200928176 九、發明說明： 【發明所屬之技術領域】 本發明涉及光學領域，尤其涉及一種白光 照明裝置及使用該裝置之檯燈。 【先前技術】 目前’發光二極體（Light Emitting Diode, led 目前，發光二極體（Light Emitting Di〇de，leD) ❹ ❹ 作為一種固態發光元件，因其具高亮度、長使用壽命、 廣色域（Wide Color Gamut)等特性而被廣泛應用於多 種領域之中。 1知之白光發光二極體通常係將藍光晶片封裝于 2雜有黃色螢光粉之封裝體内，使藍光晶片所發出之 監色可見光與黃色螢光粉受激勵後發出之黃光混合後 得到所需之白光。 惟，發光二極體在使用時，一般需要經過一導光 板，使發光二極體所發出之光經導光板之反射面反射 後射向導光板之出光面，由導光板之出光面均勾射 出，、將點光源轉換成面光源。此過程中，當利用上述 方式所產生之白光經過導光板時，由於導光板產生之 棱鏡效應，將使上述白光 ㈡7尤一極體所產生之白光因 f鏡效應而色散’影響光之演色性。 【發明内容】 有鑒於此，有必iw 光照明裝置及使料^ 種具有較好演色性之白 使用該白光照明裝置之檯燈。 200928176 —種檯燈，包括燈座、支架、燈罩以及白光照明 裝置’所述支架連接於所述燈座和燈罩之間，所述白 光照明袭置設於所述燈罩内’所述白光照明裝置包括 ‘光板以及設置在導光板一側之至少一固態發光元 件陣列’所述固態發光元件陣列包括可發出紅、綠、 藍三種可見光之三種固態發光元件。 一種白光照明裝置’包括一導光板以及設在導光 板一側之至少一固態發光元件陣列，所述導光板具有 一出光面以及與出光面相對之反射面，所述固態發光 元件陣列包括可發出紅、綠、藍三種可見光之三種固 態發光元件。 上述檯燈之白光照明裝置利用紅、綠、藍三種發 光一極體所產生之可見光混合而產生白光，當這三種 單色光通過導光板時’不會產生棱鏡效應，從而使得 獲得之白光具有較好之演色性。 【實施方式】 下面將結合附圖對本發明實施例作進一 步之詳細說明。 圖1及圖2所示為一種檯燈1〇〇，其包括：燈座 20、支架30、燈罩40以及白光照明裝置50。 所述燈座20位於檯燈1〇〇之底部，用於將檯燈 100放置於桌面上。所述支架30位於燈座20和燈罩 40之間，用於支撐並調節燈罩40之高度。所述白光 照明裝置50設於燈罩40内’提供合適亮度之燈光， 200928176 便於人們之工作和學習。 如圖3所示，所述白光照明裝置50包括：一導 光板52以及兩個線性之發光二極體陣列54。 所述導光板 52 由透明之壓克力材料 (polymethylmethacrylate, PMMA).或玻璃製成，其具有 一位於導光板52底部之出光面521以及位於導光板 52頂部且與出光面521相對之反射面522。所述出光 面521為平面，所述導光板52之反射面522呈V形， 使得所述導光板52之厚度自導光板52之左右兩側向 導光板52之中部逐漸減小，該反射面522可反射由 發光二極體陣列54進入導光板52之光線，使該等光 線沿不同之角度射向導光板52之出光面521，從而均 勻分佈於導光板52之出光面521上並由出光面521 射向導光板52之外部。該V形之反射面522可增加 導光板52内之全反射現象，提升出射光之輝度。可以 理解地，該反射面522上可以塗佈一層反光層或者在 反射面522上雕刻複數V形之溝槽，以達到更好之反 射效果從而獲得具有較高輝度之出射光。 請一併參閱圖4，所述導光板52之左右兩側各開 設一長條狀之凹槽524，所述凹槽524用於收容所述 發光二極體陣列54，其橫截面為矩形。所述凹槽524 之底部即所述導光板52之入射面上設有複數凸點 525，所述凸點525呈四棱錐狀，並緊密排列於所述凹 槽524之底部，以利於光之導入。 200928176 請一併參閱圖5,所述導光板52上還設有兩排開 -孔526，各開孔526之橫截面呈三角形，在開孔526 • 之周圍形成三個可反射光線之侧面527。所述兩排開 孔526均沿導光板52之縱向排列，且上述兩排開孔 526對稱地設於導光板52之縱向申線之兩侧。上述開 孔526石導光板52之厚度方向即垂直出光面521之方 向貫穿所述導光板52。所述開孔526之橫截面尺寸由 反射面522向出光面521逐漸減小，使開孔526周圍 之側面527相對於出光面521傾斜設置，使得所述側 面527可將更多之光線反射至出光面521，更有利於 提升出射光之輝度。 請繼續參閱圖3，所述發光二極體陣列54包括一 基板542及設於基板542上之複數組發光二極體544。 所述基板542之橫截面與所述凹槽524之橫截面 大致相同，且其橫截面之尺寸略大於所述凹槽524之 ❸ 橫截面尺寸，使所述發光二極體陣列54藉由基板542 與^光板52之凹槽524間之緊配合固定至所述導光板 52上。所述基板542上設有電氣連線（圖未示），，上 述發光二極體544藉由與所述電氣連線相連而與供電 電源（圖未示）電性連接。所述基板542由具良好導 熱性之材料，如鋁、銅等金屬材料或陶瓷材料製成， 用以散發發光二極體544工作時所產生之熱量。當基 板542由金屬材料製成時，通常在電氣連線之外^二 塗覆一層電絕緣材料’以防止由於基板542導電而造 200928176 成之短路。 ' 上述各組發光二極體544沿基板542之縱向均勻 . 排列，各。組發光二極體5 4 4均包括可分別發出紅、黃、 單色光之二個發光二極體，上述三個發光二極 ?在電激勵下所發出之紅、綠、藍三色可見光可相互 此σ而產生白光。上述開孔526之設置，增加了光之 反射面，使發光二極體陣列54所發出之單色光經過 ❺ ®成開孔526之側面527反射後，更為均勻地混合在 一起，提高了混光效果。 請繼續參閱圖2，所述燈罩4〇包括一上蓋42及 一下蓋44。 所述上蓋42與檯燈100之支架3〇相連，其包括 一頂板421以及由頂板421之周緣向下延伸^側板 422。所述頂板421上設有四個由頂板421向下垂直凸 伸之卡片423,各卡片423之中部設有一貫穿卡片423 Ο 下端之卡槽424，所述發光二極體陣列54之基板542 之前後兩端通過緊配合之方式收容於所述卡槽424 内，將所述白光照明裝置50固定於所述燈罩4〇内。 所述下蓋44由玻璃、樹脂等透明材料製成，所述 下蓋44之中部即對應白光照明裝置5〇之出光面521 之部位向下凹陷’使所述下蓋44之中部與白光照明裝 置50之出光面521間間隔一定之距離，從而為所述下 蓋44之中部提供一定之緩衝空間，防止白光照明裝置 50之出光面521因燈罩40之下蓋44所受到之衝擊而 200928176 損壞。 所述下蓋44之週邊形狀與上蓋42之側板422之 内表面之形狀大致相同，且所述下蓋44之週邊尺寸略 大於所述上盍42之側板422之内表面之尺寸，使燈罩 40之下蓋44藉由緊配合之方式安裝至燈罩4〇之上蓋 42上，保護燈罩40内部之白光照明裝置5〇，防止A 被外部之尖銳物體刮傷，進一步地，該下蓋44還具有 ❹ 防止外部灰塵進入燈罩40内部之功效。 —上述檯燈100之白光照明裝置50利用紅、綠、藍 三種單色光之發光二極體544所產生之可見光混合而 產生白光，當這三種單色光通過導光板52時，不會由 於導光板52之棱鏡效應而產生色散，從而使獲得之白 光八有車乂好之廣色性。另外，上述之白光照明裝置％ 由於利用相互分離之紅、綠、藍三種發光二極體⑷ 得到白S，使得當其中之某一發光二極體544由於損 〇 壞而需要更換時，不會對其他發光二極體544產生影 響’與習知之在一封裝體内封裝紅、綠、藍三種發光 一極體晶片所得到之白光發光二極體相比，本實施例 所述之白光照明裝置50不會出現因損壞單個發光二 極體544而必須丟棄整個白光照明裝置別之現象， 延長了所述白光照明裝置5G之壽命’降低了其使用成 本。 進一步地’由於上述白光照明裝置50之發光二極 體陣列54設於導光板52内，因此可減少發光二 11 200928176 陣列54所發出之光射 .町门導先板^時所造成之光損 失，進一步提向出射光之輝度。 本實^例中’採用發光二極體陣列54作為上述檯 = 可以理解地，亦可以採用有機發光二 極體陣列^態發光元件陣列作為檯燈雇之光源， 使上述固態發光元件發出 合而成白光。牛發出之紅、綠、藍三種單色光混BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the field of optics, and more particularly to a white light illumination device and a table lamp using the same. [Prior Art] At present, Light Emitting Diode (LED) is a solid-state light-emitting component because of its high brightness, long service life and wide range. Wide color Gamut and other characteristics are widely used in a variety of fields. 