M426710 五、新型說明： 【新型所屬之技術領域】 摘作係關於-種雙面發光型的燈具結構，特別是關於一 種可調整光強度的雙面發光型燈具結構。 【先前技術】 近年來，由於向功率發光二極體（LED)的不斷改良，在許 夕領域的應用上已漸漸取代白幟燈泡與日光燈。以燈具為例， • 就經常使用LED作為光源，因為LED具有很強的方向性且能夠 發出高均勻度的混光，以構成一個均勻的面光源。 清參考第1圖所示’其顯示一習知的雙面發光型燈具内部 結構之剖面圖，此種具有雙發光面的燈具結構，可形成良好的 情境以及裝飾效果，並增加該燈具的附加價值。此種習知燈具 之主要結構包括·四個複數LED組1 〇、兩組導光板12以及一 反射板14 ,其_該兩組導光板12分別設置於該燈具之上發光 φ 面以及下發光面的上下垂直方向上。該四個複數LED組10分 成兩組分別設置於兩組導光板12的左右兩邊。該反射板μ分 隔於兩導光板12中間，以分隔該燈具之上發光面以及下發光 面。從第1圖可知’為了達到雙面發光的目的，此燈具結構必 須使用兩組導光板12以及四個LED組10，以獨立分列的方式 使燈具結構具有雙面發光的功能。除此之外，該結構的燈具， 必須使用一额外的控制器（未圖示）選擇上發光面發光或下發 光面發光，以致該燈具結構必須使用較多的光學元件及相關控 3 M426710 制組件’而額外增加控制電路的成本，如此皆將導致燈具的結 構設計無法小型化並限制其造型的設計，且因使用較多的零 件’將導致製作成本的提高。 【新型内容】 本創作之目的在於提供一種可調整光強度的雙面發光型燈 具結構，其不僅能達到小型化的結構設計，同時亦能因簡化結 構進而達到節省元件成本的優點。 為達到上述㈣作目的’依據本創作之第—實施例的可調整 光強度的雙面發光型燈具結構，主要包含：至少兩個發光二極體 (led)組’分列於該燈具結構之兩相對側邊，且朝中間發出光線； 導光板’具有第-表面以及與該第—表面彼此相對的第二表 面’該第-表面以及第二表面分列於上下兩側，將該至少兩個· 組發出的光線導引成兩面光源的光線；兩擴散片，分別設置於 該導光板的第-表面以及第二表面之外部，使LED組發出的光線 能夠均勻混光’以在該至少兩組擴散片上分別構成—均句發光 的第一發光面及一均勻發光的第二發光面。 依據本創作之可調整光強度的雙面發光型燈具結構其中每 一個LED組包含至少一個led。 依據本創作之可調整光強度的雙面發光型燈具結構，其中該 導光板的第-表面面對該至少兩組擴散片上的第—發光面，以 及第二表面面對該至少兩組擴散片上的第二發光面，且該導光 板具有複數個不同分佈間距的微型結構沿著該第—表面上設置， 料功710 以變化光線的折射角度。 依據本創作之可調整光強度的雙面發光型燈具結構，其中接 近該第一表面之兩相對侧邊的部分微型結構的分佈間距是大於位 於該第一表面中間的其他微型結構的分佈間距。而該複數個微型 結構為弧形結構。 依據本創作之第二實施例之可調整光強度的雙面發光型燈具 結構，其中該第一表面的外部設置兩組擴散片。第三實施例之可 調整光強度的雙面發光型燈具結構，其中該第—表面以及第二表 面外部分別設置高霧度擴散片以及低霧度擴散片。第四實施例之 可調整光強度的雙面發光型燈具結構，其中該第一及第二表面外 部可使用不同材料來替代和調整導歧上的微結構。 為了讓本創作之上述和其他目的、特徵、優點與實施例能更 月.4易It ’下文將舉出實施例來加以說明，並配合所附圖式作 詳細說明如下。 【實施方式】 以下…合附圖對本創作的技術方案進行詳細說明。在此需 W的疋；ί;同的圖式中，才目Θ的元件符號表示相同或相似的 凡件以下所提及之附加圖式的面方向定義為垂直於該平面的 法向里在此’使用的方向用語是用以說明及理解本創作，而 非用以限制本創作。 月參考第2圖所不’第2圖為依據本創作的第-實施例之可 調整光強度的雙面發光型燈具結構之剖面示意圖，其中該燈具結 M426710 構包含：兩個發光二極體⑽）組1〇、一導光板12以及兩組擴散 片16。 該兩個LED、组.10W每一组LED數量可以是至少一個或—個以 上’且該兩個⑽組1〇是分列於該導光板12的左右兩相對側 邊刀別朝該導光板12之左、右兩相對側邊發出光線。當每個咖 組的LED為-個以上時’將以等間距直線排列方式，分佈於該導 光板12的左、右兩相對側邊。該導光板12具有一第一表面2及 -彼此相對的第二表面4，且沿著該第—表面2上設置複數個不同 分稀間距的弧狀微型結構18。如第2圖所示’這些弧狀的微型結 構18的排列方式是以鄰近該第一表面2兩相對側之微型結構μ 排列較疏（分佈間距D1)但鄰近於第一表面2中間之微型結構Μ 排列較密（分佈間距D2)的不同分佈密度排列於第一表面2上，透 過D1大於D2,可以改變光線的折射角度集中在燈具的中間區域； 同時’該導光板12的第-表面2及第二表面4可以分別導引該至 少兩個發光二極體組1〇發出的光線以較大偏斜折射角度朝向導 光板12的第一表面2之第一發光面以及第二表面4之第二發光面 的外部作上下方向的發散。於其他實施應用上，這些微型結構18 也可以改由多個具半圓形或凹凸截面的結構直接形成或外覆設置 於該第一表面2上。 在此先行定義的是，下述所稱的垂直角定義為所測方向與水 平面間之夾角，例如：燈具正下方為垂直角〇度，偏斜3〇度即為垂 直角30度。接著由第2圖中的導光板12的第一表面2以及第二 M426710 表面4外部之箭頭所代表的光線強度可瞭解，從第一表面2所折 射出導光板12的光線強度較弱（約佔該燈具的總光通量的2〇%到 40% );但是從第二表面4所折射出導光板。的光線強度較強（約 佔該燈具的總光通量的60%到80% )。請進一步參考第3圖所示， 為本創作之第f施例的可調整光強度的雙面發光型燈具結構的 實際配光曲線之實驗圊。此圖的中間縱軸部份7〇為光強度/仔光 通量，其單位為cd/klm，圖中左、右及上、下方周圍的標號75 # 代表光線射出的垂直角，標號6〇,㈣燈具結構的第二表面4的 水平角之配光曲線，標號62，代表垂直角之配光曲線；標號⑼ 代表燈具結構的第-表面2的水平角之配光曲線，標號62代表垂 直角之配光曲線。從該第3圖中可得知，該燈具結構於垂直角『 的光強度’亦即是導光板12的第二表面4方向的光強度為⑽ cd/klni，而該燈具結構於垂直角18〇。的光強度，亦即是導光板u 的第-表面2方向的光強度為9〇 cd/klm。從上述的實驗圖中得 ®知’大部份的光線⑽）從導光板12的第二表面4方向射出，作 為該燈具的照明用途，而少部份的光線（寫）從導光板12的第一 表面2方向射出，作為該燈具的情境以及裝飾用途。 請再參閱第2圖所示’該兩組擴散>1 16分別設置於導光板12 的第表面2以及第二表面4的外部將導光板12的第一表面2 以及第一表面4为別傳來的發光二極體组16發出的光線能夠均 勻混光，以在該兩組擴散片16上分別構成—均勾發光的p 發光面及另一均勾發光的第二發光面，其中該導光板12的第— 7 表面2面對該擴散片上的第一 ^ 土先面’以及第二表面4面對該擴 散片16上的第二發光面。 八 月參閱第4圖所不’第4圖為本創作的第二實施例。其與第2 圖之第-實施例相較’相異之處在於：第二實施例之燈具的導光 板12的第—表面2方向再增加—擴散片16,且位於原擴散片16 的上方’以調整經由導光板12的第—表面2射出的光線之角度， 再將上述射出的光線’更向燈具中心集中，以構成—個比第一實 施例的燈具更均勻的面光源。 請參閱第5圖所示，第5圖為本創作的第三實施例。第三實 施例與第-實施例的結構相同’皆是於導光板12的第—表面2以 及第-表面4的外部各放置—擴散片16，該擴散片16的方向與導 光板12相同，用以調整射出的光線之角度，將上述往兩旁分散射 出的光線’猶向燈具中心集中，以構成—個更均勻的面光源。而 不同之處為·第二實施例的導光板12的第—表面2的外部放置的 是一高霧度的擴散片16，作為情境燈光的用途，而導光板12的第 二表面4的外部放置的是一低霧度的擴散片16，作為主要燈光的 照明用途。