201002999 九、發明說明： 【發明所屬之技術領域】 ' 本發明涉及一種照明裝置，尤指/種發光二極 體燈具。 【先前技術】 發光二極體作為一種高效之發光源，具有環 保、省電、壽命長等諸多特點已經被廣泛運用於各 種領域。然’發光二極體工作時會產生熱量，特別 是一些用於照明之大功率發光二極體。熱量如得不 到及時散發，易產生過熱現象，進而導致其發光效 率下降。 傳統發光二極體燈具包括一板狀散熱體、複數 安裝於該散熱體一側之發光二極體模組、將散熱體 及發光二極體模組罩設其内之一燈罩。當發光二極 體被點亮時，燈罩内溫度漸漸升高；使用一段時間 後，燈罩内聚集大量熱量。帶有該等熱量之空氣被 \ 封閉在燈罩内無法流通，而使發光二極體溫度升 高。該等熱量嚴重影響發光二極體之發光效率及使 用壽命。 【發明内容】 一種發光二極體燈具，包括複數發光二極體模 組、一供該發光二極體模組貼設之吸熱體及一第一 散熱器，該第一散熱器包括一中空筒體及由該筒體 内壁向内延伸而出之複數散熱鰭片’該吸熱體圍設 6 201002999 於該筒體之外側壁，且吸熱體之厚度沿該筒體之外 侧壁向外遞減，吸熱體之外側壁形成有貼設發光二 ‘極體模組之傾斜面。 ' 與習知技術相比，本發明之發光二極體燈具之 發光二極體模組貼設於由該中空筒體外周緣向外 延伸之吸熱體上，該吸熱體外側壁形成貼設發光二 極體模組之傾斜面。該發光二極體燈具工作時產生 熱量經吸熱體吸收再均勻地傳導至中空筒體上，最 後經散熱鰭片散發出去，從而提高發光二極體燈具 之散熱效率，進而確保燈具穩定工作。 【實施方式】 請參閱圖1至圖2，為本發明一較佳實施例之 發光二極體燈具，其包括一第一散熱器10、圍設 於該第一散熱器10外周之一吸熱體20、貼設於該 吸熱體20上之複數發光二極體模組30、一疊置於 該吸熱體20及第一散熱器10上之第二散熱器40 及罩置該發光二極體模組30之一燈罩50。 上述第一散熱器10大致呈圓筒狀，由導熱性 能良好之銅、鋁等材料一體製成。該第一散熱器 10包括一圓管狀筒體12及由該筒體12延伸出之 複數散熱鰭片14。該等散熱鰭片14由該筒體12 之内壁沿其徑向向内延伸而出，該等散熱鰭片14 關於該筒體12中心軸線均勻對稱地分佈。該等散 熱鰭片14包括相互間隔、交錯設立之複數第一散 7 201002999 熱鰭片142及複數第二散熱鰭片144。該第一散熱 鰭片142延伸長度大於該第二散熱鰭片144延伸長 ‘度。該等第一散熱鰭片142之末端圍設成一圓柱形 第一通口 16。 請一併參閱圖3，上述吸熱體20之整體外形 呈去掉尖端之正棱錐體狀，其由導熱性能良好之金 屬如銅、鋁等製成。該吸熱體20中央形成一圓形 容置口 22，該容置口 22與吸熱體20同軸且上下 貫通該吸熱體20。該容置口 22之内徑與該第一散 熱器1 0之外徑一致，以使該第一散熱器1 0剛好能 夠穿入該容置口 22並部分容置於該吸熱體20内。 該吸熱體20可以一體形成也可以由複數等份之吸 熱件24組合而成，在本實施例中，該等吸熱件24 之數量為八。該等吸熱件24關於該吸熱體20之中 心軸線呈放射狀均勻對稱地分佈，該吸熱件24之 厚度由上向下逐漸遞減以在吸熱件24之外侧形成 一傾斜之外側面（未標示）。該發光二極體模組 30對應貼設於該等吸熱件24之外侧面之上。在不 同實施例中可根據實際需要之亮度來選擇發光二 極體模組30之數量，在本實施例中，一發光二極 體模組30對應貼設於每一吸熱件24之外側面上， 且該發光二極體模組30沿吸熱件24之外侧面縱向 設置，使發光二極體模組30圍繞該吸熱體20之中 軸均勻、對稱排佈。在其他實施例中，吸熱體20 8 201002999 可與第一散熱器10之筒體12 —體形成，使第一散 熱器1 0之筒體12外侧壁形成均勻對稱之傾斜面， .該發光二極體模組3〇關於第—散熱器之軸線對 稱地分佈在傾斜面上。 上述發光二極體模組30包括一縱長矩形之電 路板32及複數均勻固定於電路板32 —側面之發光 二極體34。該等電路板32之另一側面貼合於該吸 熱體20之吸熱件24上。該等發光二極體34沿該 電路板3 2之縱長方向延伸並呈直線排列，從而將 其發光時產生熱量均勻地傳導至該吸熱體20上。 上述第二散熱器40大致呈圓盤狀，由導熱性 能良好之銅、鋁等材料一體製成。該第二散熱器 40包括一圓環形基板42、自該基板42表面延伸而 出之複數散熱片44。該基板42圍繞其中部通孔（未 標示）處垂直向上延伸出一圓管狀之管體46，忒 管體46内部具有一圓柱形第二通口 48，該第二通 口 48垂直貫通該第二散熱器4〇。該等散熱片44 由該基板42頂面垂直延伸而出，且該等散熱片44 圍繞於該管體46之外周緣並呈放射狀間隔排佈。 靠近該管體46處之散熱片44之高度高於遠離管體 46處之散熱片44之高度，使得該散熱片44整體 上呈臺階狀。該第二散熱器4〇蓋置於該吸熱體20 及穿置於該吸熱體20之容置口 22内之第一散熱器 10之上。 9 201002999 上述燈罩 50為一中空碗狀體，其通常由塑 膠、玻璃或其他透明材料製成。該燈罩5 0具有一 ’穿口 52，該穿口 52上下貫通該燈罩50。該燈罩 • 50之底部連接並圍繞於該第一散熱器10底端之外 周緣，其頂部對應連接於該第二散熱器40之基板 42底面之周緣，從而在該燈罩50與第一、第二散 熱器10、40之間圍成一封閉腔室（未標示），該 吸熱體20及貼設於該吸熱體20上之發光二極體模 組30 —併容置於其内。 請一併參閱圖4，組裝該發光二極體燈具時， 先將該吸熱體20與發光二極體模組30相組合；然 後將該第一散熱器10穿入該吸熱體20之容置口 22,其中第一散熱器10之頂面與該吸熱體20之頂 面齊平，使得該吸熱體20對應圍設該第一散熱器 1 〇之筒體1 2 ;再將該第二散熱器10焊接或粘接於 吸熱體20與第一散熱器10之上，其中第二散熱器 40之基板42之底面與該吸熱體20之頂面及第一 散熱器10之頂面一併貼合，該第一散熱器10之第 一通口 16與該第二散熱器40之第二通口 48相對 應連通；最後，將該燈罩50與該第一、第二散熱 器10、40相配合安裝，該燈罩50之底部連接並圍 繞於該第一散熱器10底端之外周緣，其頂部對應 連接於該第二散熱器40之基板42底面之周緣，從 而在該燈罩50與第一、第二散熱器10、40之間圍 10 201002999 i 成一封閉腔室（未標示） 該吸熱體20上之發光二極 内。 ’該吸熱體20及貼設於 體模組3 0 —併容置於其 本發明之#光二極體燈具Μ ^ 3〇貼設於由該中空筒體12外周緣向外延伸之吸熱 體2〇上’該吸熱體2〇外側壁形成貼設發光二極體 杈組3 0之傾斜面，該第二耑 田 歧熱器40豐置於該第一 散熱器10及吸孰體20之μ ^ ^ .、、、 夂上，該第一散熱器10中 央之第一通口 16與第二散埶 ^ 、 狀熟器40中央之第二通口 48相連通。當發光二極體 t體燈具工作時，該發光二 杈、、且3〇產生熱量被吸熱體20之每一吸埶件 24吸收，進而均句傳導至與該吸㈣⑼相連：第 一、第二散熱器10、40上，最後經散熱鰭片14及 散熱片44散發到周圍空氣中去。該第一散熱器1〇 之第一通口 16與第二散熱器4〇之第二通口銘相 連通，增強第一散熱器10之散熱鰭片14之間及第 二散熱器40之散熱片44之間之空氣對流。如此’ 可確保本發明之發光二極體燈具之散熱性能，延長 t光一極體燈具之使用壽命。另，由於供發光二極 體模組30貼設之吸熱件24圍繞第一散熱器呈 放射狀對稱排佈，使得發光二極體模組3 〇繞第一 政熱器10之中轴線沿周向排佈，所以該發光二極 體燈具照射之區域較傳統發光二極體廣闊，達到較 好照明效果。 