201226796 六、發明說明： [0001] 【發明所屬之技術領域】 本發明涉及一種LED照明燈具，特別涉及一種具有散熱結 構的LED照明燈具。 [0002] 【先前技#ί】 和傳統光源相比，發光二極體（LED)具有較高之發光效 率（光源溫度較一般燈泡低）、低輕射、低耗電、壽命長 、低電壓、啟動快速、環保、抗震抗壓、燈具可小型化 ❹ 等優點，以LED作為光源的照明裝置目前被廣泛應用於各 種照明，如室内照明、室外照明、可攜式照明（如手電 筒）、情境照明等應用中。LED在工作時會產生熱量，帶 有這些熱量的空氣與周圍環境中的空氣之間的流通進行 散熱，但此散熱方式效果有限，特別在LED長時間工作後 ，僅用此種散熱方式不能使產生的熱量及時疏散，使LED 溫度升高，嚴重影響LED的發光效率及LED燈具的使用壽 命。 ❹ [0003] 為了解決LED燈具的散熱問題，現有技術中多採用在燈具 殼體上增設散熱鰭片，此種方式雖然有效的增加了散熱 面積，但是會增加LED燈具的體積和重量，另外過小的鰭 片間距會引起灰塵雜質等在鰭片間隙内沉積，導致散熱 能力降低。 [0004] 【發明内容】 有鑒於此，本發明提供一種輕便且散熱良好的LED照明燈 具。 [0005] 一種LED照明燈具，包括散熱底座、LED基板、驅動電路 099146821 表單編號A0101 第3頁/共14頁 0992080509-0 201226796 [0006] [0007] [0008] [0009] 099146821 、及屯源連接器，所述LED基板上設置有多個發光二極 體所迷散熱底座一端與電源連接器連接，另一端與LED 土板相電路板收納於該散熱底座内；所述散 熱底座側壁上設有導流孔。 led.、、、明燈具L開設於散熱底座側面的導流孔使散 ·’、、底座内形成—個内流場，冷空氣從靠近電源基板的 導流孔進入，從靠近電源連接器的導流孔排出。進入散 …底座内。卩的冷空氣可以對散熱底座内側壁以及驅動電 路板進行熱交換。【實施方式】 明參考圖1，LED照明燈具1〇0包括燈罩1〇、散熱底座2〇 以及電源連接器30。燈罩1〇與電源連接器3〇分別固定在 散熱底座20的兩端。電源連接器3〇用來與電源相連接， 電源連接器3〇為通用的電源介面，如螺口電源連接器或 者卡口電源連接器。 月參閱圖2 ’ LED照明燈具ι;. 〇 〇還:::包括led基板40和驅動模 組50。所述LED基板40上還安裝有多個發光二極體41。 驅動模組50與電源連接器3〇和LED基板4〇電連接，所述 驅動模組50通過電源連接器3〇從外界獲取電能以驅動發 光二極體41發光。 燈罩10固定在散熱底座2〇上，發光二極體41發出的光線 穿過燈罩10射出到LED照明燈具1〇〇的外部。燈罩1〇可以 通過螺紋連接、卡扣、膠黏等固定方式與散熱底座2〇相 固定。在本實施方式中，燈罩10採用透明塑膠為基材， 並在其中混合適當比例的光擴散粒子，增加光散射效果 表單編號A0101 第4頁/共]4頁201226796 VI. Description of the Invention: [0001] The present invention relates to an LED lighting fixture, and more particularly to an LED lighting fixture having a heat dissipation structure. [0002] [Previous technology #ί] Compared with conventional light sources, light-emitting diodes (LEDs) have higher luminous efficiency (light source temperature is lower than general bulbs), low light, low power consumption, long life, low voltage The lighting device with LED as the light source is widely used in various lightings, such as indoor lighting, outdoor lighting, portable lighting (such as flashlight), and the situation is fast, environmentally friendly, anti-seismic and anti-vibration, and the lamps can be miniaturized. In applications such as lighting. The LED generates heat during operation, and the heat between the air with the heat and the air in the surrounding environment dissipates heat, but the heat dissipation method has limited effect, especially after the LED is used for a long time, the heat dissipation method alone cannot be used. The generated heat is evacuated in time, which causes the LED temperature to rise, which seriously affects the luminous efficiency of the LED and the service life of the LED lamp. ❹ [0003] In order to solve the problem of heat dissipation of LED lamps, in the prior art, heat-dissipating fins are added to the lamp housing. Although this method effectively increases the heat-dissipating area, it increases the volume and weight of the LED lamps, and is too small. The fin pitch causes dust impurities and the like to deposit in the fin gap, resulting in a decrease in heat dissipation capability. SUMMARY OF THE INVENTION In view of the above, the present invention provides an LED lighting fixture that is lightweight and has good heat