KR101803504B1 - An LED landscape lighting apparatus with a lightning protection function and an internal moisture protection function - Google Patents

Abstract

According to the present invention, an LED landscape lighting apparatus with lightning protection and internal moisture prevention function comprises: a plurality of lighting lamps including a landscape lighting fixture, a case, and a cover; a support inserted and coupled to the case to be coupled to the plurality of lighting lamps to support the plurality of lighting lamps; a lightning protection unit arranged between a power supply unit to supply power to the lighting lamps and both terminals of the landscape lighting fixture in parallel, wherein a terminal on one side is grounded through the case to firstly block an abruptly entering surge voltage and secondly block a surge voltage not firstly blocked; and an internal moisture prevention unit inserted into a plurality of communication holes drilled on a dividing wall dividing an inner portion of a lighting apparatus body to prevent moisture from entering the plurality of lighting lamps and the lightning protection unit to cause condensation.

Description

[0001] The present invention relates to an LED landscape lighting apparatus having a lightning protection function and an internal moisture prevention function,

The present invention relates to an LED landscape lighting apparatus, and more particularly, it relates to an LED landscape lighting apparatus capable of safely shutting off a surge voltage that flows suddenly due to a lightning strike, etc. in a second order to prevent breakdown and damage of a landscape lighting apparatus, The present invention relates to an LED illumination device having a lightning protection function and an internal moisture prevention function that can improve the safety and reliability of a product by preventing condensation from being released by releasing moisture inside.

Generally, neon lamps, which are widely used, are not only free to adjust the brightness but also have a flicker function as compared with general fluorescent lamps. The neon lamp is an inert gas belonging to Group 0 of the periodic table, It is slightly contained but its amount is 0.00182% by volume.

Such neon is found in the spectrum of liquid air classification, and it is a colorless, odorless gas and it dissolves 15 ml in 100 ml of water at 20 ℃.

Liquid air is evaporated at low temperature, and it is repeatedly collected together with helium to solidify the neon with liquid hydrogen. This is obtained by separating from helium. The discharge shows a remarkable line spectrum at the red part and a very low pressure It is also used in neon tubes because it discharges in the gypsum tube and glows in red.

In order to construct a signboard or advertisement board or a lighting device by using such a neon light, first, each of the neon lights is combined with one transformer, and each transformer is connected to the flasher.

Then, the power is connected to the flicker. At this time, a converter for converting the normal AC power to the DC power is further mounted.

However, in the case of manufacturing an illumination lamp such as a bridge or a bridge by using a neon lamp or the like, since a large amount of transformers are required as described above, the manufacturing cost is too large and the risk of fire due to the transformer is high And a normal neon lamp has a life span of about one year, but it is easy to break down, so that it is frequently disadvantageous to replace the neon lamp.

Also, in the case of neon lights, the color of the light can not be varied in various ways, and thus there is a limit in that the advertisement contents including the various lighting or advertisement signboard itself can not be created beautifully.

Meanwhile, a light emitting diode (LED) has a junction structure of a P-type and an N-type semiconductor and is an optoelectronic device that emits light of energy corresponding to a bandgap of a semiconductor by the combination of electrons and holes when a voltage is applied. Since the reaction time is faster than general bulbs and the power consumption is as low as 20%, it has recently been used in many fields including high efficiency lighting means.

The floodlight using such a light emitting diode utilizes a module in which a large number of high-brightness light emitting diodes or power LEDs are assembled on a substrate as a light source, and is used as a light source such as a signboard, a structure lighting, As a result.

In addition, the illumination lamp using the light emitting diode may have a structure in which a plurality of light emitting diodes are disposed on a printed circuit board formed in a disk or various shapes so that the light emitting diode can be used as a general illumination lamp, a method in which a solid or flexible printed circuit And a line bar type method in which a plurality of light emitting diodes are arranged on a substrate at regular intervals.

In the former case, it is widely used in general illumination lamps and traffic lights. In the latter case, it is widely used in high-rise buildings, bridges, overpasses, and advertisements.

However, most of the conventional LED light bulbs are simply composed of the light emitting diode module, the control unit, and the power supply unit, but do not have any protection function against the lightning strike.

However, since the structure of the light emitting diode is essentially a double junction structure of a metal which is extremely vulnerable to static electricity or transient overvoltage, there is a limitation that leakage current is generated or destroyed due to damage to the double junction at the moment of instantaneous voltage.

Accordingly, in the development and manufacture of light emitting diodes, in order to protect a light emitting body when static electricity is generated, a Zener diode or a varistor is connected in series with the light emitting body in a light emitting diode packaging process to block static electricity directly transmitted to the light emitting body. The outdoor lighting is installed and operated in a state in which the power terminal and the control unit are not provided with any protection function against the lightning.

Therefore, in the conventional light emitting diode type landscape lighting lamp, when the lightning is generated, the expensive light emitting diode itself is damaged to shorten the lifetime of the light emitting diode type landscape lighting lamp itself and the voltage and wavelength of the light emitting diode There is a problem that the emotional presentation of the landscape lighting is not possible due to the change, and there is a problem that the function of directing the communication terminal required for producing the panoramic image is stopped due to the noise generated at the control circuit end, and there is a risk of safety accident.

