Projector capable of serving as home television

Abstract

The invention relates to the technical field of projectors, in particular to a projector capable of serving as a home television, which comprises a machine body and a projection port, an upper moving plate is mounted at the upper end of the machine body, heat dissipation ports are formed in the two sides of the machine body, an expansion type ventilation assembly is arranged outside the heat dissipation ports, and the expansion type ventilation assembly comprises a main push plate, a moving plate, a main shielding plate, a lateral shielding plate and a flow guide plate. The main shielding plate is driven by the second pushing assembly to move up and down and rotate forwards and backwards at the same time, and the second pushing assembly provides power through the main pushing plate. The auxiliary shielding plate is driven by a third pushing assembly to deflect up and down; the flow guide plate is driven by the driven assembly to turn over up and down; the lateral shielding plate is driven by the linkage assembly to do forward and backward 90-degree rotation motion. When the projector is used, an S-shaped heat dissipation channel is formed, the probability that dust enters the projector body is reduced, and the overall use performance and user experience of the projector are improved.

Description

Technical Field

[0001] The invention relates to the technical field of projectors, in particular to a projector that can serve as a home television. Background Art

[0002] A projector is a device that projects or reflects images or videos onto a screen through digital light processing technology or LCD imaging technology. It can access corresponding image and video signals through different signal sources, such as computers, mobile phones, DVDs, and DVs to achieve playback. Projectors are widely used in education, business, engineering, and home use.

[0003] Existing home projectors are generally integrated with operating systems, which can directly start video streaming services, games, education or entertainment software, and act as a kind of smart TV. Existing home projectors are more intelligent and have integrated electronic devices such as chip circuit boards, which generate more heat. They dissipate heat by opening ventilation holes on their side walls. However, this heat dissipation method will also produce some disadvantages in actual use; for example: the larger the aperture of the ventilation hole, the more dust will drill into the instrument; and the smaller the aperture of the ventilation hole, the greater the heat dissipation effect. Therefore, how to ensure a good ventilation state while preventing dust from taking the opportunity to drill into the body is a technical problem that the present invention needs to solve. Summary of the invention

[0004] The object of the present invention is to provide a projector that can serve as a home television to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A projector that can serve as a home TV, comprising a body and a projection port arranged on the front side of the body, an active screw is installed in the middle of the upper end of the body for limited rotation, an upper movable plate is sleeved on the outer side of the active screw, a sealing cover is arranged on the side of the upper movable plate close to the projection port, the sealing cover is driven by a first pushing assembly to perform an up-and-down flipping motion, and the first pushing assembly is powered by the upper movable plate;

[0006] The horizontal sides of the machine body are provided with heat dissipation ports, and an expandable ventilation assembly is arranged outside the heat dissipation port, and the expandable ventilation assembly includes a main push plate, a movable plate, a main shield plate, a side shield plate and a guide plate, one end of the main push plate is fixedly connected to the upper movable plate, and the other end of the main push plate is fixedly connected to two groups of T-shaped push rods, and the outer sleeves of the two groups of T-shaped push rods are provided with a movable plate, and the main shield plate is rotatably mounted on the movable plate, and the main shield plate is driven by the second push assembly to move up and down and rotate forward and reverse at the same time, and the second push assembly provides power through the main push plate;

[0007] A notch is set at the lower end of the main baffle, and an auxiliary baffle is rotatably installed at the notch. The auxiliary baffle is driven by the third pushing component to perform up and down deflection movement; a guide plate is set at the lower end of the main baffle, and the guide plate is driven by the driven component to perform up and down flipping movement; a group of side baffles are set on both horizontal sides of each group of main baffles, and the side baffles are driven by the linkage component to perform 90° forward and reverse rotation movement.

[0008] Preferably, an internal threaded hole matching the active screw is opened in the middle of the upper movable plate, and the four corners of the lower end of the upper movable plate are fixedly connected to vertical guide rods, and the vertical guide rods are limitedly slidably installed on the machine body. The first pushing assembly includes a No. 1 rack and a No. 1 driven wheel, one end of the No. 1 rack is fixedly connected to the upper movable plate, and the other end of the No. 1 rack extends into the machine body and meshes with the No. 1 driven wheel, and a central shaft is fixedly inserted inside the No. 1 driven wheel, and a sealing cover is fixedly sleeved on the outside of the central shaft.