兩發光面的光強度比值可彻擴散片16的霧度作調 整’以達到導光板12的第-表面2的外部之光強度為2〇%到40 % ，導光板12的第二表面4的外部的光強度為60%到8〇%之最 佳光強度比值，且利用擴散片16的霧度可任意調整兩發光面的發 光強度。 凊參閱第6圖所示，第6圖為本創作的第四實施例。第四實 M426710 施=與前述的第—至第三實施例之不同處在於··在導光板上調整 為結構的第一、二表面的外部放置不同材料，利用調整導光板微 結構和使用不同材料的透光度來調整情境燈光與主要照明燈光的 光強度比例，使兩發光面的光強度達到使用者的要求。由於其他 詳細說明與前述實施例相同，為避免重複，在此省略。 本創作提供—種可調整光強度的雙面發㈣燈具結構，利用 上下兩發光面的擴散片與導光板不同的透光率之調整，使其能 達到小型化的結構之設計，不僅有別於習知技術，替代兩組^ 光板之較複雜的燈具結構，同時亦能因簡化結構進而達到節省 元件成本的優點。 上述實施例僅是為了讓本領域技術人員理解本創作而提 供的最優選的實施模^本創作並不僅限於上述具體實施方 式。任何本領域技術人員所易於思及的改進均在本創作的構思 之内。 【圖式簡單說明】 第1圖係㈣習知雙面發光型燈具結構之剖面示竟圖。 第2圖係纷示依據本創作之第一實施例之可調整光強度的 雙面發光型燈具結構的剖面示意圖。 =3圖係跨示依據本創作之第—實施例之可調整光強度的雙 面發光型燈具結構之配光曲線圖。 第4圖係繪示依據本創作之第二實施例之可調整光強度的 雙面發光型燈具結構之剖面示意圖。 第5圖係繪示依據本創作 _ 雙面發光型燈具結構之剖面示意^二貫施例之可調整光強度的 M426710 第6圖係繪示依據本創作之第四實施例之可調整光強度的 雙面發光型燈具結構之剖面示意圖。 【主要元件符號說明】 2 第一表面 4 第二表面 10 LED組 12 導光板 14 反射板 16 擴散片 18 微型結構 60、62、60’ 、62’ 配光曲線 70 光強度/什光通量 75 垂直角 D1 'D2 分佈間距M426710 V. New description: [New technical field] The following is a description of the structure of a double-sided illumination type lamp, in particular, a double-sided illumination type lamp structure with adjustable light intensity. [Prior Art] In recent years, due to the continuous improvement of power LEDs, the applications of the X-ray field have gradually replaced the white bulbs and fluorescent lamps. Taking luminaires as an example, • LEDs are often used as light sources because LEDs have a strong directionality and can emit a high degree of uniformity to form a uniform surface source. Referring to FIG. 1 , which shows a cross-sectional view of the internal structure of a conventional double-sided illumination type lamp, such a lamp structure having a double luminous surface can form a good situation and a decorative effect, and increase the addition of the lamp. value. The main structure of the conventional lamp includes: four complex LED groups 1 〇, two sets of light guide plates 12 and a reflector 14 , wherein the two sets of light guide plates 12 are respectively disposed on the luminaire and the lower illuminating The top and bottom of the face are in the vertical direction. The four complex LED groups 10 are divided into two groups which are respectively disposed on the left and right sides of the two sets of light guide plates 12. The reflector μ is spaced between the two light guide plates 12 to separate the upper and lower illumination surfaces of the lamp. It can be seen from Fig. 1 that in order to achieve the purpose of double-sided illumination, the lamp structure must use two sets of light guide plates 12 and four LED groups 10 to independently illuminate the lamp structure with double-sided illumination. In addition, the luminaire of this structure must use an additional controller (not shown) to select the upper illuminating surface or the lower illuminating surface to be illuminated, so that the luminaire structure must use more optical components and related control 3 M426710 system The component 'adds additional cost to the control circuit, which will result in the design of the luminaire not being miniaturized and limiting the design of the styling, and the use of more parts will result in higher manufacturing costs. [New content] The purpose of this creation is to provide a double-sided light-emitting lamp structure with adjustable light intensity, which not only achieves a miniaturized structural