200844365 九、發明說明： 【發明所屬之技術領域】 種採用發光二 本發明涉及一種照明裝置，尤其涉及一 極體之照明裝置。 【先前技術】 發光二極體（Light Emitting Diode，LED)，具有環保、 較高之機械可靠性與較高之使用壽命之特點，故採用"led 作為照明裝置之光源為目前之新趨勢。 士请芩閱圖1，其為一種習知長條形之發光二極體照明 I置10 (下稱：LED照明裝置）。LED照明裝置10包括燈 箱11、電路板12、複數侧光式LED 13、反射元件14、複 數反射片i5及擴散片16。燈箱u為中空長條形框體結 構，其具有開口 112。電路板12亦為長條形，相應設置於 燈箱11之底部。複數侧光式LED13電連接排布於電路板 12之上表面。反射元件14亦為箱體結構，其可相應由開 口 112嵌入燈箱u。反射元件14具有複數相互連接之侧 壁142和底面反射板144，且侧壁142及底面反射板144 之内表面均為反射面。底面反射板144開設有對應於複數 LED 13之複數通孔146。複數LED 13之出光部分別穿過 複數通孔146。複數反射片15相應設置於複數LED 13之 頂部。擴散片16封蓋於該燈箱n之開口 112處。複數lED 13所發出之光束經由反射元件14之侧壁142或底面反射 板144反射後’最終通過擴散片16出射。 惟，儘管上述LED照明裝置10中採用LED 13與反 6 200844365 射片15搭配之設計，可使LED 13與擴散片16之間之距 離適當縮小，但LED丨3與擴散片16之間仍需有較大之距 離才能確保從擴散片16出射之光線均勻，因此led照明 裝置10之體積不易進一步縮小’難以適應產品輕薄短小之 發展趨勢。 【發明内容】 鑒於上述内容，有必要提供一種體積較小之昭 明裝置。 … 一種LED照明裝置，其包括燈箱、電路板、與該電 路板電連接之至少一側光式發光二極體、反射元件及燈 盍。該發光二極體包括出光側面及與該出光側面相連之了頁 面。該燈箱包括上蓋、與該上蓋相對之下蓋、複數與該上 蓋和下蓋相連之側壁及開設於其中一側壁之開口。該兩路 板位於燈箱之下蓋’該至少一發光二極體之部分出二 朝向該燈箱之開口，且頂面朝向該上蓋。該反射元件位於 該燈箱内，其用於反射發光二極體產生之光線從該開口處 射出。該燈蓋封蓋於該開口。 "上述LED照明裝置’由於LED之部分出光侧面朝向 燈=之開口，頂面面向燈箱之上蓋，使燈箱在水平方向上 之空間得到充分之利用，而讓燈箱於厚度方向上之空間得 以縮小’因此易於使得LED照明裝置具有較小之體::: 適，電子產品輕薄短小之發展方向；此外’當咖照明裝 置需要均勻之面光源時，由於燈箱在水平方向上之空間得 到充分利用，因此還易於確保LED與燈蓋之間具有足夠^ 7 200844365 距來避免LED未經反射混合之出射光於燈蓋上產生亮點。 【實施方式】 下面將結合附圖及實施例對LED照明裝置做進一步 詳細說明。 請參閱圖2，本發明較佳實施例一之LED照明裝置 20。LED照明裝置20包括燈箱21、電路板22、與電路板 22電連接之複數側光式LED 23、反射元件24及燈蓋25。 燈箱21為中空之長條形框體結構，其包括上蓋211、 與上蓋211相對之下蓋213、複數從下蓋213邊緣向上延 伸之侧壁215，且其中一側壁215上端開設有開口 217。 請同時參閱圖3, LED 23包括基座231、出光側面233 及與出光側面233相連之頂面235。電路板22設置於燈箱 21下蓋213底部，LED 23之部分出光侧面233剛好朝向 燈箱21之開口 217,且頂面235面向燈箱21之上蓋211。 反射元件24用於反射LED 23產生之光線從燈蓋25 射出。反射元件24與燈箱21之結構相匹配，其可由高反 射率塑膠或具高反射率表面之塑膠或金屬材料製成。反射 組件24包括有上反射板241、與上反射板241相對之下反 射板243、複數從下反射板243邊緣向上延伸形成之側反 射板245，及開設於下反射板243上之複數通孔247。上反 射板241、下反射板243及側反射板245配合成具有一與 燈箱21之開口 217相應開口相體結構。每一通孔247分別 與每一 LED 23相對應。本實施例中，LED 23之頂面235 及侧面233相應穿過通孔247,反射組件24之下反射板243 8 200844365 架設於LED 23之基座231上。可以理解，下反射板243 亦可設置於電路板22之表面，LED 23整個穿過通孔247。 燈蓋25可為擴散片，其封蓋於開口 217。 另，本實施例中，為便於避免LED照明裝置20產生 亮點，LED照明裝置20於LED 23與燈箱21開口 217之 間還設置有一透明薄片26及相應於複數LED 23固定於透 明薄片26内側之遮光片27。遮光片27可由高反射率塑膠 或具高反射率表面之塑膠或金屬材料製成。可以理解，遮 光片27亦可以直接固定於燈蓋25面向LED 23之表面或 LED 23之出光侧面233上。 上述LED照明裝置20，由於LED 23之部分出光側面 233朝向燈箱21之開口 217,頂面235面向燈箱21之上蓋 211，使燈箱21於X方向（即水平方向）上之長度空間得到 充分之利用，而讓燈箱21於Y方向（即厚度方向）上之高度 空間得以縮小，因此易於使LED照明裝置20具有較小之 體積，而適應電子產品輕薄短小之發展方向。另，當LED 照明裝置20需要均勻之面光源時，由於燈箱21於X方向 上之長度得到充分之利用，因此還易於確保LED 23與燈 蓋25之間具有足夠間距來避免LED 23未經反射混合之出 射光於燈蓋25上產生亮點。 可以理解，當LED照明裝置20應用於遠場照明時， 燈蓋25還可為透明板。反射組件24還可為塗布在燈箱21 之上蓋211與側壁215内侧面及電路板22上表面上之塗 200844365 • 進一步，為提高LED照明裝置之光學均勻性，遮光 .片之兩側上可設置複數透光孔，透光孔之形狀可為圓形、 擴圓形、多邊形或長條形。請參閱圖4至圖8，本發明較 佳實施例二至六之LED照明裝置之遮光片之示意圖' 如圖4所示’遮光片37上之透光孔37ι為圓形。如 圖5所示，遮光片47上之透光孔471為長條形。如圖6 :::遮光片57上之透光孔571為孤狀長條形。複數透光 71、471、571呈中心對稱分佈，遮光片π、"、” 之中心為複數透光孔371、471、571之對稱中心。 如圖7與圖8所示’遮光片67、77上之複數 671、771之分佈申心為複數透光 且透光孔671、771之尺寸， 之方向逐漸縮小。寸^近_光片67、77之中心 利申合㈣專财件’羞依法提出專 斤处者僅為本發明之較佳實 =範圍並不以上述實施方式為限，舉凡熟悉I;技： ::二於援依本案發明精神所作之等效修飼或變化； 應包含於以下之申請專利範圍内。 白 【圖式簡單說明】 ^ 1係—種習知LED照明裝置之立體分解示意圖。 圖2係本發明較佳實施例一 。 分解示意圖。 …、月衣置之立體 =3係圖2所示LED照明裝置組裝後之剖 圖4至圖8係本發明較佳實施例二至六之咖照明 10 200844365 裝置之遮光片之透光孔分佈示意圖。 【主要元件符號說明】 (本發明） LED照明裝置 20 出光侧面 233 燈箱 21 頂面 235 上蓋 211 反射元件 24 下蓋 213 上反射板 241 侧壁 215 下反射板 243 開口 217 側反射板 245 電路板 22 通孔 247 LED 23 燈蓋 25 基座 231 透明薄片 26 遮光片 27、 37 、 47 、 57 、 67 、 77 透光孔 371 、471 、 571 、 671 、 771 知） LED照明裝置 10 侧壁 142 燈箱 11 底面反射板 144 開口 112 通孑L 146 電路板 12 反射片 15 LED 13 擴散片 16 反射元件 14 11200844365 IX. INSTRUCTIONS: [Technical Field] The invention relates to a lighting device, and more particularly to a lighting device for a polar body. [Prior Art] Light Emitting Diode (LED) has the characteristics of environmental protection, high mechanical reliability and high service life. Therefore, the use of "led as the light source of the lighting device is