LED driving power supply with automatic power-on and power-off and brightness follow-up adjustment functions

Abstract

The utility model relates to the field of driving power supplies, and discloses an LED driving power supply with automatic on-off and brightness follow-up adjusting functions, which comprises a shell, a mounting plate is arranged at the lower end of the shell, a connecting rod is fixedly connected to the center of the lower end face of the shell, springs are respectively arranged in two placing grooves, and the connecting rod is fixedly connected with the mounting plate. The two springs are fixedly connected to the upper inner walls of the two containing grooves respectively, the lower ends of the two springs are fixedly connected with top beads respectively, a circuit board is arranged in the shell, the upper end of the circuit board is electrically connected with an MCU, the front end of the MCU is electrically connected with three resistors, a photoresistor is arranged on the rear side of the MCU, and the photoresistor is electrically connected with the circuit board. And a thermistor is arranged on the rear side of the photoresistor. According to the utility model, the MCU, the photoresistor and the thermistor are arranged inside, so that the function of intelligently adjusting the light intensity of the LED lamp according to the power-on duration of the power supply, the ambient light intensity and the internal temperature of the power supply is realized.

Description

Technical Field

[0001] The utility model relates to the field of driving power supplies, in particular to an LED driving power supply with automatic on / off and brightness follow-up adjustment functions. Background Art

[0002] LED driver power supply is a power converter that converts power supply into a specific voltage and current to drive LED to emit light. Normally, the input of LED driver power supply includes high-voltage industrial frequency AC (i.e. mains), low-voltage DC, high-voltage DC, low-voltage high-frequency AC (such as the output of electronic transformer), etc., while the output of LED driver power supply is mostly a constant current source that can change the voltage as the forward voltage drop value of the LED changes. The output port voltage of traditional LED driver power supply is usually 12V or 24V, and the output end is connected to LED lamp; LED lamp continues to emit light under the drive of power supply, and the power consumption is very high; in fact, LED light does not need to be powered on all the time, such as turning on when it is dark or the environment is dark, turning it off during the day or when the environment is very bright, and also turning it off late at night.

[0003] However, the existing driving power supply still has some shortcomings and areas for improvement during actual use. The existing operation methods are roughly divided into two types, one is manual and the other is automatic. Manual operation is cumbersome and requires human participation, and omissions often occur. The cost of timing switches or wireless switches is very high, and more professional personnel are required to install and operate the settings. Therefore, the market promotion of energy-saving LED driving power supplies is seriously affected, resulting in a large waste of electricity. At the same time, more costs need to be added when setting the automatic mode, and professional personnel are required to install the mode, which is very inconvenient to use. At the same time, the existing driving power supply cannot adjust the use position according to actual use after installation. Therefore, technicians in this field provide an LED driving power supply with automatic power on and off and brightness follow-up adjustment functions to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art, and to propose an LED driving power supply with automatic power on and off and brightness follow-up adjustment functions. By using an MCU, a thermistor, and a photoresistor, the function of intelligently adjusting the LED light intensity according to the power-on time, the ambient light intensity, and the internal temperature of the power supply is realized. At the same time, it can also intelligently sense the changes in 24 hours according to the changes in the brightness of the ambient light intensity within a day, and can intelligently correct the accuracy of the internal timing. It has the advantages of simple structure, low cost, and easy installation and use. A rotatable mounting plate is provided at the lower end of the shell. When in use, the installation position during use can be adjusted by rotating the angle between the shell and the mounting plate. After the adjustment is completed, the top bead is clamped in the inside of the positioning hole to complete the positioning.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an LED driving power supply with automatic power on / off and brightness follow-up adjustment functions, comprising a shell, a mounting plate is provided at the lower end of the shell, a connecting rod is fixedly connected to the center of the lower end surface of the shell, placement grooves are respectively provided on the lower end surfaces of the shell on both sides of the front and rear of the connecting rod, springs are respectively provided inside the two placement grooves, the upper ends of the two springs are respectively fixedly connected to the upper inner walls of the two placement grooves, and the lower ends of the two springs are respectively fixedly connected to top beads, a connecting hole is opened at the center of the upper end surface of the mounting plate, and a plurality of positioning holes are provided around the connecting hole, a circuit board is provided inside the shell, the upper end of the circuit board is electrically connected to an MCU, the front end of the MCU is electrically connected to three resistors, a photoresistor is provided on the rear side of the MCU, a thermistor is provided on the rear side of the photoresistor, and the photoresistor and the thermistor are respectively electrically connected to the MCU;

