200848657 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種照明裝置，特別關於一種利用發光 二極體作為發光源的照明裝置。 【先前技術】 發光二極體(Light Emitting Diode，LED)，是一種半導 體元件，初時多作為指示燈以及戶外顯示板之光源。.它被 譽為二十一世紀的新型光源，具有效率高、壽命長以及不 易破損等傳統光源無法達到的優點。 發光二極體可將電能轉換為光能，也就是對發光二極 體施加電流，透過電子與電洞的結合，過剩的能量會以光 的形式釋出，達成發光的效果，屬於冷性發光，壽命長達 十萬小時以上。因此，若發光二極體能夠應用於照明裝置 上，係為照明裝置之一大進步。 請參考圖1所示，其係為習知照明裝置1之一示意 圖。照明裝置1包含有一燈罩11、複數發光二極體元件 12以及一電路板13。其中，發光二極體元件12係設置於 電路板13，燈罩11係與電路板13固定。 由圖1中圓形放大部分可知，各發光二極體元件12 係包含一發光二極體晶片121、一封裝體122、一摻雜於 封裝膠體122中之螢光體123及一導線架124。其中，發 光二極體晶片121係設置於導線架124，導線架124再與 電路板13電性連接，而封裝體122係包覆發光二極體晶 5 200848657 片121。以發光一極體晶片121為監色發光二極體晶片， 且螢光體123為黃色螢光體時，發光二極體晶片121所發 出的藍光與黃色螢光體123激發後產生的黃光混光後，則 發出白光而射出照明裝置1。其中，螢光體123係具有一 受光側123a及一出光側123b，發光二極體元件12所發射 之光線係經由受光側123a進入螢光體123,由出光側123b 射出此照明裝置1。 就照明裝置1而言，使用者觀察到的光線係來自於出 光側123b，但發光二極體元件12發光最強的地方則是在 發光二極體晶片121所發出的光激發螢光體123的地方， 也就是位於封裝體122之受光側123a。由此可知，使用者 由出光側123b所看到的光線，反而不是發光二極體元件 12最亮的地方。 因此，如何改變照明裝置i之結構設計，進而提升以 發光二極體為光源之照明裝置的發光效率係為一重要課 題0 【發明内容】 有鑑於上述課題，本發明之目的為提供一種具有較佳 發光效率的照明裝置。 緣是’為達上述目的，依據本發明之照明裝置包含有 反射元件、一波長轉換層及一發光二極體。其中，反射 元件係具有一反射面。波長轉換層係設置於反射元件之反 射面。發光二極體係設置於反射元件之一側並發射一光 6 200848657 線0 承上所述，因依據本發明之照明裝置，發光二極體所 發射的光線係射至位於反射元件表面的波長轉換層，並於 波長轉換層進行光線的波長轉換而發出另一種顏色的 光。經由反射元件之反射，再加上與發光二極體所發出的 光線混合後射出照明裝置。由於波長轉換層之入光面即為 使用者的觀察面，因此使用者可看到更高亮度的照明裝 置，進而提升了照明裝置的發光效率。 【實施方式】 以下將參照相關圖式，說明依據本發明較佳實施例之 照明裝置。 請參考圖2A所示，其係為本發明第一實施例照明裝 置2之示意圖。照明裝置2包含一反射元件21、一波長轉 換層22及一發光二極體23。其中，照明裝置2可作為日 常照明的燈具、交通號誌、手電筒或是車用燈具。 反射元件21係具有一反射面211，反射面211可利用 金屬鐘膜或鏡面來形成，以反射發光二極體23所發出之 光線。於本實施例中，反射元件21係以平板狀為例。 波長轉換層22係設置於反射面211上，且波長轉換 層22係具有任何可轉換光線波長之物質，例如為螢光體、 磷光體或濾光物質。其中，螢光體係為一黃色螢光體、— 綠色螢光體、一藍色螢光體、一紅色螢光體或一混合營光 體。而混合螢光體可混合有一監色螢光體、一綠色螢光體 7 200848657 及一紅色螢光體。於本實施例中，波長轉換層22係以具 有一黃色螢光體為例。 發光二極體23係設置於反射元件21之一侧，且發出 一光線，其中，發光二極體23可為一藍光發光二極體、 ^ 一紅光發光二極體、一綠光發光二極體、一白光發光二極 體或一紫外光發光二極體。於本實施例中，發光二極體23 係以一監光發光二極體為例。另外，發光二極體23之型 式可為一裸晶或為一封裝好的發光二極體元件。 於本實施例中，照明裝置2更可包含有一基座24、一 封膠體25及燈枉26。其中，發光二極體23係設置於基座 24上，且基座24係可為一導線架、一電路板或一散熱片。 封膠體25係包覆發光二極體23，但可不用摻雜螢光體。 反射το件21及基座24皆與燈柱26相連接，發光二極體 23所發出的光線，穿透封膠體乃後，經由反射元件21反 射出去。 此外，請參考圖2B所示，其係為本發明第二實施例 照明裝置2,之示意圖。照明裝置2,之結構與技術特徵係與 照明裝置2雷同，於此只針對發光二極體23的設置位置 不同處詳細說明。恥明裝置2’更包含有一支撐柱27，支， 柱27的一端N1係設置於燈柱26上，而另一端N2係與= 光二極體23相連接，以支撐發光二極體23。 ^ 請苓考圖2C所示，其係為本發明第三實施例照明聿 置2”之示意圖，照明裝置2”之結構與技術特徵係與照明 裝置2雷同，於此只針對發光二極體23的設置位置不同 8 200848657 處詳細說明。於本實施例中，發光二極體23係可直接設 置於反射元件21之一端。 請再參考圖2A、圖2B及圖2C所示，發光二極體23 係發出光線，穿過波長轉換層22後射至反射元件21之一 反射面211。光線係激發了波長轉換層22之螢光體，並將 其轉換成不同波長之光線。於本實施例中，黃色螢光體係 吸收电光一極體23之光線後係發出黃光，再與發光二極 體23所發出之藍光混合成為一白光，而由反射面21丨射 出。由於白光係於反射面211上形成並直接射出至外部， 因此照明裝置2、2,、2”可以得到較好的發光效率。 接下來，請參考圖3所示，圖3係為本發明第四〒於 例照明裝置3之一示意圖。照明裝置3包含有—反射 31、一波長轉換層32、一藍光發光二極體33、一 έ ^ 二光發 光二極體33’、一基座34、複數封膠體35、35，乃一士 a 久一支撐柱 36 〇 於本實施例中，係以複數個發光二極體為例，例如為 藍光發光二極體33加上紅光發光二極體33,，該等發光= 極體33、33’係位於不同的封膠體35、35’内，祐—„ 工一问設置 於基座34’而波長轉換層32同樣以具有黃色榮光粉為例 其中’增加紅光發光二極體33’可使照明裝置3有較彳土的 演色性。另外，反射元件31係呈一弧狀，以便更易^中 發光二極體33、33’所發射的光線，再將光線經由設=在 反射元件31内侧之波長轉換層32發射出去。此外，支_ 柱36可為透明材質，以免阻擋光線，而支撐检％之―: 9 200848657 N1係與反射元件31相連接，而另一端N2係與發光二極 體33、33’相連，支撐柱36係與反射元件31呈一角度， 以使發光二極體33、33’與反射元件31距離一適當間距， 發光二極體33、33’發出之光線能被反射元件31反射，以 提升照明裝置3之發光效率。須注意者，反射元件31尚 可與其他照明裝置3上之結構相互連接，例如反射元件31 可為為手電筒反射罩之一部分，以使光線向外射出。 請參考圖4A所示，圖4為本發明第五實施例照明裝 置4之一示意圖。照明裝置4包含有一反射元件41、一波 長轉換層42、一發光二極體43、一基座44及一封膠體45。 其中，基座44及封膠體45之結構與技術特徵係與第二實 施例中之基座24及封膠體25相同，故在此不再贅述。 本實施例中，反射元件41係呈一杯碗狀，且發光二 極體43係經由基座44設置於杯底，同理，發光二極體43 發出光線，穿過波長轉換層42後射至反射元件41之一反 射面411。光線同時激發了波長轉換層42之螢光體，螢光 體吸收了發光二極體43發出的光線，並將其轉換成不同 波長之光線。於本實施例中，螢光體係以具有藍光螢光 體、綠光螢光體及紅光螢光體之混合螢光體為例，發光二 極體43係以一紫外光發光二極體為例，俾使受紫外光激 發之螢光體射出藍光、綠光及紅光並混合成為一白光，而 由反射面411射出。由於白光係於反射面411上形成並直 接射出至外部，因此照明裝置4可以得到較好的發光效率。 