KR101776004B1 - Lighting apparatus using light guide plate devided into direct lighting portion and indirect lighting portion - Google Patents

Lighting apparatus using light guide plate devided into direct lighting portion and indirect lighting portion Download PDF

Info

Publication number
KR101776004B1
KR101776004B1 KR1020150055493A KR20150055493A KR101776004B1 KR 101776004 B1 KR101776004 B1 KR 101776004B1 KR 1020150055493 A KR1020150055493 A KR 1020150055493A KR 20150055493 A KR20150055493 A KR 20150055493A KR 101776004 B1 KR101776004 B1 KR 101776004B1
Authority
KR
South Korea
Prior art keywords
guide plate
light
light guide
indirect
direct
Prior art date
Application number
KR1020150055493A
Other languages
Korean (ko)
Other versions
KR20160059399A (en
Inventor
이애정
배혜진
Original Assignee
플러스웰주식회사
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 플러스웰주식회사 filed Critical 플러스웰주식회사
Publication of KR20160059399A publication Critical patent/KR20160059399A/en
Application granted granted Critical
Publication of KR101776004B1 publication Critical patent/KR101776004B1/en

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • F21S2/005—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction of modular construction
    • 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
    • F21V1/00—Shades for light sources, i.e. lampshades for table, floor, wall or ceiling lamps
    • F21V1/02—Frames
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/12—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by screwing
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0031—Reflecting element, sheet or layer

Abstract

The present invention relates to a light guide plate illuminator which is divided into a direct illumination section and an indirect illumination section, more specifically, a light guide plate is divided into a plurality of sections so that a part of the light guide plate functions as an illuminating device, To a direct lighting unit and indirect lighting unit that are capable of serving as a decorative unit for enhancing indirect lighting function with low illuminance and aesthetic appearance of the lighting apparatus.
The present invention relates to a lighting device using a light guide plate, in which a light reflection part is formed on a rear part or a front part, a direct illumination part having a reflection sheet on a rear part of the light reflection part, and a color printing layer, A light guide plate separated from the light guide plate by an indirect lighting unit having a decorative part formed of one of paper or paper; And a light source that emits light into the light guide plate.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a light guide plate illumination apparatus, which is divided into a direct illumination section and an indirect illumination section,

The present invention relates to a light guide plate illuminator which is divided into a direct illumination section and an indirect illumination section, more specifically, a light guide plate is divided into a plurality of sections so that a part of the light guide plate functions as an illuminating device, To a direct lighting unit and indirect lighting unit that are capable of serving as a decorative unit for enhancing indirect lighting function with low illuminance and aesthetic appearance of the lighting apparatus.

Generally, an illumination device using a light guide plate projects light onto a light guide plate made of a plate-like transparent plastic or an acrylic resin material through a light source such as a cold cathode ray tube (CCFL) or a light emitting diode (LED) And advertising panels.

As shown in FIG. 1, a conventional lighting device using a light guide plate includes a light guide plate 10 having light reflection parts 30 and 40 for reflecting light toward the front side on a rear surface of a light guide plate, A light source unit 20 for generating light toward the side surfaces of the light guide plate 10 or the light guide plate 10 and light reflection parts 30 and 40 formed on the rear surface of the light guide plate 10, And a light diffusion sheet 50 for covering the exposure, and is used as an illumination device.

However, in the above-mentioned conventional art, since a single light guide plate is used only for illumination, no decorative part is formed and various decorating effects can not be given, which is disadvantageous in that only a simple lighting device can be realized.

In addition, since the front surface of the light guide plate is directly used as a direct illumination portion, the light reflector patterns are formed on the rear surface of the light guide plate in an intermittent manner in order to match the illuminance uniformity of the light generated on the front surface of the light guide plate, In addition, since the light diffusion sheet for covering the pattern of the light reflection part is disposed on the front surface of the light guide plate, the overall illuminance of the lighting device is lowered.

That is, the light emitted to the front surface of the light guide plate is transmitted through the light diffusion sheet, causing light loss, resulting in a decrease in light efficiency, an increase in the cost of installing the light diffusion sheet, There is a problem of inefficiency.

