Coordination system

Abstract

To improve user convenience in a coordination system for making a small-sized electrical apparatus and a display device coordinate through communication connection, the display device having a supporting function for supporting use of the small-sized electrical apparatus using a display unit.SOLUTION: A coordination system makes small-sized electrical apparatuses 1, 2 including function units 12, 32 for a human body and a display device 5 including a display unit 52 coordinate. The small-sized electrical apparatuses 1, 2 and the display device 5 comprise communication interfaces 24, 64 for establishing mutual connection, respectively. The display device 5 has a supporting function for supporting use of the small-sized electrical apparatuses 1, 2 using the display unit 52. The supporting function of the display device 5 includes mirroring means for making the display unit 52 be available as a mirror. The mirroring means is configured to display a moving picture imaged by a camera 53 on the display unit 52 in real time. The display device 5 has a zoom function for the camera 53, the zoom function being controlled depending on the size of a face region in the moving picture.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an interlocking system that connects and interlocks a small electrical device such as an electric razor or beauty appliance applied to the human body and a display device capable of image display typified by a mobile communication terminal via a communication interface.

Background Art

[0002] Connecting and interlocking this type of small electrical device and display device through communication is disclosed, for example, in Patent Document 1 previously proposed by the applicant. Therein, a skin care device as a small electrical device is provided with a receiving unit for communication, and a smartphone as a display device is provided with a transmitting unit for communication. A switch for controlling the electrode unit (operating unit) of the skin care device is disposed on the smartphone, and the user can operate the switch of the smartphone while receiving treatment with the skin care device to select the type and intensity level of the skin care operation of the device.

[0003] Further, the mobile phone (display device) disclosed in Patent Document 2 is provided with a mirroring means for reflecting the user's face on the display (display unit) and making the display usable as a mirror. The mirroring means therein is configured by the combined function of a microcomputer built into the mobile phone, a mirroring dedicated program downloaded to the mobile phone from a content provider via a communication network, and hardware components such as a camera and a half mirror provided in the mobile phone.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] An object of the present invention is to improve user convenience in an interlocking system that communicatively connects and interlocks a small electrical device and a display device, wherein the display device has an auxiliary function of assisting the use of the small electrical device using a display unit.

Means for Solving the Problems

[0006] The present invention is an interlocking system that interlocks a small electrical device 1·2 having a functional unit 12·32 for the human body and a display device 5 having a display unit 52. The small electrical device 1·2 and the display device 5 are each provided with a communication interface 24·64 for establishing a connection with each other. The display device 5 has an auxiliary function of assisting the use of the small electrical device 1·2 using the display unit 52. The auxiliary function of the display device 5 includes a mirroring means that makes the display unit 52 available as a mirror, and the mirroring means is configured to display the video captured by the camera 53 on the display unit 52 in real time. The display device 5 is provided with a zoom function of the camera 53, and the zoom function is characterized in that it is controlled by the size of the face area in the video.

[0007] In the present invention, the zoom function of the camera 53 performs zooming in when the face area becomes relatively large.

[0008] In the present invention, the zoom function of the camera 53 performs zooming out when the face area becomes relatively small.

[0009] The present invention relates to an interlocking system that interlocks a small electrical device 1·2 having functional parts 12·32 for the human body and a display device 5 having a display part 52. The small electrical device 1·2 and the display device 5 are each provided with a communication interface 24·64 for establishing a connection with each other. The display device 5 is provided with an auxiliary function for assisting the use of the small electrical device 1·2 using the display part 52. The auxiliary function of the display device 5 includes mirroring means that enables the display part 52 to be used as a mirror, and the mirroring means is configured to display the video captured by the camera 53 on the display part 52 in real time. The display device 5 is provided with a zoom function of the camera 53, and the zoom function is characterized in that it is controlled according to the expression of the face area in the video.

[0010] In the present invention, the zoom function of the camera (53) performs a zoom-in when the face area is recognized as a smiling face.

[0011] In the present invention, the zoom function of the camera (53) performs a zoom-out when the face area is recognized as an angry face.

Advantages of the Invention

[0012] An interlocking system that interlocks a small electrical device 1·2 having functional parts 12·32 for the human body and a display device 5 having a display part 52. The small electrical device 1·2 and the display device 5 are each provided with a communication interface 24·64 for establishing a connection with each other. The display device 5 is provided with an auxiliary function for assisting the use of the small electrical device 1·2 using the display part 52. The auxiliary function of the display device 5 includes mirroring means that enables the display part 52 to be used as a mirror, and the mirroring means is configured to display the video captured by the camera 53 on the display part 52 in real time. The display device 5 is provided with a zoom function of the camera 53. When the zoom function is controlled by the size of the face area in the video, the user can improve the convenience of the small electrical device 1·2.

[0013] When the zoom function of the camera 53 performs a zoom-in when the face area becomes relatively large, the user can improve the convenience of the small electrical device 1·2.

[0014] When the zoom function of the camera 53 performs a zoom-out when the face area becomes relatively small, the user can improve the convenience of the small electric devices 1 and 2.

[0015] An interlocking system that interlocks a small electric device 1 or 2 having functional parts 12 and 32 for the human body with a display device 5 having a display unit 52. The small electric device 1 or 2 and the display device 5 each include a communication interface 24 and 64 for establishing a connection with each other. The display device 5 has an auxiliary function for assisting the use of the small electric device 1 or 2 using the display unit 52. The auxiliary function of the display device 5 includes mirroring means that enables the display unit 52 to be used as a mirror. The mirroring means is configured to project the video captured by the camera 53 onto the display unit 52 in real time. When the display device 5 has a zoom function for the camera 53 and the zoom function is controlled according to the expression of the face area in the video, the user can improve the convenience of the small electric device 1 or 2.

[0016] When the zoom function of the camera 53 performs a zoom-in when the face area is recognized as a smiling face, the user can improve the convenience of the small electric devices 1 and 2.

[0017] When the zoom function of the camera 53 performs a zoom-out when the face area is recognized as an angry face, the user can improve the convenience of the small electric devices 1 and 2.

Brief Description of the Drawings

[0018]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

Figure 18

Figure 19

Figure 20

Mode for Carrying Out the Invention

[0019] (Example 1) Example 1 (the present invention) applied to the interlocking system of an electric shaver and a smartphone will be described with reference to FIGS. 1 to 18. In this example, up, down, left, and right follow the cross arrows shown in FIG. 1 and the up, down, left, and right indications marked in the vicinity of each arrow.

[0020] In FIGS. 1 and 2, an electric shaver (small electric device) 1 includes a vertically long main body case 10 that also serves as a grip, and a shaver head 11 supported above the main body case 10. On the upper part of the shaver head 11, an outer blade (cutting blade) 13 and an inner blade (cutting blade) 14 that constitute a functional part 12 for the facial muscles (human body) are arranged. On the surface of the main body case 10, a switch button 15 that can be pushed inward is provided. Inside the main body case 10, a motor 16 as a driving source for the inner blade 14, a vertically long control board 17, and a secondary battery (battery) 18 that is the power source for the entire electric shaver 1 are accommodated. On the control board 17, a drive switch (operation switch) 21 for turning on the power operated by the switch button 15, an acceleration sensor 22 and a gyro sensor 23 for detecting the posture of the electric shaver 1, a communication interface 24 operating according to the Bluetooth communication standard, a control unit 25 for controlling the entire electric shaver 1 including these, etc. are mounted. Note that the drive switch (operation switch) 21 is not limited to a push type and may be a slide type.

[0021] The smartphone (display device) 5 includes a thin housing 50 whose vertical dimension is larger than its horizontal dimension. On the front surface 51 of the housing 50, a touch panel type display (display unit) 52 that occupies most of it is arranged. A camera 53 and a speaker 54 are arranged at the upper left and right center of the front surface 51, and an LED (lighting device) 56 is arranged to the right of both of them 53 and 54. Inside the housing 50, a vertically long control board 57, a vibrator 59, and a battery pack (not shown) which is the overall power source of the smartphone 5 are accommodated. In addition to a wireless interface for communicating with a base station, the control board 57 is equipped with a memory 61 for storing various programs and data, an acceleration sensor 62 and a gyro sensor 63 for detecting the posture of the smartphone 5, a communication interface 64 operating according to the Bluetooth standard, a control unit 65 for controlling the entire smartphone 5 including these, and the like.

[0022] In the memory 61 of the smartphone 5, a camera program for displaying the video captured by the camera 53 on the display 52 is stored. The camera program includes a zoom function for enlarging and reducing the video captured by the camera 53 and a face recognition function for detecting a face area from the video captured by the camera 53. The method of zooming by the zoom function may be either optical zoom or digital zoom, or both.

[0023] In addition, the memory 61 stores an auxiliary application, which is an application program that assists the user in using the electric razor 1. The auxiliary application is provided by the manufacturer of the electric razor 1 and can be downloaded to the smartphone 5 via the Internet from a server operated by the manufacturer. The auxiliary application includes a mirroring means for making the display 52 available as a mirror, a video stilling means for stilling the video reflected on the display 52, and an illumination control means for controlling the lighting state of the LED 56. The auxiliary application also includes a zoom control means for controlling the zoom function of the camera 53, an illustration adding means for adding an auxiliary illustration 70 (see FIG. 10) to the face area reflected on the display 52, and an inversion instruction means for instructing the user to invert the smartphone 5 vertically. Furthermore, the auxiliary application includes a device state notification means for displaying the device state of the electric razor 1 on the display 52, an electric device control means for transmitting a control signal for controlling the electric razor 1 to the control unit 25, and an instruction manual display means for displaying the instruction manual of the electric razor 1 on the display 52. This auxiliary application is a resident application program and remains in a standby state in the background until its operation is started in conjunction with the ON operation of the drive switch 21 of the electric razor 1.

[0024] (Mirroring means) The mirroring means activates a camera program stored in the memory 61, starts shooting by the camera 53, and projects the video shot by the camera 53 onto the display 52. During the execution of the camera program, since the face of the user facing the front 51 of the smartphone 5 is shot by the camera 53 and projected onto the display 52, the user can use the display 52 as if it were a mirror. The mirroring means is the core of the auxiliary application and starts operating simultaneously with the activation of the auxiliary application.

