1363159 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種發光單元，特別關於一種具有集光 • 體的發光單元。1363159 IX. Description of the Invention: [Technical Field] The present invention relates to a light-emitting unit, and more particularly to a light-emitting unit having a light-collecting body.
W 【先前技術】 由於發光二極體（Light Emitting Diode，LED)具有高 φ 冗度及省電等優點，因此，隨著發光二極體的技術逐漸成 熟，其應用領域也越來越廣泛，例如照明設備及其他電子 裝置的光源。 睛參照圖1所示，一種習知之發光單元丨包含複數發 光二極體11及一殼體H1。·發光單元丨係藉由諒等發光二 極體11排列在同一平面上，以使該等發光二極體^所發 出之光線由點光源集聚形成一面光源。但，發光單元i並 $對該等發光：極體η所發出之綠進行混^，因此， _當某些發光二極體u損壞時，不僅發光單元i的亮度會 降低，且在才貝壞之發光二極體u處亦會形成明顯的暗區； 而且因為發光一極體u彼此的壽命不一致，因此在使用 一段時間後，容易於出光面產生亮度與色度不均勻的現象 降低產品的品質。 另外，叫參照圖2所示，另一種習知之發光單元2包 S發光一極體21及一出光體23。發光二極體21設置於 出光體23的端冑，出光體23為可透光材質，發光二極體 21所發出之光線先射人出光體23後才射出，故可由點光 1363159 源轉變為線光源。然而，由於發光二極體21設置於出光 體23的端部，因此，發光二極體21的數量受限於出光體 23的端部面積而無法增加，進而也造成出光體23的亮度 無法提升。 二 因此，如何設計一種能均勻混光且可提高亮度的發光 單元，實屬目前重要課題之一。 I 【發明内容】 有鑑於上述課題，本發明之目的為提供一種能均勻混 光且可提高亮度的發光單元。 緣是，為達上述目的，依據本發明之一種發光單元包 ' 含至少一條形集光體及至少一發光二極體模組。條形集光 - 體具有一端部，發光二極體模組具有一電路板及複數發光 二極體。該等發光二極體設置於電路板上，發光二極體模 組與條形集光體對應設置，該等發光二極體發出的光線入 • 射條形集光體混光後，由條形集光體之端部之一出光面射 出。 承上所述，因依據本發明之一種發光單元係利用一條 形集光體來使複數發光二極體所發出的光進行混光，並產 生聚光（condense )效果，以提高發光單元的亮度。藉此， 可避免該等發光二極體間的些許波長差異、老化或損壞所 產生的影響，故對於該等發光二極體中的晶片，不但可以 放寬挑選的波峰波長規格，並可以延長使用上的品質與使 用壽命，進而降低材料成本。 1363159 【實施方式】 以下將參照相關圖式，說明依據本發明之一種發光單 元，其中相同元件係以相同標號表示。 ’ 第一實施例 : 請參照圖3所示，本發明第一實施例之一種發光單元 3包含至少一條形集光體31及至少一發光二極體模組 32。其中，發光單元3可應用於手電筒、交通號誌燈’投 影筆或探照燈等照明裝置。 條形集光體31具有一端部311，條形集光體31之讨 料例如為聚苯乙烯（polystyrene, PS )、聚破酸适曰 (polycarbonate, PC )、苯乙烯-甲基丙烯酸曱酯樹脂 (methylstyrene, MS )、 聚甲基丙烯酸曱酯 . (polymethylmethacrylate，PMMA )或玻璃至少其中之一。 條形集光體31之截面形狀例如為四邊形、三角形、多邊 形、凸多邊形、凹多邊形、圓形或橢圓形，於本實施例中， • 條形集光體31之截面以四邊形為例作說明。 發光二極體模組32與條形集光體31對應設置，其 中’對應设置例如為鄰設或欲入等設置方式，於本實施例 中以鄰設為例作說明。發光二極體模組32平行於條形集 光體31之長軸方向L1，發光二極體模組32具有一電路板 321及複麩發光二極體322，其中，電路板321例如為一 玻璃基板、一樹脂基板、一陶瓷基板或一金屬基板，而該 等發光二極體322係設置於電路板321上’且該等發光二 極體322可利用串聯、並聯或串並聯方式相互電性連接。 1363159 該等發光二極體322可選自紅色發光二極體、綠色發光二 極體、藍色發光二極體、黃色發光二極體、白色發光二極 體、紫外光發光二極體及其組合所構成的群組，而且發光 二極體322可為一發光二極體晶粒或一已封裝的發光二極 體。其中，該等發光二極體322所發出的光線可為同色光 或混合光（例如：白光）。 3 該等發光二極體322發出的光線射入條形集光體31 後，藉由全反射於條形集光體31中行進並先行混光，再 由條形集光體31之端部311的出光面312射出。其中， 出光面312之出光功率會大於該等發光二極體322之總發 光功率的60%，藉此，除可提高發光單元3的亮度外，由 於發光單元3之發光二極體模組32所發出的光線可先藉 由條形集光體31内的全反射原理進行均勻混光，所以可 避免該等發光二極體322間無法避免的些許波長差異所產 生的影響，並發出均勻的光線。並對於該等發光二極體322 中的晶片，可以放寬挑選的波峰波長規格，進而降低材料 成本。 另外，請同時參照圖3、圖4A及圖4B，為使該等發 光二極體322所發出的光線較易於條形集光體31内產生 全反射而傳遞，可選用平行於條形集光體31的一長軸方 向L1具有一第一光形分布（如圖4A之虛線所示），而垂 直於條形集光體31的長軸方向（即入射圖面的方向）則 具有一比第一光形分布窄之第二光形分布（如圖4B之虛 線所示）的發光二極體322。 1363159 接著，請參照圖5A所示，發光單元3a為了提高發光 二極體322發出的光線於條形集光體31a内之全反射率， 條形集光體31a之一入光面313上更可具有複數導光結構 314，導光結構314係分別對應各發光二極體322設置， 其中導光結構314之形狀係非限制性，端以能散射發光二 極體322發出的光線，以提高光線於條形集光體31内之 全反射率而可傳遞光線為優先考量。於此值得一提的是， 導光結構314亦可為一微結構，例如為一微透鏡結構、一 微菱鏡結構或一粗糙面結構。 其中，相鄰的二發光二極體322相距一第一距離dl， 且二發光二極體322所發出之光線於出光面312上各具有 一光強度中心點，該等光強度中心點彼此相距一第二距離 d2，第一距離dl大於第二距離d2。藉此，可使發光單元 3a產生聚光（condense)效果。 請參照圖5B所示，發光單元3b若條形集光體31上 未設置導光結構，為了提高光線於條形集光體31内之全 反射率，亦可利用一稜鏡膜片323設置於發光二極體322 與條形集光體31之間，或者，請參照圖5C所示，於發光 單元3c中透鏡323a亦可設置於各發光二極體322之上， 其中透鏡323a係以三角菱鏡為例。 請參照圖6A所示，發光單元3d亦可具有複數發光二 極體模組32，條形集光體31b則具有一開孔315，該等發 光二極體模組32係設置於條形集光體31b之複數側。因 此，藉由開孔315與條形集光體31b之間的結構與折射率 1363159 面316，將該等發光二極體322所發出之 光強度做空間的能量分配，使出射_集光 體的光線更加均勾。其中，開孔3i5係以一三角护 孔=15為例，需注意者，開孔315的形狀係非限制性 心：射=集光體31b的光線更加均勾為 另外，请參照圖6B所示，發光單元 開孔3153形狀的條形集光體叫例如開孔形狀為1 有菱不/) 2光轉向面316’並將發光二極體模幻 隼 / 光單元出射。 ι照圖6C所示，發光單元3f具有 ⑽，且該等條形集光體31d分別具有一缺 ^轉^面316,藉此除了可使出射條形集光體3ld的光線 更可讓光線由發光單元对的兩側出射，以增 加卷光早7L 3f的應用範圍。 缺口 所示’條形集光體仏具有不同形狀的 的#绩/1成先轉向面316,同樣可使出射發光單元％ =更加均句。請參照圖6E所示，條形集光體3㈣可 ==形狀的缺口 317b，藉由空氣與條形集光體^之 曰、率的差異，將發光二極體模組32所發出t光線的 =光強度做空間的能量分配，使出射發光單= 光線更加均勻。W [Prior Art] Since the Light Emitting Diode (LED) has the advantages of high φ redundancy and power saving, the application field of the LED is becoming more and more extensive as the technology of the LED is gradually matured. For example, lighting equipment and other electronic devices. Referring to Fig. 1, a conventional light-emitting unit 丨 includes a plurality of light-emitting diodes 11 and a casing H1. The light-emitting units are arranged on the same plane by the light-emitting diodes 11, so that the light emitted by the light-emitting diodes is concentrated by the point source to form a light source. However, the light-emitting unit i and the light-emitting: the green light emitted by the polar body η is mixed, and therefore, when some of the light-emitting diodes u are damaged, not only the brightness of the light-emitting unit i is lowered, but also The bad light-emitting diodes also form obvious dark areas; and because the lifetimes of the light-emitting diodes u are inconsistent, it is easy to produce brightness and chromaticity unevenness on the light-emitting surface after using for a period of time. Quality. Further, as shown in Fig. 2, another conventional light-emitting unit 2 includes a light-emitting body 21 and a light-emitting body 23. The light-emitting diode 21 is disposed at the end of the light-emitting body 23, and the light-emitting body 23 is made of a light-transmitting material. The light emitted by the light-emitting diode 21 is first emitted after the light-emitting body 23 is emitted, so that the light can be converted from the source of the light 1363159 to Line source. However, since the light-emitting diode 21 is disposed at the end of the light-emitting body 23, the number of the light-emitting diodes 21 is limited by the end