A LED module with multi-stage switching color temperature light source

Abstract

The utility model relates to a LED module multi-stage switching color temperature light source, including a voltage conversion circuit, a driving circuit, a flash removal circuit, a switch switching color temperature circuit, a yellow lamp bead and a white lamp bead, the input end of the voltage conversion circuit is connected to the neutral line and the live line, the output end of the voltage conversion circuit is connected to the input end of the driving circuit, the output end of the driving circuit is connected to the input end of the flash removal circuit, the output end of the flash removal circuit is connected to the input end of the switch switching color temperature circuit, and the output end of the switch switching color temperature circuit is respectively connected to the yellow lamp bead and the white lamp bead, the utility model has multiple color temperature modes, the color of the light can be adjusted by a dial switch, so that the user group can choose the color temperature they like, and there are 3 groups of drivers, which has a more powerful driving ability. However, this scheme is mainly for ICs with built-in MOS tubes, not limited to 3 groups of drivers, and can be multiple groups of drivers used in parallel to drive a larger load to make a higher power lamp.

Description

Technical Field

[0001] The utility model relates to the technical field of lighting, in particular to an LED module with multi-stage switching color temperature light source. Background Art

[0002] Lighting is one of the most important uses of electricity for humans. With the development of technology, lamps are also being updated. Most existing lamps can only achieve a single color temperature. Multiple color temperatures can be achieved by toggling the switch. Because it is a high-voltage module, a high-voltage type of dip switch is required, which cannot be met by ordinary dip switches. The disadvantage is that the light source cannot be turned on when the switch fails. Utility Model Content

[0003] The utility model provides an LED module multi-stage switchable color temperature light source to solve the problem that the prior art can only achieve a single color temperature.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an LED module multi-stage switching color temperature light source, including a voltage conversion circuit, a driving circuit, a flash elimination circuit, a switch switching color temperature circuit, yellow lamp beads and white lamp beads, the input end of the voltage conversion circuit is connected to the neutral line and the live line, the output end of the voltage conversion circuit is connected to the input end of the driving circuit, the output end of the driving circuit is connected to the input end of the flash elimination circuit, the output end of the flash elimination circuit is connected to the input end of the switch switching color temperature circuit, and the output end of the switch switching color temperature circuit is respectively connected to the yellow lamp beads and the white lamp beads.

[0005] As a further technical solution of the utility model: the voltage conversion circuit includes a fuse FUSE, a capacitor CBD, a protection element MOV, a protection element MOV1, a winding resistor BX1 and a rectifier BD, one end of the fuse FUSE is connected to the live wire, the other end of the fuse FUSE is connected to the protection element MOV and the input port 2 of the rectifier BD, the input port 3 of the rectifier BD is connected to the other end of the protection element MOV and the winding resistor BX1, the other end of the winding resistor BX1 is connected to the neutral line, the output port 4 of the rectifier BD is connected to the capacitor CBD and the protection element MOV1, the other end of the protection element MOV1 is connected to the other end of the capacitor CBD, the output port 1 of the rectifier BD and the ground end, and the protection elements MOV and MOV1 are transient voltage suppression diodes or varistors.

