201035479 ，六、發明說明： 【發明所屬之技術領域】 本發明涉及一種發光二極體燈具，特別係指一 種可輸出不同色溫之發光二極體燈具。 【先前技術】 处^為一種新型之光源，發光二極體憑藉其節 忐、％保、高效等特點，已被應用到越來越多之領 域當中，大有取代傳統光源之趨勢。 Ό 發光二極體晶片是發光二極體内最為重要之元 件，其決定了發光二極體之發光亮度及出光顏色。 在通用照明領域，為了獲取照明所必需之白光，目 1最為普遍之方法係將-藍光晶片#黃色螢光粉組 合使用，藉由混光效應而產生白光，即，晶片受電 々U·所驅動而發出藍光之|，一冑分藍光激發榮光粉 使之發出黃光，這部分黃光與剩餘之藍光混合而形 Ο 成所需之白光。 _眾所周知，不同色溫之光線之穿透能力各有不 同三其中高色溫（>8000k)之藍光波長最短，其穿透能 力最弱，而低色溫（<35〇〇κ)之橙光波長最長，其穿 透月b力最強。因此，對於戶外燈而言，在較為晴朗 之天氣，一般會需要偏藍之白光，以獲取較好之照 月放果，而當天氣非常潮濕（如下雨或起霧）時， 則一般會需要偏黃之白光，以使光線能夠穿透水滴 3 201035479 :霧：而：播較遠之距離，從而增強光線之可見 ^ 上述發光二極體僅能發出同一色溫之 in 1 *裝該等發光二極體之燈具之照明效果 非…化，無法同時適應多種不同天氣之需求。 【發明内容】 恭七有，於此’實有必要提供—種可輸出不同色溫之 發光二極體燈具。201035479, VI. Description of the Invention: [Technical Field] The present invention relates to a light-emitting diode lamp, and more particularly to a light-emitting diode lamp which can output different color temperatures. [Prior Art] As a new type of light source, the light-emitting diode has been applied to more and more fields with its characteristics of saving, %, and high efficiency, which has a tendency to replace the traditional light source.发光 The light-emitting diode chip is the most important component in the light-emitting diode, which determines the light-emitting brightness and light-emitting color of the light-emitting diode. In the field of general illumination, in order to obtain the white light necessary for illumination, the most common method is to use a combination of blue-light wafer #yellow phosphor and white light by the light mixing effect, that is, the wafer is driven by the electric 々U· The blue light is emitted, and a light blue light excites the glory powder to emit yellow light, which is mixed with the remaining blue light to form the desired white light. _ It is well known that the light penetration ability of light of different color temperatures is different. Among them, the high color temperature (> 8000k) has the shortest blue light wavelength, the weakest penetration ability, and the low color temperature (<35〇〇κ) orange wavelength. The longest, its penetration of the month b is the strongest. Therefore, for outdoor lights, in the more sunny weather, it is generally necessary to use a bluish white light to obtain better photos of the moon, and when the weather is very humid (such as rain or fog), it is generally required. Yellowish white light to allow light to penetrate water droplets 3 201035479 : Fog: And: broadcast farther distances, thus enhancing the visible light ^ The above-mentioned light-emitting diodes can only emit the same color temperature in 1 * Install these light-emitting two The lighting effect of the polar body lighting is not suitable, and it cannot adapt to the needs of many different weathers at the same time. [Summary of the Invention] Christine has seven, and it is necessary to provide a light-emitting diode lamp that can output different color temperatures.
