CN207150803U - Intelligence projection audio amplifier - Google Patents
Intelligence projection audio amplifier Download PDFInfo
- Publication number
- CN207150803U CN207150803U CN201721068371.9U CN201721068371U CN207150803U CN 207150803 U CN207150803 U CN 207150803U CN 201721068371 U CN201721068371 U CN 201721068371U CN 207150803 U CN207150803 U CN 207150803U
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- China
- Prior art keywords
- projecting apparatus
- audio amplifier
- speaker body
- motor
- surrounding side
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Abstract
The utility model discloses a kind of intelligence projection audio amplifier, including the speaker body for being put outside sound and projecting apparatus；The projecting apparatus is arranged in the speaker body, has the central axis with horizontal line angle at 45 °；The exiting surface of the projecting apparatus is parallel to the central axis, and it can be rotated around the central axis in units of 180 °, the exiting surface rotates to peak from minimum point or rotated from peak to minimum point in each rotary course, so that perspective plane switches between horizontal plane and vertical plane.Intelligence projection audio amplifier of the present utility model, which integrates, to be put outside sound and menu display function, the projecting direction of projecting apparatus can neatly be changed, realize the automatic switchover of desktop projection and wall projections, and can ensure the projected picture that horizontal table top and vertical metope are formed is not in torsional deformation the problem of, so as to improve the usage experience of user and interaction effect.
Description
Technical field
The utility model belongs to audio output apparatus technical field, is related to a kind of audio amplifier, is to be related to a kind of tool specifically
There is the audio amplifier of projecting function.
Background technology
Audio amplifier is a kind of audio output apparatus, and application field is quite varied.With advances in technology and people's living standard
Continuous improvement, requirement for speaker performance also more and more higher, only the audio amplifier with audio output function can not expire
The use demand of sufficient people's diversification.In office or meeting room, a audio amplifier with menu display function can be same
When meet the dual requirementses of people's vision and the sense of hearing, both comply with development in science and technology, meet market trend again.
The existing audio amplifier for possessing menu display function, is generally divided into two types：
1st, the audio amplifier of display screen is carried, this audio amplifier is imitated because display screen is directly installed in speaker body for display
The consideration of fruit, the size of display screen can not be too small, and the volume that this results in audio amplifier entirety is larger, not readily portable；In addition, such
The display screen of audio amplifier, its size generally require control within 10 cun, the occasion for needing large screen display, it is clear that are uncomfortable
；
2nd, there is the audio amplifier of projecting function, projecting apparatus is integrated into speaker body by this audio amplifier, by the way of projection
By the image projection for needing to show to metope or desktop, with the display size of magnified picture as much as possible, it is big to meet picture
The demand of screen display.
At present, there is the audio amplifier of projecting function, mounting means of its projecting apparatus in speaker body includes two kinds：One kind is
Projecting apparatus is fixedly mounted in speaker body, the audio amplifier of this structure when in use, if desired adjusts projecting direction, it is necessary to right
Speaker products carry out overall upset, inconvenient for operation, projection angle be present and switch inflexible problem；Second is by projecting apparatus
It is rotatably installed in speaker body, the audio amplifier of this structure when in use, only need to rotate projecting apparatus, you can change projection side
To, it is flexible and convenient to use, but the picture for projecting to desktop or metope be present and the problem of distortion in various degree occur, therefore, to
The usage experience and interaction effect at family can produce certain influence.
The content of the invention
The purpose of this utility model is to provide a kind of intelligence projection audio amplifier, can not only realize projecting direction towards water
Plane and towards the free switching between vertical plane both direction, and the throwing formed on horizontal plane and vertical plane can be ensured
Distortion problem is not present in shadow picture.
In order to solve the above technical problems, the utility model is achieved using following technical scheme：
A kind of intelligence projection audio amplifier, including the speaker body for being put outside sound and projecting apparatus；The projecting apparatus is arranged on
In the speaker body, there is the central axis with horizontal line angle at 45 °；The exiting surface of the projecting apparatus is parallel in described
Mandrel line, and can be rotated around the central axis in units of 180 °, the exiting surface is in each rotary course from minimum point
Rotation is rotated to minimum point to peak or from peak, so that perspective plane switches between horizontal plane and vertical plane.
