KR20170038517A - LED light fixture - Google Patents

LED light fixture Download PDF

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Publication number
KR20170038517A
KR20170038517A KR1020150137987A KR20150137987A KR20170038517A KR 20170038517 A KR20170038517 A KR 20170038517A KR 1020150137987 A KR1020150137987 A KR 1020150137987A KR 20150137987 A KR20150137987 A KR 20150137987A KR 20170038517 A KR20170038517 A KR 20170038517A
Authority
KR
South Korea
Prior art keywords
substrate
light source
light
present
lighting device
Prior art date
Application number
KR1020150137987A
Other languages
Korean (ko)
Inventor
지재근
이진우
Original Assignee
호서대학교 산학협력단
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 호서대학교 산학협력단 filed Critical 호서대학교 산학협력단
Priority to KR1020150137987A priority Critical patent/KR20170038517A/en
Publication of KR20170038517A publication Critical patent/KR20170038517A/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/65—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction specially adapted for changing the characteristics or the distribution of the light, e.g. by adjustment of parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F21V19/003—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
    • F21V19/0035—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources the fastening means being capable of simultaneously attaching of an other part, e.g. a housing portion or an optical component
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
    • F21V3/0445—
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2101/00—Point-like light sources

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

The present invention relates to an LED light fixture that provides wide light distribution by extending a directivity angle. The LED light fixture includes a substrate; a light source mounted on the substrate; and a lighting cover which has a hemispherical shape for accommodating the substrate and the light source, a diffusion surface formed on a circumferential surface and a reflection surface formed on a central part.

Description

LED light fixture

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an LED lighting device, and more particularly, to an LED lighting device that extends a directivity angle to provide a wide light distribution.

In general, incandescent lamps or fluorescent lamps are often used as indoor or outdoor lighting lamps. Such incandescent lamps or fluorescent lamps have a short lifetime and therefore require frequent replacement.

In order to solve such a problem, a lighting apparatus employing an LED having characteristics of excellent controllability, fast response speed, high electro-optical conversion efficiency, long lifetime, low power consumption and high luminance has been developed.

That is, the LED (Light Emitting Diode) has advantages of low power consumption because it has high photoelectric conversion efficiency, and is not a thermally dischargeable light emitting device.

In addition, because there is no gas or filament, LED is safe and stable against impact, and stable DC lighting method is adopted, so power consumption is low, it is possible to repeat repetition, pulse movement, reduce the fatigue of optic nerve, It is possible to produce a variety of color lighting effects, and it is advantageous in that it can be miniaturized by using a small light source.

FIG. 1 is a perspective view showing a general LED lighting device. This conventional LED lighting device includes a substrate 12 on which a plurality of LED elements 11 are mounted, A heat sink 13 protruding from an outer surface of the heat sink 13 so as to be widened by a heat radiation area and a socket 15 connected to an external power source, And a transparent cover 16 for protecting the LED element 11 from the external environment.

However, since the LED element 11 forms a divergent angle of 120 to 130 degrees at the time of light emission, when the lighting device is implemented using such an LED element 11, the LED element 11 is concentratedly focused only forwardly, The light distribution is displayed.

Accordingly, there is a problem that the illuminance distribution can not be sufficiently secured in the indoor or outdoor space because the light distribution distribution that appears in the incandescent lamp at the time of light emission, that is, the light distribution distribution that distributes the light to the side, can not be provided.

Korean Patent Publication No. 2012-0057486

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 apparatus having a wide distribution of light distribution by distributing a part of light generated from a light source to a side surface of a lighting apparatus,

In order to achieve the above objects, the present invention provides a semiconductor device comprising: a substrate; A light source mounted on the substrate; An illumination cover having a hemispherical shape for accommodating the substrate and the light source therein and having a diffusing surface formed on the circumferential surface and a reflecting surface formed on the center portion; .

The reflecting surface may have a conical shape recessed at a central portion of the illuminating cover, and the diffusing surface and the reflecting surface may be composed of a translucent material and a transparent material, respectively.

The LED lighting device according to the embodiment of the present invention can distribute a part of the light generated from the light source to the side of the lighting device to secure a wide distribution of light with a widened directivity angle, Can be provided.

