Front pad and head-mounted display

Abstract

Provided are: a front pad (100) for stabilizing the mounting state of a head-mounted display (1); and a head-mounted display including the front pad (100). The front pad (100) includes an upper surface (122a) and an inclined contact surface (1101) that extends obliquely frontward and downward from the rear end (E) of the upper surface (122a) and is brought into contact with the forehead of a user.

Description

Front pad, head mounted display

[0001] The present disclosure relates to a front pad and a head-mounted display.

[0002] Patent Document 1 discloses a head-mounted display provided with a pad including a cushioning material that is provided so as to come into contact with the user's head.

[0003] Japanese Patent Application Laid-Open No. 2016-147071

[0004] Here, it is preferable that the head mounted display is stably attached to the user's head without slipping off the user's head.

[0005] One object of the present disclosure is to provide a front pad that stabilizes the wearing state of a head-mounted display, and a head-mounted display having the front pad.

[0006] An example of a front pad for a head-mounted display proposed in the present disclosure includes an upper surface and an inclined contact surface that extends diagonally downward and forward from the rear end of the upper surface and that comes into contact with the user's forehead.

[0007] An example of a head-mounted display proposed in the present disclosure has the above-mentioned front pad, a main body that houses the display, and a wearing band that extends rearward from the main body, and the front pad is attached to the front of the wearing band.

[0008] 1 is a perspective view of an HMD according to this embodiment as seen from the right rear. FIG. 2 is a left side view showing a state in which an HMD according to this embodiment is in use. FIG. 3 is a view of a front pad according to this embodiment as seen from the front. FIG. 4 is a view of a front pad according to this embodiment as seen from the left. FIG. 5 is a cross-sectional view showing a cut surface taken along the V-V cutting line shown in FIG. 3. FIG. 6 is a view of a vertical rib of a front pad according to this embodiment. FIG. 7 is a cross-sectional view showing a cut surface taken along the VII-VII cutting line shown in FIG. 3. FIG. 8 is a view of a rear pad according to this embodiment as seen from the rear. FIG. 9 is a view of a rear pad according to this embodiment as seen from the left. FIG. 10 is a cross-sectional view showing a cut surface taken along the X1-X1 cutting line shown in FIG. 8. FIG. 11 is a view of a vertical rib of a rear pad according to this embodiment.

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention (hereinafter referred to as the present embodiment) will be described below with reference to the drawings. In the following description, a head mounted display 1 will be referred to as an "HMD (Head Mounted Display) 1".

[0010] In the following description, the directions indicated by Y1 and Y2 in the drawings are respectively forward and backward, the directions indicated by Z1 and Z2 in the drawings are respectively upward and downward, and the directions indicated by X1 and X2 in the drawings are respectively right and left. These directions indicate the directions as seen by a user wearing the HMD 1. However, the up-down direction, front-back direction, and left-right direction do not indicate strict directions. For example, the description that "the wearing band 20 extends rearward from the main body 10" does not mean that the wearing band 20 extends in a direction perpendicular to the up-down direction and front-back direction, but also means that the wearing band 20 extends at an angle to the direction indicated by the arrow Y2.

[0011] [Overview of the Overall Configuration of the HMD 1] Fig. 1 is a perspective view of the HMD according to this embodiment as seen from the right rear. Fig. 2 is a left side view showing the HMD according to this embodiment in use. In the following description, the state in which the HMD 1 is worn by a user is referred to as the "use state." As shown in Figs. 1 and 2, the HMD 1 has a main body 10, a wearing band 20, a light-shielding member 30, a front pad 100, and a rear pad 200.

[0012] The main body 10 has a display 11, a lens 12, and a housing 13 that houses the display 11 and the lens 12. In one example of the HMD 1, the display 11 displays three-dimensional images. However, this is not limited thereto, and the images displayed by the display 11 may be two-dimensional images. The display 11 may be, for example, a liquid crystal display or an organic electroluminescence display device, but the type is not particularly limited. As shown in FIG. 2 , when the HMD 1 is in use, the main body 10 covers the area in front of the user's eyes.

