1378871 六、發明說明： 【發明所屬之技術領域】 本發明係有關於一種車用頭燈結構，特別係 有關於一種具反光載板之車用頭燈結構。 【先前技術】 如第1圖所示’習知車用頭燈結構係包含有 一固定座B、一光源S、一反射罩R、一遮光板c 及一透鏡L ’該光源S係設置於該固定座B上， 該反射罩R係用以將該光源S所發出之光反射至 該透鏡L’而該遮光板C係設置於該固定座3與 該透鏡L之間’用以將部分光遮蔽，以使通過該 透鏡L之光形能符合商用規範，惟，使用該遮光 板C係會導致部分光能量損失而降低光源使用效 率’且使用該遮光板C亦會提高車用頭燈結構之 製作成本。 【發明内容】 本發明之主要目的係在於提供一種具反光载 板之車用頭燈結構’其係包含一透鏡、一反光載 板、至少一光源以及一反射罩，該透鏡係具有一 光心、一焦點及一焦距，該反光載板係設置於該 透鏡之一側，且該反光載板係具有一上表面、一 朝向該透鏡之侧面以及設於該上表面之一承載區 及一反光區’該侧面與該光心之間係具有一間 距’該間距係不大於該焦距，該光源係設置於該 1378871 反光载板之該承載區，該反射罩係罩設於該反光 載板之該承載區，且該反射罩係具有至少一朝向 該光源之反光曲面，該反光曲面係反射該光源所 發出之光，本發明係利用該反光載板控制車燈之 光形及照度，以使其符合商用規範，其功效上可 降低光能量損失及提高光源使用效率，且因無須 使用遮光板，故可大幅降低車燈之製作成本。 【實施方式】 清參閱第2及3圖’其係本發明之第一較佳 實施例，一種具反光載板之車用頭燈結構主要包 含一透鏡10、一反光載板20、至少一光源3〇以 及一反射罩40，在本實施例中’該透鏡1〇係為 平凸透鏡’且該透鏡1 0係具有一光心0、一焦點 F及一'焦距Fl’該反光載板20係設置於該透鏡 10之一侧’且該反光載板20係具有一上表面2卜 一朝向該透鏡10之侧面22以及設於該上表面21 之一承載區23及一反光區24，該侧面22與該透 鏡10之該光心Ο之間係具有一間距G，在本實施 例中’該間距G係不大於該焦距fl，較佳地，該 間距G係等於該焦距FL，該光源30係設置於該 反光載板20之該承載區23，在本實施例中，該 光源3 0係為LED ’該反射罩40係罩設於該反光 載板20之該承載區23，且該反射罩4〇係具有一 朝向該光源30之反光曲面40a，該反光曲面4〇a 5 1378871 係反射該光源3〇所發出之光，在本實施例中，該 反光曲面40a係為四分之一橢圓曲面，且該四分 之一橢圓曲面係具有一位於該承載區23之第一 焦點F1及一位於該反光區24之第二焦點F2，在 本實施例中’該光源30係設置於該四分之一橢圓 曲面之該第一焦點F1，而該四分之一橢圓曲面之 該第二焦點F2係鄰近該透鏡1〇之該焦點f，較 佳地’該四分之一橢圓曲面之該第二焦點F2係與 該透鏡10之該焦點F重疊（圖未繪出），或者，請 籲 參閱第9圖，在一具體實施例中，當該光源3〇之 數量增加時，該反射罩40之該反光曲面40a之數 量亦可對應增加，以此實施例來說，當該光源3〇 之數量增加為三個時，該反射罩40除了原有之該 反光曲面40a之外，可另增加一第一反光曲面4〇b 及一第二反光曲面40c，且在此實施例中，該第 一反光曲面40b及該第二反光曲面40c相對於原 有之該反光曲面40a係具有一偏移角度α，較佳.* 地’該偏移角度α係介於5至7度之間。請參閱 第4圖，其係顯示本發明之該車用頭燈結構作用 時之光路徑及光照度分佈圖，由第4圖之結果可 知經由該反射罩30之該反光曲面40a所反射之 光’依光程路徑係可分成兩部分，第一部份是經 由該反光曲面40a直接反射至該透鏡10之光；第 二部分是經由該反光曲面40a先反射至該反光載 6 1378871 板20之該反光區24,再經由該反光區24反射至 該透鏡10之光，本發明該反光載板2〇之該反光 區24之設計係可取代習知遮光板之設計，其功效 上可降低光能量損失及提高光源使用效率，且因 無須使用遮光板，故可大幅降低車燈之製作成本。 另外，請再參閱第4圖，其係可發現本實施 例之光照度雖可符合需求，但其光形上方係會出 現漏光情形，為進一步改善此漏光情形，請參閱 第5圖，在本實施例中，該車用頭燈結構係另包 含有一中空筒狀集光器50，該中空筒狀集光器50 係套设於該反光載板20，且位於該反射罩4〇與 該透鏡10之間，較佳地，該反光载板2〇之該反 光區24係位於該中空筒狀集光器5〇内，請參閱 第6圖，由第6圖之結果可知該中空筒狀集光器 50係可有效改善漏光情形。 請參閱第7及8圖，其係本發明之第二較佳 實知例，一種具反光載板之車用頭燈結構主要包 含一透鏡10、一反光載板20、至少一光源3〇以 及一反射罩40，本實施例之結構特徵基本上與第 一較佳實施例相同，其差異處僅在於本實施例之 該反光载板20之該上表面21係具有一第一表面 21a及一第二表面21b，在本實施例中，該第一表 面21a係為傾斜面，且該第一表面2u與該第二 表面21b之間係具有一夾角0，較佳地，該夾角 1378871 Θ係"於16 3度至16 7度之間’此外，在本實施 例中’該反光載板20係具有一第一寬度Wi，而 該第一表面（傾斜面）21a係具有一第二寬度W2， 較佳地’該第一表面（傾斜面）2ia之該第二寬度 W2係大於該第一寬度wi之一半，即w2>Wl/2, 以使車燈之輸出光形達到最佳。 本發明之保護範圍當視後附之申請專利範圍 所界定者為準，任何熟知此項技藝者，在不脫離 本發明之精神和範圍内所作之任何變化與修改，鲁 均屬於本發明之保護範圍。 【圖式簡單說明】 第1圖：習知車用頭燈結構示意圖。 第2圖.依據本發明之第一較佳實施例，一種具 反光載板之車用頭燈結構之立體圖。 第3圖·依據本發明之第一較佳實施例，該具反 光載板之車用頭燈結構之側視圖。 第4圖.依據本發明之第一較佳實施例，該具反鲁 光载板之車用頭燈結構之光路徑及光 照度分佈圖。 第5圖：依據本發明之第-較佳實施例，裴設— 中空筒狀集光器之結構示意圖。 6圖：依據本發明之第一較佳實施例，裝設一 中空筒狀集光器之光路徑及光照度分 佈圖。 8 第7圖：依據本發明之第- A 钱 < 昂一較佳實施例，一種具 反光載板之車用頭燈結構之立體圖。 第8圖：依據本發明之第二較佳實施例，該具反 光载板之車用頭燈結構之側視圖。 第9圖·依據本發明之一具體實施例，反射罩具 有多個反光曲面之結構示意圖。 【主要元件符號說明】. 10 透鏡 20 反光載板 21 上表面 2la 第一表面 21b 第.