CN215773649U

CN215773649U - Light adjustable lamp controlled by common low-voltage type code drawing switch

Info

Publication number: CN215773649U
Application number: CN202121418937.2U
Authority: CN
Inventors: 武良举; 梁锦源
Original assignee: Vertex Lighting and Electrical Co Ltd
Current assignee: Vertex Lighting and Electrical Co Ltd
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2022-02-08
Anticipated expiration: 2031-06-24
Also published as: WO2022267830A1

Abstract

The utility model provides a dimmable lamp controlled by a common low-voltage type dial switch, which comprises: a rectifying unit for connecting an external power supply; the input end of the control unit is connected with the rectifying unit so as to control the obtained current; the protection units are at least three and are respectively arranged at the input end and the output end of the rectifying unit or the control unit; the input ends of the filtering unit and the stroboscopic removing control unit are connected to the output end of the control unit, the output end of the stroboscopic removing control unit is connected to the cathode output port of an LED lamp, the output end of the filtering unit is connected to the anode output port of the LED lamp, and the LED lamp is arranged at the output tail end of the integral power supply circuit; and a chromaticity control unit connected to both ends of the LED lamp to control a function of the LED lamp to selectively control a color temperature.

Description

Light adjustable lamp controlled by common low-voltage type code drawing switch

Technical Field

The utility model relates to the technical field of LED lamps, in particular to a dimmable lamp controlled by a common low-voltage type dial switch.

Background

At present, most of LED driving circuits are mainly of a switching power supply type, mainly include a flyback switching power supply, and generally include a rectifying circuit, a power stage circuit, and a control circuit. The rectification circuit receives alternating current commercial power, the alternating current commercial power is input into the power level circuit after being rectified by the rectification circuit, voltage conversion is carried out by the power level circuit, and the control circuit is used for controlling the on-off of a main power switch tube in the power level circuit, so that constant current driving is realized. However, the power stage circuit of the flyback switching power supply includes a transformer composed of the primary side and the secondary side, and the transformer occupies a large volume and is high in implementation cost.

In order to overcome the defects and shortcomings of the switching power supply type LED driving circuit, a linear constant current driving mode is adopted in the LED driving circuit, namely, the switching tube is controlled to work in a linear region, and the output current is regulated to keep the average output current constant. However, the existing LED linear constant current driving circuit has low efficiency; or the power factor can be reduced while the power conversion efficiency is improved; or the compatibility and smoothness of silicon controlled rectifier dimming can be influenced while higher conversion efficiency and high power factor are realized, so that the bad phenomenon that light flickers in the dimming use process of the LED lamp is easily caused.

In order to overcome the defects of the LED linear constant current driving circuit, a high-voltage type dial switch is arranged at the power output end of the LED driving circuit.

As shown in fig. 1, in the circuit of the technical solution, the silicon controlled dimming unit and the linear constant current unit are independently formed into two different functional module circuits, and each functional module unit is not easily interfered by signals during independent operation, so that not only dimming compatibility and smoothness can be ensured, but also a good linear adjustment rate can be ensured within a wide input voltage range.

Although the technical scheme is relatively stable in function, 1-2 linear constant current chips, corresponding power switch tubes and other devices on local circuits of the power switch tubes are additionally required to be added in circuit implementation, and energy is consumed to a certain extent, so that the power conversion efficiency and the power factor are reduced.

Meanwhile, if the technical scheme is to realize electrical functions such as stroboflash removal, low ripple, overvoltage protection, surge protection, a chromaticity selection switch circuit and the like, a stroboflash removal unit circuit, a filter unit circuit, a surge overvoltage protection circuit and the like are also needed to be added on the basis of the designed circuit, so that the cost price of the whole circuit is increased.

In another prior art as shown in fig. 2A and fig. 2B, in the circuit of this technical solution, following the conventional design method of the LED power circuit design which is relatively common in the industry, a voltage dependent resistor element which plays a surge over-protection function is arranged and connected after a rectifying unit located at the front end part of a power input end, and the voltage dependent resistor element is connected before a high-voltage linear constant-current dimming unit located at a power main circuit part, or the linear dimming unit and the high-voltage constant-current unit. The high-voltage linear constant-current dimming control unit can not only ensure dimming compatibility and smoothness, but also ensure good linear adjustment rate in a wider input voltage range. Meanwhile, the circuit design is simple, and the number of used components is small, so that the production cost of the power supply is reduced to a certain extent.

