Support module and projection device

Abstract

The utility model discloses a supporting module and a projection device. The supporting module comprises a shielding piece and a foot pad assembly. The shielding piece is arranged in the projection device and comprises a protective wall and a surrounding wall, the protective wall is connected to the periphery of one end of the surrounding wall, the protective wall and the surrounding wall jointly define a channel, the other end of the surrounding wall is connected with a bottom cover of the projection device and is provided with an opening communicated with the channel, and the opening corresponds to the opening of the bottom cover, so that the channel is communicated with the outside of the projection device; the foot pad assembly is detachably screwed to the projection device and comprises a rod piece and a foot pad, the foot pad is fixed to the fixed end of the rod piece, and the free end of the rod piece selectively extends into the channel through the opening and the hole. When the rod piece is screwed on the projection device, the second thread part of the rod piece is screwed with the first thread part of the shade piece, and the foot pad is located outside the projection device. Therefore, by means of the design of the supporting module, the foot pad assembly can be selectively removed from the projection device according to the diverse requirements of a user for installing the projection device, and the practical application is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to a support module and a projection device, in particular to a support module and a projection device adopting the same, which can meet the diversified needs of users in installing the projection device. BACKGROUND

[0002] The bottom of the projection device is usually provided with a foot pad assembly, and the arrangement angle of the projection device is adjusted by the foot pad assembly, so as to change the angle of projecting the projection image, so as to meet different projection needs. Among them, the existing foot pad assembly usually includes a screw rod and a nut, one end of the screw rod is provided with a foot pad, the nut is glued and fixed in the projection device, the other end of the screw rod away from the foot pad passes through the screw hole of the bottom shell of the projection device, and is locked by the nut in the projection device, so that the screw rod is blocked when it is about to be rotated away from the bottom of the projection device, so that the foot pad assembly cannot be rotated and removed from the bottom of the projection device.

[0003] Therefore, the existing foot pad assembly is designed to adjust the arrangement angle of the projection device, and then change the angle of projecting the projection image, and does not further consider the diversified needs (such as removing the foot pad assembly) when installing the projection device, so that it is difficult to meet the needs of users.

[0004] The "BACKGROUND" section is only used to help understand the content of the utility model, so the content disclosed in the "BACKGROUND" section may include some known technology known to those skilled in the art. The content disclosed in the "BACKGROUND" section does not represent that the content or the problems to be solved by one or more embodiments of the utility model have been known or recognized by those skilled in the art before the utility model application. UTILITY MODEL CONTENT

[0005] The utility model provides a kind of support module, the diversified needs of user installation projection device can be met, so that foot pad assembly can be selectively removed from projection device, so as to meet practical application.

[0006] The utility model further provides a kind of projection device, which includes the support module described above, and can meet the diversified needs of user installation projection device, so that foot pad assembly can be selectively removed from projection device, so as to meet practical application.

[0007] Other purposes and advantages of the utility model can be further understood from the technical features disclosed in the utility model.

[0008] To achieve one or some or all of the above purposes or other purposes, an embodiment of the present application provides a support module applied to a projection device and comprising a cover member and a foot pad assembly. The cover member is arranged in the projection device and comprises a protection wall and a surrounding wall. The surrounding wall has opposite first and second ends. The protection wall is located at the first end of the surrounding wall and connected to the periphery of the surrounding wall. The protection wall and the surrounding wall jointly define a channel. The channel extends from the first end to the second end of the surrounding wall along a first direction. The second end of the surrounding wall is connected to the bottom cover of the projection device and has an opening in communication with the channel. The opening corresponds to an opening hole of the bottom cover, so that the channel is in communication with the outside of the projection device. The cover member has a first threaded portion. The foot pad assembly is removably screwed to the projection device. The foot pad assembly comprises a rod and a foot pad. The rod has opposite fixed and free ends. The foot pad is fixed to the fixed end of the rod. The free end of the rod selectively extends into the channel through the opening and the opening hole. The rod has a second threaded portion. When the rod is screwed to the projection device, the second threaded portion of the rod and the first threaded portion of the cover member are screwed to each other, and the foot pad is located outside the projection device.

