201111702 六、發明說明： 【發明所屬之技術領域】 本案係關於一種照明單元，尤指一種發光二極體照明 單元。 【先前技術】 近年來由於發光一極體(Light Emitting Di〇de，LED)製 造技術的突破’使得發光二極徵的發光亮度及發光效率大 春喊升，且發光二極體具有耗電量低、發熱量低及使用壽 命長等優點，符合環保節能的越勢，因而使得發光二極體 逐漸取代傳統的白熾燈泡而成為新的照明元件，並廣泛地 應用於路面照明裝置、豕用照明裝置、車用照明裝置、手 持照明裝置、液晶面板背光源、交通號誌指示燈、指示看 板、或其他電子產品之輔助照明裝置等。 在路面照明應用中，路燈的作用主要在提供夜間照 φ明，而傳統的路燈由於整體光效低，造成了能源的巨大浪 費，因此，將原本的傳統式路燈更換成發光二極體路燈已 是目前各國執行節能減碳的重點方法之一。而由於路燈的 麟明效果會影響用路者的夜間視線，因此，為了保護用路 |的仪間用路安全，各國政府亦對發光二極體路燈之照度 進行規範，要求在一段距離内照度足夠且燈光投射範圍要 能涵蓋具特定長寬比的矩形區域。 然而，由於發光二極體係由正面的聚光點發出亮光， 其亮光成圓形分佈、發散角小，所以其亮光所產生的光束 201111702 投射範圍較小，不利於大面積的照射範圍，使得發光二極 體路燈所發出的亮光會集中在鄰近路燈的範圍，造成路燈 只能照近不照遠，無法提供道路足夠且均勻的照明，因而 影響了用路人的安全。 因此，如何擴大發光二極體路燈發出的光束照射範 圍，使發光二極體路燈提供均勻的照明，並符合路燈照度 規範，為本領域之人士所一直努力研發改進的方向。 *【發明内容】 本案之主要目的在於提供一種發光二極體照明單 元，及由該發光二極體照明單元所構成之發光二極體路 燈，其可補償燈桿遠端處之光線照度，有效提高路燈對路 面照明之亮度及均勻度，進而提升用路人的安全。 為達上述目的，本案之一較廣義實施態樣為提供一種 發光二極體照明單元，包含一發光二極體元件，用以產生 Φ 一光線，以及一透鏡元件，係蓋設於該發光二極體元件 上，用以調整該光線之發散方向。該透鏡元件包含一基 板、一透光部及一容置槽，該透光部係突出於該基板且其 外表面為一非對稱單一曲面，該容置槽係設置於該基板及 該透光部之中，用以容置該發光二極體元件。該發光二極 體元件係偏離該透光部之中軸而設置，且該曲面於靠近該 發光二極體元件之一側具有相對較小之曲率半徑，俾使該 光線發散至遠處。 本案之另一較廣義實施態樣為提供一種發光二極體^ 201111702 路燈，包含一燈桿、一燈座及至少一設置於該燈座上之發 光二極體照明單元。該發光二極體照明單元包含一發光二 極體元件，用以產生一光線，以及一透鏡元件，係蓋設於 該發光二極體元件上，用以調整該光線之發散方向。該透 鏡元件包含一基板、一透光部及一容置槽，該透光部係突 出於該基板且其外表面為一非對稱單一曲面，該容置槽係 設置於該基板及該透光部之中，用以容置該發光二極體元 件。該發光二極體元件係偏離該透光部之中軸而設置，且 ® 該曲面於靠近該發光二極體元件之一側具有相對較小之 曲率半徑，俾使該光線發散至燈桿遠端處。 【實施方式】 體現本案特徵與優點的一些典型實施例將在後段的 說明中詳細敘述。應理解的是本案能夠在不同的態樣上具 有各種的變化，其皆不脫離本案的範圍，且其中的說明及 Φ 圖示在本質上係當作說明之用，而非用以限制本案。 本案係提供一種發光二極體照明單元，其主要應用於 路面照明，例如路燈，但不以此為限。請參閱第一圖，其 係為本案較佳實施例之發光二極體路燈之示意圖。如圖所 示，本案之發光二極體路燈包含一燈桿10、一燈座20及 一發光二極體照明單元30，其中，該燈桿10之下端係固 定於道路兩旁，上端則延伸至一預定高度，且可朝路面中 央彎折一預定角度。該燈座20係設置於該燈桿10之上 端，而該發光二極體照明單元30則設置於該燈座20上、 201111702 且包含一發光二極體元件31及一透鏡元件32，該發光二 極體元件31係用以產生一光線，該透鏡元件32係蓋設於 該發光二極體元件31上，用以調整該光線之發散方向。 在第一圖中，該燈座20上係以設置一個發光二極體 照明單元30為例來做說明，然而該燈座20上所設置的發 光二極體照明單元30之數目並不限於一個，且較佳為包 含以陣列形式排列之複數個發光二極體照明單元3〇，藉以 提高路燈之照度。 〇月參閱第一至四圖，其中第二圖係為本案發光二極體 照明單元之立體示意圖，第三圖為第二圖之Α·Α剖面圖， 第四圖則為第二圖之Β-Β剖面圖。如圖所示，該發光二極 體兀件31主要包含一發光二極體311及一透鏡312，由於 該發光二極體元件31之結構及相配合之電路設計並不限 制’可依不同需求而婦，且料設計係可湘習知技術 而達成，故於此不再贅述。201111702 VI. Description of the invention: [Technical field to which the invention pertains] The present invention relates to a lighting unit, and more particularly to a lighting diode lighting unit. [Prior Art] In recent years, due to the breakthrough in the manufacturing technology of Light Emitting Diodes (LED), the luminance and luminous efficiency of the illuminating dipole sign have risen in the spring, and the light-emitting diode has power consumption. The advantages of low heat, low heat generation and long service life are in line with the trend of environmental protection and energy saving. Therefore, the light-emitting diode gradually replaces the traditional incandescent bulb and becomes a new lighting component, and is widely used in road lighting and lighting. Devices, automotive lighting devices, hand-held lighting devices, LCD panel backlights, traffic sign lights, indicator boards, or other auxiliary lighting devices for electronic products. In the application of road lighting, the role of street lamps is mainly to provide nighttime illumination, while the traditional street lamps have a huge waste of energy due to the low overall light efficiency. Therefore, the replacement of the original traditional street lamps into the LED street lamps has been It is currently one of the key ways for countries to implement energy conservation and carbon reduction. Because the Linming effect of street lamps will affect the night vision of the users, in order to protect the safety of the roads used by the roads, the governments of various countries also regulate the illumination of the LED street lamps, requiring illumination within a certain distance. Sufficient and the range of light projection should cover a rectangular area with a specific aspect ratio. However, since the illuminating dipole system emits bright