[0013] In this embodiment, an example in which the display 11 is built into the housing 13 will be described, but the present invention is not limited to this. For example, a portable terminal may be housed in the main body 10, and image light from the display of the housed portable terminal may be guided to the user's eyes. In this case, for example, a smartphone may be used as the portable terminal. Furthermore, the HMD 1 is not limited to a non-transmissive type, and may also be a transmissive type head-mounted display.

[0014] The wearing band 20 extends rearward from the main body 10. When the HMD 1 is in use, the wearing band 20 surrounds the user's head H. The wearing band 20 is annular, and the user's head H is preferably placed inside the wearing band 20. The wearing band 20 includes a support portion 22 that supports the main body 10 and constitutes the front portion of the wearing band 20, a right extension portion 24 that extends rearward from the support portion 22 and constitutes the right side of the wearing band 20, a left extension portion 26 that extends rearward from the support portion 22 and constitutes the left side of the wearing band 20, and a rear case 28 that houses the rear portions of the right extension portion 24 and the left extension portion 26.

[0015] The wearing band 20 may have a function for adjusting its length to fit the size of the user's head H. For example, the overall length of the wearing band 20 may be adjusted by adjusting the lengths of the right extension portion 24 and the left extension portion 26 housed in the rear case 28. However, the wearing band 20 is not limited to the configuration shown in FIGS. 1 and 2 as long as it is worn on the user's head H and supports the main body 10. For example, the wearing band 20 may not have the support portion 22, and the right extension portion 24 and the left extension portion 26 may extend from the housing 13 of the main body 10. Furthermore, although the wearing band 20 extends diagonally rearward and downward in the example of the HMD 1, it may also extend horizontally rearward.

[0016] The light-blocking member 30 is attached to the housing 13 of the main body 10 and is provided to block or reduce external light incident on the eyes of a user wearing the HMD 1. The light-blocking member 30 is preferably made of elastic resin.

[0017] [Front Pad 100] The front pad 100 of this embodiment will be described in detail with reference to Figures 1 to 7. Figure 3 is a view of the front pad of this embodiment as seen from the front. Figure 4 is a view of the front pad of this embodiment as seen from the left. Figure 5 is a cross-sectional view showing a cut surface taken along the V-V cutting line shown in Figure 3. Figure 6 is a view showing vertical ribs of the front pad of this embodiment. Figure 7 is a cross-sectional view showing a cut surface taken along the VII-VII cutting line shown in Figure 3. Note that Figures 3 to 5 show the front pad 100 removed from the pad support frame 40, which will be described later.

[0018] The front pad 100 is an elastic member that comes into contact with the user's forehead (the front of the head H) when the HMD 1 is in use. The provision of the front pad 100 can reduce the tightness felt by the user when wearing the wearing band 20. This improves wearability and allows the user to use the HMD 1 comfortably.

[0019] The front pad 100 is preferably attached to a pad support frame 40. The pad support frame 40 is preferably attached to the back surface (rear surface) of the support portion 22 of the mounting band 20. The pad support frame 40 is preferably attached so as to be freely detachable from the support portion 22, and is preferably formed as a unit with the front pad 100. However, this is not limited thereto, and the pad support frame 40 may be fixed to the support portion 22. The pad support frame 40 and the support portion 22 may also be integrated. In other words, the pad support frame 40 may be part of the mounting band 20.

[0020] The front pad 100 includes an elastic surface portion 110, a protruding edge portion 120, and an elastic rib 130. The elastic surface portion 110, the protruding edge portion 120, and the elastic rib 130 are integrally formed and may be made of synthetic rubber, such as silicone rubber.

