JP2010105426A - License plate lamp - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To inexpensively obtain a license plate lamp also having a lane mark irradiation function. <P>SOLUTION: In a right-hand side license plate lamp 10R, a lens 14 attached to a lower-end opening 12a of a light body 12 thereof is partitioned into a first lens region 14A which emits a light from a light source bulb 16 for radiating visible light and infrared light as a light toward a license plate 4; and a second lens region 14B which emits light from the light source bulb as light toward a right-hand side obliquely lateral region of a road surface 100 behind a vehicle. In the vicinity of the second lens region 14B in a light chamber 20, a translucent member 18 formed of infrared light transmitting resin is disposed to change the light emitted from the second lens region 14B into infrared light. This allows the license plate lamp to irradiate the license plate 4 with visible light and irradiate a lane mark with the infrared light simultaneously using the light emitted from the single light source bulb 16. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a license plate lamp disposed in the vicinity of the upper edge of a license plate, and more particularly to a license plate lamp having a lane mark irradiation function.

  2. Description of the Related Art Conventionally, as a configuration of a license plate lamp, a light source bulb such as an incandescent bulb as a light source is known as described in, for example, “Patent Document 1”.

  On the other hand, for example, as described in “Patent Document 2”, a light emitting diode as a light source has been proposed. At that time, the vehicle lighting device described in “Patent Document 2” has a function as a back monitor lamp in addition to a function as a license plate lamp, and a white light emitting diode is used as a light source of the license plate lamp. In addition, an infrared light emitting diode is used as a light source of a back monitor lamp.

JP 2000-168438 A JP 2007-14504 A

  By the way, in recent vehicles, a lane mark irradiation lamp is often provided.

  This lane mark irradiation lamp is a lamp for irradiating infrared light toward an oblique side area on the road surface behind the vehicle, and in the state where infrared light is irradiated from this lamp, the road surface behind the vehicle is night-visioned. The lane mark (that is, the white lines on both the left and right sides extending along the road lane) can be recognized by taking an image with a camera and displaying the captured image on a monitor. As a result, automatic driving control of the vehicle is realized.

  Such a lane mark irradiation function is such that if the tail and stop lamp has a light source bulb as a light source as in the prior art, the infrared light contained in the light emitted from the light source bulb (that is, the near infrared ray). Area light).

  However, in recent tail and stop lamps, light emitting diodes have come to be used as light sources from the standpoints of responsiveness of turning on and off, freedom of design, and the like. However, since no infrared light is emitted from the light emitting diode, it is necessary to separately provide a lane mark irradiation lamp in order to perform lane mark irradiation.

  At that time, a part of the configuration of the back monitor lamp described in the above-mentioned “Patent Document 2” using an infrared light emitting diode as a light source is partially changed to irradiate light toward an oblique side area on the road surface behind the vehicle. It is also conceivable to configure it as a lamp for lane mark irradiation. However, in this case, since an infrared light emitting diode is required in addition to the white light emitting diode, there is a problem that the cost of the entire lamp increases accordingly.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a license plate lamp that can obtain a license plate lamp having a lane mark irradiation function at a low cost. is there.

  In the present invention, a light source bulb that emits visible light and infrared light is used as a light source, and a configuration including predetermined infrared light transmitting means is used to achieve the above object. It is.

That is, the license plate lamp according to the present invention is
In the license plate lamp arranged near the upper edge of the license plate provided at the rear of the vehicle and configured to irradiate light toward the license plate,
A lamp body, a lens attached to the lower end opening of the lamp body and forming a lamp chamber with the lamp body, and a light source bulb disposed in the lamp chamber and emitting visible light and infrared light. And
A first lens region that emits light from the light source bulb as light toward the license plate, and a second lens that emits light from the light source bulb as light toward an oblique side region on the vehicle rear road surface. Divided into areas,
Infrared light transmitting means for using infrared light as light emitted from the second lens region is provided at a predetermined position.

