CN214070060U - Spontaneous sound laser projection display screen - Google Patents
Spontaneous sound laser projection display screen Download PDFInfo
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- CN214070060U CN214070060U CN202022745923.3U CN202022745923U CN214070060U CN 214070060 U CN214070060 U CN 214070060U CN 202022745923 U CN202022745923 U CN 202022745923U CN 214070060 U CN214070060 U CN 214070060U
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- laser projection
- display screen
- projection display
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Abstract
The utility model discloses a spontaneous sound laser projection display screen, include: the optical display film is fixed on the front surface of the sounding back plate, the electromagnetic driver and the bass unit are fixed on the back surface of the sounding back plate, and the electromagnetic driver is used for converting received electroacoustic signals into mechanical vibration and driving a complex of the optical display film and the sounding back plate to vibrate together, so that air is further vibrated to generate sound; the bass unit is used for independently generating bass according to the received signals. The utility model discloses a spontaneous sound laser projection display screen has solved the not too big and near the not good problem of low frequency effect that the wall installation leads to of spontaneous sound laser projection screen vibration range.
Description
Technical Field
The utility model relates to a spontaneous acoustic screen technical field especially relates to a spontaneous acoustic laser projection display screen.
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 only used as a picture display medium of the laser display system, and the sound of the laser display system is usually provided by a loudspeaker built in the laser projector or by sound equipment connected with the laser projector. The existing laser projector built-in loudspeaker is used for realizing audio reproduction and is limited by the mounting space inside the projector and an internal precise optical system, the size and the power of the loudspeaker are generally lower, and the audio reproduction effect is general. The external loudspeaker sound box occupies space, is messy in wiring and inconvenient to use, the mainstream size of the laser display product is 100', the size of a display area in the horizontal direction is far larger than that of a traditional flat-panel television, and the external loudspeaker system has obvious phenomena of separation and desynchronization of sound and a display picture, so that the audio-visual experience is seriously influenced.
At present along with the rise and development of laser display technology, each manufacturer actively develops the screen spontaneous acoustic technology of utilizing the vibration sound production of laser display screen, but the low frequency effect that wants the screen of self-sound production is outstanding, must have great vibration area and great vibration amplitude, the area of spontaneous acoustic laser projection display screen is enough big, but because self-sound production laser projection display screen still needs the display frame, its vibration amplitude when self-sound production need control in the scope that the frame shake can not be perceived to the naked eye, vibration amplitude can not be too big, consequently restricted the low frequency effect from the sound production screen. In addition, the front side and the back side of the flat plate vibrating sound production can produce sound, when the flat plate vibrating sound production screen is mounted close to a wall, the sound produced by the back side of the standing wave effect screen can interfere with the sound produced by the front side of the screen, the low frequency effect is particularly obvious in low frequency, the low frequency effect is greatly influenced, and the low frequency effect of the self-sounding screen is greatly degraded.
SUMMERY OF THE UTILITY MODEL
Weak point to prior art exists, the utility model aims to provide a spontaneous sound laser projection display screen can realize the screen from the sound production, simultaneously, through the independent bass unit of the addition in spontaneous sound laser projection display screen, through the outstanding low frequency effect of independent bass unit promotion whole spontaneous sound laser projection screen's bass effect, has solved spontaneous sound laser projection screen vibration amplitude and should not too big and near the not good problem of low frequency effect that the wall installation leads to.