[0021] [Front Pad 100: Elastic Surface Portion 110] The elastic surface portion 110 is the portion that comes into contact with the user's forehead during use. The elastic surface portion 110 is preferably curved to fit the user's forehead. That is, as shown in Figures 1 and 5, the elastic surface portion 110 is preferably curved so as to extend rearward from the center toward the end in the left-right direction.

[0022] 3, the vertical width of the elastic surface portion 110 may be configured to decrease toward the left and right ends. The center of the elastic surface portion 110 in the horizontal direction may have a larger vertical width than the right and left extending portions 24 and 26, while the right and left ends of the elastic surface portion 110 may have a vertical width equal to or smaller than the width of the right and left extending portions 24 and 26. By adopting such a configuration, the portion of the elastic surface portion 110 that comes into contact with the user's forehead can be made larger, and the right and left ends of the elastic surface portion 110 can be prevented from being visible from the outside. This improves wearability and prevents loss of design.

[0023] 3 and 4, the protruding edge portion 120 is a portion that protrudes forward from the edge of the elastic surface portion 110. In the example shown, the annular protruding edge portion 120 includes an upper edge portion 120a that protrudes from the upper portion of the elastic surface portion 110 and a lower edge portion 120b that protrudes from the lower portion of the elastic surface portion 110.

[0024] The upper edge 120a and the lower edge 120b may each be provided with a plurality of mounting portions 121. The mounting portions 121 are attached to the pad support frame 40, thereby supporting the front pad 100 on the pad support frame 40. Note that in Figures 3 and 4, to avoid cluttering the drawings, only some of the mounting portions 121 are labeled with reference numerals. The mounting structure of the front pad 100 to the pad support frame 40 is not limited to the example shown in the figure, and the front pad 100 may be attached by adhesive or the like, or fixed by welding or the like.

[0025] The protruding edge 120 forms a deformation space P1 together with the elastic surface portion 110. The elastic surface portion 110 elastically deforms and recesses forward when it comes into contact with the user's forehead. The deformation space P1 is an area that allows deformation of the elastic surface portion 110 when it comes into contact with the user's forehead. The deformation space P1 is formed between the pad support frame 40 and the elastic surface portion 110, and is preferably a hollow space in which no other components are disposed except for the front pad 100.

[0026] [Front Pad 100: Elastic Rib 130] If the elastic surface portion 110 is thin, it will be difficult to maintain its shape. Therefore, in this embodiment, a configuration is adopted in which an elastic rib 130 is provided to generate a reaction force against deformation of the elastic surface portion 110. The elastic rib 130 is formed on the surface (front surface) of the elastic surface portion 110 opposite the surface that comes into contact with the user's forehead, within the deformation-allowing space P1.

[0027] In this embodiment, the elastic rib 130 includes a plurality of vertical ribs 131 which are first elastic ribs, and a plurality of horizontal ribs 132 which are second elastic ribs.

[0028] [Front Pad 100: Vertical Ribs 131] The vertical ribs 131 protrude from the surface (front surface) of the elastic surface portion 110 opposite to the side that comes into contact with the user's head, and extend from the upper edge 120a to the lower edge 120b of the protruding edge portion 120. The vertical ribs 131 are arranged side by side at predetermined intervals in the left-right direction.

[0029] When the user's forehead comes into contact with the elastic surface portion 110, the elastic surface portion 110 elastically deforms to expand its surface area. At this time, the multiple vertical ribs 131 formed from the upper edge portion 120a to the lower edge portion 120b are stretched, generating a reaction force against the deformation of the elastic surface portion 110. This allows the shape of the elastic surface portion 110 to be maintained. Furthermore, the reaction force against the deformation of the elastic surface portion 110 improves the elasticity of the front pad 100. As a result, the wearability of the HMD 1 improves.

