TW201600804A - Lighting device - Google Patents
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- TW201600804A TW201600804A TW104131605A TW104131605A TW201600804A TW 201600804 A TW201600804 A TW 201600804A TW 104131605 A TW104131605 A TW 104131605A TW 104131605 A TW104131605 A TW 104131605A TW 201600804 A TW201600804 A TW 201600804A
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Abstract
Description
本發明是有關於一種照明設備,特別是一種導光板不需設置微結構的照明設備。 The invention relates to a lighting device, in particular to a lighting device in which the light guiding plate does not need to be provided with a microstructure.
於一般的展場中,若是需要對於長形或大型的展示區域進行照明,通常會同時使用長形的日光燈,或使用多盞圓燈,以使光線充足,然而使用日光燈容易有光線過於分散而亮度不足的問題,而使用多盞圓燈又容易有部分區域照明範圍重疊而部分區域亮度不足的問題,且多盞燈具的設置亦會造成成本增加。 In general exhibitions, if you need to illuminate a long or large display area, you will usually use long fluorescent lamps at the same time, or use multiple round lamps to make the light sufficient. However, it is easy to use light to disperse the light. The problem of insufficient brightness, and the use of multiple round lamps, it is easy to have overlapping areas of illumination in some areas and insufficient brightness in some areas, and the installation of multiple lamps will also increase the cost.
一般而言,為了讓光源所散發的光線更均勻,會配合導光板使用,而導光板的相關專利數量眾多,如:US6328453、US6752507號專利案是於導光板上形成微結構,以控制光線的出光角度,或使出光的光線更為均勻。然而,於導光板上進行各種微結構加工及排列變化的設計,必然會增加導光板的製作程序,無法降低製作成本。 In general, in order to make the light emitted by the light source more uniform, it will be used with the light guide plate, and the number of patents related to the light guide plate is numerous. For example, US Pat. No. 6,382,453 and US Pat. No. 6,752,507 are forming a microstructure on the light guide plate to control the light. Light out the angle, or make the light out of the light more uniform. However, the design of various microstructure processing and arrangement changes on the light guide plate will inevitably increase the manufacturing procedure of the light guide plate, and the production cost cannot be reduced.
因此,本發明之目的,即在提供一種不需透過微結構即能控制光場的照明設備。 Accordingly, it is an object of the present invention to provide an illumination device that can control a light field without the need to transmit microstructures.
於是本發明照明設備,包含一光源、一用以接收該光源之光線的導光板,及一設置於該導光板上的反射元件。其中該光源包括多個間隔設置的發光二極體,沿著一軸線排列。 Therefore, the illumination device of the present invention comprises a light source, a light guide plate for receiving light of the light source, and a reflective element disposed on the light guide plate. Wherein the light source comprises a plurality of spaced-apart light-emitting diodes arranged along an axis.
該導光板包括一沿著該軸線延伸的入光面、一由該入光面的一側延伸的出光面、一由該入光面的另一側往遠離該出光面的方向傾斜延伸的連接面,及一連接該連接面及出光面的反射面。該入光面為一平坦表面。 The light guide plate includes a light incident surface extending along the axis, a light exit surface extending from one side of the light incident surface, and a connection extending obliquely from the other side of the light incident surface away from the light exit surface. a surface, and a reflecting surface connecting the connecting surface and the light emitting surface. The light incident surface is a flat surface.
其中,該導光板在該反射面的厚度是大於在該入光面的厚度,而且該反射元件是設置於該反射面上。 The thickness of the light guide plate on the reflective surface is greater than the thickness of the light incident surface, and the reflective element is disposed on the reflective surface.
本發明之功效在於:透過該導光板的參數設計,讓該光源所散發的光線通過該導光板後即可將線光源轉變成光線較為均勻的面光源,不需再於該導光板上形成微形結構,而能降低製作程序及成本。 The effect of the invention is that: through the parameter design of the light guide plate, the light emitted by the light source can pass through the light guide plate to convert the line light source into a light source with relatively uniform light, and no need to form a micro light on the light guide plate. Shape structure, which can reduce the production process and cost.
