201020472 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種用於照明之照明設備，尤其係關於用 作照明體之導光板。 【先前技術】 在國際專利申請WO/2008/087593中公開了 一種通常用於 照明一平面的照明設備’其包括發光元件、外殼及一透明 的傳導光的照明體，發光元件容納於外殼中，照明體設置 • 於外殼上。該照明裝置通常用作閱讀燈，可放置該照明設 備使得照明體覆蓋於書本或其他平面上以藉由透明的照明 體來照明、觀看。該照明裝置之照明體包括具有表面結構 之析出層，用於接收發光元件所發出之光線並將其偏轉至 所需照明之表面上。該照明裝置中之照明體的表面結構通 常為鋸齒狀。然而由於此等鋸齒之頂端及鋸齒之間的連接 部分比較尖銳，當照明體受到擠壓、碰撞、刮擦時，此等 連接部分受到之壓強遠大於其他部分。因此此等連接部分 容易受到損傷從而使得照明體產生劃痕，進而影響閱讀效 果並降低該照明裝置之使用壽命。 【發明内容】 本發明之一重要目的便在於消除上述先前技術中之不 足，提供一種具有一定耐刮擦特性的導光板，本發明之另 外一目的在於提供使用此種具有耐到擦特性之導光板的照 明裝置。 本發明公開一種導光板，其包括：一第一面，一第二 136309.doc 201020472 面；其中該第一面與第二面基本平行，而且該第一面及第 一面之中的至少一面包括一種表面結構該表面結構包括 多個偏轉裝置，每一偏轉裝置包括一陡坡及一緩坡；該偏 轉裝置之頂峰及不同偏轉裝置之間的谷底的準線均為平滑 的曲線。帶有表面結構之表面整體上呈一平面因為偏轉 裝置之尺寸較小，而且緩坡之角度較小，因此用肉眼看起 來導光板之具有表面結構的表面如光滑的表面。 本發明亦公開一種用於照明一表面的照明設備，包括： ® 件、照明體、外殼；其中該發光元件發射光線；該 外殼容納該發光元件並支撐該照明體；該照明鱧包括前述 導光板，其中偏轉裝置用於接收該發光元件發射之光線並 將其偏轉至該需照明之表面上。 根據本發明之照明設備，由於其表面結構之偏轉裝置的 頂端及連接部位的圓滑結構特點，使得照明設備之照明 體，亦即導光板，具有耐刮擦之特性。 φ 根據本發明之一較佳實施例，導光板對於其内部傳導到 之光線係透明的。另外，導光板對於周圍環境中之光線亦 係透明的。此特徵在導光板用於閱讀燈時非常重要。因為 導光板對内部光線及環境中之光線係透明的，自導光板之 一侧面射入之光線經過偏轉裝置之偏轉，自第一面及第二 面均有光線射出導光板，從而照亮附近之平面，例如一^ 本，使得一人可輕易地透過導光板看到導光板另一側所覆 蓋之書本上的内容。 根據本發明之-實施例，導光板之第一面及第 136309.doc 201020472 =面具有包括偏轉裝置之表面結構，而另—面係平坦而 尤π的。根據本發明之另一實施例，導光板之第一面及第 一面均具有包括偏轉裝置之表面結構。 根據本發明之一實施例，導光板之至少一 » 叫工I衣面結 毒：的各偏轉裝置的緩坡沿著同一方向下降，該方向通常 係設置於導光板—侧之發光器件所發出之光線在導光板中 的主要傳播方向。201020472 IX. Description of the Invention: [Technical Field] The present invention relates to a lighting device for lighting, and more particularly to a light guiding plate for use as an illuminating body. [Prior Art] In the international patent application WO/2008/087593, a lighting device generally used for illuminating a plane is disclosed, which comprises a illuminating element, a casing and a transparent illuminating body for conducting light, the illuminating element being housed in the casing, Illumination body settings • on the housing. The illuminating device is typically used as a reading light that can be placed such that the illuminating body covers the book or other surface to be illuminated and viewed by the transparent illuminating body. The illuminating body of the illuminating device includes a deposition layer having a surface structure for receiving light from the illuminating element and deflecting it onto the surface of the desired illumination. The surface structure of the illuminating body in the illuminating device is usually serrated. However, since the connection between the top end of the serrations and the serrations is sharp, when the illumination body is squeezed, collided, or scratched, the connection portions are subjected to a pressure much larger than the other portions. Therefore, the connecting portions are easily damaged to cause scratches in the illuminating body, thereby affecting the reading effect and reducing the service life of the lighting device. SUMMARY OF THE INVENTION An important object of the present invention is to eliminate the above-mentioned deficiencies in the prior art and to provide a light guide plate having certain scratch resistance characteristics. Another object of the present invention is to provide a guide for using such scratch resistance. Lighting device for light panels. The invention discloses a light guide plate comprising: a first surface, a second surface 136309.doc 201020472; wherein the first surface is substantially parallel to the second surface, and at least one of the first surface and the first surface The invention comprises a surface structure comprising a plurality of deflection devices, each deflection device comprising a steep slope and a gentle slope; the top line of the deflection device and the alignment of the valley bottom between the different deflection devices are smooth curves. The surface having the surface structure as a whole has a flat surface because the deflection means is small in size and the angle of the gentle slope is small, so that the surface of the light guide plate having a surface structure such as a smooth surface is visually recognized. The invention also discloses a lighting device for illuminating a surface, comprising: a component, an illuminating body, a casing; wherein the illuminating component emits light; the casing accommodating the illuminating