LED lamp display driving circuit

Abstract

The utility model specifically relates to an LED lamp display driving circuit, comprising a control chip U1 and a three-color lamp, three pins are led out from the three-color lamp, the three pins are a first pin L1, a second pin L2 and a third pin L3, the first pin L1, the second pin L2 and the third pin L3 are respectively connected with the control chip U1, and the control chip U1 is connected with the control chip U1. The three-color lamp comprises a first light-emitting diode LED1, a second light-emitting diode LED2 and a third light-emitting diode LED3, according to the LED lamp display driving circuit, three pins are led out through the three-color lamp, the three pins are respectively connected with the control chip U1, only the three pins need to be installed on a control panel, the control chip U1 carries out three-color conversion, and the three-color lamp is connected with the control chip U1. The display effect can be achieved under the conditions that the cost requirement is met and the space is limited.

Description

Technical Field

[0001] The utility model specifically relates to an LED lamp display driving circuit. Background Art

[0002] With the continuous advancement and innovation of science and technology, technologies in specific fields have been widely researched and applied. For example, the patent application number CN202323210437.1 is published, and the title of the patent document is: A side-mounted LED three-color lamp. The structure discloses a substrate, a colloid, and four pins. The colloid is arranged on the top surface of the substrate. Three LED lamp beads are arranged in the colloid. The four pins are welded to the substrate, and one end of each of the four pins extends into the colloid. The four pins are bonded and welded to the top, side, and bottom surfaces of the substrate. The four corners of the substrate are provided with arc grooves, and each of the four pins is provided with a concave arc-shaped pad, which is bonded to the arc grooves. However, the four pins of a side-mounted LED three-color lamp are installed on two board wirings respectively to achieve different control functions. This side-mounted LED three-color lamp still has many shortcomings: the three-color lamp requires four pins, and the cost increases when the four pins are installed separately on two control boards. These problems limit the development and expansion of the scope of application of this field. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems in the prior art. To this end, one purpose of the present invention is to provide an LED light display driving circuit that can achieve a display effect under cost requirements and limited space.

[0004] The utility model describes an LED lamp display driving circuit, including a control chip U1 and a three-color lamp. The three-color lamp leads to three pins, which are divided into a first pin L1, a second pin L2 and a third pin L3. The first pin L1, the second pin L2 and the third pin L3 are respectively connected to the control chip U1. The three-color lamp includes a first light-emitting diode LED1, a second light-emitting diode LED2 and a third light-emitting diode LED3. The second light-emitting diode LED2 and the third light-emitting diode LED3 are connected in parallel. One common end of the second light-emitting diode LED2 and the third light-emitting diode LED3 is connected to one end of the first light-emitting diode LED1, and the other end of the first light-emitting diode LED1 is connected to the first pin L1. One common end of the second light-emitting diode LED2 and the third light-emitting diode LED3 is connected to the second pin L2, and the other common end of the second light-emitting diode LED2 and the third light-emitting diode LED3 is connected to the third pin L3.

[0005] Specifically, pin 3 of the three-color lamp is connected to the sixteenth resistor R16, pin 2 of the three-color lamp is connected to the seventeenth resistor R17, and pin 1 of the three-color lamp is connected to the eighteenth resistor R18. The other end of the sixteenth resistor R16 is connected to pin 17 of the control chip U1, the other end of the seventeenth resistor R17 is connected to pin 16 of the control chip U1, and the other end of the eighteenth resistor R18 is connected to pin 15 of the control chip U1.

[0006] Specifically, the control chip U1 is further connected to a switch group.

[0007] Specifically, the switch group includes a first switch SW1, a second switch SW2, a third switch SW3, a fourth switch SW4, a fifth switch SW5, a sixth switch SW6, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5 and a sixth resistor R6. The first switch SW1 is connected in series with the first resistor R1, the second switch SW2 is connected in series with the second resistor R2, the third switch SW3 is connected in series with the third resistor R3, the fourth switch SW4 is connected in series with the fourth resistor R4, the fifth switch SW5 is connected in series with the fifth resistor R5, and the sixth resistor R6 is connected in series with the sixth resistor R6.

[0008] Specifically, the control chip U1 is further connected to a connector SMG1.

