201131117 六、發明說明： 【發明所屬之技術領域】 本發明關於一種照明燈具。 【先前技術】 圖1為顯示一習知照明燈具的構件分解圖。如圖1所示， 台灣專利公告第TWM361592號揭露一種照明燈具1〇〇，包含 一燈殼102、一外燈罩104、一固定架106、一發光二極體108、 一反光罩110及一擴散片112。發光二極體1〇8設於燈殼102及 外燈罩104的内表面，且反光罩110覆蓋於發光二極體1〇8的 外圍。擴散片112上形成一擴散層，擴散層能折射光線形成 擴散作用，以柔和由發光二極體108投射出光線的照明亮度 與強度，避免高亮度及強度的光源刺激眼睛造成不適。然 而’上述藉由擴散片112柔和光線的效果，同時也會大幅降 低照明燈具100的出光亮度。 另外，台灣專利公告第TWI244578號也揭露一種燈具， 該燈具包含一圓心與燈泡轴心重合的圓形遮光板以遮擋部 分光線，獲得避免眼睛直視燈源強光的效果。然而，此一設 計同樣會大幅降低燈具的出光亮度。 [S] 4 201131117 【發明内容】 本發锻供L騰具射敎燈源強光 傷σ人眼且具有良好的出光亮度。 本發月的其他目的和優點可以從本發明所揭露的技術 特徵中得到進一步的了解。 為達上述之-或部份或全部目的或是其他目的，本發明 之一實施例提供-種照明燈具，包含一燈罩、一光源及一透 • 光片。燈罩具有相對的—第-端及-第二端，且第二端具有 -開口。光源設置於第-端且適於發出一照明光束。透光片 設置於第二端並覆蓋開口。透光片的中央區域形成為一反光 區域，反光區域的反射率由中心往周緣遞減，且反光區域大 致疊合光源的一部分不透光。 於一實施例中，反光區域可由形成於透光片面向光源一 側的光反射層所構成。於另一實施例中，反光區域可為一光 _ 反射材料所構成。 於一實施例中’光源的中心與反光區域的中心位置大致 重合，且燈罩可具有一拋物面外形。 於一實施例中，燈罩包含設置於第一端的一反射元件， 反射元件適於在第一端與第二端之間移動用以調整照明光 束的光形。 本發明之另一實施例提供一種照明燈具，包含一燈 罩、一光源、一透光片及一光反射層。燈罩具有相對的一第 [s] 5 201131117 一端及一第二端，且第二端具有一開口。光源設置於第一端 且適於發出一照明光束。透光片設置於第二端並覆蓋開口。 透光片包含位於中央的一反光區域及位於反光區域周邊的 一透明區域，其中反光區域的反射率由中心往周緣遞減，且 反光區域大致疊合光源的一部分不透光。光反射層形成於燈 罩面向光源的一側，其中光源發出的部分照明光束被反光區 域反射後，再經由光反射層反射至外界。 基於上述，在本發明的上述實施例中至少具有以下甘 中個優點，因為反光區域大致疊合光源的部分不透光，如 此可提供遮蔽光源的效果，避免使用者在近距離直視照明燈 具時被強光傷害到眼睛。另外，雖然反光區域大致疊合光源 的部分不透光，但入射至反光區域的光線會被反光區域反射 回燈罩，再經由燈罩的光反射層集中反射至外界，因此仍然 可以提供極佳的亮度。 鲁本發明的其他目的和優點可以從本發明所揭露的技術 特徵中得到進-步的了解。為讓本發明之上述和其他目的、 特徵和優點能更明顯易懂，下文特舉實施例並配合所附圖 式’作詳細說明如下。 【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σ參考圖式之實施例的詳細說明巾，將可清楚的呈現。 201131117 以下實施例中所提到的方向用語，例如：上、下、左、右、 前或後等，僅是參考附加圖式的方向。因此，使用的方向用 舍是用來說明並非用來限制本發明。 圖2為依本發明一實施例之照明燈具ίο的立體示意 圖，圖3為照明燈具1〇的部分剖面示意圖。請同時參照圖2 及圖3，照明燈具10包含一燈罩12、一光源14及一透光片 16 ’且照明燈具1〇例如亦可包含一握持部18而構成一手 電茼。燈罩12具有相對的一第一端p及一第二端q，且第 二端Q具有一開口 22。光源14設置於第一端P，透光片16 设置於第二端Q並覆蓋開口 22。於本實施例中，透光片16 包含大致位於中央的一反光區域16a及位於反光區域丨如周 邊的一透明區域16b，反光區域16a的反射率由中心c往周 緣Η遞減，且反光區域16a大致疊合光源14的部分〇不透 光。另外，一光反射層24形成於燈罩12面向光源14的一 側。因此，如圖4所示，於光源發出的照明光束中，一 部分照明光束(例如n)直接穿透透明區域16b，一部分照明 光束(例如12)經由光反射層24反射後穿透透明區域16b，— 部分照明光束(例如η)先由反光區域10a反射，再經由光反 射層24反射後穿透透明區域16b至外界。另外，因反光區 域16a的反射率由中心c往周緣H遞減(透射率往周緣㈣ 增）’故入射至反光區域丨6a周緣的光線，一部分照明光束(例 如14)可直接穿透透光片16至外界，另一部分照明光束(例如 201131117 13)先由反光區域16a反射，再經由光反射層24反射後穿透 透明區域16b至外界。201131117 VI. Description of the Invention: TECHNICAL FIELD OF THE INVENTION The present invention relates to a lighting fixture. [Prior Art] Fig. 1 is an exploded perspective view showing a conventional lighting fixture. As shown in FIG. 1 , Taiwan Patent Publication No. TWM361592 discloses a lighting fixture 1A including a lamp housing 102, an outer lamp cover 104, a fixing frame 106, a light emitting diode 108, a reflector 110 and a diffusion. Slice 112. The light-emitting diodes 1 to 8 are disposed on the inner surfaces of the lamp housing 102 and the outer lamp cover 104, and the reflector 110 covers the periphery of the light-emitting diodes 1 to 8. A diffusion layer is formed on the diffusion sheet 112. The diffusion layer can refract light to form a diffusion effect to softly illuminate the illumination brightness and intensity of the light emitted by the LEDs 108, thereby preventing the high brightness and intensity of the light source from irritating the eyes. However, the above effect of softening the light by the diffusion sheet 112 also greatly reduces the light-emitting brightness of the lighting fixture 100. In addition, Taiwan Patent Publication No. TWI244578 also discloses a lamp comprising a circular louver whose center coincides with the axis of the bulb to block part of the light, and to obtain an effect of avoiding direct light from the light source. However, this design also significantly reduces the brightness of the luminaire. [S] 4 201131117 [Summary of the Invention] This forging L light