JPH10136481A - Signaling tone part structure of electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a signaling tone part structure for an electronic device which reduces the number of small parts which are arranged around a case even when the packaging density of an electronic device like a pager that has a signaling tone part, etc., is increased and also makes cost that is needed for metallic mold inexpensive. SOLUTION: Because this device has a housing which accommodates a sounding body 1 and an emitter 8, a sound emitting hole 7 which is made on the housing, a light guide member 9 which guides light emitted by the emitter 8 to the outside the housing and a sound guiding part 9b which has a front air chamber 2 that faces the sound emitting plane of the body 1, communicates with the hole 7 and increases sound pressure and forms the part 9b in the member 9, it is possible to reduce the number of parts and to perform high density packaging. Also, in processing the housing, there is no need to slide a metallic mode inside the housing to form the sound guide part in the housing like a conventional, way, and a housing is molded by a simple and inexpensive metallic mold (core metallic mold and external sliding metallic mold).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound emitting portion of an electronic device in a small electronic device such as a pager having a sounding body for notifying of an incoming call signal.

[0002]

2. Description of the Related Art A conventional portable electronic device, for example, a pager or the like, has a speaker which is a sounding body for notifying an incoming call signal of its own in a main body, and a sound emission hole is provided in a housing. Is the most. In addition, the pager requires a very loud notification sound due to its function. If the body itself is considerably thick, the speaker itself has a large output.

FIG. 9 is a side sectional view showing an example of the structure of a sound section of such a conventional pager. FIG. 10 shows a speaker housed in the housing of the conventional pager of FIG. It is a perspective view explaining the board | substrate to mount.

In the figure, 51 is a speaker, 52 is a sponge ring inside which serves as a front air chamber for increasing sound pressure, 53 is a substrate on which the speaker is mounted, 54 is a nonwoven fabric,
5 is a lower case constituting a housing, 56 is the lower case 55
An upper case 57 which forms a housing together with the housing 57 is a sound emission hole.
That is, as shown in FIG.
, The housing is formed from the lower case 55 and the upper case 56 provided with the sound emission holes 57, and the cylindrical speaker 51 shown in FIG. 11 is mounted inside the housing. The substrate 53 is accommodated.

The sponge ring 52 having a cylindrical shape and the same diameter as the speaker 51 is attached to the speaker 51 so as to face the sound generation surface, and a non-woven fabric 54 is attached to an opening surface of the attached sponge ring 52. Is being worn. And a board 53 on which the speaker 51 is mounted.
Is mounted inside the housing in a state where the nonwoven fabric 54 attached to the speaker unit 51 to be mounted is pressed around the sound emission hole 57 of the lower case 55.

As described above, in the structure of the sounding section in the ordinary pager 50, the space (front air chamber) for producing sound is sealed by interposing the sponge ring 52 between the speaker 51 and the housing. The sound emitted from the speaker 51 is resonated, and the sound pressure emitted from the sound output hole 57 is increased to increase the notification sound of the pager.

By the way, for example, a small electronic device represented by a pager may be mounted with a smaller speaker as the main body becomes smaller and the packaging density becomes higher.
When a small speaker is mounted due to such a restriction inside the casing of the pager, the sponge ring forming a front air chamber for increasing sound pressure as shown in FIGS. Can not be used because it can not be secured,
The following structure shown in FIG. 11 and FIG. 12 forms a front air chamber for increasing the sound pressure of the sound report unit. FIG. 11 is a partial cross-sectional view illustrating a conventional pager in a case where two substrates provided integrally with ribs forming a front air chamber for increasing sound pressure are housed in a housing;
FIG. 12 is a perspective view of a board on which a miniaturized speaker accommodated in the pager of FIG. 11 is mounted. In this conventional pager, a light emitting diode (hereinafter referred to as LED = Ligh
t Emitting Diode) and other light-emitting elements.

In FIGS. 11 and 12, 61 is a speaker, 63 is a substrate, 64 is a non-woven fabric, 65 is a lower case, 6
6 is an upper case, 67 is a sound emission hole, 68 is an LED, 69 is
LED cover for guiding light emitted from the LED to the outside, 70 is L
Reference numeral 71 denotes a front air chamber and 77 cutout holes. The casing of the pager 60 is, as shown in the figure,
The case is constituted by the lower case 65 and the upper case 66, and a notch hole 77 is formed in the housing at a joint portion of the two cases 65 and 66.
The lower case 65 is formed with the sound emission hole 67 below, and a rib 76 forming the front air chamber 71 is provided on an inner surface of the housing of the sound emission hole 67. The sound emission hole 67 opening at the center is located at the center, and is formed so as to surround the periphery thereof and protrude inward of the housing. The rib 76 has a rectangular tube shape.