1 is a perspective view showing a general LED lighting device.
Fig. 2 is an exemplary view schematically showing an LED lighting device according to an embodiment of the present invention; Fig.
FIG. 3 is an exemplary view showing a light traveling direction through an LED lighting device according to an embodiment of the present invention; FIG.
FIG. 4 is a view showing a state where light is diffused through an LED lighting device according to an embodiment of the present invention; FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In addition, the preferred embodiments of the present invention will be described below, but it is needless to say that the technical idea of the present invention is not limited thereto and can be variously modified by those skilled in the art.

FIG. 2 is an exemplary view schematically showing an LED lighting device according to an embodiment of the present invention, FIG. 3 is an exemplary view showing a traveling direction of light through an LED lighting device according to an embodiment of the present invention, Is an example of a state where light is diffused through an LED lighting device according to an embodiment of the present invention.

As shown in FIG. 1, an LED lighting apparatus 100 according to an embodiment of the present invention includes a substrate, a light source installed at a central portion of the substrate through an SMT mounting method, a substrate, and a light cover for accommodating the light source therein.

The substrate 110 is a substrate member electrically connected to an external power source supplied through a power cable (not shown) and having a pattern circuit formed on a top surface thereof so as to be electrically connected to a light emitting source.

The substrate 110 is mounted on the upper surface of the heat sink though not shown in the figure via the heat radiating pad 112. The heat sink generates heat generated when the light source 120 mounted on the substrate 110 emits light And is made of a metal material having excellent thermal conductivity such as aluminum so as to be discharged to the outside.

At least one light source 120 may be installed, and a plurality of light sources may be installed on the substrate at predetermined intervals.

The substrate 110 and the light source 120 have a hemispherical shape and are accommodated in an illumination cover 130 having a receiving space therein.

The illumination cover 130 includes a reflective surface 132 having a center portion recessed to a predetermined depth and a diffusing surface 134 having an overall structure of the illumination cover 130 except for the reflective surface 132.

The diffusing surface 134 is configured to move light emitted from the light source 120 in a lateral direction, and the synthetic resin is made of a translucent material.

At this time, the reflecting surface 132 is formed to be recessed at a certain depth in the central part of the diffusing surface 134, that is, the vertical direction of the light source 120.

The reflective surface 132 is made of a transparent material such as synthetic resin, unlike the diffusing surface 134, so that the light emitted from the light source 120 is incident on the surface while advancing in the vertical direction, do.

The reflecting surface 132 has a conical shape whose inside diameter is narrower than the outside, and one or a plurality of reflecting surfaces 132 may be formed as necessary.

Therefore, the light traveling in the vertical direction of the light source 120 out of the light emitted from the light source 120 travels laterally after colliding with the surface of the reflection surface 132, The light intensity in the lateral direction of the light source 120 is higher than that in the center of the light source 120.

It will be apparent to those skilled in the art that various modifications, substitutions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. will be. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not to limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100: Lighting fixture
110: substrate
120: Light source
130: Lighting cover
132: Reflecting surface
134:

Claims (3)

Board;
A light source mounted on the substrate; And
An illumination cover having a hemispherical shape for accommodating the substrate and the light source therein, the diffusion cover having a diffusion surface on a peripheral surface thereof and the reflection surface on a central portion thereof; And an LED lighting device.
The method according to claim 1,
Wherein the reflecting surface is formed in a concave shape having a predetermined depth recessed in a central portion of the illuminating cover.
The method according to claim 1,
Wherein the diffusing surface and the reflecting surface are composed of a translucent material and a transparent material, respectively.

KR1020150137987A 2015-09-30 2015-09-30 LED light fixture KR20170038517A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150137987A KR20170038517A (en) 2015-09-30 2015-09-30 LED light fixture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150137987A KR20170038517A (en) 2015-09-30 2015-09-30 LED light fixture

Publications (1)

Publication Number Publication Date
KR20170038517A true KR20170038517A (en) 2017-04-07

Family

ID=58583727

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150137987A KR20170038517A (en) 2015-09-30 2015-09-30 LED light fixture

Country Status (1)

Country Link
KR (1) KR20170038517A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017171364A2 (en) 2016-03-28 2017-10-05 주식회사 엘지화학 Organic solar cell module and method for manufacturing same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120057486A (en) 2010-11-26 2012-06-05 서울반도체 주식회사 LED Illumination Equipment

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120057486A (en) 2010-11-26 2012-06-05 서울반도체 주식회사 LED Illumination Equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017171364A2 (en) 2016-03-28 2017-10-05 주식회사 엘지화학 Organic solar cell module and method for manufacturing same

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E902 Notification of reason for refusal
E601 Decision to refuse application