WO2022019231A1 - Dispositif de projection d'image - Google Patents

Dispositif de projection d'image Download PDF

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Publication number
WO2022019231A1
WO2022019231A1 PCT/JP2021/026800 JP2021026800W WO2022019231A1 WO 2022019231 A1 WO2022019231 A1 WO 2022019231A1 JP 2021026800 W JP2021026800 W JP 2021026800W WO 2022019231 A1 WO2022019231 A1 WO 2022019231A1
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WO
WIPO (PCT)
Prior art keywords
projection device
image
image projection
light
light sources
Prior art date
Application number
PCT/JP2021/026800
Other languages
English (en)
Japanese (ja)
Inventor
賢 渡邉
進 金子
Original Assignee
株式会社小糸製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社小糸製作所 filed Critical 株式会社小糸製作所
Priority to JP2022537977A priority Critical patent/JPWO2022019231A1/ja
Publication of WO2022019231A1 publication Critical patent/WO2022019231A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/50—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/22—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments for reverse drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/34—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating change of drive direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/15—Strips of light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/27—Attachment thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/50—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/08—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures
    • F21V11/12—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures of slot type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2400/00—Special features or arrangements of exterior signal lamps for vehicles
    • B60Q2400/50—Projected symbol or information, e.g. onto the road or car body
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F21W2103/20—Direction indicator lights
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F21W2103/45—Reversing lights
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F21W2103/60—Projection of signs from lighting devices, e.g. symbols or information being projected onto the road
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2105/00—Combinations of lighting devices covered by codes F21W2102/00 – F21W2104/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to an image projection device for a vehicle that projects a predetermined image on a road surface.
  • Patent Document 1 proposes an invention of a start notification display device that draws a start notification display having a predetermined shape on a road surface in a vehicle traveling direction with light and allows a pedestrian or the like to accurately grasp the start timing of the vehicle. ing.
  • the illuminance (brightness) of the image decreases as the projection position moves away from the vehicle, and the image looks darker. For this reason, for example, when a plurality of images are projected using a plurality of light sources having the same luminous flux, there is a problem that the brightness of the projected image varies.
  • a first object of the present invention is to provide an image projection device capable of suppressing variation in brightness of a plurality of images projected by using a plurality of light sources.
  • various vehicle lighting equipment such as headlights, backup lamps, and turn signal lamps are installed in the vehicle.
  • these vehicle lighting fixtures also have a function of displaying the driving status of the own vehicle to surrounding vehicles and pedestrians and calling attention to them. For this reason, there has been a demand for coordinating the lighting fixtures for vehicles and the image projection device to perform more appropriate display toward the outside of the vehicle.
  • a second object of the present invention is to provide an image projection device capable of coordinating with other vehicle lamps and performing a more appropriate display toward the outside of the vehicle.
  • the light is projected from diagonally upward toward the road surface, so that the width is extended as the distance from the vehicle body increases, and there is a problem that the desired image is not drawn.
  • a third object of the present invention is to provide an image projection device capable of projecting a portion of the projected image close to the vehicle body and a portion away from the vehicle body into a well-balanced shape.
  • the image projection device of the present invention is an image projection device for a vehicle, and includes a plurality of light sources and a plurality of lenses facing each other of the plurality of light sources.
  • Each of the lenses has a different diameter, and a lens having a large diameter projects an image at a position farther from an image projection device than a lens having a small diameter.
  • the plurality of light sources are provided so as to emit light of the same luminous flux, and the plurality of lenses are provided with their respective diameters so as to project an image having the same illuminance.
  • the plurality of lenses may be provided so that the optical axis of the light passing through at least one lens is not parallel to the optical axis of the light passing through the other lens.
  • the lens may be attached in a posture that tilts toward the side of the vehicle.
  • a plurality of light sources may be arranged side by side on the left and right, and the light emitted by the plurality of light sources may be configured to project an image that is inclined and extended toward the side of the vehicle.
  • a plurality of light sources may be arranged side by side, and the light emitted by the plurality of light sources may be configured to project an image extending in the vehicle length direction.
  • the image projection device of the present invention is an image projection device for a vehicle capable of projecting a plurality of images on a road surface at a time, and emits light for projecting a plurality of images.
  • a plurality of light sources to be irradiated and a control means for controlling the light source are provided, and the control means is characterized in that the light source is turned on and off so as to be linked with the on and off of other lighting fixtures for vehicles.
  • the control means can also turn on a plurality of light sources sequentially.
