201224359 六、發明說明： 【發明所屬之技術領域】 本發明是有關於一種照明裝置，特別是指一種照明裝 置及其透鏡單元。 【先前技術】 參閱圖1，以美國專利第7461960號案的照明裝置1為 例’主要包含用於發射光線的一發光二極體丨丨，及用於導 引光線的一透鏡12。該透鏡12可以調整與該發光二極體11 的間距，調到變焦的目的，進而能夠調整亮度與照明範圍 〇 參閱圖2 ’另以市面上的一種照明裝置2(http : //www.fraensrl.com)為例，主要包含載置一發光二極體21的 一載體22、形成在該載體22上的一對導桿23、與該導桿 23滑合且用於匯聚光線的一反射罩24，及嵌置在該反射罩 24内的一透鏡25。該反射罩24可以依循該對導桿23調整 與該發光二極體21的間距，調到變焦的目的，進而能夠調 整亮度與照明範圍。 參閱圖3,再以中華民國專利第379〇13號案的手電筒 3為例，主要包含一筒體3 1、設置在該筒體3丨一前端的一 透鏡32、容置在該筒體31内的—載體33、設置在該載體 33且相對該透鏡32的一發光二極體34，及可旋動的樞設 在該筒體31且與該載體33嚙合的一齒輪35。該齒輪35可 以驅動該筒體3 1調整與該透鏡32的間距，調到變焦的目 的’進而能夠調整亮度與照明範圍。 201224359 前述先前技術雖然都可以變焦’改變照明範圍，惟， 不管是移動透鏡12、或移動發光二極體34、或移動反射罩 24 ’都必須配合移動功能’額外設置驅動組件，不但會改 變原本的結構設置，致使組件增多、經裝程序複雜化 體體積無法縮減外，且光通量會隨著發光二極體與透鏡距 離的增加而降低，使發光效率不如預期。 【發明内容】 因此，本發明之目的，即在提供一種能夠簡化組件、 提升組裝方便性，及提升發光效率的照明裝置及其透鏡單 元0 於是，本發明的照明褒置’包含一載體、數發光元件 ’及一透鏡單元。該等發光元件設置在”體内且環繞一 置，並分別沿一光軸發射光線。該透鏡單元以該轴 線為中心可旋動的安裝在該载體且位於光行進的路徑上， 並具有環繞-軸線配置的數透鏡，該等透鏡分別具有一光 。4光'4別在重合於該光軸、脫離該光軸的位置間旋 動。 本發明的功效是以旋轉該透鏡單元的方式，在不影塑 光通量的情形下’調整照明亮度與範圍，不但不需要額二 的結構’且不佔用空間。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 以下配合參考m個較佳實施例的詳細201224359 VI. Description of the Invention: [Technical Field] The present invention relates to a lighting device, and more particularly to an illumination device and a lens unit thereof. [Prior Art] Referring to Fig. 1, the illuminating device 1 of the U.S. Patent No. 7,461,960 exemplarily includes a light-emitting diode 用于 for emitting light, and a lens 12 for guiding light. The lens 12 can adjust the distance from the light-emitting diode 11 to adjust the brightness and the illumination range. Referring to FIG. 2, another type of lighting device on the market (http://www.fraensrl) .com) as an example, mainly comprising a carrier 22 on which a light-emitting diode 21 is placed, a pair of guide rods 23 formed on the carrier 22, a reflector that slides with the guide rod 23 and is used to concentrate light. 24, and a lens 25 embedded in the reflector 24. The reflector 24 can adjust the distance from the pair of the guide bars 23 to the light-emitting diodes 21 to adjust the brightness and the illumination range. Referring to FIG. 3, the flashlight 3 of the Republic of China Patent No. 379〇13 is taken as an example, and mainly includes a cylinder 31, a lens 32 disposed at a front end of the cylinder 3, and received in the cylinder 31. The inner carrier 33, a light-emitting diode 34 disposed on the carrier 33 and opposite to the lens 32, and a gear 35 pivotably coupled to the cylinder 31 and meshing with the carrier 33. The gear 35 can drive the cylinder 31 to adjust the distance from the lens 32 to adjust the brightness and illumination range. 201224359 Although the foregoing prior art can zoom 'change the illumination range, only the moving lens 12, or the moving light-emitting diode 34, or the moving reflector 24' must cooperate with the moving function to additionally set the driving component, which will not only change the original The structure of the structure increases the number of components and the volume of the complicated body can not be reduced, and the luminous flux decreases as the distance between the light-emitting diode and the lens increases, so that the luminous efficiency is not as expected. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an illumination device and a lens unit thereof that can simplify components, improve assembly convenience, and improve luminous efficiency. Thus, the illumination device of the present invention includes a carrier and a number. Light-emitting element 'and a lens unit. The illuminating elements are disposed in the body and surround each other and respectively emit light along an optical axis. The lens unit is rotatably mounted on the carrier and located on the path of the light traveling around the axis, and a lens having a surround-axis configuration, each of the lenses having a light. The light 4 is rotated between positions that coincide with the optical axis and exit the optical axis. The effect of the present invention is to rotate the lens unit. In the case of not adjusting the luminous flux, the illumination brightness and range are not adjusted, and the structure of the second is not required, and the space is not occupied. [Embodiment] The foregoing and other technical contents, features and effects of the present invention are as follows. With reference to the details of m preferred embodiments
清楚的呈現。 Τ π J 201224359 參閱圖4、圖5’，及圖6,本發明照明裝置的一較佳實 施例包含—載體4、-發光元件組5、-透鏡單元6,及— 導光板7。 边載體4具有環繞一軸線X的一環壁41，及形成在該 環壁41 一内表面且用於反射光線的一反射面42。 該發光元件組5具有一基座51、安裝在該基座51的四 個發光元件52,及環束該基座51的一環蓋53。該等發光 元件52在本較佳實施例分別為一發光二極體，容置在該載 體4内且環繞該軸線X配置，並分別沿一光軸乙發射光線 〇 該透鏡單元6以該軸線x為中心可旋動的安裝在該載 體4 近a亥發光元件組5的一端且位於光行進的路徑上， 並具有環繞該軸線X以陣列方式排列且相互連結為一體的 數透鏡61。該等透鏡61分別具有一光心p(如圖7)。 *亥導光板7安裝在該載體4遠離該發光元件組5的另 端並具有形成在一外表面且用於破壞全反射路徑的數 微結構71。 參閱圖6、圖7，及附件丨，當該等透鏡的光心ρ分別 ”=等發光το件52的光軸L重合時，光線會聚焦在該軸線 亡方的焦點上，此時，光線的投射距離最遠，照明範圍 車又小。參閲圖6 '圖8、附件2，或圖6、圖9、附件3，當 旋動該透鏡單元6約15度或3G度時，該等透鏡61的光心 P會偏離該光軸L ’而達到散光的效果，此時，光線的投射 距離較短，且照明範圍較大。 201224359 另外’該載體4的反射面42可以反射由該等發光元件 52向四周散射的光線，使光線集令朝該等透豸&的方向行 進，提升光的利时，且該導光板7能夠導引光線在内部依 據全反射路徑行進’形成均勾的面光源，最後，以該等微結 構71破壞全反射路徑，使光線朝前方散射且趨於一致，藉此 ，有效提升輝度，並消除眩光。 值付提的疋，該透鏡單元6可以在該照明裝置出廠前 ’依據所需的投射距離與照明範圍，在安裝.時預設旋轉角度 ，或在該透鏡單元6 _周側形成有至少—凸部，及於該載體 4上形成可供前述凸部穿出且環繞該轴線χ滑動的至少一槽 道，供使用者透過該凸部旋動該透鏡單元6，使該等光心ρ 分別在重合於該光軸L、脫離該光軸L的位置間旋動，達到 調整投射距離與照明範圍的目的。 據上所述可知，本發明之照明裝置及其透鏡單元具有 下列優點及功效： 本發明相較於先前技術，並不需要額外的驅動組件， 就可以達到改變投射距離與照明範圍的目的不但能夠維 持原有的結構設計’進而簡化組件與組裝程序，及縮小體 積外，且該载體4、或該發光元件組5、或該透鏡單元6間 的距離都能夠維持固定，使光通量維持穩定，藉此，再配 & λ反射面42與忒導光板7的設計，有效提升本案發的發 光效率，使本發明更具有實用性經濟效益。 惟以上所述者’僅為本發明之較佳實施例而已，當不 能以此限定本發明實施之範圍，即大凡依本發明申請專利 201224359 輕4圍及發明說明内玄_所作：$館μ μ a鬥夺所作之間早的等效變化與修飾，皆仍 屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 圖1疋一示意圖，說明美國專利第746196〇號案； 圖2是一剖視圖，說明市面上的一種照明裝置； Η疋立體剖視圖，S兒明中華民國專利第379〇丨3號 案； 圖4疋一立體分解圖，說明本發明一照明裝置及其透 鏡單元的一較佳實施例； 圖5是該較佳實施例的一組合立體圖； 圖6疋該較佳實施例的一剖視圖； 圖7是一頂視圖，說明該較佳實施例中數透鏡的光心 分別與數發光二極體的光軸重合； 圖8是一頂視圖，說明該較佳實施例中該等透鏡的光 心分別偏離該等發光二極體的光軸約15度；及 圖9是一頂視圖，說明該較佳實施例中該等透鏡的光 心分別偏離該等發光二極體的光軸約3〇度。 【圖式簡單說明] 附件1是一光型圖，說明透鏡的光心與發光二極體的 光軸重合； 附件2是一光型圖，說明透鏡的光心偏離發光二極體 的光軸約15度；及 附件3是一光型圖，說明透鏡的光心偏離發光二極體 的光軸約30度。 201224359 【主要元件符號說明】 4…… •…·載體 6… 41 …··環壁 61 ·· 42… .....反射面 7 · 5…… •…發光元件組 71 · 51 基座 X… 52…… …·發光元件 L… 53…·. •…環蓋 p ... 