CN110850671A - Self-sounding laser projection display screen and wall-mounted tone quality improvement method thereof - Google Patents
Self-sounding laser projection display screen and wall-mounted tone quality improvement method thereof Download PDFInfo
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- CN110850671A CN110850671A CN201911143077.3A CN201911143077A CN110850671A CN 110850671 A CN110850671 A CN 110850671A CN 201911143077 A CN201911143077 A CN 201911143077A CN 110850671 A CN110850671 A CN 110850671A
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/565—Screens allowing free passage of sound
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Abstract
The invention provides a self-sounding laser projection display screen and a wall-mounted tone quality improving method thereof, and belongs to the field of ultra-short-focus laser projection display and the technical field of acoustics. In order to solve the problem that the sound emitted from the back of the screen can interfere with the sound emitted from the front when the screen is mounted on a wall because the front side and the back side of a flat plate which generates sound by vibration can generate sound at present, the invention comprises the following steps: the self-vibration of the spontaneous sound laser projection display screen drives the air to vibrate to generate sound, and a whole noise elimination structure and/or a noise elimination material with the size equivalent to that of the screen are/is arranged on the back of the spontaneous sound laser projection display screen and/or a wall corresponding to the back of the spontaneous sound laser projection display screen in a hanging mode, so that the influence of the sound emitted from the back of the screen on the sound quality is weakened. The invention can weaken the influence of the sound emitted from the back of the screen on the sound quality, thereby improving the whole sound quality.
Description
Technical Field
The invention relates to the field of ultrashort-focus laser projection display and the technical field of acoustics, in particular to a spontaneous acoustic laser projection display screen and a wall-mounted tone quality improving method thereof.
Background
Laser display is an innovative display technology which is started after the traditional flat panel display technology, and has the technical advantages of wide color gamut, long service life, high image quality, easy realization of large-screen display, environmental protection, energy conservation and the like. The laser projector and the screen are separated in product form and matched with each other to form a set of laser display system. The screen is usually made into a hard screen by adopting a high-quality environment light resistant optical film such as a Fresnel film, a black grid film, a micro-lens array film and other composite hard rigid back plates and a structural frame, or made into a flexible screen by hanging and tensioning an optical screen on a frame supporting frame in a spring, magic tape, elastic strips and other modes, assembling a modeling frame and the like. The screen is usually used as a display medium of the laser display system, and the sound of the laser display system is usually provided through a speaker built in the laser projector or through an external sound of the laser projector.
The existing laser projector built-in loudspeaker is used for realizing audio reproduction and is usually limited by the installation space inside the projector, and the projector internally comprises a precise optical system, so that in order to avoid the influence of vibration on the optical system, the loudspeaker is generally small in size, the power cannot be too high, and a good audio reproduction effect cannot be obtained. The external loudspeaker sound box occupies a large space and is messy in wiring and inconvenient to use, the size of a display area in the horizontal direction is 2.21 meters, the size is far larger than that of a traditional flat-panel television, the phenomenon that sound and a display picture are separated and out of synchronization when the external multi-channel loudspeaker system is matched for use is obvious, and audio-visual experience is seriously influenced.
Disclosure of Invention
The invention aims to provide a self-sounding laser projection display screen and a wall-mounted tone quality improving method thereof, and solves the problem that the front side and the back side of the screen generate sound due to the vibration of a flat plate at present, and the sound generated from the back side of the screen can interfere with the sound generated from the front side during wall-mounted mounting.
The invention solves the technical problem, and adopts the technical scheme that: according to the method for improving the wall-mounted tone quality of the spontaneous acoustic laser projection display screen, the air is driven to vibrate to generate sound through the self vibration of the spontaneous acoustic laser projection display screen, and a whole noise elimination structure and/or a noise elimination material with the size equivalent to that of the screen are/is arranged on the back of the spontaneous acoustic laser projection display screen and/or a wall corresponding to the back of the spontaneous acoustic laser projection display screen in a hanging mode, so that the influence of the sound generated by the back of the screen on the tone quality is weakened.
Preferably, the sound attenuation structure is an egg cotton structure or a pyramid structure.
