KR102012746B1 - Automobile lamp - Google Patents

Automobile lamp Download PDF

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Publication number
KR102012746B1
KR102012746B1 KR1020120147657A KR20120147657A KR102012746B1 KR 102012746 B1 KR102012746 B1 KR 102012746B1 KR 1020120147657 A KR1020120147657 A KR 1020120147657A KR 20120147657 A KR20120147657 A KR 20120147657A KR 102012746 B1 KR102012746 B1 KR 102012746B1
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KR
South Korea
Prior art keywords
light
guide member
light source
acrylate
colored
Prior art date
Application number
KR1020120147657A
Other languages
Korean (ko)
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KR20140078371A (en
Inventor
안경수
이정오
Original Assignee
엘지이노텍 주식회사
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Priority to KR1020120147657A priority Critical patent/KR102012746B1/en
Publication of KR20140078371A publication Critical patent/KR20140078371A/en
Application granted granted Critical
Publication of KR102012746B1 publication Critical patent/KR102012746B1/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
    • 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
    • F21K9/64—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
    • 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
    • F21S43/237—Light guides characterised by the shape of the light guide rod-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
    • F21S43/239—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
    • F21S43/242—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
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
    • G02B6/0041—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided in the bulk of the light guide
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Planar Illumination Modules (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface light source for a vehicle that can simplify the structure while increasing the light efficiency, and in particular, a light source module including a plurality of light sources and a colored type light which guides the light emitted from the light source to implement colored light. Including a guide member, wherein the optical guide member is characterized in that it comprises a material in which a colored organic pigment or colored inorganic pigments are mixed in the transparent resin.

Description

Car surface lighting {Automobile lamp}

The present invention relates to a surface lighting for a vehicle that can increase the light efficiency while simplifying the structure.

Lighting units utilizing various light sources used in electronic devices are implemented in such a way as to increase light efficiency by utilizing suitable light sources according to the characteristics of each electronic device.

Recently, the lighting unit used in such an electronic device is a backlight unit applied to a flat panel display, an indoor light used in an indoor environment, or a head light, a fog light, a retracted light, a vehicle width light, a number light, a tail light, a braking light, a direction installed in an exterior of a vehicle It can be variously applied to indicator lights, emergency flashing lights, and interior lightings installed inside a vehicle.

However, most of such lighting is a method of approaching in terms of the brightness of the surface light source by applying a member such as a light guide plate for efficient transmission of light for providing light.

For example, FIG. 1 briefly illustrates a structure of a lighting apparatus used in a conventional vehicle.

As shown in FIG. 1, the conventional vehicle light guide includes a light source 10 emitting light having a predetermined light emission angle and a total reflection part 20 totally reflecting light emitted from the light source 10. The total reflection part 20 is generally configured such that two parallel first total reflection surfaces 21 and second total reflection surfaces 22 are formed in a case shape having an inner space. A scattering point 30 is formed inside the total reflection part 20 to disperse the light as shown in FIG. 1, and light passing through the total reflection part 20 is dispersed through the scattering point 30 and is outside. It is configured to emit light. That is, the light incident from the light source 10 to the total reflection part 20 travels along the total reflection part 20 through a process of being reflected through the first and second total reflection surfaces 21 and 22 of the total reflection part 20. And is distributed through the dispersion point 30 and emits light toward the right direction in the traveling direction. However, since the conventional vehicle light guide is mounted on the rear lamp of the vehicle body in a general level, there is a problem that the buyer can select a vehicle through a design in a deteriorated aesthetics.

To overcome this limitation, as shown in (b) of FIG. 1, a bezel 1 having a housing shape and a light source 2 inserted into the bezel 1 and emitting light to the rear lamp of the vehicle and the light source (2) to guide the light emitted from, but on one side of the vehicle lighting consisting of the light guide panel 3 is inserted into the printing pattern (3-1) is provided with a printing pattern therein to increase the design effect Although the structure is proposed, this reduces the light extraction efficiency by using a printing pattern, causes a problem in the reliability of the printing ink, and the light source is inserted only on one side, which causes a limitation in satisfying the luminous intensity and light distribution.