However, the circuit design scheme can only resist the high-voltage surge impact within 2000V, but is ineffective for the application occasions requiring the high-voltage surge protection of 2500V or more.

As shown in fig. 3A and fig. 3B, in the circuit of this technical solution, in order to achieve a good anti-surge protection function for the whole circuit, a surge overvoltage protection unit is provided at the front end of the circuit input, the load current suction pin of the high-voltage linear constant-current dimming control unit is connected to the rear part of the output end of the surge absorption unit, and the surge overvoltage protection unit is provided at the rear end of the high-voltage linear constant-current dimming control unit. The high-voltage linear constant-current dimming control unit can not only ensure dimming compatibility and smoothness, but also ensure good linear adjustment rate in a wider input voltage range. The circuit design of the scheme is simple, the number of used components is small, and therefore production cost is reduced to a certain extent.

However, since the power output terminals of the above three schemes are all high voltage type dial switches, in the using process, if a user performs the dial switch operation of color temperature selection switching in the power-on state, not only certain electric shock hazard exists, but also the service life of the dial switch element is affected to a certain extent by the electric shock generated by the instantaneous high voltage conduction generated in the switch switching process.

On the other hand, the price of the electrical component, such as the high-voltage type dial switch, is relatively expensive, so the LED dimming module and the lamp thereof similar to the circuit design scheme are correspondingly limited to a certain extent in price cost control.

In order to overcome the defects, the utility model provides a dimmable lamp, and the power output end of the driving circuit of the dimmable lamp adopts a cheap common low-voltage conduction type dial switch.

SUMMERY OF THE UTILITY MODEL

One advantage of the present invention is that it provides a dimmable light fixture controlled by a common low-voltage type dial switch, comprising a chromaticity selection switch unit, wherein the chromaticity selection switch unit is a common low-voltage conducting type dial switch, and since the price of the common low-voltage conducting type dial switch is cheaper than that of the high-voltage type dial switch, the chromaticity selection switch unit is used as a key element for implementing a color temperature selection control function, thereby saving the production and manufacturing costs of the dimmable light fixture to a great extent.

Another advantage of the present invention is that it provides a dimmable light fixture controlled by a common low-voltage type dial switch, comprising a chromaticity selection switch unit, wherein the chromaticity selection switch unit is a common low-voltage conducting type dial switch, which avoids the phenomenon of generating an instantaneous high voltage during the chromaticity switching operation in the power-on state, thereby avoiding the potential safety hazard of electric shock during the use, and simultaneously, also avoids the damage to the switch caused by the electric shock generated by the instantaneous high-voltage conduction, and effectively protects the service life of the dial switch.

Another advantage of the present invention is that it provides a dimmable light fixture controlled by a common low voltage type toggle switch, which realizes the function of selecting the color and temperature of the LED lamp by the sub-circuit design combining the common low voltage conduction type toggle switch and its corresponding one-way diodes D3 and D4, the circuit design is simpler, the number of used components is less, thereby reducing the volume of the driving circuit and the manufacturing cost of the driving circuit.

Another advantage of the present invention is that it provides a dimmable lamp controlled by a normal low-voltage type toggle switch, which includes a protection unit, and the input end and the output end of the rectification unit and the control unit both have at least one protection unit, so that the dimmable lamp has a multi-stage protection function, which not only can ensure dimming compatibility and smoothness, but also can ensure good linear adjustment rate and short-circuit protection function in a wider input voltage range, and has stronger surge overvoltage protection capability.

The utility model has another advantage that the dimmable lamp controlled by the common low-voltage type code drawing switch comprises a protection unit, and the input end and the output end of the rectifying unit and the control unit are respectively provided with at least one protection unit, so that the safety and the reliability of the dimmable lamp in the using process are greatly improved, and the product quality of the dimmable lamp is ensured.

Another advantage of the present invention is that it provides a dimmable light fixture controlled by a common low-voltage type toggle switch, which includes a filtering unit and a stroboscopic removal control unit, and not only can achieve good dimming compatibility and smoothness, but also can achieve practical use effects of bottom ripple, stroboscopic removal, and high power factor.

Other advantages and features of the present invention will become more fully apparent from the following detailed description.