The purpose of the utility model is realized through the following technical scheme:
a spontaneous acoustic laser projection display screen, comprising: the optical display film is fixed on the front surface of the sounding back plate, the electromagnetic driver and the bass unit are fixed on the back surface of the sounding back plate, and the electromagnetic driver is used for converting received electroacoustic signals into mechanical vibration and driving a complex of the optical display film and the sounding back plate to vibrate together, so that air is further vibrated to generate sound; the bass unit is used for independently generating bass according to the received signals;
the utility model discloses a spontaneous sound laser projection display screen is at the during operation, and electromagnetic drive changes laser projector's electroacoustic signal into mechanical vibration, and the vibration is produced by the complex body of optical display film and sound production backplate, again by complex body vibration air production sound, simultaneously, bass unit is then according to the signal independent bass that receives to increase the low frequency effect of spontaneous sound screen by a wide margin;
wherein, in specific low frequency sound processing mode, can the difference of mounted position set up two kinds of low frequency sound processing modes, when spontaneous sound laser projection display screen is for leaning on the wall installation, then can adopt the frequency division mode, independent bass unit is responsible for the low band sound promptly, filter the low band part of screen vibration sound production, screen vibration sound production is only responsible for well high frequency range sound, when spontaneous sound laser projection display screen is for not leaning on the wall installation, then can adopt the non-frequency division mode, the low frequency of screen vibration sound production superposes with independent bass unit's low frequency each other promptly, produce more outstanding low frequency effect, specifically can set for according to actual conditions.
Further, still include the structure frame, the cladding of structure frame is around the complex body of optical display film and sound production backplate, and wherein, the structure frame provides structural strength for whole screen, still can provide the fulcrum for independent bass unit's installation simultaneously.
Furthermore, an elastic material is padded between the structural frame and the end part of the composite body of the optical display film and the sound production backboard, and an elastic connection mode or a soft material contact mode can be adopted in practice, so that vibration noise is avoided.
Furthermore, the bass unit is in a cuboid shape, the length is 200 mm-2600 mm, the width is 100 mm-800 mm, the thickness is not more than 30mm, and the specific size can be selected according to the space on the back of the screen and the sound effect.
Further, the rated power of the bass unit is not lower than 15 watts, and preferably about 40 watts.
Further, the connection mode of the plurality of bass units can be determined according to actual conditions particularly by combining the plurality of bass units in a series connection mode or a parallel connection mode or a series-parallel connection mode.
Further, the bass units are implemented by passive radiators and/or ductwork, and a plurality of individual bass units, preferably 2, may be used for each self-sounding screen.
Further, the bass unit is realized by the tuber pipe, and the bass unit is installed in the intermediate position or the both sides position at the sound production backplate back, and the opening of tuber pipe is towards sound production backplate below when the bass unit is installed in the intermediate position at the sound production backplate back, and when the bass unit was installed in the both sides position at the sound production backplate back, the opening of tuber pipe was towards the outside of sound production backplate respectively.
Furthermore, the optical display film is bonded with the sound production back plate through an adhesive, and the electromagnetic driver is bonded with the sound production back plate through the adhesive.
Furthermore, an elastic material is padded between the bass unit and the sounding back plate and is isolated by adopting an elastic or soft material, so that abnormal sound caused by mutual collision can be avoided.
Compared with the prior art, the utility model, have following advantage and beneficial effect:
in the structure of the self-sounding screen in the prior art, if the low-frequency effect is outstanding, a larger vibration area and a larger vibration amplitude are necessary, the area of the self-sounding laser projection display screen is large enough, but because the self-sounding laser projection display screen also needs to display a picture, the vibration amplitude during self-sounding needs to be controlled in a range that the picture jitter can not be detected by naked eyes, and the vibration amplitude can not be overlarge, the low-frequency effect of the self-sounding screen is limited, meanwhile, because the front side and the back side of the panel vibration sounding can both make sound, the sound made from the back side of the screen can interfere the sound made from the front side of the screen when the panel vibration sounding screen is mounted close to a wall, the self-sounding laser projection display screen is especially obvious in the low-frequency band, and also has a larger negative effect on the low-frequency effect, aiming at the problems, the utility model discloses a laser projection display screen capable of realizing self-sounding, simultaneously, through the independent bass unit of addition in spontaneous sound laser projection display screen, promote the bass effect of whole spontaneous sound laser projection screen through the outstanding low frequency effect of independent bass unit, solved spontaneous sound laser projection screen vibration amplitude and should not too big and close to the not good problem of low frequency effect that the wall installation leads to. Just the utility model discloses a spontaneous sound laser projection display screen wholly still has compact structure, simple structure's advantage.
