KR20160088116A - Light unit and Lamp unit for automobile of using the same - Google Patents

Abstract

The present invention relates to a lighting device which controls the image of stereoscopic light through a structure for controlling the pointing angle or shape of the light in a light guide member. The lighting device comprises a light shape control part which has a void for receiving an air layer in a path of the light emitted from a light emitting unit, thereby variously controlling the stereoscopic image of the finally emitted light.

Description

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

Embodiments of the present invention are directed to an illumination device capable of adjusting the image orientation of three-dimensional light through a configuration for adjusting a directing angle of light or controlling a shape in a light guide member.

The lighting device is a device that brightens a dark place by using various light sources. Lighting devices are used to illuminate a specific object or place and to express the atmosphere in a desired shape or color.

In the case of expressing the atmosphere in a desired shape or color using a lighting apparatus of the prior art, the structure of the apparatus becomes complicated mechanically, thereby limiting the degree of design freedom in a desired shape, and there is a problem that installation and operation are difficult . As described above, there is a demand for an illumination device having a simple structure and simple installation and operation in order to express an atmosphere or optical image of a desired shape or color.

In addition, most of such illumination is mostly achieved by approaching the surface light source in terms of brightness by using a member such as a light guide plate for efficiently transmitting light for providing light. It is difficult to realize the slim of the illumination itself while securing the desired uniformity of the light in a limited place due to limitations of the illumination which can only be provided with a certain standard and configuration and it is difficult to diversify the width of the design by three- Lt; / RTI >

Embodiments of the present invention have been devised in order to solve the above-described problems, and in particular, it is an object of the present invention to provide an optical shape adjusting unit having a cavity for accommodating an air layer in a path of light emitted from a light emitting unit, Thereby providing a lighting device with a built-in lighting system.

As a means for solving the above-mentioned problems, in an embodiment of the present invention, there is provided a light emitting device comprising: a light emitting unit for emitting light; a light condition adjusting unit disposed in an optical path of light emitted from the light emitting unit, And a light guide member for embedding the light-emitting unit and the light-shaping unit.

According to the embodiment of the present invention, there is an effect that the stereoscopic image of the finally emitted light can be variously adjusted by implementing the optical shape adjusting unit having the cavity for accommodating the air layer in the path of the light emitted from the light emitting unit.

In addition, according to the embodiment of the present invention, a hot spot phenomenon caused by a light emitting unit such as an LED, for example, can be achieved without using a structure such as a light shielding pattern for shielding light by using the light- Can be removed.

In addition, according to the embodiment of the present invention, it is possible to control the length, thickness, and shape of the light that can be implemented so that the three-dimensional feeling of the light itself can be sensed and at the same time, The flexibility of the device itself can be ensured, the device can be efficiently installed in various equipment or places, the light efficiency can be increased, the number of light emitting units can be reduced, and the overall thickness of the lighting device can be reduced.

1 is a schematic cross-sectional view showing a main part of a lighting apparatus according to an embodiment of the present invention.
FIGS. 2 to 7 illustrate embodiments different from the embodiments of the present invention described above, and are schematic diagrams of conceptualizing only the main components of a lighting apparatus.
FIG. 8 illustrates an application example of implementing a stereoscopic image using the illumination device according to the embodiment of FIGS. 1 to 7. FIG.
FIGS. 9 and 10 show a stereoscopic optical image BL of a light illuminating device according to an embodiment of the present invention, which realizes a stereoscopic depth feeling in which an image of light finally enters the depth direction of the illumination device, ).

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.

1 is a schematic cross-sectional view showing a main part of a lighting apparatus according to an embodiment of the present invention.

1, a lighting apparatus according to an embodiment of the present invention includes a light emitting unit 130 that emits light, a light emitting unit 130 that is disposed in an optical path of light emitted from the light emitting unit 130, And a light guide member 140 for embedding the light-emitting unit 130 and the light-condition adjusting unit 150.

Particularly, the light shape adjusting unit 150 is disposed on the substrate 110 on which the light emitting unit 130 is mounted, and includes a partition wall 152 forming the cavity 151, The light emitted from the light emitting unit 130 is scattered, refracted, or straightened through the light adjustment unit 150 to finally control the formation of a three-dimensional effect of light emitted through the upper portion of the light guide member 140 . To this end, the optical shape adjusting unit 150 may further include a lens member 160 therein.

