Turning light

By incorporating a recess surface in the mirror surface behind the lens sections, the reflected image is contained, preventing design disruption and maintaining the aesthetic integrity of vehicle turning lamps.

DE112016000952B4Active Publication Date: 2026-06-11MURAKAMI CORP

Patent Information

Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
MURAKAMI CORP
Filing Date
2016-02-04
Publication Date
2026-06-11

AI Technical Summary

Technical Problem

The reflection of lens segments in a light-guiding lens creates a reflected image that disrupts the decorative function and design of vehicle turning lamps, especially when viewed from different angles, due to differences in curvature between the actual lens segments and their reflected image.

Method used

A recess surface is formed behind the lens sections in the mirror surface, with a width greater than the lens sections, ensuring the reflected image is contained within the recess, maintaining the decorative function and preventing design deterioration.

Benefits of technology

The reflected image of the lens segments is maintained within the recess surface, preserving the original design and aesthetic appearance of the turning lamp regardless of viewing angle, enhancing the decorative function.

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Abstract

Turning lamp (18) for a vehicle, wherein the turning lamp (18) comprises: a light-guiding lens (30), a mirror surface (36) arranged behind the light-guiding lens (30) when viewed from a viewpoint side from which the turning lamp (18) is viewed, and a light source (33) which causes light to enter the light-guiding lens (30), wherein: the turning lamp (18) further has a recess (34) which, when viewed from the viewing point side, is formed behind the light-guiding lens (30) in such a way that it extends in a direction of extension of the light-guiding lens (30); the light-guiding lens (30) is arranged in the recess (34); the recess (34) has the mirror surface (36); the light-guiding lens (30) includes a lens section (40) which is designed on a front surface of the light-guiding lens (30) when viewed from the viewpoint side such that it extends in a light-guiding direction of the light-guiding lens (30); the mirror surface (36) includes a recessed surface (38) which is formed behind the lens section (40) when viewed from the viewpoint side along the lens section (40); the recess surface (38) is formed in a central area in a short direction of the recess (34); and the recess surface (38) is designed such that it has a width in a short direction thereof, wherein the width is greater than a width in a short direction of the lens section (40) when viewed from the viewpoint side.
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Description

Technical field

[0001] The present invention relates to a turning lamp intended to be mounted in a vehicle, wherein a deterioration in the design of the turning lamp is prevented by a reflected image of lens sections in a light-guiding lens. background

[0002] The turning lights for vehicles are those described in patent documents 1 and 2, which are listed below. These turning lights will now be described. The reference numerals in parentheses are those used in patent documents 1 and 2. The turning lamp described in patent document 1 comprises a light-guiding lens (40), an aluminum vapor deposition layer (50) arranged on the circumference and rear side of the light-guiding lens (40) when viewed from the side from which the turning lamp is viewed, and a light source (30) that causes light to enter the light-guiding lens (40). Reflection steps (43) are formed in the vicinity of a light-exit surface (42) at one end in a light-guiding direction on a rear surface of the light-guiding lens (40).Light emitted from the light source (30) is guided inside the light-guiding lens (40) and emitted towards the rear of the vehicle at the light-exit surface (42). A portion of the light guided through the interior of the light-guiding lens (40) is reflected by the reflectors (43) and emitted towards the front and side of the vehicle. An inlet section (52) of the aluminum vapor deposition layer (50) reflects light exiting the rear of the reflectors (43) of the light-guiding lens (40) forward. This inlet section is located at the rear of the light-guiding lens (40) when viewed from the side of the vehicle from which the cornering lamp is viewed. This forward reflection increases the efficiency of the cornering lamp's light output, resulting in a bright light emission.

[0003] The turning lamp described in patent document 2 comprises a light-guiding lens (8), a light-scattering reflective surface (7b) arranged on the rear side of the light-guiding lens (8) when viewed from the side from which the turning lamp is viewed, and a light source (6b) that causes light to enter the light-guiding lens (8). The light-scattering reflective surface (7b) is formed in a recess of an inner housing (7), with the light-guiding lens (8) closing an opening of the recess. A surface of the light-guiding lens (8) is textured, thereby forming a light-scattering surface (8a) on the surface.Light emitted from the light source (6b) is reflected in such a way that it is scattered by the light-scattering reflective surface (7b) and also by the light-scattering surface (8a), passes through the light-guiding lens (8) and is emitted outwards as uniform and soft light.

[0004] Publication JP 2011-54523 A describes a side indicator light with a light guide lens body arranged such that its front surface is exposed by a laterally extending opening provided on an outer side wall of a side mirror housing. A plurality of LEDs are arranged opposite a light-incident end section of the light guide lens body. The opening and the light guide lens body are narrow, and the LEDs are arranged parallel in one direction of the lamp's depth. The light emission from all LEDs falls onto the light guide lens body by forming a thick wall in the lamp's depth direction at the light-incident end section of the lens body.

[0005] Document US 2010 / 0309677A1 describes an LED light source. The LED light source is mounted at the base end of a light guide lens, which includes a distal end curved toward the rear of a vehicle and a functional light distribution section incorporating light diffusion steps so that light from the LED light source diffuses toward one side of the vehicle. A design light distribution section is provided between the LED light source and the functional light distribution section. This design section features a linear optical step on the rear side of the light guide lens and extends along the lens's longitudinal axis.

[0006] German patent application DE 10 2004 055 015 A1 describes a side indicator light for an external rearview mirror. The side indicator light comprises a housing with a light-emitting aperture that extends approximately horizontally from the side of the vehicle to the outside. At least one light guide runs across the light-emitting aperture. Light from a light source is coupled into the vehicle-side end of the light guide and propagates longitudinally. The portion of the light arriving at the opposite end is emitted obliquely backwards in the direction of travel.

[0007] The publication DE 203 06 739 U1 describes a vehicle light, in particular for motor vehicles, with an elongated light guide body and with at least one light source, the light of which is coupled into one of the end faces of the light guide body in such a way that it spreads in the longitudinal direction within it.

[0008] The publication DE 10 2007 048 841 A1 describes a direction change indicator lamp which is equipped with a base housing and a light source unit which is equipped with a first to fourth light source and is housed in the base housing.

