WO2023067939A1 - ランプ装置 - Google Patents

ランプ装置 Download PDF

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Publication number
WO2023067939A1
WO2023067939A1 PCT/JP2022/033798 JP2022033798W WO2023067939A1 WO 2023067939 A1 WO2023067939 A1 WO 2023067939A1 JP 2022033798 W JP2022033798 W JP 2022033798W WO 2023067939 A1 WO2023067939 A1 WO 2023067939A1
Authority
WO
WIPO (PCT)
Prior art keywords
obstacle detection
lamp
detection unit
translucent cover
housing
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2022/033798
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
健太郎 森
正之 金近
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stanley Electric Co Ltd
Original Assignee
Stanley Electric Co Ltd
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 Stanley Electric Co Ltd filed Critical Stanley Electric Co Ltd
Priority to EP22883250.7A priority Critical patent/EP4403950A4/en
Priority to CN202280068211.1A priority patent/CN118103724A/zh
Priority to US18/701,929 priority patent/US20250224091A1/en
Publication of WO2023067939A1 publication Critical patent/WO2023067939A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481—Constructional features, e.g. arrangements of optical elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/2805—Cover glass
    • 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
    • B60Q1/0017—Devices integrating an element dedicated to another function
    • B60Q1/0023—Devices integrating an element dedicated to another function the element being a sensor, e.g. distance sensor, camera
    • 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
    • B60Q1/04—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 the devices being headlights
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88—Lidar systems specially adapted for specific applications
    • G01S17/93—Lidar systems specially adapted for specific applications for anti-collision purposes
    • G01S17/931—Lidar systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/027—Constructional details of housings, e.g. form, type, material or ruggedness
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481—Constructional features, e.g. arrangements of optical elements
    • G01S7/4811—Constructional features, e.g. arrangements of optical elements common to transmitter and receiver
    • G01S7/4813—Housing arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/9323—Alternative operation using light waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/9327—Sensor installation details
    • G01S2013/93271—Sensor installation details in the front of the vehicles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G01S2013/9327—Sensor installation details
    • G01S2013/93277—Sensor installation details in the lights

