WO2024128027A1 - Sound producing device and vehicular lamp - Google Patents

Sound producing device and vehicular lamp Download PDF

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Publication number
WO2024128027A1
WO2024128027A1 PCT/JP2023/043072 JP2023043072W WO2024128027A1 WO 2024128027 A1 WO2024128027 A1 WO 2024128027A1 JP 2023043072 W JP2023043072 W JP 2023043072W WO 2024128027 A1 WO2024128027 A1 WO 2024128027A1
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WIPO (PCT)
Prior art keywords
sound
diaphragm
cylindrical portion
generating device
support frame
Prior art date
Application number
PCT/JP2023/043072
Other languages
French (fr)
Japanese (ja)
Inventor
友一 村上
Original Assignee
株式会社小糸製作所
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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
Publication of WO2024128027A1 publication Critical patent/WO2024128027A1/en

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  • the present invention relates to a sound-producing device, such as a speaker.
  • the present invention also relates to a vehicle lamp equipped with such a sound-producing device and used in a vehicle, such as an automobile.
  • a design may be adopted in which a sealing member such as an O-ring is sandwiched between the housing of the sound generating device and the mounting surface for waterproofing purposes.
  • the desired waterproof performance can be achieved by keeping the sealing member in the correct position.
  • problems may occur during assembly, such as the sealing member accidentally becoming dislodged from its correct position due to some factor, such as carelessness on the part of the worker. In this case, assembly defects and waterproofing problems may occur due to the sealing member being misaligned.
  • the present invention has been made in consideration of these circumstances, and one exemplary purpose of one embodiment of the present invention is to provide a sound-producing device having a structure for holding a sealing member in the correct position.
  • a sound-generating device comprises a diaphragm, a support frame that has a tubular portion to which an annular sealing member is attached and supports the diaphragm.
  • the tubular portion of the support frame extends from one end face of the tubular portion in the direction of the central axis of the tubular portion and comprises an attachment portion that can be attached to an attachment surface, and a protrusion that protrudes radially outward from the tubular portion between the sealing member and the end face of the tubular portion in the direction of the central axis.
  • a radially outward protrusion is provided on the cylindrical portion of the support frame to which the sealing member is attached. This protrusion serves to prevent the sealing member from going beyond the protrusion and coming off toward the end face of the cylindrical portion. It is possible to provide a sound-producing device having a structure for holding the sealing member in the correct position.
  • the cylindrical portion of the support frame may have a plurality of protrusions that protrude radially outward from the cylindrical portion between the sealing member and the end face of the cylindrical portion in the direction of the central axis, and the plurality of protrusions may be provided along the circumference of the cylindrical portion.
  • the cylindrical portion of the support frame may include a seal member support portion adjacent to the seal member on the opposite side of the central axis from the protrusion. In this way, the seal member can be held between the protrusion and the seal member support portion.
  • the seal member may be held in the tubular portion between the protrusion and the seal member support portion.
  • the seal member support portion may be continuous around the entire circumference of the tube portion.
  • the support frame may include a diaphragm support disposed within the cylindrical portion and supporting the diaphragm.
  • the sound-producing device may further include a diaphragm cover having a sound output hole and covering the diaphragm.
  • the diaphragm cover may be attached to the support frame on the opposite side of the diaphragm from the diaphragm support.
  • the tubular portion of the support frame may have an open end with a mounting portion, and the mounting surface may act as a lid that closes the open end of the tubular portion when the mounting portion is attached to the mounting surface.
  • a vehicle lamp includes a sound-producing device according to any one of the above aspects and a lamp housing having a mounting surface.
  • the sound-producing device is attached to the mounting surface of the lamp housing by a mounting portion.
  • the vehicle lamp may further include a control device disposed within the lamp housing for controlling the sound generating device.
  • the sound generating device may be disposed outside the lamp housing and below the control device.
  • the sealing member is sandwiched between the cylindrical portion of the support frame and the lamp housing, and the lamp housing may have a communication hole inside the sealing member that connects the internal space of the lamp housing to the internal space of the cylindrical portion of the support frame.
  • the communication hole may be formed in the lamp housing to allow internal wiring to pass through that connects the control device that controls the sound generating device to the sound generating device.
  • the sound generating device may be attached to the lamp housing so that it emits sound downward.
  • the present invention provides a sound-producing device that has a structure for holding the sealing member in the correct position.
  • 1 is a schematic front view of a vehicle lamp according to an embodiment
  • 2 is a schematic diagram showing a vertical cross section of the vehicle lamp shown in FIG. 1 taken along line AA.
  • 1 is a schematic perspective view of a sound generation device according to an embodiment
  • 1 is a schematic diagram showing a vertical cross section of a sound generation device according to an embodiment.
  • FIG. 1 is a schematic front view of a vehicle lamp according to an embodiment.
  • FIG. 2 is a schematic diagram showing a vertical cross section of the vehicle lamp shown in FIG. 1 taken along line A-A.
  • FIG. 3 is a schematic perspective view of a sound-producing device according to an embodiment.
  • FIG. 4 is a schematic diagram showing a vertical cross section of the sound-producing device according to an embodiment, which corresponds to the cross section of line B-B of the sound-producing device shown in FIG. 3.
  • the vehicle lamp 10 which will be described in detail later, is equipped with a speaker 50 as a sound generating device.
  • the speaker 50 is attached to, for example, the bottom of the vehicle lamp 10.
  • the speaker 50 may be used to implement a vehicle approach notification function in the vehicle lamp 10.
  • a notification sound such as a pseudo engine sound that simulates an engine sound
  • By emitting a notification sound, such as a pseudo engine sound that simulates an engine sound, from the speaker 50 it is possible to notify objects around the vehicle, such as pedestrians and other vehicles, of the approach of the vehicle.
  • a notification sound such as a pseudo engine sound that simulates an engine sound
  • the vehicle lamp 10 is a vehicle headlamp device having a pair of headlamp units arranged on the left and right sides in front of the vehicle.
  • the pair of headlamp units have a roughly symmetrical structure and are essentially identical in configuration, so FIG. 1 shows the vehicle lamp located on the left side when viewed from the front of the vehicle body. Therefore, in FIG. 1, the left side corresponds to the outer side in the vehicle width direction, and the right side corresponds to the inner side in the vehicle width direction.
  • the vehicle lamp 10 comprises a lamp body 12 having a front opening 13, and a translucent cover 14 attached to the front side of the lamp body 12 so as to cover the front opening 13 that opens to the front side of the vehicle.
  • the translucent cover 14 is often called an outer lens.
  • the lamp body 12 is configured so as to be attachable to the vehicle body, and the translucent cover 14 is attached to the vehicle body via the lamp body 12.
  • the lamp body 12 and the translucent cover 14 are combined to form a lamp housing 16, and the internal space of the lamp housing 16 is formed as a lamp chamber 17.
  • the lamp body 12 is formed of an appropriate synthetic resin material, such as a general-purpose resin material.
  • the translucent cover 14 is formed of an appropriate translucent material, such as a translucent synthetic resin material or glass.
  • the vehicle lamp 10 includes at least one optical unit 18, such as a headlamp unit, disposed within the lamp chamber 17.
  • the optical unit 18 functions as a headlamp.
  • the optical unit 18 may be configured to provide at least one of three functions: low beam, high beam, and adaptive high beam that forms an optimal light distribution pattern depending on the conditions around the vehicle.
  • the vehicle lamp 10 may include at least one additional optical unit, in this example, a first marker light unit 20a and a second marker light unit 20b. Like the optical unit 18, these additional units are also arranged within the lamp chamber 17. As a non-limiting example, as shown in FIG. 1, the first marker light unit 20a may be arranged above the optical unit 18, and the second marker light unit 20b may be arranged inside the optical unit 18. Also, a further optical unit, for example a third marker light unit (not shown), may be arranged below the optical unit 18.
  • the vehicle lamp 10 can provide multiple different lamp functions by including multiple optical units.
  • the first marker lamp unit 20a may be an optical unit that functions as a clearance lamp and/or a daytime running lamp
  • the second marker lamp unit 20b may be an optical unit that functions as a front turn signal lamp.
  • the optical unit 18 is supported by the lamp body 12 via a known swing mechanism, and is configured so that the direction of the optical axis extending in the fore-and-aft direction of the vehicle can be adjusted vertically and/or horizontally.
  • the first marker light unit 20a and the second marker light unit 20b are fixedly supported by the lamp body 12.
  • the optical unit 18 includes a light source 22 and at least one optical member (e.g., a reflector 24, a projection lens 26) for directing the light emitted by the light source 22 toward the translucent cover 14.
  • the optical unit 18 also includes a light-emitting element mounting section 28 having a heat dissipation section 30.
  • the light source 22 has a semiconductor light-emitting element 22a, such as a light-emitting diode (LED) or other light-emitting element, and a board 22b, such as a printed circuit board, on which the light-emitting element 22a is mounted.
  • the light source 22 is mounted on the light-emitting element mounting section 28 with the light emission surface of the light-emitting element 22a facing upward in the vehicle and the optical axis of the light-emitting element 22a extending in approximately the vertical direction of the vehicle.
  • the reflector 24 is disposed above the light source 22 so as to reflect the light emitted from the light source 22 towards the projection lens 26.
  • the reflector 24 is a reflective member with a reflective surface formed on the inner surface facing the light source 22, and the reflective surface is formed, for example, of a part of an ellipsoid of revolution or any other suitable curved surface.
  • the projection lens 26 is disposed forward of the light source 22 so as to project the reflected light from the reflector 24 in front of the lamp.
  • the projection lens 26 is a plano-convex aspheric lens with a convex front surface and a flat rear surface, and is formed from a suitable translucent material such as a translucent synthetic resin material or glass.
  • the light emitted from the light-emitting element 22a of the light source 22 is reflected by the reflecting surface of the reflector 24 and directed toward the projection lens 26.
  • the light is emitted outside the vehicle lamp 10 through the projection lens 26 and the translucent cover 14.
  • the light-emitting element mounting section 28 provides a support surface that supports the light source 22, and is formed integrally with the heat dissipation section 30.
  • the heat dissipation section 30 has a number of heat dissipation fins that extend rearward from the light-emitting element mounting section 28. Each heat dissipation fin may be parallel to the vertical plane.
  • the light-emitting element mounting section 28 and the heat dissipation section 30 also function as heat dissipation members that dissipate heat generated by the light source 22, and are also called heat sinks.
  • the light-emitting element mounting section 28 and the heat dissipation section 30 are formed of a metal material with high thermal conductivity, such as aluminum or an aluminum alloy, and are manufactured, for example, by a die casting method.
  • 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.
  • the optical unit 18 may be an optical unit for a so-called projector type headlamp, also known as a PES (Polyellipsoid System) type.
  • the optical unit 18 may also be an optical unit for other types of headlamps, such as a parabolic headlamp or a so-called blade scan type headlamp that uses a rapidly rotating reflector to enable adaptive light distribution control.
  • the vehicle lamp 10 further includes a control device 40, also referred to as a lamp ECU (Electronic Control Unit), which controls the vehicle lamp 10.
  • a control device 40 Under the control of a higher-level controller (also referred to as a vehicle ECU) that is disposed outside the vehicle lamp 10 and controls the entire vehicle or a part of it, the control device 40 controls the optical unit 18, the first marker light unit 20a, and the second marker light unit 20b.