[0009] Preferably, a receiving groove for accommodating the second pushing assembly is opened inside the movable plate, and the second pushing assembly includes an upper push plate, a stop bar, a vertical spring, a No. 2 rack, a No. 2 driven wheel and a main rotating shaft. One end of the upper push plate is fixedly connected to the main push plate, and the other end of the upper push plate extends into the receiving groove and is fixedly connected to the stop bar, and 3-6 vertical springs are arranged below the stop bar.

[0010] Preferably, one end of the No. 2 rack is fixedly connected to the stop bar, and the other end of the No. 2 rack is meshed and connected to the No. 2 driven wheel, and the No. 2 driven wheel is fixedly sleeved on the main rotating shaft, and the main rotating shaft is limited and rotated and installed in the movable plate, and the two ends of the driving shaft extend out of the movable plate to the outside, and the upper end of the main shield is fixedly sleeved on the outside of the driving shaft.

[0011] Preferably, a placement groove for accommodating the third pushing assembly is opened inside the main baffle, and the third pushing assembly includes an auxiliary rotating shaft, a cylindrical cam, a cylindrical pin, a movable push block, a No. 1 spring, a toggle pin and a contact protrusion. The auxiliary baffle is fixedly sleeved on the auxiliary rotating shaft, and the end of the auxiliary rotating shaft extends into the main baffle and is fixedly connected to the cylindrical cam. The cylindrical cam is limitedly slidably installed in the main baffle, one end of the cylindrical pin is inserted into the wheel groove of the cylindrical cam, and the other end of the cylindrical pin is fixedly connected to the movable push block.

[0012] Preferably, the movable push block is fixedly connected to a spring No. 1 on one side close to the auxiliary baffle, a cavity is provided inside the movable push block, oblique grooves are provided on both sides of the cavity, a push pin is inserted in the oblique groove, one end of the contact protrusion is fixedly connected to the push pin, and the other end of the contact protrusion extends out of the main baffle and is connected in contact with the side wall of the machine body.

[0013] Preferably, the linkage assembly includes a lateral rotating shaft, a No. 3 driven wheel, a No. 3 rack, a No. 2 spring and a lateral push strip, the lateral shield is fixedly sleeved on the lateral rotating shaft, the lateral rotating shaft is limited and rotatably installed on the side wall of the machine body, and the upper end of the lateral rotating shaft is coaxially fixedly connected with the No. 3 driven wheel, one end of the No. 3 rack is meshed and connected to the No. 3 driven wheel, and the other end of the No. 3 rack is fixedly connected to the lateral push strip.

[0014] Preferably, one end of the lateral push strip is fixedly connected to a No. 2 spring, the other end of the lateral push strip extends out of the body and contacts the main push plate, and the end of the lateral push strip close to the main push plate is arranged in an arc shape, and a preset groove matching the lateral push strip is provided on the side wall of the movable plate.

[0015] Preferably, a movable mounting groove for accommodating a driven component is provided on the side wall of the body, and the driven component includes a No. 3 rotating shaft, a spur gear, a rack seat, a No. 3 spring, a vertical moving bar, a matching rack, a conversion wheel, a driving rack and a clamping bar. The No. 3 rotating shaft is limited and rotatably mounted on the body, the guide plate is fixedly sleeved on the No. 3 rotating shaft, and an avoidance groove for accommodating the spur gear is provided in the middle part of the guide plate, the spur gear is fixedly sleeved on the No. 3 rotating shaft, the rack seat is limited and slidably mounted in the movable mounting groove and meshingly connected with the spur gear, and a No. 3 spring is fixedly provided on the upper end surface of the rack seat.

