KR20140078370A - Lamp unit and automobile lamp using the same - Google Patents

Lamp unit and automobile lamp using the same Download PDF

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Publication number
KR20140078370A
KR20140078370A KR1020120147656A KR20120147656A KR20140078370A KR 20140078370 A KR20140078370 A KR 20140078370A KR 1020120147656 A KR1020120147656 A KR 1020120147656A KR 20120147656 A KR20120147656 A KR 20120147656A KR 20140078370 A KR20140078370 A KR 20140078370A
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KR
South Korea
Prior art keywords
light
shielding
pattern
emitting module
optical
Prior art date
Application number
KR1020120147656A
Other languages
Korean (ko)
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KR102023536B1 (en
Inventor
김태경
정윤모
박상준
장재혁
Original Assignee
엘지이노텍 주식회사
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Application filed by 엘지이노텍 주식회사 filed Critical 엘지이노텍 주식회사
Priority to KR1020120147656A priority Critical patent/KR102023536B1/en
Priority to PCT/KR2013/008713 priority patent/WO2014051394A1/en
Priority to EP13840484.3A priority patent/EP2902694B1/en
Priority to US14/432,091 priority patent/US10030840B2/en
Priority to CN201380061622.9A priority patent/CN104813098B/en
Publication of KR20140078370A publication Critical patent/KR20140078370A/en
Application granted granted Critical
Publication of KR102023536B1 publication Critical patent/KR102023536B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/249—Light guides with two or more light sources being coupled into the light guide
    • 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
    • F21K9/61—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/239—Light guides characterised by the shape of the light guide plate-shaped
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/241—Light guides characterised by the shape of the light guide of complex shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/242—Light guides characterised by the emission area
    • F21S43/245—Light guides characterised by the emission area emitting light from one or more of its major surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors
    • 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
    • G02B6/0051—Diffusing 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
    • G02B6/005—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
    • G02B6/0053—Prismatic sheet or layer; Brightness enhancement 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
    • G02B6/005—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
    • G02B6/0066—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 characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • 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 planar lighting device with improved light collecting efficiency, comprising a planar light emitting module including a light guide member in which multiple light sources are buried and a light collecting member including a perforated optical pattern for collecting light emitted from the planar light emitting module.

Description

[0001] The present invention relates to a lamp unit and an automobile lamp using the same,

The present invention relates to a lighting device capable of enhancing the light condensing efficiency.

The lighting unit using various light sources used in electronic devices is implemented in such a way as to increase the light efficiency by using a suitable light source according to the characteristics of each electronic device.

BACKGROUND OF THE INVENTION [0002] Lighting units used in such electronic apparatuses are classified into backlight units applied to flat panel displays, interior lights used in indoor environments, headlights, fog lights, retracted lights, car lights, number lights, tail lights, An indicator lamp, an emergency flashing indicator, or an indoor lighting installed in a vehicle.

However, most of such illumination is mostly applied in terms of the luminance of the surface light source by applying a member such as a light guide plate for efficiently transmitting light that provides light.

For example, Fig. 1 schematically shows a structure of a lighting apparatus used in a conventional vehicle.

1, a conventional light guide for a vehicle includes a light source 10 having a light emission angle of a certain range and emitting light, and a light emitting part 20 for totally reflecting light emitted from the light source 10 The total reflection part 20 is generally configured to have two parallel first and second total reflection surfaces 21 and 22 in the form of a case having an internal space. 1, a dispersion point 30 is formed so as to disperse light, and light passing through the total reflection section 20 is dispersed through the dispersion point 30, And is configured to emit light. That is to say, the light incident from the light source 10 to the total reflection part 20 is reflected along the first and second total reflection surfaces 21 and 22 of the total reflection part 20, Dispersed through the dispersion point 30, and emitted toward the direction perpendicular to the traveling direction. However, since the shape of the conventional vehicle light guide mounted on the rear lamp of the vehicle body is at a general level, there has been a problem that the width of the design of the vehicle by the buyer is limited in a state where the aesthetics is deteriorated.

