Luminescent device driving system and automobile grille lamp

Abstract

The utility model provides a light-emitting device driving system and an automobile grille lamp. The light-emitting device driving system comprises a plurality of light-emitting devices arranged in an array, each light-emitting device comprises a first end and a second end, the first ends of the light-emitting devices located in the same row are connected together, and the second ends of the light-emitting devices located in the same column are connected together; the control unit is provided with a plurality of high-level output ends and a plurality of low-level output ends; the first ends of the light-emitting devices located in the same row are connected with one high-level output end of the control unit; the second ends of the light-emitting devices located in the same column are connected with one low-level output end of the control unit. According to the light-emitting device driving system, the control unit can be used for controlling the level of each output port, so that precise selection and lighting of the light-emitting device are realized.

Description

Technical Field

[0001] The present application relates to the field of vehicle lighting technology, and in particular to a light emitting device driving system and an automobile grille light. Background Art

[0002] With the development of smart car lights and the increasingly innovative new energy vehicles, more and more new technologies are being used in external lamps. The traditional grille air intake function has begun to weaken. In some new car companies, the grille has gradually disappeared or reduced in size. Digital elements with interactive and decorative functions have been added to the grille design, and digital grilles have come into being.

[0003] In digital grilles, a large number of LEDs are used as new carriers of LOGO, design concepts, and emotional appeals, integrating shape and function. The common LED driver is to connect the LED anode to the power supply, and drive the MOS tube to turn on and off through the IO port to control the LED cathode to ground, so that the LED can work normally. This type of driver is a common method when there are fewer LED particles.

[0004] However, the digital grille requires a large amount of digital information to provide a good human-computer interaction experience. The use of traditional LED drivers will not only lead to an excessive number of drivers and high costs, but will also require a large amount of space when laid out on the PCB board later. Utility Model Content

[0005] In order to solve the above problems, the technical solutions adopted in the embodiments of the present application are as follows:

[0006] A light-emitting device driving system comprises: a plurality of light-emitting devices arranged in an array, the light-emitting devices comprising a first end and a second end, the first ends of the light-emitting devices in the same row being connected together, and the second ends of the light-emitting devices in the same column being connected together; a control unit, the control unit having a plurality of high-level output ends and a plurality of low-level output ends; wherein the first ends of the light-emitting devices in the same row are connected to one of the high-level output ends of the control unit; and the second ends of the light-emitting devices in the same column are connected to one of the low-level output ends of the control unit.

[0007] In the above-mentioned light-emitting device driving system, multiple light-emitting devices are arranged in an array, and the first ends of the light-emitting devices located in the same row are connected together and connected to a high-level output port of the control unit, and the second ends of the light-emitting devices located in the same column are connected together and connected to a low-level output port of the control unit. With this arrangement, the control unit can be used to control the level of each output port to achieve accurate selection and lighting of the light-emitting device.

[0008] As an optional implementation, in an embodiment of the utility model, the plurality of light-emitting devices arranged in an array have N rows and M columns; the control unit includes at least N high-level output terminals and at least M low-level output terminals; wherein N≥2, M≥2.

[0009] As an optional implementation manner, in an embodiment of the present utility model, the number of rows and columns of the plurality of light emitting devices arranged in an array are the same.

[0010] As an optional implementation, in an embodiment of the utility model, the light emitting device includes an LED lamp, the first end is an anode of the LED lamp, and the second end is a cathode of the LED lamp.

[0011] As an optional implementation, in the embodiment of the utility model, the control unit includes an MCU.

[0012] As an optional implementation, in an embodiment of the utility model, the control unit controls one or more of the high-level output terminals to output a high level, and controls one or more of the low-level output terminals to output a low level according to a control instruction, so as to selectively light up one or more light-emitting devices.

[0013] The present application also discloses an automobile grille lamp, comprising the light emitting device driving system in any of the above embodiments.

[0014] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of the structure of a light emitting device driving system provided in one embodiment of the present application.

[0017] Figure 2 FIG. 1 is a schematic diagram of the arrangement of light-emitting devices in an embodiment of the present application.

[0018] Figure 3 FIG. 1 is a schematic diagram of the arrangement of light-emitting devices in another embodiment of the present application.

[0019] In the figure: 100 - light emitting device driving system; 101 - MCU; 102 - light emitting device. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0022] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0023] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0024] In the description of this application, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0026] As described in the background art, the traditional LED driving circuit cannot meet the display requirements of the digital grid, which will result in an excessive number of drivers, high costs, and occupy a large amount of PCB board space.

