JP2008226473A - Illumination device - Google Patents

Illumination device Download PDF

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JP2008226473A
JP2008226473A JP2007058653A JP2007058653A JP2008226473A JP 2008226473 A JP2008226473 A JP 2008226473A JP 2007058653 A JP2007058653 A JP 2007058653A JP 2007058653 A JP2007058653 A JP 2007058653A JP 2008226473 A JP2008226473 A JP 2008226473A
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light emitting
lighting
control
period
emitting diode
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JP5009651B2 (en
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Jun Mizuno
純 水野
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Rohm Co Ltd
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Rohm Co Ltd
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Priority to JP2007058653A priority Critical patent/JP5009651B2/en
Priority to PCT/JP2008/054195 priority patent/WO2008108468A1/en
Priority to CN200880011887.7A priority patent/CN101658071B/en
Priority to US12/530,458 priority patent/US8410727B2/en
Publication of JP2008226473A publication Critical patent/JP2008226473A/en
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Priority to US13/784,183 priority patent/US8698425B2/en
Priority to US14/190,251 priority patent/US9000686B2/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an illumination device capable of adjusting chromaticity and luminance of illumination light in a wide range in a simple structure. <P>SOLUTION: The device includes a first and a second light-emitting diodes LED1, LED2 with different color temperatures, and a control circuit 6 carrying out lighting on/off control of the first and the second light-emitting diodes LED1, LED2. The control circuit 6 includes a lighting on/off control part 3 carrying out periodic lighting on/off control by pulse width modulation control of the first and the second light-emitting diodes LED1, LED2 so as to have a lighting period Ton for complementarily lighting on/off the first and the second light-emitting diodes LED1, LED2, and a lighting off period Toff for lighting off both of the first and the second light-emitting diodes LED1, LED2, and a pulse number modulation control part 7 carrying out lighting control of the first and the second light-emitting diodes LED1, LED2, by pulse number modulation control within a constant period. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、発光ダイオード(LED:Light Emitting Diode)を光源とする照明装置に関するものであり、特に、照明光の色度調整並びに輝度調整に関する。   The present invention relates to an illuminating device using a light emitting diode (LED) as a light source, and more particularly to chromaticity adjustment and luminance adjustment of illumination light.

従来例に係る照明装置の模式的ブロック構成を、図22に示す。特許文献1には、図22(特許文献1の図1に相当)に示したように、白色LED65に供給する電流のレベルを電流値制御回路62とLED駆動用電流源61で制御するとともに、白色LED65に供給する電流のオン時間とオフ時間との比率をスイッチ64、デューティ比制御回路66、および、パルス幅変調(PWM:Pulse Width Modulation)発生回路63で制御することにより、白色LED65の照明光の色度と輝度を調整することが可能な照明装置が開示されている。  FIG. 22 shows a schematic block configuration of a lighting device according to a conventional example. In Patent Document 1, as shown in FIG. 22 (corresponding to FIG. 1 of Patent Document 1), the current level supplied to the white LED 65 is controlled by the current value control circuit 62 and the LED drive current source 61, and The ratio of the on time and the off time of the current supplied to the white LED 65 is controlled by the switch 64, the duty ratio control circuit 66, and a pulse width modulation (PWM) generation circuit 63, thereby illuminating the white LED 65. An illumination device capable of adjusting the chromaticity and brightness of light is disclosed.

特許文献1の従来技術であれば、白色LED65の照明光の色度と輝度を調整することが可能である。しかしながら、特許文献1の従来技術は、あくまで、白色LED65の駆動電流を制御することで、照明光の色度を補正するものであり、その色度調整範囲については、特許文献1の図2(白色LEDの順電流−色度図特性の一例を示す図)で示されているように、必ずしも広いものではなかった(色度座標上で0.01〜0.02程度の調整範囲)。  If it is the prior art of patent document 1, it is possible to adjust the chromaticity and brightness | luminance of the illumination light of white LED65. However, the prior art of Patent Document 1 corrects the chromaticity of the illumination light by controlling the drive current of the white LED 65, and the chromaticity adjustment range is shown in FIG. As shown in the example of the forward current-chromaticity diagram characteristics of the white LED), the white LED is not necessarily wide (adjustment range of about 0.01 to 0.02 on the chromaticity coordinates).

また、特許文献1の従来技術では、白色LED65の照明光の色度と輝度(光度)を調整するために、白色LED65の駆動電流とオンデューティの双方を制御しなければならないので、その制御が複雑であった。   Moreover, in the prior art of patent document 1, in order to adjust the chromaticity and brightness | luminance (luminance) of the illumination light of white LED65, since both the drive current and on-duty of white LED65 must be controlled, the control is carried out. It was complicated.

また、特許文献2には、図4(特許文献2の図1に相当)に示したように、所定の色温度に設定された白色LEDと、これに対して特定の波長域にピーク波長を有する補正色LEDとから成り、白色LEDと補正色LEDとの混色割合により、白色LEDの設定色温度を調整可能に構成して成ることを特徴とするLED灯が開示されている。 Further, in Patent Document 2, as shown in FIG. 4 (corresponding to FIG. 1 of Patent Document 2), a white LED set to a predetermined color temperature, and a peak wavelength in a specific wavelength region in contrast thereto. There is disclosed an LED lamp comprising: a correction color LED having a white LED and a set color temperature of the white LED that can be adjusted by a mixing ratio of the white LED and the correction color LED.

なお、特許文献2の従来技術は、あくまで、照明光の色度調整のみを実現するものであって、照明光の輝度調整に関しては、何ら開示するものではなかった。
特開2002−324685号公報 再表2003−019072号公報
Note that the prior art of Patent Document 2 only realizes chromaticity adjustment of illumination light, and does not disclose anything about brightness adjustment of illumination light.
Japanese Patent Laid-Open No. 2002-324685 No. 2003-019072

本発明の目的は、上記の問題点に鑑み、簡易な構成で、照明光の色度と輝度を0〜100%の広範囲に調整することが可能な照明装置を提供することにある。   In view of the above problems, an object of the present invention is to provide an illumination device that can adjust the chromaticity and luminance of illumination light over a wide range of 0 to 100% with a simple configuration.

上記目的を達成するための本発明の請求項1に記載の照明装置は、互いに色温度の異なる第1発光部および第2発光部と、第1発光部および第2発光部の点消灯制御を行う制御回路とを備え、前記制御回路は、前記第1発光部と前記第2発光部を相補的に点消灯させる点灯期間と、前記第1発光部と前記第2発光部の両方を消灯させる消灯期間とを有するように、前記第1発光部および前記第2発光部の周期的な点消灯制御を行うと共に、一定周期内のパルス数変調制御により、前記第1発光部および前記第2発光部の点灯制御を行うことを特徴とする。  In order to achieve the above object, the lighting device according to claim 1 of the present invention performs first and second light emitting units having different color temperatures and on / off control of the first and second light emitting units. A control circuit that performs a lighting period in which the first light emitting unit and the second light emitting unit are turned on and off in a complementary manner, and turns off both the first light emitting unit and the second light emitting unit. Periodic on / off control of the first light emitting unit and the second light emitting unit is performed so as to have a light extinction period, and the first light emitting unit and the second light emitting unit are controlled by pulse number modulation control within a certain period. The lighting control of the part is performed.

本発明の請求項2に記載の照明装置は、請求項1記載の照明装置において、前記制御回路は、色度制御信号に応じて、前記点灯期間内における第1発光部の点灯期間と第2発光部の点灯期間との比率を可変制御すると共に、前記一定周期内のパルス数変調制御により、前記第1発光部および前記第2発光部の点灯制御を行うことを特徴とする。  The lighting device according to a second aspect of the present invention is the lighting device according to the first aspect, wherein the control circuit performs a lighting period and a second period of the first light emitting unit in the lighting period according to a chromaticity control signal. The ratio of the light emitting unit to the lighting period is variably controlled, and lighting control of the first light emitting unit and the second light emitting unit is performed by pulse number modulation control within the fixed period.

本発明の請求項3に記載の照明装置は、請求項1または2に記載の照明装置において、前記制御回路は、前記点灯期間の長さを一定に維持する一方、輝度制御信号に応じて、前記消灯期間の長さを可変制御すると共に、前記一定周期内のパルス数変調制御により、前記第1発光部および前記第2発光部の点灯制御を行うことを特徴とする。  The lighting device according to claim 3 of the present invention is the lighting device according to claim 1 or 2, wherein the control circuit maintains the length of the lighting period constant, while depending on the luminance control signal, The length of the extinguishing period is variably controlled, and lighting control of the first light emitting unit and the second light emitting unit is performed by pulse number modulation control within the fixed period.

本発明の請求項4に記載の照明装置は、請求項1または2に記載の照明装置において、前記制御回路は、輝度制御信号に応じて、所定の点消灯周期内における前記点灯期間と前記消灯期間との比率を可変制御すると共に、前記一定周期内のパルス数変調制御により、前記第1発光部および前記第2発光部の点灯制御を行うことを特徴とする。  The lighting device according to claim 4 of the present invention is the lighting device according to claim 1 or 2, wherein the control circuit is configured to turn on and off the lighting period within a predetermined lighting-off cycle according to a luminance control signal. The ratio with the period is variably controlled, and the lighting control of the first light emitting unit and the second light emitting unit is performed by the pulse number modulation control within the fixed period.

本発明の請求項5に記載の照明装置は、請求項1乃至4のいずれかに記載の照明装置において、前記第1発光部および前記第2発光部は、青色光を発する青色発光ダイオードと、前記青色発光ダイオードを被覆する蛍光層とをそれぞれ備え、前記蛍光層は、前記青色光に励起されて赤色光、緑色光を各々発する赤色蛍光体と緑色蛍光体、若しくは、前記青色光に励起されて黄色光を発する黄色蛍光体を均一に混合した透明樹脂を有することを特徴とする。  The lighting device according to claim 5 of the present invention is the lighting device according to any one of claims 1 to 4, wherein the first light emitting unit and the second light emitting unit are blue light emitting diodes that emit blue light, A fluorescent layer that covers the blue light emitting diode, and the fluorescent layer is excited by the blue light to emit red light and green light, and red and green phosphors, or excited by the blue light. And a transparent resin in which a yellow phosphor emitting yellow light is uniformly mixed.

本発明の請求項6に記載の照明装置は、互いに色温度の異なる第1発光部および第2発光部と、第1発光部および第2発光部の点消灯制御を行う制御回路とを備え、前記制御回路は、前記第1発光部と前記第2発光部を相補的に点消灯させる点灯期間と、前記第1発光部と前記第2発光部の両方を消灯させる消灯期間とを有するように、前記第1発光部および前記第2発光部の周期的な点消灯制御を行う点消灯制御部と、一定周期内のパルス数変調制御により、前記第1発光部および前記第2発光部の点灯制御を行うパルス数変調制御部を備えることを特徴とする。  The illumination device according to claim 6 of the present invention includes a first light emitting unit and a second light emitting unit having different color temperatures, and a control circuit for performing on / off control of the first light emitting unit and the second light emitting unit, The control circuit has a lighting period in which the first light emitting unit and the second light emitting unit are turned on and off in a complementary manner, and a lighting period in which both the first light emitting unit and the second light emitting unit are turned off. The on / off control unit that performs periodic on / off control of the first light emitting unit and the second light emitting unit, and the lighting of the first light emitting unit and the second light emitting unit by pulse number modulation control within a certain period A pulse number modulation control unit for performing control is provided.

本発明の請求項7に記載の照明装置は、請求項6記載の照明装置において、前記点消灯制御部は、更に、色度制御信号に応じて、前記点灯期間内における第1発光部の点灯期間と第2発光部の点灯期間との比率を可変制御すると共に、前記パルス数変調制御部も、更に、前記色度制御信号に応じて、一定周期内のパルス数変調制御により、前記第1発光部および前記第2発光部の点灯制御を行うことを特徴とする。  The lighting device according to claim 7 of the present invention is the lighting device according to claim 6, wherein the lighting control unit further turns on the first light emitting unit within the lighting period according to a chromaticity control signal. In addition to variably controlling the ratio between the period and the lighting period of the second light emitting unit, the pulse number modulation control unit further controls the first number by performing pulse number modulation control within a fixed period according to the chromaticity control signal. Lighting control of the light emitting unit and the second light emitting unit is performed.

本発明の請求項8に記載の照明装置は、請求項6または7に記載の照明装置において、前記点消灯制御部は、更に、前記点灯期間の長さを一定に維持する一方、輝度制御信号に応じて、前記消灯期間の長さを可変制御すると共に、前記パルス数変調制御部も、更に、前記輝度制御信号に応じて、一定周期内のパルス数変調制御により、前記第1発光部および前記第2発光部の点灯制御を行うことを特徴とする。  The lighting device according to an eighth aspect of the present invention is the lighting device according to the sixth or seventh aspect, wherein the lighting control unit further maintains the length of the lighting period constant, while the luminance control signal. The length of the extinguishing period is variably controlled according to the pulse number modulation control unit, and the first light emitting unit and the pulse number modulation control unit are further controlled by pulse number modulation control within a certain period according to the luminance control signal. The lighting control of the second light emitting unit is performed.

本発明の請求項9に記載の照明装置は、請求項6または7に記載の照明装置において、前記点消灯制御部は、更に、輝度制御信号に応じて、所定の点消灯周期内における前記点灯期間と前記消灯期間との比率を可変制御すると共に、前記パルス数変調制御部も、更に、前記輝度制御信号に応じて、一定周期内のパルス数変調制御により、前記第1発光部および前記第2発光部の点灯制御を行うことを特徴とする。  The lighting device according to a ninth aspect of the present invention is the lighting device according to the sixth or seventh aspect, wherein the lighting control unit further turns on the lighting device within a predetermined lighting cycle according to a luminance control signal. In addition to variably controlling the ratio between the period and the extinguishing period, the pulse number modulation control unit further controls the first light emitting unit and the first light emitting unit by performing pulse number modulation control within a certain period according to the luminance control signal. The lighting control of the two light emitting units is performed.

本発明の請求項10に記載の照明装置は、請求項6乃至9のいずれかに記載の照明装置において、前記第1発光部および前記第2発光部は、青色光を発する青色発光ダイオードと、前記青色発光ダイオードを被覆する蛍光層とをそれぞれ備え、前記蛍光層は、前記青色光に励起されて赤色光、緑色光を各々発する赤色蛍光体と緑色蛍光体、若しくは、前記青色光に励起されて黄色光を発する黄色蛍光体を均一に混合した透明樹脂を有することを特徴とする。  The illumination device according to claim 10 of the present invention is the illumination device according to any one of claims 6 to 9, wherein the first light emitting unit and the second light emitting unit are blue light emitting diodes that emit blue light, A fluorescent layer that covers the blue light emitting diode, and the fluorescent layer is excited by the blue light to emit red light and green light, and red and green phosphors, or excited by the blue light. And a transparent resin in which a yellow phosphor emitting yellow light is uniformly mixed.

本発明の請求項11に記載の照明装置は、互いに色温度の異なる第1発光ダイオードおよび第2発光ダイオードと、第1発光ダイオードおよび第2発光ダイオードの点消灯制御を行う制御回路とを備え、前記制御回路は、前記第1発光ダイオードと前記第2発光ダイオードを相補的に点消灯させる点灯期間と、前記第1発光ダイオードと前記第2発光ダイオードの両方を消灯させる消灯期間とを有するように、前記第1発光ダイオードおよび前記第2発光ダイオードの周期的な点消灯制御を行う点消灯制御部と、一定周期内のパルス数変調制御により、前記第1発光ダイオードおよび前記第2発光ダイオードの点灯制御を行うパルス数変調制御部とを備えることを特徴とする。  An illumination device according to an eleventh aspect of the present invention includes a first light emitting diode and a second light emitting diode having different color temperatures, and a control circuit that controls turning on / off of the first light emitting diode and the second light emitting diode, The control circuit has a lighting period in which the first light emitting diode and the second light emitting diode are complementarily turned on and off, and a lighting period in which both the first light emitting diode and the second light emitting diode are turned off. The on / off control unit that performs periodic on / off control of the first light emitting diode and the second light emitting diode, and the lighting of the first light emitting diode and the second light emitting diode by pulse number modulation control within a certain period And a pulse number modulation control unit for performing control.

