LED light-emitting assembly

Abstract

The utility model discloses an LED light-emitting assembly which comprises a lens and a PCB, LED lamp beads are arranged on the top face of the PCB, the lens corresponds to the LED lamp beads, a metal welding pin is embedded in the lens, the lens is welded and fixed to the PCB through the metal welding pin, the part, embedded into the lens, of the metal welding pin is provided with a buckle glue groove hole, and the buckle glue groove hole is filled in part of the area of the lens. According to the LED light-emitting assembly, the lens is fixedly connected with the PCB in a welding mode, the connecting strength of the lens and the PCB is effectively improved, and therefore the structural stability of the LED light-emitting assembly is enhanced, part of the copper foil layer on the PCB does not need to be removed, the overall area of the copper foil layer cannot be reduced, and the heat dissipation performance of the light-emitting assembly can be guaranteed. In addition, the metal welding pin is provided with the buckle glue groove hole, so that the metal welding pin and the lens can be connected more stably, the lens and the metal welding pin are prevented from being separated, the structural stability of the LED light-emitting assembly is improved to a greater extent, and the LED light-emitting assembly is durable.

Description

Technical Field

[0001] The utility model relates to the technical field of LED photoelectric technology, in particular to an LED light-emitting component. Background Art

[0002] With the development of materials, microelectronic information, and optical technology, the application of LED (light-emitting diode) products is becoming more and more extensive, and has a good development prospect. In actual industry and life, LED is mainly used in information display electronic instruments, household appliances and other information digital displays, urban traffic lights, LCD (liquid crystal display) backlights, semiconductor indoor / outdoor lighting, safety lighting, special lighting, automotive interior and exterior lights and turn signals, etc., especially in the display industry such as LCD TVs, lighting, and advertising light boxes, which are basically LED light sources. In order to use LED light-emitting components to emit light more evenly and with higher light output efficiency, the current solution is to use LED (light-emitting diode) with lens.

[0003] For existing LED light-emitting components, the lens is generally fixed to the PCB board by gluing. In actual use, the lens sometimes falls off, affecting the service life of the LED light-emitting component. In order to improve the lens bonding effect, the existing method is to bond the lens to the glass fiber in the PCB board through epoxy resin glue or UV glue. The specific method is to remove part of the copper foil on the PCB board to expose the substrate (glass fiber). However, the copper foil area is reduced, and accordingly, the heat dissipation area of ​​the LED light-emitting component is reduced, which undoubtedly affects the heat dissipation effect of the light-emitting component. Utility Model Content

[0004] The technical problem solved by the utility model is to provide an LED light-emitting component with stable structure and good heat dissipation.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: an LED light-emitting component, including a lens and a PCB board, the top surface of the PCB board is provided with LED lamp beads, the lens is arranged corresponding to the LED lamp beads, a metal welding foot is embedded in the lens, the lens is welded and fixed to the PCB board through the metal welding foot, the part of the metal welding foot embedded in the lens has a glue groove hole, and a partial area of ​​the lens fills the glue groove hole.

[0006] In one embodiment, the metal welding foot includes a welding plate portion exposed outside the lens, and the bottom surface of the welding plate portion is a welding plane.

[0007] In one embodiment, the metal welding pins and the LED lamp beads are both welded and fixed to the PCB board through a surface mounting process.

[0008] In one embodiment, the metal welding foot further includes an embedded portion, the embedded portion is embedded in the lens, the glue groove is provided on the embedded portion, and the embedded portion and the welding plate portion are an integral structure formed by integral processing.

[0009] In one embodiment, the glue fastening slot is a notch provided on a side of the embedding portion.

[0010] In one embodiment, the glue-fastening slots are respectively provided on two opposite sides of the embedded portion, and the glue-fastening slots located on two opposite sides of the embedded portion are arranged in a one-to-one correspondence.

[0011] In one embodiment, the glue fastening slot is a blind hole or a through hole.

[0012] In one embodiment, the number of the glue groove holes on the metal welding foot is one or more.

[0013] In one embodiment, there are multiple metal welding feet on a single lens.

[0014] In one embodiment, the plurality of metal welding feet on the same lens are evenly distributed.

[0015] The beneficial effects of the utility model are:

[0016] In the LED light-emitting component, the lens is fixedly connected to the PCB board by welding, which effectively improves the connection strength between the lens and the PCB board, thereby enhancing the structural stability of the LED light-emitting component. Moreover, there is no need to remove part of the copper foil layer on the PCB board, and the overall area of ​​the copper foil layer will not be reduced, which is conducive to ensuring the heat dissipation performance of the light-emitting component.

[0017] In addition, the metal welding foot has a glue groove, so that the metal welding foot and the lens can form a more stable connection, avoiding separation of the lens and the metal welding foot, which is beneficial to further improve the structural stability of the LED light-emitting component and make the LED light-emitting component durable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 This is a cross-sectional view of the LED light-emitting assembly of the first embodiment of the utility model;

[0020] Figure 2This is a schematic diagram of the structure of a lens in an LED light-emitting assembly according to Embodiment 1 of the present utility model;

[0021] Figure 3 This is a schematic structural diagram of a metal welding foot according to the first embodiment of the utility model.

[0022] Description of Figure Numbers:

[0023] 1. Lens;

[0024] 2. PCB board;

[0025] 3. LED lamp beads;

[0026] 4. Metal welding foot; 41. Welding plate portion; 42. Embedded portion; 43. Glue slot hole; 44. Variable diameter transition portion. DETAILED DESCRIPTION

[0027] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0031] In addition, if the meaning of "and / or" appears in the full text is to include three parallel solutions, taking "and / or" as an example, it includes solutions, or solutions, or solutions that are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0032] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" 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 this application can be understood according to specific circumstances.

