M344428 八、新型說明： 【新型所屬之技術領域】 本創作是關於一種照明元件，尤其是關於一種發光二 極體燈。 【先前技術】 • 由於發光二極體具有節能的優勢，近來以發光二極體 .取代傳統白熾燈或日光燈作為一般照明的趨勢越來越明 _顯。不論是用電量較大的路燈，或是一般的室内燈皆已開 始採用發光二極體作為光源來減少能源的消耗。 但由於發光二極體之發光效率會在受熱的情況下減 低，嚴重者更可能會在受熱下減損其壽命，因此，必須要 對發光二極體所產生的熱量進行有效的管理，迅速地將發 光—極體周圍的熱量移除。 一般的發光二極體室内燈通常會在用以設置發光二極 體的燈罩上製作出為數眾多的散熱鰭片，該等散熱鰭片通 常呈放射狀地排列於發光二極體的周圍，使發光二極體的 熱量傳導至燈罩上，並經由燈罩上的散熱鰭片與周圍空氣 進行熱交換，以將熱量逸散至空氣中。 然而，上述發光二極體燈之散熱效果主要取決於燈罩 的導熱肖b力，以及散熱鰭片所增加的熱交換面積，散熱效 果有限，無法完全滿足發光二極體的散熱要求，仍容易導 致發光二極體發光效率降低以及壽命減損。 【新型内容】 因此，本創作之一目的，在於提供一種發光二極體 5 M344428 燈，可有效提升散熱效果。 為達上述目的，本創作提供一種發光二極體燈，包含 一燈罩、一前蓋、一散熱片，以及一發光二極體單元。該 燈罩具有一開口。該前蓋對應蓋設於該開口並與該燈罩配 合界定一容置空間。該散熱片為金屬材質所製成，位於該 .容置空間内且至少固設於該燈罩及該前蓋之其中一者上， 並將该容置空間分隔為一鄰近該燈罩之第一子容置空間， 籲以及一鄰近該前蓋之第二子容置空間。該發光二極體單元 設置於該散熱片上並位於該第二子容置空間内，其中，該 燈罩形成有多數個連通該第一子容置空間之第一通孔、該 前蓋形成有多數個連通該第二容置空間之第二通孔，且該 散熱片形成有多數個連通該第一子容置空間及該第二子容 置空間之第三通孔。 本創作藉由形成於該燈罩上並連通該第一子容置空間 馨的忒等第一通孔、形成於該前蓋上並連通該第二容置空間 亥等第二通孔，以及形成於該散熱片上並連通該第一子 容置空間及該第二子容置空間之第三通孔，使氣流可自由 地在外界與該第一子容置空間與第二子容置空間中流動， 並與該燈罩與該前蓋以及該散熱片進行熱交換，以有效提 升整體發光二極體燈之散熱效果。 【實施方式】 >有關本創作之技術内容，在以下配合參考圖式之較佳 實施1例中，將可清楚的獲得說明： 如第一圖及第二圖所示，為本創作發光二極體燈之第 6 M344428 一較佳實施例，該發光二極體燈包含一燈罩10、一前蓋 20、一散熱片30、一金屬導熱柱4〇、一發光二極體單元 50，以及一端子座60。 該燈罩10大致呈一碗狀並具有一環型開口 U，其為鋁 等導熱性較佳之金屬材質所製成。此外，該燈罩1〇形成有 夕數個位於该開口 11之相反端的第一通孔12。該等第一通 •孔12呈環型排列。 • 該前蓋20對應蓋設於該燈罩1〇之開口 η上，並與該燈 罩10配合界定一容置空間，該前蓋20為鋁等導熱性較佳之 金屬材質所製成。詳細來說，該前蓋20包含一由該燈罩1〇 之開口 11周緣向内延伸之環狀邊緣部21、一由該環狀邊緣 部21斜向地朝該發光二極體單元5〇延伸的反射部22，該反 射部2 2大致呈一截頭圓錐狀並形成有一露出該發光二極體 單元50之出光口23。其中，該反射部22形成有多數個共同 %繞该出光口 23之第一通孔221 。此外，該環狀邊緣部21 •形成有多數個之弧狀穿槽211 。 該散熱片30位於該燈罩10與該前蓋20配合界定之容置 • 空間内，並接觸地固設於該燈罩1〇及該前蓋20之間。該散 - 熱片30將該容置空間分隔為一鄰近該燈罩10之第一子容置 空間70，以及一鄰近該前蓋20之第二子容置空間8〇。今气 熱片30形成有多數個第三通孔31，且為鋁等導熱性較佳之 金屬材質所製成。在本實施例中，該散熱片30大致呈一深 度較該燈罩1〇為淺之碗狀，且其周緣對應抵接於該燈罩1〇 之開口 11周緣。 7 M344428 該導熱柱40設於該第一子容置空間70中，並以其兩相 反面分別接觸該散熱片30及该燈罩10。該導熱柱4〇是以銘 等導熱性較佳之金屬材質所製成，用以使該散熱片3〇及該 燈罩10形成熱導通。該導熱柱40具有一用以增加散熱面積 之窗輪狀外廓’以及一由其上表面貫穿至下表面的貫孔 41 〇 ’ 該發光二極體單元50設置於該散熱片30上並位於該第 _二子容置空間80内。詳細來說，該發光二極體單元8〇包含 一與該散熱片30形成良好接觸之基板51、一設於該基板51 上的發光二極體晶片52、一封蓋該發光二極體晶片52之封 裝透鏡體53，以及一設於該封裝透鏡體53上並穿伸出該前 蓋20之出光口 23的透鏡元件54。 該端子座60連接於該燈罩1〇上，其具有一殼體61及二 由該殼體61底端穿伸至該殼體61内之端子62，該等端子62 供該發光二極體單元50以導線（圖未示）與其電連接，使 *外部電源（圖未示）可藉以驅動該發光二極體單元5〇發 光。 藉由形成於該燈罩1 〇上並連通該第一子容置空間7 〇的 •省4第一通孔12、形成於該前蓋20上並連通該第二容置空 間80之該等第二通孔221與弧狀穿槽211 ，以及形成於該 散熱片30上並連通該第一子容置空間7〇及該第二子容置空 間80之第三通孔31，使氣流可沿第二圖之虛線箭頭方向自 由地在外界與該第一子容置空間7〇與第二子容置空間8〇中 流動’並與該燈罩1〇與該前蓋2〇以及該散熱片30進行熱交 8 M344428 換可有效提升整體發光二極體燈之散熱效果，避免發光 二極體受熱而降低之其發光效率或減損其壽命，確實達成 本創作之功效。 此外，實際應用時，本創作之發光二極體燈更可配合 々外加式或内置式的風扇（圖未示），用以使氣流經由該 等第一通孔12、第二通孔221 ，以及第三通孔31，強制地 •在外界與第一子空間70、第二子容置空間80之間流動，以 •進一步增加散熱效果。另外，在本實施例中，該等第一通 孔12、第二通孔221 ，以及第三通孔31之形狀為圓形，實 際實施時不以此限，可為各種形狀。 以上所述者僅為本創作之較佳實施例，並非用以限定 本創作之實施範圍。凡依本創作申請專利範圍所作之等效 變化與修飾，皆仍屬本創作專利所涵蓋之範圍内。 【圖式簡單說明】 第一圖為本創作發光二極體燈的較佳實施例的立體分 解圖。 一 第二圖為第一圖之發光二極體燈的剖視圖。 【主要元件符號說明】 燈罩10 開口 11 第一通孔12 前蓋20 邊緣部21 穿槽211 反射部22 出光口 23 第二通孔221 散熱片30 9 M344428 第三通孔31 金屬導熱柱40 貫孔41 發光二極體單元50 基板51 發光二極體晶片52 封裝透鏡體53 透鏡元件54 端子座60 殼體61 端子62 第一子容置空間70 第二子容置空間80M344428 VIII. New description: [New technical field] The present invention relates to a lighting element, in particular to a light-emitting diode lamp. [Prior Art] • Due to the energy-saving advantages of LEDs, the trend of replacing traditional incandescent lamps or fluorescent lamps as general illumination with LEDs has become more and more obvious. Whether it is a street