WO2016148503A1

WO2016148503A1 - Led illumination device

Info

Publication number: WO2016148503A1
Application number: PCT/KR2016/002643
Authority: WO
Inventors: 여진수; 유승범; 김덕용
Original assignee: 주식회사 케이엠더블유
Priority date: 2015-03-19
Filing date: 2016-03-16
Publication date: 2016-09-22
Also published as: KR20160113506A; KR101741160B1

Abstract

The present invention relates to an LED illumination device, which comprises: a lower housing (200) that is made of a resin material, has a light emitting opening (210) arranged at the bottom thereof, has a diameter decreasing toward the upper side, and has a seating surface (230) at a part of the inner diameter; an upper housing (100) that is made of a metal material, is coupled to the upper portion of the lower housing (200), has a power supply unit (140) inserted therein, and has a substrate (300) which has an LED (310) installed thereon and is coupled to a seating surface (160) around a bottom opening part; and a diffusion plate (240) stably placed on the seating surface (230) of the lower housing (200).

Description

LED lighting

The present invention relates to an LED lighting device, and more particularly to an LED lighting device embedded in the ceiling.

Generally, lighting devices including LED lighting devices basically take the form of emitting light from a surface for diffusion. This is common to bulb type lighting devices, surface lighting devices, and stand type lighting devices, and the beauty of the lighting is not in the light itself, but is determined by the specificity or color of the external design of the lighting device.

As an example of the surface-emitting lighting apparatus, the surface lighting apparatus uses a diffusion plate having a predetermined area as a cover. For example, Patent No. 10-0998980 (Registration Date December 1, 2010). 4, which is a representative view of the registered patent, mounts a substrate on which a plurality of LEDs are disposed to emit light upward, and includes at least one or more diffusion layers on the upper side of the substrate, thereby emitting light emitted from the plurality of LEDs. It is a configuration that allows them to be diffused so that they can be illuminated with a constant illuminance across a certain size plane.

Such a configuration is a general configuration of a conventional lighting device that emits light from the surface described above, the diffusion plate is effective in preventing the occurrence of glare by preventing the light from being concentrated in a part, but the light loss is high light efficiency There was a problem of this deterioration. This reduction in light efficiency causes a decrease in the energy consumption efficiency of the lighting device because more power must be used for the same illumination.

In other words, in order to provide a surface light source with sufficient illuminance, the number of LEDs must be used more than necessary, so the advantage of low power consumption of LED lighting is faded, and it is not easy to process the heat emitted from the LEDs. There was a problem that the life of the can be shortened.

Patent No. 10-1143344 (Ceiling-embedded downlight luminaire, registered on April 30, 2012) as a prior art for ceiling-embedded lighting, commonly referred to as 'downlights', describes in detail the structure and operation of downlights. It is.

1 is a representative view of the registered Patent No. 10-1143344.

Referring to FIG. 1, a configuration of a conventional LED lighting apparatus will be described. A printed circuit board 4 having an LED 5 mounted thereon and heat dissipated from the LED 5 may be radiated from the printed circuit board 4. A heat sink 1 having a plurality of 'C' shaped grooves formed on the heat dissipation fins to be coupled to the rear surface of the heat sink 1, and the printed circuit board 4 and the heat sink 1 are coupled to each other in a cylindrical shape having a vertical opening. Step (2) is formed on the upper inner circumferential surface to be mounted, coupled to the illumination cylinder (7) and the lower end of the illumination cylinder (7) having a plurality of guide grooves formed on the outer circumferential surface, transparent or translucent cover lens (11) inside ), A cap 9 is mounted.

It comprises a heat sink 3 for transferring the heat of the printed circuit board 4 to the heat sink (1).

The printed circuit board 4 mounted with the LED 5 is described, and a separate heat sink 1 is used to dissipate heat generated from the printed circuit board 4, and the heat sink 1 ) And a heat sink 3 capable of transferring heat between the printed circuit board 4 and the printed circuit board 4.

This is because the LEDs 5 mounted on the printed circuit board 4 are equally spaced and distributed. Therefore, the heat is difficult to be discharged, and a heat dissipation structure having a complicated configuration is required.

In addition, since the heat sink 1, the illumination cylinder 7, and the heat sink 3 are separately manufactured, the heat sink 1 and the heat sink 3 need to be combined, thereby increasing the time and cost required for manufacturing.

And there is no reference to a power supply for supplying a static power source of direct current to the LED (5) in the conventional drawings, in this case, it will be understood that the power supply is installed outside the lighting cylinder 7 of the prior art. Can be.

Therefore, when it is necessary to install the power supply in a separate position as described above, there is an inconvenience in that a separate wiring work is required because the wire of the power supply should be connected to the printed circuit board 4.

The technical problem to be solved by the present invention in view of the above problems is to provide an LED lighting device to install the LED only in the circumference of the lighting device to prevent heat concentration phenomenon, and to facilitate the emission of heat.

