Water mist prevention and control structure and projection equipment

Abstract

The utility model relates to the technical field of projection equipment parts, in particular to a water mist prevention and control structure and projection equipment, the water mist prevention and control structure comprises a shell, a projection assembly arranged on the shell and a heat dissipation assembly, the shell is provided with a communication assembly, and the communication assembly comprises a communication channel and an isolation water permeable piece arranged on the communication channel; an airflow circulation channel is formed among the heat dissipation assembly, the projection assembly and the communication assembly, and the airflow circulation channel comprises a main airflow channel. When the heat dissipation assembly operates, the radiator forms airflow in the shell, the airflow passes through a main airflow channel of the airflow circulation channel and reaches the communication assembly through the projection assembly, water vapor in the airflow is discharged from the interior of the shell to the exterior of the shell through the isolation water permeable piece, and the drained airflow continues to flow in the shell; the water vapor content in the shell can be effectively reduced through uninterrupted circulation of the heat dissipation assembly, so that water vapor is prevented from being condensed on the lens and the surface of the lens, and the projection quality is ensured.

Description

Technical Field

[0001] This application relates to the field of projection equipment component technology, and in particular to a water mist control structure and projection equipment. Background Technology

[0002] A projection device is a display device that can conveniently project an image onto a designated plane using a set of light beams. Projection devices come in various types depending on the application, with single-panel LCD projectors being the most common. Because projection devices require heat dissipation, their enclosures are difficult to seal. In everyday environments, water vapor can easily enter the projection device and condense on the lens surface, affecting the projection effect when the device is running. Utility Model Content

[0003] In order to improve the problem of water mist condensing on the lens and affecting the projection effect in related technologies, this application provides a water mist control structure and a projection device.

[0004] On one hand, this application provides a water mist control structure, including a shell, a projection component disposed on the shell, and a heat dissipation component. The shell is provided with a communication component, which includes a communication channel and an isolation and water-permeable component disposed on the communication channel. An airflow circulation channel is formed between the heat dissipation component, the projection component, and the communication component, and the airflow circulation channel includes a main airflow channel.

[0005] Furthermore, the connecting channel is disposed on the surface of the outer shell, and the connecting channel connects the interior of the outer shell with the exterior of the outer shell; the water-permeable isolation component includes several layers of isolation units.

[0006] Furthermore, the several layers of the isolation unit include one or more layers of nylon, polyethersulfone, polyester, polyvinylidene fluoride, or expanded polytetrafluoroethylene.

[0007] Furthermore, the water-permeable isolation component includes a control valve located on the side of the communication channel away from the housing.

[0008] Furthermore, the heat dissipation assembly includes an internal circulation fan disposed on one side of the housing, and the communication channel is located on the other side of the housing; the internal circulation fan faces the communication channel.

[0009] Furthermore, the heat dissipation assembly also includes a circulating heat sink, which is disposed on one side of the housing, and the connecting channel is disposed in the circulating heat sink.

[0010] Furthermore, the housing has a display section and a light source section, and a connecting section is provided between the display section and the light source section; the projection assembly includes an imaging element disposed in the display section, a light source element disposed in the light source section, and a connecting element disposed in the connecting section; the airflow circulation channel further includes at least one branch airflow channel, the branch airflow channel being located on one side of the main airflow channel; the branch airflow channel passes through the projection assembly.

[0011] Furthermore, the connecting section has a connecting cavity, and the connecting member includes an optical housing disposed in the connecting cavity and a first lens disposed in the optical housing. The first lens is fitted into the optical housing, and the branch airflow channel is formed between the first lens and the optical housing.

[0012] Furthermore, the light source includes a light source, a condenser, a second lens, a heat-insulating glass, and a display screen arranged sequentially; the tributary airflow channel is formed between the condenser, the second lens, the heat-insulating glass, and the display screen.

[0013] On the other hand, this application provides a projection device, including a water mist control structure as described in any of the preceding claims.

