KR101858005B1 - LED lighting device - Google Patents

Abstract

Disclosed is a condensation preventing LED lighting device. The condensation preventing LED lighting device according to an aspect of the present invention includes: a main frame having an accommodation space on a front side; an LED module having a printed circuit board mounted inside the accommodation space of the main frame and a plurality of LED elements installed on the printed circuit board; a front side cover assembled on the front side of the main frame to tightly seal the accommodation space in which the LED module is mounted; an electric cable installed to be inserted inside the accommodation space of the main frame and electrically connected to the LED module inside the accommodation space; and a condensation preventing means installed to prevent condensation inside the accommodation space in which the LED module is mounted. The condensation preventing means includes a condensation preventing hole formed to be connected to the accommodation space of the main frame and a valve installed in the condensation preventing hole, and a cable insertion hole is formed in the main frame to be connected to the accommodation space so that the electrical cable may be inserted. Cloth is stripped off from part of the electric cable, and the accommodation space is tightly sealed by filling a sealing material in the cable insertion hole in which the electric cable is inserted and the part of the electrical cable from which the cloth is stripped off. According to the present invention, reduction of lifespan and failure of the LED lighting device caused by a condensation phenomenon can be effectively prevented by vacuuming the accommodation space in which the LED module is mounted and filling the accommodation space with nitrogen or argon gas through the condensation preventing hole after the condensation preventing hole is formed in the main frame and sealing the portions where the electrical cable is inserted after the electrical cable is inserted through the cable insertion hole of the main frame.

Description

[0001] The present invention relates to an LED lighting device,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting apparatus, and more particularly, to a condensing type LED (Light Emitting Diode) lighting apparatus having condensation preventing means.

Lighting devices are devices that convert electrical energy into light energy and emit light. Lighting devices of various types and functions are used throughout the society, such as companies, homes, and roads. Such an illumination device has been mainly used as a light source such as an incandescent lamp, a fluorescent lamp, a halogen lamp, and a mercury lamp, and in recent years, an LED lighting device using an LED device has been highlighted. This is because the LED illumination device has advantages such as relatively long lifetime, low maintenance cost and eco-friendly effect as compared with the lighting devices of other light sources.

Accordingly, the demand for LED lighting devices is increasing exponentially, and in particular, demands for indoor lighting devices, as well as demand for outdoor lighting devices such as road traffic lights and street lamps, electric sign boards, building lighting, outdoor lighting and landscape lighting It is also increasing significantly.

However, inevitably, an outdoor LED lighting device, which must be exposed to the environment such as snow and rain, is very vulnerable to condensation.

That is, conventional lighting devices using incandescent lamps, fluorescent lamps, halogen lamps, and mercury lamps as light sources are basically kept in an airtight or vacuum state, and when used, heat of high temperature is generated from a light source, The problem caused by the condensation phenomenon is not caused largely. On the other hand, due to the nature of the LED device, the LED lighting device does not generate much heat during its use, so that the low temperature of the LED device is insufficient to dehumidify it, and thus it is inevitably vulnerable to condensation.

Therefore, in the case of the LED illumination device installed with the outdoor lighting device, problems such as shortening of the life time and trouble frequently occur due to the condensation phenomenon. This is caused by the electronic characteristics of the LED, and in the case of the LED illumination device, the condensation phenomenon becomes fatal as compared with other lighting devices. Of course, it is possible to prevent the problem caused by the condensation phenomenon by incorporating a dehumidifying member in the inside of the LED illumination device, but in this case, the installation cost of the dehumidifying member is increased.

Therefore, there is a need for a proposal of an LED lighting device capable of reducing the manufacturing cost by simplifying the entire structure while effectively preventing condensation.

Korean Patent Registration No. 10-1455062 Korean Patent Publication No. 10-1421073

Disclosure of Invention Technical Problem [8] The present invention has been proposed in order to solve the above problems, and it is an object of the present invention to provide a dew condensation type LED illumination device capable of effectively preventing condensation phenomenon, The purpose is to provide.

