KR101789735B1 - Power supply-embedded type side lighting lamp - Google Patents

Abstract

The present invention relates to a waterproof surface illuminator, and more particularly, to a waterproof surface illuminator that includes a case made of a transparent material for enhancing waterproofness and hermeticity and for transmitting light by surrounding and illuminating a surface illuminating unit and a surface illuminating unit, .
The present invention differs from the prior art in that a light source is irradiated to a side of a lighting panel while a power supply module and an LED module are provided inside a guide frame, thereby reducing the volume (height) It is possible to prevent deformation and to prevent foreign matter such as dust and moisture from being adhered by covering the surface lighting unit with a transparent case to prevent contamination of the surface lighting unit, improve durability, and improve waterproofness and airtightness.

Description

POWER SUPPLY-EMBEDDED TYPE SIDE LIGHTING LAMP

The present invention relates to a waterproof surface illuminator, and more particularly, to a waterproof surface illuminator that includes a power supply module and an LED module inside a guide frame, It can prevent falling or ceiling deformation when installed on the ceiling. It can prevent foreign matter such as dust and moisture by covering the surface lighting unit with a transparent case to prevent contamination of the surface lighting unit, improve durability, To a waterproof surface illuminating device capable of improving airtightness.

Generally, it is used for manufacturing facilities of ultra-precision products such as semiconductors, electronic parts, clocks, optical instruments, computers and food factories, hospital facilities such as microbiology laboratories, genetic laboratories, infectious disease laboratories, sterile operating rooms, neonatal labor chambers, Clean room facilities are required for the ICU and the ICU that are blocked from the laboratory and outdoors.

These cleanroom facilities require different degrees of cleanliness depending on the application. However, since it is necessary to first minimize airborne particulates, moisture, and waterproofing, it is necessary to eliminate the cause of particulates in all the facilities and facilities provided in the cleanroom do.

In particular, the lighting fixtures used in a clean environment should be clean, clean, and free of air, water, or moisture in accordance with the structure of other air conditioning equipment or system ceiling.

Therefore, the first thing to consider when constructing and installing a cleanroom lighting fixture is how to effectively eliminate the causes of particulates, moisture, and water.

Therefore, it is most important that a cleanroom-dedicated lighting fixture has a gas-tight structure that can completely block air, water or moisture from the outside.

According to the necessity, various types of cleanroom-dedicated lighting fixtures have been proposed. For example, Korean Patent Registration No. 10-1005703 (name: a cleanroom-specific fluorescent lighting fixture, hereinafter referred to as "prior art" .

This prior art has a structure in which a fluorescent lamp is mounted in an upper frame which is embedded in the upper part of the ceiling panel, a connector which is fastened to the lower part of the upper frame and is seated on the upper surface of the ceiling panel, And a light-transmitting glass which is seated in the groove of the inner light-transmitting glass seat of the lower frame and irradiates the light of the light lamp into the inside of the clean room.

The technical structure described above is a background technique for assisting the understanding of the present invention, and does not mean the prior art widely known in the technical field to which the present invention belongs.

Conventional cleanrooms require filters to be installed in various places on the ceiling for air conditioning. When installing the filters, the filter must be drilled in the ceiling with at least the same filter size. In addition, the existing clean room fluorescent lamp apparatus is relatively bulky, and as the weight increases, there is a problem that the ceiling is detached from the ceiling when the ceiling is installed on the perforated ceiling for installing the filter.

In addition, since the existing clean room fluorescent lamp apparatus is covered with the light transmitting glass for waterproof and moisture proof, there is a problem that safety accident occurs when the light transmitting glass falls, and the manufacturing cost of the light transmitting glass is increased.

In addition, the existing clean room fluorescent lamp apparatus has a problem that the durability of the light emitting element is remarkably reduced due to easy penetration of water or moisture, or the illuminance is lowered due to the moisture inside.

Therefore, there is a need to improve this.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a lighting apparatus and a lighting apparatus which have a power supply module and an LED module inside a guide frame, The object of the present invention is to provide a waterproof surface lighting device for preventing falling or deformation of a ceiling when installed on a ceiling.

