Lamp bead display control circuit and vehicle

Abstract

The utility model provides a lamp bead display control circuit and a vehicle, and the lamp bead display control circuit comprises a power supply assembly which is coupled with a power supply voltage, converts the amplitude of the power supply voltage, and generates a power supply voltage; the first detection assembly is used for receiving first indication information, converting first indication voltage corresponding to the first indication information and indicating a lamp bead arranged in a first direction to emit light; the second detection assembly is used for receiving second indication information, converting a second indication voltage corresponding to the second indication information and indicating a lamp bead arranged in a second direction to emit light; and the control assembly is respectively coupled with the power supply assembly, the first detection assembly, the second detection assembly and the lamp beads, so that the lamp beads in the first direction or the lamp beads in the second direction emit light. By adopting the technical scheme, the accuracy of lamp bead display can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle products, in particular to a lamp bead display control circuit and a vehicle. Background Art

[0002] With the development of display technology, turn signal lights are widely used in cars. By emitting alternating light and dark flashes when turning, they inform vehicles in front and behind, pedestrians, and traffic police of the car's current direction. Therefore, the correct display of the lamp beads is particularly important for driving safety.

[0003] However, there are still some problems with the existing lamp bead display solutions. Summary of the Invention

[0004] In view of this, the utility model provides a lamp bead display control circuit and a vehicle, which can improve the accuracy of the lamp bead display.

[0005] The utility model provides a lamp bead display control circuit, comprising:

[0006] A power supply component coupled to a power supply voltage, converting the amplitude of the power supply voltage to generate a power supply voltage;

[0007] A first detection component that receives first indication information and converts a first indication voltage corresponding to the first indication information to instruct a lamp bead arranged in a first direction to emit light;

[0008] A second detection component receives second indication information and converts a second indication voltage corresponding to the second indication information to instruct the lamp beads arranged in the second direction to emit light;

[0009] A control component is coupled to the power supply component, the first detection component, the second detection component and the lamp beads respectively, so that the lamp beads in the first direction or the lamp beads in the second direction emit light.

[0010] Optionally, the power supply component includes:

[0011] a switching power supply having an input terminal and an output terminal, wherein the input terminal of the switching power supply inputs the power supply voltage and the output terminal outputs a first voltage;

[0012] They are respectively coupled to the output end of the switching power supply and the control component to provide a charging and discharging branch of the freewheeling path.

[0013] Optionally, the charge and discharge branch includes: a first diode, a first inductor, a first capacitor, and a second capacitor, wherein:

[0014] A first end of the first capacitor is coupled to the output end of the switching power supply, and a second end of the first capacitor is coupled to the first end of the first inductor and the second end of the first diode respectively;

[0015] The second end of the first inductor is coupled to the first end of the control component and the first end of the second capacitor respectively;

[0016] The second end of the second capacitor is coupled to the second end of the first diode and is grounded.

[0017] Optionally, the switching power supply further has a feedback terminal;

[0018] The lamp bead display control circuit also includes:

[0019] A feedback branch is coupled to the feedback terminal of the switching power supply and the charge-discharge branch respectively, and the feedback branch includes a first feedback resistor and a second feedback resistor, wherein: a first end of the first feedback resistor is coupled to the charge-discharge branch, a second end of the first feedback resistor is coupled to the first end of the second feedback resistor and the feedback terminal of the switching power supply respectively, and a second end of the second feedback resistor is coupled to the charge-discharge branch.

[0020] Optionally, the first detection component and the second detection component have the same structure;

[0021] The first detection component and / or the second detection component includes: a first voltage-dividing resistor, a second voltage-dividing resistor, and a first clamping diode, wherein:

[0022] The first end of the first voltage-dividing resistor is suitable for inputting the first indication information or the second indication information, and the second end of the first voltage-dividing resistor is coupled to the first end of the second voltage-dividing resistor and the second end of the first clamping diode respectively; the second end of the second voltage-dividing resistor is coupled to the first end of the first clamping diode and is grounded.

