201024160 六、發明說明： 【發明所屬之技術領域】 、本發明係提供—種光學照明裝置，尤指—種具可調整 光線投射距離之反射式自行車燈裝置。 【先前技術】 隨著節能減碳之意識的高漲，自行車成為大眾代步及 休閒的新寵。除了作為上下班的代步工具之外，在週休時201024160 VI. Description of the Invention: [Technical Field of the Invention] The present invention provides an optical illumination device, in particular, a reflective bicycle lamp device with an adjustable light projection distance. [Prior Art] With the rising awareness of energy saving and carbon reduction, bicycles have become the new favorite of mass transit and leisure. In addition to being a means of commuting to and from work, during the week off
外出兜風或健身，自行車也是極佳的選擇。騎乘自行車雖 為響應環保的最佳工具’但仍需考量其安全性，尤其是夜 間的行車安全。 ' 由於自行車不同於汽、機車，於出廠前即配備有車 燈，須由騎乘者額外購置，藉由安裝車燈不僅可使騎乘者 更清楚前方路況，另具有警示其他用路人的功能，可增加 騎乘者自身的安全性。 目前市面上所見之自行車燈，其所發出之光線的投射 ❿距離無法隨著使用者的需求而做遠近調整。對於使用者而 言’無法依路況調整投射光線的遠近模式，顯然極為不 便。 【發明内容】 馨於先前技術所述’本發明之目的即在於提供一種可 以調整光線投射距離之反射式自行車燈裝置。藉由改變該 反射式自行車燈裝置之反射罩與發光單元之相對位置，以 便調整發出光線投射距離的遠近，使達成近燈與遠燈兩種 不同的模式。 3 201024160 為達上述目的，本發明提供一種可調整光線投射距離 之反射式自仃車燈裝置，用以將光線投射至一路面上，該 反射式車燈敦置包含一基座、一反射罩、一發光單元，以 及一驅動機構。該反射罩設置於該基座之下表面，並與該 土座配σ界疋一谷置空間以及一與該容置空間連通之開 口，該反射罩具有一面朝該容置空間之反射面。該發光單 又置於該基座之下表面，且位於該容置空間中，該發光 ❹單凡所向下發出之光線可經由該反射面之反射並經由該開 口於該路面上投射形成一照明區。該驅動機構用以改變該 反射罩與該發光單元之間的水平相對距離，藉由該驅動機 構改變該反射罩與該發光單元之間的水平相對距離，以使 該照明區相對該基座遠近移動。 本發明透過移動該驅動機構，調整該反射罩與該發光 單元之水平相對位置，以達成調整不同光線投射距離的功 能，不僅設計極為簡便，使用者也可隨時調整所需要的模 © 式，使行車過程更為安全。 【實施方式】 配合參閱第一圖及第二圖所示，為依據本發明之一較 佳實施例之可調整光線投射距離之反射式自行車燈裝置之 示意圖。該自行車燈裝置可將其内部所發出之光線投射至 一路面上。 該反射式自行車燈裝置包含一基座10、一反射罩12、 一發光單元14,以及一用以改變該反射罩12與該發光單元 14之間的水平相對距離的驅動機構30。 201024160 該基座10具有一水平部ιοί及一垂直部1〇2，該垂直 部102係由該水平部ιοί向下延伸，且該垂直部1〇2形成 有一螺孔103。 該反射罩12可活動地設置於該基座之水平部〖ο〗的 下表面’並與該基座1〇配合界定一容置空間4〇，及一與該 容置空間40相通之開口 50。該反射罩12具有一面朝該容置 空間40之反射面121 。該反射面121為一凹面，較佳地可 為為一球面、一拋物面或一橢球面。 該發光單元14設置於該基座10之水平部1〇1的下表 面，且位於該容置空間4〇中，該發光單元14所向下發出之 光線可經由該反射面121之反射並經由該開口 5〇於該路面 上投射形成一照明區。在本實施例中，該發光單元14為一 發光二極體，實際實施時不以此限。 該驅動機構30包含一螺穿於該垂直部1〇2之螺孔1〇3 並可轉動地嵌設於該反射罩12之螺桿16。 由於該反射罩12係可活動地裝設於該基座1〇之水平部 1〇1的下表面’且該螺桿16之一端係螺穿該垂直部1〇2並 嵌設於該反射罩12。透過該螺桿16之向内旋入時，可使該 反射罩12朝該發光單元14水平地移動。在該螺桿16向外旋 出時’可使該反射罩12水平地遠離該發光單元14，藉此改 變該反射罩12與該發光單元14之水平相對位置。其中該反 射罩12相對該基座之水平可移動之距離具有一定之限 制’其被限制於一預定間距d内移動。 詳細來說’首先參閱第三圖，當該螺桿16向内旋入該 5 201024160 螺孔103時，帶動該反射罩12朝該發光單元14之方向移 動。當該反射罩12靠近該發光單元14時，該發光單元14所 發出之光線主要係藉著鄰近該水平部101之部份反射面 121反射而出，並通過該開口 50向前向下投射至該路面18 上。由於鄰近該水平部101之部份反射面121之斜率較 大，因此經由該開口 50投射於該路面18上之照明區較靠近 於該基座10。定義由該發光單元14之中心向下垂直延伸至 該路面18之交點為一參考點〇，另外，更定義該照明區鄰 ®近該參考點0之一近端為一第一光影投射sP1，該參考點 0至該第一光影投射點P1之距離為一第一距離L1。 其次參閱第四圖’當該螺桿16向外旋出該螺孔 時，帶動該反射罩12朝遠離該發光單元14之方向移動。當 該反射罩12遠離該發光單元14時，該發光單元μ所發出之 光線主要係藉著遠離該水平部101之部份反射面121反射 而出’並通過該開口 50向前向下投射至該路面18上。由於 ❹遠離該水平部101之部份反射面121之斜率較小，因此經 由該開口 50投射於該路面18上之照明區較遠離於該基座 1〇。定義該發光單元14之中心向下垂直延伸至該路面18之 交點為一參考點0 ,另外，更定義該照明區鄰近該參考點 〇之一近端為一第二光影投射點四，該參考點〇點至該第 一光影投射點P2之距離為一第二距離L2。比較第三圖及第 四圖，可明顯看出該第一距離L1小於該第二距離L2。 因此，實際應用時，當該反射罩12靠近該發光單元14 時因所投射之第一距離L1較短，可作為本發明之反射式 201024160 自行車燈裝置的近燈模式；另外，當該反射罩12遠離該發 光單元14時，其所投射而出之第二距離L2較長，可作為本 發明之反射式自行車燈裝置的遠燈模式。 綜上所述，本發明之可調整光線投射距離之反射式 自行車燈裝置係藉由該驅動機構3〇，帶動該反射罩12相對 於該發光單元14移動，以改變該發光單元14之光線投射距 離的遠近。提供使用者依照實際路況以及本身需求，隨時 ©轉換不同的使用狀態，使行車過程更為安全。 此外，上述實施例雖是以驅動機構3〇移動該反射罩12 來改變該反射罩12與該發光單元14之相對距離，實際實施 時，熟知該項技藝者亦可透過對應之驅動機構移動該發光 單元14來改變該反射罩12與該發光單元14之相對距離，亦 可達成本發明之功效。 惟以上所述者’僅為本發明之較佳實施例，當不能限 定本發明實施之範圍，即凡依本發明申請專利範圍所作之 ❹等效變化與修飾，皆仍屬本發明之專利涵蓋範圍保護之範 【圖式簡單說明】 第一圖，為本發明之可調整光線投射距離之反射式自 行車燈裝置之一立體圖。 第二圖’為本發明之可調整光線投射距離之反射式自 行車燈裝置之一剖視圖。 第三圖’為本發明之可調整光線投射距離之反射式自 行車燈裝置之一操作示意圖。 7 201024160 第四圖，為本發明之可調整光線投射距離之反射式自 行車燈裝置之另一操作示意圖。 