In order to overcome this limitation, as shown in Fig. 1 (b), a bezel 1 having a housing shape in a rear lamp of a vehicle, a light source 2 inserted into the bezel 1 to emit light, (3) for guiding light emitted from the light guide panel (2), and a light guide panel (3) for inserting the print pattern (3-1) on one side thereof, However, since the light extraction efficiency is lowered by using the printing pattern, there is a problem in reliability of the printing ink, and the light source is inserted only on one side of the printing ink, which causes a limitation in meeting the luminous intensity and the light distribution.

In addition, in the conventional vehicle lighting apparatus having the above-described structure, the light distribution can not be adjusted to be realized as a planar light source, and application of the light source is limited if the degree of light condensation is reduced.

Korean Patent Registration No. 10-1181012

SUMMARY OF THE INVENTION The present invention has been conceived in order to solve the above-mentioned problems, and an object of the present invention is to provide a planar light source having a light collecting member having a light collecting through hole for adjusting a light distribution distribution of the planar light source, The present invention provides a surface lighting device capable of maximizing optical efficiency by implementing surface lighting, and capable of reducing the quantity of LED by realizing stable surface illumination with excellent light collecting function, thereby securing cost competitiveness.

As a means for solving the above-mentioned problems, the present invention provides a surface emitting module comprising: a surface emitting module including a light guide member arranged in a structure for embedding a plurality of light sources; And a light collecting member on which a perforated optical pattern for collecting light emitted from the surface emitting module is formed.

According to the present invention, it is possible to maximize the degree of light convergence by implementing a surface illumination having a light collecting member having a light collecting through hole in order to realize an illuminating device having a light collecting function while adjusting the light distribution of the surface light source have.

In addition, it is possible to secure cost competitiveness by reducing the quantity of LED by realizing stable surface illumination with excellent light collecting function.

Further, a light shielding module having a bracket structure for supporting the light source module housed therein is formed of a reflective material that shields one region of the upper part of the light source module, and the light emitted from the light source is reflected by the shielding region, So that the light intensity of the light emitting portion can be increased.

FIG. 1 is a conceptual diagram showing the structure of a conventional vehicle lighting apparatus.
2 is a conceptual diagram showing a schematic configuration of a lighting apparatus according to the present invention.
FIG. 3 and FIG. 4 are conceptual diagrams showing an embodiment of a principal part of a light focusing member according to the present invention.
Fig. 5 is a schematic cross-sectional view showing a main portion of a surface emitting unit that emits a surface light source to the above-described light collecting member in Fig. 2. Fig.
FIG. 6 is a graph showing a result of a simulation experiment for confirming the condensing effect in the illuminating device according to the presence or absence of the condensing member according to the present invention.

Hereinafter, the configuration and operation according to the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description with reference to the accompanying drawings, the same reference numerals denote the same elements regardless of the reference numerals, and redundant description thereof will be omitted. The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

According to the present invention, a planar light source is implemented, and a light collecting member having a plurality of light collecting holes capable of collecting light emitted from the planar light source module is applied to adjust the light distribution characteristics of the planar light source, And it is an object of the present invention to provide a planar illumination capable of satisfying legal standards and enhancing simultaneous light efficiency.

2 is a conceptual diagram showing a schematic configuration of a lighting apparatus according to the present invention.

2, the illumination apparatus according to the present invention includes a surface light emitting module 100 including a light guiding member arranged in a structure for embedding a plurality of light sources, and a perforated optical system 100 for condensing light emitted from the surface light emitting module. And a light collecting member 200 on which a pattern is formed. In this case, a diffusion member for diffusing the light to be condensed may be disposed on the upper part of the condensing member 200. The surface light emitting module 100 and the condensing member 200 may have a bracket structure May be mounted in a structure that is received within the shielding module (300). The shielding module 300 may be formed of any one of Al, PC, PP, ABS, and PBT, which reflects light emitted from the surface emitting module 100 and transmits the light to the light collecting member 200 So that light can be diffused and condensed.

