TW201910016A - 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 cleaning device and method  

The present invention relates to a dust removing device, and more particularly to a large screen dust removing device, and a method therefor.

The screen is an integral part of the projection device, and the higher quality screen can clearly present the light projected by the projector to the viewer's eyes. When the screen is exposed to dust, the brightness and contrast will drop and even bright and dark stripes will appear. Therefore, the screen must be cleaned up from time to time to present a better projection picture.

With the ever-changing technology, the projection technology is getting better and better, the screen that can be projected is getting bigger and bigger, and even the large screen can be projected on the curved surface. Generally speaking, the large screen will use a plurality of small-sized rigid plastic sheets or hard metal sheets. Fix the position with the support frame, combine it into a large screen, even a large curved screen. When the size of the screen is larger, the difficulty of cleaning the screen will increase.

For example, the cleaning of a large screen must use an aerial work vehicle or a scaffolding method to clean the screen with dry or wet technology. It must not only be closed, but if the screen is curved, some screen areas cannot be touched. , creating an environment that cannot be cleaned.

Referring to Fig. 1, there is a method for cleaning a large screen, which is 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 method. Winch E.

The winch E is controlled to control the vertical position of the cleaning head B, and the upper mounting bracket M is controlled to control the horizontal position of the cleaning head B so that the cleaning head B cleans the surface of the large screen A.

Although conventional techniques have been used to reveal techniques for cleaning large screens, in practice, they still have the following disadvantages:

First, can not watch:

It is conventional to use a cleaning head to clean a large screen that will block the projected light when it is cleaned, and cannot clean the screen while projecting the picture.

Second, the surface screen cannot be used:

It is conventional to use a cable to lift the cleaning head to a high position to clean the flat screen. When the screen is curved or even spherical, the screen cannot be cleaned using conventional techniques.

Therefore, how to clean a large curved surface and project a picture while cleaning is an urgent need of the technicians.

In view of the above, it is an object of the present invention to provide a large screen dust removing device comprising a screen unit, a vibration unit, and an air flow unit.

The screen unit includes a large screen to which at least one dust is attached.

The vibration unit includes a vibration generating device for vibrating the large screen to vibrate the large screen.

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

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

Another technical means of the present invention is that the vibration generating device described above has a striking member for causing the large screen to vibrate.

Still another technical means of the present invention is that the vibration generating device described above has a sound wave generating member for causing the large screen to vibrate.

Another technical means of the present invention is that the shape of the large screen described above is one of a planar state, a curved surface state, a hemispherical surface state, and a spherical surface state.

Another technical means of the present invention is that the airflow generating device is a ventilation device for sucking air on the large screen to generate airflow on the large screen.

According to still another aspect of the present invention, the screen unit further includes a negative pressure space connected to the large screen, wherein the large screen is provided with a plurality of holes, and the airflow generating device is a suction device for sucking the negative The air in the compressed space causes airflow in the plurality of holes of the large screen.

Another technical means of the present invention is that the screen unit further includes a supporting member connected to the large screen, the vibration generating device is disposed on the supporting member, and tapping the supporting member, the supporting member will be struck The power is transmitted to the large screen to cause the large screen to vibrate.

Another object of the present invention is to provide a large screen dust removal method comprising a shaking step and a take-off step.

First, the shaking step is performed, at least one dust is attached to a large screen, and a vibration generating device causes the large screen to vibrate to cause the dust to shake off the large screen.

Finally, the take-off step is performed, and an airflow generating device generates an airflow on the large screen to take off the dust that is off the large screen.

Another technical means of the present invention lies in the above-mentioned large screen dust removing method, which further comprises a static eliminating step before the shaking step, using a static eliminating device to emit neutralizing ions to the large screen for eliminating adhesion to the large Static electricity from the dust of the screen.

The beneficial effect of the present invention is to first use the static electricity in the static elimination device and the dust attached to the large screen to reduce the force of the dust adhering to the large screen, and the vibration generating device applies energy to the large screen, so that The large screen generates vibrations that cause the dust to shake off the large screen and utilize the airflow generating device to create an air flow on the large screen surface to carry away dust from the large screen.

