WO2019075923A1 - 基于led灯组分段调光的线性电源 - Google Patents
基于led灯组分段调光的线性电源 Download PDFInfo
- Publication number
- WO2019075923A1 WO2019075923A1 PCT/CN2017/119903 CN2017119903W WO2019075923A1 WO 2019075923 A1 WO2019075923 A1 WO 2019075923A1 CN 2017119903 W CN2017119903 W CN 2017119903W WO 2019075923 A1 WO2019075923 A1 WO 2019075923A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- led lamp
- segment
- dimming
- pin
- integrated chip
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
Definitions
- the invention relates to the field of LED modules, in particular to a linear power supply based on dimming of component segments of LED lamps.
- the linear power supply especially the dimmable segmented linear power supply driving scheme introduced by the latter chip company, has simple circuit, few devices, low cost, and full production. It is popular in the LED dimming market for the SMD process, easy integration of lamp bead circuits, low production pass rate and low defect rate.
- the linear power supply has implemented multi-stage conduction technology. Improve power conversion efficiency / LED light efficiency, but the light effect still can not meet the actual lighting use, while the current segmentation dimming technology due to the unreasonable layout of each segment of the LED, seriously affecting the dimming effect.
- the technical problem to be solved by the present invention is to provide a linear power supply based on the dimming of the LED lamp component segments capable of improving the dimming light shape effect and improving the light effect.
- the technical solution adopted by the present invention to solve the technical problem thereof is: constructing a linear power supply based on dimming of the component segments of the LED lamp, comprising an AC power supply, a rectifying circuit, a segmentation dimming integrated chip disposed on the integrated lamp board, and a multi-segment LED lamp group connected in series by electrical connection, each of the LED lamp groups includes a plurality of serially connected LED lamp beads, and each of the LED lamp beads is evenly distributed, and the first pin of the AC power source Connected to the first pin of the rectifier circuit and provide an alternating high voltage to the rectifier circuit, the second pin of the alternating current power source is connected to the second pin of the rectifier circuit, and is provided to the rectifier circuit AC low-voltage reference level, the third pin of the rectifier circuit is respectively connected to the first pin of the segment dimming integrated chip and the positive pole of the first segment LED lamp group, and is integrated for the segment dimming
- the chip and the anode of the first LED lamp group provide a rectified DC
- each of the LED lamp groups is arranged around the geometric center of the integrated lamp panel on the integrated lamp panel. .
- the first body light board, the alternating current power source, the rectifying circuit, the segment dimming integrated chip and the multi-segment LED lamp group are all welded in the SMD manner. Attached to the heat sink.
- the heat dissipation plate is an aluminum substrate.
- a thyristor dimmer is further included, and the thyristor dimmer is connected to the alternating current power source.
- the linear power supply based on the dimming of the LED lamp component segments of the present invention has the following beneficial effects: including an AC power supply, a rectifying circuit, a segmentation dimming integrated chip disposed on the integrated lamp board, and a series connection electrical connection
- the multi-segment LED lamp group includes a plurality of LED lamp beads connected in series, and a negative electrode of the first LED lamp group and a first segment switch pin and a second of the segment dimming integrated chip respectively
- the anode of the segment LED lamp group is connected, and the cathode of the previous segment of the LED lamp group is respectively connected with the corresponding segment switch pin of the segment dimming integrated chip and the anode of the subsequent segment of the LED lamp group, and the negative pole of the last segment of the LED lamp group is
- the corresponding segment switch pin connection of the segment dimming integrated chip the number of LED lamp beads included in the latter segment of the LED lamp group is smaller than the number of LED lamp beads included in the previous segment of the LED lamp group, and the invention adopts
- FIG. 1 is a schematic structural view of an embodiment of a linear power supply based on dimming of a component segment of an LED lamp according to the present invention
- FIG. 2 is a schematic view showing the arrangement of LED lamp groups on the integrated lamp board in the embodiment
- 3 is a waveform diagram of electrical signals of the first segment of the LED lamp group in the embodiment.
- FIG. 4 is a waveform diagram of electrical signals of a second segment of the LED lamp group in the embodiment.
- Figure 5 is a waveform diagram of electrical signals of the third segment of the LED lamp set in the embodiment.
- Figure 6 is a waveform diagram of electrical signals of the nth segment of the LED lamp set in the embodiment.
- the linear power supply based on the dimming of the LED lamp component segments is shown in FIG. 1 .
- the linear power supply based on the dimming of the LED lamp component section comprises an AC power supply 11 disposed on the integrated lamp board, a rectifier circuit 12, a segmented dimming integrated chip U1, and a plurality of segments of LEDs connected in series.
