CN210691928U

CN210691928U - Lamp bead motion display device

Info

Publication number: CN210691928U
Application number: CN201922127387.8U
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-28
Filing date: 2019-11-25
Publication date: 2020-06-05
Anticipated expiration: 2029-11-25

Abstract

The utility model discloses a lamp pearl motion display device increases the resolver module on the basis of current lamp pearl display module, lamp pearl control module, power module and rotation axis, and power module mainly includes the motor, and this motor is directly or indirectly connected with the rotation axis, drives the rotation axis is rotatory. The rotary transformer module comprises a static electromagnetic module and a rotary electromagnetic module, wherein the static electromagnetic module comprises an exciting coil and a static iron core; the rotary electromagnetic module comprises an excitation coil and a rotary iron core; the exciting coil is electrified to generate a magnetic field in the static iron core, the exciting coil is in a turn-chain mode, voltage can be induced in the exciting coil, and electric energy of the exciting coil is transmitted to the lamp bead display module through the circuit. The utility model provides a rotary transformer module can carry the module of motion with the form of non-contact with the electric energy from static module to can realize the power supply to high-power lamp pearl motion display device.

Description

Lamp bead motion display device

Technical Field

The utility model relates to a rotatory display technology field of 3D, concretely relates to lamp pearl motion display device.

Background

With the development of advertisement industry and digital display industry in recent years, a novel holographic display device, namely a lamp bead motion display device, appears in the market, has a perspective display effect, and is very cool. At present, the mainstream holographic display shows that lamp beads rotate, a plurality of LED lamp strips capable of emitting light are rotated, the display of LEDs on the lamp strips is controlled, an image or animation is formed by the LED light by using the persistence of vision (POV) of human eyes, and the seen image is suspended in the air when the human eyes observe the image.

The lamp bead motion display device comprises a lamp bead display module (display screen), a lamp bead control module, a rotating shaft and a power module, wherein the power module drives the rotating shaft to rotate by using a direct current brushless motor (BLDC) generally. The rotating shaft is connected with the lamp bead display module and drives the lamp bead display module to rotate, so that the lamp bead can rotate. In addition, the brightness of the lamp bead display module is controlled by the lamp bead control module, so that the screen display effect is realized.

Current LED lamp pearl motion display device is mostly small-size "fan" structure, and the structure is little, and required electric power is few, and what its power supply structure adopted consequently is wireless charging mode, and the electric power of carrying is very limited, and inside does not have the iron core of magnetic conduction, and magnetic field effect is not good. However, if the display device is made larger, the required power is increased, and it is difficult to provide sufficient power by the conventional power transmission scheme.

SUMMERY OF THE UTILITY MODEL

To the weak point that exists in the above-mentioned problem, the utility model provides a lamp pearl motion display device.

The utility model discloses a lamp pearl motion display device, include: the lamp bead display module, the lamp bead control module, the rotary transformer module, the power module and the rotating shaft are arranged on the rotary transformer module; the power module is directly or indirectly connected with the rotating shaft and drives the rotating shaft to rotate; the lamp bead display module and the lamp bead control module are fixed with the rotating shaft and can rotate synchronously; the lamp bead control module is connected with the lamp bead display module through a circuit; the rotary transformer module comprises a static electromagnetic module and a rotary electromagnetic module, and the static electromagnetic module comprises an exciting coil and a static iron core; the rotating electromagnetic module at least comprises an excitation coil, and the rotating electromagnetic module and the rotating shaft are fixed together and can rotate synchronously; the exciting coil is electrified to generate a magnetic field in the static iron core, the exciting coil is linked in a turn mode, and if the magnetic field is an alternating magnetic field, voltage can be induced in the exciting coil according to the electromagnetic induction principle; the excitation coil is connected with the lamp bead control module through a circuit, and electric energy induced by the excitation coil is transmitted to the lamp bead module to supply power to the lamp bead module.