area of the light-emitting body 23, and the brightness of the light-emitting body 23 cannot be increased. . Therefore, how to design a light-emitting unit that can uniformly mix light and improve brightness is one of the important topics at present. SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a light-emitting unit capable of uniformly mixing light and improving brightness. Therefore, in order to achieve the above object, a light-emitting unit package according to the present invention includes at least one shape-collecting body and at least one light-emitting diode module. The strip-shaped light-collecting body has one end portion, and the light-emitting diode module has a circuit board and a plurality of light-emitting diodes. The light-emitting diodes are disposed on the circuit board, and the light-emitting diode modules are disposed corresponding to the strip-shaped light-collecting bodies, and the light emitted by the light-emitting diodes is mixed into the light-collecting light-collecting body One of the ends of the shaped light body is emitted from the light exiting surface. According to the above description, a light-emitting unit according to the present invention uses a strip-shaped light-collecting body to mix light emitted by a plurality of light-emitting diodes, and generates a condense effect to improve the brightness of the light-emitting unit. . Thereby, the influence of some wavelength difference, aging or damage between the light-emitting diodes can be avoided, so that the selected wave-wavelength specifications can be relaxed and extended for the wafers in the light-emitting diodes. Quality and service life, which in turn reduces material costs. 1363159 [Embodiment] Hereinafter, a light-emitting unit according to the present invention will be described with reference to the related drawings, wherein the same elements are denoted by the same reference numerals. First Embodiment: Referring to FIG. 3, a light-emitting unit 3 according to a first embodiment of the present invention includes at least one shape-collecting body 31 and at least one light-emitting diode module 32. Among them, the light-emitting unit 3 can be applied to a lighting device such as a flashlight, a traffic light, a projection pen or a searchlight. The strip-shaped light-collecting body 31 has one end portion 311, and the strip-shaped light-collecting body 31 is, for example, polystyrene (PS), polycarboxylate (PC), styrene-methyl methacrylate. At least one of a resin (methylstyrene, MS), polymethylmethacrylate (PMMA) or glass. The cross-sectional shape of the strip-shaped light-collecting body 31 is, for example, a quadrangle, a triangle, a polygon, a convex polygon, a concave polygon, a circle, or an ellipse. In the present embodiment, the cross section of the strip-shaped light-collecting body 31 is exemplified by a quadrangle. . The light-emitting diode module 32 is disposed corresponding to the strip-shaped light-collecting body 31, and the corresponding arrangement of the light-emitting diode module 32 is, for example, adjacent or intended to be placed, and is described as an example in the present embodiment. The light emitting diode module 32 is parallel to the long axis direction L1 of the strip light collecting body 31. The light emitting diode module 32 has a circuit board 321 and a double-breasted light emitting diode 322. The circuit board 321 is, for example, a a glass substrate, a resin substrate, a ceramic substrate or a metal substrate, and the light emitting diodes 322 are disposed on the circuit board 321 and the light emitting diodes 322 can be electrically connected by series, parallel or series and parallel Sexual connection. 1363159 The light-emitting diodes 322 can be selected from the group consisting of a red light-emitting diode, a green light-emitting diode, a blue light-emitting diode, a yellow light-emitting diode, a white light-emitting diode, an ultraviolet light-emitting diode, and The group formed by the combination, and the light-emitting diode 322 can be a light-emitting diode die or an encapsulated light-emitting diode. The light emitted by the light-emitting diodes 322 may be the same color light or mixed light (for example, white light). 3 After the light emitted from the light-emitting diodes 322 is incident on the strip-shaped light-collecting body 31, the light is uniformly reflected in the strip-shaped light-collecting body 31 and mixed first, and then the end of the strip-shaped light-collecting body 31 The light exit surface 312 of 311 is emitted. The light outputting power of the light emitting surface 312 is greater than 60% of the total light emitting power of the light emitting diodes 322, thereby eliminating the brightness of the light emitting unit 3, and the light emitting diode module 32 of the light emitting unit 3 The emitted light can be uniformly mixed by the principle of total reflection in the strip-shaped light-collecting body 31, so that the influence of some wavelength differences which cannot be avoided between the light-emitting diodes 322 can be avoided, and uniformity can be emitted. Light. For the wafers in the light-emitting diodes 322, the selected peak wavelength specifications can be relaxed, thereby reducing the material cost. In addition, please refer to FIG. 3, FIG. 4A and FIG. 4B at the same time, in order to make the light emitted by the light-emitting diodes 322 relatively easy to be totally reflected in the strip-shaped light-collecting body 31, and it is possible to use parallel to the strip-shaped light collecting. A major axis direction L1 of the body 31 has a first light-shaped distribution (shown by a broken line in FIG. 4A), and has a ratio perpendicular to the long-axis direction of the strip-shaped light-collecting body 31 (ie, the direction of the incident surface). The first light pattern has a narrow second light distribution (shown by the dashed line in FIG. 4B) of the light emitting diode 322. 