Seal-guarded surface mount LED light emitting diode

Abstract

The utility model relates to LED packaging technical field especially a sealed protection type patch type LED light emitting diode, including fixed end electrically connected piece, LED wafer sets up on fixed end electrically connected piece, and the fixed end electrically connected piece and the welding end electrically connected piece are embedded in the one side surface position of the encapsulant, and the window is seted up on the encapsulant, and the LED wafer is exposed in the window middle position, and the gold wire both ends are connected with LED wafer and welding end electrically connected piece electricity respectively, and the light -transmitting body is installed in the edge position of window, and with the encapsulant constitutes sealed cooperation, can effectively avoid the light flicker, the brightness attenuation, the local extinguishing etc. phenomenon, and the luminous performance is more stable. Meanwhile, the short circuit failure caused by the welding spot corrosion aggravation is eliminated, the risk that the LED module burns is reduced significantly, the service life is greatly prolonged, the maintenance replacement frequency is reduced, and the use cost of each application field is reduced.

Description

Technical Field

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

[0002] In the widespread application of modern electronic devices and lighting systems, surface-mount LEDs have become a core component in many fields such as display screens, landscape lighting, automotive lighting, and indoor lighting due to their significant advantages such as small size, low energy consumption, and high luminous efficiency. However, in actual use, insufficient sealing and protection performance remains a key bottleneck restricting their stability and service life.

[0003] In outdoor landscape lighting scenarios, surface-mount LEDs are constantly exposed to complex weather environments such as rain, snow, and fog. Water molecules can easily penetrate the LED module through the assembly gaps between the LED module and the outer casing, as well as through micro-slits at the pin solder joints. When moisture comes into contact with the solder joints of the LED module, it undergoes an electrochemical corrosion reaction with the metal plating (such as tin or silver) on the surface of the solder joint, forming loose corrosion products. These corrosion products not only increase the contact resistance of the solder joints, leading to poor electrical contact in the LED module, manifested as flickering, decreased brightness, or even partial blackout; if the corrosion worsens, it may also damage the insulation layer between the solder joints, causing short circuits, and in severe cases, directly burning out the entire LED module, significantly increasing maintenance costs and replacement frequency.

[0004] In summary, due to defects in the sealed protective structure design, existing surface-mount LEDs cannot effectively prevent moisture intrusion, leading to frequent solder joint corrosion problems, which in turn cause faults such as short circuits and poor electrical contact. This significantly shortens the lifespan of LED modules and brings many inconveniences and additional costs to various application fields. Utility Model Content

[0005] The purpose of this invention is to provide a sealed and protective surface-mount LED light-emitting diode, which aims to solve the problem of poor sealing in LED modules mentioned above, so as to improve the sealing performance of LED modules and ensure the service life of LED modules.

[0006] The technical solution adopted in this utility model is as follows:

[0007] A sealed and protected surface-mount LED light-emitting diode, comprising:

[0008] Fixed-end electrical connector;

[0009] LED chips are disposed on the fixed-end electrical connector piece;

[0010] Welded end electrical connector;

[0011] The package body has a fixed end electrical connector and a solder end electrical connector embedded on one side of the package body. The package body has a window, and the LED chip is exposed in the middle of the window.

[0012] The gold wire is electrically connected at both ends to the LED chip and the welding end electrical connection piece, respectively.

[0013] A light-transmitting element is installed at the edge of the window and forms a sealed fit with the encapsulation body.

[0014] This utility model also has the following technical features:

[0015] In one embodiment of this utility model, the fixed end electrical connector and the welding end electrical connector extend through the through hole on the package body. The extended ends of the fixed end electrical connector and the welding end electrical connector are provided with connecting pins. The connecting pins and the opening of the through hole form a sealing fit. A bottom cover is detachably provided below the package body. Two sets of wiring pins are provided on the bottom cover. The connecting pins are electrically connected to the two sets of wiring pins respectively.

[0016] In one embodiment of this utility model, the connecting pin is cylindrical in shape, and a sealing sleeve is provided on the outer wall of the connecting pin. The outer wall of the sealing sleeve and the opening of the through hole form abutment fit.

[0017] In one embodiment of this utility model, the two sets of wiring pins are provided with electrical plug holes, and the protruding end of the connecting pin and the electrical plug hole form a plug-in engagement.

[0018] In one embodiment of the present invention, an assembly protrusion is provided below the package body, and an assembly groove is provided circumferentially on the bottom cover. The assembly groove cooperates with the assembly protrusion, and the bottom cover and the package body are fixed together by fastening pins.