The notch 77 is provided with the LED cover 6.
9, the LED cover 69 is made of an acrylic resin or a polycarbonate resin containing a diffusing agent for diffusing light, has optical transparency, and is housed in the housing. LE
It guides the light of D68 to the outside and conceals the inside of the housing. Further, inside the housing, the L
Below the board 681 on which the ED 68 is mounted, a board 63 for mounting the miniaturized speaker 61 having the non-woven fabric 64 adhered to the sound generating surface 61a as shown in FIG. The sound generating surface of the speaker 61 to which the nonwoven fabric 64 is adhered is placed in close contact with the rectangular tube-shaped rib 76 formed by the above. That is, the sounding surface of the speaker 61 and the rectangular tube-shaped rib 76 are closely attached to each other through the nonwoven fabric 64 inside the housing, so that the speaker 6
A front air chamber 71 is formed between the housing 1 and the housing (the lower case 65 in the conventional example) to resonate sound from a speaker and increase sound pressure.

[0010]

However, in such a conventional sound emitting portion structure of the pager 60 of a high-density mounting having a miniaturized speaker 61 or the like, the inner side surface of the lower case 65 has a rectangular tube. The ribs 76 in the shape
However, since the lower case 65 having such a structure is formed from the relationship between the cavity and the core of the mold, as shown in FIG.
A core mold 92 that is moved upward in the direction of the lower case 65 (in the direction of arrow C) and pulled out, and a mold for forming the sound emission holes 67 and the ribs 76 in the lower case 65 are shown on the paper. It must be formed in the right direction, that is, inside the lower case 65 by a process with an inner slide die 93 that is pulled out in the direction of arrow D. That is, when processing the housing, if the above-mentioned structure of the mold is used, the mold must be slid inside the housing, and in order to manufacture such an inner slide mold 12, As is well known, not only is it very expensive, but also in the above mold structure,
In the area where the slide mold 12 moves inward, that is, on the inner lower surface of the lower case where the inner slide mold 12 slides, positioning bosses and ribs such as the substrate 63, and further a part escape part are provided. Since such a concave portion cannot be provided, there is a problem that the degree of freedom of design is restricted and high-density mounting cannot be performed. Further, as a solution to the above problem, it is possible to separately attach the components forming the front air chamber, but in this case, there is a problem that the number of components increases.

An object of the present invention is to reduce the number of small components arranged around the case and to reduce the cost of the mold even when the mounting density of an electronic device such as a pager having a sounding unit is increased. An object of the present invention is to provide a sounding unit structure of an electronic device. In addition, an object of the present invention is to provide a sound emitting unit structure of an electronic device having a configuration in which the above sound emitting unit structure can be easily assembled.

[0012]

According to the first aspect of the present invention,
A sound emitting unit structure of an electronic device comprising: a housing accommodating a sounding body; a sound emitting hole provided in the housing; and a sound guiding unit that communicates the sounding body with the sound emitting hole. , The sound guide section comprises:
It is characterized in that it is formed integrally with an internal component disposed in the housing and a member interposed between the internal component and the housing.

According to the first aspect of the present invention, the sound guide communicating with the sounding body and the housing sound emission hole is provided inside the housing, and the internal component is provided inside the housing. Therefore, the number of components can be reduced and high-density mounting can be achieved. Also, in the processing of the housing, there is no need to slide the mold inside the housing to form the sound guide portion in the housing as in the related art, and the housing can be formed by a simple mold. Therefore, since a housing having a front air chamber can be formed without using an inner slide mold that requires a production cost as in the related art, the cost of a mold used for forming the housing can be reduced. . Further, when providing mounting bosses or ribs for positioning a substrate housed inside the housing, or when mounting density such as mounting an electronic component on the substrate is increased, the housing serves as a relief portion for the electronic component. The recess can be installed without any restrictions.

More specifically, the housing is an electronic device case represented by a pager, and the internal components are various electronic components mounted on a circuit board of the pager.
Or a circuit board. A member interposed between the internal component and the housing is, for example, an internal component
Is a light guide member for guiding light emitted from this element to the outside of the housing, and is made of an acrylic resin, a polycarbonate resin, or the like. Further, the shape of the sound emitting hole may be any shape, and may be a circular shape, a square shape, or an elliptical shape. Further, the light guide member for guiding the light of the light emitting body to the outside of the housing may be provided so as to fit into a notch hole provided in the housing. In addition, the notch hole may be provided near the sound emission hole.

According to a second aspect of the present invention, in the sound emitting section structure of the electronic apparatus according to the first aspect, the internal component is a light emitting body, and the sound guiding section is provided between the light emitting body and the housing. It is characterized by being formed integrally with a light guide member interposed therebetween and guiding light emitted by the light emitter to the outside of the housing.

According to the second aspect of the present invention, the sound guide portion guides light emitted from the light emitter to the outside of the housing, which is interposed between the light emitter and the housing. Since it is formed integrally with the member, the same operation and effect as those of the first aspect can be obtained, for example, the number of parts can be reduced and high-density mounting can be achieved.

