200928209 九、發明說明： 【發明所屬之技術領域】 本發明涉及—種具有散熱裝置之發光二極體燈具。 【先前技術】 m發光一極體光源作為一種新興之第三代光源，雖目前 ，不能大規模取代習知之白熾燈，但其具有工作壽命長、 節能、環保等優點，而普遍被市場看好。且目前由發光二 〇極體組成之模組能產生大功率、高亮度之光源，因此將廣 泛地、革命性地取代白熾燈等習知光源，進而成為符合節 能環保主題之主要光源。 然，功率、亮度越大之發光二極體或其模組產生之熱 里越大，且在體積相對較小之發光二極體燈具内難於散發 出去。故，發光二極體尚存在較大散熱技術瓶頸，此亦為 目前大功率、高亮度發光二極體燈具市場化最難突破之關 鍵。目前業界通用之散熱方案為在該燈具内設置一散熱 Φ器，透過該散熱器表面與自然對流空氣接觸之方式將熱量 散發到周圍空氣中。所以要滿足高功率、高亮度之發光二 極體燈散熱需求以使其能正常工作防止光衰，就必須提供 散熱面積很大之散熱器。如此通常會導致散熱器在燈具中 所占體積大，整體燈具體積也大，使得該種燈具結構體積 較大而難以在室内照明中推廣應用。 另外’由於發光二極體都有一定之照射角度，而發光 二極體燈具中之發光二極體通常都設置在平直之電路板 上’使燈具之照射面積有限，很多情況下都難以使用戶滿 200928209 意。同時’該有限之照射角度所獲得之照射面積又有用戶 所不需要之部分，因此如何實現發光二極體燈具特定方向 *之照明，以提高其光線之利用率，亦為目前業界所需解決 之一大課題。 【發明内容】 有#於此’有必要提供一種具有較小體積及散熱良 好’又能實現特定方向之照明之發光二極體燈具。 @ 一種發光二極體燈具，包括一燈座、與該燈座連接之 一散熱器及安裝於該散熱器上之複數發光二極體模組，該 散熱器包括·一具有中心轴線之導熱體及置於導熱體周緣之 複數散熱鰭片’該等散熱鰭片與導熱體之轴線呈一夾角。 該發光二極體燈具之散熱器結構緊湊，且具有較大散 熱面積’可在有限之體積内實現燈具之良好散熱，進而解 決高功率發光二極體燈具之發熱問題。另外該散熱器之散 熱鰭片與導熱體之轴線呈一夾角，使安裝於散熱器上之發 ❿光二極體模組發出之光線之照射角度朝一定方向偏擺，從 而滿足用戶特定方向之照明需要。 【實施方式】 請參考圖1-2’本發明發光二極體燈具包括一燈座1〇、 與該燈座10連接之一散熱器20及貼設在該散熱器2〇周緣 之三個發光二極體模組30。 燈座10包括一燈帽12、連接於該燈帽12上之一第一 蓋體14和與該第一蓋體14對扣之一第二蓋體16。該燈帽 12為一標準螺紋燈帽，適配於普通螺合式燈頭。該第一蓋 200928209 ‘體14為一由塑膠材料製成之碗狀體，其包括底端與燈帽12 ‘ 連接之一錐形連接部（未標示）和與該連接部連接之一第 • 一碗壁142。該第一碗壁142為口徑均勻之環狀體，其上端 形成一開口，該第一碗壁142在開口處之内壁周緣均勻開 設有三個安裝孔1420，用於供螺杆件.（圖未示）穿過從而 ' 與第二蓋體16螺合。該第一碗壁142上均勻開設有複數通 風孔144。 該第二蓋體16為一由塑膠或金屬材料製成之倒置碗狀 ® 體，其包括一環形結合部160和與該結合部160連接之一 第二碗壁162。該結合部160之直徑略小於燈帽12之直徑， 該結合部160之内壁上形成螺紋1600用於與散熱器20之 底部配合連接。該第二碗壁162與該結合部160連接之上 半部分之口徑由上向下逐漸增大，該第二碗壁162之上半 部分均勻開設有與發光二極體模組30之數量相對應之複數 穿孔164，該等穿孔164供連接發光二極體模組30之電源 q線組（圖未示）穿過；該第二碗壁162下半部分為口徑均 勻之環狀體，其開口大小與第一蓋體14之開口相適配，該 環狀體上均勻開設有複數通風孔166以供氣流進入第一、 二蓋體14、16形成之空間内，且該第二碗壁162在開口之 内壁周緣均勻設置有三螺孔（圖未示），該等螺孔分別與 第一蓋體14之安裝孔1420對應以與穿過該安裝孔1420之 螺杆件配合將該第一、二蓋體14、16結合在一起。該第一、 二蓋體14、16結合在一起形成之空間可用於容置該發光二 極體燈具之電子整流器（圖未示）等器件。 8 200928209 ❹ 凊同時參考圖3’散熱器2G由導熱性能良好之材料如 '、銅等金屬材料或者其合金一體製成。該散熱器2〇包括 一筒狀之導熱體22 ’該導熱體22中心有-通孔25。該導 熱體22之外壁沿其徑向向外放射狀地延伸有複數導^ 24,該等導熱臂24關於該導熱體22之中心轴線均勻對二 地分佈。每—導熱臂24具有—沿導熱體22徑向之寬度和 一石導熱體22軸向之長度，導熱臂24徑向上之寬度由導 熱體22之頂端向底端逐漸增加，即沿著導熱體22:軸線 方向由上到下逐漸增加。每—導熱臂24軸向上之長度與導 熱體22之長度相同，即導熱臂24軸向延伸貫穿整個導埶 體22之外壁。因而散熱器2〇整體呈上小下大之台體外形。、 該等導熱臂24之數量對應發光二極體模組％之數量，故 在不同實施例中可為不同之數量’而在本實施例中為對應 二個發光二極體模組3〇之三個導熱臂24。每一導熱臂24 由其兩側垂直延伸出複數對散熱鰭片240,每一對散熱鰭片 均關於對應之導熱臂24對稱，且該等散熱績片:之 長度由導熱臂24之根部向自由端方向逐漸增大。每一散熱 鰭片240都與導熱體22呈傾斜設置，因此每一散熱鰭片24: ”導熱體22之軸線之間形成一夾角。每一導熱臂μ之末 鈿均與最外侧之散熱鰭片24〇内侧表面連接，所以每一導 熱? # 24最外側之一對散熱鰭片24〇之外側表面均為一平滑 平面。該導熱體22之底端向下延設形成一呈中空管狀之連 接部28,該連接部28之外周設有螺紋，從而可與第二蓋體 16之、纟。合部160相螺合以將散熱器2〇裝設在燈座上。 9 200928209 請再參考圖2，每一發光二極體模組30包括一長條形 ’電路板32，該電路板32之形狀大小與散熱器20之最外侧 •之散熱鰭片240相當，該電路板32上並排安裝有複數發光 二極體元件34。 該發光二極體燈具在組裝時，螺杆件穿過第一蓋體14 ' 之安裝孔1420與第二蓋體16之螺孔螺合，而將第一、二 蓋體14、16結合在一起。散熱器20之底端之連接部28與 第二蓋體16上之結合部160固定連接。發光二極體模組30 ®貼設在散熱器20之每一對最外側之散熱鰭片240上。發光 二極體模組30與對應之散熱鰭片240之間可填充如導熱膠 等導熱介質，以增加它們間之導熱能力。 該發光二極體燈具在使用時，發光二極體模組30將散 發出來之熱量傳導到與其接觸之散熱鰭片240上，再進一 步均勻傳遞到整個散熱器20上。該散熱器20之導熱體22 之外壁、導熱臂24和外鰭片240直接與周圍之空氣接觸將 0熱量散發到周圍之空氣中去。而散熱器20之導熱體22内 之通孔25與第一、二蓋體14、16形成之空間連通並形成 一氣流通路，使空氣能從該第一、第二蓋體14、16之通風 孔144、166進入，再經導熱體22内與其内壁熱交換受熱， 最後經通孔25流出將熱量帶走；或者在該發光二極體燈具 與圖1所示之相反位置放置時，空氣可從導熱體22之底端 進入，經導熱體22内之通孔25，然後從該第一、第二蓋體 14、16之通風孔144、166流出將熱量帶走。該發光二極體 燈具之散熱器20結構緊湊，又具有較大之散熱面積，同時 200928209 該散熱器20内與燈座1Q形成—内循環之氣流通路能有效 地加強氣流流通及加大散熱器2G與氣流接觸之面積，從而 很好之解決該高功率發光二極體模組％之發熱問題。