200928179 九、發明說明： .【發明所屬之技術領域】 本發明涉及一種固態照明裝置，尤其係一種具有環形 出光面之固態照明裝置。 【先前技術】 目前，具有環形出光面之固態照明裝置一般包括一環 狀之螢光燈管及用以調節該螢光燈管之亮度之一燈罩，該 螢光燈管存在耗電、體積大、壽命不長、無法及時啟動、 ©需要鎮流器才能使光穩定輸出、光源會閃爍等不足之處。 隨著科學技術之發展及進步，發光二極體（Light Emitting Diode，LED)因具光質佳（亦即光源述出之光譜） 及發光效率高等特性而逐漸取代螢光燈管作為照明裝置之 發光元件，具體可參見Michael S. Shur等人在文獻 Proceedings of the IEEE, Vol. 93, No. 10 ( 2005 年 10 月） 中發表之 “Solid-State Lighting: Toward Superior Illumination” 一文。 然而，如何將發光元件元件與固態照明裝置之其他元 件合理搭配，使固態照明裝置更具節能之特性，亦係業者 所面臨之一新的課題。 【發明内容】 下面將以實施例說明一種節能之具有環形出光面之固 態照明裝置。 一種固態照明裝置，包括至少一發光元件、一第一光 學轉向元件、一第二光學轉向元件及一環形之光萃取元 7 200928179 f “第光予轉向兀件具有一容置腔及位於該容置腔頂 ^開口，該料取元件環繞該第二光學轉向元件且兩者 該第★學轉向元件之開口處，以封閉該容置腔， 卒取it件具有设置於該容置腔内之—人光面及與該入 光面相對之-出光面，該至少—發光元件位於該容置腔 内並與該第一光學轉向元件相對，該至少一發光元件所 發出的，、、二由該第_、第二光學轉向元件改變其行進方向 至該光萃取兀件之入光面，並經由該光萃取元件之出光面 射出該固態照明裝置。 與習知技術相比，本發明固態照明裝置設有與發光元 ^牛相配合之第…第二光學轉向元件、環形之光萃取元件 $結構\發光元件發出的光經第—絲轉向元件及第二光 予轉向元件反射，並經由光萃取元件傳至固態照明裝置 外’從而可儘量避免光被吸收，減少光之耗損，使該固態 照明裝置具有良好之節能效果。 公【實施方式】 下面將結合附圖對本發明實施例作進一步之詳細說 明。 、' 〇 圖1與圖2所示為本發明第一較佳實施例之固態照明 裝置10’該固態照明裝置1〇包括一第一光學轉向元件u、 一第二轉向光學元件12、一光源13及一光萃取元件15。 該第一光學轉向元件U具有一容置腔114及設於該容 置腔114頂端之一開口 115，該第一光學轉向元件u位於 容置腔114内之表面為反射面。 8 200928179 該第二光學轉向元件12設於該第一光學轉向元件11 .之開口 115處，該第二光學轉向元件12為圓板狀，其位於 .容置腔114内之表面為反射面，該第二光學轉向元件12外 徑小於該開口 115之大小。 該光萃取元件15呈環形，其同樣設置於該第一光學轉 向元件11之開口 115處，該光萃取元件15環設於該第二 光學轉向元件12之外圍，以封閉該容置腔114。該光萃取 元件15由透光材料製成，如石夕膠（silicone )、樹脂（resin )、 ®玻璃（glass )、壓克力（acrylics，化學名稱為聚曱基丙稀酸 曱酉旨（polymethyl methacrylate，PMMA))、石英（quartz) 等。該光萃取元件15具有位於該第一光學轉向元件11之 容置腔114内之一入光面151及與該入光面151相對之一 出光面152，該出光面152上形成光學微結構，該光學微結 構為鋸齒形凸遠，當光經由該光萃取元件15時，該光萃取 元件15之出光面152上之光學微結構，可發散通過該光萃 ^取元件15的光，並使光於出光面152上均勻分佈，從而使 人眼看起來有霧化之效果而不至於刺眼。當然，該具有光 學微結構之出光面152還可為其他形狀，如圖3所示之本 發明第二較佳實施例之固態照明裝置20，該固態照明裝置 20中之光萃取元件25之出光面252之光學微結構為矩形凸 遠。 請再參照圖2，該光源13設於談第一光學轉向元件11 之容置腔114内，並與該第二光學轉向元件12相對，該光 源13包括一發光元件132。該發光元件132之外圍罩設一 9 200928179 第三光學轉向元件17,該第三光學轉向元件17為透鏡，其 -包括一本體部171及位於該本體部171上端之一頂部172, .該頂部171具有兩相對之傾斜侧面173及相對遠離該本體 部171之頂面17 5，該兩傾斜侧面17 3為透光面，該頂面 175為反射面，該本體部171及該頂部.172之傾斜側面173、 頂面175共同作用，以用來改變發光元件132發出的光之 行進方向。 當固態照明裝置10工作時，收容於第一光學轉向元件 ® 11之容置腔114内之發光元件132發出光，一部分光經過 第三光學轉向元件17之本體部171折射，改變原來之行進 方向直接射向第一光學轉向元件11及第二光學轉向元件 12,另一部分光經過第三光學轉向元件17之本體部171至 頂部172之頂面175，經頂面175反射後由傾斜側面173 折射射出，並改變原來之行進方向至射向第一光學轉向元 件11及第二光學轉向元件12。射向第一光學轉向元件11 ^及第二光學轉向元件12的光再經過第一光學轉向元件11 之内表面及第二光學轉向元件12之下表面一次或多次反射 改變其行進方向，最後沿不同之角度射向該光萃取元件15 之入光面151，並經由該光萃取元件15之出光面152傳至 固態照明裝置10外。對於整個固態照明裝置10而言，可 發光之區域即為該環形之光萃取元件15之部分。 與習知技術相比，該固態照明裝置10、20設有與發光 元件132相配合之第一光學轉向元件11、第二光學轉向元 件12、第三光學轉向元件17及光萃取元件15等結構，使 200928179 光源13發出的光經第三光學轉向^件17之反射及折射， 並經由第—光學轉向元件11及第二光學轉向元件12反射 ，後，最後經由光萃取元件15傳至固態照明裝置1〇、2〇外， 仗而可^里避免光被吸收，減少光之耗損，使固態照明裝 置10 20具有良好之節能效果，同時該光萃取元件15之 出光面152具有光學微結構，可使光均勾分佈於出光面152 上且產生不刺眼之效果。 ❹ 圖j所不為本發明第三較佳實施例之固態照明裝置30 之剖面示意圖，與本發明第一較佳實施例相比，該固態照 月裝置3〇之第—光學元件11内之容置腔114内還填充有 $充物38,該填充物38填滿容置腔114内含有线之部 '該填充物38由透光材料製成，如矽膠、樹脂、玻璃、 堅克力石英等’其折射率與該光萃取元件I5及第三光學 轉向元件17之折射率大致相同，該填充物％之主要作用 係減少光行進路徑中所經過之介面，從而進一步減少光之 ❿耗損。 ^ 上述固態照明裝置10、20、30中之光源13之 、、口構還可為其他形式，如以下實施例。 圖5與圖6所示為本發明第四較佳實施例之固態照明 裝置4〇該光源43包括一圓柱狀之基板431及多個發光元 件432該等發光元件432結合於該基板431之圓周側面 ^從而形成一環狀之放射光源，使發光元件432產生的 光二側向方向出射。相比本發明第一至第三較佳實施例之 固遙照明裝置10、20、30之光源13，本實施例中，該光源 11 200928179 =3上並未&第二光學轉向元件，使得本實施例之固態照明 •裝置40僅用到第―、第二光學轉向元件，就可達到有效出 •光之目的另外，相對單個發光元件，本實施例中之多個 發光元件432亦使得該環狀裝置照明40之亮度增加。 圖7’、® 8所不為本發第五較佳實施例之固態照明 =二?源53包括多個發光元件532，該等發光元 牛2句句排列在一環狀之底板533上，在該環狀之底板 ❿元一圓錐狀（剖面為三角形）之第三光學轉向 “—光學轉向元件57之錐頂設於該底板533 之:央，其錐面為—反射面，以改變由該光源53發出的光 進方向’ ^然’該圓錐狀之第三光學轉向元件57亦可 為透鏡，其錐面為透光面，頂面為反射面，其中光 較佺實施例中基本相同。