The present invention relates to an electronic apparatus having a main body frame having a receiving space on the front side, an LED module having a plurality of LED elements mounted on a printed circuit board and a printed circuit board, A front cover assembled on the front surface of the main body frame; And an anti-condensation means installed to prevent condensation from occurring in the accommodation space in which the electric cable and the LED module are mounted, the condensation prevention means being inserted into the accommodation space of the main frame and electrically connected to the LED module in the accommodation space, And a valve installed in the condensation preventing hole and the condensation preventing hole formed to be connected to the receiving space of the body frame, wherein a cable insertion hole is formed in the body frame so as to be connected to the accommodation space so as to insert the electric cable, The present invention provides a condensation-prevention type LED lighting device in which a coating is peeled, a cable insertion hole into which an electric cable is inserted, and a portion where a coating of the electric cable is peeled off is filled with a sealing agent,

According to the present invention, a condensation preventing hole is formed in the main body frame, and then the accommodation space in which the LED module is seated through the condensation preventing hole is evacuated and filled with nitrogen or argon gas. Further, It is possible to effectively prevent the shortening and failure of the life of the LED lighting device due to the condensation phenomenon.

Further, the present invention can simplify the structure and manufacture of the LED illumination device, thereby reducing manufacturing cost and facilitating management.

FIG. 1 is an exploded perspective view showing an electrical cable of a condensation-prevention-type LED lighting device according to an embodiment. FIG.
Fig. 2 is a perspective view showing an electric cable of a condensation-prevention-type LED lighting device according to an embodiment. Fig.
3 is a rear perspective view of a condensation-prevention-type LED lighting device according to an embodiment.
4 is a rear perspective view showing a state before the cap coupling and before the second sealing agent application of the condensation-prevention-type LED illumination device according to one embodiment.
5 is a perspective view for explaining a valve of a condensation-prevention-type LED illumination device according to an embodiment;
6 is an exploded perspective view of an LED illumination device according to another embodiment of the present invention.
7 is a rear view of an LED illumination device according to another embodiment of the present invention.
8 and 9 are views showing an electric cable and cable gland of an LED illumination device according to another embodiment of the present invention.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, when a component is referred to as "comprising ", it means that it can include other components as well, without excluding other components unless specifically stated otherwise. Also, throughout the specification, the term "on" means to be located above or below the object portion, and does not necessarily mean that the object is located on the upper side with respect to the gravitational direction.

In addition, the term " coupled " is used not only in the case of direct physical contact between the respective constituent elements in the contact relation between the constituent elements, but also means that other constituent elements are interposed between the constituent elements, Use them as a concept to cover each contact.

Also, the terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The sizes and thicknesses of the respective components shown in the drawings are arbitrarily shown for convenience of explanation, and thus the present invention is not necessarily limited to those shown in the drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, embodiments of a power generation facility according to the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals refer to the same or corresponding components, Is omitted.

1 to 4 are views for explaining a condensation-prevention-type LED lighting device according to an embodiment of the present invention, wherein FIG. 1 is an exploded perspective view and an assembled perspective view of the condensation-prevention- And FIG. 3 is a rear perspective view of a condensation-prevention-type LED illumination device according to an embodiment, and FIG. 4 is a rear perspective view showing a state before the cap coupling and before the application of the second sealing agent in the condensation- .

The dew condensation type LED illumination device 100 according to the embodiment can include the body frame 10, the packing 20, the LED module 30, the front cover 40, and the electric cable 50 . In addition, the condensation-prevention-type LED lighting apparatus 100 according to the embodiment may include a dew condensation preventing means.

The main body frame 10 is configured to determine the overall appearance of the dew condensation-protected LED illumination device 100 according to the embodiment and to accommodate the packing 20 and the front cover 50 including the LED module 30. [ For example, a metal material, and may have a substantially rectangular plate shape, but may have a receiving space S for receiving the LED module 30 on the front side. The accommodation space S may be substantially planar and substantially similar to the plane of the LED module 30 but slightly larger than the LED module 30 and may have a space on the upper side after the LED module 30 is seated in a cross- May be formed to have a thickness to be formed.

The body frame 10 can be provided with a screw groove 12a in the center of the accommodation space S for fixing the LED module 30 and can be provided with a screw groove 12a in the center of the accommodation space S for insertion of the packing 30. [ The rounded square groove G may be provided with the corners in the form of surrounding the periphery.

Although not shown, the body frame 10 may be partially formed with jaws and grooves, for example, on the inner surface of the rim on the front side for assembly with the front cover 40. [ In this case, protrusions or the like may be formed on the edge surface of the front cover 40, and the front cover 40 may be coupled to the front surface side of the main body frame 10 in an interference fit manner.

