CN108870107A - A kind of LED light of color-temperature regulating - Google Patents

Abstract

The invention relates to the field of lighting technology, in particular to an LED lamp with color temperature; the invention includes a lamp cap, a lamp body, a lampshade, a driver board of color temperature and a lamp board, and a light-emitting module is installed on the lamp board, and the light-emitting module includes At least two LED lamp beads; the color temperature driving board is provided with a color temperature chip; The input end of the board passes through the lamp body and is electrically connected to the lamp head, the output end of the color temperature driver board is electrically connected to the lamp board, and the color temperature chip on the color temperature driver board controls the power supply of the light-emitting module on and off Realize the color temperature conversion of the LED lights on the light-emitting module; the invention is compact overall, small in overall volume, relatively low in cost, and easy to operate.

Description

LED lamp with color temperature

technical field

The invention relates to the technical field of lighting, in particular to an LED lamp with color-tuned temperature.

Background technique

With the continuous expansion of the application range of LED lighting, LED lighting has gradually developed from the most simple lighting function to the direction of intelligence, humanization and energy saving. In order to meet people's requirements for lighting in different scenarios, LED lighting fixtures with the function of switching color temperature have emerged as the times require.

LED technology is becoming more and more mature, but most of the LED lamps currently have a single color temperature. These mainstream lighting products cannot realize the adjustment function of color temperature. Each power supply drives LED lamp beads with two color temperatures, and the color temperature of the input switch is to control the switch of each power supply in the dual constant current power supply system by turning on and off the input switch, so as to realize the color temperature conversion of LED lamps. Every time the input switch is turned on and off, the LED light strings that are turned on will change once, and the conduction sequence of the LED light strings will change cyclically as the input switch is turned on and off. Since it is necessary to detect the action of the input switch, it is necessary to design a special detection circuit to detect the input terminal; some even use 2.4G remote control dimming controller to realize the color temperature adjustment of the lamp, the cost is high, and the volume of the overall power supply Large, low power supply efficiency.

Contents of the invention

In order to overcome the above-mentioned deficiencies, the purpose of the present invention is to provide an LED lamp with color temperature, which uses the color temperature chip on the color temperature driver board to control the power supply on and off of the light emitting module, so as to realize the lighting of the light emitting module. The color temperature conversion of the LED lamp has the advantages of simple structure, convenient operation, relatively low cost and small overall volume.

The technical scheme that the present invention solves its technical problem is:

An LED lamp with color temperature, comprising a lamp base, a lamp body and a lamp shade, one end of the lamp body is connected to the lamp base, and the other end of the lamp body is covered by the lamp shade, wherein the color temperature is also included A driving board and a lamp board, the lamp board is equipped with a light-emitting module, and the light-emitting module includes at least two LED lamp beads; the color temperature driving board is provided with a power supply channel for controlling the light-emitting module A broken color temperature chip; the color temperature driving board is arranged in the lamp body, and the input end of the color temperature driving board passes through the lamp body and is electrically connected to the lamp head. The output end of the driving board is electrically connected to the lamp board, and the lamp board is arranged in the lamp body and directly above the color temperature driving board.

As an improvement of the present invention, the color temperature chip is provided with a safety circuit for cutting off the power when a fault occurs, a rectification circuit for rectifying alternating current into direct current, and a rectifying circuit for filtering out the rectification circuit. A filter circuit for the output ripple, a drive control unit for controlling the logic on and off of the power supply of the lighting module, and an output circuit for executing the control command of the drive control unit.

As a further improvement of the present invention, the drive control unit includes an IC controller, an IC startup circuit for supplying power to the IC controller, a switch detection circuit for providing a detection signal to the IC controller, and a circuit for limiting Current limiting circuit for maximum output current and overvoltage protection circuit for limiting maximum output voltage.

As a further improvement of the present invention, the IC startup circuit includes a resistor R1 and a capacitor C2 connected in series, and the connection point where one end of the resistor R1 is connected to one end of the capacitor C2 is connected to the VCC end of the IC controller; The switch detection circuit includes a diode D1 and a resistor R2 connected in series, one end of the resistor R2 is connected to the diode D1, and the other end of the resistor R2 is connected to the SW end of the IC controller.

