Projection device, shell structure and protective net structure

Abstract

The invention provides a projection device. The projection device comprises a shell structure and a protective net structure. The shell structure comprises a shell, at least one limiting structure and at least one stopping structure. The casing comprises a plurality of side covers, and the side covers form an accommodating space. The limiting structure is connected to one of the side covers and located in the containing space, and at least one limiting groove is formed between the side cover and the limiting structure. The stopping structure is connected to the side cover and protrudes towards the containing space, and the limiting structure and the stopping structure are connected to the inner surface of the side cover. The protective net structure comprises a protective net body and at least one protective net limiting part. The protective net body is used for being installed in the containing space and at least partially limited in the limiting groove. The protective net limiting part is connected to the protective net body and abuts against the stop structure of the shell structure so as to prevent the protective net structure from being separated from the shell structure. According to the projection device, the shell structure and the protective net structure, a user can selectively disassemble and assemble the protective net on the projection device according to requirements.

Description

Technical Field

[0001] The invention relates to an optical device and a housing structure and a protective net structure thereof, and in particular to a projection device and a housing structure and a protective net structure thereof. Background Art

[0002] Today's projection devices are generally placed horizontally on a desktop or hung on the ceiling. Some projection devices can project an image beam onto a projection target (such as a wall or a projection screen) when the housing is tilted or flipped according to the needs of the user. However, when the projection device is in a tilted or flipped state, its air inlet or outlet may face upward, making it easy for foreign objects to pass through the air inlet or outlet and fall into the projection device. In order to overcome this problem, some projection devices are equipped with a protective net on the inside of the air inlet or outlet. The protective net is usually fixed to the inside of the projection device in advance by hot melting, screw locking or snapping. The user cannot selectively disassemble the protective net, which makes the projection device and its protective net lack flexibility in use.

[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 prior art that is 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 projection device, a shell structure and a protection net structure, so that a user can selectively disassemble and assemble the protection net on the projection device according to needs.

[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-mentioned purposes or other purposes, one embodiment of the present invention provides a projection device for selectively installing a protective net structure. The projection device includes a shell structure and a protective net structure. The shell structure includes a casing, at least one limiting structure and at least one stopping structure. The casing includes a plurality of side covers, which form a receiving space. The limiting structure is connected to one of the side covers and is located in the receiving space, and at least one limiting groove is formed between the side cover and the limiting structure. The stopping structure is connected to the side cover and protrudes into the receiving space, and the limiting structure and the stopping structure are respectively connected to an inner surface of the side cover. The protective net structure includes a protective net body and at least one protective net limiting portion. The protective net body is used to be installed in the receiving space, and at least a part of the protective net body is limited in the limiting groove. The protective net limiting portion is connected to the protective net body and abuts against the stopping structure of the shell structure to prevent the protective net structure from detaching from the shell structure.

[0007] In order to achieve one or part or all of the above-mentioned purposes or other purposes, one embodiment of the present invention proposes a shell structure for selectively installing a protective net structure. The shell structure includes a casing, at least one limiting structure and at least one stopping structure. The casing includes a plurality of side covers, and these side covers form an accommodating space. The limiting structure is connected to one of these side covers and is located in the accommodating space. At least one limiting groove is formed between the side cover and the limiting structure, and the limiting groove is used to limit the protective net structure. The stopping structure is connected to the side cover and protrudes into the accommodating space, and the limiting structure and the stopping structure are respectively connected to an inner surface of the side cover, and the stopping structure is used to prevent the protective net structure from detaching from the shell structure.

[0008] In order to achieve one or part or all of the above-mentioned purposes or other purposes, an embodiment of the present invention provides a protective net structure for selectively being installed on a shell structure of a projection device. The protective net structure includes a protective net body and at least one protective net limiting portion. The protective net body is used to be installed in a accommodating space of the shell structure. One end of the protective net limiting portion is connected to the protective net body, the protective net limiting portion is bent relative to the protective net body, and the protective net limiting portion is used to abut against a stop structure of the shell structure.

[0009] Based on the above, the embodiments of the present invention have at least one of the following advantages or effects. In the projection device of the embodiment of the present invention, the side cover of the housing structure of the housing has a limiting structure and a stopper structure, so that the protective net structure is well installed on the housing by limiting the position of the protective net structure by the limiting structure, and the protective net structure is prevented from being separated from the housing structure by stopping the protective net structure by the stopper structure. Accordingly, the user can easily disassemble and assemble the protective net structure according to needs, so that the projection device and its protective net structure have high flexibility in use.

