WO2016171505A1

WO2016171505A1 - Led lighting device

Info

Publication number: WO2016171505A1
Application number: PCT/KR2016/004203
Authority: WO
Inventors: 김덕용; 이태우; 유승범
Original assignee: 주식회사 케이엠더블유
Priority date: 2015-04-23
Filing date: 2016-04-22
Publication date: 2016-10-27
Also published as: KR20160127216A

Abstract

The present invention relates to an LED lighting device comprising: a diffusion part which is in the shape of a canister having an opened upper surface and has a through-hole provided at the center of the lower surface thereof; a substrate fixing part which fixes a substrate, having an LED mounted thereon, at the lower side of the through-hole of the diffusion part in a state in which the substrate is inserted through the through-hole; and a reflection part which has the center of a lower surface brought into contact with the central part of the substrate and provides a reflection surface having a curved surface so that the gap with the diffusion part increases toward the edge thereof. The present invention has the effect of illuminating an entire ceiling with even light distribution because of installation at the center of the ceiling, thereby being capable of preventing occurrence of glare phenomenon and enabling indirect lighting to be used as main lighting.

Description

LED lighting

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

In general, lighting devices using LEDs as light sources have been developed in consideration of problems such as high power consumption and short lifespan of conventional light source means. When LED is used as a light source, the life of the lighting device is significantly increased compared to the existing light source, and thus the amount of waste emitted is significantly reduced to prevent environmental pollution, and it is expected to contribute to energy saving due to low power consumption. have.

However, LED is a point-type light source, and in order to use it as a light source without glare, it must be a structure capable of surface emission, and is usually attached to the ceiling for indoor lighting.

Such lighting is referred to as direct lighting, and indirect lighting is to illuminate a room with the reflected light and to illuminate the ceiling or wall.

As an example of an indirect lighting device using a conventional LED Patent No. 10-1015257 (registered February 9, 2011, there is a luminaire for indirect lighting device using the LED).

The luminaire for the indirect lighting device described in the registered patent makes a surface contact with a side surface of an arc-shaped main body, a PCB board inside the main body, a fixing bracket for adjusting the angle of the main body, and a connection frame embedded in a ceiling or a wall. It consists of an adhesive member.

In other words, the connection frame is embedded in a part of the wall or ceiling, and is configured to support the bar-shaped LED lighting unit (body) by using a fixing bracket fixed by an adhesive member in the connection frame.

Since the conventional indirect lighting device is basically embedded in the wall, it can only be installed on a part of the wall. Therefore, the indirect lighting device is used when directing the atmosphere or lighting with low illumination in a room with direct lighting. will be.

That is, to be installed separately from the name of the cast, there is a problem that the installation cost of the lighting device is increased, and in the current market there is a demand for a lighting device that can be used as a mood light and casting name as a single light.

The technical problem to be solved by the present invention in consideration of the above problems is to provide an LED lighting device that can illuminate a large area of a large ceiling without being installed in contact with the wall by providing a wide light distribution with a low height. have.

Another object of the present invention is to provide an LED lighting device without glare, and indirectly illuminates the room by illuminating the ceiling.

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

The LED lighting device of the present invention for solving the above problems, the upper surface is open cylindrical and the diffusion portion provided with a hole in the center of the bottom surface, the substrate mounted with the LED is inserted through the through hole of the diffusion portion A substrate fixing portion for fixing the substrate in the lower portion of the through hole, and a central portion of the bottom portion in contact with the central portion of the substrate, and a reflecting portion for providing a curved reflective surface so that the distance to the diffusion toward the edge increases.

LED lighting device of the present invention is installed in the center of the ceiling to illuminate the entire ceiling with even light distribution, it is possible to prevent the occurrence of glare phenomenon and can use indirect lighting as the cast name.

In addition, the LED lighting apparatus of the present invention, since the shape of the light distribution is low in height and has a wide shape, it is possible to illuminate a large area by one indirect illumination, thereby reducing the light loss has the effect of increasing the efficiency of the illumination.

1 is an exploded perspective view of an LED lighting apparatus according to a preferred embodiment of the present invention.

FIG. 2 is a cross-sectional view of the coupled state of FIG. 1.

Figure 3 is a bottom use state diagram in the installation state of the present invention.

4 is a perspective view of FIG. 3.

5 is a simulation result diagram of a state of indirectly illuminating an indoor ceiling of a predetermined area in an installed state.

Description of the sign

100: diffusion unit 110: diffusion plate

120: anti-glare 130: side plate

140: Through 200: Reflective part

300: Board High Government 310: Board

320: LED 400: diffusion bar

Hereinafter, the LED lighting apparatus of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view of the LED lighting apparatus according to a preferred embodiment of the present invention, Figure 2 is a cross-sectional configuration of the coupling state of FIG.

1 and 2 respectively, the LED lighting apparatus according to the preferred embodiment of the present invention, the through-hole 140 is provided in the center of the bottom and diffuser 100 for diffusing light and the diffuser 100 The substrate fixing part 300 is fixed to the through hole 140 in a state where the substrate 310 is inserted, and the bottom end is in contact with the central portion of the substrate 310, and the gap between the diffusion part 100 is increased toward the outside. It comprises a reflecting portion 200 is formed to form a light emitting opening between the diffusion portion 100.

Hereinafter, the configuration and operation of the LED lighting apparatus according to a preferred embodiment of the present invention configured as described above in more detail.

