Vehicle-mounted projection screen

Abstract

The utility model discloses a vehicle-mounted projection screen, which comprises an outer cover, a curtain, two symmetrical folding rods and a transverse plate, a winding drum is rotatably connected in the outer cover, a motor is arranged in the outer cover, an output shaft of the motor is connected with one end of the winding drum, one end of the curtain is wound on the outer side of the winding drum, the other end of the curtain extends out of the outer cover, and the transverse plate is arranged in the outer cover. One end of the folding rod is rotatably connected with the outer cover, an elastic assembly is arranged on the folding rod, the two ends of the elastic assembly are connected with the two ends of the folding rod respectively, the middle of the elastic assembly abuts against the bent position of the folding rod, the other end of the folding rod is rotatably connected with the transverse plate, and the other end of the curtain is fixedly connected with the transverse plate. According to the vehicle-mounted projection screen provided by the utility model, the film watching display area of film and television equipment in a carriage is increased, and the discomfort of eyes of a user during watching can be reduced by adopting the screen displayed by reflected light.

Description

Technical Field

[0001] The utility model relates to the field of projection screens, in particular to a vehicle-mounted projection screen. Background Art

[0002] Currently, most in-car audio and video equipment on the market uses LCD TVs. Since LCD TVs are common electrical appliances on the market, you only need to choose the right size and matching mounting brackets to install the LCD TV in the car. Therefore, the above solution is a common solution used by most car companies when designing in-car audio and video equipment for the car.

[0003] Due to the small cabin area of ​​family cars, car TVs can only use LCD TVs with small display areas. However, small LCD TVs cannot meet customers' needs for large-screen viewing. In addition, due to the small cabin space, users are closer to the LCD TV. LCD TVs with self-luminous displays can easily cause fatigue and discomfort to users' eyes. Utility Model Content

[0004] The purpose of the utility model is to provide a vehicle-mounted projection screen, which increases the viewing and display area of ​​film and television equipment in the vehicle compartment, and adopts a screen with reflected light display to reduce the user's eye discomfort when watching.

[0005] The technical solution adopted by a vehicle-mounted projection screen disclosed in the utility model is:

[0006] It includes an outer cover, a curtain, two symmetrical folding rods and a horizontal plate. The outer cover is rotatably connected to the reel. A motor is provided in the outer cover. The output shaft of the motor is connected to one end of the reel. One end of the curtain is wound around the outside of the reel. The other end of the curtain extends out of the outer cover. One end of the folding rod is rotatably connected to the outer cover. An elastic component is provided on the folding rod. The two ends of the elastic component are respectively connected to the two ends of the folding rod. The middle part of the elastic component touches the bending part of the folding rod. The other end of the folding rod is rotatably connected to the horizontal plate, and the other end of the curtain is fixedly connected to the horizontal plate.

[0007] As a preferred solution, the folding rod consists of an upper support rod and a lower support rod, one end of the upper support rod is connected to a first upper connector, one end of the lower support rod is connected to a first lower connector, and the first upper connector is rotatably connected to the first lower connector.

[0008] As a preferred solution, two upper connecting seats are fixedly connected to the inner wall of the outer cover, and the other end of the upper support rod is rotatably connected to the upper connecting seat. Two lower connecting seats are fixedly connected to the horizontal plate, and the other end of the lower support rod is rotatably connected to the lower connecting seat.

[0009] As a preferred solution, the other end of the upper support rod is connected to a second upper connector, which is rotatably connected to the upper connecting seat, and the other end of the lower support rod is connected to a second lower connector, which is rotatably connected to the lower connecting seat.

[0010] As a preferred solution, the elastic component includes a pull rope and a tension spring, one end of the pull rope is fixedly connected to the first upper connector, and the other end of the pull rope is fixedly connected to one end of the tension spring, a first groove is provided on the first upper connector, and a second groove is provided on the first lower connector, the middle part of the pull rope is inserted into the first groove and the second groove, and the other end of the tension spring is fixedly connected to the second lower connector.

[0011] As a preferred solution, the inner wall of the outer cover is provided with two electromagnetic locks, and a latch extends from the second upper connector, and the latch is inserted between the lock tongue of the electromagnetic lock and the inner wall of the outer cover.

[0012] As a preferred solution, the motor is a brake motor.