1 Known white light emitting diodes are usually packaged in a package containing 2 yellow fluorescent powder, so that the blue light wafer is emitted The visible light is mixed with the yellow light emitted by the yellow fluorescent powder to obtain the desired white light. However, when the light emitting diode is used, it generally needs to pass through a light guide plate to make the light emitted by the light emitting diode. After being reflected by the reflective surface of the light guide plate, the light exit surface of the light guide plate is emitted, and the light exit surface of the light guide plate is ejected, and the point light source is converted into a surface light source. In this process, when the white light generated by the above method passes through the light guide plate, Due to the prism effect produced by the light guide plate, the white light generated by the white light (2) and the first one of the polar body is dispersive due to the f mirror effect, which affects the color rendering of the light. In view of this, there is a need for an iW light illuminating device and a table lamp using the white illuminating device with good color rendering. 200928176 — A lamp comprising a lamp holder, a bracket, a lampshade and a white light illuminating device Between the lamp holder and the lamp cover, the white light illumination device is disposed in the lamp cover. The white light illumination device includes a 'light plate and at least one solid state light emitting element array disposed on one side of the light guide plate. The array of elements includes three solid-state light-emitting elements that emit red, green, and blue visible light. A white light illumination device includes a light guide plate and at least one solid-state light-emitting element array disposed on one side of the light guide plate, the light guide plate having a light-emitting surface And a reflective surface opposite to the light-emitting surface, the solid-state light-emitting element array includes three solid-state light-emitting elements capable of emitting three kinds of visible light of red, green and blue. The white light illumination device of the above-mentioned desk lamp is generated by using three kinds of light-emitting bodies of red, green and blue. The visible light is mixed to produce white light, and when the three monochromatic lights pass through the light guide plate, 'the prism effect is not generated. Therefore, the obtained white light has better color rendering. [Embodiment] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Fig. 1 and Fig. 2 show a table lamp 1〇〇, which includes: a lamp The holder 20, the bracket 30, the lamp cover 40 and the white light illuminating device 50. The lamp holder 20 is located at the bottom of the desk lamp 1 , for placing the desk lamp 100 on the table top. The bracket 30 is located between the lamp holder 20 and the lamp cover 40. For supporting and adjusting the height of the lampshade 40. The white light illumination device 50 is disposed in the lampshade 40 to provide a suitable brightness of light, and 200928176 is convenient for people to work and learn. As shown in FIG. 3, the white light illumination device 50 includes A light guide plate 52 and two linear light emitting diode arrays 54. The light guide plate 52 is made of transparent polymethylmethacrylate (PMMA) or glass, and has a light exit surface 521 at the bottom of the light guide plate 52 and a reflective surface on the top of the light guide plate 52 opposite to the light exit surface 521. 