[0027] In order to solve the above problems, the present application provides a light-emitting device driving system, which can reduce the number of drivers, reduce costs, and reduce the space occupied by the PCB board by reasonably and cleverly arranging the light-emitting devices while achieving precise control of the light-emitting units.

[0028] The following is an exemplary description of the light emitting device driving system provided by the present application:

[0029] As an alternative implementation, see Figure 1 The present application discloses a light-emitting device driving system 100, comprising: a plurality of light-emitting devices 102 arranged in an array, wherein the light-emitting devices 102 include a first end and a second end, wherein the first ends of the light-emitting devices 102 in the same row are connected in common, and the second ends of the light-emitting devices 102 in the same column are connected in common; a control unit 101, wherein the control unit 101 has a plurality of high-level output ends and a plurality of low-level output ends; wherein the first ends of the light-emitting devices 102 in the same row are connected to one of the high-level output ends of the control unit 101; and the second ends of the light-emitting devices 102 in the same column are connected to one of the low-level output ends of the control unit 101.

[0030] Specifically, Figure 1 The arrangement of the light emitting device 102 is shown in the enlarged schematic diagram as follows Figure 2 As shown, a plurality of light-emitting devices 102 are arranged in an array, and the first ends of the light-emitting devices 102 located in the same row are connected together and connected to a high-level output port of the control unit 101, and the second ends of the light-emitting devices 102 located in the same column are connected together and connected to a low-level output port of the control unit 101. With such an arrangement, the control unit 101 can be used to control the level of each output port to achieve accurate selection and lighting of the light-emitting device 102.

[0031] For example, Figure 1As shown, when the light-emitting devices 102 in the first row and the first column need to be lit, the Column1 port can be controlled to output a high level and the Row1 port can be controlled to output a low level. For the light-emitting devices 102 in the first row, the first end of each light-emitting device 102 is at a high level, but only the second end of the light-emitting devices 102 in the first column is at a low level, that is, only the light-emitting devices 102 in the first row and the first column are turned on, and thus can be lit up.

[0032] For example, Figure 1 Taking the circuit shown as an example, when the first and third rows of light-emitting devices 102 need to be lit, it is only necessary to output high levels at the Column1 port and the Column3 port, and then output low levels at the Row1-Row4 ports, so that the first and third rows of light-emitting devices 102 can be selected and lit.

[0033] In one embodiment, the plurality of light emitting devices 102 arranged in an array have N rows and M columns; the control unit 101 includes at least N high-level output terminals and at least M low-level output terminals; wherein N≥2, M≥2.

[0034] Optionally, N and M may be equal or different.

[0035] For example, when N is equal to M, the array of light emitting devices 102 is arranged in a square, and the number of high level output ports and low level output ports in the control unit 101 is equal. Figure 2 , N=4, M=4.

[0036] When N and M are not equal, the array of light emitting devices 102 is arranged in a rectangular shape. The control unit 101 can set a corresponding number of high level output ports and low level output ports according to N and M. Figure 3 , N=6, M=4.

[0037] The above-mentioned light emitting device driving system 100, due to the special design of the arrangement and connection relationship of the light emitting devices 102, only requires the control unit 101 to have M+N IO interfaces. If the traditional LED driving structure is adopted, at least M×N IO interfaces need to be designed. The larger the number of M and N, the larger the gap between M×N and M+N. In other words, the above-mentioned light emitting device driving system 100 is more advantageous for large-scale light emitting device 102 matrices. When the number of light emitting devices 102 reaches several thousand, the above-mentioned light emitting device driving system 100 can achieve the same display effect with fewer IO interfaces and driving numbers, and the cost is lower and the space occupied by the PCB is less.

[0038] In one embodiment, the number of rows and columns of the plurality of light emitting devices 102 arranged in an array is the same. When all rows and columns are selected, all light emitting devices 102 can be displayed as square light emitting blocks. When all rows are selected and only some columns are selected, vertical rectangles can be displayed. In addition, the width of the rectangle can be adjusted according to the selected columns, or the number of displayed rectangles can be adjusted. Furthermore, by selecting rows and columns, a variety of digital information can be displayed to improve the experience of human-computer interaction.

[0039] In one embodiment, the light emitting device 102 includes an LED lamp, the first end is an anode of the LED lamp, and the second end is a cathode of the LED lamp.

