1260381 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種照明裝置，特別是關於一種指向性 照明裝置。 【先前技術】 隨著國民所得逐年增加，家庭電器用具的普及化，在 現代豕庭生活中，照明裝置已不再如以往僅以單純全面性 # 照明為目的，而是具有裝飾、氣氛營造、以及特殊局部照 明等等不同功能。 以一般辦公室常用的日光燈具i為例，如圖i所示， 日光燈具1主要包含一座體n、複數日光燈管12、以及 一反光罩13。其中，複數日光燈管12係設置於座體丨丨内， 反光罩13係與座體Η接合。而反光罩13係具有複數反 光片131，以將日光燈管12所發射之光線反射到不同的角 • 度，能使室内的亮度增加。 藉由反光罩13,日光燈具i會增加光線射出的角度， 使得光線照射的面積，係大於日光燈具i的面積，因此較 適合在全面性地照明中使用，例如是居家或辦公室等等， 只要一個或數個日光燈具i，即可將大區域的面積照亮。 如圖2所示，由於日光燈具丨為發散性的燈具，因此， 與日光燈具1距離愈遠（d2>dl)，照射面積則愈大 (a2>Ai)。而照射面積愈大，使用者接受到的亮度也就愈 小。如此一來，使用者若與日光燈具i距離愈遠，所需要 1260381 之日光燈管12之功率也要愈大，才能讓使用者具有足夠 的亮度進行閱讀或工作。 在簡報室開會時，常會碰到前面有人正在使用投影 機，坐在後方的人則打開頭頂上日光燈具1以觀看手中資 料。但是往往會因為日光燈具1會將光線散射至較大的區 域，很容易就會影響了前方投影機畫面的清晰度，坐在後 方的人只好放棄看資料的念頭。若去購買聚光燈等其他照 明裝置來取代原有的日光燈具1，則又會增加了額外的費 用。 故，業者若能製造出具有指向性（Directional)之照 明裝置，不但可以進行局部照明，也可以提高照明裝置於 固定距離下之亮度。 有鑑於上述課題，本案發明人爰因於此，亟思一種可 具有指向性之「指向性照明裝置」。 【發明内容】 有鑑於上述課題，本發明之目的為提供一種具有指向 性之照明裝置，可以提昇相同照射距離下之亮度。 緣是，為達上述目的，依本發明之指向性照明裝置， 其係包含一殼體、一光學元件、以及至少一光源。其中， 殼體係具有一開口。光學元件係覆蓋開口，以形成一容置 空間，光學元件係具有一第一表面以及一與第一表面相對 之第二表面，第一表面具有至少一菲涅爾紋路區。光源係 設置於容置空間。 1260381 承上所述，因依本發明之指向性照明裝置，其光學元 件上係具有至少一菲淫爾紋路區。與習知技術相比，光學 元件上之菲涅爾紋路區，能將光源發出之光線折射後，形 成平行之光束並射至預定之方向。由於為平行光束，因 此，使用相同功率之光源時，通過光學元件後之光束在一 預定距離下，會比習知照明裝置之亮度來得高，故可降低 照明裝置内之光源功率，以節省費用的開銷。而且，光線 能指向一定方向，以進行局部照明而不會使其他地方的亮 度增加，甚至造成干擾，適合利用於簡報室、或沖洗照片 之暗室等等。再者，指向性照明裝置之菲淫爾紋路區，還 可利用不同焦距之菲涅爾紋路，將光源所發出之光線部份 發散部份聚焦，於適當的距離下，即可使得光束環繞於被 照射物體上，而成為具特色之裝飾性照明。 【實施方式】 以下將參照相關圖式，說明依本發明之指向性照明裝 置之數個實施例。 第一實施例 如圖3所示，指向性照明裝置2係包含一殼體21、一 光學元件22、以及至少一光源23。 殼體21係具有一開口 211。光學元件22係覆蓋開口 211，以形成一容置空間212。光學元件22係具有一第一 表面221以及一與第一表面221相對之第二表面222，第 1260381 一表面221具有至少一菲淫爾紋路d 223。圖3中之菲、、里 爾紋路區223 # A 一-立夕本- / 糸為一不思之表不，實際上之菲涅爾紋路區 223之紋路相當細小，甚至連肉眼也難以辨識。1260381 IX. Description of the Invention: [Technical Field] The present invention relates to a lighting device, and more particularly to a directional lighting device. [Prior Art] With the increase in national income and the popularization of household electrical appliances, in the modern life of the court, the lighting device is no longer just for the purpose of pure comprehensive lighting, but with decoration and atmosphere. Different features such as special local lighting. Taking the daylight lamp i commonly used in a general office as an example, as shown in FIG. 1, the daylight lamp 1 mainly includes a body n, a plurality of fluorescent tubes 12, and a reflector 13. The plurality of fluorescent tubes 12 are disposed in the seat body, and the reflector 13 is coupled to the seat body. The reflector 13 has a plurality of reflectors 131 for reflecting the light emitted by the fluorescent tubes 12 to different angles to increase the brightness of the room. With the reflector 13, the daylight lamp i increases the angle at which the light is emitted, so that the area illuminated by the light is larger than that of the daylight lamp i, so it is more suitable for use in comprehensive lighting, such as home or office, etc. One or several daylight fixtures i can illuminate the area of a large area. As shown in Fig. 2, since the daylight lamp is a divergent lamp, the farther away from the daylight lamp 1 (d2 > dl), the larger the irradiation area (a2 > Ai). The larger the illumination area, the smaller the brightness the user receives. In this way, the farther the user is from the daylight fixture i, the greater the power of the 1260381 fluorescent tube 12 is required to allow the user to have sufficient brightness for reading or working. When meeting in the briefing room, it is often encountered that someone is using the projector in front, and the person sitting at the back opens the daylight