  • Backup lamps and turn signal lamps can be used for other vehicle lighting fixtures.
  • the image projection device of the present invention is juxtaposed with other vehicle lamps, and the emitted light from the light source is visually recognized as one with the emitted light from the other vehicle lamps.
  • the light source and the image drawn by the light from the light source may be configured to be arranged in a straight line in a plan view.
  • the image projection device of the present invention is an image projection device for a vehicle, and is a plurality of light sources, a plurality of lenses facing the plurality of light sources, and a light source and a lens. It is provided with a plate-shaped shade interposed between them, and the shade is provided with a plurality of openings through which the light of a plurality of light sources is directed toward a plurality of lenses, and the openings are provided in a trapezoidal shape. It is a feature.
  • the opening is provided in a trapezoidal shape in which the lower base is shorter than the upper bottom and is arranged in series.
  • Multiple openings can be provided in different sizes.
  • a lens having a large diameter is configured to project an image at a position farther from the image projection device than a lens having a smaller diameter, and the illuminance of the image is increased as the distance from the image projection device increases. Because it is configured in, it has the effect of suppressing the variation in brightness of the projected image.
  • the lighting is controlled in conjunction with other vehicle lighting equipment, it is possible to more clearly convey the message displayed by the vehicle lighting equipment to the outside of the vehicle. ..
  • a shade is interposed between the light source and the lens, the shade is provided with an opening through which the light of the light source passes, and the opening is provided in a trapezoidal shape.
  • FIG. 1 It is a schematic diagram of the image projection apparatus of Example 1 of this invention. It is a schematic disassembled perspective view of the image projection apparatus of FIG. It is a schematic diagram which shows the positional relationship between the image projection device of FIG. 1 and an obstacle, and the light distribution state. It is a schematic diagram which shows the appearance that the image projection apparatus of FIG. 1 is arranged side by side with a backup lamp. It is a schematic diagram which shows the image projected by the image projection apparatus of FIG. It is a schematic diagram which shows the appearance which the image projection apparatus by a modification is provided in the lighting room of a headlight.
  • 6A is a schematic cross-sectional view taken along the line AA showing the arrangement and orientation of the lens of the image projection device of FIG. 6, and FIG.
  • 6B is a schematic view showing the tilted state of the lens. It is a schematic diagram which shows the image projected by the image projection apparatus of FIG. It is a schematic diagram of the image projection apparatus of Example 2 of this invention. It is a schematic disassembled perspective view of an image projection device. It is a schematic diagram which shows the projection state on the road surface of an image projection apparatus. It is a schematic diagram which shows the arrangement state of an image projection apparatus. It is a schematic diagram which shows the image projected by the image projection apparatus arranged side by side with a backup lamp. It is a schematic diagram which shows the image projected by the image projection apparatus. (A) In the case of a side turn signal lamp, (b) in the case of a headlight.
  • FIG. 15 is a schematic view of (a) seen from above and (b) a schematic view seen from the side, showing the optical axis, the luminous flux, and the projected image by the image projection device of FIG. It is a schematic diagram of (a) AA sectional view, and (b) the shade seen from the front direction of the apparatus when the focal point is arranged in a lens.
  • FIG. 18 is a schematic view showing (a) a projected image by a rectangular opening and (b) a projected image by a trapezoidal opening in the case of FIG. 18.
  • FIG. 20 is a schematic view showing (a) a projected image by a rectangular opening and (b) a projected image by a trapezoidal opening in the case of FIG. 20.
  • FIG. 3 is a schematic plan view showing the image projection device and the projected image of FIG. It is a schematic diagram which shows the appearance which the image projection apparatus by a modification is provided in the lighting room of a headlight.
  • FIG. 23 is a schematic view of a BB cross section of a lens portion, and (b) a schematic view of the tilted state of each lens as viewed from the side, showing the arrangement and lens orientation of the lenses of the image projection device of FIG. 23.
  • 23 is a schematic view of the shade of the image projection device of FIG. 23 as viewed from the front direction of the device, and (b) an enlarged view of an opening.
  • FIG. 3 is a schematic plan view showing the image projection device and the projected image of FIG. 23.
  • the image projection device 1 shown in FIGS. 1 and 2 includes a plurality of light sources 2 (2c, 2b, 2a) that irradiate light L (Lc, Lb, Lc () that projects an image G (Gc, Gb, Ga).
  • a plurality of lenses 4 (4c, 4b, 4a) facing each of the plurality of light sources 2 are provided.