[0009] To achieve one or some or all of the above purposes or other purposes, an embodiment of the present application further provides a projection device comprising a bottom cover, at least three cover members and at least three foot pad assemblies. The bottom cover is provided with at least three opening holes. The at least three cover members are arranged in the projection device and correspond to the at least three opening holes one by one. The at least three foot pad assemblies are arranged one by one with the at least three cover members and are removably screwed to the at least three cover members respectively. Each cover member comprises a protection wall and a surrounding wall. The surrounding wall has opposite first and second ends. The protection wall is located at the first end of the surrounding wall and connected to the periphery of the surrounding wall. The protection wall and the surrounding wall jointly define a channel. The channel extends from the first end to the second end of the surrounding wall along a first direction. The second end of the surrounding wall is connected to the bottom cover of the projection device and has an opening in communication with the channel. The opening corresponds to one of the at least three opening holes of the bottom cover, so that the channel is in communication with the outside of the projection device. The cover member has a first threaded portion. Each foot pad assembly comprises a rod and a foot pad. The rod has opposite fixed and free ends. The foot pad is fixed to the fixed end of the rod. The free end of the rod selectively extends into the channel through the corresponding opening and the corresponding opening hole. The rod has a second threaded portion. When the rod is screwed to the projection device, the second threaded portion of the rod and the first threaded portion of the corresponding cover member are screwed to each other, and the foot pad is located outside the projection device.

[0010] Based on the above, the embodiments of this utility model have at least one of the following advantages or effects. In the design of the support module and projection device of this utility model, the rod of the foot pad assembly selectively extends into the channel of the mask through the opening of the mask and the opening of the bottom cover of the projection device, and the second threaded portion of the rod of the foot pad assembly selectively engages with the first threaded portion of the mask. Since the foot pad assembly is removably screwed into the mask disposed in the projection device, in addition to adjusting the angle of the projected image projected by the projection device, the foot pad assembly can also be selectively removed from the projection device to meet the diverse needs of users installing the projection device, thereby conforming to practical applications.

[0011] To make the above-mentioned features and advantages of this utility model more apparent and understandable, specific embodiments are described below, and detailed descriptions are provided in conjunction with the accompanying drawings. Attached Figure Description

[0012] Figure 1 This is a perspective view of an embodiment of the support module of this utility model applied to a projection device.

[0013] Figure 2 for Figure 1 An exploded view of an embodiment of the support module applied to a projection device.

[0014] Figure 3 for Figure 2 A combination diagram.

[0015] Figure 4 for Figure 3 A magnified view of a portion of region A.

[0016] Figure 5 for Figure 4 A three-dimensional cross-sectional view.

[0017] Figure 6 for Figure 4 Cross-sectional view of the midline segment BB'.

[0018] Figure 7 This is a three-dimensional schematic diagram of the foot pad assembly of this utility model.

[0019] Figure 8 This is a perspective cross-sectional view of an embodiment of the support module of this utility model applied to a projection device.

[0020] Figure 9 This is a perspective cross-sectional view of another embodiment of the support module of this utility model applied to a projection device.

[0021] Figure 10 This is a perspective cross-sectional view of another embodiment of the support module of this utility model applied to a projection device.

[0022] Explanation of reference numerals in the attached figures

[0023] 1: projection device

[0024] 100: support module

[0025] 110: shield

[0026] 111: protection wall

[0027] 112: surrounding wall

[0028] 112a: first end

[0029] 112b: second end

[0030] 113: passage

[0031] 114: opening

[0032] 115: first threaded portion

[0033] 116: housing portion

[0034] 120: foot pad assembly

[0035] 121: rod member

[0036] 121a: fixed end

[0037] 121b: free end

[0038] 122: foot pad

[0039] 123: second threaded portion

[0040] 124: non-threaded portion

[0041] 130, 214, 300: nut

[0042] 200: top cover

[0043] 210: bottom cover

[0044] 212: aperture

[0045] 50: vent hole

[0046] 60: alignment structure

[0047] 60a, 60b, 60c: protrusion

[0048] A: area

[0049] BB': line segment

[0050] L1, L2: length

[0051] X, Y, Z: axial direction

[0052] θ: inclination angle Detailed Implementation

[0053] The foregoing and other technical contents, features, and effects of this utility model will be clearly presented in the following detailed description of the preferred embodiments with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as up, down, left, right, front, or back, are only for reference to the accompanying drawings. Therefore, the directional terms used are for illustrative purposes and not for limiting the scope of this utility model.

