以下,茲就本發明之實施形態予以說明。另,以下所說明之實施形態,皆顯示本發明之較佳的一具體例。因此,下述實施形態所示之數值、形狀、材料、構成要素、及構成要素的配置位置與連接形態等皆為一例,其用意並不在於限定本發明。因而,對於下述實施形態的構成要素中之未記載於顯示本發明的最上位概念之獨立請求項的構成要素,係將其作為任意構成要素而予以說明。Hereinafter, the embodiments of the present invention will be described. In addition, the embodiments described below all show a preferred specific example of the present invention. Therefore, the numerical values, shapes, materials, structural elements, and the arrangement positions and connection forms of the structural elements shown in the following embodiments are all examples, and they are not intended to limit the present invention. Therefore, among the constituent elements of the following embodiments, the constituent elements that are not described in the independent claims showing the highest concept of the present invention will be described as arbitrary constituent elements.
此外,各附圖為示意圖,並非為嚴格圖示。因此,各附圖中比例尺等不必非得一致。在各附圖中,對於實質上相同之構成給予相同符號,將重複的說明省略或簡化。In addition, the drawings are schematic diagrams, not strictly illustrations. Therefore, the scales in the drawings do not have to be consistent. In the drawings, the same symbols are given to substantially the same components, and repeated descriptions are omitted or simplified.
(實施形態1) 首先,利用圖1~圖3,對實施形態1的照明器具1之構成予以說明。圖1為實施形態1的照明器具1之設置例的示意圖。圖2為顯示相同照明器具1之電路構成的圖。圖3為顯示相同照明器具1之發光模組100的構成之圖。(Embodiment 1) First, the structure of the lighting fixture 1 of Embodiment 1 is demonstrated using FIGS. 1-3. Fig. 1 is a schematic diagram of an installation example of a lighting fixture 1 according to the first embodiment. FIG. 2 is a diagram showing the circuit configuration of the same lighting fixture 1. FIG. 3 is a diagram showing the structure of the light emitting module 100 of the same lighting fixture 1.
如圖1所示,本實施形態的照明器具1,係往下方(地板等)照射照明光的下照燈,設置於建築物之天花板2。例如,照明器具1,嵌入至天花板2而配設。As shown in FIG. 1, the lighting fixture 1 of this embodiment is a downlight that irradiates illuminating light downward (floor, etc.), and is installed on the ceiling 2 of a building. For example, the lighting fixture 1 is inserted into the ceiling 2 and arranged.
如圖1所示,照明器具1,具備:具有發光模組100之燈具單元10、及具有電源電路200之電源單元20。例如,燈具單元10,嵌入至天花板2的開口部2a而配設;電源單元20,配置於天花板2的背面(天花板內面)。另,天花板2的開口部2a,係用於將燈具單元10安裝於天花板2的安裝用孔,例如係貫通天花板2之圓形開口的貫通孔。As shown in FIG. 1, the lighting fixture 1 includes a lamp unit 10 having a light emitting module 100 and a power supply unit 20 having a power supply circuit 200. For example, the lamp unit 10 is inserted into the opening 2a of the ceiling 2 and arranged, and the power supply unit 20 is arranged on the back surface of the ceiling 2 (ceiling inner surface). The opening 2a of the ceiling 2 is an installation hole for attaching the lamp unit 10 to the ceiling 2, for example, a through hole that penetrates the circular opening of the ceiling 2.
燈具單元10,例如具備基台11、及固定在基台11之前方的框體12。發光模組100,安裝於基台11。基台11,例如係由鋁等金屬材料構成,不僅作為發光模組100之安裝部作用,亦作為將在發光模組100產生的熱散熱之散熱部而作用。框體12,藉由板片彈簧等安裝於天花板2的開口部2a。The lamp unit 10 includes, for example, a base 11 and a frame 12 fixed to the front of the base 11. The light emitting module 100 is installed on the base 11. The base 11 is made of, for example, a metal material such as aluminum, and not only functions as a mounting part of the light-emitting module 100, but also functions as a heat dissipation part for dissipating heat generated in the light-emitting module 100. The frame 12 is attached to the opening 2a of the ceiling 2 by a leaf spring or the like.
發光模組100,發出既定色的照明光。例如,發光模組100,發出白色光作為照明光。如圖2所示,發光模組100,具備發出既定色的光線之複數個發光部110。另,本實施形態中,發光模組100為LED模組;光源即發光部110,係由LED構成。The light emitting module 100 emits illuminating light of a predetermined color. For example, the light emitting module 100 emits white light as illuminating light. As shown in FIG. 2, the light-emitting module 100 includes a plurality of light-emitting parts 110 that emit light of a predetermined color. In addition, in this embodiment, the light-emitting module 100 is an LED module; the light source, that is, the light-emitting portion 110, is composed of LEDs.
發光模組100,具備發出的光色彼此不同之複數個發光部110。複數個發光部110,為3個以上。本實施形態中,發光模組100,係由以下3個發光部110構成:第1發光部111,發出第1色溫之光線;第2發光部112,發出較第1發光部111所發出之光線的色溫(第1色溫)更低的色溫亦即第2色溫之光線;以及第3發光部113,發出紅色光。作為一例,第1發光部111,發出色溫為6200K(第1色溫)的白色光;第2發光部112,發出色溫為2200K(第2色溫)的白色光;第3發光部113,發出峰值波長位於620nm~700nm之範圍的紅色單色光,其色溫(第3色溫)為1800K程度。The light-emitting module 100 includes a plurality of light-emitting parts 110 whose light colors are different from each other. There are three or more light emitting parts 110. In this embodiment, the light-emitting module 100 is composed of the following three light-emitting parts 110: a first light-emitting part 111, which emits light of a first color temperature; a second light-emitting part 112, which emits light than the first light-emitting part 111 The color temperature (the first color temperature) is lower, that is, the light of the second color temperature; and the third light-emitting part 113 emits red light. As an example, the first light-emitting portion 111 emits white light with a color temperature of 6200K (first color temperature); the second light-emitting portion 112 emits white light with a color temperature of 2200K (second color temperature); and the third light-emitting portion 113 emits a peak wavelength The color temperature (third color temperature) of red monochromatic light in the range of 620nm to 700nm is about 1800K.
第1發光部111,由串聯連接的複數個LED元件111a(第1LED元件)構成。具體而言,第1發光部111,係將6個LED元件111a串聯連接之串聯連接體。6個LED元件111a,彼此的構成及特性(IF-VF特性等)全部相同。因此,6個LED元件111a之光線的色溫為6200K。另,構成第1發光部111的LED元件111a之個數,並不限於6個,可為1個亦可為6個以外之複數個。The first light emitting section 111 is composed of a plurality of LED elements 111a (first LED elements) connected in series. Specifically, the first light-emitting portion 111 is a series connection body in which six LED elements 111a are connected in series. The six LED elements 111a have the same configuration and characteristics (IF-VF characteristics, etc.). Therefore, the color temperature of the light of the six LED elements 111a is 6200K. In addition, the number of LED elements 111a constituting the first light-emitting portion 111 is not limited to six, and may be one or plural other than six.
第2發光部112,由串聯連接的複數個LED元件112a(第2LED元件)構成。具體而言,第2發光部112,係將5個LED元件112a串聯連接之串聯連接體。5個LED元件112a,彼此的構成及特性(IF-VF特性等)全部相同。因此,5個LED元件112a之光線的色溫為2200K。另,構成第2發光部112的LED元件112a之個數,並不限於5個,可為1個亦可為5個以外之複數個。The second light emitting section 112 is composed of a plurality of LED elements 112a (second LED elements) connected in series. Specifically, the second light emitting unit 112 is a series connection body in which five LED elements 112a are connected in series. The five LED elements 112a have the same configuration and characteristics (IF-VF characteristics, etc.). Therefore, the color temperature of the light of the five LED elements 112a is 2200K. In addition, the number of LED elements 112a constituting the second light-emitting portion 112 is not limited to five, and may be one or plural other than five.
第3發光部113,由串聯連接的複數個LED元件113a(第3LED元件)構成。具體而言,第3發光部113,係將2個LED元件113a串聯連接之串聯連接體。2個LED元件113a,彼此的構成及特性(IF-VF特性等)全部相同。因此,2個LED元件113a之光線的光色為紅色。另,構成第3發光部113的LED元件113a之個數,並不限於2個,可為1個亦可為2個以外之複數個。The third light emitting section 113 is composed of a plurality of LED elements 113a (third LED elements) connected in series. Specifically, the third light-emitting portion 113 is a series connection body in which two LED elements 113a are connected in series. The two LED elements 113a have the same configuration and characteristics (IF-VF characteristics, etc.). Therefore, the light color of the light from the two LED elements 113a is red. In addition, the number of LED elements 113a constituting the third light-emitting portion 113 is not limited to two, and may be one or plural other than two.
第1發光部111、第2發光部112、及第3發光部113,設置於不同之電流路徑上。亦即,構成第1發光部111的LED元件111a、構成第2發光部112的LED元件112a、及構成第3發光部113的LED元件113a,並未串聯連接。本實施形態中,構成第2發光部112的LED元件112a與構成第3發光部113的LED元件113a成為並聯連接。The first light-emitting portion 111, the second light-emitting portion 112, and the third light-emitting portion 113 are provided on different current paths. That is, the LED element 111a constituting the first light emitting unit 111, the LED element 112a constituting the second light emitting unit 112, and the LED element 113a constituting the third light emitting unit 113 are not connected in series. In this embodiment, the LED element 112a constituting the second light-emitting portion 112 and the LED element 113a constituting the third light-emitting portion 113 are connected in parallel.
此外,若使各發光部110中串聯連接的複數個LED元件之順向電壓的總量為總Vf(合計Vf),則本實施形態中,各發光部110的元件列之總Vf的值,取決於各發光部110的LED元件之個數。因此,若使由6個LED元件111a構成的第1發光部111之總Vf為TVf1,使由5個LED元件112a構成的第2發光部112之總Vf為TVf2,使由2個LED元件113a構成的第3發光部113之總Vf為TVf3,則成為TVf1>TVf2>TVf3。In addition, if the total forward voltage of the plurality of LED elements connected in series in each light-emitting portion 110 is the total Vf (total Vf), the value of the total Vf of the element rows of each light-emitting portion 110 in this embodiment is It depends on the number of LED elements in each light-emitting part 110. Therefore, if the total Vf of the first light-emitting portion 111 composed of six LED elements 111a is set to TVf1, the total Vf of the second light-emitting portion 112 composed of five LED elements 112a is set to TVf2, and the total Vf of the second light emitting portion 112 composed of five LED elements 112a is set to TVf2. The total Vf of the third light-emitting portion 113 configured is TVf3, which becomes TVf1>TVf2>TVf3.
