201104161 六、發明說明： 【發明所屬之技術領域】 本發明是有關於一種發光模組，特別是指一種用於產 生光源的發光模組。 【先前技術】 發光二極體（Light Emitting Diode，LED)，或是高亮度 發光二極體（High Light Emitting Diode，HLED)具有壽命長 、體積小、小電流、無污染之特性，因此，在LED產業前 景一片看好時，LED照明燈具1已逐漸普及於日常生活， 參閱圖1，其主要是將數排LED光條u並排成一模組，外 加一擴散板（圖未示）後即可懸掛於天花板供照明使用。惟， 由於光通量過度集中於LED光源上，因此，直視光源時， 會出現眩光或不均勻的亮線（如附件丨），輝度之均勻度大約 只有20%(如附件2,均句度=最高的波峰值+最低的波谷值） 〇 為了改善前述缺失，政齊公司亦領先業界，開發出一 種以LED為光源且可拼接式（可擴充式）的背光模組，其概 念為：拼接模組化的小型背光模組，任意擴充至所需之面 積（如附件3，為4塊小尺寸背光模組拼接而成），此—突破 性之概念’具有可動態調整所需發光面積或排列圖案，及 可再利用性（其中-模組失效時，只需替換單一模組即可）的 優點，且已獲得多國專利權，如台灣專利第i24795 i號案、 美國專利第US7080933B2號案、日本專利第31〇53〇7號案 德國專利第20(2004)008454.6號案.等。 201104161 惟，由附件3、4可Γ2 ΒΘ Ss玉 了以明顯看出，靠近led光源處，仍 會有局部的亮點(hot sp〇ts)及亮線的產生，經模擬計 發現’亮線之輝度可高達平均輝度之3倍以上（如附件5)， 換言之，、其均句度只有約3〇%左右。故，由以上分析得知 ’ LED光源所造成之亮點或亮線問題，將大幅度地限制了 面光源的外觀舒適性與實用性。 【發明内容】 因此，本發明之目的，即在提供一種可以有效提升均 勻度，及擴增照明面積的發光模組。 、於是，本發明的發光模組’以至少一發光二極體做為 .光源’包3 -導光板，及至少一入光閘板。該導光板用於 導引入射光向外發散。該入光閘板與該導光板間形成有一 爽角’並具有鄰接該導光板的一入光端、面向該發光二極 體且供入射光進入的_光源端’及形成在該入射端與該光 源端間的-問it，該閘道是依據全反射現象導引入射光由 該入光端進入該導光板。 本發明的功效是利用該入光閘板間接導引入射光進入 該導光板，避免產生亮點或亮線，使該導光板產生均勻的 面光源，進而能擴增照明面積。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效’在 以下配&參考圖式之數個較佳實施例的詳細說明中，將可 清楚的呈現。 在本發明被詳細描述之前，要注意的是，在以下的說 201104161 明内容中，類似的元件是以相同的編號來表示。 參閱圖2、圖3、圖4，本發明發光模組的一第一較佳 實施例以數高亮度發光二極體2(HLED)做為光源，包含一 導光板3 '二入光閘板4、一光擴散板5，及數透鏡6。 該導光板3,具有相反方向的一板面31與另一板面32 、形成在該板面31且用於破壞全反射路徑而導引入射光向 外發散的數微結構33，及反向形成在二側且鄰接該等板面 31 ' 32的二側面34、35。該等微結構33以疏散的方式排 ⑩ 列形成有位於—中心線L二側的二低密度區33a，及以大於 該低密度區33a的密度形成有與該低密度區33&相間隔的三 间岔度區33b。該等微結構33可以是凸部、凹部及此等之 ’’且σ且迨型可以是V型、梯型、半圓型、網點及此等 之一組合。 該等入光閘板4分別具有一入光端41、一光源端& 及形成在該入射端41與該光源端42間的一閘道43 ^該入 光端^是相對該低密度區31a鄰接該導光板3板面μ的一 •偏〜位置，且與該導光板3 1間形成有約20度的一夾角^ 。該光源端42朝遠離該導光板3板面32的方向反向延伸 值知提的疋，該入光端41的徑寬大於該光源端42，藉 此，該入光閘板4在本較佳實施例概呈梯型。 該光擴散板5設置在該導光板3前方，用於修正出射 光的指向性角度。 &透鏡6用於封裝該等發光二極體2，且連同該等發光 °又置在該等入光閘板4的光源端42，用於收斂入 201104161 射光的發散角度，使絕大部份的入射光都可以順利的進入 該等入光閘板4，及依據全反射現象在該閘道43内行進， 而提升光的利用率。 當遠荨發光二極體2的入射光依循特定角度進入該等 入光閘板4後，會依據全反射現象在該閘道43内行進，且 由於該等入光閘板4的徑寬是由小漸大，因此，在該閘道 43内行進的入射光會在全反射過裎中擴張其發散角度，而 能以幅度較廣的作用區域由該入射端41進入該導光板3内 〇 當入射光進入該導光板3後，同樣會依據全反射現象 分別由入射的偏心位置分別朝圖面的左側，及朝圖面的右 側在該導光板3内行進，且在二個偏心位置間重疊交匯， 此時，該等微結構33會改變光的行進路徑，而破壞原本的 全反射路徑，使入射光朝前方發散。值彳寻一提的是，該高 密度區33b内呈密集排列的微結構33，可以使入射光在該 等微結構33間產生密集的光折射現象，進而導引入射光集 中朝則方發散，並提昇光亮度，該低密度區33a内呈疏散排 列的微結構33，則會使入射光在該等微結構33間產生較鬆 散的光折射現象’藉此，該導光板3的高密度區33b與低 密度區33a可以具有趨於一致的光輝度。 當然’ s亥等微結構33的深度及折射面的夾角變化，都 會改變光折射的效果，而能依據實際需求，對該等微結構 3.3做適當的配置。 參閱附件6、7，可以發現，印使不使用該光擴散板5 201104161 ’本發明的均勻度可以到達6〇%左右，相較於先前技術均 勻度約20%〜30%，明顯提升了 3()%以上，成功達到消除眩 光’及提升直視輝度舒適性的目標。 參閱附件8，當本發明使用該光擴散板5，雖然均勻度 问樣約為6G%左右’卻可以由角度圖及橫向角度剖線圖中 月顯看出，沒有設置該光擴散板5時，光線較集_於兩側 ’張角約7〇。’設置該光擴散板5後，可以將光線修正至中 央部位，張角可以達到120。，藉此，在能量分佈與輝度之 均勻度維持相同水準的情形下，達到一般照明的需求，適 用於日常生活及辦公環境。 參閱圖5,前述高均勻性的發純組設計完錢，就可 以依據實務需求，任意拼接至所需的面積’參閱附件9，者 拼接四塊發光模組時’整體的面光源均勾性仍然保持： 6〇%左右，足以證明此一技術的可行性與實用性。 參閲圖6,是本發明-第二較佳實施例，其與該第一較 佳實施例大致相同，不同虚力. 本發明的發光模組僅使 用單一個入光閘板4,且更包三反射件MU。 該導光板3上的數微結構33是由該側面^朝該側面 34的方向以疏散逐漸緻密的方式排列，該等側面μ、乃為 彼此相互平行的斜面，可用於與相鄰導光板3的側面I 34併接。 該入光閉板4的入光端41是鄰接該板面^且鄰近該 :面34。在本較佳的實施例’該入光端㈣該板面w 夹角Θ為65度，當夹角Θ太小時，光線會有平飛現象，致 201104161 使光線在該導光板3内反彈次數較少，而不容易控制出光 角度’當夾角0太大時’大部份的光線會直接穿出，而無 全反射現象。 該等反射件71、72分別設置在該導光板3的側面34、 3 5。該反射件73是沿垂直方向插置在該導光板3且鄰近該 側面35。該等反射件71、72、73用於反射入射光，防止該 導光板3的側面34、35有漏光現象。 當入射光由該入光閘板4進入該導光板3後，該反射 件71會反射入射光，使入射光依據全反射現象由入射的偏 心位置朝圖面左側在該導光板3内行進，再經該反射件72 、73反射入射光後，使入射光依據全反射現象朝圖面右側 在該導光板3内行進，此時，該等微結構33同樣會改變光 的行進路徑，而破壞原本的全反射路徑，使入射光朝前方 發散。 