[0009] Publication JP 2013 - 191 412 A describes a lamp comprising an LED as a light source and a light guide for emitting light from a light-emitting surface along a direction of extension. List of citation points for patent literature Patent Publication 1: Published Japanese patent JP 2013-75608A Patent Publication 2: Published Japanese Patent JP 2010 - 100 080 A Summary of the invention: Technical problem

[0010] As described, for example, in connection with the reflection stages (43) in patent document 1, a light-guiding lens can have the structure of a lens or the structure of a prism, each provided with elevations and depressions called lens sections (which are not fine elevations and depressions like those of a texture, but larger elevations and depressions). Lens sections provided on a light-guiding lens offer a decorative function, causing the lens sections themselves to appear luminous when illuminated by the light from a turn signal lamp or by external light, as well as a practical function, refracting and reflecting the light from a turn signal lamp in a direction different from the direction of light transmission, so that the reflected light can be seen from the front or side of the vehicle.In a cornering lamp that incorporates a light-guiding lens with lens segments, if a mirror surface is positioned behind the light-guiding lens, a reflected image of the lens segments can be reflected onto the mirror surface. In this case, at a higher position where the lens segments are viewed almost horizontally, the reflected image of the lens segments on the mirror surface is essentially hidden behind the actual lens segments and therefore cannot be perceived. However, if the viewing position is moved up or down from that position, the reflected image of the lens segments moves relative to the actual lens segments to the top or bottom, and therefore appears to protrude from them.As a result, it was found that the original outline of the lens segment appears as if it were destroyed (for example, the actual lens segments and their reflected image appear as two separate lines), which may impair the decorative function of the lens segments. In particular, where the lens segments are curved along a curve in a light-guiding direction of the lens (curvature along a shape of an outer circumferential surface of the mirror body), the curvature of the actual lens segments and that of the reflected image of the lens segments projecting from the top or bottom of the actual lens segments can be very different. Consequently, it was found that the original outline of the lens segments appears as if it were largely destroyed, which can severely impair their decorative function.This disadvantage occurs both when the turning light is switched on and when the turning light is switched off (when exposed to outside light).

[0011] The present invention is intended to solve the aforementioned problem and provide a turning lamp that prevents a reflected image from impairing a decorative function of the lens sections, thereby preventing deterioration in the design of the turning lamp due to the reflected image. Solution to the problem

[0012] This problem is solved by the subject matter of the independent claim. Further embodiments are the subject matter of the dependent claims. In the present invention, in which lens sections are formed in a lens conduction lens along a light-guiding direction of the lens, a recess surface is formed in a mirror surface behind the lens sections along the lens sections, causing a reflected image of the lens sections to appear as if it were held in the recess surface. This ensures that even if the position from which the turning lamp is viewed is slightly moved in a short direction of the lens sections, the reflected image of the lens sections is retained in the recess surface.Accordingly, because the reflected image of the lens segment is held within the recess surface when the viewing position of the turn signal lamp is moved in the short direction of the lens segments, movement of the reflected image of the lens segments in the short direction relative to the actual lens segments is counteracted, compared to a case where no recess surface is provided. As a result, the decorative function of the lens segments is not impaired, thus preventing any deterioration of the design due to the reflected image of the lens segments.

[0013] One aspect of a turning lamp according to the present invention is a turning lamp for a vehicle, wherein the turning lamp comprises: a light-guiding lens, a mirror surface arranged behind the light-guiding lens when viewed from a viewing point side from which the turning lamp is viewed, and a light source causing light to enter the light-guiding lens, wherein: the light-guiding lens comprises a lens section configured to extend in a light-guiding direction of the light-guiding lens; the mirror surface comprises a recess surface formed behind the lens section along the lens section when viewed from the viewing point side; and the recess surface is configured to have a width in a short direction thereof.where the width is greater than the width in a short direction of the lens section when viewed from the point of view. Accordingly, the recess surface in the mirror surface, which is arranged behind the lens section along the lens section, is designed and therefore has a width greater than that of the lens section, which is why a reflected image of the lens section extends in the width direction of the recess surface and thus appears as if it were contained within the recess surface. Even if the position from which the turn signal lamp is viewed is slightly moved in the short direction of the lens section,The reflected image of the lens segment therefore remains within the recess surface. This prevents the reflected image from moving in the short direction relative to the actual lens segment, compared to a case without a recess surface. As a result, the decorative function of the lens segment is not affected by the reflected image, thus preventing any deterioration in the design of the turn signal lamp. Furthermore, the recess surface of the mirror surface is designed with a width greater than that of the lens segment, allowing the image of the lens segment reflected from the recess surface to appear as if it protrudes outwards in the width direction of the actual lens segment. Consequently,that the reflected image appears on opposite sides in the latitude direction of the actual lens section, providing a three-dimensional appearance of the lens section through the actual lens section and the reflected image. Even when the image reflected from the recess surface appears on opposite sides in the latitude direction of the actual lens section in said manner, if the position from which the turn signal lamp is viewed is moved in the short direction of the lens section, a movement of the reflected image of the lens section in the short direction of the lens section relative to the actual lens section is counteracted, thus preventing the decorative function of the lens section from being impaired.and which also counteracts a deterioration in the design due to the reflected image of the lens section. The degree of outward projection in the width direction of the actual lens section of the image of the lens section reflected from the recess surface can be adjusted as desired. In particular, the degree of projection can preferably be selected to be 0.1 to 5 mm on each of the opposite sides in the short direction of the lens section, and more preferably 0.5 to 2 mm on each of the opposite sides. In an embodiment yet to be described, the degree of projection is selected to be, for example, 1 mm on each of the opposite sides. Note that in the angled lamp described in patent document 1, an aluminum vapor deposition surface, which is provided by the insertion section (52),The surface located behind the light-guiding lens (40), when viewed from the side of the viewing point from which the turning lamp is viewed, is a flat surface and not a recessed surface. Furthermore, the recessed surface (7b) of the turning lamp described in patent document 2 is a light-scattering reflective surface and not a mirror surface, and the surface (8a) of the light-guiding lens (8) is a textured, light-scattering surface and is not provided with lens sections.

[0014] In a further aspect of the present invention, the light-guiding lens includes an auxiliary lens at each of the outer surface positions on opposite sides in the short direction of the lens section when viewed from the point of view along the lens section, wherein the auxiliary lens is either not provided with any lens section or is provided with a lens section that causes less attenuation in the light-guiding direction compared to the lens section. This prevents an end face in a short direction of the light-guiding lens from appearing as if it were exactly outside each of the opposite sides in the short direction of the lens section, thus making it possible to make the lens section clearly visible and aesthetically pleasing.

[0015] In another aspect of the present invention, the auxiliary lens includes a light inlet through which light from the light source enters, and a light outlet through which the light entering at the light inlet and passing through the auxiliary lens is emitted. Since the auxiliary lens is either not provided with any lens section or is provided with a lens section that causes less attenuation in the direction of light transmission, it is possible to efficiently guide the light entering at the light inlet with less attenuation and to emit it at the light outlet, thereby emitting bright light from the cornering lamp towards the rear of the vehicle. As a consequence, flexibility in the design of the light-guiding lens can also be ensured.