1363159 Next, as shown in FIG. 5A, in order to increase the total reflectance of the light emitted from the light-emitting diode 322 in the strip-shaped light-collecting body 31a, one of the strip-shaped light-collecting bodies 31a is incident on the light-emitting surface 313. The light guiding structure 314 can be disposed corresponding to each of the light emitting diodes 322, wherein the shape of the light guiding structure 314 is non-limiting, and the light is scattered at the end to enhance the light emitted by the light emitting diode 322. The light is transmitted to the total reflectance of the strip-shaped light-collecting body 31 to transmit light as a priority. It should be noted that the light guiding structure 314 can also be a microstructure, such as a microlens structure, a micro-mirror structure or a rough surface structure. The adjacent two light-emitting diodes 322 are separated by a first distance dl, and the light emitted by the two light-emitting diodes 322 has a light intensity center point on the light-emitting surface 312, and the light intensity center points are apart from each other. A second distance d2, the first distance dl is greater than the second distance d2. Thereby, the light-emitting unit 3a can be made to have a condense effect. As shown in FIG. 5B, if the light-emitting unit 3b is not provided with a light-guiding structure on the strip-shaped light-collecting body 31, in order to increase the total reflectance of the light in the strip-shaped light-collecting body 31, a diaphragm 323 may be used. Between the light-emitting diode 322 and the strip-shaped light-collecting body 31, or as shown in FIG. 5C, the lens 323a may be disposed on each of the light-emitting diodes 322 in the light-emitting unit 3c, wherein the lens 323a is Take the triangle mirror as an example. As shown in FIG. 6A, the light-emitting unit 3d may also have a plurality of light-emitting diode modules 32. The strip-shaped light-collecting body 31b has an opening 315. The light-emitting diode modules 32 are disposed on the strip-shaped set. The plural side of the light body 31b. Therefore, by the structure between the opening 315 and the strip-shaped light-collecting body 31b and the refractive index 1363159 surface 316, the light intensity of the light-emitting diodes 322 is spatially distributed, so that the emission_light collecting body The light is even more hooked. The opening 3i5 is exemplified by a triangular guard hole=15. It should be noted that the shape of the opening 315 is unrestricted: the light of the light-collecting body 31b is more uniformly, please refer to FIG. 6B. It is to be noted that the strip-shaped light-collecting body of the shape of the light-emitting unit opening 3153 is, for example, an open-hole shape of 1 and has a light-conducting surface 316' and emits a light-emitting diode phantom/light unit. As shown in FIG. 6C, the light-emitting unit 3f has (10), and the strip-shaped light-collecting bodies 31d respectively have a missing surface 316, whereby the light of the strip-shaped light-collecting body 3ld can be made lighter. It is emitted by both sides of the pair of light-emitting units to increase the application range of 7L 3f early. The 'bar-shaped light-collecting body 所示 shown by the notch has a different shape of the #1 / 1 into the first turning surface 316, and the outgoing light-emitting unit % = more uniform. Referring to FIG. 6E, the strip-shaped light-collecting body 3 (4) can be a shape-shaped notch 317b, and the light-emitting diode module 32 emits t-rays by the difference between the air and the strip-shaped light-collecting body. = Light intensity makes the energy distribution of the space, so that the outgoing light single = the light is more uniform.
Μ二實施乜I 參關7Α及圖7叫㈣本發㈣二實施例之 ’早7G 4’其中圖7Β為發光單元4沿圖7Α巾α_α直線 10 1363159 的剖面圖。發光單元4包含一條形集光體41及複數發光 二極體模組42，條形集光體41具有一端部411、一出光 面412、一入光面413及一光轉向面416。發光單元4與 第一實施例的差異在於：條形集光體41為圓柱體，並具 有一空腔418,且該等發光二極體模組42以嵌入方式對應 設置於空腔418内。如此一來，該等發光二極體422所發 出光線同樣由入光面413射入，並由光轉向面416轉向， 再由出光面412射出。 藉此，可利用不同的形狀條形集光體41，來增加發光 單元4的應用範圍。 另外，請同時參照圖8A及圖8B所示為第二實施例之 發光單元4a之另一變化態樣示意圖，其中圖8B為發光單 元4a沿圖8A中B-B直線的剖面圖。發光單元4a之條形 集光體41a為長條型圓錐體，而空腔418a位於條形集光體 41a橫截面面積較小的一端，該等發光二極體模組42同樣 以嵌入方式對應設置於空腔418a内。藉由於空腔418a中 容置較多的發光二極體422，可以提高發光單元4a的亮 度，且利用條形集光體41a不同的形狀，亦可增加發光單 元4a的應用範圍。 請同時參照圖9A及圖9B所示為第二實施例之發光單 元4b之又一變化態樣示意圖，其中圖9B為發光單元4b 沿圖9A中C-C直線的剖面圖。發光單元4b之條形集光體 41b由一圓柱體及一立方體所組成。其中，條形集光體41b 同樣具有一空腔418b位於條形集光體41b立方體的一 1363159 端。該等發光二極體模組42則對應空腔418b之位置，鄰 設於條形集光體41b。 請同時參照圖10A及圖10B所示為本發明第二實施例 發光單元4c之再一變化態樣示意圖，其中圖10B為發光 單元4c沿圖10A之D-D直線的剖面圖。條形集光體41c 亦具有一空腔418c，且空腔418c係為真空或充填有一氣 體、一流體或一膠體。另外，若空腔418c充填流體或膠體， 則流體或膠體内可具有複數擴散粒子。