Wearable projection device
By using a heat-smoothing plate and a piezoelectric film-driven airflow generator in the wearable projection device, the cooling airflow is guided to impact the heat-smoothing plate, solving the problems of high noise and low efficiency of traditional heat dissipation methods, and achieving better heat dissipation effect and Display quality.
Patent Information
- Application Number
- CN202311016300.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-08-14
- Publication Date
- 2025-02-21
AI Technical Summary
In terms of heat dissipation, the wearable projection device has a natural convection method that requires more surface area and cannot be lightened. The forced convection method has high noise and low heat generation capacity for fluid treatment, and it is easy to reduce the heat dissipation effect due to dust covering the outlet/inlet port.
The heat dissipation assembly including a heat-efficient plate and an air flow generator is adopted. The heat-efficient plate is connected to the optical machine module. The air flow generator includes a piezoelectric film. The control module drives the piezoelectric film to vibrate and guides the cooling airflow into the accommodation space to cool the heat-efficient plate.
Improves fluid usage efficiency, reduces noise, and improves heat dissipation and display quality at the same power consumption.
Smart Images
Figure CN119493322A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a projection device, and in particular to a wearable projection device. Background Art
[0002] As the technology industry develops day by day, the types, functions and usage methods of projection devices are becoming more and more diverse, and wearable projection devices that can be directly worn on the user's body have also emerged. In terms of the heat dissipation of current wearable projection devices, if natural convection is used for heat dissipation, more surface area is required for heat dissipation, and thus the purpose of lightweight wearable projection devices cannot be achieved. On the contrary, if forced convection is used for heat dissipation, blowers and axial fans are required. However, at the same volume and noise, the heat that blowers and axial fans can handle is lower and the efficiency is poor. In addition, if the wearable projection device is used outdoors, the forced convection heat dissipation method is prone to dust blocking the air inlet / outlet, resulting in a decrease in the heat dissipation effect.
[0003] The "background technology" section is only used to help understand the content of the present invention. Therefore, the content disclosed in the "background technology" section may contain some known technologies that are not known to those skilled in the art. The content disclosed in the "background technology" section does not mean that the content or the problems to be solved by one or more embodiments of the present invention have been known or recognized by those skilled in the art before the application of the present invention. Summary of the invention
[0004] The invention provides a wearable projection device with better heat dissipation effect and display quality.
[0005] Other purposes and advantages of the present invention can be further understood from the technical features disclosed in the present invention.
[0006] In order to achieve one or part or all of the above purposes or other purposes, one embodiment of the present invention proposes a wearable projection device, including a main body, an optical-mechanical module, a heat dissipation component and a control module. The main body has an air inlet, and the main body has a housing space connected to the air inlet. The optical-mechanical module is arranged in the housing space of the main body. The heat dissipation component is arranged in the housing space of the main body to dissipate the heat of the optical-mechanical module. The heat dissipation component includes a heat spreader and an airflow generator. The heat spreader is connected to the optical-mechanical module. The airflow generator is located on the heat spreader, wherein the airflow generator includes a piezoelectric film. The control module is arranged in the main body and electrically connected to the optical-mechanical module and the airflow generator. The control module is used to drive the piezoelectric film to vibrate so that an external cooling airflow enters the housing space of the main body from the air inlet to cool the heat spreader.
[0007] Based on the above, the embodiments of the present invention have at least one of the following advantages or effects. In the design of the wearable projection device of the present invention, the heat dissipation component includes a heat spreader and a wind flow generator including a piezoelectric film, wherein the heat spreader is connected to the optical machine module, and the wind flow generator is located on the heat spreader. When the control module drives the piezoelectric film to vibrate, the external cooling airflow can enter the accommodating space of the main body through the air inlet to cool the heat spreader. In other words, the heat spreader is impact-cooled after passing through the piezoelectric film, thereby improving the efficiency of fluid use, and can reduce noise at the same power consumption. In short, the wearable projection device of the present invention can have better heat dissipation effect and display quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 is a three-dimensional schematic diagram of a wearable projection device according to an embodiment of the present invention.
