1360622 100年.11.月· 30日核正替換頁 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明涉及一種發光二極體嵌燈，特別係指一種具有散 熱裝置之發光二極體嵌燈。， 【先前技術】 [0002] 相比於傳統之發光源，發光二極體具有重量輕、體積小 、污染低、壽命長等優點，其作為一種新型之發光源， 已經被越來越多地應用到各領域當中，如路燈、交通燈 、信號燈、射燈及裝飾燈等等。 [0003] 在室内照明中，某些燈具被設計成嵌入於牆壁或天花板 内，以此獲得較佳之整體視覺效果，該等燈具被業界統 稱為嵌燈。傳統之嵌·燈一般包括一圓筒狀之殼體、一容 置於殼體内之發光二極體模組、一固定至殼體上之罩體 及二樞接於罩體相對兩側之彈性臂。所述罩體包括一套 設於殼體上之壁部及一形成於壁部頂端之簷部。所述罩 體之壁部穿入牆壁或天花板之孔洞内且藉由其簷部抵靠 於牆壁或天花板之外側。所述彈性臂抵壓於牆壁或天花 板之内側，以將嵌燈固定在牆壁或天花板内。 [0004] 所述發光二極體模組包括一電路板及複數安裝在該電路 板上之發光二極體。由於發光二極體工作時會產生大量 之熱量，為使該等熱量可及時地得到散發，需在殼體下 部加裝一散熱器。通常之嵌燈用散熱器包括一與發光二 極體模組之電路板底部接觸之導熱柱及複數自該導熱柱 側面向外輻射之鰭片。發光二極體所產生之熱量藉由導’ 熱柱傳導至鰭片上，然後再經由鰭片對流至周圍之空氣 096151098 表單編號A0101 第3頁/共14頁 1003444110-0 1360622 100年11·月·30日核正替換頁 [0005] [0006] [0007] 096151098 當中。 由於鰭片形成於導熱柱之側面，其高度與導熱柱之高度 相同。為使鰭片具有充足之散熱面積，如增加鰭片之高 度則導熱柱亦需相應地增高。另一方面，為使所有之發 光二極體所產生之熱量均可經由最短之路徑傳輸至導熱 柱上，導熱柱需充分與電路板接觸，即該導熱柱之頂面 積至少需等於發光二極體模組之電路板之面積。如若發 光二極體模組較大，為確保充足之導熱面積，導熱柱之 頂面積亦須相應地增大。惟，在導熱柱具有相當高度之 基礎上增大其頂面積將會導致導熱柱之體積急劇增大， 致使散熱器之重量大幅度增加，給發光二極體嵌燈之運 輸及安裝造成不便。 【發明内容】 有鑒於此，實有必要提供一種運輸及安裝均較為便利之 發光二極體嵌燈。 一種發光二極體嵌燈，其包括一殼體、一容置於殼體内 之發光二極體模組、一固定至殼體底部之散熱器、一環 繞安裝於殼體上之罩體及二樞接於罩體相對兩側之二彈 性臂，散熱器包括一頂面與發光二極體模組接觸之基座 及複數形成於基座底部之鰭片，該散熱器還包括一連接 基座及鰭片之板體，該等鰭片自板體底面向下延伸，該 板體沿水平方向延伸超出殼體之週緣而暴露在殼體輪廓 外部。 與習知技術相比，本發明之發光二極體嵌燈之散熱器藉 由一基座與發光二極體模組接觸，其鰭片自基座之底面 表單編號Α0101 第4頁/共14頁 1003444110-0 [0008] 1360622 100年11月.30日核正替&頁 向下延伸而出，不需要佔據基座之側面，使基座不致太 高，進而不會大幅度地增加基座之體積，從而使散熱器 之重量得到控制。由此，發光二極體嵌燈之運輸及安裝 之便利性得到保障。 【實施方式】 [0009] 如圖1-2所示，本發明之發光二極體嵌燈用於嵌入天花板 或牆壁（圖未示）之孔洞内而對天花板或牆壁之外部照 明。該發光二極體嵌燈包括一殼體10、一容置於殼體10 内之發光二極體模組20、一固定至殼體10上之罩體40、 二分別樞接於罩體40相對兩側之彈性臂50及一安裝於殼 體10底部之散熱器30。發光二極體模組20包括一圓形之 電路板24及複數均勻分佈於電路板24上之發光二極體22 〇 [0010] 所述殼體10為一中空之圓柱體，其頂面向下凹陷出一腔 室（圖未標）。該腔室呈内徑自上至下逐漸減小之圓臺 狀，其底面均勻地開設三凹部12，用於容置所述發光二 極體模組20之發光二極體22。每一凹部12之内徑亦自上 至下逐漸減小，其側壁面形成一反射面，用於反射發光 二極體22所產生之光線。殼體10之外周面上之相對兩側 分別向外凸伸出二矩形之凸耳14，其中每一凸耳14之頂 部低於殼體10之頂部，其底部與殼體10之底部齊平。每 一凸耳14之上部均開設一水平朝向之螺孔（圖未標）， 供螺絲60螺合。 [0011] 所述發光二極體模組20收容於殼體10内，其發光二極體 22分別嵌入殼體10之凹部12内。當該等發光二極體22通 096151098 表單编號A0101 第5頁/共14頁 1003444110-0 1360622 __ 100年11月.30日按正替換頁 電之後，其所發出之部分光線可被凹部12之發射面所反 射而分別會聚至相應之光柱内，進而輻射出較大之光強 〇 [0012] 請一併參閱圖3，所述散熱器30安裝於殼體10之底部，其 由熱導性良好之金屬材料一體形成。該散熱器30包括一 基座32、一結合至基座32底部之方形板體34及複數自板 體34底面垂直向下延伸之鰭片36。基座32收容於殼體10 之下部，其頂面與發光二極體模組20之電路板24之底面 接觸以吸收發光二極體22所產生之熱量。該基座32具有 二相互平行之側壁面及二連接該二平行之側壁面之另外 二向外凸出之圓弧形側壁面，其中每一圓弧形側壁面兩 端之間距小於平行之侧壁面之長度。每一圓弧形之側壁 面上沿水平方向形成複數螺紋320，其與殼體10内之螺紋 相螺合以將基座32螺鎖於殼體10内。板體34位於殼體10 之下方並延伸超出殼體10之週緣，其厚度小於基座32之 厚度。該板體34之面積大於基座32之面積，用於將基座 32所吸收之熱量均勻地傳導至鰭片36上，其中該板體34 之長度等於基座32之二圓弧形之側壁面之最外端之間距 ，其寬度大於基座32之二平行之側壁面之間距。鰭片36 佔據所述板體34之整個底面，每二相鄰之鰭片36相互平 行且彼此隔開，以形成複數氣流通道。 [0013] 請再參閱圖1及圖2，所述罩體40環繞安裝於所述殼體10 上，其包括一環形之壁部42及一自該壁部42頂端水平向 外延伸之簷部44。二相對之卡槽420開設於壁部42之下部 且與二凸耳14相互對應，其中每一卡槽420均呈“T”形 096151098 表單编號A0101 第6頁/共14頁 1003444110-0 1360622 100年.11月·30日修正_頁 ，其下部豎直貫穿壁部42之底端，其上部則水平設置且 其長度大於下部之高度。該二卡槽420用於卡設彈性臂50 而使其樞接於罩體40上。壁部42在靠近二卡槽420之上方 之位置處分別開設二水平之穿孔（圖未標），該二穿孔 與所述凸耳14之螺孔對齊，供螺絲60插設。簷部44之外 緣呈波浪形，其用於抵靠於天花板或牆壁之外側而對發 光二極體嵌燈限位。 [0014] 所述彈性臂50分別卡設於所述二卡槽420内。每一彈性臂 50均由一彈性之金屬線一體彎折而成，其包括一螺旋部 52及一自該螺旋部52向上形成之抵壓部54，該抵壓部54 相對於殼體10之壁部42向兩側傾斜設置。螺旋部52卡設 於所述罩體40之卡槽420内而將彈性臂50樞接於罩體40 上。抵壓部54用於彈性抵壓於天花板或牆壁之内側而與 罩體40之簷部44共同將發光二極體嵌燈固定。 [0015] 安裝該發光二極體嵌燈時，首先將二彈性臂50之螺旋部 52分別卡設至罩體40之二卡槽420内；再將罩體40套置 於所述殼體10上，使其穿孔與凸耳14之螺孔對齊；之後 ，從發光二極體嵌燈外部將螺絲60穿過罩體40之壁部42 ，向内旋轉螺絲60而使其螺鎖於殼體10上；隨後，旋轉 彈性臂50使其貼置於散熱器30之側面而處於豎直位置， 再將該狀態下之發光二極體嵌燈倒置後自下至上置入天 花板或牆壁之孔洞内，使其罩體40之簷部44抵靠天花板 或牆壁之外側；然後，朝罩體40之方向旋轉二彈性臂50 ，使其向外抵壓於天花板或牆壁之内側。由此，完成了 發光二極體嵌燈之安裝過程。 096151098 表單編號A0101 第7頁/共14頁 1003444110-0 1360622 _ 100年11月· 30日梭正替換百 [0016] 拆卸發光二極體嵌燈時，只需反向操作上述流程即可。 [0017] 與習知技術相比，本發明之發光二極體嵌燈之散熱器30 之鰭片36藉由板體34連接至基座32下方，其不需佔據基 座3 2之側面，可使基座3 2之厚度控制在一較小之範圍内 。由此，即使因發光二極體模組30面積擴大之需求而增 大基座32之面積，其亦不會如傳統之發光二極體嵌燈之 散熱器一般大幅度地增加基座32之體積，從而使散熱器 30之整體重量得到很好地控制，方便發光二極體嵌燈之 運輸及安裝。 [0018] 可以理解地，在對散熱要求不高之場合下，本發明之散 熱器30還可省去板體34，使鰭片36直接自基座32下方延 伸而出，從而節省發光二極體嵌燈之整體成本。 [0019] 綜上所述，本發明確已符合發明專利之要件，遂依法提 出專利申請。惟，以上所述者僅為本發明之較佳實施例 ，自不能以此限制本案之申請專利範圍。舉凡熟悉本案 技藝之人士援依本發明之精神所作之等效修飾或變化， 皆應涵蓋於以下申請專利範圍内。 【圖式簡單說明】 [0020] 圖1係本發明實施例之發光二極體嵌燈之組裝圖。 [0021] 圖2係圖1之分解圖。 [0022] 圖3係圖1之縱向截面圖，此時發光二極體嵌燈被倒置。 【主要元件符號說明】 [0023] 殼體：10 096151098 表單编號A0101 第8頁/共14頁 1003444110-0 1360622 [0024] 凹部：12 [0025] 凸耳：14 [0026] 發光二極體模組：20 [0027] 發光二極體：22 [0028] 電路板：24 [0029] 散熱器：30 [0030] 基座：32 [0031] 螺紋：320 [0032] 板體：34 [0033] 鰭片：36 [0034] 罩體：40 [0035] 壁部：42 [0036] 卡槽：420 [0037] 簷部：44 [0038] 彈性臂：50 [0039] 螺旋部：52 [0040] 抵壓部：54 [0041] 螺絲：60 096151098 表單编號A0101 第9頁/共14頁 100年.11月30日修正替換頁 1003444110-01360622 100 years.11.月·30日核正换页6, invention description: [Technical field of invention] [0001] The present invention relates to a light-emitting diode downlight, in particular to a light-emitting device having a heat sink Polar body recessed light. [Prior Art] [0002] Compared with the conventional light source, the light-emitting diode has the advantages of light weight, small volume, low pollution, long life, etc., and as a new type of light source, it has been increasingly Applied to various fields, such as street lights, traffic lights, signal lights, spotlights and decorative lights. [0003] In interior lighting, certain luminaires are designed to be embedded in a wall or ceiling to achieve a better overall visual effect, and such luminaires are collectively referred to in the industry as recessed lights. The conventional embedded lamp generally includes a cylindrical casing, a light-emitting diode module housed in the casing, a cover fixed to the casing, and two elastic members pivotally connected to opposite sides of the cover. arm. The cover body includes a wall portion disposed on the casing and a crotch portion formed at a top end of the wall portion. The wall portion of the cover penetrates into a hole in a wall or ceiling and abuts against the outer side of the wall or ceiling by its crotch portion. The resilient arms abut against the inside of the wall or ceiling to secure the downlight to the wall or ceiling. [0004] The light emitting diode module includes a circuit board and a plurality of light emitting diodes mounted on the circuit board. Since the light-emitting diode generates a large amount of heat during operation, in order to allow the heat to be dissipated in time, a heat sink is attached to the lower portion of the casing. A conventional heat sink for a recessed light