Boost control circuit of LED lamp strip and LED lamp strip

Abstract

The utility model relates to the technical field of illumination, solves the technical problem that an LED lamp and a control module of an existing lamp strip are easy to damage in the prior art, and provides a boost control circuit of an LED lamp strip and the LED lamp strip. The boost control circuit of the LED lamp strip comprises a power supply module, a control module, a withstand voltage protection module and a light-emitting module comprising a plurality of LED lamps, the power supply module is electrically connected with a power supply to receive power supply voltage and output first voltage, a power connection end of the control module is electrically connected with the power supply module, and the voltage withstanding protection module comprises a power supply circuit at least comprising a first resistor and a voltage resistance circuit at least comprising a first triode which are connected. The light-emitting control signal output end of the control module is electrically connected with the input end of the power supply circuit, the output end of the voltage resistance circuit is electrically connected with the input end of the light-emitting module, and the power supply circuit and the voltage resistance circuit jointly reduce the first voltage into second voltage and output the second voltage to the light-emitting module. The LED lamp has the advantage that the LED lamp and the control module can be prevented from being damaged.

Description

TECHNICAL FIELD

[0001] The utility model relates to lighting technical field especially, relate to the boost control circuit and LED lamp area of LED lamp area. BACKGROUND

[0002] In recent years, with the rapid development of economy, the lighting industry has been widely developed, and the lamp area is applied to various lighting occasions.

[0003] However, the lamp area on the market at present mostly adopts low voltage such as 24V to supply power, and this kind of power supply mode leads to the current of the LED lamp and the control module input to the lamp area is large, thereby the LED lamp and the control module are easily damaged, and the lamp area is also easily caused to heat, thereby in order to avoid the heat area being too large, this kind of lamp area needs to be limited to the shorter length such as 5 meters, otherwise the head will appear dark and the tail will appear bright, and in actual use, the power supply needs to be connected every 5 meters, which is very inconvenient, and the application scene of the lamp area is limited.

[0004] Therefore, it is urgent to provide a boost control circuit and LED lamp area of LED lamp area which can avoid damaging the LED lamp and the control module. CONTENT OF UTILITY MODEL

[0005] The utility model discloses to the technical problem that the LED lamp and the control module of the existing lamp area are vulnerable to damage in the prior art, in order to realize the utility model one purpose, provides a kind of boost control circuit of LED lamp area, boost control circuit includes power module, control module, voltage-withstanding protection module and luminous module;Power module is electrically connected power supply to receive power supply voltage and output first voltage, the electricity receiving end of control module is electrically connected with power module, voltage-withstanding protection module includes the power supply circuit and the voltage blocking circuit being connected, the power supply circuit at least includes first resistance, the voltage blocking circuit at least includes first triode, luminous module includes multiple LED lamps, the input end of power supply circuit is electrically connected with the luminous control signal output end of control module, the output end of voltage blocking circuit is electrically connected with the input end of luminous module, and power supply circuit and voltage blocking circuit jointly reduce first voltage to second voltage and output second voltage to luminous module.

[0006] Further, the power supply circuit further comprises a second resistor, and the voltage stabilizing circuit further comprises a second transistor, two ends of the first resistor are electrically connected with the positive pole of the first power supply and the base of the first transistor respectively, two ends of the second resistor are electrically connected with the light-emitting control signal output end of the control module and the positive pole of the first power supply respectively, the first resistor is connected in series with the second resistor, the base of the first transistor is electrically connected with the end of the first resistor away from the positive pole of the first power supply and the collector of the second transistor respectively, the emitter of the first transistor and the emitter of the second transistor are grounded, the base of the second transistor is electrically connected with the end of the second resistor away from the positive pole of the first power supply and the light-emitting control signal output end of the control module respectively, and the collector of the second transistor is electrically connected with the input end of the light-emitting module.

[0007] Further, the control module is a control chip, the control chip comprises a power connection pin, a ground pin, a signal input pin, a signal output pin, at least one program writing pin and at least one light-emitting control signal pin as the light-emitting control signal output end, the power connection pin is electrically connected with the power supply module, the ground pin is grounded, the signal input pin and the signal output pin are used for receiving the input and output of signals respectively, the program writing pin is used for writing programs to the control chip, and the light-emitting control signal pin is used for controlling the light-emitting of the LED lamp of the corresponding light-emitting module.

[0008] Further, the power supply module comprises a power supply resistor, a first capacitor and a second capacitor, one end of the first capacitor is electrically connected with the power supply through the power supply resistor and the other end is grounded, one end of the second capacitor is electrically connected with the power supply and the other end is grounded, and the power connection pin is electrically connected with the power supply resistor, the first capacitor and the positive pole of the second power supply respectively.

