JP2018101476A - Vehicular lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent light emitted from a lamp unit from being made incident into imaging means through a light-transmissive cover, in a vehicular lamp having the lamp unit and imaging means disposed in a lamp housing.SOLUTION: In imaging means 4, provided is a hood 42 configured to prevent light emitted from lamp units 2, 3 from being incident directly, and in a partial region of a light-transmissive cover 12 of a lamp housing, provided is a light derivation part 121 configured to derive light guided inside toward the outside of the hood 42. The light derivation part 121 is configured as a sheet part having a plane so as to project a region of the light-transmissive cover 12 opposite to the hood 42 toward the rear of a lamp. A front end part of the hood 42 approaches or contacts with the plane of the sheet part 121.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a vehicular lamp, and more particularly to a vehicular lamp having an imaging device disposed in a lamp housing.

  In vehicles such as automobiles, in order to realize automatic driving control and automatic light distribution control of headlamps, a camera (imaging device) is arranged in the automobile, and the front area of the automobile is imaged with this camera, and the captured image is captured. It has been proposed to analyze and detect other vehicles such as an oncoming vehicle and a preceding vehicle existing in the front area. For example, ADB (Adaptive Driving Beam) light distribution control has been proposed as a technique for controlling light distribution of a headlamp (headlight) of an automobile. This ADB light distribution control is a technology that controls a part of the high beam light distribution pattern of the headlamp so as not to dazzle other vehicles such as oncoming vehicles and preceding vehicles detected from images captured by the camera. is there.

  In this technique, in order to realize high-precision ADB light distribution control, Japanese Patent Application Laid-Open No. 2004-228561 proposes a technique in which a camera is disposed in a lamp housing of a headlamp. According to Patent Document 1, since the camera optical axis is close to the lamp optical axis, the direction of the other vehicle detected from the image captured by the camera, that is, the angle when the other vehicle is viewed from the host vehicle, is the headlamp. Therefore, the ADB light distribution control in the headlamp can be performed easily and with high accuracy.

  When the camera is disposed in the lamp housing as in Patent Document 1, a part of the light emitted from the lamp unit disposed in the same lamp housing is reflected directly or after being reflected by the translucent cover. The image is incident on the lens barrel of the camera and whiteout due to halation or the like is likely to occur in an image captured by the camera.

JP 2013-147138 A JP2013-164913A

  In order to prevent light emitted from such a lamp unit from entering the camera, in Patent Document 2, a hood portion is configured by surrounding the camera with a part of an extension disposed in the lamp. Thus, a technique has been proposed in which the light emitted from the lamp unit is not incident on the camera.

  In Patent Document 2, since there is a gap between the hood part and the translucent cover, a part of the light emitted from the lamp unit enters the inside of the hood part through this gap and enters the camera. Sometimes. Further, when the light emitted from the lamp unit passes through the light transmissive cover of the lamp housing, a part of the light is guided through the light transmissive cover and proceeds to the inside of the hood portion. May enter the camera. Therefore, it is difficult to reliably prevent the occurrence of whiteout in the camera.

  An object of the present invention is to provide a vehicular lamp in which light emitted from a lamp unit is prevented from entering an imaging means through a translucent cover.

  The present invention is a vehicular lamp in which a lamp unit and an image pickup means are disposed in a lamp housing having a translucent cover, in order to prevent light emitted from the lamp unit from entering the image pickup means. A light derivation unit is provided in a partial region of the translucent cover to guide light guided through the hood toward the outside of the hood.

The 1st-4th form of the light derivation | leading-out part in this invention is as follows.
1st form: It is a sheet | seat part which has the plane which protruded the area | region which opposes the hood of a translucent cover toward the lamp | ramp back, and the front-end part of a hood adjoins or contacts the plane of the said sheet | seat part.
Second embodiment: a convex portion in which a region facing the hood of the light-transmitting cover is provided so as to protrude forward of the lamp, and the front end portion of the hood is disposed inside the convex portion.
3rd form: It is comprised by the optical step provided in the at least one part of the area | region surrounding the area | region which opposes the food | hood of a translucent cover.
4th form: It is comprised with the heterogeneous material provided in the area | region which opposes the food | hood of a translucent cover, or at least one part of the area | region surrounding the said area | region.

