Exhibit screen projection device for science and technology museum exhibition

Abstract

The utility model relates to the field of screen projection devices, and discloses an exhibit screen projection device for science and technology museum exhibition, which comprises a mounting suspended ceiling and is characterized in that the bottom end of the mounting suspended ceiling is detachably connected with a projector, the inner wall of the mounting suspended ceiling is rotatably connected with a rotating ring, the bottom end of the rotating ring is fixedly connected with a connecting rod, and the connecting rod is fixedly connected with the mounting suspended ceiling. A disc is fixedly connected to the bottom end of the connecting rod, a support is hinged to the side wall of the disc, a clamping plate is hinged to the tail end of the support, a sliding rod is fixedly connected to the top end of the clamping plate, a limiting assembly is elastically connected to the inner wall of the rotating ring through a reset spring b, and the limiting assembly comprises a limiting block. And the outer wall of the limiting block is clamped with the inner wall of the limiting groove, a groove is formed in the side wall of the projector, and a trapezoidal block is fixedly connected to the inner wall of the clamping plate. According to the utility model, the projector can be conveniently fixed on an installation ceiling without the help of additional auxiliary tools.

Description

TECHNICAL FIELD

[0001] The utility model relates to a screen projection device field especially uses the exhibit screen projection device for science and technology museum exhibition. BACKGROUND

[0002] The exhibit screen projection device for science and technology museum exhibition is a kind of technical equipment for showing information, image and video content, aims to improve the interactive experience and information absorption capacity of audience.This kind of device usually combines multimedia technology and display technology, can provide audience with information-rich, lively and interesting display effect.

[0003] In science and technology museum, this screen projection device not only can show information unilaterally, but also can interact with audience, such as realizing touch display or operating through mobile device.Audience can deepen understanding in interaction, improve participation, and then stimulate their interest and curiosity to science.

[0004] At present, the exhibit screen projection device for science and technology museum exhibition produces image through bulb or laser source, and projects it on a plane surface (such as curtain or wall surface), but projector is usually installed at high place, and is usually fixed by using screw nut, needs additional auxiliary tool, is more troublesome, secondly, lens is exposed for a long time, is easy to contaminate dust, needs frequent cleaning, therefore, the exhibit screen projection device for science and technology museum exhibition is provided to solve the above problems. UTILITARY MODEL CONTENT

[0005] In order to make up for the above shortcomings, the utility model provides an exhibit screen projection device for science and technology museum exhibition, aiming at improving the problem that installation needs additional auxiliary tool in prior art, is more troublesome, lens is exposed for a long time, and dust needs frequent cleaning.

[0006] In order to realize the above purpose, the utility model adopts the following technical scheme: an exhibit screen projection device for science and technology museum exhibition, including installation ceiling, the installation ceiling bottom end is detachably connected with projector, the installation ceiling inner wall is rotatably connected with swivel, the swivel bottom end is fixedly connected with connecting rod, the connecting rod bottom end is fixedly connected with disc, the disc side wall is hinged with support, the support tail end is hinged with clamping plate, the clamping plate top end is fixedly connected with slide rod, the swivel inner wall is elastically connected with limiting assembly through return spring b, the projector side wall is provided with recess, the clamping plate inner wall is fixedly connected with trapezoidal block.

[0007] As a further description of the above technical scheme:

[0008] The lens is arranged on the front end of the projector, the rotating shaft is rotatably connected to the inner wall of the projector, the pull rod is elastically connected to the inner wall of the rotating shaft through the reset spring a, the clamping block is fixedly connected to the outer wall of the pull rod, the clamping groove is arranged on the outer wall of the projector, and the protective plate is fixedly connected to the outer wall of the rotating shaft.

[0009] As a further description of the above technical solution:

[0010] The limiting assembly comprises a limiting block, one end of the reset spring b is fixedly connected to the back of the limiting block, the other end of the reset spring b is fixedly connected to the inner wall of the rotating ring, the limiting groove is arranged on the inner wall of the installation ceiling, and the outer wall of the limiting block is clamped with the inner wall of the limiting groove.

[0011] As a further description of the above technical solution:

[0012] The outer wall of the connecting rod is slidably connected with the inner wall of the installation ceiling.

[0013] As a further description of the above technical solution:

[0014] The outer wall of the sliding rod is slidably connected with the inner wall of the installation ceiling.

[0015] As a further description of the above technical solution:

[0016] The outer wall of the trapezoidal block is clamped with the inner wall of the groove.

[0017] As a further description of the above technical solution:

[0018] One end of the reset spring a is fixedly connected to the inner wall of the rotating shaft, and the other end of the reset spring a is fixedly connected to the inner end of the pull rod.

[0019] As a further description of the above technical solution:

[0020] The outer wall of the clamping block is slidably connected with the inner wall of the rotating shaft, and the outer wall of the clamping block is clamped with the inner wall of the clamping groove.

