JP5092180B2 - VEHICLE SIGNAL LIGHT AND COVER LENS USED FOR VEHICLE SIGNAL LIGHT - Google Patents

Description

  The present invention relates to a vehicular signal lamp that includes a cover lens, and more particularly to a vehicular signal lamp that can highlight and visually recognize a character lens cut that represents a predetermined character shape formed on the cover lens.

  Conventionally, a vehicular signal lamp (a turn signal lamp or the like) including an outer lens having a thick lens portion representing a pattern or the like is known (see, for example, Patent Document 1).

  FIG. 3 is a perspective view for explaining the configuration of the vehicle signal lamp described in Patent Document 1. As shown in FIG.

  As shown in FIG. 3, the vehicle signal lamp described in Patent Document 1 includes a light source 10 ′, a reflector 20 ′, an outer lens 30 ′ that transmits reflected light that is emitted from the light source 10 ′ and reflected by the reflector 20 ′, and the like. The outer lens 30 'is formed with a thick lens portion 31' representing a pattern or the like.

In the vehicular signal lamp described in Patent Document 1, the thick lens portion 31 ′ and the other outer lens 30 ′ are made to shine differently by the action of the thick lens portion 31 ′. The lens portion 31 ′ is made visible.
JP 2001-256810 A

  In general, a vehicle signal lamp is required by law to satisfy a predetermined standard regarding light distribution. For this reason, in the case where the vehicle signal lamp described in Patent Document 1 is applied to a lamp that performs light distribution control by a reflector, in order to satisfy the predetermined standard (in consideration of moldability at the time of injection molding of the outer lens) Therefore, for example, the thickness of the thick lens portion 31 ′ does not affect the predetermined standard with respect to the thickness of the base portion of the outer lens formed with a thickness of about 2.5 to 3 mm (for example, about 0.1 mm). 3 mm).

  However, in the vehicle signal lamp described in Patent Document 1, when the thickness of the thick lens portion 31 ′ is suppressed, the radius of curvature of the thick lens portion 31 ′ (appears in the cross section of the thick lens portion 31 ′). The appearance of the thick lens portion 31 ′ is blurred due to an increase in the radius of curvature of the lens surface, and the contour of the thick lens portion 31 ′ (pattern represented) can be emphasized for visual recognition. There is a problem that it becomes difficult (design is not noticeable).

  Even if the thickness of the character lens cut (thick lens portion or the like) representing a predetermined character shape such as a pattern is suppressed to a thickness that does not affect the predetermined standard regarding light distribution, the character lens The appearance of the cut (predetermined character shape such as a pattern represented by the character) is not blurred, and the outline of the character lens cut (predetermined character shape such as the pattern represented by the character) is emphasized and visually recognized (to make the design stand out) An object of the present invention is to provide a vehicular signal lamp.

  In order to solve the above problems, the invention according to claim 1 is directed to a vehicle signal lamp including a cover lens that is disposed so as to cover a light source and transmits reflected light that is emitted from the light source and is subjected to light distribution control by a reflector. In this case, a character lens cut representing a predetermined character shape and a rimming lens cut extending along an outline of the character lens cut are formed on the front surface or the back surface of the cover lens. The lens cut for use is set to a thickness that satisfies a predetermined standard for light distribution.

  According to the first aspect of the present invention, the outline of the character lens cut is formed with an edge lens cut extending along the outline. Therefore, according to the first aspect of the present invention, the thickness of the character lens cut (thick lens portion or the like) representing a predetermined character shape such as a pattern is such that it does not affect the predetermined standard for light distribution. Even if suppressed, the appearance of the character lens cut (predetermined character shape such as the pattern represented) is not blurred, and the outline of the character lens cut (predetermined character shape such as the pattern represented) is emphasized and visually recognized. (To make it stand out in terms of design).

  According to a second aspect of the present invention, in the first aspect of the present invention, the rimming lens cut is a flute cut.

  According to the second aspect of the present invention, an edge lens cut as a flute cut extending along the contour is formed on the contour of the character lens cut. For this reason, according to the second aspect of the present invention, the thickness of the character lens cut (thick lens portion or the like) representing a predetermined character shape such as a pattern does not affect the predetermined standard regarding light distribution. Even if suppressed, it is possible to highlight the outline of the lens cut for the character (predetermined character shape such as a pattern represented) and make it visually visible (make it stand out in terms of design).

  According to a third aspect of the present invention, there is provided a cover lens used in a vehicular signal lamp that is disposed so as to cover a light source and transmits reflected light that is emitted from the light source and is subjected to light distribution control by a reflector. Is formed with a character lens cut representing a predetermined character shape and an edge lens cut extending along an outline of the character lens cut. The character lens cut and the edge lens cut are predetermined standards relating to light distribution. It is characterized by being set to a thickness that satisfies the above.