發光模組100,除了具備發光部110(第1發光部111、第2發光部112、第3發光部113)以外,進一步具備電流控制電路120。The light-emitting module 100 further includes a current control circuit 120 in addition to the light-emitting portion 110 (the first light-emitting portion 111, the second light-emitting portion 112, and the third light-emitting portion 113).
電流控制電路120,依據取決於從電源電路200對於電流控制電路120供給的電流量之電流輸出比,而對發光模組100的複數個發光部110中之與電流控制電路120連接的複數個發光部110供給電流。電流控制電路120包含電流檢測電路,檢測從電源電路200對於電流控制電路120供給的電流量。The current control circuit 120 emits light based on the current output ratio that depends on the amount of current supplied from the power supply circuit 200 to the current control circuit 120, and emits light to the plurality of light emitting parts 110 of the light emitting module 100 connected to the current control circuit 120 The section 110 supplies current. The current control circuit 120 includes a current detection circuit, and detects the amount of current supplied from the power supply circuit 200 to the current control circuit 120.
本實施形態中,電流控制電路120,與第2發光部112及第3發光部113連接,將對電流控制電路120供給的輸入電流對於第2發光部112及第3發光部113分配供給。此一情況,電流控制電路120,檢測從電源電路200對於電流控制電路120輸入的輸入電流之電流量(電流值)。而後,依照檢測到的電流量,決定用於對第2發光部112及第3發光部113分配的輸入電流之電流輸出比(分配比),電流控制電路120,以依據此一電流輸出比的電流量,將電流對於第2發光部112與第3發光部113分流。In this embodiment, the current control circuit 120 is connected to the second light-emitting unit 112 and the third light-emitting unit 113 and distributes the input current supplied to the current control circuit 120 to the second light-emitting unit 112 and the third light-emitting unit 113. In this case, the current control circuit 120 detects the amount of current (current value) of the input current input from the power supply circuit 200 to the current control circuit 120. Then, according to the detected current amount, the current output ratio (distribution ratio) of the input current used to distribute the second light-emitting portion 112 and the third light-emitting portion 113 is determined, and the current control circuit 120 is based on the current output ratio The amount of current divides the current between the second light-emitting part 112 and the third light-emitting part 113.
此外,電流控制電路120,將電流往與電流控制電路120連接的複數個發光部110分流時,使電流優先朝向與電流控制電路120連接的複數個發光部110中之順向電壓的總量小之發光部110流通。因此,電流控制電路120,使電流從順向電壓的總量小之發光部110開始流通,若從電源電路200對於電流控制電路120供給的電流量漸變大,則亦將電流朝向其他發光部110分流。In addition, the current control circuit 120, when shunting current to the plurality of light-emitting parts 110 connected to the current control circuit 120, prioritizes the current to the light-emitting parts 110 connected to the current control circuit 120. The total amount of forward voltage in the plurality of light-emitting parts 110 connected to the current control circuit 120 is small. The light-emitting part 110 circulates. Therefore, the current control circuit 120 causes the current to flow from the light-emitting part 110 whose total forward voltage is small, and if the amount of current supplied from the power supply circuit 200 to the current control circuit 120 gradually increases, the current is also directed to the other light-emitting parts 110. Diversion.
本實施形態中,於電流控制電路120連接第2發光部112與第3發光部113,相較於第2發光部112,第3發光部113之順向電壓的總量較小。因此,電流控制電路120,首先,使電流僅朝順向電壓的總量較第2發光部112更小之第3發光部113開始流通,隨著從電源電路200往電流控制電路120供給的電流量變大,使往第3發光部113分流的電流量增大。而後,若從電源電路200往電流控制電路120供給的電流量進一步變大,在第3發光部113流通之電流成為最大,則電流控制電路120,亦使電流往第2發光部112開始流通,使往第2發光部112分流的電流量增大。In this embodiment, the second light-emitting portion 112 and the third light-emitting portion 113 are connected to the current control circuit 120, and the total forward voltage of the third light-emitting portion 113 is smaller than that of the second light-emitting portion 112. Therefore, the current control circuit 120 first causes current to flow only to the third light emitting section 113 whose total forward voltage is smaller than that of the second light emitting section 112, and follows the current supplied from the power supply circuit 200 to the current control circuit 120. The larger the amount, the larger the amount of current shunted to the third light-emitting portion 113. Then, if the amount of current supplied from the power supply circuit 200 to the current control circuit 120 is further increased, and the current flowing in the third light-emitting part 113 becomes the maximum, the current control circuit 120 also causes the current to flow to the second light-emitting part 112. The amount of current shunted to the second light-emitting portion 112 is increased.
如此地構成的發光模組100,例如,具備圖3所示之構造。具體而言,發光模組100,具備基板130;複數個發光部110(第1發光部111、第2發光部112、第3發光部113)與電流控制電路120,設置於基板130。The light emitting module 100 configured in this way has, for example, the structure shown in FIG. 3. Specifically, the light-emitting module 100 includes a substrate 130; a plurality of light-emitting parts 110 (a first light-emitting part 111, a second light-emitting part 112, and a third light-emitting part 113) and a current control circuit 120 are provided on the substrate 130.
本實施形態中,第3發光部113,配置於基板130的中央部。具體而言,構成第3發光部113的2個LED113a並排配置在基板130之中央部。In this embodiment, the third light-emitting portion 113 is arranged at the center of the substrate 130. Specifically, the two LEDs 113 a constituting the third light-emitting portion 113 are arranged side by side in the center portion of the substrate 130.
此外,第2發光部112,分為複數個;第3發光部113,配置於複數第2發光部112的一方與另一方之間。具體而言,構成第2發光部112的LED元件112a,隔著第3發光部(LED元件113a)分為2個領域而配置;構成第3發光部113之LED元件113a,配置於配置在一方領域的LED元件112a與配置在另一方領域的LED元件112a之間。In addition, the second light-emitting portion 112 is divided into a plurality of pieces, and the third light-emitting portion 113 is arranged between one and the other of the plurality of second light-emitting portions 112. Specifically, the LED element 112a constituting the second light-emitting portion 112 is divided into two areas and arranged via the third light-emitting portion (LED element 113a); the LED element 113a constituting the third light-emitting portion 113 is arranged on one side Between the LED element 112a of one area and the LED element 112a arrange|positioned in the other area.
此外,第1發光部111,配置於第2發光部112與第3發光部113之間。具體而言,構成第1發光部111的LED元件111a,配置於構成第2發光部112的LED元件112a、與構成第3發光部113的LED元件113a之間。In addition, the first light-emitting portion 111 is arranged between the second light-emitting portion 112 and the third light-emitting portion 113. Specifically, the LED element 111a constituting the first light emitting unit 111 is arranged between the LED element 112a constituting the second light emitting unit 112 and the LED element 113a constituting the third light emitting unit 113.
藉由將第1發光部111、第2發光部112、及第3發光部113如此地配置,而可將從第1發光部111、第2發光部112、及第3發光部113分別發出之光線均勻地混色。尤其是,在將第1發光部111、第2發光部112、及第3發光部113如同後述地予以同步調色控制的情況,第1發光部111、第2發光部112、及第3發光部113,使其等之1個或複數個發光,但在任一明亮度的情況皆可均勻地混色。By arranging the first light-emitting portion 111, the second light-emitting portion 112, and the third light-emitting portion 113 in this way, it is possible to emit light from the first light-emitting portion 111, the second light-emitting portion 112, and the third light-emitting portion 113, respectively. The light mixes evenly. In particular, when the first light-emitting portion 111, the second light-emitting portion 112, and the third light-emitting portion 113 are controlled in a synchronized manner as described later, the first light-emitting portion 111, the second light-emitting portion 112, and the third light-emitting portion The part 113 causes one or more of them to emit light, but the colors can be mixed uniformly in any brightness.
本實施形態中,構成第1發光部111的LED元件111a、構成第2發光部112的LED元件112a、及構成第3發光部113的LED元件113a,係個別封裝化之表面安裝(SMD:Surface Mount Device)型的LED元件。In this embodiment, the LED element 111a constituting the first light-emitting portion 111, the LED element 112a constituting the second light-emitting portion 112, and the LED element 113a constituting the third light-emitting portion 113 are individually packaged and surface mounted (SMD: Surface Mount Device) type LED components.
具體而言,LED元件111a、112a、及113a,各自具備:白色樹脂製之封裝體(容器),具有凹部;1片以上的LED晶片(裸晶片),一次安裝於封裝體的凹部之底面;以及密封構件,封入至封裝體的凹部內。密封構件,例如以矽氧樹脂等透光性樹脂材料構成。Specifically, the LED elements 111a, 112a, and 113a each have: a package (container) made of white resin with a concave portion; one or more LED chips (bare chips) are mounted on the bottom surface of the concave portion of the package at a time; And the sealing member is enclosed in the recess of the package. The sealing member is made of, for example, a translucent resin material such as silicone resin.
LED晶片,係以既定直流電力發光之半導體發光元件的一例,為發出單色可見光之裸晶片。此一情況,LED元件111a及112a之LED晶片,例如為通電則發出藍色光的藍色LED晶片,例如在440nm~470nm之範圍具有峰值波長。而LED元件111a及112a中,為了獲得白色光,而於密封構件含有YAG(釔鋁石榴石)等黃色螢光體,將來自藍色LED晶片之藍色光作為激發光而螢光發光。LED元件111a及112a中,於黃色螢光體吸收藍色LED晶片之藍色光的一部分,激發黃色螢光體而從黃色螢光體放出黃色光,此黃色光與黃色螢光體未吸收之藍色光混合而產生白色光。The LED chip is an example of a semiconductor light-emitting element that emits light with a predetermined DC power, and is a bare chip that emits monochromatic visible light. In this case, the LED chips of the LED elements 111a and 112a are, for example, blue LED chips that emit blue light when energized, and have a peak wavelength in the range of 440 nm to 470 nm, for example. In the LED elements 111a and 112a, in order to obtain white light, the sealing member contains a yellow phosphor such as YAG (yttrium aluminum garnet), and the blue light from the blue LED chip is used as excitation light to emit fluorescent light. In the LED elements 111a and 112a, the yellow phosphor absorbs part of the blue light of the blue LED chip, excites the yellow phosphor and emits yellow light from the yellow phosphor. This yellow light and the blue that the yellow phosphor does not absorb The color light is mixed to produce white light.
