Patent Publication Number: US-11655952-B2

Title: Vehicle grille

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     The present application is a divisional application of non-provisional U.S. patent application Ser. No. 17/341,883, filed on. Jun. 8, 2021, which claims priority to and the benefit of Korean Patent Application Nb. 10-2020-0129042, filed on Oct. 6, 2020, the entire contents of each of which are incorporated herein by reference. 
    
    
     FIELD 
     The present disclosure relates to a vehicle grille. 
     BACKGROUND 
     The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. 
     A radiator grille for aerodynamics and engine cooling is provided in a front portion of a vehicle, and even when a vehicle is not an internal combustion engine vehicle, a grille is applied for a design component of the front portion of the vehicle. 
     The grille is a very important factor in designing the front portion of the vehicle, and light is irradiated through the grille to upgrade the grille and improve marketability of the vehicle. 
     Conventionally, in order to emit light from a grille, a lighting is installed behind the grille to emit light to a front side of the grille, but we have discovered that an installation space for a source is desired. 
     In addition, when the grille is manufactured and parts forming the grille are coupled, work convenience is degraded because a coupling should be performed at a different position for each part. 
     The foregoing is intended merely to aid in understanding of the background of the present disclosure, and is not intended to mean that the present disclosure falls within the purview of the related art that is already known to those skilled in the art. 
     SUMMARY 
     The present disclosure provides a vehicle grille in which light is turned on and is softly spread from a rear side of the grille so that the grille is upgraded. In addition, the present disclosure provides a vehicle grille in which an easy coupling is provided when each of parts forming the vehicle grille is coupled. 
     In one form, there is provided a vehicle grille including: a grille panel configured to form a design of a grille; a lens panel disposed at a rear side of the grille panel, formed in the same shape as some or entire area of the grille panel, and configured to allow light to propagate in the lens panel when the light is incident and emit some of the light to the outside; and a housing including a coupling provision end portion, disposed on a rear surface of the lens panel, formed in the same shape as the tens panel, and configured to allow the grille panel to be coupled to a front surface of the lens panel in a state in which the lens panel is coupled to a front surface of the housing, wherein the rear surface of the lens panel and the front surface of the housing are coupled at a front side of the lens panel, and the front surface of the lens panel and the rear surface of the grille panel are coupled at the front side of the lens panel through a coupling provision end portion of the housing. 
     A laser may be emitted from the front side to a rear side so that the grille panel, the lens panel, and the housing may be coupled such that the grille panel and the housing are fused to the front surface and the rear surface of the lens panel. 
     In the housing, a frame portion may be coupled to a rim of the lens panel, the coupling provision end portion may extend from the frame portion, and the coupling provision end portion may be divided into an overlapping section which overlaps the ille panel at the front side and a non-overlapping section which does not overlap the grille panel. 
     The coupling provision end portion may obliquely extend from the frame portion to the rear side to form an inclined surface so that the laser being incident from the front side may be reflected through the inclined surface to propagate to the rear surface of the grille panel. 
     In the coupling provision end portion, the non-overlapping section of the inclined surface on which the laser is incident may undergo surface treatment to increase reflectance of a corresponding section. 
     A portion in which the grille panel is disposed may be curved to the rear side to form a bending portion in the lens panel, a fusing portion matched to the bending portion of the lens panel and seated on the bending portion may be formed in the grille panel, and the coupling provision end portion of the housing may obliquely extend from the frame portion to the rear side and may be obliquely formed to allow the laser being incident from the front side to propagate to a fusing portion of the grille panel. 
     The coupling provision end portion may extend to have a parabolic curve in the frame portion to form a curved surface so that the laser being incident from the front side may propagate toward the rear side of the grille panel. 
     In the coupling provision end portion, the non-overlapping section of the curved surface on which the laser is incident may undergo surface treatment to increase reflectance of a corresponding section. 
     A portion in which the grille panel is disposed may be curved to the rear side to form a bending portion in the lens panel, a fusing portion matched to the bending portion of the lens panel and seated on the bending portion may be formed in the grille panel, and the coupling provision end portion of the housing may extend to have a parabolic curve from the frame portion to the rear side and may be obliquely formed to allow the laser being incident from the front side to propagate to a fusing portion of the grille panel. 