  According to the third aspect of the present invention, the outline of the character lens cut is formed with an edge lens cut extending along the outline. For this reason, according to the third aspect of the present invention, the thickness of the character lens cut (thick lens portion or the like) representing a predetermined character shape such as a pattern does not affect the predetermined standard regarding light distribution. Even if suppressed, the appearance of the character lens cut (predetermined character shape such as the pattern represented) is not blurred, and the outline of the character lens cut (predetermined character shape such as the pattern represented) is emphasized and visually recognized. (To make it stand out in terms of design).

  According to the present invention, even if the thickness of the character lens cut (thick lens portion or the like) representing a predetermined character shape such as a pattern is suppressed to a thickness that does not affect the predetermined standard regarding light distribution, The character lens cut (predetermined character shape such as a pattern represented) is emphasized and visually recognized without making the appearance of the lens cut (predetermined character shape such as a pattern represented) appear blurred (designed) Therefore, it is possible to provide a vehicular signal lamp that can be used.

  Hereinafter, a vehicle signal lamp according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a front view of a vehicular signal lamp that is an embodiment of the present invention. 2 is a cross-sectional view taken along line AA of the vehicle signal lamp shown in FIG.

  The vehicle signal lamp 100 according to this embodiment is applied to a vehicle signal lamp such as a turn signal lamp, and is disposed so as to cover the light source 10 and the light source 10 as shown in FIGS. 1 and 2. A reflector 20 for light distribution control, a cover lens 30 and the like are provided.

  The light source 10 is, for example, an incandescent light bulb, and the reflector 20 is, for example, a reflecting surface that reflects light emitted from the light source 10 and controls light distribution so as to satisfy a predetermined standard regarding light distribution. For example, as shown in FIGS. 1 and 2, the cover lens 30 is an outer lens (or inner lens) that transmits reflected light emitted from the light source 10 and subjected to light distribution control by the reflector 20.

  As shown in FIG. 1, arc-shaped lens cuts 31a and 32a, linear lenses as character lens cuts representing a predetermined character shape are formed on the back surface (the surface on the side facing the light source 10 or the front surface) of the cover lens 30. Bordering lens cuts 31b, 32b, 33b extending along the contours of the cut 33a and the lens cuts 31a, 32a, 33a are formed.

  The predetermined character shape is not limited to the arc-shaped lens cuts 31a and 32a and the linear lens cut 33a, and may be other geometric patterns or other various patterns, for example.

  The arc-shaped lens cut 31a (the same applies to the arc-shaped lens cut 32a) is a cylindrical lens cut, for example, as shown in FIGS. 1 and 2, extends in an arc shape, and swells toward the light source 10 side. It has a lens surface. FIG. 1 shows an example in which three arc-shaped lens cuts 31a having different radii are formed concentrically at a predetermined interval.

  The arc-shaped lens cut 31a (same for the arc-shaped lens cut 32a) satisfies the predetermined standard for light distribution (and also considers the moldability during the injection molding of the cover lens 30), as shown in FIG. In addition, on the base portion of the outer lens formed with a thickness h1 of about 2.5 to 3 mm, for example, the thickness h2 and the width w1 satisfy a predetermined standard for light distribution (for example, h2 = 0.3 mm) and width. (For example, w1 = 2 mm).

  As shown in FIG. 1, the linear lens cut 33 a is a cylindrical lens cut, and has a lens surface that extends linearly in the vertical direction and swells toward the light source 10. FIG. 1 shows an example in which twelve linear lens cuts 33a are formed adjacent to each other.

  The linear lens cut 33a, like the arc-shaped lens cuts 31a and 32a, satisfies a predetermined standard regarding light distribution (and also considers moldability during injection molding of the cover lens 30), so that the thickness h2 and the width w1 are The thickness (for example, h2 = 0.3 mm) and the width (for example, w1 = 2 mm) satisfying a predetermined standard for light distribution are set (see FIG. 2).

  In the present embodiment, the lens cuts 31a, 32a, and 33a (the arc shape and linear shape that they represent) are emphasized and visually recognized without making the appearance of the lens cuts 31a, 32a, and 33a blur (designed to stand out). Therefore, as shown in FIG. 1, edge cutting lens cuts 31b, 32b, and 33b extending along the contours are formed on the respective contours of the lens cuts 31a, 32a, and 33a.

  As shown in FIGS. 1 and 2, the lens cut 31b for edging (also the lens cut 32b for edging) is a lens cut called a so-called flute cut having a cylindrical shape, and has an outline of the lens cut 31a having an arc shape. It has a lens surface that extends along the light source 10 side.