[0023] Optionally, the lamp bead display control circuit further includes:

[0024] A third detection component is coupled to the control component, receives third indication information, and instructs the lamp beads arranged in the third direction to emit light; wherein the third detection component includes a second clamping diode.

[0025] Optionally, the lamp bead display control circuit further includes:

[0026] A filter component is arranged between the power supply component and the control component, wherein the filter component includes: a first filter resistor and a first filter capacitor, wherein the first end of the first filter resistor is coupled to the first end of the first filter capacitor and is located between the power supply component and the control component; the second end of the first filter resistor is coupled to the second end of the first filter capacitor and is grounded.

[0027] Optionally, the structure of the lamp bead includes at least one of the following forms:

[0028] A string of lamp beads consisting of multiple RGB lamp beads, and each RGB lamp bead is cascaded;

[0029] An array of lamp beads is composed of multiple RGB lamp beads, and a column of lamp beads includes multiple cascaded RGB lamp beads, and the lamp beads between adjacent columns are interconnected.

[0030] Optionally, the lamp bead display control circuit further includes:

[0031] Filter capacitors coupled to each lamp bead.

[0032] Accordingly, the present invention further provides a vehicle, comprising: the lamp bead display control circuit described in any of the above examples;

[0033] A lamp bead coupled to the lamp bead display control circuit.

[0034] Compared with the prior art, the technical solution of the embodiment of the utility model has the following advantages:

[0035] By adopting the lamp bead display control circuit provided by the present invention, by adding a first detection component and a second detection component in the control loop, it is possible to respectively receive first indication information indicating that the lamp beads set in the first direction are emitting light, and second indication information indicating that the lamp beads set in the second direction are emitting light, and the first detection component and the second detection component are both coupled to the control component, so that the control component can cooperate with the first detection component and the second detection component, so that the lamp beads in the first direction or the lamp beads in the second direction can emit light, thereby improving the accuracy of the lamp bead display. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1This is a schematic diagram of the structure of a lamp bead display control circuit in the present utility model;

[0038] Figure 2 This is a structural diagram of a lamp bead display control circuit corresponding to the first embodiment of this embodiment;

[0039] Figure 3 This is a schematic structural diagram of a first detection component and / or a second detection component in an embodiment of the present utility model;

[0040] Figure 4 This is a structural diagram of a lamp bead display control circuit in the second embodiment of the present utility model;

[0041] Figure 5 This is a schematic diagram of the structure of a lamp bead in the utility model;

[0042] Figure 6 This is a schematic diagram of the structure of another type of lamp bead in the present utility model;

[0043] Figure 7 This is a structural diagram of a filter circuit in the utility model. DETAILED DESCRIPTION

[0044] As mentioned in the background technology, the existing LED display solution still has some problems, because:

[0045] In the existing lamp bead display solution, when a turn is required, the lamp bead display may go wrong due to human error or other interference factors.

[0046] For example, when you need to turn left, the light beads used to indicate a right turn may light up, thereby misleading other pedestrians or cars.

[0047] In order to solve the above technical problems, the utility model provides a lamp bead display control circuit, including: a power supply component coupled to the power supply voltage, converting the amplitude of the power supply voltage to generate a power supply voltage; a first detection component that receives first indication information and converts a first indication voltage corresponding to the first indication information to instruct the lamp bead set in the first direction to emit light; a second detection component that receives second indication information and converts a second indication voltage corresponding to the second indication information to instruct the lamp bead set in the second direction to emit light; and a control component that is coupled to the power supply component, the first detection component, the second detection component and the lamp bead respectively, so that the lamp bead in the first direction or the lamp bead in the second direction emits light.