[0009] Further, the light-emitting module comprises a plurality of serially connected LED lamps, and the light-emitting module is electrically connected with the power supply at an end away from the voltage protection module.

[0010] Further, at least one light-emitting resistor is connected in series between every two adjacent LED lamps of the plurality of serially connected LED lamps.

[0011] Further, the voltage protection module and the light-emitting module are both provided as four, the LED lamps of the four light-emitting modules are used for emitting white light, blue light, green light and red light respectively, the control chip comprises a white light-emitting control signal pin, a blue light-emitting control signal pin, a green light-emitting control signal pin and a red light-emitting control signal pin, and each voltage protection module comprises three interfaces which are electrically connected with a light-emitting module, the positive pole of the first power supply and a light-emitting control signal pin respectively.

[0012] Further, one of the interfaces of each of the four voltage protection modules is electrically connected with the positive pole of the first power supply in parallel, the power supply module is electrically connected with the negative pole of the power supply, the light-emitting module is electrically connected with the negative pole of the power supply at an end away from the voltage protection module, and the first transistor and the second transistor are both NPN transistors.

[0013] Further, the power supply voltage is 48V, and the second voltage is 24V.

[0014] To achieve another object of the present application, a LED lamp strip is provided, comprising the boost control circuit of any one of the above LED lamp strips.

[0015] The present application has the following advantages:

[0016] The boost control circuit of the LED lamp strip and the LED lamp strip provided by the present application can supply the first voltage to the voltage blocking circuit after sharing a certain voltage through the power supply circuit, and the voltage blocking circuit can block the high voltage from acting on the light emitting module, so that the voltage protection module shares and absorbs the voltage value reduced by reducing the power supply voltage to the second voltage, that is, the voltage protection module plays a role of voltage division, and the current value of the current flowing through the LED lamp and the control module in the entire lamp strip is significantly reduced, so as to avoid damaging the LED lamp and the control module, and the lamp strip is also less likely to cause heating, so as to effectively avoid the heating area being too large, and the lamp strip can be made longer, and the application scenarios of the lamp strip are significantly widened. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained on the premise of not creating labor, and these are within the protection scope of the present application.

[0018] Figure 1 The specific circuit diagram of the boost control circuit of the LED lamp strip provided by the embodiments of the present application is provided.

[0019] Figure 2 The specific circuit diagram of the voltage protection module of the boost control circuit of the LED lamp strip is provided. Figure 1

[0020] MARK DESCRIPTION:

[0021] 1, power module; RP, power resistor; C1, first capacitor; C2, second capacitor; 2, control module; 3, voltage protection module; R1, first resistor; R2, second resistor; Q1, first triode; Q2, second triode; 4, light emitting module; LEDW / LEDB / LEDG / LEDR, LED lamp; RW / RB / RG / RR, light emitting resistor. DETAILED DESCRIPTION

[0022] ​For the purpose, technical scheme and advantages of the embodiments of the present application to be clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. It should be noted that in this article, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between the entities or operations. In the description of the present application, it should be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the elements limited by the statement "include" do not exclude the presence of other identical elements in the process, method, article or device including the elements. If there is no conflict, the embodiments of the present application and various features in the embodiments can be combined with each other, and are all within the protection scope of the present application.

[0023] Reference Figure 1 and Figure 2, as a purpose of the utility model, the specification embodiment provides a kind of boost control circuit of LED lamp strip, boost control circuit includes power module 1, control module 2, voltage protection module 3 and light-emitting module 4.Power module 1 is electrically connected power supply to receive power supply voltage and output first voltage, the control module 2 is electrically connected with power module 1, voltage protection module 3 includes connected power supply circuit and voltage blocking circuit, power supply circuit at least includes first resistance R1, voltage blocking circuit at least includes first triode Q1, light-emitting module 4 includes multiple LED lamps, the light-emitting control signal output end of control module 2 is electrically connected with the input end of power supply circuit, the output end of voltage blocking circuit is electrically connected with the input end of light-emitting module 4, power supply circuit and voltage blocking circuit jointly reduce first voltage to second voltage and output second voltage to light-emitting module 4.In the utility model, power supply voltage uses 48V, based on the voltage required for normal work of commonly used LED lamp, second voltage uses 24V, and first voltage is substantially the same as the value of power supply voltage, so, by power supply circuit, first voltage can be shared certain voltage and supplied to voltage blocking circuit, voltage blocking circuit can block high voltage and act on light-emitting module 4, so, voltage protection module 3 shares, absorbs the voltage value reduced by reducing power supply voltage to second voltage, that is, voltage protection module 3 plays the role of voltage division, for the case that the power of lamp strip is certain, on the basis that power supply voltage is significantly improved compared with the second voltage required for normal work of LED lamp, the current value of current flowing through LED lamp and control module 2 in the entire lamp strip is significantly reduced, so as to avoid damaging LED lamp and control module 2, and it is also not easy to cause lamp strip heating, so as to effectively avoid that heating area is too large, and the voltage value supplied to lamp strip is set to be increased from existing 24V to, for example, 48V, to achieve the purpose of not damaging LED lamp and control module after voltage is improved and being able to meet the required current to more LED lamps, so as to make the lamp strip longer, such as length can be made more than 10 meters, significantly expand the application scenarios of lamp strip.

