Speaker device, and image forming apparatus

Abstract

To provide a speaker device and an image forming apparatus that can amplify the sound emitted from a speaker, compared with a case where the speaker is attached to a wooden enclosure.SOLUTION: A speaker device 150 comprises: a speaker 172 that emits a sound; and an enclosure 182 that is formed of resin material, and has an attachment plate 184 to which the speaker 172 is attached and in which a plurality of through holes is formed. The attachment plate 184 is formed with an opening 184a through which a part of the speaker 172 is inserted into the enclosure 182. The attachment plate 184 is provided, around the opening 184a, with a contact part 184c that is in contact with the outer periphery of the speaker 172. An end of the contact part 184c is partially separated in a circumferential direction by notching a part of an opening edge 185 of the opening 184a by a notch part 184e. The contact part 184c formed on the attachment plate 184 is a projection in contact with a rear face of the speaker 172.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a speaker device and an image forming device. [Background technology]

[0002] Patent Document 1 describes a speaker device including a speaker cabinet having a wooden box body and a speaker unit. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-117179 A Summary of the Invention [Problem to be solved by the invention]

[0004] A speaker device includes a substrate on which elements for generating an audio signal to be transmitted to the speaker are mounted, and the speaker for emitting sound. In such a speaker device, the speaker is attached to a wooden housing.

[0005] An object of the present disclosure is to amplify the sound emitted by a speaker compared to when the speaker is mounted in a wooden enclosure. [Means for solving the problem]

[0006] A speaker device according to a first aspect of the present disclosure comprises a speaker that emits sound, and a housing made of a resin material and having a mounting plate to which the speaker is attached and in which a plurality of through holes are formed, the mounting plate having an opening through which a portion of the speaker is inserted into the housing, the mounting plate having a contact portion around the opening that contacts the outer periphery of the speaker, ends of the contact portion being spaced apart in the circumferential direction by cutting out a portion of the edge of the opening, and the contact portion formed on the mounting plate being a protrusion that contacts the back surface of the speaker.

[0007] A speaker device according to a second aspect of the present disclosure is the speaker device according to the first aspect, characterized in that a rear surface of the speaker faces a hollow portion inside the housing.

[0008] A speaker device according to a third aspect of the present disclosure is the speaker device described in the first aspect, characterized in that it further includes a control board mounted with an element for generating an audio signal to be transmitted to the speaker and arranged inside the housing.

[0009] An image forming apparatus according to a fourth aspect of the present disclosure is characterized in that it comprises an apparatus main body, a speaker device according to any one of claims 1 to 3 which is a fax unit attached to the apparatus main body and converts an electrical signal into image data, and an image forming unit which forms an image based on the image data converted by the speaker device.

[0010] An image forming apparatus according to a fifth aspect of the present disclosure is characterized in that, in the image forming apparatus described in the fourth aspect, the speaker device has a connection portion to which a telephone line for transmitting electrical signals is connected, and the speaker device is attached to a rear portion of the apparatus body so that the connection portion is exposed to the outside. Effect of the Invention

[0011] According to the speaker device of the first aspect of the present disclosure, the sound emitted by the speaker can be amplified as compared to a case in which the speaker is attached to a wooden housing. Furthermore, according to the speaker device of the first aspect of the present disclosure, vibrations of the speaker can be transmitted to the mounting plate more effectively than when the contact portion is planar.

[0012] According to the speaker device of the third aspect of the present disclosure, the harness used to transmit an audio signal from the control board to the speaker can be made shorter than when the control board is disposed at a position away from the housing.

[0013] According to the image forming device of the fourth aspect of the present disclosure, the speaker device can be disposed at a rear portion of the device body in the device depth direction, compared to a case where a speaker device having a wooden housing is used.