另外，該固態照明裝 1 U之圓錐狀之第三光學轉向元件57亦可為其他形 式，如圖9所示之本發明第六較佳實施例之固態照明 ❹60,該固態照明裝置⑼中之第三光學轉向元件π包括— 中〜邛671 ’該中心部671設於該光源53之中央，該中、 部仍沿遠離其肩部方向平滑延伸形成一外圍部67^夕= =部仍靠近發光元件532之表面為反射面，面、 圓滑曲面，當然，該反射面亦可為平面。 面為 另外，上述較佳實施例中，該固態照明裝置W、2〇 3〇、40、50、60之環形之光萃取元件15、25(即環形之出 光面）之外形不僅限於圓形，如圖1〇所示之第七較佳實 例令，該環形之光萃取元件75之外形為多邊形，如圖二 12 200928179 所示之第八較佳實施例中，該環形之光萃取元件85之外形 ，為:字架形，如圖12所示之第九較佳實施例中，該環形之 ，光萃取70件95之外形為星形。上述圖10至12所示之第七 至九較佳實施例中，該固態照明裝置之第一、第二光學轉 向元件之形狀亦可對應該光萃取元件75、85、95之外形而 改變。 θ綜上所述，本發明確已符合發明專利之要件，遂依法 _提出專利申明。惟，以上所述者僅為本發明之較佳實施方 式’▲自不能以此限制本案之申請專利範圍。舉凡熟悉本案 技藝之人士援依本發明之精神所作之等效修飾或變化，皆 應涵蓋於以下申請專利範圍内。 【圖式簡單說明】 一圖1為本發明第一較佳實施例之固態照明裝置之立體 示意圖。 圖2為圖1所示固態照明裝置沿π_π線之剖面示意圖。 φ _圖3為本發明第二較佳實施例之固態照明裝置之剖面 示意圖。 圖4為本發明第三較佳實施例之固態照明裝置之剖面 示意圖。 一圖5為本發明第四較佳實施例之固態照明裝置之剖面 示意圖。 圖6為圖5所示固態照明裝置中光源之立體放大示竟 圖。 ^ 圖7為本發明第五較佳實施例之固態照明裴置之剖面 13 200928179 示意圖。 - 圖8為圖7所示固態照明裝置中光源之立體放大示意 .圖。 圖9為本發明第六較佳實施例之固態照明裝置之剖面 示意圖。 圖10為本發明第七較佳實施例之固態照明裝置中之光 萃取元件外形之平面示意圖。 圖11為本發明第八較佳實施例之固態照明裝置中之光 ®萃取元件外形之平面示意圖。 圖12為本發明第九較佳實施例之固態照明裝置中之光 萃取元件外形之平面示意圖。 【主要元件符號說明】 固態照明裝置 10， 20 ， 30 ， 40 ， 50 ， 60 第一光學轉向元件 11 容置腔 114 開口 115 第二轉向光學元件 12 光源 13、 43 發光元件 132、432、532 光萃取元件 15、 25、75、85、95 入光面 151 出光面 152、252 第三光學轉向元件 17、 57 本體部 171 頂部 172 傾斜側面 173 頂面 175 填充物 38 底板 533 中心部 671 外圍部 672 14BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solid-state lighting device, and more particularly to a solid-state lighting device having an annular light-emitting surface. [Prior Art] At present, a solid-state lighting device having an annular light-emitting surface generally includes a ring-shaped fluorescent tube and a lamp cover for adjusting the brightness of the fluorescent tube. The fluorescent tube has power consumption and large volume. , the life is not long, can not start in time, © need ballast to make the light stable output, the light source will flash and other shortcomings. With the development and advancement of science and technology, Light Emitting Diode (LED) has gradually replaced fluorescent tubes as lighting devices due to its excellent light quality (ie, the spectrum of light source) and high luminous efficiency. For a luminescent element, see "Solid-State Lighting: Toward Superior Illumination" by Michael S. Shur et al., Proceedings of the IEEE, Vol. 93, No. 10 (October 2005). However, how to properly align the illuminating element components with other components of the solid state lighting device to make the solid state illuminating device more energy efficient is also a new subject faced by the industry. SUMMARY OF THE INVENTION An energy-saving solid state lighting device having an annular light-emitting surface will be described below by way of example. A solid-state lighting device comprising at least one light-emitting element, a first optical turning element, a second optical turning element and a ring-shaped light extraction element 7 200928179 f "The first light-preserving element has a receiving cavity and is located in the volume a cavity opening, the material is taken around the second optical turning element and the opening of the second steering element to close the accommodating cavity, and the stroke piece has a cavity disposed in the accommodating cavity a human light surface and a light-emitting surface opposite to the light-incident surface, wherein the at least one light-emitting element is located in the accommodating cavity and opposite to the first optical turning element, and the at least one light-emitting