[0013] As a preferred solution, the inner wall of the outer cover is provided with a first bracket and a second bracket, the first bracket is fixedly connected to the motor, the output shaft of the motor is fixedly connected to the first connecting wheel, the outer side of the first connecting wheel is fixedly connected to the inner wall of the reel, the second bracket is rotatably connected to the second connecting wheel, the outer side of the second connecting wheel is fixedly connected to the inner wall of the reel, and the first connecting wheel and the second connecting wheel are respectively close to the two ends of the reel.

[0014] As a preferred solution, the outer cover is provided with a cover plate, which has a slot, and the curtain and folding rod extend from the slot. The inner contour of the slot is the same as the outer contour of the horizontal plate, and the curtain pulls the horizontal plate up and snaps into the slot.

[0015] The beneficial effects of the vehicle-mounted projection screen disclosed in the utility model are:

[0016] The outer cover is embedded in the roof of the outer compartment, and the output shaft of the motor drives the reel to rotate forward. The reel reels up the screen, allowing the screen to push the horizontal plate up and into the outer cover. The horizontal plate compresses the folding rod while rising, thereby storing all the screen components into the outer cover. This reduces the size of the vehicle-mounted projection screen and the internal area of ​​the outer compartment. The outer cover can also protect the motor, folding rod and other components.

[0017] The output shaft of the motor drives the reel to slowly reverse, the reel spreads out the curtain, the elastic component pulls the folding rod to unfold it, and the horizontal plate uses its own gravity and the push of the folding rod to unfold the curtain. After the curtain is fully unfolded, the motor drives the reel to rotate forward a short distance, tightening the curtain to make the surface smoother; since the curtain can be rolled up and stored, it can be displayed in a larger viewing area in the external compartment than the car TV, increasing the viewing area while reducing the area of ​​the external compartment's interior space after storage; since the screen uses reflected light to display images, it can effectively reduce the user's eye discomfort when watching movies. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a structural schematic diagram of a vehicle-mounted projection screen.

[0019] Figure 2 This is a schematic diagram of the back structure of a vehicle-mounted projection screen of the present utility model.

[0020] Figure 3 The utility model is a schematic diagram of the installation of an outer cover and a cover plate of a vehicle-mounted projection screen.

[0021] Figure 4 The utility model is a roll-up sectional view of a vehicle-mounted projection screen.

[0022] Figure 5 The utility model is a schematic diagram of the installation of a horizontal plate of a vehicle-mounted projection screen.

[0023] Figure 6 The utility model is a schematic diagram of the installation of a sealing plate of a vehicle-mounted projection screen.

[0024] Figure 7 The utility model is a schematic diagram of the upper support rod structure of a vehicle-mounted projection screen.

[0025] Figure 8 The utility model is a schematic diagram of the structure of the lower support rod of a vehicle-mounted projection screen.

[0026] Figure 9 The utility model is a schematic diagram of the installation of a first upper connector and a first lower connector of a vehicle-mounted projection screen.

[0027] Figure 10 The utility model is a cross-sectional view of an outer cover of a vehicle-mounted projection screen.

[0028] Figure 11 The utility model is a cross-sectional view of an outer cover of a vehicle-mounted projection screen. DETAILED DESCRIPTION

[0029] The present invention will be further described and explained below in conjunction with specific embodiments and accompanying drawings:

[0030] Please refer to Figure 1-Figure 3 and Figure 10 .

[0031] The utility model discloses a vehicle-mounted projection screen, which comprises an outer cover 1, a screen 2, two symmetrical folding rods 4 and a transverse plate 3.

[0032] The outer cover 1 is provided with a cover plate 11, and a slot 111 is opened on the cover plate 11. The interior of the outer cover 1 is connected to the outside through the slot 111 on the cover plate 11; the inner wall of the outer cover 1 is fixedly connected to two upper connecting seats 12, and the inner wall of the outer cover 1 is provided with two electromagnetic locks 13, and the lock tongues of the electromagnetic locks 13 face the upper connecting seats 12. The inner wall of the outer cover 1 is fixedly connected to a limit switch 14; the outer cover 1 is embedded in the roof of the external compartment, and the cover plate 11 is exposed on the inner wall of the external compartment, which can reduce the area of ​​the vehicle-mounted projection screen occupied by the internal space of the external compartment.

[0033] Please refer to Figure 1 、 Figure 3 and Figure 4 .

