KR102125935B1 - Manufacturing method of waterproof led light and waterproof led light manufactred by the method - Google Patents

Abstract

The present invention relates to a manufacturing method of a waterproof LED luminaire to which a waterproof function is applied, and a waterproof led luminaire manufactured by the method, and more specifically, the method comprises the following steps of: preparing a waterproof composition comprising a ceramic inorganic powder and a binder; coating the prepared waterproof composition on an LED converter and an LED printed circuit board; and manufacturing a luminaire including the coated LED converter and the LED printed circuit board. According to the present invention, it is possible to stably protect the LED luminaire from moisture, dust, etc., thereby extending the lifespan.

Description

Manufacturing method of LED luminaire with waterproof function and LED luminaire by the method{MANUFACTURING METHOD OF WATERPROOF LED LIGHT AND WATERPROOF LED LIGHT MANUFACTRED BY THE METHOD}

The present invention relates to a manufacturing method of an LED luminaire to which a waterproof function is applied, and to an LED luminaire by the method, and more particularly, to a method of manufacturing an LED luminaire that is safe from dust and moisture and an LED luminaire by the method.

LED (LED) luminaires are characterized by low power consumption, excellent visibility, and long service life, and are rapidly increasing in use as street lights, security lights, and lights in roads, residential areas, and parks.

However, although the LED luminaire is excellent in terms of energy saving, the LED luminaire installed on roads and residential districts exposed to the outdoors is directly affected by moisture and moisture caused by seasonal changes.

Therefore, it can be said that the LED luminaire, which is installed in a state exposed to the outdoor natural environment, such as a street light, a security light, and a lighting lamp, is required to be waterproof and moisture proof so as not to be affected by moisture and moisture.

As a conventional technique for waterproofing and moisture-proofing a luminaire, Korean Patent Registration No. 10-1213617 has been proposed. The pre-registered patent is formed by combining the outer sealing member and the inner sealing member between the housing of the LED luminaire and the transmission panel and the fixing panel coupled to the housing, and the bottom surface of the transmission panel and the rear surface of the fixing panel, respectively. An intake hole and an exhaust hole are respectively formed in the intake hole to suck external air and the sucked air is a natural circulation process that exhausts through the exhaust hole to discharge internal heat to the outside to cool it.

However, the pre-registered patent prevents rain or moisture from entering in the rain, resulting in a short circuit due to the weakening of the insulation inside the housing due to the introduced moisture and moisture, thereby damaging the printed circuit board (PCB) and converter to improve the life of the luminaire. There was a problem to be shortened.

KR 10-1213617 B1 KR 10-1890611 B2

Accordingly, an object of the present invention is to apply a waterproofing function having excellent waterproofing properties by coating parts to be protected from moisture and moisture, such as a converter inside a housing, a printed circuit board, etc. It is to provide a luminaire.

The manufacturing method of the LED luminaire to which the waterproof function according to the present invention is applied is a step of manufacturing a waterproof composition comprising a ceramic-based inorganic powder and a binder, and coating the prepared waterproof composition on an LED converter and an LED printed circuit board. And, characterized in that it comprises the step of manufacturing a luminaire including the coated LED converter and the LED printed circuit board.

The ceramic-based inorganic powder is silica (SiO ₂ ) powder, and the binder is characterized in that it is an epoxy-based or urethane-based solvent-free resin.

After the coating step, it characterized in that it further comprises the step of curing the waterproof composition coated on the LED converter and the LED printed circuit board.

The waterproof composition is characterized in that it further comprises an octafluoro cyclopan (Octafluoro-[2,2] paracyclophane) and tricresyl phosphate (Tricresyl Phosphate).

The waterproof composition is characterized in that it contains 30 to 50 parts by weight of the ceramic-based inorganic powder, 10 to 20 parts by weight of the octafluorocyclopan, and 10 to 20 parts by weight of the tricrezyl phosphate, based on 100 parts by weight of the binder. do.

The LED luminaire according to the present invention is characterized in that it is manufactured by the above method.