a new trend. Please refer to FIG. 1 , which is a conventional long strip light emitting diode illumination I 10 (hereinafter referred to as: LED lighting device). The LED lighting device 10 includes a light box 11, a circuit board 12, a plurality of side-light LEDs 13, a reflective element 14, a plurality of reflective sheets i5, and a diffusion sheet 16. The light box u is a hollow elongated frame structure having an opening 112. The circuit board 12 is also elongated and correspondingly disposed at the bottom of the light box 11. The plurality of edge-lit LEDs 13 are electrically connected to the upper surface of the circuit board 12. The reflective element 14 is also a box structure which can be correspondingly embedded in the light box u by the opening 112. The reflective member 14 has a plurality of mutually connected side walls 142 and a bottom reflecting plate 144, and the inner surfaces of the side walls 142 and the bottom reflecting plate 144 are reflecting surfaces. The bottom reflecting plate 144 is provided with a plurality of through holes 146 corresponding to the plurality of LEDs 13. The light exit portions of the plurality of LEDs 13 pass through the plurality of through holes 146, respectively. The plurality of reflection sheets 15 are disposed at the top of the plurality of LEDs 13, respectively. The diffuser 16 is capped at the opening 112 of the light box n. The light beam emitted by the plurality of lEDs 13 is reflected by the side wall 142 of the reflective element 14 or the bottom surface reflection plate 144 and finally exits through the diffusion sheet 16. However, although the LED lighting device 10 is designed to match the LED 13 and the anti-200844365 film 15, the distance between the LED 13 and the diffusion sheet 16 can be appropriately reduced, but the LED 丨3 and the diffusion sheet 16 are still required. A larger distance can ensure that the light emitted from the diffusion sheet 16 is uniform, so that the volume of the LED illumination device 10 is not easily further reduced, which is difficult to adapt to the trend of light, thin and short products. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a small-sized illumination device. An LED lighting device comprising a light box, a circuit board, at least one light-emitting diode electrically connected to the circuit board, a reflective element, and a lamp. The light emitting diode includes a light exiting side and a page connected to the light exiting side. The light box comprises an upper cover, a cover opposite the upper cover, a plurality of side walls connected to the upper cover and the lower cover, and an opening formed in one of the side walls. The two-way board is located at the lower cover of the light box, and the portion of the at least one light-emitting diode is directed toward the opening of the light box, and the top surface faces the upper cover. The reflective element is located in the light box and is configured to reflect light generated by the light emitting diode from the opening. The lamp cover is capped to the opening. "The above LED lighting device's because the part of the LED light-emitting side faces the opening of the lamp=, the top surface faces the upper cover of the light box, so that the space of the light box in the horizontal direction is fully utilized, and the space of the light box in the thickness direction is reduced. 