CN111556618B - Multichannel dimming lamp and multichannel lighting equipment - Google Patents
Multichannel dimming lamp and multichannel lighting equipment Download PDFInfo
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- CN111556618B CN111556618B CN202010469837.6A CN202010469837A CN111556618B CN 111556618 B CN111556618 B CN 111556618B CN 202010469837 A CN202010469837 A CN 202010469837A CN 111556618 B CN111556618 B CN 111556618B
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- 238000005286 illumination Methods 0.000 claims abstract description 53
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 230000009471 action Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 241001465382 Physalis alkekengi Species 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 238000006243 chemical reaction Methods 0.000 description 1
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- 239000012776 electronic material Substances 0.000 description 1
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- 230000020169 heat generation Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
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Classifications
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- 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]
- H05B45/30—Driver circuits
- H05B45/345—Current stabilisation; Maintaining constant current
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- 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]
- H05B45/10—Controlling the intensity of the light
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- 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]
- H05B45/20—Controlling the colour of the light
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Abstract
The invention discloses a multichannel dimming lamp, which comprises an AC/DC converter, a dimming controller, a main lighting circuit and an auxiliary lighting circuit, wherein the AC/DC converter is connected with the dimming controller; the dimming controller is connected with the main lighting circuit and the auxiliary lighting circuit, and the AC/DC converter is a power supply of the main lighting circuit and the auxiliary lighting circuit; the main lighting circuit comprises a main lighting drive and a main lighting light source which are connected in series; the auxiliary lighting circuit comprises an auxiliary lighting drive and an auxiliary lighting source which are connected in series, wherein the auxiliary lighting drive is linear constant current drive; the primary illumination light source is connected in parallel with the auxiliary illumination circuit. According to the invention, the auxiliary lighting circuit which is connected with the main lighting circuit in parallel in the prior art is connected with the main lighting light source only in parallel, so that the heat productivity is reduced, and the design maximum power of the auxiliary lighting circuit is improved. The invention also provides the multi-channel lighting equipment with the beneficial effects.
Description
Technical Field
The invention relates to the field of intelligent illumination, in particular to a multichannel dimming lamp and multichannel illumination equipment.
Background
Along with the development of society, lamps and lanterns are also constantly adapting to new demands of people as the civilization products that people's daily life, industrial production are indispensable in modern society, and among them, intelligent lamps and lanterns that multichannel lighting effect is adjustable receive more and more attention and attention in a plurality of fields.
The multi-channel lighting refers to a lamp composed of a plurality of adjustable light sources, and is generally divided into a main lighting and a plurality of auxiliary lighting, so that the multi-channel lighting can be applied to space lighting and image display, and when the auxiliary lighting is required to be added on the basis of the main lighting in the prior art, an auxiliary lighting circuit is usually directly connected in parallel on a circuit of the main lighting, namely the main lighting circuit and the auxiliary lighting circuit have the same voltage drop, and the output voltage of a driving circuit of the main lighting circuit is adapted according to the voltage of a lamp strip, so that real constant current control is realized; the driving circuit of the auxiliary lighting is usually linear constant current driving, in principle, is in a constant voltage mode, and has relatively high voltage drop during normal operation, so that relatively high heating power is generated on the device, and the power of the auxiliary lighting is severely limited.
Therefore, how to solve the problem of the auxiliary circuit heating seriously affecting the designed illumination power in the prior art is a urgent problem for those skilled in the art.
Disclosure of Invention
The invention aims to provide a multichannel dimming lamp and multichannel lighting equipment, which are used for solving the problems that an auxiliary driving circuit in the prior art is serious in heating and auxiliary lighting power is limited.
In order to solve the technical problems, the invention provides a multichannel dimming lamp, which comprises an AC/DC converter, a dimming controller, a main lighting circuit and an auxiliary lighting circuit;
the dimming controller is connected with the main lighting circuit and the auxiliary lighting circuit, and the AC/DC converter is a power supply of the main lighting circuit and the auxiliary lighting circuit;
the main lighting circuit comprises a main lighting drive and a main lighting light source which are connected in series;
the auxiliary lighting circuit comprises an auxiliary lighting drive and an auxiliary lighting source which are connected in series, wherein the auxiliary lighting drive is linear constant current drive;
the primary illumination light source is connected in parallel with the auxiliary illumination circuit.