lamp with a large amount of electricity or a general indoor lamp, the light-emitting diode is used as a light source to reduce energy consumption. However, since the luminous efficiency of the light-emitting diode is reduced under heat, it is more likely that the life of the light-emitting diode will be degraded under heat. Therefore, it is necessary to effectively manage the heat generated by the light-emitting diode and quickly Luminescence—The removal of heat around the polar body. Generally, a light-emitting diode indoor lamp usually has a plurality of heat-dissipating fins formed on a lamp cover for arranging the light-emitting diodes, and the heat-dissipating fins are generally arranged radially around the light-emitting diodes. The heat of the light-emitting diode is conducted to the lamp cover and exchanges heat with the surrounding air via the heat-dissipating fins on the lamp cover to dissipate heat into the air. However, the heat dissipation effect of the above-mentioned light-emitting diode lamp mainly depends on the heat conduction b-force of the lamp cover and the heat exchange area of the heat-dissipating fin, and the heat dissipation effect is limited, and the heat dissipation requirement of the light-emitting diode cannot be fully satisfied, which is still easy to cause. The luminous efficiency of the light-emitting diode is lowered and the lifetime is degraded. [New content] Therefore, one of the purposes of this creation is to provide a light-emitting diode 5 M344428 lamp, which can effectively improve the heat dissipation effect. To achieve the above object, the present invention provides a light-emitting diode lamp comprising a lamp cover, a front cover, a heat sink, and a light-emitting diode unit. The lampshade has an opening. The front cover is correspondingly disposed on the opening and cooperates with the lamp cover to define an accommodating space. The heat sink is made of a metal material, and is located in the accommodating space and is at least fixed on one of the lamp cover and the front cover, and partitions the accommodating space into a first sub-part of the lamp cover. The accommodation space, the appeal and a second sub-accommodation space adjacent to the front cover. The light emitting diode unit is disposed on the heat sink and located in the second sub-accommodating space, wherein the lamp cover is formed with a plurality of first through holes that communicate with the first sub-accommodating space, and the front cover is formed with a majority a second through hole that communicates with the second accommodating space, and the heat sink is formed with a plurality of third through holes that communicate with the first sub accommodating space and the second sub accommodating space. The first through hole formed on the lamp cover and communicating with the first sub-accommodating space, the second through hole formed on the front cover and communicating with the second receiving space, and the like The third through hole of the first sub-accommodating space and the second sub-accommodating space is connected to the heat sink, so that the airflow can be freely in the outside and the first sub-accommodating space and the second sub-accommodating space. Flowing, and