Head-mounted display device and head-mounted module thereof

Abstract

The invention discloses a head-mounted display device and a head-mounted module thereof. The head band module comprises a first band body and a second band body. The first belt body is provided with a first tail end, a second tail end, a first pivoting part and a second pivoting part; the first tail end and the second tail end are respectively connected to two opposite sides of a host. The first pivot joint part and the second pivot joint part are located between the first tail end and the second tail end. And the length of the part, between the first pivoting part and the second pivoting part, of the first belt body can be elastically changed. The second belt body is provided with a third tail end and a fourth tail end. The second belt body is rigid and adjustable in length. The third tail end is pivoted with the first pivoting part; and the fourth tail end is pivoted with the second pivoting part.

Description

Technical Field

[0001] The invention relates to a head-mounted display device and a headband module thereof. Background Art

[0002] With the rapid advancement of current technology, the types and functions of head-mounted display devices are becoming increasingly diverse. Take eye mask-type head-mounted display devices as an example. When the user wears this type of device, the gyroscope and position tracker inside the head-mounted display device track the user's movement to display the corresponding scene image, providing the user with an experience as if they are in a virtual world.

[0003] Most existing head-mounted display devices use either a rigid bracket or soft straps to secure the device to the user's head. The advantages of a rigid bracket include high stability, balanced weight, and the ability to attach a battery module. However, its disadvantages include difficulty adapting to different head shapes, resulting in poor comfort. Furthermore, the rigid bracket's location at the back of the head makes it difficult for the user to use the device while lying down. Soft straps offer a more comfortable user experience, but they are less stable, make it difficult to attach an external battery, and are more difficult to adjust to the appropriate tightness. Summary of the Invention

[0004] The present invention is directed to a head-mounted display device and a headband module thereof, which can improve the problem of difficulty in balancing device stability and comfort.

[0005] The head-mounted display device of the present invention includes a host and a headband module. The headband module includes a first band and a second band. The first band has a first end, a second end, a first pivot portion, and a second pivot portion. The first end and the second end are respectively connected to opposite sides of the host. The first pivot portion and the second pivot portion are located between the first end and the second end. The length of the portion of the first band between the first pivot portion and the second pivot portion can be elastically changed. The second band has a third end and a fourth end. The second band is rigid and its length is adjustable. The third end is pivotally connected to the first pivot portion. The fourth end is pivotally connected to the second pivot portion.

[0006] The headband module of the present invention includes a first strap and a second strap. The first strap has a first end, a second end, a first pivot portion, and a second pivot portion. The first end and the second end are respectively connected to opposite sides of a host. The first pivot portion and the second pivot portion are located between the first end and the second end. The length of the portion of the first strap between the first pivot portion and the second pivot portion is elastically variable. The second strap has a third end and a fourth end. The second strap is rigid and its length is adjustable. The third end is pivotally connected to the first pivot portion. The fourth end is pivotally connected to the second pivot portion.

[0007] In one embodiment of the present invention, the first belt body includes a first sub-belt body, a second sub-belt body, and a third sub-belt body. The first sub-belt body has a first end and a first pivotal portion. The second sub-belt body has a second end and a second pivotal portion. The first and second sub-belt bodies are rigid. The third sub-belt body is connected to the first and second pivotal portions, and the length of the third sub-belt body is elastically adjustable.

[0008] In one embodiment of the present invention, the third sub-band includes a first straight strip and a second straight strip. The first straight strip is connected to the first pivotal portion and the second pivotal portion and is configured to contact the back of a user's head. The second straight strip is connected to the first pivotal portion and the second pivotal portion and is configured to contact the top of the user's head.

[0009] In one embodiment of the present invention, the middle section of the second strap has a first coupling portion. The first straight strip has a second coupling portion. The second straight strip has a third coupling portion. When the second strap is pivoted to the back of the user's head, the first coupling portion is coupled to the second coupling portion. When the second strap is pivoted to the top of the user's head, the first coupling portion is coupled to the third coupling portion.