  • the control device 40 obtains vehicle information required to control the vehicle lamp 10 from the vehicle ECU, and controls the operation of each optical unit (e.g., on/off, light intensity, etc.) based on this information.
  • the control device 40 may also control the operation of the speaker 50 (e.g., on/off, volume, etc.) based on the vehicle information from the vehicle ECU.
  • the control device 40 is disposed within the lamp chamber 17 below the optical unit 18.
  • the control device 40 typically comprises a control circuit board having a planar shape, such as a printed circuit board.
  • the control device 40 may comprise a flat housing that houses such a board.
  • the lamp body 12 may have a planar portion on its bottom surface on which the control device 40 is disposed, and the control device 40 may be attached to the planar portion of the lamp body 12 by an appropriate fixing method, such as screwing.
  • control device 40 may not be attached directly to the lamp body 12, but may be attached to the lamp body 12 via an appropriate support member, such as a bracket that is disposed within the lamp chamber 17 and supported by the lamp body 12.
  • a support member may have a flat portion that extends along the bottom surface of the lamp body 12 below the optical unit 18, and the control device 40 may be attached to this flat portion. In this way, the control device 40 may be disposed below the optical unit 18 within the lamp chamber 17.
  • 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.
  • a first internal wiring 44 such as a wire harness is provided to electrically connect the control device 40 to the optical unit 18.
  • the first internal wiring 44 is connected to the substrate 22b of the light source 22 of the optical unit 18.
  • the control device 40 supplies power to the light source 22 and controls the light source 22 through the first internal wiring 44.
  • internal wiring may be provided to electrically connect the control device 40 to other optical units (e.g., the first marker light unit 20a, the second marker light unit 20b).
  • a second internal wiring 46 such as a wire harness may be provided to electrically connect the control device 40 to the speaker 50, and the control device 40 may supply power to and control the speaker 50 through the second internal wiring 46.
  • the lamp body 12 may have a wiring hole 48 through which the second internal wiring 46 passes.
  • the second internal wiring 46 can be connected from the control device 40 in the lamp chamber 17 to the speaker 50 through the wiring hole 48.
  • 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.
  • the speaker 50 may be attached to the lamp housing 16 so as to emit sound 62 downward. Although it depends on the design of the vehicle in which the vehicle lamp 10 is installed, the lower part of the vehicle lamp 10 is often an empty space or faces the ground. By emitting sound 62 downward from the speaker 50, it is possible to effectively propagate the sound around the vehicle by utilizing resonance in the empty space and reflection on the ground. Compared to when the speaker 50 is located in another location, for example, stored in the lamp chamber 17 or installed on the outside back surface of the lamp housing 16, it is possible to effectively propagate the sound around the vehicle.
  • the speaker 50 is placed outside the lamp chamber 17 and below the control device 40.
  • the area where the control device 40 is placed which occupies a considerable area below the optical unit 18, can be used as an installation location for the speaker 50.
  • the control device 40 is placed inside the lamp chamber 17 and the speaker 50 is placed outside the lamp chamber 17, both devices can be installed in the vehicle lamp 10 without interfering with each other.
  • the speaker 50 includes a diaphragm 52, also called a diaphragm, and a diaphragm driver 54 configured to vibrate the diaphragm 52. That is, the speaker 50 is configured to emit sound by vibrating the diaphragm 52 incorporated in the speaker 50 through driving of the diaphragm driver 54.
  • the diaphragm 52 has a central area 52a and an outer area 52b, and has an overall conical shape.
  • the diaphragm driver 54 is disposed behind the central area 52a of the diaphragm 52, and includes a coil 55 and a magnetic circuit 56.
  • the coil 55 is attached to the diaphragm 52 at the boundary between the central area 52a and the outer area 52b of the diaphragm 52.
  • the magnetic circuit 56 has a plate 56a, a magnet 56b, and a yoke 56c.
  • the plate 56a and the magnet 56b have a disk shape of roughly the same size.
  • the yoke 56c has a short cylindrical shape with a central recess that can accommodate the plate 56a and the magnet 56b, and the magnet 56b is sandwiched between the plate 56a and the yoke 56c.
  • the plate 56a and the yoke 56c are made of a magnetic material such as iron.
  • 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 speaker 50 also includes a housing for the speaker 50 that houses the diaphragm 52 and the diaphragm driver 54, which includes a diaphragm cover 58 that covers the diaphragm 52 and a support frame 60 that supports the diaphragm 52.
  • the diaphragm cover 58 and the support frame 60 may be formed from an appropriate synthetic resin material, such as a general-purpose resin material, or other materials.
  • the diaphragm cover 58 is disposed on the opposite side of the diaphragm 52 from the diaphragm drive unit 54 (i.e., on the front side of the diaphragm 52).
  • the diaphragm cover 58 is attached to the outer periphery of the support frame 60 by an appropriate fixing method, such as lance engagement or screw fastening.
  • the diaphragm cover 58 is provided with a plurality of sound output holes 66 to effectively transmit the sound emitted from the diaphragm 52 to the outside of the speaker 50. At least one of these sound output holes 66 may be located in front of the central area 52a of the diaphragm 52, and at least one other of the sound output holes 66 may be located in front of the outer area 52b of the diaphragm 52.
  • the sound output hole 66 is a through hole formed in the diaphragm cover 58.
  • the sound output hole 66 may be, for example, a concentric slit.
  • the sound output hole 66 may take various other forms, such as an array of multiple circular holes or other small holes.
  • the support frame 60 comprises a tube portion 60a and a diaphragm support 60b.
  • the tube portion 60a is roughly cylindrical and forms the outer periphery of the support frame 60.
  • the diaphragm support 60b is disposed within the tube portion 60a of the support frame 60 and supports the diaphragm 52.
  • the diaphragm support 60b is connected at its outer periphery to the front end of the tube portion 60a (the end on the diaphragm cover 58 side).
  • the tube portion 60a and the diaphragm support 60b may be formed integrally.
  • the outer periphery of the diaphragm 52 is attached to the outer periphery of the diaphragm support 60b.
  • the diaphragm 52 is attached to the outer periphery of the diaphragm support 60b by an appropriate fixing method, for example, gluing.
  • a yoke 56c is fitted into a circular opening provided in the center of the diaphragm support 60b, whereby the magnetic circuit 56 is positioned in this circular opening together with the coil 55.
  • the cylindrical portion 60a of the support frame 60 is open at the rear end opposite the diaphragm support 60b. Therefore, as shown in FIG. 3, the diaphragm support 60b and magnetic circuit 56 of the speaker 50 before installation can be seen from this open side.
  • the cylindrical portion 60a of the support frame 60 has a number of mounting portions 74 that can be attached to the mounting surface 12a.
  • the mounting portions 74 are portions that extend from an end face 76 of the cylindrical portion 60a opposite the diaphragm 52 (and the diaphragm support 60b) in the direction of the central axis of the cylindrical portion 60a (the up-down direction in the figure). The tip of this extension is bent radially outward.
  • such mounting portions 74 are provided at three locations at equal intervals around the circumference of the cylindrical portion 60a.
  • the number of mounting portions 74 provided on the support frame 60 is arbitrary, and may be provided at four or more locations, for example.
  • the mounting surface 12a is a part of the bottom surface of the lamp body 12.
  • the speaker 50 is attached to the mounting surface 12a by the mounting portion 74.
  • the speaker 50 may be fixed to the mounting surface 12a, for example, by rotational assembly.
  • the mounting surface 12a is formed with an opening that corresponds to the mounting portion 74 and receives the mounting portion 74.
  • the speaker 50 is brought close to the mounting surface 12a in the direction of the central axis of the cylindrical portion 60a, and each mounting portion 74 is inserted into the corresponding opening of the mounting surface 12a, and the speaker 50 is rotated around the axis.
  • the mounting portion 74 engages with the mounting surface 12a at the opening, and the speaker 50 is fixed to the mounting surface 12a.
  • the mounting surface 12a closes the open end of the cylindrical portion 60a like a lid, as shown in FIG. 4.
  • a ring-shaped seal member 64 such as an O-ring, is attached to the cylindrical portion 60a of the support frame 60. As shown in FIG. 4, the seal member 64 is sandwiched between the cylindrical portion 60a and the lamp body 12. This ensures that the speaker 50 is waterproof, and prevents water from entering the interior of 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.
  • the cylindrical portion 60a of the support frame 60 has a number of protrusions 78 and a seal member support portion 80.
  • the seal member 64 is omitted in order to clearly show the protrusions 78 and the seal member support portion 80.
  • the protrusions 78 protrude radially outward from the tubular portion 60a between the sealing member 64 and the end face 76 of the tubular portion 60a in the direction of the central axis of the tubular portion 60a.
  • the protrusions 78 are provided at three locations at equal intervals along the circumference of the tubular portion 60a, similar to the mounting portion 74.
  • the protrusions 78 are provided at the same circumferential position as the mounting portion 74.
  • the arrangement and shape of the protrusions 78 are not limited to this particular example.
  • the protrusions 78 may be provided at a circumferential position different from the mounting portion 74.
  • the number of protrusions 78 is arbitrary, and may be provided in four or more locations, for example.
  • the protrusions 78 may be continuous around the entire circumference of the tubular portion 60a.
  • the seal member support portion 80 is adjacent to the seal member 64 on the opposite side to the protrusion 78 in the direction of the central axis of the tubular portion 60a.
  • the seal member support portion 80 protrudes radially outward from the tubular portion 60a and is continuous around the entire circumference of the tubular portion 60a.
  • the seal member support portion 80 can be used as a marker to indicate the correct installation position of the seal member 64 when installing the seal member 64 on the tubular portion 60a of the support frame 60.
  • the arrangement and shape of the seal member support portion 80 are not limited to this specific example.
  • the seal member support portion 80 may be provided at multiple locations on the outer circumferential surface of the tubular portion 60a in a discontinuous manner in the circumferential direction.
  • the sealing member 64 in order for the sealing member 64 to achieve the desired waterproof performance, it is required that the sealing member 64 be sandwiched between the tubular portion 60a and the lamp body 12 while being held in the correct position. If the sealing member 64 accidentally becomes displaced from the correct position due to some cause, such as carelessness on the part of the worker, during the assembly work on the mounting surface 12a of the speaker 50, this displacement of the sealing member 64 may result in poor assembly or poor waterproofing.
  • a radially outward protrusion 78 is provided on the tubular portion 60a of the support frame 60 to which the sealing member 64 is attached.
  • This protrusion 78 serves to prevent the sealing member 64 from going beyond the protrusion 78 and coming off toward the end face 76 of the tubular portion 60a.
  • the speaker 50 according to the embodiment has a structure for holding the sealing member 64 in the correct position. Therefore, during the assembly of the speaker 50 to the mounting surface 12a, the sealing member 64 is less likely to become misaligned, improving the assembly of the speaker 50. This can reduce manufacturing costs. In addition, it is possible to prevent poor waterproofing caused by the sealing member 64 being misaligned.