藉此，利用氣體、 流體或膠體與條形集光體41c之間折射率的差異，將發光 二極體模組42所發出之光線的光形與光強度做空間的能 量分配，使光線由出光面412c出射發光單元4c時混光更 加均勻。 第三實施例 請同時參照圖11A及圖11B所示為本發明第三實施例 之發光單元5，其中圖11B為發光單元5沿圖11A之E-E 直線的剖面圖。發光單元5包含一條形集光體51及複數 發光二極體模組52，發光單元5與第一實施例的差異在 於：條形集光體51係穿設發光二極體模組52，發光二極 體模組52之該等發光二極體522垂直於條形集光體51之 長轴方向L1設置。其中’各發光二極體模組52之電路板 521之形狀例如中空環形、半環形、中空方形、中空長方 形或门形，於本實施例以中空方形為例作說明。 另外，請參照圖12A所示為第三實施例之發光單元5a 之另一變化態樣示意圖。發光二極體模組52a之電路板（例 12 =為=路板）521“系呈螺旋狀環繞於條形集光體 該4發光二極體522環繞條形集光體5la排列設置。 =此’同樣可增加發光單元5a的出㈣度。另夕卜請參照 圖12B所示，於發来嚴开+ 碑… 發先早兀5b令，發光二極體模組52b呈 電路板521b ’亦可面對於條形集光體&作環 、兀’該等發光二極體522設置於啟γ隹丨_ 咖之間。 4於條轉光體…與電路板 1四實施你丨 請參照圖13A所示，太蘇日日势 _ 盤贫^A 發月第四實細例之發光單元ό f第^施例發光單元3的差異在於：發光單元6更包含 出^體63。出光體63之材料可利用與條形集光體η相 问：材料’例如為PS、Pc、Ms、PMMA或玻璃至少其中 之一。出光體63之截面可例如為四邊形、三角形 :光形:凹多邊形、圓形或橢圓形，於本實施例中， -之截面同樣以四邊形為例作說明。 出光體63係與條形集光體61之出光面612連接由 ^面612射出之光線係入射出光體63，且出光體幻之 長轴方向L2係與條形集㈣61之長軸方向li垂直。 ^卜^光體63之表面631可形成—粗化結構（例如喷 出光體63的表面631)、一網點印刷結構或一微結構 如為-微透鏡結構或一微菱鏡結構），以使 面631出射。 巾衣 立另外，出光體63與條形集光體61之間係可藉由 件c作連接，連接件C可例如為具有斜角的三角菱鏡， 1363159 或是一反射罩（圖中未顯示），以導引光線至出光體63。 當然，在製作上亦可將條形集光體61與出光體63 —體成 型，甚至出光體63、條形集光體61與連接件C三者可藉 ' 由射出成型方式一體成型。連接件C功能係將條形集光體 61射出的光線折射，以使光線進入出光體63中。 承上所述，各發光二極體622發出的光線先於條形集 光體61中混光，再由條形集光體61之出光面612射入出 > 光體63,並經由出光體63的表面射出。藉此，由於發光 單元6之發光二極體模組62所發出的光線可先於條形集 光體61中均勻混光，進而可使出光體63擬似成一發光 條，並發出均勻的光線。 請參照圖13B所示，發光單元6a之出光體63的長轴 方向L2亦可與條形集光體61的長軸方向L1平行，同樣 利用連接件C連接。因此，各發光二極體622發出的光線 於條形集光體61中混光後，由出光面612射出並經連接 丨 件C折射射入出光體63，再經由出光體63的表面射出。 請參照圖13C所示為本實施例之發光單元的另一變化 態樣。發光單元6b更可包含一反射層64、至少一濾光片 65、至少一螢光轉換材料66及至少一光學感測器 (photosensor) 67。其中，反射層64設置於條形集光體 61相對於出光面612之另一端部，濾光片65、螢光轉換 材料66及光學感測器67設置於條形集光體61出光面612 上，於此以光學感測器67鄰設於濾光片65為例。 藉由反射層64的設置可使條形集光體61的出光集中ΜI implementation I Α Α 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 The light-emitting unit 4 includes a strip-shaped light-collecting body 41 and a plurality of light-emitting diode modules 42. The strip-shaped light-collecting body 41 has an end portion 411, a light-emitting surface 412, a light-incident surface 413, and a light-converting surface 416. The difference between the light-emitting unit 4 and the first embodiment is that the strip-shaped light-collecting body 41 is a cylinder and has a cavity 418, and the light-emitting diode modules 42 are correspondingly disposed in the cavity 418 in an embedded manner. In this way, the light emitted by the light-emitting diodes 422 is also incident on the light-incident surface 413, is turned by the light-converting surface 416, and is emitted by the light-emitting surface 412. Thereby, the strip-shaped light-collecting bodies 41 of different shapes can be utilized to increase the application range of the light-emitting unit 4. In addition, please refer to FIG. 8A and FIG. 8B for another variation of the light-emitting unit 4a of the second embodiment, wherein FIG. 8B is a cross-sectional view of the light-emitting unit 4a taken along line B-B of FIG. 8A. The strip-shaped light-collecting body 41a of the light-emitting unit 4a is an elongated cone, and the cavity 418a is located at one end of the strip-shaped light-collecting body 41a having a small cross-sectional area, and the light-emitting diode modules 42 are also embedded in the same manner. Disposed within the cavity 418a. By accommodating a large number of the light-emitting diodes 422 in the cavity 418a, the brightness of the light-emitting unit 4a can be improved, and the application range of the light-emitting unit 4a can be increased by the different shapes of the strip-shaped light-collecting bodies 41a. Referring to FIG. 9A and FIG. 9B, FIG. 9B is a cross-sectional view showing another embodiment of the light-emitting unit 4b of the second embodiment, wherein FIG. 9B is a cross-sectional view of the light-emitting unit 4b taken along line C-C of FIG. 9A. The strip-shaped light-collecting body 41b of the light-emitting unit 4b is composed of a cylinder and a cube. The strip-shaped light-collecting body 41b also has a cavity 418b at a 1363159 end of the cube of the strip-shaped light-collecting body 41b. The LED modules 42 correspond to the positions of the cavities 418b and are disposed adjacent to the strip-shaped light-collecting bodies 41b. 10A and FIG. 10B are schematic views showing still another variation of the light-emitting unit 4c according to the second embodiment of the present invention, wherein FIG. 10B is a cross-sectional view of the light-emitting unit 4c taken along line D-D of FIG. 10A. The strip light collector 41c also has a cavity 418c, and the cavity 418c is vacuum or filled with a gas, a fluid or a gel. Alternatively, if the cavity 418c is filled with a fluid or colloid, the fluid or gel may have a plurality of diffusing particles. Thereby, by utilizing the difference in refractive index between the gas, the fluid or the colloid and the strip-shaped light-collecting body 41c, the light shape and the light intensity of the light emitted by the light-emitting diode module 42 are spatially distributed, so that the light is When the light-emitting surface 412c exits the light-emitting unit 4c, the light mixing is more uniform. THIRD EMBODIMENT Referring to Fig. 11A and Fig. 11B, a light emitting unit 5 according to a third embodiment of the present invention is shown, and Fig. 11B is a cross-sectional view of the light emitting unit 5 taken along line E-E of Fig. 11A. The light-emitting unit 5 includes a strip-shaped light-collecting body 51 