CN214070198U - Switch dimming lamp driving power supply and LED illuminating lamp using same - Google Patents

Abstract

The utility model relates to a switch is adjusted luminance lamps and lanterns drive power supply and is used its LED light, this drive power supply includes power module, and it inserts switch K1, and this switch K1 connects gradually component D1, R5, R6 and constitutes switch detection circuitry by D1, R5, R6, R8; the MCU power supply control unit is included, a No. 3 pin and a No. 4 pin of a chip of the MCU power supply control unit are sequentially connected to an element Q2 and an element Q3 respectively, and the on/off of the element Q2 and the element Q3 are controlled through an output level, so that the color temperature and the brightness of the LED lighting lamp are changed conveniently; the DC/DC power supply module is also included. The utility model discloses a reasonable optimization sets up switch lamp driving power supply that adjusts luminance for realize colour temperature and luminance change, thereby when making this lamp driving power supply use lamps and lanterns illumination product, need not luminance, the colour temperature that the remote controller also is convenient for realize lamps and lanterns and be adjustable in succession, and do benefit to and reduce lamps and lanterns dimming control cost, easy operation.

Description

Switch dimming lamp driving power supply and LED illuminating lamp using same

Technical Field

The utility model relates to the field of lighting technology, especially, relate to a switch lamps and lanterns drive power supply that adjusts luminance.

Background

For the technical field of illumination, the LED lamp is widely applied and can replace the traditional lamp in most occasions. No matter what kind of lamp, the light source is the basis for the lamp to emit light, and as for the traditional light source, there are energy-saving lamps, LEDs, fluorescent lamps, halogen lamps, etc.

The technical scheme of the utility model relates to an ASILC (abnormal Solution incident light control) special intelligent light control Solution, which mainly aims at designing corresponding technical means based on the color temperature and the brightness of the light source of the existing lamp, wherein the brightness relates to parameters such as illumination, luminous flux, luminous intensity and the like; the color temperature is a unit of measurement that represents the color components contained in the light, and can also be considered as the main hue of the light, for example, the common types of yellow light, warm white light, and regular white light on the market, the color temperature may affect the perception of the color, the product with lower color temperature (such as yellow light) may feel warmer, the product with higher color temperature may feel colder, and the color temperature may be selected flexibly according to personal preference or by combining with the color matching of the application place.

The utility model discloses technical scheme's designer discovers when carrying out the feasibility analysis, because the user all usually is with the place of using at that time, the environment, light brightness etc. and combine the application demand at that time to select the lamps and lanterns that possess suitable parameter with the adaptation ground, be used for furthest exerting the lamps and lanterns function that possess this parameter lamps and lanterns under this application demand condition, it is very obvious, now that be to satisfy user's different application demands, then if the user need change the colour temperature or the luminance of lamps and lanterns because of place, environment, light etc. when, it is certain inconvenient to prepare the lamps and lanterns of various different colour temperatures or luminance in advance and change when preparing application demand to change, this just requires these lamps and lanterns themselves to possess the function that colour temperature is adjusted, adjustablely or colour temperature and luminance are all adjustable; therefore, if the color temperature and the brightness are adjusted, most of the conventional technical means are adjusted by an externally-arranged remote controller.

After the intensive summary of the technologies adopted by designers for the current lamps related to color temperature and brightness adjustment, it is found that the setting of most of the current lamps related to color temperature and brightness adjustment is not favorable for practical application, and the drawbacks include:

first, as mentioned above, for the analysis of the color temperature and brightness adjustment of the lamp, various light-on dimming products in the current lighting market can only realize the color temperature adjustment, or utilize the wall switch to realize the change between the color temperature 1850K-5000K of the lamp in the operation mode (on-off-on), but can not realize the continuous adjustable change of the brightness, even after adopting the switch dimming setting, it is not favorable to memorize the setting brightness and color temperature state;

secondly, even if a remote controller control scheme is adopted, a special remote controller or terminal equipment is required to load a special APP for control, the use and operation are quite complex, once the remote controller or the terminal equipment is not beside or lost, continuous and adjustable brightness cannot be realized within a while, and in addition, the APP loaded by the terminal equipment cannot be used under the condition of no network or poor network model.