  • the cylindrical portion 60a of the support frame 60 also includes a seal member support portion 80 adjacent to the seal member 64 on the opposite side of the protrusion 78 in the direction of the central axis of the cylindrical portion 60a. Therefore, the seal member 64 can be well held between the above-mentioned protrusion 78 and the seal member support portion 80.
  • the present invention is not limited to the above-described embodiments and modifications, but may be combined with the embodiments and modifications, or may include further modifications such as various design changes based on the knowledge of those skilled in the art, and such combined or further modified embodiments and modifications are also included in the scope of the present invention.
  • the above embodiment has been described using the vehicle lamp 10 as an example of a vehicle headlamp device, but the present invention is not limited to this.
  • the vehicle lamp 10 may be another vehicle lamp, such as a marker light unit installed at the rear of the vehicle.
  • a diaphragm a support frame for supporting the diaphragm, the support frame including a cylindrical portion to which an annular seal member is attached,
  • the cylindrical portion of the support frame is an attachment portion extending from one end surface of the cylindrical portion in a direction of a central axis of the cylindrical portion and attachable to an attachment surface; a protrusion protruding radially outward from the cylindrical portion between the sealing member and the end face of the cylindrical portion in the direction of the central axis.
  • the sound-generating device according to item 1, wherein the cylindrical portion of the support frame includes a plurality of protrusions that protrude radially outward from the cylindrical portion between the seal member and the end surface of the cylindrical portion in the direction of the central axis, and the plurality of protrusions are provided along a circumference of the cylindrical portion. 3.
  • the cylindrical portion of the support frame includes a seal member support portion adjacent to the seal member on the opposite side to the protrusion in the direction of the central axis. 4.
  • the sound-producing device according to item 3, wherein the seal member is held on the tubular portion between the protrusion and the seal member support portion. 5.
  • the sound-producing device according to item 3 or 4, wherein the seal member support portion is continuous around the entire circumference of the cylindrical portion. 6.
  • the sound generating device according to any one of items 1 to 5, wherein the support frame is disposed within the cylindrical portion and includes a diaphragm support that supports the diaphragm. 7.
  • the sound-generating device according to item 6, further comprising a diaphragm cover having a sound output hole and covering the diaphragm, the diaphragm cover being attached to the support frame on the opposite side of the diaphragm from the diaphragm support.
  • the tubular portion of the support frame has an open end having the mounting portion; 8.
  • the sound-producing device according to any one of claims 1 to 7, wherein the mounting surface functions as a lid that closes the open end of the tubular portion when the mounting portion is attached to the mounting surface.
  • a sound generating device according to any one of items 1 to 8, a lamp housing having the mounting surface, The vehicle lamp, wherein the sound generating device is attached to the mounting surface of the lamp housing by the mounting portion. 10.
  • a control device is further provided in the lighting device housing for controlling the sound generating device. 10.
  • the vehicle lamp according to item 9, wherein the sound generating device is disposed outside the lamp housing and below the control device.
  • the seal member is sandwiched between the cylindrical portion of the support frame and the lamp housing, 11.
  • the vehicle lamp according to claim 9 or 10 wherein the lamp housing has a communication hole on the inside of the seal member that communicates an internal space of the lamp housing with an internal space of the tubular portion of the support frame.
  • the communication hole is formed in the lamp housing to allow internal wiring to pass through that connects a control device that controls the sound generation device to the sound generation device.
  • the sound generating device is attached to the lamp housing so as to emit a sound downward.
  • the present invention can be used in sound-producing devices such as speakers.
  • the present invention can also be used in vehicle lighting devices that are equipped with such sound-producing devices and are used in vehicles such as automobiles.
  • Vehicle lamp 12a Mounting surface, 16 Lamp housing, 52 Diaphragm, 60 Support frame, 60a Cylinder, 64 Seal member, 74 Mounting portion, 76 End surface, 78 Protrusion, 80 Seal member support portion.

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Abstract

A speaker (50) comprises: a diaphragm (52); and a support frame (60) that comprises a cylindrical section (60a) to which an annular seal member (64) is attached and that supports the diaphragm (52). The cylindrical section (60a) of the support frame (60) comprises: an attachment section (74) which extends in the direction of the center axis of the cylindrical section (60a) from one end surface of the cylindrical section (60a) and can be attached to an attachment surface (12a); and a protrusion (78) which protrudes, in the direction of the center axis, radially outward from the cylindrical section (60a) between the seal member (64) and the end surface of the cylindrical section (60a).

Description

発音装置および車両用灯具Sound generating device and vehicle lighting fixture
　本発明は、例えばスピーカーなどの発音装置に関する。また、本発明は、そうした発音装置を搭載し、例えば自動車などの車両に用いられる車両用灯具に関する。 The present invention relates to a sound-producing device, such as a speaker. The present invention also relates to a vehicle lamp equipped with such a sound-producing device and used in a vehicle, such as an automobile.
　従来、車両の接近をその車両の周囲に音により通報する車両接近通報装置が知られており、これを車両のヘッドランプに搭載することが提案されている（例えば、特許文献１参照。）。この装置では、ヘッドランプのアウターレンズに電磁振動子が固定され、その振動によりアウターレンズが接近通報音を発する。 　Conventionally, there are known vehicle approach notification devices that notify the surrounding area of an approaching vehicle by sound, and it has been proposed to mount such devices on vehicle headlamps (see, for example, Patent Document 1). In this device, an electromagnetic vibrator is fixed to the outer lens of the headlamp, and the vibrations of the vibrator cause the outer lens to emit an approach notification sound.
特開２０１３－２４１１５６号公報JP 2013-241156 A
　発音装置を取付面に取り付けるにあたり、防水のために発音装置の筐体と取付面との間にＯリングなどのシール部材を挟み込む設計が採用されることがある。シール部材が正規の位置に保持されることにより、所期の防水性能を発揮することができる。しかし、作業者の不注意など何らかの要因で偶発的にシール部材が正規位置から外れてしまうといった、組付作業での不具合が懸念される。この場合、シール部材の位置ずれによる組付不良や防水不良が起こりうる。 When attaching a sound generating device to a mounting surface, a design may be adopted in which a sealing member such as an O-ring is sandwiched between the housing of the sound generating device and the mounting surface for waterproofing purposes. The desired waterproof performance can be achieved by keeping the sealing member in the correct position. However, there is concern that problems may occur during assembly, such as the sealing member accidentally becoming dislodged from its correct position due to some factor, such as carelessness on the part of the worker. In this case, assembly defects and waterproofing problems may occur due to the sealing member being misaligned.
　本発明はこうした状況に鑑みてなされたものであり、そのある態様の例示的な目的のひとつは、シール部材を正しい位置に保持するための構造をもつ発音装置を提供することにある。 The present invention has been made in consideration of these circumstances, and one exemplary purpose of one embodiment of the present invention is to provide a sound-producing device having a structure for holding a sealing member in the correct position.
　上記課題を解決するために、本発明のある態様の発音装置は、振動板と、環状のシール部材が装着される筒部を備え、振動板を支持する支持フレームと、を備える。支持フレームの筒部は、筒部の一方の端面から筒部の中心軸の方向に延長され、取付面に取付可能な取付部と、中心軸の方向においてシール部材と筒部の端面との間で筒部から径方向外向きに突出する突起と、を備える。 In order to solve the above problems, a sound-generating device according to one embodiment of the present invention comprises a diaphragm, a support frame that has a tubular portion to which an annular sealing member is attached and supports the diaphragm. The tubular portion of the support frame extends from one end face of the tubular portion in the direction of the central axis of the tubular portion and comprises an attachment portion that can be attached to an attachment surface, and a protrusion that protrudes radially outward from the tubular portion between the sealing member and the end face of the tubular portion in the direction of the central axis.
　この態様によると、シール部材が装着される支持フレームの筒部に径方向外向きの突起が設けられている。この突起は、シール部材が筒部の端面側へと突起を越えて外れるのを防ぐことに役立つ。シール部材を正しい位置に保持するための構造をもつ発音装置を提供することができる。 According to this embodiment, a radially outward protrusion is provided on the cylindrical portion of the support frame to which the sealing member is attached. This protrusion serves to prevent the sealing member from going beyond the protrusion and coming off toward the end face of the cylindrical portion. It is possible to provide a sound-producing device having a structure for holding the sealing member in the correct position.
　支持フレームの筒部は、中心軸の方向においてシール部材と筒部の端面との間で筒部から径方向外向きに突出する複数の突起を備え、複数の突起は、筒部の周に沿って設けられていてもよい。 The cylindrical portion of the support frame may have a plurality of protrusions that protrude radially outward from the cylindrical portion between the sealing member and the end face of the cylindrical portion in the direction of the central axis, and the plurality of protrusions may be provided along the circumference of the cylindrical portion.
　支持フレームの筒部は、中心軸の方向において突起とは反対側でシール部材に隣接するシール部材支持部を備えてもよい。このようにすれば、シール部材を上述の突起とシール部材支持部との間に保持することができる。 The cylindrical portion of the support frame may include a seal member support portion adjacent to the seal member on the opposite side of the central axis from the protrusion. In this way, the seal member can be held between the protrusion and the seal member support portion.
　シール部材は、突起とシール部材支持部との間で筒部に保持されてもよい。 The seal member may be held in the tubular portion between the protrusion and the seal member support portion.
　シール部材支持部は、筒部の全周にわたり連続していてもよい。 The seal member support portion may be continuous around the entire circumference of the tube portion.
　支持フレームは、筒部内に配置され、振動板を支持する振動板支持体を備えてもよい。 The support frame may include a diaphragm support disposed within the cylindrical portion and supporting the diaphragm.
　発音装置は、音出し穴を有し、振動板を覆う振動板カバーをさらに備えてもよい。振動板カバーは、振動板に対して振動板支持体とは反対側で支持フレームに取り付けられていてもよい。 The sound-producing device may further include a diaphragm cover having a sound output hole and covering the diaphragm. The diaphragm cover may be attached to the support frame on the opposite side of the diaphragm from the diaphragm support.
　支持フレームの筒部は、取付部を有する開放された端部を備え、取付面は、取付部が取付面に取り付けられたとき筒部の開放された端部を閉じる蓋として働いてもよい。 The tubular portion of the support frame may have an open end with a mounting portion, and the mounting surface may act as a lid that closes the open end of the tubular portion when the mounting portion is attached to the mounting surface.
　また、本発明の別の態様によると、車両用灯具は、上述のいずれかの態様の発音装置と、取付面を有する灯具筐体と、を備える。発音装置は、取付部によって灯具筐体の取付面に取り付けられている。 According to another aspect of the present invention, a vehicle lamp includes a sound-producing device according to any one of the above aspects and a lamp housing having a mounting surface. The sound-producing device is attached to the mounting surface of the lamp housing by a mounting portion.
　車両用灯具は、灯具筐体内に配置され、発音装置を制御する制御装置をさらに備えてもよい。発音装置は、灯具筐体の外であって制御装置の下方に配置されていてもよい。 The vehicle lamp may further include a control device disposed within the lamp housing for controlling the sound generating device. The sound generating device may be disposed outside the lamp housing and below the control device.
　シール部材は、支持フレームの筒部と灯具筐体との間に挟み込まれており、灯具筐体は、灯具筐体の内部空間を支持フレームの筒部の内部空間に連通する連通穴をシール部材よりも内側に有してもよい。 The sealing member is sandwiched between the cylindrical portion of the support frame and the lamp housing, and the lamp housing may have a communication hole inside the sealing member that connects the internal space of the lamp housing to the internal space of the cylindrical portion of the support frame.