- the lamp group, the body light board, the AC power source 11, the rectifier circuit 12, the segment dimming integrated chip U1, and the multi-segment LED lamp group are all commonly soldered to the heat dissipation plate by SMD, and the heat dissipation plate is usually an aluminum substrate.
- an n-segment LED lamp group is shown as an example, which is a first segment LED lamp group M1, a second segment LED lamp group M2, a third segment LED lamp group M3, ..., an n-th segment LED lamp group Mn.
- Each segment of the LED lamp group includes a plurality of LED lamp beads connected in series, where n is a non-zero natural number, wherein the AC power source 11 is provided for the current voltage signal to supply power to the rectifier circuit 12; the rectifier circuit 12 is segmented dimming
- the integrated chip U1 and the multi-segment LED lamp set provide the peak supply voltage of the DC cycle, which provides energy support.
- the first pin of the AC power source 11 is connected to the first pin of the rectifier circuit 12, and provides an AC high voltage to the rectifier circuit.
- the second pin of the AC power source 11 is connected to the second pin of the rectifier circuit 12, and is connected to the rectifier circuit. 12 provides an AC low voltage reference level.
- the third pin of the rectifier circuit 12 is respectively connected to the first pin of the segment dimming integrated chip U1 and the anode of the first segment LED lamp group M1, and is a segment dimming integrated chip U1 and a first segment LED lamp group.
- the positive pole of M1 provides a rectified DC high voltage signal (the rectified voltage waveform is a peak waveform), and the fourth pin of the rectifier circuit 12 is respectively connected to the second pin of the segment dimming integrated chip U1, and is segmented dimming
- the integrated chip U1 provides a rectified DC low-voltage reference level signal (the rectified voltage waveform is a peak waveform).
- the internal portion of the segmented dimming integrated chip U1 uses an electronic switching device to control the switching of each segment of the switch pin.
- the switch pins are the first segment switch pin H1 and the second segment switch pin H2 segment.
- the third segment of the switch pin H3, ..., the nth segment of the switch pin Hn; and each segment of the electronic switch pin response to the rectified supply voltage F1, F2, F3, ..., Fn (F1, F2, F3, ... ..., Fn is the influence of the minimum voltage threshold required for the conduction of different segments of the switch pins, and the specific response correspondence is: when the supply voltage of the rectifier circuit 12 is greater than or equal to the minimum required for a certain switch pin to be turned on.
- the corresponding segment switch pins of the segment dimming integrated chip U1 are turned on. Specifically, when the power supply voltage of the rectifier circuit 12 is ⁇ F1, the first segment switch pin H1 is turned on, and the other segment switch pins are not turned on; and so on, when the power supply voltage of the rectifier circuit 12 is ⁇ F2, the second The segment switch pin H2 is turned on, and the other segment switch pins are not turned on, and when the supply voltage of the rectifier circuit 12 is ⁇ Fn, the nth segment switch pin Hn is turned on, and the other segment switch pins are not turned on;
- the connection relationship with the LED lamp bead is: the first segment switch pin H1 is connected to the first segment LED lamp group M1, the second segment switch pin H2 is connected to the second segment LED lamp group M2, ..., the nth segment switch The pin Hn is connected to the n-th LED lamp group Mn.
- the negative poles of the first segment of the LED lamp group M1 are respectively connected to the positive poles of the first segment switch pin H1 and the second segment LED lamp group M2 of the segment dimming integrated chip U1, and the segment dimming integrated chip U1 Providing a current conduction loop channel for the first LED lamp group M1; a cathode of the second LED lamp group M2 is connected to a second segment switch pin H2 of the segment dimming integrated chip U1, and the segment dimming integrated chip U1 is The second LED lamp group M2 provides a current conduction loop channel; and so on, the negative poles of the previous segment of the LED lamp group are respectively connected to the corresponding segment switch pins of the segment dimming integrated chip U1 and the positive electrode of the subsequent segment of the LED lamp group.
- the negative pole of the last segment of the LED lamp group is connected with the corresponding segment switch pin of the segment dimming integrated chip U1; in FIG. 1, the nth segment LED lamp group Mn is the last segment of the LED lamp group, and the nth segment of the LED lamp group Mn
- the negative electrode is connected to the nth segment switch pin of the segment dimming integrated chip U1, and the segment dimming integrated chip U1 provides a current conduction loop channel for the nth segment LED lamp group Mn.
- the number of LED lamp beads included in the LED lamp group in the latter segment is smaller than the number of LED lamp beads included in the LED lamp group in the previous segment.
- the first LED lamp group M1 is composed of L1, L2, ..., Ln and other LED lamp bead series, and the LED lamp bead is evenly distributed among the LED lamp beads, and the first segment of the LED lamp group M1 is LED lamp.