  • the image projection device 1 cuts out the substrate 7 on which the light source 2 is mounted, the attachment 5 for attaching the shade 3 to the substrate 7, and the light L from the light source 2 into a shape corresponding to the image G. It is composed of a shade 3, a lens 4 that transmits light L from a light source 2, and an extension 6 that shields the internal structure of the image projection device 1 from the outside of the vehicle.
  • the light sources 2c, 2b, and 2c are LEDs having the same luminous flux, that is, LEDs having the same current value and having the same brightness, and are provided side by side.
  • the light source 2 is provided so that the light Lc, Lb, Lc emitted from the light sources 2c, 2b, 2c descends while inclining toward the road surface.
  • images Gc, Gb, and Gc extending in the vehicle length direction can be projected on the road surface.
  • the light source 2 is arranged on the same straight line as the image G drawn by the light L from the light source 2 (see FIGS. 5 and 8).
  • a vehicle lamp for example, a backup lamp 52
  • a backup lamp 52 arranged side by side with the light source 2 may be included so as to be arranged in line with the light source 2 and the image G.
  • the shade 3 is provided with a trapezoidal opening 31 having an upper base 32 that is longer than the lower base 33.
  • the shape of the projected image G can be adjusted. For example, it is possible to provide the opening 31 in a rectangular shape and project a trapezoidal image G that becomes wider as the distance from the vehicle body 51 increases.
  • the shape and the area of the opening 31 are all provided to be the same. By providing the same area and shape of the opening 31, the structure of the shade 3 can be simplified and the manufacturing cost can be suppressed.
  • the plurality of lenses 4 (4c, 4b, 4a) are integrally formed, and are configured to pass a plurality of light Lc, Lb, Lc (each from a plurality of light sources 2c, 2b, 2c).
  • Each of the 4c, 4b, and 4a has a different diameter r (diameter rc ⁇ diameter rb ⁇ diameter ra), and the lenses 4c, 4b, and 4a are provided so that the diameter r becomes larger as it goes downward.
  • the 4a are arranged so as to be separated from each other by increasing the diameter r so as not to overlap each other. Further, the lens 4 is positioned from the light source 2 according to its own focal distance.
  • the lens 2 having a large diameter r is provided so as to project the image G at a position farther from the vehicle body 51 than the lens 2 having a small diameter r.
  • the lens 4b has a larger diameter r than the lens 4c (diameter rb> diameter rc), and the image Gb projected by the lens 4b is drawn at a position farther from the vehicle body 51 than the image Gc projected by the lens 4c.
  • the lens Since the luminous flux passing through the lens 4b having a large diameter r is larger than the luminous flux passing through the lens 4c having a small diameter r, the image Gb farther from the vehicle body 51 is projected to the same illuminance as the image Gc closer to the vehicle body 51. can.
  • the lens 4 is provided so that the optical axes of the light Lc, Lb, and Lc that have passed through the lenses 4c, 4b, and 4a are non-parallel to each other.
  • the optical axes of the light Lc, Lb, and Lc intersect in the side view, and the light source 2c arranged on the upper side, the light source 2b arranged in the middle, and the light source 2a arranged on the lower side in this order move away from the vicinity of the vehicle body 51.
  • Images Gc, Gb, and Ga are projected onto the image.
  • the inclination of the lens 4 is provided so as to be larger as the lens 4 projects closer to the vehicle projection device 1 or the vehicle body 51.
  • the lens 4 By providing the lens 4 in this way, it is possible to project the images Gc, Gb, and Ga while avoiding obstacles such as the bumper 53 as shown in FIG. 3A.
  • the lens 4a, the lens 4b, and the lens 4c are arranged in this order from the upper side to the lower side as shown in FIG. 3 (b). You can also choose to do it.
  • the image projection device 1 is arranged in parallel with the backup lamp 52 so that the emitted light L from the light source 2 can be visually recognized as one with the light L'from the backup lamp 52. ..
  • the distance d between the light source 2 and the light source 2'of the backup lamp 52 is 75 mm or less so that the emitted lights L and L'are visually recognized as one.
  • FIG. 5 shows how the image projection device 1 having the above configuration is turned on.
  • the images Gc, Gb, and Ga are drawn on a straight line A in which the optical axis of the light L emitted from the light source 2 is projected onto the road surface.
  • the image Ga projected at a position away from the vehicle body 51 extends in the vehicle length direction and becomes longer (Dc ⁇ Db ⁇ Da) than the image Gc projected at a position close to the vehicle body 51.