[0006] As a further technical solution of the utility model: the driving circuit includes a driving chip U1, a driving chip U2, a driving chip U3, a diode D1, a capacitor CDD and a capacitor CPD, a pin PD of the driving chip U1 is connected to the capacitor CPD, the other end of the capacitor CPD is connected to the pin GND of the driving chip U1, the capacitor CL, the capacitor CDD, the anode of the diode TVS1, the resistor RB1, the resistor RCS1 and the ground terminal, a pin CSA of the driving chip U1 is connected to the resistor RCSA, the other end of the resistor RCSA is connected to the other end of the resistor RCS1 and the pin CS of the driving chip U1, the pin VDD of the driving chip U1 is connected to the other end of the capacitor CDD, and the pin VL of the driving chip U1 is connected to the other end of the capacitor CL. One end, the other end of the resistor RB1 and the resistor RA2, the other end of the resistor RA2 is connected to the resistor RA1, the other end of the resistor RA1 is connected to the resistor RL1, the positive electrode of the diode D1 and the output port 4 of the rectifier BD, the other end of the resistor RL1 is connected to the resistor RL2, the other end of the resistor RL2 is connected to the pin AL of the driving chip U1, the cathode of the diode D1 is connected to the resistor RDS1, the other end of the resistor RDS1 is connected to the capacitor EC1 and the resistor RDP1, the other end of the resistor RDP1 is connected to the other end of the capacitor EC1, the cathode of the diode TVS1, and the pin OUT of the driving chip U1, the pin PD of the driving chip U2 is connected to the capacitor CPD2, and the other end of the capacitor CPD2 is connected to the pin GN of the driving chip U2 D, capacitor CL2, capacitor CDD2, the anode of diode TVS2, resistor RB2, resistor RCS2 and the ground end, pin CSA of driver chip U2 is connected to resistor RCSA2, the other end of resistor RCSA2 is connected to the other end of resistor RCS2 and pin CS of driver chip U2, pin VDD of driver chip U2 is connected to the other end of capacitor CDD2, pin VL of driver chip U2 is connected to the other end of capacitor CL2, the other end of resistor RB2 and resistor RA4, the other end of resistor RA4 is connected to resistor RA3, the other end of resistor RA3 is connected to resistor RL3, the anode of diode D2 and output port 4 of rectifier BD, the other end of resistor RL3 is connected to resistor RL4, the other end of resistor RL4 The cathode of diode D2 is connected to resistor RDS2, the other end of resistor RDS2 is connected to capacitor EC2 and resistor RDP2, the other end of resistor RDP2 is connected to the other end of capacitor EC2, the cathode of diode TVS2, and pin OUT of driver chip U2, pin PD of driver chip U3 is connected to capacitor CPD3, the other end of capacitor CPD3 is connected to pin GND of driver chip U3, capacitor CL3, capacitor CDD3, the anode of diode TVS3, resistor RB3, resistor RCS3 and ground, pin CSA of driver chip U3 is connected to resistor RCSA, the other end of resistor RCSA is connected to the other end of resistor RCS3 and pin CS of driver chip U3,The pin VDD of the driving chip U3 is connected to the other end of the capacitor CDD3, the pin VL of the driving chip U3 is connected to the other end of the capacitor CL3, the other end of the resistor RB3 and the resistor RA6, the other end of the resistor RA6 is connected to the resistor RA5, the other end of the resistor RA5 is connected to the resistor RL5, the positive electrode of the diode D3 and the output port 4 of the rectifier BD, the other end of the resistor RL5 is connected to the resistor RL6, the other end of the resistor RL6 is connected to the pin AL of the driving chip U3, the negative electrode of the diode D3 is connected to the resistor RDS3, the other end of the resistor RDS3 is connected to the capacitor EC1 and the resistor RDP3, the other end of the resistor RDP3 is connected to the other end of the capacitor EC3, the negative electrode of the diode TVS3, and the pin OUT of the driving chip U3, the models of the driving chips U1, U2 and U3 are all ICNE2531AE. ,

[0007] As a further technical solution of the utility model: the anti-flash circuit includes a driving element U4, a diode ZD1, a resistor R13, a resistor R14 and a capacitor VC, pin 2 of the driving element U4 is connected to the capacitor VC, the resistor R14, the pin OUT of the chip U1, the pin OUT of the chip U2 and the pin OUT of the chip U3, pin 1 of the driving element U4 is connected to the anode of the voltage regulator tube ZD2, the other end of the capacitor VC, the resistor R13 and the other end of the resistor R14, pin 3 of the driving element U4 is connected to the cathode of the diode ZD1 and the other end of the resistor R13, and the driving element U4 is a MOS tube or an IC.

[0008] As a further technical solution of the utility model: the switch switching color temperature circuit includes a dip switch SW, port 2 of the dip switch SW is connected to port 3 of the dip switch SW, port 22 of the dip switch SW and pin 3 of the driving element U4, port 4 of the dip switch SW is connected to the cathode of the diode DL2, resistor RD1 and resistor RD3, port 11 of the dip switch SW is connected to the anode of the diode DL1 and the white lamp bead, port 33 of the dip switch SW is connected to the yellow lamp bead resistor RD2 and resistor RD4, the anode of the diode DL2 is connected to the other end of the resistor RD2 and the other end of the resistor RD4, and the other end of the yellow lamp bead is connected to the other end of the white lamp bead and the driving circuit.