[0021] The utility model has the advantages of the following:

[0022] 1、The utility model discloses a projector fixing device, which comprises a projector, an installation ceiling, a limiting block, a rotating ring, a bracket, a clamping groove, a clamping block, a reset spring b, a trapezoidal block and a groove.

[0023] 2. The utility model discloses a lens is shielded to prevent dust from adhering, and when needing to shield the lens, the clamping block is separated from the clamping groove after the pull rod is pulled outwards, and the protective plate is turned over to shield the lens, dust is prevented from entering, and the cleaning period is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is an overall front view schematic drawing of the exhibit screen projection device for science and technology museum exhibition.

[0025] Figure 2 It is an overall bottom view schematic drawing of the exhibit screen projection device for science and technology museum exhibition.

[0026] Figure 3 It is an installation ceiling section view schematic drawing of the exhibit screen projection device for science and technology museum exhibition.

[0027] Figure 4 It is a protective plate front view schematic drawing of the exhibit screen projection device for science and technology museum exhibition.

[0028] Legend:

[0029] 1, projector, 2, lens, 3, pivot, 4, protective plate, 5, reset spring a, 6, pull rod, 7, clamping block, 8, clamping groove, 9, swivel ring, 10, connecting rod, 11, disc, 12, support, 13, clamping plate, 14, slide rod, 15, reset spring b, 16, limit block, 17, limit groove, 18, trapezoidal block, 19, recess, 20, installation ceiling. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the utility model.

[0031] Reference Figure 1 and Figure 4The utility model provides an embodiment provided by the utility model discloses a kind of: including installation ceiling 20, the bottom end of installation ceiling 20 is detachably connected with projector 1, projector 1 front end is provided with lens 2, projector 1 inner wall is rotatably connected with pivot 3, pivot 3 inner wall is elastically connected with pull rod 6 by reset spring a5, reset spring a5 one end is fixedly connected with pivot 3 inner wall, reset spring a5 other end is fixedly connected with pull rod 6 inboard end, pull rod 6 can be stretched reset spring a5 moves to outside by pulling outwards, simultaneously, reset spring a5 because the elastic force of deformation generates to pull rod 6 an inwards pull, promote its reset, pull rod 6 outer wall is fixedly connected with clamping block 7, clamping block 7 outer wall is slidably connected with pivot 3 inner wall, projector 1 outer wall is set with clamping groove 8, clamping block 7 outer wall and clamping groove 8 inner wall are clamped, in the process of pull rod 6 is pulled outwards, clamping block 7 is extracted from clamping groove 8 along pivot 3 inner wall, pivot 3 outer wall is fixedly connected with protection plate 4, when clamping block 7 is extracted from clamping groove 8, can rotate pull rod 6 drive pivot 3 rotation, to make pivot 3 drive protection plate 4 overturn, block lens 2, protect lens 2, after overturning, release pull rod 6, reset spring a5 pull back pull rod 6 to original position, drive clamping block 7 and be inserted into clamping groove 8 and fix the position of protection plate 4.

[0032] Refer to Figures 1-3 , the inner wall of installation ceiling 20 is rotatably connected with a rotating ring 9, the bottom end of the rotating ring 9 is fixedly connected with a connecting rod 10, the outer wall of the connecting rod 10 is slidably connected with the inner wall of the installation ceiling 20, the bottom end of the connecting rod 10 is fixedly connected with a disc 11, rotating the rotating ring 9 can make the connecting rod 10 drive the disc 11 to rotate, the side wall of the disc 11 is hingedly connected with a support 12, the end of the support 12 is hingedly connected with a clamping plate 13, rotating the disc 11 drives the support 12 to change the angle, thereby pulling the two sets of clamping plates 13 to move closer to each other, the top end of the clamping plate 13 is fixedly connected with a sliding rod 14, the outer wall of the sliding rod 14 is slidably connected with the inner wall of the installation ceiling 20, sliding the sliding rod 14 along the inner wall of the installation ceiling 20 ensures that the clamping plates 13 move closer to each other without deviation, the inner wall of the rotating ring 9 is elastically connected with a limiting assembly through a reset spring b15, the limiting assembly includes a limiting block 16, one end of the reset spring b15 is fixedly connected with the back of the limiting block 16, the other end of the reset spring b15 is fixedly connected with the inner wall of the rotating ring 9, pressing the limiting block 16 inward can extrude the reset spring b15 to move inward, at the same time, the reset spring b15 generates a repulsive force to the limiting block 16 due to deformation, which promotes the reset, the inner wall of the installation ceiling 20 is provided with a limiting groove 17, the outer wall of the limiting block 16 is clamped with the inner wall of the limiting groove 17, when the limiting block 16 moves to the inner side of the rotating ring 9 to be disengaged from the limiting groove 17, the rotating ring 9 can be rotated to drive the disc 11 to rotate, drive the two sets of supports 12 to change the angle, the side wall of the projector 1 is provided with a groove 19, the inner wall of the clamping plate 13 is fixedly connected with a trapezoidal block 18, the outer wall of the trapezoidal block 18 is clamped with the inner wall of the groove 19, the clamping plates 13 move closer to each other, the trapezoidal block 18 is inserted into the groove 19, and the projector 1 is fixed on the installation ceiling 20.