     The coupling provision end portion may include a first reflective end portion located in the non-overlapping section and configured to extend from the frame portion to the rear side in a straight line with an inclination, and a second reflective end portion located in the overlapping section and configured to extend from the first reflective end portion to the front side in a straight line with an inclination so that the laser being incident from the front side may be reflected the first reflective end portion to propagate to the second reflective end portion and then reflected by the second reflective end portion to propagate to the rear surface of the grille panel. 
     The first reflective end portion and the second reflective end portion may undergo surface treatment so that reflectance of corresponding sections may be high. 
     The coupling provision end portion may include a first curved end portion located in the non-overlapping section and configured to extend to have a parabolic curve from the frame portion to the rear side, and a second curved end portion located in the overlapping section and configured to extend to have a parabolic curve from the first curved end portion to the front side so that the laser being incident from the front side may be reflected by the first curved end portion to propagate to the second curved end portion and then reflected by the second curved end portion to propagate to the rear surface of the grille panel. 
     The first curved end portion and the second curved end portion may undergo surface treatment so that reflectance corresponding sections may be high. 
     A length of one of the frame portions of the housing may be formed to be longer to the front end, and, when the lens panel and the housing are coupled, the frame portion extending longer may be coupled to the lens panel, and then the other frame portion may be coupled to the lens panel. 
     According to another form, a vehicle grille includes: a grille panel configured to constitute a design of a grille; a lens panel disposed at a rear side of the grille panel, formed in the same shape as some or entire area of the grille panel, and configured to allow light to propagate in the lens panel when the light is incident and emit some of the light to the outside; and a housing including a coupling provision hole, disposed on a rear surface of the lens panel, formed in the same shape as the lens panel, and configured to allow the panel to be coupled to a front surface of the lens panel in a state in which the lens panel is coupled to a front surface of the housing, wherein the rear surface of the lens panel and the front surface of the housing are coupled at a front side of the lens panel, and the front surface of the lens panel and the rear surface of the g panel are coupled at the rear side of the lens panel through the coupling provision hole of the housing. 
     The housing may be coupled to the rear surface of the lens panel through a peripheral portion of the coupling provision hole, and the grille panel may be disposed to face the coupling provision hole of the housing and coupled to the front side of the lens panel. 
     In the housing, the peripheral portion of the coupling provision hole may be coupled to the rear surface of the lens panel, and the housing and the lens panel may be coupled by an extending end portion which extends from the rear surface of the lens panel toward the peripheral portion of the housing or extends from the peripheral portion of the housing toward the rear surface of the lens panel. 
     Further areas of applicability will become apparent from the description provided herein. It should be understood that the description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the present disclosure. 
    
    
     
       DRAWINGS 
       In order that the disclosure may be well understood, there will now be described various forms thereof, given by way of example, reference being made to the accompanying drawings, in which: 
         FIG.  1    is a diagram illustrating a vehicle grille according to the present disclosure; 
         FIG.  2    is a diagram illustrating a coupling of a grille panel, a lens panel, and a housing of the vehicle grille shown in  FIG.  1   ; 
         FIG.  3    is a diagram illustrating a first form of the present disclosure; 
         FIG.  4    is a diagram illustrating a second form of the present disclosure; 
         FIG.  5    is a diagram illustrating a third form of the present disclosure; 
         FIG.  6    is a diagram illustrating a fourth form of the present disclosure; 
         FIG.  7    is a diagram illustrating a fifth form of the present disclosure; 
         FIG.  8    is a diagram illustrating a sixth form of the present disclosure; 
         FIG.  9    is a diagram for describing a frame portion forming the housing of the present disclosure; 
         FIG.  10    is a diagram illustrating a coupling of a grille panel, a lens panel, and a housing of a vehicle grille according to another form of the present disclosure; and 
         FIGS.  11  and  12    are diagrams illustrating a coupling of a grille panel, a lens panel, and a housing of a vehicle grille according to still another form of the present disclosure. 
     
    
    
     The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. 
     DETAILED DESCRIPTION 
     The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses. It should be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts and features. 