Optionally, in the multi-channel dimming luminaire, the primary lighting source and the auxiliary lighting circuit in parallel include:
the GND end of the auxiliary illumination drive is connected with the cathode of the main illumination light source, so that the main illumination light source is connected with an auxiliary illumination circuit in parallel;
the dimming controller is connected to the auxiliary lighting drive through an isolator.
Optionally, in the multi-channel dimming lamp, the isolator is a photo coupler.
Optionally, in the multi-channel dimming lamp, the AC/DC converter is a PFC buck-boost controller.
Optionally, in the multi-channel dimming luminaire, the main lighting drive is a buck drive.
Optionally, in the multi-channel dimming lamp, the dimming controller is a PWM signal controller.
Optionally, in the multi-channel dimming luminaire, the auxiliary lighting driver is an integrated chip driver or a separate component driver.
Optionally, in the multi-channel dimming lamp, the auxiliary lighting source is an LED light source.
Optionally, in the multi-channel dimming lamp, the auxiliary lighting sources of the auxiliary lighting circuits are light sources with the same working voltage.
A multi-channel lighting device, characterized in that the multi-channel lighting device comprises a multi-channel dimming luminaire as described in any one of the above.
The invention provides a multichannel dimming lamp, which comprises an AC/DC converter, a dimming controller, a main lighting circuit and an auxiliary lighting circuit, wherein the AC/DC converter is connected with the dimming controller; the dimming controller is connected with the main lighting circuit and the auxiliary lighting circuit, and the AC/DC converter is a power supply of the main lighting circuit and the auxiliary lighting circuit; the main lighting circuit comprises a main lighting drive and a main lighting light source which are connected in series; the auxiliary lighting circuit comprises an auxiliary lighting drive and an auxiliary lighting source which are connected in series, wherein the auxiliary lighting drive is linear constant current drive; the primary illumination light source is connected in parallel with the auxiliary illumination circuit. According to the invention, the auxiliary lighting circuit which is connected with the main lighting circuit in parallel in the prior art is connected with the main lighting light source only in parallel, so that the voltage drop of the whole auxiliary lighting circuit is reduced, namely the voltage divided by the auxiliary lighting drive is reduced by phase change, and the voltage division of the auxiliary lighting drive is in direct proportion to heating, therefore, the reduction of the heating value of the auxiliary lighting drive is realized, and the design maximum power of the auxiliary lighting circuit is improved. The invention also provides the multi-channel lighting equipment with the beneficial effects.
Drawings
For a clearer description of embodiments of the invention or of the prior art, the drawings that are used in the description of the embodiments or of the prior art will be briefly described, it being apparent that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from them without inventive effort for a person skilled in the art.
FIG. 1 is a schematic circuit diagram of an integrated chip driven multi-channel dimming luminaire of the prior art;
fig. 2 is a schematic structural diagram of an embodiment of a multi-channel dimming lamp provided by the present invention;
fig. 3 is a partial circuit diagram of another embodiment of a multi-channel dimming lamp provided by the present invention;
fig. 4 is a partial circuit diagram of another embodiment of a multi-channel dimming lamp provided by the present invention;
fig. 5 is a schematic circuit diagram of driving separate components of an embodiment of a multi-channel dimming lamp according to the present invention.
Detailed Description
In order to better understand the aspects of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The core of the present invention is to provide a multi-channel dimming lamp, a schematic structural diagram of one embodiment of which is shown in fig. 2, which is referred to as embodiment one, including an AC/DC converter 100, a dimming controller 200, a main lighting circuit and an auxiliary lighting circuit;
the dimming controller 200 is connected to the main lighting circuit and the auxiliary lighting circuit, and the AC/DC converter 100 is a power supply of the main lighting circuit and the auxiliary lighting circuit;
the primary lighting circuit includes a primary lighting driver 310 and a primary lighting source 320 in series;
the auxiliary lighting circuit comprises an auxiliary lighting driver 410 and an auxiliary lighting source 420 connected in series, wherein the auxiliary lighting driver 410 is a linear constant current driver;
the primary illumination source 320 is connected in parallel with the auxiliary illumination circuit.