According to a third aspect of the present invention, in the sound emitting section structure of the electronic device according to the first aspect, the internal component has a drive circuit for driving the sounding body present in the housing. And a storage member interposed between the circuit board and the housing to store the sounding body, and a conductive member electrically connecting the circuit board and the sounding body. It is characterized in that it is integrally formed.

According to the third aspect of the invention, in addition to the effect of the first aspect, the sounding body can be fixed to the housing by the housing member for housing the sounding body. By simply connecting the circuit board having a drive circuit for driving the sounding body to the conductive portion of the housing member, the circuit board is electrically connected to the sounding body housed in the housing member. Become. Therefore, when mounting the sounding body on the circuit board as in the related art, there is no need to solder both terminals, and the work efficiency is improved. Further, for example, a notch groove portion into which the circuit board can be inserted is provided in the storage member, and when the circuit board is inserted into the notch groove portion, the terminal of the sounding body drive circuit of the circuit board is connected to the conductive portion. If it is configured to be in contact, the storage member can fix the circuit board as well as fix the sounding body to the housing.

According to a fourth aspect of the present invention, in the electronic device according to any one of the first to third aspects, the internal component provided in the housing, the internal component and the The member interposed between the housing and the housing is made of an elastic member that elastically supports the sounding body.

According to the fourth aspect of the present invention, the internal components provided in the housing and the member interposed between the internal components and the housing elastically move the sounding body. Since the elastic member is supported, even if there is an external impact, the impact is absorbed by the action of the elastic member. Therefore, it is possible to prevent the sounding body housed in the housing from being damaged due to an external impact, or to prevent the pattern of the connected circuit board from being peeled off.

Specifically, it is preferable that the storage member is formed by using rubber as the elastic member and using conductive rubber for the conductive portion.

According to a fifth aspect of the present invention, in the sound emitting portion structure of the electronic device according to any one of the first to fourth aspects, the sound guide portion is provided with a front end for increasing an output sound pressure of the sounding body. It is characterized in that an air chamber is formed.

According to the fifth aspect of the present invention, since the front air chamber for increasing the output sound pressure of the sounding body is formed in the sound guide section, the front air chamber for increasing the resonance effect of the sounding body is formed. The structure can be formed integrally with an internal component provided in the housing and a member interposed between the internal component and the housing.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a sounding unit structure of an electronic apparatus according to the present invention will be described in detail with reference to FIGS.

<First Embodiment> FIG. 1 is a side sectional view of a sound emitting portion structure of a housing for explaining an embodiment to which the present invention is applied, and FIG. It is the perspective view (a) seen from the front side of the light guide member attached to the body, and the perspective view (b) seen from the back side.

First, the configuration will be described. 1 is a speaker,
2 is a front air chamber, 3 is a board on which the speaker 1 is mounted,
4 is a nonwoven fabric, 5 is a lower case, 6 is an upper case, 7 is a sound emission hole provided in the lower case 5, 8 is an LED, 9 is a light guide member, and 9a is formed in the light guide member 9. Protrusion, 9b
Is a sound guide formed on the light guide member 9 and having the front air chamber 2, 9c is a plate-like portion connecting the projecting portion 9a and the light guide 9b, 20 is an electronic component, 15 Is a notch hole, 8
Reference numeral 3 denotes a board on which the LEDs 8 are mounted.

FIG. 1 shows a pager 1 to which the present invention is applied.
0, the housing comprises a lower case 5 and an upper case 6, and a notch hole 15 is formed in a joint portion of the upper and lower cases 5, 6.
However, the lower case 5 has the sound emission hole 7 formed adjacent to the cutout hole 15. In addition, a concave portion 5 a is provided on the inner lower surface of the lower case 5.

A board 83 on which the LED 8 is mounted is provided inside the housing composed of the two cases 5 and 6.
The speaker 3 in which the nonwoven fabric 4 is adhered to the sound generating surface 1a and the substrate 3 on which the electronic components 20 such as ICs are mounted.
And are housed.

The projecting portion 9a of the light guide member 9 for guiding the light emitted from the LED 8 to the outside of the housing is fitted between the notch hole 15 and the LED 8. Between the sound output hole 7 and the speaker 1, there is provided a front air chamber 2 which is in close contact with the sound emitting surface 1 a of the speaker 1 and communicates with the sound output hole 7 to increase the sound pressure. A sound portion 9b is provided, and the sound guide portion 9b is formed on the light guide member 9.

Here, referring to FIG.
Will be described in detail. The light guide member 9 includes 2
Similar to the LED cover 69 used in the pager 60 on which the miniaturized speaker 1 shown in the second conventional example is mounted, it is made of an acrylic resin or a polycarbonate resin containing a diffusing agent for diffusing light, and is optically transmitted. It has the property of nature. As shown in a perspective view (a) viewed from the front side and a perspective view (b) viewed from the back side in FIG. 2, the light guide member 9 is provided on an upper half of the plate-like portion 9c on the front side. The protruding portion 9a having the same diameter as the inner diameter of the notch hole 15 and guiding the light of the LED 8 to the outside of the housing by being fitted into the notch hole 15 is provided. The plate-like portion 9c
A front air chamber 2 having a width of about 1 mm is formed in the lower half of the rear side of the rear side to guide sound emission from the speaker 1 to the outside of the housing and resonate the sound to increase the sound pressure. Have
A rectangular cylindrical sound guide 9b protruding in the rear direction is formed, and the sound guide 9b is formed in communication with an opening 9d opened on the front side of the plate-like portion 9c. I have.

