SMD LED lamp

Abstract

The utility model relates to the technical field of LED lamps, in particular to an SMD LED lamp. Comprising a shell, a lens, a PCB, a light source body and an electronic element, the light source body and the electronic element are welded to the PCB, the bottom of the lens extends downwards to be provided with a clamping base, a plurality of limiting convex clamping points are arranged on the inner wall of the clamping base, and the bottom of the clamping base is fastened in a limiting concave ring groove of the shell in a tight or interference fit mode. After the PCB is arranged in the limiting protruding clamping points to be clamped and fixed, potting glue is injected from the containing cavity in the bottom of the shell and the gaps between the lens, the PCB and the electronic element, and the glue can flow into the containing cavity of the shell when the potting glue is injected. As the potting glue shrinks when being cured, the limiting concave ring groove of the shell, the annular boss of the lens, the electronic element and the PCB are further tightly wrapped and connected into a whole, the sealing performance and the waterproof performance are better, the overall quality of the SMD LED lamp is improved, and the service life is longer.

Description

Technical Field

[0001] This utility model relates to the field of LED lighting technology, and in particular to a surface-mount LED light. Background Technology

[0002] LED lights are solid-state semiconductor devices that directly convert electrical energy into visible light. They are small, energy-efficient, environmentally friendly, and have a long lifespan, making them a new generation of green light sources. They are widely used in various places such as commercial, residential, office, and entertainment venues. However, when used outdoors, the complex outdoor environment can cause problems over time. The difference in linear expansion coefficients between the waterproof potting compound and the housing material leads to thermal expansion and contraction, causing the waterproof compound to detach from the housing and crack. This allows moisture to seep into the LED chips and even accumulate inside the housing, severely degrading the quality of the LED light, even causing it to fail completely, rendering it unusable, and reducing its stability. Utility Model Content

[0003] The purpose of this utility model is to provide a surface-mount LED light to solve the problems of existing surface-mount LED lights that, after being outdoors for a long time, will separate due to the difference in linear expansion coefficients between the waterproof potting adhesive and the shell material, and the resulting decrease in waterproof performance and poor waterproof effect due to the curing shrinkage and aging of the adhesive.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] This utility model proposes a surface-mount LED lamp, including a housing, a lens, a PCB circuit board, a light source body soldered to the PCB circuit board, wires, and electronic components. One end of the housing has a through hole, and the other end is open to form a receiving cavity. The inner wall of the receiving cavity of the housing has a limiting recessed groove. The bottom of the lens extends downward to form a retaining seat. The inner wall of the retaining seat has several limiting protrusions. The bottom of the retaining seat is fastened to the limiting recessed groove by a tight or interference fit. The top of the lens is exposed outside the through hole. After the PCB circuit board is embedded in the limiting protrusions and fixed, potting compound is injected from the gap between the receiving cavity at the bottom of the housing and the lens, the PCB circuit board, and the electronic components. After curing, the potting compound seamlessly fits and is firmly fixed to the lens, the PCB circuit board, the electronic components, and the wires. The light source body is disposed in the space formed between the inner cavity of the lens and the PCB circuit board, and the potting compound tightly wraps and fixes the lens, the PCB circuit board, and the wires.

[0006] In a further embodiment of this utility model, the outer surface of the bottom of the mounting base is provided with an annular boss for engaging with the limiting groove, and the lens is embedded in the receiving cavity of the housing and secured by the engagement of the annular boss and the limiting groove.

[0007] In a further embodiment of this utility model, the card holder includes a plurality of positioning posts and a base, the positioning posts being spaced apart on the base, and the limiting protrusions being located on the positioning posts.

[0008] In a further embodiment of this utility model, one end of the wire is soldered to the PCB circuit board, and the other end is exposed outside the housing.

[0009] As a further embodiment of this utility model, the outer surface of the housing is provided with one or more elastic fixing slots for fixing the light source body to the assembly plate.

[0010] As a further embodiment of this utility model, the electronic component is one or any combination of resistors, capacitors, inductors, transistors, and IC integrated circuits.

[0011] In a further embodiment of this utility model, the light source body is a surface-mount LED bead or a COB light source.

[0012] As a further embodiment of this utility model, the potting compound is made of UV-curable adhesive, epoxy resin adhesive, polyurethane (PU) adhesive, or silicone.

[0013] As a further embodiment of this utility model, the lens is made of plastic or silicone; the housing is made of plastic, silicone, or rubber.

[0014] In a further embodiment of this utility model, the lens and the mounting base are integrally formed.