In accordance with one aspect of the present invention, the foregoing and other objects and advantages are achieved in a dimmable light fixture controlled by a general low voltage type dial switch, comprising:

the rectifier unit is used for being connected with an external power supply so as to convert alternating current commercial power of the external power supply into direct current;

the input end of the control unit is connected with the rectifying unit so as to control the obtained direct current;

the protection units are multiple, and the input ends and the output ends of the rectification unit and the control unit are respectively provided with at least one protection unit so as to realize multi-stage overvoltage protection of the driving circuit and ensure the safety and the reliability of the driving circuit;

a filter unit and a stroboscopic control unit that removes, said filter unit with remove stroboscopic control unit input and be connected in control unit's output, it connects in a LED lamp negative pole output port to remove stroboscopic control unit's output, filter unit's output connect in LED lamp's positive pole output port, the LED lamp is set up in whole power supply circuit's output end to and

and the chromaticity control sub-circuit is connected with two ends of the LED lamp to control the function of selecting the color temperature of the LED lamp.

Specifically, the rectifying unit, the control unit, the protection unit, the filtering unit, the stroboscopic removal control unit and the chromaticity control unit are connected to form a driving circuit, when external electric energy is communicated with the rectifying unit, current is finally transmitted to the LED lamp to allow the LED lamp to stably work, and the chromaticity control unit connected to two ends of the LED lamp controllably selects the color temperature of the LED.

According to an embodiment of the present invention, the dimmable lamp further includes a dimming switch disposed at the input end of the rectifying unit.

According to one embodiment of the present invention, the number of the protection units is three, and the protection units are a first protection unit, a second protection unit and a third protection unit, wherein the first protection unit and the second protection unit are respectively arranged at an input end and an output end of the rectification unit; the first protection unit and the second protection unit are arranged at the input end of the control unit, the third protection unit is arranged at the output end of the control unit, and the control unit is ensured to output current linearly and constantly according to a preset control program through multi-stage overvoltage protection.

According to an embodiment of the present invention, the control unit is a high-voltage linear constant-current dimming control IC chip, and a peripheral sub-circuit composed of a plurality of resistors R and capacitors C corresponding to each pin of the IC chip.

According to an embodiment of the present invention, the chrominance control unit includes a chrominance selection switch unit, a chrominance output unit, and a voltage-stabilizing power supply unit, wherein one end of the chrominance selection switch unit is connected to the chrominance output unit, and the other end of the chrominance selection switch unit is connected to the voltage-stabilizing power supply unit; the chromaticity output unit is connected between the stroboscopic-removing control end element and the LED lamp; one end of the voltage-stabilizing power supply unit is connected with the LED lamp, and the other end of the voltage-stabilizing power supply unit is connected with the chromaticity selection switch unit.

According to an embodiment of the present invention, the chrominance selection switch unit is a common low-voltage conducting-type toggle switch.

According to an embodiment of the utility model, the main elements of the chromaticity output unit are power switching tubes Q2 and Q3, wherein the power switching tubes Q2 and Q3 are respectively connected with the LED lamp panel of the warm white color temperature and the LED lamp panel cathode output port of the cold white color temperature.

According to an embodiment of the present invention, the chrominance selection switch unit further comprises two unidirectional diodes D3 and D4.

According to an embodiment of the utility model, 4 preset working pins are arranged on the common low-voltage conduction type dial switch, the pins are respectively communicated with the corresponding one-way diodes D3 and/or D4, the one-way diodes D3 and D4 are respectively communicated with the power switch tubes Q2 and Q3, and the power switch tubes Q2 and Q3 are respectively connected with the corresponding LED lamp panels with different color temperatures.

Drawings

Fig. 1 is a schematic diagram of a circuit operating principle module of a dimmable lamp controlled by a high-voltage type dial switch in the prior art.

Fig. 2A is a schematic diagram of a circuit operating principle module of a dimmable lamp controlled by a high-voltage type dial switch in another prior art.

Fig. 2B is a schematic diagram of a circuit operation principle of another prior art dimmable lamp controlled by a high-voltage type dial switch.

Fig. 3A is a schematic diagram of a circuit operating principle module of a dimmable lamp controlled by a high-voltage type dial switch in the prior art.

Fig. 3B is a schematic diagram of a circuit operation principle of a dimmable lamp controlled by a high-voltage type dial switch in the prior art.