然則,第1發光部111,發出色溫較第2發光部112所發出之光線的色溫更高之光線。因此,為了使第1發光部111所發出之光線的色溫較第2發光部112所發出之光線的色溫更高,而調整密封構件所包含之螢光體的種類(例如,紅色螢光體、綠色螢光體、藍色螢光體)與量,進行第1發光部111及第2發光部112之色度調整。However, the first light-emitting portion 111 emits light having a higher color temperature than the light emitted by the second light-emitting portion 112. Therefore, in order to make the color temperature of the light emitted by the first light-emitting portion 111 higher than the color temperature of the light emitted by the second light-emitting portion 112, the type of phosphor contained in the sealing member (for example, red phosphor, The chromaticity adjustment of the first light-emitting part 111 and the second light-emitting part 112 is performed with the green phosphor and the blue phosphor) and the amount.
另一方面,LED元件113a之LED晶片,為通電則發出紅色光的紅色LED晶片,例如在620nm~700nm之範圍具有峰值波長。LED元件113a,將紅色LED晶片之紅色光直接取出,因而於密封構件,並未包含螢光體。On the other hand, the LED chip of the LED element 113a is a red LED chip that emits red light when energized, and has a peak wavelength in the range of 620 nm to 700 nm, for example. The LED element 113a directly takes out the red light of the red LED chip, so the sealing member does not include a phosphor.
如此地構成的LED元件111a、112a、及113a,例如係藉由銲接安裝於基板130。The LED elements 111a, 112a, and 113a configured in this way are mounted on the substrate 130 by soldering, for example.
此外,電流控制電路120,構成為具有複數個引線端子之IC封裝,例如藉由銲接安裝於基板130。In addition, the current control circuit 120 is configured as an IC package with a plurality of lead terminals, and is mounted on the substrate 130 by welding, for example.
基板130,為形成有金屬配線(未圖示)的印刷配線基板,在基板130之表面形成既定圖案的金屬配線。LED元件111a、112a、及113a、與電流控制電路120,與形成在基板130的金屬配線銲接。LED元件111a、112a、及113a、與電流控制電路120,藉由此等金屬配線,而以圖2所示之電路構造電性連接。The substrate 130 is a printed wiring substrate on which metal wiring (not shown) is formed, and a predetermined pattern of metal wiring is formed on the surface of the substrate 130. The LED elements 111a, 112a, and 113a, and the current control circuit 120 are soldered to the metal wiring formed on the substrate 130. The LED elements 111a, 112a, and 113a and the current control circuit 120 are electrically connected with the circuit structure shown in FIG. 2 by such metal wiring.
作為基板130,例如可使用:由絕緣性樹脂材料構成之樹脂基板、表面以樹脂被膜被覆的由金屬材料構成之金屬基底基板、陶瓷材料的燒結體之陶瓷基板、或由玻璃材料構成之玻璃基板等。此外,在LED元件111a、112a、及113a、與電流控制電路120之配線路徑變得複雜的情況,藉由使用多層基板作為基板130,而可簡單地施行其等之電性連接。As the substrate 130, for example, a resin substrate made of an insulating resin material, a metal base substrate made of a metal material whose surface is coated with a resin film, a ceramic substrate made of a sintered ceramic material, or a glass substrate made of a glass material Wait. In addition, when the wiring path between the LED elements 111a, 112a, and 113a and the current control circuit 120 becomes complicated, by using a multi-layer substrate as the substrate 130, electrical connection thereof can be easily performed.
另,基板130,不限為剛性基板,亦可為撓性基板。此外,亦可於基板130之表面,以覆蓋金屬配線的方式形成光阻膜作為絕緣被膜。In addition, the substrate 130 is not limited to a rigid substrate, but may also be a flexible substrate. In addition, a photoresist film may be formed as an insulating film on the surface of the substrate 130 to cover the metal wiring.
此外,於基板130設置複數個輸入端子131,其等與從電源電路200導出之電線30電性連接。本實施形態中,複數個輸入端子131,由第1輸入端子131a、第2輸入端子131b、及第3輸入端子131c構成。In addition, a plurality of input terminals 131 are provided on the substrate 130, and the input terminals 131 are electrically connected to the wires 30 derived from the power supply circuit 200. In this embodiment, the plural input terminals 131 are composed of a first input terminal 131a, a second input terminal 131b, and a third input terminal 131c.
從電源電路200往發光模組100輸入的電流(輸入電流),通過第1輸入端子131a及第2輸入端子131b此2個。另一方面,從發光模組100往電源電路200輸出的電流(輸出電流),通過第3輸入端子131c。The current (input current) input from the power supply circuit 200 to the light emitting module 100 passes through two of the first input terminal 131a and the second input terminal 131b. On the other hand, the current (output current) output from the light emitting module 100 to the power supply circuit 200 passes through the third input terminal 131c.
回到圖1,電源單元20,具備:筐體21;電路基板22,收納於筐體21;複數個電路元件23,安裝於電路基板22;以及端子台24,接收來自交流電源3(例如商用電源)的交流電力。筐體21,為金屬製或絕緣樹脂製之殼體。電路基板22,為形成有金屬配線的印刷配線基板。端子台24,例如接收AC100V之交流電壓以作為輸入電壓。將端子台24接收到之交流電壓,往電源電路200供給。Returning to FIG. 1, the power supply unit 20 includes: a housing 21; a circuit board 22 housed in the housing 21; a plurality of circuit elements 23 mounted on the circuit board 22; and a terminal block 24 that receives an AC power source 3 (for example, commercial Power supply) AC power. The housing 21 is a case made of metal or insulating resin. The circuit board 22 is a printed wiring board on which metal wiring is formed. The terminal block 24 receives, for example, an AC voltage of AC100V as an input voltage. The AC voltage received by the terminal block 24 is supplied to the power supply circuit 200.
電源電路200,由複數個電路元件23構成。複數個電路元件23,例如為電容元件(電解電容器、陶瓷電容器等)、電阻元件(電阻器等)、整流電路元件、線圈元件、變壓器、雜訊濾波器、二極體、積體電路元件(IC)、或半導體元件(FET等)等。The power supply circuit 200 is composed of a plurality of circuit elements 23. The plurality of circuit elements 23 are, for example, capacitive elements (electrolytic capacitors, ceramic capacitors, etc.), resistive elements (resistors, etc.), rectifier circuit elements, coil elements, transformers, noise filters, diodes, integrated circuit elements ( IC), or semiconductor components (FET, etc.), etc.
電源電路200,依據來自外部電源的輸入電壓而產生用於使發光模組100發光的電力,將產生的電力往發光模組100輸出。此外,電源電路200,具有產生用於使發光模組100發光的電力之電源功能,且具有控制發光模組100的照明態樣之照明控制功能。具體而言,電源電路200,作為照明控制功能,具有改變發光模組100之照明光的明亮度之調光功能、及改變發光模組100之照明光的光色之調色功能。The power supply circuit 200 generates power for causing the light-emitting module 100 to emit light according to an input voltage from an external power source, and outputs the generated power to the light-emitting module 100. In addition, the power supply circuit 200 has a power supply function for generating power for causing the light-emitting module 100 to emit light, and has a lighting control function for controlling the lighting state of the light-emitting module 100. Specifically, the power supply circuit 200, as a lighting control function, has a dimming function to change the brightness of the illuminating light of the light-emitting module 100 and a toning function to change the light color of the illuminating light of the light-emitting module 100.
本實施形態中,電源電路200具有同步調色功能,使發光模組100的明亮度與光色連動改變。例如,若發光模組100的明亮度增大則改變為色溫高的光線,若發光模組100的明亮度限縮減小則改變為色溫低的光線。藉此,可實現改變為對人而言令人愉快的明亮度及光色之照明光。In this embodiment, the power supply circuit 200 has a synchronous toning function, so that the brightness and light color of the light-emitting module 100 can be changed in conjunction. For example, if the brightness of the light-emitting module 100 increases, it changes to light with a high color temperature, and if the brightness of the light-emitting module 100 decreases, it changes to a light with a low color temperature. In this way, it is possible to realize the change into the illuminating light of the brightness and light color that is pleasant for people.
此一情況,發光模組100之同步調色,可藉由調光開關4控制。調光開關4,例如設置於壁面等,設置於交流電源3與電源電路200(端子台24)之間的配線路徑上。調光開關4,例如為控制交流電壓的相位之相位控制式的調光器(二線式調光器)。此一情況,藉由以調光開關4控制從交流電源3供給的交流電壓之相位角(導通角),而改變往發光模組100的輸入電流。具體而言,藉由電源電路200,產生取決於經調光開關4調光控制的交流電壓之輸入電流。如此地,可藉由以調光開關4調整發光模組100的明亮度,而亦調整發光模組100的光色。另,調光開關4,例如具備使用者可操作可能之滑件或旋鈕等操作部,依照使用者所進行之操作部的操作而控制相位角(導通角)。In this case, the synchronous color adjustment of the light-emitting module 100 can be controlled by the dimmer switch 4. The dimmer switch 4 is provided, for example, on a wall surface or the like, and is provided on a wiring path between the AC power supply 3 and the power supply circuit 200 (terminal block 24). The dimmer switch 4 is, for example, a phase-controlled dimmer (two-wire dimmer) that controls the phase of the AC voltage. In this case, by controlling the phase angle (conduction angle) of the AC voltage supplied from the AC power source 3 with the dimmer switch 4, the input current to the light-emitting module 100 is changed. Specifically, the power supply circuit 200 generates an input current that depends on the AC voltage controlled by the dimming switch 4. In this way, the brightness of the light-emitting module 100 can be adjusted by the dimmer switch 4, and the light color of the light-emitting module 100 can also be adjusted. In addition, the dimmer switch 4 is provided with an operation part such as a slider or a knob that can be operated by the user, and controls the phase angle (conduction angle) in accordance with the operation of the operation part performed by the user.