component and supporting the illuminating body; the illuminating raft comprises the foregoing light guiding plate The deflecting device is configured to receive the light emitted by the light emitting element and deflect it onto the surface to be illuminated. According to the illuminating device of the present invention, the illuminating body of the illuminating device, that is, the light guiding plate, has scratch resistance characteristics due to the rounded structure of the tip end portion and the connecting portion of the deflecting device of the surface structure. φ According to a preferred embodiment of the invention, the light guide plate is transparent to the light to which it is internally conducted. In addition, the light guide plate is also transparent to the light in the surrounding environment. This feature is very important when the light guide is used for reading lamps. Because the light guide plate is transparent to the internal light and the light in the environment, the light incident from one side of the light guide plate is deflected by the deflection device, and light is emitted from the first surface and the second surface to emit the light guide plate, thereby illuminating nearby The plane, for example, enables one person to easily see the contents of the book covered by the other side of the light guide plate through the light guide plate. According to an embodiment of the invention, the first side of the light guide plate and the 136309.doc 201020472 = face have a surface structure including the deflecting means, and the other face is flat and especially π. According to another embodiment of the present invention, the first side and the first side of the light guide plate each have a surface structure including a deflecting means. According to an embodiment of the present invention, the gentle slope of each of the deflection devices of the light guide plate is reduced in the same direction, and the direction is usually set by the light-emitting device disposed on the light guide plate. The main direction of propagation of light in the light guide.
根據本發明之一實施例，導光板之至少一面上之表面結 構由連續排β之偏轉裝置組成。如先前技術中人們所: 知’具有平行的上、下表面之光導中會產生内部全反射。 本實施例中之由連續的偏轉裝置形成之表面結構可改變該 内部全反射狀態，使得光線自具有該表面結構之第一面及/ 或第二面均勻地射出，從而給處於第一面及/或第二面附 近之一平面提供舒適的照明度β 根據本發明之一實施例，導光板之表面結構中之偏轉裝 置的緩坡的傾斜角度，亦即緩坡與導光板之第一面或第二 面之間的夾角，在0.1。至10。之間；更佳地，緩坡之角度在 0.2°至8。之間；更佳地，緩坡之角度在〇 5。至2。之間。 根據本發明之一實施例，導光板之表面結構中之偏轉裝 置的陡坡的傾斜角度，亦即陡坡與導光板之第一面或第二 面之間的夾角在80〇至90。之間；更佳地，陡坡之角度在 82°至88°之間。 根據本發明之一實施例，導光板之表面結構中之偏轉裝 置的寬度’亦即偏轉裝置之陡坡及緩坡的底部之間的距 136309.doc 201020472 離，在10 μηι至3 mm之間；更佳地，偏轉裝置之寬度在5〇 μιη至1 mm之間。因為偏轉裝置之寬度較小，而且緩坡之 角度較小，因此用肉眼看起來導光板之具有表面結構的表 面如光滑的表面，從而使一人透過導光板所看到之導光板 另一側附近的圖案不會產生明顯的畸變。 根據本發明之一實施例，導光板之厚度在〇5 mm至5瓜瓜 之間；更佳地，導光板之厚度在0.6 mmi2 min之間；更 佳地’導光板之厚度在0_8 mm至1.2 mm之間》較薄的厚度 ^ 不僅使導光板重量較輕，而且使得導光板具有一定的可彎 折性’可隨著所需照明之表面而彎曲。 根據本發明之一實施例，導光板之材料可包括以下材料 之一：聚乙烯、聚丙烯、聚醯胺、聚甲基丙烯酸甲酯 (PMMA)、聚碳酸酯（PC)、聚苯乙烯（ps)。如人們所已 知’上述材料均具有良好的光透過性。 根據本發明之一較佳實施例，導光板之表面結構至少亦 φ 覆蓋一層硬遮罩層。遮罩層之硬度通常高於導光板之主體 材料，從而使得導光板之耐磨效能進一步得以改良。視情 況，硬遮罩層之上亦可覆蓋有若干其他薄層，例如防汙 層、增透層以及其他類似的具有特殊效果之光學薄膜中之 一種或幾種。 根據本發明之一實施例，導光板之表面結構中之偏轉裝 置係由一鋸齒形或三角形裝置之上覆蓋至少一層覆蓋層而 形成，覆蓋層中包括一硬遮罩層。視情況，覆蓋層中亦包 括若干其他薄層，例如防汙層、增透層以及其他類似的具 136309.doc 201020472 有特殊效果之光學薄膜中之一種或幾種。 根據本發明之一實施例’一照明裝置包括發光元件、照 明體及外殼，外殼容納發光元件並支撐照明體照明體 採用前述之任-種導光板製成。其中發光元件可採用以下 器件：發光二極體（LED)、有機發光二極體（OLED)、白熾 燈、勞光燈。為了實現高效節能之目的，較佳地，照明裝 置中之發光元件可採用發光二極體。 根據本發明之一實施例，照明設備之照明體的尺寸小於 • 600 cm2。當該照明設備作為一閱讀燈來使用時出於使 用之舒適性及方便性以及生產加工工藝之難易程度的考 慮，更佳地，照明設備之照明體的尺寸應小於4〇〇em2。 根據本發明之一實施例，照明設備亦包括電池，用於為 發光元件提供所需之電能。更佳地，照明裝置亦包括太陽 能電池，可在光照環境下將光能轉化為電能並儲存起來， 以供在黑暗環境下使用，從而使得照明設備更加節能。 【實施方式】 ❹ _ 圖1展示根據本發明之一實施例的導光板10之橫截面的 示意圖。導光板1〇基本上呈平板狀，包括上表面u及下表 面12，其中上表面11、下表面12基本平行。在所示實施例 中’下表面12係平坦而光滑的’而上表面丨丨具有一表面結 構，該表面結構由多個偏轉裝置21連續設置而成，每個偏 轉裝置具有一陡坡17(在圖1中表示為i7a及17b)以及一緩坡 18(在圖1中表示為18a及18b) ’而且所有緩坡18均沿同一方 向下降。雖然上表面11具有表面結構’但因為偏轉裝置之 136309.doc -10· 201020472 尺寸較小，而且緩坡之角度較小，因此用肉眼看起來上表 面11整體上仍呈一平面。所示導光板10可用於一閱讀燈， 以用於照明靠近導光板10之一表面，例如報紙或書本。通 常由導光板一側之發光元件31發出光線，而由連續的偏轉 裝置21形成之表面結構可改變導光板1〇之内部全反射狀 況。例如，光線自導光板1 〇内部射至緩坡1 8&上，其中， 部分光線被緩坡18a反射向下表面12，亦有部分光線，主 要藉由折射，穿透緩坡18a射出導光板1〇。由緩坡18a射出 鲁 導光板之光線中的一部分射至陡坡17b上，其中之至少 一部分又穿透陡坡17b射回導光板1〇内部。而自導光板1〇 内部射至下表面12的光線，其中部分被反射向上表面，亦 有部分穿透下表面12射出導光板1〇。如此，經過連續的偏 轉裝置之偏轉，導光板10之上表面11及下表面12均有光線 射出。而外部之光線亦可穿透導光板1〇，因而一人可透過 導光板10看到其所覆蓋之頁面的内容。