Particularly, in order to implement light having colored colors, such as tail lamps, stop lamps, and ture signal lamps, through the light exiting forward from the light guide panel 3, FIG. In the structure of (b) of FIG. 1, an external lens 40, such as the structure of FIG. 2, disposed at regular intervals between the bezel 1 and the inner lens 1-1 should be essentially disposed. Such a structure is provided with an external lens having a color disposed in a predetermined distance for the efficiency of the surface light source to realize the color, which increases the size and thickness of the entire vehicle lighting and also acts as a factor that inhibits the light efficiency. Done.

Korean Patent Publication No. 10-1181012

The present invention has been made to solve the above-described problem, an object of the present invention is to provide a color in the light guide member itself in a structure for implementing a surface light for a vehicle, so as to provide a separate color such as an outer lens The present invention provides a surface light source for a vehicle that can realize various colors of lighting without additional structures.

As a means for solving the above problems, the present invention provides a light source module including a plurality of light sources; A color type light guide member for guiding the light emitted from the light source to implement colored light; wherein the light guide member is a material in which a colored organic pigment or a colored inorganic pigment is mixed with a transparent resin; To provide a surface lighting for a vehicle comprising a.

According to the present invention, by providing a color of the light guide member itself in a structure for implementing a surface light for a vehicle, it is possible to implement a surface light of various colors without additional structures such as an outer lens have.

In particular, in the case of vehicle lighting, intensive vehicle lighting is realized by integrating an inner lens such as a light guide member and an outer lens such as a cover cover member to implement intensive vehicle lighting such as a taillight, a braking light, and a turn signal. There is an advantage that can be implemented in a thin structure of a lens that requires a variety of colors.

In addition, it is possible to use a relatively efficient white LED compared to the LED, such as red, green, blue, there is an effect that can improve the light efficiency.

1 is a conceptual diagram showing the structure of a conventional vehicle lighting apparatus.
FIG. 2 is a conceptual diagram illustrating a structure of an external lens inserted in FIG. 1.
3 is a perspective conceptual view of the light guide member of the vehicle lighting according to the present invention, Figure 4 is a conceptual view showing a cross-section AA 'of FIG.
5 and 6 show another embodiment of a vehicle lighting according to the invention.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration and operation according to the present invention. In the description with reference to the accompanying drawings, the same components are given the same reference numerals regardless of the reference numerals, and duplicate description thereof will be omitted. Terms such as first and second 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.

The present invention is to implement a surface light source applied to a vehicle lighting, implement a light guide member in a color structure to provide a light of the structure that can implement a color light without the configuration of an additional external lens, etc. Make a point.

3 is a perspective conceptual view of the light guide member 140 of the vehicle lighting 100 according to the present invention, Figure 4 is a conceptual view showing a cross-sectional view taken along line A '.

3 and 4, the vehicle lighting according to the present invention is a light source module including a plurality of light sources 120, and a colored type that guides the light emitted from the light source 120 to implement colored light ( color type) is configured to include an optical guide member 140. In particular, the light guide member 140 is not transparent but is preferably formed to have a color (color) by itself, for this purpose by using a material mixed with a colored organic pigment or colored inorganic pigment to the transparent resin The injected structure can be applied.

In this case, the light source 120 generally has a function of emitting light into the light guide member 140. As shown in FIG. 2, an edge type is provided at a side surface of the light guide member 140. It may be implemented in a structure arranged in. The light source 120 is implemented as a structure mounted on the printed circuit board 110, and may be applied to either a side view type light emitting diode or a top view type light emitting diode. In this case, the printed circuit board 110 means a substrate having a circuit pattern formed on the substrate, that is, a PCB. In the present invention, the printed circuit board 110 is preferably a printed circuit board made of a transparent material. Conventional vehicle lamps are opaque by using FR4 printed circuit boards, but transparent materials, in particular transparent PET printed circuit boards, can be provided by using a transparent material as in the present invention. In addition, in the present invention, it is possible to form a flexible printed circuit board (FPCB) in order to secure a certain flexibility.

In particular, in the structure as shown in FIG. 4, the light reflecting member 130 of the light source 120 and the printed circuit board 110 surrounding the light source 120 may be further included in the structure of the light source module. In this case, the light leakage from the light guide member 140 or the light diffused by the light source 120 itself can be focused on the light guide member 140 to increase the light efficiency. The re-reflective member may be formed of a material including any one of Al, PC, PP, ABS, and PBT.