In addition, the present invention can prevent the surface lighting unit from being contaminated, improve the durability, and replace the contaminated relatively inexpensive case only by covering the surface lighting unit with a transparent case to prevent adhesion of foreign matter such as dust, And it is an object of the present invention to provide a waterproof surface illuminating device which is easy to use.

It is another object of the present invention to provide a waterproof surface illuminating device in which light emitted from a surface illuminating unit is intensively irradiated to the front side or the indoor side of a case by providing an opaque sheet on the rear side of the case.

In addition, the present invention is intended to prevent the degradation of the durability of the LED lighting device due to the inflow of moisture or moisture or the decrease of the light transmittance of the panel due to the inflow of moisture or moisture, by completely covering the surface illuminating unit with the case, The object of the present invention is to provide a waterproof surface illuminator.

A waterproof surface illuminator according to the present invention comprises: a surface illuminator unit which emits light forward; And a case made of a transparent material for enhancing waterproofness and hermeticity by surrounding and protecting the surface illuminating unit and transmitting light.

The surface illuminating unit includes: a surface illuminating panel for uniformly emitting light incident from a side of the edge to the front; A plurality of guide frames provided along edge trajectories of the surface lighting panel to receive and support a portion of an edge of the surface lighting panel; And an LED module mounted inside the at least one guide frame and having an LED element for illuminating and illuminating the side of the surface illuminating panel.

Wherein the case comprises: a housing of an insulating material, which is opened to one side, and which embeds the surface illuminating unit so that a side on which light is emitted through the surface illuminating panel faces a bottom surface; An insulating cover covering the open side of the housing to protect the surface illuminating unit; And a sealing portion that is entirely sealed along a tangent edge or rim of the housing and the cover.

The seal includes: a flange extending along an edge of the housing; And an adhesive member for adhering the flange and the edge of the cover.

The housing may form a concave / convex portion for stiffness and scattering of light.

The case is made of a resin material, and the cover may be opaque or have an opaque sheet to prevent transmission of light.

The surface lighting panel includes a light guide sheet that receives light from a rim and emits light over the entire surface; A reflective sheet disposed on the rear side of the light guide sheet and reflecting light to the front side; A diffusion sheet disposed on the front side of the light guide sheet for diffusing light emitted from the light guide sheet and emitting the light evenly; And a back cover disposed on the rear side of the reflective sheet and made of an opaque material so that light is emitted to the front side of the light guide sheet.

The light guide sheet may be formed with embossed portions on both sides thereof so as to induce even diffusion of light toward the diffusion sheet while reducing the contact area with the reflective sheet.

As described above, the waterproof surface illuminator according to the present invention differs from the conventional art in that a light source is irradiated to a side of a surface illuminating panel while a power supply module and an LED module are provided inside a guide frame, Height) to prevent falling or deformation of the ceiling when installed on the ceiling.

The present invention can prevent contamination of the surface lighting unit, improve durability, and replace only contaminated relatively inexpensive cases by covering the surface lighting unit with a transparent case to prevent adhesion of foreign matter such as dust The cleanliness can be easily maintained.

Further, according to the present invention, since the opaque sheet is provided on the rear side of the case, light emitted from the surface illuminating unit can be intensively irradiated to the front side or the indoor side of the case.

Further, according to the present invention, since the surface lighting unit is completely covered with the case to seal the inside thereof, the durability of the LED lighting device due to the inflow of moisture or moisture or the degradation of the light transmittance of the panel due to moisture or moisture can be prevented have.

1 is a perspective view of a waterproof surface illuminator according to an embodiment of the present invention.
2 is an exploded perspective view of a waterproof surface illuminator according to an embodiment of the present invention, in which a surface illuminating unit and a case are separated.
FIG. 3 is a rear exploded perspective view of a waterproof surface illuminator according to an embodiment of the present invention, in which a surface illuminating unit and a case are separated. FIG.
4 is an exploded perspective view of a surface lighting unit according to an embodiment of the present invention.
5 is a rear exploded perspective view of a surface lighting unit according to an embodiment of the present invention.
6 is an exploded view of a surface lighting panel provided in the surface lighting unit according to an embodiment of the present invention.
7 is a bottom perspective view of a light guide sheet of a surface lighting panel according to an embodiment of the present invention.
8 is an enlarged cross-sectional view showing a laminated state of a surface lighting panel according to an embodiment of the present invention.
9 is a sectional view taken along the line AA in Fig.
10 is a sectional view taken along line BB of Fig.
11 is a top cross-sectional view of a surface lighting unit according to an embodiment of the present invention.

