201200796 六、發明說明： - 【發明所屬之技術領威】 [0001] 本發明涉及-種曰光燈，特別涉及—種LED日光燈。 【先前技術】 [0002] _統光«目具有較高之發光效 率、低輕射、低=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⑽日 光燈光源的照明裝置目前被雇泛廊 光式日光燈。 用’用來替代氣體榮 〇 [0003] 0 現有的LED日光燈通常由圓柱形透明燈管以及安裝在燈管 : = =:為了提曰光燈的照射度， 發先一極體都向同一個方向照射 角度不足。也有為了増大照㈣ 射性，通常會在製作燈罩的材料中添加擴散粒= 燈罩的綠射性，此射式賴能增加光散射的效果， 但是對提升照明角丨摩的作用不明顯。 【發明内容】 闕冑鑒於此’本發明提供_種照明角度良好的LED日光燈。 _5]-種led日光燈，包括散熱基座、固定於散熱基座上的燈 099120122 罩和光源基板、安裝在散熱基座與燈罩端部的電源連接 器’所述光源基板上安裝有多個發光二極體，所述燈罩 包括第一罩體和第二罩體，第一罩體包裹在第二罩體内 ’該第一罩體採用透明材料製成，第一罩體在遠離光源 基板的表面上設置有凸起部，第二罩體的表面設置一光 表單編Sfe A01D1 第 3 頁/共 15 頁 0992035561-0 201200796 擴散層。 [0006] [0007] [0008] [0009] 發光二極體發出的光線透過第一罩體，通過凸起部的折 射作用使光線的出光角度增大，然後通過第二罩體的散 射作用，形成光照明角度較大，均勻柔和的光線。 【實施方式】 "月多考圖1，LED日光燈1〇〇包括散熱基座iq、燈罩2〇和 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3G設置在散熱基座1〇與 'a·罩2 0也成的圓管狀結構的兩個端部，電源連接器3 〇用 來與電源（未示出）建立電連接。 睛參考圖2，是圖1中的LED日光燈沿著IV-IV方向的裁面 圖。LED日光燈1〇〇還包括固定在散熱基座1〇上的光源基 板40，光源基板40與電源連接器30電連接。光源基板4〇 上叹置有發光二極體41，根據需要發光二極體41可以選 擇照射角度較大的草帽型發先二極體、較高功率發光二 極體、或者彩色的發光二極體等不同種颠。 所述政熱基座10可以選擇採用散熱性較好的銘合金基材 製造’散熱基座10底部設置有相互間隔一定距離的多個 散熱辖片11，散熱鰭片11用來增加散熱基座1〇的表面積 ’以加快空氣流通與散熱效率。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1 0之間通過高導熱性的導熱膠帶相貼合， 導熱膠帶可以更好的將光源基板40產生的熱量傳導至散 099120122 熱基座1 〇， 表單蝙號ΑΟίοι 然後通過散熱鰭片11與空氣進行熱交換。光 第 4 頁/共 15 頁 0992035561-0 201200796 [0010] ο [0011] ❹ 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 〇 散熱基座10還包括卡扣部13，卡扣部13與燈罩20邊緣的 凸邊24相扣合，將燈罩20固定在散熱基座10上。燈罩20 對應設置在光源基板40的正上方，光源基板40上的發光 二極體41發出的光透過燈罩20出射到外部。燈罩20包括 第一罩體21與第二罩體22，第一罩體21較第二罩體22更 靠近光源基板40，第一罩體21與第二罩體22間隔一定距 離且形成一空腔23。 第一罩體21採用透明材料製成，具體可以採用聚甲基丙 烯酸甲酯、聚碳酸酯、聚苯乙烯、苯乙烯-曱基丙烯酸曱 酯共聚物中的一種或者幾種的混合物。第一罩體21為圓 弧形的罩體，第一罩體21靠近光源基板40的一面為入光 面210，與入光面210相對的遠離光源基板40的一面為出 光面211。出光面211上設置有棱鏡結構的凸起部212。 所述凸起部212的尺寸隨著遠離出光面211的距離增大而 逐漸減小，該凸起部212會對從入光面210入射的光線產 生折射作用。 [0012] 請一併結合圖3，當發光二極體41發出的光線從入光面 210入射，透過第一罩體21射至凸起部212，並在凸起部 212產生折射，在本實施方式中，凸起部212對折射的光 線產生發散作用，從而增大發光二極體41的出光角度。 099120122 表單編號Α0101 第5頁/共15頁 0992035561-0 201200796 [0013] 發光二極體41發出的光線可以通過棱鏡結構的凸起部2 12 調整出光方向，使出射光朝向至設定的出光角度，從而 來調整LED日光燈100的照明角度。棱鏡結構的凸起部 212還可以在第一罩體21上不對稱的設計，使發光二極體 41發出的光線不對稱的透過第一罩體21，從而可以使LED 日光燈100—側照明角度大，另一側的照明角度較小。 [0014] 請參考圖4，為本實施例中凸起部212的兩種常用的結構 。其中，212a為鋸齒狀的凸起，212b為圓角化的鋸齒狀 的凸起。 [0015] 第二罩體22以透明材料為基材，透明材料可以採用聚曱 基丙烯酸甲酯、聚碳酸酯、聚苯乙烯、苯乙烯-甲基丙烯 酸甲酯共聚物中的一種或者幾種的混合物。第二罩體22 的表面設置有一光擴散層50。本實施方式中，光擴散層 50為塗覆在第二罩體22的外表面的光擴散塗層。當發光 二極體41發出的光線透過第一罩體21後，通過第二罩體 22上光擴散塗層的散射作用，形成均勻柔和的光線。光 擴散塗層也可以塗覆在第二罩體22的内表面。 [0016] 光擴散層50也可以採用在内表面或者外表面以膠黏的方 式貼覆光擴散薄膜以增加光散射效果並使光柔和化。 [0017] 請一併參考圖5，第一配光區域71表示本實施例中LED曰 光燈100的配光曲線，第二配光區域72表示普通LED曰光 燈的配光曲線，可以看出本實施例中LED日光燈1 0 0的照 明角度明顯大於普通LED日光燈。 [0018] 本技術領域的普通技術人員應當認識到，以上的實施方 099120122 表單編號A0101 第6頁/共15頁 0992035561-0 201200796 式僅是用來說明本發明，而並非用作為對本發明的限定 ，只要在本發明的實質精神範圍之内，對以上實施例所 作的適當改變和變化都落在本發明要求保護的範圍之内 〇 [0019] 【圖式簡單說明】 圖1為本發明一實施方式中LED日光燈的示意圖。 [0020] 圖2為圖1中的LED日光燈沿著IV-IV方向的截面圖。 [0021] 圖3為圖1中的LED日光燈沿著IV-IV方向的截面的光路示 〇 意圖。 [0022] 圖4為本發明一實施方式中凸起部212的兩種常用的結構 〇 [0023] 圖5為圖1中的LED日光燈與普通日光燈的配光曲線圖。 [0024] 【主要元件符號說明】 LED日光燈：100 [0025] 散熱基座：10 ο Γ η [0026] 散熱鰭片：11 [0027] 凹部：12 [0028] 卡扣部：1 3 [0029] 燈罩：20 [0030] 第一罩體：21 [0031] 入光面：210 099120122 表單編號A0101 第7頁/共15頁 0992035561-0 201200796 [0032] 出光面：2 11 [0033] 凸起部：212 [0034] 第二罩體：22 [0035] 空腔：23 [0036] 凸邊：24 [0037] 電源連接器：30 [0038] 光源基板：40 [0039] 發光二極體：41 [0040] 光擴散層：50 [0041] 第一配光區域：71 [0042] 第二配光區域：72 099120122 表單編號A0101 第8頁/共15頁 0992035561-0201200796 VI. Description of the Invention: - [Technical Leadership of the Invention] [0001] The present invention relates to a neon lamp, and more particularly