light from the front condensing point, the illuminating light has a circular distribution and a small divergence angle, so that the light beam 201111702 has a small projection range, which is disadvantageous for a large area of illumination, so that the illuminating The light emitted by the diode streetlights will be concentrated in the vicinity of the streetlights, causing the streetlights to be close to the distance and unable to provide sufficient and uniform illumination of the roads, thus affecting the safety of passers-by. Therefore, how to expand the beam illumination range emitted by the LED street lamp, to provide uniform illumination of the LED street lamp, and to meet the street lamp illumination specifications, has been an effort to develop and improve the direction of the people in the field. * [Invention] The main purpose of the present invention is to provide a light-emitting diode lighting unit and a light-emitting diode street lamp composed of the light-emitting diode lighting unit, which can compensate the light illumination at the distal end of the light pole, and is effective Improve the brightness and uniformity of street lighting on the road surface, thereby improving the safety of passers-by. In order to achieve the above object, a broader aspect of the present invention provides a light emitting diode illumination unit comprising a light emitting diode element for generating Φ a light, and a lens element disposed on the light emitting diode The polar body element is used to adjust the divergence direction of the light. The lens element comprises a substrate, a light transmitting portion and a receiving groove, wherein the light transmitting portion protrudes from the substrate and the outer surface thereof is an asymmetric single curved surface, and the receiving groove is disposed on the substrate and the light transmission In the part, the light emitting diode element is accommodated. The light emitting diode element is disposed away from the axis of the light transmitting portion, and the curved surface has a relatively small radius of curvature on a side close to the light emitting diode element, so that the light is diverged to a distant place. Another broad aspect of the present invention provides a light-emitting diode (201111702) street lamp comprising a light pole, a lamp holder and at least one light-emitting diode lighting unit disposed on the lamp holder. The LED illumination unit includes a light emitting diode component for generating a light, and a lens component is disposed on the LED component for adjusting a diverging direction of the light. The lens element comprises a substrate, a light transmitting portion and a receiving groove, wherein the light transmitting portion protrudes from the substrate and the outer surface thereof is an asymmetric single curved surface, and the receiving groove is disposed on the substrate and the light transmission In the part, the light emitting diode element is accommodated. The light emitting diode element is disposed away from the axis of the light transmitting portion, and the curved surface has a relatively small radius of curvature on a side close to the light emitting diode element, so that the light is diverged to the distal end of the light pole. At the office. [Embodiment] Some exemplary embodiments embodying the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention is capable of various modifications in various embodiments and is not intended to limit the scope of the invention. The present invention provides a light-emitting diode lighting unit, which is mainly applied to road lighting, such as street lamps, but is not limited thereto. Please refer to the first figure, which is a schematic diagram of a light-emitting diode street lamp according to a preferred embodiment of the present invention. As shown