Electric bed system and display method

Abstract

To provide an electric bed system and display method for enabling a user to easily recognize a state of an electric bed.SOLUTION: An electric bed system includes an electric bed and a display device. When the electric bed is changed from a present posture into a target posture, the display device displays an intermediate posture at the present time and the target posture in the electric bed by distinguishably overlapping.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] Embodiments of the present invention relate to an electric bed system and a display method.

Background Art

[0002] An electric bed system in which each part of an electric bed operates by a user's operation has been developed. In such an electric bed system, there is one in which the state of the electric bed is displayed on an operation terminal or the like. However, when the number of movable parts of the electric bed increases or the operation becomes complicated, there is a problem that it becomes difficult for the user to grasp the state of the electric bed.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of embodiments of the present invention is to provide an electric bed system and a display method that enable a user to easily grasp the state of an electric bed.

Means for Solving the Problems

[0005] An electric bed system according to an embodiment of the present invention includes an electric bed and a display device. When changing the electric bed from the current posture to the target posture, the display device displays the current intermediate posture and the target posture of the electric bed so as to be distinguishable and overlapped.

[0006] An electric bed system according to an embodiment of the present invention includes an electric bed and a display device. The display device displays the operation of the electric bed by a figure simulating a mattress.

[0007] The electric bed system according to an embodiment of the present invention includes an electric bed and a display device. The display device displays the angle formed by a reference plane and a part of the electric bed. When the angle is less than or equal to a reference angle, the display device displays a figure representing a corrected angle obtained by multiplying the angle by a first coefficient greater than 1. When the angle is greater than the reference angle, the display device displays a figure representing a corrected angle obtained by adding the value obtained by multiplying the difference between the angle and the reference angle by a second coefficient less than 1 to the value obtained by multiplying the reference angle by the first coefficient.

[0008] The display method according to an embodiment of the present invention, when changing the electric bed from the current posture to the target posture, displays the current intermediate posture and the target posture of the electric bed so as to be distinguishable and superimposed.

[0009] The display method according to an embodiment of the present invention displays the operation of the electric bed by a figure imitating a mattress.

[0010] The display method according to an embodiment of the present invention is a display method for displaying the angle formed by a reference plane and a part of an electric bed. When the angle is less than or equal to a reference angle, the display method displays a figure representing a corrected angle obtained by multiplying the angle by a first coefficient greater than 1. When the angle is greater than the reference angle, the display method displays a figure representing a corrected angle obtained by adding the value obtained by multiplying the difference between the angle and the reference angle by a second coefficient less than 1 to the value obtained by multiplying the reference angle by the first coefficient.

Advantages of the Invention

[0011] According to an embodiment of the present invention, it is possible to realize an electric bed system and a display method that make it easy for a user to grasp the state of the electric bed.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Mode for Carrying Out the Invention

[0013] <First Embodiment> Figures 1(a) to (c) are diagrams showing the electric bed system according to this embodiment. As shown in Figures 1(a) to (c), in the electric bed system 1 according to this embodiment, an electric bed 10 and a display device 20 are provided.

[0014] (Configuration) The electric bed 10 is placed on the floor surface 100. In the electric bed 10, an actuator 11, a frame 12, a back bottom 13, a waist bottom 14, a knee bottom 15, a foot bottom 16, and a mattress 17 are provided. The actuator 11 operates by electric power supplied from the outside. A plurality of actuators 11 may be provided, but in this embodiment, they are collectively referred to as "actuator 11".

[0015] The frame 12 can move up and down by the actuator 11. Also, the angle of the frame 12 with respect to the floor surface 100 can be changed by the actuator 11. The angle of the back bottom 13 with respect to the frame 12 can be changed by the actuator 11. Note that the back bottom 13 is divided into two members, and each angle may be changeable. Thereby, the user's head can be effectively supported. The waist bottom 14 is fixed to the frame 12. The angle of the knee bottom 15 with respect to the frame 12 can be changed by the actuator 11. The foot bottom 16 is rotatably connected to the knee bottom 15, and the angle with respect to the frame 12 changes according to the movement of the knee bottom 15.

