure 23 is a perspective view showing the center chassis and the adapter guide of the device body. Fig. 24 is a perspective view for explaining a connection relationship between a power connector on the lighting device side and a power connector on the adapter side. Fig. 25 is also a perspective view for explaining the connection relationship between the power connector on the lighting device side and the power connector on the adapter side. [Main component symbol description] 1 : Appliance body 2 : Adapter 3 : Lighting device 4 : Supporting chassis 5 : Center chassis 6 : Adapter guide 7 : Light source portion 8 : Light guide plate 9 : Main body frame 10 : Cover member 21 : locking portion 22 : power supply line 23 : power supply connector 31 : outer casing member 31 a : flange-shaped connecting portion 31 b : mounting tongue S : 28 201217703 32 : circuit board 32a : resin fixing fixture 33 : circuit component 33a : Power connector 33b: load connection connector 33c: wire harness 41: recess 42: mounting piece 43: opening 51 supporting the chassis: abutting portion 52: opening 53 of the center chassis: outlet port 61 of the center chassis: card Fitting 62: flange portion 63 on the lower end side: outlet port 71 of the adapter guide: light-emitting element 72: substrate 73: mounting member (mounting plate) 81: opening 82 of the light guide plate: light incident end face 91: side wall 92: bottom wall 93 : Hub C: Appliance mounting surface (ceiling surface) 29 201217703
Cb :配線器具（吊頂體） D :暗部 G :間隙 Lc :光 P :襯墊 R:紅外線遙控發送器 S:輔助零件單元Cb : Wiring device (ceiling body) D : Dark part G : Clearance Lc : Light P : Pad R: Infrared remote control transmitter S: Auxiliary part unit