KR20140078373A - Light unit and Lamp unit for automobile of using the same - Google Patents

Light unit and Lamp unit for automobile of using the same Download PDF

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Publication number
KR20140078373A
KR20140078373A KR1020120147659A KR20120147659A KR20140078373A KR 20140078373 A KR20140078373 A KR 20140078373A KR 1020120147659 A KR1020120147659 A KR 1020120147659A KR 20120147659 A KR20120147659 A KR 20120147659A KR 20140078373 A KR20140078373 A KR 20140078373A
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KR
South Korea
Prior art keywords
light
light source
light guide
guide member
shielding
Prior art date
Application number
KR1020120147659A
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Korean (ko)
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KR102047833B1 (en
Inventor
양현덕
박광호
박무룡
김진희
조민수
Original Assignee
엘지이노텍 주식회사
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Priority to KR1020120147659A priority Critical patent/KR102047833B1/en
Publication of KR20140078373A publication Critical patent/KR20140078373A/en
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Publication of KR102047833B1 publication Critical patent/KR102047833B1/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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/24—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
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/37—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors characterised by their material, surface treatment or coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)

Abstract

The present invention relates to a lighting device and an automobile lamp including the same. More specifically, the lighting device according to the present invention includes: a light source module including at least one light source and a light guide member formed to fill up the light source; a blocking module to accommodate the light source module inside, and to form an open area and a closed area on top of a resin layer; and a dispersion member arranged on top of the light guide member.

Description

[0001] The present invention relates to a lighting device and a vehicle lamp including the lighting device.

The present invention relates to a lighting device and a vehicle lamp including the same.

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 such conventional vehicular illumination and indoor illumination, there are many limitations in the structural aspect of increasing the light efficiency.

Korean Patent Registration No. 10-1181012

SUMMARY OF THE INVENTION It is an object of the present invention to provide a light shielding module having a bracket structure for shielding a light source module housed therein, And the light emitted from the light source can be reflected by the shielding region and concentrated on the diffusion member, thereby increasing the brightness and brightness of the light emitting portion.

As a means for solving the above-mentioned problems, the present invention provides a light source module including a light source module including at least one light source and a light guide member formed to embed the light source, And a light diffusing member disposed on the light guide member.

A light shielding module having a bracket structure for supporting a light source module housed therein is formed in a structure for shielding one region of the upper part of the light source module, and light emitted from the light source is reflected on the shielding region and can be concentrated on the diffusion member So that the brightness and brightness of the light emitting portion are increased.

In particular, the upper end of the shielding module has a bended bent portion, and the brightness can be adjusted according to the bent angle of the bent portion.

Furthermore, it is possible to secure the diversity of the mechanism design and improve the light efficiency through the non-air gap structure in which the spacing between the light guide module and the diffusion member is removed.

FIG. 1 is a conceptual diagram showing the structure of a conventional vehicle lighting apparatus.
FIG. 2 is a schematic cross-sectional view showing a main part of a lighting apparatus according to the present invention. FIG.
3 to 7 are sectional schematic views showing another embodiment of the lighting apparatus according to the present invention described above with reference to FIG.
8 is a table showing the results of a comparative experiment.

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.

FIG. 2 is a schematic cross-sectional view showing a main part of a lighting apparatus according to the present invention. FIG.

2, the illumination apparatus according to the present invention includes a light source module 100 including at least one light source 130 and a light guide member 140 formed to embed the light source, And a diffusion member 150 disposed on the light guiding member 140. The shielding module 200 includes an opening area A and a shielding area B on the light guiding member 140, .

In particular, the illuminating device according to the present invention uses the shielding module 200 having the opening area and the shielding area to shield the light outflow to the outside, thereby improving the brightness And the light efficiency can be increased by closely arranging the diffusion member 150 on the shielding module 200 and removing the lower light guide member and the spacing portion.

