Head-mounted display

Abstract

Provided is a HMD (1) that efficiently suppresses an increase in temperature in a device body (10). The HMD (1) comprises: a body housing (11) that accommodates at least a display panel (13), a right lens (122R), and a left lens (122L); a wearing band (20) that supports the body housing (11) and is worn on the head of a user; and a duct (50) that is accommodated inside the body housing (11) and forms a portion of a flow path through which air inside the body housing (11) is discharged to the outside.

Description

head-mounted display

[0001] The present invention relates to a head-mounted display.

[0002] As disclosed in Patent Document 1, a head-mounted display includes a device main body with a built-in display and a band that surrounds the user's head. In a head-mounted display, the temperature inside the device main body may rise due to heat generated by various devices installed inside the device main body. The head-mounted display of Patent Document 1 employs a configuration that suppresses temperature rise inside the device main body by incorporating a fan.

[0003] US Patent Application Publication No. 2018 / 0307282

[0004] Here, in a head mounted display, there is a need for a way to further suppress the temperature rise inside the device body.

[0005] One of the objects of the present specification is to provide a head mounted display that efficiently suppresses a rise in temperature inside the device body.

[0006] An example of a head-mounted display proposed in the present disclosure includes a main body housing that houses at least a display panel and a lens, a wearing band that supports the main body housing and is worn on the user's head, and a duct that is housed within the main body housing and forms part of a flow path that exhausts air from within the main body housing to the outside.

[0007] According to the above-described head mounted display, it is possible to efficiently suppress a rise in temperature inside the device body.

[0008] 1 is a perspective view showing an HMD according to this embodiment in use, the HMD being viewed from diagonally below from the front. FIG. 2 is a perspective view showing an HMD according to this embodiment in use, the HMD being viewed from diagonally above from the front. FIG. 3 is a cross-sectional view schematically showing a cross section of the device body of the HMD according to this embodiment as viewed from the left side. FIG. 4 is a cross-sectional perspective view showing a cross section of the device body of the HMD according to this embodiment as viewed from the left side. FIG. 5 is a rear view of the HMD according to this embodiment as viewed from the rear. FIG. 6 is a rear perspective view of the HMD according to this embodiment as viewed from diagonally behind. FIG. 7 is an exploded perspective view of the duct and the components arranged around the duct as viewed from diagonally behind. FIG. 8 is an exploded perspective view of the duct and the components arranged around the duct as viewed from diagonally behind.

[0009] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following description, the directions indicated by X1 and X2 in the drawings are the right and left, respectively, the directions indicated by Y1 and Y2 in the drawings are the front and rear, respectively, and the directions indicated by Z1 and Z2 in the drawings are the up and down, respectively. These directions indicate the directions as seen by a user wearing a head-mounted display 1. In the following description, the head-mounted display 1 will be referred to as an HMD (Head Mounted Display) 1.

[0010] In each figure, dashed arrows indicate the direction of air flow. In this embodiment, the space formed between the face of a user wearing the HMD 1 and a light-blocking member 30 (sometimes referred to as a light shield), which will be described later, is referred to as a "first space A1." Furthermore, the space inside the main body housing 11 and in front of a support wall 15, which will be described later, is referred to as a "second space A2." The first space A1 is the space outside the HMD 1, and the second space A2 is the space inside the HMD 1 (device main body 10).

[0011] The HMD 1 according to this embodiment employs a configuration in which air remaining in the first space A1 is moved to the second space A2 and then discharged from the second space A2 to the outside of the HMD 1.

[0012] [Overview of the Overall Configuration of the HMD 1] First, an overview of the overall configuration of the HMD 1 according to this embodiment will be described with reference to FIGS. 1 to 6. FIG. 1 is a perspective view showing the HMD according to this embodiment in use, as viewed from a diagonally downward front view. FIG. 2 is a perspective view showing the HMD according to this embodiment in use, as viewed from a diagonally upward front view. FIG. 3 is a schematic cross-sectional view of the device body of the HMD according to this embodiment, as viewed from the left side. FIG. 4 is a cross-sectional perspective view of the device body of the HMD according to this embodiment, as viewed from the left side. FIG. 5 is a rear view of the HMD according to this embodiment, as viewed from the rear. FIG. 6 is a rear perspective view of the HMD according to this embodiment, as viewed from a diagonally upward rear view. Note that the front cover 111 of the main body housing 11 is omitted in FIG. 2. FIGS. 3 and 4 show a cross-section passing through an intake pipe portion 51 of a duct 50, which will be described later. Note that in FIG. 3, only a portion of the cross section is hatched to avoid cluttering the drawing.