[0030] Here, the front pad 100 preferably has a portion that is easy to maintain its shape and a portion that is easy to deform, depending on the portion that comes into contact with the user's head H. The peripheral portion of the elastic surface portion 110 preferably maintains its shape easily, and the central portion of the elastic surface portion 110 preferably deforms easily. Specifically, the upper and lower portions of the elastic surface portion 110 in the vertical direction preferably maintain their shape easily, and the central portion of the elastic surface portion 110 in the vertical direction preferably deforms easily. Furthermore, the right and left portions of the elastic surface portion 110 in the horizontal direction preferably maintain their shape easily, and the central portion of the elastic surface portion 110 in the horizontal direction preferably deforms easily. This configuration improves fit and makes it easier for the front pad 100 as a whole to maintain its shape.

[0031] The vertical length of the multiple vertical ribs 131 preferably corresponds to the vertical width of the elastic surface portion 110. In other words, the vertical ribs 131 arranged toward the center in the left-right direction are preferably longer than the vertical ribs 131 arranged toward the ends in the left-right direction.

[0032] FIG. 6 shows, as an example, the vertical rib 131a, vertical rib 131b, vertical rib 131c, and vertical rib 131d shown in FIGS. 3 to 5 as viewed from the left. The vertical rib 131a is a vertical rib located in the center in the left-right direction. The vertical rib 131b is a vertical rib located to the left of the vertical rib 131a. The vertical rib 131c is a vertical rib located to the left of the vertical rib 131b. The vertical rib 131d is a vertical rib located to the left of the vertical rib 131c. As shown in FIG. 6, when the vertical length of the vertical rib 131a is Ha, the vertical length of the vertical rib 131b is Hb, the vertical length of the vertical rib 131c is Hc, and the vertical length of the vertical rib 131d is Hd, the relationship is Ha > Hb > Hc > Hd.

[0033] In this embodiment, a recess 1311 is formed in each of the multiple vertical ribs 131, so that the reaction force against the deformation of the elastic surface portion 110 varies depending on the part of the elastic surface portion 110. The recess 1311 is a portion that is recessed in the opposite direction to the protruding direction of the vertical rib 131.

[0034] Each of the vertical ribs 131 has a recess 1311 formed in the center in the vertical direction. That is, the upper and lower parts of the vertical ribs 131 protrude less in the vertical direction than the center part. Due to this shape, the upper and lower parts of the elastic surface part 110 tend to maintain their shape, while the center part of the elastic surface part 110 tends to deform more easily than the upper and lower parts.

[0035] Furthermore, in this embodiment, the vertical rib 131 (first-first elastic rib) closest to the center in the left-right direction among the plurality of vertical ribs 131 has a recess with a relatively large recess amount, which makes it easier to deform the elastic surface portion 110. On the other hand, the vertical rib 131 (first-second elastic rib) closest to the end in the left-right direction among the plurality of vertical ribs 131 has a recess with a relatively small recess amount, which makes it easier to maintain the shape of the elastic surface portion 110. Here, the recess amount of the recess 1311 is defined as the length from the protruding end surface of the vertical rib 131 to the bottom surface of the recess 1311.

[0036] In this embodiment, as shown in Figure 6, if the recess amount of the recess 1311a of the vertical rib 131a is Ra, the recess amount of the recess 1311b of the vertical rib 131b is Rb, the recess amount of the recess 1311c of the vertical rib 131c is Rc, and the recess amount of the recess 1311d of the vertical rib 131d is Rd, the relationship is Ra ≧ Rb > Rc ≧ Rd.

[0037] Furthermore, the ratio of the recessed amount to the protruding amount of the vertical rib 131 (first-first elastic rib) located at the center in the left-right direction should be equal to or greater than the ratio of the recessed amount to the protruding amount of the vertical rib 131 (first-second elastic rib) located at the end in the left-right direction. Note that the protruding amount of the vertical rib 131 is defined as the length from the back surface (front surface) of the elastic surface portion 110 to the most protruding end face.

[0038] In this embodiment, as shown in Figure 6, if the protrusion amount of the recess 1311a of the vertical rib 131a is Ca, the protrusion amount of the vertical rib 131b is Cb, the protrusion amount of the vertical rib 131c is Ca, and the protrusion amount of the vertical rib 131d is Cd, the relationship is Ra / Ca ≥ Rb / Cb > Rc / Cc ≥ Rd / Cd.