11 201002999 综上所述，本發明符合發明專利要件，爰依法 提出專利申請。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，於爰依本發明 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係本發明之發光二極體燈具一較佳實施 例之組合立體圖。 圖2係圖1之立體分解圖。 圖3係圖2之倒置圖。 圖4係圖1之倒置圖。 【主要元件符號說明】 第一散熱器 10 散熱鰭片 14 第二散熱鰭片 144 吸熱體 20 吸熱件 24 電路板 32 第二散熱器 40 散熱片 44 管體 48 穿口 52 筒體 12 第一散熱鰭片 142 第一通口 16 容置口 22 發光二極體模組30 發光二極體 34 基板 42 第二通口 46 燈罩 5 0 12201002999 IX. Description of the invention: [Technical field to which the invention pertains] The present invention relates to a lighting device, and more particularly to a light-emitting diode lamp. [Prior Art] As a highly efficient light source, the light-emitting diode has been widely used in various fields, such as environmental protection, power saving, and long life. However, the light-emitting diode generates heat when it is working, especially some high-power light-emitting diodes for illumination. If the heat is not released in time, it will easily cause overheating, which will lead to a decrease in luminous efficiency. The conventional light-emitting diode lamp includes a plate-shaped heat sink, a plurality of light-emitting diode modules mounted on one side of the heat-dissipating body, and a light-shield cover of the heat-dissipating body and the light-emitting diode module. When the light-emitting diode is illuminated, the temperature inside the lamp cover gradually rises; after a period of use, a large amount of heat is accumulated in the lamp cover. The air with such heat is blocked by the inside of the lampshade, and the temperature of the light-emitting diode is raised. These heats seriously affect the luminous efficiency and service life of the light-emitting diode. SUMMARY OF THE INVENTION A light-emitting diode lamp includes a plurality of light-emitting diode modules, a heat sink for attaching the light-emitting diode module, and a first heat sink, the first heat sink including a hollow tube a body and a plurality of heat dissipating fins extending inwardly from the inner wall of the cylinder. The heat absorbing body encloses 6 201002999 on the outer side wall of the cylinder body, and the thickness of the heat absorbing body decreases outward along the outer side wall of the cylinder body, and absorbs heat. The outer side wall of the body is formed with an inclined surface on which the light-emitting two-pole body module is attached. Compared with the prior art, the light-emitting diode module of the light-emitting diode lamp of the present invention is attached to the heat absorbing body extending outward from the outer periphery of the hollow cylinder, and the heat-absorbing external sidewall forms an attached light-emitting diode. The inclined surface of the body module. The heat generated by the light-emitting diode lamp is absorbed by the heat-absorbing body and then uniformly transmitted to the hollow cylinder, and finally radiated through the heat-dissipating fins, thereby improving the heat-dissipating efficiency of the light-emitting diode lamp, thereby ensuring stable operation of the lamp. [Embodiment] Referring to FIG. 1 to FIG. 2, a light-emitting diode lamp according to a preferred embodiment of the present invention includes a first heat sink 10 and a heat absorbing body surrounding the outer periphery of the first heat sink 10. 