  According to the present invention, since the light guided inside the translucent cover is led out toward the outside of the hood of the imaging means at the light outlet, it is prevented from entering the imaging means. Thereby, the occurrence of whiteout in the image pickup means can be prevented, and suitable light distribution control of the lamp unit can be realized.

The front view of a part of the motor vehicle equipped with the headlamp provided with the light derivation part of Embodiment 1 of the present invention. The expanded sectional view of the right headlamp of FIG. The block block diagram of the lighting control apparatus containing a right-and-left headlamp. FIG. 3 is a longitudinal sectional view of a light lead-out unit according to the first embodiment. FIG. 6 is a longitudinal sectional view of a modification of the light derivation unit according to the first embodiment. FIG. 6 is a longitudinal sectional view of another modification of the light derivation unit according to the first embodiment. FIG. 10 is a longitudinal sectional view of still another modification of the light derivation unit according to the first embodiment. FIG. 6 is a longitudinal sectional view of a light lead-out part according to a second embodiment. The elements on larger scale for demonstrating the light derivation | leading-out of the light derivation | leading-out part of Embodiment 2. FIG. FIG. 10 is a front view illustrating a modification of the light derivation unit according to the second embodiment. FIG. 6 is a longitudinal sectional view of a light lead-out part according to a third embodiment. FIG. 6 is a longitudinal sectional view of a light lead-out part according to a fourth embodiment. FIG. 10 is a perspective view of a part of the lamp according to the fifth embodiment. FIG. 10 is a front view of a part of a lamp according to a modification of the fifth embodiment.

(Embodiment 1)
Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view of a first embodiment in which the present invention is applied to an automobile headlamp, and a right headlamp R-HL is attached to the right front portion of a vehicle body BD of an automobile CAR. Although not shown in FIG. 1, a left headlamp configured symmetrically with the right headlamp R-HL is attached to the left front portion of the vehicle body BD.

  In the right headlamp R-HL, a main lamp unit 2 and a sub lamp unit 3 are disposed in a lamp housing 1, and a camera 4 as an imaging unit according to the present invention is further disposed. Here, the main lamp unit 2 is disposed outside the lamp housing 1 in the vehicle width direction, the sub lamp unit 3 is disposed inside, and the camera 4 is disposed further inside.

  FIG. 2 is a horizontal sectional view of the right headlamp R-HL. The lamp housing 1 includes a container-shaped lamp body 11 having an open front region, and a translucent cover 12 fixed so as to cover the opening of the lamp body 11. The translucent cover 12 transmits light emitted from the main and sub lamp units 2 and 3 to irradiate the front area of the automobile. Further, the camera 4 can image the front area of the automobile through the translucent cover 12.

  An extension 13 is disposed in the lamp housing 1, and the extension 13 defines the main lamp portion, the sub lamp portion, and the camera portion in order from the left side of FIG. Yes. The extension 13 has a surface coated with aluminum or plated with aluminum and is configured as a pseudo reflector.

  The main lamp unit 2 uses a plurality of white LEDs (light emitting diodes) 21 as a light source, the white light emitted by the white LEDs 21 is reflected by a reflector 22, and the reflected light is projected in front of the automobile by a projection lens 23. It is configured as a projector-type lamp unit that performs illumination. As will be described later, by selecting a plurality of white LEDs 21 to emit light, it is possible to switch and control the light distribution of the main lamp unit between a high beam distribution and a low beam distribution. Further, similarly, it is possible to perform control by ADB light distribution in which a partial region of the high beam light distribution pattern is not selectively illuminated.

  Here, the sub lamp unit 3 is configured as a clearance lamp. The clearance lamp 3 uses a white LED 31 as a light source, the white light emitted from the white LED 31 is reflected by a reflector 32, and an inner lens 33 arranged on the front side of the reflector 32 has a required light distribution pattern in front of the automobile. It is configured as a reflector type lamp unit for illumination.