[0016] In a further aspect of the present invention, the mirror surface includes an auxiliary reflection surface arranged such that it extends from each of its positions on opposite outer sides in the short direction of the lens section when viewed from the point of view, wherein at least a portion of the lens section is located on a front side relative to the auxiliary reflection surfaces when viewed from the point of view. The auxiliary reflection surfaces include surfaces that are inclined outwards relative to each other in the short direction of the lens sections.Here, "tilted outwards relative to each other" indicates the direction in which the back surfaces of the respective surfaces are oriented relative to each other, which is the opposite of "tilted inwards relative to each other," indicating the direction in which the respective surfaces are oriented relative to each other. Accordingly, the appearance of the reflected image of the lens section on the part of the mirror surface at any external position on opposite sides in the short direction of the recess surface can be effectively counteracted, making it possible to design the actual lens section in such a way that it appears clearly visible.

[0017] In yet another aspect of the present invention, the recess surface is a curved surface. Accordingly, the reflected image of the lens section is magnified in the short direction of the lens section by the curved surface, with the actual lens section and the magnified reflected image overlapping, thereby making it possible to produce a distinct pattern of the lens section. Brief description of the drawing Fig. 1 is a diagram of an end surface of the turning lamp of Fig. 3 shows a cut at the position indicated by arrows BB and shows a position of the turning lamp when the turning lamp is mounted in a mirror body and the mirror body is in a use position. Fig. Figure 2 is a rear surface view of a door mirror for the right side of a vehicle with the cornering light of Fig. 3 (the rear surface is a surface that is oriented towards the front of the vehicle when the mirror body is in the use position). Fig. Figure 3 is a front view illustrating an embodiment of a turning lamp according to the present invention and shows a reference position of the turning lamp as such. Fig. 4 is a perspective exploded view of the turning lamp in Fig. 3. Fig. 5 is a diagram of an end surface of the turning lamp of Fig. 3 at a cut at the position indicated by arrows AA. Fig. Figure 6 is an enlarged view of a portion of a lens section located in Fig. 3 is labelled C. Fig. 7A is a front view showing a photograph of an actual product, the turning lamp from Fig. 3 (where an outer cover is omitted in the illustration). Fig. 7B is an enlarged partial front view showing a photograph of the actual product, the turning lamp from Fig. 7A (where an outer cover is omitted in the illustration). Fig. 7C is an enlarged partial front view showing a photograph of an actual product, the turning lamp from Fig. 7A when viewed from a position above that in Fig. 7B ((where an outer cover is omitted in the illustration). Fig. Figure 8A is a front view showing a photograph of a light-guiding lens in the actual product of the turning lamp from Fig. 7A, wherein a silver band is applied to the entire rear surface thereof (whereby an outer cover is omitted in the illustration), as a comparative example for the turning lamp of Fig. 7A. Fig. 8B is an enlarged partial front view showing a photograph of the actual product, the turning lamp from Fig. 8A (with an outer cover omitted). Fig. 8C is an enlarged partial front view showing a photograph of the actual product, the turning lamp from Fig. 8A when viewed from a position above that in Fig. 8B (where an outer cover is omitted). Fig. 9 is a diagram illustrating a further embodiment of a recess surface shape and is a diagram of an end surface when cut at a position that is the same as in Fig. 1 is. Fig. 10 is a diagram illustrating a further embodiment of the shape of the recess surface and is a diagram of an end surface when cut at a position that is the same as in Fig. 1 is. Fig. Figure 11 is a diagram illustrating a further embodiment of a position at which a mirror surface is arranged, and is a diagram of an end face upon a section at a position that is the same as in Figure 11. Fig. 1 is. Description of embodiments

[0018] The following describes embodiments of the present invention. Fig. Figure 2 shows a door mirror 10 for the right side of a vehicle, on which a turning lamp according to the present invention is mounted. The door mirror 10 comprises a mirror base 12, which is fixed to a body of the vehicle (right door, not shown), and a mirror body 14, which is pivotably attached to and supported by the mirror base 12 such that it can be moved between a position in use and a storage position. The mirror body 14 comprises a mirror housing 16 in which a frame, an electrical storage unit, and a mirror surface angle adjustment actuator supported by the frame, a mirror holder supported by the mirror surface angle adjustment actuator such that a mirror surface angle can be adjusted, a mirror plate held firmly by the mirror holder (all not shown), and a turning lamp 18 are received and arranged.The mirror housing 16 comprises a bezel 19, an upper cover 20, and a lower cover 22. The bezel 19 forms a side of the mirror housing 16 opposite the front surface (the surface facing the rear of the vehicle when the mirror body 14 is in the operating position) and allows the mirror plate, held by the mirror holder, to be received and thus positioned in a recess that opens towards the front surface. The upper cover 20 and the lower cover 22, which form an outer outline of the mirror housing 16, are covered on the rear side of the bezel 19 and are therefore fitted there. The upper cover 20 forms the upper part of the outer outline, while the lower cover 22 forms the lower part of the outer outline.In an upper zone of the lower cover 22, an opening 26 is formed as a cutout, which causes an outer cover 24 of the cornering lamp 18 to be exposed to the outside. The opening 26 extends horizontally continuously from a rear surface (surface oriented towards the front of the vehicle when the mirror body 14 is in the operating position) of the mirror housing 16 to a side surface (surface oriented towards the side of the vehicle when the mirror body 14 is in the operating position) of the mirror housing 16.The turning lamp 18 is screwed onto and fitted to the rear surface of the cover 19, whereupon the lower cover 22 is placed onto a lower part of the rear surface of the cover 19 and thus fitted into place, whereupon the upper cover 20 is placed onto an upper part of the rear surface of the cover 19 and fitted into place, thereby attaching the mirror housing 16 to the mirror body 14. At this time, a projection 24a of the outer cover 24 of the turning lamp 18 is exposed outwards from the opening 26. The outer cover 24 is designed to curve horizontally along a curved surface of the mirror housing 16. Turn signal light emitted from an exposed surface of the turning lamp 18 can be viewed from the entire area extending from the front to the right rear of the vehicle.

[0019] The turning lamp 18 will now be described. Fig. Figure 3 is a front view of the turning lamp 18 by itself, while Fig. Figure 4 shows a perspective exploded view of the turning lamp 18. The components of the turning lamp 18 are shown based on Fig. The turning lamp 18 is described in section 4. It comprises a lamp housing 28, which is made of a non-transparent plastic material, as well as a light-guiding lens 30 and the outer cover 24, each made of a transparent plastic material, such as PMMA resin. The lamp housing 28 forms a retaining section for the light-guiding lens 30. The outer cover 24 forms a cover for the light-guiding lens 30.