2, the main technical structure of the light guide plate illuminating device is a rear light guide plate (light guide plate) having a light reflecting portion 30 for reflecting light, A front light guide plate 10b coupled to a front surface of the rear light guide plate 10a and a light source unit 20 for generating light toward a side surface of the light reflection unit 30 or the rear light guide plate 10a, The front light guide plate 10b includes a transparent portion 12 through which light is transmitted and a decorative portion 14 through which a color printing layer is formed. The transparent portion 12 formed on the front light guide plate 10b includes a rear surface And is formed at a position corresponding to the light reflection part 30 formed on the light guide plate.

That is, although the conventional art includes a decorative part on the front light guide plate, the problem of the related art is partially solved. However, in order to inject light into the decorative part formed on the front light guide plate, a separate light source must be provided on the front light guide plate.

In addition, since the illumination device has a dual structure of a front light guide plate and a rear light guide plate, the manufacturing cost of the lighting device is increased and the overall weight of the lighting device is increased.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a lighting apparatus and an indirect lighting unit in which a single light guide plate is divided into a direct lighting unit and an indirect lighting unit, And a light guide plate illumination device divided into a direct illumination section and an indirect illumination section to enable various decorations to be implemented in the apparatus.

In addition, the present invention provides a light guide panel lighting apparatus divided into a direct illumination unit and an indirect illumination unit, which can simultaneously obtain a lighting effect and a decorative effect with only one light guide plate and improve the light efficiency while reducing the overall weight, .

According to an aspect of the present invention,

A lighting apparatus using a light guide plate, comprising: a direct lighting unit having a light reflecting unit formed on a rear surface or a front surface thereof and a reflection sheet attached to a rear surface of the light reflecting unit; a color printing layer, a color sheet, A light guide plate separated from the indirect lighting unit with a decorative unit; And a light source that emits light into the light guide plate.

In this case, the light source is installed on the side of the direct illumination unit.

And a heat radiating frame attached to the light source to protect the light source and dissipate heat generated from the light source.

A light diffusion sheet is disposed on the front surface of the direct lighting part of the light guide plate to hide the pattern of the light reflection part.

At this time, a fixing frame for fixing the light diffusion sheet is installed on the entire front surface of the boundary between the direct illumination unit and the indirect illumination unit.

Further, the fixed frame is made of a transparent plastic material.

A bolt fastening tab may be formed on the rear surface of the fixed frame, a nut may be inserted, and a through hole may be formed in the light guide plate to receive a bolt for fixing the fastening frame.

The fastening protrusion is integrally formed on the rear surface of the fixed frame, and the light guide plate is formed with a through hole through which the fastening protrusion passes, and the fastening protrusion is directly fastened to the rear surface of the light guide plate by the nut .

The light reflection part may be formed in any one of a printed layer, a groove, and a protrusion.

In addition, an installation groove is formed in a rear surface portion of the light guide plate positioned between the direct illumination unit and the indirect illumination unit, and the light source is inserted into the installation groove with the direct illumination unit facing the installation groove.

According to the present invention, a direct lighting unit and an indirect lighting unit can be simultaneously implemented in one light guide plate, so that a variety of ornaments can be implemented in a lighting apparatus without lowering the brightness of illumination, which is an original function of the lighting apparatus, And has an excellent effect of enabling simultaneous expression.

Further, according to the present invention, it is possible to obtain a lighting effect and a decorative effect simultaneously by using only one light guide plate. Therefore, the light diffusion sheet is excellent in economical efficiency, and the light diffusion sheet is not attached to the front surface of the light guide plate, So that the weight of the entire lighting apparatus can be further reduced.

According to the present invention, since the front surface of the light guide plate is divided into the direct illumination portion and the indirect illumination portion, the area of the direct illumination portion is reduced as compared with the conventional illumination device having the same size, It is possible to prevent the aesthetic appearance from being degraded due to the exposure of the light reflection portion. Accordingly, there is no need to provide a light diffusion sheet for lowering the illuminance of the illumination device, thereby further improving the light efficiency.

