KR101130324B1 - Led illumination apparatus having excellent heat dissipative emission performance and lighting bolt protection function - Google Patents

Abstract

PURPOSE: An LED scene lighting apparatus is provided to improve heat radiation performance by expanding a radiating area and to prevent the damage due to lightning in advance. CONSTITUTION: A plurality of lamps(110) comprises a circuit board, a heating element, a case, and a cover. The circuit board comprises a plurality of circuit devices. The heating element comprises a plurality of LED lamps. The heating element is arranged on the top of the circuit board. The case accepts the circuit board and the heating element. The case emits heat from the heating element to outside. The cover covers up the circuit board and the heating element. A support stand(130) supports a plurality of lamps. One side terminal of a resistance device for lightning protection is grounded through the case.

Description

LED landscape lighting device with excellent heat dissipation and lightning protection {LED ILLUMINATION APPARATUS HAVING EXCELLENT HEAT DISSIPATIVE EMISSION PERFORMANCE AND LIGHTING BOLT PROTECTION FUNCTION}

Embodiments of the present invention relate to a landscape lighting apparatus, and more particularly, to an LED landscape lighting apparatus having excellent heat dissipation performance and lightning protection.

Recently, as the economic level improves, much attention is paid to the urban landscape as well as the pleasant living environment. In order to create a more atmospheric and beautiful city scenery, for example, a lot of effort is put into street lamps, building exterior wall lights, and bridge lights along rivers that flow through the city.

Conventionally, neon lights, fluorescent lights, and the like are mainly used as lightings used for urban landscapes, but they have a disadvantage in that high power consumption and short lifespan require frequent maintenance. Since the number of lights installed throughout the city is considerable, such problems cannot be overlooked, and in addition, in the case of neon or fluorescent lamps, the color of the lights cannot be changed in various ways, so that various production is impossible.

Therefore, as an alternative to neon lamps and incandescent lamps, landscape lighting apparatuses using LED elements have been proposed. LEDs are attracting attention in the field of landscape lighting because they have low power consumption and long life, requiring little maintenance and realizing various colors by mixing LED colors of R, G, and B.

On the other hand, there is a related prior art Patent Publication No. 2010-12114.

One embodiment of the present invention provides an LED landscape lighting apparatus that can improve the heat dissipation performance by expanding the heat dissipation area through the case structure of the lamp.

One embodiment of the present invention provides an LED landscape lighting apparatus that can prevent damage caused by lightning strikes by employing a resistance element for lightning protection.

The problem to be solved by the present invention is not limited to the problem (s) mentioned above, and other object (s) not mentioned will be clearly understood by those skilled in the art from the following description.

An LED landscape lighting apparatus having excellent heat dissipation performance and lightning protection according to an embodiment of the present invention includes a circuit board having a plurality of circuit elements, and a plurality of LED lamps disposed on the circuit board and emitting light. A plurality of heating elements, a case accommodating the circuit board and the heat generating element and dissipating heat generated from the heat generating element to the outside, and a cover covering the circuit board and the heat generating element by combining with the case at an upper portion of the case. Lighting fixtures; A support for fastening with the plurality of lamps through fitting with the case to support the plurality of lamps; And a lightning protection resistor disposed in parallel between a power supply for supplying power to the lamp and both terminals of the heating element, and one terminal of which is grounded through the case.

The case has a cross-section of the rim is formed in the shape of the concave-convex shape for the expansion of the heat dissipation area, and the support is formed in a shape corresponding to the edge cross-section of the case so that the support can be fitted with the case Can be.

LED landscape lighting apparatus having an excellent heat dissipation performance and lightning protection function according to an embodiment of the present invention is disposed between the case and the support to support the lamp, the fitting is coupled to the case and bolted to the support It may further include a plurality of auxiliary support.

The auxiliary support may be formed in a shape corresponding to the edge cross section of the case to be fitted and coupled to the case.

The cover is provided with a hard coating layer for increasing the hardness, the hard coating layer is based on 100 parts by weight of dipentaerythritol hexaacrylate (DPHA), 15 to 35 parts by weight of hydroxy ethyl hydroxy propyl cellulose, octadecyl 3, 10 to 20 parts by weight of 5-di-t-butyl-4-hydroxy hydrocinnamate, ethyl 2- [3- (6-nitrobenzol [d] thiazol-2-yl) ureido] acetate 7 to 15 parts by weight It may be formed of a material including a part.