[0019] In one embodiment of the present invention, the edge of the window is provided with an annular groove, and an elastic sealing ring is provided in the annular groove. The light-transmitting body is shaped like a bowl and its edge is locked in the annular groove and abuts against the elastic sealing ring.

[0020] In one embodiment of this utility model, multiple sets of snap-fit ​​grooves are arranged circumferentially along the edge of the annular groove, and multiple sets of snap-fit ​​claws are correspondingly arranged on the edge of the light-transmitting body, with the snap-fit ​​claws snapping into the snap-fit ​​grooves.

[0021] In one embodiment of this utility model, four sets of snap-fit ​​grooves are arranged circumferentially along the edge of the annular groove, and four sets of snap-fit ​​claws are correspondingly arranged.

[0022] In one embodiment of the present invention, a fixing pin is provided on the snap-fit ​​claw, and a pin hole is provided at the bottom of the snap-fit ​​groove, and the fixing pin is inserted into the pin hole.

[0023] Compared with existing technologies, the beneficial effects of this invention are as follows: the encapsulation body embeds and fixes the fixed-end electrical connection piece and the soldering-end electrical connection piece, fundamentally reducing the assembly gap between the electrical connection piece and the outer shell in traditional LED modules, and significantly reducing the possibility of moisture intrusion through the connection gap. Furthermore, the sealed fit between the light-transmitting body and the encapsulation body at the window edge constructs a robust protective barrier for the core area where the LED chip and gold wire are located, effectively preventing the entry of substances prone to corrosion such as rain, snow, fog, and moisture. This double-sealed structure fundamentally solves the core problem of solder joint corrosion caused by moisture intrusion in existing surface-mount LEDs. Because the solder joint is effectively protected, problems such as increased contact resistance and poor electrical contact caused by corrosion are avoided. The electrical connection between the LED chip and the soldering-end electrical connection piece through the gold wire is stably maintained, ensuring smooth current transmission. This allows the LED light-emitting diode to effectively avoid phenomena such as light flickering, brightness decay, and partial blackout during operation, resulting in more stable luminous performance. At the same time, it eliminates short-circuit faults caused by accelerated corrosion of solder joints, significantly reduces the risk of LED module burnout, greatly extends its service life, reduces maintenance and replacement frequency, and lowers the cost of use in various application fields. Attached Figure Description

[0024] Figure 1 and Figure 2 These are schematic diagrams of the sealed and protected surface-mount LED light-emitting diode from two different perspectives in one embodiment of this utility model;

[0025] Figure 3 This is a plan view of a sealed and protected surface-mount LED light-emitting diode according to one embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of a sealed and protective surface-mount LED light-emitting diode after it has been removed from the light-transmitting body in one embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the package and connecting pins in a sealed and protective surface-mount LED light-emitting diode according to one embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the package structure in a sealed and protective surface-mount LED light-emitting diode according to one embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of the bottom cover and wiring pins in one embodiment of the present invention.

[0030] Explanation of icon numbers:

[0031] Fixed-end electrical connector 10;

[0032] LED chip 20;

[0033] 30mm welded end electrical connector;

[0034] Gold line 40;

[0035] Package body 50; window 51; through hole 52; annular groove 53; snap-fit ​​groove 531; mounting ring 54;

[0036] Light-transmitting body 60; card claw 61;

[0037] Connecting pin 70; sealing sleeve 71;

[0038] Bottom cover 80; wiring pins 81; electrical connector holes 811; assembly slots 82. Detailed Implementation

[0039] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0040] The illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the drawings only show the components related to this utility model and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0041] It should be noted that surface-mount LEDs are exposed to complex weather environments such as rain, snow, and fog for extended periods. Water molecules can easily penetrate the LED module through the assembly gaps between the LED module and the outer casing, as well as the micro-slits at the pin solder joints. When moisture comes into contact with the solder joints of the LED module, it undergoes an electrochemical corrosion reaction with the metal plating (such as tin or silver) on the surface of the solder joints, forming loose corrosion products. These corrosion products not only increase the contact resistance of the solder joints, leading to poor electrical contact in the LED module, manifested as flickering, decreased brightness, or even partial blackout; if the corrosion worsens, it may also damage the insulation layer between the solder joints, causing short circuits, and in severe cases, directly burning out the entire LED module, significantly increasing maintenance costs and replacement frequency. Furthermore, as the usage time extends, the gaps will continue to widen, causing a sharp decline in moisture resistance. Moisture continuously seeps into the module through gaps, accelerating the aging and damage of the solder joints, severely shortening the lifespan of the LED module, and bringing frequent replacement maintenance costs and safety hazards to practical applications. To address this, a sealed and protective surface-mount LED is proposed, comprising: a fixed-end electrical connector 10; an LED chip 20 disposed on the fixed-end electrical connector 10; a soldering-end electrical connector 30; a package 50, wherein the fixed-end electrical connector 10 and the soldering-end electrical connector 30 are embedded on one side of the package 50, and a window 51 is provided on the package 50, through which the LED chip 20 is exposed; a gold wire 40, with its two ends electrically connected to the LED chip 20 and the soldering-end electrical connector 30 respectively; and a light-transmitting element 60 installed at the edge of the window 51, forming a sealed fit with the package 50.

