JP2019212366A - Vehicular light fitting - Google Patents

Abstract

To allow for effective use of a light source luminous flux in a vehicular light fitting with a light guide, even if the vehicular light fitting adopts a configuration having a light source unit.SOLUTION: The vehicular light fitting has constitution in which condenser lens 40 is arranged between a light source unit 20 and a light guide 30, for condensing emitted light from five light emitting elements 22 and making the condensed light incident on the light guide 30. The condenser lens 40 is comprised of a pair of front and rear convex lenses 40A and 40B arranged in directions opposite to each other. In addition, most of the light emitted from the five light emitting elements 22 is made incident on the convex lens 40A at the light source side and is made approximately parallel light, and then this approximately parallel light is condensed by the convex lens 40B at the light guide side and is made incident on a first end surface 30a of a light guide 30. Thereby, reduction in the efficiency of incidence of the emitted light from the five light emitting elements 22 on the light guide 30 is prevented despite configuration in which the lens surface 40Ab of the convex lens 40A is spaced away from the five light emitting elements 22 at an interval of a predetermined length or more.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a vehicular lamp provided with a light guide.

  2. Description of the Related Art Conventionally, as a configuration of a vehicular lamp such as a tail lamp or a clearance lamp, one having a light guide that makes light emitted from a light source incident and guides the light in a required direction is known.

  “Patent Document 1” describes a configuration of such a vehicular lamp including a light source unit in which a light source is supported by a socket.

  In this vehicular lamp, the light source unit is detachably supported by the lamp body at the socket.

JP 2017-84692 A

  In a vehicular lamp provided with a light source unit, when the light source unit is mounted on a lamp body, the light source is prevented from interfering with other lamp component members. It is necessary to secure a predetermined space between the two. That is, in the vehicular lamp provided with the light guide, it is necessary to dispose the incident surface of the light guide at an interval of a predetermined value or more with respect to the light source of the light source unit.

  However, if the incident surface of the light guide is arranged at a position far away from the light source, the incident efficiency of the light emitted from the light source to the light guide decreases, and the light source luminous flux cannot be used effectively. End up.

  It is an object of the present invention to provide a vehicular lamp that can effectively use a light source luminous flux even when a configuration including a light source unit is employed in a vehicular lamp that includes a light guide. Is.

  The present invention is intended to achieve the above object by adopting a configuration including a predetermined condenser lens.

That is, the vehicular lamp according to the present invention is
In a vehicle lamp comprising: a light source unit in which a light source is supported by a socket; and a light guide that guides emitted light from the light source to a required direction.
The light source unit is detachably supported on the lamp body in the socket,
A condensing lens is disposed between the light source unit and the light guide to collect the light emitted from the light source and enter the light guide.
The condensing lens is composed of a pair of convex lenses arranged in opposite directions.

  The “light source unit” is configured to be detachably supported by the lamp body in the socket, but the specific configuration for this is not particularly limited.

  The type of the “light source” is not particularly limited, and for example, a light emitting diode or a light source bulb can be employed.

  As long as the “light guide” is configured so that the light emitted from the light source is incident and guided in the required direction, the specific shape, the specific mode of light emission from the light guide, and the like Is not particularly limited.

  The specific direction of the “required direction” is not particularly limited.

  As long as the “condensing lens” is composed of a pair of convex lenses arranged in opposite directions, the specific configuration of each lens is not particularly limited.

  The vehicular lamp according to the present invention is configured so that light emitted from a light source of a light source unit is incident on a light guide and guided in a required direction, and the light source unit can be attached to and detached from the lamp body at its socket. Although it is supported, a condensing lens is disposed between the light source unit and the light guide to collect the light emitted from the light source and make it incident on the light guide. Since the optical lens is composed of a pair of convex lenses arranged in opposite directions, the following effects can be obtained.

  In other words, a condensing lens is arranged between the light source unit and the light guide, and the condensing lens is composed of a pair of convex lenses arranged in opposite directions, thereby preventing the light from the light source. Most of the emitted light is incident on a convex lens located on the light source side to make it substantially parallel light, and then the substantially parallel light is condensed by a convex lens located on the light guide side to be incident on the incident surface of the light guide. be able to.

  Therefore, even when the incident surface of the convex lens located on the light source side is arranged at a predetermined distance or more with respect to the light source of the light source unit, the incident efficiency of the light emitted from the light source to the light guide is reduced. Therefore, the light source luminous flux can be used effectively.

  As described above, according to the present invention, the light source luminous flux can be effectively used even in the case where the configuration including the light source unit is adopted in the vehicular lamp including the light guide.

