Heat dissipation device and display device

Abstract

A heat dissipation device includes a housing mechanism, a sliding mechanism and a linkage mechanism. The housing mechanism is provided with a receiving cavity and a heat dissipation hole communicating with the receiving cavity. The sliding mechanism includes a sliding member and a rack, the sliding member is located in the receiving cavity and is slidably connected to one side of the housing mechanism provided with the heat dissipation hole, and the rack is fixedly connected to the sliding member. The linkage mechanism includes a rotating shaft and a gear, the rotating shaft is located on the same side of the rack as the sliding member, the rotating shaft is fixedly connected to the housing mechanism, and the gear is rotatably sleeved on the rotating shaft and engaged with the rack, the gear is used to drive the sliding member to slide relative to the heat dissipation hole through the rack to adjust the area of the sliding member shielding the heat dissipation hole. The application also discloses a display device including the heat dissipation device, and the heat dissipation device can improve the heat dissipation performance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat dissipation, in particular to a heat dissipation device and a display device. BACKGROUND

[0002] With the upgrading of virtual reality (VR) and augmented reality (AR) technologies, virtual reality and augmented reality are becoming more and more popular with people for their rich experiences. Virtual reality technology is a computer simulation system that can create and experience a virtual world. It uses computer-generated simulation environments, which are multi-source information fusion interactive three-dimensional dynamic views and entity behavior systems, allowing users to immerse themselves in the environment. In the prior art, people experience the virtual reality world by wearing VR glasses. Augmented reality technology applies virtual information to the real world through computer technology, and real-time superimposes virtual objects on the real environment in the same picture or space, enhancing people's sensory experience.

[0003] Display devices (such as VR glasses / AR glasses) capable of realizing virtual reality (VR) and augmented reality (AR) generally need to integrate electronic components into a housing. The housings in the prior art are mostly closed structures or have fixed-area heat dissipation openings, and the heat dissipation effect is poor. The accumulation of heat inside the housing during use of the electronic components can affect performance. SUMMARY

[0004] Therefore, it is necessary to provide a heat dissipation device capable of improving heat dissipation performance.

[0005] Embodiments of the present application provide a heat dissipation device, which comprises a housing mechanism, a sliding mechanism and a linkage mechanism. The housing mechanism is provided with a receiving cavity and a heat dissipation hole communicating with the receiving cavity. The sliding mechanism comprises a sliding member and a rack. The sliding member is located in the receiving cavity and is slidably connected to one side of the housing mechanism provided with the heat dissipation hole. The rack is fixedly connected to the sliding member. The linkage mechanism comprises a rotating shaft and a gear. The rotating shaft and the rack are arranged on the same side of the sliding member. The rotating shaft is fixedly connected to the housing mechanism. The gear is rotatably sleeved on the rotating shaft and engaged with the rack. The gear is used to drive the sliding member to slide relative to the heat dissipation hole through the rack, so as to adjust the area of the heat dissipation hole blocked by the sliding member.

[0006] In some embodiments of the present application, the linkage mechanism further comprises a linkage member and a toggle member. The linkage member is rotatably sleeved on the rotating shaft. The toggle member has a first sleeving portion at one end thereof and is located outside the housing mechanism at the other end thereof. The first sleeving portion is rotatably sleeved on the rotating shaft. The linkage member comprises a sleeve portion and first and second clamping portions connected to two sides of the sleeve portion. In the axial direction of the rotating shaft, the sleeve portion is slidably arranged between the gear and the first sleeving portion. The first clamping portion extends from the sleeve portion towards the gear. The first clamping portion is used to selectively extend into or out of the tooth groove of the gear. The second clamping portion extends from the sleeve portion towards the first sleeving portion. The second clamping portion is slidably and limitingly connected to the first sleeving portion.

[0007] In some embodiments of the present application, the first sleeving portion is provided with a first limiting groove extending along the axial direction of the rotating shaft. The opening of the first limiting groove faces the sleeve portion. The second clamping portion is slidably and limitingly connected in the first limiting groove.

[0008] In some embodiments of the present application, the linkage member further comprises a control portion. One end of the control portion is connected to the sleeve portion away from the peripheral surface of the rotating shaft. The other end of the control portion extends to the outside of the housing mechanism in the radial direction of the rotating shaft. The control portion is used to drive the sleeve portion to slide between the gear and the first sleeving portion.

[0009] In some embodiments of the present application, the rotating shaft comprises coaxially arranged first and second shaft portions. The first and second shaft portions are arranged at intervals. The toggle member is further provided with a second sleeving portion arranged at an interval from the first sleeving portion at one end thereof. The gear, the linkage member and the first sleeving portion are sleeved on the first shaft portion. The second sleeving portion is sleeved on the second shaft portion.