In summary, no matter whether a wall switch is used for realizing continuous adjustment of one of the color temperature and the brightness, or a remote controller or a terminal device is used for loading an APP program to operate and control the color temperature or the brightness, there are obvious limitations, which are not beneficial to the dimming control cost of the lamp and the humanized design of the user, and obviously, it is not feasible to continue to design a corresponding external device or solve the problem by using the program.

The utility model discloses technical scheme's designer is after analyzing out above defect step by step, shifts the important factor of problem solution to lamps and lanterns drive power supply, and present lamps and lanterns drive power supply does not have the effect that the performance is showing in the aspect of colour temperature and adjustting of the lighteness to technical staff in the field has not been associated lamps and lanterns drive power supply and colour temperature, the continuous adjustment of luminance is effective yet.

Based on the above point, the utility model discloses technical scheme's designer also carries out performance test many times with the power supply circuit module that each design phase took, just finally obtain the technical scheme that tends to the best optimization, it adjusts luminance lamps and lanterns drive power supply and designs corresponding lamps and lanterns with this to propose a switch, it rationally optimizes and sets up AC/DC-CC/CV power module, DC/DC MCU power module, and MCU power supply control unit, come control corresponding component Q2, Q3 work, in order to realize colour temperature and luminance change, thereby when this lamps and lanterns drive power supply is applied to lamps and lanterns illumination product, it also does benefit to realizing the luminance of lamps and lanterns, the colour temperature is adjustable in succession to need not the remote controller, and lamps and lanterns dimming control cost has been reduced, the technical scheme who provides can alleviate completely, solve or solve the problem that prior art exists partially or completely, and can satisfy the user to LED illumination lamps and lanterns colour temperature continuous adjustable, The use requirement of brightness adjustment.

SUMMERY OF THE UTILITY MODEL

For overcoming above-mentioned problem or at least partly solve or slowly subtract and solve above-mentioned problem, the utility model provides a switch lamps and lanterns drive power supply of adjusting luminance, its reasonable optimization sets up AC/DC-CC/CV power module, DC/DC MCU power module and MCU power supply control unit, realizes colour temperature and luminance change to when making this lamps and lanterns drive power supply use lamps and lanterns illumination product, need not the luminance of remote controller also being convenient for realize lamps and lanterns, colour temperature is adjustable in succession, and do benefit to and reduce lamps and lanterns control cost of adjusting luminance.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a switch dimming lamp driving power supply for simultaneous adjustment of color temperature and brightness of an LED lighting lamp, comprising:

the power module is connected with a switch K1, the switch K1 is sequentially connected with elements D1, R5 and R6, and a switch detection circuit is formed by D1, R5, R6 and R8;

the MCU power supply control unit is used for sequentially connecting a No. 3 pin and a No. 4 pin of a chip of the MCU power supply control unit to an element Q2 and an element Q3 respectively, and controlling the on/off of the element Q2 and the element Q3 through an output level so as to facilitate the color temperature and brightness change of the LED lighting lamp;

and the DC/DC power supply module is respectively connected with the power supply module and the MCU power supply control unit.

Aiming at the above main technical solutions, technicians can further adopt corresponding technical means for the circuit module part to form a plurality of technical solutions based on the same concept, including:

wherein, the power module preferably adopts an AC/DC-CC/CV power module;

the MCU power supply control unit controls PWM output of the MCU power supply control unit by recognizing power failure detection.

For the switch K1, after being closed, the voltage is divided by the AC110/220V input D1, R5, R6 and R8, so that a pulsating waveform of 0-4.5V is output;

further, if the MCU power supply control unit detects the pulse waveform, the switch K1 is turned on, and a corresponding program is executed.