[0048] By adopting the lamp bead display control circuit in the above example, by adding a first detection component and a second detection component in the control loop, it is possible to respectively receive first indication information indicating that the lamp beads set in the first direction are emitting light, and second indication information indicating that the lamp beads set in the second direction are emitting light, and the first detection component and the second detection component are both coupled to the control component, so that the control component can cooperate with the first detection component and the second detection component, so that the lamp beads in the first direction or the lamp beads in the second direction can emit light, thereby improving the accuracy of the lamp bead display.

[0049] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are exemplarily described below with reference to the accompanying drawings.

[0050] The utility model provides a lamp bead display control circuit, such as Figure 1 The structure diagram of a lamp bead display control circuit in the utility model shown in the figure may include:

[0051] A power supply component 110 coupled to the power supply voltage U1, converting the amplitude of the power supply voltage U1 to generate a power supply voltage;

[0052] A first detection component 120 that receives first indication information S1 and converts a first indication voltage corresponding to the first indication information S1 to instruct the lamp bead LD1 disposed in the first direction to emit light;

[0053] A second detection component 130 receives the second indication information S2 and converts the second indication voltage corresponding to the second indication information S2 to instruct the lamp bead LD2 arranged in the second direction to emit light;

[0054] A control component 140 is coupled to the power supply component 110 , the first detection component 120 , the second detection component 130 and the lamp beads LD1 and LD2 respectively, so that the lamp bead LD1 in the first direction or the lamp bead LD2 in the second direction emits light.

[0055] Specifically, the first detection component 120 can be coupled to a device (such as a first switch) for indicating that the lamp bead LD1 in the first direction emits light, and the second detection component 130 can be coupled to a device (such as a second switch) for indicating that the lamp bead LD2 in the second direction emits light.

[0056] When one of the first detection component 120 or the second detection component 130 receives the corresponding indication information, it can output a corresponding signal to the control component 140, so that the control component 140 can output a control signal to the corresponding lamp bead.

[0057] For example, when the first detection component 120 receives the first indication information S1, the lamp bead LD1 lights up under the action of the first detection component 120 and the control component 140; and when the second detection component 130 receives the second indication information S2, the lamp bead LD2 lights up under the action of the second detection component 130 and the control component 140.

[0058] In other words, at any moment, only the lamp beads in one direction are emitting light, thereby improving the accuracy of the lamp bead display.

[0059] It should be noted that, first, Figure 1 The connection relationship between the various components shown is only an example, which is used to indicate that the light beads can be illuminated in different directions through the cooperation between the various components; secondly, Figure 1 The specific structure of the lamp beads is not shown.

[0060] In this embodiment, combined with Figure 1 , see Figure 2 The structure diagram of a lamp bead display control circuit corresponding to the first embodiment of this embodiment is shown in FIG. Figure 2 As shown, the power supply component 110 may include:

[0061] a switching power supply 111 having an input terminal IN and an output terminal OUT, wherein the input terminal IN of the switching power supply 111 inputs the power supply voltage U1 and outputs a first voltage through the output terminal OUT;

[0062] The charging and discharging branch 112 is coupled to the output terminal OUT of the switching power supply 111 and the control component 140 respectively, providing a freewheeling path.

[0063] Specifically, when the switching power supply 111 is in the on state, it can be considered that the power supply voltage U1 is directly connected to the charge and discharge branch 112. At this time, the charge and discharge branch 112 is in the charging state, and the switching power supply 111 is providing energy to the lamp beads; when the switching power supply 111 is in the off state, the electric energy in the charge and discharge branch 112 will not drop to zero immediately, and the charge and discharge branch 112 will form a freewheeling path to maintain the voltage at both ends of the lamp beads, so that the lamp beads can emit light stably and continuously.

[0064] In this embodiment, see Figure 2The charge-discharge branch 112 may include: a first diode D1, a first inductor L1, a first capacitor C1, and a second capacitor C2, wherein: a first end of the first capacitor C1 is coupled to the output end OUT of the switching power supply 111, and a second end of the first capacitor C1 is coupled to the first end of the first inductor L1 and the second end of the first diode D1 respectively; a second end of the first inductor L2 is coupled to the control component 140 and the first end of the second capacitor C2; a second end of the second capacitor C2 and a second end of the first diode D1 are grounded.