'Therefore, it is easy to make the LED lighting device have a smaller body::: suitable, the development direction of the electronic product is light and thin; in addition, when the coffee lighting device needs a uniform surface light source, since the space of the light box in the horizontal direction is fully utilized, Therefore, it is also easy to ensure that there is enough distance between the LED and the lamp cover to avoid the LEDs from being reflected and mixed on the lamp cover to produce bright spots. [Embodiment] Hereinafter, an LED lighting device will be further described in detail with reference to the accompanying drawings and embodiments. Referring to Figure 2, an LED lighting device 20 in accordance with a preferred embodiment of the present invention. The LED lighting device 20 includes a light box 21, a circuit board 22, a plurality of side-light LEDs 23 electrically connected to the circuit board 22, a reflective element 24, and a lamp cover 25. The light box 21 is a hollow elongated frame structure, and includes an upper cover 211, a cover 213 opposite to the upper cover 211, a plurality of side walls 215 extending upward from the edge of the lower cover 213, and an opening 217 is formed at an upper end of one of the side walls 215. Referring to FIG. 3 at the same time, the LED 23 includes a base 231, a light exiting side 233, and a top surface 235 connected to the light exiting side 233. The circuit board 22 is disposed at the bottom of the lower cover 213 of the light box 21, a portion of the light-emitting side 233 of the LED 23 is just facing the opening 217 of the light box 21, and the top surface 235 faces the upper cover 211 of the light box 21. The reflective element 24 is used to reflect the light generated by the LED 23 from the lamp cover 25. The reflective element 24 is matched to the structure of the light box 21 and may be made of a high reflectivity plastic or a plastic or metallic material having a highly reflective surface. The reflection assembly 24 includes an upper reflection plate 241, a reflection plate 243 opposite to the upper reflection plate 241, a plurality of side reflection plates 245 extending upward from the edge of the lower reflection plate 243, and a plurality of through holes formed on the lower reflection plate 243. 247. The upper reflecting plate 241, the lower reflecting plate 243 and the side reflecting plate 245 are combined to have a corresponding opening structure with the opening 217 of the light box 21. Each of the through holes 247 corresponds to each of the LEDs 23, respectively. In this embodiment, the top surface 235 and the side surface 233 of the LED 23 pass through the through hole 247 correspondingly, and the reflection plate 243 8 200844365 under the reflection assembly 24 is mounted on the base 231 of the LED 23. It can be understood that the lower reflecting plate 243 can also be disposed on the surface of the circuit board 22, and the LED 23 passes through the through hole 247 entirely. The lamp cover 25 can be a diffuser that is capped to the opening 217. In addition, in this embodiment, in order to avoid the LED lighting device 20 from generating bright spots, the LED lighting device 20 is further provided with a transparent sheet 26 between the LED 23 and the opening 217 of the light box 21 and corresponding to the inside of the transparent sheet 26 corresponding to the plurality of LEDs 23. Light shielding sheet 27. The light shielding sheet 27 may be made of a high reflectivity plastic or a plastic or metal material having a highly reflective surface. It can be understood that the visor 27 can also be directly fixed to the surface of the lamp cover 25 facing the LED 23 or the light-emitting side 233 of the LED 23. In the LED lighting device 20, since the light-emitting side surface 233 of the LED 23 faces the opening 217 of the light box 21, the top surface 235 faces the upper cover 211 of the light box 21, so that the length