Hereinafter, an embodiment of a waterproof surface illuminator according to the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a perspective view of a waterproof surface illuminator according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of a waterproof surface illuminator according to an embodiment of the present invention, FIG. 6 is a rear exploded perspective view of a waterproof surface illuminator according to an exemplary embodiment of the present invention, in which a surface illuminating unit and a case are separated. FIG.

FIG. 4 is an exploded perspective view of a surface lighting unit according to an embodiment of the present invention, and FIG. 5 is an exploded bottom perspective view of a surface lighting unit according to an embodiment of the present invention.

7 is a bottom perspective view of a light guide sheet of a surface lighting panel according to an embodiment of the present invention, and Fig. 8 is a cross-sectional view of a light guide plate according to an embodiment of the present invention. FIG. 1 is an enlarged cross-sectional view showing a laminated state of a surface lighting panel according to an embodiment of the present invention.

FIG. 9 is a cross-sectional view taken along the line A-A in FIG. 1, FIG. 10 is a cross-sectional view taken along the line B-B in FIG. 1, and FIG. 11 is a plan sectional view of a planar illumination unit according to an embodiment of the present invention.

1 to 11, a waterproof surface illuminator according to an embodiment of the present invention includes a surface illuminator unit 100 and a case 700.

Particularly, the surface lighting unit 100 according to the present invention is made thinner than conventional fluorescent lamps, thereby reducing the total volume, thereby reducing its weight.

The case 700 surrounds the surface lighting unit 100 made of a transparent material to prevent contamination of the surface lighting unit 100.

The surface illumination unit 100 includes a surface illumination panel 200, a guide frame 300, an LED module 400, a power supply module 500, and an insulation guide member 600.

The surface lighting panel 200 serves to uniformly guide the light incident on the edge side of the surface lighting unit 100 to the front side, particularly to the indoor side. In particular, the surface lighting unit 100 according to the present invention can be installed on the ceiling.

The guide frame 300 receives and supports the edge of the surface lighting panel 200 to protect and support the edge of the surface lighting panel 200. In particular, a plurality of guide frames 300 are provided along edge trajectories of the surface illumination panel 200.

That is, the guide frame 300 forms the rim of the surface illumination unit 100. For convenience, the surface lighting panel 200 is assumed to have a rectangular shape. Thus, the guide frame 300 is disposed at four sides of the surface lighting panel 200. [ Of course, the outer shape of the guide frame 300 can be modified into various shapes.

The LED module 400 is installed inside one or more guide frames 300 of the plurality of guide frames 300 and serves to irradiate light toward the edge of the surface illumination panel 200. As a result, the surface lighting panel 200 illuminates by emitting light to one side (front side).

At this time, the LED module 400 includes one or more LED elements 420 that receive power from the outside and emit light, and an illuminated printed circuit board 410 that mounts the set number of LED elements 420.

The LED device 420 is mounted on the illumination printed circuit board 410 and supplies the supplied power to the illumination printed circuit board 410 to emit light. Of course, the illuminated printed circuit board 410 can be deformed into various shapes.

The power supply module 500 is mounted inside one or more guide frames 300 without the LED device 420 to supply power to the LED module 400.

In particular, the power supply module 500 includes a power supply element 520 and a power printed circuit board 510.

The power source device 520 is mounted on the power source printed circuit board 510 and receives power from the outside through the power source printed circuit board 510 or receives power from the outside. The power supply element 520 supplies power to the illumination printed circuit board 410 of the LED module 400.

That is, the power supply printed circuit board 510 of the power supply module 500 is connected to the power supply cable 10 in order to receive power from the outside, and the illumination printed circuit board 410 of the LED module 400 is connected to the power supply print circuit board And is connected to the power printed circuit board 510 via the energizing cable 20 in order to receive power from the substrate 510.

Meanwhile, the guide frame 300 may be made of a metal material to improve durability and strength to prevent deformation from heat generated from the LED device 420 or the power source device 520.