[0009] As a further technical solution of the utility model: the yellow lamp bead is composed of a plurality of yellow LED lamps connected in series.

[0010] As a further technical solution of the utility model: the white lamp bead is composed of a plurality of white LED lamps connected in series.

[0011] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0012] This utility model has multiple color temperature modes, and the color of the light can be adjusted by the dip switch, allowing the user group to choose their favorite color temperature. It is equipped with 3 groups of drivers and has a stronger driving capability. At the same time, this product includes various shapes and structures: round, oval, rectangular, square, triangle, star, Y-shaped, arc, multi-segment arc and other shapes. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 This is the overall principle diagram of the DIP switch color-changing lamp of the utility model;

[0015] Figure 2 The utility model is a circuit diagram of a color-changing lamp with a dial switch. DETAILED DESCRIPTION

[0016] 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.

[0017] Embodiment 1:

[0018] The utility model provides Figure 1 The circuit shown is specifically an LED module multi-stage switching color temperature light source, including a voltage conversion circuit, a driving circuit, a flash removal circuit, a switch switching color temperature circuit, yellow lamp beads and white lamp beads. The input end of the voltage conversion circuit is connected to the neutral line and the live line, the output end of the voltage conversion circuit is connected to the input end of the driving circuit, the output end of the driving circuit is connected to the input end of the flash removal circuit, the output end of the flash removal circuit is connected to the input end of the switch switching color temperature circuit, and the output end of the switch switching color temperature circuit is connected to the yellow lamp beads and the white lamp beads respectively.

[0019] Embodiment 2:

[0020] On the basis of Example 1, Figure 2 As shown:

[0021] The voltage conversion circuit includes a fuse FUSE, a capacitor CBD, a protection element MOV, a protection element MOV1, a winding resistor BX1 and a rectifier BD, one end of the fuse FUSE is connected to the live wire, the other end of the fuse FUSE is connected to the protection element MOV and the input port 2 of the rectifier BD, the input port 3 of the rectifier BD is connected to the other end of the protection element MOV and the winding resistor BX1, the other end of the winding resistor BX1 is connected to the neutral line, the output port 4 of the rectifier BD is connected to the capacitor CBD and the protection element MOV1, the other end of the protection element MOV1 is connected to the other end of the capacitor CBD, the output port 1 of the rectifier BD and the ground end, and the protection elements MOV and MOV1 are transient voltage suppression diodes or varistors.

