KR101683735B1 - Lamp - Google Patents

Abstract

The present invention relates to a lighting device provided with an antistatic coating layer-formed diffusion cover. According to the present invention, attachment of impurities (fine particles) to the diffusion cover attributable to a light source-based temperature increase in the case of a long-term use and a decline in illuminance resulting from light-based diffusion cover discoloration can be prevented. The present invention includes: a base having a mounting portion for a light source; and the diffusion cover coupled with the base while covering the light source and having the antistatic coating layer. In the antistatic coating layer, a first electrolyte solution containing 0.001 to 10 wt% of cation polymer or anion polymer and a second electrolyte solution containing 0.001 to 10 wt% of carbon nano tube are subjected to cross-coating with respect to the diffusion cover.

Description

[0001] LIGHTING APPARATUS WITH DIFFUSION COVER CONTAINING A UNLIMITED COATING LAYER {

The present invention relates to a lighting apparatus having a diffusion cover having an uncoated coating layer formed thereon. More particularly, the present invention relates to a lighting apparatus having a diffusion cover, A base having a mounting portion on which a light source is mounted, a diffusion cover coupled to the base while covering the light source, and an uncoated coating layer formed on the base to cover the light source, , The uncoated coating layer is formed by coating a first electrolyte solution containing 0.001 to 10 wt% of a cationic polymer or an anionic polymer and a second electrolyte solution containing 0.001 to 10 wt% of a carbon nanowire The present invention relates to a lighting apparatus having a diffusion cover having an uncoated coating layer formed thereon.

The LED has a junction structure of a P-type and an N-type semiconductor. When a voltage is applied, the LED is an optoelectronic device that emits light of energy corresponding to a bandgap of a semiconductor through the combination of electrons and regularity. Since it is quicker than ordinary bulbs and has low power consumption, indoor and outdoor lighting devices are widely used in various fields such as street lights, decorative lamps such as signboards, structure lighting, and bridges.

These LEDs are required to maintain a temperature of 50 to 60 ° C or lower at 25 ° C to ensure optimal operation. Therefore, the above conditions must be maintained to ensure the brightness and lifetime (over 50,000 hours) required for LED lighting. .

In addition, when the LED is used as a surface illuminator, it is common to diffuse the illuminance of the LED light source using a diffusion cover at a portion through which the LED light source passes because of the straightness of the light, which is characteristic of the LED light source.

However, the currently used LED lighting device has a diffusion cover made of translucent synthetic resin such as acryl, PC (PC), PMMA (PMMA) and the like when the temperature rises above 80 ° C There is a problem that impurities (fine dust) adhere to the surface or the shape of the diffusion cover is discolored or altered by ultraviolet rays emitted from the LED or the like, thereby lowering the illuminance of the LED light source.

In the case of a diffusion cover in which such impurities (fine dust) are stuck or discolored, the user can not easily remove (or restore) the same and can not be reused. Therefore, despite the advantages of the LED, There is a problem such as burden.

As a reference in the related art, there have been disclosed in the prior art patents 10-2013-0009323, 10-0996681, 10-0976421, 10-0976421, 10-2010-0116476 And the like.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a diffusion cover which prevents impurities (fine dust) from sticking to a diffusion cover, A first electrolyte solution containing a cationic polymer or an anionic polymer and a second electrolyte solution containing a carbon nanowire are repeatedly coated so as to prevent degradation of illuminance of the LED light source, It is an object of the present invention to provide a lighting apparatus having a formed diffusion cover.

According to an aspect of the present invention,

A base having a mounting portion on which a light source is mounted;

And a diffusion cover coupled to the base while covering the light source, the diffusion cover having an uncoated coating layer formed thereon,

The anti-

0.001 to 10% by weight of a first electrolyte solution comprising a cationic polymer or an anionic polymer,

A second electrolyte solution containing 0.001 to 10% by weight of carbon nanotubes,

Each of which is formed by cross coating on a diffusion cover.

In the lighting apparatus according to the present invention,

The cationic polymer of the first electrolyte solution is ionized in an aqueous solution to be positively charged,

Poly (styrene sulfonate), poly (ethylene imine), PAA (poly (amic acid)), PDDA (poly (diallyldimethylammonium chloride), PNIPAM (polyisoprene acrylamide) ), PMA (poly (methacrylic acid)), PVS (poly (vinyl sulfate)), PAA (poly (allyl amine) .