20, a plurality of LED modules 30 attached to the heat absorbing body 20, a second heat sink 40 stacked on the heat absorbing body 20 and the first heat sink 10, and the light emitting diode module One of the sets 30 has a light cover 50. The first heat sink 10 has a substantially cylindrical shape and is integrally formed of a material such as copper or aluminum having good thermal conductivity. The first heat sink 10 includes a circular tubular body 12 and a plurality of fins 14 extending from the barrel 12. The fins 14 extend radially inwardly from the inner wall of the barrel 12, and the fins 14 are uniformly symmetrically distributed about the central axis of the barrel 12. The heat sink fins 14 include a plurality of first dispersions 7 201002999 hot fins 142 and a plurality of second heat dissipation fins 144 which are spaced apart from each other. The first heat dissipation fin 142 has a length greater than that of the second heat dissipation fin 144. The ends of the first heat dissipation fins 142 are surrounded by a cylindrical first opening 16. Referring to Fig. 3 together, the overall shape of the heat absorbing body 20 is a regular pyramid shape with the tip removed, and is made of a metal having good thermal conductivity such as copper or aluminum. A circular receiving port 22 is formed in the center of the heat absorbing body 20. The receiving port 22 is coaxial with the heat absorbing body 20 and penetrates the heat absorbing body 20 up and down. The inner diameter of the accommodating port 22 coincides with the outer diameter of the first heat sink 10 such that the first heat sink 10 can just penetrate the accommodating port 22 and is partially accommodated in the heat absorbing body 20. The heat absorbing body 20 may be integrally formed or may be composed of a plurality of aliquots of heat absorbing members 24. In the present embodiment, the number of the heat absorbing members 24 is eight. The heat absorbing members 24 are radially and uniformly distributed symmetrically about a central axis of the heat absorbing body 20. The thickness of the heat absorbing member 24 is gradually decreased from the top to the bottom to form an inclined outer side (not labeled) on the outer side of the heat absorbing member 24. . The LED module 30 is disposed on the outer surface of the heat sink 24 . In the different embodiments, the number of the LED modules 30 can be selected according to the actual brightness. In this embodiment, a LED module 30 is attached to the outer surface of each of the heat absorption members 24 . The LED module 30 is disposed longitudinally along the outer surface of the heat absorbing member 24, so that the LED module 30 is evenly and symmetrically arranged around the axis of the heat absorbing body 20. In other embodiments, the heat absorbing body 20 8 201002999 may be integrally formed with the barrel 12 of the first heat sink 10 such that the outer side wall of the cylindrical body 12 of the first heat sink 10 forms a uniformly symmetrical inclined surface. The