[0022] The driving circuit includes a driving chip U1, a driving chip U2, a driving chip U3, a diode D1, a capacitor CDD and a capacitor CPD. The pin PD of the driving chip U1 is connected to the capacitor CPD. The other end of the capacitor CPD is connected to the pin GND of the driving chip U1, the capacitor CL, the capacitor CDD, the anode of the diode TVS1, the resistor RB1, the resistor RCS1 and the ground terminal. The pin CSA of the driving chip U1 is connected to the resistor RCSA. The other end of the resistor RCSA is connected to the other end of the resistor RCS1 and the pin CS of the driving chip U1. The pin VDD of the driving chip U1 is connected to the other end of the capacitor CDD. The pin VL of the driving chip U1 is connected to the other end of the capacitor CL, the other end of the resistor RB1 and the resistor RA2. The other end of resistor RA2 is connected to resistor RA1, the other end of resistor RA1 is connected to resistor RL1, the positive electrode of diode D1 and output port 4 of rectifier BD, the other end of resistor RL1 is connected to resistor RL2, the other end of resistor RL2 is connected to pin AL of driver chip U1, the negative electrode of diode D1 is connected to resistor RDS1, the other end of resistor RDS1 is connected to capacitor EC1 and resistor RDP1, the other end of resistor RDP1 is connected to the other end of capacitor EC1, the cathode of diode TVS1 and pin OUT of driver chip U1, pin PD of driver chip U2 is connected to capacitor CPD2, the other end of capacitor CPD2 is connected to pin GND of driver chip U2, capacitor CL2, capacitor CDD2 and diode TVS2 The anode, resistor RB2, resistor RCS2 and ground terminal, pin CSA of driver chip U2 is connected to resistor RCSA2, the other end of resistor RCSA2 is connected to the other end of resistor RCS2 and pin CS of driver chip U2, pin VDD of driver chip U2 is connected to the other end of capacitor CDD2, pin VL of driver chip U2 is connected to the other end of capacitor CL2, the other end of resistor RB2 and resistor RA4, the other end of resistor RA4 is connected to resistor RA3, the other end of resistor RA3 is connected to resistor RL3, the positive electrode of diode D2 and output port 4 of rectifier BD, the other end of resistor RL3 is connected to resistor RL4, the other end of resistor RL4 is connected to pin AL of driver chip U2, the negative electrode of diode D2 Connect resistor RDS2, the other end of resistor RDS2 is connected to capacitor EC2 and resistor RDP2, the other end of resistor RDP2 is connected to the other end of capacitor EC2, the cathode of diode TVS2, and pin OUT of driver chip U2, pin PD of driver chip U3 is connected to capacitor CPD3, the other end of capacitor CPD3 is connected to pin GND of driver chip U3, capacitor CL3, capacitor CDD3, anode of diode TVS3, resistor RB3, resistor RCS3 and ground, pin CSA of driver chip U3 is connected to resistor RCSA, the other end of resistor RCSA is connected to the other end of resistor RCS3 and pin CS of driver chip U3, pin VDD of driver chip U3 is connected to the other end of capacitor CDD3,The pin VL of the driver chip U3 is connected to the other end of the capacitor CL3, the other end of the resistor RB3 and the resistor RA6. The other end of the resistor RA6 is connected to the resistor RA5. The other end of the resistor RA5 is connected to the resistor RL5, the positive electrode of the diode D3 and the output port 4 of the rectifier BD. The other end of the resistor RL5 is connected to the resistor RL6. The other end of the resistor RL6 is connected to the pin AL of the driver chip U3. The negative electrode of the diode D3 is connected to the resistor RDS3. The other end of the resistor RDS3 is connected to the capacitor EC1 and the resistor RDP3. The other end of the resistor RDP3 is connected to the other end of the capacitor EC3, the cathode of the diode TVS3 and the pin OUT of the driver chip U3. The models of the driver chips U1, U2 and U3 are all ICNE2531AE.

[0023] The anti-flash circuit includes a driving element U4, a diode ZD1, a resistor R13, a resistor R14 and a capacitor VC. Pin 2 of the driving element U4 is connected to the capacitor VC, the resistor R14, the pin OUT of the chip U1, the pin OUT of the chip U2 and the pin OUT of the chip U3. Pin 1 of the driving element U4 is connected to the anode of the voltage regulator tube ZD2, the other end of the capacitor VC, the resistor R13 and the other end of the resistor R14. Pin 3 of the driving element U4 is connected to the anode of the voltage regulator tube ZD1 and the other end of the resistor R13. The driving element U4 is a MOS tube or an IC.

[0024] The switch color temperature switching circuit includes a dip switch SW, port 2 of the dip switch SW is connected to port 3 of the dip switch SW, port 22 of the dip switch SW and pin 3 of the driving element U4, port 4 of the dip switch SW is connected to the cathode of the diode DL2, resistor RD1 and resistor RD3, port 11 of the dip switch SW is connected to the anode of the diode DL1 and the white lamp bead, port 33 of the dip switch SW is connected to the yellow lamp bead resistor RD2 and resistor RD4, the anode of the diode DL2 is connected to the other end of the resistor RD2 and the other end of the resistor RD4, and the other end of the yellow lamp bead is connected to the other end of the white lamp bead and the driving circuit.

[0025] The yellow lamp beads are composed of multiple yellow LED lamps connected in series. The white lamp beads are composed of multiple white LED lamps connected in series.

[0026] The working principle is as follows: the input AC power is converted into DC after passing through the rectifier circuit, which supplies power to the drive circuit on the one hand and drives the LED lamp beads on the other hand. Since the DC ripple after rectification is very large, there will be a high flicker after lighting the LED lamp, and a flash removal circuit is added to reduce the flicker of the light source. After the current passes through the LED lamp beads with different color temperatures, the circuit and size of the current are controlled by using a dip switch and other electronic components to adjust the different color temperatures. This design can currently be converted into three colors, and can be achieved by changing the color temperature of the lamp beads and the number of segments of the dip switch with the corresponding parts to achieve five colors / multi-colors. At the same time, an external dimmer can be connected for dimming control. This design uses a triple drive superposition method to increase the drive power and achieve better results.