Fig. 4A is a schematic diagram of a circuit operating principle module of a dimmable lamp controlled by a common low-voltage type dial switch according to a preferred embodiment of the present invention.

Fig. 4B is a schematic diagram of a circuit operating principle of a dimmable lamp controlled by a common low-voltage type dial switch according to a preferred embodiment of the present invention.

Detailed Description

The following description is presented to disclose the utility model so as to enable any person skilled in the art to practice the utility model. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the utility model, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and thus the above terms are not to be construed as limiting the present invention.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

While ordinal numbers such as "first," "second," etc., will be used to describe various components, those components are not limited herein. The term is used only to distinguish one element from another. For example, a first component could be termed a second component, and, similarly, a second component could be termed a first component, without departing from the teachings of the present inventive concept. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The terminology used herein is for the purpose of describing various embodiments only and is not intended to be limiting. As used herein, the singular forms are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, numbers, steps, operations, components, elements, or combinations thereof, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, elements, or groups thereof.

The utility model is used for providing a dimmable lamp controlled by a common low-voltage type code drawing switch, the lamp is used as a lighting device, an LED lamp is usually used as a luminous carrier, and preferably, the LED lamp has the function of adjusting chromaticity and color temperature. Namely, under the control of the design circuit, after the lamp is connected with an external power supply, electric energy is transmitted to the LED lamp through the designed driving circuit, so that the LED lamp has the selectable functions of different chromaticities and color temperatures.

The dimmable light fixture is described in detail with reference to the accompanying drawings.

As shown in fig. 4A and 4B, the present invention provides a dimmable light fixture controlled by a common low-voltage type dial switch, which includes a rectifying unit 10, a control unit 20, a filtering unit 30, a stroboscopic-removing control unit 40, a chromaticity control unit 50, and a protection unit 60.

The rectifying unit 10, the control unit 20, the filtering unit 40, the stroboscopic removal control unit 50, the chromaticity control unit 50, and the protection unit 60 are all connected and fixed on a substrate to form a driving circuit. When external electric energy is communicated with the driving circuit, current is transmitted to the LED lamp, and the LED lamp can controllably select chromaticity and color temperature. At this time, the chromaticity control unit 50 is connected to both ends of the LED lamp, and the function of selectively controlling the color temperature of the LED lamp is achieved by the control of the chromaticity control unit 50.

Further, the dimmable lamp comprises a dimming switch 80 disposed at the input end of the rectifying unit 10, preferably, the dimming switch 80 is a thyristor dimmer.

Specifically, the rectifying unit 10 is used for being connected to an external power source 80 to obtain electric energy, wherein the main element of the rectifying unit 10 is a bridge stack BD 1. In general, the external power source 80 is 200V-240V ac mains, but the external power source 80 may have voltages in other ranges according to the requirements of different use environments. That is, the rectifying unit 10 is configured to receive the ac mains power provided by the external power source 80, and the ac power is rectified by the rectifying unit 10 to output the dc power.

The input end of the control unit 20 is connected to the output end of the rectifying unit 10, and after receiving the dc power rectified by the rectifying unit 10, the control unit 20 controls the received dc power to realize constant current output, so as to drive the LED lamp to work in a constant current manner.

Meanwhile, the output end of the control unit 20 is connected to the input ends of the filtering unit 30 and the stroboscopic removal control unit 40, the output ends of the filtering unit 30 and the stroboscopic removal control unit 40 are connected to the LED lamp, specifically, the output end of the stroboscopic removal control unit 40 is connected to the cathode output port of the LED lamp, the output end of the filtering unit 30 is connected to the anode output port of the LED lamp, and the LED lamp is arranged at the output end of the whole power circuit. Therefore, the externally input ac mains is input to the LED lamp in a constant current after passing through the rectifying unit 10, the control unit 20, the filtering unit 30, and the strobe-removed control unit 40, and at this time, the filtering unit 30 and the strobe-removed control unit 40 play roles in reducing ripple current and strobe depth in the driving circuit, so that the LED lamp can be used well without visible strobe.

In the present invention, the main elements of the filter unit 30 are electrolytic capacitors EC1 and EC2, and the main element of the stroboscopic removing control unit 40 is a stroboscopic removing control chip Q1.