[0016] The mattress 17 is disposed on the back bottom 13, the waist bottom 14, the knee bottom 15, and the foot bottom 16 (hereinafter, also collectively referred to as "bottom"). The mattress 17 has flexibility and deforms according to the movement of the bottom.

[0017] Let the distance between the floor surface 100 and the frame 12 be "height h". Let the angle formed by the upper surface of the frame 12 and the lower surface of the back bottom 13 be "head angle α". Let the angle formed by the upper surface of the frame 12 and the lower surface of the knee bottom 15 be "foot angle β". Let the angle formed by the lower surface of the frame 12 and the reference plane 101 be "tilt γ". The reference plane 101 is a virtual plane parallel to the floor surface 100.

[0018] The display device 20 displays the state of the electric bed 10. The display device 20 also serves as an operation terminal of the electric bed 10. The display device 20 may be a dedicated terminal specialized for the electric bed 10, or may be a general-purpose terminal installed with an application corresponding to the electric bed 10. The general-purpose terminal is, for example, a commercially available smartphone or tablet.

[0019] In the electric bed system 1, one electric bed 10 and one display device 20 may be provided. A plurality of display devices 20 may also be compatible with one electric bed 10, or a plurality of display devices 20 may be compatible with a plurality of electric beds 10. However, even when the electric bed system 1 includes a plurality of display devices 20, it is preferable that, at a certain timing, the number of display devices 20 that can operate one electric bed 10 is limited to one. For example, the electric bed 10 and the display device 20 are used in pairing. In addition, a server may be provided in the electric bed system 1. The server can communicate with all the electric beds 10 and all the display devices 20 included in the electric bed system 1, and can store various types of information including user information and the set values of the electric bed 10. The server may be arranged at a location different from the electric bed 10 and the display device 20, or may be configured by a cloud system.

[0020] (Operation) Next, the operation of the electric bed system 1 according to the present embodiment will be described. The operation of the electric bed system 1 according to the present embodiment includes the display method according to the present embodiment.

[0021] As described above, each part of the electric bed 10 operates when the user operates it using the display device 20. In the state shown in FIG. 1(a), the frame 12 is at the lowest position, and each bottom is flat. That is, the height h is the minimum value, and the head angle α, the foot angle β, and the inclination γ are all 0°. In the state shown in FIG. 1(b), the frame 12 moves upward, and the back bottom 13 and the knee bottom 15 are inclined. That is, the height h is a value larger than the minimum value, and the head angle α and the foot angle β are angles larger than 0°. The inclination γ is 0°. In the state shown in FIG. 1(c), the frame 12 is inclined. For this reason, compared with the state shown in FIG. 1(b), the inclination γ is an angle larger than 0°.

[0022] In the electric bed system 1, it is possible to select a position operation and a free operation. First, the position operation will be described. Figs. 2(a) to (c) are screen diagrams showing the position operation of the present embodiment. Fig. 3 is a table showing the set values of the head angle α, the foot angle β, and the inclination γ at each position. Fig. 4 is a diagram showing the emphasizing operation in the low angle range. Fig. 5 is a graph showing the emphasizing operation in the low angle range, with the actual angle on the horizontal axis and the correction angle on the vertical axis. Figs. 6(a) to (c) are bar graphs showing the remaining time.

[0023] In the position operation, a plurality of positions are set. For each position, the head angle α, the foot angle β, and the inclination γ are set respectively and stored in the electric bed system 1. In addition to the head angle α, the foot angle β, and the inclination γ, the height h may be set. The initial set values and the changed set values of the head angle α, the foot angle β, the inclination γ, and the height h may be stored in the server in association with the user's information. Since the configurable parameters depend on the configuration of the electric bed 10, if the configuration of the electric bed 10 becomes complex and the number of movable parts increases, the types of configurable parameters may also increase.

[0024] Then, when the user selects an arbitrary position, the actuator 11 operates to move the frame 12 and each bottom so that the head angle α, the foot angle β, and the inclination γ become the set values. Thereby, a predetermined state is realized in the electric bed 10.