本発明の請求項12に記載の照明装置は、請求項11に記載の照明装置において、前記点消灯制御部は、更に、色度制御信号に応じて、前記点灯期間内における第1発光ダイオード部の点灯期間と第2発光部の点灯期間との比率を可変制御すると共に、前記パルス数変調制御部も、更に、前記色度制御信号に応じて、一定周期内のパルス数変調制御により、前記第1発光ダイオードおよび前記第2発光ダイオードの点灯制御を行うことを特徴とする。  The lighting device according to a twelfth aspect of the present invention is the lighting device according to the eleventh aspect, wherein the lighting control unit further includes a first light emitting diode unit in the lighting period according to a chromaticity control signal. Variably controlling the ratio of the lighting period of the second light emitting unit and the lighting period of the second light emitting unit, and the pulse number modulation control unit is further controlled by the pulse number modulation control within a predetermined period according to the chromaticity control signal, Lighting control of the first light emitting diode and the second light emitting diode is performed.

本発明の請求項13に記載の照明装置は、請求項11または12に記載の照明装置において、 前記点消灯制御部は、更に、前記点灯期間の長さを一定に維持する一方、輝度制御信号に応じて、前記消灯期間の長さを可変制御すると共に、前記パルス数変調制御部も、更に、前記輝度制御信号に応じて、一定周期内のパルス数変調制御により、前記第1発光ダイオードおよび前記第2発光ダイオードの点灯制御を行うことを特徴とする。  The lighting device according to claim 13 of the present invention is the lighting device according to claim 11 or 12, wherein the lighting control unit further maintains the length of the lighting period constant while the brightness control signal In response to variably controlling the length of the extinguishing period, the pulse number modulation control unit further controls the first light emitting diode and the first light emitting diode by pulse number modulation control within a certain period according to the luminance control signal. The lighting control of the second light emitting diode is performed.

本発明の請求項14に記載の照明装置は、請求項11または12に記載の照明装置において、前記点消灯制御部は、更に、輝度制御信号に応じて、所定の点消灯周期内における前記点灯期間と前記消灯期間との比率を可変制御すると共に、前記パルス数変調制御部も、更に、前記輝度制御信号に応じて、一定周期内のパルス数変調制御により、前記第1発光ダイオードおよび前記第2発光ダイオードの点灯制御を行うことを特徴とする。  The lighting device according to a fourteenth aspect of the present invention is the lighting device according to the eleventh or twelfth aspect, wherein the lighting / lighting-out control unit further performs the lighting in a predetermined lighting / lighting-out cycle according to a luminance control signal. In addition to variably controlling the ratio between the period and the extinguishing period, the pulse number modulation control unit further controls the first light emitting diode and the first light emitting diode by pulse number modulation control within a certain period according to the luminance control signal. It is characterized in that lighting control of two light emitting diodes is performed.

本発明の請求項15に記載の照明装置は、請求項11乃至14のいずれかに記載の照明装置において、前記第1発光ダイオードおよび前記第2発光ダイオードは、青色光を発する青色発光ダイオードと、前記青色発光ダイオードを被覆する蛍光層とをそれぞれ備え、前記蛍光層は、前記青色光に励起されて赤色光、緑色光を各々発する赤色蛍光体と緑色蛍光体、若しくは、前記青色光に励起されて黄色光を発する黄色蛍光体を均一に混合した透明樹脂を有することを特徴とする。  The illuminating device according to claim 15 of the present invention is the illuminating device according to any one of claims 11 to 14, wherein the first light emitting diode and the second light emitting diode are blue light emitting diodes that emit blue light; A fluorescent layer that covers the blue light emitting diode, and the fluorescent layer is excited by the blue light to emit red light and green light, and red and green phosphors, or excited by the blue light. And a transparent resin in which a yellow phosphor emitting yellow light is uniformly mixed.

本発明の請求項16に記載の照明装置は、請求項11乃至15のいずれかに記載の照明装置において、前記第1発光ダイオードおよび前記第2発光ダイオードは、互いに隣接して配置したことを特徴とする。  The illuminating device according to claim 16 of the present invention is the illuminating device according to any one of claims 11 to 15, wherein the first light emitting diode and the second light emitting diode are arranged adjacent to each other. And

本発明の請求項17に記載の照明装置は、請求項11乃至15のいずれかに記載の照明装置において、前記第1発光ダイオードおよび前記第2発光ダイオードは、互いに隣接して配置し、かつ複数組配列して実装することを特徴とする。  The illuminating device according to claim 17 of the present invention is the illuminating device according to any one of claims 11 to 15, wherein the first light emitting diode and the second light emitting diode are arranged adjacent to each other, and a plurality of the light emitting diodes are arranged. It is characterized by being assembled and arranged.

本発明の請求項18に記載の照明装置は、請求項11乃至15のいずれかに記載の照明装置において、前記第1発光ダイオードおよび前記第2発光ダイオードは、互いに隣接して配置し、かつ複数組ライン状に配列して実装することを特徴とする。  An illuminating device according to an eighteenth aspect of the present invention is the illuminating device according to any one of the eleventh to fifteenth aspects, wherein the first light emitting diode and the second light emitting diode are arranged adjacent to each other, and a plurality of the light emitting diodes are arranged. It is characterized by being arranged in a set line.

本発明の請求項19に記載の照明装置は、請求項11乃至15のいずれかに記載の照明装置において、前記第1発光ダイオードおよび前記第2発光ダイオードは、互いに隣接して配置し、かつ複数組円形状に配列して実装することを特徴とする。  The lighting device according to claim 19 of the present invention is the lighting device according to any of claims 11 to 15, wherein the first light emitting diode and the second light emitting diode are arranged adjacent to each other, It is characterized by being mounted in an assembled circle shape.

本発明の請求項20に記載の照明装置は、請求項11乃至19のいずれかに記載の照明装置において、前記第1発光ダイオードの色温度は、2500K〜3000K、前記第2発光ダイオードの色温度は、3000K〜6500Kの範囲に含まれることを特徴とする。  The lighting device according to claim 20 of the present invention is the lighting device according to any one of claims 11 to 19, wherein the color temperature of the first light emitting diode is 2500K to 3000K, and the color temperature of the second light emitting diode. Is included in the range of 3000K to 6500K.

本発明に係る照明装置によれば、簡易な構成で、照明光の色度と輝度を0〜100%の広範囲に調整することができる。   According to the illumination device of the present invention, the chromaticity and luminance of illumination light can be adjusted over a wide range of 0 to 100% with a simple configuration.

次に、図面を参照して、本発明の実施の形態を説明する。以下の図面の記載において、同一または類似の部分には同一または類似の符号を付している。ただし、図面は模式的なものであり、現実のものとは異なることに留意すべきである。また、図面相互間においても互いの寸法の関係や比率が異なる部分が含まれていることはもちろんである。   Next, embodiments of the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and different from the actual ones. Moreover, it is a matter of course that portions having different dimensional relationships and ratios are included between the drawings.

また、以下に示す実施の形態は、この発明の技術的思想を具体化するための装置や方法を例示するものであって、この発明の技術的思想は、各構成部品の配置などを下記のものに特定するものでない。この発明の技術的思想は、特許請求の範囲において、種々の変更を加えることができる。  Further, the embodiment described below exemplifies an apparatus and a method for embodying the technical idea of the present invention. The technical idea of the present invention is the arrangement of each component as described below. It is not something specific. The technical idea of the present invention can be variously modified within the scope of the claims.

[第1の実施の形態]
図1は、本発明の第1の実施の形態に係る照明装置の模式的基本回路ブロック構成を示す。
[First embodiment]
FIG. 1 shows a schematic basic circuit block configuration of a lighting apparatus according to a first embodiment of the present invention.

本発明の第1の実施の形態に係る照明装置は、図1に示すように、互いに色温度の異なる第1発光部9および第2発光部10と、第1発光部9および第2発光部10の点消灯制御を行う制御回路6とを備える。  As shown in FIG. 1, the lighting device according to the first embodiment of the present invention includes a first light emitting unit 9 and a second light emitting unit 10 having different color temperatures, and a first light emitting unit 9 and a second light emitting unit. And a control circuit 6 that performs 10 on / off control.

制御回路6は、第1発光部9と第2発光部10を相補的に点消灯させる点灯期間Tonと、第1発光部9と第2発光部10の両方を消灯させる消灯期間Toffとを有するように、第1発光部9および第2発光部10の周期的な点消灯制御を行うと共に、一定周期TN内のパルス数変調(PNM:Pulse Number Modulation)制御により、第1発光部9および第2発光部10の点灯制御を行うことを特徴とする。PNMは、パルス密度変調(PDM:Pulse Density Modulation)とも呼ばれるが、ここでは、PNMに表記を統一する。  The control circuit 6 includes a lighting period Ton for turning on and off the first light emitting unit 9 and the second light emitting unit 10 in a complementary manner, and a lighting off period Toff for turning off both the first light emitting unit 9 and the second light emitting unit 10. As described above, the first light emitting unit 9 and the second light emitting unit 10 are periodically turned on and off, and the first light emitting unit 9 and the second light emitting unit 9 are controlled by pulse number modulation (PNM) control within a fixed period TN. The second light emitting unit 10 is controlled to be turned on. The PNM is also called pulse density modulation (PDM), but here, the notation is unified with the PNM.

また、制御回路6には、色度制御信号STと、輝度制御信号SIが供給され、制御回路6からは、スイッチング制御信号S1、S2が、それぞれLED駆動用バイポーラトランジスタQ1、Q2のベースに供給されている。また、LED1、LED2には、それぞれ抵抗R1、R2が直列に接続され、一定電流が供給されるようになされている。  The control circuit 6 is supplied with a chromaticity control signal ST and a luminance control signal SI, and the control circuit 6 supplies switching control signals S1 and S2 to the bases of the LED driving bipolar transistors Q1 and Q2, respectively. Has been. Also, resistors R1 and R2 are connected in series to LED1 and LED2, respectively, so that a constant current is supplied.

第1発光部9を構成するLED1および第2発光部10を構成するLED2としては、例えば、互いに色温度の異なる2種類の白色発光ダイオードが用いられている。  As LED1 which comprises the 1st light emission part 9, and LED2 which comprises the 2nd light emission part 10, two types of white light emitting diodes from which color temperature differs mutually are used, for example.

本発明の第1の実施の形態に係る照明装置においては、第1発光部9を構成するLED1として、例えば、5000Kの色温度を有する白色発光ダイオードを用い、また、第2発光部10を構成するLED2として、例えば、2600Kの色温度を有する白色発光ダイオードを用いている。  In the lighting device according to the first embodiment of the present invention, for example, a white light emitting diode having a color temperature of 5000 K is used as the LED 1 constituting the first light emitting unit 9, and the second light emitting unit 10 is constructed. As the LED 2 to be used, for example, a white light emitting diode having a color temperature of 2600K is used.

ただし、上記の色温度は例示であって、照明光の色温度(色度)を広範囲に調整するためには、できる限り色温度の離れた2種類の白色発光ダイオードを用いることが望ましい。  However, the above color temperature is merely an example, and in order to adjust the color temperature (chromaticity) of the illumination light over a wide range, it is desirable to use two types of white light emitting diodes having a color temperature as far as possible.

本発明の第1の実施の形態に係る照明装置においては、LED1の色温度は、例えば、2500K〜3000K、LED2の色温度は、例えば、3000K〜6500Kの範囲であってもよい。  In the lighting device according to the first embodiment of the present invention, the color temperature of the LED 1 may be, for example, 2500 K to 3000 K, and the color temperature of the LED 2 may be, for example, 3000 K to 6500 K.

LED駆動用バイポーラトランジスタQ1、Q2のコレクタは、いずれも電源電圧Vccを有する電源ラインに接続されている。LED駆動用バイポーラトランジスタQ1のエミッタは、LED1のアノードに接続されている。LED駆動用バイポーラトランジスタQ2のエミッタは、LED2のアノードに接続されている。LED1のカソードは、抵抗R1を介して接地ラインに接続されている。LED2のカソードは、抵抗R2を介して接地ラインに接続されている。   The collectors of the LED driving bipolar transistors Q1 and Q2 are both connected to a power supply line having a power supply voltage Vcc. The emitter of the LED driving bipolar transistor Q1 is connected to the anode of the LED1. The emitter of the LED driving bipolar transistor Q2 is connected to the anode of the LED2. The cathode of LED1 is connected to the ground line via a resistor R1. The cathode of the LED 2 is connected to the ground line via the resistor R2.

制御回路6は、色度制御信号STと輝度制御信号SIに基いて、LED駆動用バイポーラトランジスタQ1、Q2のベースに供給するスイッチング制御信号S1、S2を生成することにより、第1発光部9を構成するLED1および第2発光部10を構成するLED2の点消灯制御を行う手段である。   Based on the chromaticity control signal ST and the luminance control signal SI, the control circuit 6 generates the switching control signals S1 and S2 to be supplied to the bases of the LED driving bipolar transistors Q1 and Q2, thereby causing the first light emitting unit 9 to be generated. This is means for controlling turning on / off the LED 1 constituting the LED 2 and the LED 2 constituting the second light emitting unit 10.

より具体的に述べると、LED1の点灯時には、スイッチング制御信号S1がハイレベルとされ、LED駆動用バイポーラトランジスタQ1がオンされる。このような制御によって、LED1に対する駆動電流の供給が許可され、LED1が点灯される。逆に、LED1の消灯時には、スイッチング制御信号S1がローレベルとされ、LED駆動用バイポーラトランジスタQ1がオフされる。このような制御によって、LED1に対する駆動電流の供給が遮断され、LED1が消灯される。   More specifically, when the LED 1 is turned on, the switching control signal S1 is set to the high level, and the LED driving bipolar transistor Q1 is turned on. By such control, supply of drive current to the LED 1 is permitted, and the LED 1 is turned on. Conversely, when the LED 1 is turned off, the switching control signal S1 is set to the low level, and the LED driving bipolar transistor Q1 is turned off. By such control, the supply of drive current to the LED 1 is interrupted, and the LED 1 is turned off.

同様に、LED2の点灯時には、スイッチング制御信号S2がハイレベルとされ、LED駆動用バイポーラトランジスタQ2がオンされる。このような制御によって、LED2に対する駆動電流の供給が許可され、LED2が点灯される。逆に、LED2の消灯時には、スイッチング制御信号S2がローレベルとされ、LED駆動用バイポーラトランジスタQ2がオフされる。このような制御によって、LED2に対する駆動電流の供給が遮断され、LED2が消灯される。   Similarly, when the LED 2 is lit, the switching control signal S2 is set to the high level, and the LED driving bipolar transistor Q2 is turned on. By such control, supply of drive current to the LED 2 is permitted, and the LED 2 is turned on. Conversely, when the LED 2 is turned off, the switching control signal S2 is set to the low level, and the LED driving bipolar transistor Q2 is turned off. By such control, the supply of drive current to the LED 2 is cut off, and the LED 2 is turned off.

次に、第1発光部9を構成するLED1および第2発光部10を構成するLED2の構造について、図2を参照しながら詳細に説明する。図2は、第1発光部9を構成するLED1の構造を模式的に示す縦断面図である。なお、第2発光部10を構成するLED2の構造も同様であるため、重複した説明は行わない。   Next, the structure of LED1 which comprises the 1st light emission part 9, and LED2 which comprises the 2nd light emission part 10 is demonstrated in detail, referring FIG. FIG. 2 is a longitudinal sectional view schematically showing the structure of the LED 1 constituting the first light emitting unit 9. In addition, since the structure of LED2 which comprises the 2nd light emission part 10 is also the same, the overlapping description is not performed.