A‧‧‧dust

3‧‧‧Screen unit

31‧‧‧ Large screen

311‧‧‧ hole

32‧‧‧negative space

4‧‧‧Vibration unit

41‧‧‧Vibration generating device

5‧‧‧Airflow unit

51‧‧‧Airflow generating device

6‧‧‧Static elimination unit

61‧‧‧Static elimination device

901~903‧‧‧Steps

1 is a schematic view of a device illustrating a method of cleaning a large screen according to US Pat. No. 7,666,262 B2; and FIG. 2 is a schematic view showing a side view of a first preferred embodiment of the large screen cleaning device of the present invention. FIG. 3 is a schematic view showing a plan view of the first preferred embodiment; FIG. 4 is a schematic view showing a side view of a second preferred embodiment of the large screen cleaning device of the present invention. Figure 5 is a schematic view of a device showing a side view of a third preferred embodiment of the large screen cleaning device of the present invention; Figure 6 is a schematic view of a device showing a fourth aspect of the large screen cleaning device of the present invention. A side view of a preferred embodiment; and Figure 7 is a block diagram illustrating the method of cleaning a large screen of the present invention.

The details of the related patents and the technical contents of the present invention will be clearly shown in the following detailed description of the four preferred embodiments with reference to the drawings. It should be noted that before the detailed description, similar elements are denoted by the same reference numerals.

Referring to Figures 2 and 3, a first preferred embodiment of a large screen cleaning device of the present invention comprises 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 surface shape and a height and a width of about 20 meters. The projector projects light into the large screen 31. Surface. A somatosensory seat is disposed at different heights beside the curved surface of the large screen 31, which can simulate various viewing angles, and further provides a simulation effect of the viewer's vision, hearing, and body feeling.

The material of the large screen 31 is made of hard plastic or metal material, and is designed into a plurality of plastic sheets or metal sheets of different sizes, and then the position of the plurality of plastic sheets or metal sheets is supported by a supporting member (not shown). Fixing and combining the plurality of plastic sheets or metal sheets into the large screen 31 having a curved surface.

Preferably, the supporting member is a combined steel frame or aluminum frame to support the plurality of plastic sheets or metal sheets in the air, and the supporting member is connected with the large screen 31, because of the steel frame or aluminum The combination of frames into special building structures has been known to the industry and is widely used in construction technology. It is also the focus of this case and will not be described in detail here.

Generally, dust A will float in the air. Even if it is indoors, the air will be filled with a little dust A, so that at least one dust A will adhere to the large screen 31. When the amount of attached dust A rises, it will affect the projection. The screen, so the large screen 31 for projection needs to be regularly cleaned and dusted.

The large screen 31 is large in size and designed to be curved, and cannot be manually cleaned by means of a scaffolding. It is also a very difficult project to use a ladder truck to clean the large screen 31 installed in the room. There are even some areas that are inaccessible and cause some areas to be clean and not clean, which in turn affects the presentation of the projected picture.

The vibration unit 4 includes a vibration generating device 41 for vibrating the large screen 31 to cause the large screen 31 to vibrate, causing the dust A to be shaken away from the large screen 31. Preferably, the vibration generating device 41 is a pneumatic or electric striking member, and is disposed on the supporting member, and then tapping the supporting member, the supporting member transmits the tapping force to the large screen 31, so that This large screen 31 generates vibration.

The support member composed of the combined steel frame or the aluminum frame is usually combined by screws, so that the seismic wave can be transmitted, and the large screen 31 is made of a hard plastic material or a hard metal material, and can receive the shock wave and generate vibration. The large screen 31 generates vibration and there is a chance to shake the dust A away. In actual implementation, the large screen 31 may be a cloth material, and the vibration generating device 41 directly taps the large screen 31 to disengage the dust A attached to the large screen 31, and is not limited thereto.

The air flow unit 5 includes an air flow generating device 51 that generates an air flow on the large screen 31 to carry the dust A away from the large screen 31. Preferably, the airflow generating device 51 is a drafting device for sucking air on the large screen 31 to generate an airflow on the large screen 31.

In the first preferred embodiment, the space behind the large screen 31 is closed by a building or a compartment to define a negative pressure space 32, and a sealing opening is arranged around the large screen 31, and the airflow is generated. The device 51 sucks the air of the negative pressure space 32 so that the extraction opening extracts the air around the large screen 31, so that the curved surface inside the large screen 31 will generate an air flow. In actual implementation, the air-sealing device and the airflow generating device 51 can be directly connected by the air exhaust pipe to directly suck the air around the large-screen screen 31 without surrounding the negative pressure space 32, and should not be limited thereto.