[0010] In some embodiments of the present application, the rotating shaft further comprises a bolt connected to the first shaft portion. The bolt comprises a screw rod and a nut connected in sequence. The screw rod is coaxially arranged with the first shaft portion. The screw rod is fixedly connected to the end portion of the first shaft portion. The nut is arranged at an interval from the first shaft portion. The gear is rotatably sleeved on the screw rod and located between the nut and the first shaft portion.

[0011] In some embodiments of the present application, the linkage mechanism further comprises a fixing member. One end of the fixing member is fixedly connected to the housing mechanism. The other end of the fixing member is provided with two third and fourth sleeving portions arranged at intervals. The third sleeving portion is sleeved on the first shaft portion and located on the side of the first sleeving portion away from the linkage member. The fourth sleeving portion is sleeved on the second shaft portion and arranged adjacent to the second sleeving portion.

[0012] In some embodiments of the present application, the heat dissipation hole comprises a plurality of first strip-shaped holes arranged at intervals along a first direction. The sliding member is provided with a plurality of second strip-shaped holes arranged at intervals along the first direction. The surface of the sliding member facing the heat dissipation hole is provided with a first area separated from the second strip-shaped holes. The first direction is perpendicular to the axial direction of the rotating shaft. The sliding member slides relative to the heat dissipation hole so that the second strip-shaped holes are in one-to-one correspondence with the first strip-shaped holes or the first area blocks the first strip-shaped holes.

[0013] In some embodiments of the present application, the sliding member can reciprocate relative to the housing mechanism along the first direction between a first position and a second position. When the sliding member is in the first position, the first strip-shaped holes completely overlap the first area. When the sliding member is in the second position, the first strip-shaped holes completely overlap the second strip-shaped holes. The sliding member moves from the first position towards the second position to reduce the area of the sliding member blocking the heat dissipation hole, and the sliding member moves from the second position towards the first position to increase the area of the sliding member blocking the heat dissipation hole.

[0014] In some embodiments of the present application, the housing mechanism comprises a first housing, a second housing and a cover. The first housing and the second housing are connected to each other and define the accommodation cavity and an opening located on one side of the accommodation cavity. The cover covers the opening, the heat dissipation hole is formed on the cover, and the sliding member is slidably connected to the side of the cover facing the accommodation cavity.

[0015] In some embodiments of the present application, the first housing comprises a bottom wall and a rear wall bent relative to the bottom wall. The second housing comprises a front wall and two connecting walls connected to one side of the front wall and arranged at intervals. The side of the bottom wall away from the rear wall is connected to the side of the front wall away from the connecting walls, and the side of the connecting walls away from the front wall is connected to the rear wall. The opening is formed between the front wall, the rear wall and the two connecting walls. The side of the two connecting walls facing each other is respectively provided with a sliding groove, and the two ends of the sliding member are slidably connected in the sliding grooves. The side of the rear wall away from the bottom wall is provided with a avoiding opening, the rotating shaft is arranged in the avoiding opening, and the rack extends out of the accommodation cavity through the avoiding opening.

[0016] In some embodiments of the present application, the connecting walls and the bottom wall are arranged at intervals and define a bayonet. The bayonet is formed between the front wall, the rear wall, the connecting walls and the bottom wall. The cover comprises a top wall and clamping walls connected to the two sides of the top wall and bent relative to the top wall. The sliding member is slidably connected to the side of the top wall facing the accommodation cavity and located between the two clamping walls, and the clamping walls are clamped in the bayonet.

[0017] The embodiment of the present application further provides a display device, comprising an electronic element, a lens mechanism and the heat dissipation device in any of the above embodiments. The electronic element is accommodated in the accommodation cavity, the lens mechanism is connected to the shell mechanism and electrically connected to the electronic element, and the heat dissipation device is used for displaying images.

[0018] In the heat dissipation device and the display device, the sliding member slides relative to the heat dissipation hole to adjust the area of the heat dissipation hole blocked by the sliding member, the gear and the rack are linked to improve the sliding precision of the sliding member relative to the heat dissipation hole, the area of the heat dissipation hole blocked by the sliding member is accurately adjusted, the area of the heat dissipation hole communicated with the outside can be dynamically adjusted according to the temperature in the accommodation cavity, and the heat dissipation performance is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 FIG. 1 is a structure schematic diagram of a first state of a heat dissipation device according to an embodiment of the present application, in which a sliding member is in a first position.

[0020] Figure 2 FIG. 2 is a structure schematic diagram of a first split structure of the heat dissipation device according to the embodiment of the present application.

[0021] Figure 3 FIG. 3 is a structure schematic diagram of an explosion of the heat dissipation device according to the embodiment of the present application. Figure 1 FIG. 4 is a sectional view along the sectional line E-E.

[0022] Figure 4 FIG. 5 is a structure schematic diagram of a second state of the heat dissipation device according to the embodiment of the present application, in which the sliding member is in a second position.