  • the image Ga projected at a position away from the vehicle body 51 is wider in the vehicle width direction (Wc ⁇ Wb ⁇ Wa) than the image Gc projected at a position close to the vehicle body 51.
  • Wc ⁇ Wb ⁇ Wa vehicle width direction
  • the suitable projection distance D in the vehicle length direction of the image G differs depending on the mounting position of the image projection device 1.
  • the projection distance D is 2.5 m.
  • the length D of the image G in the vehicle length direction increases (Dc ⁇ Db ⁇ Da), and the length W in the vehicle width direction also increases (Wc ⁇ Wb ⁇ Wa) toward Gc, Gb, and Ga. is doing.
  • the image projection device 1 can be installed in parallel with vehicle lighting equipment other than the backup lamp 52, for example, a headlight 54, a side turn signal lamp, or the like, or can be provided in the lighting chamber of the vehicle lighting equipment.
  • vehicle lighting equipment other than the backup lamp 52 for example, a headlight 54, a side turn signal lamp, or the like
  • a headlight 54 can be provided in the lighting chamber of the vehicle lighting equipment.
  • the headlight 54 is provided in the lighting chamber is shown. Even in this case, it is desirable that the distance d between the light source 2 ′′ of the headlight 54 and the light source 2 is 75 mm or less.
  • the lenses 4 are provided side by side in the horizontal direction.
  • the lenses 4c, 4b, and 4a each have a different diameter r (diameter rc ⁇ diameter rb ⁇ diameter ra), and are provided so that the diameter r increases inward (on the axle side).
  • the lens 4 is attached in such a posture that the entire lens 4 is inclined toward the side of the vehicle body.
  • the tilt angle ⁇ 2 of the image G toward the vehicle body can be changed.
  • the lens 4 is provided so that the optical axes of the light Lc, Lb, Lc passing through the lenses 4c, 4b, 4a intersect in a plan view. Further, as shown in FIG. 7B, the lens 4 projects the image Gc closer to the vehicle body 51 as the lens 4c has a smaller diameter, and projects the image Ga farther from the vehicle body 51 as the lens 4a has a larger diameter. , The vertical tilt is adjusted.
  • FIG. 8 shows how the image projection device 1 of the modified example is turned on.
  • the images Gc, Gb, and Ga are drawn on a straight line A in which the optical axis of the light L emitted from the light source 2 is projected onto the road surface.
  • the image Ga projected at a position away from the vehicle body 51 is longer and longer in the vehicle length direction than the image Gc projected at a position close to the vehicle body 51.
  • the image Ga projected at a position away from the vehicle body 51 is wider in the vehicle width direction than the image Gc projected at a position close to the vehicle body 51.
  • a plurality of lenses 4c, 4b, 4a are provided so as to have different diameters rc, rb, ra, for example, a lens 4b having a large diameter r has a diameter r. Since the image Gb is configured to be projected at a position farther from the image projection device 1 than the small lens 4c, the same is true even when the light sources 2c, 2b, 2c having the same luminous flux are used, regardless of the distance from the vehicle 51.
  • the images Gc, Gb, and Gc can be projected with a degree of illuminance, and the variation in brightness of the image G can be suppressed.
  • the lenses 4c, 4b, 4a can adjust the focus of each image G to be projected, and can project clear images Gc, Gb, Ga. Further, since the lenses 4c, 4b, and 4a are integrally provided, the image projection device 1 can be manufactured with a small number of parts, and the labor and cost can be reduced.
  • the image projection device 1 shown in FIGS. 9 to 11 includes a plurality of light sources 2 (2a to 2c) that irradiate the light L that projects the image G, and a control system 11 that controls the light source 2.
  • the control system 11 includes a point-off control circuit 13 that turns on, turns off, and sequentially turns on the light source 2, and an ECU 12 that controls the point-off control circuit 13.
  • the ECU 12 receives a control signal from the control system 21 of the backup lamp 52, and controls the turn-off control circuit 13 so as to interlock with the turn-off of the backup lamp 52.
  • sequential lighting means that the light source 2 is turned on in the order of the light source 2c, the light source 2b, and the light source 2a at a predetermined time interval, then turned off once, and the light source 2 is turned on again at a predetermined time interval.
  • a control of repeating lighting of the light source 2c, the light source 2b, and the light source 2a in this order is shown.
  • sequential lighting when the light source 2 is turned on in the order of the light source 2c, the light source 2b, and the light source 2a, the image Gc, the image Gb, and the image Ga are projected onto the road surface R in this order from the image G close to the vehicle body 51.
