Light-emitting module and lamp

Abstract

The embodiment of the utility model provides a light-emitting module and a lamp, and relates to the field of lighting devices. The light-emitting module comprises a packaging shell, a light-emitting unit and a filter circuit. The packaging shell is provided with a positive electrode port, a control signal input port, a control signal output port and a negative electrode port, the positive electrode port is electrically connected with a positive electrode of an external power supply module, and the light-emitting unit is arranged in the packaging shell and connected between the positive electrode port and the negative electrode port. The filter circuit is arranged in the packaging shell and electrically connected between the control signal input port and the control signal output port, and the filter circuit is used for suppressing electromagnetic interference generated by the control chip. According to the light-emitting module, the filter circuit is arranged between the control signal input port and the control signal output port, so that the size of a lamp and the production cost are reduced on the basis of reducing electromagnetic interference.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of lighting appliances, and in particular to a light-emitting module and a lamp. BACKGROUND

[0002] The existing LED lamps usually adopt a switching power supply for driving. Such a power supply generates high current and voltage change rate when working, thereby generating strong electromagnetic interference (EMI). The electromagnetic interference (EMI) will interfere with the normal work of the electronic components in the LED lamp, thereby reducing the performance and service life of the lamp. An electromagnetic interference (EMI) suppression device is usually arranged on an external circuit board to improve the EMI performance. ) However, the arrangement of the EMI suppression device on the external circuit board needs to occupy a certain circuit board area or needs to arrange an interface for welding the EMI suppression device, thereby additionally increasing the volume and production cost of the lamp. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the embodiments of the present application provide a light-emitting module and a lamp to solve the above technical problems.

[0004] According to a first aspect of the present application, the embodiments of the present application provide a light-emitting module. The light-emitting module comprises a package shell, a light-emitting unit and a filter circuit. The package shell is provided with a positive electrode port, a control signal input port, a control signal output port and a negative electrode port, the positive electrode port is used for electrically connecting a positive electrode of an external power module, the light-emitting unit is arranged in the package shell and is connected between the positive electrode port and the negative electrode port. The filter circuit is arranged in the package shell and is electrically connected between the control signal input port and the control signal output port, and the filter circuit is used for suppressing electromagnetic interference generated by a control chip.

[0005] In some embodiments, the filter circuit is provided with a low-pass filter.

[0006] In some embodiments, the filter circuit comprises a first impedance unit and a second impedance unit, and the first impedance unit and the second impedance unit are connected in series between the control signal input port and the control signal output port.

[0007] In some embodiments, the first impedance unit comprises an inductor, the second impedance unit comprises a resistor, the filter circuit further comprises a connection node, the connection node is arranged between the first impedance unit and the second impedance unit, and the connection node is grounded.

[0008] In some embodiments, the first impedance unit comprises an inductor, the second impedance unit comprises a resistor, the filter circuit further comprises a capacitor, one end of the capacitor is connected to the connection node, and the other end is grounded.

[0009] In some embodiments, the first impedance unit comprises a magnetic bead, the second impedance unit comprises a resistor, and the connection node is directly grounded.

[0010] In some embodiments, the first impedance unit comprises a magnetic bead, and the second impedance unit comprises a resistor. The filter circuit further comprises a capacitor, one end of the capacitor being connected to the connection node and the other end being grounded; the connection node is grounded through the capacitor.

[0011] In some embodiments, the control chip is arranged in the packaging shell and connected between the positive electrode port and the negative electrode port, and the control chip is further connected to the control signal input port and electrically connected to the light-emitting unit for controlling the light-emitting unit to work.

[0012] In some embodiments, the power module comprises a current converter, the current converter having an input end and an output end, the input end being used for connecting to alternating current, and the current converter being used for converting the alternating current into direct current and outputting the direct current through the output end to form the positive electrode of the power module.