[0039] The protruding end faces of the vertical ribs 131 are preferably not in contact with the pad support frame 40, at least when the elastic surface portion 110 is not deformed. This allows the vertical ribs 131 to maintain their posture without deformation when the elastic surface portion 110 is not deformed. Therefore, a larger reaction force can be generated when the elastic surface portion 110 is deformed.

[0040] The specific shape of the vertical rib 131 has been described above, but the illustrated vertical rib 131 is an example and is not limited to this. For example, the vertical rib 131 does not have to be formed from the upper edge 120a to the lower edge 120b of the protruding edge portion 120, but may be formed as at least one of a vertical rib that is integral with the upper edge 120a and the elastic surface portion 110 and a vertical rib that is integral with the lower edge 120b and the elastic surface portion 110. In this case, the vertical rib 131 does not need to have a recess 1311. Furthermore, the number of vertical ribs 131 is not limited to that shown in the drawings and may be one or more.

[0041] [Front Pad 100: Horizontal Ribs 132] A plurality of horizontal ribs 132 protrude from the surface (front surface) of the elastic surface portion 110 opposite to the side that comes into contact with the user's head H. The multiple horizontal ribs 132 are formed to extend in the left-right direction, and are arranged side by side at predetermined intervals in the up-down direction.

[0042] 4, the protruding end faces of the horizontal ribs 132 may preferably be common to the protruding end faces of the vertical ribs 131. The provision of the horizontal ribs 132 makes it easier for the elastic surface portion 110 to maintain its shape. The horizontal ribs 132 are formed integrally with the elastic surface portion 110 and the vertical ribs 131, and may preferably be made of synthetic rubber such as silicone rubber.

[0043] In this embodiment, the horizontal rib 132 is not provided on the right and left portions of the elastic surface portion 110. In the illustrated example, the left end of the horizontal rib 132 is located to the right of the vertical rib 131c. Similarly, the right end of the horizontal rib 132 may be located to the left of either of the vertical ribs 131. By adopting a configuration in which the length of the horizontal rib 132 is not maximized relative to the left-right length of the elastic surface portion 110, the reaction force against the deformation of the elastic surface portion 110 at the right and left portions of the elastic surface portion 110 is prevented from becoming too strong. Furthermore, when the user's forehead comes into contact with the center of the elastic surface portion 110 in the left-right direction, the right and left portions of the elastic surface portion 110, where the horizontal rib 132 is not provided, bend and press against the user's right and left heads. This improves wearability even for users with relatively small heads.

[0044] [Front Pad 100: Details of the Shape of Upper Edge 120a and Elastic Surface 110] Next, details of the shape of the upper edge 120a of the front pad 100 and the elastic surface 110 of this embodiment will be described. The front pad 100 includes a shape that protrudes rearward so as to fit along the user's forehead.

[0045] 7, the upper edge portion 120a (upper portion of the front pad 100) includes an upper surface 122a that includes an inclined surface 122a1 that extends obliquely downward and forward. The elastic surface portion 110 (rear portion of the front pad 100) includes a contact inclined surface 1101 that extends obliquely downward and forward from a rear end E of the inclined surface 122a1 and that comes into contact with the user's forehead. The contact inclined surface 1101 may be curved to fit the shape of the user's forehead.

[0046] The angle θ between the inclined contact surface 1101 and the inclined surface 122a1 of the upper surface 122a is preferably 45 degrees or less. However, this is not limited to this, and the angle θ may be any acute angle. The angle θ is preferably the smallest angle between the inclined contact surface 1101 and the inclined surface 122a1 of the upper surface 122a.

[0047] The upper surface 122a of the upper edge portion 120a has a shape including an inclined surface 122a1 that extends diagonally downward and forward, which increases the area of ​​the portion of the elastic surface portion 110 that comes into contact with the user's forehead, thereby improving fit.