design, but also achieves the advantage of saving component cost by simplifying the structure. The double-sided illumination type lamp structure for adjusting the light intensity according to the above-mentioned fourth embodiment of the present invention mainly includes: at least two LED groups are classified in the lamp structure. Two opposite sides, and emitting light toward the middle; the light guide plate 'having a first surface and a second surface opposite to the first surface", the first surface and the second surface are arranged on the upper and lower sides, the at least two The light emitted by the group is guided into the light of the two-side light source; the two diffusion sheets are respectively disposed on the first surface and the second surface of the light guide plate, so that the light emitted by the LED group can be uniformly mixed with light at least The two sets of diffusers respectively form a first light-emitting surface that emits light in a uniform sentence and a second light-emitting surface that emits light uniformly. A double-sided illumination type luminaire structure according to the present invention, wherein each of the LED groups includes at least one led. The double-sided light-emitting lamp structure according to the present invention, wherein the first surface of the light guide plate faces the first light-emitting surface of the at least two sets of diffusion sheets, and the second surface faces the at least two sets of diffusion sheets The second light-emitting surface, and the light guide plate has a plurality of micro-structures with different distribution pitches disposed along the first surface, and the work 710 is used to change the angle of refraction of the light. According to the present invention, the double-sided illumination type luminaire structure of the adjustable light intensity, wherein the distribution pitch of the partial microstructures adjacent to the opposite sides of the first surface is greater than the distribution pitch of the other microstructures located in the middle of the first surface. And the plurality of micro structures are curved structures. According to a second embodiment of the present invention, the light-intensity double-sided illumination type lamp structure is provided, wherein two sets of diffusion sheets are disposed outside the first surface. The double-sided light-emitting type lamp structure of the third embodiment, wherein the first surface and the second surface are respectively provided with a high haze diffusion sheet and a low haze diffusion sheet. The double-sided illumination type lamp structure of the fourth embodiment, wherein the first and second surfaces can be replaced with different materials to replace and adjust the microstructure on the guide. The above and other objects, features, advantages and embodiments of the present invention will be described in the following description. [Embodiment] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings. In the same drawing, the symbol of the component that is the same or similar is indicated. The face orientation of the additional pattern mentioned below is defined as the normal direction perpendicular to the plane. This 'direction' is used to describe and understand the creation, not to limit the creation. Referring to FIG. 2, FIG. 2 is a cross-sectional