[0013] According to a second aspect of the present application, the application provides a lamp, the lamp comprising the light-emitting module of any one of the above-mentioned embodiments and a controller and a power module. The controller is electrically connected to the control signal input port, the positive electrode port is connected to the positive electrode of the power module, and the negative electrode port is connected to the negative electrode of the power module.

[0014] Compared with the prior art, the application provides a light-emitting module, the packaging shell of the light-emitting module being provided with a positive electrode port, a control signal input port, a control signal output port and a negative electrode port. The light-emitting unit is electrically connected between the positive electrode port and the negative electrode port, and the filter circuit is electrically connected between the control signal input port and the control signal output port. By integrating the light-emitting unit and the filter circuit in the packaging shell, on the one hand, the electromagnetic interference possibly generated by the control chip during work can be reduced, the stability and reliability of the light-emitting module can be improved, the interference on other electronic devices can be reduced, and the electromagnetic compatibility of the whole system can be improved; on the other hand, no additional circuit board area or additional interface for welding an EMI suppression device is needed, so that the volume of the lamp can be reduced and the production cost can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings described in the following only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0016] Figure 1 is a structural schematic diagram of a light-emitting module provided by the application.

[0017] Figure 2 is Figure 1 a circuit structure diagram of the light emitting module shown in

[0018] Figure 3 is a structural schematic diagram of a lamp provided by an embodiment of the present application.

[0019] Figure 4 is Figure 2 a circuit structure diagram of a filter circuit in the light emitting module shown in

[0020] Figure 5 is Figure 4 another circuit structure diagram of the filter circuit shown in

[0021] Figure 6 is a circuit structure schematic diagram of a lamp provided by an embodiment of the present application.

[0022] Figure 7 is another structural schematic diagram of a lamp provided by an embodiment of the present application. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0024] It should be noted that when an element / component is referred to as being “fixed” to another element / component, it can be directly on the other element / component or there can be an intervening element / component. When an element / component is referred to as being “connected” to another element / component, it can be directly connected to the other element / component or there can be an intervening element / component; also, when an element / component is referred to as being “connected” to another element / component, it can be integrally formed with or assembled with the other element / component. When an element / component is referred to as being “disposed” on another element / component, it can be directly on the other element / component or there can be an intervening element / component.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing the specific embodiments only and is not intended to be limiting of the application. As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items.

[0026] Please refer toFigures 1 to 2 The embodiment of the present application provides a light-emitting module 100, which comprises a package shell 10, a light-emitting unit 20 and a filter circuit 40. The package shell 10 is provided with a plurality of metal ports for connecting external circuits. The light-emitting module 100 can be used in various lighting scenes, such as home lighting, commercial lighting, traffic signal lights, decorative lighting and the like, according to the light-emitting unit 20 carried. In the embodiment, the light-emitting unit 20 is an LED lamp bead, which has the performances of high energy efficiency, long service life, fast response, adjustable light, rich color and the like. It should be noted that the light-emitting unit 20 can also be a bulb, a fluorescent lamp tube, an optical fiber and the like, and the embodiment does not make any limitation.

[0027] Specifically, in the embodiment of the present application, the package shell 10 is provided with a positive electrode port 11, a control signal input port 12, a control signal output port 13 and a negative electrode port 14, the positive electrode port 11 is used for electrically connecting the positive electrode of an external power module 60. The light-emitting unit 20 is arranged in the package shell 10 and connected between the positive electrode port 11 and the negative electrode port 14. The filter circuit 40 is arranged in the package shell 10 and electrically connected between the control signal input port 12 and the control signal output port 13, and the filter circuit 40 is used for suppressing electromagnetic interference generated by the control chip 30. The control chip 30 can be built-in in the light-emitting module 100 or externally arranged in the light-emitting module 100, and the embodiment does not make any limitation. In order to facilitate the description, the description takes the control chip 30 built-in in the light-emitting module 100 as an example. Specifically, the control chip 30 is arranged in the package shell 10 and connected between the positive electrode port 11 and the negative electrode port 14. The control chip 30 is also connected to the control signal input port 12 and electrically connected to the light-emitting unit 20, so as to control the light-emitting unit 20 to work. The filter circuit 40 can be arranged between the control chip 30 and the control signal output port 13.