  • the image projection device 1 cuts out the substrate 7 on which the light source 2 is mounted, the attachment 5 for attaching the shade 3 to the substrate 7, and the light L from the light source 2 into a shape corresponding to the image G. It is composed of a shade 3, a lens 4 that transmits light L from a light source 2, and an extension 6 that shields the internal structure of the image projection device 1 from the outside of the vehicle.
  • the light sources 2a to 2c are LEDs having the same current value and the same brightness, and are provided side by side one above the other. By arranging the light sources 2 vertically, there is an advantage that the optical design of the lens can be simplified as compared with the case where the light sources 2 are arranged side by side.
  • the light source 2 is provided so that the lights La to Lc emitted from the light sources 2a to 2c are inclined from the diagonally upward direction toward the road surface R. By arranging in this way, images Ga to Gc extending in the vehicle length direction are projected on the road surface.
  • the light sources 2a to 2c are arranged in a straight line with the image drawn by the light from the light source 2 in a plan view.
  • a vehicle lamp for example, a backup lamp 52
  • a backup lamp 52 arranged side by side with the light source 2 may be included so as to be arranged in line with the light source 2 and the image G.
  • the shade 3 is provided with a trapezoidal opening 31 having an upper base 32 that is longer than the lower base 33.
  • the shape of the projected image G can be adjusted. For example, it is possible to provide the opening 31 in a rectangular shape and project a trapezoidal image G that becomes wider as the distance from the vehicle increases.
  • the shape and area of the opening 31 are all the same. By providing the same area and shape of the opening 31, the structure of the shade 3 can be simplified and the manufacturing cost can be suppressed.
  • the plurality of lenses 4 (4a to 4c) are integrally formed, and are configured to transmit a plurality of lights L1 to L3 from the plurality of light sources 2a to 2c. Further, the lenses 4a to 4c have different diameters, and are provided so that the diameter becomes smaller toward the lower side. At this time, the lenses 4 are arranged so that the distance between the lenses 4 increases as the diameter increases so as not to overlap each other. Further, the position of the lens 4 from the light source 2 is determined according to its own focal length.
  • the inclination of the lens 4 is adjusted so that the light L passing through the lens 2 having a large diameter projects the image G farther than the lens 2 having a small diameter.
  • the inclination of the lens 4 is set so as to be larger as the lens 4 projects closer to the vehicle projection device 1 or the vehicle body 51.
  • the light flux passing through the lens 2 having a large diameter is larger than the light flux passing through the lens 2 having a small diameter, so that the image G can be projected to the same illuminance regardless of the distance from the vehicle body 51.
  • the image projection device 1 is arranged under the bumper 53. Since the light L from the image projection device 1 is brighter than other vehicle lamps, glare is likely to occur. By arranging it under the bumper, the effect of suppressing glare can be expected. Further, the image projection device 1 is provided in parallel with the backup lamp 52 so that the light L emitted from the light source 2 can be visually recognized together with the light L'from the backup lamp 52. In particular, it is desirable that the distance d between the light source 2 and the light source 2'of the backup lamp 52 is 75 mm or less so that the emitted lights L and L'are visually recognized as one.
  • FIG. 13 shows the image projection device 1 having the above configuration turned on.
  • the images Ga to Gc are drawn on a straight line A in which the optical axes of the light sources 2a to 2c are projected onto the road surface R.
  • the image G projected at a position away from the vehicle body 51 is longer (Da> Db> Dc) in the vehicle length direction than the image G projected at a position closer to the vehicle body 51.
  • the image G projected at a position away from the vehicle body 51 is wider in the vehicle width direction (Wa> Wb> Wc) than the image G projected at a position close to the vehicle body 51.
  • the image projection device 1 can also be installed in parallel with vehicle lighting equipment other than the backup lamp 52, for example, a headlight or a side turn signal lamp.
  • FIG. 14A is a diagram schematically showing an image G projected when the side turn signal lamps are arranged side by side
  • FIG. 14B is a diagram schematically showing the image G projected when the side turn signal lamps are arranged side by side.
  • the image G is projected inside the vehicle width.
  • the side turn signal lamps are arranged side by side, the image G is projected so as to expand to the left and right as the distance from the vehicle body 51 increases.
  • the suitable projection distance D in the vehicle length direction of the image G differs depending on the mounting position of the image projection device 1.
  • the projection distance D is 2.5 m.
  • the control system 21 of the backup lamp 52 controls to turn on the backup lamp 52.
  • the ECU 22 of the backup lamp 52 transmits a control signal to the control system 11 of the image projection device 1.
