CN210868035U

CN210868035U - LED sound equipment

Info

Publication number: CN210868035U
Application number: CN201921665305.9U
Authority: CN
Inventors: 张超越; 王健; 吕心雨; 杨济畅
Original assignee: Nanjing University of Posts and Telecommunications
Current assignee: Nanjing University of Posts and Telecommunications
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2020-06-26
Anticipated expiration: 2029-10-08

Abstract

The utility model discloses a LED stereo set, including square box, be divided into box and lower box by the baffle in the box, go up and be provided with two polarization beam splitting prisms in the box, polarization beam splitting prism's left and front, right three face center are equipped with LED lamp pearl, and the speaker is installed to the both sides of going up the box, is provided with the circuit board in the lower box, is connected with audio input interface on the circuit board, the interface and the volume adjustment potentiometre charge, the front of lower box seted up with audio input interface, the interface that charges, volume adjustment potentiometre complex through-hole, just audio input interface, the interface that charges, volume adjustment potentiometre follow the through-hole stretches out. The utility model discloses can handle and respond to the sound of different frequencies for different timbres that different musical instruments played show different colours through the LED lamp, and simple structure, appearance are clean and tidy, and the effect is gorgeous, directly is applied to in the household electrical appliances as the product or as a module, all has wide market prospect.

Description

LED sound equipment

Technical Field

The utility model belongs to the technical field of electronic equipment, in particular to LED stereo set.

Background

With the development of science and technology and social economy, the progress of science and technology is affecting social economy and changing the life style of people. The sound equipment is an electronic device for playing sound, and is applied to various aspects in our lives. At present, the stereo set in the market is very big makes things convenient for people's demand, for example can be used for outdoor speech in order to increase the volume, also can be used for enjoying the music at indoor, but traditional stereo set can not reflect the change of different tone qualities, and the function is single, can't satisfy people demand diversified day by day.

Disclosure of Invention

The utility model aims at overcoming the prior art problem, providing a LED stereo set, can handle and make a response to the sound of different frequencies for different timbres that different musical instruments played show up different colours through the LED lamp.

The utility model discloses a solve above-mentioned technical problem and adopt following technical scheme: the utility model provides a LED stereo set, includes square box, divide into box and lower box by the baffle in the box, go up and be provided with two polarization beam splitting prisms in the box, polarization beam splitting prism's left and front, right three face center are equipped with LED lamp pearl, go up the both sides of box and install the speaker, be provided with the circuit board in the box down, be connected with audio input interface, the interface and the volume adjustment potentiometre charge on the circuit board, the front of box down seted up with audio input interface, the interface that charges, volume adjustment potentiometre complex through-hole, just audio input interface, the interface that charges, volume adjustment potentiometre follow the through-hole is stretched out.

As a further technical scheme of the utility model, be equipped with on the circuit board: the audio signal processing circuit is used for acquiring audio signals of left and right sound channels, filtering and amplifying the audio signals and outputting the audio signals to the single chip microcomputer control module; the singlechip control module is used for ADC sampling, outputting the ADC sampling to the audio power amplifying circuit and sending a control signal to control the light control circuit to work; the audio power amplifying circuit controls the loudspeaker to play audio; the light control circuit controls the LED lamp beads to emit light with different colors; and the power supply module supplies power to the whole circuit board.

Furthermore, the audio signal processing circuit is respectively electrically connected with the audio power amplifying circuit and the single-chip microcomputer control module, the single-chip microcomputer control module is respectively electrically connected with the audio power amplifying circuit and the light control circuit, the audio power amplifying circuit is electrically connected with the loudspeaker, and the power supply module is electrically connected with the single-chip microcomputer control module.

Further, the LED lamp beads are respectively a red LED lamp bead, a green LED lamp bead and a blue LED lamp bead.