[0054] Please see Figures 1 to 3 , Figure 1 This is a perspective view of an embodiment of the support module of this utility model applied to a projection device. Figure 2 for Figure 1 An exploded view of an embodiment of a support module applied to a projection device. Figure 3 for Figure 2 A combination diagram. For example... Figures 1 to 3 As shown, the projection device 1 includes a top cover 200 and a bottom cover 210. The top cover 200 and the bottom cover 210, when assembled, form a space (not shown). The light source, optical components, electronic components, heat dissipation components, and optical engine of the projection device 1 are disposed in the space. The support module 100 is applied to the projection device 1 and includes a mask 110 and a foot pad assembly 120. Specifically, the projection device 1 also includes at least three support modules 100, namely at least three mask 110s and at least three foot pad assemblies 120. The bottom cover 210 is provided with at least three openings 212. The at least three mask 110s are disposed in the space of the projection device 1 and are disposed in a one-to-one correspondence with the at least three openings 212. The at least three foot pad assemblies 120 are disposed in a one-to-one correspondence with the at least three mask 110s and can be screwed onto the at least three mask 110s respectively. The at least three foot pad assemblies 120 can also be removed from the at least three mask 110s. In this design, the long side of the bottom cover 210 is defined as the X-axis, the short side of the bottom cover 210 is defined as the Z-axis, the thickness of the projection device 1 is defined as the Y-axis, the X-axis, Y-axis and Z-axis are orthogonal to each other, the direction in which the foot pad assembly 120 is removed from the projection device 1 is defined as the positive Y-axis direction, and the negative Y-axis direction is the direction towards the inside of the projection device 1.

[0055] In the present embodiment, the number of support modules 100 and the number of openings 212 of the bottom cover 210 can both be four (i.e. the number of cover members 110 and the number of foot pad assemblies 120 can also both be four), wherein the four openings 212 are respectively located at four corners of the bottom cover 210, and the four support modules 100 respectively correspond to the four openings 212. In other embodiments, the number of support modules 100 and the number of openings 212 of the bottom cover 210 can both be three, wherein two of the three openings 212 are respectively located at two corners corresponding to one long side of the bottom cover 210, and one of the three openings 212 is located at a central position adjacent to the other long side of the bottom cover 210, and the three support modules 100 respectively correspond to the three openings 212, but the present disclosure is not limited thereto. Since the plurality of support modules 100 in the above embodiments are very similar or even identical to each other, the structural design of one of the support modules 100 and the cover member 110 and the foot pad assembly 120 included therein will be described in detail below, and the structural design of the other support modules 100 can be inferred accordingly.

