Communication device

Abstract

To provide a structure that allows attaching work and replacement work for a communication device to a helmet to be performed easily.SOLUTION: A helmet 100 is a full face type helmet having an opening 104 in the front, and a communication device 10B is arranged in the opening 104. The communication device 10B includes a device body 7B and a plurality of fixed parts 4, 5, and 6 fixed to the helmet 100, to and from which the device body 7B can be attached and detached. The device body 7B includes a first part 1 incorporating a microphone, a second part 2 incorporating a speaker, which is connected to the first part 1 so that an angular adjustment can be made with respect to the first part, and a third part 3 incorporating a speaker. which is connected to the first part 1 so that an angular adjustment can be made with respect to the first part on a side opposite to the side where the second part 2 is connected. A front face of the first part 1 is provided with a multi-function button 15.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present invention relates to a communication device. [Background technology]

[0002] Communication devices that are attached to motorcycle or bicycle helmets and enable hands-free calling and listening to voice guidance from navigation systems while driving are well known. These communication devices are generally called "intercoms" or "headsets."

[0003] As an example of the above-mentioned helmet communication device, Patent Document 1 discloses a headset including a main body, a left speaker, a right speaker, and a microphone. The main body has a built-in external input / output unit that can wirelessly connect to a wireless terminal such as a smartphone, and a battery. When attaching this headset to a helmet, it is necessary to fix the main body to the exterior of the helmet, position the microphone near the helmet wearer's mouth, install the left speaker and the right speaker inside the helmet, and connect each speaker to the main body with a cable, among other tasks. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2020-120313 Summary of the Invention [Problem to be solved by the invention]

[0005] In conventional helmet communication devices such as the headset in Patent Document 1, the main body, speaker, and microphone are provided independently (separately). This means that, as mentioned above, each component needs to be attached to the helmet and the components need to be connected with cables, which creates the problem of making installation and replacement extremely time-consuming.

[0006] Therefore, one example of a problem to be solved by the present invention is to provide a structure that makes it easy to attach and replace a communication device to a helmet. [Means for solving the problem]

[0007] The communication device of the present invention is a communication device that is attached to the front opening of a helmet, and is characterized in that an operator is provided on the front exposed surface. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a diagram showing an example of how the communication device according to the first embodiment of the present invention is attached to a helmet. [Figure 2] 1. FIG. 4 is a diagram showing another example of how the communication device of FIG. 1 is attached to a helmet. [Figure 3] FIG. 2 is a perspective view of only the communication device of FIG. [Figure 4] FIG. 4 is a front view of the communication device of FIG. 3. [Figure 5] FIG. 4 is a plan view of the communication device of FIG. [Figure 6] 4 is a diagram showing the device main body and fixed parts of the communication device of FIG. 3 separated from each other, and is a diagram showing the rear side of the device main body. FIG. [Figure 7] FIG. 7 is a bottom view of the device body and fixed parts in FIG. 6. [Figure 8] 10 is a diagram showing an example of how a communication device according to a second embodiment of the present invention is attached to a helmet. FIG. [Figure 9] 9 is a diagram showing another example of how the communication device of FIG. 8 is attached to a helmet. [Figure 10] 9 is a diagram showing the device main body and fixed parts of the communication device in FIG. 8 separated from each other, and is a diagram showing the rear side of the device main body. [Figure 11] 11 is a bottom view of the device body and fixed parts of FIG. 10. FIG. [Figure 12] FIG. 10 is a diagram illustrating a main body of a communication device according to a third embodiment of the present invention. [Figure 13]FIG. 10 is a diagram showing an example of how a communication device according to a fourth embodiment of the present invention is attached to a helmet. [Figure 14] FIG. 14 is a perspective view of only the communication device of FIG. 13. [Figure 15] FIG. 15 is a perspective view of only the fixing part (helmet accessory) in FIG. 14. [Figure 16] FIG. 16 is a diagram showing the rear side of the fixed part in FIG. 15. [Figure 17] FIG. 10 is a diagram illustrating a communication device according to a fifth embodiment of the present invention. [Figure 18] FIG. 10 is a diagram illustrating a communication device according to a sixth embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0009] The helmet according to one embodiment of the present invention has an opening on the front, in which a communication device with a built-in microphone and speaker is located, making it easy to attach and replace the communication device to the helmet.

[0010] The communication device may include a first part that houses the microphone, and a second part that houses the speaker and is connected to the first part so that the angle of the second part can be adjusted, thereby allowing the angle of the second part to be adjusted and positioned so as to follow the curve of the helmet.

[0011] The communication device may be configured to include a third part having a built-in speaker and connected to the first part on the side opposite to the side to which the second part is connected so that the angle of the third part can be adjusted. This enables stereo playback. The angle of the third part can also be adjusted and positioned to follow the curve of the helmet.

[0012] The communication device may be configured to be adhered to the edge of the opening, which makes it easy to attach the communication device to the helmet.

[0013] The communication device may be configured to be fastened to the edge of the opening with screws, which makes it easy to attach the communication device to the helmet.

[0014] The helmet may include a fixing part fixed to the edge of the opening, and the communication device may be detachably attached to the fixing part, so that the communication device can be removed from the helmet while the fixing part remains fixed to the helmet.

[0015] A communication device according to one embodiment of the present invention is a communication device fixed to a front opening of a helmet, and includes a first part with a built-in microphone, a second part with a built-in speaker and connected to the first part, a first fixing part attached to the first part for fixing to the opening, and a second fixing part attached to the second part, which makes it easy to attach and replace the communication device to the helmet.

[0016] The communication device may be configured such that at least one of the first fixing part and the second fixing part has a plate part that is inserted into a gap between the helmet outer shell part and the inner cushioning material at the opening. This makes it easier to attach the fixing parts to the helmet and also increases the strength with which the fixing parts are attached to the helmet.

[0017] The communication device may be configured such that the first part and the first fixing part are adhered to each other, which makes it easy to attach the communication device to the helmet.

[0018] The communication device may be configured such that the first part and the first fixing part are fastened together with screws, which makes it easy to attach the communication device to the helmet.

[0019] The communication device may be configured such that the second part and the second fixing part are adhered to each other, thereby facilitating the work of attaching the communication device to the helmet.

[0020] The communication device may be configured such that the second part and the second fixing part are fastened together with screws, which makes it easy to attach the communication device to the helmet.

[0021] A communication device according to one embodiment of the present invention is a communication device that is attached to the front opening of a helmet and includes a microphone, two speakers that are positioned on either side of the microphone and are capable of stereo playback, a sensor that detects the upside-down orientation, and a control unit. The control unit sets the channel of the stereo signal that each speaker will play depending on the upside-down orientation detected by the sensor. This makes it easy to install or replace the communication device on a helmet. Furthermore, the left and right channels of each speaker are automatically set whether the communication device is installed on the helmet in one orientation or in an orientation that is upside-down relative to the one orientation.