[0009] Figure 2 yes Figure 1 A partial front view schematic diagram of a wearable projection device.
[0010] Figure 3 yes Figure 1 Schematic diagram of the optical-mechanical module of the wearable projection device.
[0011] Figure 4 yes Figure 3 Schematic cross-sectional view of the optomechanical module.
[0012] Figure 5 yes Figure 1 A cross-sectional schematic diagram of a wind flow generator of a wearable projection device.
[0013] Fig. 6A yes Figure 1 A rear perspective schematic diagram of a wearable projection device.
[0014] Figure 6B yes Fig. 6A Rear view stereoscopic schematic diagram of the airflow adjustment structure when it is closed.
[0015] Figure 7 yes Figure 1 A partial top-down perspective schematic diagram of a wearable projection device.
[0016] Fig. 8A yes Fig. 6A A partial front view schematic diagram of a wearable projection device.
[0017] Figure 8B yes Fig. 8A A partial front view schematic diagram of the airflow regulating structure when it is closed.
[0018] Fig.9A yes Figure 1A partial side cross-sectional schematic diagram of a wearable projection device.
[0019] Fig. 9B yes Fig.9A A partial side cross-sectional schematic diagram of the airflow regulating structure when it is closed.
[0020] Fig. 10A yes Figure 1 A partial side view schematic diagram of the air flow regulating structure of the air outlet of the wearable projection device when it is opened.
[0021] Fig. 10B yes Fig. 10A A partial side view schematic diagram of the airflow adjustment structure when it is closed.
[0022] Description of reference numerals:
[0023] 100: Wearable projection device
[0024] 110: Ontology
[0025] 112: Display unit
[0026] 113: First side wall
[0027] 114: Support
[0028] 115: Second side wall
[0029] 117: Connecting Wall
[0030] 120: Optical-mechanical module
[0031] 122: Light source device
[0032] 123: Light-emitting element
[0033] 124: Imaging module
[0034] 125: Lens
[0035] 126: Lens module
[0036] 130: Heat dissipation components
[0037] 132: Vapor Chamber
[0038] 134: Wind Flow Generator
[0039] 135: Piezoelectric film
[0040] 137: Heat sink
[0041] 138: Shell
[0042] 139: Metal Plate
[0043] 140: Control module
[0044] 150: Buffer
[0045] 160: Thermally conductive material
[0046] 170, 190: Airflow adjustment structure
[0047] 172, 192: Louver
[0048] 180, 200: Dust screen
[0049] 210: Lens
[0050] D: Airflow direction
[0051] E1, E3: Air inlet
[0052] E2, E4: Air outlet
[0053] F: Cooling air flow
[0054] S: Accommodation space
[0055] T: Wall thickness
[0056] W: width. DETAILED DESCRIPTION
[0057] The above-mentioned other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, etc., are only the directions with reference to the accompanying drawings. Therefore, the directional terms used are used to illustrate and not to limit the present invention.
[0058] Figure 1 is a three-dimensional schematic diagram of a wearable projection device according to an embodiment of the present invention. Figure 2 yes Figure 1 A partial front view schematic diagram of a wearable projection device. Figure 3 yes Figure 1 Schematic diagram of the optical-mechanical module of the wearable projection device. Figure 4 yes Figure 3 Schematic cross-sectional view of the optomechanical module. Figure 5 yes Figure 1 A cross-sectional schematic diagram of a wind flow generator of a wearable projection device. Fig. 6A yes Figure 1 A rear perspective schematic diagram of a wearable projection device. Figure 6B yes Fig. 6A Rear view stereoscopic schematic diagram of the airflow adjustment structure when it is closed. Figure 7 yes Figure 1 A partial top-down perspective schematic diagram of a wearable projection device. Fig. 8A yes Fig. 6AA partial front view schematic diagram of a wearable projection device. Figure 8B yes Fig. 8A A partial front view schematic diagram of the airflow regulating structure when it is closed. Fig.9A yes Figure 1 A partial side cross-sectional schematic diagram of a wearable projection device. Fig. 9B yes Fig.9A A partial side cross-sectional schematic diagram of the airflow regulating structure when it is closed. Fig. 10A yes Figure 1 A partial side view schematic diagram of the air flow regulating structure of the air outlet of the wearable projection device when it is opened. Fig. 10B yes Fig. 10A A partial side view of the airflow regulating structure of FIG. 1 is shown in FIG. 1 when the airflow regulating structure is closed. For the sake of convenience, Figure 1 Presented in a partial perspective.