[0048] Furthermore, the inclined contact surface 1101 and the inclined surface 122a1 of the upper edge portion 120a may form a thick portion 140 that is thicker than the portion of the elastic surface portion 110 below the inclined contact surface 1101. This improves the strength of the portion of the front pad 100 that supports the weight of the HMD 1. Note that the inclined contact surface 1101 may be formed by bending the elastic surface portion 110 without changing the thickness itself.

[0049] The contact inclined surface 1101 may be provided only in the center in the left-right direction of the front pad 100, and may not be provided at the left or right end portions. In other words, the thick portion 140 may be provided only in the center in the left-right direction of the front pad 100, and may not be provided at the left or right end portions.

[0050] The above-described configuration can stabilize the state in which the HMD 1 is worn by the user. Specifically, the inclined contact surface 1101 catches on the user's forehead, thereby preventing the wearing band 20 from slipping downward from the user's head H.

[0051] [Summary of the Front Pad 100] As described above, the front pad 100 of this embodiment can reduce the number of components compared to conventional head pads that use sponge. That is, in this embodiment, the component that provides elasticity to the front pad 100 can be constructed from a single component. Furthermore, since the process of fixing multiple components with adhesive or double-sided tape is unnecessary, the number of manufacturing steps can be reduced. Furthermore, by adopting a configuration including the elastic rib 130, the shape of the elastic surface portion 110 can be maintained and wearability can be improved. Furthermore, by adopting a front pad 100 made of silicone rubber, it is less susceptible to deterioration over time compared to conventional head pads that use a urethane skin that encases a sponge.

[0052] The front pad 100 may not have the elastic ribs 130. In that case, the elastic surface portion 110 may have a thickness sufficient to maintain its shape. The front pad 100 may have the vertical ribs 131 but may not have the horizontal ribs 132.

[0053] [Rear Pad 200] Next, details of the rear pad 200 of this embodiment will be described with reference to Fig. 1 and Figs. 8 to 11. Fig. 8 is a view of the rear pad of this embodiment as seen from the rear. Fig. 9 is a view of the rear pad of this embodiment as seen from the left. Fig. 10 is a cross-sectional view showing a cut surface taken along the XI-XI cutting line shown in Fig. 8. Fig. 11 is a view showing vertical ribs of the rear pad of this embodiment. Note that Figs. 8 to 10 show the rear pad 200 removed from the pad support frame 50, which will be described later.

[0054] The rear pad 200 is an elastic member that comes into contact with the back of the user's head H when the HMD 1 is in use. The provision of the rear pad 200 can reduce the tightness that the user feels when wearing the wearing band 20. This improves wearability and allows the user to use the HMD 1 comfortably.

[0055] The rear pad 200 may be attached to the pad support frame 50. The method for attaching the rear pad 200 to the pad support frame 50 is not particularly limited, but may be, for example, by bonding with an adhesive or the like. The pad support frame 50 may be attached to the front surface of the rear case 28 of the mounting band 20. The pad support frame 50 may be attached so as to be detachable from the rear case 28 and formed as a unit with the rear pad 200. However, this is not a limitation, and the pad support frame 50 may be fixed to the rear case 28. The pad support frame 50 and the rear case 28 may be integrated. That is, the pad support frame 50 may be part of the mounting band 20. The pad support frame 50 may be covered by the rear case 28 and not be visible from the outside. FIG. 1 shows the position where the pad support frame 50 is attached.

[0056] The rear pad 200 includes an elastic surface portion 210, a protruding edge portion 220, and an elastic rib 230. The elastic surface portion 210, the protruding edge portion 220, and the elastic rib 230 are integrally formed and may be made of synthetic rubber, such as silicone rubber.

[0057] [Rear Pad 200: Elastic Surface Portion 210] The elastic surface portion 210 is the portion that comes into contact with the back of the user's head when in use. The elastic surface portion 210 is preferably curved to fit the back of the user's head. That is, as shown in Figures 1 and 10, the elastic surface portion 210 is preferably curved so as to extend forward from the center toward the end in the left-right direction.

