LED module and LED circuit

Abstract

The utility model relates to the technical field of illumination, in particular to an LED module and an LED circuit, which comprise a resistor R1, a resistor R2, a resistor R3, a resistor R4, a diode D1, a diode D2, a diode D3, a diode D4 and an LED lamp body. The characteristic of single conduction of a diode is utilized, when an LED module is positively connected to a main line, current passes through a resistor R1 and a resistor R2 in a positive circuit, power output of an LED lamp body is affected by adjusting resistance values of the resistor R1 and the resistor R2, and the purpose of adjusting the power of the positive circuit is achieved; according to the utility model, the current passes through the resistor R3 and the resistor R4 in the reverse circuit, and the resistance values of the resistor R3 and the resistor R4 are adjusted, so that the power output of the LED lamp body is influenced, the purpose of adjusting the power of the reverse circuit is realized, and finally the purpose of realizing two different powers in the same LED module without using point control is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of lighting, in particular to an LED module and an LED circuit. Background Art

[0002] An LED (Light Emitting Diode) module generally serves as an independent working unit and is cascaded together through wires. In fact, LED modules are connected in a parallel circuit, and the supply current extends backward through the main line. Common LED modules include constant-current modules and constant-voltage modules. The constant-current module realizes a stable constant-current output within a certain range by adjusting the resistance value of the resistor, while the constant-voltage module realizes the output of a predetermined power by adjusting the resistance value of the resistor. And after the constant-voltage module is connected to the positive or negative pole of the DC power supply, usually only one designed power can be realized. If the constant-voltage module is to realize two different powers, either produce two different power LED modules or use point control to achieve it. However, both of these solutions have certain drawbacks, specifically including:

[0003] 1. Producing two different power LED modules requires advance planning, estimating the product usage and arranging production, and more manpower arrangement and detection are also needed for later installation, which is time-consuming and laborious;

[0004] 2. Using point-control LED modules has higher requirements for LED lamp beads. Usually, larger-sized LED lamp beads need to be selected. If the size of the PCB (Printed Circuit Board) of the LED module is limited, it may not be able to accommodate larger LED lamp beads. At the same time, because larger LED lamp beads require more space, the lens needs to make more space concessions, thus affecting the matching of the lens;

[0005] 3. Point-control LED modules require a larger-sized PCB and more BOM (Bill of Materials) material costs. Summary of the Utility Model

[0006] In view of this, the utility model provides an LED module and an LED circuit, aiming to solve the problem of how to achieve two powers without using point control in the same constant-voltage module.

[0007] The utility model provides an LED module, including a resistor R1, a resistor R2, a resistor R3, a resistor R4, a diode D1, a diode D2, a diode D3, a diode D4 and an LED lamp body;

[0008] Among them, the negative electrode of the LED lamp body is respectively connected to the positive electrode of the diode D4 and the positive electrode of the diode D2. The negative electrode of the diode D4 and the positive electrode of the diode D1 are both connected to one of the positive electrode or the negative electrode of the power supply, and the negative electrode of the diode D2 and the positive electrode of the diode D3 are both connected to the other of the positive electrode or the negative electrode of the power supply;

[0009] The negative electrode of the diode D1 is respectively connected to one end of the resistor R1, one end of the resistor R2, one end of the resistor R3, one end of the resistor R4, and the negative electrode of the diode D3. The positive electrode of the LED lamp body is respectively connected to the other end of the resistor R1, the other end of the resistor R2, the other end of the resistor R3, and the other end of the resistor R4.

[0010] Furthermore, the LED lamp body includes a plurality of LED lamps connected in series in sequence.

[0011] Furthermore, the LED lamp body includes the LED lamp LED1 and the LED lamp LED2; among them, the negative electrode of the LED lamp LED2 is respectively connected to the positive electrode of the diode D4 and the positive electrode of the diode D2. The positive electrode of the LED lamp LED2 is connected to the negative electrode of the LED lamp LED1, and the positive electrode of the LED lamp LED1 is respectively connected to the other end of the resistor R1, the other end of the resistor R2, the other end of the resistor R3, and the other end of the resistor R4.

[0012] Furthermore, the negative electrode of the diode D4 and the positive electrode of the diode D1 are both connected to the positive electrode of the power supply, and the negative electrode of the diode D2 and the positive electrode of the diode D3 are both connected to the negative electrode of the power supply.

[0013] Furthermore, the negative electrode of the diode D4 and the positive electrode of the diode D1 are both connected to the negative electrode of the power supply, and the negative electrode of the diode D2 and the positive electrode of the diode D3 are both connected to the positive electrode of the power supply.

