TWI693112B - Large screen dust removal device and method - Google Patents

Abstract

A large screen dust removal device comprising a screen unit, a vibrating unit, and an airflow unit. The screen unit includes a large screen with at least one dust attached to the screen. The vibration unit includes a vibration generating means for vibrating the large screen so that the dust is detached from the large screen. The airflow unit includes an airflow generating means for generating an air flow on the large screen to bring the dust away from the large screen.

Description

Large screen dust removal device and method

The invention relates to a dust removal device, especially a large screen dust removal device, and a method thereof.

The screen is an indispensable part of the projection device. The higher quality screen can clearly show the light projected by the projector to the eyes of the audience. When the screen is exposed to dust, the brightness and contrast will decrease, and even bright and dark stripes will appear. Therefore, the screen must be cleaned frequently to present a better projection picture.

Technology is changing with each passing day, projection technology is getting better and better, and the screens that can be projected are getting bigger and bigger, and they can even be projected on large screens with curved surfaces. Generally speaking, large screens use multiple small-sized hard plastic plates or hard metal plates The fixed position of the support frame is combined into a large screen, even a large curved screen. As the size of the screen increases, the difficulty of cleaning the screen increases.

For example, the cleaning of large screens must use aerial work vehicles, or set up scaffolding, and use dry or wet technology to clean the screen. Not only must the business stop, if the screen is curved, some screen areas cannot be touched , Causing the dilemma of being unable to clean.

Referring to FIG. 1, it is US Patent No. US 7666262 B2, a method for cleaning a large screen, suitable for cleaning a large screen A, using a cleaning head B, a cable D, a pulley C, an upper mounting bracket M, and a Winch E.

Controlling the winch E can control the vertical position of the cleaning head B, and controlling the upper mounting bracket M can control the horizontal position of the cleaning head B, so that the cleaning head B cleans the surface of the large screen A.

Although the conventional technology reveals the technology for cleaning large screens, in actual use, it still has the following disadvantages:

1. Unable to watch:

It is a common practice to use a cleaning head to clean a large screen, which will block the light of the projection when it is cleaned, and it is impossible to clean the screen and project the picture at the same time.

2. Cannot use curved screen:

It is common practice to use a cable to adjust the cleaning head to a high place to clean a flat screen. When the screen is curved or even spherical, you cannot use conventional techniques to clean the screen.

Therefore, how to clean a large curved surface screen and simultaneously project the screen during cleaning is a goal that the related technical personnel urgently need to work hard for.

In view of this, an object of the present invention is to provide a large screen dust removal device, which includes a screen unit, a vibration unit, and an airflow unit.

The screen unit includes a large screen with at least one dust attached.

The vibration unit includes a vibration generating device for vibrating the large screen so that the dust shakes away from the large screen.

The airflow unit includes an airflow generating device that generates airflow on the large screen to take the dust away from the large screen.

Another technical means of the present invention is that the above-mentioned large-screen dust removing device further includes a static elimination unit, which includes a static elimination device for eliminating the static electricity of the dust.

Another technical means of the present invention is that the above-mentioned vibration generating device has a percussion member for vibrating the large screen.

Another technical means of the present invention is that the above-mentioned vibration generating device has a sound wave generating member for generating vibration of the large screen.

Another technical means of the present invention is that the shape of the above-mentioned large screen is one of a flat shape, a curved shape, a hemispherical shape, and a spherical shape.

Another technical means of the present invention is that the above-mentioned airflow generating device is an air extraction device for sucking air on the large screen to generate airflow on the large screen.

Another technical means of the present invention is that the above screen unit further includes a negative pressure space connected to the large screen, the large screen is provided with a plurality of holes, and the airflow generating device is an exhaust device for sucking the negative Pressing the air in the space causes airflow in the multiple holes of the large screen.

Another technical means of the present invention is that the above screen unit further includes a supporting member connected to the large screen, the vibration generating device is disposed on the supporting member, and strikes the supporting member, and the supporting member will strike The power of the large screen is transmitted to the large screen shock.

Another object of the present invention is to provide a dust removal method for a large screen, which includes a vibration step and a take-away step.