When the projecting portion 9a is fitted in the cutout hole 15, the plate-like portion 9c comes into close contact with the housing on the front side. With the above configuration, the LE
D8 and the speaker 1 are provided at positions facing the notch 15 and the sound emission hole 7 via the light guide member 9 fitted and attached to the notch 15 respectively. Has become.

Next, the operation and effect will be described based on the configuration of the sound emitting unit structure of the electronic apparatus according to the embodiment of the present invention.

When the notch hole 15 is formed by combining the upper and lower cases 5 and 6, and the projection 9a of the light guide member 9 is fitted and attached to the notch hole 15, the light guide member 9 is formed. The sound guide portion 9b communicates with a sound emission hole 7 provided below the cutout hole 15 in the housing, and surrounds the sound emission hole 7 at a center thereof. It is attached in a state where it protrudes toward one side. When the speaker 1 is closely attached to the sound guide portion 9b via the nonwoven fabric 4, the front air chamber 2 inside the sound guide portion 9b is sealed, and the sound of the speaker 1 resonates, and Sound pressure can be secured. That is, merely by attaching the light guide member 9 to the housing, the light emitted from the LED 8 housed in the housing can be guided to the outside of the housing, and can be housed inside the housing. The sound emitted from the speaker 1 as the sounding body can be resonated to increase the sound pressure and emit the sound to the outside of the housing.

Therefore, since the two cases 5 and 6 forming the housing have the above-described structure, the number of components provided in the housing can be reduced and high-density mounting can be achieved.

In processing the housing, as shown in FIG. 3, a mold for forming the lower case 5 includes an outer slide mold 91 which slides outward (in the direction of arrow B),
It can be molded with a core mold 90 that moves upward inside the case, that is, removes the mold in the opening direction of the lower case 5 (direction of arrow A). That is, the inner slide mold (9 in FIG.
Since the case can be formed without using 3), the cost of the mold can be reduced. Further, the boss or rib for positioning the substrate accommodated in the housing can be installed without restriction. Further, even when the electronic component is arranged on the lower surface of the substrate 3 as in the present embodiment, a relief portion for the electronic component 20 mounted on the lower case,
For example, the concave portion 5a can be provided similarly.

In this embodiment, the number of substrates accommodated in the pager housing is two. However, the present invention is not limited to this. One substrate is provided, and light emitting elements such as LEDs are provided on both surfaces thereof.
A speaker may be mounted.

Although the present invention is a small electronic device, particularly a pager, the present invention is not limited to this, and may be another electronic device having a sound section such as a radio or a tape recorder. In the above embodiment, the sound guide is formed on the light guide member, and the light guide is attached to the housing, so that the sound guide is also attached to the housing, and the light guide is attached to the housing. Although the front air chamber of the sound section is configured to communicate with the sound emission hole, the sound guide section may be formed on a member attached to the inside of the housing other than the light guide member. .

<Second Embodiment> Next, a second embodiment of the present invention will be described with reference to FIGS. In this embodiment, a description will be given of a structure in which the sound guide portion is integrally formed with a member attached to the inside of the housing other than the light guide member, here, a housing member that houses a speaker and fixes the speaker to the housing. I do.

FIG. 4 is a sectional view of a pager for explaining a second embodiment of a sound emitting unit structure of an electronic apparatus to which the present invention is applied, and FIG. 5 is a perspective view of a holder unit which is a storage member of FIG. ,
FIG. 6 is a perspective view illustrating a state in which the speaker and the circuit board are connected via the holder unit of FIG.

First, the configuration will be described. 11 is a speaker as a sounding body, 21 is a pager for explaining a sound emitting unit structure of the electronic apparatus according to the second embodiment, 22 is a front air chamber,
23 is a circuit board having a drive circuit for driving the speaker 11, 24 is a nonwoven fabric, 25 is a lower case, 26 is an upper case, 27 is a sound emission hole, 28 is a cutout hole, 29 is a sound guide member,
Reference numeral 0 denotes a holder portion that is a storage member that stores the speaker 11 and fixes it to the housing, 33 is a conductive portion made of conductive rubber, and 34 is an insulating portion made of insulating rubber.

As shown in FIG. 4, this pager 21
Is the first housing containing the sounding body and the luminous body described above.
The case of the pager 21 is composed of an upper case 26 and a lower case 25, and the upper case 26 has a cutout hole 28 therein. A sound emission hole 27 is formed in a joint portion between the upper and lower cases 25 and 26, and a substrate 83 on which a light emitting body (LED) 8 similar to that of the first embodiment is mounted, and a speaker 11 inside. And the speaker 1
1 and a circuit board 23 having a sounding circuit (a driving circuit for driving the sounding body).