Further, in the lighting apparatus according to the present invention,

The anionic polymer of the first electrolyte solution is ionized in an aqueous solution to be negatively charged,

(3'-carboxy-4'-hydroxyphenylazo) benzenesulfonamido] -1,2-ethanediyl), such as sodium poly (styrene sulfonate), PVS Or a combination of two or more selected from the group consisting of

In addition, in the lighting apparatus according to the present invention,

The carbon nanotubes of the second electrolyte solution may be,

A single-walled carbon nanotube, a double-walled carbon nanotube, a multi-walled carbon nanotube, a nano-carbon, a graphene, or a plu- rane is used.

In the lighting apparatus according to the present invention,

The non-electrostatic coating layer is formed by coating the first electrolyte solution and the second electrolyte solution by spray LBL method.

Furthermore, in the lighting apparatus according to the present invention,

The non-electrostatic coating layer is formed by coating the coating layer formed of the first electrolyte solution and the second electrolyte solution repeatedly 1 to 20 times by a spray LBL method.

Further, in the lighting apparatus according to the present invention,

And a support coupled to the vertical end of the base and supporting the diffusion cover coupled to the mounting portion.

The illumination device according to the present invention having the above-described structure is formed by repeatedly coating a first electrolyte solution containing a cationic polymer or an anionic polymer and a second electrolyte solution containing a carbon nanowire, It is possible to prevent impurities (fine dust) from adhering to the diffusion cover due to static electricity or the like and to reduce the illuminance of the light source due to discoloration or discoloration due to ultraviolet rays even when the temperature of the light source is raised to 80 DEG C, So that it can be used for a long time,

This has the effect of reducing the cost of additional purchase for replacement of the diffusion cover.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a side view and a top view showing, in partial cross-section, a first embodiment of a lighting device according to the invention; Fig.
2 is a front view and a side view showing, in partial cross-section, a second embodiment of the lighting device according to the present invention.
Fig. 3 is a side view and a plan view showing, in partial cross-section, a third embodiment of the lighting device according to the present invention; Fig.

While the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

In the drawings, the same reference numerals are used for the same reference numerals, and in particular, the numerals of the tens and the digits of the digits, the digits of the tens, the digits of the digits and the alphabets are the same, Members referred to by reference numerals can be identified as members corresponding to these standards.

In the drawings, the components are expressed by exaggeratingly larger (or thicker) or smaller (or thinner) in size or thickness in consideration of the convenience of understanding, etc. However, It should not be.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

 In the present application, the term " comprising " or " consisting of ", or the like, refers to the presence of a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

It is to be understood that the first to second aspects described in the present specification are merely referred to in order to distinguish between different components and are not limited to the order in which they are manufactured, It may not match.

Prior to the description, the circular illumination apparatus shown in Fig. 1, the rectangular illumination apparatus shown in Fig. 2, and the rectangular illumination apparatus shown in Fig. 3 will be described as an example of the illumination apparatus of the present invention, A diffusion cover for protecting and diffusing light can be provided, and there is no limitation on the type and installation type of the lighting apparatus.

Hereinafter, a lighting apparatus including a diffusion cover having an uncoated coating layer according to the present invention will be described with reference to the accompanying drawings.

1 to 3, a lighting apparatus according to the present invention mainly comprises:

A base 10 having a mounting portion 11, a diffusion cover 20 coupled to the mounting portion 11 and supports 31, 32 and 33 for supporting the diffusion cover 20.

The base 10 is mounted with a light source (specifically, an LED light source) that emits light when the power is turned on. The base 10 is a power supply that converts commercial AC power input from the outside into a lighting power suitable for lighting the light source And a wiring for supplying an external commercial AC power to the power supply and supplying the lighting power of the power supply to the light source.

At this time, it is more preferable that an LED (light-emitting diode) mounted on a PCB is used as a light source.

Such a base 10,

A bottom portion 12,

And a vertical portion 13 vertically connected along the rim of the bottom portion 12 to form a mounting portion 11 in which a light source and / or a power supply and the like are accommodated together with the bottom portion 12.