Spontaneous acoustic laser projection display screen, including optical display film, light rigidity sound production backplate, adhesive, soft material, structure frame and electromagnetic drive ware, optical display film and electromagnetic drive ware set up respectively in the both sides of light rigidity sound production backplate to adopt the adhesive to be connected with the sound production backplate respectively, the complex body and the screen structure frame elastic connection of light rigidity sound production backplate or adopt soft material to contact of optical display film.
Preferably, the electromagnetic drivers are symmetrically distributed in the horizontal direction of the screen, and the number of the electromagnetic drivers is even.
Preferably, the lightweight rigid sound back panel has a thickness of 15mm or less and a density of 0.3g/cm3The following.
Preferably, the optical display film and the electromagnetic driver are respectively arranged on two sides of the light rigid sound production backboard through adhesives.
Preferably, the electromagnetic driver converts an electroacoustic signal of the laser projector into mechanical vibration, and then vibrates air to generate sound by a complex consisting of the optical display film and the light-weight sound-generating plate.
The self-sounding laser projection display screen and the wall-mounted tone quality improving method thereof have the advantages that the self-sounding laser projection display screen vibrates to drive air to vibrate to generate sound, and the whole noise elimination structure and/or the noise elimination material with the size equivalent to that of the screen are arranged on the back of the self-sounding laser projection display screen and/or the wall corresponding to the back of the self-sounding laser projection display screen in a hanging mode, so that the influence of the sound generated by the back of the screen on the tone quality is weakened, and the whole tone quality is improved.
Drawings
Fig. 1 is a schematic side view of an entire screen of a self-sounding laser projection display screen according to an embodiment of the present invention.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the embodiments and the accompanying drawings.
According to the wall-mounted tone quality improving method of the self-sounding laser projection display screen, air is driven to vibrate to generate sound through the self vibration of the self-sounding laser projection display screen, and the whole noise elimination structure and/or the noise elimination material with the size equivalent to that of the screen are arranged on the back of the self-sounding laser projection display screen and/or the wall corresponding to the back of the self-sounding laser projection display screen in a hanging mode, so that the influence of the sound generated by the back of the screen on tone quality is weakened.
In the method, the silencing structure can be an egg cotton structure, a pyramid structure or other irregular structures, and is beneficial to absorption of sound on the back of the screen. The silencing material and the silencing structure can be used simultaneously, namely the silencing material is used for manufacturing the silencing structure so as to obtain better silencing effect.
The invention further provides a self-sounding laser projection display screen which comprises an optical display film, a light rigid sounding back plate, an adhesive, a soft material, a structural frame and an electromagnetic driver, wherein the optical display film and the electromagnetic driver are respectively arranged on two sides of the light rigid sounding back plate and are respectively connected with the sounding back plate through the adhesive, and a complex of the optical display film and the light rigid sounding back plate is elastically connected with the structural frame of the screen or is in contact with the soft material, so that vibration noise is avoided.
In the above device, the electromagnetic drivers are symmetrically distributed with respect to the horizontal direction of the screen, and the number is preferably an even number. The light rigid sound-emitting back plate has a thickness of 15mm or less and a density of 0.3g/cm3The following. The optical display film and the electromagnetic driver are respectively arranged on two sides of the light rigid sound production backboard through adhesives. Electromagnetic driver for driving laser projector to emit electric signalThe signal is converted into mechanical vibration, and then the complex consisting of the optical display film and the light-weight sound-producing board vibrates the air to produce sound.
Examples
The embodiment of the invention discloses a spontaneous acoustic laser projection display screen, wherein the overall side schematic view of the screen is shown in figure 1, the screen comprises an optical display film, a light rigid sounding back plate, an adhesive, a soft material, a structural frame and electromagnetic drivers, the optical display film and the electromagnetic drivers are respectively arranged on two sides of the light rigid sounding back plate and are respectively connected with the sounding back plate by the adhesive, and the electromagnetic drivers are symmetrically distributed in the horizontal direction relative to the screen and are even in number.