The notch hole 28 is fitted with a projection 29a of the light guide member 29 for guiding the light emitted by the LED 8 to the outside of the housing, and the sound emission hole 27 located below the notch hole 28 is located below the notch hole 28.
, The sound guide portion 29b of the light guide member 29 is provided in a connected state. For details of the configuration of the light guide member 29, except for the opening 9d of the light guide member 9 in the above-described embodiment, the sound guide hole 1 serving as a sound guide passage is provided.
Except for the formation of No. 2, it has substantially the same configuration, and a description thereof will be omitted.

The inner surface of the sound guide portion 29 b having the sound guide hole 12 formed in the light guide member 29 and the rib 25 protruding from the inner lower surface of the lower case 25.
a, a holder unit 3 housing the speaker 11
0 is pinched, and the speaker 11 and the sound guide hole 12 are in communication with each other.

The holder portion 30 is made of an elastic member for elastically supporting the speaker 11 to be housed. As shown in FIGS. 4 and 5, a conductive portion 33 made of conductive rubber and an insulating portion made of insulating rubber are provided. 34,
The shape is a rectangular parallelepiped box shape having an opening 30c formed by opening one side surface. That is, as shown in FIG. 5, the holder portion 30 in this embodiment divides a plane portion 30a of a box-shaped main body, which is a main body portion, into two symmetrical portions in the direction of the opening 30c from the front portion 30b. So that the insulating portion 34 formed by interposing the insulating rubber
And right and left portions thereof are constituted by conductive portions 33, 33 formed of conductive rubber.

The speaker 11 housed in the holder 30 is
The non-woven fabric 24, which is the sound generating surface, is provided so as to face outward from the opening 30c, and is fitted to the housing near the sound generating surface. A front air chamber 22 for increasing the sound pressure is formed in the opening 30c in front of the sound generating surface, which is the nonwoven fabric 24, and the upper and lower surfaces inside the opening 30c, that is, the front air chamber 22 At the upper and lower wall portions of the inner wall, there are provided mounting steps 32 for preventing the stored speaker 11 from coming off. The mounting step portion 32 prevents the speaker installed inside from coming off and fixes it. As shown in FIG. 6, the speaker 11 has a pair of connection terminal portions 11 on its upper surface.
a, 11a, and connection terminals 11 of these speakers.
a and 11a indicate that the speaker 11 is connected to the holder 30.
When housed inside, the conductive portion 3 of the holder portion 30
It is configured to be in contact with the inner upper surface which is 3,33. That is, when the speaker is housed in the holder section 30, the insulating section 34 formed of insulating rubber of the holder section is connected to the pair of connection terminal sections 1 of the speaker.
The conductive portions 33 are located between 1a and 11a, and are insulated from each other.

The configuration of the conductive portions 33, 33 and the insulating portion 34 in the holder portion 30 is the same as that of the holder portion 3.
Connection terminal 1 of the speaker 11 housed in the speaker 0
Any configuration is possible as long as it is configured to make contact with each of 1a and 11a. For example, a pair of connection terminal portions 11a and 11a of speaker 11 in FIG. If the speaker 11 is provided before and after the upper surface of the speaker 11, when the speaker 11 is stored in the holder 30, the insulating rubber 34 is provided between the terminals of the pair of connection terminals 11 a and 1 a. The insulating rubber is interposed so as to divide the plane 30a into two parts in a direction perpendicular to the opening direction so that the interposed part is made of each conductive rubber.

Although the speaker 11 is fitted in the holder, any configuration is possible as long as the terminal and the conductive part of the speaker 11 are fixed in contact with each other. You may. On the back surface 30b of the holder portion 30, a notch groove portion 31 cut in a U-shape in the longitudinal direction is provided between the centers of the short sides of the back surface so as to be orthogonal to the insulating rubber 34. One end of the circuit board 23 is fitted into the notch groove 31. It should be noted that the width and depth of the cutout groove 31 are, of course, configured corresponding to the circuit board 23 to be fitted.

The circuit board 23 has pads 23a, 23a serving as speaker terminals on one end of the upper surface thereof.
The pads 23a, 23a are fitted to the holder portions 30 so as to be in contact with the separated conductive portions 33, 33 of the holder portion 30, respectively, in such a manner as to be divided into insulating portions of the insulating portion 34. Preferably, the circuit board 23 is configured to be mounted on the rib 25a protruding from the lower case.

Next, the function and effect of the second embodiment according to the present invention will be described based on the structure of the sound notification unit structure of the electronic device.

