Power supply socket, power receiving head, display device, power supply device and power supply method thereof

The present disclosure provides a power supply socket and a power receiving head. The socket includes a power supply socket housing, a conductive member, a switching element, and a control component. The conductive member is provided in the power supply socket housing and can be connected to a conductive portion on a power receiving head. The switching element is provided in the housing and has an output end and a control end, the output end of the switching element is connected to the conductive member. The control component is provided in the housing and connected to the control end of the switching element, and is configured to detect the power receiving head, and control the switching element to be turned on when the power receiving head is detected, and control the switching element to be turned off when the power receiving head is not detected.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a § 371 national phase application based on, and claims priority to, International Application No. PCT/CN2019/079279, filed Mar. 22, 2019, the contents of which being incorporated by reference in its entirety herein.

TECHNICAL FIELD

The present disclosure relates to display technologies, and in particular, to a power supply socket, a power receiving head, a power supply device, a power supply method, and a display device.

BACKGROUND

With advancements of display technologies in reducing the thickness and weight of display devices, more and more display devices are mounted by means of wall mounting.

A wall-mounted display device needs to be connected to an external power source through a power supply line during use or charging.

SUMMARY

An objective of the present disclosure is to provide a power supply socket, a power receiving head, a power supply device, a power supply method, and a display device.

According to a first aspect of the present disclosure, there is provided a power supply socket, including:

a power supply socket housing;

a conductive member provided in the power supply socket housing and connectable with a conductive portion on a power receiving head;

a switching element provided in the power supply socket housing and having an output end and a control end, wherein the output end of the switching element is connected to the conductive member; and

a control component provided in the power supply socket housing and connected to the control end of the switching element, and configured to detect the power receiving head, and control the switching element to be turned on when the control component detects the power receiving head, and control the switching element to be turned off when the control component does not detect the power receiving head.

In an exemplary embodiment of the present disclosure, the control component includes:

a light detector configured to output a first detection signal when detection light emitted from the power receiving head is received, and output a second detection signal the detection light emitted from the power receiving head is not detected;

a control circuit connected to an output end of the light detector and the control end of the switching element, and configured to control the switching element to be turned on according to the first detection signal, and control the switching element to be turned off according to the second detection signal.

In an exemplary embodiment of the present disclosure, the control component further includes:

a magnet provided in the power supply socket housing and configured to generate a magnetic field, wherein the power receiving head is configured for responding to the magnetic field and the magnetic field causes the power receiving head to emit the detection light.

In an exemplary embodiment of the present disclosure, the control component includes:

a limit switch provided in the power supply socket housing and configured to output a third detection signal when the power receiving head is detected, and output a fourth detection signal when the power receiving head is not detected; and

a control circuit connected to an output end of the limit switch and the control end of the switching element, and configured to control the switching element to be turned on according to the third detection signal, and control the switching element to be turned off according to the fourth detection signal.

In an exemplary embodiment of the present disclosure, the control component further includes:

a limit switch provided in the power supply socket housing and configured to output a third detection signal when the power receiving head is detected, and output a fourth detection signal when the power receiving head is not detected;

the control circuit is further connected to an output end of the limit switch, and is configured to control the switching element to be turned on according to the first detection signal and the third detection signal, and control the switching element to be turned off according to the second detection signal and the fourth detection signal.

In an exemplary embodiment of the present disclosure, the control circuit includes an AND gate circuit. A first input end of the AND gate circuit is configured to receive the first detection signal or the second detection signal. A second input end of the AND gate circuit is configured to receive the third detection signal or the fourth detection signal, and an output end of the AND gate circuit is connected to the control end of the switching element;

The AND gate circuit is configured to control the switching element to be turned on when receiving the first detection signal and the third detection signal simultaneously.

In an exemplary embodiment of the present disclosure, the power supply socket housing has a power supply socket slot for inserting the power receiving head;

the light detector, the conductive member, and the limit switch are disposed in the power supply socket slot.

In an exemplary embodiment of the present disclosure, the light detector is disposed on a side wall of the power supply socket slot.

In an exemplary embodiment of the present disclosure, when the power supply socket is mated with the power receiving head, the conductive member is located between the limit switch and the power receiving head.

