Light-emitting modules and lamps

Abstract

The embodiment of the present application provides a light-emitting module and a lamp, which relate to the field of lighting fixtures. The light-emitting module includes a packaging shell, a plurality of light-emitting units and a control chip, wherein the plurality of light-emitting units and the control chip are arranged in the packaging shell. The packaging shell is provided with a first positive electrode port, a second positive electrode port, a negative electrode port and a control signal port spaced apart, wherein the plurality of light-emitting units are connected between the first positive electrode port and the negative electrode port, wherein the first positive electrode port is connected to the positive electrode of the power module to power the plurality of light-emitting units. The control chip is connected in series between the second positive electrode port and the negative electrode port, wherein the second positive electrode port is connected to the positive electrode of the power module to power the control chip, and the control signal port is connected to the control chip. By setting the first positive electrode port and the second positive electrode port, the power supplies of the plurality of light-emitting units and the power supply of the control chip are independent of each other, thereby reducing the electromagnetic interference between the control chip and the plurality of light-emitting units, maintaining the stability of the power supply, and the stability and reliability of the operation of the lamp.

Description

Technical Field

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

[0002] The existing control method of LED light strings or lamps often adopts two-wire or three-wire circuit control, and uses signal cascade to transmit data. The input power of the light-emitting unit and the input power of the logic IC in the existing LED lamp beads share the same wire. When the lamp is working, the power fluctuation caused by the light-emitting unit is easy to interfere with the power supply of the logic IC, or the power fluctuation of the logic IC is easy to cause the power supply of the light-emitting unit, thereby causing abnormal light display, making it difficult to ensure the reliability and stability of the lamp operation. Summary of the invention

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

[0004] According to the first aspect of the present application, an embodiment of the present application provides a light-emitting module. The light-emitting module includes a packaging shell, a plurality of light-emitting units and a control chip. The plurality of light-emitting units and the control chip are arranged in the packaging shell. The plurality of light-emitting units are electrically connected to each other. The control chip is electrically connected to the plurality of light-emitting units to control the operation of the plurality of light-emitting units. The packaging shell is provided with a first positive electrode port, a second positive electrode port, a negative electrode port and a control signal port arranged at intervals from each other. The plurality of light-emitting units are connected between the first positive electrode port and the negative electrode port. The first positive electrode port is electrically connected to the positive electrode of the power module to power the plurality of light-emitting units. The control chip is connected in series between the second positive electrode port and the negative electrode port. The second positive electrode port is electrically connected to the positive electrode of the power module to power the control chip. The control signal port is electrically connected to the control chip.

[0005] According to the second aspect of the present application, an embodiment of the application provides a lamp, which includes the above-mentioned light-emitting module, a controller and a power module. The controller is electrically connected to the control signal port, the first positive electrode port and the second positive electrode port are respectively connected to the positive electrode of the power module, and the negative electrode port is connected to the negative electrode of the power module.

[0006] Compared with the prior art, the embodiment of the present application provides a light-emitting module, which includes a packaging shell, a plurality of light-emitting units and a control chip. The plurality of light-emitting units can improve the brightness of the light-emitting module. By setting a first positive electrode port, a second positive electrode port and a control signal port spaced apart from each other on the packaging shell of the light-emitting module, the first positive electrode port is connected to the plurality of light-emitting units, and the second positive electrode port is connected to the control chip, so that the power supply of the plurality of light-emitting units and the power supply of the control chip are independently separated. By setting an independent first positive electrode port and a second positive electrode port, electric energy is input into the light-emitting unit and the control chip respectively, on the one hand, electromagnetic interference or fault isolation between the control chip and the plurality of light-emitting units can be avoided, the power supply of the light-emitting module and the light display can be maintained normally, and the stability and reliability of the lamp when working can be improved; on the other hand, single-point control can be realized, that is, the output values ​​of the current and voltage of the light-emitting unit and the control chip can be independently controlled, so as to form different lighting effects and improve the working efficiency of the lamp. In addition, the independent first positive electrode port and the second positive electrode port can also prevent heat from being transmitted to each other, and avoid the heat of the light-emitting unit from being directly transmitted to the control chip, thereby improving the safety and service life of the lamp. At the same time, it facilitates maintenance and management, reduces the complexity and difficulty of maintenance, and thus improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the implementation manner will be briefly introduced below. Obviously, the drawings described below are only some implementation manners of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0008] Figure 1 It is a structural schematic diagram of a light-emitting module provided in an embodiment of the present application.

[0009] Figure 2 This is another structural schematic diagram of a light-emitting module provided in an embodiment of the present application.

[0010] Figure 3 yes Figure 2 The circuit structure diagram of the light-emitting module shown.

[0011] Figure 4 yes Figure 3 A schematic diagram of the series connection of multiple light-emitting units in the light-emitting module shown.

[0012] Figure 5 yes Figure 3 A schematic diagram of parallel connection of multiple light-emitting units in the light-emitting module is shown.

[0013] Figure 6 yes Figure 3 A top view of the base plate in the light-emitting module.

[0014] Figure 7 yes Figure 3 Another top view of the base plate in the light-emitting module.

[0015] Figure 8 yes Figure 3 Another top view of the base plate in the light-emitting module.

[0016] Fig. 9 It is a structural schematic diagram of a lamp provided in an embodiment of the present application.

[0017] Fig.10 It is a schematic diagram of the structure of another lamp provided in an embodiment of the present application.

[0018] Fig.11 yes Fig.10 Circuit diagram of the lamp shown.

[0019] Fig.12 It is a schematic diagram of the structure of the step-down circuit provided in the embodiment of the present application.

