Three-color laser projection device stable in operation

By introducing shafts, gears, teeth and air cavity systems into the tri-color laser projection device, the angle adjustment and stability problems are solved, and dust is cleaned through the air cavity system, and flexible adjustment and stable projection effect are achieved.

CN222255768UActive Publication Date: 2024-12-27ZHANGZHOU SHENGDA ELECTRONIC TECH CO LTD
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Patent Information

Application Number
CN202421149771.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-24
Publication Date
2024-12-27
Estimated Expiration
2034-05-24

AI Technical Summary

Technical Problem

During use, the projection direction of the three-color laser projection device is fixed, making it difficult to adjust the angle according to actual needs, resulting in usage limitations and projection screen shaking or offset, affecting stability.

Method used

A three-color laser projection device including axle rod, gear, jacking teeth, return spring and air cavity system is designed to realize angle adjustment through the limiting mechanism of gear and jacking teeth, and to realize dust through the combination of air cavity and air outlet head Clean up.

Benefits of technology

It realizes flexible adjustment and stability of the projector angle, avoids shaking or offsetting of the projected image, and cleans up dust on the lens, improves projection effect and equipment continuity, and reduces the risk of manual cleaning.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a three-color laser projection device with stable operation, which comprises a projector and a lens fixed on the front side surface of the projector, and the left side and the right side of the projector are arranged in a support frame for supporting the projector through shaft rods; shaft rods are fixed to the two sides of the projector, and the outer ends of the shaft rods are rotationally installed in the side edges of the supporting frame through bearings. A gear is fixed to the outer side face of the shaft rod and arranged in the supporting frame. According to the three-color laser projection device stable in operation, the effect of limiting the angle of the projector is achieved, the angle of the projector can be adjusted according to actual use requirements, the angle can be stabilized conveniently after adjustment, then the phenomenon that the projector shakes or deviates is avoided, the operation stability of the projector is guaranteed, and the use experience of the projector is improved. And dust on the surface of the lens can be blown off, so that the cleaning effect can be achieved, and the dust and the like are prevented from being attached to the lens to influence the projection effect.
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Description

Technical Field

[0001] The utility model relates to the technical field of three-color laser projection, in particular to a three-color laser projection device with stable operation. Background Art

[0002] The three-color laser projection device is mainly composed of red, green and blue light valves, a beam-combining X-prism, a projection lens and a driving light valve. It is mainly used to project images or videos onto a screen, so that the images or videos can be enlarged. For example, in the patent with the announcement number "CN207380430U" and the name "a laser projector", during operation, the laser projector is first installed on a column, and then the projector and the display are connected with a data cable. One end of the data cable is plugged into the input port of the projector, and the other end is plugged into the output port of the display. Turn on the switch of the projector and turn on the screen at the same time, determine the position of the column and the screen, and adjust the height of the column through the telescopic device so that the picture projected by the projector can be displayed on the screen to the maximum extent. Finally, the projector is controlled by operating the display to project the content to be displayed. However, the above structure still has the following problems in actual use:

[0003] During use of the above structure, the projection direction is fixed, which makes it inconvenient for users to adjust the angle of the three-color laser projection device according to actual use requirements, resulting in limitations in its use. At the same time, after adjustment, the angle cannot be guaranteed to be fixed, which causes the projection image to shake or shift, thereby affecting the stability of operation.

[0004] Therefore, we proposed a stable three-color laser projection device that can solve the above problems well. Utility Model Content

[0005] The purpose of the utility model is to provide a three-color laser projection device with stable operation, so as to solve the problem raised by the above-mentioned background technology that it is not convenient to adjust the angle of the three-color laser projection device according to actual use requirements in the current market, which leads to limitations in its use, and at the same time, the angle cannot be fixed after adjustment, which leads to shaking or offset of the projected image, thereby affecting the stability of operation.