  The camera 4 is configured as a camera including a CCD image sensor or a CMOS image sensor. The camera 4 is disposed on the rear surface side of the extension 13, and the lens barrel 41 provided on the front surface of the camera 4 is disposed facing the opening window 131 opened in a part of the extension 13. Yes. The lens barrel 41 includes a hood 42 having a quadrangular pyramid shape, and the hood 42 is configured such that the imaging field angle of the camera 4 can ensure a predetermined imaging range. The camera 4 can image the front area of the automobile through the translucent cover 12.

  Furthermore, a lamp ECU (electronic control unit) 5 is disposed in the lamp housing 1 at a position where it is not exposed to the outside by the extension 13. The lamp ECU 5 is electrically connected to the main lamp unit 2, the sub lamp unit 3, and the camera 4. In particular, the lamp ECU 5 controls the lighting state of the main lamp unit 2 based on the image captured by the camera 4. It is like that.

  FIG. 3 is a block diagram of a lighting control device including left and right headlamps. The lamp ECU 5 includes a main lamp control unit 51, a sub lamp control unit 52, and a camera control unit 53, and receives a control signal from the vehicle ECU 6. The main lamp unit 2, the sub lamp unit 3, and the camera 4 are controlled. The main lamp control unit 51 executes on / off control of the main lamp unit 2, high beam / low beam light distribution control, and ADB light distribution control. The sub lamp control unit 52 controls turning on / off of the sub lamp unit 3. Furthermore, the camera control unit 53 includes an other vehicle detection unit 531 that analyzes an image captured by the camera 4 and detects other vehicles existing ahead of the automobile, that is, an oncoming vehicle and a preceding vehicle, and the camera. 4, for example, control of imaging timing, capturing operation of captured images, and the like.

  Here, the main lamp control unit 51 is based on the light distribution setting unit 511 for setting an appropriate light distribution corresponding to the other vehicle detected by the other vehicle detection unit 531 and the set light distribution. A lighting control unit 512 that controls turning on / off of the plurality of white LEDs 21 of the main lamp unit 2 is provided.

  When the other vehicle detection unit 531 detects an oncoming vehicle or a preceding vehicle existing in the front area of the host vehicle, the main lamp control unit 51 uses the light distribution setting unit 511 to change the light distribution of the main lamp unit 2 to a high beam distribution or a low beam. Set to either light distribution or ADB light distribution. The lighting control unit 512 controls the lighting of the plurality of white LEDs 21 either collectively or selectively in order to realize the set light distribution. Thereby, the light distribution control which illuminates the front area of the own vehicle as brightly as possible without dazzling the oncoming vehicle and the preceding vehicle is realized.

  Note that the configuration of the left headlamp L-HL of the automobile shown in FIG. 3 is symmetrical to the right headlamp R-HL, and the high beam distribution in the main lamp unit also in the left headlamp L-HL. Control of low beam light distribution and ADB light distribution is executed.

  FIG. 4 is a vertical cross-sectional view of a region including a part of the hood 42 and the translucent cover 12 provided on the lens barrel 41 of the camera 4, that is, a light lead-out portion in the first embodiment. The front end portion 42 a of the hood 42 is arranged in contact with or close to the inner surface of the translucent cover 12. Here, the front end 42a of the hood 42 is positioned on a plane perpendicular to the optical axis of the lens barrel 42, in other words, the optical axis of the camera, and is a sheet integrally formed on the inner surface of the translucent cover 12. It is in close contact with the rear surface of the part 121. The sheet portion 121 is projected so that the thickness of the translucent cover 12 facing the hood 42 increases toward the rear of the lamp, and the projected rear surface is formed in a plane perpendicular to the camera optical axis. And constitutes a light derivation section in the present invention.

  As described above, the left and right headlamps L-HL and R-HL are controlled to be turned on by the main lamp unit 2 and the sub lamp unit 3 under the control of the lamp ECU 5. In particular, the main lamp unit 2 is controlled with a predetermined light distribution. Most of the light emitted from the main and sub lamp units 2 and 3 is irradiated through the translucent cover 12 to the front of the automobile. On the other hand, a part of the emitted light L1 (see FIG. 4) is reflected backward by the inner surface of the translucent cover 12. The reflected light is directed to the camera 4, most of which is shielded by the hood 42, and is prevented from entering the lens barrel 42, that is, the camera 4.