參閱附件1 〇，藉此，即使不使用該光擴散板5，本發 明第二較佳實施例的均勻度同樣可以到達60%左右，相較 於先前技術均勻度約2〇0/〇〜3〇%，亦提升了 3〇%以上，且由 角^圖及橫向角度剖線圖中可以㈣看出，沒有設置該光 擴散板5時’光線較集中於-側，張角約70。，設置該光擴 散板5後’可以將光線修正至中央部位，張角可以達到120 藉此，在能量分佈與輝度之均勻度維持相同水準的情形 同樣此達到一般照明的需求，適用於日常生活及辦公 環境。 據上所述可知’本發明之發光模組具有下列優點及功 201104161 效： 本發明疋以該等入光閘板4、7間接導引入射光進入該 導光板3、6，不但可以使明、暗差異性減至最小，有效消 除亮點或亮線的情形，且能使整體在光輝度方面產生均質 化的視覺效果，而適用於日常照明，有效提升使用上的實 用性。201104161 VI. Description of the Invention: [Technical Field] The present invention relates to a lighting module, and more particularly to a lighting module for generating a light source. [Prior Art] Light Emitting Diode (LED) or High Light Emitting Diode (HLED) has long life, small size, low current, and no pollution. Therefore, When the LED industry is promising, LED lighting 1 has gradually become popular in daily life. Referring to Figure 1, it is mainly to arrange several rows of LED strips u into a module, plus a diffuser (not shown). Can be hung from the ceiling for lighting. However, since the luminous flux is excessively concentrated on the LED light source, when the light source is directly viewed, glare or uneven bright lines (such as accessory 丨) may appear, and the uniformity of luminance is only about 20% (such as Annex 2, the average degree = the highest Wave peak + lowest trough value) 〇 In order to improve the aforementioned shortcomings, Zheng Qi Company also leads the industry and developed a backlight module with LED as the light source and splicable (expandable). The concept is: splicing module The small-sized backlight module can be arbitrarily expanded to the required area (such as accessory 3, which is a combination of four small-sized backlight modules). This is a breakthrough concept that has the ability to dynamically adjust the required light-emitting area or arrangement pattern. And reusability (in which - when the module fails, it only needs to replace a single module), and has obtained multi-national patents, such as Taiwan Patent No. i24795 i, US Patent No. US7080933B2, Japanese Patent No. 31〇53〇7, German Patent No. 20(2004) 008454.6. 201104161 However, it can be clearly seen from the attachments 3 and 4 Γ 2 ΒΘ Ss jade, close to the led light source, there will still be local highlights (hot sp〇ts) and the production of bright lines, the simulation shows that 'light line The luminance can be up to more than 3 times the average luminance (as in Annex 5). In other words, the average sentence is only about 3〇%. Therefore, from the above analysis, the problem of bright spots or bright lines caused by the LED light source will greatly limit the appearance comfort and practicability of the surface light source. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a lighting module that can effectively improve uniformity and amplify an illumination area. Therefore, the light-emitting module of the present invention has at least one light-emitting diode as the light source 'package 3 - the light guide plate, and at least one light-inserting plate. The light guide plate is used to guide the incident light to diverge outward. Forming a refreshing angle between the light-input shutter and the light guide plate and having a light-incident end adjacent to the light guide plate, a light source