In the present invention, the rotary electromagnetic module of the rotary transformer module may have no iron core, and the excitation coil and the rotating shaft are directly fixed together and rotate synchronously; however, in some cases, the mechanical fixation of the exciter coil needs to be reinforced in order to avoid mechanical risks due to centrifugal forces. As a further improvement of the present invention, the rotating electromagnetic module in the rotary transformer module includes a rotating iron core, the rotating iron core is fixed to the excitation coil and the rotating shaft together and can rotate synchronously. The rotating iron core is close to and does not contact the static iron core, the exciting coil is electrified to generate a magnetic field in the static iron core and enter the rotating iron core, and the magnetic field can be used for linking the exciting coil in a turn mode and inducing voltage in the exciting coil. The excitation coil can be fixed on the rotary iron core and fixed together with the rotating shaft. The rotary iron core has a magnetic conduction function and also plays a role in mechanical protection for the magnet exciting coil.

The present invention provides a rotating shaft, a rotating core, a rotating shaft, a rotating coil, a static core, a rotating shaft, a. For example, the radial arrangement means that the exciting coil and the exciting coil are arranged at an inner ring and an outer ring, respectively, in a direction perpendicular to the rotating shaft, the exciting coil is usually arranged at the outer ring of the exciting coil, and correspondingly, the stationary core is arranged at the outer ring of the rotating core. There is a small air gap between the stationary core and the rotating core, in this example, the magnetic field generated by energizing the exciting coil enters and exits the stationary core and the rotating core in the radial direction in the small air gap.

The utility model discloses in, the exciting coil with the figure of excitation coil is not restricted, can be according to actual need and decide. For example, the excitation coil is made into one set, and the excitation coils can be made into two sets, and can be respectively arranged on the left side and the right side of the excitation coil and arranged axially.

As a further improvement, the lamp bead control module is provided with a rectifier circuit module. Generally, a power supply required by the lamp bead display module is low-voltage direct current, the voltage induced by the excitation coil is often alternating current, and the alternating current needs to be rectified into direct current through the rectifier circuit module. The rectifier circuit module can be integrated in the lamp bead control module, so that the space is saved.

As a further improvement of the utility model, be equipped with hollow structure on the rotation axis, hollow structure includes but not limited to fluting or trompil, connects excitation coil with lamp pearl control module's circuit is followed pass through among the hollow structure. For example, when a bearing or a shell is arranged between the excitation coil and the lamp bead control module and a circuit wire cannot be directly arranged, a local hollow or completely through center hole is formed in the rotating shaft, so that the problem of passage of the circuit wire can be well solved.

As a further improvement of the utility model, including the motor in the power module, the motor gives the rotation axis provides power. The magnetic circuit type of the motor includes, but is not limited to, a radial magnetic circuit structure motor and an axial magnetic circuit structure motor. The kind of the motor is not limited, and general permanent magnet synchronous motors, direct current brushless motors (BLDC), asynchronous motors, and direct current motors are included in the category of the motor.

As a further improvement of the present invention, the motor directly drives the rotation shaft to rotate. The motor in the power module comprises a stator assembly and a rotor assembly, wherein the rotor assembly is mounted on the rotating shaft and directly drives the rotating shaft to rotate. Further improved, the device also comprises a shell; the rotary transformer module and the motor share the same shell. In a further refinement, the stationary electromagnetic module of the resolver module and the stator assembly of the electric machine are both mounted within the housing.

As a further improvement of the utility model, the power module comprises a transmission mechanism therein. The motor in the power module does not directly drive the rotating shaft, but indirectly transmits power to the rotating shaft through the transmission mechanism. The transmission mechanism comprises belt transmission, chain transmission or gear transmission. For example, when the transmission mechanism is gear transmission, a gear in the transmission mechanism is arranged on the rotating shaft, and the driving force of the motor is transmitted to the rotating shaft through the gear mechanism to drive the rotating shaft to rotate. For another example, when the transmission mechanism is a belt transmission, a belt pulley in the transmission mechanism is disposed on the rotating shaft, and the driving force of the motor is transmitted to the rotating shaft through the belt mechanism to drive the rotating shaft to rotate.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a lamp pearl motion display device has integrateed the resolver module in the device, and wherein the excitation coil in the resolver module is fixed on the rotation axis, guarantees relatively static between excitation coil and the lamp pearl display module, and this excitation coil can respond to electric power, and is rotatory, so the resolver module can be carried the electric energy for the motion electromagnetic module from static electromagnetic module to can realize the power supply to large-scale lamp pearl motion display device.

