Lamp for vehicle

Abstract

A lamp for a vehicle includes: a plate portion; a light source part including a light source mounted on a front surface of the plate part; and an optical resin layer provided on the front surface of the plate portion, the optical resin layer covering the light source. The optical resin layer includes: an optical body; and a first total reflection optical element protruding from a surface of the optical body and integrally formed with the optical body, and the optical resin layer totally reflects the light emitted from the light source portion and guides the light to a front surface of the optical body. The lamp for a vehicle according to the present disclosure can improve luminous efficiency while ensuring uniformity, thereby achieving a high-brightness surface emission image.

Description

[0001] Cross-references to related applications

[0002] This application claims the benefit of priority to Korean Patent Application Nos. 10-2024-0002423 and 10-2024-0002426, filed with the Korean Intellectual Property Office on January 5, 2024, the entire contents of which are incorporated herein by reference for all purposes. Technical Field

[0003] This disclosure relates to a lamp for a vehicle. Background Technology

[0004] Vehicles are typically equipped with various types of lights that provide illumination for easy identification of objects around the vehicle during nighttime driving, as well as signaling to other vehicles or road users to indicate the vehicle's driving status.

[0005] Recently, various forms of vehicle lights are being developed to enhance the aesthetics of vehicle exteriors, based on the needs of users who value design. In particular, vehicle lights are employing a technology under development that utilizes an optical system to achieve surface-emitting illumination images by applying designed patterns.

[0006] However, due to the low light transmittance of the design patterns traditionally used in optical systems for achieving surface-emitting illumination images, they are only used in some lamps, such as taillights. Furthermore, optical systems for achieving surface-emitting illumination images are traditionally space-constrained and costly because they require the addition of separate lenses or structures (such as Fresnel lenses) to improve uniformity.

[0007] Therefore, it is necessary to develop a surface-emitting optical system that can ensure brightness and improve uniformity without problems when realizing the functions of various types of lamps, and is also cost-effective. Utility Model Content

[0008] This disclosure is intended to address the aforementioned problems in the prior art while maintaining the advantages achieved by the prior art.

[0009] One aspect of this disclosure provides a lamp for a vehicle that can improve luminous efficiency while ensuring uniformity, thereby achieving a high-brightness surface emission image.

[0010] Another aspect of this disclosure provides a lamp for a vehicle that does not require additional processing or a separate lens to achieve a uniform surface emission image, thus having less space constraints and being cost-effective.

[0011] The technical problem to be solved by the present disclosure is not limited to the above-mentioned problem, and any other technical problem not mentioned herein will be clearly understood by those skilled in the art from the following description.

[0012] In general aspects of the present disclosure, a lamp for a vehicle includes a plate portion, a light source portion including a plurality of light sources mounted on a front surface of the plate portion, and an optical resin layer disposed on the front surface of the plate portion, the optical resin layer being configured to cover the plurality of light sources, wherein the optical resin layer includes an optical body, and a plurality of first total reflection optical elements protruding from a surface of the optical body and integrally formed with the optical body, and wherein the optical resin layer is configured to totally reflect light emitted from the light source portion and guide the light to a front surface of the optical body.

[0013] A direction facing the optical resin layer from the plate portion is defined as a first direction, a direction perpendicular to the first direction and in which the optical resin layer extends can be defined as a second direction, and a direction perpendicular to the first direction and the second direction can be defined as a third direction, wherein the optical body can include a front surface which is a surface facing the first direction, a rear surface which is a surface facing the plate portion, and a side surface disposed between the front surface and the rear surface, wherein the first total reflection optical elements can include a plurality of front total reflection optical elements formed on the front surface of the optical body, and the plurality of front total reflection optical elements are formed to extend in the second direction or the third direction, and wherein the plurality of front total reflection optical elements can be arranged in a direction crossing the extension direction of the front total reflection optical elements.

[0014] The first total reflection optical elements can further include a plurality of side total reflection optical elements formed on the side surface of the optical body, the first total reflection optical elements being formed to extend in the first direction or the second direction, wherein the plurality of side total reflection optical elements can be arranged in a direction crossing the extension direction of the side total reflection optical elements.

[0015] A cross-sectional shape of the first total reflection optical elements in a direction perpendicular to the extension direction of the first total reflection optical elements can be formed in an arc shape or a polygonal shape.

[0016] The lamp can further include an outer lens member disposed on the front surface of the optical resin layer, wherein the outer lens member can include a lens body configured such that at least a partial region of the optical body in the first direction is accommodated in the lens body, and an accommodation space opened toward the plate portion is formed in the lens body, and a fixing portion formed in the lens body and configured to be fitted with the optical resin layer, wherein the optical resin layer can further include a fitting portion configured to correspond to the fixing portion.

[0017] The assembly portion can include a recessed assembly groove formed on a side surface of the optical body, and the fixing portion can include a fixing boss formed at a rear end of the lens body and protruding toward the accommodation space to be inserted into the assembly groove.

[0018] The assembly portion can include an assembly boss protruding from a side surface of the optical body, and the fixing portion can include a stop boss formed to be stopped by the assembly boss to prevent the outer lens piece from deviating from the optical resin layer in the first direction.

[0019] The outer lens piece can include a plurality of second total reflection optical elements integrally formed with at least one of the front surface and the side surface of the lens body, and the outer lens piece can be configured to guide light emitted from the optical resin layer by internal total reflection.

[0020] The second total reflection optical elements can extend in a direction crossing a direction in which the first total reflection optical elements extend, and the plurality of second total reflection optical elements can be arranged to be spaced apart from each other in a direction crossing a direction in which the second total reflection optical elements extend.

[0021] In another general aspect of the disclosure, a lamp for a vehicle includes a plate portion, a light source portion including a plurality of light sources mounted on a front surface of the plate portion, and an optical resin layer disposed on the front surface of the plate portion, the optical resin layer configured to cover the plurality of light sources, wherein the plate portion includes a plurality of reflection bosses protruding from the front surface thereof to reflect light emitted from the light source portion forward.

[0022] The optical resin layer can include an optical body, a light source accommodation portion formed in the optical body to accommodate the plurality of light sources, and a plurality of boss accommodation portions formed to correspond to the reflection bosses and formed in the optical body to accommodate the plurality of reflection bosses.

[0023] The reflection bosses can be formed in a convex curved shape or a polygonal column shape.

[0024] Each of the reflection bosses can include a reflection surface formed to face the light source portion, the reflection boss being configured to reflect light emitted from the light source portion, and an inclined surface disposed in a direction opposite to a direction in which the reflection surface faces the light source portion.

[0025] The plate portion can further include a printed layer formed by printing a reflection material on a surface of the reflection boss.

[0026] The optical resin layer can include an optical body, and a plurality of air gaps formed in an interior of the optical body, and wherein the plurality of air gaps are configured to guide light that has reached the air gaps by internal total reflection.

[0027] When a direction facing the optical resin layer from the plate portion is defined as a first direction, and a direction perpendicular to the first direction and in which the optical resin layer extends is defined as a second direction, the air gap can be formed such that a width in the second direction is greater than a width in the first direction, wherein a cross-sectional shape of the air gap in a direction perpendicular to the second direction can be formed in a circular shape or a polygonal shape.

[0028] The lamp can further include an outer lens member fitted on a front surface of the optical resin layer, the outer lens member including an accommodation space accommodating the optical body, wherein the optical body can include a first region accommodated in the accommodation space, and a second region disposed outside the accommodation space, wherein the air gap can be formed in the second region.

