CN210579345U

CN210579345U - Device for changing color temperature of LED and LED lamp

Info

Publication number: CN210579345U
Application number: CN201921369160.8U
Authority: CN
Inventors: 卞爱霞
Original assignee: AEC Lighting Solutions Co Ltd
Current assignee: AEC Lighting Solutions Co Ltd
Priority date: 2019-08-22
Filing date: 2019-08-22
Publication date: 2020-05-19
Anticipated expiration: 2029-08-22

Abstract

The utility model relates to a device for changing LED color temperature and an LED lamp, which is characterized in that the device comprises an LED driver, a switch and an MCU switch control module; one output end of the LED driver is directly grounded, the other output end of the LED driver is respectively connected with the input end of an LED light source, the color temperatures of the two LED light sources are different, the output ends of the two LED light sources are respectively connected with the input end of a switch, one output end of the two switches is respectively connected with the input end of the LED driver, and the other output end of the two switches is respectively grounded through a current sampling resistor; two the switch is still respectively the MCU on-off control module is connected to the electricity, the utility model discloses can the wide application in LED technical field.

Description

Device for changing color temperature of LED and LED lamp

Technical Field

The utility model relates to a change device and LED lamp of LED colour temperature belongs to LED technical field.

Background

An LED (Light Emitting Diode) with adjustable brightness and color temperature has the characteristics of high efficiency, energy saving, long service life, environmental protection and the like, and is popular with users. At present, common dimming and color mixing LED lamps are divided into two structures of COB (Chip On Board) and surface mount LED. For the light and color adjusting COB, at least two LED chip circuits need to be integrated in the light emitting surface to realize the mutual switching between different color temperatures, which may cause the circuit on the surface of the substrate to be complicated and the different circuits to be mutually staggered. In order to avoid the mutual influence between different circuits, one of the circuits needs to skip the staggered circuit, i.e. the "jumper", by means of soldering gold wires or brushing silver paste. However, the jumper wire not only increases the manufacturing cost of the product, but also may cause a dead lamp, thereby reducing the reliability of the product. For the surface-mounted dimming and color-mixing LED, the LED chips with different color temperatures are separately placed, so that the use of jumper wires is avoided. However, the arrangement of LED chips with different color temperatures is rigid, which results in poor light emitting effect and uneven light spots.

Usually, two drivers are needed to drive two paths of LEDs with different color temperatures for changing the color temperature, and the function of changing the color temperature is realized by changing the average current of the two paths of LEDs.

Disclosure of Invention

In view of the above problems, the present invention is to provide a device and a LED lamp for changing the color temperature of LED with low cost and capable of keeping the total power unchanged.

In order to achieve the purpose, the utility model adopts the following technical proposal: a device for changing the color temperature of an LED is characterized by comprising an LED driver, a switch and an MCU switch control module; one output end of the LED driver is directly grounded, the other output end of the LED driver is respectively connected with the input end of an LED light source, the color temperatures of the two LED light sources are different, the output ends of the two LED light sources are respectively connected with the input end of a switch, one output end of the two switches is respectively connected with the input end of the LED driver, and the other output end of the two switches is respectively grounded through a current sampling resistor; and the two switches are respectively and electrically connected with the MCU switch control module.

Preferably, the MCU switch control module adopts a singlechip.

An LED lamp for changing the color temperature of an LED is characterized by comprising a shell, an LED light source, an LED driver, a switch, an MCU switch control module, a control panel and a controller; the LED driver is characterized in that two LED light sources with different color temperatures are arranged in the shell, the input ends of the two LED light sources are respectively and electrically connected with one output end of the LED driver and the input end corresponding to the switch, the other output end of the LED driver is directly grounded, one output end of the two switches is respectively connected with the input end of the LED driver, and the other output end of the two switches is respectively grounded through the current sampling resistor; the two switches are respectively and electrically connected with the MCU switch control module, and the MCU switch control module and the control panel are respectively and electrically connected with the controller.