[0020] Fig.13 yes Fig.11 The circuit structure diagram of the control signal line in the lamp shown is connected in parallel to multiple light-emitting modules.

[0021] Fig.14 yes Fig.11 The circuit structure diagram of the control signal line in the lamp shown is connected in series to multiple light-emitting modules. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] It should be noted that when an element / component is referred to as being "fixed to" another element / component, it may be directly on the other element / component or there may be an intermediate element / component. When an element / component is considered to be "connected" to another element / component, it may be directly connected to the other element / component or there may be an intermediate element / component at the same time; at the same time, when an element / component is considered to be "connected" to another element / component, it may be integrally formed or assembled with the other element / component. When an element / component is considered to be "set on" another element / component, it may be directly set on the other element / component or there may be an intermediate element / component at the same time.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0025] See also Figures 1 to 3 The embodiment of the present application provides a light-emitting module 100, which includes a packaging shell 10, a plurality of light-emitting units 20 and a control chip 30. Among them, a plurality of metal ports are also provided on the packaging shell 10 for connecting to an external circuit. The light-emitting module 100 can be used in various lighting scenarios, such as home lighting, commercial lighting, traffic lights, decorative lighting, etc., depending on the plurality of light-emitting units 20 carried. In the present embodiment, the plurality of light-emitting units 20 can all be LED lamp beads, and the LED lamp beads have the properties of high energy efficiency, long life, fast response, dimmable light, rich colors, etc. It should be noted that the light-emitting unit 20 can also be a light bulb, a fluorescent tube, an optical fiber, etc., which is not limited in the present embodiment.

[0026] Specifically, in the embodiment of the present application, a plurality of light-emitting units 20 and a control chip 30 are arranged in the package shell 10, and the plurality of light-emitting units 20 are electrically connected to each other. The control chip 30 is electrically connected to the plurality of light-emitting units 20 to control the operation of the plurality of light-emitting units 20. The package shell 10 is provided with a first positive electrode port 11, a second positive electrode port 12, a negative electrode port 14 and a control signal port 13 which are arranged at intervals from each other. The plurality of light-emitting units 20 are connected between the first positive electrode port 11 and the negative electrode port 14, and the first positive electrode port 11 is electrically connected to the positive electrode of the power module 50 to supply power to the plurality of light-emitting units 20. The control chip 30 is connected in series between the second positive electrode port 12 and the negative electrode port 14, and the second positive electrode port 12 is electrically connected to the positive electrode of the power module 50 to supply power to the control chip 30, and the control signal port 13 is electrically connected to the control chip 30. Among them, the plurality of light-emitting units 20 can improve the brightness of the light-emitting module 100. By setting the first positive electrode port 11, the second positive electrode port 12 and the control signal port 13 spaced apart from each other on the packaging shell 10 of the light-emitting module 100, the first positive electrode port 11 is connected to the plurality of light-emitting units 20, and the second positive electrode port 12 is connected to the control chip 30, so that the power supply of the plurality of light-emitting units 20 and the power supply of the control chip 30 are independently separated. By setting the independent first positive electrode port 11 and the second positive electrode port 12, the electric energy is input into the light-emitting unit 20 and the control chip 30 respectively, on the one hand, it can avoid electromagnetic interference or fault isolation between the control chip 30 and the plurality of light-emitting units 20, maintain the normal power supply and light display of the light-emitting module 100, and improve the stability and reliability of the lamp 200 when working; on the other hand, it can also realize single-point control, that is, it can independently control the output values ​​of the current and voltage of the light-emitting unit 20 and the control chip 30, so as to form different lighting effects and improve the working efficiency of the lamp 200. In addition, the independent first positive terminal 11 and the second positive terminal 12 can also prevent heat from being transferred to each other, and avoid the heat of the light-emitting unit 20 being directly transferred to the control chip 30, thereby improving the safety and service life of the lamp 200. At the same time, it is also convenient for maintenance and management, reducing the complexity and difficulty of maintenance, thereby improving the user experience.

[0027] Next, each component of the light-emitting module 100 and the specific structure of each component will be introduced one by one.

[0028] See also Figures 1 to 3In this embodiment, the packaging shell 10 is used to form a physical barrier and encapsulate the installation components to prevent external factors such as impact, humidity, dust, etc. from damaging the installation 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 together defines a receiving space 161. The installation components are arranged in the receiving space 161. The installation components can be components such as the light-emitting unit 20, the control chip 30, and the heat sink, which are not limited in this embodiment.

[0029] In the present embodiment, the base plate 15 is roughly in the shape of a flat plate, which is used to provide physical support for the mounting components and play a role in heat conduction and electrical connection. In other embodiments, the base plate 15 may also be in the shape of a circular plate, or other shapes, which is not specifically limited in the present embodiment. The base plate 15 may be an insulating substrate, which has the functions of insulation and heat conduction. As an example, the base plate 15 may include an aluminum nitride ceramic substrate, or may include other insulating materials such as a plastic board and a fiberglass board. It should be noted that the base plate 15 may also be a high thermal conductivity substrate such as a metal substrate, a silicon material substrate, etc., which is not limited in the present embodiment.