[0028] By integrating the light-emitting unit 20 and the filter circuit 40 in the package shell 10, on the one hand, the electromagnetic interference possibly generated by the control chip 30 in the working process can be reduced, the stability and reliability of the light-emitting module 100 are improved, the interference on other electronic devices is reduced, and the electromagnetic compatibility of the whole system is improved. On the other hand, the circuit board area is not additionally occupied or the interface of the welding EMI suppression part is not additionally arranged, so that the volume of the lamp 200 is reduced and the production cost is reduced.

[0029] Next, the components of the light-emitting module 100 and the specific structures of the components will be introduced one by one.

[0030] Please refer to Figure 1In the embodiment, the packaging shell 10 is used to form a physical barrier and encapsulate the mounting components, so as to prevent external factors such as impact, humidity, dust, etc. from damaging the mounting components, thereby improving the reliability and durability of the light-emitting module 100. The packaging shell 10 includes a bottom plate 15 and a light-transmitting cover 16, the light-transmitting cover 16 covers the bottom plate 15 and jointly defines a containing space 161, and the mounting components are arranged in the containing space 161. The mounting components can be light-emitting units 20, control chips 30, heat dissipation heat sinks, etc. and the embodiment is not limited in this regard.

[0031] In the embodiment, the bottom plate 15 is generally flat, which is used to provide physical support for the mounting components and play a role in heat conduction and electrical connection. The bottom plate 15 can be an insulating substrate with insulation and heat conduction functions. As an example, the bottom plate 15 can include an aluminum nitride ceramic substrate, or other insulating materials such as plastic plates, glass fiber plates, etc. It should be noted that the bottom plate 15 can also be a metal substrate, a silicon material substrate, etc. with high thermal conductivity, and the embodiment is not limited in this regard.

[0032] In the embodiment, the light-transmitting cover 16 is used to improve the uniformity of the outgoing light. The light-transmitting cover 16 includes a cover body 162, one end of the cover body 162 is provided with an opening (not shown in the figure), the opening is in communication with the containing space 161, and the light-transmitting cover 16 is detachably connected to the bottom plate 15, facilitating maintenance and management. The material of the light-transmitting cover 16 can include ABS plastic, PC plastic or other hard plastic, which not only reduces the weight of the light-transmitting cover 16 to achieve lightweight, but also enables the light-transmitting cover 16 to have certain stability, thereby effectively protecting the mounting components. On the other hand, the plastic material has the characteristics of low cost, good plasticity, easy processing and not easy to break, etc., which can reduce the production cost of the light-transmitting cover 16 and thus the production cost of the lamp 200. It should be noted that the material of the light-transmitting cover 16 can also be light-transmitting glass, silica gel, etc. and the external contour of the light-transmitting cover 16 can be cylindrical, cubic, spherical, etc. and the embodiment is not limited in this regard.

[0033] In the embodiment, the light-emitting unit 20 is arranged in the containing space 161, and the light-emitting unit 20 is used to form illuminating light or decorative light. The light-emitting unit 20 can include one or more light-emitting elements, such as the above-mentioned LED lamp beads, light bulbs, fluorescent tubes, optical fibers, etc. and the embodiment is not limited in this regard. As an example, the light-emitting unit 20 includes at least one LED lamp bead, and the color and output power of each LED lamp bead can be different, which can form outgoing light of different colors, thereby forming multiple light effects and improving the visual experience of users. Each lamp bead can be independent of each other or can be connected in series through wires, and the embodiment is not limited in this regard.

