201009249 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，特別係指一種發光二 極體燈具。 【先前技術】 發光二極體作為一種新興的第三代光源，因其具 有工作壽命長、節能、環保等優點而普遍被市場看好。 ❹ 由發光二極體組成的模組能產生南免度的光源，正日 益取代白熾燈等習知的光源在燈具中得到應用，比如 室内照明燈具。然而，發光二極體模組提供的是點光 源，容易造成眩光，肉眼直視該點光源會感到不適， 嚴重地甚至會損傷眼睛。 【發明内容】 有鑒於此，有必要提供一種光效柔和的發光二極體燈 具。 ® —種發光二極體燈具，包括一燈罩、一散熱器及至少 一發光二極體模組，該燈罩包括一内凹的殼體，該殼體的 頂部設有一開口，該散熱器收容於該殼體中，該至少一發 光二極體模組貼設在該散熱器的底部並與該殼體的内壁間 隔相對，該至少一發光二極體模組發出的至少部分光線先 照射到該殼體的内壁上，然後藉由該内壁反射向該開口的 外側照射。 一種發光二極體燈具，包括一燈罩、一散熱器及兩排 201009249 發光二極體，該燈罩内形成一凹槽，該燈罩的頂部形成— 開口與外界相通’該散熱器收容於該殼體中，該散熱器包 括一v形基座及自該基座的頂部延伸而出的散熱片，該兩 排發光二極體分別貼設在該基座的底部的兩侧與該燈罩的 内壁間隔相對’該兩排發光二極體發出的光線先照射到該 燈罩的内壁，並經由該内壁的反射朝向燈罩的開口照射出 去。 一種發光一極體燈具，包括一燈罩、一散熱器及多個 發光二極體，該燈罩内形成凹槽，該燈罩的頂部形成與外 界相通的開口，該散熱器安裝在該燈罩内的凹槽中央並接 近燈罩的底部位置處，該多個發光二極體安裝在該散熱器 上並朝向燈罩的底部設置，該多個發光二極體發出的光線 經由該燈罩的内壁反射後從燈罩的開口處照射出去。 所述發光二極體模組的光線均會先經過該燈罩的内表 面反射，然後從該開口照射出去。因此，人眼從該燈具的 開口的外側任何角度都不能直接看到該等發光二極體模組 所發出的光線，從而該發光二極體燈具可提供形成較為柔 和的面光源’避免了眩光現象。 【實施方式】 下面參照圖示，結合實施例詳細說明本發明。 請參照圖1，所示為本發明一較佳實施例的發光二極體 燈具100 ’该燈具100包括一燈罩10、兩個發光二極體模 組30及一散熱模組50，該燈罩1〇為一内凹的殼體，該散 201009249 熱模組5G藉由螺釘6Q與該燈罩1()連接，所述發光二極體 模組3〇貼設在該散熱模組5〇的底部並與該燈罩10的内表 面間隔相對。 山請同時參照圖2與圖3,該燈罩1〇包括一般體n及兩 個端板13，該殼體U沿縱長方向延伸，其橫截面大致成拱 形》亥戒體11包括一底板ιη及兩個側板113，該底板m 位於該燈罩10的底部，該兩個側板113自該底板nl的兩 侧傾斜向上延伸。該底板111具有一内壁1110，每一侧板 113具有一内壁113〇。 該兩個端板13為梯形平板’該兩個端板13分別一體 連接於該殼體11的縱向兩端，從而該殼體n與端板13合 圍形成一凹槽15。每一端板13具有一内壁130，所述内壁 130、1110、1130面向該凹槽15。該燈罩1〇上與底板1;11 相對的頂部設有一開口 156，該凹槽15的寬度沿從該底板 111到該開口 156’即從底部往頂部的方向逐漸變寬。每一 端板13上設有兩個通孔136用於穿設螺釘60。所述内壁 1110、1130及内壁130的表面塗附有高反射性的材料，比 如鍍鎳或鍍鋁。 每一發光二極體模組30包括一基板31及複數發光二 極體33。該基板31沿與該燈罩1〇的底板111平行的方向 延伸。該等發光二極體33沿縱向均勻間隔地安裴在該基板 31上。該基板31通常為一電路板或是在其一側覆蓋一層印 刷電路。 該散熱模組50包括一散熱器51及兩個熱管55。該散 201009249 熱器51包括一基座510及複數散熱片5i2，該基座510沿 縱向延伸並具有—V形截面。所述散熱片512從該基座510 的頂部-體向上延伸。該基座51〇的底部兩側分別開設有 -條縱長延伸的凹槽515(見圖3)，該兩凹槽515用於收容 所述熱管55。 該兩個熱管55沿與該散熱器51的基座51〇平行的方 向L伸，母一熱管具有一扁平的接觸面55〇。該兩個熱管 55對應收容於該基座51〇的凹槽515中，且該熱管55的接 觸面550與該基座51〇的底面平齊。 裝配時，所述熱管55容置於散熱器51的凹槽515中 並可藉由焊接或者粘結的方式固定，同時，該熱管55的接 觸面550與該基座510的底面平齊。所述發光二極體模組 30的基板31可藉由螺絲或粘膠固定在該散熱器51的基座 510上’該兩個發光二極體模組30分別位於該基座510的 底部兩侧。並且，該基板31對應覆蓋在熱管55上並與接 觸面550接觸，該基板31與熱管55之間還可塗覆導熱膏 以減少熱阻。所述螺釘60從該燈罩10的縱向兩端穿過所 述通孔136並螺接於散熱片512之間，從而將該散熱器51 及發光二極體模組30固定至燈罩10内凹槽15的中央並靠 近殼體11的底板111的位置處，使各發光二極體33朝向 燈罩10的底部設置。 在其他的實施例中，該散熱模組50可不必包括熱管 55，而使發光二極體模組30的基板31直接貼設在散熱器 51的基座510上。 201009249 請同時參閱圖4，每一發光二極體33具有一發光面 330，該發光面330朝向該殼體11的底部並與底板111的 内壁1110相對。該發光面330發出的一部分光線71首先 照射到該内壁1110上，然後經反射向開口 156的方向照 射。該發光面330發出的另外一部分光線72首先照射到該 内壁1110上，然後經反射照射到該侧板113的内壁1130 上，接著藉由内壁1130反射向開口 156的方向照射。還有 一部分光線73首先照射到該内壁1130上，然後經反射向 開口 156的方向照射。 總而言之，所述發光二極體模組30的光線均會先經過 該燈罩10的内表面反射，然後從該開口 156照射出去。因 此，人眼從該燈具100的開口 156的外侧任何角度都不能 直接看到該等發光二極體模組30所發出的光線。藉由燈罩 10的内表面反射，發光二極體模組30的光線從該燈罩10 的内侧的多個方向同時向該開口 156的外側照射，從而形 成較為柔和的面光源，避免了眩光現象。 由於該發光二極體模組30的基板31直接貼設在熱管 55及散熱器51的基座510上，所述發光二極體33工作時 產生的熱量可藉由該散熱模組50得到迅速、有效地散發， 從而可保證該發光二極體模組30處於正常工作狀態。 在其他實施例中’發光二極體33的大部分光線需經過 燈罩10的内表面的反射，而部分光線也可不經由燈罩1〇 的内表面的反射，而直接射向開口 156，這樣在較大程度上 也能緩解眩光產生。 201009249 專利合發明專利之要件，爰依法提出 熟悉本案技藝之人士 較佳實施例’舉凡 或戀在荄依本發明精神所作之等效修飾 —變化’白應涵蓋於以下之申請專利範圍内。 【圖式簡單說明】 體組=Γ本發明的發光二極體燈具的―較佳實施例的立201009249 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 an emerging third-generation light source, the light-emitting diode is generally favored by the market because of its long working life, energy saving, and environmental protection.