[0023] Figure 5 FIG. 6 is a structure schematic diagram of a second split structure of the heat dissipation device according to the embodiment of the present application.

[0024] Figure 6 FIG. 7 is a structure schematic diagram of a linkage member in the heat dissipation device according to the embodiment of the present application.

[0025] Figure 7 FIG. 8 is a partial enlarged view of FIG. 7. Figure 1

[0026] Figure 8 FIG. 9 is a sectional view along the sectional line F-F.

[0027] Figure 9 FIG. 10 is a structure schematic diagram of a display device according to an embodiment of the present application. Figure 1

[0028] Figure 10

[0029] MAIN ELEMENT SYMBOL EXPLANATION

[0030] HEAT DISSIPATION DEVICE 100 ​​​

[0031] Display device 200

[0032] Housing mechanism 10

[0033] Receiving cavity 10a

[0034] Heat dissipation hole 10b

[0035] Opening 10c

[0036] Avoidance opening 10d

[0037] Bayonet 10e

[0038] First bar hole 101

[0039] First housing 11

[0040] Bottom wall 111

[0041] Rear wall 112

[0042] Second housing 12

[0043] Front wall 121

[0044] Connecting wall 122

[0045] Slide groove 1221

[0046] Cover 13

[0047] Top wall 131

[0048] Clamping wall 132

[0049] Sliding mechanism 20

[0050] Slider 21

[0051] Second bar hole 211

[0052] First area 212

[0053] Rack 22

[0054] Linkage mechanism 30

[0055] Rotating shaft 31

[0056] First shaft portion 311

[0057] Second shaft portion 312

[0058] Bolt 313

[0059] Screw rod 3131

[0060] Nut 3132

[0061] Gear 32

[0062] tooth groove 321

[0063] linkage 33

[0064] sleeve part 331

[0065] first clamping part 332

[0066] second clamping part 333

[0067] control part 334

[0068] lever 34

[0069] first sleeve part 341

[0070] first limiting groove 3411

[0071] second sleeve part 342

[0072] fixing part 35

[0073] third sleeve part 351

[0074] fourth sleeve part 352

[0075] gasket 36

[0076] lens mechanism 90

[0077] wearing mechanism 91

[0078] axial direction A

[0079] first position B

[0080] second position C

[0081] first direction X

[0082] The following detailed description will further describe the present application with reference to the above drawings. DETAILED DESCRIPTION

[0083] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0084] It should be noted that when an assembly is referred to as "mounted on" another assembly, it can be directly on the other assembly or there can be a middle assembly. When an assembly is referred to as "disposed on" another assembly, it can be directly disposed on the other assembly or there can be a middle assembly.

[0085] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. As used herein, the terms "vertical", "horizontal", "left", "right", "top", "bottom", and similar terms are used for descriptive purposes only and not to limit the application.

[0086] It can be understood that when describing two components arranged in parallel / vertical, the included angle between the two components allows a tolerance of ±10% relative to the standard parallel / vertical.

[0087] The embodiment of the present application provides a heat dissipation device, which comprises a shell mechanism, a sliding mechanism and a linkage mechanism. The shell mechanism is provided with a containing cavity and a heat dissipation hole communicating with the containing cavity. The sliding mechanism comprises a sliding piece and a rack, the sliding piece is located in the containing cavity and is slidably connected to one side of the shell mechanism provided with the heat dissipation hole, and the rack is fixedly connected to the sliding piece. The linkage mechanism comprises a rotating shaft and a gear, the rotating shaft is arranged on the same side of the sliding piece as the rack, the rotating shaft is fixedly connected to the shell mechanism, the gear is rotatably sleeved on the rotating shaft and is engaged with the rack, and the gear is used for driving the sliding piece to slide relative to the heat dissipation hole through the rack so as to adjust the area of the sliding piece shielding the heat dissipation hole.

[0088] In the heat dissipation device, the area of the sliding piece shielding the heat dissipation hole is adjusted by sliding the sliding piece relative to the heat dissipation hole, and the precision of the sliding piece sliding relative to the heat dissipation hole is improved through the linkage of the gear and the rack, so that the area of the sliding piece shielding the heat dissipation hole can be accurately adjusted, the area of the heat dissipation hole communicating with the outside can be dynamically adjusted according to the temperature in the containing cavity, and the heat dissipation performance is improved.

[0089] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0090] Please refer to Figure 1 The heat dissipation device 100 provided by the embodiment of the present application comprises a shell mechanism 10, a sliding mechanism 20 and a linkage mechanism 30. The shell mechanism 10 is provided with a containing cavity 10a and a heat dissipation hole 10b communicating with the containing cavity 10a, and the containing cavity 10a can but is not limited to containing electronic components. The heat dissipation hole 10b is used for realizing the convection of the air in the containing cavity 10a and the air outside the containing cavity 10a, so as to dissipate heat for the containing cavity 10a.