Drawings
Fig. 1 is a schematic cross-sectional view of a spontaneous acoustic laser projection display screen according to the present invention;
FIG. 2 is a schematic diagram of the rear side of a spontaneous acoustic laser projection display screen according to an embodiment;
fig. 3 is a schematic diagram of the back of a spontaneous acoustic laser projection display screen according to an embodiment.
Wherein, the names corresponding to the reference numbers in the drawings are:
the loudspeaker comprises a base, a display screen, a loudspeaker body, a loudspeaker shell and a loudspeaker shell, wherein the loudspeaker shell comprises a 1-optical display film, a 2-sound production back plate, a 3-electromagnetic driver, a 4-bass unit, a 5-adhesive layer, 6-elastic material, a 7-structural frame and 8-structural support rods.
Detailed Description
The present invention will be described in further detail with reference to the following examples:
examples
As shown in fig. 1, a spontaneous acoustic laser projection display screen includes: optical display film 1, sound production backplate 2, a plurality of electromagnetic drive 3, structure frame 7 and a plurality of bass unit 4.
Specifically, optical display film 1 is fixed in the front of sound production backplate 2, and electromagnetic driver 3 and bass unit 4 are fixed in the back of sound production backplate 2, and in this embodiment, sound production backplate 2 is connected with optical display film 1 and electromagnetic driver 3 through the adhesive respectively, and optical display film 1 is in the same place through the compound of adhesive and the one side of sound production backplate 2, and the adhesive constitutes one deck adhesive layer 5 between optical display film 1 and sound production backplate 2.
Preferably, the sound-producing back plate 2 in the embodiment has a thickness not greater than 15mm and a density not greater than 0.3g/cm3Is made of the light rigid material.
The structure frame 7 is wrapped around the complex of the optical display film 1 and the sounding back plate 2, the structure frame 7 can provide structural strength for the whole screen, and meanwhile, a fulcrum can be provided for installation of the independent bass unit 4.
Preferably, in this embodiment, the elastic material 6 is padded between the structural frame 7 and the end of the composite of the optical display film 1 and the sound-generating back plate 2, and in practice, an elastic connection method or a soft material contact may be adopted, so as to avoid generating vibration noise.
Specifically, the shape of the bass unit 4 in this embodiment is a rectangular parallelepiped, the length is 200mm to 2600mm, the width is 100mm to 800mm, and the thickness is not greater than 30mm, and in practice, the specific size can be selected according to the space on the back of the screen and the sound effect.
Meanwhile, the rated power of the bass unit 4 is not lower than 15 watts, preferably about 40 watts. When the bass units 4 are installed, the bass units can be combined in a series connection mode, a parallel connection mode or a series-parallel connection mode, and the connection mode can be determined according to actual conditions.
Specifically, the bass unit 4 may be implemented by one of two ways, namely, a wind pipe and a passive radiator, or a mixture of the two ways, and each self-sounding screen may use a plurality of independent bass units 4, and preferably 2 bass units 4 are provided in this embodiment.
During specific installation, bass unit 4 can be installed in the intermediate position or the both sides position at 2 backs of sound backplate, specifically as shown in fig. 2 and fig. 3, wherein, the spontaneous sound laser projection display screen of fig. 2 includes 2 electromagnetic drivers 3 and 2 bass units 4, and is equipped with a structural support pole 8 in order to strengthen screen bulk strength in 2 back middle parts of sound backplate, and 2 bass units 4 are installed respectively in the position of adjacent structural support pole 8 both sides. The self-sounding laser projection display screen of fig. 3 includes 3 electromagnetic drivers 3 and 1 bass unit 4, and the bass unit 4 is installed at the position right in the middle of the back of the sound-emitting back panel 2.
During the specific installation, if bass unit 4 is realized by the tuber pipe and when installing in the intermediate position at the back of sound production backplate 2, then the opening of tuber pipe is towards sound production backplate 2 below, when the tuber pipe was installed in the both sides position at the back of sound production backplate 2, then the opening of tuber pipe is towards the outside of sound production backplate 2 respectively.
Preferably, in this embodiment, an elastic material 6 is padded between the bass unit 4 and the sound-producing back panel 2, and the two are isolated by an elastic or soft material, so as to avoid the generation of abnormal sound due to mutual collision.