Ο -種發光二極體燈具，其包括複數第一發光二 極及第—發光二極體，該等第—發光二極體所發 ^線之色溫不同於第二發光二極體所發出光線之 與習知技術相比，由於本發明採料有不同色溫 之第-發光二極體及第二發光二極體配合使用，從 而使燈具可在多種色溫模式間切換，提供多樣化之 照明效果，以適應各種天氣狀況之需求。 【實施方式】 請參閱圖1及圖2,示出了本發明第一實施例之 發光二極體燈具35G之光源，其由—發光二極體陣 列所構成。該發光二極體陣列由兩類不同之多個第 一及第二發光二極體模組220、240交替排列而成， 其中第一發光二極體模組22〇包括複數可發出低色 溫（<3500K)之暖白光之第一發光二極體222，第 二發光二極體模組24〇包括複數可發出高色溫 4 201035479 ‘ （>8000Κ)之冷白光之第二發光二極體242。該等 帛一發光二極體模組220均彼此串接1後與已串 接好之第二發光二極體模組並聯至相應之驅動 電路34G中，由此，第—發光二極體模組—與第 二發光二極體模組240可被選擇性之點亮，即每次 僅使第一發光二極體模組22〇及第二發光二極體模 組240中之一類被點亮，以驅動燈具35〇產生不同 色溫之照明效果。 〇 在各種戶外應用中，如道路或廣場，為使燈具 350能實現自動調光之功能，還可將一感測器32〇電 性·連接至燈具350。如圖2所示，其為燈具電路之方 框圖。該燈具電路包括一電源31〇及依次連接至電 源310之一感測器320、一控制電路330、一驅動電 路340及一發光二極體燈具350^該感測器32〇用於 測定外界環境之參數，以發出相應之信號至控制電 ❹路330内，從而使燈具350在不同之色溫模式間切 換。優選地，為使燈具350之燈光能給行人帶來較 為舒適之感受，該感測器320可為一溫度感測器。 當外界環境之溫度較高時（如>20°C )，感測器320 將輸入信號I至控制電路330中，控制電路330根據 該信號選擇接通第二發光二極體模組240,然後藉由 驅動電路340將電流輸入進第二發光二極體模組240 中，使整個燈具350產生高色溫之冷光，從而使經 過燈具350之行人感覺較為涼爽。當外界環境溫度 5 201035479The invention relates to a light-emitting diode lamp, which comprises a plurality of first light-emitting diodes and a first light-emitting diode, wherein the color temperature of the light-emitting diodes is different from the light emitted by the second light-emitting diodes Compared with the prior art, the first light-emitting diode and the second light-emitting diode with different color temperatures are used together, so that the lamp can be switched between multiple color temperature modes, providing various illumination effects. To adapt to the needs of various weather conditions. [Embodiment] Referring to Fig. 1 and Fig. 2, a light source of a light-emitting diode lamp 35G according to a first embodiment of the present invention is shown, which is composed of an array of light-emitting diodes. The LED array is alternately arranged by two different types of first and second LED modules 220 and 240. The first LED module 22 includes a plurality of low color temperatures ( <3500K) warm white light first light emitting diode 222, second light emitting diode module 24〇 includes a plurality of cold light white second light emitting diodes capable of emitting high color temperature 4 201035479 ' (>8000Κ) 242. The first LED modules 220 are connected in series with each other and then connected to the corresponding second LED module in parallel to the corresponding driving circuit 34G, thereby, the first LED module The group-and second light-emitting diode module 240 can be selectively illuminated, that is, only one of the first light-emitting diode module 22 and the second light-emitting diode module 240 is clicked at a time. Bright, to drive the lamps 35 〇 to produce different color temperature lighting effects. 〇 In various outdoor applications, such as roads or plazas, a sensor 32 can be electrically connected to the luminaire 350 in order to enable the luminaire 350 to perform automatic dimming. As shown in Figure 2, it is a block diagram of the luminaire circuit. The lamp circuit includes a power source 31〇 and a sensor 320 connected to the power source 310, a control circuit 330, a driving circuit 340 and a light emitting diode lamp 350. The sensor 32 is used for measuring the external environment. The parameters are sent to the control circuit 330 to cause the luminaire 350 to switch between different color temperature modes. Preferably, the sensor 320 can be a temperature sensor in order to provide a more comfortable feel to the light of the luminaire 350. When the temperature of the external environment is high (for example, > 20 ° C), the sensor 320 inputs the signal I to the control circuit 330, and the control circuit 330 selects to turn on the second LED module 240 according to the signal. Then, the current is input into the second LED module 240 by the driving circuit 340, so that the entire lamp 350 generates a cold light of a high color temperature, so that the pedestrian passing through the lamp 350 feels cool. When the ambient temperature is 5 201035479
