CN103458591A - LED lights with adjustable color temperature - Google Patents

Abstract

The invention discloses an LED lamp with adjustable color temperature, which comprises LED chip groups with different color temperatures and a second LED chip group, and comprises a first silicon controlled dimming module, a second silicon controlled dimming module, a main control chip and a main control switch, wherein under the control of the main control switch, the main control chip can control the first LED chip group or the second LED chip group to independently emit light and dim light, or control the first LED chip group and the second LED chip group to emit light and dim light simultaneously. When the first LED chip group emits light independently, warm light is emitted; when the second LED chip group emits light independently, white light is emitted; when the first LED chip group and the second LED chip group emit light simultaneously, warm white light is emitted; the brightness of the first LED chip group and the second LED chip group can be continuously adjusted from 0% to 100% without flicker, and the light emitting states of the first LED chip group and the second LED chip group can be adjusted by a user at will, so that the color temperature and the brightness which are required by the user are matched.

Description

LED lights with adjustable color temperature

technical field

The invention relates to the field of LED lighting, in particular to a remote control LED lamp with adjustable color temperature. the

Background technique

At present, LED light sources are gradually replacing incandescent and fluorescent light sources with the characteristics of long life, no pollution, and high luminous efficiency. Therefore, LED lamps using LEDs as light sources have emerged. Color temperature is used to measure the value of the light color of the light source. The color temperature can be interpreted as: when the color of light emitted by the light source is the same as that radiated by a black body at a certain temperature, the temperature of the black body is called the color temperature of the light source. The color temperature of the light source is different, and the light color is also different. The color temperature below 3300K has a stable atmosphere and a warm feeling; the color temperature of 3000-5000K is the middle color temperature, which has a refreshing feeling; the color temperature above 5000K has a cold feeling. Light sources with different color temperatures can bring different feelings to users, and color temperature preferences are also determined by individuals, and lamps need to have a color temperature adjustment function. Moreover, users are accustomed to using lamps with different brightness at different time periods, so according to different requirements of customers, the lamps need to have a brightness adjustment function.

Therefore, how to combine the color temperature adjustment function and the brightness adjustment function of the lamp is the technical problem to be solved by the present invention.

Contents of the invention

The main purpose of the present invention is to provide an LED lamp with wireless remote control dimming, brightness memory function, and adjustable temperature adjustment. The color temperature and brightness parameters are stored, which is convenient to use when turning on the light next time, and has strong practicability.

The present invention proposes an LED lamp with adjustable color temperature, which includes an AC/DC constant current drive power supply and an LED light source. The LED light source consists of two groups of LED chips with different color temperatures—the first LED chip group and the second LED chip. The LED lamp is equipped with a first thyristor dimming module for stepless dimming of the first LED chipset, and a stepless dimming module for the second LED chipset. The second thyristor dimming module, a main control chip for controlling the first thyristor dimming module and the second thyristor dimming module, and a main control connected to the main control chip switch;

The main control chip includes a segment switch module, a first PWM output module, a second PWM output module and a storage IC, the segment switch module is connected to the first PWM output module and the second PWM output module, The storage IC is respectively connected to the first PWM output module, the second PWM output module, and the segment switch module; the first thyristor dimming module includes a first zero-crossing detection circuit, a first a phase shifting circuit and a first thyristor, the second thyristor dimming module includes a second zero-crossing detection circuit, a second phase shifting circuit and a second thyristor, the first zero-crossing detection circuit and the The second zero-crossing detection circuit is respectively connected to the main control chip, the first PWM output module is connected to the input terminal of the first thyristor, and the second PWM output module is connected to the second controllable silicon The input end of the silicon is connected, the first phase shifting circuit is connected between the first PWM output module and the input end of the first thyristor, and the second phase shifting circuit is connected between the second PWM Between the output module and the input end of the second thyristor, the output end of the first thyristor is connected to the first LED chipset, and the output end of the second thyristor is connected to the first thyristor Two LED chipsets are connected.

Preferably, it also includes a remote controller for sending infrared control signals and an infrared receiving module for receiving infrared control signals, and the infrared receiving module is connected with the main control chip.

Preferably, the first LED chip group is composed of several first LED chips with a color temperature of 3000K, and the second LED chip group is composed of several second LED chips with a color temperature of 6000K.

