M340396 八、新型說明： 【新型所屬之技術領域】 本創作係提供一種照明裝置，尤指一種用以提供道路 照明的路燈。 【先前技術】 相較於其他光源而言，發光二極體具有顯著的節能優 勢，使其可廣泛地應用於各種照明裝置上，其中最受矚目 的應用之一’就是在夜間提供道路照明的路燈。 由於路燈的照明特性會影響用路者在夜間的視線，因 此各國政府皆對路燈的照度及其均勻度制定有相關規範， 以保護用路者的用路安全。 然而，相較於傳統光源來說，發光二極體固有的之光 線發散角較小，以致於應用於路燈時，其所發出的光線會 集中在路燈鄰近處，造成路燈在遠離處與鄰近處之照度差 異過大，無法提供道路均勾的照明。 因此，如何改善路燈在遠離處與鄰近處的照度均勻 性’以符合上述照度規範的要求，提供道路均勾的照明光 線，已成為各業者的一個重要課題。 【新型内容】 本創作之-目的，在於提供一種可提供道路均勾照明 之路燈，可使路燈在遠離處與鄰近處的照度大致均勻。 為達上述目的，本創作提供一種可提供道路均勾照明 之路;k包3燈桿、一燈座，以及複數光源單元 設置於該燈桿上端。該等光源單元設置於該燈座之底面 5 M340396 上，且各包含一電路板、複數個設置於該電路板上的發光 :極體’以及至少—設置於該電路板上且蓋設至少一發光 :極體之透鏡元件，其中，該透鏡元件包含至少一面朝該 fx光一極體且用以折射該發光二極體所發出之光線的屈光 肚且η亥屈光體的光軸是以-預定距離偏離於該發光二極 體的光軸。 ， 本創作藉由該透鏡元件之屈光體擴大發光二極體之光 -線發散角，並藉屈光體的光軸偏離發光二極體的光轴，使 •照度呈現非對稱分佈，以改善路燈在鄰近處與遠離處之照 度均勻性。 【實施方式】 有關本創作之技術内容，在以下配合參考圖式之一較 佳實施例中，將可清楚的說明： 如第一圖所示，本創作之一較佳實施例的可提供道路 均勻照明之路燈主要包含一燈桿10、一設置於該燈桿上 _、端部的燈座20，以及複數設置於該燈座20底面之光源單元 30。 該燈桿10下部可固定於道路之路面上（圖未示），或 是固定於道路兩侧之建物（圖未示）上，以將燈座20相對 路面支撐於一預定高度之上。而燈桿10上部則傾斜地彎折 並朝一預定方向延伸。為便於後續之說明，將該預定方向 定義為第一方向X，並將第一方向X之垂直方向定義為第 二方向Υ。 該燈座20為鋁或銅等導熱性佳之金屬材質所製成，並 M340396 以其側連接於該燈桿10之上端部。該燈座2〇具有一形成 於其底面上並供該等光源單元30設置之凹槽21。 如第一圖及第二圖所示，各該光源單元3〇包含一電路 板31複數個$又置於該電路板31上的發光二極體32，以及 至少一设置於該電路板31上且蓋設複數個發光二極體％之 透鏡件33。本實施例中，透鏡元件33之數量以四個為 例，實際實施則不以此限。 ” 該等電路板31之形狀概呈長條形，且相互平行地分別 鎖固於該燈座2G之凹槽21内。各該發光二極體32為表面黏 著（surfacemounted)封裝型式之發光二極體，且包含有一面 向該透鏡元件33之透鏡321 。 各該透鏡元件33大致呈一矩形板狀，且為透光塑膠材 貝所製成。各該透鏡元件33包含一設置於該電路板耵上之 支撐體331 ，以及複數個受該支撐體331支撐而對應位於 該等發光二極體32上方之屈光體332。在本實施例中，該 φ透鏡元件33為塑膠射出且為一體成型，實際實施時則不= 此限。此外，圖中各該透鏡元件33之屈光體332數量以四 —個為例，實際實施時之數量可為一個或是一個以上。 如第二圖及第三圖所示，詳細來說，為了擴大發光二 極體32所發出之光線發散角，該等屈光體332具有一中央 凹陷部333 ，以及一圍繞該中央凹陷部333之外環突出部 334 由屈光體底面入射之光線可經過屈光體幻2的 作用而向周圍擴散，達到擴大光線發散角的功效。 進一步地，為了使路燈之遠離處與鄰近處的照度接近 M340396 一致，以提供道路均勻的照明，本創作將該等屈光體332 的光軸335是沿該第一方向又偏離於該等發光二極體幻的 光軸322，更具體地來說，該等屈光體刃2的光軸幻5是 以-預定距離沿該第一方向χ偏離於該等發光二極體％之 透鏡321的光軸322。 藉此，如第四圖所示，圖中虛線為本創作之路燈在第 /方向X上之各角度的照度分佈曲線，可看出光線發散角 又屈光體332之作用而擴大為12〇度（_6〇度至度）。 亚^ ’更可看出照度分佈呈現一非對稱分佈，在〇至⑼度 的，圍之照度明顯#_6〇至〇度的範圍之照度為大’代表 在第方向X上之遠離路燈處的照度大於鄰近路燈處的照 度’可藉以補償習知路燈在遠離路燈處之照度較低的情 況。 ”圖中實線則為本創作之路燈在第二方向γ上之各角度 ’、又刀佈曲線，可看出此方向之光線發散角亦受屈光體 332之作用擴大為12〇度（_6〇度至+6〇度）。 —在本實施例中，各該屈光體332之的光軸335皆以一 預疋距離沿該第—方向χ同向地偏離於該等發光二極體μ 之透^ 321的光軸322。然而實際實施時，則不以此限， 可視實際情況調整’使預定數量之屈光體332的光軸335 偏離其所對應之發光二極體32的光軸322。 义‘上所述，本創作藉由該透鏡元件33之屈光體332擴 大發光二極體32之光線發散角，並藉屈光體332的光軸、 奶偏離發光二極體32的光軸322，使照度分佈呈現非對 M340396 稱分佈，達到改善路燈在鄰近處與遠離處 ,^ …復均勻性的 功效。 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】 第一圖為本創作之路燈的示意圖。 第二圖為本創作之路燈之光源單元的示意圖。 第三圖為本創作之路燈之光源單元的剖視圖。 第四圖為本創作之路燈之照度分佈曲線圖。 【主要元件符號說明】 10燈杯 20燈座 21凹槽 30光源單元 31電路板32發光二極體 321透鏡 322光軸 33透鏡元件 331支撐體 332屈光體 333中央凹陷部 334外環突出部 335光軸M340396 VIII. New description: [New technical field] This creation provides a lighting device, especially a street lamp for providing road lighting. [Prior Art] Compared with other light sources, the light-emitting diode has significant energy-saving advantages, making it widely applicable to various lighting devices. One of the most attractive applications is to provide road lighting at night. Street light. Since the lighting characteristics of street lamps affect the sight of the road users at night, governments of all countries have established regulations on the illumination and uniformity of street lamps to protect the safety of road users. However, compared with the conventional light source, the light divergence angle inherent in the light-emitting diode is small, so that when applied to a street light, the light emitted by the light-emitting diode is concentrated in the vicinity of the street light, causing the street light to be away from and adjacent to the street light. The difference in illumination is too large to provide illumination for the road. Therefore, how to improve the illumination uniformity of the street lamp at a distance from the vicinity to meet the requirements of the above illumination specification and provide illumination light for the road hook has become an important issue for various industries. [New