[0022] The control unit may be configured to set the sensitivity of the microphone according to the orientation detected by the sensor, so that the sensitivity of the microphone is automatically set even when the communication device is attached to the helmet in one orientation or when the communication device is attached upside down relative to the one orientation.

[0023] A communication device according to one embodiment of the present invention is a communication device that is attached to the front opening of a helmet and includes a microphone, a speaker, a sensor that detects the upside-down direction, and a control unit. The control unit sets the sensitivity of the microphone according to the upside-down direction detected by the sensor. This allows for easy installation and replacement of the communication device on the helmet. Furthermore, the microphone sensitivity is automatically set whether the communication device is attached to the helmet in one orientation or in an orientation opposite to the one orientation.

[0024] The communication device may include a first part incorporating the microphone, a second part incorporating one of the two speakers and connected to the first part so that its angle can be adjusted, and a third part incorporating the other of the two speakers and connected to the first part on the opposite side to the side to which the second part is connected so that its angle can be adjusted. This allows the angles of the second part and the third part to be adjusted and positioned to follow the curve of the helmet.

[0025] The first part may have a built-in second microphone, the first part having a first surface and a second surface located opposite the first surface, an opening formed in the first surface that leads to the microphone, and an opening formed in the second surface that leads to the second microphone. This allows the helmet wearer's voice to be picked up by the microphone, and noise such as wind noise to be picked up by the second microphone for noise cancellation.

[0026] A communication device according to one embodiment of the present invention is a communication device that is attached to the front opening of a helmet, and includes a part incorporating a microphone and a second microphone, and a speaker. The part has a first surface and a second surface located opposite the first surface, with an opening formed on the first surface that leads to the microphone, and an opening formed on the second surface that leads to the second microphone. This makes it easy to attach or replace the communication device to the helmet. Furthermore, the microphone can pick up the helmet wearer's voice, and the second microphone can pick up noise such as wind noise and cancel it out.

[0027] The communication device according to one embodiment of the present invention is a communication device that is attached to the front opening of a helmet, and has an operator on the exposed front surface. This makes it easy to attach and replace the communication device to the helmet. Furthermore, the communication device can be made lower in height than when the operator is provided on the top surface.

[0028] The communication device may be configured such that the operator is provided at the center of the front exposed surface in the left-right direction, thereby enabling the operator to be operated with either the left or right hand.

[0029] The communication device may be configured such that a plurality of the controls are provided on the front exposed surface and the controls are arranged horizontally, thereby enabling the communication device to be made lower in height than when the controls are arranged vertically.

[0030] The communication device may be configured such that the operator is a push button, thereby enabling the communication device to be made lower in height than when a push button-type operator is provided on the top surface.

[0031] The communication device preferably has a flat top surface, which allows the device to be made low-profile. Note that if the control element is a touch switch or the like that does not protrude, the device can be made low-profile even if it is provided on the top surface.

[0032] It is preferable that the communication device has no controls on the top surface, which allows the communication device to be made low-profile.

[0033] The communication device may include a first part with a built-in microphone, a second part with a built-in speaker and connected to the first part so that its angle can be adjusted, and a third part with a built-in speaker and connected to the first part on the side opposite to the side to which the second part is connected so that its angle can be adjusted, with the controls provided on the first part. This enables stereo playback. The angles of the second and third parts can be adjusted and positioned to fit the curve of the helmet.

[0034] A helmet accessory according to one embodiment of the present invention is a helmet accessory that can be attached to the lower edge of a front opening of a full-face helmet. The helmet accessory includes a fixing part that is inserted into a gap between the helmet outer shell and an inner cushioning material in the opening, and a mounting part that is connected to the upper part of the fixing part and on which a communication device with a built-in microphone and speaker is mounted. Using this helmet accessory facilitates the installation and replacement of the communication device in the helmet. Furthermore, by positioning this helmet accessory and the communication device in front of the helmet wearer's nose, the helmet wearer's breath can be prevented from directly hitting the shield, thereby suppressing fogging of the shield.

[0035] The helmet accessory may be configured to stand on the mounting portion and have a wall that comes into contact with the communication device, thereby enabling the communication device to be stably held.

[0036] The helmet accessory may have a front wall extending from a front portion of the mounting portion and a rear wall extending from a rear portion of the mounting portion, and the communication device may be sandwiched between the front wall and the rear wall, thereby enabling the communication device to be stably held.

[0037] At least one of the front wall and the rear wall may have a hook-shaped tip, thereby enabling the communication device to be stably held.

[0038] The helmet accessory may have two front walls and one rear wall spaced apart in the left-right direction, and the rear wall may be configured to have a width greater than a width of the front wall, thereby enabling the communication device to be stably held.

[0039] The helmet accessory may be configured such that the rear wall has a through hole formed therethrough in the front-rear direction, the through hole functioning as a sound hole leading to a microphone of a communication device.

[0040] The helmet accessory may be configured such that the holder has a recess formed therein for receiving a protrusion of the communication device, thereby enabling the communication device to be stably held.

[0041] The fixing portion may have a plate portion hanging down from the front of the mounting portion, and a plurality of ribs formed on the front surface of the plate portion and extending from the mounting portion side to the lower side of the plate portion, whereby grooves between the ribs function as ventilation paths.

[0042] One embodiment of the present invention relates to a communication device that can be attached to the lower edge of a front opening of a full-face helmet. The communication device includes a device main body with a built-in microphone and speaker, and a fixing part that is inserted into the gap between the helmet outer shell and the inner cushioning material in the opening. This allows for easy installation and replacement of the communication device on the helmet. Furthermore, by positioning the communication device in front of the helmet wearer's nose, it is possible to prevent the helmet wearer's breath from directly hitting the shield, thereby suppressing fogging of the shield.

[0043] The fixing portion may have a plate portion hanging down from the front of the bottom surface of the device body, and a plurality of ribs formed on the front surface of the plate portion and extending from the device body side to the lower side of the plate portion, whereby grooves between the ribs function as ventilation paths. [Example]

[0044] A first embodiment of the present invention will be described with reference to Figures 1 to 7. Figure 1 is a diagram showing an example of an attachment of a communication device 10 according to the first embodiment of the present invention to a helmet 100. Figure 2 is a diagram showing another example of an attachment of the communication device 10 of Figure 1 to a helmet 100. The communication device 10 is intended to be attached to a helmet for a motorcycle or bicycle (i.e., a two-wheeled vehicle) for use. A case where the communication device 10 is attached to a helmet 100 worn by a rider of a motorcycle will be described below.