【主要元件符號說明】 基座10 水平部101 垂直部102 螺孔103 反射罩12 反射面121 發光單元14 螺桿16For a ride or fitness, cycling is also an excellent choice. Ride a bicycle is the best tool for responding to environmental protection', but still need to consider its safety, especially at night. Since bicycles are different from steam and locomotives, they are equipped with lights before leaving the factory. They must be purchased separately by the rider. By installing the lights, the rider can not only make the rider more aware of the road ahead, but also have the function of warning other passers-by. Can increase the safety of the rider himself. At present, the bicycle light seen on the market can not be adjusted according to the user's needs. It is obviously inconvenient for the user to adjust the distance mode of the projected light depending on the road condition. SUMMARY OF THE INVENTION The present invention has been made in view of the prior art to provide a reflective bicycle light device that can adjust a light projection distance. By changing the relative position of the reflector of the reflective bicycle light device and the light-emitting unit, the distance between the projection distances of the light rays is adjusted, so that two different modes of the near-light and the far-light are achieved. 3 201024160 In order to achieve the above object, the present invention provides a reflective self-driving lamp device capable of adjusting a light projection distance for projecting light onto a road surface, the reflective lamp lamp including a base and a reflector , a lighting unit, and a driving mechanism. The reflector is disposed on the lower surface of the base, and is provided with a space of the slag and a opening communicating with the accommodating space, and the reflector has a reflecting surface facing the accommodating space . The illuminating sheet is placed on the lower surface of the pedestal and is located in the accommodating space. The illuminating illuminating light can be reflected by the reflecting surface and projected on the road surface through the opening to form a illuminating sheet. Lighting area. The driving mechanism is configured to change a horizontal relative distance between the reflective cover and the light emitting unit, and the driving mechanism changes a horizontal relative distance between the reflective cover and the light emitting unit, so that the illumination area is relatively close to the base mobile. The invention adjusts the horizontal relative position of the reflector and the light-emitting unit by moving the driving mechanism to achieve the function of adjusting different light projection distances, and the design is extremely simple, and the user can adjust the required mode at any time, so that the user can adjust the required mode at any time. The driving process is safer. [Embodiment] Referring to the first and second figures, a schematic diagram of a reflective bicycle light device capable of adjusting a light projection distance according to a preferred embodiment of the present invention is shown. The bicycle light device projects light emitted from the interior of the bicycle light onto a road surface. The reflective bicycle light device includes a base 10, a reflector 12, an illumination unit 14, and a drive mechanism 30 for varying the horizontal relative distance between the reflector 12 and the illumination unit 14. 