本発明の第1の実施の形態に係る照明装置においては、図2に示すように、第1発光部9および第2発光部10は、青色光を発する青色発光ダイオード1と、青色発光ダイオード1を被覆する蛍光層2とをそれぞれ備え、蛍光層2は、青色光に励起されて赤色光、緑色光を各々発する赤色蛍光体2aと緑色蛍光体2b、若しくは、青色光に励起されて黄色光を発する黄色蛍光体を均一に混合した透明樹脂2を有することを特徴とする。  In the illumination device according to the first embodiment of the present invention, as shown in FIG. 2, the first light emitting unit 9 and the second light emitting unit 10 include a blue light emitting diode 1 that emits blue light and a blue light emitting diode 1. The fluorescent layer 2 is coated with a red phosphor 2a and a green phosphor 2b that emit red light and green light by being excited by blue light, respectively, or yellow light that is excited by blue light. It has the transparent resin 2 which mixed the yellow fluorescent substance which emits uniformly.

図2に示すように、LED1は、青色光を発する青色発光ダイオード1と、青色発光ダイオード1を被覆する蛍光層2とを各々有して成る。また、蛍光層2は、青色光に励起されて赤色光を発する赤色蛍光体2aと、青色光に励起されて緑色光を発する緑色蛍光体2bとを透明樹脂2cに均一に混合して成る。   As shown in FIG. 2, the LED 1 includes a blue light emitting diode 1 that emits blue light and a fluorescent layer 2 that covers the blue light emitting diode 1. The fluorescent layer 2 is formed by uniformly mixing a red phosphor 2a that emits red light when excited with blue light and a green phosphor 2b that emits green light when excited with blue light into a transparent resin 2c.

上記構成から成るLED1では、赤色蛍光体2aが発する赤色光と、緑色蛍光体2bが発する緑色光と、両蛍光体に吸収されなかった一部の青色光とを混合することにより、演色性の高い白色光を生成することが可能である。   In LED1 which consists of the said structure, color rendering property is mixed by mixing the red light which the red fluorescent substance 2a emits, the green light which the green fluorescent substance 2b emits, and a part of blue light which was not absorbed by both fluorescent substance. It is possible to generate high white light.

なお、演色性の向上よりも発光効率の向上を優先する場合、蛍光層2は、青色光に励起されて黄色光を発する黄色蛍光体を透明樹脂に均一に混合して成る構成とすればよい。   When priority is given to improving luminous efficiency over improving color rendering, the fluorescent layer 2 may be configured by uniformly mixing a yellow phosphor that emits yellow light when excited by blue light into a transparent resin. .

図3は、国際照明委員会(CIE:Commission Internationale de L‘Eclairage)1931によるXYZ表色系のXY色度図を示す。また、図4は、XY色度図上において、LEDの選定方法を説明する模式図であって、特許文献2の図1に相当する図であるが、前述の通り、色温度の異なる発光ダイオードを選定する際に、参照することができる。  FIG. 3 shows an XY chromaticity diagram of the XYZ color system by the International Commission on Illumination (CIE) 1931. FIG. 4 is a schematic diagram for explaining an LED selection method on the XY chromaticity diagram, and corresponds to FIG. 1 of Patent Document 2, but as described above, the light emitting diodes having different color temperatures. Can be referred to when selecting.

図5は、白色LEDにおいて、相対光度と順方向電流IF(mA)の関係の特性の一例を示す。 FIG. 5 shows an example of the characteristics of the relationship between the relative luminous intensity and the forward current I F (mA) in the white LED.

図6は、白色LEDにおいて、色度図と順方向電流IF(mA)の関係の特性の一例を示す。 FIG. 6 shows an example of the relationship between the chromaticity diagram and the forward current I F (mA) in the white LED.

なお、これらの図は、白色LEDであるNSCW100(日亜化学工業株式会社)の特性の一例である。   In addition, these figures are an example of the characteristic of NSCW100 (Nichia Corporation) which is a white LED.

図5および図6に示すように、白色LEDの相対光度、および色度は、室温(25℃)の環境下で、順方向電流IFの値の変化に応じて変化する。 As shown in FIGS. 5 and 6, the relative luminous intensity and chromaticity of the white LED is in an environment of room temperature (25 ° C.), changes according to a change in the value of the forward current I F.

図7(a)は、本発明の第1の実施の形態に係る照明装置において、LEDモジュール11に対する制御系の模式的回路ブロック構成を示し、図7(b)は、制御回路6の模式的ブロック構成を示す。  FIG. 7A shows a schematic circuit block configuration of a control system for the LED module 11 in the lighting apparatus according to the first embodiment of the present invention, and FIG. 7B is a schematic diagram of the control circuit 6. A block configuration is shown.

更に具体的に、本発明の第1の実施の形態に係る照明装置は、図7(a)に示すように、互いに色温度の異なる第1発光部9および第2発光部10と、第1発光部9および第2発光部10の点消灯制御を行う制御回路6とを備える。  More specifically, the lighting device according to the first embodiment of the present invention includes a first light emitting unit 9 and a second light emitting unit 10 having different color temperatures, as shown in FIG. And a control circuit 6 that controls turning on / off of the light emitting unit 9 and the second light emitting unit 10.

制御回路6は、図7(b)に示すように、第1発光部9と第2発光部10を相補的に点消灯させる点灯期間Tonと、第1発光部9と第2発光部10の両方を消灯させる消灯期間Toffとを有するように、第1発光部9および第2発光部10の周期的な点消灯制御を行うパルス幅変調制御による点消灯制御部3と、一定周期TN内のPNM制御により、第1発光部9および第2発光部10の点灯制御を行うPNM制御部7とを備えることを特徴とする。  As illustrated in FIG. 7B, the control circuit 6 includes a lighting period Ton for turning on and off the first light emitting unit 9 and the second light emitting unit 10 in a complementary manner, and the first light emitting unit 9 and the second light emitting unit 10. A lighting / extinguishing control unit 3 based on pulse width modulation control for performing periodic on / off control of the first light emitting unit 9 and the second light emitting unit 10 so as to have both extinguishing periods Toff for turning off both, and within a certain period TN A PNM control unit 7 that performs lighting control of the first light emitting unit 9 and the second light emitting unit 10 by PNM control is provided.

また、本発明の第1の実施の形態に係る照明装置においては、図15に示すように、点消灯制御部3は、更に、色度制御信号STに応じて、点灯期間Ton内における第1発光部9の点灯期間T1と第2発光部10の点灯期間T2との比率を可変制御すると共に、PNM制御部7も、更に、前記色度制御信号STに応じて、一定周期TN内のPNM制御により、第1発光部9および第2発光部10の点灯制御を行うことを特徴とする。  Moreover, in the illuminating device which concerns on the 1st Embodiment of this invention, as shown in FIG. 15, the lighting-on / off control part 3 is further 1st in the lighting period Ton according to chromaticity control signal ST. While the ratio of the lighting period T1 of the light emitting unit 9 and the lighting period T2 of the second light emitting unit 10 is variably controlled, the PNM control unit 7 further controls the PNM within a fixed period TN according to the chromaticity control signal ST. The lighting control of the first light emitting unit 9 and the second light emitting unit 10 is performed by the control.

更に具体的に、本発明の第1の実施の形態に係る照明装置は、図7(a)に示すように、互いに色温度の異なる第1発光ダイオードLED1および第2発光ダイオードLED2と、第1発光ダイオードLED1および第2発光ダイオードLED2の点消灯制御を行う制御回路6とを備える。  More specifically, as shown in FIG. 7A, the lighting device according to the first embodiment of the present invention includes a first light emitting diode LED1 and a second light emitting diode LED2 having different color temperatures, And a control circuit 6 that controls turning on / off of the light emitting diode LED1 and the second light emitting diode LED2.

制御回路6は、第1発光ダイオードLED1と第2発光ダイオードLED2を相補的に点消灯させる点灯期間Tonと、第1発光ダイオードLED1と第2発光ダイオードLED2の両方を消灯させる消灯期間Toffとを有するように、第1発光ダイオードLED1および第2発光ダイオードLED2の周期的な点消灯制御を行う点消灯制御部3と、一定周期TN内のパルス数変調制御により、第1発光ダイオードLED1および第2発光ダイオードLED2の点灯制御を行うPNM制御部7とを備えることを特徴とする。   The control circuit 6 has a lighting period Ton for turning on and off the first light-emitting diode LED1 and the second light-emitting diode LED2 in a complementary manner, and a light-off period Toff for turning off both the first light-emitting diode LED1 and the second light-emitting diode LED2. As described above, the first light emitting diode LED1 and the second light emitting diode are controlled by the on / off control unit 3 that performs periodic on / off control of the first light emitting diode LED1 and the second light emitting diode LED2, and the pulse number modulation control within the fixed period TN. And a PNM control unit 7 for controlling the lighting of the diode LED2.

図7(a)に示すように、色度制御信号STは、電源電圧VT に接続された色温度調整用可変抵抗RTから色温度制御ラインTCLを介して制御回路6に供給され、輝度制御信号SIは、電源電圧VIに接続された輝度調整用可変抵抗RIから輝度制御ラインICLを介して制御回路6に供給される。LEDモジュール11は、図1の制御回路6の出力側と同様に構成され、第1発光部9を構成するLED1と、第2発光部10を構成するLED2と、8で示されるLED駆動用バイポーラトランジスタQ1、Q2とを備える。図7(a)においては、表示を省略しているが、抵抗R1、R2は、図1と同様に接続される。また、図7(a)においては、LEDモジュール11を2個配置した構成例が示されているが、2個に限定されるものではなく、更に3個以上並列に接続されていてもよい。 As shown in FIG. 7A, the chromaticity control signal ST is supplied from the color temperature adjusting variable resistor RT connected to the power supply voltage V T to the control circuit 6 via the color temperature control line TCL, and brightness control is performed. The signal SI is supplied from the brightness adjusting variable resistor RI connected to the power supply voltage V I to the control circuit 6 via the brightness control line ICL. The LED module 11 is configured in the same manner as the output side of the control circuit 6 of FIG. 1. The LED 1 that constitutes the first light emitting unit 9, the LED 2 that constitutes the second light emitting unit 10, and the LED driving bipolar indicated by 8. Transistors Q1 and Q2 are provided. Although not shown in FIG. 7A, the resistors R1 and R2 are connected in the same manner as in FIG. FIG. 7A shows a configuration example in which two LED modules 11 are arranged. However, the configuration example is not limited to two, and three or more may be connected in parallel.

また、輝度調整用可変抵抗RI、色温度調整用可変抵抗RTはボリューム抵抗、或いは、スライド抵抗どちらを用いてもよい。  Further, as the brightness adjusting variable resistor RI and the color temperature adjusting variable resistor RT, either a volume resistor or a slide resistor may be used.

制御回路6は、図7(b)に示すように、点消灯制御部3と、PNM制御部7を備える。点消灯制御部3は、色度制御信号STおよび輝度制御信号SIを受信して、パルス幅変調制御によるオン/オフ信号からなるスイッチング制御信号S1、S2を出力する。PNM制御部7は、色度制御信号STおよび輝度制御信号SIを受信して、パルス数変調制御によるPNM出力信号PSI、PSTを出力し、これらのPNM出力信号PSI、PSTは、それぞれスイッチング制御信号S1、S2に重畳されている。  The control circuit 6 includes a lighting on / off control unit 3 and a PNM control unit 7 as shown in FIG. The on / off control unit 3 receives the chromaticity control signal ST and the luminance control signal SI, and outputs switching control signals S1 and S2 composed of on / off signals by pulse width modulation control. The PNM control unit 7 receives the chromaticity control signal ST and the luminance control signal SI, and outputs PNM output signals PSI and PST based on pulse number modulation control. The PNM output signals PSI and PST are respectively switching control signals. Superimposed on S1 and S2.

図8は、本発明の第1の実施の形態に係る照明装置において、LEDモジュール11に対する制御系をリモート制御系で構成した場合の模式的ブロック構成を示す。  FIG. 8 shows a schematic block configuration when the control system for the LED module 11 is configured as a remote control system in the lighting apparatus according to the first embodiment of the present invention.

すなわち、リモート制御系は、輝度調整用リモートスイッチ18と色温度調整用リモートスイッチ19を備えるリモートスイッチ部17と、受信部15とリモート制御回路16を有するリモート制御部14とを備える。リモートスイッチ部17からの制御信号は、無線信号としてリモート制御部14内の受信部15に供給され、さらに受信部15の出力端からリモート制御回路16に転送され、リモート制御回路16からスイッチング制御信号S1、S2を出力する。リモート制御回路16内には、図7(b)と同様に、点消灯制御部3およびPNM制御部7が含まれている。  That is, the remote control system includes a remote switch unit 17 including a brightness adjustment remote switch 18 and a color temperature adjustment remote switch 19, and a remote control unit 14 including a reception unit 15 and a remote control circuit 16. The control signal from the remote switch unit 17 is supplied as a radio signal to the receiving unit 15 in the remote control unit 14 and further transferred from the output end of the receiving unit 15 to the remote control circuit 16, and from the remote control circuit 16 to the switching control signal S1 and S2 are output. The remote control circuit 16 includes the lighting on / off control unit 3 and the PNM control unit 7 as in FIG. 7B.

図9は、輝度調整用ボリューム抵抗(RVI)20および色温度調整用ボリューム抵抗(RVT)21からなるボリューム抵抗部22による明るさ調整用および色温度調整用ボリューム抵抗制御系の概観図を示す。図9に示されるボリューム抵抗部22の輝度調整用ボリューム抵抗(RVI)20および色温度調整用ボリューム抵抗(RVT)21を調整することによって、電源電圧VT に接続された色温度調整用可変抵抗RTから制御回路6に供給される色度制御信号ST、および電源電圧VIに接続された輝度調整用可変抵抗RIから制御回路6に供給される輝度制御信号SIを制御することができる。 FIG. 9 shows an overview of a brightness adjustment and color temperature adjustment volume resistance control system using a volume resistance unit 22 including a brightness adjustment volume resistance (RVI) 20 and a color temperature adjustment volume resistance (RVT) 21. By adjusting the luminance adjusting volume resistor (RVI) 20 and the color temperature adjusting volume resistor (RVT) 21 of the volume resistor section 22 shown in FIG. 9, the color temperature adjusting variable resistor connected to the power supply voltage V T is adjusted. The chromaticity control signal ST supplied from the RT to the control circuit 6 and the luminance control signal SI supplied to the control circuit 6 from the luminance adjustment variable resistor RI connected to the power supply voltage V I can be controlled.

図10(a)は、本発明の第1の実施の形態に係る照明装置において、PNM出力信号PSTおよびPSIを出力するPNM制御部7の模式的回路ブロック構成図を示す。また、図10(b)は、PNM出力信号PSTの模式的波形を示し、図10(c)は、PNM出力信号PSIの模式的波形を示す。  FIG. 10A shows a schematic circuit block configuration diagram of the PNM control unit 7 that outputs the PNM output signals PST and PSI in the lighting apparatus according to the first embodiment of the present invention. FIG. 10B shows a schematic waveform of the PNM output signal PST, and FIG. 10C shows a schematic waveform of the PNM output signal PSI.

図10(a)に示されるように、色度制御信号STは、ADコンバータ4に供給され、PNM制御されたPNM出力信号PSTを出力する。ADコンバータ4には、PNM出力信号PSTのパルス数をカウントし、ADコンバータにフィードバックするカウンタ回路5が接続されている。同様に、輝度制御信号SIは、ADコンバータ4に供給され、PNM制御されたPNM出力信号PSIを出力する。ADコンバータ4には、PNM出力信号PSIのパルス数をカウントし、ADコンバータにフィードバックするカウンタ回路5が接続されている。  As shown in FIG. 10A, the chromaticity control signal ST is supplied to the AD converter 4 and outputs a PNM-controlled PNM output signal PST. The AD converter 4 is connected to a counter circuit 5 that counts the number of pulses of the PNM output signal PST and feeds back to the AD converter. Similarly, the luminance control signal SI is supplied to the AD converter 4 and outputs the PNM-controlled PNM output signal PSI. The AD converter 4 is connected to a counter circuit 5 that counts the number of pulses of the PNM output signal PSI and feeds back to the AD converter.

