KR20160127216A

KR20160127216A - LED lighting device

Info

Publication number: KR20160127216A
Application number: KR1020150057379A
Authority: KR
Inventors: 김덕용; 이태우; 유승범
Original assignee: 주식회사 케이엠더블유
Priority date: 2015-04-23
Filing date: 2015-04-23
Publication date: 2016-11-03
Also published as: WO2016171505A1

Abstract

The present invention relates to an LED illumination device, and more particularly, to an LED illumination device which includes a diffusion part having a cylindrical shape with an open upper surface and a through hole formed at the center of a bottom surface thereof, And a reflector for providing a reflective surface of a curved surface so that the center of the substrate is in contact with the center of the bottom surface and the gap between the substrate and the diffuser increases toward the edge. The present invention is installed at the center of the ceiling to illuminate the entire ceiling with a uniform light distribution to prevent the occurrence of glare and to use indirect lighting as main illumination.

Description

{LED lighting device}

The present invention relates to an LED lighting device, and more particularly, to an LED lighting device installed in a ceiling and having a wide ceiling illumination area.

In general, in consideration of problems such as high power consumption and short life span of existing light source means, illumination devices using LED as a light source have been developed. When the LED is used as a light source, the lifetime of the lighting device is remarkably increased compared to the conventional light source. Therefore, it is expected that the emission amount of waste can be remarkably reduced to prevent environmental pollution and contribute to energy saving by low power consumption have.

However, in order to use the LED as a light source without glare, the LED must have a structure capable of emitting light, and it is usually mounted on a ceiling for indoor lighting.

These lights are called direct lighting. Indirect lighting is to illuminate the ceiling or wall with light and illuminate the room with the reflected light.

As an example of an indirect lighting apparatus using a conventional LED, there is a registered trademark 10-1015257 (registered for February 9, 2011, a lamp for an indirect lighting apparatus using LED).

The lamp for the indirect lighting device described in the patent is characterized in that it has a main body having a circular arc shape, a PCB substrate inside the main body, a fixing bracket capable of adjusting the angle of the main body, and a side wall of the connecting frame embedded in the ceiling or wall And an adhesive member.

That is, a connection frame is embedded in a part of a wall or a ceiling, and a bar-shaped LED lighting unit (main body) is supported by using a fixing bracket fixed by an adhesive member in the connection frame.

Since such a conventional indirect lighting apparatus is basically buried in a wall surface, it is only necessary to install it on only a part of the wall surface. Therefore, the indirect lighting apparatus can be used when directing an atmosphere or requiring low- will be.

That is, it is necessary to install the lighting device separately from the casting name, thus increasing the installation cost of the lighting device. In the current market, a lighting device capable of being used as a main lighting device such as a mood lighting device is required.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide an LED lighting device capable of illuminating a wide area of a large ceiling without providing a low- have.

Another object of the present invention is to provide an LED lighting device which is glare free and indirectly illuminates a room by illuminating a ceiling.

Another object of the present invention is to provide an LED lighting device capable of light distribution with high uniformity throughout the entire lighting area around an installation position.

According to an aspect of the present invention, there is provided an LED illumination device including a diffusion portion having a cylindrical shape with an open top and a through hole formed at the center of a bottom surface thereof, And a reflector for providing a reflective surface of a curved surface such that the center of the bottom of the substrate is in contact with the center of the substrate and the gap between the substrate and the diffuser increases toward the edge.

The LED lighting apparatus according to the present invention is installed at the center of the ceiling to illuminate the entire ceiling with a uniform light distribution to prevent the occurrence of glare and to use indirect lighting as main illumination.

Further, since the shape of the light distribution of the present invention has a low height and a wide shape, it is possible to illuminate a large area with one indirect lighting, thereby reducing light loss and improving the efficiency of illumination.

1 is an exploded perspective view of an LED illumination apparatus according to a preferred embodiment of the present invention.
Fig. 2 is a cross-sectional view of the coupling state of Fig. 1. Fig.
Fig. 3 is a bottom view showing the state of use of the bottom in the installed state of the present invention.
4 is a perspective view of FIG.
5 is a simulation result of a state in which a room ceiling with a predetermined area is indirectly illuminated in an installed state.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an LED illumination device according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an exploded perspective view of an LED illumination apparatus according to a preferred embodiment of the present invention, and FIG.

1 and 2, an LED illumination apparatus according to a preferred embodiment of the present invention includes a diffusion unit 100 provided with a through hole 140 at the center of a bottom surface thereof for diffusing light, A substrate fixing part 300 which fixes the substrate 310 in a state where the substrate 310 is inserted into the through hole 140 of the substrate 310 and a bottom end of the substrate 310 is in contact with the center part of the substrate 310, And a reflector 200 which forms a light outgoing opening with respect to the diffusion part 100.

Hereinafter, the configuration and operation of the LED illumination device according to the preferred embodiment of the present invention will be described in detail.

First, the diffusion part 100 may be made of a translucent resin material, and the shape of the diffusion part 100 is a cylindrical structure whose upper surface is opened.

The diffusion unit 100 includes a diffusion plate 110 forming a bottom surface of a cylindrical structure and a side plate 130 protruding upward from a top edge of the diffusion plate 110 and contacting the bottom edge of the reflection unit 200 ).

