JP2010015929A - Vehicular signal lamp fitting - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular signal lamp fitting capable of solving problems such as giving an effect to a light distribution pattern due to light source light and its appearance in a vehicular signal lamp fitting including a lens body having a corner part with a large curvature radius, by improving the corner part. <P>SOLUTION: The lens body 10 of the vehicular signal lamp fitting is provided with three lens cuts 20, 20, 20 having cross-section nearly semicircular shape continuing to a reflection prism group 14 and with a part overlapped with a diffusion lens 18 in a thickness direction of the lens body 10, formed on an inside surface of a corner part 10A of the lens body 10. Hence, the lens body 10 does not have a part where high-brightness light of a light source 16 goes through, thus, the problems of giving an effect to the light distribution pattern due to high-brightness light of the light source 16 and its appearance can be solved. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicular signal lamp, and more particularly to a vehicular signal lamp such as a position light and a side marker light provided at a corner portion of a vehicle.

  Patent Document 1 discloses an example of a position light (clearance lamp) provided at a corner portion of a vehicle, and Patent Document 2 discloses an example of a side marker light provided at a corner portion of the vehicle. . Such position lights and side marker lights function as vehicle signal lamps.

  FIG. 7 shows an external view showing an example of the position light lens body 1, and FIG. 8 shows a horizontal cross-sectional view of the main part including the corner portion 1 </ b> A of the lens body 1. The lens body 1 shown in these drawings is formed in an L-shaped cross section along the shape of the front corner portion of the vehicle. A reflecting prism group 3 constituting the reflex reflector 2 is integrally formed on the inner surface of the surface 1B of the lens body 1 located on the side surface of the vehicle. Further, on the front side of the lens body 1 on the front side of the vehicle. A plurality of diffusion lenses 5 having a semicircular cross section for diffusing the irradiation light from the light source 4 of the position light are continuously formed on the outer surface of the positioned surface 1C.

  Therefore, according to this lens body 1, the external light emitted toward the side of the vehicle can be reflected by the reflecting prism group 3 of the reflex reflector 2, and the irradiation light from the light source 4 is diffused by the lens. 5 can be irradiated with a predetermined light distribution pattern from the front of the vehicle to the side.

By the way, some recent position light lens bodies 1 have a radius of curvature of the corner portion 1A of the lens body 1 set to be large in accordance with the streamline shape of the vehicle body or in design. Further, the reflecting prism group 3 of the reflex reflector 2 is formed by the same mold, but it is not possible to form all the reflecting prism groups including the reflecting prism group formed at the corner portion 1A by the same mold. This is difficult because the optical characteristics of the reflecting prism group cannot be maintained, and the direction in which the mold is extracted (in the direction of arrow A in FIG. 7) is restricted. Therefore, the reflecting prism group 3 is formed up to a limit position where the mold can be removed in the same direction while maintaining the optical characteristics of the reflecting prism group, that is, a position near the corner portion 1A of the lens body 1. Therefore, the corner portion 1A of the lens body 1 is not formed with a lens as shown in FIG. In addition, because of the mold, the reflex reflector 2 and the diffusing lens 5 cannot be formed on the same surface of the lens body 1, so that the reflex reflector 2 is formed on the inner surface of the lens body 1 and the diffusing lens 5. Is generally formed on the outer surface of the lens body 1.
JP-A-6-28906 JP 2000-216504 A

  However, since the lens body 1 of the vehicle signal lamp shown in FIGS. 7 and 8 does not have a lens at the corner portion 1A of the lens body 1, the light source light 6 directly emitted from the corner portion 1A has an abnormal bright spot. As observed. Therefore, the conventional lens body 1 affects the light distribution pattern of the position light, and the dark portion of the reflex reflector 2 is further emphasized by the high-intensity light source light 6 directly emitted from the corner portion 1A. For this reason, there is a drawback that it does not look good as a vehicle signal lamp. Further, when the light source is turned off, the light source is directly viewed through the corner portion 1A, so that the appearance is poor.