[0010] In one embodiment of the present invention, the headband module further includes a first binding rope segment and a second binding rope segment. The middle section of the second band body has an adjustment member. The distribution path of the first binding rope segment passes through the first sub-band body, the middle section of the second straight bar, the first pivoting portion, the middle section of the first straight bar, the first pivoting portion and the adjustment member in sequence. The distribution path of the second binding rope segment passes through the second sub-band body, the middle section of the second straight bar, the second pivoting portion, the middle section of the first straight bar, the second pivoting portion and the adjustment member in sequence. The adjustment member is used to retract and extend the first binding rope segment and the second binding rope segment to elastically change the length of the first straight bar and the second straight bar. The adjustment member is used to adjust the length of the second band body.

[0011] In one embodiment of the present invention, the third sub-band includes a first straight bar and a second straight bar. The first straight bar is connected to the first pivot portion and the second pivot portion and is configured to contact the back of a user's head. The second straight bar is connected to the middle section of the first straight bar and the main unit and is configured to contact the top of the user's head.

[0012] In one embodiment of the present invention, the middle section of the second strap has a first coupling portion. The first straight strip has a second coupling portion. The second straight strip has a third coupling portion. When the second strap is pivoted to the back of the user's head, the first coupling portion is coupled to the second coupling portion. When the second strap is pivoted to the top of the user's head, the first coupling portion is coupled to the third coupling portion.

[0013] In one embodiment of the present invention, the headband module further includes a binding cord segment. The middle section of the second strap body has an adjustment member. The binding cord segment is arranged in a path that sequentially passes through the adjustment member, the first pivoting portion, the middle section of the first straight bar, one end of the second straight bar connected to the main unit, the middle section of the first straight bar, the second pivoting portion, and the adjustment member. The adjustment member is used to retract and extend the binding cord segment to elastically change the length of the first and second straight bars. The adjustment member is used to adjust the length of the second strap body.

[0014] Based on the above, in the head-mounted display device and the headband module thereof of the present invention, the rotatable rigid headband provides a stable and comfortable wearing experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of a head-mounted display device according to an embodiment of the present invention;

[0016] Figure 2 yes Figure 1 A schematic diagram of the actuation of the second band body of the headband module of the head-mounted display device;

[0017] Figure 3 yes Figure 1 A schematic diagram of a portion of a headband module of a head-mounted display device;

[0018] Figure 4 yes Figure 1 A schematic diagram of a coupling portion of a headband module of a head-mounted display device;

[0019] Figure 5A yes Figure 1 A schematic diagram of a first binding rope segment and a second binding rope segment of a headband module of a head-mounted display device;

[0020] Figure 5B yes Figure 5A A schematic diagram of some components of a headband module of a head-mounted display device;

[0021] Figure 6 yes Figure 5A A schematic diagram of a first binding rope segment of a headband module;

[0022] Figure 7 yes Figure 5A A schematic diagram of a second binding rope segment of a headband module;

[0023] Figure 8 is a schematic diagram of a head-mounted display device according to another embodiment of the present invention;

[0024] Figure 9 yes Figure 8 A schematic diagram of another state of a headband module of a head-mounted display device;

[0025] Figure 10 yes Figure 8 Schematic diagram of the binding rope section of the headband module of the head-mounted display device. DETAILED DESCRIPTION

[0026] Reference will now be made in detail to exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Whenever possible, the same reference numerals are used in the drawings and the description to refer to the same or like parts.

[0027] Figure 1 Schematic diagram of a head mounted display device according to an embodiment of the present invention. Figure 1 The head mounted display device 50 of this embodiment includes a host 52 and a headband module 100. The headband module 100 is used to fix the host 52 on the user's head.