透鏡單元 •透鏡 •導光板 -微結構 -軸線 •光轴 •光心Clear presentation. π π J 201224359 Referring to Figures 4, 5', and 6, a preferred embodiment of the illumination device of the present invention comprises a carrier 4, a light-emitting element group 5, a lens unit 6, and a light guide plate 7. The side carrier 4 has a ring wall 41 surrounding an axis X, and a reflecting surface 42 formed on an inner surface of the ring wall 41 for reflecting light. The light-emitting element group 5 has a susceptor 51, four light-emitting elements 52 mounted on the susceptor 51, and a ring cover 53 that bundles the susceptor 51. In the preferred embodiment, the light-emitting elements 52 are respectively disposed in the carrier 4 and disposed around the axis X, and respectively emit light along an optical axis B. The lens unit 6 is on the axis. The x is centrally rotatable and mounted on one end of the carrier 4 near the light emitting element group 5 and on a path in which the light travels, and has a number lens 61 arranged in an array around the axis X and integrally coupled to each other. The lenses 61 each have an optical center p (Fig. 7). * The light guide plate 7 is mounted on the other end of the carrier 4 away from the light-emitting element group 5 and has a microstructure 71 formed on an outer surface for destroying the total reflection path. Referring to FIG. 6, FIG. 7, and the attachment 丨, when the optical centers ρ of the lenses respectively “=the light illuminates the optical axis L of the member 52, the light will be focused on the focus of the dead line of the axis, at this time, the light The projection distance is the farthest, and the illumination range is small. Referring to Figure 6 'Figure 8, Annex 2, or Figure 6, Figure 9, Annex 3, when the lens unit 6 is rotated about 15 degrees or 3G degrees, The optical center P of the lens 61 deviates from the optical axis L' to achieve the effect of astigmatism. At this time, the projection distance of the light is short and the illumination range is large. 201224359 In addition, the reflection surface 42 of the carrier 4 can be reflected by the same The light scatters from the illuminating element 52 to the periphery, so that the light ray is arranged to travel in the direction of the oscillating & ampere, and the light guide plate 7 can guide the light to travel inside according to the total reflection path. The surface light source, finally, destroys the total reflection path with the microstructures 71, so that the light scatters toward the front and tends to be uniform, thereby effectively increasing the luminance and eliminating the glare. The value of the lens unit 6 can be The lighting device is shipped from the factory according to the required projection distance and a clear range, a preset rotation angle at the time of installation, or at least a convex portion formed on the lens unit 6 - circumference side, and a support for the convex portion to be slid around the axis At least one channel for the user to rotate the lens unit 6 through the convex portion, so that the optical centers ρ are respectively rotated between the positions overlapping the optical axis L and the optical axis L, thereby adjusting the projection distance and The purpose of the illumination range. As described above, the illumination device