Linked Systems

Abstract

To provide an interlock system for connecting, via a communication interface, and interlocking a small-sized electric apparatus such as an electric shaver and a beauty instrument to be applied for a human body with a display device capable of displaying an image represented by a portable communication terminal.SOLUTION: An interlock system interlocks a small-sized electric apparatus (an electric shaver and a beauty instrument) having a function unit (an outer blade and inner blade, a skin electrode) for a human body with a display device 5 having a display unit 52. Each of the small-sized electric apparatus and the display device comprises a communication interface for establishing mutual connection. The display device has an auxiliary function including mirroring means for making the display unit be available as a mirror. The mirroring means displays a moving image captured by a camera 53 on the display unit in real time. The auxiliary function further includes illustration adding means for adding an auxiliary illustration 70 to a face area displayed on the display unit. The auxiliary illustration includes a process termination illustration 72 indicating termination of processing by the function unit.SELECTED DRAWING: Figure 10

Description

[Technical field]

[0001] The present invention relates to a linking system that connects and links small electrical appliances applied to the human body, such as electric shavers and beauty devices, with a display device capable of displaying images, such as a portable communication terminal, via a communication interface. [Background technology]

[0002] Linking this type of small electric device and a display device through a communication connection is disclosed, for example, in Patent Document 1, previously proposed by the present applicant. In this document, a skin care device serving as a small electric device has a receiving section for communication, and a smartphone serving as a display device has a transmitting section for communication. The smartphone is provided with a switch for controlling the electrode section (operating section) of the skin care device, and the user can operate the switch on the smartphone while using the skin care device to select the type and strength of the skin care action of the device.

[0003] Moreover, the mobile phone (display device) disclosed in Patent Document 2 is equipped with a mirroring means that projects the user's face onto the display (display unit) and enables the display to be used like a mirror. The mirroring means in this case is constituted by the combined functions of a microcomputer built into the mobile phone, a dedicated mirroring program downloaded to the mobile phone from a content provider via a communication network, and hardware components such as the camera and half mirror equipped in the mobile phone. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2014-014516 A (paragraphs 0199 to 0201, FIG. 20) [Patent Document 2] JP 2004-178146 A (paragraph number 0012, FIG. 4) Summary of the Invention [Problem to be solved by the invention]

[0005] The object of the present invention is to provide an interlocking system in which a small electrical device and a display device are communicatively connected to link them together, in which the display device has an auxiliary function that uses a display unit to assist in the use of the small electrical device, thereby improving user convenience. [Means for solving the problem]

[0006] The present invention is an interlocking system that interlocks small electric appliances 1 and 2 having functional units 12 and 32 for the human body with a display device 5 having a display unit 52, and the small electric appliances 1 and 2 and the display device 5 are provided with communication interfaces 24 and 64 for establishing a connection between them, respectively. The display device 5 is provided with an auxiliary function that assists in the use of the small electric appliances 1 and 2 using the display unit 52. The auxiliary function of the display device 5 includes a mirroring means that enables the display unit 52 to be used as a mirror, and the mirroring means is configured to display a video captured by the camera 53 on the display unit 52 in real time. The auxiliary function of the display device 5 further includes an illustration adding means that adds an auxiliary illustration 70 to a face area displayed on the display unit 52. The auxiliary illustration includes a processed illustration 72 indicating that the processing by the functional units 12 and 32 has ended, and the illustration adding means adds the auxiliary illustration 70 to the display unit 52 according to the progress of the processing by the functional units 12 and 32.

[0007] The present invention is an interlocking system that interlocks small electric appliances 1 and 2 having functional units 12 and 32 for the human body with a display device 5 having a display unit 52, and the small electric appliances 1 and 2 and the display device 5 are provided with communication interfaces 24 and 64 for establishing a connection between them, respectively. The display device 5 is provided with an auxiliary function that assists in the use of the small electric appliances 1 and 2 using the display unit 52. The auxiliary function of the display device 5 includes a mirroring means that enables the display unit 52 to be used as a mirror, and the mirroring means is configured to display a video captured by the camera 53 on the display unit 52 in real time. The auxiliary function of the display device 5 further includes an illustration adding means that adds an auxiliary illustration 70 to a face area displayed on the display unit 52. The auxiliary illustration includes an unprocessed illustration 71 that indicates that processing by the functional units 12 and 32 has not been completed, and the illustration adding means erases the auxiliary illustration 70 on the display unit 52 according to the progress of processing by the functional units 12 and 32.

[0008] In the present invention, small electric devices 1 and 2 are provided with marks 28 that are identifiable in a moving image. Marks 28 captured by camera 53 are used to identify operating parts of functional units 12 and 32 in the face area.

[0009] In the present invention, the auxiliary illustration 70 includes a processed illustration 72 indicating that processing by the functional units 12·32 has been completed, and a processing-in-progress illustration indicating that processing by the functional units 12·32 is in progress. The illustration adding means changes the processing-in-progress illustration shown on the display unit 52 to the processed illustration 72 according to the progress of processing by the functional units 12·32.

[0010] In the present invention, the auxiliary illustration 70 includes an unprocessed illustration 71 indicating that processing by the functional units 12·32 has not been completed, and an in-process illustration indicating that processing by the functional units 12·32 is in progress. The illustration adding means changes the unprocessed illustration 71 displayed on the display unit 52 to the in-process illustration according to the progress of processing by the functional units 12·32.

[0011] In the present invention, the auxiliary illustration 70 includes a plurality of types of illustrations being processed that gradually change in accordance with the progress of processing by the functional units 12 and 32. The illustration adding means gradually changes the illustration being processed for a portion of the face each time the functional units 12 and 32 pass over that portion once.

[0012] In the present invention, the illustration adding means adds the auxiliary illustration 70 in order from the part of the face region that the functional units 12 and 32 have passed through a predetermined number of times.

[0013] In the present invention, the illustration adding means erases the auxiliary illustration 70 in order from the parts of the face region that the functional units 12 and 32 have passed over a predetermined number of times. Effect of the Invention

[0014] In the interlocking system, small electric appliances 1·2 having functional units 12·32 for the human body are interlocked with a display device 5 having a display unit 52, and the small electric appliances 1·2 and the display device 5 are respectively equipped with communication interfaces 24·64 for establishing a connection with each other. The display device 5 is equipped with an auxiliary function for assisting the use of the small electric appliances 1·2 using the display unit 52. The auxiliary function of the display device 5 includes a mirroring means for enabling the display unit 52 to be used as a mirror, and the mirroring means is configured to display a video captured by a camera 53 on the display unit 52 in real time. The auxiliary function of the display device 5 further includes an illustration adding means for adding an auxiliary illustration 70 to a face area displayed on the display unit 52. The auxiliary illustration includes a processed illustration 72 indicating that processing by the functional units 12·32 has been completed. When the illustration adding means adds the auxiliary illustration 70 to the display unit 52 in accordance with the progress of processing by the functional units 12·32, the user can grasp the part of the face that has been processed by the functional units 12·32.

[0015] In the interlocking system, small electric appliances 1·2 having functional units 12·32 for the human body are interlocked with a display device 5 having a display unit 52, and the small electric appliances 1·2 and the display device 5 are respectively equipped with communication interfaces 24·64 for establishing a connection with each other. The display device 5 is equipped with an auxiliary function for assisting the use of the small electric appliances 1·2 using the display unit 52. The auxiliary function of the display device 5 includes a mirroring means for enabling the display unit 52 to be used as a mirror, and the mirroring means is configured to display a video captured by a camera 53 on the display unit 52 in real time. The auxiliary function of the display device 5 further includes an illustration adding means for adding an auxiliary illustration 70 to a face area displayed on the display unit 52. The auxiliary illustration includes an unprocessed illustration 71 indicating that processing by the functional units 12·32 has not been completed. When the illustration adding means erases the auxiliary illustration 70 on the display unit 52 in accordance with the progress of processing by the functional units 12·32, the user can grasp the part of the face that has not been processed by the functional units 12·32.

[0016] The small electric devices 1 and 2 are provided with marks 28 that are identifiable in the video. By identifying the operating parts of the functional units 12 and 32 in the face area using the marks 28 captured by the camera 53, the parts of the face that the functional units 12 and 32 directly face can be detected.

[0017] The auxiliary illustrations 70 include a processed illustration 72, which indicates that processing by the functional unit 12·32 has been completed, and an in-process illustration, which indicates that processing by the functional unit 12·32 is in progress. When the illustration adding means changes the in-process illustration displayed on the display unit 52 to the processed illustration 72 in accordance with the progress of processing by the functional unit 12·32, the user can grasp which parts of the face are in the middle of being processed by the functional unit 12·32.

[0018] The auxiliary illustrations 70 include an unprocessed illustration 71, which indicates that processing by the functional unit 12·32 has not yet finished, and an in-processing illustration, which indicates that processing by the functional unit 12·32 is in progress. When the illustration adding means changes the unprocessed illustration 71 displayed on the display unit 52 to the in-processing illustration in accordance with the progress of processing by the functional unit 12·32, the user can grasp which parts of the face are in the middle of being processed by the functional unit 12·32.

[0019] The auxiliary illustrations 70 include a plurality of types of illustrations in progress that change in stages according to the progress of processing by the functional unit 12·32. The illustration adding means changes the illustration in progress of a part of the face in stages each time the functional unit 12·32 passes over that part of the face, allowing the user to grasp how much of the part of the face that is in the middle of being processed by the functional unit 12·32 has been processed.

[0020] The illustration adding means can prevent partial insufficient processing by adding the auxiliary illustration 70 in order from the parts of the face region that the functional units 12 and 32 have passed through a predetermined number of times.