[0025] Specifically, as shown in Fig. 2(a), when the user selects a position operation, the display device 20 displays the screen S1. On the screen S1, as a figure representing the current posture of the electric bed 10, a figure D1 imitating a mattress is displayed. Also, on the screen S1, a character string C1 representing the current posture is displayed. The character string C1 includes character strings such as "Head 0°" indicating that the head angle α is 0°, "Foot 15°" indicating that the foot angle β is 15°, and "Inclination 0°" indicating that the inclination γ is 0°. The figure D1 and the character string C1 are displayed in the same color, for example, blue. By visually recognizing the screen S1, the user can confirm the current posture of the electric bed 10.

[0026] Also, on the screen S1, an operation screen A1 allowing the user to select one from a plurality of positions is included. The operation screen is a screen that accepts operations such as taps or slides by the user and inputs corresponding commands. The operation screen A1 includes character strings and figures indicating a plurality of positions, for example, 10 types of positions: "Falling asleep", "Inclined", "Relaxed", "Reading / TV", "Breathing", "Foot relaxation", "Waist relaxation", "Meal", "Flat", and "Custom". The set values of the head angle α, the foot angle β, and the inclination γ in each position are shown in Fig. 3. For "Custom", the user sets their preferred angle.

[0027] Suppose the user operates the operation screen A1 on the screen S1 and selects the "Reading / TV" position. As a result, as shown in Fig. 2(b), the display device 20 displays the screen S2. On the screen S2, the figure D1 representing the current posture of the electric bed 10 is displayed in blue. Also, a figure D2 representing the final posture, that is, the posture of the "Reading / TV" position, is displayed. The figure D2 is displayed superimposed on the figure D1 and is a distinguishable figure from the figure D1. The figure D2 includes, for example, a figure imitating the contour of the mattress and a line segment representing the inclination of the frame 12.

[0028] Further, on the screen S2, as strings representing the posture of the "Reading / TV" position, strings C2 such as "Head 45°", "Feet 30°", and "Inclination 10°" are also included. The graphic D2 and the string C2 indicating the target posture of the "Reading / TV" position are of the same color and are displayed in a color different from that of the graphic D1 representing the current posture. In one example, when the background of the screen S2 is dark navy and the graphic D1 is displayed in blue, the graphic D2 and the string C2 are displayed in white. Thus, the user can confirm the final target posture by visually recognizing the graphic D2 and the string C2. The screen S2 also includes the string "START" to start the operation toward the "Reading / TV" position.

[0029] Suppose the user taps the string "START" on the screen S2. Thereby, the actuator 11 of the electric bed 10 operates to tilt the frame 12, the back bottom 13, and the knee bottom 15. It takes time until this operation is completed. During that time, the display device 20 displays the screen S3 shown in FIG. 2(c).

[0030] On the screen S3, the graphic D1 representing the current intermediate posture, and the graphic D2 and the string C2 indicating the final target posture are superimposed and displayed. The string representing the intermediate posture is not displayed. As described above, the graphic D1 is a graphic imitating a mattress and is displayed in blue in one example. The graphic D2 is a graphic imitating the outline of the mattress, and the graphic D2 and the string C2 are displayed in white in one example. Therefore, even when the graphic D1 and the graphic D2 are superimposed and displayed, the user can distinguish between the two. Also, since the string C2 is displayed in the same color as the graphic D2, the user can recognize that the string C2 and the graphic D2 represent the same information. Note that the background color of the screen is not limited to dark navy, the color of the graphic D1 is not limited to blue, and the colors of the graphic D2 and the string C2 are not limited to white, and they can be any colors. These color combinations may be made different between the position operation and the free operation, or may be selectable by the user.

[0031] As the frames 12, back bottom 13, and knee bottom 15 move, the figure D1 changes continuously. At this time, the display device 20 highlights and displays the part corresponding to the operating part of the electric bed 10 in the figure D1 (hereinafter referred to as the "operating part"). For example, the operating part in the figure D1 is made to blink. Note that the method of highlighting the operating part is not limited to blinking. For example, the operating part may be displayed in a third color different from both the figure D1 and the figure D2. Also, the screen S3 includes the character string "STOP" for stopping the operation.