[0029] The optical resin layer can include an optical body, and a plurality of total reflection optical elements protruding from a surface of the optical body, the plurality of total reflection optical elements being integrally formed with the optical body, wherein the total reflection optical elements can be configured to guide light emitted from a light source portion in the optical body by internal total reflection.

[0030] When a direction facing the optical resin layer from the plate portion is defined as a first direction, a direction perpendicular to the first direction and in which the optical resin layer extends can be defined as a second direction, and a direction perpendicular to the first direction and the second direction can be defined as a third direction, the optical body can include a front surface which is a surface facing the first direction, a rear surface which is a surface facing the plate portion, and a side surface disposed between the front surface and the rear surface, wherein the total reflection optical elements can include a plurality of front total reflection optical elements formed on the front surface of the optical body, the plurality of front total reflection optical elements being formed to extend in the second direction or the third direction, and wherein the plurality of front total reflection optical elements can be arranged to be spaced apart from each other in a direction crossing an extension direction of the front total reflection optical elements.

[0031] The plurality of side total reflection optical elements can be spaced apart from each other. BRIEF DESCRIPTION OF DRAWINGS

[0032] The above and other objects, features and advantages of the present disclosure will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings:

[0033] Figure 1 FIG. 1 is a perspective view illustrating a lamp for a vehicle according to a first embodiment of the present disclosure;

[0034] Figure 2 FIG. 2 is a sectional view illustrating a section of the lamp for a vehicle according to the first embodiment of the present disclosure;

[0035] Figure 3 FIG. 3 is a front view illustrating a front surface of a plate portion according to the first embodiment of the present disclosure;

[0036] Figure 4 is a front view showing a front surface of an optical resin layer according to the first embodiment of the present disclosure;

[0037] Figure 5 is a side view showing a side surface of the optical resin layer according to the first embodiment of the present disclosure;

[0038] Figure 6 is a sectional view showing a lamp for a vehicle according to the second embodiment of the present disclosure;

[0039] Figure 7 shows a lamp for a vehicle according to the second embodiment of the present disclosure, and is a plan view showing an upper surface of Figure 6

[0040] Figure 8 is a view showing a side surface of the optical resin layer shown in

[0041] Figure 9 is a plan view showing an upper surface of the optical resin layer shown in Figure 8

[0042] Figure 10 shows an outer lens member according to the second embodiment of the present disclosure, and is a front view showing a front surface of the outer lens member;

[0043] Figure 11 shows an outer lens member according to the second embodiment of the present disclosure, and is a side view showing a side surface of the outer lens member;

[0044] Figure 12 is a view showing a part of an upper surface of the outer lens member shown in Figure 11

[0045] Figure 13 is a modified view showing a lamp for a vehicle according to the second embodiment of the present disclosure, and is an enlarged sectional view showing the fitting portion and the fixing portion;

[0046] Figure 14 is a perspective view showing a lamp for a vehicle according to the third embodiment of the present disclosure;

[0047] Figure 15 is a sectional view showing a section of a lamp for a vehicle according to the third embodiment of the present disclosure;

[0048] Figure 16 is a front view showing a front surface of a plate portion according to the third embodiment of the present disclosure;

[0049] Figure 17 ​​​is a cross-sectional view showing a side cross section of a plate portion according to the third embodiment of the present disclosure;

[0050] Figure 18 is a front view showing a front surface of an optical resin layer according to the third embodiment of the present disclosure;

[0051] Figure 19 is a cross-sectional view showing a cross section of an optical resin layer according to the third embodiment of the present disclosure;

[0052] Figure 20 is a front view showing a front surface of an outer lens member according to the third embodiment of the present disclosure;

[0053] Figure 21 is a side view showing a side surface of an outer lens member according to the third embodiment of the present disclosure;

[0054] Figure 22 is a front view showing a front surface of an optical resin layer according to the fourth embodiment of the present disclosure; and

[0055] Figure 23 is a side view showing a side surface of an optical resin layer according to the fourth embodiment of the present disclosure. DETAILED DESCRIPTION

[0056] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0057] First, the embodiments described below are suitable embodiments for understanding technical features of the lamp for a vehicle of the present disclosure. However, the present disclosure is not limited to the embodiments described below, or technical features of the present disclosure are limited by the described embodiments, and various modifications can be implemented within the technical scope of the present disclosure.

[0058] First Embodiment

[0059] Figure 1 is a perspective view showing a lamp for a vehicle according to the first embodiment of the present disclosure; Figure 2 is a cross-sectional view showing a cross section of a lamp for a vehicle according to the first embodiment of the present disclosure; Figure 3 is a front view showing a front surface of a plate portion according to the first embodiment of the present disclosure; Figure 4 is a front view showing a front surface of an optical resin layer according to the first embodiment of the present disclosure; and Figure 5 is a side view showing a side surface of an optical resin layer according to the first embodiment of the present disclosure.

[0060] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Figures 1 to 5 The configuration of the first embodiment of the present disclosure will be described in detail.

[0061] Referring to Figures 1 to 13 A lamp 10 for a vehicle according to an embodiment of the disclosure includes a board portion 100, a light source portion, and an optical resin layer 300.

[0062] Hereinafter, for convenience of description, a direction in which the board portion 100 faces the optical resin layer 300 is defined as a first direction D1, a direction perpendicular to the first direction D1 and in which the optical resin layer 300 extends is defined as a second direction D2, and a direction perpendicular to the first direction D1 and the second direction D2 is defined as a third direction D3. Referring to Figure 1 the drawings shown in FIG. 1, the first direction D1 can be a forward direction of the lamp 10 for a vehicle, the second direction D2 can be a left / right direction, and the third direction D3 can be an up / down direction. However, depending on the installation of the lamp 10 for a vehicle, the first direction D1 can not coincide with the traveling direction of the vehicle, and the second direction D2 and the third direction D3 can not coincide with the left / right direction and the up / down direction of the vehicle.

[0063] The board portion 100 can be formed to extend in one direction. For example, the board portion 100 can extend in the second direction D2, and can be a printed circuit board (PCB).

[0064] The light source portion includes a plurality of light sources 200 mounted on a front surface of the board portion 100.

[0065] Specifically, the light source 200 is a component that generates and emits light, and various elements or devices that can emit light can be used. For example, the light source 200 can be a light emitting diode (LED).

[0066] The plurality of light sources 200 can be mounted on the front surface of the board portion 100 to be spaced apart from each other along the second direction D2. However, the arrangement of the plurality of light sources 200 is not limited thereto, and can be variously changed depending on the design specification of the lamp 10 for a vehicle.

[0067] The optical resin layer 300 is disposed on the front surface of the board portion 100, and is configured to cover the plurality of light sources 200.

[0068] Specifically, the optical resin layer 300 can be a configuration for protecting the light source portion from external impact and also ensuring uniformity of light emitted from the plurality of light sources 200. In addition, the optical resin layer 300 can function as a light guide member that guides light emitted from the plurality of light sources 200 so that the light is emitted forward.

[0069] For example, the optical resin layer 300 can include a silicone resin composition. Specifically, the optical resin layer 300 can be formed by molding a silicone resin. Accordingly, the optical resin layer 300 can have excellent heat resistance, chemical resistance, and mechanical properties.

[0070] The optical resin layer 300 includes an optical body 310 and first total reflection optical elements 320.

[0071] The optical body 310 forms a main body of the optical resin layer 300, and light emitted from the light source 200 can be input thereto. A surface of the optical body 310 can include a front surface facing the first direction D1, a rear surface facing the plate portion 100, and a side surface between the front surface and the rear surface. The optical body 310 can extend in the second direction D2 to correspond to the plate portion 100.