[0045] 1 and 2 is a full-face helmet. The helmet 100 includes a shell 101 (corresponding to the "helmet outer shell"), a liner 102 (corresponding to the "inner cushioning material") attached to the inside of the shell 101, and a shield 103 rotatably attached to the shell 101. An opening 104 is formed in the front face of the shell 101 and the liner 102, i.e., the front surface. The shield 103 is attached to the shell 101 so as to be rotatable between a position that covers the opening 104 and a position that opens the opening 104.

[0046] In the example shown in FIG. 1, the communication device 10 is attached to a bottom surface 104a of the opening 104 (corresponding to the "edge of the opening" or "lower edge of the opening"). When the helmet 100 shown in FIG. 1 is worn, the communication device 10 is located in front of the wearer's nose. In the example shown in FIG. 2, the communication device 10 is attached to a top surface 104b of the opening 104 (corresponding to the "edge of the opening"). When the helmet 100 shown in FIG. 2 is worn, the communication device 10 is located in front of the wearer's forehead. Also, in the example shown in FIG. 2, the communication device 10 is attached to the top surface 104b of the opening 104 in a state upside down compared to FIG. 1. In this way, the helmet 100 of this example has the communication device 10 arranged in the opening 104.

[0047] As shown in Figures 3 to 7, the communication device 10 comprises a first part 1, a second part 2, a third part 3, and a plurality of fixed parts 4, 5, and 6. The second part 2 is connected to the first part 1 so that its angle can be adjusted. The third part 3 is connected to the first part 1 on the side opposite to the side to which the second part 2 is connected so that its angle can be adjusted. The assembly of the first part 1, second part 2, and third part 3 that are connected to each other is referred to as the "device main body 7." The fixed parts 4, 5, and 6 are components that allow the device main body 7 to be detachable and are fixed to the helmet 100.

[0048] The first part 1 is a block-shaped case 11 made of synthetic resin, which is fitted with a microphone 12, a secondary battery 13, a communication unit 14, etc. Case 11 has a front surface (corresponding to the "second surface") 11F, a back surface (corresponding to the "first surface") 11R opposite to front surface 11F, a top surface 11T, a bottom surface 11B opposite to top surface 11T, a left side surface 11LS, and a right side surface 11RS opposite to left side surface 11LS.

[0049] As shown in Fig. 5, the front surface 11F of the case 11 has a convex curved surface in a plan view. That is, the center of the front surface 11F of the case 11 protrudes further than the end on the left side surface 11LS side and the end on the right side surface 11RS side. As a result, when the communication device 10 is attached so that the front surface 11F faces the front of the helmet 100, the airflow from the front is guided rearward, thereby suppressing an increase in air resistance during riding and preventing the device main body 7 from separating from the fixing parts 4, 5, and 6. Furthermore, by making the front surface 11F a convex curved surface, the first part 1 can be fitted to the curved shape of the helmet 100.

[0050] Furthermore, if a manufacturer or brand logo is to be provided on the front face 11F of the case 11, the logo member may be manufactured separately from the case 11, and a logo member attachment portion may be formed on the front face 11F of the case 11. In this case, it is preferable to form the logo member attachment portion so that the logo member can be detachably attached in a first orientation and a second orientation that is upside down. The logo member attachment portion may be formed, for example, as a groove or hole. In this way, the logo member can be attached to the front face 11F of the case 11 in the first orientation in the attachment example shown in FIG. 1, and the logo member can be attached to the front face 11F of the case 11 in the second orientation in the attachment example shown in FIG. 2. Note that in this example, the logo member attachment portion is not formed on the case 11.

[0051] The microphone 12 is mainly for collecting the voice of the wearer of the helmet 100. As shown in Fig. 6, an opening 11a that leads to the microphone 12 for capturing sound is formed in the rear surface 11R of the case 11. A waterproof and breathable film may be provided in the opening 11a for waterproofing.

[0052] The secondary battery 13 supplies power to each electronic component of the communication device 10. As shown in Fig. 6, a USB port 16 for charging the secondary battery 13 is provided on the rear surface 11R of the case 11.

[0053] The communication unit 14 performs wireless communication with devices such as smartphones via Bluetooth (registered trademark) etc. The communication unit 14 sends audio signals collected by the microphone 12 to the device side and receives audio signals (signals for call voice, navigation voice guidance, music, etc.) from the device side.

[0054] Additionally, as shown in FIG. 6 , the rear surface 11R of the case 11 is provided with stereo channel selector switches 17 and 18 and a speaker extension terminal 19. The top surface 11T of the case 11 is provided with a multi-function button 15. The multi-function button 15 can function, for example, as a button to activate the smartphone's voice control function (voice recognition function). By activating the voice control function upon operation of the multi-function button 15, the smartphone's application software can determine the timing for voice recognition, thereby reducing malfunctions due to wind noise, engine noise, or ambient noise. Pressing the multi-function button 15 for a long time (e.g., for three seconds or more) turns the power of the communication device 10 on and off. The bottom surface 11B of the case 11 is provided with slide sections 71 and 72, which are locking structures for engaging with the fixed part 4, and are integrally formed with the case 11.

[0055] The USB port 16 and the speaker extension terminal 19 may be configured to be covered with an elastic cover when not in use, thereby improving waterproofing.

[0056] In this way, in first part 1, channel changeover switches 17, 18, speaker extension terminal 19, and opening 11a are provided on rear surface 11R of case 11, but these are not provided on front surface 11F. This configuration also makes it possible to suppress an increase in air resistance during driving, just as in the case where front surface 11F is a convex curved surface.

[0057] In this specification, terms such as "up," "down," "top," "bottom," "front," "back," "left," and "right" are used to refer to the communication device 10 when it is attached to the helmet 100 as shown in FIG. 1. These terms are used for the convenience of explaining the structure of the communication device 10 and do not necessarily correspond to the directions in the actual location where it is used. For example, in the attachment example shown in FIG. 2, the top surface 11T of the case 11 is located at the bottom, and the bottom surface 11B of the case 11 is located at the top. Furthermore, the left side surface 11LS and the right side surface 11RS of the case 11 are located in the opposite positions to those in FIG. 1.

[0058] The second part 2 includes a block-shaped case 21 made of synthetic resin and a speaker 22 housed within it. The case 21 is rotatably connected to the left side surface 11LS of the case 11 by a pin 20 shown by dashed lines in FIGS. 3, 5, and 6. More specifically, the case 21 and the case 11 are provided with pin insertion holes, and the pins 20 are inserted into these pin insertion holes to rotatably connect the case 21 to the case 11. A plurality of holes 21a are formed on the back surface of the case 21 for emitting sound from the speaker 22. A magnet 23 is attached to the underside of the case 21 for attracting the fixed part 5.