[0013] As shown in FIGS. 1 and 2, the HMD 1 includes a device main body 10, a wearing band 20, and a light blocking member 30.

[0014] The device main body 10 has at least a right optical unit 12R, a left optical unit 12L, a display panel 13, and a main body housing 11 that houses them and forms the exterior of the device main body 10. The display panel 13 may be, for example, a liquid crystal display device or an organic electroluminescence display device, but the type is not particularly limited.

[0015] 5 and 6 , the right optical unit 12R includes a right lens 121R that guides image light from the display panel 13 to the user's right eye, and a cylindrical right lens barrel 122R that holds the right lens 121R. Similarly, the left optical unit 12L includes a left lens 121L that guides image light from the display panel 13 to the user's left eye, and a cylindrical left lens barrel 122L that holds the left lens 121L. The right optical unit 12R and the left optical unit 12L are disposed behind the display panel 13.

[0016] Furthermore, the right and left lens barrels 122R and 122L, which are movable members, may be supported so as to be movable relative to the main body housing 11. For example, the right and left lens barrels 122R and 122L may be supported by the main body housing 11 so as to be movable left and right. This allows the user to adjust the distance between the right and left lenses 121R and 121L in the left-right direction according to the distance between their own left and right eyes.

[0017] The wearing band 20 extends rearward from the device 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 head H is preferably placed inside the wearing band 20. The wearing band 20 has a forehead support portion 211 and a support portion 212 at its front.

[0018] When the HMD 1 is used, the forehead support portion 211 is placed against the front of the user's head H. A cushion may be provided on the inner surface (rear surface) of the forehead support portion 211. The inner surface (rear surface) of the forehead support portion 211 may also be curved to fit the front of the head H.

[0019] The support portion 212 supports the upper portion of the main body housing 11. The support portion 212 preferably supports the main body housing 11 so as to be movable forward and backward. In other words, the support portion 212, which is a movable member, is preferably provided on the main body housing 11 so as to be movable forward and backward relative to the main body housing 11. The support portion 212 is preferably fitted to a guide rail 11GL (see FIG. 7 described later) provided on the upper portion of the main body housing 11 so as to be slidable in the forward and backward directions. This configuration allows the user to adjust the position of the device main body 10 in the forward and backward directions while wearing the HMD 1 on their head H. This allows the user to adjust the distance (also called eye relief) between their eyes and the right lens 121R and the left lens 121L. The guide rail 11GL is preferably fixed and built into the main body housing 11 so as not to be visible on the exterior.

[0020] The light blocking member 30 is a member provided to block or reduce external light incident on the eyes of a user wearing the HMD 1. The light blocking member 30 is provided at the rear of the main body housing 11, and is preferably annular in shape surrounding the right lens 121R and the left lens 121L when viewed from behind. When using the HMD 1, the device main body 10 covers the area in front of the user's eyes, allowing the user to experience a highly immersive experience.

[0021] The light-blocking member 30 is preferably made of an elastic resin. However, the light-blocking member 30 is not limited to being made of resin, and may be made of, for example, a fibrous material (such as a sponge). The light-blocking member 30 may be configured to be detachable from the main body housing 11, or may be formed and fixed to the main body housing 11 by two-color molding or insert molding.

[0022] The light blocking member 30 includes, at its lower portion, a nose accommodation portion 35 that accommodates the nose of a user wearing the HMD 1. The nose accommodation portion 35 is a part of the light blocking member 30, and is a portion that forms a space that accommodates the nose of a user wearing the HMD 1. In addition, as shown in Fig. 1 etc., a recess 11b that is recessed forward may be formed at the lower portion of the main body housing 11 so as to form part of the space that accommodates the user's nose.

[0023] 5 and 6 , the nose accommodation portion 35 includes a right light-shielding piece 35R that contacts the right side of the user's nose and a left light-shielding piece 35L that contacts the left side of the user's nose. When wearing the HMD 1, the nose of the user is accommodated in the space formed by the nose accommodation portion 35 via a slit between the right light-shielding piece 35R and the left light-shielding piece 35L. This configuration can prevent external light from entering the user's eyes through the gap between the user's nose and the light-shielding member 30.