Preferably, the control panel is provided with a switch button and a dimming button.

Preferably, the control panel is connected with the controller in a wired mode or a wireless mode.

Preferably, the control panel adopts a remote controller or an intelligent device.

Preferably, the MCU switch control module adopts a singlechip.

The utility model discloses owing to take above technical scheme, it has following advantage: the utility model discloses only adopt a LED driver, two LED light source work that have different colour temperatures of LED driver drive to can realize the function of adjustment colour temperature, simultaneously, because total current is unchangeable, the utility model discloses can also keep total power unchangeable, can the wide application in LED technical field.

Drawings

FIG. 1 is a schematic structural diagram of an apparatus for changing the color temperature of an LED according to the present invention;

FIG. 2 is a schematic structural diagram of an LED lamp for changing the color temperature of an LED according to the present invention;

fig. 3 is a schematic structural diagram of an embodiment of the present invention;

fig. 4 is a schematic diagram of the working principle of the embodiment of the present invention.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings. It is to be understood, however, that the drawings are provided for a better understanding of the invention and that they are not to be interpreted as limiting the invention.

As shown in fig. 1, the utility model provides a change device of LED color temperature includes LED driver 1, switch 2 and MCU (Microcontroller Unit) switch control module 3.

One output end of the LED driver 1 is directly grounded, the other output end of the LED driver 1 is respectively connected with the input end of one path of LED light source 5, the color temperatures of the two paths of LED light sources 5 are different, the output ends of the two paths of LED light sources 5 are respectively connected with the input end of one switch 2, one output ends of the two switches 2 are respectively connected with the input end of the LED driver 1, the other output ends of the two switches 2 are respectively grounded through a current sampling resistor 4, the two switches 2 are also respectively and electrically connected with an MCU switch control module 3, the MCU switch control module 3 is used for adopting a time-sharing method, controlling the on duty ratios of the switches 2 and the circuits where the corresponding LED light sources 5 are located by controlling the on or off of the two switches 2 and the on time of the two switches 2, and the LED driver 1 is used for controlling the on duty ratios of the switches 2 and the corresponding LED light sources 5 according to the, corresponding average currents are obtained in the two circuits respectively, and the output of each circuit is controlled to be constant current so as to drive one circuit of the LED light source 5 to work.

In a preferred embodiment, the MCU switch control module 3 may be a single chip microcomputer.

Based on the device of the aforesaid change LED colour temperature, as shown in fig. 2, the utility model also provides a change LED lamp of LED colour temperature, including shell, LED driver 1, switch 2, MCU on-off control module 3, LED light source 5, control panel 6 and controller 7, wherein, LED light source 5 adopts two LED light sources 5 that the colour temperature is different.

Two LED light sources 5 with different color temperatures are arranged in the shell, the input ends of the two LED light sources 5 are respectively and electrically connected with one output end of the LED driver 1 and the input end of the corresponding switch 2, the other output end of the LED driver 1 is directly grounded, one output end of the two switches 2 is respectively connected with the input end of the LED driver 1, and the other output end of the two switches 2 is respectively grounded through the current sampling resistor 4. MCU on-off control module 3 is connected to two switches 2 electricity respectively, MCU on-off control module 3 and control panel 6 electricity connection director 7 respectively, controller 7 is used for the colour temperature according to control panel 6 setting, through opening or closing of two switches 2 of MCU on-off control module 3 control and two switch 2's on-time, and then the duty cycle that switches on of control switch 2 and corresponding LED light source place circuit, LED driver 1 is according to the duty cycle that switches on of circuit, LED light source 5 work of the drive all the way, make the utility model discloses the colour temperature of LED lamp reaches predetermined colour temperature.

In a preferred embodiment, the control panel 6 may be provided with an operating button such as a switch button and a dimming button, the switch button is used to turn on or off the LED lamp, and the dimming button is used to adjust the color temperature of the LED lamp.

In a preferred embodiment, the control panel 6 is connected to the controller in a wired or wireless manner.