Furthermore, the audio signal processing circuit is a circuit with a chip LM358 as a core, a pin 2 of an audio connector is connected with a pin 2 of the chip LM358 through a capacitor C1 and a resistor R3 and is connected with a voltage of 5V through a resistor R1, a pin 3 of the chip LM358 is connected with the voltage of 5V through a resistor R2 and is grounded through a resistor R4, a pin 1 of the chip LM358 is connected with an audio right channel output interface and is connected with the pin 2 through a rheostat R5, a pin 4 of the chip LM358 is grounded, a pin 4 of an audio connector is connected with a pin 6 of the chip LM358 through a capacitor C2 and a resistor R6, meanwhile, a pin 4 of the audio connector is connected with the voltage of 5V through a resistor R7, a pin 5 of the chip LM358 is connected with the voltage of 5V through a resistor R8 and is grounded through a resistor R9, a pin 7 of the chip LM358 is connected with the pin 6 through a rheostat R10 and is connected with an audio left channel output, the chip LM358 pin 8 is connected with 5V voltage, and the audio connector pin 5 is grounded.

Further, the single chip microcomputer control module is a circuit with an STM32F103C8T6 single chip microcomputer as a core, an STM32F103C8T6 single chip microcomputer pin 42 and a pin 43 are respectively connected with an audio left channel output interface and an audio right channel output interface, a pin 34, a pin 37 and a pin 38 are respectively connected with a red LED lamp bead, a green LED lamp bead and a blue LED lamp bead, the pin 1 is connected with 5V voltage, and the pin 9 is grounded.

Furthermore, the audio power amplifying circuit is a circuit taking a class-D power amplifier chip PMA8043 as a core, a pin 1 and a pin 3 of the chip PMA8043, a pin 14 and a pin 16 are respectively connected with two speakers, a pin 2, a pin 8, a pin 9, a pin 11 and a pin 15 are all grounded, a pin 6 is connected with 5V voltage, a pin 7 is connected with an audio left channel output interface, and a pin 10 is connected with an audio right channel output interface.

Further, light control circuit, three RGB LED lamp pearl are parallelly connected to respectively with red LED lamp pearl, green LED lamp pearl, blue LED lamp pearl series connection, respectively through resistance R11, resistance R12, resistance R13 connects 3.3V voltage simultaneously.

The utility model adopts the above technical scheme to compare with prior art, have following technological effect: the LED lamp can process and respond to sounds with different frequencies, different timbres played by different musical instruments can show different colors through the LED lamp, the LED lamp is simple in structure, neat in appearance and gorgeous in effect, and the LED lamp can be directly applied to household appliances as a product or as a module and has wide market prospect.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a top view of the present invention.

Fig. 3 is a block diagram of the internal circuit board of the present invention.

Fig. 4 is a circuit diagram of the built-in circuit board of the present invention.

Fig. 5 is a circuit diagram of the internal circuit board of the present invention.

Fig. 6 is a circuit diagram of the built-in circuit board of the present invention.

Fig. 7 is a circuit diagram of the built-in circuit board of the present invention.

The LED lamp comprises a polarization beam splitter prism 1, LED lamp beads 2, a loudspeaker 3, a circuit board 4, an audio signal processing circuit 4-1, an audio power amplifying circuit 4-2, a power module 4-3, a singlechip control module 4-4, a light control circuit 4-5, an audio input interface 5, a charging interface 6, a volume adjusting potentiometer 7, a partition plate 8, an upper box body 9 and a lower box body 10.

Detailed Description

The technical scheme of the utility model is further explained in detail with the attached drawings as follows:

as shown in fig. 1-2, the utility model provides a LED stereo set, including square box, divide into box 9 and lower box 10 by the baffle in the box, be provided with two polarization beam splitter prisms 1 in the last box 9, polarization beam splitter prism 1's left side, preceding, right three face center is equipped with LED lamp pearl 2, speaker 3 is installed to the both sides of going up box 9, be provided with circuit board 4 in the box 10 down, be connected with audio input interface 5 on the circuit board 4, interface 6 and volume adjustment potentiometre 7 charge, lower box 10 openly seted up with audio input interface 5, interface 6 charges, volume adjustment potentiometre 7 complex through-hole, just audio input interface 5, interface 6 charges, volume adjustment potentiometre 7 follow the through-hole stretches out, LED lamp pearl 2 is red LED lamp pearl, green LED lamp pearl, blue LED lamp pearl respectively.