[0010] In order to make the above features and advantages of the present invention more clearly understood, embodiments are given below with reference to the accompanying drawings for detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 FIG. 1 is a schematic diagram of a projection device according to an embodiment of the present invention.

[0012] Figure 2 yes Figure 1 Bottom view of the projection device.

[0013] Figure 3 yes Figure 2 A three-dimensional exploded view of the projection device.

[0014] Figure 4 yes Figure 2 A stereoscopic diagram of the partial structure of the projection device.

[0015] Figure 5 yes Figure 2 A bottom view of the partial structure of the projection device.

[0016] Figure 6 yes Figure 2 A side view of the partial structure of the projection device.

[0017] Figure 7 yes Figure 4 Top view of the protective net structure.

[0018] Figure 8 yes Figure 2 A stereoscopic diagram of the partial structure of the projection device.

[0019] Fig. 9 Draw Figure 8 The protective net structure was removed.

[0020] Fig.10 yes Figure 3 A partial enlarged schematic diagram of the protective net structure.

[0021] Reference numerals list

[0022] 100: Projection device

[0023] 110: Light source

[0024] 120: Light valve

[0025] 130: Projection lens

[0026] 140: Shell structure

[0027] 142: Chassis

[0028] 1421: Top cover

[0029] 1422: Bottom cover

[0030] 1422a: Installation slot

[0031] 1423: Side cover

[0032] 1423a: Inner surface

[0033] 1423b: Air inlet (or outlet)

[0034] 144: Limiting structure

[0035] 1441: Limiting slot

[0036] 146: Stop structure

[0037] 150:Protective net structure

[0038] 152: Protective net body

[0039] 152a: First end

[0040] 152b: Second end

[0041] 1521: Stepped structure

[0042] 1522:Handheld

[0043] 154: Protection net limiter

[0044] B1: Lighting beam

[0045] B2: Image beam

[0046] E1: Connection end

[0047] E2: Free end

[0048] H: Mesh

[0049] L1, L3: Distance

[0050] L2: Length

[0051] P: Positioning unit

[0052] R: Arc chamfer

[0053] S: Accommodation space

[0054] W: Width

[0055] X, Y, Z: axial directions. DETAILED DESCRIPTION

[0056] The above and 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.

[0057] Figure 1 is a schematic diagram of a projection device according to an embodiment of the present invention. Figure 1 The projection device 100 of this embodiment includes a light source 110, a light valve 120, and a projection lens 130. The light source 110 is used to provide an illumination beam B1, the light valve 120 is located on the transmission path of the illumination beam B1 and is used to convert the illumination beam B1 into an image beam B2, the projection lens 130 is located on the transmission path of the image beam B2, and the projection lens 130 is used to project the image beam B2 out of the projection device 100 and onto a projection target, such as a screen or a wall.

[0058] In the present embodiment, the light source 110 includes at least one light emitting element. The light source 110 may also be equipped with at least one of a wavelength conversion element, a light homogenization element, a light filtering element, and at least one light guide element to provide light beams of different wavelengths as the source of the illumination light beam B1. The at least one light emitting element may be a light emitting diode (LED) or a laser diode (LD) or a combination thereof. The present invention does not limit the type or form of the light source 110.

[0059] The light valve 120 may be a reflective light modulator such as a liquid crystal on silicon panel or a digital micro-mirror device. Alternatively, the light valve 120 may 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 kind of the light valve 120.

[0060] The projection lens 130 may include a combination of one or more optical lenses with refractive power, such as 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 projection lens 130 may also include a planar optical lens to project the image beam B2 out of the projection device 100 in a reflective manner. The present invention does not limit the type and type of the projection lens 130.

[0061] Figure 2 yes Figure 1 A bottom view of the projection device showing the axes X, Y and Z. Figure 3 yes Figure 2 3D exploded view of the projection device. Please refer to Figure 2 and Figure 3 The projection device 100 of this embodiment includes a housing structure 140 and a protection net structure 150. The protection net structure 150 is a detachable protection net structure, that is, the protection net structure 150 can be selectively installed on the projection device 100. Specifically, the housing structure 140 includes a housing 142, and the housing 142 includes a top cover 1421, a bottom cover 1422 and a plurality of side covers 1423. The top cover 1421, the bottom cover 1422 and the plurality of side covers 1423 are connected to form a receiving space S. Figure 1The light source 110, the light valve 120 and the projection lens 130 are disposed in the accommodation space S. The housing 142 has a mounting slot 1422a on its bottom cover 1422, and the protection net structure 150 is used to be inserted into the accommodation space S along the axial direction Z from the mounting slot 1422a.