The optical guide member 140 may perform a function of guiding light by using a synthetic resin material of a transparent material, and for this purpose, a reflective pattern 141 is provided on a surface to increase the reflectance of light therein. You can do that. The reflective pattern may form intaglio irregularities on the surface of the pre-formed optical guide member in consideration of various curvatures in which the tail light of the vehicle is disposed, and may be implemented by etching or sand blast. .

In particular, the optical guide member 140 according to the present invention is polymethyl methacrylate (PMMA), polystyrene (PS), cyclic olefin copoly (COC), polyethylene terephthalate (PET), acrylic resin, urethane acrylate ( Urethane Acrylate, Epoxy Acrylate, Polyester Acrylate, Polyether Acrylate, Polybutadiene Acrylate, Silicon Acrylate It can be implemented through the injection process using a single transparent resin. In this case, by forming a liquid resin mixed with a variety of color pigments or dyes prior to the injection process, by performing the injection, it is possible to implement the color through a variety of color pigments.

The above-described color pigments may be applied to various applicable materials such as organic pigments or inorganic pigments, and further, silicone, silica, glass bubble, PMMA, urethane, Zn, Zr By inserting a diffusion material for diffusing light composed of at least one selected from Al 2 O 3 , acryl (acryl) in the form of beads may maximize the light extraction efficiency. An example of such a diffusion material may further include a plurality of beads in which a hollow (or void) is formed therein and mixed and diffused, and the beads serve to improve reflection and diffusion characteristics of light.

The color pigment mixed in the light guide member may be applied to color pigments and dyes that are generally used, and in order to increase light efficiency and color reproducibility, red, green, and blue phosphor materials may be applied to the resin. It can also mix.

For example, color reproducibility may be improved by mixing an inorganic or organic pigment that absorbs or reflects (or transmits) a specific wavelength band of light into the transparent synthetic resin material according to the present invention. In addition, desired color coordinates may be achieved by controlling the amount of the wavelength conversion material (fluorescent material) and the inorganic / organic pigment mixed through the transmission / reflection spectrum.

For example, the inorganic pigment may be a cobalt aluminate pigment (eg Co-AlO) as a blue pigment. The inorganic pigment may be a chromium oxide pigment (eg, CrO) as a green pigment. That is, a blue pigment and a green phosphor material reflecting the blue wavelength band and the green wavelength band and absorbing the red wavelength band are mixed or used, or a green pigment and green phosphor material reflecting the green wavelength band and absorbing the red wavelength band. May be used in combination, or the blue and green pigments may be mixed with a green phosphor material.

Alternatively, the organic pigment may be an anthraquinone-based material (for example, Red Fluorescent Dye-56), and may be used as a coloring component "C.I. Pigment Violet 19, 23". That is, an organic pigment and a green phosphor material which transmit the green wavelength band and absorb the red wavelength band may be mixed and used.

In addition, hematite pigments (eg, α-Fe2O3) may be used as the inorganic pigments included in the red phosphor material. That is, a hematite pigment and a red phosphor material which reflect the blue wavelength band and the red wavelength band and absorb the yellow and green wavelength bands may be mixed and used. As the organic pigment included in the red phosphor material, “Green Fluorescent Dye-73”, which transmits blue and red wavelength bands and absorbs yellow and green wavelength bands, may be used.

In the above-mentioned phosphor material, green phosphor material is Y3 (Al, Ga) 5O12: Ce, CaSc2O4: Ce, Ca3 (Sc, Mg) 2Si3O12: Ce, (Sr, Ba) 2SiO4: Eu, (Si, Al) 6 (O, N) 8: Eu (β-sialon), (Ba, Sr) 3Si6O12N2: Eu, SrGa2S4: Eu, BaMgAl10O17: Eu, Mn can be used, and LuAG-based phosphors such as (Y1-x-yLuxCey) 3Al5O12 Materials may also be used, in addition to various green phosphor materials.