Furthermore, to avoid the phenomenon of circuit short circuit or element damage caused by sudden voltage fluctuation, thereby affecting the operation of the whole circuit, ensuring the stability and safety of the driving circuit, the dimmable lamp further comprises a protection unit 60, wherein the input end and the output end of the rectifying unit 10 and the control unit 20 are both provided with at least one protection unit 60.

Specifically, the number of the protection units 60 is three, and the protection units are a first protection unit 61, a second protection unit 62 and a third protection unit 63, wherein the first protection unit 61 and the second protection unit 62 are respectively arranged at the input end and the output end of the rectification unit 10; the first protection unit 62 and the second protection unit 62 are arranged at the input end of the control unit 20, and the third protection unit 63 is arranged at the output end of the control unit 63, so that the control unit 20 is ensured to output current linearly and constantly according to a preset control program through multi-stage overvoltage protection.

In the utility model, the first protection unit 61 is a surge overvoltage protection unit, and the main element of the surge overvoltage protection unit is a voltage-sensitive group M1; the second protection unit 62 is a surge absorption unit, and the main element of the surge absorption unit is a metal film polypropylene capacitor, namely a CBB capacitor element, which can perform the functions of alternating current voltage reduction and absorption of instant impact current; the third protection unit 63 is a surge overvoltage protection unit, and its main component is a diac ZD3, which has specific electrical parameters.

Furthermore, the control unit 20 is configured as a main body, and specifically includes a high-voltage linear constant-current dimming control IC chip U1, and a peripheral sub-circuit composed of a plurality of resistors R and capacitors C corresponding to each pin of the IC chip U1.

The corresponding pins of the high-voltage linear constant-current dimming control chip U1 are shown in the following table:

pin number	Pin name	Description of functions
			1	AL	Active load current suction pin
2	VL	Alternating voltage VAC linear adjustment compensation control pin
			3	VDD	Internal voltage stabilizer bypass pin
4	PD	Phase detection and active load disable function setting pin
			5	GND	Chip grounding pin
6	CSA	Active load circuit current detection pin
			7	CS	Current detection pin
8	OUT	Pin connected with cathode of LED lamp string

In summary, the dimmable lamp adopts a circuit design scheme with a "multistage" surge overvoltage protection function, wherein a surge overvoltage protection unit 61 is arranged at the front end of the ac input of the rectification unit 10, the control unit 20 is connected to the rear part of the output end of the surge absorption unit 62, the surge overvoltage protection unit 63, the filter unit 30 and the stroboscopic removal control unit 40 at the rear end of the rectification unit are connected to the 8 th pin position of the high-voltage linear constant-current dimming control IC chip U1 of the control unit 20, which is correspondingly connected to the negative electrode port of the LED lamp, and the LED lamp module is connected to the rear end of the output of the stroboscopic removal control unit 40, that is, the LED lamp module is located at the output end of the overall power supply circuit.

Through the design, the safety and the reliability of the dimmable lamp in the using process are greatly improved, and the product quality of the dimmable lamp is guaranteed. The circuit design scheme has the advantages of relatively small quantity of used electronic components, simple circuit design and capability of simultaneously considering linear adjustment rate, high power factor and other aspects of service performance under the condition of realizing good silicon controlled rectifier dimming compatibility.

On the other hand, in the present novel usage, the LED lamp is a multicolor LED lamp panel, i.e. an LED lamp panel 71 with a warm white color temperature and an LED lamp panel 72 with a cool white color temperature, and in general, the color temperature of 1600K-3800K is the warm white color temperature, and the color temperature of 4200K-8000K is the cool white color temperature. The chromaticity control unit 50 is connected to both ends of the LED lamp panel 71 of the warm white color temperature and the LED lamp panel 72 of the cold white color temperature.

Further, the chromaticity control unit 50 includes a chromaticity selection switch unit 51, a chromaticity output unit 52, and a voltage-stabilizing power supply unit 53, wherein one end of the chromaticity selection switch unit 51 is connected to the chromaticity output unit 52, and the other end is connected to the voltage-stabilizing power supply unit 53; the chromaticity output unit 52 is connected between the stroboscopic-removing control end element 40 and the LED lamp; one end of the voltage-stabilizing power supply unit 53 is connected with the LED lamp, and the other end is connected with the chromaticity selection switch unit 51.

