Method of manufacturing a moisture resistant LED light source

Abstract

The present application relates to the technical field of LED light source, disclose a kind of coating moisture-proof LED light source manufacturing method, including the following manufacturing steps:1), provide support, support has light emitting area, a plurality of light emitting chips are arranged on light emitting area;2), a plurality of light emitting chips are wired;3), the outer periphery of light emitting area is provided with dam, dam is arranged around the outer periphery of light emitting area, and enclosed formation top opening filling area, light emitting area is located at the bottom of filling area;4), fluorescent glue layer is filled in filling area, and fluorescent glue layer covers light emitting area and a plurality of light emitting chips;5), fluorescent glue layer has top face arranged upwards, waterproof coating is coated on top face, and waterproof coating covers entire top face.In this way, by dam and coating waterproof coating, fluorescent glue layer in light emitting area and light emitting chip are effectively isolated from moisture in atmosphere, and waterproof coating can effectively prevent moisture penetration, and the service life of LED light source is delayed.

Description

Technical Field

[0001] This invention patent relates to the technical field of LED light sources, and more specifically, to a method for manufacturing a moisture-proof coated LED light source. Background Technology

[0002] Because LED light sources have advantages such as rich colors, small size, environmental protection and energy saving, and long life, they have been widely used and promoted in various fields. Among them, the moisture resistance of LEDs is an important indicator of their reliability. Especially for applications where the use or storage environment is relatively humid, the moisture resistance of LEDs will directly affect the light quality and their service life.

[0003] In existing technology, an LED light source includes a bracket with a light-emitting area. Multiple light-emitting chips are fixed on the light-emitting area, and the positive and negative terminals of the multiple light-emitting chips are electrically connected to the corresponding positive and negative terminals on the bracket. A closed dam is provided outside the light-emitting area, which encloses the light-emitting chips. By filling the dam with fluorescent adhesive, a fluorescent adhesive layer is formed that fills the light-emitting area. The fluorescent adhesive layer improves light efficiency, achieves sealing, and isolates and protects the light-emitting chips. Generally, a protective cover is also provided outside the fluorescent adhesive layer to further isolate the light from the atmosphere. However, when the LED light source is used in a relatively humid environment, the humid air is prone to condensing into tiny water droplets. These water droplets seep into the light-emitting area along the gaps, which can easily cause circuit damage, thus causing the light source to malfunction. Summary of the Invention

[0004] The purpose of this invention is to provide a method for manufacturing moisture-proof LED light sources with coatings, aiming to solve the problem of poor moisture-proof performance of LED light sources in the prior art.

[0005] This invention is achieved through a method for manufacturing a moisture-proof LED light source with a coating, comprising the following manufacturing steps:

[0006] 1) Provide a bracket, the bracket having a light-emitting area, and a plurality of light-emitting chips disposed on the light-emitting area;

[0007] 2) Connect the multiple light-emitting chips;

[0008] 3) A dam is set around the periphery of the light-emitting area, the dam is arranged around the periphery of the light-emitting area to enclose and form a filling area with an opening at the top, and the light-emitting area is located at the bottom of the filling area;

[0009] 4) A fluorescent adhesive layer is filled in the filling area, the fluorescent adhesive layer covering the light-emitting area and multiple light-emitting chips;

[0010] 5) The fluorescent adhesive layer has an upward-facing top surface, on which a waterproof coating is applied. The waterproof coating covers the entire top surface, forming a moisture-proof LED light source.

[0011] Optionally, the light-emitting chip has a positive terminal and a negative terminal, and the bracket has a positive terminal connected to the positive terminal of the power supply and a negative terminal connected to the negative terminal of the power supply.

[0012] In manufacturing step 2), during the wiring process of the light-emitting chip, the positive terminal is connected to the positive terminal through a wire, and the negative terminal is connected to the negative terminal through a wire.

[0013] Optionally, in manufacturing step 3), the dam is in a closed, encircling shape.

[0014] Optionally, in manufacturing step 4), the top of the fluorescent adhesive layer is not higher than the top of the dam.

[0015] Optionally, in manufacturing step 5), a waterproof coating is sprayed onto the top surface using a spraying method.

[0016] Optionally, in manufacturing step 5), after the waterproof coating is sprayed onto the top surface, it is left to stand for a set time. After the waterproof coating is cured, the waterproof coating forms an integral part with the top surface.