[0021] The illustration adding means can prevent partial insufficient processing from occurring by erasing the auxiliary illustration 70 in order from the parts of the face region that the functional units 12 and 32 have passed through a predetermined number of times. [Brief description of the drawings]

[0022] [Figure 1] FIG. 1 is a schematic diagram of an electric shaver and a smartphone that constitute a linkage system according to a first embodiment (the present invention). [Diagram 2] This is a block diagram of the control system of an electric razor and a smartphone. [Diagram 3] 13 is a flowchart showing a control procedure performed by a video still means and a lighting control means of the auxiliary application. [Figure 4] 11 is a flowchart showing a control procedure by a protection program for a smartphone. [Diagram 5]11 is a timing chart showing an example of a situation in which an electric shaver and a smartphone are linked together. [Figure 6] 11 is a timing chart showing an example of a situation in which an electric shaver and a smartphone are linked together. [Figure 7] 11 is a timing chart showing an example of a situation in which an electric shaver and a smartphone are linked together. [Figure 8] A figure showing a smartphone with a user's face and an electric razor displayed on the display. [Figure 9] A diagram showing the relationship between the position of a smartphone with respect to a user's face and the front angle of the smartphone. [Figure 10] FIG. 13 is a diagram showing a state in which an auxiliary illustration is added to the user's face shown on the display. [Figure 11] FIG. 13 is a diagram showing the operation of a reversal instruction unit. [Figure 12] 13A and 13B are diagrams illustrating another operation of the inversion instruction means. [Figure 13] FIG. 13 is a diagram showing still another operation of the inversion instruction means. [Figure 14] FIG. 2 is a diagram showing the layout of each display and each button on a display. [Figure 15] 11A to 11C are diagrams showing alternative arrangements of displays, buttons, etc. on the display. [Figure 16] FIG. 13 shows the display switched to displaying instructions. [Figure 17] 13 is a flowchart showing a control procedure performed by the instruction display means. [Figure 18] 11 is a timing chart showing an example of a situation in which an electric shaver and a smartphone are linked together. [Figure 19] FIG. 11 is a schematic diagram of an electric shaver and a smartphone constituting a linkage system according to a second embodiment. [Figure 20] FIG. 11 is a schematic diagram of a beauty tool and a smartphone that constitute a linkage system according to a third embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] Example 1 Example 1 (the present invention) applied to a system for linking an electric shaver and a smartphone will be described with reference to Figures 1 to 18. In this example, up, down, left, and right refer to the crossed arrows shown in Figure 1 and the up, down, left, and right indications given near each arrow.

[0024] 1 and 2, an electric shaver (small electrical device) 1 comprises a vertically long main body case 10 that also serves as a grip, and a razor head 11 supported by the upper part of the main body case 10, and an outer blade (cutting blade) 13 and an inner blade (cutting blade) 14 that constitute a functional part 12 for shaving facial skin (human body) are arranged on the upper part of the razor head 11. A switch button 15 that can be pressed inward is provided on the surface of the main body case 10, and inside the main body case 10 are housed a motor 16 as a drive source for the inner blade 14, a vertically long control board 17, and a secondary battery (cell) 18 that is the overall power source for the electric shaver 1. Mounted on the control board 17 are 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 attitude of the electric razor 1, a communication interface 24 that operates according to the Bluetooth communication standard, and a control unit 25 that controls the entire electric razor 1 including these components. Note that the drive switch (operation switch) 21 is not limited to a push type, and may be a slide type.

[0025] The smartphone (display device) 5 has a thin housing 50 whose vertical dimension is greater than its horizontal dimension, and a touch panel display (display unit) 52 occupies most of the front surface 51 of the housing 50. A camera 53 and a speaker 54 are arranged in the center of the upper left and right of the front surface 51, and an LED (illumination device) 56 is arranged to the right of the two 53 and 54. Inside the housing 50, a vertically long control board 57, a vibrator 59, and a battery pack (not shown) that is the entire power source of the smartphone 5 are housed. In addition to a wireless interface for communicating with a base station, the control board 57 is equipped with a memory 61 that stores various programs and data, an acceleration sensor 62 and a gyro sensor 63 for detecting the attitude of the smartphone 5, a communication interface 64 that operates according to the Bluetooth standard, and a control unit 65 that controls the entire smartphone 5 including these components.

[0026] Memory 61 of smartphone 5 stores a camera program for displaying a video captured by camera 53 on display 52. ​​The camera program includes a zoom function for enlarging or reducing the video captured by camera 53, and a face recognition function for detecting a face area from the video captured by camera 53. The zoom method used by the zoom function may be either optical zoom or digital zoom, or both.

[0027] The memory 61 also stores an auxiliary app, which is an application program that assists the user in using the electric razor 1. The auxiliary app 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 app includes a mirroring means that enables the display 52 to be used as a mirror, a video stilling means that stills the video image displayed on the display 52, and a lighting control means that controls the lighting state of the LED 56. The auxiliary app also includes a zoom control means that controls the zoom function of the camera 53, an illustration adding means that adds an auxiliary illustration 70 (see FIG. 10) to the face area displayed on the display 52, and an inversion instruction means that instructs the user to turn the smartphone 5 upside down. The auxiliary app also includes an equipment status notifying means that causes the display 52 to display the equipment status of the electric razor 1, an electric equipment control means that transmits a control signal for controlling the electric razor 1 to the control unit 25, and an instruction display means that causes the display 52 to display an instruction manual for the electric razor 1. This auxiliary application is a resident application program, and remains in a standby state in the background until it starts to operate in conjunction with turning on the drive switch 21 of the electric shaver 1.

[0028] (Mirroring method) The mirroring means starts the camera program stored in memory 61, starts shooting with camera 53, and displays the video shot by camera 53 on display 52. ​​While the camera program is running, the face of the user facing the front 51 of smartphone 5 is photographed by camera 53 and displayed on display 52, allowing the user to use display 52 as if it were a mirror. The mirroring means is the core of the auxiliary app, and starts operating at the same time as the auxiliary app is launched.

[0029] (Video stills) The video stilling means freezes the video displayed on the display 52 in accordance with the user's operation while the mirroring means is in operation. Specifically, when the user turns off the drive switch 21 while the electric razor 1 is in operation, the video stilling means freezes the video displayed on the display 52, and when the user turns on the drive switch 21 again, the video stilling means cancels the still state of the video. Note that the drive switch 21 has been operated, this is transmitted from the control unit 25 of the electric razor 1 to the smartphone 5 via the communication interfaces 24·64. With the part of the face that the user wants to check captured by the camera 53, the user can freeze the video by turning off the drive switch 21, and then move the still display 52 to a position where it is easy to see, such as in front of the face, to easily check that part.

[0030] (Lighting control means) The illumination control means controls the LED 56 of the smartphone 5 to light up when the connection between the electric shaver 1 and the smartphone 5 is established. The LED 56 has a plurality of lighting patterns, and in this embodiment, the LED 56 is lit up in a first lighting pattern when the electric shaver 1 is driven (when a moving image is displayed on the display 52), and is lit up in a second lighting pattern when the electric shaver 1 is stopped (when the moving image on the display 52 is still). In this embodiment, the first lighting pattern is a constant lighting state, and the second lighting pattern is a flashing state of the same color, but other than this, for example, both lighting patterns may be constant lighting states with different color tones (emission colors). In this embodiment, the camera 53 and the LED 56 are arranged on the same side (front 51) of the smartphone 5, so that when the electric shaver 1 and the smartphone 5 are used in a dimly lit place, the LED 56 can illuminate the subject of the camera 53, i.e., the user's face. Therefore, regardless of the brightness of the place where the electric shaver 1 and smartphone 5 are used, the user's face is always displayed clearly on the display 52, improving user convenience. Note that the lighting device 56 is not limited to one built into the smartphone 5 as in this embodiment, but the concept also includes one that is attached to the smartphone 5 externally and controlled by an auxiliary app.

[0031] As shown in the flowchart of Fig. 3, when the user turns on the drive switch 21 to power on the electric razor 1 (YES in step S1), the motor 16 starts and the functional unit 12 begins to operate. At the same time, the communication interface 24 of the electric razor 1 is enabled (step S2), and a wireless connection with the communication interface 64 of the smartphone 5 is established. Note that the smartphone 5 is already running at the time the electric razor 1 is turned on, and its communication interface 64 is also enabled. In addition, an auxiliary app that assists in the use of the electric razor 1 is in a standby state in the background.

[0032] When the connection with the electric shaver 1 is established, 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 launch of the auxiliary application (step S3). The user can move the auxiliary application to the foreground by tapping the push notification, and the screen of the auxiliary application can be displayed over the entire display 52. ​​When the auxiliary application is launched in the foreground, the mirroring means starts to operate, and the video captured by the camera 53 is displayed on the display 52 (step S4). In addition, the lighting control means lights up the LED 56 in the first lighting pattern (step S5).

[0033] When the mirroring means starts to operate, the video still means goes into a standby state and waits for the drive switch 21 of the electric shaver 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 still means freezes the video displayed on the display 52 (step S7), and the lighting control means switches the LEDs 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 still means releases the still state of the video (step S10), and the lighting control means switches the LEDs 56 to the first lighting pattern (step S5), and waits again in step S6 for the drive switch 21 to be turned off.

[0034] The control unit 25 of the electric shaver 1 keeps the communication interface 24 active immediately after the drive switch 21 is turned off, and disables 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 that stops the motor 16 when the continuous drive time of the motor 16 exceeds a predetermined time (5 minutes in this embodiment), and when the motor 16 is stopped by this timer function, the communication interface 24 is disabled after a time (5 minutes in this embodiment) that is shorter than the predetermined time has elapsed since the motor was stopped.

[0035] A protection program is stored in the smartphone 5, which turns off the display 52 when it is deemed that the user has left the smartphone 5 unattended for a long period of time. If the video stilling means operates for a long period of time while the auxiliary app is running, that is, if the video shown on the display 52 remains still for a long period of time, there is a possibility that the user has left the smartphone 5 unattended without turning off the display 52 after finishing shaving and stopping the electric shaver 1.

[0036] On the other hand, when the video stilling means is not operating and a video is being displayed on display 52, i.e., when display 52 is in the mirrored state, it is highly likely that the user is shaving with electric razor 1 while using smartphone 5 like a hand mirror. However, even in the mirrored state, if the user's face or electric razor 1 is not captured by camera 53 for a long period of time, it is possible that the user has left smartphone 5 together with electric razor 1 in the operating state. In these cases, the protection program turns off display 52 to avoid unnecessary consumption of the battery pack.