[0016] Preferably, one end of the vertical moving bar is fixedly connected to the rack seat, and the other end of the vertical moving bar is fixedly provided with a matching rack, which is meshed and connected to the conversion wheel. One end of the driving rack is meshed and connected to the conversion wheel, and the other end of the driving rack is fixedly connected to the clamping strip, and the upper end of the clamping strip is abutted and connected with a driven pressure block, which is fixedly connected to the moving plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention sets a first pushing component to drive the sealing cover to perform an up and down flipping movement, so that the sealing cover opens or blocks the projection port to maintain a good projection effect; and through the design of the main pushing plate, the movable plate, the main shielding plate, the side shielding plate and the guide plate, on the one hand, when the instrument is not in use, the components can be quickly folded and stored and the heat dissipation port can be blocked and sealed to prevent dust from entering; on the other hand, when the instrument is in use, an S-shaped heat dissipation channel is formed, which not only allows the heat generated in the body to be discharged through the heat dissipation port in time, but also greatly reduces the probability of dust drilling into the body when the heat dissipation port is open, thereby effectively improving the overall performance and user experience of the projector.

[0019] 2. Through the design of the push plate, stop bar, vertical spring, No. 2 rack, No. 2 driven wheel and main shaft, the up and down movement of the main push plate can be converted into the up and down flipping movement of the main baffle, and then converted into the synchronous linear up and down movement of the moving plate and the main baffle, so that the main baffle can not only be opened or closed normally, but also drive the auxiliary baffle to be exactly at the same level as the bottom of the machine body.

[0020] 3. The present invention adopts the design of an auxiliary rotating shaft, a cylindrical cam, a cylindrical pin, a movable push block, a No. 1 spring, a toggle pin and a contact protrusion, so that the auxiliary baffle can adaptively flip up and down with the opening and closing state of the main baffle. When the main baffle flips downward, it can be in the same plane with the lower end surface of the body, thereby increasing the bearing area of ​​the bottom of the body and improving the overall stability of the device to a certain extent.

[0021] 4. Through the design of the lateral rotating shaft, the third driven wheel, the third rack, the second spring and the lateral push strip, the linear motion of the main push plate can be converted into the positive and negative rotational motion of the lateral shield plate, and the horizontal sides of the main shield plate are shielded, so that the heat can only flow out through the S-shaped heat dissipation channel with the heat dissipation port as the entrance and the groove on the main shield plate as the gap.

[0022] 5. The present invention has a novel structure, a reasonable design, and a strong mechanical linkage. Through a set of driving components, the synchronous flipping movement of the main baffle, the auxiliary baffle, the side baffle and the guide plate can be synchronously realized. Not only can an S-shaped heat dissipation channel be quickly formed when the machine is running to facilitate heat removal, but also when the machine stops operating, it can be quickly folded and stored to improve the portability of the machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the unfolded state of the unfolded ventilation assembly of the present invention.

[0024] Figure 2 It is a schematic diagram of the closed state of the deployable ventilation assembly of the present invention.

[0025] Figure 3 It is a schematic cross-sectional view of the structure of the present invention.

[0026] Figure 4 It is a three-dimensional schematic diagram of the deployable ventilation assembly in the present invention.

[0027] Figure 5 This is a schematic diagram of another viewing angle of the deployable ventilation assembly of the present invention.

[0028] Figure 6 It is a schematic diagram of the lateral shield and the second pushing assembly in the present invention.

[0029] Figure 7 It is a schematic diagram of the connection between the main push plate and the second push assembly in the present invention.

[0030] Figure 8 It is a schematic diagram of the connection between the guide plate and the driven component in the present invention.

[0031] Fig. 9 It is a schematic diagram of the main shield and the third pushing assembly in the present invention.

[0032] Fig.10 It is a schematic diagram of an explosion of the third pushing assembly in the present invention.

[0033] In the figure: body 1, heat dissipation port 101, projection port 2, sealing cover 3, upper movable plate 4, active screw 5, vertical guide rod 6, rack No. 1 7, driven wheel No. 1 8, main push plate 9, T-shaped push rod 901, movable plate 10, preset groove 1001, driven pressure block 1002, upper push plate 11, stop bar 12, vertical spring 13, rack No. 2 14, driven wheel No. 2 15, main shaft 16, main baffle 17, auxiliary baffle 18, auxiliary shaft 19, column Body cam 20, cylindrical pin 21, movable push block 22, inclined groove 23, No. 1 spring 24, toggle pin 25, contact protrusion 26, lateral shield 27, lateral rotating shaft 28, No. 3 driven wheel 29, No. 3 rack 30, No. 2 spring 31, lateral push bar 32, guide plate 33, No. 3 rotating shaft 34, spur gear 35, rack seat 36, No. 3 spring 37, vertical moving bar 38, matching rack 39, conversion wheel 40, driving rack 41, and clamping bar 42. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in 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.