  As long as the “light source bulb” is configured to emit visible light and infrared light, the specific configuration such as the type and shape thereof is not particularly limited.

  As long as the “infrared light transmitting means” is capable of converting the light emitted from the second lens region into infrared light, a specific configuration for realizing this and the “infrared light transmitting means” The specific position of the “predetermined position” where the “means” is provided is not particularly limited.

  As shown in the above configuration, the license plate lamp according to the present invention is arranged in the vicinity of the upper edge of the license plate provided at the rear of the vehicle, and is configured to irradiate light toward the license plate. A lens attached to the lower end opening of the lamp body emits light from a light source bulb that emits visible light and infrared light as light directed to the license plate, and an oblique side of the vehicle rear road surface And a second lens region that is emitted as light directed toward the first region, and an infrared light transmitting means that uses light emitted from the second lens region as infrared light is provided at a predetermined position. Therefore, the following effects can be obtained.

  That is, of the light emitted from the light source bulb, the light directed to the first lens region is directed to the license plate through the first lens region as visible light and infrared light. Visible light irradiation (including infrared light irradiation) can be performed, and thereby the original function of the license plate lamp can be exhibited.

  On the other hand, of the light radiated from the light source bulb, the light directed to the second lens region is transmitted as infrared light through the second lens region by the infrared light transmitting means, and the oblique side region on the vehicle rear road surface. Therefore, the lane mark can be irradiated with infrared light, and the function as a lane mark irradiation lamp can be exhibited.

  Thus, in the license plate lamp according to the present invention, visible light irradiation to the license plate and infrared light irradiation to the lane mark can be simultaneously performed using light emitted from a single light source bulb. .

  Therefore, according to the present invention, a license plate lamp having a lane mark irradiation function can be obtained at low cost.

  In addition, even when a light emitting diode that does not emit infrared light is used as the light source of the tail and stop lamp, the lane mark irradiation can be performed without the necessity of separately providing a lane mark irradiation lamp. it can.

  In addition, in the present invention, since the emitted light from the single light source bulb is used for the visible light irradiation to the license plate and the infrared light irradiation to the lane mark, the infrared light for lane mark irradiation is used. Even when a red light component is included in the lens, the red light component makes the periphery of the lens of the license plate lamp appear reddish due to the presence of visible light for illuminating the license plate. Can be suppressed. As a result, it is possible to eliminate the possibility of giving the driver of the following vehicle a sense of incongruity. At this time, if the second lens region is arranged in front of the first lens region, such an effect can be further enhanced.

  In the above configuration, the specific configuration of the “infrared light transmitting means” is not particularly limited as described above. For example, the following configuration can be adopted.

  That is, the “infrared light transmitting means” can be formed of a light transmitting member made of an infrared light transmitting resin and disposed in the vicinity of the second lens region in the lamp chamber.

  By adopting such a configuration, the above-described effects can be obtained only by additionally disposing the light transmitting member with respect to the configuration of a normal license plate lamp. Therefore, this can further promote the cost reduction of the license plate lamp.

  Here, “infrared light transmitting resin” means a resin material having optical characteristics that transmits light in the near infrared region but does not transmit light in the visible light region. It is not limited.

  The “infrared light transmitting means” may be configured by forming an infrared light transmitting film on the surface of a light transmitting member disposed in the vicinity of the second lens region in the lamp chamber.

  By adopting such a configuration, a normal transparent resin material can be used as the material of the translucent member.

  Alternatively, the “infrared light transmitting means” may be configured by forming a portion of the second lens region of the lens with an infrared light transmitting resin.

  By adopting such a configuration, it is possible to eliminate the need to arrange a new member in the lamp chamber. As a result, the above-described effects can be obtained even when a sufficient space in the lamp compartment cannot be secured.

  In the above configuration, it is also possible to adopt a configuration in which a reflector is provided in the lamp chamber that reflects light from the light source bulb in a predetermined direction other than the first lens region or the second lens region toward the second lens region. It is.