[0065] Specifically, when the switching power supply 111 is in the on state, since the first diode D1 is in the off state, a power supply path can be formed between the switching power supply 111-first capacitor C1-first inductor L1-control component 140-lamp bead (lamp bead LD1 or LD2), so that the lamp bead can emit light, and a charging loop is formed between the switching power supply 111-first capacitor C1-first inductor L1-second capacitor C2-first diode D1, so that electrical energy can be stored on the first inductor L1.

[0066] When the switching power supply 111 is in the off state, the electric energy on the first inductor L1 is released, thereby forming a freewheeling path between L1 and D1, and the lamp bead can still emit light.

[0067] It should be noted that, first, Figure 2 The structure of the charging and discharging branch 112 is only an example. In actual applications, the functions of the charging and discharging branch 112 can be realized by adding or some other devices. Secondly, the second capacitor C2 can also play a filtering role. Thirdly, the charging and discharging branch 112 can also include a load resistor R3 for representing a load.

[0068] In this embodiment, see Figure 2 The switching power supply 111 further has a feedback terminal FB.

[0069] Correspondingly, the lamp bead display control circuit may further include: a feedback branch 150 coupled to the feedback terminal FB of the switching power supply 111 and the charging and discharging branch 112 respectively.

[0070] By setting the feedback branch 150, the voltage value at the output end of the charge and discharge branch 112 can be detected, so that the switching power supply 111 can adjust its own duty cycle according to the voltage detection value to adjust the voltage value at the output end of the charge and discharge branch 112, so that the lamp bead can operate at the set voltage.

[0071] As a non-limiting example, after the power supply voltage U1 is converted by the power supply component 110 , the generated power supply voltage may be 5V.

[0072] In this embodiment, the feedback branch 150 may include a first feedback resistor R1 and a second feedback resistor R2, wherein: a first end of the first feedback resistor R1 is coupled to the charge-discharge branch 112 (for example, the second end of the first inductor L1), a second end of the first feedback resistor R1 is coupled to the first end of the second feedback resistor R2 and the feedback terminal FB of the switching power supply 111, respectively, and a second end of the second feedback resistor R2 is coupled to the charge-discharge branch 112 (for example, the first end of the first inductor L1).

[0073] In other words, by using the first feedback resistor R1 and the second feedback resistor R2 as the feedback branch 150 , the voltage at the feedback terminal FB output to the switching power supply 111 is the voltage drop across the second feedback resistor R2 .

[0074] In this embodiment, the switching power supply 111 further has a vacant terminal NC (ie, a terminal not connected to any device), a terminal TB, and a ground terminal GND (ie, connected to the ground).

[0075] In this embodiment, the first detection component 120 and the second detection component 130 have the same structure.

[0076] More specifically, combined Figure 1 , see Figure 3 The schematic diagram of the structure of a first detection component and / or a second detection component in an embodiment of the present invention is shown in FIG. Figure 3 As shown, the first detection component 120 and / or the second detection component 130 may include: a first voltage-dividing resistor R4, a second voltage-dividing resistor R5 and a first clamping diode D2, wherein:

[0077] The first end of the first voltage-dividing resistor R4 is suitable for inputting the first indication information S1 (the first indication information S1 is input when the first detection component 120) or the second indication information S2 (the second indication information S2 is input when the second detection component 130), and the second end of the first voltage-dividing resistor R4 is coupled to the first end of the second voltage-dividing resistor R5 and the second end of the first clamping diode D1 respectively; the second end of the second voltage-dividing resistor R5 is coupled to the first end of the first clamping diode D1 and is grounded.