[0020] A front surface of the lamp housing 28 is formed in a horizontally elongated and essentially rectangular shape. The lamp housing 28 curves in a long direction (longitudinal direction) along the curved surface of the mirror housing 16 and is continuous from a surface oriented towards the front of the vehicle to a surface oriented towards the side of the vehicle when the mirror body 14 is in the operating position. An end of the lamp housing 28, which is close to the body of the vehicle, bulges in a short direction (upward-downward direction when mounted on the vehicle) and thus forms a bulge 28a for attaching a circuit board 32.In the front surface (surface oriented towards the viewing side from which the cornering lamp 18 is viewed) of the lamp housing 28, a recess 34 is formed for receiving the light-guiding lens 30 along its long direction (essentially the horizontal direction when mounted on the vehicle). A reflective film 31 made of a metal such as aluminum or chromium is formed on a surface of the recess 34, for example by vapor deposition or plating, thereby forming a continuous mirror surface 36. Fig. 4 is the finely dotted zone of the front surface of the lamp housing 28 (gray-appearing zone), the mirror surface 36. At a center point in the short direction of the recess 34, a recess surface 38 is formed along a long direction of the recess 34. The recess surface 38 is a surface that includes an opening, wherein the width of the opening, given in a short direction, is large at the entrance side of the opening and narrows at the deep side of the opening, and wherein the recess surface 38 is formed by a curved surface that curves in a short direction. The width of the entrance of the opening of the recess surface 38, given in a short direction, and the depth of the opening are approximately constant along a long direction of the recess surface 38.The entire recess surface 38 is formed within a zone of the mirror surface 36, wherein the mirror surface 36 is continuously formed by the recess surface 38 and surfaces on opposite outer sides of the recess surface 38 in the short direction (auxiliary reflection surfaces 36b1 and 36b2, which are described below).

[0021] The light-guiding lens 30 has a flat, plate-like shape, with a front portion of the lens 30 being elongated and having a long direction and a short direction. The long direction is the light-guiding direction. The lens 30 curves along its long direction along the lamp housing 28 and is continuous from a surface oriented towards the front of the vehicle to the side of the vehicle when the mirror body 14 is in the operating position. No texture or similar feature is formed on any circumferential surface of the lens 30, and therefore the entire lens 30 is transparent.At a center point on the front surface of the light-guiding lens 30, defined in a short direction, a plurality of lens sections 40 are formed in a strip along the long direction of the light-guiding lens 30 such that a width, height, and grid spacing are defined that are constant over the substantially entire length of the light-guiding lens 30 in the long direction. The lens sections 40 curve along the long direction of the light-guiding lens 30 and are continuous from a surface oriented towards the front of the vehicle to a surface oriented towards the side of the vehicle when the mirror body 14 is in the operating position. Auxiliary lenses 42, 44 are located adjacent to each other in the light-guiding lens 30 at opposite or opposite ends.The lens sections 40 are formed on opposite sides, with the lens sections 40 arranged between them in the short direction. Step-like lens sections (reflection steps) 42a, 44a are formed in the respective front surfaces of the auxiliary lenses 42, 44 in the vicinity of the respective ends of the auxiliary lenses 42, 44 on the side furthest from the vehicle body. No lens sections extend beyond the reflection steps 42a, 44a in the auxiliary lenses 42, 44. An entire end surface of an end of the light-guiding lens 30 close to the vehicle body forms a light inlet 46 for light from the turn signal lamp. An end surface of the end of the light-guiding lens 30 on the side furthest from the vehicle body forms a light outlet 48 for light from the turn signal lamp.

[0022] A front form of the outer cover 24 is horizontally long and is formed in a substantially rectangular shape with a size substantially the same as that of the lamp housing 28. The outer cover 24 curves along the lamp housing 28 in a long direction and is continuous from a surface oriented towards the front of the vehicle to a surface oriented towards the side of the vehicle when the mirror body 14 is in the operating position. A projection 24a is formed along the long direction at a center point in the outer cover 24 given in a short direction. The projection 24a is located from the opening 26 ( Fig. 2) of the mirror housing 16 free to the outside.

[0023] Mounted on the circuit board 32 are three LEDs 33, which serve as light sources emitting the light of the turning lamp, a driver circuit (not shown) for the LEDs 33, and a socket-type connector (not shown) for connecting the driver circuit to an external wiring of the turning lamp 18. An opening (not shown) is formed in the lamp housing 28 at a position towards which an insertion terminal of the socket-type connector is oriented. A plug-type connector (which is provided with a waterproof rubber seal), attached to one end of the external wiring, is inserted into the insertion terminal of the socket-type connector from the opening, thus joining the two connectors.

[0024] A procedure for assembling the turning lamp 18 will now be described. First, the circuit board 32 is inserted into a part 34a of the recess 34 of the lamp housing 28 and thus positioned, with the part 34a being located in the curvature 28a. This insertion and positioning process is carried out by inserting and lowering opposite sides 32a, 32b of the circuit board 32 into respective slots (not shown), which are designed such that they extend in a depth direction in opposite wall surfaces 35, 37 in the recess 34a. Subsequently, the circuit board 32 is supported by both slots and is picked up and positioned upright within the recess 34a. At this point, the LEDs 33 are oriented in a direction corresponding to the extent of the recess 34a (light-guiding direction).Next, the light-guiding lens 30 is placed in the recess 34 of the lamp housing 28 and positioned there. The light-guiding lens 30 is then positioned and fixed at a predetermined position in the recess 34 by means of a claw or clamping engagement (not shown). Furthermore, a rear surface of an overhang (canopy) 30a, which is formed on an upper part of one end close to the body of the light-guiding lens 30, is aligned with an upper side 32c of the circuit board 32 (see figure 1). Fig. 5) brought into position, whereby the overhang 30a pushes the circuit board 32 downwards, thereby fixing the circuit board 32 within the recess 34a. As a result, the three LEDs, 33, 33, 33 are oriented to their respective positions in the light inlet 46 of the light guide lens 30, with the positions of the auxiliary lens 42, the lens section 40, and the auxiliary lens 44 corresponding correctly. Next, the outer cover 24 is placed onto the lamp housing 28. Subsequently, the entire circumferential edges of the lamp housing 28 and the outer cover 24 are brought into contact with each other. The entire perimeters of the contact surfaces are fused (welded) or joined together, thereby joining the entire circumferential edges of the lamp housing 28 and the outer cover 24, thus assembling the turning lamp 18 into a single unit and completing the assembly.