The manufacturing method of the LED luminaire to which the waterproof function according to the present invention is applied and the LED luminaire according to the method have the advantage of stably protecting the LED luminaire from moisture, dust, etc., thereby extending the life.

1 is a manufacturing process of the LED luminaire according to the present invention.
2 is a schematic view of an LED luminaire according to the present invention.
3 is a cross-sectional view of a converter for a coated LED according to the present invention.
Figure 4 is a cross-sectional view of the coated LED printed circuit board according to the present invention.

Hereinafter, the present invention will be described in detail.

The manufacturing method of the LED luminaire to which the waterproof function according to the present invention is applied is, as shown in FIG. 1, the step of manufacturing a waterproof composition comprising a ceramic-based inorganic powder and a binder, and the prepared waterproof composition for LED converter and LED printing It characterized in that it comprises the step of coating the circuit board, and manufacturing the luminaire including the coated LED converter and the LED printed circuit board.

At this time, the LED luminaire manufactured by the present invention includes an LED module 10, an LED converter 20, a body 30, and a cover 40, including an LED printed circuit board 14, as shown in FIG. By doing so, the converter 20 connected to the external power source and the electric wire receives power from an external power source, so that the driving device 24 of the converter 20 is driven, and the LED module 10 connected to the converter 20 and the electric wire ) Is powered so that the LED 12 is driven. Since the configuration of such a luminaire is a publicly known technique in the field to which this technique belongs, a detailed description thereof will be omitted below. In addition, FIG. 2 illustrates only one example of a luminaire, and it is natural that the shape and the like are not limited, and it can be applied to various types of luminaires such as indoor lighting, floodlights, street lights, security lights, tunnel lights, and downlights. Do.

Hereinafter, this will be described in detail step by step with reference to FIGS. 1 to 4.

Ceramic Preparing a waterproof composition 100 comprising an inorganic powder and a binder

First, a waterproof composition 100 including a ceramic-based inorganic powder and a binder is prepared.

Here, it is preferable that the ceramic-based inorganic powder is silica (SiO ₂ ), the silica imparts a hydrophilic group to the waterproof coating film to prevent water droplets from forming on the waterproof coating surface, as well as to have insulation and corrosion resistance. It acts as a filler.

The silica may have a particle size of 300 to 1,000 nm, but is not limited thereto, and may be mixed in a sol or gel form as well as a powder.

In the present invention, the ceramic-based inorganic powder may be included in 30 to 50 parts by weight based on 100 parts by weight of the binder. If the ceramic-based inorganic powder exceeds 50 parts by weight, the coating film is difficult to form densely, and if it is less than 30 parts by weight, the hydrophilic group This is because it cannot be given sufficiently.

And the binder is not only for the adhesion between the LED converter 20 and the LED printed circuit board 14 and the ceramic-based inorganic powder, but is also a basic material for forming a waterproof coating film. As the binder, an epoxy-based or urethane-based solvent-free resin may be used. The epoxy-based or urethane-based solvent-free resin can be used in various kinds known in the art to which this technology belongs, and its use is not limited.

Illustratively, the epoxy-based solvent-free resin may be a two-component product composed of a main material and a curing agent, and the main subject is cresyl glycidyl ether with respect to 100 parts by weight of a solvent-free type epoxy resin having an epoxy equivalent weight of 150 to 550 g/eq. 10 to 50 parts by weight and 3 to 10 parts by weight of 3-glycidoxypropyl triethoxysilane, the curing agent may include 10 to 50 parts by weight of the curing accelerator relative to 100 parts by weight of the amine-based curing agent. And the subject and the curing agent may be mixed in a weight ratio of 1:0.1 to 1.

At this time, the epoxy resin is bisphenol A-based, bisphenol AD-based, novolak-based, bisphenol F-based and one of conventional glycidyl ether-based epoxy resins such as brominated bisphenol A-based and glycidyl ester-based epoxy resins It may be the above, but it is not limited. In addition, the cresyl glycidyl ether is for adjusting the viscosity of the composition, 3-glycidoxypropyl triethoxysilane is used to improve the adhesion.