in the figure, the light-emitting diode street lamp of the present invention comprises a light pole 10, a lamp holder 20 and a light-emitting diode lighting unit 30, wherein the lower end of the light pole 10 is fixed on both sides of the road, and the upper end extends to A predetermined height and can be bent a predetermined angle toward the center of the road surface. The lamp holder 20 is disposed on the upper end of the lamp post 10, and the LED device 30 is disposed on the lamp holder 20, 201111702, and includes a light emitting diode element 31 and a lens element 32. The diode element 31 is used to generate a light, and the lens element 32 is disposed on the LED element 31 for adjusting the diverging direction of the light. In the first figure, the lamp holder 20 is exemplified by providing a light-emitting diode illumination unit 30. However, the number of the light-emitting diode illumination units 30 disposed on the socket 20 is not limited to one. And preferably comprising a plurality of light emitting diode lighting units 3 arranged in an array form to improve the illumination of the street light. See the first to fourth figures for the month, the second picture is a three-dimensional diagram of the lighting diode of the case, the third picture is the Α·Α section of the second picture, and the fourth picture is the second picture. - Β section view. As shown in the figure, the LED device 31 mainly includes a light-emitting diode 311 and a lens 312. The structure of the LED component 31 and the matching circuit design are not limited to different requirements. The women and materials design department can be reached by the Chinese learned technology, so it will not be repeated here.
該透鏡元件32主要包含一基板32卜一透光部322 ^ 一容置槽323，該基板321係大致成矩形，且可固定於春 燈座20之上’該透光部322係突出於該基板32ι且其夕| 表面為一非對稱單一曲面3220，其中該曲面3220之設言·ί 曲率可為糖圓曲線或其他不規則曲線，藉由該曲面322( ^非對稱設計，使得該透光部322呈-非對稱結構，而該 今置槽323係設置於該基板321及該透光部奶之令用 以容置該發光二極體元件31。 根據本案之較佳實施例，該發光二極體元件Η係偏 201111702 離該透光部322之中軸Μ而設置，且該曲面3220於靠近 該發光二極體元件31之一側具有相對較小之曲率半徑。 如第三圖所示，該發光二極體元件31係偏離該透光部322 之中軸Μ而設置在該中軸Μ之右側，同樣地，該曲面3220 亦在對應該發光二極體元件31所設置之右側具有相對較 小之曲率半徑，且可從圖中看出，該曲面3220之凸點Τ 即對應形成於右側，換言之，該透光部322之凸部係形成 於對應該發光二極體元件31所設位置之同一側。 在一實施例中，該透光部322之剖面大致成矩形，且 該曲面3220在該矩形之長轴方向上具有前述之曲率變 化，該發光二極體元件31亦在該矩形之長軸方向上成偏 軸設置。藉由此矩形設計，可使得本案之發光二極體照明 單元符合燈光投射範圍要能涵蓋具特定長寬比的矩形區 域之路燈照度規範。 另一方面，該容置槽323於該基板321及該透光部322 中亦偏一側設置，使容置於該容置槽323中之該發光二極 體元件31可偏離該透光部32之中轴Μ而設置。此外，如 第四圖所示，該容置槽323之頂面3230為向上突出之圓 弧面，除可協助調整光線之發散方向外，亦可藉此降低透 鏡元件32之厚度，使透鏡元件32之體積減小。舉例而言， 透鏡元件32之基板321長度約為20mm，整個透鏡元件 32之高度約為7.5mm，當然前述尺寸可依需求調整而不受 限。 在一實施例中，該容置槽323之剖面大致成矩形，且 201111702 其長轴方向與透光部322之長軸方向一致，但不以此為限。 請再參閱第一圖，由於本案之發光二極體照明單元30 具非對稱之結構，其中該發光二極體元件31係偏離該透 鏡元件32的透光部322之中軸Μ而設置，且透光部322 之曲面3220於靠近該發光二極體元件31之一側具有相對 較小之曲率半徑，使得自發光二極體元件31發出的光線 經二次折射穿透該透光部322後，可發散至燈桿10遠端 處之路面（如第一圖之光跡所示），不但可促使有效面積 ® (所需照射的路面）光能量的提升，更可補償燈桿10遠 端處之光線照度，藉此提升照度均勻度，以避免道路中央 因遠離燈桿10而無法獲得充足的照明所引發的用路安全 問題。因此，藉由本案發光二極體照明單元30之非對稱 結構設計，可有效提高路燈對路面照明之亮度及均勻度， 進而提升用路人的安全。 在一實施例中，該透鏡元件32係為一體成型，且由 φ 高透光材質所製成，例如但不限於塑膠材質。 請參閱第五圖，其係為透鏡元件之模組化設計示意 圖。由於本案之透鏡元件32具有平凸外形之平面式設計， 因此可直接將複數個透鏡元件32以陣列排列的方式進行 開模及製造，其中各透鏡元件32之基板321相連，透光 部322則分別突出於該基板321之上，如此一來，不但可 加速製程，更可降低製造成本。當然，進行模組化製造之 透鏡元件的個數及排列方式可依需求而變換，並不受限於 第五圖所示實施例，更可直接配合裝設於燈座上之型式來 201111702 設計，使製造出透鏡元件組直接與發光二極體元件一起裝 設於燈座上。 綜上所述，本案主要係提供一種發光二極體照明單元 及由該發光二極體照明單元所構成之發光二極體路燈，其 中該發光二極體照明單元之發光二極體元件成偏軸設 置，透鏡元件具單一非對稱曲面，且該曲面於靠近該發光 二極體元件之一側具有相對較小之曲率半徑，使得自發光 二極體元件發出的光線經透鏡元件之作用向燈桿遠端路 • 面偏折，以補償燈桿遠端處之光線照度，有效提高路燈對 路面照明之亮度及均勻度，進而提升用路人的安全。是 以，本案之發光二極體照明單元可改善習知技術之缺失並 增進照明效果，故極具產業之價值，且符合各項專利要 件，爰依法提出申請。 本案得由熟知此技術之人士任施匠思而為諸般修 飾，然皆不脫如附申請專利範圍所欲保護者。 201111702 【圖式簡單說明】 第一圖··其係為本案較佳實施例之發光二極體路燈之示意 圖。 第一圖.其係為本案發光二極體照明單元之立體示意圖。 第二圖：其係為第二圖之A_ a剖面圖。 第四圖··其係為第二圖之b_b剖面圖。 第五圖：其係為透鏡元件之模組化設計示意圖。 【主要元件符號說明】 20 :燈座 31 :發光二極體元件 312 :透鏡 321 :基板 3220 :曲面 3230 :頂面 Τ :曲面之凸點 10 :燈桿 30 :發光二極體照明單元 311 :發光二極體 32 _·透鏡元件 322 :透光部 323:容置槽 Μ .