On the other hand, an arc surge and an electromagnetic wave are generated at the time of lighting of the lighting apparatus, which adversely affects adjacent electronic equipment.

Therefore, there is a need to prevent arc or electromagnetic waves, which adversely affect electronic equipment, with respect to a lighting apparatus installed around a sensitive electronic equipment.

In addition, in the case of a lighting device composed of a semiconductor device operated at a low voltage, since it is vulnerable to an abnormal voltage such as a lightning strike and a surge, a lot of damage is caused by frequent breakdown and breakage.

In particular, in case of a theater or a concert hall where large damage may occur if the lighting apparatus fails or breaks even if it is in the right condition, it is necessary to prevent the failure or breakage of the lighting apparatus due to an abnormal voltage such as a lightning strike or surge, there was.

On the other hand, the lighting apparatus is installed in the lower part of the lighting apparatus main body, and divides the lamp room into a lamp room where a lamp is installed and a wiring terminal room where a wiring terminal is installed. Is freely circulated.

However, a difference in air pressure occurs due to the lamps being turned on and off.

That is, when the lighting apparatus is turned on, the pressure inside the lighting apparatus becomes higher due to lighting of the lamp, so that the air inside the lighting apparatus is discharged to the outside of the lighting apparatus. When the lighting apparatus is turned off, The air pressure is reduced by the amount of air exhausted from the inside.

As a result, foreign air such as foreign matter, mosquitoes and fleeing flies are introduced into the interior of the lighting apparatus, and when it is used for a long time, harmful substances such as foreign matter and insects accumulate enough to block the lamp light inside the lighting apparatus. There is a problem that it can not be ensured.

Further, when the lamp of the lighting apparatus is turned on, the internal temperature is lowered by the amount of the internal air discharged by the increased internal pressure, and at the same time, the internal air pressure is lowered to introduce external air for balance of pressure inside and outside the lighting apparatus .

 As a result, the outside air is introduced into the lighting apparatus together with the external moisture, so that dew condensation occurs in the interior of the lighting apparatus, resulting in a deterioration in lamp life.

Accordingly, it is possible to quickly and safely shut off the surge voltage that is suddenly introduced due to the lightning, etc., thereby preventing the breakdown and damage of the landscape lighting device, preventing moisture from entering the outside, There is a demand for improvement of the structure and function of the landscape lighting device.

KR 10-2010-12114 A

It is an object of the present invention to provide an LED lighting device capable of primarily preventing a surge voltage that is suddenly introduced due to a lightning stroke or the like and also capable of safely shutting off a surge voltage that is not primarily blocked, And to provide a landscape lighting device.

It is another object of the present invention to provide an LED landscape lighting device capable of preventing external moisture from penetrating into a lighting device and releasing moisture and vapor generated therein to the outside.

According to an aspect of the present invention, there is provided an LED landscape lighting apparatus having a lightning protection function and an internal moisture prevention function, including a circuit board having a plurality of circuit elements, a plurality of LED lamps disposed above the circuit board, A case for accommodating the circuit board and the illuminating device and discharging the heat generated from the illuminating device to the outside; and a case for connecting the circuit board and the illuminating device A plurality of illumination lights including a cover for covering the instrument; A support for supporting the plurality of illumination lamps by being engaged with the plurality of illumination lamps through a fitting engagement with the case; A power supply unit for supplying power to the illumination lamps and a pair of terminals disposed in parallel between both terminals of the illumination unit for lighting, and one terminal thereof is grounded through the case to firstly cut off surge voltage, A lightning protection unit for secondarily blocking a surge voltage that is not normally blocked; And an internal moisture prevention part inserted in a plurality of flow holes formed in a partition wall dividing the interior of the lighting device main body and preventing condensation from being introduced into the plurality of illumination lights and the lightning protection part .

In order to achieve the above object, the lightning protection unit of the LED landscape lighting apparatus having the lightning protection function and the internal moisture prevention function of the present invention is arranged in parallel between the both terminals of the power supply unit and the landscape lighting apparatus, A pair of abnormal voltage suppressors for primarily protecting the illumination device from the surge voltage; And one side is connected in parallel with each of the pair of the abnormal voltage suppressors and grounded, and the other side is arranged in parallel with the connection line of the power supply unit and the illuminating device, And a pair of gas discharge tubes for protecting the illumination device, wherein the pair of abnormal voltage suppressors are disposed in parallel with each other nearer to the illumination device than the pair of gas discharge tubes .

In order to attain the above object, the internal moisture barrier of the LED illumination device having the lightning protection function and the internal moisture prevention function of the present invention is an air valve having a screw-in structure with a built-in membrane.

In order to attain the above object, the air valve of the LED landscape lighting apparatus having the lightning protection function and the internal moisture prevention function of the present invention is characterized in that the material of the main body is one of polyamide, polycarbonate and stainless steel.

In order to achieve the above object, the LED lighting apparatus of the present invention is characterized in that a cross section of its rim is formed in a concavo-convex shape in order to expand a heat radiation area, A portion coupled to the case is formed in a shape corresponding to an end surface of the case so as to be coupled to the case.

According to an aspect of the present invention, there is provided an LED landscape lighting apparatus having a lightning protection function and an internal moisture-proof function, the apparatus including: a lamp unit disposed between the case and the support frame for supporting the lamp unit, And a plurality of auxiliary supports coupled to each other.