[0091] Please refer to Figure 2The sliding mechanism 20 comprises a sliding piece 21 and a rack 22. The sliding piece 21 is located in the accommodating cavity 10a and is slidably connected to the side of the casing mechanism 10 provided with the heat dissipation holes 10b. The sliding piece 21 slides relative to the heat dissipation holes 10b to adjust the area of the heat dissipation holes 10b blocked by the sliding piece 21, thereby adjusting the area of the heat dissipation holes 10b communicated with the outside. The rack 22 is fixedly connected to the sliding piece 21 and moves synchronously with the sliding piece 21.

[0092] Please refer to Figure 3 The linkage mechanism 30 comprises a rotating shaft 31 and a gear 32. The rotating shaft 31 is arranged on the same side of the sliding piece 21 as the rack 22. The rotating shaft 31 is fixedly connected to the casing mechanism 10. The gear 32 is rotatably sleeved on the rotating shaft 31 and is engaged with the rack 22. The gear 32 is used to drive the sliding piece 21 to slide relative to the heat dissipation holes 10b through the rack 22 to adjust the area of the heat dissipation holes 10b blocked by the sliding piece 21. The linkage of the gear 32 and the rack 22 improves the sliding precision of the sliding piece 21 relative to the heat dissipation holes 10b, facilitating accurate adjustment of the area of the heat dissipation holes 10b blocked by the sliding piece 21.

[0093] It can be understood that, in use, the area of the heat dissipation holes 10b blocked by the sliding piece 21 is inversely related to the temperature in the accommodating cavity 10a. Specifically, the higher the temperature in the accommodating cavity 10a, the smaller the area of the heat dissipation holes 10b blocked by the sliding piece 21, so as to increase the area of the heat dissipation holes 10b communicated with the outside, thereby improving the heat dissipation efficiency. The lower the temperature in the accommodating cavity 10a, the larger the area of the heat dissipation holes 10b blocked by the sliding piece 21, so as to reduce the risk of dust and other impurities entering the accommodating cavity 10a.

[0094] In the above heat dissipation device 100, the area of the heat dissipation holes 10b blocked by the sliding piece 21 is adjusted by sliding the sliding piece 21 relative to the heat dissipation holes 10b. The sliding precision of the sliding piece 21 relative to the heat dissipation holes 10b is improved by the linkage of the gear 32 and the rack 22, facilitating accurate adjustment of the area of the heat dissipation holes 10b blocked by the sliding piece 21. The area of the heat dissipation holes 10b communicated with the outside can be dynamically adjusted according to the temperature in the accommodating cavity 10a, thereby improving the heat dissipation performance.

[0095] Please refer to Figure 4 and Figure 5In some embodiments, the shell mechanism 10 comprises a first shell 11, a second shell 12 and a cover 13. The first shell 11 and the second shell 12 are connected to each other and define a receiving cavity 10a and an opening 10c on one side of the receiving cavity 10a. The cover 13 covers the opening 10c, and a heat dissipation hole 10b is formed on the cover 13 and communicates with the receiving cavity 10a through the opening 10c. A sliding member 21 is slidably connected to one side of the cover 13 facing the receiving cavity 10a, so that the sliding member 21 slides relative to the heat dissipation hole 10b. Specifically, the sliding member 21 is slidably connected in the opening 10c, so as to improve the integration of the sliding member 21 and the shell mechanism 10 and improve the space utilization.

[0096] In some embodiments, the first shell 11 comprises a bottom wall 111 and a rear wall 112 bent relative to the bottom wall 111. The second shell 12 comprises a front wall 121 and two connecting walls 122 spaced apart and connected to one side of the front wall 121. The side of the bottom wall 111 away from the rear wall 112 is connected to the side of the front wall 121 away from the connecting walls 122, and the side of the connecting wall 122 away from the front wall 121 is connected to the rear wall 112. The receiving cavity 10a is formed between the bottom wall 111, the front wall 121 and the rear wall 112, and the opening 10c is formed between the front wall 121, the rear wall 112 and the two connecting walls 122.

[0097] The two connecting walls 122 are respectively provided with a sliding groove 1221 on the side facing each other, and the two ends of the sliding member 21 are slidably connected in the sliding grooves 1221, so as to improve the stability of the sliding of the sliding member 21.

[0098] The side of the rear wall 112 away from the bottom wall 111 is provided with a avoiding opening 10d, and a rotating shaft 31 is arranged in the avoiding opening 10d. The rack 22 extends out of the receiving cavity 10a through the avoiding opening 10d, so as to improve the integration of the rotating shaft 31 and the rack 22 with the shell mechanism 10 and improve the space utilization.