[0014] According to the image forming apparatus of the fifth aspect of the present disclosure, the speaker device can be easily connected to a telephone line that is routed along the rear wall surface of the device body, compared to when the speaker device is attached to the front part of the device body. [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 is a perspective view illustrating a fax unit according to an embodiment of the present disclosure. [Diagram 2] FIG. 1 is an exploded perspective view illustrating a fax unit according to an embodiment of the present disclosure. [Diagram 3] FIG. 1 is a perspective view showing a fax unit according to an embodiment of the present disclosure, in a state where the fax unit is attached to a device main body. [Figure 4] FIG. 1 is a front view illustrating a fax unit according to an embodiment of the present disclosure. [Diagram 5] FIG. 1 is a cross-sectional view illustrating a fax unit according to an embodiment of the present disclosure. [Figure 6] FIG. 2 is a block diagram showing a control system of an information processing unit provided in the fax unit according to the embodiment of the present disclosure. [Figure 7] FIG. 1 is a perspective view showing an image forming apparatus according to an embodiment of the present disclosure with a fax unit removed; [Figure 8] FIG. 1 is a perspective view showing an image forming apparatus according to an embodiment of the present disclosure with a cover removed; [Figure 9] FIG. 1 is a perspective view illustrating an image forming apparatus according to an embodiment of the present disclosure. [Figure 10] 1 is a schematic configuration diagram illustrating an image forming apparatus according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] An example of a speaker device and an image forming device according to an embodiment of the present disclosure will be described with reference to Fig. 1 to Fig. 10. Note that, in the drawings, arrow H indicates the up-down direction (vertical direction) of the device, arrow W indicates the width direction (horizontal direction) of the device, and arrow D indicates the depth direction (horizontal direction) of the device.

[0017] (Image forming apparatus 10) 10, image forming apparatus 10 according to this embodiment includes, from the bottom to the top in the vertical direction (arrow H direction), a storage section 14 in which sheet material P is stored as a recording medium, a transport section 16 that transports the sheet material P stored in storage section 14, an image forming section 20 that forms an image on the sheet material P transported from storage section 14 by the transport section 16, and an image reading section 100 that reads an image written on a document, in this order. Image forming apparatus 10 further includes a fax unit 150 (see FIG. 8).

[0018] [Storage section 14] The storage section 14 is provided with a storage member 26 that can be pulled out from the device body 10a of the image forming device 10 to the front side in the device depth direction, and the sheet material P is loaded on this storage member 26. Furthermore, the storage section 14 is provided with a delivery roll 30 that sends out the sheet material P loaded on the storage member 26 to a transport path 28 that constitutes the transport section 16.

[0019] [Transport section 16] The transport section 16 is provided with a plurality of transport rolls 32 that transport the sheet member P along a predetermined transport path .

[0020] [Image forming unit 20] The image forming section 20 is provided with an image carrier mechanism 34 having image forming units 18Y, 18M, 18C, and 18K of four colors, yellow (Y), magenta (M), cyan (C), and black (K). The image forming section 20 is further provided with exposure devices 22Y, 22M, 22C, and 22K for each color that irradiate exposure light toward image carriers 36Y, 36M, 36C, and 36K provided in the image forming units 18Y, 18M, 18C, and 18K for each color. In the following description, when it is not necessary to distinguish between Y, M, C, and K, Y, M, C, and K may be omitted.

[0021] Furthermore, the image forming section 20 is provided with a transfer belt mechanism 64 having an endless transfer belt 66 that rotates in the direction of arrow A in the figure, and a primary transfer roll 68 that transfers the toner images formed by the image forming units 18 of each color onto the transfer belt 66.

[0022] The image forming section 20 also includes a secondary transfer roll 60 that transfers the toner image on the transfer belt 66 to the sheet material P, and a fixing device 62 that heats and presses the sheet material P to fix the toner image to the sheet material P.

[0023] -Image holder mechanism 34- The image carrier mechanism 34 includes image forming units 18 for four colors. Each image forming unit 18 for each color includes an image carrier 36 whose rotation axis direction is the device width direction, a charging roll 24 for charging the surface of the image carrier 36, and a developing device 33 for developing an electrostatic latent image formed by irradiating the charged surface of the charging roll 24 with exposure light, and visualizing the image as a toner image. The image forming units 18Y, 18M, 18C, and 18K for the four colors are arranged in this order from the front side to the back side in the device depth direction. Here, the "front side in the device depth direction" refers to the side facing the user who uses the image forming apparatus 10.