In addition, the AC/DC converter 100 is a PFC buck-boost controller, which has stable frequency and is convenient to control.
As a preferred embodiment, the dimming controller 200 is a PWM signal controller, and controls the analog circuit in a digital manner, so that the cost and power consumption of the system can be greatly reduced, and the accuracy of signal control can be improved.
The auxiliary illumination light source 420 is an LED light source, which has good controllability, low heat generation and low energy consumption.
In this embodiment, the AC/DC converter 100 is directly connected to the main illumination drive 310, and the current flows out of the AC/DC converter 100, then enters the main illumination light source 320 and the auxiliary illumination drive 410 connected in parallel, and then flows out of the auxiliary illumination drive 410 and then enters the auxiliary illumination light source 420.
It should be noted that, the auxiliary illumination light sources 420 of the auxiliary illumination circuits are light sources with the same working voltage, and the light sources with the same working voltage can be controlled by the same control signal, so that the control program setting is convenient, and the operation flow is simplified.
Only one of the auxiliary lighting circuits is shown in fig. 2, and in actual operation, the number of auxiliary lighting circuits may be adjusted according to actual conditions.
The invention provides a multichannel dimming lamp, which comprises an AC/DC converter 100, a dimming controller 200, a main lighting circuit and an auxiliary lighting circuit; the dimming controller 200 is connected to the main lighting circuit and the auxiliary lighting circuit, and the AC/DC converter 100 is a power supply of the main lighting circuit and the auxiliary lighting circuit; the primary lighting circuit includes a primary lighting driver 310 and a primary lighting source 320 in series; the auxiliary lighting circuit comprises an auxiliary lighting driver 410 and an auxiliary lighting source 420 connected in series, wherein the auxiliary lighting driver 410 is a linear constant current driver; the primary illumination source 320 is connected in parallel with the auxiliary illumination circuit. The auxiliary lighting circuit connected with the main lighting circuit in parallel in the prior art is only connected with the main lighting light source 320 in parallel, so that the voltage drop of the whole auxiliary lighting circuit is reduced, namely the voltage divided by the auxiliary lighting drive 410 is reduced by phase change, and the partial pressure of the auxiliary lighting drive 410 is in direct proportion to heating, thereby realizing the reduction of the heating value of the auxiliary lighting drive 410 and improving the design maximum power of the auxiliary lighting circuit.
On the basis of the first embodiment, a specific connection manner between elements of the multi-channel dimming lamp is further defined to obtain a second embodiment, and a schematic diagram of a local circuit of the second embodiment is shown in fig. 3, where the second embodiment includes an AC/DC converter 100, a dimming controller 200, a main lighting circuit and an auxiliary lighting circuit;
the dimming controller 200 is connected to the main lighting circuit and the auxiliary lighting circuit, and the AC/DC converter 100 is a power supply of the main lighting circuit and the auxiliary lighting circuit;
the primary lighting circuit includes a primary lighting driver 310 and a primary lighting source 320 in series;
the auxiliary lighting circuit comprises an auxiliary lighting driver 410 and an auxiliary lighting source 420 connected in series, wherein the auxiliary lighting driver 410 is a linear constant current driver;
the main illumination light source 320 is connected in parallel with the auxiliary illumination circuit;
the primary illumination source 320 in parallel with the auxiliary illumination circuit comprises:
the GND terminal of the auxiliary lighting driver 410 is connected to the cathode of the main lighting source 320, so that the main lighting source 320 is connected in parallel to the auxiliary lighting circuit;
the dimming controller 200 is connected to the auxiliary lighting driver 410 through an isolator.
The difference between this embodiment and the above embodiment is that in this embodiment, how the auxiliary lighting driver 410 is connected in parallel with the main lighting source 320 is limited, and the other structures are the same as those of the above embodiment, and the detailed description is omitted herein.
Also, the main lighting driver 310 is a buck type driver, as shown in fig. 3, and the main lighting driver 310 may be selected according to actual situations, such as a boost type, a buck-boost type, or a flyback type.