In addition, the above-mentioned red phosphor material is (Ca, Sr, Ba) 2Si5 (N, O) 8: Eu, (Ca, Sr, Ba) Si (N, O) 2: Eu, (Ca, Sr, Ba) AlSi (N, O) 8: Eu, (Sr, Ba) 3SiO5: Eu, (Ca, Sr) S: Eu, (La, Y) 2O2S: Eu, K2SiF6: Mn, CaAlSiN: Eu are also available Various red phosphor materials can be used.

Furthermore, as yellow phosphor material, (Y1-x-yGdxCey) 3Al5O12, (Y1-xCex) 3Al5O12, (Y1-xCex) 3 (Al1-yGay) 5O12, (Y1-x-yGdxCey) 3 (Al1-zGaz) 5O12 YAG-based phosphors such as and LuAG-based phosphors such as (Y1-x-yLuxCey) 3Al5O12, Silicate-based phosphors such as (Sr, Ca, Ba, Mg) 2SiO4: Eu, or oxynitride phosphors such as (Ca, Sr) Si2N2O2: Eu It is also possible to use, in addition to various yellow phosphor materials can be used.

The color reproducibility can be further improved due to the intermixing of the phosphor material. However, if the light efficiency (in the line satisfying the light emission regulation) required by the cost aspect or the vehicle tail light can be satisfied, various dyes as well as the above-described phosphor material Pigments may be applied.

FIG. 5 illustrates another embodiment of the light guide member according to the present invention described above with reference to FIG. 4.

Referring to FIG. 5, the structure and difference of FIG. 4 in the present embodiment are that the light guide member is a transparent first light guide member 140A for guiding the light emitted from the light source to the front and the first light guide. There is a difference in that it is formed by injecting the dual structure of the color type second light guide member 140B integrally formed on the upper surface of the member. Such a structure enables to perform a general light induction function by using the above-mentioned transparent synthetic resin to enhance the light induction function, and at the same time, only the second light guide member 140B of the unitary structure implemented by the double injection process is a colored inorganic or Organic pigments are mixed to implement colored light guide members to achieve desired color reproduction. Compared with the structure of FIG. 4, it is possible to eliminate the light loss due to the light absorption generated by the colored light guide member, thereby increasing the light transmission efficiency. Other configurations are omitted as described above in FIG.

4 and 5, the lower portion of the light guide member according to the present invention preferably further includes a reflecting member 160.

The reflective member 160 is formed of a material having high reflection efficiency, thereby reflecting the light emitted from the light source 160 to the upper portion where the light guide member 140 is located to reduce the light loss.

The reflective member 160 may be formed in the form of a film, and may be formed to include a synthetic resin containing dispersion of a white pigment in order to implement a property of promoting light reflection and light dispersion.

For example, titanium oxide, aluminum oxide, zinc oxide, lead carbonate, barium sulfate, calcium carbonate may be used as the white pigment, and polyethylene terephthalate, polyethylene naphthalate, acrylic resin, colicarbonate, polystyrene, polyolefin may be used as the synthetic resin. , Cellulose source acetate, weather resistant vinyl chloride, etc. may be used, but is not limited thereto. A reflective pattern may be formed on the surface of the reflective member 160, and the reflective pattern serves to uniformly transmit the light to the optical guide member 140 by scattering and dispersing incident light. The reflection pattern may be formed by printing on the surface of the reflective member 160 using a 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 160, transparent PET may be used instead of the film. In addition, a reflection pattern is provided on the surface of the reflection member to increase reflection efficiency, and the reflection pattern has a structure having a plurality of protruding patterns, and a dot (dot) to increase the light scattering effect. ), But may be formed in a pattern shape, a prism shape, a lenticular shape, a lens shape, or a combination thereof, but is not limited thereto. In addition, the cross-sectional shape of the reflective pattern may be formed of a structure having various shapes such as a triangle, a square, a semicircle, and a sinusoidal wave.

6 shows another embodiment of a vehicle lamp according to the invention.

Basically, the color of the light guide member 140 including the colored pigment is the same, and the reflection pattern 141 is provided on the surface of the light guide member 140, and the reflecting member 160 has the same viscosity. Do. However, the light output direction of the light source 120 is not directed directly to the inside of the light guide member 140, but emits light in the upper emission type, and the light guide member 140 of the light guide member 140 is re-reflected. It can be implemented as a structure that can guide internally. In particular, in this case, the re-reflective member 130 has the advantage of improving the entry efficiency of the light by re-reflecting the leakage light of the light emitted from the mutually opposite directions.