2‧‧‧照明設備 2‧‧‧Lighting equipment
21‧‧‧光源 21‧‧‧Light source
211‧‧‧發光二極體 211‧‧‧Lighting diode
22‧‧‧導光板 22‧‧‧Light guide plate
221‧‧‧入光面 221‧‧‧Into the glossy surface
222‧‧‧出光面 222‧‧‧Glossy
223‧‧‧連接面 223‧‧‧ Connection surface
224‧‧‧反射面 224‧‧‧reflecting surface
225‧‧‧第一連接邊 225‧‧‧ first connecting edge
226‧‧‧第二連接邊 226‧‧‧second connecting edge
227‧‧‧第三連接邊 227‧‧‧ third connecting edge
228‧‧‧投影線 228‧‧‧Projection line
229‧‧‧平直段 229‧‧‧ Straight section
220‧‧‧傾斜段 220‧‧‧sloping section
23‧‧‧反射元件 23‧‧‧Reflective components
θ‧‧‧第一夾角 Θ‧‧‧first angle
φ‧‧‧第二夾角 Φ‧‧‧second angle
d‧‧‧距離 D‧‧‧distance
L‧‧‧距離 L‧‧‧ distance
本發明之其他的特徵及功效,將於參照圖式的實施方式中清楚地呈現,其中:圖1是一立體圖,說明本發明照明設備之一實施例,包含一光源、一導光板,及一反射元件;圖2是一側視圖,說明該實施例中,該導光板的態樣,為了便於說明於圖中省略該光源未繪出;及圖3是一側視圖,說明該實施例中,該導光板的另一種態樣。 Other features and effects of the present invention will be apparent from the embodiments of the present invention, wherein: FIG. 1 is a perspective view illustrating an embodiment of a lighting apparatus of the present invention, including a light source, a light guide, and a FIG. 2 is a side view showing the state of the light guide plate in the embodiment, which is omitted in the drawing for convenience of explanation; and FIG. 3 is a side view showing the embodiment, Another aspect of the light guide plate.
參閱圖1、2,本發明照明設備2之一實施例,包含一光源21(只見於圖1)、一用以接收該光源21之光線的導光板22,及一設置於該導光板22上的反射元件23。於本實施例中,該光源21包括多個間隔設置的發光二極體211,且沿著一軸線排列,但不以此為限。 1 and 2, an embodiment of the illuminating device 2 of the present invention comprises a light source 21 (only seen in FIG. 1), a light guide plate 22 for receiving the light of the light source 21, and a light guide plate 22 disposed on the light guide plate 22. Reflecting element 23. In this embodiment, the light source 21 includes a plurality of spaced-apart LEDs 211 and is arranged along an axis, but is not limited thereto.
該導光板22包含一入光面221、一連接於該入光面221之一側的出光面222、一由該入光面221的另一側往遠離該出光面222的方向傾斜延伸的連接面223、一連接該連接面223及出光面222的反射面224、一位於該入光面221與出光面222之交界的第一連接邊225、一位於該入光面221與連接面223之交界的第二連接邊226,及一位於該連接面223與反射面224之交界的第三連接邊227。該連接面223在垂直該入光面221的一投影面上的投影長度,是小於該出光面222在該投影面上的投影長度。以圖2而言,該投影面是與該出光面222重疊,且該連接面223在該實施例中,較佳為未經噴砂處理的鏡面。該反射面224是維持固定斜率地傾斜設置。該反射元件23是設置並覆蓋於該反射面224上且該反射元件23未覆蓋該導光板22的其他面,因此,對於該出光面222而言,該出光面222是直接顯露而未被覆蓋,該反射面224與該出光面222之間形成一第二夾角φ,而該第三連接邊227投影於該出光面222上形成一投影線228。該光源21產生的光線經由該入光面221進入後,再經由該反射元件23反射而由該出光面222出光。如圖2所示,該出光面222與該連接面223延伸 形成一第一夾角θ。其中,該出光面222與該反射面224之交界至該第一連接邊225的垂直距離,大於該第二連接邊226與該第三連接邊227之間的垂直距離,該導光板22的厚度是由該入光面221往該反射面224的方向漸增。 The light guide plate 22 includes a light incident surface 221, a light exit surface 222 connected to one side of the light incident surface 221, and a connection extending obliquely from the other side of the light incident surface 221 away from the light exit surface 222. a surface 223, a reflective surface 224 connecting the connecting surface 223 and the light-emitting surface 222, a first connecting side 225 located at the boundary between the light-incident surface 221 and the light-emitting surface 222, and a light-emitting surface 221 and a connecting surface 223 A second connecting edge 226 of the interface and a third connecting edge 227 at the interface between the connecting surface 223 and the reflecting surface 224. The projection length of the connecting surface 223 on a projection surface perpendicular to the light incident surface 221 is smaller than the projection length of the light exit surface 222 on the projection surface. 