[0028] In this embodiment, host 52 can be used in fields such as virtual reality systems, augmented reality systems, or mixed reality systems. Host 52 may include components such as an optical system and a protective housing, and may be provided with or suitable for housing a display. The display may be a built-in display or an external portable display (such as a smartphone), but the present invention is not limited thereto. The optical system includes optical components, such as lenses, light guides, or prisms, for changing the optical path of the display. Figure 1 The host 52 in the figure is presented in a slightly larger form, but the host 52 can also be a lighter form or other forms.

[0029] Figure 2 yes Figure 1 Schematic diagram of the operation of the second band body of the headband module of the head-mounted display device. Please refer to Figure 1 and Figure 2 The headband module 100 of this embodiment includes a first band body 110 and a second band body 120. The first band body 110 has a first end 110A, a second end 110B, a first pivot portion 110C, and a second pivot portion 110D. The first end 110A and the second end 110B are respectively connected to opposite sides of the host 52. The first pivot portion 110C and the second pivot portion 110D are located between the first end 110A and the second end 110B. The length of the portion of the first band body 110 between the first pivot portion 110C and the second pivot portion 110D can be elastically changed. That is, the portion of the first band body 110 between the first pivot portion 110C and the second pivot portion 110D is made of an elastic material, such as fabric or other materials, which can fit the user's head and provide not only support but also a comfortable wearing feeling.

[0030] The second strap 120 has a third end 120A and a fourth end 120B. The second strap 120 is rigid and adjustable in length. Specifically, the distance between the third end 120A and the fourth end 120B can be varied to accommodate users with varying head circumferences. Furthermore, the rigidity of the second strap 120 provides high stability, balanced weight, and the ability to accommodate additional battery modules. The third end 120A of the second strap 120 is pivotally connected to the first pivot 110C. The fourth end 120B of the second strap 120 is pivotally connected to the second pivot 110D. Therefore, the second strap 120 can pivot relative to the first strap 110, for example, to a horizontal position to contact the back of the user's head, providing the most stable support. Alternatively, the second strap 120 can be rotated vertically to contact the top of the user's head. This ensures that the user will not feel uncomfortable with the second strap 120 pressing against the back of their head, whether they are sitting and leaning back, or lying down. In other words, since the portion of the first strap 110 between the first pivot portion 110C and the second pivot portion 110D is made of an elastic material, such as cloth or other materials, when the user leans against the back of a chair or lies down, the first strap 110 can fit snugly against the user's head, providing not only support but also a comfortable wearing experience. Of course, the second strap 120 can also be rotated to other directions, and the present invention is not limited thereto. In addition, between the third end 120A and the first pivot portion 110C and between the fourth end 120B and the second pivot portion 110D, appropriate segmented or non-segmented snapping forces can be provided to allow the second strap 120 to stay in the position desired by the user, such as Figure 2 In other words, the second belt 120 can be rotated by the user to the top of the head or any position between the top of the head and the back of the head. Figure 2 Only 45 degrees is shown for illustration purposes.

[0031] In this embodiment, the first belt 110 includes a first sub-belt 112, a second sub-belt 114, and a third sub-belt 116. The first sub-belt 112 has a first end 110A and a first pivot portion 110C. The second sub-belt 114 has a second end 110B and a second pivot portion 110D. The first and second sub-belts 112 and 114 are rigid. The third sub-belt 116 is connected to the first and second pivot portions 110C and 110D, and its length is elastically adjustable. For example, the third sub-belt 116 can be made of an elastic material, such as fabric or other materials.