The utility model discloses a lamp pearl motion display device can design the power of resolver module according to the power consumption on the lamp pearl motion display device, realizes high-power supply very easily. In addition, the output voltage of the output end of the transformer can be designed, the low voltage is directly output, and the direct current can be conveyed to the lamp beads through the rectifying circuit of the lamp bead control module.

Drawings

Fig. 1 is a schematic structural view of a lamp bead motion display device with radially arranged module coils of a rotary transformer according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a lamp bead motion display device externally arranged on a rotary transformer module according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a lamp bead motion display device with axially arranged rotary transformer module coils according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a lamp bead motion display device without a rotary iron core of a rotary transformer module according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a lamp bead motion display device with a belt transmission mechanism according to an embodiment of the present invention;

fig. 6 is an embodiment of the utility model relates to a lamp pearl display module's schematic structure diagram.

In the figure:

1. a lamp bead display module; 2. a lamp bead control module; 3. a motor stator core; 4. a motor stator winding; 5. a motor rotor assembly; 6. a bearing; 7. a rotating shaft; 8. a housing; 9. an exciting coil; 10. a field coil; 11. a stationary core; 12. rotating the iron core; 13. a hollow structure on the rotating shaft; 14. the connecting circuit is arranged between the excitation coil and the lamp bead control module; 15. a pulley in the transmission; 16. a belt in the transmission mechanism; 17. an independent motor.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The invention is described in further detail below with reference to the accompanying drawings:

as shown in fig. 1, the utility model provides an embodiment of a lamp pearl motion display device, for the lamp pearl motion display device schematic structure that the coil radially arranged in the resolver module. The lamp bead motion display device comprises a lamp bead display module 1 (a display screen), a lamp bead control module 2, a rotary transformer module, a power module and a rotating shaft;

the rotary transformer module comprises a static electromagnetic module and a rotary electromagnetic module, the static electromagnetic module comprises an exciting coil 9 and a static iron core 11, and the rotary electromagnetic module comprises an exciting coil 10 and a rotary iron core 12. In this embodiment, the number of the exciting coils 9 and the exciting coils 10 is 1, and the exciting coils 9 and the exciting coils 10 are all annular coils, wherein the exciting coils 9 are large annular coils, and the exciting coils 10 are small annular coils. The exciting coil 9 and the exciting coil 10 are arranged in a radial direction, that is, the exciting coil 9 and the exciting coil 10 are respectively arranged on an inner ring and an outer ring along a direction perpendicular to the rotating shaft 7, wherein the exciting coil 9 is sleeved on the outer ring of the exciting coil 10. Correspondingly, the stationary core 11 and the rotary core 12 are also arranged radially, the rotary core 12 being close to and not contacting the stationary core 11 with a small air gap therebetween. The exciting coil 9 and the stationary core 11 are fixed to the housing 8 and are stationary, and the exciting coil 10 and the rotary core 12 are fixed to the rotary shaft 7 and can rotate synchronously therewith. The rotary iron core 12 has a magnetic conductive function, and also has a mechanical supporting and protecting function for the excitation coil 10. The energizing coil 9 generates a magnetic field (shown by a dotted line) in the stationary core 11, and can radially penetrate through the small air gap into the rotary core 12, and the magnetic field can link the coil 10 and induce a voltage. Excitation coil 10 pass through circuit 14 with lamp pearl control module 2 links to each other, and the electric energy of excitation coil 10 response is carried for lamp pearl display module 1 and is its power supply. If the lamp bead display module 1 needs to be powered by direct current, a rectifying circuit module is arranged in the lamp bead control module 2 and can rectify the alternating current induced by the excitation coil 10 into direct current.

