201000817 九、發明說明： * 【發明所屬之技術領域】 本發明係關於一種光學元件，尤係一種發光二極 體燈具。 【先前技術】 習知之發光二極體燈具一般包括一殼體及設於殼 體内之發光二極體，利用將殼體之側壁製作成高反射 性斜面，將發光二極體發出之一部分光直接反射向發 光一極體燈具之出光面，達到照明之效果。 然而，上述發光二極體燈具中，藉由高反射性之 斜面對光線進行反射，使得光線僅經過殼體侧壁之一 次反射後即由殼體之出光面射出，這樣，易使光線集 中於出光面之某個特定之區域射出，產生炫光效果， 對人眼造成傷害。 【發明内容】 有鑒於此’有必要提供一種可降低炫光之發光二 極體燈具。 一種發光二極體燈具，包括一殼體、複數發光二 極體以及一透鏡，所述發光二極體及透鏡均設於所述 殼體内，所述發光二極體設於一軸截面為凹弧狀之承 載面上，所述透鏡具有一軸截面為凸狐狀之入光面， 所述透鏡之入光面與所述承載面相對，且相互之間間 隔一定距離。 6 201000817 上述發光二極體燈罝中 透鏡之.弧狀之入光面丄利二弧狀之承載面與 發光二極體與入光面間隔一 A於承載面上之 «Α ^ ^ ^疋之距離，使得發光二極 體所發出之光線沿不同夕拽〆^ 个丨j之路徑進入透鏡然 同之路徑由透鏡内射出 …、後又〜不 可沿多種不同之角度由不同 線 u位置離開透鏡，避免光線 過於集中之由透鏡之某一特宏 将疋之&域射出，使光線可 均勻/刀佈於透鏡之出光面上， uw工峄低了所；4發光二極體 燈具之炫光效果。 【實施方式】 下面將結合圖式對本發明實施例作進一步之詳细 日月。 '' 請參閱圖1，本發明發光二極體燈具包括一殼體 12以及設於殼體12内之一基座14、複數發光二極體 16和一透鏡18。 所述殼體12呈圓筒狀，其頂端開口，底端封閉， 且在所述殼體12之内部形成一空腔121。 所述基座14設於殼體12之空腔121内，與殼體 U之底端相接觸。該基座14大致呈圓柱狀，其底端 為一平面141。所述基座14之上表面向下凹陷，在基 座14之頂端形成一球冠狀之承載面143，該承載面143 之轴截面呈凹弧狀。所述承載面143與相對之底面之 間之距離由承載面14 3之邊緣沿從向向承載面14 3之 7 201000817 中心逐漸減小。 .戶斤述發光二極體16包括均布於所述承載面143 上之複數列發光二極體（圖i所示之軸向剖視圖中僅 示出沿承載面14 3之一條軸切輪廓線排列之一列發光 二極體16)’使各發光二極體16發出之一部分光線可 通過該承載面143所在球面之中心F。各發光二極體 16均包括碗杯161、發光二極體晶片163以及封裝體 165。所述封裝體165由透光材料製成，將發光二極體 晶片163封裝至所述碗杯161内。 所述透鏡18由環氧樹脂、矽樹脂、玻璃等透光材 料製成。該透鏡18設於發光二極體16之上方，其侧 壁與殼體12之侧壁緊密接觸。所述透鏡18之上部呈 圓柱狀，下部呈球冠狀且由透鏡18之上部向下突出， 在透鏡18之上端形成一平面狀之出光面181，並在透 鏡18之下端形成一軸截面為凸弧狀之入光面丨83，所 ‘ 述透鏡18之出光面181與入光面183之間之距離由入 光面183之邊緣沿徑向向入光面183之中心逐漸增 加。所述透鏡18之入光面183與基座14之承載面143 相對，其位於承載面143上方與承載面143間隔一定 距離處，且透鏡18之焦點與承載面143所在球面之中 心F重合。 為使射向殼體12側壁之光線可射向透鏡is之出 光面181，所述殼體12之側壁上位於發光二極體16 上方之部分形成有反射層，以將射向殼體12侧壁之光 8 201000817 Λ .反射向透鏡18之出光面181。所述反射層之材料選自 1呂、銀等具有高反射率之材料，藉由喷塗、蒸鐘、減 射等方法形成於殼體12之側壁上，使所述殼體^ 側壁具有較高之反射率。 所述發光二極體燈具工作時，發光二極體Μ所發 出之-部分光線先射向殼體12之側壁，由反射層反射 後經由透鏡18之入光面183進入透鏡18;而另一部 分光線則直接由透鏡18之入光面183進入透鏡Μ， 進入透鏡18之光線之—部分直接經由透鏡之出光 面181射出，而其餘部分則射向殼體12之側壁，在殼 體12内經-次或多次反射後經由透鏡18之出光面 181沿不同角度射出。 —本實施例中，發光二極體16所發出之光線沿不同 路k進入透鏡18，然後又沿不同路徑由透鏡内射 出，使得最終由透鏡18射出之光線可沿多種不同角度 由不同位置離開透鏡18’避免光線過於集中地由透鏡 18之某一特定區域射出’使光線可均勻分佈於透鏡 之出光面181上，降低了所述發光二極體燈具之炫光 效果。 進一步地，本實施例中，承載面143所在球面之 中。F與透鏡18之焦點重合，使得設於承載面143 上之發光二極體16所發出之一部分光線或經由殼體 12側壁之反射層反射之一部分光線可經過透鏡18之 焦點或焦點附近，從而使該部分光線可經過透鏡18 201000817 之作用由不同位置沿大致平行的方向離開透鏡i8，進 一步降低發光二極體燈具的炫光效果。 本實施例令，承載面143所在球面之中心F與透 鏡18之焦點重合，以達到使光線均勻炫 之效果。當然，承載面143所在球面之中心== 18之焦點間即使存在一定之偏差’例如當承載面 所在之平面球面之中心F位於透鏡18之焦點附近 時，仍會有一部分光線通過透鏡18之焦點或焦點附 近’沿大致平行之方向離開透鏡18。 田一本實施例中，利用在殼體12之側壁上形成反射層 提尚殼體12側壁之反射率，使殼體12之侧壁形成為 高反射率之表面，可以理解地，將殼體12由高反射率 之材料如鋁、銀等製成，並保持殼體12表面適當之光 /月度，亦可使殼體12之侧壁形成為高反射率之表面。 本實施例中，在殼體12之側壁上形成有反射層， 可以理解地，該反射層形成於透鏡18之側壁上，或同 時形成於殼體12之側壁與透鏡18之側壁上，可同樣 起到將射向發光二極體燈具之側壁之光反射向透鏡 18之出光面181之目的。 本實施例中，在基座14之承載面143上設置與基 座14相互獨立之發光二極體16作為光源，如圖2所 不，亦可將發光二極體26直接與承載面243設置為一 體’、具體製造時’先在承載面243上開設均勻分佈於 承載面243上之複數凹槽245,將發光二極體晶片263 201000817 , 置於所述凹槽245内，然後通過封裝製程利用封裝體 265將發光二極體晶片263封裝至所述凹槽245内， r- 從而將發光二極體晶片263固定至承載面243上。 本實施例中，所述基座14安裝於殼體12内，可 以理解地，所述基座亦可與殼體一體成型，如圖2所 示，此種情況下，殼體22底端之厚度較大，承載面 243直接形成於殼體22底端之上表面。 綜上所述，本發明符合發明專利之要件，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，在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。 11 201000817 •【圖式簡單說明】 圖1為本發明發光二極體燈具之一個較佳實施方 式之轴向剖視圖。 圖2為本發明發光二極體燈具之另一較佳實施方 式之軸向剖視圖。 