[0032] When the electric bed 10 reaches its final position or the user taps the character string "STOP", the actuator 11 stops. At this time, the display device 20 may display the figure D1 representing the current posture and the character string C1.

[0033] As shown in FIGS. 4 and 5, in the figures D1 and D2, the head angle α, the foot angle β, and the inclination γ are highlighted and displayed in the low angle range. Specifically, a reference angle is set. When the true values of the head angle α, the foot angle β, and the inclination γ (hereinafter collectively referred to as "actual angles") are less than or equal to the reference angle, a corrected angle obtained by multiplying the actual angle by a first coefficient greater than 1 is calculated, and the figures D1 and D2 are determined based on this corrected angle. On the other hand, when the actual angle is greater than the reference angle, a corrected angle is calculated by adding the value obtained by multiplying the difference between the actual angle and the reference angle by a second coefficient less than 1 to the value obtained by multiplying the reference angle by the first coefficient, and the figures D1 and D2 are determined based on this corrected angle.

[0034] When the actual angle is θ, the reference angle is θ0, the first coefficient is k1, the second coefficient is k2, and the corrected angle is θ1, the corrected angle θ1 can be expressed by the following mathematical formulas (1) and (2).

[0035] θ1 = k1×θ (θ ≤ θ0) (1) θ1 = k2×(θ - θ0) + k1×θ0 (θ0 < θ) (2)

[0036] In one example, the reference angle θ0 is 30°, the first coefficient k1 is 1.5, and the second coefficient k2 is 0.5. In this case, as shown in FIGS. 4 and 5, when the actual angle θ is 0°, the correction angle θ1 is also 0°; when the actual angle θ is 30°, the correction angle θ1 is 45°; when the actual angle θ is 60°, the correction angle θ1 is also 60°; and when the actual angle θ is 75°, the correction angle θ1 is 67.5°. As a result, the inclination is emphasized and displayed in the low angle range below the reference angle, making it easier for the user to intuitively grasp the inclination of each part. On the other hand, the character strings C1 and C2 display the values of the actual angles. This can provide accurate information to the user.

[0037] Note that the values of the reference angle θ0, the first coefficient k1, and the second coefficient k2 are not limited to the above example, but the correction angle is set so as not to exceed 90°. This is because if the correction angle exceeds 90°, the upper body of the graphics D1 and D2 will lean forward, misleading the user.

[0038] Furthermore, as shown in FIGS. 6(a) to 6(c), on the screen S3, a bar graph G1 representing the remaining time may be displayed. This allows the user to intuitively grasp the time until they transition to the final posture and gain a sense of security.

[0039] Next, the free operation will be described. FIGS. 7(a) and 7(b) are screen diagrams showing the free operation of this embodiment. In the free operation, the user can individually move each movable part of the electric bed 10.

[0040] As shown in FIG. 7(a), when the user operates the display device 20 to select the free operation, the display device 20 displays the screen S4. On the screen S4, the graphics D1 and the character string C1 representing the current posture and the operation screen A2 are displayed. On the operation screen A2, the character string C3 indicating the item to be moved and a pair of arrows B1 indicating the moving direction are displayed. The character string C3 is, for example, "interlock", "head", "foot", and "tilt".

[0041] For example, "interlocking" is selected when it is desired to move the back bottom 13 and the knee bottom 15 in an interlocked manner. Note that "interlocking" is not limited to the interlocking of the back bottom 13 and the knee bottom 15, and may be interlocked with "tilt" and "height", etc. Also, when the back bottom 13 is divided into two members, these two members may move independently. "Head" is selected when it is desired to move only the back bottom 13. "Foot" is selected when it is desired to move the knee bottom 15. Note that, as described above, when the knee bottom 15 is moved, the foot bottom 16 also moves in an interlocked manner. "Tilt" is selected when it is desired to tilt the frame 12. Arrow B1 includes the arrow "↑" selected when it is desired to move upward and the arrow "↓" selected when it is desired to move downward.