[0014] Furthermore, the resistor R1, the resistor R2, the resistor R3, and the resistor R4 are all 1206-type resistors.

[0015] The present utility model also proposes an LED circuit, which includes a plurality of LED modules as described above, and all the LED modules are connected in parallel.

[0016] Furthermore, the LED circuit includes 50 LED modules connected in parallel with each other.

[0017] Furthermore, the LED circuit further includes an AC-DC converter. The power input end of the AC-DC converter is connected to a 220V power supply, and the power output end of the AC-DC converter is connected to the LED module.

[0018] Further, the input power supply of the LED module is a 24V DC power supply.

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows: An LED module and an LED circuit include a resistor R1, a resistor R2, a resistor R3, a resistor R4, a diode D1, a diode D2, a diode D3, a diode D4, and an LED lamp body; wherein, the negative electrode of the LED lamp body is respectively connected to the positive electrode of the diode D4 and the positive electrode of the diode D2, the negative electrode of the diode D4 and the positive electrode of the diode D1 are both connected to one of the positive electrode or the negative electrode of the power supply, and the negative electrode of the diode D2 and the positive electrode of the diode D3 are both connected to the other of the positive electrode or the negative electrode of the power supply; the negative electrode of the diode D1 is respectively connected to one end of the resistor R1, one end of the resistor R2, one end of the resistor R3, one end of the resistor R4, and the negative electrode of the diode D3, and the positive electrode of the LED lamp body is respectively connected to the other end of the resistor R1, the other end of the resistor R2, the other end of the resistor R3, and the other end of the resistor R4. It can be seen that, by utilizing the unidirectional conduction characteristic of the diode, the current can only pass through the components in the forward circuit or the reverse circuit of the LED module at the same time, so as to realize the adjustment of the power output of the LED lamp body. When the LED module is connected to the main line in the forward direction, the current passes through the resistors R1 and R2 in the forward circuit. By adjusting the resistance values of the resistors R1 and R2, the power output of the LED lamp body is affected, and the purpose of adjusting the power of the forward circuit is achieved. When the LED module is connected to the main line in the reverse direction, the current passes through the resistors R3 and R4 in the reverse circuit. By adjusting the resistance values of the resistors R3 and R4, the power output of the LED lamp body is affected, and the purpose of adjusting the power of the reverse circuit is achieved. Finally, the purpose of realizing two different powers without using point control in the same LED module is achieved. The structure of the whole circuit is simple, the performance is stable and reliable, and it has strong feasibility, which can greatly improve the flexibility and applicability of the LED lamp. Description of the Drawings

[0020] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present utility model. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0021] Figure 1 It is a schematic circuit structure diagram of the LED module provided by the embodiment of the present utility model;

[0022] Figure 2Schematic diagram of the front side structure of the PCB board of the LED module provided by the embodiment of the present utility model;

[0023] Figure 3 Schematic diagram of the reverse side structure of the PCB board of the LED module provided by the embodiment of the present utility model;

[0024] Figure 4 Schematic diagram of the circuit structure of the LED circuit provided by the embodiment of the present utility model;

[0025] Figure 5 Circuit wiring diagram of the AC-DC converter provided by the embodiment of the present utility model. Specific embodiments

[0026] Next, the solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present utility model.

[0027] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, then such directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If this specific posture changes, then such directional indications will also change accordingly.

[0028] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, then such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions appears to be contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0029] Please refer to Figure 1 as shown, which is a schematic diagram of the circuit structure of the LED module provided by the embodiment of the present utility model.

[0030] The present utility model proposes an LED module, including resistor R1, resistor R2, resistor R3, resistor R4, diode D1, diode D2, diode D3, diode D4 and an LED lamp body;

[0031] Among them, the negative electrode of the LED lamp body is respectively connected to the positive electrode of the diode D4 and the positive electrode of the diode D2. The negative electrode of the diode D4 and the positive electrode of the diode D1 are both connected to one of the positive electrode or the negative electrode of the power supply, and the negative electrode of the diode D2 and the positive electrode of the diode D3 are both connected to the other of the positive electrode or the negative electrode of the power supply;

[0032] The negative electrode of the diode D1 is respectively connected to one end of the resistor R1, one end of the resistor R2, one end of the resistor R3, one end of the resistor R4, and the negative electrode of the diode D3. The positive electrode of the LED lamp body is respectively connected to the other end of the resistor R1, the other end of the resistor R2, the other end of the resistor R3, and the other end of the resistor R4.