[0033] Working principle: when installing the projector 1, press the limiting block b16 inward to make it extrude the reset spring b15 to retract, and after the limiting groove 17 is disengaged, rotate the rotating ring 9 to make the connecting rod 10 drive the disc 11 to rotate, so that the angle of the two groups of supports 12 changes, and the two groups of clamping plates 13 are pulled to each other to clamp and fix the projector 1 placed on the inner side. During the fixing process, the trapezoidal block 18 is gradually clamped into the groove 19, and when the trapezoidal block 18 is completely clamped into the groove 19, and the inner wall of the clamping plate 13 is in close contact with the side wall of the projector 1, the clamping plate 13 fixes the projector 1 on the installation ceiling 20, and then the limiting block 16 is loosened. The reset spring b15 pushes the limiting block 16 into the limiting groove 17 to fix the position of the clamping plate 13. When the projector 1 is not turned on and does not need to be used, pull the pull rod 6 outward to make the clamping block 7 slide along the inner wall of the rotating shaft 3 and slide out of the clamping groove 8, then rotate the pull rod 6 to make the rotating shaft 3 drive the protective plate 4 to rotate, rotate 90°, and the protective plate 4 shields the lens 2 to protect the lens 2 and prevent dust from adhering.

[0034] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing detailed description of the present application, for the skilled in the art, it can still be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the scope of the present application.

Claims

1. A projection screen device for exhibits in a science and technology museum, comprising a ceiling installation (20), characterized in that: The bottom end of the installation ceiling (20) is detachably connected to the projector (1), the inner wall of the installation ceiling (20) is rotatably connected to a swivel (9), the bottom end of the swivel (9) is fixedly connected to a connecting rod (10), the bottom end of the connecting rod (10) is fixedly connected to a disc (11), the side wall of the disc (11) is hinged to a bracket (12), the end of the bracket (12) is hinged to a splint (13), the top end of the splint (13) is fixedly connected to a slide rod (14), the inner wall of the swivel (9) is elastically connected to a limiting component through a reset spring b (15), a groove (19) is provided on the side wall of the projector (1), and the inner wall of the splint (13) is fixedly connected to a trapezoidal block (18).

2. The device for projecting exhibits on a screen for use in a science and technology museum according to claim 1, characterized in that: The front end of the projector (1) is provided with a lens (2), the inner wall of the projector (1) is rotatably connected to a rotating shaft (3), the inner wall of the rotating shaft (3) is elastically connected to a pull rod (6) via a reset spring a (5), the outer wall of the pull rod (6) is fixedly connected to a clamping block (7), the outer wall of the projector (1) is provided with a clamping slot (8), and the outer wall of the rotating shaft (3) is fixedly connected to a protective plate (4).

3. The device for projecting exhibits on a screen for use in a science and technology museum according to claim 1, characterized in that: The limiting assembly includes a limiting block (16), one end of the return spring b (15) is fixedly connected to the back of the limiting block (16), the other end of the return spring b (15) is fixedly connected to the inner wall of the rotating ring (9), the inner wall of the installation ceiling (20) is provided with a limiting groove (17), and the outer wall of the limiting block (16) is snap-fitted to the inner wall of the limiting groove (17).

4. The device for projecting exhibits on a screen for use in a science and technology museum according to claim 1, characterized in that: The outer wall of the connecting rod (10) is slidably connected to the inner wall of the installation ceiling (20).

5. The device for projecting exhibits on a screen for use in a science and technology museum according to claim 1, characterized in that: The outer wall of the slide bar (14) is slidably connected to the inner wall of the installation ceiling (20).

6. The device for projecting exhibits on a screen for use in a science and technology museum according to claim 1, characterized in that: The outer wall of the trapezoidal block (18) is clamped with the inner wall of the groove (19).

7. The device for projecting exhibits on a screen for use in a science and technology museum according to claim 2, characterized in that: One end of the return spring a (5) is fixedly connected to the inner wall of the rotating shaft (3), and the other end of the return spring a (5) is fixedly connected to the inner end of the pull rod (6).

8. The device for projecting exhibits on a screen for use in a science and technology museum according to claim 2, characterized in that: The outer wall of the clamping block (7) is slidably connected to the inner wall of the rotating shaft (3), and the outer wall of the clamping block (7) is clamped to the inner wall of the clamping groove (8).

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