and a plurality of light-emitting diode modules 52. The difference between the light-emitting unit 5 and the first embodiment is that the strip-shaped light-collecting body 51 passes through the light-emitting diode module 52 and emits light. The light-emitting diodes 522 of the diode module 52 are disposed perpendicular to the long-axis direction L1 of the strip-shaped light-collecting body 51. The shape of the circuit board 521 of each of the light-emitting diode modules 52 is, for example, a hollow ring shape, a semi-annular shape, a hollow square shape, a hollow rectangular shape or a gate shape. In the present embodiment, a hollow square is taken as an example for illustration. In addition, please refer to FIG. 12A for another variation of the light-emitting unit 5a of the third embodiment. The circuit board of the light-emitting diode module 52a (Example 12 = = road board) 521 " spirally surrounds the strip-shaped light-collecting body. The four light-emitting diodes 522 are arranged around the strip-shaped light-collecting body 5la. This can also increase the output (four) degrees of the light-emitting unit 5a. In addition, please refer to FIG. 12B, and send it to the open + monument... The first light is 5b, and the light-emitting diode module 52b is the circuit board 521b' It can also be arranged for the strip-shaped light collector & ring, 兀 'the light-emitting diode 522 is set between the γ 隹丨 _ coffee. 4 in the strip light body ... and the circuit board 1 four implementation you please Referring to FIG. 13A, the difference between the light-emitting unit of the fourth embodiment of the solar radiation and the light-emitting unit of the fourth embodiment is that the light-emitting unit 6 further includes the body 63. The material of the body 63 can be utilized with the strip-shaped light-collecting body η: the material 'is at least one of PS, Pc, Ms, PMMA or glass. The cross-section of the light-emitting body 63 can be, for example, a quadrangle or a triangle: a light shape: concave Polygon, circular or elliptical, in the present embodiment, the cross section of the same is also taken as an example of a quadrilateral. The light-emitting body 63 is connected to the strip-shaped light-collecting body 61. The light surface 612 is connected to the light emitted from the surface 612 to enter the light body 63, and the long axis direction L2 of the light body is perpendicular to the long axis direction li of the strip set (four) 61. The surface 631 of the light body 63 can be formed. - a roughened structure (e.g., surface 631 of the ejected light body 63), a dot printed structure or a microstructure such as a -microlens structure or a microlens structure to cause the face 631 to exit. The body 63 and the strip-shaped light-collecting body 61 can be connected by a member c. The connecting member C can be, for example, a triangular prism with an oblique angle, 1363159 or a reflector (not shown) for guiding. The light is emitted to the light-emitting body 63. Of course, the strip-shaped light-collecting body 61 and the light-emitting body 63 may be integrally formed in the production, and even the light-emitting body 63, the strip-shaped light-collecting body 61 and the connecting member C may be injected by The molding method is integrally formed. The function of the connector C refracts the light emitted from the strip-shaped light-collecting body 61 to cause the light to enter the light-emitting body 63. As described above, the light emitted by each of the light-emitting diodes 622 precedes the strip-shaped set. The light body 61 is mixed with light, and then emitted from the light-emitting surface 612 of the strip-shaped light-collecting body 61 into the light body 63, and The surface of the light-emitting body 63 is emitted. Thereby, the light emitted by the light-emitting diode module 62 of the light-emitting unit 6 can be uniformly mixed before the strip-shaped light-collecting body 61, so that the light-emitting body 63 can be made into a light-emitting strip. As shown in FIG. 13B, the longitudinal direction L2 of the light-emitting body 63 of the light-emitting unit 6a may be parallel to the longitudinal direction L1 of the strip-shaped light-collecting body 61, and is also connected by the connector C. The light emitted from each of the light-emitting diodes 622 is mixed in the strip-shaped light-collecting body 61, and then emitted from the light-emitting surface 612, refracted by the connecting element C, and incident on the light-emitting body 63, and then emitted through the surface of the light-emitting body 63. Referring to Fig. 13C, another variation of the light-emitting unit of the present embodiment is shown. The light emitting unit 6b further includes a reflective layer 64, at least one filter 65, at least one fluorescent conversion material 66, and at least one optical sensor 67. The reflective layer 64 is disposed at the other end of the strip-shaped light-collecting body 61 with respect to the light-emitting surface 612. The filter 65, the fluorescent conversion material 66, and the optical sensor 67 are disposed on the light-emitting surface 612 of the strip-shaped light-collecting body 61. For example, the optical sensor 67 is adjacent to the filter 65 as an example. The light distribution of the strip-shaped light-collecting body 61 can be concentrated by the arrangement of the reflective layer 64