fixture 1 on the top of the head to view the data in hand. However, it is often because the daylight fixture 1 will scatter light to a larger area, which will easily affect the clarity of the front projector screen, and the person sitting behind will have to give up the idea of reading the data. If you go to buy other lighting fixtures such as spotlights instead of the original daylight fixtures 1, additional costs will be added. Therefore, if the manufacturer can manufacture a lighting device with directivity, it can not only perform partial illumination, but also improve the brightness of the illumination device at a fixed distance. In view of the above problems, the inventor of the present invention has a directional lighting device that can have directivity. SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a illuminating device having directivity, which can improve brightness at the same irradiation distance. In order to achieve the above object, a directional illumination device according to the present invention comprises a housing, an optical component, and at least one light source. Wherein, the housing has an opening. The optical component covers the opening to form an accommodating space, and the optical component has a first surface and a second surface opposite the first surface, the first surface having at least one Fresnel zone. The light source is disposed in the accommodating space. 1260381 As stated above, the directional lighting device according to the present invention has at least one Philippine ridge region on its optical component. In contrast to conventional techniques, the Fresnel zone on the optical element refracts the light from the source to form a parallel beam that strikes the intended direction. Since the light beam is a parallel beam, when the light source of the same power is used, the light beam passing through the optical element is higher than the brightness of the conventional illumination device at a predetermined distance, so that the power of the light source in the illumination device can be reduced, thereby saving the cost. s expenses. Moreover, the light can be directed in a certain direction for local illumination without increasing the brightness or even interference in other places, and is suitable for use in a briefing room, or in a dark room for rinsing photos, and the like. Furthermore, the Philippine lure region of the directional illumination device can also use the Fresnel pattern of different focal lengths to focus the divergent part of the light emitted by the light source, and at a proper distance, the beam can be surrounded by the beam. The illuminated object becomes a characteristic decorative lighting. [Embodiment] Hereinafter, several embodiments of a directional illumination device according to the present invention will be described with reference to the related drawings. First Embodiment As shown in Fig. 3, the directional lighting device 2 comprises a housing 21, an optical element 22, and at least one light source 23. The housing 21 has an opening 211. The optical element 22 covers the opening 211 to form an accommodating space 212. The optical element 22 has a first surface 221 and a second surface 222 opposite the first surface 221, and a surface 221 of the 1260381 has at least one Philippine texture d 223. In Fig. 3, the Philippine and Lille pattern area 223 # A一-立夕本- / 糸 is a non-thinking table. In fact, the grain of the Fresnel pattern area 223 is quite small, and even the naked eye is difficult to identify. .