色度制御信号STのPNM制御されたPNM出力信号PSTは、例えば、図10(b)に示すように、一定周期TN内において、パルス数を変調された信号波形として表示される。図10(b)の例では、一定周期TN0,TN1,…,TN126,TN127に対して、それぞれ9個、14個、…3個、2個のパルス数が変調されて表示されている。  For example, as shown in FIG. 10B, the PNM output signal PST subjected to PNM control of the chromaticity control signal ST is displayed as a signal waveform in which the number of pulses is modulated within a certain period TN. In the example of FIG. 10 (b), the number of pulses of 9, 14,..., 2 and 2 is modulated and displayed for the fixed periods TN0, TN1,..., TN126, TN127, respectively.

輝度制御信号SIのPNM制御されたPNM出力信号PSIも、同様に、例えば、図10(c)に示すように、一定周期TN内において、パルス数を変調された信号波形として表示される。図10(c)の例でも、一定周期TN0,TN1,…,TN126,TN127に対して、それぞれ9個、14個、…3個、2個のパルス数が変調されて表示されているが、これに限るものではない。  Similarly, the PNM-controlled PNM output signal PSI of the luminance control signal SI is also displayed as a signal waveform in which the number of pulses is modulated within a certain period TN, as shown in FIG. 10C, for example. Even in the example of FIG. 10C, the number of pulses of 9, 14,..., 2 and 2 is modulated and displayed for each of the fixed periods TN0, TN1,..., TN126, TN127. This is not a limitation.

図10(b)および図10(c)に示されるPNM出力信号PSTおよびPSIによって、後述するように、点灯期間Ton内におけるLED1の点灯期間T1のスイッチング制御信号S1がPNM制御を受け、PNM制御に応じて一定周期TN内のパルス数の増減が実行される。同様に、図10(b)および図10(c)に示されるPNM出力信号PSTおよびPSIによって、後述するように、点灯期間Ton内におけるLED2の点灯期間T2のスイッチング制御信号S2もPNM制御を受け、PNM制御に応じて一定周期TN内のパルス数の増減が実行される。  As will be described later, the switching control signal S1 of the lighting period T1 of the LED 1 within the lighting period Ton is subjected to PNM control by the PNM output signals PST and PSI shown in FIG. 10B and FIG. The number of pulses in the fixed period TN is increased / decreased accordingly. Similarly, the switching control signal S2 of the lighting period T2 of the LED 2 within the lighting period Ton is also subjected to PNM control by the PNM output signals PST and PSI shown in FIGS. 10B and 10C, as will be described later. In response to the PNM control, the number of pulses in the fixed period TN is increased or decreased.

図11は、本発明の第1の実施の形態に係る照明装置において、PNM出力信号の説明図であって、図11(a)は、100%の明るさを得る場合のPNM波形の例、図11(b)は、複数個のパルス数を減少させた場合のPNM波形の例、図11(c)は、照度とPNMのOFF区間数との関係を示す模式図である。図11の例では、128波形を1周期(TN)としている。図11(b)に示されるように、0〜128波形をOFF区間(点線で示される状態)に変えることで明るさを変化することができる。また、図11(a)と比較し、図11(b)の矢印で示されるように、OFF区間を増減させることで明るさを変換することができる。  FIG. 11 is an explanatory diagram of a PNM output signal in the lighting apparatus according to the first embodiment of the present invention, and FIG. 11A shows an example of a PNM waveform when 100% brightness is obtained, FIG. 11B shows an example of a PNM waveform when the number of pulses is reduced, and FIG. 11C is a schematic diagram showing the relationship between illuminance and the number of PNM OFF sections. In the example of FIG. 11, 128 waveforms are defined as one period (TN). As shown in FIG. 11B, the brightness can be changed by changing the 0-128 waveform to the OFF section (state indicated by the dotted line). Also, as compared with FIG. 11A, the brightness can be converted by increasing / decreasing the OFF section as indicated by the arrows in FIG. 11B.

図11(c)に示されるように、OFF区間数を増加し、128波形すべてがOFF区間となる場合には、照度は0となることが明らかである。  As shown in FIG. 11C, when the number of OFF sections is increased and all 128 waveforms are in the OFF section, it is clear that the illuminance becomes zero.

また、色温度変化は、PWM制御により、デューティ比を変えることによって実現することができることも明らかである。  It is also clear that the color temperature change can be realized by changing the duty ratio by PWM control.

本発明の第1の実施の形態に係る照明装置において、第1発光ダイオードLED1および第2発光ダイオードLED2は、互いに隣接して配置したことを特徴とする。  In the illumination device according to the first embodiment of the present invention, the first light emitting diode LED1 and the second light emitting diode LED2 are arranged adjacent to each other.

また、本発明の第1の実施の形態に係る照明装置において、第1発光ダイオードLED1および第2発光ダイオードLED2は、互いに隣接して配置し、かつ複数組配列して実装してもよい。  Further, in the illumination device according to the first embodiment of the present invention, the first light emitting diode LED1 and the second light emitting diode LED2 may be arranged adjacent to each other and arranged in plural sets.

図12は、本発明の第1の実施の形態に係る照明装置において、色温度の異なる第1LED列40と第2LED列50を隣接させて実装する場合のLED駆動回路系の模式的回路ブロック構成を示す。図12に示されるLED駆動回路系は、電源ラインVDCLに接続される三端子レギュレータ24と、三端子レギュレータ24に接続され,輝度制御信号SIおよび色度制御信号STを出力するマイクロコンピュータ26と、バイポーラトランジスタQA,QBからなり、コントロールラインCTL1にスイッチング制御信号S1を供給するLED駆動回路30と、コントロールラインCTL1に接続され、第1LED列40を駆動するLED列駆動用のバイポーラトランジスタ32と、バイポーラトランジスタQA,QBからなり、コントロールラインCTL2にスイッチング制御信号S2を供給するLED駆動回路30と、コントロールラインCTL2に接続され、第2LED列50を駆動するLED列駆動用のバイポーラトランジスタ32とを備える。  FIG. 12 is a schematic circuit block configuration of an LED drive circuit system when the first LED row 40 and the second LED row 50 having different color temperatures are mounted adjacent to each other in the lighting device according to the first embodiment of the present invention. Indicates. The LED drive circuit system shown in FIG. 12 includes a three-terminal regulator 24 connected to a power supply line VDCL, a microcomputer 26 connected to the three-terminal regulator 24, and outputs a luminance control signal SI and a chromaticity control signal ST. An LED drive circuit 30 comprising a bipolar transistor QA, QB and supplying a switching control signal S1 to the control line CTL1, a bipolar transistor 32 for driving the LED string connected to the control line CTL1 and driving the first LED string 40, and bipolar An LED drive circuit 30 comprising transistors QA and QB and supplying a switching control signal S2 to the control line CTL2, and a bipolar transistor for driving the LED row connected to the control line CTL2 and driving the second LED row 50 And a 2.

マイクロコンピュータ26には、水晶振動子28からクロック信号が供給され、また、輝度調整用可変抵抗(RI)12を介して輝度制御信号SI、色温度調整用可変抵抗(RT)13を介して色度制御信号STがそれぞれ供給される。  The microcomputer 26 is supplied with a clock signal from a crystal oscillator 28, and also has a luminance control signal SI through a luminance adjustment variable resistor (RI) 12 and a color through a color temperature adjustment variable resistor (RT) 13. A degree control signal ST is supplied.

図12に示されるマイクロコンピュータ26が、図1,図7に示される制御回路6と同等の働きをする。  The microcomputer 26 shown in FIG. 12 functions in the same manner as the control circuit 6 shown in FIGS.

また、図13は、本発明の第1の実施の形態に係る照明装置において、色温度の異なるLED列を2個隣接させ、かつn組配列して実装する場合の模式的回路ブロック構成を示す。  FIG. 13 shows a schematic circuit block configuration in the case where two LED rows having different color temperatures are mounted adjacently and arranged in n groups in the lighting apparatus according to the first embodiment of the present invention. .

図13には、電源ラインVDCLとコントロールラインCTL1間に配置される第1LED列40−1,40−2,…,40−nと、電源ラインVDCLとコントロールラインCTL2間に配置される第2LED列50−1,50−2,…,50−nと、接地ラインGNDLが示されている。  FIG. 13 shows first LED strings 40-1, 40-2,..., 40-n arranged between the power supply line VDCL and the control line CTL1, and second LED strings arranged between the power supply line VDCL and the control line CTL2. 50-1, 50-2,..., 50-n and a ground line GNDL are shown.

本発明の第1の実施の形態に係る照明装置において、図12に示されるLED駆動回路系の模式的回路ブロック構成を適用することによって、図13に示すように、色温度の異なるLED列を2個隣接させ、かつn組配列した場合の回路構成も同様に、拡張して実現することができる。  In the lighting apparatus according to the first embodiment of the present invention, by applying the schematic circuit block configuration of the LED drive circuit system shown in FIG. 12, as shown in FIG. Similarly, the circuit configuration in the case where two sets are adjacent to each other and n sets are arranged can be extended and realized.

図14(a)は、本発明の第1の実施の形態に係る照明装置において、色温度の異なるLED列を2個隣接配置し、かつn組配列して実装する場合の模式的配置図であって、ライン状の照明装置の構成図、図14(b)円形状の照明装置の構成図を示す。  FIG. 14A is a schematic layout diagram in the case where two LED rows having different color temperatures are arranged adjacently and n sets are arranged in the lighting device according to the first embodiment of the present invention. FIG. 14B is a configuration diagram of a linear illumination device, and FIG. 14B is a configuration diagram of a circular illumination device.

本発明の第1の実施の形態に係る照明装置においては、図14(a)に示すように、第1発光ダイオードLED1および第2発光ダイオードLED2は、互いに隣接して配置し、かつ複数組ライン状に配列して実装することを特徴とする。  In the illuminating device according to the first embodiment of the present invention, as shown in FIG. 14A, the first light emitting diode LED1 and the second light emitting diode LED2 are arranged adjacent to each other and have a plurality of sets of lines. It is characterized by being arranged in a shape.

また、本発明の第1の実施の形態に係る照明装置においては、図14(b)に示すように、第1発光ダイオードおよび第2発光ダイオードは、互いに隣接して配置し、かつ複数組円形状に配列して実装することを特徴とする。  Further, in the illumination device according to the first embodiment of the present invention, as shown in FIG. 14 (b), the first light emitting diode and the second light emitting diode are arranged adjacent to each other, and a plurality of sets of circles are arranged. It is characterized by being mounted in a shape.

色温度の異なるLEDを隣接させて実装することで、それぞれのLEDから放たれる光を混ざりやすくし、照射面での色のバラツキ、ムラを無くすことができる。  By mounting LEDs having different color temperatures adjacent to each other, it is possible to easily mix the light emitted from the LEDs, and to eliminate color variation and unevenness on the irradiated surface.

特に、図14(a)において、Aの距離をすべて一定にすることで、照射面における明るさのムラを無くすことができる。2個のLED1、LED2に対し、1個のリフレクタを配置することにより、さらに任意の場所に対して効率的に光を集光させて、照度を上げることも可能である。   In particular, in FIG. 14A, by making all the distances A constant, unevenness in brightness on the irradiated surface can be eliminated. By arranging one reflector for the two LEDs 1 and 2, it is possible to efficiently collect light at an arbitrary place and increase the illuminance.

本発明の第1の実施の形態に係る照明装置においては、LED駆動回路系を、制御回路部とLEDモジュール部の2つに分け、制御回路部は可変抵抗で任意に発生するDC電圧を読みとり、それに応じたPWM信号を出力し、出力されたPWM信号はLEDモジュール部のLED駆動用バイポーラトランジスタQ1,Q2(QD)をそれぞれオン、オフし、LEDの点消灯を行うことができ、制御回路1つで、多数のLEDモジュールの制御を可能にしており、使用するセットの大きさに応じて、LEDモジュール部の増減が可能である。   In the lighting device according to the first embodiment of the present invention, the LED drive circuit system is divided into two parts, that is, a control circuit part and an LED module part, and the control circuit part reads a DC voltage arbitrarily generated by a variable resistor. The PWM signal corresponding to the output can be output, and the output PWM signal can turn on / off the LED driving bipolar transistors Q1 and Q2 (QD) of the LED module unit to turn on / off the LED. One enables the control of a large number of LED modules, and the number of LED module portions can be increased or decreased according to the size of the set to be used.

また、本発明の第1の実施の形態に係る照明装置においては、点灯期間T1,T2のオン波形をパルス数変調制御により、抜くことで、0〜100%の明るさ可変を可能にしている。  Moreover, in the illuminating device which concerns on the 1st Embodiment of this invention, the brightness variable of 0 to 100% is enabled by extracting the ON waveform of lighting period T1, T2 by pulse number modulation control. .

また、本発明の第1の実施の形態に係る照明装置においては、明るさを0〜100%とすることが可能となるため、照明器具の応用範囲が広くなる。  Moreover, in the illuminating device which concerns on the 1st Embodiment of this invention, since it becomes possible to make brightness 0-100%, the application range of a lighting fixture becomes wide.

色温度可変は、色温度の異なるLED1とLED2を相補的に(両者のオンデューティが合計100%となるように)点消灯させるように、点灯期間Tonを設定する。   In the variable color temperature, the lighting period Ton is set so that the LED 1 and LED 2 having different color temperatures are turned on and off in a complementary manner (so that the on-duty of both is 100% in total).

また、この点灯期間Tonのくり返し128波形を1周期TNとし、0〜128波形を、パルス数変調制御により、OFFにすることにより明るさを可変にすることができる。   Further, the brightness can be varied by setting the repeated 128 waveforms of the lighting period Ton to one cycle TN and turning off the 0 to 128 waveforms by pulse number modulation control.

例えば、何も波形を抜かなければ、明るさは100%であるが、64波形抜いて、そこをOFFにさせておけば、明るさは半分の50%となる。128波形分すべてをOFF区間にすれば、明るさは0%となる。これにより、明るさを128段階で変え、かつ明るさを0〜100%まで可変させることが可能になる。
制御回路6による照明光の色度調整動作(色温度調整動作)について、図15を参照しながら詳細に説明する。図15は、本発明の第1の実施の形態に係る照明装置において、照明光の色度調整動作を説明するための図であって、図15(a)は、点灯期間Ton(=T1+T2)に対して、T1<T2の例、図15(b)は、T1=T2の例、図15(c)は、T1>T2の例をそれぞれ示している。
For example, if no waveform is extracted, the brightness is 100%, but if 64 waveforms are extracted and turned off, the brightness is 50%, which is half. If all 128 waveforms are in the OFF section, the brightness is 0%. As a result, the brightness can be changed in 128 steps, and the brightness can be varied from 0 to 100%.
The chromaticity adjustment operation (color temperature adjustment operation) of the illumination light by the control circuit 6 will be described in detail with reference to FIG. FIG. 15 is a diagram for explaining the chromaticity adjustment operation of the illumination light in the illumination device according to the first embodiment of the present invention. FIG. 15A is a lighting period Ton (= T1 + T2). On the other hand, an example of T1 <T2, FIG. 15B shows an example of T1 = T2, and FIG. 15C shows an example of T1> T2.