Alternatively, although not shown, the main body frame 10 may have a plurality of screw holes along the rim on the front side, and corresponding screw holes may also be formed in the front cover 40, The lid 40 can be coupled to the front side of the main body frame 10 in a threaded manner.

The main body frame 10 may include a cable insertion hole 14, a buried groove 15, and a dew condensation preventing hole 16. The cable insertion hole 14 and the condensation preventing hole 16 are symmetrical in the left and right directions on the rear surface of the main body frame 10 and are located at opposite sides of the receiving space S on the front surface of the main body frame 10 . The embedding groove 15 may be formed to surround the cable insertion hole 14 at the rear surface of the main body frame 10.

The embedding groove 15 is provided to encapsulate the portion of the cable insertion hole 14 into which the electric cable 50 is inserted by epoxy. For example, the embedding groove 15 is formed in a rectangular box shape protruding from the rear surface of the main body frame 10 . The embedding groove 15 may be formed in a shape other than a rectangular box shape.

In the embodiment, as shown in Fig. 4, the pair of columnar insertion grooves 17, which are respectively disposed at opposite positions in the embedding groove 15, may be provided, and correspondingly, the cap 60 A pair of protrusions 62 may be provided on the inner side of the protrusion 62. Therefore, the cap 60 in the dew condensation type LED illumination apparatus 100 of the embodiment can be fixed by inserting the protrusion 62 thereof into the columnar insertion groove 17 in a detent manner.

In addition, the main body frame 10 may include a fixing member 18 provided for easy installation of the condensation-prevention-type LED lighting apparatus 100 according to the embodiment. The fixing member 18 may be provided in a U-shape, for example. The fixing members 18 may be rotatably fixed to both side portions of the body frame 10 at both side ends thereof.

For example, the end portions of the fixing member 18 can be fixed to the main body frame 10 through the assembly of the nuts 19. To this end, bolts (not shown) are attached to the rear side edges of the main body frame 10, And holes (not shown) for insertion into the bolt may be provided at both side ends of the fixing member 18. [ The fixing member 18 can be fixed to the body frame 10 while maintaining its angle with the body frame 10 through the assembly of the nuts 19 after the both ends of the fixing member 18 are inserted into the bolts provided on both side portions of the body frame 10 have.

Also, although not clearly shown, the body frame 10 may be coated with a reflective material on the front side surface of the accommodation space S. It can be understood that the light emitting efficiency of the light emitted from the LED elements 34 is increased.

The main body frame 10 including the fixing member 8 can be changed into various shapes and structures within a range that facilitates the mounting of the LED module 30 and the assembly with the front cover 40 Do.

Next, the packing 20 stably mounts the front cover 40 on the main frame 10 on which the LED module 30 is mounted, as well as the storage space 40 on which the LED module 30 is mounted S in the housing space S of the main body frame 10 and in a rectangular groove G provided in the vicinity of the accommodation space S of the main body frame 10, And may be provided in the form of a square ring to be inserted and disposed. In the embodiment, the packing 20 may have a jaw 22 on which the LED module 30 is placed, and the clearance of the LED module 30 can be suppressed by the jaw 22.

The LED module 30 is a light source of the LED illumination device 100 according to the embodiment and includes a printed circuit board 32 and a plurality of LED elements 34 mounted on the printed circuit board 32 and passive elements 36 ). Here, the printed circuit board 32 has a cable insertion hole 14 (see FIG. 1) positioned at both side edges of the accommodation space S with a square plate shape and a size substantially similar to the accommodation space S of the main body frame 10, And the dew condensation preventing hole 16, as shown in Fig. In addition, the printed circuit board 32 may have a hole h for fixing the printed circuit board 32 to a portion corresponding to the screw groove 12a of the main body frame 10. A predetermined number of LED elements 32 may be mounted on the printed circuit board 32 and may emit red (R), green (G), and blue (B) colors, respectively, as needed.

In addition, although not explicitly shown, the LED module 30 may further include a connection portion provided on the printed circuit board 32 for electrical connection with the electric cable 50, and the connection portion is provided in the form of a socket But may be provided in terminal form as well.

The LED module 30 can be fixed in the receiving space S on the front side of the main body frame 10 by a fixing screw 64. [ Alternatively, the LED module 30 may be fixedly disposed in the front side accommodation space S of the body frame 10 by an adhesive (not shown).