  The other part L2 (see FIG. 4) of the light emitted from the lamp units 2 and 3 is guided from the inner surface of the transparent cover 12 while being internally reflected. A part of the guided light is guided to a region facing the hood 42, that is, a rectangular region surrounded by the front end portion 42a of the hood 42, and leaks to the inner surface side of the translucent cover 12 in this region. The light may enter the inside of the hood 42, in other words, the camera 4 (two-dot chain line in FIG. 4). In this way, when light enters the camera 4, the above-described whiteout occurs.

  Here, a sheet portion 121 is integrally provided in a region facing the hood 42 on the inner surface of the translucent cover 12, and since the rear surface of the sheet portion 121 is flat, the front end portion 42 a of the hood 42 is disposed on the rear surface. Can be intimate. Usually, the translucent cover 12 is formed in a three-dimensional curved surface corresponding to the shape of the vehicle body of the automobile, and therefore, unless the front end portion 42a of the hood 42 is made to follow the three-dimensional shape, the front end portion 42a is transparent. Although it cannot be brought into close contact with the inner surface of the light cover 12, the front end portion 42a of the hood 42 only needs to be configured in a simple plane by providing the seat portion 121, and the hood 42 can be easily manufactured.

  In this way, the rear surface of the seat portion 121 and the front end portion 42a of the hood 42 are in close contact with each other, and no gap is formed between them, so that part of the light emitted from the lamp units 2 and 3 is part of the seat portion. It does not enter the inside of the hood 42 through the gap between the rear surface 121 and the front end portion 42 a of the hood 42, and does not enter the camera 4.

  Even if a part of the light L2 guided through the translucent cover 12 is guided to a region facing the hood 42, the rear surface of the sheet portion 121 is in relation to the optical axis of the lens barrel 41. Since the light L2 that has been guided is totally reflected on the plane, the light L2 that has been guided is led out from the translucent cover 12 and is prevented from entering the camera 4. This prevents the occurrence of whiteout.

  Here, when the front end portion 42a of the hood 42 is not in close contact with the rear surface of the seat portion 121 due to a manufacturing error or the like, as shown in FIG. 5A, rubber, soft resin, or the like is attached to the front end portion 42a of the hood. A light-shielding ring 43 made of a light-impermeable member having the above-described elasticity may be provided to prevent light from entering from the gap. Alternatively, as shown in FIG. 5B, a rectangular frame-shaped groove 121a may be provided in the rear surface of the seat portion 121, and the front end 421 of the hood 42 may be inserted into the groove 121a. The labyrinth structure formed by the groove 121a and the front end portion 42a can prevent light from entering the camera 4.

  In the first embodiment, the extension 13 may be used to prevent the light emitted from the lamp units 2 and 3 from entering the camera. For example, as shown in FIG. 6A, a part 132 of the extension 13 is formed in a rectangular tube shape so as to cover the outer periphery of the hood 42. In this case, the front end portion 132a of the part 132 only needs to be in close contact with the rear surface of the seat portion 121. Even if the front end portion 42a of the hood 42 is not in close contact with the rear surface of the seat portion 121, it is incident on the camera 4. Can be prevented.

  Alternatively, as shown in FIG. 6B, a part 133 of the extension 13 may be formed in a quadrangular pyramid shape and configured as a hood of the camera 4. The part 133 is arranged so as to surround the lens barrel 41 of the camera 4 and the front end part 133a thereof is brought into close contact with the rear surface of the seat part 121, so that the hood 42 is not present or the front end of the hood 42 is provided. Even if the portion is not in close contact with the rear surface of the sheet portion 121, the incidence on the camera 4 can be prevented. This example also has the effect of eliminating the need for a separate hood.

  6 (a) and 6 (b), the front end portions 132a and 133a of the portions 132 and 133 of the extension 13 are brought into close contact with the rear surface of the seat portion 121, or FIGS. As shown in b), it is preferable to dispose a light shielding member such as a light shielding ring 43 or a groove 121a as a labyrinth structure.

  Instead of attaching the hood to the lens barrel, as shown in FIG. 7, a configuration in which the camera 4A is housed in a pyramid-shaped hood 42A may be adopted. The hood 42A is made of a metal material having high heat conductivity and has a bottom surface. A substrate 44 made of a material having high heat conductivity is fixed to the bottom surface, and the substrate 44 is used as a small camera module. The configured camera 4A is mounted. In the camera module 4A, an imaging element and a lens are integrally configured, and since it is already known, detailed description thereof is omitted here. A heat sink 45 is joined to the outside of the bottom surface of the hood 42A.