In order to attain the above object, the auxiliary support of the LED illumination device having the lightning protection function and the internal moisture prevention function according to the present invention is formed in a shape corresponding to the end surface of the case so as to be fitted to the case do.

In order to attain the above object, the cover of the LED screen lighting apparatus having a lightning protection function and an internal moisture proof function of the present invention has a hard coating layer for increasing hardness, the hard coating layer being made of dipentaerythritol hexaacrylate (DPHA) 15 to 35 parts by weight of hydroxyethylhydroxypropylcellulose, 10 to 20 parts by weight of octadecyl 3,5-di-t-butyl-4-hydroxyhydrocinnamate, 10 to 20 parts by weight of ethyl 2- [3- And 7-15 parts by weight of (6-nitrobenzo [d] thiazol-2-yl) ureido] acetate.

Specific details of other embodiments are included in the " Detailed Description of the Invention "and the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and / or features of the present invention and the manner of achieving them will be apparent by reference to various embodiments described in detail below with reference to the accompanying drawings.

However, the present invention is not limited to the configurations of the embodiments described below, but may be embodied in various other forms, and each embodiment disclosed in this specification is intended to be illustrative only, It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

According to the present invention, it is possible not only to quickly protect the landscape lighting device from the sudden surge voltage inflow, but also to secondarily block the surge voltage that is not primarily blocked, It becomes possible to protect it.

In addition, when used outdoors for a long time, the temperature difference is repeated, thereby preventing condensation that may occur due to moisture flowing into the interior of the lighting device, thereby improving the safety and reliability of the product and extending the service life of the product.

1 is a perspective view of an LED landscape lighting apparatus having a lightning protection function and an internal moisture prevention function according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of an illumination lamp and an auxiliary support in the LED landscape lighting apparatus shown in FIG. 1. FIG.
FIG. 3 is a view showing a combined structure of an illumination lamp and an auxiliary support in the LED landscape lighting device shown in FIG. 1. FIG.
FIG. 4 is a table summarizing the results of measurement of the diffusion rate using an angle photometer in an LED landscape lighting apparatus having a lightning protection function and an internal moisture prevention function according to the present invention.
5 is a table summarizing the compositions of the specimens of Examples 1 to 2 and Comparative Examples 1 to 4 shown in Fig.
FIG. 6 is a table summarizing the results of measurement and evaluation of characteristics of a specimen manufactured for application to an LED landscape lighting apparatus having a lightning protection function and an internal moisture prevention function according to the present invention.
7 is a perspective view of an LED landscape lighting apparatus having a lightning protection function and an internal moisture prevention function according to another embodiment of the present invention.
8 is a block diagram of the lightning protection unit in the LED landscape lighting apparatus shown in Fig.
9 is an external photograph of the first embodiment of the internal moisture prevention portion 11 in the LED landscape lighting apparatus shown in Fig.
10 is a sectional view of the first embodiment of the internal moisture prevention portion 11 shown in Fig.
11 is an external photograph of the second embodiment of the internal moisture prevention portion 11 in the LED landscape lighting apparatus shown in Fig.
12 is a sectional view of the second embodiment of the internal moisture prevention portion 11 shown in Fig.
13 is an external photograph of the third embodiment of the internal moisture prevention portion 11 in the LED landscape lighting device shown in Fig.
14 is a sectional view of the third embodiment of the internal moisture prevention portion 11 shown in Fig.
15 is a cross-sectional view of the internal moisture prevention portion 11 inserted into the partition wall inside the LED landscape lighting apparatus main body shown in Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Before describing the present invention in detail, terms and words used herein should not be construed as being unconditionally limited in a conventional or dictionary sense, and the inventor of the present invention should not be interpreted in the best way The concepts of various terms can be properly defined and used.

Furthermore, it should be understood that these terms and words are to be construed in light of the meanings and concepts consistent with the technical idea of the present invention.

In other words, the terminology used herein is for the purpose of describing preferred embodiments of the present invention, and is not intended to specifically limit the contents of the present invention.

It should be understood that these terms are defined terms in view of the various possibilities of the present invention.

Further, in this specification, the singular forms "a", "an," and "the" include plural referents unless the context clearly dictates otherwise.

Also, it should be understood that the present invention can include a single meaning even if it is similarly expressed in plural.

Where an element is referred to as "comprising" another element throughout this specification, the term " comprises " does not exclude any other element, It can mean that you can do it.

Furthermore, in the case where a component is described as being "inside or connected to another component", the component may be directly connected or in contact with another component.

In addition, there may be a third component or means for fixing or connecting the component to another component when the component is spaced apart from the first component by a predetermined distance .

On the other hand, it should be noted that the description of the third component or means may be omitted.

On the other hand, it should be understood that there is no third component or means when an element is described as being "directly connected" or "directly connected" to another element.

Likewise, other expressions that describe the relationship between the components, such as "between" and "immediately", or "neighboring to" and "directly adjacent to" .

In this specification, terms such as "one side", "other side", "one side", "other side", "first", "second", and the like refer to one component It is used to make it clearly distinguishable from element.

It should be understood, however, that such terms do not limit the meaning of the component.

It is also to be understood that terms related to positions such as "top", "bottom", "left", "right" in this specification, if used, refer to relative positions in the drawings for the respective components.