[0056] Please refer to Figures 4 to 6 , Figure 4 for Figure 3 a partial enlarged view of the area A, Figure 5 for Figure 4 a perspective sectional view of the cover member 110, Figure 6 for Figure 4 a sectional view of the center line segment BB'. As Figures 4 to 6As shown, the cover 110 includes a protection wall 111 and a surrounding wall 112, the surrounding wall 112 has opposite first and second ends 112a and 112b, the protection wall 111 is located at the first end 112a of the surrounding wall 112 and connected to the periphery of the surrounding wall 112, the protection wall 111 and the surrounding wall 112 jointly define a channel 113, the channel 113 extends from the first end 112a to the second end 112b of the surrounding wall 112 along the first direction (i.e. the positive Y-axis direction), the second end 112b of the surrounding wall 112 is connected to the bottom cover 210 of the projection device 1 and has an opening 114 (i.e. the opening 114 is formed in the direction of the bottom cover 210 of the projection device 1) which communicates with the channel 113, the opening 114 corresponds to one of the at least three openings 212 of the bottom cover 210, so that the channel 113 communicates with the outside of the projection device 1, i.e. the channel 113 can communicate with the outside of the projection device 1 through the opening 114 and the opening 212; wherein the aperture of the opening 114 can be equal to the aperture of the opening 212, the aperture of the channel 113 can be less than or equal to the aperture of the opening 212, the contour of the opening 114 and the contour of the opening 212 can be but not limited to circular or circular-like; the second end 112b of the surrounding wall 112 can be connected to the bottom cover 210 of the projection device 1 in a manner of welding, bonding, clamping or any other suitable connection manner; the outer surface of the surrounding wall 112 extends outward along the periphery thereof to form a positioning structure 60 for positioning and connecting with the bottom cover 210 of the projection device 1, the positioning structure 60 can include a protruding portion 60a, a protruding portion 60b and a protruding portion 60c, the protruding portion 60a and the protruding portion 60b are arranged at an interval of 180 degrees, the protruding portion 60a and the protruding portion 60c are arranged at an interval of 90 degrees, and the protruding portion 60b and the protruding portion 60c are arranged at an interval of 90 degrees, the cover 110 can be positioned and connected to the bottom cover 210 of the projection device 1 by the angle configuration between the protruding portion 60a, the protruding portion 60b and the protruding portion 60c (for example: the extending direction of the protruding portion 60a and the protruding portion 60b is perpendicular to the long side of the bottom cover 210, and the extending direction of the protruding portion 60c is perpendicular to the short side of the bottom cover 210); the channel 113 can extend along the Y-axis, but if the user has special needs, the channel 113 can also extend obliquely relative to the Y-axis.

[0057] Please refer to Figures 5 to 7 , Figure 7 The utility model is a foot pad assembly. Figures 5 to 7As shown, the foot pad assembly 120 includes a rod 121 having opposite fixed end 121a and free end 121b, and a foot pad 122 fixed to the fixed end 121a of the rod 121. The free end 121b of the rod 121 selectively extends into the passage 113 of the cover 210 through the corresponding aperture 212 of the cover 210 and the corresponding opening 114 of the cover 110. The rod 121 has a second threaded portion 123. When the foot pad assembly 120 is screwed to the projection device 1, the second threaded portion 123 of the rod 121 is screwed to the first threaded portion 115 of the cover 110 and the foot pad 122 is located outside the projection device 1.

[0058] In the present embodiment, when the rod 121 of the foot pad assembly 120 is screwed to the cover 110 of the projection device 1, the foot pad 122 can be rotated to drive the rod 121 to rotate, thereby adjusting the height or the inclination angle of the projection device 1. When the rod 121 is rotated to disengage the second threaded portion 123 from the first threaded portion 115, the foot pad assembly 120 can be removed from the cover 210 of the projection device 1 and the cover 110, thereby being removed from the projection device 1 (i.e., the foot pad assembly 120 is removably screwed to the projection device 1). In addition, in order to remove the foot pad assembly 120 from the projection device 1, the free end 121b of the rod 121 does not have any elements (e.g., elements with a diameter greater than the diameter of the passage 113) that prevent the rod 121 from being removed from the passage 113, thereby avoiding the problem that the existing foot pad assembly cannot be rotated due to the locking of the nut fixed to the projection device. That is, the rod 121 of the foot pad assembly 120 can be removed from the passage 113 (opening 114) of the cover 110 and the aperture 212 of the cover 210.

[0059] In an embodiment, when the rod 121 is screwed to the projection device 1, the rod 121 can be used to rotate relative to the cover 110 to move in the first direction (i.e., the positive Y-axis direction) or in the opposite direction of the first direction (i.e., the negative Y-axis direction) in the passage 113 (as shown). Figure 5

[0060] In an embodiment, the outer surface of the rod 121 can include the second threaded portion 123 and a non-threaded portion 124. The second threaded portion 123 can be provided with external threads, and the non-threaded portion 124 can be disposed between the second threaded portion 123 and the foot pad 122 fixed to the fixed end 121a of the rod 121 (as shown), but the present disclosure is not limited thereto. Figure 7

