CN217641388U

CN217641388U - Anti-permeation LED support structure

Info

Publication number: CN217641388U
Application number: CN202221890307.XU
Authority: CN
Inventors: 陶燕兵; 盛刚; 刘跃斌
Original assignee: Changzhou Amicc Optoelectronics Technology Co ltd
Current assignee: Changzhou Amicc Optoelectronics Technology Co ltd
Priority date: 2022-07-20
Filing date: 2022-07-20
Publication date: 2022-10-21
Anticipated expiration: 2032-07-20

Abstract

The utility model discloses a prevention of seepage LED support, including first metal sheet, second metal sheet and box dam, first metal sheet and second metal sheet interval set up, the box dam sets up around the periphery of first metal sheet and second metal sheet, one side that first metal sheet is close to the second metal sheet is equipped with first recess, one side that the second metal sheet is close to first metal sheet is equipped with the second recess, it has umbelliform plastic to fill the shaping between first metal sheet and the second metal sheet, first recess and second recess are filled in the top cover of umbelliform plastic. The utility model discloses under the prerequisite that does not change the metal sheet clearance, through increaseing the plastic volume of filling between the metal sheet for pressure fully acts on the plastic, lets the plastic inseparabler on adhering to the metal sheet, and through the design to the cavity structure of moulding plastics, the infiltration route of steam has been prolonged simultaneously, has improved the gas tightness and the life of product.

Description

LED supporting structure that prevention of seepage was passed through

Technical Field

The utility model belongs to the technical field of luminous chip encapsulation, in particular to LED supporting structure that prevention of seepage passed through.

Background

The LED support is an important component of the LED lamp bead and is a base of the LED lamp bead. The conventional LED support consists of two independent metal blocks and plastic, wherein the plastic surrounds a cavity above the metal blocks through injection molding and is used for placing a light-emitting chip and welding positive and negative leads. The two independent metal blocks are filled with plastic to insulate the positive and negative circuits, and the structure is simple and durable.

However, as the operating scenes of the LED increase, the quality requirements of the LED are higher. The most important point is that the LED support has high air tightness to prevent water vapor from penetrating and damaging the internal light-emitting chip. However, the conventional LED support is composed of a metal block and plastic, the two materials have poor bondability, and water vapor easily permeates through the joint between the metal block and the plastic to damage the internal light emitting chip. Although there is an improvement by machining the structural shape on the metal block, the improvement is not significant.

Disclose a LED prevention of seepage support as patent CN201520904861.2, set up first prevention of seepage face, second prevention of seepage face, third prevention of seepage face, prolonged steam infiltration's route, play certain effect to improving the gas tightness. But the metal and the plastic itself cannot be bonded to each other. Therefore, when plastic is injection molded, the plastic can be pressed and adhered to the metal surface only by strong pressure of the injection molding machine. But because LED lamp pearl is more and more miniaturized, the clearance between its metal block is very little, usually only 0.3mm, and the plastic mobility is relatively poor when moulding plastics, hardly adheres to on the metal surface through powerful pressure in less space to lead to the gas tightness relatively poor, steam still can flow into inside through the space between metal and the plastic, damage luminescent chip, thereby reduced the quality of LED lamp pearl.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a LED supporting structure that prevention of seepage was passed through under the prerequisite that does not change the metal sheet clearance, through increaseing the plastic volume of packing between the metal sheet for pressure fully acts on the plastic, lets the plastic inseparabler on adhering to the metal sheet, and through the design to the cavity structure of moulding plastics, the infiltration route of steam has been prolonged simultaneously, has improved the gas tightness and the life of product.

The utility model has the following concrete technical scheme:

the utility model provides a prevention of seepage LED support that passes through, includes first metal sheet, second metal sheet and box dam, first metal sheet and second metal sheet interval set up, the box dam sets up around the periphery of first metal sheet and second metal sheet, one side that first metal sheet is close to the second metal sheet is equipped with first recess, one side that the second metal sheet is close to first metal sheet is equipped with the second recess, it has umbelliform plastic to fill the shaping between first metal sheet and the second metal sheet, first recess and second recess are filled in the top cover of umbelliform plastic.