Further, it should not be understood that these position-related terms refer to absolute positions unless an absolute position is specified for these positions.

Furthermore, in the specification of the present invention, the terms "part", "unit", "module", "apparatus" and the like mean units capable of handling one or more functions or operations, if used.

It should be appreciated that this may be implemented in hardware or software, or a combination of hardware and software.

In the drawings attached to the present specification, the size, position, coupling relationship, and the like of each constituent element of the present invention may be partially or exaggerated or omitted or omitted for the sake of clarity of description of the present invention or for convenience of explanation May be described, and therefore the proportion or scale may not be rigorous.

Further, in the following description of the present invention, a detailed description of a configuration that is considered to be unnecessarily blurring the gist of the present invention, for example, a known technology including the prior art may be omitted.

Configuration and Operation of LED Illumination System

1 is a perspective view of an LED landscape lighting apparatus having a lightning protection function and an internal moisture prevention function according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of an illumination lamp and an auxiliary support in the LED landscape lighting apparatus shown in FIG. 1. FIG.

FIG. 3 is a view showing a combined structure of an illumination lamp and an auxiliary support in the LED landscape lighting device shown in FIG. 1. FIG.

1 to 3, the components of the LED landscape lighting apparatus having the lightning protection function and the internal moisture prevention function according to the present invention will be described in brief as follows.

The plurality of illumination lights 110 may be configured to include a circuit board 210, a landscape lighting device 220, a case 230, and a cover 240.

The auxiliary support 120 may have a structure to be fitted to the case 230 of the illumination lamp 110.

3, the auxiliary support 120 may be formed in a shape corresponding to a rim of the case 230 of the illumination lamp 110, that is, in a concavo-convex shape.

The circuit board 210 includes a plurality of circuit elements, and the circuit board 210 may be implemented as a printed circuit board (PCB) of a metal material.

The metal PCB can effectively transmit the heat generated from the landscape lighting device 220 to the case 230 having the heat radiation performance through the metal material.

The landscape lighting device 220 is disposed on the circuit board 210 and includes a plurality of LED lamps for emitting light.

A plurality of LED lamps can emit light by being supplied with power from a power supply unit (not shown).

The case 230 has a receiving space therein to accommodate the circuit board 210 and the landscape lighting device 220.

The case 230 serves not only to casing the internal components of the LED screen lighting apparatus 100 but also to serve as a heat discharging body.

That is, the case 230 may have a frame line shape of a concavo-convex shape in order to radiate the heat generated from the landscape lighting device 220 to the outside.

In other words, the case 230 may be formed so that the rim of the cross section of the case 230 is bent to increase the heat radiating area.

In this way, the case 230 is formed in an expanded shape of the heat radiating area, so that the heat generated from the landscape lighting device 220 can be emitted to the outside.

Therefore, it is not necessary to provide a separate heat radiator at the lower part of the circuit board 210, thereby reducing the manufacturing cost of the LED landscape lighting device 100 and shortening the manufacturing time.

The cover 240 functions to cover the circuit board 210 and the landscape lighting device 220 in combination with the case 230 at an upper portion of the case 230.

In addition, it functions to protect the interior of the LED landscape lighting device 100 from dust, moisture, and the like, and serves to transmit or diffuse light.

A stopper 250 is coupled to both ends of the case 240 so as to cover both ends of the case 230. A fixing bar 260 is coupled to an upper portion of the cover 240 to fix the cover 240 thereto. .

The cover 240 may be made of a material such as ordinary transparent glass or acrylic.

However, the cover 240 may be made of a translucent material because the LED, which emits intense light, may cause eye fatigue when exposed directly to the eyes of the user.

In addition, since the LED has good linearity but is less diffusive, the LED landscape lighting device 100 can diffuse the light generated by the LED 240 using the cover 240.

For this purpose, the cover 240 is preferably made of 10 to 20 parts by weight of calcium aluminosilicate, 5 to 15 parts by weight of hydroxyethylhydroxypropylcellulose, 2 to 3 parts by weight of soda ash, octadecyl 3 1.5 to 4.5 parts by weight of 5-di-t-butyl-4-hydroxyhydrocinnamate, 1.3 to 3.5 parts by weight of 2-aminophenol-4-sulfonic acid and ethyl 2- [3- (6-nitrobenzo [ Thiazol-2-yl) ureido] acetate in an amount of 0.5 to 1.5 parts by weight.

In order to measure the diffusion rate of the translucent cover 240, the following experiment was performed.

Fabrication of LED illumination device cover 240

As Example 1, 100 g of a polycarbonate resin, 10 g of calcium aluminosilicate, 5 g of hydroxyethylhydroxypropylcellulose, 2 g of soda ash, 1.5 g of octadecyl 3,5-di-t-butyl-4-hydroxyhydrocinnamate, 1.3 g of 2-aminophenol-4-sulfonic acid and 0.5 g of ethyl 2- [3- (6-nitrobenzo [d] thiazol-2-yl) ureido] acetate were mixed.

In Example 2, 100 g of polycarbonate resin, 20 g of calcium aluminosilicate, 15 g of hydroxyethylhydroxypropylcellulose, 3 g of soda ash, 4.5 g of octadecyl 3,5-di-t-butyl-4-hydroxyhydrocinnamate, 3.5 g of 2-aminophenol-4-sulfonic acid and 1.5 g of ethyl 2- [3- (6-nitrobenzo [d] thiazol-2-yl) ureido] acetate were mixed.