       FIG.  1    is a diagram illustrating a vehicle grille according to the present disclosure,  FIG.  2    is a diagram illustrating a coupling of a grille panel, a lens panel, and a housing of the vehicle grille shown in  FIG.  1   ,  FIG.  3    is a diagram illustrating a first form of the present disclosure,  FIG.  4    is a diagram illustrating a second form of the present disclosure,  FIG.  5    is a diagram illustrating a third form of the present disclosure,  FIG.  6    is a diagram illustrating a fourth form of the present disclosure,  FIG.  7    is a diagram illustrating a fifth form of the present disclosure,  FIG.  8    is a diagram illustrating a sixth form of the present disclosure, and  FIG.  9    is a diagram for describing a frame portion forming the housing of the present disclosure. In addition,  FIG.  10    is a diagram illustrating a coupling of a grille panel, a lens panel, and a housing of a vehicle grille according to another form of the present disclosure, and  FIGS.  11  and  12    are diagrams illustrating a coupling of a grille panel, a lens panel, and a housing of a vehicle grille according to still another form of the present disclosure. 
     As shown in  FIG.  1   , a vehicle grille according to the present disclosure includes a grille panel  100  forming a design of the grille; a lens panel  200  disposed in a rear surface of the grille panel  100 , formed in the same shape as some or entire area of the grille panel  100 , and configured to allow light to propagate in an interior of the lens panel  200  when the light is incident and emit some of the light to the outside; and a housing  300  disposed in a rear surface of the lens panel  200 , formed in the same shape as the lens panel  200 , and having a coupling provision end portion  310  configured to allow the grille panel  100  to be coupled to a front surface of the lens panel  200  in a state in which the lens panel  200  is coupled to a front surface of the housing  300 . 
     According to the present disclosure, the grille panel  100 , the lens panel  200 , and the housing  300  are provided from a front side to a rear side of the vehicle, and a cover panel  400  forming a front surface portion of the vehicle may be further provided toward a rear side of the housing  300 . Here, a plurality of holes are formed in the grille panel  100  to allow air to circulate from the front surface portion of the vehicle to the inside and outside thereof, and a design of the grille panel  100  may be determined according to the plurality of holes. As shown in the drawing, the holes of the grille panel  100  may be formed not only in a rhombus shape, but also in an irregular shape such as a circle or a polygon according to a desired design. 
     The lens panel  200  may be mounted on the rear surface of the grille panel  100  and formed in the same shape as some or entire area of the grille panel  100 . In addition, the lens panel  200  is configured to allow light to pass therethrough and formed as a light guide in which incident light propagates inward the light guide and some of the incident light is emitted to the outside. Thus, when the lens panel  200  is formed in the same shape as some area of the grille panel  100 , light is emitted from some area of the grille panel  100 , and, when the lens panel  200  is formed in the same shape as the entire area of the ile panel  100 , light is emitted from the entire area of the grille panel  100 . This may be determined according to a design factor of the grille panel  100 . 
     The housing  300  mounted on the rear surface of the lens panel  200  is formed in the same shape as the lens panel  200 . A light source unit  500  for emitting light to the lens panel  200  may be installed in the housing  300 . That is, the housing  300  reflects light propagating toward the rear side of the light emitted from the lens panel  200  to emit the reflected light to the grille panel  100  so that light efficiency is improved. 
     Consequently, according to the present disclosure, when the light source unit  500  emits light, the light is emitted through the lens panel  200  disposed at the rear side of the grille panel  100  and propagates to spread toward the front side of the grille panel  100  so that the grille panel  100  is further upgraded. In addition, owing to the housing  300 , light emission efficiency of the light emitted from the lens panel  200  is provided. 
     According to the present disclosure, in order to improve convenience of a coupling of the grille panel  100 , the lens panel  200 , and the housing  300 , a coupling provision end portion  310  is formed in the housing  300 . The coupling provision end portion  310  is to support a coupling of the rear surface of the grille panel  100  to the front surface of the lens panel  200 , and the lens panel  200  is couple to a front surface of the housing  300  at the front side of the lens panel  200 , and the rear surface of the grille panel  100  is coupled to the front surface of the lens panel  200  at the front side thereof through the coupling provision end portion  310  of the housing  300 . That is, all of the grille panel  100 , the lens panel  200 , and the housing  300  may be processed from the front side to the rear side so that work convenience is provided. 