The diffusion plate 110 is vertically formed with a through hole 140 at the center thereof and an anti-glare unit 120 protruding upward is protruded from the upper surface of the peripheral diffusion plate 110 of the through hole 140.

The anti-glare unit 120, the diffusion plate 110, and the side plate 130 may be integrally formed, separately manufactured, and bonded or bonded to each other.

The diffusion plate 110 is inclined so that the central portion formed with the through hole 140 is located at a lower position than the edge where the side plate 130 is in contact. By inclining the diffusion plate 110 in this manner, it is possible to form a light distribution in which the light of the LED 320 is emitted to the lower side of the diffusion plate 110 in the installed state.

The substrate fixing part 300 is fixed to the through hole 140 of the diffusion part 100 having the above structure in a state where the substrate 310 with the LEDs 320 mounted thereon is inserted.

The substrate fixing part 300 can also be made of a translucent resin material and has a diameter larger than the diameter of the through hole 140 so that it can be fixed to the lower surface of the diffusion plate 110 around the through hole 140. At this time, various means such as adhesion and fastening can be used.

A plurality of LEDs 320 with a light emitting surface facing upward are mounted on the substrate 310 located above the substrate fixing part 300. At this time, the LEDs 320 are arranged to be located only on the upper surface edge of the substrate 310.

When the central portion of the reflective portion 200 is in contact with the upper surface of the substrate 310 located inside the position of the LEDs 320, the light emitted from the LED 320 is reflected by the reflective portion 200 And is diffused through the diffusion unit 100 to be emitted to the ceiling which is an installation surface and the lower side of the diffusion plate 110. [

More specifically, the light emitted from the LEDs 320 is reflected by the bottom surface of the reflector 200 and emitted through the side plate 130. The light emitted from the LEDs 320 has a wide width and a narrow vertical height, And the light emitted from the LEDs 320 is reflected by the reflection unit 200 and emitted through the diffusion plate 110 is emitted downward to illuminate the downward direction.

Therefore, when the ceiling of the mounting position side of the present invention is illuminated only by the ceiling, it is possible to prevent the direct downward direction of the mounting position from being darkened, thereby forming a uniform light distribution as a whole.

In addition, a portion of the side plate 130 or the diffusion plate 110 may appear to be brighter than other portions in dot form due to the light directly emitted from the LED 320 without being reflected by the reflection unit 200, The light emitted from the LED 320 may be diffused through the anti-glare unit 120 using the anti-glare unit 120 protruded upward from the diffusion plate 110 around the through hole 140. [ .

The light distribution characteristic can be changed by the curvature of the bottom surface of the reflective portion 200. This is because the reflector 200 directly affects the light distribution, and the diameter of the reflector 200 is preferably larger than the diameter of the diffuser plate 110.

Therefore, the side plate 130 of the diffusion part 100 has a larger diameter than the diameter of the portion of the side plate 130 which is in contact with the diffusion plate 110 whose diameter is downward.

The size of the reflector 200 is for illuminating the entire ceiling by irradiating light having a low height and a wide distribution on the ceiling.

Further, the present invention may further include diffusion bars 400 which are in contact with the inner surface of the side plate 130, spaced apart from each other by a predetermined distance, and long in the longitudinal direction.

The addition of the diffusion bars 400 can slightly change the light distribution. In particular, when the present invention is installed with the naked eye, it is possible to realize a more beautiful illumination device by setting a difference in the brightness of a part of the side.

FIG. 3 is a bottom view of the bottom surface in the installed state of the present invention, FIG. 4 is a perspective view of FIG. 3, and FIG. 5 is a simulation result in a state of indirectly illuminating a ceiling of a predetermined area in an installed state.

3 to 5, the position of the diffusion bar 400 is brighter than the brightness of the side plate 130, and the substrate fixing unit 300 can be seen as black because the light is not transmitted therethrough The illuminance in the downward direction of the substrate fixing part 300 can be made to be the same level as the other areas by the light emitted through the diffusion plate 110.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention will be.

100: diffusion part 110: diffusion plate
120: anti-glare part 130: side plate
140: through hole 200:
300: substrate fixing unit 310: substrate
320: LED 400: diffusion bar

Claims

A diffusion part having a cylindrical shape with an opened upper surface and a through hole at the center of the bottom;
A substrate fixing part for fixing the substrate on the lower side of the through hole in a state where the substrate on which the LED is mounted is inserted through the through hole of the diffusion part; And
And a reflective portion that provides a reflective surface of a curved surface such that the center of the bottom surface is in contact with the center of the substrate and the distance from the diffusion portion to the edge increases.

The method according to claim 1,
Wherein,
A diffusion plate having a through hole vertically disposed at a center thereof;
A side plate protruding upward from an upper edge of the diffuser plate and contacting the lower end of the reflector; And
And an anti-glare unit protruding upward from an upper portion of the diffusion plate along the periphery of the aperture to prevent the direct light emitted from the LED from being emitted through the side plate.

3. The method of claim 2,
The diffuser plate
Wherein a peripheral portion of the through hole is low and inclined so that the height becomes higher toward the edge.

3. The method of claim 2,
Wherein the diameter of the reflective portion is larger than the diameter of the diffusion plate, and the side plate is inclined such that the upper side is positioned on the outer side with respect to the lower side.

5. The method of claim 4,
Wherein a plurality of longitudinally extending diffusion bars are attached to the inner surface of the side plate.