[0030] In this embodiment, the light-transmitting cover 16 is used to improve the uniformity of the emitted 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), and the opening is connected to the accommodating space 161. The light-transmitting cover 16 is detachably connected to the bottom plate 15, which is not convenient for maintenance and management. The material of the light-transmitting cover 16 can include ABS plastic, PC plastic or other hard plastics, which can not only reduce the weight of the light-transmitting cover 16 to achieve lightweight, but also enable the light-transmitting cover 16 to have a certain stability, thereby effectively protecting the installation components. On the other hand, the plastic material has the characteristics of low cost, good plasticity, easy processing, and not easy to break, which can reduce the production cost of the light-transmitting cover 16 and thus reduce the production cost of the lamp 200. It should be noted that the material of the light-transmitting cover 16 can also be a light-transmitting material such as light-transmitting glass and silicone. The outer contour of the light-transmitting cover 16 can be cylindrical, cubic, spherical, etc., and this embodiment does not limit this.

[0031] See also Figure 3 and Figure 4In this embodiment, a plurality of light-emitting units 20 are arranged in the accommodating space 161, and the plurality of light-emitting units 20 are used to form lighting light or decorative light. In order to form a variety of lighting effects, at least two of the plurality of light-emitting units 20 have different colors, that is, the light-emitting module 100 can form at least two colors of outgoing light. Specifically, the light-emitting unit 20 may include one or more light-emitting elements, such as the LED lamp beads, light bulbs, fluorescent tubes, optical fibers, etc. mentioned above, which are not limited in this embodiment. As an example, the light-emitting unit 20 includes LED lamp beads, and the colors and output powers of the lamp beads of the plurality of light-emitting units 20 may be different, and outgoing light of different colors can be formed, thereby forming a variety of lighting effects and improving the user's visual experience. Multiple light-emitting units 20 can be connected in series or in parallel. Specifically, as an example, multiple light-emitting units 20 are connected in series between the first positive port 11 and the negative port 14 in sequence, thereby increasing the luminous brightness of the light-emitting module 100 and enabling the entire light-emitting module 100 to adapt to a higher input voltage. For example, if the operating voltage of a single light-emitting unit 20 is 3V, then connecting three in series can adapt to an input voltage of 9V, thereby meeting the brightness and voltage requirements of different usage scenarios.

[0032] See also Figure 5 As another example, multiple light-emitting units 20 are connected in parallel between the first positive terminal 11 and the negative terminal 14, which can improve the overall brightness of the light-emitting module 100. At the same time, when a light-emitting unit 20 fails, the other light-emitting units 20 can work normally, which can improve the working reliability of the light-emitting module 100. Furthermore, since the current is distributed to multiple light-emitting units 20, the heat load of a single light-emitting unit 20 is reduced, which helps to improve the service life of the light-emitting unit 20.

[0033] In this embodiment, the control chip 30 is arranged on the bottom plate 15 and is spaced apart from the light-emitting unit 20. On the one hand, it is convenient for the conductive wiring and the installation and maintenance of the control chip 30 and the light-emitting unit 20; on the other hand, it can reduce the concentration of heat, help the heat dissipation of the control chip 30 and the light-emitting unit 20, and extend the service life of the control chip 30 and the light-emitting unit 20. At the same time, it can also 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 plurality of light-emitting units 20, and is used to control the brightness, color, flicker and other working characteristics of the plurality of light-emitting units 20. Specifically, the control chip 30 is an LED chip integrated circuit, and a program with an address code is pre-written into the control chip 30, so that the light-emitting unit 20 emits light when it receives the corresponding control signal.

[0034] See also Figure 6 and Figure 7In this embodiment, the package shell 10 is provided with a first positive electrode port 11, a second positive electrode port 12, a negative electrode port 14 and a control signal port 13 which are spaced apart from each other. The first positive electrode port 11, the second positive electrode port 12, the negative electrode port 14 and the control signal port 13 can be provided on the bottom plate 15. The first positive electrode port 11, the second positive electrode port 12, the negative electrode port 14 and the control signal port 13 can be connection pads, and the connection wire 60 passes through a plurality of connection pads to connect with a plurality of light-emitting units 20 and the control chip 30. Specifically, the bottom plate 15 has a first side 151 and a second side 152 which are opposite to each other. The first positive electrode port 11 can be connected to a plurality of light-emitting units 20 and the positive electrode of the power module 50 through the connection wire 60, and supply power to the plurality of light-emitting units 20. The connecting wire 60 is arranged inside the light-emitting module 100, and is used to connect the plurality of light-emitting units 20 to the first positive electrode port 11 and the negative electrode port 14, and is also used to connect the control chip 30 to the second positive electrode port 12 and the control signal port 13 to the negative electrode port 14 respectively. The surface of the connecting wire 60 is covered with an insulating layer (not shown in the figure) to prevent electrical short circuit. In some other examples, the first positive electrode port 11, the second positive electrode port 12, the negative electrode port 14 and the control signal port 13 can be implemented by metal inserts, metal pins or metal patches in addition to the pad structure.

[0035] In this embodiment, the first positive electrode port 11 is arranged on the side wall of the bottom plate 15, and the first positive electrode port 11 can extend from the first side 151 to the second side 152. The two ends of the first positive electrode port 11 can be electrically connected through metal wires, metal patches and other structures, so that the arrangement of the metal wires is relatively regular. The second positive electrode port 12 is arranged at intervals from the first positive electrode port 11, and is used to connect the control chip 30 and the positive electrode of the power module 50 to supply power to the control chip 30. Similarly, the second positive electrode port 12 can also be extended from the first side 151 to the second side 152.