     Specifically, the grille panel  100 , the lens panel  200 , and the housing  300  are irradiated with a laser from the front side to the rear side so that the grille panel  100  and the housing  300  may be fused and bonded to the front and rear surfaces of the lens panel  200 , respectively. That is, according to the present disclosure, the coupling of the grille panel  100 , the lens panel  200 , and the housing  300  may be performed through the laser, and the laser is emitted from the front side to the rear side. As described above, since an emission direction of the laser when the grille panel  100  and the lens panel  200  are coupled coincides with an emission direction of the laser when the lens panel  200  and the housing  300  are coupled, complexity of a manufacturing process is reduced and manufacturing convenience is improved. 
     As shown in  FIG.  2   , since the lens panel  200  is configured to allow light to pass therethrough, the laser emitted from the front side to the rear side passes through the lens panel  200  to be incident on the front surface of the housing  300 . Consequently, the rear surface of the lens panel  200  and the front surface of the housing  300  are fused due to the laser. 
     Meanwhile, when the grille panel  100  and the lens panel  200  are coupled, the laser should be incident on the rear surface of the grille panel  100 . To this end, the housing  300  is provided with the coupling provision end portion  310  which switches a propagation path of the laser so that the laser emitted from the front side to the rear side is reflected by the coupling provision end portion  310  to propagate to the rear surface of the grille panel  100 . Consequently, the rear surface of the grille panel  100  and the front surface of the lens panel  200  may be fused due to the laser. 
     As described above, by using the laser emitted from the front side to the rear side, the grille panel  100  and the housing  300  may be coupled to the front and rear surfaces of the lens panel  200 , respectively. Thus, since an emission direction of the laser when the grille panel  100  and the lens panel  200  are coupled coincides with an emission direction of the laser when the lens panel  200  and the housing  300  are coupled, complexity of a manufacturing process is reduced and manufacturing convenience is improved. 
     As shown in BIG.  2 , in the housing  300 , a frame portion  320  may be coupled to a rim of the lens panel  200 , the coupling provision end portion  310  extends from the frame portion  320 , and the coupling provision end portion  310  may be divided into an overlapping section A overlapping the grille panel  100  to the front side and a non-overlapping section B not overlapping the grille panel  100 . 
     As described above, the housing  300  may be formed of the frame portion  320  and the coupling provision end portion  310 , and the frame portion  320  and a coupling provision end portion  310  are formed as one piece. The frame portion  320  is coupled to the rear surface of the lens panel  200 , and the coupling provision end portion  310  is formed to switch the propagation path of the laser. Here, the coupling provision end portion  310  is divided into the overlapping section A overlapping the grille panel  100  and the non-overlapping section B not overlapping the grille panel  100 . That is, in the coupling provision end portion  310 , the non-overlapping section B is a space in which the laser emitted from the front side to the rear side is incident, and the overlapping section A is a space in which the laser that is not incident from the outside and has the switched propagation path propagates to the rear surface of the grille panel  100 . 
     Accordingly, the coupling provision end portion  310  may be applied in various examples as follows. 
     As shown in  FIG.  3   , according to a first example, the coupling provision end portion  310  obliquely extends from the frame portion  320  to the rear side to form an inclined surface so that a laser incident from the front side may be reflected from the inclined surface to propagate to the rear surface of the grille panel  100 . 
     As described above, the coupling provision end portion  310  of the housing  300  extends from the frame portion  320  toward the rear side in a straight line with an inclination so that, when the laser emitted from the front side to the rear side is incident on the inclined surface, the propagation path of the laser is switched. Here, an inclined angle of the coupling provision end portion  310  is set to allow the incident laser to be incident on the rear surface of the grille panel  100 . 
     Here, in the coupling provision end portion  310 , the non-overlapping section B of the inclined surface on which the laser is incident undergoes surface treatment to increase reflectance of a corresponding section. That is, the non-overlapping section B of the coupling provision end portion  310  is formed to increase the reflectance of the corresponding section through aluminum deposition or plating treatment. 