[0061] In an embodiment, the cover 110 can include the first threaded portion 115 and a receiving portion 116. The first threaded portion 115 can be internal threads provided on the inner wall of the passage 113, and the receiving portion 116 can be a non-threaded portion of the passage 113. The inner wall of the passage 113 corresponding to the receiving portion 116 can be a smooth surface (as shown), but the present disclosure is not limited thereto.​​Figure 6 In other words, the inner wall of a portion of the passage 113 is provided with internal threads, and the inner wall of another portion of the passage 113 is not provided with internal threads and is a smooth surface, so that the external threads of at least a portion of the second threaded portion 123 of the rod 121 can be screwed with the internal threads provided on at least a portion of the inner wall of the passage 113.

[0062] Figure 8 For an embodiment of the support module of the present application applied to a projection device, in this embodiment, the formation mode of the internal threads provided on the inner wall of the passage 113 corresponding to the first threaded portion 115 can be to directly form threaded grooves on the inner wall of the passage 113, thereby machining the internal threads. In addition, Figure 8 The cover member 110 and the bottom cover 210 of the projection device 1 are two-piece designs, and therefore, in other embodiments, threaded grooves can also be directly formed on the side walls of the respective openings 212 of the bottom cover 210, thereby machining the same internal threads as the first threaded portion 115 of the cover member 110, so that when the second end 112b of the surrounding wall 112 is connected to the bottom cover 210 of the projection device 1, the internal threads provided on the inner wall of the passage 113 and the threaded grooves formed on the side walls of the corresponding openings 212 jointly form continuous and same-specification internal threads.

[0063] In another embodiment, the first threaded portion 115 of the cover member 110 can be a nut 130 with internal threads fixedly embedded on the inner wall of the passage 113. Specifically, each support module 100 can further include a nut 130, and the nut 130 is arranged in the cover member 110 and located at a position adjacent to the opening 114 of the passage 113 or at the position of the opening 114, to serve as the first threaded portion 115 of the cover member 110, and the entire inner wall of the passage 113 can be a smooth surface without internal threads (as Figure 5 When the rod 121 of the foot pad assembly 120 is screwed into the cover member 110 arranged in the projection device 1, the free end 121b of the rod 121 passes through the nut 130 arranged in the cover member 110, so that the second threaded portion 123 of the rod 121 is screwed with the nut 130 serving as the first threaded portion 115 of the cover member 110. In addition, Figure 5The cover 210 of the projection device 1 is two-piece design with the cover 210 and the shield 110. Therefore, the side wall of each opening 212 of the cover 210 can also be embedded with a nut 214 having the same internal thread as the first threaded portion 115 of the shield 110. When the second end 112b of the surrounding wall 112 is connected to the cover 210 of the projection device 1, the nut 130 of the first threaded portion 115 of the shield 110 and the nut 214 embedded in the side wall of the opening 212 can both correspond to the second threaded portion 123 of the rod 121. The first threaded portion 115 and the internal thread of the nut 214 corresponding to the opening 212 together form a continuous and same specification internal thread.