[0015] In this surface mount LED light, a retaining seat is provided by extending downward from the bottom of the lens. The inner wall of the retaining seat has several limiting protrusions for tight engagement with the PCB circuit board. The bottom of the retaining seat is fastened to the limiting annular groove of the housing by a tight or interference fit. After the PCB circuit board is fixed in place by the limiting protrusions, the light-emitting surface of the light source body is tightly attached to the receiving cavity of the lens. During potting, the light-emitting surface of the light source body will not be waterproofed by the glue, saving costs. Encapsulating colloid is injected into the gap between the bottom cavity and the lens, the PCB circuit board, and the electronic components. After curing, the encapsulating colloid fits seamlessly and is firmly bonded to the lens, the PCB circuit board, and the electronic components. When the encapsulating colloid is injected, it flows into the cavity of the housing. As the encapsulating colloid cures, it shrinks, further tightly wrapping and connecting the housing's limiting groove, the lens's annular protrusion, the electronic components, and the PCB circuit board, thereby improving the sealing and waterproof performance, enhancing the overall quality of the surface mount LED light, and extending its service life. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the surface mount LED lamp provided in this embodiment of the utility model.

[0017] Figure 2 This is a cross-sectional view of the surface-mount LED lamp provided in this embodiment of the present invention.

[0018] Figure 3 This is a cross-sectional view of the lens of the SMD LED lamp provided in this embodiment of the present invention. Detailed Implementation

[0019] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0020] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0021] Although terms such as "first," "second," etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the elements, components, regions, layers, or segments discussed below may be referred to as second elements, components, regions, layers, or segments without departing from the teachings of the exemplary embodiments.

[0022] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "rear," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0023] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0024] To illustrate the technical solution described in this utility model, specific embodiments are described below.

[0025] Please see Figures 1 to 3As shown, the surface-mount LED lamp 100 provided in this embodiment includes a housing 10, a lens 20, a PCB circuit board 30, a light source body 40 soldered to the PCB circuit board, wires 41, and electronic components (not shown). One end of the housing 10 is provided with a through hole 11 for the lens 20 to pass through, and the other end is open to form a receiving cavity 12. The inner wall of the receiving cavity 12 of the housing is provided with a limiting recessed annular groove 13. The bottom of the lens 20 extends downward to provide a retaining seat 21. The inner wall of the retaining seat 21 is provided with a plurality of limiting protrusions 22 for tightly fitting with the PCB circuit board 30. The bottom of the retaining seat 21 is fastened to the limiting recessed annular groove 13 by a tight or interference fit. The lens... The top of lens 20 is exposed through the through hole 11. After the PCB circuit board 30 is fixed by the limiting protrusion 22, the edge of the surface of the light source body 40 mounted on the PCB circuit board 30 is in close contact with the lower surface of the receiving cavity of lens 20. The light source body 40 is located in the receiving cavity of lens 20. When potting glue is applied, there will be no glue on the light-emitting surface of the light source body 40, which will cause color difference. Potting glue (not shown in the figure) is injected from the gap between the receiving cavity at the bottom of the housing 10 and the lens 20, the PCB circuit board 30 and the electronic components. After curing, the potting glue fits seamlessly and is firmly fixed to the lens 20, the PCB circuit board 30 and the electronic components and the wires 41. The light source body 40 is disposed in the space formed between the inner cavity of lens 20 and the PCB circuit board, and the potting glue tightly wraps and fixes the lens, the PCB circuit board and the wires 41. When the potting adhesive is injected, the adhesive will flow into the receiving cavity 11 of the housing. As the potting adhesive cures, it will shrink, further tightly wrapping and connecting the limiting groove 13 of the housing, the annular boss 23 of the lens, the electronic components and the PCB circuit board into one, thereby improving the sealing and waterproof performance, improving the overall quality of the surface mount LED light and extending its service life.

[0026] In this embodiment of the utility model, the outer surface of the bottom of the mounting base 21 is provided with an annular boss 23 for cooperating with the limiting annular groove 13. The lens 20 is built into the receiving cavity 12 of the housing and is locked and fixed by the annular boss 23 and the limiting annular groove 13 in a tight or interference fit.

[0027] In this embodiment of the utility model, the card holder 21 includes a plurality of positioning posts 24 and a base 25, the positioning posts 24 being spaced apart on the base 25, and the limiting protrusions 22 being disposed on the positioning posts 24.

[0028] In this embodiment of the utility model, one end of the wire 41 is soldered to the PCB circuit board 30, and the other end is exposed outside the housing 10. The wire 41 is an electrode wire, and the number of wires 41 is 2 to 8.

[0029] In this embodiment of the invention, the outer surface of the housing 10 is provided with one or more elastic fixing slots 14 for fixing the light source body 40 to the assembly plate. When assembling a surface-mount LED lamp onto the product, the elastic fixing slot 14 allows the surface-mount LED lamp to pass through the through-hole of the assembly plate by pressing the elastic fixing slot, and the surface-mount LED lamp is secured to the assembly plate by the elastic fixing slot of the housing. When it is necessary to remove the surface-mount LED lamp, the surface-mount LED lamp is disengaged from the through-hole of the assembly plate by pressing the elastic fixing slot.