Definitions

  • the present invention relates to a lamp device, and more particularly to a vehicle lamp device with a built-in obstacle detection device.
  • various sensors such as cameras, LiDAR (Light Detection and Ranging), and millimeter wave sensors are used for driving support and automatic driving of automobiles.
  • LiDAR Light Detection and Ranging
  • millimeter wave sensors are used for driving support and automatic driving of automobiles.
  • the obstacle detection device can directly detect the distance and direction to the object, as well as the relative speed with the object. Therefore, it has the feature that even an object at a short distance can be detected at high speed and with high accuracy.
  • LiDAR irradiates an obstacle with a 1-watt class pulse laser, detects the reflected light, and detects the distance from the time it takes to detect the reflected light. It has the advantage of being able to detect the position and shape with high accuracy by using a laser beam with a high luminous flux density and a short wavelength. This laser beam uses many elements in the near-infrared wavelength region, and can realize distance sensing and high optical resolution.
  • Patent Document 1 a light source unit and a millimeter wave radar are mounted, a resin cover is provided that appears on the exterior of the vehicle body, an opaque design part is provided on a part of the resin cover, and the millimeter wave radar is shielded by the design part.
  • a lamp is disclosed.
  • Patent Document 2 discloses an in-vehicle light provided with a separator that is disposed so as to partition a space between a lighting unit and a radar unit and shields transmission of radiant heat and electromagnetic waves between the lighting unit and the radar unit. An apparatus is disclosed.
  • a lamp chamber is formed between a lamp body and a front cover, a light source is provided inside the lamp chamber, a millimeter wave radar is installed outside the lamp chamber, and a millimeter wave radar is mounted on the front cover from the front.
  • a vehicular lamp having a shielding portion is disclosed.
  • the detection function of the obstacle detection device built into the lamp body will deteriorate.
  • the main reason for this is that the junction temperature of the semiconductor device used in the obstacle detection device becomes too high, resulting in deterioration of its function.
  • the power of the emitted electromagnetic wave is greater than that of millimeter-wave radar, resulting in a large amount of heat generation and a significant deterioration in detection function.
  • an obstacle detection device that detects the lateral direction of a vehicle is likely to be affected by radiant heat from the vehicle itself, such as engine heat.
  • the LiDAR device In order to solve this problem, for example, by attaching the LiDAR device to other than the lamp and detecting obstacles as a separate structure, it is not affected by the heat from the light source of the lamp or the radiant heat such as engine heat. It is conceivable to arrange However, although the problem of deterioration of the detection function due to heat is solved, a structural part for housing the obstacle detection device is required in addition to the lamp body, resulting in a problem of increased size.
  • the present invention has been made in view of the above points, and can effectively suppress the influence of the radiant heat of the vehicle itself such as the heat of the engine, and can be miniaturized by enclosing the obstacle detection device in the lamp body.
  • the object is to provide a lamp device.
  • a lamp device comprises: a base that is an attachment portion to a vehicle; a light source unit; a translucent cover that covers the front side of the base body and is attached to the base body so as to accommodate the light source unit therein, defining a lamp body space; an obstacle detection unit arranged at a horizontal side position of the light source unit on the light body space side of the translucent cover and configured to detect an obstacle by transmitting electromagnetic waves;
  • the obstacle detection unit includes a housing and an obstacle detection device housed in the housing, The housing is fixed to the translucent cover and spaced apart from the base.
  • FIG. 2 is a cross-sectional view schematically showing an example of the internal structure of the lamp device 10
  • FIG. 3 is a cross-sectional view showing radiant heat RH from a heat source 90 of a vehicle on which the lamp device 10 is mounted
  • FIG. 2 is a cross-sectional view schematically showing the structure of a lamp device 10 according to a second embodiment of the invention
  • FIG. 3 is a cross-sectional view schematically showing the structure of a lamp device 10 according to a third embodiment of the invention
  • FIG. 5 is a cross-sectional view schematically showing the structure of a lamp device 10 according to a fourth embodiment of the invention
  • FIG. 1 is a diagram schematically showing an example of the internal structure of a lamp device 10 according to a first embodiment of the invention.
  • the lamp device 10 is mounted on a vehicle such as an automobile.
  • the lamp device 10 is, for example, a headlight, but can also be applied to a lamp device having the purpose and function of emitting light to the outside, such as a tail light and a backlight.