Specific details of other embodiments are included in the detailed description and the accompanying drawings.

Advantages and / or features of the present invention and methods for achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, only the present embodiments to make the disclosure of the present invention complete, and common knowledge in the art to which the present invention pertains. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

According to one embodiment of the present invention, the heat dissipation performance can be improved by expanding the heat dissipation area through improving the case structure of the lamp.

According to one embodiment of the present invention, it is possible to prevent damage due to lightning by adopting a resistance element for lightning protection.

1 is a perspective view of an LED landscape lighting apparatus having excellent heat dissipation performance according to an embodiment of the present invention.
2 is an exploded perspective view of the lamp and the auxiliary support of FIG.
3 is a view showing a coupling structure of the lamp and the auxiliary support of FIG.
4 is a perspective view of the LED landscape lighting apparatus having an excellent heat dissipation performance according to another embodiment of the present invention.
5 is a view illustrating an LED landscape lighting apparatus having an excellent lightning protection function according to an embodiment of the present invention.

It serves to support the lamp 110 auxiliary.

The auxiliary support 120 may be fitted to the lamp 110 and bolted to the support 130.

The lighting 110 and the auxiliary support 120 will be described later with reference to FIG. 2.

The support 130 may be bolted to the auxiliary support 120 to support the lamp 110.

FIG. 2 is an exploded perspective view of the lamp 110 and the auxiliary support 120 of FIG. 1.

As shown in FIG. 2, the lamp 110 may include a circuit board 210, a heating element 220, a case 230, and a cover 240.

The auxiliary support 120 may have a structure that is fitted with the case 230 of the lamp 110. To this end, the auxiliary support 120 may be formed in a shape corresponding to the cross section of the edge of the case 230 of the lamp 110, that is, as shown in FIG. For reference, FIG. 3 is a view illustrating a coupling structure of the lamp 110 and the auxiliary support 120 of FIG. 1.

Hereinafter, the components of the lamp 110 will be described in detail.

The circuit board 210 includes a plurality of circuit elements. In this embodiment, the circuit board 210 may be implemented as a metal printed circuit board (PCB). The metal PCB may effectively transfer heat generated from the heating element 220 to the case 230 having heat dissipation performance through the metal material.

The heating element 220 is disposed above the circuit board 210. The heating element 220 includes a plurality of LED lamps emitting light. The plurality of LED lamps may emit light by driving power supplied from a power supply (not shown).

The case 230 accommodates the circuit board 210 and the heating element 220. To this end, the case 230 may have an accommodation space therein.

The case 230 serves not only to casing the internal components of the LED landscape lighting apparatus 100 but also serves as a heat sink.

That is, the case 230 performs a function of releasing heat generated from the heat generator 220 to the outside. To this end, the case 230 may be formed in the shape of the rim line of the cross-section. In other words, the case 230 may be formed to be bent the edge line of the cross-section in order to increase the heat dissipation area.

As such, the case 230 may be formed to have an extended heat dissipation area, thereby dissipating heat generated from the heat generator 220 to the outside. Therefore, it is not necessary to install a separate heat sink under the circuit board 210, thereby lowering the manufacturing cost of the LED landscape lighting apparatus 100, it is possible to shorten the manufacturing time.

The cover 240 serves to cover the circuit board 210 and the heating element 220 by being coupled to the case 230 from the top of the case 230. The cover 240 serves to protect the interior of the LED landscape lighting apparatus 100 from dust or moisture, and transmits or diffuses light.

Plugs 250 are coupled to both ends of the cover 240 to cover both ends of the case 230, and a fixing bar 260 to fix the cover 240 to an upper portion of the cover 240. ) May be combined.

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 emitting intense light may cause eye fatigue when the LED is directly exposed to the user's eyes. In addition, in the case of the LED is a good straightness, but the diffusion is poor. Therefore, the LED landscape lighting apparatus 100 may diffuse the light generated from the LED using the cover 240.

To this end, the cover 240 is based on 100 parts by weight of polycarbonate resin, 10 to 20 parts by weight of calcium aluminosilicate, 5 to 15 parts by weight of hydroxyethyl hydroxypropyl cellulose, 2-3 parts by weight of soda ash, octadecyl 1.5 to 4.5 parts by weight of 3,5-di-t-butyl-4-hydroxy hydrocinnamate, 1.3 to 3.5 parts by weight of 2-aminophenol-4-sulfonic acid and ethyl 2- [3- (6-nitrobenzol [d ] Thiazol-2-yl) ureido] acetate may be made of a translucent material added 0.5 to 1.5 parts by weight.