In addition, the MCU power supply control unit can continuously detect four cycles to determine the off state of the switch K1 when detecting that the voltage division of D1, R5, R6 and R8 is 0V.

In order to achieve the above purpose, the utility model discloses still adopt following technical scheme:

an LED lighting fixture, which has the switch dimming fixture driving power supply implemented by any one of the above technical solutions, wherein two pins of the MCU power supply control unit chip are sequentially connected to a 5000K LED light source of the LED lighting fixture through a connection element Q2, and connected to an 1850K LED light source of the LED lighting fixture through a connection element Q3, respectively, and different color temperatures are obtained through output levels of the two pins, and the states of the element Q2 and the element Q3 include:

the element Q3 is turned on, the element Q2 is turned off, the 1850K LED light source is lightened, and the illumination color temperature is 1850K;

the element Q3 is turned off, the element Q2 is turned on, the 5000K LED light source is lightened, and the illumination color temperature is 5000K;

when the element Q3 is conducted, the element Q2 is conducted, the 1850K LED light source and the 5000K LED light source are simultaneously lightened, and the illumination color temperature is 2975K.

In addition, the MCU power supply control unit chip outputs PWM duty ratio signals to control the element Q2 and the element Q3 through a No. 3 pin and a No. 4 pin, the current in a loop is changed, the current proportion is distributed, and the light flux proportion of the two color temperature LEDs is controlled, so that the mixed color temperature of the LED light fluxes is 3425K, 4000K or other color temperatures.

For the circuit arrangement of the LED lighting fixture, the method further comprises the following steps:

when the LED lighting lamp is in a state of lighting the 1850K LED light source, the 5000K LED light source is not lighted;

when the LED lighting lamp is in a state of lighting the 5000K LED light source, the 1850K LED light source is not lighted.

The utility model forms the switch dimming lamp driving power supply by reasonably optimizing and setting the AC/DC-CC/CV power supply module, the DC/DC MCU power supply module and the MCU power supply control unit, and is used for realizing color temperature and brightness change, thereby when the lamp driving power supply is applied to the lamp lighting product, the brightness and color temperature of the lamp can be continuously adjusted without a remote controller, and the lamp dimming control cost can be reduced; compared with the traditional APP and remote controller scheme, the cost of remote controller and APP control can be saved, the use cost of a user is reduced, and the operation is simple.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of an application state of a driving power supply for a switching dimming lamp according to an embodiment of the present invention;

fig. 2 is a schematic view of a cyclic gradual change of color temperature in an application state of a driving power supply for a switching dimming lamp implemented in an embodiment of the present invention;

fig. 3 is a schematic view of a cycle variation flow of a switch dimming lamp driving power supply implemented in an embodiment of the present invention, in which the brightness is set to 10% -100% when the switch dimming lamp driving power supply is applied;

fig. 4 is a schematic diagram of an operation timing sequence of brightness setting when the switching dimming lamp driving power supply implemented in the embodiment of the present invention is applied;

fig. 5 is a schematic diagram of a flow of brightness setting four-stage cycle jump when the driving power supply of the switching dimming lamp implemented in the embodiment of the present invention is applied;

fig. 6 is a schematic diagram of a driving power supply of a switching dimming lamp implemented by an embodiment of the present invention, and the working principle thereof;

fig. 7 is a first schematic diagram of a pulsating waveform of the operating state of the switching dimming lamp driving power supply according to the embodiment of the present invention;

fig. 8 is a schematic diagram of a pulsating waveform of a switching dimming lamp driving power supply according to an embodiment of the present invention in an operating state;

fig. 9 is a schematic diagram of a switch dimming lamp driving power supply implemented by an embodiment of the present invention, a specific composition principle and an application state connection thereof;

fig. 10 is a schematic diagram of a PWM signal outputted from the MCU pin of the driving power supply for the switching dimming lamp implemented in the embodiment of the present invention.