[0024] Please refer to Figure 2 , specifically, power supply circuit further includes second resistance R2, voltage blocking circuit further includes second triode Q2, the two ends of first resistance R1 are electrically connected with the anode of first power supply and the base of first triode Q1 respectively, the two ends of second resistance R2 are electrically connected with the light-emitting control signal output end of control module 2 and the anode of first power supply respectively, first resistance R1 and second resistance R2 are connected in series, the base of first triode Q1 is electrically connected with the one end of first resistance R1 and the collector of second triode Q2 respectively, the emitter of first triode Q1 and the emitter of second triode Q2 are grounded, the base of second triode Q2 is electrically connected with the one end of second resistance R2 and the light-emitting control signal output end of control module 2 respectively, the collector of second triode Q2 is electrically connected with the input end of light-emitting module 4, that is, as Figure 2As shown, the current flow direction in the voltage protection module 3 is from the lower left corner to the upper right corner. In this way, by setting the power supply circuit to have two resistors and the voltage blocking circuit to have two triodes, the power supply circuit and the voltage blocking circuit together have higher accuracy in reducing the voltage value, ensuring that the current flowing through the LED lights in the control module 2 and the light-emitting module 4 is closer to the desired lower current value than in the prior art, and more effectively avoids damage to the LED lights and the control module 2 caused by excessive current.

[0025] Please refer to Figure 1 In particular, the control module 2 is configured as a control chip, which includes a power connection pin, a ground pin, a signal input pin, a signal output pin, at least one program writing pin, and at least one light-emitting control signal pin as a light-emitting control signal output terminal. The power connection pin is electrically connected to the power supply module 1, the ground pin is grounded, the signal input pin and the signal output pin respectively receive the input and output of signals, the program writing pin is used to write programs to the control chip, and the light-emitting control signal pin is used to control the light-emitting of the LED lights of the corresponding light-emitting module 4. In this way, the control chip can reliably and accurately supply power and control the light-emitting of the LED lights.

[0026] Please refer to Figure 1 In particular, the power supply module 1 includes a power supply resistor RP, a first capacitor C1, and a second capacitor C2. One end of the first capacitor C1 is connected to the power supply through the power supply resistor RP and the other end is grounded. One end of the second capacitor C2 is connected to the power supply and the other end is grounded. The power connection pin is electrically connected to the power supply resistor RP, the first capacitor C1, and a second power supply positive electrode, respectively. Thus, the power supply module 1 has high working stability and reliability in outputting current and voltage.

[0027] Please refer to Figure 1 Preferably, the light-emitting module 4 includes a plurality of series-connected LED lights, and the end of the light-emitting module 4 away from the voltage protection module 3 is electrically connected to the power supply. In this way, the plurality of series-connected LED lights in each light-emitting module 4 can obtain the same relatively low current value of current flowing through, and any abnormal heating of the LED lights can be suppressed.

[0028] Please refer to Figure 1 Preferably, at least one light-emitting resistor is connected in series between every two adjacent LED lights of the plurality of series-connected LED lights. Therefore, by setting at least one light-emitting resistor, the voltage acting on the light-emitting module 4 can be further divided as needed to reduce the voltage distributed to each LED light.

[0029] Please refer to Figure 1, preferably, the voltage protection modules 3 and the light-emitting modules 4 are all four, the LED lamps LEDW, LEDB, LEDG and LEDR of the four light-emitting modules 4 are used to emit white light, blue light, green light and red light respectively, the control chip includes a white light-emitting control signal pin, a blue light-emitting control signal pin, a green light-emitting control signal pin and a red light-emitting control signal pin, and it can be known that the four light-emitting modules 4 have a light-emitting resistor RW, RB, RG and RR respectively, each voltage protection module 3 includes three interfaces, and the three interfaces are electrically connected with a light-emitting module 4, a first power supply positive pole and a light-emitting control signal pin respectively. Therefore, the boost control circuit of the LED lamp strip provided by the utility model can be applied to the working of the multi-color LED lamp, while providing a variety of light-emitting colors, ensuring that the various color LED lamps can work reliably, and the overall light-emitting effect will not be affected by the damage of any kind of LED lamp due to heating.