一、^實施例中，光學元件22之材質係可為一玻璃、或 塑膠。若以塑膠作為光學元件22之材質時，光學元件 22之厚度會較薄，因此，如圖4所示，本實施例中，指向 性妝明裝置2可更包含一透明基板24，其係與光學元件 22之第二表面222貼合，以支撐光學元件22，並且使得 透明基板24位於光學元件22與光源23之間。 其中’透明基板24係可泛指任何可透光之板材。舉 例而言，透明基板24可以是一剛性（rigid )基板。同時， 透明基板24亦可以是塑膠（plastic)基板或是玻璃基板。 其中，透明基板24之材質可為聚破酸酯（polycarbonate， PC)、聚酯（p〇lyester，PET)、環烯共聚物（cyclic olefin copolymer，COC)、或金屬鉻合物基材-環烯共聚物 (metallocene-based cyclic oleHn copolymer，mCOC )等等。 再請參照圖4，光源23係設置於容置空間212，本實 施例中，光源23可為一燈管、一燈泡、< 冷陰極螢光燈 (CCFL)、一發光二極體（LED)、或一發光二極體陣歹 (LED Array )。另外，以光源23之外形來分，光源23也 可為一點狀光源、一線性光源、或一環狀光源。本實施例 中，光源23係以一日光燈管為例，其係為線性光源。 本實施例中，光源23之數量可實質上等同於菲涅爾 紋路區223的數量，且光源23係鄰設在相對於菲涅爾紋 1260381 ，區如的位置。因此，為了配合線性光源 5例中，光學元件22具有單—菲靴Μ區‘且tIn the embodiment, the material of the optical component 22 can be a glass or a plastic. When plastic is used as the material of the optical element 22, the thickness of the optical element 22 is thin. Therefore, as shown in FIG. 4, in the embodiment, the directional clearing device 2 may further include a transparent substrate 24, which is The second surface 222 of the optical element 22 is conformed to support the optical element 22 such that the transparent substrate 24 is positioned between the optical element 22 and the light source 23. Wherein the 'transparent substrate 24' can be broadly referred to as any light transmissive sheet. For example, the transparent substrate 24 can be a rigid substrate. Meanwhile, the transparent substrate 24 may also be a plastic substrate or a glass substrate. The material of the transparent substrate 24 may be a polycarbonate (PC), a polyester (PET), a cyclic olefin copolymer (COC), or a metal chromium composite substrate-ring. Metallocene-based cyclic oleHn copolymer (mCOC) and the like. Referring to FIG. 4, the light source 23 is disposed in the accommodating space 212. In this embodiment, the light source 23 can be a light tube, a light bulb, a cold cathode fluorescent lamp (CCFL), and a light emitting diode (LED). ), or a light-emitting diode array (LED Array). Further, the light source 23 may be a light source 23, and the light source 23 may be a point light source, a linear light source, or an annular light source. In this embodiment, the light source 23 is exemplified by a fluorescent tube, which is a linear light source. In this embodiment, the number of the light sources 23 may be substantially equal to the number of Fresnel texture regions 223, and the light source 23 is disposed adjacent to the Fresnel pattern 1260381. Therefore, in order to cooperate with the linear light source, in the fifth example, the optical element 22 has a single-figure shoe area ‘and t
(Unear.esneO ^圖:戶斤示’菲㈣紋路區223平行光線射出面係具 稷數一角凸部2231，而三角凸部2231之 、 係可任意調整，而使得出射光線為指向性光線吉 ^行光、斜向平行光、或是發散光。於本實施例中^ ^ 先線穿透菲㈣紋路區223後，係形成直向 田β f 23所發出之光線，能有效地平行分佈而非散射 处’故於蚊麟下之亮度，可„知之日光燈具來得亮。 產二實施例 請參考圖5，若調整光學元件22之菲淫爾故路區似 上之硬數二角凸部2231之角度及其大小，則 ^爾紋路區223之平行光線產生—偏折角度，指 向性光線。 复1實施例 如圖6所示，光學元件2 2之菲;里爾紋路區2 2 3係具 有至少-焦距，本實施财，菲淫較 焦，為例，並前複數三角凸部則之角度及大H 使付先源23所發出光線發散至兩側，而被照射之物體可 具有光環般之光束環射被照射物體。 另外，本實施例t，光學元件22係位於透明基板以 1260381 與光源23之間。 第四實施例 請參照圖7,光學元件22之第一表面221係可具有複 數菲涅爾紋路區223。本實施例中，係具有二個菲涅爾紋 路區223，且其紋路係分別為一直線型菲涅爾紋路。當然， 菲涅爾紋路可依產品之實際需求而設定，例如一個為直線 型菲涅爾紋路，另一個則是同心圓型菲涅爾紋路。另外， 透明基板24係與光學元件22之第一表面221貼合。 本實施例中，光源23係以二個線性日光燈為例’其 係平行於一直線型菲涅爾紋路來設置。調整適當之三角凸 部2231之角度及大小後，可使鄰設的二個光源23之光 線，分別穿透菲涅爾紋路區223後，往不同的方向偏斜。 第五實施例 如圖8所示，光學元件22’之第一表面221係可具有 複數菲涅爾紋路區223’，本實施例中係以四個菲涅爾紋路 區223’為例，其紋路係分別為一同心圓型（Concentric) 菲涅爾紋路。另外，光源23’係以複數點狀光源為例，例 如是發光二極體陣列。而光源23’之數量係實質上等同於 菲涅爾紋路區223’的數量，且光源23’係鄰設在相對於菲 涅爾紋路區223’的位置。當光源穿過光學元件22’上之菲 涅爾紋路區223’後，則形成指向性光束。 綜上所述，本發明之指向性照明裝置，其光學元件上 1260381 係具有至少一菲涅爾紋路區。與習知技術相比，光學元件 上之菲涅爾紋路區，能將光源發出之光線折射後，形成平 行之光束並射至預定之方向。