First, the vibration step is performed, at least one dust is attached to a large screen, and a vibration generating device vibrates the large screen so that the dust shakes away from the large screen.

Finally, the take away step is performed, and an air flow generating device generates air flow on the large screen to take away the dust that shakes off the large screen.

Another technical means of the present invention is that the above-mentioned large screen dust removing method further includes a static elimination step before the vibration step, using a static elimination device to emit neutralizing ions to the large screen to eliminate the adhesion to the large screen Static electricity from screen dust.

The beneficial effect of the present invention is to first use the static elimination device to neutralize the static electricity of the dust attached to the large screen to reduce the force of the dust attached to the large screen. The vibration generating device applies energy to the large screen so that The large screen vibrates, causing the dust to vibrate away from the large screen, and the airflow generating device is used to generate airflow on the surface of the large screen to remove the dust leaving the large screen.

A‧‧‧Dust

3‧‧‧ screen unit

31‧‧‧Large screen

311‧‧‧hole

32‧‧‧Negative pressure space

4‧‧‧Vibration unit

41‧‧‧Vibration generator

5‧‧‧Air flow unit

51‧‧‧Airflow generator

6‧‧‧Static Elimination Unit

61‧‧‧Static Elimination Device

901~903‧‧‧Step

1 is a schematic diagram of a device illustrating US Patent No. US 7666262 B2, a method for cleaning a large screen; FIG. 2 is a schematic diagram of a device illustrating a side cross-sectional view of a first preferred embodiment of a large screen dust removal device of the present invention kind; 3 is a schematic diagram of the device illustrating the top cross-sectional aspect of the first preferred embodiment; FIG. 4 is a schematic diagram of the device illustrating the side cross-sectional aspect of a second preferred embodiment of the large screen dust removal device of the present invention; 5 is a schematic diagram of a device illustrating a third preferred embodiment of a large screen dust removal device of the present invention in a side cross-sectional view; FIG. 6 is a schematic diagram of a device illustrating a fourth preferred embodiment of a large screen dust removal device of the present invention An example of a side view in cross-section; and FIG. 7 is a block diagram illustrating a method for removing dust from a large screen of the present invention.

Relevant patent application features and technical contents of the present invention will be clearly presented in the following detailed description with reference to the four preferred embodiments of the drawings. Before making a detailed description, it should be noted that similar elements are represented by the same number.

Referring to FIGS. 2 and 3, it is a first preferred embodiment of a large screen dust removal device of the present invention, which includes a screen unit 3, a vibration unit 4, an air flow unit 5, and a static elimination unit 6.

The screen unit 3 includes a large screen 31. In the first preferred embodiment, the large screen 31 has a curved shape with a height and width of about 20 meters. The projector projects light into the large screen 31 Surface. The large screen 31 is provided with somatosensory seats at different heights beside the inner curved surface, which can simulate various viewing angles, and further provide the simulation effects of the audience's visual, auditory, and physical sensations.

Among them, the material of the large screen 31 is hard plastic or gold It is a material, and is designed as a plurality of plastic plates or metal plates of different sizes, and then a supporting member (not shown in the figure) is used to fix the position of the plurality of plastic plates or metal plates, and to combine the plurality of plastic plates or metal plates成This large screen 31 with a curved surface.

Preferably, the supporting member is a combined steel frame or aluminum frame to support the plural plastic plates or metal plates in the air and connect the supporting member with the large screen 31, because the steel frame or aluminum The combination of the frame into a special building structure has been known to the industry, and it is widely used in building technology, which is not the focus of this case and will not be described in detail here.

Generally, there will be dust A floating in the air. Even in the room, the air will still be filled with a little dust A, so that at least one dust A will be attached to the large screen 31. When the amount of attached dust A increases, it will affect the projection. Screen, so the large screen 31 used for projection needs regular dust removal and cleaning operations.

The large screen 31 has a large size and is designed to be curved. It cannot be manually cleaned by the scaffold. The large screen 31 installed indoors is also a very difficult project to clean with a ladder truck. There are even some areas that are not clean due to inaccessibility, which affects the presentation of the projected image.