  In this configuration, the light emitted from the lamp units 2 and 3 is blocked by the hood 42A and is prevented from entering the camera 4A. In addition, the incidence of light guided through the translucent cover 12 by the sheet portion 121 provided on the translucent cover 12 is also prevented. Further, the heat generated when the lamp units 2 and 3 are lit is shielded by the hood 42A and the heat sink 45, and is radiated to prevent the camera 4A from being affected by heat. Further, heat generated by the camera 4A, particularly the image pickup device, can be dissipated by the hood 42A or the heat sink 45 to exert a cooling effect, thereby preventing thermal damage in the image pickup device.

(Embodiment 2)
FIG. 8 is a cross-sectional view of the headlamp of the second embodiment and corresponds to FIG. 4 of the first embodiment. In the second embodiment, the light derivation unit provided in the translucent cover 12 is configured so that the light guided through the translucent cover 12 is outside the translucent cover 12 before being guided to the region facing the hood 42. It is set as the structure made to derive to. As this light derivation | leading-out part, the square area | region facing the hood 42 of the translucent cover 12 is comprised here as the convex-shaped part 122 which protruded toward the lamp front.

  The convex portion 122 as the light derivation portion has a peripheral wall 122a having a square frame shape. For convenience, the corner on the lamp rear side of the peripheral wall 122a is referred to as a first bent portion b1, and the corner on the lamp front side is referred to as a second bent portion b2. These first and second bent portions b1 and b2 are formed in a cross-sectional shape having a predetermined radius of curvature. Here, the translucent cover 12 is formed of polycarbonate having a plate thickness of 3 mm, and the curvature radii of both bent portions b1 and b2 are formed to be 1 mm or less.

  The hood 42 is disposed in a state where a front end portion thereof is inserted into a region on the inner surface side of the convex portion 122. That is, the front end portion 42a of the hood 42 is positioned in front of the first bent portion b1. Further, the front end portion 42 a is disposed in a state where it is positioned on the inner side of the second bent portion b <b> 2 by substantially the thickness of the translucent cover 12.

  According to this configuration, the light emitted from each of the lamp units 2 and 3 is incident on the translucent cover 12 and guided to the area of the translucent cover 12 that faces the hood 42. FIG. 9 is an enlarged view of a part of the convex portion 122. As shown by an arrow line in FIG. 9A, the guided light L3 is projected on the inner surface at the first bent portion b1, Since the radius of curvature of the first bent portion b1 is small, the incident angle at the time of internal reflection becomes smaller than the critical angle at the light guide cover 12, and the reflected light is immediately led out from the inner surface of the translucent cover 12. . Therefore, the derived light L3 is projected on the outer surface of the hood 42 and is not incident on the inside of the hood 42.

  The light L4 that has not been led out at the first bent portion b1 is guided through the peripheral wall 122a and projected onto the inner surface at the second bent portion b2. Since the radius of curvature is also small in the second bent portion b2, the incident angle becomes smaller than the critical angle and is led out from the outer surface of the translucent cover 12. Accordingly, the derived light L4 is emitted toward the front of the lamp and is not incident on the inside of the hood 42.

  Here, as shown in FIG. 9B, when the curvature radii of the first and second bent portions b1 and b2 are 3 mm or more, the incident angle upon internal reflection is critical in these bent portions b1 and b2. It is larger than the corner and is guided through the translucent cover 12. Therefore, the light L5 guided through the first bent portion b1 and the second bent portion b2 is led out from the region facing the hood and is incident on the hood 42.

  As shown in FIG. 9A, if the radius of curvature of each of the bent portions b1 and b2 is about 1 mm, it is difficult to remove the mold when the translucent cover 12 is resin-molded. Therefore, considering the total reflection of light at each of the bent portions b1 and b2 and the ease of manufacturing the translucent cover 12, the radius of curvature of each of the bent portions b1 and b2 is preferably set in the range of 1 to 3 mm.