　連通穴は、発音装置を制御する制御装置を発音装置に接続する内部配線を通すために灯具筐体に形成されていてもよい。 The communication hole may be formed in the lamp housing to allow internal wiring to pass through that connects the control device that controls the sound generating device to the sound generating device.
　発音装置は、下方に向けて音を発するように灯具筐体に取り付けられていてもよい。 The sound generating device may be attached to the lamp housing so that it emits sound downward.
　本発明によれば、シール部材を正しい位置に保持するための構造をもつ発音装置を提供することができる。 The present invention provides a sound-producing device that has a structure for holding the sealing member in the correct position.
実施の形態に係る車両用灯具の概略正面図である。1 is a schematic front view of a vehicle lamp according to an embodiment; 図１に示される車両用灯具のＡ－Ａ線による鉛直断面を示す概略図である。2 is a schematic diagram showing a vertical cross section of the vehicle lamp shown in FIG. 1 taken along line AA. 実施の形態に係る発音装置の概略斜視図である。1 is a schematic perspective view of a sound generation device according to an embodiment; 実施の形態に係る発音装置の鉛直断面を示す概略図である。1 is a schematic diagram showing a vertical cross section of a sound generation device according to an embodiment.
　以下、本発明を好適な実施の形態をもとに図面を参照しながら説明する。実施の形態は、発明を限定するものではなく例示であって、実施の形態に記述されるすべての特徴やその組み合わせは、必ずしも発明の本質的なものであるとは限らない。各図面に示される同一または同等の構成要素、部材、処理には、同一の符号を付するものとし、適宜重複した説明は省略する。また、各図に示す各部の縮尺や形状は、説明を容易にするために便宜的に設定されており、特に言及がない限り限定的に解釈されるものではない。また、本明細書または請求項中に用いられる「第１」、「第２」等の用語は、いかなる順序や重要度を表すものでもなく、ある構成と他の構成とを区別するためのものである。また、各図面において実施の形態を説明する上で重要ではない部材の一部は省略して表示する。 The present invention will be described below with reference to the drawings based on preferred embodiments. The embodiments are illustrative and do not limit the invention, and all features and combinations thereof described in the embodiments are not necessarily essential to the invention. The same or equivalent components, members, and processes shown in each drawing are given the same reference numerals, and duplicated descriptions are omitted as appropriate. The scale and shape of each part shown in each drawing are set for convenience to facilitate explanation, and are not to be interpreted as being limiting unless otherwise specified. Furthermore, the terms "first", "second", etc. used in this specification or claims do not indicate any order or importance, but are intended to distinguish one configuration from another. Furthermore, some members that are not important in explaining the embodiments in each drawing are omitted.
　図１は、実施の形態に係る車両用灯具の概略正面図である。図２は、図１に示される車両用灯具のＡ－Ａ線による鉛直断面を示す概略図である。図３は、実施の形態に係る発音装置の概略斜視図である。図４は、実施の形態に係る発音装置の鉛直断面を示す概略図であり、図３に示される発音装置のＢ－Ｂ線断面に相当する。 FIG. 1 is a schematic front view of a vehicle lamp according to an embodiment. FIG. 2 is a schematic diagram showing a vertical cross section of the vehicle lamp shown in FIG. 1 taken along line A-A. FIG. 3 is a schematic perspective view of a sound-producing device according to an embodiment. FIG. 4 is a schematic diagram showing a vertical cross section of the sound-producing device according to an embodiment, which corresponds to the cross section of line B-B of the sound-producing device shown in FIG. 3.
　車両用灯具１０は、詳細は後述するが、発音装置としてスピーカー５０を備える。スピーカー５０は、車両用灯具１０の例えば底部に取り付けられている。スピーカー５０を利用して、車両用灯具１０には、車両接近通報機能が実装されてもよい。エンジン音を模擬する疑似エンジン音などの通報音をスピーカー５０から発することにより、歩行者や他の車両など車両周囲の対象に自車両の接近を知らせることができる。また、場面に応じて適切な音声をスピーカー５０から発することにより、車両用灯具１０を使用して車両周囲の対象と音声コミュニケーションをとることが可能になる。 The vehicle lamp 10, which will be described in detail later, is equipped with a speaker 50 as a sound generating device. The speaker 50 is attached to, for example, the bottom of the vehicle lamp 10. The speaker 50 may be used to implement a vehicle approach notification function in the vehicle lamp 10. By emitting a notification sound, such as a pseudo engine sound that simulates an engine sound, from the speaker 50, it is possible to notify objects around the vehicle, such as pedestrians and other vehicles, of the approach of the vehicle. In addition, by emitting an appropriate sound depending on the situation from the speaker 50, it becomes possible to use the vehicle lamp 10 to communicate with objects around the vehicle by voice.
　この実施の形態では、車両用灯具１０は、車両前方の左右に配置される一対の前照灯ユニットを有する車両用前照灯装置である。一対の前照灯ユニットは概ね左右対称の構造を有し、実質的に同一の構成であるため、図１には車体前方から見て左側に位置する車両用灯具を示す。よって、図１において左側が車幅方向外側にあたり、右側が車幅方向内側にあたる。 In this embodiment, the vehicle lamp 10 is a vehicle headlamp device having a pair of headlamp units arranged on the left and right sides in front of the vehicle. The pair of headlamp units have a roughly symmetrical structure and are essentially identical in configuration, so FIG. 1 shows the vehicle lamp located on the left side when viewed from the front of the vehicle body. Therefore, in FIG. 1, the left side corresponds to the outer side in the vehicle width direction, and the right side corresponds to the inner side in the vehicle width direction.
　車両用灯具１０は、前面開口１３を有するランプボディ１２と、車両前方側に開口している前面開口１３を覆うようにランプボディ１２の前側に取り付けられた透光カバー１４とを備える。透光カバー１４はしばしば、アウターレンズとも呼ばれる。ランプボディ１２は、車体に取付可能に構成され、透光カバー１４は、ランプボディ１２を介して車体に取り付けられる。ランプボディ１２と透光カバー１４が組み合わされることによって灯具筐体１６が構成され、灯具筐体１６の内部空間が灯室１７として形成されている。ランプボディ１２は、例えば汎用樹脂材料など適宜の合成樹脂材料で形成されている。透光カバー１４は、透光性を有する合成樹脂材料やガラス等、適宜の透光性材料で形成されている。 The vehicle lamp 10 comprises a lamp body 12 having a front opening 13, and a translucent cover 14 attached to the front side of the lamp body 12 so as to cover the front opening 13 that opens to the front side of the vehicle. The translucent cover 14 is often called an outer lens. The lamp body 12 is configured so as to be attachable to the vehicle body, and the translucent cover 14 is attached to the vehicle body via the lamp body 12. The lamp body 12 and the translucent cover 14 are combined to form a lamp housing 16, and the internal space of the lamp housing 16 is formed as a lamp chamber 17. The lamp body 12 is formed of an appropriate synthetic resin material, such as a general-purpose resin material. The translucent cover 14 is formed of an appropriate translucent material, such as a translucent synthetic resin material or glass.
　車両用灯具１０は、灯室１７内に配置される少なくとも１つの光学ユニット１８、例えば前照灯ユニットを備える。つまり光学ユニット１８は前照灯として機能する。一例として、光学ユニット１８は、ロービーム、ハイビーム、および、車両周囲状況に応じて最適な配光パターンを形成する適応的ハイビームの３つの機能のうち少なくとも１つを提供するように構成されていてもよい。 The vehicle lamp 10 includes at least one optical unit 18, such as a headlamp unit, disposed within the lamp chamber 17. In other words, the optical unit 18 functions as a headlamp. As an example, the optical unit 18 may be configured to provide at least one of three functions: low beam, high beam, and adaptive high beam that forms an optimal light distribution pattern depending on the conditions around the vehicle.
　車両用灯具１０は、少なくとも１つの追加の光学ユニット、この例では、第１標識灯ユニット２０ａおよび第２標識灯ユニット２０ｂを備えてもよい。光学ユニット１８と同様に、これら追加のユニットも灯室１７内に配置される。限定的ではない例として、図１に示されるように、第１標識灯ユニット２０ａが光学ユニット１８より上側に配置され、第２標識灯ユニット２０ｂが光学ユニット１８より内側に配置されてもよい。また、更なる光学ユニット、例えば第３標識灯ユニット（図示せず）が光学ユニット１８より下側に配置されてもよい。 The vehicle lamp 10 may include at least one additional optical unit, in this example, a first marker light unit 20a and a second marker light unit 20b. Like the optical unit 18, these additional units are also arranged within the lamp chamber 17. As a non-limiting example, as shown in FIG. 1, the first marker light unit 20a may be arranged above the optical unit 18, and the second marker light unit 20b may be arranged inside the optical unit 18. Also, a further optical unit, for example a third marker light unit (not shown), may be arranged below the optical unit 18.
　車両用灯具１０は、複数の光学ユニットを備えることにより、複数の異なる灯具機能を提供することができる。例えば、第１標識灯ユニット２０ａは、クリアランスランプ及び／またはデイライトランニングランプとして機能する光学ユニットであってもよく、第２標識灯ユニット２０ｂは、フロントターンシグナルランプとして機能する光学ユニットであってもよい。 The vehicle lamp 10 can provide multiple different lamp functions by including multiple optical units. For example, the first marker lamp unit 20a may be an optical unit that functions as a clearance lamp and/or a daytime running lamp, and the second marker lamp unit 20b may be an optical unit that functions as a front turn signal lamp.
　光学ユニット１８は、公知の揺動機構を介してランプボディ１２に支持され、車両前後方向に延びる光軸の方向を鉛直方向及び／または水平方向に調整可能に構成されている。第１標識灯ユニット２０ａおよび第２標識灯ユニット２０ｂは、ランプボディ１２に対して固定的に支持されている。 The optical unit 18 is supported by the lamp body 12 via a known swing mechanism, and is configured so that the direction of the optical axis extending in the fore-and-aft direction of the vehicle can be adjusted vertically and/or horizontally. The first marker light unit 20a and the second marker light unit 20b are fixedly supported by the lamp body 12.
　光学ユニット１８は、図２に示されるように、光源２２と、光源２２が発する光を透光カバー１４に向けるための少なくとも１つの光学部材（例えば、リフレクタ２４、投影レンズ２６）とを備える。また、光学ユニット１８は、放熱部３０を有する発光素子搭載部２８を備える。 2, the optical unit 18 includes a light source 22 and at least one optical member (e.g., a reflector 24, a projection lens 26) for directing the light emitted by the light source 22 toward the translucent cover 14. The optical unit 18 also includes a light-emitting element mounting section 28 having a heat dissipation section 30.