to an LED fluorescent lamp. [Prior Art] [0002] _ Tongguang «Mesh has high luminous efficiency, low light shot, low = electricity, long life, low driving voltage, fast start-up, environmental protection, anti-seismic and anti-pressure, miniaturization of lamps (10) The lighting device of the fluorescent light source is currently employed in the Pan-light fluorescent lamp. Used to replace gas Rong [0003] 0 Existing LED fluorescent lamps are usually made of cylindrical transparent tubes and mounted on the lamp: = =: In order to improve the illumination of the lamps, the first polar body is the same The direction of the illumination is insufficient. In addition, in order to make a large photo (4) ejaculation, it is usually added to the material of the lampshade to add the diffusing grain = the greenness of the lampshade, which can increase the effect of light scattering, but the effect of improving the illumination angle is not obvious. SUMMARY OF THE INVENTION In view of the above, the present invention provides an LED fluorescent lamp having a good illumination angle. _5]-type led fluorescent lamp, including a heat sink, a lamp fixed on the heat sink base 099120122 a cover and a light source substrate, a power connector mounted on the heat sink base and the end of the lamp cover, the light source substrate is mounted with a plurality of light a diode, the lampshade includes a first cover body and a second cover body, the first cover body is wrapped in the second cover body. The first cover body is made of a transparent material, and the first cover body is away from the light source substrate. The surface is provided with a raised portion, and the surface of the second cover is provided with a diffusing layer of a light form, Sfe A01D1, Page 9 of 1592035561-0 201200796. [0009] [0009] [0009] The light emitted by the light-emitting diode passes through the first cover body, and the light-emitting angle of the light is increased by the refraction of the convex portion, and then the scattering effect of the second cover body is A light that has a large illumination angle and a uniform soft light. [Embodiment] "Multiple Tests Figure 1, LED fluorescent lamp 1〇〇 includes a heat sink base iq, a lamp cover 2〇, and a power connector 30. The lamp cover 20 is fixed to the heat sink base 10 to form a substantially elongated tubular structure. The power connector 3G is disposed at both ends of the circular base structure of the heat sink base 1 and the 'a cover 20, and the power connector 3 is used to establish an electrical connection with a power source (not shown). Referring to Figure 2, there is a plan view of the LED fluorescent lamp of Figure 1 along the IV-IV direction. The LED fluorescent lamp 1A further includes a light source substrate 40 fixed to the heat dissipation base 1b, and the light source substrate 40 is electrically connected to the power connector 30. The light-emitting substrate 4 is slanted with a light-emitting diode 41, and the light-emitting diode 41 can select a straw-type hair-emitting diode, a high-power light-emitting diode, or a colored light-emitting diode with a large irradiation angle as needed. Different kinds of body. The thermal base 10 can be selected to be made of a good alloy substrate with good heat dissipation. The bottom of the heat dissipation base 10 is provided with a plurality of heat dissipation ribs 11 spaced apart from each other by a certain distance, and the