  In the above configuration, if each of the pair of convex lenses is constituted by a biconvex lens in which the curvature of the lens surfaces facing each other is larger than the curvature of the lens surface on the opposite side, even if the diameter of each convex lens is increased, It becomes possible to suppress lens aberration small, and this can improve the condensing property to the entrance surface of a light guide.

  In the above configuration, if the pair of convex lenses constituting the condenser lens are configured by a single member, the positional relationship between the convex lenses can be made constant, and the support structure is simplified. can do.

  As a specific configuration for realizing this, if a pair of convex lenses are integrated by a connecting beam formed so as to connect the peripheral portions thereof, the optical performance of each convex lens is affected. Both of them can be constituted by a single member. In this case, the “connection beam” may be single or plural.

  Instead of (or in addition to) such a configuration, a pair of convex lenses may be integrated by connecting their central portions.

  When such a configuration is employed, both can be configured with a single member with a compact configuration. At this time, the lens function is lost at the center of each convex lens. At this center, the light incident on the convex lens located on the light source side is directly emitted from the convex lens located on the light guide side and guided. The light can be incident on the incident surface of the light body, whereby the light source light beam can be used effectively.

  In the above configuration, if the condensing lens is integrally formed with a bracket for fixing the condensing lens to the lamp body, the condensing lens can be supported without using a dedicated member such as a lens barrel. It can be carried out.

  At that time, when the pair of convex lenses constituting the condenser lens is constituted by different members, it is necessary to adopt a configuration in which a bracket is formed for each convex lens. In the case of a single member, the bracket may be formed in at least one place. In the latter case, the connecting beam can be used as a bracket.

Plan sectional drawing which shows the vehicle lamp which concerns on one Embodiment of this invention II direction view of FIG. Detailed view of part III in Fig. 1 The same figure as FIG. 3 which shows the 1st modification of the said embodiment. The same figure as FIG. 3 which shows the 2nd modification of the said embodiment. The same figure as FIG. 3 which shows the 3rd modification of the said embodiment. The same figure as FIG. 3 which shows the 4th modification of the said embodiment. The same figure as FIG. 3 which shows the 5th modification of the said embodiment. The same figure as FIG. 3 which shows the 6th modification of the said embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a plan sectional view showing a vehicular lamp 10 according to an embodiment of the present invention, and FIG. 2 is a view in the direction of the arrow II in FIG.

  In these figures, the direction indicated by X is “front” as a lamp (“rear” for vehicles), and the direction indicated by Y is “right” (“right direction” for vehicles) orthogonal to “front”. ), And the direction indicated by Z is “upward”. The same applies to other figures.

  As shown in these drawings, the vehicular lamp 10 according to the present embodiment is a tail lamp provided at the right rear end of the vehicle, and is a transparent light-transmitting light attached to the lamp body 12 and its front end opening. A part of the light source unit 20, the light guide 30, the condenser lens 40, and the extension panel 16 are incorporated in a lamp chamber formed by the cover 14.

  The lamp body 12 includes a body main body 12A having an open upper end portion and a cover member 12B attached to the upper end portion of the body main body 12A.

  The translucent cover 14 is formed so as to go around the lamp rear side from the vehicle width direction inner side (that is, the left side) toward the vehicle width direction outer side.

  The light source unit 20 includes five light emitting elements 22 as light sources, and is detachably attached to the rear wall portion 12Aa of the body main body 12A. A specific configuration of the light source unit 20 will be described later.

  The light guide 30 is a rod-shaped light guide made of transparent resin (for example, acrylic resin), and has a convex curve so as to wrap around the lamp from the vehicle width direction inner side to the vehicle width direction outer side along the horizontal plane. The curvature is gradually increased toward the outside in the vehicle width direction.

  The light guide 30 includes a vertical surface whose first end surface 30a on the outer side in the vehicle width direction extends in the vehicle width direction, and a second end surface 30b on the inner side in the vehicle width direction includes a vertical surface that extends in the lamp front-rear direction. ing. And this light guide 30 makes the emitted light from five light emitting elements 22 enter into the rod-shaped light guide 30 toward the 2nd end surface 30b, after making it enter from the 1st end surface 30a. It has become.

  The peripheral surface portion 30c of the light guide 30 has a circular cross-sectional shape with a diameter of about 4 to 8 mm (for example, about 5 mm), and a plurality of reflective elements 30s are formed on the rear surface thereof. Each reflective element 30 s is formed so as to protrude in a wedge shape toward the rear side of the lamp in a plan view in a state where the reflective elements 30 s are arranged so as to be arranged at substantially equal intervals in the longitudinal direction in a region excluding both ends of the light guide 30. Has been.