Preferably, the umbrella-shaped plastic comprises an umbrella handle part and an umbrella face part which are integrally formed, wherein the umbrella handle part is filled in a gap between the first metal plate and the second metal plate, the bottom surface of the umbrella handle part is flush with the bottom surfaces of the first metal plate and the second metal plate, and the umbrella face part is positioned on the upper surfaces of the first metal plate and the second metal plate and covers the first groove and the second groove.

Preferably, the handle of the umbrella is of an inverted "T" configuration.

Preferably, the top surface of the umbrella face part is of a cambered surface structure.

Preferably, the top surface of the umbrella face part is of a semicircular face structure.

Preferably, the gap between the first metal plate and the second metal plate is 0.1-10mm.

Preferably, the depth of the first groove and the second groove is 0.01-0.5mm.

Has the advantages that: the utility model discloses a prevention of seepage LED supporting structure who passes through has following advantage:

(1) The utility model discloses a to the design of the cavity structure of moulding plastics, prolonged the infiltration route of steam, improved the gas tightness and the life of product.

(2) The utility model discloses in, because there is the protruding structure of umbrella face portion in the juncture of anodal and negative pole, can block that the conducting resin is excessive, avoid switching on the bad phenomenon of positive negative pole metal blocking formation short circuit.

(3) In the utility model, the umbrella-shaped structure increases the surface area of the plastic, thereby improving the associativity of the encapsulation glue.

(4) The utility model discloses in, the umbrella-shaped structure plastic covers the recess and has further strengthened the stable form of positive negative pole metal sheet, is difficult for receiving the damaged division of external force, guarantees that mutually independent first metal sheet and second metal sheet are firm not droing.

Drawings

Fig. 1 is a schematic front view of the step S1;

FIG. 2 is a schematic cross-sectional view of step S1;

fig. 3 is a schematic front view of the step S2;

FIG. 4 is a schematic cross-sectional view of step S2;

FIG. 5 is a schematic front view of the step S3;

FIG. 6 is a schematic cross-sectional view of step S3;

fig. 7 is a schematic front view of the step S4;

FIG. 8 is a schematic cross-sectional view of step S4;

fig. 9 is a schematic view of the overall structure in step S5;

in the figure: the LED packaging structure comprises a first metal plate 1, a first groove 1-1, a die bond adhesive 1-2, a second metal plate 2, a second groove 2-1, a dam 3, umbrella-shaped plastic 4, an umbrella handle part 4-1, an umbrella cover part 4-2, a gap 5, a light emitting chip 6, an anode wire 7-1, a cathode wire 7-2 and a packaging adhesive 8.

Detailed Description

The present invention is described in detail with reference to the accompanying drawings, which are not intended to limit the scope of the present invention.

Example 1

The utility model provides a LED support of prevention of seepage, includes first metal sheet 1, second metal sheet 2, box dam 3 and umbelliform plastic 4, wherein, first metal sheet 1 and second metal sheet 2 interval set up, and both clearance 5 is 0.3mm, box dam 3 sets up around the periphery of first metal sheet 1 and second metal sheet 2, and one side that first metal sheet 1 is close to second metal sheet 2 is equipped with first recess 1-1, one side that second metal sheet 2 is close to first metal sheet 1 is equipped with second recess 2-1, and the degree of depth of first recess 1-1 and second recess 2-1 is 0.02mm. Umbrella-shaped plastic 4 is filled and formed between the first metal plate 1 and the second metal plate 2, the umbrella-shaped plastic 4 comprises an umbrella handle part 4-1 and an umbrella cover part 4-2 which are integrally formed, the umbrella handle part 4-1 is of an inverted T-shaped structure, the umbrella handle part 4-1 is filled in a gap 5 between the first metal plate 1 and the second metal plate 2, the bottom surface of the umbrella handle part 4-1 is flush with the bottom surfaces of the first metal plate 1 and the second metal plate 2, the top surface of the umbrella handle part 4-1 is integrally formed with the umbrella cover part 4-2, the umbrella cover is of a cambered surface structure, and the umbrella cover part 4-2 is located on the upper surfaces of the first metal plate 1 and the second metal plate 2 and covers the first groove 1-1 and the second groove 2-1.

In example 1, the first metal plate 1 is a positive electrode, and the second metal plate 2 is a negative electrode.