[0099] Please refer again to Figure 2 In some embodiments, the connecting walls 122 and the bottom wall 111 are spaced apart and define a clamping opening 10e formed between the front wall 121, the rear wall 112, the connecting walls 122 and the bottom wall 111. The cover 13 comprises a top wall 131 and clamping walls 132 bent relative to the top wall 131 and connected to both sides of the top wall 131. The sliding member 21 is slidably connected to one side of the top wall 131 facing the receiving cavity 10a and located between the two clamping walls 132. The clamping walls 132 are clamped in the clamping opening 10e, so as to facilitate quick disassembly of the cover 13 during maintenance.

[0100] In some embodiments, the first shell 11 and the second shell 12 are fixed by a clamping groove and / or a bolt, so as to improve the connection strength of the first shell 11 and the second shell 12.

[0101] It can be understood that, in some embodiments, the first shell 11 and the second shell 12 are integrally formed.

[0102] Please refer to Figure 2 and Figure 3 In some embodiments, the heat dissipation hole 10b comprises a plurality of first strip holes 101 arranged at intervals along the first direction X, the sliding member 21 is provided with a plurality of second strip holes 211 arranged at intervals along the first direction X, and the surface of the sliding member 21 facing the heat dissipation hole 10b is provided with a first area 212 separated from the second strip holes 211. The first direction X is perpendicular to the axial direction A of the rotating shaft 31. The sliding member 21 slides relative to the heat dissipation hole 10b, so that the second strip holes 211 are communicated with the first strip holes 101 one by one or the first area 212 blocks the first strip holes 101.

[0103] It can be understood that the first area 212 is formed between two adjacent second strip holes 211 or outside the two outermost second strip holes 211 in the first direction X.

[0104] In some embodiments, the number of the first strip holes 101 and the second strip holes 211 is 3. Alternatively, the number of the first strip holes 101 and the second strip holes 211 can also be 2, 4, 5, 6, 7, 8, 9, 10, and other numbers greater than 10.

[0105] The extension direction of the first strip hole 101 is adapted to the part of the shell mechanism 10 provided with the heat dissipation hole 10b, that is, adapted to the top wall 131. In some embodiments, the two edges of the top wall 131 in the first direction X extend in an arc shape along the length, and correspondingly, the first strip hole 101 extends in an arc shape along the length, and the second strip hole 211 is shaped to correspond to the first strip hole 101, so as to facilitate the one-to-one communication between the second strip hole 211 and the first strip hole 101.

[0106] It can be understood that, in some embodiments, the first strip hole 101 can also extend along the length in a direction perpendicular to the first direction X.

[0107] In some embodiments, the rack 22 extends outward from the sliding member 21 along the first direction X, and the gear 32 drives the rack 22 to move along the first direction X to drive the sliding member 21 to slide along the first direction X, thereby facilitating the adjustment of the positional relationship between the first strip hole 101 and the second strip hole 211.

[0108] Please refer to Figure 1 and Figure 6In some embodiments, the sliding member 21 is reciprocally movable along the first direction X between a first position B and a second position C relative to the housing mechanism 10. When the sliding member 21 is at the first position B, the first strip-shaped hole 101 is completely overlapped with the first area 212, so that the entire area of the heat dissipation hole 10b is closed, and the accommodating cavity 10a is closed. When the sliding member is at the second position C, the first strip-shaped hole 101 is completely overlapped with the second strip-shaped hole 211, so that the entire area of the heat dissipation hole 10b is communicated with the outside, and the heat dissipation performance is improved. When the sliding member 21 moves from the first position B to the second position C, the area of the heat dissipation hole 10b blocked by the sliding member 21 is reduced. When the sliding member 21 moves from the second position C to the first position B, the area of the heat dissipation hole 10b blocked by the sliding member 21 is increased. Thus, the area of the heat dissipation hole 10b communicated with the outside can be dynamically adjusted according to the temperature in the accommodating cavity 10a.

[0109] It can be understood that, in some embodiments, the sliding member 21 is not provided with the second strip-shaped hole 211, i.e., the surface of the sliding member 21 facing the heat dissipation hole 10b is a complete surface. The sliding member 21 slides relative to the heat dissipation hole 10b to block or move away from the first strip-shaped hole 101, so as to achieve the effect of adjusting the area of the heat dissipation hole 10b communicated with the outside.

[0110] It can be understood that, in some embodiments, the number of the heat dissipation holes 10b is one. The sliding member 21 is provided with the second strip-shaped hole 211 corresponding to the heat dissipation hole 10b and the first area 212. The sliding member 21 slides relative to the heat dissipation hole 10b to make the second strip-shaped hole 211 communicated with the heat dissipation hole 10b or make the first area 212 block the heat dissipation hole 10b. Or the sliding member 21 is not provided with the second strip-shaped hole 211. The sliding member 21 slides relative to the heat dissipation hole 10b to block or move away from the heat dissipation hole 10b.