[0017] Optionally, in manufacturing step 5), a jig sheet is used to cover the bracket. The jig sheet has a hollow area. After the top surface is embedded in the hollow area, a waterproof coating is sprayed onto the jig sheet using a spray head. The waterproof coating is sprayed onto the top surface.

[0018] Optionally, in manufacturing step 5), after the jig piece is placed on the support, the top of the dam passes through the hollow area, and the outer periphery of the hollow area abuts against the outer wall of the dam.

[0019] After a waterproof coating is sprayed onto a fixture sheet using a spray head, the waterproof coating covers the dam. The waterproof coating has a central section covering a fluorescent adhesive layer, a top section covering the top of the dam, and an outer section covering the outer side wall of the dam. The central section, the top section, and the outer section are integrally formed.

[0020] Optionally, in manufacturing step 4), the outer periphery of the fluorescent adhesive layer is arranged below the top of the dam, and the upper part of the inner sidewall of the dam is exposed, forming an exposed section exposed above the fluorescent adhesive layer; the exposed section is provided with a plurality of concave holes, and the plurality of concave holes are arranged around the circumference of the dam.

[0021] The top of the dam is recessed downwards to form an open annular groove, which is arranged around the circumference of the dam; in manufacturing step 5), after the waterproof coating is sprayed, the waterproof coating covers the exposed section to form an inner section, which is embedded and filled with multiple concave holes; the top section is embedded and filled with the open annular groove downwards.

[0022] Optionally, the opening annular groove is formed in the middle of the dam, and the concave hole is formed in the upper part of the dam; the outer wall of the dam is provided with a plurality of concave holes, which are arranged around the circumference of the dam, and the concave holes are located below the concave holes.

[0023] The concave hole connects to the open annular groove from the inside to the outside, and the concave hole connects to the open annular groove from the outside to the inside; in manufacturing step 5), after the waterproof coating is sprayed, the inner section is embedded and filled with the concave hole and connects to the open annular groove, and the outer section is embedded and filled with the concave hole and connects to the open annular groove.

[0024] Compared with existing technologies ， The present invention provides a method for manufacturing a moisture-proof LED light source by applying a waterproof coating to the top opening. The formed waterproof coating covers the entire top surface. Under the action of the waterproof coating and the dam, the light-emitting chip in the light-emitting area is effectively isolated from the moisture in the atmosphere. The waterproof coating can effectively prevent water molecules from penetrating. At the same time, the fluorescent adhesive layer also plays a role in isolation and moisture prevention, forming a double-layer moisture-proof effect, which prolongs the service life of the LED light source. Attached Figure Description

[0025] Figure 1 This is a front view schematic diagram of the moisture-proof coating LED light source provided by the present invention;

[0026] Figure 2 This is a front view schematic diagram of the jig sheet provided by the present invention;

[0027] Figure 3 This is a schematic diagram illustrating the fabrication process of applying a waterproof coating using a jig sheet, as provided by the present invention.

[0028] Figure 4 This is a half-section cross-sectional schematic diagram of the moisture-proof LED light source with coating provided by the present invention;

[0029] Figure 5 This invention provides Figure 4 Enlarged diagram of point A in the middle. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0031] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0032] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0033] Reference Figure 1-5 The image shown is a preferred embodiment of the present invention.

[0034] The method for manufacturing a moisture-proof LED light source with a coating provided by this invention includes the following manufacturing steps:

[0035] 1) Provide a bracket 100, which has a light-emitting area 101, and a plurality of light-emitting chips 110 are disposed on the light-emitting area 101;

[0036] 2) Connect multiple light-emitting chips 110;

[0037] 3) A dam 120 is provided around the periphery of the light-emitting area 101. The dam 120 is arranged around the periphery of the light-emitting area 101 to enclose and form a filling area with an opening at the top. The light-emitting area 101 is located at the bottom of the filling area.

[0038] 4) A fluorescent adhesive layer 130 is filled in the filling area, and the fluorescent adhesive layer 130 covers the light-emitting area 101 and multiple light-emitting chips 110.

[0039] 5) The fluorescent adhesive layer 130 has an upward-facing top surface, on which a waterproof coating 140 is applied. The waterproof coating 140 covers the entire top surface, forming a moisture-proof LED light source.

[0040] The above-mentioned method for manufacturing moisture-proof LED light sources involves applying a waterproof coating 140 to the top opening. The waterproof coating 140 covers the entire top surface. Under the action of the waterproof coating 140 and the dam 120, the light-emitting chip 110 in the light-emitting area 101 is effectively isolated from the moisture in the atmosphere. At the same time, the fluorescent adhesive layer 130 also plays a role in moisture isolation, forming a double-layer moisture-proof effect and extending the service life of the LED light source.