由於為平行光束，因此，使 用相同功率之光源時，通過光學元件後之光束在一預定距 離下，會比習知照明裝置之亮度來得高，故可降低照明裝 置内之光源功率，以節省費用的開銷。而且，光線能指向 一定方向，以進行局部照明而不會使其他地方的亮度增 加，甚至造成干擾，適合利用於簡報室、或沖洗照片之暗 室等等。再者，指向性照明裝置之菲涅爾紋路區，還可利 用不同焦距之菲涅爾紋路，將光源所發出之光線部份發散 部份聚焦，於適當的距離下，即可使得光束環繞於被照射 物體上，而成為具特色之裝飾性照明。 以上所述僅為舉例性，而非為限制性者。任何未脫離 本發明之精神與範疇，而對其進行之等效修改或變更，均 應包含於後附之申請專利範圍中。 【圖式簡單說明】 圖1係為習知日光燈具之一示意圖； 圖2係為習知日光燈具之光束發散導致距離愈遠照射 面積愈大之一示意圖； 圖3係為本發明之指向性照明裝置之一示意圖，其中 光源係為線性光源，菲涅爾紋路區係為單一直線型菲涅爾 紋路； 圖4係為圖3之指向性照明裝置沿直線A-A’之一剖面 11 !26〇38l 示意圖；(Unear.esneO ^ Figure: Hu Jin's Philippine (four) grain area 223 parallel light exit surface with a number of corners of the convex part 2231, and the triangular convex part 2231 can be arbitrarily adjusted, so that the outgoing light is directional light In the present embodiment, after the first line penetrates the phenanthrene (four) grain region 223, the light emitted by the straight field β f 23 is formed, which can be effectively parallelized. Instead of the scattering area, the brightness of the mosquito can be brightened. The solar light fixture can be brightened. For the second embodiment, please refer to Figure 5. If the optical element 22 is adjusted, the Philippine sinus area is like a hard number. The angle of the portion 2231 and its size, the parallel light of the pattern region 223 is generated - the deflection angle, the directional light. The first embodiment is as shown in Fig. 6, the Philip of the optical element 2 2; the Lille pattern 2 2 3 The system has at least a focal length, the implementation of the money, the Philippine focus, for example, and the angle of the front plurality of triangular convex portions and the large H causes the light emitted by the source 23 to diverge to both sides, and the object to be illuminated may have The aura-like beam circulates the illuminated object. In addition, in this embodiment, the optical element 22 is located on the transparent substrate between 1260381 and the light source 23. Referring to Figure 7, the first surface 221 of the optical element 22 can have a plurality of Fresnel regions 223. In this embodiment, there are two Fresnel texture area 223, and its texture is a linear Fresnel pattern. Of course, Fresnel texture can be set according to the actual needs of the product, for example, one is a linear Fresnel pattern, and the other is concentric. In addition, the transparent substrate 24 is attached to the first surface 221 of the optical element 22. In this embodiment, the light source 23 is exemplified by two linear fluorescent lamps, which are parallel to the linear Fresnel. After the angle and the size of the appropriate triangular convex portion 2231 are adjusted, the light rays of the adjacent two light sources 23 can be respectively penetrated into the Fresnel texture region 223 and deflected in different directions. For example, as shown in FIG. 8, the first surface 221 of the optical element 22' may have a plurality of Fresnel texture regions 223'. In this embodiment, four Fresnel texture regions 223' are taken as an example, and the texture lines thereof are respectively Concentric (Concent Ric) Fresnel texture. In addition, the light source 23' is exemplified by a plurality of point light sources, such as an array of light emitting diodes, and the number of light sources 23' is substantially equivalent to the number of Fresnel regions 223'. And the light source 23' is disposed adjacent to the Fresnel zone 223'. When the light source passes through the Fresnel zone 223' on the optical element 22', a directional beam is formed. In the directional illumination device