[0036] See also Figure 8In other embodiments, in order to facilitate the installation of the light-emitting unit 20 and the control chip 30, the first positive port 11 and the second positive port 12 can also be disconnected. Specifically, the first positive port 11 includes a first sub-port 111 and a second sub-port 112, and the first sub-port 111 and the second sub-port 112 are arranged at intervals. The connecting wire 60 connects the first sub-port 111 and the second sub-port 112, and the multiple light-emitting modules 100 are electrically connected between the first sub-port 111 and the second sub-port 112. The first sub-port 111 can be electrically connected to the positive electrode of the power module 50 to supply power to the multiple light-emitting units 20, and the second sub-port 112 can be electrically connected to the negative port 14, so that the current flows from the first sub-port 111 into the multiple light-emitting units 20 and then flows to the negative port 14 through the second sub-port 112 to form a closed loop. Similarly, the second positive electrode port 12 may include a third sub-port 121 and a fourth sub-port 122. The connecting wire 60 conducts the third sub-port 121 and the fourth sub-port 122, and the control chip 30 is electrically connected between the third sub-port 121 and the fourth sub-port 122. The third sub-port 121 is electrically connected to the positive electrode of the power module 50 to supply power to the control chip 30, and the fourth sub-port 122 is electrically connected to the negative electrode port 14, so that the current flows from the third sub-port 121 to the control chip 30 and then flows to the negative electrode port 14 through the fourth sub-port 122, forming a closed loop.

[0037] It should be noted that the first positive electrode port 11 and the second positive electrode port 12 can also be arranged inside the accommodation space 161. By setting the first positive electrode port 11 and the second positive electrode port 12 at intervals, the power supply of the light-emitting unit 20 and the power supply of the control chip 30 can be separated independently. On the one hand, it can avoid electromagnetic interference or fault isolation between the control chip 30 and the light-emitting unit 20, maintain the normal power supply of the light-emitting module 100 and the normal light display, and improve the stability and reliability of the lamp 200 when working; on the other hand, it can also achieve single-point control, that is, it can independently control the output values ​​of the current and voltage of the light-emitting unit 20 and the control chip 30, so as to form different lighting effects and improve the working efficiency of the lamp 200. In addition, the independent first positive electrode port 11 and the second positive electrode port 12 can also prevent heat transfer, avoid the heat of the light-emitting unit 20 directly transmitted to the control chip 30, thereby improving the safety and service life of the lamp 200. At the same time, the setting is also convenient for maintenance and management, reduces the complexity and difficulty of maintenance, and thus improves the user experience.

[0038] Please refer again Figures 6 to 8In this embodiment, the negative electrode port 14 and the first positive electrode port 11 and the second positive electrode port 12 are spaced apart on the bottom plate 15. The negative electrode port 14 can be electrically connected to the plurality of light-emitting units 20 and the control chip 30 through a metal wire, and connected to the negative electrode of the power module 50, so that the light-emitting module 100 and the power module 50 form a closed loop.

[0039] See also Figure 6 and 7 As an example, the negative electrode port 14 can be disposed on the side wall of the bottom plate 15 and extend from the first side 151 to the second side 152. As another example, the negative electrode port 14 can also be disconnected to facilitate wiring. Figure 7 Specifically, the negative electrode port 14 includes a fifth sub-port 141 and a sixth sub-port 142, the fifth sub-port 141 and the sixth sub-port 142 are arranged at intervals, and the connecting wire 60 is connected between the fifth sub-port 141 and the sixth sub-port 142 to conduct the fifth sub-port 141 and the sixth sub-port 142. The fifth sub-port 141 can be connected to the negative electrode of the power module 50, and the sixth sub-port 142 can be electrically connected to the plurality of light-emitting units 20 or the control chip 30, so that the light-emitting module 100 and the power module 50 form a closed loop.

[0040] See also Figure 7 In this embodiment, the control signal port 13 can be set on the side wall of the base plate 15 and extend from the first side to the second side. The control signal port 13 is electrically connected to the control chip 30 to transmit the control signal to the control chip 30.

[0041] See also Figure 6 and Figure 8 In other embodiments, the control signal ports 13 are disconnected from each other to form a control signal input terminal 131 and a control signal output terminal 132. The control signal input terminal 131 is disposed on the first side 151, and the control signal output terminal 132 is disposed on the second side 152. The control signal input terminal 131 and the control signal output terminal 132 are connected by a connecting wire 60, and the control chip 30 can obtain a control signal from the connecting wire 60. As an example, the control chip 30 is electrically connected to the connecting wire 60, so that the control chip 30 can receive the control signal or control information transmitted on the connecting wire 60. Please refer to Figure 7 As another example, the control chip 30 can also be set between the control signal input terminal 131 and the control signal output terminal 132, so that the control signal is transmitted to the control chip 30 via the control signal input terminal 131 and then output from the control signal output terminal 132, specifically, it can be output to the control chip 30 of the adjacent light-emitting module 100.

[0042] See also Figures 9 to 11In this embodiment, a lamp 200 having a light-emitting module 100 is also provided. The lamp 200 may be a light strip or a light string, and is used to emit light of corresponding colors according to a control signal to provide lighting, indication and reminder effects. For example, white light, red light, blue light, green light or other mixed color lights are emitted. The lamp 200 includes the light-emitting module 100 mentioned above, a controller 40 and a power module 50. Specifically, the controller 40 is electrically connected to the control signal port 13, and is responsible for receiving user instructions and adjusting the working state of the lamp 200. The controller 40 may be an integrated microcontroller or a dedicated integrated circuit to realize functions such as brightness adjustment, color change, scene mode setting, timer switch and communication with a smart home system. The controller 40 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 module 50 is used to convert an external power source (such as AC power or a battery) into the 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 module 50 is connected to the first positive terminal 11 and the second positive terminal 12 , and the negative electrode of the power source can be connected to the negative terminal 14 , so that the light-emitting module 100 and the power module 50 form a closed loop.