In addition, the auxiliary lighting driver 410 is an integrated chip driver or a separate component driver, where the auxiliary lighting driver 410 shown in fig. 3 is an integrated chip driver, the illustrated embodiment has two auxiliary lighting circuits, vbus+ represents a power supply line, VLED 2-and VLED 3-represent cathodes of auxiliary lighting sources 420 of the two auxiliary lighting circuits respectively, and a circuit schematic diagram of the integrated chip-driven multi-channel dimming lamp in the prior art is shown in fig. 1, in which the main lighting circuit, the auxiliary lighting circuit 1 and the auxiliary lighting circuit 2 are connected in parallel, and a circuit schematic diagram of the separate component driver is shown in fig. 5.
In this embodiment, it is specifically defined that the GND terminal of the auxiliary lighting driver 410, which is originally grounded, is connected to the cathode (i.e., VW-terminal shown in the drawing) of the main lighting light source 320, so that the auxiliary lighting circuit is connected to the main lighting light source 320 in parallel, and is connected to the main lighting driver 310 in series, where there may be a plurality of auxiliary circuits, but the number and power of the auxiliary circuits may be limited by the total power of the circuit in which the main lighting driver 310 is located, and the total brightness is the total power under the condition that the light source voltage is determined, and is dynamically controlled by the current.
For example, the high-end intelligent LED lamp with the temperature and the color temperature being adjusted in the market at present is basically equal in cold power and warm power, for example, the cold power and the warm power are respectively 80W, the set warm light is the main illumination of the proposal, the maximum power is 80W, but only about 40W is generally used, the rest 40W can be used for driving two paths of auxiliary illumination (or three paths of color RGB auxiliary illumination), and the two paths of auxiliary illumination can be used for independently adjusting the temperature and the color temperature (or adjusting the color RGB). Dynamic adjustment of the primary and secondary lighting is thus established. But in practice the cool color temperature is more and the warm color temperature is less for the user. Therefore, for the design of a driving circuit, the electronic materials of the warm lamp are wasted somewhat, the cost is high, and by adopting the specific implementation mode, the underutilized full circuit of the driving of the warm lamp can be fully utilized (simultaneously, the current of the warm lamp and the current of auxiliary illumination are borne), so that the manufacturing cost is greatly reduced.
In addition, since the GND end of the auxiliary lighting driver 410 is not grounded, that is, the auxiliary lighting driver 410 and the dimming controller 200 are not commonly grounded, the electric signal sent by the dimming controller 200 cannot be directly received and identified by the dimming controller 200, so that the electric signal sent by the dimming controller 200 is converted into the electric signal identifiable by the auxiliary lighting driver 410 by the isolator, and stable and reliable signal transmission is ensured.
On the basis of the second embodiment, a specific connection manner between elements of the multi-channel dimming lamp is further defined to obtain a third embodiment, and a schematic diagram of a local circuit of the third embodiment is shown in fig. 4, where the third embodiment includes an AC/DC converter 100, a dimming controller 200, a main lighting circuit and an auxiliary lighting circuit;
the dimming controller 200 is connected to the main lighting circuit and the auxiliary lighting circuit, and the AC/DC converter 100 is a power supply of the main lighting circuit and the auxiliary lighting circuit;
the primary lighting circuit includes a primary lighting driver 310 and a primary lighting source 320 in series;
the auxiliary lighting circuit comprises an auxiliary lighting driver 410 and an auxiliary lighting source 420 connected in series, wherein the auxiliary lighting driver 410 is a linear constant current driver;
the main illumination light source 320 is connected in parallel with the auxiliary illumination circuit;
the primary illumination source 320 in parallel with the auxiliary illumination circuit comprises:
the GND terminal of the auxiliary lighting driver 410 is connected to the cathode of the main lighting source 320, so that the main lighting source 320 is connected in parallel to the auxiliary lighting circuit;
the dimming controller 200 is connected to the auxiliary lighting driver 410 through an isolator;
the isolator is a photoelectric coupler.
The present embodiment is different from the above embodiment in that the specific type of the separator is limited in this embodiment, and the other structures are the same as those of the above embodiment, and will not be described in detail herein.
In this embodiment, it is specifically defined that the isolator is a photo-coupler, that is, the electrical signal from the dimming controller 200 is converted into an optical signal by the light emitting diode in the photo-coupler and is absorbed by the photo-sensing element on the other side to be changed into an electrical signal again, so that the equal ratio conversion of the intensity of the electrical signal is realized, the universality is stronger, and since the two ends of the photo-coupler are not directly electrically contacted, the safety is better, the working stability is strong, and of course, other isolators can be selected according to the actual situation.