[0033] Specifically, the dot control technology applied to the LED module realizes precise control of the display content and brightness of the entire LED module by controlling the brightness and on / off state of each LED lamp bead in the LED module. Through the dot control technology, independent control of each LED lamp bead in the LED module can be achieved, thereby realizing flexible power output. It can be seen that to achieve two different powers in a constant voltage module, the dot control technology can be used. However, the LED module of the embodiment of the present invention does not use the dot control technology, but utilizes the characteristic of the one-way conduction of the diode (specifically: the diode has the conduction ability when forward-biased, and the current can flow through the diode; while when reverse-biased, the diode will be in the cut-off state and the current cannot flow through. That is, the current can only pass through the diode in one direction). By reasonably configuring the connection modes of the four diodes, a circuit is constructed. This circuit can be divided into a forward circuit and a reverse circuit (specifically which components belong to the forward circuit and which components belong to the reverse circuit depend on the polarity of the LED module connected to the main line). The current can only pass through the components in the forward circuit or the reverse circuit in one direction, and cannot pass through both paths at the same time. That is, the LED module can only conduct the forward circuit or the reverse circuit at the same time to realize the adjustment of two different power outputs of the LED lamp body. This design can simplify the circuit structure, improve the stability and reliability of power output, and realize the output of two different powers in the same LED module, so there is no need to produce two different power LED modules, saving production costs and resources. In addition, the design using the one-way conduction characteristic of the diode does not require a complex control system and a driving chip, and only needs to adjust the resistance value of the resistor to realize different power outputs, making the entire circuit structure simpler and more convenient to realize the flexible adjustment of two different power outputs, improving the applicability and feasibility of the LED lamp.

[0034] Compared with the prior art, the LED module proposed in this embodiment utilizes the characteristic of unidirectional conduction of diodes to enable current to pass through the components in the forward circuit or the reverse circuit of the LED module only at the same time, so as to adjust the power output of the LED lamp body. When the LED module is connected to the main line in the forward direction, the current passes through the resistors R1 and R2 in the forward circuit. By adjusting the resistance values of the resistors R1 and R2, the power output of the LED lamp body is affected, and the purpose of adjusting the power of the forward circuit is achieved. When the LED module is connected to the main line in the reverse direction, the current passes through the resistors R3 and R4 in the reverse circuit. By adjusting the resistance values of the resistors R3 and R4, the power output of the LED lamp body is affected, and the purpose of adjusting the power of the reverse circuit is achieved. Finally, the purpose of realizing two different powers without using point control in the same LED module is achieved. The structure of the whole circuit is simple, the performance is stable and reliable, and it has strong feasibility, which can greatly improve the flexibility and applicability of LED lamps.

[0035] In some embodiments of the present application, the LED lamp body includes a plurality of LED lamps connected in series in sequence.

[0036] Specifically, a plurality of LED lamps are connected in sequence to form a series circuit. In the series circuit, the same current is shared among different LED lamps, and the current passes through each LED lamp in sequence. At the same time, the voltage is distributed to each LED lamp in sequence, so that each LED lamp can work normally. It can be seen that connecting multiple LED lamps in series can reduce the influence of current fluctuations on a single LED lamp, ensure that each LED lamp can obtain sufficient voltage, and improve the stability of the entire series circuit.

[0037] In some embodiments of the present application, the LED lamp body includes LED lamp LED1 and LED lamp LED2; wherein, the negative electrode of the LED lamp LED2 is respectively connected to the positive electrode of the diode D4 and the positive electrode of the diode D2, the positive electrode of the LED lamp LED2 is connected to the negative electrode of the LED lamp LED1, and the positive electrode of the LED lamp LED1 is respectively connected to the other ends of the resistor R1, the resistor R2, the resistor R3 and the resistor R4.

[0038] Specifically, both the LED lamp LED1 and the LED lamp LED2 are light-emitting diodes. A light-emitting diode is a semiconductor device that can convert electrical energy into light energy. Light-emitting diodes have the characteristics of high efficiency, energy saving, long life, fast response and rich colors. Compared with traditional light sources, light-emitting diodes are more energy-efficient, have a longer lifespan, do not contain harmful substances, are environmentally friendly, and are widely used in lighting, display screens, indicator lights, automotive lamps and other fields, and are one of the mainstreams of modern lighting and display technologies.

[0039] In some embodiments of the present application, the negative electrode of the diode D4 and the positive electrode of the diode D1 are both connected to the positive electrode of the power supply, and the negative electrode of the diode D2 and the positive electrode of the diode D3 are both connected to the negative electrode of the power supply.