In addition, another object of the present invention is to provide an LED lighting device that can accommodate the power supply unit to simplify the wiring work.

In addition, another object of the present invention is to provide an LED lighting device to install a power supply unit and a substrate therein through a light emitting port, and to be combined without a separate fastening means.

In addition, the present invention divides the housing into the upper housing and the lower housing, the lower housing is made of a resin material, the upper housing is a metal material by using a material suitable for each characteristic, LED lighting apparatus that can increase the efficiency and reduce the cost In providing.

In addition, to provide an LED lighting device that can be firmly fixed without fastening the diffusion plate by a fastening means.

LED lighting apparatus of the present invention for solving the above problems, the light emitting port 210 is provided on the bottom, the diameter decreases toward the top, the resin material lower housing having a seating surface 230 in the inner diameter portion 200 And, coupled to the upper portion of the lower housing 200 and the power supply unit 140 is inserted therein, the substrate 300 mounting the LED 310 is coupled to the seating surface 160 around the bottom opening The metal upper housing 100 and a diffusion plate 240 mounted on the mounting surface 230 of the lower housing 200.

The LED lighting apparatus of the present invention has an effect of increasing heat dissipation efficiency by installing only the peripheral portion of the LED in a lighting apparatus having a structure embedded in the ceiling, except for the center portion of the substrate installed horizontally on the ceiling.

In addition, the present invention is integrally molded with the upper housing and the heat dissipation fins, there is no need for a separate assembly process has the effect of reducing the manufacturing cost and improve productivity.

In addition, the present invention has an effect that the upper housing is made of metal, the power supply is built in the upper housing, and the upper edge of the substrate is directly in contact with the bottom of the upper housing to easily dissipate heat of the LED mounted on the substrate. have.

In addition, the present invention inserts the diffusion plate into the lower housing before the tableware when forming the lower housing, so that the diffusion plate can be firmly fixed when the lower housing is cooled, thereby providing a diffusion plate without using a fastening means Fixing has the effect of reducing manufacturing costs and improving productivity.

1 is a block diagram of a conventional LED lighting device.

2 is a block diagram of an LED lighting apparatus according to a preferred embodiment of the present invention.

3 is an exploded perspective view of FIG. 2.

Figure 4 is a cross-sectional configuration of the combined state of the LED lighting apparatus according to a preferred embodiment of the present invention.

Description of the sign

100: upper housing 101: hall

110: power connection portion 120: space

130: heat radiation fin 140: power supply

150: fastening protrusion 160: seating surface

200: lower housing 210: light exit

220: anti-glare 230: seating surface

240: diffusion plate 241: diffusion pattern

250: fastening projection 300: substrate

310: LED 400: high government

410: rotating part 420: elastic locking part

430: hook 500: wire

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

2 is a configuration diagram of the LED lighting apparatus according to a preferred embodiment of the present invention, Figure 3 is an exploded perspective view of Figure 2, Figure 4 is a cross-sectional view of FIG.

2 to 4 respectively, the LED lighting apparatus according to the preferred embodiment of the present invention, the light emitting port 210 is provided on the bottom, the lower housing 200 is gradually reduced in diameter toward the top, and The upper housing 100 is coupled to the upper part of the lower housing 200 and the power supply 140 is inserted therein, and the substrate 300 on which the LED 310 is mounted is coupled to the seating surface 160 around the bottom opening. ), And a diffusion plate 240 seated on the seating surface 230 of the lower housing 200.

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, the upper housing 100 is formed integrally with a metal material, and the bottom is open, and a space 120 through which the power supply 140 is inserted is provided inside the opened bottom.

The shape of the upper housing 100 has a circular opening at the bottom, and a seating surface 160 having a predetermined area is provided around the opening, and a plurality of heat dissipation fins 130 protrude from the upper side of the seating surface 160. .

In addition, a plurality of fastening protrusions 150 protrude outward from the seating surface 160 and are fastened by fastening means such as a lower housing 200 and bolts to be described later.

A hole 101 through which the space portion 120 may communicate with the outside may be formed in a portion of the upper side of the upper housing 100, and the wire 500 is connected from the outside through the hole 101. And may be supplied to the power supply unit 140.

The power supply unit 140 serves to supply DC power to the substrate 300 by receiving external power, and may be connected to a neighboring LED lighting device through a power connection unit 110.

On the contrary, AC power supplied to the power supply unit 140 may be supplied through the power connection unit 110, and DC power may be supplied to the power supply unit 140 of the adjacent LED lighting apparatus through the wire 500. have.

The upper edge of the substrate 300 is seated on the seating surface 160 of the upper housing 100, and is tightly fixed to the seating surface 160 by bolts or adhesives.

Therefore, heat generated from the plurality of LEDs 310 mounted on the substrate 300 may be easily conducted and radiated to the heat radiating fins 130 through the substrate 300 and the mounting surface 160.

In order to increase the efficiency of heat dissipation, the substrate 300 may preferably use a metal PCB.