[0025] (Video stilling means) The video stilling means stills the video shown on the display 52 according to the user's operation during the operation of the mirroring means. Specifically, when the user turns off the drive switch 21 during the driving of the electric razor 1, the video stilling means stills the video shown on the display 52, and when the user turns on the drive switch 21 again, the video stilling means releases the still state of the video. Note that the fact that the drive switch 21 has been operated is transmitted from the control unit 25 of the electric razor 1 to the smartphone 5 via the communication interfaces 24 and 64. The user can easily check the relevant part by turning off the drive switch 21 to still the video with the part of the face to be checked shown on the camera 53, and moving the still display 52 to an easily visible position such as in front of the face.

[0026] (Illumination control means) The illumination control means controls to turn on the LED 56 of the smartphone 5 in a state where the connection between the electric razor 1 and the smartphone 5 is established. The LED 56 has a plurality of lighting patterns. In this embodiment, when the electric razor 1 is driven (when a video is shown on the display 52), the LED 56 is turned on in the first lighting pattern, and when the electric razor 1 stops (when the video on the display 52 is in a still state), the LED 56 is turned on in the second lighting pattern. Also in this embodiment, the first lighting pattern is a constantly-on state, and the second lighting pattern is a blinking state of the same color. However, for example, both lighting patterns may be in a constantly-on state and their color tones (emission colors) may be made different. In this embodiment, since the camera 53 and the LED 56 are arranged on the same side (front 51) of the smartphone 5, when using the electric razor 1 and the smartphone 5 in a dim place, the LED 56 can illuminate the object to be photographed by the camera 53, that is, the user's face. Therefore, regardless of the brightness of the place where the electric razor 1 and the smartphone 5 are used, the user's face can always be clearly shown on the display 52, improving the convenience for the user. Note that the illumination device 56 is not limited to being built into the smartphone 5 as in this embodiment, and also includes a concept of being externally attached to the smartphone 5 and controlled by an auxiliary application.

[0027] As shown in the flowchart of FIG. 3, when the user turns on the drive switch 21 to turn on the power of the electric razor 1 (YES in step S1), the motor 16 starts and the functional unit 12 starts to drive. At the same time, the communication interface 24 of the electric razor 1 becomes effective (step S2), and a wireless connection with the communication interface 64 of the smartphone 5 is established. Note that the smartphone 5 is turned on at the time of turning on the power of the electric razor 1, and its communication interface 64 is also activated. Also, the auxiliary application that assists in the use of the electric razor 1 is in a standby state in the background.

[0028] Upon receiving the establishment of the connection with the electric razor 1, the auxiliary application checks the state of the control unit 65 of the smartphone 5 and displays a push notification on the display 52. The display of this push notification corresponds to the activation of the auxiliary application (step S3). The user can move the auxiliary application to the foreground and display the screen of the auxiliary application on the entire display 52 by tapping this push notification. When the auxiliary application is activated in the foreground, the mirroring means starts to operate, and the video captured by the camera 53 is projected onto the display 52 (step S4). Also, the lighting control means lights the LED 56 in the first lighting pattern (step S5).

[0029] When the mirroring means starts to operate, the video stilling means enters a standby state and waits for the drive switch 21 of the electric razor 1 to be turned off (step S6). When the drive switch 21 is turned off and the motor 16 stops (YES in step S6), the video stilling means stills the video projected on the display 52 (step S7), and the lighting control means switches the LED 56 to the second lighting pattern (step S8). When the drive switch 21 is turned on and the motor 16 starts again (YES in step S9), the video stilling means releases the still state of the video (step S10), the lighting control means switches the LED 56 to the first lighting pattern (step S5), and waits for the drive switch 21 to be turned off again in step S6.

[0030] Note that the control unit 25 of the electric shaver 1 continues the active state of the communication interface 24 immediately after the drive switch 21 is turned off, and invalidates the communication interface 24 when a predetermined time (10 minutes in this embodiment) has elapsed since the turn-off operation. However, the control unit 25 has a timer function for stopping the motor 16 when the continuous drive time of the motor 16 exceeds a predetermined time (5 minutes in this embodiment). When the motor 16 is stopped by this timer function, the communication interface 24 is invalidated after a time shorter than the predetermined time (5 minutes in this embodiment) has elapsed since the stop time.

[0031] The smartphone 5 stores a protection program that turns off the display 52 when the user is considered to have left the smartphone 5 unattended for a long time. During the execution of the auxiliary application, when the above-described video stilling means operates for a long time, that is, when the video shown on the display 52 remains still for a long time, there is a possibility that the user left the smartphone 5 without turning off the display 52 after finishing shaving and stopping the electric shaver 1.

[0032] On the other hand, when the video stilling means is not operating and a video is shown on the display 52, that is, in the mirroring state of the display 52, it is highly likely that the user is shaving with the electric shaver 1 while using the smartphone 5 like a hand mirror. However, even in the mirroring state, if the user's face or the electric shaver 1 is not shown on the camera 53 for a long time, there is a possibility that the user left the smartphone 5 with the electric shaver 1 in the driving state. In these cases, the protection program turns off the display 52 to avoid unnecessary consumption of the battery pack.

[0033] The specific control procedure by the protection program is shown in the flowchart of FIG. 4. When the auxiliary app is launched in the foreground (at this time, the mirroring means is operating and the video stilling means is not operating), the protection program starts timing with a timer (step S11). The subsequent protection program waits for a predetermined time (5 minutes in this embodiment) to elapse since the start of timing, for the video stilling means to operate and the display 52 to become still, or for the user's face or the electric razor 1 to be detected by the camera 53 (steps S12 to S14).

[0034] If the user's face or the electric razor 1 is detected from the video shown on the display 52 before the predetermined time has elapsed (NO in steps S12 to S13, YES in step S14), since it is assumed that the user is using the smartphone 5, the process returns to step S11 to reset the timer and start timing again. On the other hand, if the user's face or the electric razor 1 is not detected, the display 52 does not become still, and the predetermined time has elapsed (NO in steps S13 to S14, YES in step S12), since it is assumed that the user has left the smartphone 5 with the powered-on electric razor 1, the protection program proceeds to step S15 to turn off the display 52.

[0035] When the video stilling means operates and the display 52 is still (YES in step S13), the process proceeds to step S16 to reset the timer and start timing again. If a predetermined time (5 minutes in this embodiment) elapses after starting the timing before the still state is released (NO in step S18, YES in step S17), it is assumed that the user finished shaving and stopped the electric shaver 1, and then left the smartphone 5 without turning off the display 52. Therefore, the protection program proceeds to step S15 to turn off the display 52. On the other hand, if the still state is released before the predetermined time elapses (NO in step S17, YES in step S18), the process returns to step S11 to reset the timer and start timing again. In addition to the above, when the motor 16 stops due to the timer function of the electric shaver 1, the protection program can turn off the display 52.

[0036] The timing chart of FIG. 5 shows an example of a situation where the drive switch 21 of the electric shaver 1 and the auxiliary app of the smartphone 5 operate in conjunction. When the drive switch 21 is turned on at time point t1, the motor 16 starts in the electric shaver 1 and the communication interface 24 becomes active. At the same time, on the smartphone 5, the auxiliary app waiting in the background causes a push notification to be displayed on the display 52. Then, through a tap operation by the user, the auxiliary app is launched in the foreground and the display 52 is mirrored by the mirroring means. Also, the LED 56 lights up in the first lighting pattern. At the next time point t2 (t2 - t1 < 5 minutes), when the drive switch 21 is turned off, the motor 16 of the electric shaver 1 stops. At the same time, on the smartphone 5, the video reflected on the display 52 becomes still and the LED 56 switches to the second lighting pattern.

[0037] At the next time point t3 (t3 - t2 < 5 minutes), when the drive switch 21 is turned on, the motor 16 of the electric razor 1 restarts. At the same time, on the smartphone 5, the still state of the video by the video still means is released, the display 52 is mirrored again, and the LED 56 switches to the first lighting pattern. At the next time point t4 (t4 - t3 < 5 minutes), when the drive switch 21 is turned off, the motor 16 stops as in the previous time point t2, the video on the display 52 freezes, and the LED 56 switches to the second lighting pattern. At the next time point t5 (t5 - t4 = 5 minutes), the display 52 is turned off by the above-described protection program. At the next time point t6 (t6 - t4 = 10 minutes), the communication interface 24 of the electric razor 1 is invalidated. Also, on the smartphone 5, in response to the disconnection from the electric razor 1, the auxiliary app automatically shifts to the standby state in the background, and the LED 56 is turned off. Note that the timing of turning off the LED 56 may be the time point t5 when the display 52 is turned off.

[0038] The timing chart in FIG. 6 shows the case where the electric razor 1 is left together with the smartphone 5 while the auxiliary application is being executed with the electric razor 1 in the driving state. The time point t12 when the electric razor 1 and the smartphone 5 are left is set to be several minutes (2 to 3 minutes) after the time point t11 when the drive switch 21 is turned on. In the electric razor 1, at the time point t13 which is 5 minutes after the on operation of the drive switch 21 (time point t11), the motor 16 automatically stops, and further at the time point t15 which is 5 minutes after the time point t13, the communication interface 24 is invalidated. In the smartphone 5, after the time point t12 when it is left by the user, since the user's face or the electric razor 1 cannot be detected by the camera 53, at the time point t14 which is 5 minutes after the time point t12, the display 52 is turned off by the above-described protection program. Also, at the time point t15 when the connection with the electric razor 1 is disconnected, the auxiliary application automatically shifts to the standby state in the background, and the LED 56 is turned off. Note that, before reaching the time point t14, that is, before 5 minutes have elapsed since the time point t12, if the user's face or the electric razor 1 is detected by the camera 53, the timer related to the turning off of the display 52 is reset. Also, the timing of turning off the display 52 by the protection program of the smartphone 5 may be the time point t13 when the motor 16 of the electric razor 1 automatically stops. The timing at which the communication interface 24 is invalidated, the timing at which the auxiliary application shifts to the standby state in the background, and the timing at which the LED 56 is turned off may also be the time point t13.