[0034] The outer cover 1 is rotatably connected to the reel 21. In this embodiment, the reel 21 is preferably a hollow cylindrical structure. A plurality of slots are opened on the inner wall of the reel 21. The plurality of slots are arranged around the inner wall of the reel 21, and the slots and the reel 21 are parallel to each other.

[0035] A motor 221 is provided in the outer cover 1. In this embodiment, the motor 221 is preferably a brake motor 221. A first bracket 22 and a second bracket 23 are provided on the inner wall of the outer cover 1. The first bracket 22 and the second bracket 23 are both fixedly connected to the inner wall of the outer cover 1.

[0036] Furthermore, the first bracket 22 is fixedly connected to the motor 221, and the output shaft of the motor 221 is fixedly connected to the first connecting wheel 222. A first clamping block extends from the outer side of the first connecting wheel 222, and the first clamping block on the outer side of the first connecting wheel 222 is clamped into one of the clamping grooves on the inner wall of the reel 21 and is fixedly connected; so that the output shaft of the motor 221 can drive the reel 21 to rotate through the first connecting wheel 222, and the connection method of the first clamping block clamping into the clamping groove can improve the firmness of the connection between the first connecting wheel 222 and the reel 21;

[0037] Furthermore, a second connecting wheel 231 is rotatably connected to the second bracket 23, and a second clamping block extends from the outer side of the second connecting wheel 231. The second clamping block on the outer side of the second connecting wheel 231 is clamped into one of the clamping grooves on the inner wall of the reel 21 and fixedly connected; the first connecting wheel 222 and the second connecting wheel 231 are respectively close to the two ends of the reel 21, so that the first bracket 22 and the second bracket 23 support the reel 21 to rotate in the outer cover 1.

[0038] One end of the curtain 2 is wound around the outside of the reel 21 , and the curtain 2 is rolled up or rolled out by the forward or reverse rotation of the reel 21 . The other end of the curtain 2 passes through the slot 111 and extends out of the outer cover 1 .

[0039] Please refer to Figure 1 and Figure 5 .

[0040] A through slot 31 is provided on the top of the horizontal plate 3. The through slot 31 passes through the horizontal plate 3 horizontally. The through slot 31 and the horizontal plate 3 are parallel to each other. The other end of the curtain 2 is placed in the through slot 31. A sticky strip 311 is provided in the through slot 31. Both sides of the sticky strip 311 are adhered to the inner wall of the through slot 31 and the other end of the curtain 2 respectively. Two limit blocks 33 are provided on the horizontal plate 3. The two limit blocks 33 are respectively close to the two ends of the horizontal plate 3. The limit blocks 33 are fixedly connected to the horizontal plate 3. The two limit blocks 33 block the two ends of the through slot 31. The two limit blocks 33 limit the sticky strip 311 in the through slot 31. The sticky strip 311 fixes the other end of the curtain 2 in the through slot 31, so that the other end of the curtain 2 can be fixedly connected to the horizontal plate 3.

[0041] Furthermore, the top of the horizontal plate 3 is fixedly connected to two lower connecting seats 32, and the through slot 31 is located at one side of the lower connecting seat 32. In this embodiment, the lower connecting seat 32 is preferably fixed to the horizontal plate 3 by screws; the bottom of the horizontal plate 3 is covered with a sealing plate 34, which hides the screws fixing the lower connecting seat 32;

[0042] The inner contour of the slot 111 is the same as the outer contour of the horizontal plate 3 . When the curtain 2 is rolled up, the curtain 2 pulls the horizontal plate 3 up and snaps into the slot 111 , so that the horizontal plate 3 is flush with the cover plate 11 .

[0043] Please refer to Figure 2 and Figure 6-Figure 9 .

[0044] One end of the folding rod 4 is rotatably connected to the outer cover 1, and the other end of the folding rod 4 is rotatably connected to the cross plate 3. The folding rod 4 extends out of the outer cover 1 through the slot 111. The folding rod 4 is composed of an upper support rod 41 and a lower support rod 42. In this embodiment, the upper support rod 41 and the lower support rod 42 are preferably hollow square tube structures.

[0045] Furthermore, one end of the upper support rod 41 is connected to the first upper connector 411, and the first upper connector 411 is inserted into one end of the upper support rod 41; one end of the lower support rod 42 is connected to the first lower connector 421, and the first lower connector 421 is inserted into one end of the lower support rod, and the first upper connector 411 is rotatably connected to the first lower connector 421; a first groove 412 is provided on the first upper connector 411, and a second groove 422 is provided on the first lower connector 421.