[0042] In one embodiment, see Figure 1 The main welding points of this LED module are concentrated at the connection points between the LED chip 20 and the fixed end electrical connector 10, as well as at the two ends of the gold wire 40 and the LED chip 20 and the welding end electrical connector 30. The light-transmitting body 60 and the edge of the window 51 form a sealed fit, which can effectively prevent external moisture from entering the window 51 and causing corrosion problems, thus ensuring the service life of the LED module.

[0043] In one embodiment, see Figure 5 and Figure 6To further enhance the sealing performance of the LED module, the fixed-end electrical connector 10 and the soldering-end electrical connector 30 extend through the perforation 52 on the package body 50. The extended ends of the fixed-end electrical connector 10 and the soldering-end electrical connector 30 are each provided with a connecting pin 70. The connecting pin 70 and the opening of the perforation 52 form a sealing fit. A bottom cover 80 is detachably provided below the package body 50. Two sets of wiring pins 81 are provided on the bottom cover 80. The connecting pin 70 is electrically connected to the two sets of wiring pins 81 respectively.

[0044] The aforementioned fixed-end electrical connector 10 and welded-end electrical connector 30 are embedded in the package 50. As the usage time increases, gaps will exist between the fixed-end electrical connector 10 and welded-end electrical connector 30 and the package 50. As a result, moisture will enter the window 51 through the gaps, causing corrosion problems. Therefore, the connecting pins 70 provided at the extended ends of the fixed-end electrical connector 10 and welded-end electrical connector 30 pass through the opening of the through hole 52, and the connecting pins 70 and the through hole 52 form a seal, thereby effectively preventing moisture from entering the window 51 and ensuring the reliability of the entire LED module seal.

[0045] In one embodiment, see Figure 5 The connecting pin 70 is cylindrical in shape, and a sealing sleeve 71 is fitted on the outer wall of the connecting pin 70. The outer wall of the sealing sleeve 71 and the opening of the through hole 52 form abutment fit.

[0046] After the bottom cover 80 is placed under the package body 50, the connecting pin 70 can be electrically connected to the wiring pin 81, and the sealing sleeve 71 on the outer wall of the connecting pin 70 can form abutment with the opening of the through hole 52, thereby ensuring the sealing of the through hole 52 and preventing moisture from entering the window 51.

[0047] In one embodiment, see Figure 5 , Figure 6 and Figure 7 The two sets of wiring pins 81 are provided with electrical plug holes 811, and the protruding end of the connecting pin 70 is engaged with the electrical plug hole 811.

[0048] After the bottom cover 80 is placed on the package body 50, the connecting pin 70 can be inserted into the electrical connection holes 811 on the two sets of wiring pins 81 respectively, ensuring the reliability of the electrical connection between the connecting pin 70 and the wiring pins 81.

[0049] In one embodiment, see Figure 6 and Figure 7To achieve the connection between the bottom cover 80 and the package body 50, an assembly protrusion 54 is provided on the lower part of the package body 50, and an assembly groove 82 is provided on the circumference of the bottom cover 80. The assembly groove 82 cooperates with the assembly protrusion 54, and the bottom 80 and the package body 50 are fixed together by fastening screws.

[0050] After the mating surfaces of the bottom cover 80 and the package body 50 are engaged by the assembly groove 82 and the assembly protrusion 54, they can be fixed together by fastening screws or by fixing adhesive.

[0051] In one embodiment, see Figure 4 To ensure a seal between the light-transmitting body 60 and the window 51 of the encapsulation body 50, an annular groove 53 is provided on the edge of the window 51, and an elastic sealing ring is provided in the annular groove 53. The light-transmitting body 60 is shaped like a bowl and its edge is locked in the annular groove 53 and abuts against the elastic sealing ring.

