KR20140059447A - Illuminating device - Google Patents
Illuminating device Download PDFInfo
- Publication number
- KR20140059447A KR20140059447A KR1020120125925A KR20120125925A KR20140059447A KR 20140059447 A KR20140059447 A KR 20140059447A KR 1020120125925 A KR1020120125925 A KR 1020120125925A KR 20120125925 A KR20120125925 A KR 20120125925A KR 20140059447 A KR20140059447 A KR 20140059447A
- Authority
- KR
- South Korea
- Prior art keywords
- light source
- light
- source array
- light sources
- resin layer
- Prior art date
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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
- F21K9/20—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
- F21K9/235—Details of bases or caps, i.e. the parts that connect the light source to a fitting; Arrangement of components within bases or caps
-
- 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
- F21K9/68—Details of reflectors forming part of the light source
-
- 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
- F21K9/69—Details of refractors forming part of the light source
-
- 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
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
- F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- General Engineering & Computer Science (AREA)
- Planar Illumination Modules (AREA)
Abstract
A resin layer formed on the printed circuit board and embedding the light source unit; a resin layer formed on the printed circuit board and the resin layer, the resin layer being formed on the printed circuit board, The light source unit includes at least one light source array in which a plurality of light sources are disposed, thereby achieving the effect of reducing the overall thickness and securing flexibility of the light source unit Accordingly, not only the effect of improving the degree of design freedom in product designing but also various arrangements of light sources according to the luminous flux and the directing angle are possible, thereby maximizing the uniformity of the entire surface light source.
Description
The present invention relates to a lighting device, and more particularly, to a lighting device that can reduce the thickness of a light guide plate to reduce a thickness of a light guide plate, secure a light efficiency, control hot spots by arranging various light sources, and maximize the uniformity of the entire light source To a structure of a lighting device.
The LED (Light Emitted Diode) device is a device that converts electric signals into infrared rays or light using compound semiconductor characteristics. Unlike fluorescent light, unlike harmful substances such as mercury, it does not cause environmental pollution, It has a long lifetime advantage. In addition, it consumes low power compared to conventional light sources, has high visibility due to high color temperature, and has a small glare.
Therefore, the current illumination device has been developed to use a conventional light source such as a conventional incandescent lamp or a fluorescent lamp as a light source. In particular, as disclosed in Korean Patent Laid-Open No. 10-2012-0009209, A light emitting device that performs a surface light emitting function is provided.
1 and 2 schematically show a
The light L incident on the
The light guide plate 30 functions to improve the brightness of the
SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above-mentioned problems of the prior art, and it is an object of the present invention to reduce the thickness of the entire light source by guiding light emitted from the light source unit to the outside by using a resin layer without using a light guide plate, And it is an object of the present invention to provide a lighting device structure capable of maximizing the uniformity of the entire light source by arranging the light sources in consideration of the distribution, thereby realizing an optimal surface emission image quality.
Another object of the present invention is to provide a structure of a lighting apparatus which can ensure reliability while improving the degree of freedom of product design by making the lighting apparatus itself flexible.
According to an aspect of the present invention, there is provided a lighting apparatus comprising: a printed circuit board; A light source unit formed on the printed circuit board; A resin layer formed on the printed circuit board and embedding the light source unit; And a reflective sheet formed between the printed circuit board and the resin layer and penetrating the light source unit. The light source unit may include at least one light source array in which a plurality of light sources are disposed.
In the illumination apparatus of the present invention, the light source array may be arranged in a line with a plurality of light sources at predetermined intervals.
In the illumination apparatus of the present invention, the light source unit may be composed of a first light source array and a second light source array which are electrically insulated and driven separately.
In the illumination apparatus of the present invention, the interval between the first light source array and the second light source array may be 10 to 30 mm.
In the illumination apparatus of the present invention, the distance between the light sources included in the first light source array and the distance between the light sources included in the second light source array may be 12 to 30 mm.
In the illumination apparatus of the present invention, the light sources included in the first light source array and the light sources included in the second light source array may be arranged in a zigzag manner.
In the illumination apparatus of the present invention, the light sources included in the first light source array and the light sources included in the second light source array may be arranged in a one-to-one correspondence.
In the illumination apparatus of the present invention, the light sources included in the first and second light source arrays may be individually driven.
In the illumination apparatus of the present invention, a plurality of light sources may be irregularly arranged in any one of the first light source array and the second light source array.
In the illumination apparatus of the present invention, the light emitting directions of the light sources included in the first light source array and the light sources included in the second light source array may be different from each other.
In the illumination apparatus of the present invention, the light flux of the light sources included in the first light source array may be different from the light flux of the light sources included in the second light source array.
In the illumination device of the present invention, the light source may be a side view type light emitting diode.
In the illumination device of the present invention, a reflection pattern may be formed on the reflection sheet.