[0037] A specific control procedure by the protection program is shown in the flowchart of Fig. 4. The protection program starts timing using a timer (step S11) when the auxiliary application is launched in the foreground (at this point, the mirroring means is operating, but the video still means is not operating). After this, the protection program waits for a predetermined time (five minutes in this embodiment) to elapse after starting timing, for the video still means to operate and freeze display 52, or for the user's face or electric shaver 1 to be detected by camera 53 (steps S12 to S14).

[0038] 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), it is assumed that the user is using the smartphone 5, so the process returns to step S11 to reset the timer and start timing again. On the other hand, if the predetermined time has elapsed without the user's face or the electric razor 1 being detected and without the display 52 becoming still (NO in steps S13 to S14, YES in step S12), it is assumed that the user has left the smartphone 5 together with the electric razor 1 in an operational state, so the protection program proceeds to step S15 to turn off the display 52.

[0039] If the video stilling means operates and the display 52 is still (YES in step S13), the process proceeds to step S16, resets the timer, and starts timing again. If a predetermined time (5 minutes in this embodiment) has passed since the start of timing before the still state is released (NO in step S18, YES in step S17), it is assumed that the user has left the smartphone 5 without turning off the display 52 after finishing shaving and stopping the electric shaver 1, so the protection program proceeds to step S15 and turns off the display 52. ​​On the other hand, if the still state is released before the predetermined time has passed (NO in step S17, YES in step S18), the process returns to step S11, resets the timer, and starts timing again. In addition to the above, the protection program can turn off the display 52 when the motor 16 is stopped by the timer function of the electric shaver 1.

[0040] The timing chart in FIG. 5 shows an example of a situation in which the drive switch 21 of the electric shaver 1 and the auxiliary app of the smartphone 5 and the like work together. When the drive switch 21 is turned on at time t1, the motor 16 of the electric shaver 1 starts, and the communication interface 24 is enabled. At the same time, the auxiliary app waiting in the background of the smartphone 5 displays a push notification on the display 52. ​​Then, after a tap operation by the user, the auxiliary app starts in the foreground, and the display 52 is mirrored by the mirroring means. The LED 56 also lights up in the first lighting pattern. At the next time t2 (t2-t1<5 minutes), the drive switch 21 is turned off, and the motor 16 of the electric shaver 1 stops. At the same time, in the smartphone 5, the video displayed on the display 52 stops, and the LED 56 switches to the second lighting pattern.

[0041] At the next time point t3 (t3-t2<5 minutes), the driving switch 21 is turned on, and the motor 16 of the electric shaver 1 is started again. At the same time, in the smartphone 5, the video stilling means releases the still state of the video, the display 52 is mirrored again, and the LED 56 is switched to the first lighting pattern. At the next time point t4 (t4-t3<5 minutes), the driving switch 21 is turned off, and the motor 16 stops as at the previous time point t2, the video on the display 52 is stilled, and the LED 56 is switched to the second lighting pattern. At the next time point t5 (t5-t4=5 minutes), the display 52 is turned off by the above-mentioned protection program. At the next time point t6 (t6-t4=10 minutes), the communication interface 24 of the electric shaver 1 is disabled. In addition, in the smartphone 5, in response to the disconnection from the electric shaver 1, the auxiliary app automatically transitions to a standby state in the background, and the LED 56 is turned off. The timing for turning off the LED 56 may be the time t5 when the display 52 is turned off.

[0042] The timing chart in FIG. 6 shows a case where the electric shaver 1 is left in a driven state together with the smartphone 5 running the auxiliary application. The time t12 when the electric shaver 1 and the smartphone 5 are left is several minutes (2 to 3 minutes) after the time t11 when the drive switch 21 is turned on. In the electric shaver 1, the motor 16 automatically stops at time t13, which is 5 minutes after the drive switch 21 is turned on (time t11), and the communication interface 24 is disabled at time t15, which is 5 minutes after time t13. In the smartphone 5, since the camera 53 cannot detect the user's face or the electric shaver 1 after time t12 when the smartphone 5 is left by the user, the display 52 is turned off by the above-mentioned protection program at time t14, 5 minutes after time t12. In addition, at time t15 when the connection with the electric shaver 1 is cut off, the auxiliary application automatically transitions to a standby state in the background, and the LED 56 is turned off. Note that if the camera 53 detects the user's face or the electric razor 1 before time t14, i.e., before five minutes have elapsed since time t12, the timer for turning off the display 52 is reset. The timing for turning off the display 52 by the protection program of the smartphone 5 may be time t13 when the motor 16 of the electric razor 1 automatically stops. The timing for disabling the communication interface 24, the timing for the auxiliary app to transition to a standby state in the background, and the timing for the LED 56 to turn off may also be time t13.

[0043] The timing chart in Fig. 7 shows another control method using the auxiliary app and protection program of the smartphone 5. The period from time t21 when the drive switch 21 is turned on to time t22 when the camera 53 is no longer able to detect the user's face or the electric shaver 1 is similar to that from time t11 to t12 in Fig. 6, but here, at time t23, one minute after time t22, the protection program turns off the display 52, and the electric device control means of the auxiliary app (described in detail later) transmits a control signal to the control unit 25 of the electric shaver 1 to decelerate the motor 16. Then, at time t24, one minute after time t23, the motor 16 of the electric shaver 1 stops, the communication interface 24 is disabled, the auxiliary app of the smartphone 5 transitions to a standby state in the background, and the LED 56 turns off. Note that if the camera 53 detects the user's face or the electric shaver 1 before time t23 is reached, i.e., before one minute has elapsed from time t22, the timer for turning off the display 52 is reset. Also, instead of decelerating the motor 16 at time t23, the motor 16 may be stopped, in which case the communication interface 24 can be disabled, the auxiliary application can be put into a standby state, and the LED 56 can be turned off at time t23.

[0044] The operation for controlling the video still means is not limited to the switch operation of the electric razor 1 described above, but may be, for example, a tap operation by the user on the display 52 of the smartphone 5, 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 gyro sensors 23·63 built into the electric razor 1 and the smartphone 5, respectively. The details of the movement operation of the electric razor 1 are transmitted from the control unit 25 to the smartphone 5 via the communication interfaces 24·64.

[0045] (Zoom control means) The zoom control means controls the zoom function of the camera 53 in conjunction with the movement operation of the electric razor 1 and the smartphone 5 by the user. The movement operation of the electric razor 1 is detected by the acceleration sensor 22 and the gyro sensor 23 built in the electric razor 1, and the contents are transmitted from the control unit 25 to the smartphone 5 via the communication interfaces 24·64. Based on the contents of this movement operation, the zoom control means controls the zoom function of the camera 53. For example, when the electric razor 1 is moving with a relatively large stroke or when the electric razor 1 is moving relatively quickly, it is assumed that the user is shaving a wide range of the face, so 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 razor 1 is moving with a relatively small stroke or when the electric razor 1 is moving relatively slowly, it is assumed that the user is shaving a part of the face with emphasis, so the zoom control means zooms in the camera 53 to display an enlarged part of the face on the display 52.

[0046] Moreover, the video captured by the camera 53 can be analyzed to detect the movement of the electric razor 1 by the user. To facilitate this detection, the outer surface of the electric razor 1 is provided with a plurality of markings 28 that are identifiable in the video (see FIG. 8). The markings 28 are mainly disposed in a dispersed manner around the functional unit 12 so that some of the markings 28 are always visible on the camera 53 regardless of the grip posture of the electric razor 1 by the user. By observing the movement of each marking 28 in the video, the movement stroke and movement speed of the electric razor 1 can be detected, and the zoom function can be controlled in the same manner as above based on the magnitude of these marks.

[0047] Furthermore, as shown in FIG. 8, by using the face recognition function of the camera program in addition, the positional relationship between the face area in the video and each of the marks 28 of the electric shaver 1 can be compared to detect the part of the face that the functional unit 12 of the electric shaver 1 faces. The zoom function of the camera 53 may be controlled according to the part of the face detected in this way. In FIG. 8, the functional unit 12 faces directly below the user's nose, which is detected from the positions of the two marks 28 around the functional unit 12 in the face area. When the functional unit 12 is located below the nose, the zoom control means, for example, zooms in the camera 53 to enlarge and display the part below the nose on the display 52. ​​This is because, normally, 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 concentrates on shaving the beard under the nose.

[0048] 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 the movement operation. Specifically, for example, as shown in FIG. 9(a), when the front 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 display the entire face on the display 52, and therefore the zoom control means zooms out the camera 53. Conversely, as shown in FIG. 9(b), when the front 51 of the smartphone 5 is at an angle of about 45° with respect to the horizontal plane, it is assumed that the user is moving the smartphone 5 diagonally below the face to display only a part of the face, such as the chin, on the display 52, and therefore the zoom control means zooms in the camera 53. In addition, when the sensors 62 and 63 detect that the user has performed a specific movement operation, such as shaking the smartphone 5, the zoom magnification of the camera 53 may be changed.

[0049] In addition, the movement operation of the smartphone 5 can be detected by utilizing the face recognition function of the camera program. 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, and in this case, the zoom control means, for example, zooms in the camera 53 to enlarge and display 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, and in this case, the zoom control means, for example, zooms out the camera 53 to display 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 smile, 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.

[0050] The zoom control means may start operating at the same time as the auxiliary application is started, or may start operating according to the user's desire after the auxiliary application is started. Note that the operation for controlling the zoom control means is not limited to the above-mentioned movement operation of the electric shaver 1 and the smartphone 5, and for example, the zoom function of the camera 53 may be controlled in conjunction with a switch operation on the side of the electric shaver 1. One example of the switch is a control switch for the rotation speed of the motor 16 provided on the electric shaver 1. For example, when an operation to reduce the rotation speed is performed, it is assumed that the user is carefully shaving a part of the face, so the zoom control means zooms in the camera 53. In addition, the zoom function of the camera 53 can also be controlled by the user directly operating the display 52 or a button on the side of the smartphone 5.

