LED mounting unit and display screen

Abstract

The utility model relates to an LED installation unit and a display screen, and belongs to the technical field of LED display devices. Wherein the LED mounting unit comprises a lamp bead, a connecting part and a supporting leg; a plurality of lamp beads are arranged, and the plurality of lamp beads are aligned with one another and are arranged at intervals; each lamp bead comprises a bead body and a plurality of lamp bases arranged on the bottom surface of the bead body; the lamp feet are used for being fixedly connected with an external circuit board and are electrically connected with the circuit board, so that the bead body can emit light rays. The connecting parts are arranged between the adjacent lamp beads and are fixedly connected with the bead body, so that the plurality of mutually aligned lamp beads are fixed into an integral structure; and the supporting legs are arranged on the bottom surface of the connecting part and are used for being fixedly connected with the circuit board, so that the adhesive force between the LED mounting unit and the circuit board is improved, and the technical problem that lamp beads of an existing display screen are likely to fall off or be damaged when the display screen is collided by external force is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to LED display device technical field, especially LED installation unit and display screen of a kind of. BACKGROUND

[0002] In recent years, with the rapid development of LED display technology and the continuous improvement of user demand for high-quality display effect, LED display screen is widely used in commercial advertising, conference display, stage performance and public place information publishing and other fields. Especially in the field of high-density, small-pitch LED display screen, users have higher requirements on the definition of display picture, color consistency and reliability of equipment.

[0003] At present, most of the indoor LED display screens on the market are usually made by soldering LED lamp beads on PCB board through tin paste. However, the existing LED lamp beads and PCB board are only connected by tin soldering on the lamp pins, and the connection adhesion is small. When the LED display screen is impacted by external force during installation, transportation or daily use, the LED lamp beads may fall off from the PCB board due to uneven stress or insufficient thrust, resulting in dark spots and dead lights on the display screen, and further affecting the display effect of the whole display screen. UTILITY MODEL CONTENT

[0004] One object of the utility model is to solve the technical problem that the existing display screen is prone to lamp bead falling off or damage when impacted by external force.

[0005] To solve the above technical problems, the embodiment provides an LED installation unit, which comprises: a plurality of lamp beads, which are arranged in alignment and at intervals; each lamp bead comprises a bead body and a plurality of lamp pins arranged on the bottom surface of the bead body; the lamp pins are used to connect and fix with an external circuit board and form an electrical connection with the circuit board, so that the bead body can emit light; a connecting part is arranged between adjacent lamp beads and fixedly connected with the bead body to fix the plurality of aligned lamp beads into an integrated structure; a supporting leg is arranged on the bottom surface of the connecting part, and the supporting leg is used to fixedly connect with the circuit board to improve the adhesion between the LED installation unit and the circuit board.

[0006] In some embodiments of the application, the lamp beads are provided at least two, and the connecting part is arranged between the two adjacent lamp beads, and the connecting part is fixedly connected with the side walls opposite to the two adjacent lamp beads.

[0007] In some embodiments of the application, a plurality of supporting legs are arranged on each connecting part, and the plurality of supporting legs are arranged at intervals around the outer edge of the bottom surface of the connecting part.

[0008] In some embodiments of the present application, the support leg of each of the two adjacent lamp beads is provided with at least two support legs, the connecting line of the support legs is perpendicular to the connecting line between the two adjacent lamp beads, and the support legs are located on the symmetry axis of the two adjacent lamp beads.

[0009] In some embodiments of the present application, each of the lamp beads comprises four lamp legs arranged at or near the four top corner positions of the bottom surface of the bead body.

[0010] In some embodiments of the present application, the bead body comprises a substrate, a light emitting chip and a packaging layer; the light emitting chip is arranged on the side of the substrate away from the lamp legs and is electrically connected with the lamp legs; and the packaging layer covers the side of the substrate provided with the light emitting chip.

[0011] In some embodiments of the present application, the connecting part and the substrate are located in the same plane.

[0012] In some embodiments of the present application, the light emitting chip comprises at least one or more of red, green and blue LED chips to respectively emit light spectrum of corresponding color wavelength.

[0013] The present application also provides a display screen comprising: a circuit board; and the LED mounting units as described above, the lamp legs and the support legs of each of the LED mounting units being fixed with the circuit board, so that the plurality of LED mounting units can be fixed in an array on the circuit board.