[0064] In an embodiment, the shield 110 can be provided with a ventilation hole 50 communicating with the passage 113. The hole diameter of the ventilation hole 50 is smaller than the hole diameter of the passage 113 and the hole diameter of the opening 114, and the hole diameter of the ventilation hole 50 is smaller than the diameter of the free end 121b of the rod 121. In this embodiment, specifically, the protection wall 111 of the shield 110 is provided with a ventilation hole 50 (for example: Figure 5The protective wall 111 is provided with a vent 50, which connects the channel 113 to the interior of the projection device 1. Because the vent 50 connects the channel 113 to the interior of the projection device 1, when the rod 121 rotates relative to the shield 110 and moves in the channel 113 in the opposite direction of the first direction (i.e., the negative Y-axis direction), the air in the channel 113 can be smoothly discharged through the vent 50. This avoids the situation where, if the vent 50 is not provided, the rod 121 would compress the air in the channel 113 when moving in the opposite direction of the first direction, creating resistance and causing the rod 121 and the foot pad 122 to be unstable or difficult to adjust. Furthermore, by designing the vent hole 50 to have a smaller diameter than the channel 113 and the opening 114, even if the user removes the foot pad assembly 120 for use or installation of the projection device 1, exposing the channel 113 where the foot pad assembly 120 was originally installed on the outer surface of the projection device 1, the channel 113 only has the vent hole 50, and the diameter of the vent hole 50 is smaller than the diameter of the channel 113 and the opening 114. This effectively prevents internal parts of the projection device 1 from falling out through the vent hole 50 due to sparks or burning, or external objects from falling into the projection device 1 through the vent hole 50, thus meeting safety requirements. For example, the diameter of the channel 113 and the opening 114 can be 6 millimeters (mm), and the diameter of the vent hole 50 can be 2.5 mm, meaning the diameter of the vent hole 50 is less than half the diameter of the channel 113, but this is not a limitation. In other embodiments, the shield 110 may have a vent hole on the surrounding wall 112, the vent hole of the surrounding wall 112 connecting the channel 113 and the interior of the projection device 1, so that when the rod 121 moves relative to the channel 113 of the shield 110, the air in the channel 113 can be smoothly discharged from the vent hole.

[0065] In one embodiment, the maximum length of the rod 121 extending into the channel 113 may be less than the length L1 of the channel 113 in the first direction (i.e., the positive Y-axis direction). Figure 6 (As shown). The maximum length of the rod 121 extending into the channel 113 can be, but is not limited to, the length L2 of the second threaded portion 123 on the Y-axis (e.g., ...). Figure 7 (As shown). In this embodiment, the rod 121 is configured such that when it is rotated into the channel 113 to its limit, it cannot pass through the vent 50 provided on the protective wall 111, so as to prevent the diameter of the vent 50 from being enlarged due to the rod 121 entering the vent 50 (e.g., Figure 5 (As shown).

[0066] In one embodiment, the surrounding wall 112 may be conical and may gradually expand outward from the protective wall 111 along a first direction (i.e., the positive Y-axis direction). Figure 6(As shown). The conical design surrounding the wall 112 ensures good demolding properties when the mask part 110 is manufactured using injection molding, thereby improving production efficiency.

[0067] In one embodiment, the aperture of channel 113 may gradually increase from the protective wall 111 along a first direction (i.e., the positive Y-axis direction) (e.g. Figure 6 (As shown). In other words, channel 113 can be a conical channel. When both channel 113 and surrounding wall 112 are conical, the thickness of surrounding wall 112 can be made uniform.

[0068] In one embodiment, the surrounding wall 112 may have an inclination angle θ relative to an axis parallel to the first direction (i.e., the positive Y-axis direction), the inclination angle θ being, but not limited to, 7 degrees to 10 degrees (e.g., ...). Figure 6 (As shown). The first direction is, for example, the direction of movement of the rod 121 within the channel 113.

[0069] In one embodiment, the mask 110 and the bottom cover 210 of the projection device 1 may be made of the same material (e.g., plastic).

[0070] In the above Figures 1 to 8 In one embodiment, the mask 110 and the bottom cover 210 of the projection device 1 are two-piece designs, but this utility model is not limited thereto. In other embodiments, the mask 110 and the bottom cover 210 of the projection device 1 can be integrally formed (e.g. Figure 9 and Figure 10 (As shown). Figure 9 This is a perspective cross-sectional view of another embodiment of the support module of this utility model applied to a projection device. Figure 10 This is a perspective cross-sectional view of another embodiment of the support module of this utility model applied to a projection device, which reduces costs and assembly time by reducing the assembly of the mask 110 and the bottom cover 210 of the projection device 1; for example, the mask 110 and the bottom cover 210 of the projection device 1 can be integrally formed from plastic material. In one embodiment, after the mask 110 and the bottom cover 210 of the projection device 1 are integrally formed, threaded grooves can be directly formed on the inner wall of the channel 113 and the side wall of the corresponding opening 212, thereby processing continuous and identical internal threads (e.g., ...). Figure 9 As shown), it is used to engage with the second threaded portion 123 of the rod 121 of the foot pad assembly 120. In another embodiment, when the shield 110 and the bottom cover 210 of the projection device 1 are integrally formed, a single nut 300 is embedded during the manufacturing process of the shield 110 and the bottom cover 210 of the projection device 1 to form continuous and identical internal threads (such as...). Figure 10 (As shown), for engaging with the second threaded portion 123 of the rod 121 of the foot pad assembly 120.

