Reinforced SMD (Surface Mount Device) copper column and LED (Light Emitting Diode) display lamp panel

Abstract

The utility model belongs to the technical field of LED display, and relates to a reinforced patch copper column and an LED display lamp panel, the copper column comprises a bonding pad and a column body which are connected together, and the bonding pad is arranged at the front end of the column body and is used for being welded with the LED display lamp panel; the bonding pad comprises a patch part used for being welded to the LED display lamp panel, a protruding part and a notch, the protruding part is located on the back face of the patch part and arranged around the front end of the column body, the protruding part is provided with an inclined face, and the included angle between the inclined face and the patch part is an acute angle; the LED display lamp panel has the beneficial effects that the gap and the inclined surface are arranged on the bonding pad, so that the position between the patch part of the copper column and the back surface of the LED lamp panel, the gap and the inclined surface can be filled with welding tin, the welding contact surface of the tin and the copper column is increased, and the problems that the welding between the existing copper column and the LED display lamp panel is not firm enough and the service life is short are solved. And loosening is easy to occur during long-time use or collision.

Description

Technical Field

[0001] The utility model relates to the technical field of LED display, in particular to a reinforced patch copper column and an LED display lamp board. Background Art

[0002] The LED display light board needs to be installed on the bottom shell or other structural parts through copper pillars. The existing copper pillars are usually a simple rod-shaped structure with a flat or protruding part at one end for welding. These copper pillars are usually made of copper alloy with good thermal conductivity to ensure the dissipation of heat.

[0003] During the welding process, tin soldering is usually used to connect the copper column to the LED display light board. Tin soldering uses melted solder paste (an alloy containing tin and lead) to connect two metal parts. During welding, the solder paste will be heated above the melting point, and the molten tin will fill the contact points between the copper column and the LED display light board to form solder joints. However, the existing copper column has the problem of not being firmly welded to the LED display light board, and it is easy to loosen after long-term use or bumping. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a reinforced patch copper column and an LED display light board, which solves the technical problem that the existing copper column and the LED display light board are not welded firmly enough and are easy to loosen after long-term use or bumping.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0008] In a first aspect, an embodiment of the utility model provides a reinforced patch copper column, the copper column comprises a solder pad and a column body connected together, the solder pad is arranged at the front end of the column body, and is used to be welded together with an LED display light board;

[0009] The soldering pad includes a patch part and a raised part for welding with the LED display light board. The raised part is located on the back of the patch part and is arranged around the front end of the column. The raised part is provided with an inclined surface, and the angle between the inclined surface and the patch part is an acute angle.

[0010] Optionally, the pad is provided with a plurality of notches, and the notches are symmetrically arranged along the circumferential direction of the pad.

[0011] Optionally, the notch runs through the protruding portion from the patch portion; when the copper column is welded to the LED display light board, the tin fills into the notch.

[0012] Optionally, the angle between the inclined surface and the patch portion is ≤45 degrees, and the tin during welding climbs onto the inclined surface and the notch to strengthen the welding of the pad.

[0013] Optionally, an internal threaded hole is provided at the rear end of the column.

[0014] Optionally, the internal threaded hole is a blind hole.

[0015] Optionally, the copper column is an integrally formed part.

[0016] In the second aspect, an embodiment of the utility model provides an LED display light board, including the aforementioned copper column and an LED light board, which are welded together; the welded tin is filled in the position, notch and inclined surface between the patch part of the copper column and the back side of the LED light board.