According to a second aspect of the present disclosure, a power receiving head is provided for mating with the power supply socket described above. The power receiving head includes:

a power receiving head housing;

a conductive portion provided in the power receiving head housing, and connectable to a conductive member on the power supply socket.

In an exemplary embodiment of the present disclosure, when the power supply socket has a light detector, the power receiving head further includes:

a light emitter provided in the power receiving head housing and configured to emit detection light receivable by the light detector.

In an exemplary embodiment of the present disclosure, when the power supply socket has a magnet, the power receiving head further includes:

a magnetic field detector provided in the power receiving head housing and connected to the light emitter, and configured to control the light emitter to emit light when a magnetic field generated by the magnet is detected, and control the light emitter not to emit light when a magnetic field generated by the magnet is not detected.

In an exemplary embodiment of the present disclosure, when the power supply socket has a limit switch, the power receiving head is configured to be in contact with the limit switch.

In an exemplary embodiment of the present disclosure, when the power supply socket has a power supply socket slot, and the light detector is disposed on a side wall of the power supply socket slot, the power receiving head housing is at least partially insertable into the power supply socket slot; and the power receiving head housing has a mating surface that mates with a side wall of the power supply socket slot where the light detector is provided; the light emitter is disposed on the mating surface.

According to a third aspect of the present disclosure, a power supply device is provided, and the charging device includes:

the power supply socket described above;

the power receiving head described above;

a wire connected to a conductive portion of the power receiving head; and

a wire retractable mechanism configured to retract or release the wire, wherein the power receiving head is in contact with the power supply socket when the wire is released, so that the conductive portion is connected with the conductive member.

According to a fourth aspect of the present disclosure, a power supply method is provided, applied to the power supply device described above, and the power supply method includes:

controlling the wire retractable mechanism to release the wire when supplying of power is required, so that the conductive member of the power supply socket is connected to the conductive portion of the power receiving head;

controlling the wire retractable mechanism to retract the wire when supplying of power is not required, so that the conductive member of the power supply socket is separated from the conductive portion of the power receiving head.

According to a fifth aspect of the present disclosure, there is provided a display device including the power supply device described above.

According to a fifth aspect of the present disclosure, there is provided a picture screen including a display panel and the power supply device described above; the display panel has a light emitting surface, and a wire retractable mechanism of the power supply device is disposed on a side of the display panel away from the light emitting surface.

DETAILED DESCRIPTION

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the embodiments can be implemented in a variety of forms and should not be construed as being limited to the examples set forth herein; rather, these embodiments are provided so that The present disclosure will be more complete so as to convey the idea of the exemplary embodiments to those skilled in this art. The described features, structures, or characteristics in one or more embodiments may be combined in any suitable manner. In the following description, many specific details are provided to give a full understanding of the embodiments of the present disclosure.

When a structure is “on” another structure, it may mean that a structure is integrally formed on another structure, or that a structure is “directly” disposed on another structure, or that a structure is “indirectly” disposed on another structure through other structures. The terms “one” and “a” are used to indicate that there are one or more elements/components or the like; the terms “include”, “contain”, and “have” are used to indicate an open type meaning of including and means that there may be additional elements/components/etc. in addition to the listed elements/components/etc.

Reference numerals of main components in the figures are described as follows: power supply socket1; power supply socket housing11; power supply socket slot110; bottom of slot111; side wall112; conductive member12; switching element13; control component14; light detector141; control circuit142; AND gate circuit1421; magnet143; limit switch144; power receiving head2; power receiving head housing21; mating surface211; end surface212; wire3; wire retractable mechanism4; external power supply5; display panel6; support wall7; and connecting parts8.

An embodiment of the present disclosure provides a power supply socket1. As shown inFIG. 1, the power supply socket1includes a power supply socket housing11, a conductive member12, a switching element13, and a control component14.

The conductive member12is provided in the power supply housing11and can be connected to a conductive portion on a power receiving head. The switching element13is provided in the power supply housing11and has an output end and a control end. The output end of the switching element13is connected to the conductive member12. The control component14is provided in the power supply housing11and is connected to the control end of the switching element13for detecting the power receiving head2. The control switching element13is turned on when the control component14detects the power receiving head2, and the control switching element13is turned off when the control unit14does not detect the power receiving head2.