　光源２２は、例えば発光ダイオード（ＬＥＤ）などの半導体発光素子またはその他の発光素子２２ａと、発光素子２２ａが実装された例えばプリント基板などの基板２２ｂとを有する。例示的な配置として、光源２２は、発光素子２２ａの光出射面が車両上方に向けられ、発光素子２２ａの光軸が略車両上下方向に延びた状態で、発光素子搭載部２８に搭載されている。 The light source 22 has a semiconductor light-emitting element 22a, such as a light-emitting diode (LED) or other light-emitting element, and a board 22b, such as a printed circuit board, on which the light-emitting element 22a is mounted. As an exemplary arrangement, the light source 22 is mounted on the light-emitting element mounting section 28 with the light emission surface of the light-emitting element 22a facing upward in the vehicle and the optical axis of the light-emitting element 22a extending in approximately the vertical direction of the vehicle.
　リフレクタ２４は、光源２２の出射光を投影レンズ２６へと反射するように光源２２の上方に配置されている。リフレクタ２４は、光源２２に対向する内面に反射面が形成された反射部材であり、反射面は例えば回転楕円面の一部またはその他適宜の曲面で構成されている。また、投影レンズ２６は、リフレクタ２４からの反射光を灯具前方に投影するように光源２２に対して前方に配置されている。投影レンズ２６は、一例として、前方側表面が凸面で後方側表面が平面の平凸非球面レンズであり、透光性を有する合成樹脂材料やガラス等、適宜の透光性材料で形成される。 The reflector 24 is disposed above the light source 22 so as to reflect the light emitted from the light source 22 towards the projection lens 26. The reflector 24 is a reflective member with a reflective surface formed on the inner surface facing the light source 22, and the reflective surface is formed, for example, of a part of an ellipsoid of revolution or any other suitable curved surface. The projection lens 26 is disposed forward of the light source 22 so as to project the reflected light from the reflector 24 in front of the lamp. As an example, the projection lens 26 is a plano-convex aspheric lens with a convex front surface and a flat rear surface, and is formed from a suitable translucent material such as a translucent synthetic resin material or glass.
　光源２２の発光素子２２ａから発せられた光はリフレクタ２４の反射面で反射され投影レンズ２６に向かう。光は投影レンズ２６および透光カバー１４を通じて車両用灯具１０の外に出射される。 The light emitted from the light-emitting element 22a of the light source 22 is reflected by the reflecting surface of the reflector 24 and directed toward the projection lens 26. The light is emitted outside the vehicle lamp 10 through the projection lens 26 and the translucent cover 14.
　発光素子搭載部２８は、光源２２を支持する支持面を提供し、放熱部３０と一体形成されている。放熱部３０は、発光素子搭載部２８から後方に向けて延びる複数の放熱フィンを有する。各放熱フィンは鉛直面と平行であってもよい。発光素子搭載部２８および放熱部３０は、光源２２が発生する熱を放熱する放熱部材としても機能し、ヒートシンクとも呼ばれる。発光素子搭載部２８および放熱部３０は、例えばアルミニウムまたはアルミニウム合金などの高熱伝導率をもつ金属材料で形成され、例えばダイキャスト法により製造されている。 The light-emitting element mounting section 28 provides a support surface that supports the light source 22, and is formed integrally with the heat dissipation section 30. The heat dissipation section 30 has a number of heat dissipation fins that extend rearward from the light-emitting element mounting section 28. Each heat dissipation fin may be parallel to the vertical plane. The light-emitting element mounting section 28 and the heat dissipation section 30 also function as heat dissipation members that dissipate heat generated by the light source 22, and are also called heat sinks. The light-emitting element mounting section 28 and the heat dissipation section 30 are formed of a metal material with high thermal conductivity, such as aluminum or an aluminum alloy, and are manufactured, for example, by a die casting method.
　また、発光素子搭載部２８は、光学ユニット１８の光学部材を支持する支持部材としても働く。光学部材は、発光素子搭載部２８に直接固定され、またはブラケットなど適宜の取付部材を介して発光素子搭載部２８に取り付けられてもよい。例えば、リフレクタ２４は、例えばねじ止めなど適宜の固定方法により、発光素子搭載部２８に直接固定されてもよい。投影レンズ２６は、取付部材３２を介して発光素子搭載部２８に取り付けられてもよい。 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. For example, 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.
　この実施の形態では、一例として、光学ユニット１８は、いわゆるＰＥＳ（Polyellipsoid System）型とも称されるいわゆるプロジェクタ型のヘッドランプ用の光学ユニットであってもよい。光学ユニット１８は、パラボラ式ヘッドランプや、高速回転するリフレクタを用いて適応的な配光制御を可能にするいわゆるブレードスキャン式のヘッドランプなど、他の形式のヘッドランプ用の光学ユニットであってもよい。 In this embodiment, as an example, the optical unit 18 may be an optical unit for a so-called projector type headlamp, also known as a PES (Polyellipsoid System) type. The optical unit 18 may also be an optical unit for other types of headlamps, such as a parabolic headlamp or a so-called blade scan type headlamp that uses a rapidly rotating reflector to enable adaptive light distribution control.
　車両用灯具１０は、灯具ＥＣＵ（Electronic Control Unit）とも称される、車両用灯具１０を制御する制御装置４０をさらに備える。車両用灯具１０の外に配置され車両全体またはその一部分を統括的に制御する上位コントローラ（車両ＥＣＵとも称される）の制御のもと、制御装置４０は、光学ユニット１８、第１標識灯ユニット２０ａおよび第２標識灯ユニット２０ｂを制御する。制御装置４０は、車両用灯具１０を制御するために必要とされる車両情報を車両ＥＣＵから取得しこの情報に基づいて各光学ユニットの動作（例えば、オンオフ、光量など）を制御する。光学ユニット１８だけでなく、制御装置４０は、車両ＥＣＵからの車両情報に基づいてスピーカー５０の動作（例えば、オンオフ、音量など）を制御してもよい。 The vehicle lamp 10 further includes a control device 40, also referred to as a lamp ECU (Electronic Control Unit), which controls the vehicle lamp 10. Under the control of a higher-level controller (also referred to as a vehicle ECU) that is disposed outside the vehicle lamp 10 and controls the entire vehicle or a part of it, the control device 40 controls the optical unit 18, the first marker light unit 20a, and the second marker light unit 20b. The control device 40 obtains vehicle information required to control the vehicle lamp 10 from the vehicle ECU, and controls the operation of each optical unit (e.g., on/off, light intensity, etc.) based on this information. In addition to the optical unit 18, the control device 40 may also control the operation of the speaker 50 (e.g., on/off, volume, etc.) based on the vehicle information from the vehicle ECU.
　制御装置４０は、灯室１７内であって光学ユニット１８の下方に配置されている。制御装置４０は通例、例えばプリント基板など、平面的な形状をもつ制御回路基板を備える。制御装置４０は、こうした基板を収納した平型の筐体を備えてもよい。そこで、ランプボディ１２は、その底面に、制御装置４０が配置される平面部を有してもよく、制御装置４０は、例えばねじ止めなど適宜の固定方法により、ランプボディ１２の平面部に取り付けられてもよい。 The control device 40 is disposed within the lamp chamber 17 below the optical unit 18. The control device 40 typically comprises a control circuit board having a planar shape, such as a printed circuit board. The control device 40 may comprise a flat housing that houses such a board. Thus, the lamp body 12 may have a planar portion on its bottom surface on which the control device 40 is disposed, and the control device 40 may be attached to the planar portion of the lamp body 12 by an appropriate fixing method, such as screwing.
　なお、制御装置４０は、ランプボディ１２に直接取り付けられるのではなく、灯室１７内に配置されランプボディ１２に支持されるブラケットなど適宜の支持部材を介してランプボディ１２に取り付けられてもよい。こうした支持部材は、光学ユニット１８の下方でランプボディ１２の底面に沿って延在する平面部を有してもよく、この平面部に制御装置４０が取り付けられてもよい。このようにして、制御装置４０が灯室１７内で光学ユニット１８の下方に配置されてもよい。 In addition, the control device 40 may not be attached directly to the lamp body 12, but may be attached to the lamp body 12 via an appropriate support member, such as a bracket that is disposed within the lamp chamber 17 and supported by the lamp body 12. Such a support member may have a flat portion that extends along the bottom surface of the lamp body 12 below the optical unit 18, and the control device 40 may be attached to this flat portion. In this way, the control device 40 may be disposed below the optical unit 18 within the lamp chamber 17.
　制御装置４０には、例えばワイヤーハーネスなどの外部接続配線４２が接続される。外部接続配線４２により、制御装置４０は、車両用灯具１０の外に設けられた例えば車載バッテリなどの電源に接続され、この電源から給電される。また、制御装置４０は、外部接続配線４２により車両ＥＣＵと通信可能に接続される。 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.
　また、制御装置４０を光学ユニット１８と電気接続するワイヤーハーネスなどの第１内部配線４４が設けられている。第１内部配線４４は、光学ユニット１８の光源２２の基板２２ｂに接続される。制御装置４０は、第１内部配線４４を通じて、光源２２に給電するとともに、光源２２を制御する。同様にして、制御装置４０を他の光学ユニット（例えば、第１標識灯ユニット２０ａ、第２標識灯ユニット２０ｂ）と電気接続する内部配線が設けられてもよい。 Furthermore, a first internal wiring 44 such as a wire harness is provided to electrically connect the control device 40 to the optical unit 18. The first internal wiring 44 is connected to the substrate 22b of the light source 22 of the optical unit 18. The control device 40 supplies power to the light source 22 and controls the light source 22 through the first internal wiring 44. Similarly, internal wiring may be provided to electrically connect the control device 40 to other optical units (e.g., the first marker light unit 20a, the second marker light unit 20b).
　制御装置４０をスピーカー５０と電気接続するワイヤーハーネスなどの第２内部配線４６が設けられてもよく、制御装置４０は、第２内部配線４６を通じて、スピーカー５０に給電するとともに、スピーカー５０を制御してもよい。図２に示されるように、ランプボディ１２は、第２内部配線４６を通す配線通し穴４８を有してもよい。配線通し穴４８を通じて灯室１７内の制御装置４０からスピーカー５０へと第２内部配線４６を接続することができる。 A second internal wiring 46 such as a wire harness may be provided to electrically connect the control device 40 to the speaker 50, and the control device 40 may supply power to and control the speaker 50 through the second internal wiring 46. As shown in FIG. 2, the lamp body 12 may have a wiring hole 48 through which the second internal wiring 46 passes. The second internal wiring 46 can be connected from the control device 40 in the lamp chamber 17 to the speaker 50 through the wiring hole 48.
　スピーカー５０は、人にとっての可聴音（典型的には例えば約２０Ｈｚ～約２０ｋＨｚの範囲の周波数をもつ音）を発するように構成される。この可聴音は、車両周囲の対象とのコミュニケーションのための音声であってもよいし、車両周囲の対象に車両の接近を知らせるための通報音として利用されてもよい。通報音は、車両のエンジン音を模擬する疑似エンジン音であってもよく、あるいは、車両接近を知らせる音声メッセージであってもよい。 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.