Further, the projecting apparatus is arranged on the top of the speaker body, and the first electricity is provided with speaker body
Machine, the rotating shaft of output axis connection one of first motor, the rotating shaft is arranged on the projecting apparatus, and the axis of the rotating shaft
Overlapped with the central axis, drive the projecting apparatus to be rotated around the central axis by first motor.
In order that the intelligence projection audio amplifier is when in use, projecting apparatus can stretch out from speaker body, to increase audio amplifier
The sound chamber of body, improve audio；And, projecting apparatus can be retracted to speaker body, to reduce. in intelligently projection audio amplifier when not in use
The overall dimensions of intelligence projection audio amplifier, the utility model is additionally provided with telescoping mechanism in the speaker body, with described in driving
Projecting apparatus stretches out or the speaker body of retracting.
Preferably, the telescoping mechanism includes for driving the rack of the first motor movement, engaging with the rack
Gear and the second motor；The output shaft and the gear of second motor are coaxially connected, by driving the gear to revolve
Turn, to control the rack linear to move, and then drive the first motor and the projecting apparatus linear motion, stretch the projecting apparatus
Go out or the speaker body of retracting.
Further, preferably the rack is arranged on one piece of loading plate, passes through the loading plate and the described first electricity
Machine is fixedly connected, and second motor is fixedly mounted in the speaker body.
A kind of preferred structure as the projecting apparatus designs, and the projecting apparatus includes shell and ray machine, and the shell encloses
Into hollow chamber, including top surface, bottom surface and surrounding side, the rotating shaft is arranged on the bottom surface, and the exiting surface is arranged on
On the side；The ray machine is arranged in the hollow chamber, exiting surface described in its camera lens face.
Further, the surrounding side includes the first surrounding side of connection top surface and the two or four the week side of boss of connection bottom surface
Face；Parallel to the central axis, the exiting surface is arranged on the first surrounding side for the first surrounding side；It is described
Second surrounding side forms the inclined-plane to contract with respect to the first surrounding side；The projecting apparatus is under stretching state, its top surface
With the fully extended speaker body in the first surrounding side, the second surrounding side and bottom surface are built in the speaker body；Institute
Projecting apparatus is stated under retracted mode, its first surrounding side, the second surrounding side and bottom surface are built in the speaker body completely
In.
Further, the intelligence projection audio amplifier also includes instruction reception portion and the company for being used to receive the operational order of user
The control circuit of the instruction reception portion is connect, the control circuit is according to the operational order control received first electricity
Machine and the second motor rotate, to respond user's operation.
Preferably, the instruction reception portion is preferably mounted in speaker body, can is hand switch, be coordinated with remote control
In the remote control reception head that uses, the wireless mobile communications module being used cooperatively with mobile phone and mixed-media network modules mixed-media for linking internet
One or more of which.
Preferably, the instruction reception portion preferably connects first motor and the second motor, institute by FPC
Control circuit is stated preferably to be laid on the FPC.
Compared with prior art, intelligence projection audio amplifier of the present utility model has following distinguishing feature and advantage：
（1）Projecting apparatus is integrated in speaker body by the utility model, possesses the same of menu display function making audio amplifier
When, the display picture by the way of projection, compared to for the speaker products for carrying display screen, larger sized projection can be obtained
Picture, it can better adapt to need the application scenario of large screen display；
（2）Projecting apparatus is rotatably installed in speaker body by the utility model, it is possible thereby to neatly change projection
The projecting direction of instrument, realize the automatic switchover of desktop projection and wall projections；
（3）The exiting surface of projecting apparatus is designed to the position relationship with horizontal line angle at 45 ° by the utility model, thus may be used
To ensure the projected picture that horizontal table top and vertical metope are formed is not in torsional deformation the problem of, so as to improve use
The usage experience and interaction effect at family；
（4）Structure of the utility model by projector design into relative speaker body extension type, when in use, projecting apparatus
Stretched out from speaker body, it is possible thereby to increase the sound chamber of speaker body, improve audio；And when not in use, projecting apparatus can be with
Speaker body is retracted to, it is possible thereby to reduce the overall dimensions of intelligence projection audio amplifier, is easy to carry and moves.
After the detailed description of the utility model embodiment is read in conjunction with the figure, other features and advantage of the present utility model
It will become clearer.