[0033] Embodiment 1

[0034] Please refer to Figures 1 to 3 , Embodiment 1 of the present utility model is: an LED light-emitting component, comprising a lens 1 and a PCB board 2, wherein an LED lamp bead 3 is disposed on the top surface of the PCB board 2, wherein the lens 1 is arranged corresponding to the LED lamp bead 3, wherein a metal welding foot 4 is embedded on the lens 1, wherein the lens 1 is welded and fixed to the PCB board 2 through the metal welding foot 4, wherein the portion of the metal welding foot 4 embedded in the lens 1 has one or more glue grooves 43, wherein a partial area of ​​the lens 1 is filled with the glue grooves 43 so that the metal welding foot 4 and the lens 1 form a hooking effect, thereby ensuring the stability of the connection between the metal welding foot 4 and the lens 1; it should be noted that the glue grooves 43 can be either in the form of a groove structure or in the form of a hole structure.

[0035] In a specific product, a plurality of the LED lamp beads 3 are disposed on the PCB board 2 , the number of the lenses 1 is the same as the number of the LED lamp beads 3 , and the LED lamp beads 3 and the lenses 1 are disposed in a one-to-one correspondence.

[0036] In order to ensure the welding area of ​​the metal welding foot 4, preferably, the metal welding foot 4 includes a welding plate portion 41 exposed from the lens 1, and the bottom surface of the welding plate portion 41 is a welding plane.

[0037] During the production and processing of LED light-emitting components, it is preferred that the metal welding feet 4 and the LED lamp beads 3 are both welded and fixed to the PCB board 2 through a surface mounting process. In this way, the manufacturing process of the LED light-emitting components can be simplified, so that the LED lamp beads 3 and the lens 1 can be connected to the PCB board 2 at the same workstation (i.e., the reflow soldering workstation), which is beneficial to reduce the equipment preparation cost of the LED light-emitting components and improve the production efficiency of the LED light-emitting components, reduce the manufacturing cost of the LED light-emitting components, and improve the market competitiveness.

[0038] In detail, the metal welding foot 4 also includes an embedded portion 42, the embedded portion 42 and the welding plate portion 41 are an integrated structure formed by integral processing, the embedded portion 42 is embedded in the lens 1, and the glue groove 43 is provided on the embedded portion 42. Optionally, the embedded portion 42 is vertically connected to the welding plate portion 41. In order to improve the stress concentration phenomenon at the connection between the embedded portion 42 and the welding plate portion 41 and reduce the risk of fracture at the connection, it is preferred that the embedded portion 42 is connected to the welding plate portion 41 through a variable diameter transition portion 44, and the variable diameter transition portion 44 is in a polygonal pyramid shape as a whole.

[0039] In this embodiment, the adhesive grooves 43 are notches provided on the side of the embedded portion 42. Specifically, the adhesive grooves 43 are provided on opposite sides of the embedded portion 42, and the adhesive grooves 43 on opposite sides of the embedded portion 42 are provided one by one.

[0040] In other embodiments, the glue snap slot 43 is a blind hole or a through hole. In particular, when the glue snap slot 43 is a through hole, both ends of the lens 1 material filled in the through hole are connected to other areas of the lens 1, which can greatly improve the stability of the connection between the metal welding foot 4 and the lens 1, and can also prevent the lens 1 from separating from the metal welding foot 4.

[0041] The number of the metal welding feet 4 on a single lens 1 is multiple, and preferably, the multiple metal welding feet 4 on the same lens 1 are evenly distributed.

[0042] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. LED light emitting assembly, characterized in that: It includes a lens and a PCB board, wherein the top surface of the PCB board is provided with an LED lamp bead, the lens is arranged corresponding to the LED lamp bead, a metal welding foot is embedded in the lens, the lens is welded and fixed to the PCB board through the metal welding foot, the part of the metal welding foot embedded in the lens has a glue groove hole, and a partial area of ​​the lens fills the glue groove hole.

2. The LED lighting assembly according to claim 1, characterized in that: The metal welding foot comprises a welding plate portion exposed outside the lens, and the bottom surface of the welding plate portion is a welding plane.

3. The LED lighting assembly according to claim 2, characterized in that: The metal welding pins and the LED lamp beads are both welded and fixed to the PCB board through a surface mounting process.

4. The LED lighting assembly according to claim 2, characterized in that: The metal welding foot also includes an embedding portion, which is embedded in the lens. The glue-fastening slot is arranged on the embedding portion. The embedding portion and the welding plate portion are an integrated structure formed by integral processing.

5. The LED lighting assembly according to claim 4, characterized in that: The glue buckle slot is a notch arranged on the side of the embedded part.

6. The LED lighting assembly according to claim 5, characterized in that: The opposite side edges of the embedded part are respectively provided with the glue-locking slot holes, and the glue-locking slot holes located on the opposite side edges of the embedded part are arranged in a one-to-one correspondence.

7. The LED lighting assembly according to claim 4, characterized in that: The glue buckle slot hole is a blind hole or a through hole.

8. The LED lighting assembly according to claim 1, characterized in that: The number of the glue groove holes on the metal welding foot is one or more.

9. The LED lighting assembly according to claim 1, characterized in that: The number of the metal welding feet on a single lens is multiple.

10. The LED lighting assembly according to claim 9, characterized in that: The plurality of metal welding feet on the same lens are evenly distributed.

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