此外，請參考圖4B所示，圖4B為本發明第六實施例 10 200848657 照明裝置4’之一示意圖。而照明裝置4,之結構與技術特徵 係與照明裝置4雷同，故在此只針對反射元件41’作說明。 反射元件41’係可呈一喇叭狀，且發光二極體43係設 置反射元件41，之一出口，且發光二極體43係設置於開孔 較小的出口，以使出光面積較大。因此，照明裝置4、4, 可依需要，而將反射元件41、4 Γ設計為一杯碗狀或一制 口八狀。 請參考圖4C所示，圖4為本發明第七實施例照明裝 置4”之一示意圖。照明裝置4”與第五實施例之照明裝置 4不同的地方在於，照明裝置4 ’’更包含有一辅助反射元件 46係設置於發光二極體43之一側，於本實施例中，辅助 反射元件46可為一反射錐，其截面約呈一倒三角形，且 位於發光二極體43之一出光面431。且輔助反射元件46 係具有一反射面461，反射面461可利用金屬鍍膜或鏡面 來形成，以反射發光二極體43所發出之垂直向上光線， 並將反射的光線射至反射元件41，以提高光線利用率。 承上所述，本發明之照明裝置中發光二極體所發射的 光線係射至位於反射元件表面的波長轉換層，並於波長轉 換層進行紐料長轉換而發出另—種顏色的光。經由反 射7L件之反射再加上與發光二極體所發出 射出照明裝置。由於浊具喆从a & '轉制之人光㈣為使用者的觀 祭面，因此使用者可看 了照明裝置的發光致率。月衣置進而提升 以上所述僅為皋4丨 、 性，而非為限制性者。任何未脫離 11 200848657 本發明之精神與範脅，而對其進行之等效修改或變更，均 應包含於後附之申請專利範圍中。 【圖式簡單說明】 . 圖1為顯示習知照明裝置之一示意圖； 圖2A為顯示依據本發明第一實施例照明裝置之一示意圖； 圖2B為顯示依據本發明第二實施例照明裝置之一示意圖； 圖2C為顯示依據本發明第三實施例照明裝置之一示意圖； 圖3為顯示依據本發明第四實施例照明裝置之一示意圖； 圖4A為顯示依據本發明第五實施例照明裝置之一示意圖； 圖4B為顯示依據本發明第六實施例照明裝置之一示意 圖；以及 圖4C為顯示依據本發明第七實施例照明裝置之一示意圖。 元件符號說明： 1、2、2,、2，，、3、4、4,、4，，：照明裝置 11 :燈罩 12 :發光二極體元件 121 :發光二極體晶片 122 :封裝體 123 :螢光體 124 :導線架 123a :受光側 123b :出光側 12 200848657 13 :電路板 21、 31、41、4Γ : 211、411 :反射面 22、 32、42、42’ ： 23 、 33 、 33’ 、 43 : 24、 34、44 :基座 25、 35、35’、45 : 26 :燈柱 27、36 :支撐柱 431 :出光面 46 :輔助反射元件 461 :反射面 Nl、N2 : —端 反射元件 波長轉換層 發光二極體 封膠體 13BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an illumination device, and more particularly to an illumination device using a light-emitting diode as a light-emitting source. [Prior Art] A Light Emitting Diode (LED) is a semi-conductor element that is used as an indicator light and a light source for an outdoor display panel at an early stage. It is known as the new light source of the 21st century and has the advantages of high efficiency, long life and unbreakable traditional light sources. The light-emitting diode converts electrical energy into light energy, that is, applies current to the light-emitting diode, and through the combination of electrons and holes, excess energy is released in the form of light to achieve a luminous effect, which is a cold light. The life expectancy is over 100,000 hours. Therefore, if the light-emitting diode can be applied to a lighting device, it is a great advancement of the lighting device. Please refer to FIG. 1, which is a schematic view of a conventional lighting device 1. The lighting device 1 includes a lamp cover 11, a plurality of light emitting diode elements 12, and a circuit board 13. The light-emitting diode element 12 is provided on the circuit board 13, and the lamp cover 11 is fixed to the circuit board 13. As shown in the circular enlarged portion of FIG. 1 , each of the LED components 12 includes a light emitting diode chip 121 , a package body 122 , a phosphor 123 doped in the encapsulant 122 , and a lead frame 124 . . The light-emitting diode chip 121 is disposed on the lead frame 124, and the lead frame 124 is electrically connected to the circuit board 13, and the package body 122 is coated with the light-emitting diode crystal 5 200848657 piece 121. When the light-emitting diode chip 121 is used as the color light-emitting diode chip, and the phosphor 123 is a yellow phosphor, the blue light emitted by the light-emitting diode chip 121 and the yellow light generated by the yellow phosphor 123 are excited. After the light is mixed, white light is emitted to emit the illumination device 1. The phosphor 123 has a light-receiving side 123a and a light-emitting side 123b, and the light emitted from the light-emitting diode element 12 enters the