201024160 The base 10 has a horizontal portion ιοί and a vertical portion 1〇2, the vertical portion 102 extends downward from the horizontal portion, and the vertical portion 1〇2 defines a screw hole 103. The reflector cover 12 is movably disposed on the lower surface of the horizontal portion of the base and defines an accommodation space 4 与 and an opening 50 communicating with the accommodating space 40. . The reflector 12 has a reflective surface 121 facing the receiving space 40. The reflecting surface 121 is a concave surface, and preferably may be a spherical surface, a paraboloid or an ellipsoidal surface. The light-emitting unit 14 is disposed on the lower surface of the horizontal portion 〇1 of the susceptor 10 and is located in the accommodating space 4 ,. The downward ray of the light-emitting unit 14 can be reflected by the reflective surface 121 and The opening 5 is projected onto the road surface to form an illumination zone. In this embodiment, the light-emitting unit 14 is a light-emitting diode, which is not limited in practice. The driving mechanism 30 includes a screw 16 that is screwed into the screw hole 1〇3 of the vertical portion 1〇2 and rotatably embedded in the reflector cover 12. The reflector 12 is movably mounted on the lower surface of the horizontal portion 1〇1 of the base 1 and one end of the screw 16 is threaded through the vertical portion 1〇2 and embedded in the reflector 12 . When the screw 16 is screwed inward, the reflector 12 can be horizontally moved toward the light-emitting unit 14. When the screw 16 is rotated outward, the reflecting cover 12 can be horizontally moved away from the light emitting unit 14, thereby changing the horizontal relative position of the reflecting cover 12 and the light emitting unit 14. The horizontally movable distance of the reflector cover 12 relative to the base has a certain limit 'which is limited to move within a predetermined distance d. In detail, referring first to the third figure, when the screw 16 is screwed inwardly into the 5 201024160 screw hole 103, the reflector 12 is moved in the direction of the light-emitting unit 14. When the reflector 12 is adjacent to the light-emitting unit 14, the light emitted by the light-emitting unit 14 is mainly reflected by the partial reflection surface 121 adjacent to the horizontal portion 101, and is projected forward and downward through the opening 50 to The road is on the 18th. Since the slope of the portion of the reflecting surface 121 adjacent to the horizontal portion 101 is relatively large, the illumination region projected onto the road surface 18 via the opening 50 is closer to the susceptor 10. Defining an intersection point extending vertically downward from the center of the light-emitting unit 14 to the road surface 18 is a reference point 〇, and further defining a near-end of the illumination area adjacent to the reference point 0 as a first light-projection projection sP1, The distance from the reference point 0 to the first light projection point P1 is a first distance L1. Referring to the fourth figure, when the screw 16 is screwed out of the screw hole, the reflector 12 is moved in a direction away from the light emitting unit 14. When the reflector 12 is away from the light-emitting unit 14, the light emitted by the light-emitting unit μ is mainly reflected by the partial reflection surface 121 away from the horizontal portion 101 and projected forward and downward through the opening 50 to The road surface 18 is on. Since the slope