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

1. Preparation of translucent plate

In Example 1, 100 g of polycarbonate resin, 10 g of calcium aluminosilicate, 5 g of hydroxyethyl hydroxy propyl cellulose, 2 g of soda ash, 1.5 g of octadecyl 3,5-di-t-butyl-4-hydroxy hydro cinnamate, A translucent plate was prepared in which 1.3 g of 2-aminophenol-4-sulfonic acid and 0.5 g of ethyl 2- [3- (6-nitrobenzol [d] thiazol-2-yl) ureido] acetate were mixed.

In Example 2, 100 g of polycarbonate resin, 20 g of calcium aluminosilicate, 15 g of hydroxyethyl hydroxy propyl cellulose, 3 g of soda ash, 4.5 g of octadecyl 3,5-di-t-butyl-4-hydroxy hydro cinnamate, A translucent plate was prepared in which 3.5 g of 2-aminophenol-4-sulfonic acid and 1.5 g of ethyl 2- [3- (6-nitrobenzol [d] thiazol-2-yl) ureido] acetate were mixed.

In Example 3, 100 g of polycarbonate resin, 15 g of calcium aluminosilicate, 10 g of hydroxyethyl hydroxy propyl cellulose, 2.5 g of soda ash, 3.5 g of octadecyl 3,5-di-t-butyl-4-hydroxy hydro cinnamate , A translucent plate containing 2.4 g of 2-aminophenol-4-sulfonic acid and 1 g of ethyl 2- [3- (6-nitrobenzol [d] thiazol-2-yl) ureido] acetate was prepared.

In Comparative Example 1, 100 g of polycarbonate resin, 25 g of calcium aluminosilicate, 5 g of hydroxyethyl hydroxy propyl cellulose, 2 g of soda ash, octadecyl 3,5-di-t-butyl-4-hydroxy hydro cinnamate, A translucent plate was prepared in which 1.0 g of 2-aminophenol-4-sulfonic acid and 0.5 g of ethyl 2- [3- (6-nitrobenzol [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 hydroxyethyl hydroxy propyl cellulose, 2 g of soda ash, 1.5 g of octadecyl 3,5-di-t-butyl-4-hydroxy hydrocinnamate, A translucent plate was prepared in which 1.3 g of 2-aminophenol-4-sulfonic acid and 0.5 g of ethyl 2- [3- (6-nitrobenzol [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 hydroxyethyl hydroxy propyl cellulose, 3 g of soda ash, 4.5 g of octadecyl 3,5-di-t-butyl-4-hydroxy hydrocinnamate, A translucent plate was prepared in which 3.5 g of 2-aminophenol-4-sulfonic acid and 1.5 g of ethyl 2- [3- (6-nitrobenzol [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 hydroxyethyl hydroxy propyl cellulose, 3 g of soda ash, 4.5 g of octadecyl 3,5-di-t-butyl-4-hydroxy hydrocinnamate, A translucent plate was prepared in which 3.5 g of 2-aminophenol-4-sulfonic acid and 2.0 g of ethyl 2- [3- (6-nitrobenzol [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 hydroxyethyl hydroxy propyl cellulose, 5 g of soda ash, 1.0 g of octadecyl 3,5-di-t-butyl-4-hydroxy hydrocinnamate, A translucent plate was prepared in which 1.3 g of 2-aminophenol-4-sulfonic acid and 0.5 g of ethyl 2- [3- (6-nitrobenzol [d] thiazol-2-yl) ureido] acetate were mixed.

2. Measurement and calculation

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

In addition, the diffusivity of the translucent plates produced through Examples 1 to 3 and Comparative Examples 1 to 5 was changed to transmission angles of 0 ㅀ, 20 ㅀ, and 70 수직 with respect to vertical incident light with a variable photometer (GC-5000L, Denshoku, Japan). Intensities (I ₀ , I ₂₀ , I ₇₀ ) were measured and calculated based on the formula (I ₂₀ + I ₇₀ ) / (2XI ₀ ) X100.

3. Results and Analysis

As a result of visually confirming the translucent plates manufactured through Examples 1 to 3 and Comparative Examples 1 to 5, it was confirmed that all of the subjects were not clearly seen and thus translucent.