較低時（如<20 C )，感測器320將信號η輸入進控 制電路330中，從而僅驅動第一發光二極體模組 220，使燈具350以低色溫之暖光進行照明，由此， 經過燈具3 5 0之彳于人在暖色之心理作用下將威覺到 比較溫暖。當然，基於其他需求，上述感測器320 還可以選擇為其他類型之感測器，如能夠滿足交通 需求之濕度感測器。該種濕度感測器320在债測到 外部兄之濕度大於某一 Sa界值（如下雨或起霧） 時，將發送信號III至控制電路330而點亮第一發光 二極體模組220，使燈具發出長波長之暖色光，以確 保光線可傳播至較遠之距離。而當外部環境之濕度 低於該臨界值時，濕度感測器320將發出信號IV至 控制電路330 ’此時僅有第二發光二極體模組240被 接通，從而使燈具350發出短波長之冷色光。 當然，上述兩種感測器320可一併使用，但此 時控制電路330必須設定成能夠判斷二感測器320 之信號優先順序而僅接受其中一種信號，以避免不 同信號間之相互干擾。為在交通及人體舒適度需求 間獲取一平衡，上述二感測器320之信號優先順序 可設置如下：At a lower time (e.g. < 20 C ), the sensor 320 inputs the signal η into the control circuit 330 to drive only the first LED module 220 to illuminate the lamp 350 with warm light of a low color temperature. Therefore, after the light fixtures of the lamps and lanterns, the people will feel warmer under the psychological effect of warm colors. Of course, based on other requirements, the sensor 320 can also be selected as other types of sensors, such as humidity sensors that can meet the traffic demand. The humidity sensor 320 will send a signal III to the control circuit 330 to illuminate the first LED module 220 when the debt is measured to be greater than a certain Sa threshold (such as rain or fog). The luminaire emits a long-wavelength warm light to ensure that the light can travel farther. When the humidity of the external environment is lower than the threshold, the humidity sensor 320 will send a signal IV to the control circuit 330. At this time, only the second LED module 240 is turned on, so that the lamp 350 is issued short. Cool light of wavelength. Of course, the above two types of sensors 320 can be used together, but at this time, the control circuit 330 must be set to determine the signal priority order of the two sensors 320 and accept only one of the signals to avoid mutual interference between the different signals. In order to obtain a balance between traffic and human comfort requirements, the signal priority order of the above two sensors 320 can be set as follows:
溫度感測器信號 濕度感測器信號 高優先順序 I III III I IV IV 6 201035479Temperature sensor signal Humidity sensor signal High priority I III III I IV IV 6 201035479
II III II II IV II 上述判斷過程可藉由控制電路330中之比較器 (圖未示）進行，其選通具有高優先順序之信號而 將低優先順序之信號過濾掉，從而驅動燈具350以 所需之色溫照明。 在某些場合中，如住宅、商店等，人們更願意 ^ 藉由手動控制來達到靈活調節燈具350色溫之目 〇 之，此時，燈具350之感測器320就被手動開關所 代替。如圖3所示，其為本發明.第二實施例之燈具 (圖未標）。該燈具包括一基板270、一樞設於基板 270中部之旋鈕260、一固定至旋鈕260上之支架 250、安裝至支架250上之複數第一發光二極體模組 220及第二發光二極體模組240及一與支架250隔離 設置之反光罩280。該支架250包括二彼此垂直之臂 Q 部252，該二臂部252之連接處固定至旋鈕260上， 從而使支架250可隨著旋鈕260之轉動改變朝向， 進而改變燈具之出光角度。支架250之左臂部252 上固定有多塊第一發光二極體模組220，右臂部252 上固定有多塊第二發光二極體模組240，由此，支架 250之左右兩侧可發出具有不同色溫之光線。為使燈 具能夠在兩種色溫模式間手動切換，一按鍵272被 安裝於基板270底部。該按鍵272藉由導線（圖未 7 201035479 示）與第一及第二發光二極體模組220、240連通， 當按鍵272撥動至左側時，僅有第一發光二極體模 組220被接通，從而使燈具發出暖光；當按鍵272 撥動至右側時，僅有第二發光二極體模組240被接 通，從而使燈具發出冷光。該反光罩280用於將第 一及第二發光二極體模組220、240發出之光線彙聚 起來，從而提升輸出光強。 為方便用戶調節色溫，上述按鍵272可被整合 進旋鈕260中，從而實現半自動之調光功能。如圖4 所示，該燈具之構造與圖3中之構造基本相同，僅 有按鍵272被省略掉。該燈具之支架250右臂部252 與基板270之中垂線間形成一個定位角（即右臂部 252與基板270右側間夾角之餘角），其決定了燈具 色溫之切換時間，即，只有當該定位角隨著旋鈕260 之轉動變化至一某一臨界值時，燈具之色溫才會被 切換。優選地，該臨界值可被設定為45度，以使第 一及第二發光二極體模組220、240之光線對稱輸出 至燈具外部。當旋轉旋鈕260，使該定位角在0〜45 度間變化時，僅有第一發光二極體模組220被接通， 從而使燈具發出暖光；當繼續旋轉旋鈕260而使該 定位角超過45度時，第一發光二極體模組220被熄 滅，而同時第二發光二極體模組240被接通，從而 使燈具發出冷光。 為使第一及第二發光二極體模組220、240之光 8 201035479 ' 線能被更進一步地彙聚，圖4中之燈具之反光罩28〇 可變化成如圖5所示之構造’改由兩個次級發光罩 282連接而成。每一次級發光罩282正對於基板27〇 之相應一側’其光軸大致與旋轉至水平位置處之相 應發光二極體模組220、240之中心軸共線。基於該 種特殊構造之反光罩280之設計，該燈具被設定為 僅在定位角為0度及90度時才接通對應之發光二極 體模妞220、240 (即在〇度時點亮第一發光二極體 〇 模組220，在90度時點亮第二發光二極體模組 240)，以使光線能夠以最佳之角度射入次級反光罩 282 中。 為更加靈活地調節輸出光之色溫，原本集成至單 個發光二極體222、242内之螢光粉可單獨分離出 來。如圖6所示，該等螢光粉284被以相同之厚度 但不同之濃度分別塗抹於二次級反射罩282之内壁 ❿ 面上，此時第一及第二發光二極體模組22〇、24〇之 發光二極體222、242内僅剩下藍光晶片（圖未示）， 因此此時第一發光二極體模組22〇及第二發光二極 體模、、且240只質相同，二者均發出相同之藍色光線。 