The vibration unit 4 includes a vibration generating device 41 for vibrating the large screen 31 to cause the large screen 31 to vibrate, so that the dust A vibrates away from the large screen 31. Preferably, the vibration generating device 41 is a pneumatic or electric striking member, and is provided on the supporting member, and then striking the supporting member, the supporting member transmits the striking force to the large The screen 31 causes the large screen 31 to vibrate.

The supporting member composed of a combined steel frame or aluminum frame is usually combined with screws, so it can transmit shock waves. In addition, the large screen 31 is a hard plastic material or a hard metal material, which can receive shock waves and generate vibrations. If the large screen 31 vibrates, there is a chance that the dust A will vibrate away. In actual implementation, the large screen 31 may be a cloth material, and the vibration generating device 41 directly strikes the large screen 31 to detach the dust A attached to the large screen 31, which should not be limited to this.

The airflow unit 5 includes an airflow generating device 51 that generates airflow on the large screen 31 to take the dust A away from the large screen 31. Preferably, the airflow generating device 51 is an air extraction device, which is used to suck the air on the large screen 31 to generate airflow on the large screen 31.

In the first preferred embodiment, the space behind the large screen 31 is closed by a building or compartment to define a negative pressure space 32, and a suction seal is provided around the large screen 31, the air flow is generated The device 51 sucks the air in the negative pressure space 32, so that the suction seal draws the air around the large screen 31, so that the inner curved surface of the large screen 31 will generate airflow. In actual implementation, the suction seal and the airflow generating device 51 can be directly connected by an exhaust pipe to directly suck the air around the large screen 31 without surrounding the negative pressure space 32 and should not be limited to this.

The static elimination unit 6 includes a static elimination device 61 for eliminating the static electricity of the dust A. In the first preferred embodiment, the static elimination device 61 is disposed above the large screen 31 and emits positive/negative ions to the inner curved surface of the large screen 31 to eliminate the large screen 31 Static electricity on dust A. In actual implementation, a plurality of static electricity eliminating devices 61 may be provided, and the directions of the positive/negative ions emitted by the motors are respectively controlled to eliminate the static electricity of the dust A on the large screen 31.

The inventor needs to emphasize that the large screen 31 is installed indoors, and the air conditioner is usually turned on to make the audience feel comfortable. Therefore, the air in the room is relatively dry, and it is easy for the dust A and the large screen 31 to accumulate static electricity and attract each other, causing vibration. Force cannot shake the dust A away from the large screen 31.

When the dust A attached to the large screen 31 is eliminated from static electricity, the dust A and the large screen 31 have no electrostatic attraction. The vibration generating device 41 causes the large screen 31 to vibrate, which can shake off the dust A. And it is carried away by the airflow generated by the airflow generating device 51 to achieve the effect of removing dust from the large screen 31. In actual implementation, it is not necessary to provide the static elimination device 61, the vibration generating device 41 and the air flow generating device 51 are only used to take away the dust A, and should not be limited to this.

Referring to FIG. 4, it is a second preferred embodiment of a large screen dust removal device of the present invention. The second preferred embodiment is substantially the same as the first preferred embodiment, and the similarities are not described in detail here. The difference is that the shape of the large screen 31 is planar, and the large screen 31 is provided with a plurality of holes 311.

The negative pressure space 32 of the screen unit 3 is connected to the large screen 31 so that the negative pressure space 32 is connected to the plurality of holes 311, and the airflow generating device 51 is an exhaust device for sucking the negative pressure space The air of 32 generates airflow in the plurality of holes 311 of the large screen 31.

Preferably, the diameter of the plurality of holes 311 is 1 mm, and the plurality of holes 311 are spaced apart from each other by 1 cm, so that the plurality of holes 311 are dispersedly arranged on the large screen 31. In actual implementation, the diameter and spacing distance of the plurality of holes 311 , Should be set according to actual use, and should not be limited to this.