[0062] Figure 4 yes Figure 2 A stereoscopic diagram of the partial structure of the projection device. Figure 5 yes Figure 2 A bottom view of the partial structure of the projection device. Figure 6 yes Figure 2 A side view of the partial structure of the projection device. Please refer to Figures 4 to 6 The housing structure 140 of this embodiment further includes at least one limiting structure 144 (shown as a plurality) and at least one stopping structure 146 (shown as two). The limiting structure 144 is connected to one of the side covers 1423 and is located in the accommodation space S. A limiting groove 1441 is formed between the side cover 1423 and each limiting structure 144. Figure 5 As shown, the stop structure 146 is connected to the side cover 1423 and protrudes toward the accommodation space S along the axial direction X, and the limiting structure 144 and the stop structure 146 are respectively connected to the same inner surface 1423a of the side cover 1423. That is, the limiting structure 144 and the stop structure 146 are both connected to the same side cover 1423.

[0063] The protective net structure 150 includes a protective net body 152 and at least one protective net limiting portion 154 (two are shown). The protective net body 152 is used to be installed in the accommodating space S, and at least a portion of the protective net body 152 is limited in the limiting groove 1441. The protective net limiting portion 154 is connected to the protective net body 152 and abuts against the stopper structure 146 of the shell structure 140 to prevent the protective net structure 150 from being separated from the shell structure 140.

[0064] As described above, the side cover 1423 of the housing 142 of this embodiment has a limiting structure 144 and a stopping structure 146. The limiting structure 144 limits the protection net structure 150 so that the protection net structure 150 is well installed on the housing 142, and the stopping structure 146 stops the protection net structure 150 so that the protection net structure 150 is prevented from being separated from the housing structure 140. Therefore, the user can easily disassemble and assemble the protection net structure 150 according to the needs, so that the projection device 100 and its protection net structure 150 have high flexibility in use.

[0065] For example, when the user wants to flip the projection device 100 to perform a vertical projection mode (Portrait Mode), the air inlet (or air outlet) 1423b of the side cover 1423 of the housing 142 of the shell structure 140 is facing upward, that is, when the side cover 1423 with the air inlet (or air outlet) 1423b is configured as the top surface of the housing 142, for example Figure 3 When the axis X of the side cover 1423 is parallel to the gravity direction. The user can install the protective net structure 150 on the housing 142 as described above to prevent foreign matter from falling into the projection device 100 through the air inlet (or air outlet) 1423b. On the contrary, when the user wants to project the projection device 100 in a horizontal state and the air inlet (or air outlet) 1423b of the side cover 1423 is not facing upward, for example Figure 3 When the axis Z is parallel to the gravity direction, the user can remove the protective net structure 150 from the housing 142. Further, with the above design of this embodiment, the user can selectively purchase the protective net structure 150 or not when purchasing the projection device 100 according to needs.

[0066] In this embodiment, the width W (indicated at Figure 2 ) for example, greater than 0 mm and less than or equal to 1 mm. Accordingly, the installation slot 1422a will not affect the structural strength of the housing 142 due to its excessive volume, and foreign matter can be prevented from entering the housing 142 through the installation slot 1422a. The installation slot 1422a can be provided so that the protection net structure 150 does not affect the appearance of the projection device 100 after being installed on the projection device 100. In other embodiments, the installation slot 1422a can also be provided on the top cover 1421 of the housing 142.

[0067] Figure 7 yes Figure 4 Top view of the protective net structure. Please refer to Figure 2 and Figure 7 , the protective net body 152 of this embodiment has a stepped structure 1521, and the installation slot 1422a has a positioning unit P corresponding to the stepped structure 1521. Specifically, a local section of the installation slot 1422a is stepped corresponding to the stepped structure 1521 to form the positioning unit P. The positioning unit P can be, for example, a positioning structure such as a positioning rod, a positioning protrusion, or a positioning block. Accordingly, the mutual cooperation between the protective net body 152 and the installation slot 1422a has directionality, thereby achieving a foolproof effect and preventing the user from installing the protective net structure 150 in the wrong direction.