[0032] In this embodiment, the third sub-band 116 includes a first straight strip 116A and a second straight strip 116B. The first straight strip 116A is connected to the first pivot portion 110C and the second pivot portion 110D and is used to contact the back of a user's head. The second straight strip 116B is connected to the first pivot portion 110C and the second pivot portion 110D and is used to contact the top of the user's head. For example, the two ends of the first straight strip 116A are respectively connected to the two ends of the second straight strip 116B. The angle between the first straight strip 116A and the second straight strip 116B is, for example, 90 degrees, but this is not a limitation of the present invention. The first straight strip 116A extends from the right side of the user's head, around the back of the head, to the left side, while the second straight strip 116B extends from the right side of the user's head, around the top of the head, to the left side. Therefore, when the user leans back or lies down, the third sub-band 116 can fit snugly against the user's head, providing support and a comfortable wearing experience.

[0033] Figure 3 yes Figure 1 Schematic diagram of a portion of a headband module of a head-mounted display device. Figure 4 yes Figure 1 Schematic diagram of the coupling portion of the headband module of the head-mounted display device. Figure 3 and Figure 4 In this embodiment, to ensure a more stable fixation of the second strap 120 at the top or back of the head, the middle section of the second strap 120 may also have a first coupling portion 120C. The first straight strip 116A may also have a second coupling portion 116A1. The second straight strip 116B may also have a third coupling portion 116B1. When the second strap 120 is pivoted to the back of the user's head, the first coupling portion 120C couples to the second coupling portion 116A1. When the second strap 120 is pivoted to the top of the user's head, the first coupling portion 120C couples to the third coupling portion 116B1. In this manner, the second strap 120 can be secured at the back of the user's head or at the top of the user's head. In this embodiment, the first coupling portion 120C and the second coupling portion 116A1 are coupled together using, for example, a concave-convex design. However, hook-and-loop, Velcro, magnetic attraction, or other designs may also be used for coupling. Similarly, this embodiment may also not have the first coupling portion 120C, the second coupling portion 116A1, and the third coupling portion 116B1, and only provide the appropriate segmented or non-segmented locking force through the structure between the third end 120A and the first pivotal portion 110C and between the fourth end 120B and the second pivotal portion 110D, so as to keep the second strap 120 at the position desired by the user.

[0034] Figure 5A yes Figure 1 Schematic diagram of a first binding rope segment and a second binding rope segment of a headband module of a head-mounted display device. Figure 5B yes Figure 5A A schematic diagram of some components of the headband module of the head-mounted display device. Some components in the figure are shown transparently with dotted lines to facilitate understanding of other internal components. Figure 5A and Figure 5B In this embodiment, the headband module 100 further includes a first binding rope segment 130 and a second binding rope segment 140. In this embodiment, the first binding rope segment 130 and the second binding rope segment 140 are the same binding rope, but for the convenience of explaining the distribution position of the binding rope, they are distinguished as the first binding rope segment 130 and the second binding rope segment 140. The middle section of the second band body 120 has an adjustment piece 120D. The dividing point between the first binding rope segment 130 and the second binding rope segment 140 is located at the adjustment piece 120D. In other embodiments, the first binding rope segment 130 and the second binding rope segment 140 can also be independent thin ropes, but one end of each is fixed to the adjustment piece 120D.

[0035] Figure 6 yes Figure 5A Schematic diagram of the first strap section of the headband module. Please refer to Figure 6 The first tie rope segment 130 is arranged along a path that sequentially passes through the first sub-belt 112, the middle section of the second straight bar 116B, the first pivot portion 110C, the middle section of the first straight bar 116A, the first pivot portion 110C, and the adjustment member 120D. In this embodiment, the second belt 120 includes, for example, a partially overlapping first rack 122 and second rack 124, which are coupled to each other via a gear 126. Between the first pivot portion 110C and the adjustment member 120D, the first tie rope segment 130, for example, passes from the first pivot portion 110C through the first rack 122, exits, passes through the second rack 124, and then enters the adjustment member 120D, where it connects to the second tie rope segment 140. Please refer to 5B. In more detail, the first binding rope segment 130 passes through the interior of the first rack 122 and then passes out from the lower surface of the first rack 122, passes under the gear 126, penetrates the second rack 124 from the lower surface, passes over the second rack 124, and then passes into the adjustment member 120D and is connected to the second binding rope segment 140.