[0111] Please refer to Figure 7 and Figure 8 In some embodiments, the linkage mechanism 30 further comprises a linkage member 33 and a pushing member 34. The linkage member 33 is rotatably sleeved on the rotating shaft 31. The pushing member 34 is provided with a first sleeving portion 341 at one end and penetrates through the avoiding opening 10d and is located outside the housing mechanism 10. The first sleeving portion 341 is rotatably sleeved on the rotating shaft.

[0112] Please refer to Figure 9The linkage 33 comprises a sleeve portion 331, and a first clamping portion 332 and a second clamping portion 333 connected to two sides of the sleeve portion 331. The sleeve portion 331 is slidably arranged between the gear 32 and the first sleeve portion 341 along the axial direction A of the rotating shaft 31. The first clamping portion 332 extends from the sleeve portion 331 towards the gear 32, and is used to selectively extend into the tooth groove 321 of the gear 32 or disengage from the tooth groove 321 of the gear 32. The second clamping portion 333 extends from the sleeve portion 331 towards the first sleeve portion 341, and is slidably limitedly connected to the first sleeve portion 341.

[0113] The knob 34 is used to control the rotation of the first sleeve portion 341, which drives the sleeve portion 331 to rotate through the second clamping portion 333. When the first clamping portion 332 extends into the tooth groove 321 of the gear 32, the sleeve portion 331 is linked with the gear 32 through the first clamping portion 332 to drive the gear 32 to rotate synchronously when the first sleeve portion 341 rotates, thereby driving the slider 21 to slide synchronously through the rack 22. When the first clamping portion 332 disengages from the tooth groove 321 of the gear 32, the sleeve portion 331 is disengaged from the linkage with the gear 32, and the gear 32 cannot be driven to rotate synchronously when the first sleeve portion 341 rotates. The linkage between the knob 34 and the gear 32 can be controlled through the linkage 33, which reduces the risk of the slider 21 sliding due to the accidental touch of the knob 34, and further improves the adjustment accuracy.

[0114] In some embodiments, the first sleeve portion 341 is provided with a first limiting groove 3411 extending along the axial direction A of the rotating shaft 31, and the opening of the first limiting groove 3411 faces the sleeve portion 331. The second clamping portion 333 is slidably limitedly connected to the first limiting groove 3411 along the axial direction A of the rotating shaft 31, so as to facilitate the sliding of the sleeve portion 331 between the gear 32 and the first sleeve portion 341.

[0115] In some embodiments, the linkage 33 further comprises a control portion 334 connected to the sleeve portion 331 away from the outer circumferential surface of the rotating shaft 31 at one end, and extending to the outside of the housing mechanism 10 along the radial direction of the rotating shaft 31 at the other end, which is used to drive the sleeve portion 331 to slide between the gear 32 and the first sleeve portion 341. Specifically, the control portion 334 passes through the avoiding opening 10d and is located outside the housing mechanism 10. It can be understood that the control portion 334 can also abut against the top wall 131 to limit the angle of rotation of the sleeve portion 331.

[0116] In some embodiments, the rotating shaft 31 comprises a first shaft portion 311 and a second shaft portion 312 coaxially arranged and spaced apart. The toggle 34 further comprises a second sleeve portion 342 spaced apart from the first sleeve portion 341. The gear 32, the linkage 33 and the first sleeve portion 341 are sleeved on the first shaft portion 311, and the second sleeve portion 342 is sleeved on the second shaft portion 312. By arranging the first shaft portion 311 and the second shaft portion 312 to be spaced apart, the convenience of assembly is improved.

[0117] In some embodiments, the rotating shaft 31 further comprises a bolt 313 connected to the first shaft portion 311. The bolt 313 comprises a screw rod 3131 and a nut 3132 connected in sequence. The screw rod 3131 is coaxially arranged with the first shaft portion 311, and is partially fixedly connected to the end of the first shaft portion 311. The nut 3132 is spaced apart from the first shaft portion 311. The gear 32 is rotatably sleeved on the screw rod 3131 and located between the nut 3132 and the first shaft portion 311, so as to limit the sliding of the gear 32 in the axial direction A of the rotating shaft 31, thereby improving the stability of the operation of the gear 32. In addition, the outer diameter of the screw rod 3131 is smaller than the outer diameter of the rotating shaft 31, which is conducive to reducing the volume of the gear 32 and improving the space utilization.

[0118] Optionally, the screw rod 3131 is fixedly connected to the end of the first shaft portion 311 by threads, so as to realize quick disassembly and maintenance.