The diffusion cover 20 is coupled to the base 10 while covering the light source of the mounting portion 11 to prevent the light source from being directly exposed to the outside to protect the light source, So as to diffuse the light emitted from the light source to illuminate the light source in a wide range.

The diffusion cover 20 may be made of a translucent synthetic resin material such as acryl, PC, PMMA and the like, and more preferably made of PM.

When the surface temperature of the diffusion cover 20 is increased, the impurities adhere to the diffusion cover 20 or are easily discolored or deteriorated due to ultraviolet light. However, when the power source is applied to the light source, The temperature of the illuminating device is increased by 80 DEG C or more.

Accordingly, the present invention solves the above problems by coating one surface or both surfaces of the diffusion cover 40 with the non-electroactive coating layer 52.

For this purpose, the uncoated coating layer (21)

0.001 to 10% by weight of a first electrolyte solution comprising a cationic polymer or an anionic polymer,

A second electrolyte solution containing 0.001 to 10% by weight of carbon nanotubes,

Are formed by cross coating the diffusion cover 20, respectively.

The first electrolyte solution is composed of 0.001 to 10% by weight of a cationic polymer or an anionic polymer and a remaining pure water,

The second electrolyte solution is composed of 0.001 to 10 wt% of carbon nanowire and pure water.

The first electrolyte solution and the second electrolyte solution can be coated by roll coating or knife coating. However, the present invention can be applied to the first and second electrolyte solutions Since the dispersibility in water is improved through ionization of water, it is preferable to use spray coating,

Particularly, the present invention relates to a method of forming an uncoated coating layer 21 by a spray LBL (layer by layer) method, forming a polymer electrolyte layer 21a coated with the first electrolyte solution and a polymer electrolyte layer 21b coated with the second electrolyte solution The carbon nanotube layer 21b is formed by van der Waals bonding to form one coating layer 21,

It is more preferable that the unlubricated coating layer 21 is formed of one or more of the plurality of coating layers 21 by repeating such spray ELVILL method 1 to 20 times.

The cationic polymer of the first electrolyte solution is ionized in an aqueous solution to be positively charged,

Poly (styrene sulfonate), poly (ethylene imine), PAA (poly (amic acid)), PDDA (poly (diallyldimethylammonium chloride), PNIPAM (polyisoprene acrylamide) ), PMA (poly (methacrylic acid)), PVS (poly (vinyl sulfate), PAA (poly (allylamine) ,

The anionic polymer of the first electrolyte solution is ionized in an aqueous solution to be negatively charged,

(3'-carboxy-4'-hydroxyphenylazo) benzenesulfonamido] -1,2-ethanediyl), such as sodium poly (styrene sulfonate), PVS ≪ / RTI > and combinations thereof.

When two or more of the cationic polymer electrolyte and the anionic polymer electrolyte are used in combination, the total weight of the electrolyte may be in the range of 0.001 to 10 wt%.

The carbon nanotubes of the second electrolyte solution,

Any one of a single-walled carbon nanotube, a double-walled carbon nanotube, a multi-walled carbon nanotube, a carbon nanofiber, a nanocarbon, a graphene, and a fluorocarbon is used.

The carbon nanotubes having such a structure can be modified to cationic or anionic on the surface of the carbon nanotubes through an appropriate oxidation process. This property improves the dispersibility in water, and the cationic polymer electrolyte Or an anionic polyelectrolyte to form an uncoated coating layer 21.

That is, for example, when the cationic polymer electrolyte layer 21a is formed, an anionically modified carbon nanotube layer 21b is formed and bonded to one coating layer 21, It is also possible to coat them with each other.

At this time, it is preferable that the total thickness of the uncoated coating layer 21 formed by the spray ELE process is in the range of 10 탆 to 20 탆.

The results of measurement of the surface electrical resistance of the diffusion cover 20 formed with the thus formed uncoated coating layer 21 are as follows.