[0035] See also Figures 1 to 10 The present invention provides a technical solution: a projector that can serve as a home TV, comprising a body 1 and a projection port 2 arranged on the front side of the body 1, an active screw 5 is installed in the middle of the upper end of the body 1 for limited rotation, an upper moving plate 4 is sleeved on the outer side of the active screw 5, a sealing cover 3 is arranged on the side of the upper moving plate 4 close to the projection port 2, the sealing cover 3 is driven by a first pushing component to perform an up-and-down flipping motion, and the first pushing component is powered by the upper moving plate 4;

[0036] Both horizontal sides of the machine body 1 are provided with heat dissipation ports 101, and an expandable ventilation assembly is arranged outside the heat dissipation ports 101. The expandable ventilation assembly includes a main push plate 9, a movable plate 10, a main baffle 17, a lateral baffle 27 and a guide plate 33. One end of the main push plate 9 is fixedly connected to the movable plate 4, and the other end of the main push plate 9 is fixedly connected to two groups of T-shaped push rods 901. The outer sleeves of the two groups of T-shaped push rods 901 are provided with a movable plate 10, and the main baffle 17 is rotatably installed on the movable plate 10. The main baffle 17 is driven by the second push assembly to move up and down and also rotate forward and reverse, and the second push assembly provides power through the main push plate 9;

[0037] A notch is provided at the lower end of the main baffle 17, and an auxiliary baffle 18 is rotatably installed at the notch. The auxiliary baffle 18 is driven by the third pushing component to perform up and down deflection movement; a guide plate 33 is provided at the lower end of the main baffle 17, and the guide plate 33 is driven by the driven component to perform up and down flipping movement; a group of lateral baffles 27 are provided on both horizontal sides of each group of main baffles 17, and the lateral baffles 27 are driven by the linkage component to perform 90° forward and reverse rotation movement.

[0038] Furthermore, the present invention drives the sealing cover 3 to perform an up and down flipping movement by setting a first pushing component, so that the sealing cover 3 opens or blocks the projection port 2 to maintain a good projection effect; and through the design of the main pushing plate 9, the movable plate 10, the main shielding plate 17, the side shielding plate 27 and the guide plate 33, on the one hand, when the instrument is not in use, the components can be quickly folded and stored to block and seal the heat dissipation port 101 to prevent dust from entering; on the other hand, when the instrument is in use, an S-shaped heat dissipation channel is formed, which not only allows the heat generated in the body 1 to be discharged through the heat dissipation port 101 in time, but also greatly reduces the probability of dust drilling into the body 1 when the heat dissipation port 101 is open, thereby effectively improving the overall performance and user experience of the projector.

[0039] An internal threaded hole matching the active screw 5 is provided in the middle of the upper movable plate 4. The four corners of the lower end of the upper movable plate 4 are fixedly connected with vertical guide rods 6. The vertical guide rods 6 are limitedly slidably installed on the body 1. The first pushing assembly includes a No. 1 rack 7 and a No. 1 driven wheel 8. One end of the No. 1 rack 7 is fixedly connected to the upper movable plate 4, and the other end of the No. 1 rack 7 extends into the body 1 and meshes with the No. 1 driven wheel 8. A central shaft is fixedly inserted inside the No. 1 driven wheel 8, and the sealing cover 3 is fixedly sleeved on the outside of the central shaft.