[0043] Specifically, the light emitting module 100 further includes a step-down circuit 51, which is used to convert a higher input voltage into a lower output voltage to meet the voltage requirements of different parts of the electronic device or circuit. In this embodiment, the step-down circuit 51 can be connected to the light emitting unit 20 and / or the control chip 30. As an example, the step-down circuit 51 has an input terminal 5101 and two output terminals 5102, the input terminal 5101 is connected to the positive pole of the power module 50 to receive AC power, and the two output terminals 5102 can be respectively connected to the first positive pole port 11 and the second positive pole port 12 to rectify the input voltage of the power module 50 to the light emitting unit 20 and the operating voltage of the control chip 30. In this embodiment, the number of the step-down circuit 51 is two, one of which is connected between the positive pole of the power module 50 and the first positive pole port 11 to provide voltage for the light emitting unit 20, and the other step-down circuit 51 is connected between the positive pole of the power module 50 and the second positive pole port 12 to provide voltage for the control chip 30. Specifically, the output end 5102 of the step-down circuit 51 is connected to the first positive terminal 11 or the second positive terminal 12 of the light-emitting module 100 through a metal wire. By setting the step-down circuit 51, the high voltage can be converted into a working voltage suitable for the light-emitting unit 20 and the control chip 30, so as to ensure that the light-emitting unit 20 and the control chip 30 can operate safely, efficiently and reliably.

[0044] See also Fig.12As an example, the buck circuit 51 may include a buck chip 513 , a voltage divider module 512 , and a feedback module 516 , and the voltage divider module 512 and the feedback module 516 are respectively connected to the buck chip 514 .

[0045] In this embodiment, the buck chip 513 is used to convert a higher input voltage into a lower output voltage for use by other components in the circuit. The buck chip 513 is provided with an input pin VIN, an enable pin EN, a soft start pin SS, a pad pin EPAD, a bootstrap pin BST, an output pin LX, a feedback pin FB, and a supply voltage pin VCC.

[0046] Specifically, the input pin VIN is connected to the positive pole of the power module 50 to receive the power supply voltage. The power supply voltage can be the output voltage of a DC power supply, a battery or other power converter. The enable pin EN is used to control the working state of the buck chip 513. Specifically, when the enable pin EN receives a high level signal, the buck chip 513 starts working and outputs a low level signal; when the enable pin EN receives a low level signal, the buck chip 513 stops working and outputs a high level signal. The enable pin EN is connected to the voltage divider module 512, and the input power supply voltage is divided by the voltage divider module 512 to simultaneously meet the withstand voltage value of the enable pin EN and the threshold value for enabling the buck chip 513 to work. The slow start pin SS is used to smoothly start the buck chip 513 to reduce the current impact at startup, to protect the circuit and improve the reliability of the power supply. The pad pin EPAD is an exposed pad, which serves as a connection point for the internal grounding of the buck chip 513, and connects the ground wire inside the buck chip 513 to the ground plane. The bootstrap pin BST is connected to the voltage regulator module 514 to allow the MOSFET (metal oxide semiconductor field effect transistor) on the high side to obtain sufficient driving voltage when it needs to be turned on, and the MOSFET can be turned on even when the input voltage is low. The output pin LX is connected to the output terminal 5102 to provide voltage to the light-emitting unit 20 or the control chip 30. The feedback pin FB is connected to the feedback module 516, and the feedback pin FB is used to feed back a part of the voltage output to the light-emitting unit 20 or the control chip 30 to the inside of the buck chip 513 for comparison with the internal reference voltage, thereby achieving stable control of the output voltage. One end of the power supply voltage pin VCC is grounded, and the power supply voltage pin VCC is used to provide voltage to the MOSFET inside the buck chip 513.

[0047] In the present embodiment, the voltage divider module 512 is connected in series between the input terminal 5101 and the enable pin EN, and is used to divide the input voltage to the output voltage. The voltage divider module 512 may include a first resistor R1 and a second resistor R2, the first resistor R1 is connected in series between the input terminal 5101 and the enable pin EN, one end of the second resistor R2 is connected to the connection node of the enable pin EN and the first resistor R1, and the other end is grounded. By setting the first resistor R1 and the second resistor R2, the input power supply voltage is divided to a suitable value so that it does not exceed the withstand voltage value of the enable pin EN, and the voltage value is guaranteed to meet the threshold of the enable operation of the buck circuit 51. The voltage divider module 512 may also include a first capacitor C5, one end of the first capacitor C5 is connected to the connection node of the enable pin EN and the first resistor R1, and the other end is grounded. At the moment of power-on, the first capacitor C5 uses its charging effect to slowly raise the voltage of the enable pin EN, thereby protecting the buck chip 513 to a certain extent.

[0048] One end of the feedback module 516 is connected between the output pin LX and the output terminal 5102, and the other end is connected to the feedback pin FB. The feedback module 516 is used to feed back a part of the output voltage to the feedback pin FB of the buck chip 513, and compare it with the internal reference voltage, so as to form a closed-loop control system. The feedback module 516 includes a third resistor R5 and a fourth resistor R6, one end of the third resistor R5 is connected between the output terminal 5102 and the output pin LX, and the other end is grounded through the fourth resistor R6. Therefore, after the third resistor R5 and the fourth resistor R6 are connected in series, one end is connected to the output terminal 5102 and the other end is grounded. The values ​​of the third resistor R5 and the fourth resistor R6 can be adjusted according to the output voltage value. In some embodiments, the feedback module 516 can also include a second capacitor C14, one end of the second capacitor C14 is connected to the output terminal 5102, and the other end is connected to the feedback pin FB, and the other end of the second capacitor C14 is also connected to the connection node of the third resistor R5 and the fourth resistor R6, so that the second capacitor C14 can improve the dynamic response performance of the buck circuit 51.