The LED light source of the LED lamp with adjustable color temperature of the present invention is composed of two groups of LED chip groups with different color temperatures—the first LED chip group and the second LED chip group. When the first LED chip group emits light alone, it emits the first color temperature value When the second LED chip group emits light alone, it emits light with the second color temperature value; when the first LED chip group and the second LED chip group emit light at the same time, the light of the two color temperature values can emit the third color temperature value through color mixing Light.

The LED lamp is equipped with a first thyristor dimming module for stepless dimming of the first LED chipset, a second thyristor dimming module for stepless dimming of the second LED chipset, A main control chip used to control the first thyristor dimming module and the second thyristor dimming module and a main control switch connected to the main control chip; under the control of the main control switch, the main control chip can control The first LED chip group or the second LED chip group emits light and adjusts light independently, or controls the first LED chip group and the second LED chip group to emit light and adjust light simultaneously. When the first LED chip group emits light alone, it emits warm light; when the second LED chip group emits light alone, it emits white light; when the first LED chip group and the second LED chip group emit light at the same time, it emits warm white light; Selective use of light with different color temperatures can create different atmospheres and give people different feelings.

The brightness of the first LED chip group can be adjusted continuously from 0%-100% without flickering, the brightness of the second LED chip group can be adjusted continuously from 0%-100% without flickering, the first LED chip group and the second LED chip The light-emitting state of the group can be adjusted by the user at will, so as to match the color temperature and brightness that the user wants.

Moreover, after the brightness and color temperature of the LED light source are set, the storage IC will store the set color temperature parameters and brightness parameters, so that the LED lamp can keep the last light-emitting state of the lamp when it is turned on next time. It has a memory function and is convenient. user use.

The present invention also has a remote controller for sending infrared control signals and an infrared receiving module for receiving infrared control signals. The infrared receiving module is connected with the main control chip and can be dimmed and controlled by the remote controller, which is very convenient.

Description of drawings

Fig. 1 is the circuit block diagram of the embodiment of the LED lamp of adjustable color temperature of the present invention;

Fig. 2 is a schematic structural diagram of an embodiment of an LED lamp with adjustable color temperature according to the present invention.

The realization of the purpose of the present invention, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. the

Referring to Fig. 1 and Fig. 2, an embodiment of the LED lamp with adjustable color temperature of the present invention is proposed. The LED lamp with adjustable color temperature includes an AC/DC constant current drive power supply and an LED light source. The LED chip group—the first LED chip group 11 and the second LED chip group 12. The first LED chip group 11 is composed of several first LED chip groups 11 with a color temperature of 3000K, and the second LED chip group 12 is composed of several second LED chip groups 12 with a color temperature of 6000K. When the first LED chip group 11 emits light alone, it emits a warm light with a color temperature of 3000K; when the second LED chip group 12 emits light alone, it emits a white light of 6000K; when the first LED chip group 11 and the second LED chip group 12 emit light simultaneously, The light with two color temperature values can emit 4500K warm white light after color mixing.

In the LED lamp, there are first thyristor dimming module 21 for stepless dimming of the first LED chipset 11, and a second thyristor dimming module 21 for stepless dimming of the second LED chipset 12. The dimming module 22 , the main control chip 30 for controlling the first thyristor dimming module 21 and the second thyristor dimming module 22 , and the main control switch 40 connected with the main control chip 30 .

Main control chip 30 comprises subsection switch module 31, the first PWM output module 32, the second PWM output module 33 and storage IC34, and subsection switch module 31 is connected with the first PWM output module 32, the second PWM output module 33, stores The IC34 is respectively connected to the first PWM output module 32, the second PWM output module 33, and the segment switch module 31; the first thyristor dimming module 21 includes a first zero-crossing detection circuit 211, a first phase-shifting circuit 212, and a first phase-shifting circuit 212. A thyristor 213, the second thyristor dimming module 22 includes a second zero-crossing detection circuit 221, a second phase shifting circuit 222 and a second thyristor 223, the first zero-crossing detection circuit 211 and the second zero-crossing detection circuit The detection circuit 221 is respectively connected with the main control chip 30, the first PWM output module 32 is connected with the input end of the first thyristor 213, the second PWM output module 33 is connected with the input end of the second thyristor 223, and the first shifter The phase circuit 212 is connected between the first PWM output module 32 and the input terminal of the first thyristor 213, and the second phase shift circuit 222 is connected between the second PWM output module 33 and the input terminal of the second thyristor 223 , the output end of the first SCR 213 is connected to the first LED chipset 11 , and the output end of the second SCR 223 is connected to the second LED chipset 12 .