本實施形態中,電源電路200,係雙電路控制電源,作為用於使發光模組100之發光部110發光的電力,將2股輸入電力往發光模組100輸出。具體而言,電源電路200,對具備第1發光部111、第2發光部112、及第3發光部113此3個發光部110的發光模組100,輸出2股輸入電力。如此地,從電源電路200對發光模組100供給的電力之輸出股數,較發光部110之個數(本實施形態中為3個)更少。亦即,電源電路200之電源電路數,較發光部110之發光色數(即光源色數)更少。In this embodiment, the power supply circuit 200 is a dual-circuit control power supply, which serves as power for making the light-emitting portion 110 of the light-emitting module 100 emit light, and outputs two input powers to the light-emitting module 100. Specifically, the power supply circuit 200 outputs two input powers to the light-emitting module 100 including the three light-emitting units 110 of the first light-emitting unit 111, the second light-emitting unit 112, and the third light-emitting unit 113. In this way, the number of output strands of the power supplied from the power supply circuit 200 to the light-emitting module 100 is smaller than the number of the light-emitting parts 110 (three in this embodiment). That is, the number of power circuits of the power circuit 200 is less than the number of light-emitting colors of the light-emitting portion 110 (ie, the number of light-source colors).
從電源電路200往發光模組100輸出的2股輸入電力,可藉由電源電路200獨立控制。具體而言,從電源電路200,將作為用於使發光模組100之發光部110發光的驅動電流而獨立控制之2股直流電力,對發光模組100供給以作為輸入電流。本實施形態中,從電源電路200往發光模組100輸出的2股輸入電流,一方往第1發光部111供給,另一方往電流控制電路120供給。The two input powers output from the power circuit 200 to the light-emitting module 100 can be independently controlled by the power circuit 200. Specifically, from the power supply circuit 200, two DC powers independently controlled as a driving current for causing the light-emitting portion 110 of the light-emitting module 100 to emit light are supplied to the light-emitting module 100 as an input current. In this embodiment, the two input currents output from the power supply circuit 200 to the light-emitting module 100 are supplied to the first light-emitting part 111 and the other to the current control circuit 120.
電源單元20與燈具單元10係由電線30連接。因此,將以電源單元20之電源電路200產生的直流電力,經由電線30,往燈具單元10之發光模組100供給。具體而言,以電源電路200產生反應調光開關4所進行之調光控制的電流,將產生的電流作為往發光模組100的輸入電流,經由電線30從電源電路200對發光模組100供給。另,電線30,為電源線等電力線。The power supply unit 20 and the lamp unit 10 are connected by a wire 30. Therefore, the DC power generated by the power circuit 200 of the power supply unit 20 is supplied to the light-emitting module 100 of the lamp unit 10 via the wire 30. Specifically, the power circuit 200 generates a current that reflects the dimming control performed by the dimmer switch 4, and uses the generated current as the input current to the light-emitting module 100, and supplies the light-emitting module 100 from the power circuit 200 through the wire 30 . In addition, the electric wire 30 is a power line such as a power supply line.
本實施形態中,電源電路200,往第1發光部111與電流控制電路120輸出直流電力,故電線30,為下述合計3條電力線:從電源電路200往發光模組100輸入的輸入電流流通之2條電力線、及從發光模組100往電源電路200輸出的輸出電流流通之1條電力線。In this embodiment, the power supply circuit 200 outputs DC power to the first light-emitting unit 111 and the current control circuit 120, so the electric wire 30 is a total of three power lines as follows: the input current from the power supply circuit 200 to the light-emitting module 100 flows 2 power lines, and 1 power line through which the output current from the light-emitting module 100 to the power supply circuit 200 flows.
接著,利用圖4~圖6D,對於實施形態1的照明器具1之調色控制,與比較例1的照明器具1X之調色控制比較而予以說明。圖4為,顯示比較例1的照明器具1X之電路構成的圖。圖5為,顯示實施形態1的照明器具1與比較例1的照明器具1X之調色控制所產生的照明光之光色變化的xy色度圖。圖6A~圖6D為,顯示進行實施形態1的照明器具1之調色控制時的電流之流動的圖。Next, using FIGS. 4 to 6D, the color adjustment control of the lighting fixture 1 of Embodiment 1 will be described in comparison with the color adjustment control of the lighting fixture 1X of Comparative Example 1. FIG. FIG. 4 is a diagram showing the circuit configuration of the lighting fixture 1X of Comparative Example 1. FIG. FIG. 5 is an xy chromaticity diagram showing the light color change of the illuminating light caused by the color adjustment control of the luminaire 1 of the first embodiment and the luminaire 1X of the comparative example 1. FIG. 6A to 6D are diagrams showing the flow of current when the color adjustment control of the lighting fixture 1 according to the first embodiment is performed.
如圖4所示,比較例1的照明器具1X,具備:發光模組100X,具有發出色溫為6200K之光線的第1發光部111與發出色溫為2200K之光線的第2發光部112;以及電源電路200。比較例1的照明器具1X,藉由以電源電路200控制第1發光部111及第2發光部112的出光量比,而可進行照明器具1X之照明光的調色。As shown in FIG. 4, the lighting fixture 1X of Comparative Example 1 includes: a light-emitting module 100X having a first light-emitting portion 111 that emits light with a color temperature of 6200K and a second light-emitting portion 112 that emits light with a color temperature of 2200K; and a power supply Circuit 200. In the lighting fixture 1X of Comparative Example 1, the power supply circuit 200 controls the light output ratio of the first light-emitting portion 111 and the second light-emitting portion 112, so that the lighting light of the lighting fixture 1X can be toned.
然而,比較例1的照明器具1X,如圖5之虛線所示,僅可在將對應於6200K之色度點P1
與對應於2200K之色度點PX5
此兩點連結的直線上進行調色。亦即,僅能夠以將色度點P1
與色度點PX5
此兩點連結的直線上之色度,改變照明光的色溫。However, the lighting fixture 1X Comparative Example 1, the dashed lines shown in FIG. 5, only the corresponding to the chromaticity point P of 6200K to 2200K corresponding to color point P of the straight line connecting the two points X5 and dim 1 color. That is, only on the straight line can chromaticity chromaticity point and the chromaticity points P 1 P X5 connecting the two points, and changing the color temperature of the illumination light.
因此,比較例1的照明器具1,與圖5之以曲線表示的黑體軌跡之間產生色偏,無法以追蹤黑體軌跡之方式改變照明光的色溫,難以重現滿足黑體軌跡之全域的白色光。Therefore, the lighting fixture 1 of Comparative Example 1 has a color shift between the black body locus shown in the curve in FIG. 5, and the color temperature of the illumination light cannot be changed by tracking the black body locus, and it is difficult to reproduce the white light that satisfies the entire range of the black body locus. .
相對於此,於本實施形態的照明器具1之發光模組100,除了設置發出色溫為6200K之光線的第1發光部111及發出色溫為2200K之光線的第2發光部112以外,進一步設置發出紅色光的第3發光部113。而後,從電源電路200對發光模組100供給2股輸入電流,將其一方往第1發光部111供給,將其另一方往電流控制電路120供給。進一步,電流控制電路120,依照該另一方的輸入電流之電流量,將該輸入電流往第2發光部112及第3發光部113分配供給。In contrast, the light-emitting module 100 of the luminaire 1 of this embodiment is provided with a first light-emitting portion 111 that emits light with a color temperature of 6200K and a second light-emitting portion 112 that emits light with a color temperature of 2200K. The third light emitting part 113 of red light. Then, two input currents are supplied from the power supply circuit 200 to the light emitting module 100, one of which is supplied to the first light emitting section 111, and the other is supplied to the current control circuit 120. Furthermore, the current control circuit 120 distributes and supplies the input current to the second light-emitting portion 112 and the third light-emitting portion 113 in accordance with the current amount of the other input current.
具體而言,對第1發光部111、第2發光部112、及第3發光部113供給電流,使其與圖5之將色度點P1
、P2
、P3
、P4
、P5
各點連結的直線對應而成為如下表1所示之出光量比,改變發光模組100之照明光的色溫及明亮度。另,色度點P1
、P2
、P3
、P4
、P5
,表示圖5之xy色度圖的色度座標。Specifically, current is supplied to the first light-emitting portion 111, the second light-emitting portion 112, and the third light-emitting portion 113 so as to be aligned with the chromaticity points P 1 , P 2 , P 3 , P 4 , and P 5 of FIG. 5 The straight line connecting each point corresponds to the light output ratio shown in Table 1 below, and the color temperature and brightness of the illumination light of the light emitting module 100 are changed. In addition, the chromaticity points P 1 , P 2 , P 3 , P 4 , and P 5 represent the chromaticity coordinates of the xy chromaticity diagram in FIG. 5.
【表1】 【Table 1】
更具體而言,色度點為P1
時,如圖6A所示,從電源電路200,對發光模組100僅輸出第1輸入電流IIN1
。將供給至發光模組100的第1輸入電流IIN1
,作為驅動電流IL1
僅往第1發光部111供給。藉此,使發光模組100中僅第1發光部111發光,發光模組100,發出色溫為6200K之照明光。More specifically, the chromaticity point P 1, as shown in FIG. 6A, the power supply circuit 200, only the light emitting module 100 outputs the first input current I IN1. The first input current I IN1 supplied to the light-emitting module 100 is supplied only to the first light-emitting part 111 as the driving current I L1. Thereby, only the first light-emitting part 111 in the light-emitting module 100 emits light, and the light-emitting module 100 emits illuminating light with a color temperature of 6200K.
此外,在色度點為P1
至P3
為止之間,如圖6B及圖6C所示,從電源電路200,對發光模組100輸出第1輸入電流IIN1
及第2輸入電流IIN2
此2股輸入電流。In addition, between the chromaticity points P 1 to P 3 , as shown in FIGS. 6B and 6C, the power supply circuit 200 outputs the first input current I IN1 and the second input current I IN2 to the light emitting module 100. Two input currents.
其中,第1輸入電流IIN1
,作為驅動電流IL1
僅對第1發光部111供給,使第1發光部111發光。另一方面,將第2輸入電流IIN2
,對電流控制電路120供給。Among them, the first input current I IN1 is supplied as the drive current I L1 to only the first light-emitting section 111 to cause the first light-emitting section 111 to emit light. On the other hand, the second input current I IN2 is supplied to the current control circuit 120.
此時,電流控制電路120,依照第2輸入電流IIN2
的電流量,將第2輸入電流IIN2
往第2發光部112及第3發光部113分配供給,但本實施形態中,電流控制電路120,使電流優先往與電流控制電路120連接的複數個發光部110中之順向電壓的總量小之發光部110流通。At this time, the current control circuit 120, in accordance with the second amount of current to the input current I IN2, the second input current I IN2 113 distributive supply portion 3 emitting light-emitting portion 112 to the second the second, but the present embodiment, the current control circuit 120. The current is preferentially flowed to the light-emitting portion 110 having a small total forward voltage among the plurality of light-emitting portions 110 connected to the current control circuit 120.