[0039] The timing chart in FIG. 7 shows another control method by the auxiliary app and the protection program of the smartphone 5. From the time point t21 when the drive switch 21 is turned on to the time point t22 when the user's face or the electric razor 1 cannot be detected by the camera 53, it is the same as the time points t11 to t12 in FIG. 6. Here, at the time point t23 which is one minute after the time point t22, the protection program turns off the display 52, and the electric device control means (specifically described later) of the auxiliary app sends a control signal for decelerating the motor 16 to the control unit 25 of the electric razor 1. Then, at the time point t24 which is one minute after the time point t23, the motor 16 stops in the electric razor 1, the communication interface 24 becomes invalid, the auxiliary app on the smartphone 5 shifts to the standby state in the background, and the LED 56 turns off. Before reaching the time point t23, that is, before one minute has elapsed from the time point t22, if the user's face or the electric razor 1 is detected by the camera 53, the timer related to the turning off of the display 52 is reset. Also, instead of decelerating the motor 16 at the time point t23, the motor 16 may be stopped. In that case, the invalidation of the communication interface 24, the shift of the auxiliary app to the standby state, and the turning off of the LED 56 can also be performed at the time point t23.

[0040] The operation for controlling the video still means is not limited to the switch operation of the above-described electric razor 1. For example, it may be a tap operation on the display 52 of the smartphone 5 by the user, or a specific movement operation such as the user shaking the electric razor 1 or the smartphone 5. These movement operations are detected by the acceleration sensors 22·62 and the gyro sensors 23·63 built into the electric razor 1 and the smartphone 5 respectively. The content of the movement operation of the electric razor 1 is transmitted from the control unit 25 to the smartphone 5 via the communication interfaces 24·64.

[0041] (Zoom control means) The zoom control means controls the zoom function of the camera 53 in conjunction with the movement operations of the electric shaver 1 and the smartphone 5 by the user. The movement operation of the electric shaver 1 is detected by the acceleration sensor 22 and the gyro sensor 23 built into the electric shaver 1, and the content thereof is transmitted from the control unit 25 to the smartphone 5 via the communication interfaces 24 and 64. Based on the content of this movement operation, the zoom control means controls the zoom function of the camera 53. For example, when the electric shaver 1 is moving with a relatively large stroke or when the electric shaver 1 is moving relatively fast, it is assumed that the user is shaving a wide range of facial hair. Therefore, the zoom control means zooms out the camera 53 to display a wide range of the face on the display 52. Conversely, when the electric shaver 1 is moving with a relatively small stroke or when the electric shaver 1 is moving relatively slowly, it is assumed that the user is focusing on shaving a part of the facial hair. Therefore, the zoom control means zooms in the camera 53 to magnify and display a part of the face on the display 52.

[0042] Also, it is possible to analyze the video captured by the camera 53 to detect the movement operation of the electric shaver 1 by the user. To facilitate this detection, a plurality of landmarks 28 that can be identified in the video are provided on the outer surface of the electric shaver 1 (see FIG. 8). The landmarks 28 are mainly distributed around the functional unit 12 so that some of the landmarks 28 are always reflected in the camera 53 regardless of the grip posture of the electric shaver 1 by the user. By observing the movement of each landmark 28 in the video, the movement stroke and movement speed of the electric shaver 1 can be detected, and the zoom function can be controlled in the same manner as above based on their magnitudes.

[0043] Furthermore, as shown in FIG. 8, when the face recognition function of the camera program is also used, the positional relationship between the face area in the video and each of the marks 28 of the electric razor 1 is compared, and the part of the face that the functional part 12 of the electric razor 1 faces can be detected. The zoom function of the camera 53 may be controlled according to the part of the face detected by this method. In FIG. 8, the functional part 12 faces directly under the user's nose, which is detected from the positions of the two marks 28 around the functional part 12 in the face area. When the functional part 12 is located under the nose, the zoom control means, for example, zooms in the camera 53 and enlarges and displays under the nose on the display 52. This is because usually, it is rare to shave the beard under the nose and other parts at the same time, and when shaving the beard under the nose, one often focuses on this.

[0044] On the other hand, the movement operation of the smartphone 5 is detected by the acceleration sensor 62 and the gyro sensor 63 built in the smartphone 5, and the zoom function is controlled based on the content of this movement operation. Specifically, for example, as shown in FIG. 9(a), when the front face 51 of the smartphone 5 is at an angle close to vertical, it is assumed that the user is moving the smartphone 5 in front of the face to project the entire face onto the display 52. Therefore, the zoom control means zooms out the camera 53. Conversely, as shown in FIG. 9(b), when the front face 51 of the smartphone 5 is at about 45° with respect to the horizontal plane, it is assumed that the user is moving the smartphone 5 diagonally below the face to project only a part of the face, such as the jaw, onto the display 52. Therefore, the zoom control means zooms in the camera 53. Also, when the sensors 62 and 63 detect that the user has performed a specific movement operation such as shaking the smartphone 5, control may be performed to change the zoom magnification of the camera 53.

[0045] In addition, by using the face recognition function of the camera program, it is also possible to detect the movement operation of the smartphone 5. That is, when the face area in the video captured by the camera 53 becomes larger, it can be considered that the user has brought the smartphone 5 closer to the face. In this case, the zoom control means, for example, zooms in the camera 53 and enlarges and displays a part of the face on the display 52. Conversely, when the face area in the video becomes smaller, it can be considered that the user has moved the smartphone 5 away from the face. In this case, the zoom control means, for example, zooms out the camera 53 and displays a wider range of the face on the display 52. Furthermore, the zoom function of the camera 53 may be controlled according to the expression of the face area in the video. For example, when the face area is recognized as a smiling face, the zoom control means zooms in the camera 53, and when the face area is recognized as an angry face, the zoom control means zooms out the camera 53.

[0046] The above zoom control means may start operating simultaneously with the activation of the auxiliary application, or may start operating according to the user's wish after the activation of the auxiliary application. Note that the operation for controlling the zoom control means is not limited to the above-described movement operations of the electric razor 1 and the smartphone 5. For example, in conjunction with a switch operation on the side of the electric razor 1, the zoom function of the camera 53 can be controlled. As an example of the switch, a control switch for the rotation speed of the motor 16 provided in the electric razor 1 can be cited. For example, when an operation to lower the rotation speed is performed, since it is assumed that the user is carefully shaving the beard of a part of the face, the zoom control means zooms in the camera 53. Also, the zoom function of the camera 53 can be directly controlled by the user operating the display 52 or the side button of the smartphone 5.

[0047] (Illustration addition means) As shown in FIG. 10, the illustration adding means adds an auxiliary illustration 70 to the face area shown on the display 52 of the smartphone 5. The auxiliary illustration 70 according to this embodiment is composed of an untreated illustration 71 representing exaggerated whiskers and a treated illustration 72 representing that the whiskers have been shaved off. When the illustration adding means starts operating, it adds the untreated illustration 71 to the area under the nose, the chin, both cheeks, and the range of the sideburns of the face area detected by the face recognition function. When it is determined that the user has finished shaving each part of the whiskers, it changes the untreated illustration 71 of that part to the treated illustration 72. When all the untreated illustrations 71 on the display 52 have changed to the treated illustrations 72, the user can confirm that all the whiskers have been shaved off (there is no remaining stubble).

[0048] The completion of shaving the whiskers of each part of the face is detected by using the mark 28 on the outer surface of the electric shaver 1. As described above in the item of the zoom control means, by comparing the positional relationship between the face area in the video and each mark 28 of the electric shaver 1, the part of the face facing the functional part 12 of the electric shaver 1 can be detected. When the number of times the functional part 12 faces or passes through a part of the face reaches a predetermined number of times, the illustration adding means determines that the shaving of the whiskers of that part is completed and changes the untreated illustration 71 to the treated illustration 72.

[0049] The illustration addition means may start operating simultaneously with the startup of the auxiliary app, or may start operating according to the user's wishes after the startup of the auxiliary app. Also, the auxiliary illustration 70 may be composed of only one of the unprocessed illustration 71 and the processed illustration 72. For example, when the auxiliary illustration 70 is composed of only the unprocessed illustration 71, the illustration addition means sequentially deletes the unprocessed illustration 71 starting from the portion where it is determined that the beard shaving has been completed. The user can confirm that all the beards have been shaved when all the unprocessed illustrations 71 have disappeared from the display 52. Furthermore, the auxiliary illustration 70 can include an in-process illustration indicating that the process is in progress. For example, assuming that the auxiliary illustration 70 includes a plurality of in-process illustrations in which the beard is gradually thinned compared to the unprocessed illustration 71, each time the functional unit 12 of the electric shaver 1 passes through a part of the face once, the auxiliary illustration 70 of that part can be changed to an in-process illustration with a thinner beard.

[0050] (Inversion instruction means) The inversion instruction means instructs the user who uses the auxiliary app with the smartphone 5 in the normal posture to invert the smartphone 5 vertically. The normal posture is the posture in which the camera 53 and the LED 56 are located at the upper part of the smartphone 5 as shown in FIG. 1. When the smartphone 5 is in the inverted posture with the top and bottom reversed, since the camera 53 is located at the lower part of the smartphone 5, it becomes easier to photograph the lower part of the face where the beard grows, particularly the area under the chin. Note that whether the smartphone 5 is in the normal posture or the inverted posture is detected by the built-in gyro sensor 63.

[0051] For example, as shown in FIG. 11(a), when the smartphone 5 is in the normal posture, inverted characters that are upside down can be displayed on the display 52, and this can be used as the inversion instruction means. When the user who sees the inverted characters intuitively inverts the smartphone 5 vertically, as shown in FIG. 11(b), normal characters in the correct orientation are displayed on the display 52. Note that since the normal characters in FIG. 11(b) may get in the way when reflecting the user's face on the display 52, they may disappear as time passes or may be omitted.

[0052] Also, as shown in Fig. 12(a), when the smartphone 5 is in its normal posture, characters such as "Please turn it over" that directly instruct the user to turn the smartphone 5 upside down can be displayed on the display 52, and this can be used as the inversion instruction means. When the user turns the smartphone 5 upside down according to this character, as shown in Fig. 12(b), characters indicating that the posture of the smartphone 5 is appropriate are displayed on the display 52. However, for the same reason as the normal characters in Fig. 11(b), these characters may disappear over time or may be omitted. Instead of the characters in Fig. 12(a), symbols such as a U-shaped arrow may be displayed, and this can also be used as the inversion instruction means.

[0053] Also, as shown in Fig. 13(a), when the smartphone 5 is in its normal posture, the entire video reflected on the display 52 can be turned upside down and used as the inversion instruction means. When the user who sees their upside-down face intuitively turns the smartphone 5 upside down, as shown in Fig. 13(b), a video in the correct orientation is displayed on the display 52. Here too, similar to Fig. 12(b), characters indicating that the posture of the smartphone 5 is appropriate may be displayed.