二表面 22 侧面 23 承載區 24 反光區 30 光源 40 反射罩 40a 反光曲面 40b 第一反光曲面 40c 第二反光曲面 50 中空筒狀集光器 F 焦點 FI 第一焦點 F2 第二焦點 fl 焦距 G 間距 0 光心 W1 第一寬度 W2 第二寬度 Θ 夾角 B 固定座 c 遮光板 L 透鏡 R 反射罩 S 光源 a 偏移角度1378871 VI. Description of the Invention: [Technical Field] The present invention relates to a vehicle headlight structure, and more particularly to a vehicle headlight structure having a reflective carrier. [Prior Art] As shown in Fig. 1, the conventional vehicle headlight structure includes a fixing base B, a light source S, a reflection cover R, a light shielding plate c and a lens L'. The reflector R is configured to reflect the light emitted by the light source S to the lens L', and the light shielding plate C is disposed between the fixing base 3 and the lens L to partially light Shielding so that the shape of the light passing through the lens L can meet the commercial specifications. However, the use of the visor C causes partial loss of optical energy and reduces the efficiency of use of the light source. The use of the visor C also improves the structure of the vehicle headlight. Production costs. SUMMARY OF THE INVENTION The main object of the present invention is to provide a vehicle headlight structure having a reflective carrier plate, which comprises a lens, a reflective carrier, at least one light source, and a reflector, the lens having an optical center The reflective carrier is disposed on one side of the lens, and the reflective carrier has an upper surface, a side facing the lens, and a bearing region disposed on the upper surface and a reflective surface. The area of the area has a distance from the optical center, and the spacing is not greater than the focal length. The light source is disposed in the carrying area of the 1378871 reflective carrier, and the reflector is disposed on the reflective carrier. The reflective cover has at least one reflective curved surface facing the light source, and the reflective curved surface reflects the light emitted by the light source. The present invention uses the reflective carrier to control the light shape and illumination of the light, so that It complies with commercial specifications, which can reduce the optical energy loss and improve the efficiency of light source use, and can reduce the manufacturing cost of the lamp by eliminating the need for a visor. [Embodiment] Referring to Figures 2 and 3, which are a first preferred embodiment of the present invention, a vehicle headlight structure having a reflective carrier mainly includes a lens 10, a reflective carrier 20, and at least one light source. 3〇 and a reflector 40, in the embodiment, the lens 1 is a plano-convex lens and the lens 10 has an optical center 0, a focus F and a 'focal length Fl'. The light-reflecting carrier 20 is disposed on the side of the lens 10 and has a top surface 2 facing the side surface 22 of the lens 10 and a bearing area 23 disposed on the upper surface 21 and a reflective area 24, the side surface 22 and the optical core of the lens 10 have a spacing G. In the embodiment, the spacing G is not greater than the focal length fl. Preferably, the spacing G is equal to the focal length FL. The light source 30 The light-receiving cover 40 is disposed on the carrying area 23 of the reflective carrier 20, and the reflection is disposed on the carrying area 23 of the reflective carrier 20 in the present embodiment. The cover 4 has a reflective curved surface 40a facing the light source 30, and the reflective curved surface 4〇a 5 1378871 reflects the light source 3〇 In the present embodiment, the reflective