[0040] Furthermore, by rotating the active screw 5, under the screwing action of the internal and external threads and the guiding limit of the vertical guide rod 6, the upper moving plate 4 is forced to drive the main push plate 9 and the first rack 7 to move downward;

[0041] A receiving groove for accommodating the second pushing assembly is provided inside the movable plate 10. The second pushing assembly includes an upper push plate 11, a stop bar 12, a vertical spring 13, a second rack 14, a second driven wheel 15 and a main rotating shaft 16. One end of the upper push plate 11 is fixedly connected to the main push plate 9, and the other end of the upper push plate 11 extends into the receiving groove and is fixedly connected to the stop bar 12. 3-6 vertical springs 13 are arranged below the stop bar 12.

[0042] One end of the No. 2 rack 14 is fixedly connected to the stop bar 12, and the other end of the No. 2 rack 14 is meshed with the No. 2 driven wheel 15. The No. 2 driven wheel 15 is fixedly sleeved on the main rotating shaft 16. The main rotating shaft 16 is limitedly rotated and installed in the moving plate 10, and both ends of the driving shaft 16 extend out of the moving plate 10. The upper end of the main shielding plate 17 is fixedly sleeved on the outside of the driving shaft 16.

[0043] Furthermore, through the design of the upper push plate 11, the stop bar 12, the vertical spring 13, the second rack 14, the second driven wheel 15 and the main shaft 16, the up-and-down movement of the main push plate 9 can be first converted into the up-and-down flipping movement of the main shutter 17, and then converted into the synchronous linear up-and-down movement of the moving plate 10 and the main shutter 17, so that the main shutter 17 can not only be opened or closed normally, but also drive the auxiliary shutter 18 to be exactly at the same level as the bottom end of the body 1;

[0044] A placement groove for accommodating the third pushing assembly is opened inside the main baffle 17, and the third pushing assembly includes an auxiliary rotating shaft 19, a cylindrical cam 20, a cylindrical pin 21, a movable push block 22, a No. 1 spring 24, a toggle pin 25 and a contact protrusion 26. The auxiliary baffle 18 is fixedly sleeved on the auxiliary rotating shaft 19, and the end of the auxiliary rotating shaft 19 extends into the main baffle 17 and is fixedly connected to the cylindrical cam 20. The cylindrical cam 20 is installed in the main baffle 17 with limited sliding. One end of the cylindrical pin 21 is inserted into the wheel groove of the cylindrical cam 20, and the other end of the cylindrical pin 21 is fixedly connected to the movable push block 22.

[0045] The movable push block 22 is fixedly connected to a spring No. 1 24 on one side close to the auxiliary baffle 18, a cavity is provided inside the movable push block 22, oblique grooves 23 are provided on both sides of the cavity, a toggle pin 25 is inserted into the oblique groove 23, one end of the contact protrusion 26 is fixedly connected to the toggle pin 25, and the other end of the contact protrusion 26 extends out of the main baffle 17 and is connected to the side wall of the body 1.

[0046] Furthermore, through the design of the auxiliary rotating shaft 19, the cylindrical cam 20, the cylindrical pin 21, the movable push block 22, the No. 1 spring 24, the toggle pin 25 and the contact protrusion 26, the auxiliary baffle 18 can adaptively flip up and down with the opening and closing state of the main baffle 17. When the main baffle 17 flips downward, it can be in the same plane with the lower end surface of the body 1, thereby increasing the bearing area of ​​the bottom of the body 1 and improving the overall stability of the device to a certain extent.

[0047] The linkage assembly includes a lateral rotating shaft 28, a No. 3 driven wheel 29, a No. 3 rack 30, a No. 2 spring 31 and a lateral push bar 32. The lateral shield 27 is fixedly sleeved on the lateral rotating shaft 28. The lateral rotating shaft 28 is installed on the side wall of the body 1 for limited rotation, and the upper end of the lateral rotating shaft 28 is coaxially fixedly connected with the No. 3 driven wheel 29. One end of the No. 3 rack 30 is meshed and connected to the No. 3 driven wheel 29, and the other end of the No. 3 rack 30 is fixedly connected to the lateral push bar 32.

[0048] One end of the lateral push strip 32 is fixedly connected to the No. 2 spring 31, and the other end of the lateral push strip 32 extends out of the body 1 and contacts the main push plate 9, and the end of the lateral push strip 3 close to the main push plate 9 is arranged in an arc shape, and a preset groove 1001 matching the lateral push strip 3 is opened on the side wall of the movable plate 10.