and the lens unit thereof of the present invention have the following advantages and effects: The present invention can achieve a change in projection distance and illumination compared to the prior art without requiring an additional drive assembly. The purpose of the scope is not only to maintain the original structural design', but also to simplify the assembly and assembly process, and to reduce the volume, and the distance between the carrier 4, or the light-emitting element group 5, or the lens unit 6 can be maintained constant. The luminous flux is kept stable, thereby reconfiguring the & λ reflecting surface 42 and the design of the 忒 light guiding plate 7, thereby effectively improving the luminous efficiency of the present invention, and making the present invention more practical and economical. The description of the present invention is only a preferred embodiment of the present invention, and is not intended to limit the scope of the practice of the present invention, that is, the patent application of the present invention 201224359, and the description of the invention. The early equivalent changes and modifications between the two are still within the scope of the present invention. [Simplified Schematic] FIG. 1 is a schematic view showing the US Patent No. 746196 ;; FIG. 2 is a cross-sectional view. Description of a lighting device on the market; Η疋 stereoscopic cross-sectional view, S children's Republic of China patent No. 379〇丨3; FIG. 4 is an exploded perspective view showing a preferred embodiment of a lighting device and a lens unit thereof according to the present invention Figure 5 is a combined perspective view of the preferred embodiment; Figure 6 is a cross-sectional view of the preferred embodiment; Figure 7 is a top view showing the optical center and number of illumination of the lens in the preferred embodiment The optical axes of the diodes are coincident; FIG. 8 is a top view showing that the optical centers of the lenses are respectively offset from the optical axis of the light-emitting diodes by about 15 degrees in the preferred embodiment; and FIG. 9 is a top view. , illustrating the preferred embodiment Etc. are offset from the optical center of the lens optical axis of the light-emitting diode is about two degrees 3〇. [Simple description of the drawing] Attachment 1 is a light pattern showing that the optical center of the lens coincides with the optical axis of the light-emitting diode; Annex 2 is a light pattern showing that the optical center of the lens deviates from the optical axis of the light-emitting diode About 15 degrees; and Annex 3 is a light pattern showing that the optical center of the lens is about 30 degrees from the optical axis of the light-emitting diode. 201224359 [Explanation of main component symbols] 4... •...·carrier 6...41 ...··ring wall 61 ·· 42... .....reflecting surface 7 · 5... •...lighting element group 71 · 51 base X ... 52...... ...·Light-emitting element L... 53...·.•...ring cover p ... lens unit • lens • light guide plate - microstructure - axis • optical axis • light center
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