[0072] Further, a light source accommodation portion 311 in which the light source 200 is accommodated can be formed in the optical body 310. The number and positions of the light source accommodation portion 311 can be formed to correspond to the number and positions of the light source 200.

[0073] The first total reflection optical elements 320 protrude from a surface of the optical body 310 and are integrally formed with the optical body 310, and the first total reflection optical elements 320 are configured to totally reflect light emitted from the light source portion to guide the light to the front surface of the optical body 310, and are provided as a plurality.

[0074] The first total reflection optical elements 320 are members formed on a surface of the optical body 310 to increase optical efficiency of the lamp 10 for a vehicle by internal total reflection and to achieve a uniform surface light emission image. Specifically, the first total reflection optical elements 320 can be formed on a surface of the optical body 310, and can be formed on at least a front surface among the surfaces.

[0075] Light input to the optical body 310 and reaching the first total reflection optical elements 320 can be reflected into the optical body 310 by internal total reflection, and can be guided forward or guided forward by re-reflection, such that light is emitted forward. Accordingly, according to the present disclosure, optical efficiency can be increased, and thus a high-brightness surface emission image can be achieved.

[0076] Further, the first total reflection optical elements 320 according to the embodiment of the present disclosure can be integrally formed with the optical body 310. Specifically, in the embodiment of the present disclosure, when the optical body 310 is manufactured, the first total reflection optical elements 320 are formed on a surface of the optical body 310 as previously designed, such that the optical body 310 and the first total reflection optical elements 320 can be integrally formed.

[0077] In the embodiments of the disclosure, since the first total reflection optical element 320 is integrally formed with the optical body 310, an additional process or a separate lens can not be required to achieve uniform surface light emission.

[0078] In this way, according to the embodiments of the disclosure, the first total reflection optical element 320 is integrally formed on the surface of the optical body 310, so that optical efficiency and optical uniformity can be improved, and thus a high-brightness surface light emission image can be achieved.

[0079] In addition, according to the embodiments of the disclosure, since the first total reflection optical element 320 has an integrated structure with the optical body 310, an additional process or a separate lens is not required, thereby improving productivity and being advantageous in terms of cost.

[0080] The first total reflection optical element 320 can be formed on a front surface or a side surface of the optical body 310.

[0081] In particular, referring to the embodiments shown in Figures 1 to 5 , the first total reflection optical element 320 can include a front total reflection optical element 321.

[0082] The front total reflection optical element 321 can be formed on a front surface of the optical body 310, and can be formed to extend in a second direction D2 or a third direction D3. In addition, a plurality of front total reflection optical elements 321 can be provided, and the plurality of front total reflection optical elements 321 can be arranged to be spaced apart from each other in a direction crossing the extension direction of the plurality of front total reflection optical elements 321.

[0083] For example, as in the embodiments shown in Figure 2 , Figure 4 , and Figure 5 , the front total reflection optical element 321 can be formed to extend in the second direction D2. The plurality of front total reflection optical elements 321 can be arranged to be spaced apart from each other in the third direction D3, which is a direction crossing the second direction D2.

[0084] However, the extension direction and the arrangement direction of the front total reflection optical element 321 are not limited to the above description, and can be formed in various directions. For example, the front total reflection optical element 321 can extend in the third direction D3, and the plurality of front total reflection optical elements 321 can be arranged to be spaced apart from each other in the second direction D2. In addition, the front total reflection optical element 321 can be formed to extend in a direction other than the second direction D2 or the third direction D3.

[0085] As described above, in the embodiments of the disclosure, the plurality of front total reflection optical elements 321 are continuously arranged in one direction so that light can cause a plurality of internal total reflections in the optical body 310, and thus the optical uniformity can be further improved.

[0086] Meanwhile, referring to the embodiments shown in FIGS. 1 to 3, Figures 6 to 9 the first total reflection optical element 320 can include a side total reflection optical element 322.

[0087] The side total reflection optical element 322 can be formed on a side surface of the optical body 310, and can be formed to extend in the first direction D1 or the second direction D2. Further, a plurality of side total reflection optical elements 322 can be provided, and the plurality of side total reflection optical elements 322 can be arranged to be spaced apart from each other to cross the extension directions of the plurality of side total reflection optical elements 322.

[0088] For example, the side total reflection optical element 322 can be formed on one side and the opposite side of the optical body 310 in the third direction D3. Further, the side total reflection optical element 322 can be formed to extend in the first direction D1, and a plurality of side total reflection optical elements 322 can be arranged to be spaced apart from each other along the second direction D2, which is a direction crossing the extension direction.

[0089] In other words, referring to FIGS. 1 to 3, Figure 5 and Figure 8 the side total reflection optical element 322 can protrude from the upper surface and the lower surface of the optical body 310. The side total reflection optical element 322 can extend in the front / rear direction, and a plurality of side total reflection optical elements 322 can be repeatedly arranged to be spaced apart from each other in the left / right direction.

[0090] Accordingly, the side total reflection optical element 322 can be formed to extend in a different direction (e.g., a crossing direction) from the front total reflection optical element 321, and can be arranged in a different direction. Accordingly, even when light is emitted at various angles from the light source portion, total reflection can be induced inside the optical resin layer 300.

[0091] Then, while the plurality of side total reflection optical elements 322 are formed at regular intervals, the plurality of side total reflection optical elements 322 can be repeatedly arranged in the same shape. Accordingly, the optical uniformity of the lamp for a vehicle can be further improved.

[0092] The optical resin layer 300 according to the embodiments of the disclosure includes the side total reflection optical element 322 in addition to the front total reflection optical element 321, and the side total reflection optical element 322 can be arranged in a different direction from the front total reflection optical element 321, whereby the optical uniformity and the optical efficiency of the lamp 10 for a vehicle can be further improved.

[0093] Meanwhile, as described above, the first total reflection optical element 320 can be formed in a bar shape extending in the first direction D1 or the second direction D2. That is, the first total reflection optical element 320 can be formed to have the same cross-section along the extension direction.

[0094] In the first total reflection optical element 320, a cross-sectional shape in a direction perpendicular to the extension direction of the first total reflection optical element 320 can be formed in an arc shape or a polygonal shape.

[0095] For example, referring to Figure 2 , Figure 5 , Figure 6 and Figure 8 , in the front total reflection optical element 321, a cross-sectional shape in a direction perpendicular to the second direction D2 (i.e., the extension direction) can be formed in a trapezoidal shape. Also, a plurality of front total reflection optical elements 321 can be formed in the same cross-sectional shape.

[0096] Also, for example, referring to Figure 6 , Figure 7 and Figure 9 , in the side total reflection optical element 322, a cross-sectional shape in a direction perpendicular to the first direction D1 can be formed in an arc shape or a semicircular shape. Also, a plurality of side total reflection optical elements 322 can be formed in the same cross-sectional shape.

[0097] In this way, the plurality of side total reflection optical elements 322 and the plurality of front total reflection optical elements 321 are formed in a bar shape extending in one direction, are disposed in plurality, and are formed in the same shape, whereby uniformity can be ensured and optical efficiency can be improved compared to when formed in a matrix type or a non-uniform shape.

[0098] However, the shapes of the front total reflection optical element 321 and the side total reflection optical element 322 are not limited to the illustrated embodiments, and can be modified in various shapes as long as they can be formed in a bar shape.

[0099] Meanwhile, the embodiments of the present disclosure can further include an outer lens member 400 disposed on the front surface of the optical resin layer 300.