  The lens cut 31b for edging (the same applies to the lens cut 32b for edging) has a radius of curvature of the lens surface (the radius of curvature of the lens surface appearing in the cross section as shown in FIG. 2) of the lens surface of the lens cut 31a having an arc shape. It is set smaller than the radius of curvature.

  Further, as shown in FIG. 2, the rimming lens cut 31b (similarly to the rimming lens cut 32b) satisfies a predetermined standard regarding light distribution (and also considers moldability during the injection molding of the cover lens 30). ), The thickness h2 and the width w2 are set to a thickness (for example, h2 = 0.3 mm) and a width (for example, w2 = 0.3 mm) that satisfy a predetermined standard for light distribution. The rimming lens cut 31b (the same applies to the rimming lens cut 32b) only needs to be set on the entire circumference or a part of the arc-shaped lens cut 31a.

  The rimming lens cut 33b, like the rimming lens cuts 31b and 32b, is a lens cut called a so-called flute cut having a cylindrical shape, and extends along the contour of the linear lens cut 33a as shown in FIG. In addition, the lens surface bulges toward the light source 10 side.

  The edge lens cut 33b is set such that the radius of curvature of its lens surface is smaller than the radius of curvature of the lens surface of the linear lens cut 33a, similar to the edge lens cuts 31b and 32b.

  Further, the rimming lens cut 33b, like the rimming lens cuts 31b and 32b, satisfies a predetermined standard regarding light distribution (and also considers moldability at the time of injection molding of the cover lens 30), and has a thickness h2 and a width. The thickness (for example, h2 = 0.3 mm) and the width (for example, w2 = 0.3 mm) are set so that w2 satisfies a predetermined standard for light distribution (see FIG. 2). The rimming lens cut 33b only needs to be set on the entire circumference or a part of the linear lens cut 33a.

  According to the vehicular signal lamp 100 having the above-described configuration, the contours of the arc-shaped lens cuts 31a and 32a and the linear lens cut 33a as the lens cut for the character have a border lens cut as a flute cut extending along the contour. 31b, 32b, and 33b are formed. Therefore, according to the vehicular signal lamp 100 of the present embodiment, the thickness of the lens cuts 31a, 32a, 33a representing a predetermined character shape (arc shape, linear shape, etc.) does not affect the predetermined standard regarding light distribution. Even if the thickness is suppressed to a certain level, the lens cuts 31a, 32a, and 33a (the arc shape, linear shape, and the like) are not blurred when the light source 10 is turned on or off. The contours 31b, 32b, and 33b of the cuts 31a, 32a, and 33a (represented by an arc shape, a straight line shape, and the like) can be highlighted and visually recognized (conspicuous in terms of design).

  In the above embodiment, each lens cut 31a, 32a, 33a has been described as having a lens surface that swells toward the light source 10, but the present invention is not limited to this. For example, each lens cut 31a, 32a, 33a may have a lens surface that is recessed toward the light source 10 side.

  In the above-described embodiment, the rimming lens cuts 31b, 32b, and 33b have been described as cylindrical so-called flute cuts, but the present invention is not limited to this. For example, the lens cuts 31b, 32b, and 33b for edging may be lens cuts having a triangular cross section, or may be lens cuts having other shapes.

  The above embodiment is merely an example in all respects. The present invention is not construed as being limited to these descriptions. The present invention can be implemented in various other forms without departing from the spirit or main features thereof.

It is a front view of the signal lamp for vehicles which is one embodiment of the present invention. It is AA sectional drawing of the signal lamp for vehicles shown in FIG. It is a perspective view of the conventional signal lamp for vehicles.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Signal lamp for vehicles, 10 ... Light source, 20 ... Reflector, 30 ... Cover lens, 31a ... Lens cut, 31b ... Lens cut, 32a ... Lens cut, 32b ... Lens cut, 33a Linear lens cut 33a Lens cut, 33b ... Lens cut

Claims (3)

In a vehicular signal lamp provided with a cover lens that is disposed so as to cover a light source and transmits reflected light that is irradiated from the light source and is subjected to light distribution control by a reflector,
On the front or back surface of the cover lens, a character lens cut representing a predetermined character shape and an edge lens cut extending along the outline of the character lens cut are formed,
The vehicle signal lamp, wherein the character lens cut and the rimming lens cut are set to a thickness that satisfies a predetermined standard for light distribution.   The vehicular signal lamp according to claim 1, wherein the rimming lens cut is a flute cut. In a cover lens used for a vehicle signal lamp, which is arranged so as to cover a light source and transmits reflected light emitted from the light source and subjected to light distribution control by a reflector,
On the front or back surface, a character lens cut representing a predetermined character shape and an edge lens cut extending along the outline of the character lens cut are formed,
The cover lens used for a vehicle signal lamp, wherein the character lens cut and the edge lens cut are set to a thickness that satisfies a predetermined standard for light distribution.

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