201226800 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明涉及一種日光燈，特別涉及一種LED日光燈。 [先前技術3 [0002] 和傳統光源相比，發光二極體（LED)具有較高之發光效 率、低輻射、低耗電、壽命長、低驅動電壓、啟動快速 、環保、抗震抗壓、燈具可小型化等優點，以LED作為曰 光燈光源的照明裝置目前被廣泛應用，用來替代氣體螢 光式曰光燈。 ❹ [0003] 現有的LED日光燈通常由圓柱形透明燈管以及安裝在燈管 内的LED光源基板組成。為了提高LED日光燈的照射度， LED光源基板上安裝多列的發光二極體（LED)，但所有的 發光二極體都向同一個方向照射，使得LED日光燈的照明 角度不足。也有為了增大照射角，採用增加燈罩的光散 射性，通常會在製作燈罩的材料中添加擴散粒子來增加 燈罩的光散射性，此種方式雖然能增加光散射的效果， Q 但是對提升照明角度的作用不明顯，在LED光源基板直射 方向仍然會存在亮點。 【發明内容】 [0004] 有鑒於此，本發明提供一種照明角度良好的LED日光燈。 [0005] 一種LED日光燈，包括基座和固定於基座上的燈罩和光源 基板、所述光源基板上安裝有多個發光二極體。所述燈 罩包括第一表面，第二表面以及入光端部，該入光端部 正對發光二極體出光方向設置，所述入光端部包括入光 端面和反射部，發光二極體發出的光線從入光端面進入 099146007 表單編號A0101 第3頁/共18頁 0992079149-0 201226800 燈罩，經反射部反射後在燈罩内部傳輸，直至從第一表 面和第二表面射出。 [0006] 發光二極體發出的光線在燈罩内部經過多次的反射和折 射再從第二表面射出到的LED曰光燈外部，在LED光源基 板直射方向不會存在亮點，LED曰光燈的光照射角增大， 均勻度增加。 【實施方式】 [0007] 請參考圖1，在本發明的第一實施方式中，LED曰光燈100 包括散熱基座10、燈罩20和電源連接器30。燈罩20固定 在散熱基座10上，形成大致為細長圓管狀結構。電源連 接器30設置在散熱基座10與燈罩20形成的圓管狀結構的 兩個端部，電源連接器30用來與外部電源（未示出）建 立電連接。 [0008] 請參考圖2，是圖1中的LED日光燈沿著IV-IV方向的截面 圖。LED日光燈100還包括固定在散熱基座10上的光源基 板40，光源基板40與電源連接器30電連接。光源基板40 上設置有發光二極體41和正向發光二極體42，根據需要 ，發光二極體41和正向發光二極體42可以選擇照射角度 較大的草帽型發光二極體、較高功率發光二極體、或者 彩色的發光二極體。 [0009] 所述散熱基座10可以選擇採用散熱性較好的鋁合金基材 製造，散熱基座10底部設置有相互間隔一定距離的多個 散熱鰭片11，散熱鰭片11用來增加散熱基座10的表面積 ，從而增加了與空氣的接觸面積，進而提高了散熱效率 。散熱基座10上還形成有一凹部12，所述凹部12與散熱 099146007 表單編號 A0101 第 4 頁/共 18 頁 0992079149-0 201226800 鰭片11相背的設置在散熱基座10上，光源基板40設置在 所述凹部12内。光源基板40與散熱基座10之間可以通過 高導熱性的導熱膠帶相貼合，導熱膠帶更好的將光源基 板40產生的熱量傳導至散熱基座10，然後通過散熱鰭片 11與空氣進行熱交換。光源基板40與也可以通過螺釘固 定或者其他方式與散熱基座10相貼合，並在光源基板40 與散熱基座10之間設置導熱板，用來將光源基板40產生 的熱量傳導至散熱基座10。 [0010] 請一併結合圖3，燈罩20為圓弧形燈罩，包括第一表面21 、第二·表面22以及入光端部24，在燈罩20的的兩個弧形 邊緣設置還設有向外延伸的伸出部23。散熱基座1〇還包 括卡扣部13，卡扣部13與燈旱20邊緣的伸出部23相扣合 ，將燈罩20固定在散熱基座10上，燈罩20與散熱基座1〇 之間形成一個腔體50。燈罩20對應設置在光源基板40的 正上方。燈罩20採用透明材料製成，具體可以採用聚曱 基丙烯酸曱酯、聚碳酸酯、聚苯乙烯、笨乙烯-甲基丙烯 酸甲酯共聚物中的一種_或者幾種的混合物。 [0011] 請參考圖4，入光端部24正對發光二極體41的出光方向設 置，所述入光端部24包括入光端面241和反射面242。該 反射面242可以是鏡面反射面或者全反射介面，在本實施 方式中，反射面242為與發光二極體41的出光方向成45度 夾角的鏡面反射面。發光二極體41發出的光線從入光端 面241進入燈罩20内部，經反射面242反射後在燈罩2〇的 第一表面21和第二表面22間反復反射。光線在燈罩20内 部的傳輸過程中，經第一表面21和第二表面22反射時， 0992079149-0 099146007 表單坞號A0101 第5頁/共18頁 201226800 一部分光線經第一表面21和第二表面22反射繼續在燈罩 20内部傳輸’ 一部分光線會發生折射射出到燈罩2〇的外 部。在第一表面21上發生折射的光線直接射出到LED曰光 k 1 0 0的外部。在第二表面2 2上發生折射的光線則進入到 腔體50中，然後再次射入燈罩2〇内，直至從第一表面21 射出至LED日光燈1〇〇的外部。 [0012] 在第一實施方式中，在第二表面22上設置有調光部25， 在本實施方式中’該調光部25為凸出於燈罩20第二表面 22上的凸起部’在其他實施方式中所述調光部25也可以 是設置於燈罩20第二表面2 2上的凹陷部。當光線在燈罩 20内部的傳輸過程中接觸到所述調光部25時，光線在調 光部25處以漫散射的形式射出到燈罩2〇外部。未接觸到 所述調光部25的光線繼續在燈罩20内部傳輸，直至在第 一表面21和第二表面22折射至燈罩20外部或者接觸到調 光部25發生漫散射射出到緣罩2〇外部。 [0013] 請參考圖5，發光二極體41發出的非五向光線從入光端面 2 41進入燈罩2 0後_ ’不經過反射面2:42的反射直接在第一 表面21和第二表面22間反復反射和折射，直至在第一表 面21和第二表面22折射至燈罩20外部或者接觸到調光部 25發生漫散射射出到燈罩20外部。 [0014] 發光二極體41發出的光線在燈罩内部經過多次的反射和 折射再從第二表面22射出到的LED日光燈1 〇 〇外部，led 日光燈100的光照射角增大，均勻度增加。 [0015] 燈罩20的第一表面21上還設置有一光擴散層（圖未示出 099146007 表單編號A0101 第6頁/共18頁 0992079149-0 201226800 )，在本實施方式中光擴散層為塗覆於第一表面21上的 光擴散塗層，在第一表面21上發生折射的光線通過該光 擴散層的散射作用，形成均勻柔和的光線。在其他實施 方式中，光擴散層也可以替換為貼附於第一表面21上的 光擴散薄膜。 [0016] ❹ 請參考圖δ，在第一實施方式中，光源基板40上非對應入 光端部24的位置還設置有正向發光二極體42。所述正向 發光二極體42發出的光線不射入入光端面241，而是直接 射入燈罩20與散熱基座1〇之間形成的腔體50内，然後穿 過燈罩20的第一表面21和第二表面22射出至led日光燈 100的外部。正向發光二極體42可以用來提升光源基板40 的正方向的光通量。 .... ..201226800 VI. Description of the Invention: [Technical Field] [0001] The present invention relates to a fluorescent lamp, and more particularly to an LED fluorescent lamp. [Prior Art 3 [0002] Compared with conventional light sources, light-emitting diodes (LEDs) have higher luminous efficiency, low radiation, low power consumption, long life, low driving voltage, fast start-up, environmental protection, shock resistance, The luminaire can be miniaturized, and the illuminating device with LED as the light source of the illuminating lamp is currently widely used to replace the gas fluorescent illuminating lamp.