[0100] The outer lens member 400 can include a lens body 410 and a fixing part 430.

[0101] The lens body 410 defines a main body of the outer lens member 400, and can form an accommodation space 411 in which at least a partial area of the optical body 310 in the first direction D1 can be accommodated, and the accommodation space 411 is open toward the plate part 100.

[0102] The optical resin layer 300 can be entirely accommodated in the accommodation space 411 of the lens body 410, or a partial region of a front surface including the optical resin layer 300 can be accommodated therein. In the illustrated embodiment, a partial region of the optical resin layer 300 can be covered by the lens body 410. When a partial region of the optical resin layer 300 is accommodated in the lens body 410, the optical resin layer 300 can include a first region "I" that is accommodated in the accommodation space 411 and a second region II that is disposed outside the accommodation space 411.

[0103] The fixing portion 430 can be formed in the lens body 410 and can be formed to be fitted with the optical resin layer 300. Also, the optical resin layer 300 can further include a fitting portion 330 configured to correspond to the fixing portion 430. Here, the shape and fitting method of the fixing portion 430 and the fitting portion 330 are not limited, and various methods can be applied as long as the optical resin layer 300 and the outer lens member 400 can be fitted.

[0104] For example, the fixing portion 430 and the fitting portion 330 can be formed at a point at which the first region "I" and the second region II meet each other. However, the positions of the fixing portion 430 and the fitting portion 330 are not limited thereto.

[0105] In Figure 2 and Figures 5 to 9 , one example of the fitting portion 330 and the fixing portion 430 according to the disclosure is illustrated, and in Figure 13 , another example of the fitting portion 330 and the fixing portion 430 according to the disclosure is illustrated. However, the fixing portion 430 and the fitting portion 330 are not limited to examples different from the illustrated examples.

[0106] Referring to Figure 2 and Figures 5 to 9 , the fitting portion 330 can include a fitting groove 331 to be recessed on a side surface of the optical body 310.

[0107] Also, the fixing portion 430 can include a fixing boss 431 formed at a rear end of the lens body 410 and protruding toward the accommodation space 411 to be inserted into the fitting groove 331.

[0108] Specifically, in the fitting process, when the fixing boss 431 is inserted into the fitting groove 331, the optical resin layer 300 and the outer lens member 400 can be fitted. The fixing boss 431 can be continuously formed along a circumference of the opening of the lens body 410 and can protrude toward the accommodation space 411. Also, the fitting groove 331 can be recessed at a circumference of the side surface of the optical body 310 to correspond to the shape of the fixing boss 431.

[0109] Meanwhile, referring to Figure 13The assembly portion 330 can include an assembly boss 333 protruding from a side surface of the optical body 310.

[0110] Further, the fixing portion 430 can include a stop boss 433 formed to be stopped by the assembly boss 333 to prevent the outer lens piece 400 from deviating from the optical resin layer 300 in the first direction D1.

[0111] Specifically, the assembly boss 333 can be continuously formed along a circumference of the opening of the lens body 410, and can protrude toward the accommodation space 411. Further, the stop boss 433 can be formed at a position corresponding to that of the fixing boss 431, and can be formed to protrude along a circumference of the side surface of the optical body 310. The fixing boss 431 and the stop boss 433 can be continuously formed, but can be intermittently formed as long as they are formed at the corresponding positions.

[0112] When the optical resin layer 300 and the outer lens piece 400 are assembled, the opening of the lens body 410 is elastically widened, and thus the stop boss 433 moves to a rear side of the assembly boss 333, and when the stop boss 433 is located at the rear side of the assembly boss 333, the opening of the lens body 410 returns to its initial state, and the stop boss 433 is stopped by the assembly boss 333. Accordingly, the outer lens piece 400 can not be separated from the optical resin layer 300.

[0113] The assembly performance of the optical resin layer 300 and the outer lens piece 400 can be improved by the configuration of the assembly portion 330 and the fixing portion 430.

[0114] Second Embodiment

[0115] Figure 6 is a sectional view illustrating a lamp for a vehicle according to a second embodiment of the disclosure; Figure 7 illustrates a lamp for a vehicle according to a second embodiment of the disclosure, and is a plan view illustrating an upper surface of Figure 6 ; Figure 8 is a view illustrating a side surface of an optical resin layer according to a second embodiment of the disclosure; Figure 9 is a plan view illustrating an upper surface of the optical resin layer illustrated in Figure 8 ; Figure 10 illustrates an outer lens piece according to a second embodiment of the disclosure, and is a front view illustrating a front surface of the outer lens piece; Figure 11 illustrates an outer lens piece according to a second embodiment of the disclosure, and is a side view illustrating a side surface of the outer lens piece; Figure 12 is a view illustrating a portion of an upper surface of the outer lens piece illustrated in Figure 11 ; and Figure 13is a view showing a modification of the lamp for a vehicle according to the second embodiment of the present disclosure, and is an enlarged sectional view showing the fitting portion and the fixing portion.

[0116] Figures 6 to 12 The second embodiment of the present disclosure shown in Figures 1 to 5 The second embodiment of the present disclosure shown in differs from the first embodiment of the present disclosure shown in that the first total reflection optical element 320 further includes a side total reflection optical element 322, and the outer lens member 400 further includes a second total reflection optical element 420. Figure 13 The modification of the present disclosure shown in shows a modification of the fitting portion 330 and the fixing portion 430 of the first embodiment and the second embodiment of the present disclosure.

[0117] In addition to these differences, the second embodiment of the present disclosure and the modification of the first embodiment of the present disclosure can include all the configurations of the first embodiment of the present disclosure.

[0118] Meanwhile, according to the second embodiment of the present disclosure shown in Figures 6 to 12 The second embodiment of the present disclosure shown in, the outer lens member 400 can further include a second total reflection optical element 420.

[0119] The second total reflection optical element 420 can be integrally formed on at least one of the front surface 412 and the side surface 413 of the lens body 410, and can be provided in plural. The second total reflection optical element 420 can be provided to guide light emitted from the optical resin layer 300 by internal total reflection.

[0120] Specifically, the second total reflection optical element 420 is a configuration to improve optical efficiency and uniformity by guiding light by internal total reflection together with the first total reflection optical element 320 formed in the optical resin layer 300. Most of light emitted from the light source portion and input to the optical resin layer 300 can be output forward by direct light or internal total reflection. In addition, some light input to the optical resin layer 300 can pass through the optical resin layer 300 and reach the outer lens member 400.

[0121] The second total reflection optical element 420 provided in the outer lens member 400 can guide light input from the optical resin layer 300 forward by internal total reflection. Therefore, it is possible to improve the optical efficiency of the lamp 10 for a vehicle.

[0122] The lens body 410 can include a front surface 412 and a plurality of side surfaces 413. The second total reflection optical element 420 can be formed on the front surface 412 or the side surface 413 of the lens body 410, or can be formed on both the front surface 412 and the side surface 413. For example, as in the illustrated embodiment, the second total reflection optical element 420 can be formed on the side surface 413 of the lens body 410, i.e., on one surface and an opposite surface in the third direction D3. However, the position of the second total reflection optical element 420 is not limited thereto, and can also be formed on the front surface 412 of the lens body 410.

[0123] For example, the second total reflection optical element 420 can extend in a direction that crosses the direction in which the first total reflection optical element 320 extends. Further, a plurality of second total reflection optical elements 420 can be provided, and the plurality of second total reflection optical elements 420 can be arranged to be spaced apart from each other in a direction that crosses the direction in which the second total reflection optical element 420 extends.