本発明の第1の実施の形態に係る照明装置においては、図15に示すように、制御回路6は、色度制御信号STに応じて、点灯期間Ton内における第1発光部9の点灯期間T1と第2発光部10の点灯期間T2との比率を可変制御すると共に、一定周期TN内のPNM制御により、第1発光部9および第2発光部10の点灯制御を行うことを特徴とする。  In the illuminating device according to the first embodiment of the present invention, as shown in FIG. 15, the control circuit 6 controls the lighting period of the first light emitting unit 9 within the lighting period Ton according to the chromaticity control signal ST. The ratio between T1 and the lighting period T2 of the second light emitting unit 10 is variably controlled, and the lighting control of the first light emitting unit 9 and the second light emitting unit 10 is performed by PNM control within a fixed period TN. .

図15は、照明光の色度調整動作を説明するための図である。なお、図15(a)乃至(c)の符号S1、S2は、スイッチング制御信号S1、S2の論理状態、すなわち、LED1、LED2の点消灯状態を各々示している。   FIG. 15 is a diagram for explaining the chromaticity adjustment operation of the illumination light. Note that reference numerals S1 and S2 in FIGS. 15A to 15C indicate the logic states of the switching control signals S1 and S2, that is, the on / off states of the LEDs 1 and 2, respectively.

図15(a)乃至(c)に示すように、制御回路6は、第1発光部9を構成するLED1と第2発光部10を構成するLED2を相補的に、すなわち、両者のオンデューティが合計で100%となるように、点消灯させる点灯期間Tonと、LED1とLED2の両方を消灯させる消灯期間Toffと、LED1およびLED2の周期的な点消灯制御を行う構成とされている。   As shown in FIGS. 15A to 15C, the control circuit 6 complements the LED 1 constituting the first light emitting unit 9 and the LED 2 constituting the second light emitting unit 10, that is, the on-duty of both is The lighting period Ton for turning on / off, the turning-off period Toff for turning off both LED1 and LED2, and the periodic turning-on / off control of LED1 and LED2 are set so that the total is 100%.

さらにまた、点灯期間Ton内におけるLED1の点灯期間T1、およびLED2の点灯期間T2のON波形は、更にパルス数変調制御によって、一定期間内のパルス数が減少化され、オフ期間を完全に0にすることができ、輝度を0に調整可能である。  Furthermore, the ON waveform of the lighting period T1 of the LED 1 and the lighting period T2 of the LED 2 in the lighting period Ton is further reduced by the pulse number modulation control so that the number of pulses within a certain period is reduced and the off period is completely zero. And the brightness can be adjusted to zero.

また、制御回路6は、入力される色度制御信号STに応じて、点灯期間Ton内における第1発光部LED1の点灯期間T1と第2発光部LED2の点灯期間T2との比率を可変制御する構成とされている。より具体的に述べると、照明光の色温度を下げる場合には、点灯期間Tonに対して第2発光部LED2の点灯期間T2が占める比率(第2発光部LED2のオンデューティ)を順次上げていけばよく(図15(c)→図15(b)→図15(a))、逆に、照明光の色温度を上げる場合には、第2発光部LED2のオンデューティを順次下げていけばよい(図15(a)→図15(b)→図15(c))。  Further, the control circuit 6 variably controls the ratio between the lighting period T1 of the first light emitting unit LED1 and the lighting period T2 of the second light emitting unit LED2 within the lighting period Ton according to the input chromaticity control signal ST. It is configured. More specifically, when the color temperature of the illumination light is lowered, the ratio of the lighting period T2 of the second light emitting unit LED2 to the lighting period Ton (on-duty of the second light emitting unit LED2) is sequentially increased. If it is necessary (FIG. 15 (c) → FIG. 15 (b) → FIG. 15 (a)), on the contrary, when the color temperature of the illumination light is increased, the on-duty of the second light emitting unit LED2 should be sequentially decreased. (FIG. 15 (a) → FIG. 15 (b) → FIG. 15 (c)).

図16は、本発明の第1の実施の形態に係る照明装置において、点灯期間Ton(=T1+T2)に対してLED2の点灯期間T2が占める比率に応じた色温度変化を説明するための図である。一方、図17は、点灯期間Ton(=T1+T2)に対してLED2の点灯期間T2が占める比率に応じた色度変化を説明するための色度図である。図17中の実線は、黒体放射曲線を示している。  FIG. 16 is a diagram for explaining the color temperature change according to the ratio of the lighting period T2 of the LED 2 to the lighting period Ton (= T1 + T2) in the lighting device according to the first embodiment of the present invention. is there. On the other hand, FIG. 17 is a chromaticity diagram for explaining the chromaticity change according to the ratio of the lighting period T2 of the LED 2 to the lighting period Ton (= T1 + T2). A solid line in FIG. 17 indicates a black body radiation curve.

図16に示すように、本発明の第1の実施の形態にかかる照明装置によれば、第1発光部LED1の色温度(例えば、5000K)から第2発光部LED2の色温度(例えば、2600K)まで連続的に照明光の色温度を調整することが可能となる。   As shown in FIG. 16, according to the lighting apparatus according to the first embodiment of the present invention, the color temperature (for example, 2600K) of the second light emitting unit LED2 from the color temperature (for example, 5000K) of the first light emitting unit LED1. ) Until the color temperature of the illumination light can be adjusted continuously.

また、照明光の色度については、図17に示すように、色度座標上で0.06〜0.14程度の広い調整範囲を得ることが可能となる。すなわち、LED2のオンデューティ100%と0%の座標において、Xの値の範囲ΔXで約0.14程度、Yの値の範囲ΔYで約0.06程度の広い調整範囲を得ることが可能となる。  As for the chromaticity of the illumination light, as shown in FIG. 17, it is possible to obtain a wide adjustment range of about 0.06 to 0.14 on the chromaticity coordinates. That is, it is possible to obtain a wide adjustment range of about 0.14 in the X value range ΔX and about 0.06 in the Y value range ΔY at the coordinates of the on-duty 100% and 0% of the LED 2. Become.

従って、本発明の第1の実施の形態に係る照明装置のよれば、1つのモジュールで様々な色調の白色照明を行うことが可能となり、照度の調整範囲も0〜100%と広範囲である。   Therefore, according to the illuminating device according to the first embodiment of the present invention, it is possible to perform white illumination of various colors with one module, and the illuminance adjustment range is as wide as 0 to 100%.

また、本発明の第1の実施の形態に係る照明装置のよれば、第1発光ダイオードLED1と第2発光ダイオードLED2のオンデューティが合計で100(%)となるように、両者の点消灯制御が行われるので、点灯期間Ton内における第1発光部LED1の点灯期間T1と第2発光部LED2の点灯期間T2との比率を可変制御しても、点灯期間Ton全体として見れば、常時点灯されている形となるので、照明光の明るさを一定に保つことが可能となる。   Moreover, according to the illuminating device which concerns on the 1st Embodiment of this invention, both on / off control is performed so that the on-duty of 1st light emitting diode LED1 and 2nd light emitting diode LED2 may be set to 100 (%) in total. Therefore, even if the ratio between the lighting period T1 of the first light emitting unit LED1 and the lighting period T2 of the second light emitting unit LED2 in the lighting period Ton is variably controlled, the lighting period Ton is always on. Therefore, the brightness of the illumination light can be kept constant.

本発明に係る照明装置によれば、簡易な構成で、照明光の色度と輝度を、0〜100%の広範囲に調整することができる。  According to the illumination device of the present invention, the chromaticity and luminance of illumination light can be adjusted over a wide range of 0 to 100% with a simple configuration.

[第2の実施の形態]
本発明の第2の実施の形態に係る照明装置は、第1の実施の形態に係る照明装置とは、色度調整動作および輝度調整動作のタイミングチャートが異なるのみであり、基本的な回路構成は、図1と同様であり、また具体的な回路構成も図7乃至図10と同様である。更に、PNM制御についても、第1の実施の形態に係る照明装置と同様に適用される。
[Second Embodiment]
The illumination device according to the second embodiment of the present invention differs from the illumination device according to the first embodiment only in the timing charts of the chromaticity adjustment operation and the luminance adjustment operation, and the basic circuit configuration. These are the same as in FIG. 1, and the specific circuit configuration is also the same as in FIGS. Furthermore, the PNM control is also applied in the same manner as the lighting device according to the first embodiment.

また、図12乃至図14に示すように、色温度の異なるLED列を2個隣接させて実装する場合のLED駆動回路系の回路ブロック構成、色温度の異なるLED列を2個隣接させ、かつn組配列して実装する場合の回路ブロック構成などについても、本発明の第1の実施の形態に係る照明装置と同様である。  Also, as shown in FIG. 12 to FIG. 14, the circuit block configuration of the LED drive circuit system when two LED rows having different color temperatures are mounted adjacent to each other, two LED columns having different color temperatures are adjacent, and The circuit block configuration and the like in the case of mounting by arranging n sets are the same as those of the lighting apparatus according to the first embodiment of the present invention.

このため、第1の実施の形態に係る照明装置と重複する説明は省略する。  For this reason, the description which overlaps with the illuminating device which concerns on 1st Embodiment is abbreviate | omitted.

本発明の第2の実施の形態に係る照明装置も、図1に示す第1の実施の形態と同様に、互いに色温度の異なる第1発光部9および第2発光部10と、第1発光部9および第2発光部10の点消灯制御を行う制御回路6とを備える。  Similarly to the first embodiment shown in FIG. 1, the lighting device according to the second embodiment of the present invention also includes the first light emitting unit 9 and the second light emitting unit 10 having different color temperatures, and the first light emission. And a control circuit 6 that performs turning on / off control of the unit 9 and the second light emitting unit 10.

制御回路6は、第1発光部9と第2発光部10を相補的に点消灯させる点灯期間Tonと、第1発光部9と第2発光部10の両方を消灯させる消灯期間Toffとを有するように、第1発光部9および第2発光部10の周期的な点消灯制御を行うと共に、一定周期TN内のパルス数変調制御により、第1発光部9および第2発光部10の点灯制御を行うことを特徴とする。   The control circuit 6 includes a lighting period Ton for turning on and off the first light emitting unit 9 and the second light emitting unit 10 in a complementary manner, and a lighting off period Toff for turning off both the first light emitting unit 9 and the second light emitting unit 10. As described above, the periodic light on / off control of the first light emitting unit 9 and the second light emitting unit 10 is performed, and the lighting control of the first light emitting unit 9 and the second light emitting unit 10 is performed by the pulse number modulation control within the fixed period TN. It is characterized by performing.

また、本発明の第2の実施の形態に係る照明装置において、制御回路6は、点灯期間Tonの長さを一定に維持する一方、輝度制御信号SIに応じて、消灯期間Toffの長さを可変制御すると共に、一定周期TN内のパルス数変調制御により、第1発光部9および第2発光部10の点灯制御を行うことを特徴とする。  Further, in the lighting device according to the second embodiment of the present invention, the control circuit 6 maintains the length of the lighting period Ton constant, while setting the length of the light-off period Toff according to the luminance control signal SI. While performing variable control, the lighting control of the 1st light emission part 9 and the 2nd light emission part 10 is performed by the pulse number modulation control in the fixed period TN, It is characterized by the above-mentioned.

更に具体的に、本発明の第2の実施の形態に係る照明装置は、図7(a)に示す第1の実施の形態と同様に、互いに色温度の異なる第1発光部9および第2発光部10と、第1発光部9および第2発光部10の点消灯制御を行う制御回路6とを備える。  More specifically, the illuminating device according to the second embodiment of the present invention is similar to the first embodiment shown in FIG. 7A in that the first light emitting unit 9 and the second light emitting unit 9 and the second light emitting unit 9 are different in color temperature. The light emission part 10 and the control circuit 6 which performs lighting on / off control of the 1st light emission part 9 and the 2nd light emission part 10 are provided.

制御回路6は、図7(b)に示す第1の実施の形態と同様に、第1発光部9と第2発光部10を相補的に点消灯させる点灯期間Tonと、第1発光部9と第2発光部10の両方を消灯させる消灯期間Toffとを有するように、第1発光部9および第2発光部10の周期的な点消灯制御を行う点消灯制御部3と、一定周期TN内のパルス数変調制御により、第1発光部9および第2発光部10の点灯制御を行うパルス数変調制御部7を備えることを特徴とする。  Similarly to the first embodiment shown in FIG. 7B, the control circuit 6 includes a lighting period Ton that complementarily turns on and off the first light emitting unit 9 and the second light emitting unit 10, and the first light emitting unit 9. And a turn-on / off control unit 3 that performs periodic on / off control of the first light-emitting unit 9 and the second light-emitting unit 10 so as to have a light-off period Toff that turns off both the light-emitting unit 10 and the second light-emitting unit 10; The pulse number modulation control part 7 which performs lighting control of the 1st light emission part 9 and the 2nd light emission part 10 by the pulse number modulation control of the inside is provided.

また、本発明の第2の実施の形態に係る照明装置において、図18に示すように、点消灯制御部3は、更に、前記点灯期間Tonの長さを一定に維持する一方、輝度制御信号SIに応じて、消灯期間Toffの長さを可変制御すると共に、パルス数変調制御部7も、更に、輝度制御信号SIに応じて、一定周期TN内のパルス数変調制御により、第1発光部9および第2発光部10の点灯制御を行うことを特徴とする。  Moreover, in the illuminating device according to the second embodiment of the present invention, as shown in FIG. 18, the lighting on / off control unit 3 further maintains the length of the lighting period Ton constant, while the luminance control signal The length of the extinguishing period Toff is variably controlled according to SI, and the pulse number modulation control unit 7 further controls the first light emitting unit by pulse number modulation control within a fixed period TN according to the luminance control signal SI. 9 and the lighting control of the 2nd light emission part 10 are performed.

更に具体的に、本発明の第2の実施の形態に係る照明装置は、図7(a)に示す第1の実施の形態と同様に、互いに色温度の異なる第1発光ダイオードLED1および第2発光ダイオードLED2と、第1発光ダイオードLED1および第2発光ダイオードLED2の点消灯制御を行う制御回路6とを備える。  More specifically, the illumination device according to the second embodiment of the present invention is similar to the first embodiment shown in FIG. 7A in that the first light-emitting diodes LED1 and the second light-emitting diodes LED1 and second having different color temperatures are used. The light emitting diode LED2 and a control circuit 6 that controls turning on / off of the first light emitting diode LED1 and the second light emitting diode LED2 are provided.

制御回路6は、図7(b)に示す第1の実施の形態と同様に、第1発光ダイオードLED1と第2発光ダイオードLED2を相補的に点消灯させる点灯期間Tonと、第1発光ダイオードLED1と第2発光ダイオードLED2の両方を消灯させる消灯期間Toffとを有するように、第1発光ダイオードLED1および第2発光ダイオードLED2の周期的な点消灯制御を行う点消灯制御部3と、一定周期TN内のパルス数変調制御により、第1発光ダイオードLED1および第2発光ダイオードLED2の点灯制御を行うパルス数変調制御部7とを備えることを特徴とする。   As in the first embodiment shown in FIG. 7B, the control circuit 6 includes a lighting period Ton for turning on and off the first light emitting diode LED1 and the second light emitting diode LED2 in a complementary manner, and the first light emitting diode LED1. And a turn-on / off control unit 3 that performs periodic turning-on / off control of the first light-emitting diode LED1 and the second light-emitting diode LED2 so as to have both a light-off period Toff for turning off both the light-emitting diode LED2 and the second light-emitting diode LED2; And a pulse number modulation control unit 7 that performs lighting control of the first light emitting diode LED1 and the second light emitting diode LED2 by the pulse number modulation control.

また、本発明の第2の実施の形態に係る照明装置において、図18に示すように、点消灯制御部3は、更に、点灯期間Tonの長さを一定に維持する一方、輝度制御信号SIに応じて、消灯期間Toffの長さを可変制御すると共に、パルス数変調制御部7も、更に、輝度制御信号SIに応じて、一定周期TN内のパルス数変調制御により、第1発光ダイオードLED1および第2発光ダイオードLED2の点灯制御を行うことを特徴とする。  Moreover, in the illuminating device according to the second embodiment of the present invention, as shown in FIG. 18, the on / off control unit 3 further maintains the length of the lighting period Ton constant, while the luminance control signal SI. Accordingly, the length of the turn-off period Toff is variably controlled, and the pulse number modulation control unit 7 further controls the first light emitting diode LED1 by the pulse number modulation control within the fixed period TN according to the luminance control signal SI. Further, the lighting control of the second light emitting diode LED2 is performed.

