LED lamp display driving method and circuit applying same

Abstract

The invention particularly relates to an LED lamp display driving method and a circuit applying the method, the circuit comprises a control chip U1 and a three-color lamp, three pins are led out from the three-color lamp, the three pins comprise 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 connected to the control chip U1 respectively, and the control chip U1 is connected with the control chip U1 through the first pin L1, the second pin L2 and the third pin L3. 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 method and the circuit applying the method, three pins are led out through the three-color lamp, the three pins are respectively connected to the control chip U1, the three pins are only needed to be installed on a control panel, and the three-color lamp is connected with the control chip U1 through the three pins. And the control chip U1 implements three-color conversion, so that the display effect can be achieved under the conditions of cost requirement and limited space.

Description

Technical Field

[0001] The present invention specifically relates to an LED lamp display driving method and a circuit applying the method. Background Art

[0002] With the continuous progress and innovation of science and technology, the technology in a specific field has been widely studied and applied. For example: the application number of the public patent document CN202323210437.1, the name 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 on the substrate, one end of the four pins extends into the colloid, the four pins are fitted and welded with the top surface, side surface and bottom surface of the substrate, the four corners of the substrate are provided with arc grooves, and the four pins are provided with concave arc-shaped pads, and the pads are fitted with the arc grooves. However, the four pins of a side-mounted LED three-color lamp are respectively installed on two board wirings, which can realize different control functions. There are still many shortcomings in this side-mounted LED three-color lamp: the three-color lamp requires four pins, and the cost increases when the two boards are separated. These problems limit the development of this field and the expansion of the scope of application. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide an LED lamp display driving method and a circuit using the method, which can achieve display effects under cost requirements and limited space.

[0004] An LED lamp display driving method according to the present invention includes a control chip U1 and a three-color lamp, the three-color lamp leads to 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 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 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, and the operation method steps are as follows.

[0005] Step 1: When the first light emitting diode LED1 of the three-color lamp is required to light up red, 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.

[0006] Step 2: When the second light emitting diode LED2 of the three-color lamp is required to light up blue, 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 through.

[0007] Step 3: When the third light emitting diode LED3 of the three-color lamp is required to light up 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.

[0008] Specifically, the control chip U1 inputs operation instructions through a switch group.

[0009] The present invention also provides an LED lamp display driving circuit using the LED lamp display driving method described in any of the above schemes, a control chip U1 and a three-color lamp, the three-color lamp leads to three pins, and the three pins are respectively connected to the control chip U1.

[0010] Specifically, pin 3 of the three-color lamp is connected to a sixteenth resistor R16, pin 2 of the three-color lamp is connected to a seventeenth resistor R17, pin 1 of the three-color lamp 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.

[0011] Specifically, the control chip U1 is also 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.

[0012] Specifically, the control chip U1 is also connected to a connector SMG1, and the control chip U1 and the connector SMG1 are connected through a resistor group, and the resistor group includes a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor 11, 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 11, the twelfth resistor R12, the thirteenth resistor R13, the fourteenth resistor R14 and the fifteenth resistor R15 are distributed in parallel.

[0013] The beneficial effects of the present invention are as follows: the method leads out three pins through a three-color lamp, and the three pins are respectively connected to the control chip U1, which only needs to be installed on one control board, and the control chip U1 implements switching of three color conversions, which can meet the display effect under cost requirements and limited space. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments with reference to the following drawings.

[0015] Figure 1 It is a circuit diagram of the control chip U1 of the present invention.

[0016] Figure 2 is a circuit diagram of the switch group of the present invention.

[0017] Figure 3 It is a circuit diagram of a three-color lamp of the present invention.

[0018] Figure 4 is a circuit diagram of a resistor group of the present invention.

[0019] Figure 5 It is a circuit diagram of the connector SMG1 of the present invention. DETAILED DESCRIPTION

[0020] Embodiments of the present invention are described in detail below, examples of which 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0021] Reference below Figures 1 to 5An LED lamp display driving method according to an embodiment of the present invention is described, including a control chip U1 and a three-color lamp, the three-color lamp leads to 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 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 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, and the operation method steps are as follows.

[0022] Step 1: When the first light emitting diode LED1 of the three-color lamp is required to light up red, 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.

[0023] Step 2: When the second light emitting diode LED2 of the three-color lamp is required to light up blue, 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 through.

[0024] Step 3: When the third light emitting diode LED3 of the three-color lamp is required to light up 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.

[0025] The method leads out three pins through a 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 a stop level to the three pins, thereby implementing switching of three color conversions, which can meet the display effect under the condition of cost requirements and limited space.

[0026] Specifically, the control chip U1 inputs operation instructions through the switch group. The switch group inputs operation instructions to the control chip U1.

[0027] The present invention also provides a circuit using the above LED lamp display driving method, a control chip U1 and a three-color lamp, the three-color lamp leads to three pins, and the three pins are respectively connected to the control chip U1.

[0028] Specifically, the 3rd pin of the three-color lamp is connected to the 16th resistor R16, the 2nd pin of the three-color lamp is connected to the 17th resistor R17, the 1st pin of the three-color lamp is connected to the 18th resistor R18, the other end of the 16th resistor R16 is connected to the 17th pin of the control chip U1, the other end of the 17th resistor R17 is connected to the 16th pin of the control chip U1, and the other end of the 18th resistor R18 is connected to the 15th pin of the control chip U1. The 16th resistor R16, the 17th resistor R17 and the 18th resistor R18 are respectively used for voltage limiting.

[0029] 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. Among them, 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 input six switch signals to the control chip U1 respectively. 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 play a role in voltage limiting.

[0030] Specifically, the control chip U1 is further connected to a connector SMG1, and 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 11, 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 11, 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 11, the twelfth resistor R12, the thirteenth resistor R13, the fourteenth resistor R14, and the fifteenth resistor R15 are used for voltage limiting to protect the control chip U1.

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A LED lamp display driving method, characterized in that: It includes a control chip U1 and a three-color lamp. The three-color lamp leads to 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. The operation method steps are as follows: Step 1: When the first light emitting diode LED1 of the three-color lamp is required to light up red, the third pin L3 inputs a high level, the second pin L2 inputs a low level, and the first pin L1 stops the current from passing; Step 2: When the second light emitting diode LED2 of the three-color lamp is required to light up blue, 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 through; Step 3: When the third light emitting diode LED3 of the three-color lamp is required to light up 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.

2. The LED lamp display driving method according to claim 1, characterized in that: The control chip U1 inputs operation instructions through the switch group.

3. A circuit using the LED lamp display driving method as claimed in claim 1 or 2, characterized in that: It includes a control chip U1 and a three-color lamp. The three-color lamp leads to 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.

4. The circuit according to claim 3, 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, 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.

5. The circuit according to claim 3, characterized in that: The control chip U1 is also 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.

6. The circuit according to claim 3, characterized in that: The control chip U1 is also connected to a connector SMG1, and the control chip U1 and the connector SMG1 are connected 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 11, 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 11, 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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