The front cover 40 is provided to protect the LED module 30 from the outside and may be provided to sufficiently emit light toward the front side of the main body frame 10 without loss of light emitted from the LED module 30. [ have. For example, the front cover 40 may be made of a polycarbonate material. Alternatively, the front cover 40 may be made of a glass substrate. The front cover 40 may be provided in a plate shape and may have a larger size than the accommodation space S of the body frame 10 on which the LED module 30 is mounted.

Also, the front cover 40 may have a generally plate-like shape, and protrusions may partially be formed on the side surfaces of the edges for assembly with the body frame 10. [

Although not shown, the front cover 40 may be provided with threaded grooves to be assembled to the main frame 10 according to a screw coupling method. In this case, the corresponding main frame 10 may be provided with screw holes.

The electric cable 50 is for applying an external power source to the LED module 30. Although not shown in the drawings, the end portion of the electric cable 50 penetrates the cable insertion hole 14 from the rear surface of the main body frame 10, Can be installed to reach.

4, the electric cable 50 penetrates the cable insertion hole through one side of the embedding groove 15 provided on the rear surface of the main body frame 10, and in this state, The interior of the inserted embedding groove 15 is filled with a second sealing agent 72, for example, epoxy. Here, the second sealing agent 72 is shown partially filling the inside of the embedding groove 15, but this is shown for the sake of explanation. Actually, the second sealing agent 72 does not completely fill the embedding groove 15 .

Here, the electric cable 50 is inserted into the accommodation space S through the cable insertion hole 14, but also the end part and the spaced part are also inserted in a state in which the cover is peeled off as well as the end part disposed in the accommodation space S .

That is, in the conventional LED lighting device, the electric cable 50 is fixed to the main body frame by a cable gland or the like. At this time, the end portion of the electric cable 50 connected to the LED module 30, The cable part also becomes stripped. However, when the LED illumination device is in use, the moisture penetrates into the accommodation space S in the main body frame 10 on the electric cable 50. As a result, dew condensation occurs, shortening the life of the LED illumination device, Can be caused.

On the other hand, in the embodiment, since the electric cable passing through the cable insertion hole of the body frame seals the portion with the second sealing agent 72 such as epoxy, even if the moisture moves along the wiring of the electric cable 50, And the second sealing agent 72 is not moved further, that is, penetration into the accommodation space S is not performed.

Therefore, in the embodiment, the condensation phenomenon due to the electric cable 50 can be prevented because the moisture penetrating the electric cable 50 does not reach the accommodation space S but is blocked in the buried groove 15.

On the other hand, although not clearly shown, the electric cable 50, which has reached the accommodation space S, has a connection portion such as a socket or a terminal provided on the printed circuit board 32 of the LED module 30, Or may be electrically connected according to a soldering method.

The dew condensation prevention means is provided to prevent condensation from occurring in the accommodation space S of the main frame 10 on which the LED module 30 is mounted. The dew condensation prevention hole 16, the valve 76, An inert gas and a first sealing agent 78. [

The condensation preventing hole 16 is formed to be connected to the receiving space S from the rear surface of the main body frame 10 and has an internal thread on the inner peripheral surface thereof. In particular, the condensation preventing hole 16 may be formed to protrude from the rear surface of the main body frame 10, which can be understood as an improvement in workability.

The valve 76 is provided for facilitating the process of exhausting the air in the accommodation space S to the outside and injecting the inert gas into the accommodation space S again. Can be screwed into the prevention hole (16). To this end, as shown in FIG. 5, the valve 76 may have a hexagonal bolt shape at the upper end portion, and a lower end portion may have threads at the outer surface. In addition, an O-ring 78 may be inserted into the boundary between the upper end portion and the lower end portion. The valve 76 can be screwed into the dew condensation preventing hole 16 under the presence of the O-ring 78 from the receiving space S of the main body frame 10. [

In an embodiment, the valve 76 may be comprised of a Dunlop valve, a Schrader valve, or a Presta valve. That is, in the valve 76 of the embodiment, when the air exhaust / injection pin is inserted from the outside such as an air injection valve normally installed in a tire or the like, the hollow H is opened to exhaust air inside the accommodation space, When the air baffle / injection pin is detached, the hollow H is closed so that the inert gas in the accommodation space S flows through the condensation preventing hole 16 to the outside As shown in FIG.

The condensation preventing hole 16 may be formed to protrude from the rear surface of the main body frame 10 and the protrusion-preventing condensation preventing hole 16 may be formed in the protrusion- A male screw acid may be formed on the inner circumferential surface thereof.