[0024] -Exposure equipment 22- A plurality of exposure devices 22 are provided for each color, and are disposed below the image carrier 36 of each color so as to face the image carrier 36 of each color in the vertical direction of the apparatus. The exposure devices 22 of each color are attached to the apparatus body 10a of the image forming apparatus 10.

[0025] In this configuration, the exposure device 22 irradiates the charged surface of the image carrier with exposure light to form an electrostatic latent image on the surface of the image carrier .

[0026] -Transfer belt mechanism 64- The transfer belt mechanism 64 includes a transfer belt 66, a primary transfer roll 68, and a pair of rolls 70 around which the transfer belt 66 is wound and whose rotation axes are aligned in the width direction of the apparatus.

[0027] The pair of rolls 70 are disposed at a distance from each other in the device depth direction. The transfer belt 66 is wound around the pair of rolls 70, and the image carriers 36 of each color are in contact with the transfer belt 66 from below the transfer belt 66. A plurality of primary transfer rolls 68 are provided for each color, and are disposed on the opposite side of the image carriers 36 with the transfer belt 66 interposed therebetween.

[0028] In this configuration, a rotational driving force is transmitted to one of the rolls 70 to rotate the other roll 70, causing the transfer belt 66 to rotate in the direction of arrow A. Furthermore, the primary transfer roll 68 transfers the toner image formed on the image carrier 36 to the transfer belt 66 which is rotating.

[0029] -Secondary transfer roll 60, fixing device 62- The secondary transfer roll 60 is disposed on the opposite side of the transfer belt 66 with respect to the roll 70 on the far side in the apparatus depth direction. A transport path 28 for the sheet member P passes between the transfer belt 66 and the secondary transfer roll 60.

[0030] The fixing device 62 is disposed downstream of the secondary transfer roll 60 in the conveying direction of the sheet member P.

[0031] In this configuration, the secondary transfer roll 60 transfers the toner image transferred onto the rotating transfer belt 66 onto the sheet member P being transported by the transport roll 32. Furthermore, the fixing device 62 fixes the toner image transferred onto the sheet member P onto the sheet member P.

[0032] -Image reading unit 100- 9, the image reading unit 100 is disposed in an upper portion of the device body 10a, and includes an original transport unit 112 that transports an original, and an original reading unit 114 that reads the original. The original transport unit 112 and the original reading unit 114 are connected by a hinge 116, and by rotating the original transport unit 112 about the hinge 116, the original transport unit 112 opens and closes a platen glass (not shown) on which the original reading unit 114 is provided.

[0033] In this configuration, the image reading unit 100 reads an image written on a document conveyed by a document conveying unit 112, or an image written on a document placed on a platen glass.

[0034] [Fax Unit 150] Fax unit 150 is attached to one side (left side in the figure) of apparatus body 10a in the apparatus width direction as shown in Fig. 8. Details of fax unit 150 will be described later.

[0035] (Function of Image Forming Apparatus) In the image forming apparatus 10, an image is formed as follows.

[0036] The image reading section 100 shown in FIG. 9 reads an image written on a document conveyed by a document conveying section 112 or an image written on a document placed on a platen glass, and converts the image into image data.

[0037] 10 to which a voltage is applied, the charging rolls 24 of each color negatively charge the surface of the image carrier 36 of each color uniformly to a predetermined potential. Next, based on the image data of the image read by the image reading unit 100, the exposure device 22 irradiates the charged surface of the image carrier 36 of each color with exposure light to form an electrostatic latent image.

[0038] As a result, an electrostatic latent image corresponding to the image data is formed on the surface of the image carrier 36 of each color. The developing device 33 of each color develops the electrostatic latent image and visualizes it as a toner image. The toner image formed on the surface of the image carrier 36 of each color is transferred to the transfer belt 66 that rotates by the primary transfer roll 68.