Brief description of the drawings
Fig. 1 is the profile knot that the intelligence that the utility model is proposed projects a kind of embodiment of the audio amplifier under unused state
Composition；
Fig. 2 is the contour structures that the intelligence that the utility model is proposed projects a kind of embodiment of audio amplifier in a state of use
Figure；
Fig. 3 is a kind of longitudinal sectional view of embodiment of the intelligence projection audio amplifier shown in Fig. 1；
Fig. 4 is intelligence projection longitudinal sectional view of the audio amplifier to a kind of embodiment of desktop projection shown in Fig. 2；
Fig. 5 is intelligence projection longitudinal sectional view of the audio amplifier to a kind of embodiment of wall projections shown in Fig. 2；
Fig. 6 is a kind of circuit theory frame of embodiment of the circuit part for the intelligence projection audio amplifier that the utility model is proposed
Figure.
Embodiment
Specific embodiment of the present utility model is described in more detail below in conjunction with the accompanying drawings.
As Figure 1-Figure 5, the intelligence projection audio amplifier of the present embodiment is using the setting projecting apparatus 20 in speaker body 10
Mode is realized to put outside sound shows dual-use function with picture.Wherein, speaker body 10 can be designed to hollow body structure, such as
Shown in Fig. 3, required sound chamber so can be both provided for loudspeaker, has ensured audio, can be that projecting apparatus 20 provides receiving space again,
Effectively to control the overall dimensions of audio amplifier.Speaker body 10 is preferably designed to bottom 11 for cylinder, top 12 by the present embodiment
For the structure of hemispheroidal similar bullet cut, as shown in Figure 1 and Figure 2, and formed in the side position at the top 12 of speaker body 10
One opening 13, speaker body 10 is passed in and out for projecting apparatus 20.
Become in order that the projected picture that projecting apparatus 20 is formed in horizontal table top and vertical metope is not in distortion
Projecting apparatus 20 is preferably laid in the top 12 of speaker body 10 by the problem of shape, the present embodiment in a manner of tilting 45° angle.Specifically
For, as shown in figure 3, designing the projecting apparatus 20 can be rotatably installed in speaker body 10 around its center axis 21,
In order to neatly adjust the projecting direction of projecting apparatus 20.The central axis 21 and horizontal line shape angle at 45 ° are designed, and is made
The exiting surface 22 of projecting apparatus 20（That is, the transparent surface of 20 outside throw light of projecting apparatus）Parallel to described central axis 21, i.e.
The exiting surface 22 of projecting apparatus 20 and horizontal line also shape angle at 45 °.The projecting apparatus 20 is designed in units of 180 ° around wherein
Mandrel line 21 rotates, i.e. the angle that projecting apparatus 20 rotates every time is 180 °, and in each rotary course, exiting surface 22 is existed
Switch between its minimum point rotated and peak, and then perspective plane is automatically switched between horizontal plane and vertical plane.
For example, can be designed that smooth surface 22 is located at the minimum point of its whole rotation position in initial position, with reference to shown in Fig. 4, now throw
Shadow direction diagonally downward, can form projected picture in horizontal table top, and projected picture is rectangle, and will not be distorted change
Shape.And after projecting apparatus 20 rotates 180 ° around its center axis 21, the exiting surface 22 is rotated to its whole rotation position most
High point, with reference to shown in Fig. 5, now projecting direction is tilted upward, and projected picture, and projected picture can be formed on vertical metope
It is rectangle, therefore, the problem of being not in projected picture trapezoidal distortion without correction.Thus, projected picture is just realized to exist
Flexible switching between horizontal table top and vertical metope, and can ensure that two projected pictures are normal, undistorted.Control projection
Instrument 20 continues 180 ° of rotation according to previous direction of rotation or opposite direction rotates 180 °, comes back to exiting surface 22 minimum
Point, thus perspective plane can be switched back into horizontal table top again from vertical metope.
In order to realize the automatic rotation of projecting apparatus 20, the present embodiment sets the first motor 30 in speaker body 10,
Rotating shaft 31 is installed on the output shaft of one motor 30, rotating shaft 31 is fixed on projecting apparatus 20, and make the axle center and center of rotating shaft 31
Axis 21 overlaps.When the first motor 30 rotates, the output shaft drive shaft 31 of the first motor 30 rotates, and then passes through rotating shaft 31
Projecting apparatus 20 is driven to rotate, to realize automatic switchover of the perspective plane between horizontal plane and vertical plane.