因此,在色度點為P1
~P2
時,如圖6B所示,電流控制電路120,使第2輸入電流IIN2
僅往順向電壓的總量較第2發光部112更小之第3發光部113開始流通。亦即,第2輸入電流IIN2
,直接作為驅動電流IL3
而對第3發光部113供給,對第2發光部112並未供給電流。藉此,使第3發光部113發光,第2發光部112不發光。Therefore, when the chromaticity points are P 1 to P 2 , as shown in FIG. 6B, the current control circuit 120 makes the second input current I IN2 the total forward voltage smaller than that of the second light-emitting portion 112. 3 The light emitting unit 113 starts to circulate. That is, the second input current I IN2 is directly supplied as the drive current I L3 to the third light-emitting part 113, and no current is supplied to the second light-emitting part 112. Thereby, the third light-emitting portion 113 is caused to emit light, and the second light-emitting portion 112 does not emit light.
其後,若第2輸入電流IIN2
之比例較第1輸入電流IIN1
逐漸變大,則流通於第3發光部113的驅動電流IL3
亦漸變大,若第2輸入電流IIN2
達到可於第3發光部113流通之最大電流(色度點P3
),則如圖6C所示,電流控制電路120,將第2輸入電流IIN2
亦往第2發光部112分流。亦即,將第2輸入電流IIN2
,分流為往第2發光部112的驅動電流IL2
、與往第3發光部113的驅動電流IL3
。Thereafter, if the ratio of the second input current I IN2 is gradually greater than that of the first input current I IN1 , the driving current I L3 flowing through the third light-emitting part 113 will also gradually increase. If the second input current I IN2 reaches The maximum current (chromaticity point P 3 ) flowing through the third light-emitting part 113 is shown in FIG. 6C, and the current control circuit 120 also shunts the second input current I IN2 to the second light-emitting part 112. That is, the second input current I IN2, is split into a driving current 112 of the second light emitting portion I L2, I L3 and the drive current to the light emitting portion 113 of the third.
其後,若相對於第1輸入電流IIN1
的第2輸入電流IIN2
之比例變大,則第2輸入電流IIN2
之電流增加分,直接成為第2發光部112的驅動電流IL2
之增加分。亦即,流通於第3發光部113的驅動電流IL3
維持一定,而流通於第2發光部112的驅動電流IL2
之比例漸增加。After that, if the ratio of the second input current I IN2 to the first input current I IN1 becomes larger, the current increase of the second input current I IN2 directly becomes the increase of the driving current I L2 of the second light-emitting part 112 Minute. That is, the driving current I L3 flowing through the third light-emitting portion 113 is kept constant, and the ratio of the driving current I L2 flowing through the second light-emitting portion 112 gradually increases.
如此地,在色度點為P1
~P3
時,第1發光部111、第2發光部112、及第3發光部113,分別藉由第1輸入電流IIN1
及第2輸入電流IIN2
獨立控制而發光,依照第1發光部111、第2發光部112、及第3發光部113的出光量比,沿著將色度點P1
與色度點P3
此兩點連結的直線進行調色控制。亦即,發光模組100,發出色溫為6200K~2700K之照明光。另,本實施形態中,施行同步調色,故隨著色溫變低而發光模組100的明亮度亦緩緩地變小。In this way, when the chromaticity points are P 1 to P 3 , the first light-emitting portion 111, the second light-emitting portion 112, and the third light-emitting portion 113 use the first input current I IN1 and the second input current I IN2, respectively. Independently controlled to emit light, in accordance with the ratio of the light output of the first light-emitting portion 111, the second light-emitting portion 112, and the third light-emitting portion 113, along the line connecting the chromaticity point P 1 and the chromaticity point P 3 Toning control. That is, the light-emitting module 100 emits illumination light with a color temperature of 6200K-2700K. In addition, in this embodiment, synchronous toning is performed, so as the color temperature becomes lower, the brightness of the light-emitting module 100 gradually becomes smaller.
此外,在色度點為P3
至P4
為止之間時,如圖6C所示,從電源電路200,對發光模組100輸出第1輸入電流IIN1
及第2輸入電流IIN2
此2股輸入電流。In addition, when the chromaticity point is between P 3 and P 4 , as shown in FIG. 6C, the power supply circuit 200 outputs the first input current I IN1 and the second input current I IN2 to the light emitting module 100. Input Current.
其中,第1輸入電流IIN1
,作為驅動電流IL1
僅對第1發光部111供給,使第1發光部111發光。另一方面,將第2輸入電流IIN2
,對電流控制電路120供給。電流控制電路120,依照第2輸入電流IIN2
的電流量,將第2輸入電流IIN2
往第2發光部112及第3發光部113分配供給,但本實施形態中,電流控制電路120,使電流優先往與電流控制電路120連接的複數個發光部110中之順向電壓的總量小之發光部110流通。Among them, the first input current I IN1 is supplied as the drive current I L1 to only the first light-emitting section 111 to cause the first light-emitting section 111 to emit light. On the other hand, the second input current I IN2 is supplied to the current control circuit 120. A current control circuit 120, in accordance with the second amount of current to the input current I IN2, the second input current I IN2 113 distributive supply portion 3 emitting light-emitting portion 112 to the second the second, but the present embodiment, the current control circuit 120, so that The current preferentially flows to the light-emitting portion 110 having a small total forward voltage among the plurality of light-emitting portions 110 connected to the current control circuit 120.
因此,色度點為P3
至P4
時,與上述內容同樣地,如圖6C所示,電流控制電路120,往第2發光部112供給驅動電流IL2
且亦往第3發光部113供給驅動電流IL3
。而本實施形態中,在色度點為P3
至P5
,隨著往第1發光部111供給的驅動電流IL1
變小,而往第2發光部112供給的驅動電流IL2
變大。而後,在色度點P4
時,往第1發光部111供給的驅動電流IL1
成為零。Therefore, when the chromaticity points are P 3 to P 4 , as shown in FIG. 6C, the current control circuit 120 supplies the driving current I L2 to the second light-emitting portion 112 and also supplies the third light-emitting portion 113 as shown in FIG. 6C. Drive current I L3 . In this embodiment, the chromaticity points are P 3 to P 5 , and as the driving current I L1 supplied to the first light-emitting part 111 decreases, the driving current I L2 supplied to the second light-emitting part 112 increases. Then, the chromaticity points P 4, the driving current supplied to the first light emitting portion 111 I L1 becomes zero.
如此地,關於色度點為P3
~P4
時,第1發光部111、第2發光部112、及第3發光部113,亦分別藉由第1輸入電流IIN1
及第2輸入電流IIN2
獨立控制而發光,依照第1發光部111、第2發光部112、及第3發光部113的出光量比,沿著將色度點P3
與色度點P4
此兩點連結的直線上進行調色控制。亦即,發光模組100,發出色溫為2700K~2200K之照明光。另,本實施形態中,施行同步調色,故隨著色溫變低,發光模組100的明亮度亦緩緩地變小。In this way, when the chromaticity points are P 3 to P 4 , the first light-emitting portion 111, the second light-emitting portion 112, and the third light-emitting portion 113 also use the first input current I IN1 and the second input current I, respectively. IN2 independently controlled to emit light, in accordance with 111, the second light-emitting section 112, the third light emitting portion than the first light emitting section 113, along the chromaticity point and the chromaticity point of the straight line P 3 P 4 is connected to the two points Color control on the top. That is, the light-emitting module 100 emits illuminating light with a color temperature of 2700K-2200K. In addition, in this embodiment, synchronous toning is implemented, so as the color temperature becomes lower, the brightness of the light-emitting module 100 gradually becomes smaller.
此外,在色度點為P4
至P5
為止之間,如圖6D所示,從電源電路200,對發光模組100僅輸出第2輸入電流IIN2
。將供給至發光模組100的第2輸入電流IIN2
,往電流控制電路120供給。In addition, between the chromaticity points from P 4 to P 5 , as shown in FIG. 6D, from the power supply circuit 200, only the second input current I IN2 is output to the light emitting module 100. The second input current I IN2 supplied to the light-emitting module 100 is supplied to the current control circuit 120.
此時,電流控制電路120,依照第2輸入電流IIN2
的電流量,將第2輸入電流IIN2
往第2發光部112及第3發光部113分配供給,但本實施形態中,電流控制電路120,使電流優先往與電流控制電路120連接的複數個發光部110中之順向電壓的總量小之發光部110流通。At this time, the current control circuit 120, in accordance with the second amount of current to the input current I IN2, the second input current I IN2 113 distributive supply portion 3 emitting light-emitting portion 112 to the second the second, but the present embodiment, the current control circuit 120. The current is preferentially flowed to the light-emitting portion 110 having a small total forward voltage among the plurality of light-emitting portions 110 connected to the current control circuit 120.
因此,在色度點為P4
至P5
時,如圖6D所示,電流控制電路120,與上述內容同樣地,往第2發光部112供給驅動電流IL2
且亦往第3發光部113供給驅動電流IL3
,但相較於第2發光部112,第3發光部113之順向電壓的總量較小,故往第3發光部113供給的驅動電流IL3
,相較於往第2發光部112供給的驅動電流IL2
常時較大。Therefore, when the chromaticity points are P 4 to P 5 , as shown in FIG. 6D, the current control circuit 120 supplies the driving current I L2 to the second light-emitting portion 112 and also to the third light-emitting portion 113 in the same manner as described above. The driving current I L3 is supplied, but the total forward voltage of the third light-emitting part 113 is smaller than that of the second light-emitting part 112. Therefore, the driving current I L3 supplied to the third light-emitting part 113 is compared with that of the third light-emitting part 113. 2 The drive current I L2 supplied by the light emitting unit 112 is always large.
本實施形態中,在色度點為P4
至P5
,控制使往第2發光部112供給的驅動電流IL2
緩緩地變小。而後,在色度點P5
時,往第2發光部112供給的驅動電流IL2
成為零,僅對第3發光部113供給驅動電流IL3
。In this embodiment, when the chromaticity points are P 4 to P 5 , the control is controlled so that the driving current I L2 supplied to the second light-emitting portion 112 is gradually reduced. Then, the chromaticity points P 5, the driving current I L2 is supplied to the second light-emitting portion 112 becomes zero, the drive current I L3 is supplied only to the third light emitting portion 113.