  • the ECU 12 of the control system 11 lights all the light sources 2a to 2c of the image projection device 1.
  • the ECU 12 lights the light source 2c, the light source 2b, and the light source 2a in this order.
  • the light source 2 light source 2c in the case of sequential lighting
  • the image G is projected in conjunction with other vehicle lighting equipment such as the backup lamp 52, the message that the vehicle is moving backward can be more clearly transmitted to the outside of the vehicle. Further, since the area and shape of the opening 31 of the shade 3 forming the image G are provided to be the same, the structure of the shade 3 can be simplified and the manufacturing cost can be suppressed. Further, since a plurality of images Ga to Gc can be projected at one time or sequentially using one shade 3 and one lens 4, the number of parts can be reduced and the cost can be reduced.
  • Example 3 in which the present invention is embodied in an image projection device will be described with reference to the drawings.
  • the image projection device 1 shown in FIGS. 15 and 16 is attached to the vicinity of the backup lamp 52, and is a plurality of light sources 2 (2a to 2c) that irradiate light L (La to Lc) that projects images G (Ga to Gc).
  • a plurality of lenses 4 (4a to 4c) facing each of the plurality of light sources 2 and a shade 3 interposed between the light source 2 and the lenses 4 are provided.
  • the image projection device 1 has a substrate 7 on which the light source 2 is mounted, an attachment 5 for attaching the shade 3 to the substrate 7, and a flat plate shape that cuts out the light L from the light source 2 into a predetermined shape. It is composed of a shade 3, a lens 4 that transmits light L from a light source 2, and an extension 6 that shields the internal structure of the image projection device 1 from the outside of the vehicle.
  • the light sources 2a to 2c are LEDs having the same luminous flux, that is, LEDs having the same current value and having the same brightness, and are provided side by side.
  • the plurality of lenses 4 (4a to 4c) are integrally formed, and are configured to transmit a plurality of light La to Lc from the plurality of light sources 2a to 2c. Further, the lenses 4a to 4c have different diameters, and are provided so that the diameter becomes smaller toward the lower side. At this time, the lenses 4 are arranged so that the distance between the lenses 4 increases as the diameter increases so as not to overlap each other. Further, the position of the lens 4 from the light source 2 is determined according to its own focal length.
  • the inclination of the lens 4 is adjusted so that the light L passing through the lens 2 having a large diameter projects the image G farther than the lens 2 having a small diameter.
  • the inclination of the lens 4 is set so as to be larger as the lens 4 projects closer to the vehicle projection device 1 or the vehicle body 51.
  • the light flux passing through the lens 2 having a large diameter is larger than the light flux passing through the lens 2 having a small diameter, so that the image G can be projected to the same illuminance regardless of the distance from the vehicle body 51.
  • the vehicle projection device 1 is provided so that the light L emitted from the light sources 2a to 2c descends while inclining toward the road surface R.
  • images Ga to Gc extending in the vehicle length direction are projected on the road surface R.
  • the light source 2 is arranged on the same straight line A as the image G drawn by the light L from the light source 2.
  • a vehicle lamp for example, a backup lamp 52
  • arranged side by side with the light source 2 may be included so as to be arranged in line with the light source 2 and the image G.
  • the openings 31 are arranged in series along the longitudinal direction of the shade 3.
  • the size of the opening 31 is provided according to the size of the LED chip which is the light source 2.
  • the height h of the opening 31 is preferably about 0.9 mm.
  • the distances k1 and k2 between the openings 31 are provided so as to be different from each other according to the size and inclination of the lens 4, respectively.
  • FIG. 19A shows an image G'projected when a rectangular opening 31'is provided when the focal point F is in the lens
  • FIG. 19B shows the focal point F in the lens.
  • the image G projected when the lower bottom 33 is provided with the trapezoidal opening 31 whose lower bottom 33 is shorter than the upper bottom 32 is represented.
  • FIG. 19 (b) as compared with FIG. 19 (a), the extension of the side G2 far from the vehicle body 51 is suppressed (G2'> G2), and the band-shaped image G extending in the vehicle length direction is projected.
  • the image projection device 1 may be configured so that the light passing through the opening 31 of the shade 3 travels straight inside the lens 4. At this time, the focal point F is not arranged in the lens. In this case, the light L passing near the upper bottom 32 of the opening 31 is projected near the side G2 far from the vehicle body 51, and the light L passing near the lower bottom 33 is projected near the side G1 near the vehicle body 51. (See FIG. 21).