[0049] In some embodiments, the buck circuit 51 further includes an anti-backflow module 517, which is connected between the output pin LX and the output terminal 5102 and electrically connected to the feedback module 516. The anti-backflow module 517 is used to prevent the voltage from reversely entering the input terminal 5101 of the buck circuit 51, thereby preventing the buck chip 513 from being damaged. The anti-backflow module 517 may include two Schottky diodes connected in parallel to each other, which can not only prevent the voltage from flowing in reverse due to their low forward voltage drop and fast response characteristics, but also conduct when the abnormal voltage or high harmonics exceed their breakdown voltage to protect the circuit.

[0050] In some embodiments, the step-down circuit 51 further includes a voltage stabilizing module 514, one end of which is connected to the bootstrap pin BST, and the other end is grounded. The voltage stabilizing module 514 is used to provide a stable operating voltage, save energy and prevent power surges. The voltage stabilizing module 514 includes at least two absorption circuit submodules 5141, and at least two absorption circuit submodules 5141 are sequentially connected in series between the bootstrap pin BST and the ground node. Each absorption circuit submodule includes a third capacitor R3 and a fifth resistor C8 connected in series with each other. By setting the absorption circuit submodule, the EMI performance of the entire step-down circuit 51 can be improved.

[0051] In some embodiments, the buck circuit 51 further includes a power inductor L1, which is connected between the output pin LX and a node between the reverse inflow module 517 and the output terminal 5102. The power inductor L1 is used for storing and releasing energy, thereby improving the stability of the buck circuit 51.

[0052] In some embodiments, the step-down circuit 51 also includes an input capacitor module 511 and an output capacitor module 515. The input capacitor module 511 is connected to the positive electrode of the power module 50 and the input pin VIN. The input capacitor module 511 may include multiple capacitors connected in parallel to each other, such as C1, C2, C3, and C4. One end of each capacitor is electrically connected to the connection node between the input terminal 5101 and the input pin VIN, and the other end is grounded. The output capacitor module 515 is electrically connected between the output pin LX and the output terminal 5102. The output capacitor module 515 may include multiple capacitors connected in parallel to each other, such as C10, C11, C12, and C13. One end of each capacitor is electrically connected between the output pin LX and the output terminal 5102, and the other end is grounded. The capacitor can be a ceramic capacitor or an electrolytic capacitor. Capacitors with different withstand voltage values ​​can be selected according to actual needs. By setting the above-mentioned step-down circuit 51, the effect of simple circuit and arbitrary voltage switching can be achieved.

[0053] It should be noted that, in addition to the above-mentioned SMD package, the package 10 of the light-emitting module 100 can also be a pin package. Figure 1As an example, the outer contour of the package shell 10 can be cylindrical, and the package shell 10 has four metal pins 17, namely a first positive pin 171, a second positive pin 172, a control signal pin 173, and a negative pin 174. The first positive pin 171 can correspond to the first positive port 11 mentioned above, the second positive pin 172 can correspond to the second positive port 12 mentioned above, the control signal pin 173 can correspond to the control signal port 13 mentioned above, and the negative pin 174 can correspond to the negative port 14 mentioned above. The first positive pin 171 is electrically connected to the positive electrode of the power module 50 and the plurality of light-emitting units 20, the second positive pin 172 is electrically connected to the positive electrode of the power module 50 and the control chip 30, the control signal pin 173 is electrically connected to the control chip 30, and the negative pin 174 is electrically connected to the negative electrode of the power module 50, the plurality of light-emitting units 20, and the control chip 30, respectively.

[0054] Please refer again Fig.11 In this embodiment, the connecting wire 60 can also be arranged between the light-emitting module 100 and the power module 50, or between adjacent light-emitting units 20. Specifically, the surface of the connecting wire 60 is covered with an insulating layer (not shown in the figure) to prevent electrical short circuits and electric shock accidents. The connecting wire 60 may include a first positive power line 61, a second positive power line 62, a control signal line 63 and a negative power line 64. The first positive power line 61 is connected between the positive electrode of the power module 50 and the first positive electrode port 11, the second positive power line 62 is connected between the positive electrode of the power module 50 and the second positive electrode port 12, the control signal line 63 is connected between the controller 40 and the control signal port 13, and the negative power line 64 can be connected between the negative electrode of the power module 50 and the negative electrode port 14, thereby forming a four-wire lamp.

[0055] In some embodiments, the number of the light-emitting modules 100 may be multiple, and the multiple light-emitting modules 100 are arranged on the connecting wire 60 at intervals from each other. As an example, the multiple light-emitting modules 100 are arranged in an array and are connected in series on the connecting wire 60 in sequence. Specifically, the multiple light-emitting modules 100 are sequentially arranged in a linear array, which may be a single row of long strips or multiple rows of long strips, and this embodiment does not limit this. As another example, the multiple light-emitting modules 100 are sequentially arranged in an annular array, which may be a circular array, a radial array or a rectangular array, and this 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 annular array mentioned above, but can also be arranged in the form of a curve array, a matrix array, etc. By setting different array arrangements and the number of arrays, a specific lighting effect or decorative effect can be formed, and the brightness and uniformity of the light distribution in the lighting area or the decorative area can be improved, thereby improving the user's visual experience.

[0056] In the embodiment of the present application, the control signal line 63 may be connected in parallel between the plurality of light-emitting modules 100 or may be connected in series between the plurality of light-emitting modules 100 , and this embodiment does not impose any limitation on this.