200928209 IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to a light-emitting diode lamp having a heat sink. [Prior Art] As a new generation of light source, the m-light source is an emerging third-generation light source. Although it can not replace the conventional incandescent lamp on a large scale, it has the advantages of long working life, energy saving and environmental protection, and is generally favored by the market. At present, the module composed of the light-emitting diodes can generate a high-power, high-brightness light source, so that a conventional light source such as an incandescent lamp is widely and revolutionarily replaced, and thus becomes a main light source that meets the theme of environmental protection and environmental protection. However, the greater the power and brightness, the greater the heat generated by the LED or its module, and it is difficult to dissipate it in a relatively small volume of a light-emitting diode lamp. Therefore, the LED has a large heat dissipation technology bottleneck, which is the key to the breakthrough of the market for high-power, high-brightness LED lamps. At present, the general heat dissipation scheme in the industry is to provide a heat sink Φ in the luminaire, and the heat is radiated into the surrounding air through the surface of the heat sink in contact with natural convection air. Therefore, in order to meet the heat dissipation requirements of high-power, high-brightness LED light to make it work properly to prevent light decay, it is necessary to provide a heat sink with a large heat dissipation area. This usually results in a large volume of the heat sink in the luminaire, and the overall luminaire is also bulky, making the luminaire structure bulky and difficult to promote in indoor lighting. In addition, since the light-emitting diodes have a certain illumination angle, and the light-emitting diodes in the light-emitting diode lamps are usually arranged on a flat circuit board, the illumination area of the lamps is limited, and it is difficult to use in many cases. Households 200928209 meaning. At the same time, the illumination area obtained by the limited illumination angle has a part that is not required by the user. Therefore, how to realize the illumination of the specific direction of the light-emitting diode lamp to improve the utilization of the light is also required for the current industry. One of the big topics. SUMMARY OF THE INVENTION It is necessary to provide a light-emitting diode lamp having a small volume and good heat dissipation, and which can realize illumination in a specific direction. An illuminating diode lamp includes a lamp holder, a heat sink connected to the lamp holder, and a plurality of light emitting diode modules mounted on the heat sink, the heat sink including a heat conduction having a central axis The body and the plurality of heat dissipating fins disposed on the periphery of the heat conductor have an angle between the heat dissipating fins and the axis of the heat conductor. The heat sink of the light-emitting diode lamp has a compact structure and a large heat dissipation area, which can achieve good heat dissipation of the lamp in a limited volume, thereby solving the heat problem of the high-power light-emitting diode lamp. In addition, the heat sink fin of the heat sink and the axis of the heat conductor form an angle, so that the illumination angle of the light emitted by the light-emitting diode module mounted on the heat sink is yawed in a certain direction, thereby satisfying the user's specific direction. Lighting needs. [Embodiment] Please refer to FIG. 1-2. The light-emitting diode lamp of the present invention includes a lamp holder 1〇, a heat sink 20 connected to the lamp holder 10, and three light emitting electrodes attached to the periphery of the heat sink 