[0017] (III) Beneficial effects

[0018] The beneficial effects of the utility model are as follows: the utility model provides a reinforced patch copper column and LED display light board, since a notch and a bevel are set on the soldering pad, compared with the prior art, the soldered tin can be filled in the position, notch and bevel between the patch part of the copper column and the back side of the LED light board; the soldering contact surface between the tin and the copper column is increased, which solves the technical problem that the existing copper column and the LED display light board are not soldered firmly enough and are easy to loosen when used for a long time or bumped. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional schematic diagram of a copper pillar of Example 1 of a reinforced patch copper pillar and an LED display light board of the utility model;

[0020] Figure 2 It is a rear view schematic diagram of a copper column of Example 2 of a reinforced patch copper column and an LED display light board of the utility model;

[0021] Figure 3 This is one of the schematic diagrams of welding the copper pillar and the LED light board of Example 3 of a reinforced patch copper pillar and an LED display light board of the utility model;

[0022] Figure 4 The second schematic diagram of welding of the copper pillar and the LED light board of the embodiment 3 of a reinforced patch copper pillar and an LED display light board of the utility model;

[0023] Figure 5 This is the third schematic diagram of welding of the copper column and the LED light board of Example 3 of a reinforced patch copper column and LED display light board of the utility model.

[0024] [Description of Reference Numerals]

[0025] 1. pad; 11. patch portion; 12. raised portion; 121. inclined surface; 13. notch;

[0026] 2. Cylinder; 21. Internal threaded hole;

[0027] 300, LED light board; 301, PCB board; 302, lamp beads;

[0028] 401, first tin position; 402, second tin position; 403, third tin position. DETAILED DESCRIPTION

[0029] In order to better explain the utility model and facilitate understanding, the utility model is described in detail below with reference to the accompanying drawings and through specific implementation methods. Figure 1 The orientation is taken as a reference, with the direction where the patch portion 11 is located being the “front” and the direction where the column 2 is located being the “back”.

[0030] The utility model embodiment proposes a reinforced patch copper column and LED display light board, the copper column includes a soldering pad and a column body connected together, the soldering pad is arranged at the front end of the column body, and is used to be welded together with the LED display light board; the soldering pad includes a patch part, a protrusion and a notch for welding with the LED display light board, the protrusion is located on the back of the patch part and is arranged around the front end of the column body, the protrusion is provided with a bevel, and the angle between the bevel and the patch part is an acute angle; since the notch and the bevel are arranged on the soldering pad, compared with the prior art, it can make the soldered tin fill the position between the patch part of the copper column and the back of the LED light board, the notch and the bevel, increase the contact surface of the soldering of the tin and the copper column, and solve the technical problem that the existing copper column and the LED display light board are not firmly welded and are easy to loosen after long-term use or bumping.

[0031] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0032] Embodiment 1:

[0033] Reference Figure 1 The present embodiment 1 provides a reinforced copper column, which includes a solder pad 1 and a column 2 connected together. The solder pad 1 is arranged at the front end of the column 2 for welding with the LED display light board. The rear end of the column 2 is provided with an internal threaded hole 21 to provide a position for threaded connection.

[0034] See also Figure 1 and Figure 3 The pad 1 includes a patch portion 11 and a raised portion 12 for soldering with the LED display light board. The raised portion 12 is located on the back of the patch portion 11 and is arranged around the front end of the column 2. The raised portion 12 is provided with an inclined surface 121. The angle between the inclined surface 121 and the patch portion 11 is an acute angle.

[0035] See also Figure 1 In some feasible solutions, the angle between the inclined surface 121 and the patch portion 11 is ≤45 degrees, so that the edges of the pad 1 are thinner, and the thickness can reach 0.1mm to 0.15mm, which is convenient for the tin to climb onto the inclined surface 121 during welding.

[0036] In actual application, the internal thread hole 21 is usually a blind hole, and the copper column is an integrally formed part; the pad 1 of the copper column is circular, with a diameter of 6 mm, and the column body 2 is cylindrical, with an outer diameter of 4 mm. The maximum thickness of the entire pad 1 is 0.5 mm. The height of the entire copper column is 3.5 mm.

[0037] Embodiment 2:

[0038] See also Figure 2 On the basis of Example 1, this Example 2 improves the copper column by providing a plurality of notches 13 around the edges of the pad 1 of the copper column. The notches 13 penetrate the raised portion 12 from the patch portion 11 and are symmetrically arranged along the circumferential direction of the pad 1.

[0039] In actual application, the number of notches 13 can be set to 6, the angle between the two side walls of the notch 13 can be set to 30 degrees, the size of the notch 13 is 0.98 mm, the depth of the notch 13 is 0.5 mm, and the distance from the center of the patch part 11 to the notch 13 is 2.5 mm.