The socket 72 may have a hexagon-shaped bolt shape at an upper end portion and a male threaded portion at an outer circumferential surface of a lower end portion in order to have a hollow and screw into the dew condensation preventing hole 16. Although not clearly shown, the socket 72 may include an O-ring inserted at the boundary between the upper end portion having a hexagonal bolt shape and the lower end portion having a male threaded portion, 16), the airtight state can be maintained.

The first sealing agent 74 is for permanently and completely sealing the condensation preventing hole 16 in which the exhaust gas and the inert gas have been injected in the accommodation space S and may be made of epoxy, for example. Alternatively, polycarbonate may be used as the second sealing agent.

The inert gas is supplied to the accommodating space surrounded by the body frame 10, the packing 20 and the front cover 40 in order to prevent shortening and failure of the lifetime of the LED module 30 due to the condensation phenomenon. (S), and may include nitrogen gas or argon gas. This inert gas can be filled in the accommodation space S in which the LED module 30 is seated through the hollow of the valve 76 and can be filled with the inert gas for 20 to 70% Preferably at a filling rate of 30%.

The condensation-prevention-type LED illumination device 100 according to the embodiment of the present invention as described above can be manufactured as follows.

First, the rubber packing 20 is inserted into the square groove G provided around the front space S of the main frame 10. Thereafter, the LED module 30 is positioned so as to be disposed on the jaw of the packing 20 while being disposed in the accommodation space S, and the hole h of the LED module and the body frame 10 A screw is engaged with the screw groove 12a to fix the LED module 30 to the main frame 10 including the packing 20.

Next, the electric cable 50 is inserted through the embedding groove 15 and the cable insertion hole 14 from the rear surface of the body frame 10 so as to reach the inside of the accommodation space S and inserted into the accommodation space S The inside of the embedding groove 15 in which the electric cable 50 is inserted from the rear side of the main body frame 10 is connected to the second sealing After sealing with the second sealant 72, the cap 60 is bonded onto the embedding groove 15 in which the second sealant 72 is embedded.

Here, the embedding of the second sealing agent 72 in the embedding groove 15 into which the electric cable 50 is inserted proceeds not only after the electrical connection between the electric cable 50 and the LED module 30, But also before the electrical connection between the cable 50 and the LED module 30 is possible.

The main frame 10 and the front cover 40 are pressed against the LED module 30 while the front cover 40 is disposed on the front side of the main frame 10 so as to face the LED module 30 including the packing 20. [ Assembled in a fitting manner. Since the condensation-prevention LED illumination device according to the final embodiment is filled with the inert gas after the inside of the accommodation space S is exhausted, the front cover 40 can not be easily detached from the main body frame 10.

Meanwhile, the front cover 40 can be assembled with the main frame 10 in a screw-engagement manner instead of the interference fit.

Subsequently, the air vent / injection pin is inserted through the valve 76 of the dew condensation preventing means from the rear surface of the main body frame 10 to open the hollow of the valve 76. In this state, the evacuation process is performed to evacuate the inside of the accommodation space S, and then the gas injection process is performed again to fill the inside of the accommodation space S with an inert gas such as nitrogen gas or argon gas.

Then, the air exhaust / injection pin is disassembled from the valve (76). At this time, since the embodiment employs either the Dunlop valve, the Schrader valve or the Presta valve as the valve 76, the external discharge of the inert gas through the valve can be shut off temporarily and in a stepwise manner.

Subsequently, a second sealing agent 74, such as epoxy, is formed in the hollow H of the valve 76 from the rear surface of the body frame 10, thereby permanently blocking the hollow H of the valve 76 Thereby preventing the inert gas in the accommodation space S from escaping out of the accommodation space S where the LED module 30 is seated. As a result, the condensation-prevention-type LED illumination device 100 according to the present invention, And the like.

The LED lighting device according to the present invention charges an inert gas, such as nitrogen or argon, into the receiving space in which the LED module is placed, and also seals the body frame portion into which the electric cable is inserted, Therefore, it is possible to reduce the lifetime of the LED module due to the condensation phenomenon, and to avoid problems such as failure.

In addition, the dew condensation preventing LED lighting apparatus according to the present invention seals the dew condensation preventing hole and the buried groove in a state where the dew condensation preventing hole and the buried groove are formed in the main body frame in view of the structure, The manufacturing cost can be reduced and the management can be facilitated.