view showing the structure of the double-sided illumination type lamp with adjustable light intensity according to the first embodiment of the present invention, wherein the lamp junction M426710 comprises: two light-emitting diodes (10)) Group 1〇, a light guide plate 12, and two sets of diffusion sheets 16. The two LEDs, the group of .10W, the number of LEDs in each group may be at least one or more than 'and the two (10) groups 1 〇 are arranged on the left and right opposite sides of the light guide plate 12 to the light guide plate The left and right opposite sides of the 12 emit light. When the LEDs of each of the coffee sets are one or more, they will be arranged in an equidistant linear arrangement on the left and right opposite sides of the light guide plate 12. The light guide plate 12 has a first surface 2 and a second surface 4 opposite to each other, and a plurality of arcuate microstructures 18 of different different pitches are disposed along the first surface 2. As shown in Fig. 2, the arc-shaped microstructures 18 are arranged in such a manner that the microstructures μ adjacent to the opposite sides of the first surface 2 are arranged sparsely (distribution pitch D1) but adjacent to the middle of the first surface 2 The different distribution densities of the structure Μ densely arranged (distribution pitch D2) are arranged on the first surface 2, and the D1 is larger than D2, the refractive angle of the light can be changed to be concentrated in the middle region of the luminaire; and the first surface of the light guide plate 12 2 and the second surface 4 can respectively guide the light emitted by the at least two light emitting diode groups 1 toward the first light emitting surface of the first surface 2 of the light guide plate 12 and the second surface 4 with a large deflection angle of refraction. The outside of the second light-emitting surface is diverged in the vertical direction. In other implementations, the microstructures 18 may also be formed directly or overlaid on the first surface 2 by a plurality of structures having semi-circular or concave-convex cross-sections. The first definition here is that the vertical angle referred to below is defined as the angle between the measured direction and the horizontal plane. For example, the vertical angle is directly below the luminaire, and the skew is 3 degrees at a vertical angle of 30 degrees. Next, it can be understood from the light intensity represented by the first surface 2 of the light guide plate 12 in FIG. 2 and the arrow outside the surface 4 of the second M426710 that the light intensity of the light guide plate 12 refracted from the first surface 2 is weak (about It accounts for 2% to 40% of the total luminous flux of the luminaire; however, the light guide plate is refracted from the second surface 4. The light intensity is strong (about 60% to 80% of the total luminous flux of the luminaire). Please refer to Figure 3 for an experiment of the actual light distribution curve of the double-illuminated lamp structure with adjustable light intensity for the f-th embodiment of the creation. The middle vertical axis portion of the figure is 7 〇 is the light intensity / azimuth flux, and its unit is cd/klm. The left and right, and the upper and lower marks in the figure are 75 # representing the vertical angle of the light, 