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JP2008252610

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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
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DESCRIPTION JP2008252610
An object of the present invention is to prevent a shadow of a lead wire from appearing on a
diaphragm in a speaker which emits light of an LED from behind to a translucent diaphragm to
emit light. A lead wire 35 drawn out from a positive terminal 13a and a negative terminal 13b is
fixed to a frame 3 by a clamp 37 between multicolor LEDs 25 and does not pass through the
front of the multicolor LED 25. It has reached the outside. The light emitted from the multicolor
LED 25 is irradiated to the back surface of the diaphragm 8 and the edge 7 without being
blocked by the frame 3, the damper 34, and the lead wires 35 and also by other members.
[Selected figure] Figure 3
スピーカ
[0001]
The invention belongs to the technical field of loudspeakers.
[0002]
There is a technique of mounting a light emitter on a speaker to obtain an electric decoration
effect.
For example, Japanese Patent Application Laid-Open No. 2001-95074 (Patent Document 1) has a
speaker which irradiates light emitted from a light source to a center cap mounted at the center
of a diaphragm and diffuses the same by a satin provided on the inner surface. It is disclosed. JP
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2001-197579 A
[0003]
However, the visual effect is limited because the speaker described in Patent Document 1 emits
light only at the center. The applicant of the present application has already proposed a speaker
capable of illuminating the entire surface of the diaphragm (Japanese Patent Application No.
2006-83028).
[0004]
However, a cone-shaped diaphragm made of translucent synthetic resin is provided, a plurality of
LEDs are disposed behind the diaphragm and outside the outer periphery of the damper, and the
light of the LEDs is irradiated to the diaphragm. When the diaphragm is made to emit light, the
lead wire connecting the audio signal input terminal and the voice coil crosses between the
diaphragm and the LED, causing a problem that the shadow of the lead wire is reflected on the
diaphragm .
[0005]
A speaker according to claim 1, comprising: a cone-shaped diaphragm made of a translucent
synthetic resin, a bobbin connected to the small diameter end of the diaphragm, and a voice coil
wound around the bobbin A speaker comprising: a damper for supporting the bobbin so as to be
able to vibrate in the axial direction of the bobbin; a lead connecting an audio signal input
terminal and the voice coil; and a plurality of LEDs disposed behind the diaphragm. The LED is
mounted on an annular wiring substrate and disposed behind the diaphragm and outside the
outer periphery of the damper, and the lead wire is at a position between the LEDs and the frame
of the speaker. It is characterized by being fixed to
[0006]
The plurality of LEDs are mounted, for example, along a circle on an annular wiring substrate and
are disposed behind the diaphragm and outside the outer periphery of the damper, so that the
light emitted from those LEDs is The light is incident on the back surface, transmitted through
the diaphragm, and emitted from the front surface of the diaphragm.
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Therefore, a wide range (approximately the entire range) of the diaphragm can be used for the
decoration effect by light emission.
[0007]
The diaphragm may be made of a translucent synthetic resin, for example, a sheet of
polycarbonate, polyethylene, acrylic, or PET.
The light transmitting property may be transparent or semi-transparent. If it is transparent, the
diaphragm emits light brightly, and if it is translucent, it emits soft light. In addition, the
translucent synthetic resin may be colored with a dye or a pigment.
[0008]
In addition, it is preferable that the diaphragm be provided with a light diffusion pattern formed
by minute convexes or concaves. Then, the light emitted from the LED is diffused and emitted by
the light diffusion pattern provided on the diaphragm, so that almost the entire area of the
diaphragm can be effectively used for the decoration effect by light emission.
[0009]
As a light diffusion pattern, for example, a large number of linear ridges, a pattern arranged in
parallel, a large number of linear ridges, a pattern arranged in a grid, and a ridge in a diagonal
direction are further added to this grid pattern Illustrate a pattern that repeats a basic pattern
configured by arranging concentric patterns such as circles, ellipses, polygons (triangles, squares,
hexagons, etc.) and other figures (star, diamond, etc.) concentrically. Can. The same pattern may
be formed by a recessed line. In addition, patterns other than those exemplified here may be
used.
[0010]
When the light diffusion pattern is formed by the ridges or grooves, the linear density (the
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number per unit length along the width direction of the ridges or grooves) is 1/1 mm or more (1
mm or less). preferable. For example, it can be made to 2/1 mm (0.5 mm pitch), 4/1 mm (0.25
mm pitch), 8/1 mm or more (0.125 mm pitch), 10/1 mm (0.1 mm pitch), etc. The linear density
may be further increased.