1, the optical shape adjusting unit 150 has a hollow portion 151 formed therein with an air pocket structure. For this purpose, the optical path shape adjusting unit 150 may be configured such that the partition wall portion 152 is hollow State structure, and can be formed in a closed structure of four sides. In particular, it is preferable that the light adjustment unit 150 can easily transmit the light emitted from the light emitting unit 130, and the light adjustment unit 150 can be formed of a resin material having a high light transmittance. For example, it may be made of a resin or glass such as a polymer material, and may be a gel, a thermoplastic polymer, or a photo-curable polymer. Such a material may be polycarbonate, polymethylmethacrylate, polystyrene, or polyethylene terephthalate, but is not limited thereto. In particular, the light-guiding member 150 and the light guide member 140 may be formed of the same material, but may be formed of different materials in order to vary the refractive index of the air layer with a difference in refractive index, This makes it possible to vary the range of light scattering or refraction.

The light emitting unit 130 is disposed on the substrate 110. In this case, the substrate 110 may include a printed circuit board on which an optical device such as an LED is mounted. In this case, A printed circuit board of a transparent material can be used in the present invention. In the case of the conventional lighting apparatus, it is opaque by using the FR4 printed circuit board, but the present invention It becomes possible to provide a transparent lighting device by using a transparent material, particularly a transparent PET printed circuit board. In addition, in the present invention, a flexible printed circuit board (FPCB) can be used to secure certain flexibility.

In the embodiment of the present invention, the light emitting unit 130 may be a side view type light emitting diode as an optical element. That is, a light emitting diode having a light exit surface 131 having a structure in which the direction of light to be emitted is not directed straight up directly but is emitted toward the side surface, can be used as the light source of the present invention. According to the illumination apparatus of the present invention, the light including the side-type light emitting diode is directly disposed, and the light guide member for realizing the light diffusion and reflection function is used to diffuse and induce light upward Thus, 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 formed on the upper surface of the substrate 110 and may include a light source 130. The reflective member 120 may be disposed between the substrate 110 and the light guide member 140, Is formed to pass through.

The reflective member 120 is formed of a material having a high reflection efficiency so that light emitted from the light source 130 is reflected to the upper portion of the optical guide member during or after passing through the optical shape adjusting unit 150, It plays a role. 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 upper portion of the optical guide member. 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 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 lenticular shape, a lens shape, But is not limited thereto. In addition, the cross-sectional shape of the reflection pattern may be a structure having various shapes such as a triangle, a quadrangle, a semicircle, and a sine wave.

In this case, the resin layer may be in contact with the surface of the light-emitting unit 130 or the light-shape adjusting unit 150 And is buried.

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 include monomers mixed with isobornyl acrylate (IBOA), hydroxypropyl acrylate, 2-hydroxyethyl acrylate (HPA) and the like, which are low boiling point diluent type reactive monomers, and 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.

FIGS. 2 to 7 illustrate embodiments different from the embodiments of the present invention described above, and are schematic diagrams of conceptualizing only the main components of a lighting apparatus.

FIG. 2 is a schematic view of the embodiment of FIG. 1, in particular, illustrating that the light emitting unit 130 is implemented in a structure disposed in a cavity inside the light adjustment unit 150. In such a structure, the light emitted from the light exit surface 131 of the light emitting unit 130 is directed to the lens member 160 while the directing angle of the light is adjusted. The refractive index of the air layer of the cavity 151 And the light travels to the light guide member 140 (X). The light proceeding to the light guide member is refracted and reflected by the light guide member and the reflecting member in the future, and the light is emitted to the upper portion of the light guide member.

In this case, a light image having a three-dimensional effect can be realized through an optical member (see FIG. 8) provided with an optical pattern in cooperation with the light guide member. In this case, Image) can be extended and implemented.

Particularly, the lens member 160 disposed inside the light-condition adjusting unit 150 has a convex lens surface adjacent to the light exit surface 131 of the light-emitting unit to adjust the light directing angle, It can be controlled by light.

FIG. 3 shows a structure in which the lens member is removed from the structure of FIG. 2 and only the optical shape adjusting unit 150 is provided. In this case, the straight light passes through the light X that is linearly and scattered toward the light- And the scattering property and diffusibility of light introduced into the light guide member can be increased, thereby realizing an advantage that the efficiency of surface light emission can be enhanced.

In addition, in the conventional lighting apparatus, a hot spot, which is a deterioration phenomenon of a light guide member occurring at a front portion of a light emitting surface due to a strong light amount of a light emitting element such as an LED, It can be removed at its source. Accordingly, the structure of the pattern for blocking the light for preventing hot spots in the related art becomes unnecessary, the structure is simplified, and the efficiency of the manufacturing process is improved.

FIG. 4 illustrates an embodiment in which the light emitting unit 130 is disposed inside the light condition adjusting unit 150, as in the structure of FIG. 2. The difference in the structure is that the lens member 161 is divided into the partition wall portion So that they are integrally formed. Such a structure can be realized by an injection process of the optical shape adjusting unit 150. Such a structure can increase manufacturing efficiency with a simpler structure and has an advantage of being realized with a highly reliable structure.