[0014] The beneficial effects of this application are:

[0015] 1. This application discloses a water mist control structure. By setting a heat dissipation component and a connecting component in the outer shell, when the heat dissipation component is running, the heat sink forms an airflow in the outer shell. The airflow passes through the main airflow channel of the airflow circulation channel, passes through the projection component, and reaches the connecting component. Since the connecting channel is equipped with an isolation and water-permeable component, the water vapor in the airflow will be discharged from the inside of the outer shell to the outside of the outer shell through the isolation and water-permeable component. The airflow after drainage continues to flow inside the outer shell. By using the heat dissipation component to continuously create circulation, the water vapor content inside the outer shell can be effectively reduced, thereby preventing water vapor from condensing on the lens and lens surface and ensuring projection quality.

[0016] 2. This application discloses a water mist control structure. By setting a connecting channel on the opposite side of the internal circulation fan and placing the connecting channel at the circulation radiator, the internal circulation fan can drive the airflow through most of the area inside the casing to the circulation radiator for heat dissipation when it is cooling down. While ensuring the heat dissipation effect, it simultaneously drives the airflow inside the casing to the connecting channel for drainage, thereby improving the efficiency and effect of water mist control.

[0017] 3. This application discloses a water mist control structure in which the light source is provided with several elements and a branch airflow channel is formed between the elements. This allows airflow to pass between the elements and carry away the water vapor between the elements to the connecting channel, thereby preventing water mist from condensing on the light source and further improving the control effect of water mist. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a water mist control structure provided in an embodiment of this application;

[0019] Figure 2 This is a cross-sectional schematic diagram of a water mist control structure provided in Embodiment 1 of this application;

[0020] Figure 3 This is a schematic diagram of the water-permeable isolation component in a water mist control structure provided in Embodiment 1 of this application;

[0021] Figure 4 yes Figure 2 A magnified view of part A in the middle;

[0022] Figure 5 This is a cross-sectional schematic diagram of a water mist control structure provided in Embodiment 2 of this application.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Outer shell; 11. Display section; 12. Light source section; 13. Connecting section; 2. Projection assembly; 21. Imaging element; 22. Light source element; 221. Condenser; 222. Second lens; 223. Heat-insulating glass; 224. Display screen; 23. Connecting element; 231. Optical engine housing; 232. First lens; 3. Heat dissipation assembly; 31. Internal circulation fan; 32. Circulating radiator; 4. Connecting assembly; 41. Connecting channel; 42. Water-permeable isolation component; 421. Isolation unit; 422. Control valve; 5. Airflow circulation channel; 51. Main airflow channel; 52. Branch airflow channel. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0026] It should be noted that although functional modules are divided in the device schematic diagram and a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flowchart. The terms "first," "second," etc., in the specification, claims, and the aforementioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0028] Implementation 1

[0029] Reference Figure 1 as well as Figure 2 On the one hand, this application provides a water mist control structure, including a shell 1, a projection component 2 disposed on the shell 1, a heat dissipation component 3 and a communication component 4. When the heat dissipation component 3 is running, it will form an airflow in the shell 1. The airflow passes through the projection component 2 to form a circulating airflow channel. The moisture in the circulating airflow channel is discharged through the communication component 4, thereby reducing the moisture content in the shell 1 and preventing water mist from condensing on the projection component 2.

[0030] Reference Figure 2 as well as Figure 3 Specifically, the outer casing 1 is used to support and install various components. The outer casing 1 has a display segment 11 and a light source segment 12, and a connecting segment 13 is provided between the display segment 11 and the light source segment 12. The display segment 11 and the light source segment 12 are connected by the connecting segment 13. The connecting component 4 includes a connecting channel 41 disposed on the outer casing 1 and an insulating and permeable component 42 disposed on the connecting channel 41. The connecting channel 41 is disposed on the surface of the outer casing 1 and connects the interior and exterior of the outer casing 1. It can be understood that the connecting channel 41 can be located at one or more locations of the display segment 11 and the light source segment 12 of the outer casing 1. In this embodiment, the insulating and permeable component 42 includes several layers of insulating units 421, which cover the side of the connecting channel away from the outer casing 1. In this embodiment, the isolation unit 421 is a one-way permeable membrane. Depending on the application scenario, the isolation unit 421 can be selected from one or more of nylon (PA), polyethersulfone (PES), polyester (PET), polyvinylidene fluoride (PVDF), or expanded polytetrafluoroethylene, so that the several layers of isolation unit 421 include one or more layers of nylon layer, polyethersulfone layer, polyester layer, polyvinylidene fluoride layer, or expanded polytetrafluoroethylene layer.

