KR20090024014A - Light guide plate lighting apparatus - Google Patents

Light guide plate lighting apparatus Download PDF

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Publication number
KR20090024014A
KR20090024014A KR1020070089187A KR20070089187A KR20090024014A KR 20090024014 A KR20090024014 A KR 20090024014A KR 1020070089187 A KR1020070089187 A KR 1020070089187A KR 20070089187 A KR20070089187 A KR 20070089187A KR 20090024014 A KR20090024014 A KR 20090024014A
Authority
KR
South Korea
Prior art keywords
light
guide plate
light guide
light source
reflecting
Prior art date
Application number
KR1020070089187A
Other languages
Korean (ko)
Inventor
박휴완
Original Assignee
박휴완
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 박휴완 filed Critical 박휴완
Priority to KR1020070089187A priority Critical patent/KR20090024014A/en
Publication of KR20090024014A publication Critical patent/KR20090024014A/en

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Classifications

    • 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
    • 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
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0016—Grooves, prisms, gratings, scattering particles or rough surfaces
    • 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055—Reflecting element, sheet or layer
    • 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
    • G02B6/006—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to produce indicia, symbols, texts or the like
    • 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
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0093—Means for protecting the light guide
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
    • 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
    • F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
    • F21V2200/20—Use of light guides, e.g. fibre optic devices, in lighting devices or systems of light guides of a generally planar shape

Abstract

The present invention relates to a light guide plate illumination device for projecting the light emitted from the light source through the light guide plate to enable illumination and advertising functions, and more particularly, to provide a light reflecting unit having a high light reflectance in the light emitting part that enters light into the light guide plate. The present invention relates to a light guide plate illumination device capable of increasing light emission efficiency of light projected through the light guide plate.

To this end, the light guide plate lighting apparatus according to the present invention includes a plate-shaped light guide plate having a light reflection groove formed at a rear side thereof so that the incident light is reflected and projected to the front side, and a light source incident to the light guide plate to emit light to the light guide plate. It includes a light emitting unit having a reflector for reflecting, wherein the reflector is any one of a mirror attached to one side of the substrate on which the light source is installed or a mirror formed on one side of the substrate, a reflective film, reflective paint and silver coating It features.

Description

Light guide plate lighting apparatus

1 is a cross-sectional view illustrating a light guide plate lighting apparatus according to the prior art.

2 is an exploded perspective view for explaining a light guide plate lighting apparatus according to an embodiment of the present invention.

3 is a cross-sectional view illustrating a light guide plate lighting apparatus according to an embodiment of the present invention.

4 is a configuration diagram illustrating a reflector of a light guide plate lighting apparatus according to an embodiment of the present invention.

5 is a plan view illustrating a light guide plate lighting apparatus according to another embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

210: Light guide plate 211: light reflecting groove

212: insertion groove 220: reflector

231a, 231b: substrate 232a, 232b: light source

233a and 233b: light source module 234: protective cover

235: reflector

The present invention relates to a light guide plate lighting apparatus for projecting the light emitted from the light source through the light guide plate to enable illumination and advertising functions, and in particular, by installing a reflector having a high light reflectance on the light emitting part that enters light into the light guide plate. The present invention relates to a light guide plate lighting apparatus capable of increasing luminous efficiency of light projected through the light guide plate.

In general, a lighting apparatus using a light guide plate is a light source such as a cold cathode lamp (CCFL), a light emitting diode (LED), etc. to project the light to the light guide plate made of a plate-shaped transparent plastic or acrylic resin, such as indoor lighting, interior, And as advertising panels.

For example, as shown in FIG. 1, in the light guide plate illumination device 100, a light source 131, such as CCFL or LED, fixed on the substrate 132 is installed on the light guide plate 110 side by a protective cover 133. The rear surface of the light guide plate 110 is formed with a plurality of light reflecting grooves 111 along a predetermined shape, and at the same time the reflecting plate 120 on the rear side of the light guide plate 110 on which the light reflecting grooves 111 are formed. ) Consists of a structure installed.