- the number of beads is A1;
- the second LED lamp group M2 is composed of LED lamp beads such as Ln+1, Ln+2, pipingLn+n, and the LED lamp bead is evenly distributed among the LED lamps.
- the number of LED lamp beads in the second LED lamp group M2 is A2; the third segment LED lamp group M3 is composed of L2n+1, L2n+2, ..., L2n+n and the like, and the LED lamp bead is arranged in series. , the LED lamp beads are evenly distributed, the number of LED lamp beads in the third segment LED lamp group M3 is A3; the third segment LED lamp group Mn is LED lamps L3n+1, L3n+2, ..., L3n+n, etc. The bead is connected in series, and the LED lamp bead is evenly distributed among the LED lamp beads.
- the number of LED lamp beads in the nth segment of the LED lamp group Mn is An, A1>A2>A3>...An.
- the invention realizes the maximization of the efficiency of the segmentation dimming integrated chip U1 by adjusting the number of LED lamp beads inside each segment of the LED lamp group and the position layout of each segment of the LED lamp group.
- Each segment of the voltage input by the rectifier circuit 12 determines the switching action of each segment of the segmentation dimming integrated chip U1, and the minimum required for the first segment of the switch pin H1 of the segmented dimming integrated chip U1 to be turned on.
- the voltage threshold F1 is the smallest, and the second segment switch pin H2, the third segment switch pin H3, ..., the nth segment switch pin Hn segment are respectively second.
- the voltage varies with the periodicity of the rectifier circuit 12
- the segment dimming integrated chip U1 starts to turn on each switch pin, so the current maintenance time of the LED lamp group is arranged in the first segment of the LED lamp group M1, the second segment of the LED lamp group M2, the third segment LED lamp group M3, ..., the n-th segment LED lamp group Mn; by adjusting the number of LED lamp beads connected in series inside the LED lamp group, the number of LED lamp beads in the first segment LED lamp group M1 is the largest, the second segment LED lamp group M2, third segment LED lamp group M3, ..., the n-th segment LED lamp group Mn is second, to make the LED lamp bead more utilized, improve the light efficiency of the integrated lamp board, and the LED lamp bead is reasonable.
- the layout also enhances the dimming effect.
- the invention is directed to the problem that the linear segmentation dimming driving LED lamp has low conversion efficiency/low luminous efficiency and limited optical shape difference in the conventional technology, and in the case of cost control, according to the circuit principle and the actual lamp structure, the LED lamp bead is distributed and Layout, improve conversion efficiency / light efficiency, maximize the use of LED lamp beads, and at the same time through the reasonable layout of the position of each segment of LED lights, you can improve the dimming effect.
- each of the LED lamp groups is arranged around the geometric center of the integrated lamp board on the integrated lamp board.
- the LED light groups from the inside to the outside are the first LED light group M1, the second LED light group M2, the third LED light group M3, ..., the nth LED light group Mn, wherein each LED
- the corresponding number of LED lamp beads contained in the lamp group are respectively A1, A2, A3, ..., An, and A1>A2>A3>...An.
- the linear power supply based on the dimming of the LED lamp component segment further includes a thyristor dimmer (not shown), the thyristor dimmer is connected to the AC power source 11, and the thyristor dimmer Adjusting the brightness change of each segment of the LED lamp group can be controlled.
- the thyristor dimmer is up-regulated, and the integrated lamp board slowly and downwardly adjusts the thyristor dimmer from the inside out.
- the integrated light board is darkened from the outside to the inside, it is dark like a flower.
- the setting method of this LED light group is adjusted.
- the number of LED lamp beads of the first segment LED lamp group M1 and the second segment LED lamp group M2 of the inner ring is large, there is no shadow and brightness gradient during the up-regulation process, and the n-th segment of the outer ring when the adjustment is performed.
- the number of LED lamp beads of the LED lamp group Mn is small, and the process of extinction from the outside to the inside is not caused by the small number of peripheral LED lamp beads, and the number of LED lamp beads of the LED lamp group of the inner ring is benefited. More, the compensation of the light in the outer circle, the dimming will be soft and gradual, just like the light of the oil is slowly dimming, reasonable and reasonable; no matter where From a point of view, it is all about beauty.
- FIG. 3 is an electric signal waveform diagram of the first LED lamp group in the embodiment.
- B1 is a current waveform of the first segment LED lamp group M1
- C1 is a rectified voltage waveform.
- 4 is an electric signal waveform diagram of the second LED lamp group in the embodiment
- B2 is a current waveform of the second LED lamp group M2
- C2 is a rectified voltage waveform.