[0006] Through the above technical scheme, by using an MCU, a thermistor, and a photoresistor, the function of intelligently adjusting the LED light intensity according to the power-on time, the ambient light intensity, and the internal temperature of the power supply is realized. At the same time, it can also intelligently sense the changes in 24 hours according to the changes in the brightness of the ambient light intensity within a day, and can intelligently correct the accuracy of the internal timing. It has the advantages of simple structure, low cost, and easy installation and use. A rotatable mounting plate is provided at the lower end of the shell. When in use, the installation position can be adjusted by rotating the angle between the shell and the mounting plate. After the adjustment is completed, the top bead is clamped in the inside of the positioning hole to complete the positioning.

[0007] Furthermore, a plurality of the positioning holes are provided in a circular array at the center of the upper end surface of the mounting plate;

[0008] Through the above technical solution, the shell can be rotated in a circle on the mounting plate, so that the position during use can be adjusted easily.

[0009] Furthermore, the specifications of the three resistors are R60, R61 and R68 respectively;

[0010] Through the above technical solution, resistors of different specifications correspond to different pins of the MCU.

[0011] Furthermore, two mounting holes are respectively arranged at the center of the upper end surface of the mounting plate near the edges on both sides, and the lower ends of the four mounting holes respectively penetrate the upper end surface of the mounting plate and pass to the lower end;

[0012] The above technical solution is used to install the mounting plate at a designated position.

[0013] Furthermore, a plurality of heat dissipation fins are provided on the upper end surface of the shell;

[0014] Through the above technical solution, the internal circuit board will generate excessive heat when working for a long time.

[0015] Furthermore, a nameplate is fixedly connected to the center of one side wall of the shell;

[0016] Through the above technical solution, it is easy to observe the specifications and parameters of the driving power supply.

[0017] Furthermore, the top bead and the positioning hole are adapted to each other;

[0018] Through the above technical solution, the rotational position between the shell and the mounting plate can be better positioned.

[0019] Further, the lower end of the connecting rod is rotatably connected to the inside of the connecting hole;

[0020] Through the above technical solution, the rotation angle can be better adjusted.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, by using an MCU, a thermistor, and a photoresistor, the function of intelligently adjusting the LED light intensity according to the power-on time, the ambient light intensity, and the internal temperature of the power supply is realized.

[0023] 2. In the utility model, by setting a photoresistor, the change of 24-hour time can be intelligently sensed according to the brightness change of the ambient light intensity within a day, and the accuracy of internal timing can be intelligently corrected. It has the advantages of simple structure, low cost and easy installation and use.

[0024] 3. In the utility model, a rotatable mounting plate is provided at the lower end of the shell. When in use, the installation position can be adjusted by rotating the angle between the shell and the mounting plate. After the adjustment is completed, the top bead is clamped in the inside of the positioning hole to complete the positioning, which is convenient for use during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is an isometric view of an LED driving power supply with automatic power on / off and brightness follow-up adjustment functions proposed by the utility model;

[0026] Figure 2 This is an isometric view of a mounting plate in an LED driving power supply with automatic on / off and brightness follow-up adjustment functions proposed by the utility model;

[0027] Figure 3This is a partial cross-sectional view of an LED driving power supply with automatic power on / off and brightness follow-up adjustment functions proposed by the utility model;

[0028] Figure 4 The utility model discloses a circuit diagram of an LED driving power supply with automatic on / off and brightness follow-up adjustment functions.