  The present invention has been made in view of such circumstances, and includes a lens body having a corner portion having a large radius of curvature, and by improving the corner portion, the light distribution pattern by the light source light is affected. It is an object of the present invention to provide a vehicle signal lamp that can solve the problem and the problem of appearance.

  In order to solve the above-mentioned problem, the invention described in claim 1 is a plate-like lens body formed in a substantially L-shaped cross-section so as to surround the light source, and sandwiching the corner portion of the lens body, A lens body in which a reflecting prism group of a reflex reflector is integrally formed on the inner side surface on the side, and a plurality of diffusing lenses having a substantially semicircular cross section are integrally formed on the outer side surface on the other side across the corner portion In the vehicle signal lamp provided at the vehicle corner portion, the inner surface of the corner portion of the lens body is continuous with the reflecting prism group, and the diffuser lens in the thickness direction of the lens body. Provided is a vehicular signal lamp characterized in that a plurality of lens cuts having a substantially semicircular cross section partially overlapped are formed.

  According to the first aspect of the present invention, the inner surface of the corner portion of the lens body has a substantially semicircular cross section that is continuous with the reflecting prism group and partially overlaps with the diffuser lens in the thickness direction of the lens body. Since a plurality of lens cuts are formed, the portion through which the light source light passes does not exist in the lens body, and thus the light distribution pattern caused by the light source light that passes through the lens body is affected. The problem can be solved.

  According to a second aspect of the present invention, the plurality of lens cuts are preferably flute cuts in which bowl-shaped lens portions are formed side by side.

  According to the second aspect of the present invention, since the lens cut at the corner portion is formed into a flute cut having a light diffusing action, the light source light emitted from the corner portion is diffused, and thereby the dark portion of the reflex reflector. It is possible to satisfactorily improve the problem of appearance that the light is further emphasized and the problem of appearance that the light source when extinguished can be directly viewed from the outside. Further, by forming the diffusing lens and the flute cut that overlap in the thickness direction of the lens body so that the respective edge portions overlap in a front view, the edge portion of the flute cut is hidden behind the edge portion of the diffusing lens. Because it disappears, it looks better.

  The reflex reflector and the flute cut are preferably formed of the same mold. That is, the manufacturing cost can be reduced by forming the reflex reflector and the flute cut with the same mold. In order to form a reflex reflector and a flute cut with the same mold, that is, to prevent undercuts, first, in order to form a reflex reflector with strict optical requirements, a reflection with a triangular cross section It is assumed that the mold is pulled out in the direction perpendicular to the prism. Therefore, the number of flute cuts and the shape of the semicircular cross section (the height of the mountain, the curvature, etc.) are set so that the flute cut is formed at the corner of the lens body even if the mold is pulled out in this direction. Yes. The flute cut has less stringent optical requirements than the reflex reflector, so it is easy to form the reflex reflector and the flute cut with the same mold by making the corner part a flute cut. Become.

  In addition, the direction of the tangent in the joint part of an adjacent flute cut shall have an inclination to the direction which does not produce an undercut from the said perpendicular direction or the said perpendicular direction, and provides a flute cut without producing an undercut Is possible.

  According to the vehicle signal lamp according to the present invention, the inner surface of the corner portion of the lens body of the vehicle signal lamp is continuous with the reflecting prism group and partially overlaps with the diffusion lens in the thickness direction of the lens body. Since a plurality of lens cuts having a substantially semicircular cross section are formed, the portion through which the light source light passes does not exist in the lens body, and therefore the problem of affecting the light distribution pattern by the light source light and the appearance problem Can be eliminated.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a vehicle signal lamp according to the present invention will be described in detail with reference to the accompanying drawings.

  1 is an external perspective view of a lens body 10 used for a vehicle position light (vehicle signal lamp), FIG. 2 is a perspective view showing an inner surface of the lens body 10, and FIG. FIG. 4 is an enlarged view of a main part of FIG.