- FIG. 5 is a waveform diagram of electrical signals of the third LED lamp group in the embodiment
- B3 is a current waveform of the third LED lamp group M3, and C3 is a rectified voltage waveform.
- 6 is an electric signal waveform diagram of the n-th LED lamp group in the embodiment
- Bn is a current waveform of the n-th LED lamp group M3, and Cn is a rectified voltage waveform.
- each segment of the segmented dimming integrated chip has a switch pin H1, H2, H3, ..., Hn.
- the minimum voltage thresholds required are F1, F2, F3, ..., Fn (Fn>...>F3>F2>F1), so the first segment of the LED lamp group M1 is the segment with the longest on-time, M2. M3, ..., Mn are sequentially shortened, and the number of LED lamp beads in each of the LED lamp groups M1, M2, M3, ..., Mn is assigned to A1, A2 by using the LED lamp bead distribution method of the present invention.
- the LED lamp bead can be made more utilized by the invention, and the conversion efficiency of the power source drive and the light effect of the whole lamp lamp are improved.
- the present invention fully solves the problem of low conversion efficiency and poor overall light efficiency in a conventional technology by reasonably evenly distributing the number of LED lamp beads in each segment of the LED lamp group and the position layout of each segment of the LED lamp group.
- the lamp bead is fully utilized to avoid the increase in cost, that is, by increasing the number of LED lamp beads to achieve the purpose of light effect, and also to solve the problem that the number and position distribution of the LED lamp bead in the LED lamp group are poorly arranged during dimming, resulting in poor layout.
- the light is dimmed, the brightness around the lamp is uneven, resulting in a shadow problem. While improving the light efficiency, it also improves the dimming effect of the lamps.
- the lack of external segmentation dimming integrated chip U1 drive from the outside makes the integrated light board more popular, widely used in production and used in the market.
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
一种基于LED灯组分段调光的线性电源，包括设在一体化灯板上的交流电源(11)、整流电路(12)、分段调光集成芯片(U1)及以串接电气方式连接的多段LED灯组(M1,M2,M3,…,Mn)，每段LED灯组(M1,M2,M3,…,Mn)包括若干个串接的LED灯珠，整流电路(12)的第三、四引脚与分段调光集成芯片(U1)的第一、二引脚连接，第一段LED灯组(M1)的负极与分段调光集成芯片(U1)的第一段开关引脚(H1)和第二段LED灯组(M2)正极连接，前一段LED灯组的负极与分段调光集成芯片(U1)相应开关引脚和后一段LED灯组的正极连接，最后一段LED灯组(Mn)的负极与分段调光集成芯片(U1)的相应段开关引脚连接；后一段LED灯组中所含LED灯珠的数量小于前一段LED灯组中所含LED灯珠的数量。能提升调光光形效果、提高光效。