phosphor 123 via the light-receiving side 123a, and the light-emitting side 123b emits the illumination device 1. In the case of the illumination device 1, the light observed by the user is from the light exiting side 123b, but the place where the light emitting diode element 12 emits the strongest is the light emitted from the light emitting diode chip 121 exciting the phosphor 123. The place, that is, the light receiving side 123a of the package body 122. From this, it can be seen that the light seen by the user on the light exiting side 123b is not the brightest part of the light emitting diode element 12. Therefore, how to change the structural design of the illumination device i and improve the luminous efficiency of the illumination device using the light-emitting diode as a light source is an important issue. [Invention] In view of the above problems, an object of the present invention is to provide a comparison A lighting device with good luminous efficiency. The illuminating device according to the present invention comprises a reflecting element, a wavelength converting layer and a light emitting diode. Wherein the reflective element has a reflective surface. The wavelength conversion layer is disposed on the reflective surface of the reflective element. The light emitting diode system is disposed on one side of the reflective element and emits a light 6 200848657 Line 0. According to the illumination device according to the present invention, the light emitted by the light emitting diode is incident on the wavelength conversion on the surface of the reflective element. Layer, and wavelength conversion of light in the wavelength conversion layer to emit light of another color. The illumination device is emitted after being reflected by the reflective element and mixed with the light emitted by the light-emitting diode. Since the light incident surface of the wavelength conversion layer is the viewing surface of the user, the user can see the illumination device with higher brightness, thereby improving the luminous efficiency of the illumination device. [Embodiment] Hereinafter, a lighting device according to a preferred embodiment of the present invention will be described with reference to the related drawings. Please refer to FIG. 2A, which is a schematic diagram of a lighting device 2 according to a first embodiment of the present invention. The illumination device 2 comprises a reflective element 21, a wavelength conversion layer 22 and a light-emitting diode 23. Among them, the lighting device 2 can be used as a daily lighting fixture, a traffic sign, a flashlight or a vehicle lamp. The reflecting member 21 has a reflecting surface 211 which can be formed by a metal clock or a mirror surface to reflect the light emitted from the light-emitting diode 23. In the present embodiment, the reflective element 21 is exemplified by a flat plate shape. The wavelength conversion layer 22 is disposed on the reflective surface 211, and the wavelength conversion layer 22 is a substance having any wavelength that can convert light, such as a phosphor, a phosphor, or a filter. The fluorescent system is a yellow phosphor, a green phosphor, a blue phosphor, a red phosphor or a mixed camp. The mixed phosphor can be mixed with a color-adjusting phosphor, a green phosphor 7 200848657 and a red phosphor. In the present embodiment, the wavelength conversion layer 22 is exemplified by having a yellow phosphor. The light-emitting