如此地,在色度點為P4
~P5
時,第1發光部111並未發光,僅第2發光部112及第3發光部113藉由第2輸入電流IIN2
獨立控制而發光,依照第2發光部112及第3發光部113的出光量比,沿著將色度點P4
與色度點P5
此兩點連結的直線進行調色控制。亦即,發光模組100,發出色溫為2200K~1800K之照明光。另,本實施形態中,施行同步調色,故隨著色溫變低而發光模組100的明亮度亦緩緩地變小。In this way, when the chromaticity points are P 4 to P 5 , the first light-emitting portion 111 does not emit light, and only the second light-emitting portion 112 and the third light-emitting portion 113 are independently controlled by the second input current I IN2 to emit light, according to the second light-emitting section 112 and the third light emitting section 113 ratio, the toner for controlling the color point along a straight line and the chromaticity point P 4 P 5 is connected to the two points. That is, the light-emitting module 100 emits illuminating light with a color temperature of 2200K to 1800K. In addition, in this embodiment, synchronous toning is performed, so as the color temperature becomes lower, the brightness of the light-emitting module 100 gradually becomes smaller.
如同上述,本實施形態的照明器具1中,如圖5之實線所示,從高色溫至低色溫進行調色控制的情況,在色度點P3
至P5
,相對地使往第3發光部113流通的電流量緩緩地增多。因此,比較例1的照明器具1X中,色溫為2200K之色度點係PX5
,但本實施形態的照明器具1中,可使色溫為2200K之色度點係P4
,可使色溫為2200K之色度點從PX5
往P4
移動。因此,可使照明器具1之照明光的色度為接近黑體軌跡之目標的色度。亦即,藉由第3發光部113,可使低色溫側的照明器具1(發光模組100)之照明光的色偏差(Duv)往負側偏移。藉此,可使低色溫側之照明光的色溫接近黑體軌跡。此一結果,可重現滿足黑體軌跡之全域的白色光。As described above, in the lighting fixture 1 of this embodiment, as shown by the solid line in FIG. 5, when the color temperature is controlled from a high color temperature to a low color temperature, the chromaticity points P 3 to P 5 are relatively moved to the third The amount of current flowing in the light emitting unit 113 gradually increases. Therefore, in the lighting fixture 1X of Comparative Example 1, the color temperature is 2200K and the chromaticity point is P X5 , but in the lighting fixture 1 of this embodiment, the color temperature can be set to 2200K and the chromaticity point is P 4 , and the color temperature can be 2200K. The chromaticity point moves from P X5 to P 4. Therefore, the chromaticity of the illumination light of the lighting fixture 1 can be made close to the target chromaticity of the blackbody locus. That is, the third light-emitting portion 113 can shift the color deviation (Duv) of the illumination light of the lighting fixture 1 (light-emitting module 100) on the low color temperature side to the negative side. In this way, the color temperature of the illumination light on the low color temperature side can be made close to the black body locus. As a result, the white light that satisfies the entire range of the black body locus can be reproduced.
此外,本實施形態的照明器具1中,藉由設置於發光模組100的電流控制電路120,以取決於從電源電路200往電流控制電路120供給之第2輸入電流IIN2
的電流量之電流輸出比,將第2輸入電流IIN2
往第2發光部112及第3發光部113分配供給。藉此,雖使用第1發光部111、第2發光部112、及第3發光部113此3個發光部110,即便可藉由電源電路200獨立控制的輸入電流之股數(輸出數)為較發光部110之個數更少的2股,仍能夠以追蹤黑體軌跡之方式改變照明光的色溫。亦即,作為電源電路200,可利用低成本而簡易構成之既存的雙電路控制電源,進行具備光色彼此不同之3個發光部110的發光模組100之調色控制。In addition, in the lighting fixture 1 of this embodiment, the current control circuit 120 provided in the light-emitting module 100 allows the current to depend on the current amount of the second input current I IN2 supplied from the power supply circuit 200 to the current control circuit 120 For the output ratio, the second input current I IN2 is distributed and supplied to the second light-emitting portion 112 and the third light-emitting portion 113. In this way, although the three light-emitting parts 110 of the first light-emitting part 111, the second light-emitting part 112, and the third light-emitting part 113 are used, the number of input currents (output number) that can be independently controlled by the power supply circuit 200 is The two strands that are fewer than the number of light-emitting parts 110 can still change the color temperature of the illumination light by tracking the black body trajectory. That is, as the power supply circuit 200, an existing two-circuit control power supply with a low-cost and simple structure can be used to perform color adjustment control of the light-emitting module 100 having three light-emitting parts 110 with different light colors.
因此,依本實施形態的照明器具1,則能夠利用低成本之電源電路200,以接近黑體軌跡的光色進行色彩重現。Therefore, according to the lighting fixture 1 of the present embodiment, the low-cost power supply circuit 200 can be used to perform color reproduction with a light color close to a black body locus.
另,本實施形態的照明器具1之調色控制中,僅於色度點為P3
至P4
之間使電流往發出紅色光的第3發光部113流通。此外,第3發光部113,在發光模組100的明亮度低之領域的情況發光,故可使構成第3發光部113的LED元件113a之個數為少量(本實施形態中為2個)。In addition, in the color adjustment control of the lighting fixture 1 of the present embodiment, only when the chromaticity points are P 3 to P 4 , current is passed to the third light-emitting portion 113 that emits red light. In addition, since the third light-emitting portion 113 emits light in a region where the brightness of the light-emitting module 100 is low, the number of LED elements 113a constituting the third light-emitting portion 113 can be reduced to a small number (two in this embodiment) .
(實施形態2) 接著,利用圖7,對實施形態2的照明器具1A予以說明。圖7為顯示實施形態2的照明器具1A之電路構成的圖。(Embodiment 2) Next, the lighting fixture 1A of Embodiment 2 will be described with reference to FIG. 7. Fig. 7 is a diagram showing the circuit configuration of the lighting fixture 1A according to the second embodiment.
本實施形態的照明器具1A與上述實施形態1的照明器具1,僅第3發光部與電流控制電路120之功能不同,此外皆相同。The lighting fixture 1A of this embodiment is different from the lighting fixture 1 of the above-mentioned first embodiment only in the functions of the third light-emitting part and the current control circuit 120, and otherwise they are the same.
具體而言,如圖7所示,本實施形態的照明器具1A之發光模組100A的發光部110A,係由以下3個發光部構成:第1發光部111,發出第1色溫之光線;第2發光部112,發出較第1色溫更低的色溫亦即第2色溫之光線;以及第3發光部113A,發出較第1色溫及第2色溫更高的色溫亦即第3色溫之光線。Specifically, as shown in FIG. 7, the light-emitting portion 110A of the light-emitting module 100A of the luminaire 1A of this embodiment is composed of the following three light-emitting portions: the first light-emitting portion 111 emits light of the first color temperature; 2 The light emitting part 112 emits light having a lower color temperature than the first color temperature, that is, the second color temperature; and the third light emitting part 113A emits light having a higher color temperature than the first color temperature and the second color temperature, that is, the third color temperature.
本實施形態中,第1發光部111及第2發光部112,與上述實施形態1相同。因此,第1發光部111,由發出色溫為6200K(第1色溫)之白色光的LED元件111a構成;第2發光部112,由發出色溫為2200K(第2色溫)的白色光LED元件112a構成。In this embodiment, the first light-emitting portion 111 and the second light-emitting portion 112 are the same as in the first embodiment described above. Therefore, the first light-emitting part 111 is composed of an LED element 111a that emits white light with a color temperature of 6200K (first color temperature); the second light-emitting part 112 is composed of a white light LED element 112a that emits a color temperature of 2200K (second color temperature). .
另一方面,第3發光部113A之構成,與上述實施形態1不同,第3發光部113A,發出色溫為8000K(第3色溫)的白色光。此外,第3發光部113A,由串聯連接的3個LED元件113aA(第3LED元件)構成。3個LED元件113aA,彼此的構成及特性(IF-VF特性等)全部相同。因此,3個LED元件113aA之光線的色溫為8000K。另,構成第3發光部113A的LED元件113aA之個數,並不限於3個,可為1個亦可為3個以外之複數個。On the other hand, the configuration of the third light-emitting portion 113A is different from that of the first embodiment described above. The third light-emitting portion 113A emits white light with a color temperature of 8000K (third color temperature). In addition, the third light-emitting portion 113A is composed of three LED elements 113aA (third LED elements) connected in series. The three LED elements 113aA have the same configuration and characteristics (IF-VF characteristics, etc.). Therefore, the color temperature of the light from the three LED elements 113aA is 8000K. In addition, the number of LED elements 113aA constituting the third light-emitting portion 113A is not limited to three, and may be one or plural other than three.
此外,上述實施形態1的電流控制電路120,將電流往與電流控制電路120連接的複數個發光部110分流時,使電流優先往與電流控制電路120連接的複數個發光部110中之順向電壓的總量小之發光部110流通,但本實施形態的電流控制電路120,將電流往與電流控制電路120連接的複數個發光部110分流時,使電流優先往與電流控制電路120連接的複數個發光部110中之順向電壓的總量大之發光部110流通。In addition, in the current control circuit 120 of the first embodiment described above, when the current is shunted to the plurality of light-emitting parts 110 connected to the current control circuit 120, the current is preferentially directed to the forward direction among the plurality of light-emitting parts 110 connected to the current control circuit 120. The light emitting unit 110 with a small total voltage flows, but the current control circuit 120 of this embodiment shunts the current to the plurality of light emitting units 110 connected to the current control circuit 120, and prioritizes the current to the one connected to the current control circuit 120 Among the plurality of light-emitting parts 110, the light-emitting part 110 with a large total forward voltage flows.
接著,利用圖8,對於本實施形態的照明器具1A之調色控制,與比較例2的照明器具之調色控制比較而予以說明。圖8為,顯示實施形態2的照明器具1A與比較例2的照明器具之調色控制所產生的照明光之光色變化的xy色度圖。Next, using FIG. 8, the color adjustment control of the lighting fixture 1A of the present embodiment will be described in comparison with the color adjustment control of the lighting fixture of Comparative Example 2. FIG. 8 is an xy chromaticity diagram showing the light color change of the illuminating light caused by the color adjustment control of the luminaire 1A of Embodiment 2 and the luminaire of Comparative Example 2. FIG.