[0042] As shown in FIG. 7(b), assume that the user selects "head" and "↑" on the operation screen A2. In this case, the display device 20 displays the screen S5. On the screen S5, a graphic D3 representing the intermediate posture at the current time and a character string C4 are displayed. In the graphic D3, the moving part is displayed so as to be distinguishable from the non-moving part. For example, the non-moving part of the graphic D3, for example, the lower body, is displayed in blue, and the moving part, for example, the upper body, is displayed in blinking blue or light blue. The character string C4 is displayed in a color different from the character string C1 displayed on the screen S4, for example, white.

[0043] Also, on the screen S5, the operation screen A2 continues to be displayed. On the operation screen A2, the selected character string C3 and the color of the selected arrow B1 are displayed in a color different from that before selection. Thereby, the user can recognize that their selection has been accepted. The electric bed 10 operates the actuator 11 only while the user is touching the arrow B1, and stops the actuator 11 when the user removes their finger from the arrow B1.

[0044] (Effect) In this embodiment, when a position operation is selected, the display device 20 superimposes and displays the current intermediate posture and the ultimately reachable target posture of the electric bed 10 on the screen S2 and the screen S3 in a distinguishable manner. As a result, the user can intuitively understand the difference between the intermediate posture and the target posture. Consequently, according to this embodiment, an electric bed system and a display method that enable the user to easily grasp the state of the electric bed can be realized.

[0045] Also, on the screens S2 and S3, the current intermediate posture is displayed by a figure D1 imitating a mattress, and the final target posture is displayed by a figure D2 imitating the outline of the mattress. This makes it easier for the user to distinguish between the figure D1 and the figure D2 even when they are superimposed and displayed.

[0046] In the above example, as the display form of the target posture of the mattress to be ultimately reached, it is displayed by a figure D2 imitating the outline of the mattress in a diagram. However, it is not limited to this. The final posture may be displayed by a figure D2 of a color different from that of the intermediate posture figure D1, or the target posture may be displayed by a semi-transparent figure D2 with a transmittance different from that of the figure D1. Also, as long as the user can distinguish between the figure D1 and the figure D2, other display forms may be selected.

[0047] Furthermore, in this embodiment, the figure D1 and the character string C1 representing the current intermediate posture are displayed in a first color, and the figure D2 and the character string C2 representing the final target posture are displayed in a second color different from the first color. This makes it easier for the user to distinguish between the intermediate posture and the final posture.

[0048] Moreover, in this embodiment, the portion corresponding to the operating part of the electric bed in the figure is emphasized and displayed. For example, the operating part is made to blink or is displayed in a third color. This makes it easier for the user to grasp the moving part.

[0049] In addition, by using a figure that imitates the mattress or its contour instead of the bottom to show the posture of the electric bed 10, it becomes easier for the user to understand the posture. In the electric bed 10, the actively moving part is the bottom, and the mattress only deforms passively. However, since the bottom is arranged under the mattress, it is usually not visible to the user. Therefore, if a figure imitating the bottom is used, it is difficult for the user to intuitively understand the posture. On the contrary, if a figure imitating the mattress that the user usually sees is used, it becomes easier for the user to intuitively understand.

[0050] Furthermore, in the present embodiment, as shown in FIGS. 4 and 5, the actual angle is converted into a correction angle, and the figure is deformed based on the correction angle. Thereby, when the actual angle is in the low angle range, the angle can be emphasized and displayed. As a result, it becomes easier for the user to grasp the angle in the low angle range.

[0051] Note that the set value of each position in the position operation may be changeable by the user using the display device 20. In this case, the display device 20 displays a setting screen. Also in this setting screen, the above-described figure using the mattress and the emphasized display in the low angle range can be applied.

[0052] <Second Embodiment> FIGS. 8(a) to 8(d) are screen diagrams showing the display method according to the present embodiment. As shown in FIGS. 8(a) to 8(d), in the present embodiment, when the user selects a free operation, the display device 20 displays a screen S6. On the screen S6, a figure D4 representing the current posture, a character string C5, and a bar graph G2 are displayed.

[0053] Figure 8(a) shows an example of changing the head angle α. In the figure D4, the moving part is emphasized and displayed. For example, the upper body is made to blink or displayed in a third color. The character string C5 displays only the changing parameter. For example, only the head angle α is displayed as "Head 60°". Unchanging parameters, such as the foot angle β and the inclination γ, are not displayed. The bar graph G2 represents the height h of the frame 12.