In the power supply socket1provided by the present disclosure, an input end of the switching element13is configured to be connected to an external power source5. When the control unit14detects the power receiving head, the control switching element13is turned on so that a voltage of the external power source5is applied to the conductive member12. At this time, if the conductive member12is connected to the conductive portion, the power receiving head is connected to the external power source5. When the control unit14does not detect the power receiving head2, the control switch is turned off so that the external power source5and the conductive member12are disconnected, thereby avoiding an electric shock caused by accidentally touching the conductive member12. Therefore, the power supply socket1of the present disclosure can realize power supplying when mated with the power receiving head2, and can stop providing electricity power when the conductive member12is exposed due to the separation with the power receiving head, thereby reducing the risk of accidental electric shock.

The following describes in detail the components of the power supply socket1provided in the embodiments of the present disclosure with reference to the drawings.

In an embodiment, as shown inFIG. 1, the power supply housing11may have a control cavity, and the switching element13may be disposed in the control cavity to avoid exposing the switching element13.

The conductive member12may be disposed on the surface of the power supply socket housing11or protrude from the surface of the power supply socket housing11to facilitate the connection and separation between the conductive portion and the conductive member12.

In an embodiment, as shown inFIG. 1, when the power supply socket housing11is installed, the upper portion of the conductive member12can be prevented from being blocked by the power supply socket housing11. As such, the conductive portion can realize the connection and separation with the conductive member12by moving up and down, so that the conduction and disconnection of the power supply socket1and the power receiving head2become easier and more convenient.

For example, as shown inFIG. 8, the power supply socket1can mate with the power receiving head2. As shown inFIG. 6, the power receiving head2may include a power receiving head housing21and a conductive portion22. The power receiving head housing21is configured to be disposed above the power supply socket1, and the conductive portion22is provided in the power receiving head housing21, and can be connected to the conductive member12in the power supply socket1under the action of gravity. As such, when the power receiving head housing21drives the conductive portion22to move downward under the action of gravity, the conductive portion22can move to contact and connect with the conductive member12; at this time, the control component14can detect the power receiving head2and control the switching element13to be turned on, and the power supply socket1supplies power to the power receiving head2. When the power receiving head housing21is moved upward by receiving an upward pulling force, the power receiving head housing21drives the conductive portion22to move upward to be separated from the conductive member12, so that the power supply socket1is separated from the power receiving head2are separated; at this time, the control component14controls the switching element13to be turned off, so that the power supply socket1stops providing electricity power.

The conductive member12may be in a strip shape, a sheet shape, a spiral wire shape, or other shapes. As long as the conductive member12can be effectively contacted with the conductive portion22, the shape of the conductive member12is not specifically limited in the present disclosure.

The may be one or more conductive members12, and each of the conductive members12is respectively connected to a power supply circuit of an external power source5. In one embodiment, the there is one conductive member12, and correspondingly, accordingly there is one conductive portion22on the power receiving head2. In another embodiment, as shown inFIG. 1, the number of the conductive members12is two and insulated from each other; accordingly, the number of the conductive portions22on the power receiving head2is also two and insulated from each other. The two conductive members12and the two conductive portions22can be connected in a one-to-one correspondence.

The switching element13is configured to be turned on or off under the control of the control component14, and an input end of the switching element13is configured to be connected to an external power source5. In an embodiment, the switching element13may be a relay. The relay can be a mechanical relay (such as an electromagnetic relay or a reed relay), a solid state relay, or other types of relays. In another embodiment, the switching element13may be a semiconductor switch. The semiconductor switch may be a triode, an insulated gate bipolar transistor, or other semiconductor switches.

The control component14may include a detection device and a control circuit142. The detection device is connected to the input end of the control circuit142, and the output end of the control circuit142is connected to the control end of the switching element13. The detection device is configured to detect the power receiving head2and send the detection result to the control circuit142. The control circuit142controls the switching element13to be turned on or off according to the received detection result. There may be one or more detection devices. When there are more than one detection devices, the types of the plurality of detection devices may be the same or different, and the present disclosure does not specifically limit this.