Description
本发明涉及LED模组领域，特别涉及一种基于LED灯组分段调光的线性电源。
在现有流行的可控硅调光电源驱动方案电路中，线性电源尤其是后面芯片公司推出来的可调光分段线性电源驱动方案，由于存在电路简单、器件较少、成本便宜、生产全为SMD工艺、易实现灯珠电路一体化、生产通过率和不良率低的优势，在LED调光市场上甚受欢迎；但是受技术的局限性影响，线性电源虽然实行了多段导通技术来提高电源转换效率/LED光效，但光效仍然不能满足实际照明使用，同时目前的分段调光技术由于各段LED布局的不合理，严重影响调光效果。
发明内容
本发明要解决的技术问题在于，针对现有技术的上述缺陷，提供一种能提升调光光形效果、提高光效的基于LED灯组分段调光的线性电源。
本发明解决其技术问题所采用的技术方案是：构造一种基于LED灯组分段调光的线性电源，包括设置在一体化灯板上的交流电源、整流电路、分段调光集成芯片以及以串接电气方式连接的多段LED灯组，每段所述LED灯组均包括若干个串接的LED灯珠，每个所述LED灯珠间均匀分布，所述交流电源的第一引脚与所述整流电路的第一引脚连接、并向所述整流电路提供交流高压，所述交流电源的第二引脚与所述整流电路的第二引脚连接、并向所述整流电路提供交流低压参考电平，所述整流电路的第三引脚分别与所述分段调光集成芯片的第一引脚和第一段LED灯组的正极连接、并为所述分段调光集成芯片及所述第一段LED灯组的正极提供整流后的直流高压信号，所述整流电路的第四引脚分别与所述分段调光集成芯片的第二引脚连接、并为所述分段调光集成芯片提供 整流后的直流低压参考电平信号，所述第一段LED灯组的负极分别与所述分段调光集成芯片的第一段开关引脚和第二段LED灯组的正极连接，前一段LED灯组的负极均分别与所述分段调光集成芯片的相应段开关引脚和后一段LED灯组的正极连接，最后一段LED灯组的负极与所述分段调光集成芯片的相应段开关引脚连接；所述后一段LED灯组中所含LED灯珠的数量小于所述前一段LED灯组中所含LED灯珠的数量。
在本发明所述的基于LED灯组分段调光的线性电源中，每段所述LED灯组在所述一体化灯板上均以所述一体化灯板的几何中心为中心围绕排布。
在本发明所述的基于LED灯组分段调光的线性电源中，当所述整流电路的供电电压大于或等于某一段开关引脚导通所需的最小电压阈值时，所述分段调光集成芯片的相应段开关引脚导通。
在本发明所述的基于LED灯组分段调光的线性电源中，所述一化体灯板、交流电源、整流电路、分段调光集成芯片和多段LED灯组均以SMD方式共同焊贴于散热板上。
在本发明所述的基于LED灯组分段调光的线性电源中，所述散热板为铝基板。
在本发明所述的基于LED灯组分段调光的线性电源中，还包括可控硅调光器，所述可控硅调光器连接所述交流电源。
实施本发明的基于LED灯组分段调光的线性电源，具有以下有益效果：由于包括设置在一体化灯板上的交流电源、整流电路、分段调光集成芯片以及以串接电气方式连接的多段LED灯组，每段LED灯组均包括若干个串接的LED灯珠，第一段LED灯组的负极分别与所述分段调光集成芯片的第一段开关引脚和第二段LED灯组的正极连接，前一段LED灯组的负极均分别与分段调光集成芯片的相应段开关引脚和后一段LED灯组的正极连接，最后一段LED灯组的负极与所述分段调光集成芯片的相应段开关引脚连接；后一段LED灯组中所含LED灯珠的数量小于前一段LED灯组中所含LED灯珠的数量，本发明采用改变每段LED灯组中LED灯珠的数量及每段LED灯组在灯板上的实际位置，利用分段调光集成芯片，取长补短，来实现电源转换效率及LED光效，从而能提升调光光形效果、提高光效。
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明基于LED灯组分段调光的线性电源一个实施例中的结构示意图；
图2为所述实施例中一体化灯板上LED灯组的排布示意图；
图3为所述实施例中第一段LED灯组的电信号波形图；
图4为所述实施例中第二段LED灯组的电信号波形图；
图5为所述实施例中第三段LED灯组的电信号波形图；
图6为所述实施例中第n段LED灯组的电信号波形图。
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
在本发明基于LED灯组分段调光的线性电源实施例中，该基于LED灯组分段调光的线性电源的结构示意图如图1所示。图1中，该基于LED灯组分段调光的线性电源包括设置在一体化灯板上的交流电源11、整流电路12、分段调光集成芯片U1以及以串接电气方式连接的多段LED灯组，一化体灯板、交流电源11、整流电路12、分段调光集成芯片U1和多段LED灯组均以SMD方式共同焊贴于散热板上，该散热板通常为铝基板。
图1中作为例子画出了n段LED灯组，分别为第一段LED灯组M1、第二段LED灯组M2、第三段LED灯组M3、……、第n段LED灯组Mn，每段LED灯组均包括若干个串接的LED灯珠，n为非零自然数，其中，交流电源11为电流电压信号提供处，为整流电路12提供电源；整流电路12为分段调光集成芯 片U1和多段LED灯组提供直流周期变化的波峰供电电压，即为其提供能量支持。