[0006] To achieve the above object, the utility model provides the following technical solution: a three-color laser projection device with stable operation, comprising a projector and a lens fixed on the front side thereof, and the left and right sides of the projector are installed in a support frame for supporting the projector through shaft rods;

[0007] It also includes: shafts are fixed on both sides of the projector, and the outer ends of the shafts are rotatably mounted inside the side edges of the support frame through bearings;

[0008] A gear is fixed on the outer side of the shaft, and the gear is arranged inside the support frame, and a latch is meshed at the upper end of the gear, and the latch is fixed at the bottom end of the pull rod;

[0009] The pull rod is elastically slidably connected to the support frame via a return spring, and two ends of the return spring are respectively fixed to the pull rod and the support frame.

[0010] Preferably, the support frame is arranged in a "U"-shaped structure, and a cam located on the side of the gear is fixed to the outer side surface of the right shaft, and the cam is arranged inside the support frame, and the side surface of the cam contacts the pressure rod when it rotates to the lower end.

[0011] Preferably, the pressure rod is elastically slidably connected to the support frame via a tension spring, and both ends of the tension spring are respectively fixed to the pressure plate and the support frame, and the tension spring is sleeved on the outside of the pressure rod.

[0012] Preferably, the lower end of the pressure rod extends into the air cavity and is fixed to the pressure plate, and the air cavity is opened inside the support frame.

[0013] Preferably, a sealing ring is bonded to the outer side surface of the pressure plate, and the sealing ring is in contact with the inner wall of the air cavity.

[0014] Preferably, the air cavity is connected to one end of the connecting hose, and the other end of the connecting hose passes through the supporting frame and is connected to the air outlet head.

[0015] Preferably, the air outlet head is arranged on the front side of the projector, and the output end of the air outlet head faces the front side of the lens, and the air outlet heads are arranged in a row.

[0016] Compared with the prior art, the beneficial effects of the utility model are: the three-color laser projection device with stable operation can not only achieve the effect of limiting the angle of the projector, but also can adjust the angle of the projector according to actual use requirements, and after adjustment, it is easy to stabilize the angle, thereby avoiding the shaking or deviation of the projector, ensuring its operation stability, and can blow off the dust on the surface of the lens, so as to achieve the effect of cleaning, avoiding dust and the like adhering to the lens and affecting the projection effect. The specific contents are as follows:

[0017] (1) The elastic force of the reset spring can drive the pull rod to reset, and then the pull rod drives the latching teeth to reset together, and then the latching teeth and the gears are engaged, so as to limit the position of the gears, thereby achieving the effect of limiting the angle of the projector. Not only can the angle of the projector be adjusted according to actual use requirements, but also the angle can be stabilized after adjustment, thereby avoiding shaking or deviation of the projector and ensuring its operation stability;

[0018] Furthermore, when the angle of the projector needs to be adjusted, the pull rod only needs to be pulled upward, so that the pull rod drives the latching teeth to slide upward, so that the latching teeth are separated from the gear, thereby releasing the limit on the gear, and then the projector can be rotated and adjusted by the shaft rod;

[0019] (2) When the shaft rotates, it also drives the cam to rotate, thereby squeezing the pressure rod, which causes the pressure rod to slide downward and drives the pressure plate to slide downward in the air cavity, thereby squeezing the air in the air cavity to be transported to the connecting hose, and then the air can be ejected through the air outlet head to blow off the dust on the surface of the lens, thereby achieving a cleaning effect and preventing dust from adhering to the lens and affecting the projection effect;

[0020] When the cam rotates to the point where it is no longer in contact with the pressure rod, the elastic force of the tension spring can drive the pressure rod and the pressure plate to reset, and the pressure rod and the pressure plate are reset, so that the pressure plate no longer compresses the air in the air cavity;

[0021] When the pressure plate no longer compresses the air in the air cavity, the air in the air cavity can be refilled for the next use, thereby ensuring the continuity of its use, saving manual cleaning, and avoiding damage to the lens during manual wiping. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0024] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0025] Figure 4 This is a schematic diagram of the side view structure of the connection between the gear and the latch teeth of the utility model;

[0026] Figure 5 For this utility model Figure 2 The enlarged structural diagram at B in the middle;

[0027] Figure 6 This is a side view of the structure of the connection between the cam and the shaft rod of the utility model.