[0040] In some embodiments of the present application, the negative electrode of the diode D4 and the positive electrode of the diode D1 are both connected to the negative electrode of the power supply, and the negative electrode of the diode D2 and the positive electrode of the diode D3 are both connected to the positive electrode of the power supply.

[0041] Specifically, the above two embodiments clarify two main-line polarity connection methods of the LED module. In the actual application process, the appropriate connection method can be selected according to specific requirements. The clear polarity connection relationship can be used as a guide for circuit design and assembly, helping engineers or manufacturers correctly connect the LED module to the power supply, improving the installation efficiency, and reducing the later maintenance cost.

[0042] Specifically, as Figure 1 shown, if the upper main line is the positive electrode of the power supply and the lower main line is the negative electrode of the power supply, the power of the forward circuit is adjusted by adjusting the resistance values of the resistor R1 and the resistor R2; if the lower main line is the positive electrode of the power supply and the upper main line is the negative electrode of the power supply, the power of the negative circuit is adjusted by adjusting the resistance values of the resistor R3 and the resistor R4; thus, the requirements of two different powers for positive and negative dual access of the same LED module are realized.

[0043] In some embodiments of the present application, the resistor R1, the resistor R2, the resistor R3, and the resistor R4 are all 1206-type resistors.

[0044] Specifically, the 1206-type resistor is a surface mount resistor with a size of 12mmX6mm. Resistors of this size are suitable for surface mount soldering of various electronic devices and circuit boards and are commonly used in the production and maintenance of electronic products.

[0045] Please refer to Figure 2 and Figure 3 shown, which are the front structure schematic diagram and the back structure schematic diagram of the PCB board of the LED module provided by the embodiment of the present utility model.

[0046] The LED module of the embodiment of the present utility model is a constant voltage module that utilizes the unidirectional conduction characteristic of diodes to achieve positive and negative dual access of different powers. During the installation process, only simple positive and negative markings are required, and there is no need to arrange additional technicians for installation, greatly saving labor costs. Moreover, even if the positive and negative wires are connected incorrectly, there is no risk, and the safety factor is high. In addition, this LED module only requires relatively few material costs, and the production cost is greatly reduced. However, for the LED module of this embodiment, four diodes (diode D1, diode D2, diode D3, and diode D4 respectively) are used. Then, these four diodes need to occupy a certain PCB space, and more considerations need to be given to space issues in the component layout arrangement. And the diodes themselves will generate a voltage drop that cannot be ignored, and the number of cascades is still limited. All these factors need to be considered during the design and production of the LED module.

[0047] The following is an embodiment of the LED circuit provided by the present utility model. The embodiment of the LED circuit and the embodiment of the above-mentioned LED module belong to the same concept. For the details not described in detail in the embodiment of the LED circuit, reference can be made to the embodiment of the above-mentioned LED module.

[0048] Please refer to Figure 4 As shown, it is a schematic diagram of the circuit structure of the LED circuit provided by the embodiment of the present utility model.

[0049] The present utility model also proposes an LED circuit, which includes a plurality of the above-mentioned LED modules, and all the LED modules are connected in parallel.

[0050] Specifically, all the LED modules in the LED circuit are connected in parallel. Each LED module can work independently and is not affected by other LED modules. Even if one or more LED modules fail, the other LED modules can still work normally without affecting the overall lighting effect, and it has high reliability. And because all the LED modules are connected in parallel, it is easier to maintain and replace the LED modules later, which is suitable for lighting systems that require flexible control of power output.

[0051] In some embodiments of the present application, the LED circuit includes 50 LED modules connected in parallel with each other.

[0052] Specifically, the number of LED modules in the LED circuit is generally designed and selected according to factors such as lighting requirements, light intensity, and lighting range. The 50 LED modules connected in parallel are the number determined based on design requirements and performance considerations. In actual design, it can also be adjusted and optimized according to specific situations to ensure the performance and stability of the LED circuit.

[0053] Please refer to Figure 5As shown, it is the circuit wiring diagram of the AC-DC converter provided by the embodiment of the present utility model.

[0054] In some embodiments of the present application, the LED circuit further includes an AC-DC converter. The power input terminal of the AC-DC converter is connected to a 220V power supply, and the power output terminal of the AC-DC converter is connected to the LED module.