space of the light box 21 in the X direction (ie, the horizontal direction) is fully utilized. Moreover, the height space of the light box 21 in the Y direction (ie, the thickness direction) is reduced, so that the LED lighting device 20 is easy to have a small volume, and is adapted to the development direction of the light and thin electronic products. In addition, when the LED illumination device 20 requires a uniform surface light source, since the length of the light box 21 in the X direction is fully utilized, it is also easy to ensure sufficient spacing between the LED 23 and the lamp cover 25 to prevent the LED 23 from being reflected. The mixed light exits the lamp cover 25 to produce a bright spot. It can be understood that when the LED lighting device 20 is applied to far field illumination, the lamp cover 25 can also be a transparent plate. The reflective component 24 can also be coated on the inner surface of the cover 211 and the side wall 215 of the light box 21 and the upper surface of the circuit board 22 200844365. Further, in order to improve the optical uniformity of the LED lighting device, the shading can be set on both sides of the sheet. The plurality of light-transmissive holes may have a circular shape, an expanded circular shape, a polygonal shape or a long strip shape. Referring to Figures 4 to 8, a schematic view of a light-shielding sheet of the LED lighting device of the preferred embodiments 2 to 6 of the present invention is shown in Fig. 4. The light-transmitting hole 37ι on the light-shielding sheet 37 is circular. As shown in Fig. 5, the light-transmitting holes 471 on the light shielding sheet 47 are elongated. As shown in FIG. 6:: the light-transmitting hole 571 on the light shielding sheet 57 is a strip shape. The plurality of light transmissions 71, 471, and 571 are symmetrically distributed in the center, and the centers of the light shielding sheets π, "," are the centers of symmetry of the plurality of light transmission holes 371, 471, and 571. As shown in Figs. 7 and 8, the light shielding sheet 67, The distribution of the complex number 671 and 771 on the 77 is the size of the plurality of light transmissive and transparent holes 671, 771, and the direction is gradually reduced. The inch ^ near _ light film 67, 77 center Li Shenhe (four) special wealth piece 'shame It is only the preferred embodiment of the present invention that the scope of the invention is not limited to the above-mentioned embodiments, and that it is familiar with I; technology: :: two in the spirit of the invention according to the invention, equivalent feeding or change; It is included in the following patent application. [Simplified illustration of the drawing] ^ 1 is a schematic exploded view of a conventional LED lighting device. Fig. 2 is a preferred embodiment of the present invention. FIG. 4 to FIG. 8 are schematic diagrams showing the distribution of the light transmission holes of the light shielding sheet of the device of the preferred embodiment 2 to 6 of the present invention. [Main components] DESCRIPTION OF SYMBOLS (Invention) LED lighting device 20 light-emitting side 233 Box 21 top surface 235 upper cover 211 reflective element 24 lower cover 213 upper reflector 241 side wall 215 lower reflector 243 opening 217 side reflector 245 circuit board 22 through hole 247 LED 23 lamp cover 25 base 231 transparent sheet 26 light shield 27 , 37 , 47 , 57 , 67 , 77 Light transmission holes 371 , 471 , 571 , 671 , 771 ) LED lighting device 10 side wall 142 light box 11 bottom reflection plate 144 opening 112 through L 146 circuit board 12 reflection sheet 15 LED 13 diffuser 16 reflective element 14 11