includes a heat conducting column that is in contact with the bottom of the circuit board of the light emitting diode module and a plurality of fins radiating outward from the side of the heat conducting column. The heat generated by the light-emitting diode is conducted to the fin by the conductive column, and then convected to the surrounding air via the fin. 096151098 Form No. A0101 Page 3 of 14 1003444110-0 1360622 100 years 11·month· The 30th nuclear replacement page [0005] [0006] [0007] 096151098. Since the fin is formed on the side of the heat conducting column, its height is the same as the height of the heat conducting column. In order to make the fins have a sufficient heat dissipation area, such as increasing the height of the fins, the heat-conducting column also needs to be correspondingly increased. On the other hand, in order to allow all the heat generated by the light-emitting diodes to be transmitted to the heat-conducting column via the shortest path, the heat-conducting column needs to be sufficiently in contact with the circuit board, that is, the top area of the heat-conducting column must be at least equal to the light-emitting diode The area of the circuit board of the body module. If the light-emitting diode module is large, the top area of the heat-conducting column must be increased accordingly to ensure a sufficient heat-conducting area. However, increasing the top surface area based on the height of the heat conducting column will cause the volume of the heat conducting column to increase sharply, resulting in a substantial increase in the weight of the heat sink, which is inconvenient for the transportation and installation of the light-emitting diode downlight. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a light-emitting diode downlight that is convenient for transportation and installation. A light-emitting diode downlight includes a casing, a light-emitting diode module housed in the casing, a heat sink fixed to the bottom of the casing, and a cover surrounding the casing and The two elastic arms are pivotally connected to opposite sides of the cover body, and the heat sink comprises a base having a top surface in contact with the LED module and a plurality of fins formed on the bottom of the base, the heat sink further comprising a connecting base a plate of fins and fins extending downward from a bottom surface of the plate body, the plate body extending horizontally beyond the periphery of the housing to be exposed outside the contour of the housing. Compared with the prior art, the heat sink of the light-emitting diode downlight of the present invention is in contact with the light-emitting diode module by a pedestal, and the fins are numbered from the bottom surface of the base. Α0101 Page 4 of 14 Page 1003444110-0 [0008] 1360622 On November 30th, 30th, the nuclear positive & page extends downwards, does not need to occupy the side of the base, so that the base is not too high, and thus does not significantly increase the base The volume of the seat, so that the weight of the radiator is