现有 [0003] Existing LED fluorescent lamps are generally composed of a cylindrical transparent tube and an LED light source substrate mounted in the tube. In order to increase the illumination of the LED fluorescent lamp, a plurality of rows of light-emitting diodes (LEDs) are mounted on the LED light source substrate, but all of the light-emitting diodes are illuminated in the same direction, so that the illumination angle of the LED fluorescent lamps is insufficient. In order to increase the illumination angle, the light scattering property of the lampshade is increased. Usually, diffusing particles are added to the material for fabricating the lampshade to increase the light scattering property of the lampshade. This method can increase the light scattering effect, but Q enhances the illumination. The effect of the angle is not obvious, there will still be bright spots in the direct direction of the LED light source substrate. SUMMARY OF THE INVENTION [0004] In view of the above, the present invention provides an LED fluorescent lamp with a good illumination angle. [0005] An LED fluorescent lamp includes a base and a lamp cover and a light source substrate fixed to the base, and the light source substrate is mounted with a plurality of light emitting diodes. The lamp cover includes a first surface, a second surface and an light incident end portion, the light incident end portion is disposed opposite to a light emitting direction of the light emitting diode, and the light incident end portion includes a light incident end surface and a reflecting portion, and the light emitting diode The emitted light enters the light-incident end face. 099146007 Form No. A0101 Page 3 of 18 0992079149-0 201226800 The lampshade is reflected by the reflection part and transmitted inside the lamp cover until it is emitted from the first surface and the second surface. [0006] The light emitted by the LED is reflected and refracted inside the lamp cover and then emitted from the second surface to the outside of the LED lamp, and there is no bright spot in the direct direction of the LED light source substrate. The light illumination angle increases and the uniformity increases. [Embodiment] Referring to FIG. 1, in a first embodiment of the present invention, an LED neon lamp 100 includes a heat dissipation base 10, a lamp cover 20, and a power connector 30. The lamp cover 20 is fixed to the heat dissipation base 10 to form a substantially elongated tubular structure. The power connector 30 is disposed at both ends of the circular tubular structure formed by the heat sink base 10 and the lamp cover 20, and the power connector 30 is used to establish an electrical connection with an external power source (not shown). Please refer to FIG. 2, which is a cross-sectional view of the LED fluorescent lamp of FIG. 1 taken along the IV-IV direction. The LED fluorescent lamp 100 further includes a light source substrate 40 fixed to the heat dissipation base 10, and the light source substrate 40 is electrically connected to the power connector 30. The light source substrate 40 is provided with a light emitting diode 41 and a forward light emitting diode 42. If necessary, the light emitting diode 41 and the forward light emitting diode 42 can select a straw hat type light emitting diode with a large irradiation angle, which is higher. A power LED, or a colored LED. [0009] The heat