[0024] [Internal Structure of Device Main Body 10] The internal structure of device main body 10 will be described below with reference to Figures 3, 4, 7, and 8. Figure 7 is an exploded perspective view of the duct and the components arranged around the duct, viewed obliquely from the front. Figure 8 is an exploded perspective view of the duct and the components arranged around the duct, viewed obliquely from the rear. Note that Figure 7 shows guide rails 11GL fixed to the main body housing 11 to explain why duct 50 has a bifurcated shape.

[0025] The device main body 10 further includes a circuit board 14, a support wall 15, a duct 50, a heat sink 60, and a blower 70. All of these are housed within the main body housing 11.

[0026] At least one electronic component is mounted on the circuit board 14. Hereinafter, the surface of the circuit board 14 on which the integrated circuit 140 is mounted will be referred to as the mounting surface 141. In this embodiment, the circuit board 14 is supported by the support wall 15 so that the mounting surface 141 faces forward when the HMD 1 is in use. Note that the number and arrangement of electronic components mounted on the mounting surface 141 are not limited to those shown in FIG. 7 .

[0027] The support wall 15 is a wall that separates a first space A1, which includes a space in which the right lens 121R and the left lens 121L are disposed, from a second space A2 in which the duct 50 is disposed. The support wall 15 preferably supports the circuit board 14 at its front portion and the display panel 13 at its rear portion. The circuit board 14 and the display panel 13 may be fixed to the support wall 15 directly or indirectly via other members.

[0028] The outer shape of the support wall 15 is preferably larger than the outer shape of the circuit board 14. In other words, the support wall 15 is preferably shaped to include a plate-like portion having a predetermined width in the front-rear and left-right directions.

[0029] The duct 50 is a member that constitutes part of a flow path that discharges air inside the main body housing 11 to the outside. The duct 50 is disposed in front of the circuit board 14. The duct 50 has a bifurcated shape that includes one air intake port and two exhaust ports. Specifically, the duct 50 has a shape that includes an air intake pipe section 51 in which the air intake port 51a is formed, a right exhaust pipe section 52R in which the right exhaust port 52aR is formed, and a left exhaust pipe section 52L in which the left exhaust port 52aL is formed.

[0030] The intake pipe 51 has a cylindrical shape with a flow path formed therein through which air passes. The intake port 51a is formed in the lower part of the intake pipe 51.

[0031] The right exhaust pipe 52R is tubular with an internal flow path for air to pass through, and is connected to the intake pipe 51 so as to extend diagonally upward to the right of the intake pipe 51. The right exhaust port 52aR is formed in the upper part of the right exhaust pipe 52R. As shown in FIG. 7 and other figures, a plurality of fins may be arranged inside the right exhaust port 52aR.

[0032] The left exhaust pipe 52L is tubular with an internal flow path for air to pass through, and is connected to the intake pipe 51 so as to extend diagonally upward to the left of the intake pipe 51. The left exhaust port 52aL is formed in the upper part of the left exhaust pipe 52L. As shown in FIG. 7 and other figures, a plurality of fins may be arranged inside the left exhaust port 52aL.

[0033] 2, second through holes, a right through hole 112R and a left through hole 112L, are formed in the upper portion of the main body housing 11. The right through hole 112R and the left through hole 112L are formed so as to avoid the guide rail 11GL. In this embodiment, the guide rail 11GL is provided at approximately the center of the main body housing 11 in the left-right direction. The right through hole 112R is formed to the right of the center of the main body housing 11 in the left-right direction and opens forward. The left through hole 112L is formed to the left of the center of the main body housing 11 in the left-right direction and opens forward.

[0034] The right exhaust pipe portion 52R of the duct 50 extends toward the right through-hole 112R. The left exhaust pipe portion 52L of the duct 50 extends toward the left through-hole 112L.

[0035] 3 and 8, an opening 51b is formed in at least a portion of the rear of the intake pipe portion 51 of the duct 50. A heat sink 60 is provided to fit into this opening 51b. The heat sink 60 has a plate portion 61 that is fastened to the support wall 15 via the circuit board 14 with fasteners such as screws, and a plurality of heat dissipation fins 62 that protrude from the plate portion 61 in a direction away from the circuit board 14.

