WO2024122453A1 - 発音装置および車両用灯具 - Google Patents

発音装置および車両用灯具 Download PDF

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Publication number
WO2024122453A1
WO2024122453A1 PCT/JP2023/043073 JP2023043073W WO2024122453A1 WO 2024122453 A1 WO2024122453 A1 WO 2024122453A1 JP 2023043073 W JP2023043073 W JP 2023043073W WO 2024122453 A1 WO2024122453 A1 WO 2024122453A1
Authority
WO
WIPO (PCT)
Prior art keywords
diaphragm
sound
cover
generating device
lamp
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/JP2023/043073
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
和彦 船村
友一 村上
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.)
Koito Manufacturing Co Ltd
Original Assignee
Koito Manufacturing 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 Koito Manufacturing Co Ltd filed Critical Koito Manufacturing Co Ltd
Priority to JP2024562733A priority Critical patent/JPWO2024122453A1/ja
Publication of WO2024122453A1 publication Critical patent/WO2024122453A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • B60Q5/00—Arrangement or adaptation of acoustic signal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein

Definitions

  • the sound-producing device may further include a support frame to which a diaphragm cover is attached and which supports the diaphragm.
  • the diaphragm cover may have a diaphragm holder, and the outer periphery of the diaphragm may be sandwiched between the diaphragm holder and the support frame. In this way, the diaphragm holder can be used to more reliably fix the outer periphery of the diaphragm to the support frame.
  • the light-emitting element mounting portion 28 also functions as a support member for supporting the optical members of the optical unit 18.
  • the optical members may be fixed directly to the light-emitting element mounting portion 28, or may be attached to the light-emitting element mounting portion 28 via an appropriate attachment member such as a bracket.
  • the reflector 24 may be fixed directly to the light-emitting element mounting portion 28 by an appropriate fixing method such as screwing.
  • the projection lens 26 may be attached to the light-emitting element mounting portion 28 via an attachment member 32.
  • An external connection wiring 42 such as a wire harness, is connected to the control device 40.
  • the external connection wiring 42 connects the control device 40 to a power source, such as an on-board battery, that is provided outside the vehicle lamp 10, and the control device 40 is powered by this power source.
  • the control device 40 is also connected to the vehicle ECU via the external connection wiring 42 so as to be able to communicate with it.
  • the speaker 50 is configured to emit a sound audible to humans (typically a sound having a frequency in the range of, for example, about 20 Hz to about 20 kHz).
  • This audible sound may be a voice for communication with objects around the vehicle, or may be used as a warning sound to notify objects around the vehicle of an approaching vehicle.
  • the warning sound may be a pseudo engine sound that mimics the sound of a vehicle's engine, or may be a voice message that notifies objects of an approaching vehicle.
  • a circumferential groove is provided between the plate 56a and magnet 56b and the yoke 56c to form a magnetic gap in the magnetic circuit 56, and the coil 55 is disposed in this magnetic gap.
  • the coil 55 is connected to the second internal wiring 46 described above, which allows the coil 55 to be powered by the control device 40.
  • a drive current for driving the speaker 50 is supplied to the coil 55 from the control device 40, the interaction between the coil 55 and the magnetic circuit 56 causes the diaphragm 52 to vibrate together with the coil 55, and a sound corresponding to the drive current is generated.
  • the outer periphery of the support frame 60 is attached to the lamp body 12 by an appropriate fixing method, such as lance engagement or screw fastening.
  • a seal member 64 such as an O-ring, is sandwiched between the outer periphery of the support frame 60 and the lamp body 12. This ensures that the speaker 50 is waterproof, and prevents water from entering the speaker 50.
  • the wiring hole 48 may be formed in the lamp body 12 on the inside of the seal member 64 of the speaker 50. This allows the seal member 64 to prevent water from entering the lamp chamber 17 through the wiring hole 48.
  • a plurality of diaphragm stoppers 68 facing the diaphragm 52 are provided on the diaphragm cover 58.
  • the diaphragm stoppers 68 face the relatively outer side of the diaphragm 52, specifically the outer area 52b.
  • the diaphragm stoppers 68 are provided on the diaphragm cover 58 as convex portions protruding toward the diaphragm 52 from a portion of the back surface of the diaphragm cover 58 (i.e., the surface facing the diaphragm 52).
  • At least one sound output hole 66 is located between the multiple diaphragm stoppers 68.
  • the diaphragm cover 58 also has sound output holes 66 on the inside and outside of that.
  • the sound output hole 66 located in front of the central area 52a of the diaphragm 52 can be called the “first sound output hole 66a”
  • the sound output hole 66 located outside that and between the diaphragm stoppers 68 can be called the “second sound output hole 66b”
  • the sound output hole 66 located even further outside that (i.e. outside the diaphragm stopper 68) can be called the "third sound output hole 66c”.
  • the outer area 52b of the diaphragm 52 is expected to have a larger area that can come into contact with the diaphragm stopper 68 than the central area 52a.
  • the diaphragm stopper 68 faces the outer area 52b of the diaphragm 52. This makes it easier to design a diaphragm stopper 68 that contacts the diaphragm 52 over a larger area. This effectively prevents deformation of the diaphragm 52 that can occur during an airtight inspection, and provides better protection for the diaphragm 52.
  • the embodiments can also be expressed as the following numbered items: 1.
  • the diaphragm has a central area and an outer area; the diaphragm driver is disposed behind the central area of the diaphragm; 2.

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Signal Processing (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
PCT/JP2023/043073 2022-12-06 2023-12-01 発音装置および車両用灯具 Ceased WO2024122453A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2024562733A JPWO2024122453A1 (https=) 2022-12-06 2023-12-01

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022195055 2022-12-06
JP2022-195055 2022-12-06

Publications (1)

Publication Number Publication Date
WO2024122453A1 true WO2024122453A1 (ja) 2024-06-13

Family

ID=91379194

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2023/043073 Ceased WO2024122453A1 (ja) 2022-12-06 2023-12-01 発音装置および車両用灯具

Country Status (2)

Country Link
JP (1) JPWO2024122453A1 (https=)
WO (1) WO2024122453A1 (https=)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014057175A (ja) * 2012-09-11 2014-03-27 Omron Corp 音響トランスデューサ
JP2018121249A (ja) * 2017-01-26 2018-08-02 アンデン株式会社 発音器
JP2020156080A (ja) * 2019-03-13 2020-09-24 アンデン株式会社 発音器およびその製造方法
WO2022149587A1 (ja) * 2021-01-08 2022-07-14 株式会社小糸製作所 音発生構造
JP2022124827A (ja) * 2021-02-16 2022-08-26 株式会社デンソーエレクトロニクス 発音器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014057175A (ja) * 2012-09-11 2014-03-27 Omron Corp 音響トランスデューサ
JP2018121249A (ja) * 2017-01-26 2018-08-02 アンデン株式会社 発音器
JP2020156080A (ja) * 2019-03-13 2020-09-24 アンデン株式会社 発音器およびその製造方法
WO2022149587A1 (ja) * 2021-01-08 2022-07-14 株式会社小糸製作所 音発生構造
JP2022124827A (ja) * 2021-02-16 2022-08-26 株式会社デンソーエレクトロニクス 発音器

Also Published As

Publication number Publication date
JPWO2024122453A1 (https=) 2024-06-13

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