Shell assembly and projection equipment

Abstract

The utility model relates to the field of projection, in particular to a shell assembly which is applied to projection equipment and comprises a base shell, a back shell and a plurality of flow guide parts. The base shell is provided with a light projection surface for emitting projection light; the back shell and the light projection surface are arranged in a back-to-back mode, and a heat dissipation opening is formed in the back shell in a penetrating mode; the flow guide pieces are arranged at the heat dissipation opening at intervals; an inclined flow guide area is formed between every two adjacent flow guide parts, and each inclined flow guide area is used for guiding airflow of the corresponding heat dissipation opening to flow out obliquely. The utility model further discloses projection equipment. The hot air flow can be prevented from directly blowing a user.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of projection technology, and in particular to a shell assembly and a projection device. BACKGROUND

[0002] With the increasing brightness of the projector, the heat dissipation design of the projector is constantly facing new challenges.

[0003] Currently, the projector discharges hot air flow by forming a heat dissipation opening. In a common use scenario, the hot air flow is prone to directly blowing towards the user, resulting in poor user experience. CONTENT OF THE UTILITY MODEL

[0004] The present disclosure discloses a shell assembly and a projector, which can effectively prevent hot air flow from directly blowing towards the user.

[0005] The first aspect of the present disclosure relates to a shell assembly applied to a projection device, comprising: a base shell having a light projection surface for emitting projection light; a back shell arranged opposite to the light projection surface and provided with a heat dissipation opening; a plurality of flow guides, each of the flow guides being arranged at intervals with each other in the heat dissipation opening; and an inclined flow guide area formed between each adjacent two flow guides, each of the inclined flow guide areas being used for guiding the air flow of the heat dissipation opening to flow out obliquely.

[0006] Optionally, each of the flow guides has a first surface and a second surface arranged oppositely along the arrangement direction of the plurality of flow guides; and the first surface and / or the second surface is / are inclined relative to the arrangement direction to form the inclined flow guide area.

[0007] Optionally, the first surface forms a first included angle θ1 with the arrangement direction, and 3°≤θ1≤30°; and / or, the second surface forms a second included angle θ2 with the arrangement direction, and 3°≤θ2≤30°.

[0008] Optionally, the inclined flow guide area is inclined along the arrangement direction of the plurality of flow guides.

[0009] Optionally, the flow guides are in the shape of long strips, and two ends of each of the flow guides are connected to the back shell respectively.

[0010] Optionally, the length extension direction of the flow guides is perpendicular to the arrangement direction of the plurality of flow guides.

[0011] Optionally, the interval between each adjacent two flow guides is 3mm-10mm; and / or, the interval between each adjacent two flow guides is the same; and / or, the thickness of the flow guides in the arrangement direction is 1.5mm-5mm; and / or, the thickness of each of the flow guides in the arrangement direction is the same.

[0012] Optionally, the base shell is provided with an air inlet, and the air inlet is communicated with the heat dissipation opening.

[0013] Optionally, the base shell comprises a front shell and a rear shell, the rear shell is connected between the front shell and the back shell, and the front shell and / or the rear shell is provided with the air inlet.

[0014] The second aspect of the present disclosure discloses a projection device comprising any of the shell assemblies described above.

[0015] Compared with the prior art, the embodiments of the present disclosure have the following beneficial effects: the present disclosure sets an inclined flow guide area on the back shell of the shell assembly to guide the airflow at the heat dissipation opening to flow out obliquely, thereby avoiding the hot airflow generated by the projection device using the shell assembly of the present disclosure from directly blowing on the user. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 It is a schematic diagram of the use scenario of the projector.

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the projection device of an embodiment of the present disclosure.

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the projection device of an embodiment of the present disclosure. Figure 2 It is a side view of the projection device.

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the projection device of an embodiment of the present disclosure. Figure 3 It is a partial side view of the projection device.

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the projection device of an embodiment of the present disclosure. Figure 2 It is a schematic diagram of the three-dimensional structure of the projection device of an embodiment of the present disclosure.

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the projection device of an embodiment of the present disclosure. Figure 5 It is a side view of the back shell and the flow guide piece.

[0023] Figure 7 It is a schematic diagram of the three-dimensional structure of the projection device of an embodiment of the present disclosure. Figure 6 It is a schematic diagram of the three-dimensional structure of the projection device of an embodiment of the present disclosure.

[0024] Figure 8 It is a side view of the back shell and the flow guide piece of the projection device of another embodiment of the present disclosure.

[0025] Figure 9Schematic view of the planar structure of the back shell and the flow guide in the projection device of another embodiment of the present disclosure.