< ：S 14 1363159 於出光面612,而濾光片65可為一多層鍍膜，用以濾掉不 想要的波長範圍的光線，使得條形集光體61出光的色彩 飽和度增加。螢光轉換材料66可為一螢光轉換層或一螢 ：' 光體膠帶，用以改變出光顏色，其中濾光片65與螢光轉 ’: 換材料66之位置可以互換。另外，設置光學感測器67則 可對該等發光二極體622的出光作回授控制，例如藉由改 變電流值，以改變發光二極體622的出光強度與顏色。 請參照圖14A至圖14C所示為以發光單元7作為一直 * 下式背光模組之光源時，條形集光體71、發光二極體模組 72及出光體73的排列方式可具有的變化。需注意者，以 下圖示中條形集光體71、發光二極體模組72及出光體73 - 之間的結構已於前述實施例的條形集光體6卜發光二極體 - 模組62及出光體63具有相同的功效及技術特徵，於此不 再贅述。如圖14A所示，複數發光單元7係以單行複數列 的方式排列，作為直下式發光模組之光源。如圖14B所示， φ 複數發光單元7係以雙行複數列的方式排列，作為直下式 發光模組之光源。如圖14C所示，複數發光單元7同樣以 雙行複數列的方式排列，但兩行之該等發光單元7係以該 … 等條形集光體71與發光二極體模組72分別位於兩側，且 " 同一列之該等條形集光體71與發光二極體模組72分別位 於出光體73上下兩側的方式排列，以作為直下式發光模 組之光源。 .請參照圖14D所示，發光單元7a可具有二出光體73, 且條形集光體71具有二出光面712，該等出光體73分別 1363159 設置並連結於條形集光體71之該等出光面712。其中，複 數發光單元7a以單行複數列的方式排列，可作為直下式發 光模組之光源。 發光單元7b亦可應用如圖14E的排列方式以作為直 下式發光模組之光源。請參照圖14E所示，發光單元7b 亦可具有二出光體73、二條形集光體71及至少二發光二 極體模組72，該等出光體73、該等條形集光體71及該等 發光二極體模組72係交錯連接成一多邊形。其中，複數 發光單元7b以單行複數列的方式排列，可作為直下式發 光模組之光源。 另外，發光單元7c亦可應用如圖14F的排列方式以 作為直下式發光模組之光源。請參照圖14F所示，發光單 元7c中之出光體73沿設於條形集光體71之長軸方向L1。 其中，複數發光單元7c以單行複數列的方式排列，作為直 下式發光模組之光源。 另外，請參照圖14G所示，發光單元7應用於直下式 發光模組時，更可包含一殼體H2，條形集光體71及發光 二極體模組72係設置於殼體H2,且出光體73之出光側上 可設置至少一擴散膜片D或至少一菱鏡膜片，於此以一擴 散膜片D為例作說明。另外，需注意者，發光二極體模組 72中的電路板721除了可以立設於條形集光體71之一側 \ 且立設於殼體H2以外，電路板721也可以平躺設置在殼 體H2上，發光單元7、7a、7b及7c中之條形集光體71 及發光二極體模組72的位置係可以互換。 16 1363159 第五實施例 請參照圖15所示為本發明第五實施例之發光單元8 的俯視圖。發光單元8與第一實施例發光單元3的主要差 異在於：發光單元8更包含一導光板88，而出光體83之 出光面係面對導光板88。其中需注意者，以下圖示中條形 集光體81、發光二極體模組82及出光體83之間的結構係 已於前述實施例中敘明，於此省略表示，以避免圖面表示 不清。 藉由導光板88的設置，條形集光體81、發光二極體 模組82及出光體83即可形成一側光式發光模組，且出光 體83出射之光線可經由導光板88更均勻地混光。另外， 為使出光更為均勻，導光板88之出光侧亦可設置至少一 擴散膜片或至少一菱鏡膜片。 請參照圖16所示，藉由複數發光單元8作排列，發 光單元8亦可應用於直下式背光模組中。請參照圖17A至 圖17C所示為發光單元8a、8b及8c的不同變化態樣。發 光單元8a、8b及8c之結構除增加一導光板88外，其他如 條形集光體8卜發光二極體模組82及出光體83之間的結 構，係利用與第四實施例之發光單元7b、7c及7d相同的 結構，於此不再贅述。另外，發光單元8a、8b及8c亦可 利用如圖16的排列方式以應用於直下式發光模組中。其 中，需注意者，發光單元8、8a、8b及8c中之條形集光體 81及發光二極體模組82的位置係可以互換。 綜上所述，因依據本發明之一種發光單元係利用一條 C S ) 17 1363159 形集光體來使複數發光二極體模組所發出的光進行混 光，並產生聚光效果，以提高發光單元的亮度。藉此，可 避免該等發光二極體間的些許波長差異所產生的影響，故 對於該等發光二極體中的晶片，可以放寬挑選的波峰波長 規格，進而降低材料成本。於實施例中，發光單元更可具 有一出光體讓均勻混光後的光線出射。藉由條形集光體與 出光體的不同排列方式，本發明之發光單元可應用於直下 式發光模組及側光式發光模組。又，本發明之發光單元更 可藉由一濾光片來提高條形集光體出光的色彩飽和度，並 藉由一光學感測器來對發光二極體的亮度與顏色作回授 檢測。< :S 14 1363159 is on the light-emitting surface 612, and the filter 65 may be a multi-layer coating for filtering out light of an undesired wavelength range, so that the color saturation of the light emitted by the strip-shaped light-collecting body 61 is increased. The fluorescent conversion material 66 can be a fluorescent conversion layer or a fluorescent material to change the color of the light, wherein the position of the filter 65 and the fluorescent material: the exchange material 66 can be interchanged. In addition, the optical sensor 67 is provided for feedback control of the light emitted from the LEDs 622, for example, by changing the current value to change the light intensity and color of the LED 622. Referring to FIG. 14A to FIG. 14C , when the light-emitting unit 7 is used as the light source of the backlight module of the present invention, the arrangement of the strip-shaped light-collecting body 71 , the light-emitting diode module 72 and the light-emitting body 73 may have Variety. It should be noted that, in the following diagram, the structure between the strip-shaped light-collecting body 71, the light-emitting diode module 72, and the light-emitting body 73- is the strip-shaped light-collecting body 6 of the foregoing embodiment, and the light-emitting diode-module 62 and the light-emitting body 63 have the same efficacy and technical features, and will not be described herein. As shown in Fig. 14A, the plurality of light-emitting units 7 are arranged in a single row and a plurality of columns as a light source of the direct-lit light-emitting module. As shown in Fig. 14B, the φ complex light-emitting unit 7 is arranged in a double-row complex array as a light source of the direct-lit light-emitting module. As shown in FIG. 14C, the plurality of light-emitting units 7 are also arranged in a plurality of rows and columns, but the two rows of the light-emitting units 7 are located in the strip-shaped light-collecting body 71 and the light-emitting diode module 72, respectively. The strip-shaped light-collecting bodies 71 and the light-emitting diode modules 72 in the same row are arranged on the upper and lower sides of the light-emitting body 73, respectively, as the light source of the direct-lit light-emitting module. As shown in FIG. 14D, the light-emitting unit 7a may have two light-emitting bodies 73, and the strip-shaped light-collecting body 71 has two light-emitting surfaces 712, and the light-emitting bodies 73 are respectively disposed 1633 and connected to the strip-shaped light-collecting body 71. Wait for the light surface 712. The plurality of light-emitting units 7a are arranged in a single row and a plurality of columns, and can be used as a light source of the direct-type light-emitting module. The light-emitting unit 7b can also be applied as shown in Fig. 14E as a light source for the direct-lit light-emitting module. As shown in FIG. 14E, the light-emitting unit 7b may further include two light-emitting bodies 73, two-shaped light-collecting bodies 71, and at least two light-emitting diode modules 72, the light-emitting