1 is a side view showing a conventional lighting apparatus using a light guide plate.
2 is a side view showing another embodiment of a lighting apparatus using a conventional light guide plate.
FIG. 3 is a perspective view schematically showing a light guide panel lighting apparatus divided into a direct lighting unit and an indirect lighting unit according to the present invention. FIG.
Figures 4 (a), 4 (b) and 7 (a) and 7 (b) are side cross-sectional views and plan views schematically illustrating various embodiments of a light guide plate illumination device divided into direct illumination and indirect illumination according to the present invention.
8 and 9 are partial cross-sectional views showing still another embodiment of a light guide plate illumination device divided into a direct illumination part and an indirect illumination part according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a light guide panel lighting apparatus divided into a direct lighting unit and an indirect lighting unit according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 is a perspective view schematically showing a light guide plate lighting apparatus divided into a direct lighting unit and an indirect lighting unit according to the present invention, and FIGS. 4 (a), 4 (b) FIGS. 8 and 9 are a side view and a plan view, respectively, schematically showing various embodiments of a light guide panel lighting apparatus divided into a direct lighting unit and an indirect lighting unit according to an embodiment of the present invention. Fig.

In the present invention, one light guide plate is divided into a plurality of sections, and some of the sections function as an illuminating device for lighting, and the remaining sections serve as indirect lighting functions of a lower illuminance and a decorative section The light guide plate illumination device 100 includes a light guide plate 110 and a light source 122, as shown in FIG. 3. The light guide plate illumination device 100 is divided into a direct illumination unit and an indirect illumination unit.

More specifically, the light guide plate 110 is made of a translucent plastic or an acrylic resin having a high light transmittance while being easy to process, and plays a role of uniformly transmitting light generated from the light source 122 A direct illumination unit 110a that emits bright light through the front surface and serves as an illumination unit and an indirect illumination unit 110b that emits a soft light through the front surface and can display various colors and images, .

That is, the light guide plate 110 is divided into a direct illumination unit 110a and an indirect illumination unit 110b due to a difference in the arrangement of the light source unit 122 and the arrangement of the light source unit 122, A light reflecting portion 112 having a predetermined pattern is formed on the rear or front portion of the light guide plate 110. A reflective sheet 114 is attached to the rear portion of the light reflecting portion 112. [

The light reflecting unit 112 reflects the light generated from the light source 122 to be described later or forward or backward. The light reflecting unit 112 may include a printed layer or a light guide plate 110 Like recesses or protrusions formed on the rear surface of the base plate.

Here, the light reflector 112 may have a different size or shape in consideration of a distance from the light source 122 to be described later.

The reflective sheet 114 is attached to the rear surface or the front surface of the light guide plate 110 on which the light reflector 112 is formed to enhance the reflection efficiency of light reflected forward or backward along with the light reflector 112 It can play a role of bright and beautiful lighting effect.

The decorative portion 116 is formed on the rear or front portion of the light guide plate 110 corresponding to the indirect illumination portion 110b to enhance the appearance of the illumination device 100. The decorative portion 116 includes a light guide plate Decorative members such as a color sheet, a paper, and a cloth attached to the back surface or the backside of the light guide plate 110 may be used.

That is, a portion of the light guide plate 110 where the light reflection portion 112 and the reflection sheet 114 are provided is a direct illumination portion 110a at the rear or front portion, and the decoration portion 116 is provided at the rear or front portion The indirect lighting unit 110b is configured so that the lighting function and the decorative function can be simultaneously expressed by using the single light guide plate 110. [

3 to 7, the direct illumination unit 110a and the indirect illumination unit 110b formed on the light guide plate 110 may be formed in accordance with positions of the light reflection unit 112 and the decoration unit 116, The light guide plate 110 may be formed in various shapes and a plurality of direct illumination units 110a and indirect illumination units 110b may be formed in one light guide plate 110. [

The light source 122 is disposed on the light guide plate 110 to generate light toward the inside of the light guide plate 110. The light source 122 emits light toward the inside of the light guide plate 110, A cathode ray tube (CCFL), a light emitting diode (LED), or the like.

Here, the light source 122 may be used alone, or a heat radiating frame 124 may be attached to form one light source 120. The heat radiating frame 124 protects the light source 122, And dissipates heat generated from the heater 122.

The light source unit 120 in which the light source 122 or the light source 122 and the heat dissipating frame 124 are coupled is installed on the side of the direct illumination unit 110a and is disposed inside the light guide plate 110, The direct illumination unit 110a and the indirect illumination unit 110b can be more clearly distinguished from each other by generating light toward the light reflection unit 112 provided on the rear surface or the front surface of the illumination unit 110a.