[0041] Specifically, the light-emitting chip 110 has a positive terminal and a negative terminal, and the bracket 100 has a positive terminal connected to the positive terminal of the power supply and a negative terminal connected to the negative terminal of the power supply.

[0042] In manufacturing step 2), during the wiring process of the light-emitting chip 110, the positive terminal is connected to the positive terminal via a wire, and the negative terminal is connected to the negative terminal via a wire. This forms a complete circuit, ensuring that the light-emitting chip 110 emits light normally after being connected to the circuit board.

[0043] In manufacturing step 3), the dam 120 is a closed, encircling shape. This ensures a complete seal and prevents the fluorescent adhesive from flowing out during the application of the fluorescent adhesive, which would make it difficult for the fluorescent adhesive layer 130 to form.

[0044] In manufacturing step 4), the top of the fluorescent adhesive layer 130 is not higher than the top of the dam 120. This prevents the fluorescent adhesive from flowing out during the process of coating the fluorescent adhesive to form the fluorescent adhesive layer 130.

[0045] In a preferred embodiment, in manufacturing step 5), the waterproof coating 140 is sprayed onto the top surface using a spraying method.

[0046] Specifically, in manufacturing step 5), after the waterproof coating 140 is sprayed onto the top surface, it is left to stand for a set time. Once the waterproof coating 140 has cured, it forms an integral part with the top surface. This ensures the moisture-proof function without any gaps.

[0047] In manufacturing step 5), a jig sheet 200 is used to cover the bracket 100. The jig sheet 200 has a hollow area 201. After the top surface is embedded in the hollow area 201, a waterproof coating 140 is sprayed onto the jig sheet 200 using a spray head. The waterproof coating 140 is sprayed onto the top surface. This facilitates the application of the waterproof coating 140 and also prevents the waterproof coating 140 from flowing to other areas of the bracket 100, causing problems such as short circuits.

[0048] In manufacturing step 5), after the jig piece 200 is placed on the bracket 100, the top of the dam 120 passes through the hollow area 201, and the outer periphery of the hollow area 201 abuts against the outer wall of the dam 120.

[0049] After the waterproof coating 140 is sprayed onto the jig piece 200 using a spray head, the waterproof coating 140 covers the dam 120. The waterproof coating 140 has a central section covering the fluorescent adhesive layer 130, a top section covering the top of the dam 120, and an outer section covering the outer side wall of the dam 120. The central section, top section, and outer section are integrally formed. In this way, the waterproof coating 140 is prevented from flowing into other areas of the support 100 through the gap between the dam 120 and the outer periphery of the hollow area 201 when the waterproof coating 140 is applied.

[0050] In this embodiment, in manufacturing step 4), the outer periphery of the fluorescent adhesive layer 130 is arranged below the top of the dam 120, and the upper part of the inner sidewall of the dam 120 is exposed, forming an exposed section above the fluorescent adhesive layer 130; the exposed section is provided with a plurality of concave holes 121, and the plurality of concave holes 121 are arranged around the circumference of the dam 120.

[0051] The top of the dam 120 is recessed downwards, forming an open annular groove 122, which is arranged around the circumference of the dam 120. In manufacturing step 5), after the waterproof coating 140 is sprayed, the waterproof coating 140 covers the exposed section, forming an inner section, which is embedded and filled with multiple recessed holes 121; the top section is embedded and filled with the open annular groove 122. In this way, by filling the recessed holes 121 and the open annular groove 122 with the waterproof coating 140, the connection between the waterproof coating and the dam 120 is made tighter, avoiding the outward deformation of the dam 120 in the later stages. The integrated waterproof coating 140 effectively forms a connection between the dam 120 and the waterproof coating 140 on the top opening.

[0052] In a preferred embodiment, an open annular groove 122 is formed in the middle of the dam 120, and an inner concave hole 121 is formed in the upper part of the dam 120; the outer wall of the dam 120 is provided with a plurality of outer concave holes 123, and the plurality of outer concave holes 123 are arranged around the circumference of the dam 120, with the outer concave holes 123 located below the inner concave holes 121.