For this, the light source module 100 according to the present invention is structured to be accommodated in the shielding module 200, and the shielding module 200 includes a lower and a side surface of the light source module, And a bent portion 210 bent toward the center of the light source module 100 to form the shielding region B, the shielding main body 220 having an upper portion opened and an upper end of the shielding body Lt; / RTI >

In particular, the bent portion 210 may be formed on an upper portion of the region where the light source is disposed, and may have a length longer than a boundary of the light exit surface of the light source 130. That is, the light source 130 may be formed longer in the direction of the center of the light source module than the position where the light source 130 is mounted. The shielding module 200 according to the present invention is characterized in that the light emitted from the light source 130 passes through the light guide member 140 and is emitted forward, And the light is guided to the reflective member on the lower portion of the light guide member, thereby enhancing the efficiency and concentration of light. For example, when the light source is a side-emitting type LED, the light X1 emitted from the light exit surface X may pass through the inside of the light guide member 140 directly to the opening, The light emitted from the light exit surface X may be reflected again on the inner surface of the bending portion 210 so as to realize the retroreflectivity and proceed through the opening region A. As a result, It can be increased.

That is, the shielding module 200 according to the present invention has a function of shielding the outflow of light to the outside in the form of wrapping the lower side and the side of the illuminating device, and is formed in the upper region of the light source 130, As shown in the figure, the emitted light can be prevented from being leaked to the outside and reflected to the inside of the lighting device, so that the light efficiency can be increased.

The shielding module 200 may include any one of Al, PC, PP, ABS, and PBT. However, the shielding module 200 is not limited thereto. At this time, when the shielding module 200 is formed by evaporation with Al, it is possible to obtain an effect similar to that of the OLED light source because it has a visible effect like a mirror when the light source is not turned on. The bending portion 210 formed on the light source 130 of the shielding module 200 may be fixed in a direction perpendicular to the side surface of the shielding body 220 as shown in the figure, have. In this case, the luminance can be adjusted according to the angle of the bent portion 210.

In addition, since the light source and the shielding module 200 are fixed to one set, durability and assemblability are improved, and it is possible to have an advantageous effect in designing a lighting apparatus.

In particular, the illumination device according to the present invention may further include a diffusion member 150 disposed in a structure for sealing the opening area A formed by the shielding module 200.

The diffusion member 150 may be formed to be tightly coupled with the structure in which the distal end of the diffusion member 150 is fitted to both ends of the bending portion 210 forming the opening region A. [ Particularly, in this case, the diffusion member 150 has a structure (hereinafter, referred to as a 'non-air-gap structure') in the relation with the lower light guide member 140 Is more preferable. That is, it is preferable that the diffusion member according to the present invention is formed in a structure in which the light guiding member and the spacing portion are closely arranged so as not to be formed. This is because when a diffusing member is formed on a member such as a light guide plate in a general lighting apparatus that realizes surface light emission, a spacing for realizing the surface light emission is generally required to be about 10 mm, It is possible to improve the efficiency of light diffusion and the light efficiency by eliminating the point where the difficulty of design occurs. The diffusion member 150 diffuses light emitted from the light guide member 140 uniformly over the entire surface. The diffusion member 150 may be formed of an acrylic resin, but is not limited thereto. The diffusion member 150 may be formed of a material such as polystyrene (PS), polymethylmethacrylate (PMMA), cyclic olefin copoly (COC), polyethylene terephthalate ), And high-permeability plastic such as resin.

The light source module 100 may include a printed circuit board 110 on which the light source 130 is mounted. In this case, the printed circuit board 110 may be mounted on a substrate A printed circuit board 110 of a transparent material is preferable in the present invention. 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 present invention is a side view type in which one or more light sources are arranged on a printed circuit board 110 to emit light. ) Light emitting diodes. 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 diffusion member 150 is positioned to reduce 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 140. 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.

3 to 7 are sectional schematic views showing another embodiment of the lighting apparatus according to the present invention described above with reference to FIG.

The difference between the structure of FIG. 2 and the structure of FIG. 3 is that the optical pattern 160 is disposed between the lower portion of the diffusion member 150 and the light guide member 140.

In this case, 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 disposed between the pair of optical sheets 161 and 162 as in the structure of Fig. In either case, the diffusion member 150 may have a structure without the light guide member 140 and an optical sheet layer (hereinafter, referred to as an 'optical pattern layer') in which the diffusion member 150 and the optical pattern are formed .) And a spacer-free structure so that the light efficiency can be increased.