pole body module 3 is symmetrically distributed on the inclined surface with respect to the axis of the first radiator. The LED module 30 includes a vertically long circuit board 32 and a plurality of LEDs 34 uniformly fixed to the side of the circuit board 32. The other side of the circuit board 32 is attached to the heat absorbing member 24 of the heat absorbing body 20. The light-emitting diodes 34 extend in the longitudinal direction of the circuit board 3 2 and are arranged in a line so as to uniformly conduct heat generated during light emission to the heat absorbing body 20. The second heat sink 40 has a substantially disk shape and is integrally formed of a material such as copper or aluminum having good thermal conductivity. The second heat sink 40 includes a circular substrate 42 and a plurality of fins 44 extending from the surface of the substrate 42. The substrate 42 extends vertically upwardly around a central through hole (not shown) to form a circular tubular body 46. The inside of the tubular body 46 has a cylindrical second opening 48, and the second opening 48 extends perpendicularly through the second The radiator 4 〇. The fins 44 extend perpendicularly from the top surface of the substrate 42 and the fins 44 are arranged around the outer periphery of the tube body 46 at a radial interval. The height of the fins 44 near the tube body 46 is higher than the height of the fins 44 away from the tube body 46, so that the fins 44 are stepped as a whole. The second heat sink 4 is disposed on the heat sink 20 and the first heat sink 10 disposed in the receiving opening 22 of the heat absorbing body 20. 9 201002999 The lampshade 50 described above is a hollow bowl which is typically made of plastic, glass or other transparent material. The lampshade 50 has a 'opening port 52' through which the lampshade 50 passes up and down. The bottom of the lamp cover 50 is connected to and surrounds the outer periphery of the bottom end of the first heat sink 10, and the top portion thereof is corresponding to the periphery of the bottom surface of the substrate 42 of the second heat sink 40, so that the lamp cover 50 and the first and the The two heat sinks 10 and 40 are enclosed by a closed chamber (not shown), and the heat absorbing body 20 and the light emitting diode module 30 attached to the heat absorbing body 20 are accommodated therein. Referring to FIG. 4 , when assembling the LED lamp, the heat absorber 20 is combined with the LED module 30; then the first heat sink 10 is inserted into the heat sink 20 . a port 22, wherein a top surface of the first heat sink 10 is flush with a top surface of the heat absorbing body 20, so that the heat absorbing body 20 corresponds to the cylindrical body 1 2 surrounding the first heat sink 1; The device 10 is soldered or bonded to the heat absorbing body 20 and the first heat sink 10, wherein the bottom surface of the substrate 42 of the second heat sink 40 is attached to the top surface of the heat absorbing body 20 and the top surface of the first heat sink 10 The first port 16 of the first heat sink 10 is in communication with the second port 48 of the second heat sink 40. Finally, the