The sound emitting part structure of the electronic apparatus according to the second embodiment described above has a structure in which the sound guide part 29b of the light guide member 29 attached to the housing is provided with the holder part 30 in which the speaker 11 is housed. The opening 30c is connected so as to be in close contact with the sound guide hole 12 of the sound guide 29 and the front air chamber 22 of the holder 30, and the lower part of the rear part 30b of the holder 30 is connected to the lower part. The rib 25a of the case is disposed so as to be in contact with the surface on the sound emission hole side, and the rib 25a is attached to the rear surface 30.
b. Further, in the sound emitting unit structure of the electronic device, the holder unit 30
The notch groove portion 31 provided on the back surface portion 30b of
The circuit board 23 is inserted, and the terminals 23a, 23a of the sound circuit and the terminals 11a, 11a of the speaker 11 corresponding to the corresponding conductive parts 33,
An electrical connection is made via a connection 33.

According to the sound emitting unit structure of the electronic apparatus of the second embodiment configured as described above, since the front air chamber 22 is provided in front of the sound generation surface 24 of the speaker 11, the front air chamber 22 is provided.
The front air chamber 22 resonates the sound emitted from the speaker 11, which is the sounding body, housed inside the housing to increase the sound pressure, and emits sound from the sound emission hole 27 to the outside of the housing. In addition, as in the case of the first embodiment, the case can be formed without using an inner slide die (93 in FIG. 13) which requires a high manufacturing cost in the processing of the housing, similarly to the effect of the first embodiment. Therefore, the cost of the mold can be reduced, and the boss or rib for positioning the substrate housed in the housing can be installed without restriction.

Further, according to the sound emitting unit structure of the electronic apparatus according to the second embodiment having the above-described structure, as shown in FIG. The mounting step portion 32 formed in 30a
The circuit board 23 having the sound signal circuit is inserted into a notch groove 31 provided on the back surface 30b of the holder 30 and the pads 23a, 23 of the circuit board 23 are inserted.
a is connected to the corresponding conductive portions 33, 33 and brought into contact with each other, and the two become electrically conductive. Therefore, when the speaker 11 and the circuit board 23 are connected as in the related art, When conducting, the time and effort of soldering the terminal portions 11a and 11a of the speaker 11 and the pads 23a and 23a of the circuit board 23 are eliminated, and work efficiency is improved. The holder 3
Since the circuit board 23 is inserted and fitted into the 0 notch groove 31, the circuit board is also fixed.

Further, the speaker 11 is housed and fixed to the housing by the rubber holder 30 made of an elastic member, and the circuit board 23 is also fixed. However, the impact is absorbed by the rubber, and the speaker 11
Of the circuit board 23 or peeling of the circuit board 23 from the pattern can be prevented.

In the sound emitting portion structure of the electronic device according to the first and second embodiments of the present invention, the display window for the light emitting element and the sound emitting hole are provided on the same side surface. The present invention is not limited to this, and the light emitting element display windows may be formed on different surfaces.

<Modification> Next, a modification of the second embodiment of the sound notification unit structure of the electronic apparatus according to the present invention will be described with reference to FIGS.

The modification of the second embodiment is an example in which a cylindrical speaker is used as a sounding body.

FIG. 7 is a side sectional view for explaining a modification of the second embodiment of the sound emitting unit structure of the electronic apparatus according to the present invention, and FIG. 8 is a view of the speaker provided in the housing in FIG. It is a perspective view explaining a peripheral structure.

First, the configuration will be described. 39 is a holder which is the same storage member as described above, 40 is a pager for explaining a modification of the second embodiment of the sound emitting unit structure of the electronic device according to the present invention, and 41 is the holder 39 Are housed in a cylindrical speaker, 42 is a front air chamber formed in the opening of the holder section, 43 and 44 are conductive sections made of conductive rubber forming the holder section 39, Reference numeral 45 denotes an insulating portion made of insulating rubber, 45 denotes a nonwoven fabric adhered to the opening surface of the holder portion 39, 46 denotes a circuit board having a sound circuit, 47 denotes a lower case, 48 denotes an upper case, and 49 denotes sound emission Hole.

As shown in FIG. 7, a housing of a pager 40 according to a modification of the second embodiment has a sound emission hole 49.
The lower case 47 and the upper case 48 provided with
The holder 39 in which the cylindrical speaker 41 is housed is provided therein. The holder portion 39 is sandwiched by a side wall 47a provided with a sound emission hole of the lower case 47 and a rib 47b projecting from an inner bottom surface of the lower case inside the housing. Is attached via the nonwoven fabric 45.

As shown in FIGS. 7 and 8, the holder 39 has a rectangular parallelepiped box shape, and is provided with the speaker 41 fitted therein. The holder 39 is made of conductive rubber and insulating rubber, similarly to the holder 30 described above. As shown in FIG. 8, the holder 39 has an opening at a front portion 39 a which is one side surface of the holder 39, and emits the sound emitted from the speaker 41 to the outside. A front air chamber 42 for increasing the output sound pressure is formed. According to the above configuration, that is, the front air chamber 42 has the thickness of the front portion 39a, and the front air chamber 42 can increase the output sound pressure of the speaker 41 and increase the resonance effect of the speaker. .