As a further improvement of the present invention, the current limiting circuit includes a resistor R3 connected to the CS terminal of the IC controller; the overvoltage protection circuit includes a resistor R4 connected to the ROVP terminal of the IC controller.

As a further improvement of the present invention, the insurance circuit includes a fuse F1; the rectification circuit includes a rectification bridge composed of four diodes; and the filter circuit includes a filter capacitor C1.

As a further improvement of the present invention, the output circuit includes a controlled switch Q1, a controlled switch Q2 and a controlled switch Q3, the controlled switch Q1 is connected to the OUTA terminal of the IC controller, and the controlled switch Q2 is connected to the IC controller The OUTB end is connected, and the controlled switch Q3 is connected with the OUTC end of the IC controller.

As a further improvement of the present invention, the output circuit also includes an inductor L1 and a passive switch D2; the light-emitting module includes a first LED lamp and a second LED lamp; one end of the inductor L1 is connected to one end of the controlled switch Q2, One end of the controlled switch Q3 is connected, the other end of the inductor L1 is respectively connected with the controlled switch Q1 and one end of the passive switch D2, and the other end of the passive switch D2 is respectively connected with one end of the first LED light, one end of the second LED light, IC The GDN end of the controller is connected, the other end of the controlled switch Q2 is connected with the other end of the first LED lamp, and the other end of the controlled switch Q3 is connected with the other end of the second LED lamp.

As a further improvement of the present invention, the lamp board is connected to the heat-conducting aluminum plate through screws, and the heat-conducting aluminum plate is closely attached to the color temperature driving board.

As a further improvement of the present invention, thermal conductive paste is coated on the lamp board.

In the present invention, both the color temperature driving board and the lamp board are arranged in the lamp body to form an integrated LED lamp. The input end of the color temperature driving board passes through the lamp body and is electrically connected to the lamp head. The output end is electrically connected to the lamp board, and the color temperature chip on the color temperature driver board controls the power supply on and off of the light emitting module to realize the color temperature conversion of the LED lamp on the light emitting module; the present invention is overall compact and small in size , the cost is relatively low, and the operation is convenient.

Description of drawings

For ease of illustration, the present invention is described in detail by the following preferred embodiments and accompanying drawings.

Fig. 1 is an explosion diagram of the present invention;

Fig. 2 is the internal circuit diagram of the color temperature chip of the present invention;

Fig. 3 is a schematic diagram of the internal connection structure of the IC controller of the present invention;

Fig. 4 is a state diagram of switching sequence mode1 during operation of the present invention;

FIG. 5 is a state diagram of switching sequence mode2 during operation of the present invention;

FIG. 6 is a state diagram of switching sequence mode3 during operation of the present invention;

Reference signs: 1-lamp holder, 2-lamp body, 3-lampshade, 4-color temperature driver board, 41-color temperature chip, 42-safety circuit, 43-rectifier circuit, 44-filter circuit, 45-driver Control circuit, 451-IC controller, 452-IC starting circuit, 453-switch detection circuit, 454-current limiting circuit, 455-overvoltage protection circuit, 46-output circuit, 5-light board, 51-light-emitting module, 511 -The first LED lamp, 512-the second LED lamp, 6-screw, 7-heat conduction aluminum plate, 8-counter, 9-logic controller.

Detailed ways

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

As shown in Fig. 1, a kind of color temperature LED lamp of the present invention comprises lamp base 1, lamp body 2, lampshade 3, color temperature driving board 4 and lamp board 5, and one end of lamp body 2 is connected with lamp base 1, The other end of lamp body 2 is covered by lampshade 3 .

A light emitting module 51 is installed on the lamp board 5, and the light emitting module 51 includes at least two LED lamp beads.

The color temperature driving board 4 is provided with a color temperature chip 41 for controlling the power supply on and off of the light emitting module 51 .

The color temperature driving board 4 is arranged in the lamp body 2, the input end of the color temperature driving board 4 is electrically connected to the lamp head 1 through the lamp body 2, and the output end of the color temperature driving board 4 is electrically connected to the lamp board 5 , the lamp board 5 is arranged in the lamp body 2 and directly above the color temperature driving board 4 .