The aperture of the plurality of holes 311 is not large, so the viewer will not notice the existence of the plurality of holes 311 when viewing the projected image from a distance. The plurality of holes 311 can adjust the pressure difference between the inside and outside of the large screen 31 to avoid excessive pressure difference The destruction of this large screen 31 is caused. In addition, the plurality of holes 311 can conduct sound, so that the audio equipment can be arranged behind the large screen 31, so that the audience will not see the audio equipment, and has a beautiful effect.

The vibration generating device 41 is a sound wave generating member that generates sound waves to the air to cause the large screen 31 to vibrate. Preferably, the vibration generating device 41 is an audio device of a projection device, which causes the large screen 31 to vibrate through the air.

When the large screen 31 vibrates, it will shake off the dust A attached to the large screen 31. The dust A will be driven by the airflow, enter the negative pressure space 32 through the plurality of holes 311, and be discharged to reach the large screen 31 The effect of dust removal.

Referring to FIG. 5, it is a third preferred embodiment of a large screen dust removal device of the present invention. The third preferred embodiment is substantially the same as the second preferred embodiment, and the similarities are not described in detail here. The difference is that the shape of the large screen 31 is hemispherical.

The large screen 31 of the three preferred embodiments is a projection celestial body Celestial dome screen, the large screen 31 is placed on the indoor ceiling by using the supporting member, the large screen 31 and the ceiling surround the negative pressure space 32, and the airflow generating device 51 draws air from the negative pressure space 32 , So that a plurality of holes 311 on the large screen 31 generate airflow.

When the vibration generating device 41 vibrates the large screen 31 and cooperates with the static elimination device 61 to eliminate static electricity on the large screen 31 and the dust A attached to the large screen 31, the dust A attached to the large screen 31 is Shock away, the dust A will be driven by the airflow, pass through the plurality of holes 311 to the negative pressure space 32 and be taken away.

Referring to FIG. 6, it is a fourth preferred embodiment of a large screen dust removal device of the present invention. The fourth preferred embodiment is substantially the same as the third preferred embodiment, and the similarities are not described in detail here. The difference is that the shape of the large screen 31 is spherical.

The large screen 31 forms a spherical shape on a base. The base can be installed on the ground or on the ceiling. The large screen 31 and the base define the negative pressure space 32 around the base. Projection, so that the audience can watch the sphere picture.

The vibration generating device 41 is an audio device, which is installed in the negative pressure space 32, and can vibrate the large screen 31 when playing sound, and the static elimination device 61 can be provided outside the large screen 31 to make the dust A It is easier to be shaken off the large screen 31, and the airflow generating device 51 sucks the air in the negative pressure space 32, so that the dust A is driven by the airflow, enters the negative pressure space 32 through the plurality of holes 311, and is discharged outward.

Referring to FIG. 7, it is a method for removing dust from a large screen according to the present invention, including a static elimination step 901, a vibration step 902, and a stripping step 903.

Firstly, the static elimination step 901 is performed, and the static elimination device 61 emits neutralization ions to the large screen 31 to eliminate the static electricity of the large screen 31 and the dust A attached to the large screen 31. Perform the static elimination step 901, directly perform the vibration step 902, and the take-away step 903.

Then, the vibration step 902 is executed, and the vibration generating device 41 causes the large screen 31 to vibrate, so that the dust A vibrates away from the large screen 31.

Among them, the vibration generating device 41 can vibrate the large screen 31 by tapping, and can also vibrate the large screen 31 by using sound waves to vibrate the dust A away from the large screen 31. , You can use tapping and sound waves at the same time to make the large screen 31 vibrate.

Finally, the take-off step 903 is executed, and the airflow generating device 51 generates an airflow on the large screen 31 to take away the dust A that shakes off the large screen 31.

Wherein, the airflow generating device 51 generates airflow on the large screen 31 by sucking air. In actual implementation, air can also be blown to the large screen 31 by using the blowing method to make the large screen 31 The air flow should not be limited to this.

It is worth mentioning that the vibration generating device 41, the airflow generating device 51, and the static elimination device 61 will not affect the projection screen of the projection device, and can perform the dust removal operation of the large screen 31 while playing the movie. There is no need to stop playing movies to build scaffolding or use ladder equipment to clean the screen, which effectively improves the running time of projection equipment and saves cleaning costs.