[0059] Please refer to Figure 1 , Figure 2 , Figure 5 and Fig. 6A In the present embodiment, the wearable projection device 100 includes a main body 110, an optical machine module 120, a heat dissipation component 130 and a control module 140. The main body 110 has an air inlet E1 and a receiving space S connected to the air inlet E1. The optical machine module 120 is disposed in the receiving space S of the main body 110. The heat dissipation component 130 is disposed in the receiving space S of the main body 110 to dissipate heat from the optical machine module 120. The heat dissipation component 130 includes a heat spreader 132 and an airflow generator 134. The heat spreader 132 is connected to the optical machine module 120, and the airflow generator 134 is located on the heat spreader 132, wherein the airflow generator 134 includes a piezoelectric film 135. The control module 140 is disposed in the main body 110 and is electrically connected to the optical machine module 120 and the airflow generator 134. The control module 140 is used to drive the piezoelectric film 135 to vibrate, so that the external cooling air flow F enters the accommodating space S of the body 110 through the air inlet E1 to cool the heat sink 132 .
[0060] For more details, please refer to Figure 1 and Fig. 6AIn the present embodiment, the main body 110 further has an air outlet E2 connected to the accommodating space S. The main body 110 includes a display portion 112 and a support portion 114 connected to each other, wherein the accommodating space S is located in the display portion 112. The display portion 112 of the main body 110 includes a first side wall 113 and a second side wall 115 opposite to each other and a connecting wall 117 connecting the first side wall 113 and the second side wall 115. The air inlet E1 is disposed on the first side wall 113, and the air outlet E2 is located on the connecting wall 117. The first side wall 113 of the display portion 112 faces the user of the wearable projection device 100. It should be noted that, in the present embodiment, the number of the air inlet E1 is schematically illustrated as two, and the number of the air outlet E2 is also two, respectively on the left and right sides of the connecting wall 117, but it is not limited thereto. It should be further explained that, in the present embodiment, the optical-mechanical module 120, the heat dissipation component 130 and the control module 140 are only drawn on one side of the display unit 112. However, in actual application, the optical-mechanical module 120, the heat dissipation component 130 and the control module 140 can be set on both the left and right sides of the display unit 112. Therefore, the optical-mechanical module 120, the heat dissipation component 130 and the control module 140 set on the other side of the display unit 112 are not described separately.
[0061] Furthermore, please also refer to Figure 3 and Figure 4 In the present embodiment, the optomechanical module 120 is, for example, a projector, wherein the optomechanical module 120 includes a light source device 122, an imaging module 124, and a lens module 126. The light source device 122 of the optomechanical module 120 includes a light emitting element 123, and the light emitting element 123 is used to emit an illumination light beam L1, wherein the light emitting element 123 may be a light emitting diode (LED) or a laser diode (LD), but the present invention does not limit the type or form of the light source device 122, and its detailed structure and implementation can be sufficiently taught, suggested, and implemented by the common knowledge in the relevant technical field, so it is not repeated here.
[0062] Furthermore, the imaging module 124 of the optical machine module 120 is disposed on the transmission path of the illumination beam L1, and is used to convert the illumination beam L1 to generate an image beam L2. The imaging module 124 includes a lens 125 and an imaging device, wherein the lens 125 is used to transmit the illumination beam L1, and the imaging device is, for example, a light valve, which is used to convert the illumination beam L1 into the image beam L2. For example, the light valve can be a reflective light modulator such as a Liquid Crystal On Silicon panel or a Digital Micro-mirror Device. Alternatively, the light valve can be a transmissive light modulator such as a Transparent Liquid Crystal Panel, an Electro-Optical Modulator, a Magneto-Optic modulator, or an Acousto-Optic Modulator. The present invention does not limit the type and type of the light valve. The detailed steps and implementation methods of the method for converting the illumination beam L1 into the image beam L2 by the light valve can be sufficiently taught, suggested and implemented by the common knowledge in the relevant technical field, so they are not described in detail.