The LED packaging body is manufactured by adopting the anti-seepage LED bracket in the embodiment 1, and the specific preparation steps are as follows:

s1, as shown in figures 1 and 2, designing a metal part of an LED support, wherein a gap 5 between a first metal plate 1 and a second metal plate 2 is 0.3mm, the first metal plate 1 is a positive electrode, the second metal plate 2 is a negative electrode, then stamping at the adjacent junction of the positive electrode and the negative electrode of the first metal plate 1 and the second metal plate 2 by using a die, so that the metal extends towards the middle of the positive electrode and the negative electrode, stamping by using the die, respectively stamping a first groove 1-1 and a second groove 2-1 at the extended part, and the depth of the first groove 1-1 and the second groove 2-1 is 0.02mm;

s2, as shown in figures 3 and 4, designing a support plastic part in an injection molding mode, designing a surrounding dam 3 around a first metal plate 1 and a second metal plate 2 as a reflecting wall, and designing umbrella-shaped plastic between the first metal plate 1 and the second metal plate 2, wherein the upper half part of the umbrella-shaped plastic 4, namely an umbrella-shaped surface part 4-2 is of a semicircular structure, the diameter of the semicircle is larger than the gap between the first metal plate 1 and the second metal plate 2, the semicircle can be covered and filled in a first groove 1-1 and a second groove 2-1, and the lower half part of the umbrella-shaped plastic 4, namely the bottom surface of an umbrella handle part 4-1, is flush with the lower surfaces of a first metal and a second metal 2;

s3, as shown in figures 5 and 6, in the prepared LED support, 1-2 parts of solid crystal glue are dotted on the first metal plate 1, the solid crystal glue can be made of insulating glue made of silicon materials or epoxy materials, or silver glue, the light-emitting chip 6 is fixed on the solid crystal glue 1-2, and then the light-emitting chip is sent into an oven to be baked and cured for 2 hours, wherein the curing temperature is 150 ℃;

and S4, welding positive and negative leads on the light-emitting chip 6, wherein the positive lead 7-1 connects the electrode of the light-emitting chip 6 to the first metal plate 1, as shown in figures 7 and 8. The other electrode of the light-emitting chip 6 is welded on the second metal plate 2 across the umbrella-shaped plastic 4 by the cathode lead 7-2;

s5, as shown in figure 9, filling packaging glue 8 into the LED bracket welded with the wires, wherein the packaging glue 8 can be made of silicon or epoxy, the packaging glue 8 is filled and sealed on the upper surface of the dam 3 of the LED bracket to be flush, and the LED bracket is sent into an oven to be baked and cured;

and S6, finally, testing and packaging the LED support to form a new LED packaging body, as shown in FIG. 9.

The above description is only the description of the present invention, and is the preferred embodiment of the present invention. It should be noted that, as a person skilled in the art can readily appreciate from the disclosure of the present invention, numerous modifications and decorations can be made.

Claims

1. The utility model provides a LED support that prevention of seepage was passed through, its characterized in that includes first metal sheet, second metal sheet and box dam, and first metal sheet and second metal sheet interval set up, the box dam sets up around the periphery of first metal sheet and second metal sheet, one side that first metal sheet is close to the second metal sheet is equipped with first recess, one side that the second metal sheet is close to first metal sheet is equipped with the second recess, it has umbelliform plastic to fill the shaping between first metal sheet and the second metal sheet, first recess and second recess are filled in the top cover of umbelliform plastic.

2. The impermeable LED support according to claim 1, wherein the umbrella-shaped plastic comprises a handle part and a face part, wherein the handle part is integrally formed with the gap between the first metal plate and the second metal plate, the bottom surface of the handle part is flush with the bottom surfaces of the first metal plate and the second metal plate, and the face part is located on the upper surfaces of the first metal plate and the second metal plate and covers the first groove and the second groove.

3. The impermeable LED support according to claim 2, wherein the handle portion of the umbrella is an inverted "T" shaped structure.

4. The LED barrier support according to claim 2, wherein the top surface of said umbrella face portion is a curved surface.

5. The LED barrier according to claim 4, wherein the top surface of the umbrella face portion is a semi-circular face structure.

6. The impermeable LED support according to claim 1, wherein the gap between the first metal plate and the second metal plate is 0.1-10mm.

7. The permeation-resistant LED support according to claim 1, wherein the first and second grooves have a depth of 0.01-0.5mm.