CN102711313A - Color light-emitting diode (LED) lamp - Google Patents

Abstract

The LED colored lamp of the present invention is composed of an MCU (1), an LED lamp controller (2), an LED lamp (3) and an LED lamp driving circuit (4). The LED light controller (2) sends a control signal to the MCU (1), and the MCU (1) controls the LED light driving circuit (4) to drive the LED light (3) to complete different lightings according to the control signal of the LED light controller (2). model. The LED color lamp of the present invention. It can be used in home lighting and other places. The utility model has the characteristics of simple structure, scientific convenience.

Description

A kind of LED lantern

technical field

The patent of the present invention relates to an LED colored light based on three primary colors, especially an LED colored light that can be dimmed and toned according to the needs of the scene.

Background technique

With the rapid development of the economy, people's requirements for the improvement of living standards are getting higher and higher. In daily life, people's requirements for lighting are also getting higher and higher. Lighting is not simply used for lighting. People often need higher requirements, especially higher requirements for light in different environments. In view of this, it is necessary to design a LED lantern based on three primary colors that can meet people's light requirements in different scenes and environments.

Contents of the invention

The purpose of this invention patent is to provide a special structure and control scheme for future LED lanterns to meet people's needs for light in different scenes and environments. To achieve the control purpose of changing the light according to the scene and environment. Mainly used in home lighting environment and other places.

The patent of the present invention solves its technical problems through the following technical solutions:

LED colored lights are composed of MCU, LED light controller, LED lights, and LED light driving circuit. The MCU is a mega16 single-chip microcomputer. It is a tricolor LED. The LED lamp driving circuit is a three-primary-color LED driving controller composed of PT4115.

The advantages and beneficial effects of the patent of the present invention are:

Traditional LED lights have certain limitations. There is only one fixed light, and the light cannot be changed according to different scenes, which cannot meet people's needs for lighting.

The LED lantern of the present invention is composed of LEDs of three primary colors, and can be adjusted for lighting, and can be adjusted arbitrarily in different scenes and environments, so as to meet people's needs for light in different scenes and environments. beg. It is highly scientific and is the trend of development.

The LED colorful light not only meets people's needs for lights of different colors, but also can adjust light according to needs, which is scientific and reasonable.

Description of drawings

Figure 1 The overall flow chart of the LED lantern

Figure 2 This LED lantern MCU circuit diagram

Figure 3 The circuit diagram of the LED lantern controller

Figure 4 LED lantern drive circuit diagram

in:

1: MCU 2: LED light controller

3: LED light 4: LED light driving circuit

Detailed ways

The following patents of the present invention are described in further detail through specific examples. The following patents of inventions are only descriptive, not limiting, and cannot limit the scope of protection of the patents of the present invention.

As shown in Figure 1, the novel LED color lamp of the present invention is made of MCU (1), LED lamp controller (2), LED lamp (3), LED lamp drive circuit (4).

The LED light controller (2) sends a control signal to the MCU (1), and the MCU (1) controls the LED light driving circuit (4) to drive the LED light (3) to complete different lightings according to the control signal of the LED light controller (2). model.

As shown in Fig. 2, the MCU (1) is composed of mega16, which completes the control signal collection and processing of the control circuit, and can complete lighting modes in various environments through preset lighting scenes. Choose from different colors and brightness.

As shown in Fig. 3, the LED lamp controller (2) is a control circuit composed of keys. As shown in Figure 4, the LED lamp driving circuit (4) is mainly composed of PT4115, which mainly completes the driving of three primary color LEDs. PT4115 is a step-down constant current source IC with continuous inductor current conduction mode, which can The DC voltage is directly converted into a stable constant current output. The chip is suitable for the driving circuit of the green lighting LED lamp, and has the advantage that the application circuit is very simple.

PT4115 adopts frequency jitter (Frequency Jitter) technology, which can effectively reduce EMI. Frequency jitter technology is a new method to solve EMI problems by dispersing harmonic interference energy. Frequency jitter technology means that the operating frequency of the switching power supply is not fixed, but periodically changes from narrowband to broadband to reduce EMI and reduce electromagnetic interference. When the frequency jitter technology is not used, each harmonic is narrow and discrete, the amplitude is at a higher harmonic frequency, and the EMI is concentrated at the peak. When the frequency jitter technology is used, the harmonic amplitude is reduced and becomes smooth, and the high-order harmonic is close to a continuous response, and the effect of suppressing EMI is very significant. The dimming function of the DIM pin adopts the dimming method from high to low, which is safe and reliable. Both PWM and analog voltage can control dimming. DIM has a 1MΩ pull-up resistor (Rup) connected to the internal 5V power supply. Since some lamps need to implement over-temperature protection, a thermistor, NTC or temperature diode can be added to the DIM end. The voltage at the DIM terminal is determined by the voltage division of Rup and NTC. Using the principle of analog dimming and the negative feedback of temperature on the PN junction current to realize dynamic temperature control, it can realize dynamic over-temperature protection of LED lamps.

The analysis results of the above-mentioned combination of components show that due to the special design of this structure, users can set passwords according to their needs, which is highly scientific. This design ensures the safety and stability of the present invention, and is a lamp with good application prospect and popularization.

Claims (2)

1. LED color lamp, by MCU (1), LED lamp controller (2), LED lamp (3), LED lamp drive circuit (4) constitutes.

2. LED color lamp according to claim 1 is characterized in that, described LED lamp can be controlled ignition mode as required arbitrarily, can control the color and the brightness of lamp.

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