Exhibition hall projection equipment

Abstract

The utility model discloses an exhibition hall projection device which comprises a projector body, a lens is fixedly installed on the front face of the projector body, an installation plate is fixedly installed at the upper end of the projector body, a motor is arranged on the side wall of the installation plate, and the motor drives a cleaning rod to rotate through transmission of a rotating rod and a half gear. The cleaning rod cleans the surface of the dustproof plate, the probability that the dustproof plate is blocked is reduced, meanwhile, limiting rods are arranged on the two sides of the cleaning rod, the situation that the lens is damaged due to the fact that the rotating angle of the cleaning rod is too large is prevented, and meanwhile through the design of a local gear and a half gear on a rotating rod, it can be avoided that a motor always drives the cleaning rod to rotate; after the rotating rod drives the half gear for one time, a local gear of the rotating rod is stopped at the end away from the half gear, the cleaning rod can do pendulum bob motion on the dustproof plate under the action of gravity to indirectly supply power to the motor, and the energy-saving effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of projection equipment, in particular to exhibition hall projection equipment. Background Art

[0002] A common exhibition hall projection equipment is a ceiling-mounted projector. This device is usually installed on the ceiling of the exhibition hall and can project images or videos downward onto a designated screen or wall. Ceiling-mounted projectors are available in a variety of resolutions, brightness, and sizes to suit different display needs. In addition, some ceiling-mounted projectors are equipped with interactive functions that allow viewers to interact with the projected content.

[0003] The prior art provides a smart exhibition hall projection device (Announcement No.: CN218068544U), which includes a projector body, a projection lens and a vent. The projection lens is arranged in the middle of the front of the projector body, and vents are provided on both sides of the projector body close to the projection lens. A switch and a plug hole are arranged on the back of the projector body; a limit mechanism is arranged on the outside of the plug hole, and the limit mechanism includes a fixed plate, a movable plate, a connecting rod, a spring, a fixed seat, a slide groove and a slider, and the fixed plate is arranged below the plug hole. The smart exhibition hall projection device prevents the power plug on the smart exhibition hall projection device from loosening after being accidentally touched by the arrangement of the fixed plate and the movable plate, increases the friction between the support block and the placement position by the bottom plate, and makes the placement of the smart exhibition hall projection device more stable. The dustproof plate provides the smart exhibition hall projection device with a dustproof structure to prevent external dust from entering the interior of the projector body.

[0004] But the device still has the following defects:

[0005] When the device is in use, impurities are easily attached to the outer side of the dustproof plate. Excessive accumulation of impurities can easily cause clogging of the dustproof plate, which will lead to reduced heat dissipation performance of the device and make the device high in temperature during use, which is not conducive to the use of electronic components in the device. Therefore, we need to propose an exhibition hall projection device. Utility Model Content

[0006] The utility model aims to provide an exhibition hall projection device, which uses a cleaning strip to clean the outer side of a dustproof plate to avoid clogging of the dustproof plate by impurities, so as to solve the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] An exhibition hall projection device comprises a projector body, a lens is fixedly mounted on the front of the projector body, two symmetrically distributed dustproof plates are fixedly mounted on the front of the projector body, and cleaning components for cleaning the surfaces of the dustproof plates are arranged on the outer sides of the two dustproof plates;

[0009] The cleaning assembly comprises a mounting plate, the upper end of the projector body is fixedly connected to two mounting plates which are symmetrically distributed, the front sides of the two mounting plates are fixedly installed with protective shells, the front sides of the two mounting plates are fixedly installed with motors, the output shaft of the motor is fixedly connected to a rotating rod, the outer side of the gear part of the rotating rod is meshed with a half gear, and the lower end of the half gear is fixedly connected to a cleaning rod;

[0010] The lower end of the projector body is provided with a mounting assembly for mounting the projector body.

[0011] Preferably, the interior of the half gear is rotatably connected to a mounting rod, and the mounting rod is fixedly mounted on the upper front end of the projector body.