[0068] Please refer to Figure 3 and Figure 4The periphery of the protective net body 152 of this embodiment has an arc-shaped chamfer R to prevent the user from touching the sharp corners and causing discomfort when picking up the protective net structure 150. In addition, the protective net body 152 has a first end 152a and a second end 152b opposite to each other. The protective net body 152 is used to be inserted into the accommodating space S from the first end 152a. The protective net structure 150 also includes a hand-held portion 1522 connected to the second end 152b of the protective net body 152. The hand-held portion 1522 is used for the user to hold it, so as to facilitate the disassembly and assembly of the protective net structure 150.

[0069] The structure of the protective net limiting portion 154 of this embodiment is described in more detail below. Figure 8 yes Figure 2 A stereoscopic diagram of the partial structure of the projection device. Fig. 9 Draw Figure 8 The protective net structure has been removed. Please refer to Figure 8 and Fig. 9 In this embodiment, one end of the protective net limiting portion 154 is connected to the protective net body 152, and the protective net limiting portion 154 is bent relative to the protective net body 152. When the protective net structure 150 is installed on the housing structure 140, the protective net limiting portion 154 is bent relative to the protective net body 152 toward the side cover 1423 connected to the limiting structure 144 and the stop structure 146 and abuts against the stop structure 146. More specifically, the protective net limiting portion 154 has a connecting end E1 and a free end E2, the connecting end E1 is connected to the protective net body 152, and the stop structure 146 protrudes from the inner surface 1423a of the side cover 1423 of the housing 142 to stop the free end E2 of the protective net limiting portion 154.

[0070] In this embodiment, the protective net structure 150 and its protective net limiting portion 154 are made of, for example, an elastic material (such as plastic). Therefore, during the process of installing or disassembling the protective net structure 150 along the axial direction Z, the protective net limiting portion 154 can pass over the stop structure 146 by elastic deformation, so that the protective net structure 150 can be smoothly installed or disassembled.

[0071] Please refer to Figure 6 In this embodiment, the distance L1 between the free end E2 of the protective net limiting portion 154 and the inner surface 1423a of the side cover 1423 connected to the limiting structure 144 and the stopping structure 146 is less than the protruding length L2 of the stopping structure 146 from the inner surface 1423a, so that the stopping structure 146 can smoothly stop the free end E2 of the protective net limiting portion 154. In addition, the distance L3 between the limiting structure 144 and the inner surface 1423a is greater than the protruding length L2 of the stopping structure 146 from the inner surface 1423a, so that the limiting structure 144 can smoothly limit the protective net structure 150 in the axial direction X, and prevent the protective net structure 150 from deflecting during the installation process.

[0072] Fig.10 yes Figure 3 A partial enlarged schematic diagram of the protective net structure. Figures 3 to 9 The mesh of the protective net structure 150 is not shown, but in fact, at least most of the area of ​​the protective net structure 150 is as shown in FIG. Fig.10 As shown, the protective net structure 150 has a plurality of mesh holes H, which can achieve a ventilation effect. In this way, the protective net structure 150 of this embodiment will not affect the heat dissipation of the projection device 100 after being installed on the projection device 100. Further, the protective net stopper 154 is, for example, cut from the protective net body 152 and also has mesh holes H. The length of the mesh holes H in any direction is, for example, less than 5 mm.

[0073] In summary, the embodiments of the present invention have at least one of the following advantages or effects. In the projection device of the embodiment of the present invention, the side cover of the housing has a limiting structure and a stopping structure, so that the limiting structure limits the position of the protective net structure so that the protective net structure is well installed on the housing, and the stopping structure stops the protective net structure so that the protective net structure is prevented from being separated from the housing structure. Accordingly, the user can easily disassemble and assemble the protective net structure according to needs, so that the projection device and its protective net structure have high flexibility in use.

[0074] The above description is only a preferred embodiment of the present invention, and cannot be used to limit the scope of the implementation of the present invention. That is, all simple equivalent changes and modifications made in accordance with the claims and the description 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 have to achieve all the purposes, advantages or features disclosed in the present invention. In addition, the abstract of the specification and the name of the invention 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 of the number of elements.

Claims

1. A projection device, characterized in that: For selectively installing a protective net structure, the projection device comprises a housing structure and a protective net structure, wherein: The housing structure includes a casing, at least one limiting structure and at least one stopping structure. The housing includes a plurality of side covers, and the plurality of side covers form a receiving space; The at least one limiting structure is connected to one of the plurality of side covers and is located in the accommodating space, wherein at least one limiting groove is formed between the side cover and the at least one limiting structure; and The at least one stop structure is connected to the side cover and protrudes toward the accommodating space, wherein the at least one limiting structure and the at least one stop structure are respectively connected to the inner surface of the side cover; and The protective net structure includes a protective net body and at least one protective net limiting portion. The protection net body is used to be installed in the accommodating space, wherein at least a portion of the protection net body is limited in the at least one limiting groove; and The at least one protection net limiting portion is connected to the protection net body and abuts against the at least one stop structure of the shell structure to prevent the protection net structure from separating from the shell structure.