  By adopting such a configuration, the light emitted from the light source bulb can be used effectively. Further, by adopting such a configuration, the light from the light source bulb is transmitted to the translucent member disposed in the vicinity of the second lens region of the lens or in the vicinity thereof as light directed toward the oblique side region of the vehicle rear road surface. It is possible to eliminate the need to form a plurality of lens elements or reflecting prism elements for emission, or to set the shape of the plurality of lens elements or reflecting prism elements to a reasonable shape.

  Here, the “predetermined direction” is obtained by reflecting light traveling toward the “predetermined direction” toward the second lens region, thereby obtaining outgoing light traveling from the second lens region toward an oblique lateral region on the road surface behind the vehicle. The specific direction is not particularly limited as long as it can be used.

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

  FIG. 1 is a perspective view showing a state in which a vehicle 2 provided with a pair of left and right license plate lamps 10L, 10R according to an embodiment of the present invention is traveling as viewed from the rear. FIG. 2 is a detailed view of the main part of FIG.

  As shown in these drawings, in the present embodiment, a pair of left and right license plate lamps 10L and 10R are disposed in the vicinity of the upper end edge of the license plate 4 provided at the rear portion of the vehicle 2. At that time, the license plate 4 is disposed in a recess 6 a formed in the trunk lid 6 of the vehicle 2.

  The pair of left and right license plate lamps 10L and 10R are arranged in a symmetrical relationship with respect to the center of the vehicle 2 in the vehicle width direction and have a symmetrical structure.

  The license plate lamp 10L on the left side is disposed in the vicinity of the upper left corner portion of the license plate 4. The license plate lamp 10L irradiates visible light toward the license plate 4 and irradiates infrared light toward a left oblique side region of the vehicle rear road surface 100.

  Then, the visible light irradiated from the license plate lamp 10L illuminates the substantially left half of the license plate 4 brightly, and the infrared light emitted from the license plate lamp 10L causes the vehicle 2 on the vehicle rear road surface 100. An infrared light distribution pattern PL is formed so as to straddle the lane mark 102L located on the left side of the lane on which the vehicle is traveling.

  On the other hand, the right license plate lamp 10 </ b> R is disposed in the vicinity of the upper right corner portion of the license plate 4. The license plate lamp 10R irradiates visible light toward the license plate 4 and irradiates infrared light toward a diagonally right side region of the vehicle rear road surface 100.

  Then, the visible light irradiated from the license plate lamp 10R illuminates the substantially right half of the license plate 4 brightly, and the infrared light emitted from the license plate lamp 10R causes the vehicle 2 on the vehicle rear road surface 100. An infrared light distribution pattern PR is formed across the lane mark 102R located on the right side of the lane on which the vehicle travels.

  The vehicle rear road surface with a night vision camera (not shown) mounted on the vehicle 2 in a state where infrared light is irradiated from the pair of left and right license plate lamps 10L and 10R to the left and right oblique side regions of the vehicle rear road surface 100. The lane marks 102L and 102R are made recognizable by capturing 100 and displaying the captured image on a monitor, thereby realizing automatic driving control of the vehicle 2 and the like.

  As described above, since the pair of left and right license plate lamps 10L and 10R have a symmetrical structure, a specific configuration of the right license plate lamp 10R will be described below.

  3 is a cross-sectional view taken along the line III-III of FIG. 2 showing the license plate lamp 10R on the right side. 4 is a detailed view of a portion IV in FIG. 3, and FIG. 5 is a cross-sectional view taken along line VV in FIG.

  As shown in these drawings, the license plate lamp 10 </ b> R is arranged to be positioned above the recess 6 a in the inner space of the trunk lid 6. At this time, the license plate lamp 10R is arranged such that the lens 14 faces the external space of the trunk lid 6 from the opening 6b formed in the upper surface wall of the recess 6a in the trunk lid 6.