模组 Modules consisting of light-emitting diodes can produce south-free light sources, and conventional light sources such as incandescent lamps are increasingly used in luminaires, such as indoor lighting. However, the light-emitting diode module provides a point light source, which is easy to cause glare, and the naked eye can directly feel the discomfort and directly damage the eyes. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a light-emitting diode lamp with a soft light effect. A light-emitting diode lamp comprising a lamp cover, a heat sink and at least one light-emitting diode module, the lamp cover comprising a concave housing, the top of the housing being provided with an opening, the heat sink being received In the housing, the at least one light emitting diode module is attached to the bottom of the heat sink and spaced apart from the inner wall of the housing, and at least part of the light emitted by the at least one LED module is irradiated to the first The inner wall of the casing is then illuminated by the inner wall to the outside of the opening. A light-emitting diode lamp comprises a lamp cover, a heat sink and two rows of 201009249 light-emitting diodes, wherein a recess is formed in the lamp cover, and a top of the lamp cover is formed - an opening is communicated with the outside - the heat sink is received in the casing The heat sink includes a v-shaped base and a heat sink extending from a top of the base, and the two rows of light-emitting diodes are respectively disposed on both sides of the bottom of the base and spaced apart from the inner wall of the light cover. The light emitted by the two rows of light-emitting diodes first illuminates the inner wall of the lamp cover, and is irradiated toward the opening of the lamp cover through the reflection of the inner wall. A light-emitting one-pole lamp comprises a lamp cover, a heat sink and a plurality of light-emitting diodes, wherein the lamp cover forms a recess, the top of the lamp cover forms an opening communicating with the outside, and the heat sink is mounted in the recess of the lamp cover a plurality of light emitting diodes are mounted on the heat sink and disposed toward the bottom of the lampshade, and the light emitted by the plurality of light emitting diodes is reflected by the inner wall of the lampshade from the lampshade. Illuminate the opening. The light of the LED module is first reflected by the inner surface of the lamp cover and then radiated from the opening. Therefore, the human eye cannot directly see the light emitted by the light emitting diode modules from any angle outside the opening of the lamp, so that the light emitting diode lamp can provide a softer surface light source to avoid glare. phenomenon. [Embodiment] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. Please refer to FIG. 1 , which illustrates a light emitting diode lamp 100 ′ according to a preferred embodiment of the present invention. The lamp 100 includes a lamp cover 10 , two light emitting diode modules 30 , and a heat dissipation module 50 . The 2010 201009249 thermal module 5G is connected to the lampshade 1 () by a screw 6Q, and the illuminating diode module 3 〇 is attached to the bottom of the heat dissipation module 5 并 and It is spaced apart from the inner surface of the globe 10. Referring to FIG. 2 and FIG. 3 simultaneously, the lampshade 1A