  • FIG. 1 schematically shows a cross section of the lamp device 10 (left headlight) mounted on the front left side of the vehicle when viewed from above, that is, in a horizontal plane (or a plane parallel to the road surface). clearly shown.
  • horizontal and vertical planes refer to the horizontal and vertical planes (or directions) when the lamp device 10 is attached to the vehicle. ).
  • the lamp device 10 has a lamp section 11 and an obstacle detection unit 20 which is an obstacle detection section.
  • the base 12 and a translucent cover (front cover) 13 attached to the front side or front side of the base 12 constitute a lamp housing (casing) 11C.
  • a lamp body space 11K which is an internal space, is defined.
  • the lamp body space 11K is configured as a closed space.
  • the translucent cover 13 is attached to the base body 12 so as to cover the front side of the base body 12, and the lamp device 10 is mounted on the vehicle body (not shown) by attaching the base body 12 to the vehicle body side.
  • the base 12 is made of plastic (resin).
  • the headlamp is made of PP (polypropylene), and the tail lamp is made of ASA (acrylonitrile-styrene-acrylic rubber), but they are not limited to these. Moreover, metal etc. may be used partially.
  • the translucent cover 13 is made of translucent resin such as polycarbonate (PC).
  • the translucent cover 13 may have translucency to transmit light other than white such as red and yellow.
  • a light source unit 14 is provided in the lamp body space 11K of the lamp housing 11C.
  • the light source unit 14 has a light source 15 such as an LED (Light Emitting Diode) and an optical system 14L such as a lens or reflector for distributing and irradiating the light from the light source 15 along the optical axis AX1. .
  • the light source 15 is provided inside the light source housing 14K.
  • the light source unit 14 is provided so as to emit low beam (passing beam) and high beam (running beam) light LB forward (FR in the figure).
  • an extension or the like may be provided in the lamp housing 11C.
  • An extension is a design component provided to reflect light, guide light, or make an internal structure or the like less visible from the outside.
  • An obstacle detection unit 20 is fixed to the translucent cover 13 .
  • the obstacle detection unit 20 is provided on the rear surface of the translucent cover 13 so as to be positioned on the side of the light source unit 14 in the horizontal direction. Also, the obstacle detection unit 20 is provided at a position separated from the base 12 . More specifically, the obstacle detection unit 20 is provided at a position where the sidewalls and bottom of the obstacle detection unit 20 do not contact the base 12, that is, at a position where the base 12 does not contact the vehicle body when mounted on the vehicle body. .
  • the obstacle detection unit 20 has a housing 21 and an obstacle detection device 23 housed inside the housing 21 .
  • the obstacle detection device 23 transmits electromagnetic waves such as millimeter waves and laser beams, observes the electromagnetic waves reflected by the object, and measures the distance to the object and the shape of the object.
  • the obstacle detection unit 20 is separated from the lamp body space 11K of the lamp housing 11C by the housing 21, and a space (obstacle detection unit space) 20K separated from the lamp body space 11K is defined.
  • the housing 21 of the obstacle detection unit 20 is fixed to the rear surface of the translucent cover 13, that is, inside the lamp body space 11K.
  • a portion 21S of the translucent cover 13 facing the obstacle detection unit 20 and the housing 21 define an obstacle detection unit space 20K.
  • existing methods such as screwing, adhesive, and welding between resins can be selected.
  • a resin containing an electromagnetic wave absorbing material such as carbon is used for the housing 21 of the obstacle detection unit 20 in order to absorb the electromagnetic waves emitted from the obstacle detection device 23, for example, if the electromagnetic waves are in the millimeter wave band.
  • a member obtained by coating or attaching an electromagnetic wave absorber to the surface or back surface of the housing 21 can be used.
  • infrared absorbing substances such as LaB6 (lanthanum hexaboride), CWO (cesium doped tungsten oxide), ITO (tin doped indium oxide), ATO (antimony doped tin oxide) are used as carbon.
  • infrared absorbing substances such as LaB6 (lanthanum hexaboride), CWO (cesium doped tungsten oxide), ITO (tin doped indium oxide), ATO (antimony doped tin oxide) are used as carbon.
  • LaB6 lanthanum hexaboride
  • CWO cesium doped tungsten oxide
  • ITO tin doped indium oxide
  • ATO antimony doped tin oxide
  • the component that is reflected by the translucent cover 13 and then multiple-reflected in the lamp body space 11K or the obstacle detection unit space 20K and becomes noise is absorbed. and the detection accuracy can be improved.
  • the obstacle detection unit 20 has an obstacle detection device 23 which is a distance detection sensor provided in the obstacle detection unit space 20K.
  • the obstacle detection device 23 is, for example, a detection and ranging device using electromagnetic waves such as LiDAR and radar devices.
  • the portion of the translucent cover 13 of the lamp device 10 facing the light source unit 14 transmits visible light, while the portion facing the obstacle detection unit 20 transmits electromagnetic waves emitted by the obstacle detection device 23.