The lamp bead display module 1 and the lamp bead control module 2 are fixed together with the shaft extension end of the rotating shaft 7 and can rotate synchronously. The lamp bead control module 2 is connected with the lamp bead display module 1 through a circuit and can control the brightness of the lamp bead display module 1. In this embodiment, a bearing 6 and a housing 8 are arranged between the excitation coil 10 and the lamp bead control module 2, so that the circuit cannot directly pass through the bearing, so that a hollow structure 13 (a partially hollow center hole in the drawing) is arranged in the rotating shaft 7, and a circuit 14 connecting the excitation coil 10 and the lamp bead control module 2 passes through the hollow structure 13.

In this embodiment, the power module is directly driven by a motor, the motor type in the embodiment is a permanent magnet synchronous motor with a radial magnetic circuit structure, the motor comprises a motor stator assembly and a motor rotor assembly 5, and the stator assembly comprises a motor stator core 3 and a motor stator winding 4. The motor stator assembly and the motor rotor assembly 5 are arranged in a radial direction, that is, the direction of an air gap magnetic field between the motor stator assembly and the motor rotor assembly 5 is a radial direction. In this embodiment, the motor rotor assembly 5 is fixed with the rotating shaft 7, and can drive the rotating shaft 7 to rotate to provide power for the rotating shaft 7. In the embodiment, the motor and the transformer module in the power module share the same shell 8, and a left auxiliary bearing 6 and a right auxiliary bearing 6 are arranged between the shell 8 and the rotating shaft 7 for supporting.

As shown in fig. 2, the utility model provides an embodiment of a lamp pearl motion display device, for the external lamp pearl motion display device schematic structure of resolver module. The main difference between this embodiment and the embodiment shown in fig. 2 is that the resolver module is outside the housing 8 of the motor, and there is no bearing or housing between the excitation coil 10 and the lamp bead control module 2, and the connection circuit 14 can be directly arranged. Accordingly, it is not necessary to provide a hollow structure inside the rotary shaft 7.

As shown in fig. 3, the utility model provides an embodiment of a lamp pearl motion display device, the lamp pearl motion display device schematic structure that is arranged for coil axial in the resolver module. The main difference between this embodiment and the embodiment shown in fig. 2 is that the excitation coil 9 and the excitation coil 10 are arranged axially, i.e. both are arranged in the direction of the rotation axis 7, wherein the excitation coil 9 is on the left side of the excitation coil 10. Accordingly, the stationary core 11 and the rotary core 12 are also arranged in the direction of the rotary shaft 7, and the rotary core 12 is close to and does not contact the stationary core 11 with a small air gap therebetween. The exciting coil 9 and the stationary core 11 are fixed to the housing 8 and are stationary, and the exciting coil 10 and the rotary core 12 are fixed to the rotary shaft 7 and can rotate synchronously therewith. The energizing coil 9 generates a magnetic field (shown by a dotted line) in the stationary core 11 and passes through the small air gap in the axial direction into the rotary core 12, and the magnetic field can link the coil 10 and induce a voltage.

In this embodiment, the power module is directly driven by a motor, the motor type in the embodiment is a permanent magnet synchronous motor with an axial magnetic circuit structure, the motor comprises a motor stator assembly and a motor rotor assembly 5, and the stator assembly comprises a motor stator core 3 and a motor stator winding 4. The motor stator assembly and the motor rotor assembly 5 are axially arranged, that is, the direction of the air gap magnetic field between the motor stator assembly and the motor rotor assembly 5 is axial. In this embodiment, the motor rotor assembly 5 is fixed to the rotating shaft 7 and can drive the rotating shaft 7 to rotate.