[0059] The third part 3 includes a block-shaped case 31 made of synthetic resin and a speaker 32 housed within it. The case 31 is rotatably connected to the right side surface 11RS of the case 11 by a pin 30 shown by dashed lines in FIGS. 3, 5, and 6. More specifically, the case 31 and the case 11 are provided with pin insertion holes, and the pins 30 are inserted into these pin insertion holes to rotatably connect the case 31 to the case 11. A plurality of holes 31a are formed on the back surface of the case 31 to emit sound from the speaker 32. A magnet 33 is attached to the underside of the case 31 to attract the fixed part 6.

[0060] As described above, the communication device 10 of this example is provided with two speakers 22, 32 on both the left and right sides of the first part 1, enabling stereo reproduction. When the communication device 10 is attached to the bottom surface 104a of the opening 104 as shown in Fig. 1, operating the channel selector switch 17 sets the left channel signal of the stereo signal to be output from the speaker 22 and the right channel signal to be output from the speaker 32. When the communication device 10 is attached to the top surface 104b of the opening 104 as shown in Fig. 2, operating the channel selector switch 18 sets the left channel signal of the stereo signal to be output from the speaker 32 and the right channel signal to be output from the speaker 22.

[0061] The fixing part 4 is made of synthetic resin. As shown in Figures 3, 6 and 7, the fixing part 4 has a plate portion 40 that is placed on the bottom surface 104a or the top surface 104b of the opening 104 of the helmet 100, and a rail portion 41 and a lock portion 42 that are provided on the top surface 40a of the plate portion 40. Double-sided tape is attached to the bottom surface 40b of the plate portion 40, and the plate portion 40 is fixed to the bottom surface 104a or the top surface 104b via the double-sided tape.

[0062] The rail portion 41 has parallel portions 41a and 41b extending parallel to each other in the left-right direction, parallel portions 41c and 41d extending parallel to each other in the left-right direction, and a connecting portion 41e connecting the ends of the parallel portions 41c and 41d. The parallel portion 41c is located on an extension line of the parallel portion 41a, and the parallel portions 41a and 41c are provided with a gap between them. Similarly, the parallel portion 41d is located on an extension line of the parallel portion 41b, and the parallel portions 41b and 41d are provided with a gap between them.

[0063] The locking portion 42 is a protrusion that protrudes from the upper surface 40a of the plate portion 40, and is provided between the parallel portions 41a and 41b. A notch 43 is formed by cutting out the plate portion 40 around the periphery of the locking portion 42. This allows the locking portion 42 to be displaced in the thickness direction of the plate portion 40.

[0064] The slide portion 72 provided on the underside 11B of the case 11 engages with the parallel portions 41a, 41b and slides left and right between the parallel portions 41a, 41b. The slide portion 72 also slides from the left side of the lock portion 42 to the right side, climbing over the lock portion 42 and thereby engaging with the lock portion 42. In other words, the lock portion 42 being positioned on the left side of the slide portion 72 restricts the first part 1 from moving leftward. In this way, the slide portion 72 also functions as a "lock receiving portion."

[0065] Slide portion 71 provided on bottom surface 11B of case 11 engages with parallel portions 41c, 41d and slides left and right between parallel portions 41c, 41d. When slide portion 72 is locked by lock portion 42, connecting portion 41e is located on the right side of slide portion 71. This restricts movement of first part 1 to the right.

[0066] The fixed part 5 is made of a magnetic material that is attracted to the magnet 23 attached to the underside of the case 21. The fixed part 5 has a first plate portion 51 that comes into contact with and is attracted to the magnet 23, and a second plate portion 52 that is continuous with the first plate portion 51 and is bent from the first plate portion 51. In this example, the second plate portion 52 is bent perpendicular to the first plate portion 51. An upper surface 51a of the first plate portion 51 comes into contact with the magnet 23. Double-sided tape is attached to the lower surface 51b of the first plate portion 51, and the first plate portion 51 is fixed to the bottom surface 104a or the top surface 104b via the double-sided tape. The second plate portion 52 is inserted from the bottom surface 104a or the top surface 104b of the opening 104 into the gap between the shell 101 and the liner 102 (i.e., the gap between the helmet outer shell portion and the inner cushioning material). In this way, the fixing part 5 is fixed to the helmet 100 by fixing the first plate portion 51 to the bottom surface 104a or the top surface 104b via double-sided tape and by inserting the second plate portion 52 between the shell 101 and the liner 102.

[0067] The fixing part 6 is made of the same material as the fixing part 5 and has the same shape and size as the fixing part 5. For ease of explanation, the fixing part 5 and the fixing part 6 are given different reference numerals. The fixing part 6 is made of a magnetic material that is attracted to the magnet 33 attached to the underside of the case 31. The fixing part 6 has a first plate portion 61 that comes into contact with and is attracted to the magnet 33, and a second plate portion 62 that is connected to the first plate portion 61 and bent perpendicularly to the first plate portion 61. An upper surface 61a of the first plate portion 61 comes into contact with the magnet 33. Double-sided tape is attached to the lower surface 61b of the first plate portion 61, and the first plate portion 61 is fixed to the bottom surface 104a or the top surface 104b via the double-sided tape. The second plate portion 62 is inserted into the gap between the shell 101 and the liner 102 from the bottom surface 104a or the top surface 104b of the opening 104. In this way, the fixing part 6 is fixed to the helmet 100 by fixing the first plate portion 61 to the bottom surface 104a or the top surface 104b via double-sided tape and by inserting the second plate portion 62 between the shell 101 and the liner 102.

[0068] When the communication device 10 having the above configuration is initially attached to the helmet 100, the fixing part 4 is engaged with the first part 1, the fixing part 5 is attached to the second part 2 by suction, and the fixing part 6 is attached to the third part by suction. Then, the fixing parts 4, 5, and 6 are fixed to the bottom surface 104a or the top surface 104b of the opening 104 using double-sided tape. This initial attachment work can be performed very easily without requiring any tools. After that, the device main body 7 (the assembly of the first part 1, the second part 2, and the third part 3) can be detached from the fixing parts 4, 5, and 6 while the fixing parts 4, 5, and 6 remain fixed to the helmet 100, and only the device main body 7 can be removed from the helmet 100. The device main body 7 can also be detached from and reattached to the fixing parts 4, 5, and 6 very easily, simply by sliding, without requiring any tools. Furthermore, the communication device 10 is highly convenient when charging the secondary battery 13, because the device main body 7 can be easily detached from the helmet 100 as described above. Furthermore, by preparing a plurality of helmets to which the fixing parts 4, 5, and 6 are attached in advance, the device main body 7 can be easily transferred from one helmet to another.