  • it may be non-transmissive or translucent to visible light. In this case, the obstacle detection unit 20 becomes invisible from the outside, which is preferable in terms of design.
  • the translucent cover 13 is made of a resin material that transmits visible light, and then the portion facing the obstacle detection unit 20 is made by two-color molding using a non-translucent material. be able to. Also, instead of two-color molding, a film made of a non-translucent material may be attached to the portion.
  • the obstacle detection device 23 has a transmitter/receiver 23T, and the central axis AX2 of the electromagnetic wave from the transmitter/receiver 23T is directed outward (that is, with respect to the traveling direction FR of the vehicle) with respect to the optical axis AX1 of the light source unit 14 (or In the case of a left headlamp, it is arranged to incline to the left) by an angle ⁇ ( ⁇ >0).
  • the detection range of the obstacle searching device 23 may have a spread of a predetermined angle from the central axis AX2 of the electromagnetic wave.
  • the location where the housing 21 is fixed to the translucent cover 13 is preferably set outside this angular range. As a result, deterioration in the detection accuracy of the obstacle searching device 23 can be suppressed.
  • FIG. 2 is a cross-sectional view schematically showing an example of the internal structure of the lamp device 10.
  • FIG. 1 shows a cross section (direction indicated by A in FIG. 1) in a vertical plane including a central axis AX2, which is the central axis of the transmitting/receiving antenna for electromagnetic waves by the transmitting/receiving section 23T or the central axis of laser beam scanning.
  • the obstacle detection device 23 is arranged so as to be positioned outside the light source unit 14 in the horizontal plane (that is, laterally in the horizontal direction).
  • FIG. 2 shows that the light source unit 14 (indicated by broken lines) is arranged behind the obstacle detection device 23 .
  • FIG. 3 is a diagram similar to FIG. 1, but shows radiant heat RH from a heat source 90 such as an engine of a vehicle in which the lamp device 10 is mounted.
  • the lamp device 10 has the lamp body space 11K that receives radiant heat from the heat source 90 such as an engine.
  • the obstacle detection unit 20 is separated by the lamp body space 11K of the lamp section 11 to avoid the influence of radiant heat RH from the heat source 90 of the vehicle itself, which is in a high temperature environment. That is, since the obstacle detection unit 20 is not in direct contact with the heat source 90 of the vehicle itself, the temperature rise of the obstacle detection unit 20 can be reduced.
  • FIG. 4 is a partially enlarged sectional view schematically showing the structure of the lamp device 10 of the second embodiment of the invention. More specifically, it is an enlarged view showing the structure of the obstacle detection unit 20.
  • FIG. 4 is a partially enlarged sectional view schematically showing the structure of the lamp device 10 of the second embodiment of the invention. More specifically, it is an enlarged view showing the structure of the obstacle detection unit 20.
  • a portion 21S of the translucent cover 13 facing the housing 21 of the obstacle detection unit 20 has a communication portion 21C which is a hole through which the outside and the obstacle detection unit space 20K communicate. That is, the obstacle detection unit 20 is not sealed, and the obstacle detection unit space 20K, which is its internal space, is a non-sealed space. In addition, it is preferable that a plurality of communicating portions 21C are provided.
  • the obstacle detection device 23 is attached to the translucent cover 13 so as to have a gap from the surface of the obstacle detection device housing 21 (see FIG. 2).
  • the obstacle detection device 23 has an air circulation path 21A formed between the rear surface of the obstacle detection device 23 and the obstacle detection device housing 21, and the sensors operating in the obstacle detection device 23 dissipate heat. , cooling is performed, and the influence of heat from the lamp portion 11 can be reduced.
  • FIG. 5 is a cross-sectional view schematically showing the structure of a lamp device 10 according to a third embodiment of the invention.
  • the obstacle detection unit 20 has a closed structure and has a space separated from the lamp body space 11K.
  • the housing 21 of the obstacle detection unit 20 is attached to the translucent cover 13 of the lamp portion 11 via the seal portion 25, and the internal space of the obstacle detection unit 20 (obstacle detection unit space 20K) is It is configured as a closed space.
  • the obstacle detection unit space 20K is formed as an isolated space in which heat from the lamp body space 11K is cut off.
  • a transmission/reception circuit board 23C which is a sensor circuit as an obstacle detection device, is provided inside the obstacle detection unit 20. More specifically, the transmission/reception circuit board 23C includes a transmission wave generator (generator), a transmission/reception circuit such as a monolithic microwave integrated circuit (MMIC) that transmits and receives electromagnetic waves such as millimeter waves and laser light, and an interface circuit. circuit board. Therefore, the transmitting/receiving circuit board 23C is configured as a circuit board having good heat dissipation.