[0034] The control chip 30 can be arranged on the bottom plate 15 and spaced apart from the light emitting unit 20. On one hand, the arrangement facilitates the arrangement of the conductive traces and the installation and maintenance of the control chip 30 and the light emitting unit 20. On the other hand, the arrangement can reduce the concentration of heat, facilitate the heat dissipation of the control chip 30 and the light emitting unit 20, and prolong the service life of the control chip 30 and the light emitting unit 20. Meanwhile, the arrangement can reduce the electromagnetic interference between the control chip 30 and the light emitting unit 20, and improve the stability and reliability of the circuit. The control chip 30 is electrically connected to the light emitting unit 20, and is configured to control the working characteristics of the light emitting unit 20, such as brightness, color, flicker, etc. Specifically, the control chip 30 is an LED chip integrated circuit. A program with an address code is written into the control chip 30 in advance. Thus, when the light emitting unit 20 receives a corresponding control signal, the light emitting unit 20 emits light.

[0035] Please refer to Figure 2 and Figure 3 In the embodiment, the package shell 10 is provided with the positive electrode port 11, the control signal input port 12, the control signal output port 13, and the negative electrode port 14 which are spaced apart from each other. The positive electrode port 11, the control signal input port 12, the control signal output port 13, and the negative electrode port 14 can be connection pads. The connection wires 50 are arranged to pass through the connection pads and are connected to the light emitting unit 20 and the control chip 30. Specifically, the bottom plate 15 has opposite first and second sides 151 and 152. The positive electrode port 11 can be connected to the light emitting unit 20 and the control chip 30 through the connection wires 50. The positive electrode port 11 is also connected to the positive electrode of the power supply module 60 to supply power to the light emitting unit 20 and the control chip 30. The connection wires 50 are arranged inside the light emitting module 100 and are used to electrically connect the light emitting unit 20 to the positive electrode port 11 and the negative electrode port 14, and to electrically connect the control chip 30 to the positive electrode port 11 and the negative electrode port 14. The surface of the connection wires 50 is covered with an insulating layer (not shown in the figure) to prevent electrical short circuit. In some other examples, the positive electrode port 11, the control signal input port 12, the control signal output port 13, and the negative electrode port 14 can be implemented in the form of metal inserts, metal ports, or metal patches, instead of the form of connection pads.

[0036] The positive electrode port 11 is used to electrically connect the positive electrode of the external power supply module 60 to the light emitting unit 20 and the control chip 30 to supply power to the light emitting module 100. As an example, the positive electrode port 11 can be arranged inside the accommodation space 161. In the embodiment, the positive electrode port 11 is arranged on the side wall of the bottom plate 15 and protrudes away from the accommodation space 161. Specifically, the positive electrode port 11 is arranged on the side wall of the bottom plate 15. The positive electrode port 11 can extend from the first side 151 to the second side 152. The two ends of the positive electrode port 11 can be electrically connected through metal wires, metal patches, or other structures, so that the metal wires are arranged in a regular manner.

[0037] In the embodiment, the negative port 14 and the positive port 11 are arranged on the bottom plate 15, and the negative port 14 can be electrically connected to the light-emitting unit 20 and the control chip 30 by metal wires, and connected to the negative electrode of the power module 60, so that the light-emitting module 100 and the power module 60 form a closed loop. In the embodiment, the negative port 14 can be arranged on the side wall of the bottom plate 15 and extend from the first side 151 to the second side 152. Similarly, the negative port 14 can also be arranged inside the accommodating space 161.

[0038] In the embodiment, the control signal input port 12 and the control signal output port 13 are arranged on the two sides of the bottom plate 15, and the control chip 30 is electrically connected between the control signal input port 12 and the control signal output port 13 by the connecting wire 50. Specifically, the control signal input port 12 is arranged on the first side 151, and the control signal output port 13 is arranged on the second side 152. The control signal input port 12 and the control signal output port 13 can be connected by the connecting wire 50, and the control chip 30 can obtain the control signal from the connecting wire 50. As an example, the control chip 30 is electrically connected to the connecting wire 50, so that the control chip 30 can receive the control signal or control information transmitted on the connecting wire 50. As another example, the control chip 30 can also be arranged between the control signal input port 12 and the control signal output port 13, so that the control signal is transmitted to the control chip 30 through the control signal input port 12 and then output from the control signal output port 13, specifically to the control chip 30 of the adjacent light-emitting module 100.