　スピーカー５０は、下方に向けて音６２を発するように灯具筐体１６に取り付けられていてもよい。車両用灯具１０が組み付けられる車両の設計に依存するが、車両用灯具１０の下方は空所であったり地面と対向していることがしばしばある。スピーカー５０から下方に向けて音６２を発することにより、空所での共鳴や地面での反射等を利用して車両の周囲へと音を効果的に伝搬させることが可能となる。スピーカー５０が、例えば、灯室１７内に収納されたり、灯具筐体１６の背面外側に設置される等、他の部位に配置される場合に比べて、車両の周囲へと音を効果的に伝搬させることが可能となる。 The speaker 50 may be attached to the lamp housing 16 so as to emit sound 62 downward. Although it depends on the design of the vehicle in which the vehicle lamp 10 is installed, the lower part of the vehicle lamp 10 is often an empty space or faces the ground. By emitting sound 62 downward from the speaker 50, it is possible to effectively propagate the sound around the vehicle by utilizing resonance in the empty space and reflection on the ground. Compared to when the speaker 50 is located in another location, for example, stored in the lamp chamber 17 or installed on the outside back surface of the lamp housing 16, it is possible to effectively propagate the sound around the vehicle.
　一例として、図１および図２に示されるように、スピーカー５０は、灯室１７の外であって制御装置４０の下方に配置される。このようにすれば、光学ユニット１８の下方で相応の面積を占めることとなる制御装置４０の配置エリアをスピーカー５０の取付場所として利用できる。制御装置４０は灯室１７内に配置され、スピーカー５０は灯室１７外に配置されるから、互いに干渉することなく両機器を車両用灯具１０に設置できる。 As an example, as shown in Figures 1 and 2, the speaker 50 is placed outside the lamp chamber 17 and below the control device 40. In this way, the area where the control device 40 is placed, which occupies a considerable area below the optical unit 18, can be used as an installation location for the speaker 50. Because the control device 40 is placed inside the lamp chamber 17 and the speaker 50 is placed outside the lamp chamber 17, both devices can be installed in the vehicle lamp 10 without interfering with each other.
　図４に示されるように、スピーカー５０は、ダイアフラムとも呼ばれる振動板５２と、振動板５２を振動させるように構成される振動板駆動部５４とを備える。すなわち、スピーカー５０は、自身に組み込まれた振動板５２を振動板駆動部５４の駆動により振動させることによって音を発するように構成される。 As shown in FIG. 4, the speaker 50 includes a diaphragm 52, also called a diaphragm, and a diaphragm driver 54 configured to vibrate the diaphragm 52. That is, the speaker 50 is configured to emit sound by vibrating the diaphragm 52 incorporated in the speaker 50 through driving of the diaphragm driver 54.
　振動板５２は、中心エリア５２ａおよび外側エリア５２ｂを有し、全体として円錐状の形状をもつ。振動板駆動部５４は、振動板５２の中心エリア５２ａの背後に配置され、コイル５５および磁気回路５６を備える。コイル５５は、振動板５２の中心エリア５２ａと外側エリア５２ｂの境界で、振動板５２に取り付けられている。 The diaphragm 52 has a central area 52a and an outer area 52b, and has an overall conical shape. The diaphragm driver 54 is disposed behind the central area 52a of the diaphragm 52, and includes a coil 55 and a magnetic circuit 56. The coil 55 is attached to the diaphragm 52 at the boundary between the central area 52a and the outer area 52b of the diaphragm 52.
　磁気回路５６は、プレート５６ａ、マグネット５６ｂ、およびヨーク５６ｃを有する。プレート５６ａおよびマグネット５６ｂは、概ね同じ大きさの円板形状を有する。ヨーク５６ｃは、プレート５６ａとマグネット５６ｂを収容できる中心凹部を有する短円筒状の形状を有し、プレート５６ａとヨーク５６ｃの間にマグネット５６ｂが挟持される。プレート５６ａおよびヨーク５６ｃは、例えば鉄などの磁性材料で形成される。 The magnetic circuit 56 has a plate 56a, a magnet 56b, and a yoke 56c. The plate 56a and the magnet 56b have a disk shape of roughly the same size. The yoke 56c has a short cylindrical shape with a central recess that can accommodate the plate 56a and the magnet 56b, and the magnet 56b is sandwiched between the plate 56a and the yoke 56c. The plate 56a and the yoke 56c are made of a magnetic material such as iron.
　磁気回路５６の磁気ギャップとして、プレート５６ａおよびマグネット５６ｂとヨーク５６ｃとの間に周溝が設けられており、コイル５５がこの磁気ギャップに配置される。コイル５５には、図示を省略するが、上述の第２内部配線４６が接続され、それによりコイル５５は制御装置４０から給電されることができる。スピーカー５０を駆動する駆動電流が制御装置４０からコイル５５に供給されると、コイル５５と磁気回路５６との相互作用によりコイル５５とともに振動板５２が振動し、駆動電流に応じた音が生成される。 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. Although not shown, 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. When 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.
　また、スピーカー５０は、振動板５２および振動板駆動部５４を収容するスピーカー５０の筐体として、振動板５２を覆う振動板カバー５８と、振動板５２を支持する支持フレーム６０とを備える。振動板カバー５８および支持フレーム６０は、例えば汎用樹脂材料など適宜の合成樹脂材料、またはその他の材料で形成されてもよい。 The speaker 50 also includes a housing for the speaker 50 that houses the diaphragm 52 and the diaphragm driver 54, which includes a diaphragm cover 58 that covers the diaphragm 52 and a support frame 60 that supports the diaphragm 52. The diaphragm cover 58 and the support frame 60 may be formed from an appropriate synthetic resin material, such as a general-purpose resin material, or other materials.
　振動板カバー５８は、振動板５２に対して振動板駆動部５４とは反対側（つまり振動板５２の前面側）に配置されている。振動板カバー５８は、例えばランス係合、またはねじ止めなど、適宜の固定方法により、支持フレーム６０の外周部に取り付けられる。 The diaphragm cover 58 is disposed on the opposite side of the diaphragm 52 from the diaphragm drive unit 54 (i.e., on the front side of the diaphragm 52). The diaphragm cover 58 is attached to the outer periphery of the support frame 60 by an appropriate fixing method, such as lance engagement or screw fastening.
　振動板カバー５８には、振動板５２から発せられる音をスピーカー５０の外に良好に伝えるために、複数の音出し穴６６が設けられている。これら音出し穴６６のうち少なくとも１つは、振動板５２の中心エリア５２ａの正面に位置し、音出し穴６６のうち他の少なくとも１つは、振動板５２の外側エリア５２ｂの正面に位置してもよい。 The diaphragm cover 58 is provided with a plurality of sound output holes 66 to effectively transmit the sound emitted from the diaphragm 52 to the outside of the speaker 50. At least one of these sound output holes 66 may be located in front of the central area 52a of the diaphragm 52, and at least one other of the sound output holes 66 may be located in front of the outer area 52b of the diaphragm 52.
　音出し穴６６は、振動板カバー５８に形成された貫通穴である。スピーカー５０の正面から見て、音出し穴６６は、例えば、同心円状のスリットであってもよい。あるいは、音出し穴６６は、多数の円孔など小孔の配列など、他のさまざまな形態をとってもよい。 The sound output hole 66 is a through hole formed in the diaphragm cover 58. When viewed from the front of the speaker 50, the sound output hole 66 may be, for example, a concentric slit. Alternatively, the sound output hole 66 may take various other forms, such as an array of multiple circular holes or other small holes.
　支持フレーム６０は、筒部６０ａと振動板支持体６０ｂを備える。筒部６０ａは、概ね円筒状であり、支持フレーム６０の外周部を形成する。振動板支持体６０ｂは、支持フレーム６０の筒部６０ａ内に配置され、振動板５２を支持する。振動板支持体６０ｂはその外周縁で、筒部６０ａの前端（振動板カバー５８側の端部）に接続されている。筒部６０ａと振動板支持体６０ｂは一体形成されていてもよい。 The support frame 60 comprises a tube portion 60a and a diaphragm support 60b. The tube portion 60a is roughly cylindrical and forms the outer periphery of the support frame 60. The diaphragm support 60b is disposed within the tube portion 60a of the support frame 60 and supports the diaphragm 52. The diaphragm support 60b is connected at its outer periphery to the front end of the tube portion 60a (the end on the diaphragm cover 58 side). The tube portion 60a and the diaphragm support 60b may be formed integrally.
　振動板５２の外周部が振動板支持体６０ｂの外周部に取り付けられている。振動板５２は、例えば接着など、適宜の固定方法により、振動板支持体６０ｂの外周部に取り付けられる。一方、振動板支持体６０ｂの中心部に設けられた円形状の開口には、ヨーク５６ｃが嵌め込まれ、それにより、この円形開口に磁気回路５６がコイル５５とともに配置される。 The outer periphery of the diaphragm 52 is attached to the outer periphery of the diaphragm support 60b. The diaphragm 52 is attached to the outer periphery of the diaphragm support 60b by an appropriate fixing method, for example, gluing. Meanwhile, a yoke 56c is fitted into a circular opening provided in the center of the diaphragm support 60b, whereby the magnetic circuit 56 is positioned in this circular opening together with the coil 55.
　支持フレーム６０の筒部６０ａは、振動板支持体６０ｂとは反対側の後端部が開放されている。よって、図３に示されるように、取付前のスピーカー５０は、この開放側から振動板支持体６０ｂや磁気回路５６が見えている。 The cylindrical portion 60a of the support frame 60 is open at the rear end opposite the diaphragm support 60b. Therefore, as shown in FIG. 3, the diaphragm support 60b and magnetic circuit 56 of the speaker 50 before installation can be seen from this open side.
　支持フレーム６０の筒部６０ａは、取付面１２ａに取付可能な複数の取付部７４を備える。取付部７４は、図３に示されるように、振動板５２（および振動板支持体６０ｂ）とは反対側の筒部６０ａの端面７６から筒部６０ａの中心軸の方向（図において上下方向）に延長された部分である。この延長部分の先端は、径方向外向きに屈曲されている。一例として、このような取付部７４は、筒部６０ａの周に沿って等間隔に三箇所に設けられている。なお、支持フレーム６０に設けられる取付部７４の数は任意であり、例えば四箇所以上設けられてもよい。 The cylindrical portion 60a of the support frame 60 has a number of mounting portions 74 that can be attached to the mounting surface 12a. As shown in FIG. 3, the mounting portions 74 are portions that extend from an end face 76 of the cylindrical portion 60a opposite the diaphragm 52 (and the diaphragm support 60b) in the direction of the central axis of the cylindrical portion 60a (the up-down direction in the figure). The tip of this extension is bent radially outward. As an example, such mounting portions 74 are provided at three locations at equal intervals around the circumference of the cylindrical portion 60a. The number of mounting portions 74 provided on the support frame 60 is arbitrary, and may be provided at four or more locations, for example.