  • FIG. 21 (a) shows an image G'projected when a rectangular opening 31'is provided when there is no focal point F in the lens
  • FIG. 21 (b) shows a focal point F in the lens.
  • the extension of the side G2 far from the vehicle body 51 is suppressed (G2'> G2), and the band-shaped image G extending in the vehicle length direction is projected.
  • FIG. 22 shows how the image projection device 1 having the above configuration is turned on.
  • the images Ga to Gc are drawn on a straight line A in which the optical axis of the light L emitted from the light source 2 is projected onto the road surface R.
  • the image Ga projected at a position away from the vehicle body 51 is longer and longer in the vehicle length direction than the image Gc projected at a position close to the vehicle body 51.
  • the image Ga projected at a position away from the vehicle body 51 is wider in the vehicle width direction than the image Gc projected at a position close to the vehicle body 51.
  • the suitable projection distance D in the vehicle length direction of the image G differs depending on the mounting position of the image projection device 1.
  • the projection distance D is 2.5 m.
  • the length D of the image G in the vehicle length direction increases (Dc ⁇ Db ⁇ Da), and the length W in the vehicle width direction also increases (Wc ⁇ Wb ⁇ Wa) toward Gc, Gb, and Ga. is doing.
  • the image projection device 1 can be installed in parallel with vehicle lighting equipment other than the backup lamp 52, for example, a headlight 54, a side turn signal lamp, or the like, or can be provided in the lighting chamber of the vehicle lighting equipment.
  • vehicle lighting equipment other than the backup lamp 52 for example, a headlight 54, a side turn signal lamp, or the like
  • a headlight 54 for example, a side turn signal lamp, or the like
  • the headlight 54 is provided in the lighting chamber is shown.
  • the lenses 4 are provided side by side in the horizontal direction.
  • the lenses 4a to 4c have different diameters, and are provided so that the diameter increases toward the inside (axle side). Further, the lens 4 is attached in such a posture that the entire lens 4 is inclined toward the side of the vehicle body.
  • the tilt angle ⁇ 1 of the entire lens 4 By appropriately adjusting the tilt angle ⁇ 1 of the entire lens 4, the tilt angle ⁇ 2 (see FIG. 12A) of the image G toward the vehicle body side can be changed.
  • the lens 4 is provided so that the optical axes of the light La to Lc passing through the lenses 4a to 4c intersect in a plan view. Further, as shown in FIG. 24B, the lens 4 projects the image G closer to the vehicle body 51 as the lens 4 has a smaller diameter, and projects the image G farther from the vehicle body 51 as the lens 4 has a larger diameter. , The vertical tilt is adjusted.
  • the opening 31 of the shade 3 of the modified example is provided in a trapezoidal shape in which the upper base 32 is longer than the lower base 33.
  • the openings facing the lenses 4a, 4b, and 4c are 31a, 31b, and 31c, respectively.
  • Each opening 31 is tilted so as to be lowered toward the axle side, and the bottom angle of the upper bottom 32 facing the vehicle body side is the bottom angle of the openings 31a, 31b, 31c, respectively, ⁇ a, ⁇ b. , ⁇ c, it is provided so that ⁇ a> ⁇ b> ⁇ c.
  • the openings 31 are provided so that their sizes (areas) are different from each other. With this configuration, it is possible to suppress the expansion of the width W for a plurality of images G projected by light L that intersects each other in a plan view and has different vertical inclinations.
  • FIG. 26 shows how the image projection device 1 of the modified example is turned on.
  • the images Ga to Gc are drawn on a straight line A in which the optical axis of the light L emitted from the light source 2 is projected onto the road surface R.
  • the image Ga projected at a position away from the vehicle body 51 is longer and longer in the vehicle length direction than the image Gc projected at a position close to the vehicle body 51.
  • the image Ga projected at a position away from the vehicle body 51 is wider in the vehicle width direction than the image Gc projected at a position close to the vehicle body 51.
  • the opening 31 is provided in a trapezoidal shape, and the longer of the upper base 32 and the lower base 33 is farther from the image projection device 1 and the vehicle body 51. Since it is configured to correspond to the side G2 to be drawn, it has the effect of suppressing the extension of the image in the width direction and projecting a band-shaped image extending in the vehicle length direction. Further, since the plurality of openings 31 are formed together in the shade 3, the image projection device 1 can be manufactured with a small number of parts, and the labor and cost can be reduced.
  • the present invention is not limited to the above embodiment, and it is possible to appropriately change the shape and configuration of each part within a range that does not deviate from the gist of the present invention.