FIG. 6 is an exploded perspective view of an LED illumination apparatus according to another embodiment of the present invention, FIG. 7 is a rear view of an LED illumination apparatus according to another embodiment of the present invention, and FIGS. 8 and 9 are cross- Fig. 3 is a view showing an electric cable and a cable gland of an LED lighting device according to a first embodiment of the present invention.

6 to 7, a waterproof LED lighting device 100 according to a first embodiment of the present invention includes a body frame 110, an LED module 120, a front cover 130, an electric cable 140 And a valve 150. The stripping pivot of the electric cable 140 is filled with the second sealing agent 160 and the valve 150 is filled with gas to realize waterproofing.

The body frame 110 determines the overall appearance of the waterproof LED illumination device 100 and accommodates the LED module 120. The main body frame 110 of the waterproof LED lighting apparatus 100 according to the present embodiment has a polygonal plate-like structure and has an accommodation space S open to the front.

 For example, the main body frame 110 may be made of a metal material having excellent heat transfer. The entire outer shape of the main body frame 110 has a rectangular plate shape and a receiving space S for receiving the LED module 120 may be formed in a concave groove shape on the front surface of the main body frame 110. The accommodation space S is substantially similar to the plane of the LED module 120 in a plan view, but slightly larger than the LED module 120, and a space is formed upwardly after the LED module 120 is mounted in a cross- And may have a thickness.

Referring to FIG. 6, a packing groove 112 may be formed on a bottom surface of the accommodation space S, along which the packing may be inserted. In addition, an engaging groove 111 may be formed in a side surface of the accommodation space S to allow a part of the front cover 130 to be fitted.

6 and 7, a plurality of heat dissipation fins 114 may be formed on the rear surface of the main body frame 110 to dissipate heat generated from the LED module 120.

A cable insertion hole 116 and a condensation preventing hole 118 may be formed on the rear surface of the main body frame 110. The cable insertion hole 116 and the condensation preventing hole 118 may be formed to be connected to the accommodation space S through the body frame 110. An electric cable 140 is inserted into the cable insertion hole 116 and a valve 150 may be installed in the condensation preventing hole 118. For example, the cable insertion hole 116 and the dew condensation preventing hole 118 may be formed to protrude from the rear surface of the main body frame 110, and the cable insertion hole 116 and the dew condensation preventing hole 118 On the inner circumferential surface, threads may be formed, respectively. Accordingly, the cable gland can be screwed into the cable insertion hole 116, and the valve 150 can be screwed into the condensation preventing hole 118.

Although not clearly shown, the body frame 110 may be coated with a reflective material on the front side surface of the accommodation space S. It can be understood that the light emitting efficiency of the light emitted from the LED elements 124 is increased.

Referring to FIG. 6, the packing 135 allows the front cover 130 to be stably mounted on the main body frame 110 on which the LED module 120 is mounted, And may be provided to maintain the airtight state of the space S. [ The packing 135 may be made of a soft material, for example, a rubber material. In this embodiment, the packing 135 may be inserted into the packing groove 112 provided around the accommodation space S of the main body frame 110, and may be provided in the form of a polygonal ring.

Meanwhile, the vertex of the body frame 110 may be formed with a through hole into which a screw or the like may be inserted. The LED illumination device 100 may be attached to or installed on the structure using a screw inserted in the through hole.

The LED module 120 may include an LED element 124 as a light source and a printed circuit board 122 on which a plurality of LED elements 124 are mounted. The LED module 120 is mounted in the receiving space S of the main frame 110 and has a structure in which the LED module 120 is embedded in the main frame 110.

Referring to FIG. 6, the printed circuit board 122 may have a plate shape and a size substantially similar to the receiving space S of the main body frame 110 in a plan view. A plurality of LED elements 124 may be mounted on the printed circuit board 122 in accordance with a desired brightness. The LED elements 124 may be disposed on the front surface of the printed circuit board 122 so that the LED elements 124 emit light towards the front surface of the body frame 110.

Although not shown, the LED module 120 may further include a connection portion provided on the printed circuit board 122 for electrical connection with the electric cable 140. [

The front cover 130 is for protecting the LED module 120 from the outside and is coupled to the front surface of the main body frame 110 so that the accommodation space S is airtight. In addition, the front cover 130 is made of a transparent material so that light emitted from the LED device 124 can be emitted.