該等藍光入射至反光罩28〇之螢光粉284上之後， 將被螢光粉284所吸收而激發其產生黃光。由於二 次級反光罩282上之螢光粉284之量不同，藍光被 ，收之程度各有所不同，從而導致合成之白光之色 溫有所差異。經由此種設計，可根據實際需求在二 9 201035479 人級反光罩282内塗抹不同量之螢光粉284，從而靈 活調節輸出光之色溫。 綜上所述，本發明確已符合發明專利之要件，遂 依法提出專射請。惟，以上所述者僅為本發明之 較佳實施方式，自不能以此限制本案之申請專利範 圍。舉凡熟悉本案技藝之人士援依本發明之精神所 作之等效修飾或變化，皆應涵蓋於以下申請專利範 圍内。 【圖式簡單說明】 圖1係本發明第一實施例之發光二極體燈具之 發光二極體模組陣列之示意圖。 圖2係圖1之發光二極體燈具之電路方框圖。 圖3係本發明第二實施例之發光二極體燈具之 截面圖。 圖4係本發明第三實施例之發光二極體燈具之 戴面圖。 圖5係本發明第四實施例之發光二極體燈具之 截面圖。 圖6係本發明第五實施例之發光二極體燈具之 截面圖。 【主要元件符號說明】 第一發光二極體模組220 第一發光二極體 222 第二發光二極體模組240 第二發光二極體242 201035479 支架 250 臂部 252 旋鈕 260 基板 270 按鍵 272 反光罩 280 次級反光罩 282 螢光粉 284 ❹ Ο 11II III II II IV II The above judging process can be performed by a comparator (not shown) in the control circuit 330, which strobes the signal with high priority and filters the low priority signal, thereby driving the luminaire 350 to The required color temperature illumination. In some occasions, such as homes, shops, etc., people prefer to use manual control to achieve flexible adjustment of the color temperature of the luminaire 350. At this time, the sensor 320 of the luminaire 350 is replaced by a manual switch. As shown in Fig. 3, it is a luminaire (not shown) of the second embodiment of the present invention. The lamp includes a substrate 270, a knob 260 pivoted in the middle of the substrate 270, a bracket 250 fixed to the knob 260, a plurality of first LED modules 220 mounted on the bracket 250, and a second LED The body module 240 and a reflector 280 are disposed opposite the bracket 250. The bracket 250 includes two arms Q 252 that are perpendicular to each other. The joint of the two arms 252 is fixed to the knob 260, so that the bracket 250 can change direction with the rotation of the knob 260, thereby changing the light exit angle of the lamp. A plurality of first light emitting diode modules 220 are fixed on the left arm portion 252 of the bracket 250, and a plurality of second light emitting diode modules 240 are fixed on the right arm portion 252, thereby the left and right sides of the bracket 250 Lights with different color temperatures can be emitted. To enable the lamp to be manually switched between the two color temperature modes, a button 272 is mounted to the bottom of the substrate 270. The button 272 is connected to the first and second LED modules 220 and 240 by wires (not shown in FIG. 7 201035479). When the button 272 is turned to the left, only the first LED module 220 is connected. It is turned on, so that the luminaire emits warm light; when the button 272 is turned to the right side, only the second illuminating diode module 240 is turned on, so that the luminaire emits cold light. The reflector 280 is used to converge the light emitted by the first and second LED modules 220 and 240 to increase the output intensity. In order to facilitate the user to adjust the color temperature, the above button 272 can be integrated into the knob 260 to realize a semi-automatic dimming function. As shown in Fig. 4, the configuration of the lamp is substantially the same as that of Fig. 3, and only the button 272 is omitted. The right arm portion 252 of the lamp holder 250 forms a positioning angle with the vertical line in the substrate 270 (ie, the angle between the right arm portion 252 and the right side of the substrate 270), which determines the switching time of the color temperature of the lamp, that is, only when When the positioning angle changes to a certain critical value as the rotation of the knob 260 changes, the color temperature of the lamp is switched. Preferably, the threshold value can be set to 45 degrees so that the rays of the first and second LED modules 220, 240 are symmetrically output to the outside of the lamp. When the knob 260 is rotated to change the