end facing the light-emitting diode and allowing incident light to enter, and being formed at the incident end Between the ends of the light source, the gate is guided by the total reflection phenomenon to enter the light guide plate from the light incident end. The function of the invention is to indirectly guide the incident light into the light guide plate by using the entrance shutter to avoid generating bright spots or bright lines, so that the light guide plate produces a uniform surface light source, thereby amplifying the illumination area. The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments. Before the present invention is described in detail, it is to be noted that in the following description, the similar elements are denoted by the same reference numerals. Referring to FIG. 2, FIG. 3 and FIG. 4, a first preferred embodiment of the light-emitting module of the present invention uses a high-brightness light-emitting diode 2 (HLED) as a light source, and includes a light guide plate 3' 4. A light diffusing plate 5 and a plurality of lenses 6. The light guide plate 3 has a plate surface 31 and another plate surface 32 in opposite directions, a micro-structure 33 formed on the plate surface 31 for destroying the total reflection path and guiding the incident light to diverge outward, and a reverse Two side faces 34, 35 are formed on both sides and adjacent to the plate faces 31'32. The microstructures 33 are formed in an evacuated manner with two low-density regions 33a on both sides of the center line L, and are formed at a density larger than the low-density region 33a from the low-density regions 33& Three latitude zones 33b. The microstructures 33 may be protrusions, recesses, and the like' and σ and the 迨 type may be a V-type, a ladder type, a semi-circular type, a dot, and a combination thereof. The light-input shutters 4 respectively have an light-incident end 41, a light source end & and a gate 43 formed between the incident end 41 and the light source end 42. The light-input end is opposite to the low-density area. 31a is adjacent to a position of the plate surface μ of the light guide plate 3, and forms an angle of about 20 degrees with the light guide plate 31. The light source end 42 extends in a direction away from the plate surface 32 of the light guide plate 3, and the diameter of the light incident end 41 is larger than the light source end 42. Thereby, the light entrance plate 4 is compared. The preferred embodiment is a ladder type. The light diffusing plate 5 is disposed in front of the light guide plate 3 for correcting the directivity angle of the emitted light. The lens 6 is used to package the light-emitting diodes 2, and together with the light-emitting elements, is disposed at the light source end 42 of the light-increasing shutter 4 for converging into the divergence angle of the 201104161 light, so that most of the light-emitting diodes The incident light can smoothly enter the light-increasing shutter 4, and travels in the gate 43 according to the total reflection phenomenon, thereby improving the utilization of light. When the incident light of the remote light-emitting diode 2 enters the light-increasing shutter 4 according to a specific angle, the light