[0124] For example, as in the illustrated embodiment, when the second total reflection optical element 420 is formed on the upper surface and the lower surface of the lens body 410, and in the first total reflection optical element 320, the side total reflection optical element 322 formed on the upper surface and the lower surface of the optical body 310 extends in the first direction D1, the second total reflection optical element 420 can be formed to extend in the second direction D2. Further, in this case, a plurality of second total reflection optical elements 420 can be arranged to be spaced apart from each other in a direction (e.g., the first direction D1) that crosses the second direction D2.

[0125] In this way, because the extending direction and the arrangement direction of the second total reflection optical element 420 are formed at a position that crosses the extending direction and the arrangement direction of the first total reflection optical element 320 formed at the overlapping position, light emitted in each direction can be guided forward by internal total reflection. Therefore, when the second total reflection optical element 420 is formed in the outer lens piece 400 as in the second embodiment of the present disclosure, compared to the first embodiment of the present disclosure in which only the first total reflection optical element 320 is formed in the optical resin layer 300, the optical efficiency and the optical uniformity can be further improved.

[0126] Third Embodiment

[0127] Meanwhile, in Figures 14 to 21 , a third embodiment of the present disclosure is illustrated.

[0128] Figure 14 is a perspective view illustrating a lamp for a vehicle according to the third embodiment of the present disclosure; Figure 15is a cross-sectional view showing a cross section of a lamp for a vehicle according to a third embodiment of the present disclosure; Figure 16 is a front view showing a front surface of a plate portion according to the third embodiment of the present disclosure; Figure 17 is a cross-sectional view showing a side cross section of the plate portion according to the third embodiment of the present disclosure; Figure 18 is a front view showing a front surface of an optical resin layer according to the third embodiment of the present disclosure; Figure 19 is a cross-sectional view showing a cross section of the optical resin layer according to the third embodiment of the present disclosure;

[0129] Figure 20 is a front view showing a front surface of an outer lens member according to the third embodiment of the present disclosure; and Figure 21 is a side view showing a side surface of the outer lens member according to the third embodiment of the present disclosure.

[0130] Referring to Figures 14 to 21 , a lamp 10’ for a vehicle according to an embodiment of the present disclosure includes a plate portion 100’, a light source portion, and an optical resin layer 300’.

[0131] Hereinafter, for convenience of description, a direction in which the plate portion 100’ faces the optical resin layer 300’ is defined as a first direction D1’, a direction perpendicular to the first direction D1’ and in which the optical resin layer 300’ extends is defined as a second direction D2’, and a direction perpendicular to the first direction D1’ and the second direction D2’ is defined as a third direction D3’. Referring to Figure 14 the drawings shown in FIG. 1, the first direction D1’ can be a forward direction of the lamp 10’ for a vehicle, the second direction D2’ can be a left / right direction, and the third direction D3’ can be an up / down direction. However, depending on the installation of the lamp 10’ for a vehicle, the first direction D1’ can not coincide with a traveling direction of the vehicle, and the second direction D2’ and the third direction D3’ can not coincide with a left / right direction and an up / down direction of the vehicle.

[0132] The plate portion 100’ can be formed to extend in one direction. For example, the plate portion 100’ can extend in the second direction D2’, and can be a printed circuit board (PCB).

[0133] The light source portion includes a plurality of light sources 200’ mounted on a front surface of the plate portion 100’.

[0134] Specifically, the light source 200’ is a component that generates and emits light, and various elements or devices that can emit light can be used. For example, the light source 200 can be a light emitting diode (LED).

[0135] A plurality of light sources 200' can be mounted on the front surface of the plate portion 100' to be spaced apart from each other along the second direction D2'. However, the arrangement of the plurality of light sources 200' is not limited thereto and can be variously changed according to a design specification for the lamp 10' for a vehicle.

[0136] An optical resin layer 300' is disposed on the front surface of the plate portion 100' and is configured to cover the plurality of light sources 200'.

[0137] Specifically, the optical resin layer 300' can be a configuration for protecting the light source portion from external impact and also ensuring uniformity of light emitted from the plurality of light sources 200'. Further, the optical resin layer 300' can serve as a light guide member that guides light emitted from the plurality of light sources 200' so that the light is emitted forward.

[0138] For example, the optical resin layer 300' can include a silicone resin composition. Specifically, the optical resin layer 300' can be formed by molding a silicone resin. Accordingly, the optical resin layer 300' can have excellent heat resistance, chemical resistance, and mechanical properties.

[0139] The optical resin layer 300' can include an optical body 310'. The optical body 310' forms a main body of the optical resin layer 300' and light emitted from the light source 200' can be input thereto. A surface of the optical body 310' can include a front surface facing the first direction D1', a rear surface facing the plate portion 100', and a side surface between the front surface and the rear surface. The optical body 310' can extend in the second direction D2' to correspond to the plate portion 100'.

[0140] A light source accommodation portion 311' in which the light source 200' is accommodated can be formed in the optical body 310'. The number and positions of the light source accommodation portions 311' can be formed to correspond to the number and positions of the light sources 200'.

[0141] Meanwhile, referring to Figures 15 to 17 , the plate portion 100' can include a plate 110' and a reflection boss 130'. The reflection boss 130' can protrude from the front surface of the plate 110' and can be provided in plurality to reflect light emitted from the light source portion forward.

[0142] Specifically, the reflection boss 130' can be formed in various shapes on the front surface of the plate portion 100'. For example, the reflection boss 130' can be formed by pressing the plate 110' to provide an appearance for the plate 110'. The reflection boss 130' can be manufactured to protrude from the front surface when pressed in a direction facing from the rear surface of the plate 110' toward the front surface.

[0143] However, the method of forming the reflection protrusions 130' is not limited to press molding, and various methods can be applied as long as the reflection protrusions 130' can be formed on the front surface of the plate 110'.

[0144] Light emitted from the light source, or light emitted from the light source, propagating forward, and then being reflected back to the rear side, can reach the reflection protrusions 130', thereby causing scattering, and thus the light can be reflected forward again. In this way, the reflection protrusions 130' can improve the optical efficiency of the lamp for a vehicle by reflecting light that has propagated backward or light that has been reflected backward to the front side.

[0145] In addition, a plurality of reflection protrusions 130' can be provided to further increase scattering of light, and thus, optical uniformity can be increased.

[0146] Therefore, according to the embodiment of the disclosure, since the optical efficiency can be increased and the light uniformity can also be improved, a high-brightness surface-emitting illumination image can be implemented in the lamp for a vehicle.

[0147] In addition, according to the embodiment of the disclosure, since the reflection protrusions 130' are formed as an integral structure by press molding when the plate portion 100' is manufactured, no additional process or separate lens is required, thereby improving productivity and being advantageous in terms of cost.

[0148] Meanwhile, the optical resin layer 300' can further include a protrusion accommodation portion 313'. The protrusion accommodation portion 313' can be formed to correspond to the reflection protrusion 130', and can be formed in a plurality on the optical main body 310' to accommodate a plurality of reflection protrusions 130'.

[0149] Here, the position, shape, and number of the protrusion accommodation portion 313' can be formed to correspond to the position, shape, and number of the reflection protrusion 130'. By forming the protrusion accommodation portion 313' in the optical resin layer 300', the plate 110' and the reflection protrusion 130' of the plate 110' can be protected.

[0150] Meanwhile, the reflection protrusion 130' can be formed in a convex curved shape or a polygonal column shape.