In the present invention, the color temperature driving board 4 and the lamp board 5 are both arranged in the lamp body 2 to form an integrated LED lamp, and the input end of the color temperature driving board 4 passes through the lamp body 2 and is electrically connected to the lamp holder 1 , the output end of the color temperature driving board 4 is electrically connected to the lamp board 5, and the color temperature chip 41 on the color temperature driving board 4 controls the power supply on and off of the light emitting module 51 to realize the LED on the light emitting module 51. The color temperature conversion of the lamp; the invention has the advantages of compact overall, small overall volume, relatively low cost and convenient operation.

The color temperature chip 41 is provided with a safety circuit 42 connected in sequence for cutting off the power supply when a fault occurs, a rectification circuit 43 for rectifying the alternating current into a direct current, a filter circuit 44 for filtering out ripples output by the rectification circuit 43, The drive control unit 45 for controlling the power supply logic on and off of the light emitting module 51 and the output circuit 46 for executing the control command of the drive control unit 45; the rectification circuit 43 rectifies the input alternating current into direct current, and passes it into the filter circuit 44 Inside, the filter circuit 44 filters the ripple in it to ensure its stable waveform, and controls the on-off of each LED lamp in the light-emitting module 51 through the drive control unit 45, and the output circuit 46 receives the control command from the drive control unit 45 , through the on-off of each switch, make each LED lamp perform logical on-off, and then achieve the color temperature conversion of each LED lamp;

The present invention provides an embodiment of the drive control unit 45, the drive control unit 45 includes an IC controller 451, an IC start-up circuit 452 for supplying power to the IC controller 451, and a switch detection circuit 452 for providing a detection signal to the IC controller 451. Circuit 453, a current limiting circuit 454 for limiting the maximum output current and an overvoltage protection circuit 455 for limiting the maximum output voltage; the IC start-up circuit 452 supplies power to the IC controller 451 to make it run normally, and the switch detection circuit 453 provides The IC controller 451 provides detection signals to switch and detect the input DC current and voltage, the current limiting circuit 454 limits the maximum output current of the IC controller 451, and the overvoltage protection circuit 455 limits the maximum output voltage of the IC controller 451 to protect overcurrent and overvoltage .

As shown in FIG. 2 , the present invention provides an implementation manner of IC start-up circuits 452 and 453. IC start-up circuit 452 includes a resistor R1 and a capacitor C2 connected in series. connected to the VCC terminal of the controller; the switch detection circuit 453 includes a diode D1 and a resistor R2 connected in series, one end of the resistor R2 is connected to the diode D1, and the other end of the resistor R2 is connected to the SW terminal of the IC controller.

The present invention provides an implementation manner of the current limiting circuit 454 and the overvoltage protection circuit 455,

The current limiting circuit 454 includes a resistor R3 connected to the CS terminal of the IC controller; the overvoltage protection circuit 455 includes a resistor R4 connected to the ROVP terminal of the IC controller.

The present invention provides an embodiment of a safety circuit 42, a rectification circuit 43 and a filter circuit 44. The safety circuit 42 includes a fuse F1. If the following circuit breaks down, the fuse F1 is blown to cut off the power supply to protect the entire circuit; the rectification circuit 43 includes a fuse F1. The rectifier bridge composed of four diodes converts the input AC power into DC power; the filter circuit 44 includes a filter capacitor C1 to filter the voltage of the input DC power.