Content] The purpose of this creation is to provide a street light that can provide road hook lighting, which can make the illumination of the street lamp far away from the vicinity and the vicinity. In order to achieve the above purpose, the present invention provides a road for providing road hook lighting; a k-pack 3 lamp post, a lamp holder, and a plurality of light source units are disposed at the upper end of the lamp post. The light source units are disposed on the bottom surface 5 M340396 of the lamp holder, and each comprises a circuit board, and a plurality of light emitting electrodes disposed on the circuit board: and at least - disposed on the circuit board and covered with at least one Illuminating: a lens element of a polar body, wherein the lens element comprises at least one surface facing the fx light body and refracting a refractive light of the light emitted by the light emitting diode; and the optical axis of the n-yellow refractive body is The predetermined distance is offset from the optical axis of the light emitting diode. The present invention expands the light-line divergence angle of the light-emitting diode by the refractive body of the lens element, and the optical axis of the refractive body deviates from the optical axis of the light-emitting diode, so that the illumination is asymmetrically distributed. Improve the uniformity of illumination of street lights in and out of the street. [Embodiment] The technical content of the present invention will be clearly explained in the following preferred embodiments with reference to the following drawings: As shown in the first figure, a preferred embodiment of the present invention can provide a road. The uniform illumination street lamp mainly comprises a light pole 10, a lamp holder 20 disposed on the lamp post, and a plurality of light source units 30 disposed on the bottom surface of the lamp holder 20. The lower portion of the light pole 10 can be fixed on the road surface (not shown) or fixed on the sides of the road (not shown) to support the lamp holder 20 above the predetermined height relative to the road surface. The upper portion of the pole 10 is bent obliquely and extends in a predetermined direction. For the convenience of the following description, the predetermined direction is defined as the first direction X, and the vertical direction of the first direction X is defined as the second direction Υ. The lamp holder 20 is made of a metal material having good thermal conductivity such as aluminum or copper, and the M340396 is connected to the upper end portion of the lamp post 10 with its side. The socket 2 has a recess 21 formed on the bottom surface thereof for the light source units 30. As shown in the first and second figures, each of the light source units 3A includes a plurality of circuit boards 31 and a light-emitting diode 32 disposed on the circuit board 31, and at least one of the light-emitting diodes 31 is disposed on the circuit board 31. And a plurality of lens members 33 of a plurality of light-emitting diodes are covered. In the present embodiment, the number of the lens elements 33 is exemplified by four, and the actual implementation is not limited thereto. The circuit board 31 has a shape of an elongated strip and is respectively locked in parallel with each other in the recess 21 of the socket 2G. Each of the LEDs 32 is a surface-mounted package type of light-emitting diodes. The lens body includes a lens 321 facing the lens element 33. Each of the lens elements 33 is substantially in the shape of a rectangular plate and is made of a transparent plastic material. Each of the lens elements 33 includes a circuit board. a support body 331 on the upper side, and a plurality of illuminants 332 supported by the support body 331 and corresponding to the light-emitting diodes 32. In the embodiment, the φ lens element 