FIG. 5 is a view illustrating a modification of the structure of FIG. 4 in which the diffusion member 150 is disposed at a lower portion of the bent portion 210. FIG. 6 is a cross- In the present embodiment.

The optical pattern 160 in FIGS. 3 to 6 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.

FIG. 7 is a sectional view showing the structure of the illumination device having the non-air gap structure of the shielding module and the diffusion member of FIG. 4 according to the present invention. And a brightness comparison with the lighting apparatus according to the present invention was performed. The results are shown in Fig.

In Comparative Example 1, the luminance was measured with the structure of Fig. 7 (structure with no shielding module + structure with air gap), Comparative Example 2 had structure without shielding module + air gap structure In the example, the luminance of the illuminating device according to Fig. 4 is measured.

As a result of comparison, it can be confirmed that the luminance of the illumination device according to the present invention is increased by about 10% as compared with the comparative example by removing the shielding module and the diffusion member.

The illumination device according to the present invention is applicable to various lamp devices requiring illumination, such as a vehicle lamp, a domestic illumination device, and an industrial illumination 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: Light source module
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: Shielding module
210:
220: shielded body
A: opening area
B: Shielded area

Claims (20)

A light source module including at least one light source and a light guide member formed to embed the light source;
A shielding module accommodating the light source module therein and forming an opening area and a shielding area on the light guide member; And
A diffusion member disposed on the light guide member;
≪ / RTI >
The method according to claim 1,
The shielding module comprises:
A shielding body surrounding the lower and side surfaces of the light source module and having an upper portion opened;
A bent portion formed at an upper end of the shield body to form the shielded region by being bent toward the center of the light source module;
≪ / RTI >
The method of claim 2,
The bending portion
Wherein the light source is formed on an upper portion of an area where the light source is disposed.
The method of claim 3,
The bending portion
Wherein the light source has a length longer than a boundary of the light exit surface of the light source.
The method of claim 3,
The shielding module comprises:
Al, PC, PP, ABS, and PBT.
The method of claim 2,
Wherein the diffusion member
Wherein the light guide member is disposed in a non-air-gap structure.
The method of claim 2,
Wherein the diffusion member
And is arranged to cover the opening area.
The method of claim 7,
Wherein the diffusion member
And the distal end of the diffusion member is in close contact with both ends of the bent portion forming the opening region.
The method according to any one of claims 1 to 8,
The light source module includes:
And a plurality of optical patterns disposed between the diffusion member and the light guide member.
The method of claim 9,
In the optical pattern,
Wherein the diffusion member is formed at a lower portion thereof.
The method of claim 9,
In the optical pattern,
Wherein the light guide member is formed on a surface of a first optical sheet layer disposed on an upper surface of the light guide member.
The method of claim 11,
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.
The method of claim 9,
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 source module includes:
A printed circuit board for mounting the light source,
And a reflective member disposed between the printed circuit board and the light guide member.
15. The method of claim 14,
Wherein the reflective member comprises:
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 member.
15. The method of claim 14,
Wherein the reflective member comprises:
Transparent PET, white PET, and Ag sheet.
The method of claim 9,
The light guide member
A light guide plate or a resin layer.
18. The method of claim 17,
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.
15. The method of claim 14,
Wherein the printed circuit board includes:
A lighting device which is a transparent PET printed circuit board.
A lamp for a vehicle comprising the illumination device of claim 9.
KR1020120147659A 2012-12-17 2012-12-17 Light unit and Lamp unit for automobile of using the same KR102047833B1 (en)

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KR102047833B1 KR102047833B1 (en) 2019-11-22

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016064174A1 (en) * 2014-10-22 2016-04-28 엘지이노텍 주식회사 Lighting apparatus and vehicular lamp comprising same
KR20160062781A (en) * 2014-11-25 2016-06-03 현대자동차주식회사 Light source module of lamp for vehicle
WO2017095170A1 (en) * 2015-12-02 2017-06-08 엘지이노텍 주식회사 Lighting device and vehicular lamp comprising same
KR20180025732A (en) * 2016-09-01 2018-03-09 엘지이노텍 주식회사 Light device and vehicle lamp including the same
KR20190138987A (en) * 2018-06-07 2019-12-17 엘지이노텍 주식회사 Lighting module and lighting apparatus
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