The present invention provides an implementation of the output circuit 46. The output circuit 46 includes a controlled switch Q1, a controlled switch Q2 and a controlled switch Q3. The controlled switch Q1 is connected to the OUTA terminal of the IC controller, and the controlled switch Q2 is connected to the IC controller. The OUTB terminal of the controller is connected, and the controlled switch Q3 is connected to the OUTC terminal of the IC controller; the control command of the IC controller is accepted through the controlled switch Q1, the controlled switch Q2 and the controlled switch Q3 to perform logic on-off; further, the output The circuit 46 also includes an inductor L1 and a passive switch D2; as shown in Figure 2, the light-emitting module 51 includes a first LED lamp 511 and a second LED lamp 512; one end of the inductor L1 is connected to one end of the controlled switch Q2, the controlled switch One end of Q3 is connected, the other end of inductor L1 is respectively connected to one end of controlled switch Q1 and passive switch D2, and the other end of passive switch D2 is respectively connected to one end of the first LED light, one end of the second LED light, and the IC controller. The GDN end is connected, the other end of the controlled switch Q2 is connected with the other end of the first LED light, the other end of the controlled switch Q3 is connected with the other end of the second LED light; the controlled switch Q1, the controlled switch Q2 and the controlled The switch Q3 accepts the control command of the IC controller to perform logical on-off, thereby controlling the on-off of the first LED lamp 511 and the second LED lamp 512, realizing the conversion of the first LED lamp 511 and the second LED lamp 512, and achieving the conversion of color temperature .

As shown in Figure 1, in order to better dissipate heat in the present invention, the lamp board 5 is connected with the heat conduction aluminum plate 7 through the screw 6, the heat conduction aluminum plate 7 is close to the color temperature driving board 4, and the heat conduction aluminum plate 7 conducts the heat on the lamp board 5 To the lamp body 2, and also conduct the heat on the color temperature driving board 4 to the lamp body 2, the lamp body 2 is provided with a radiator, which is convenient to dissipate the heat, so that the lamp body 2 is not easy to overheat.

Further, the lamp board 5 is smeared with heat conduction paste, which is convenient for conducting the heat on the lamp board 5 to dissipate heat.

LED1 is a warm white light bead, and LED2 is a cool white light bead.

The present invention provides an embodiment, as shown in Figure 2, Figure 3, Figure 4, Figure 5 and Figure 6,

ACL and ACN input mains, ACL input is connected with fuse F1, rectifier bridge BR1 is respectively connected with CAN input, fuse F1 and filter capacitor C1; one end of resistor R1 is connected with rectifier bridge BR1, resistor R1 The other end of the capacitor C2 and the other end of the capacitor C2 are connected to the VCC end of the IC controller, the other end of the capacitor C2 is connected to the rectifier bridge BR1, the SW end of the IC controller is connected to one end of the resistor R2, and the other end of the resistor R2 is connected to the diode D1 One end of the diode D1 is connected to the rectifier bridge BR1; the CS end of the IC controller is connected to one end of the resistor R3, and the other end of the resistor R3 is connected to the rectifier bridge BR1; the ROUP end of the IC controller is connected to one end of the resistor R4 The other end of the resistor R4 is connected to the rectifier bridge BR1, the OUTA end of the IC controller is connected to one end of the controlled switch Q1, and the other end of the controlled switch Q1 is respectively connected to one end of the inductor L1 and one end of the diode D2, and the diode D2 The other end of the inductor L1 is connected to the GND end of the IC controller, the other end of the inductor L1 is respectively connected to one end of the controlled switch Q2 and one end of the controlled switch Q3, and the other end of the controlled switch Q2 is connected to the OUTA end of the IC controller. The third end of the controlled switch Q2 is connected to one end of the first LED lamp (LED1), the other end of LED1 is connected to the GND end of the IC controller, and the other end of the controlled switch Q3 is connected to the OUTC end of the IC controller. The third terminal of the control switch Q3 is connected to one terminal of the second LED lamp (LED2), and the other terminal of LED2 is connected to the GND terminal of the IC controller.

The two input terminals of ACL and ACN are the mains input part, and their function is to provide energy for the whole circuit;

The fuse F1 forms the insurance circuit 42, and its function is to cut off the power supply in time when the following circuit breaks down; the rectifier bridge BR1 forms the rectifying circuit 43, and its function is to provide direct current for the following circuit; the filter capacitor C1 is the filter circuit 44, and its function It is to filter out the ripple output by the rectifier part; IC1 is an IC controller, and its function is to realize logic control; resistor R1 and capacitor C2 form an IC start-up circuit, and its function is to provide energy for the power supply pin VCC of the IC controller; diode D1 , Capacitor R2 forms a switch detection circuit, and its function is to provide signals for the detection pin SW of the IC controller; resistor R3 forms a current limiting circuit, and its role is to limit the maximum output current of the circuit; resistor R4 forms an overvoltage protection circuit, its role is Limit the maximum voltage output by the circuit; the function of the controlled switches Q1, Q2 and Q3 is to realize the logic control of the IC controller; the inductor L1 is an energy storage inductor, and its function is to realize the logic control of the IC controller; the diode D2 is a passive The function of the switch is to realize the logic control of the IC controller; LED1 and LED2 are LED module groups to form a light emitting module 51, and their function is to be the light output part.