source has a strong light damage σ human eye and has a good light output brightness. Other objects and advantages of this month may be further understood from the technical features disclosed herein. In order to achieve the above-mentioned or some or all of the objectives or other objects, an embodiment of the present invention provides a lighting fixture comprising a lampshade, a light source and a light transmitting sheet. The lampshade has opposing - first end and - second end, and the second end has an opening. The light source is disposed at the first end and is adapted to emit an illumination beam. The light transmissive sheet is disposed at the second end and covers the opening. The central portion of the light-transmissive sheet is formed as a reflective region, and the reflectance of the reflective region is decreased from the center toward the periphery, and the reflective region is substantially opaque to a portion of the laminated light source. In one embodiment, the reflective area may be formed by a light reflecting layer formed on the side of the light-transmitting sheet facing the light source. In another embodiment, the reflective area can be constructed of a light-reflecting material. In one embodiment, the center of the light source substantially coincides with the center of the reflective area, and the shade can have a parabolic profile. In one embodiment, the lamp cover includes a reflective member disposed at the first end, the reflective member adapted to move between the first end and the second end for adjusting the shape of the illumination beam. Another embodiment of the present invention provides a lighting fixture including a lamp cover, a light source, a light transmissive sheet, and a light reflecting layer. The lampshade has an opposite end [s] 5 201131117 and a second end, and the second end has an opening. The light source is disposed at the first end and is adapted to emit an illumination beam. The light transmissive sheet is disposed at the second end and covers the opening. The light transmissive sheet comprises a reflective area at the center and a transparent area at the periphery of the reflective area, wherein the reflectivity of the reflective area decreases from the center to the periphery, and the reflective area substantially opaque to a portion of the light source. The light reflecting layer is formed on a side of the lamp cover facing the light source, wherein a part of the illumination beam emitted by the light source is reflected by the reflective area, and then reflected to the outside through the light reflecting layer. Based on the above, at least the following advantages are obtained in the above embodiments of the present invention, because the reflective area substantially opaque to the portion of the light source, which provides the effect of shielding the light source, preventing the user from looking directly at the lighting fixture at close range. Damaged to the eyes by glare. In addition, although the reflective area is substantially opaque to the portion of the light source, the light incident on the reflective area is reflected back to the lamp cover by the reflective area, and is concentrated and reflected to the outside through the light reflecting layer of the lamp cover, thereby still providing excellent brightness. . Other objects and advantages of the invention can be further understood from the technical features disclosed herein. The above and other objects, features, and advantages of the present invention will become more apparent from the description of the appended claims. [Embodiment] The above-described and other technical contents, features, and effects of the present invention will be apparent from the following detailed description of the embodiments of the present invention. 