2, the projection surface overlaps the light exit surface 222, and the connection surface 223 is preferably a non-blasted mirror surface in this embodiment. The reflecting surface 224 is inclined to maintain a fixed slope. The reflective element 23 is disposed on the reflective surface 224 and the reflective element 23 does not cover the other surface of the light guide plate 22. Therefore, for the light exit surface 222, the light exit surface 222 is directly exposed without being covered. A second angle φ is formed between the reflective surface 224 and the light-emitting surface 222, and the third connecting edge 227 is projected on the light-emitting surface 222 to form a projection line 228. The light generated by the light source 21 enters through the light incident surface 221, and is reflected by the reflective element 23 to be emitted from the light exit surface 222. As shown in FIG. 2, the light-emitting surface 222 and the connecting surface 223 extend. A first angle θ is formed. The vertical distance between the light-emitting surface 222 and the reflective surface 224 to the first connecting side 225 is greater than the vertical distance between the second connecting side 226 and the third connecting side 227, and the thickness of the light guide plate 22 The light incident surface 221 is gradually increased in the direction of the reflecting surface 224.
定義θT為該導光板22的全反射角,d為該第一、二連接邊225、226之間的距離,L為該第一連接邊225與該投影線228之間的距離,而θ<φ,θ<θT,且L≧(d/2)/tanθ。其中,φ是用來控制出光角度(angle of beam)的參數,L與θ則是用來控制光場寬度(width of beam)的參數,而上述三個參數共同配合下即可用來控制該導光板22的出光量(Flux)。 The definition θ T is the total reflection angle of the light guide plate 22, d is the distance between the first and second connecting sides 225 and 226, and L is the distance between the first connecting side 225 and the projection line 228, and θ <φ, θ < θ T , and L ≧ (d / 2) / tan θ. Where φ is a parameter used to control the angle of beam, and L and θ are parameters used to control the width of beam, and the above three parameters can be used together to control the guide. The amount of light emitted by the light plate 22 (Flux).
本發明利用兩種不同的材質製作該導光板22,一種為聚碳酸酯(Polycarbonate,PC),另一種為聚甲基丙烯酸甲酯(Polymethylmethacrylate,PMMA),進行試驗後獲得如表一、二所載之試驗結果。 The light guide plate 22 is made of two different materials, one is polycarbonate (PC) and the other is polymethylmethacrylate (PMMA). After the test, it is obtained as shown in Tables 1 and 2. The test results are contained.
由於該導光板22的參數條件需符合θ<φ,θ<θT,且L≧(d/2)/tanθ之三個條件,而由表一中第(1)組之試驗結果來看,符合θ<φ(11°<30°),θ<θT(11°<42.16°),且L≧(d/2)/tanθ(79mm>2.2mm)之三個條件,因此其出光量可達90%以上。同理,第(2)組之試驗亦有相同結果,而第(3)組之試驗亦可使出光量接近60%。由第(4)~(7)組之試驗結果來看,只要不符合三個條件中的任一條件,其出光量明顯減少至接近50%,甚至是50%以下,而無法達到控制出光量的效果。 Since the parameter condition of the light guide plate 22 is to satisfy three conditions of θ<φ, θ<θ T , and L≧(d/2)/tan θ, and from the test results of the group (1) in Table 1, It meets three conditions of θ<φ(11°<30°), θ<θ T (11°<42.16°), and L≧(d/2)/tan θ(79mm>2.2mm), so the amount of light emitted can be More than 90%. Similarly, the test in group (2) has the same result, and the test in group (3) can also make the amount of light close to 60%. From the test results of the group (4) to (7), as long as it does not meet any of the three conditions, the amount of light emitted is significantly reduced to nearly 50%, or even less than 50%, and the amount of controlled light cannot be achieved. Effect.