6 〇, (4) The light distribution curve of the horizontal angle of the second surface 4 of the luminaire structure, reference numeral 62, represents the light distribution curve of the vertical angle; the reference numeral (9) represents the light distribution curve of the horizontal angle of the first surface 2 of the luminaire structure, and the reference numeral 62 represents the vertical angle Light distribution curve. As can be seen from FIG. 3, the light intensity of the illuminator structure at the vertical angle "the intensity of the second surface 4 of the light guide plate 12 is (10) cd/klni, and the luminaire structure is at a vertical angle of 18 Hey. The light intensity, that is, the light intensity in the first-surface 2 direction of the light guide plate u is 9 〇 cd/klm. From the above experimental diagram, it is known that 'most of the light (10) is emitted from the second surface 4 of the light guide plate 12 as the illumination use of the lamp, and a small portion of the light (write) is from the light guide plate 12. The first surface 2 is emitted in the direction of the luminaire and the decorative use. Referring to FIG. 2, the two sets of diffusions are disposed on the outer surface of the first surface 2 and the second surface 4 of the light guide plate 12, respectively, and the first surface 2 and the first surface 4 of the light guide plate 12 are separately transmitted. The light emitted by the LED group 16 can be evenly mixed to form a p-light emitting surface and a second light emitting surface, respectively, on the two sets of diffusing films 16, wherein the light guiding surface The seventh surface 2 of the light plate 12 faces the first first surface 'on the diffusion sheet and the second surface 4 faces the second light emitting surface on the diffusion sheet 16. Referring to Fig. 4 in August, Fig. 4 is a second embodiment of the present invention. The difference from the first embodiment of FIG. 2 is that the first surface 2 of the light guide plate 12 of the luminaire of the second embodiment is further increased by the diffusion sheet 16 and is located above the original diffusion sheet 16. 'In order to adjust the angle of the light emitted through the first surface 2 of the light guide plate 12, the above-mentioned emitted light rays are further concentrated toward the center of the lamp to constitute a more uniform surface light source than the lamp of the first embodiment. Please refer to FIG. 5, which is a third embodiment of the present creation. The third embodiment is the same as the structure of the first embodiment, and is disposed on the first surface 2 of the light guide plate 12 and the outside of the first surface 4, the diffusion sheet 16 having the same direction as the light guide plate 12, In order to adjust the angle of the emitted light, the above-mentioned light scattered to the two sides is concentrated to the center of the lamp to form a more uniform surface light source. The difference is that the exterior of the first surface 2 of the light guide plate 12 of the second embodiment is a high-yield diffusion sheet 16 for use as a situational light, and the exterior of the second surface 4 of the light guide plate 12 A low haze diffuser 16 is placed for illumination purposes as the primary light. The light intensity ratio of the two light-emitting