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    • 92. 发明专利
    • Lighting device and luminaire
    • 照明设备和灯具
    • JP2013201137A
    • 2013-10-03
    • JP2013108674
    • 2013-05-23
    • Toshiba Lighting & Technology Corp東芝ライテック株式会社
    • USAMI TOMOKAZUTERASAKA HIROSHIOTAKE HIROKAZUKUBOTA HIROSHI
    • H05B37/02H01L33/00
    • Y02B20/42
    • PROBLEM TO BE SOLVED: To provide a lighting device which, when an arc discharge occurs, detects it and makes determination quickly and surely with high reliability, and a luminaire.SOLUTION: The lighting device comprises: a DC power supply DCS having a load circuit LC connected thereto; load state detection means LD which detects an electrical quantity corresponding to a load state; storage means MR which stores therein the electrical quantity corresponding to the lighting state of the load circuit LC as reference data; arithmetic means ALU which, upon reading the reference data out of the storage means MR, compares it with the detection result of the load state detection means LD and, if there is a difference in electrical quantity against a predetermined voltage between the reference data and the detection result, determines that an arc discharge has occurred; and a safety circuit SC which, when the arithmetic means determined that an arc discharge occurred, stops or reduces output of the DC power supply.
    • 要解决的问题:提供一种当电弧放电发生时,可以快速,可靠地进行检测并确定的照明装置以及照明装置。照明装置包括:具有负载电路的DC电源DCS LC连接; 检测对应于负载状态的电量的负载状态检测装置LD; 存储装置MR,其中存储与负载电路LC的点亮状态相对应的电量作为参考数据; 算术装置ALU,在从存储装置MR读取参考数据之后,将其与负载状态检测装置LD的检测结果进行比较,并且如果在参考数据和参考数据之间存在电量与预定电压之间的差异 检测结果确定发生电弧放电; 以及当算术装置确定发生电弧放电时停止或减少直流电源的输出的安全电路SC。
    • 93. 发明专利
    • Lighting circuit and lighting device
    • 照明电路和照明设备
    • JP2013201019A
    • 2013-10-03
    • JP2012068466
    • 2012-03-23
    • Toshiba Lighting & Technology Corp東芝ライテック株式会社
    • NAKAJIMA HIROMICHITSUJI TOSHIOKAMATA MASAHIKOOTAKE HIROKAZUSAITO YOSUKE
    • H05B37/02H05B41/26
    • H05B33/0887Y02B20/341
    • PROBLEM TO BE SOLVED: To provide a lighting device that does not malfunction even if a capacitive element is connected as a load.SOLUTION: A lighting circuit of an embodiment includes a first power circuit, a first detection circuit, a first control circuit and a first protection circuit. The first power circuit is powered by a first power supply to output a DC current. The first detection circuit detects a current flowing between the first power circuit and an output terminal. The first control circuit compares a first detection value detected by the first detection circuit with a reference value, and controls the first power circuit. The first protection circuit is connected to the first detection circuit to implement a lower first detection value when the current flows in the opposite direction to a first direction that is the direction of the DC current output from the first power circuit than when the current flows in the first direction.
    • 要解决的问题:提供即使电容元件作为负载连接也不会发生故障的照明装置。解决方案:实施例的照明电路包括第一电源电路,第一检测电路,第一控制电路和 第一保护电路。 第一电源电路由第一电源供电以输出直流电流。 第一检测电路检测在第一电源电路和输出端子之间流动的电流。 第一控制电路将由第一检测电路检测的第一检测值与参考值进行比较,并控制第一电源电路。 第一保护电路连接到第一检测电路,以当电流沿与第一电源电路输出的直流电流的方向相反的第一方向相反的方向流动时,比当电流流入时,实现较低的第一检测值 第一个方向。
    • 94. 发明专利
    • Led lighting device and illuminating fixture
    • LED照明装置和照明装置
    • JP2013196758A
    • 2013-09-30
    • JP2012058994
    • 2012-03-15
    • Toshiba Lighting & Technology Corp東芝ライテック株式会社
    • OTAKE HIROKAZU
    • H05B37/02
    • PROBLEM TO BE SOLVED: To provide an LED lighting device capable of detecting arcs with certainty, and protecting a light source part with certainty.SOLUTION: A DC power supply device 22 has a pair of output lines 38 and 39. A light source part 16 has a pair of power lines 35 and 36 connected to the pair of output lines 38 and 39 of the DC power supply device 22 while being substantially short-circuited. The light source part 16 has a light-emitting diode D electrically connected between the power lines 35 and 36, and emitting light by a DC current outputted from the DC power supply device 22. A detection circuit 23 has a detection line 45 electrically connected to the power line 35 of the light source part 16, and detects arcs on the basis of a potential difference between the output line 38 and the power line 35, and a predetermined reference potential. A protection circuit 24 reduces or stops an output of the DC power supply device 22 when the detection circuit 23 detects arcs.