交流电源11的第一引脚与整流电路12的第一引脚连接、并向整流电路提供交流高压，交流电源11的第二引脚与整流电路12的第二引脚连接、并向整流电路12提供交流低压参考电平。整流电路12的第三引脚分别与分段调光集成芯片U1的第一引脚和第一段LED灯组M1的正极连接，并为分段调光集成芯片U1及第一段LED灯组M1的正极提供整流后的直流高压信号(整流后电压波形为峰波形)，整流电路12的第四引脚分别与分段调光集成芯片U1的第二引脚连接，并为分段调光集成芯片U1提供整流后的直流低压参考电平信号(整流后电压波形为峰波形)。
本实施例中，分段调光集成芯片U1的内部运用电子开关器件控制每一段的开关引脚导通，这些开关引脚分别为第一段开关引脚H1、第二段开关引脚H2段、第三段开关引脚H3、……、第n段开关引脚Hn；且每段电子开关引脚响应受整流供电电压F1、F2、F3、……、Fn(F1、F2、F3、……、Fn分别为不同段开关引脚导通所需的最小电压阈值)的影响，其具体响应对应关系为：当整流电路12的供电电压大于或等于某一段开关引脚导通所需的最小电压阈值时，分段调光集成芯片U1的相应段开关引脚导通。具体的，当整流电路12的供电电压≥F1时，第一段开关引脚H1导通，其他段开关引脚不导通；以此类推，当整流电路12的供电电压≥F2时，第二段开关引脚H2导通，其他段开关引脚不导通，依次至当整流电路12的供电电压≥Fn时，第n段开关引脚Hn导通，其他段开关引脚不导通；其与LED灯珠的连接关系为：第一段开关引脚H1与第一段LED灯组M1相连、第二段开关引脚H2与第二段LED灯组M2相连、……、第n段开关引脚Hn与第n段LED灯组Mn相连。
本实施例中，第一段LED灯组M1的负极分别与分段调光集成芯片U1的第一段开关引脚H1和第二段LED灯组M2的正极连接，分段调光集成芯片U1为第一段LED灯组M1提供电流导通回路通道；第二段LED灯组M2的负极与分段调光集成芯片U1的第二段开关引脚H2相连，分段调光集成芯片U1为第二段LED灯组M2提供电流导通回路通道；以此类推，前一段LED灯组的负极均分别与分段调光集成芯片U1的相应段开关引脚和后一段LED灯组的正极连 接，最后一段LED灯组的负极与分段调光集成芯片U1的相应段开关引脚连接；图1中，第n段LED灯组Mn是最后一段LED灯组，第n段LED灯组Mn的负极与分段调光集成芯片U1的第n段开关引脚连接，分段调光集成芯片U1为第n段LED灯组Mn提供电流导通回路通道。
本实施例中，后一段LED灯组中所含LED灯珠的数量小于前一段LED灯组中所含LED灯珠的数量。具体的，第一段LED灯组M1由L1、L2、……、Ln等LED灯珠串联构成，LED灯珠布局时，各LED灯珠间均匀分布，第一段LED灯组M1中LED灯珠的数量为A1；第二段LED灯组M2由Ln+1、Ln+2、.....Ln+n等LED灯珠串联构成，LED灯珠布局时，各LED灯珠间均匀分布，第二段LED灯组M2中LED灯珠的数量为A2；第三段LED灯组M3由L2n+1、L2n+2、……、L2n+n等灯珠串联构成，LED灯珠布局时，各LED灯珠间均匀分布，第三段LED灯组M3中LED灯珠的数量为A3；第三段LED灯组Mn由L3n+1、L3n+2、……、L3n+n等LED灯珠串联构成，LED灯珠布局时，各LED灯珠间均匀分布，第n段LED灯组Mn中LED灯珠的数量为An，A1>A2>A3>……An。
本发明通过调整各段LED灯组内部的LED灯珠的数量及对各段LED灯组进行位置布局，来实现分段调光集成芯片U1的效率最大化。每段受整流电路12进来的电压大小值来决定分段调光集成芯片U1每段开关引脚的开关动作，分段调光集成芯片U1的第一段开关引脚H1导通所需的最小电压阈值F1最小，第二段开关引脚H2、第三段开关引脚H3、……、第n段开关引脚Hn段分别次之。由于第一段LED灯组M1、第二段LED灯组M2、第三段LED灯组M3、……、第n段LED灯组Mn间串联方式连接，随着整流电路12过来的周期变化电压的波动，分段调光集成芯片U1每段开关引脚开始导通，因此LED灯组的电流维持时间长短排列分别为第一段LED灯组M1、第二段LED灯组M2、第三段LED灯组M3、……、第n段LED灯组Mn；通过调整LED灯组内部串接的LED灯珠的数量，使第一段LED灯组M1中LED灯珠的数量最多，第二段LED灯组M2、第三段LED灯组M3、……、第n段LED灯组Mn次之，来使LED灯珠更大化利用，提高一体化灯板的光效，LED灯珠的合理布局也提升了调光效果。
本发明针对传统技术中线性分段调光驱动LED灯具转换效率低/光效低、光形差局限性问题，在成本控制情况下，依据电路原理和实际灯具结构，对LED灯珠进行分配和布局，提高转换效率/光效，使LED灯珠得到最大化的利用，同时通过对各段LED灯组位置的合理布局，可以完善调光效果。
图2为本实施例中一体化灯板上LED灯组的排布示意图，图2中，每段LED灯组在一体化灯板上均以一体化灯板的几何中心为中心围绕排布。由里至外各段LED灯组分别为第一段LED灯组M1、第二段LED灯组M2、第三段LED灯组M3、……、第n段LED灯组Mn，其中每段LED灯组所含有的LED灯珠的对应数量分别A1、A2、A3、……、An，且A1>A2>A3>……An。