surfaces can be adjusted by the haze of the diffuser 16 to achieve a light intensity of 2% to 40% outside the first surface 2 of the light guide plate 12, and the second surface 4 of the light guide plate 12 The external light intensity is an optimum light intensity ratio of 60% to 8%, and the light-emitting intensity of the two light-emitting surfaces can be arbitrarily adjusted by the haze of the diffusion sheet 16. Referring to Figure 6, Figure 6 is a fourth embodiment of the present invention. The fourth embodiment of the M426710 is different from the foregoing first to third embodiments in that the first and second surfaces of the structure are adjusted on the light guide plate to place different materials, and the microstructure and use of the light guide plate are adjusted differently. The transmittance of the material adjusts the ratio of the light intensity of the ambient light to the main illumination light so that the light intensity of the two light-emitting surfaces meets the requirements of the user. Since the other detailed description is the same as the foregoing embodiment, in order to avoid redundancy, it is omitted here. The present invention provides a double-sided hair (four) lamp structure with adjustable light intensity, and the use of different transmittances of the diffuser and the light guide plate of the upper and lower light-emitting surfaces enables the design of the miniaturized structure to be different. In the conventional technology, instead of the more complicated luminaire structure of the two sets of light plates, the advantages of saving component cost can be achieved by simplifying the structure. The above-described embodiments are merely for the purpose of allowing the person skilled in the art to understand the present invention and the most preferred embodiment of the invention is not limited to the specific embodiments described above. Any improvement that is readily apparent to those skilled in the art is within the contemplation of the present invention. [Simple description of the drawings] Fig. 1 is a cross-sectional view showing the structure of a conventional double-sided illumination type lamp. Fig. 2 is a schematic cross-sectional view showing the structure of a double-sided light-emitting lamp according to the first embodiment of the present invention. The =3 diagram spans the light distribution curve of the double-sided illumination type lamp structure of the adjustable light intensity according to the first embodiment of the present invention. Fig. 4 is a schematic cross-sectional view showing the structure of a double-sided illumination type lamp according to the second embodiment of the present invention. Figure 5 is a cross-sectional view of the structure of the double-sided illumination type lamp. The M426710 of the adjustable light intensity of the second embodiment is shown in Fig. 6. The sixth figure shows the adjustable light intensity according to the fourth embodiment of the present invention. A schematic cross-sectional view of a double-sided illumination type lamp structure. [Main component symbol description] 2 First surface 4 Second surface 10 LED group 12 Light guide plate 14 Reflector 16 Diffusion sheet 18 Micro structure 60, 62, 60', 62' Light distribution curve 70 Light intensity / light flux 75 Vertical angle D1 'D2 distribution pitch