[0054] (Device status notification means) As shown in Fig. 14, the device status notification means displays the device status such as the remaining battery level of the electric razor 1 on the display 52. This display is composed of a battery level display 75 indicating the remaining amount of the secondary battery 18 of the electric razor 1, a replacement display 76 indicating the replacement time of the outer blade 13 and the inner blade 14, a cleaning display 77 indicating the cleaning time of the functional part 12 including the lint collection chamber, a load display 78 indicating the magnitude of the load acting on the functional part 12, a time display 79 displaying the continuous use time of the electric razor 1, and the like. The device status notification means starts operating simultaneously with the activation of the auxiliary application, but can also be stopped according to subsequent user operations.

[0055] The battery level display 75 consists of a numerical value indicating the remaining amount of the secondary battery 18 and five-step graduations above and below, and the color tone changes from green → yellow → red as the remaining amount of the battery decreases. Information regarding the remaining amount of the secondary battery 18 is transmitted from the control unit 25 of the electric razor 1 to the smartphone 5 via the communication interfaces 24 and 64. When the remaining battery level falls below a predetermined ratio (e.g., 20%), the device status notification means changes the color tone of the battery level display 75 to red, drives the vibrator 59 of the smartphone 5, and further lights the LED 56 in an emergency pattern to notify the user that the remaining battery level is low.

[0056] The replacement display 76 does not light up when the blades 13 and 14 do not need to be replaced, and lights up as the replacement time approaches. The control unit 25 of the electric razor 1 manages the cumulative usage time since the previous replacement for each of the outer blade 13 and the inner blade 14, and when this cumulative usage time reaches a predetermined time, it transmits to the smartphone 5 that the replacement time of the blades 13 and 14 is approaching. Upon receiving this, the device status notification means lights up the replacement display 76 for the blades 13 and 14 whose replacement time is approaching on the display 52, drives the vibrator 59, and further lights the LED 56 in an emergency pattern to prompt the user to replace the blades 13 and 14. After the user replaces the blades 13 and 14, for example, if the replacement display 76 on the display 52 is long-pressed, the device status notification means considers that the replacement of the blades 13 and 14 is completed, turns off the replacement display 76, and transmits to the control unit 25 of the electric razor 1 that the replacement of the blades 13 and 14 is completed. The control unit 25 that receives this resets the cumulative usage time for the replaced blades 13 and 14. Note that the approach of the replacement time of the blades 13 and 14 may be determined based on the number of on / off operations of the drive switch 21 in addition to the cumulative usage time.

[0057] The cleaning indicator 77 also does not light up when cleaning of the functional unit 12 is not required, and lights up as the cleaning time approaches. An optical sensor for detecting the accumulation state of lint is provided in the lint storage chamber that constitutes the functional unit 12. When the accumulation state of lint exceeds a predetermined reference value, the control unit 25 transmits to the smartphone 5 that the cleaning time is approaching. Upon receiving this, the device status notification means lights up the cleaning indicator 77 on the display 52, drives the vibrator 59, and further lights up the LED 56 in an emergency pattern to prompt the user to clean the functional unit 12. When the user performs cleaning and the accumulation state of lint becomes equal to or less than a predetermined value, the control unit 25 transmits to the smartphone 5 that the cleaning is completed, and upon receiving this, the device status notification means turns off the cleaning indicator 77. Note that the approach of the cleaning time of the functional unit 12 may be determined based on, in addition to the accumulation state of lint, the cumulative usage time since the previous cleaning, or the number of times the drive switch 21 has been turned on and off.

[0058] The load indicator 78 prompts the user to adjust the strength of the force with which the functional unit 12 is pressed against the facial skin by displaying the magnitude of the load acting on the functional unit 12 of the electric shaver 1. There is a correlation between the pressing force of the functional unit 12 and the magnitude of the load, and the greater the pressing force, the greater the load. Therefore, by displaying the magnitude of the load of the functional unit 12 on the display 52, the user can be informed of the strength of the pressing force at that time. By performing beard shaving while checking the load indicator 78, the user can always maintain the pressing force of the functional unit 12 at an appropriate strength and reduce the burden on the facial skin.

[0059] As an index of the magnitude of the load on the functional unit 12, the load current flowing through the motor 16 is adopted. The greater the load on the functional unit 12, the greater the value of the load current. The control unit 25 of the electric razor 1 monitors the magnitude of this load current and transmits it to the smartphone 5. The load display 78 consists of a major arc-shaped scale representing the magnitude of the load and an indicator needle pointing to a point on the scale. From the lower left to the lower right of the scale, there are set in order a low load zone (green) indicating a small load (weak pressing force), a medium load zone (blue) indicating an appropriate load (pressing force), a high load zone (green) indicating a large load (strong pressing force), and an overload zone (red) indicating an excessive load (pressing force). It is preferable for the user to adjust the pressing force of the functional unit 12 so that the indicator needle always points to the medium load zone. When the indicator needle of the load display 78 points to the overload zone, the device status notification means drives the vibrator 59 and further lights the LED 56 in an emergency pattern to prompt the user to pay attention.

[0060] When the user taps the load display 78 on the display 52, the load display 78 switches to the second load display 80 shown in FIG. 15. The second load display 80 consists of two major arc-shaped scales arranged concentrically and arrows pointing to a point on each scale. The outer scale indicates the rotational speed of the motor 16, and the inner scale indicates the magnitude of the load torque. These pieces of information are transmitted from the control unit 25 of the electric razor 1 to the smartphone 5. When the rotational speed of the motor 16 falls below a predetermined lower limit value, or when the load torque exceeds a predetermined upper limit value, the device status notification means regards the load on the functional unit 12 as excessive, drives the vibrator 59, and further lights the LED 56 in an emergency pattern to prompt the user to pay attention. When the user taps the second load display 80 on the display 52, the second load display 80 returns to the load display 78 shown in FIG. 14.

[0061] The time display 79 shows the continuous usage time per operation of the electric shaver 1, that is, the continuous driving time of the motor 16, in seconds. When the user turns off the drive switch 21 and the motor 16 stops, the continuous usage time shown by the time display 79 is reset. Even when a predetermined time (5 minutes) has elapsed since the drive switch 21 was turned on and the motor 16 stops due to the above-mentioned timer function, the continuous usage time is similarly reset. When it is, for example, one minute before the motor 16 stops due to the timer function, the device status notification means changes the time display 79 to, for example, red, drives the vibrator 59, and further lights the LED 56 in an emergency pattern to prompt the user. This continuous usage time may be measured on the side of the electric shaver 1 and transmitted to the smartphone 5, or may be measured on the side of the smartphone 5. As described above, since the fact that the drive switch 21 has been turned on or off is transmitted to the smartphone 5, it is also possible to measure the continuous usage time on the side of the smartphone 5.

[0062] (Electrical equipment control means) The electrical equipment control means transmits a control signal for controlling the electric shaver 1 to the control unit 25 via the communication interfaces 24 and 64. At the left end of the display 52, as operable by the user, there are arranged a rotation speed lever 81 for changing the rotation speed of the motor 16 of the electric shaver 1, a drive button 82 for turning the motor 16 on and off, and a lock button 83 for locking the motor 16 in the driving state regardless of the above-mentioned timer function.

[0063] When the user slides the rotation speed lever 81 up and down, the electric device control means transmits a control signal for accelerating or decelerating the motor 16 to the control unit 25 of the electric razor 1 via the communication interfaces 24 and 64. When the motor 16 is in a stopped state and the user taps the drive button 82, the electric device control means transmits a control signal for starting the motor 16 to the control unit 25. Also, when the motor 16 is in a driving state and the user taps the drive button 82, the electric device control means transmits a control signal for stopping the motor 16 to the control unit 25. When the motor 16 is in a driving state and the user taps the lock button 83, the electric device control means transmits a control signal for locking the motor 16 to the control unit 25 if the motor 16 is not locked in the driving state, and transmits a control signal for unlocking it to the control unit 25 if the motor 16 is locked in the driving state. When the motor 16 is locked in the driving state, even if the user accidentally touches the switch button 15, the motor 16 will not stop against the user's will.

[0064] In addition to the above, the electric device control means can control the electric razor 1 according to the displacement operation of the smartphone 5 by the user. For example, when the user tilts the smartphone 5 to one side left or right, the electric device control means transmits a control signal for accelerating the motor 16 to the control unit 25, and when the user tilts the smartphone 5 to the other side left or right, the electric device control means transmits a control signal for decelerating the motor 16 to the control unit 25. The movement operation of the smartphone 5 by the user can be detected by the acceleration sensor 62 and the gyro sensor 63 built in the smartphone 5.

[0065] Also, when the functional unit 12 of the electric razor 1 faces directly under the user's nose, for example, the electric device control means can control the rotation speed of the motor 16 according to the facial part that the functional unit 12 faces, such as reducing the speed of the motor 16. As described above in the item of the zoom control means, by comparing the positional relationship between the face area in the video and each mark 28 of the electric razor 1, the facial part that the functional unit 12 faces can be detected. Further, as described in the timing chart of FIG. 7, when the user is considered to have left the electric razor 1 or the smartphone 5 unattended, the electric device control means can send a control signal to the control unit 25 to decelerate or stop the motor 16 even without an operation of the smartphone 5 by the user.

[0066] (Instruction Manual Display Means) The instruction manual display means causes the display 52 of the smartphone 5 to display the instruction manual of the electric razor 1. When the user taps the instruction manual button 85 (see FIG. 14) on the display 52, the instruction manual display means switches the display 52 from the mirror display to the instruction manual display shown in FIG. 16. A mirror button 86 is arranged at the corner of the display 52 in the instruction manual display. When the user taps the mirror button 86, the instruction manual display means switches the display 52 from the instruction manual display to the mirror display.

[0067] The instruction manual in this embodiment consists of multiple pages such as "Table of Contents", "Names and Functions of Each Part", "How to Use", "Blade Replacement", and "Blade Cleaning". Immediately after the display 52 switches to the manual display, the table of contents is shown. So, the user can display the desired page on the display 52 by tapping the link to each page included in the table of contents or sliding the display 52 left and right. Also, the page can be reduced by a pinch-in operation and enlarged by a pinch-out operation. Note that instead of or in addition to the manual button 85 in this embodiment, a plurality of buttons such as "How to Use", "Blade Replacement", and "Blade Cleaning" can be arranged on the display 52, and when the user taps each of these buttons, the corresponding page of the instruction manual can be configured to be displayed. The data of the instruction manual may be included in the auxiliary app in advance, or may be downloaded from the server of the manufacturer of the electric razor 1 via the Internet when the manual button 85 is tapped.