includes a general body n and two end plates 13. The casing U extends in the longitudinal direction and has a cross section substantially arched. The sea body 11 includes a bottom plate. And the two side plates 113 are located at the bottom of the lampshade 10, and the two side plates 113 extend obliquely upward from both sides of the bottom plate n1. The bottom plate 111 has an inner wall 1110, and each side plate 113 has an inner wall 113. The two end plates 13 are trapezoidal plates. The two end plates 13 are integrally connected to the longitudinal ends of the casing 11, respectively, so that the casing n and the end plate 13 are formed to define a recess 15. Each end plate 13 has an inner wall 130, and the inner walls 130, 1110, 1130 face the groove 15. The top of the lampshade 1 opposite the bottom plate 1; 11 is provided with an opening 156 whose width gradually widens from the bottom plate 111 to the opening 156', i.e., from the bottom to the top. Two through holes 136 are provided in each of the end plates 13 for threading the screws 60. The surfaces of the inner walls 1110, 1130 and the inner wall 130 are coated with a highly reflective material such as nickel plating or aluminum plating. Each of the light emitting diode modules 30 includes a substrate 31 and a plurality of light emitting diodes 33. The substrate 31 extends in a direction parallel to the bottom plate 111 of the globe 1〇. The light-emitting diodes 33 are mounted on the substrate 31 evenly spaced in the longitudinal direction. The substrate 31 is typically a circuit board or is covered on one side with a printed circuit. The heat dissipation module 50 includes a heat sink 51 and two heat pipes 55. The 201009249 heater 51 includes a base 510 and a plurality of fins 5i2 extending longitudinally and having a V-shaped cross section. The heat sink 512 extends upward from the top-body of the base 510. A groove 515 (see FIG. 3) extending longitudinally is formed on each of the two sides of the base of the base 51. The two grooves 515 are for receiving the heat pipe 55. The two heat pipes 55 extend in a direction L parallel to the base 51 of the heat sink 51, and the heat pipe has a flat contact surface 55A. The two heat pipes 55 are correspondingly received in the recess 515 of the base 51, and the contact surface 550 of the heat pipe 55 is flush with the bottom surface of the base 51. When assembled, the heat pipe 55 is received in the recess 515 of the heat sink 51 and can be fixed by welding or bonding, while the contact surface 550 of the heat pipe 55 is flush with the bottom surface of the base 510. The substrate 31 of the LED module 30 can be fixed on the base 510 of the heat sink 51 by screws or adhesives. The two LED modules 30 are respectively located at the bottom of the base 510. side. Moreover, the substrate 31 is correspondingly covered on the heat pipe 55 and in contact with the contact surface 550. A heat conductive paste may be applied between the substrate 31 and the heat pipe 55 to reduce thermal resistance. The screw 60 passes through the through hole 136 from the longitudinal ends of the lamp cover 10 and is screwed between the heat sinks 512 to fix the heat sink 51 and the LED module 30 to the recess of the lamp cover 10 . At the center of the 15 and near the bottom plate 111 of the casing 11, the respective light-emitting diodes 33 are disposed toward the bottom of the globe 10. In other embodiments, the heat dissipation module 50 does not need to include the heat pipe 55, and the substrate 31 of the LED module 30 is directly attached to the base 510 of the heat sink 51. 