201131117 The directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, etc., are only directions referring to the additional drawings. Therefore, the orientations used are for the purpose of illustration and are not intended to limit the invention. 2 is a perspective view of a lighting fixture ίο according to an embodiment of the present invention, and FIG. 3 is a partial cross-sectional view of the lighting fixture 1 。. Referring to FIG. 2 and FIG. 3 simultaneously, the lighting fixture 10 includes a lamp cover 12, a light source 14 and a light-transmissive sheet 16', and the lighting fixture 1 can also include a grip portion 18 to form a flashlight. The lamp cover 12 has a first end p and a second end q opposite to each other, and the second end Q has an opening 22. The light source 14 is disposed at the first end P, and the light transmissive sheet 16 is disposed at the second end Q and covers the opening 22. In the present embodiment, the light-transmissive sheet 16 includes a reflective region 16a substantially at the center and a transparent region 16b at the reflective region, such as the periphery. The reflectance of the reflective region 16a decreases from the center c to the peripheral edge ,, and the reflective region 16a A portion of the substantially overlapping light source 14 is opaque. Further, a light reflecting layer 24 is formed on one side of the globe 12 facing the light source 14. Therefore, as shown in FIG. 4, among the illumination beams emitted by the light source, a part of the illumination beam (for example, n) directly penetrates the transparent region 16b, and a part of the illumination beam (for example, 12) is reflected by the light reflection layer 24 and penetrates the transparent region 16b. - A portion of the illumination beam (e.g., η) is first reflected by the reflective area 10a and then reflected by the light reflecting layer 24 to penetrate the transparent area 16b to the outside. In addition, since the reflectance of the reflective region 16a decreases from the center c to the peripheral edge H (the transmittance increases to the periphery (four)), the light incident on the periphery of the reflective region 丨6a, a part of the illumination beam (for example, 14) can directly penetrate the transparent sheet. 16 to the outside, another part of the illumination beam (for example, 201131117 13) is first reflected by the reflective area 16a, and then reflected by the light reflection layer 24 and penetrates the transparent area 16b to the outside.
藉由上述實施例之設計，因為反光區域16a大致疊合光 源14的部分〇不透光，如此可提供遮蔽光源14的效果，避 免使用者在近距離直視照明燈具10時被強光傷害到眼睛。 另外，雖然反光區域16a大致疊合光源14的部分〇不透光， 但入射至反光區域16a的光線會被反光區域16a反射回燈罩 12 ’再經由燈罩12的光反射層24集中反射至外界，因此仍 然可以提供極佳的亮度。 於一實施例中’反光區域16a可由形成於透光片μ面向 光源14 一側的光反射層所構成’且該光反射層例如可為一 銀鍍層。於另一實施例中，反光區域16a亦可為一光反射材 料所構成。 另外，於一實施例中，光源14的中心與反光區域16& 的中心位置大致重合，且燈罩12可具有一拋物面外形。 另外，於一實施例中，燈罩可包含設置於該第—端的一 反射元件’反射猶適於在第-端與第二端之間移動用以調 整照明光束的光形。進-步而言’可_一旋轉機構件使反 射元件往透光片拉近或拉遠，然:本發明不以此為限，只要是 能達成調整反射元件位置的機構件即可。舉例來說，a反射 元件往透光脉近’絲Η發出較為發⑽光束， 範圍較廣’當反射元件錢光W遠，絲Μ發出較為狹 201131117 窄的光束’其㈣細較姐光強度較大，藉此，使用者可 依需求而調整光束的大小與強度。 惟以上所述者，僅為本侧之較佳實施躺已，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範圍 及發明說_容所作之簡單的等效變化與修飾，皆仍屬本發 明專利涵蓋之範圍内。另外，本發明的任—實施例或申請專 利範圍不須達成本發明所揭露之全部目的或優點或特點。此 • 外，摘要部分和標題僅是用來辅助專利文件搜尋之用，並非 用來限制本發明之權利範圍。 【圖式簡單說明】 圖1為顯示一習知照明燈具的構件分解圖。 圖2為依本發明一實施例之照明燈具的立體示意圖，圖 3為照明燈具的部分剖面示意圖。 目4為顯示依本㈣—實闕之照鴨具的光路示意 ，圖。 