[0071] In summary, the support module and the projection device of the embodiments of the present application have at least one of the following advantages: the rod of the foot pad assembly selectively extends into the channel of the cover through the opening of the cover and the opening of the bottom cover of the projection device, and the second threaded portion of the rod of the foot pad assembly selectively screws with the first threaded portion of the cover (i.e., the foot pad assembly is removably screwed to the cover arranged in the projection device), so that the foot pad assembly can be removed from the projection device according to the multi-element needs of the user installing the projection device, in addition to adjusting the angle of the projection device projecting the projection picture, thereby meeting the actual application. In addition, the cover is provided with the air hole, so that when the rod rotates relative to the cover and moves in the opposite direction of the first direction in the channel, the air in the channel can be smoothly discharged from the air hole. Furthermore, the diameter of the air hole is smaller than the diameters of the channel and the opening, which effectively prevents the internal parts of the projection device from falling out through the air hole due to sparks or burning, or external objects of the projection device from falling into the internal part of the projection device through the air hole, thereby meeting the safety requirements. In addition, the maximum length of the rod extending into the channel is smaller than the length of the channel in the first direction, which avoids the diameter of the air hole being enlarged due to the rod entering the air hole. Moreover, the cover and the bottom cover of the projection device can be a two-piece design or an integral design; when the cover and the bottom cover of the projection device are integrally formed, the cost can be reduced and the assembly of the cover and the bottom cover of the projection device can be reduced, thereby reducing the assembly time.

[0072] However, the above only describes the preferred embodiments of the present application, and cannot limit the scope of the present application. Any simple equivalent changes and modifications made according to the claims and the description of the present application are still within the scope of the present application. In addition, any embodiment or claim of the present application does not necessarily achieve all the purposes or advantages or features disclosed in the present application. In addition, the abstract and title are only used to assist patent document searching, and are not used to limit the scope of the present application. In addition, the terms "first", "second", etc. mentioned in the specification or claims are only used to name elements or distinguish different embodiments or ranges, and are not used to limit the upper or lower limit of the number of elements.

Claims

1. A support module applied to a projection device, characterized in that, The support module comprises a cover and a foot pad assembly. The cover is disposed in the projection device, and comprises a protection wall and a surrounding wall. The surrounding wall has opposite first and second ends. The protection wall is located at the first end of the surrounding wall and connected to the periphery of the surrounding wall. The protection wall and the surrounding wall jointly define a channel. The channel extends from the first end to the second end of the surrounding wall along a first direction. The second end of the surrounding wall is connected to a bottom cover of the projection device, and the second end has an opening in communication with the channel. The opening corresponds to an opening hole of the bottom cover, so that the channel is in communication with the outside of the projection device. The cover has a first threaded portion. The foot pad assembly is removably screwed to the projection device. The foot pad assembly comprises a rod and a foot pad. The rod has opposite fixed and free ends. The foot pad is fixed to the fixed end of the rod. The free end of the rod selectively extends into the channel through the opening and the opening hole. The rod has a second threaded portion. When the rod is screwed to the projection device, the second threaded portion of the rod and the first threaded portion of the cover are screwed to each other, and the foot pad is located outside the projection device.

2. The support module of claim 1, wherein, An outer surface of the rod comprises the second threaded portion and a non-threaded portion.

3. The support module of claim 1, wherein, The cover is provided with a ventilation hole in communication with the channel. The ventilation hole has a smaller diameter than the channel and the opening.

4. The support module of claim 1, wherein, A maximum length of the rod extending into the channel is smaller than a length of the channel in the first direction.