of the present invention, the optical component 1608038 has at least one Fresnel zone. Compared with the prior art, the Fresnel zone on the optical component can refract light emitted by the light source to form Parallel beams are incident on the intended direction. Since the light beam is a parallel beam, when the light source of the same power is used, the light beam passing through the optical element is higher than the brightness of the conventional illumination device at a predetermined distance, so that the power of the light source in the illumination device can be reduced, thereby saving the cost. s expenses. Moreover, the light can be directed in a certain direction for local illumination without increasing the brightness or even causing interference in other places, and is suitable for use in a briefing room, or in a dark room for rinsing photos, and the like. Furthermore, the Fresnel zone of the directional illumination device can also utilize the Fresnel texture of different focal lengths to focus the diverging part of the light emitted by the light source, and at a suitable distance, the beam can be surrounded by the beam. The illuminated object becomes a characteristic decorative lighting. The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the present invention are intended to be included in the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a conventional daylight lamp; FIG. 2 is a schematic view showing that the larger the distance is, the larger the irradiation area is due to the divergence of the beam of the conventional daylight lamp; FIG. 3 is the directivity of the present invention. A schematic diagram of a lighting device in which the light source is a linear light source, and the Fresnel grain system is a single linear Fresnel pattern; FIG. 4 is a section 11 of the directional illumination device of FIG. 3 along the line A-A'! 26〇38l schematic diagram;
線型菲涅爾紋路； 明裝置之另一剖面示意 菲淫爾紋路區係為單一直 圖6係為本發明之指向性照明裝置之再一剖面示意 固其中光源係為一線性光源，菲涅爾紋路區係為單一直 線型菲涅爾紋路； 圖7係為本發明之指向性照明裝置之再一剖面示音 圖，其中光源係為複數線性光源，菲涅爾紋路區係為複數 直線型菲涅爾紋路；以及 圖8係為本發明之指向性照明裝置之再一剖面示咅 圖，其中光源係為複數點狀光源，菲涅爾紋路區係為=數 同心圓型菲涅爾紋路。 元件符號說明： 1 日光燈具 H 座體 12 日光燈管 13 反光罩 131 反光片 2 指向性照明裝置 21 殼體 211 開口 容置空間 12 212 1260381 22 光學元件 IT 光學元件 221 第一表面 222 第二表面 223 菲涅爾紋路區 223, 菲淫爾紋路區 2231 三角凸部 23 光源 23， 光源 24 透明基板 Αι 面積 A2 面積 di 距離 d2 距離 13Linear Fresnel texture; another section of the Ming device indicates that the Philippine striated road system is a single image. Figure 6 is another schematic view of the directional illumination device of the present invention. The light source is a linear light source, Fresnel. The texture is a single linear Fresnel pattern; FIG. 7 is a cross-sectional view of the directivity illumination device of the present invention, wherein the light source is a complex linear light source, and the Fresnel texture is a complex linear phenanthrene Further, FIG. 8 is a cross-sectional view showing a directional illumination device of the present invention, wherein the light source is a plurality of point light sources, and the Fresnel road region is a number concentric circular Fresnel pattern. Description of component symbols: 1 Daylight fixture H Seat 12 Fluorescent lamp 13 Reflector 131 Reflector 2 Directional lighting device 21 Housing 211 Opening accommodation space 12 212 1260381 22 Optical element IT Optical element 221 First surface 222 Second surface 223 Fresnel grain area 223, Philippine lunar area 2231 triangular convex part 23 light source 23, light source 24 transparent substrate Αι area A2 area di distance d2 distance 13