The front portion 39a and the side portions 39b, 39b, 39b, 39b of the holder portion 39 are formed as insulating portions 44 by insulating rubber. On the rear portion 39c, conductive portions are provided on the left and right of the rear portion 39c. 43, 43
Are provided apart from each other along opposing sides, and both conductive portions 4 are so arranged as to be insulated from each other.
An insulating portion is formed between the third and the third 43 with an insulating rubber 44a interposed therebetween. The conductive portions 43, 43 are provided so as to come into contact with connection terminal portions (plus and minus) 41a, 41a of the speaker housed in the holder, respectively. Further, the holder 39 has cutout grooves 44b, which are inserted into a circuit board on which the speakers 41 are mounted, on three sides on both side surfaces 39b, 39b and a rear surface 39c.

As shown in FIG. 7, the fitting portion of the circuit board 46 to be fitted into the cutout groove portion 44b has the terminal portions 46a, 46a on its upper surface in parallel along the fitting end. The circuit board is fitted to the holder 39 so that the terminal portions 46a and 46a are in contact with the conductive portions, respectively, and the speaker is mounted on the circuit board. .

According to a modification of the second embodiment,
The same effect as in the above-described second embodiment, that is, the output sound pressure of the speaker 41 as the sounding body housed in the housing is increased by the front air chamber 42, and the speaker 41 emits the sound. In addition to being able to resonate the sound and emit the sound to the outside of the housing, in processing the housing, similarly to the embodiment, an inner slide die (FIG. 8) which requires a conventional die manufacturing cost is used. Since the case can be molded without using the method 93), the cost of the mold can be reduced, and the bosses and ribs for positioning the substrate housed in the housing can be installed without restriction. .

Further, according to the sound emitting part structure of the electronic device of the modified example of the second embodiment having the above structure, as shown in FIG.
A circuit board having a sound signal circuit in a notch groove portion 44b provided on the back surface portion 39c of the holder portion 39, the engagement step portion 42a formed on the inner wall of the front air chamber 42 being fitted thereinto. The pads 46a, 46a of the circuit board 46 are inserted into the corresponding conductive portions 43, 4 respectively.
3 and are brought into contact with each other and become electrically conductive, so that when the speaker 41 and the circuit board 46 are electrically connected to each other as in the related art, the speaker 41
Terminal portions 41a, 41a and the pad 4 of the circuit board 46.
There is no need to solder the 6a and 46a, and the work efficiency is improved. Further, the holder 39
Circuit board 46 having the above-mentioned sounding circuit in notch groove portion 44b
Is inserted and fitted, so that the circuit board 46 is also fixed.

Further, the speaker 41 is housed and fixed to the housing by the rubber holder 39 made of an elastic member, and the circuit board 46 is also fixed. However, the impact is absorbed by the rubber, and the speaker 41 due to the impact is absorbed.
Of the circuit board 46, pattern peeling of the circuit board 46, and the like can be prevented.

In the second embodiment and its modifications, the holder as the storage member is made of rubber. However, the present invention is not limited to this. May be comprised by the resin which has.

In the sound emitting portion structure of the electronic device according to the second embodiment and its modification, since the holder portion is formed of conductive rubber and insulating rubber, the contact portion with the circuit board and the holder portion are formed. It is preferable that the outer surface of the holder except for the contact portion with the speaker terminal is covered with an insulating member such as an insulating sheet.

Further, in the second embodiment and its modifications, in order to prevent the speaker housed in the holder from coming off, the mounting step formed in the holder is housed. It may be formed in any way as long as it locks the speaker and fixes it inside, for example, it is provided around the inner wall of the front air chamber, provided at one place, May be provided at a plurality of locations.

In each of the embodiments, the casing is rectangular, but the present invention is not limited to this, and any processing may be performed. In addition, the sound emission hole is provided in the lower case forming the housing, but is not limited thereto, and may be provided in a portion other than the lower case such as the upper case.

In each of the above embodiments, the shape of the sound emission hole and the cutout hole is rectangular. However, the shape is not limited to this, and may be a shape other than a rectangle, such as a circle or an ellipse.

In each of the above embodiments, the luminous body is LE
Although D was set, it is not limited to this, and a light emitter other than the LED may be used. Although the present invention is a small electronic device, particularly a pager, the present invention is not limited to this, and it goes without saying that other electronic devices such as a radio, a tape recorder and the like having a sound emitting unit may be used. In addition, it is needless to say that specific detailed structures and the like can be appropriately changed.

[0072]

According to the first aspect of the present invention, it is possible to reduce the number of components and mount the components at a high density. Also,
Also in the processing of the housing, there is no need to slide a mold inside the housing to form the sound guide portion in the housing, as in the related art, and the housing can be formed by a simple mold. The cost of the mold used for molding can be reduced.
That is, an inexpensive product having a high mounting density can be provided. Further, when providing mounting bosses or ribs for positioning a substrate housed inside the housing, or when mounting density such as mounting an electronic component on the substrate is increased, the housing serves as a relief portion for the electronic component. The recess can be installed without any restrictions.