[0026] Explanation of main element symbols

[0027] Projection device: 100, 101;

[0028] Housing assembly: 10;

[0029] Base shell: 11;

[0030] Front shell: 111;

[0031] Rear shell: 112;

[0032] Air inlet: 1111, 1121;

[0033] Light projecting surface: 113;

[0034] Projection window: 1131;

[0035] Back shell: 12;

[0036] Heat dissipation opening: 121;

[0037] Inclined flow guide area: 1211;

[0038] Flow guide: 13;

[0039] First surface: 131;

[0040] Second surface: 132;

[0041] Accommodation space: 14;

[0042] Projection light machine: 20;

[0043] Heat dissipation assembly: 30;

[0044] Heat sink: 31;

[0045] Fan: 32;

[0046] Axis: L;

[0047] Working plane: S;

[0048] Arrangement direction: X;

[0049] Length extension direction: Y;

[0050] Vertical direction: Z

[0051] Thickness: d1;

[0052] Spacing: d2;

[0053] First angle: θ1;

[0054] Second angle: θ2;

[0055] Table: 102;

[0056] Projection medium: 103;

[0057] Viewing area: 104.

[0058] The following detailed description will further describe the present application in conjunction with the above-mentioned figures. DETAILED DESCRIPTION

[0059] The technical solutions in the embodiments of the present disclosure will be described clearly and completely in conjunction with the figures in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present disclosure.

[0060] It should be noted that when a component is referred to as being "fixed" to another component, it can be directly on the other component or there can be an intervening component. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or there can be an intervening component. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are for illustrative purposes only.

[0061] It should be noted that the terms "first", "second", and the like used in the present disclosure are only used to distinguish different devices, modules or units, and are not intended to limit the order or interdependence of the functions performed by these devices, modules or units.

[0062] The projection device is used to project projection light onto the projection medium to make the projection medium surface present the projection image. Since the projection device generates a large amount of heat during operation, the projection device usually further includes a heat dissipation mechanism. During operation of the heat dissipation mechanism, hot air is continuously blown out to the outside through the heat dissipation port on the projection device.

[0063] Figure 1 The layout of the projection device 101 in a common home use scenario is shown. In the home use scenario, the projection device 101 is usually placed on a table 102 (such as a coffee table), the projection device 101 projects projection light towards the front projection medium 103 (such as a wall or a projection cloth), and the user is located in the viewing area 104 (such as a sofa or a seat) behind the projection device 101.

[0064] In order to avoid the influence of the hot air outlet on projection, the hot air outlet of the projection device 101 is arranged on the back shell 12 of the projection device 101. Therefore, in the projection device 101, the hot air outlet is arranged on the back shell 12 of the projection device 101. Figure 1In the shown use scenario, the projection device 101 directly blows hot air flow towards the user, causing a poor user experience.

[0065] The present disclosure improves the above-mentioned problem of direct blowing of hot air flow by setting the structure of the housing assembly of the projection device.

[0066] Please refer to Figure 2 , Figure 3 and Figure 4 , the projection device 100 of the embodiment comprises a housing assembly 10. The housing assembly 10 comprises a base shell 11, a back shell 12 and a plurality of flow guides 13. The base shell 11 comprises a front shell 111 and a rear shell 112. The rear shell 112 is connected between the back shell 12 and the front shell 111. The front shell 111, the rear shell 112 and the back shell 12 jointly enclose a containing space 14. The back shell 12 is provided with a heat dissipation opening 121 which communicates with the containing space 14. The plurality of flow guides 13 are sequentially and spacedly arranged at the heat dissipation opening 121. Each two adjacent flow guides 13 form an inclined flow guide area 1211 therebetween. The inclined flow guide area 1211 is used to guide the air flow of the heat dissipation opening 121 to flow out obliquely.

[0067] The present disclosure sets the inclined flow guide area 1211 on the back shell 12 of the housing assembly 10 to guide the air flow at the heat dissipation opening 121 to flow out obliquely, so that when the housing assembly 10 is applied to the projection device 100, the heat generated by the operation of the projection device 100 can flow out obliquely in the form of hot air flow from each inclined flow guide area 1211, avoiding the direct blowing of hot air flow to the user.

[0068] Please refer to Figure 5 In the embodiment, each flow guide 13 is sequentially and spacedly arranged in parallel along the arrangement direction X. Each flow guide 13 is in the shape of a strip, and the length extension direction Y of each flow guide 13 is perpendicular to the arrangement direction X. The arrangement direction X and the length extension direction Y are straight lines, and the arrangement direction X and the length extension direction Y define a plane. The heat dissipation opening 121 is rectangular, and the arrangement direction X and the length extension direction Y are parallel to two adjacent sides of the heat dissipation opening 121, respectively.