[0036] The heat sink 60 is disposed so as to radiate heat generated by electronic components mounted on the circuit board 14. The heat sink 60 is preferably disposed so as to radiate heat from the integrated circuit 140, which is particularly prone to heat generation. The heat sink 60 is also disposed on the air flow path within the duct 50.

[0037] A blower 70 is fitted in the air intake port 51a. The blower 70 is arranged to suck in air stagnating in the second space A2 and send the air through the duct 50 toward the right exhaust port 52aR and the left exhaust port 52aL.

[0038] As shown in FIG. 3 , the blower 70 includes a rotatable shaft 71, blades 72 protruding radially outward from the shaft 71, and a housing 73 that accommodates the shaft 71 and blades 72. The blower 70 is a so-called axial flow fan that blows air from one side to the other in the direction in which the axis x1 of the shaft 71 extends. Axial flow fans can be lighter and produce a larger air volume than so-called blower fans, which draw air from the side of the fan and blow it forward. The blower 70 may be driven by being electrically connected to a predetermined electronic component mounted on the circuit board 14.

[0039] 3, the blower 70 is disposed so that the axis x1 of the shaft portion 71 is inclined with respect to the mounting surface 141 of the circuit board 14. In other words, the blower 70 is disposed so that the axis x1 of the shaft portion 71 is inclined with respect to the optical axis x2 of the right lens 121R and the left lens 121L in a side view.

[0040] The blower 70 is positioned to blow air toward the heat sink 60. That is, as shown in FIG. 3 , the heat sink 60 is positioned on an extension of the blowing direction of the blower 70. Also, as shown in FIG. 3 and other figures, the heat dissipation fins 62 of the heat sink 60 preferably include an inclined portion 62a inclined in the same direction as the inclination of the housing 73 of the blower 70. By adopting such a shape, the blower 70 can be positioned closer to the heat sink 60. This allows for efficient use of space and allows for the use of a relatively large blower 70, thereby increasing the air volume. As a result, the heat dissipation effect of the heat sink 60 can be improved. Furthermore, the space between the blower 70 and the front cover 111 can be increased. This allows the blower 70 to efficiently take in air.

[0041] [Air Flow] Next, the air flow in the HMD 1 will be described with reference to the respective drawings.

[0042] Air outside the HMD 1 enters the first space A1 through the gap between the user's face and the light-blocking member 30. In particular, as shown in Figures 1, 5, and 6, air outside the HMD 1 enters the first space A1 through the nose housing 35, which opens downward. The air flow at this time is indicated by dashed arrows F1.

[0043] The flow path of air entering the first space A1 from the outside is not limited to that shown by the dashed arrow F1. For example, air may enter the first space A1 from the outside through a notch formed in the light-blocking member 30. For example, as shown in FIG. 5 etc., air may enter the first space A1 from the outside through notches CR and CL formed to prevent interference with the temples of the glasses when the user is wearing the glasses.

[0044] At least a portion of the air that has entered first space A1 enters device body 10 through the gap between right barrel 122R, which holds right lens 121R, and main body housing 11, and the gap between left barrel 122L, which holds left lens 121L, and main body housing 11. The air flow at this time is indicated by dashed arrows F2 (see FIG. 5, etc.).

[0045] As described above, the right and left barrels 122R and 122L are attached to the main body housing 11 so as to be movable relative to the main body housing 11. The size and position of the gap between them change depending on the relative positions of the right and left barrels 122R and 122L with respect to the main body housing 11. For example, when the right and left barrels 122R and 122L are positioned toward the center, the gap formed on the right side of the right barrel 122R becomes larger, and the gap formed on the left side of the left barrel 122L becomes larger. Air in the first space A1 enters the device body 10 through these relatively large gaps.

[0046] Note that air entering the device body 10 from the outside is not limited to the gap between the body housing 11 and the lens barrel that supports the lens. For example, air may enter the device body 10 through the gap between the body housing 11 and the support portion 212 of the attachment band 20, which is provided so as to be movable relative to the body housing 11. In this way, air can enter the device body 10 from multiple locations, thereby further improving air circulation.

[0047] Furthermore, at least a portion of the air that has entered the device body 10 moves to the second space A2 through the through holes formed in the support wall 15. In particular, the air that has entered the device body 10 moves to the second space A2 through the right through hole 151R, which is the first through hole of the support wall 15 through which the flexible circuit board 145R is inserted, and the left through hole 151L, which is the first through hole through which the flexible circuit board 145L is inserted.