[0029] Legend:

[0030] 1. Shell; 2. Mounting plate; 3. Mounting hole; 4. Nameplate; 5. Heat sink fin; 6. Connection hole; 7. Positioning hole; 8. Placement slot; 9. Spring; 10. Connecting rod; 11. Top bead; 12. MCU; 13. Photoresistor; 14. Thermistor; 15. Resistor. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Reference Figure 1-4 The utility model provides an embodiment: an LED driving power supply with automatic power on / off and brightness follow-up adjustment functions, including a shell 1, a mounting plate 2 is provided at the lower end of the shell 1, a connecting rod 10 is fixedly connected at the center of the lower end surface of the shell 1, and placement grooves 8 are respectively provided on the lower end surface of the shell 1 on both sides of the connecting rod 10, and springs 9 are respectively provided inside the two placement grooves 8. The upper ends of the two springs 9 are respectively fixedly connected to the upper inner walls of the two placement grooves 8, and the lower ends of the two springs 9 are respectively fixedly connected to top beads 11. A connecting hole 6 is opened at the center of the upper end surface of the mounting plate 2, and a plurality of Positioning hole 7, a circuit board is arranged inside the shell 1, the upper end of the circuit board is electrically connected to MCU12, the front end of MCU12 is electrically connected to three resistors 15, a photoresistor 13 is arranged on the rear side of MCU12, a thermistor 14 is arranged on the rear side of the photoresistor 13, the photoresistor 13 and the thermistor 14 are electrically connected to MCU12 respectively, the thermistor 14 can intelligently adjust the LED light intensity according to the dimensions of the circuit board inside the shell 1, and the photoresistor 13 can intelligently sense the change of 24-hour time according to the brightness change of the ambient light intensity within a day, and can intelligently correct the accuracy of the internal timing.

[0033] After the MCU 12 is powered on, the 5th, 6th, and 7th pins output a low level; and the ADC inside the MCU 12 starts to measure the temperature of the thermistor 14, the ambient light intensity sensed by the photoresistor 13, and starts timing;

[0034] When the ambient light intensity is lower than a certain value and the timing reaches 3 hours, MCU12 adjusts pin 7 to a high level, which will reduce the brightness of the LED light to 75% through the feedback loop composed of U3P1 and other circuits;

[0035] When the ambient light intensity is lower than a certain value and the timing reaches 5 hours, MCU12 adjusts pin 6 to a high level, which will reduce the brightness of the LED light to 50% through the feedback loop composed of U3P1 and other circuits;

[0036] When the ambient light intensity is lower than a certain value and the timing reaches 7 hours, MCU12 adjusts pins 6 and 7 to a high level, which will reduce the brightness of the LED light to 40% through the feedback loop formed by U3 P1 and other circuits;

[0037] When the ambient light intensity is lower than a certain value and the timing time reaches 8 hours, MCU12 adjusts pin 5 to a high level, which will turn off the LED light through the feedback loop formed by U3 P1 and other circuits;

[0038] When the temperature is higher than a certain value, MCU12 adjusts pin 7 to a high level, which will reduce the brightness of the LED lamp to 75% through the feedback loop composed of circuits such as U3 P1 to reduce the heat of the driving power supply and avoid damage to the LED driving power supply due to excessive temperature.

[0039] MCU12 will record the changes in light intensity every day and correct the internal timing accuracy, avoiding the use of expensive clocks and batteries.

[0040] A plurality of positioning holes 7 are provided in a circular array at the center of the upper end surface of the mounting plate 2, so that the shell 1 can be rotated in a circle on the mounting plate 2, which is convenient for adjusting the position during use. The specifications of the three resistors 15 are R60, R61 and R68 respectively, and resistors of different specifications correspond to different pins of the MCU 12. Two mounting holes 3 are respectively provided at the center of the upper end surface of the mounting plate 2 near the edges on both sides. The lower ends of the four mounting holes 3 respectively penetrate the upper end surface of the mounting plate 2 and pass to the lower end. A plurality of heat dissipating fins 5 are provided on the upper end surface of the shell 1, and a nameplate 4 is fixedly connected to the center of one side wall of the shell 1. The top bead 11 and the positioning hole 7 are adapted to each other, and the lower end of the connecting rod 10 is rotatably connected to the inside of the connecting hole 6. When in use, the installation position during use can be adjusted by rotating the angle between the shell 1 and the mounting plate 2. After the adjustment is completed, the top bead 11 is clamped in the inside of the positioning hole 7 to complete the positioning.