比較例2的照明器具,如圖8的虛線所示,僅可在將色度點PY1
與色度點P4
(目標的色度)此兩點連結的直線上進行調色。因此,比較例2的照明器具中,在與圖8之曲線所示的黑體軌跡之間產生色偏,難以重現滿足黑體軌跡之全域的白色光。The lighting fixture of Comparative Example 2, as shown by the broken line in FIG. 8, can only be toned on a straight line connecting the two points of the chromaticity point P Y1 and the chromaticity point P 4 (target chromaticity). Therefore, in the lighting fixture of Comparative Example 2, a color shift occurs between the black body locus shown by the curve in FIG. 8 and it is difficult to reproduce white light that satisfies the entire range of the black body locus.
相對於此,於本實施形態的照明器具1A之發光模組100A,除了設置發出色溫為6200K之光線的第1發光部111、及發出色溫為2200K之光線的第2發光部112以外,亦設置發出色溫為8000K之光線的第3發光部113A。而後,從電源電路200對發光模組100A供給2股輸入電流,將其一方之電流(第1輸入電流)往第1發光部111供給,將另一方之電流(第2輸入電流)往電流控制電路120供給。進一步,電流控制電路120,依照該另一方之電流(第2輸入電流)的電流量,將該電流(第2輸入電流)往第2發光部112及第3發光部113A分配供給。In contrast, the light-emitting module 100A of the luminaire 1A of this embodiment is provided with a first light-emitting portion 111 that emits light with a color temperature of 6200K and a second light-emitting portion 112 that emits light with a color temperature of 2200K. The third light-emitting part 113A that emits light with a color temperature of 8000K. Then, two input currents are supplied to the light emitting module 100A from the power supply circuit 200, one of the currents (first input current) is supplied to the first light emitting section 111, and the other current (second input current) is supplied to the current control The circuit 120 is supplied. Furthermore, the current control circuit 120 distributes and supplies the current (the second input current) to the second light-emitting portion 112 and the third light-emitting portion 113A in accordance with the current amount of the other current (the second input current).
具體而言,如圖8的實線所示,在從色度點為P1
之高色溫至色度點為P4
之低色溫進行調色控制的情況,於其途中,藉由電流控制電路120使往第3發光部113A流通的電流量緩緩地增多。Specifically, as shown by the solid line in FIG. 8, when the color temperature is controlled from the high color temperature at the chromaticity point P 1 to the low color temperature at the chromaticity point P 4 , the current control circuit 120 gradually increases the amount of current flowing to the third light-emitting portion 113A.
因此,可使比較例2的照明器具中,對應於將色度點PY1
與色度點P4
此兩點連結的直線上之色度點PY3
的色溫,在本實施形態的照明器具1中,往色度點P3
移動。亦即,藉由第3發光部113A,可使對應於2200K與6200K間之中間色溫的照明器具1A(發光模組100A)之照明光的色偏差(Duv)往正側偏移。藉此,可使照明器具1A(發光模組100A)之照明光的色溫接近黑體軌跡。此一結果,可重現滿足黑體軌跡之全域的白色光。如此地,本實施形態中,對應於圖8的將色度點P1
、P2
、P3
、P4
之各點連結的直線,改變照明器具1A(發光模組100A)之照明光的光色。Therefore, in the lighting fixture of Comparative Example 2, the color temperature corresponding to the chromaticity point P Y3 on the straight line connecting the two points of the chromaticity point P Y1 and the chromaticity point P 4 can be obtained in the lighting fixture 1 of this embodiment. , the chromaticity point P 3 to move. That is, with the third light-emitting portion 113A, the color deviation (Duv) of the illuminating light of the lighting fixture 1A (light-emitting module 100A) corresponding to the intermediate color temperature between 2200K and 6200K can be shifted to the positive side. In this way, the color temperature of the illuminating light of the luminaire 1A (light-emitting module 100A) can be made close to the black body locus. As a result, the white light that satisfies the entire range of the black body locus can be reproduced. In this way, in this embodiment, corresponding to the straight line connecting the chromaticity points P 1 , P 2 , P 3 , and P 4 in FIG. 8, the light of the illuminating light of the luminaire 1A (light emitting module 100A) is changed. color.
此外,本實施形態的照明器具1A中,亦與上述實施形態1同樣地,藉由設置於發光模組100A的電流控制電路120,以取決於從電源電路200往電流控制電路120供給之第2輸入電流的電流量之電流輸出比,將第2輸入電流往第2發光部112及第3發光部113A分配供給。藉此,雖使用第1發光部111、第2發光部112、及第3發光部113A此3個發光部110A,即便可藉由電源電路200獨立控制的輸入電流之股數(輸出數)為較發光部110A之個數更少的2股,仍能夠以追蹤黑體軌跡之方式改變照明光的色溫。亦即,作為電源電路200,可利用低成本而簡易構成之既存的雙電路控制電源,進行具備光色彼此不同之3個發光部110A的發光模組100A之調色控制。In addition, in the lighting fixture 1A of this embodiment, as in the first embodiment described above, the current control circuit 120 provided in the light-emitting module 100A depends on the second power supply from the power supply circuit 200 to the current control circuit 120. The current output ratio of the current amount of the input current distributes and supplies the second input current to the second light-emitting portion 112 and the third light-emitting portion 113A. In this way, although the three light-emitting parts 110A, the first light-emitting part 111, the second light-emitting part 112, and the third light-emitting part 113A, are used, the number of input currents (output number) that can be independently controlled by the power supply circuit 200 is The two strands that are fewer than the number of light-emitting parts 110A can still change the color temperature of the illumination light by tracking the blackbody trajectory. That is, as the power supply circuit 200, an existing two-circuit control power supply with a low-cost and simple structure can be used to perform the color adjustment control of the light-emitting module 100A having three light-emitting parts 110A with different light colors.
因此,依本實施形態的照明器具1A,則能夠利用低成本之電源電路200,以接近黑體軌跡的光色進行色彩重現。Therefore, according to the lighting fixture 1A of the present embodiment, the low-cost power supply circuit 200 can be used to reproduce the color with a light color close to the black body locus.
(實施形態3) 接著,利用圖9,對實施形態3的照明器具1B予以說明。圖9為,顯示實施形態3的照明器具1B之電路構成的圖。(Embodiment 3) Next, the lighting fixture 1B of Embodiment 3 will be described using FIG. 9. Fig. 9 is a diagram showing the circuit configuration of the lighting fixture 1B according to the third embodiment.
本實施形態的照明器具1B與上述實施形態1的照明器具1,僅電流控制電路不同,此外基本上相同。The lighting fixture 1B of the present embodiment is different from the lighting fixture 1 of the above-mentioned first embodiment only in the current control circuit, and otherwise basically the same.
具體而言,如圖9所示,本實施形態的照明器具1B之發光模組100B的發光部110,與實施形態1同樣地,係由以下3個發光部構成:第1發光部111,發出第1色溫之光線;第2發光部112,發出較第1色溫更低的色溫亦即第2色溫之光線;以及第3發光部113,發出紅色光。另,雖使構成第3發光部113的LED元件113a之個數為3個,但並不限於3個,可為1個亦可為3個以外之複數個。Specifically, as shown in FIG. 9, the light-emitting unit 110 of the light-emitting module 100B of the luminaire 1B of this embodiment is composed of the following three light-emitting units, similarly to the first embodiment: the first light-emitting unit 111 emits light The light of the first color temperature; the second light-emitting portion 112, which emits light with a lower color temperature than the first color temperature, that is, the light of the second color temperature; and the third light-emitting portion 113, which emits red light. In addition, although the number of LED elements 113a constituting the third light-emitting portion 113 is three, it is not limited to three, and may be one or plural other than three.
此外,實施形態1中,電流控制電路120,將輸入電流往第2發光部112及第3發光部113分配供給,但本實施形態中,電流控制電路120B,將輸入電流往第1發光部111及第3發光部113分配。此一情況,電流控制電路120B,檢測從電源電路200往電流控制電路120B輸入的輸入電流之電流量(電流值)。而後,依照檢測到的電流量,決定用於往第1發光部111及第3發光部113分配的輸入電流之電流輸出比(分配比),電流控制電路120B,以依據此一電流輸出比的電流量,往第1發光部111與第3發光部113供給電流。In addition, in the first embodiment, the current control circuit 120 distributes the input current to the second light emitting section 112 and the third light emitting section 113, but in this embodiment, the current control circuit 120B transmits the input current to the first light emitting section 111 And the third light-emitting portion 113. In this case, the current control circuit 120B detects the current amount (current value) of the input current input from the power supply circuit 200 to the current control circuit 120B. Then, according to the detected current amount, the current output ratio (distribution ratio) of the input current used to distribute the first light-emitting part 111 and the third light-emitting part 113 is determined, and the current control circuit 120B is based on the current output ratio The amount of electric current supplies electric current to the first light-emitting part 111 and the third light-emitting part 113.
進一步,本實施形態的電流控制電路120B,與上述實施形態1的電流控制電路120不同,將電流往與電流控制電路120B連接的複數個發光部110分流時,使電流優先往與電流控制電路120B連接的複數個發光部110中之順向電壓的總量大之發光部110流通。Furthermore, the current control circuit 120B of this embodiment is different from the current control circuit 120 of the above-mentioned first embodiment in that when the current is shunted to the plurality of light-emitting parts 110 connected to the current control circuit 120B, the current is given priority to the current control circuit 120B. Among the plurality of connected light-emitting parts 110, the light-emitting part 110 with a large total forward voltage flows.
接著,利用圖10,對於本實施形態的照明器具1B之調色控制,與比較例3的照明器具之調色控制比較而予以說明。圖8為,顯示實施形態3的照明器具1B與比較例3的照明器具之調色控制所產生的照明光之光色變化的xy色度圖。Next, using FIG. 10, the color adjustment control of the lighting fixture 1B of the present embodiment will be described in comparison with the color adjustment control of the lighting fixture of Comparative Example 3. FIG. FIG. 8 is an xy chromaticity diagram showing the light color change of the illuminating light caused by the color adjustment control of the luminaire 1B of Embodiment 3 and the luminaire of Comparative Example 3. FIG.
比較例3的照明器具,如圖10的虛線所示,僅可在將色度點PZ1
與色度點P3
(目標的色度)此兩點連結的直線上進行調色。因此,比較例3的照明器具中,在與圖10之曲線所示的黑體軌跡之間產生色偏,難以重現滿足黑體軌跡之全域的白色光。The lighting fixture of Comparative Example 3, as shown by the broken line in FIG. 10, can only be toned on a straight line connecting the two points of the chromaticity point P Z1 and the chromaticity point P 3 (target chromaticity). Therefore, in the lighting fixture of Comparative Example 3, a color shift occurs between the black body locus shown by the curve in FIG. 10, and it is difficult to reproduce white light that satisfies the entire range of the black body locus.