[0014] In some embodiments of the present application, the circuit board is provided with a plurality of first soldering points and a plurality of second soldering points; the first soldering points correspond to the lamp legs of the lamp beads, and when the lamp legs are fixed with the first soldering points, the lamp beads are electrically connected with the circuit board; and the second soldering points correspond to the support legs on the connecting parts, so that the support legs on the connecting parts can be fixed on the second soldering points of the circuit board.

[0015] According to the above technical solution, the present application has the following beneficial effects:

[0016] The present application provides an LED mounting unit and a display screen, the LED mounting unit comprising a plurality of lamp beads, the plurality of lamp beads being arranged side by side and spaced apart. A connecting part is arranged between adjacent lamp beads, so that the plurality of lamp beads arranged side by side and spaced apart are fixed as an integral structure. The bottom surface of each connecting part is provided with a support leg, which can be fixedly connected with an external circuit board. Therefore, compared with the traditional lamp bead connection mode, the support leg on the connecting part in the present application increases the connection position between the LED mounting unit and the circuit board, thereby enhancing the adhesion between the LED mounting unit and the circuit board, avoiding loosening or falling off of the lamp beads due to insufficient thrust, and improving the reliability and service life of the display screen. Attached Figure Description

[0017] Figure 1 This is a front view structural diagram of the LED mounting unit.

[0018] Figure 2 for Figure 1 A front-view structural diagram of the LED mounting unit.

[0019] Figure 3 for Figure 1 A front view schematic diagram of the LED beads in the LED mounting unit.

[0020] Figure 4 for Figure 3 A perspective view of the LED beads in the LED mounting unit.

[0021] The annotations in the attached figures are explained as follows:

[0022] 100. LED mounting unit; 10. Lamp bead; 11. Bead body; 111. Substrate; 112. Light-emitting chip; 113. Encapsulation layer; 12. Lamp foot; 20. Connecting part; 21. Support foot. Detailed Implementation

[0023] Typical embodiments embodying the features and advantages of this utility model will be described in detail in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0024] In the description of this application, it should be understood that, in the embodiments shown in the accompanying drawings, the indications of direction or positional relationships (such as up, down, left, right, front, and back, etc.) are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. These descriptions are appropriate when these elements are in the positions shown in the accompanying drawings. If the description of the positions of these elements changes, these directional indications also change accordingly.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] To solve the technical problem that the traditional LED lamp bead and the PCB board have small connection adhesion, when the LED display screen is impacted by external force during installation, transportation or daily use, the LED lamp bead may fall off from the PCB board due to insufficient adhesion, thereby affecting the display effect of the whole display screen.

[0027] Please refer to Figures 1 to 4 The embodiment provides an LED mounting unit 100 which comprises a lamp bead 10, a connecting part 20 and a supporting leg 21.

[0028] The lamp bead 10 is provided with a plurality of lamp beads 10 which are aligned with each other and arranged at intervals. Each lamp bead 10 comprises a bead body 11 and a plurality of lamp pins 12 arranged on the bottom surface of the bead body 11. The lamp pin 12 is used for fixedly connecting with the external circuit board and enabling the lamp bead 10 to be in electrical communication with the external circuit board, so that the bead body 11 can emit light.

[0029] The connecting part 20 is arranged between the adjacent lamp beads 10 and fixedly connected with the bead body 11, so as to fix the plurality of lamp beads 10 which are arranged side by side into an integrated structure. The bottom surface of the connecting part 20 is provided with the supporting leg 21 which is used for fixedly connecting with the circuit board, so as to improve the adhesion between the LED mounting unit 100 and the circuit board.

[0030] Specifically, the connecting part 20 is arranged between the adjacent lamp beads 10, so as to fix the plurality of lamp beads 10 into an integrated structure, thereby forming an integral LED mounting unit 100. The supporting leg 21 is arranged on the bottom surface of each connecting part 20, and the supporting leg 21 can be fixed with the external circuit board, so that each LED mounting unit 100 has the connecting position of the supporting leg 21 on the connecting part 20 compared with the connection of the traditional single lamp bead 10, thereby enhancing the adhesion between the LED mounting unit 100 and the external circuit board, enabling the LED mounting unit 100 to be more stably connected on the circuit board, and avoiding the loosening or falling off of the lamp bead 10.