其中，各緩坡之傾 Φ 斜角度，亦即各緩坡與上表面11或下表面12之間的夾角， 可發生變化，例如緩坡18a及18b各自的傾斜角度可相同、 亦可不同；同樣地，各陡坡之傾斜角度，亦即各陡坡與上 表面11或下表面12之間的夾角，亦可發生變化，例如陡坡 17a及m各自的傾斜角度可相同、亦可不同；從而使得由 導光板10射出之光線達到更好的光學分布。 圖2展示根據本發明之另一實施例的導光板1〇，之橫截面 的示意圖。導光板1〇.基本上呈平板狀，包括上表面u及下 表面U，其令上表面U、下表面12基本平行。在所示實施 136309.doc 201020472 例中，上表面11具有一表面結構’該表面結構由多個偏轉 裝置21連續設置而成，每個偏轉裝置21具有一緩坡17及一 陡坡18;而下表面12亦具有一表面結構，該表面結構由多 個偏轉裝置22連續設置而成，每個偏轉裝置22具有一緩坡 17及一陡坡18 ;而且所有緩坡18均沿同一方向下降。通常 由導光板一側之發光元件31發出光線，而由連續的偏轉裝 置21、22形成之表面結構可改變導光板1〇,之内部全反射狀 況，經過連續的偏轉裝置之偏轉，導光板1〇，之上表面11及 ® 下表面12均有光線射出。其中，各緩坡之傾斜角度可發生 變化；同樣地，各陡坡之傾斜角度亦可發生變化；從而使 得由導光板10’射出之光線達到更好的光學分布。 圖3展示圖1或圖2中虛線橢圓部分之表面結構的局部放 大示意圖。如圖所示，表面結構由連續的偏轉裝置21組 成，每一偏轉裝置包括一陡坡17及一緩坡18。一偏轉裝置 之準線大致可分為四個部分，如圖3所示，即：偏轉裝置 ❹ 21a之緩坡18a與偏轉裝置21b之陡坡17b之間的連接部位 A，偏轉裝置21b之頂峰部位C,偏轉裝置21b之陡坡17b、 緩坡18b分別對應的部位B、De其中，部位B、D基本上為 直線，而部位A、C基本上為平滑曲線。各偏轉裝置之頂 峰部位比較容易受到到擦、碰撞等外力作用。在本實施例 中，各偏轉裝置之頂峰部位及不同偏轉裝置之間的連接部 位均為流線型，因此在受到外力作用時，可部分地分散壓 力，使得局部壓強得以降低，從而使得偏轉裝置不易破 壞，導光板10具有耐到擦之特性，即使經反覆使用仍具有 136309.doc •12· 201020472 良好的觀看、閱讀效果β 較佳地’表面結構之上亦可覆蓋至少一層硬遮罩層，則 導光板ίο之耐到擦、耐磨損效能進一步得以改良。更佳 地’硬遮軍層之上亦可以覆蓋有若干其他薄層，例如防汙 層、增透層以及其他類似的具有特殊效果之光學薄膜中之 -種或幾種’從而使得導光板具有防汙、增透等改良效 月b*通常，汗層設置於最上而増透層既可設置於硬 遮罩層之上，亦可設置於硬遮罩層之下。 如圖3所示，偏轉裝置之陡坡17的傾斜角度為(X，偏轉裝 置之緩坡18的傾斜角度為ββ通常，緩坡18之角度0在〇 1〇 至1〇。之間，更佳地，β在〇.5。至8。之間。通常，陡坡17之 角度α在80。至90。之間，更佳地，〇^在82。至88。之間。通 *，偏轉裝置之寬度，亦即偏轉裝置之陡坡17及緩坡18的 底部之間的距離，在10 0„!至3 mm之間，更佳地偏轉裝 置之寬度在50 μπι至1 mm之間。因為偏轉裝置21之寬度較 小，導光板10之上、下表面用肉眼看起來如兩個光滑的表 面；而且因為緩坡18之角度較小，一人透過導光板10所看 到之導光板附近的圖案不會產生明顯的畸變。 導光板10所用之材料可為常用之化工原料，例如以下材 料中之一種：聚乙烯、聚酿胺、聚丙烯、聚甲基丙烯酸甲 酯（PMMA)、聚碳酸酯（PC)、聚苯乙烯（ps)。如人們所已 知’上述材料均具有良好的光透過性。 通常可採用兩種方法來產生本發明中之導光板。 一種方法係將PMMA、Pc等材料直接射出成形，產生本 136309.doc •13- 201020472 發明中之導光板。較佳地，根據不同的用途及要求，導光 板之表面亦覆蓋有若干薄層。 另-種方法包含以下兩步：第一步，產生一在至少一面 上具有表面結構的導光板，該表面結構包括多個橫截面為 鋸齒形、二角形、梯形或其他類似形狀的偏轉裝置。圖 4(1)中即展示了該種偏轉裝置之橫截面為鑛齒形或三角形 的表面結構。第二步，在第一步所產生之表面結構上塗佈 _層遮罩，如圖4(2)中所示，該遮罩可形成近似柱體之表 攀 δ並在轉角處具有曲線型的準線，從而產生本發明中公開 之導光板。塗佈遮罩之方法可為浸潰塗佈、旋轉塗佈喷 塗、流型塗佈或任何其他方法。較佳地，該遮罩層之材料 硬度應南於第-步中表面結構所用材料，從而使得導光板 ,、有耐刮擦、耐磨損之特性。更佳地，該硬遮罩層之上亦 可覆蓋有右干其他薄層，例如防汙層、增透層以及其他類 似的具有特殊效果之光學薄膜中之一種或幾種，從而使得 參 板具有防,于、增透等改良效能。通常防汗層設置於 最上層，而增透層既可設置於硬遮罩層之上，亦可設置於 硬遮罩層之下。 圖5所不為根據本發明之一實施例之照明設備9的側面剖 視圖及俯視圖。照明設備9包括發光元件31、照明體2〇及 外殼40。發光元件31設置於外殼4〇之内，外殼牝亦用於支 撐照明體20 ^在所示實施例中，照明裝置9為一閱讀燈， 用於照明位於照明體2〇之下的一表面，例如報紙或書本。 此處之照明體20可採用前面描述之導光板10或導光板10，。 136309.doc 201020472 照明體20之上表面上的多個偏轉裝置21用於接收發光元件 31所發出之光並將其偏轉至所需照明之表面上。 發光元件31包括若干發光二極體，通常設置於照明趙 之側邊，若一發光二極體發出之光線照度不夠，可沿照明 體20之側邊設置多個發光二極體。發光元件31連接至外殼 40上，外殼40中可包括印刷電路板（pcb)。發光二極體可 直接連接至印刷電路板上之電子器件。在外殼4〇中亦設置 有電、池61及驅動裝置62 »電池61用於提供發光元件31所需 電流，較佳地，電池61為可充電的。驅動裝置62可包括一 電流放大電路及一波形發生、控制電路，該波形發生、控 制電路用於產生期望之波形以驅動發光元件31，亦用於調 節波形之幅度、頻率及占空比。外殼4〇上亦可設置開關， 用於控制發光元件31之工作。 視情況’為了使照明設備9更加節能，在外殼4〇上亦設 置了太陽能電池60，在光照環境下，太陽能電池6〇將光能 轉化為電能並儲存於可充電電池61中，在黑暗環境十照明 設備9即可用於照明。 發光元件31可為發光二極體、有機發光二極體、白熾燈 或螢光燈。因為發光二極體在較低的功耗下即可提供足夠 的光線照度，因此比較適宜採用，所示之實施例中發光元 件31即為發光二極體。 所示實施例中，照明設備9中之照明體2〇的尺寸為1〇 em X15 cm。若作為手持式閱讀燈，照明設備9中之照明鱧2〇 的尺寸應大小適中，其他比較典型的可能尺寸包括5 emx 136309.doc 15 201020472According to an embodiment of the invention, the surface structure on at least one side of the light guide plate is composed of a continuous row of beta deflection means. As is known in the prior art, internal total reflection is produced in a light guide having parallel upper and lower surfaces. The surface structure formed by the continuous deflection device in this embodiment can change the internal total reflection state, so that the light is uniformly emitted from the first surface and/or the second surface having the surface structure, thereby giving the first surface and / or one of the planes near the second side provides a comfortable illumination degree β according to an embodiment of the present invention, the inclination angle of the gentle slope of the deflection device in the surface structure of the light guide plate, that is, the gentle slope and the first side of the light guide plate or the first The angle between the two sides is at 0.1. To 10. More preferably, the angle of the gentle slope is between 0.2 and 8. Between; better, the angle of the gentle slope is at 〇 5. To 2. between. According to an embodiment of the present invention, the inclination angle of the steep slope of the deflecting means in the surface structure of the light guide plate, that is, the steep slope and the angle between the first face or the second face