  In the light guide 30, the light from the five first light sources 22 incident from the first end face 30 a is internally reflected by total reflection in each reflecting element 30 s while guiding the light toward the second end face 30 b. Thus, the light is emitted from the front surface of the peripheral surface portion 30c to the front of the lamp.

  The light guide 30 is fixed to the lamp body 12 at both ends in the longitudinal direction.

  That is, a metal fitting 32 that supports the light guide 30 is attached to the end of the light guide 30 on the first end face 30a side. The metal fitting 32 is fastened and fixed to the upper surface of a shelf-like light guide support portion 12Ab formed on the body main body 12A by screws 34 at two places on the left and right.

  On the other hand, a tab portion 30 d extending toward the rear of the lamp is formed at the end portion of the light guide 30 on the second end surface 30 b side. The light guide 30 is fastened and fixed to the upper surface of the shelf-like light guide support part 12Ac formed on the body main body 12A by screws 34 at two positions before and after the tab part 30d.

  The condensing lens 40 is disposed between the light source unit 20 and the light guide 30, and condenses the light emitted from the five light emitting elements 22 and enters the light guide 30. A specific configuration of the condenser lens 40 will be described later.

  The extension panel 16 is fixed to the lamp body 12 in a state in which the extension panel 16 is arranged on the front side of the lamp of the light guide 30.

  The extension panel 16 has a horizontally long rectangular opening 16a. The extension panel 16 exposes the main portion of the light guide 30 (that is, the portion where the plurality of reflective elements 30s are formed) to the inner peripheral space of the opening 16a in the front view of the lamp. It is comprised so that a part may be shielded.

  Next, specific configurations of the light source unit 20 and the condenser lens 40 will be described.

  FIG. 3 is a detailed view of part III in FIG.

  As shown in the figure, each of the five light emitting elements 22 of the light source unit 20 is a red light emitting diode having a square light emitting surface of the same size, and is arranged in a vertical and horizontal cross shape when viewed from the front of the lamp. It is mounted on a common substrate 24. The substrate 24 is supported by the socket 26 while being positioned on the front end surface of the socket 26.

  The light source unit 20 is supported by the light source support hole 12Aa1 formed in the rear wall portion 12Aa of the body main body 12A in the socket 26 thereof. This support is performed by rotating the socket 26 by a predetermined amount and fitting it with the rear wall 12Aa with the front end of the socket 26 inserted into the light source support hole 12Aa1 from the rear side of the lamp. In order to ensure this fitting, an elastic seal member 28 such as an O-ring is attached to the socket 26. The socket 26 is made of metal (for example, made of aluminum die casting), and a plurality of heat radiating fins 26a are formed in the rear portion thereof, thereby fulfilling a function as a heat sink.

  Next, a specific configuration of the condenser lens 40 will be described.

  As shown in FIG. 3, the condensing lens 40 is composed of a pair of front and rear convex lenses 40A and 40B arranged in opposite directions, and has an optical axis Ax extending in the front-rear direction of the lamp. The effective diameter of the condenser lens 40 is set to a value of about φ10 to 20 mm (for example, φ15 mm).

  Each of the pair of front and rear convex lenses 40A and 40B is a lens made of transparent resin (for example, made of acrylic resin), and the curvatures of the lens surfaces 40Aa and 40Ba facing each other are larger than the curvatures of the opposite lens surfaces 40Ab and 40Bb. Consists of a convex lens.

  The light source unit 20 is arranged so that the light emission center of the light emitting element 22 located in the center among the five light emitting elements 22 is located on the optical axis Ax. The light guide 30 is arranged such that the center of the first end face 30a is located on the optical axis Ax. The condensing lens 40 is positioned at the light emission center of the light emitting element 22 with the focal point on the rear side of the lamp located in the center, and the focal point on the front side of the lamp is positioned at the center of the first end face 30a of the light guide 30. Are arranged to be.

  Thereby, the condensing lens 40 is made to condense the emitted light from the light emission center of the light emitting element 22 located in the center to the center position of the 1st end surface 30a of the light guide 30. FIG. At this time, a gap (specifically 3 or more) is set between the lens surface 40Ab on the light source side of the convex lens 40A located on the light source side (that is, on the rear side of the lamp) and the five light emitting elements 22 of the light source unit 20. An interval of ˜4 mm or more (for example, an interval of about 5 mm) is secured.

  Each convex lens 40A, 40B has outer peripheral flange portions 40Ac, 40Bc.