Therefore, when the light source 131 starts to emit light by the power supplied from the outside, the light emitted into the light guide plate 110 is reflected by the light reflecting groove 111 and is projected to the front surface of the light guide plate 110. Various patterns, characters, and shapes can be expressed, and the projected light can be used to function as indoor lighting, interiors, and advertising panels.

However, according to the light guide plate lighting apparatus 100 as described above, there is a problem that the radiation efficiency of light projected through the front surface of the light guide plate is lower than the power consumed by the light source due to the large loss of light incident on the light guide plate through the light source. . That is, a considerable amount of light incident through the light source installed on one side of the light guide plate is not projected through the front surface of the light guide plate, but is absorbed by the substrate installed on the other side of the light guide plate or scattered by the substrate, thereby degrading light emission efficiency.

Thus, in the present invention to solve the problems as described above, the light emitted from the light source through the light guide plate to enable the illumination and advertising functions, but the light reflecting portion having a high light reflectance on the light emitting part incident light to the light guide plate According to the installation to provide a light guide plate lighting device that can increase the luminous efficiency of light projected through the light guide plate.

To this end, the light guide plate lighting apparatus according to the present invention includes a plate-shaped light guide plate having a light reflection groove formed at a rear side thereof so that incident light is reflected and projected to the front side, and a light source emitting light to the light guide plate, And a light emitting unit having a reflecting unit for reflecting light.

In this case, the light emitting unit includes a light source module having a light source installed on a substrate and a protective cover for protecting the light source module from an external environment, and the reflecting unit is preferably formed on one side of the substrate.

In addition, the reflector is preferably any one of a mirror, a reflective film, a reflective paint, and a silver coating formed on one side of the substrate.

In addition, an insertion groove is formed at one side of the light guide plate, and the light emitting part is preferably inserted into the insertion groove.

In addition, it is preferable to further include a reflecting plate coupled to the rear side of the light guide plate to reflect the light emitted from the light emitting portion to the front side.

Hereinafter, a light guide plate lighting apparatus according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is an exploded perspective view for explaining a light guide plate lighting apparatus according to an embodiment of the present invention, Figure 3 is a cross-sectional view for explaining a light guide plate lighting apparatus according to an embodiment of the present invention, Figure 4 is one of the present invention 5 is a block diagram illustrating a reflecting unit of the light guide plate lighting apparatus according to the embodiment, and FIG. 5 is a plan view illustrating the light guide plate lighting apparatus according to another embodiment of the present invention.

As illustrated in FIGS. 2 and 3, the light guide plate lighting apparatus 200 according to the present invention includes a light guide plate 210 having a light reflecting groove 211 formed at a rear side thereof, and light incident on the light guide plate 210. A light emitting unit including light sources 232a and 232b, and a reflecting plate 220 coupled in parallel with the light guide plate 210 at the rear side of the light guide plate 210 to emit light from the light sources 232a and 232b. When the incident light is incident on the light guide plate 210, the incident light is reflected by the light reflecting groove 211 formed at the rear of the light guide plate 210 and then is projected through the front surface of the light guide plate 210. Make it available as an advertising panel.

In more detail, the plate-shaped light guide plate 210 is made of a light-transmitting plastic or acrylic resin, which is easy to process and has a high light transmittance, but has a light reflecting groove along the shape of various characters, symbols, or figures on the rear side. (211) is formed.

The light emitting unit is configured to allow light to enter the light guide plate 210, and is provided on both sides of the light guide plate 210, and is provided on a cold cathode ray lamp on the substrates 231 a and 231 b in which an electric circuit of a predetermined pattern is formed. As well as protecting the light source modules 233a and 233b and the light source modules 233a and 233b, which are provided with light sources 232a and 232b such as a CCFL and a light emitting diode (LED), as well as the light source modules 233a, Including a protective cover 234 for firmly fixing the 233b to one side of the light guide plate 210, the light incident from the light sources 232a and 232b is reflected on the rear surface of the light guide plate 210. Reflected by the groove 211 is to be projected through the front of the light guide plate (210).

In this case, as shown in FIG. 4A on one side of the substrates 231a and 231b on which the light sources 232a and 232b are installed, the reflector is a mirror, a reflective film, It is preferable that a reflecting unit 235 is provided to increase the light reflectance by attaching or applying one of the reflective paint and the silver coating.