  The license plate lamp 10R includes a light source bulb 16 and a transparent light source 20 formed in a lamp chamber 20 formed by a lamp body 12 that opens substantially downward and a lens 14 that is attached to a lower end opening 12a of the lamp body 12. The optical member 18 is arranged.

  The lower end opening 12a of the lamp body 12 is formed in a substantially rectangular shape that is horizontally long in a plan view, and the lower end opening 12a is slightly higher in the rear wall than in the front wall. A bulb insertion hole 12b is formed in a substantially central portion of the upper wall portion of the lamp body 12.

  The light source bulb 16 is positioned and fixed to the upper wall portion of the lamp body 12 in a state of being inserted substantially downward from the bulb insertion hole 12b of the lamp body 12. The light source bulb 16 is an incandescent bulb, and is arranged so that its filament 16 a extends in the vehicle width direction at a substantially central portion in the lamp chamber 20.

  The lens 14 is made of a colorless and transparent resin material, and is formed in two steps. In other words, the lens 14 has a substantially rear half portion formed as an upper horizontal portion, a front end portion formed as a lower horizontal portion, and an intermediate portion between the two inclined backward by about 40 to 50 °. It is formed as an inclined portion extending upward at a corner.

  The upper horizontal portion of the lens 14 is configured as a first lens region 14 </ b> A that emits light from the light source bulb 16 toward the license plate 4, and an inclined portion is provided from the light source bulb 16. It is configured as a second lens region 14B that emits light as light traveling toward the right diagonal side region of the vehicle rear road surface.

  In order to realize such an optical function, a plurality of reflecting prism elements 14As are formed on the inner surface (that is, the upper surface) of the first lens region 14A. The plurality of reflecting prism elements 14As have a sawtooth cross-sectional shape and extend in the vehicle width direction.

  In each of the reflecting prism elements 14As, light from the light source bulb 16 is incident on the reflecting prism element 14As on the front inclined surface, and then totally reflected on the rear inclined surface. Thus, the direction of light emitted from the outer surface (that is, the lower surface) of the first lens region 14A is largely deflected to the front side with respect to the direction of light when entering the reflecting prism element 14As from the light source bulb 16. It has become.

  At this time, the first lens region 14A as a whole is such that the emitted light is slightly diffused in the front-rear direction around the direction slightly forward with respect to the direction directly below, and to some extent in the left-right direction. It has become. As a result, an irradiation region on the right side indicated by a mesh line in FIG. 2 is secured.

  On the other hand, as shown in FIG. 4, the second lens region 14 </ b> B is formed in a transparent shape, and the translucent member 18 is disposed in the vicinity of the inner surface thereof.

  The translucent member 18 has a configuration in which a plurality of reflecting prism elements 18s are formed on the upper surface of a plate-like member made of an infrared light translucent resin composed of a polycarbonate resin or the like. The translucent member 18 is fixedly supported on the side wall portion of the lamp body 12 at both ends in the vehicle width direction in a state where the lower surface thereof is disposed close to the inner surface of the second lens region 14B. Yes.

  The plurality of reflecting prism elements 18s in the translucent member 18 have a sawtooth shape in cross section along the vertical plane extending in the front-rear direction, and the cross section shape along the vertical plane extending in the vehicle width direction is set to the right. The shape is such that the rising convex arc is continued in a substantially sawtooth shape.

  In each of the reflecting prism elements 18s, light from the light source bulb 16 is incident on the reflecting prism element 18s on the rear inclined surface, and then totally reflected on the front inclined surface. Thus, the direction of the light emitted from the outer surface of the second lens region 14B is largely deflected to the rear side with respect to the direction of light when entering the reflecting prism element 18s from the light source bulb 16. .

  At this time, as a whole of the translucent member 18 and the second lens region 14B, the emitted light is slightly diffused slightly upward and downward toward the right diagonally rear side, and diffused to some extent in the left-right direction. ing. As a result, an irradiation region on the right side indicated by hatching in FIG. 1 is secured.