[0058] 9, the protruding edge portion 220 is a portion that protrudes rearward from the edge of the elastic surface portion 210. In the example shown in the figure, the protruding edge portion 220 is substantially annular and includes an upper edge 220a provided on the upper part of the elastic surface portion 210 and a lower edge 220b provided on the lower part of the elastic surface portion 210.

[0059] The protruding edge portion 220 forms a deformation allowance space P2 together with the elastic surface portion 210. The elastic surface portion 210 elastically deforms and recesses rearward when it comes into contact with the back of the user's head. The deformation allowance space P2 is an area that allows deformation of the elastic surface portion 210 when it comes into contact with the back of the user's head. The deformation allowance space P2 is formed between the pad support frame 50 and the elastic surface portion 210, and is preferably a hollow in which no other components are disposed except for the rear pad 200 portion.

[0060] [Rear pad 200: vertical rib 230] If the elastic surface portion 210 is thin, it becomes difficult to maintain its shape. Therefore, in this embodiment, a configuration is adopted in which a vertical rib 230, which is a first elastic rib, is provided to generate a reaction force against deformation of the elastic surface portion 210. The vertical rib 230 is formed on the surface (rear surface) of the elastic surface portion 210 opposite to the surface that comes into contact with the user's forehead, within the deformation-allowing space P2.

[0061] The vertical ribs 230 protrude from the surface (rear surface) of the elastic surface portion 210 opposite to the side that comes into contact with the back of the user's head, and extend from the upper edge 220a to the lower edge 220b of the protruding edge portion 220. The vertical ribs 230 are arranged side by side at predetermined intervals in the left-right direction.

[0062] When the user's head comes into contact with the elastic surface portion 210, the elastic surface portion 210 elastically deforms to expand its surface area. At this time, the multiple vertical ribs 230 formed from the upper edge 220a to the lower edge 220b are stretched, generating a reaction force against the deformation of the elastic surface portion 210. This allows the shape of the elastic surface portion 210 to be maintained. Furthermore, the reaction force against the deformation of the elastic surface portion 210 improves the elasticity of the rear pad 200. As a result, the wearability of the HMD 1 improves.

[0063] Here, the rear pad 200 preferably has a portion that is easy to maintain its shape and a portion that is easy to deform, depending on the portion that comes into contact with the user's back of the head. The peripheral portion of the elastic surface portion 210 preferably maintains its shape easily, and the central portion of the elastic surface portion 210 preferably deforms easily. Specifically, the upper and lower portions of the elastic surface portion 210 in the vertical direction preferably maintain their shape easily, and the central portion of the elastic surface portion 210 in the vertical direction preferably deforms easily. Furthermore, the right and left portions of the elastic surface portion 210 in the horizontal direction preferably maintain their shape easily, and the central portion of the elastic surface portion 210 in the horizontal direction preferably deforms easily. This configuration improves fit and makes it easier for the rear pad 200 as a whole to maintain its shape.

[0064] In this embodiment, a recess 2301 is formed in each of the multiple vertical ribs 230, so that the reaction force against the deformation of the elastic surface portion 210 varies depending on the part of the elastic surface portion 210. The recess 2301 is a portion that is recessed in the opposite direction to the protruding direction of the vertical rib 230.

[0065] A recess 2301 is formed in the center in the up-down direction of each of the vertical ribs 230. Due to this shape, the shape of the upper and lower parts of the elastic surface portion 210 is more easily maintained by the vertical ribs 230, while the center part of the elastic surface portion 210 is more easily deformed than the upper and lower parts.