For example, the front cover 130 may be made of polycarbonate. Alternatively, the front cover 130 may be made of a glass substrate. The front cover 130 may be formed in a plate shape and may be formed to be substantially equal to or larger than the accommodation space S of the body frame 110 on which the LED module 120 is mounted.

Referring to FIG. 6, protrusions 132 may be partially formed on the side surfaces of the front cover 130 for assembly with the main body frame 110. The protrusion 132 of the front cover 130 is fitted into the coupling groove 111 of the body frame 110 so that the front cover 130 and the body frame 110 can be engaged with each other. Although not shown, the front cover 130 may have threaded grooves to be assembled to the main body frame 110 according to a screw coupling method. In this case, screw holes may be provided in the corresponding main frame 110 have.

The electric cable 140 is for applying external power to the LED module 120 and may be installed to reach the accommodation space S through one end of the body frame 110 through the cable insertion hole 116 have. An electrical cable 140 extending into the accommodation space S is electrically connected to the LED module 120.

8 and 9 are views showing the electric cable 140 and the cable gland 145 of the LED illumination device 100 according to the first embodiment of the present invention.

Referring to Figures 8 and 9, a portion of the electrical cable 140 is formed such that the exposed area 144a with the cover 144 peeled off and the bare wire 142, which transfers electricity to the exposed area 144a, do. The cover 144 of the electric cable 140 is filled with the second sealing agent 160 in the exposed region 144a to form the waterproof structure of the electric cable 140. [

Specifically, the electric cable 140 can be inserted and fixed in the cable insertion hole 116 of the body frame 110 using the cable gland 145. [ At this time, the electric cable 140 can be inserted into the cable gland 145 in a state where the cover 144 is peeled off, and the second sealing agent 160 is filled in the cable gland 145 The second sealing agent 160 may be filled in the exposed region 144a where the covering 144 of the electric cable 140 is peeled off.

The conventional electric cable 4 shown on the left side of FIG. 9 is inserted into the receiving space S of the main body frame 110 through the cable gland 145 with only the end portion thereof being peeled off. In contrast, in the embodiment of the present invention, the portion where the electric cable 140 is disposed inside the cable gland 145 apart from the end portion thereof as well as the end portion thereof also passes through the inside of the cable gland 145 with the cover 144 peeled off And is inserted into the receiving space S of the main body frame 110.

Accordingly, in the conventional art, the moisture can move to the end portion where the cover is peeled while moving along the wiring on the inner side of the cover of the electric cable 4, and can penetrate into the accommodation space S of the main frame 110. On the other hand, In the example, the moisture moving on the wiring of the electric cable 140 is no longer moved by the second sealing agent 160 filled in the cable gland 145. That is, the penetration of the moisture into the receiving space S is blocked. Therefore, in the embodiment of the present invention, moisture penetrating through the electric cable 140 can not reach the receiving space S and is blocked by the second sealing agent 160, so that a condensation phenomenon caused by the electric cable 140 Can be prevented. At this time, as the second sealing agent 160, epoxy may be used.

Meanwhile, in this embodiment, the cable gland 145 is connected to the cable insertion hole 116, but the cable gland 145 can be omitted. A portion where the cover 144 of the electric cable 140 is peeled may be disposed in the cable insertion hole 116 and the second sealing agent 160 may be filled in the cable insertion hole 116. [

On the other hand, the electric cable 140, which has reached the accommodation space S, is electrically connected to a connection portion such as a socket or a terminal provided on the printed circuit board 122 of the LED module 120, .

The valve 150 is installed to exhaust the air in the accommodation space S to the outside and to inject the gas into the accommodation space S. The valve 150 is installed in the condensation preventing hole 118 formed to be connected to the accommodation space S through the body frame 110.

6 and 7, the valve 150 is coupled to the valve engaging member 152, and the valve engaging member 152 is engaged with the main frame 110 to thereby connect the valve 150 to the main frame 110 Can be installed.

And can be screwed into the dew condensation hole 118 from the rear side of the main body frame 110. The upper end portion of the valve engagement member 152 may have a hexagonal bolt shape, and the outer peripheral surface of the lower end portion may have a thread. In addition, an O-ring can be inserted at the boundary between the upper end portion and the lower end portion. Therefore, the valve engaging member 152 can be screwed into the condensation preventing hole 118 under the presence of the O-ring.

Although the valve engagement member 152 is coupled to the condensation preventing hole 118 in this embodiment, the valve engagement member 152 may be omitted. For example, the valve 150 may be directly coupled to the condensation preventing hole 118.