In order that the intelligence projection audio amplifier of the present embodiment is when in use, projecting apparatus 20 can be released speaker body 10, with
The cavity volume of this increase speaker body, then reserves sufficiently large sound chamber, to ensure audio, the present embodiment is described for loudspeaker
Telescoping mechanism is additionally provided with speaker body 10, drives projecting apparatus 20 flexible with respect to speaker body 10 using telescoping mechanism, i.e.
Intelligence projection audio amplifier start with reference to shown in Fig. 2, Fig. 4, makes exiting surface 22 in use, the driving stretching speaker body 10 of projecting apparatus 20
It is exposed, it thus can both meet the projection requirements of projecting apparatus 20, the audio of audio amplifier can be improved again；And in intelligently projection audio amplifier shutdown not
In use, driving projecting apparatus 20 is retracted to speaker body 10, with reference to shown in Fig. 1, Fig. 3, so as to reduce the overall chi of speaker products
It is very little, to be convenient for carrying and move.Handle 70 can also be further installed in the outside of speaker body 10, as shown in Figure 1 and Figure 2, with
Further facilitate the portable carrying of user.
As a kind of preferred design of the present embodiment, the telescoping mechanism can use the second motor 40, gear 41,
The grade part of rack 42 assembles.Specifically, the second motor 40 can be fixedly mounted in speaker body 10, by gear 41
It is coaxially mounted on the output shaft of the second motor 40, gear 41 and the engaged transmission of rack 42, and then by the circular-rotation of gear 41
It is changed into the linear motion of rack 42, drives projecting apparatus 20 to move along a straight line by rack 42, to stretch out or be retracted to audio amplifier sheet
Body 10.
In order to realize reliable promotion of the rack 42 to projecting apparatus 20, rack 42 is preferably fixedly mounted on by the present embodiment first
On one piece of loading plate 43, then the loading plate 42 is fixedly connected with the first motor 30, such as screw 44 can be used by institute
State loading plate 42 to be fixedly connected on first motor 30, drive rack 42 to move by gear 41, and then drive loading plate
43 move with rack 42, then drive the first motor 30 together to do stretching motion with respect to speaker body 10 with projecting apparatus 20.
In order to be played a supporting role to the loading plate 43, the first motor 30 and projecting apparatus 20, make it in speaker body 10
In can consolidate assembling, the present embodiment is also installed with a support chute in the speaker body 10（Not shown in figure）,
When second motor 40 drives rack 42 to move with moving gear 41, loading plate 43, the first motor 30 and projecting apparatus 20 are propping up
Slided on support chute, to control projecting apparatus 20 steadily to stretch.
A kind of preferred structure as the projecting apparatus 20 designs, and the projecting apparatus 20 is designed to seal bowl by the present embodiment
Type, with reference to shown in Fig. 2, Fig. 3, including the shell that is surrounded by top surface 23, bottom surface 24 and surrounding side 25,26 and it is built in shell
Intrinsic part in the conventional projectors such as ray machine 27, infrared sensor 28 in the hollow chamber formed.The exiting surface 22
Be preferably provided on surrounding side 25, and with the camera lens face of ray machine 27.The exiting surface 22 can be mounted in surrounding side
One piece of lens on 25, can also only be a breach, as long as the light that the camera lens by ray machine 27 can be enable to send is effective
Projection.
In the present embodiment, the top surface 23 of the shell of the projecting apparatus 20 is preferably designed to circular flat, surrounding side bag
Include the first surrounding side 25 of connection top surface 23 and the second surrounding side 26 of connection bottom surface 24.Design the first surrounding side
25 parallel to the central axis 21, and the exiting surface 22 is arranged on the first surrounding side 25.Design the described 2nd 4
All sides 26 form the inclined-plane to contract with respect to the first surrounding side 25, when projecting apparatus 20 is in stretching state, make shell
23 and first surrounding side of top surface, 25 fully extended speaker body 10, the second surrounding side 26 and bottom surface 24 are built in audio amplifier sheet
In body 10, as shown in Figure 4, Figure 5；When projecting apparatus 20 is in retracted mode, make the first surrounding side 25, the second surrounding of shell
Side 26 and bottom surface 24 are built in speaker body 10 completely, as shown in figure 3, only top surface 23 is exposed, and preferably with speaker body
10 flush with outer surface, to improve the overall aesthetic property of audio amplifier.