[0063] In addition, the lens module 126 of the optical machine module 120 is disposed on the transmission path of the image beam L2, and is used to project the image beam L2 to the lens 210 connected to the display unit 112. The lens module 126 may include a combination of one or more optical lenses with refractive power, for example, various combinations of non-planar lenses such as biconcave lenses, biconvex lenses, concave-convex lenses, convex-concave lenses, plano-convex lenses, and plano-concave lenses. In one embodiment, the lens module 126 may also include a planar optical lens to project the image beam L2 out of the body 110 in a reflective manner. The present invention does not limit the type and type of the lens module 126.
[0064] Next, please refer to the Figure 2 , Figure 5 and Figure 7, the heat spreader 132 of the heat dissipation component 130 of the present embodiment has excellent thermal conductivity. In one embodiment, the interior of the heat spreader 132 may include a capillary structure and a fluid, and the heat is quickly and evenly distributed on the surface of the heat spreader 132 through liquid phase changes. That is, the heat spreader 132 is a structure with uneven thermal conductivity, wherein the thermal conductivity of the heat spreader 132 in the horizontal direction is different from the thermal conductivity in the vertical direction. Furthermore, the wearable projection device 100 of the present embodiment may also include a thermally conductive material 160, which is disposed between the heat spreader 132 and the optical-mechanical module 120. In other words, the heat spreader 132 can be connected to a heat source (such as a heat source) on the optical-mechanical module 120 through the thermally conductive material 160. Figure 4 Therefore, when the piezoelectric film 135 of the air flow generator 134 vibrates, the cooling air flow F can be guided to enter the body 110 through the air inlet E1, and the heat spreader 132 can be directly cooled by the cooling air flow F, so that the wearable projection device 100 of this embodiment has better heat dissipation efficiency. In one embodiment, the thermal conductive material 160 is, for example, a thermal interface material (TIM), but is not limited thereto.
[0065] Furthermore, the airflow generator 134 of the heat dissipation assembly 130 of the present embodiment may be disposed on a side of the heat spreader 132 away from the optical-mechanical module 120 (eg, Figure 2 In another embodiment, the wind flow generator 134 may also be disposed on a side of the heat spreader 132 facing the optical engine module 120 (not shown), which is not limited here. Figure 5 and Fig. 6A As shown, the air flow generator 134 of this embodiment has an air inlet E3 and an air outlet E4, wherein the cooling air flow F enters the accommodating space S from the air inlet E1 of the body 110, and enters the air flow generator 134 from the air inlet E3 of the air flow generator 134, and flows along the air flow direction D generated by the air flow generator 134. At this time, the heat transfer coefficient of the vapor chamber 132 gradually increases along the air flow direction D, which means that the vapor chamber 132 has a higher heat transfer coefficient at the air outlet E4 of the air flow generator 134.
[0066] In particular, Figure 5As shown, in this embodiment, the wind flow generator 134 further includes a heat sink 137, wherein the heat sink 137 includes a housing 138 and a metal plate 139, and the piezoelectric film 135 is connected to the housing 138 of the heat sink 137. The metal plate 139 has good thermal conductivity, which can evenly distribute heat, and can introduce cooling wind flow F through the vibration of the piezoelectric film 135 to cool the metal plate 139. In other words, when the piezoelectric film 135 vibrates, the introduced cooling air flow F can impact the metal plate 139 of the cooling heat sink 137, and then cool the heat sink 132 through the metal plate 139 of the heat sink 137, thereby improving the heat dissipation efficiency.