  • the obstacle detection device circuit board 23C is provided so as to be exposed inside the obstacle detection unit space 20K of the obstacle detection unit 20. As shown in FIG.
  • the transmitting/receiving circuit board 23C is connected to a detection device control module 27 arranged in the lamp body space 11K of the lamp section 11, for example.
  • the sniffer control module 27 is provided, for example, in a light control module (LCM).
  • the detection device control module 27 functions as a signal processing and control circuit that processes detection signals from the transmission/reception circuit board 23C and controls the transmission/reception circuit board 23C. That is, the transmitting/receiving circuit board 23C and the detection device control module 27 constitute the obstacle detection unit 20. As shown in FIG.
  • the detector control module 27 is configured as a processor (for example, a CPU) and is the main heat generator of the obstacle detection unit 20 .
  • the signal processing and control circuit for the detection signal of the transmission/reception circuit board 23C is provided outside the obstacle detection unit space 20K as the detector control module (processor) 27.
  • the transmitting/receiving circuit board 23C is configured as a circuit board with good heat dissipation, and the detector control module 27, which mainly generates heat, is provided separately from the transmitting/receiving circuit board 23C. less fever.
  • the heat generated by the transmitting/receiving circuit board 23C is dissipated through the translucent cover 13, suppressing the temperature rise in the obstacle detection unit space 20K, thereby suppressing the characteristic deterioration due to the temperature rise of the sensor circuit.
  • the obstacle detection device transmitting/receiving circuit board 23C functioning as the obstacle detection device sensor 23 is separated by the lamp body space 11K of the lamp section 11, has excellent cooling effect, and is not affected by the radiant heat RH from the heat source 90 of the vehicle. is reduced.
  • FIG. 6 is a cross-sectional view schematically showing the structure of a lamp device 10 according to a fourth embodiment of the invention.
  • the obstacle detection unit 20 is fixed by being fitted into a through hole 13H provided in a part of the translucent cover 13. More specifically, the flange portion 21F formed on the periphery of the housing 21 of the obstacle detection unit 20 is joined to the periphery of the through hole 13H of the translucent cover 13, and the housing 21 is attached to the translucent cover 13. Fixed.
  • the obstacle detection device 23 is fixed inside the housing 21 . Furthermore, the front opening of the obstacle detector housing 21 is covered with a non-translucent cover 21D.
  • non-translucent cover 21D is preferably heat-shielding.
  • resins such as polycarbonate, acrylic, and PBT can be used.
  • foamed resin heat can be shielded and weight reduction can be achieved.
  • the obstacle detection device 23 is separated by the lamp body space 11K of the lamp portion 11, thereby reducing the influence of the radiant heat RH from the heat source 90 of the vehicle, which is in a high-temperature environment. temperature rise can be prevented.
  • the non-light-transmitting cover 21D for example, a material through which the electromagnetic waves emitted by the obstacle detection device 23 can pass more easily than the light-transmitting cover 13 can be used, and the accuracy of obstacle detection can be improved.
  • the exterior color of the non-light-transmitting cover 21D can be freely changed, for example, to match the color of the vehicle body, which is preferable in terms of design.
  • the non-light-transmitting cover 21D can be integrated with the light-transmitting cover 13, which is preferable in terms of design.
  • Lamp Device 11 Lamp Section 11C: Lamp Case 11K: Lamp Body Space 12: Substrate 13: Translucent Cover 13D: 14: Light source unit 14K: Light source housing 14L: Optical system 15: Light source 20: Obstacle detection unit 20K: Obstacle detection unit space 21: Housing of obstacle detection unit 21A: Air circulation path 21C: Communication part 23: Obstacle Object detection device 23C: Transmitting/receiving circuit board 25: Seal portion 26: Heat insulating member 27: Detecting device control module 90: Heat source

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • General Engineering & Computer Science (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Radar Systems Or Details Thereof (AREA)
PCT/JP2022/033798 2021-10-19 2022-09-08 ランプ装置 Ceased WO2023067939A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP22883250.7A EP4403950A4 (en) 2021-10-19 2022-09-08 LAMP DEVICE
CN202280068211.1A CN118103724A (zh) 2021-10-19 2022-09-08 灯装置
US18/701,929 US20250224091A1 (en) 2021-10-19 2022-09-08 Lamp device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021-171156 2021-10-19
JP2021171156A JP2023061263A (ja) 2021-10-19 2021-10-19 ランプ装置

Publications (1)

Publication Number Publication Date
WO2023067939A1 true WO2023067939A1 (ja) 2023-04-27

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JP2023061263A (ja) 2023-05-01
CN118103724A (zh) 2024-05-28

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