In the present invention, the chromaticity selection switch unit 51 is a three-gear or four-gear dial switch S1, preferably, the chromaticity selection switch unit 51 is a common low-voltage conducting type dial switch S1, and each gear output end of the dial switch corresponds to an LED lamp panel module formed by two or more sets of high-voltage LED lamp bead devices with different color temperatures, which are arranged in a certain serial-parallel manner.

The main elements of the chromaticity output unit 52 are power switching tubes Q2 and Q3, wherein the power switching tubes Q2 and Q3 are respectively connected with the LED lamp panel of the warm white color temperature and the LED lamp panel cathode output port of the cold white color temperature.

It is worth integrating that the chroma selection switch unit further comprises two unidirectional diodes D3 and D4. Work pin (S-a, S-b, S-c, S-D) are predetermine to 4 of the different colour temperature function gears that correspond on ordinary low pressure conduction type dial switch S1, it communicates with one-way diode D3 and/or D4 that correspond respectively, one-way diode D3 and D4 all with power switch pipe Q2 and Q3 intercommunication, power switch pipe Q2 and Q3 do not respectively with corresponding warm white color temperature 'S LED lamp plate with cold white color temperature' S LED lamp plate is connected.

In the utility model, the function of selecting the color temperature of the LED is realized by the design of a sub-circuit combined by the common low-voltage conducting type toggle switch S1 and the corresponding one-way diodes D3 and D4, and the main working principle is as follows:

4 preset working pins (S-a, S-b, S-c and S-d) with different color temperature function gears corresponding to the common low-voltage conduction type dial switch S1, wherein the connection gears of the S-a and the S-b correspond to the conduction work of the cold white LED lamp beads, and at the moment, the power switch tube Q3 is conducted and started to work; the connection gear of the S-b and the S-c corresponds to the condition that a warm white LED lamp bead and a cold white LED lamp bead are conducted simultaneously to work, at the moment, the power switch tubes Q2 and Q3 are conducted simultaneously and started to work, and the lamp corresponds to a neutral color temperature working mode; the connection gear of the S-c and the S-d corresponds to the conduction work of a warm white LED lamp bead, and at the moment, the power switch tube Q2 is started to work.

The specific labels of the dimmable light fixture of the present invention are: fuse resistors FR1, FR2, FR3, a bridge stack BD1, a high-voltage linear constant current control chip U1, a stroboscopic-removing control chip Q1, diodes D0, D1, D2, D3, rectified two lasers ZD1, ZD2, a bidirectional trigger diode ZD3, chip resistors R1, R2, R3, R4 … …, chip capacitors C0, C1, C2 … …, a piezoresistor M1, electrolytic capacitors EC1, EC2, power switch tubes (MOS tubes) Q2, Q3 and a common type code-pulling switch (a common 12V/50V low-voltage conduction type code-pulling switch).

The low-voltage conduction type code pulling switch S1 is relatively more in production manufacturer resources, simple in structural material and manufacturing process, low in price, and capable of reducing the manufacturing cost of the whole dimmable lamp integrally by adopting the code pulling switch.

Simultaneously, through the sub-circuit design that ordinary low pressure conduction type dial switch S1 and corresponding one-way diode D3 and D4 combine realizes LED colour temperature selection function, and the sub-circuit design that one-way diode D3 and D4 combine is simple, and occupation space is little, and the low price adopts this mode to carry out the adjustment of different colour temperatures, makes circuit design simpler, the volume is littleer, has also reduced to a certain extent the manufacturing cost of adjustable light lamps and lanterns.

Secondly, the adjustable light fixture can give consideration to the performances in various aspects such as linear adjustment rate, surge overvoltage protection, short-circuit protection and the like under the condition that no additional circuit or device is added, is also suitable for the requirement of multi-color-segment dimming, can achieve the actual effects of removing stroboflash and bottom ripples, reduces the number of used electronic elements, and reduces the manufacturing cost.

Those skilled in the art will appreciate that the embodiments of the utility model illustrated in the drawings and described above are merely exemplary and not limiting of the utility model.

It can thus be seen that the objects of the utility model are sufficiently well-attained. The embodiments for explaining the functional and structural principles of the present invention have been fully illustrated and described, and the present invention is not limited by changes based on the principles of these embodiments. Accordingly, this invention includes all modifications encompassed within the scope and spirit of the following claims.