bodies 73, the strip-shaped light-collecting bodies 71, and The LED modules 72 are interlaced into a polygon. The plurality of light-emitting units 7b are arranged in a single row and a plurality of columns, and can be used as a light source of the direct-type light-emitting module. In addition, the light-emitting unit 7c can also be applied as shown in Fig. 14F as a light source of the direct-lit light-emitting module. Referring to Fig. 14F, the light-emitting body 73 in the light-emitting unit 7c is disposed along the long-axis direction L1 of the strip-shaped light-collecting body 71. The plurality of light-emitting units 7c are arranged in a single row and a plurality of rows as a light source of the direct-lit light-emitting module. In addition, as shown in FIG. 14G, when the light-emitting unit 7 is applied to the direct-type light-emitting module, the housing may further include a casing H2, and the strip-shaped light-collecting body 71 and the light-emitting diode module 72 are disposed on the casing H2. At least one diffusion film D or at least one prism film may be disposed on the light-emitting side of the light-emitting body 73. Here, a diffusion film D is taken as an example for description. In addition, it should be noted that the circuit board 721 in the LED module 72 can be erected on one side of the strip-shaped light-collecting body 71 and is erected outside the casing H2, and the circuit board 721 can also be placed on a flat surface. On the casing H2, the positions of the strip-shaped light-collecting bodies 71 and the light-emitting diode modules 72 in the light-emitting units 7, 7a, 7b, and 7c are interchangeable. 16 1363159 Fifth Embodiment Referring to Figure 15, there is shown a plan view of a light-emitting unit 8 according to a fifth embodiment of the present invention. The main difference between the light-emitting unit 8 and the light-emitting unit 3 of the first embodiment is that the light-emitting unit 8 further includes a light guide plate 88, and the light-emitting surface of the light-emitting body 83 faces the light guide plate 88. It should be noted that the structure between the strip-shaped light-collecting body 81, the light-emitting diode module 82, and the light-emitting body 83 in the following drawings has been described in the foregoing embodiments, and is omitted here to avoid the representation of the surface. Unclear. By the arrangement of the light guide plate 88, the strip light collecting body 81, the light emitting diode module 82 and the light emitting body 83 can form a side light type light emitting module, and the light emitted from the light emitting body 83 can be further transmitted through the light guiding plate 88. Evenly mix light. In addition, in order to make the light out more uniform, at least one diffusion film or at least one prism film may be disposed on the light emitting side of the light guide plate 88. Referring to FIG. 16, the light-emitting unit 8 can also be applied to a direct-type backlight module by arranging the plurality of light-emitting units 8. Referring to Figures 17A through 17C, different variations of the light-emitting units 8a, 8b, and 8c are shown. The structure of the light-emitting units 8a, 8b, and 8c is the same as that of the fourth embodiment except for the addition of a light guide plate 88, such as the structure between the strip-shaped light-collecting body 8 and the light-emitting diode module 82 and the light-emitting body 83. The same structures of the light-emitting units 7b, 7c, and 7d will not be described herein. In addition, the light-emitting units 8a, 8b, and 8c can also be applied to the direct-lit light-emitting module by using the arrangement as shown in FIG. It should be noted that the positions of the strip-shaped light-collecting bodies 81 and the light-emitting diode modules 82 in the light-emitting units 8, 8a, 8b, and 8c are interchangeable. In summary, a light-emitting unit according to the present invention uses a CS) 17 1363159-shaped light collector to mix light emitted by a plurality of light-emitting diode modules and generate a light collecting effect to improve light emission. The brightness of the unit. Thereby, the influence of the difference in wavelength between the light-emitting diodes can be avoided, so that the selected peak wavelength specifications can be relaxed for the wafers in the light-emitting diodes, thereby reducing the material cost. In an embodiment, the light-emitting unit may further have a light-emitting body to allow the uniformly mixed light to exit. The light-emitting unit of the present invention can be applied to a direct-lit light-emitting module and an edge-lighted light-emitting module by different arrangement of the strip-shaped light collector and the light-emitting body. Moreover, the light-emitting unit of the present invention can improve the color saturation of the strip-shaped light-collecting body by a filter, and feedback detection of the brightness and color of the light-emitting diode by an optical sensor. .