[0078] Specifically, when the first indication information S1 or the second indication information S2 is received, since the first indication information S1 or the second indication information S2 has a corresponding voltage value, the first voltage divider resistor R4 and the second voltage divider resistor R5 can perform a voltage dividing operation, and by setting the first clamping diode D1, the voltage divider resistor output to the control component 140 is a constant value, so that when the control component 140 receives the voltage value, it can output the corresponding control signal to the lamp bead LD1 or the lamp bead LD2.

[0079] In this embodiment, the divided voltage may be a voltage drop across the second voltage-dividing resistor R5 .

[0080] As a non-limiting example, the voltage value corresponding to the first indication information S1 or the second indication information S2 may be 12V, and the divided voltage may be 5V, that is, the voltage dividing ratio formed by the first voltage dividing resistor R4 and the second voltage dividing resistor R5 is 5 / 12.

[0081] In this embodiment, the control component 140 may include a single chip microcomputer.

[0082] In some other embodiments, the control component may be implemented by a processing chip such as a central processing unit (CPU) or a field programmable gate array (FPGA).

[0083] It should be noted that the control component can use a general-purpose computer device to communicate and perform data operations with the first detection component, the second detection component, and even the third detection component. The embodiments of the present invention do not involve improvements to the specific working methods of the computing device. The process of obtaining data and the comparison process of the computing device can be implemented using existing technologies or conventional technical means in the field.

[0084] In order to further improve the stability performance of the lamp bead display control circuit, the structure of the lamp bead display control circuit can be further expanded.

[0085] The lamp bead display control circuit may further include: a filter component arranged between the power supply component and the control component.

[0086] By providing a filter component, the clutter in the power supply voltage output by the power supply component can be filtered out, thereby improving the quality of the power supply voltage.

[0087] In this embodiment, the filtering component can be a first filtering resistor and a first filtering capacitor, wherein the first end of the first filtering resistor is coupled to the first end of the first filtering capacitor and is located between the power supply component (or the first end of the first filtering resistor, the first end of the first filtering capacitor, and the second end of the first inductor are connected) and the control component; the second end of the first filtering resistor is coupled to the second end of the first filtering capacitor and is grounded.

[0088] By adopting a filter circuit composed of resistors and capacitors, noise in the power supply voltage can be filtered out, and resistors and capacitors are commonly used components, which can reduce implementation costs.

[0089] See next Figure 2The lamp bead display control circuit may further include: a third filter capacitor C3 arranged between the power supply voltage U1 and the power supply component 110 to filter out clutter in the power supply voltage U1 and improve the quality of the power supply voltage U1.

[0090] See next Figure 3 The lamp bead display control circuit may further include: a fourth filter capacitor C4 disposed between the first detection component 120 or the second detection component 130 and the control component 140 to filter out noise in the divided voltage and improve the quality of the divided voltage.

[0091] See also Figure 4 The following is a schematic diagram of a lamp bead display control circuit in the second embodiment of the present invention. The similarities between this embodiment and the previous embodiment are not described again. The differences are as follows:

[0092] The lamp bead display control circuit may further include: a third detection component 170 coupled to the control component 140, receiving the third indication information S3, and instructing the lamp beads arranged in the third direction to emit light.

[0093] By providing the third detection component 170 , the third indication information S3 in the third direction can be detected, so that the lamp bead display control circuit can control the light-emitting process of the lamp beads in multiple directions.

[0094] As a non-limiting example, the first direction may be a direction corresponding to a left turn, the second direction may be a direction corresponding to a right turn, and the third direction may be a direction corresponding to braking.

[0095] In this embodiment, the third detection component 170 may include a second clamping diode D3.

[0096] Specifically, when in a normal driving state, the third indication information S3 does not exist, or the voltage value corresponding to the third indication information S3 is 0, so that the second clamping diode D3 is in a cut-off state, and thus cannot output any signal to the control component 140; when the braking process is triggered, the second clamping diode D3 is in a conducting state, and the control component 140 can control the lamp bead indicating the brake to light up, thereby preventing the lamp bead from lighting up due to accidental touch.