[0046] The other end of the upper support rod 41 is rotatably connected to the upper connecting seat 12, and the other end of the lower support rod 42 is rotatably connected to the lower connecting seat 32;

[0047] Furthermore, the other end of the upper support rod 41 is connected to a second upper connector 413, which is rotatably connected to the upper connecting seat 12. A latch 414 extends from the second upper connector 413, and the latch 414 is close to the lock tongue of the electromagnetic lock 13. The distance between the two upper connecting seats 12 is greater than the length of the two upper support rods 41; the other end of the lower support rod 42 is connected to a second lower connector 423, which is rotatably connected to the lower connecting seat 32. The distance between the two lower connecting seats 32 is greater than the length of the two lower support rods 42, which can avoid the two folding rods 4 from interfering with each other when folding.

[0048] The folding rod 4 is provided with an elastic component 43, the two ends of the elastic component 43 are respectively connected to the two ends of the folding rod 4, and the middle part of the elastic component 43 touches the bend of the folding rod 4. The elastic component 43 includes a pull rope 431 and a tension spring 432;

[0049] Furthermore, one end of the pull rope 431 passes through the upper support rod 41 and is fixedly connected to the first upper connector 411. The middle portion of the pull rope 431 is inserted into the first groove 412 and the second groove 422. The other end of the pull rope 431 passes through the lower support rod 42. The other end of the pull rope 431 is fixedly connected to one end of the tension spring 432. The other end of the tension spring 432 is fixedly connected to the second lower connector 423.

[0050] When the folding rod 4 is in the folded state, the first upper connector 411 rotates a certain angle on the first lower connector 421. The first upper connector 411 pulls the pull rope 431 to stretch the tension spring 432, so that the pull rope 431 generates a rebound force. The pull rope 431 can pull the first upper connector 411 to rotate on the first lower connector 421, allowing the folding rod 4 to unfold.

[0051] Please refer to Figures 1-11 .

[0052] When the user needs to unfold the curtain 2, the output shaft of the motor 221 drives the drum 21 to slowly reverse, the drum 21 spreads the curtain 2, the pull rope 431 pulls the folding rod 4 to unfold, and the horizontal plate 3 uses its own gravity and the push of the folding rod 4 to pull the curtain 2 from the slot 111 to slowly move out of the outer cover 1; because the motor 221 has a Hall function, the number of revolutions of the motor 221 can be recorded, and the unfolding distance of the curtain 2 is set to the number of revolutions of the motor 221, so that the motor 221 is synchronized after the curtain 2 is fully unfolded. Stop; when the curtain 2 is fully unfolded, the stop 414 of the second upper connector 413 is inserted between the lock tongue of the electromagnetic lock 13 and the inner wall of the outer cover 1, so that the second upper connector 413 cannot rotate, so that the folding rod 4 maintains the current state, and the output shaft of the motor 221 drives the reel 21 to rotate forward by a certain angle, so that the reel 21 tightens the curtain 2 and makes the surface of the curtain 2 flatter. Since the motor 221 is a brake motor 221, when the motor 221 stops running, the motor 221 can keep the reel 21 at the current angle.

[0053] When the user needs to retract the curtain 2, the output shaft of the motor 221 drives the drum 21 to slowly reverse, so that the taut curtain 2 becomes loose, and the lock tongue of the electromagnetic lock 13 can be more easily unlocked to apply to the limit of the latch 414. After the latch 414 contacts the limit, the second upper connector 413 can rotate on the upper connecting seat 12; the output shaft of the motor 221 drives the drum 21 to rotate forward, and the drum 21 rewinds the curtain 2, so that the curtain 2 pulls the horizontal plate 3 up, and the horizontal plate 3 pushes and compresses the two folding rods 4 while rising. After the curtain 2 is completely retracted into the outer cover 1, the two folding rods 4 are also retracted into the outer cover 1, the horizontal plate 3 is stuck in the slot 111 and touches the limit switch 14, and the motor 221 stops running. Since the motor 221 is a brake motor 221, when the motor 221 stops running, the motor 221 can keep the drum 21 at the current angle.