heat dissipation fins 11 are used to increase the heat dissipation base. 1 〇 surface area 'to speed up air circulation and heat dissipation efficiency. A recess 12 is formed on the heat sink base 10, and the recess 12 is disposed on the heat sink base 10 opposite to the heat sink fins 11. The light source substrate 40 is disposed in the concave portion 12, and the light source substrate 40 and the heat dissipation base 10 are adhered by a high thermal conductivity thermal conductive tape, and the thermal conductive tape can better transfer the heat generated by the light source substrate 40 to the dispersion 099120122. The hot base 1 〇, the form bat number ΑΟίοι is then heat exchanged with the air through the fins 11. Light source page 4/15 pages 0992035561-0 201200796 [0011] The source substrate 40 can also be attached to the heat sink base 10 by screws or other means, and on the light source substrate 40 and the heat sink base. A heat conducting plate is disposed between the 10s for transmitting heat generated by the light source substrate 40 to the heat sink base 10. The heat sink base 10 further includes a latching portion 13 that is engaged with the flange 24 of the edge of the lamp cover 20, The lamp cover 20 is fixed to the heat dissipation base 10. The globe 20 is disposed directly above the light source substrate 40, and the light emitted from the light-emitting diodes 41 on the light source substrate 40 is transmitted to the outside through the globe 20. The lamp cover 20 includes a first cover body 21 and a second cover body 22. The first cover body 21 is closer to the light source substrate 40 than the second cover body 22. The first cover body 21 and the second cover body 22 are spaced apart from each other and form a cavity. twenty three. The first cover 21 is made of a transparent material, and specifically, one or a mixture of polymethyl methacrylate, polycarbonate, polystyrene, styrene-mercapto acrylate copolymer may be used. The first cover 21 is a circular arc-shaped cover. The one surface of the first cover 21 close to the light source substrate 40 is the light incident surface 210, and the surface facing the light incident surface 210 away from the light source substrate 40 is the light exit surface 211. A convex portion 212 of a prism structure is disposed on the light-emitting surface 211. The size of the convex portion 212 gradually decreases as the distance from the light-emitting surface 211 increases, and the convex portion 212 refracts light incident from the light-incident surface 210. [0012] Please also refer to FIG. 3 together, when the light emitted by the light-emitting diode 41 is incident from the light-incident surface 210, is transmitted through the first cover 21 to the convex portion 212, and is refracted in the convex portion 212. In the embodiment, the convex portion 212 generates a diverging effect on the refracted light, thereby increasing the light-emitting angle of the light-emitting diode 41. 