In the surface light emitting module 100, light is emitted through a light guide member that allows the light emitting region to perform surface emission, and the light to be emitted is condensed through the light collecting member 200 disposed on the upper side . It is preferable that the light collecting member 200 has a plurality of light collecting through holes formed in the base member, and only the light transmitted through the light collecting through holes is transmitted to the upper part so as to increase the intensity of light collecting.

FIG. 3 and FIG. 4 are a plan view and a conceptual view showing a light focusing member according to the present invention.

3, the light-collecting member 200 according to the present invention includes a light-collecting portion including a plurality of light-collecting holes 210 passing through light emitted from the surface light emitting module on a base substrate, And a blocking unit 220 for blocking the light to a predetermined wavelength. The light collecting unit refers to a plurality of light collecting holes 210 and the blocking unit 220 refers to a region for blocking light transmission to a region other than the light collecting hole 210.

FIG. 4 shows an example of the structure of the light collecting hole 210 of FIG. 3. The light collecting hole 210 basically has a diameter of an incident portion of the light collecting hole adjacent to the direction of the surface emitting module, Or less. This is to intensively form the condensing intensity. 2, the entrance b of the light collecting hole formed on the surface of the light collecting member adjacent to the surface emitting unit 100 and the diameter of the exit a formed on the opposite surface of the light collecting member are compared with each other, The diameter of the outlet (a) formed on the opposite surface of the light collecting member can be made equal or larger.

The structure of the above-described light collecting hole 210 may be designed to be variously shaped and sized according to the light distribution, and the cross-sectional shape of the hole may have various irregular shapes (single closed curves) as well as circles, ellipses and polygons. As described above, the ratio of the area between the upper surface and the lower surface of the light collecting hole 210 can be variously designed according to the light efficiency and the light condensation distribution. In consideration of the longitudinal and transverse sides of the light collecting hole, It is possible. 4 (c), the inclined surface of the inner surface of the hole may have a shape such as a curved line, a parabolic shape, etc., as well as a straight line, and the shape of the hole may be variously modified as shown in FIG. 4 (d) .

The light collecting hole 210 according to the present invention can intensively transmit light only at a desired specific location, thereby making it possible to form a strong light collecting degree.

In particular, in the structure of FIG. 2, the light emitted from the surface emitting module 100 can not be transmitted through the light collecting hole, and is reflected by the light collecting hole 200, So that the utilization efficiency of the light can be increased. For this, the light-collecting member may be formed of any one of Al, PC, PP, ABS, PBT, and Ag. Alternatively, the light-collecting member itself may be formed using light-absorbing resin or metal, and a reflective material layer may be formed on one surface of the light-collecting member facing the light-emitting surface of the surface light-emitting module 100 . In this case, the reflective material layer may be formed of any one material selected from TiO 2 , CaCO 3 , BaSO 4 , Al 2 O 3 , Silicon, PS, and Ag.

5 is a schematic cross-sectional view showing a main portion of the surface emitting unit 100 that emits the surface light source to the light collecting member 200 described above with reference to FIG.

Referring to FIG. 5, the light source module 100 according to the present invention includes at least one light source 130 and a light guide member 140 formed to embed the light source. In particular, the PCB 110 may include a printed circuit board 110 on which the light source 130 is mounted. In this case, the printed circuit board 110 refers to a PCB on which a circuit pattern is formed, that is, a PCB. It is preferable that the printed circuit board 110 is made of a transparent material. In the case of the conventional lighting device, it is opaque by using the FR4 printed circuit board. However, by using the transparent material, in particular the transparent PET printed circuit board, as in the present invention, it becomes possible to provide a transparent lighting device. In addition, in the present invention, a flexible printed circuit board (FPCB) can be used to secure certain flexibility.

