A head-mounted display device

Abstract

The application provides a head-mounted display device, which comprises a front-end assembly, a rear-end assembly, a main board, a speaker and two side connecting bands, the side connecting bands are connected between the front-end assembly and the rear-end assembly; the main board is electrically connected with the speaker; when worn, the front-end assembly is located at the front of the wearer's head, the rear-end assembly is located at the back of the wearer's head, and the two side connecting bands are symmetrically distributed on the left and right sides of the wearer's head; a sound emitting assembly is oppositely arranged on each of the two side connecting bands near the front-end assembly, the sound emitting assembly further comprises a framework and an outer cover, the framework has a protruding part protruding inward and a containing groove with the protruding part as a wall, the outer cover is buckled on the outer side of the framework to form a containing cavity at the containing groove, the speaker is located in the containing cavity, and the protruding part has a sound hole to allow the sound emitted by the speaker to be released from the containing cavity. Since the volume of the containing cavity is large, the low-frequency sound quality of the head-mounted display device can be improved.

Description

Technical Field

[0001] This application relates to the field of virtual reality device technology, and more particularly to a head-mounted display device. Background Technology

[0002] "Virtual Reality" is derived from the English "Virtual Reality," abbreviated as VR technology. Virtual Reality (VI) technology is a comprehensive technology that integrates computer technology, sensor technology, human psychology, and physiology. It uses computer simulation systems to simulate the external environment, mainly simulating the environment, skills, sensing devices, and perception, providing users with a multi-information, three-dimensional dynamic, and interactive simulation experience.

[0003] VR headsets utilize head-mounted display devices to block out a person's vision and hearing from the outside world, guiding the user to experience a feeling of being in a virtual environment. Their display principle involves the left and right eye screens displaying images for the left and right eyes respectively; the human eye receives this differentiated information and generates a sense of depth in the brain. As a crucial access medium for virtual reality, VR headsets play a vital role in virtual reality and mixed reality technologies.

[0004] In the prior art, the audio system of a head-mounted display device includes a speaker (i.e., a loudspeaker). Typically, a cavity is provided on a rigid headband. When the user wears the device, the cavity is close to the user's ear. The side of the cavity is provided with a mesh dustproof hole. The sound emitted by the device is amplified by the loudspeaker and then transmitted to the user's ear through the dustproof hole.

[0005] However, the existing structure can only make the speaker produce sound, but the sound quality is poor. Summary of the Invention

[0006] This application provides a head-mounted display device to at least partially solve the above-mentioned problems.

[0007] According to an embodiment of this application, a head-mounted display device is provided, including a front-end component, a rear-end component, a motherboard, a speaker, and two side connecting straps. The side connecting straps are connected between the front-end component and the rear-end component. The motherboard is located in the front-end component or the rear-end component and is electrically connected to the speaker. When worn, the front-end component is located in front of the wearer's head, the rear-end component is located behind the wearer's head, and the two side connecting straps are symmetrically distributed on the left and right sides of the wearer's head. Each of the two side connecting straps has a sound-emitting component facing each other near the front-end component. The sound-emitting component further includes an inner cover and an outer cover. The inner cover has an inwardly protruding convex portion and a receiving groove with the convex portion as a wall. The outer cover is fastened to the outside of the inner cover to form a receiving cavity at the receiving groove. The speaker is located in the receiving cavity, and the convex portion has a sound passage hole to allow the sound emitted by the speaker to be released from the receiving cavity.

[0008] Optionally, the volume of the receiving cavity is 3000 cubic millimeters.

[0009] Optionally, the receiving cavity has a length of 102 mm, a width of 20 mm, and a thickness of 3 mm.

[0010] Optionally, the wall thickness of the protrusion is 1.5mm-2.0mm.

[0011] Optionally, when worn, the protrusion is located in front of the wearer's ear.

[0012] Optionally, the side connecting strip further includes a bracket located in the receiving cavity and fixed to the interior cover, the speaker being mounted on the bracket, and the speaker's horn being located in the receiving groove and facing the protrusion.

[0013] Optionally, the connecting strip also includes fasteners, and the front and rear ends of the bracket are provided with connecting holes, through which the fasteners pass and are connected to the interior cover.