[0067] Please refer to Figure 1 and Figure 2 , the wearable projection device 100 of this embodiment further includes a buffer 150, which is disposed between the heat spreader 132 and the heat spreader 132. The airflow generator 134 contacts the heat spreader 132 through the buffer 150, which means that the airflow generator 134 does not directly contact the heat spreader 132. It should be further explained that the metal plate 139 of the airflow generator 134 can be attached to the buffer 150. The buffer 150 can be regarded as a damper, which is elastic and can absorb vibrations, thereby preventing the vibrations from being transmitted to the optical-mechanical module 120 and affecting the operation of the optical-mechanical module 120. In one embodiment, the buffer 150 is, for example, a thermal interface material (TIM), which can take into account the functions of absorbing vibrations and conducting heat at the same time.
[0068] For further information, please also refer to Figure 2 , Figure 5 and Fig. 6A When the piezoelectric film 135 of the air flow generator 134 vibrates, the introduced cooling air flow F can enter the body 110 from the air inlet E1 along the negative Y-axis direction. At this time, a part of the cooling air flow F enters the air flow generator 134 along the negative Z-axis direction, and impacts the cooling metal plate 139 after the piezoelectric film 135 vibrates. Furthermore, since the metal plate 139 is connected to the heat spreader 132 through the buffer 150, the heat spreader 132 will also be cooled, and then the air will be discharged to the air outlet E2 along the X-axis direction. The other part of the cooling air flow F that does not enter the air flow generator 134 will flow directly to the heat spreader 132, and can also achieve the effect of cooling the heat spreader 132. In addition, the cooling air flow F that flows directly to the heat spreader 132 will also be discharged to the air outlet E2 along the X-axis direction.
[0069] Please refer to Figure 1 and Figure 2, the control module 140 of this embodiment is configured in the accommodating space S, wherein the control module 140 includes electronic components, such as a microprocessor or an image processor, but is not limited thereto. In one embodiment, the thermal conductive material 160 is configured between the heat spreader 132 and the control module 140, wherein the heat spreader 132 is connected to the heat source on the control module 140 through the thermal conductive material 160. Here, the orthographic projection of the control module 140 on the heat spreader 132 does not overlap the orthographic projection of the optical machine module 120 on the heat spreader 132. It should be further explained that in addition to being configured in the accommodating space S, the control module 140 can also be configured on the outside of the main body 110. For example, the control module 140 can be configured on the side of the connecting wall 117 away from the accommodating space S, but is not limited thereto.
[0070] In this embodiment, please also refer to Fig. 6A and Figure 6B The wearable projection device 100 also includes an airflow regulating structure 170, which is disposed on the main body 110 and located at the air inlet E1. The airflow regulating structure 170 includes a louver structure, wherein the louver structure is a structure that can align and arrange multiple slender plates in parallel at a certain interval. Here, the louver structure is, for example, a plurality of louver blades 172, wherein the plurality of louver blades 172 are arranged parallel to each other and do not interfere with each other. Here, the number of louver blades 172 is illustrated as two blades, but is not limited to this. In one embodiment, the louver structure can also be a shutter. Next, please also refer to Fig. 8A , Figure 8B , Fig.9A and Fig. 9B ,in, Fig. 8A , 9A The piezoelectric film 135 vibrates to guide the cooling airflow F into the body 110. Figure 8B , 9B The piezoelectric film 135 stops vibrating and does not guide the cooling airflow F into the body 110. In order to prevent dust from entering the body 110 along with the cooling airflow F and affecting the components in the body 110, the wearable projection device 100 of this embodiment further includes a dustproof net 180, which is disposed on the body 110 and covers the air inlet E1, wherein the dustproof net 180 is located between the airflow generator 134 and the airflow adjustment structure 170. Fig.9A As shown, the width W of each louver 172 may be less than or equal to the wall thickness T of the body 110 , that is, when the airflow regulating structure 170 is opened, the louver 172 may be hidden in the body 110 and does not occupy space in the system, thereby achieving the purpose of lightweight.
[0071] Furthermore, if Figure 2 , Fig. 6A , Fig. 8A and Fig.9AAs shown, when the control module 140 drives the airflow generator 134, the airflow adjustment structure 170 is used to guide the cooling airflow F from the air inlet E1 into the accommodation space S. That is, when the airflow generator 134 is in operation, each louver 172 can be opened in a single direction, so that the cooling airflow F can enter the accommodation space S from between any two adjacent louver 172 through the dustproof net 180 to cool the heat spreader 132. Figure 2 , Figure 8B and Fig. 9B As shown, when the air flow generator 134 is not in operation, the plurality of louvers 172 are closed to shield the air inlet E1 , that is, the air flow adjustment structure 170 is closed to shield the dustproof net 180 , thereby achieving a dustproof effect.