  As described above, the license plate lamp 10R is arranged so that the lens 14 faces the external space of the trunk lid 6 from the opening 6b formed in the upper surface wall of the recess 6a in the trunk lid 6. In this case, the lens 14 is arranged such that a portion other than the substantially lower half of the second lens region 14B is hidden behind the trunk lid 6 in the rear view of the vehicle.

  Next, the effect of this embodiment is demonstrated.

  The right license plate lamp 10 </ b> R according to the present embodiment is arranged in the vicinity of the upper end edge of the license plate 4 provided at the rear portion of the vehicle 2, and is configured to emit light toward the license plate 4. The lens 14 attached to the lower end opening 12a of the lamp body 12 emits light from the light source bulb 16 that emits visible light and infrared light as light directed to the license plate 4, and a first lens region 14A. And the second lens region 14B that is emitted as light directed toward the right oblique side region of the vehicle rear road surface 100, and infrared light that uses the light emitted from the second lens region 14B as infrared light. As a transmitting means, a configuration in which a light transmitting member 18 made of an infrared light transmitting resin is disposed in the vicinity of the second lens region 14B in the lamp chamber 20; Since Tsu, it is possible to obtain the following effects.

  That is, of the light radiated from the light source bulb 16, the light directed to the first lens region 14A is directed to the license plate 4 through the first lens region 14A as visible light and infrared light. Therefore, visible light irradiation (including infrared light irradiation) can be performed on the license plate 4, and thereby the original function of the license plate lamp can be exhibited.

  On the other hand, the light emitted from the light source bulb 16 toward the second lens region 14B is transmitted to the right of the vehicle rear road surface 100 as infrared light by the translucent member 18 via the second lens region 14B. Since the light is directed to the oblique side region, the right lane mark 102R can be irradiated with infrared light, and the function as a lane mark irradiation lamp can be exhibited.

  As described above, in the license plate lamp 10R on the right side according to the present embodiment, using the light emitted from the single light source bulb 16, the visible light irradiation to the license plate 4 and the infrared light irradiation to the lane mark 102R are performed. Can be performed simultaneously.

  Therefore, according to this embodiment, the license plate lamp 10R having the lane mark irradiation function can be obtained at low cost.

  In addition, even when a light emitting diode that does not emit infrared light is used as the light source of the tail and stop lamp, the lane mark irradiation can be performed without the necessity of separately providing a lane mark irradiation lamp. it can.

  In addition, in the present embodiment, since the emitted light from the single light source bulb 16 is used for the visible light irradiation to the license plate 4 and the infrared light irradiation to the lane mark 102R, the infrared light for lane mark irradiation is used. Even in the case where the red light component is included, the periphery of the lens 14 of the license plate lamp 10R looks reddish due to the red light component included in the infrared light. Can be effectively suppressed by the presence of visible light. As a result, it is possible to eliminate the possibility of giving the driver of the following vehicle a sense of incongruity. At this time, in the present embodiment, since the second lens region 14B is disposed on the front side of the first lens region 14A, such an effect can be further enhanced.

  In the present embodiment, infrared light transmitting means that uses infrared light as light emitted from the second lens region 14B is disposed in the vicinity of the second lens region 14B in the lamp chamber 20. Since the translucent member 18 is made of a translucent resin, the above-described effects can be obtained only by additionally arranging the translucent member 18 with respect to the configuration of a normal license plate lamp. Therefore, this can further promote the cost reduction of the license plate lamp 10R.

  The left license plate lamp 10L according to the present embodiment is also arranged in a symmetrical relationship with respect to the center in the vehicle width direction of the vehicle 2 with respect to the right license plate lamp 10R, and has a symmetrical structure. Therefore, the same effects as those of the right license plate lamp 10R 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. 6A shows a license plate lamp 110R according to this modification, which is substantially the same as FIG.