[0030] Please refer to Figure 1 and 2 , preferably, one of the interfaces of the four voltage protection modules 3 is electrically connected with the first power supply positive pole in parallel, and in the utility model, the first power supply positive pole and the second power supply positive pole can be collinear or be a same power supply positive pole, the power supply module 1 is electrically connected with the power supply negative pole, and the light-emitting module 4 is electrically connected with the power supply negative pole at the end away from the voltage protection module 3, and the first triode Q1 and the second triode Q2 are both NPN triodes. Therefore, the entire boost control circuit is compact in structure and stable and reliable in working.

[0031] As another purpose of the utility model, the utility model also provides a LED lamp strip, which includes the boost control circuit of the LED lamp strip of any one of the above embodiments, and the LED lamp strip can obtain the beneficial effects brought by the boost control circuit of the LED lamp strip of any one of the embodiments, which will not be repeated here. Therefore, the LED lamp strip has the advantage that damage to the LED lamp and the control module 2 can be avoided.

[0032] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the utility model, but not to limit them; although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that: the technical solutions recorded in the above embodiments can still be modified, or some or all of the technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and any modification, equivalent replacement and improvement made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A boost control circuit for an LED light strip, characterized by The voltage boosting control circuit comprises a power module, a control module, a voltage protection module and a light emitting module. The power module is electrically connected to a power source to receive a power voltage and output a first voltage, the control module is electrically connected to the power module, the voltage protection module comprises a power supply circuit and a voltage blocking circuit connected in series, the power supply circuit comprises at least a first resistor, the voltage blocking circuit comprises at least a first transistor, the light emitting module comprises a plurality of LED lamps, the light emitting control signal output end of the control module is electrically connected to the input end of the power supply circuit, the output end of the voltage blocking circuit is electrically connected to the input end of the light emitting module, and the power supply circuit and the voltage blocking circuit jointly reduce the first voltage to a second voltage and output the second voltage to the light emitting module.

2. The boost control circuit of claim 1, wherein, The power supply circuit further comprises a second resistor, the voltage blocking circuit further comprises a second transistor, two ends of the first resistor are electrically connected to a first power positive pole and a base of the first transistor respectively, two ends of the second resistor are electrically connected to the light emitting control signal output end of the control module and the first power positive pole respectively, the first resistor is connected in series with the second resistor, the base of the first transistor is electrically connected to one end of the first resistor away from the first power positive pole and a collector of the second transistor respectively, the emitter of the first transistor and the emitter of the second transistor are grounded, the base of the second transistor is electrically connected to one end of the second resistor away from the first power positive pole and the light emitting control signal output end of the control module respectively, and the collector of the second transistor is electrically connected to the input end of the light emitting module.

3. The boost control circuit of claim 2, wherein, The control module is a control chip, the control chip comprises a power connection pin, a ground pin, a signal input pin, a signal output pin, at least one program writing pin and at least one light emitting control signal pin as the light emitting control signal output end, the power connection pin is electrically connected to the power module, the ground pin is grounded, the signal input pin and the signal output pin are used for receiving signal input and output respectively, the program writing pin is used for writing program to the control chip, and the light emitting control signal pin is used for controlling the LED lamp of the corresponding light emitting module to emit light.

4. The boost control circuit of claim 3, wherein, The power module comprises a power resistor, a first capacitor and a second capacitor, one end of the first capacitor is electrically connected to the power source through the power resistor and the other end is grounded, one end of the second capacitor is electrically connected to the power source and the other end is grounded, and the power connection pin is electrically connected to the power resistor, the first capacitor and a second power positive pole respectively.

5. The boost control circuit of claim 3, wherein, The light emitting module comprises a plurality of LED lamps connected in series, and one end of the light emitting module away from the voltage protection module is electrically connected to the power source.

6. The boost control circuit of claim 5, wherein, At least one light emitting resistor is connected in series between every two adjacent LED lamps of the plurality of LED lamps connected in series.

7. The boost control circuit of claim 5, wherein, The voltage protection modules and the light emitting modules are all four, the LED lamps of the four light emitting modules are respectively used for emitting white light, blue light, green light and red light, the control chip includes a white light emitting control signal pin, a blue light emitting control signal pin, a green light emitting control signal pin and a red light emitting control signal pin, each voltage protection module includes three interfaces, and the three interfaces are respectively electrically connected with a light emitting module, a first power supply positive pole and a light emitting control signal pin.

8. The boost control circuit of claim 7, wherein, One interface of each of the four voltage protection modules is electrically connected with the first power supply positive pole in parallel, the power supply module is electrically connected with a power supply negative pole of the power supply, one end of the light emitting module away from the voltage protection module is electrically connected with the power supply negative pole, and the first triode and the second triode are both NPN triodes.

9. The boost control circuit of claim 1, wherein, The power supply voltage is 48V, and the second voltage is 24V.

10. LED light strip, characterized in that A boost control circuit comprising the LED lamp strip according to any one of claims 1 to 9.

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