[0068] In the flowchart of FIG. 17, immediately after the auxiliary app is launched on the smartphone 5, the display 52 is in mirror display. When the manual button 85 on the display 52 is tapped (YES in step S21), the manual display means switches the display 52 from mirror display to manual display (step S22). At the same time, according to the control signal transmitted from the above electrical equipment control means to the electric razor 1, the control unit 25 stops the motor 16 (step S23). After that, it waits until the drive switch 21 of the electric razor 1 is turned on or the mirror button 86 on the display 52 is tapped (steps S24 to S25).

[0069] When the drive switch 21 of the electric razor 1 is turned on (YES in step S24), the process proceeds to step S26, and the control unit 25 starts the motor 16. The fact that the drive switch 21 has been turned on is transmitted from the control unit 25 to the smartphone 5 via the communication interfaces 24 and 64. Upon receiving this, the instruction manual display means switches the display 52 from the instruction manual display to the mirror display. When the mirror button 86 on the display 52 is tapped (YES in step S25), the process also proceeds to step S26, and the instruction manual display means switches the display 52 to the mirror display. At the same time, in accordance with the control signal transmitted from the electrical equipment control means to the electric razor 1, the control unit 25 starts the motor 16.

[0070] The timing chart of FIG. 18 shows an example of the case where the display 52 and the motor 16 are controlled in accordance with the flowchart of FIG. 17. At time t31, the instruction manual button 85 is tapped, and the display 52 switches from the mirror display to the instruction manual display, and in the electric razor 1, the motor 16 is stopped. At the next time t32, the mirror button 86 is tapped, the display 52 switches to the mirror display, and the motor 16 is started. At the next time t33, similar to time t31, the instruction manual button 85 is tapped, the display 52 switches to the instruction manual display, and the motor 16 is stopped. At the next time t34, the drive switch 21 of the electric razor 1 is turned on, the display 52 switches to the mirror display, and the motor 16 is started.

[0071] (Example 2) Fig. 19 shows Example 2 of the interlocking system. The razor head 11 of the electric razor 1 according to Example 2 includes a pair of front and rear functional parts 12, and a skin elasticity sensor (skin elasticity measuring means) 40 is provided between both functional parts 12. The functional part 12 consists of an outer blade (cutting blade) 13 and an inner blade (cutting blade) 14. As the skin elasticity sensor 40, various conventionally known sensors can be used. For example, a vibrator sensor disclosed in Japanese Patent Application Laid-Open No. 2009-153727 or a pressure sensor disclosed in Japanese Patent Application Laid-Open No. 61-181437 can be mentioned. The skin elasticity sensor 40 according to this example is composed of a contact 41 that contacts the skin surface simultaneously with the outer blade 13, a spring 42 that biases the contact 41 toward the skin surface, and the like. The skin elasticity sensor (skin elasticity measuring means) 40 may be provided at the left and right parts of the functional part 12 in the case body constituting the razor head 11 as long as it can contact the skin surface simultaneously with the functional part 12.

[0072] On the side of the main body case 10, a skin elasticity notification part 43 for displaying the magnitude of skin elasticity in three levels of "small", "medium", and "large" is provided. The skin elasticity notification part 43 is composed of three LEDs mounted on the control board 17, and these LEDs respectively correspond to "small", "medium", and "large". The main body case 10 is provided with a light-transmitting window facing each LED, and the user can visually recognize the light-emitting state of each LED through the light-transmitting window. The control part 25 of the electric razor 1 performs control to turn on any one of the LEDs of the skin elasticity notification part 43 according to the magnitude of the skin elasticity measured by the skin elasticity sensor 40.

[0073] The muscle elasticity notification unit 43 can also be provided on the razor head 11. In this case, the muscle elasticity notification unit 43 is composed of, for example, a single LED that emits three colors of light, and the LED can be discolored to "blue", "green", and "red" corresponding to "small", "medium", and "large" of the muscle elasticity, respectively, to notify the user of the muscle elasticity. If the muscle elasticity notification unit 43 is provided on the razor head 11 in this way, it is easy for the user to visually recognize the light emission state and confirm the muscle elasticity state. The muscle elasticity notification unit 43 that emits light and is disposed on the main body case 10 side may be hidden by the hand of the user holding the main body case 10, but this possibility is small when it is disposed on the razor head 11. When using the electric razor 1, mainly the back surface thereof is reflected in the mirror, so it is preferable to provide the muscle elasticity notification unit 43 on the back surface (rear surface) of the razor head 11. Alternatively, the muscle elasticity notification unit 43 is provided inside the razor head 11, and it is preferable to configure it to irradiate light through a transparent portion (including a translucent portion) of the case body constituting the razor head 11 or the outer blade 13. According to these configurations, since the user can easily visually recognize the light irradiated by the muscle elasticity notification unit 43 through the mirror, the muscle elasticity state can be easily confirmed. Furthermore, in addition to the light emitting means that appeals to the user's vision, the muscle elasticity notification unit 43 can also be composed of a sounding means such as a buzzer that appeals to the sense of hearing and a vibrating means such as a vibrator that appeals to the sense of touch. Among these, the muscle elasticity notification unit 43 may be composed of two or more means.

[0074] The auxiliary application stored in the smartphone 5 includes a muscle elasticity display means for displaying the magnitude of the muscle elasticity measured by the muscle elasticity sensor 40 on the display 52. The muscle elasticity display 88 by the muscle elasticity display means consists of three bars arranged in a straight line, and each bar corresponds to "small", "medium", and "large" in order from the left. When information regarding the magnitude of the muscle elasticity is transmitted from the control unit 25 of the electric razor 1 to the smartphone 5 via the communication interfaces 24 and 64, the muscle elasticity display means controls only the bar corresponding to the magnitude among the three bars of the muscle elasticity display 88 to blink. At this time, either the remaining two bars may be constantly lit or constantly extinguished. In addition to this, the muscle elasticity display 88 may be composed of, for example, three bars that are constantly lit and an arrow indicating any one of these bars.

[0075] Generally, skin elasticity varies from part to part of the face. In the part with low skin elasticity, when the functional part 12 of the electric shaver 1 is pressed, the facial muscles are likely to enter the hole of the outer blade 13, and the part that has entered is strongly rubbed against the inner blade 14 and may be severely damaged. Therefore, it is preferable to press the functional part 12 with a relatively weak force. On the other hand, in the part with high skin elasticity, even if the functional part 12 is pressed relatively strongly, it is difficult for the facial muscles to enter the hole of the outer blade 13. As in this embodiment, when the skin elasticity measured by the skin elasticity sensor 40 is displayed on the display 52, the user can be informed of the skin elasticity of the part facing the functional part 12 in real time, and the optimization of the pressing force of the functional part 12 on the part can be promoted.

[0076] Furthermore, the control unit 25 of the electric shaver 1 automatically controls the rotation speed of the motor 16 according to the skin elasticity measured by the skin elasticity sensor 40. Specifically, the lower the measured value of the skin elasticity sensor 40, the lower the rotation speed of the motor 16 is controlled. In this embodiment, the rotation speed when the skin elasticity is "high" is set to 6500 rpm, which is the normal rotation speed, the rotation speed when the skin elasticity is "medium" is set to 6300 rpm, which is the slightly reduced rotation speed, and the rotation speed when the skin elasticity is "low" is set to 6000 rpm, which is the decelerated rotation speed.

[0077] When the rotation speed of the motor 16 is automatically controlled according to the measured value of the skin elasticity sensor 40, in addition to the above-mentioned skin elasticity notification unit 43 and skin elasticity display 88, the user can also know the magnitude of their own skin elasticity based on the change in the pitch of the driving sound of the motor 16. Also in this embodiment, considering that the facial muscles are more likely to enter the hole of the outer blade 13 when the functional part 12 is pressed in the part with lower skin elasticity, the rotation speed of the motor 16 is reduced, so that the damage received by the facial muscles that have entered the hole of the outer blade 13 from the outer blade 13 and the inner blade 14 can be reduced. Moreover, since the rotation speed of the motor 16 is automatically controlled, the user is not forced to take the trouble of changing the rotation speed. Since the interlocking system of the other embodiment 1 is the same, the same members are denoted by the same reference numerals and the description thereof is omitted.

[0078] The interlocking system according to this embodiment can be implemented in the following form.

[0079] A linkage system that links a small electrical device 1 having a functional part 12 for the human body and a portable display device 5 having a display part 52, The small electrical device 1 and the display device 5 are each provided with communication interfaces 24 and 64 for establishing connection with each other, The display device 5 is provided with an auxiliary function for assisting the use of the small electrical device 1 using the display part 52, An operation switch 21 for activating the auxiliary function via the communication interfaces 24 and 64 is provided on the small electrical device 1, The small electrical device 1 is an electric shaver provided with skin elasticity measuring means 40 for measuring the user's skin elasticity, The auxiliary function of the display device 5 is characterized in that it includes skin state display means for displaying the skin elasticity measured by the skin elasticity measuring means 40 on the display part 52. A linkage system.

[0080] The small electrical device 1 which is an electric shaver is provided with skin elasticity measuring means 40 for measuring the user's skin elasticity, and the skin elasticity measured by the skin elasticity measuring means 40 is displayed on the display part 52 of the display device 5. According to this, the user can be informed of his own skin elasticity and urged to press the functional part 12 of the small electrical device 1 with a force corresponding to the skin elasticity. In particular, it is possible to work on the user so as not to strongly press the functional part 12 on the part with low skin elasticity, and suppress the damage received by the part from the functional part 12.

[0081] In addition, the electric shaver 1 according to the present embodiment can be implemented in the following form.

[0082] An electric shaver characterized by comprising skin elasticity measuring means 40 for measuring skin elasticity.

[0083] According to an electric razor equipped with skin elasticity measuring means 40 for measuring skin elasticity, it is possible to inform the user of their own skin elasticity and prompt the user to press the cutting blades 13 and 14 with a force corresponding to the skin elasticity. In particular, it is possible to work on the user so as not to strongly press the cutting blades 13 and 14 on the part with low skin elasticity, and suppress the damage received by the part from the cutting blades 13 and 14.