performing heat exchange with the lamp cover and the front cover and the heat sink to effectively improve the heat dissipation effect of the overall light-emitting diode lamp. [Embodiment] > The technical content of the present invention will be clearly explained in the following preferred embodiment of the reference drawing: as shown in the first figure and the second figure, In a preferred embodiment of the present invention, the light-emitting diode lamp comprises a lamp cover 10, a front cover 20, a heat sink 30, a metal heat-conducting column 4A, a light-emitting diode unit 50, and A terminal block 60. The lampshade 10 has a substantially bowl shape and has a ring-shaped opening U made of a metal material having a good thermal conductivity such as aluminum. Further, the globe 1 is formed with a plurality of first through holes 12 at opposite ends of the opening 11. The first through holes 12 are arranged in a ring shape. The front cover 20 is disposed on the opening η of the lamp cover 1 and defines an accommodation space for engaging with the lamp cover 10. The front cover 20 is made of a metal material having better thermal conductivity such as aluminum. In detail, the front cover 20 includes an annular edge portion 21 extending inwardly from the periphery of the opening 11 of the lampshade 1 , and an annular edge portion 21 obliquely extending toward the LED unit 5 The reflecting portion 22 has a substantially frustoconical shape and is formed with a light exit opening 23 for exposing the light emitting diode unit 50. The reflection portion 22 is formed with a plurality of first through holes 221 around the light exit opening 23 . Further, the annular edge portion 21 is formed with a plurality of arcuate through grooves 211. The heat sink 30 is located in the receiving space defined by the lamp cover 10 and the front cover 20, and is fixedly disposed between the lamp cover 1 and the front cover 20. The heat sink 30 divides the accommodating space into a first sub-accommodation space 70 adjacent to the lampshade 10, and a second sub-accommodation space 8A adjacent to the front cover 20. The present gas sheet 30 is formed with a plurality of third through holes 31 and is made of a metal material having a good thermal conductivity such as aluminum. In this embodiment, the heat sink 30 has a substantially shallow bowl shape that is shallower than the shade 1 ,, and its peripheral edge abuts against the periphery of the opening 11 of the shade 1〇. 7 M344428 The heat conducting column 40 is disposed in the first sub-accommodating space 70, and contacts the heat sink 30 and the lampshade 10 with two opposite sides thereof. The heat conducting column 4 is made of a metal material having a better thermal conductivity such as that of the heat sink 3 and the lamp cover 10 to be thermally conductive. The heat conducting column 40 has a window wheel-shaped outer profile for increasing the heat dissipation area and a through hole 41 〇' through which the upper surface penetrates to the lower surface. The light emitting diode unit 50 is disposed on the heat sink 30 and located The second and second sub-chambers are accommodated in the space 80. In detail, the LED unit 8 includes a substrate 51 