[0097] In this embodiment, see Figure 5 A schematic diagram of the structure of a lamp bead is shown in FIG. Figure 5 As shown, the structure of the lamp beads may include: a plurality of RGB lamp beads (eg Figure 5 A string of lamp beads (shown as RGB11 to RGB16), and each RGB lamp bead is cascaded connected (for example, RGB11 to RGB16 are connected in series), thereby achieving multi-functional lighting effects and adjustable light colors.

[0098] See also Figure 6 The structural diagram of another type of lamp bead is shown in FIG. Figure 6 As shown, the structure of the lamp beads may include: an array of lamp beads composed of multiple RGB lamp beads (for example, 6 columns of lamp beads, and each column of lamp beads has 6 RGB lamp beads), and a column of lamp beads includes multiple cascaded RGB lamp beads, and the lamp beads between adjacent columns are connected to each other (for example, the first column of lamp beads are connected to the second column of lamp beads, the second column of lamp beads are connected to the third column of lamp beads,..., the fifth column of lamp beads are connected to the sixth column of lamp beads).

[0099] The connection relationship between each column of lamp beads can be seen in Figure 5 Description.

[0100] use Figure 6 The lamp beads shown can, on the one hand, realize the brake light and position light effects at the same time; on the other hand, the lamp beads can be arranged in a matrix, and due to the characteristics of the RGB lamp beads themselves, they can communicate with the control components in one line, thereby controlling the lighting effect of a single lamp bead to achieve a variety of different display effects.

[0101] In addition, compared with the traditional use of encoders to achieve matrix control, the structure is simpler and can effectively improve production efficiency.

[0102] In this embodiment, see Figure 7 As shown in the structural diagram of a filter circuit, the lamp bead display control circuit may further include: a second filter capacitor C1X coupled to each lamp bead, which can effectively filter out the clutter in the voltage on the corresponding lamp bead.

[0103] It should be pointed out that Figure 7 Only one of the second filter capacitors is shown schematically.

[0104] It should be noted that the above describes multiple embodiment schemes provided by the present invention. The various optional methods introduced in each embodiment scheme can be combined and cross-referenced with each other without conflict, thereby extending a variety of possible embodiment schemes, which can all be considered as the embodiment schemes disclosed by the present invention and the utility model.

[0105] In specific implementations, the above-mentioned lamp bead display control circuit can be applied to various vehicles. An example of its application in a vehicle is given below.

[0106] Specifically, this embodiment further provides a vehicle, which may include the lamp bead display control circuit described in any of the aforementioned embodiments; and lamp beads coupled to the lamp bead display control circuit.

[0107] As a non-limiting example, the vehicle may be a car.

[0108] The car can be a hybrid car, a non-hybrid car, an electric car, a fuel cell car or other types of cars, and can also be an autonomous car, a semi-autonomous car or a non-autonomous car. The car key-based communication device can be integrated into the car.

[0109] In this embodiment, the automobile may include various subsystems, such as an infotainment system, a perception system, a decision-making and control system, a drive system, and a computing platform. The automobile may include more or fewer subsystems, and each subsystem may include multiple components. Furthermore, each subsystem and each component of the automobile may be interconnected via wired or wireless means.

[0110] It should be noted that the “one embodiment” or “embodiment” referred to in the present invention refers to a specific feature, structure or characteristic that may be included in at least one implementation method of the present invention. And in the description of the present invention, the terms “first”, “second” and the like are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined by the terms “first”, “second” and the like may explicitly or implicitly include one or more of the features. Moreover, the terms “first”, “second” and the like are used to distinguish similar objects, and are not necessarily used to describe a specific order or to express importance. It is understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than that illustrated or described.

[0111] Although the embodiments of the present invention are disclosed above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the scope defined by the claims.