curved surface 40a is a quarter elliptical curved surface, and the quarter elliptical curved surface has a first focus F1 at the carrying area 23 and a reflective The second focus F2 of the area 24, in the embodiment, the light source 30 is disposed at the first focus F1 of the quarter elliptical surface, and the second focus F2 of the quarter elliptical surface is adjacent The focus f of the lens 1 ,, preferably the second focus F2 of the quarter elliptical surface overlaps the focus F of the lens 10 (not shown), or please refer to the ninth In a specific embodiment, when the number of the light sources 3〇 is increased, the number of the reflective curved surfaces 40a of the reflector 40 may be correspondingly increased. In this embodiment, when the number of the light sources 3 is increased, In addition to the original reflective surface 40a, the reflector 40 can be additionally provided with a first reflective curved surface 4〇b and a second reflective curved surface 40c, and in this embodiment, the first reflective The curved surface 40b and the second reflective curved surface 40c are opposite to the original reflective curved surface 40a A shift angle α, preferably. To * 'of the line shift angle [alpha] between 5 and 7 degrees. Referring to FIG. 4, it is a light path and an illuminance distribution diagram of the vehicular headlight structure of the present invention. The result of FIG. 4 shows the light reflected by the reflective curved surface 40a of the reflector 30. The path of the optical path can be divided into two parts, the first part is the light directly reflected to the lens 10 via the reflective curved surface 40a; the second part is reflected by the reflective curved surface 40a to the reflective board 6 1378871 The reflective area 24 is reflected by the reflective area 24 to the light of the lens 10. The design of the reflective area 24 of the reflective carrying board 2 of the present invention can replace the design of the conventional light shielding plate, and the efficiency can reduce the light energy. Loss and improve the efficiency of light source use, and because the visor is not required, the manufacturing cost of the lamp can be greatly reduced. In addition, please refer to FIG. 4 again, which can be found that although the illuminance of the embodiment can meet the requirements, light leakage occurs above the light shape. To further improve the light leakage, please refer to FIG. 5, in this embodiment. For example, the vehicular headlight structure further includes a hollow cylindrical concentrator 50, and the hollow cylindrical concentrator 50 is sleeved on the reflective carrier 20, and is located at the reflective cover 4 and the lens 10. Preferably, the reflective area 24 of the reflective carrier 2 is located in the hollow cylindrical concentrator 5 ,. Please refer to FIG. 6 , and the hollow cylindrical collection is known from the result of FIG. 6 . The device 50 can effectively improve the light leakage situation. Referring to FIGS. 7 and 8 , which are a second preferred embodiment of the present invention, a vehicle headlight structure having a reflective carrier