[0084] It includes an outer blade 13, an inner blade 14 that slidably contacts the outer blade 13, a motor 16 that drives the inner blade 14, and skin elasticity measuring means 40 for measuring skin elasticity. An electric razor characterized in that the rotation speed of the motor 16 is controlled based on the measurement result of the skin elasticity measuring means 40.

[0085] According to an electric razor in which the rotation speed of the motor 16 is controlled based on the measurement result of the skin elasticity measuring means 40, the user can know the magnitude of their own skin elasticity based on the change in the pitch of the driving sound of the motor 16. In this way, when informing the user of their own skin elasticity, it is possible to prompt the user to press the outer blade 13 with a force corresponding to the skin elasticity. In particular, it is possible to work on the user so as not to strongly press the outer blade 13 on the part with low skin elasticity, and suppress the damage received by the part from the inner blade 14.

[0086] It includes an outer blade 13, an inner blade 14 that slidably contacts the outer blade 13, a motor 16 that drives the inner blade 14, and skin elasticity measuring means 40 for measuring skin elasticity. The rotation speed of the motor 16 is controlled based on the measurement result of the skin elasticity measuring means 40. An electric razor characterized in that when the measured value of the skin elasticity measuring means 40 increases, it is automatically controlled to increase the rotation speed of the motor 16, and when the measured value of the skin elasticity measuring means 40 decreases, it is automatically controlled to decrease the rotation speed of the motor 16.

[0087] According to the electric shaver in which the rotational speed of the motor 16 is controlled based on the measurement result of the muscle elasticity measuring means 40, the user can know the magnitude of his own muscle elasticity based on the change in the pitch of the driving sound of the motor 16. In this way, when notifying the user of his own muscle elasticity, the user can be prompted to press the outer blade 13 with a force corresponding to the muscle elasticity. In particular, in the part where the muscle elasticity is small, when the outer blade 13 is pressed, the facial muscle is likely to enter the hole of the outer blade 13, and the part that has entered may be sandwiched between the outer blade 13 and the inner blade 14 and may be severely damaged. As described above, when notifying the user of his own muscle elasticity, the user can be urged not to strongly press the outer blade 13 against the part where the muscle elasticity is small, and the damage received by the part from the outer blade 13 and the inner blade 14 can be suppressed. Further, since the rotational speed of the motor 16 is automatically decreased in the part where the muscle elasticity is small, the damage received by the facial muscle that has entered the hole of the outer blade 13 from the inner blade 14 can be reduced.

[0088] An electric shaver comprising a main body case 10 that also serves as a grip and a shaver head 11 supported on the upper part of the main body case 10, The shaver head 11 includes an outer blade 13, an inner blade 14 that slidably contacts the outer blade 13, and a muscle elasticity measuring means 40 for measuring muscle elasticity. An electric shaver, characterized in that the muscle elasticity measuring means 40 is provided at a position adjacent to the outer blade 13.

[0089] According to the electric shaver provided with the muscle elasticity measuring means 40 for measuring muscle elasticity, the user can be notified of his own muscle elasticity and prompted to press the outer blade 13 with a force corresponding to the muscle elasticity. In particular, the user can be urged not to strongly press the outer blade 13 against the part where the muscle elasticity is small, and the damage received by the part from the inner blade 14 can be suppressed. Further, when the muscle elasticity measuring means 40 is provided at a position adjacent to the outer blade 13, when the user applies the outer blade 13 to the muscle surface, the muscle elasticity measuring means 40 inadvertently contacts the muscle surface, improving the usability for the user.

[0090] (Example 3) Example 3 is applied to a system for linking a facial beauty tool with a smartphone. As shown in FIG. 20, the configuration of the smartphone (display device) 5 is the same as that of Example 1. The beauty tool (small electric device) 2 includes a vertically long main body case 30 and a skin electrode (functional part) 32 protruding from the upper front of the main body case 30. The majority of the lower side of the main body case 30 constitutes a grip, and a pair of left and right grip electrodes 33 and a switch button 35 that can be pressed inward are provided on the surface of the grip. Inside the main body case 30, a vertically long control board 37 and a secondary battery (battery) 38 that is the entire power source of the beauty tool 2 are housed. As in Example 1, the control board 37 is equipped with a drive switch (operation switch) 21, an acceleration sensor 22, a gyro sensor 23, a communication interface 24, a control unit 25, and the like.

[0091] In the ion derivation mode of the beauty tool 2, a pulse current of positive polarity is supplied to the skin electrode 32, and a pulse current of negative polarity is supplied to the grip electrode 33. When a cotton mat impregnated with lotion is attached to the outer surface of the skin electrode 32 of the beauty tool 2 set to the ion derivation mode, and this cotton mat is slowly slid along the facial skin, fine dirt that has entered into wrinkles, folds, pores, etc. of the facial skin can be removed. On the other hand, in the ion introduction mode, a pulse current of negative polarity is supplied to the skin electrode 32, and a pulse current of positive polarity is supplied to the grip electrode 33. When a cotton mat impregnated with lotion is attached to the outer surface of the skin electrode 32 of the beauty tool 2 set to the ion introduction mode, and this cotton mat is slowly slid along the facial skin, the lotion can be penetrated into the skin surface, enhancing the moisturizing effect.

[0092] The memory 61 of the smartphone 5 according to this embodiment also stores an auxiliary app, which is an application program that assists the user in using the beauty device 2. Comparing the auxiliary apps of Embodiment 1 and Embodiment 3, the content of the illustration addition means is particularly different. The illustration addition means here adds an auxiliary illustration 70 so that the appearance of the user's face area shown on the display 52 becomes more beautiful as the beauty treatment by the user progresses. For example, immediately after the app is launched before the beauty treatment starts, an untreated illustration 71 representing dark spots or freckles is added to the face area, and the untreated illustration 71 is gradually thinned as the beauty treatment progresses. Alternatively, immediately after the app is launched, an auxiliary illustration 70 representing simple accessories is added to the face area, and as the beauty treatment progresses, it is changed to an auxiliary illustration 70 representing more luxurious accessories.

[0093] The auxiliary app of this embodiment includes the same mirroring means, video still means, lighting control means, zoom control means, and instruction manual display means as in Embodiment 1, but the inversion instruction means is omitted. The device status notification means displays a battery level display 75 and a time display 79 on the display 52 as the device status of the beauty device 2. The electrical device control means causes the display 52 to display a drive button 82 for turning on and off the supply of pulsed current to the skin electrode 32 and the grip electrode 33, a lock button 83 for locking the pulsed current in the supplied state regardless of the timer function of the beauty device 2, and a current stimulation lever (corresponding to the rotation speed lever 81 of Embodiment 1) for changing the intensity of the pulsed current. Since the rest is the same as in Embodiment 1, the same members are denoted by the same reference numerals and their descriptions are omitted.

[0094] As described above, in the interlocking system according to each embodiment, the electric razor 1 or the beauty appliance 2 and the smartphone 5 are connected via the communication interfaces 24 and 64. When the user operates the drive switch 21 of the electric razor 1 or the beauty appliance 2, the auxiliary app of the smartphone 5 is activated in the background. When the auxiliary app is activated, a push notification is displayed on the display 52. Therefore, the user can switch the display 52 to the screen of the auxiliary app with a simple operation of just tapping this notification. According to the interlocking system according to each of the above embodiments, the operation of the smartphone 5 when the user starts using the electric razor 1 or the beauty appliance 2 and the smartphone 5 in combination can be simplified, and the convenience for the user can be improved.

[0095] The display device 5 may be a device equipped with a dedicated operating system specialized for interlocking with the small electric devices 1 and 2, in addition to a smartphone equipped with a general-purpose mobile operating system. In this case, when the user operates the operation switch 21 of the small electric devices 1 and 2, not only the auxiliary function of the display device 5 is activated, but also the operating system is designed so that the display 52 immediately switches to the screen of the auxiliary function, further improving the convenience for the user. The display 52 of the display device 5 can include a material whose reflectivity increases when an electric current is passed through it. In this case, the display 52 can be mirrored simply by passing an electric current through it without using the camera 53.

[0096] The mirroring means is not essential. For example, the auxiliary function of the display device 5 may be configured only by the device state notification means or the electric device control means. The operation switch 21 for activating the auxiliary function of the display device 5 is not limited to the drive switch for driving the small electric devices 1 and 2, and may be a dedicated switch provided on the small electric devices 1 and 2 separately from the drive switch. The communication interfaces 24 and 64 of the small electric devices 1 and 2 and the display device 5 may be wired interfaces.

[0097] The interlocking system according to each of the above embodiments can be implemented in the following forms.

[0098] An interlocking system that interlocks a small electrical device 1, 2 having functional parts 12, 32 for the human body and a portable display device 5 having a display part 52, The small electrical devices 1, 2 and the display device 5 are each provided with communication interfaces 24, 64 for establishing their connection with each other, The display device 5 is provided with an auxiliary function for assisting the use of the small electrical devices 1, 2 using the display part 52, An interlocking system, characterized in that an operation switch 21 for activating the auxiliary function is provided on the small electrical device 1, 2 via the communication interfaces 24, 64.

[0099] In the above interlocking system, the small electrical devices 1, 2 and the display device 5 are connected via the communication interfaces 24, 64, and when the user operates the operation switch 21 of the small electrical device 1, 2, an auxiliary function for assisting the use of the small electrical device 1, 2 is activated in the display device 5. In this way, if the auxiliary function of the display device 5 can be activated from the side of the small electrical device 1, 2, the operation of the display device 5 when the user starts using the small electrical device 1, 2 and the display device 5 together can be simplified, and the convenience of the user can be improved. That is, in the display device 5 equipped with a dedicated operating system specialized for interlocking with the small electrical device 1, without operating the display device 5, by simply performing an activation operation of the auxiliary function from the side of the small electrical devices 1, 2, the display by the auxiliary function can be displayed on the display part 52. Also, in the display device 5 such as a portable communication terminal in which an auxiliary application that exhibits the auxiliary function is stored as one of the application programs, when the operation switch 21 of the small electrical devices 1, 2 is operated, the auxiliary application is activated in the background, so on the side of the display device 5, it is only necessary to perform a simple operation of switching the display part 52 to the screen of the auxiliary application.