diode 23 is disposed on one side of the reflective element 21 and emits a light. The light-emitting diode 23 can be a blue light-emitting diode, a red light-emitting diode, and a green light-emitting diode. A polar body, a white light emitting diode or an ultraviolet light emitting diode. In the present embodiment, the light-emitting diode 23 is exemplified by a light-emitting diode. In addition, the type of the light-emitting diode 23 can be a bare crystal or a packaged light-emitting diode element. In the embodiment, the illuminating device 2 further includes a base 24, a sealing body 25 and a lamp cymbal 26. The light-emitting diode 23 is disposed on the base 24, and the base 24 can be a lead frame, a circuit board or a heat sink. The encapsulant 25 coats the light-emitting diode 23, but it is not necessary to dope the phosphor. Both the reflection τ member 21 and the susceptor 24 are connected to the lamp post 26, and the light emitted from the illuminating diode 23 passes through the sealing body and is then reflected by the reflecting member 21. Further, please refer to Fig. 2B, which is a schematic view of a lighting device 2 according to a second embodiment of the present invention. The structure and technical features of the illuminating device 2 are the same as those of the illuminating device 2, and only the differences in the installation positions of the illuminating diodes 23 will be described in detail. The mascara device 2' further includes a support column 27, and one end of the column 27 is disposed on the lamp post 26, and the other end N2 is connected to the photodiode 23 to support the light-emitting diode 23. Please refer to FIG. 2C, which is a schematic diagram of a lighting device 2" according to a third embodiment of the present invention. The structure and technical features of the lighting device 2" are the same as those of the lighting device 2, and only for the light emitting diode. The setting position of 23 is different from 8 200848657. In the present embodiment, the light-emitting diode 23 can be directly disposed at one end of the reflective member 21. Referring to FIG. 2A, FIG. 2B and FIG. 2C again, the light-emitting diode 23 emits light, passes through the wavelength conversion layer 22, and is incident on one of the reflective surfaces 211 of the reflective element 21. The light system excites the phosphor of the wavelength conversion layer 22 and converts it into light of different wavelengths. In the present embodiment, the yellow fluorescent system absorbs the light of the electro-optical body 23 and emits yellow light, and then mixes with the blue light emitted by the light-emitting diode 23 to become a white light, which is emitted by the reflecting surface 21 . Since the white light is formed on the reflecting surface 211 and directly emitted to the outside, the illumination device 2, 2, 2" can obtain better luminous efficiency. Next, please refer to FIG. 3, which is the first embodiment of the present invention. A schematic diagram of a lighting device 3 is provided. The lighting device 3 includes a reflection 31, a wavelength conversion layer 32, a blue light emitting diode 33, a light emitting diode 33', and a base 34. The plurality of sealing bodies 35 and 35 are a pair of support pillars 36. In this embodiment, a plurality of light emitting diodes are taken as an example, for example, a blue light emitting diode 33 and a red light emitting diode. Body 33, the