In this embodiment, the entire surface of the sound-deadening material or the sound-deadening structure having a size equivalent to that of the screen is provided on the screen back surface or the wall corresponding to the screen back surface, or the entire surface of the sound-deadening material or the sound-deadening structure is provided on the screen back surface and the wall at the same time, so as to attenuate the sound generated from the screen back surface. The complex of the optical display film and the light rigid sounding back plate of the screen and the frame of the screen structure are in elastic connection or are in contact with each other by adopting a soft material, so that the generation of vibration noise is avoided.
Claims (7)
1. The method for improving the tone quality of the wall-mounted spontaneous acoustic laser projection display screen is characterized in that the self vibration of the spontaneous acoustic laser projection display screen drives air to vibrate to generate sound, and a whole noise elimination structure and/or noise elimination material with the same size as the screen is arranged on the back of the spontaneous acoustic laser projection display screen and/or a wall corresponding to the back of the spontaneous acoustic laser projection display screen in a hanging mode, so that the influence of the sound generated from the back of the screen on the tone quality is weakened.
2. The method for improving the wall-mounted tone quality of the self-sounding laser projection display screen according to claim 1, wherein the noise reduction structure is an egg-cotton structure or a pyramid structure.
3. The spontaneous acoustic laser projection display screen is characterized by comprising an optical display film, a light rigid sound production back plate, an adhesive, a soft material, a structural frame and an electromagnetic driver, wherein the optical display film and the electromagnetic driver are respectively arranged on two sides of the light rigid sound production back plate and are respectively connected with the sound production back plate through the adhesive, and a complex of the optical display film and the light rigid sound production back plate is elastically connected with the structural frame of the screen or is in contact with the soft material.
4. The spontaneous acoustic laser projection display screen of claim 3, wherein the electromagnetic drivers are symmetrically distributed with respect to the horizontal direction of the screen, and the number of the electromagnetic drivers is an even number.
5. The screen of claim 3, wherein the lightweight rigid sound back panel has a thickness of 15mm or less and a density of 0.3g/cm3The following.
6. The self-generating acoustic laser projection display screen of claim 3, wherein the optical display film and the electromagnetic driver are disposed on both sides of the lightweight rigid sound backplate by an adhesive.
7. The self-generating acoustic laser projection display screen of claim 3, wherein the electromagnetic driver converts the electrical sound signal of the laser projector into mechanical vibration, and the air is vibrated by a composite of the optical display film and the lightweight panel to generate sound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911143077.3A CN110850671A (en) | 2019-11-20 | 2019-11-20 | Self-sounding laser projection display screen and wall-mounted tone quality improvement method thereof |
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| CN201911143077.3A CN110850671A (en) | 2019-11-20 | 2019-11-20 | Self-sounding laser projection display screen and wall-mounted tone quality improvement method thereof |
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| CN110850671A true CN110850671A (en) | 2020-02-28 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114020176A (en) * | 2021-11-16 | 2022-02-08 | 四川长虹电器股份有限公司 | Touch sounding projection display screen |
| CN114089589A (en) * | 2020-08-24 | 2022-02-25 | 青岛海信激光显示股份有限公司 | Projection screen and laser projection system |
| CN114089590A (en) * | 2020-08-24 | 2022-02-25 | 青岛海信激光显示股份有限公司 | Projection screen and laser projection system |
| CN114125089A (en) * | 2020-08-31 | 2022-03-01 | 北京小米移动软件有限公司 | Terminal device, signal processing method and device, and storage medium |
| CN114500896A (en) * | 2020-11-11 | 2022-05-13 | 海信视像科技股份有限公司 | Display device |
| WO2022152301A1 (en) * | 2021-01-18 | 2022-07-21 | 青岛海信激光显示股份有限公司 | Sound-production screen and laser projection system |
| WO2022190804A1 (en) * | 2021-03-11 | 2022-09-15 | 富士フイルム株式会社 | Projection screen |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022190804A1 (en) * | 2021-03-11 | 2022-09-15 | 富士フイルム株式会社 | Projection screen |
| CN114020176A (en) * | 2021-11-16 | 2022-02-08 | 四川长虹电器股份有限公司 | Touch sounding projection display screen |
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Application publication date: 20200228 |