[0031] Please refer to Figure 3 and Figure 4 In some embodiments, the bead body 11 comprises a substrate 111, a light emitting chip 112 and an encapsulation layer 113. The light emitting chip 112 is arranged on the side of the substrate 111 away from the lamp pin 12 and electrically connected with the lamp pin 12; and the encapsulation layer 113 covers the side of the substrate 111 provided with the light emitting chip 112.

[0032] Specifically, the light emitting chip 112 is arranged on the top surface of the substrate 111 away from the lamp pins 12, and is electrically connected with the lamp pins 12 through the circuit on the substrate 111, so that the circuit board can supply power to the light emitting chip 112 through the lamp pins 12, and then control the light emitting chip 112 to emit light. The packaging layer 113 covers one side of the substrate 111 where the light emitting chip 112 is arranged, and can be made of high-transmittance silicone or epoxy resin material. The packaging layer 113 can prevent the light emitting chip 112 from oxidizing and protect the light emitting chip 112 from external impact. In some embodiments, the surface of the packaging layer 113 can be designed as a convex lens structure to improve the light extraction efficiency and uniformity.

[0033] Referring to Figure 2 and Figure 4 In some embodiments, each lamp bead 10 includes four lamp pins 12 arranged at or near the four top corner positions of the bottom surface of the bead body 11.

[0034] Specifically, the bead body 11 can have a rectangular structure, and the four lamp pins 12 can be respectively arranged at or near the four top corner positions of the bottom surface of the bead body 11 and form a symmetrical arrangement. The four lamp pins 12 can be made of metal material and are welded with an external circuit board through a tin paste welding process to realize electrical interconnection. Since the lamp pins 12 are distributed at the four top corner positions of the bottom surface of the bead body 11, the lamp bead 10 can be provided with uniform support force to improve the stability of the lamp bead 10 and prevent the lamp bead 10 from falling off or being damaged due to excessive force in a single direction.

[0035] Referring to Figure 1 and Figure 3 In some embodiments, the light emitting chip 112 includes one or more of red, green, and blue LED chips to emit light spectra of corresponding wavelengths, respectively.

[0036] Specifically, the light emitting chip 112 can include one or more combinations of red, green, and blue LED chips to adapt to different application environments. Among them, the red LED chip can excite the spectral wavelength of red light, the green LED chip can excite the spectral wavelength of green light, and the blue LED chip can excite the spectral wavelength of blue light. When a single lamp bead 10 contains three kinds of light emitting chips, i.e., a single lamp bead 10 is provided with chips capable of emitting red, green, and blue primary colors, the single lamp bead 10 can emit light of various colors through the mixing of the three primary colors.

[0037] Referring to Figure 1 and Figure 3 In some embodiments, the four lamp pins 12 of the lamp bead 10 are respectively one common anode lamp pin 12 and three cathode lamp pins 12.

[0038] The anodes of the red LED chip, the green LED chip and the blue LED chip are connected with the common anode lamp pin 12; the cathodes of the red LED chip, the green LED chip and the blue LED chip are connected with the corresponding R lamp pin 12, G lamp pin 12 and B lamp pin 12 respectively, so that the R (red), G (green) and B (blue) light emitting chips 112 in each lamp bead 10 can be independently controlled in three colors, realizing fine color mixing and high-precision brightness adjustment.

[0039] Please refer to Figure 1 and Figure 2 In some embodiments, the LED mounting unit 100 can include at least two lamp beads 10, and the connecting part 20 is fixedly connected with the side walls opposite to the adjacent two lamp beads 10.

[0040] Specifically, the LED mounting unit 100 can include two lamp beads 10. Compared with the traditional single lamp bead 10 and the circuit board, if the height of any one lamp pin 12 on the lamp bead 10 is too high or too low during welding, the substrate 111 of the entire lamp bead 10 will be tilted, and then the light emitting chip 112 on the lamp bead 10 will be tilted, so that the display effect of some areas on the display screen will be dark or too bright, forming a serious color difference problem of yin and yang color.

[0041] And the two lamp beads 10 are connected as an integral structure, so that the LED mounting unit 100 has eight lamp pins 12. During welding, the overall flatness of the lamp bead 10 on the circuit board will not be affected by the height difference of the lamp pin 12, thereby eliminating the occurrence of technical problems such as yin and yang color.

[0042] Therefore, each LED mounting unit 100 is composed of two lamp beads 10, which can effectively improve the flatness of the lamp bead 10 welded to the circuit board compared with the installation of a single lamp bead 10.