     Consequently, when an emission position of the laser is fixed so that the laser is emitted from the front side to the rear side and moved toward a lateral side, since the moved position of the laser reflected through the inclined surface of the coupling provision end portion  310  is changed, an incident position of the laser may be adjusted at the rear surface of the grille panel  100 . 
     Meanwhile, as shown in  FIG.  4   , according to a second example, a portion in which the grille panel  100  is disposed is curved to the rear side so that a bending portion  210  may be formed in the lens panel  200 , a fusing portion  110  may be formed in the grille panel  100  to be matched to the bending portion  210  of the lens panel  200  and seated on the bending portion  210 , and the coupling provision end portion  310  of the housing  300  may be formed to obliquely extend from the frame portion  320  toward the rear side to allow the laser incident from the front side to propagate to the fusing portion  110  of the grille panel  100 . 
     Consequently, in the grille panel  100 , the fusing portion  110  is seated on the bending portion  210  of the lens panel  200  so that a fusing position of the grille panel  100  may be disposed to be closer to the coupling provision end portion  310 . Here, the coupling provision end portion  310  of the housing  300  obliquely extends from the frame portion  320  to the rear side so that the propagation path of the laser emitted from the front side to the rear side is switched due to the coupling provision end portion  310 . An inclined angle of the coupling provision end portion  310  may be set to allow the incident laser to be incident on the fusing portion  110  of the grille panel  100 . 
     In addition, the bending portion  210  and the fusing portion  110  are formed to extend in a direction perpendicular to a propagation direction of the laser reflected to propagate through the coupling provision end portion  310  so that incident efficiency of the laser is improved. In addition, in the coupling provision end portion  310 , the non-overlapping section B on which the laser is incident undergoes surface treatment to increase reflectance of a corresponding section. 
     Consequently, the laser emitted from the front side to the rear side may be reflected from the inclined surface of the coupling provision end portion  310 , may pass through the bending portion  210  of the lens panel  200 , and then may be incident on the fusing portion  110  of the grille panel  100 . In particular, the fusing portion  110  of the grille panel  100  protrudes toward the coupling provision end portion  310  and extends in a direction perpendicular to an incident direction of the laser so that incidence efficiency of the laser is improved and thus coupling performance between the grille panel  100  and the lens panel  200  is improved. 
     Meanwhile, as shown in  FIG.  5   , according to a third example, the coupling provision end portion  310  extends to have a parabolic curve in the frame portion  320  to form a curved surface so that the laser incident from the front side may propagate to the rear surface of the grille panel  100 . 
     As described above, the coupling provision end portion  310  of the housing  300  extends to be curved from the frame portion  320  toward the rear side so that, when the laser emitted from the front side to the rear side is incident on a inclined surface constituting the parabolic curve, the propagation path of the laser is switched. Here, a curvature of the coupling provision end portion  310  is set to allow the incident laser to be incident or the rear surface of the grille panel  100  with a focus. 
     In addition, in the coupling provision end portion  310 , the non-overlapping section B of the curved surface on which the laser is incident undergoes surface treatment to increase reflectance of a corresponding section. That is, the non-overlapping section B of the coupling provision end portion  310  is formed to increase the reflectance of the corresponding section through aluminum deposition or plating treatment. 
     Consequently, when the laser is emitted from the front side to the rear side to be incident on the coupling provision end portion  310 , the propagation path of the laser is moved to the rear surface of the grille panel  100  due to the parabolic shape of the coupling provision end portion  310 . In parabolic, in the coupling provision end portion  310 , the focus due to the parabolic shape is set on the rear surface of the grille panel  100  in contact with the front surface of the lens panel  200  so that, even when an emission position of the laser is moved in a lateral direction, the laser is accurately incident on the rear side of the grille panel  100 . 
     Meanwhile, as shown in  FIG.  6   , according to a fourth example, a portion in which the grille panel  100  is disposed is curved to the rear side so that the bending portion  210  may be formed in the lens panel  200 , the fusing portion  110  may be formed in the grille panel  100  to be matched to the bending portion  210  of the lens panel  200  and seated on the bending portion  210 , and the coupling provision end portion  310  of the housing  300  may extend to have a parabolic curve from the frame portion  320  toward the rear side and may be formed to be curved to allow the laser incident from the front side to propagate to the fusing portion  110  of the grille panel  100 . 