In a preferred embodiment, the control panel 6 may be a remote controller or a smart device.

The following describes in detail the usage of the device for changing the color temperature of the LED according to the present invention with specific embodiments:

as shown in fig. 3 and 4, when the switch K1 is turned on, the switch K2 is turned off, and the LED1 starts to emit light; when the switch K2 is turned on, the switch K1 is turned off, and the LED2 starts emitting light. At a certain moment, only one LED1 or LED2 works, the two LEDs work alternately (work alternately hundreds to thousands of times per second) under the control of the MCU switch control module 3, and the time of the alternate work can be changed according to the actual situation, so that the effect of changing the color temperature is achieved.

Based on above-mentioned embodiment change device of LED colour temperature, the utility model discloses a two tunnel LED light sources 5 are warm light LED lamp and cold light LED lamp respectively in the LED lamp of change LED colour temperature, and the colour temperature of LED lamp divides 5 shelves altogether, according to the timesharing method, wherein warm light LED lamp and cold light LED lamp account for respectively than being:

warm light LED lamp: 0. 20%, 40%, 80%, 100%;

cold light LED lamp: 100%, 80%, 40%, 20%, 0.

When the LED lamp of the utility model is turned on, if the color temperature set by the control panel 6 is in the 3 rd gear, the warm LED lamp is 40 percent, the cold LED lamp is 40 percent, at the moment, if the color temperature is increased to the 4 th gear, the warm LED lamp is 80 percent, the cold LED lamp is 20 percent, the color temperature of the LED lamp of the utility model is changed from cold to warm; if reduce colour temperature and keep off to 2 nd, the utility model discloses a colour temperature of LED lamp is by warm cold, wherein, the utility model discloses a colour temperature gear of LED lamp can only adjust 3, 4, 5 or 3, 2, 1 promptly in proper order.

Above-mentioned each embodiment only is used for explaining the utility model discloses, wherein structure, connected mode and the preparation technology etc. of each part all can change to some extent, all are in the utility model discloses equal transform and improvement of going on technical scheme's the basis all should not exclude outside the protection scope of the utility model.

Claims

1. A device for changing the color temperature of an LED is characterized by comprising an LED driver, a switch and an MCU switch control module;

one output end of the LED driver is directly grounded, the other output end of the LED driver is respectively connected with the input end of an LED light source, the color temperatures of the two LED light sources are different, the output ends of the two LED light sources are respectively connected with the input end of a switch, one output end of the two switches is respectively connected with the input end of the LED driver, and the other output end of the two switches is respectively grounded through a current sampling resistor;

and the two switches are also respectively and electrically connected with the MCU switch control module.

2. The device of claim 1, wherein the MCU switch control module is a single chip microcomputer.

3. An LED lamp for changing the color temperature of an LED is characterized by comprising a shell, an LED light source, an LED driver, a switch, an MCU switch control module, a control panel and a controller;

the LED driver is characterized in that two LED light sources with different color temperatures are arranged in the shell, the input ends of the two LED light sources are respectively and electrically connected with one output end of the LED driver and the input end corresponding to the switch, the other output end of the LED driver is directly grounded, one output end of the two switches is respectively connected with the input end of the LED driver, and the other output end of the two switches is respectively grounded through a current sampling resistor;

the two switches are respectively and electrically connected with the MCU switch control module, and the MCU switch control module and the control panel are respectively and electrically connected with the controller.

4. The LED lamp for changing the color temperature of the LED as claimed in claim 3, wherein the control panel is provided with a switch button and a dimming button.

5. The LED lamp for changing the color temperature of the LED according to any one of claims 3 to 4, wherein the control panel is connected to the controller in a wired manner or a wireless manner.

6. The LED lamp for changing the color temperature of the LED according to any one of claims 3 to 4, wherein the control panel adopts a remote controller or an intelligent device.

7. The LED lamp capable of changing the color temperature of the LED according to any one of claims 3 to 4, wherein the MCU switch control module adopts a single chip microcomputer.