[0100] An interlocking system, wherein the operation switch for activating the auxiliary function of the display device 5 is a drive switch 21 for driving the functional parts 12, 32 of the small electrical devices 1, 2.

[0101] When the operation switch for activating the auxiliary function of the display device 5 is the drive switch 21 for driving the functional units 12 and 32 of the small electrical appliances 1 and 2, the user can drive the functional units 12 and 32 and activate the auxiliary function simultaneously with a single touch (one operation after touching the drive switch 21), thus improving the user's convenience.

[0102] An interlocking system in which the communication interfaces 24 and 64 of the small electrical appliances 1 and 2 and the display device 5 are wireless interfaces compatible with short-range wireless communication.

[0103] When the communication interfaces 24 and 64 of the small electrical appliances 1 and 2 and the display device 5 are wireless interfaces compatible with short-range wireless communication, the communication cable, which is indispensable when it is a wired interface, can be omitted, thus eliminating inconveniences such as the communication cable getting caught on objects and the hassle of carrying the communication cable.

[0104] The auxiliary function of the display device 5 includes a mirroring means that makes the display unit 52 available as a mirror in an interlocking system.

[0105] When the auxiliary function of the display device 5 includes a mirroring means that makes the display unit 52 available as a mirror, the display device 5 can be used as a substitute for a hand mirror when using the small electrical appliances 1 and 2, thus eliminating the hassle of always carrying a hand mirror with the small electrical appliances 1 and 2 when going out.

[0106] The display unit 52 and the camera 53 are arranged on the front 51 of the display device 5. An interlocking system in which the mirroring means is configured to project the video captured by the camera 53 onto the display unit 52 in real time.

[0107] Cameras are pre-equipped in many display devices 5 such as smartphones. Therefore, when the mirroring means is configured to project the video captured by the camera 53 onto the display unit 52 in real time, the overall cost of the interlocking system can be reduced by using the existing hardware of the display device 5.

[0108] An interlocking system in which the display device 5 has a zoom function of the camera 53.

[0109] When the display device 5 has a zoom function of the camera 53, even if the user does not move their face closer to or away from the camera 53, the user can change the zoom magnification of the camera 53 by controlling the zoom function, and thus can change the range of the face reflected on the display unit 52, improving the convenience for the user.

[0110] An interlocking system in which the zoom function of the camera 53 is controlled in conjunction with the operation of the small electrical appliances 1 and 2 by the user.

[0111] When using the small electrical appliances 1 and 2 and the display device 5 that substitutes for a hand mirror at the same time, many users hold the small electrical appliances 1 and 2 with their dominant hand, so it is easier to operate the small electrical appliances 1 and 2 than the display device 5. Therefore, if the zoom function of the camera 53 is controlled in conjunction with the operation of the small electrical appliances 1 and 2 by the user, the user can smoothly change the zoom magnification of the camera 53.

[0112] An interlocking system in which the zoom function of the camera 53 is controlled in conjunction with the movement operation of the small electrical appliances 1 and 2 by the user.

[0113] When using small electrical appliances 1 and 2 such as an electric shaver or beauty appliance in the normal way, it involves movement operations such as moving the small electrical appliances 1 and 2 along the facial muscles. Therefore, if the zoom function of the camera 53 is controlled in conjunction with the movement operation of the small electrical appliances 1 and 2, the zoom magnification can be automatically changed without the user performing a specific operation for zoom control, thus saving the user the trouble of zoom operation.

[0114] An interlocking system in which the zoom function of the camera 53 is controlled according to the part of the user's face facing the functional parts 12 and 32 of the small electrical appliances 1 and 2.

[0115] The treatment of facial muscles by small electrical appliances 1 and 2 such as electric shavers and beauty appliances is not uniformly performed on the entire face, but there are areas that are treated relatively roughly and, conversely, areas that are treated carefully. Therefore, if the zoom function of the camera 53 is controlled according to the part of the user's face facing the functional parts 12 and 32 of the small electrical appliances 1 and 2, that is, the part of the face that the user intends to treat with the functional parts 12 and 32, it becomes possible to automatically change the zoom magnification of the camera 53 to a value suitable for that part, further improving the convenience for the user.

[0116] An interlocking system in which the zoom function of the camera 53 is controlled in conjunction with the movement operation of the display device 5 by the user.

[0117] When the zoom function of the camera 53 is controlled in conjunction with the movement operation of the display device 5, the user can change the zoom magnification of the camera 53 with a simple operation of just moving the display device 5. When using the small electrical appliances 1 and 2 and the display device 5 that substitutes for a hand mirror simultaneously, the display device 5 is often held with the hand opposite to the dominant hand. However, as long as it is just a movement operation of the display device 5, the zoom operation can be easily performed even with the hand opposite to the dominant hand.

[0118] The display device 5 is equipped with a face recognition function that detects a face area from the video captured by the camera 53. An interlocking system in which the zoom function of the camera 53 is controlled according to the expression of the face area recognized by the face recognition function.

[0119] If the zoom function of the camera 53 is controlled according to the expression of the face area recognized by the face recognition function, the user can change the zoom magnification of the camera 53 just by changing the expression reflected in the camera 53. Therefore, the operation of the small electrical appliances 1 and 2 or the display device 5 for changing the zoom magnification can be omitted, improving the convenience for the user.

[0120] The auxiliary function of the display device 5 includes an illustration adding means for adding an auxiliary illustration 70 to the face area reflected on the display unit 52. The auxiliary illustration includes at least one of an unprocessed illustration 71 indicating that the processing by the functional units 12 and 32 has not been completed and a processed illustration 72 indicating that the processing by the functional units 12 and 32 has been completed. An interlocking system in which an illustration adding means changes the auxiliary illustration 70 projected on the display unit 52 according to the progress of the processing by the functional units 12 and 32.

[0121] When an auxiliary illustration 70 such as an unprocessed illustration 71 or a processed illustration 72 is added to the face area projected on the display unit 52, a game-like element can be added to the monotonous processing by the functional units 12 and 32, and the user can perform the processing by the functional units 12 and 32 while enjoying it. Also, until all the unprocessed illustrations 71 disappear from the face area of the display unit 52, or until the processed illustration 72 is added to the entire area to be processed, the user is prompted to continue the processing by the functional units 12 and 32, and partial processing deficiencies can be prevented.

[0122] The small electric device 1 is a hair remover. The auxiliary illustration 70 includes an unprocessed illustration 71 representing exaggerated body hair. An interlocking system in which the illustration adding means adds the unprocessed illustration 71 to the face area projected on the display unit 52 before the hair removal processing by the functional unit 12 starts, and sequentially erases the unprocessed illustration 71 from the portions of the face area that the functional unit 12 has passed a predetermined number of times.

[0123] Assuming that the auxiliary illustration 70 includes an unprocessed illustration 71 representing exaggerated body hair, the unprocessed illustration 71 is added to the face area projected on the display unit 52 before the hair removal processing by the functional unit 12 starts, and the unprocessed illustration 71 is sequentially erased from the portions of the face area that the functional unit 12 has passed a predetermined number of times. According to this, the user can perform the hair removal processing while enjoying it, and moreover, the user is prompted to continue the hair removal processing until all the unprocessed illustrations 71 disappear from the face area, preventing partial processing deficiencies. The user can confirm that the hair removal processing of the entire face has been completed when all the unprocessed illustrations 71 have disappeared from the display unit 52.

[0124] The small electrical appliance 2 is a beauty appliance for facial muscles, The auxiliary illustration 70 changes the apparent beauty of the facial area reflected on the display unit 52, The illustration addition means is an interlocking system that changes the auxiliary illustration 70 added to the facial area so that the appearance of the facial area becomes more beautiful as the beauty treatment by the functional unit 32 progresses.

[0125] Assuming that the auxiliary illustration 70 changes the apparent beauty of the facial area, as the beauty treatment by the functional unit 32 progresses, the auxiliary illustration 70 added to the facial area is changed so that the appearance of the facial area becomes more beautiful. According to this, the user can perform the beauty treatment while enjoying it, and moreover, it is possible to prompt the user to continue the beauty treatment until the appearance of the facial area becomes beautiful, and prevent the occurrence of partial treatment deficiencies.

[0126] The auxiliary function of the display device 5 is an interlocking system including a video stilling means for stilling the video reflected on the display unit 52.

[0127] According to the video stilling means for stilling the video reflected on the display unit 52, the user can still the video in a state where the facial part to be checked is reflected on the camera 53, and move the stationary display unit 52 to an easily visible position such as the front of the face, thereby easily checking the said part. In particular, even for parts such as under the chin that are difficult to check with a normal hand mirror, the check can be easily performed.

[0128] An interlocking system in which the video stilling means stills the video reflected on the display unit 52 in conjunction with the stop operation of the functional units 12 and 32 of the small electrical appliances 1 and 2.

[0129] When checking by freezing the video shown on the display unit 52, it is normal to interrupt the processing by the functional units 12 and 32. Continuing to drive the functional units 12 and 32 even during the check is wasteful, such as increasing power consumption. If the video is frozen in conjunction with the stop operation of the functional units 12 and 32, it is possible to prevent the above waste from occurring by stopping the functional units 12 and 32 while the video is frozen. Also, it is not necessary to perform the operation of freezing the video and the operation of stopping the functional units 12 and 32 separately, and the user's labor can be reduced. Furthermore, if the functional units 12 and 32 are stopped while the video is frozen, the user can check the still image in a calm state without being concerned about the driving sound of the functional units 12 and 32.

[0130] An interlocking system in which the display unit 52 of the display device 5 turns off when a predetermined time has elapsed after the video stilling means freezes the video.

[0131] If the display unit 52 of the display device 5 is set to turn off when a predetermined time has elapsed after the video is frozen, when the user finishes using and stops the small electrical appliances 1 and 2 and the display unit 52 does not turn off, it is possible to prevent the waste of continuously lighting the display unit 52 and reduce the power consumption of the display device 5.

[0132] The small electrical appliance 1 is an electric razor, A camera 53 is arranged at the upper part of the front 51 of the display device 5 in the normal posture, The auxiliary function of the display device 5 is an interlocking system including an inversion instruction means for instructing the user to invert the display device 5 upside down.