図18は、本発明の第2の実施の形態に係る照明装置において、照明光の輝度調整動作の一例を説明するための図である。図18(a)乃至(c)の符号S1,S2は、スイッチング制御信号S1,S2の論理状態、すなわち、LED1,LED2の点消灯状態を各々示している。  FIG. 18 is a diagram for explaining an example of the brightness adjustment operation of the illumination light in the illumination device according to the second embodiment of the present invention. Reference numerals S1 and S2 in FIGS. 18A to 18C indicate the logical states of the switching control signals S1 and S2, that is, the on / off states of the LEDs 1 and 2, respectively.

図19は、本発明の第2の実施の形態に係る照明装置において、消灯期間Toffの長さに応じた輝度変化を説明するための図である。  FIG. 19 is a diagram for explaining a change in luminance according to the length of the extinguishing period Toff in the lighting apparatus according to the second embodiment of the present invention.

図19に示すように、消灯期間Toffが長いほど、照明光の輝度は低くなり、逆に、消灯期間Toffが短いほど、照明光の輝度は高くなる。点灯期間Tonの長さを一定に維持する一方、輝度制御信号SIに応じて、消灯期間Toffの長さを可変制御し、照明光の輝度を下げる場合には、消灯期間Toffを順次長く設定(図18(a)→図18(b)→図18(c))する。  As shown in FIG. 19, the longer the extinguishing period Toff, the lower the luminance of the illumination light. Conversely, the shorter the extinguishing period Toff, the higher the luminance of the illumination light. While maintaining the length of the lighting period Ton constant, the length of the lighting period Toff is variably controlled according to the luminance control signal SI, and when the luminance of the illumination light is lowered, the lighting period Toff is set to be longer ( 18 (a) → FIG. 18 (b) → FIG. 18 (c)).

照明光の輝度を上げる場合には、消灯期間Toffを順次短く設定(図18(c)→図18(b)→図18(a))する。  In order to increase the luminance of the illumination light, the extinguishing period Toff is set to be sequentially shortened (FIG. 18 (c) → FIG. 18 (b) → FIG. 18 (a)).

本発明の第2の実施の形態に係る照明装置においては、第1の実施の形態に係る照明装置と同様に、点灯期間Ton内におけるLED1の点灯期間T1、およびLED2の点灯期間T2のON波形は、パルス数変調制御によって、一定周期TN内のパルス数が減少化され、オフ期間を完全に0にすることができ、輝度を0に調整可能である。  In the lighting device according to the second embodiment of the present invention, similarly to the lighting device according to the first embodiment, the ON waveform of the lighting period T1 of the LED1 and the lighting period T2 of the LED2 within the lighting period Ton. In the pulse number modulation control, the number of pulses in the fixed period TN is reduced, the off period can be completely zero, and the luminance can be adjusted to zero.

図19において、点線の範囲は、消灯期間Toffを長く設定するPWM制御によるデューティ比を可変にした例であるが、完全には輝度を0%にすることはできない。これに対して、点灯期間Ton内におけるLED1の点灯期間T1、およびLED2の点灯期間T2のON波形に対してパルス数変調制御を適用することによって、一定周期TN内のパルス数が減少化され、オフ期間を完全に0にすることができ、輝度を0に調整可能である。  In FIG. 19, the range of the dotted line is an example in which the duty ratio by PWM control for setting the extinguishing period Toff to be long is variable, but the luminance cannot be completely reduced to 0%. On the other hand, by applying the pulse number modulation control to the ON waveform of the lighting period T1 of the LED1 and the lighting period T2 of the LED2 within the lighting period Ton, the number of pulses in the fixed period TN is reduced, The off period can be completely zero, and the luminance can be adjusted to zero.

本発明に係る照明装置によれば、簡易な構成で、照明光の色度と輝度を、0〜100%の広範囲に調整することができる。   According to the illumination device of the present invention, the chromaticity and luminance of illumination light can be adjusted over a wide range of 0 to 100% with a simple configuration.

[第3の実施の形態]
本発明の第3の実施の形態に係る照明装置は、第1の実施の形態に係る照明装置とは、色度調整動作および輝度調整動作のタイミングチャートが異なるのみであり、基本的な回路構成は、図1と同様であり、また具体的な回路構成も図7乃至図10と同様である。更に、PNM制御についても、第1の実施の形態に係る照明装置と同様に適用される。
[Third embodiment]
The illumination device according to the third embodiment of the present invention differs from the illumination device according to the first embodiment only in the timing charts of the chromaticity adjustment operation and the luminance adjustment operation, and the basic circuit configuration. These are the same as in FIG. 1, and the specific circuit configuration is also the same as in FIGS. Furthermore, the PNM control is also applied in the same manner as the lighting device according to the first embodiment.

また、図12乃至図14に示すように、色温度の異なるLED列を2個隣接させて実装する場合のLED駆動回路系の回路ブロック構成、色温度の異なるLED列を2個隣接させ、かつn組配列して実装する場合の回路ブロック構成などについても、本発明の第1の実施の形態に係る照明装置と同様である。このため、第1の実施の形態に係る照明装置と重複する説明は省略する。  Also, as shown in FIG. 12 to FIG. 14, the circuit block configuration of the LED drive circuit system when two LED rows having different color temperatures are mounted adjacent to each other, two LED columns having different color temperatures are adjacent, and The circuit block configuration and the like in the case of mounting by arranging n sets are the same as those of the lighting apparatus according to the first embodiment of the present invention. For this reason, the description which overlaps with the illuminating device which concerns on 1st Embodiment is abbreviate | omitted.

本発明の第3の実施の形態に係る照明装置は、図1に示す第1の実施の形態と同様に、互いに色温度の異なる第1発光部9および第2発光部10と、第1発光部9および第2発光部10の点消灯制御を行う制御回路6とを備える。  The lighting device according to the third embodiment of the present invention is similar to the first embodiment shown in FIG. 1 in that the first light emitting unit 9 and the second light emitting unit 10 having different color temperatures and the first light emission. And a control circuit 6 that performs turning on / off control of the unit 9 and the second light emitting unit 10.

制御回路6は、第1発光部9と第2発光部10を相補的に点消灯させる点灯期間Tonと、第1発光部9と第2発光部10の両方を消灯させる消灯期間Toffとを有するように、第1発光部9および第2発光部10の周期的な点消灯制御を行うと共に、一定周期TN内のパルス数変調制御により、第1発光部9および第2発光部10の点灯制御を行うことを特徴とする。   The control circuit 6 includes a lighting period Ton for turning on and off the first light emitting unit 9 and the second light emitting unit 10 in a complementary manner, and a lighting off period Toff for turning off both the first light emitting unit 9 and the second light emitting unit 10. As described above, the periodic light on / off control of the first light emitting unit 9 and the second light emitting unit 10 is performed, and the lighting control of the first light emitting unit 9 and the second light emitting unit 10 is performed by the pulse number modulation control within the fixed period TN. It is characterized by performing.

更に具体的に、本発明の第3の実施の形態に係る照明装置は、図7(a)に示す第1の実施の形態と同様に、互いに色温度の異なる第1発光部9および第2発光部10と、第1発光部9および第2発光部10の点消灯制御を行う制御回路6とを備える。  More specifically, the illuminating device according to the third embodiment of the present invention is similar to the first embodiment shown in FIG. 7A in that the first light emitting unit 9 and the second light emitting unit 9 having different color temperatures from each other. The light emission part 10 and the control circuit 6 which performs lighting on / off control of the 1st light emission part 9 and the 2nd light emission part 10 are provided.

制御回路6は、図7(b)に示す第1の実施の形態と同様に、第1発光部9と第2発光部10を相補的に点消灯させる点灯期間Tonと、第1発光部9と第2発光部10の両方を消灯させる消灯期間Toffとを有するように、第1発光部9および第2発光部10の周期的な点消灯制御を行う点消灯制御部3と、一定周期TN内のパルス数変調制御により、第1発光部9および第2発光部10の点灯制御を行うパルス数変調制御部7を備えることを特徴とする。  Similarly to the first embodiment shown in FIG. 7B, the control circuit 6 includes a lighting period Ton that complementarily turns on and off the first light emitting unit 9 and the second light emitting unit 10, and the first light emitting unit 9. And a turn-on / off control unit 3 that performs periodic on / off control of the first light-emitting unit 9 and the second light-emitting unit 10 so as to have a light-off period Toff that turns off both the light-emitting unit 10 and the second light-emitting unit 10; The pulse number modulation control part 7 which performs lighting control of the 1st light emission part 9 and the 2nd light emission part 10 by the pulse number modulation control of the inside is provided.

また、本発明の第3の実施の形態に係る照明装置は、図20に示すように、点消灯制御部3は、更に、輝度制御信号SIに応じて、所定の点消灯周期T内における点灯期間Tonと消灯期間Toffとの比率を可変制御すると共に、パルス数変調制御部7も、更に、輝度制御信号SIに応じて、一定周期TN内のパルス数変調制御により、第1発光部9および第2発光部10の点灯制御を行うことを特徴とする。  Further, in the illumination device according to the third embodiment of the present invention, as shown in FIG. 20, the lighting / light-out control unit 3 further turns on / off within a predetermined lighting / light-off cycle T according to the luminance control signal SI. In addition to variably controlling the ratio of the period Ton and the extinguishing period Toff, the pulse number modulation control unit 7 further controls the first light emitting unit 9 and the pulse number modulation control within the fixed period TN according to the luminance control signal SI. The lighting control of the second light emitting unit 10 is performed.

更に具体的に、本発明の第3の実施の形態に係る照明装置は、図7(a)に示す第1の実施の形態と同様に、互いに色温度の異なる第1発光ダイオードLED1および第2発光ダイオードLED2と、第1発光ダイオードLED1および第2発光ダイオードLED2の点消灯制御を行う制御回路6とを備える。  More specifically, the lighting device according to the third embodiment of the present invention is similar to the first embodiment shown in FIG. 7A in that the first light-emitting diodes LED1 and the second light-emitting diodes LED1 and second having different color temperatures are used. The light emitting diode LED2 and a control circuit 6 that controls turning on / off of the first light emitting diode LED1 and the second light emitting diode LED2 are provided.

制御回路6は、図7(b)に示す第1の実施の形態と同様に、第1発光ダイオードLED1と第2発光ダイオードLED2を相補的に点消灯させる点灯期間Tonと、第1発光ダイオードLED1と第2発光ダイオードLED2の両方を消灯させる消灯期間Toffとを有するように、第1発光ダイオードLED1および第2発光ダイオードLED2の周期的な点消灯制御を行う点消灯制御部3と、一定周期TN内のパルス数変調制御により、第1発光ダイオードLED1および第2発光ダイオードLED2の点灯制御を行うパルス数変調制御部7とを備えることを特徴とする。   As in the first embodiment shown in FIG. 7B, the control circuit 6 includes a lighting period Ton for turning on and off the first light emitting diode LED1 and the second light emitting diode LED2 in a complementary manner, and the first light emitting diode LED1. And a turn-on / off control unit 3 that performs periodic turning-on / off control of the first light-emitting diode LED1 and the second light-emitting diode LED2 so as to have both a light-off period Toff for turning off both the light-emitting diode LED2 and the second light-emitting diode LED2; And a pulse number modulation control unit 7 that performs lighting control of the first light emitting diode LED1 and the second light emitting diode LED2 by the pulse number modulation control.

また、本発明の第3の実施の形態に係る照明装置において、図20に示すように、点消灯制御部3は、輝度制御信号SIに応じて、所定の点消灯周期T内における点灯期間Tonと消灯期間Toffとの比率を可変制御すると共に、パルス数変調制御部7も、輝度制御信号SIに応じて、一定周期TN内のパルス数変調制御により、第1発光ダイオードLED1および第2発光ダイオードLED2の点灯制御を行うことを特徴とする。  Moreover, in the illuminating device according to the third embodiment of the present invention, as shown in FIG. 20, the lighting on / off control unit 3 performs the lighting period Ton within a predetermined lighting on / off cycle T according to the luminance control signal SI. The pulse number modulation control unit 7 also controls the first light emitting diode LED1 and the second light emitting diode by pulse number modulation control within a fixed period TN according to the luminance control signal SI. The LED 2 is controlled to be turned on.

図20は、本発明の第3の実施の形態に係る照明装置において、照明光の輝度調整動作の例を説明するための図であって、輝度制御信号SIに応じて、所定の点消灯周期T内における点灯期間Tonと消灯期間Toffとの比率を可変制御し、照明光の輝度を下げる場合には、点消灯周期Tに対して点灯期間Tonが占める比率(第1発光部LED1および第2発光部LED2を合わせたトータルのオンデューティ)を順次下げて設定(図20(a)→図20(b)→図20(c))し、逆に、照明光の輝度を上げる場合には、トータルのオンデューティを順次上げて設定(図20(c)→図20(b)→図20(a))する。  FIG. 20 is a diagram for explaining an example of the luminance adjustment operation of the illumination light in the illumination device according to the third embodiment of the present invention, in which a predetermined lighting / extinction cycle is determined according to the luminance control signal SI. When the ratio of the lighting period Ton and the extinguishing period Toff in T is variably controlled to reduce the luminance of the illumination light, the ratio of the lighting period Ton to the lighting / extinguishing period T (the first light emitting unit LED1 and the second light emitting unit LED1). When the total on-duty of the light emitting unit LED2 is sequentially reduced and set (FIG. 20 (a) → FIG. 20 (b) → FIG. 20 (c)), on the contrary, when increasing the luminance of the illumination light, The total on-duty is sequentially increased and set (FIG. 20 (c) → FIG. 20 (b) → FIG. 20 (a)).

図21は、本発明の第3の実施の形態に係る照明装置において、点消灯周期Tに対して点灯期間Tonが占める比率に応じた輝度変化を説明するための図である。  FIG. 21 is a diagram for explaining the luminance change according to the ratio of the lighting period Ton to the lighting cycle T in the lighting apparatus according to the third embodiment of the present invention.

図20(a)乃至(c)の符号S1,S2は、スイッチング制御信号S1,S2の論理状態、すなわち、LED1,LED2の点消灯状態を各々示している。   Reference numerals S1 and S2 in FIGS. 20A to 20C indicate the logical states of the switching control signals S1 and S2, that is, the on / off states of the LEDs 1 and 2, respectively.

図21は、点消灯周期T(Ton+Toff)に対して点灯期間Tonが占める比率に応じた輝度変化を説明するための図である。   FIG. 21 is a diagram for explaining the change in luminance according to the ratio of the lighting period Ton to the lighting cycle T (Ton + Toff).

図21に示すように、トータルのオンデューティが低いほど、照明光の輝度は低くなり、逆に、トータルのオンデューティが高いほど、照明光の輝度は高くなる。  As shown in FIG. 21, the lower the total on-duty, the lower the luminance of the illumination light. Conversely, the higher the total on-duty, the higher the luminance of the illumination light.

なお、上記の点消灯周期Tについては、肉眼でちらつきを感じない長さ(例えば、数100ms程度)に設定すればよい。   Note that the lighting cycle T may be set to a length that does not cause flickering with the naked eye (for example, about several hundred ms).

本発明の第3の実施の形態に係る照明装置においては、第1の実施の形態に係る照明装置と同様に、点灯期間Ton内におけるLED1の点灯期間T1、およびLED2の点灯期間T2のON波形は、パルス数変調制御によって、一定周期TN内のパルス数が減少化され、オフ期間を完全に0にすることができ、輝度を0に調整可能である。  In the lighting device according to the third embodiment of the present invention, as in the lighting device according to the first embodiment, the ON waveform of the lighting period T1 of LED1 and the lighting period T2 of LED2 within the lighting period Ton. In the pulse number modulation control, the number of pulses in the fixed period TN is reduced, the off period can be completely zero, and the luminance can be adjusted to zero.