In Example 3, 100 g of polycarbonate resin, 15 g of calcium aluminosilicate, 10 g of hydroxyethylhydroxypropylcellulose, 2.5 g of soda ash, 3.5 g of octadecyl 3,5-di-t-butyl-4-hydroxyhydrocinnamate , 2.4 g of 2-aminophenol-4-sulfonic acid and 1 g of ethyl 2- [3- (6-nitrobenzo [d] thiazol-2-yl) ureido] acetate were mixed.

In Comparative Example 1, 100 g of polycarbonate resin, 25 g of calcium aluminosilicate, 5 g of hydroxyethylhydroxypropylcellulose, 2 g of soda ash, 1.5 g of octadecyl 3,5-di-t-butyl-4-hydroxyhydrocinnamate, Sulfonic acid and 0.5 g of ethyl 2- [3- (6-nitrobenzo [d] thiazol-2-yl) ureido] acetate were mixed.

In Comparative Example 2, 100 g of polycarbonate resin, 10 g of calcium aluminosilicate, 20 g of hydroxyethylhydroxypropylcellulose, 2 g of soda ash, 1.5 g of octadecyl 3,5-di-t-butyl-4-hydroxyhydrocinnamate, 1.3 g of 2-aminophenol-4-sulfonic acid and 0.5 g of ethyl 2- [3- (6-nitrobenzo [d] thiazol-2-yl) ureido] acetate were mixed.

In Comparative Example 3, 100 g of polycarbonate resin, 5 g of calcium aluminosilicate, 15 g of hydroxyethylhydroxypropylcellulose, 3 g of soda ash, 4.5 g of octadecyl 3,5-di-t-butyl-4-hydroxyhydrocinnamate, 3.5 g of 2-aminophenol-4-sulfonic acid and 1.5 g of ethyl 2- [3- (6-nitrobenzo [d] thiazol-2-yl) ureido] acetate were mixed.

In Comparative Example 4, 100 g of polycarbonate resin, 20 g of calcium aluminosilicate, 1 g of hydroxyethylhydroxypropylcellulose, 3 g of soda ash, 4.5 g of octadecyl 3,5-di-t-butyl-4-hydroxyhydrocinnamate, 3.5 g of 2-aminophenol-4-sulfonic acid and 2.0 g of ethyl 2- [3- (6-nitrobenzo [d] thiazol-2-yl) ureido] acetate were mixed.

In Comparative Example 5, 100 g of polycarbonate resin, 20 g of calcium aluminosilicate, 15 g of hydroxyethylhydroxypropylcellulose, 5 g of soda ash, 1.0 g of octadecyl 3,5-di-t-butyl-4-hydroxyhydrocinnamate, 1.3 g of 2-aminophenol-4-sulfonic acid and 0.5 g of ethyl 2- [3- (6-nitrobenzo [d] thiazol-2-yl) ureido] acetate were mixed.

In order to measure the transparency of the translucent plate prepared in Examples 1 to 3 and Comparative Examples 1 to 5, the object was placed on the upper surface of the translucent plate and visually confirmed.

The diffusivities of the semitransparent plates prepared in Examples 1 to 3 and Comparative Examples 1 to 5 were measured at transmission angles of 0 degree, 20 degrees and 70 degrees with respect to the normal incident light with a goniophotometer (GC-5000L, (I _?, I _?? , I _?? ) were measured and the diffusivity of the translucent plate was calculated based on the formula (I _?? + I _?? ) / (2 _?? I _? ) X 100.

The semitransparent plate prepared in Examples 1 to 3 and Comparative Examples 1 to 5 was visually inspected, and it was confirmed that all the subjects were not clearly visible and were translucent.

FIG. 4 is a table summarizing the results of measurement of the diffusion rate using an angle photometer in an LED landscape lighting apparatus having a lightning protection function and an internal moisture prevention function according to the present invention.

That is, the results of measuring the diffusing ratios of Examples 1 to 3 and Comparative Examples 1 to 5 using the above-mentioned goniophotometer are summarized in FIG.

4, the translucent plate prepared in Examples 1 to 3 exhibited a diffusivity of 91% or more, but in the case of the translucent plate prepared in Comparative Examples 1 to 5, the diffusion rate of about 77 to 80% Respectively.

In addition, in one embodiment of the present invention, a hard coating layer may be formed on the cover 240 to further strengthen the hardness thereof, thereby preventing the cover 240 from being damaged even when an external strong impact is applied.

The hard coating layer may contain 15 to 35 parts by weight of hydroxyethylhydroxypropylcellulose, 100 parts by weight of octadecyl 3,5-di-t-butyl-4-hydroxystearate, 100 parts by weight of dipentaerythritol hexaacrylate (DPHA) 10 to 20 parts by weight of hydroxyhydrocinnamate and 7 to 15 parts by weight of ethyl 2- [3- (6-nitrobenzo [d] thiazol-2-yl) ureido] acetate.

Manufacture of specimens

In order to measure the hardness, transmittance, heat resistance, adhesion, flexibility and the like of the hard coating layer including the above materials, the following experiment was conducted.