of the portion of the reflecting surface 121 away from the horizontal portion 101 is small, the illumination region projected onto the road surface 18 through the opening 50 is farther away from the base. Defining that the center of the light-emitting unit 14 extends vertically downward to the intersection of the road surface 18 is a reference point 0, and further defines a near-end of the illumination area adjacent to the reference point 为 as a second light-projection projection point four, the reference The distance from the point to the first light projection point P2 is a second distance L2. Comparing the third and fourth figures, it is apparent that the first distance L1 is smaller than the second distance L2. Therefore, in practical application, when the reflector 12 is close to the light-emitting unit 14, the projected first distance L1 is shorter, which can be used as the near-light mode of the reflective 201024160 bicycle light device of the present invention; in addition, when the reflector is When the light-emitting unit 14 is away from the light-emitting unit 14, the second distance L2 projected therefrom is long, and it can be used as the high-light mode of the reflective bicycle light device of the present invention. In summary, the reflective bicycle light device of the present invention can move the reflector 12 relative to the light-emitting unit 14 to change the light projection of the light-emitting unit 14 by the driving mechanism 3〇. The distance is far. Provide users with the ability to change the usage status at any time according to the actual road conditions and their own needs, so that the driving process is safer. In addition, in the above embodiment, the driving mechanism 3 moves the reflector 12 to change the relative distance between the reflector 12 and the light-emitting unit 14. In actual implementation, the skilled person can also move the corresponding driving mechanism. The light-emitting unit 14 changes the relative distance between the reflector 12 and the light-emitting unit 14, and the effect of the present invention can also be achieved. However, the above description is only a preferred embodiment of the present invention, and the equivalent variations and modifications made by the scope of the present invention are still covered by the patent of the present invention. Scope Protection Scope [Simple Description of the Drawings] The first figure is a perspective view of a reflective bicycle light device with adjustable light projection distance according to the present invention. Fig. 2 is a cross-sectional view showing a reflective self-lighting device of the present invention which can adjust the light projection distance. The third figure is a schematic view of the operation of the reflective self-lighting device of the present invention which can adjust the light projection distance. 7 201024160 The fourth figure is another operation diagram of the reflective self-lighting device with adjustable light projection distance according to the present invention. [Description of main component symbols] Base 10 Horizontal portion 101 Vertical portion 102 Screw hole 103 Reflector 12 Reflecting surface 121 Light-emitting unit 14 Screw 16
路面18 間距d 第一距離L1 第二距離L2 參考點0 第一光影投射點P1 第二光影投射點P2Pavement 18 Spacing d First distance L1 Second distance L2 Reference point 0 First light shadow projection point P1 Second light shadow projection point P2