As the curing agent, an amine-based curing agent selected from the group consisting of an alicyclic polyamine, an aliphatic polyamine, an aromatic polyamine, and an amine adduct is used, and typically, the alicyclic polyamine is isophorone diamine, and an aliphatic/aromatic polyamine Is m-xylenediamine. The curing accelerator is for improving reactivity, diethyl triamine (DETA), ethylene diamine (EDA), triethylene tetraamine (TETA), tetraethylene pentaamine (TEPA), diethyl aminopropylamine (DEAPA), etc. Of aliphatic diamines and methanediamine (MDA), N-aminoethylpiperidine (N-AEP), m-xylenediamine (m-XDA), 1,3-bis amino methyl cyclohexane (1,3-AC )Isophorone diamine, diamino cyclohexane, 4-4 bispara amino-cyclohexylmethane, diethylpropanediamine (N,N,-Diethyl-1,3-propanediamine), hydroxyethylpentanediamine (N-(2 -Hydroxyethyl)-1,3-pentanediamine) or dibutylpropanediamine (N,N-di-n-butyl-1,3-Propanediamine) can be used.

In addition, the urethane-based solvent-free resin may also be a two-component product composed of a main material and a curing agent, and the main subject is composed of a urethane prepolymer or a monomer having two or more isocyanate reactors in a molecular chain, and a curing agent is two or more alcohols at the molecular chain end. The polyol or polyamine having a group (-OH) or an amine group (-NH2) and the reaction catalyst may be configured in a weight ratio of 1:0.01 to 0.1, and the subject and the curing agent may be in a weight ratio of 10:9 to 12.

At this time, the molecular weight of the urethane prepolymer or monomer is preferably 3,000 or less in consideration of viscosity, and the molecular weight of the polyol or polyamine having two or more alcohol groups (-OH) or amine groups (-NH2) at the molecular chain ends is viscosity. Considering is preferably less than 5,000, the reaction catalyst is preferably used Pb Octoate.

On the other hand, when using a binder made of the subject and the curing agent, the ceramic-based inorganic powder is preferably mixed first with the subject and then the curing agent is mixed, but this is not necessarily limited.

The prepared waterproof composition (100) LED Coating the converter 20 and the LED printed circuit board 14.

Next, the prepared waterproof composition 100 is coated on the LED converter 20 and the LED printed circuit board 14.

The LED converter 20 is a driving device for driving the LED 12 of the LED module 10 mounted on the converter substrate 22 and the converter substrate 22 on which the power circuit is printed, as shown in FIG. 24), the converter substrate 22 and the driving device 24 may be embedded in the case 26. In the present invention, since a coating film is formed on the LED converter 20, an upper portion of the case 26 is used in an open shape, and by coating the opened upper portion with the waterproof composition 100, as shown in FIG. 3, the converter The substrate 22 and the driving device 24 are protected from moisture and dust. In addition, a case may be additionally provided on the upper portion of the LED converter 20 after the coating, and its implementation is not limited.

In addition, in the LED printed circuit board 14, a plurality of LEDs 12 are arranged at regular intervals to form the LED module 10, and the front and rear surfaces of the LED printed circuit board 14 are coated with a waterproof composition. By doing so, the printed circuit board is also stably protected from moisture and dust. In addition, the present invention may coat only the LED printed circuit board 14 and, as shown in FIG. 4, may also coat the entire LED module 10, and the implementation thereof is not limited.

In addition, the method for coating the waterproof composition 100 on the LED converter 20 is not limited, but most preferably, a vacuum impregnation method is used.

The vacuum impregnation method is a method sufficiently posted in the prior art, for example, the converter for LED is vacuumed to a vacuum of 0.01-5.0 torr in a vacuum impregnation chamber, and the waterproof composition is introduced into a mixing tank to obtain a 0.01-5.0 torr. After vacuuming with a vacuum degree, the vacuum of the mixing tank is released to form the coating film 20 by impregnating the waterproof composition with a vacuum-converted LED converter by injecting the waterproof composition into a vacuum impregnation chamber by an air pressure difference. will be.