The static elimination unit 6 includes a static elimination device 61 for eliminating 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 static electricity of the dust A on the large screen 31. In actual implementation, a plurality of static electricity eliminating devices 61 may be provided, and the orientation of the positive/negative ions is respectively controlled by the motor to eliminate the static electricity of the dust A on the large screen 31.

The inventor should 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 the dust A and the large screen 31 are easily accumulated and attracted to each other, causing vibration. The force cannot shake the dust A away from the large screen 31.

When the dust A attached to the large screen 31 is de-energized, the dust A and the large screen 31 have no electrostatic attraction, and the vibration generating device 41 causes the large screen 31 to vibrate, and the dust A can be shaken off. And the airflow generated by the airflow generating device 51 is carried away to achieve the effect of dust removal of the large screen 31. In actual implementation, the static electricity eliminating device 61 may not be provided, and the dust generating device 41 and the airflow generating device 51 may be used to carry the dust A away, and should not be limited thereto.

4 is a second preferred embodiment of a large screen cleaning device of the present invention. The second preferred embodiment is substantially the same as the first preferred embodiment, and the same portions are not described in detail herein. The difference is that the shape of the large screen 31 is a planar state, 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 a ventilation device for sucking the negative pressure space. The air of 32 causes the plurality of holes 311 of the large screen 31 to generate an air flow.

Preferably, the plurality of holes 311 have a hole diameter of 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 disposed on the large screen 31. In actual implementation, the aperture and the separation distance of the plurality of holes 311 are actually disposed. It should be set in actual use and should not be limited to this.

The aperture of the plurality of holes 311 is not large. Therefore, the viewer does not notice the existence of the plurality of holes 311 when viewing the projected image in the distance. The plurality of holes 311 can adjust the pressure difference between the inner and outer sides of the large screen 31 to avoid excessive pressure difference. This causes damage to the large screen 31. In addition, the plurality of holes 311 can conduct sound, so that the audio device can be disposed behind the large screen 31, so that the viewer does not see the audio device, and has an aesthetic effect.

The vibration generating device 41 is a sound wave generating member that generates sound waves to the air to cause vibration of the large screen 31. Preferably, the vibration generating device 41 is an acoustic device of the projection device, and the large screen 31 is vibrated by the air.

When the large screen 31 generates vibration, it will shake off the dust A attached to the large screen 31, and 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 the outside to reach the large screen 31. The effect of dust removal.

Referring to FIG. 5, a third preferred embodiment of a large-screen cleaning device of the present invention is substantially the same as the second preferred embodiment, and the same portions are not described in detail herein. The difference is that the large screen 31 has a hemispherical shape.

The large screen 31 of the three preferred embodiments is a celestial dome screen for projecting a celestial body, and the large screen 31 is placed on the indoor ceiling by the support member, and the large screen 31 and the ceiling surround define the negative pressure space 32. The airflow generating device 51 suctions the air of the negative pressure space 32 to generate a plurality of holes 311 on the large screen 31 to generate an air flow.

When the vibration generating device 41 causes the large screen 31 to vibrate, and the static electricity eliminating device 61 is used to eliminate static electricity to the large screen 31 and the dust A attached to the large screen 31, the dust A attached to the large screen 31 is Upon the separation, the dust A will be driven by the airflow, passing through the plurality of holes 311 to the negative pressure space 32 and being carried away.

Referring to FIG. 6 , a fourth preferred embodiment of a large screen cleaning device of the present invention is substantially the same as the third preferred embodiment, and the same portions are not described in detail herein. The difference is that the shape of the large screen 31 is a spherical aspect.

The large screen 31 forms a spherical surface on a base. The base may be disposed on the ground or may be disposed on the ceiling. The large screen 31 and the base surround the negative pressure space 32, and the projection device supports the large screen 31. Projection so that the viewer can view the sphere picture.

The vibration generating device 41 is an audio device disposed in the negative pressure space 32. When the sound is played, the large screen 31 can be vibrated. The static eliminating device 61 can be disposed 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 of the negative pressure space 32 so that the dust A is carried by the airflow, and the plurality of holes 311 enter the negative pressure space 32 and are discharged outward.