[0057] As an example, see Fig.13 , multiple light-emitting modules 100 are connected in parallel to the control signal line 63, that is, each light-emitting module 100 can be connected to the control signal line 63 through an independent metal wire, so that the control signal port 13 of each light-emitting module 100 is connected to the controller 40 via the control signal line 63, so that the controller 40 can synchronously transmit the control signal to all light-emitting modules 100, which can reduce signal delay. At the same time, when the control chip 30 in one light-emitting module 100 fails to receive the signal, the control chips 30 of other light-emitting modules 100 can normally receive the control signal to ensure the normal operation of the lamp 200. The setting of the corresponding control signal port 13 can be extended from the first side 151 of the bottom plate 15 to the second side 152 as mentioned in the above embodiment, or disconnected between the control signal ports 13, so that the control signal line 63 can be simultaneously arranged in the control signal ports 13 of multiple light-emitting modules 100, and the control chip 30 in each light-emitting module 100 is connected to the control signal line 63 through a metal wire.

[0058] See also Fig.14 As another example, the control signal line 63 is connected in series to a plurality of light-emitting modules 100. The control signal port 13 of each light-emitting module 100 includes a control signal input port 131 and a control signal output port 132, and the control chip 30 is connected between the control signal input port 131 and the control signal output port 132. The control signal line 63 is sequentially connected to the control signal input port 131, the control chip 30, and the control signal output port 132 of each light-emitting module 100. The control signal output port 132 of the light-emitting module 100 is also connected to the control signal input port 131 of the adjacent light-emitting module 100 through the control signal line 63, so that a plurality of control signals are transmitted step by step between the plurality of light-emitting modules 100.

[0059] Please refer again Fig.10In this embodiment, the number and color of the light-emitting units 20 of each light-emitting module 100 may be different, thereby forming a variety of lighting effects or decorative light effects. The lamp 200 may also include a lamp board 201. The lamp board 201 may be a circuit board or a dielectric substrate. The connecting wire 60 may be an independent metal wire or a conductive trace integrated on the lamp board 201. This embodiment does not limit this. A plurality of metal pads 2011 are also provided on the lamp board 201. The metal pads 2011 are used to install the light-emitting module 100. Specifically, the metal pads 2011 may be connected and fixed to the first positive electrode port 11, the second positive electrode port 12, the control signal port 13, and the negative electrode port 14.

[0060] In other embodiments, the metal pad 2011 can also be connected to the light-emitting module 100 through a metal wire. Multiple metal pads 2011 are connected to multiple light-emitting modules 100 in a one-to-one correspondence. At the same time, the controller 40 can output multiple control signals. Multiple control signals and multiple light-emitting modules 100 are set in a one-to-one correspondence, which can achieve 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. The control chip 30 in the light-emitting module 100 can receive the color display signal from the controller 40. 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 indication color in the control signal received by the control chip 30 of the multiple light-emitting modules 100 can be the same or different, so as to form a variety of lighting effects or decorative effects.

[0061] Specifically, each light-emitting module 100 is arranged on the metal pad 2011 in a preset order, and 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 40 sends an operation instruction containing address code information to the control chip 30 in each light-emitting module 100 through the control signal line 63, and the control chip 30 obtains the instruction information matching the address code, thereby realizing single-point control of the lamp 200. On the one hand, it can avoid the situation where the light-emitting modules 100 are damaged at the same time, ensuring the light-emitting reliability and stability of the lamp 200; on the other hand, it can achieve a variety of lighting or decorative effects, improving the user experience.

[0062] As an example, the specific address code can be input by pre-writing the address code into the light-emitting unit 20 in the light-emitting module 100 through a burner, and then soldering the light-emitting module 100 with the address code written therein to the corresponding metal pad 2011 in the address sequence. As another example, the light-emitting module 100 can be soldered to the metal pad 2011 in sequence, and then the specific address code can be written after scanning each light-emitting unit 20 through a burner.

[0063] It should be noted that when each light-emitting module 100 includes multiple light-emitting units 20, the address codes of each light-emitting unit 20 may be the same or different, and this embodiment does not limit this. It is understandable that the more address codes corresponding to the light-emitting units 20 in each light-emitting module 100, the richer the lighting effect or decorative light effect formed.

[0064] In summary, the embodiment of the present application provides a light-emitting module 100, by providing a first positive electrode port 11, a second positive electrode port 12 and a control signal port 13 spaced apart from each other on the packaging shell 10 of the light-emitting module 100, the first positive electrode port 11 is connected to the light-emitting unit 20, and the second positive electrode port 12 is connected to the control chip 30, so that the power supply of the light-emitting unit 20 and the power supply of the control chip 30 are independently separated. By providing the independent first positive electrode port 11 and the second positive electrode port 12, on the one hand, it is possible to avoid electromagnetic interference or fault isolation between the control chip 30 and the light-emitting unit 20, maintain the normal power supply and light display of the light-emitting module 100, and improve the stability and reliability of the lamp 200 when working; on the other hand, it is also possible to achieve single-point control, that is, the output values ​​of the current and voltage of the light-emitting unit 20 and the control chip 30 can be independently controlled, so as to form different lighting effects and improve the working efficiency of the lamp 200. In addition, the independent first positive electrode port 11 and the second positive electrode port 12 can also prevent heat transfer, and avoid the heat of the light-emitting unit 20 from being directly transferred to the control chip 30, thereby improving the safety and service life of the lamp 200. At the same time, the setting is also convenient for maintenance and management, reducing the complexity and difficulty of maintenance, thereby improving the user experience.