illuminating bodies = 33, 33' are located in different sealants 35, 35', and the wavelength conversion layer 32 is also provided with a yellow glory powder. For example, 'increasing the red light emitting diode 33' can make the lighting device 3 have more color rendering properties. Further, the reflecting member 31 is formed in an arc shape so as to more easily illuminate the light emitted from the light-emitting diodes 33, 33', and then emit the light through the wavelength conversion layer 32 which is disposed inside the reflecting member 31. In addition, the support_column 36 can be made of a transparent material to prevent light from being blocked, and the support is checked by: - 9 200848657 N1 is connected to the reflective element 31, and the other end N2 is connected to the light-emitting diodes 33, 33', supporting The column 36 is at an angle to the reflective element 31 such that the light-emitting diodes 33, 33' are spaced apart from the reflective element 31 by a suitable distance, and the light emitted by the light-emitting diodes 33, 33' can be reflected by the reflective element 31 to enhance The luminous efficiency of the illumination device 3. It should be noted that the reflective element 31 can still be interconnected with other structures on the illumination device 3. For example, the reflective element 31 can be part of a flashlight reflector to allow light to exit. Referring to FIG. 4A, FIG. 4 is a schematic diagram of a lighting device 4 according to a fifth embodiment of the present invention. The illumination device 4 includes a reflective element 41, a wavelength conversion layer 42, a light-emitting diode 43, a base 44, and a gel 45. The structure and technical features of the pedestal 44 and the encapsulant 45 are the same as those of the pedestal 24 and the encapsulant 25 in the second embodiment, and therefore will not be described herein. In this embodiment, the reflective element 41 is in the shape of a cup, and the light-emitting diode 43 is disposed on the bottom of the cup via the base 44. Similarly, the light-emitting diode 43 emits light, passes through the wavelength conversion layer 42 and is incident on the surface. One of the reflective elements 41 has a reflective surface 411. The light simultaneously excites the phosphor of the wavelength conversion layer 42, and the phosphor absorbs the light emitted from the light-emitting diode 43 and converts it into light of different wavelengths. In this embodiment, the fluorescent system is exemplified by a mixed phosphor having a blue phosphor, a green phosphor, and a red phosphor, and the LED 43 is an ultraviolet light emitting diode. For example, the ultraviolet light-excited phosphor emits blue light, green light, and red light and is mixed into a white light, which is emitted by the reflecting surface 411. Since the white light is formed on the reflecting surface 411 and directly emitted to the outside, the lighting device 4 can obtain better luminous efficiency. In addition, please refer to FIG. 4B, which is a schematic diagram of a lighting device 4' according to a sixth embodiment of the present invention. The structure and technical features of the illumination device 4 are the same as those of the illumination device 4, and therefore only the reflective element 41' will be described herein. The reflective element 41' can be in the shape of a horn, and the light-emitting diode 43 is provided with a reflective element 41, an