[0054] Figure 8(b) shows an example of changing the foot angle β. In this case, the lower body is emphasized and displayed in the figure D4. Also, the character string C5 displays only the foot angle β as "Foot 30°". The head angle α and the inclination γ are not displayed.

[0055] Figure 8(c) shows an example of changing the inclination γ. In this case, in the figure D4, the line segment representing the reference plane 101 is made thick and the color is also changed for display. Also, the character string C5 displays only the inclination γ as "Inclination 10°". The head angle α and the foot angle β are not displayed.

[0056] Figure 8(d) shows an example of changing the height h. In this case, in the figure D4, the bar graph G2 representing the height is emphasized and displayed. Also, the character string C5 displays only the height h as "Height 35 cm". The head angle α, the foot angle β, and the inclination γ are not displayed.

[0057] According to this embodiment, the figure D4 is configured by combining only the deformed parts. In this way, by omitting the non-deformed parts, the deformed parts are more emphasized. Also, as the character string C5, only the changing parameters are displayed. Furthermore, the height h is displayed by the bar graph G2. As a result, it becomes easier for the user to intuitively grasp the posture of the electric bed 10. The configurations, operations, and effects other than those described above in this embodiment are the same as those in the first embodiment.

[0058] Each of the foregoing embodiments is an example embodying the present invention, and the present invention is not limited to these embodiments. For example, in each of the foregoing embodiments, those obtained by adding, deleting, or changing some components or steps are also included in the present invention.

[0059] The present invention includes the following aspects.

[0060] (Appendix 1) An electric bed, A display device that, when changing the electric bed from the current posture to the target posture, displays the current intermediate posture and the target posture of the electric bed in an overlapping manner so that they can be distinguished, An electric bed system comprising the same.

[0061] (Appendix 2) The electric bed system according to Appendix 1, wherein the display device displays the intermediate posture by a first figure imitating a mattress and the target posture by a second figure imitating the outline of the mattress.

[0062] (Appendix 3) The display device also displays a first character string representing the intermediate posture and a second character string representing the target posture, The electric bed system according to Appendix 2, wherein the first figure and the first character string are displayed in a first color, and the second figure and the second character string are displayed in a second color.

[0063] (Appendix 4) The electric bed system according to Appendix 2 or 3, wherein the display device highlights and displays a portion corresponding to the operating portion of the electric bed in the first figure.

[0064] (Appendix 5) The electric bed system according to any one of Appendices 1 to 4, wherein the display device displays the height of the electric bed by a bar graph.

[0065] (Appendix 6) The display device is the electric bed system according to any one of Appendices 1 to 5 that displays the remaining time until reaching the target posture by a bar graph.

[0066] (Appendix 7) An electric bed, A display device that displays the operation of the electric bed by a figure imitating a mattress, An electric bed system comprising the same.

[0067] (Appendix 8) The electric bed system according to Appendix 7, wherein the figure is a figure formed by combining only the deformed parts.

[0068] (Appendix 9) When the angle formed by the reference plane and a part of the electric bed is less than or equal to the reference angle, the display device displays a figure representing a corrected angle obtained by multiplying the angle by a first coefficient greater than 1, and when the angle is greater than the reference angle, the display device displays a figure representing a corrected angle obtained by adding the value obtained by multiplying the difference between the angle and the reference angle by a second coefficient less than 1 to the value obtained by multiplying the reference angle by the first coefficient. The electric bed system according to any one of Appendices 1 to 8.

[0069] (Appendix 10) An electric bed, A display device that displays the angle formed by the reference plane and a part of the electric bed, Comprising the same, When the angle is less than or equal to the reference angle, the display device displays a figure representing a corrected angle obtained by multiplying the angle by a first coefficient greater than 1, and when the angle is greater than the reference angle, the display device displays a figure representing a corrected angle obtained by adding the value obtained by multiplying the difference between the angle and the reference angle by a second coefficient less than 1 to the value obtained by multiplying the reference angle by the first coefficient. An electric bed system.