Sample name (material to be used as the diffusion cover 20): Anti-static PMMA

Test result

Test Items unit Test result Test Methods Number of floors layer One 2 4 8 Spray LBL Permeability % 98 95 91 89 ASTM D 1003: 2007 Surface resistance Ω 2 * 10 ⁹ 8 * 10 ⁸ 1 * 10 ⁸ 4 * 10 ⁷ ASTM D 257: 2005

Analysis of experimental results

The electrical resistance of the surfaces of the diffusion covers 20 and 50 is reduced by the tunneling effect when the uncoated coating layer 21 is coated on the diffusion cover 20 made of a non-conductive material, It is confirmed that it falls below 10 ⁹ Ω / cm 2, so that it can be confirmed that the static electricity is prevented.

Practically, when the surface electric resistance is 10 ¹³ Ω / cm 2 or less, it is known that it exhibits sufficient antistatic effect. For reference, the anti-static grade on the US military specification is less than 10 ⁹ Ω / cm 2 and less than 10 ¹⁴ Ω / cm 2.

Therefore, the diffusion covers 20 and 50 according to the present invention can be used as the uninterruptible diffusion cover 20.

In addition, when the first and second electrolyte solutions having the composition ratios as described above are coated by the spray elvis process, discoloration or deterioration of the diffusion cover 20 due to ultraviolet rays or heat can be prevented,

In some cases, it is possible to add an ultraviolet screening agent to each electrolyte solution,

At this time, the ultraviolet screening agent is preferably mixed with 2 to 3% by weight based on 100% by weight of each electrolyte solution.

Next, a detailed configuration of an embodiment of a lighting apparatus in which the diffusion cover 20 coated with the uncoated coating layer 21 of the above-described configuration can be provided will be described.

1, a component such as a power supply is installed on the outer surface (upper surface) of the bottom portion 12 of the base 10 and is hung on the ceiling of the room.

The light source 1 is provided on the opening portion of the mounting portion 11 of the base 10 and the diffusion cover 20 is coupled to the end portion of the vertical portion 13.

The support 31 of the circular illuminating device L1 is provided in the shape of a flange bent so as to be wider in diameter than the vertical portion from the end of the vertical portion 13 to the outside so that the diffusion cover is supported by the flange- .

The circular illuminating device L1 includes a hooking member 14 hinged to a bottom portion, and is installed in a hanging manner on the ceiling, and is used as a downlight illumination device for indoor illumination.

Next, the rectangular illumination device L2 shown in Fig. 2 is installed in a direct-coupled manner to the ceiling of the room in such a manner that components such as a light source and a power supply are embedded in the mounting portion 11 of the base 10,

Particularly, the light source 1 is bolted to the bottom surface of the mounting plate protruding inward from the height of the inner surface of the vertical portion 13, and a space between the mounting plate and the bottom portion 12 is formed in the component accommodating space .

In addition, the diffusion cover 20 is formed in a similar " U "

The diffusion cover 20 is provided with a fitting protrusion at the end thereof and is slidably engaged with the fitting groove provided at the end portion of the vertical portion 13.

The support member 32 of the rectangular illumination device L2 is formed in the shape of a side cover which is coupled to both side openings of the base 10 so that both side ends of the base 10 and the diffusion cover 20 are fixed to the side cover support 32 To support both side ends of the diffusion cover,

At this time, the coupling between the base 10 and the side cover supporter 32 is made by a bolt passing through the side cover supporter 32 and being coupled to a screw groove provided at both ends of the base.

In addition, the rectangular illumination device has a 'C' -shaped hooking member 15 provided at the upper part of the bottom part 12 to be hooked on the ceiling bar,

The hooking member 15 and the base 10 are coupled through a fastening member 16 formed of a bolt member and a nut member. In this case, the bolt member is provided with a through- The wiring is passed.

At this time, the fastening member 16 may be directly connected to the base. However, in order to facilitate the operation by separating only the base 10 during maintenance and repair of the rectangular illumination device L2,

The elastic hooking member 17 is engaged with the head portion of the tightening member 16,

The projecting portion formed at the end of the elastic hooking member 17 is engaged with the insertion groove formed on the outer surface of the upper end of the vertical portion 13. [

The rectangular illumination device L2 is installed on the ceiling using the hooking member 15, the tightening member 16 and the elastic hooking member 17, and is used in a room where a ceiling structure, Respectively.