positioning angle between 0 and 45 degrees, only the first LED module 220 is turned on, so that the lamp emits warm light; when the knob 260 is continuously rotated, the positioning angle is made. When the temperature exceeds 45 degrees, the first LED module 220 is turned off, and at the same time, the second LED module 240 is turned on, so that the lamp emits cold light. In order to enable the light of the first and second LED modules 220, 240 to be further concentrated, the reflector 28 of the lamp of FIG. 4 can be changed to the structure shown in FIG. It is formed by connecting two secondary light-emitting covers 282. Each of the secondary illuminators 282 is aligned with the center axis of the corresponding LED module 220, 240 at a respective side of the substrate 27A. Based on the design of the special configuration of the reflector 280, the lamp is set to turn on the corresponding LED diodes 220, 240 only when the positioning angle is 0 degrees and 90 degrees (ie, light up when the temperature is high) The first LED module 220 lights the second LED module 240 at 90 degrees to enable the light to enter the secondary reflector 282 at an optimum angle. In order to more flexibly adjust the color temperature of the output light, the phosphor powder originally integrated into the single light-emitting diodes 222, 242 can be separately separated. As shown in FIG. 6, the phosphors 284 are respectively applied to the inner wall surface of the secondary reflector 282 at the same thickness but different concentrations. At this time, the first and second LED modules 22 are 22 Only the blue light wafer (not shown) is left in the illuminating diodes 222 and 242 of the 〇 24 ,, so the first light emitting diode module 22 and the second light emitting diode module, and 240 The same quality, both emit the same blue light. After the blue light is incident on the phosphor powder 284 of the reflector 28, it is absorbed by the phosphor powder 284 to excite it to generate yellow light. Since the amount of the phosphor powder 284 on the two secondary reflectors 282 is different, the degree of blue light is different, and the color temperature of the synthesized white light is different. Through this design, different amounts of phosphor powder 284 can be applied to the human-level reflector 282 according to actual needs, thereby flexibly adjusting the color temperature of the output light. In summary, the present invention has indeed met the requirements of the invention patent, and 提出 legally proposed special shots. However, the above is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by those skilled in the art to the spirit of the invention are intended to be included in the following claims. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing an array of light-emitting diode modules of a light-emitting diode lamp according to a first embodiment of the present invention. 2 is a circuit block diagram of the light-emitting diode lamp of FIG. 1. Fig. 3 is a cross-sectional view showing a light-emitting diode lamp according to a second embodiment of the present invention. Fig. 4 is a perspective view showing a light-emitting diode lamp according to a third embodiment of the present invention. Fig. 5 is a cross-sectional view showing a light-emitting diode lamp according to a fourth embodiment of the present invention. Fig. 6 is a cross-sectional view showing a light-emitting diode lamp according to a fifth embodiment of the present invention. [Description of main component symbols] First light-emitting diode module 220 First light-emitting diode 222 Second light-emitting diode module 240 Second light-emitting diode 242 201035479 Bracket 250 Arm 252 Knob 260 Substrate 270 Button 272 Reflector 280 Secondary Reflector 282 Fluorescent Powder 284 ❹ Ο 11