  The convex lenses 40A and 40B are fixed to the body main body 12A at the distal end portions of the bracket portions 40Ad and 40Bd extending in a flat plate shape from the upper end portions of the outer peripheral flange portions 40Ac and 40Bc toward the outer side in the vehicle width direction.

  Specifically, each bracket part 40Ad, 40Bd has a larger front-rear width than each outer peripheral flange part 40Ac, 40Bc, and its front end part bends in an L shape in a direction approaching each other in the lamp front-rear direction. Is formed. The convex lenses 40A and 40B are fastened and fixed to the upper surface of the shelf-like lens support portion 12Ad formed on the body main body 12A by screws 34 at two positions before and after the front ends of the bracket portions 40Ad and 40Bd.

  As shown in FIG. 2, as the bracket portions 40Ad and 40Bd extend in the horizontal direction from the upper end portions of the outer peripheral flange portions 40Ac and 40Bc, the upper surface of the lens support portion 12Ad of the body main body 12A has a top surface. It is located above the upper surface of the light guide support part 12Ab.

  As shown in FIG. 3, in the vehicular lamp 10 according to this embodiment, the five light emitting elements 22 of the light source unit 20 and the lens surface 40Ab of the convex lens 40A located on the rear side of the lamp are spaced apart by a predetermined value or more. However, since the lens surface 40Ab of the convex lens 40A has a considerably large diameter, most of the emitted light from the five light emitting elements 22 enters the convex lens 40A. The light incident on the convex lens 40A exits from the convex lens 40A as substantially parallel light, then enters the convex lens 40B, exits from the convex lens 40B, and enters the first end face 30a of the light guide 30. Become.

  On the other hand, as shown by a two-dot chain line in FIG. 3, the light guide 30 is temporarily arranged so that the position of the first end surface 30a is the same as the lens surface 40Ab of the convex lens 40A. In this case, the ratio of the light incident on the first end face 30a of the light guide 30 out of the light emitted from the five light emitting elements 22 is the ratio of the convex lens 40A. This is considerably less than the proportion of light incident on the lens surface 40Ab.

  That is, by using the configuration in which the condensing lens 40 is disposed between the five light emitting elements 22 and the light guide 30 as in the present embodiment, the utilization efficiency of the light source luminous flux is greatly improved.

  Next, the effect of this embodiment is demonstrated.

  The vehicular lamp 10 according to the present embodiment is configured such that light emitted from five light emitting elements 22 constituting the light source of the light source unit 20 is incident on the light guide 30 and guided in the vehicle width direction (required direction). In addition, the light source unit 20 is configured to be detachably supported by the lamp body 12 in the socket 26, but between the light source unit 20 and the light guide 30, five light emitting elements 22 are provided. A condensing lens 40 for condensing the emitted light and making it incident on the light guide 30 is disposed. The condensing lens 40 is composed of a pair of front and rear convex lenses 40A and 40B disposed in opposite directions. Therefore, the following effects can be obtained.

  That is, after the condensing lens 40 is disposed between the light source unit 20 and the light guide 30, the condensing lens 40 is composed of a pair of front and rear convex lenses 40A and 40B disposed in opposite directions. By configuring, after most of the light emitted from the five light emitting elements 22 is incident on the convex lens 40A located on the light source side to make it substantially parallel light, this substantially parallel light is made convex lens 40B located on the light guide side. It is possible to collect the light and make it incident on the first end face 30 a of the light guide 30.

  Accordingly, although the lens surface 40Ab on the light source side of the convex lens 40A located on the light source side is arranged at intervals of a predetermined value or more with respect to the five light emitting elements 22 of the light source unit 20, five light emission The incident efficiency of the light emitted from the element 22 to the light guide 30 can be prevented from decreasing, and the light source luminous flux can be used effectively.

  As described above, according to the present embodiment, the vehicular lamp 10 including the light guide 30 can effectively use the light source luminous flux even though the light source unit 20 is provided.

  In addition, in the present embodiment, each of the pair of front and rear convex lenses 40A and 40B is composed of a biconvex lens in which the curvature of the lens surfaces 40Aa and 40Ba facing each other is larger than the curvature of the opposite lens surfaces 40Ab and 40Bb. Even if the diameters of the convex lenses 40A and 40B are increased, the lens aberration as the condensing lens 40 can be suppressed to be small, and thereby the light condensing property to the first end face 30a of the light guide 30 can be enhanced. .

  Further, in the condensing lens 40 of this embodiment, brackets 40Ad and 40Bd for fixing the convex lenses 40A and 40B to the lamp body 12 are integrally formed on the convex lenses 40A and 40B. The condensing lens 40 can be supported without using a dedicated member.