As shown in fig. 4, the utility model provides an embodiment of a lamp pearl motion display device, for no rotating core's lamp pearl motion display device schematic structure among the resolver module. The main difference between this embodiment and the embodiment shown in fig. 2 is that in the rotating electromagnetic module there is only a stationary core 11, and no rotating core. A small air gap is provided in the stationary core 11 to pass a connecting wire or a support in the exciting coil 10. In this embodiment, there are a set of excitation coil 10 and two sets of excitation coils 9, and the two sets of excitation coils 9 are respectively disposed on the left and right sides of the excitation coil and are axially arranged. The excitation coil 10 is fixed with the rotating shaft 7 and can rotate synchronously with the rotating shaft, the excitation coil 9 is electrified to generate a magnetic field (shown by a dotted line in the figure) in the static iron core 11 and penetrates through the small air gap to enter the rotating iron core 12, and the magnetic field can turn the excitation coil 10 and induce voltage.

As shown in fig. 5, the utility model provides an embodiment of a lamp pearl motion display device, for the lamp pearl motion display device schematic structure who has belt drive mechanism. The main difference between this embodiment and the embodiment shown in fig. 2 is that the power module indirectly supplies power to the rotating shaft through the belt transmission mechanism for the motor. The power module comprises a belt pulley 15, a belt 16 and an independent motor 17, wherein the belt pulley 15 is installed on the rotating shaft 7, the belt 16 is connected with the rotating shaft 7 and the independent motor 17, and the power of the independent motor 17 is transmitted to the belt pulley 15 through the belt 16 and then transmitted to the rotating shaft 7 through the belt pulley 15. In this embodiment, the resolver module is a module having an independent structure, and the exciting coil 9 and the stationary core 11 in the resolver module are fixed to the inner wall of the housing 8.

Fig. 6 is the utility model relates to an embodiment discloses a lamp pearl display module 1's structural schematic diagram, lamp pearl display module 1's flabellum is 4 in the embodiment, has a LED lamp pearl on every flabellum. The lamp beads are driven by the rotating shaft 7 to rotate, and images can be displayed in the rotating plane of the fan blades under the control of the lamp bead control module 2.

The utility model has the advantages that:

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a lamp pearl motion display device which characterized in that includes: the lamp bead display module, the lamp bead control module, the rotary transformer module, the power module and the rotating shaft are arranged on the rotary transformer module;

the power module is directly or indirectly connected with the rotating shaft and drives the rotating shaft to rotate;

the lamp bead display module and the lamp bead control module are fixed with the rotating shaft and can rotate synchronously; the lamp bead control module is connected with the lamp bead display module through a circuit;

the rotary transformer module comprises a static electromagnetic module and a rotary electromagnetic module, and the static electromagnetic module comprises an exciting coil and a static iron core; the rotating electromagnetic module at least comprises an excitation coil, and the rotating electromagnetic module and the rotating shaft are fixed together and can rotate synchronously; the exciting coil is electrified to generate a magnetic field in the static iron core, and the exciting coil is linked in a turn;

the excitation coil is connected with the lamp bead control module through a circuit.

2. The lamp bead motion display device of claim 1, wherein the rotary electromagnetic module of the rotary transformer module comprises a rotary iron core, and the rotary iron core is fixed with the excitation coil and the rotating shaft and can rotate synchronously.

3. The lamp bead motion display device of claim 2, wherein the rotating iron core is close to and does not contact the stationary iron core, and the exciting coil is energized to generate a magnetic field in the stationary iron core and enter the rotating iron core, and the magnetic field can link the exciting coil.

4. The lamp bead motion display device of claim 1, wherein a rectifier circuit module is disposed in the lamp bead control module.

5. The lamp bead motion display device of claim 1, wherein a hollow structure is provided on the rotation shaft, and a circuit connecting the exciting coil and the lamp bead control module passes through the hollow structure.

6. The lamp bead motion display device of claim 1, wherein the power module includes a motor therein, the motor powering the rotating shaft.

7. The lamp bead motion display device of claim 6, wherein the motor directly drives the rotation shaft to rotate.

8. The lamp bead motion display device of claim 7, further comprising a housing; the rotary transformer module and the motor share the same shell.

9. The lamp bead motion display device of claim 6, wherein the power module includes a transmission mechanism therein.

10. The lamp bead motion display device of claim 9, wherein the transmission mechanism is a belt transmission, a chain transmission or a gear transmission.