[0051] (Method of adding illustrations) The illustration adding means adds an auxiliary illustration 70 to the face area displayed on the display 52 of the smartphone 5, as shown in FIG. 10. The auxiliary illustration 70 according to this embodiment is composed of an unprocessed illustration 71 showing an exaggerated beard and a processed illustration 72 showing that the beard has been shaved. When the illustration adding means starts its operation, it adds the unprocessed illustration 71 to the area of ​​the face area detected by the face recognition function, including the area under the nose, the chin, both cheeks, and the sideburns, and when it determines that the user has completed shaving each part, it changes the unprocessed illustration 71 of that part to the processed illustration 72. When all the unprocessed illustrations 71 on the display 52 have been changed to the processed illustrations 72, the user can confirm that all of the beard has been shaved (there is no unshaved hair).

[0052] Completion of shaving each part of the face is detected by utilizing the marks 28 on the outer surface of the electric shaver 1. As explained above in the section on the zoom control means, the part of the face directly faced by the functional unit 12 of the electric shaver 1 can be detected by comparing the positional relationship between the face area in the video and each of the marks 28 on the electric shaver 1. When the functional unit 12 directly faces a part of the face, i.e., the number of times it has passed by the part reaches a predetermined number, the illustration adding means determines that shaving of that part is complete and changes the unprocessed illustration 71 to the processed illustration 72.

[0053] The illustration adding means may start its operation at the same time as the auxiliary application is started, or may start its operation according to the user's desire after the auxiliary application is started. 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 adding means erases the unprocessed illustration 71 in order from the part determined to have been shaved. When all the unprocessed illustrations 71 have disappeared from the display 52, the user can confirm that all the beard has been shaved. Furthermore, the auxiliary illustration 70 may include an in-processing illustration indicating that processing is in progress. For example, the auxiliary illustration 70 may include a plurality of in-processing illustrations in which the beard is gradually thinner than the unprocessed illustration 71, and each time the functional unit 12 of the electric shaver 1 passes over a part of the face once, the auxiliary illustration 70 of that part may be changed to an in-processing illustration with a thin beard.

[0054] (Inversion indication means) The inversion instruction means instructs a user who uses the auxiliary app with the smartphone 5 in the normal position to invert the smartphone 5 upside down. The normal position is a position 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 an inverted position in which the smartphone 5 is inverted upside down, the camera 53 is located at the lower part of the smartphone 5, making it easier to photograph the lower part of the face where beard grows, particularly the area under the chin. The normal or inverted position of the smartphone 5 is detected by the built-in gyro sensor 63.

[0055] For example, as shown in Fig. 11(a), when the smartphone 5 is in the normal position, upside-down inverted characters can be displayed on the display 52, and this can be used as the inversion instruction means. When the user sees the inverted characters and intuitively turns the smartphone 5 upside-down, normal characters are displayed in the correct orientation on the display 52, as shown in Fig. 11(b). Note that the normal characters in Fig. 11(b) may be an obstacle when the user's face is projected on the display 52, so they may be made to disappear over time or may be omitted.

[0056] Also, as shown in Fig. 12(a), when the smartphone 5 is in the normal position, characters such as "Please turn over" that directly instruct the user to turn over 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 over the smartphone 5 upside down in accordance with this character, characters indicating that the smartphone 5 is in the correct position are displayed on the display 52 as shown in Fig. 12(b), but these characters may be made to disappear over time or may be omitted for the same reason as the normal characters in Fig. 11(b). Note that instead of the characters in Fig. 12(a), a symbol such as a U-shaped arrow may be displayed and used as the inversion instruction means.

[0057] Also, as shown in Fig. 13(a), when the smartphone 5 is in the normal position, the entire video displayed on the display 52 can be inverted upside down, and this can be used as an inversion instruction means. When a user sees his / her own face inverted upside down and intuitively turns the smartphone 5 upside down, the video in the correct orientation is displayed on the display 52, as shown in Fig. 13(b). Here too, as in Fig. 12(b), a character may be displayed indicating that the smartphone 5 is in the correct position.

[0058] (Device status notification means) The device status notification means displays the device status, such as the remaining battery power of the electric shaver 1, on the display 52, as shown in Fig. 14. This display is made up of a battery level indicator 75 showing the remaining power of the secondary battery 18 of the electric shaver 1, a replacement indicator 76 showing when to replace the outer blade 13 and the inner blade 14, a cleaning indicator 77 showing when to clean the functional unit 12 including the hair scraps storage chamber, a load indicator 78 showing the magnitude of the load acting on the functional unit 12, and a time indicator 79 showing the continuous usage time of the electric shaver 1. The device status notification means starts operating simultaneously with the launch of the auxiliary app, but can also be stopped following a subsequent user operation.

[0059] The battery level indicator 75 consists of a numerical value indicating the remaining charge of the secondary battery 18 and a five-level scale, and changes color from green to yellow to red as the remaining battery charge decreases. Information regarding the remaining charge of the secondary battery 18 is transmitted from the control unit 25 of the electric shaver 1 to the smartphone 5 via the communication interfaces 24·64. When the remaining battery charge falls below a predetermined percentage (e.g., 20%), the device status notification means changes the color of the battery level indicator 75 to red, drives the vibrator 59 of the smartphone 5, and lights up the LED 56 in an emergency pattern to notify the user that the remaining battery charge is low.

[0060] The replacement indicator 76 does not light up when the blades 13 / 14 do not need to be replaced, but lights up when the time to replace them approaches. The control unit 25 of the electric shaver 1 manages the cumulative usage time since the last replacement for each of the outer blade 13 and the inner blade 14, and when this cumulative usage time reaches a predetermined time, transmits a message to the smartphone 5 that the time to replace the blades 13 / 14 is approaching. The device status notification means receiving this message lights up the replacement indicator 76 for the blades 13 / 14 that are nearing the time to replace them on the display 52, drives the vibrator 59, and also lights up the LED 56 in an emergency pattern, to urge the user to replace the blades 13 / 14. After the user replaces the blades 13·14, for example by pressing and holding the replacement indicator 76 on the display 52, the device status notifying means determines that replacement of the blades 13·14 is complete, turns off the replacement indicator 76, and transmits a notification to the control unit 25 of the electric shaver 1 that replacement of the blades 13·14 has been completed. The control unit 25 then resets the accumulated usage time for the replaced blades 13·14. It should be noted that the approaching time to replace the blades 13·14 may be determined based on the number of times the drive switch 21 has been turned on and off, in addition to the accumulated usage time.

[0061] The cleaning display 77 is not lit when cleaning of the functional unit 12 is not necessary, and is lit when the time for cleaning approaches. The hair chip storage chamber constituting the functional unit 12 is provided with an optical sensor for detecting the amount of hair chips accumulated, and when the amount of hair chips accumulated exceeds a predetermined reference value, the control unit 25 transmits to the smartphone 5 that the time for cleaning is approaching. The device status notification means receiving this information turns on the cleaning display 77 on the display 52, drives the vibrator 59, and further turns on the LED 56 in an emergency pattern to prompt the user to clean the functional unit 12. When the user performs cleaning and the amount of hair chips accumulated falls below a predetermined value, the control unit 25 transmits to the smartphone 5 that cleaning has been completed, and the device status notification means receiving this information turns off the cleaning display 77. The approach of the time for cleaning the functional unit 12 may be determined based on the amount of hair chips accumulated, the cumulative usage time since the previous cleaning, or the number of times the drive switch 21 has been turned on and off.

[0062] The load indicator 78 indicates the magnitude of the load acting on the functional unit 12 of the electric shaver 1, thereby encouraging the user to adjust the strength of the force with which the functional unit 12 is pressed against the facial skin. There is a correlation between the pressing force of the functional unit 12 and the magnitude of the load, and the stronger 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 shaving while checking the load indicator 78, the user can always maintain the pressing force of the functional unit 12 at an appropriate strength, thereby reducing the burden on the facial skin.

[0063] The load current flowing through the motor 16 is used as an indicator of the magnitude of the load on the functional unit 12. The greater the load on the functional unit 12, the greater the value of the load current. The control unit 25 of the electric shaver 1 monitors the magnitude of this load current and transmits it to the smartphone 5. The load display 78 is composed of a major arc-shaped scale indicating the magnitude of the load and an indicator needle pointing to one point on the scale, and from the lower left to the lower right of the scale, a low load zone (green) indicating a light load (weak pressing force), a medium load zone (blue) indicating a moderate load (pressing force), a high load zone (green) indicating a heavy load (strong pressing force), and an overload zone (red) indicating an excessive load (pressing force) are set in this order. 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 state notification means drives the vibrator 59 and also lights up the LED 56 in an emergency pattern to alert the user.

[0064] When the user taps the load display 78 on the display 52, the load display 78 is switched to the second load display 80 shown in FIG. 15. The second load display 80 is composed of two concentrically arranged major arc-shaped scales and arrows pointing to a point on each scale. The outer scale indicates the rotation speed of the motor 16, and the inner scale indicates the magnitude of the load torque, and these pieces of information are transmitted from the control unit 25 of the electric shaver 1 to the smartphone 5. When the rotation 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 state notification means determines that the load on the functional unit 12 is excessive, drives the vibrator 59, and further lights up the LED 56 in an emergency pattern to alert the user. 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.

[0065] The time display 79 displays the continuous use time of the electric shaver 1 per use, that is, the continuous drive time of the motor 16, in seconds. When the user turns off the drive switch 21 and the motor 16 stops, the continuous use time displayed by the time display 79 is reset. When a predetermined time (5 minutes) has elapsed since the drive switch 21 was turned on and the motor 16 stops due to the timer function, the continuous use time is also reset. When, 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 red, for example, drives the vibrator 59, and further lights up the LED 56 in an emergency pattern to alert the user. This continuous use time may be measured on the electric shaver 1 side and transmitted to the smartphone 5, or may be measured on the smartphone 5 side. As described above, the fact that the drive switch 21 has been turned on or off is transmitted to the smartphone 5, so that the continuous use time can also be measured on the smartphone 5 side.

[0066] (Electrical equipment control means) The electric appliance control means transmits control signals for controlling the electric razor 1 to the control unit 25 via the communication interfaces 24·64. At the left end of the display 52, there are arranged, as user operable items, a rotation speed lever 81 for changing the rotation speed of the motor 16 of the electric razor 1, a drive button 82 for turning the motor 16 on and off, and a lock button 83 for locking the motor 16 in a driven state regardless of the above-mentioned timer function.