  In the above-described embodiment, the configuration of the condensing lens 40 has been described as having the optical axis Ax extending in the lamp front-rear direction, but the optical axis Ax extends in a direction other than the lamp front-rear direction. It is also possible to adopt a configuration arranged in (1).

  In the above-described embodiment, the light source unit 20 has been described as having five light emitting elements 22 arranged in a vertical and horizontal cross shape. However, other arrangements and configurations having other numbers of light emitting elements 22 are provided. It is also possible.

  In the above-described embodiment, each of the pair of front and rear convex lenses 40A and 40B has been described as being constituted by a biconvex lens. However, these can also be constituted by a plano-convex lens, a convex meniscus lens, or the like.

  In the above embodiment, the case where the vehicular lamp 10 is a tail lamp has been described, but other vehicular lamps (for example, a stop lamp, a clearance lamp, a daytime running lamp, a turn signal lamp, a room lamp, etc.) are used. Even in this case, by adopting the same configuration as that of the above embodiment, the same effect as that of the above embodiment can be obtained.

  Next, a modification of the above embodiment will be described.

  First, a first modification of the above embodiment will be described.

  FIG. 4 is a view similar to FIG. 3 showing a main part of the vehicular lamp 110 according to this modification.

  As shown in the figure, the basic configuration of the vehicular lamp 110 according to this modification is the same as that of the above embodiment, but the configuration of the condenser lens 140 is partially different from that of the above embodiment. ing.

  That is, the condensing lens 140 of this modification is also configured by a pair of front and rear convex lenses 140A and 140B arranged in opposite directions, but the pair of front and rear convex lenses 140A and 140B are configured by a single member. This is different from the above embodiment.

  Specifically, the pair of front and rear convex lenses 140A and 140B are integrated by a connecting beam 140C formed so as to connect the outer peripheral flange portions 140Ac and 140Bc on a horizontal plane including the optical axis Ax on the inner side in the vehicle width direction. It has become.

  Also in this modification, the shape of the lens surface of each convex lens 140A, 140B is the same as in the above embodiment.

  The convex lenses 140A and 140B of the present modification also include bracket portions 140Ad and 140Bd that extend in a flat plate shape from the upper end portions of the outer peripheral flange portions 140Ac and 140Bc toward the outer side in the vehicle width direction, but the convex lenses 140A and 140B are provided. Are fastened and fixed to the upper surface of the lens support portion 12Ad of the body main body 12A by a screw 34 at one position of the tip portions of the bracket portions 140Ad and 140Bd.

  In the vehicular lamp 110 according to the present modification, the pair of front and rear convex lenses 140A and 140B constituting the condenser lens 140 are formed of a single member, so that the positional relationship between the convex lenses 140A and 140B is constant. In addition, the support structure can be simplified by halving the tightening portion of the screw 34 when the condenser lens 140 is fixed to the body main body 12A.

  Further, the condensing lens 140 of this modification is integrated by a connecting beam 140C formed by connecting a pair of front and rear convex lenses 140A, 140B to the outer peripheral flange portions 140Ac, 140Bc, which are peripheral portions thereof. Therefore, both can be comprised with a single member, without affecting the optical performance of each convex lens 140A, 140B.

  Next, a second modification of the above embodiment will be described.

  FIG. 5 is a view similar to FIG. 3, showing a main part of the vehicular lamp 210 according to this modification.

  As shown in the figure, the basic configuration of the vehicular lamp 210 according to this modification is the same as that of the above embodiment, but the configuration of the condenser lens 240 is partially different from that of the above embodiment. ing.

  That is, the condensing lens 240 of this modification is also configured by a pair of front and rear convex lenses 240A and 240B arranged in opposite directions, but the pair of front and rear convex lenses 240A and 240B are configured by a single member. This is different from the above embodiment.

  Specifically, the pair of front and rear convex lenses 240A and 240B are integrated by connecting their central parts via a columnar part 240D extending in the front-rear direction of the lamp.

  At this time, the columnar portion 240D is formed with a diameter slightly smaller than ½ of the diameter of the first end face 30a of the light guide 30, and thus enters the convex lens 240A and passes through the columnar portion 240D as it is. Thus, substantially the entire amount of the light emitted from the convex lens 240B is made incident on the first end face 30a of the light guide 30.

  Also in this modification, the shape of the lens surface of each convex lens 240A, 240B is the same as in the above embodiment.