[0036] Figure 7 yes Figure 5A Schematic diagram of the second strap section of the headband module. Please refer to Figure 7The second lashing rope segment 140 is arranged along a path that sequentially passes through the second sub-belt 114, the middle section of the second straight bar 116B, the second pivoting portion 110D, the middle section of the first straight bar 116A, the second pivoting portion 110D, and the adjusting member 120D. Between the second pivoting portion 110D and the adjusting member 120D, the second lashing rope segment 140, for example, passes from the second pivoting portion 110D through the second rack 124, then through the first rack 122, into the adjusting member 120D, and connects to the first lashing rope segment 130. Referring to Figure 5B , for more detailed information, the second lashing rope segment 140 passes through the interior of the second rack 124, then exits from the top surface of the second rack 124, passes above the gear 126, and then penetrates the second rack 124 from the top surface of the first rack 122. It then passes below the first rack 122, into the adjusting member 120D, and connects to the first lashing rope segment 130.

[0037] In this embodiment, the second coupling portion 116A1 is located in the middle of the first straight strip 116A. Therefore, the first tying rope segment 130 appears to bypass the second coupling portion 116A1, but in reality, the first tying rope segment 130 is not restricted to bypass the second coupling portion 116A1. The third coupling portion 116B1 is located in the middle of the second straight strip 116B. Therefore, the second tying rope segment 140 appears to bypass the third coupling portion 116B1, but in reality, the second tying rope segment 140 is not restricted to bypass the third coupling portion 116B1.

[0038] Adjustment member 120D is used to retract and extend the first and second tie segments 130, 140, thereby changing the lengths of the first and second bars 116A, 116B, and thereby the overall length of the second strap 120. Specifically, when adjustment member 120D pulls the first tie segment 130, because the first tie segment 130 passes through the first rack 122 and the second rack 124, the overlap between the first and second racks 122, 124 changes, thereby changing the overall length of the second strap 120. More specifically, because the first tie segment 130 passes through the second rack 124, when adjustment member 120D pulls the first tie segment 130, the first tie segment 130 pulls the second rack 124 toward adjustment member 120D, thereby increasing the overlap between the first and second racks 122, 124. Furthermore, the first tying rope segment 130 passes through the portion between the middle of the first straight bar 116A and the first pivoting portion 110C, and the first tying rope segment 130 passes through the portion between the middle of the second straight bar 116B and the first pivoting portion 110C. Therefore, tightening the first tying rope segment 130 shortens the lengths of the first straight bar 116A and the second straight bar 116B near the first pivoting portion 110C.

[0039] Furthermore, when the adjustment member 120D pulls the first tie segment 130, it also simultaneously pulls the second tie segment 140. Because the second tie segment 140 passes through the first rack 122 and the second rack 124, it also changes the overlap between the first rack 122 and the second rack 124, thereby changing the overall length of the second strap 120. More specifically, because the second tie segment 140 passes through the first rack 122, when the adjustment member 120D pulls the second tie segment 140, it pulls the first rack 122 toward the adjustment member 120D, thereby increasing the overlap between the first rack 122 and the second rack 124. Furthermore, the second tie segment 140 passes around the portion between the middle of the first straight bar 116A and the second pivotal portion 110D, and the second tie segment 140 passes around the portion between the middle of the second straight bar 116B and the second pivotal portion 110D. Therefore, when the second binding rope segment 140 is tightened, the lengths of the first straight bar 116A and the second straight bar 116B near the second pivoting portion 110D are shortened.

[0040] Generally speaking, when the adjusting member 120D pulls the first and second binding rope segments 130, 140, the lengths of the entire first and second straight strips 116A, 116B can be shortened, and the entire length of the second strap 120 can also be shortened, until the user feels that the first strap 110 is firmly securing the main unit 52 to their head. For example, the adjusting member 120D can be a knob. When the adjusting member 120D is rotated, a portion of the first and second binding rope segments 130, 140 can be wrapped around the adjusting member 120D to tighten the first strap 110, or the portion of the first and second binding rope segments 130, 140 wrapped around the adjusting member 120D can be released to loosen the first strap 110.