本实施例中，该基于LED灯组分段调光的线性电源还包括可控硅调光器(图中未示出)，可控硅调光器连接交流电源11，可控硅调光器调节可控各段LED灯组的亮度变化，当整流电路12的电压来时，通过上调可控硅调光器，一体化灯板则由里至外慢慢展亮下调可控硅调光器时，一体化灯板由外至内收缩亮度变暗，犹如一朵花一样，盛开时婉约渐放；闭合时含羞回颦；从光形上分析，此种LED灯组的设置布局方法在调光时，由于内圈的第一段LED灯组M1、第二段LED灯组M2的LED灯珠的数量较多，上调过程不会有阴影且亮度渐变，下调时，外圈的第n段LED灯组Mn的LED灯珠的数量较少，由外到里渐灭过程不会因为外围LED灯珠数量少而暗影较大，此得益于内圈的LED灯组的LED灯珠的数量较多，对外圈光线的补偿，调光会柔和的渐变，犹如油枯之灯慢慢变暗，合情合理；不管从哪个角度看，都是给人以美感。
图3为本实施例中第一段LED灯组的电信号波形图，图3中，B1为第一段LED灯组M1的电流波形，C1为整流后电压波形。图4为本实施例中第二段LED灯组的电信号波形图，B2为第二段LED灯组M2的电流波形，C2为整流后电压波形。图5为本实施例中第三段LED灯组的电信号波形图，B3为第三段LED灯组M3的电流波形，C3为整流后电压波形。图6为本实施例中第n段LED灯组的电信号波形图，Bn为第n段LED灯组M3的电流波形，Cn为整流后电压波形。
通过图3、图4、图5和图6中各段LED灯组流过的电流波形得知，分段调光集成芯片每段开关引脚H1、H2、H3、……、Hn导通所需的最小电压阈值 分别为F1、F2、F3、……、Fn(Fn>……>F3>F2>F1)，因此第一段LED灯组M1是导通时间为最长的一段，M2、M3、……、Mn依次变短，运用本发明中的LED灯珠分配方法，对各段LED灯组M1、M2、M3、……、Mn中的LED灯珠进行数量分配为A1、A2、A3、……、An，且有A1>A2>A3……An。一体化灯板上LED灯珠的数量确定后，采用本发明可以使LED灯珠达到更大化利用，提高电源驱动的转换效率及整灯灯具的光效。
总之，本发明通过合理均匀分配每段LED灯组中LED灯珠的数量，以及每段LED灯组的位置布局，充分解决传统技术中转换效率偏低和整灯光效较差的问题，使LED灯珠充分利用起来，避免通过增加成本，即通过增加LED灯珠的数量以达到光效的目的，同时也解决调光时由LED灯组中LED灯珠的数量及位置分配布局不佳，造成调光时灯具四周亮度不均匀，产生阴影的问题。在提高光效的同时，也完善灯具的调光效果。从外部完善分段调光集成芯片U1驱动的不足，使一体化灯板越来受欢迎，广泛应用于生产并使用于市场。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
Claims (6)
- 一种基于LED灯组分段调光的线性电源，其特征在于，包括设置在一体化灯板上的交流电源、整流电路、分段调光集成芯片以及以串接电气方式连接的多段LED灯组，每段所述LED灯组均包括若干个串接的LED灯珠，每个所述LED灯珠间均匀分布，所述交流电源的第一引脚与所述整流电路的第一引脚连接、并向所述整流电路提供交流高压，所述交流电源的第二引脚与所述整流电路的第二引脚连接、并向所述整流电路提供交流低压参考电平，所述整流电路的第三引脚分别与所述分段调光集成芯片的第一引脚和第一段LED灯组的正极连接、并为所述分段调光集成芯片及所述第一段LED灯组的正极提供整流后的直流高压信号，所述整流电路的第四引脚分别与所述分段调光集成芯片的第二引脚连接、并为所述分段调光集成芯片提供整流后的直流低压参考电平信号，所述第一段LED灯组的负极分别与所述分段调光集成芯片的第一段开关引脚和第二段LED灯组的正极连接，前一段LED灯组的负极均分别与所述分段调光集成芯片的相应段开关引脚和后一段LED灯组的正极连接，最后一段LED灯组的负极与所述分段调光集成芯片的相应段开关引脚连接；所述后一段LED灯组中所含LED灯珠的数量小于所述前一段LED灯组中所含LED灯珠的数量。
- 根据权利要求1所述的基于LED灯组分段调光的线性电源，其特征在于，每段所述LED灯组在所述一体化灯板上均以所述一体化灯板的几何中心为中心围绕排布。
- 根据权利要求2所述的基于LED灯组分段调光的线性电源，其特征在于，当所述整流电路的供电电压大于或等于某一段开关引脚导通所需的最小电压阈值时，所述分段调光集成芯片的相应段开关引脚导通。
- 根据权利要求3所述的基于LED灯组分段调光的线性电源，其特征在于，所述一化体灯板、交流电源、整流电路、分段调光集成芯片和多段LED灯组均以SMD方式共同焊贴于散热板上。
- 根据权利要求4所述的基于LED灯组分段调光的线性电源，其特征在于，所述散热板为铝基板。
- 根据权利要求1至5任意一项所述的基于LED灯组分段调光的线性电源，其特征在于，还包括可控硅调光器，所述可控硅调光器连接所述交流电源。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710971685.8A CN109392215A (zh) | 2017-08-07 | 2017-10-18 | 基于led灯组分段调光的线性电源 |
| CN201710971685.8 | 2017-10-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2019075923A1 true WO2019075923A1 (zh) | 2019-04-25 |
Family