[0048] As shown in Figure 7 and other figures, the right through-hole 151R is a vertically elongated hole formed in the right part of the support wall 15, and the left through-hole 151L is a vertically elongated hole formed in the left part of the support wall 15. The right through-hole 151R is formed to the right of the right edge of the circuit board 14. The left through-hole 151L is formed to the left of the left edge of the circuit board 14. In other words, the right through-hole 151R and the left through-hole 151L penetrate from the rear to the front. The left-right width of the right through-hole 151R is wider than the thickness of the flexible circuit board 145R, and the left-right width of the left through-hole 151L is wider than the thickness of the flexible circuit board 145L.

[0049] 2, the flexible circuit board 145R extends from the rear of the support wall 15 to the front of the support wall 15 through the right through-hole 151R and is electrically connected to predetermined electronic components mounted on the circuit board 14. Similarly, the flexible circuit board 145L extends from the rear of the support wall 15 to the front of the support wall 15 through the left through-hole 151L and is electrically connected to predetermined electronic components mounted on the circuit board 14.

[0050] In addition, the air in the first space A1 may enter the second space A2 not only through the right through-hole 151R and the left through-hole 151L, but also through other through-holes formed in the support wall 15 or through the gap between the outer edge of the support wall 15 and the main body housing 11.

[0051] At least a portion of the air that has entered the second space A2 moves from the air intake 51 a of the duct 50 into the duct 50 as the blower 70 is driven. The flow of air that enters the second space A2 from the first space A1 and then moves into the duct 50 is indicated by dashed arrow F3 (see FIG. 2 ).

[0052] The air that moves into the duct 50 travels through the right exhaust pipe 52R or the left exhaust pipe 52L via the intake pipe 51 and is discharged to the outside of the duct 50 from the right exhaust port 52aR or the left exhaust port 52aL. The air discharged to the outside of the duct 50 from the right exhaust port 52aR is discharged to the outside of the device body 10 through the right through-hole 112R of the main body housing 11. Similarly, the air discharged to the outside of the duct 50 from the left exhaust port 52aL is discharged to the outside of the device body 10 through the left through-hole 112L of the main body housing 11. Because heat moves upward, heated air can be efficiently discharged through the right through-hole 112R and the left through-hole 112L formed in the upper part of the main body housing 11. The air flow at this time is indicated by dashed arrow F4 (see FIG. 2, etc.).

[0053] [Summary] In the HMD 1 according to the present embodiment described above, air that has entered the first space A1 and remains in the first space A1 can be moved into the device main body 10. In particular, in the HMD 1, the blower 70 is housed in the main body housing 11, and by driving the blower 70, outside air can be actively drawn into the device main body 10. As a result, ventilation performance is improved, and the user can use the HMD 1 comfortably even when humidity is high due to the user's sweating, etc.

[0054] Furthermore, by dissipating heat from the electronic components mounted on the circuit board 14 through the heat dissipation fins 62 of the heat sink 60 and blowing air toward the circuit board 14 and the heat sink 60 using the fan 70, it is possible to suppress a rise in temperature of the electronic components. Furthermore, since the duct 50 forms a flow path for discharging air from the main body housing 11 to the outside, the air inside the main body housing 11 can be efficiently discharged to the outside. Furthermore, since the duct 50 forms an air flow path, it is possible to circulate air within the device main body 10. Therefore, it is possible to more efficiently suppress a rise in temperature of the electronic components. As a result, it is possible to efficiently suppress a rise in temperature inside the device main body 10.

[0055] [Others] In the present embodiment, the heat sink 60 is used to release heat from the electronic components, but the present invention is not limited to this, and the heat sink 60 may not be provided.

[0056] In addition, in the present embodiment, an example has been shown in which the duct 50 and the blower 70 are configured as an integrated unit, but the present invention is not limited to this, and the duct 50 and the blower 70 may be separate bodies and disposed apart from each other. The blower 70 is not essential, and it is sufficient that a flow path capable of discharging air to the outside of the main body housing 11 is formed.