In addition, the LED printed circuit board 14 can also be applied to such a vacuum impregnation method, it is natural that a variety of other known coating film forming methods can be used.

remind LED Step of curing the waterproof composition 100 coated on the converter 20 and the LED printed circuit board 14.

Then, the waterproofing composition 100 coated on the LED converter 20 and the LED printed circuit board 14 is cured. At this time, the curing method is not limited, as well as thermal curing, natural curing is also possible.

The coated LED Converter 20 and LED printed circuit board 14 comprising Luminaire (A) Manufacturing steps.

And finally, a luminaire (A) including the coated LED converter (20) and the LED printed circuit board (14) is manufactured.

At this time, the luminaire (A) is illustratively, as shown in FIG. 2, including the LED module 10, the converter 20, the body 30 and the cover 40, including the LED printed circuit board 14 , The converter 20 connected to an external power source is supplied with electric power from an external power source, so that the driving device 24 of the converter 20 is driven, and to the LED module 10 connected to the converter 20 and a wire. LED 12 is driven by power being supplied. Although the illustration of the coating composition 100 is omitted in FIG. 2, a coating film by the coating composition 100 is formed on both the upper and lower surfaces of the LED converter 20 and the LED printed circuit board 14. Is natural.

On the other hand, the waterproof composition 100 in the present invention, by further comprising at least one of octafluoro cyclopan and tricresyl phosphate (Tricresyl Phosphate), it is possible to further improve the waterproof, dustproof, flame retardant, heat insulation, etc. .

The octafluoro-cyclopan (Octafluoro-[2,2] paracyclophane) has a waterproof and dustproof function, which can increase the life of the converter for LEDs, and the tritolyl phosphate forms a coating film together with a binder. By doing so, it shields heat, imparts flame retardancy and heat insulation, and serves to stably protect the converter from moisture and dust.

At this time, the mixing amount is preferably 10 to 20 parts by weight of the octafluoro cyclopan (Octafluoro-[2,2] paracyclophane), and 10 to 20 parts by weight of the tritolyl phosphate relative to 100 parts by weight of the binder Do.

Therefore, when octafluorocyclopan and tricresyl phosphate are further included, more excellent waterproofness can be secured.

The LED luminaire (A) according to the present invention has the advantage of being stably protected from dust, other contaminants, and moisture, thereby extending its life. In addition, the LED luminaire A according to the present invention may be, for example, an indoor lighting lamp, a floodlight, a street lamp, a security lamp, a tunnel lamp, a downlight, etc., and the type of the lamp is not limited.

Hereinafter, the present invention will be described in more detail through examples.

(Example 1)

200 g of bisphenol A-type epoxy resin having an epoxy equivalent of 350 g/eq, 60 g of cresylglycidyl ether and 14 g of 3-glycidoxypropyltriethoxysilane, and 100 g of isoprondiamine and 30 g of polyethylenetetraamine A binder made of a curing agent was prepared.

And 160 g of silica having an average particle size of 800 nm was added to the subject of the binder to disperse for 30 minutes, followed by stirring for 30 minutes.

Next, a waterproof composition was prepared by mixing the curing agent on the subject in which the silica was dispersed.

The waterproof composition was coated on a converter for LEDs by vacuum impregnation, and cured at 40°C for 20 minutes.

(Example 2)

It was carried out in the same manner as in Example 1,

When preparing the waterproof composition, 40 g of octafluoro cyclopan and 40 g of tricresyl phosphate were further mixed on the subject of the binder.

(Example 3)

It was carried out in the same manner as in Example 1,

Urethane solvent-free resin was used as the binder. The subject of the urethane solvent-free resin is composed of 202 g of diisocyanate having an equivalent weight of 200, and the curing agent is composed of 110 g of dihydric alcohol having a molecular weight of 4,000, 82 g of dihydric alcohol having a molecular weight of 1,000, and 10 g of Pb Octoate.