[0039] Therefore, the sheet material P sent out from the storage member 26 to the transport path 28 by the delivery roll 30 is sent to a transfer position T where the transfer belt 66 and the secondary transfer roll 60 come into contact with each other. At the transfer position T, the sheet material P is sandwiched between the transfer belt 66 and the secondary transfer roll 60 and transported, so that the toner image on the surface of the transfer belt 66 is transferred to the sheet material P.

[0040] The toner image transferred to the sheet member P is fixed to the sheet member P by the fixing device 62. Then, the sheet member P on which the toner image has been fixed is discharged by the transport roll 32 to the outside of the apparatus main body 10a.

[0041] (Main part configuration) Next, the configuration of the fax unit 150 (=facsimile unit) and the portion of the image forming apparatus 10 to which the fax unit 150 is attached will be described.

[0042] [Image forming apparatus 10] 8 and 9, a side surface 12 facing one side in the device width direction is formed on a device body 10a of the image forming device 10. A cover 130 that is detachable from the device body 10a is attached to a lower portion of the side surface 12 on the rear side in the device depth direction.

[0043] Cover 130 is plate-shaped and rectangular in shape extending in the device depth direction when viewed in the device width direction, and as shown in Fig. 8, when cover 130 is detached from device body 10a, fax unit 150 is exposed to the outside. In this manner, fax unit 150 is attached to the back side of device body 10a in the device depth direction. In other words, fax unit 150 is attached to the rear part of device body 10a.

[0044] As shown in FIG. 7, the mounting portion 132 to which the fax unit 150 is attached is recessed with respect to the side surface 12, and the rear side in the device depth direction is open.

[0045] In this configuration, the fax unit 150 is detachably attached to the attachment portion 132 of the apparatus main body 10a by a detachable structure (not shown).

[0046] [Fax Unit 150] 1, fax unit 150 is rectangular and extends in the depth direction of the device when viewed in the width direction of the device, and has a uniform thickness in the width direction of the device. Fax unit 150 has a function of converting an electrical signal into image data, and a function of converting image data into an electrical signal. Fax unit 150 includes control board 152, connection terminal 162 to which a telephone line is connected, speaker 172, and housing 182. The "telephone line" is a line that transmits an electrical signal converted from image data. Fax unit 150 is an example of a speaker device, and connection terminal 162 is an example of a connection section.

[0047] In addition, when fax unit 150 is described, the direction in which fax unit 150 is attached to apparatus main body 10a will be used.

[0048] -Control Board 152- The control board 152 is disposed inside the housing 182 at the other side in the device width direction, as shown in Fig. 5. An element that generates an audio signal to be transmitted to the speaker 172 is mounted on the control board 152. The control board 152 is provided with an information processing unit 154 that processes various information. As shown in Fig. 6, the information processing unit 154 has a CPU (Central Processing Unit) 152a, a ROM (Read Only Memory) 152b, a RAM (Random Access Memory) 152c, a storage 152d, and a communication interface (I / F) 152e. Each component is connected to be able to communicate with each other via a bus 152f.

[0049] The CPU 152a is a central processing unit, and executes various programs and controls each part. That is, the CPU 152a reads out a program from the ROM 152a or the storage 152d, and executes the program using the RAM 152c as a working area. The CPU 152a controls each component and performs various processes according to the program recorded in the ROM 152b or the storage 152d. In this embodiment, the ROM 152b or the storage 152d stores a program for converting an electrical signal into image data, a program for converting image data into an electrical signal, and a program for converting an electrical signal into an audio signal.

[0050] The ROM 152b stores various programs and various data. The RAM 152c temporarily stores programs or data as a working area. The storage 152d is configured with an HDD (Hard Disk Drive) or an SSD (Solid State Drive) and stores various programs and various data. The communication interface 152e is an interface for communication with the image reading unit 100, communication with the image forming unit 20, communication with the speaker 172, and communication with the outside via a telephone line connected to the connection terminal 162, and uses standards such as Ethernet (registered trademark), FDDI, and Wi-Fi (registered trademark).