[0041] In other embodiments not shown, the adjustment member 120D can be connected to the gear 126. Rotating the adjustment member 120D can drive the gear 126 to change the overlap between the first rack 122 and the second rack 124, thereby changing the overall length of the second strap 120. In this case, even if the first tie rope segment 130 does not pass through both the first rack 122 and the second rack 124 at the same time, and the second tie rope segment 140 does not pass through both the first rack 122 and the second rack 124 at the same time, the user can still adjust the length of the first strap 110 and the second strap 120 with a single action.

[0042] Figure 8 is a schematic diagram of a head-mounted display device according to another embodiment of the present invention. Figure 9 yes Figure 8 Schematic diagram of another state of the headband module of the head-mounted display device. Please refer to Figure 8 and Figure 9 The head mounted display device 60 of this embodiment and Figure 1The head-mounted display device 50 is similar to the head-mounted display device 50 of the embodiment, and only the differences between the two are described here. The third sub-band body 216 of the headband module 200 of the head-mounted display device 60 of this embodiment includes a first straight bar 216A and a second straight bar 216B. The first straight bar 216A is connected to the first pivot portion 110C and the second pivot portion 110D and is used to contact the back of the user's head. The second straight bar 216B is connected to the middle section of the first straight bar 216A and the host 52 and is used to contact the top of the user's head. The angle between the connection between the first straight bar 216A and the second straight bar 216B is, for example, 90 degrees, but the present invention is not limited to this. The first straight bar 216A extends from the right side of the user's head, around the back of the head, and to the left side, while the second straight bar 216B extends from the back of the user's head, around the top of the head, and to the front.

[0043] In this embodiment, the first straight strip 216A has a second coupling portion 216A1. The second straight strip 216B has a third coupling portion 216B1. When the second strap 120 is pivoted to the back of the user's head, the first coupling portion 120C couples to the second coupling portion 216A1. When the second strap 120 is pivoted to the top of the user's head, the first coupling portion 120C couples to the third coupling portion 216B1. In this way, the second strap 120 can be secured to the back of the user's head or the top of the user's head.

[0044] Figure 10 yes Figure 8 Schematic diagram of the strap section of the headband module of the head-mounted display device. Please refer to Figure 10 In this embodiment, the headband module 200 further includes a binding cord segment 230. The binding cord segment 230 is arranged in a path that passes through the adjustment member 120D, the first pivot portion 110C, the middle section of the first straight bar 216A, the end of the second straight bar 216B connected to the main unit 52, the middle section of the first straight bar 216A, the second pivot portion 110D, and the adjustment member 120D. For example, in this embodiment, the main unit 62 has a crossbar 62A, the second straight bar 216B is connected to the crossbar 62A, and the binding cord segment 230 also passes around the crossbar 62A. The adjustment member 120D is used to retract and extend the binding cord segment 230 to elastically change the length of the first straight bar 216A and the second straight bar 216B. Because the binding rope segment 230 wraps around the entire first straight strip 216A and the second straight strip 216B, when the adjustment member 120D pulls the binding rope segment 230, the length of the entire first straight strip 216A and the second straight strip 216B can be shortened until the user feels that the third sub-strap 216 is firmly securing the main unit 52 to their head. Similarly, the adjustment member 120D can also be used to adjust the length of the second strap 120, and the adjustment member 120D can simultaneously adjust the lengths of the third sub-strap 216 and the second strap 120. Furthermore, the detailed structure and operation of the binding rope segment 230 driving the second strap 120 are already described in the previous embodiment and will not be further elaborated here.