The rectangular illumination device L3 shown in FIG. 4 is constructed such that components such as a power supply, such as a circular illumination device L1, are installed on the outer surface (upper surface) of the bottom part 12 and partially embedded in the ceiling of the room As a result,

The light source 1 is provided on the inner side surface (bottom surface) of the bottom portion 12 of the base 10 and the diffusion cover 20 is engaged while covering the mounting portion 11 on which the light source 1 is mounted.

The support 33 of the rectangular illumination device 13 is provided in a frame shape to be coupled to an end of the base 10 to surround the edge of the diffusion cover 20 to support the diffusion cover 20.

The frame support body 33 is provided with a fitting groove 33a at its inner end so that edge portions of the flat diffusion cover 20 are inserted and engaged,

A flange portion 13a bent outward at an end portion of the vertical portion 13 is provided to be engaged with the inner space portion of the frame support 33 for coupling the base 10 and the frame support 33 .

The bonding between the frame supports 33 may be made by bolting or bonding.

The present invention is characterized in that an uncoated coating layer 21 as described above is coated on a diffusion cover 20 used in various types of lighting apparatuses as described above to form a light source 1, It is possible to prevent the surface temperature of the diffusion cover 20 from rising so that the impurities adhere to the diffusion cover 20 or the illuminance of the illumination device is reduced due to discoloration or deterioration due to ultraviolet rays or the like.

While the present invention has been described with reference to the accompanying drawings, it is to be understood that the present invention is not limited to those precise embodiments, and various modifications, alterations, and substitutions can be made by those skilled in the art Such modifications, alterations, and substitutions are to be construed as within the scope of the present invention.

1: Light source
10: base 11: mounting part
12: bottom part 13: vertical part
14, 15, 17: a hook member 16: a fastening member
20: diffusion cover 21: uncoated coating layer
21a: electrolyte layer 21b: carbon nanowire layer
31, 32, 33: support

Claims (7)

A base (10) having a mounting portion (11) on which the light source (1) is mounted;
And a diffusion cover 20 coupled to the base 10 while covering the light source 1 and having an uncoated coating layer 21,
The non-electrostatic coating layer (21)
A first electrolyte solution containing 0.001 to 10% by weight of a cationic polymer ionized in an aqueous solution to be positively charged or an anionic polymer ionized in an aqueous solution and negatively charged,
A second electrolyte solution containing 0.001 to 10% by weight of carbon nanotubes, which is cationically or anionically modified on the surface of the surface through oxidation,
Are each formed by cross coating on the diffusion cover 20,
The non-electrostatic coating layer 21 is formed by coating a coating layer 21a (21b) formed of the first electrolyte solution and the second electrolyte solution 1 to 20 times by a spray LBL method,
The repeatedly coated polymer electrolyte layer 21a coated with the first electrolyte solution and the carbon nanotube film layer 21b coated with the second electrolyte solution have different ionic properties and are van der Waals bonded, Is formed as a single coating layer (21) whose electrical resistance on the surface is reduced.
The method according to claim 1,
The cationic polymer of the first electrolyte solution may include,
Poly (styrene sulfonate), poly (ethylene imine), PAA (poly (amic acid)), PDDA (poly (diallyldimethylammonium chloride), PNIPAM (polyisoprene acrylamide) ), PMA (poly (methacrylic acid)), PVS (poly (vinyl sulfate)), PAA (poly (allyl amine) .
The method according to claim 1,
The anionic polymer of the first electrolyte solution may include,
(3'-carboxy-4'-hydroxyphenylazo) benzenesulfonamido] -1,2-ethanediyl), sodium poly (styrene sulfonate), PVP And a combination thereof.
The method according to claim 1,
The carbon nanotubes of the second electrolyte solution may be,
Wherein one of the single-walled carbon nanotubes, the double-walled carbon nanotubes, the multi-walled carbon nanotubes, the nanocarbons, the graphenes, and the plugs is used.
delete delete 5. The method according to any one of claims 1 to 4,
And a support (31, 32, 33) coupled to an end of the vertical portion (13) of the base (10) and supporting a diffusion cover (20) coupled to the mounting portion (11) .

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