[0069] Each two adjacent flow guides 13 form a strip-shaped spacing area therebetween. Therefore, the entire back shell 12 forms a plurality of spacedly arranged spacing areas, and each spacing area defines an above-mentioned inclined flow guide area 1211.

[0070] Please refer to Figure 6 Each flow guide 13 has a first surface 131 and a second surface 132 which are oppositely arranged along the arrangement direction X. The first surface 131 and the second surface 132 are planes. The first surface 131 and the second surface 132 of each flow guide 13 are obliquely arranged (not perpendicular to the plane defined by the arrangement direction X and the length extension direction Y). For example, Figure 6The first surface 131 corresponds to the upper surface of the flow guide 13, and the second surface 132 corresponds to the lower surface of the flow guide 13.

[0071] Each inclined flow guide region 1211 in the present disclosure is formed by two adjacent flow guides 13, one of which has a first surface 131 and the other has a second surface 132. Therefore, the inclination direction of each inclined flow guide region 1211 is the inclination direction of the first surface 131 and the second surface 132 that form the inclined flow guide region 1211.

[0072] For each flow guide 13, at least one of the first surface 131 and the second surface 132 is not parallel to the vertical direction Z, which is perpendicular to the arrangement direction X and the length extension direction Y, respectively. In the present disclosure, "inclination" means not parallel to the vertical direction Z.

[0073] In some embodiments, referring to Figure 6 and Figure 7 , the first surface 131 and the second surface 132 of each flow guide 13 form a non-zero angle with the vertical direction Z.

[0074] The first surface 131 forms a first angle θ1 with the vertical direction Z, and the second surface 132 forms a second angle θ2 with the vertical direction Z. The first angle θ1 and the second angle θ2 can be the same or different. When the first angle θ1 and the second angle θ2 are the same, the first surface 131 and the second surface 132 are parallel to each other. In the present embodiment, the first surfaces 131 of the flow guides 13 are parallel to each other, and the second surfaces 132 of the flow guides 13 are parallel to each other. In other embodiments of the present disclosure, the first surfaces 131 of the flow guides 13 can be parallel to each other, and the second surfaces 132 of the flow guides 13 can not be parallel; or the first surfaces 131 of the flow guides 13 can not be parallel, and the second surfaces 132 of the flow guides 13 can be parallel to each other.

[0075] At least one of the first surface 131 and the second surface 132 is inclined to achieve the inclined flow of the hot air. Both the first surface 131 and the second surface 132 are inclined to better guide the hot air and make the hot air flow out more inclined. The first surface 131 and / or the second surface 132 are parallel to each other to facilitate the consistent direction of the hot air flow.

[0076] Since the inclined flow guide region 1211 between each adjacent arrangement of two flow guides 13 serves as an exhaust channel for the hot air, when the hot air is blown out of the heat dissipation port 121, the exhaust direction of the hot air is consistent with the inclination direction of the first surface 131 and the second surface 132 of each flow guide 13.

[0077] Therefore, the disclosure controls the specific diffusion direction of the hot air flow blown out from the heat dissipation port 121 by setting the sizes of the first included angle θ1 and the second included angle θ2. Among them, 3°≤θ1≤30° and / or 3°≤θ2≤30°.

[0078] For example, Figure 6 and Figure 7 In the embodiment shown in FIG. 12, the first angle θ1 is 12°, and the second angle θ2 is 3.7°. Each guide member 13 has an overall downwardly inclined angle, so that the hot air flow is blown out from each heat dissipation port 121 in a downwardly inclined manner (see the direction indicated by the dashed arrow in FIG. 13), avoiding direct blowing on the face. In addition, the above angle design is also beneficial to reducing the air outlet resistance, ensuring smooth heat dissipation, and also taking into account the appearance of the projection device. Figure 6

[0079] In some embodiments, the first included angle θ1 can be selected from any one or a range formed by any two of 3°, 5°, 10°, 15°, 20°, 25°, and 30°.

[0080] In some embodiments, the second included angle θ2 can be selected from any one or a range formed by any two of 3°, 5°, 10°, 15°, 20°, 25°, and 30°.