[0067] When the user slides the rotation speed lever 81 up or down, the electric appliance control means transmits a control signal for increasing or decreasing the speed of the motor 16 to the control unit 25 of the electric shaver 1 via the communication interfaces 24·64. When the user taps the drive button 82 while the motor 16 is stopped, the electric appliance control means transmits a control signal for starting the motor 16 to the control unit 25. When the user taps the drive button 82 while the motor 16 is in a driven state, the electric appliance control means transmits a control signal for stopping the motor 16 to the control unit 25. When the user taps the lock button 83 while the motor 16 is in a driven state, the electric appliance 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 driven state, and transmits a control signal for unlocking the motor 16 to the control unit 25 if the motor 16 is locked in the driven state. When the motor 16 is locked in the driven state, the motor 16 will not stop against the user's will even if the user inadvertently touches the switch button 15.

[0068] In addition to the above, the electric appliance control means can control the electric razor 1 in accordance with the displacement operation of the smartphone 5 by the user. For example, when the user tilts the smartphone 5 to the left or right, the electric appliance control means transmits a control signal to the control unit 25 for increasing the speed of the motor 16, and when the user tilts the smartphone 5 to the other left or right, the electric appliance control means transmits a control signal to the control unit 25 for decelerating the motor 16. The movement operation of the smartphone 5 by the user can be detected by the acceleration sensor 62 and the gyro sensor 63 built into the smartphone 5.

[0069] Furthermore, the electric appliance control means can control the number of rotations of the motor 16 in accordance with the part of the face that the functional unit 12 faces, for example, by slowing down the motor 16 when the functional unit 12 of the electric razor 1 faces directly below the nose of the user's face. As explained above in the section on the zoom control means, the part of the face that the functional unit 12 faces directly can be detected by comparing the positional relationship between the face area in the video and each of the marks 28 of the electric razor 1. Furthermore, as explained in the timing chart of FIG. 7, when it is deemed that the user has left the electric razor 1 or smartphone 5 unattended, the electric appliance control means can transmit a control signal to the control unit 25 to slow down or stop the motor 16 even if the user does not operate the smartphone 5.

[0070] (Instruction display means) The instruction manual display means displays the instruction manual for the electric shaver 1 on the display 52 of the smartphone 5. When the user taps an 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 disposed in a corner of the display 52 in the instruction manual display, and 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.

[0071] The instruction manual in this embodiment is composed of multiple pages such as "Table of Contents", "Names and Functions of Each Part", "How to Use", "Replacing the Blade", and "Cleaning the Blade". The table of contents is displayed immediately after the display 52 is switched to the instruction manual display, so the user can tap the link to each page included in the table of contents or slide the display 52 left and right to display the desired page on the display 52, and can also pinch in to reduce the page and pinch out to enlarge the page. Note that instead of or in addition to the instruction manual button 85 in this embodiment, multiple buttons such as "How to Use", "Changing the Blade", and "Cleaning the Blade" may be arranged on the display 52, and when the user taps each of these buttons, the corresponding page of the instruction manual may be displayed. The data for the instruction manual may be included in the auxiliary app in advance, or may be downloaded via the Internet from a server of the manufacturer of the electric shaver 1 when the instruction manual button 85 is tapped.

[0072] In the flowchart of Fig. 17, immediately after the auxiliary application is launched on the smartphone 5, the display 52 is in a mirror display. When the instruction button 85 on the display 52 is tapped (YES in step S21), the instruction display means switches the display 52 from the mirror display to the instruction display (step S22). At the same time, in accordance with a control signal transmitted from the electric appliance control means to the electric shaver 1, the control unit 25 stops the motor 16 (step S23). Thereafter, the process waits until the drive switch 21 of the electric shaver 1 is turned on or the mirror button 86 on the display 52 is tapped (steps S24 to S25).

[0073] When the drive switch 21 of the electric razor 1 is turned on (YES in step S24), the process proceeds to step S26, where 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 24·64, and the instruction display means receiving this switches the display 52 from the instruction 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, where the instruction display means switches the display 52 to the mirror display. At the same time, the control unit 25 starts the motor 16 in accordance with the control signal transmitted from the electric appliance control means to the electric razor 1.

[0074] The timing chart of Fig. 18 shows an example of a case where the display 52 and the motor 16 are controlled according to the flowchart of Fig. 17. At time t31, the instruction manual button 85 is tapped, the display 52 is switched from the mirror display to the instruction manual display, and the motor 16 of the electric razor 1 is stopped. At the next time t32, the mirror button 86 is tapped, the display 52 is switched to the mirror display, and the motor 16 is started. At the next time t33, the instruction manual button 85 is tapped in the same manner as at time t31, the display 52 is switched 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 is switched to the mirror display, and the motor 16 is started.

[0075] (Example 2) Figure 19 shows Example 2 of the interlocking system. The razor head 11 of the electric shaver 1 according to Example 2 has a pair of front and rear functional parts 12, and a skin elasticity sensor (skin elasticity measuring means) 40 is provided between the two functional parts 12. The functional part 12 is composed of an outer blade (cutting blade) 13 and an inner blade (cutting blade) 14. As the skin elasticity sensor 40, various types of conventionally known sensors can be used, such as a vibrator sensor disclosed in Japanese Patent Application Laid-Open No. 2009-153727 and a pressure sensor disclosed in Japanese Patent Application Laid-Open No. 61-181437. The skin elasticity sensor 40 according to this example is composed of a contactor 41 that contacts the skin surface simultaneously with the outer blade 13, a spring 42 that biases the contactor 41 toward the skin surface, and the like. Skin elasticity sensor (skin elasticity measuring means) 40 may be provided on the left and right parts of functional part 12 in a case body constituting razor head 11, as long as it can contact the skin surface simultaneously with functional part 12.

[0076] A skin elasticity indicator 43 is provided on the side of the main body case 10, which indicates the level of skin elasticity in three levels: "small," "medium," and "large." The skin elasticity indicator 43 is composed of three LEDs mounted on the control board 17, and these LEDs correspond to "small," "medium," and "large," respectively. The main body case 10 is provided with a light-transmitting window directly facing each LED, and the user can visually check the light-emitting state of each LED through the light-transmitting window. The control unit 25 of the electric shaver 1 controls to light up one of the LEDs in the skin elasticity indicator 43 according to the level of skin elasticity measured by the skin elasticity sensor 40.

[0077] The skin elasticity indicator 43 can also be provided on the razor head 11. In this case, the skin elasticity indicator 43 is composed of, for example, one LED that emits three colors of light, and the LED changes color to "blue," "green," or "red" corresponding to "small," "medium," or "large" skin elasticity to inform the user of the skin elasticity. By providing the skin elasticity indicator 43 on the razor head 11 in this way, the user can easily visually recognize the light-emitting state and check the skin elasticity state. The light-emitting skin elasticity indicator 43 provided on the main body case 10 side may be hidden by the user's hand holding the main body case 10, but this is unlikely when provided on the razor head 11. When the electric shaver 1 is in use, its back surface is mainly reflected in the mirror, so it is preferable to provide the skin elasticity indicator 43 on the back surface (rear surface) of the razor head 11. Alternatively, it is preferable to provide a skin elasticity indicator 43 inside the razor head 11 and irradiate light through a transparent portion (including a semi-transparent portion) of the case body constituting the razor head 11 or through the outer blade 13. With these configurations, the light irradiated by the skin elasticity indicator 43 can be easily seen by the user through a mirror, making it easy to check the state of skin elasticity. Furthermore, the skin elasticity indicator 43 can be configured with a sound generating means such as a buzzer that appeals to the user's sense of hearing, or a vibration means such as a vibrator that appeals to the user's sense of touch, in addition to a light emitting means that appeals to the user's sense of sight. The skin elasticity indicator 43 may be configured with two or more of these means.

[0078] The auxiliary application stored in the smartphone 5 includes a skin elasticity display means for displaying the magnitude of skin elasticity measured by the skin elasticity sensor 40 on the display 52. ​​The skin elasticity display 88 by the skin elasticity display means is composed of three bars arranged in a straight line, and each bar corresponds to "small", "medium", and "large" from the left. When information on the magnitude of skin elasticity is transmitted from the control unit 25 of the electric shaver 1 to the smartphone 5 via the communication interfaces 24 / 64, the skin elasticity display means controls to blink only the bar corresponding to that size among the three bars of the skin elasticity display 88. At this time, the remaining two bars may be either always on or always off. Alternatively, the skin elasticity display 88 may be composed of, for example, three bars that are always on and an arrow pointing to one of the bars.

[0079] In general, skin elasticity differs from part to part of the face. In areas with low skin elasticity, when the functional part 12 of the electric shaver 1 is pressed against the skin, the facial skin is likely to slip into the holes of the outer blade 13, and the part that has slipped in may be rubbed strongly by the inner blade 14 and suffer severe damage, so it is preferable to press the functional part 12 with a relatively weak force. On the other hand, in areas with high skin elasticity, the facial skin is unlikely to slip into the holes of the outer blade 13 even if the functional part 12 is pressed against the skin with a relatively strong force. When the skin elasticity measured by the skin elasticity sensor 40 is displayed on the display 52 as in this embodiment, the user is informed of the skin elasticity of the part directly facing the functional part 12 in real time, and the pressing force of the functional part 12 against the part can be optimized.

[0080] 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 smaller the measured value of the skin elasticity sensor 40, the lower the rotation speed of the motor 16. 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 reduced rotation speed.

[0081] When the rotation speed of the motor 16 is automatically controlled according to the measured value of the skin elasticity sensor 40, the user can know the magnitude of his / her own skin elasticity based on the change in the pitch of the driving sound of the motor 16 in addition to the skin elasticity notification unit 43 and the skin elasticity display 88 described above. In this embodiment, the rotation speed of the motor 16 is lowered in consideration of the fact that the facial skin is more likely to get into the holes of the outer blade 13 when the functional unit 12 is pressed against the part of the skin with less elasticity, so that the damage that the facial skin that gets into the holes of the outer blade 13 receives 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 other parts are the same as those of the interlocking system of the first embodiment, the same members are given the same reference numerals and their description is omitted.