[0069] As described above, the communication device 10 has a built-in microphone 12 and speakers 22, 32. Therefore, unlike conventional helmet communication devices in which the main body, speaker, and microphone are provided independently (separately), it is not necessary to attach each component to the helmet or connect the components with cables. Furthermore, with conventional helmet communication devices, it is necessary to remove the cheek pads and ear cups when attaching each component to the helmet. In contrast, the communication device 10 is placed in the opening 104 of the helmet 100, which is an easily accessible position. These features make it easy to attach and replace the communication device 10 to the helmet 100.

[0070] Furthermore, the bottom surface 104a and top surface 104b of the opening 104 of the helmet 100 are curved. In contrast, the communication device 10 can be attached by adjusting the angles of the second part 2 and the third part 3 to follow this curve, because the second part 2 and the third part 3 are connected to the first part 1 in an angle-adjustable manner. Therefore, the communication device 10 can be stored inside the shield 103 without interfering with the opening and closing of the shield 103. Furthermore, because the angles of the second part 2 and the third part 3 can be adjusted relative to the first part 1, the device main body 7 can be attached to a wide variety of helmets with different shapes, thereby improving versatility.

[0071] Furthermore, in the communication device 10, the first part 1 and the fixed part 4 are locked to each other by an interlocking locking structure between the rail portion 41 and the sliding portions 71, 72, and an locking structure between the sliding portion 72 and the locking portion 42. This locking structure is particularly suitable for attaching the communication device 10 to the helmet 100. That is, because the rail portion 41 extends in the left-right direction of the helmet 100, the sliding portions 71, 72 do not come off the rail portion 41 even if a large wind pressure is applied from the front while the motorcycle is traveling, and the device main body 7 is held stably.

[0072] In this way, the communication device 10 applies the above-described interlocking locking structure between the rail portion 41 and the sliding portions 71, 72 and the locking structure between the sliding portion 72 and the locking portion 42 to lock the first central part 1 to the fixed part 4, applies the magnet 23 to attach the second part 2 to the fixed part 5, and applies the magnet 33 to attach the third part to the fixed part 6, thereby achieving both strong attachment to the helmet 100 and ease of attachment to the helmet 100. Note that if ease of attachment to the helmet 100 is given priority, the locking structure between the first part 1 and the fixed part 4 may be changed to one that uses a magnet.

[0073] In the first embodiment described above, of the fixing parts 4, 5, 6, the fixing parts 5, 6 have second plate portions 52, 62 (corresponding to "plate portion") that are inserted between the shell 101 and the liner 102, but the fixing part 4 may have a portion similar to the second plate portions 52, 62. That is, in the present invention, it is sufficient that at least one of the multiple fixing parts has a plate-shaped portion that is inserted into the gap between the helmet outer shell portion and the inner cushioning material. Having such a plate-shaped portion makes it easier to attach the fixing parts to the helmet, and also increases the attachment strength of the fixing parts to the helmet.

[0074] In the first embodiment described above, the device body 7 is configured to be detachable from the fixed parts 4, 5, and 6, but the present invention is not limited to this. For example, each part of the device body 7 and each fixed part may be bonded with an adhesive or double-sided tape. Also, each part of the device body 7 and each fixed part may be fastened with a screw.

[0075] In the above-described first embodiment, the case where the communication device 10 is attached to a full-face helmet 100 has been described, but the communication device 10 can also be attached to a jet helmet or a half helmet. In that case, the communication device 10 is attached to the front edge of the helmet (the part corresponding to the top surface 104b of the opening 104 of the helmet 100 in FIG. 2, and in front of the wearer's forehead) as in the attachment example shown in FIG.

[0076] In the above-described first embodiment, the pin 20 is inserted into the pin insertion holes provided in the case 21 and the case 11, and the case 21 is rotatably connected to the case 11, but instead, the case 21 may be rotatably connected to the case 11 using a hinge. The same applies to the connection between the case 31 and the case 11, and the case 31 may be rotatably connected to the case 11 using a hinge.

[0077] In the first embodiment described above, the communication device 10 includes a plurality of fixing parts 4, 5, and 6, but fixing parts are not essential components of the communication device of the present invention. In the communication device of the present invention, at least one or all of the fixing parts 4, 5, and 6 may be omitted, and the device main body 7 may be attached to the bottom surface 104a or the top surface 104b of the opening 104 of the helmet 100 (i.e., the "edge of the opening") with adhesive, double-sided tape, screws, or the like.

[0078] In the first embodiment described above, the communication device 10 includes the second part 2 and the third part 3 on both the left and right sides of the first part 1. That is, two speakers 22, 32 are provided on both the left and right sides of the first part 1. However, in the communication device of the present invention, two speakers are not essential; it is sufficient if at least one speaker is provided. For example, the communication device may include the first part 1 and the second part 2 described above but not the third part 3, or may include the first part 1 and the third part 3 described above but not the second part 2. Furthermore, the communication device may have an integrated box structure instead of a structure in which the first part, the second part, and the third part are connected.

[0079] In the above-described first embodiment, the multi-function button 15 is provided on the first part 1, but the multi-function button 15 may also be provided on the second part 2 or the third part 3. Furthermore, it is sufficient that at least one multi-function button is provided, but multiple multi-function buttons may also be provided.

[0080] In the first embodiment described above, the first part 1 is provided with the secondary battery 13, but the second part 2 or the third part 3 may alternatively be provided with the secondary battery 13. [Example]

[0081] Next, a second embodiment of the present invention will be described with reference to Figures 8 to 11. In Figures 8 to 11, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted.

[0082] Fig. 8 is a diagram showing an example of how a communication device 10B according to a second embodiment of the present invention is attached to a helmet 100. In the example shown in Fig. 8, the communication device 10B is attached to a bottom surface 104a of an opening 104. When the helmet 100 shown in Fig. 8 is worn, the communication device 10B is located in front of the wearer's nose.

[0083] Fig. 9 is a diagram showing another example of how communication device 10B of Fig. 8 is attached to helmet 100. In the example shown in Fig. 9, communication device 10B is attached to top surface 104b of opening 104. When helmet 100 shown in Fig. 9 is worn, communication device 10B is located in front of the wearer's forehead. Also, in the example shown in Fig. 9, communication device 10B is attached to top surface 104b of opening 104 in a state upside down compared to Fig. 8.