(Example 4)

It was carried out in the same manner as in Example 3,

When preparing the waterproof composition, 40 g of octafluoro cyclopan and 40 g of tricresyl phosphate were further mixed on the subject of the binder.

(Test Example 1)

The LED converter manufactured as described above was subjected to an immersion test under conditions of immersion depth of 30 cm and immersion time of 30 minutes.

The results were as shown in Table 1 below.

division Example 1 Example 2 Example 3 Example 4 Control 1
(No coating, no case) Control 2
(No coating, use case) result normal normal normal normal Not working Not working

As can be seen from Table 1, it was confirmed that Examples 1 to 4 had no effect due to immersion, but Controls 1 and 2 were able to confirm that the converter for LEDs was completely damaged and did not operate normally.

As can be seen from the test example, the converter formed with the coating film of the present invention is excellent in water resistance, and thus it was possible to predict that the LED substrate will also exhibit the same level of water resistance, and the luminaire assembled using it is converted by moisture and dust. , It was confirmed that the printed circuit board and the like would be stably protected.

As described above, in the present invention, it has been described by specific matters such as specific components and limited embodiments, but is provided to help a more comprehensive understanding of the present invention. Also, the present invention is not limited to the above-described embodiments, Those skilled in the art to which the present invention pertains can make various modifications and variations from these descriptions. Therefore, the spirit of the present invention is not limited to the above-described embodiments, and should not be determined. It will be said that not only the claims described below, but also all those having equivalent or equivalent modifications to the claims are included in the scope of the spirit of the present invention.

10: LED module 14: LED printed circuit board
20: LED converter 100: waterproof composition

Claims (6)

Preparing a waterproof composition comprising a ceramic-based inorganic powder, a binder, octafluoro-[2,2] paracyclophane, and tricresyl phosphate (Tricresyl Phosphate),
Coating the prepared waterproof composition on an LED converter and an LED printed circuit board,
And manufacturing a luminaire comprising the coated LED converter and LED printed circuit board,
The waterproof composition, characterized in that it comprises 30 to 50 parts by weight of the ceramic-based inorganic powder, 10 to 20 parts by weight of the octafluorocyclopan, and 10 to 20 parts by weight of the tricresyl phosphate relative to 100 parts by weight of the binder Manufacturing method of LED lighting fixture with waterproof function.
According to claim 1,
The ceramic-based inorganic powder is silica (SiO ₂ ) powder,
The binder is an epoxy or urethane-based solvent-free resin manufacturing method of the LED luminaire, characterized in that the waterproof function is applied.
According to claim 2,
After the step of coating,
The LED converter and the LED printed circuit board coating method of manufacturing a waterproof LED lamp characterized in that it further comprises a step of curing the waterproof composition.
According to claim 1,
The binder includes an epoxy-based or urethane-based solvent-free resin,
The epoxy-based solvent-free resin is composed of a main agent and a curing agent, and the main subject is 10 to 50 parts by weight of cresyl glycidyl ether and 3-glyce based on 100 parts by weight of a solvent-free epoxy resin having an epoxy equivalent weight of 150 to 550 g/eq. 5 to 10 parts by weight of propylpropyl ethoxysilane, and the curing agent contains 10 to 50 parts by weight of a curing accelerator relative to 100 parts by weight of an amine-based curing agent, and the main agent and the curing agent are mixed in a weight ratio of 1:0.1 to 1 ,
The urethane-based solvent-free resin is composed of a subject and a curing agent, the subject is composed of a urethane prepolymer or monomer having two or more isocyanate reactors in the molecular chain, and the curing agent is two or more alcohol groups (-OH) or amine groups at the molecular chain end. Preparation of LED luminaire with waterproof function, characterized in that the polyol or polyamine having (-NH2) and the reaction catalyst are composed in a weight ratio of 1:0.01 to 0.1, and the subject and the curing agent are mixed in a weight ratio of 10:9 to 12. Way.
delete Claim 1 to claim 4 characterized in that the LED lighting fixture is applied with a waterproof function, characterized in that produced by any one of the methods.

Images