[0055] Specifically, an AC-DC (Alternating Current-Direct Current) converter is an electronic device used to convert alternating current (AC) into direct current (DC). In many electronic devices and circuits, a DC power supply is required for power supply, while AC power is a common form of power supply from the power grid. Therefore, the AC-DC converter plays the role of converting AC power into DC power. An AC-DC converter generally includes components such as a rectifier, a filter, and a voltage regulator. The rectifier converts the AC power into pulsating DC power, then the pulsating part is removed through the filter, and finally the output voltage is stabilized at the required level through the voltage regulator. In this way, the AC power can be converted into a stable DC power supply to meet the power supply requirements of electronic devices. AC-DC converters are widely used in various electronic devices, such as computer power supplies, mobile phone chargers, household appliances, etc., playing the role of a bridge between the AC power supply and DC devices, providing a stable and reliable power supply for the devices.

[0056] In some embodiments of the present application, the input power supply of the LED module is a 24V DC power supply.

[0057] Specifically, the 24V DC power supply is the input power supply of the LED module. The 24V DC power supply can provide the appropriate voltage range required for the LED module to ensure the stable brightness and performance of the LED module. In addition, the 24V DC power supply is a common power supply standard. Selecting this input power supply can improve the compatibility of the LED module with other devices or systems, facilitate integration and connection, and thus improve the applicability of the LED circuit.

[0058] The LED circuit provided by this embodiment can achieve two powers without using point control in the same LED module, with a simple structure and strong feasibility.

[0059] Since the LED circuit of the present utility model includes the above-mentioned LED module, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned LED module embodiments, which will not be elaborated one by one here.

[0060] It should be noted that the technical solutions between the various embodiments of the present utility model can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0061] The above are only partial or preferred embodiments of the present utility model. Whether in words or in drawings, the scope of protection of the present utility model cannot be limited thereby. Any equivalent structural transformation made by using the content of the specification and drawings of the present utility model under the overall concept of the present utility model, or any direct / indirect application in other related technical fields is included in the scope of protection of the present utility model.

Claims

1. An LED module, characterized in that: It includes a resistor R1, a resistor R2, a resistor R3, a resistor R4, a diode D1, a diode D2, a diode D3, a diode D4 and an LED lamp body; The cathode of the LED lamp body is respectively connected to the anode of the diode D4 and the anode of the diode D2, the cathode of the diode D4 and the anode of the diode D1 are both connected to one of the positive or negative electrodes of the power supply, and the cathode of the diode D2 and the anode of the diode D3 are both connected to the other of the positive or negative electrodes of the power supply; The cathode of the diode D1 is respectively connected to one end of the resistor R1, one end of the resistor R2, one end of the resistor R3, one end of the resistor R4 and the cathode of the diode D3, and the anode of the LED lamp body is respectively connected to the other end of the resistor R1, the other end of the resistor R2, the other end of the resistor R3 and the other end of the resistor R4.

2. The LED module according to claim 1, characterized in that: The LED lamp body comprises a plurality of LED lamps connected in series.

3. The LED module according to claim 1, characterized in that: The LED lamp body includes an LED lamp LED1 and an LED lamp LED2; wherein the cathode of the LED lamp LED2 is respectively connected to the anode of the diode D4 and the anode of the diode D2, the anode of the LED lamp LED2 is connected to the cathode of the LED lamp LED1, and the anode of the LED lamp LED1 is respectively connected to the other end of the resistor R1, the other end of the resistor R2, the other end of the resistor R3 and the other end of the resistor R4.

4. The LED module according to claim 3, characterized in that: The cathode of the diode D4 and the anode of the diode D1 are both connected to the anode of the power supply, and the cathode of the diode D2 and the anode of the diode D3 are both connected to the cathode of the power supply.

5. The LED module according to claim 3, characterized in that: The cathode of the diode D4 and the anode of the diode D1 are both connected to the cathode of the power supply, and the cathode of the diode D2 and the anode of the diode D3 are both connected to the anode of the power supply.

6. The LED module according to claim 1, characterized in that: The resistor R1, the resistor R2, the resistor R3 and the resistor R4 are all 1206 type resistors.

7. An LED circuit, characterized in that: It comprises a plurality of LED modules as claimed in any one of claims 1 to 6, all of the LED modules are connected in parallel.

8. The LED circuit according to claim 7, characterized in that: It comprises 50 LED modules connected in parallel.

9. The LED circuit according to claim 7, characterized in that: It also includes an AC-DC converter, wherein a power input end of the AC-DC converter is connected to a 220V power supply, and a power output end of the AC-DC converter is connected to the LED module.

10. The LED circuit according to claim 9, characterized in that: The input power supply of the LED module is a 24V DC power supply.

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