[0041] Working principle: The utility model is an LED driving power supply with automatic power on / off and brightness follow-up adjustment functions. After MCU12 is powered on, pins 5, 6, and 7 output low levels; and the ADC inside MCU12 starts to measure the temperature of the thermistor 14, the ambient light intensity sensed by the photoresistor 13, and starts timing; when the ambient light intensity is lower than a certain value and the timing time reaches 3 hours, MCU12 adjusts pin 7 to a high level, which will reduce the brightness of the LED lamp to 75% through the feedback loop composed of circuits such as U3 P1; when the ambient light intensity is lower than a certain value and the timing time reaches 5 hours, MCU12 adjusts pin 6 to a high level, which will reduce the brightness of the LED lamp to 50% through the feedback loop composed of circuits such as U3 P1; when the ambient light intensity is lower than a certain value and the timing time reaches 7 hours, MCU12 adjusts pins 6 and 7 to high levels, which will The feedback loop composed of circuits such as P1 lowers the brightness of the LED lamp to 40%; when the ambient light intensity is lower than a certain value and the timing time reaches 8 hours, MCU12 adjusts pin 5 to a high level, which will turn off the LED lamp through the feedback loop composed of circuits such as U3 P1; when the temperature is higher than a certain value, MCU12 adjusts pin 7 to a high level, which will lower the brightness of the LED lamp to 75% through the feedback loop composed of circuits such as U3 P1, so as to reduce the heat generation of the driving power supply and avoid damage to the LED driving power supply due to excessive temperature; MCU12 will record the changes in light intensity every day, correct the internal timing accuracy, avoid the use of expensive clocks and batteries, and at the same time, the installation position during use can be adjusted by rotating the angle between the shell 1 and the mounting plate 2. After the adjustment is completed, the top bead 11 is clamped in the inside of the positioning hole 7 to complete the positioning.

[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An LED driving power supply with automatic power on / off and brightness follow-up adjustment functions, comprising a housing (1), characterized in that: A mounting plate (2) is provided at the lower end of the shell (1), a connecting rod (10) is fixedly connected at the center of the lower end surface of the shell (1), placement grooves (8) are respectively provided on the lower end surfaces of the shell (1) at the front and rear sides of the connecting rod (10), springs (9) are respectively provided inside the two placement grooves (8), the upper ends of the two springs (9) are respectively fixedly connected to the upper inner walls of the two placement grooves (8), the lower ends of the two springs (9) are respectively fixedly connected to top beads (11), and the center of the upper end surface of the mounting plate (2) is A connection hole (6) is provided, and a plurality of positioning holes (7) are provided around the connection hole (6); a circuit board is provided inside the housing (1); the upper end of the circuit board is electrically connected to an MCU (12); the front end of the MCU (12) is electrically connected to three resistors (15); a photoresistor (13) is provided on the rear side of the MCU (12); a thermistor (14) is provided on the rear side of the photoresistor (13); and the photoresistor (13) and the thermistor (14) are electrically connected to the MCU (12) respectively.

2. The LED driving power supply with automatic power on / off and brightness follow-up adjustment functions according to claim 1, characterized in that: The plurality of positioning holes (7) are arranged in a circular array at the center of the upper end surface of the mounting plate (2).

3. The LED driving power supply with automatic power on / off and brightness follow-up adjustment functions according to claim 1, characterized in that: The specifications of the three resistors (15) are R60, R61 and R68 respectively.

4. The LED driving power supply with automatic power on / off and brightness follow-up adjustment functions according to claim 1, characterized in that: Two mounting holes (3) are respectively arranged at the center of the upper end surface of the mounting plate (2) near the edges on both sides, and the lower ends of the four mounting holes (3) respectively penetrate the upper end surface of the mounting plate (2) and extend to the lower end.

5. The LED driving power supply with automatic power on / off and brightness follow-up adjustment functions according to claim 1, characterized in that: A plurality of heat dissipation fins (5) are arranged on the upper end surface of the housing (1).

6. The LED driving power supply with automatic power on / off and brightness follow-up adjustment functions according to claim 1, characterized in that: A nameplate (4) is fixedly connected to the center of one side wall of the housing (1).

7. The LED driving power supply with automatic power on / off and brightness follow-up adjustment functions according to claim 1, characterized in that: The top bead (11) and the positioning hole (7) are adapted to each other.

8. The LED driving power supply with automatic power on / off and brightness follow-up adjustment functions according to claim 1, characterized in that: The lower end of the connecting rod (10) is rotatably connected to the inside of the connecting hole (6).

Images