099120122 Form No. 1010101 Page 5 of 15 0992035561-0 201200796 [0013] The light emitted by the LEDs 41 can be adjusted by the convex portion 2 12 of the prism structure to direct the outgoing light toward the set light exit angle. Thereby, the illumination angle of the LED fluorescent lamp 100 is adjusted. The convex portion 212 of the prism structure can also be asymmetrically designed on the first cover body 21, so that the light emitted by the light-emitting diode 41 is asymmetrically transmitted through the first cover body 21, so that the LED fluorescent lamp 100 can be side-illuminated. Large, the other side of the lighting angle is smaller. [0014] Please refer to FIG. 4, which are two common structures of the convex portion 212 in the present embodiment. Among them, 212a is a serrated protrusion, and 212b is a rounded zigzag protrusion. [0015] The second cover 22 is made of a transparent material, and the transparent material may be one or more of polymethyl methacrylate, polycarbonate, polystyrene, styrene-methyl methacrylate copolymer. mixture. A light diffusion layer 50 is disposed on the surface of the second cover 22. In the present embodiment, the light diffusion layer 50 is a light diffusion coating applied to the outer surface of the second cover 22. When the light emitted from the light-emitting diode 41 passes through the first cover 21, the light is diffused by the light-diffusing coating on the second cover 22 to form a uniform soft light. A light diffusing coating may also be applied to the inner surface of the second cover 22. [0016] The light diffusion layer 50 may also adhere the light diffusion film to the inner surface or the outer surface in an adhesive manner to increase the light scattering effect and soften the light. [0017] Please refer to FIG. 5 together, the first light distribution area 71 represents the light distribution curve of the LED neon light 100 in the embodiment, and the second light distribution area 72 represents the light distribution curve of the ordinary LED neon light. In the present embodiment, the illumination angle of the LED fluorescent lamp 100 is significantly larger than that of the ordinary LED fluorescent lamp. [0018] Those of ordinary skill in the art will recognize that the above-described implementations of 099120122, Form No. A0101, Page 6 of 15 0992035561-0 201200796 are merely illustrative of the invention and are not intended to limit the invention. Appropriate changes and modifications of the above embodiments are within the scope of the claimed invention as long as they are within the spirit and scope of the invention. [0019] [Simplified illustration of the drawings] FIG. 1 is an embodiment of the present invention. Schematic diagram of the LED fluorescent lamp in the mode. 2 is a cross-sectional view of the LED fluorescent lamp of FIG. 1 taken along the IV-IV direction. 3 is an optical path diagram of a cross section of the LED fluorescent lamp of FIG. 1 along the IV-IV direction. [0021] FIG. 4 is a view showing two common structures of the convex portion 212 according to an embodiment of the present invention. [0023] FIG. 5 is a light distribution graph of the LED fluorescent lamp and the ordinary fluorescent lamp of FIG. [Description of main component symbols] LED fluorescent lamp: 100 [0025] Heat sink base: 10 ο Γ η [0026] Heat sink fin: 11 [0027] Recess: 12 [0028] Buckle: 1 3 [0029] Lampshade: 20 [0030] First cover: 21 [0031] Light-in surface: 210 099120122 Form number A0101 Page 7 of 15 0992035561-0 201200796 [0032] Light-emitting surface: 2 11 [0033] Raised part: 212 [0034] Second cover: 22 [0035] Cavity: 23 [0036] Bump: 24 [0037] Power connector: 30 [0038] Light source substrate: 40 [0039] Light-emitting diode: 41 [0040] ] Light diffusion layer: 50 [0041] First light distribution area: 71 [0042] Second light distribution area: 72 099120122 Form No. A0101 Page 8 of 15 0992035561-0