For example, in an embodiment, the control component14may include a control circuit142and a light detector141used as the detection device. The light detector141is configured to output a first detection signal when receiving the detection light emitted from the power receiving head2, and is configured to output a second detection signal when not receiving the detection light emitted from the power receiving head2. The control circuit142is connected to the output end of the light detector141and the control end of the switching element13, and is configured to control the switching element13to be turned on according to the first detection signal, and control the switching element13to be turned off according to the second detection signal. As such, the control component14can detect the power receiving head2by detecting the detection light. Compared with the solution for detecting the power receiving head2by detecting whether the power receiving head2blocks the ambient light, the solution of the present disclosure can not only get rid of the dependence on the ambient light, but also reduce the danger that the power supply socket1is powered on caused by accidentally blocking the ambient light.

It can be understood that the power receiving head2mated with the power supply socket1may have a function of emitting detection light. As shown inFIG. 6, the power receiving head2may further include a light emitter23provided in the power receiving head housing21and configured to emit detection light that can be received by the light detector141. The light emitting device23may be a light emitting device of various types, as long as the emitted light can be detected by the light detector141.

In one embodiment, the light detector141includes an infrared light receiver for receiving infrared rays. Correspondingly, the light emitter23may be an infrared transmitter for emitting infrared rays as the detection light. In another embodiment, the light detector141includes a laser receiver for receiving laser light. Correspondingly, the light emitter23may be a laser transmitter for emitting laser light as the detection light. Of course, the detection light may also be visible light or light of other types. Correspondingly, the light emitter23is provided as a light emitting device configured for emitting the detection light, and the light detector141is also correspondingly provided as a light detection device configured for receiving the detection light. The present disclosure does not specifically limit this.

The light detector141may include a photoelectric element for converting a light signal of the detection light into an electrical signal. When the detection light emitted by the power receiving head2is irradiated to the photoelectric element, the photoelectric element will generate a detection current or a detection voltage, so that the light detector141emits the first detection signal. When the photoelectric element is not irradiated with the detection light emitted from the power receiving head, the photoelectric element will not generate the detection current or the detection voltage, so that the light detector142outputs the second detection signal. The photoelectric element may include a photoresistor, a PIN photodiode, or other photoelectric elements, which are not specifically limited in the present disclosure.

According to an exemplary embodiment, as shown inFIG. 1, the control component14may further include a magnet143provided in the power supply housing11to generate a magnetic field. The power receiving head2can respond to the magnetic field and the magnetic field can cause the power receiving head2to emit the detection light. The magnet143may be a magnet, an electromagnet, or other devices configured for generating the magnetic field, which is not particularly limited in the present disclosure.

It can be understood that the power receiving head2mated with the power supply socket1needs to have a function of responding to the magnetic field and emitting the detection light when the magnetic field is detected. As shown inFIGS. 6 and 7, the power receiving head2may further include a magnetic field detector24. The magnetic field detector24is provided in the power receiving head housing21and is connected to the light emitter23. The magnetic field detector24is configured to control the light emitter23to emit light upon detection of the magnetic field generated by the magnet143, and control the light emitter23not to emit light if the magnetic field generated by the magnet143is not detected. In this way, when the power receiving head2is far away from the power supply socket1, the magnetic field detector24cannot detect the magnetic field generated by the magnet143, so the light emitter23does not emit light, thereby reducing the power consumption and extending the service life of the light emitter23. When the power receiving head2is close to the power supply socket1, the magnetic field detector24can control the light emitter23to emit light after detecting the magnetic field of the magnet143, thereby ensuring that the light emitter23can provide the detection light in time.

In one embodiment, the magnetic field detector24outputs a light emitting signal to the light emitter23when the detected magnetic field is greater than a set value, and the light emitter23emits light in response to the light emitting signal; the magnetic field detector24does not send the light emitting signal to the light emitter23when the detected magnetic field is not greater than the set value, and the light emitter23does not emit light because the light emitting signal is not received. The magnetic field detector24may include a magnetic switch, a Hall sensor, or other devices configured for detecting the magnetic field, which is not specifically limited in the present disclosure.

In another embodiment, as shown inFIG. 1andFIG. 4(the switching element is not shown), the control component14may include a control circuit142and a limit switch144used as the detection device. The limit switch144is disposed in the power supply housing11, and is configured to output a third detection signal when the power receiving head2is detected, and output a fourth detection signal when the power receiving head2is not detected. The control circuit142is connected to the output end of the limit switch144and the control end of the switching element13, and is configured to control the switching element13to be turned on according to the third detection signal, and is configured to control the switching element13to be turned off according to the fourth detection signal.