2 Diode module 30. The lamp holder 10 includes a lamp cap 12, a first cover body 14 coupled to the lamp cap 12, and a second cover body 16 opposite the first cover body 14. The lamp cap 12 is a standard threaded cap that is adapted to a conventional screw cap. The first cover 200928209 'body 14 is a bowl made of plastic material, and includes a tapered connection (not labeled) connected to the lamp cap 12' at the bottom end and one of the connections to the connection portion. A bowl of wall 142. The first bowl wall 142 is an annular body having a uniform diameter, and an opening is formed at an upper end thereof. The first bowl wall 142 is uniformly provided with three mounting holes 1420 at the periphery of the inner wall of the opening for the screw member. Passing through to 'screw with the second cover 16'. A plurality of ventilation holes 144 are evenly opened on the first bowl wall 142. The second cover 16 is an inverted bowl-shaped body made of plastic or metal material, and includes an annular joint portion 160 and a second bowl wall 162 connected to the joint portion 160. The diameter of the joint portion 160 is slightly smaller than the diameter of the lamp cap 12. The inner wall of the joint portion 160 is formed with a thread 1600 for mating connection with the bottom of the heat sink 20. The diameter of the upper portion of the second bowl wall 162 and the joint portion 160 is gradually increased from the top to the bottom, and the upper portion of the second bowl wall 162 is uniformly opened and the number of the LED modules 30 is relatively uniform. Corresponding plurality of through holes 164 for the power supply q-line group (not shown) connected to the LED module 30 to pass through; the lower half of the second bowl wall 162 is an annular body having a uniform diameter. The opening is adapted to the opening of the first cover body 14. The annular body is uniformly provided with a plurality of ventilation holes 166 for the airflow to enter the space formed by the first and second covers 14, 16 and the second bowl wall 162 is evenly disposed on the periphery of the inner wall of the opening with three screw holes (not shown) corresponding to the mounting holes 1420 of the first cover 14 to cooperate with the screw member passing through the mounting hole 1420 to The two covers 14, 16 are joined together. The space formed by the combination of the first and second covers 14, 16 can be used to accommodate devices such as an electronic rectifier (not shown) of the LED. 8 200928209 ❹ 凊 Referring to Fig. 3' at the same time, the heat sink 2G is made of a material having good thermal conductivity such as metal materials such as ', copper, or the like. The heat sink 2 includes a cylindrical heat conductor 22' having a through hole 25 in the center. The outer wall of the heat conductor 22 radially extends radially outwardly with a plurality of conductive arms 24 which are evenly distributed with respect to the central axis of the heat conductor 22. Each of the heat conducting arms 24 has a width along the radial direction of the heat conductor 22 and a length of the axial direction of the heat conductor 22, and the radial width of the heat conducting arm 24 is gradually increased from the top end to the bottom end of the heat conductor 22, that is, along the heat conductor 22. : The direction of the axis gradually increases from top to bottom. The length of each of the heat conducting arms 24 in the axial direction is the same as the length of the heat