[0052] In one embodiment, the window 51 is circular, the annular groove 53 is opened along the edge of the window 51, and the light-transmitting body 60 and the encapsulation body 50 are sealed by an elastic sealing ring.

[0053] In one embodiment, a plurality of sets of snap-fit ​​grooves 531 are provided circumferentially along the edge of the annular groove 53, and a plurality of sets of snap-fit ​​claws 61 are provided correspondingly along the edge of the light-transmitting body 60, the snap-fit ​​claws 61 being snapped into the snap-fit ​​grooves 531.

[0054] In one embodiment, four sets of snap-fit ​​grooves 531 are arranged circumferentially along the edge of the annular groove 53, and four sets of snap-fit ​​claws 61 are arranged accordingly.

[0055] In one embodiment, a fixing pin is provided on the locking claw 61, and a pin hole is provided at the bottom of the locking groove 531, and the fixing pin is inserted into the pin hole.

[0056] In another embodiment, the bottom of the snap-fit ​​groove 531 is coated with fixing adhesive, and the snap-fit ​​claw 61 can be fixed by the fixing adhesive.

[0057] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0058] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sealed and protected surface-mount LED, characterized in that, include: Fixed end electrical connector (10); LED chip (20) is disposed on the fixed end electrical connector (10); Welded end electrical connector (30); The package (50) has a fixed end electrical connector (10) and a welding end electrical connector (30) embedded on one side of the package (50). The package (50) has a window (51) and the LED chip (20) is exposed in the middle of the window (51). The gold wire (40) is electrically connected at both ends to the LED chip (20) and the welding end electrical connector (30), respectively; A light-transmitting element (60) is installed at the edge of the window (51) and forms a sealed fit with the encapsulation body (50).

2. The sealed and protected surface-mount LED light-emitting diode according to claim 1, characterized in that: The fixed end electrical connector (10) and the welded end electrical connector (30) extend through the perforation (52) on the package body (50). The extended ends of the fixed end electrical connector (10) and the welded end electrical connector (30) are provided with connecting pins (70). The connecting pins (70) and the opening of the perforation (52) form a sealed fit. A bottom cover (80) is detachably provided below the package body (50). Two sets of wiring pins (81) are provided on the bottom cover (80). The connecting pins (70) are electrically connected to the two sets of wiring pins (81) respectively.

3. The sealed and protected surface-mount LED light-emitting diode according to claim 2, characterized in that: The connecting pin (70) is cylindrical in shape, and a sealing sleeve (71) is provided on the outer wall of the connecting pin (70). The outer wall of the sealing sleeve (71) and the opening of the perforation (52) form abutment fit.

4. The sealed and protected surface-mount LED light-emitting diode according to claim 3, characterized in that: The two sets of wiring pins (81) are provided with electrical plug holes (811), and the protruding end of the connecting pin (70) and the electrical plug hole (811) form a plug-in engagement.

5. The sealed and protected surface-mount LED light-emitting diode according to claim 2, characterized in that: The package body (50) is provided with an assembly protrusion (54) below it, and the bottom cover (80) is provided with an assembly groove (82) in the circumferential direction. The assembly groove (82) cooperates with the assembly protrusion (54), and the bottom cover (80) and the package body (50) are fixed together by fastening pins.

6. The sealed and protected surface-mount LED light-emitting diode according to claim 1, characterized in that: The window (51) has an annular groove (53) on its edge, and an elastic sealing ring is provided in the annular groove (53). The light-transmitting body (60) is shaped like a bowl and its edge is locked in the annular groove (53) and abuts against the elastic sealing ring.

7. The sealed and protected surface-mount LED light-emitting diode according to claim 6, characterized in that: Multiple sets of snap-fit ​​grooves (531) are arranged circumferentially along the edge of the annular groove (53), and multiple sets of snap-fit ​​claws (61) are arranged correspondingly on the edge of the light-transmitting body (60), and the snap-fit ​​claws (61) are snapped into the snap-fit ​​grooves (531).

8. The sealed and protected surface-mount LED light-emitting diode according to claim 7, characterized in that: The snap-fit ​​groove (531) is provided in four sets along the edge of the annular groove (53), and the snap-fit ​​claw (61) is provided in four sets accordingly.

9. The sealed and protected surface-mount LED light-emitting diode according to claim 7, characterized in that: The locking claw (61) is provided with a fixing pin, and the bottom of the locking groove (531) is provided with a pin hole, and the fixing pin is inserted into the pin hole.

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