5, the light emitting unit 130 is disposed outside the light condition adjusting unit 150, unlike the structure of FIG. In such a structure, the light path is extended from the light exit surface 131 to the partition wall-> cavity-> lens member-> cavity-> partition wall-> light guide member, and the refractive index So that the effect of scattering and refraction can be realized.

As described above with reference to the structure of FIG. 6, the structure in which the structure of FIG. 5 is further simplified is a structure in which the lens member 162 is integrated with the partition wall, thereby achieving structural reliability.

In addition, FIG. 7 is a modification of FIG. 7, in which the position of the lens member is disposed in a unitary structure close to the light emitting unit 130 so that the control of the light shape can be controlled.

FIG. 8 illustrates an application example of implementing a stereoscopic image using the illumination device according to the embodiment of FIGS. 1 to 7. FIG.

The structure shown in FIG. 8 exemplifies the structure of FIG. 1, and particularly includes an optical member 170 in which a plurality of optical patterns 171 are provided between the light guide member 140 and the substrate 110 There are features. That is, the optical member 170 includes a plurality of optical patterns 171, and the plurality of patterns 171 have inclined surfaces. The inclined surfaces are mirror-finished surfaces having a smooth surface roughness of a predetermined level or more . In this embodiment, it is exemplified that the plurality of optical patterns 171 are arranged so as to be bonded to one surface of the reflecting member 120. [ In this case, the reflective member 120 is provided as a film-shaped reflective film on the arrangement surface of the optical pattern of the optical member 170. The reflector 120 is formed of a material having a high reflection efficiency to reflect light emitted from the light emitting unit 130 through the light emitting unit 130 to the optical pattern side to reduce light loss and to more clearly express the linear light having a stereoscopic effect do. Particularly, at the same time, the length and line width of the linear light having the stereoscopic effect described above can be made wider and longer by the optical shape adjusting unit 150 according to the embodiment of the present invention (see FIG. 9). 8, the optical member 170 may be disposed on the upper surface or the upper surface of the light guide member 140. In such a structure, The effect of the stereoscopic light can be realized through one optical shape adjusting unit, and control of its length, shape, line width, and the like can be realized.

9 and 10 are views showing a stereoscopic effect realizing a stereoscopic depth feeling in which an image of light finally enters the depth direction of the illuminating device of light emitted from the light emitting unit 130 through the light shape adjusting unit in the illuminating device according to the embodiment of the present invention Three-dimensional effect beam, that is, stereoscopic image BL.

In the illuminating device according to the embodiment of the present invention, the light emitted from the light emitting unit through the above-described optical shape adjusting unit can be downhill, refracted, and straightened so that the line width or line length of the above- , In particular by controlling the direction of light through the lens member, thereby controlling the extension of the overall stereoscopic image.

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.

110: substrate
120: reflective member
130: Light emitting unit
140: light guide member
150: optical shape adjustment unit
151: air pocket
152:
160: lens member
170: optical member
171: Optical pattern

Claims (12)

A light emitting unit for emitting light;
A light shaping unit disposed in an optical path of light emitted from the light emitting unit and having a cavity therein; And
A light guiding member for embedding the light emitting unit and the light shaping unit;
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The method according to claim 1,
Wherein the light-
And a partition wall portion disposed on the substrate on which the light emitting unit is mounted, the partition wall portion defining the cavity portion.
The method of claim 2,
The light-
And the illumination unit is accommodated in the cavity.
The method of claim 2,
The light-
And is disposed outside the partition wall portion.
The method according to claim 3 or 4,
Wherein the light-
And a lens unit that adjusts a directivity angle of light emitted from the light emitting unit to the cavity.
The method of claim 5,
The lens unit includes:
And is spaced apart from the partition wall portion.
The method of claim 5,
The lens unit includes:
And is integrally formed on an inner surface of the partition wall portion.
The method of claim 5,
The lens unit includes:
And a convex lens surface protruding in the direction of the light exit surface of the light emitting unit is provided.
The method according to any one of claims 1 to 4,
The illumination device includes:
Further comprising an optical member provided with a plurality of optical patterns.
The method of claim 9,
The optical member
And the light guide member is disposed between the substrate on which the light emitting unit is mounted and the light guide member.
The method of claim 10,
Wherein the optical member comprises:
As the distance from the light emitting unit increases, the optical path of the light passing through the optical pattern is sequentially lengthened,
And a three-dimensional effect beam on the thickness direction side of the base material.
A housing member;
An illumination device according to any one of claims 1 to 4 received in the housing member;
.

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