Rotating shaft 31 is preferably mounted at the bottom surface 24 of shell, the center position below bottom surface 24 can be used to open up axial trough 29
Mode, realize reliable assembling with rotating shaft 31.
Realize and automatically adjust for the retracted position to projecting apparatus 20 and crevice projection angle, the present embodiment is in the audio amplifier sheet
Instruction reception portion 50 is additionally provided with body 10, for receiving the operational order of user.The instruction reception portion 50 can be hand
Dynamic switch or the remote control reception head being used cooperatively with remote control, or the wireless mobile being used cooperatively with mobile phone lead to
Module is believed, also either for linking the diversified forms such as the mixed-media network modules mixed-media of internet.It is of course also possible to selected from above-mentioned form
A variety of designs are in speaker body 10, to facilitate user then to improve projection sound using different control forms operation projection audio amplifier
The flexibility of case control.
The operational order received by instruction reception portion 50 is sent to control circuit, the control circuit can be laid
On single pcb board, the flexible circuitry that instruction reception portion 50 connects the first motor 30 and the second motor 40 can also be laid in
On plate FPC 61,62, the present embodiment is to this without concrete restriction.The control circuit generates according to the operational order received
Corresponding control signal, to control the rotation direction and rotation time of the first motor 30 and the second motor 40（Or rotate step number）.
A kind of preferred electrical architecture as the control circuit designs, as shown in fig. 6, the control circuit bag of the present embodiment
Include controller and three linked switches K1, K2, K3.Wherein, controller can use single-chip microprocessor MCU etc. to have data-handling capacity
Integrated chip, connect described instruction reception portion 50, the operational order received by instruction reception portion 50 parsed,
And then corresponding control signal is generated, control linked switch K1, K2, K3 on off operating mode.Wherein, the first linked switch K1 connects
In the rotating forward current supply circuit of the second motor 40；Second linked switch K2 is connected in the reversion current supply circuit of the second motor 40；
3rd linked switch K3 is connected in the current supply circuit of the first motor 30.
When user performs power-on operation, controller control the first linked switch K1 closure, the second linked switch K2 and
3rd linked switch K3 is remained off, and now, the second motor 40 rotates forward, and driving rack 42 promotes projecting apparatus 20 to stretch out audio amplifier
Body 10, as shown in figure 4, projecting direction is the downward projection of acquiescence, projected picture can be formed in horizontal table top.If desired
Projected picture is formed on vertical metope, then can send the operational order of switching projection angle.Now, controller control the 3rd
Linked switch K3 is closed, and the first linked switch K1 and the second linked switch K2 are remained off, and makes electricity fortune on the first motor 30
OK, drive projecting apparatus 20 rotate 180 °, as shown in figure 5, and then projecting direction is switched to upward projection, the shape on vertical metope
Into projected picture, two perspective planes are thus achieved（Horizontal plane and vertical plane）Flexible switching.When user performs shutdown behaviour
When making, controller controls the second linked switch K2 closures, and the first linked switch K1 and the 3rd linked switch K3 are remained off,
Now, the second motor 40 inverts, and driving rack 42 withdraws projecting apparatus 20 into speaker body 10, as shown in figure 3, to reduce projection
The overall volume of audio amplifier.
It is the intelligence projection audio amplifier small volume of the present embodiment, simple in construction, easy to use, it is possible to achieve projection angle it is flexible
Switching, and the quality of projected picture can be ensured, more preferable usage experience can be provided the user.
Certainly, it is to be also not limited to the example above to limitation of the present utility model, the utility model that described above, which is not,
The variations, modifications, additions or substitutions that those skilled in the art are made in essential scope of the present utility model,
Also the scope of protection of the utility model should be belonged to.
Claims (10)
- A kind of 1. intelligence projection audio amplifier, it is characterised in that including：Speaker body, it is used to outside sound put；Projecting apparatus, it is arranged in the speaker body, has the central axis with horizontal line angle at 45 °；The projecting apparatus Exiting surface parallel to the central axis, and can be rotated around the central axis in units of 180 °, the exiting surface is every Rotate to peak from minimum point or rotated from peak to minimum point in secondary rotary course so that perspective plane horizontal plane with Switch between vertical plane.