The light source 130 of the light source module 100 according to the present invention is a side view in which one or more light sources are arranged on a printed circuit board 110 to emit light, type light emitting diode. That is, the light emitting diode of the present invention can be used as the light source 130 of the present invention, in which the direction of the emitted light is not directly directed upward but is emitted toward the side. According to the illumination apparatus of the present invention, since the light source 130 including the side-view light emitting diode is disposed directly under the light guide plate, light is diffused upward by utilizing the resin layer, which will be described below, The total number of light sources can be reduced, and the total weight and thickness of the lighting apparatus can be innovatively reduced.

The light guide member 140 disposed on the printed circuit board 110 is provided on the printed circuit board 110 to diffuse light from the light source 130. The light guide member 140 may be a resin layer replacing the conventional light guide plate as well as the light guide plate.

The reflective member 120 may be disposed between the printed circuit board 110 and the light guide member 140. In this case, the reflective member 120 is formed on the upper surface of the printed circuit board 110 And the light source 130 is formed through the through hole. The reflective member 120 is formed of a material having a high reflection efficiency to reflect light emitted from the light source 130 to an upper portion where the second diffusion member 150 is positioned, thereby reducing light loss. The reflective member 120 may be formed in a film form, and may include a synthetic resin dispersedly containing a white pigment in order to realize a property of reflecting light and promoting dispersion of light. Examples of the white pigment include titanium oxide, aluminum oxide, zinc oxide, lead carbonate, barium sulfate, calcium carbonate and the like. As the synthetic resin, polyethyleneterephthalate, polyethylene naphthalate, acrylic resin, colicarbonate, polystyrene, polyolefin , Cellulosic acid acetate, weather-resistant vinyl chloride, and the like can be used, but the present invention is not limited thereto. A reflective pattern may be formed on the surface of the reflective member 120, and the reflective pattern may scatter and scatter the incident light to uniformly transmit light to the diffusion member 150. The reflection pattern may be formed by printing on the surface of the reflective member 120 using reflective ink including any one of TiO 2 , CaCo 3 , BaSo 4, Al 2 O 3 , Silicon, and PS, but is not limited thereto. As the reflective member 120, transparent PET may be used in place of the film. In addition, the structure of the reflection pattern 121 has a structure including a plurality of protruding patterns. In order to increase the scattering effect of light, a dot pattern shape, a prism shape, a lenticular shape, a lens shape, However, the present invention is not limited thereto. In addition, the cross-sectional shape of the reflection pattern 121 may have a structure having various shapes such as a triangle, a quadrangle, a semicircle, and a sine wave.

The light guiding member 140 according to the present invention can be applied with a resin layer as a light guiding member. In this case, the resin layer is applied to the front surface of the light source 130 to fill the light source.

When the light guide member 140 is formed of the resin layer, the resin layer spreads the light emitted from the light source 130 forward. That is, the resin layer is formed to embed the light source 130, thereby performing the function of dispersing the light emitted laterally from the light source 130. That is, the function of the conventional light guide plate can be performed in the resin layer.

The resin layer of the present invention can be basically made of a resin capable of diffusing light. For example, the resin layer of the present invention may be composed of a self-hardening resin including an oligomer, and more specifically, the resin layer may be formed using a resin containing urethane acrylate oligomer as a main material. For example, a resin obtained by mixing a synthetic oligomer, a urethane acrylate oligomer and a polyacrylic polymer type, may be used. Of course, it may further comprise a monomer mixed with a low-boiling-point diluent type reactive monomer such as isobornyl acrylate (IBOA), hydroxypropyl acrylate (HPA), or 2-hydroxyethyl acrylate (HPA). A photoinitiator -hydroxycyclohexyl phenyl-ketone, etc.) or an antioxidant, etc. However, the above description is merely one example, and it is also possible to perform a light diffusing function which is currently developed, commercialized, The resin layer of the present invention can be formed with all of the resins having the above properties.