Principle of circuit flow in this embodiment:

A. When the mains is input, the high voltage direct current HV is provided to the following circuit through the fuse F1, the rectifier bridge BR1, and the filter circuit C1;

B. The HV terminal charges the capacitor C2 through the resistor R1. When the charging voltage rises to the starting voltage of the VCC of the IC controller IC1, the IC controller IC1 initializes and starts to work; when the mains switch is disconnected, the capacitor C2 becomes the IC controller. The VCC of IC1 provides short-term energy to keep IC controller IC1 working, and the length of time IC controller IC1 keeps working is determined by the capacity of capacitor C2;

C. The HV terminal provides switching signals for the SW pin of the IC controller IC1 through the diode D1 and the resistor R2. The IC controller IC1 is equipped with a counter 8 and a logic controller 9. At this time, the initial state of the counter 8 is recorded as mode1 (as shown in Figure 4 shown); when the mains switch is turned off in a short time and then turned on again, the state of the counter 8 of the IC controller IC1 is recorded as mode2 (as shown in Figure 5); when the mains switch is turned off again in a short time and then When it is turned on, the state of the counter 8 of the IC controller IC1 is recorded as mode3 (as shown in Figure 6). When the mains switch is turned off and turned on, the counter state of IC controller IC1 is mode1, mode2, mode3, and the cycle continues;

D. The logic controller 9 controls the switching timing of the controlled switches Q1, Q2, and Q3 respectively through the OUTA pin, the OUTB pin, and the OUTC pin according to the difference in the output state of the counter 8;

1) As shown in Figure 4, when the state of the counter is mode1, a cycle is as follows: the controlled switch Q1 and the controlled switch Q2 are turned on at the same time, the controlled switch Q3 is turned off, and the current flows to the controlled switch Q1 and the inductor L1 , the controlled switch Q2, LED1, GND of the IC controller, LED1 light up and the energy storage inductor L1 is charged; then the controlled switch Q1 is cut off, the energy storage inductor L1 releases energy, and the current flows to the inductor L1, the controlled switch Q2, LED1, diode D2, and LED1 light up and emit light; when the operating frequency is greater than a certain value, it shows that LED1 is always on;

2) As shown in Figure 5, when the state of the counter 8 is mode2, a cycle is as follows: the controlled switch Q1 and the controlled switch Q3 are turned on at the same time, the controlled switch Q2 is turned off, and the current flow direction is the controlled switch Q1, the inductor L1, the controlled switch Q3, LED2, the GND of the IC controller, LED2 light up and the energy storage inductor L1 is charged; then the controlled switch Q1 is turned off, the energy storage inductor L1 releases energy, and the current flows to the inductor L1 and the controlled switch Q3 , LED2, diode D2, and LED2 light up and emit light; when the operating frequency is greater than a certain value, it shows that LED2 is always on;

3) As shown in Figure 6, when the state of the counter 8 is mode3, a cycle is as follows: the controlled switch Q1 and the controlled switch Q2 are turned on at the same time, the controlled switch Q3 is turned off, and the current flow direction is the controlled switch Q1, the inductor L1, controlled switch Q2, LED1, GND of the IC controller, LED1 light up and the energy storage inductor L1 is charged; then the controlled switch Q1 and the controlled switch Q2 are cut off, the controlled switch Q3 is turned on, and the energy storage inductor L1 is released Energy and current flow to the inductor L1, the controlled switch Q3, LED2, diode D2, and LED2 to light up; when the operating frequency is greater than a certain value, it shows that LED1 and LED2 are always on and the light is mixed successfully;