The limit switch144may be a contact limit switch. For example, the limit switch144may include a contact head and a switch circuit. A micro switch is provided on the switch circuit, and the contact head is connected to the micro switch. When the power receiving head2moves to contact with the contact head, the contact head will make the micro switch conductive, so that the switch circuit outputs the third detection signal. When the power receiving head is not in contact with the contact head, the micro switch will remain in the turn-off state, causing the switch circuit to output a fourth detection signal. Of course, the limit switch144may also be a contactless limit switch, such as a reed limit switch, a photoelectric limit switch, an inductive limit switch or other types of limit switches, which is not specifically limited by the present disclosure.

In another embodiment, the control component14may include a control circuit142, a light detector141used as the detection device, and a limit switch144used as the detection device. The light detector141is configured to output a first detection signal when receiving the detection light emitted from the power receiving head2, and is configured to output a second detection signal when not receiving the detection light emitted from the power receiving head2. The limit switch144is disposed in the power supply housing11, and is configured to output a third detection signal when the power receiving head2is detected, and output a fourth detection signal when the power receiving head2is not detected. The input end of the control circuit142is connected to the output end of the light detector141and the output end of the limit switch144, and the output end of the control circuit142is connected to the control end of the switching element13. The control circuit142is configured to control the switching element13to be turned on according to the first detection signal and the third detection signal, and control the switching element13to be turned off according to the second detection signal and the fourth detection signal.

The control circuit142may control the switching element13to be turned on when receiving the first detection signal and the third detection signal, and control the switching element13to be turned off under other conditions. As such, the conduction of the switching element13needs to satisfy two control conditions: the light detector141detects the detection light and the limit switch144detects the power receiving head2. In this way, the power supply socket1can be prevented from being conducted due to the ambient light or accidental pressing of the limit switch144, thereby improving the safety of the power supply socket1.

In a further exemplary embodiment, as shown inFIG. 2, the control circuit142may include an AND gate circuit1421. A first input end of the AND gate circuit1421is configured to receive the first detection signal or the second detection signal, a second input end of the AND gate circuit1421is configured to receive the third detection signal or the fourth detection signal, and an output end of the AND gate circuit1421is connected to the control end of the switching element13. The AND gate circuit1421is configured to control the switching element13to be turned on when receiving the first detection signal and the third detection signal at the same time.

For example, the first detection signal and the third detection signal may be at a high level (logic 1), and the second signal and the fourth signal may be at a low level (logic 0). Only when both input ends of the AND gate circuit1421are 1, a high level control signal (logic 1) is output; otherwise, a low level control signal (logic 0) is output. The high-level control signal (logic 1) is configured to control the switching element13to be turned on, and the low-level control signal (logic 0) is configured to control the switching element13to be turned off In this embodiment, the control circuit142does not need to use a controller such as an MCU (micro control unit), a CPU (central processing unit), an FPGA (field programmable gate array), or a SOC (On-Chip System). The circuit structure is simple and the cost of the power supply socket1is reduced.

It can be understood that the present disclosure provides embodiments with different detection devices, that is, the detection device is a combination of the light detector141and the limit switch144, the detection device is the light detector141and the detection device is the limit switch144. The above embodiment is merely an example for explaining the detection device and the control component14. The detection device may also be other types of detection devices, such as a magnetic field detector, an ultrasonic detector, or a combination of a variety of different types of devices, as long as it can realize the detection of the power receiving head.

In an embodiment, as shown inFIG. 1andFIG. 5, the power supply socket housing11may have a power supply socket slot110to enable the power receiving head2to be inserted. The light detector141, the conductive member12, and the limiter switch144are disposed in the power supply socket slot110and are less likely to be damaged under the protection of the power supply socket housing11. Moreover, the ambient light irradiated on the light detector141will be less or weaker, which reduces the possibility of the light detector141outputting the first control signal due to the ambient light. The limit switch144does not protrude from the outer contour of the power supply housing11, and is not easily pressed by a foreign object to output the third control signal. The conductive member12does not protrude from the outer contour of the power supply housing11, so that it is more difficult for foreign objects to touch the conductive member12to cause the risk of electric shock. Therefore, the safety of the power supply socket1is further improved.