     Consequently, in the grille panel  100 , the fusing portion  110  is seated on the bending portion  210  of the lens panel  200  so that a fusing position of the grille panel  100  may be disposed to be closer to the coupling provision end portion  310 . Here, the coupling provision end portion  310  of the housing  300  extends to be curved from the frame portion  320  to the rear side so that the propagation path of the laser emitted from the front side to the rear side may be switched due to the coupling provision end portion  310  and thus the laser may be incident on the rear surface of the grille panel  100 . A curvature of the coupling provision end portion  310  may be set to allow the incident laser to be incident on the fusing portion  110  of the grille panel  100 . 
     In addition, the bending portion  210  and the fusing portion  110  are formed to extend in a direction perpendicular to a propagation direction of the laser reflected to propagate through the coupling provision end portion  310  so that incident efficiency of the laser is improved. In addition, in the coupling provision end portion  310 , the non-overlapping section B on which the laser is incident may be formed to undergo surface treatment to increase reflectance of a corresponding section. 
     Consequently, the laser emitted from the front side to the rear side is reflected from the curved surface of the coupling provision end portion  310 , passes through the bending portion  210  of the lens panel  200 , and then is incident on the fusing portion  110  of the grille panel  100 . In particular, the fusing portion  110  of the grille panel  100  protrudes toward the coupling provision end portion  310  and extends in a direction perpendicular to an incident direction of the laser so that incidence efficiency of the laser is improved and thus coupling performance between the grille panel  100  and the lens panel  200  is improved. 
     Meanwhile, as shown in  FIG.  7   , according to a fifth example, the coupling provision end portion  310  includes a first reflective end portion  330  located in the non-overlapping section B and extending from the frame portion  320  to the rear side in a straight line with an inclination, and a second reflective end portion  340  located in the overlapping section A and extending from the first reflective end portion  330  to the front side in a straight line with an inclination. Thus, the laser incident from the front side may be reflected by the first reflective end portion  330  to propagate to the second reflective end portion  340  and then reflected by the second reflective end portion  340  to propagate to the rear surface of the grille panel  100 . 
     As described above, the coupling provision end portion  310  of the housing  300  formed of the first reflective end portion  330  extending toward the rear side with an inclination and the second reflective end portion  340  extending from the first reflective end portion  330  toward the front side with an inclination so that the laser emitted from the front side to the rear side may be reflected from the first reflective end portion  330  to propagate to the second reflective end portion  340  and then reflected from the second reflective end portion  340  again to be incident on the rear surface of the grille panel  100 . Here, an inclined angle of the first reflective end portion  330  may be set to allow the incident laser to propagate toward the second reflective end portion  340 , and an inclined angle of the second reflective end portion  340  may be set to allow the laser of which the propagation path is moved through the first reflective end portion  330  to be incident on the rear side of the grille panel  100 . 
     The first reflective end portion  330  and the second reflective end portion  340  undergo surface treatment so that reflectance of corresponding sections becomes high. That is, the first reflective end portion  330  and the second reflective end portion  340  may be formed to have high reflectance through aluminum deposition or plating treatment. 
     Consequently, when an emission position of the laser is moved in the lateral direction in a state of being fixed so as to emit the laser from the front side to the rear side, a propagation position of the laser reflected through the first reflective end portion  330  and the second reflective end portion  340  which form the coupling provision end portion  310  is adjusted so that it is possible to accurately match an incident position of the laser to the rear side of the grille panel  100 . 
     Meanwhile, as shown in  FIG.  8   , according to a sixth example, the coupling provision end portion  310  includes a first curved end portion  350  located in the non-overlapping section B and extending to have a parabolic curve from the frame portion  320  to the rear side, and a second curved end portion  360  located in the overlapping section A and extending have a parabolic curve from the first curved end portion  350  to the front side. Thus, the laser incident from the front side may be reflected by the first curved end portion  350  to propagate to the second curved end portion  360  and then reflected by the second curved end portion  360  to propagate toward the rear surface of the grille panel  100 . 