  Similarly to the case of the first modification, the convex lenses 240A and 240B of the present modification also include bracket portions 240Ad and 240Bd that extend in a flat plate shape from the upper ends of the outer peripheral flange portions 240Ac and 240Bc outward in the vehicle width direction. The screw is fixed to the upper surface of the lens support portion 12Ad of the body main body 12A by a screw 34 at one point of the tip portion.

  In the vehicular lamp 210 according to this modification, since the pair of front and rear convex lenses 240A and 240B constituting the condenser lens 240 are formed of a single member, the positional relationship between the convex lenses 240A and 240B is constant. The support structure can be simplified by halving the tightening location of the screw 34 when fixing the condenser lens 240 to the body main body 12A.

  In addition, since the condensing lens 240 has a configuration in which the center portions of the pair of front and rear convex lenses 240A and 240B are connected to each other, both can be configured with a single member in a compact configuration.

  When the condensing lens 240 of this modification is adopted, the lens function is lost at the central portion of each convex lens 240A, 240B, but light incident on the convex lens 240A is emitted from the convex lens 240B as it is at this central portion. And since almost the whole quantity enters into the 1st end surface 30a of the light guide 30, the light source light beam can be used effectively.

  In the second modified example, the center portions of the pair of front and rear convex lenses 240A and 240B are described as being connected via the columnar portion 240D, but the center portions of the pair of front and rear convex lenses 240A and 240B are connected to each other. It is also possible to have a configuration in which they are directly connected.

  Next, a third modification of the above embodiment will be described.

  FIG. 6 is a view similar to FIG. 3 and showing a main part of the vehicular lamp 310 according to the present modification.

  As shown in the figure, the basic configuration of the vehicular lamp 310 according to this modification is the same as that of the above embodiment, but the configuration of the condenser lens 340 is partially different from that of the above embodiment. ing.

  That is, the condensing lens 340 of this modification is also configured by a pair of front and rear convex lenses 340A and 340B arranged in opposite directions, but the front and rear pair of convex lenses 340A and 340B are configured by a single member. This is different from the above embodiment.

  Specifically, the pair of front and rear convex lenses 340A and 340B connect the front end portions of the bracket portions 340Ad and 340Bd extending in a flat plate shape from the upper end portions of the outer peripheral flange portions 340Ac and 340Bc outward in the vehicle width direction. It is integrated by the plate-like connecting portion 340E formed as described above.

  And the condensing lens 340 of this modification is fastened and fixed to the upper surface of the lens support portion 12Ad of the body main body 12A by screws 34 at two places before and after the plate-like connecting portion 340E.

  Also in this modification, the shape of the lens surface of each convex lens 340A, 340B is the same as in the above embodiment.

  In the vehicular lamp 310 according to this modification, the pair of front and rear convex lenses 340A and 340B constituting the condensing lens 340 are formed of a single member, so that the positional relationship between the convex lenses 340A and 340B is constant. In addition, the support structure can be simplified by halving the tightening portion of the screw 34 when the condenser lens 340 is fixed to the body main body 12A.

  Further, the condensing lens 340 of this modification is integrated by a plate-like connecting portion 340E formed so that a pair of front and rear convex lenses 340A and 340B connect the tip ends of the bracket portions 340Ad and 340Bd. Therefore, both can be comprised with a single member, without affecting the optical performance of each convex lens 240A, 240B.

  Next, the 4th modification of the said embodiment is demonstrated.

  FIG. 7 is a view similar to FIG. 3 showing the main part of the vehicular lamp 410 according to this modification.

  As shown in the figure, the basic configuration of the vehicular lamp 410 according to this modification is the same as that of the above embodiment, but the configuration of the condenser lens 440 is partially different from that of the above embodiment. ing.

  That is, the condensing lens 440 of this modification is also configured by a pair of front and rear convex lenses 440A and 440B arranged in opposite directions, but the front and rear pair of convex lenses 440A and 440B are configured by a single member. This is different from the above embodiment.

  Specifically, the pair of front and rear convex lenses 440A and 440B includes a connecting beam 440C formed so as to connect the outer peripheral flange portions 440Ac and 440Bc to each other on a horizontal plane including the optical axis Ax on the inner side in the vehicle width direction. The outer peripheral flange portions 440Ac and 440Bc are integrated by a plate-like connecting portion 440E formed so as to connect the tip ends of the bracket portions 440Ad and 440Bd extending in a flat plate shape from the upper end portion to the vehicle width direction outer side. Yes.

  And the condensing lens 440 of this modification is fastened and fixed to the upper surface of the lens support portion 12Ad of the body main body 12A by screws 34 at two places before and after the plate-like connecting portion 440E.