Meanwhile, the resin layer of the present invention may further include a plurality of beads in which a hollow (or a cavity) is formed in a mixed and diffused form, and the beads improve the reflection and diffusion characteristics of light. For example, when the light emitted from the light source 130 is incident on the bead in the resin layer, the light is reflected and transmitted by the hollow of the bead, is diffused and condensed, and is emitted to the top. At this time, the reflectance and diffusivity of light are increased by the beads, so that the light quantity and the uniformity of the emitted light are improved, and as a result, the effect of improving the brightness of the illumination device can be obtained.

The content of the bead may be appropriately adjusted to obtain a desired light diffusion effect, and more specifically, it may be adjusted within the range of 0.01 to 0.3% based on the weight of the entire resin layer, but is not limited thereto. That is, the light emitted laterally from the light source 130 is diffused and reflected through the resin layer and the bead, and can proceed in the upward direction. The beads may be composed of any one selected from the group consisting of sillicon, silica, glass bubble, PMMA, urethane, Zn, Zr, Al 2 O 3 and acryl, The particle size of the beads may be in the range of 1 탆 to 20 탆, but is not limited thereto.

According to the present invention, the thickness of the conventional light guide plate can be innovatively reduced due to the presence of the resin layer, so that the thinness of the entire product can be realized, and the flexible material can be easily applied to the curved surface The advantage of being able to improve the degree of freedom of design, and the advantage of being applicable to other flexible displays.

The light source module 100 according to the present invention may further include an optical pattern 160 disposed on the light guide module 140. The optical pattern 160 may be formed on the surface of the light guide member, but may be formed on the surface of the transparent optical sheet 161. Alternatively, it may be arranged between a pair of optical sheets 161 and 162 as in the structure of Fig.

The optical pattern 160 basically functions to prevent light emitted from the light source 130 from being concentrated. The optical pattern 160 may be formed as a light shielding pattern so that a light shielding effect can be realized in order to prevent a phenomenon in which light is excessively strong in strength to deteriorate optical characteristics or yellowish light. The light shielding pattern may be printed on the upper surface of the light guide member 130 using light shielding ink, or by performing a printing process on the upper or lower surface of the optical sheet.

The optical pattern 160 is not a function to completely block the light, but can be implemented so that the light shielding degree or the diffusing degree of the light can be controlled by one optical pattern so as to perform a function of partial shielding and diffusion of light. Furthermore, more particularly, the optical pattern 160 according to the present invention may be implemented with a superimposed printing structure of a complex pattern. The structure of superimposed printing refers to a structure in which one pattern is formed and another pattern is printed on the pattern. For example, in implementing the optical pattern 160, a light shielding ink containing at least one material selected from TiO 2 , CaCO 3 , BaSO 4 , Al 2 O 3 , and Silicon is formed on the lower surface of the polymer film in the direction of light emission And a light-shielding pattern formed by using a light-shielding ink containing a mixed material of Al or Al and TiO 2 .

That is, it is also possible to form a diffusion pattern on the surface of the polymer film by white printing, form a light shielding pattern thereon, or form a double structure in the reverse order. Of course, it will be obvious that the formation design of such a pattern can be variously modified in consideration of light efficiency, intensity, and shading ratio. Alternatively, it is also possible to form a light-shielding pattern, which is a metal pattern, in the middle layer in a sequential laminated structure, and to form a triplet in which a diffusion pattern is formed on the upper and lower portions, respectively. In such a triple structure, it is possible to select and implement the above-mentioned materials. As a preferable example, one of the diffusion patterns is realized by using TiO 2 having excellent refractive index, and CaCO 3 excellent in light stability and color is used together with TiO 2 The light diffusing pattern can be realized and the light efficiency and homogeneity can be ensured through the triple structure which realizes a light shielding pattern by using Al which is excellent in concealment. Particularly, CaCO 3 functions to reduce the exposure of yellow light and finally realize white light. Thus, it is possible to realize light with more stable efficiency. In addition to CaCO 3 , particles such as BaSO 4 , Al 2 O 3 , It is also possible to utilize inorganic materials having a large size and a similar structure. In addition, it is preferable that the optical pattern 160 is formed by adjusting the pattern density so that the pattern density becomes lower as the distance from the emitting direction of the LED light source decreases.