More specifically, when the light source 122 or the light source unit 120 is installed on the side surface of the indirect illumination unit 110b, the light source 122 is illuminated by the ornamental unit 116 provided on the rear surface or the front surface of the light guide plate 110, The light emitted from the direct illumination unit 110a is absorbed and the illuminance of the light reflected forward or backward through the direct illumination unit 110a is reduced. On the other hand, as shown in FIGS. 3 to 6, Most of the light generated from the light source 122 is reflected to the front or rear surface of the light guide plate 110 by the light reflection part 112 and the reflection sheet 114 to be used as illumination when the light source part 120 or the light source part 120 is installed And the remaining light enters the indirect illumination unit 110b and illuminates the ornamental unit 116 so that various colors and shapes can be expressed.

The light diffusing sheet 130 may be attached to the front surface of the direct lighting portion 110a of the light guide plate 110. The light diffusion sheet 130 may be disposed on the rear surface of the direct lighting portion 110a of the light guide plate 110, Shielding the reflection portion 112 from being exposed to the front surface and diffusing the light evenly.

That is, if the area corresponding to the direct illumination portion 110a is narrower than the area of the entire light guide plate 110 to form the light reflection portion 112 closely, even if the light reflection portion 112 is exposed to the front surface of the light guide plate 110, It is unnecessary to install the additional light diffusion sheet 130. However, when the area corresponding to the direct illumination portion 110a is wide, the direct illumination portion 110a As shown in FIG. 7, since the light reflection part 112 of a predetermined pattern is formed more and more densely in order to match the brightness uniformity, the light reflection part 112 of a predetermined pattern is concentrated at the center part, The light diffusing sheet 130 may be provided on the entire surface of the direct lighting unit 110a so that the light reflecting unit 112 may be disposed on the light guide plate 110. [ 110 < / RTI > .

In this case, a fixing frame 140 for fixing the light diffusion sheet 130 is installed on the front surface of the direct illumination unit 110a. The fixing frame 140 is disposed between the direct illumination unit 110a and the indirect illumination unit 110b The illumination function of the direct illumination unit 110a and the decoration function of the indirect illumination unit 110b are not degraded by the fixing frame 140 provided at the boundary and the distinction between the direct illumination unit 110a and the indirect illumination unit 110b So that it can be more clearly made.

In this case, the fixing frame 140 may be formed of a light transmitting plastic material of various colors. In this case, the fixing frame 140 may be formed of a light source 122 and disposed on the light guide plate 110 The fixed frame 140 is irradiated with light reflected by the front surface of the fixed frame 140 so that the lighting device 100 having improved lighting function and decorating function can be realized.

The fixing frame 140 may be fixed to the front surface of the light guide plate 110 by means of fastening means such as a bolt 160. The light guide plate 110 may have through holes 118 in which bolts 160 are inserted Is formed.

At this time, a tab or nut 150 for fastening the bolt 160 is inserted into a portion of the rear surface of the fixed frame 140, that is, a portion of the fixed frame 140 that contacts the light guide plate 110, The bolts 160 and the tabs or nuts 150 for fixing the fixing frame 140 to the light guide plate 110 are not exposed to the front surface of the light guide plate 110. [

Here, the tab or nut 150 may be integrally formed on the rear surface of the fixed frame 140.

As another example of fixing the fixing frame 140 to the front surface of the light guide plate 110, the fixing protrusion 144 may be integrally formed on the rear surface of the fixing frame 140. In this case, The light guide plate 140 and the light guide plate 110 can be more easily combined.

9, a fastening protrusion 144 is integrally formed on the rear surface of the stationary frame 140 and a through hole 118 through which the fastening protrusion 144 passes is formed in the light guide plate 110 And the fastening projecting portion 144 is fastened through the through hole 118 formed in the light guide plate 110 by being passed through the light guide plate 110 and directly fastened to the rear portion of the light guide plate 110 by the nut 150. [ The fixing frame 140 may be fixed to the light guide plate 110 only by fastening the nut 150 to the fastening protrusion 144 at the rear portion of the light guide plate 110 in a state in which the fastening protrusion 144 integrally formed in the frame 140 is inserted into the fastening protrusion 144, (Not shown).