[0054] The utility model provides a vehicle-mounted projection screen, wherein an outer cover is embedded in the roof of an external vehicle compartment, and a reel is driven by an output shaft of a motor to rotate forward, and the reel rewinds the screen cloth, so that the screen cloth drives a horizontal plate to rise and be stored in the outer cover, and the horizontal plate compresses a folding rod while rising, thereby storing all parts of the screen cloth in the outer cover, reducing the size of the vehicle-mounted projection screen, reducing the internal area occupied by the external vehicle compartment, and being able to protect parts such as the motor and the folding rod through the outer cover;

[0055] The output shaft of the motor drives the reel to slowly reverse, the reel spreads out the curtain, the elastic component pulls the folding rod to unfold it, and the horizontal plate uses its own gravity and the push of the folding rod to unfold the curtain. After the curtain is fully unfolded, the motor drives the reel to rotate forward a short distance, tightening the curtain to make the surface smoother; since the curtain can be rolled up and stored, it can be displayed in a larger viewing area in the external compartment than the car TV, increasing the viewing area while reducing the area of ​​the external compartment's interior space after storage; since the screen uses reflected light to display images, it can effectively reduce the user's eye discomfort when watching movies.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the scope of protection of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A vehicle-mounted projection screen, characterized in that: It includes outer cover, curtain, two symmetrical folding rods and horizontal panels; The outer cover is rotatably connected to the reel, and a motor is provided in the outer cover. The output shaft of the motor is connected to one end of the reel, one end of the curtain is wound around the outside of the reel, and the other end of the curtain extends out of the outer cover; One end of the folding rod is rotatably connected to the outer cover, and an elastic component is provided on the folding rod, and two ends of the elastic component are respectively connected to two ends of the folding rod, and the middle part of the elastic component touches the bend of the folding rod; The other end of the folding rod is rotatably connected to the horizontal plate, and the other end of the curtain is fixedly connected to the horizontal plate.

2. The vehicle-mounted projection screen according to claim 1, wherein: The folding rod is composed of an upper support rod and a lower support rod, one end of the upper support rod is connected to a first upper connector, one end of the lower support rod is connected to a first lower connector, and the first upper connector is rotatably connected to the first lower connector.

3. The vehicle-mounted projection screen according to claim 2, wherein: The inner wall of the outer cover is fixedly connected to two upper connecting seats, the other end of the upper support rod is rotatably connected to the upper connecting seat, and the horizontal plate is fixedly connected to two lower connecting seats, the other end of the lower support rod is rotatably connected to the lower connecting seat.

4. The vehicle-mounted projection screen according to claim 3, wherein: The other end of the upper support rod is connected to a second upper connector, which is rotatably connected to the upper connecting seat. The other end of the lower support rod is connected to a second lower connector, which is rotatably connected to the lower connecting seat.

5. The vehicle-mounted projection screen according to claim 4, wherein: The elastic component includes a pull rope and a tension spring, one end of the pull rope is fixedly connected to the first upper connector, and the other end of the pull rope is fixedly connected to one end of the tension spring. A first groove is provided on the first upper connector, and a second groove is provided on the first lower connector. The middle part of the pull rope is inserted into the first groove and the second groove, and the other end of the tension spring is fixedly connected to the second lower connector.

6. The vehicle-mounted projection screen according to claim 5, wherein: The inner wall of the outer cover is provided with two electromagnetic locks, and a latch extends from the second upper connector, and the latch is inserted between the lock tongue of the electromagnetic lock and the inner wall of the outer cover.

7. The vehicle-mounted projection screen according to claim 6, wherein: The motor is a brake motor.

8. The vehicle-mounted projection screen according to claim 7, wherein: The inner wall of the outer cover is provided with a first bracket and a second bracket, the first bracket is fixedly connected to the motor, the output shaft of the motor is fixedly connected to the first connecting wheel, the outer side of the first connecting wheel is fixedly connected to the inner wall of the reel, the second bracket is rotatably connected to the second connecting wheel, the outer side of the second connecting wheel is fixedly connected to the inner wall of the reel, and the first connecting wheel and the second connecting wheel are respectively close to the two ends of the reel.

9. The vehicle-mounted projection screen according to claim 8, wherein: The outer cover is covered with a cover plate, and a slot is opened on the cover plate. The curtain and the folding rod extend from the slot. The inner contour of the slot is the same as the outer contour of the horizontal plate. The curtain pulls the horizontal plate to rise and snap into the slot.

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