The LED element 420 is soldered to the printed circuit board 410 and the power supply element 520 is soldered to the power printed circuit board 510.

In addition, the LED module 400 and the power supply module 500 are slidably inserted into the same guide frame 300 or another guide frame 300. For convenience, it is assumed that the LED module 400 and the power supply module 500 are inserted into another guide frame 300.

More specifically, the guide frame 300 includes a plurality of guide frames 300, and includes an illumination guide frame 302 for slide-inserting the LED module 400 and a power guide frame 304 for slidably inserting the power supply module 500.

Therefore, the solder portions of the LED element 420 and the illuminated printed circuit board 410 can be brought into contact with the inside of the illumination guide frame 302 made of a metal. In this case, when the soldered portion is in contact with the illumination guide frame 302, a current may flow through the illumination guide frame 302, causing an electric shock, or the soldered portion may be broken.

In order to prevent this, the LED module 400 is inserted into the insulation guide member 600, and the insulation guide member 600 can be slidably inserted into the illumination guide frame 302. The insulation guide member 600 and the LED module 400 can be fixed in the interior of the illumination guide frame 302 by inserting the insulation guide member 600 into the illumination guide frame 302. At this time, the insulation guide member 600 can pass holes corresponding to the LED elements 420 of the LED module 400.

Similarly, the solder portions of the power supply printed circuit board 510 and the power supply device 520 may be in contact with the inside of the power supply guide frame 304 made of a metal. In this case, when the solder portion contacts the power supply guide frame 304, a current may flow through the power supply guide frame 304, causing an electric shock, or the soldered portion may be broken.

To prevent this, the power supply module 500 is inserted into the insulated guide member 600, and the insulated guide member 600 is slidably inserted into the power supply guide frame 304. The insulating guide member 600 and the power supply module 500 can be fixed in the power supply guide frame 304 by inserting the insulating guide member 600 into the power supply guide frame 304. [

The insulation guide member 600 may be made of a plastic material that can be deformed and inserted into the illumination guide frame 302 or the power guide frame 304 in various ways.

The insulated guide member 600 inserts and protects the LED module 400 or the power supply module 500 from the illumination guide frame 302 or the power source guide frame 304 and protects the LED module 400 Or the power supply module 500 is inserted into the lighting guide frame 302 or the power supply guide frame 304. [

For convenience, the insulated guide member 600 is illustrated as being inserted into the power supply guide frame 304 after insertion of the power supply module 500.

On the other hand, the guide frame 300 is arranged in a rectangular trajectory in a plan view. In the drawing, the power supply guide frame 304 is disposed on the upper, lower and left edges of the surface illumination unit 100, Assume that a frame 302 is arranged.

Particularly, the neighboring illumination guide frame 302, the power supply guide frame 304, and the power supply guide frame 304 are connected by the corner frame 370.

The corner frame 370 is provided to assemble and fix neighboring guide frames 302 and 304 and to easily separate neighboring guide frames 302 and 304. The corner frame 370 serves to align and guide the current-carrying cable 20 electrically connecting the LED module 400 and the power supply module 500 in a non-exposed manner.

At this time, the corner frame 370 includes a body 372, a first leg 374, and a second leg 376.

The body 372 is positioned at a corner of a connecting portion between the neighboring illumination guide frame 302 and the power source guide frame 304 and the power source guide frame 304 to perform a finishing process. Of course, the body 372 can be deformed into various shapes.

The first leg 374 extends from the main body 310 and is inserted into the illumination guide frame 302 and the power supply guide frame 304, respectively. That is, the first leg 374 is inserted into each of the illumination guide frame 302 and the power source guide frame 304 constituting the longitudinal side of the guide frame 300. Thus, the LED module 400 inserted into the illumination guide frame 302 and the power supply module 500 inserted into the power supply guide frame 304 are prevented from being separated. Of course, the first leg 374 can be deformed into various shapes.

The second legs 376 extend from the main body 310 and are inserted into the power supply guide frames 304, respectively. That is, the second leg 376 is inserted into each of the power supply guide frames 304 constituting the lateral side of the guide frame 300. Thus, the power supply module 500 inserted into the power supply guide frame 304 is prevented from being detached. Of course, the second leg 376 can be deformed into various shapes.

