Novel high-airtightness LED lamp bead

Abstract

The novel high-airtightness LED lamp bead comprises an insulating isolation belt, a plastic enclosure frame and two functional bonding pads, each functional bonding pad is provided with a functional area and a contact area which are connected, each contact area is located on the outer side of the corresponding functional area, the top face of each contact area is lower than the top face of the corresponding functional area so as to form a contact groove, and each contact groove is located in the corresponding functional area. The bottom surface of the contact groove is provided with at least one V-shaped groove, and the end parts of the two functional areas are provided with protruding parts protruding towards the inner side. The insulating isolation strip is located between the two functional bonding pads and connected with the two functional bonding pads respectively, the cross section of the insulating isolation strip is in an I shape, and the protruding part is embedded into the insulating isolation strip to form a [-shaped combination surface with the insulating isolation strip; the plastic enclosure frame encloses the insulating isolation strip and the two functional bonding pads, and the bottom of the plastic enclosure frame is filled with the contact groove. The LED lamp bead has the advantages of being good in structural stability, good in air tightness and long in service life.

Description

Technical Field

[0001] The utility model relates to the technical field of LED packaging, and particularly relates to a novel high-airtightness LED lamp bead. Background Art

[0002] As a new type of solid semiconductor device, LED lamp beads have been widely applied to various industries due to their advantages of small size, light weight, high luminous efficiency, energy conservation and environmental protection. In the application scenarios of LED lamp beads, water vapor or pollutants in the environment sometimes invade the interior of the LED lamp beads, resulting in a reduction in the stability and reliability of the LED lamp beads. Therefore, ensuring the airtightness of the LED lamp beads is an important condition for ensuring their stable performance and extending their service life.

[0003] The existing LED brackets mostly adopt metal plates that are stamped and formed, electroplated, and then injection molded into concave bowl cups by an injection molding machine. Due to the different material properties of the plastic material and the metal plate, the bonding property between the plastic material and the metal substrate is poor, and there will be tiny gaps. Water vapor or pollutants in the environment easily enter the interior of the LED lamp beads from the bonding surface between the plastic material and the metal substrate, thereby reducing the reliability and service life of the LED lamp beads and causing defects. Summary of the Utility Model

[0004] The technical problem solved by the utility model is to provide a novel high-airtightness LED lamp bead.

[0005] In order to solve the above technical problem, the technical solution adopted by the utility model is: a novel high-airtightness LED lamp bead, comprising:

[0006] Two functional pads, the functional pads have a connected functional area and a contact area, the contact area is located outside the functional area, the top surface of the contact area is lower than the top surface of the functional area to form a contact groove, at least one V-shaped groove is provided on the bottom surface of the contact groove, and the ends of the two functional areas both have convex portions protruding inward;

[0007] An insulating isolation belt, the insulating isolation belt is located between the two functional pads and is respectively connected to the two functional pads, the cross section of the insulating isolation belt is in an I shape, and the convex portion is embedded in the insulating isolation belt to form a C-shaped bonding surface with the insulating isolation belt;

[0008] A plastic enclosure, the plastic enclosure encloses the insulating isolation belt and the two functional pads, and the bottom of the plastic enclosure fills the contact groove.

[0009] In one embodiment, the number of the V-shaped grooves on the bottom surface of the contact groove is multiple.

[0010] In one embodiment, the multiple V-shaped grooves on the bottom surface of the contact groove are close to each other to form a serrated structure.

[0011] In one embodiment, the wall surface of the contact groove on the side close to the functional area is an inclined surface, and the plastic enclosure is connected to the inclined surface.

[0012] In one embodiment, the plastic enclosure includes a connected base portion and a surrounding wall portion. The bottom end of the surrounding wall portion protrudes inward to form the base portion, and the base portion fills the contact groove.

[0013] In one embodiment, the top surface of the base portion is coplanar with the top surface of the functional area.