[0025] Fig. Figure 3 is a front view of the turning lamp 18, which is assembled into one piece as described above. Fig. 5 shows an end surface after a section at the in Fig. 3 positions marked by arrows AA, Fig. Figure 1 shows an end surface after a cut at the point where the cut is made. Fig. 3. Position indicated by arrows BB, and Fig. Figure 6 is an enlarged view of a part of the Fig. 3 lens sections labelled C 40. Note that Fig. 3 does not represent a position of the turning lamp 18 when mounted in the mirror body 14, but rather a reference position of the lamp 18 per se, in which the three LEDs 33 (in Fig. 3 (not shown) are arranged vertically and form a plate surface of the circuit board 32 in a direction perpendicular to the plane of the drawing. Fig. 3 are arranged. In this reference position, a surface of the overhang 30a at the end near the body of the vehicle of the light-guiding lens 30 is parallel to the drawing plane of Fig. 3. In contrast, shows Fig. 1. A position of the turning lamp 18 when the turning lamp 18 is mounted in the mirror body 14 and the mirror body 14 is in the operating position. The upward-downward direction in Fig. 1 is the vertical direction when the mirror body 14 is in the operating position, while the right-left direction is the horizontal direction when the mirror body 14 is in the operating position. In the position in the operating position according to Fig. 1 is the direction in which the three LEDs 33 (in Fig. (1 not shown) are arranged in a direction that, relative to the vertical direction when viewed horizontally from the front of the turning lamp 18 (front of the vehicle), is slightly inclined forward. In the same way as in Fig. Figure 1 shows a plate surface of a zone of a total zone in one extension direction of the light guide lens 30, i.e. the zone which is oriented towards the front of the vehicle, in a position which is slightly inclined forward relative to the vertical direction.

[0026] In lens sections 40 of Fig. 6 Each lens section 40a is formed by a prism lens formed by a recess surface having the shape of a four-sided pyramid (shape of an inverted pyramid) with a front surface of 3 mm 2exhibits. The lens sections 40 are formed by arranging the lens sections 40a in two rows, namely an upper and a lower row, in a knurled pattern continuously over substantially the entire length in the light-guiding direction of the light-guiding lens 30. An interior 50 ( Fig. 5) The turning lamp 18 is hermetically sealed to the outside, with the exception of the opening described above for the insertion of the plug-like connector, the opening being formed in the lamp housing 28. The light-guiding lens 30 and the circuit board 32 are received, fixed, and thus arranged in the interior 50. As in Fig. As shown in Figure 5, the three LEDs 33 are all oriented towards the light inlet 46 of the light-guiding lens 30 and emit the light of the cornering lamp simultaneously. The light of the cornering lamp emitted by the LEDs 33 enters the light inlet 46, is guided within the light-guiding lens 30, emitted at the light outlet 48, passes through a distal end surface 24b of the projection 24a of the outer cover 24, and is emitted towards the rear of the vehicle. The emitted light can be viewed from the rear of the vehicle. A portion of the light emitted by the central LED 33 below the three LEDs 33 strikes respective positions in the direction of extension of the lens sections 40, is reflected and refracted, and thereby diffuses while the light is guided within the light-guiding lens 30, and is emitted from these respective positions outside the light-guiding lens 30.The light can be viewed from the front and the side of the vehicle. Light emitted by the two LEDs 33 on opposite, upper and lower sides below the three LEDs 33 is generally guided through the respective auxiliary lenses 42, 44 and emitted at the light outlet 48 without significant attenuation during transmission. As a result, bright light from the turn signal lamp is emitted towards the rear of the vehicle.