ID=66174661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2017/119903 WO2019075923A1 (zh) | 2017-10-18 | 2017-12-29 | 基于led灯组分段调光的线性电源 |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2019075923A1 (zh) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117042265A (zh) * | 2023-10-10 | 2023-11-10 | 深圳市千岩科技有限公司 | 校准方法、装置、电子设备及计算机可读存储介质 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203533263U (zh) * | 2013-10-10 | 2014-04-09 | 苏州浩森电子科技有限公司 | 一种led节能灯 |
| CN204176597U (zh) * | 2014-01-03 | 2015-02-25 | 山西永昌科技有限公司 | 一种分段调光式led灯 |
| CN207099389U (zh) * | 2017-08-07 | 2018-03-13 | 深圳市暗能量电源有限公司 | 基于led灯组分段调光的线性电源 |
-
2017
- 2017-12-29 WO PCT/CN2017/119903 patent/WO2019075923A1/zh active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203533263U (zh) * | 2013-10-10 | 2014-04-09 | 苏州浩森电子科技有限公司 | 一种led节能灯 |
| CN204176597U (zh) * | 2014-01-03 | 2015-02-25 | 山西永昌科技有限公司 | 一种分段调光式led灯 |
| CN207099389U (zh) * | 2017-08-07 | 2018-03-13 | 深圳市暗能量电源有限公司 | 基于led灯组分段调光的线性电源 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117042265A (zh) * | 2023-10-10 | 2023-11-10 | 深圳市千岩科技有限公司 | 校准方法、装置、电子设备及计算机可读存储介质 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104427688B (zh) | Led交流驱动电路 | |
| CN102932989B (zh) | 一种led驱动装置及其驱动方法 | |
| TW201431434A (zh) | Ｌｅｄ光引擎的電子控制裝置及其應用 | |
| CN206977741U (zh) | 一种可调光调色温led模组电路 | |
| CN204929313U (zh) | Led灯具发光控制装置和系统 | |
| CN210093619U (zh) | 一种精细调光的四通道ac led驱动芯片电路 | |
| WO2019075923A1 (zh) | 基于led灯组分段调光的线性电源 | |
| CN109152134A (zh) | 多路调光驱动系统 | |
| CN102958240B (zh) | 光源装置及其调光控制电路 | |
| CN207099389U (zh) | 基于led灯组分段调光的线性电源 | |
| CN103987162B (zh) | 一种负载自适应led电源 | |
| US20160113080A1 (en) | Light-emitting device capable of adjusting brightness | |
| CN202634833U (zh) | 一种led灯的调光电路 | |
| CN205919163U (zh) | Led光电模组及led灯具 | |
| TWI675607B (zh) | 具有調光功能的發光二極體照明系統 | |
| JP5972313B2 (ja) | ３色ｌｅｄ調光ランプ | |
| CN210351737U (zh) | 一种led路灯驱动电路 | |
| US9084323B2 (en) | Apparatus and method for driving LED | |
| CN203979971U (zh) | 一种亮度可调的led灯 | |
| CN203313489U (zh) | 一种应用于led模组化的高压驱动电路 | |
| CN202818729U (zh) | 一种led驱动装置 | |
| CN204031520U (zh) | 一种led线性无极调光电路 | |
| CN201893969U (zh) | 一种用于led室内照明的可控硅调光的虚拟负载电路 | |
| CN211090066U (zh) | 两个线性恒流驱动电路并接驱动led光源电路的结构 | |
| CN217283465U (zh) | 一种全彩同步灯板 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 17929263 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 17929263 Country of ref document: EP Kind code of ref document: A1 |