[0027] This product can integrate the LED lamp bead part and the driving circuit part to make various integrated structural shapes. Common integrated structural shapes include rectangle, square, triangle, round, star, Y, arc, fan, strip, circle, etc. It is convenient for users to install the main body of the lamp simply and quickly.

[0028] This product can also separate the LED lamp bead part from the driving circuit part, and make the light strip into multiple small modules, which can be freely combined into square, triangle, U-shaped, circular, star, Y-shaped, arc, multi-segment arc, fan, strip, circle, letter, pattern and other shapes and structures. It is convenient for users to match various complex types of lamp bodies to achieve DIY effect.

[0029] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0030] In addition, it should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment have also been appropriately combined to form other implementation modes that are easy for those skilled in the art to understand.

Claims

1. An LED module with multi-stage switching color temperature light source, characterized in that: It includes a voltage conversion circuit, a driving circuit, a flash removal circuit, a switch color temperature circuit, a yellow lamp bead and a white lamp bead, wherein the input end of the voltage conversion circuit is connected to a neutral line and a live line, the output end of the voltage conversion circuit is connected to the input end of the driving circuit, the output end of the driving circuit is connected to the input end of the flash removal circuit, the output end of the flash removal circuit is connected to the input end of the switch color temperature circuit, and the output end of the switch color temperature circuit is connected to the yellow lamp bead and the white lamp bead respectively; The driving circuit includes a driving chip U1, a driving chip U2, a driving chip U3, a diode D1, a capacitor CDD and a capacitor CPD. The pin PD of the driving chip U1 is connected to the capacitor CPD. The other end of the capacitor CPD is connected to the pin GND of the driving chip U1, the capacitor CL, the capacitor CDD, the anode of the diode TVS1, the resistor RB1, the resistor RCS1 and the ground terminal. The pin CSA of the driving chip U1 is connected to the resistor RCSA. The other end of the resistor RCSA is connected to the other end of the resistor RCS1 and the pin CS of the driving chip U1. The pin VDD of the driving chip U1 is connected to the other end of the capacitor CDD. The pin VL of the driving chip U1 is connected to the other end of the capacitor CL, the other end of the resistor RB1 and the resistor RA2. The other end of the resistor RA2 is connected to the resistor RA1, the other end of the resistor RA1 is connected to the resistor RL1, the positive electrode of the diode D1 and the output port 4 of the rectifier BD, the other end of the resistor RL1 is connected to the resistor RL2, the other end of the resistor RL2 is connected to the pin AL of the driver chip U1, the cathode of the diode D1 is connected to the resistor RDS1, the other end of the resistor RDS1 is connected to the capacitor EC1 and the resistor RDP1, the other end of the resistor RDP1 is connected to the other end of the capacitor EC1, the cathode of the diode TVS1, and the pin OUT of the driver chip U1, the pin PD of the driver chip U2 is connected to the capacitor CPD2, the other end of the capacitor CPD2 is connected to the pin GND of the driver chip U2, the capacitor CL2, the capacitor CDD2, and the diode TV The positive electrode of S2, the resistor RB2, the resistor RCS2 and the ground end, the pin CSA of the driving chip U2 is connected to the resistor RCSA, the other end of the resistor RCSA is connected to the other end of the resistor RCS2 and the pin CS of the driving chip U2, the pin VDD of the driving chip U2 is connected to the other end of the capacitor CDD2, the pin VL of the driving chip U2 is connected to the other end of the capacitor CL2, the other end of the resistor RB2 and the resistor RA3, the other end of the resistor RA3 is connected to the resistor RA4, the other end of the resistor RA4 is connected to the resistor RL3, the positive electrode of the diode D1 and the output port 4 of the rectifier BD, the other end of the resistor RL3 is connected to the resistor RL4, the other end of the resistor RL4 is connected to the pin AL of the driving chip U2, the negative electrode of the diode D2 Connect resistor RDS2, the other end of resistor RDS2 is connected to capacitor EC2 and resistor RDP2, the other end of resistor RDP2 is connected to the other end of capacitor EC2, the cathode of diode TVS2, and pin OUT of driver chip U2, pin PD of driver chip U3 is connected to capacitor CPD3, the other end of capacitor CPD3 is connected to pin GND of driver chip U3, capacitor CL3, capacitor CDD3, the anode of diode TVS3, resistor RB3, resistor RCS3 and ground, pin CSA of driver chip U3 is connected to resistor RCSA, the other end of resistor RCSA is connected to the other end of resistor RCS3 and pin CS of driver chip U3, pin VDD of driver chip U3 is connected to the other end of capacitor CDD3,The pin VL of the driving chip U3 is connected to the other end of the capacitor CL3, the other end of the resistor RB3 and the resistor RA6. The other end of the resistor RA6 is connected to the resistor RA5. The other end of the resistor RA5 is connected to the resistor RL5, the positive electrode of the diode D3 and the output port 4 of the rectifier BD. The other end of the resistor RL5 is connected to the resistor RL6. The other end of the resistor RL6 is connected to the pin AL of the driving chip U3. The negative electrode of the diode D3 is connected to the resistor RDS3. The other end of the resistor RDS3 is connected to the capacitor EC1 and the resistor RDP3. The other end of the resistor RDP3 is connected to the other end of the capacitor EC3, the negative electrode of the diode TVS3 and the pin OUT of the driving chip U3. The models of the driving chips U1, U2 and U3 are all ICNE2531AE.