The valve 150 may be any one of a Dunlop valve 150, a Schrader valve 150, or a Presta valve 150. For example, when the air exhaust / injection pin is inserted from the outside such as the air injection valve 150 normally installed in a tire or the like, the valve 150 is opened to exhaust air in the accommodation space S, The gas can be injected into the accommodation space S. When the air exhaust / injection pin is removed, the valve 150 is closed so that gas in the accommodation space S is not discharged to the outside through the condensation preventing hole 118.

And may further include a first sealing agent to fill the valve 150 after being filled with the gas by the valve 150. At this time, a valve receiving portion 119 may be formed around the condensation preventing hole 118 in which the valve 150 is installed, the valve receiving portion 119 having an outer circumferential portion protruding and a central portion hollowed out. A dew condensation hole 118 is formed in the valve receiving portion 119 so that the valve 150 is disposed and the first sealing material is filled in the valve receiving portion 119 to close the valve 150 ) Can be buried.

The first sealing agent is used to more firmly seal the condensation preventing hole 118 in which the exhaust gas and the inert gas are injected in the accommodation space S, and the first sealing agent may be, for example, an epoxy or polycarbonate have.

The gas is filled in the airtight accommodation space S to prevent shortening and failure of the lifetime of the LED module 120 due to the condensation phenomenon. The gas may comprise an inert gas such as nitrogen gas or argon gas.

Referring to FIGS. 6 to 7, the space S is surrounded by the body frame 110 and the front cover 130, and the accommodation space S is sealed with the above-described sealing structure, so that the gas can be filled. An inert gas such as nitrogen may be charged into the accommodation space S where the LED module 120 is seated through the valve 150 and may be filled with a filling rate of 20 to 70% Preferably at a filling rate of 30%.

It will be apparent to those skilled in the art that various modifications and additions to, or additions to, the components may be made without departing from the scope of the present invention as set forth in the appended claims. The present invention can be variously modified and changed by those skilled in the art, and it is also within the scope of the present invention.

10, 110: Body frame
12a: screw groove
14, 116: Cable insertion hole
15: Landfill
16, 118: Condensation prevention hole
17: columnar insertion groove
18: Fixing member
19: Nut
20: Packing
22: chin
30, 120: LED module
32, 122: printed circuit board
34, 124: LED element
36: Passive element
40, 130: Front cover
50, 140: Electrical cable
60: cap
62: projection
64: Screw
72: First sealing agent
72: Fourth sealing agent
76: Valve
78: O ring
S: accommodation space
G: Home
h: hole
H: hollow

Claims (8)

A body frame having a receiving space on the front side;
An LED module mounted within the accommodating space of the main body frame and including a printed circuit board and a plurality of LED elements mounted on the printed circuit board;
A front cover assembled to a front surface of the main body frame so that the accommodation space in which the LED module is seated is hermetically sealed;
An electric cable inserted into the accommodating space of the body frame and electrically connected to the LED module in the accommodating space; And
And condensation preventing means installed to prevent condensation from occurring in the accommodation space in which the LED module is seated,
Wherein the condensation preventing means comprises: a condensation preventing hole formed to be connected to the containing space of the main body frame;
A valve installed in the condensation preventing hole; And
And a sealing agent filling the valve,
A cable insertion hole formed to be connected to the accommodation space for inserting the electric cable into the main body frame,
Wherein a portion of the electric cable is peeled off and the cable insertion hole into which the electric cable is inserted and the portion where the cover of the electric cable is peeled are filled with a sealing agent so that the accommodation space is airtight.
The method according to claim 1,
Wherein the front cover includes a transparent plastic substrate or a transparent glass substrate.
The method according to claim 1,
And the condensation preventing hole is formed to protrude from a rear surface of the main body frame.
The method according to claim 1,
Wherein the valve is screwed to the condensation preventing hole under the presence of an O-ring from the front side of the main frame.
The method according to claim 1,
Wherein the valve includes any one of a Dunlop valve, a Schrader valve, and a Presta valve.
The method according to claim 1,
And an inert gas is filled in the accommodating space sealed through the valve.
delete The method according to claim 1,
Further comprising a cable gland coupled to the cable insertion hole,
Wherein a portion of the electric cable whose strip is peeled off is disposed inside the cable gland, and the sealing agent is filled in the cable gland.

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