of the light guide plate is 80 〇 to 90. More preferably, the angle of the steep slope is between 82° and 88°. According to an embodiment of the present invention, the width of the deflecting device in the surface structure of the light guide plate, that is, the distance between the steep slope of the deflecting device and the bottom of the gentle slope is 136309.doc 201020472, between 10 μηι and 3 mm; Preferably, the deflection means has a width of between 5 〇 μηη and 1 mm. Since the width of the deflecting device is small and the angle of the gentle slope is small, the surface of the light guide plate having a surface structure such as a smooth surface is visually recognized, so that one person passes through the light guide plate and is seen near the other side of the light guide plate. The pattern does not produce significant distortion. According to an embodiment of the present invention, the thickness of the light guide plate is between 〇5 mm and 5 melons; more preferably, the thickness of the light guide plate is between 0.6 mmi2 min; more preferably, the thickness of the light guide plate is between 0 mm and 8 mm. The thinner thickness between 1.2 mm^ not only makes the light guide plate lighter, but also makes the light guide plate have a certain bendability 'can bend with the surface to be illuminated. According to an embodiment of the present invention, the material of the light guide plate may include one of the following materials: polyethylene, polypropylene, polyamide, polymethyl methacrylate (PMMA), polycarbonate (PC), polystyrene ( Ps). As is known, the above materials all have good light transmittance. According to a preferred embodiment of the present invention, the surface structure of the light guide plate is at least φ covered with a hard mask layer. The hardness of the mask layer is generally higher than that of the body of the light guide plate, so that the wear resistance of the light guide plate is further improved. Optionally, the hard mask layer may be covered with a plurality of other thin layers, such as one or more of an antifouling layer, an antireflective layer, and other similar optical films having special effects. According to an embodiment of the invention, the deflection means in the surface structure of the light guide plate is formed by covering at least one cover layer over a zigzag or triangular device, the cover layer comprising a hard mask layer. Optionally, the cover layer also includes a number of other thin layers, such as an antifouling layer, an antireflection layer, and the like, one or more of the optical films having a special effect of 136309.doc 201020472. According to an embodiment of the present invention, a lighting device includes a light-emitting element, a illuminating body, and a casing, and the casing houses the illuminating element and supports the illuminating body illuminating body. Among the light-emitting elements, the following devices can be used: a light-emitting diode (LED), an organic light-emitting diode (OLED), an incandescent lamp, and a burnt lamp. For the purpose of achieving high efficiency and energy saving, preferably, the light-emitting elements in the illumination device may employ light-emitting diodes. According to an embodiment of the invention, the illuminating body of the illuminating device has a size of less than • 600 cm2. When the illuminating device is used as a reading light, the illuminating body of the illuminating device should have a size of less than 4 〇〇 em2 for the comfort and convenience of use and the ease of production and processing. According to an embodiment of the invention, the illumination device also includes a battery for providing the desired electrical energy to the illumination element. More preferably, the lighting device also includes a solar cell that converts the light energy into electrical energy and stores it in a light environment for use in a dark environment, thereby making the lighting device more energy efficient. [Embodiment] FIG. 1 shows a schematic view of a cross section of a light guide plate 10 according to an embodiment of the present invention. The light guide plate 1 is substantially flat and includes an upper surface u and a