[0045] In summary, in the head-mounted display device and headband module of the present invention, the rigid headband provides stable support at the back of the head and can also rotate away from the back of the head to prevent discomfort when the user's head leans back. The elastic headband conforms to the user's head, thus providing a stable and comfortable wearing experience under different operating requirements, such as standing, sitting, lying down, and other different usage scenarios. In addition, when using an adjustment member and a binding cord, the user can simultaneously tighten the rigid headband and the elastic headband via the binding cord by simply rotating the adjustment member.

Claims

1. A head-mounted display device, characterized in that: include: Host; Headband module, including: a first strap having a first end, a second end, a first pivoting portion, and a second pivoting portion, wherein the first end and the second end are respectively connected to opposite sides of the main unit, the first pivoting portion and the second pivoting portion are located between the first end and the second end, and the length of the portion of the first strap between the first pivoting portion and the second pivoting portion is elastically variable; and The second belt body has a third end and a fourth end, wherein the second belt body is rigid and its length is adjustable, the third end is pivotally connected to the first pivoting portion, and the fourth end is pivotally connected to the second pivoting portion.

2. The head-mounted display device according to claim 1, wherein The first belt body includes a first sub-belt body, a second sub-belt body, and a third sub-belt body. The first sub-belt body has the first end and the first pivot portion, the second sub-belt body has the second end and the second pivot portion, the first sub-belt body and the second sub-belt body are rigid, and the third sub-belt body is connected to the first pivot portion and the second pivot portion, and the length of the third sub-belt body can be elastically changed.

3. The head-mounted display device according to claim 2, wherein: The third sub-belt body includes a first straight bar and a second straight bar. The first straight bar is connected to the first pivotal portion and the second pivotal portion and is used to contact the back of the user's head. The second straight bar is connected to the first pivotal portion and the second pivotal portion and is used to contact the top of the user's head.

4. The head-mounted display device according to claim 3, wherein: The middle section of the second belt body has a first coupling portion, the first straight bar has a second coupling portion, and the second straight bar has a third coupling portion. When the second belt body is pivoted to the back of the user's head, the first coupling portion is used to couple to the second coupling portion. When the second belt body is pivoted to the top of the user's head, the first coupling portion is used to couple to the third coupling portion.

5. The head-mounted display device according to claim 3, wherein: The headband module also includes a first binding rope segment and a second binding rope segment. The middle section of the second band body has an adjustment member. The distribution path of the first binding rope segment passes through the first sub-band body, the middle section of the second straight bar, the first pivoting portion, the middle section of the first straight bar, the first pivoting portion and the adjustment member in sequence. The distribution path of the second binding rope segment passes through the second sub-band body, the middle section of the second straight bar, the second pivoting portion, the middle section of the first straight bar, the second pivoting portion and the adjustment member in sequence. The adjustment member is used to retract and extend the first binding rope segment and the second binding rope segment to elastically change the length of the first straight bar and the second straight bar, and the adjustment member is used to adjust the length of the second band body.

6. The head-mounted display device according to claim 2, wherein: The third sub-band body includes a first straight bar and a second straight bar. The first straight bar is connected to the first pivot portion and the second pivot portion and is used to contact the back of the user's head. The second straight bar is connected to the middle section of the first straight bar and the host and is used to contact the top of the user's head.

7. The head-mounted display device according to claim 6, wherein: The middle section of the second belt body has a first coupling portion, the first straight bar has a second coupling portion, and the second straight bar has a third coupling portion. When the second belt body is pivoted to the back of the user's head, the first coupling portion is used to couple to the second coupling portion. When the second belt body is pivoted to the top of the user's head, the first coupling portion is used to couple to the third coupling portion.