Claims

1. A lamp bead display control circuit, characterized in that: include: A power supply component coupled to a power supply voltage, converting the amplitude of the power supply voltage to generate a power supply voltage; A first detection component that receives first indication information and converts a first indication voltage corresponding to the first indication information to instruct a lamp bead arranged in a first direction to emit light; A second detection component receives second indication information and converts a second indication voltage corresponding to the second indication information to instruct the lamp beads arranged in the second direction to emit light; A control component is coupled to the power supply component, the first detection component, the second detection component and the lamp beads respectively, so that the lamp beads in the first direction or the lamp beads in the second direction emit light.

2. The lamp bead display control circuit according to claim 1, characterized in that: The power supply component includes: a switching power supply having an input terminal and an output terminal, wherein the input terminal of the switching power supply inputs the power supply voltage and the output terminal outputs a first voltage; They are respectively coupled to the output end of the switching power supply and the control component to provide a charging and discharging branch of the freewheeling path.

3. The lamp bead display control circuit according to claim 2, characterized in that: The charging and discharging branch includes: a first diode, a first inductor, a first capacitor and a second capacitor, wherein: A first end of the first capacitor is coupled to the output end of the switching power supply, and a second end of the first capacitor is coupled to the first end of the first inductor and the second end of the first diode respectively; The second end of the first inductor is coupled to the first end of the control component and the first end of the second capacitor respectively; The second end of the second capacitor is coupled to the second end of the first diode and is grounded.

4. The lamp bead display control circuit according to claim 2, characterized in that: The switching power supply also has a feedback terminal; The lamp bead display control circuit also includes: A feedback branch is coupled to the feedback terminal of the switching power supply and the charge-discharge branch respectively, and the feedback branch includes a first feedback resistor and a second feedback resistor, wherein: a first end of the first feedback resistor is coupled to the charge-discharge branch, a second end of the first feedback resistor is coupled to the first end of the second feedback resistor and the feedback terminal of the switching power supply respectively, and a second end of the second feedback resistor is coupled to the charge-discharge branch.

5. The lamp bead display control circuit according to claim 1, characterized in that: The first detection component and the second detection component have the same structure; The first detection component and / or the second detection component includes: a first voltage-dividing resistor, a second voltage-dividing resistor, and a first clamping diode, wherein: The first end of the first voltage-dividing resistor is suitable for inputting the first indication information or the second indication information, and the second end of the first voltage-dividing resistor is coupled to the first end of the second voltage-dividing resistor and the second end of the first clamping diode respectively; the second end of the second voltage-dividing resistor is coupled to the first end of the first clamping diode and is grounded.

6. The lamp bead display control circuit according to claim 1, characterized in that: Also includes: A third detection component is coupled to the control component, receives third indication information, and instructs the lamp beads arranged in the third direction to emit light; wherein the third detection component includes a second clamping diode.

7. The lamp bead display control circuit according to claim 1, characterized in that: Also includes: A filter component is arranged between the power supply component and the control component, wherein the filter component includes: a first filter resistor and a first filter capacitor, wherein the first end of the first filter resistor is coupled to the first end of the first filter capacitor and is located between the power supply component and the control component; the second end of the first filter resistor is coupled to the second end of the first filter capacitor and is grounded.

8. The lamp bead display control circuit according to claim 1, characterized in that: The structure of the lamp bead includes at least one of the following forms: A string of lamp beads consisting of multiple RGB lamp beads, and each RGB lamp bead is cascaded; An array of lamp beads is composed of multiple RGB lamp beads, and a column of lamp beads includes multiple cascaded RGB lamp beads, and the lamp beads between adjacent columns are interconnected.

9. The lamp bead display control circuit according to claim 1, characterized in that: Also includes: Filter capacitors coupled to each lamp bead.

10. A means of transport, characterized in that: include: The lamp bead display control circuit according to any one of claims 1 to 9; A lamp bead coupled to the lamp bead display control circuit.

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