[0031] To ensure effective heat dissipation and water mist control, an airflow circulation channel 5 is formed between the heat dissipation component 3, the projection component 2, and the connecting component 4. This airflow circulation channel 5 includes a main airflow channel 51. In this embodiment, the heat dissipation component 3 includes an internal circulation fan 31, which operates inside the housing 1 to generate airflow. The internal circulation fan 31 is located on one side of the housing 1, and the connecting channel 41 is located on the other side of the housing 1. The internal circulation fan 31 faces the connecting channel 41, and the projection component 2 is located between the internal circulation fan 31 and the connecting channel. With this arrangement of the projection component 2, the heat dissipation component 3, and the connecting component 4, the airflow generated by the internal circulation fan 31 flows through the projection component 2 to the connecting channel 41. Moisture in the airflow is discharged from the isolation unit 421, and the airflow after water discharge continues to circulate back to the internal circulation fan 31. This circulation route is the main airflow channel 51. It can be understood that, to ensure airflow efficiency, a main airflow slot can also be opened in the housing 1 for guidance to ensure the formation of the main airflow channel 51.

[0032] To improve heat dissipation and water mist control, the heat dissipation assembly 3 also includes a circulating radiator 32, which is disposed on one side of the outer casing 1, and a connecting channel 41 is disposed within the circulating radiator 32. In this embodiment, the circulating radiator 32 is a heat dissipation fin. When airflow reaches the circulating radiator 32, the airflow comes into contact with the circulating radiator 32 to exchange heat with the outside environment more quickly and reduce the temperature. At the same time, the moisture in the airflow is discharged through the isolation unit 421 to improve heat exchange efficiency and water mist control quality.

[0033] Reference Figure 2 as well as Figure 4 The projection assembly 2 includes an imaging unit and a light source unit. In this embodiment, the projection assembly 2 includes an imaging element 21 disposed in the display section 11, a light source element 22 disposed in the light source section 12, and a connector 23 disposed in the connecting section 13. To ensure that moisture in the projection assembly 2 can be removed in a timely manner, the airflow circulation channel 5 also includes at least one branch airflow channel 52, which is located on one side of the main airflow channel 51; the branch airflow channel 52 passes through the projection assembly 2. In this embodiment, the housing 1 has an imaging cavity in the display section 11, and the imaging element 21 includes a lens disposed in the imaging cavity and a full-reflection mirror. The outer casing 1 has a connecting cavity in the connecting section 13. The connecting member 23 includes an optical housing 231 disposed in the connecting cavity and a first lens 232 disposed in the optical housing 231. The first lens 232 is specifically a Fresnel lens, but it can also be other types of lenses. The first lens 232 is fitted into the optical housing 231, and there is a gap between the first lens 232 and the optical housing 231 to allow airflow to pass through, thereby forming a branch airflow channel 52 between the first lens 232 and the optical housing 231.

[0034] By configuring the connector 23 in this way, when airflow passes through the airflow channel 52, it will enter the imaging cavity to form intracavitary convection. The circulating intracavitary convection can remove moisture from the imaging cavity. It can be understood that, specifically, an isolation and water-permeable component 42 can be set in the imaging cavity to directly allow moisture to drain out, or the connector 23 can be directly sealed to make the imaging cavity a sealed cavity to directly prevent water vapor from entering.

[0035] Similarly, the outer casing 1 has a heat dissipation cavity in the light source section 12. The light source component 22 includes a light source, a condenser 221, a second lens 222, a heat-insulating glass 223, and a display screen 224, which are sequentially arranged in the heat dissipation cavity. The condenser 221 can be a reflector or a condensing lens. The second lens 222 can be a Fresnel lens or other types of lenses. The display screen 224 can be an LCD screen. A heat sink is also provided on the side of the light source away from the condenser 221. There is a certain interval between the condenser 221, the second lens 222, the heat-insulating glass 223, and the display screen 224 to form a branch airflow channel 52. It should be emphasized that this embodiment is only an exemplary example of the structure of the light source component 22. The specific structure of the light source component 22 can be adjusted according to actual needs. By arranging the light source component 22 in this way, a branch airflow channel 52 can also be formed between the light source components 22. The branch airflow channel 52 flows together with the main airflow channel 51 to the water-permeable isolation component 42 to remove the moisture between the light source components 22, further improving the water mist control effect.