  In the second embodiment, if the front end portion 42a of the hood 42 can be inserted into the convex portion 122 serving as the light outlet portion, the convex portion 122 when viewed from the front side of the lamp is used. The shape can be designed arbitrarily. For example, as shown in FIG. 10A, a roof shape may be used in which the upper side of the peripheral wall 122a of the convex portion 122 is an upward triangle or an acute angle. Alternatively, it may be oval or circular as shown in FIG. By doing so, water droplets such as rainwater adhering to the outer surface of the translucent cover 12 do not collect on the upper side of the peripheral wall 122a of the convex portion 122, and the light derivation effect at the convex portion 122 as the light derivation portion. Can be increased.

(Embodiment 3)
FIG. 11 is a cross-sectional view of the light lead-out part of the third embodiment, and corresponds to FIG. 4 of the first embodiment. In the third embodiment, the light derivation unit provided in the translucent cover 12 is configured so that the light guided through the translucent cover 12 is guided by the translucent cover 12 before the light is guided to the region facing the hood 42. This is a modification of the second embodiment in that it is configured to be derived to the outside.

  In the third embodiment, in the translucent cover 12, the outer region surrounding the front end portion 42 a of the hood 42, that is, the outer peripheral region of the region where the hood 42 is opposed, in particular, the emitted light of each lamp unit 2, 3 is guided. An optical step 123 is formed in the incoming region. The optical step 123 is composed of minute irregularities formed on the inner surface of the translucent cover 12. For example, it is a dot-like or linear cut with a triangular cross section formed on the inner surface of the translucent cover 12. Alternatively, a moth-eye structure may be used.

  By providing the light deriving unit including the optical step 123, the light guided through the light guide cover 12 is internally reflected in the optical step 123 and emitted from the outer surface of the light transmitting cover 12. As a result, the guided light is not guided to the area where the hood 42 is opposed, and is prevented from entering the hood 42.

  Although illustration is omitted, a light absorption film may be formed on the inner surface of the translucent cover 12 in place of the optical step or the moth-eye structure. The light absorbing film may be a film coated with a light absorbing material or a film having a light absorbing sheet attached thereto. The light guided through the translucent cover 12 is absorbed by the light absorption film and is not guided to the area where the hood 42 is opposed, and is prevented from entering the hood 42. .

  Even if the light guide portion by the optical step, the moth-eye structure, the light absorption film, or the like is provided in the region surrounding the hood 42 of the translucent cover 12 as described above, the headlamp formed by the emitted light of the lamp units 2 and 3 is used. Little impact on light distribution.

(Embodiment 4)
FIG. 12 is a cross-sectional view of the light lead-out portion of the fourth embodiment. In the fourth embodiment, in the translucent cover 12, the region facing the hood 42 is formed of a different material 124 different from other regions. For example, when the translucent cover 12 is manufactured by resin molding, the region where the hood 42 is opposed is formed of a heterogeneous material 124 having a lower light refractive index than other regions by a technique such as two-color molding. The foreign material 124 may be formed in a frame shape or a line shape in a region along the front end portion 42 a of the hood, that is, a region surrounding the hood 42.

  In the fourth embodiment, the light guided inside the translucent cover 12 is internally reflected at the interface with the foreign material 124 and is emitted to the outside of the translucent cover 12. As a result, the light is not guided to the area where the hood 42 is opposed, and the emitted light is emitted toward the outside of the hood 42, so that it is prevented from entering the hood 42. The Since the foreign material 124 is disposed in the region facing the hood 42, there is no influence on the light distribution of the emitted light from the lamp units 2 and 3.

  In this embodiment, the heterogeneous material 124 may be formed of a material having low light transmittance. In this case, the light guided through the translucent cover 12 is attenuated when the foreign material 124 is guided. Therefore, when the light is guided to the area facing the hood 42, the light is dimmed to such an extent that it does not affect the camera 4, and no problem occurs even if it enters the hood 42.