In Example 1, 100 g of dipentaerythritol hexaacrylate, 15 g of hydroxyethylhydroxypropylcellulose, 10 g of octadecyl 3,5-di-t-butyl-4-hydroxyhydrocinnamate, 10 g of ethyl 2- [3- (6-Nitrobenzo [d] thiazol-2-yl) ureido] acetate (7 g) was mixed with acetone, and a specimen having a thickness of 20 microns was prepared by injection molding and acetone was volatilized.

In Example 2, 100 g of dipentaerythritol hexaacrylate, 35 g of hydroxyethylhydroxypropylcellulose, 20 g of octadecyl 3,5-di-t-butyl-4-hydroxyhydrocinnamate, 20 g of ethyl 2- [3- (6-Nitrobenzo [d] thiazol-2-yl) ureido] acetate was mixed with acetone to prepare a sample in the same manner as in Example 1.

In Comparative Example 1, 100 g of dipentaerythritol hexaacrylate, 40 g of hydroxyethylhydroxypropylcellulose, 5 g of octadecyl 3,5-di-t-butyl-4-hydroxyhydrocinnamate, (6-Nitrobenzo [d] thiazol-2-yl) ureido] acetate was mixed with acetone to prepare a sample in the same manner as in Example 1.

In Comparative Example 2, 100 g of dipentaerythritol hexaacrylate, 10 g of hydroxyethylhydroxypropylcellulose, 30 g of octadecyl 3,5-di-t-butyl-4-hydroxyhydrocinnamate, 30 g of ethyl 2- [3- (6-Nitrobenzo [d] thiazol-2-yl) ureido] acetate was mixed with acetone to prepare a sample in the same manner as in Example 1.

In Comparative Example 3, 100 g of dipentaerythritol hexaacrylate, 25 g of hydroxyethylhydroxypropylcellulose, 15 g of octadecyl 3,5-di-t-butyl-4-hydroxyhydrocinnamate, 15 g of ethyl 2- [3- (6-Nitrobenzo [d] thiazol-2-yl) ureido] acetate was mixed with acetone to prepare a sample in the same manner as in Example 1.

In Comparative Example 4, 100 g of dipentaerythritol hexaacrylate, 20 g of hydroxyethylhydroxypropylcellulose, 10 g of octadecyl 3,5-di-t-butyl-4-hydroxyhydrocinnamate, 10 g of ethyl 2- [3- (6-Nitrobenzo [d] thiazol-2-yl) ureido] acetate was mixed with acetone to prepare a sample in the same manner as in Example 1.

5 is a table summarizing the compositions of the specimens of Examples 1 to 2 and Comparative Examples 1 to 4 shown in Fig.

As shown in FIG. 5, the compositions shown in Examples 1 to 2 and Comparative Examples 1 to 4 are summarized in FIG. 5, and the unit is gram (g).

Hardness of the specimens prepared in Examples 1 to 2 and Comparative Examples 1 to 4 shown in Fig. 4 were measured and evaluated based on the following items.

1) Pencil hardness was measured by ASTM D3502 (pencil hardness tester).

2) The transmittance was measured by UV-vis spectrum (DARSA PRO-5000 SYSTEM).

3) Heat resistance was measured at 90 ℃ for 4 hours after cracking and bending.

4) Adhesiveness was evaluated by evaluating whether or not peeling phenomenon occurred by making a line at 2mm intervals on the specimen, and then visually inspecting the specimen after strong adhesion of TAPE.

5) Flexibility was evaluated by cracking by 180 degree bending after 12 hours of coating.

FIG. 6 is a table summarizing the results of measurement and evaluation of characteristics of a specimen manufactured for application to an LED landscape lighting apparatus having a lightning protection function and an internal moisture prevention function according to the present invention.

That is, the test pieces prepared in Examples 1 to 2 and Comparative Examples 1 to 4 were measured and evaluated on the basis of the following characteristics, and the results are shown in FIG.

As can be seen from FIG. 6, Examples 1 and 2 have excellent properties in terms of pencil hardness, transmittance, heat resistance, adhesion, and flexibility. On the other hand, in Comparative Examples 1 to 4, excellent transmittance and adhesion But it has poor properties in terms of pencil hardness, heat resistance and flexibility.

7 is a perspective view of an LED landscape lighting apparatus having a lightning protection function and an internal moisture prevention function according to another embodiment of the present invention.

Referring to FIG. 7, an LED landscape lighting apparatus 400 according to another embodiment of the present invention may include a plurality of illumination lamps 410 and supports 420.

Here, the plurality of illumination lamps 410 have the same structure and function as those of the illumination lamps 110 employed in the LED landscape illumination device 100 of FIG. 1, so the description thereof will be omitted in the present embodiment.

The support base 420 is engaged with the plurality of illumination lamps 410 through the fitting of each of the illumination lamps 410 (refer to 230 in FIG. 2) to support the plurality of illumination lamps 410.

For this purpose, the support part 420 may be formed in a shape corresponding to the edge section of the case.

That is, the support base 420 is formed in a concavo-convex shape so as to be engaged with the case.

The structure in which the support member 420 is fitted to the case of each of the illumination lamps 410 is the same as the fitting structure of the case 230 of the illumination lamps 110 and the auxiliary support member 120 shown in FIG. 7, the coupling structure between the support stand 420 and the case of the illumination lamp 410 is not shown.