  In general, this type of lens body 10 is provided in a portion that wraps around from the front to the side of the front corners 40A and 40A of the vehicle 40 as shown in FIG. The lens body 10 of the embodiment is an inner lens when viewed from the entire vehicle signal lamp, and a cover lens (not shown) is provided outside the inner lens. Similarly, the cover lens is formed in a shape that wraps around from the front of the front corner portions 40A, 40A of the vehicle 40 to cover the entire lens body 10. The lens body 10 is not limited to the inner lens, and may be a cover lens.

  As shown in FIGS. 1 to 5, the lens body 10 is formed in an L-shaped cross section along the shape of the front corner portions 40 </ b> A and 40 </ b> A of the vehicle 40. Further, in this lens body 10, a reflecting prism group 14 having a triangular cross section constituting the reflex reflector 12 as shown in FIG. 2 is integrally formed on the inner surface of the surface 10B located on the side surface side of the vehicle with the corner portion 10A interposed therebetween. Further, on the outer surface of the surface 10C of the lens body 10 located on the front side of the vehicle, a diffusing lens 18 having a semicircular cross section for diffusing the irradiation light from the light source 16 of the position light as shown in FIG. Are formed in succession. That is, the lens body 10 is a lens body in which the mounting surface of the reflex reflector 12 and the mounting surface of the diffusing lens 18 are formed adjacent to each other with the corner portion 10A interposed therebetween. The reflecting prism group 14 is formed up to a limit position where the mold can be removed in the same direction (the direction of arrow A in FIG. 3) while maintaining the optical characteristics of the reflecting prism group, that is, a position near the corner portion 10A of the lens body 10. Has been.

  Therefore, according to the lens body 10, the external light emitted toward the side of the vehicle can be reflected by the reflecting prism group 14 of the reflex reflector 12. Further, the light emitted from the light source 16 can be irradiated in a predetermined light distribution pattern from the front to the side of the vehicle by the diffusion action of the diffusion lenses 18, 18. The reflex reflector 12 is attached, for example, to reflect the irradiation light from the headlamp of another vehicle so that the other vehicle can recognize the presence of the own vehicle during parking.

  Incidentally, as shown in FIG. 3, the lens body 10 of the embodiment is connected to the reflecting prism group 14 on the inner side surface of the corner portion 10 </ b> A of the lens body 10, and with the diffusion lens 18 in the thickness direction of the lens body 10. A plurality of (three in the embodiment) lens cuts 20, 20, 20 having a substantially semi-circular cross section partially overlapping are formed.

  For this reason, in the lens body 10 of the embodiment, there is no portion through which the high-intensity light of the light source 16 passes, and thus the problem of affecting the light distribution pattern by the high-intensity light of the light source 16 and the appearance The problem can be solved.

  Further, as shown in FIG. 2, the three lens cuts 20, 20, and 20 are formed by flute cuts in which bowl-shaped lens portions are formed side by side.

  As described above, when the lens cuts 20, 20, and 20 of the corner portion 10A of the lens body 10 are formed by the flute cut having a light diffusion action, the light source light emitted from the corner portion 10A is diffused. Thereby, according to the lens body 10 of the embodiment, the problem of appearance that the dark part of the reflex reflector 12 is further emphasized and the problem of appearance that the light source at the time of extinction can be directly viewed from the outside are satisfactorily improved. it can.

  Further, as shown in FIG. 4, one diffusion lens 18A and one lens cut (flute cut) 20A that overlap in the thickness direction of the lens body 10 are formed so that the edge portions 19 and 21 overlap in a front view. As a result, when the lens body 10 is viewed from the front, the edge portions 21 and 21 of the lens cut 20A are hidden behind the edge portions 19 and 19 of the diffusing lens 18A, so that the appearance of the design is improved.

  Further, the reflex reflector 12 and the lens cuts (flute cuts) 20, 20, and 20 of the lens body 10 are formed of the same mold.