     As described above, the coupling provision end portion  310  of the housing  300  is formed of the first curved end portion  350  extending to be curved toward the rear side and the second curved end portion  360  extending to be curved from the first curved end portion  350  toward the front side so that the laser emitted from the front side to the rear side may be reflected from the first curved end portion  350  to propagate to the second curved end portion  360  and then reflected from the second curved end portion  360  again to be incident on the rear surface of the grille panel  100 . Here, a curvature of the first curved end portion  350  may be set to allow the incident laser to propagate toward the second reflective end portion  340 , and a curvature of the second curved end portion  360  may be set to allow the laser of which the propagation path is moved through the first curved end portion  350  to be incident on the rear side of the grille panel  100 . 
     The first curved end portion  350  and the second curved end portion undergo surface treatment so that reflectance of corresponding sections becomes high. That is, the first curved end portion  350  and the second curved end portion  360  may be formed to have high reflectance through aluminum deposition or plating treatment. 
     Consequently, when the laser is emitted from the front side to the rear side to be incident on the first curved end portion  350  forming the coupling provision end portion  310 , the laser propagates to the second curved end portion  360  due to a parabolic shape of the first curved end portion  350 . In addition, the laser being incident on the second curved end portion  360  propagates to the rear surface of the grille panel  100  due to a parabolic shape of the second curved end portion  360 . In particular, a focus of the first curved end portion  350  according to the parabolic shape thereof is set in the second curved end portion  360 , and a focus of the second curved end portion  360  according to the parabolic shape thereof is set on the rear surface of the grille panel  100  so that, even when an emission position of the laser is moved in the lateral direction, the laser is accurately incident on the rear surface of the grille panel  100 . 
     Meanwhile, as shown in  FIG.  9   , one or the frame portions  320  of the housing  300  is formed to have a longer length toward the front side, and, when the lens panel  200  and the housing  300  are coupled, one frame portion  320  extending longer may be coupled to the lens panel  200  and then the other frame portion  320  may be coupled to the lens panel  200 . 
     That is, a pair of the frame portions  320  of the housing  300  is coupled to the lens panel  200  through laser fusing. However, owing to a characteristic of laser fusing, the frame portion  320  on which the laser incident is melted and thus a length of the frame portion  320  is reduced. Thus, when the frame portions  320  have the same length and one of the frame portions  320  is fused, fusing of the other frame portion  320  is difficult. 
     Therefore, any one of the frame portions  320  should be formed no have a long length toward the front side. Consequently, when the lens panel  200  and the housing  300  are coupled, the frame portion  320  extending longer is first fused to the lens panel  200  and then the other frame portion  320  is fused to the lens panel  200  so that unstable fusion due to a length deviation is inhibited. 
     Meanwhile, as shown in  FIGS.  1  and  10   , the vehicle grille according to the present disclosure includes the grille panel  100  constituting a design of the grille; the lens panel  200  disposed in a rear surface of the grille panel  100 , formed in the same shape as some or entire area of the grille panel  100 , and configured to allow light to propagate in an inter or of the lens panel  200  when the light is incident and emit some of the light to the outside; and a housing  300  disposed in a rear surface of the lens panel  200 , formed in the same shape as the lens panel  200 , and having a coupling provision hole  370  allowing the grille panel  100  to be coupled to a front surface of the lens panel  200  in a state in which the lens panel  200  is coupled to a front surface of the housing  300 . 
     As described above, according to the present disclosure, in order to improve convenience of a coupling of the grille panel  100 , the lens panel  200 , and the housing  300 , a coupling provision hole  370  is formed in the housing  300 . The coupling provision hole  370  is for allowing the rear surface of the grille panel  100  to be coupled to the front surface of the lens panel  200 , the lens panel  200  is coupled to the front surface of the housing  300  at the front side of the lens panel  200 , and the rear surface of the grille panel  100  is coupled to the front surface of the lens panel  200  at the rear side thereof through the coupling provision hole  370  of the housing  300 . Consequently, the grille panel  100  may be coupled to the front surface of the lens panel  200 , and the housing  300  may be coupled to the rear surface of the lens panel  200 . 
     Specifically, the grille panel  100 , the lens panel  200 , and the housing  300  may be fused and coupled due to emission of a laser. Since the lens panel  200  is configured to allow light to pass therethrough, the laser emitted from the front side to the rear side passes through the lens panel  200  to be incident on the front surface of the housing  300 . Consequently, the rear surface of the lens panel  200  and the front surface of the housing  300  may be fused due to the laser. 