[0081] In some embodiments, the thickness d1 of each guide member 13 along the arrangement direction X can be the same or different, where d1=1.5mm-5mm. In the embodiment, the spacing d2 between each adjacent two guide members 13 (i.e., the width of the above spacing region along the arrangement direction X) can be the same or different, and d2=3mm-10mm. In other embodiments of the disclosure, the thicknesses of the guide members 13 can be different from each other, the spacing between each adjacent two guide members 13 can be different from each other, and the thickness d1 and the spacing d2 can also have other values. In the embodiment, by setting the thickness d1 of each guide member 13 along the arrangement direction X to be the same and the spacing d2 between each adjacent two guide members 13 to be the same, the hot air flow is evenly dissipated.

[0082] In some embodiments, the thickness d1 of each guide member 13 along the arrangement direction X can be selected from any one or a range formed by any two of 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, and 5mm.

[0083] In some embodiments, the spacing d2 between each adjacent two guide members 13 can be selected from any one or a range formed by any two of 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, and 10mm.

[0084] ​In some embodiments, the inclined air guiding region 1211 is inclined along the arrangement direction X of the plurality of air guiding members 13, such that the inclined air guiding region 1211 can guide the air flow to flow out to one side of the user, so as to avoid the air flow directly blowing to the user. Understandably, in a specific embodiment, referring to Figure 6 In other embodiments of the present disclosure, each inclined air guiding region 1211 can be inclined towards other directions along the arrangement direction X.

[0085] For example, the heat dissipation port 121 is rectangular, and each inclined air guiding region 1211 can be inclined towards any side of the heat dissipation port 121, such that the inclined air guiding region 1211 is inclined towards a plane which is not perpendicular to the arrangement direction X and the length extension direction Y (i.e. not parallel to the vertical direction Z). In other embodiments of the present disclosure, the heat dissipation port 121 can also be triangular, circular, N-sided (N≥3), etc. Each inclined air guiding region 1211 can be inclined towards any side of the heat dissipation port 121, such that the inclined air guiding region 1211 is inclined towards a plane which is not perpendicular to the arrangement direction X and the length extension direction Y (i.e. not parallel to the vertical direction Z).

[0086] By setting the inclined directions of each inclined air guiding region 1211 to be consistent, the air flow dissipation direction can be made consistent. In the present embodiment, each inclined air guiding region 1211 is inclined towards the obliquely downward direction, which is beneficial to reduce the influence of the hot air flow on the user.

[0087] For example, referring to Figure 8 In at least one embodiment of the present disclosure, each air guiding member 13 can also present an overall obliquely upward inclined angle, so as to achieve the obliquely blowing of the hot air flow and avoid directly blowing to the user.

[0088] For example, referring to Figure 9 In at least one embodiment of the present disclosure, each air guiding member 13 can also be arranged along the length extension direction Y in sequence, and each air guiding member 13 extends along the arrangement direction X. In this embodiment, one of the first surface 131 and the second surface 132 corresponds to the left surface of the air guiding member 13, and the other corresponds to the right surface of the air guiding member 13. In this embodiment, the air guiding member 13 presents an overall leftward or rightward inclined angle, so as to achieve the obliquely blowing of the hot air flow and avoid directly blowing to the user.

[0089] In some embodiments, referring to Figures 2 to 4The rear shell 112 includes four side surfaces connected vertically in sequence. The rear shell 112 is provided with an air inlet 1121 on at least one side surface. In this embodiment, the rear shell 112 is provided with a plurality of air inlets 1121 arranged densely on two opposite side surfaces, and each air inlet 1121 is a circular opening communicating with the containing space 14. In other embodiments of the present disclosure, the air inlets 1121 can have other arrangements and other shapes. In other embodiments of the present disclosure, the front shell 111 can also be provided with air inlets 1111.

[0090] In some embodiments, referring to Figure 2 The front shell 111 has a light projection surface 113. The light projection surface 113 is arranged opposite to the rear shell 12 and is parallel to each other. The light projection surface 113 is formed with a projection window 1131 for projecting the projection light, and the projection window 1131 is made of glass or plastic, for example. In this embodiment, the projection window 1131 is circular. The projection window 1131 is used to project the projection light out of the shell assembly 10.

[0091] In some embodiments, referring to Figure 3 The projection device 100 further includes a projection light machine 20 and a heat dissipation assembly 30 located in the shell assembly 10. The projection light machine 20 and the heat dissipation assembly 30 are located in the containing space 14 and fixed to the inner wall of the shell assembly 10. The projection light machine 20 is used to generate the projection light. The projection light machine 20 can include optical elements such as light sources, light guiding elements, and light modulators. The projection light machine 20 generates heat during operation, and the heat dissipation assembly 30 is used to dissipate heat for the projection light machine 20 and blow hot air out of the shell assembly 10. In this embodiment, the heat dissipation assembly 30 includes a heat sink 31 and a fan 132, and the fan 132 is located between the heat sink 31 and the projection light machine 20. In other embodiments of the present disclosure, the heat sink 31 can be located between the fan 132 and the projection light machine 20.