  As shown in the figure, the license plate lamp 110R has the same basic configuration as the license plate lamp 10R according to the above embodiment, but the configuration of the translucent member 118 is the translucent member of the above embodiment. 18 is different.

  That is, the light transmissive member 118 of this modification has a configuration in which an infrared light transmissive film 118B is formed on the lower surface of a light transmissive member main body 118A made of a colorless and transparent resin material. At that time, the shape and arrangement of the light transmissive member main body 118A are exactly the same as those of the light transmissive member 18 of the above embodiment.

  Even in the case of adopting the configuration of this modification, the light emitted from the second lens region 14B can be infrared light, and as a result, the license plate having the lane mark irradiation function as in the case of the above embodiment. The lamp 110R can be obtained at a low cost.

  At that time, by adopting the configuration of the present modification, a normal transparent resin material can be used as the material of the translucent member main body 118A.

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

  FIG. 6B shows a license plate lamp 210R according to this modification, which is substantially the same as FIG.

  As shown in the figure, the license plate lamp 210R has the same basic configuration as the license plate lamp 10R according to the above embodiment, but the configuration of the lens 214 is different from the lens 14 of the above embodiment. Moreover, the translucent member 18 of the above embodiment is not provided.

  That is, the lens 214 of the present modified example emits the first lens region 14 </ b> A that is emitted as light toward the license plate 4 and the light that is directed toward the right diagonal side region of the vehicle rear road surface 100, similar to the lens 14 of the above embodiment. The second lens region 214B is divided into the second lens region 214B. The second lens region 214B is formed of an infrared light transmitting resin by two-color molding. In addition, the second lens region 214B is not formed in a transparent shape like the second lens region 14B of the above embodiment, and a plurality of reflecting prism elements 214Bs are formed on the inner surface thereof. . The optical functions of the reflecting prism elements 214Bs are substantially the same as those of the reflecting prism elements 18s in the light transmitting member 18 of the above embodiment.

  Even in the case of adopting the configuration of this modification, the light emitted from the second lens region 214B can be infrared light, and thus, as in the case of the above-described embodiment, a license plate having a lane mark irradiation function. The lamp 210R can be obtained at low cost.

  At this time, by adopting the configuration of the present modification, it is possible to eliminate the need to dispose a new member such as the translucent member 18 of the above embodiment in the lamp chamber 20. As a result, the above-described effects can be obtained even when a sufficient space in the lamp compartment cannot be secured.

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

  FIG. 6C shows a license plate lamp 310R according to this modification, which is substantially the same as FIG.

  As shown in the figure, the license plate lamp 310R has the same basic configuration as the license plate lamp 10R according to the above embodiment, but the configuration of the lens 314 and the translucent member 318 is the lens of the above embodiment. 14 and the translucent member 18, and in this modification, a reflector 322 is additionally arranged.

  Similarly to the lens 14 of the above-described embodiment, the lens 314 of the present modified example emits the first lens region 14A that is emitted as light toward the license plate 4 and the light that is emitted as light toward the right oblique side region of the vehicle rear road surface 100. The second lens region 314B is different in shape from the two lens regions 314B. That is, the second lens region 314B is formed in a transparent shape like the second lens region 14B of the above embodiment, but its inclination angle is considerably larger than that of the second lens region 14B of the above embodiment. Yes. Specifically, the second lens region 314B has an inclination angle of about 70 to 80 ° toward the rear.

  The translucent member 318 of this modification is configured by a parallel flat plate made of infrared light transmitting resin. At this time, the translucent member 318 is fixedly supported on the side wall portion of the lamp body 12 at both ends in the vehicle width direction in a state where the lower surface thereof is arranged close to the inner surface of the second lens region 314B. ing.

  The reflector 322 of the present modification is fixedly supported by the light transmissive member 318 in a state where the reflector 322 is disposed in the lamp chamber 20 in the vicinity of the front of the light transmissive member 318. The reflector 322 reflects light from the light source bulb 16 toward the front side of the second lens region 314B toward the second lens region 314B on the reflection surface 322a. At this time, the reflected light from the reflector 322 is emitted from the second lens region 314 </ b> B as infrared light through the translucent member 318.