that is in good contact with the heat sink 30, a light emitting diode chip 52 disposed on the substrate 51, and a light emitting diode chip. A package lens body 53 of 52, and a lens element 54 disposed on the package lens body 53 and extending through the light exit opening 23 of the front cover 20. The terminal block 60 is connected to the lamp cover 1A, and has a housing 61 and two terminals 62 extending from the bottom end of the housing 61 into the housing 61. The terminals 62 are provided for the LED unit. 50 is electrically connected to a wire (not shown) such that an external power source (not shown) can drive the light-emitting diode unit 5 to emit light. The first through hole 12 formed on the lamp cover 1 连通 and communicating with the first sub-accommodation space 7 、 is formed on the front cover 20 and communicates with the second accommodating space 80 a two-way hole 221 and an arc-shaped through hole 211, and a third through hole 31 formed on the heat sink 30 and communicating with the first sub-accommodating space 7 and the second sub-accommodating space 80, so that the airflow can be along The direction of the dotted arrow in the second figure is free to flow in the outside and the first sub-accommodating space 7 〇 and the second sub-accommodating space 8 ' and to the lampshade 1 and the front cover 2 〇 and the heat sink 30 The heat exchange 8 M344428 can effectively improve the heat dissipation effect of the overall light-emitting diode lamp, and avoid the luminous efficiency of the light-emitting diode which is reduced by heat or detract from its life, and indeed achieve the effect of the creation. In addition, in practical applications, the LED light of the present invention can be matched with an external or built-in fan (not shown) for allowing airflow through the first through holes 12 and the second through holes 221, And the third through hole 31 forcibly flowing between the outside and the first subspace 70 and the second sub-accommodation space 80 to further increase the heat dissipation effect. In addition, in the present embodiment, the first through hole 12, the second through hole 221, and the third through hole 31 are circular in shape, and the actual implementation is not limited thereto, and may be various shapes. The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. Equivalent changes and modifications made in accordance with the scope of the patent application for this creation are still within the scope of this creation patent. BRIEF DESCRIPTION OF THE DRAWINGS The first figure is a perspective exploded view of a preferred embodiment of the inventive light-emitting diode lamp. A second view is a cross-sectional view of the light-emitting diode lamp of the first figure. [Main component symbol description] Lampshade 10 opening 11 first through hole 12 front cover 20 edge portion 21 through slot 211 reflection portion 22 light exit port 23 second through hole 221 heat sink 30 9 M344428 third through hole 31 metal heat conduction column 40 Hole 41 Light-emitting diode unit 50 Substrate 51 Light-emitting diode chip 52 Package lens body 53 Lens element 54 Terminal block 60 Housing 61 Terminal 62 First sub-accommodation space 70 Second sub-accommodation space 80