In the illuminating device of the present invention, a diffusion plate may be formed on the resin layer.
In the illumination device of the present invention, an air gap may be formed between the resin layer and the diffusion plate.
The illumination device of the present invention may further include an optical sheet formed between the resin layer and the diffusion plate and dispersing light emitted therefrom.
In the illumination device of the present invention, the resin layer may be formed of silicon, silica, glass bubble, PMMA, urethane, Zn, Zr, Al 2 O 3 , acryl, And a bead made of any one selected from among the beads.
In the lighting apparatus of the present invention, the printed circuit board may be a flexible printed circuit board.
According to the present invention, by removing the light guide plate and guiding light by using the resin layer, it is possible to reduce the number of light sources and to reduce the overall thickness of the lighting apparatus.
Further, according to the present invention, flexibility can be ensured by forming a lighting device using a flexible printed circuit board and a resin layer, and various arrangements of light sources are possible, thereby maximizing the uniformity of the entire surface light source, Can be increased.
In addition, according to the present invention, by providing a reflection sheet and a reflection pattern, which are structures that can efficiently reflect light emitted from the light source unit, it is possible to maximize the luminance improvement as well as improve the reflectance of light, and provide a uniform planar light source There is an effect that can be done.
Figures 1 and 2 schematically illustrate a conventional illumination device structure.
3 shows a main part of a lighting apparatus according to the present invention.
FIGS. 4 to 10 are plan views illustrating embodiments of a structure in which light sources are arranged. FIG.
11 shows a structure in which a diffusion plate is added to the illumination apparatus of the present invention shown in Fig.
Fig. 12 shows a structure in which a reflection pattern is added to the illumination apparatus of the present invention shown in Fig.
13 shows a structure in which an optical substrate is added to the illumination device of the present invention shown in Fig.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood, however, that the embodiments described herein and the configurations shown in the drawings are only a preferred embodiment of the present invention, and that various equivalents and modifications may be made thereto at the time of the present application. DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail to avoid obscuring the subject matter of the present invention. The following terms are defined in consideration of the functions of the present invention, and the meaning of each term should be interpreted based on the contents throughout this specification. The same reference numerals are used for portions having similar functions and functions throughout the drawings.
The present invention relates to a lighting apparatus using an LED as a light source, and a structure that can reduce the total thickness of the lighting apparatus, ensure flexibility, and reduce the number of light sources by removing the light guide plate and replacing it with a resin layer To be provided.
In addition, the lighting device according to the present invention is applicable to various lamp devices requiring illumination, such as a vehicle lamp, a domestic lighting device, and an industrial lighting device. For example, when it is applied to a vehicle lamp, it can be applied to a headlight, a vehicle interior light, a door scarf, a rear light, and the like. In addition, the illumination device of the present invention can be applied to a backlight unit field applied to a liquid crystal display device, and can be applied to all lighting-related fields that are currently developed, commercialized, or can be implemented according to future technology development.
3 shows a main part of a lighting apparatus according to the present invention.
3, a
The printed
The light source unit is a part where a plurality of
The
The
The
The
According to the present invention, since the thickness of the conventional light guide plate can be reduced by the presence of the
The
A reflection pattern may be formed on the surface of the
FIGS. 4 to 10 are plan views illustrating embodiments of a structure in which light sources are arranged. FIG.
Referring to FIG. 4, the light source unit includes a plurality of
The first light source array X1 and the second light source array X2 which are adjacent to each other are electrically insulated from each other and can be individually driven. Also, the
The plurality of
The right and left positions of the light sources included in the first light source array X1 and the
The
Of course, unlike FIG. 4, the light sources included in the first and second light source arrays may be arranged corresponding to each other, though not shown in the drawings.
5, the light source unit includes light source arrays X1 to X4. Similar to FIG. 4, the
Referring to FIG. 6, the light source unit may include one light source array X1. In this case, the light source array X1 may include a plurality of
5, the light source unit includes four light source arrays X1, X2, X3, and X4. The light source unit includes a first light source array X1 and a second light source array X2, The
7, the light source unit is composed of four light source arrays X1, X2, X3, and X4, and the light sources included in the first light source array X1 and the second light source array X2, And the
9, a light source unit in an amorphous substrate includes a first light source array X1 in which a plurality of
10, the light source unit is composed of the first and second light source arrays X1 and X2, and a plurality of light sources are arranged in a zigzag fashion at the upper and lower ends of the
As described above, the lighting apparatus according to the present invention can arrange the light sources in various shapes without any structural limitation, and by arranging various light sources utilizing the light flux and the light distribution of the light sources, it is possible to control the hot spot, Thereby maximizing the surface light emission quality.