[0043] In other embodiments, each LED mounting unit 100 further includes three, four or five or more lamp beads 10. The plurality of lamp beads 10 can be arranged in the same direction and aligned with each other, and the connecting part 20 can be arranged between the adjacent lamp beads 10 to fix the plurality of lamp beads 10 to form an integral LED mounting unit 100.

[0044] In some embodiments, the connecting part 20 and the substrate 111 are located in the same plane. That is, the connecting part 20 and the substrate 111 of the lamp bead body 11 are located in the same horizontal plane, which can ensure better stability and consistency between the connecting part 20 and the substrate 111. The connecting part 20 and the substrate 111 in the same plane can also optimize the thickness of the LED mounting unit 100, reduce unnecessary structural height, and make the thickness of the LED mounting unit 100 more compact, facilitating installation and maintenance.

[0045] And, the connecting portion 20 and the substrate 111 are arranged in the same plane, the height of the support leg 21 can be the same as the height of the lamp leg 12, to further ensure the smooth contact between the lamp bead 10 and the circuit board, prevent the lamp bead 10 from tilting due to uneven force during welding, and facilitate the welding of the LED mounting unit 100.

[0046] In some embodiments, a plurality of support legs 21 are arranged on each connecting portion 20.

[0047] Specifically, a plurality of support legs 21 are arranged around the bottom surface of the connecting portion 20. Compared with the fixed connection between the eight lamp legs 12 on the two lamp beads 10 and the circuit board, the plurality of support legs 21 further increase the connection points between the LED mounting unit 100 and the circuit board, thereby enhancing the adhesion between the LED mounting unit 100 and the circuit board. And the support legs 21 are arranged around the outer edge of the bottom of the connecting portion 20, which facilitates the welding of the welding gun.

[0048] Please refer to Figure 3 and Figure 4 In some embodiments, at least two support legs 21 are arranged on the connecting portion 20 between the two adjacent lamp beads 10, the connecting line of the support leg 21 is perpendicular to the connecting line between the two adjacent lamp beads 10, and the support leg 21 is located on the symmetry axis of the two adjacent lamp beads 10.

[0049] Specifically, two support legs 21 can be arranged on the connecting portion 20 between the two lamp beads 10. At this time, the eight lamp legs 12 and the two support legs 21 of the LED mounting unit 100 constitute ten fixed welding points. Compared with the eight fixed welding points directly connected by the two lamp beads 10, the adhesion between them and the circuit board is stronger, and even if there is a bump during transportation, the LED mounting unit 100 will not easily fall off.

[0050] And the connecting line of the two support legs 21 is perpendicular to the connecting line between the two lamp beads 10, and the two support legs 21 are located on the symmetry axis of the two lamp beads 10, so that the support leg 21 and the lamp leg 12 do not interfere with each other, and the welding point spacing between the LED mounting unit 100 and the circuit board is more uniform, the LED mounting unit 100 can obtain more excellent shock resistance, reduce the unbalanced stress during installation, and make the lamp bead 10 on the display screen more flat.

[0051] Of course, in other embodiments, the support feet 21 on the connecting portion 20 between two adjacent lamp beads 10 can also be provided in three, four or more quantities to further enhance the adhesion between the LED mounting unit 100 and the circuit board and prevent the LED mounting unit 100 from falling off the circuit board under external force.

[0052] The embodiment also provides a display screen including a circuit board and the above-described LED mounting unit 100. The lamp pins 12 and the support feet 21 of each LED mounting unit 100 are fixed to the circuit board, so that the plurality of LED mounting units 100 can be fixed in an array on the circuit board.

[0053] Further, the circuit board is provided with a plurality of first soldering points and a plurality of second soldering points. The first soldering points correspond to the lamp pins 12 of the lamp beads 10. When the lamp pins 12 are fixed to the first soldering points, the lamp beads 10 are electrically connected to the circuit board. The second soldering points correspond to the support feet 21 on the connecting portion 20, so that the support feet 21 on the connecting portion 20 can be fixed to the second soldering points on the circuit board.