element emits The first and second optical turning elements change their traveling direction to the light incident surface of the light extraction element, and emit the solid state lighting device through the light emitting surface of the light extraction element. Compared with the prior art, the solid state lighting of the present invention The device is provided with a second optical turning element, a circular light extracting element, a structure, a light emitted by the light emitting element, and reflected by the first wire deflecting element and the second light pre-steering element. The light extraction element is transmitted to the outside of the solid-state lighting device, so that the light is absorbed as much as possible, and the light loss is reduced, so that the solid-state lighting device has good energy-saving effect. [Embodiment] Hereinafter, embodiments of the present invention will be further described with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE INVENTION Figure 1 and Figure 2 show a solid-state lighting device 10' according to a first preferred embodiment of the present invention. The solid-state lighting device 1 includes a first optical turning element u and a second turning optical element. 12. A light source 13 and a light extraction element 15. The first optical turning element U has a receiving cavity 114 and an opening 115 disposed at a top end of the receiving cavity 114. The first optical turning element u is located in the receiving cavity. The surface of the 114 is a reflective surface. 8 200928179 The second optical turning element 12 is disposed at the opening 115 of the first optical turning element 11 . The second optical turning element 12 is in the shape of a disk and is located in the receiving cavity. The surface of the second optical deflecting element 12 is smaller than the size of the opening 115. The light extraction element 15 is annular, and is also disposed at the opening of the first optical turning element 11 At 15, the light extraction element 15 is disposed around the periphery of the second optical turning element 12 to close the accommodating cavity 114. The light extraction element 15 is made of a light transmissive material, such as silicone, resin. (resin), ® glass, acrylic (chemical name: polymethyl methacrylate (PMMA)), quartz (quartz), etc. The light extraction element 15 has A light incident surface 151 and a light emitting surface 152 opposite to the light incident surface 151 of the accommodating cavity 114 of the first optical turning component 11 form an optical microstructure on the light emitting surface 152, and the optical microstructure is a zigzag convex Further, when the light passes through the light extraction element 15, the optical microstructure on the light exit surface 152 of the light extraction element 15 can diverge the light passing through the light extraction element 15 and evenly distribute the light on the light exit surface 152. So that the human eye looks like a fogging effect and not glaring. Of course, the light-emitting surface 152 having the optical microstructure may have other shapes. As shown in FIG. 3, the solid-state illumination device 20 of the second preferred embodiment of the present invention, the light extraction element 25 of the solid-state illumination device 20 emits light. The optical microstructure of face 252 is