522. The light-emitting surface 521 is a flat surface, and the reflective surface 522 of the light guide plate 52 is V-shaped, such that the thickness of the light guide plate 52 gradually decreases from the left and right sides of the light guide plate 52 to the middle of the light guide plate 52. The reflective surface 522 The light entering the light guide plate 52 can be reflected by the light emitting diode array 54 so that the light rays are incident on the light exit surface 521 of the light guide plate 52 at different angles, so as to be evenly distributed on the light exit surface 521 of the light guide plate 52 and emitted by the light exit surface 521. The light guide plate 52 is external to the light guide plate 52. The V-shaped reflecting surface 522 can increase the total reflection phenomenon in the light guide plate 52 and enhance the brightness of the emitted light. It can be understood that the reflective surface 522 can be coated with a reflective layer or a plurality of V-shaped grooves can be engraved on the reflective surface 522 to achieve a better reflection effect to obtain an exiting light having a higher luminance. Referring to FIG. 4, a long groove 524 is formed on each of the left and right sides of the light guide plate 52. The groove 524 is for receiving the LED array 54 and has a rectangular cross section. The bottom surface of the groove 524, that is, the incident surface of the light guide plate 52, is provided with a plurality of bumps 525, and the bumps 525 have a quadrangular pyramid shape and are closely arranged at the bottom of the groove 524 to facilitate the light. Import. As shown in FIG. 5, the light guide plate 52 is further provided with two rows of opening-holes 526. Each of the openings 526 has a triangular cross section, and three reflective light-reflecting sides 527 are formed around the opening 526. . The two rows of openings 526 are arranged along the longitudinal direction of the light guide plate 52, and the two rows of openings 526 are symmetrically disposed on both sides of the longitudinal line of the light guide plate 52. The opening 526 of the stone guide plate 52 penetrates the light guide plate 52 in the direction of the thickness of the vertical light exit surface 521. The cross-sectional dimension of the opening 526 is gradually reduced from the reflecting surface 522 toward the light-emitting surface 521, so that the side surface 527 around the opening 526 is inclined with respect to the light-emitting surface 521, so that the side surface 527 can reflect more light to The light-emitting surface 521 is more advantageous for enhancing the brightness of the emitted light. Referring to FIG. 3, the LED array 54 includes a substrate 542 and a plurality of arrays of LEDs 544 disposed on the substrate 542. The cross-section of the substrate 542 is substantially the same as the cross-section of the recess 524, and the cross-sectional dimension thereof is slightly larger than the cross-sectional dimension of the recess 524, so that the LED array 54 is supported by the substrate. A tight fit between the recess 524 of the light plate 52 and the light guide plate 52 is fixed to the light guide plate 52. An electrical connection (not shown) is disposed on the substrate 542. The light-emitting diode 544 is electrically connected to a power supply (not shown) by being connected to the electrical connection. The substrate 542 is made of a material having good heat conductivity, such as a metal material such as aluminum or copper, or a ceramic material to dissipate the heat generated when the light-emitting diode 544 operates. When the substrate 542 is made of a metal material, a layer of electrically insulating material is usually applied outside the electrical wiring to