[0028] In the figure: 1. projector; 2. lens; 3. shaft; 4. support frame; 5. gear; 6. pull rod; 7. latch tooth; 8. return spring; 9. cam; 10. pressure rod; 11. pressure plate; 12. tension spring; 13. air cavity; 14. connecting hose; 15. air outlet. DETAILED DESCRIPTION

[0029] 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.

[0030] See also Figure 1-Figure 6 , the utility model provides the following technical solutions:

[0031] Embodiment 1: In order to solve the problem in the prior art that it is inconvenient to adjust the angle of the three-color laser projection device according to actual use requirements, which leads to limitations in its use, and the angle cannot be fixed after adjustment, which leads to shaking or offset of the projected image, thereby affecting the stability of operation, the following scheme is disclosed, including a projector 1 and a lens 2 fixed on its front side, and the left and right sides of the projector 1 are installed in a support frame 4 for supporting the projector 1 through a shaft 3; it also includes: shafts 3 are fixed on both sides of the projector 1, and the outer ends of the shafts 3 are rotatably installed inside the side of the support frame 4 through bearings; a gear 5 is fixed on the outer side of the shaft 3, and the gear 5 is arranged inside the support frame 4, and the upper end of the gear 5 is meshed with a latch 7, and the latch 7 is fixed to the bottom end of the pull rod 6; the pull rod 6 is elastically slidably connected to the support frame 4 through a reset spring 8, and the two ends of the reset spring 8 are respectively fixed to the pull rod 6 and the support frame 4;

[0032] When the angle of the projector 1 needs to be adjusted, it is only necessary to pull the pull rod 6 upward, so that the pull rod 6 drives the latching tooth 7 to slide upward, so that the latching tooth 7 is separated from the gear 5, and the limit of the gear 5 is released. Then the projector 1 can be rotated and adjusted by the shaft rod 3. When it is adjusted to a certain angle, it is only necessary to loosen the pull rod 6. At this time, the elastic force of the reset spring 8 can drive the pull rod 6 to reset, so that the pull rod 6 drives the latching tooth 7 to reset together, so that the latching tooth 7 is engaged with the gear 5, thereby limiting the position of the gear 5, so that the gear 5 cannot rotate. By fixing the gear 5 and the shaft rod 3, the shaft rod 3 cannot rotate, thereby achieving the effect of limiting the angle of the projector 1. Not only can the angle of the projector 1 be adjusted according to actual use requirements, but also the angle is easy to stabilize after adjustment, thereby avoiding the shaking or deviation of the projector 1 and ensuring its operation stability.

[0033] Embodiment 2: Different from Embodiment 1, this embodiment can achieve the cleaning effect, avoiding dust and the like from adhering to the lens 2 and affecting the projection effect. For details, refer to Figure 1-Figure 3 and Figure 6The support frame 4 is arranged in a "U"-shaped structure, and a cam 9 located on the side of the gear 5 is fixed on the outer side of the right shaft rod 3, and the cam 9 is arranged inside the support frame 4, and the side surface of the cam 9 contacts the pressure rod 10 when it rotates to the lower end, and a sealing ring is bonded to the outer side of the pressure plate 11, and the sealing ring is fitted with the inner wall of the air cavity 13, the air cavity 13 is connected with one end of the connecting hose 14, and the other end of the connecting hose 14 passes through the support frame 4 and is connected with the air outlet head 15, the air outlet head 15 is arranged on the front side of the projector 1, and the output end of the air outlet head 15 faces the front side of the lens 2, and the air outlet head 15 is provided with a row;