【主要元件符號說明】 殼體 12、22 空腔 121 基座 14 平面 141 承載面 143 、 243 發光二極體 16 > 26 碗杯 161 發光二極體晶片 163、263 封裝體 165 、 265 透鏡 18 出光面 181 入光面 183 凹槽 245 12201000817 IX. Description of the invention: * [Technical field to which the invention pertains] The present invention relates to an optical element, and more particularly to a light-emitting diode lamp. [Prior Art] A conventional light-emitting diode lamp generally includes a casing and a light-emitting diode disposed in the casing, and the light-emitting diode emits a part of the light by making the side wall of the casing into a highly reflective slope. Direct reflection to the light-emitting surface of the light-emitting one-pole lamp to achieve the effect of illumination. However, in the above-mentioned light-emitting diode lamp, the light is reflected by the oblique surface with high reflectivity, so that the light is emitted from the light-emitting surface of the casing only after being reflected by the sidewall of the casing, so that the light is concentrated. A specific area of the illuminating surface is emitted, which produces a glare effect and causes damage to the human eye. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a light-emitting diode lamp that can reduce glare. A light-emitting diode lamp includes a casing, a plurality of light-emitting diodes, and a lens, wherein the light-emitting diodes and the lens are disposed in the casing, and the light-emitting diodes are disposed on a shaft section On the arc-shaped bearing surface, the lens has a light-incident surface with a convex cross-section, and the light-incident surface of the lens is opposite to the bearing surface and spaced apart from each other by a certain distance. 6 201000817 The above-mentioned lens of the light-emitting diode lamp has an arc-shaped entrance surface and a two-arc-shaped bearing surface and the light-emitting diode and the light-incident surface are spaced apart from each other by an A on the bearing surface «Α ^ ^ ^疋The distance between the light-emitting diodes and the path of the light-emitting diodes enters the lens along the path of different 丨 拽〆 然 然 然 然 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Lens, to avoid the light is too concentrated, a special macro of the lens will shoot out the & field, so that the light can be evenly distributed on the light surface of the lens, the uw work is low; 4 light-emitting diode lamps Glare effect. [Embodiment] Hereinafter, embodiments of the present invention will be further described in detail with reference to the drawings. Referring to Fig. 1, a light-emitting diode lamp of the present invention comprises a casing 12 and a base 14 disposed in the casing 12, a plurality of light-emitting diodes 16 and a lens 18. The housing 12 has a cylindrical shape with a top end open, a bottom end closed, and a cavity 121 formed inside the housing 12. The base 14 is disposed in the cavity 121 of the housing 12 and is in contact with the bottom end of the housing U. The base 14 is generally cylindrical and has a flat end 141 at its bottom end. The upper surface of the base 14 is recessed downwardly, and a spherical crown-shaped bearing surface 143 is formed at the top end of the base 14. The bearing surface 143 has a concave arc-shaped cross section. The distance between the bearing surface 143 and the opposite bottom surface is gradually reduced by the edge of the bearing surface 14 3 along the center of the 2010 7017 from the bearing surface 14 3 . The light-emitting diode 16 includes a plurality of columns of light-emitting diodes uniformly distributed on the bearing surface 143 (only the axis along the bearing surface 14 3 is shown in the axial cross-sectional view shown in FIG. An array of light-emitting diodes 16) is arranged such that a portion of the light emitted by each of the light-emitting diodes 16 can pass through the center F of the spherical surface of the bearing surface 143. Each of the light-emitting diodes 16 includes a bowl 161, a light-emitting diode wafer 