travels in the gate 43 according to the total reflection phenomenon, and since the diameter of the light-increasing shutter 4 is Increasingly, the incident light traveling in the gateway 43 expands its divergence angle in the total reflection enthalpy, and can enter the light guide plate 3 from the incident end 41 with a wide range of action regions. When the incident light enters the light guide plate 3, the incident eccentric position is respectively moved toward the left side of the drawing surface and the right side of the drawing surface in the light guide plate 3 according to the total reflection phenomenon, and between the two eccentric positions. The overlapping intersections, at this time, the microstructures 33 change the path of the light, destroying the original total reflection path, causing the incident light to diverge forward. It is to be noted that the densely arranged microstructures 33 in the high-density region 33b can cause incident light to cause dense light refraction between the microstructures 33, thereby guiding the incident light to converge toward the square. And increasing the brightness, the microstructures 33 in the low-density region 33a are arranged in an evacuated manner, which causes the incident light to have a relatively loose light refraction phenomenon between the microstructures 33. Thereby, the high density of the light guide plate 3 The region 33b and the low density region 33a may have a uniform luminance. Of course, the depth of the microstructure 33 such as shai and the change of the angle of the refractive surface will change the effect of light refraction, and the microstructures 3.3 can be properly configured according to actual needs. Referring to the attachments 6, 7 , it can be found that the light diffusing plate 5 201104161 is not used. The uniformity of the invention can reach about 6〇%, which is about 20%~30% compared with the prior art uniformity, which is obviously improved by 3. ()% or more, successfully achieved the goal of eliminating glare' and improving the comfort of direct vision. Referring to the eighth embodiment, when the light diffusing plate 5 is used in the present invention, although the uniformity is about 6 G%, it can be seen from the angle diagram and the horizontal angle line drawing, when the light diffusing plate 5 is not provided. The light is more concentrated than the _ on both sides of the opening angle of about 7 〇. After the light diffusing plate 5 is set, the light can be corrected to the central portion, and the opening angle can reach 120. Therefore, in the case where the energy distribution and the uniformity of the luminance are maintained at the same level, the demand for general illumination is achieved, and it is suitable for daily life and office environment. Referring to FIG. 5, the above-mentioned high-uniformity pure group design is completed, and the splicing can be arbitrarily spliced to the required area according to the practical requirements'. Referring to Annex 9, when splicing four light-emitting modules, the overall surface light source is hooked. Still maintained: about 6〇%, enough to prove the feasibility and practicality of this technology. Referring to FIG. 6, a second preferred embodiment of