5. The support module of claim 1, wherein, The channel comprises the first threaded portion and a receiving portion. The first threaded portion is an internal thread provided on an inner wall of the channel. The inner wall of the channel corresponding to the receiving portion is a smooth surface.

6. The support module of claim 1, wherein, The support module further comprises a nut. The nut is disposed at a position adjacent to or at the opening of the channel, and serves as the first threaded portion of the cover. The inner wall of the channel is a smooth surface.

7. The support module of claim 6, wherein, When the rod is screwed to the projection device, the free end of the rod passes through the nut, so that the second threaded portion of the rod and the nut serving as the first threaded portion of the cover are screwed to each other.

8. The support module of claim 1, wherein, The surrounding wall is conical and gradually expands outward along the first direction from the protection wall.

9. Support module according to claim 1 or 8, characterized in that The diameter of the channel gradually increases along the first direction from the protection wall.

10. The support module of claim 8, wherein, The surrounding wall has an inclination angle relative to an axis parallel to the first direction. The inclination angle is 7 to 10 degrees.

11. The support module of claim 1, wherein, When the rod is screwed to the projection device, the rod is used to rotate relative to the cover to move in the channel along the first direction or in the opposite direction of the first direction.

12. The support module of claim 1, wherein, The cover and the bottom cover of the projection device are integrally formed.

13. A projection apparatus, characterized by comprising: The projection device comprises a bottom cover, at least three covers and at least three foot pad assemblies. The bottom cover is provided with at least three opening holes. The at least three cover members are disposed in the projection device and correspond to the at least three openings one by one, and the at least three foot pad assemblies are disposed in the at least three cover members one by one and are removably screwed to the at least three cover members, respectively. Each of the at least three cover members comprises a protection wall and a surrounding wall, wherein the surrounding wall has opposite first and second ends, the protection wall is located at the first end of the surrounding wall and connected to the periphery of the surrounding wall, the protection wall and the surrounding wall jointly define a channel, the channel extends from the first end to the second end of the surrounding wall along a first direction, the second end of the surrounding wall is connected to the bottom cover of the projection device and has an opening in communication with the channel, the opening corresponds to one of the at least three openings of the bottom cover, so that the channel is in communication with the outside of the projection device, the cover member has a first threaded portion, and Each of the at least three foot pad assemblies comprises a rod and a foot pad, the rod has opposite fixed and free ends, the foot pad is fixed to the fixed end of the rod, the free end of the rod selectively extends into the channel through the corresponding opening and the corresponding opening, the rod has a second threaded portion, when the rod is screwed to the projection device, the second threaded portion of the rod and the first threaded portion of the corresponding cover member are screwed to each other, and the foot pad is located outside the projection device.

14. The projection apparatus according to claim 13, wherein, The channel of each of the at least three cover members comprises the first threaded portion and a receiving portion, the first threaded portion is an internal thread provided on the inner wall of the channel, and the inner wall of the channel corresponding to the receiving portion is a smooth surface.

15. The projection apparatus according to claim 13, wherein, The projection device further comprises at least three nuts, the at least three nuts are arranged in the at least three cover members, respectively, wherein each of the at least three nuts is arranged at a position adjacent to the opening of the channel or at the opening of the channel, so as to serve as the first threaded portion of the cover member, and the inner wall of the channel is a smooth surface.

16. The projection apparatus according to claim 13, wherein Each of the at least three cover members is provided with an air hole in communication with the channel, the air hole has a diameter smaller than that of the channel and that of the corresponding opening.

17. The projection apparatus of claim 13, wherein The maximum length of the rod of each of the at least three foot pad assemblies extending into the corresponding channel is smaller than the length of the corresponding channel in the first direction.

18. The projection apparatus of claim 13, wherein When the rod is screwed to the projection device, the rod is used to rotate relative to the cover member to move in the channel along the first direction or in the opposite direction of the first direction.

19. The projection apparatus of claim 13, wherein The surrounding wall has an inclination angle of 7 to 10 degrees relative to an axis parallel to the first direction.

20. The projection apparatus of claim 13, wherein The at least three cover members are integrally formed with the bottom cover.

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