[0011]
Such a light diffusion pattern can be provided by pressing on a translucent synthetic resin sheet.
The light diffusion pattern may be provided only on one side of the diaphragm or may be
provided on both sides of the diaphragm. If a good acoustic effect is expected, it may be provided
on only one side, and if it is provided on both sides, the optical characteristics will be improved.
[0012]
When the light diffusion patterns are provided on both sides of the diaphragm, the light diffusion
patterns may be the same on both sides, but if the respective patterns are made different, the
aspect of diffusion becomes rich. The arrangement of the LEDs may be arranged on an annular
wiring substrate, and the interval is not particularly limited, but it is preferable to make the
intervals equal.
[0013]
Note that the number of wiring boards may not be one, that is, a plurality of wiring boards may
be combined to form an annular shape. Alternatively, it may be partially broken (so-called Cshaped). Further, since it is sufficient to have an annular portion, for example, an overhanging
portion for mounting a connector may be attached.
[0014]
Then, since the lead wire is fixed to the frame of the speaker at a position between the LEDs
mounted on the wiring board, the wire path of the lead wire is not radiated from the LED and
does not cross the optical path of light toward the diaphragm It can be in position. This prevents
the shadow of the lead from being reflected on the diaphragm and prevents such a shadow from
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impairing the appearance.
[0015]
The configuration and means for securing the lead wire to the frame are not limited. For example,
the lead wire may be fixed by adhesion or adhesion, or a hook or a clamp may be provided on the
frame and secured.
[0016]
The speaker according to claim 2 is characterized in that the wiring board is attached to the back
of the frame with the LEDs being positioned in an opening provided in the frame at one location
for each of the LEDs. Since it is a speaker according to claim 1, light from the LED is emitted from
the opening provided in the frame.
Therefore, the lead wire may be fixed to the frame between the opening and the opening.
[0017]
The term "behind the frame" to which the wiring board is attached is the side on which the
magnets and the like that make up the magnetic circuit are disposed, and the diaphragm is
located on the front side of the frame.
[0018]
Next, embodiments of the present invention will be described by way of examples of the present
invention.
It is needless to say that the present invention is not limited to the following examples and the
like, and can be variously implemented without departing from the scope of the present
invention. Embodiment As shown in FIG. 1, the speaker 1 of this embodiment is configured to
support each part by a frame 3 which is a skeleton. Further, the front end portion of the frame 3
is a substantially square flange 4, and the speaker 1 can be fixed using the hole 5 provided in the
flange 4. The speaker 1 of this embodiment is attached to, for example, a front frame of a game
machine and used, but the application is not limited to this and can be used widely.
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[0019]
A ring 6 is attached to the front surface of the flange 4, and the flange 4 and the ring 6 sandwich
the peripheral portion of the edge 7. The edge 7 is joined to the outer periphery of the front end
of the cone-shaped diaphragm 8, and the frame 3 supports the front end of the diaphragm 8 via
the edge 7.
[0020]
The diaphragm 8 is a translucent synthetic resin, for example, a sheet of polycarbonate,
polyethylene, acrylic, or PET molded into a cone shape, and one side or both sides thereof have
light as illustrated in FIGS. A diffusion pattern is provided. The edge 7 is also made of the same
material as the diaphragm 8 and is similarly provided with a light diffusion pattern.
[0021]
The light diffusion pattern shown in FIG. 4 has a structure in which linear ridges are arranged in
a vertical, horizontal or diagonal lattice, and the light diffusion pattern shown in FIG. 5 has a
structure in which linear ridges are arranged in parallel, The light diffusion pattern shown in 6
has a structure in which a basic pattern in which ridges are arranged in a large and small
concentric manner is repeated. Further, FIG. 7 shows an example of the cross-sectional shape of
the ridges constituting the light diffusion pattern, which can be a triangle (a, b), a trapezoid (c, d),
an arc (e) or the like.
[0022]
Column-shaped magnet attachment portions 11 are provided at four places on the body portion
3 a of the frame 3, and a terrace-like substrate support portion 12 is provided. Further, a
terminal portion 13 having a positive terminal 13a and a negative terminal 13b, both of which
are audio signal input terminals, is fixed to the outer surface of the body portion 3a.
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[0023]
A magnetic circuit portion 15 is attached to the magnet attachment portion 11 by a screw 16.