Detailed Description

The utility model discloses the switch that plans to implement lamps and lanterns drive power supply of adjusting luminance, the aim at that the technical means implemented will reach, utilize wall switch to realize the continuous adjustment or the conventional remote controller of colour temperature or luminance a function to LED illumination lamps and lanterns in the past, APP program operation comes control colour temperature or luminance and the not convenient to adjust that causes, the function singleness and be unfavorable for reducing limitations such as lamps and lanterns cost of adjusting luminance, and set up lamps and lanterns drive power supply through reasonable optimization and impel realization colour temperature and luminance change, so that when this drive power supply uses lamps and lanterns illumination product, can satisfy its application demand.

The utility model discloses the technical scheme who implements mainly designs a switch lamp driving power that adjusts luminance through reasonable optimization circuit module to this lamps and lanterns driving power who designs is the basis, is applied to the corresponding illumination lamps and lanterns that need colour temperature and adjustting of lighteness, makes this illumination lamps and lanterns realize corresponding function. Therefore, only the design of the circuit module of the driving power supply part, and some corresponding circuit components and wires in addition, since the manner in which circuits are connected by conventional means is many for different technicians, and the circuit elements employed are different, different circuits can be designed on the premise of the driving power supply, so that in the circuit connection process, for the conventional technical means not included in the technical solution of the present invention, the present embodiment does not need to refine the model, connection position, connection mode, etc. of the circuit elements used in each circuit unit link, for example, appropriate IC chips selected for each module are replaced according to different design requirements, and each module is connected to a common connection mode of the LED lamp circuit, and the like, and circuit implementation personnel can implement the method completely according to conventional technical means. Therefore, according to different implementation conditions and application requirements, a technician can actually obtain a series of advantages brought by the switching dimming driving power supply formed according to the present application after actually assembling and debugging the switching dimming driving power supply, and the advantages can be gradually reflected in the following analysis of the structure.

As shown in fig. 1, fig. 6 and fig. 9, the utility model discloses the switching light modulation lamps and lanterns drive power supply that technical scheme implemented, its principle of composition, based on by consecutive AC/DC-CC/CV power module, DC/DC MCU power module, MCU power supply control unit constitutes, element Q2, element Q3 are inserted respectively in proper order to the 3 rd pin, the 4 th pin of the chip that MCU power supply control unit adopted, output control level, so that control element Q2, element Q3 work, realize the colour temperature and the luminance change of the illumination lamps and lanterns of using this drive power supply; the external access switch K1 of the AC/DC-CC/CV power supply module is connected with the switch K1, and the switch K1 is connected with the elements D1, R5 and R6 in sequence; and a triode element Q1 of the DC/DC MCU power supply module is connected with a No. 1 pin of the MCU power supply control unit. The color temperature control is realized by combining the lighting lamp with the driving power supply specifically as follows:

if the 4 th pin of the MCU power supply control unit chip outputs the level and the 3 rd pin outputs the low level, the element Q3 is switched on, the element Q2 is switched off, then an LED 1850K of the LED + Y-loop is lightened, and the lighting color temperature is 1850K;

if the 4 th pin of the MCU power supply control unit chip outputs a low level and the 3 rd pin outputs a high level, the element Q3 is cut off, the element Q2 is turned on, the LED + and the 5000K LED of the W-loop are turned on, and the illumination color temperature is 5000K;

if the 4 th pin of the MCU power supply control unit chip outputs a high level and the 3 rd pin outputs a high level, the element Q3 is conducted, the element Q2 is conducted, the LED +, the Y-loop LED and the W-loop LED are simultaneously lightened, and the illumination color temperature is 2975K;

correspondingly, for the realization of other color temperatures of 3425K, 4000K and the like, the MCU power supply control unit chip outputs PWM duty ratio signals to control the element Q2 and the element Q3 through the No. 3 pin and the No. 4 pin, the current in the loop is changed, the current proportion is distributed, and the luminous flux proportion of the LEDs with two color temperatures is controlled, so that the LED power supply control unit chip and the element Q2 are mixed into other color temperatures of 3425K, 4000K and the like.