[0082] The interlocking system according to this embodiment can be implemented in the following manner.

[0083] A linking system that links a small electrical device 1 having a functional unit 12 for a human body with a portable display device 5 having a display unit 52, The small electrical device 1 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 device 1 by using the display unit 52, The small electrical device 1 is provided with an operation switch 21 for activating an auxiliary function via a communication interface 24 / 64, The small electrical device 1 is an electric shaver equipped with a skin elasticity measuring means 40 for measuring the skin elasticity of a user, The auxiliary function of the display device 5 is a skin condition display means for displaying the skin elasticity measured by the skin elasticity measuring means 40 on the display unit 52, in this interlocking system.

[0084] The small electric device 1, which is an electric shaver, is equipped with a skin elasticity measuring means 40 that measures the skin elasticity of the user, and the skin elasticity measured by this skin elasticity measuring means 40 is displayed on the display unit 52 of the display device 5. This makes it possible to inform the user of his / her own skin elasticity and encourage the user to press the functional unit 12 of the small electric device 1 with a force appropriate for the skin elasticity. In particular, by encouraging the user not to press the functional unit 12 too hard against a part of the skin with low elasticity, damage to that part from the functional unit 12 can be suppressed.

[0085] Moreover, the electric shaver 1 according to the present embodiment can be embodied in the following forms.

[0086] An electric shaver comprising a skin elasticity measuring means 40 for measuring skin elasticity.

[0087] An electric shaver equipped with a skin elasticity measuring means 40 for measuring skin elasticity can inform the user of his / her own skin elasticity and encourage him / her to press the cutting blades 13 / 14 with a force appropriate to the skin elasticity. In particular, the user is encouraged not to press the cutting blades 13 / 14 too hard on areas of the skin with low elasticity, thereby minimizing damage to those areas caused by the cutting blades 13 / 14.

[0088] The device is provided with an outer blade 13, an inner blade 14 that slides against the outer blade 13, a motor 16 that drives the inner blade 14, and a skin elasticity measuring means 40 that measures skin elasticity. An electric shaver characterized in that the rotation speed of a motor is controlled based on the measurement results of a skin elasticity measuring means.

[0089] With an electric shaver in which the rotation speed of the motor 16 is controlled based on the measurement results of the skin elasticity measuring means 40, the user can know the level of his / her own skin elasticity based on the change in pitch of the driving sound of the motor 16. In this way, by informing the user of his / her own skin elasticity, the user can be encouraged to press the outer blade 13 with a force appropriate to the skin elasticity. In particular, by encouraging the user not to press the outer blade 13 too hard against areas of skin with low elasticity, damage to those areas from the inner blade 14 can be reduced.

[0090] The device is provided with an outer blade 13, an inner blade 14 that slides against the outer blade 13, a motor 16 that drives the inner blade 14, and a skin elasticity measuring means 40 that measures skin elasticity. The rotation speed of the motor 16 is controlled based on the measurement result of the skin elasticity measuring means 40. This electric shaver is characterized in that when the measured value of the skin elasticity measuring means 40 increases, the rotation speed of the motor 16 is automatically controlled to increase, and when the measured value of the skin elasticity measuring means 40 decreases, the rotation speed of the motor 16 is automatically controlled to decrease.

[0091] According to an electric shaver in which the rotational speed of the motor 16 is controlled based on the measurement results of the skin elasticity measuring means 40, the user can know the magnitude of his / her own skin elasticity based on the change in the pitch of the driving sound of the motor 16. In this way, by informing the user of his / her own skin elasticity, the user can be encouraged to press the outer blade 13 with a force appropriate to the skin elasticity. In particular, in a portion of the skin with low elasticity, the facial skin is likely to get caught in the hole of the outer blade 13 when the outer blade 13 is pressed against the facial skin, and the caught portion may be pinched between the outer blade 13 and the inner blade 14 and receive significant damage. As described above, by informing the user of his / her own skin elasticity, the user is encouraged not to press the outer blade 13 too hard against a portion of the skin with low elasticity, and damage to the portion from the outer blade 13 and the inner blade 14 can be suppressed. Furthermore, since the rotational speed of the motor 16 is automatically reduced in a portion of the skin with low elasticity, damage to the facial skin caught in the hole of the outer blade 13 from the inner blade 14 can be reduced.

[0092] The electric shaver includes a main body case 10 that also serves as a grip, and a razor head 11 supported on an upper portion of the main body case 10. The razor head 11 is provided with an outer blade 13, an inner blade 14 that slides against the outer blade 13, and a skin elasticity measuring means 40 that measures skin elasticity. An electric shaver characterized in that a skin elasticity measuring means (40) is provided at a position adjacent to an outer blade (13).

[0093] An electric shaver equipped with a skin elasticity measuring means 40 for measuring skin elasticity can inform the user of his / her own skin elasticity and encourage him / her to press the outer blade 13 with a force appropriate to the skin elasticity. In particular, the user is encouraged not to press the outer blade 13 too hard against areas of low skin elasticity, thereby minimizing damage to those areas from the inner blade 14. Furthermore, if the skin elasticity measuring means 40 is provided adjacent to the outer blade 13, the skin elasticity measuring means 40 will unconsciously come into contact with the skin surface when the user places the outer blade 13 against the skin surface, improving usability for the user.

[0094] (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.

[0095] 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.

[0096] 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 tool 2. Comparing the auxiliary apps of the first embodiment and the third embodiment, the content of the illustration adding means is particularly different. The illustration adding means here adds an auxiliary illustration 70 so that the user's face area shown on the display 52 looks more beautiful as the user's beauty treatment progresses. For example, immediately after the application is launched before the start of the beauty treatment, an unprocessed illustration 71 representing dark spots or freckles is added to the face area, and the unprocessed illustration 71 is gradually lightened as the beauty treatment progresses. Alternatively, immediately after the application is launched, an auxiliary illustration 70 representing a simple accessory is added to the face area, and as the beauty treatment progresses, the auxiliary illustration 70 is changed to a more luxurious accessory.

[0097] The auxiliary application of this embodiment includes the same mirroring means, video still means, lighting control means, zoom control means, and instruction display means as in the first embodiment, but the inversion instruction means is omitted. The device status notification means displays a battery level indicator 75 and a time indicator 79 on the display 52 as the device status of the beauty tool 2. The electrical device control means displays on the display 52 a drive button 82 for turning on and off the supply of pulse current to the skin electrode 32 and the grip electrode 33, a lock button 83 for locking the supply of pulse current regardless of the timer function of the beauty tool 2, and a current stimulation lever (corresponding to the rotation speed lever 81 in the first embodiment) for changing the intensity of the pulse current. Since the rest is the same as in the first embodiment, the same members are given the same reference numerals and their description is omitted.

[0098] As described above, in the interlocking system according to each embodiment, the electric razor 1 or beauty tool 2 is connected to the smartphone 5 via the communication interfaces 24 / 64, and when the user operates the drive switch 21 of the electric razor 1 or beauty tool 2, the auxiliary app on the smartphone 5 is activated in the background. When the auxiliary app is activated, a push notification is displayed on the display 52, and the user can switch the display 52 to the screen of the auxiliary app with a simple operation of simply tapping on this notification. According to the interlocking system according to each embodiment described above, the operation of the smartphone 5 when the user starts using the electric razor 1 or beauty tool 2 in combination with the smartphone 5 can be simplified, thereby improving user convenience.

[0099] The display device 5 may be a smartphone equipped with a general-purpose mobile operating system, or a device equipped with a dedicated operating system specialized for linking with the small electric appliances 1 and 2. In this case, when the user operates the operation switch 21 of the small electric appliance 1 or 2, not only the auxiliary function of the display device 5 is activated, but the operating system can be designed so that the display 52 immediately switches to the screen of the auxiliary function, thereby further improving user convenience. The display 52 of the display device 5 may include a material whose reflectivity increases when a current is passed through it, and in this case, it can be mirrored by simply passing a current through the display 52 without using the camera 53.

[0100] The mirroring means is not essential, and the auxiliary function of the display device 5 may be constituted, for example, by only the device state notification means and the electric device control means. The operation switch 21 for activating the auxiliary function of the display device 5 is not limited to a drive switch for driving the small electric devices 1·2, and may be a dedicated switch provided on the small electric devices 1·2 separately from the drive switch. The communication interfaces 24·64 of the small electric devices 1·2 and the display device 5 may be wired interfaces.

[0101] The interlocking systems according to the above embodiments can be implemented in the following forms.

[0102] A linking system for linking a small electric device 1 / 2 having a functional unit 12 / 32 for a human body with a portable display device 5 having a display unit 52, The small electric devices 1 and 2 and the display device 5 are each provided with a communication interface 24 and 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 and 2 by using the display unit 52, An interlocking system characterized in that small electrical appliances (1, 2) are provided with an operation switch (21) for activating an auxiliary function via a communication interface (24, 64).

[0103] In the above-mentioned interlocking system, the small electric appliances 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 electric appliances 1·2, an auxiliary function that assists the use of the small electric appliances 1·2 is activated on the display device 5. By enabling the auxiliary function of the display device 5 to be activated from the small electric appliances 1·2 in this way, the operation of the display device 5 when the user starts using the small electric appliances 1·2 and the display device 5 in combination can be simplified, improving the user's convenience. That is, in the display device 5 equipped with a dedicated operating system specialized for interlocking with the small electric appliances 1, the display of the auxiliary function can be displayed on the display unit 52 by simply activating the auxiliary function from the small electric appliances 1·2 without operating the display device 5. In addition, in the display device 5 of a mobile communication terminal or the like in which an auxiliary application that realizes the auxiliary function is stored as one of the application programs, the auxiliary application is activated in the background when the operation switch 21 of the small electric appliances 1·2 is operated, so that the display device 5 only needs to perform a simple operation of switching the display unit 52 to the screen of the auxiliary application.