6 is a graph showing a result of a simulation experiment for confirming the condensing effect in the surface illumination depending on the presence or absence of the condensing member according to the present invention.

6 (a) shows a result obtained by applying only the surface emitting unit 100 of FIG. 2, and FIG. 6 (b) shows a result of arranging the light collecting member 200 according to the present invention on the top of the surface emitting unit 100 Fig. As a result, the total light efficiency decreased from 67.2% to 39.0% when the light collecting member was provided on the surface light emitting unit. However, the maximum intensity value was 87.2 cd at 52.6 cd, Which is about 66%.

It is also seen from the above results that the presence of the condensing member in the surface illumination according to the present invention increases the light collection efficiency, which increases the light collection efficiency by controlling the light distribution distribution by adjusting the shape of the condensing hole of the condensing member.

The surface lighting device according to the present invention is also 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.

In the foregoing detailed description of the present invention, specific examples have been described. However, various modifications are possible within the scope of the present invention. The technical idea of the present invention should not be limited to the embodiments of the present invention but should be determined by the equivalents of the claims and the claims.

100: surface light emitting unit
110: printed circuit board
120: reflective member
130: Light source
140: light guide member
150: diffusion member
160: Optical pattern
161, 162: Optical sheet
200: condensing member
300: shielding module

Claims (20)

A surface emitting module including a light guide member arranged in a structure for embedding a plurality of light sources; And
A condensing member on which a perforated optical pattern for condensing light emitted from the surface emitting module is formed;
≪ / RTI >
The method according to claim 1,
The light-
A light collecting part including a plurality of light collecting holes passing through light emitted from the surface light emitting module on a base substrate;
A shielding portion for shielding light to a region other than the light collecting hole;
And a light source.
The method of claim 2,
The light-
The diameter of the incident portion of the light collecting hole adjacent to the direction of the surface emitting module is formed to be equal to or smaller than the diameter of the emitting portion facing the incident portion.
The method of claim 3,
The light-
And the width of the light collecting hole gradually decreases from the incident portion toward the exit portion.
The method of claim 4,
Wherein the sectional shape of the light collecting hole is any one of a circle, an ellipse, a polygon, and a single closed curve.
The method of claim 3,
The light-
Al, PC, PP, ABS, PBT, and Ag.
The method of claim 3,
The light-
And a reflective material layer is coated on one surface of the base substrate facing the light exit surface of the surface light emitting module.
The method of claim 7,
The reflective material layer
TiO 2 , CaCO 3 , BaSO 4 , Al 2 O 3 , Silicon, and PS.
The method according to any one of claims 1 to 8,
And a shielding module having an opening area for receiving the surface light emitting module therein and having an upper opening.
The method of claim 9,
The shielding module comprises:
Al, PC, PP, ABS, and PBT.
The method of claim 9,
The surface-
And a reflective sheet disposed between the light guide member and the printed circuit board on which the plurality of light sources are mounted.
The method of claim 11,
The reflective sheet may include:
And a reflective pattern formed of any one of TiO 2 , CaCO 3 , BaSO 4 , Al 2 O 3 , Silicon, and PS formed on the surface of the reflective sheet.
The method of claim 11,
The reflective sheet may include:
Transparent PET, white PET, and Ag sheet.
The method of claim 9,
The surface-
And a second diffusion member disposed on the upper surface of the light guide member.
15. The method of claim 14,
And a plurality of optical patterns disposed between the second diffusion member and the light guide member.
16. The method of claim 15,
In the optical pattern,
A second diffusion member formed on the surface of the second diffusion member,
And the second optical sheet layer is formed on the surface of the first optical sheet layer.
16. The method of claim 15,
In the optical pattern,
And the first optical sheet layer and the second optical sheet layer disposed on the upper surface of the light guide member.
16. The method of claim 15,
In the optical pattern,
A diffusion pattern formed using a light shielding ink containing at least one material selected from TiO 2 , CaCO 3 , BaSO 4 , and Silicon,
Wherein the light-shielding pattern formed using Al or a light-shielding ink containing a mixture of Al and TiO 2 has an overlapping structure.
The method of claim 9,
The light guide member
Wherein the resin layer closely adhered to the light source further comprises a bead made of any one of silicon, silica, and PMMA.
A lamp for a vehicle comprising a lighting device according to any one of claims 1 to 8.
KR1020120147656A 2012-09-27 2012-12-17 Lamp unit and automobile lamp using the same KR102023536B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
KR1020120147656A KR102023536B1 (en) 2012-12-17 2012-12-17 Lamp unit and automobile lamp using the same
PCT/KR2013/008713 WO2014051394A1 (en) 2012-09-27 2013-09-27 Illuminating device and vehicle lamp comprising same
EP13840484.3A EP2902694B1 (en) 2012-09-27 2013-09-27 Illuminating device and vehicle lamp comprising same
US14/432,091 US10030840B2 (en) 2012-09-27 2013-09-27 Illuminating device and vehicle lamp comprising same
CN201380061622.9A CN104813098B (en) 2012-09-27 2013-09-27 Lighting device and the car light including the lighting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120147656A KR102023536B1 (en) 2012-12-17 2012-12-17 Lamp unit and automobile lamp using the same