lower surface 12, wherein the upper surface 11 and the lower surface 12 are substantially parallel. In the illustrated embodiment, the 'lower surface 12 is flat and smooth' and the upper surface has a surface structure that is continuously formed by a plurality of deflection devices 21, each having a steep slope 17 (in Figure 1 shows i7a and 17b) and a gentle slope 18 (shown as 18a and 18b in Figure 1) and all of the gentle slopes 18 descend in the same direction. Although the upper surface 11 has a surface structure 'because the 136309.doc -10· 201020472 of the deflecting means is small in size and the angle of the gentle slope is small, it appears to the naked eye that the upper surface 11 is still a flat surface as a whole. The illustrated light guide plate 10 can be used in a reading light for illuminating a surface adjacent to the light guide plate 10, such as a newspaper or a book. Light is usually emitted from the light-emitting element 31 on the side of the light guide plate, and the surface structure formed by the continuous deflection means 21 can change the internal total reflection state of the light guide plate 1''. For example, the light is directed from the inside of the light guide plate 1 to the gentle slope 18&; part of the light is reflected by the gentle slope 18a to the lower surface 12, and some light is also emitted, mainly by refraction, penetrating the gentle slope 18a and exiting the light guide plate 1〇. A part of the light emitted from the gentle slope 18a to the light guide plate is incident on the steep slope 17b, and at least a part of it penetrates the steep slope 17b and is returned to the inside of the light guide plate 1b. The light that is incident on the lower surface 12 from the inside of the light guide plate 1 is partially reflected to the upper surface, and partially penetrates the lower surface 12 to exit the light guide plate 1〇. Thus, the light is emitted from the upper surface 11 and the lower surface 12 of the light guide plate 10 by the deflection of the continuous deflecting means. The external light can also pass through the light guide plate 1 so that one person can see the contents of the page covered by the light guide plate 10. The inclination angle of each gentle slope, that is, the angle between each gentle slope and the upper surface 11 or the lower surface 12 may be changed. For example, the inclination angles of the gentle slopes 18a and 18b may be the same or different; similarly, The angle of inclination of each steep slope, that is, the angle between each steep slope and the upper surface 11 or the lower surface 12 may also vary. For example, the inclination angles of the steep slopes 17a and m may be the same or different; thus, the light guide plate 10 is The emitted light reaches a better optical distribution. Fig. 2 is a schematic view showing a cross section of a light guide plate 1 according to another embodiment of the present invention. The light guide plate is substantially flat and includes an upper surface u and a lower surface U, such that the upper surface U and the lower surface 12 are substantially parallel. In the illustrated embodiment 136309.doc 201020472, the upper surface 11 has a surface structure 'the surface structure is continuously formed by a plurality of deflection devices 21, each deflection device 21 having a gentle slope 17 and a steep slope 18; and the lower surface 12 also has a surface structure that is continuously disposed by a plurality of deflection devices 22, each deflection device 22 having a gentle slope 17 and a steep slope 18; and all of the gentle slopes 18 are lowered in the same direction. Generally, the light-emitting element 31 on one side of the light guide plate emits light, and the surface structure formed by the continuous deflection devices 21, 22 can change the internal reflection state of the light guide plate 1 , and the deflection of the continuous deflection device, the light guide plate 1 〇, the upper surface 11 and the lower surface 12 have light rays emitted. Wherein, the inclination angle of each gentle slope can be changed; similarly, the inclination angle of each steep slope can also be changed; thus, the light emitted from the light guide