Specifically, the magnetic circuit unit 15 is constituted by an annular magnet 17, a center pole
18 and a ring yoke 19, as shown in FIGS. 3 (b) and 3 (c). A magnetic gap is formed between the
center pole 18 and the center pole 18. In addition, four fixing pieces 21 are continuously
provided on the outer periphery of the ring yoke 19 so as to protrude. The above-mentioned
screw 16 passes through the fixing piece 21 and is screwed to the magnet mounting portion 11,
whereby the magnetic circuit portion 15 is mounted to the magnet mounting portion 11, that is,
the frame 3.
[0024]
The substrate support 12 is used to attach the printed wiring board 23. As shown in FIG. 3A, the
printed wiring board 23 includes an annular LED placement portion 23a and a rectangular
connector placement portion 23b. In the LED placement portion 23a, eight multicolor LEDs 25
are equally spaced. The connector 26 is mounted at the end of the connector placement portion
23b.
[0025]
The printed wiring board 23 is disposed so as to be sandwiched between the magnetic circuit
unit 15 and the frame 3, and is screwed to the substrate support 12 and the rear wall 3 b of the
frame 3 by screws 27. That is, after the printed wiring board 23 is screwed to the frame 3, the
magnetic circuit unit 15 is screwed to the frame 3. The magnetic circuit portion 15 can be
detached from the frame 3 by removing the screw 16, and the printed wiring board 23 can be
removed from the frame 3 by removing the screw 27 thereafter. That is, the speaker 1 can be
disassembled into the frame 3, the printed wiring board 23, and the magnetic circuit unit 15.
[0026]
The multicolor LED 25 is mounted on the front surface of the printed wiring board 23 (the side
facing the diaphragm 8), but the rear wall 3b of the frame 3 is provided with an opening 28
corresponding to each multicolor LED 25. The multicolor LEDs 25 are respectively inserted
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inside the openings 28. Therefore, the light emitted from the multicolor LED 25 is not blocked by
the back wall 3 b of the frame 3.
[0027]
On the other hand, inside the frame 3, the bobbin 31 is disposed substantially at the center of the
speaker 1. The tip end of the bobbin 31 penetrates the small diameter end of the diaphragm 8
and is connected to the diaphragm 8 at this portion. Further, a center cap 32 for covering the
opening of the bobbin 31 protruding to the inside of the diaphragm 8 is attached to the
diaphragm 8.
[0028]
The rear end of the bobbin 31 is externally fitted to the tip of the center pole 18, but there is a
clearance between the inner periphery of the bobbin 31 and the outer periphery of the center
pole 18, and the bobbin 31 fits on the center pole 18. It is not worn.
[0029]
Also, although the voice coil 33 is wound around the bobbin 31 at a position to be within the
above-mentioned magnetic gap, there is a clearance between the voice coil 33 and the inner
periphery of the ring yoke 19 as well. ) Is not constrained by the ring yoke 19.
[0030]
In the central portion of the bobbin 31, the inner peripheral portion of the damper 34 is
connected to the outer periphery of the bobbin 31, and the outer peripheral portion 34a of the
damper 34 is fixed to the rear wall 3b of the frame 3.
The above-mentioned opening 28 (that is, the multicolor LED 25) is located outside the outer
periphery of the damper 34, and the damper 34 does not block the light from the multicolor LED
25 toward the diaphragm 8.
[0031]
That is, the bobbin 31 is supported by the frame 3 (rear wall 3b) via the damper 34, and is not in
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contact with the center pole 18 and the ring yoke 19, and the bobbin 31 is displaceable in the
axial direction.
[0032]
With such a structure, when a voice signal current is supplied to the voice coil 33, the bobbin 31
on which the voice coil 33 is wound vibrates in the axial direction, and the diaphragm 8 is
vibrated accordingly to generate voice. it can.
[0033]
By the way, in order to feed the voice signal current to the voice coil 33, it is necessary to
electrically connect the voice signal input terminal (+ terminal 13a and-terminal 13b) to which
the voice signal current is supplied from the outside and the voice coil 33 is there.
As shown in FIG. 3A, lead wires 35 for that purpose are drawn out one by one from each of the
positive terminal 13a and the negative terminal 13b and tied to the positive and negative
terminals of the voice coil 33.