rectangularly convex. Referring to FIG. 2 again, the light source 13 is disposed in the accommodating cavity 114 of the first optical turning component 11 and opposite to the second optical turning component 12, and the light source 13 includes a illuminating component 132. The periphery of the illuminating element 132 is provided with a 9 200928179 third optical turning element 17 , which is a lens, which includes a body portion 171 and a top portion 172 at an upper end of the body portion 171 . The 171 has two opposite inclined side surfaces 173 and a top surface 17 5 which is relatively away from the body portion 171. The two inclined side surfaces 17 3 are light transmitting surfaces, and the top surface 175 is a reflecting surface. The body portion 171 and the top portion 172 are The inclined side surface 173 and the top surface 175 cooperate to change the traveling direction of the light emitted by the light emitting element 132. When the solid state lighting device 10 is in operation, the light emitting element 132 received in the accommodating cavity 114 of the first optical turning element 11 emits light, and a part of the light is refracted through the body portion 171 of the third optical turning element 17 to change the original traveling direction. Directly directed to the first optical turning element 11 and the second optical turning element 12, the other portion of the light passes through the body portion 171 of the third optical turning element 17 to the top surface 175 of the top 172, is reflected by the top surface 175, and is refracted by the inclined side surface 173 The light is emitted and the original traveling direction is changed to the first optical turning element 11 and the second optical turning element 12. The light that is directed toward the first optical turning element 11 and the second optical turning element 12 passes through the inner surface of the first optical turning element 11 and the lower surface of the second optical turning element 12 to change its traveling direction by one or more reflections. The light incident surface 151 of the light extraction element 15 is incident at different angles and transmitted to the outside of the solid state lighting device 10 via the light exit surface 152 of the light extraction element 15. For the entire solid state lighting device 10, the illuminable region is part of the annular light extraction element 15. Compared with the prior art, the solid state lighting device 10, 20 is provided with a structure of a first optical turning element 11, a second optical turning element 12, a third optical turning element 17, and a light extracting element 15 that cooperate with the light emitting element 132. The light emitted by the light source 13 is reflected and refracted by the third optical turning member 17 and reflected by the first optical turning element 11 and the second optical turning element 12, and finally transmitted to the solid state lighting via the light extracting element 15. The device 1 〇, 2 〇 , 里 避免 避免 避免 避免 避免 避免 避免 避免 避免 避免 避免 避免 避免 避免 避免 避免 避免 避免 避免 避免 避免 避免 避免 避免 避免 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 光 固态The light can be evenly distributed on the light-emitting surface 152 and the effect of not glare is produced. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic cross-sectional view of a solid state lighting device 30 according to a third preferred embodiment of the present invention, which is compared with the first preferred embodiment of the present invention. The accommodating cavity 114 is also filled with a filling 38, which fills the portion of the accommodating cavity 114 containing the wire. The filling 38 is made of a light transmissive material such as silicone, resin, glass, and crepe. The refractive index of quartz or the like is substantially the same as the refractive index of the light extraction element I5 and the third optical turning element 17, and the main function of the filler is to reduce the interface through which the light travels, thereby further reducing the light loss. . The configuration of the light source 13 in the solid-state lighting devices 10, 20, 30 described above may also be in other forms, such as the following embodiments. 5 and FIG. 6 show a solid-state lighting device 4 according to a fourth preferred embodiment of the present invention. The light source 43 includes a cylindrical substrate 431 and a plurality of light-emitting elements 432. The light-emitting elements 432 are coupled to the circumference of the substrate 431. The side surface is formed to form an annular radiation source, and the light generated by the light-emitting element 432 is emitted in a lateral direction. Compared with the light source 13 of the solid-state lighting device 10, 20, 30 of the first to third preferred embodiments of the present invention, in the embodiment, the light source 11 200928179 = 3 does not have a second optical turning element, so that The solid-state illumination device 40 of the embodiment can achieve the purpose of effectively emitting light only by using the first and second optical turning elements. In addition, the plurality of light-emitting elements 432 in the embodiment also make the light-emitting element 432 The brightness of the ring device illumination 40 is increased. 7A, 8 is not the solid-state illumination of the fifth preferred embodiment of the present invention. The second source 53 includes a plurality of light-emitting elements 532 arranged on a ring-shaped bottom plate 533. In the annular bottom plate, a third optical turn of a conical shape (triangular section) "the cone of the optical turning element 57 is disposed at the center of the bottom plate 533: the center of the cone is a reflective surface to be changed by The light source 53 emits light in the direction of 'the same'. The conical third optical turning element 57 can also be a lens having a tapered surface and a top surface as a reflecting surface, wherein the light is substantially the same as in the embodiment. In addition, the solid optical illumination device 1 may have other forms, such as the solid-state illumination device 60 of the sixth preferred embodiment of the present invention as shown in FIG. 9, in the solid state lighting device (9). The third optical turning element π includes - center 邛 671 '. The center portion 671 is disposed at the center of the light source 53, and the middle portion is still smoothly extended away from the shoulder portion thereof to form a peripheral portion 67 ^ = = = still close The surface of the light-emitting element 532 is a reflecting surface, a surface, a smooth curved surface, of course The reflecting surface may also be a flat surface. In addition, in the above preferred