[0014] In one embodiment, the top surface of the insulating isolation strip is coplanar with the top surface of the functional area.

[0015] In one embodiment, the bottom surface of the insulating isolation strip is coplanar with the bottom surface of the functional area.

[0016] In one embodiment, it further includes an LED chip. The LED chip is fixedly installed on one of the functional pads. The positive electrode pin of the LED chip is electrically connected to the functional area of one functional pad, and the negative electrode pin of the LED chip is electrically connected to the functional area of the other functional pad.

[0017] The beneficial effects of the present utility model are as follows: In the functional pad of this LED lamp bead, the contact area is set lower than the functional area, and a contact groove is formed in the upper part of the contact area. Several V-shaped grooves are provided on the bottom surface of the contact groove, which greatly extends the path for external water vapor and dust to invade the interior of the LED lamp bead from the outside of the plastic enclosure, increases the difficulty of external water vapor and dust invading the interior of the LED lamp bead from the outside of the plastic enclosure, and effectively improves the bonding force between the plastic enclosure and the functional pad, thereby improving the structural stability of the LED lamp bead; Similarly, the insulating isolation strip with an I-shaped cross-section extends the path for external water vapor and dust to invade the interior of the LED lamp bead from the bottom side of the functional pad, increases the difficulty of external water vapor and dust invading the interior of the LED lamp bead from the bottom side of the functional pad and the bonding force between the insulating isolation strip and the functional pad. It can be seen that this LED lamp bead has the advantages of good structural stability, good airtightness, and long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0019] Figure 1 It is a cross-sectional view of a novel high-airtightness LED lamp bead according to Embodiment 1 of the present utility model.

[0020] Description of the reference numerals in the drawings:

[0021] 1. Insulating isolation tape

[0022] 2. Plastic enclosure; 21. Base part; 22. Enclosing wall part

[0023] 3. Functional pad; 31. Functional area; 311. Protruding part; 32. Contact area; 321. V-shaped groove; 33. Inclined plane

[0024] 4. LED chip Specific implementation manners

[0025] The realization of the object, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings.

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0027] It should be noted that if there are directional indications such as up, down, left, right, front, back,... in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture as shown in the drawings. If the specific posture changes, the directional indications will also change accordingly.

[0028] In addition, if there are descriptions such as "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features.

[0029] In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "and / or" as an example, it includes the solution, or the solution, or the solution that satisfies both simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art 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 the present utility model.

[0030] In this application, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] Embodiment 1

[0032] Please refer to Figure 1 , Embodiment 1 of the present utility model is: a novel high-airtight LED lamp bead, including an insulating isolation strip 1, a plastic frame 2 and two functional pads 3. The functional pad 3 has a connected functional area 31 and a contact area 32. The contact area 32 is located outside the functional area 31. The top surface of the contact area 32 is lower than the top surface of the functional area 31 to form a contact groove. At least one V-shaped groove 321 is provided on the bottom surface of the contact groove. Both ends of the two functional areas 31 have convex portions 311 protruding inward; the insulating isolation strip 1 is located between the two functional pads 3 and is respectively connected to the two functional pads 3. The cross-section of the insulating isolation strip 1 is in an I shape. The convex portion 311 is embedded in the insulating isolation strip 1 to form a C-shaped joint surface with the insulating isolation strip 1; the plastic frame 2 encloses the insulating isolation strip 1 and the two functional pads 3, and the bottom of the plastic frame 2 fills the contact groove.

[0033] The plastic frame 2 and the functional pad 3 can be formed into an integral structure by an insert injection molding process. The material of the insulating isolation strip 1 is plastic, and the insulating isolation strip 1 can be injection-molded and connected to the functional pad 3.

[0034] The novel high-airtight LED lamp bead further includes an LED chip 4. The LED chip 4 is fixedly installed on one of the functional pads 3. The positive electrode pin of the LED chip 4 is electrically connected to the functional area 31 of one functional pad 3, and the negative electrode pin of the LED chip 4 is electrically connected to the functional area 31 of the other functional pad 3.