[0092] In some embodiments, referring to Figures 2 to 4 The shell assembly 10 further includes a holder 15 connected to the base shell 11. The holder 15 includes a support 151 and a base 152. One end of the support 151 is movably connected to the base shell 11, and the other end is movably connected to the base 152. The base shell 11, the rear shell 12, the flow guide 13, the projection light machine 20, and the heat dissipation assembly 30 are collectively defined as a projection part. When the projection device 100 is in use, the base 152 can be placed on a work plane S such as a tea table, a table top, or the ground, and the support 151 is used to support the projection part on the base 152 and make the projection part suspended relative to the base 152.

[0093] In some embodiments, referring to Figures 2 to 4The bottom of the support 151 is movably connected to the base 152, and the two sides of the support 151 are movably connected to the opposite two sides of the projection part, respectively. The projection part and the support 21 can rotate (also referred to as horizontal rotation) on the working plane S relative to the base 22 as a whole, and the projection part can also rotate (also referred to as vertical rotation) around the shaft L relative to the support 21 and the base 22.

[0094] Referring to Figures 2 to 4 The projection device 100 of the present disclosure includes a housing assembly 10, which includes a back shell 12 provided with a heat dissipation opening 121, and each flow guide 13 is arranged in the heat dissipation opening 121, and an inclined flow guide area 1211 is formed between each adjacent two flow guides 13. During the working process of the heat dissipation assembly 30 in the housing assembly 10, the hot air flow blown out by the heat dissipation assembly 30 is discharged through the heat dissipation opening 121. Since an inclined flow guide area 1211 is formed between each adjacent two flow guides 13, the hot air flow discharged from the heat dissipation opening 121 is not vertically diffused, but obliquely diffused, and the hot air flow is obliquely blown out of the housing assembly 10, which can effectively avoid the hot air flow directly blowing on the user, so that the projection device 100 of the present disclosure is beneficial to improve the user experience.

[0095] The above description is only an embodiment of the present disclosure, and does not limit the patent scope of the present disclosure, and any equivalent structure or equivalent process transformation using the content of the present disclosure specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present disclosure.

Claims

1. A housing assembly applied to a projection device, characterized in that, The shell assembly comprises: a base shell having a light projection surface for light projection to exit; a back shell disposed opposite to the light projection surface and provided with a plurality of heat dissipation openings; a plurality of flow guide members, each of the flow guide members is spaced apart from each other and disposed in the heat dissipation openings, and each adjacent two of the flow guide members forms an inclined flow guide area for guiding the airflow of the heat dissipation openings to flow out obliquely.

2. The housing assembly of claim 1, wherein, Each of the flow guide members has a first surface and a second surface disposed opposite to each other along the arrangement direction of the plurality of flow guide members, and the first surface and / or the second surface is / are inclined relative to the arrangement direction to form the inclined flow guide area.

3. The housing assembly of claim 2, wherein, The first surface forms a first included angle θ1 with the arrangement direction, and 3°≤θ1≤30°; and / or The second surface forms a second included angle θ2 with the arrangement direction, and 3°≤θ2≤30°.

4. The housing assembly of claim 1, wherein, The inclined flow guide area is inclined along the arrangement direction of the plurality of flow guide members.

5. The housing assembly of claim 1, wherein, The flow guide member is in a strip shape, and two ends of each of the flow guide members are connected to the back shell.

6. The housing assembly of claim 5, wherein, The length extension direction of the flow guide member is perpendicular to the arrangement direction of the plurality of flow guide members.

7. The housing assembly of claim 1, wherein, The spacing between each adjacent two of the flow guide members is 3mm-10mm; and / or The spacing between each adjacent two of the flow guide members is the same; and / or The thickness of the flow guide member in the arrangement direction is 1.5mm-5mm; and / or The thickness of each of the flow guide members in the arrangement direction is the same.

8. The housing assembly of any one of claims 1-7, wherein, The base shell is provided with an air inlet opening, and the air inlet opening is in communication with the heat dissipation openings.

9. The housing assembly of claim 8, wherein, The base shell comprises a front shell and a rear shell, the rear shell is connected between the front shell and the back shell, and the front shell and / or the rear shell is / are provided with the air inlet opening.

10. A projection apparatus, characterized by, The shell assembly comprises the shell assembly according to any one of claims 1-9.

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