[0009] Specifically, the control chip U1 is connected to the connector SMG1 through a resistor group, which includes a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14 and a fifteenth resistor R15. The seventh resistor R7, the eighth resistor R8, the ninth resistor R9, the tenth resistor R10, the eleventh resistor R11, the twelfth resistor R12, the thirteenth resistor R13, the fourteenth resistor R14 and the fifteenth resistor R15 are distributed in parallel.

[0010] The beneficial effects of the present invention are as follows: the present circuit leads out three pins through the three-color lamp, and the three pins are respectively connected to the control chip U1. It only needs to be installed on one control board, and the control chip U1 implements switching of three colors, which can meet the cost requirements and achieve the display effect under limited space. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings.

[0012] Figure 1 This is a circuit diagram of the control chip U1 of the present utility model.

[0013] Figure 2It is a circuit diagram of the switch group of the present utility model.

[0014] Figure 3 It is a circuit diagram of the three-color lamp of the utility model.

[0015] Figure 4 It is a circuit diagram of the resistor group of the present invention.

[0016] Figure 5 It is a circuit diagram of the connector SMG1 of the present utility model. DETAILED DESCRIPTION

[0017] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0018] Reference below Figures 1 to 5 Description: According to the LED lamp display driving circuit of the present invention, it includes a control chip U1 and a three-color lamp. The three-color lamp leads to three pins, which are divided into a first pin L1, a second pin L2 and a third pin L3. The first pin L1, the second pin L2 and the third pin L3 are respectively connected to the control chip U1. The three-color lamp includes a first light-emitting diode LED1, a second light-emitting diode LED2 and a third light-emitting diode LED3. The second light-emitting diode LED2 and the third light-emitting diode LED3 are connected in parallel. One end of the common end of the second light-emitting diode LED2 and the third light-emitting diode LED3 is connected to one end of the first light-emitting diode LED1, and the other end of the first light-emitting diode LED1 is connected to the first pin L1. One end of the common end of the second light-emitting diode LED2 and the third light-emitting diode LED3 is connected to the second pin L2, and the other end of the common end of the second light-emitting diode LED2 and the third light-emitting diode LED3 is connected to the third pin L3.

[0019] This circuit leads to three pins through the three-color lamp, and the three pins are respectively connected to the control chip U1. The three-color lamp only needs to be installed on one control board, and the control chip U1 inputs high and low levels and stop levels to the three pins, thereby implementing switching between three colors, which can meet the display effect under cost requirements and limited space.

[0020] Specifically, the control chip U1 inputs operation instructions via the switch group. The switch group inputs operation instructions to the control chip U1.

[0021] Specifically, pin 3 of the three-color light is connected to a sixteenth resistor R16, pin 2 of the three-color light is connected to a seventeenth resistor R17, and pin 1 of the three-color light is connected to an eighteenth resistor R18. The other end of the sixteenth resistor R16 is connected to pin 17 of the control chip U1, the other end of the seventeenth resistor R17 is connected to pin 16 of the control chip U1, and the other end of the eighteenth resistor R18 is connected to pin 15 of the control chip U1. The sixteenth resistor R16, the seventeenth resistor R17, and the eighteenth resistor R18 are each used for voltage limiting.

[0022] Specifically, the control chip U1 is further connected to a switch group, which includes a first switch SW1, a second switch SW2, a third switch SW3, a fourth switch SW4, a fifth switch SW5, a sixth switch SW6, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, and a sixth resistor R6. The first switch SW1 is connected in series with the first resistor R1, the second switch SW2 is connected in series with the second resistor R2, the third switch SW3 is connected in series with the third resistor R3, the fourth switch SW4 is connected in series with the fourth resistor R4, the fifth switch SW5 is connected in series with the fifth resistor R5, and the sixth resistor R6 is connected in series with the sixth resistor R6. The first switch SW1, the second switch SW2, the third switch SW3, the fourth switch SW4, the fifth switch SW5, and the sixth switch SW6 respectively input six switching signals to the control chip U1. The first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4, the fifth resistor R5, and the sixth resistor R6 act as voltage limiters.