163, and a package 165. The package body 165 is made of a light transmissive material, and the light emitting diode wafer 163 is packaged into the cup 161. The lens 18 is made of a light transmissive material such as epoxy resin, enamel resin, or glass. The lens 18 is disposed above the light emitting diode 16 with its side walls in close contact with the side walls of the housing 12. The upper portion of the lens 18 has a cylindrical shape, the lower portion is spherical and protrudes downward from the upper portion of the lens 18. A planar light-emitting surface 181 is formed at the upper end of the lens 18, and a convex portion is formed at the lower end of the lens 18. The distance between the light-emitting surface 181 of the lens 18 and the light-incident surface 183 is gradually increased from the edge of the light-incident surface 183 toward the center of the light-incident surface 183 in the radial direction. The light incident surface 183 of the lens 18 is opposite to the bearing surface 143 of the susceptor 14, and is located at a distance from the bearing surface 143 above the bearing surface 143, and the focal point of the lens 18 coincides with the spherical center F of the bearing surface 143. In order to make the light directed to the side wall of the casing 12 to be directed to the light exit surface 181 of the lens is, a portion of the side wall of the casing 12 above the light emitting diode 16 is formed with a reflective layer to be directed toward the side of the casing 12. Wall Light 8 201000817 Λ Reflected toward the light exit surface 181 of the lens 18. The material of the reflective layer is selected from materials having high reflectivity such as 1 Å, silver, etc., and is formed on the sidewall of the casing 12 by spraying, steaming, and reducing, so that the sidewall of the casing has a relatively high High reflectivity. When the LED device is in operation, part of the light emitted by the LED is first directed to the sidewall of the housing 12, reflected by the reflective layer, and then enters the lens 18 via the light incident surface 183 of the lens 18; The light enters the lens 直接 directly from the light incident surface 183 of the lens 18, and the light entering the lens 18 is directly emitted through the light exit surface 181 of the lens, and the remaining portion is incident on the sidewall of the housing 12, and is passed through the housing 12 in the housing 12. After two or more reflections, the light exit surface 181 of the lens 18 is emitted at different angles. In this embodiment, the light emitted by the LEDs 16 enters the lens 18 along different paths k, and then is emitted from the lens along different paths, so that the light finally emitted by the lens 18 can be separated from different positions along a plurality of different angles. The lens 18' prevents the light from being emitted from a specific area of the lens 18 in a concentrated manner, so that the light can be evenly distributed on the light-emitting surface 181 of the lens, which reduces the glare effect of the light-emitting diode lamp. Further, in this embodiment, the bearing surface 143 is located in the spherical surface. F coincides with the focus of the lens 18, such that a portion of the light emitted by the light-emitting diode 16 disposed on the carrying surface 143 or a portion of the light reflected by the reflective layer of the sidewall of the housing 12 can pass through the focus or focus of the lens 18, thereby The portion of the light can exit the