  The reflection surface 322a of the reflector 322 diffuses the reflected light slightly diagonally downward and slightly upward and downward, and to some extent in the left-right direction. As a result, an irradiation region on the right side indicated by hatching in FIG. 1 is secured. In order to realize this, the reflecting surface 322a is formed with a plurality of reflecting elements 322s that deflect light from the light source bulb 16 obliquely to the right and diffuse in the horizontal direction.

  Even in the case of adopting the configuration of this modification, the light emitted from the second lens region 314B can be infrared light, and as in the case of the above-described embodiment, the license plate having the lane mark irradiation function as well. The lamp 310R can be obtained at low cost.

  In that case, the light radiated | emitted from the light source bulb | ball 16 can be utilized effectively by employ | adopting the structure of this modification. Further, by adopting such a configuration, a plurality of reflecting prism elements 18s can be formed on the light transmitting members 18 and 118 as in the above embodiment and the above first modification, or as in the above second modification. It is not necessary to form a plurality of reflecting prism elements 214Bs in the second lens region 214B. Further, by adopting such a configuration, it becomes possible to easily control the light emitted from the second lens region 314B.

  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 figure which shows the state which the vehicle provided with the left-right paired license plate lamp which concerns on one Embodiment of this invention is running seeing from the back Detailed view of the main part of FIG. FIG. 2 is a cross-sectional view taken along line III-III in FIG. 2, showing the right license plate lamp according to the embodiment. Detail view of part IV in Fig. 3 VV line sectional view of FIG. FIG. 4 is a view similar to FIG. 4 showing a modification of the embodiment.

Explanation of symbols

2 Vehicle 4 License plate 6 Trunk lid 6a Recess 6b Opening 10L, 10R, 110R, 210R, 310R License plate lamp 12 Lamp body 12a Lower end opening 12b Bulb insertion hole 14, 214, 314 Lens 14A First lens region 14As, 18s , 214Bs Reflective prism element 14B, 214B, 314B Second lens region 16 Light source bulb 16a Filament 18, 118, 318 Translucent member 18a Both ends in the vehicle width direction 20 Lamp chamber 100 Vehicle rear road surface 102L, 102R Lane mark 118A Translucent member body 118B Infrared light transmission film 322 Reflector 322a Reflecting surface 322s Reflecting element PL, PR Infrared light distribution pattern

Claims (5)

In the license plate lamp arranged near the upper edge of the license plate provided at the rear of the vehicle and configured to irradiate light toward the license plate,
A lamp body, a lens attached to the lower end opening of the lamp body and forming a lamp chamber with the lamp body, and a light source bulb disposed in the lamp chamber and emitting visible light and infrared light. And
A first lens region that emits light from the light source bulb as light toward the license plate, and a second lens that emits light from the light source bulb as light toward an oblique side region on the vehicle rear road surface. Divided into areas,
A license plate lamp, characterized in that infrared light transmitting means for making light emitted from the second lens region infrared light is provided at a predetermined position.   2. The license according to claim 1, wherein the infrared light transmitting means is formed of a light transmitting member made of an infrared light transmitting resin disposed in the vicinity of the second lens region in the lamp chamber. Plate lamp.   The infrared light transmitting means is configured by forming an infrared light transmitting film on a surface of a light transmitting member disposed in the vicinity of the second lens region in the lamp chamber. Item 1. A license plate lamp according to item 1.   2. The license plate lamp according to claim 1, wherein the infrared light transmitting means is formed by forming a portion of the second lens region of the lens with an infrared light transmitting resin.   A reflector is provided in the lamp chamber for reflecting light from the light source bulb toward a predetermined direction other than the first lens region or the second lens region toward the second lens region. The license plate lamp according to claim 1.

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