200928184 九、發明說明： 【發明所屬之技術領域】 特別係指一種具有 本發明涉及一種發光二極體礙燈， 散熱裝置之發光二極體嵌燈。 【先前技術】 ' 相比於傳統之發光源，發光二極體具有重量輕、體積 ❹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。 在至内照明中’某些燈具被設計成嵌入於牆壁或天花 板内以此獲付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 於设體内之發光一極體模組、一固定至殼體上之罩體及二 樞接於罩體相對兩侧之彈性臂。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侧，以 將喪燈固定在牆壁或天花板内。 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 6 200928184 i卜Π:發光二極體所產生之熱量藉由導熱柱傳導200928184 IX. Description of the invention: [Technical field to which the invention pertains] In particular, the invention relates to a light-emitting diode recessed lamp with a heat-dissipating device and a heat-dissipating device. [Prior Art] ' Compared with the traditional light source, the light-emitting diode has the advantages of light weight, small volume, low pollution, long life, etc. As a new type of light source, it has been increasingly applied to In various fields, such as street lights, traffic lights, signal lights, spotlights and decorative lights, etc. In interior lighting, some of the luminaires are designed to be embedded in a wall or ceiling to provide a better overall visual effect. These luminaires are collectively referred to in the industry as recessed lights. The conventional recessed lamp generally includes a cylindrical casing, a light-emitting one-pole module housed in the body, a cover fixed to the casing, and two elastic arms pivotally connected to opposite sides of the cover. . The cover body includes a set of wall portions disposed on the body of the case and a crotch portion formed at the top end of the wall portion. The wall of the cover penetrates into the hole of the wall or ceiling and abuts against the outside of the wall or ceiling by its crotch. The resilient arms abut against the inside of the wall or ceiling to secure the mourning light within the wall or ceiling. The LED module includes a circuit board and a plurality of LEDs 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 housing. A conventional heat sink for a recessed light includes a heat conducting column in contact with a bottom of a circuit board of a light emitting diode module and a plurality of heat conducting columns from the side of the heat conducting column. The heat generated by the light emitting diode is passed through the heat conducting column. Conduction
_ _形成於導熱柱之侧面，其高度柱U 度相同。為使鰭片具有充足之散熱面積，如增加韓片之言 度則導熱柱亦需相應地增高。另一方面，為使所有之發: 二極體所產生之熱量均可經由最短之路#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 ❾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，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 繞女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。 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 7 200928184 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’發光二極體鼓燈之運輸及安裝之便利性 得到保障。 【實施方式】 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。該發光二極體喪燈包括一殼體1〇、一容置於殼體1〇 内之發光二極體模組20、一固定至殼體1〇上之罩體4〇、 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。 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，其侧壁面形成一反射面，用於反射發光二極 體22所產生之光線。殼體之外周面上之相對兩侧分別 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 螺合。 ’μ 所述發光二極體模組20收容於殼體10内，其發光二 8 200928184 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。 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 D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 具有二相互平行之侧壁面及二連接該二平行之侧壁面之另 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側壁面之長度。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 〇厚度。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之二圓弧形之侧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。 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 9 200928184 之下部且與二凸耳14相互對應，其中每一卡槽42〇均呈“τ” *形’其下部暨直貫穿壁部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/良形，其用於抵靠於天花板或牆壁之外侧而對發光 ❹一極體嵌燈限位。 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1〇之壁部42向兩侧傾斜設置。螺旋部α 卡設於所述罩體40之卡槽420内而將彈性臂5〇樞接於罩 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。 ® 女裝該發光二極體喪燈時，首先將二彈性臂之螺旋 部52分別卡設至罩體4〇之二卡槽42〇内；再將罩體仙套 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4〇之壁邛 42 ’向内旋轉螺絲60而使其螺鎖於殼體上；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μ 板或牆壁之外側；然後，朝罩體40之方向旋轉二二性= 200928184 50，使其向外抵壓於天花板或牆壁之内侧。由此，完成了 • 發光二極體嵌燈之安裝過程。 • 拆卸發光二極體嵌燈時，只需反向操作上述流程即可。 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32之侧面，可使基座32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。 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。 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】 圖1係本發明實施例之發光二極體嵌燈之組裝圖。 圖2係圖1之分解圖。 圖3係圖1之縱向截面圖，此時發光二極體嵌燈被倒置。 11 200928184 【主要元件符號說明】 殼體 10 凹部 12 凸耳 14 發光二極體模組 20 發光二極體 22 電路板 24 散熱器 30 基座 32 螺紋 320 板體 34 鰭片 36 罩體 40 壁部 42 卡槽 420 簷部 44 彈性臂 50 螺旋部 52 抵壓部 54 螺絲 60 ❹ 12_ _ is formed on the side of the heat-conducting column, and its height column is the same. In order to make the fins have sufficient heat dissipation area, if the brightness of the Korean film is increased, the heat transfer column should be correspondingly increased. On the other hand, in order to make all the heat: the heat generated by the diode can be transmitted to the heat-conducting column via the shortest path #, the heat-conducting column needs to be in full contact with the circuit board, that is, the top area of the heat-conducting column needs to be reduced. Equal to the area of the circuit board of the LED module. If the LED module is large, the top area of the thermal column must be increased accordingly to ensure a sufficient heat transfer area. However, the heat transfer column is increased in height, and the area will cause the volume of the heat transfer 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 casing surrounding the casing on the casing And two elastic arms that are pivotally connected to opposite sides of the cover. The heat sink includes a base having a top surface in contact with the LED module and a plurality of fins formed on the bottom of the base. 