[0023] Specifically, the control chip U1 is further connected to a connector SMG1. The control chip U1 and the connector SMG1 are connected via a resistor group, which includes a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, and a fifteenth resistor R15. The seventh resistor R7, the eighth resistor R8, the ninth resistor R9, the tenth resistor R10, the eleventh resistor R11, the twelfth resistor R12, the thirteenth resistor R13, the fourteenth resistor R14, and the fifteenth resistor R15 are arranged in parallel. The seventh resistor R7, the eighth resistor R8, the ninth resistor R9, the tenth resistor R10, the eleventh resistor R11, the twelfth resistor R12, the thirteenth resistor R13, the fourteenth resistor R14, and the fifteenth resistor R15 are used to limit voltage and protect the control chip U1.

[0024] The operating method and steps of the above-mentioned LED lamp display driving circuit are as follows.

[0025] Step 1: When the first light emitting diode LED1 of the three-color lamp is required to display red and light up, the third pin L3 is input with a high level, the second pin L2 is input with a low level, and the first pin L1 stops the current from passing through.

[0026] Step 2: When the second light emitting diode LED2 of the three-color lamp is required to display blue and light up, the first pin L1 is input with a high level, the second pin L2 is input with a low level, and the third pin L3 stops the current from passing.

[0027] Step 3: When the third light emitting diode LED3 of the three-color light is green, the second pin L2 is input with a high level, the first pin L1 is input with a low level, and the third pin L3 stops the current from passing through.

[0028] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An LED lamp display drive circuit, characterized in that: It includes a control chip U1 and a three-color lamp. The three-color lamp has three pins. The three pins are divided into a first pin L1, a second pin L2 and a third pin L3. The first pin L1, the second pin L2 and the third pin L3 are respectively connected to the control chip U1. The three-color lamp includes a first light-emitting diode LED1, a second light-emitting diode LED2 and a third light-emitting diode LED3. The second light-emitting diode LED2 and the third light-emitting diode LED3 are connected in parallel. One common end of the second light-emitting diode LED2 and the third light-emitting diode LED3 is connected to one end of the first light-emitting diode LED1. The other end of the first light-emitting diode LED1 is connected to the first pin L1. One common end of the second light-emitting diode LED2 and the third light-emitting diode LED3 is connected to the second pin L2. The other common end of the second light-emitting diode LED2 and the third light-emitting diode LED3 is connected to the third pin L3.

2. The LED lamp display driving circuit according to claim 1, characterized in that: Pin 3 of the three-color lamp is connected to the sixteenth resistor R16, pin 2 of the three-color lamp is connected to the seventeenth resistor R17, and pin 1 of the three-color lamp is connected to the eighteenth resistor R18. The other end of the sixteenth resistor R16 is connected to pin 17 of the control chip U1, the other end of the seventeenth resistor R17 is connected to pin 16 of the control chip U1, and the other end of the eighteenth resistor R18 is connected to pin 15 of the control chip U1.

3. The LED lamp display driving circuit according to claim 1, characterized in that: The control chip U1 is also connected to a switch group.

4. The LED lamp display driving circuit according to claim 3, characterized in that: The switch group includes a first switch SW1, a second switch SW2, a third switch SW3, a fourth switch SW4, a fifth switch SW5, a sixth switch SW6, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5 and a sixth resistor R6. The first switch SW1 is connected in series with the first resistor R1, the second switch SW2 is connected in series with the second resistor R2, the third switch SW3 is connected in series with the third resistor R3, the fourth switch SW4 is connected in series with the fourth resistor R4, the fifth switch SW5 is connected in series with the fifth resistor R5, and the sixth resistor R6 is connected in series with the sixth resistor R6.

5. The LED lamp display driving circuit according to claim 1, characterized in that: The control chip U1 is further connected to a connector SMG1 , and the control chip U1 and the connector SMG1 are connected via a resistor group.

6. The LED lamp display driving circuit according to claim 5, characterized in that: The resistor group includes a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14 and a fifteenth resistor R15, and the seventh resistor R7, the eighth resistor R8, the ninth resistor R9, the tenth resistor R10, the eleventh resistor R11, the twelfth resistor R12, the thirteenth resistor R13, the fourteenth resistor R14 and the fifteenth resistor R15 are distributed in parallel.

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