Particularly, the corner frame 370 can be formed so as not to be inserted more than a certain distance by limiting the degree of insertion into the illumination guide frame 302 and the power supply guide frame 304.

Of course, the corner frame 370 can be deformed into various shapes.

The planar illumination panel 200 uniformly emits light incident from the LED module 400 to the front side of the LED module 400 through the diffusion sheet 210, the light guide sheet 220, the reflective sheet 230, And a back cover 240.

In particular, the diffusion sheet 210, the light guide sheet 220, the reflection sheet 230, and the back cover 240 are stacked in order from the front side to the back side. Of course, the diffusion sheet 210, the light guide sheet 220, the reflection sheet 230, and the back cover 240 may each be stacked one layer or more as needed. For convenience, the diffusion sheet 210, the light guide sheet 220, the reflection sheet 230, and the back cover 240 are provided one by one.

At this time, the light guide sheet 220 receives the light emitted from the LED device 420 from the edge side, and induces light to be emitted across the entire surface.

The diffusion sheet 210 functions to scatter and diffuse the light emitted from the LED device 420 of the LED module 400. Since the LED is a point light source that generates light at one point, When used as a light source, the light source may be exposed or glazed. To prevent this, a diffusion sheet 210 is provided.

Here, the diffusion sheet 210 can be manufactured by extrusion molding polystyrene (PS) or polycarbonate (PC). In the diffusion sheet 210, bubbles or diffusers having different refractive indices And the bubbles or diffusing agent refracts and reflects the light incident on the diffusion sheet 210.

Particularly, when bubbles or a diffusing agent (not shown) are sufficient in the diffusion sheet 210, when the light incident from the rim of the diffusion sheet 210 is emitted to the outside of the front side of the diffusion sheet 210, The intensity becomes uniform and the divergence angle becomes large.

The reflective sheet 230 is disposed on the rear side of the light guide sheet 220 to reflect light toward the front side. That is, light emitted from the LED device 420 flows into the light guide sheet 220 from one side edge of the light guide sheet 220, and the light is emitted to the front and rear sides of the light guide sheet 220. At this time, the light emitted to the rear side of the light guide sheet 220 is reflected by the reflection sheet 230 and is guided to the front side of the light guide sheet 220. As a result, the lightness of the light emitted to the front side of the light guide sheet 220 is improved.

The light emitted to the front side of the light guide sheet 220 spreads evenly throughout the diffusion sheet 210, thereby preventing glare.

The back cover 240 is disposed on the rear side of the reflective sheet 230 and is made of an opaque material so that the light is intensively emitted to the front side of the light guide sheet 220. That is, light emitted from the LED device 420 flows into the light guide sheet 220 from one side edge of the light guide sheet 220, and the light is emitted to the front and rear sides of the light guide sheet 220.

At this time, a part of the light emitted to the rear side of the light guide sheet 220 is reflected by the reflection sheet 230 and is guided to the front side of the light guide sheet 220, but the remaining light is emitted to the rear side of the reflection sheet 230. Light emitted to the rear side of the reflective sheet 230 is reflected by the back cover 240 and is emitted to the front side of the reflective sheet 230 and the front side of the light guide sheet 220 and then uniformly emitted through the diffusion sheet 210, .

In particular, the size and number of the diffusion sheet 210, the light guide sheet 220, the reflection sheet 230, and the back cover 240 are not limited.

In addition, the surface lighting panel 200 may further include a first protect sheet 202 and a second protect sheet 204.

The first protection sheet 202 protects the diffusion sheet 210 from the outside and the second protection sheet 204 protects the back cover 240 from the outside. Accordingly, the surface lighting panel 200 is arranged in the order of the first protect sheet 202, the diffusion sheet 210, the light guide sheet 220, the reflection sheet 230, the back cover 240 and the second protect sheet 204 .

Of course, the edges of the first protect sheet 202 and the second protect sheet 204 are supported and protected by the guide frame 300 and the corner frame 370. At this time, the first protect sheet 202 and the second protect sheet 204 are made of a relatively inexpensive material such as a resin material to reduce the replacement cost.