- 2. intelligence projection audio amplifier according to claim 1, it is characterised in that the projecting apparatus is arranged on the speaker body Top, be provided with the first motor in speaker body, the rotating shaft of output axis connection one of first motor, the rotating shaft installation On the projecting apparatus, and the axis of the rotating shaft is overlapped with the central axis, and the throwing is driven by first motor Shadow instrument rotates around the central axis.
- 3. intelligence projection audio amplifier according to claim 2, it is characterised in that be additionally provided with the speaker body flexible Mechanism, drive the projecting apparatus stretching or the speaker body of retracting.
- 4. intelligence projection audio amplifier according to claim 3, it is characterised in that the telescoping mechanism includes：Rack, it is used to drive first motor to move；Gear, it is engaged with the rack；Second motor, its output shaft and the gear are coaxially connected, by driving the gear to rotate, to control the rack straight Line moves, and then drives the first motor and the projecting apparatus linear motion, makes the projecting apparatus stretching or the audio amplifier of retracting Body.
- 5. intelligence projection audio amplifier according to claim 4, it is characterised in that the rack is arranged on one piece of loading plate, The loading plate is fixedly connected with first motor, and second motor is fixedly mounted in the speaker body.
- 6. intelligence projection audio amplifier according to claim 3, it is characterised in that the projecting apparatus includes：Shell, it surrounds hollow chamber, including top surface, bottom surface and surrounding side, and the rotating shaft is arranged on the bottom surface, described Exiting surface is arranged on the side；Ray machine, it is arranged in the hollow chamber, exiting surface described in its camera lens face.
- 7. intelligence projection audio amplifier according to claim 6, it is characterised in that the surrounding side includes the of connection top surface One surrounding side and the second surrounding side of connection bottom surface；The first surrounding side parallel to the central axis, it is described go out Smooth surface is arranged on the first surrounding side；The second surrounding side is formed to the oblique of contract with respect to the first surrounding side Face；The projecting apparatus is under stretching state, the fully extended speaker body of its top surface and the first surrounding side, the two or four the week side of boss Face and bottom surface are built in the speaker body；The projecting apparatus is under retracted mode, its first surrounding side, the two or four the week side of boss Face and bottom surface are built in the speaker body completely.
- 8. the intelligence projection audio amplifier according to any one of claim 4 to 7, it is characterised in that also include：Instruction reception portion, for receiving the operational order of user；Control circuit, it connects described instruction reception portion, according to the operational order received control first motor and Second motor rotates.
- 9. intelligence projection audio amplifier according to claim 8, it is characterised in that the instruction reception portion is arranged on speaker body On, the remote control reception head that is used cooperatively for hand switch, with remote control, the wireless mobile communications module being used cooperatively with mobile phone and The one or more of which in mixed-media network modules mixed-media for linking internet.
- 10. intelligence projection audio amplifier according to claim 8, it is characterised in that the instruction reception portion passes through flexible circuitry Plate connects first motor and the second motor, the control circuit are laid on the FPC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721068371.9U CN207150803U (en) | 2017-08-24 | 2017-08-24 | Intelligence projection audio amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721068371.9U CN207150803U (en) | 2017-08-24 | 2017-08-24 | Intelligence projection audio amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207150803U true CN207150803U (en) | 2018-03-27 |
Family
ID=61669876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721068371.9U Withdrawn - After Issue CN207150803U (en) | 2017-08-24 | 2017-08-24 | Intelligence projection audio amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207150803U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107295440A (en) * | 2017-08-24 | 2017-10-24 | 歌尔科技有限公司 | Intelligence projection audio amplifier |
-
2017
- 2017-08-24 CN CN201721068371.9U patent/CN207150803U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107295440A (en) * | 2017-08-24 | 2017-10-24 | 歌尔科技有限公司 | Intelligence projection audio amplifier |
| CN107295440B (en) * | 2017-08-24 | 2023-07-21 | 歌尔科技有限公司 | Intelligent projection sound box |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20180327 Effective date of abandoning: 20230721 |
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