[0065] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. 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 this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0066] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, 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: A packaging shell, wherein the packaging shell is provided with a first positive electrode port, a second positive electrode port, a negative electrode port and a control signal port which are spaced apart from each other; A plurality of light-emitting units, wherein the plurality of light-emitting units are arranged in the packaging shell, and the plurality of light-emitting units are connected in series between the first positive electrode port and the negative electrode port or the plurality of light-emitting units are connected in parallel between the first positive electrode port and the negative electrode port; as well as A control chip, wherein the control chip is disposed in the packaging shell and is electrically connected to the plurality of light-emitting units to control the operation of the plurality of light-emitting units; The plurality of light-emitting units are connected between the first positive electrode port and the negative electrode port, and the first positive electrode port is used to electrically connect to the positive electrode of an external power module to supply power to the plurality of light-emitting units; The control chip is connected in series between the second positive port and the negative port, and the second positive port is used to be electrically connected to the positive electrode of the power module to supply power to the control chip; The control signal port is electrically connected to the control chip.

2. The light emitting module according to claim 1, characterized in that: At least two of the plurality of light emitting units have different colors.

3. The light emitting module according to claim 1, characterized in that: The packaging shell includes a bottom plate and a light-transmitting cover, wherein the light-transmitting cover covers the bottom plate to jointly define a containing space, and a plurality of the light-emitting units and the control chip are arranged in the containing space.

4. The light emitting module according to claim 3, characterized in that: The base plate has a first side and a second side opposite to each other, the control signal port includes a control signal input terminal and a control signal output terminal, the control signal input terminal is arranged on the first side, the control signal output terminal is arranged on the second side, and the control chip is connected between the control signal input terminal and the control signal output terminal.

5. The light emitting module according to claim 3, characterized in that: The bottom plate has a first side and a second side opposite to each other. The control signal port is extended from the first side to the second side. The control chip is connected to the control signal port.

6. The light emitting module as claimed in claim 4 or 5, characterized in that: The first positive port includes a first sub-port and a second sub-port, the second positive port includes a third sub-port and a fourth sub-port, the negative port includes a fifth sub-port and a sixth sub-port, the first sub-port, the third sub-port, and the fifth sub-port are spaced apart from each other on the first side, the second sub-port, the fourth sub-port, and the sixth sub-port are spaced apart from each other on the second side, the first sub-port is electrically connected to the second sub-port, the third sub-port is electrically connected to the fourth sub-port, and the fifth sub-port is electrically connected to the sixth sub-port; or, The first positive electrode port extends from the first side to the second side, the second positive electrode port extends from the first side to the second side, and the negative electrode port extends from the first side to the second side.

7. A lamp, characterized in that: include: The light-emitting module according to any one of claims 1 to 6; as well as A controller and a power module, wherein the controller is electrically connected to the control signal port; the first positive port and the second positive port are respectively connected to the positive pole of the power module, and the negative port is connected to the negative pole of the power module.

8. The lamp according to claim 7, characterized in that The lamp also includes a plurality of connecting wires, including a first positive power line, a second positive power line, a control signal line and a negative power line; the first positive power line is connected between the positive pole of the power module and the first positive port, the second positive power line is connected between the positive pole of the power module and the second positive port, the control signal line is connected between the controller and the control signal port, and the negative power line is connected between the negative pole of the power module and the negative port.

9. The lamp according to claim 8, characterized in that There are multiple light-emitting modules, which are arranged in a spaced relationship from each other, and each connecting wire is connected between adjacent light-emitting modules.

10. The lamp according to claim 9, characterized in that The control signal port of each light-emitting module includes a control signal input port and a control signal output port, and the control signal output port of any one of the plurality of light-emitting modules is electrically connected to the control signal input port of an adjacent light-emitting module through the control signal line.

11. The lamp according to claim 9, characterized in that A plurality of the light-emitting modules are connected in parallel to the control signal line, and the control signal port of each light-emitting module is electrically connected to the controller via the control signal line.

12. The lamp according to claim 7, characterized in that The light-emitting module further includes a step-down circuit, the step-down circuit having an input end and two output ends, the input end is connected to the positive electrode of the power module, and the two output ends are respectively connected to the first positive electrode port and the second positive electrode port; or, The light-emitting module also includes two step-down circuits, each of which has an input end and an output end, the input ends of the two step-down circuits are respectively connected to the positive pole of the power supply module, and the output ends of the two step-down circuits are respectively connected to the first positive port and the second positive port.

13. The lamp according to claim 12, characterized in that The step-down circuit comprises: A step-down chip is provided with an enable pin, a feedback pin and an output pin, wherein the output pin is connected to the output end; A voltage divider module, connected in series between the input terminal and the enable pin, for dividing the input voltage into an output voltage; A feedback module has one end connected between the output pin connection and the output end, and the other end connected to the feedback pin.

14. The lamp according to claim 13, characterized in that The step-down circuit also includes an anti-backflow module, one end of which is connected to the connection node between the feedback module and the output pin, and the other end is connected to the output end; the anti-backflow module includes two Schottky diodes connected in parallel.

15. The lamp according to claim 13, characterized in that The step-down chip is also provided with a bootstrap pin, and the step-down circuit also includes a voltage stabilizing module, one end of the voltage stabilizing module is connected to the bootstrap pin, and the other end is grounded; the voltage stabilizing module includes at least two absorption circuit sub-modules, at least two of the absorption circuit sub-modules are connected in series between the bootstrap pin and the ground node in sequence, and each of the absorption circuit sub-modules includes a third capacitor and a fifth resistor connected in series.

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