[0084] 10 and 11, a communication device 10B of this example is provided with a sensor 73 for detecting the top and bottom, a control unit 70, and a second microphone 74 in a first part 1 of a device main body 7B. The device main body 7B of this example does not have the channel selector switches 17 and 18 for stereo signals described in the first embodiment. Furthermore, in this example, a multi-function button 15 is provided on the front surface 11F of the case 11 of the first part 1. Other than these components, the communication device 10B has the same configuration as the communication device 10 of the first embodiment.

[0085] The sensor 73 may be, for example, an acceleration sensor.

[0086] The control unit 70 sets the channels of the stereo signals to be reproduced by the speakers 22 and 32 according to the orientation detected by the sensor 73. The control unit 70 also sets the sensitivity of the microphone 12 according to the orientation detected by the sensor 73.

[0087] The microphone 12 is for collecting the voice of the helmet wearer. The second microphone 74 is for noise cancellation. An opening 75 leading to the second microphone 74 for capturing sound is formed in the center of the front surface 11F of the case 11. Thus, the first part 1 has the opening 11a for the microphone 12 formed on the back surface 11R that faces the face of the helmet wearer, and the opening 75 for the second microphone 74 formed on the opposite side, the front surface 11F.

[0088] The function of the multi-function button 15 (corresponding to the "operator") is the same as in the first embodiment. In the first embodiment, the multi-function button 15 was provided on the top surface 11T of the case 11 of the first part 1, but in this embodiment, in order to reduce the height of the device main body 7B, nothing is provided on the top surface 11T (corresponding to the "top surface") of the case 11, making it a flat surface. The multi-function button 15 is provided on the front surface 11F (corresponding to the "front exposed surface") of the case 11. In addition, in order to enable the multi-function button 15 to be operated with either the left or right hand, the multi-function button 15 is provided in the center in the left-right direction on the front surface 11F of the case 11. In addition, the multi-function button 15 is a push button.

[0089] 8, when the communication device 10B is attached to the bottom surface 104a of the opening 104, the sensor 73 detects that the top surface 11T of the case 11 is positioned upward and the bottom surface 11B of the case 11 is positioned downward. Then, the control unit 70 sets the left channel signal of the stereo signal to be output from the speaker 22 and the right channel signal to be output from the speaker 32. The control unit 70 also sets the sensitivity of the microphone 12 to the basic value.

[0090] When the communication device 10B is attached to the top surface 104b of the opening 104 as shown in Fig. 9, the sensor 73 detects that the top surface 11T of the case 11 is positioned downward and the bottom surface 11B of the case 11 is positioned upward. Then, the control unit 70 sets the left channel signal of the stereo signal to be output from the speaker 32 and the right channel signal to be output from the speaker 22. The control unit 70 also sets the sensitivity of the microphone 12 to a value higher than the basic value. That is, in the attachment example shown in Fig. 9, the distance from the helmet wearer's mouth to the microphone 12 is greater than in the attachment example shown in Fig. 8, so the sensitivity of the microphone 12 is set to a value higher than the basic value.

[0091] As described above, in this example, even when the communication device 10B is attached to the helmet 100 in one orientation, or even when it is attached upside down relative to the one orientation, the sensitivity of the left and right channels of the speakers 22, 32 and the microphone 12 is automatically set. This makes it easier to attach and replace the communication device 10B to the helmet 100.

[0092] Furthermore, when a communication device is attached to a motorcycle helmet and used while riding, there are problems such as wind noise, engine noise, etc. making it difficult to hear the voice from the speaker, or the helmet wearer's voice not reaching the other party clearly. To address these problems, the communication device 10B of this example can pick up the helmet wearer's voice with microphone 12 and pick up noise such as wind noise with second microphone 74 for noise cancellation. This can improve the ease of hearing voices while riding and the quality of calls.

[0093] Furthermore, as described above, in the communication device 10B of this example, the multi-function button 15 is provided on the front surface 11F of the case 11, and the device main body 7B is made low-profile, so that a wider field of view can be obtained when wearing the helmet 100 shown in Figures 8 and 9 than in Example 1. Note that while a low profile can also be achieved by providing the multi-function button 15 on the back surface 11R instead of the front surface 11F of the case 11, providing the multi-function button 15 on the front surface 11F provides better accessibility to the multi-function button 15. In other words, the multi-function button 15 can be pressed simply by lifting the shield 103 while wearing the helmet 100.

[0094] In the second embodiment described above, the top surface 11T of the case 11 was flat and had no components provided thereon in order to reduce the height of the device main body 7B. However, if an operator such as a touch switch does not protrude, the top surface 11T can be provided with an operator, thereby reducing the height. Furthermore, the multi-function button 15 is not limited to being provided in the center of the front surface 11F in the horizontal direction, and may be provided at any position on the front surface 11F. While at least one multi-function button is required, multiple buttons may also be provided. Furthermore, the multi-function button 15 is a push button, but the shape may be changed to a touch switch or a slide switch. [Example]

[0095] Next, a third embodiment of the present invention will be described with reference to Fig. 12. In Fig. 12, the same components as those in the first and second embodiments are denoted by the same reference numerals, and the description thereof will be omitted.

[0096] 12 is a diagram showing a device main body 7C of a communication device 10C according to a third embodiment of the present invention. This device main body 7C is provided with push-button type operators 76 and 77 on both the left and right sides of the multi-function button 15 on the front face 11F of the case 11. Other than this, the device main body 7C has the same configuration as the device main body 7B of the second embodiment.

[0097] In this way, in this example, a plurality of operators 76, 15, 77 are provided on the front surface 11F of the case 11, and these multiple operators 76, 15, 77 are arranged side by side. This allows the device main body 7C to be made lower in height than when multiple operators 76, 15, 77 are arranged vertically. [Example]

[0098] Next, a fourth embodiment of the present invention will be described with reference to Figures 13 to 16. In Figures 13 to 16, the same components as those in the first to third embodiments are denoted by the same reference numerals, and the description thereof will be omitted.

[0099] Fig. 13 is a diagram showing an example of how a communication device 10D according to a fourth embodiment of the present invention is attached to a helmet 100D. As shown in Fig. 13, the communication device 10D is attached to a bottom surface 104a of an opening 104 of the helmet 100D. When the helmet 100D shown in Fig. 13 is worn, the communication device 10D is located in front of the wearer's nose.

[0100] The helmet 100D shown in Fig. 13 is a full-face helmet. The helmet 100D has a ventilation hole 105 formed below the opening 104, i.e., in the part that covers the wearer's chin. Other than this, the helmet 100D has the same configuration as the helmet 100 of Examples 1 and 2.

[0101] 14, the communication device 10D includes a device main body 7 and a fixing part 8 (corresponding to a "helmet accessory"). The device main body 7 is the same as that in the first embodiment, and therefore a description thereof will be omitted.