[0070] (Appendix 11) A display method for distinguishably overlapping and displaying the current intermediate posture and the target posture of the electric bed when changing the electric bed from the current posture to the target posture.

[0071] (Appendix 12) A display method for displaying the operation of an electric bed by a figure imitating a mattress.

[0072] (Appendix 13) A display method for displaying the angle formed by a reference plane and a part of an electric bed, when the angle is less than or equal to a reference angle, displaying a figure representing a corrected angle obtained by multiplying the angle by a first coefficient greater than 1, and when the angle is greater than the reference angle, displaying a figure representing a corrected angle obtained by adding a value obtained by multiplying the difference between the angle and the reference angle by a second coefficient less than 1 to a value obtained by multiplying the reference angle by the first coefficient.

Explanation of Signs

[0073] 1 Electric bed system 10 Electric bed 11 Actuator 12 Frame 13 Back bottom 14 Waist bottom 15 Knee bottom 16 Foot bottom 17 Mattress 20 Display device 100 Floor surface 101 Reference plane A1, A2 Operation screen B1 Arrow C1, C2, C3, C4, C5 Character string D1, D2, D3, D4 Figure G1, G2 Bar graph h Height S1, S2, S3, S4, S5, S6 Screen α Head angle β Foot angle γ Inclination θ Actual angle θ0 Reference angle θ1 Corrected angle

Claims

1. An electric bed, a display device that, when changing the electric bed from the current posture to the target posture, superimposes and displays the current intermediate posture and the target posture of the electric bed so as to be distinguishable, An electric bed system comprising the same.

2. The electric bed system according to claim 1, wherein the display device displays the intermediate posture by a first figure imitating a mattress, and displays the target posture by a second figure imitating the contour of the mattress.

3. The display device also displays a first character string representing the intermediate posture and a second character string representing the target posture, The electric bed system according to claim 2, wherein the first figure and the first character string are displayed in a first color, and the second figure and the second character string are displayed in a second color.

4. The electric bed system according to claim 2, wherein the display device highlights and displays a portion corresponding to an operating portion of the electric bed in the first figure.

5. The electric bed system according to claim 1, wherein the display device displays the height of the electric bed by a bar graph.

6. The electric bed system according to claim 1, wherein the display device displays the remaining time until reaching the target posture by a bar graph.

7. An electric bed, a display device that displays the operation of the electric bed by a figure imitating a mattress, An electric bed system comprising the same.

8. The electric bed system according to claim 7, wherein the figure is a figure formed by combining only the deformed portions.

9. When the angle formed by the reference plane and a part of the electric bed is less than or equal to the reference angle, the display device displays a figure representing a corrected angle obtained by multiplying the angle by a first coefficient greater than 1. When the angle is greater than the reference angle, the display device displays a figure representing a corrected angle obtained by adding a value obtained by multiplying the difference between the angle and the reference angle by a second coefficient less than 1 to a value obtained by multiplying the reference angle by the first coefficient. The electric bed system according to any one of claims 1 to 8.

10. An electric bed, a display device that displays an angle formed by a reference plane and a part of the electric bed, Comprising The display device displays a figure representing a corrected angle obtained by multiplying the angle by a first coefficient greater than 1 when the angle is less than or equal to a reference angle, and displays a figure representing a corrected angle obtained by adding a value obtained by multiplying the difference between the angle and the reference angle by a second coefficient less than 1 to a value obtained by multiplying the reference angle by the first coefficient when the angle is greater than the reference angle. An electric bed system.

11. A display method for distinguishably superimposing and displaying the current intermediate posture and the target posture of the electric bed when changing the electric bed from the current posture to the target posture.

12. A display method for displaying the operation of the electric bed by a figure simulating a mattress.

13. A display method for displaying an angle formed by a reference plane and a part of the electric bed, when the angle is less than or equal to a reference angle, a figure representing a corrected angle obtained by multiplying the angle by a first coefficient greater than 1 is displayed, and when the angle is greater than the reference angle, a value obtained by multiplying the difference between the angle and the reference angle by a second coefficient less than 1 is added to a value obtained by multiplying the reference angle by the first coefficient. A display method for displaying a figure representing the corrected angle.

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