Turn on the main control switch 40 to connect to the external AC power supply. The external AC power supply is stepped down, rectified, filtered, and stabilized by the AC/DC constant current drive power supply to output a smooth constant current power supply, which is supplied to the main control chip 30. At this time, the main control The chip 30 enters the initial working state, the subsection switch module 31 is connected to the control loop with the first PWM output module 32, the first LED chipset 11 is lit, and emits warm light. At the same time, the main control chip 30 passes through the first zero-crossing The detection circuit 211 collects the zero-crossing point of the half wave, and at the same time drives the first PWM output module 32 to trigger the first SCR 213 with a synchronous phase-shift pulse, and performs continuous and flicker-free dimming on the first LED chipset 11 to meet customer needs . Then disconnect and open the main control switch 40 quickly, the sub-section switch module 31 can be connected with the control loop of the second PWM output module 33, the second LED chipset 12 is lighted, and emits white light. At the same time, the main control chip 30 passes through The second zero-crossing detection circuit 221 collects the zero-crossing point of the half-wave, and simultaneously drives the second PWM output module 33 to trigger the second thyristor 223 with a synchronous phase-shift pulse, so as to perform continuous and flicker-free dimming on the second LED chipset 12 ,satisfy customer's request. Then disconnect and open the main control switch 40 quickly, the subsection switch module 31 will connect the control loop with the first PWM output module 32, the first PWM output module 32, the first LED chip group 11 and the second LED chip group 12 At the same time, it is lit to emit warm white light. At the same time, through the first PWM output module 32 and the second PWM output module 33, the first LED chipset 11 and the second LED chipset 12 are continuously dimmed without flicker. Users can choose from three lights with different color temperatures and adjust the light to create different atmospheres and give people different feelings.

After the brightness and color temperature of the LED light source are set, the storage IC34 will store the set color temperature parameters and brightness parameters, and call them out for use when the lights are turned on next time, so that the LED lights can keep the last time when the lights are turned on next time. Luminous state, with memory function, convenient for users to use.

The present invention also has a remote controller for sending infrared control signals and an infrared receiving module 50 for receiving infrared control signals. The infrared receiving module 50 is connected to the main control chip 30 and can be dimmed and controlled by the remote controller, which is very convenient.

The LED lamp in this embodiment is an LED bulb lamp, including a radiator 10, a lamp cap and a lampshade, and the LED light source is connected and fixed on the upper surface of the radiator 10, as shown in FIG. 2 .

The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural transformations made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technical fields, are all The same reasoning is included in the patent protection scope of the present invention.

Claims (3)

1. An LED lamp with adjustable color temperature, comprising an AC/DC constant current drive power supply and an LED light source, characterized in that the LED light source consists of two groups of LED chipsets with different color temperatures—the first LED chipset and the second LED chipset. Composed of two LED chipsets, the LED lamp is equipped with a first thyristor dimming module for stepless dimming of the first LED chipset, and a stepless dimming module for the second LED chipset. Dimmable second thyristor dimming module, a main control chip for controlling the first thyristor dimming module and the second thyristor dimming module, and connected to the main control chip the main control switch; The main control chip includes a segment switch module, a first PWM output module, a second PWM output module and a storage IC, the segment switch module is connected to the first PWM output module and the second PWM output module, The storage IC is respectively connected to the first PWM output module, the second PWM output module, and the segment switch module; the first thyristor dimming module includes a first zero-crossing detection circuit, a first a phase shifting circuit and a first thyristor, the second thyristor dimming module includes a second zero-crossing detection circuit, a second phase shifting circuit and a second thyristor, the first zero-crossing detection circuit and the The second zero-crossing detection circuit is respectively connected to the main control chip, the first PWM output module is connected to the input terminal of the first thyristor, and the second PWM output module is connected to the second controllable silicon The input end of the silicon is connected, the first phase shifting circuit is connected between the first PWM output module and the input end of the first thyristor, and the second phase shifting circuit is connected between the second PWM Between the output module and the input end of the second thyristor, the output end of the first thyristor is connected to the first LED chipset, and the output end of the second thyristor is connected to the first thyristor Two LED chipsets are connected. 2. The LED lamp with adjustable color temperature according to claim 1, further comprising a remote controller for sending infrared control signals and an infrared receiving module for receiving infrared control signals, the infrared receiving module is compatible with The main control chip is connected. 3. The LED lamp with adjustable color temperature according to claim 1, characterized in that, the first LED chip group is composed of several first LED chips with a color temperature value of 3000K, and the second LED chip group is composed of It consists of several second LED chips with a color temperature of 6000K.

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