[0014] Optionally, the bracket has a mounting through hole, and the speaker is fitted into the mounting through hole in a shape-adaptive manner.

[0015] Optionally, the interior trim cover further includes a front connecting portion and a rear connecting portion located on the front and rear sides of the protrusion, respectively. A front receiving channel is formed between the front connecting portion and the exterior trim cover, and the rear connecting portion and the exterior trim cover are sealed together. The main board is located in the front-end assembly, and the head-mounted display device further includes a wire connected between the main board and the speaker. The wire is located in the front receiving channel, and multiple pairs of protrusions are provided on the inner surface of the interior trim cover. The wire is inserted into the gap between two protrusions in each pair of protrusions.

[0016] Optionally, the connecting strip further includes a dustproof net, which is adhered to the inner surface of the protrusion and covers the sound-passing hole.

[0017] Optionally, the head-mounted display device further includes a power amplifier, which is electrically connected to both the motherboard and the speaker. Electrical signals emitted by the motherboard are transmitted to the speaker via the power amplifier.

[0018] Beneficial effects:

[0019] By adopting the above technical solution, since the convex part of the interior cover faces inward and the receiving groove corresponds to the convex part, when the exterior cover is fastened to the outside of the interior cover, the exterior cover and the receiving groove together form a receiving cavity. The receiving groove is part of the receiving cavity, and the thickness of the receiving cavity is greater than the thickness of the side connecting strip. Such a receiving cavity has a large volume. Since the speaker is located in this receiving cavity, based on the rule that within a certain range, the larger the receiving cavity, the better the low-frequency sound quality, the speaker can improve the low-frequency sound quality of the head-mounted display device after being located in such a receiving cavity with a large volume. Attached Figure Description

[0020] The accompanying drawings are intended only to illustrate and explain this application and do not limit the scope of this application.

[0021] Figure 1 A schematic diagram illustrating the wearing of a head-mounted display device provided in this application embodiment.

[0022] Figure 2 This is a schematic diagram of a head-mounted display device worn on the head, as provided in an embodiment of this application.

[0023] Figure 3 This is another perspective view of a side connecting strip of a head-mounted display device provided in an embodiment of this application, wherein the side cover is omitted.

[0024] Figure 4 A perspective view of the side connecting strip of a head-mounted display device provided in an embodiment of this application.

[0025] Figure 5 This is an exploded view of the exterior cover, interior cover, and bracket of a head-mounted display device provided in an embodiment of this application.

[0026] Figure 6 This is a schematic diagram of the relationship between the motherboard, power amplifier, and speaker in a head-mounted display device provided in an embodiment of this application.

[0027] Explanation of reference numerals in the attached figures:

[0028] 10 - Front-end components, 20 - Back-end components, 30 - Speakers;

[0029] 40-Interior cover, 41-Protrusion, 410-Sound passage hole, 42-Front connecting part, 43-Rear connecting part, 44-Protruding post;

[0030] 50 - Exterior cover; 60 - Bracket; 61 - Connection hole; 70 - Wire. Detailed Implementation

[0031] To provide a clearer understanding of the technical features, objectives, and effects of the embodiments of this application, the specific implementation methods of the embodiments of this application will now be described with reference to the accompanying drawings.

[0032] In this document, “illustrative” means “serving as an example, illustration or description”, and any illustration or implementation described herein as “illustrative” should not be construed as a more preferred or advantageous technical solution.

[0033] To keep the drawings concise, each drawing only schematically shows the parts relevant to this application, and they do not represent the actual structure of the product. Furthermore, to make the drawings concise and easy to understand, in some drawings, components with the same structure or function are only schematically shown as one or more, or only one or more are labeled.