exit, and the light-emitting diode 43 is disposed at an outlet having a small opening to make the light-emitting area large. Therefore, the illuminating devices 4, 4 can design the reflecting members 41, 4 为 as a bowl or a octagonal shape as needed. Referring to FIG. 4C, FIG. 4 is a schematic diagram of a lighting device 4" according to a seventh embodiment of the present invention. The lighting device 4" is different from the lighting device 4 of the fifth embodiment in that the lighting device 4'' further includes a lighting device 4'' The auxiliary reflective element 46 is disposed on one side of the light-emitting diode 43. In this embodiment, the auxiliary reflective element 46 can be a reflective cone having a cross section of approximately an inverted triangle and located at one of the light-emitting diodes 43. Face 431. And the auxiliary reflective element 46 has a reflective surface 461, and the reflective surface 461 can be formed by using a metal plating film or a mirror surface to reflect the vertical upward light emitted by the light emitting diode 43 and direct the reflected light to the reflective element 41. Improve light utilization. As described above, in the illumination device of the present invention, the light emitted from the light-emitting diode is incident on the wavelength conversion layer on the surface of the reflective element, and the wavelength conversion layer performs the conversion of the material length to emit light of another color. The illumination device is emitted by reflecting the reflection of the 7L member and emitting the light emitting diode. Since the turbidity is changed from a & 'transformed person's light (4) to the user's viewing surface, the user can see the luminous illuminance of the lighting device. The monthly clothing is further enhanced. The above description is only for 皋4丨, sex, and not for limitation. The spirit and scope of the present invention are not to be construed as being limited to the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing a conventional lighting device; Fig. 2A is a schematic view showing a lighting device according to a first embodiment of the present invention; Fig. 2B is a view showing a lighting device according to a second embodiment of the present invention; 2 is a schematic view showing a lighting device according to a third embodiment of the present invention; FIG. 3 is a schematic view showing a lighting device according to a fourth embodiment of the present invention; and FIG. 4A is a view showing a lighting device according to a fifth embodiment of the present invention; FIG. 4B is a schematic view showing a lighting device according to a sixth embodiment of the present invention; and FIG. 4C is a schematic view showing a lighting device according to a seventh embodiment of the present invention. DESCRIPTION OF SYMBOLS: 1, 2, 2, 2, 3, 4, 4, 4,,: Illumination device 11: Lampshade 12: Light-emitting diode element 121: Light-emitting diode wafer 122: Package 123 : phosphor 124 : lead frame 123 a : light receiving side 123 b : light emitting side 12 200848657 13 : circuit board 21, 31, 41, 4 Γ : 211, 411 : reflecting surfaces 22, 32, 42, 42': 23, 33, 33 ' , 43 : 24 , 34 , 44 : base 25 , 35 , 35 ' , 45 : 26 : lamp post 27 , 36 : support column 431 : light-emitting surface 46 : auxiliary reflective element 461 : reflective surface Nl , N2 : - end Reflective element wavelength conversion layer light emitting diode encapsulant 13