dissipation base 10 can be selected to be manufactured by using an aluminum alloy substrate with better heat dissipation. The bottom of the heat dissipation base 10 is provided with a plurality of heat dissipation fins 11 spaced apart from each other, and the heat dissipation fins 11 are used to increase heat dissipation. The surface area of the susceptor 10 increases the contact area with the air, thereby improving the heat dissipation efficiency. A recess 12 is further formed on the heat dissipation base 10, and the recess 12 is disposed on the heat dissipation base 10 opposite to the fins 11 of the heat dissipation 099146007 Form No. A0101, and the light source substrate 40 is disposed. Inside the recess 12. The light source substrate 40 and the heat dissipation base 10 can be adhered by a high thermal conductivity thermal conductive tape, and the heat conduction tape can better conduct the heat generated by the light source substrate 40 to the heat dissipation base 10, and then pass through the heat dissipation fins 11 and the air. Heat exchange. The light source substrate 40 can also be fixed to the heat dissipation base 10 by screws or other means, and a heat conduction plate is disposed between the light source substrate 40 and the heat dissipation base 10 for conducting heat generated by the light source substrate 40 to the heat dissipation base. Block 10. [0010] Referring to FIG. 3 together, the lamp cover 20 is a circular arc-shaped lamp cover, and includes a first surface 21, a second surface 22, and an light-incident end portion 24. The two curved edges of the lamp cover 20 are further provided. An outwardly extending projection 23. The heat sink base 1 further includes a latching portion 13 that is engaged with the protruding portion 23 of the edge of the lamp 20 to fix the lamp cover 20 to the heat sink base 10, and the lamp cover 20 and the heat sink base 1 A cavity 50 is formed therebetween. The globe 20 is disposed directly above the light source substrate 40. The lampshade 20 is made of a transparent material, and specifically one of methacrylate, polycarbonate, polystyrene, and stupid ethylene-methyl methacrylate copolymer may be used. Referring to FIG. 4, the light incident end portion 24 is disposed opposite to the light exiting direction of the light emitting diode 41, and the light incident end portion 24 includes a light incident end surface 241 and a reflecting surface 242. The reflecting surface 242 may be a specular reflecting surface or a total reflection interface. In the present embodiment, the reflecting surface 242 is a specular reflecting surface at an angle of 45 degrees with respect to the light emitting direction of the light emitting diode 41. The light emitted from the light-emitting diode 41 enters the inside of the globe 20 from the light incident end surface 241, is reflected by the reflecting surface 242, and is repeatedly reflected between the first surface 21 and the second surface 22 of the globe 2〇. When the light is reflected by the first surface 21 and the second surface 22 during the transmission inside the globe 20, 0992079149-0 099146007 Form Dock A0101 Page 5 / 18 pages 201226800 A portion of the light passes through the first surface 21 and the second surface 22 reflection continues to propagate inside the globe 20 'A portion of the light will refract out to the outside of the shade 2〇. Light that refracts on the first surface 21 is directly emitted outside of the LED flash k 1 0 0 . The light refracted on the second surface 22 enters the cavity 50 