[0049] Furthermore, through the design of the lateral rotating shaft 28, the third driven wheel 29, the third rack 30, the second spring 31 and the lateral push strip 32, the linear motion of the main push plate 9 can be converted into the forward and reverse 90° rotational motion of the lateral shield plate 27, thereby shielding the horizontal sides of the main shield plate 17, so that the heat can only flow out through the S-shaped heat dissipation channel with the heat dissipation port 101 as the entrance and the groove on the main shield plate 17 as the gap.

[0050] A movable mounting groove for accommodating a driven component is provided on the side wall of the body 1, and the driven component includes a No. 3 rotating shaft 34, a spur gear 35, a rack seat 36, a No. 3 spring 37, a vertical moving bar 38, a matching rack 39, a conversion wheel 40, a driving rack 41 and a clamping bar 42. The No. 3 rotating shaft 34 is limitedly rotated and installed on the body 1, the guide plate 33 is fixedly sleeved on the No. 3 rotating shaft 34, and a avoidance groove for accommodating the spur gear 35 is provided in the middle part of the guide plate 33, the spur gear 35 is fixedly sleeved on the No. 3 rotating shaft 34, the rack seat 36 is limitedly slidably installed in the movable mounting groove and meshed with the spur gear 35, and the upper end surface of the rack seat 36 is fixedly provided with a No. 3 spring 37.

[0051] One end of the vertical moving bar 38 is fixedly connected to the rack seat 36, and the other end of the vertical moving bar 38 is fixedly provided with a matching rack 39, and the matching rack 39 is meshed and connected to the conversion wheel 40. One end of the driving rack 41 is meshed and connected to the conversion wheel 40, and the other end of the driving rack 41 is fixedly connected to the clamping bar 42. The upper end of the clamping bar 42 is abutted and connected with a driven pressure block 1002, and the driven pressure block 1002 is fixedly connected to the moving plate 10.

[0052] Furthermore, through the design of the third rotating shaft 34, the spur gear 35, the rack seat 36, the third spring 37, the vertical moving bar 38, the matching rack 39, the conversion wheel 40, the driving rack 41 and the clamping bar 42, the up and down movement of the movable plate 10 can be converted into the up and down flipping movement of the guide plate 33, so that the guide plate 33 guides and redirects the airflow.

[0053] When ventilation and heat dissipation are required, the present invention first rotates the active screw 5, and under the screwing action of the internal and external threads and the guiding limit of the vertical guide rod 6, the upper movable plate 4 is forced to drive the main push plate 9 and the No. 1 rack 7 to move downward; and the No. 1 rack 7 acts on the No. 1 driven wheel 8, so that the central axis drives the sealing cover 3 to flip up and down, thereby opening the projection port 2; at the same time, the main push plate 9 first squeezes the upper push plate 11, so that the upper push plate 11 drives the stop bar 12 and the No. 2 rack 14 to move downward first, and the No. 2 rack 14 acts on the No. 2 driven wheel 15, so that the active shaft 16 drives the main shield plate 17 to flip upward As the main push plate 9 continues to move downward, the T-shaped push rod 901 at its lower end presses the movable plate 10 downward, so that the movable plate 10 and the main baffle 17 move downward as a whole; in this process, as the main baffle 17 flips upward, the force acting on the contact protrusion 26 is released, so that the movable push block 22 moves in a direction away from the auxiliary baffle 18 under the rebound force of the No. 1 spring 24, and at this time, the inclined groove 23 on the movable push block 22 acts on the toggle pin 25, and the toggle pin 25 pushes the cylindrical cam 20, so that the auxiliary shaft 19 drives the auxiliary baffle 18 to flip downward and be flush with the lower end surface of the body 1;