controlled. Thereby, the convenience of transportation and installation of the light-emitting diode downlight is ensured. [Embodiment] As shown in Fig. 1-2, the light-emitting diode downlight of the present invention is used for embedding in a hole in a ceiling or a wall (not shown) to illuminate the outside of a ceiling or a wall. The LED body lamp includes a housing 10, a light-emitting diode module 20 housed in the housing 10, a cover 40 fixed to the housing 10, and two pivotally connected to the cover 40 respectively. The elastic arms 50 on opposite sides and a heat sink 30 mounted on the bottom of the casing 10. The LED module 20 includes a circular circuit board 24 and a plurality of LEDs 22 uniformly distributed on the circuit board 24. [0010] The housing 10 is a hollow cylinder with a top surface facing downward. A chamber is recessed (not shown). The chamber has a truncated cone shape whose inner diameter gradually decreases from the top to the bottom, and the bottom surface of the chamber is uniformly provided with three recesses 12 for accommodating the LEDs 22 of the LED module 20. The inner diameter of each recess 12 also gradually decreases from top to bottom, and the side wall surface forms a reflecting surface for reflecting the light generated by the light-emitting diode 22. The opposite sides of the outer circumferential surface of the casing 10 respectively protrude outwardly from the two rectangular lugs 14, wherein the top of each lug 14 is lower than the top of the casing 10, and the bottom thereof is flush with the bottom of the casing 10. . A screw hole (not shown) is formed in the upper portion of each of the lugs 14 for screwing. [0011] The LED module 20 is housed in the housing 10, and the LEDs 22 are respectively embedded in the recesses 12 of the housing 10. When the light-emitting diodes 22 pass 096151098 Form No. A0101 Page 5 / Total 14 pages 1003444110-0 1360622 __ November 30, 30, after the replacement of the page power, part of the light emitted by it can be recessed 12 The emitting surface is reflected and concentrated into the corresponding light column, thereby radiating a large light intensity. [0012] Referring to FIG. 3 together, the heat sink 30 is mounted on the bottom of the casing 10, and is thermally guided. A good metal material is formed integrally. The heat sink 30 includes a base 32, a square plate 34 coupled to the bottom of the base 32, and a plurality of fins 36 extending vertically downward from the bottom surface of the body 34. The pedestal 32 is received in the lower portion of the casing 10, and its top surface is in contact with the bottom surface of the circuit board 24 of the LED module 20 to absorb the heat generated by the LEDs 22. The base 32 has two parallel side wall faces and two other outwardly convex arc-shaped side wall faces connecting the two parallel side wall faces, wherein the distance between the two ends of each arc-shaped side wall face is smaller than the parallel side The length of the wall. A plurality of threads 320 are formed in the horizontal direction on each of