本発明の第3の実施の形態に係る照明装置においては、点灯期間Ton内における第1発光部LED1の点灯期間T1と第2発光部LED2の点灯期間T2との比率を適宜選択することにより、照明光の輝度には何ら影響を及ぼすことなく、照明光の色度を任意に調整することが可能となり、また、消灯期間Toffの長さ、または、点消灯周期T内における点灯期間Tonと消灯期間Toffとの比率を適宜選択することにより、照明光の色度には何ら影響を及ぼすことなく、照明光の輝度を任意に調整することが可能となる。   In the lighting device according to the third embodiment of the present invention, by appropriately selecting the ratio between the lighting period T1 of the first light emitting unit LED1 and the lighting period T2 of the second light emitting unit LED2 within the lighting period Ton, It is possible to arbitrarily adjust the chromaticity of the illumination light without affecting the luminance of the illumination light, and the length of the extinguishing period Toff or the lighting period Ton and the extinction period within the lighting cycle T By appropriately selecting the ratio with the period Toff, the luminance of the illumination light can be arbitrarily adjusted without affecting the chromaticity of the illumination light.

また、本発明の第3の実施の形態に係る照明装置においては、照明光の色度制御および輝度制御は、第1発光部LED1および第2発光部LED2の駆動電流制御を伴わないので、制御回路6における制御を容易に実現することが可能となる。  Further, in the lighting device according to the third embodiment of the present invention, the chromaticity control and luminance control of the illumination light are not accompanied by the drive current control of the first light emitting unit LED1 and the second light emitting unit LED2, and thus control is performed. Control in the circuit 6 can be easily realized.

本発明に係る照明装置によれば、簡易な構成で、照明光の色度と輝度を、0〜100%の広範囲に調整することができる。  According to the illumination device of the present invention, the chromaticity and luminance of illumination light can be adjusted over a wide range of 0 to 100% with a simple configuration.

[その他の実施の形態]
上記のように、本発明は第1乃至第3の実施の形態によって記載したが、この開示の一部をなす論述および図面はこの発明を限定するものであると理解すべきではない。この開示から当業者には様々な代替実施の形態、実施例および運用技術が明らかとなろう。
[Other embodiments]
As described above, the present invention has been described according to the first to third embodiments. However, it should not be understood that the description and drawings constituting a part of this disclosure limit the present invention. From this disclosure, various alternative embodiments, examples and operational techniques will be apparent to those skilled in the art.

例えば、図1のバイポーラトランジスタQ1、Q2に代えて、MOS(Metal Oxide Semiconductor)型、MIS(Metal Insulator Semiconductor)型などの電界効果トランジスタ(FET:Field Effect Transistor)用いてもよい。また、図1の抵抗R1,R2に代えて、定電流源を用いてもよい。   For example, a field effect transistor (FET) such as a MOS (Metal Oxide Semiconductor) type or a MIS (Metal Insulator Semiconductor) type may be used instead of the bipolar transistors Q1 and Q2 of FIG. Further, a constant current source may be used instead of the resistors R1 and R2 in FIG.

このように、本発明はここでは記載していない様々な実施の形態などを含むことは勿論である。したがって、本発明の技術的範囲は上記の説明から妥当な特許請求の範囲に係る発明特定事項によってのみ定められるものである。  As described above, the present invention naturally includes various embodiments that are not described herein. Therefore, the technical scope of the present invention is defined only by the invention specifying matters according to the scope of claims reasonable from the above description.

本発明の実施の形態に係る照明装置は、液晶ディスプレイのバックライトをはじめとして、LED無影灯、リビング室内灯、化粧灯、ショーウィンドウの照明灯、広告の照明灯、美術館における照明灯、さらに医療用として、外科手術時の照明灯など、種々の用途で用いられる照明装置全般に好適な技術である。   An illumination device according to an embodiment of the present invention includes a backlight of a liquid crystal display, an LED shadowless lamp, a living room lamp, a makeup lamp, a show window lamp, an advertisement lamp, a museum lamp, It is a technique suitable for general lighting devices used for various purposes such as illumination lamps during surgical operations for medical purposes.

本発明の第1の実施の形態に係る照明装置の模式的基本回路ブロック構成図。The typical basic circuit block block diagram of the illuminating device which concerns on the 1st Embodiment of this invention. 本発明の第1の実施の形態に係る照明装置に適用する発光ダイオード(LED1、LED2)の模式的縦断面構造図。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic longitudinal sectional view of a light emitting diode (LED1, LED2) applied to a lighting device according to a first embodiment of the present invention. 国際照明委員会(CIE)1931によるXYZ表色系のXY色度図。XY chromaticity diagram of XYZ color system by International Lighting Commission (CIE) 1931. XY色度図上において、LEDの選定方法を説明する模式図。The schematic diagram explaining the selection method of LED on XY chromaticity diagram. 白色LEDにおいて、相対光度と順方向電流IF(mA)の関係の特性の一例を示す図。In the white LED, it illustrates an example of a characteristic of the relationship between relative light and the forward current I F (mA). 白色LEDにおいて、色度図と順方向電流IF(mA)の関係の特性の一例を示す図。In the white LED, it illustrates an example of a characteristic of the relationship between the chromaticity diagram and the forward current I F (mA). 本発明の第1の実施の形態に係る照明装置において、(a)LEDモジュールに対する制御系の模式的回路ブロック構成図、(b)制御回路の模式的ブロック構成図。In the illuminating device which concerns on the 1st Embodiment of this invention, (a) The typical circuit block block diagram of the control system with respect to an LED module, (b) The typical block block diagram of a control circuit. 本発明の第1の実施の形態の変形例に係る照明装置において、(a)リモート制御系の模式的ブロック構成図、(b)輝度調整用ボリューム抵抗(RVI)および色温度調整用ボリューム抵抗(RVT)からなるボリューム抵抗による制御系の模式図。In the lighting device according to the modification of the first embodiment of the present invention, (a) a schematic block configuration diagram of a remote control system, (b) a luminance adjusting volume resistor (RVI) and a color temperature adjusting volume resistor ( The schematic diagram of the control system by the volume resistance which consists of RVT. 本発明の第1の実施の形態に係る照明装置において、明るさ調整用および色温度調整用ボリューム抵抗制御系の模式図。The schematic diagram of the volume resistance control system for brightness adjustment and color temperature adjustment in the illuminating device which concerns on the 1st Embodiment of this invention. 本発明の第1の実施の形態に係る照明装置において、(a)PNM出力信号PSTおよびPSIを得るための模式的回路ブロック構成図、(b)PNM出力信号PSTの模式的波形図、(c)PNM出力信号PSIの模式的波形図。In the lighting apparatus according to the first embodiment of the present invention, (a) a schematic circuit block diagram for obtaining the PNM output signals PST and PSI, (b) a schematic waveform diagram of the PNM output signal PST, (c) ) A schematic waveform diagram of the PNM output signal PSI. 本発明の第1の実施の形態に係る照明装置において、PNM出力信号の説明図であって、(a)100%の明るさを得る場合のPNM波形図、(b)複数個のパルス数を減少させた場合のPNM波形図、(c)照度とPNMのOFF区間数との関係を示す模式図。In the illuminating device which concerns on the 1st Embodiment of this invention, it is explanatory drawing of a PNM output signal, Comprising: (a) PNM waveform figure in the case of obtaining the brightness of 100%, (b) The number of several pulses PNM waveform diagram in the case of decreasing, (c) a schematic diagram showing the relationship between the illuminance and the number of PNM OFF sections. 本発明の第1の実施の形態に係る照明装置において、色温度の異なるLED列を2個隣接させて実装する場合のLED駆動回路系の模式的回路ブロック構成図。The schematic circuit block block diagram of the LED drive circuit system in the case of mounting 2 LED rows from which color temperature differs adjacently in the illuminating device which concerns on the 1st Embodiment of this invention. 本発明の第1の実施の形態に係る照明装置において、色温度の異なるLED列を2個隣接させ、かつn組配列して実装する場合の模式的回路ブロック構成図。FIG. 3 is a schematic circuit block configuration diagram in the case where two LED arrays having different color temperatures are adjacently mounted and arranged in n groups in the lighting device according to the first embodiment of the present invention. 本発明の第1の実施の形態に係る照明装置において、色温度の異なるLED列を2個隣接配置し、かつn組配列して実装する場合の模式的配置図であって、(a)ライン状の照明装置の構成図、(b)円形状の照明装置の構成図。FIG. 2 is a schematic layout diagram in the case where two LED rows having different color temperatures are arranged adjacently and arranged in an n-group arrangement in the lighting device according to the first embodiment of the present invention. The block diagram of a cylindrical illumination device, (b) The block diagram of a circular illumination device. 本発明の第1の実施の形態に係る照明装置において、照明光の色度調整動作を説明するための図であって、(a)点灯期間Ton(=T1+T2)に対して、T1<T2の例、(b)T1=T2の例、(c)T1>T2の例。In the illuminating device which concerns on the 1st Embodiment of this invention, it is a figure for demonstrating the chromaticity adjustment operation | movement of illumination light, Comprising: (a) It is T1 <T2 with respect to lighting period Ton (= T1 + T2). Example, (b) Example of T1 = T2, (c) Example of T1> T2. 本発明の第1の実施の形態に係る照明装置において、点灯期間Ton(=T1+T2)に対してLED2の点灯期間T2が占める比率に応じた色温度変化を説明するための図。The figure for demonstrating the color temperature change according to the ratio which the lighting period T2 of LED2 occupies with respect to the lighting period Ton (= T1 + T2) in the illuminating device which concerns on the 1st Embodiment of this invention. 本発明の第1の実施の形態に係る照明装置において、点灯期間Ton(=T1+T2)に対してLED2の点灯期間T2が占める比率に応じた色度変化を説明するための色度図。The chromaticity diagram for demonstrating the chromaticity change according to the ratio which the lighting period T2 of LED2 occupies with respect to lighting period Ton (= T1 + T2) in the illuminating device which concerns on the 1st Embodiment of this invention. 本発明の第2の実施の形態に係る照明装置において、照明光の輝度調整動作の一例を説明するための図であって、点灯期間Tonの長さを一定に維持する一方、輝度制御信号に応じて、消灯期間Toffの長さを可変制御し、照明光の輝度を下げる場合には、消灯期間Toffを順次長く設定(図18(a)→図18(b)→図18(c))し、照明光の輝度を上げる場合には、消灯期間Toffを順次短く設定(図18(c)→図18(b)→図18(a))する様子を説明する図。In the illuminating device which concerns on the 2nd Embodiment of this invention, it is a figure for demonstrating an example of the brightness adjustment operation | movement of illumination light, Comprising: While maintaining the length of the lighting period Ton constant, it is a brightness | luminance control signal. Accordingly, when the length of the extinguishing period Toff is variably controlled and the luminance of the illumination light is lowered, the extinguishing period Toff is set to be sequentially longer (FIG. 18 (a) → FIG. 18 (b) → FIG. 18 (c)). Then, in the case of increasing the luminance of the illumination light, a diagram for explaining a state in which the turn-off period Toff is set to be sequentially shortened (FIG. 18C → FIG. 18B → FIG. 18A). 本発明の第2の実施の形態に係る照明装置において、消灯期間Toffの長さに応じた輝度変化およびPNM制御の効果を説明するための図。The figure for demonstrating the effect of the brightness | luminance change according to the length of the light extinction period Toff, and PNM control in the illuminating device which concerns on the 2nd Embodiment of this invention. 本発明の第3の実施の形態に係る照明装置において、照明光の輝度調整動作の別の例を説明するための図であって、輝度制御信号に応じて、所定の点消灯周期T内における点灯期間Tonと消灯期間Toffとの比率を可変制御し、照明光の輝度を下げる場合には、点消灯周期Tに対して点灯期間Tonが占める比率(第1発光部LED1および第2発光部LED2を合わせたトータルのオンデューティ)を順次下げて設定(図20(a)→図20(b)→図20(c))し、逆に、照明光の輝度を上げる場合には、トータルのオンデューティを順次上げて設定(図20(c)→図20(b)→図208(a))する様子を説明する図。In the illuminating device which concerns on the 3rd Embodiment of this invention, it is a figure for demonstrating another example of the brightness | luminance adjustment operation | movement of illumination light, Comprising: It is within the predetermined lighting / extinction period T according to a brightness | luminance control signal. When the ratio of the lighting period Ton and the extinguishing period Toff is variably controlled to reduce the luminance of the illumination light, the ratio of the lighting period Ton to the lighting / extinguishing period T (the first light emitting unit LED1 and the second light emitting unit LED2) When the brightness of the illumination light is increased, the total on-duty) is set by lowering sequentially (FIG. 20 (a) → FIG. 20 (b) → FIG. 20 (c)). The figure explaining a mode that a duty is raised and set up sequentially (Drawing 20 (c)-> Drawing 20 (b)-> Drawing 208 (a)). 本発明の第3の実施の形態に係る照明装置において、点消灯周期Tに対して点灯期間Tonが占める比率に応じた輝度変化を説明するための図。The figure for demonstrating the luminance change according to the ratio which the lighting period Ton occupies with respect to the lighting / extinction period T in the illuminating device which concerns on the 3rd Embodiment of this invention. 従来例に係る照明装置の模式的ブロック構成図。The typical block block diagram of the illuminating device which concerns on a prior art example.