  • the projection may be started on the road surface in conjunction with the lighting of the headlamp.
  • the projection on the road surface may be started as a start light at the same time as the low beam is turned on.
  • Image projection device 2 Light source 3 Shade 4 Lens 5 Attachment 6 Extension 7 Board 11

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

L'invention concerne une lampe de véhicule avec laquelle il est possible de : supprimer toute variation d'éclairement (luminosité) parmi des images lorsqu'une pluralité d'images sont représentées ; coordonner la synchronisation de la représentation avec d'autres lampes de véhicule ; et représenter les images sous une forme équilibrée.　La présente invention comprend une pluralité de sources de lumière (2), et des lentilles (4) faisant face à chacune de la pluralité de sources de lumière (2) et ayant une pluralité de diamètres différents. La présente invention est conçue de telle sorte qu'une image (G) est projetée dans une position qui sera plus éloignée d'un dispositif de projection d'image (1) lorsque le rayon (r) de la lentille (4) augmente. En outre, un système de commande (11) est prévu, ledit système de commande (11) amenant les sources de lumière (2) à agir en coordination avec l'éclairage et l'extinction des autres lampes de véhicule (52). En outre, des écrans en forme de plaque (3) sont disposés entre les sources de lumière (2) et les lentilles (4).
PCT/JP2021/026800 2020-07-20 2021-07-16 Dispositif de projection d'image WO2022019231A1 (fr)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024062081A1 (fr) * 2022-09-22 2024-03-28 Valeo Vision Module lumineux pour dispositif de signalisation d'un véhicule automobile
WO2024063104A1 (fr) * 2022-09-21 2024-03-28 株式会社小糸製作所 Lampe pour le dessin

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004095481A (ja) * 2002-09-03 2004-03-25 Koito Mfg Co Ltd 車両用前照灯
JP2004095479A (ja) * 2002-09-03 2004-03-25 Koito Mfg Co Ltd 車両用前照灯
WO2017164328A1 (fr) * 2016-03-24 2017-09-28 株式会社小糸製作所 Lampe de véhicule, système de commande de lampe de véhicule, et véhicule doté de la lampe de véhicule et du système de commande de lampe de véhicule
WO2018066507A1 (fr) * 2016-10-04 2018-04-12 株式会社ユーシン Dispositif d'ouverture et de fermeture de porte
WO2018138842A1 (fr) * 2017-01-26 2018-08-02 三菱電機株式会社 Dispositif de commande d'irradiation et procédé d'irradiation
JP2018149820A (ja) * 2017-03-09 2018-09-27 株式会社小糸製作所 フォークリフト用安全装置
JP2019125520A (ja) * 2018-01-18 2019-07-25 株式会社小糸製作所 運転支援マーク投影装置
JP2020017488A (ja) * 2018-07-27 2020-01-30 マクセル株式会社 路面映像投射装置及び車両用灯具

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004095481A (ja) * 2002-09-03 2004-03-25 Koito Mfg Co Ltd 車両用前照灯
JP2004095479A (ja) * 2002-09-03 2004-03-25 Koito Mfg Co Ltd 車両用前照灯
WO2017164328A1 (fr) * 2016-03-24 2017-09-28 株式会社小糸製作所 Lampe de véhicule, système de commande de lampe de véhicule, et véhicule doté de la lampe de véhicule et du système de commande de lampe de véhicule
WO2018066507A1 (fr) * 2016-10-04 2018-04-12 株式会社ユーシン Dispositif d'ouverture et de fermeture de porte
WO2018138842A1 (fr) * 2017-01-26 2018-08-02 三菱電機株式会社 Dispositif de commande d'irradiation et procédé d'irradiation
JP2018149820A (ja) * 2017-03-09 2018-09-27 株式会社小糸製作所 フォークリフト用安全装置
JP2019125520A (ja) * 2018-01-18 2019-07-25 株式会社小糸製作所 運転支援マーク投影装置
JP2020017488A (ja) * 2018-07-27 2020-01-30 マクセル株式会社 路面映像投射装置及び車両用灯具

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024063104A1 (fr) * 2022-09-21 2024-03-28 株式会社小糸製作所 Lampe pour le dessin
WO2024062081A1 (fr) * 2022-09-22 2024-03-28 Valeo Vision Module lumineux pour dispositif de signalisation d'un véhicule automobile
FR3140147A1 (fr) * 2022-09-22 2024-03-29 Valeo Vision Module lumineux pour affichage dans plusieurs champs lumineux différents

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