　取付面１２ａは、この例では、ランプボディ１２の底面の一部である。スピーカー５０は、取付部７４によって取付面１２ａに取り付けられている。スピーカー５０は、取付面１２ａに例えば回転組付けにより固定されてもよい。この場合、取付面１２ａには取付部７４に対応して取付部７４を受け入れる開口部が形成されている。スピーカー５０を筒部６０ａの中心軸の方向に取付面１２ａに接近させ、各取付部７４を取付面１２ａの対応する開口部に挿入し、スピーカー５０を軸まわりに回転させる。回転とともに取付部７４が開口部で取付面１２ａに係合し、スピーカー５０が取付面１２ａに固定される。スピーカー５０が取付面１２ａに取り付けられるとき、図４に示されるように、取付面１２ａは筒部６０ａの開放端をいわば蓋のように閉じることになる。 In this example, the mounting surface 12a is a part of the bottom surface of the lamp body 12. The speaker 50 is attached to the mounting surface 12a by the mounting portion 74. The speaker 50 may be fixed to the mounting surface 12a, for example, by rotational assembly. In this case, the mounting surface 12a is formed with an opening that corresponds to the mounting portion 74 and receives the mounting portion 74. The speaker 50 is brought close to the mounting surface 12a in the direction of the central axis of the cylindrical portion 60a, and each mounting portion 74 is inserted into the corresponding opening of the mounting surface 12a, and the speaker 50 is rotated around the axis. As the speaker 50 rotates, the mounting portion 74 engages with the mounting surface 12a at the opening, and the speaker 50 is fixed to the mounting surface 12a. When the speaker 50 is attached to the mounting surface 12a, the mounting surface 12a closes the open end of the cylindrical portion 60a like a lid, as shown in FIG. 4.
　支持フレーム６０の筒部６０ａには、例えばＯリングなどの環状のシール部材６４が装着される。図４に示されるように、シール部材６４は、筒部６０ａとランプボディ１２との間に挟み込まれる。これにより、スピーカー５０の防水性が確保され、スピーカー５０の内部への水の侵入が防止される。なお、配線通し穴４８は、スピーカー５０のシール部材６４よりも内側でランプボディ１２に形成されてもよい。それにより、配線通し穴４８を通じた灯室１７内への水の侵入をシール部材６４によって防止できる。 A ring-shaped seal member 64, such as an O-ring, is attached to the cylindrical portion 60a of the support frame 60. As shown in FIG. 4, the seal member 64 is sandwiched between the cylindrical portion 60a and the lamp body 12. This ensures that the speaker 50 is waterproof, and prevents water from entering the interior of 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.
　図３および図４に示されるように、支持フレーム６０の筒部６０ａは、複数の突起７８と、シール部材支持部８０とを備える。なお図３では、突起７８およびシール部材支持部８０を明りょうに示すために、シール部材６４の図示は省略されている。 As shown in Figures 3 and 4, the cylindrical portion 60a of the support frame 60 has a number of protrusions 78 and a seal member support portion 80. Note that in Figure 3, the seal member 64 is omitted in order to clearly show the protrusions 78 and the seal member support portion 80.
　突起７８は、筒部６０ａの中心軸の方向においてシール部材６４と筒部６０ａの端面７６との間で、筒部６０ａから径方向外向きに突出する。この例では、突起７８は、取付部７４と同様に、筒部６０ａの周に沿って等間隔に三箇所に設けられている。突起７８は、周方向に取付部７４と同じ位置に設けられている。 The protrusions 78 protrude radially outward from the tubular portion 60a between the sealing member 64 and the end face 76 of the tubular portion 60a in the direction of the central axis of the tubular portion 60a. In this example, the protrusions 78 are provided at three locations at equal intervals along the circumference of the tubular portion 60a, similar to the mounting portion 74. The protrusions 78 are provided at the same circumferential position as the mounting portion 74.
　なお、突起７８の配置および形状はこの特定の例には限定されない。例えば、突起７８は、取付部７４とは異なる周方向位置に設けられてもよい。突起７８の数は任意であり、例えば四箇所以上設けられてもよい。突起７８は、筒部６０ａの全周にわたり連続していてもよい。 The arrangement and shape of the protrusions 78 are not limited to this particular example. For example, the protrusions 78 may be provided at a circumferential position different from the mounting portion 74. The number of protrusions 78 is arbitrary, and may be provided in four or more locations, for example. The protrusions 78 may be continuous around the entire circumference of the tubular portion 60a.
　シール部材支持部８０は、筒部６０ａの中心軸の方向において突起７８とは反対側でシール部材６４に隣接する。シール部材支持部８０は、筒部６０ａから径方向外向きに突出し、筒部６０ａの全周にわたり連続している。シール部材支持部８０は、支持フレーム６０の筒部６０ａにシール部材６４を装着するとき、シール部材６４の正しい装着位置を示す目印として使用することができる。なお、シール部材支持部８０の配置および形状もこの特定の例には限定されない。例えば、突起７８と同様に、シール部材支持部８０は、筒部６０ａの外周面上で周方向に不連続に複数箇所に設けられてもよい。 The seal member support portion 80 is adjacent to the seal member 64 on the opposite side to the protrusion 78 in the direction of the central axis of the tubular portion 60a. The seal member support portion 80 protrudes radially outward from the tubular portion 60a and is continuous around the entire circumference of the tubular portion 60a. The seal member support portion 80 can be used as a marker to indicate the correct installation position of the seal member 64 when installing the seal member 64 on the tubular portion 60a of the support frame 60. The arrangement and shape of the seal member support portion 80 are not limited to this specific example. For example, similar to the protrusion 78, the seal member support portion 80 may be provided at multiple locations on the outer circumferential surface of the tubular portion 60a in a discontinuous manner in the circumferential direction.
　上述のように、シール部材６４が所期の防水性能を発揮するうえで、シール部材６４は、正しい位置に保持された状態で筒部６０ａとランプボディ１２との間に挟み込まれることが求められる。仮に、スピーカー５０の取付面１２ａへの組付作業において作業者の不注意など何らかの要因で偶発的にシール部材６４が正しい位置から外れてしまったとすると、このシール部材６４の位置ずれによって組付不良や防水不良が起こりうる。 As described above, in order for the sealing member 64 to achieve the desired waterproof performance, it is required that the sealing member 64 be sandwiched between the tubular portion 60a and the lamp body 12 while being held in the correct position. If the sealing member 64 accidentally becomes displaced from the correct position due to some cause, such as carelessness on the part of the worker, during the assembly work on the mounting surface 12a of the speaker 50, this displacement of the sealing member 64 may result in poor assembly or poor waterproofing.
　しかしながら、実施の形態によると、シール部材６４が装着される支持フレーム６０の筒部６０ａに径方向外向きの突起７８が設けられている。この突起７８は、シール部材６４が筒部６０ａの端面７６側へと突起７８を越えて外れるのを防ぐことに役立つ。このように、実施の形態に係るスピーカー５０は、シール部材６４を正しい位置に保持するための構造を有する。したがって、スピーカー５０の取付面１２ａへの組付作業において、シール部材６４の位置ずれが起こりにくくなり、スピーカー５０の組付性が向上する。これは製造コストを低減しうる。加えて、シール部材６４の位置ずれに起因する防水不良の発生を防ぐことができる。 However, according to the embodiment, a radially outward protrusion 78 is provided on the tubular portion 60a of the support frame 60 to which the sealing member 64 is attached. This protrusion 78 serves to prevent the sealing member 64 from going beyond the protrusion 78 and coming off toward the end face 76 of the tubular portion 60a. In this manner, the speaker 50 according to the embodiment has a structure for holding the sealing member 64 in the correct position. Therefore, during the assembly of the speaker 50 to the mounting surface 12a, the sealing member 64 is less likely to become misaligned, improving the assembly of the speaker 50. This can reduce manufacturing costs. In addition, it is possible to prevent poor waterproofing caused by the sealing member 64 being misaligned.
　また、支持フレーム６０の筒部６０ａは、筒部６０ａの中心軸の方向において突起７８とは反対側でシール部材６４に隣接するシール部材支持部８０を備える。そのため、シール部材６４を上述の突起７８とシール部材支持部８０との間に良好に保持することができる。 The cylindrical portion 60a of the support frame 60 also includes a seal member support portion 80 adjacent to the seal member 64 on the opposite side of the protrusion 78 in the direction of the central axis of the cylindrical portion 60a. Therefore, the seal member 64 can be well held between the above-mentioned protrusion 78 and the seal member support portion 80.
　本発明は、上述した実施の形態及び変形例に限定されるものではなく、実施の形態及び変形例を組み合わせたり、当業者の知識に基づいて各種の設計変更などのさらなる変形を加えることも可能であり、そのように組み合わせられ、もしくはさらなる変形が加えられた実施の形態や変形例も本発明の範囲に含まれる。上述した実施の形態や変形例、及び上述した実施の形態や変形例と以下の変形との組合せによって生じる新たな実施の形態は、組み合わされる実施の形態、変形例及びさらなる変形それぞれの効果をあわせもつ。 The present invention is not limited to the above-described embodiments and modifications, but may be combined with the embodiments and modifications, or may include further modifications such as various design changes based on the knowledge of those skilled in the art, and such combined or further modified embodiments and modifications are also included in the scope of the present invention. The above-described embodiments and modifications, and new embodiments resulting from the combination of the above-described embodiments and modifications with the following modifications, combine the effects of each of the combined embodiments, modifications, and further modifications.
　上述の実施の形態は、車両用前照灯装置としての車両用灯具１０を例として説明したが、本発明はこれに限られない。車両用灯具１０は、車両後部に設置される標識灯ユニットなど、他の車両用灯具でもよい。 The above embodiment has been described using the vehicle lamp 10 as an example of a vehicle headlamp device, but the present invention is not limited to this. The vehicle lamp 10 may be another vehicle lamp, such as a marker light unit installed at the rear of the vehicle.
　実施の形態にもとづき、具体的な語句を用いて本発明を説明したが、実施の形態は、本発明の原理、応用の一側面を示しているにすぎず、実施の形態には、請求の範囲に規定された本発明の思想を逸脱しない範囲において、多くの変形例や配置の変更が認められる。 The present invention has been described using specific terms based on the embodiment, but the embodiment merely illustrates one aspect of the principles and applications of the present invention, and many modifications and changes in arrangement are permitted to the embodiment as long as they do not deviate from the concept of the present invention as defined in the claims.