[0151] In addition, for example, the width of the reflection protrusion 130' in the second direction can be greater than the width in the third direction. That is, the reflection protrusion 130' can be formed to extend longer in the second direction. More specifically, the cross-sectional shape of the reflection protrusion 130' in a direction perpendicular to the second direction can be formed in an arc shape or a polygonal shape.

[0152] In the illustrated embodiment, it is shown that the cross-sectional shape of the reflection protrusion 130' is a triangular shape. Here, the cross-sectional shape of the reflection protrusion 130' can be formed in the same shape along the second direction. However, the shape of the reflection protrusion 130' is not limited to the illustrated embodiment. For example, the cross-section of the reflection protrusion 130' in a direction perpendicular to the second direction can form various shapes such as an arc shape, a rectangular shape, etc.

[0153] Further, referring to Figure 17 , the cross-sectional shape of the reflection protrusion 130' in a direction perpendicular to the second direction can be formed in a triangular shape, and the reflection protrusion 130' can include a reflection surface 131' and an inclined surface 132'.

[0154] The reflection surface 131' can be formed to face the light source portion, and can be configured to reflect light emitted from the light source portion. Further, the inclined surface 132' can be disposed in a direction opposite to the direction in which the reflection surface 131' faces the light source portion.

[0155] Specifically, among the protruding surfaces of the reflection protrusion 130', the surface facing the light source portion can be referred to as the reflection surface 131', and the surface opposite to the direction facing the light source portion can be referred to as the inclined surface 132'. Light emitted or reflected from the light source 200' can be scattered and reflected after reaching the reflection surface 131'.

[0156] For example, on a cross-section perpendicular to the second direction, the length of the reflection surface 131' can be formed to be greater than the length of the inclined surface 132'. Accordingly, the range of the surface in the direction facing the light source can be formed to be greater, and thus more light can be reflected. Accordingly, the optical efficiency can be further improved. However, the dimensional relationship between the reflection surface 131' and the inclined surface 132' is not limited to the above description.

[0157] Meanwhile, the plate portion 100' can further include a printed layer formed by printing a reflection material on the surface of the reflection protrusion 130'.

[0158] By printing the reflection material on the surface of the reflection protrusion 130', the reflectance and the re-reflectance can be further increased, and thus the optical efficiency can be further improved. Here, a known reflection material can be used as the reflection material.

[0159] Meanwhile, the optical resin layer 300' can further include a plurality of air gaps 320' formed in the inside of the optical main body 310'. Further, the plurality of air gaps 320' can be configured to guide light reaching the air gap 320' by internal total reflection.

[0160] Specifically, when the optical resin layer 300' is manufactured, the air gap 320' can be formed together inside the optical body 310'. Light input to the optical resin layer 300' and reaching the air gap 320' can be scattered to reflect the light. Then, the light totally reflected inside the air gap 320' can be guided forward, or can be guided to propagate to the total reflection optical element 340' which will be described below. In addition, the light reaching the air gap 320' can be light emitted from a light source or reflected light.

[0161] The shape of the air gap 320' is not limited, and the air gap 320' can be formed in various shapes to be scattered or re-reflected, as long as the propagation direction of light can be guided forward.

[0162] For example, the air gap 320' can have a width greater than the width in the first direction in the second direction, and can have a width greater than the width in the third direction in the second direction. That is, the air gap 320' can be formed to extend longer in the second direction.

[0163] Therefore, the air gap 320' can increase the reflectivity of light emitted from a plurality of light sources spaced apart from each other in the second direction on the plate portion 100'.

[0164] In addition, the cross-sectional shape of the air gap 320' in a direction perpendicular to the second direction can be formed in a circular shape or a polygonal shape. In the illustrated embodiment, an example in which the shape of the air gap 320' is a triangular shape is shown. However, the cross-sectional shape of the air gap 320' is not limited to the illustrated embodiment, and can be formed in various shapes, as long as the total reflectivity can be increased.

[0165] Here, the shape of the air gap 320' can be formed according to an illumination image. That is, the shape of the air gap 320' can be designed to be realized as a desired image in consideration of the design of the illumination image.

[0166] Meanwhile, the embodiment of the disclosure can further include an outer lens piece 400'. The outer lens piece 400' can include an accommodation space 411' that is fitted on the front surface of the optical resin layer 300' and accommodates the optical body 310'.

[0167] The optical body 310' includes a first region I' accommodated in the accommodation space 411' and a second region II' disposed outside the accommodation space 411', and the air gap 320' can be formed in the second region II'.

[0168] The outer lens piece 400' can include a lens body 410'.

[0169] The lens body 410' defines a main body of the outer lens piece 400' and can form an accommodation space 411' in which at least a partial area of the optical body 310' in the first direction D1' can be accommodated, and the accommodation space 411' is open toward the plate portion 100'.

[0170] The optical resin layer 300' can be completely accommodated in the accommodation space 411' of the lens body 410', or a partial area including a front surface of the optical resin layer 300' can be accommodated therein. In the illustrated embodiment, a partial area of the optical resin layer 300' can be covered by the lens body 410'. When a partial area of the optical resin layer 300' is accommodated in the lens body 410', the optical resin layer 300' can include a first area I' accommodated in the accommodation space 411' and a second area II' disposed outside the accommodation space 411'.

[0171] For example, the air gap 320' can be formed in the second area II'. More specifically, the air gap 320' can be formed in an area adjacent to the light source portion and not covered by the outer lens piece 400'. Accordingly, light in the first area I' can be totally reflected by the outer lens piece 400', and light in the second area II' can be totally reflected by the air gap 320'.

[0172] Accordingly, a ratio of light input to the optical resin layer 300' guided by total reflection can be improved. Accordingly, optical efficiency of a lamp for a vehicle can be further improved. However, a position of the air gap 320' is not limited to the illustrated embodiment, and can be formed in the first area I', for example.

[0173] Further, the outer lens piece 400' can further include a fixing portion 430'.

[0174] The fixing portion 430' can be formed in the lens body 410' and can be fitted with the optical resin layer 300'. Further, the optical resin layer 300' can further include a fitting portion 350' configured to correspond to the fixing portion 430'. Here, shapes and fitting methods of the fixing portion 430' and the fitting portion 350' are not limited, and various methods can be applied when the optical resin layer 300' and the outer lens piece 400' can be fitted.

[0175] For example, the fixing portion 430' and the fitting portion 350' can be formed at a point at which the first area I' and the second area II' meet each other. However, a position of the fixing portion 430' and the fitting portion 350' is not limited thereto.

[0176] In Figure 15 , Figure 19 , Figure 21 and Figure 23In the fourth embodiment, an example of the fitting portion 350' and the fixing portion 430' is illustrated. For example, the fitting portion 350' can include a fitting groove to be concavely formed on a side surface of the optical body 310'.

[0177] Further, the fixing portion 430' can include a fixing boss formed at a rear end of the lens body 410' and protruding toward the accommodation space 411' to be inserted into the fitting groove.

[0178] Specifically, in the fitting process, the optical resin layer 300' and the outer lens member 400' can be fitted when the fixing boss is inserted into the fitting groove. The fixing boss can be continuously formed along a circumference of the opening of the lens body 410' and can protrude toward the accommodation space 411'. Further, the fitting groove can be concavely formed at a circumference of the side surface of the optical body 310' to correspond to a shape of the fixing boss.

[0179] However, the shape of the fixing portion 430' and the fitting portion 350' is not limited to the illustrated embodiment. For example, although not illustrated, the fitting portion 350' can include a fitting boss protruding from a side surface of the optical body 310'.