(Embodiment 5)
FIG. 13 is an external perspective view of Embodiment 5 in which the form of the hood and camera is changed. The fifth embodiment includes any of the light derivation units of the first to fourth embodiments described above, and the camera and the hood are configured as a model tank T. That is, the camera 4 constitutes a tank chassis or turret, and the lens barrel 41 and the hood 42 constitute a gun barrel. A tank T of this model is disposed in the lamp housing 1 and fixedly supported on the lamp body 11 with the front end portion of the cannon, that is, the front end portion of the hood being in close proximity to or in contact with the inner surface of the translucent cover 12. . The tank T is observed from the outside through the translucent cover 12.

  Therefore, in the camera 4 simulating the tank T, the light guided through the translucent cover 12 is incident on the inside of the gun barrel, that is, the hood 42 by the light deriving unit of the first to fourth embodiments. This prevents the camera 4 from white-out.

  FIG. 14 is a front view of another embodiment of the fifth embodiment. Here, as in the first embodiment, the camera 4 is arranged on the rear surface side of the extension 13, while a pattern such as a character or the like, here a dragon D pattern is drawn on the extension 13, and the position corresponding to the mouth of the dragon D An elliptical cylinder-shaped hood 42 is disposed on the top. Or although illustration is abbreviate | omitted, the pattern of a petal etc. may be drawn on the whole surface of an extension, and the lens barrel and hood of a camera may be arrange | positioned by providing an opening window in one of the patterns.

  Also in this embodiment, the light guided portion of Embodiments 1 to 4 is provided in the region facing the hood 42 of the translucent cover 12, so that the light guided through the translucent cover 12 is inside the hood 42. Is prevented from entering. Moreover, in each form of these Embodiment 5, since a part of the design of a headlamp is comprised with a camera and a hood, and these are observed from the exterior through a translucent cover, the design property of a headlamp is improved. Can do.

  The light derivation unit according to the present invention is not limited to the configuration described in the first to fourth embodiments. The light emitted from the lamp unit incorporated in the lamp housing is prevented from entering the image pickup means by the hood, and the light guided through the translucent cover enters the image pickup means from the inside of the hood. It goes without saying that appropriate modifications are possible as long as the configuration can prevent this.

  In addition, providing the hood with heat dissipation can also be applied to the configurations of the first to third to fourth embodiments, and can protect the camera from heat damage.

  The vehicle lamp of the present invention is not limited to a headlamp, and in a lamp in which a lamp unit and a camera are arranged in a lamp housing, it is required to prevent light emitted from the lamp unit from entering the camera. Applicable to lamps made.

DESCRIPTION OF SYMBOLS 1 Lamp housing 2 Main lamp unit 3 Sub lamp unit 4, 4A Camera (imaging means)
5 Lamp ECU
6 Vehicle ECU
7 Monitor 11 Lamp body 12 Translucent cover 41 Lens barrel 42 Hood 51 Main lamp control unit 52 Sub lamp control unit 53 Camera control unit 121 Seat unit (light derivation unit)
122 Convex part (light derivation part)
123 Optical step (light derivation unit)
124 Heterogeneous material (light extraction part)
L-HL, R-HL headlamp

Claims (7)

  A lamp for a vehicle in which a lamp unit and an image pickup means are disposed in a lamp housing having a translucent cover, and a hood for preventing light emitted from the lamp unit from entering the image pickup means. The vehicle lamp is characterized in that a light deriving portion for deriving the light guided inside toward the outside of the hood is provided in a partial region of the translucent cover.   The light derivation portion is a seat portion having a plane in which a region facing the hood of the translucent cover protrudes toward the rear of the lamp, and a front end portion of the hood is close to or in contact with the plane of the seat portion. The vehicle lamp according to claim 1.   The said light derivation | leading-out part is a convex part which protruded the area | region facing the said hood of the said translucent cover ahead of a lamp | ramp, The front-end part of the said hood is arrange | positioned inside the said convex part. Vehicle lamps.   The vehicular lamp according to claim 1, wherein the light derivation unit includes an optical step provided in at least a part of a region surrounding the region facing the hood of the translucent cover.   2. The vehicle lamp according to claim 1, wherein the light guide portion is formed of a foreign material provided in at least a part of a region facing the hood of the translucent cover or a region surrounding the region.   The vehicular lamp according to claim 1, wherein the hood has a heat dissipation function. The vehicular lamp according to claim 1, wherein the imaging unit is configured in a designable form and is arranged so as to be observable through the translucent cover.

Images