[0035] Preferably, the insulating isolation strip 1 is combined with the inner end face of the functional area 31. That is to say, the insulating isolation strip 1 and the functional area 31 can form a concave joint surface, which can improve the airtightness of the LED lamp bead to a greater extent.

[0036] In a specific LED lamp bead product, the number of the V-shaped grooves 321 on the bottom surface of the contact groove can be multiple. Optionally, the multiple V-shaped grooves 321 on the bottom surface of the contact groove are close to each other to form a serrated structure. Arranging multiple V-shaped grooves 321 can improve the airtightness and structural stability of the LED lamp bead to a greater extent.

[0037] Preferably, the wall surface of the contact groove close to the functional area 31 is an inclined surface 33, and the plastic enclosure 2 is connected to the inclined surface 33. The arrangement of the inclined surface 33 can further extend the intrusion path of water vapor and dust.

[0038] Specifically, the plastic enclosure 2 includes a connected base portion 21 and a surrounding wall portion 22. The bottom end of the surrounding wall portion 22 protrudes inward to form the base portion 21, and the base portion 21 fills the contact groove.

[0039] In this embodiment, the top surface of the base portion 21 is coplanar with the top surface of the functional area 31, the top surface of the insulating isolation strip 1 is coplanar with the top surface of the functional area 31, and the bottom surface of the insulating isolation strip 1 is coplanar with the bottom surface of the functional area 31.

[0040] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made by using the description and drawings of the present invention under the inventive concept of the present invention, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A new type of high airtightness LED lamp bead, characterized by: include Two functional pads, each having a connected functional area and a contact area, wherein the contact area is located outside the functional area, the top surface of the contact area is arranged lower than the top surface of the functional area to form a contact groove, the bottom surface of the contact groove is provided with at least one V-shaped groove, and the ends of the two functional areas both have protrusions protruding inwards; An insulating isolation belt, the insulating isolation belt is located between the two functional pads and respectively connects the two functional pads, the cross section of the insulating isolation belt is I-shaped, and the protrusion is embedded in the insulating isolation belt to form a U-shaped bonding surface with the insulating isolation belt; A plastic frame encloses the insulating isolation zone and two functional pads, and the bottom of the plastic frame is filled with the contact groove.

2. The novel high airtightness LED lamp bead according to claim 1 is characterized in that: The number of the V-shaped grooves on the bottom surface of the contact groove is multiple.

3. The novel high airtight LED lamp bead according to claim 2 is characterized in that: The multiple V-shaped grooves on the bottom surface of the contact groove are close to each other to form a sawtooth structure.

4. The novel high airtight LED lamp bead according to claim 1 is characterized in that: The wall surface of the contact groove close to the functional area is an inclined surface, and the plastic surrounding frame is connected to the inclined surface.

5. The novel high airtight LED lamp bead according to claim 1 is characterized in that: The plastic surrounding frame comprises a base portion and a surrounding wall portion which are connected to each other. The bottom end of the surrounding wall portion protrudes inward to form the base portion, and the base portion fills the contact groove.

6. The novel high airtight LED lamp bead according to claim 5 is characterized in that: The top surface of the base portion is coplanar with the top surface of the functional area.

7. The novel high airtight LED lamp bead according to claim 1 is characterized in that: The top surface of the insulating isolation zone is coplanar with the top surface of the functional area.

8. The novel high airtight LED lamp bead according to claim 1 is characterized in that: The bottom surface of the insulating isolation zone is coplanar with the bottom surface of the functional area.

9. The novel high airtight LED lamp bead according to claim 1 is characterized in that: It also includes an LED chip, which is fixedly mounted on one of the functional pads, wherein the positive pin of the LED chip is electrically connected to the functional area of ​​one functional pad, and the negative pin of the LED chip is electrically connected to the functional area of ​​another functional pad.

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