[0034] To address the problems mentioned in the background art, this application provides a head-mounted display device, with reference to... Figures 1 to 3 The head-mounted display device includes a front-end component 10, a rear-end component 20, a motherboard, a speaker 30, and two side connecting straps. The side connecting straps connect the front-end component 10 and the rear-end component 20. The motherboard is located in either the front-end component 10 or the rear-end component 20 and is electrically connected to the speaker 30. When worn, the front-end component 10 is located in front of the wearer's head, the rear-end component 20 is located behind the wearer's head, and the two side connecting straps are symmetrically distributed on the left and right sides of the wearer's head. Each of the two side connecting straps has a sound-emitting component facing each other near the front-end component. The sound-emitting component further includes an interior cover 40 and an exterior cover 50. The interior cover 40 has an inwardly protruding protrusion 41 and a receiving groove with the protrusion 41 as a wall. The exterior cover 50 is fastened to the outside of the interior cover 40 to form a receiving cavity at the receiving groove. The speaker 30 is located in the receiving cavity. The protrusion 41 has a sound passage 410 to allow the sound emitted by the speaker 30 to be released from the receiving cavity. That is, the sound-generating components on the two side connecting straps are symmetrically distributed, and when worn, the sound-generating components are located on the left and right sides of the wearer's head. A speaker 30 is installed in the sound-generating component, and the sound emitted by the speaker 30 is released from the sound passage hole 410 on the sound-generating component.

[0035] It should be noted that the terms "inner" and "outer" in this application refer to the overall head-mounted display device. The inner cover 40 is located inside the outer cover 50; the protrusion 41 is located on the side of the inner cover 40 facing away from the outer cover 50, that is, the protrusion 41 protrudes towards the inner side of the head-mounted display device. The "main board" in this application can be understood as the circuit board, controller, or central processing unit of the head-mounted display device. When sound needs to be emitted, the main board can transmit the corresponding electrical signals to the speaker 30.

[0036] With the above technical solution, the front-end component 10 is used to present virtual reality images to the wearer's eyes, and the back-end component 20 is located at the back of the wearer's head, on which an adjustment structure can be installed to adjust the length of the side connecting strap. The motherboard can send electrical signals to the speaker 30, which can convert the electrical signals into sound signals to emit sound. This sound can pass through the sound passage hole 410 on the protrusion 41 and propagate towards the inside of the head-mounted display device. When worn, the wearer's head is located on the head-mounted reality device, so the sound can be transmitted to the wearer's ears.

[0037] Since the protrusion 41 of the interior cover 40 faces inward and the receiving groove corresponds to the protrusion 41, when the exterior cover 50 is fastened to the outside of the interior cover 40, the exterior cover 50 and the receiving groove together form a receiving cavity. The receiving groove is part of the receiving cavity, and the thickness of the receiving cavity is greater than the thickness of the side connecting strip. Such a receiving cavity has a large volume. Since the speaker 30 is located in this receiving cavity, within a certain range, the larger the receiving cavity, the better the low-frequency sound quality. Therefore, after the speaker 30 is located in such a receiving cavity with a large volume, the low-frequency sound quality of the head-mounted display device can be improved.

[0038] Optionally, the volume of the receiving cavity can be 3000 cubic millimeters.

[0039] Optionally, the cavity can be 102mm in length, 20mm in width, and 3mm in thickness.

[0040] Optionally, the wall thickness of the protrusion 41 can be 1.5mm-2.0mm. This is to maximize the volume of the receiving groove while ensuring structural strength, thus increasing the volume of the receiving cavity. The wall thickness of the protrusion 41 can be 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, or 2.0mm.

[0041] In one possible embodiment, reference Figure 2 When worn, the protrusion 41 is positioned in front of the wearer's ear. This prevents the protrusion 41 from pressing against the ear. When worn, it is located at the rear connection part 43 of the connecting strap on the side opposite the ear.

[0042] In one possible embodiment, reference Figure 3 The side connecting strip also includes a bracket 60, which is located in the receiving cavity and fixed to the interior cover 40. A speaker 30 is mounted on the bracket 60, with its horn located in the receiving groove and facing the protrusion 41. The sound emitted by the speaker 30 enters directly into the receiving groove and is released through the through hole on the protrusion 41. The bracket 60 serves to fix the position of the speaker 30.

[0043] Optionally, the connecting strip also includes fasteners. Both the front and rear ends of the bracket 60 are provided with connecting holes 61, through which the fasteners pass and connect to the interior trim cover 40. That is, the bracket 60 is fixed to the receiving groove of the interior trim cover 40 by the fasteners. The bracket 60 can be located inside the receiving groove or at the opening of the receiving groove, so as to fix the speaker 30 in the receiving cavity.