In an embodiment, as shown inFIG. 3, the power supply seat slot110is a trapezoidal slot, and the size of the slot opening is larger than the slot bottom111. When the power supply socket1is installed, as shown inFIG. 8, the slot opening of the power supply socket1can be upward and the slot bottom111of the power supply socket1can be down. As such, the power receiving head2can be inserted into the power supply slot under the action of gravity.

In an embodiment, as shown inFIG. 3, the power supply socket slot110may include a slot opening, a slot bottom111disposed opposite the slot opening, and side walls112connecting the slot opening and the slot bottom111. The power supply socket slot110further includes an open side, which is connected to the slot opening, the side walls112and the slot bottom111, and the open side can allow the power receiving head2to enter at least partially into the power supply socket slot110in a posture of fitting with the power supply socket slot110. In another embodiment, when the power receiving head2is inserted into the power supply socket slot110, an orthographic projection of the portion of the power receiving head2inserted into the power supply socket slot110on the plane on which the open side is located within the open side. When the power supply socket slot110is installed, you can make the slot opening upward and the open side horizontally outward. As such, the power supply socket slot110includes two openings (i.e., the slot opening and the open side) for the power receiving head2to move in, which can make the mating process between the power receiving head2and the power supply socket slot110more flexible.

In one embodiment, as shown inFIGS. 3 and 4, the light detector141is disposed on the sidewall112of the power supply socket slot110. As such, the detection light needs to be incident into the light detector141in a direction perpendicular to or approximately perpendicular to the direction that the power receiving head2is inserted, so that the light detector141can better position the insertion depth of the power receiving head2. Furthermore, the number of the side walls112of the power supply socket1is more than one, and the light detector141is disposed on the side wall112disposed opposite to the open side.

It can be understood that the power receiving head housing21that is mated with the power supply socket1can be at least partially insertable into the power supply socket slot110. As shown inFIG. 6, the power receiving head housing21has a mating surface211that mates with a side wall112of the power supply socket slot110where the light detector141is provided. The light emitter23is disposed on the mating surface211, so that the detection light emitted by the light emitter23can be irradiated onto the light detector141.

In an embodiment, as shown inFIG. 1, the magnet143is disposed in the power supply socket housing11and is located below the power supply socket slot110. As such, the magnet143is disposed in a direction in which the power receiving head2is inserted into the power supply socket slot110. The strength of the magnetic field detected by the magnetic field detector24increases as the depth of the power receiving head2being inserted into the power supply socket slot110increases, which improves the stability of the magnetic field detection24controlling the light emitting of the light emitter23according to the magnetic field, and improves the power supply stability of the power supply socket1. Correspondingly, as shown inFIG. 6, the power receiving head2has an end surface212that mates with the slot bottom111, and the magnetic field detector24is disposed near the end surface212.

In one embodiment, as shown inFIG. 5, the conductive member12is disposed on the limit switch144. When the power supply socket1and the power receiving head2mate with each other, the conductive member12is located between the limit switch144and the power receiving head2. For example, the conductive member12is disposed on the contact head of the limit switch144. As such, the power receiving head2transmits the pressure to the limit switch144through the conductive portion22and the conductive member12to ensure that when the limit switch144is turned on, the conductive portion22and the conductive member12are in a compressed state. When the contact failure occurs between the conductive portion22and the conductive member12because the conductive portion22and the conductive member12are not tightly compressed, the power receiving head2cannot effectively press the limit switch144, so that the limit switch144is not turned on, and the power supply socket1is in a power-off state. The danger caused by the conductive portion22and the conductive member12conducting electricity when the contact is poor is avoided.

Of course, the conductive member12may also be disposed at other positions, for example, directly or indirectly on the power supply socket housing11, as long as the conductive member12can be connected to the conductive portion22of the power receiving head2.

The present disclosure also provides a power receiving head2for mating with the power supply socket1described in the above embodiments. As shown inFIGS. 6 and 7, the power receiving head2includes a power receiving head housing21and a conductive portion22. The conductive portion22is provided on the power receiving head housing21and can be connected to the conductive member12on the power supply socket1.

In an embodiment, the power receiving head housing21may be disposed above the power supply socket1so as to move downward to mate with the power supply socket1under the action of gravity, so that the conductive portion22can realize the connection with the conductive member12by means of the gravity of the power receiving head housing21. Of course, the power receiving head housing21can also achieve movement to the power supply socket1and mate with the power supply socket1by means of other forces, for example, a magnetic attraction, an air pressure, and the like.