     Meanwhile, when the grille panel  100  and the lens panel  200  are coupled, the laser should be incident on the rear surface of the grille panel  100 . To this end, the coupling provision hole  370  is formed in the housing  300  so as to allow the laser emitted from the rear side to the front side to be incident on the rear surface of the grille panel  100  so that the rear surface of the grille panel  100  and the front surface of the lens panel  200  may be fused through the laser. 
     Meanwhile, as shown in  FIG.  10   , the housing  300  is coupled to the rear surface of the lens panel  200  through a peripheral portion  380  of the coupling provision hole  370 , and the grille panel  100  is disposed to face the coupling provision hole  370  of the housing  300  to be coupled to the front surface of the lens panel  200  so that the housing  300  and the grille panel  100  do not overlap each other in a front-rear direction. 
     As described above, since the grille panel  100  and the housing  300  do not overlap in the lens panel  200  in the front-rear direction, the grille panel  100  and the housing  300  may be easily fused to the lens panel  200  through laser fusing. That is, as can be seen from  FIG.  10   , when the grille panel  100  is fused to the lens panel  200 , a laser emitted from the rear side of the lens panel  200  avoids the housing  300  to be incident on the grille panel  100  so that the grille panel  100  may be fused to the lens panel  200 , and, when the housing  300  is fused to the lens panel  200 , a laser emitted from the front side of the lens panel  200  avoids the grille panel  100  to be incident on the housing  300  so that the housing  300  may be fused to the lens panel  200 . 
     Meanwhile, as another example, in the housing  300 , the peripheral portion  380  of the coupling provision hole  370  may be coupled to the rear surface of the lens panel  200 , and the housing  300  and the lens panel  200  may be coupled by an extending end portion  390  which extends from the rear surface of the lens panel  200  toward the peripheral portion  380  of housing  300  or extends from the peripheral portion  380  of housing  300  toward the rear surface of the lens panel  200 . Here, the extending end portion  390  may extend from the peripheral portion  380  of the housing  300  to be integrally formed with the housing  300  or may extend from the lens panel  200  to be integrally formed therewith. However, in order to aid understanding of the present disclosure in the following description, it is assumed that the extending end portion  390  is formed in the housing  300 . 
     That is, the extending end portion  390  of the housing  300  coupled to the rear surface of the lens panel  200  is disposed to be spaced in a width direction of the lens panel  200 , and the grille panel  100  is disposed between the extending end portions  390  of the housings  300  on the front surface of the lens panel  200  to be coupled to the lens panel  200  so that the grille panel  100  and the housing  300  do not overlap in the front-rear directions based on the lens panel  200 . Here, in the housing  300 , the extending end portion  390  is formed to be recessed in a side opposite to the lens panel  200 , and thus when light propagating in the lens panel  200  propagates to the recessed portion formed through the extending end portion  390 , the light is reflected to propagate to the front side so that emission efficiency of the light emitted through the lens panel  200  is provided. In addition, in the lens panel  200 , an optics portion  220  formed of a plurality of protrusions or grooves is formed in a portion matching the recessed portion formed by the extending end portion  390 , and thus the light is scattered due to the optics portion  220  so that a quantity of light emitted to the front side of the lens panel  200  may be further provided. When the optics portion  220  is formed at a position where the lens panel  200  and the grille panel  100  are in contact with each other or a position where the lens panel  200  and the housing  300  are in contact therewith, the optics portion  220  may act as a fusion inhibiting factor so that it is preferable that the optics portion  220  is formed in only the recessed portion between the extending end portions  390 . 
     The vehicle grille formed of the above described structure allows light to be turned on in the grille of the vehicle and to be softly spread from the rear side of the grille so that the grille is upgraded. In addition, the ease of a coupling of the grille panel  100 , the lens panel  200 , and the housing  300  forming the gr lie is provided so that work convenience and productivity are improved. 
     Although the specific forms of the present disclosure have been described and illustrated, those skilled in the art will appreciate that various alternations and modifications are possible without departing from the technical spirit of the present disclosure provided in the appended claims.