Claims

1. By ordinary low pressure type dial switch control's lamps and lanterns of can adjusting luminance, its characterized in that includes:

the rectifier unit is used for being connected with an external power supply to convert alternating current commercial power of the external power supply into direct current;

at least three protection units respectively arranged at the input end and the output end of the rectifying unit or the control unit;

the input ends of the filtering unit and the stroboscopic removing control unit are connected to the output end of the control unit, the output end of the stroboscopic removing control unit is connected to the cathode output port of an LED lamp, the output end of the filtering unit is connected to the anode output port of the LED lamp, and the LED lamp is arranged at the output tail end of the integral power supply circuit; and

and the chromaticity control unit is connected with two ends of the LED lamp to control the function of selectively controlling the color temperature of the LED lamp.

2. The dimmable lamp set according to claim 1, wherein the control unit is a high-voltage linear constant-current dimming control IC chip, and a peripheral sub-circuit comprising resistors R and capacitors C corresponding to pins of the IC chip.

3. The dimmable light fixture controlled by the normal low voltage type toggle actuator according to claim 2, wherein the protection units are a first protection unit, a second protection unit, and a third protection unit, respectively, wherein the first protection unit and the second protection unit are respectively disposed at an input end and an output end of the rectifying unit; the first protection unit and the second protection unit are arranged at the input end of the control unit, and the third protection unit is arranged at the output end of the control unit.

4. The dimmable light fixture controlled by the normal low voltage type toggle switch according to claim 3, wherein the first protection unit is a surge overvoltage protection unit, and the main element of the first protection unit is a voltage-sensitive battery M1; the second protection unit is a surge absorption unit, and the main element of the second protection unit is a metal film polypropylene capacitor; the third protection unit is a surge overvoltage protection unit, and the main element of the third protection unit is a bidirectional trigger diode ZD 3.

5. The dimmable light fixture of claim 4, further comprising a dimmer switch disposed at the input of the rectifying unit, wherein the dimmer switch is a thyristor dimmer.

6. The dimmable light fixture controlled by a low voltage type dip switch as claimed in claim 5, wherein said LED light fixture is a multi-colored LED light panel.

7. The dimmable light fixture controlled by the normal low voltage type dip switch according to claim 6, wherein the chromaticity control unit comprises a chromaticity selection switch unit, a chromaticity output unit, and a voltage-stabilizing power supply unit, wherein one end of the chromaticity selection switch unit is connected to the chromaticity output unit, and the other end of the chromaticity selection switch unit is connected to the voltage-stabilizing power supply unit; the chromaticity output unit is connected between the stroboscopic-removing control end element and the LED lamp; one end of the voltage-stabilizing power supply unit is connected with the LED lamp, and the other end of the voltage-stabilizing power supply unit is connected with the chromaticity selection switch unit.

8. The dimmable light fixture of claim 7, wherein said chromaticity selection switch unit is a three-position or four-position dial switch.

9. The dimmable light fixture of claim 8, wherein said chromaticity selection switch unit is a normally low 12V/50V voltage conduction type dial switch.

10. The dimmable light fixture controlled by a normal low voltage type toggle switch according to claim 9, wherein the main components of the chromaticity output unit are power switching tubes Q2 and Q3, and the power switching tubes Q2 and Q3 are respectively connected to the negative output ports of the LED lamp panels with different color temperatures.

11. A dimmable light fixture as claimed in claim 10, wherein said low voltage conducting type dial switch has 4 preset operating pins (S-a, S-b, S-c, S-d) corresponding to different color temperature functional steps.

12. The dimmable lamp set controlled by the normal low voltage type dial switch according to claim 11, wherein the chromaticity selection switch unit further comprises two unidirectional diodes D3 and D4, 4 preset working pins on the normal low voltage conducting type dial switch are respectively communicated with the corresponding unidirectional diodes D3 and D4, the unidirectional diodes D3 and D4 are both communicated with the power switch tubes Q2 and Q3, and the power switch tubes Q2 and Q3 are respectively connected with the corresponding LED lamp panels with different color temperatures.

13. The dimmable light fixture controlled by a normal low voltage type toggle actuator according to claim 12, wherein the main components of the filter unit are electrolytic capacitors EC1 and EC2, and the main component of the stroboscopic removing control unit is a stroboscopic removing control chip Q1.