In an embodiment, as shown inFIG. 6andFIG. 7, when the power supply socket1has the light detector141, the power receiving head2further includes the light emitter23, and the light emitter23is provided in the power receiving head housing21and configured to emit the detection light which can be received by the light detector141.

In an embodiment, as shown inFIG. 6andFIG. 7, when the power supply socket1has the magnet143, the power receiving head2further includes the magnetic field detector24. The magnetic field detector24is provided in the power receiving head housing21and connected to the light emitter23and configured to control the light emitter23to emit light when the magnetic field generated by the magnet143is detected, and control the light emitter23not to emit light when the magnetic field generated by the magnet143is not detected.

In one embodiment, when the power supply socket1has the limit switch144, the power receiving head2is configured to be in contact with the limit switch144so that the limit switch144can detect the power receiving head2. Of course, when the limit switch is the contactless limit switch, the power receiving head2may be configured for moving into the detection range of the limit switch, so that the limit switch144can detect the power receiving head2.

In an embodiment, as shown inFIGS. 6 and 7, when the power supply socket1has the power supply socket slot110and the light detector141is disposed on the side wall112of the power supply socket slot110, the power receiving head housing21can at least partially be inserted into the power receiving socket slot110. The power receiving head housing21has the mating surface211that mate with the side wall112of the power supply socket slot110where the light detector141is provided. The light emitter23is disposed on the mating surface211.

The specific details and beneficial effects of the power receiving head2provided by the present disclosure have been described in detail in the above-mentioned embodiments of the power supply socket1, and the present disclosure will not repeat them here.

The present disclosure also provides a power supply device. As shown inFIG. 8, the charging device includes a power supply socket1, a power receiving head2, a wire3, and a wire retractable mechanism4.

The power supply socket1is the power supply socket1described in the above embodiments of the power supply socket1. The power receiving head2is the power receiving head2described in the above embodiment of the power receiving head2. The wire3is connected to the conductive portion22of the power receiving head2. The wire retractable mechanism4is used for retracting or releasing the wire3. When the wire3is released, the power receiving head2can contact the power supply socket1, so that the conductive portion22is connected to the conductive member12.

As such, when the supplying of power is required, the wire retractable mechanism4is controlled to releases the wire3, the power receiving head2can be moved to mate with the power supply socket1, and the conductive member12of the power supply socket1is connected to the conductive portion22of the power receiving head2. At this time, the power supply socket1detects the power receiving head2and the internal switching element13is turned on, so that the wire3is electrically connected to the external power source5through the power receiving head2and the power supply socket1. When supplying of power is not required, the wire retractable mechanism4is controlled to receive the wire3, the power receiving head2moves under the pulling force of the wire3, the conductive member12of the power supply socket1is separated from the conductive portion22of the power receiving head2, and the wire3is not connected to the external power source5. At this time, the wire3can be housed in the wire retractable mechanism4to avoid exposure to the environment to affect the layout.

Therefore, the purpose of controlling the connection or disconnection between the control wire3and the external power source5is achieved by controlling the wire retractable mechanism4to receive or release the wire3. The power supply socket1of the power supply device of the present disclosure is the power supply socket1described in the above embodiments of the power supply socket1. The power receiving head2is the power receiving head2described in the above embodiments of the power receiving head2, and therefore has the same beneficial effects. The present disclosure does not specifically limit this.

In an embodiment, the wire3is connected to the conductive portion22of the power receiving head2and makes the power receiving head2to be located above the power supply socket1. When the wire retractable mechanism4releases the wire3, the power receiving head2is in contact with the power supply socket1under the action of the gravity, so that the conductive portion22is connected to the conductive member12.

In an embodiment, as shown inFIG. 8, the wire retractable mechanism4may include a winding roll and a motor, and the wire3is at least partially wound on the winding roll. When the motor drives the winding roll to rotate, the winding roll can retract (i.e., accommodate) or release the wires3.

The power supply device can directly provide electricity to electronic devices such as televisions, display screens, and electronic picture screens, and can also charge batteries of electronic devices such as televisions, display screens, and electronic picture screens.