[0039] Please refer to Figure 2 , Figure 4 and Figure 5In order to improve the electromagnetic interference formed by the control chip 30, the filter circuit 40 is electrically connected between the control chip 30 and the control signal output port 13, and the filter circuit 40 is used to suppress the electromagnetic interference generated by the control chip 30, thereby improving the reliability and performance of the entire system. Specifically, the filter circuit 40 is provided with a low-pass filter, which is configured to express low impedance characteristics at low frequency signals, so that low frequency signals can pass through the filter circuit 40 more easily, while high frequency signals are suppressed. While at high frequency signals, the filter circuit 40 expresses high impedance characteristics, so that high frequency signals can pass through the filter circuit 40 more easily, while low frequency signals are suppressed, thereby achieving the filtering effect. In the embodiment, the filter circuit 40 can include a plurality of impedance elements and a connection node 43, the impedance elements are electrically connected between the control chip 30 and the control signal output port 13, and the connection node 43 is used for grounding. The impedance elements can be magnetic beads, capacitors, inductors, resistors, etc., which are not specifically limited in the embodiment. As an example, the impedance elements can include a first impedance unit 41 and a second impedance unit 42, which are connected in series between the control chip 30 and the control signal output port 13. Among them, the first impedance unit 41 can constitute the above-mentioned low-pass filter. By setting the first impedance unit 41 and the second impedance unit 42, the noise and interference from the control chip 30 to the control signal output port 13 can be reduced, and the stability and accuracy of the control signal can be ensured. In addition, the grounded connection node 43 provides a low impedance path, so that the high frequency noise generated by the control chip 30 can be guided to the ground, thereby reducing the influence of these noises on other circuits and reducing electromagnetic interference. It should be noted that the connection node 43 can not be a specific node, but can be any node between the first impedance unit 41 and the second impedance unit 42 and having the same potential as the above-mentioned connection node.

[0040] As a specific example, the first impedance unit 41 can include an inductor, the second impedance unit 42 can include a resistor, and the connection node 43 is directly grounded, i.e., the connection node is directly connected to a grounding point by a wire, without other electronic elements between them. The inductor has the characteristic of exhibiting low impedance at low frequencies and high impedance at high frequencies, which constitutes the low-pass filter described above. Selecting an inductor with a suitable impedance curve can both suppress the high-frequency noise generated by the control chip 30 and not affect the transmission of low-frequency signals, thereby ensuring the stability of the control signal. The resistor in the filter circuit 40 plays a role in stabilizing the direct current signal, which can limit the direct current passing through the inductor to ensure the stability of the control signal. In addition, the combination of the resistor and the inductor can reduce signal distortion such as overshoot, undershoot, and reflection during transmission, thereby enhancing the integrity of the signal. Further, in some embodiments, the filter circuit 40 can also include a capacitor 44, one end of the capacitor 44 being connected to the connection node 43 and the other end being grounded, and the connection node 43 being grounded through the capacitor 44. By setting the capacitor 44 to form a low-pass filter, the high-frequency noise generated by the control chip 30 can be further suppressed, and the problem of signal overshoot can be improved.

[0041] As another specific example, the first impedance unit 41 can include a magnetic bead, the second impedance unit 42 can include a resistor, and the connection node 43 is directly grounded, i.e., the connection node is directly connected to a grounding point by a wire, without other electronic elements between them. The magnetic bead is usually made of ferrite material, which exhibits high resistivity and low inductance at high frequencies to constitute the low-pass filter described above, thereby having a large impedance to high-frequency noise. This allows the magnetic bead to absorb and convert into heat energy, reducing the transmission and radiation of noise along the circuit. The resistor is used to limit the direct current passing through the magnetic bead to ensure the stability of the control signal. In addition, the combination of the resistor and the magnetic bead can reduce signal distortion such as overshoot, undershoot, and reflection during transmission, thereby enhancing the integrity of the signal. Similarly, to further suppress the high-frequency noise generated by the control chip 30, in some embodiments, the filter circuit 40 can also include a capacitor 44. One end of the capacitor 44 is connected to the connection node 43 and the other end is grounded, and the connection node 43 is grounded through the capacitor 44. By setting the capacitor 44 to form a low-pass filter, the high-frequency noise generated by the control chip 30 can be further suppressed, and the problem of signal overshoot can be improved.