[0104] An interlocking system in which an operation switch for starting an auxiliary function of a display device (5) is a drive switch (21) for driving functional parts (12·32) of small electric devices (1·2).

[0105] If the operating switch for activating the auxiliary function of the display device 5 is a drive switch 21 for driving the functional units 12 and 32 of the small electrical devices 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), thereby improving user convenience.

[0106] An interlocking system in which the communication interfaces 24·64 of the small electrical devices 1·2 and the display device 5 are wireless interfaces compatible with short-range wireless communication.

[0107] If the communication interfaces 24 / 64 of the small electrical devices 1 / 2 and the display device 5 are wireless interfaces compatible with short-range wireless communication, the communication cables that are essential when these are wired interfaces can be omitted, eliminating the inconvenience of the communication cables getting caught on objects and the hassle of carrying around communication cables.

[0108] The auxiliary function of the display device 5 is a linkage system including a mirroring means that enables the display unit 52 to be used as a mirror.

[0109] If the auxiliary function of the display device 5 includes a mirroring means that enables the display unit 52 to be used as a mirror, the display device 5 can be used as a substitute for a hand mirror when the small electric devices 1 / 2 are in use, eliminating the hassle of always carrying a hand mirror together with the small electric devices 1 / 2 when going out.

[0110] A display unit 52 and a camera 53 are arranged on the front surface 51 of the display device 5. The interlocking system is configured such that the mirroring means displays a moving image captured by the camera 53 on the display unit 52 in real time.

[0111] Many display devices 5, such as smartphones, are already equipped with a camera. Therefore, if the mirroring means is configured to display the video captured by the camera 53 on the display unit 52 in real time, the existing hardware of the display device 5 can be used to reduce the overall cost of the linked system.

[0112] An interlocking system in which the display device 5 has a zoom function for the camera 53.

[0113] If the display device 5 has a zoom function for the camera 53, the user can change the range of the face shown on the display unit 52 simply by controlling the zoom function to change the zoom magnification of the camera 53 without having to move the face closer to or farther away from the camera 53, thereby improving user convenience.

[0114] An interlocking system in which the zoom function of a camera 53 is controlled in conjunction with the operation of small electrical devices 1 and 2 by a user.

[0115] When small electric devices 1·2 and display device 5 in place of a hand mirror are used simultaneously, many users hold small electric devices 1·2 in their dominant hand, making it easier to operate small electric devices 1·2 than display device 5. Therefore, if the zoom function of camera 53 is controlled in conjunction with the user's operation of small electric devices 1·2, the user can smoothly change the zoom magnification of camera 53.

[0116] A linkage system in which the zoom function of the camera 53 is controlled in linkage with the movement of the small electric device 1 or 2 by the user.

[0117] When small electric appliances 1 / 2 such as electric shavers or beauty tools are used in a normal manner, they are accompanied by a movement operation such as moving the small electric appliances 1 / 2 along the facial skin. Therefore, if the zoom function of camera 53 is controlled in conjunction with the movement operation of small electric appliances 1 / 2, the zoom magnification is automatically changed without the user having to perform a specific operation for zoom control, thereby eliminating the need for the user to perform a zoom operation.

[0118] An interlocking system in which the zoom function of the camera 53 is controlled depending on which part of the user's face is facing the functional part 12 / 32 of the small electrical device 1 / 2.

[0119] Facial skin treatment using small electric devices 1 / 2 such as electric shavers or beauty tools is not performed uniformly over the entire face, but rather there are areas that are treated relatively roughly and areas that are treated more carefully. Therefore, if the zoom function of camera 53 is controlled according to the part of the user's face that faces functional units 12 / 32 of small electric devices 1 / 2, i.e., the part of the face that the user wishes to treat with functional units 12 / 32, it becomes possible to automatically change the zoom magnification of camera 53 to a value suitable for that part, further improving user convenience.

[0120] A linked system in which the zoom function of the camera 53 is controlled in conjunction with the movement of the display device 5 by the user.

[0121] If the zoom function of camera 53 is controlled in conjunction with the movement of display device 5, the user can change the zoom magnification of camera 53 by the simple operation of simply moving display device 5. When using small electric devices 1 / 2 and display device 5 in place of a hand mirror at the same time, display device 5 is often held in the non-dominant hand, but if only the movement of display device 5 is required, zoom operation can be easily performed even with the non-dominant hand.

[0122] The display device 5 has a face recognition function for detecting a face area from a video captured by the camera 53, A linked system in which the zoom function of the camera 53 is controlled according to the facial expression of the facial area recognized by the face recognition function.

[0123] If the zoom function of camera 53 is controlled according to the facial expression of the facial area recognized by the face recognition function, the user can change the zoom magnification of camera 53 simply by changing the facial expression captured by camera 53. This eliminates the need to operate small electric devices 1 and 2 or display device 5 to change the zoom magnification, improving user convenience.

[0124] The auxiliary function of the display device 5 includes an illustration adding means for adding an auxiliary illustration 70 to the face area displayed on the display unit 52, The auxiliary illustrations include 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 an auxiliary illustration 70 displayed on a display unit 52 in accordance with the progress of processing by functional units 12 and 32.

[0125] Adding auxiliary illustrations 70 such as unprocessed illustrations 71 and processed illustrations 72 to the face area shown on display unit 52 can add a game-like element to the processing by functional unit 12·32, which tends to be monotonous, and the user can enjoy the processing by functional unit 12·32. Also, by urging the user to continue processing by functional unit 12·32 until all unprocessed illustrations 71 have disappeared from the face area on display unit 52 or until processed illustrations 72 have been added to the entire processed portion, partial insufficient processing can be prevented.

[0126] The small electrical device 1 is a hair removal device, Auxiliary illustration 70 includes unprocessed illustration 71 showing exaggerated body hair; The illustration adding means is a linked system that adds an unprocessed illustration 71 to the face area displayed on the display unit 52 before the hair removal process is started by the functional unit 12, and erases the unprocessed illustration 71 in order from the part of the face area that the functional unit 12 has passed over a predetermined number of times.

[0127] The auxiliary illustration 70 includes an unprocessed illustration 71 that represents exaggerated body hair, and before the hair removal process by the functional unit 12 is started, the unprocessed illustration 71 is added to the face area displayed on the display unit 52, and the unprocessed illustration 71 is erased in order from the part of the face area that the functional unit 12 has passed through a predetermined number of times. This allows the user to enjoy the hair removal process, and furthermore, the user is prompted to continue the hair removal process until all the unprocessed illustrations 71 are erased from the face area, thereby preventing partial insufficient hair removal. When all the unprocessed illustrations 71 are erased from the display unit 52, the user can confirm that the hair removal process for the entire face has been completed.

[0128] The small electrical device 2 is a facial beauty device, The auxiliary illustration 70 changes the aesthetic appearance of the face area displayed on the display unit 52, The illustration adding means is a linking system that changes the auxiliary illustration 70 to be added to the facial area so as to make the facial area look more beautiful as the beauty treatment by the functional unit 32 progresses.

[0129] The auxiliary illustration 70 changes the aesthetic beauty of the facial area, and the auxiliary illustration 70 added to the facial area is changed so that the facial area becomes more aesthetically pleasing as the cosmetic treatment by the functional unit 32 progresses. This allows the user to enjoy the cosmetic treatment, and furthermore, the user is prompted to continue the cosmetic treatment until the facial area becomes aesthetically pleasing, preventing partial insufficient treatment.

[0130] The auxiliary function of the display device 5 is a linkage system including a moving image stilling means for stilling the moving image displayed on the display unit 52.

[0131] With the moving image stilling means for stilling the moving image shown on display unit 52, the user can easily check the part of the face he or she wants to check by freezing the moving image while the part is being shown on camera 53 and moving display unit 52 in the still state to a position where it is easy to see, such as in front of the face. In particular, even parts such as the area under the chin, which are difficult to check with a normal hand mirror, can be easily checked.

[0132] A linkage system in which a video stilling means freezes the video displayed on a display unit in response to a stop operation of a functional unit of a small electric device.

[0133] When the video displayed on the display unit 52 is frozen and checked, the processing by the functional unit 12·32 is usually interrupted, and continuing to drive the functional unit 12·32 during the check increases power consumption and is wasteful. If the video is frozen in conjunction with the stop operation of the functional unit 12·32, the functional unit 12·32 is stopped while the video is frozen, and the above-mentioned waste can be prevented. In addition, it is not necessary to perform the operation to freeze the video and the operation to stop the functional unit 12·32 separately, which reduces the user's effort. Furthermore, if the functional unit 12·32 is stopped while the video is frozen, the user can check the still image in a calm state without being bothered by the drive sound of the functional unit 12·32.

[0134] This is an interlocking system in which, when a predetermined time has elapsed since the video stilling means has stopped the video, the display unit 52 of the display device 5 is turned off.

[0135] If the display unit 52 of the display device 5 is set to turn off when a predetermined time has elapsed since the video was frozen, when the user has finished using the small electrical device 1 / 2 and has not turned off the display unit 52, this can prevent the display unit 52 from being wasted by continuing to be lit, thereby reducing the power consumption of the display device 5.

[0136] The small electrical appliance 1 is an electric shaver, A camera 53 is disposed on the upper part of a front surface 51 of the display device 5 in a normal position. 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.

[0137] The inverted position in which camera 53 is located at the bottom of display device 5 makes it easier to capture the lower part of the face where beard grows, particularly the area under the chin, than the normal position in which camera 53 is located at the top of display device 5. Therefore, when display unit 52 is used like a hand mirror when shaving, it is preferable to have display device 5 in the inverted position. By using an inversion instruction means that instructs the user to invert display device 5 upside down, the user is encouraged to turn display device 5 into the inverted position when shaving, allowing the user to comfortably shave the area under the chin, etc.

[0138] The inversion instruction means displays upside-down characters on the display unit 52.

[0139] By displaying upside-down inverted characters on the display unit 52 as an inversion instruction means, the user can intuitively understand that the display device 5 needs to be inverted, and can more reliably adopt the inverted position.

[0140] An interlocking system in which the inversion instruction means displays on the display unit 52 characters or symbols instructing upside-down inversion.