201009249 Referring also to FIG. 4, each of the light-emitting diodes 33 has a light-emitting surface 330 facing the bottom of the casing 11 and opposed to the inner wall 1110 of the bottom plate 111. A portion of the light 71 emitted from the light-emitting surface 330 is first irradiated onto the inner wall 1110 and then reflected toward the opening 156. The other portion of the light ray 72 emitted from the light-emitting surface 330 is first irradiated onto the inner wall 1110, and then irradiated onto the inner wall 1130 of the side plate 113 by reflection, and then irradiated toward the opening 156 by the inner wall 1130. A portion of the light 73 is first irradiated onto the inner wall 1130 and then reflected toward the opening 156 by reflection. In summary, the light of the LED module 30 is first reflected by the inner surface of the lamp cover 10 and then radiated from the opening 156. Therefore, the human eye cannot directly see the light emitted by the LED modules 30 from any angle outside the opening 156 of the lamp 100. By reflecting on the inner surface of the globe 10, the light of the LED module 30 is simultaneously radiated from the inside of the globe 10 to the outside of the opening 156, thereby forming a softer surface light source, thereby avoiding glare. Since the substrate 31 of the LED module 30 is directly attached to the heat pipe 55 and the base 510 of the heat sink 51, the heat generated by the LEDs 33 can be quickly obtained by the heat dissipation module 50. Effectively distributed, thereby ensuring that the LED module 30 is in a normal working state. In other embodiments, most of the light of the light-emitting diode 33 needs to be reflected by the inner surface of the lamp cover 10, and part of the light may be directly reflected toward the opening 156 without being reflected by the inner surface of the lamp cover 1 . To a large extent, it can also alleviate glare. 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 BRIEF DESCRIPTION OF THE DRAWINGS A body group = a preferred embodiment of a light-emitting diode lamp of the present invention
圖2是圖1所示發光二極體燈具的立體分解圖。 圖3是圖2所示發光二極體燈具的倒置圖。 圖4是圖1中沿iV_IV線的剖視圖。 【主要元件符號說 明】 發光一極體燈具 士 η «-»«» 100 燈罩 10 喊體 11 底板 111 内壁 1110,1130,130 側板 113 端板 13 通孔 136 凹槽 15,515 開口 156 發光二極體模組 30 基板 31 發光二極體 33 發光面 330 散熱模組 50 散熱器 51 基座 510 散熱片 512 熱管 55 接觸面 550 螺釘 60 112 is an exploded perspective view of the light-emitting diode lamp of FIG. 1. 3 is an inverted view of the light-emitting diode lamp of FIG. 2. Figure 4 is a cross-sectional view taken along line iV_IV of Figure 1. [Main component symbol description] Illuminated one-pole lamp η «-»«» 100 lampshade 10 shouting body 11 bottom plate 111 inner wall 1110, 1130, 130 side plate 113 end plate 13 through hole 136 groove 15, 515 opening 156 light-emitting diode mold Group 30 Substrate 31 Light-emitting diode 33 Light-emitting surface 330 Heat-dissipating module 50 Heat sink 51 Base 510 Heat sink 512 Heat pipe 55 Contact surface 550 Screw 60 11