33 is plastically injected and integrated. In the actual implementation, it is not limited to this. In addition, the number of the refractive bodies 332 of each of the lens elements 33 in the figure is exemplified by four, and the actual number of implementations may be one or more. As shown in the third figure, in detail, in order to enlarge the divergence angle of the light emitted by the light-emitting diode 32, the refracting bodies 332 have a central recessed portion 333, and a ring protruding around the central recessed portion 333. Part 334 from the bottom surface of the refractor The ray of light can be diffused around by the action of the diopter 2 to achieve the effect of expanding the divergence angle of the light. Further, in order to make the illumination of the street lamp and the adjacent illuminance close to M340396, to provide uniform illumination of the road, The optical axis 335 of the refracting body 332 is offset from the optical axis 322 of the illuminating diode in the first direction, and more specifically, the optical axis of the diopter 2 The phantom 5 is an optical axis 322 of the lens 321 which is offset from the first directional diode in the first direction by a predetermined distance. Thus, as shown in the fourth figure, the dotted line in the figure is the street lamp of the creation. / Illumination distribution curve of each angle on the direction X, it can be seen that the divergence angle of the light and the role of the refractive body 332 are expanded to 12 degrees (_6 degrees to degrees). Asymmetric distribution, in the range of 〇 to (9) degrees, the illuminance of the range is obviously #_6〇 to the extent of the illuminance is large 'represents that the illuminance away from the street lamp in the first direction X is greater than the illuminance at the adjacent street lamp' can be compensated The light of the street lamp is far lower than the street lamp. The solid line in the figure is the angle of the street lamp in the second direction γ, and the curve of the knife cloth. It can be seen that the divergence angle of the light in this direction is also expanded to 12 degrees by the action of the refractive body 332. (_6 degrees to +6 degrees). In the present embodiment, the optical axes 335 of the respective refracting bodies 332 are offset from the optical axis 322 of the light-emitting diodes 321 in the same direction along the first direction by a pre-turn distance. . However, in practice, the optical axis 335 of the predetermined number of refracting bodies 332 is offset from the optical axis 322 of the corresponding light-emitting diode 32 by adjusting the actual condition. As described above, the present invention expands the light divergence angle of the light-emitting diode 32 by the refractive body 332 of the lens element 33, and the optical axis of the refractive body 332 is offset from the optical axis of the light-emitting diode 32. 322, the illuminance distribution is not distributed to the M340396, and the effect of improving the uniformity of the street lamp in the vicinity and the distance is achieved. 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. [Simplified description of the diagram] The first picture is a schematic diagram of the street lamp of the creation. The second figure is a schematic diagram of the light source unit of the street lamp of the creation. The third figure is a cross-sectional view of the light source unit of the street lamp of the creation. The fourth picture is the illuminance distribution curve of the street lamp of the creation. [Main component symbol description] 10 lamp cup 20 lamp holder 21 groove 30 light source unit 31 circuit board 32 light emitting diode 321 lens 322 optical axis 33 lens element 331 support body 332 refractive body 333 central recessed portion 334 outer ring protruding portion 335 optical axis