In addition, the plurality of LEDs 310 mounted on the substrate 300 may be disposed on the lower side of the seating surface 160 instead of being positioned at the center of the substrate 300.

This may be understood as to increase the effect of heat radiation by conducting heat generated in the LEDs 310 which are substantially heat sources in the direct direction.

The lower housing 200 is coupled to the lower portion of the upper housing 100 configured as described above.

The overall shape of the lower housing 200 is a structure in which the inner diameter becomes wider toward the lower portion, and a step is provided in a part of the inner diameter to form a seating surface 230 on which the diffusion plate 240 is seated.

The lower housing 200 is preferably integrally molded with a resin material.

The lower end of the lower housing 200 is formed with an anti-glare portion 220 which is convex downward. The anti-glare unit 220 serves to reflect the light diffused from the diffusion plate 240 so as not to directly enter the eye of the human body, and may have an appropriate light distribution.

A plurality of fastening protrusions 250 are provided at an upper circumference of the lower housing 200, and fastening a fastening means such as a bolt in a state facing the fastening protrusion 150 provided in the upper housing 100, thereby providing a firm coupling. It can be done.

In such a structure, the light emitted from the LED 310 is diffused from the diffuser plate 240 positioned in the middle of the height direction of the lower housing 200 to provide a surface light source, and in particular, the diffuser plate 240. The diffusion pattern portion 241, which is an uneven surface, is provided at the central portion of the to facilitate the diffusion of light.

As such, the light diffused from the diffuser plate 240 is emitted to the outside through the light emitting port 210 of the lower housing 200.

The diffusion plate 240 is not fixed to the seating surface 230 of the lower housing 200 by a separate fastening means, but is fixed in the fitted state.

Thus, the effect obtained by not using the fastening means is simple because the structure does not need to form a bolt insertion hole to fasten the fastening means, and the cost is high when fastening using the fastening means such as bolts. It can be expected that the effect of increasing the time required for manufacturing and preventing the productivity from decreasing is increased.

To this end, in the present invention, the lower housing 200 is made of a resin material, and then integrally injected. At this time, considering that the lower housing 200 has a relatively higher temperature immediately after the injection and shrinks finely as the temperature decreases with time, the diffusion plate at the light emitting port 210 side of the lower housing 200 immediately after the injection. Push in 240 until it contacts the seating surface 230.

As mentioned above, when the lower housing 200 is relatively high after injection, the pressurization of the diffusion plate 240 is very easy, and when the lower housing 200 cools to room temperature, the diffusion plate is minutely contracted and is finely contracted. 240 can be firmly fixed.

Therefore, the present invention can fix the diffusion plate 240 without using a separate fastening means.

Alternatively, the diffusion plate 240 may be fixed by pressing the lower housing 200 in a completely cured state.

A part of an outer surface of the lower housing 200 is provided with a fixing part 400 for fixing the lower housing 200 to the ceiling. In this case, the rotating part 410 constituting the fixing part 400 may also be integrally formed with the lower housing 200, and the elastic locking part 420 may be made of metal and may rotate about the rotating part 410. The rotating part 410 may be fitted and fixed.

In addition, it may be configured to further include a ring 430 in order to secure a more robust fixing and stability against disasters such as earthquakes.

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 increase the heat dissipation efficiency of the light embedded in the ceiling, can reduce the glare, there is industrial applicability.

Claims

The light emitting port 210 is provided on the bottom, and the diameter decreases toward the upper portion, the resin material lower housing 200 having a seating surface 230 in the inner diameter portion;

A metal upper housing coupled to an upper portion of the lower housing 200 and having a power supply 140 inserted therein and a substrate 300 mounted with an LED 310 coupled to a seating surface 160 around a bottom opening. 100; And

LED lighting device comprising a diffusion plate 240 seated on the seating surface 230 of the lower housing (200).
The method of claim 1,

The LED 310 mounted on the substrate 300 is an LED lighting apparatus, characterized in that located in the direction directly below the seating surface (160).
The method of claim 1,

LED lighting apparatus, characterized in that a plurality of heat dissipation fins 130 are provided integrally on the seating surface 160 of the upper housing 100.
The method of claim 1,

The diffusion plate 240,

Immediately after molding of the lower housing 200, the lower housing 200 is inserted into the lower housing 200 and is in contact with the seating surface 230, so that the lower housing 200 is firmly fixed as the temperature of the lower housing 200 is lowered. LED lighting device characterized in that.
The method of claim 4, wherein

The diffusion plate 240,

LED lighting device, characterized in that the diffusion pattern 241 is formed in an uneven structure in the center portion.
The method of claim 1,

The power supply unit 140,

The external AC power is supplied through the wire 500 to supply the DC power to the substrate 300 as well as to supply the DC power to the other LED lighting device through the power connection unit 110, or

LED lighting, characterized in that the external AC power is supplied through the power connection unit 110 to supply the DC power to the substrate 300 as well as to supply the DC power to the other LED lighting device through the wire 500. Device.