[0119] Please refer to Figure 7 and Figure 9 In some embodiments, the linkage mechanism 30 further comprises a fixing member 35. One end of the fixing member 35 is fixedly connected to the shell mechanism 10, and the other end of the fixing member 35 is provided with two third sleeve portions 351 and 352 spaced apart. Specifically, the fixing member 35 is fixedly connected to the rear wall 112, and the third sleeve portion 351 and the fourth sleeve portion 352 are located in the avoiding opening 10d. The third sleeve portion 351 is sleeved on the first shaft portion 311 and located on the side of the first sleeve portion 341 away from the linkage 33. The fourth sleeve portion 352 is sleeved on the second shaft portion 312 and arranged adjacent to the second sleeve portion 342. The first shaft portion 311 and the second shaft portion 312 are respectively supported by the third sleeve portion 351 and the fourth sleeve portion 352, so as to improve the connection strength between the rotating shaft 31 and the shell mechanism 10.

[0120] In some embodiments, the linkage mechanism 30 further comprises two spacers 36. One of the spacers 36 is arranged between the gear 32 and the nut 3132, so as to improve the stability of the rotation of the gear 32. The other spacer 36 is arranged at the end of the second shaft portion 312, so as to improve the stability of the rotation of the second sleeve portion 342.

[0121] It can be understood that, in some embodiments, the rotating shaft 31 is a one-piece structure, and the gear 32, the linkage 33, the pusher 34 and the fixing member 35 are sleeved on the rotating shaft 31.

[0122] It can be understood that, in some embodiments, the heat dissipation device 100 further comprises a sensing mechanism (not shown in the figure), which is connected to the accommodation cavity 10a and is used to sense the temperature in the accommodation cavity 10a. When the temperature reaches a preset value, the user is prompted to adjust the sliding member 21 through the linkage mechanism 30 by light or sound.

[0123] It can be understood that, in some embodiments, the gear 32 can be directly driven by a motor or a cylinder, and the motor or the cylinder is electrically connected to the sensing mechanism to realize the function of automatic adjustment.

[0124] Please refer to Figure 10 The embodiments of the present application also provide a display device 200, which comprises an electronic element (not shown), a lens mechanism 90 and any one of the heat dissipation devices 100 described above. The electronic element is accommodated in the accommodation cavity 10a, and the lens mechanism 90 is connected to the shell mechanism 10 and is electrically connected to the electronic element, and is used to display an image, which can be but is not limited to an AR image or a VR image.

[0125] In some embodiments, the lens mechanism 90 is connected to the bottom wall 111.

[0126] In some embodiments, the display device 200 further comprises a wearing mechanism 91, which is connected to the shell mechanism 10 and is used to wear the display device 200 on the human body. The wearing mechanism can be but is not limited to a glasses holder, a band or a helmet, etc.

[0127] In the above heat dissipation device 100 and display device 200, the area of the sliding member 21 shielding the heat dissipation hole 10b is adjusted by sliding the sliding member 21 relative to the heat dissipation hole 10b, and the precision of the sliding member 21 sliding relative to the heat dissipation hole 10b is improved by the linkage of the gear 32 and the rack 22, so as to facilitate the accurate adjustment of the area of the sliding member 21 shielding the heat dissipation hole 10b, and the area of the heat dissipation hole 10b communicating with the outside can be dynamically adjusted according to the temperature in the accommodation cavity 10a, thereby improving the heat dissipation performance.

[0128] Those skilled in the art should understand that the above embodiments are only used to illustrate the present application, and are not used as a limitation to the present application. Any appropriate changes and variations made to the above embodiments within the spirit and principles of the present application fall within the scope of the present application.

Claims

1. A heat dissipation device, characterized in that: include: The housing mechanism includes a receiving cavity and heat dissipation holes communicating with the receiving cavity; The sliding mechanism includes a slider and a rack. The slider is located in the receiving cavity and is slidably connected to the side of the housing mechanism where the heat dissipation hole is provided. The rack is fixedly connected to the slider. The linkage mechanism includes a rotating shaft and a gear. The rotating shaft and the rack are located on the same side of the sliding member. The rotating shaft is fixedly connected to the housing mechanism. The gear is rotatably sleeved on the rotating shaft and meshes with the rack. The gear is used to drive the sliding member to slide relative to the heat dissipation hole through the rack, so as to adjust the area of ​​the sliding member covering the heat dissipation hole. The linkage mechanism also includes a linkage member and a toggle member. The linkage member is rotatably sleeved on the rotating shaft. One end of the toggle member has a first sleeve portion, and the other end is located outside the housing mechanism. The linkage is rotatably sleeved on the rotating shaft. The linkage includes a bushing portion and a first retaining portion and a second retaining portion connected to both sides of the bushing portion. Along the axial direction of the rotating shaft, the bushing portion is slidably disposed between the gear and the first sleeve portion. The first retaining portion extends from the bushing portion toward the gear and is used to selectively extend into or disengage from the gear tooth groove. The second retaining portion extends from the bushing portion toward the first sleeve portion and is slidably limited and connected to the first sleeve portion.

2. The heat dissipation device as described in claim 1, characterized in that: The first sleeve portion is provided with a first limiting groove, which extends along the axial direction of the rotating shaft. The opening of the first limiting groove faces the bushing portion, and the second retaining portion is slidably limited and connected in the first limiting groove.

3. The heat dissipation device as described in claim 1, characterized in that: The linkage also includes a control unit, one end of which is connected to the outer peripheral surface of the bushing portion away from the rotating shaft, and the other end extends radially along the rotating shaft to the outside of the housing mechanism, for driving the bushing portion to slide between the gear and the first sleeve portion.

4. The heat dissipation device as described in claim 1, characterized in that: The rotating shaft includes a first shaft portion and a second shaft portion coaxially arranged, with the first shaft portion and the second shaft portion spaced apart. One end of the actuating member is also provided with a second sleeve portion spaced apart from the first sleeve portion. The gear, the linkage member, and the first sleeve portion are sleeved on the first shaft portion, and the second sleeve portion is sleeved on the second shaft portion.

5. The heat dissipation device as described in claim 4, characterized in that: The rotating shaft also includes a bolt connected to the first shaft portion. The bolt includes a screw and a nut connected in sequence. The screw and the first shaft portion are coaxially arranged. The screw portion is fixedly connected to the end of the first shaft portion. The nut and the first shaft portion are spaced apart. The gear is rotatably sleeved on the screw and located between the nut and the first shaft portion.

6. The heat dissipation device as described in claim 4, characterized in that: The linkage mechanism also includes a fixing member. One end of the fixing member is fixedly connected to the housing mechanism, and the other end is provided with two spaced third and fourth sleeve portions. The third sleeve portion is sleeved on the first shaft portion and located on the side of the first sleeve portion away from the linkage member. The fourth sleeve portion is sleeved on the second shaft portion and is arranged adjacent to the second sleeve portion.

7. The heat dissipation device as described in claim 1, characterized in that: The heat dissipation hole includes a plurality of first strip holes spaced apart along a first direction. The sliding member is provided with a plurality of second strip holes spaced apart along the first direction. The surface of the sliding member facing the heat dissipation hole is provided with a first region that is separate from the second strip holes. The first direction is perpendicular to the axis of the rotating shaft. The sliding member slides relative to the heat dissipation hole, so that the second strip holes and the first strip holes are connected in a one-to-one correspondence or the first region blocks the first strip holes.

8. The heat dissipation device as described in claim 7, characterized in that: The slider can reciprocate between a first position and a second position relative to the housing mechanism along the first direction. When the slider is in the first position, the first strip hole completely overlaps with the first area. When the slider is in the second position, the first strip hole completely overlaps with the second strip hole. The slider moves from the first position toward the second position to reduce the area of ​​the slider blocking the heat dissipation hole. The slider moves from the second position toward the first position to increase the area of ​​the slider blocking the heat dissipation hole.

9. The heat dissipation device as described in claim 1, characterized in that: The housing mechanism includes a first housing, a second housing, and a cover. The first housing and the second housing are interconnected and define the receiving cavity and an opening located on one side of the receiving cavity. The cover seals the opening. The heat dissipation hole is formed on the cover. The sliding member is slidably connected to the side of the cover facing the receiving cavity.

10. The heat dissipation device as described in claim 9, characterized in that: The first housing includes a rear wall whose bottom wall is bent relative to the bottom wall. The second housing includes a front wall and two connecting walls that are connected to one side of the front wall and spaced apart. The side of the bottom wall away from the rear wall is connected to the side of the front wall away from the connecting walls. The side of the connecting walls away from the front wall is connected to the rear wall. An opening is formed between the front wall, the rear wall, and the two connecting walls. The two connecting walls are respectively provided with sliding grooves on their opposing sides. The two ends of the sliding member are slidably connected to the sliding grooves. The side of the rear wall away from the bottom wall is provided with a clearance opening. The rotating shaft is disposed in the clearance opening. The rack extends from the receiving cavity through the clearance opening.

11. The heat dissipation device as described in claim 10, characterized in that: The connecting wall and the bottom wall are spaced apart and define a latch. The latch is formed between the front wall, the rear wall, the connecting wall and the bottom wall. The cover includes a top wall and latching walls that are connected to both sides of the top wall and bent relative to the top wall. The sliding member is slidably connected to the side of the top wall facing the receiving cavity and is located between the two latching walls. The latching walls are held in the latch.

12. A display device, characterized in that: The device includes electronic components, a lens mechanism, and a heat dissipation device as described in any one of claims 1 to 11, wherein the electronic components are housed in the receiving cavity, the lens mechanism is connected to the housing mechanism and electrically connected to the electronic components, and the device is used to display images.

Images