Fig. 11 shows a
3 and 11, the
An air layer (first air gap) 280 may be further formed between the
Fig. 12 shows a
Referring to FIGS. 3, 11 and 12, the
Fig. 13 shows a
3 and 11 to 13, the
The
The first
The
The
For example, when the
The
At this time, the
The
Although not shown in the drawings, it is described above that at least one optical sheet may be additionally formed on the optical pattern layer A as necessary.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Those skilled in the art will appreciate that many suitable modifications and variations are possible in light of the present invention. Accordingly, all such modifications and variations as fall within the scope of the present invention should be considered.
110: printed circuit board
120: reflective sheet
121: reflection pattern
130: Light source
150: Resin layer
151: Bead
170: first optical sheet
180: Adhesive layer
181: second air gap
183: Optical pattern
190: second optical sheet
280: first air gap
290: diffusion plate
Claims (18)
A light source unit formed on the printed circuit board;
A resin layer formed on the printed circuit board and embedding the light source unit;
And a reflective sheet formed between the printed circuit board and the resin layer and having a structure penetrated by the light source unit,
Wherein the light source unit includes at least one light source array in which a plurality of light sources are disposed.
The light source array includes:
Wherein a plurality of light sources are arranged in a line at predetermined intervals.
The light source unit includes:
Wherein the first light source array and the second light source array are electrically insulated and driven independently.
Wherein an interval between the first light source array and the second light source array is 10 to 30 mm.
Wherein an interval between the light sources included in the first light source array and an interval between the light sources included in the second light source array is 12 to 30 mm.
Wherein the light sources included in the first light source array and the light sources included in the second light source array are arranged in a zigzag manner.
Wherein the light sources included in the first light source array and the light sources included in the second light source array are disposed in a one-to-one correspondence with each other.
Wherein the light sources included in the first and second light source arrays are individually driven.
Wherein one of the first light source array and the second light source array comprises:
Wherein a plurality of light sources are irregularly arranged.
Wherein the light sources included in the first light source array and the light sources included in the second light source array are different from each other in the light output direction.
Wherein the light flux of the light sources included in the first light source array is different from the light flux of the light sources included in the second light source array.
The light source includes:
A lighting device comprising a side view type light emitting diode.
And a reflection pattern is formed on the reflection sheet.
And a diffusion plate is formed on the resin layer.
And an air gap is formed between the resin layer and the diffusion plate.
And an optical sheet formed between the resin layer and the diffusion plate to disperse the light emitted therefrom.
Wherein the resin layer comprises:
And further comprising a bead made of any one selected from the group consisting of silicon, silica, glass bubble, PMMA, urethane, Zn, Zr, Al 2 O 3 , .
Wherein the printed circuit board includes:
A lighting device comprising a flexible printed circuit board.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020120125925A KR102041386B1 (en) | 2012-11-08 | 2012-11-08 | Illuminating device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020120125925A KR102041386B1 (en) | 2012-11-08 | 2012-11-08 | Illuminating device |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020190137492A Division KR102160766B1 (en) | 2019-10-31 | 2019-10-31 | Illuminating device |
Publications (2)
Publication Number | Publication Date |
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KR20140059447A true KR20140059447A (en) | 2014-05-16 |
KR102041386B1 KR102041386B1 (en) | 2019-11-07 |
Family
ID=50889257
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020120125925A KR102041386B1 (en) | 2012-11-08 | 2012-11-08 | Illuminating device |
Country Status (1)
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KR (1) | KR102041386B1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100781479B1 (en) * | 2005-03-29 | 2007-12-03 | 샤프 가부시키가이샤 | Surface illuminator and liquid crystal display having the same |
KR20090071912A (en) * | 2007-12-28 | 2009-07-02 | 엘지디스플레이 주식회사 | Back light unit and liquid crystal display device using the same |
KR20120009209A (en) | 2010-07-23 | 2012-02-01 | 희성전자 주식회사 | Edge type Backlight unit |
KR101168404B1 (en) * | 2010-07-02 | 2012-07-25 | 엘지이노텍 주식회사 | Back light umit within resin layer for light-guide and LCD using the same |
-
2012
- 2012-11-08 KR KR1020120125925A patent/KR102041386B1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100781479B1 (en) * | 2005-03-29 | 2007-12-03 | 샤프 가부시키가이샤 | Surface illuminator and liquid crystal display having the same |
KR20090071912A (en) * | 2007-12-28 | 2009-07-02 | 엘지디스플레이 주식회사 | Back light unit and liquid crystal display device using the same |
KR101168404B1 (en) * | 2010-07-02 | 2012-07-25 | 엘지이노텍 주식회사 | Back light umit within resin layer for light-guide and LCD using the same |
KR20120009209A (en) | 2010-07-23 | 2012-02-01 | 희성전자 주식회사 | Edge type Backlight unit |
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Publication number | Publication date |
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KR102041386B1 (en) | 2019-11-07 |
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