[0044] Optionally, the bracket 60 has a mounting through hole, and the speaker 30 is fitted into the mounting through hole in a suitable shape. This allows the speaker 30 to be easily and securely fixed to the bracket 60. The horn of the speaker 30 can be located in the space between the bracket 60 and the protrusion 41, i.e., in the receiving groove, while the back of the speaker 30 is located between the bracket 60 and the outer cover 50. Specifically, the speaker 30 can be an electrically driven cone speaker 30, including a driver unit, a frame, and a cone. The driver unit and the cone are respectively mounted on both sides of the frame. The cone serves as the horn. The driver unit is located between the bracket 60 and the outer cover 50 and is connected to the main board via a conductor located in the front or rear receiving channel. The frame is fitted into the mounting through hole in a suitable shape, and the frame includes a connecting flange, which is fixedly connected to the bracket 60.

[0045] In one possible embodiment, reference Figure 4 and Figure 5 The interior cover 40 also includes a front connecting portion 42 and a rear connecting portion 43 located on the front and rear sides of the protrusion 41, respectively. A front receiving channel is formed between the front connecting portion 42 and the exterior cover 50, and the rear connecting portion 43 is sealed to the exterior cover 50, thus sealing the side of the receiving cavity near the rear connecting portion 43. The main board is located in the front-end assembly 10. The head-mounted display device also includes a wire 70 connecting the main board and the speaker 30. The wire 70 is located in the front receiving channel. Multiple pairs of protrusions 44 are provided on the inner surface of the interior cover 40, and the wire 70 is inserted into the gap between two protrusions 44 in each pair. In this way, the wire 70 can transmit the electrical signals of the main board to the speaker 30.

[0046] The front receiving channel and the receiving cavity can be connected, or they can be sealed and separated by accessories such as sealing gaskets, so that the volume released by the speaker 30 is only in the receiving cavity, ensuring that enough volume is released from the sound passage 410, while achieving high low-frequency sound quality. At this time, since the wire 70 enters the receiving cavity from the front receiving channel, the wire 70 can be tightly fitted with the sealing gasket, thereby achieving the purpose of sealing and separating the front receiving channel and the receiving cavity.

[0047] Specifically, the side connecting strip is thinner at the front connecting part 42 and the outer cover 50, and thicker at the receiving cavity. The connection between the protrusion 41 and the front connecting part 42 has a chamfer, and the connection between the protrusion 41 and the rear connecting part 43 has a chamfer. In other words, the transition connection structure between the protrusion 41 and the front connecting part 42 and the rear connecting part 43 is a sloping plate.

[0048] In one possible embodiment, the connecting strip further includes a dustproof mesh adhered to the inner surface of the protrusion 41, covering the sound passage hole 410. The dustproof mesh has smaller diameter dustproof holes, which can prevent external debris from entering the receiving cavity through the sound passage hole 410, protecting the speaker 30 in the receiving cavity, while the sound emitted by the speaker 30 can be transmitted through the dustproof holes of the dustproof mesh.

[0049] In one possible embodiment, reference Figure 6 It also includes a power amplifier, which is electrically connected to both the motherboard and the speaker 30. Electrical signals from the motherboard are transmitted to the speaker 30 via the power amplifier. For example... Figure 6 This illustrates the operational relationship between the motherboard, power amplifier, and speaker 30.

[0050] The motherboard parses the audio files from the game or video to obtain electrical signals. These signals have insufficient power, meaning they are not powerful enough to drive the speaker 30 to produce sound. Therefore, a power amplifier is needed. The power amplifier amplifies the electrical signals from the motherboard, increasing their driving capability. Specifically, the power amplifier is directly connected to the speaker 30, amplifying the received electrical signals and outputting them to the speaker 30, which then produces sound.