As can be seen from the above description, the large-screen dust removal device and method of the present invention do have the following effects:

1. Remove dust:

The static elimination device 61 can eliminate the static electricity of the large screen 31 and the dust A attached to the large screen 31, the vibration generating device 41 can cause the large screen 31 to vibrate, and the airflow generating device 51 can cause the large screen 31 to An air flow is generated to take away the dust A that has been shaken off, effectively removing the dust A of the large screen 31.

2. Simultaneous projection and dust removal:

The vibration generating device 41, the airflow generating device 51, and the static elimination device 61 will not affect the projection screen of the projection device, and can perform the dust removal operation of the large screen 31 while playing the movie.

3. Can clean any shape screen:

The vibration generating device 41 can indirectly or directly vibrate the large screen 31, the airflow generating device 51 sucks air to generate airflow, and the static electricity eliminating device 61 can eliminate static electricity at a distance, suitable for flat, curved, and hemispherical states The large screen 31 with a spherical or spherical shape is not affected by the shape of the large screen 31.

In summary, the present invention uses the static elimination device 61 to eliminate the static electricity of the large screen 31 and the dust A attached to the large screen 31, the vibration generating device 41 to vibrate the large screen 31, and the airflow generating device 51 takes away the dust A that has been shaken off, effectively removing the dust A of the large screen 31, so the purpose of the invention can indeed be achieved.

However, the above are only the four preferred embodiments of the present invention, which should not be used to limit the scope of the implementation of the present invention, that is, the simple equivalent changes made by the patent scope of the present invention and the description of the invention Modifications are still covered by the patent of the present invention.

A: Dust

3: screen unit

31: Large screen

32: Negative pressure space

4: Vibration unit

41: Vibration generating device

5: Airflow unit

51: Airflow generating device

6: Static elimination unit

61: Static elimination device

Claims (9)

A large screen dust removal device includes: a screen unit, including a large screen, at least one dust is attached to the large screen; a vibration unit, including a vibration generating device for shaking the large screen, so that the dust shakes off the large screen , The vibration generating device is a sound wave generating member that generates sound waves to the air to vibrate the large screen; and an air flow unit including an air flow generating device for generating air flow on the large screen to take the dust away from the large screen screen. The large screen dust removal device according to item 1 of the scope of the patent application further includes a static elimination unit, which includes a static elimination device for eliminating the static electricity of the dust. According to the large screen dust removal device described in item 1 of the patent application scope, wherein the vibration generating device is a striking member that strikes the large screen to generate vibration. According to the large screen dust removal device described in item 1 of the patent application scope, the shape of the large screen is one of a flat shape, a curved shape, a hemispherical shape, and a spherical shape. According to the large screen dust removal device described in item 1 of the patent application scope, wherein the airflow generating device is an exhaust device for sucking the air on the large screen to generate airflow on the large screen. The large screen dust removal device according to item 1 of the patent application scope, wherein the screen unit further includes a negative pressure air space connected to the large screen At the time, the large screen is provided with a plurality of holes, and the airflow generating device is an exhaust device for sucking the air in the negative pressure space, so that the plurality of holes of the large screen generate airflow. According to the large screen dust removal device described in item 1 of the patent application scope, wherein the screen unit further includes a supporting member connected to the large screen, the vibration generating device is disposed on the supporting member and strikes the supporting member, The supporting member transmits the striking force to the large screen to cause the large screen to vibrate. A dust removing method for a large screen includes the following steps: a vibration step, at least one dust is attached to a large screen, and a vibration generating device vibrates the large screen to vibrate the dust away from the large screen, wherein the vibration generating device It is a sound wave generating member that generates sound waves to the air to vibrate the large screen; and a take-off step, an air flow generating device generates air flow on the large screen to take away the dust that vibrates away from the large screen. According to the large screen dust removal method described in item 8 of the patent application scope, a static elimination step is further included before the vibration step, and a static elimination device emits neutralizing ions to the large screen to eliminate dust attached to the large screen Static electricity.

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