prevent a short circuit caused by the conduction of the substrate 542. The above-mentioned respective groups of light-emitting diodes 544 are evenly arranged along the longitudinal direction of the substrate 542. The group of light-emitting diodes 54 4 includes two light-emitting diodes which respectively emit red, yellow and monochromatic light, and the above three light-emitting diodes emit red, green and blue visible light under electrical excitation. White light can be generated from each other. The arrangement of the openings 526 increases the reflecting surface of the light, so that the monochromatic light emitted by the LED array 54 is reflected by the side 527 of the opening 526, and is evenly mixed together, thereby improving the uniformity. Mixed light effect. Referring to FIG. 2, the lamp cover 4 includes an upper cover 42 and a lower cover 44. The upper cover 42 is connected to the bracket 3 of the desk lamp 100, and includes a top plate 421 and a side plate 422 extending downward from the periphery of the top plate 421. The top plate 421 is provided with four cards 423 extending vertically downward from the top plate 421. A card slot 424 is formed in the middle of each of the cards 423, and the substrate 542 of the LED array 54 is before and after. The two ends are received in the card slot 424 by tight fit, and the white light illumination device 50 is fixed in the lamp cover 4〇. The lower cover 44 is made of a transparent material such as glass or resin, and a portion of the lower cover 44, that is, a portion corresponding to the light-emitting surface 521 of the white light illumination device 5 is recessed downwardly to illuminate the middle portion of the lower cover 44 with white light. The light-emitting surface 521 of the device 50 is spaced apart by a certain distance to provide a certain buffer space for the middle portion of the lower cover 44 to prevent the light-emitting surface 521 of the white light illumination device 50 from being damaged by the impact of the lower cover 44 of the lamp cover 40. . The shape of the periphery of the lower cover 44 is substantially the same as the shape of the inner surface of the side plate 422 of the upper cover 42, and the peripheral dimension of the lower cover 44 is slightly larger than the inner surface of the side plate 422 of the upper cover 42 to make the lamp cover 40 The lower cover 44 is attached to the upper cover 42 of the lamp cover 4 by tight fit to protect the white light illumination device 5 inside the cover 40 from being scratched by a sharp external object. Further, the lower cover 44 has防止 Prevent external dust from entering the inside of the lamp cover 40. The white light illumination device 50 of the above-mentioned desk lamp 100 generates white light by mixing the visible light generated by the three-color light of the red, green and blue light-emitting diodes 544. When the three kinds of monochromatic light pass through the light guide plate 52, the guide light is not guided. The prism effect of the light plate 52 causes dispersion, so that the obtained white light has a wide color of the rut. In addition, the above-mentioned white light illuminating device % obtains white S by using three kinds of light-emitting diodes (4) of red, green and blue which are separated from each other, so that when one of the light-emitting diodes 544 needs to be replaced due to damage, it will not Influencing the other light-emitting diodes 544, the white light illumination device of the present embodiment is compared with the conventional white light-emitting diode obtained by encapsulating three kinds of light-emitting diode chips of red, green and blue in a package. 