Lightning protection unit

8 is a block diagram of the lightning protection unit in the LED landscape lighting apparatus shown in Fig.

For reference, the external configuration of the LED landscape lighting apparatus of FIG. 8 is the same as or similar to the LED landscape lighting apparatus 100, 400 shown in FIG. 1 or FIG.

Referring to FIG. 8, an LED landscape lighting apparatus 500 according to an embodiment of the present invention includes a power supply unit 510, a pair of abnormal voltage suppressors 522 and 524, a pair of gas discharge tubes 532, 534, a landscape lighting device 540, and a case 550.

Of course, the LED landscape lighting apparatus 500 may include some or all of the components of the LED landscape lighting apparatus 100, 400 shown in FIG. 1 or FIG.

A pair of transient voltage suppressors (TVS) 522 and 524 are connected in parallel between the power supply unit 510 and both the terminals of the landscape lighting apparatus 540 and the landscape lighting apparatus 540 To protect the landscape lighting device from primary surge voltage.

One pair of gas discharge tubes (GDT) 532 and 534 are grounded in parallel with the pair of abnormal voltage suppressors 522 and 524, respectively, and the other is connected to the power supply unit 510, And the landscape lighting device 540 so as to secondarily protect the landscape lighting device from the surge voltage.

That is, in contrast to the case where the primary protection from the surge voltage is rapidly operated in the pair of the abnormal voltage suppressors 522 and 524, the secondary protection from the surge voltage is performed in order to operate more stably, A pair of gas discharge tubes 532 and 534 whose operation speed is slower than the suppressors 522 and 524 are used.

This makes it possible to protect the landscape lighting device from the tertiary surge voltage that can occur after the secondary protection from the surge voltage.

The ground may be grounded through the case 550.

The operation principle of the pair of gas discharge tubes 532 and 534 will be described in more detail as follows.

A gas discharge tube is a discharge tube with a gas at an appropriate density in a tube. It has less internal resistance than a tube, can handle a large current, and exhibits a constant hysteresis.

An insulation spark gap is usually used for the purpose of ensuring equipotential bonding between two different earth electrodes or in the event of an overvoltage between insulated metal bodies.

However, under steady-state conditions, the insulation spark gap has a very high insulation resistance value (e.g., 10 G Ohm). Once the constant voltage value (UAG, UAS) is reached, the spark gap shorts instantaneously. Charge carriers are always present somewhat within the discharge zone, which travels fast towards the electrons by means of an electric field. The electrons accelerated into the gas discharge tube collide with the gas molecules filled in the gas discharge tube to cause the electrons to separate from the gas molecules. This rapidly flowed electric current by the rapidly increasing charge carriers, The lighting device is safely protected.

Accordingly, when the LED lighting apparatus 500 is installed on the ground, it firstly blocks the surge voltage that is suddenly introduced through the pair of abnormal voltage suppressors 522 and 524, The surge voltage is secondarily cut off through the pair of gas discharge tubes 532 and 534 so that breakage of the screen lighting device due to abrupt surge voltage caused by lightning or the like can be prevented in advance.

Internal moisture barrier

9 is an external photograph of the first embodiment of the internal moisture prevention portion 11 in the LED landscape lighting apparatus shown in Fig.

10 is a sectional view of the first embodiment of the internal moisture prevention portion 11 shown in Fig.

11 is an external photograph of the second embodiment of the internal moisture prevention portion 11 in the LED landscape lighting apparatus shown in Fig.

12 is a sectional view of the second embodiment of the internal moisture prevention portion 11 shown in Fig.

13 is an external photograph of the third embodiment of the internal moisture prevention portion 11 in the LED landscape lighting device shown in Fig.

14 is a sectional view of the third embodiment of the internal moisture prevention portion 11 shown in Fig.

15 is a cross-sectional view of the internal moisture prevention portion 11 inserted into the partition wall inside the LED landscape lighting apparatus main body shown in Fig.

In general, harsh environmental conditions or volatile climatic conditions cause pressure changes that stress the ceiling of the body of the outdoor lighting system.

If this phenomenon is repeated, the sealing may be damaged, and various contaminating particles may penetrate, resulting in failure of sensitive electronic parts.

In particular, since the landscape lighting device is mainly used for outdoor use at night and is turned off during the nighttime, the temperature difference is repeated when used for a long period of time, so that moisture enters the interior of the lighting device and condensation occurs.

Therefore, in each module of the landscape lighting device of the present invention, an air valve is mounted to prevent condensation or the like formed inside the lighting device.

The air valve has a membrane inside the body and provides a stable mounting force to the air valve body with a rigid screw-in structure and o-ring to improve safety.

That is, the membrane has billions of pores that are 700 times larger than air molecules, allowing gas to flow freely through the body of the lighting system, thereby preventing stress on the sealing.

In addition, the pore size of the membrane is 20,000 times smaller than the water drop to prevent penetration of water, dust and various contaminants.

As the material of the air valve body, the first embodiment is polyamide, the second embodiment is polycarbonate, and the third embodiment is stainless steel.