  Also in this modification, the shape of the lens surface of each convex lens 440A, 440B is the same as in the above embodiment.

  In the vehicular lamp 410 according to this modification, the pair of front and rear convex lenses 440A and 440B constituting the condensing lens 440 are formed of a single member, so that the positional relationship between the convex lenses 440A and 440B is constant. In addition, the support structure can be simplified by halving the tightening portion of the screw 34 when the condenser lens 440 is fixed to the body main body 12A.

  Further, in the condensing lens 440 of this modification, a pair of front and rear convex lenses 440A and 440B are integrated by connecting beams 440C and plate-like connecting portions 440E arranged on the left and right sides thereof, so that each convex lens 440A. Both can be constituted by a single member without affecting the optical performance of 440B.

  In addition, in this condensing lens 440, a pair of convex lenses 440A and 440B, a connecting beam 440C, and a plate-like connecting portion 440E form a frame structure having a closed cross section. Accordingly, the positional relationship accuracy between the pair of front and rear convex lenses 440A and 440B can be improved.

  Next, a fifth modification of the above embodiment will be described.

  FIG. 8 is a view similar to FIG. 3, illustrating a main part of the vehicular lamp 510 according to the present modification.

  As shown in the figure, the basic configuration of the vehicular lamp 510 according to this modification is the same as that of the fourth modification, but the configuration of the condenser lens 540 is the same as that of the fourth modification. And partly different.

  That is, the condensing lens 540 of this modified example is also connected to a pair of front and rear convex lenses 540A and 540B arranged in opposite directions, like the condensing lens 440 of the fourth modified example. The beam 540C and the plate-like connecting portion 540E are integrated.

  However, in the condensing lens 540 of this modification, bracket portions 540Ad and 540Bd extending in a flat plate shape from the outer peripheral flange portions 540Ac and 540Bc of the convex lenses 540A and 540B to the outer side in the vehicle width direction are the outer peripheral flange portions 540Ac. It is configured to be formed at the position of the horizontal plane including the optical axis Ax, not at the position of the upper end portion of 540Bc. Accordingly, the plate-like connecting portion 540E is also formed to extend along a horizontal plane including the optical axis Ax, similarly to the connecting beam 540C.

  The condensing lens 540 of the present modification is also fastened and fixed to the body main body 512A of the lamp body 512 by screws 34 at two places before and after the plate-like connecting portion 540E. The lens support portion 512Ad has an upper surface. Is located below the upper surface of the lens support portion 12Ad of the fourth modified example, and is formed flush with the upper surface of the light guide support portion 512Ab.

  Also in this modification, the shape of the lens surface of each convex lens 540A, 540B is the same as in the above embodiment.

  In the vehicular lamp 510 according to this modification, the pair of front and rear convex lenses 540A and 540B constituting the condenser lens 540 are formed of a single member, so that the positional relationship between the convex lenses 540A and 540B is constant. The support structure can be simplified by halving the tightening portion of the screw 34 when the condenser lens 540 is fixed to the body main body 512A.

  Further, in the condensing lens 540 of this modification, a pair of front and rear convex lenses 540A and 540B are integrated by connecting beams 540C and plate-like connecting portions 540E arranged on the left and right sides thereof, so that each convex lens 540A. Both can be constituted by a single member without affecting the optical performance of 540B.

  In addition, in this condensing lens 540, a frame structure having a closed cross section is configured on the same plane by the pair of front and rear convex lenses 540A and 540B, the connecting beam 540C, and the plate-like connecting portion 540E. The rigidity can be further increased, and thereby the positional accuracy of the pair of front and rear convex lenses 540A and 540B can be further increased.

  Next, a sixth modification of the above embodiment will be described.

  FIG. 9 is a view similar to FIG. 3 showing the main part of the vehicular lamp 610 according to this modification.

  As shown in the figure, the basic configuration of the vehicular lamp 610 according to the present modification is the same as that of the fifth modification, but the condensing lens 640 is integrally formed with the light guide 630. This is partially different from the case of the fifth modified example.

  That is, the condensing lens 640 of the present modification is also similar to the condensing lens 540 of the fifth modification, from the outer peripheral flange portions 640Ac and 640Bc in each of the pair of front and rear convex lenses 640A and 640B arranged in opposite directions. Bracket portions 640Ad and 640Bd extending in a flat plate shape toward the outer side in the vehicle width direction are formed at positions on a horizontal plane including the optical axis Ax.

  The pair of front and rear convex lenses 640A and 640B are integrated by connecting beams 640C and plate-like connecting portions 640E arranged on the left and right sides as in the case of the fifth modified example. The connecting portion 640E is formed to extend toward the front side of the lamp, and is connected to the light guide 630 at the extended forming portion 640F.