On the other hand, using the variable photometer, the results of measuring the diffusion rates of Examples 1 to 3 and Comparative Examples 1 to 5 are summarized in Table 1.

[Table 1]

Referring to Table 1, the translucent plates produced in Examples 1 to 3 exhibited a diffusion rate of 91% or more, but the translucent plates produced in Comparative Examples 1 to 5 had a relatively low diffusion rate of about 77 to 80%. Indicated.

In addition, in one embodiment of the present invention by forming a hard coating layer on the cover 240 can further strengthen the hardness, thereby preventing the cover 240 from being damaged even in the strong impact from the outside.

At this time, the hard coating layer is 15 to 35 parts by weight of hydroxy ethyl hydroxy propyl cellulose, octadecyl 3,5-di-t-butyl-4- hydride based on 100 parts by weight of dipentaerythritol hexaacrylate (DPHA) It may be formed of a material comprising 10 to 20 parts by weight of hydroxy hydro cinnamate, 7 to 15 parts by weight of ethyl 2- [3- (6-nitrobenzol [d] thiazol-2-yl) ureido] acetate.

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

1. Preparation of Specimen

In Example 1, 100 g of dipentaerythritol hexaacrylate, 15 g of hydroxy ethyl hydroxy propyl cellulose, 10 g of octadecyl 3,5-di-t-butyl-4-hydroxy hydro cinnamate, ethyl 2- [3- After mixing 7 g of (6-nitrobenzol [d] thiazol-2-yl) ureido] acetate using acetone, a 20 micron thick specimen was prepared by injection molding, and acetone was volatilized.

In Example 2, 100 g of dipentaerythritol hexaacrylate, 35 g of hydroxy ethyl hydroxy propyl cellulose, 20 g of octadecyl 3,5-di-t-butyl-4-hydroxy hydro cinnamate, ethyl 2- [3- 15 g of (6-nitrobenzol [d] thiazol-2-yl) ureido] acetate was mixed with acetone to prepare a specimen in the same manner as in Example 1.

In Comparative Example 1, 100 g of dipentaerythritol hexaacrylate, 40 g of hydroxy ethyl hydroxy propyl cellulose, 5 g of octadecyl 3,5-di-t-butyl-4-hydroxy hydro cinnamate, ethyl 2- [3- 10 g of (6-nitrobenzol [d] thiazol-2-yl) ureido] acetate was mixed with acetone to prepare a specimen in the same manner as in Example 1.

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

In Comparative Example 3, 100 g of dipentaerythritol hexaacrylate, 25 g of hydroxy ethyl hydroxy propyl cellulose, 15 g of octadecyl 3,5-di-t-butyl-4-hydroxy hydro cinnamate, ethyl 2- [3- 2 g of (6-nitrobenzol [d] thiazol-2-yl) ureido] acetate were mixed with acetone to prepare a specimen in the same manner as in Example 1.

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

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

TABLE 2

2. Hardness Measurement and Evaluation Method

The following items were evaluated for the specimens prepared in Examples 1 and 2 and Comparative Examples 1 and 4 above.

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) The heat resistance was measured for 4 hours after standing at 90 ℃ the occurrence of cracks and warpage of the appearance.

4) Adhesiveness was made by drawing lines at 2mm intervals on the specimen and making strong eyelids in the vertical direction after TAPE adhesion.

5) Flexibility was determined by cracking 180 ㅀ after 12 hours after coating.

3. Results and Analysis

The evaluation results are shown in Table 3.

[Table 3]

As can be seen from the results of Table 3, in Examples 1 and 2, it can be seen that it has excellent characteristics in all of the pencil hardness, transmittance, heat resistance, adhesion, flexibility, while Comparative Examples 1 to 4 excellent transmittance It can be seen that it has poor adhesiveness in terms of pencil hardness, heat resistance, and flexibility, although it has high adhesion.

4 is a perspective view of the LED landscape lighting apparatus having an excellent heat dissipation performance according to another embodiment of the present invention.

Referring to FIG. 4, the LED landscape lighting apparatus 400 according to another embodiment of the present invention may include a plurality of lamps 410 and a support 420.

Here, since the plurality of lamps 410 has the same structure and function as the lamps 110 employed in the LED landscape lighting apparatus 100 of FIG. 1, description thereof will be omitted.