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 fin extends downward from the bottom surface 7 200928184 of the base. It is necessary to occupy the side of the base so that the base is not too high, and thus the volume of the base is not greatly increased, so that the weight of the heat sink is controlled. The convenience of transportation and installation of the 'light-emitting diode drum lamp is thus ensured. [Embodiment] As shown in Fig. 1-2, the LED of the present invention is used for embedding in a hole in a ceiling or a wall (not shown) and on the exterior of the ceiling or wall. The light-emitting diode lamp comprises a casing 1 , a light-emitting diode module 20 housed in the casing 1 , a cover body 4 fixed to the casing 1 , and two pivotal joints respectively The elastic arms 50 on opposite sides of the cover 40 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. The housing 10 is a hollow cylinder having a cavity recessed downwardly from the top surface (not shown). The chamber has a circular table shape whose inner diameter gradually decreases from the top to the bottom, and the bottom surface thereof uniformly has three recesses 12 ′ for accommodating the light-emitting diodes 22 of the light-emitting diode module 20. The inner diameter of each recess 12 is also gradually reduced from top to bottom, and the side wall surface thereof forms a reflecting surface for reflecting the light generated by the light-emitting diode 22. Two rectangular lugs 14 project outwardly from opposite sides of the outer peripheral surface of the housing, wherein the top of each lug 14 is lower than the top of the housing 10, and the bottom thereof is flush with the bottom of the housing 10. A horizontally oriented screw hole (not shown) is provided on the upper portion of each lug 14 for screwing. The light-emitting diode module 20 is housed in the casing 10, and the light-emitting body 20 is inserted into the recess 12 of the casing 10, respectively. When the light-emitting diodes 22 are energized, part of the light emitted by the light-emitting diodes 22 can be reflected by the emitting surface of the concave portion 12 and condensed into the corresponding light columns, thereby radiating a large light intensity. Referring to Fig. 3 together, the heat sink 30 is mounted on the bottom of the casing 10 and is integrally formed of a metal material having good thermal conductivity. The heat sink 30 includes a base 32, a square plate body 34 coupled to the bottom of the base 32, and a plurality of fins 36 extending vertically downward from the bottom surface of the plate body 34. The pedestal 32 is received in the lower portion of the casing D body 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 illuminating diode 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 wall faces, which are 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 arcs of the base 32. The distance between the outermost ends of the side wall faces is greater than the distance between the two parallel side wall faces 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. Referring to Figures 1 and 2, the cover 40 is circumferentially mounted to the housing 10 and includes an annular wall portion 42 and a flange portion 44 extending horizontally outwardly from the top end of the wall portion 42. The opposite slot 420 is defined in the lower portion of the wall portion 42 9 200928184 and corresponds to the two lugs 14 , wherein each of the slots 42 呈 has a “τ” shape and a lower portion thereof directly penetrates the bottom end of the wall portion 42 . The upper portion is horizontally disposed and its 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. The two 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 wave/good, which is used to abut the ceiling or the outer side of the wall to limit the position of the light-emitting body. 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 casing 1 The wall portion 42 is inclined to both sides. The spiral portion α is engaged in the card slot 420 of the cover 40 to pivotally connect the elastic arm 5 to the cover 40. The abutting 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 crotch portion 44 of the cover 40. ® Women's Light Emitting Dipoles When first, the spiral portions 52 of the two elastic arms are respectively locked into the two slots 42 of the cover 4; and the cover is placed on the housing 10. Aligning the perforations with the screw holes of the lugs 14; thereafter, screwing the screws 60 through the cover 42' from the outside of the illuminating diodes to the inside of the illuminating diodes 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 wall or wall; then, the direction of the cover 40 is rotated by the second sex = 200928184 50, so that it is pressed outward against the ceiling or the inside of the wall. As a result, the installation process of the light-emitting diode downlight is completed. • When removing the LED recessed light, simply reverse the above process. Compared with the prior art, the fin 36 of the heat sink 30 of the light-emitting diode downlight of the present invention is connected to the underside of the base '32 by the plate body 34, which does not need to occupy the side of the base 32, and can make the base The thickness of the seat 32 is controlled to a small extent. Therefore, even if the area of the large 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. 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 downlight. The overall cost. In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application 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 in this case. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the present invention are intended to be included in the scope of the following claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an assembled view of a light-emitting diode recessed lamp according to an embodiment of the present invention. Figure 2 is an exploded view of Figure 1. Figure 3 is a longitudinal cross-sectional view of Figure 1, in which the light-emitting diode downlight is inverted. 11 200928184 [Description of main components] Housing 10 Recessed part 12 Lug 14 Light-emitting diode module 20 Light-emitting diode 22 Circuit board 24 Heat sink 30 Base 32 Thread 320 Plate 34 Fin 36 Cover 40 Wall 42 Card slot 420 檐 44 44 Elastic arm 50 Spiral 52 Compression 54 Screw 60 ❹ 12