conducting body 22, that is, the heat conducting arms 24 extend axially through the outer wall of the entire guiding body 22. Therefore, the heat sink 2 is generally in the shape of a small and large body. The number of the heat conducting arms 24 corresponds to the number of the LED modules, so it can be a different number in different embodiments, and in this embodiment, the corresponding two LED modules 3 Three heat conducting arms 24. Each of the heat conducting arms 24 extends perpendicularly from opposite sides thereof to a plurality of pairs of heat dissipating fins 240. Each pair of heat dissipating fins is symmetrical about a corresponding heat conducting arm 24, and the length of the heat dissipating fins is from the root of the heat conducting arm 24 The direction of the free end gradually increases. Each of the heat dissipation fins 240 is disposed obliquely with the heat conductor 22, so that each of the heat dissipation fins 24: "an angle formed between the axes of the heat conductors 22. The end of each heat conduction arm μ and the outermost heat dissipation fins The inner surface of the sheet 24 is connected, so that the outermost surface of each of the heat conducting surfaces #24 is a smooth plane on the outer surface of the heat sink fin 24. The bottom end of the heat conductor 22 is extended downward to form a hollow tubular shape. The connecting portion 28 is provided with a thread on the outer circumference of the connecting portion 28 so as to be screwed with the yoke portion 160 of the second cover body 16 to mount the heat sink 2 在 on the socket. 9 200928209 Please refer to 2, each of the LED modules 30 includes an elongated 'circuit board 32, which is sized to correspond to the outermost fins 240 of the heat sink 20, and the board 32 is side by side. A plurality of light emitting diode elements 34 are mounted. When the light emitting diode lamp is assembled, the screw member is screwed through the mounting hole 1420 of the first cover 14' and the screw hole of the second cover body 16, and will be first. The two covers 14, 16 are joined together. The connecting portion 28 of the bottom end of the heat sink 20 and the second cover 16 The bonding portion 160 is fixedly connected. The LED module 30 is mounted on each of the outermost heat dissipation fins 240 of the heat sink 20. Between the LED module 30 and the corresponding heat dissipation fin 240 The heat-conducting medium such as a thermal conductive adhesive can be filled to increase the thermal conductivity between the light-emitting diodes. When the light-emitting diode lamp is in use, the light-emitting diode module 30 conducts the heat radiated to the heat-dissipating fins 240 in contact therewith. Further evenly distributed to the entire heat sink 20. The outer wall of the heat conductor 22 of the heat sink 20, the heat conducting arm 24 and the outer fin 240 directly contact the surrounding air to dissipate 0 heat to the surrounding air. The through hole 25 in the heat conductor 22 of the 20 is in communication with the space formed by the first and second covers 14, 16 and forms an air flow path for allowing air to pass through the ventilation holes 144 of the first and second covers 14, 16. 