the present invention is substantially the same as the first preferred embodiment, and has different virtual forces. The light-emitting module of the present invention uses only a single light-inserting shutter 4, and The package three reflectors MU. The micro-structures 33 on the light guide plate 3 are arranged in a direction in which the side faces are gradually densified toward the side faces 34. The side faces μ are inclined faces parallel to each other and can be used for the adjacent light guide plates 3 . The side I 34 is connected in parallel. The light incident end 41 of the light-receiving plate 4 is adjacent to the plate surface and adjacent to the surface 34. In the preferred embodiment, the angle Θ of the plate surface w is 65 degrees. When the angle Θ is too small, the light will fly flat, and 201104161 causes the light to rebound in the light guide plate 3. Less, it is not easy to control the light angle 'When the angle 0 is too large', most of the light will pass directly without total reflection. The reflectors 71 and 72 are respectively disposed on the side faces 34 and 35 of the light guide plate 3. The reflecting member 73 is inserted in the vertical direction in the light guide plate 3 and adjacent to the side surface 35. The reflecting members 71, 72, 73 are for reflecting incident light to prevent light leakage from the side faces 34, 35 of the light guiding plate 3. When the incident light enters the light guide plate 3 from the light-increasing shutter 4, the reflecting member 71 reflects the incident light, so that the incident light travels in the light guide plate 3 from the incident eccentric position toward the left side of the drawing according to the total reflection phenomenon. After the incident light is reflected by the reflectors 72 and 73, the incident light is caused to travel in the light guide plate 3 toward the right side of the drawing according to the total reflection phenomenon. At this time, the microstructures 33 also change the traveling path of the light and destroy. The original total reflection path diverges the incident light toward the front. Referring to the attachment 1 〇, even if the light diffusing plate 5 is not used, the uniformity of the second preferred embodiment of the present invention can reach about 60%, which is about 2〇0/〇~3 compared to the prior art uniformity. 〇% is also increased by more than 3%, and it can be seen from the angle diagram and the horizontal angle line drawing (4) that when the light diffusing plate 5 is not provided, the light is concentrated on the side, and the opening angle is about 70. After the light diffusing plate 5 is set, the light can be corrected to the central portion, and the opening angle can reach 120. Therefore, the same level of energy distribution and brightness uniformity can be achieved, which is suitable for general lighting and is suitable for daily life and Office environment. It can be seen from the above that the illuminating module of the present invention has the following advantages and functions: the invention: the present invention 间接 indirectly guides the incident light into the light guiding plates 3 and 6 by the light-introducing shutters 4, 7, which can not only make the light The dark difference is minimized, the bright spot or the bright line is effectively eliminated, and the overall visual effect of homogenization is obtained in terms of brightness, which is suitable for daily illumination, and effectively improves the practicality of use.