[0102] Conventionally, full-face helmets have sometimes used helmet accessories called "breath guards" or "nose guards" to prevent the shield from fogging due to the wearer's breath. The fixing part 8 of this example has both the function of preventing the shield from fogging due to the wearer's breath and the function of holding the device main body 7 of the communication device 10D. The fixing part 8 is intended to be attached to the lower edge of the front opening of the full-face helmet. In the case of the helmet 100D shown in FIG. 13, it is attached to the bottom surface 104a of the opening 104.

[0103] As shown in Figures 15 and 16, the fixing part 8 has a fixing portion 80 that is inserted into the gap between the shell 101 and the liner 102 at the bottom surface 104a of the opening 104, a mounting portion 81 that is connected to the upper part of the fixing portion 80 and on which the device main body 7 is placed, two front walls 82 that stand upright from the front end of the mounting portion 81, and one rear wall 83 that stands upright from the rear end of the mounting portion 81.

[0104] The fixing part 80 has a plate part 86 hanging down from the front part of the mounting part 81, a plurality of ribs 87 formed on the front surface of the plate part 86 and extending from the mounting part 81 side to the lower part of the plate part 86, and grooves 88 between the ribs 87. The plate part 86 is curved along the curve of the helmet 100D. The plurality of ribs 87 and the plurality of grooves 88 are formed in the center of the plate part 86 in the left-right direction. The plurality of grooves 88 function as ventilation paths leading to the ventilation openings 105. That is, air outside the helmet 100D is sent into the helmet 100D through the ventilation openings 105 and the plurality of grooves 88.

[0105] The mounting portion 81 extends rearward in a plate-like shape from the upper end of the plate portion 86. The lower surface of the mounting portion 81 is placed on the bottom surface 104a of the opening 104. The device main body 7 is placed on the upper surface of the mounting portion 81. The mounting portion 81 is formed with recesses 85a, 85b, 85c, and 85d that accommodate the slide portions 71 and 72 and magnets 23 and 33 (corresponding to "protrusions") of the device main body 7. The slide portion 71 is accommodated in the recess 85a. The slide portion 72 is accommodated in the recess 85b. The magnet 33 is accommodated in the recess 85c. The magnet 23 is accommodated in the recess 85d. This allows the device main body 7 to be held stably.

[0106] The two front walls 82 are disposed apart in the left-right direction. These front walls 82 abut against the front surface 11F of the first part 1 of the device body 7. The rear wall 83 is formed to be wider than the front walls 82. The rear wall 83 abuts against the rear surface 11R of the first part 1 of the device body 7. In this way, the device body 7 is sandwiched between the two front walls 82 and the rear wall 83.

[0107] The rear wall 83 has a rear wall main body 83a that stands vertically from the rear end of the mounting portion 81, an upward protruding portion 83b that extends further upward from the upper end of the rear wall main body 83a and the center in the left-right direction, a forward protruding portion 83c that extends forward from the upper end of the upper protruding portion 83b, and a rear extension portion 83d that extends rearward, i.e., toward the wearer's nose, from the upper end of the rear wall main body 83a and a portion excluding the upper protruding portion 83b.

[0108] The rear wall main body 83a and the upward protrusion 83b abut against the rear surface 11R of the first part 1. The forward protrusion 83c abuts against the top surface 11T of the first part 1. That is, the upward protrusion 83b and the forward protrusion 83c are formed in a hook shape at the upper end portion of the rear wall main body 83a, and fit along the corner where the rear surface 11R and the top surface 11T of the first part 1 intersect.

[0109] A circular through-hole 84 penetrating in the front-to-rear direction is formed in the upper protruding portion 83b. This through-hole 84 overlaps with an opening 11a for the microphone 12 formed in the rear surface 11R of the first part 1, and functions as a sound hole leading to the microphone 12.

[0110] In the attached state shown in Fig. 14, the front wall 82 and the rear wall 83 restrict the front-to-rear movement of the device body 7. The mounting portion 81 and the forward protruding portion 83c restrict the up-and-down movement of the device body 7. Furthermore, the sliding portions 71, 72 and the magnets 23, 33 are housed in the recesses 85a, 85b, 85c, 85d, respectively, thereby restricting the left-to-right movement of the device body 7. In this way, the fixing part 8 can stably hold the device body 7 despite its simple configuration.

[0111] The fixing part 8 can be attached to the helmet 100D by inserting the fixing portion 80 into the gap between the shell 101 and the liner 102 at the bottom surface 104a of the opening 104, but the lower surface of the mounting portion 81 may also be attached to the bottom surface 104a with adhesive or double-sided tape. In this way, the work of attaching the fixing part 8 to the helmet 100D can be done very easily without the need for tools.

[0112] When attaching the device main body 7 to the fixed part 8, the front wall 82 and the rear wall 83 are slightly bent to widen the gap between them, and the device main body 7 is pushed between them. When removing the device main body 7 from the fixed part 8, the front wall 82 and the rear wall 83 are slightly bent to widen the gap between them, and the device main body 7 is then removed. In this way, the attachment and removal of the device main body 7 to and from the fixed part 8 can be performed very easily without the need for tools.

[0113] As described above, by using the fixing part 8 of this example, the device main body 7 can be easily attached to and replaced with the helmet 100D. Furthermore, by positioning the fixing part 8 and the device main body 7 in front of the nose of the helmet wearer, it is possible to prevent the breath of the helmet wearer from directly hitting the shield 103, and to suppress fogging of the shield 103.

[0114] Furthermore, while the device main body 7 is attached to the fixing part 8, the second part 2 and the third part 3 cannot be rotated relative to the first part 1. However, by preparing multiple types of fixing parts 8 that are suited to multiple types of helmets with different curves of the bottom surface 104a, the device main body 7 can be used in common with multiple types of helmets. In other words, the device main body 7 can be attached by adjusting the angles of the second part 2 and the third part 3 so that they fit the curve of each helmet.

[0115] In the fourth embodiment described above, the fixed part 8 has the front wall 82 and the rear wall 83, but the fixed part of the present invention may have at least one of the front wall 82 and the rear wall 83. For example, the rear wall 83 may be eliminated from the fixed part 8, and a separate fixture may be used instead of the rear wall 83 to hold the rear surface 11R of the first part 1. This allows the device body 7 to be held stably.

[0116] In the above-described fourth embodiment, an example in which the device main body 7 is attached to the fixed part 8 has been described, but the fixed part 8 can be attached to a device other than the device main body 7 as long as the size, outer shape, etc. are compatible. For example, the device main body 7B of the second embodiment and the device main body 7C of the third embodiment can be attached. [Example]

[0117] Next, a fifth embodiment of the present invention will be described with reference to Fig. 17. In Fig. 17, the same components as those in the first to fourth embodiments are given the same reference numerals and the description thereof will be omitted.