and is again incident into the globe 2 until it exits from the first surface 21 to the outside of the LED fluorescent lamp. [0012] In the first embodiment, the second surface 22 is provided with a light adjustment portion 25, which in the present embodiment 'the light adjustment portion 25 is a convex portion protruding from the second surface 22 of the globe 20' In other embodiments, the light control portion 25 may be a recess portion provided on the second surface 22 of the globe 20. When the light is in contact with the dimming portion 25 during the transmission inside the globe 20, the light is emitted to the outside of the globe 2 at the dimming portion 25 in the form of diffuse scattering. The light that is not in contact with the dimming portion 25 continues to be transmitted inside the globe 20 until the first surface 21 and the second surface 22 are refracted to the outside of the globe 20 or contact the dimming portion 25 to diffusely scatter to the edge cover 2 external. [0013] Referring to FIG. 5, the non-five light emitted from the LEDs 41 enters the lamp cover 20 from the light incident end face 22, and the reflection from the reflective surface 2: 42 is directly on the first surface 21 and the second surface. The surface 22 is repeatedly reflected and refracted until the first surface 21 and the second surface 22 are refracted to the outside of the globe 20 or contact the dimming portion 25 to diffusely scatter out to the outside of the globe 20. [0014] The light emitted by the light-emitting diode 41 is reflected and refracted inside the lampshade and then emitted from the second surface 22 to the outside of the LED fluorescent lamp 1 , and the light irradiation angle of the LED fluorescent lamp 100 is increased, and the uniformity is increased. . [0015] The first surface 21 of the lamp cover 20 is further provided with a light diffusion layer (not shown in FIG. 099146007, Form No. A0101, page 6 / 18 pages, 0992079149-0 201226800). In the present embodiment, the light diffusion layer is coated. The light diffusing coating on the first surface 21, the light refracted on the first surface 21 passes through the scattering of the light diffusing layer to form a uniform soft light. In other embodiments, the light diffusing layer may be replaced with a light diffusing film attached to the first surface 21. ❹ Referring to FIG. δ, in the first embodiment, a forward light-emitting diode 42 is further disposed on the light source substrate 40 at a position that does not correspond to the light-incident end portion 24. The light emitted by the forward light emitting diode 42 does not enter the light incident end surface 241, but is directly incident into the cavity 50 formed between the lamp cover 20 and the heat dissipation base 1 , and then passes through the first cover of the lamp cover 20 . The surface 21 and the second surface 22 are emitted to the outside of the led fluorescent lamp 100. The forward light emitting diode 42 can be used to enhance the luminous flux in the positive direction of the light source substrate 40. .... ..