惟以上所述者’僅為本發明之較佳實施例而已，當不 能以此限定本發明實施之範圍，即大凡依本發明申請專利 範圍及發明說明内容所作之簡單的等效變化與修飾，皆仍 屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 圖1是一立體圖，說明一般使用發光二極體的昭明严 具； 1 圖2是一立體分解圖，說明本發明一發光模組的—第 一較佳實施例； 圖3是該第一較佳實施例的一正視圖； 圖4是該第一較佳實施例的一頂視圖； 圖5是該第一較佳實施例相互併接的一頂視圖；及 圖6是一正視圖，說明本發明一發光模组的一第二 佳實施例。 又 附件1 : 一般照明燈具的照度圖； 附件2 :前述附件1的橫向照度剖線圖； 附件3 : 4塊小尺寸背光模組的拼接圖； 附件4 :前述附件3中其中一背光模組的照度圖； 201104161 附件5 :前述附件4的橫向照度剖線圖； 附件6 :本發明—第一較佳實施例中無光擴散片的照度 圖； 附件7 ·則述附件ό的橫向照度剖線圖； 附件8.本發明該第—較佳實施例中無光擴散片及有光 擴散片的比較圖； 附件9:本發明―第二較㈣施财無光擴散片的照度 附件10 :本發明該苐 光擴散片的比較圖。 一較佳實施例中無光擴散片 及有 10 201104161 【主要元件符號說明】 2 ..........發光二極體 3 ..........導光板 3 1.........板面 3 2.........板面 33.........微結構 33a.......低密度區 33b.......高密度區 _ 34………側面 35.........側面 4 ..........入光閘板 41 .........入光端 42 .........光源端 43 .........閘道 5 ..........光擴散板 6 ..........透鏡 71 .........反射件 72 .......反射件 73 .......反射件However, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention, All remain within the scope of the invention patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a general use of a light-emitting diode; FIG. 2 is an exploded perspective view showing a first preferred embodiment of a light-emitting module of the present invention; 3 is a front view of the first preferred embodiment; FIG. 4 is a top view of the first preferred embodiment; FIG. 5 is a top view of the first preferred embodiment connected to each other; and FIG. It is a front view showing a second preferred embodiment of a light emitting module of the present invention. Attachment 1 : Illumination diagram of general lighting fixtures; Annex 2: transverse illumination section diagram of Annex 1 above; Annex 3: mosaic diagram of 4 small-size backlight modules; Annex 4: One of the backlight modules in Annex 3 Illumination diagram; 201104161 Annex 5: transverse illuminance line drawing of the aforementioned Annex 4; Annex 6: illuminance diagram of the non-light diffusion sheet of the present invention - the first preferred embodiment; Annex 7 · Lateral illumination section of the attachment ό Figure 8. Comparison of the non-light diffusing sheet and the light diffusing sheet in the first preferred embodiment of the present invention; Annex 9: illuminance attachment 10 of the second comparative (four) wealth-free diffusing sheet of the present invention: A comparison diagram of the calendering sheet of the present invention. In a preferred embodiment, the light-free diffusing film has 10 201104161 [Description of main component symbols] 2 ..... Light-emitting diode 3 .......... Light-guiding plate 3 1 ......... board surface 3 2......... board surface 33.........microstructure 33a.......low density area 33b.. ..... high density area _ 34......... side 35......... side 4 .......... into the shutter 41 ......... Light-input end 42 ... ... light source end 43 ... ... gateway 5 .......... light diffuser 6 ........ .. lens 71 .........reflecting member 72 .... reflecting member 73 .... reflecting member
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