  Thus, the manufacturing cost can be suppressed by forming the reflex reflector 12 and the lens cuts 20, 20, and 20 with the same mold. In order to form the reflex reflector 12 and the lens cuts 20, 20, 20 with the same mold, that is, in order not to cause an undercut, first, to form the reflex reflector 12 with strict optical requirements. In addition, it is premised that the mold is pulled out in the direction perpendicular to the reflecting prism group 14 having a triangular cross section. Therefore, the number of lens cuts 20, 20, 20 is such that the lens cuts 20, 20, 20 are formed at the corner portion 10A of the lens body 10 even if the mold is pulled out in this direction (the direction of arrow A in FIG. 3). And a semicircular cross-sectional shape (mountain height, curvature, etc.) are set. The flute cut which is the lens cut 20 has less optical requirements than the reflex reflector 12. Therefore, the flute cut is used for the corner portion 10A, so that the reflex reflector 12 and the lens cut can be made with the same mold. 20 can be easily formed. Further, the light distribution of the position light is controlled by the lens cuts 20, 20, and 20.

  FIG. 6 is an enlarged cross-sectional view showing a main part of another embodiment of the lens body 30 of the vehicle signal lamp.

  In the description of the lens body 30 shown in the figure, the same or similar members as those of the vehicle lens body 10 shown in FIGS.

  The lens body 30 shown in FIG. 6 is substantially half cross-sectional in which the outer surface of the corner portion 10A of the lens body 10 is continuous with the diffusing lens 18 and partially overlaps with the reflex reflector 12 in the thickness direction of the lens body 10. Two circular lens cuts 32, 32, 32 are formed.

  Also in the vehicle lens body 30, since the portion through which the high-intensity light of the light source 16 (see FIG. 3) does not exist is present in the lens body 10, the problem of affecting the light distribution pattern by the high-intensity light, and the appearance The problem can be solved.

  Further, when the three lens cuts 32, 32, 32 are formed by the flute cut shown in FIG. 2, the light source light emitted from the corner portion 10A is diffused, so that the dark portion of the reflex reflector 12 is further emphasized. It is possible to satisfactorily improve the problem of appearance and the appearance problem that the light source at the time of extinction can be viewed directly from the outside.

  Further, if the diffusing lenses 18, 18... And the lens cuts (flute cuts) 20, 20, 20 of the lens body 10 are formed with the same mold, the manufacturing cost can be suppressed.

  In the embodiment, the position light has been described as the vehicular signal lamp. However, the position light is not limited thereto. For example, the lens bodies 10 and 30 of the embodiment can be used for the side marker light, The lens bodies 10 and 30 can also be used for the side marker light and position light.

It is an external appearance perspective view of the lens body for position lights of vehicles. It is the perspective view which showed the inner surface of the lens body shown in FIG. It is a horizontal sectional view of the lens body shown in FIG. It is a principal part enlarged view of the lens body shown in FIG. It is a schematic diagram of the lens body arrange | positioned at the front corner part of a vehicle. It is a principal part expanded sectional view which showed the lens body of other embodiment. It is an external view of the conventional lens body used for position lights of vehicles. It is a principal part horizontal sectional view containing the corner part of the lens body shown in FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Lens body, 1A ... Corner part, 2 ... Reflex reflector, 3 ... Reflection prism group, 4 ... Light source, 5 ... Diffuse lens, 6 ... Light source light, 10 ... Vehicle lens body, 10A ... Corner part, 12 ... Reflex reflector, 14 ... reflecting prism group, 16 ... light source, 18 ... diffuser lens, 19 ... edge, 20 ... lens cut, 21 ... edge, 30 ... vehicle lens body, 32 ... lens cut

Claims (2)

A plate-like lens body having a substantially L-shaped cross section surrounding a light source, and a reflecting prism group of a reflex reflector is integrally formed on an inner surface on one side across a corner portion of the lens body In addition, in the vehicle signal lamp provided in the vehicle corner portion, using a lens body in which a plurality of diffusion lenses having a substantially semicircular cross section are integrally formed on the outer surface on the other side across the corner portion,
On the inner surface of the corner portion of the lens body, there are a plurality of lens cuts having a substantially semicircular cross section that is continuous with the reflecting prism group and partially overlaps the diffuser lens in the thickness direction of the lens body. A vehicle signal lamp characterized by being formed.   The vehicular signal lamp according to claim 1, wherein the plurality of lens cuts are flute cuts in which bowl-shaped lens portions are formed side by side.

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