50, there is no other phenomenon that the entire white light illuminating device must be discarded due to damage to the single light-emitting diode 544, and the life of the white light illuminating device 5G is prolonged', which reduces the cost of use. Further, since the light-emitting diode array 54 of the white light illumination device 50 is disposed in the light guide plate 52, the light loss caused by the light emitted from the array of the light-emitting diodes 11 200928176 can be reduced. , further to the brightness of the outgoing light. In the present embodiment, the light-emitting diode array 54 is used as the above-mentioned stage. It is understood that the organic light-emitting diode array light-emitting element array can also be used as a light source for the desk lamp to make the solid-state light-emitting elements emit together. White light. Three kinds of monochromatic light mixed by red, green and blue
❹ 本實知例中，白光照明裝置5〇之導光板52兩側 均設有發光二極料列54，可㈣解地，所述白光照 月裝置50可以僅在導光板52之一側設置發光 陣列54。 本實施例中，導光板52上開設有橫截面為三角形 之開孔526,所述開孔526為貫穿所述導光板&之穿 孔’可以理解地，所述開孔526亦可為未貫穿導光板 52之盲孔，所述開孔526之橫截面形狀亦不限於三角 形’其可以根據需要作適當調整。 本實施例中，以檯燈為例說明該白光照明裝置， 實際上，所述白光照明裝置可用於其他領域，如用作 液晶顯示器（LCD)之背光源，用作地板燈，用作玩具 燈等’或用於手電燈、指示器内。 綜上所述’本發明符合發明專利要件，麦 依法提出專利申請。惟，以上該者僅為本發明 之較佳實施例，舉凡熟悉本案技藝之人士，在 爰依本發明精神所作之等效修飾或變化，皆應 12 200928176 涵蓋於以下之申請專利範圍内。 【圖式簡單說明】 圖1係本發明檯燈之一較佳實施例之立體 示意圖。 圖2係圖1中檯燈之分解示意圖。 - 圖3係圖2中白光照明裝置之分解示意 圖。 圖4係圖3之部分放大圖。 © 圖5係圖4中導光板沿V-V線之剖視圖。 【主要元件符號說明】 檯 燈 100 燈 座 20 支 架 30 燈 罩 40 上 蓋 42 頂 板 421 側 板 422 卡 片 423 卡 槽 424 下 蓋 44 白 光 昭 明裝 置 50 導 光 板 5 2 _ 出 光 面 521 反 射 面 522 凹 槽 524 凸 點 525 開孔 526 侧 面 527 發 光 二 極體 陣列 54 基 板 542 發光二極體 544 13In the present embodiment, the light guide plate 52 of the white light illumination device 5 is provided with a light-emitting diode array 54 on both sides thereof, which can be used to solve the ground. The white light-moon device 50 can be disposed only on one side of the light guide plate 52. Light array 54. In this embodiment, the light guide plate 52 is provided with an opening 526 having a triangular cross section, and the opening 526 is a through hole permeable to the light guide plate. The opening 526 may also be non-penetrating. The blind hole of the light guide plate 52, the cross-sectional shape of the opening 526 is also not limited to a triangle 'which can be appropriately adjusted as needed. In this embodiment, the white light illumination device is illustrated by taking a desk lamp as an example. In fact, the white light illumination device can be used in other fields, such as a backlight of a liquid crystal display (LCD), used as a floor lamp, as a toy lamp, etc. 'Or used in a flashlight, indicator. In summary, the invention conforms to the patent requirements of the invention, and the patent application is filed by Mai. However, the above is only a preferred embodiment of the present invention, and those skilled in the art will be able to make equivalent modifications or variations in accordance with the spirit of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view showing a preferred embodiment of a table lamp of the present invention. Figure 2 is an exploded perspective view of the table lamp of Figure 1. - Figure 3 is an exploded schematic view of the white light illumination device of Figure 2. Figure 4 is a partial enlarged view of Figure 3. © Fig. 5 is a cross-sectional view of the light guide plate taken along line V-V in Fig. 4. [Main component symbol description] Table lamp 100 Lamp holder 20 Bracket 30 Lamp cover 40 Upper cover 42 Top plate 421 Side plate 422 Card 423 Card slot 424 Lower cover 44 White light illumination device 50 Light guide plate 5 2 _ Light-emitting surface 521 Reflecting surface 522 Groove 524 Bump 525 Opening 526 side 527 light emitting diode array 54 substrate 542 light emitting diode 544 13