PH12018000309A1

PH12018000309A1 - Led lighting device

Info

Publication number: PH12018000309A1
Application number: PH12018000309A
Authority: PH
Inventors: Yong Kwan Kim
Original assignee: House and Beyond Co Ltd
Priority date: 2017-10-19
Filing date: 2018-10-15
Publication date: 2019-05-15
Also published as: KR20190043904A

Abstract

The present invention relates to a light emitting diode (LED) lighting device, and more particularly, to an LED lighting device, in which light efficiency of high illumination and high brightness of an LED light source is maximized. The LED lighting device according to the present invention includes: an extrusion-molded frame; a controller board, which is positioned inside the frame, is electrically connected with a printed circuit board (PCB) board assembly (PBA) to control an LED, and is connected with an external power supply; a PBA board that is an electric circuit board, on which a plurality of LEDs is arranged; a light efficient member, which includes reflectors as many as the number of plurality of LEDs at positions corresponding to positions of the plurality of LEDs, the reflector having a shape protruding in a direction of the LED and being connected by a curvature surface, in which an external opened circle have different curvature radiuses; and a transparent or opaque front cover coupled to an outermost side.

Description

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It should be noted that in giving reference numerals to elements of each > drawing, like reference numerals refer to like elements even though like elements are ps : shown in different drawings. Further, in the following description, a detailed explanation of known related constitutions and functions may be omitted when it is - judged that the detailed description may make the subject matter of the present - invention unclear. pa

FIG. 1 is a perspective view of a light emitting diode (LED) lighting device = according to the present invention, and FIG. 2 is an exploded perspective view of the

LED lighting device according to the present invention.

As illustrated in FIGS. 1 and 2, an LED lighting device 10 according to the present invention includes a frame 11, a fixing bracket 12, a front cover 13, a light efficient member 14, lateral covers 15, and a printed circuit board (PCB) board assembly (PBA) board 16.

The frame 11 may be formed of a metal material or a synthetic resin material, and manufactured by extrusion molding, and a length of the frame 11 may be adjusted to a length demanded by a demander according to the manufacturing by extruding molding.

The frame 11 may form a body of the LED lighting device 10, the fixing bracket 12 for fixing may be fastened to a rear surface of the frame 11, the front cover 13, the PBA board 16, a DC/DC controller board 17 may slide from the side and be detachably coupled, and the lateral covers 15 may be fastened to both lateral ends.

The fixing bracket 12 may be fastened to a wall surface or a fixed object to fix the LED lighting device 10, and may have a vertically rotatable structure.

The front cover 13 may be manufactured by transparent or opaque acryl, and may serve as a front cover of the LED lighting device 10.

The light efficient member 14 may be formed of a metal material, and may be ” formed with reflectors as many as the number of LEDs 21 at positions corresponding to o : those of the LEDs 21 therein. co

The PBA board 16 is an electric circuit board, on which the plurality of LEDs - 21 is arranged. -

The DC/DC controller board 17 may be connected with the PBA board 16 to oy electrically control the LED, and may pass through a cable rubber 19 and be connected = with a power supply at an external side. -

Sealing gaskets 18 and the lateral covers 15 may be fastened to both lateral ends of the frame 11 by bolts, respectively.

The LED lighting device 10 has the structure, in which in the state where the front cover 13 laterally slides and is coupled at the outermost side of the frame 11, both lateral ends of the frame 11 are all sealed again by the lateral covers 15 through the sealing gaskets 18, thereby maintaining IP65 for dustproof and waterproof (KS C IEC 60529 Korean Industrial Standard, IEC 60529 International Standard).

Reference numeral 20 is an illumination sensor, and the illumination sensor may be attached with a sensor, which is capable of detecting illumination, and automatically turn on and off the LED 21 according to outside illumination.

FIG. 3 is a diagram illustrating a coupling structure of a lateral surface of the

LED lighting device according to the present invention.

The frame 11 of the LED lighting device 10 of the present invention may be manufactured by extrusion molding, so that a length of the frame 11 is not actually limited, and the frame 11 may be cut in a length desired by a demander and used.

The frame 11 is formed of a continuously connected body 111, and bolting fastening parts 112, which may be coupled with the lateral covers 15, may be formed at four corners of the lateral surfaces (or cross-sections) of the frame 11, and controller - connection recesses 113, through which the DC/DC controller board 17 may laterally o : slide and be fastened, may be formed at both ends of the frame 11 in a lengthwise = direction in an internal lower portion of the frame 11. ©

PBA board connection recesses 114, through which the PBA board 16 may = laterally slide and be fastened, may be formed at both ends of the frame 11 in the © lengthwise direction at an upper end of the frame 11, and a front cover connection @ recess 115 having the form of a T-shape recess may be formed in an upper direction - inside the PBA board connection recess 114, and the front cover connection recesses 115 may also be formed at both ends of the frame 11 in the lengthwise direction.