【主要元件符號說明】 10 照明燈具 16b 透明區域 12 燈罩 18 握持部 14 光源 22 開口 16 透光片 24 光反射層 16a 反光區域 100 照明燈具 t S3 9 201131117 102 燈殼 104 外燈罩 106 固定架 108 發光二極體 110 反光罩 112 擴散片 11-14 光線 C 中心 Η 周緣 Ο 反光區域疊合光源部分 Ρ 第一端 Q 第二端With the design of the above embodiment, since the reflective region 16a substantially overlaps the portion of the light source 14 and is opaque, the effect of shielding the light source 14 can be provided, thereby preventing the user from being damaged by the strong light when looking directly at the illumination device 10 at a close distance. . In addition, although the reflective region 16a is substantially opaque to the portion of the light source 14, the light incident on the reflective region 16a is reflected back to the globe 12' by the reflective region 16a and then concentratedly reflected to the outside through the light reflecting layer 24 of the globe 12. Therefore, excellent brightness can still be provided. In one embodiment, the 'reflective region 16a' may be formed of a light-reflecting layer formed on the side of the light-transmitting sheet μ facing the light source 14 and the light-reflecting layer may be, for example, a silver plating layer. In another embodiment, the reflective area 16a can also be constructed of a light reflective material. Additionally, in one embodiment, the center of the light source 14 substantially coincides with the center position of the reflective regions 16& and the globe 12 can have a parabolic profile. In addition, in an embodiment, the lamp cover may include a reflective element disposed at the first end to reflect a shape suitable for moving between the first end and the second end to adjust the illumination beam. In the case of the step-by-step, the rotating member can bring the reflecting member closer to or away from the light-transmitting sheet. However, the present invention is not limited thereto, as long as the mechanical member for adjusting the position of the reflecting member can be achieved. For example, a reflective element emits a relatively light (10) beam toward the light-transmitting pulse, and the range is wider. 'When the reflective element is light, the wire is narrower. The narrower beam of the 201131117 is narrower. Larger, the user can adjust the size and intensity of the beam as needed. However, the above description is only for the preferred embodiment of the present invention, and the scope of the present invention cannot be limited thereto, that is, the simple equivalent change and modification made by the invention according to the scope of the invention and the invention. All remain within the scope of the invention patent. In addition, all of the objects or advantages or features of the present invention are not required to be construed as the invention. In addition, the abstract sections and headings are only used to assist in the search of patent documents and are not intended to limit the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exploded view showing the structure of a conventional lighting fixture. 2 is a perspective view of a lighting fixture according to an embodiment of the invention, and FIG. 3 is a partial cross-sectional view of the lighting fixture. Item 4 is a schematic diagram showing the light path of the ducks according to this (four)-the real one. [Main component symbol description] 10 Lighting fixture 16b Transparent area 12 Lampshade 18 Grip portion 14 Light source 22 Opening 16 Translucent sheet 24 Light reflecting layer 16a Reflecting area 100 Lighting fixture t S3 9 201131117 102 Lamp housing 104 Outer lamp cover 106 Fixing frame 108 Light-emitting diode 110 Reflector 112 Diffuser 11-14 Light C Center Η Peripheral Ο Reflective area superimposed light source part Ρ First end Q Second end