includes a lens 10 , a reflective carrier 20 , at least one light source 3 , and A reflective cover 40, the structural features of the embodiment are substantially the same as those of the first preferred embodiment, except that the upper surface 21 of the reflective carrier 20 of the embodiment has a first surface 21a and a The second surface 21b, in the embodiment, the first surface 21a is an inclined surface, and the first surface 2u and the second surface 21b have an angle 0, preferably, the angle 1378871 is " between 16 3 degrees and 16 7 degrees' Further, in the present embodiment, the reflective carrier 20 has a first width Wi, and the first surface (inclined surface) 21a has a second width. W2, preferably, the second width W2 of the first surface (inclined surface) 2ia is greater than one half of the first width wi, i.e., w2 > Wl/2, to optimize the output light shape of the lamp. The scope of the present invention is defined by the scope of the appended claims, and any changes and modifications made by those skilled in the art without departing from the spirit and scope of the invention are protected by the present invention. range. [Simple description of the diagram] Figure 1: Schematic diagram of the structure of the headlights for the vehicle. Fig. 2 is a perspective view showing the structure of a headlight for a vehicle having a reflective carrier according to a first preferred embodiment of the present invention. Fig. 3 is a side elevational view of the vehicle headlamp structure with a reflective carrier according to a first preferred embodiment of the present invention. Fig. 4 is a view showing a light path and a illuminance distribution of a vehicle headlight structure having an anti-rubber carrier according to a first preferred embodiment of the present invention. Fig. 5 is a schematic view showing the structure of a hollow cylindrical concentrator according to a first preferred embodiment of the present invention. Figure 6 is a diagram showing the arrangement of light paths and illuminances of a hollow cylindrical concentrator in accordance with a first preferred embodiment of the present invention. 8 Fig. 7 is a perspective view showing a structure of a headlight for a vehicle having a reflective carrier, according to a first embodiment of the present invention. Figure 8 is a side elevational view of the vehicle headlamp structure with a reflective carrier according to a second preferred embodiment of the present invention. Figure 9 is a schematic view showing the structure of a plurality of reflective curved surfaces in accordance with an embodiment of the present invention. [Major component symbol description]. 10 Lens 20 Reflective carrier 21 Upper surface 2la First surface 21b Second surface 22 Side 23 Load area 24 Reflective area 30 Light source 40 Reflector 40a Reflective curved surface 40b First reflective curved surface 40c Second reflective Curve 50 hollow cylindrical concentrator F focus FI first focus F2 second focus fl focal length G spacing 0 optical center W1 first width W2 second width 夹 angle B fixed seat c visor L lens R reflector S light source a partial Shift angle