[0051] -Connection terminal 162- 1, the connection terminals 162 are disposed at the rear part of the fax unit 150 in the device depth direction, and two of them are provided side by side in the vertical direction. Also, the connection port of the connection terminals 162 faces the rear side in the device depth direction.

[0052] Furthermore, when fax unit 150 is attached to device body 10a and plate-shaped cover 130 is attached to device body 10a, connection terminal 162 is exposed rearward in the device depth direction, as shown in FIG. 3.

[0053] In this configuration, with the cover 130 attached to the device body 10a, a telephone line can be connected to the connection terminal 162 from the rear side in the device depth direction.

[0054] -Speaker 172- 3, speaker 172 has a circular shape, is attached to housing 182, and faces cover 130 (=one side in the device width direction) when attached to housing 182. Speaker 172 has a main body portion 174, an attachment portion 176, and a harness 178, as shown in FIG.

[0055] Two mounting parts 176 are provided and attached to the outer periphery of the main body part 174, and each mounting part 176 has a mounting hole 176a formed therein, which penetrates in the device width direction. The two mounting parts 176 are arranged with the center C01 of the speaker 172 between them, as shown in Fig. 4. Specifically, when viewed from the device width direction, a line segment L01 connecting the center of the mounting hole 176a of one mounting part 176 and the center of the mounting hole 176a of the other mounting part 176 is inclined with respect to the device up-down direction. Specifically, the line segment L01 is inclined with respect to the device up-down direction so that the lower end of the line segment L01 is located on the far side in the device depth direction relative to the upper end of the line segment L01.

[0056] In this configuration, the speaker 172 is attached to the mounting plate 184 of the housing 182 by fastening the screw 210 through the mounting hole 176a into the mounting hole 184b formed in the mounting plate 184 of the housing 182. In addition, the harness 178 is connected to a connector (not shown) mounted on the control board 152.

[0057] -Chassis 182- The housing 182 is made of a resin material. In the present embodiment, as an example, the housing 182 is made of a polycarbonate-acrylonitrile-butadiene-styrene mixture (PC_ABS) resin.

[0058] 2, the housing 182 has a mounting plate 184 to which the speaker 172 is attached, and a bottom plate 186 that is disposed on the opposite side of the mounting plate 184 with an internal cavity therebetween. The control board 152 described above is attached to the bottom plate 186.

[0059] The thickness of the mounting plate 184 to which the speaker 172 is attached is, for example, 1.7 mm. It is desirable for the thickness of the mounting plate 184 to be thin in order to reduce the rigidity of the mounting plate 184, and it is desirable for the thickness to be thick in order to improve the formability of the mounting plate during molding. For this reason, the thickness of the mounting plate 184 may be 1.2 mm or more and 2.5 mm or less, preferably 1.4 mm or more and 2.3 mm or less, and more preferably 1.6 mm or more and 2.0 mm or less.

[0060] In addition, mounting plate 184 is formed with an opening 184a through which a portion of speaker 172 is inserted into housing 182, a mounting hole 184b into which screw 210 is fastened, a contact portion 184c that contacts the outer periphery of speaker 172, and a plurality of through holes 184d that penetrate from the front to the back.

[0061] The opening 184a is circular, and is formed in the attachment plate 184 on the front side and below the connection terminal 162 in the device depth direction.

[0062] The mounting holes 184 b into which the screws 210 are fastened are formed around the opening 184 a at positions corresponding to the mounting holes 176 a formed in the mounting portion 176 of the speaker 172 .

[0063] The contact portion 184c is a protrusion formed around the opening 184a and protruding outward relative to other portions. Specifically, the contact portion 184c is continuously formed from a base end portion of the lower mounting position where the speaker 172 is mounted to a base end portion of the upper mounting position in a clockwise direction. Furthermore, the contact portion 184c is partially separated in the circumferential direction by cutting out a part of the opening edge 185 of the opening 184a by the cutout portion 184e from the base end portion of the upper mounting position where the speaker 172 is mounted to the base end portion of the lower mounting position in a clockwise direction. In other words, the end of the contact portion 184c is partially separated in the circumferential direction from a part of the opening edge 185 of the opening 184a by the cutout portion 184e.