embodiment, the solid-state lighting device W, 2〇3〇, 40, 50, 60 of the annular light extraction elements 15, 25 (ie, the ring-shaped light surface The outer shape is not limited to a circular shape. As shown in the seventh preferred embodiment of FIG. 1A, the annular light extraction element 75 is shaped as a polygon, as shown in the eighth preferred embodiment shown in FIG. The annular light extraction element 85 has an outer shape, which is a font shape. In the ninth preferred embodiment shown in FIG. 12, the annular light extraction 70 member 95 is shaped like a star. The above figures 10 to 12 In the seventh to ninth preferred embodiments shown, the shapes of the first and second optical turning elements of the solid state lighting device may also vary depending on the shape of the light extraction elements 75, 85, 95. The present invention has indeed met the requirements of the invention patent, and the patent application is filed according to the law. However, the above description is only a preferred embodiment of the present invention. ▲There is no way to limit the scope of the patent application in this case. The equivalent of the person in accordance with the spirit of the present invention BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a solid-state lighting device according to a first preferred embodiment of the present invention. FIG. 2 is a solid-state lighting device of FIG. 2 is a schematic cross-sectional view of a solid-state lighting device according to a second preferred embodiment of the present invention. FIG. 4 is a cross-sectional view of a solid-state lighting device according to a third preferred embodiment of the present invention. 4 is a schematic cross-sectional view of a solid state lighting device in accordance with a fourth preferred embodiment of the present invention. Fig. 6 is a perspective enlarged view of a light source in the solid state lighting device of Fig. 5. Fig. 7 is a solid state of a fifth preferred embodiment of the present invention. Schematic diagram of the profile of the lighting device 13 200928179. - Figure 8 is a perspective enlarged view of a light source in the solid state lighting device of Figure 7. Figure 9 is a cross-sectional view showing a solid state lighting device in accordance with a sixth preferred embodiment of the present invention. Figure 10 is a plan view showing the outline of a light extraction element in a solid-state lighting device according to a seventh preferred embodiment of the present invention. Figure 11 is a plan view showing the outline of a light ® extraction element in a solid-state lighting device according to an eighth preferred embodiment of the present invention. Figure 12 is a plan view showing the outline of a light extraction element in a solid-state lighting device according to a ninth preferred embodiment of the present invention. [Main component symbol description] Solid-state lighting device 10, 20, 30, 40, 50, 60 First optical turning element 11 accommodating cavity 114 opening 115 second turning optical element 12 light source 13, 43 light-emitting element 132, 432, 532 light Extraction element 15, 25, 75, 85, 95 Light-incident surface 151 Light-emitting surface 152, 252 Third optical turning element 17, 57 Main body portion 171 Top 172 Inclined side 173 Top surface 175 Filler 38 Base plate 533 Center portion 671 Peripheral portion 672 14