[0072] See also Fig. 10A , 10B , Fig. 10A The cooling air flow F is discharged from the accommodating space S from the air outlet E2. Fig. 10B The piezoelectric film 135 stops vibrating and does not guide the cooling airflow F into the body 110. The wearable projection device also includes an airflow regulating structure 190, which is disposed on the body 110 and located at the air outlet E2, wherein the airflow regulating structure 190 may include a plurality of louvers 192. When the control module 140 drives the airflow generator 134, the airflow regulating structure 190 is used to guide the cooling airflow F to be discharged from the accommodating space S from the air outlet E2. In addition, the wearable projection device may also include a dustproof net 200, which is disposed on the body 110 and covers the air outlet E2, wherein the dustproof net 200 is located between the airflow generator 134 and the airflow regulating structure 190. When the airflow generator 134 is not operating, the airflow regulating structure 190 is closed to cover the dustproof net 200, so as to achieve a dustproof effect. The structures of the airflow regulating structure 190 and the dustproof net 200 mentioned here can refer to the structures and settings of the airflow regulating structure 170 and the dustproof net 180 mentioned above, and will not be repeated here.
[0073] In short, when the control module 140 drives the piezoelectric film 135 to vibrate, the external cooling airflow F can enter the accommodating space S of the main body 110 through the air inlet E1, and can impact the metal plate 139 of the cooling heat sink 137, and then cool the heat spreader 132 through the metal plate 139 of the heat sink 137. In this way, the fluid use efficiency can be improved, and the noise can be expected to be reduced at the same power consumption. Furthermore, this embodiment enhances the dustproof design through the provision of the airflow adjustment structure 170. In addition, the louver 172 of the airflow adjustment structure 170 can be hidden in the main body 110, so that the wearable projection device 100 can achieve a lightweight design.
[0074] In summary, the embodiments of the present invention have at least one of the following advantages or effects. In the design of the wearable projection device of the present invention, the heat dissipation component includes a heat spreader and a wind flow generator including a piezoelectric film, wherein the heat spreader is connected to the optical machine module, and the wind flow generator is located on the heat spreader. When the control module drives the piezoelectric film to vibrate, the external cooling airflow can enter the accommodating space of the main body through the air inlet to cool the heat spreader. In other words, the heat spreader is cooled by impact after passing through the piezoelectric film, thereby improving the use efficiency of the fluid, and it is expected to reduce noise at the same power consumption. In short, the wearable projection device of the present invention can have better heat dissipation effect and display quality.
[0075] However, the above is only a preferred embodiment of the present invention, and it cannot be used to limit the scope of the implementation of the present invention. That is, all simple equivalent changes and modifications made according to the claims and the content of the invention of the present invention are still within the scope of the patent of the present invention. In addition, any embodiment or claim of the present invention does not need to achieve all the purposes, advantages or features disclosed by the present invention. In addition, the abstract and title (invention name) are only used to assist in the retrieval of patent documents, and are not used to limit the scope of rights of the present invention. In addition, the terms "first", "second", etc. mentioned in this specification or claims are only used to name the name of the element or distinguish different embodiments or scopes, and are not used to limit the upper or lower limit on the number of elements.
Claims
1. A wearable projection device, characterized in that: The wearable projection device includes a body, an optical-mechanical module, a heat dissipation component and a control module, wherein: The main body has an air inlet, and the main body has a containing space connected to the air inlet; The optical-mechanical module is disposed in the accommodation space of the body; The heat dissipation component is disposed in the accommodation space of the body to dissipate heat from the optical-mechanical module. The heat dissipation component includes a heat spreader and a wind flow generator, wherein: The heat spreader is connected to the optical-mechanical module; and The wind flow generator is located on the heat spreader, wherein the wind flow generator comprises a piezoelectric film; and The control module is configured on the body and electrically connected to the optical-mechanical module and the airflow generator, wherein the control module is used to drive the piezoelectric film to vibrate so that external cooling airflow enters the accommodating space of the body through the air inlet to cool the heat spreader.