As shown in fig. 3, the circuit board 4 is provided with: the audio signal processing circuit 4-1 is used for collecting audio signals of left and right sound channels, filtering and amplifying the audio signals and outputting the audio signals to the single chip microcomputer control module; the singlechip control module 4-3 is used for ADC sampling, outputting the ADC sampling to the audio power amplifying circuit 4-2 and simultaneously sending a control signal to control the lamp light control circuit 4-5 to work; the audio power amplifying circuit 4-2 controls the loudspeaker 3 to play audio; the light control circuit 4-5 controls the LED lamp beads 2 to emit light with different colors; and the power supply module 4-3 is used for supplying power to the whole circuit board.

The audio signal processing circuit 4-1 is respectively electrically connected with the audio power amplifying circuit 4-2 and the singlechip control module 4-4, the singlechip control module 4-4 is respectively electrically connected with the audio power amplifying circuit 4-2 and the light control circuit 4-5, the audio power amplifying circuit 4-2 is electrically connected with the loudspeaker 3, and the power supply module 4-3 is electrically connected with the singlechip control module 4-4.

As shown in fig. 4-7, the audio signal processing circuit 4-1 of fig. 4 is a circuit with a chip LM358 as a core, an audio connector pin 2 is connected with a pin 2 of the chip LM358 through a capacitor C1 and a resistor R3, and is connected with a voltage of 5V through a resistor R1, a pin 3 of the chip LM358 is connected with a voltage of 5V through a resistor R2, and is grounded through a resistor R4, a pin 1 of the chip LM358 is connected with an audio right channel output interface, and is connected with a pin 2 through a varistor R5, a pin 4 of the chip LM358 is grounded, an audio connector pin 4 is connected with a pin 6 of the chip LM358 through a capacitor C2 and a resistor R6, and an audio connector pin 4 is connected with a voltage of 5V through a resistor R7, a pin 5 of the chip LM358 is connected with a voltage of 5V through a resistor R8, and is grounded through a resistor R9, a pin 7 of the chip LM358 is connected with a pin 6 through a resistor R10, meanwhile, the chip is connected with an audio left channel output interface, a pin 8 of the chip LM358 is connected with 5V voltage, and a pin 5 of the audio connector is grounded.

The single chip microcomputer control module 4-4 of fig. 6 is a circuit using an STM32F103C8T6 single chip microcomputer as a core, a pin 42 and a pin 43 of the STM32F103C8T6 single chip microcomputer are respectively connected with an audio left channel output interface and an audio right channel output interface, a pin 34, a pin 37 and a pin 38 are respectively connected with a red LED lamp bead, a green LED lamp bead and a blue LED lamp bead, a pin 1 is connected with 5V voltage, and a pin 9 is grounded.

The audio power amplifier circuit 4-2 in fig. 5 is a circuit with a class D power amplifier chip PMA8043 as a core, where pin 1 and pin 3, pin 14 and pin 16 of the chip PMA8043 are respectively connected to two speakers, pin 2, pin 8, pin 9, pin 11, and pin 15 are all grounded, pin 6 is connected to 5V voltage, pin 7 is connected to an audio left channel output interface, and pin 10 is connected to an audio right channel output interface.

In the light control circuit 4-5 shown in fig. 7, three RGB LED lamp beads are connected in parallel, and are respectively connected in series with the red LED lamp bead, the green LED lamp bead and the blue LED lamp bead, and are connected to 3.3V voltage through the resistor R11, the resistor R12 and the resistor R13.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration only, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the claims and their equivalents.