符号の説明Explanation of symbols

1…青色発光ダイオード
2…蛍光層
2a…赤色発光体
2b…緑色発光体
2c…樹脂
3…点消灯制御部
4…ADコンバータ
5…カウンタ回路
6…制御回路
7…PNM制御部
8…LED駆動用バイポーラトランジスタ(Q1,Q2)
9…第1発光ダイオード(第1発光部)
10…第2発光ダイオード(第2発光部)
11…LEDモジュール
12…輝度調整用抵抗(RI)
13…色温度調整用抵抗(RT)
14…リモート制御部
15…受信部
16…リモート制御回路
17…リモートスイッチ部
18…輝度調整用リモートスイッチ
19…色温度調整用リモートスイッチ
20…輝度調整用ボリューム抵抗(RVI)
21…色温度調整用ボリューム抵抗(RVT)
22…ボリューム抵抗
24…三端子レギュレータ
26…マイクロコンピュータ
28…水晶発信器
30…LED駆動回路
32…LED駆動用バイポーラトランジスタ(QD)
40,40−1,40−2,…,40―n…第1LED列
50,50−1,50−2,…,50−n…第2LED列
LED1…第1発光部(第1白色発光ダイオード)
LED2…第2発光部(第2白色発光ダイオード)
R1,R2…抵抗
T…点消灯期間(=Ton+Toff)
Ton…点灯期間(=T1+T2)
Toff…消灯期間
T1…点灯期間Ton内におけるLED1の点灯期間(LED2の消灯期間)
T2…点灯期間Ton内におけるLED2の点灯期間(LED1の消灯期間)
TN…PNM制御における一定周期
DESCRIPTION OF SYMBOLS 1 ... Blue light emitting diode 2 ... Phosphor layer 2a ... Red light emitter 2b ... Green light emitter 2c ... Resin 3 ... Light-off control part 4 ... AD converter 5 ... Counter circuit 6 ... Control circuit 7 ... PNM control part 8 ... LED drive Bipolar transistors (Q1, Q2)
9 ... 1st light emitting diode (1st light emission part)
10 ... 2nd light emitting diode (2nd light emission part)
11 ... LED module 12 ... Brightness adjustment resistor (RI)
13. Color temperature adjustment resistor (RT)
DESCRIPTION OF SYMBOLS 14 ... Remote control part 15 ... Reception part 16 ... Remote control circuit 17 ... Remote switch part 18 ... Remote switch 19 for brightness adjustment ... Remote switch 20 for color temperature adjustment ... Volume resistance (RVI) for brightness adjustment
21 ... Voltage resistor for color temperature adjustment (RVT)
22 ... Volume resistor 24 ... Three-terminal regulator 26 ... Microcomputer 28 ... Crystal oscillator 30 ... LED drive circuit 32 ... LED drive bipolar transistor (QD)
40, 40-1, 40-2,..., 40-n... 1st LED array 50, 50-1, 50-2,..., 50-n 2nd LED array LED1. )
LED2 ... 2nd light emission part (2nd white light emitting diode)
R1, R2 ... resistance T ... light-off period (= Ton + Toff)
Ton: lighting period (= T1 + T2)
Toff ... Turn-off period T1 ... Turn on LED1 within lighting period Ton (Turn-off period of LED2)
T2: LED2 lighting period within the lighting period Ton (LED1 extinguishing period)
TN: Fixed period in PNM control

Claims (20)

互いに色温度の異なる第1発光部および第2発光部と、
第1発光部および第2発光部の点消灯制御を行う制御回路と
を備え、
前記制御回路は、前記第1発光部と前記第2発光部を相補的に点消灯させる点灯期間と、前記第1発光部と前記第2発光部の両方を消灯させる消灯期間とを有するように、前記第1発光部および前記第2発光部の周期的な点消灯制御を行うと共に、一定周期内のパルス数変調制御により、前記第1発光部および前記第2発光部の点灯制御を行うことを特徴とする照明装置。
A first light emitting part and a second light emitting part having different color temperatures,
A control circuit that performs turning on / off control of the first light emitting unit and the second light emitting unit,
The control circuit has a lighting period in which the first light emitting unit and the second light emitting unit are turned on and off in a complementary manner, and a lighting period in which both the first light emitting unit and the second light emitting unit are turned off. In addition to performing periodic on / off control of the first light emitting unit and the second light emitting unit, lighting control of the first light emitting unit and the second light emitting unit is performed by pulse number modulation control within a certain period. A lighting device characterized by the above.
請求項1記載の照明装置において、
前記制御回路は、色度制御信号に応じて、前記点灯期間内における第1発光部の点灯期間と第2発光部の点灯期間との比率を可変制御すると共に、前記一定周期内のパルス数変調制御により、前記第1発光部および前記第2発光部の点灯制御を行うことを特徴とする請求項1に記載の照明装置。
The lighting device according to claim 1.
The control circuit variably controls the ratio between the lighting period of the first light emitting unit and the lighting period of the second light emitting unit within the lighting period according to a chromaticity control signal, and modulates the number of pulses within the fixed period. The lighting device according to claim 1, wherein lighting control of the first light emitting unit and the second light emitting unit is performed by the control.
請求項1または2に記載の照明装置において、
前記制御回路は、前記点灯期間の長さを一定に維持する一方、輝度制御信号に応じて、前記消灯期間の長さを可変制御すると共に、前記一定周期内のパルス数変調制御により、前記第1発光部および前記第2発光部の点灯制御を行うことを特徴とする照明装置。
The lighting device according to claim 1 or 2,
The control circuit maintains the length of the lighting period constant, and variably controls the length of the extinguishing period according to a luminance control signal, and controls the number of pulses by modulation of the number of pulses within the fixed period. An illumination device that performs lighting control of one light emitting unit and the second light emitting unit.
請求項1または2に記載の照明装置において、
前記制御回路は、輝度制御信号に応じて、所定の点消灯周期内における前記点灯期間と前記消灯期間との比率を可変制御すると共に、前記一定周期内のパルス数変調制御により、前記第1発光部および前記第2発光部の点灯制御を行うことを特徴とする照明装置。
The lighting device according to claim 1 or 2,
The control circuit variably controls a ratio between the lighting period and the extinguishing period in a predetermined lighting / extinction period according to a luminance control signal, and performs the first light emission by pulse number modulation control in the fixed period. And a lighting device for controlling lighting of the second light emitting unit.
請求項1乃至4のいずれかに記載の照明装置において、
前記第1発光部および前記第2発光部は、
青色光を発する青色発光ダイオードと、
前記青色発光ダイオードを被覆する蛍光層と
をそれぞれ備え、
前記蛍光層は、前記青色光に励起されて赤色光、緑色光を各々発する赤色蛍光体と緑色蛍光体、若しくは、前記青色光に励起されて黄色光を発する黄色蛍光体を均一に混合した透明樹脂を有することを特徴とする照明装置。
In the illuminating device in any one of Claims 1 thru | or 4,
The first light emitting unit and the second light emitting unit are:
A blue light emitting diode emitting blue light;
A fluorescent layer covering the blue light emitting diode,
The phosphor layer is a transparent mixture in which red phosphor and green phosphor emitting red light and green light respectively when excited by the blue light, or yellow phosphor emitting yellow light when excited by the blue light are uniformly mixed. A lighting device comprising a resin.
互いに色温度の異なる第1発光部および第2発光部と、
第1発光部および第2発光部の点消灯制御を行う制御回路と
を備え、
前記制御回路は、
前記第1発光部と前記第2発光部を相補的に点消灯させる点灯期間と、前記第1発光部と前記第2発光部の両方を消灯させる消灯期間とを有するように、前記第1発光部および前記第2発光部の周期的な点消灯制御を行う点消灯制御部と、
一定周期内のパルス数変調制御により、前記第1発光部および前記第2発光部の点灯制御を行うパルス数変調制御部を備えることを特徴とする照明装置。
A first light emitting part and a second light emitting part having different color temperatures,
A control circuit that performs turning on / off control of the first light emitting unit and the second light emitting unit,
The control circuit includes:
The first light emission has a lighting period in which the first light emitting part and the second light emitting part are turned on and off in a complementary manner, and a light emitting period in which both the first light emitting part and the second light emitting part are turned off. A lighting on / off control unit that performs periodic lighting on / off control of the unit and the second light emitting unit,
An illumination device comprising: a pulse number modulation control unit that performs lighting control of the first light emitting unit and the second light emitting unit by pulse number modulation control within a fixed period.
請求項6記載の照明装置において、
前記点消灯制御部は、更に、色度制御信号に応じて、前記点灯期間内における第1発光部の点灯期間と第2発光部の点灯期間との比率を可変制御すると共に、
前記パルス数変調制御部も、更に、前記色度制御信号に応じて、一定周期内のパルス数変調制御により、前記第1発光部および前記第2発光部の点灯制御を行うことを特徴とする照明装置。
The lighting device according to claim 6.
The lighting on / off control unit further variably controls the ratio between the lighting period of the first light emitting unit and the lighting period of the second light emitting unit in the lighting period according to the chromaticity control signal,
The pulse number modulation control unit also performs lighting control of the first light emitting unit and the second light emitting unit by pulse number modulation control within a certain period according to the chromaticity control signal. Lighting device.
請求項6または7に記載の照明装置において、
前記点消灯制御部は、更に、前記点灯期間の長さを一定に維持する一方、輝度制御信号に応じて、前記消灯期間の長さを可変制御すると共に、
前記パルス数変調制御部も、更に、前記輝度制御信号に応じて、一定周期内のパルス数変調制御により、前記第1発光部および前記第2発光部の点灯制御を行うことを特徴とする照明装置。
The lighting device according to claim 6 or 7,
The lighting on / off control unit further maintains a constant length of the lighting period, while variably controlling the length of the lighting period according to a luminance control signal,
The pulse number modulation control unit also performs lighting control of the first light emitting unit and the second light emitting unit by pulse number modulation control within a predetermined period according to the luminance control signal. apparatus.
請求項6または7に記載の照明装置において、
前記点消灯制御部は、更に、輝度制御信号に応じて、所定の点消灯周期内における前記点灯期間と前記消灯期間との比率を可変制御すると共に、
前記パルス数変調制御部も、更に、前記輝度制御信号に応じて、一定周期内のパルス数変調制御により、前記第1発光部および前記第2発光部の点灯制御を行うことを特徴とする照明装置。
The lighting device according to claim 6 or 7,
The lighting on / off control unit further variably controls the ratio between the lighting period and the lighting period within a predetermined lighting / extinction cycle according to a luminance control signal,
The pulse number modulation control unit also performs lighting control of the first light emitting unit and the second light emitting unit by pulse number modulation control within a predetermined period according to the luminance control signal. apparatus.
請求項6乃至9のいずれかに記載の照明装置において、
前記第1発光部および前記第2発光部は、
青色光を発する青色発光ダイオードと、
前記青色発光ダイオードを被覆する蛍光層と
をそれぞれ備え、
前記蛍光層は、前記青色光に励起されて赤色光、緑色光を各々発する赤色蛍光体と緑色蛍光体、若しくは、前記青色光に励起されて黄色光を発する黄色蛍光体を均一に混合した透明樹脂を有することを特徴とする照明装置。
In the illuminating device in any one of Claims 6 thru | or 9,
The first light emitting unit and the second light emitting unit are:
A blue light emitting diode emitting blue light;
A fluorescent layer covering the blue light emitting diode,
The phosphor layer is a transparent mixture in which red phosphor and green phosphor emitting red light and green light respectively when excited by the blue light, or yellow phosphor emitting yellow light when excited by the blue light are uniformly mixed. A lighting device comprising a resin.
互いに色温度の異なる第1発光ダイオードおよび第2発光ダイオードと、
第1発光ダイオードおよび第2発光ダイオードの点消灯制御を行う制御回路と
を備え、
前記制御回路は、前記第1発光ダイオードと前記第2発光ダイオードを相補的に点消灯させる点灯期間と、前記第1発光ダイオードと前記第2発光ダイオードの両方を消灯させる消灯期間とを有するように、前記第1発光ダイオードおよび前記第2発光ダイオードの周期的な点消灯制御を行う点消灯制御部と、一定周期内のパルス数変調制御により、前記第1発光ダイオードおよび前記第2発光ダイオードの点灯制御を行うパルス数変調制御部とを備えることを特徴とする照明装置。
A first light emitting diode and a second light emitting diode having different color temperatures,
A control circuit for controlling turning on / off of the first light emitting diode and the second light emitting diode,
The control circuit has a lighting period in which the first light emitting diode and the second light emitting diode are complementarily turned on and off, and a lighting period in which both the first light emitting diode and the second light emitting diode are turned off. The on / off control unit that performs periodic on / off control of the first light emitting diode and the second light emitting diode, and the lighting of the first light emitting diode and the second light emitting diode by pulse number modulation control within a certain period An illumination device comprising: a pulse number modulation control unit that performs control.
請求項11に記載の照明装置において、
前記点消灯制御部は、更に、色度制御信号に応じて、前記点灯期間内における第1発光ダイオード部の点灯期間と第2発光部の点灯期間との比率を可変制御すると共に、
前記パルス数変調制御部も、更に、前記色度制御信号に応じて、一定周期内のパルス数変調制御により、前記第1発光ダイオードおよび前記第2発光ダイオードの点灯制御を行うことを特徴とする照明装置。
The lighting device according to claim 11.
The lighting on / off control unit further variably controls the ratio of the lighting period of the first light emitting diode unit and the lighting period of the second light emitting unit in the lighting period according to the chromaticity control signal,
The pulse number modulation control unit further performs lighting control of the first light emitting diode and the second light emitting diode by pulse number modulation control within a certain period according to the chromaticity control signal. Lighting device.
請求項11または12に記載の照明装置において、
前記点消灯制御部は、更に、前記点灯期間の長さを一定に維持する一方、輝度制御信号に応じて、前記消灯期間の長さを可変制御すると共に、
前記パルス数変調制御部も、更に、前記輝度制御信号に応じて、一定周期内のパルス数変調制御により、前記第1発光ダイオードおよび前記第2発光ダイオードの点灯制御を行うことを特徴とする照明装置。
The lighting device according to claim 11 or 12,
The lighting on / off control unit further maintains a constant length of the lighting period, while variably controlling the length of the lighting period according to a luminance control signal,
The pulse number modulation control unit also performs lighting control of the first light emitting diode and the second light emitting diode by pulse number modulation control within a predetermined period in accordance with the luminance control signal. apparatus.
請求項11または12に記載の照明装置において、
前記点消灯制御部は、更に、輝度制御信号に応じて、所定の点消灯周期内における前記点灯期間と前記消灯期間との比率を可変制御すると共に、
前記パルス数変調制御部も、更に、前記輝度制御信号に応じて、一定周期内のパルス数変調制御により、前記第1発光ダイオードおよび前記第2発光ダイオードの点灯制御を行うことを特徴とする照明装置。
The lighting device according to claim 11 or 12,
The lighting on / off control unit further variably controls the ratio between the lighting period and the lighting period within a predetermined lighting / extinction cycle according to a luminance control signal,
The pulse number modulation control unit also performs lighting control of the first light emitting diode and the second light emitting diode by pulse number modulation control within a predetermined period in accordance with the luminance control signal. apparatus.
請求項11乃至14のいずれかに記載の照明装置において、
前記第1発光ダイオードおよび前記第2発光ダイオードは、
青色光を発する青色発光ダイオードと、
前記青色発光ダイオードを被覆する蛍光層と
をそれぞれ備え、
前記蛍光層は、前記青色光に励起されて赤色光、緑色光を各々発する赤色蛍光体と緑色蛍光体、若しくは、前記青色光に励起されて黄色光を発する黄色蛍光体を均一に混合した透明樹脂を有することを特徴とする照明装置。
The lighting device according to any one of claims 11 to 14,
The first light emitting diode and the second light emitting diode are:
A blue light emitting diode emitting blue light;
A fluorescent layer covering the blue light emitting diode,
The phosphor layer is a transparent mixture in which red phosphor and green phosphor emitting red light and green light respectively when excited by the blue light, or yellow phosphor emitting yellow light when excited by the blue light are uniformly mixed. A lighting device comprising a resin.
請求項11乃至15のいずれかに記載の照明装置において、
前記第1発光ダイオードおよび前記第2発光ダイオードは、互いに隣接して配置したことを特徴とする照明装置。
In the illuminating device in any one of Claims 11 thru | or 15,
The lighting device, wherein the first light emitting diode and the second light emitting diode are disposed adjacent to each other.
請求項11乃至15のいずれかに記載の照明装置において、
前記第1発光ダイオードおよび前記第2発光ダイオードは、互いに隣接して配置し、かつ複数組配列して実装することを特徴とする照明装置。
In the illuminating device in any one of Claims 11 thru | or 15,
The lighting device, wherein the first light emitting diode and the second light emitting diode are disposed adjacent to each other and arranged in a plurality of sets.
請求項11乃至15のいずれかに記載の照明装置において、
前記第1発光ダイオードおよび前記第2発光ダイオードは、互いに隣接して配置し、かつ複数組ライン状に配列して実装することを特徴とする照明装置。
In the illuminating device in any one of Claims 11 thru | or 15,
The lighting device, wherein the first light emitting diode and the second light emitting diode are arranged adjacent to each other and arranged in a plurality of sets of lines.
請求項11乃至15のいずれかに記載の照明装置において、
前記第1発光ダイオードおよび前記第2発光ダイオードは、互いに隣接して配置し、かつ複数組円形状に配列して実装することを特徴とする照明装置。
In the illuminating device in any one of Claims 11 thru | or 15,
The lighting device, wherein the first light emitting diode and the second light emitting diode are arranged adjacent to each other and arranged in a plurality of sets of circles.
請求項11乃至19のいずれかに記載の照明装置において、
前記第1発光ダイオードの色温度は、2500K〜3000K、前記第2発光ダイオードの色温度は、3000K〜6500Kの範囲に含まれることを特徴とする照明装置。
The lighting device according to any one of claims 11 to 19,
The color temperature of the first light emitting diode is in a range of 2500K to 3000K, and the color temperature of the second light emitting diode is in a range of 3000K to 6500K.
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