[0051] There are many types of power amplifiers and speakers 30, resulting in various combinations. To ensure optimal performance when paired together, the power amplifier needs to be optimized for the speaker 30. For example, even if the motherboard sends the same electrical signal, the sound quality will differ depending on the speaker 30, as different speakers 30 have different DC impedances, parasitic inductances, and other parameters. To ensure consistent sound quality at the speaker 30, the power amplifier parameters must be manually altered by adding an additional signal to the original electrical signal; this process is called optimization.

[0052] The above are merely illustrative embodiments of this application and are not intended to limit the scope of the embodiments of this application. Any equivalent changes, modifications, and combinations made by those skilled in the art without departing from the concept and principles of the embodiments of this application should fall within the protection scope of the embodiments of this application.

[0053] It should be understood that although this specification describes various embodiments, not every embodiment contains only one independent technical solution. This descriptive method is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0054] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

Claims

1. A head-mounted display device, characterized in that, Includes a front-end component (10), a back-end component (20), a motherboard, a speaker (30), and two side connecting strips. The side connecting strip connects the front end component (10) and the rear end component (20); When worn, the front end component (10) is located at the front of the wearer's head, the rear end component (20) is located at the back of the wearer's head, and the two side connecting straps are symmetrically distributed on the left and right sides of the wearer's head; wherein, On the two side connecting strips, a sound-emitting component is respectively provided facing each other near the front end component. The sound-emitting component further includes an interior cover (40) and an exterior cover (50). The interior cover (40) has an inwardly protruding protrusion (41) and a receiving groove with the protrusion (41) as a wall. The exterior cover (50) is fastened to the outside of the interior cover (40) to form a receiving cavity at the receiving groove. The speaker (30) is located in the receiving cavity. The protrusion (41) has a sound passage hole (410) to allow the sound emitted by the speaker (30) to be released from the receiving cavity. The horn of the speaker (30) is located in the receiving groove and faces the protrusion (41), which is located in front of the wearer's ear when worn; The interior cover (40) also includes a front connecting portion (42) and a rear connecting portion (43) located on the front and rear sides of the protrusion (41), respectively. A front receiving channel is formed between the front connecting portion (42) and the exterior cover (50), and the rear connecting portion (43) and the exterior cover (50) are sealed together. The motherboard is located in the front-end assembly (10), and the head-mounted display device also includes a wire (70) connecting the motherboard and the speaker (30), the wire (70) being located in the front receiving channel; The head-mounted display device also includes a sealing fitting disposed between the front receiving channel and the receiving cavity, and in close contact with the wire (70) to seal and separate the front receiving channel and the receiving cavity.

2. The head-mounted display device according to claim 1, characterized in that, The volume of the receiving cavity is 3000 cubic millimeters.

3. The head-mounted display device according to claim 1, characterized in that, The cavity is 102mm long, 20mm wide, and 3mm thick.

4. The head-mounted display device according to claim 1, characterized in that, The wall thickness of the protrusion (41) is 1.5mm-2.0mm.

5. The head-mounted display device according to claim 1, characterized in that, The side connecting strip also includes a bracket (60) located in the receiving cavity and fixed on the interior cover (40), and the speaker (30) is mounted on the bracket (60).

6. The head-mounted display device according to claim 5, characterized in that, The connecting band also includes fasteners. The front and rear ends of the bracket (60) are provided with connecting holes (61). The fasteners pass through the connecting holes (61) and are connected to the interior cover (40).

7. The head-mounted display device according to claim 5, characterized in that, The bracket (60) has a mounting through hole, and the speaker (30) is fitted into the mounting through hole in a shape-adaptive manner.

8. The head-mounted display device according to claim 1, characterized in that, The inner surface of the interior cover (40) is provided with a plurality of pairs of protrusions (44), and the wire (70) is inserted into the gap between two of the protrusions (44) in each pair of protrusions (44).

9. The head-mounted display device according to claim 1, characterized in that, The connecting strip also includes a dustproof net, which is adhered to the inner surface of the protrusion (41) and covers the sound through hole (410).

10. The head-mounted display device according to claim 1, characterized in that, The head-mounted display device also includes a power amplifier, which is electrically connected to the motherboard and the speaker (30) respectively. The electrical signal emitted by the motherboard is transmitted to the speaker (30) through the power amplifier.

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