[0042] As another specific example, the first impedance unit 41 can also include a resistor, the second impedance unit 42 can include a resistor, and the connection node 43 is directly grounded, that is, the connection node is directly connected to the grounding point through a wire, without other electronic elements between them. The two resistors in series constitute a low-pass filter circuit 40, which allows direct current or low-frequency signals to pass through while suppressing high-frequency noise. The resistance value of the resistor in this embodiment is not specifically limited, and a suitable resistance value can be selected according to actual needs to ensure the stability of signal transmission. Similarly, in order to further suppress the high-frequency noise generated by the control chip 30, the filter circuit 40 can also include a capacitor 44 in some embodiments. One end of the capacitor 44 is connected to the connection node 43, and the other end is grounded, and the connection node 43 is grounded through the capacitor 44.

[0043] By integrating the above-mentioned light-emitting unit 20, control chip 30 and filter circuit 40 in the packaging shell 10, on the one hand, the electromagnetic interference that the control chip 30 can generate during operation can be reduced, the stability and reliability of the light-emitting module 100 can be improved. And reduce the interference to other electronic devices, improve the electromagnetic compatibility of the whole system; on the other hand, it is not necessary to additionally occupy the circuit board area or additionally set the interface of the soldered EMI suppression device, thereby reducing the volume of the lamp 200 and reducing the production cost.

[0044] Please refer to Figure 2 and Figure 6 In this embodiment, a lamp 200 with a light-emitting module 100 is also provided, which can be a lamp strip or a lamp string, and is used to emit light of corresponding colors according to a control signal to provide lighting, indication, reminder and the like. For example, emitting white light, red light, blue light, green light or other mixed color light, etc. The lamp 200 includes the above-mentioned light-emitting module 100, controller 70 and power supply module 60. Specifically, the controller 70 is electrically connected to the control signal input port 12, which is responsible for receiving user instructions and adjusting the working state of the lamp 200. The controller 70 can be an integrated microcontroller 70 or an application-specific integrated circuit to realize functions such as brightness adjustment, color change, scene mode setting, timing switch and communication with a smart home system. The controller 70 also has fault detection and protection functions, such as overheat protection and short circuit protection, to ensure the safe and reliable operation of the lamp 200. The power supply module 60 is used to convert an external power source (such as alternating current or a battery) into a voltage and current required by the lamp 200 to ensure the safe, stable and efficient operation of the lamp 200. The positive electrode of the power supply module 60 is connected to the first positive electrode port 11 and the second positive electrode port 11, and the negative electrode of the power supply can be connected to the negative electrode port 14, so that the light-emitting module 100 and the power supply module 60 form a closed loop.

[0045] Specifically, please refer to Figure 1 , Figure 2 andFigure 6 The power module 60 includes a current converter 61 for converting alternating current into direct current required for the operation of the light-emitting module 100. The current converter 61 has an input end 611 for receiving alternating current and an output end 612 for outputting rectified voltage and current to the light-emitting module 100 according to the current and voltage required for the operation of the light-emitting module 100. The output end 612 of the current converter 61 is connected to the positive port 11 of the light-emitting module 100 via the connecting wire 50 to supply power to the light-emitting unit 20 and the control chip 30. It should be understood that the rectification process can be to increase or decrease the current output by the battery to ensure safe operation.