[0034]
The lead wires 35 are fixed to the rear wall 3b of the frame 3 at positions (clamping portions 37)
between the multicolor LEDs 25 as shown in FIGS. 3 (a) and 3 (c). The outer surface of the
bobbin 31 is reached without passing through the front of the color LED 25).
In the present embodiment, the lead wire 35 is bonded to the back wall 3b in the clamp portion
37. For example, a hook or a clamp may be provided on the back wall 3b and the lead wire 35
may be fixed thereto.
[0035]
Therefore, the light emitted from the multicolor LED 25 is not blocked by the frame 3 (especially
the back wall 3 b), the damper 34, the lead wire 35, nor by other members. It is irradiated to the
back.
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[0036]
Therefore, when the multicolor LEDs 25 are turned on, light emitted from them is diffused and
emitted by the light diffusion pattern provided on the diaphragm 8 and the edge 7.
Therefore, almost the entire area of the diaphragm 8 and the edge 7 can be used for the
decoration effect by light emission.
[0037]
Further, since the diaphragm 8 and the edge 7 are formed by molding a plastic sheet provided
with the light diffusion pattern, distortion occurs in the light diffusion pattern along with the
formation.
Due to this distortion, for example, the flat sheet provided with the light diffusion pattern was
irradiated with light, for example, the luminance was changed at the central portion (bobbin 31
side) and the outer peripheral portion (edge 7 side) of the diaphragm 8. The patterns of diffusion
are more varied than sometimes.
[0038]
The light emitted from the multicolor LED 25 is diffused when it is transmitted through the
diaphragm 8, so that the entire surface of the diaphragm 8 can be illuminated even if the number
of multicolor LEDs 25 is smaller than the light emitting area of the diaphragm 8. .
[0039]
In addition, it is possible to change the diffusion effect by making the multicolor LEDs 25
arranged in an annular shape sequentially emit light cyclically, to change color, etc., so that a
wide light effect is possible.
The multicolor LED 25 is disposed along the outer periphery of the damper 34 supporting the
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bobbin 31. However, the portion of the rear wall 3b which is the outside of the damper 34 (the
portion provided with the opening 28) is a conventional speaker Since this is a portion which has
not been used, it is not necessary to create a new space for mounting the multicolor LED 25
(printed wiring board 23) on the speaker 1, and the speaker 1 is not upsized.
[0040]
Moreover, since the lead wire 35 is fixed to the frame 3 by the clamp portion 37 located between
the multicolor LEDs 25 mounted on the printed wiring board 23 (between the openings 28
provided in the frame 3), the lead wire is The 35 wiring paths can be positioned so as not to
cross the light path of light emitted from the multicolor LED 25 and directed to the diaphragm 8.
As a result, the shadow of the lead wire 35 is not reflected on the diaphragm 8, and such shadow
can be prevented from impairing the appearance.
[0041]
Furthermore, the speaker 1 can be disassembled into the frame 3, the printed wiring board 23,
and the magnetic circuit portion 15 in a structure in which the printed wiring board 23 and the
frame 3, and the magnetic circuit portion 15 and the frame 3 are screwed together. Removal and
reassembly of the printed wiring board 23 are possible. Therefore, for example, when a defect
such as failure of any of the multicolor LEDs 25 occurs in the printed wiring board 23, the
printed wiring board 23 can be easily removed or repaired or replaced.
[0042]
The top view (a), front view (b), right side view (c), and bottom view (d) of the speaker of an
example. The upper left perspective view (a), the upper right perspective view (b), the lower left
perspective view (c) and the lower right perspective view (d) of the speaker according to the
embodiment. The top view (a) which described a part of speaker of an example with a hidden line
(b), BB sectional view (b), and EE sectional view (c). The illustration (1) of the light-diffusion
pattern provided in the diaphragm by the speaker of an Example. The illustration (2) of the lightdiffusion pattern provided in the diaphragm by the speaker of an Example. The illustration (3) of
the light-diffusion pattern provided in the diaphragm by the speaker of an Example.
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Explanation of sign
[0043]
DESCRIPTION OF SYMBOLS 1 ... Speaker, 3 ... Frame, 8 ... Diaphragm, 13 ... Terminal part, 13a ...
+ terminal, 13b ...-terminal, 15 ... Magnetic circuit part, 23 ... · · Printed wiring board, 25 · · · multicolor LED, 28 · · · · · · · · · · · · · · · · · · · · · · · · · · · voice coil, 34 · · · damper, 35 · · · lead wire 37 Clamp
part.
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