[0064] In this manner, by cutting out a part of opening edge 185 of opening 184a, the rigidity of mounting plate 184 is reduced compared to a case in which no cutout is provided. In other words, cutout portion 184e functions as a rigidity reducing means for reducing the rigidity of mounting plate 184.

[0065] As a result, the speaker 172 is in continuous contact with the contact portions 184c formed on the housing 182 from the lower mounting position to the upper mounting position in a clockwise direction. Also, the speaker 172 is in contact with the contact portions 184c, some of which are spaced apart in the circumferential direction, from the upper mounting position to the lower mounting position in a clockwise direction.

[0066] The through holes 184d are circular, arranged in multiple rows and columns vertically and horizontally, and are formed in plurality in the mounting plate 184, at least on the upper side in the vertical direction of the device and on the rear side in the device depth direction with respect to the speaker 172. In this way, by forming the through holes 184d in the mounting plate 184, the rigidity of the mounting plate 184 is reduced compared to a case where no through holes are formed. In other words, the through holes 184d function as another rigidity reducing means for reducing the rigidity of the mounting plate 184.

[0067] (Function of main components) A case will be described in which an electrical signal converted from image data is transmitted using a telephone line, and a case will be described in which an electrical signal converted from image data is received using a telephone line.

[0068] [When transmitting electrical signals] When transmitting an electrical signal, the information processing unit 154 of the fax unit 150 shown in FIG. 6 receives image data generated by reading an image written on a document by the image reading unit 100 of the image forming apparatus 10 shown in FIG. 9.

[0069] Furthermore, the information processing unit 154 converts the image data into an electric signal and transmits the electric signal via the telephone line connected to the connection terminal 162. The information processing unit 154 also generates an audio signal when transmitting the electric signal and transmits it to the speaker 172. Furthermore, the speaker 172 emits a transmission sound that is generated when the electric signal is being transmitted. The worker can confirm that the electric signal is being transmitted by listening to this transmission sound.

[0070] [When receiving electrical signals] When receiving an electrical signal, information processing unit 154 of fax unit 150 shown in Fig. 6 receives the electrical signal via a telephone line connected to connection terminal 162. Information processing unit 154 also generates an audio signal when receiving an electrical signal and transmits it to speaker 172. Furthermore, speaker 172 emits a receiving sound that is generated when an electrical signal is being received. By listening to this receiving sound, the worker can confirm that the electrical signal is being received.

[0071] Furthermore, the information processing unit 154 converts the received electrical signal into image data, and transmits the image data to the image forming unit 20. The image forming unit 20 shown in Fig. 10 forms an image on the sheet member P based on the image data.

[0072] (summary) As described above, in fax unit 150, housing 182 having mounting plate 184 to which speaker 172 is attached is made of a resin material, and a plurality of through holes 184d are formed in mounting plate 184. Therefore, compared to a case in which a speaker is attached to the mounting plate of a wooden housing, mounting plate 184 has a reduced rigidity, so that mounting plate 184 vibrates easily, and the sound emitted by speaker 172 is amplified.

[0073] In addition, in fax unit 150, control board 152 that generates an audio signal to be transmitted to speaker 172 is disposed inside housing 182. Therefore, the harness used to transmit the audio signal from control board 152 to speaker 172 is shorter than when control board 152 is disposed at a position away from the housing.

[0074] Furthermore, in fax unit 150, speaker 172 contacts contact portion 184c formed on mounting plate 184 along the outer periphery of speaker 172. An end of contact portion 184c is separated in the circumferential direction from a part of opening edge 185 of opening 184a by notch portion 184e. This reduces the rigidity (= bending rigidity) of mounting plate 184 compared to the case where the contact portion with which the outer periphery of the speaker comes into contact is formed over the entire periphery of the speaker.