    • 要解决的问题:提供一种能够确定地检测电弧的LED照明装置,并且确实地保护光源部。解决方案:直流电源装置22具有一对输出线38和39.一个光源部分16 具有连接到直流电源装置22的一对输出线38和39的一对电源线35和36,同时基本上短路。 光源部16具有电连接在电力线35和36之间的发光二极管D,并且通过从直流电源装置22输出的直流电流发光。检测电路23具有电连接到 光源部分16的电源线35,并且基于输出线38和电力线35之间的电位差和预定参考电位来检测电弧。 当检测电路23检测到电弧时,保护电路24减少或停止直流电源装置22的输出。
    • 95. 发明专利
    • Power supply for illumination, and illuminating fixture
    • 电源用于照明和照明设备
    • JP2013186944A
    • 2013-09-19
    • JP2012048593
    • 2012-03-05
    • Toshiba Lighting & Technology Corp東芝ライテック株式会社
    • OTAKE HIROKAZUSASAI TOSHIHIKOKOBAYASHI KATSUYUKI
    • H05B37/02
    • H05B33/0845H05B33/0815
    • PROBLEM TO BE SOLVED: To provide a power supply for illumination and an illuminating device, capable of controlling an output current by a dimmer with accuracy.SOLUTION: A power supply for illumination according to an embodiment comprises a detection circuit and a control circuit. The detection circuit compares a phase-controlled AC voltage with a first threshold voltage to detect change of a conduction state of the phase control in the AC voltage, and compares the AC voltage with a second threshold voltage lower than the first threshold voltage to detect a zero cross of the AC voltage, and thereby, detects a conduction time period of the phase control. The control circuit outputs an output current depending on a length of the conduction time period.
    • 要解决的问题:提供一种用于照明和照明装置的电源,其能够精确地控制调光器的输出电流。解决方案:根据实施例的用于照明的电源包括检测电路和控制电路。 检测电路将相位控制的交流电压与第一阈值电压进行比较,以检测交流电压中的相位控制的导通状态的变化,并将交流电压与低于第一阈值电压的第二阈值电压进行比较,以检测 交流电压的零交叉,从而检测相位控制的导通时间。 控制电路根据导通时间段的长度输出输出电流。
    • 96. 发明专利
    • Power-factor improvement circuit and power-supply device
    • 功率因数改进电路和电源设备
    • JP2013138549A
    • 2013-07-11
    • JP2011287727
    • 2011-12-28
    • Toshiba Lighting & Technology Corp東芝ライテック株式会社
    • KITAMURA NORIYUKITAKAHASHI YUJIOTAKE HIROKAZU
    • H02M7/12
    • H02M1/4225H02M3/135H02M3/1563Y02B70/126
    • PROBLEM TO BE SOLVED: To provide a power-factor improvement circuit with improved power factor at the time of light load, and a power-supply circuit.SOLUTION: There is provided a power-factor improvement circuit including an inductor, a switching element, a constant-current element, a feedback coil, and a control circuit. The switching element is connected in series to one end of the inductor, performs switching operation repeating an on-state and an off-state when an input voltage inputted to the other end of the inductor is relatively high, and continues the on-state to pass an input current into the inductor when the input voltage is relatively low. The constant-current element is connected in series to the switching element and limits a current of the switching element. The feedback coil is magnetically coupled to the inductor, and supplies a voltage to a control terminal of the switching element to control the switching element. The control circuit controls a constant-current value of the constant-current element according to the input voltage.