7 (a) and 7 (b), the direct illumination unit 110a is provided on the light guide plate (light guide plate) 110a and the light guide plate The indirect illumination unit 110b may be formed at the edge of the light guide plate 110. In this case, the rear illumination unit 110a and the indirect illumination unit 110b A light source 122 is installed in the rear surface of the light guide plate 110 at a boundary between the light guide plate 110 and the light guide plate 110, And is inserted into the installation groove 115.

The light generated from the light source 122 installed in the installation groove 115 is reflected by the light reflection part 112 provided on the rear surface or the front surface of the direct illumination part 110a and the reflection A part of the light is irradiated to the indirect lighting unit 110b through the space formed in front of the installation groove 115 and is received by the decorating unit 116, Can be expressed.

8, the heat dissipating frame 124 attached to the light source 122 installed in the installation groove 115 is fixed to the light guide plate 110 by the bolts 160 for fixing the fixing frame 140, As shown in FIG.

The light diffusion sheet 130 installed on the front surface of the direct illumination unit 110a and the fixing frame 140 for fixing the light diffusion sheet 130 are the same as those of the previous embodiment, and thus a detailed description thereof will be omitted.

According to the light guide plate illumination apparatus 100 divided into the direct illumination unit and indirect illumination unit according to the present invention as described above, it is possible to simultaneously implement the direct illumination unit 110a and the indirect illumination unit 110b in one light guide plate 110 It is possible to realize various decorations in the illumination apparatus 100 without lowering the brightness of the illumination, which is the original function of the illumination apparatus 100, so that the illumination function as well as the decoration function can be simultaneously developed. Since the light source 122 is installed only in the portion used as the direct illumination unit 110a, the weight of the entire illumination device 100 can be reduced, Since the area of the direct illumination unit 110a is reduced as compared with a conventional illumination apparatus having the same size, the front surface of the direct illumination unit 110a is divided into the direct illumination unit 110a and the indirect illumination unit 110b, It is possible to form the pattern of the light reflection part 112 more closely on the rear face or the front face of the light emitting device 110 and to prevent the appearance of the light reflection part due to exposure of the light reflection part from being deteriorated, It is not necessary to provide a light diffusing sheet for lowering the luminous efficiency and the light efficiency can be improved.

Although the preferred embodiments of the present invention have been described for illustrative purposes, those skilled in the art will readily appreciate that many modifications are possible in the exemplary embodiments without materially departing from the novel teachings and advantages of this invention.

The present invention relates to a light guide plate illuminator which is divided into a direct illumination section and an indirect illumination section, more specifically, a light guide plate is divided into a plurality of sections so that a part of the light guide plate functions as an illuminating device, To a direct lighting unit and indirect lighting unit that are capable of serving as a decorative unit for enhancing indirect lighting function with low illuminance and aesthetic appearance of the lighting apparatus.

100: illumination device 110: light guide plate
110a: Direct illumination unit 110b: Indirect illumination unit
112: light reflection part 114: reflection sheet
115: installation groove 116: decorative part
118: through hole 120: light source part
122: light source 124: heat radiation frame
130: light diffusion sheet 140: fixed frame
142: insertion groove 144: fastening protrusion
150: tab (nut) 160: bolt

Claims (10)