[0030] In this embodiment of the invention, the electronic component (not shown in the figure) is one or any combination of resistor, capacitor, inductor, transistor and IC integrated circuit.

[0031] In this embodiment of the utility model, the light source body 40 is a surface-mount LED bead or a COB light source. Surface-mount LED beads have better heat dissipation, less light decay, and superior waterproof performance.

[0032] In this embodiment of the utility model, the potting colloid (not shown in the figure) is made of UV-curable adhesive, epoxy resin adhesive, polyurethane (PU) adhesive, or silicone.

[0033] As a further embodiment of this utility model, the lens 20 is made of plastic or silicone; the housing 10 is made of plastic, silicone or rubber, which can significantly reduce costs.

[0034] In this embodiment of the utility model, the lens 20 and the mounting base 21 are integrally formed.

[0035] The assembly process of a surface-mount LED lamp provided in this embodiment of the utility model is as follows:

[0036] First, the lens holder is installed and fixed into the housing cavity through the through-hole. Then, the PCB circuit board with soldered wires and surface-mount LEDs and electronic components is inserted into the limiting protrusions of the lens holder and secured. Next, potting compound is slowly injected from the inner wall of the bottom of the housing. The compound is injected along the inner wall of the housing and into the gaps between the lens and the PCB circuit board, covering the lens, PCB circuit board, electronic components, and wires. After the compound cures, it tightly wraps around the lens, PCB circuit board, electronic components, and wires as a whole. The curing and shrinkage of the compound ensures a tight seal, resulting in excellent waterproof performance. Even if the compound separates from the housing over time, the waterproof performance remains unaffected.

[0037] The surface-mount LED provided by this invention has better sealing performance, improved waterproof performance, significantly improved production and assembly efficiency, and reduced production costs.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0039] Finally, it should be noted that the preferred embodiments of this utility model disclosed above are only for illustrating this utility model. The preferred embodiments do not describe all details exhaustively, nor do they limit the utility model to the specific implementations described. Obviously, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize this utility model. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A surface-mount LED light, characterized in that: The device includes a housing, a lens, a PCB circuit board, a light source body soldered to the PCB circuit board, wires, and electronic components. One end of the housing has a through hole, and the other end is open to form a receiving cavity. The inner wall of the receiving cavity of the housing has a limiting recessed groove. The bottom of the lens extends downward to form a retaining seat. The inner wall of the retaining seat has several limiting protrusions. The bottom of the retaining seat is fastened to the limiting recessed groove by a tight or interference fit. The top of the lens is exposed outside the through hole. After the PCB circuit board is built into the limiting protrusions and fixed, potting compound is injected from the gap between the receiving cavity at the bottom of the housing and the lens, the PCB circuit board, and the electronic components. After curing, the potting compound seamlessly fits and is firmly fixed to the lens, the PCB circuit board, the electronic components, and the wires. The light source body is disposed in the space formed between the inner cavity of the lens and the PCB circuit board, and the potting compound tightly wraps and fixes the lens, the PCB circuit board, and the wires.

2. The surface-mount LED lamp as described in claim 1, characterized in that, The outer surface of the bottom of the mounting base is provided with an annular boss for engaging with the limiting groove. The lens is built into the receiving cavity of the housing and is fixed by the engagement of the annular boss and the limiting groove.

3. The surface-mount LED lamp as described in claim 1, characterized in that, The card holder includes a plurality of positioning posts and a base, the positioning posts being spaced apart on the base, and the limiting protrusions being located on the positioning posts.

4. The surface-mount LED lamp as described in claim 1, characterized in that, One end of the wire is soldered to the PCB circuit board, and the other end is exposed outside the housing.

5. The surface-mount LED lamp as described in claim 1, characterized in that, The outer surface of the housing is provided with one or more elastic fixing slots for fixing the light source body to the assembly plate.

6. The surface-mount LED lamp as described in claim 1, characterized in that, The electronic components are one or any combination of resistors, capacitors, inductors, transistors, and IC integrated circuits.

7. The surface-mount LED lamp as described in claim 1, characterized in that, The light source body is a surface-mount LED bead or a COB light source.

8. The surface-mount LED lamp as described in claim 1, characterized in that, The potting compound is made of UV-curable adhesive, epoxy resin adhesive, polyurethane (PU) adhesive, or silicone.

9. The surface-mount LED lamp as described in claim 1, characterized in that, The lens is made of plastic or silicone; the housing is made of plastic, silicone, or rubber.

10. The surface-mount LED lamp as described in claim 1, characterized in that, The lens and the mounting base are integrally formed.

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