[0040] Specifically, the anodes of the LED lamps in the same row are connected together and connected to a high level output terminal of the control unit 101 ; the cathodes of the LED lamps in the same column are connected together and connected to a low level output terminal of the control unit 101 .

[0041] For LED lamps, when the anode is connected to a high level and the cathode is connected to a low level, the LED lamp can be turned on to light up. Figure 1 As shown, for a 4×4 LED matrix, only 8 IO ports are needed to light up 16 LED particles, and each LED can be lit individually. If a traditional LED driving method is used, 16 IO ports need to be set. Therefore, compared with the traditional LED driving system, the light-emitting device driving system 100 of the present application can achieve a lower-cost driving solution.

[0042] In one embodiment, the control unit 101 includes an MCU. For example, please refer to Figure 1 , the MCU includes 8 IO ports, among which Column1 to Column4 are used to output high level, and Row1 to Row4 are used to output low level. Column1 is connected to the anode of the first row of LEDs, Column2 is connected to the anode of the second row of LEDs, Column3 is connected to the anode of the third row of LEDs, and Column4 is connected to the anode of the fourth row of LEDs. Row1 is connected to the cathode of the first column of LEDs, Row2 is connected to the cathode of the second column of LEDs, Row3 is connected to the cathode of the third column of LEDs, and Row4 is connected to the cathode of the fourth column of LEDs. The MCU can control the output level of each IO port. It should be noted that here only a 4×4 LED matrix is ​​used as an example for explanation. In actual product applications, the LED matrix can be 400×400, 1000×1000 or 600×800, and this application does not limit this.

[0043] In one embodiment, the control unit 101 controls one or more of the high level output terminals to output a high level, and controls one or more of the low level output terminals to output a low level according to the control instruction, so as to selectively light up one or more light emitting devices 102 .

[0044] Specifically, the control unit 101 may store control instructions, or may call control instructions from other storage units, so as to output a high level at the selected high level output terminal and output a low level at the selected low level output terminal according to the control instructions. Optionally, the control unit 101 may also be other control devices capable of executing control instructions, which is not limited in the present application.

[0045] The above-mentioned light emitting device driving system 100 can realize light emission control of a larger number of light emitting devices 102 with a lower cost or smaller area MCU, thereby reducing the cost and the area occupied in the PCB board.

[0046] As another aspect of the present application, the present application further discloses an automobile grille lamp, comprising a light emitting device driving system 100 as in any of the above embodiments.

[0047] With the booming development of new energy vehicles, traditional grilles have gradually disappeared or become smaller, replaced by digital grilles with interactive and decorative functions. Digital grilles require a large number of light-emitting devices 102 to display logos, express design concepts, or express emotional appeals. The automobile grille light disclosed in this embodiment can achieve accurate selection and lighting of the light-emitting device 102 by configuring the above-mentioned light-emitting device driving system 100, effectively express a variety of digital information and grille light language special effects, and at a lower cost.

[0048] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0049] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A light emitting device driving system, characterized in that: include: A plurality of light-emitting devices arranged in an array, wherein the light-emitting devices include a first end and a second end, the first ends of the light-emitting devices in the same row are connected together, and the second ends of the light-emitting devices in the same column are connected together; A control unit, wherein the control unit has a plurality of high-level output terminals and a plurality of low-level output terminals; Wherein, the first ends of the light-emitting devices located in the same row are connected to one of the high-level output ends of the control unit; and the second ends of the light-emitting devices located in the same column are connected to one of the low-level output ends of the control unit.

2. The light emitting device driving system according to claim 1, characterized in that: The plurality of light emitting devices arranged in the array have N rows and M columns; The control unit comprises at least N high-level output terminals and at least M low-level output terminals; Among them, N≥2, M≥2.

3. The light emitting device driving system according to claim 2, characterized in that: The number of rows and columns of the plurality of light emitting devices arranged in the array are the same.

4. The light emitting device driving system according to claim 1, characterized in that: The light emitting device comprises an LED lamp, the first end is an anode of the LED lamp, and the second end is a cathode of the LED lamp.

5. The light emitting device driving system according to claim 1, characterized in that: The control unit includes an MCU.

6. The light emitting device driving system according to claim 1, characterized in that: The control unit controls one or more of the high-level output terminals to output a high level, and controls one or more of the low-level output terminals to output a low level, according to the control instruction, so as to selectively light up one or more light-emitting devices.

7. An automobile grille lamp, characterized in that: The invention comprises a light emitting device driving system as claimed in any one of claims 1 to 6.

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