　実施の形態は、番号を付した以下の項のように表現することもできる。
　１．振動板と、
　環状のシール部材が装着される筒部を備え、前記振動板を支持する支持フレームと、を備え、
　前記支持フレームの前記筒部は、
　　前記筒部の一方の端面から前記筒部の中心軸の方向に延長され、取付面に取付可能な取付部と、
　　前記中心軸の方向において前記シール部材と前記筒部の前記端面との間で前記筒部から径方向外向きに突出する突起と、を備えることを特徴とする発音装置。
　２．前記支持フレームの前記筒部は、前記中心軸の方向において前記シール部材と前記筒部の前記端面との間で前記筒部から径方向外向きに突出する複数の突起を備え、前記複数の突起は、前記筒部の周に沿って設けられていることを特徴とする項１に記載の発音装置。
　３．前記支持フレームの前記筒部は、前記中心軸の方向において前記突起とは反対側で前記シール部材に隣接するシール部材支持部を備えることを特徴とする項１または２に記載の発音装置。
　４．前記シール部材は、前記突起と前記シール部材支持部との間で前記筒部に保持されることを特徴とする項３に記載の発音装置。
　５．前記シール部材支持部は、前記筒部の全周にわたり連続していることを特徴とする項３または４に記載の発音装置。
　６．前記支持フレームは、前記筒部内に配置され、前記振動板を支持する振動板支持体を備えることを特徴とする項１から５のいずれかに記載の発音装置。
　７．音出し穴を有し、前記振動板を覆う振動板カバーをさらに備え、前記振動板カバーは、前記振動板に対して前記振動板支持体とは反対側で前記支持フレームに取り付けられていることを特徴とする項６に記載の発音装置。
　８．前記支持フレームの前記筒部は、前記取付部を有する開放された端部を備え、
　前記取付面は、前記取付部が前記取付面に取り付けられたとき前記筒部の前記開放された端部を閉じる蓋として働くことを特徴とする項１から７のいずれかに記載の発音装置。
　９．項１から８のいずれかに記載の発音装置と、
　前記取付面を有する灯具筐体と、を備え、
　前記発音装置は、前記取付部によって前記灯具筐体の前記取付面に取り付けられていることを特徴とする車両用灯具。
　１０．前記灯具筐体内に配置され、前記発音装置を制御する制御装置をさらに備え、
　前記発音装置は、前記灯具筐体の外であって前記制御装置の下方に配置されていることを特徴とする項９に記載の車両用灯具。
　１１．前記シール部材は、前記支持フレームの前記筒部と前記灯具筐体との間に挟み込まれており、
　前記灯具筐体は、前記灯具筐体の内部空間を前記支持フレームの前記筒部の内部空間に連通する連通穴を前記シール部材よりも内側に有することを特徴とする項９または１０に記載の車両用灯具。
　１２．前記連通穴は、前記発音装置を制御する制御装置を前記発音装置に接続する内部配線を通すために前記灯具筐体に形成されていることを特徴とする項１１に記載の車両用灯具。
　１３．前記発音装置は、下方に向けて音を発するように前記灯具筐体に取り付けられていることを特徴とする項９から１２のいずれかに記載の車両用灯具。 The embodiments can also be expressed as the following numbered items:
1. A diaphragm;
a support frame for supporting the diaphragm, the support frame including a cylindrical portion to which an annular seal member is attached,
The cylindrical portion of the support frame is
an attachment portion extending from one end surface of the cylindrical portion in a direction of a central axis of the cylindrical portion and attachable to an attachment surface;
a protrusion protruding radially outward from the cylindrical portion between the sealing member and the end face of the cylindrical portion in the direction of the central axis.
2. The sound-generating device according to item 1, wherein the cylindrical portion of the support frame includes a plurality of protrusions that protrude radially outward from the cylindrical portion between the seal member and the end surface of the cylindrical portion in the direction of the central axis, and the plurality of protrusions are provided along a circumference of the cylindrical portion.
3. The sound-generating device according to item 1 or 2, wherein the cylindrical portion of the support frame includes a seal member support portion adjacent to the seal member on the opposite side to the protrusion in the direction of the central axis.
4. The sound-producing device according to item 3, wherein the seal member is held on the tubular portion between the protrusion and the seal member support portion.
5. The sound-producing device according to item 3 or 4, wherein the seal member support portion is continuous around the entire circumference of the cylindrical portion.
6. The sound generating device according to any one of items 1 to 5, wherein the support frame is disposed within the cylindrical portion and includes a diaphragm support that supports the diaphragm.
7. The sound-generating device according to item 6, further comprising a diaphragm cover having a sound output hole and covering the diaphragm, the diaphragm cover being attached to the support frame on the opposite side of the diaphragm from the diaphragm support.
8. The tubular portion of the support frame has an open end having the mounting portion;
8. The sound-producing device according to any one of claims 1 to 7, wherein the mounting surface functions as a lid that closes the open end of the tubular portion when the mounting portion is attached to the mounting surface.
9. A sound generating device according to any one of items 1 to 8,
a lamp housing having the mounting surface,
The vehicle lamp, wherein the sound generating device is attached to the mounting surface of the lamp housing by the mounting portion.
10. A control device is further provided in the lighting device housing for controlling the sound generating device.
10. The vehicle lamp according to item 9, wherein the sound generating device is disposed outside the lamp housing and below the control device.
11. The seal member is sandwiched between the cylindrical portion of the support frame and the lamp housing,
11. The vehicle lamp according to claim 9 or 10, wherein the lamp housing has a communication hole on the inside of the seal member that communicates an internal space of the lamp housing with an internal space of the tubular portion of the support frame.
12. The vehicle lamp according to item 11, wherein the communication hole is formed in the lamp housing to allow internal wiring to pass through that connects a control device that controls the sound generation device to the sound generation device.
13. The vehicle lamp according to any one of items 9 to 12, wherein the sound generating device is attached to the lamp housing so as to emit a sound downward.
　本発明は、例えばスピーカーなどの発音装置に利用できる。また、本発明は、そうした発音装置を搭載し、例えば自動車などの車両に用いられる車両用灯具に利用できる。 The present invention can be used in sound-producing devices such as speakers. The present invention can also be used in vehicle lighting devices that are equipped with such sound-producing devices and are used in vehicles such as automobiles.
　１０　車両用灯具、　１２ａ　取付面、　１６　灯具筐体、　５２　振動板、　６０　支持フレーム、　６０ａ　筒部、　６４　シール部材、　７４　取付部、　７６　端面、　７８　突起、　８０　シール部材支持部。 10 Vehicle lamp, 12a Mounting surface, 16 Lamp housing, 52 Diaphragm, 60 Support frame, 60a Cylinder, 64 Seal member, 74 Mounting portion, 76 End surface, 78 Protrusion, 80 Seal member support portion.

Claims (13)

  1. 　振動板と、
    　環状のシール部材が装着される筒部を備え、前記振動板を支持する支持フレームと、を備え、
    　前記支持フレームの前記筒部は、
    　　前記筒部の一方の端面から前記筒部の中心軸の方向に延長され、取付面に取付可能な取付部と、
    　　前記中心軸の方向において前記シール部材と前記筒部の前記端面との間で前記筒部から径方向外向きに突出する突起と、を備えることを特徴とする発音装置。     A diaphragm;
    a support frame for supporting the diaphragm, the support frame including a cylindrical portion to which an annular seal member is attached,
    The cylindrical portion of the support frame is
    an attachment portion extending from one end surface of the cylindrical portion in a direction of a central axis of the cylindrical portion and attachable to an attachment surface;
    a protrusion protruding radially outward from the cylindrical portion between the sealing member and the end face of the cylindrical portion in the direction of the central axis.
  2. 　前記支持フレームの前記筒部は、前記中心軸の方向において前記シール部材と前記筒部の前記端面との間で前記筒部から径方向外向きに突出する複数の突起を備え、前記複数の突起は、前記筒部の周に沿って設けられていることを特徴とする請求項１に記載の発音装置。 The sound-generating device according to claim 1, characterized in that the cylindrical portion of the support frame has a plurality of protrusions that protrude radially outward from the cylindrical portion between the sealing member and the end face of the cylindrical portion in the direction of the central axis, and the plurality of protrusions are provided along the circumference of the cylindrical portion.
  3. 　前記支持フレームの前記筒部は、前記中心軸の方向において前記突起とは反対側で前記シール部材に隣接するシール部材支持部を備えることを特徴とする請求項１に記載の発音装置。 The sound-generating device according to claim 1, characterized in that the cylindrical portion of the support frame is provided with a seal member support portion adjacent to the seal member on the opposite side of the protrusion in the direction of the central axis.
  4. 　前記シール部材は、前記突起と前記シール部材支持部との間で前記筒部に保持されることを特徴とする請求項３に記載の発音装置。 The sound-generating device according to claim 3, characterized in that the sealing member is held in the tubular portion between the protrusion and the sealing member support portion.
  5. 　前記シール部材支持部は、前記筒部の全周にわたり連続していることを特徴とする請求項３に記載の発音装置。 The sound-generating device according to claim 3, characterized in that the seal member support portion is continuous around the entire circumference of the cylindrical portion.
  6. 　前記支持フレームは、前記筒部内に配置され、前記振動板を支持する振動板支持体を備えることを特徴とする請求項１に記載の発音装置。 The sound-generating device according to claim 1, characterized in that the support frame is disposed within the cylindrical portion and includes a diaphragm support that supports the diaphragm.
  7. 　音出し穴を有し、前記振動板を覆う振動板カバーをさらに備え、前記振動板カバーは、前記振動板に対して前記振動板支持体とは反対側で前記支持フレームに取り付けられていることを特徴とする請求項６に記載の発音装置。 The sound generating device according to claim 6, further comprising a diaphragm cover having a sound output hole and covering the diaphragm, the diaphragm cover being attached to the support frame on the opposite side of the diaphragm from the diaphragm support.
  8. 　前記支持フレームの前記筒部は、前記取付部を有する開放された端部を備え、
    　前記取付面は、前記取付部が前記取付面に取り付けられたとき前記筒部の前記開放された端部を閉じる蓋として働くことを特徴とする請求項１に記載の発音装置。     the tubular portion of the support frame has an open end having the mounting portion;
    2. The sound-generating device according to claim 1, wherein the mounting surface functions as a lid for closing the open end of the tubular portion when the mounting portion is attached to the mounting surface.
  9. 　請求項１から８のいずれかに記載の発音装置と、
    　前記取付面を有する灯具筐体と、を備え、
    　前記発音装置は、前記取付部によって前記灯具筐体の前記取付面に取り付けられていることを特徴とする車両用灯具。     A sound generating device according to any one of claims 1 to 8,
    a lamp housing having the mounting surface,
    The vehicle lamp, wherein the sound generating device is attached to the mounting surface of the lamp housing by the mounting portion.
  10. 　前記灯具筐体内に配置され、前記発音装置を制御する制御装置をさらに備え、
    　前記発音装置は、前記灯具筐体の外であって前記制御装置の下方に配置されていることを特徴とする請求項９に記載の車両用灯具。     A control device is further provided in the lighting device housing to control the sound generating device.
    10. The vehicular lamp according to claim 9, wherein the sound generating device is disposed outside the lamp housing and below the control device.
  11. 　前記シール部材は、前記支持フレームの前記筒部と前記灯具筐体との間に挟み込まれており、
    　前記灯具筐体は、前記灯具筐体の内部空間を前記支持フレームの前記筒部の内部空間に連通する連通穴を前記シール部材よりも内側に有することを特徴とする請求項９に記載の車両用灯具。     The seal member is sandwiched between the cylindrical portion of the support frame and the lamp housing,
    The vehicle lamp according to claim 9, wherein the lamp housing has a communication hole, the communication hole communicating an internal space of the lamp housing with an internal space of the tubular portion of the support frame, located inside the seal member.
  12. 　前記連通穴は、前記発音装置を制御する制御装置を前記発音装置に接続する内部配線を通すために前記灯具筐体に形成されていることを特徴とする請求項１１に記載の車両用灯具。 The vehicle lamp according to claim 11, characterized in that the communication hole is formed in the lamp housing to allow internal wiring to pass through that connects a control device that controls the sound generating device to the sound generating device.
  13. 　前記発音装置は、下方に向けて音を発するように前記灯具筐体に取り付けられていることを特徴とする請求項９に記載の車両用灯具。 The vehicle lamp according to claim 9, characterized in that the sound generating device is attached to the lamp housing so as to emit sound downward.
PCT/JP2023/043072 2022-12-13 2023-12-01 Sound producing device and vehicular lamp WO2024128027A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022198882 2022-12-13
JP2022-198882 2022-12-13

Publications (1)

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WO2024128027A1 true WO2024128027A1 (en) 2024-06-20

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