2. The wearable projection device according to claim 1, characterized in that: The main body also has an air outlet connected to the accommodating space, and the main body includes a display part and a supporting part connected to each other, the accommodating space is located in the display part, the display part of the main body includes a first side wall and a second side wall opposite to each other and a connecting wall connecting the first side wall and the second side wall, the air inlet is arranged on the first side wall, and the air outlet is located on the connecting wall, and the first side wall of the display part faces the user of the wearable projection device.
3. The wearable projection device according to claim 2, characterized in that: The wearable projection device further comprises an airflow regulating structure, wherein: The airflow regulating structure is disposed on the body and located at the air outlet, wherein when the control module drives the airflow generator, the airflow regulating structure is used to guide the cooling airflow to be discharged from the accommodating space through the air outlet.
4. The wearable projection device according to claim 3, characterized in that: The wearable projection device also includes a dustproof net, wherein: The dustproof net is disposed on the body and covers the air outlet. The dustproof net is located between the wind flow generator and the air flow regulating structure. When the wind flow generator is not in operation, the air flow regulating structure is closed to shield the dustproof net.
5. The wearable projection device according to claim 1, characterized in that: The wearable projection device further comprises a buffer, wherein: The buffer is disposed between the vapor chamber and the air flow generator, wherein the air flow generator contacts the vapor chamber through the buffer.
6. The wearable projection device according to claim 5, characterized in that: The buffer comprises a thermal interface material.
7. The wearable projection device according to claim 1, characterized in that: The wearable projection device further comprises a heat conducting material, wherein: The thermal conductive material is disposed between the vapor chamber and the optical-mechanical module. The control module is disposed in the accommodating space. The thermal conductive material is disposed between the vapor chamber and the control module.
8. The wearable projection device according to claim 7, characterized in that: The orthographic projection of the control module on the vapor chamber does not overlap the orthographic projection of the optical-mechanical module on the vapor chamber.
9. The wearable projection device according to claim 1, characterized in that: The wind flow generator further includes a heat sink, and the piezoelectric film is connected to the heat sink.
10. The wearable projection device according to claim 1, characterized in that: The wearable projection device further comprises an airflow regulating structure, wherein: The airflow regulating structure is configured on the body and located at the air inlet, wherein when the control module drives the airflow generator, the airflow regulating structure is used to guide the cooling airflow to enter the accommodating space from the air inlet.
11. The wearable projection device according to claim 10, characterized in that: The wearable projection device also includes a dustproof net, wherein: The dustproof net is disposed on the body and covers the air inlet. The dustproof net is located between the wind flow generator and the air flow regulating structure. When the wind flow generator is not in operation, the air flow regulating structure is closed to shield the dustproof net.
12. The wearable projection device according to claim 10, characterized in that: The airflow regulating structure includes a louver structure, which includes a plurality of louver blades. The plurality of louver blades are arranged parallel to each other and do not interfere with each other. The width of each of the plurality of louver blades is less than or equal to the wall thickness of the body.
13. The wearable projection device according to claim 12, characterized in that: When the wind flow generator is operating, each of the multiple louvers opens in a single direction so that the cooling airflow can enter the accommodating space from between any two adjacent louvers. When the wind flow generator is not operating, the multiple louvers of the louver structure are closed to cover the air inlet.
14. The wearable projection device according to claim 1, characterized in that: The optical-mechanical module includes a light source device, an imaging module and a lens module, wherein: The light source device is used to emit an illumination light beam; The imaging module is disposed on the transmission path of the illumination light beam, and is used to convert the illumination light beam to generate an image light beam; and The lens module is disposed on the transmission path of the image light beam and is used to project the image light beam out of the body.
15. The wearable projection device according to claim 1, characterized in that: The cooling airflow enters the accommodating space from the air inlet and flows along the airflow direction generated by the airflow generator, and the heat conductivity coefficient of the vapor chamber gradually increases along the airflow direction.