[0036] Example 2

[0037] Reference Figure 5 The difference between this embodiment and embodiment one is that the structure of the water-permeable isolation component 42 in this embodiment is different from that in embodiment one.

[0038] Specifically, the water-permeable isolation component 42 includes a control valve 422, which is located on the side of the connecting channel 41 away from the outer casing 1. The control valve 422 is specifically a one-way water-permeable valve, and it can be controlled to open or close. By setting the control valve 422, when the water vapor content in the outer casing 1 is high, the control valve 422 is opened to allow internal moisture to drain out; when the water vapor content in the outer casing 1 is low, the control valve 422 can control the opening degree or close to prevent external moisture from entering the outer casing 1.

[0039] Example 3

[0040] On the other hand, this application provides a projection device, including a water mist control structure as described in Embodiment 1 or Embodiment 2. In this embodiment, the projection device further includes an external cooling fan disposed at the bottom of the water mist control structure.

[0041] Exemplary embodiments of this disclosure have been specifically shown and described above. It should be understood that this disclosure is not limited to the detailed structures, arrangements, or implementations described herein; rather, this disclosure is intended to cover various modifications and equivalent arrangements contained within the spirit and scope of the appended claims.

Claims

1. A water mist control structure, characterized in that, The device includes a housing (1), a projection component (2) disposed on the housing (1), and a heat dissipation component (3). The housing (1) is provided with a communication component (4). The communication component (4) includes a communication channel (41) and an isolation and water-permeable component (42) disposed on the communication channel (41). An airflow circulation channel (5) is formed between the heat dissipation component (3), the projection component (2), and the communication component (4). The airflow circulation channel (5) includes a main airflow channel (51).

2. The water mist control structure according to claim 1, characterized in that, The connecting channel (41) is disposed on the surface of the outer shell (1), and the connecting channel (41) connects the interior of the outer shell (1) with the exterior of the outer shell (1); the water-permeable isolation component (42) includes several layers of isolation units (421).

3. The water mist control structure according to claim 2, characterized in that, The isolation unit (421) comprises one or more layers of nylon, polyethersulfone, polyester, polyvinylidene fluoride, or expanded polytetrafluoroethylene.

4. The water mist control structure according to claim 1, characterized in that, The water-permeable isolation element (42) includes a control valve (422) located on the side of the communication channel (41) away from the housing (1).

5. A water mist control structure according to any one of claims 1-4, characterized in that, The heat dissipation assembly (3) includes an internal circulation fan (31) disposed on one side of the housing (1), and the communication channel (41) is located on the other side of the housing (1); the internal circulation fan (31) faces the communication channel (41).

6. The water mist control structure according to claim 5, characterized in that, The heat dissipation assembly (3) further includes a circulating radiator (32), which is disposed on one side of the outer casing (1), and the connecting channel (41) is disposed on the circulating radiator (32).

7. A water mist control structure according to any one of claims 1-4, characterized in that, The outer casing (1) has a display section (11) and a light source section (12), and a connecting section (13) is provided between the display section (11) and the light source section (12); the projection assembly (2) includes an imaging element (21) disposed on the display section (11), a light source element (22) disposed on the light source section (12), and a connector (23) disposed on the connecting section (13); the airflow circulation channel (5) further includes at least one branch airflow channel (52), the branch airflow channel (52) is located on one side of the main airflow channel (51); the branch airflow channel (52) passes through the projection assembly (2).

8. The water mist control structure according to claim 7, characterized in that, The connecting section (13) has a connecting cavity, and the connecting member (23) includes an optical housing (231) disposed in the connecting cavity and a first lens (232) disposed in the optical housing (231). The first lens (232) is fitted into the optical housing (231), and the branch airflow channel (52) is formed between the first lens (232) and the optical housing (231).

9. A water mist control structure according to claim 7, characterized in that, The light source (22) includes a light source, a condenser (221), a second lens (222), a heat-insulating glass (223), and a display screen (224) arranged in sequence; the tributary airflow channel (52) is formed between the condenser (221), the second lens (222), the heat-insulating glass (223), and the display screen (224).

10. A projection device, characterized in that, Including a water mist control structure as described in any one of claims 1-9.

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