lamp cover 50 is coupled to the first and second heat sinks 10, 40. The bottom of the lamp cover 50 is connected to and surrounds the outer periphery of the bottom end of the first heat sink 10, and the top portion thereof is corresponding to the periphery of the bottom surface of the substrate 42 of the second heat sink 40, so that the lamp cover 50 and the first , the second heat sink 10, 40 between the 10 201002999 i into a closed chamber (not shown) the light-emitting diode on the heat sink 20 Inside. The heat absorbing body 20 and the light-receiving body 2 affixed to the body module 30 and accommodated in the present invention are attached to the heat absorbing body 2 extending outward from the outer periphery of the hollow cylinder 12. The outer side wall of the heat absorbing body 2 is formed with an inclined surface on which the light emitting diode group 30 is attached, and the second field heat exchanger 40 is placed on the first heat sink 10 and the sucking body 20 The first port 16 in the center of the first heat sink 10 is in communication with the second port 48 in the center of the second heat sink 40. When the light-emitting diode t-lamp works, the heat generated by the light-emitting diodes, and the heat generated by the heat-absorbing body 20 is absorbed by each of the sucking members 24 of the heat-absorbing body 20, and is evenly connected to the suction (4) (9): first, first The two heat sinks 10, 40 are finally radiated to the surrounding air via the heat dissipation fins 14 and the heat sinks 44. The first port 16 of the first heat sink 1 and the second port of the second heat sink 4 are connected to each other to enhance the heat dissipation between the heat dissipation fins 14 of the first heat sink 10 and the second heat sink 40. Air convection between the sheets 44. Thus, the heat dissipation performance of the light-emitting diode lamp of the present invention can be ensured, and the service life of the t-light one-pole lamp can be prolonged. In addition, since the heat absorbing member 24 disposed on the light emitting diode module 30 is radially symmetrically arranged around the first heat sink, the light emitting diode module 3 is wound around the axis of the first heat exchanger 10 It is arranged in the circumferential direction, so the area illuminated by the illuminating diode lamp is wider than the conventional illuminating diode, and the illumination effect is better. 11 201002999 In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be covered by the following claims. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing a combination of a preferred embodiment of a light-emitting diode lamp of the present invention. 2 is an exploded perspective view of FIG. 1. Figure 3 is an inverted view of Figure 2. Figure 4 is an inverted view of Figure 1. [Main component symbol description] First heat sink 10 Heat sink fin 14 Second heat sink fin 144 Heat sink 20 Heat sink 24 Circuit board 32 Second heat sink 40 Heat sink 44 Tube body 48 Opening 52 Tube 12 First heat sink Fin 142 first port 16 receiving port 22 light emitting diode module 30 light emitting diode 34 substrate 42 second port 46 lampshade 5 0 12