dissipation. [0005] An LED lighting fixture, including a heat sink base, an LED substrate, a driving circuit 099146821, a form number A0101, a third page, a total of 14 pages 0992080509-0 201226796 [0006] [0007] [0008] [0009] 099146821, and a source connection The LED substrate is provided with a plurality of light-emitting diodes, and one end of the heat-dissipating base is connected to the power connector, and the other end and the LED earth-phase circuit board are received in the heat-dissipating base; Diversion hole. Led.,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, The diversion holes are discharged. Enter the base of the ... The cold air of the crucible can exchange heat between the inner side wall of the heat dissipation base and the drive circuit board. [Embodiment] Referring to FIG. 1, an LED lighting fixture 1A includes a lampshade 1A, a heat sink base 2A, and a power connector 30. The lamp cover 1〇 and the power connector 3〇 are respectively fixed to both ends of the heat dissipation base 20. The power connector 3 is used to connect to a power source, and the power connector 3 is a universal power interface such as a screw power connector or a bayonet power connector. See Figure 2 ’ LED Lighting Fixtures; 〇 〇 also::: Includes led substrate 40 and drive module 50. A plurality of light emitting diodes 41 are also mounted on the LED substrate 40. The driving module 50 is electrically connected to the power connector 3A and the LED substrate 4, and the driving module 50 obtains electric energy from the outside through the power connector 3 to drive the light-emitting diode 41 to emit light. The lamp cover 10 is fixed to the heat sink base 2, and the light emitted from the light-emitting diode 41 is emitted through the lamp cover 10 to the outside of the LED lighting device. The lamp cover 1 can be fixed to the heat sink base 2 by screwing, snapping, adhesive or the like. In the present embodiment, the lampshade 10 is made of a transparent plastic material, and a suitable proportion of light-diffusing particles is mixed therein to increase the light scattering effect. Form No. A0101 Page 4 / Total] 4 pages
0992080509-0 201226796 [0010] ο Q [0011] 099146821 並使光柔和化。在其他實施方式中，還可以在所述燈罩 10内表面設置粗糙表面來增加燈罩的光漫散射效果。 請一併結合圖3，在本實施方式中，散熱底座2〇為空心的 類圓錐體，該類圓錐體由兩個對稱的半圓錐體相對接而 成。散熱底座20包括第一端部21和第二端部22，該第一 端部21的直徑大於第二端部22的直徑。該散熱底座2〇的 第一端部21上形成有一凹部23，所述LED基板40固定在 凹部23内。在本實施方式中，LED基板40通過螺絲42固 定在凹部23内。所述第二端部22與電源連接器3〇相固定 。散熱底座20的外側面還設置有相互間隔一定距離的多 個散熱鰭片24，所述散熱鰭片24用來增加散熱底座2〇的 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。散熱底座20的側邊還設置有導流孔25，在本實 施方式中，所述散熱底座2〇包括至少一列沿徑向分佈於 散熱底座20的側邊的導流孔25，所述至少一列導流孔25 中導流孔25的數量至少為兩個。 在本實施方式中，散熱底座2〇採用導熱性佳的散熱材料 製成，如鋁合金等。優選的，所述LED基板4〇與散熱底座 20的第一端部21之間還設有導熱介質（圖未示出），用 於將LED基板40工作時散發的熱量均勻地傳導至散熱底座 20。在本實施方式中，LED基板40與散熱底座2〇的第一 端部21之間的導熱介質是導熱膠帶。 請-併結合圖2和圖4 ,驅動模組5〇收納於散熱底座2〇的 内部。所述驅動模組5〇包括驅動電路板5丨、上蓋體以 及下蓋體53，該驅動電路板51容納於上蓋體52與下蓋體 第5頁/共14頁 表單編號A0101 0992080509-0 [0012] 201226796 5 3之間。所述上蓋體5 2通過螺絲5 4鎖附於下蓋體5 3上， 該上蓋體52和下蓋體53可以對驅動電路板起到絕緣和防 水保護的作用。所述上蓋體52和下蓋體53上均設有開口 5 5，該開口 5 5供導線（圖未示出）穿出，從而允許驅動 电路板51與LED基板40以及電源連接器go電連接。 [0013] [0014] 請參考圖5 ’ LED照明燈具1〇〇工作時，發光二極體41產 生的熱量經由導熱介質傳導至散熱底座2〇的第一端部21 ，再由第一端部21傳導至散熱鰭片24。散熱鰭片24與空 氣進行熱交換，從而將熱量散發散熱。同時開設於散熱 底座20側面的導流孔25使散熱底座2〇内部形成一個内流 場，冷空氣從靠近第一端部21的導流孔25進入，從靠近 第二端部22的導流孔25排出。進入散熱底座2〇内部的冷 空氣可以對散熱底座2 0内側壁以及驅動模組5 〇進行熱交 換，有效提升散熱效率。 本技術領域的普通技術人員應當認識到，以上的實施方 式僅是用來說明本發明，而並非用作為對本發明的限定 要在本發明的實質精神範面: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園之内 [0015] [0016] [0017] [0018] 099146821 【圖式簡單說明】 圖1為本發明一實施方式中LED照明燈具的立體圖。 圖2為圖1中LED照明燈具的爆炸圖。 圖3為圖1中LED照明燈具的散熱底座的結構示意圖。 圖4為圖1中LED照明燈具的驅動模組的結構示意圖。 表單編號A0101 第6頁/共14頁 0992080509-0 201226796 [0019] 圖5為圖1中LED照明燈具的散熱方式示意圖 【主要元件符號說明】 [0020] LED照明燈具：100 [0021] 燈罩：10 [0022] 散熱底座：20 [0023] 第一端部：21 [0024] 第二端部：2 2 〇 [0025] 凹部：23 [0026] 散熱鰭片：24 [0027] 導流孔：25 [0028] 電源連接器：30 [0029] LED基板：40 [0030] 發光二極體：41 〇 [0031] 螺絲：42 [0032] 驅動模組：50 [0033] 驅動電路板：51 [0034] 上蓋體：52 [0035] 下蓋體：53 [0036] 螺絲：54 099146821 表單編號A0101 第7頁/共14頁 0992080509-00992080509-0 201226796 [0010] ο Q [0011] 099146821 and soften the light. In other embodiments, a rough surface may be provided on the inner surface of the lampshade 10 to increase the light diffusing scattering effect of the lampshade. Referring to Fig. 3 together, in the present embodiment, the heat dissipating base 2 is a hollow cone-like body which is formed by opposing two symmetrical semi-conical bodies. The heat sink base 20 includes a first end portion 21 and a second end portion 22 having a diameter greater than the diameter of the second end portion 22. A recess 23 is formed in the first end portion 21 of the heat sink base 2, and the LED substrate 40 is fixed in the recess 23. In the present embodiment, the LED substrate 40 is fixed in the recess 23 by the screw 42. The second end portion 22 is fixed to the power connector 3A. The outer surface of the heat dissipation base 20 is further provided with a plurality of heat dissipation fins 24 spaced apart from each other, and the heat dissipation fins 24 are used to increase the surface area of the heat dissipation base 2, thereby increasing the contact area with the air, thereby improving heat dissipation. effectiveness. The side of the heat dissipation base 20 is further provided with a flow guiding hole 25. In the embodiment, the heat dissipation base 2 includes at least one row of flow guiding holes 25 distributed radially on the side of the heat dissipation base 20, the at least one column. The number of the flow holes 25 in the flow guiding holes 25 is at least two. In the present embodiment, the heat dissipating base 2 is made of a heat dissipating material having a good thermal conductivity, such as an aluminum alloy. Preferably, a heat conducting medium (not shown) is disposed between the LED substrate 4 and the first end portion 21 of the heat dissipation base 20 for uniformly conducting heat emitted from the LED substrate 40 to the heat dissipation base. 20. In the present embodiment, the heat transfer medium between the LED substrate 40 and the first end portion 21 of the heat sink base 2 is a heat conductive tape. Please - in