[0053] The concave hole 121 connects to the open annular groove 122 from the inside to the outside, and the concave hole 123 connects to the open annular groove 122 from the outside to the inside. In manufacturing step 5), after the waterproof coating 140 is sprayed, the inner section is embedded and filled with the concave hole 121 and connected to the open annular groove 122, and the outer section is embedded and filled with the concave hole 123 and connected to the open annular groove 122. In this way, through the design of the concave hole 121, the outward opening of the concave hole 121 can be sealed by the jig piece 200 during the coating process. After the waterproof coating 140 is formed, it can be removed, which strengthens the connection between the dam 120 and the waterproof coating 140 on the top opening. This effectively avoids the possibility of the dam 120 deforming outward after long-term use, causing tiny gaps. The internal waterproof coating 140 of the dam 120, which is integrated with the waterproof coating 140 on the top opening, makes the overall structure more compact and ensures that tiny gaps do not appear later.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for manufacturing a moisture-proof LED light source with a coating, characterized in that, The manufacturing process includes the following steps: 1) Provide a bracket, the bracket having a light-emitting area, and a plurality of light-emitting chips disposed on the light-emitting area; 2) Connect the multiple light-emitting chips; 3) A dam is set around the periphery of the light-emitting area, the dam is arranged around the periphery of the light-emitting area to enclose and form a filling area with an opening at the top, and the light-emitting area is located at the bottom of the filling area; 4) A fluorescent adhesive layer is filled in the filling area, the fluorescent adhesive layer covering the light-emitting area and multiple light-emitting chips; 5) The fluorescent adhesive layer has an upward-facing top surface, and a waterproof coating is applied to the top surface, covering the entire top surface to form a moisture-proof LED light source. In manufacturing step 5), a waterproof coating is sprayed onto the top surface using a spraying method; In manufacturing step 5), a jig sheet is used to cover the bracket. The jig sheet has a hollow area. After the top surface is embedded in the hollow area, a waterproof coating is sprayed onto the jig sheet using a spray head. The waterproof coating is sprayed onto the top surface. In manufacturing step 5), after the jig piece is placed on the support, the top of the dam passes through the hollow area, and the outer periphery of the hollow area abuts against the outer wall of the dam. After a waterproof coating is sprayed onto a jig using a spray head, the waterproof coating is applied to the dam. The waterproof coating has a central section covering a fluorescent adhesive layer, a top section covering the dam, and an outer section covering the outer side wall of the dam. The central section, top section, and outer section are integrally formed. In manufacturing step 4), the outer periphery of the fluorescent adhesive layer is arranged below the top of the dam, and the upper part of the inner sidewall of the dam is exposed, forming an exposed section exposed above the fluorescent adhesive layer; the exposed section is provided with a plurality of concave holes, and the plurality of concave holes are arranged around the circumference of the dam. The top of the dam is recessed downwards to form an open annular groove, which is arranged around the circumference of the dam; in manufacturing step 5), after the waterproof coating is sprayed, the waterproof coating covers the exposed section to form an inner section, which is embedded and filled with multiple concave holes; the top section is embedded and filled with the open annular groove. The open annular groove is formed in the middle of the dam, and the concave hole is formed in the upper part of the dam; the outer wall of the dam is provided with a plurality of concave holes, which are arranged around the circumference of the dam, and the concave holes are located below the concave holes. The inner concave hole is connected to the open annular groove from the inside to the outside, and the outer concave hole is connected to the open annular groove from the outside to the inside. In manufacturing step 5), after the waterproof coating is sprayed, the inner section is embedded and filled with the concave hole and connected to the open annular groove, and the outer section is embedded and filled with the concave hole and connected to the open annular groove.

2. The method for manufacturing a moisture-proof LED light source with a coating as described in claim 1, characterized in that, The light-emitting chip has a positive terminal and a negative terminal, and the bracket has a positive terminal connected to the positive terminal of the power supply and a negative terminal connected to the negative terminal of the power supply. In manufacturing step 2), during the wiring process of the light-emitting chip, the positive terminal is connected to the positive terminal through a wire, and the negative terminal is connected to the negative terminal through a wire.

3. The method for manufacturing a moisture-proof LED light source with a coating as described in claim 1, characterized in that, In manufacturing step 3), the dam is in a closed, encircling shape.

4. The method for manufacturing a moisture-proof LED light source with a coating as described in claim 1, characterized in that, In manufacturing step 4), the top of the fluorescent adhesive layer is not higher than the top of the dam.

5. The method for manufacturing a moisture-proof LED light source with a coating as described in claim 1, characterized in that, In manufacturing step 5), after the waterproof coating is sprayed onto the top surface, it is left to stand for a set time. After the waterproof coating is cured, the waterproof coating and the top surface become one.

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