[0054] During the movement of the movable plate 10, the driven pressure block 1002 thereon acts on the card bar 42, so that the driving rack 41 moves downward and pushes the conversion wheel 40, and the conversion wheel 40 acts on the matching rack 39, so that the vertical moving bar 38 is forced to drive the rack seat 36 to move upward, and the rack seat 36 acts on the spur gear 35, so that the third rotating shaft 34 drives the guide plate 33 to flip downward; and during the downward movement of the main push plate 9, its side wall is squeezed on the arc end of the lateral push bar 32, so that the lateral push bar 32 is forced to drive the third rack 30 to move inward, and the third rack 30 acts on the third driven wheel 29, so that the lateral rotating shaft 28 drives the lateral shield 27 to rotate 90° inward and tightly abut against the two sides of the main shield 17; hereby, an S-shaped heat dissipation channel is formed, so that the heat generated in the body 1 is discharged through the heat dissipation port 101 in time.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A projector that can serve as a home television, comprising a body (1) and a projection port (2) arranged on the front side of the body (1), characterized in that: An active screw rod (5) is installed in a limited rotational manner at the middle of the upper end of the machine body (1); an upper movable plate (4) is sleeved on the outside of the active screw rod (5); a sealing cover (3) is provided on the side of the upper movable plate (4) close to the projection port (2); the sealing cover (3) is driven by a first pushing component to perform an upside-down flipping movement, and the first pushing component is powered by the upper movable plate (4); Both horizontal sides of the machine body (1) are provided with heat dissipation ports (101), and an expandable ventilation assembly is arranged outside the heat dissipation port (101), and the expandable ventilation assembly comprises a main push plate (9), a movable plate (10), a main baffle (17), a lateral baffle (27) and a guide plate (33), one end of the main push plate (9) is fixedly connected to the movable plate (4), and the other end of the main push plate (9) is fixedly connected to two groups of T-shaped push rods (901), and the two groups of T-shaped push rods (901) are externally sleeved with a movable plate (10), and a main baffle (17) is rotatably mounted on the movable plate (10), and the main baffle (17) is driven by a second push assembly to move up and down and also rotate forward and reverse, and the second push assembly provides power through the main push plate (9); A notch is arranged at the lower end of the main baffle (17), and an auxiliary baffle (18) is rotatably installed at the notch, and the auxiliary baffle (18) is driven by a third pushing component to perform an upward and downward deflection movement; a guide plate (33) is arranged at the lower end of the main baffle (17), and the guide plate (33) is driven by a driven component to perform an upward and downward flipping movement; a group of lateral baffles (27) are arranged on both horizontal sides of each group of main baffles (17), and the lateral baffles (27) are driven by a linkage component to perform a forward and reverse 90° rotation movement.

2. A projector that can serve as a home television according to claim 1, characterized in that: An internal threaded hole matching the active screw rod (5) is provided in the middle of the upper movable plate (4); the four corners of the lower end of the upper movable plate (4) are fixedly connected with vertical guide rods (6); the vertical guide rods (6) are limitedly slidably installed on the machine body (1); the first pushing assembly comprises a No. 1 rack (7) and a No. 1 driven wheel (8); one end of the No. 1 rack (7) is fixedly connected to the upper movable plate (4); the other end of the No. 1 rack (7) extends into the machine body (1) and meshes with the No. 1 driven wheel (8); a central shaft is fixedly inserted inside the No. 1 driven wheel (8); and a sealing cover (3) is fixedly sleeved on the outside of the central shaft.

3. A projector that can serve as a home television according to claim 1, characterized in that: The movable plate (10) is provided with a receiving groove inside for receiving the second pushing assembly, and the second pushing assembly includes an upper push plate (11), a stop bar (12), a vertical spring (13), a second rack (14), a second driven wheel (15) and a main rotating shaft (16), one end of the upper push plate (11) is fixedly connected to the main push plate (9), and the other end of the upper push plate (11) extends into the receiving groove and is fixedly connected to the stop bar (12), and 3-6 vertical springs (13) are arranged below the stop bar (12).

4. A projector that can serve as a home television according to claim 3, characterized in that: One end of the second rack (14) is fixedly connected to the stop bar (12), and the other end of the second rack (14) is meshedly connected to the second driven wheel (15). The second driven wheel (15) is fixedly sleeved on the main rotating shaft (16). The main rotating shaft (16) is installed in the movable plate (10) for limited rotation, and both ends of the driving shaft (16) extend out of the movable plate (10), and the upper end of the main shielding plate (17) is fixedly sleeved on the outside of the driving shaft (16).