conjunction with Figures 2 and 4, the drive module 5〇 is housed inside the heat sink base 2〇. The driving module 5A includes a driving circuit board 5丨, an upper cover body and a lower cover body 53. The driving circuit board 51 is accommodated in the upper cover body 52 and the lower cover body. Page 5 of 14 Form No. A0101 0992080509-0 [ 0012] 201226796 5 3 between. The upper cover body 52 is locked to the lower cover body 53 by screws 5 4, and the upper cover body 52 and the lower cover body 53 can function as insulation and water protection for the drive circuit board. The upper cover 52 and the lower cover 53 are respectively provided with an opening 5 5 for the wire (not shown) to pass through, thereby allowing the driving circuit board 51 to be electrically connected to the LED substrate 40 and the power connector go . [0014] Please refer to FIG. 5 'When the LED lighting fixture 1 is in operation, the heat generated by the LEDs 41 is conducted to the first end portion 21 of the heat dissipation base 2 through the heat conductive medium, and then the first end portion 21 is conducted to the heat sink fins 24. The heat radiating fins 24 exchange heat with air to dissipate heat. At the same time, the flow guiding hole 25 formed on the side of the heat dissipation base 20 forms an internal flow field inside the heat dissipation base 2, and the cold air enters from the flow guiding hole 25 near the first end portion 21, and the diversion from the second end portion 22 The hole 25 is discharged. The cold air entering the inside of the heat dissipation base 2 can heat-exchange the inner side wall of the heat dissipation base 20 and the drive module 5 , to effectively improve the heat dissipation efficiency. It should be understood by those skilled in the art that the above embodiments are only intended to illustrate the invention, and are not intended to limit the invention to the spirit of the invention. Appropriate changes and variations fall within the scope of the invention as claimed. [0015] [0018] FIG. 1 is a perspective view of an LED lighting fixture in accordance with an embodiment of the present invention. 2 is an exploded view of the LED lighting fixture of FIG. 1. 3 is a schematic structural view of a heat dissipation base of the LED lighting fixture of FIG. 1. 4 is a schematic structural view of a driving module of the LED lighting fixture of FIG. 1. Form No. A0101 Page 6 of 14 0992080509-0 201226796 [0019] FIG. 5 is a schematic diagram of the heat dissipation mode of the LED lighting fixture of FIG. 1 [Key component symbol description] [0020] LED lighting fixture: 100 [0021] Lampshade: 10 [0022] Heat sink base: 20 [0023] First end: 21 [0024] Second end: 2 2 〇 [0025] Recess: 23 [0026] Heat sink fins: 24 [0027] Guide hole: 25 [ 0028] Power connector: 30 [0029] LED substrate: 40 [0030] Light-emitting diode: 41 〇 [0031] Screw: 42 [0032] Drive module: 50 [0033] Drive board: 51 [0034] Top cover Body: 52 [0035] Lower cover: 53 [0036] Screw: 54 099146821 Form No. A0101 Page 7 / Total 14 Page 0992080509-0