[0027] The structure of the intersection surface is described below. Fig. The turning lamp 18 is described in Section 1. The turning lamp 18 is designed based on the assumption that it is viewed from a height horizontal to the front of the turning lamp 18 when the mirror body 14 is in the operating position. The position of the assumed viewing point is referred to below as the "reference viewing point position". The recess 34 of the lamp housing 28 includes a bottom surface 34b and opposite wall surfaces 34c, 34d. The mirror surface 36 extends continuously from the bottom surface 34b to the opposite wall surfaces 34c, 34d. Consequently, the mirror surface 36, formed by the reflective film 31, is located behind the total width of the light-guiding lens 30 in the upward-downward direction (short direction) when viewed from the reference viewing point position.In an upward-downward direction center of the ground surface 34b, the recess surface 38 is formed such that it is groove-shaped in a direction perpendicular to the plane of the drawing. Fig. 1 extends. No further recess surfaces are formed at positions in the base surface 34b that are located in the upward-downward direction (positions on the outer surfaces of the recess surface 38 given in the upward-downward direction) away from the light-guiding lens 30. In Fig. 1 The shape of the cut surface of the recess surface 38 is essentially the shape of a circular arc or essentially the shape of a parabolic curve. Surfaces 36b1, 36b2 on opposite, or opposite, upper and lower sides – across the recess surface 38 – of the mirror surface 36, which are formed in the base surface 34b, are arranged such that they extend along opposite, or opposite, outer sides of the lens sections 40 in the upward-downward direction when viewed from the reference viewpoint position, and form respective auxiliary reflection surfaces. Each of the auxiliary reflection surfaces 36b1, 36b2 is formed by a respective surface that is flat in the upward-downward direction.Among the auxiliary reflection surfaces, the one belonging to the upper side, 36b1, is arranged such that it is inclined upwards when viewed from the reference viewing point. Furthermore, the one belonging to the lower side, 36b2, is arranged such that it is inclined downwards when viewed from the reference viewing point. As a result, the two auxiliary reflection surfaces, 36b1 and 36b2, are arranged such that they are inclined outwards in an upward-downward direction relative to each other. The light-guiding lens 30 is attached to the lamp housing 28 via the previously described, but not shown, claw or clamp engagement and is supported therein in such a way that it is slightly spaced from the bottom surface 34b (in the floating state). As in . Fig. As shown in Figure 1, one zone of the light-guiding lens 30, namely the zone oriented towards the front of the vehicle, has essentially the shape of a parallelogram in vertical cross-section. Consequently, the plate surface of the light-guiding lens 30 is in a position that is slightly inclined forward relative to the vertical direction when viewed from the reference viewing point position, with each of an upper surface 30b and a lower surface 30c forming an essentially horizontal surface. Since the lens sections 40 are formed on the side of the light-guiding lens 30 facing the front surface, they are positioned at a distance forward from the mirror surface 36.Therefore, if the mirror surface 36 is flat in the upward-downward direction, a reflected image of the lens sections 40 can be seen across the mirror surface 36 at a distance equal to twice the space between the actual lens sections 40 and the mirror surface 36. Consequently, if the viewing point position from which the turn signal lamp 18 is viewed is moved upward-downward from the reference viewing point position, the actual lens sections 40 and their reflected image move relative to each other in the upward-downward direction by a distance equal to twice the distance of the upward-downward movement of the viewing point position.Even when the viewing position is moved only slightly in the up-down direction, the reflected image of the lens sections 40 moves significantly in the up-down direction relative to the actual lens sections 40, with the reflected image appearing as if it protrudes far from the actual lens sections 40 in the up-down direction. As a result, the original outline of the lens sections 40 appears as if it has been disrupted (for example, the actual lens section 40 and its reflected image appear as two separate lines).To avoid this adverse phenomenon, the recess surface 38 and the auxiliary reflection surfaces 36b1, 36b2 are formed in the mirror surface 36, and the auxiliary reflection surfaces 36b1, 36b2 are arranged adjacent to a tip and a base of the recess surface 38 such that they are inclined outwards in an upward-downward direction relative to each other. The recess surface 38 is formed at a position where, when viewed from the reference viewpoint position, the recess surface 38 overlaps the lens sections 40 behind the lens sections 40 along the lens sections 40.When viewed from the reference viewpoint position, the recess surface 38 is configured such that it has a width in the upward-downward direction, the width being greater than the width of the lens sections 40 in the upward-downward direction, the entire zone in the extension direction of the lens sections 40 being arranged within the width of the recess surface 38 in the upward-downward direction, and the upper and lower parts of the recess surface 38 appear as if they project slightly above and below the actual lens sections 40 and have widths that are substantially equal to each other. For example, if the design is chosen such that the width of the lens sections 40 in the upward-downward direction (width when viewed horizontally in . Fig. 1) is equal to 5 mm and the width of the recess surface in the upward-downward direction is 38 (width when viewed horizontally in Fig. 1) If the recessed surface 38 is 7 mm, then, when viewed from the reference viewpoint position, it appears as if it protrudes 1 mm above and below the actual lens sections 40. An image of the lens sections 40 is magnified in the upward-downward direction by the recessed surface 38, which forms a concave mirror. Now, when viewed from the reference viewpoint position, the reflected image of the lens section 40 appears as if it were held within the substantially entire width of the recessed surface 38 in the upward-downward direction, whereby the reflected image of the lens sections 40 is not visible in the auxiliary reflection surfaces 36b1, 36b2.As a result, when viewed from the reference viewpoint position, an image is visible on a surface of the actual lens sections 40 in which the actual lens sections 40 and the reflected image passing through them overlap. The upper and lower parts of the reflected image appear as if they protrude slightly above and below the actual lens sections 40 and have widths that are essentially equal to each other. The recess surface 38 is designed such that it has a width in the upward-downward direction, the width of which is greater than the width of the lens sections 40 in the upward-downward direction.When viewed from the reference viewing position, the width in the upward-downward direction of the actual lens sections 40 is kept within the width of the recess surface 38 in the upward-downward direction. Therefore, even if the auxiliary reflection surfaces 36b1, 36b2 are not inclined outwards relative to each other in the upward-downward direction (i.e., if the auxiliary reflection surfaces 36b1, 36b2 are in the same plane), the reflected image of the lens sections 40 is not visible in the auxiliary reflection surfaces 36b1, 36b2 when viewed from the reference viewing position. If the viewing position from which the turn signal lamp 18 is viewed is moved slightly upward-downward from the reference viewing position, the degree of protrusion of the recess surface 38 towards the upper or lower side of the actual lens sections 40 increases slightly with the movement.The state in which the reflected image of the lens sections 40 appears as if it were confined to the substantially entire width of the recess surface 38 in the upward-downward direction remains unchanged. Therefore, the reflected image of the lens sections 40 is not visible on the auxiliary reflection surfaces 36b1, 36b2. In particular, the auxiliary reflection surfaces 36b1, 36b2 are inclined outwards in the upward-downward direction relative to the horizontal direction, which is why the reflected image of the lens sections 40 does not appear on the auxiliary reflection surfaces 36b1, 36b2 unless the viewing point is noticeably moved upwards and downwards from the reference viewing point position.In this way, even if the vertical position from which the lens sections 40 are viewed changes from the reference viewpoint position, the state remains unchanged in which the image of the lens section 40 is held within the substantially entire width of the recess surface 38 in the upward-downward direction, with the image being reflected from the mirror surface 36. Therefore, the actual lens sections 40 and their reflected image move relative to each other in the upward-downward direction only by a distance that is substantially equal to the distance of the upward-downward movement of the viewpoint position, thus preventing a significant increase in the degree of protrusion of the reflected image of the lens sections 40 from the actual lens sections 40.As a result, the decorative function of the lens sections 40 is prevented from being impaired (for example, a sufficient distance is ensured between the upward-downward movement until the actual lens sections 40 and the reflected image thereof are separated by two lines), thus preventing any deterioration of the design due to the reflected image of the lens sections 40. This effect of preventing deterioration of the design can be achieved both when the turn signal lamp 18 is switched on and when the turn signal lamp 18 is switched off (when external light is present).Although the lens sections 40 curve along the curve in the direction of light transmission of the light-guiding lens 30 (curve along the shape of the outer circumferential surface of the mirror body 30), the reflected image of the lens sections 40 is held in the recess surface 38, thus preventing the curve shape of the actual lens sections 40 and the curve shape of the reflected image from appearing to be very different. This also prevents degradation of the design by the reflected image of the lens sections 40. Note that the alternating long and short dashed line H in . Fig. 1. A boundary is designated when the turning lamp 18 is viewed from a position above the boundary, where the lower end P1 of the auxiliary reflection surface 36b1 is obscured by the upper side of the mirror housing 16 of the turning lamp 18 and is therefore not visible. Similarly, the alternately long and short dashed line L designates a boundary when the turning lamp 18 is viewed from a position below the boundary, where the upper end P2 of the auxiliary reflection surface 36b2 is obscured by the lower side of the mirror housing 16 of the turning lamp 18 and is therefore not visible.If the inclination angles of the auxiliary reflection surfaces 36b1, 36b2 are chosen as angles that prevent the reflected image of the lens sections from appearing on the auxiliary reflection surfaces 36b1, 36b2 when a height position from which the turning lamp 18 is viewed changes within a range between the alternating long and short dashed lines L and H, then it can be prevented that the reflected image of the lens sections 40 appears on the auxiliary reflection surfaces 36b1, 36b2 when the turning lamp 18 is viewed from any height position.