[0180] Further, the fixing portion 430' can include a stop boss formed to be stopped by the fitting boss to prevent the outer lens member 400' from deviating from the optical resin layer 300' in the first direction D1'.

[0181] For example, the fitting boss can be continuously formed along a circumference of the opening of the lens body 410' and can protrude toward the accommodation space 411'. Further, the stop boss can be formed at a position corresponding to a position of the fixing boss and can be formed to protrude along a circumference of the side surface of the optical body 310'.

[0182] Accordingly, the optical resin layer 300' and the outer lens member 400' can prevent the outer lens member 400' from being separated from the optical resin layer 300' during fitting. Accordingly, fitting performance of the optical resin layer 300' and the outer lens member 400' can be improved by the configuration of the fitting portion 350' and the fixing portion 430'.

[0183] Meanwhile, in Figures 22 to 23 In the fourth embodiment, an example of the fitting portion 350' and the fixing portion 430' is illustrated. For example, the fitting portion 350' can include a fitting groove to be concavely formed on a side surface of the optical body 310'. Figure 22 is a front view illustrating a front surface of the optical resin layer 300' according to the fourth embodiment of the disclosure; and Figure 23 is a side view illustrating a side surface of the optical resin layer 300' according to the fourth embodiment of the disclosure.

[0184] The light for a vehicle according to the fourth embodiment of the present disclosure differs from the third embodiment described above in that the optical resin layer 300’ further includes total reflection optical elements 340’. Apart from the above difference, the fourth embodiment of the present disclosure can include all the configurations of the third embodiment of the present disclosure. Hereinafter, detailed description of the configurations common to the above-described configurations will be omitted.

[0185] According to the fourth embodiment of the present disclosure, the optical resin layer 300’ can include an optical body 310’ and a plurality of total reflection optical elements 340’ protruding from a surface of the optical body 310’ and integrally formed with the optical body 310’.

[0186] Further, the total reflection optical elements 340’ can be configured to guide the light emitted from the light source portion by internal total reflection inside the optical body 310’.

[0187] The total reflection optical elements 340’ are members formed on the surface of the optical body 310’ to increase the optical efficiency of the light for a vehicle 10’ by internal total reflection and to achieve a uniform surface light emission image. Specifically, the total reflection optical elements 340’ can be formed on the surface of the optical body 310’, and can be formed at least on the front surface among the surfaces.

[0188] The light input to the optical body 310’ and reaching the total reflection optical elements 340’ can be reflected into the optical body 310’ by internal total reflection, and can be guided forward or guided forward by re-reflection so that the light is emitted forward. Therefore, according to the present disclosure, it is possible to improve the optical efficiency, improve the optical uniformity, and thus a high-brightness surface emission image can be achieved.

[0189] Further, the total reflection optical elements 340’ according to the embodiments of the present disclosure can be integrally formed with the optical body 310’. Specifically, in the embodiments of the present disclosure, when the optical body 310’ is manufactured, the total reflection optical elements 340’ are formed on the surface of the optical body 310’ as designed previously so that the optical body 310’ and the total reflection optical elements 340’ can be integrally formed.

[0190] According to the fourth embodiment of the present disclosure, by total reflection inside the optical body 310’ by the total reflection optical elements 340’ to improve the optical efficiency and the optical uniformity, a high-brightness surface light emission image can be achieved.

[0191] In the embodiments of the present disclosure, since the total reflection optical elements 340’ are integrally formed with the optical body 310’, it can not be necessary to require an additional process or a separate lens to achieve a uniform surface light emission. Therefore, it is possible to improve the manufacturing performance, and the cost can be advantageous.

[0192] Meanwhile, as described above, the shape of the total reflection optical element 340' can be formed in a bar shape extending in the first direction D1' or the second direction D2'. That is, the total reflection optical element 340' can be formed to have the same cross section along the extending direction.

[0193] In the total reflection optical element 340', the cross-sectional shape in a direction perpendicular to the extending direction of the total reflection optical element 340' can be formed in an arc shape or a polygonal shape. However, the shape of the total reflection optical element 340' is not limited to the above-described shape.

[0194] Meanwhile, the surface of the optical main body 310' can include a front surface facing the first direction D1', a rear surface facing the plate portion 100', and a side surface between the front surface and the rear surface. Further, the first total reflection optical element 340' can be formed on the front surface or the side surface of the optical main body 310'.

[0195] For example, with reference to Figure 22 and Figure 23 the total reflection optical element 340' can include a front total reflection optical element 340'. Hereinafter, for convenience of description, the front total reflection optical element 340' and the total reflection optical element 340' will be described by using the same reference numerals.

[0196] The front total reflection optical element 340' can be formed on the front surface of the optical main body 310', and can be formed to extend in the second direction D2' or the third direction D3'. Further, a plurality of front total reflection optical elements 340' can be provided, and the plurality of front total reflection optical elements 340' can be arranged to be spaced apart from each other in a direction crossing the extending direction of the plurality of front total reflection optical elements 340'.

[0197] For example, as in the illustrated embodiment, the front total reflection optical element 340' can be formed to extend in the second direction D2'. The plurality of front total reflection optical elements 340' can be arranged to be spaced apart from each other in the third direction D3', which is a direction crossing the second direction D2'.

[0198] However, the extending direction and the arrangement direction of the front total reflection optical element 340' are not limited to the above description, and can be formed in various directions. For example, the front total reflection optical element 340' can extend in the third direction D3', and the plurality of front total reflection optical elements 340' can be arranged to be spaced apart from each other in the second direction D2'. Further, the front total reflection optical element 340' can be formed to extend in a direction other than the second direction D2' or the third direction D3'.

[0199] As described above, in the embodiment of the present disclosure, the plurality of front total reflection optical elements 340' are continuously arranged in one direction so that light can cause a plurality of internal total reflections in the optical body 310', and thus, optical uniformity can be further improved.

[0200] Further, although not shown, the total reflection optical element 340' can further include a side total reflection optical element.

[0201] The side total reflection optical element can be formed on a side surface of the optical body 310', and can be formed to extend in the first direction D1' or the second direction D2'. Further, a plurality of side total reflection optical elements can be provided, and the plurality of side total reflection optical elements can be arranged to be spaced apart from each other to cross the extension directions of the plurality of side total reflection optical elements.

[0202] For example, the side total reflection optical element can be formed on one side and the opposite side of the optical body 310' in the third direction D3'. Further, the side total reflection optical element can be formed to extend in the first direction D1', and a plurality of side total reflection optical elements can be arranged to be spaced apart from each other along the second direction D2', which is a direction crossing the extension direction.

[0203] In other words, the side total reflection optical element can protrude from the upper surface and the lower surface of the optical body 310'. The side total reflection optical element can extend in the front-rear direction, and a plurality of side total reflection optical elements can be repeatedly arranged to be spaced apart from each other in the left / right direction.

[0204] Accordingly, the side total reflection optical element can be formed to extend in a different direction (e.g., a crossing direction) from the front total reflection optical element 340', and can be arranged in a different direction. Further, while a plurality of side total reflection optical elements are formed at regular intervals, the plurality of side total reflection optical elements can be repeatedly arranged in the same shape.

[0205] Accordingly, even when light is emitted at various angles from the light source portion, total reflection can be caused inside the optical resin layer 300'. Accordingly, optical uniformity of the lamp for a vehicle can be further improved.

[0206] The optical resin layer 300' according to the embodiment of the present disclosure includes a side total reflection optical element in addition to the front total reflection optical element 340', and the side total reflection optical element can be arranged in a different direction from the front total reflection optical element 340', whereby optical uniformity and optical efficiency of the lamp 10' for a vehicle can be further improved.