[0034] At the same time, when the shaft rod 3 rotates, it will also drive the cam 9 to rotate together. Through the rotation of the cam 9, it is rotated to the pressure rod 10, and then the pressure rod 10 is squeezed. Through the squeezing of the pressure rod 10, the pressure rod 10 is forced to slide downward. Through the fixation between the pressure rod 10 and the pressure plate 11, the pressure rod 10 drives the pressure plate 11 to slide downward in the air cavity 13, so that the air in the air cavity 13 is squeezed and transported to the connecting hose 14. Through the connection between the other end of the connecting hose 14 and the air outlet head 15, the air can be ejected through the air outlet head 15, and the dust on the surface of the lens 2 is blown off, so as to achieve the effect of cleaning and avoid dust and the like adhering to the lens 2 and affecting the projection effect;

[0035] Embodiment 3: Different from Embodiment 2, this embodiment facilitates the reset of the pressure rod 10 and the pressure plate 11. Figure 2-Figure 3 The pressure rod 10 is elastically slidably connected to the support frame 4 through a tension spring 12, and the two ends of the tension spring 12 are respectively fixed to the pressure plate 11 and the support frame 4, and the tension spring 12 is sleeved on the outside of the pressure rod 10, and the lower end of the pressure rod 10 extends into the air cavity 13 and is fixed to the pressure plate 11, and the air cavity 13 is opened inside the support frame 4;

[0036] When the cam 9 rotates to the point where it is no longer in contact with the pressure rod 10, the elastic force of the tension spring 12 can drive the pressure rod 10 and the pressure plate 11 to reset. By resetting the pressure rod 10 and the pressure plate 11, the pressure plate 11 no longer compresses the air in the air cavity 13, so that the air in the air cavity 13 can be refilled for the next use, thereby ensuring the continuity of its use, saving manual cleaning, and avoiding damage to the lens 2 during manual wiping.

[0037] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A three-color laser projection device with stable operation, comprising a projector (1) and a lens (2) fixed on the front side thereof, wherein the left and right sides of the projector (1) are mounted in a support frame (4) for supporting the projector (1) via shafts (3); It is characterized in that Also includes: A shaft (3) is fixed on both sides of the projector (1), and the outer end of the shaft (3) is rotatably mounted inside the side of the support frame (4) through a bearing; A gear (5) is fixed on the outer side of the shaft (3), and the gear (5) is arranged inside the support frame (4), and a latch (7) is meshed at the upper end of the gear (5), and the latch (7) is fixed to the bottom end of the pull rod (6); The pull rod (6) is elastically slidably connected to the support frame (4) via a return spring (8), and the two ends of the return spring (8) are respectively fixed to the pull rod (6) and the support frame (4).

2. A three-color laser projection device with stable operation according to claim 1, characterized in that: The support frame (4) is arranged in a "U"-shaped structure, and a cam (9) located on the side of the gear (5) is fixed to the outer side surface of the right shaft rod (3), and the cam (9) is arranged inside the support frame (4), and the side surface of the cam (9) contacts the pressure rod (10) when it rotates to the lower end.

3. A three-color laser projection device with stable operation according to claim 2, characterized in that: The pressure rod (10) is elastically slidably connected to the support frame (4) via a tension spring (12), and the two ends of the tension spring (12) are respectively fixed to the pressure plate (11) and the support frame (4), and the tension spring (12) is sleeved on the outside of the pressure rod (10).

4. The stable three-color laser projection device according to claim 2, characterized in that: The lower end of the pressure rod (10) extends into the air cavity (13) and is fixed to the pressure plate (11), and the air cavity (13) is opened inside the support frame (4).

5. A three-color laser projection device with stable operation according to claim 4, characterized in that: A sealing ring is bonded to the outer side surface of the pressure plate (11), and the sealing ring is in contact with the inner wall of the air cavity (13).

6. A three-color laser projection device with stable operation according to claim 4, characterized in that: The air cavity (13) is connected to one end of a connecting hose (14), and the other end of the connecting hose (14) passes through the support frame (4) and is connected to an air outlet head (15).

7. A three-color laser projection device with stable operation according to claim 6, characterized in that: The air outlet head (15) is arranged on the front side of the projector (1), and the output end of the air outlet head (15) faces the front side of the lens (2), and the air outlet heads (15) are arranged in a row.