[0028] The following describes the result of an investigation of the appearance of the actual lens sections 40 and a reflected image thereof using a real product of the aforementioned turning lamp 18 together with a comparative example. Fig. 7A, Fig. 7B and Fig. 7C are photos that each depict the appearance of the turning lamp 18, while Fig. 8A, Fig. 8B and Fig. The 8C photographs each depict the appearance of a turning lamp 18' according to a comparative example. The figures all show the appearance of the turning lamp 18 or 18' when the turning lamp 18 is switched off (when external light is present). For better visibility of the reflected image, the photographs were all taken with the outer cover 24 removed. The turning lamp 18' according to the comparative example in Fig. 8 is intended to confirm how the turning lamp 18 in Fig. 7 appears when no recessed surface 38 is provided in the mirror surface 36 of the turning lamp 18 and the auxiliary reflection surfaces 36b1, 36b2 are not inclined relative to each other in the upward-downward direction and are in one plane (that is, when an entire zone of the mirror surface 36 given in the upward-downward direction is in the same plane). For this purpose, a silver band is attached to an entire rear surface of the light-guiding lens 30 of the turning lamp 18', with a reflection surface of the silver band being used as the mirror surface 36'. Apart from this point, the turning lamp 18' is the same as the turning lamp 18 of Fig. 7.

[0029] First, the appearance of the lens sections 40 is determined according to the turning lamp 18. Fig. 7 described. Fig. Figure 7A shows the appearance of the turning lamp 18 (without the outer cover 24) when viewed from a substantially front reference viewpoint position, while Fig. Figure 7B shows an enlarged partial view of this. The reflected image is magnified in the upward-downward direction by the recess surface 38 and held within the entire width of the recess surface 38 in the upward-downward direction. As a result, as shown in Fig. As shown in Figure 7B, the reflected image of the lens sections 40 appears as if it protrudes slightly at the top and bottom sides of the actual lens sections 40. Fig. Figure 7C shows the appearance when viewed from this state with the viewing point moved slightly upwards. Since there is a gap between the lens sections 40 and the mirror surface 36, the upward movement of the viewing point slightly increases the degree of protrusion of the recess surface 38 on the upper side of the actual lens sections 40. The state in which the reflected image of the lens sections 40 appears as if it were held in the entire width of the recess surface 38 in the upward-downward direction remains unchanged. Therefore, the increase in the degree of protrusion of the reflected image of the lens sections 40 on the upper side of the actual lens sections 40 is essentially equal to the increase in the degree of protrusion of the recess surface 38 on the upper side of the actual lens sections 40 (that is, the degree of movement of the viewing point).

[0030] Next, the appearance of the lens sections 40 of the turning lamp 18' will be shown according to the comparative example of Fig. 8 described. Fig. Figure 8A shows the turning lamp 18' (without the outer cover 24) viewed from a substantially front reference viewpoint position (same position as in Fig. 7A), while Fig. 8B is an enlarged partial view of this. Since a plate surface of the light-guiding lens 30 when viewed from the reference viewpoint position (see Fig. 1) is inclined forwards, the reflective surface 36' formed by the silver band attached to the rear surface of the light-guiding lens 30 is also inclined forwards. Therefore, as shown in Fig. As shown in Figure 8B, the upper part of the reflected image of the lens sections 40 appears as if it were slightly projecting forward on the upper side of the actual lens sections 40 when viewed from the reference viewpoint position. Fig. Figure 8C shows the appearance when viewed from the same position as in Fig. 7C, where the viewing point is moved slightly upwards from this state. Since there is a gap between the lens sections 40 and the mirror surface 36', the upward movement of the viewing point increases the height of the projection of the reflected image of the lens sections 40, which appear as if they are projecting from the upper side of the actual lens sections 40. Now the distance between the actual lens sections 40 and the reflected image thereof is equal to twice the gap between the lens sections 40 and the mirror surface 36' (mirror surface 36 formed by the silver band), therefore the increase in the degree of projection of the reflected image of the lens section 40 at the upper side of the actual lens sections 40 is equal to twice the movement of the viewing point.

[0031] As by comparing Fig. 7C and Fig. As shown in Figure 8C, the turning lamp 18, according to the embodiment of the present invention, includes the recessed surface 38 in the mirror surface 36, so that the reflected image of the lens section 40 appears as if it were held within the entire width of the recessed surface 38 in the upward-downward direction. Therefore, if the vertical position from which the lens section 40 is viewed is changed, a strong upward-downward movement of the position of the reflected image of the lens section 40 relative to the actual lens sections 40 is counteracted. As a result, a significant increase in the degree of protrusion of the reflected image of the lens section 40 relative to the actual lens sections 40 is prevented.Therefore, the decorative function of the lens sections is prevented from being impaired, thus preventing any deterioration of the design due to the reflected image of the lens sections. Furthermore, since the auxiliary reflection surfaces 36b1, 36b2 are inclined outwards in the upward-downward direction relative to the horizontal direction, the reflected image of the lens sections 40 does not appear on the auxiliary reflection surfaces 36b1, 36b2 unless the viewing point is noticeably moved upwards or downwards from the reference viewing point position.

[0032] Although in the embodiment described above the shape of the cut end surface of the recess surface 38 is curved essentially in the form of a circular arc or essentially in the form of a parabola, with regard to the cut end surface of the recess surface according to the present invention one is not limited to this example. Fig. 9 and Fig. Figure 10 shows further examples of the cut surface of the recess according to the present invention. The structures in Fig. 9 and Fig. 10 are the same as the structure in Fig. 1 with the exception of the respective shapes of the recess surface. A cross-sectional surface of a recess surface 38' in Fig. 9 is trapezoidal in shape. The recess surface is 38". Fig. 10 is formed by two rows of curved surfaces 38a, 38b.

[0033] Although in the embodiment described above the LEDs 33, 33, 33 are arranged at a total of three positions, which are located in the light entrance 46 of the light-guiding lens 30, and which are oriented relative to the auxiliary lens 42, the lens section 40 and the auxiliary lens 44, the LEDs 33, 33 can also be arranged at a total of two positions of the light entrance 46 instead of this example. These positions are one between the auxiliary lens 42 and the lens sections 40 and one between the lens sections 40 and the auxiliary lenses 44. Additionally, the number of LEDs used can be chosen arbitrarily, for example, according to the required amount of light.