the arcuate side walls to be screwed into the threads in the housing 10 to screw the base 32 into the housing 10. The plate body 34 is located below the housing 10 and extends beyond the circumference of the housing 10 to a thickness less than the thickness of the base 32. The area of the plate body 34 is larger than the area of the base 32 for uniformly transferring the heat absorbed by the base 32 to the fins 36. The length of the plate body 34 is equal to the two arc-shaped sides of the base 32. The distance between the outermost ends of the walls is greater than the distance between the two parallel side walls of the base 32. The fins 36 occupy the entire bottom surface of the plate body 34, and each two adjacent fins 36 are parallel to each other and spaced apart from each other to form a plurality of air flow passages. [0013] Referring again to FIG. 1 and FIG. 2, the cover 40 is circumferentially mounted on the housing 10, and includes an annular wall portion 42 and a flange extending horizontally outward from the top end of the wall portion 42. 44. The opposite card slot 420 is defined in the lower portion of the wall portion 42 and corresponds to the two lugs 14, wherein each of the card slots 420 has a "T" shape 096151098. Form No. A0101 Page 6 / Total 14 pages 1003444110-0 1360622 The 100th, November, and 30th revisions have a lower portion that vertically penetrates the bottom end of the wall portion 42 and an upper portion that is horizontally disposed and whose length is greater than the height of the lower portion. The two card slots 420 are used to clamp the elastic arms 50 to be pivotally connected to the cover 40. The wall portion 42 defines two horizontal perforations (not shown) at positions above the two card slots 420, and the two through holes are aligned with the screw holes of the lugs 14 for the screws 60 to be inserted. The outer edge of the crotch portion 44 is wavy and is used to limit the light-emitting diode recessed light against the outer side of the ceiling or wall. [0014] The elastic arms 50 are respectively inserted into the two card slots 420. Each of the elastic arms 50 is integrally bent by an elastic metal wire, and includes a spiral portion 52 and a pressing portion 54 formed upward from the spiral portion 52. The pressing portion 54 is opposite to the housing 10 The wall portion 42 is disposed obliquely to both sides. The spiral portion 52 is engaged in the slot 420 of the cover 40 to pivotally connect the elastic arm 50 to the cover 40. The pressing portion 54 is configured to elastically press against the inner side of the ceiling or the wall to fix the light-emitting diode together with the flange portion 44 of the cover 40. [0015] When the LED is embedded, the spiral portions 52 of the two elastic arms 50 are respectively locked into the two slots 420 of the cover 40; and the cover 40 is placed on the housing 10. The hole is aligned with the screw hole of the lug 14; then, the screw 60 is passed through the wall portion 42 of the cover 40 from the outside of the light-emitting diode, and the screw 60 is rotated inwardly to be screwed to the housing. 