透光部之中軸The lens element 32 mainly includes a substrate 32, a transparent portion 322, a receiving groove 323, and the substrate 321 is substantially rectangular and can be fixed on the spring seat 20. The light transmitting portion 322 protrudes from the The surface of the substrate 32i is an asymmetric single curved surface 3220, wherein the curved surface of the curved surface 3220 can be a sugar circle curve or other irregular curve, and the curved surface 322 (^ asymmetric design makes the transparent The light portion 322 has an asymmetrical structure, and the current groove 323 is disposed on the substrate 321 and the light transmissive portion for accommodating the light emitting diode element 31. According to a preferred embodiment of the present invention, The light-emitting diode element 2011 is biased toward the axis of the light-transmitting portion 322, and the curved surface 3220 has a relatively small radius of curvature on a side close to the light-emitting diode element 31. As shown in the third figure The light-emitting diode element 31 is disposed on the right side of the central axis 偏离 from the axis of the light-transmitting portion 322. Similarly, the curved surface 3220 is also opposite to the right side of the light-emitting diode element 31. a smaller radius of curvature, as can be seen from the figure, the surface The bumps of 3220 are correspondingly formed on the right side, in other words, the convex portions of the light transmitting portion 322 are formed on the same side corresponding to the positions where the light emitting diode elements 31 are disposed. In an embodiment, the light transmitting portions 322 The cross section is substantially rectangular, and the curved surface 3220 has the aforementioned curvature change in the long axis direction of the rectangle, and the light emitting diode element 31 is also disposed off-axis in the long axis direction of the rectangle. The illuminating diode illuminating unit of the present invention can conform to the illuminance specification of the illuminating area of the rectangular area having a specific aspect ratio according to the range of the light projection. On the other hand, the accommodating groove 323 is on the substrate 321 and the transparent portion 322. The light-emitting diode element 31 accommodated in the accommodating groove 323 can be disposed away from the axis of the light-transmitting portion 32. Further, as shown in the fourth figure, the capacity is set. The top surface 3230 of the groove 323 is an upwardly projecting circular arc surface. In addition to assisting in adjusting the diverging direction of the light, the thickness of the lens element 32 can be reduced to reduce the volume of the lens element 32. For example, the lens The length of the substrate 321 of the component 32 is about 2 0mm, the height of the entire lens element 32 is about 7.5mm, of course, the foregoing dimensions can be adjusted according to requirements without limitation. In an embodiment, the accommodating groove 323 has a substantially rectangular cross section, and the long axis direction of the 201111702 is transparent. The long axis direction of the light portion 322 is the same, but not limited thereto. Referring to the first figure, since the light emitting diode illumination unit 30 of the present invention has an asymmetric structure, the light emitting diode element 31 deviates from the The light transmitting portion 322 of the lens element 32 is disposed axially, and the curved surface 3220 of the light transmitting portion 322 has a relatively small radius of curvature near one side of the light emitting diode element 31, so that the self-luminous diode element 31 The emitted light passes through the light transmissive portion 322 after being twice refracted, and can be radiated to the road surface at the distal end of the lamp post 10 (as shown by the light