The light efficient member 14 may be positioned between the front cover 13 and the PBA board 16, and has a cross-section having the form, in which a shape of “E> lies on its side.

The light efficient member 14 is coupled in the form, in which tip end surfaces of lateral plates 14b at both sides of the light efficiency member 14 are in contact with a surface of the PBA board 16, and each of the external surfaces of both lateral plates 14b is in contact with a lateral surface of a tip end of the frame 11, so that the light efficient member 14 has an easily fixable structure without shaking.

FIGS. 4A and 4B are perspective views of the PBA board and the light efficient member in the LED lighting device according to the present invention, and

FIGS. 5A and 5B are a top plan view and a cross-sectional view of a reflector and an

LED of a unit cell of the light efficient member according to the present invention.

FIGS. 4A and 4B are perspective views illustrating a coupling structure of the

PBA board 16 and the light efficient member 14 viewed at different angles.

Referring to FIGS. 4 and 5, the light efficient member 14 may be a sort of a

SEE oo - -

Another object of the present invention for solving the problems in the related art is to provide an LED lighting device, which is easily assembled by manufacturing a & - printed circuit board (PCB), a controller, a light efficient member, and a cover in a i slidable and detachable type by using an extrusion frame. 0

Another object of the present invention for solving the problems in the related = art is to provide an LED lighting device, which has a sealing gasket structure and is “ waterproof for usage outdoor. -

An exemplary embodiment of the present invention provides a light emitting * diode (LED) lighting device, including: an extrusion-molded frame; a controller board, which is positioned inside the frame, is electrically connected with a printed circuit board (PCB) board assembly (PBA) to control an LED, and is connected with an external power supply; a PBA board that is an electric circuit board, on which a plurality of LEDs is arranged; a light efficient member, which includes reflectors as many as the number of plurality of LEDs at positions corresponding to positions of the plurality of LEDs, the reflector having a shape protruding in a direction of the LED and being connected by a curvature surface, in which an external opened circle and an internal opened circle smaller than the external opened circle have different curvature radiuses; and a transparent or opaque front cover coupled to an outermost side.

The light efficient member may include a front plate, both lateral plates bent from the front plate in an orthogonal direction, and reflectors formed in the front plate.

A curvature surface of the reflector may have two curvature radiuses, and a curvature radius of the curvature surface connected with the external opened circle may be smaller than a curvature radius of the curvature surface connected with the internal opened circle in aspect of light efficiency.

The reflector and the LED may have a gap with a predetermined distance.

reflecting device or a lighting shade, and a plurality of reflectors 141 are arranged on a = front plate 14a, and may be formed of a metal material. > : A plurality of LEDs 21 emitting light sources is arranged on the PBA board 16, and the reflectors 141 as many as the number of LEDs 21 are formed, and the LED < 21 and the reflector 141 are positioned at regular arrangement positions. ~

The light efficient member 14 is formed of both lateral plates 14b, which are = bent at both ends in an orthogonal direction based on the front plate 14a, and the = reflectors 141 are formed at the plurality of points of the front plate 14a. -

The reflector 141 has a shape curved in a direction, in which the LED 21 is positioned, based on the front plate 14a, and curved portions may have a plurality of curvature radiuses R1 and R2 and may be connected to each other in a tangent line of the two curvature radiuses.

A tip end portion of the reflector 141 is formed while having a predetermined gap from the portion, in which the LED 21 is positioned.

The gap is maintained by both lateral plates 14b, and the lateral plate 14b may serve to maintain the gap and fix the light efficient member 14.

The reflector 141 has an external circle and an internal circle, in which the external circle has a relatively larger diameter than that of the internal circle, and maintains the curvature radiuses, in which R1 is larger than R2, and may be designed to haveR1=6 mm and R2 =5 mm.

The shape (the two opened circles and the two curvature radiuses) of the reflector 141 and the maintenance of the gap are designed so as to concentrate and diffuse the light source emitted from the LED 21 and emit the light to the outside again while maintaining straightness.

FIGS. 6A to 6C are diagrams illustrating an example of diffusion and concentration of light by the light efficient member in the LED lighting device - according to the present invention. = - FIG. 6A illustrates the form, in which the light source of the LED emits light, = in the cross-sectional view of the reflector and the LED in the cell unit, FIG. 6B i illustrates the form, in which the emitted light source is emitted to a subject surface, and

FIG. 6C schematically illustrates light source forms 142, in which the light sources of o the LEDs 21 are emitted through the reflectors 141 in all of the cells through the light = efficient member 14. -

As illustrated in FIG. 6, the light sources emitted from the LEDs 21 may be collected and diffused along the curvature surfaces of the reflectors 141, and be emitted to the outside through the external opened circles of the reflectors 141 while securing straightness.