[0141] By displaying characters or symbols instructing upside-down inversion on the display unit 52 as an inversion instruction means, the user is clearly informed that the display device 5 needs to be inverted upside-down, and can more reliably adopt the inverted posture.

[0142] The inversion instruction means inverts the video image displayed on the display unit 52 upside down.

[0143] By inverting the moving image displayed on display unit 52 upside down as an inversion instruction means, the user is more likely to adopt the inverted posture since display unit 52 is useless as a hand mirror in the normal posture.

[0144] The auxiliary function of the display device 5 is an interlocking system including an appliance status notifying means for displaying the appliance statuses of the small electric appliances 1 and 2 on the display unit 52 .

[0145] When the device status of the small electrical appliances 1·2 is displayed on the display unit 52 of the display device 5, the user can easily check the device status of the small electrical appliances 1·2 by visually checking the display unit 52 even while the small electrical appliances 1·2 are in use, when it is difficult to visually check the appliances 1·2.

[0146] The device status displayed on the display unit 52 is an interlocking system including the remaining battery power of the small electrical devices 1 and 2.

[0147] By displaying the remaining battery power of the small electric appliance 1 / 2 on the display unit 52, the user can easily and frequently check the remaining battery power while using the small electric appliance 1 / 2. In particular, when the user is away from home and it is difficult to charge or replace the battery 18 / 38, if the remaining battery power is low, the user can be immediately notified of this and be prompted to finish using the small electric appliance 1 / 2 before the battery power runs out.

[0148] The small electrical appliance 1 is an electric shaver, The device status displayed on the display unit 52 is an interlocking system including the replacement time of the cutting blades 13 and 14 constituting the functional unit 12.

[0149] By displaying the replacement time of the cutting blades 13, 14 on the display unit 52, the user can be reliably informed that the replacement time is approaching, and can be urged to replace the cutting blades 13, 14 early. This can prevent the user from continuing to use the cutting blades 13, 14 whose sharpness has dulled.

[0150] The small electrical appliance 1 is an electric shaver, The device status displayed on the display unit 52 is an interlocking system that includes the time to clean the functional unit 12.

[0151] By displaying the time to clean the functional part 12 on the display unit 52, the user can be reliably informed that the time to clean is approaching, and can be encouraged to clean the functional part 12 early. This makes it possible to maintain the functional part 12 in a hygienic state and suppress the generation of unpleasant odors associated with the oxidation and fermentation of organic matter. In addition, since excessive hair debris and the like that accumulates in the functional part 12 can cause an increased load on the motor 16, early cleaning of the functional part 12 to remove the hair debris and the like can improve the lifespan of the motor 16.

[0152] The small electrical appliance 1 is an electric shaver, The device status displayed on the display unit 52 is an interlocking system including the magnitude of the load acting on the functional unit 12.

[0153] There is a correlation between the strength of the force with which the user presses the functional unit 12 against the skin surface and the magnitude of the load acting on the functional unit 12, and the stronger the pressing force, the greater the load. Therefore, by displaying the magnitude of the load on the functional unit 12 on the display unit 52, the user can be informed of the strength of the pressing force at that time. By checking the magnitude of the load while shaving, the user can always maintain the pressing force of the functional unit 12 at an appropriate strength, thereby reducing the burden on the skin surface.

[0154] The device status displayed on the display unit 52 is an interlocking system including the continuous use time of the small electrical devices 1 and 2.

[0155] Continuous long-term use of the small electric appliances 1 and 2 can lead to inconveniences such as excessive heat generation, etc. Therefore, by displaying the continuous use time of the small electric appliances 1 and 2 on the display unit 52, it is possible to alert the user to avoid continuous long-term use.

[0156] The display device 5 is equipped with a vibrator 59, The device state notification means is an interlocking system that drives a vibrator 59 when the device state of the small electric devices 1 and 2 satisfies a predetermined condition.

[0157] When the device state of the small electric devices 1 and 2 satisfies a predetermined condition, the vibrator 59 is driven, and not only the display unit 52 appeals to the user's visual sense, but also the vibrator 59 appeals to the user's tactile or auditory sense, so that the user can be more reliably informed that the predetermined condition has been satisfied.

[0158] The display device 5 is equipped with a lighting device 56, An interlocking system in which the lighting device 56 turns on when the auxiliary function is activated.

[0159] When the auxiliary function is activated, lighting device 56 of display device 5 can be turned on to clearly inform the user that the auxiliary function has been activated. If camera 53 and lighting device 56 are located on the same side of display device 5, the lighting device 56 can illuminate the subject to be photographed by camera 53 when small electric devices 1 / 2 and display device 5 are used in a dimly lit place. Therefore, regardless of the brightness of the place where small electric devices 1 / 2 and display device 5 are used, clear moving images can be displayed on display unit 52, improving user convenience.

[0160] The auxiliary function of the display device 5 is an interlocking system including an electric appliance control means for controlling the functional parts 12·32 of the small electric appliances 1·2 via the communication interfaces 24·64.

[0161] By making it possible to control the functional units 12·32 of the small electrical devices 1·2 from the display device 5 via the communication interfaces 24·64, the user can control and operate the functional units 12·32 from both the small electrical devices 1·2 and the display device 5, thereby improving user convenience.

[0162] The electric appliance control means is an interlocking system including a locking function for maintaining the functional parts 12 and 32 of the small electric appliances 1 and 2 in an operating state.

[0163] The lock function that keeps the functional units 12·32 of the small electrical appliances 1·2 in a driven state prevents the functional units 12·32 from stopping due to a user's mistaken operation of the small electrical appliances 1·2 or due to the activation of a timer against the user's will, allowing the user to use the small electrical appliances 1·2 more comfortably.

[0164] The electric appliance control means is an interlocking system that controls the outputs of the functional parts 12 and 32 of the small electric appliances 1 and 2 in conjunction with the displacement operation of the display device 5.

[0165] By making it possible to control the output of the functional units 12 / 32 of the small electrical devices 1 / 2 in conjunction with the displacement operation of the display device 5, the user can control the output of the functional units 12 / 32 more quickly than by operating buttons on the display device 5, thereby improving user convenience.

[0166] The small electrical appliance 1 is an electric shaver driven by a motor 16, An interlocking system in which the speed of the motor 16 is controlled by an electrical equipment control means.

[0167] If the rotation speed of motor 16, which is the drive source of electric shaver 1, can be controlled in conjunction with the displacement operation of display device 5, the user can quickly change the rotation speed of motor 16 at will depending on the part of the body that functional unit 12 faces, for example by setting motor 16 to a low speed when shaving under the nose, thereby further improving user convenience.

[0168] The auxiliary function of the display device 5 is an interlocking system including an instruction manual display means for displaying instruction manuals of the small electric devices 1 and 2 on the display unit 52 .

[0169] By using the instruction manual display means for displaying the instruction manual of the small electric device 1 / 2 on the display unit 52, when a user wants to check how to use the small electric device 1 / 2, the user can immediately display and read the instruction manual on the display unit 52. This can improve user convenience by eliminating the need to carry around a booklet of the instruction manual. [Explanation of symbols]

[0170] 1. Small electrical appliances (electric razors) 2. Small electrical appliances (beauty equipment) 5 Display device (smartphone) 12 Functional Parts 13 Cutting blade (outer blade) 14 Cutting blade (inner blade) 16 Motor 21 Operation switch (drive switch) 32 Functional part (skin electrode) 52 Display unit (display) 53 Camera 56 Lighting device (LED) 59 Vibrator 70 Auxiliary Illustrations 71 Unprocessed Illustrations 72 Processed Illustrations

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 auxiliary function of the display device (5) further includes an illustration adding means for adding an auxiliary illustration (70) to the face area displayed on the display unit (52); The auxiliary illustrations include a processed illustration (72) indicating that processing by the functional unit (12 / 32) has been completed, An interlocking system characterized in that an illustration adding means adds an auxiliary illustration (70) to a display unit (52) in accordance with the progress of processing by a functional unit (12, 32).

2. 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 auxiliary function of the display device (5) further includes an illustration adding means for adding an auxiliary illustration (70) to the face area displayed on the display unit (52); The auxiliary illustrations include an unprocessed illustration (71) indicating that processing by the functional unit (12, 32) has not been completed; An interlocking system characterized in that an illustration adding means erases an auxiliary illustration (70) on a display unit (52) according to the progress of processing by a functional unit (12, 32).

3. The small electrical devices (1, 2) are provided with identifiable marks (28) in the video; 3. The interlocking system according to claim 1, wherein the operating portion of the functional portion (12, 32) in the face area is identified by a mark (28) captured by a camera (53).

4. The auxiliary illustration (70) includes a processed illustration (72) indicating that the processing by the functional unit (12 / 32) has been completed, and a processing-in-progress illustration indicating that the processing by the functional unit (12 / 32) is in progress.

2. The interlocking system according to claim 1, wherein the illustration adding means changes the illustration being processed displayed on the display unit (52) to a processed illustration (72) in accordance with the progress of processing by the functional unit (12, 32).

5. The auxiliary illustrations (70) include an unprocessed illustration (71) indicating that the processing by the functional units (12, 32) has not been completed, and an in-process illustration indicating that the processing by the functional units (12, 32) is in progress.

3. The interlocking system according to claim 2, wherein the illustration adding means changes the unprocessed illustration (71) displayed on the display unit (52) to the illustration being processed in accordance with the progress of the processing by the functional unit (12, 32).

6. The auxiliary illustration (70) includes a plurality of types of illustrations in process that differ in stages according to the progress of the processing by the functional unit (12, 32), 6. The interlocking system according to claim 4, wherein the illustration adding means changes the illustration being processed for a part of the face stepwise each time the functional unit (12, 32) passes over that part of the face once.

7. 2. The interlocking system according to claim 1, wherein the illustration adding means adds the auxiliary illustrations (70) to the parts of the face region that the functional unit (12, 32) has passed through a predetermined number of times in sequence.

8. 3. The interlocking system according to claim 2, wherein the illustration adding means erases the auxiliary illustration (70) in order from the part of the face region that the functional unit (12, 32) has passed through a predetermined number of times.

Images