In one embodiment, the power supply device is configured to charge the battery. The power supply device may further include a charging component, a charging detection component, and a charging control component14. The charging component is connected to the battery and the wire3for charging the battery with the external power source5. The charging detection component is configured to detect the battery level and send the detection result to the charging control component14. The charging control component14is connected to the charging detection component and the wire retractable mechanism4for releasing the wire3when the battery level is lower than the first set value, so that the power receiving head2mates with the charging base, so that the external power source5charges the battery; and the charging control component14is further configured to receive the wire3when the battery level is higher than the second set value, so that the power receiving head2is separated from the charging base to avoid overcharging the battery. As such, the power supply device can automatically charge the battery.

The present disclosure also provides a power supply method, which is applied to the above-mentioned power supply device. The power supply method includes the following steps:

controlling the wire retractable mechanism4to release the wire3when supplying of power is required, so that the conductive member12of the power supply socket1is connected to the conductive portion22of the power receiving head2;

controlling the wire retractable mechanism4to retract the wire3when supplying of power is not required, so that the conductive member12of the power supply socket1is separated from the conductive portion22of the power receiving head2.

The principle and beneficial effects of the power supply method provided by the present disclosure have been described in detail in the above-mentioned embodiments of the power supply device, and the present disclosure will not repeat them here.

The present disclosure also provides a display device including the power supply device described in the above embodiment of the power supply device. The display device may be an electronic picture screen, a wall-mounted television, a wall-mounted display, an electronic billboard, or other display devices, which are not specifically limited in The present disclosure.

The power supply device of the display device of the present disclosure is the same as the power supply device described in the embodiments of the power supply device described above, and thus has the same beneficial effects, which will not be repeated here.

The present disclosure also provides a picture screen, as shown inFIG. 9andFIG. 10. The picture screen includes a display panel6and the power supply device described in the foregoing power supply device embodiments. The display panel6has a light emitting surface and the wire retractable mechanism4of the power supply device is disposed on a side of the display panel6away from the light emitting surface. As such, the wire retractable mechanism4is disposed behind the display panel6and is blocked by the display panel6without affecting the layout of the picture screen. This prevents the wire retractable mechanism4from blocking the display panel6and reducing the display effect and affecting appearance of the picture screen. The power supply device for the picture screen of the present disclosure is the same as the power supply device described in the embodiments of the power supply device described above, and therefore has the same beneficial effects, which will not be repeated here.

In an embodiment, as shown inFIG. 9andFIG. 10, after the wire retractable mechanism4receives the wire3, the power receiving head2moves to a position close to the wire retractable mechanism4under the pulling force of the wire3. Orthographic projections of the wire retractable mechanism4and the power receiving head2on the display panel6are within the display panel6. As such, when the power supply device does not provide electricity power to the display panel6, the display panel6can completely shield the wire retractable mechanism4, the wire3, and the power receiving head2, thereby avoiding affecting the installation effect of the screen by the wire retractable mechanism4, the wire3, or the power receiving head2.

In one embodiment, as shown inFIG. 10, the screen can be mounted on the support wall7in a wall-mounted manner through the connecting member8. The connecting member8may be a hanger, a fastening bolt, or other feasible connecting components; the supporting wall7may be a wall, a side wall of a cabinet, a screen, or other structures that can be used to support a picture screen. When the picture screen is mounted on the support wall7, the power supply socket1can be disposed on the support wall7and below the wire retractable mechanism4so that the power receiving head2can move to the power supply socket1under the action of gravity and finally mates with the power supply socket1.

In one embodiment, the picture screen further includes a housing, the display panel6may be disposed inside the housing, and the wire retractable mechanism4may be disposed outside the housing. According to an embodiment, when the picture screen is fixed on the support wall7, the wire retractable mechanism4is located at the center of the housing or near the center of the housing along the horizontal direction to improve the stability of the picture screen.

It should be understood that the present disclosure is not limited to the detailed structure and arrangement of the components proposed by the present specification. The present disclosure is capable of having other embodiments, and be carried out and implemented in various manners. The foregoing variations and modifications fall within the scope of the present disclosure. It should be understood that the present disclosure disclosed and defined by the present specification extends to all alternative combinations of two or more of the individual features apparent or recited herein and/or in the drawings. All of these various combinations constitute a number of alternative aspects of the present disclosure. The embodiments described in the present specification are illustrative of the best mode for carrying out the present disclosure and will enable those skilled in the art to utilize the present disclosure.