It can be seen that from the shape of the reflector 141 and the location relation between the reflector 141 and the LED 21, the light source of the LED 21 has improved light efficiency by about 30%, compared to the case where there is no light efficient member 14.

As described above, the exemplary embodiments have been described and illustrated in the drawings and the specification. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and their practical application, to thereby enable others skilled in the art to make and utilize various exemplary embodiments of the present invention, as well as various alternatives and modifications thereof. As is evident from the foregoing description, certain aspects of the present invention are not limited by the particular details of the examples illustrated herein, and it is therefore contemplated that other modifications and applications, or equivalents thereof, will occur to those skilled in the art. Many

So construction will, however, become apparent to those skilled in the art after considering c the specification and the accompanying drawings.

All such changes, modifications, Lo variations and other uses and applications which do not depart from the spirit and scope “ of the invention are deemed to be covered by the invention which is limited only by the . claims which follow. = ee ——— EE —————— EE —— R=. ; x » ey LED LIGHTING DEVICE -

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TECHNICAL FIELD -

The present invention relates to a light emitting diode (LED) lighting device, and more particularly, to an LED lighting device, in which light efficiency of high illumination and high brightness of an LED light source is maximized.

BACKGROUND ART

A lighting fixture is installed on a ceiling or a support structure inside or outside to light a neighboring area.

As a light source of the lighting fixture, a light emitting diode (LED) having various advantages, such as low power, semi-permanent life, and high illumination (high brightness), is a general trend.

The LED has high straightness and high illumination (brightness), so that when light is directly emitted to a visual field, glaring is caused, and when light is directly continuously and repeatedly emitted to a visual field, eyesight may deteriorate and an optic nerve may be damaged.

Korean Utility No. 385056 discloses “LED Light Mounted to Fluorescent

Light Socket”, in which a diffusion cover, which diffuses and emits light of an LED, is provided in a front direction of the LED.

However, the diffusion cover has a disadvantage in that luminance o (brightness) of light of the LED is decreased which fails make a surrounding area be > : brightly lightened, and the diffusion cover negates high illumination (high brightness) o which is one of the advantages of the LED for preventing glaring or eyesight “ deterioration. .

In order to solve the problem, Korean Patent Application Laid-Open No. 10- = 2011-0059146 discloses “High Illumination Reflector for LED Lighting Unit”. > : Korean Patent Application Laid-Open No. 10-2011-0059146 has the structure, - in which an LED emits light in a front direction to prevent light of the LED from being lost and to lighten a surrounding area more brightly, and it is prevent the light of the

LED from being directly emitted to a visual field of a person to prevent glaring or eyesight deterioration, but in consideration of a characteristic of a light source of the

LED, a light diverging (diffusion) phenomenon inevitably deteriorates light efficiency of the light, so that it is true that there are still drawbacks in an aspect of improving light efficiency. [Related Art Literature] [Patent Document] (Patent Document 0001) 1. Patent Document: Korean Utility No. 20-0385056 (Patent Document 0002) 2. Patent Document: Korean Patent Application

Laid-Open No. 10-2011-0059146

SUMMARY OF THE INVENTION

An object of the present invention for solving the problems in the related art is to improve a structure of a light emitting diode (LED) lighting fixture for improving light efficiency of an LED lighting fixture.

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Lateral covers may be bolt-fastened to both sides of the frame, and a sealing - gasket for sealing may be coupled to an outer portion inside the lateral cover. > : The frame may be formed with controller board connection recesses at inner ce and lower sides of the frame in a lengthwise direction so that the controller board = laterally slides and is coupled, may be formed with PBA board connection recesses at ° lateral ends of both external tip end portions in the lengthwise direction so that the PBA = board laterally slides and is coupled, and may be formed with T-shaped front cover = connection recesses at upper ends of both external tip end portions in the lengthwise direction so that the front cover laterally slides and is coupled.

The light efficient member may include a front plate and both lateral plates bent from the front plate in an orthogonal direction, and external surfaces of both lateral surface plates may be in contact with an upper tip end surface of the frame, and tip end surfaces of both lateral surface plates are in contact with a front surface of the PBA board, so that the light efficient member may be fixed.

According to the configuration of the present invention, it is possible to provide the LED lighting device with improved light efficiency of an LED lighting fixture by increasing straightness of an LED light source and increasing a diffusion property of the LEDL light source by using a diffusion and light concentrating plate.