According to the second aspect of the present invention, the sound guide portion guides the light emitted from the light emitter to the outside of the housing, which is interposed between the light emitter and the housing. Since it is formed integrally with the member, the same effect as that of the first aspect is obtained.

According to the third aspect of the invention, in addition to the effects of the first aspect, the sounding body can be fixed to the housing by the housing member for housing the sounding body. By simply connecting the circuit board having a drive circuit for driving the sounding body to the conductive portion of the housing member, the circuit board is electrically connected to the sounding body housed in the housing member. Become. Therefore, when mounting the sounding body on the circuit board as in the related art, there is no need to solder both terminals, and the work efficiency is improved.

According to the fourth aspect of the present invention, the internal components provided in the housing and a member interposed between the internal components and the housing elastically move the sounding body. Since the support member is made of an elastic member, even if there is an external shock, the shock is absorbed by the action of the elastic member, and the sound member contained in the housing is damaged or connected by the shock. Pattern peeling of the circuit board can be prevented.

According to the fifth aspect of the present invention, since the front air chamber for increasing the output sound pressure of the sounding body is formed in the sound guide section, it is possible to increase the resonance effect of the sounding body. The structure can be formed integrally with an internal component provided in the housing and a member interposed between the internal component and the housing.

[Brief description of the drawings]

FIG. 1 is a side cross-sectional view of a sound emitting unit structure of a housing illustrating an embodiment to which the present invention is applied.

FIGS. 2A and 2B are a perspective view (a) as viewed from the front side and a perspective view (b) as viewed from the back side of the light guide member attached to the housing in FIG.

FIG. 3 is a partial cross-sectional view showing a movement when the mold is not slid inward.

FIG. 4 is a diagram illustrating a second example of the sound emitting unit structure of the electronic apparatus to which the present invention is applied.
FIG. 2 is a cross-sectional view of a pager for explaining an embodiment.

FIG. 5 is a perspective view of the holder section of FIG. 4;

FIG. 6 is a perspective view illustrating a state in which the speaker and the circuit board are connected via the holder of FIG. 4;

FIG. 7 is a side sectional view illustrating a modification of the second embodiment of the sound notification unit structure of the electronic apparatus according to the present invention.

FIG. 8 is a perspective view illustrating a peripheral structure of a speaker provided in a housing in FIG.

FIG. 9 is a side sectional view showing an example of the structure of a sounding section of a conventional pager.

FIG. 10 is a perspective view illustrating a board on which a speaker accommodated in the housing of the conventional pager of FIG. 9 is mounted.

FIG. 11 is a partial cross-sectional view illustrating a conventional pager in which ribs forming a front air chamber for increasing sound pressure are integrally provided on a housing.

FIG. 12 is a perspective view of a board on which a miniaturized speaker accommodated in the pager of FIG. 11 is mounted.

FIG. 13 is a partial cross-sectional view for explaining the movement of a mold when molding the lower case forming the housing in FIG. 11;

[Explanation of symbols]

 1,11,41 Speaker 2,32,42 Front air chamber 3,23,46,83 Substrate 4 Non-woven fabric 5,25,47 Lower case 6,26,48 Upper case 7,27,49 Sound emission hole 8 LED 9, 29 sound guide member 9a projecting portion 9b sound guide portion 9c plate portion 20 electronic component 15, 28, 49 cutout hole 30, 39 holder portion 33, 43 conductive portion 34, 44, 44a insulating portion 90 core die 91 inner slide die Type

Claims (5)

[Claims] An electronic device comprising: a housing accommodating a sounding body; a sound emission hole provided in the housing; and a sound guide unit for communicating the sounding body with the sound emission hole. Part structure, wherein the sound guide unit is an internal component disposed in the housing,
A sound emitting unit structure for an electronic device, wherein the sound emitting unit structure is formed integrally with a member interposed between the internal component and the housing. 2. The internal component is a light emitter, and the sound guide unit guides light emitted from the light emitter, which is interposed between the light emitter and the housing, to the outside of the housing. The sound emitting unit structure of an electronic device according to claim 1, wherein the sound emitting unit is formed integrally with the optical member. 3. The circuit component according to claim 1, wherein the internal component is a circuit board having a drive circuit for driving the sounding body present in the housing, and the sound guide section is provided between the circuit board and the housing. The electronic device according to claim 1, wherein the electronic device is formed integrally with a housing member that interposes the sounding body and has a conductive portion that electrically connects the circuit board and the sounding body. The alarm sound structure. 4. An internal component disposed in the housing,
The member interposed between this internal component and the housing is
4. The sound emitting unit structure of an electronic device according to claim 1, wherein the sound emitting unit is made of an elastic member that elastically supports the sounding body. 5. The electronic device according to claim 1, wherein a front air chamber for increasing an output sound pressure of the sounding body is formed in the sound guide unit. Alarm structure.