[0012] Preferably, four groups of symmetrically distributed limit rods are fixedly installed on the front of the projector body, the cleaning rod is rotatably connected to the outside of the dustproof plate, the gear portion of the cleaning rod is a local gear, and the cleaning rod is arranged between two matching limit rods.

[0013] Preferably, the mounting assembly includes a first mounting seat, and the lower end of the projector body is fixedly connected with four groups of symmetrically distributed first mounting seats, and two of the first mounting seats used in conjunction with each other are internally rotatably connected with a support rod, and the lower end of the support rod is fixedly connected with a base plate, and an adjustment assembly for adjusting the angle of the projector body is arranged between the base plate and the projector body.

[0014] Preferably, the upper end of the support rod is fixedly connected with two symmetrically distributed rotating shafts, and the two rotating shafts are rotatably connected to the first mounting seat.

[0015] Preferably, the adjustment component includes a second mounting seat, and the lower end of the projector body is fixedly connected with two groups of symmetrically distributed second mounting seats, the two groups of second mounting seats are internally rotatably connected with rotating blocks, the lower end of the rotating block is fixedly connected with a screw, the outer side of the screw is threadedly connected with a self-locking nut, the outer side of the self-locking nut is rotatably connected with two groups of symmetrically distributed limit blocks, and the lower ends of the two groups of limit blocks are fixedly connected with fixed rods.

[0016] Preferably, a slide groove is provided inside the limit block, the self-locking nut is slidably connected inside the slide groove, and the fixing rod is fixedly installed on the upper end of the base plate.

[0017] Preferably, a switch is fixedly mounted on the side wall of the projector body, and a socket is fixedly mounted on the side wall of the projector body.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The utility model has a mounting plate fixedly mounted on the upper end of a projector body, a motor is arranged on the side wall of the mounting plate, the motor drives the cleaning rod to rotate through a rotating rod and a half gear, the cleaning rod cleans the surface of the dustproof plate, and the probability of the dustproof plate being blocked is reduced, and at the same time, limit rods are arranged on both sides of the cleaning rod to prevent the cleaning rod from rotating at an excessively large angle to damage the lens, and at the same time, through the design of the local gear and the half gear on the rotating rod, it can be avoided that the motor drives the cleaning rod to rotate all the time, after the rotating rod drives the half gear once, the local gear of the rotating rod can be stopped at the end away from the half gear, and the cleaning rod will do a pendulum motion on the dustproof plate under the action of gravity, and indirectly power the motor, thereby achieving the effect of energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the partial internal structure of the utility model;

[0022] Figure 3 Practical Figure 2 A magnified view of area A in;

[0023] Figure 4 It is a schematic diagram of the expanded structure of the adjustment component of the utility model.

[0024] In the figure: 1. projector body; 2. lens; 3. dust plate; 4. cleaning assembly; 41. mounting plate; 42. protective shell; 43. motor; 44. rotating rod; 45. half gear; 46. mounting rod; 47. cleaning rod; 48. limiting rod; 5. switch; 6. socket; 7. first mounting seat; 8. support rod; 9. bottom plate; 10. adjustment assembly; 101. second mounting seat; 102. rotating block; 103. screw; 104. self-locking nut; 105. limiting block; 106. fixing rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-4 , the utility model provides a technical solution:

[0027] An exhibition hall projection device comprises a projector body 1, a lens 2 is fixedly mounted on the front of the projector body 1, two symmetrically distributed dustproof plates 3 are fixedly mounted on the front of the projector body 1, and cleaning components 4 for cleaning the surfaces of the dustproof plates 3 are arranged on the outer sides of the two dustproof plates 3;

[0028] The cleaning assembly 4 includes a mounting plate 41, and two symmetrically distributed mounting plates 41 are fixedly connected to the upper end of the projector body 1, and a protective shell 42 is fixedly installed on the front of the two mounting plates 41, and a motor 43 is fixedly installed on the front of the two mounting plates 41, and a rotating rod 44 is fixedly connected to the output shaft of the motor 43, and a half gear 45 is meshed on the outer side of the gear part of the rotating rod 44, and a cleaning rod 47 is fixedly connected to the lower end of the half gear 45;

[0029] A mounting assembly for mounting the projector body 1 is provided at the lower end of the projector body 1 .