Claims

1. The utility model provides a LED stereo set, includes square box, its characterized in that, divide into box and lower box by the baffle in the box, go up and be provided with two polarization beam splitting prisms in the box, polarization beam splitting prism's left and front, right three face center are equipped with LED lamp pearl, the speaker is installed to the both sides of going up the box, be provided with the circuit board down in the box, be connected with audio input interface, the interface and the volume adjustment potentiometre charge on the circuit board, down the box openly seted up with audio input interface, the interface that charges, volume adjustment potentiometre complex through-hole, just audio input interface, the interface that charges, volume adjustment potentiometre follow the through-hole stretches out.

2. The LED sound of claim 1, wherein the circuit board has: the audio signal processing circuit is used for acquiring audio signals of left and right sound channels, filtering and amplifying the audio signals and outputting the audio signals to the single chip microcomputer control module; the singlechip control module is used for ADC sampling, outputting the ADC sampling to the audio power amplifying circuit and sending a control signal to control the light control circuit to work; the audio power amplifying circuit controls the loudspeaker to play audio; the light control circuit controls the LED lamp beads to emit light with different colors; and the power supply module supplies power to the whole circuit board.

3. The LED sound box of claim 2, wherein the audio signal processing circuit is electrically connected to the audio power amplifier circuit and the single-chip microcomputer control module, the single-chip microcomputer control module is electrically connected to the audio power amplifier circuit and the light control circuit, the audio power amplifier circuit is electrically connected to the speaker, and the power supply module is electrically connected to the single-chip microcomputer control module.

4. The LED sound box of claim 1 or 2, wherein the LED lamp beads are red LED lamp beads, green LED lamp beads and blue LED lamp beads respectively.

5. The LED audio system of claim 2, wherein the audio signal processing circuit is a circuit with a chip LM358 as a core, the audio connector pin 2 is connected to the pin 2 of the chip LM358 through a capacitor C1 and a resistor R3, and is connected to a voltage of 5V through a resistor R1, the pin 3 of the chip LM358 is connected to a voltage of 5V through a resistor R2, and is grounded through a resistor R4, the pin 1 of the chip LM358 is connected to the audio right channel output interface, and is connected to the pin 2 through a varistor R5, the pin 4 of the chip LM358 is grounded, the audio connector pin 4 is connected to the pin 6 of the chip LM358 through a capacitor C2 and a resistor R6, and the audio connector pin 4 is connected to a voltage of 5V through a resistor R7, the pin 5 of the chip LM358 is connected to a voltage of 5V through a resistor R8, and is grounded through a resistor R9, the pin 7 of the chip LM358 is connected to a varistor 6 through a resistor R10, meanwhile, the chip is connected with an audio left channel output interface, a pin 8 of the chip LM358 is connected with 5V voltage, and a pin 5 of the audio connector is grounded.

6. The LED sound box of claim 2, wherein the single chip microcomputer control module is a circuit with an STM32F103C8T6 single chip microcomputer as a core, pins 42 and 43 of the STM32F103C8T6 single chip microcomputer are respectively connected with the audio left channel output interface and the audio right channel output interface, pins 34, 37 and 38 are respectively connected with the red LED lamp beads, the green LED lamp beads and the blue LED lamp beads, pin 1 is connected with 5V voltage, and pin 9 is grounded.

7. The LED sound box of claim 2, wherein the audio power amplifying circuit is a circuit with a class D power amplifier chip PMA8043 as a core, the pin 1 and the pin 3 of the chip PMA8043, the pin 14 and the pin 16 are respectively connected with two speakers, the pin 2, the pin 8, the pin 9, the pin 11 and the pin 15 are all grounded, the pin 6 is connected with a voltage of 5V, the pin 7 is connected with an audio left channel output interface, and the pin 10 is connected with an audio right channel output interface.

8. The LED sound box of claim 2, wherein the light control circuit is formed by connecting three RGB LED bulbs in parallel, in series with a red LED bulb, a green LED bulb and a blue LED bulb respectively, and connecting 3.3V voltage to a resistor R11, a resistor R12 and a resistor R13 respectively.