[0040] See also Figure 2 and Figure 4 When the copper column is welded to the LED display light board, tin is filled from the position between the patch portion 11 and the back of the LED light board 300 to the gap 13, increasing the contact surface between the tin and the copper column, making the welding of the copper column and the LED display light board more stable and reliable.

[0041] Embodiment 3:

[0042] Reference Figures 3 to 5 Based on the first and second embodiments, the third embodiment provides an LED display lamp board, including the aforementioned copper column and an LED lamp board 300, which are welded together. The LED lamp board 300 includes a PCB board 301 and a lamp bead 302 mounted on the front of the PCB board 301.

[0043] When welding, you can decide the welding scheme according to actual needs, as follows:

[0044] See also Figure 3 In the first welding scheme, the soldering pad 1 is provided with no notch 13, and the first tin position 401 between the patch portion 11 of the copper column and the back side of the PCB board 301 is filled with tin, that is, the welding position is the patch portion 11 and the back side of the PCB board 301. When there is enough tin, the tin will climb onto the inclined surface 121.

[0045] See also Figure 4 The second welding scheme is that the pad 1 is provided with a notch 13. During the welding process, the tin in the first tin position 401 is filled into the notch 13, that is, filled into the second tin position 402. Compared with the first welding scheme, the welding is more reliable.

[0046] See also Figure 5 The third welding scheme is to set a notch 13 on the pad 1. During the welding process, after the tin in the first tin position 401 is filled into the notch 13, it climbs along the inclined surface 121 to the third tin position 403 to wrap the pad 1. The welding effect is more solid than that in the second scheme.

[0047] Therefore, according to actual welding requirements and the amount of tin used, tin can be filled in the first tin position 401 between the patch portion 11 and the back of the PCB board 301, the second tin position 402 at the notch 13, and the third tin position 403 on the inclined surface 121 during welding.

[0048] In the description of the present utility model, it should be understood that 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 technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0049] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In the present utility model, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0051] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "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 utility model. 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, unless they are contradictory.

[0052] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A reinforced patch copper column, characterized in that: The copper column comprises a soldering pad (1) and a column (2) connected together, wherein the soldering pad (1) is arranged at the front end of the column (2) and is used for being soldered to the LED display light board; The soldering pad (1) comprises a patch portion (11) and a raised portion (12) for welding to an LED display light board; the raised portion (12) is located on the back side of the patch portion (11) and is arranged around the front end of the column (2); the raised portion (12) is provided with an inclined surface (121); and the angle between the inclined surface (121) and the patch portion (11) is an acute angle.

2. A reinforced copper column according to claim 1, characterized in that: The pad (1) is provided with a plurality of notches (13), and the notches (13) are symmetrically arranged along the circumferential direction of the pad (1).

3. A reinforced patch copper column as claimed in claim 2, characterized in that: The notch (13) passes through the protruding portion (12) from the patch portion (11); When the copper column is welded to the LED display light board, tin fills into the gap (13).

4. A reinforced patch copper column as claimed in claim 3, characterized in that: The angle between the inclined surface (121) and the patch portion (11) is less than or equal to 45 degrees, and the tin during welding climbs onto the inclined surface (121) and the notch (13), thereby reinforcing the welding of the solder pad (1).

5. A reinforced patch copper pillar as claimed in claim 1, characterized in that: An internal threaded hole (21) is provided at the rear end of the column (2).

6. A reinforced patch copper pillar as claimed in claim 5, characterized in that: The internal threaded hole (21) is a blind hole.

7. A reinforced patch copper pillar as claimed in claim 1, characterized in that: The copper column is an integrally formed part.

8. An LED display light board, characterized in that: It comprises a reinforced patch copper column as claimed in any one of claims 1 to 7 and an LED light board (300), which are welded together; The soldered tin is filled in the position between the patch portion (11) of the copper column and the back surface of the LED lamp board (300), the notch (13) and the inclined surface (121).

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