8. The head-mounted display device according to claim 6, wherein: The headband module also includes a binding rope segment. The middle section of the second strap body has an adjustment member. The distribution path of the binding rope segment passes through the adjustment member, the first pivot portion, the middle section of the first straight bar, one end of the second straight bar connected to the host, the middle section of the first straight bar, the second pivot portion and the adjustment member. The adjustment member is used to retract and extend the binding rope segment to elastically change the length of the first straight bar and the second straight bar, and the adjustment member is used to adjust the length of the second strap body.

9. A headband module, characterized in that: include: a first strap having a first end, a second end, a first pivoting portion, and a second pivoting portion, wherein the first end and the second end are respectively connected to opposite sides of the main unit, the first pivoting portion and the second pivoting portion are located between the first end and the second end, and the length of the portion of the first strap between the first pivoting portion and the second pivoting portion is elastically variable; and The second belt body has a third end and a fourth end, wherein the second belt body is rigid and its length is adjustable, the third end is pivotally connected to the first pivoting portion, and the fourth end is pivotally connected to the second pivoting portion.

10. The headband module according to claim 9, wherein: The first belt body includes a first sub-belt body, a second sub-belt body, and a third sub-belt body. The first sub-belt body has the first end and the first pivot portion, the second sub-belt body has the second end and the second pivot portion, the first sub-belt body and the second sub-belt body are rigid, and the third sub-belt body is connected to the first pivot portion and the second pivot portion, and the length of the third sub-belt body can be elastically changed.

11. The headband module according to claim 10, wherein: The third sub-belt body includes a first straight bar and a second straight bar. The first straight bar is connected to the first pivotal portion and the second pivotal portion and is used to contact the back of the user's head. The second straight bar is connected to the first pivotal portion and the second pivotal portion and is used to contact the top of the user's head.

12. The headband module according to claim 11, wherein: The middle section of the second belt body has a first coupling portion, the first straight bar has a second coupling portion, and the second straight bar has a third coupling portion. When the second belt body is pivoted to the back of the user's head, the first coupling portion is used to couple to the second coupling portion. When the second belt body is pivoted to the top of the user's head, the first coupling portion is used to couple to the third coupling portion.

13. The headband module according to claim 11, wherein: It also includes a first binding rope segment and a second binding rope segment, wherein the middle section of the second belt body has an adjusting piece, the distribution path of the first binding rope segment passes through the first sub-belt body, the middle section of the second straight bar, the first pivoting portion, the middle section of the first straight bar, the first pivoting portion and the adjusting piece in sequence, and the distribution path of the second binding rope segment passes through the second sub-belt body, the middle section of the second straight bar, the second pivoting portion, the middle section of the first straight bar, the second pivoting portion and the adjusting piece in sequence, the adjusting piece is used to retract and extend the first binding rope segment and the second binding rope segment to elastically change the length of the first straight bar and the second straight bar, and the adjusting piece is used to adjust the length of the second belt body.

14. The headband module according to claim 10, wherein: The third sub-band body includes a first straight bar and a second straight bar. The first straight bar is connected to the first pivot portion and the second pivot portion and is used to contact the back of the user's head. The second straight bar is connected to the middle section of the first straight bar and the host and is used to contact the top of the user's head.

15. The headband module according to claim 14, wherein: The middle section of the second belt body has a first coupling portion, the first straight bar has a second coupling portion, and the second straight bar has a third coupling portion. When the second belt body is pivoted to the back of the user's head, the first coupling portion is used to couple to the second coupling portion. When the second belt body is pivoted to the top of the user's head, the first coupling portion is used to couple to the third coupling portion.

16. The headband module according to claim 14, wherein: It also includes a binding rope, wherein the middle section of the second belt body has an adjustment part, and the distribution path of the binding rope passes through the adjustment part, the first pivot part, the middle section of the first straight bar, one end of the second straight bar connected to the host, the middle section of the first straight bar, the second pivot part and the adjustment part in sequence. The adjustment part is used to retract and extend the binding rope to elastically change the length of the first straight bar and the second straight bar, and the adjustment part is used to adjust the length of the second belt body.

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