[0030] In addition, the type of the motor 43 is a forward and reverse motor 43 .

[0031] The interior of the half gear 45 is rotatably connected to a mounting rod 46 , and the mounting rod 46 is fixedly mounted on the upper front end of the projector body 1 .

[0032] Exemplarily, the mounting rod 46 mounts the half gear 45, and the half gear 45 plays a transmission role.

[0033] Four groups of symmetrically distributed limit rods 48 are fixedly installed on the front of the projector body 1. The cleaning rod 47 is rotatably connected to the outside of the dustproof plate 3. The gear part of the cleaning rod 47 is a local gear. The cleaning rod 47 is arranged between two matching limit rods 48.

[0034] Furthermore, the cleaning rod 47 cleans the surface of the dustproof plate 3 , and when the cleaning rod 47 moves, the limiting rod 48 limits the cleaning rod 47 .

[0035] The mounting assembly includes a first mounting seat 7, and four groups of symmetrically distributed first mounting seats 7 are fixedly connected to the lower end of the projector body 1. The two first mounting seats 7 used in conjunction with each other are internally rotatably connected to a support rod 8, and the lower end of the support rod 8 is fixedly connected to a base plate 9, and an adjustment assembly 10 for adjusting the angle of the projector body 1 is arranged between the base plate 9 and the projector body 1.

[0036] Preferably, the support rod 8 cooperates with the first mounting seat 7 and the adjustment assembly 10 so that the projector body 1 can be adjusted in angle, so as to better project the projection onto the display surface.

[0037] The upper end of the support rod 8 is fixedly connected with two symmetrically distributed rotating shafts, and the two rotating shafts are rotatably connected to the first mounting seat 7 .

[0038] The adjustment component 10 includes a second mounting seat 101, and the lower end of the projector body 1 is fixedly connected with two groups of symmetrically distributed second mounting seats 101, the two groups of second mounting seats 101 are internally rotatably connected with a rotating block 102, the lower end of the rotating block 102 is fixedly connected with a screw rod 103, the outer side of the screw rod 103 is threadedly connected with a self-locking nut 104, the outer side of the self-locking nut 104 is rotatably connected with two groups of symmetrically distributed limit blocks 105, and the lower ends of the two groups of limit blocks 105 are fixedly connected with a fixing rod 106.

[0039] In this embodiment, the height of the screw rod 103 is controlled by rotating the self-locking nut 104 , and the front end of the projector body 1 is driven to be raised or lowered by the screw rod 103 , thereby adjusting the angle of the projector body 1 .

[0040] A sliding groove is provided inside the limiting block 105 , the self-locking nut 104 is slidably connected inside the sliding groove, and the fixing rod 106 is fixedly installed on the upper end of the bottom plate 9 .

[0041] On the other hand, the self-locking nut 104 slides inside the sliding groove of the limiting block 105 , and the sliding groove serves to limit the self-locking nut 104 .

[0042] A switch 5 is fixedly installed on the side wall of the projector body 1 , and a socket 6 is fixedly installed on the side wall of the projector body 1 .

[0043] It is worth mentioning that the switch 5 controls the use of the projector body 1, and the socket 6 facilitates the connection of the projector body 1 with different external devices.