  On the other hand, the light guide 630 of the present modification is formed with a tab portion 630e extending from the peripheral surface portion 630c toward the vehicle width direction outer side at the end portion on the first end surface 630a side. The distal end portion is connected to the extension forming portion 640F of the condenser lens 640.

  The light guide body 630 and the condensing lens 640 integrally formed in this way are a total of three places including the left and right portions of the tab portion 630e of the light guide body 630 and the rear end portion of the plate-like connecting portion 640E of the condensing lens 640. Are fixed to the upper surfaces of the lens support portion 612Ad and the light guide support portion 612Ab, which are formed on the body main body 612A of the lamp body 612 and have the same configuration as that of the fifth modification.

  Also in this modification, the shape of the lens surface of each convex lens 640A, 640B is the same as in the case of the fifth modification.

  Even when the configuration of the present modification is employed, the same effects as those of the fifth modification can be obtained.

  In addition, in this modification, the light guide 630 and the condenser lens 640 are integrally formed, so that the number of parts of the vehicular lamp 610 can be reduced.

  In addition, by adopting a configuration in which the light guide 630 and the condenser lens 640 are integrally molded in this way, the positional relationship accuracy between them can be increased, and the screws 34 used to fix them to the body main body 612A. The number of tightening points can be further reduced, and the support structure can be further simplified.

  In addition, the numerical value shown as a specification in the said embodiment and its modification is only an example, and of course, you may set these to a different value suitably.

  The invention of the present application is not limited to the configuration described in the above-described embodiment and its modifications, and a configuration with various other changes can be adopted.

10, 110, 210, 310, 410, 510, 610 Vehicle lamp 12, 512, 612 Lamp body 12A, 512A, 612A Body main body 12Aa Rear wall 12Aa1 Light source support hole 12Ab, 12Ac, 512Ab, 612Ab Light guide support 12Ad, 512Ad, 612Ad Lens support portion 12B Cover member 14 Translucent cover 16 Extension panel 16a Opening portion 20 Light source unit 22 Light emitting element 24 Substrate 26 Socket 26a Radiation fin 28 Elastic seal member 30, 630 Light guide 30a, 630a First end surface 30b 2nd end surface 30c, 630c Peripheral surface part 30d, 630e Tab part 30s Reflective element 32 Metal fitting 34 Screw 40, 140, 240, 340, 440, 540, 640 Condensing lens 40A, 40B, 140A, 1 40B, 240A, 240B, 340A, 340B, 440A, 440B, 540A, 540B, 640A, 640B Convex lens 40Aa, 40Ba Lens surface (lens surfaces facing each other)
40Ab, 40Bb Lens surface (opposite lens surface)
40Ac, 40Bc, 140Ac, 140Bc, 240Ac, 240Bc, 340Ac, 340Bc, 440Ac, 440Bc, 540Ac, 540Bc, 640Ac, 640Bc Outer peripheral flange 40Ad, 40Bd, 140Ad, 140Bd, 240Ad, 240Bd, 340B, 440B, 440B, 440B 540Ad, 540Bd, 640Ad, 640Bd Bracket part 140C, 440C, 540C, 640C Connecting beam 240D Columnar part 340E, 440E, 540E, 640E Plate-like connecting part 640F Extension forming part Ax Optical axis

Claims (6)

In a vehicle lamp comprising: a light source unit in which a light source is supported by a socket; and a light guide that guides light emitted from the light source to enter a required direction.
The light source unit is detachably supported on the lamp body in the socket,
A condensing lens is disposed between the light source unit and the light guide to collect the light emitted from the light source and enter the light guide.
2. The vehicular lamp according to claim 1, wherein the condensing lens is composed of a pair of convex lenses arranged in opposite directions.   2. The vehicular lamp according to claim 1, wherein each of the pair of convex lenses includes a biconvex lens in which a curvature of a lens surface facing each other is larger than a curvature of an opposite lens surface.   The vehicular lamp according to claim 1, wherein the pair of convex lenses are formed of a single member.   4. The vehicular lamp according to claim 3, wherein the pair of convex lenses are integrated by a connecting beam formed so as to connect peripheral edges of the convex lenses.   5. The vehicular lamp according to claim 3, wherein the pair of convex lenses are integrated by connecting the central portions of the convex lenses.   The vehicular lamp according to any one of claims 1 to 5, wherein a bracket for fixing the condenser lens to the lamp body is integrally formed with the condenser lens.

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