5. A projector capable of serving as a home television according to claim 1, characterized in that: The main baffle (17) is provided with a placement groove for accommodating the third pushing component, and the third pushing component includes an auxiliary rotating shaft (19), a cylindrical cam (20), a cylindrical pin (21), a movable push block (22), a No. 1 spring (24), a toggle pin (25) and a contact protrusion (26). The auxiliary baffle (18) is fixedly sleeved on the auxiliary rotating shaft (19), and the end of the auxiliary rotating shaft (19) extends into the main baffle (17) and is fixedly connected to the cylindrical cam (20). The cylindrical cam (20) is limitedly slidably installed in the main baffle (17), one end of the cylindrical pin (21) is inserted into the wheel groove of the cylindrical cam (20), and the other end of the cylindrical pin (21) is fixedly connected to the movable push block (22).

6. A projector capable of serving as a home television according to claim 5, characterized in that: The movable push block (22) is fixedly connected to a spring (24) on one side close to the auxiliary baffle (18), a cavity is provided inside the movable push block (22), oblique grooves (23) are provided on both sides of the cavity, a toggle pin (25) is inserted into the oblique groove (23), one end of the contact protrusion (26) is fixedly connected to the toggle pin (25), and the other end of the contact protrusion (26) extends out of the main baffle (17) and is in contact with the side wall of the machine body (1).

7. A projector capable of serving as a home television according to claim 1, characterized in that: The linkage assembly comprises a lateral rotating shaft (28), a third driven wheel (29), a third rack (30), a second spring (31) and a lateral push bar (32); the lateral shield (27) is fixedly sleeved on the lateral rotating shaft (28); the lateral rotating shaft (28) is mounted on the side wall of the machine body (1) for limited rotation; the upper end of the lateral rotating shaft (28) is coaxially fixedly connected with the third driven wheel (29); one end of the third rack (30) is meshedly connected with the third driven wheel (29); and the other end of the third rack (30) is fixedly connected to the lateral push bar (32).

8. A projector capable of serving as a home television according to claim 7, characterized in that: One end of the lateral push strip (32) is fixedly connected to a No. 2 spring (31), and the other end of the lateral push strip (32) extends out of the machine body (1) and contacts the main push plate (9), and one end of the lateral push strip (3) close to the main push plate (9) is arranged in an arc shape, and a pre-set groove (1001) matching the lateral push strip (3) is opened on the side wall of the movable plate (10).

9. A projector capable of serving as a home television according to claim 1, characterized in that: The side wall of the machine body (1) is provided with a movable installation groove for accommodating a driven component, and the driven component comprises a No. 3 rotating shaft (34), a spur gear (35), a rack seat (36), a No. 3 spring (37), a vertical moving bar (38), a matching rack (39), a conversion wheel (40), a driving rack (41) and a clamping bar (42). The No. 3 rotating shaft (34) is limitedly rotatably installed on the machine body (1), the guide plate (33) is fixedly sleeved on the No. 3 rotating shaft (34), and a avoidance groove for accommodating the spur gear (35) is provided in the middle of the guide plate (33), the spur gear (35) is fixedly sleeved on the No. 3 rotating shaft (34), the rack seat (36) is limitedly slidably installed in the movable installation groove and meshedly connected with the spur gear (35), and the upper end surface of the rack seat (36) is fixedly provided with a No. 3 spring (37).

10. A projector capable of serving as a home television according to claim 9, characterized in that: One end of the vertical moving bar (38) is fixedly connected to the rack seat (36), and the other end of the vertical moving bar (38) is fixedly provided with a matching rack (39), and the matching rack (39) is meshedly connected to the conversion wheel (40), one end of the driving rack (41) is meshedly connected to the conversion wheel (40), and the other end of the driving rack (41) is fixedly connected to the clamping bar (42), and the upper end of the clamping bar (42) is abutted and connected with a driven pressure block (1002), and the driven pressure block (1002) is fixedly connected to the moving plate (10).

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