166 enters, and then heat exchanges with the inner wall of the heat conductor 22, and finally passes through the through hole 25 to carry away heat; or when the light emitting diode lamp is placed opposite to the position shown in FIG. 1, the air can be from the heat conductor The bottom end of 22 enters through the heat conductor 22 The through hole 25 then flows out from the vent holes 144, 166 of the first and second covers 14, 16 to carry away heat. The heat sink 20 of the light emitting diode lamp has a compact structure and a large heat dissipation area. At the same time, the heat sink 20 and the lamp holder 1Q form an inner circulation air passage to effectively enhance the airflow and increase the contact area between the radiator 2G and the airflow, thereby well solving the high power LED mode. Group% of fever problems.
因發光二極體模組3〇受一定照射角度之限制，每一發 光-極體το件34發出之光大都分佈在以發光：極體元件 34之垂線為中^線之—錐形體範圍内。本發明中之散熱器 20之散熱鰭片240與導熱體22呈傾斜設置，使貼設在最外 侧之散熱鰭片240上之發光二極體模組3〇與導熱體22之 縱長延伸方向有一定之夹角’如此發光二極體模組30之照 射角度與t直設置時相比能向水平線以上偏擺，使其朝發 光一極體燈具之頂端之照射面積增大，並可消除發光二極 體模組30豎直設置時存在於發光二極體燈具頂端之照射盲 區。該種散熱鰭片240之設置減少用戶不需要之朝向發光 一極體燈具底端之照射光線，而增多朝向發光二極體燈具 頂端之照射光線，從而能滿足用戶於該角度下之照明需Since the light-emitting diode module 3 is limited by a certain illumination angle, the light emitted by each of the light-emitting body elements 34 is distributed in a range of cones in which the vertical line of the polar body element 34 is the middle line. . The heat dissipating fins 240 of the heat sink 20 of the present invention are disposed obliquely with the heat conductor 22 so that the light emitting diode modules 3 贴 and the heat conductor 22 extending on the outermost heat radiating fins 240 extend longitudinally. There is a certain angle. The illumination angle of the LED module 30 can be yawed above the horizontal line compared with the straight setting, so that the illumination area toward the top of the illumination one-pole lamp is increased, and can be eliminated. When the LED module 30 is vertically disposed, it exists in the illumination blind area at the top of the LED lamp. The arrangement of the heat dissipating fins 240 reduces the illumination light that the user does not need to face the bottom end of the light-emitting diode lamp, and increases the illumination light toward the top end of the light-emitting diode lamp, thereby satisfying the user's lighting requirements at the angle.
要’ Φξ：兩燈具光線之利用率，使之更適合於室内照明。 綜上所述，本發明符合發明專利要件，爰依法提出專 利申请。惟’以上所述者僅為本發明之較佳實施例，舉凡 熟悉本案技藝之人士’在爰依本發明精神所作之等效修飾 或變化’皆應涵蓋於以下之申請專利範圍内。 【圖式簡單說明】 圖1為本發明發光二極體燈具之一較佳實施例之立體 組合圖。 圖2為圖1中發光二極體燈具之立體分解圖。 11 200928209 圖3為圖2中之散熱器之立體放大示意圖。 【主要元件符號說明】 燈座 10 燈帽 12 第一蓋體 14 第一碗壁 142 安裝孔 1420 通風孔 144、166 第二蓋體 16 結合部 160 螺紋 1600 第二碗壁 162 ©穿孔 164 散熱器 20 導熱體 22 導熱臂 24 散熱鰭片 240 通孔 25 連接部 28 發光二極體模組 30 電路板 32 發光二極體元件 34 ❸ 12To ' Φ ξ: the utilization of the light of the two lamps makes it more suitable for indoor lighting. In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. It is to be understood that the following description of the preferred embodiments of the present invention is intended to be BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective assembled view of a preferred embodiment of a light-emitting diode lamp of the present invention. 2 is an exploded perspective view of the light-emitting diode lamp of FIG. 1. 11 200928209 Figure 3 is a perspective enlarged view of the heat sink of Figure 2. [Main component symbol description] Lamp holder 10 Lamp cap 12 First cover body 14 First bowl wall 142 Mounting hole 1420 Ventilation hole 144, 166 Second cover body 16 Joint portion Thread 1600 Second bowl wall 162 © Perforation 164 Radiator 20 Thermal conductor 22 Thermal arm 24 Heat sink fin 240 Through hole 25 Connection part 28 Light-emitting diode module 30 Circuit board 32 Light-emitting diode element 34 ❸ 12