Publications (2)

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KR20140078370A true KR20140078370A (en) 2014-06-25
KR102023536B1 KR102023536B1 (en) 2019-09-24

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JP2021117253A (en) * 2020-01-22 2021-08-10 株式会社フォトクラフト社 Sheet for transmitted light and manufacturing method therefor

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JP2005203111A (en) * 2004-01-13 2005-07-28 Koito Mfg Co Ltd Vehicular lighting fixture
JP2010198992A (en) * 2009-02-26 2010-09-09 Three M Innovative Properties Co Plane light-emitting device and vehicular lighting device
KR20120013708A (en) * 2010-08-06 2012-02-15 엘지이노텍 주식회사 Optical sheet, backlight unit and display device including the same
WO2012086896A1 (en) * 2010-12-23 2012-06-28 Lg Innotek Co., Ltd. Back light unit and liquid crystal display using the same
KR101181012B1 (en) 2010-07-30 2012-09-07 기아자동차주식회사 Light guide for rear lamp

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Publication number Priority date Publication date Assignee Title
JP2005203111A (en) * 2004-01-13 2005-07-28 Koito Mfg Co Ltd Vehicular lighting fixture
JP2010198992A (en) * 2009-02-26 2010-09-09 Three M Innovative Properties Co Plane light-emitting device and vehicular lighting device
KR101181012B1 (en) 2010-07-30 2012-09-07 기아자동차주식회사 Light guide for rear lamp
KR20120013708A (en) * 2010-08-06 2012-02-15 엘지이노텍 주식회사 Optical sheet, backlight unit and display device including the same
WO2012086896A1 (en) * 2010-12-23 2012-06-28 Lg Innotek Co., Ltd. Back light unit and liquid crystal display using the same

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021117253A (en) * 2020-01-22 2021-08-10 株式会社フォトクラフト社 Sheet for transmitted light and manufacturing method therefor
JP7269651B2 (en) 2020-01-22 2023-05-09 株式会社フォトクラフト社 Transmitted light sheet and manufacturing method thereof

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