The utility model discloses a design switch light modulation lamps and lanterns drive power supply, when it is applied to LED illumination lamps and lanterns, the technical staff can carry out corresponding product design according to different demands, for example, can design night mode gradual change bright function, in the late night, when the human body just revived from the sleep, turn on the light and throw light on, the illumination of too strong light can burn eyes, gradual change function, by luminance 15S gradual change of 10% to 100% luminance, let eyes adapt to illumination light, protect eyes; of course, other related products are designed more and are not further described.

As shown in fig. 10, the utility model discloses the switching light modulation lamps and lanterns drive power supply that technical scheme implemented to the control of luminance, MCU power supply control unit chip 3 pin, 4 th pin output PWM signal adjust the duty cycle and set for electric current on component Q2, the component Q3 return circuit, and the PWM signal state does, in the picture: ton is high level, Toff is low level, and high levels Q2 and Q3 are conducted;

setting duty ratio of a color temperature control element Q2 and an element Q3, locking color temperature, completing color temperature setting, setting corresponding color temperature duty ratio of a No. 3 pin and a No. 4 pin of an MCU power supply control unit chip by brightness adjustment, simultaneously increasing or reducing duty ratio of the No. 3 pin and the No. 4 pin of the MCU power supply control unit chip, setting brightness change, correspondingly controlling duty ratio of a single path by monochrome temperature (1850K or 5000K), and closing output in addition so as to realize monochrome temperature brightness adjustment.

As shown in fig. 1, under the state of being applied to LED lighting fixture, the utility model discloses the switch that technical scheme implemented adjusts luminance lamps and lanterns drive power supply, its colour temperature change principle is:

for 1850K, the 'LED +' and 'Y-' of the switch dimming driving power supply form a loop, and an 'LED light source-1850K' light source is lightened, at the moment, the 'LED +' is turned off to the 'W-' loop, and the 'LED light source-5000K light source' is not lightened;

for 5000K, the 'LED +' and 'W-' of the switching dimming driving power supply form a loop, the 'LED light source-5000K' light source is lightened, at the moment, the 'LED +' is turned off to the 'Y-' loop, and the 'LED light source-1850K light source' is not lightened;

the color temperatures of 2975K, 3425K, 4000K and the like are controlled by controlling the current between LED + ' and W- ' and Y- ' to realize the brightness change of the LED light source-1850K and the LED light source-5000K light source and mix the brightness change into the color temperature between 1850K and 5000K (refer to the analysis of the part of the figure 9); for example, if the Y-and W-circuits are simultaneously lighting the light source and the brightness of the two circuits is 50%, the mixed color temperature is 2975K, and of course, other corresponding measures are set according to different requirements of designers.

As shown in fig. 2, under the state of being applied to LED lighting fixture, the utility model discloses the switch that technical scheme implemented adjusts luminance lamps and lanterns drive power supply, its switch setting colour temperature specifically is:

when the switch K1 is closed, the AC110/220V L and the N phase supply power to the switch dimming driving power supply, at the moment, the LED light source of 1850K is lightened, the switch K1 is opened, the switch K1 is closed again (in 3S), and the color temperature is circularly and gradually changed;

when the switch K1 completes the on-off-on in sequence and finishes the action within 3 seconds, the color temperature starts to change circularly, namely 1850K, 2975K, 3425K, 4000K and 5000K change circularly, and each color temperature jumps to the next color temperature after being lightened for 3 seconds; opening the switch K1 at any color temperature, closing the switch K1 again within 3 seconds, locking the color temperature, memorizing and storing, and lighting the LED light source in normal use to set the color temperature; for example, switch K1 completes the close-open-close sequence; after the color temperature gradient is entered, the switch K1 is opened at 4000K, the switch K1 is closed within 3 seconds, the color temperature stored by the state memory is 4000K, and the illumination with the color temperature of 4000K is used later.