[0075] In addition, in fax unit 150, the reduced rigidity of mounting plate 184 allows mounting plate 184 to vibrate more easily, and the sound emitted by the speaker is amplified, compared to a case in which the contact portion with which the outer periphery of the speaker comes into contact is formed around the entire periphery of the speaker.

[0076] In fax unit 150, contact portion 184c formed on mounting plate 184 of housing 182 is a protrusion that comes into contact with the rear surface of speaker 172. Therefore, compared to when the contact portion is flat, the contact pressure between the rear surface of speaker 172 and contact portion 184c is higher, and vibrations of speaker 172 are effectively transmitted to mounting plate 184.

[0077] Image forming apparatus 10 also includes fax unit 150. Fax unit 150 is attached to the back of device body 10a in the device depth direction so that sound emitted by speaker 172 is amplified compared to when a fax unit with a wooden casing is used.

[0078] In addition, in the image forming apparatus 10, the fax unit 150 is attached to the rear part of the apparatus body 10a in the apparatus depth direction. Therefore, compared to the case where the fax unit 150 is attached to the front part of the apparatus body 10a in the apparatus depth direction, the telephone line laid along the wall surface on the rear side in the apparatus depth direction of the apparatus body 10a can be easily connected to the connection terminal 162 of the fax unit 150.

[0079] Although the present disclosure has been described in detail with respect to a specific embodiment, it is clear to those skilled in the art that the present disclosure is not limited to the embodiment, and various other embodiments are possible within the scope of the present disclosure. For example, in the above embodiment, the speaker device is described using the fax unit 150 as an example, but the speaker device may be, for example, a portable stereo device equipped with a speaker.

[0080] In the above embodiment, the control board 152 is disposed inside the housing 182, but the control board may be disposed at a position away from the housing. In this case, the effect achieved by disposing the control board 152 inside the housing 182 is not achieved.

[0081] In the above embodiment, the contact portion 184c formed on the housing 182 is a protrusion that contacts the rear surface of the speaker 172, but the contact portion may be flat. In this case, however, the effect of the contact portion 184c being a protrusion is not achieved.

[0082] In the above embodiment, the fax unit 150 is attached to the rear part of the device body 10a in the device depth direction, but it may be attached to the front part of the device body 10a in the device depth direction. In this case, the effect of attaching the fax unit 150 to the rear part of the device body 10a in the device depth direction is not achieved. [Explanation of symbols]

[0083] 10 Image forming device 10a Device body 20 Image forming section 150 Fax unit (example of speaker device) 152 Control Board 162 Connection terminal (an example of a connection part) 172 Speaker 182 Case 184 Mounting plate 184a aperture 184c contact part 184d through hole 185 Opening edge

Claims

1. A speaker that emits sound; a housing made of a resin material, the housing having a mounting plate to which the speaker is attached and in which a plurality of through holes are formed; an opening through which a portion of the speaker is inserted into the housing is formed in the mounting plate; a contact portion that contacts an outer periphery of the speaker is provided around the opening in the mounting plate; the ends of the contact portion are spaced apart in the circumferential direction by cutting out a part of an edge of the opening, The contact portion formed on the mounting plate is a protrusion that comes into contact with the rear surface of the speaker. Speaker device.

2. The rear surface of the speaker faces the internal cavity of the housing.

2. The speaker device according to claim 1.

3. a control board on which an element for generating an audio signal to be transmitted to the speaker is mounted and which is disposed inside the housing; 2. The speaker device according to claim 1.

4. A device body, The speaker device according to any one of claims 1 to 3, which is a fax unit attached to the device body and converts an electric signal into image data; an image forming unit that forms an image based on the image data converted by the speaker device; An image forming apparatus comprising:

5. the speaker device includes a connection portion to which a telephone line for transmitting an electric signal is connected; 5. The image forming apparatus according to claim 4, wherein the speaker device is attached to a rear portion of the apparatus body so that the connection portion is exposed to the outside.

Images