plate 10' can achieve a better optical distribution. Fig. 3 is a partial enlarged view showing the surface structure of the elliptical elliptical portion in Fig. 1 or Fig. 2. As shown, the surface structure is comprised of continuous deflection devices 21, each of which includes a steep slope 17 and a gentle slope 18. The alignment line of a deflecting device can be roughly divided into four parts, as shown in Fig. 3, that is, the connecting portion A between the gentle slope 18a of the deflecting device 21a and the steep slope 17b of the deflecting device 21b, and the peak portion C of the deflecting device 21b. The portions B and De corresponding to the steep slope 17b and the gentle slope 18b of the deflection device 21b are substantially straight, and the portions A and C are substantially smooth curves. The peak portion of each deflection device is more susceptible to external forces such as rubbing or collision. In this embodiment, the peak portion of each deflection device and the connection portion between the different deflection devices are streamlined, so that when subjected to an external force, the pressure can be partially dispersed, so that the local pressure is reduced, so that the deflection device is not easily broken. The light guide plate 10 has the characteristics of resistance to rubbing, and has 136309.doc •12· 201020472 even if it is used repeatedly. Good viewing and reading effect β preferably 'the surface structure can also cover at least one hard mask layer, then The light-resistant ίο's resistance to rubbing and abrasion resistance is further improved. More preferably, the 'hard cover layer can also be covered with a number of other thin layers, such as anti-fouling layers, anti-reflection layers and other similar optical films of special effects, such that the light guide plate has Anti-fouling, anti-reflection and other improved effectiveness b* Generally, the sweat layer is placed on the top and the permeation layer can be disposed on the hard mask layer or under the hard mask layer. As shown in Fig. 3, the inclination angle of the steep slope 17 of the deflection device is (X, the inclination angle of the gentle slope 18 of the deflection device is ββ, and the angle 0 of the gentle slope 18 is between 〇1〇 and 1〇. More preferably, β is between 〇5 and 8. Usually, the angle α of the steep slope 17 is between 80 and 90. More preferably, 〇^ is between 82 and 88. The width of the deflection device is , that is, the distance between the steep slope 17 of the deflection device and the bottom of the gentle slope 18, between 10 0 „! and 3 mm, more preferably the width of the deflection device is between 50 μπι and 1 mm. Because of the deflection device 21 The width is small, and the upper and lower surfaces of the light guide plate 10 are like two smooth surfaces by the naked eye; and because the angle of the gentle slope 18 is small, the pattern near the light guide plate seen by one person through the light guide plate 10 does not become obvious. The material used for the light guide plate 10 can be a commonly used chemical raw material, such as one of the following materials: polyethylene, polyamine, polypropylene, polymethyl methacrylate (PMMA), polycarbonate (PC), Polystyrene (ps). As is known, all of the above materials have good light transmission. Two methods are generally used to produce the light guide plate of the present invention. One method is to directly project and shape PMMA, Pc, etc., to produce a light guide plate according to the invention of 136309.doc • 13-201020472. Preferably, according to different For the purpose and requirement, the surface of the light guide plate is also covered with a plurality of thin layers. The other method comprises the following two steps: the first step, producing a light guide plate having a surface structure on at least one side, the surface structure comprising a plurality of cross sections a sawtooth, a quadrangular, a trapezoidal or other similarly shaped deflecting device. Figure 4 (1) shows the surface structure of the deflecting device having a cross section of a mineral tooth or a triangle. The second step is in the first step. The resulting surface structure is coated with a