    • 要解决的问题:提供一种功率因数改善电路,其在轻负载时具有改善的功率因数和电源电路。解决方案:提供了一种功率因数改善电路,其包括电感器,开关元件, 恒流元件,反馈线圈和控制电路。 开关元件与电感器的一端串联连接,当输入到电感器的另一端的输入电压较高时,进行重复接通状态和截止状态的开关动作,并且继续导通状态 当输入电压相对较低时,将输入电流传递到电感器中。 恒流元件与开关元件串联连接并限制开关元件的电流。 反馈线圈磁耦合到电感器,并且向开关元件的控制端子提供电压以控制开关元件。 控制电路根据输入电压控制恒流元件的恒定电流值。
    • 97. 发明专利
    • Led power supply device, and illuminating device
    • LED电源装置和照明装置
    • JP2013125730A
    • 2013-06-24
    • JP2011275577
    • 2011-12-16
    • Toshiba Lighting & Technology Corp東芝ライテック株式会社
    • KUDO HIROYUKIOTAKE HIROKAZU
    • H05B37/02
    • PROBLEM TO BE SOLVED: To provide an LED power supply device capable of suppressing variation in power consumption of an LED load, and to provide an illuminating device having this LED power supply device.SOLUTION: An LED power supply device 1 has: a DC output generation circuit 2 outputting a DC voltage depending on an on-off operation of a switching element Q1; an LED load 3 connected between outputs of the DC output generation circuit 2; and control means 5 performing control so that an output of the DC output generation circuit 2 satisfies a control formula by on-off controlling the switching element Q1 depending on a total value of a detection voltage value of a load voltage of the LED load 3 and a detection current value of a load current of the LED load 3. The control formula is represented as output voltage=-a*output current+constant. Here, a is set to a value larger than a value obtained by dividing the load voltage of the LED load 3 in full lighting by a double of the load current.
    • 要解决的问题:提供一种能够抑制LED负载的功耗变化的LED电源装置,并提供具有该LED电源装置的照明装置。 解决方案:LED电源装置1具有:DC输出发生电路2,其根据开关元件Q1的通断动作输出DC电压; 连接在直流输出发生电路2的输出端之间的LED负载3; 以及控制装置5,执行控制,使得DC输出发生电路2的输出通过根据LED负载3的负载电压的检测电压值的总值通过开关控制开关元件Q1而满足控制公式,以及 LED负载的负载电流的检测电流值3.控制公式表示为输出电压= -a *输出电流+常数。 这里,将a设定为大于通过将LED负载3的负载电压在充分点亮时除以负载电流的两倍而获得的值。 版权所有(C)2013,JPO&INPIT
    • 100. 发明专利
    • Led lighting device, luminaire, and lighting control system
    • LED照明装置,灯管和照明控制系统
    • JP2012160284A
    • 2012-08-23
    • JP2011017791
    • 2011-01-31
    • Toshiba Lighting & Technology Corp東芝ライテック株式会社
    • OTAKE HIROKAZU
    • H05B37/02
    • PROBLEM TO BE SOLVED: To provide an LED lighting device arranged so that a phase control element of a phase control type dimmer can be prevented from being brought out of conduction even when an instantaneous voltage drop occurs in a source voltage, a luminaire having the LED lighting device, and a lighting control system having the luminaire.SOLUTION: An LED lighting device 1 comprises: a phase control type dimmer 8; an AC-to-DC converter circuit 2 having a rectifier 11 to which an AC voltage from the phase control type dimmer 8 is input, and a smoothing capacitor C1 connected between outputs of the rectifier 11; a current regulator circuit 3 operable to convert a DC voltage output by the AC-to-DC converter circuit 2 into a DC voltage according to the AC voltage input to the rectifier 11; a bypass circuit 5 connected between the outputs of the rectifier 11, and formed so as to be capable of causing a current equal to or higher than a holding current to flow through a phase control element 13 of the phase control type dimmer 8; and a drive circuit 6 operable to detect an instantaneous voltage drop of the AC voltage input to the rectifier 11, and operate the bypass circuit 5 according to the instantaneous voltage drop.
    • 要解决的问题:为了提供一种LED照明装置,其布置成使得即使在源极电压中发生瞬时电压降,也可以防止相位控制型调光器的相位控制元件导通,照明器 具有LED照明装置,以及具有该照明装置的照明控制系统。 解决方案:LED照明装置1包括:相位控制型调光器8; 具有来自相位控制型调光器8的交流电压的整流器11的AC-DC转换器电路2和连接在整流器11的输出端之间的平滑电容器C1; 电流调节器电路3,其可操作以根据输入到整流器11的AC电压将由AC-DC转换器电路2输出的DC电压转换为DC电压; 连接在整流器11的输出端之间并形成为能够使等于或高于保持电流的电流流过相位控制型调光器8的相位控制元件13的旁路电路5; 以及驱动电路6,用于检测输入到整流器11的AC电压的瞬时电压降,并根据瞬时电压降操作旁路电路5。 版权所有(C)2012,JPO&INPIT