Fig. 4 is the photo coupler, wherein the transmitted electrical signal PWM2' of the dimming controller 200 is modulated by the photo coupler and converted into the electrical signal PWM2 recognizable by the auxiliary lighting driver 410. Port 3 is also shown connected to the cathode of the primary illumination source 320.
The invention also provides a multi-channel lighting device, which comprises the multi-channel dimming lamp. The invention provides a multichannel dimming lamp, which comprises an AC/DC converter 100, a dimming controller 200, a main lighting circuit and an auxiliary lighting circuit; the dimming controller 200 is connected to the main lighting circuit and the auxiliary lighting circuit, and the AC/DC converter 100 is a power supply of the main lighting circuit and the auxiliary lighting circuit; the primary lighting circuit includes a primary lighting driver 310 and a primary lighting source 320 in series; the auxiliary lighting circuit comprises an auxiliary lighting driver 410 and an auxiliary lighting source 420 connected in series, wherein the auxiliary lighting driver 410 is a linear constant current driver; the primary illumination source 320 is connected in parallel with the auxiliary illumination circuit. The auxiliary lighting circuit connected with the main lighting circuit in parallel in the prior art is only connected with the main lighting light source 320 in parallel, so that the voltage drop of the whole auxiliary lighting circuit is reduced, namely the voltage divided by the auxiliary lighting drive 410 is reduced by phase change, and the partial pressure of the auxiliary lighting drive 410 is in direct proportion to heating, thereby realizing the reduction of the heating value of the auxiliary lighting drive 410 and improving the design maximum power of the auxiliary lighting circuit.
In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, so that the same or similar parts between the embodiments are referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
It should be noted that in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The multi-channel dimming lamp and the multi-channel lighting device provided by the invention are described in detail above. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (9)
1. The multichannel dimming lamp is characterized by comprising an AC/DC converter, a dimming controller, a main lighting circuit and an auxiliary lighting circuit;
the dimming controller is connected with the main lighting circuit and the auxiliary lighting circuit, and the AC/DC converter is a power supply of the main lighting circuit and the auxiliary lighting circuit;
the main lighting circuit comprises a main lighting drive and a main lighting light source which are connected in series;
the auxiliary lighting circuit comprises an auxiliary lighting drive and an auxiliary lighting source which are connected in series, wherein the auxiliary lighting drive is linear constant current drive;
the main illumination light source is connected with the auxiliary illumination circuit in parallel;
the auxiliary illumination light sources of the auxiliary illumination circuits are light sources with the same working voltage, and the auxiliary illumination light sources are controlled by the same control signal.
2. The multi-channel dimming light fixture of claim 1, wherein the primary illumination light source is in parallel with the auxiliary illumination circuit comprises:
the GND end of the auxiliary illumination drive is connected with the cathode of the main illumination light source, so that the main illumination light source is connected with an auxiliary illumination circuit in parallel;
the dimming controller is connected to the auxiliary lighting drive through an isolator.
3. The multi-channel dimming light fixture of claim 2, wherein the isolator is a photo coupler.
4. The multi-channel dimming luminaire of claim 1, wherein the AC/DC converter is a PFC buck-boost controller.
5. The multi-channel dimming luminaire of claim 1, wherein the primary lighting drive is a buck drive.
6. The multi-channel dimming light fixture of claim 1, wherein the dimming controller is a PWM signal controller.
7. The multi-channel dimming luminaire of claim 1, wherein the auxiliary lighting driver is an integrated chip driver or a discrete component driver.
8. The multi-channel dimming light fixture of claim 1, wherein the auxiliary illumination source is an LED light source.
9. A multi-channel lighting device, characterized in that the multi-channel lighting device comprises a multi-channel dimming luminaire as claimed in any one of claims 1 to 8.
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| CN202010469837.6A CN111556618B (en) | 2020-05-28 | 2020-05-28 | Multichannel dimming lamp and multichannel lighting equipment |
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| CN202010469837.6A CN111556618B (en) | 2020-05-28 | 2020-05-28 | Multichannel dimming lamp and multichannel lighting equipment |
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