[0057] Furthermore, the duct 50 may not be provided, and the air in the second space A2 may be discharged to the outside of the main body housing 11 by driving the blower 70. In this case, the blower 70 may be fixed to the inner wall of the main body housing 11, for example. Even with this configuration, the air in the first space A1 where the user's face is placed can be sent to the second space A2 and discharged from the second space A2 to the outside of the main body housing 11. As a result, ventilation performance can be improved, and the user can use the HMD 1 comfortably.

[0058] In this embodiment, an example has been described in which the heat source is an electronic component mounted on the circuit board 14, but other electronic components that are heat sources may be built into the device main body 10. In this embodiment, a configuration is adopted in which air is circulated within the main body housing 11, so that temperature rise can be suppressed even in electronic components other than those that directly receive air from the blower 70.

Claims

1. a main body housing that accommodates at least a display panel and a lens; a wearing band that supports the main body housing and is worn on the user's head; a duct that is accommodated in the main body housing and that constitutes a part of a flow path that discharges air from the main body housing to the outside; a blower accommodated in the main body housing and configured to exhaust air from the main body housing to the outside of the main body housing through the duct; one or more movable members provided on the main body housing so as to be movable relative to the main body housing; and The blower is disposed so as to discharge air that has entered the main body housing from the outside through a gap between the main body housing and the movable member to the outside of the main body housing through the duct. Head-mounted display.

2. The device further includes a circuit board accommodated in the main body housing and on which electronic components are mounted, The blower is arranged to blow air toward the electronic components. The head-mounted display according to claim 1 .

3. A main body housing that accommodates at least a display panel and a lens; a wearing band that supports the main body housing and is worn on the user's head; a duct that is accommodated in the main body housing and that constitutes a part of a flow path that discharges air from the main body housing to the outside; a blower accommodated in the main body housing and configured to exhaust air from the main body housing to the outside of the main body housing through the duct; a circuit board accommodated in the main body housing and on which electronic components are mounted; and The blower includes a rotatable shaft portion and a blade portion extending from the shaft portion, and is disposed so that an axis of the shaft portion extends downward as it goes forward and is inclined with respect to the circuit board. Head-mounted display.

4. A main body housing that accommodates at least a display panel and a lens; a wearing band that supports the main body housing and is worn on the user's head; a duct that is accommodated in the main body housing and that constitutes a part of a flow path that discharges air from the main body housing to the outside; a blower accommodated in the main body housing and configured to exhaust air from the main body housing to the outside of the main body housing through the duct; a circuit board accommodated in the main body housing and on which electronic components are mounted; and a heat sink for dissipating heat generated by the electronic component; The circuit board is arranged so that the mounting surface faces forward, The fan is arranged to blow air toward the heat sink. Head-mounted display.

5. The heat sink is disposed on the flow path of the duct. The head-mounted display according to claim 4 .

6. The blower is disposed within the intake of the duct. The head-mounted display according to any one of claims 1 to 5.

7. the one or more movable members are part of the attachment band and include a support portion connected to an upper portion of the main body housing and supporting the main body housing; The head-mounted display according to claim 1 .

8. the one or more movable members include a lens barrel that holds the lens; The head-mounted display according to claim 1 or 7.

9. A main body housing that accommodates at least a display panel and a lens; a wearing band that supports the main body housing and is worn on the user's head; a duct that is accommodated in the main body housing and that constitutes a part of a flow path that discharges air from the main body housing to the outside; and a support wall that partitions a first space including a space in which the lens is disposed and a second space in which the duct is disposed, The support wall has a first through hole formed therein, the first through hole serving as a flow path for air flowing from the first space to the second space. Head-mounted display.

10. a flexible circuit board that is inserted into the first through hole and electrically connected to a predetermined electronic component mounted on the circuit board; The head-mounted display according to claim 9.

11. A main body housing that accommodates at least a display panel and a lens; a wearing band that supports the main body housing and is worn on the user's head; a duct that is accommodated in the main body housing and that constitutes a part of a flow path that discharges air from the main body housing to the outside; and A second through hole opening forward is formed in the upper portion of the main body housing, The duct includes a portion extending toward the second through hole. Head-mounted display.

12. the mounting band includes a support portion that is connected to an upper portion of the main housing to support the main housing; a second right through-hole and a second left through-hole located on the opposite side of the support portion from the first opening are formed in an upper portion of the main body housing; the duct includes a right exhaust pipe portion extending toward the second right through-hole and a left exhaust pipe portion extending toward the second left through-hole. The head-mounted display according to claim 11.