E. When the external mains switch is turned off and on, assuming that LED1 is a warm white light bead and LED2 is a cool white light bead, the light color projected by the bulb is warm white-cool white-daylight color, three-color cycle.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (10)

1. a kind of LED light of color-temperature regulating, including lamp cap, lamp body and lampshade, one end of the lamp body is connect with the lamp cap, described The other end of lamp body is covered by the lampshade, which is characterized in that is further included color-temperature regulating driving plate and lamp plate, is installed on the lamp plate There is illuminating module, the illuminating module includes at least two LED lamp beads；It is provided in the color-temperature regulating driving plate for controlling State the color-temperature regulating chip of the power supply on-off of illuminating module；The color-temperature regulating driving plate is arranged in the lamp body, the color-temperature regulating The input terminal of driving plate passes through the lamp body and the lamp cap is electrically connected, the output end and the lamp of the color-temperature regulating driving plate Plate is electrically connected, and the surface in the lamp body and being in the color-temperature regulating driving plate is arranged in the lamp plate.

2. a kind of LED light of color-temperature regulating according to claim 1, which is characterized in that be provided in the color-temperature regulating chip It is sequentially connected to be used for when the insurance circuit cut off the power that breaks down, for the rectified current by AC rectification at direct current Road, the filter circuit for filtering out the ripple that the rectification circuit exports are patrolled for control the power supply of the illuminating module Collect the drive control unit of on-off and the output circuit of the control command for executing the drive control unit.

3. a kind of LED light of color-temperature regulating according to claim 2, which is characterized in that the drive control unit includes IC Controller, the IC start-up circuit for powering to the IC controller detect opening for signal for providing to the IC controller Close detection circuit, the current-limiting circuit for limiting maximum output current and the electricity of the overvoltage protection for limiting maximum output voltage Road.

4. a kind of LED light of color-temperature regulating according to claim 3, which is characterized in that the IC start-up circuit includes series connection Resistance R1 and capacitor C2, tie point that one end of the resistance R1 is connected with one end of capacitor C2 and the IC controller The connection of the end VCC；The switch detection circuit includes concatenated diode D1 and resistance R2, one end of the resistance R2 and described two Pole pipe D1 connection, the other end of the resistance R2 are connect with the end SW of the IC controller.

5. a kind of LED light of color-temperature regulating according to claim 4, which is characterized in that the current-limiting circuit include with it is described The resistance R3 of the end the CS connection of IC controller；The overvoltage crowbar includes the electricity connecting with the end ROVP of the IC controller Hinder R4.

6. a kind of LED light of color-temperature regulating according to claim 2 or 5, which is characterized in that the insurance circuit includes insurance Silk F1；The rectification circuit includes the rectifier bridge being made of four diodes；The filter circuit includes filter capacitor C1.

7. a kind of LED light of color-temperature regulating according to claim 6, which is characterized in that the output circuit includes controlled opens It closes Q1, controlled switch Q2 and controlled switch Q3, controlled switch Q1 to connect with the end OUTA of IC controller, controlled switch Q2 and IC are controlled The end OUTB of device processed connects, and controlled switch Q3 is connect with the end OUTC of IC controller.

8. a kind of LED light of color-temperature regulating according to claim 7, which is characterized in that the output circuit further includes inductance L1 and passive switch D2；The illuminating module includes the first LED light and the second LED light；It is opened respectively with controlled one end of inductance L1 Close one end connection of one end of Q2, controlled switch Q3, the other end of inductance L1 respectively with controlled switch Q1, passive switch D2 one End connection, the other end of passive switch D2 respectively with one end of the first LED light, one end of the second LED light, IC controller GDN End connection, the other end of controlled switch Q2 are connect with the other end of the first LED light, the other end of controlled switch Q3 and the 2nd LED The other end of lamp connects.

9. a kind of LED light of color-temperature regulating according to claim 1 or 8, which is characterized in that the lamp plate passes through screw and leads Hot aluminium sheet connection, the aluminum heat conducting plate are close to the color-temperature regulating driving plate.

10. a kind of LED light of color-temperature regulating according to claim 9, which is characterized in that be coated on the lamp plate thermally conductive Cream.