[0046] In the embodiment, the connecting wire 50 is also connected between the light-emitting module 100 and the power module 60, and can also be arranged between adjacent light-emitting modules 100. Specifically, the surface of the connecting wire 50 is covered with an insulating layer (not shown in the figure) to prevent electrical short circuit and electric shock. The connecting wire 50 can include a power positive wire 51, a control signal wire 52, and a power negative wire 53. The power positive wire 51 is connected between the positive of the power module 60 and the positive port 11, the control signal wire 52 is connected between the controller 70 and the control signal input port 12 and sequentially connected to the control chip 30, the filter circuit 40, and the control signal output port 13, and the power negative wire 53 can be connected between the negative of the power module 60 and the negative port 14.

[0047] Please refer to Figure 7 In some embodiments, the number of light-emitting modules 100 can be multiple, and the multiple light-emitting modules 100 are arranged on the connecting wire 50 at intervals. As an example, the multiple light-emitting modules 100 are arranged in an array and are sequentially connected in series on the connecting wire 50. Specifically, the multiple light-emitting modules 100 are sequentially arranged in a linear array, which can be a single long strip or multiple long strips, and the embodiment does not limit this. As another example, the multiple light-emitting modules 100 are sequentially arranged in a circular array, which can be a circular array, a radial array, or a rectangular array, and the embodiment does not limit this. It should be noted that the arrangement of the multiple light-emitting modules 100 is not limited to the linear array and the circular array mentioned above, but can also be a curved array, a matrix array, and the like. By arranging different arrays and numbers of arrays, a specific lighting light effect or decorative light effect can be formed, and the light distribution brightness and uniformity of the lighting area or the decorative area can be improved, thereby improving the visual experience of the user.

[0048] In the embodiment, the number and color of the light emitting units 20 of each light emitting module 100 can be different, so as to form various lighting or decorative light effects. The lamp 200 can further include a lamp panel 201, which can be a circuit board or a dielectric substrate. The connecting wires 50 can be independent metal wires or conductive tracks integrated on the lamp panel 201, and the embodiment is not limited in this regard. The lamp panel 201 is further provided with a plurality of connecting pads 2011 for mounting the light emitting modules 100. Specifically, the connecting pads 2011 can be connected and fixed with the positive port 11, the control signal input port 12, the control signal output port 13, and the negative port 14.

[0049] In other embodiments, the connecting pads 2011 can also be connected to the light emitting modules 100 by metal wires. The plurality of connecting pads 2011 and the plurality of light emitting modules 100 are one-to-one corresponding connection, and at the same time, the controller 70 can output a plurality of control signals, and the plurality of control signals and the plurality of light emitting modules 100 are one-to-one corresponding arrangement, which can realize single-point control and improve the working stability and reliability of the lamp 200. As an example, the control signal can include a color display signal, and the control chip 30 in the light emitting module 100 can receive the color display signal from the controller 70. When the color display signal is red, the control chip 30 controls the light emitting unit 20 to display red; when the color display signal is blue, the control chip 30 controls the light emitting unit 20 to display blue. It should be noted that the color signal in the control signal received by the control chip 30 of the plurality of light emitting modules 100 can be the same or different, so as to form various lighting or decorative light effects.

[0050] Specifically, each light emitting module 100 is arranged on the connecting pad 2011 in a predetermined order, each light emitting module 100 has a specific address code, and each address code is different. The address code is a unique identifier for identifying and distinguishing each light emitting module 100. The controller 70 sends an operation instruction containing address code information to the control chip 30 in each light emitting module 100 through the control signal line 52, and the control chip 30 obtains the instruction information matched with the address code, so as to realize single-point control of the lamp 200. On the one hand, it can avoid the simultaneous damage of the light emitting modules 100, and ensure the light emitting reliability and stability of the lamp 200; on the other hand, it can realize various lighting or decorative effects, and improve the user experience.

[0051] As an example, the input manner of the specific address code can be that the address code is written in the light emitting unit 20 in the light emitting module 100 in advance by a burner, and the light emitting module 100 after writing the address code is welded to the corresponding connection pad 2011 in the address order. As another example, the light emitting module 100 can be welded to the connection pad 2011 in sequence, and then the specific address code is written after scanning each light emitting unit 20 by the burner.