10; then, the elastic arm 50 is rotated to be placed on the side of the heat sink 30 in a vertical position, and then the LED of the light-emitting diode is inverted in this state, and then placed into the hole of the ceiling or the wall from bottom to top. The crotch portion 44 of the cover 40 is placed against the outer side of the ceiling or wall; then, the two resilient arms 50 are rotated in the direction of the cover 40 to press outwardly against the inside of the ceiling or wall. Thereby, the installation process of the light-emitting diode downlight is completed. 096151098 Form No. A0101 Page 7 of 14 1003444110-0 1360622 _ November 2015 · 30th Shuttle is replacing 100 [0016] When disassembling the LED recessed lamp, you only need to operate the above process in reverse. [0017] Compared with the prior art, the fin 36 of the heat sink 30 of the LED of the present invention is connected to the underside of the pedestal 32 by the plate body 34, which does not need to occupy the side of the pedestal 32. The thickness of the pedestal 32 can be controlled to a small extent. Therefore, even if the area of the pedestal 32 is increased due to the expansion of the area of the illuminating diode module 30, the pedestal 32 is not greatly increased as in the conventional illuminator of the illuminating diode. The volume, so that the overall weight of the heat sink 30 is well controlled, facilitates the transportation and installation of the light-emitting diode downlight. [0018] It can be understood that, in the case where the heat dissipation requirement is not high, the heat sink 30 of the present invention can also omit the plate body 34, so that the fins 36 directly extend out from the bottom of the base 32, thereby saving the light-emitting diode. The overall cost of the body-mounted lamp. [0019] In summary, the present invention has indeed met the requirements of the invention patent, and the patent application is filed according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by those skilled in the art to the spirit of the invention are intended to be included within the scope of the following claims. BRIEF DESCRIPTION OF THE DRAWINGS [0020] FIG. 1 is an assembled view of a light-emitting diode downlight according to an embodiment of the present invention. 2 is an exploded view of FIG. 1. 3 is a longitudinal cross-sectional view of FIG. 1 in which the light-emitting diode downlight is inverted. [Description of main component symbols] [0023] Housing: 10 096151098 Form No. A0101 Page 8 of 14 1003444110-0 1360622 [0024] Recess: 12 [0025] Lug: 14 [0026] Luminous Diode Group: 20 [0027] Light-emitting diode: 22 [0028] Circuit board: 24 [0029] Heat sink: 30 [0030] Base: 32 [0031] Thread: 320 [0032] Plate: 34 [0033] Fins Sheet: 36 [0034] Cover: 40 [0035] Wall: 42 [0036] Card slot: 420 [0037] Crotch: 44 [0038] Elastic arm: 50 [0039] Spiral: 52 [0040] Compression Part: 54 [0041] Screw: 60 096151098 Form No. A0101 Page 9 of 14 Page 100. November 30 Revision Replacement Page 1003444110-0