[0133] It is easier to photograph the lower part of the face where hair grows, especially the area under the chin, in the inverted posture where the camera 53 is located at the lower part of the display device 5 rather than in the normal posture where the camera 53 is located at the upper part of the display device 5. Therefore, when using the display unit 52 as a hand mirror during shaving, it is preferable to set the display device 5 to the inverted posture. According to the inversion instruction means for instructing the user to invert the display device 5 upside down, it is possible to prompt the user to set the display device 5 to the inverted posture during shaving and enable comfortable shaving of the area under the chin and the like.

[0134] An interlocking system in which the inversion instruction means causes the display unit 52 to display inverted characters that are upside down.

[0135] When the inversion instruction means causes the display unit 52 to display inverted characters that are upside down, the user can intuitively understand that the display device 5 needs to be inverted vertically, and can more surely adopt an inverted posture.

[0136] An interlocking system in which the inversion instruction means causes the display unit 52 to display a character or symbol that instructs a vertical inversion.

[0137] When the inversion instruction means causes the display unit 52 to display a character or symbol that instructs a vertical inversion, it can clearly convey to the user that the display device 5 needs to be inverted vertically, and can more surely adopt an inverted posture.

[0138] An interlocking system in which the inversion instruction means inverts the video reflected on the display unit 52.

[0139] When the inversion instruction means inverts the video reflected on the display unit 52, since the display unit 52 cannot be used as a hand mirror in the normal posture, it becomes more certain that the user will adopt an inverted posture.

[0140] The auxiliary function of the display device 5 is an interlocking system including a device state notification means for displaying the device states of the small electrical devices 1 and 2 on the display unit 52.

[0141] When the device states of the small electrical devices 1 and 2 are displayed on the display unit 52 of the display device 5, the user can easily confirm the device states of the small electrical devices 1 and 2 by looking at the display unit 52 even during the use of the small electrical devices 1 and 2 which are difficult to visually observe.

[0142] The device state displayed on the display unit 52 is an interlocking system including the remaining battery levels of the small electrical devices 1 and 2.

[0143] When the remaining battery levels of the small electrical appliances 1 and 2 are displayed on the display unit 52, the user can easily and frequently check the remaining battery levels while using the small electrical appliances 1 and 2. In particular, when the battery levels are low when the user is away from home where it is difficult to charge or replace the batteries 18 and 38, the user can be immediately notified of this, and the user can be prompted to complete the use of the small electrical appliances 1 and 2 before the batteries run out.

[0144] The small electrical appliance 1 is an electric hair clipper, The device state displayed on the display unit 52 is an interlocking system including the replacement timing of the cutting blades 13 and 14 constituting the functional unit 12.

[0145] When the replacement timing of the cutting blades 13 and 14 is displayed on the display unit 52, the user can be surely notified that the replacement timing is approaching, and the early replacement of the cutting blades 13 and 14 can be promoted. Therefore, it is possible to suppress the occurrence of a situation where the user continues to use the cutting blades 13 and 14 with a deteriorated cutting performance.

[0146] The small electrical appliance 1 is an electric hair clipper, The device state displayed on the display unit 52 is an interlocking system including the cleaning timing of the functional unit 12.

[0147] When the cleaning timing of the functional unit 12 is displayed on the display unit 52, the user can be surely notified that the cleaning timing is approaching, and the early cleaning of the functional unit 12 can be promoted. Thereby, the functional unit 12 can be maintained in a hygienic state, and the generation of strange odors associated with the oxidation and fermentation of organic substances can be suppressed. In addition, since the hair debris and the like excessively accumulated in the functional unit 12 cause an increase in the load on the motor 16, if the functional unit 12 is cleaned early to remove the hair debris and the like, the life of the motor 16 can be improved.

[0148] The small electrical appliance 1 is an electric hair clipper, The device state displayed on the display unit 52 is an interlocking system including the magnitude of the load acting on the functional unit 12.

[0149] There is a correlation between the strength of the force with which the user presses the functional part 12 against the skin surface and the magnitude of the load acting on the functional part 12. The greater the pressing force, the greater the load. Therefore, if the magnitude of the load on the functional part 12 is displayed on the display unit 52, the user can be informed of the strength of the pressing force at that time. By performing beard shaving while checking the magnitude of the load, the user can always maintain the pressing force of the functional part 12 at an appropriate strength and reduce the burden on the skin surface.

[0150] The device state displayed on the display unit 52 is an interlocking system including the continuous usage time of the small electrical devices 1 and 2.

[0151] Continuously using the small electrical devices 1 and 2 for a long time may cause inconveniences such as increased heat generation. Therefore, if the continuous usage time of the small electrical devices 1 and 2 is displayed on the display unit 52, the user can be prompted to avoid long-term continuous use.

[0152] The display device 5 is provided with a vibrator 59, The device state notification means is an interlocking system that drives the vibrator 59 when the device state of the small electrical devices 1 and 2 satisfies a predetermined condition.

[0153] When the vibrator 59 is driven when the device state of the small electrical devices 1 and 2 satisfies a predetermined condition, not only can it appeal to the user's vision on the display unit 52, but it can also appeal to the user's touch or hearing with the vibrator 59. Therefore, the user can be more surely informed that the predetermined condition has been satisfied.

[0154] The display device 5 is provided with a lighting device 56, An interlocking system in which the lighting device 56 lights up when the auxiliary function is activated.

[0155] When the lighting device 56 provided in the display device 5 is lit when the auxiliary function is activated, it is possible to clearly inform the user that the auxiliary function has been activated. In addition, when the camera 53 and the lighting device 56 are arranged on the same side of the display device 5, when using the small electrical devices 1 and 2 and the display device 5 in a dim place, the shooting target of the camera 53 can be illuminated by the lighting device 56. Therefore, regardless of the brightness of the place where the small electrical devices 1 and 2 and the display device 5 are used, a clear video can be projected on the display unit 52, improving the convenience for the user.

[0156] The auxiliary function of the display device 5 is an interlocking system including electrical device control means for controlling the functional parts 12 and 32 of the small electrical devices 1 and 2 via the communication interfaces 24 and 64.

[0157] If the functional parts 12 and 32 of the small electrical devices 1 and 2 can be controlled from the side of the display device 5 via the communication interfaces 24 and 64, the user can control the functional parts 12 and 32 from both the small electrical devices 1 and 2 and the display device 5, thus improving the convenience for the user.

[0158] The electrical device control means is an interlocking system including a lock function for maintaining the functional parts 12 and 32 of the small electrical devices 1 and 2 in a driving state.

[0159] According to the lock function for maintaining the functional parts 12 and 32 of the small electrical devices 1 and 2 in a driving state, it is possible to eliminate the situation where the functional parts 12 and 32 stop due to the user's accidental operation of the small electrical devices 1 and 2 or the operation of the timer against the user's will. Therefore, the user can use the small electrical devices 1 and 2 more comfortably.

[0160] The electrical device control means is an interlocking system for controlling the output of the functional parts 12 and 32 of the small electrical devices 1 and 2 in conjunction with the displacement operation of the display device 5.

[0161] When the displacement operation of the display device 5 is linked to control the outputs of the functional units 12 and 32 of the small electrical appliances 1 and 2, the user can control the outputs of the functional units 12 and 32 more quickly than when operating the display device 5 by buttons, etc., improving the convenience for the user.

[0162] The small electrical appliance 1 is an electric shaver having a motor 16 as a drive source, A linkage system in which the rotational speed of the motor 16 is controlled by the electrical appliance control means.

[0163] When the displacement operation of the display device 5 is linked to control the rotational speed of the motor 16, which is the drive source of the electric shaver 1, the user can quickly change the rotational speed of the motor 16 according to their intention depending on the part where the functional unit 12 faces, such as setting the motor 16 to a low speed when shaving the beard under the nose, etc., further improving the convenience for the user.

[0164] The auxiliary function of the display device 5 is a linkage system including an instruction manual display means for displaying the instruction manuals of the small electrical appliances 1 and 2 on the display unit 52.

[0165] According to the instruction manual display means for displaying the instruction manuals of the small electrical appliances 1 and 2 on the display unit 52, when the user wants to check how to use the small electrical appliances 1 and 2, etc., the instruction manual can be immediately displayed on the display unit 52 for the user to read. This saves the trouble of taking out the instruction manual booklet and can improve the convenience for the user.

Explanation of Reference Numerals

[0166] 1 Small electrical appliance (electric shaver) 2 Small electrical appliance (beauty appliance) 5 Display device (smartphone) 12 Functional unit 13 Cutting blade (outer blade) 14 Cutting blade (inner blade) 16 Motor 21 Operation switch (drive switch) 32 Functional unit (muscle electrode) 52 Display unit 53 Camera 56 Lighting device (LED) 59 Vibrator 70 Auxiliary illustration 71 Untreated illustration 72 Processed illustration

Claims

1. A linking system for linking a small electric device (1, 2) having a functional part (12, 32) for a human body with a display device (5) having a display part (52), The small electrical device (1, 2) and the display device (5) each have a communication interface (24, 64) for establishing a connection with each other; The display device (5) has an auxiliary function of assisting the use of the small electrical appliances (1, 2) by using the display unit (52), The auxiliary functions of the display device (5) include a mirroring means that enables the display unit (52) to be used as a mirror; The mirroring means is configured to display a moving image captured by the camera (53) on the display unit (52) in real time; The display device (5) has a zoom function for the camera (53), A linked system in which the zoom function is controlled by the size of the face area in the video.

2. 2. The interlocking system according to claim 1, wherein the zoom function of the camera (53) zooms in when the face area becomes relatively large.

3. 2. The interlocking system according to claim 1, wherein the zoom function of the camera (53) zooms out when the face area becomes relatively small.

4. A linking system for linking a small electric device (1, 2) having a functional part (12, 32) for a human body with a display device (5) having a display part (52), The small electrical device (1, 2) and the display device (5) each have a communication interface (24, 64) for establishing a connection with each other; The display device (5) has an auxiliary function of assisting the use of the small electrical appliances (1, 2) by using the display unit (52), The auxiliary functions of the display device (5) include a mirroring means that enables the display unit (52) to be used as a mirror; The mirroring means is configured to display a moving image captured by the camera (53) on the display unit (52) in real time; The display device (5) has a zoom function for the camera (53), A linked system in which the zoom function is controlled according to facial expressions in a facial region in a video.

5. 5. The interlocking system of claim 4, wherein the zoom function of the camera (53) zooms in when a facial region is recognized as smiling.

6. 5. The interlocking system according to claim 4, wherein the zoom function of the camera (53) zooms out when the facial region is recognized as an angry face.

Images