The support 420 is fastened to the plurality of lamps 410 through fitting coupling with each case (see "230" in FIG. 2) of the lamps 410 to support the plurality of lamps 410.

To this end, the support 420 may be formed in a shape that is coupled to the case of each of the lamps 410 corresponding to the edge cross section of the case. That is, the support 420 is formed in the concave-convex shape that is coupled to the case can be fitted and coupled to the case.

The structure in which the support 420 is fitted to each case of the lamp 410 is the same as the fitting structure of the case 230 and the auxiliary support 120 of the lamp 110 shown in FIG. 3. In FIG. 4, the coupling structure between the support 420 and the case of the lamp 410 is not illustrated.

5 is a view illustrating an LED landscape lighting apparatus having an excellent lightning protection function according to an embodiment of the present invention. For reference, the LED landscape lighting apparatus of FIG. 5 is the same as or similar to the LED landscape lighting apparatus 100 or 400 of FIG. 1 or 4.

Referring to FIG. 5, the LED landscape lighting apparatus 500 having an excellent lightning protection function according to an embodiment of the present invention includes a power supply unit 510, a plurality of lightning protection resistors 520, a heating element 530, and It may include a case 540. Of course, the LED landscape lighting apparatus 500 may include some or all of the components of the LED landscape lighting apparatus 100, 400 illustrated in FIG. 1 or 4.

The resistance element 520 is disposed in parallel between the power supply unit 510 and both terminals of the heating element 530. One end of the resistor 520 may be grounded through the case 540.

Therefore, when the LED landscape lighting device 500 is installed on the ground, it is possible to prevent damage due to lightning through the resistance element 520 in advance.

As such, in the embodiments of the present invention, the heat dissipation area may be improved by improving the structure of the case, and the heat dissipation performance may be improved, and the lightning protection resistor may be used to prevent damage due to the lightning strike.

While specific embodiments of the present invention have been described so far, various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the claims below, but also by the equivalents of the claims.

As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above-described embodiments, which can be variously modified and modified by those skilled in the art to which the present invention pertains. Modifications are possible. Accordingly, the spirit of the present invention should be understood only by the claims set forth below, and all equivalent or equivalent modifications thereof will belong to the scope of the present invention.

110, 410: lighting
120: auxiliary support
130, 420: support
210: circuit board
220, 530: heating element
230, 540: case
240: cover
510: power supply
520: resistance element

Claims (5)

A circuit board including a plurality of circuit elements, a heating element having a plurality of LED lamps disposed on the circuit board and emitting light, the circuit board and the heating element is accommodated and heat generated from the heating element is discharged to the outside A plurality of lamps including a case and a cover coupled to the case at an upper portion of the case to cover the circuit board and the heating element;
A support for fastening with the plurality of lamps through fitting with the case to support the plurality of lamps; And
Lightning protection resistor element disposed in parallel between the power supply for supplying power to the lamp and the both terminals of the heating element, one terminal of which is grounded through the case
Including,
The cover is
A hard coating layer for increasing hardness, wherein the hard coating layer is 15 to 35 parts by weight of hydroxy ethyl hydroxy propyl cellulose, octadecyl 3,5-di with respect to 100 parts by weight of dipentaerythritol hexaacrylate (DPHA) 10 to 20 parts by weight of -t-butyl-4-hydroxy hydrocinnamate and 7 to 15 parts by weight of ethyl 2- [3- (6-nitrobenzol [d] thiazol-2-yl) ureido] acetate LED landscape lighting apparatus having excellent heat dissipation performance and lightning protection, characterized in that formed of a material.
The method of claim 1,
The case is formed in the shape of the irregular cross section of the edge for expansion of the heat dissipation area,
The support is an LED landscape lighting apparatus having excellent heat dissipation performance and lightning protection, characterized in that the portion coupled to the case is formed in a shape corresponding to the edge cross section of the case so that the support can be fitted with the case.
The method of claim 1,
A plurality of auxiliary supports disposed between the case and the support to support the lamp, the fitting being coupled to the case and bolted to the support;
LED landscape lighting apparatus having an excellent heat dissipation performance and lightning protection function further comprising.
The method of claim 3,
The auxiliary support
LED landscape lighting apparatus having an excellent heat dissipation performance and lightning protection function, characterized in that formed in a form corresponding to the edge cross-section of the case so as to be coupled to the case.
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