As shown in fig. 3-5, under the state of being applied to LED lighting fixture, the utility model discloses the switch that technical scheme implemented adjusts luminance lamps and lanterns drive power supply, two kinds of luminance that the technical staff can adopt set for the scheme and do in proper order:

one of the setting schemes is as follows: the switch K1 is closed, opened, closed (set color temperature cycle change), opened, closed (memory color temperature state), opened (within 3 seconds), closed, and enters the brightness cycle change of 10% -100%, the switch K1 is opened, closed, and when the memory storage switch K1 is opened, the brightness state on the selected fold line, and the specific operation time sequence is shown in figure 4.

Setting a second scheme: the switch K1 is turned on, turned off, turned on (set color temperature cycle change), turned off, turned on (memorize color temperature state), turned off (within 3 seconds), and turned on to enter four-segment cycle jumps of brightness, respectively 100%, 70%, 50%, and 30%, as shown in fig. 5 for specific operation.

As shown in fig. 6-8, in the state of being applied to the LED lighting fixture, when the switch K1 is closed, the switching dimming fixture driving power supply implemented by the technical solution of the present invention divides the AC110/220V input voltage into D1, R5, R6 and R8, and outputs a 0-4.5V pulsating waveform, and the waveform diagram thereof can refer to fig. 7;

when the power failure detection of the MCU singlechip detects the waveform shown in the figure 7, the switch K1 is closed, and the MCU executes a corresponding program; the switch K1 is opened in the closed state, and the voltage of D1, R5, R6 and R8 is divided, and the variation waveform can be referred to fig. 8;

in addition, if the switch K1 is disconnected at T1', the partial pressure of the elements D1, R5, R6 and R8 is 0V, and after the MCU singlechip detects 0V, the MCU singlechip continuously detects four periods of T2, T3, T4 and T5 and judges that the K1 is disconnected; in any period, K1 is off, four periods are continuously detected to determine the state of K1, and only when all four periods are detected to be 0V, K1 is off.

D1, R5, R6 and R8 form a K1 switch detection circuit, and the MCU power supply control unit controls PWM1 and PWM2 to output by recognizing power failure detection so as to realize the functions of color temperature regulation, brightness and state memory; furthermore, the technical scheme can still combine the utility model discloses the switch that technical scheme implemented adjusts luminance lamps and lanterns drive power supply carries out corresponding expansion outside the scheme, for example, usable falls electric memory singlechip and passes through inside memory accumulator, and memory state data guarantees to fall electric for a long time, stores the state data that the user set for, can adopt some conventional technological means to the technical scheme, does not contain the utility model discloses within the technical scheme, the here is no longer repeated.

In the description herein, the appearances of the phrases "embodiment one," "this embodiment," "specific implementation," and the like in this specification are not necessarily all referring to the same embodiment or example, but rather to the same embodiment or example. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example; furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the description of the present application, the terms "connect", "mount", "fix", "set", "have", etc. are used in a broad sense, for example, the term "connect" may be a fixed connection or an indirect connection through intermediate components without affecting the relationship and technical effects of the components, or may be an integral connection or a partial connection, as in this case, for a person skilled in the art, the specific meaning of the above terms in the present invention can be understood according to specific situations.