A lighting device using a light guide plate and a light source including a light source for emitting light to the inside of the light guide plate,
The light-
And a reflective sheet attached to a rear portion of the light reflection portion to emit a bright light through the front surface of the light reflection portion,
A decorative part made of one of a color printing layer, a color sheet, cloth, or paper is attached to the rear surface or the front surface so as to emit a soft light through the front surface and at least one indirect lighting part for displaying various colors or images A light guide plate divided into a direct illumination section and an indirect illumination section.
The method according to claim 1,
Wherein the light source is disposed on a side surface of the direct illumination unit, and the indirect illumination unit is divided into the direct illumination unit and the indirect illumination unit.
The method according to claim 1,
And a heat dissipating frame attached to the light source to protect the light source and dissipate heat generated from the light source, wherein the direct lighting unit and the indirect lighting unit are divided.
The method according to claim 1,
Wherein a light diffusion sheet is attached to a front surface of the direct light portion of the light guide plate so as to hide a pattern of the light reflection portion, and the light guide plate is divided into a direct illumination portion and an indirect illumination portion.
5. The method of claim 4,
And a fixing frame for fixing the light diffusion sheet is provided on the front surface of the boundary between the direct lighting unit and the indirect lighting unit.
delete 6. The method of claim 5,
Wherein a bolt fastening tab is formed on a rear surface of the fixed frame or a nut is inserted and a through hole is formed in the light guide plate to receive a bolt for fastening the fastening frame by being fastened to a tab or a nut. A light guide panel lighting device divided into indirect lighting parts.
6. The method of claim 5,
Wherein a fastening protrusion is integrally formed on a rear surface of the fixed frame and a through hole is formed in the light guide plate so that the fastening protrusion is passed therethrough so that the fastening protrusion is directly fastened to the rear surface of the light guide plate by a nut. And indirect lighting unit.
delete The method according to any one of claims 1, 3, 4, 5, 7, and 8,
Wherein the light guide plate is installed in a rear portion of the light guide plate between the direct illumination unit and the indirect illumination unit and the light source is inserted into the installation groove so as to face the direct illumination unit, Lighting device.


KR1020150055493A 2014-11-17 2015-04-20 Lighting apparatus using light guide plate devided into direct lighting portion and indirect lighting portion KR101776004B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020140159873 2014-11-17
KR20140159873 2014-11-17

Publications (2)

Publication Number Publication Date
KR20160059399A KR20160059399A (en) 2016-05-26
KR101776004B1 true KR101776004B1 (en) 2017-09-11

Family

ID=56104767

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150055493A KR101776004B1 (en) 2014-11-17 2015-04-20 Lighting apparatus using light guide plate devided into direct lighting portion and indirect lighting portion

Country Status (1)

Country Link
KR (1) KR101776004B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102548421B1 (en) 2022-12-08 2023-06-28 주식회사 케이비텍 Led lighting device having current regulator using converter output current

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102483936B1 (en) * 2022-03-28 2023-01-04 주식회사 호운 Lighting system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101152341B1 (en) * 2011-04-15 2012-06-29 주식회사 엘이디플러스 Lighting device with decorations

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101152341B1 (en) * 2011-04-15 2012-06-29 주식회사 엘이디플러스 Lighting device with decorations

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102548421B1 (en) 2022-12-08 2023-06-28 주식회사 케이비텍 Led lighting device having current regulator using converter output current

Also Published As

Publication number Publication date
KR20160059399A (en) 2016-05-26

Similar Documents

Publication Publication Date Title
KR100882801B1 (en) Light guide plate lighting apparatus
KR102036223B1 (en) Light assembly to illuminate the emblem
JP2015008081A (en) Led light source unit with light guide body and lighting apparatus with light guide body
KR101776004B1 (en) Lighting apparatus using light guide plate devided into direct lighting portion and indirect lighting portion
JP2009080993A (en) Surface light emitting device
KR100937773B1 (en) Light guide plate lighting apparatus
KR101826066B1 (en) Image panel for a ceiling light
JP2008256920A (en) Illumination cut character for signboard
KR101026881B1 (en) Advertisement panel with an advertising portion printed by an ink sensitive to light
KR20120118534A (en) Light emitting signboard apparatus having side lighting surfaces
JP4917638B2 (en) Edge light panel
KR101000452B1 (en) Apparatus for lighting using the light guide plate
KR200454644Y1 (en) Curved channel signage
KR20090095366A (en) Surface light emitting device
KR20070051079A (en) Advertisement board for scratch
JP4915672B2 (en) Surface light emitting device fixing structure
KR200444447Y1 (en) Double Side Back Light Unit for Logo Sign Board pannel
KR101809668B1 (en) Utility lighting device
JP3148425U (en) vending machine
KR101660010B1 (en) Lighting apparatus using light guide plates
KR20170001886U (en) Channel apparatus for outdoor advertising
JP2003245392A (en) Illuminator
KR101002401B1 (en) Lighting decoration plate with a luminous diffusion function
KR101032470B1 (en) Modularized light guide plate lighting apparatus
KR102235879B1 (en) Luminescence channel of plane type for advertising

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant