Multimedia equipment based on projection technology

Abstract

The invention relates to the technical field of VR projection equipment, and provides multimedia equipment based on a projection technology, and the multimedia equipment comprises a VR projection mechanism, the VR projection mechanism comprises a VR glasses main body, the inner side of a glasses frame of the VR glasses main body is fixedly connected with an air guide ring pipe, the top of the VR glasses main body is fixedly connected with a mounting box, and the middle part of the inner side of the mounting box is provided with an air supply assembly. Massage assemblies are arranged at the two ends of the VR glasses main body, each massage assembly comprises a fixed seat, one end of the fixed seat is rotationally connected with a rotating sleeve, the top of the rotating sleeve is fixedly connected with a rotating arm, the rotating sleeve is sleeved with a torsional spring, one end of the rotating arm is rotationally connected with a rotating shaft, and the other end of the rotating arm is rotationally connected with a rotating roller; a plurality of massage balls are fixedly connected to the outer side of the rotating roller, linkage assemblies are arranged at the two ends of the mounting box, and a transmission part is arranged on the inner side of the rotating arm. According to the VR glasses, the skin around the eyes of the user is blown, the ventilation effect in the glasses frame of the VR glasses main body is improved, and the problem that the skin around the eyes of the user sweats is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of VR projection equipment, and in particular to a multimedia device based on projection technology. Background Art

[0002] VR projection multimedia devices are advanced multimedia devices that combine virtual reality (VR) technology and projection technology. They provide users with an immersive audio-visual experience. By simulating and interacting with the real environment, they use computer graphics, sensors, display devices and other technologies to create a sensory virtual environment. Users can see the images in the virtual environment through devices such as head-mounted displays, and use handles or other input devices to interact. Among them, VR glasses, as a type of projection device, mainly use VR projection imaging technology. This technology uses a device called a "projector" to project images of a three-dimensional environment in front of the user's eyes. The projector consists of a flat (LCD or LED) screen and a camera. The camera will capture the movement changes of the user's head in real time, and the projection screen will change synchronously according to the head movement captured by the camera, thereby ensuring that the image projected in front of the user's eyes is always correct and visible.

[0003] After searching, the Chinese invention patent publication number CN118151392B discloses "a head-mounted VR glasses, including a VR glasses body, a telescopic belt and a headband, the two ends of the telescopic belt are fixed on the two sides of the VR glasses body, an arc-shaped protective piece is fixed in the middle of the telescopic belt, one end of the headband is mounted on the outer wall of the arc-shaped protective piece, and the other end is mounted on the buckle on the top surface of the VR glasses body, a pad is fixed on the arc-shaped protective piece, and an interpupillary distance adjustment component is arranged inside the VR glasses body; the interpupillary distance adjustment component includes a protection box, and a power device and a telescopic transmission component are also arranged in the protection box, the power device is connected to the telescopic transmission component, the power device includes a dual-axis motor and a motor seat, the dual-axis motor is installed on the bottom wall of the protection box through the motor seat, the telescopic transmission component includes a left sleeve, a right sleeve, a sliding groove and a sliding block, the left sleeve passes through the left frame and is movably connected to the bearing in the left frame, the right sleeve passes through the right frame and is movably connected to the bearing in the right frame, and the inner walls of the left sleeve and the right sleeve are provided with sliding grooves along the length direction".

[0004] However, in the process of implementing relevant technologies, this type of patent has some technical defects:

[0005] First, although the patent allows the user to adjust the focal length when wearing VR glasses, the frame of the VR glasses is tightly fitted to the user's eyes, which makes the internal ventilation of the frame of the VR glasses poor. After wearing for a long time, the skin around the user's eyes is prone to sweating, thus affecting the wearing comfort.

[0006] Second, after wearing VR glasses, users need to concentrate on the screen for a long time, which will cause eye fatigue, dryness and discomfort. Therefore, it is necessary to take a rest after using it for a period of time. In order to reduce fatigue, the user's temples can be massaged, but this patent cannot achieve the massage of the temples. In view of this, the present invention proposes a multimedia device based on projection technology. Summary of the invention

[0007] The present invention provides a multimedia device based on projection technology, which solves the problem of poor ventilation of VR glasses in the prior art.

[0008] The technical solution of the present invention is as follows: a multimedia device based on projection technology, including a VR projection mechanism, the VR projection mechanism including a VR glasses body, an air guide ring tube is fixedly connected to the inner side of the frame of the VR glasses body, the air guide ring tube is provided with a plurality of evenly distributed air holes, a mounting box is fixedly connected to the top of the VR glasses body, an air supply component for supplying air to the inside of the air guide ring tube is provided in the middle of the inner side of the mounting box, massage components are provided at both ends of the VR glasses body, the massage component includes a fixing seat fixedly connected to the outer wall of the VR glasses body, One end of the fixed seat is rotatably connected to a rotating sleeve, the top of the rotating sleeve is fixedly connected to a rotating arm, a torsion spring is sleeved on the rotating sleeve, one end of the torsion spring is welded to the fixed seat, the other end of the torsion spring is welded to the rotating arm, one end of the rotating arm is rotatably connected to a rotating shaft, the other end of the rotating arm is rotatably connected to a rotating roller, a plurality of massage balls are fixedly connected to the outer side of the rotating roller, both ends of the installation box are provided with linkage components that drive the rotating shaft to rotate by cooperating with the start of the air supply component, and the inner side of the rotating arm is provided with a transmission member that drives the roller to rotate by cooperating with the rotation of the rotating shaft.

[0009] Preferably, the transmission member includes a first pulley, which is fixedly connected to the rotating shaft, the middle part of the rotating arm is rotatably connected to two second pulleys, one end on the inner side of the rotating arm is rotatably connected to a third pulley coaxially fixedly connected to the rotating roller, and the first pulley, the two second pulleys and the third pulley are connected by belt transmission.

[0010] Preferably, the rotating arm is an L-shaped structure, and the two second pulleys are located at right angles to the rotating arm.

[0011] Preferably, the air supply assembly includes a motor, which is fixedly mounted on the inner side of the mounting box, the output shaft of the motor is fixedly connected to a suction impeller, the outer side of the mounting box is provided with an air inlet slot corresponding to the position of the suction impeller, the bottom of the mounting box is fixedly connected to an air supply pipe, and the bottom of the air supply pipe is connected to the inside of the air guide ring pipe.

[0012] Preferably, the linkage assembly includes a first bevel gear, the first bevel gear is fixedly connected to the top end of the corresponding rotating shaft, one end of the mounting box is rotatably connected to an elastic shaft, one end of the elastic shaft is fixedly connected to a second bevel gear meshing with the first bevel gear, the other end of the elastic shaft is fixedly connected to a first docking block, the inner side of the mounting box is rotatably connected to a telescopic shaft, one end of the telescopic shaft is fixedly connected to a third bevel gear, the output shaft of the motor is fixedly connected to a fourth bevel gear, the third bevel gear is meshed with the fourth bevel gear, the other end of the telescopic shaft is fixedly connected to the second docking block, and one end of the top of the mounting box is provided with an operating member for driving the output end of the telescopic shaft to move so that the second docking block cooperates with the first docking block.

[0013] Preferably, the elastic shaft includes a first sleeve shaft, which is rotatably connected to the inner side of the installation box, the other end of the first sleeve shaft is slidably connected to the first plug shaft, the outer side of the first plug shaft is fixedly connected to the first limit bar, the inner wall of the first sleeve shaft is provided with a first limit groove matching the first limit bar, the first limit bar is slidably connected to the inner wall of the first limit groove, a spring is sleeved on the inner side of the first plug shaft, one end of the spring is in contact with the inner wall of the first sleeve shaft, and the other end of the spring is in contact with the first plug shaft.

[0014] Preferably, the telescopic shaft includes a second plug shaft, which is rotatably connected to the inner side of the installation box, one end of the second plug shaft is slidably connected to a second sleeve shaft, the outer side of the second plug shaft is fixedly connected to a second limit bar, the inner wall of the second sleeve shaft is provided with a second limit groove matching the second limit bar, and the second limit bar is slidably connected to the inner wall of the second limit groove.

[0015] Preferably, the operating member includes a movable seat penetrating through the top wall of the mounting box, the movable seat is slidably connected to the mounting box, the bottom end of the movable seat is rotatably connected to the telescopic shaft, the top of the movable seat is fixedly connected with a slider, one end of the slider is fixedly connected with a block, one end of the top of the mounting box is fixedly connected with a seat slidably matched with the block, the top of the seat is slidably connected with a positioning rod penetrating the top wall of the seat, the bottom end of the positioning rod is in contact with the block, and the top of the positioning rod is fixedly connected with a pull block.

[0016] Preferably, a slide groove is provided on the top wall of the installation box in the horizontal direction, and the movable seat is slidably connected to the inner wall of the slide groove.

[0017] Preferably, it also includes a wearing mechanism, which includes a headband, one end of the headband is rotatably connected to a rotating seat, the inner side of the rotating seat is slidably connected to a connecting plate that penetrates the rotating seat, the bottom end of the connecting plate is fixedly connected to the VR glasses body, the outer side of the rotating seat is threadedly connected to a connecting bolt, and the connecting plate is provided with a plurality of equidistantly distributed screw holes along the length direction, and the connecting bolt can be threadedly matched with any one of the screw holes.

[0018] The working principle and beneficial effects of the present invention are:

[0019] 1. When in use, the user wears the VR glasses on the eyes, starts the air supply component to supply air to the inside of the air guide ring tube, so that the air holes on the air guide ring tube blow air to the skin around the user's eyes, thereby improving the ventilation effect inside the frame of the VR glasses and avoiding the problem of reduced comfort caused by sweating on the skin around the user's eyes;

[0020] 2. After the user wears the VR glasses, the roller is located at the user's temple. Under the action of the torsion spring, the rotating arm applies pressure to the roller, so that the massage ball on the roller fits tightly against the user's temple. The linkage component and the air supply component are started to rotate the shaft, so that the transmission member drives the roller to rotate, which makes the massage ball on the roller rotate circumferentially, so that the massage ball applies intermittent pressure to the user's temple, thereby massaging the user's temple, which can effectively reduce the user's eye fatigue. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] Figure 1 It is a structural schematic diagram of a multimedia device based on projection technology of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the VR projection mechanism of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the massage component of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the air supply assembly of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the linkage assembly of the present invention;

[0027] Figure 6 It is a structural schematic diagram of the elastic shaft of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the telescopic shaft of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the operating member of the present invention;

[0030] Fig. 9 It is a structural schematic diagram of the wearing mechanism of the present invention.

[0031] In the figure: 1. VR projection mechanism; 11. VR glasses body; 12. air guide ring tube; 13. air hole; 14. installation box; 15. air supply assembly; 151. air inlet slot; 152. motor; 153. air suction impeller; 154. air supply pipe; 16. massage assembly; 161. fixed seat; 162. rotating sleeve; 163. rotating arm; 164. torsion spring; 165. rotating roller; 166. massage ball; 167. rotating shaft; 168. first pulley; 169. second pulley; 160. third pulley; 17. linkage assembly; 171. first bevel gear; 172. elastic shaft; 1721. first sleeve shaft; 1722. first plug shaft; 1723. first limit strip ; 1724, spring; 1725, first limiting groove; 173, second bevel gear; 174, first docking block; 175, telescopic shaft; 1751, second sleeve shaft; 1752, second plug shaft; 1753, second limiting strip; 1754, second limiting groove; 176, second docking block; 177, operating member; 1771, movable seat; 1772, slide groove; 1773, slider; 1774, block; 1775, seat; 1776, positioning rod; 1777, pull block; 178, third bevel gear; 179, fourth bevel gear; 2, wearing mechanism; 21, headband; 22, rotating seat; 23, connecting plate; 24, connecting bolt; 25, screw hole. DETAILED DESCRIPTION

[0032] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] like Figures 1 to 9As shown, this embodiment proposes a multimedia device based on projection technology, including a VR projection mechanism 1, the VR projection mechanism 1 includes a VR glasses body 11, an air guide ring tube 12 is fixedly connected to the inner side of the frame of the VR glasses body 11, and a plurality of evenly distributed air holes 13 are opened on the air guide ring tube 12, a mounting box 14 is fixedly connected to the top of the VR glasses body 11, and an air supply component 15 for supplying air to the inside of the air guide ring tube 12 is arranged in the middle of the inner side of the mounting box 14, and massage components 16 are arranged at both ends of the VR glasses body 11, and the massage component 16 includes a fixing seat 161 fixedly connected to the outer wall of the VR glasses body 11, and one end of the fixing seat 161 is rotatably connected to A rotating sleeve 162, the top of which is fixedly connected to a rotating arm 163, a torsion spring 164 is sleeved on the rotating sleeve 162, one end of the torsion spring 164 is welded to the fixed seat 161, the other end of the torsion spring 164 is welded to the rotating arm 163, one end of the rotating arm 163 is rotatably connected to a rotating shaft 167, the other end of the rotating arm 163 is rotatably connected to a rotating roller 165, a plurality of massage balls 166 are fixedly connected to the outer side of the rotating roller 165, both ends of the mounting box 14 are provided with a linkage assembly 17 which drives the rotating shaft 167 to rotate by cooperating with the start of the air supply assembly 15, and a transmission member is provided on the inner side of the rotating arm 163 which drives the rotating roller 165 to rotate by cooperating with the rotation of the rotating shaft 167.

[0034] When in use, the user wears the VR glasses body 11 on the eyes, and starts the air supply component 15 to supply air to the inside of the air guide ring tube 12, so that the air holes 13 on the air guide ring tube 12 blow air to the skin around the user's eyes, thereby improving the ventilation effect in the frame of the VR glasses body 11 and avoiding the problem of reduced comfort caused by sweating on the skin around the user's eyes;

[0035] After the user wears the VR glasses body 11, the roller 165 is located at the user's temple. Under the action of the torsion spring 164, the rotating arm 163 applies pressure to the roller 165, so that the massage ball 166 on the roller 165 fits tightly against the user's temple. By cooperating with the linkage component 17 and the start of the air supply component 15, the rotating shaft 167 rotates, so that the transmission member drives the roller 165 to rotate, which makes the massage ball 166 on the roller 165 rotate circumferentially, so that the massage ball 166 applies intermittent pressing pressure to the user's temple, thereby massaging the user's temple, which can effectively reduce the user's eye fatigue.

[0036] Furthermore, a wearing mechanism 2 is provided on the top of the VR glasses body 11, and the wearing mechanism 2 includes a headband 21, one end of the headband 21 is rotatably connected to a rotating seat 22, the inner side of the rotating seat 22 is slidably connected to a connecting plate 23 that penetrates the rotating seat 22, the bottom end of the connecting plate 23 is fixedly connected to the VR glasses body 11, the outer side of the rotating seat 22 is threadedly connected to a connecting bolt 24, a plurality of equidistantly distributed screw holes 25 are provided on the connecting plate 23 along the length direction, and the connecting bolt 24 can be threadedly matched with any of the screw holes 25; the user wears the VR glasses body 11 by wearing the headband 21, and adjusts the position of the VR glasses body 11 by loosening the connecting bolt 24, so that the VR glasses body 11 can be worn just to the user's eye position, and then tightens the connecting bolt 24 to keep the VR glasses body 11 stable.

[0037] Furthermore, the transmission member includes a first pulley 168, which is fixedly connected to the rotating shaft 167. The middle part of the rotating arm 163 is rotatably connected to the two second pulleys 169. One end of the inner side of the rotating arm 163 is rotatably connected to the third pulley 160 coaxially fixedly connected to the roller 165. The first pulley 168, the two second pulleys 169 and the third pulley 160 are connected by belt transmission. The rotating arm 163 is an L-shaped structure, and the two second pulleys 169 are located at right angles to the rotating arm 163; the first pulley 168 can be rotated by rotating the rotating shaft 167. Under the transmission action of the belt, the two second pulleys 169 and the third pulley 160 both rotate, which makes the roller 165 rotate synchronously, so that the massage ball 166 on the roller 165 rotates circumferentially, so that the massage ball 166 intermittently applies pressing pressure to the user's temple, thereby massaging the user's temple.

[0038] Furthermore, the air supply assembly 15 includes a motor 152, which is fixedly installed on the inner side of the installation box 14, and the output shaft of the motor 152 is fixedly connected to an air suction impeller 153. An air inlet slot 151 corresponding to the position of the air suction impeller 153 is opened on the outer side of the installation box 14, and an air supply pipe 154 is fixedly connected to the bottom of the installation box 14, and the bottom of the air supply pipe 154 is connected to the inside of the air guide ring pipe 12; by starting the motor 152, the air suction impeller 153 rotates, so that the pressure inside the installation box 14 is reduced, so that the external air is introduced into the installation box 14 through the air inlet slot 151, and then introduced into the air guide ring pipe 12 through the air supply pipe 154, so that the air holes 13 on the air guide ring pipe 12 blow air to the skin around the user's eyes, thereby improving the ventilation effect in the frame of the VR glasses body 11.

[0039] Further, the linkage assembly 17 includes a first bevel gear 171, which is fixedly connected to the top of the corresponding rotating shaft 167, one end of the installation box 14 is rotatably connected to an elastic shaft 172, one end of the elastic shaft 172 is fixedly connected to a second bevel gear 173 meshing with the first bevel gear 171, and the other end of the elastic shaft 172 is fixedly connected to a first docking block 174, the inner side of the installation box 14 is rotatably connected to a telescopic shaft 175, one end of the telescopic shaft 175 is fixedly connected to a third bevel gear 178, the output shaft of the motor 152 is fixedly connected to a fourth bevel gear 179, the third bevel gear 178 is meshed with the fourth bevel gear 179, the other end of the telescopic shaft 175 is fixedly connected to a second docking block 176, and one end of the top of the installation box 14 is provided with an operating member 177 for driving the output end of the telescopic shaft 175 to move so that the second docking block 176 cooperates with the first docking block 174.

[0040] By starting the motor 152, the fourth bevel gear 179 rotates, so that the third bevel gear 178 drives the telescopic shaft 175 to rotate synchronously, and the second docking block 176 rotates synchronously. The second docking block 176 cooperates with the first docking block 174 through the operating member 177, which makes the first docking block 174 drive the elastic shaft 172 to rotate synchronously, and also makes the second bevel gear 173 rotate, so that the first bevel gear 171 drives the rotating shaft 167 to rotate synchronously, so that the first pulley 168 rotates, and under the transmission action of the belt, the two second pulleys 169 and the third pulley 160 rotate, which makes the roller 165 rotate synchronously, so that the massage ball 166 on the roller 165 rotates circumferentially, so that the massage ball 166 intermittently applies pressing pressure to the user's temple to achieve massage work.

[0041] Furthermore, the elastic shaft 172 includes a first sleeve shaft 1721, which is rotatably connected to the inner side of the installation box 14, and the other end of the first sleeve shaft 1721 is slidably connected to the first plug shaft 1722, and the outer side of the first plug shaft 1722 is fixedly connected to the first limit bar 1723, and the inner wall of the first sleeve shaft 1721 is provided with a first limit groove 1725 matching the first limit bar 1723, and the first limit bar 1723 is slidably connected to the inner wall of the first limit groove 1725, and the inner side of the first plug shaft 1722 is sleeved with a spring 1724, one end of the spring 1724 is in contact with the inner wall of the first sleeve shaft 1721, and the other end of the spring 1724 is in contact with the first plug shaft 1722.

[0042] The first limit bar 1723 can limit the relative rotation between the first sleeve shaft 1721 and the first plug shaft 1722, so that the first plug shaft 1722 always keeps synchronous rotation with the first sleeve shaft 1721 during the activity. The spring 1724 can always apply elastic force to the first plug shaft 1722, so that the second docking block 176 can cooperate smoothly with the first docking block 174 when they contact.

[0043] Furthermore, the telescopic shaft 175 includes a second plug shaft 1752, which is rotatably connected to the inner side of the mounting box 14, one end of the second plug shaft 1752 is slidably connected to the second sleeve shaft 1751, the outer side of the second plug shaft 1752 is fixedly connected to the second limit bar 1753, the inner wall of the second sleeve shaft 1751 is provided with a second limit groove 1754 matching the second limit bar 1753, and the second limit bar 1753 is slidably connected to the inner wall of the second limit groove 1754; the second limit bar 1753 can limit the relative rotation between the second sleeve shaft 1751 and the second plug shaft 1752, so that the second sleeve shaft 1751 always keeps synchronous rotation with the second plug shaft 1752 during the activity, thereby ensuring the stable transmission of power.

[0044] Furthermore, the operating member 177 includes a movable seat 1771 that passes through the top wall of the installation box 14, the movable seat 1771 is slidably connected to the installation box 14, the bottom end of the movable seat 1771 is rotatably connected to the telescopic shaft 175, the top of the movable seat 1771 is fixedly connected with a slider 1773, one end of the slider 1773 is fixedly connected with a clamping block 1774, one end of the top of the installation box 14 is fixedly connected with a clamping seat 1775 that slidably cooperates with the clamping block 1774, the top of the clamping seat 1775 is slidably connected with a positioning rod 1776 that passes through the top wall of the clamping seat 1775, the bottom end of the positioning rod 1776 is in conflict with the clamping block 1774, the top of the positioning rod 1776 is fixedly connected with a pull block 1777, the top wall of the installation box 14 is provided with a slide groove 1772 in the horizontal direction, and the movable seat 1771 is slidably connected to the inner wall of the slide groove 1772.

[0045] Working principle: First, when using, the user wears the VR glasses body 11 on the eyes, and then starts the motor 152 to rotate the air suction impeller 153, so that the pressure inside the installation box 14 is reduced, so that the external air is introduced into the installation box 14 through the air inlet slot 151, and then introduced into the air guide ring tube 12 through the air supply pipe 154, so that the air holes 13 on the air guide ring tube 12 blow air to the skin around the user's eyes, thereby improving the ventilation effect in the frame of the VR glasses body 11, and avoiding the problem of reduced comfort caused by sweating of the skin around the user's eyes;

[0046] When the user needs a massage, the slider 1773 is moved to make the block 1774 cooperate with the seat 1775, and the positioning rod 1776 is used to limit the block 1774, so that the block 1774 and the seat 1775 remain fixed, which makes the second docking block 176 cooperate with the first docking block 174. When the motor 152 is started, the fourth bevel gear 179 is driven to rotate, so that the third bevel gear 178 drives the telescopic shaft 175 to rotate synchronously, so that the second docking block 176 rotates synchronously, and the second docking block 176 is matched with the first docking block 174 through the operating member 177, which makes the first docking block 174 bring The dynamic elastic shaft 172 rotates synchronously, which makes the second bevel gear 173 rotate, so that the first bevel gear 171 drives the rotating shaft 167 to rotate synchronously, so that the first pulley 168 rotates. Under the transmission action of the belt, the two second pulleys 169 and the third pulley 160 rotate, which makes the roller 165 rotate synchronously, so that the massage ball 166 on the roller 165 rotates circumferentially, so that the massage ball 166 intermittently applies pressing pressure to the user's temple to achieve massage work, thereby effectively reducing the user's eye fatigue. In this process, the user can massage the temple on either side or massage at the same time as needed, and the operability is high.

[0047] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multimedia device based on projection technology, comprising a VR projection mechanism (1), characterized in that: The VR projection mechanism (1) comprises a VR glasses body (11), the inner side of the frame of the VR glasses body (11) is fixedly connected to an air guide ring tube (12), the air guide ring tube (12) is provided with a plurality of evenly distributed air holes (13), the top of the VR glasses body (11) is fixedly connected to a mounting box (14), the middle part of the inner side of the mounting box (14) is provided with an air supply component (15) for supplying air to the inside of the air guide ring tube (12), both ends of the VR glasses body (11) are provided with a massage component (16), the massage component (16) comprises a fixed seat (161) fixedly connected to the outer wall of the VR glasses body (11), one end of the fixed seat (161) is rotatably connected to a rotating sleeve (162), the top of the rotating sleeve (162) is fixedly connected to A rotating arm (163) is connected, a torsion spring (164) is sleeved on the rotating sleeve (162), one end of the torsion spring (164) is welded to the fixed seat (161), the other end of the torsion spring (164) is welded to the rotating arm (163), one end of the rotating arm (163) is rotatably connected to a rotating shaft (167), the other end of the rotating arm (163) is rotatably connected to a rotating roller (165), the outer side of the rotating roller (165) is fixedly connected to a plurality of massage balls (166), both ends of the installation box (14) are provided with a linkage assembly (17) which drives the rotating shaft (167) to rotate by cooperating with the start of the air supply assembly (15), and the inner side of the rotating arm (163) is provided with a transmission member which drives the rotating roller (165) to rotate by cooperating with the rotation of the rotating shaft (167).

2. A multimedia device based on projection technology according to claim 1, characterized in that: The transmission member comprises a first pulley (168), wherein the first pulley (168) is fixedly connected to a rotating shaft (167); the middle part of the rotating arm (163) is rotatably connected to two second pulleys (169); one end of the inner side of the rotating arm (163) is rotatably connected to a third pulley (160) coaxially fixedly connected to a rotating roller (165); the first pulley (168), the two second pulleys (169) and the third pulley (160) are connected via a belt transmission.

3. A multimedia device based on projection technology according to claim 2, characterized in that: The rotating arm (163) is an L-shaped structure, and the two second pulleys (169) are located at right angles to the rotating arm (163).

4. The multimedia device based on projection technology according to claim 1, characterized in that: The air supply assembly (15) comprises a motor (152), the motor (152) being fixedly mounted on the inner side of the installation box (14), the output shaft of the motor (152) being fixedly connected to an air suction impeller (153), the outer side of the installation box (14) being provided with an air inlet slot (151) corresponding to the position of the air suction impeller (153), the bottom of the installation box (14) being fixedly connected to an air supply pipe (154), the bottom of the air supply pipe (154) being connected to the inside of the air guide ring pipe (12).

5. A multimedia device based on projection technology according to claim 4, characterized in that: The linkage assembly (17) comprises a first bevel gear (171), the first bevel gear (171) is fixedly connected to the top end of the corresponding rotating shaft (167), one end of the installation box (14) is rotatably connected to an elastic shaft (172), one end of the elastic shaft (172) is fixedly connected to a second bevel gear (173) meshing with the first bevel gear (171), the other end of the elastic shaft (172) is fixedly connected to a first docking block (174), the inner side of the installation box (14) is rotatably connected to a telescopic shaft (175), the telescopic shaft (175) is rotatably connected to the inner side of the installation box (14), and the telescopic shaft (175) is rotatably connected to the inner side of the installation box (14). One end of the retractable shaft (175) is fixedly connected to a third bevel gear (178), the output shaft of the motor (152) is fixedly connected to a fourth bevel gear (179), the third bevel gear (178) meshes with the fourth bevel gear (179), the other end of the retractable shaft (175) is fixedly connected to a second docking block (176), and one end of the top of the installation box (14) is provided with an operating member (177) for driving the output end of the retractable shaft (175) to move so that the second docking block (176) cooperates with the first docking block (174).

6. The multimedia device based on projection technology according to claim 5, characterized in that: The elastic shaft (172) comprises a first sleeve shaft (1721), the first sleeve shaft (1721) is rotatably connected to the inner side of the installation box (14), the other end of the first sleeve shaft (1721) is slidably connected to the first plug shaft (1722), the outer side of the first plug shaft (1722) is fixedly connected to the first limit strip (1723), the inner wall of the first sleeve shaft (1721) is provided with a first limit groove (1725) matching the first limit strip (1723), the first limit strip (1723) is slidably connected to the inner wall of the first limit groove (1725), the inner side of the first plug shaft (1722) is sleeved with a spring (1724), one end of the spring (1724) is in contact with the inner wall of the first sleeve shaft (1721), and the other end of the spring (1724) is in contact with the first plug shaft (1722).

7. The multimedia device based on projection technology according to claim 5, characterized in that: The telescopic shaft (175) includes a second plug shaft (1752), the second plug shaft (1752) is rotatably connected to the inner side of the installation box (14), one end of the second plug shaft (1752) is slidably connected to the second sleeve shaft (1751), the outer side of the second plug shaft (1752) is fixedly connected to the second limit strip (1753), the inner wall of the second sleeve shaft (1751) is provided with a second limit groove (1754) matching the second limit strip (1753), and the second limit strip (1753) is slidably connected to the inner wall of the second limit groove (1754).

8. The multimedia device based on projection technology according to claim 5, characterized in that: The operating member (177) comprises a movable seat (1771) penetrating the top wall of the installation box (14); the movable seat (1771) is slidably connected to the installation box (14); the bottom end of the movable seat (1771) is rotatably connected to the telescopic shaft (175); the top end of the movable seat (1771) is fixedly connected to a slider (1773); one end of the slider (1773) is fixedly connected to a clamping block (1774); one end of the top of the installation box (14) is fixedly connected to a clamping seat (1775) slidably matched with the clamping block (1774); the top of the clamping seat (1775) is slidably connected to a positioning rod (1776) penetrating the top wall of the clamping seat (1775); the bottom end of the positioning rod (1776) abuts against the clamping block (1774); the top end of the positioning rod (1776) is fixedly connected to a pull block (1777).

9. The multimedia device based on projection technology according to claim 8, characterized in that: The top wall of the installation box (14) is provided with a slide groove (1772) in the horizontal direction, and the movable seat (1771) is slidably connected to the inner wall of the slide groove (1772).

10. The multimedia device based on projection technology according to claim 1, characterized in that: The invention also comprises a wearing mechanism (2), wherein the wearing mechanism (2) comprises a headband (21), one end of the headband (21) is rotatably connected to a rotating seat (22), the inner side of the rotating seat (22) is slidably connected to a connecting plate (23) penetrating the rotating seat (22), the bottom end of the connecting plate (23) is fixedly connected to the VR glasses body (11), the outer side of the rotating seat (22) is threadedly connected to a connecting bolt (24), a plurality of equidistantly distributed screw holes (25) are provided on the connecting plate (23) along the length direction, and the connecting bolt (24) can be threadedly matched with any one of the screw holes (25).

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