Therefore, as shown in FIG. 4B, when the light emitted from the light source 232a installed on one side reaches the substrate 231b provided on the other side, the reflected light may be reflected by the reflector 235. At the same time, when the light emitted from the light source 232b installed on the other side reaches the substrate 231a installed on the one side, the reflected light can be reflected by the reflector 235 so that the front surface of the light guide plate 210 can be reflected. It is possible to increase the light emission efficiency through.

In addition, the reflector plate 220 is configured to further increase the lighting efficiency by allowing the light incident from the light sources 232a and 232b to be projected only to the front surface of the light guide plate 210. The reflective plate 220 is formed in parallel with the light guide plate 210 at the rear side of the light guide plate 210.

On the other hand, the reflector 235 as described above is an example of the substrates 231a and 231b of the light source modules 233a and 233b provided on the outer surface of the light guide plate 210 as illustrated in FIGS. 2 to 4. 5, the insertion groove 212 is formed at one side of the light guide plate 210, and the substrate 231a of the light source modules 233a and 233b is inserted into the insertion groove 212. 231b) will be apparent to those skilled in the art.

The light guide plate lighting apparatus according to the present invention has been described above. Such a technical configuration of the present invention will be understood by those skilled in the art that the present invention can be implemented in other specific forms without changing the technical spirit or essential features.

Therefore, the above-described embodiments are to be understood in all respects as illustrative and not restrictive, and the scope of the present invention is indicated by the appended claims rather than the foregoing description, and the meanings of the claims and All changes or modifications derived from the scope and equivalent concepts thereof should be construed as being included in the scope of the present invention.

According to the light guide plate lighting apparatus of the present invention as described above, the light emitted through the light guide plate to enable the illumination and advertising functions, it is easy to be fixed to the wall, such as to install a fixed frame to the light guide plate.

In addition, it is possible to install a light emitting part for injecting light into the light guide plate without harming its appearance.

Claims (5)

A plate-shaped light guide plate having a light reflection groove formed at a rear side thereof so that incident light can be reflected and projected to the front side; And And a light emitting part including a light source for emitting light to the light guide plate and a reflecting part for reflecting incident light. The method of claim 1, The light emitting unit includes a light source module provided with a light source on a substrate and a protective cover for protecting the light source module from an external environment, and the reflector is formed on one side of the substrate. The method of claim 2, The reflector is a light guide plate illumination device, characterized in that any one of a mirror, a reflective film, a reflective paint and a silver coating formed on one side of the substrate. The method of claim 3, wherein An insertion groove is formed at one side of the light guide plate, and the light guide part is inserted into the insertion groove. The method according to any one of claims 1 to 3, And a reflecting plate coupled to a rear side of the light guide plate to reflect light emitted from the light emitting unit to the front side.
KR1020070089187A 2007-09-03 2007-09-03 Light guide plate lighting apparatus KR20090024014A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020070089187A KR20090024014A (en) 2007-09-03 2007-09-03 Light guide plate lighting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070089187A KR20090024014A (en) 2007-09-03 2007-09-03 Light guide plate lighting apparatus

Publications (1)

Publication Number Publication Date
KR20090024014A true KR20090024014A (en) 2009-03-06

Family

ID=40693143

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020070089187A KR20090024014A (en) 2007-09-03 2007-09-03 Light guide plate lighting apparatus

Country Status (1)

Country Link
KR (1) KR20090024014A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010129815A2 (en) * 2009-05-06 2010-11-11 I2Ic Corporation Light guide with embedded light sources
KR101327137B1 (en) * 2011-11-22 2013-11-08 에스엘 주식회사 Multiple layer structure for shift display

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010129815A2 (en) * 2009-05-06 2010-11-11 I2Ic Corporation Light guide with embedded light sources
WO2010129815A3 (en) * 2009-05-06 2011-02-03 I2Ic Corporation Light guide with embedded light sources
CN102483215A (en) * 2009-05-06 2012-05-30 I2Ic公司 Light guide with embedded light sources
KR101327137B1 (en) * 2011-11-22 2013-11-08 에스엘 주식회사 Multiple layer structure for shift display

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A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application