The light guide sheet 220 generates heat by directly introducing light from the LED element 420. The light guide sheet 220 is formed by stacking the front side of the diffusion sheet 210 and the rear side of the diffusion sheet 210, So that heat can not be released.

In order to prevent this, the light guide sheet 220 has embossed protrusions 222 protruding from the front side and the back side. The embossed protrusion 222 protruding from the rear surface of the light guide sheet 220 minimizes the contact area with the reflective sheet 230 to protect the reflective sheet 230 and protrudes in an approximately triangular- . Of course, the embossed protrusion 222 protruding from the rear surface of the light guide sheet 220 can be applied to various shapes that minimize the contact area with the reflective sheet 230.

The embossing portion 222 protruding from the front surface of the light guide sheet 220 may be formed in a convex emboss shape so that the light spreads uniformly and flows into the diffusion sheet 210. Of course, the embossing portion 222 protruding from the front surface of the light guide sheet 220 can be applied in various shapes so that the light spreads evenly.

The first protection sheet 202, the diffusion sheet 210, the light guide sheet 220, the reflection sheet 230, the back cover 240, and the second protect sheet (s) 204 may be of the same size and guided to be completely overlaid.

To this end, the body 372 of the corner frame 370 includes a first protective sheet 202, a diffusion sheet 210, a light guide sheet 220, a reflective sheet 230, a back cover 240, And an aligning corner member 371 corresponding to each vertex of the concave portion 204. The alignment corner member 371 is formed so that the first protection sheet 202, the diffusion sheet 210, the light guide sheet 220, the reflection sheet 230, the back cover 240 and the second protection sheet 204 are completely superimposed. It serves as a guide. Of course, the alignment corner member 371 can be deformed into various shapes.

The guide frame 300 constituting the frame of the surface illumination unit 100 includes a first protection sheet 202, a diffusion sheet 210, a light guide sheet 220, a reflection sheet 230, a back cover 240, And the second protect sheet 204, by receiving the edge of the surface illuminated panel 200. [0064]

In particular, the guide frame 300 includes a body 310, an insertion space 320, a support rib 330, and a push stopper 340.

The main body 310 forms the outer shape of the guide frame 300 and forms the rim of the surface illumination unit 100. Of course, the main body 310 can be deformed into various shapes.

The insertion space 320 is a space formed along the axial direction on the inside of the main body 310 so that the LED module 400, the insulation guide member 600 or the power supply module 500 can be slidably inserted . Particularly, the insertion space 320 is formed to be open to the side of the surface lighting panel 200 so that the light of the LED device 420 is diverted to the light guide sheet 220 side. At this time, the illumination guide frame 302 and the power supply guide frame 304 may be formed in the same shape so as to be compatible with each other.

The support rib 330 is formed to extend in parallel to the main body 310 so as to form the receiving recess 332 for receiving the edge of the surface illuminated panel 200. Thus, the support ribs 330 support the upper and lower sides of the surface illumination panel 200 in contact with each other. Of course, the support rib 330 can be deformed into various shapes. The depth of the receiving groove 332 is not limited.

The push stopper 340 protrudes from the support rib 330 and presses the surface lighting panel 200 accommodated in the accommodation groove 332. [ At this time, the push stopper 340 may protrude from each of the inner side surfaces of the support ribs 330 facing each other, or protrude from one of the support ribs 330. The push stopper 340 serves to prevent the diffusion sheet 210, the light guide sheet 220, the reflection sheet 230, and the back cover 240, which form the surface lighting panel 200, do. Of course, the push stopper 340 is not limited to the shape and the number.

The guide frame 300 may be formed separately from the receiving groove 332 to form an alignment groove 350 for receiving and aligning the power cable 10 connecting the external power source and the power supply module 500 . The alignment groove portion 350 is formed in the body 310 along the axial direction.

The guide frame 300 may be provided with a guide rib 360 to prevent or reduce shaking of the power cable 10 aligned in the alignment groove 350. At this time, the guide ribs 360 may be formed by cutting a part of the rear side of the main body 310 and extending to be bent inside the alignment grooves 350 to align the power cable 10. The number and shape of the guide ribs 360 are not limited.