layer mask, as shown in FIG. 4(2), which forms an approximate cylinder δ and has a curved alignment at the corner, thereby producing the present invention. The disclosed light guide plate may be a dip coating, a spin coating spray, a flow coating or any other method. Preferably, the material hardness of the mask layer should be south. The material used in the middle surface structure, Therefore, the light guide plate has the characteristics of scratch resistance and wear resistance. More preferably, the hard mask layer can also be covered with other thin layers of the right stem, such as an antifouling layer, an antireflection layer and the like. One or more of the optical films with special effects, so that the slab has improved performance such as anti-reflection, anti-reflection, etc. Usually the anti-sweat layer is disposed on the uppermost layer, and the anti-reflection layer can be disposed on the hard mask layer. 5 can also be disposed under the hard mask layer. Figure 5 is a side cross-sectional view and a plan view of the illumination device 9 according to an embodiment of the present invention. The illumination device 9 includes a light-emitting element 31, an illumination body 2, and a housing 40. The light-emitting element 31 is disposed within the outer casing 4, and the outer casing is also used to support the illumination body 20. In the illustrated embodiment, the illumination device 9 is a reading light for illuminating a surface below the illumination body 2 , such as a newspaper or a book. Here, the illuminating body 20 can adopt the light guide plate 10 or the light guide plate 10 described above. 136309.doc 201020472 A plurality of deflection devices 21 on the upper surface of the illuminating body 20 are for receiving light from the illuminating element 31 and deflecting it onto the surface of the desired illumination. The light-emitting element 31 includes a plurality of light-emitting diodes, which are usually disposed on the side of the illumination Zhao. If the illumination of the light-emitting diode is insufficient, a plurality of light-emitting diodes may be disposed along the side of the illumination body 20. The light emitting element 31 is coupled to a housing 40 which may include a printed circuit board (PCB). The LEDs can be connected directly to the electronics on the printed circuit board. Also provided in the housing 4 is an electric, cell 61 and drive unit 62. The battery 61 is used to provide the current required by the illumination element 31. Preferably, the battery 61 is rechargeable. The driving device 62 can include a current amplifying circuit and a waveform generating and controlling circuit for generating a desired waveform to drive the light emitting element 31, and also for adjusting the amplitude, frequency and duty ratio of the waveform. A switch may also be provided on the outer casing 4 to control the operation of the light-emitting element 31. Depending on the situation, in order to make the lighting device 9 more energy-efficient, a solar cell 60 is also disposed on the outer casing 4, and in a light environment, the solar cell 6 converts light energy into electrical energy and stores it in the rechargeable battery 61 in a dark environment. Ten lighting devices 9 can be used for lighting. The light-emitting element 31 may be a light-emitting diode, an organic light-emitting diode, an incandescent lamp or a fluorescent lamp. Since the light-emitting diode can provide sufficient light illumination at a lower power consumption, it is suitable to be used. In the illustrated embodiment, the light-emitting element 31 is a light-emitting diode. In the illustrated embodiment, the size of the illuminating body 2 in the illuminating device 9 is 1 〇 em X15 cm. If used as a hand-held reading light, the size of the illumination 鳢2〇 in the lighting device 9 should be moderately sized, and other typical possible sizes include 5 emx 136309.doc 15 201020472
Cm 12 Cmx2〇 <；111等。所示實施例中，照明設備9中之 ’’、、明體2〇的厚度約為1 mm ’為保證閱讀燈之觀看、閱讀的 舒適程：’照明體20之厚度一般以小於5_為宜。若用於 展不橋窗中之照明設備或其他用途，照明設備9中之照明 體20的尺寸甚至可達到1 m2以上。 圖6所不為根據本發明之另一實施例之照明設備9，的側 視圖及俯視内視圖。該實施例中，發光元件31為咖燈， 如圖6所示，沿照明趙2〇之側邊共設置了多個LED，以提 供足夠且較為均勻的光源。在照明設備9·中，太陽能電池 6〇被設置於照明趙2()上。—般地，太陽能電池6g之尺寸可 等於或小於照明體20之尺寸。為了作為閱讀燈來使用，太 陽能電池60亦應、對發光元件31發出之光線或周 圍環境之光 線係透明的。該實施例中之照明設備9,相較於圖5所示照明 備9之一優點在於，因為太陽能電池設置於照明體π上 而非設置於外殼4G上，外殼4G之體積可大大減小。 參 以上對本發明之實施例進行了描述，但本發明並非侷限 於特疋的系統、設備及材料’熟習此項技術者可在附加之 申請專利範圍之範圍内作各種改變或修改。 【圖式簡單說明】 藉由參照附圖閱讀以下所作之對非限制性實施例的詳細 描述，本發明之其他特徵、目的及優點將會變得更明顯。 圖1所不為根據本發明之一實施例的導光板的側視圖； 圖2所不為根據本發明之一實施例的導光板的側視圊； 圖3所示為圖！或圖2中橢圓虛線部分中之表面結構的局 136309.doc -16- 201020472 部放大示意圖； 圖4，包含圖4(1)及圖4(2),為根據本發明之一實施例的 導光板的局部立體示意圖； 圖5為根據本發明之一實施例的照明設備的側面剖視圖 及俯視圖； 圖6為根據本發明之又一實施例的照明設備的側視圖及 俯視内視圖；Cm 12 Cmx2〇 <;111 and so on. In the illustrated embodiment, the thickness of the '', the body 2 照明 in the illuminating device 9 is about 1 mm'. To ensure the viewing and reading of the reading lamp: the thickness of the illuminating body 20 is generally less than 5 mm. should. If used for lighting or other purposes in a bridge window, the size of the illuminator 20 in the luminaire 9 can even be more than 1 m2. Figure 6 is a side elevational view and a plan view of the illumination device 9, in accordance with another embodiment of the present invention. In this embodiment, the light-emitting element 31 is a coffee light. As shown in Fig. 6, a plurality of LEDs are disposed along the side of the illumination to provide a sufficiently uniform light source. In the lighting device 9·, the solar cell 6 is placed on the illumination 2 (). Generally, the size of the solar cell 6g may be equal to or smaller than the size of the illuminating body 20. For use as a reading light, the solar cell 60 should also be transparent to the light emitted by the light-emitting element 31 or the surrounding environment. One advantage of the illumination device 9 of this embodiment over the illumination device 9 shown in Fig. 5 is that since the solar cell is disposed on the illumination body π instead of on the outer casing 4G, the volume of the outer casing 4G can be greatly reduced. The embodiments of the present invention have been described above, but the present invention is not limited to the specific systems, devices, and materials. Various changes or modifications may be made within the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS Other features, objects, and advantages of the invention will be apparent from the accompanying drawings. 1 is a side view of a light guide plate according to an embodiment of the present invention; FIG. 2 is a side view of a light guide plate according to an embodiment of the present invention; FIG. 3 is a view! Or an enlarged view of the surface structure of the surface structure in the elliptical dotted line portion of FIG. 2, 136309.doc -16-201020472; FIG. 4, including FIG. 4(1) and FIG. 4(2), is a guide according to an embodiment of the present invention. FIG. 5 is a side cross-sectional view and a plan view of a lighting apparatus according to an embodiment of the present invention; FIG. 6 is a side view and a plan view of the lighting apparatus according to still another embodiment of the present invention;
其中，相同或相似的附圖標記表示相同或相似的步驟特 徵或裝置（模組）。 【主要元件符號說明】 8 空氣 9 照明設備 9· 照明設備 10 導光板 10' 導光板 11 上表面 12 下表面 17 陡坡 17a 陡坡 17b 陡坡 18 緩坡 18a 緩坡 18b 緩坡 20 照明體 ❹ 136309.doc 201020472 21 偏轉裝置 21a 偏轉裝置 21b 偏轉裝置 22 偏轉裝置 31 發光元件 40 外殼 « 60 太陽能電池 61 電池 參 62 驅動裝置 A 偏轉裝置21a之緩坡18a與偏轉裝置21b之陡坡 17b之間的連接部位 B 偏轉裝置21b之陡坡17b所對應的部位 C 偏轉裝置21b之頂峰部位 D 偏轉裝置21a之緩坡1 8b所對應的部位 參 136309.doc -18-Wherein the same or similar reference numerals denote the same or similar step features or devices (modules). [Main component symbol description] 8 Air 9 Lighting equipment 9· Lighting equipment 10 Light guide plate 10' Light guide plate 11 Upper surface 12 Lower surface 17 Steep slope 17a Steep slope 17b Steep slope 18 Gentle slope 18a Slow slope 18b Slow slope 20 Illumination body 136309.doc 201020472 21 Deflection Device 21a deflection device 21b deflection device 22 deflection device 31 light-emitting element 40 housing « 60 solar cell 61 battery parameter 62 drive device A connection portion B between the gentle slope 18a of the deflection device 21a and the steep slope 17b of the deflection device 21b steep slope of the deflection device 21b Part C corresponding to 17b Peak portion D of deflecting device 21b Point portion corresponding to gentle slope 1 8b of deflecting device 21a 136309.doc -18-