[0118] Fig. 17 is a diagram showing a communication device 10E according to a fifth embodiment of the present invention. The communication device 10E can be attached to the lower edge of the front opening of a full-face helmet. That is, the communication device 10E can be attached to the bottom surface 104a of the opening 104 of the helmet 100D, similar to the fourth embodiment (see Fig. 13).

[0119] The communication device 10E has a device main body 7E, a fixed part 80, and a connecting part 81E.

[0120] The device main body 7E is provided with a microphone 12, a secondary battery 13, a communication unit 14, speakers 22 and 23, etc., inside a block-shaped case 11E made of synthetic resin. That is, the device main body 7E has the same functions as the device main body 7 of Example 1. The device main body 7E also has a multi-function button 15 on the front surface 11F of the case 11E.

[0121] The fixing portion 80 has the same configuration as the fixing portion 80 of the fixing part 8 of Example 4. This fixing portion 80 can be inserted into the gap between the shell 101 and the liner 102 at the bottom surface 104a of the opening 104 of the helmet 100D shown in FIG.

[0122] The connecting portion 81E extends rearward in a plate-like shape from the upper end of the plate portion 86. This connecting portion 81E is integrated with the underside 11B of the case 11E. That is, the fixing portion 80 and the connecting portion 81E are originally molded as a single unit, and are molded as separate parts from the device main body 7E. In the completed state shown in FIG. 17, the fixing portion 80 and the connecting portion 81E are integrated with the device main body 7E. Various means can be used for this integration, such as adhesion with adhesive or double-sided tape, or fastening using screws.

[0123] The communication device 10E described above can be easily attached to or replaced in a helmet. Furthermore, by being positioned in front of the helmet wearer's nose, the communication device 10E can prevent the helmet wearer's breath from directly hitting the shield, thereby suppressing fogging of the shield. [Example]

[0124] Next, a sixth embodiment of the present invention will be described with reference to Fig. 18. In Fig. 18, the same components as those in the first to fifth embodiments are given the same reference numerals and the description thereof will be omitted.

[0125] 18 is a diagram showing a communication device 10F according to a sixth embodiment of the present invention. The communication device 10F can be attached to the lower edge of the front opening of a full-face helmet. That is, the communication device 10F can be attached to the bottom surface 104a of the opening 104 of the helmet 100D, similar to the fourth embodiment (see FIG. 13).

[0126] The communication device 10F has a device main body 7F, a fixed portion 80F, and a connecting portion 81F.

[0127] The device main body 7F comprises a first part 1F, a second part 2F connected to the first part 1F so that the angle can be adjusted, and a third part 3F connected to the first part 1F on the side opposite to the side to which the second part 2F is connected so that the angle can be adjusted.

[0128] The first part 1F has the same configuration as the first part 1 of the first embodiment, except that the multifunction button 15 is provided on the front surface 11F of the case 11 and the slide portions 71, 72 are not provided on the bottom surface 11B.

[0129] Second part 2F has the same configuration as second part 2 of Example 1, except that magnet 23 is not attached to the underside of case 21, and instead has plate portion 24 hanging down from the underside of case 21. Plate portion 24 is integrated with case 21. Like second plate portion 52 of Example 1, plate portion 24 is inserted into the gap between shell 101 and liner 102 at bottom surface 104a of opening 104.

[0130] Third part 3F has the same configuration as third part 3 of Example 1, except that magnet 33 is not attached to the underside of case 31, and instead has plate portion 34 hanging down from the underside of case 31. Plate portion 34 is integrated with case 31. Like second plate portion 62 of Example 1, plate portion 34 is inserted into the gap between shell 101 and liner 102 at bottom surface 104a of opening 104.

[0131] The fixing part 80F has a shape in which the left and right side portions are cut away, leaving a central portion of the fixing part 80 of Example 5. A plate portion 86F of the fixing part 80F is formed with a plurality of ribs 87 and a plurality of grooves 88. This fixing part 80F can be inserted into, for example, a gap between the shell 101 and the liner 102 in the bottom surface 104a of the opening 104 of the helmet 100D shown in FIG.

[0132] The connecting portion 81F extends rearward in a plate-like shape from the upper end of the plate portion 86F. This connecting portion 81F is integrated with the lower surface 11B of the case 11, as in the fifth embodiment. That is, the fixing portion 80F and the connecting portion 81F are originally molded as a single unit, and are molded as separate parts from the device main body 7F. In the completed state shown in FIG. 18, the fixing portion 80F and the connecting portion 81F are integrated with the device main body 7F.

[0133] The communication device 10F described above can be easily attached to or replaced in a helmet. Furthermore, by being positioned in front of the helmet wearer's nose, the communication device 10F can prevent the helmet wearer's breath from directly hitting the shield, thereby suppressing fogging of the shield.

[0134] Although the embodiments of the present invention have been described in detail above with reference to the drawings, the specific configurations are not limited to these embodiments, and the present invention also includes design changes within the scope of the present invention. The examples shown in the above figures can be combined with each other as long as there are no particular contradictions or problems in their purpose, configuration, etc. Furthermore, the contents of each figure can each be an independent embodiment, and the embodiment of the present invention is not limited to a single embodiment obtained by combining the figures. [Explanation of symbols]

[0135] 1. First Part 2. Second Part 3 Third Part 4,5,6 Fixed parts 7,7B,7C,7E,7F Device body 8 Fixing parts (helmet accessories) 10,10B,10C,10D,10E,10F Communication device 12. Microphone 15 Multi-function button (operator) 22,32 speakers 100,100D helmet 103 Shield 104 Opening

Claims

1. A communication device attached to a front opening of a helmet, The controls are provided on the front exposed surface A communication device comprising:

2. The operation element is provided at the center in the left-right direction of the front exposed surface.

2. The communication device according to claim 1.

3. A plurality of the operating elements are provided on the front exposed surface, and the operating elements are arranged side by side.

2. The communication device according to claim 1.

4. The operator is a push button.

2. The communication device according to claim 1.

5. The top surface is flat.

2. The communication device according to claim 1.

6. There are no controls on the top 2. The communication device according to claim 1.

7. a first part having a built-in microphone; a second part having a built-in speaker and connected to the first part so that the angle can be adjusted; and a third part having a built-in speaker and connected to the first part on the side opposite to the side to which the second part is connected so that the angle can be adjusted, The first part is provided with the operator.

7. The communication device according to claim 1, wherein the communication device is a communication device having a plurality of communication ports.

Images