[0066] Furthermore, in this embodiment, the vertical rib 230 (first-first elastic rib) on the center side in the left-right direction among the plurality of vertical ribs 230 has a recess 2301 with a relatively large recess amount, which makes it easier to deform the elastic surface portion 210. On the other hand, the vertical rib 230 (first-second elastic rib) on the end side in the left-right direction among the plurality of vertical ribs 230 has a recess 2301 with a relatively small recess amount, which makes it easier to maintain the shape of the elastic surface portion 210. Here, the recess amount of the recess 2301 is defined as the length from the protruding end surface of the vertical rib 230 to the bottom surface of the recess 2301.

[0067] As shown in Figure 11, if the recess amount of the recess 2301a of the vertical rib 230a is ra, the recess amount of the recess 2301b of the vertical rib 230b is rb, the recess amount of the recess 2301c of the vertical rib 230c is Rc, and the recess amount of the recess 2301d of the vertical rib 230d is rd, then it is preferable that the relationship be ra ≥ rb > rc ≥ rd.

[0068] The ratio of the recessed amount to the protruding amount of the vertical rib 230 arranged at the center in the left-right direction should be equal to or greater than the ratio of the recessed amount to the protruding amount of the vertical rib 230 arranged at the end in the left-right direction. The protruding amount of the vertical rib 230 is defined as the length from the rear surface of the elastic surface portion 210 to the most protruding end face.

[0069] In this embodiment, as shown in Figure 11, if the protrusion amount of the recess 2301a of the vertical rib 230a is ca, the protrusion amount of the vertical rib 230b is cb, the protrusion amount of the vertical rib 230c is cc, and the protrusion amount of the vertical rib 230d is cd, then the relationship is ra / ca ≥ rb / cb > rc / cc ≥ rd / cd.

[0070] It is preferable that the protruding end faces of the plurality of vertical ribs 230 are not in contact with the pad support frame 50, at least when the elastic surface portion 210 is not deformed. As a result, the vertical ribs 230 maintain their posture without deformation when the elastic surface portion 210 is not deformed. Therefore, when the elastic surface portion 210 is deformed, a larger reaction force can be generated.

[0071] The specific shape of the vertical rib 230 has been described above, but the illustrated vertical rib 230 is merely an example and is not limited thereto. For example, the vertical rib 230 does not have to be formed from the upper edge 220a to the lower edge 220b of the protruding edge portion 220, but may be formed as at least one of a vertical rib that is integral with the upper edge 220a and the elastic surface portion 210 and a vertical rib that is integral with the lower edge 220b and the elastic surface portion 210. In this case, the vertical rib 230 does not need to have a recess 2301. Furthermore, the number of vertical ribs 230 is not limited to that shown in the drawings, and may be one or more.

[0072] The rear pad 200 does not necessarily have to have the vertical ribs 230. In that case, the elastic surface portion 210 may have a thickness sufficient to maintain its shape. The rear pad 200 may also have horizontal ribs in addition to the vertical ribs 230, similar to the front pad 100.

Claims

1. A front pad for a head mounted display, an upper surface; and a contact inclined surface extending obliquely downward and forward from a rear end of the upper surface and contacting a user's forehead; The upper surface includes an inclined surface extending upward toward the rear, The contact inclined surface extends obliquely downward and forward from a rear end of the inclined surface so as to form an acute angle with the inclined surface. Front pad.

2. The contact inclined surface includes a curved shape that fits the user's forehead. The front pad according to claim 1.

3. the inclined contact surface and the upper surface form a thick portion that is thicker than a portion below the inclined contact surface; The front pad according to claim 1.

4. The upper portion including the upper surface and the rear portion including the contact inclined surface are made of a single member and are integrally formed with each other. The front pad according to claim 1.

5. The single member is made of synthetic rubber. The front pad according to claim 4.

6. The upper portion and the rear portion form a deformation allowing space that allows deformation of the rear portion due to contact with the user's forehead. The front pad according to claim 5.

7. A front pad according to any one of claims 1 to 6; A main body that houses a display; A mounting band extending rearward from the main body; having The front pad is attached to the front of the mounting band. Head-mounted display.