lens i8 in a substantially parallel direction from different positions through the action of the lens 18 201000817, further reducing the glare effect of the light-emitting diode lamp. In this embodiment, the center F of the spherical surface on which the bearing surface 143 is located coincides with the focus of the lens 18 to achieve the effect of evenly illuminating the light. Of course, even if there is a certain deviation between the centers of the spherical surfaces of the bearing surface 143 == 18, for example, when the center F of the plane spherical surface where the bearing surface is located is located near the focus of the lens 18, a part of the light passes through the focus of the lens 18. Or near the focus 'away from the lens 18 in a generally parallel direction. In the present embodiment, the reflective layer is formed on the sidewall of the casing 12 to improve the reflectivity of the sidewall of the casing 12, so that the sidewall of the casing 12 is formed into a surface having a high reflectivity. 12 is made of a highly reflective material such as aluminum, silver, or the like, and maintains a proper light/month of the surface of the casing 12, and the side walls of the casing 12 may be formed as a highly reflective surface. In this embodiment, a reflective layer is formed on the sidewall of the housing 12. It is understood that the reflective layer is formed on the sidewall of the lens 18 or simultaneously formed on the sidewall of the housing 12 and the sidewall of the lens 18. The purpose of reflecting the light directed to the side wall of the light-emitting diode lamp to the light-emitting surface 181 of the lens 18 is achieved. In this embodiment, the light-emitting diode 16 independent of the susceptor 14 is disposed on the bearing surface 143 of the susceptor 14 as a light source. As shown in FIG. 2, the light-emitting diode 26 may be directly disposed on the bearing surface 243. As a whole, in the specific manufacturing, a plurality of grooves 245 uniformly distributed on the bearing surface 243 are formed on the bearing surface 243, and the LED film 263 201000817 is placed in the groove 245, and then passed through a packaging process. The light emitting diode wafer 263 is encapsulated into the recess 245 by the package 265, thereby rifying the light emitting diode wafer 263 to the carrying surface 243. In this embodiment, the base 14 is mounted in the housing 12. It can be understood that the base can also be integrally formed with the housing, as shown in FIG. 2, in this case, the bottom end of the housing 22 The thickness is large, and the bearing surface 243 is formed directly on the upper surface of the bottom end of the casing 22. In summary, the present invention complies with the requirements of the invention patent, and proposes a patent application according to law. 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 included in the following claims. 11 201000817 • [Simplified illustration of the drawings] Fig. 1 is an axial cross-sectional view showing a preferred embodiment of the light-emitting diode lamp of the present invention. Fig. 2 is an axial cross-sectional view showing another preferred embodiment of the light-emitting diode lamp of the present invention. [Description of main component symbols] Housing 12, 22 Cavity 121 Base 14 Plane 141 Bearing surface 143, 243 Light-emitting diode 16 > 26 Cup 161 Light-emitting diode wafer 163, 263 Package 165, 265 Lens 18 Light-emitting surface 181 light-in surface 183 groove 245 12