[0054] Specifically, the lamp pins 12 of each LED lamp bead 10 are connected to the first soldering points on the circuit board by soldering to achieve electrical connection; and it is ensured that the current can flow from the lamp pins 12 into the light-emitting chips 112 on the lamp beads 10, thereby driving the light-emitting chips 112 to emit corresponding light. At this time, the second soldering points on the circuit board correspond to the support feet 21 on the connecting portion 20, and the support feet 21 are also fixed to the circuit board by soldering, thereby ensuring the physical fixation between the connecting portion 20 and the circuit board. The support feet 21 can provide stable physical support for the LED mounting unit 100, so as to ensure that the LED mounting unit 100 will not be displaced or fall off due to external force or vibration during use. It improves the anti-shock performance and anti-external impact ability of the display screen, avoids loosening or damage of the lamp beads 10 due to external impact, vibration or mechanical load, and enhances the structural stability of the LED mounting unit 100.

[0055] In summary, the embodiment provides an LED mounting unit 100 and a display screen. The LED mounting unit 100 includes a plurality of lamp beads 10, which are arranged side by side and spaced apart. A connecting portion 20 is arranged between adjacent lamp beads 10, so that the plurality of lamp beads 10 arranged side by side and spaced apart are fixed as an integral structure. The bottom surface of each connecting portion 20 is provided with a support foot 21, which can be fixedly connected to an external circuit board. Therefore, compared with the traditional connection mode of the lamp beads 10, the support feet 21 in the embodiment increase the connection points between the LED mounting unit 100 and the circuit board, thereby enhancing the adhesion between the LED mounting unit 100 and the circuit board and avoiding loosening or falling off of the lamp beads 10 due to insufficient thrust, so as to improve the reliability and service life of the display screen.

[0056] While the present application has been described with reference to several exemplary embodiments, it is understood that the words that have been used are words of description and illustration, rather than words of limitation. As mentioned above, the present application is capable of taking many forms of implementation and being practiced in various ways, and the above description is not intended to limit the application in any way, except as required by the appended claims and their equivalents.

Claims

1. An LED mounting unit characterized by comprising: include: The lamp beads are arranged in multiples, aligned with each other and spaced apart; each lamp bead includes a bead body and multiple lamp feet disposed on the bottom surface of the bead body; the lamp feet are used to connect and fix to an external circuit board and form an electrical connection with the circuit board, so that the bead body can emit light; A connecting part is disposed between adjacent LED beads and is fixedly connected to the bead body to fix multiple mutually aligned LED beads into a single structure. A support foot is provided on the bottom surface of the connecting part. The support foot is used to fix the LED mounting unit to the circuit board to improve the adhesion between the LED mounting unit and the circuit board.

2. The LED mounting unit according to claim 1, characterized by The lamp beads are provided in at least two, and the connecting part is provided between two adjacent lamp beads. The connecting part is fixedly connected to the sidewalls of the two adjacent lamp beads.

3. The LED mounting unit according to claim 2, characterized by Each of the connecting parts is provided with a plurality of supporting feet, which are arranged at intervals around the outer edge of the bottom surface of the connecting part.

4. The LED mounting unit according to claim 3, characterized by At least two support feet are provided for each pair of adjacent LED beads. The line connecting the support feet is perpendicular to the line connecting the two adjacent LED beads, and the support feet are located on the axis of symmetry of the two adjacent LED beads.

5. The LED mounting unit according to claim 1, characterized by Each of the lamp beads includes four lamp feet, which are arranged at or near the four apex positions on the bottom surface of the bead body.

6. The LED mounting unit according to claim 5, characterized by The bead body includes a substrate, a light-emitting chip, and an encapsulation layer; the light-emitting chip is disposed on the side of the substrate away from the lamp base and is electrically connected to the lamp base; the encapsulation layer covers the side of the substrate on which the light-emitting chip is disposed.

7. The LED mounting unit according to claim 6, characterized by The connecting portion and the substrate are located on the same plane.

8. The LED mounting unit of claim 6, wherein The light-emitting chip includes at least one or more of red, green, and blue LED chips to emit spectra of corresponding color wavelengths.

9. A display screen, characterized by include: Circuit board; According to any one of claims 1-8, the lamp base and support base of each LED mounting unit are fixed to the circuit board, so that a plurality of LED mounting units can be arrayed and fixed on the circuit board.

10. The display screen according to claim 9, characterized in that, The circuit board is provided with multiple first solder joints and multiple second solder joints; The first solder joint corresponds to the lamp base of the LED bead. When the lamp base is fixed to the first solder joint, the LED bead is electrically connected to the circuit board. The second solder joint corresponds to the support foot on the connecting part, so that the support foot on the connecting part can be fixed to the second solder joint on the circuit board.

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