First, a material of the diffusion part 100 may use a translucent resin material, the shape of which is a cylindrical structure having an upper surface open.

The diffusion part 100 is a diffusion plate 110 forming a bottom of a cylindrical structure and a side plate 130 protruding upward from an upper edge of the diffusion plate 110 to be in contact with the bottom edge of the reflector 200. ).

A through hole 140 is formed in the center of the diffuser plate 110, and an anti-glare unit 120 protrudes upward from the upper surface of the diffuser plate 110 of the through hole 140.

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

The diffusion plate 110 has a structure inclined such that the central portion where the through hole 140 is formed is positioned at a lower position than the edge where the side plate 130 contacts. 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 also emitted to the lower side of the diffusion plate 110 in the installation state.

The substrate fixing part 300 is fixed to the through hole 140 of the diffusion part 100 having the structure as described above to fix the substrate 310 having the LEDs 320 mounted thereon.

The substrate fixing part 300 may also use a translucent resin material, and has a diameter larger than the diameter of the through hole 140, and may be fixed to the bottom surface of the diffuser plate 110 around the through hole 140. At this time, the fixing can use a variety of means such as bonding or fastening.

A plurality of LEDs 320 having a light emitting surface facing upward are mounted on an upper portion of the substrate 310 positioned above the substrate fixing part 300. In this case, the LEDs 320 are arranged to be positioned only at the top edge of the substrate 310.

In this structure, when the central portion of the reflector 200 is in contact with the upper surface of the substrate 310 inward of the positions of the LEDs 320, the light emitted from the LEDs 320 is emitted from the reflector 200. Reflected and diffused through the diffuser 100 so as to be discharged to the ceiling and the lower side of the diffuser plate 110 as an installation surface.

More specifically, the light emitted from the LEDs 320 is reflected from the bottom surface of the reflector 200, and the light emitted through the side plate 130 is wide and has a narrow upper and lower height to illuminate a wide range of ceilings. The light emitted from the LEDs 320 is reflected by the reflector 200 and the light emitted through the diffuser plate 110 is emitted downward to illuminate the direct direction.

Therefore, when only the ceiling of the side of the installation position of the present invention is illuminated, it is possible to prevent the direction immediately below the installation position from being dark, thereby forming an even light distribution as a whole.

In addition, the LED 320 may appear to appear brighter than other places in the form of dots on the side plate 130 or the diffusion plate 110 by the light emitted directly without being reflected from the reflecting unit 200, this In order to prevent the present invention, the light emitted from the LED 320 is diffused through the anti-glare unit 120 using the anti-glare unit 120 protruding upward on the diffusion plate 110 around the through hole 140. This can be prevented by doing so.

The characteristics of the light distribution as described above may be changed by the curvature of the bottom surface of the reflector 200. This reflector 200 directly affects light distribution, and preferably, the diameter of the reflector 200 is larger than the diameter of the diffusion plate 110.

Therefore, the side plate 130 of the diffusion portion 100 has a larger structure than the diameter of the contact portion with the diffusion plate 110 of the upper diameter is lower.

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

In addition, 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 have a longitudinal structure.

The addition of the diffusion bars 400 may give a slight change in the light distribution, and in particular, when the present invention is installed with the naked eye, it is possible to implement a more beautiful lighting device by putting a differential on the brightness of a part of the side surface.

Figure 3 is a bottom use state diagram in the installation state of the present invention, Figure 4 is a perspective view of Figure 3, Figure 5 is a simulation result of a state indirectly illuminating the indoor ceiling of a predetermined area in the installation state.

Referring to FIGS. 3 to 5, the position of the diffusion bar 400 is brighter than the brightness of the side plate 130, and the substrate fixing part 300 may be black because light is not transmitted. The light emitted through the diffusion plate 110 may make the illuminance in the direct direction of the substrate fixing part 300 at the same level as other regions.

It will be apparent to those skilled in the art that the present invention is not limited to the above embodiments and may be variously modified and modified without departing from the technical spirit of the present invention. will be.

The present invention is to be able to illuminate the entire ceiling of a relatively large area with a single lighting device, there is no need to install a plurality of lighting devices to reduce the cost, to provide an indoor lighting without glare, industrial There is possibility.

Claims

A diffusion portion having an open top surface and a through hole provided in a center of the bottom surface thereof;

A substrate fixing part for fixing the substrate below the through hole in a state in which an LED mounted substrate is inserted through the through hole in the diffusion part; And

The center of the bottom of the substrate is in contact with the center of the bottom, LED lighting apparatus including a reflector for providing a reflective surface of the curved surface so that the distance to the diffusion portion toward the edge.
The method of claim 1,

The diffusion unit,

A diffusion plate provided with the through hole in the center;

A side plate protruding upward from an upper edge of the diffuser plate to be in contact with a lower end of the reflector; And

LED lighting device including an anti-glare portion protruding upward from the upper portion of the diffusion plate along the circumference of the through hole to prevent the direct light emitted from the LED from being emitted through the side plate.
The method of claim 2,

The diffusion plate,

LED peripheral device characterized in that the periphery of the through hole is inclined to increase in height toward the edge.
The method of claim 2,

The diameter of the reflector is larger than the diameter of the diffuser plate, the side plate is inclined so that the upper side is located outside the lower side than the LED lighting apparatus.
The method of claim 4, wherein

LED lighting device, characterized in that the inner side of the side plate is attached to a plurality of longitudinally long diffusion bar.