[0034] Although in the embodiment described above the mirror surface is formed on a surface of the lamp housing, the position of the mirror surface is not limited to this example. In other words, the mirror surface can, for example, be formed on a rear surface of the light-guiding lens. Fig. Figure 11 shows an embodiment of the present invention in which a mirror surface is formed on a rear surface of the light-guiding lens. Fig. 11 are for parts that correspond to the respective parts in Fig. 1 correspond, reference symbols used that are the same as in Fig. 1 are. The structure of the intersection surface is described below. Fig.11 described. The front shape of a light-guiding lens 30 is similar to that shown in the embodiment, wherein lens sections 40 are formed in a center of the light-guiding lens 30 in the upward-downward direction. A rear surface of the light-guiding lens 30 is pre-formed in a shape that allows the formation of a mirror surface, which includes a recess surface and auxiliary reflection surfaces. A reflective film 31 made of a metal such as aluminum or chromium is applied to the entire rear surface of the light-guiding lens 30, for example by vapor deposition or plating, so that the mirror surface 36 is designed such that it extends in a direction perpendicular to the plane of the drawing. The mirror surface 36 includes a recess surface 38 in the center in the upward-downward direction and includes auxiliary reflection surfaces 36b1, 36b2 on opposite sides.Opposite upper and lower sides across the recess surface 38. The recess surface 38 is formed by a surface that is curved essentially in the shape of a circular arc or essentially in the shape of a parabola in the upward-downward direction. Each of the auxiliary reflection surfaces 36b1, 36b2 is formed by a surface that is flat in the upward-downward direction. The auxiliary reflection surface 36b1 belonging to the upper side is arranged such that it is inclined upwards when viewed from a reference viewpoint position. Furthermore, the auxiliary reflection surface 36b2 belonging to the lower side is arranged such that it is inclined downwards when viewed from the reference viewpoint position. As a result, the two auxiliary reflection surfaces 36b1, 36b2 are inclined outwards relative to each other in the upward-downward direction.The recess surface 38 is formed at a position behind the lens sections 40, where, when viewed from the reference viewpoint position, the recess surface 38 overlaps the lens sections 40 along the lens sections 40.The recess surface 38 is configured to have a width in the upward-downward direction, the width being greater than the width of the lens sections 40 in the upward-downward direction when viewed from the reference viewpoint position. The width of the lens sections 40 in the upward-downward direction is maintained within the width of the recess surface 38 over an entire zone in the extension direction of the lens section 40. The upper and lower portions of the recess surface 38 appear to project slightly above and below the actual lens sections 40 and have widths of essentially the same. An image of the lens sections 40 is magnified in the upward-downward direction by the recess surface 38, which forms a concave mirror.At this point, when viewed from the reference viewpoint position, the reflected image of the lens sections 40 appears as if it were held within an upward-downward direction that substantially encompasses the entire width of the recess surface 38, with the reflected image of the lens sections 40 not being visible in the auxiliary reflection surfaces 36b1, 36b2. As a result, when viewed from the reference viewpoint position, an image is visible on one surface of the actual lens sections 40 in which the actual lens sections 40 and the reflected image passing through the lens sections 40 overlap. The upper and lower parts of the reflected image appear as if they project slightly above and below the actual lens sections 40 and have widths that are substantially equal.If the viewing point position from which the turn signal lamp 18 is viewed is moved slightly upwards and downwards from the reference viewing point position, the degree of protrusion of the recess surface 38 on the upper or lower side of the actual lens sections 40 increases slightly along with the movement. However, in the state where the reflected image of the lens sections 40 appears as if it were contained within the entire width of the recess surface 38 in the upwards and downwards direction, the state remains unchanged. Therefore, the reflected image of the lens sections 40 is not visible in the auxiliary reflection surfaces 36b1, 36b2.

[0035] Although the embodiment described above has been described using the example of a turning lamp intended to be installed in an exterior mirror, the invention can be used for all turning lamps for vehicles - even beyond installation in an exterior mirror. Reference symbol list 10 door mirrors for the right side of a vehicle 14 mirror bodies 18 Turning lamp 24 outer cover 28 lamp housings 30 Light-guiding lens 33 LEDs (light source) 34 Exclusion 36 Mirror surface 36b1, 36b2 Auxiliary reflection surface 40 lens section 38 Recess surface 42, 44 auxiliary lens 46 Light entry 48 Light output

Claims

[1] Turning lamp (18) for a vehicle, wherein the turning lamp (18) comprises: a light-guiding lens (30), a mirror surface (36) arranged behind the light-guiding lens (30) when viewed from a viewpoint side from which the turning lamp (18) is viewed, and a light source (33) which causes light to enter the light-guiding lens (30), wherein: the turning lamp (18) further has a recess (34) which, when viewed from the viewing point side, is formed behind the light-guiding lens (30) in such a way that it extends in a direction of extension of the light-guiding lens (30); the light-guiding lens (30) is arranged in the recess (34); the recess (34) has the mirror surface (36); the light-guiding lens (30) includes a lens section (40) which is designed on a front surface of the light-guiding lens (30) when viewed from the viewpoint side such that it extends in a light-guiding direction of the light-guiding lens (30); the mirror surface (36) includes a recessed surface (38) which is formed behind the lens section (40) when viewed from the viewpoint side along the lens section (40); the recess surface (38) is formed in a central area in a short direction of the recess (34); and the recess surface (38) is designed such that it has a width in a short direction thereof, wherein the width is greater than a width in a short direction of the lens section (40) when viewed from the viewpoint side. [2] Turning lamp (18) according to claim 1, wherein: the light-guiding lens (30) includes an auxiliary lens (42, 44) at each of the outer positions on opposite sides in the short direction of the lens section (40) when viewed from the viewpoint side along the lens section (40); and the auxiliary lens (42, 44) is not provided with any lens section (40) or is provided with a lens section (40) that causes less attenuation in the direction of light transmission compared to the lens section (40). [3] Turning lamp (18) according to claim 2, wherein the auxiliary lens (42, 44) comprises: a light inlet where the light from the light source (33) enters, and a light outlet where the light which entered at the light inlet and passed through the auxiliary lens (42, 44) is emitted. [4] Turning lamp (18) according to one of claims 1 to 3, wherein: the mirror surface (36) includes an auxiliary reflection surface (36b1, 36b2), which is arranged such that it extends from each of the positions on opposite or opposite outer sides in the short direction of the lens section (40) when viewed from the viewpoint side; at least a part of the lens section (40) is arranged on a front side relative to the auxiliary reflection surfaces (36b1, 36b2) when viewed from the viewpoint side; and the auxiliary reflection surfaces (36b1, 36b2) each include surfaces which are inclined outwards relative to each other in the short direction of the lens section (40). [5] Turning lamp (18) according to one of claims 1 to 4, wherein the recess surface (38) is a curved surface.