The surface light source for a vehicle according to the present invention described above may implement a color in each light guide member itself, and thus may use a white LED without changing the color of the LED, thereby improving light efficiency, and without using a separate external lens. By applying the light guide member of the integrated structure, it is possible to reduce the cost through the integration of tail light & stop light and turn signal.

Lighting device according to the present invention is applicable to various lamp devices, such as vehicle lamps, home lighting devices, industrial lighting devices that require lighting. For example, when applied to a vehicle lamp, it is also applicable to headlights, vehicle interior lighting, doorscar, rear lights and the like. In addition, the lighting apparatus of the present invention can be applied to the field of the backlight unit applied to the liquid crystal display device, and can be applied to all the lighting related fields that are currently developed and commercialized or can be implemented according to future technology development.

In the detailed description of the invention as described above, specific embodiments have been described. However, many modifications are possible without departing from the scope of the invention. The technical spirit of the present invention should not be limited to the described embodiments of the present invention, but should be determined not only by the claims, but also by those equivalent to the claims.

110: printed circuit board
120: light source
130: re-reflective member
140: optical guide member
150: colored pigment
160: reflective member

Claims (11)

A light source module including a printed circuit board and a plurality of light sources disposed on the printed circuit board;
A color type light guide member disposed on one side of the light source and configured to guide colored light emitted from the light source to implement colored light; And
A re-reflection member disposed on the other side of the light source to reflect the light emitted from the light source and guide the light to the light guide member;
The optical guide member includes a material in which a colored organic pigment or colored inorganic pigment is mixed with the transparent resin,
The light source is an upper emission type structure that emits light in a direction parallel to the side of the light guide member,
The re-reflective member is disposed to surround the side and the top of the light source from one side of the printed circuit board to inject light emitted in a direction parallel to the side of the light guide member toward the side of the light guide member. .
The method according to claim 1,
The optical guide member includes a transparent first optical guide member that guides the light emitted from the light source and guides the light forward, and a color type second optical guide member disposed on an upper surface of the first optical guide member. Car surface lighting.
The method according to claim 1 or 2,
The light source module is a surface light for a vehicle disposed on one side or both sides of the light guide member.
The method according to claim 3,
The optical guide member is polymethyl methacrylate (PMMA), polystyrene (PS), cyclic olefin copoly (COC), polyethylene terephthalate (PET), acrylic resin, urethane acrylate (Urethane Acrylate), epoxy acrylate (Epoxy) Automotive surface lighting comprising any one selected from Acrylate, Polyester Acrylate, Polyether Acrylate, Polybutadiene Acrylate, and Silicon Acrylate.
The method according to claim 3,
The optical guide member is composed of at least one selected from silicon, silica, glass bubble, PMMA, urethane, Zn, Zr, Al 2 O 3 , and acryl. Further comprising a diffusing material for diffusing light,
The diffusing material is a vehicle surface lighting comprising a shape in which a plurality of beads are hollow formed therein mixed and diffused.
delete delete The method according to claim 3,
And a reflection member disposed below the light guide member and a plurality of reflection patterns formed on a surface of the reflection member.
delete The method according to claim 8,
The reflective member is a vehicle surface lighting of any one of transparent PET, white PET, Ag sheet. delete
KR1020120147657A 2012-12-17 2012-12-17 Automobile lamp KR102012746B1 (en)

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KR102498129B1 (en) 2015-12-21 2023-02-17 엘지이노텍 주식회사 Lighting device
CN110958960A (en) * 2017-07-21 2020-04-03 魏德塑料有限责任公司 Component for a vehicle
US10908342B2 (en) * 2017-12-14 2021-02-02 Schott Ag Linear light source
EP3944345A4 (en) * 2019-03-22 2022-12-14 LG Innotek Co., Ltd. Lighting module and lighting device comprising same
KR102688695B1 (en) * 2019-11-29 2024-07-26 에스엘 주식회사 Lamp for vehicle
JP2021163628A (en) 2020-03-31 2021-10-11 市光工業株式会社 Vehicular lighting fixture

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