[0017] Ο 請參考靠圖7，在第二實施方式中’ LED日光燈120的結構 和光路與第一實施方式相似。散熱基座1〇2與燈罩220之 間採用卡扣卡合連接，發考二極體421橡有側向發光型。 燈罩220包括一入光端部224 ’該入光端部224正對發光 二極體421的出光方向設置’所述入光端部204包括入光 端面2241和反射面2242。。在本實施方式中，反射面 2242。為與發光二極體421的出光方向成45度夾角的鑛 有高反射薄膜的反射面，光線經反射面2242。反射後在 燈罩220的第一表面221和第二表面222間反復反射從而 在燈罩220的内部傳輸。 [0018] 099146007 本技術領域的普通技術人員應當認識到，以上的實施方 式僅疋用來說明本發明，而並非用作為對本發明的限定 八要在本發明的實質精神範固之内，對以上實施例所 表單編號AOloj 第7頁/共18頁 0992079149-0 201226800 作的適當改變和變化都落在本發明要求保護的範圍之内 0 【圖式簡單說明】 [0019] 圖1為本發明一實施方式中LED曰光燈的示意圖。 [0020] 圖2為圖1中的LED曰光燈沿著IV-IV方向的截面圖。 [0021] 圖3為圖1中的LED曰光燈中燈罩的截面示意圖。 [0022] 圖4為圖1中的LED日光燈中發光二極體正向光線沿著I V-IV方向的截面的光路示意圖。 [0023] 圖5為圖1中的LED曰光燈中發光二極體非正向光線沿著 IV-IV方向的戴面的光路示意圖。 [0024] 圖6為圖1中的LED日光燈中正向發光二極體光線沿著IV-IV方向的截面的光路示意圖。 [0025] 圖7為本發明第二實施方式中LED曰光燈的示意圖。 【主要元件符號說明】 [0026] LED 日光燈：100、120 [0027] 散熱基座：10、102 [0028] 散熱鰭片：11 [0029] 凹部：12 [0030] 卡扣部：13 [0031] 燈罩：20、220 [0032] 第一表面：21、2 2 1 099146007 表單編號A0101 第8頁/共18頁 0992079149-0 201226800 [0033] 第二表面：22、2022 [0034] 伸出部：23 [0035] 入光端部：24、224 [0036] 入光端面：241、2241 [0037] 反射面：242、2242 [0038] 調光部：25 [0039] Ο 電源連接器：30 [0040] 光源基板：40 [0041] 發光二極體：41、421 [0042] 正向發光二極體：42 [0043] 腔體：50 099146007 表單編號Α0101 第9頁/共18頁 0992079149-0[0017] Referring to FIG. 7, the structure and optical path of the 'LED fluorescent lamp 120' in the second embodiment are similar to those of the first embodiment. The heat dissipation base 1〇2 and the lamp cover 220 are connected by a snap fit, and the test pole 421 rubber has a lateral illumination type. The lamp cover 220 includes an light incident end portion 224' which is disposed opposite to the light exiting direction of the light emitting diode 421. The light incident end portion 204 includes a light incident end surface 2241 and a reflecting surface 2242. . In the present embodiment, the reflecting surface 2242 is provided. The reflecting surface having a highly reflective film at an angle of 45 degrees with respect to the light-emitting direction of the light-emitting diode 421 passes through the reflecting surface 2242. After reflection, it is repeatedly reflected between the first surface 221 and the second surface 222 of the globe 220 to be transmitted inside the globe 220. [0018] Those skilled in the art should understand that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention within the spirit of the present invention. The embodiment number AOloj page 7 / 18 pages 0992079149-0 201226800 The appropriate changes and changes are within the scope of the claimed invention. [Simplified illustration] [0019] FIG. A schematic diagram of an LED neon lamp in an embodiment. 2 is a cross-sectional view of the LED downlight of FIG. 1 taken along the IV-IV direction. 3 is a schematic cross-sectional view of a lampshade in the LED neon lamp of FIG. 1. 4 is a schematic diagram of an optical path of a cross section of a light-emitting diode forward light along the I V-IV direction in the LED fluorescent lamp of FIG. 1. 5 is a schematic diagram of an optical path of a non-positive light of a light-emitting diode along the IV-IV direction in the LED neon lamp of FIG. 1. 6 is a schematic diagram of an optical path of a cross section of the forward light emitting diode light along the IV-IV direction in the LED fluorescent lamp of FIG. 1. 7 is a schematic view of an LED neon lamp in a second embodiment of the present invention. [Main component symbol description] [0026] LED fluorescent lamp: 100, 120 [0027] Heat sink base: 10, 102 [0028] Heat sink fin: 11 [0029] Recess: 12 [0030] Buckle: 13 [0031] Lampshade: 20, 220 [0032] First surface: 21, 2 2 1 099146007 Form number A0101 Page 8 / Total 18 pages 0992079149-0 201226800 [0033] Second surface: 22, 2022 [0034] Extension: 23 [0035] Light-input end: 24, 224 [0036] Light-incident end face: 241, 2241 [0037] Reflecting surface: 242, 2242 [0038] Dimming section: 25 [0039] Ο Power connector: 30 [0040] Light source substrate: 40 [0041] Light-emitting diode: 41, 421 [0042] Positive light-emitting diode: 42 [0043] Cavity: 50 099146007 Form number Α 0101 Page 9 / Total 18 page 0992079149-0