[0044] Working principle: When the utility model is used, the device is placed on the projection position, and a hole can be opened inside the bottom plate 9, and the bottom plate 9 is fixed to the ceiling by means of bolts or the like. The height of the screw rod 103 is controlled by rotating the self-locking nut 104, and the front end of the projector body 1 is driven to rise or lower by the screw rod 103, so as to adjust the angle of the projector body 1, and different connecting wires are inserted into the socket 6 to connect the projector body 1 with the external device, and the switch 5 is turned on, and the projector body 1 starts to project through the lens 2;

[0045] When the device starts to be used, the motor 43 is turned on. The motor 43 is driven through the rotating rod 44 and the half gear 45 to drive the cleaning rod 47 to rotate. The cleaning rod 47 cleans the surface of the dustproof plate 3 to reduce the probability of clogging of the dustproof plate 3. At the same time, limit rods 48 are arranged on both sides of the cleaning rod 47 to prevent the cleaning rod 47 from rotating at too large an angle and causing damage to the lens 2.

[0046] Although the 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. An exhibition hall projection device, characterized in that: include: A projector body (1), a lens (2) being fixedly mounted on the front of the projector body (1); Two dustproof plates (3) are fixedly mounted on the front of the projector body (1) and are symmetrically distributed. The outer sides of the two dustproof plates (3) are provided with cleaning components (4) for cleaning the surfaces of the dustproof plates (3); The cleaning assembly (4) comprises a mounting plate (41), the upper end of the projector body (1) is fixedly connected to two symmetrically distributed mounting plates (41), the front faces of the two mounting plates (41) are fixedly mounted with protective shells (42), the front faces of the two mounting plates (41) are fixedly mounted with motors (43), the output shaft of the motor (43) is fixedly connected to a rotating rod (44), the outer side of the gear portion of the rotating rod (44) is meshed with a half gear (45), and the lower end of the half gear (45) is fixedly connected to a cleaning rod (47); A mounting assembly is arranged at the lower end of the projector body (1) and is used to mount the projector body (1).

2. The exhibition hall projection device according to claim 1, characterized in that: The interior of the half gear (45) is rotatably connected to a mounting rod (46), and the mounting rod (46) is fixedly mounted on the upper front end of the projector body (1).

3. The exhibition hall projection device according to claim 1, characterized in that: Four groups of symmetrically distributed limit rods (48) are fixedly mounted on the front of the projector body (1); the cleaning rod (47) is rotatably connected to the outside of the dustproof plate (3); the gear portion of the cleaning rod (47) is a partial gear; the cleaning rod (47) is arranged between two matching limit rods (48).

4. The exhibition hall projection device according to claim 1, characterized in that: The mounting assembly comprises a first mounting seat (7), the lower end of the projector body (1) being fixedly connected to four groups of symmetrically distributed first mounting seats (7), two first mounting seats (7) being used in conjunction with each other being rotatably connected to the inside thereof with a support rod (8), the lower end of the support rod (8) being fixedly connected to a bottom plate (9), and an adjustment assembly (10) for adjusting the angle of the projector body (1) being arranged between the bottom plate (9) and the projector body (1).

5. The exhibition hall projection device according to claim 4, characterized in that: The upper end of the support rod (8) is fixedly connected to two symmetrically distributed rotating shafts, and the two rotating shafts are rotatably connected to the first mounting seat (7).

6. The exhibition hall projection device according to claim 4, characterized in that: The adjustment assembly (10) comprises a second mounting seat (101), the lower end of the projector body (1) is fixedly connected to two groups of symmetrically distributed second mounting seats (101), the two groups of second mounting seats (101) are rotatably connected to rotating blocks (102) inside, the lower end of the rotating block (102) is fixedly connected to a screw rod (103), the outer side of the screw rod (103) is threadedly connected to a self-locking nut (104), the outer side of the self-locking nut (104) is rotatably connected to two groups of symmetrically distributed limit blocks (105), and the lower ends of the two groups of limit blocks (105) are fixedly connected to fixed rods (106).

7. The exhibition hall projection device according to claim 6, characterized in that: A sliding groove is provided inside the limit block (105), the self-locking nut (104) is slidably connected inside the sliding groove, and the fixing rod (106) is fixedly mounted on the upper end of the bottom plate (9).

8. The exhibition hall projection device according to claim 1, characterized in that: A switch (5) is fixedly mounted on the side wall of the projector body (1), and a socket (6) is fixedly mounted on the side wall of the projector body (1).

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