The foregoing description of the embodiments is provided to enable any person skilled in the art to make and use the embodiments, and it is to be understood that various modifications may be readily apparent to those skilled in the art, and that the generic principles defined herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present disclosure is not limited to the above embodiments, and modifications to the following cases should be included within the scope of the present disclosure: firstly, based on the technical scheme of the present invention and combined with the new technical scheme implemented by the prior common general knowledge, the technical effect generated by the new technical scheme does not exceed the technical effect of the present invention, for example, the corresponding technical scheme of the driving power supply formed by the power supply module, the DC/DC MCU power supply module and the MCU power supply control unit is adopted, and the technical scheme does not achieve the expected effect beyond the present invention; secondly, equivalent replacement of part of the characteristics of the technical scheme of the utility model by adopting the known technology produces the same technical effect as the utility model, for example, equivalent replacement is carried out on part of circuit elements adopted in the control unit; thirdly, the technical scheme of the utility model is expanded on the basis, and the essential content of the expanded technical scheme does not exceed the technical scheme of the utility model; fourthly, equivalent transformation is carried out by utilizing the text record content or the attached drawings of the specification of the utility model, and the obtained technical means is applied to other related fields.

Claims (10)

1. A switch dimming lamp driving power supply is used for adjusting the color temperature and the brightness of an LED lighting lamp simultaneously, and is characterized by comprising:

the power supply module is connected with a switch K1, the switch K1 is sequentially connected with elements D1, R5 and R6, and a switch detection circuit is formed by D1, R5, R6 and R8;

the MCU power supply control unit is used for sequentially connecting a No. 3 pin and a No. 4 pin of a chip of the MCU power supply control unit to an element Q2 and an element Q3 respectively, and controlling the on/off of the element Q2 and the element Q3 through an output level so as to facilitate the color temperature and brightness change of the LED lighting lamp;

and the DC/DC power supply module is respectively connected with the power supply module and the MCU power supply control unit.

2. The switched dimmer lamp driving power supply of claim 1, wherein: the power module adopts an AC/DC-CC/CV power module.

3. The switched dimmer lamp driving power supply of claim 1, wherein: and the MCU power supply control unit controls PWM output of the MCU power supply control unit by recognizing power failure detection.

4. The switched dimmer lamp driving power supply of claim 1, wherein: the switch K1 is in closed state, and is divided by the AC110/220V input D1, R5, R6 and R8, thereby outputting a ripple waveform of 0-4.5V.

5. The switched dimmer lamp driving power supply of claim 4, wherein: and the MCU power supply control unit detects the pulse waveform, judges the switch K1 to be closed and executes a corresponding program.

6. A switched dimmer lamp driving power supply as claimed in any one of claims 1-5, wherein: the MCU power supply control unit continuously detects four periods when detecting that the voltage division of D1, R5, R6 and R8 is 0V, so as to judge the off state of the switch K1.

7. An LED lighting lamp, characterized in that it has the switching dimming lamp driving power supply according to any one of claims 1-6, wherein two pins of the MCU power supply control unit chip are sequentially connected to the 5000K LED light source of the LED lighting lamp through the connection element Q2, to the 1850K LED light source of the LED lighting lamp through the connection element Q3, and different color temperatures are obtained through two pin output levels, and the states of the element Q2 and the element Q3 include:

the element Q3 is turned on, the element Q2 is turned off, the 1850K LED light source is lightened, and the illumination color temperature is 1850K;

the element Q3 is turned off, the element Q2 is turned on, the 5000K LED light source is lightened, and the illumination color temperature is 5000K;

when the element Q3 is conducted, the element Q2 is conducted, the 1850K LED light source and the 5000K LED light source are simultaneously lightened, and the illumination color temperature is 2975K.

8. The LED lighting lamp according to claim 7, characterized in that: and the 3 rd pin and the 4 th pin of the MCU power supply control unit chip output PWM duty ratio signals to control the element Q2 and the element Q3, change the current in a loop, distribute the current proportion and control the light flux proportion of the two color temperature LEDs so as to be mixed into 3425K, 4000K or other color temperatures.

9. The LED illumination lamp according to claim 7 or 8, characterized in that: the LED lighting lamp is in the state of lighting the 1850K LED light source, and the 5000K LED light source is not lighted.

10. The LED illumination lamp according to claim 7 or 8, characterized in that: the LED lighting lamp is in the state of lighting the 5000K LED light source, and the 1850K LED light source is not lighted.

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