相對於此,本實施形態的照明器具1B中,從電源電路200對發光模組100B供給2股輸入電流,將其一方之電流(第1輸入電流)往第2發光部112供給,將另一方之電流(第2輸入電流)往電流控制電路120B供給。進一步,電流控制電路120B,依照該另一方之電流(第2輸入電流)的電流量,將該電流(第2輸入電流)往第1發光部111及第3發光部113分配供給。In contrast, in the lighting fixture 1B of this embodiment, two input currents are supplied from the power supply circuit 200 to the light emitting module 100B, one of the currents (first input current) is supplied to the second light emitting section 112, and the other is supplied to the second light emitting unit 112. The current (the second input current) is supplied to the current control circuit 120B. Furthermore, the current control circuit 120B distributes and supplies the current (the second input current) to the first light-emitting part 111 and the third light-emitting part 113 in accordance with the current amount of the other current (the second input current).
具體而言,如圖10的實線所示,在從色度點為P3
之低色溫至色度點為P1
之高色溫進行調色控制的情況,於其途中,藉由電流控制電路120B使往第3發光部113流通的電流量緩緩地增多。Specifically, as shown by the solid line in FIG. 10, when the color temperature is controlled from the low color temperature at the chromaticity point P 3 to the high color temperature at the chromaticity point P 1 , on the way, the current control circuit 120B gradually increases the amount of current flowing to the third light-emitting part 113.
藉此,比較例3的照明器具中,色溫為6200K之色度點係PZ1
,但本實施形態的照明器具1B中,可使色溫為6200K之色度點為P1
,可使色溫為6200K之色度點從PZ1
往P1
移動。因此,可使照明器具1B之照明光的色度為接近黑體軌跡之目標的色度。亦即,藉由第3發光部113,可使高色溫側的照明器具1B(發光模組100B)之照明光的色偏差(Duv)往負側偏移。藉此,可使高色溫側之照明光的色溫接近黑體軌跡。此一結果,可重現滿足黑體軌跡之全域的白色光。如此地,本實施形態中,對應於圖10的將色度點P1
、P2
、P3
之各點連結的直線,改變照明器具1B(發光模組100B)之照明光的光色。Therefore, in the lighting fixture of Comparative Example 3, the color temperature is 6200K and the chromaticity point is P Z1 . However, in the lighting fixture 1B of this embodiment, the color temperature can be set to P 1 and the color temperature can be 6200K. The chromaticity point moves from P Z1 to P 1. Therefore, the chromaticity of the illumination light of the lighting fixture 1B can be made close to the target chromaticity of the blackbody locus. That is, the third light-emitting portion 113 can shift the color deviation (Duv) of the illumination light of the high-color-temperature lighting fixture 1B (light-emitting module 100B) to the negative side. Thereby, the color temperature of the illumination light on the high color temperature side can be made close to the black body locus. As a result, the white light that satisfies the entire range of the black body locus can be reproduced. In this way, in this embodiment, the light color of the illuminating light of the lighting fixture 1B (light emitting module 100B) is changed corresponding to the straight line connecting the chromaticity points P 1 , P 2 , and P 3 in FIG. 10.
此外,本實施形態的照明器具1B,亦與實施形態1同樣地,藉由設置於發光模組100B的電流控制電路120B,以取決於從電源電路200對於電流控制電路120B供給的輸入電流之電流量之電流輸出比,將該輸入電流對於第1發光部111及第3發光部113分配供給。藉此,雖使用第1發光部111、第2發光部112、及第3發光部113此3個發光部110,即便可藉由電源電路200獨立控制的輸入電流之股數(輸出數)為較發光部110之個數更少的2股,仍能夠以追蹤黑體軌跡之方式改變照明光的色溫。亦即,作為電源電路200,可利用低成本而簡易構成之既存的雙電路控制電源,進行具備光色彼此不同之3個發光部110的發光模組100之調色控制。In addition, the lighting fixture 1B of this embodiment is also the same as the first embodiment. The current control circuit 120B provided in the light-emitting module 100B depends on the current of the input current supplied from the power supply circuit 200 to the current control circuit 120B. The input current is divided and supplied to the first light-emitting part 111 and the third light-emitting part 113 according to the current output ratio of the quantity. In this way, although the three light-emitting parts 110 of the first light-emitting part 111, the second light-emitting part 112, and the third light-emitting part 113 are used, the number of input currents (output number) that can be independently controlled by the power supply circuit 200 is The two strands that are fewer than the number of light-emitting parts 110 can still change the color temperature of the illumination light by tracking the black body trajectory. That is, as the power supply circuit 200, an existing two-circuit control power supply with a low-cost and simple structure can be used to perform color adjustment control of the light-emitting module 100 having three light-emitting parts 110 with different light colors.
因此,依本實施形態的照明器具1B,則能夠利用低成本之電源電路200,以接近黑體軌跡的光色進行色彩重現。Therefore, according to the lighting fixture 1B of the present embodiment, the low-cost power supply circuit 200 can be used to reproduce the color with a light color close to the black body locus.
(變形例) 以上,雖依據實施形態對於本發明的照明器具進行說明,但本發明,並未限定於上述實施形態。(Modification) As mentioned above, although the lighting fixture of this invention was demonstrated based on embodiment, this invention is not limited to the said embodiment.
例如,上述實施形態1~3中,複數個發光部之調光控制,係藉由相位調光(二線式)施行,但調光控制方式,並不限於此一方式,亦可藉由PWM調光(四線式)或0-10VDC調光等施行複數個發光部之調光控制。For example, in the above-mentioned Embodiments 1 to 3, the dimming control of the plurality of light-emitting parts is performed by phase dimming (two-wire type), but the dimming control method is not limited to this method, and can also be performed by PWM Dimming (four-wire type) or 0-10VDC dimming, etc. implement the dimming control of multiple light-emitting parts.
此外,上述實施形態1中,雖使構成發光部110的LED元件為SMD型,使發光模組100為SMD類型,但並不限於此一形態。例如,亦可使用將LED晶片(裸晶片)直接安裝於基板上之COB(Chip On Board)類型的發光模組。例如,亦可如同圖11所示的發光模組101,使第1發光部111、第2發光部112、及第3發光部113,以安裝於基板130之複數片LED晶片及將此等LED晶片密封之密封構件構成。此一情況,第1發光部111及第2發光部112中,使用藍色LED晶片作為LED晶片,使用含有黃色螢光體等1種或複數種螢光體之螢光體含有樹脂作為密封構件。另一方面,第3發光部113中,使用紅色LED晶片作為LED晶片,使用不含螢光體之透明樹脂作為密封構件。另,實施形態2、3中,亦可應用COB類型的發光模組。In addition, in the first embodiment described above, although the LED elements constituting the light-emitting portion 110 are of the SMD type, and the light-emitting module 100 is of the SMD type, it is not limited to this form. For example, a COB (Chip On Board) type light emitting module in which the LED chip (bare chip) is directly mounted on the substrate can also be used. For example, like the light-emitting module 101 shown in FIG. 11, the first light-emitting portion 111, the second light-emitting portion 112, and the third light-emitting portion 113 may be mounted on a plurality of LED chips on the substrate 130 and these LEDs The chip seal is composed of a sealing member. In this case, in the first light-emitting part 111 and the second light-emitting part 112, a blue LED chip is used as the LED chip, and a phosphor containing resin containing one or more kinds of phosphors such as yellow phosphor is used as the sealing member . On the other hand, in the third light emitting section 113, a red LED chip is used as the LED chip, and a transparent resin containing no phosphor is used as a sealing member. In addition, in Embodiments 2 and 3, COB-type light-emitting modules can also be applied.
此外,上述實施形態1~3中,雖使設置於發光模組的發光部之個數為3個,但並不限於此一形態。例如,亦可於發光模組,設置3個以上的發光部。在此一情況,亦可藉由使從電源電路往發光模組供給的電力之輸出股數較發光部之個數更少,而達到相較於使用電力之輸出股數與發光部之個數相同的電源電路之情況,更為抑制電源電路的成本。In addition, although the number of light-emitting parts provided in the light-emitting module was three in the above-mentioned Embodiments 1 to 3, it is not limited to this form. For example, it is also possible to provide three or more light emitting parts in the light emitting module. In this case, the number of output strands of the power supplied from the power supply circuit to the light-emitting module can be made smaller than the number of light-emitting parts, so that the number of output strands and the number of light-emitting parts compared with the power used can be achieved. In the case of the same power supply circuit, the cost of the power supply circuit is further suppressed.
此外,上述實施形態1~3中,雖利用經由電線而與電源單元連接的調光開關4施行發光模組之調色控制,但並不限於此一形態。例如,亦可藉由先於電源單元內建無線模組,而從無線終端機往無線模組發送調光/調色訊號,藉以施行發光模組之調色控制。In addition, in the above-mentioned Embodiments 1 to 3, although the dimmer switch 4 connected to the power supply unit via a wire is used to perform the color adjustment control of the light emitting module, it is not limited to this form. For example, it is also possible to build a wireless module in the power supply unit first, and send a dimming/color adjustment signal from the wireless terminal to the wireless module, so as to implement the color control of the light-emitting module.
此外,上述實施形態1~3中,雖在調色控制時,施行使調色與調光連動之同步調色,但並不限於此一形態。例如,亦可施行不改變明亮度而僅改變光色之調色控制。In addition, in the above-mentioned Embodiments 1 to 3, although the gradation control is performed in conjunction with the synchronization of the grading and the dimming, it is not limited to this form. For example, it is also possible to perform toning control that does not change the brightness but only changes the light color.
此外,上述實施形態1~3中,雖例示下照燈,但本發明,亦可應用在聚光燈或基礎照明等其他照明器具。In addition, although the downlight is exemplified in the above-mentioned Embodiments 1 to 3, the present invention can also be applied to other lighting fixtures such as spotlights or basic lighting.
其他,對上述各實施形態施加所屬技術領域中具有通常知識者思及之各種變形而獲得的形態、在不脫離本發明之意旨的範圍將各實施形態之構成要素及功能任意組合藉以實現的形態,亦包含於本發明。In addition, the above-mentioned embodiments are obtained by applying various modifications that are considered by those skilled in the art, and are realized by arbitrarily combining the constituent elements and functions of the embodiments without departing from the scope of the present invention. , Also included in the present invention.