同理,表二是以另一種材質所製成的導光板進行試驗,而能獲得與表一類似的結果。 Similarly, Table 2 is tested with a light guide plate made of another material, and similar results as Table 1 can be obtained.
另外要說明的是,如圖3所示,該導光板22的 連接面223也可以具有一連接該入光面221的平直段229,及一連接該平直段229與反射面224的傾斜段220,該平直段229與該出光面222是互相平行,該第一夾角θ則是由該出光面222與該連接面223的傾斜段220延伸形成。藉此,讓該導光板22呈現另一種形態,而同樣能得到相似於表一、二所載之試驗結果。 In addition, as shown in FIG. 3, the light guide plate 22 The connecting surface 223 may also have a straight section 229 connected to the light incident surface 221, and an inclined section 220 connecting the straight section 229 and the reflecting surface 224. The straight section 229 and the light emitting surface 222 are parallel to each other. The first angle θ is formed by extending the light exit surface 222 and the inclined section 220 of the connecting surface 223. Thereby, the light guide plate 22 is presented in another form, and test results similar to those shown in Tables 1 and 2 can be obtained in the same manner.
綜上所述,本發明照明裝置2透過該導光板22的參數設計,即可藉由改變參數條件來控制出光量及出光比例,並讓原本呈線狀分佈的該光源21所散發的光線通過該導光板22後,變成較為均勻且呈面狀的出光面積,而能提供大範圍的均勻光線,故確實能達成本發明之目的。 In summary, the illuminating device 2 of the present invention can control the light quantity and the light output ratio by changing the parameter conditions through the parameter design of the light guide plate 22, and pass the light emitted by the light source 21 which is originally distributed in a line shape. After the light guide plate 22, the light-emitting area is relatively uniform and planar, and a wide range of uniform light can be provided. Therefore, the object of the present invention can be achieved.
惟以上所述者,僅為本發明之實施例而已,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範圍及專利說明書內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內。 However, the above is only the embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent changes and modifications made by the patent application scope and the patent specification of the present invention are still It is within the scope of the patent of the present invention.
2‧‧‧照明設備 2‧‧‧Lighting equipment
21‧‧‧光源 21‧‧‧Light source
211‧‧‧發光二極體 211‧‧‧Lighting diode
22‧‧‧導光板 22‧‧‧Light guide plate
221‧‧‧入光面 221‧‧‧Into the glossy surface
222‧‧‧出光面 222‧‧‧Glossy
223‧‧‧連接面 223‧‧‧ Connection surface
224‧‧‧反射面 224‧‧‧reflecting surface
225‧‧‧第一連接邊 225‧‧‧ first connecting edge
226‧‧‧第二連接邊 226‧‧‧second connecting edge
227‧‧‧第三連接邊 227‧‧‧ third connecting edge
228‧‧‧投影線 228‧‧‧Projection line
23‧‧‧反射元件 23‧‧‧Reflective components
φ‧‧‧第二夾角 Φ‧‧‧second angle
Claims (10)
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TW104131605A TWI554725B (en) | 2013-05-27 | 2013-05-27 | Lighting device |
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TW104131605A TWI554725B (en) | 2013-05-27 | 2013-05-27 | Lighting device |
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TW201600804A true TW201600804A (en) | 2016-01-01 |
TWI554725B TWI554725B (en) | 2016-10-21 |
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TWI695143B (en) * | 2019-07-16 | 2020-06-01 | 友達光電股份有限公司 | Light emitting device and window light simulation system |
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US20080205078A1 (en) * | 2007-02-23 | 2008-08-28 | Luminus Devices, Inc. | Illumination tiles and related methods |
US8534901B2 (en) * | 2010-09-13 | 2013-09-17 | Teledyne Reynolds, Inc. | Collimating waveguide apparatus and method |
CN201867506U (en) * | 2010-10-15 | 2011-06-15 | 北京京东方光电科技有限公司 | Light guide plate and back light source |
CN102734655A (en) * | 2011-04-15 | 2012-10-17 | 东莞万士达液晶显示器有限公司 | Light source module |
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