trace in the first figure), which not only promotes the effective area® (required irradiation) The improvement of the light energy of the road surface can compensate the illuminance of the light at the distal end of the lamp post 10, thereby improving the uniformity of illumination to avoid the safety problem of the road caused by the lack of sufficient illumination in the center of the road due to the distance from the lamp post 10. Therefore, the asymmetric structure design of the illumination diode unit 30 of the present invention can effectively improve the brightness and uniformity of the street lamp to the road surface illumination, thereby improving the safety of the passers-by. In one embodiment, the lens element 32 is integrally formed and made of φ high light transmissive material such as, but not limited to, a plastic material. Please refer to the fifth figure, which is a schematic diagram of the modular design of the lens element. Since the lens element 32 of the present invention has a planar design with a flat convex shape, the plurality of lens elements 32 can be directly opened and fabricated in an array arrangement, wherein the substrate 321 of each lens element 32 is connected, and the light transmitting portion 322 is connected. They protrude above the substrate 321, respectively, so that not only the process can be accelerated, but also the manufacturing cost can be reduced. Of course, the number and arrangement of the lens elements that are modularly manufactured can be changed according to requirements, and are not limited to the embodiment shown in FIG. 5, and can be directly matched with the type installed on the lamp holder to design 201111702. The lens element group is fabricated directly on the lamp holder together with the light emitting diode element. In summary, the present invention mainly provides a light-emitting diode lighting unit and a light-emitting diode street lamp composed of the light-emitting diode lighting unit, wherein the light-emitting diode component of the light-emitting diode lighting unit is biased The shaft is disposed, the lens element has a single asymmetric curved surface, and the curved surface has a relatively small radius of curvature near one side of the light emitting diode element, so that the light emitted from the light emitting diode element acts on the light through the lens element The distal end of the rod • The surface is deflected to compensate for the illuminance of the light at the far end of the pole, which effectively improves the brightness and uniformity of the street lighting on the road surface, thereby improving the safety of passers-by. Yes, the light-emitting diode lighting unit of this case can improve the lack of conventional technology and enhance the lighting effect. Therefore, it has great industrial value and meets various patent requirements. This case has been modified by people who are familiar with the technology, but it is not intended to be protected by the scope of the patent application. 201111702 [Simplified description of the drawings] Fig. 1 is a schematic view of a light-emitting diode street lamp of a preferred embodiment of the present invention. The first figure is a three-dimensional schematic diagram of the illumination unit of the present invention. Second figure: It is a cross-sectional view of A_a of the second figure. The fourth figure is a cross-sectional view of the b_b of the second figure. Figure 5: It is a schematic diagram of the modular design of the lens elements. [Main component symbol description] 20: Lamp holder 31: Light-emitting diode element 312: Lens 321: Substrate 3220: Curved surface 3230: Top surface Τ: Curved bump 10: Light pole 30: Light-emitting diode illumination unit 311: Light-emitting diode 32 _·Lens element 322 : Light-transmitting portion 323 : accommodating groove 之中