[0207] According to the embodiment of the present disclosure as described above, optical efficiency can be improved while ensuring uniformity, and thus, a high-brightness surface-emission image can be implemented.

[0208] According to embodiments of the disclosure, no additional processing or separate lens is required to achieve a uniform surface emission image, and thus, there are less spatial limitations and it is advantageous in terms of cost.

[0209] The disclosure provides at least one of the following effects.

[0210] According to embodiments of the disclosure, light emission efficiency can be improved while ensuring uniformity, and thus, a high-brightness surface emission image can be achieved.

[0211] According to embodiments of the disclosure, no additional processing or separate lens is required to achieve a uniform surface emission image, and thus, there are less spatial limitations and it is advantageous in terms of cost.

[0212] Although specific embodiments of the disclosure have been described above, the spirit and scope of the disclosure are not limited to these specific embodiments, and those skilled in the art to which the disclosure belongs can make various modifications and changes without departing from the spirit of the disclosure described in the technical solutions of the disclosure.

Claims

1. A light for a vehicle, characterized in that, The lamp includes: a board portion; a light source portion including a plurality of light sources mounted on a front surface of the board portion; and an optical resin layer provided on the front surface of the board portion, the optical resin layer being configured to cover the plurality of light sources, wherein the optical resin layer includes: an optical main body; and a plurality of first total reflection optical elements protruding from a surface of the optical main body and integrally formed with the optical main body, and wherein the optical resin layer is configured to totally reflect light emitted from the light source portion and guide the light to a front surface of the optical main body.

2. The lamp of claim 1, wherein A direction facing the optical resin layer from the board portion is defined as a first direction, a direction perpendicular to the first direction and in which the optical resin layer extends is defined as a second direction, and a direction perpendicular to the first direction and the second direction is defined as a third direction, wherein the optical main body includes: a front surface that is a surface facing the first direction; a back surface that is a surface facing the board portion; and a side surface provided between the front surface and the back surface, wherein the first total reflection optical elements include: a plurality of front total reflection optical elements formed on the front surface of the optical main body, and the plurality of front total reflection optical elements are formed to extend in the second direction or the third direction, and wherein the plurality of front total reflection optical elements are arranged in a direction intersecting with an extension direction of the front total reflection optical elements.

3. The lamp of claim 2, wherein The first total reflection optical elements further include: a plurality of side total reflection optical elements formed on the side surface of the optical main body, the first total reflection optical elements are formed to extend in the first direction or the second direction, and wherein the plurality of side total reflection optical elements are arranged in a direction intersecting with an extension direction of the side total reflection optical elements.

4. The lamp of claim 2, wherein A cross-sectional shape of the first total reflection optical elements in a direction perpendicular to the extension direction of the first total reflection optical elements is formed in an arc shape or a polygonal shape.

5. The lamp of claim 2, wherein The lamp further includes: an outer lens member provided on a front surface of the optical resin layer, wherein the outer lens member includes: a lens main body configured such that at least a partial region of the optical main body in the first direction is accommodated in the lens main body, and an accommodation space opened toward the board portion is formed in the lens main body; and a fixing portion formed in the lens main body and configured to be fitted with the optical resin layer, and wherein the optical resin layer further includes a fitting portion configured to correspond to the fixing portion.

6. The lamp of claim 5, wherein The fitting portion includes a recessed fitting groove formed on the side surface of the optical main body, and wherein the fixing portion includes a fixing boss formed at a back end of the lens main body and protruding toward the accommodation space to be inserted into the fitting groove.

7. The lamp of claim 5, wherein The fitting portion includes a fitting boss protruding from the side surface of the optical main body, and wherein the fixing portion includes a stop boss formed to be stopped by the fitting boss to prevent the outer lens member from deviating from the optical resin layer in the first direction.

8. The lamp of claim 5, wherein The outer lens member includes a plurality of second total reflection optical elements integrally formed with at least one of a front surface and a side surface of the lens body, and wherein the outer lens member is configured to guide light emitted from the optical resin layer by internal total reflection.

9. The lamp of claim 8, wherein, The second total reflection optical elements extend in a direction crossing a direction in which the first total reflection optical elements extend, and wherein the plurality of second total reflection optical elements are arranged to be spaced apart from each other in a direction crossing a direction in which the second total reflection optical elements extend.

10. The lamp of claim 3, wherein, The plurality of side total reflection optical elements are spaced apart from each other.

11. A light for a vehicle, characterized in that The lamp includes: a plate portion; a light source portion including a plurality of light sources mounted on a front surface of the plate portion; and an optical resin layer provided on the front surface of the plate portion, the optical resin layer configured to cover the plurality of light sources, wherein the plate portion includes a plurality of reflection bosses protruding from the front surface thereof to reflect light emitted from the light source portion forward.

12. The lamp of claim 11, wherein, The optical resin layer includes: an optical body; a light source accommodation portion formed in the optical body to accommodate the plurality of light sources; and a plurality of boss accommodation portions formed corresponding to the reflection bosses and formed in the optical body to accommodate the plurality of reflection bosses.

13. The lamp of claim 11, wherein, The reflection bosses are formed in a convex curved shape or a polygonal column shape.

14. The lamp of claim 11, wherein, Each of the reflection bosses includes: a reflection surface formed to face the light source portion, the reflection boss configured to reflect light emitted from the light source portion; and an inclined surface provided in a direction opposite to a direction in which the reflection surface faces the light source portion.

15. The lamp of claim 11, wherein, The plate portion further includes: a printed layer formed by printing a reflection material on a surface of the reflection boss.

16. The lamp of claim 11, wherein, The optical resin layer includes: an optical body; and a plurality of air gaps formed in an inside of the optical body, and wherein the plurality of air gaps are configured to guide light that has reached the air gaps by internal total reflection.

17. The lamp of claim 16, wherein, A direction facing the optical resin layer from the plate portion is defined as a first direction, and a direction perpendicular to the first direction and in which the optical resin layer extends is defined as a second direction, wherein the air gap is formed such that a width in the second direction is greater than a width in the first direction, and wherein a cross-sectional shape of the air gap in a direction perpendicular to the second direction is formed in a circular shape or a polygonal shape.

18. The lamp of claim 16, wherein, The lamp further includes: an outer lens member fitted on a front surface of the optical resin layer, the outer lens member including an accommodation space that accommodates the optical body, wherein the optical body includes: a first region accommodated in the accommodation space; and a second region arranged outside the accommodation space, and wherein the air gap is formed in the second region.

19. The lamp of claim 11, wherein, The optical resin layer includes: an optical body; and a plurality of total reflection optical elements protruding from a surface of the optical body, the plurality of total reflection optical elements integrally formed with the optical body, and wherein the total reflection optical elements are configured to guide light emitted from the light source portion in the optical body by internal total reflection.

20. The lamp of claim 19, wherein, A direction in which the plate portion faces the optical resin layer is defined as a first direction, a direction perpendicular to the first direction and in which the optical resin layer extends is defined as a second direction, and a direction perpendicular to the first direction and the second direction is defined as a third direction, wherein the optical body includes: a front surface that is a surface facing the first direction; a back surface that is a surface facing the plate portion; and a side surface provided between the front surface and the back surface, wherein the total reflection optical element includes a plurality of front total reflection optical elements formed on the front surface of the optical body, the plurality of front total reflection optical elements are formed to extend in the second direction or the third direction, and wherein the plurality of front total reflection optical elements are arranged to be spaced apart from each other in a direction intersecting with an extension direction of the front total reflection optical elements.

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