I 以上所述僅為舉例性，而非為限制性者。任何未脫離 本發明之精神與範疇，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為習知之一種發光單元的示意圖； 圖2為習知之另一種發光單元的示意圖； 圖3為本發明第一實施例之一種發光單元的示意圖； 圖4A為本發明之發光單元的發光二極體平行於條形 集光體的長軸方向之光形分布圖，圖4B為本發明之發光 單元的發光二極體垂直於條形集光體的長軸方向之光形 分布圖； 圖5A至圖5C為本發明第一實施例之發光單元不同變 (:s) 18 1363159 化態樣示意圖； 圖6A至圖6E為本發明第一實施例之發光單元之條形 集光體其它變化態樣示意圖； 圖7A為本發明第二實施例之發光單元示意圖，圖7B 為發光單元沿圖7A中A-A直線的剖面圖； 圖8A為本發明第二實施例之發光單元一變化態樣示 意圖，圖8B為發光單元沿圖8A中B-B直線的剖面圖； 圖9A為本發明第二實施例之發光單元另一變化示意 圖，圖9B為發光單元沿圖9A中C-C直線的剖面圖； 圖10A為本發明第二實施例之發光單元又一示意圖， 圖10B為發光單元沿圖10A中D-D直線的剖面圖； 圖11A為本發明第三實施例之發光單元示意圖，圖 11B為發光單元沿圖11A中E-E直線的剖面圖； 圖12A為本發明第三實施例之發光單元另一變化態樣 示意圖，圖12B為本發明第三實施例之發光單元又一變化 態樣示意圖； 圖13A為本發明第四實施例之一種發光單元的示意 圖，圖13B及圖13C為本發明第四實施例之發光單元不同 變化態樣示意圖； 圖14A至圖14C為本發明第四實施例之發光單元應用 於直下式背光模組的不同排列方式示意圖； 圖14D至圖14G為本發明第四實施例之發光單元的變 化態樣應用於直下式背光模組的不同排列方式示意圖； 圖15為本發明第五實施例之發光單元的示意圖； 19 1363159 b圖16為本發明第五實施例之發光單元應用於直下式 背光模組的排列方式示意圖；以及 " 元的不 圖ΠΑ至圖nc為本發明第五實施例之發光單 同變化態樣示意圖。 【主要元件符號說明】 I 2、3、3a〜3h、4、4a〜4c、5、5a、5b、6、6a、6b、 • 7a〜7c、8、8a〜8c :發光單元 、 II ' 21、322、422、522、622 :發光二極體 23、63、73、83 :出光體 31、 31a 〜31f、4卜 41a 〜41c、5卜 51a、61、71、81 . 形集光體 ·條 311、 411 :端部 312、 412、412a、412c、612、712:出光面 313、 413 :入光面 φ 314 :導光結構 315、 315a :開孔 316、 416 :光轉向面 317、 317a、317b :缺口 " 418、418a〜418c :空腔 32、 42、52、52a、52b、62、72、82 :發光二極體模組 321、421、521、521a、521b、621、721 :電路板 323 :棱鏡膜片 323a :透鏡 20 1363159 631 :表面 64 :反射層 65 :遽光片 66 :螢光轉換材料 67 :光學感測器 88 :導光板 A-A、B-B、C-C、D-D、E-E :直線 C :連接件 dl :第一距離 d2 :第二距離 D :擴散膜片 HI、H2 :殼體 LI、L2 :長軸方向 21I have been described above by way of example only and not as a limitation. Any equivalent modifications or alterations to the spirit and scope of the present invention are intended to be included in the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a conventional light-emitting unit; FIG. 2 is a schematic view of another light-emitting unit according to a first embodiment; FIG. 3 is a schematic view of a light-emitting unit according to a first embodiment of the present invention; The light-emitting diode of the light-emitting unit is parallel to the light-shaped profile of the long-axis direction of the strip-shaped light-collecting body, and FIG. 4B is the light-emitting diode of the light-emitting unit of the present invention perpendicular to the long-axis direction of the strip-shaped light-collecting body. FIG. 5A to FIG. 5C are schematic diagrams showing different states of the light-emitting unit according to the first embodiment of the present invention (:s) 18 1363159; FIG. 6A to FIG. 6E are diagrams of the light-emitting unit according to the first embodiment of the present invention; FIG. 7A is a schematic view of a light emitting unit according to a second embodiment of the present invention, and FIG. 7B is a cross-sectional view of the light emitting unit taken along line AA of FIG. 7A; FIG. 8A is a second embodiment of the present invention. FIG. 8B is a cross-sectional view of the illuminating unit along the line BB in FIG. 8A; FIG. 9A is another schematic diagram of the illuminating unit according to the second embodiment of the present invention, and FIG. 9B is a line along the line CC of FIG. 9A. Sectional view 10A is a schematic view of a light emitting unit according to a second embodiment of the present invention, and FIG. 10B is a cross-sectional view of the light emitting unit taken along line DD of FIG. 10A; FIG. 11A is a schematic view of a light emitting unit according to a third embodiment of the present invention, and FIG. FIG. 12A is a cross-sectional view of a light-emitting unit according to a third embodiment of the present invention, and FIG. 12B is a schematic view showing another variation of the light-emitting unit according to the third embodiment of the present invention; FIG. 13B and FIG. 13C are schematic diagrams showing different aspects of a light-emitting unit according to a fourth embodiment of the present invention; FIG. 14A to FIG. 14C are diagrams showing a light-emitting unit according to a fourth embodiment of the present invention; FIG. 14D to FIG. 14G are schematic diagrams showing different arrangements of a light-emitting unit according to a fourth embodiment of the present invention applied to a direct-type backlight module; FIG. 15 is a schematic view of the present invention; Schematic diagram of a light-emitting unit of a fifth embodiment; 19 1363159 b FIG. 16 is a schematic diagram showing the arrangement of a light-emitting unit according to a fifth embodiment of the present invention applied to a direct-type backlight module ; And " one-fifth embodiment of the same embodiment changes a light emitting state does not comp schematic membered nc FIGS ΠΑ to the present invention. [Description of main component symbols] I 2, 3, 3a to 3h, 4, 4a to 4c, 5, 5a, 5b, 6, 6a, 6b, • 7a to 7c, 8, 8a to 8c: light-emitting unit, II ' 21 322, 422, 522, 622: light-emitting diodes 23, 63, 73, 83: light-emitting bodies 31, 31a to 31f, 4, 41a to 41c, 5, 51a, 61, 71, 81. Strips 311, 411: end portions 312, 412, 412a, 412c, 612, 712: light exiting surfaces 313, 413: light incident surface φ 314: light guiding structures 315, 315a: openings 316, 416: light turning surfaces 317, 317a 317b: notch " 418, 418a~418c: cavity 32, 42, 52, 52a, 52b, 62, 72, 82: light-emitting diode modules 321, 421, 521, 521a, 521b, 621, 721: Circuit board 323: prism film 323a: lens 20 1363159 631: surface 64: reflective layer 65: calender sheet 66: fluorescent conversion material 67: optical sensor 88: light guide plates AA, BB, CC, DD, EE: Straight line C: connector dl: first distance d2: second distance D: diffusion diaphragm HI, H2: housing LI, L2: long axis direction 21