On the other hand, the case 700 includes a housing 710, a cover 720, and a sealing portion 730.

The housing 710 embeds the surface illuminating unit 100 such that the side where the light is emitted through the surface illuminating panel 200, that is, the first protect sheet 202 faces the bottom surface. Particularly, as the height of the surface illumination unit 100 becomes similar to the internal height of the housing 710 or is lower than the internal height of the housing 710, the surface illumination unit 100 is completely embedded in the housing 710 . As a result, the surface illumination unit 100 can be protected from foreign matter such as dust as much as possible.

At this time, the housing 710 is made of a transparent material so as to transmit the light emitted through the surface lighting panel 200 to the bottom surface, and may be made of an insulating material. Of course, the thickness of the housing 710 is not limited. In particular, the housing 710 is formed so as to open upward to facilitate the accommodating and mounting of the surface illumination unit 100.

In addition, the housing 710 may be made of an insulating material, particularly a resin material, to prevent electric shock or corrosion. In addition, the housing 710 is manufactured in a single molding process through the production of a mold, so that it is possible to prevent foreign matter from adhering to the jointed portion as the jointed portion is eliminated, .

In addition, the cover 720 serves to protect the surface illumination unit 100 from the foreign matter by blocking the opened upper side of the housing 710. At this time, the power cable 10 is inserted into the cover 720 and can receive power from the outside. Of course, the cover 720 can be deformed into various shapes and can be made of an insulating material.

Likewise, the cover 720 may be made of an insulating material, particularly a resin material, to prevent electric shock or corrosion. The lid 720 is manufactured in a single molding process through the production of a mold, so that it is possible to prevent foreign matter from adhering to the jointed portion, as compared with the case where the lid 720 is formed by bonding and connecting after processing into several pieces .

On the other hand, the cover 720 can be prevented from being stacked or deposited due to the flat top surface of the cover 720, which is tangent to the ceiling as much as possible or fixed to the ceiling as close as possible to the ceiling.

In addition, the sealing portion 730 serves to seal the entire portion along the rim or rim of the housing 710 and the lid 720. As a result, the case 700 can maximally protect the surface illumination unit 100 from foreign substances such as dust and moisture as the interior of the case 700 is fully sealed. Particularly, the surface illumination unit 100 does not require additional heat radiation treatment by using the LED element 420 that emits light even at a low current, so that thermal deformation does not occur even when the case 700 is completely sealed by the case 700.

Of course, a plurality of pinholes (not shown) may be formed on the lower side of the housing 710, in particular, to dissipate heat in the case 700.

In particular, the seal 730 includes a flange 732 and an adhesive member 734.

The flange 732 is formed continuously along the rim of the housing 710. Of course, the shape and size of the flange 732 are not limited.

The adhesive member 734 serves to adhere the flange 732 and the edge of the lid 720 to each other.

At this time, the adhesive member 734 can be applied in various ways such as an adhesive. Particularly, the case 700 is made of a resin material to reduce the manufacturing cost and to reduce the weight. Thus, the adhesive member 734 is applicable to a double-sided tape so that a small adhesive force and a portion where the flange 732 and the lid 720 adhere can be dropped with a small force.

Particularly, the adhesive member 734 is applied so as to prevent exposure to the outside of the contact portion between the flange 732 and the cover 720, thereby preventing foreign matter from adhering.

On the other hand, the housing 710 can form a concave / convex portion 712 for stiffness and light scattering.

Accordingly, light having a linearity through the LED element 420 spreads first through the diffusion sheet 210, is secondarily diffused through the embossing portion 222, is further diffused through the irregular portion 712 do.

Thus, the surface illuminating unit 100 covering the case 700 can protect the operator's eyes or can be applied to a mood as the light is guided to maximally spread.

Of course, the shape of the concave-convex portion 712 can be variously applied.