It is possible to provide the LED lighting device, which is easily assembled by manufacturing a PCB, a controller, a light efficient member, and a cover in a slidable and detachable type by using an extrusion frame, and also provide the LED lighting device, which has a sealing gasket structure and is waterproof for usage outdoor.

The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description. -

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a light emitting diode (LED) lighting device “ according to the present invention. =

FIG. 3 is a diagram illustrating a coupling structure of a lateral surface of the =

LED lighting device according to the present invention.

FIGS. 4A and 4B are perspective views of a printed circuit board (PCB) board assembly (PBA) board and a light efficient member in the LED lighting device according to the present invention.

FIGS. 5A and 5B are a top plan view and a cross-sectional view of a reflector and an LED of a unit cell of the light efficient member according to the present invention.

FIGS. 6A to 6C are diagrams illustrating an example of diffusion and concentration of light by the light efficient member in the LED lighting device according to the present invention.

It should be understood that the appended drawings are not necessarily to scale, presenting a somewhat simplified representation of various features illustrative of the basic principles of the invention. The specific design features of the present invention as disclosed herein, including, for example, specific dimensions, orientations, locations, and shapes will be determined in part by the particular intended application and use environment.

In the figures, reference numbers refer to the same or equivalent parts of the present invention throughout the several figures of the drawing. - : DETAILED DESCRIPTION -

Hereinafter, a structure and an effect of a light emitting diode (LED) lighting “ device according to the present invention will be described with reference to the nN accompanying drawings. >

The detailed description of the specific embodiment illustrated in the = accompanying drawings is read in association with the accompanying drawings, and the a drawing is considered as a part of the description of the entire invention. A direction or directionality is mentioned for convenience of the description, and does not intend to limit the scope of the present invention in any method.

Specifically, terms, such as “lower, upper, horizontal, vertical, upper side, lower side, upper direction, lower direction, upper portion, and lower portion”, indicating a location or derivatives thereof (for example, “horizontally, downwardly, and upwardly”) shall be understood with reference to the described drawings and the relevant descriptions. Particularly, the relative terms are simply for the purpose of convenience of the description, and the apparatus of the present invention is not required to be constituted or operated in a specific direction.

Terms, such as “mounted, attached, coupled, connected, and interconnected”, indicating a mutual coupling relation between the constituent elements may mean the state where individual constituent elements are directly or indirectly attached or connected or fixed unless otherwise mentioned, and shall be understood as a term encompassing the state where the individual constituent elements are unmovably attached, connected, and fixed, as well as the state where the individual constituent elements are movably attached, connected, and fixed.

Claims

. v : WHAT IS CLAIMED IS: -

‘ 1. A light emitting diode (LED) lighting device, comprising: = an extrusion-molded frame; “ a controller board, which is positioned inside the frame, is electrically - connected with a printed circuit board (PCB) board assembly (PBA) to control an LED, io and is connected with an external power supply; = a PBA board that is an electric circuit board, on which a plurality of LEDs is - arranged; a light efficient member, which includes reflectors as many as the number of plurality of LEDs at positions corresponding to positions of the plurality of LEDs, the reflector having a shape protruding in a direction of the LED and being connected by a curvature surface, in which an external opened circle and an internal opened circle smaller than the external opened circle have different curvature radiuses; and a transparent or opaque front cover coupled to an outermost side.
2. The LED lighting device of claim 1, wherein the light efficient member includes a front plate, both lateral plates bent from the front plate in an orthogonal direction, and reflectors formed in the front plate.
3. The LED lighting device of claim 1, wherein a curvature surface of the reflector has two curvature radiuses, and a curvature radius of the curvature surface connected with the external opened circle is smaller than a curvature radius of the curvature surface connected with the internal opened circle.
4. The LED lighting device of claim 1, wherein the reflector and the LED - have a gap with a predetermined distance. =
5. The LED lighting device of claim 1, wherein lateral covers are bolt- “ fastened to both sides of the frame, and a sealing gasket for sealing is coupled to an outer portion inside the lateral cover. oo
6. The LED lighting device of claim 1, wherein the frame is formed with controller board connection recesses at inner and lower sides of the frame in a lengthwise direction so that the controller board laterally slide and is coupled, is formed with PBA board connection recesses at lateral ends of both external tip end portions in the lengthwise direction so that the PBA board laterally slides and is coupled, and is formed with T-shaped front cover connection recesses at upper ends of both external tip end portions in the lengthwise direction so that the front cover laterally slides and is coupled.
7. The LED lighting device of claim 1, wherein the light efficient member includes a front plate and both lateral plates bent from the front plate in an orthogonal direction, and external surfaces of both lateral surface plates are in contact with an upper tip end surface of the frame, and tip end surfaces of both lateral surface plates are in contact with a front surface of the PBA board, so that the light efficient member is fixed.