[0052] It should be noted that when each light emitting module 100 includes a plurality of light emitting units 20, the address code of each light emitting unit 20 can be the same or different, and the embodiment is not limited thereto. It can be understood that the more address codes corresponding to the light emitting units 20 in each light emitting module 100, the richer the lighting light effect or decorative light effect formed.

[0053] In summary, the embodiment of the present application provides a light emitting module 100, and the package shell 10 of the light emitting module 100 is provided with a positive electrode port 11, a control signal input port 12, a control signal output port 13 and a negative electrode port 14. The light emitting unit 20 is electrically connected between the positive electrode port 11 and the negative electrode port 14, and the filter circuit 40 is electrically connected between the control signal input port 12 and the control signal output port 13. By integrating the light emitting unit 20 and the filter circuit 40 in the package shell 10, on the one hand, the electromagnetic interference that can be generated by the control chip 30 during the working process can be reduced, the stability and reliability of the light emitting module 100 can be improved. And reduce the interference to other electronic devices, improve the electromagnetic compatibility of the whole system; on the other hand, no additional circuit board area is occupied or an interface of an additional welding EMI suppression device is provided, so as to reduce the volume of the lamp 200 and reduce the production cost.

[0054] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0055] In addition, the terms "first", "second", etc. are used only for the purpose of description, and should not be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that the technical solutions described in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A light-emitting module, characterized in that, include: The package includes a positive port, a control signal input port, a control signal output port, and a negative port. The positive port is used to electrically connect to the positive terminal of an external power module. A light-emitting unit is disposed inside the encapsulation shell and connected between the positive terminal and the negative terminal; as well as A filtering circuit is disposed within the package and electrically connected between the control signal input port and the control signal output port; the filtering circuit is used to suppress electromagnetic interference generated by the control chip.

2. The light-emitting module as described in claim 1, characterized in that, The filtering circuit is equipped with a low-pass filter.

3. The light-emitting module as described in claim 1, characterized in that, The filtering circuit includes a first impedance unit and a second impedance unit, which are connected in series between the control signal input port and the control signal output port.

4. The light-emitting module as described in claim 3, characterized in that, The first impedance unit includes an inductor, the second impedance unit includes a resistor, and the filter circuit further includes a connection node, which is disposed between the first impedance unit and the second impedance unit and is grounded.

5. The light-emitting module as described in claim 4, characterized in that, The first impedance unit includes an inductor, the second impedance unit includes a resistor, and the filter circuit further includes a capacitor, one end of which is connected to the connection node and the other end is grounded.

6. The light-emitting module as described in claim 4, characterized in that, The first impedance unit includes a ferrite bead, the second impedance unit includes a resistor, and the connection node is directly grounded.

7. The light-emitting module as described in claim 4, characterized in that, The first impedance unit includes a ferrite bead, the second impedance unit includes a resistor, and the filter circuit further includes a capacitor. One end of the capacitor is connected to the connection node, and the other end is grounded. The connection node is grounded through the capacitor.

8. The light-emitting module as described in claim 1, characterized in that, The control chip is disposed inside the package and connected between the positive port and the negative port. The control chip is also connected to the control signal input port and electrically connected to the light-emitting unit for controlling the operation of the light-emitting unit.

9. The light-emitting module as described in any one of claims 1 to 8, characterized in that, The power module includes a current converter with an input terminal and an output terminal. The input terminal is used to connect to alternating current (AC), and the current converter is used to convert AC to direct current (DC) and output it through the output terminal to form the positive terminal of the power module.

10. A lamp, characterized in that, include: The light-emitting module as described in any one of claims 1 to 9; as well as A controller and a power module are provided, wherein the controller is electrically connected to the control signal input port; the positive port is connected to the positive terminal of the power module, and the negative port is connected to the negative terminal of the power module.

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