2. The projection device according to claim 1, characterized in that: The housing has an installation slot, and the protective net structure is used to be inserted into the accommodating space from the installation slot.

3. The projection device according to claim 2, characterized in that: The width of the installation slot is greater than 0 mm and less than or equal to 1 mm.

4. The projection device according to claim 2, characterized in that: The protective net body has a stepped structure, and the mounting slot has a positioning unit corresponding to the stepped structure.

5. The projection device according to claim 1, characterized in that: The periphery of the protective net body has an arc-shaped chamfer.

6. The projection device according to claim 1, characterized in that: The protection net body has a first end and a second end opposite to each other, and the protection net body is used to be inserted into the accommodating space from the first end. The protection net structure also includes a hand-held portion, and the hand-held portion is connected to the second end.

7. The projection device according to claim 1, characterized in that: One end of the at least one protection net limiting portion is connected to the protection net body, and the at least one protection net limiting portion is bent toward the side cover relative to the protection net body and abuts against the at least one stop structure.

8. The projection device according to claim 1, characterized in that: The at least one protective net limiting portion has a connecting end and a free end, the connecting end is connected to the protective net body, the at least one stopping structure protrudes from the inner surface of the casing, and the distance between the free end and the inner surface is less than the protruding length of the at least one stopping structure from the inner surface.

9. The projection device according to claim 1, characterized in that: The distance between the at least one limiting structure and the inner surface is greater than the protruding length of the at least one stopping structure from the inner surface.

10. A housing structure, characterized in that: For selectively installing a protective net structure, the housing structure includes a housing, at least one limiting structure and at least one stopping structure, wherein: The housing includes a plurality of side covers, and the plurality of side covers form a receiving space; The at least one limiting structure is connected to one of the plurality of side covers and is located in the accommodating space, wherein at least one limiting groove is formed between the side cover and the at least one limiting structure, and the at least one limiting groove is used to limit the protective net structure; and The at least one stop structure is connected to the side cover and protrudes toward the accommodating space, wherein the at least one limiting structure and the at least one stop structure are respectively connected to the inner surface of the side cover, and the at least one stop structure is used to prevent the protective net structure from separating from the shell structure.

11. The housing structure according to claim 10, characterized in that: The housing has an installation slot, and the protective net structure is used to be inserted into the accommodating space from the installation slot.

12. The housing structure according to claim 11, characterized in that: The width of the installation slot is greater than 0 mm and less than or equal to 1 mm.

13. The housing structure according to claim 11, characterized in that: The installation slot has a positioning unit corresponding to the stepped structure of the protection net body.

14. The housing structure according to claim 10, characterized in that: The distance between the at least one limiting structure and the inner surface is greater than the protruding length of the at least one stopping structure from the inner surface.

15. A protective net structure, characterized in that: A housing structure for selectively being mounted on a projection device, wherein the protection net structure comprises a protection net body and at least one protection net limiting portion, wherein: The protective net body is used to be installed in the accommodating space of the shell structure; and One end of the at least one protective net limiting portion is connected to the protective net body, the at least one protective net limiting portion is bent relative to the protective net body, and the at least one protective net limiting portion is used to resist at least one stop structure of the shell structure.

16. The protective net structure according to claim 15, characterized in that: The protective net body has a stepped structure, and the stepped structure is used to be arranged on the positioning unit of the mounting slot of the shell structure.

17. The protective net structure according to claim 15, characterized in that: The periphery of the protective net body has an arc-shaped chamfer.

18. The protective net structure according to claim 15, characterized in that: The protection net body has a first end and a second end opposite to each other, and the protection net body is used to be inserted into the accommodating space from the first end. The protection net structure also includes a hand-held portion, and the hand-held portion is connected to the second end.

19. The protective net structure according to claim 15, characterized in that: The at least one protective net limiting portion has a connecting end and a free end, the connecting end is connected to the protective net body, and the distance between the free end and the inner surface is smaller than the protruding length of the at least one stop structure of the shell structure from the inner surface.

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