2. The LED module multi-stage switchable color temperature light source according to claim 1, characterized in that: The voltage conversion circuit includes a fuse FUSE, a capacitor CBD, a protection element MOV, a protection element MOV1, a winding resistor BX1 and a rectifier BD, one end of the fuse FUSE is connected to the live wire, the other end of the fuse FUSE is connected to the protection element MOV and the input port 2 of the rectifier BD, the input port 3 of the rectifier BD is connected to the other end of the protection element MOV and the winding resistor BX1, the other end of the winding resistor BX1 is connected to the neutral line, the output port 4 of the rectifier BD is connected to the capacitor CBD and the protection element MOV1, the other end of the protection element MOV1 is connected to the other end of the capacitor CBD, the output port 1 of the rectifier BD and the ground end, and the protection elements MOV and MOV1 are transient voltage suppression diodes or varistors.

3. The LED module multi-stage switchable color temperature light source according to claim 1, characterized in that: The anti-flash circuit includes a driving element U4, a diode ZD1, a resistor R13, a resistor R14 and a capacitor VC. Pin 2 of the driving element U4 is connected to the capacitor VC, the resistor R14, the pin OUT of the chip U1, the pin OUT of the chip U2 and the pin OUT of the chip U3. Pin 1 of the driving element U4 is connected to the anode of the voltage regulator tube ZD2, the other end of the capacitor VC, the resistor R13 and the other end of the resistor R14. Pin 3 of the driving element U4 is connected to the anode of the voltage regulator tube ZD1 and the other end of the resistor R13. The driving element U4 is a MOS tube or an IC.

4. The LED module multi-stage switchable color temperature light source according to claim 3, characterized in that: The switch switching color temperature circuit includes a dip switch SW, port 2 of the dip switch SW is connected to port 3 of the dip switch SW, port 22 of the dip switch SW and pin 3 of the driving element U4, port 4 of the dip switch SW is connected to the cathode of the diode DL2, resistor RD1 and resistor RD3, port 11 of the dip switch SW is connected to the anode of the diode DL1 and the white lamp bead, port 33 of the dip switch SW is connected to the yellow lamp bead resistor RD2 and resistor RD4, the anode of the diode DL2 is connected to the other end of the resistor RD2 and the other end of the resistor RD4, and the other end of the yellow lamp bead is connected to the other end of the white lamp bead and the driving circuit.

5. The LED module multi-stage switchable color temperature light source according to claim 4, characterized in that: The yellow lamp bead is composed of a plurality of yellow LED lamps connected in series.

6. The LED module multi-stage switchable color temperature light source according to claim 4, characterized in that: The white lamp beads are composed of a plurality of white LED lamps connected in series.

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