15, in the partition wall 2-1 for dividing the interior of the lighting apparatus main body 2 into a lamp chamber and a wiring terminal chamber, a plurality of flow holes 10 are drilled to allow air circulation inside and outside , The present invention inserts the internal moisture prevention portion (11) into the flow hole (10).

That is, the internal moisture preventing portion 11 formed with the screw portion 15 on the lower side is inserted into the flow hole 10, and the nut 16 is screwed on the inside and outside of the dividing wall 2-1, -1).

Accordingly, the outdoor lighting device of the present invention prevents external moisture from penetrating into the interior of the lighting device, and releases the moisture and vapor generated therein, so that even when the outdoor lighting device is used for a long time, To prevent condensation, etc.

In addition, it prevents penetration of various contaminating particles and liquid into the enclosed lighting device body, and it helps the effective pressure equilibrium and dew condensation with excellent air permeability, thereby improving the safety and reliability of the product and extending the life of the product have.

As described above, the present invention can safely block the surge voltage that is suddenly introduced due to lightning or the like to prevent the breakdown and damage of the landscape lighting device in advance, prevent moisture from entering the outside, And to provide an LED landscape lighting device having a lightning protection function and an internal moisture prevention function which can be performed.

Accordingly, it is an object of the present invention to firstly and quickly protect a landscape lighting device from sudden surge voltage inflow, and to more securely protect a landscape lighting device by secondarily blocking a surge voltage that is not primarily blocked .

In addition, when used outdoors for a long time, the temperature difference is repeated, thereby preventing condensation that may occur due to moisture flowing into the interior of the lighting device, thereby improving the safety and reliability of the product and extending the service life of the product.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

In addition, since the present invention can be embodied in various other forms, the present invention is not limited by the above description, and the above description is intended to be a complete description of the present invention, It will be understood by those of ordinary skill in the art that the present invention is only provided to fully inform the person skilled in the art of the scope of the present invention and that the present invention is only defined by the claims of the claims.

110, 410: illumination light
120: auxiliary support
130, 420: Support
210: circuit board
220, 540: landscape lighting fixture
230, 550: Case
240: cover
510: Power supply
522, 524: a pair of abnormal voltage suppressors
532, 534: a pair of gas discharge tubes

Claims (8)

A circuit board having a plurality of circuit elements, a landscape lighting apparatus disposed on the circuit board and having a plurality of LED lamps for emitting light, a circuit board accommodating the circuit board and the landscape lighting apparatus, And a cover for covering the circuit board and the light fixture in combination with the case at an upper portion of the case;
A support for supporting the plurality of illumination lamps by being engaged with the plurality of illumination lamps through a fitting engagement with the case;
A power supply unit for supplying power to the illumination lamps and a pair of terminals disposed in parallel between both terminals of the illumination unit for lighting, and one terminal thereof is grounded through the case to firstly cut off surge voltage, A lightning protection unit for secondarily blocking a surge voltage that is not normally blocked; And
An internal moisture preventing portion inserted in a plurality of flow holes formed in a partition wall dividing the interior of the lighting apparatus main body to prevent condensation from being introduced into the plurality of illumination lamps and the lightning protection portion;
/ RTI >
The lightning protection unit
A pair of abnormal voltage suppressors arranged in parallel between the power supply unit and the both ends of the landscape lighting device to protect the landscape lighting device from the suddenly inflowing surge voltage; And
One side of which is connected in parallel with each of the pair of the abnormal voltage suppressors and grounded and the other side of which is arranged in parallel with the connection line of the power supply unit and the illumination unit, A pair of gas discharge tubes for protecting the landscape lighting device;
Lt; / RTI >
Wherein the pair of abnormal voltage suppressors are disposed in parallel with each other in a position closer to the landscape lighting device than the pair of gas discharge tubes.
delete The method according to claim 1,
The internal moisture-
Characterized in that the air valve is a screw-in air valve having a built-in membrane.
An LED lighting device with lightning protection and internal moisture protection.
The method of claim 3,
The air valve
Characterized in that the material of the main body is one of polyamide, polycarbonate and stainless steel.
An LED lighting device with lightning protection and internal moisture protection.
The method according to claim 1,
In order to expand the heat dissipation area, the casing is formed in a concave-
Wherein the support part is formed in a shape corresponding to a cross-section of an edge of the case so as to be engaged with the case, the part being coupled with the case.
The method according to claim 1,
A plurality of auxiliary supports disposed between the case and the support and supporting the illumination lamp, the auxiliary supports being fitted to the case and bolted to the support;
Further comprising a light-shielding protection function and an internal moisture-proof function.
The method according to claim 6,
The auxiliary support
Wherein the case is formed in a shape corresponding to an end surface of the case so as to be fitted to the case.
The method according to claim 1,
The cover
Wherein the hard coat layer comprises 15 to 35 parts by weight of hydroxyethylhydroxypropyl cellulose, 100 parts by weight of octadecyl 3,5-di (tert-butoxycarbonyl) ethyl acrylate, 100 parts by weight of dipentaerythritol hexaacrylate (DPHA) 10 to 20 parts by weight of -t-butyl-4-hydroxyhydrocinnamate and 7 to 15 parts by weight of ethyl 2- [3- (6-nitrobenzo [d] thiazol- Wherein the light emitting diode is formed of a material having a lightning protection function and an internal moisture prevention function.

Images