Further, the housing 710 has stiffness more than when it is flat by forming the recessed portion 712 on the bottom surface. That is, when the bottom is flat, the housing 710 may be bent or stretched downward due to the heat of the interior of the building or the heat of the LED elements 420. However, the internal stress of the housing 710 is increased by the concave and convex portions 712, so that deformation due to heat is prevented or minimized.
On the other hand, the housing 710 forms a planar guide frame 300, in particular, a surface contact portion 714 for seating the illumination guide frame 302 and the power supply guide frame 304 in surface contact with each other. In detail, the housing 710 supports the guide frame 300 by forming a continuously flat surface contact portion 714 along the edge of the recessed portion 712. As a result, as the guide frame 300 is supported by the surface contact portion 714, the surface illumination unit 100 is stably received inside the housing 710. [

In addition, the cover 720 may be opaque or have an opaque sheet 750 to prevent transmission of light.

For convenience, the lid 720 is assumed to be attached with an opaque sheet 750. Accordingly, the light irradiated into the case 700 through the first sheet 202 is concentrated on the bottom surface side of the housing 710 while being reflected by the opaque sheet 750.

After the flange 732 of the housing 710 and the lid 720 are bonded together, the case 700 is fixed to the ceiling by the fastening member 760. In particular, the fastening member 760 is bound to the ceiling through the flange 732 portion.

Therefore, the lightweight surface illumination unit 100 is installed on the ceiling by the fastening member 760 while being protected by the case 700, compared with the conventional fluorescent lamp. Here, the fastening member 760 is a mechanical fastening element such as a bolt or a screw.

Since the surface lighting panel 200 is completely covered by the housing 710 and the lid 720, external moisture or moisture does not flow into the LED module 400, so that the durability of the LED module 400 Lt; / RTI > Since the moisture or moisture is not attached to the inner surface of the surface lighting panel 200, the illuminance of the light emitted from the LED module 400 is maintained or improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, 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. I will understand. Accordingly, the true scope of the present invention should be determined by the following claims.

100: face lighting unit 200: face lighting panel
210: diffusion sheet 220: light guide sheet
222: embossed portion 230: reflective sheet
240: back cover 300: guide frame
302: illumination guide frame 304: power guide frame
310: main body 320: insertion space part
330: Support rib 340: Push stopper
350: alignment groove portion 360: guide rib
370: Corner frame 372: Body
374,376: first and second legs 400: LED module
500: power supply module 600: insulated guide member
700: Case 710: Housing
712: concave / convex portion 720: cover
730: Sealing part 732: Flange
734: Adhesive member 750: Opaque sheet
760: fastening member

Claims (6)

A side illuminating unit for emitting light to the front side; And a case made of a transparent material for enhancing waterproofness and airtightness by surrounding and protecting the surface illuminating unit and transmitting light,
The surface illuminating unit includes: a surface illuminating panel for uniformly emitting light incident from a side of the edge to the front; A plurality of guide frames provided along edge trajectories of the surface lighting panel to receive and support a portion of an edge of the surface lighting panel; And an LED module mounted inside the at least one guide frame and having an LED element for illuminating and illuminating the side of the surface illuminating panel,
Wherein the case comprises: a housing of an insulating material, which is opened to one side, and which embeds the surface illuminating unit so that a side on which light is emitted through the surface illuminating panel faces a bottom surface; An insulating cover covering the open side of the housing to protect the surface illuminating unit; And a sealing portion that is entirely sealed along a tangent edge or rim of the housing and the cover,
Wherein the housing has a concavo-convex portion for reinforcing rigidity, and a planar contact portion is formed along an edge of the concavo-convex portion to support the guide frame.
delete The sealing member according to claim 1,
A flange extending along an edge of the housing; And
And an adhesive member for adhering the flange and the edge of the lid to each other.
delete The method according to claim 1,
The case is made of a resin material,
Wherein the lid is opaque or opaque to prevent transmission of light.
The method according to claim 1,
The surface lighting panel includes a light guide sheet that receives light from a rim and emits light over the entire surface;
A reflective sheet disposed on the rear side of the light guide sheet and reflecting light to the front side;
A diffusion sheet disposed on the front side of the light guide sheet for diffusing light emitted from the light guide sheet and emitting the light evenly; And
And a back cover disposed on the rear side of the reflective sheet and made of an opaque material so that light is emitted to the front side of the light guide sheet,
Wherein the light guide sheet has embossed portions formed on both side surfaces thereof so as to induce even diffusion of light toward the diffusion sheet while reducing the contact area with the reflective sheet.

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