The utility model discloses a spontaneous sound laser projection display screen is at the during operation, and electromagnetic drive 3 changes laser projector's electroacoustic signal into mechanical vibration, and the vibration is produced by the complex body of optical display film 1 and sound production backplate 2, produces sound by complex body vibration air again, and simultaneously, bass unit 4 then independently produces the bass according to the signal received to increase the low frequency effect from the sound production screen by a wide margin.
Preferably, in practical application, the electromagnetic driver 3 and the bass unit 4 can be set to adopt a bluetooth mode to realize wireless transmission of signals, so that the appearance and the convenience of the whole machine are further improved.
The spontaneous acoustic laser projection display screen in the embodiment can set two low-frequency sound processing modes through software processing so as to adapt to different installation modes. When spontaneous sound laser projection display screen is for leaning on the wall installation, then can adopt the frequency division mode, independent bass unit 4 is responsible for the low band sound promptly, filter the low band part of screen vibration sound production, screen vibration sound production is only responsible for well high frequency range sound, when spontaneous sound laser projection display screen is for the installation of non-leaning on the wall, then can adopt the non-frequency division mode, the low frequency of screen vibration sound production and independent bass unit 4's low frequency superpose each other promptly, produce more outstanding low frequency effect, can specifically set for according to actual conditions.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A self-generating acoustic laser projection display screen, comprising: the optical display film is fixed on the front surface of the sounding back plate, the electromagnetic driver and the bass unit are fixed on the back surface of the sounding back plate, and the electromagnetic driver is used for converting received electroacoustic signals into mechanical vibration and driving a complex of the optical display film and the sounding back plate to vibrate together, so that air is further vibrated to generate sound; the bass unit is used for independently generating bass according to the received signals.
2. The self-generating acoustic laser projection display screen according to claim 1, further comprising a structural frame, wherein the structural frame is wrapped around the composite of the optical display film and the sound-generating backplate.
3. The self-generating laser projection display screen of claim 2, wherein an elastic material is padded between the structural border and the end of the composite of the optical display film and the sound backplate.
4. The screen of claim 1, wherein the bass unit is rectangular, has a length of 200mm to 2600mm, a width of 100mm to 800mm, and a thickness of no more than 30 mm.
5. The self-generating acoustic laser projection display screen of claim 1, wherein the bass unit has a power rating of no less than 15 watts.
6. The self-generating acoustic laser projection display screen of claim 1, wherein a plurality of said bass units are combined in series or in parallel or in series-parallel.
7. The self-generating acoustic laser projection display screen according to any one of claims 1 to 6, wherein the bass unit is implemented by a passive radiator and/or an air duct.
8. The self-sounding laser projection display screen of claim 7, wherein the bass unit is implemented by an air duct, and the bass unit is installed at a middle position or two side positions of the back surface of the sound backplate, the opening of the air duct faces below the sound backplate when the bass unit is installed at the middle position of the back surface of the sound backplate, and the openings of the air duct face to the outside of the sound backplate when the bass unit is installed at the two side positions of the back surface of the sound backplate.
9. The self-generating laser projection display screen of claim 1, wherein the optical display film is bonded to the sound backplate by an adhesive, and the electromagnetic driver is bonded to the sound backplate by an adhesive.
10. The self-generating laser projection display screen of claim 1, wherein an elastic material is padded between the bass unit and the sound backplate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022745923.3U CN214070060U (en) | 2020-11-24 | 2020-11-24 | Spontaneous sound laser projection display screen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022745923.3U CN214070060U (en) | 2020-11-24 | 2020-11-24 | Spontaneous sound laser projection display screen |
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| CN214070060U true CN214070060U (en) | 2021-08-27 |
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| CN202022745923.3U Active CN214070060U (en) | 2020-11-24 | 2020-11-24 | Spontaneous sound laser projection display screen |
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Cited By (1)
| 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 |
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2020
- 2020-11-24 CN CN202022745923.3U patent/CN214070060U/en active Active
Cited By (1)
| 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 |
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