Referring to FIG. 7, a large-scale screen dust removal method according to the present invention includes a static elimination step 901, a vibration step 902, and a take-off step 903.

First, the static elimination step 901 is performed. The static elimination device 61 emits neutralizing ions to the large screen 31 to eliminate static electricity of the large screen 31 and the dust A attached to the large screen 31. The static elimination step 901 is performed to directly perform the shaking step 902 and the stripping step 903.

The shaking step 902 is then performed, and the vibration generating device 41 causes the large screen 31 to vibrate to cause the dust A to be shaken away from the large screen 31.

The vibration generating device 41 may cause the large screen 31 to vibrate by tapping, or may use the sound wave to cause the large screen 31 to vibrate to shake the dust A away from the large screen 31. The knocking and sound waves can be simultaneously used to cause the large screen 31 to vibrate.

Finally, the stripping step 903 is performed, and the airflow generating device 51 generates an air flow on the large screen 31 to carry away the dust A from the large screen 31.

The airflow generating device 51 generates airflow on the large screen 31 by sucking air. In actual implementation, air may be blown to the large screen 31 by blowing, so that the large screen 31 is on the large screen 31. Airflow should not be limited to this.

It should be noted that the vibration generating device 41, the airflow generating device 51, and the static eliminating device 61 do not affect the projection screen of the projection device, and the dust removal operation of the large screen 31 can be performed while the movie is being played. There is no need to stop the video playback to build a scaffold or use a ladder device to clean the screen, which effectively improves the running time of the projection device and saves the cleaning cost.

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

First, remove dust:

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

Second, simultaneous projection and dust removal:

The vibration generating device 41, the airflow generating device 51, and the static electricity eliminating device 61 do not affect the projection screen of the projection device, and the dust removal operation of the large screen 31 can be performed while the movie is being played.

Third, you can clean the screen of any shape:

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

In summary, the present invention utilizes the static elimination device 61 to eliminate static electricity of the large screen 31 and the dust A attached to the large screen 31, and the vibration generating device 41 causes the large screen 31 to vibrate, and the airflow generating device is utilized. The belt A is separated from the dust A which is shaken off, and the dust A of the large screen 31 is effectively removed, so that the object of the present invention can be achieved.

However, the above is only the four preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent changes made by the scope of the present invention and the description of the invention are Modifications are still within the scope of the invention.

Claims (10)

 A large screen dust removing device comprises: a screen unit comprising a large screen, the large screen is attached with at least one dust; a vibration unit comprising a vibration generating device for vibrating the large screen to make the dust shake off the large screen And a gas flow unit comprising an air flow generating device for generating an air flow on the large screen to carry the dust away from the large screen.    The large screen dust removing device according to claim 1 further includes a static electricity eliminating unit including a static electricity eliminating device for eliminating static electricity of the dust.    A large screen dust removing device according to claim 1, wherein the vibration generating device is a striking member that strikes the large screen to generate a shock.    A large screen dust removing device according to claim 1, wherein the vibration generating device is a sound wave generating member that generates sound waves to the air to cause the large screen to vibrate.    The large screen dust removing device according to claim 1, wherein the large screen has one of a planar shape, a curved surface state, a hemispherical surface state, and a spherical surface shape.    The large screen dust removing device according to claim 1, wherein the airflow generating device is a drafting device for sucking air on the large screen to generate an airflow on the large screen.    The large screen dust removing device according to claim 1, wherein the screen unit further comprises a negative pressure space connected to the large screen, wherein the large screen is provided with a plurality of holes, and the airflow generating device is a ventilation device. The air for sucking the negative pressure space generates airflow for the plurality of holes of the large screen.    The large screen dust removing device according to claim 1, wherein the screen unit further comprises a supporting member connected to the large screen, the vibration generating device is disposed on the supporting member, and tapping the supporting member, The support member transmits the force of the tap to the large screen to cause the large screen to vibrate.    A large screen dust removing method comprises the following steps: a vibration step, at least one dust is attached to a large screen, and a vibration generating device causes the large screen to vibrate to make the dust shake off the large screen; and a step away from the screen The airflow generating device generates an air flow on the large screen to carry away dust that is off the large screen.    According to the large screen dust removal method described in claim 9 of the patent application, before the vibration step, a static elimination step is further included, and a static elimination device emits neutralizing ions to the large screen to eliminate dust attached to the large screen. Static electricity.