Sun shield capable of lightening LED through wireless power supply

Abstract

The utility model relates to a sun visor with a wireless power supply lighting LED, which comprises a sun visor body, the sun visor body is rotatably connected with a vehicle body ceiling through a sun visor rotating shaft, and the sun visor body is provided with a mirror, a mirror cover capable of being opened or closed and an LED lamp panel; a radio transmitting device and a first coil which are electrically connected are arranged on the ceiling of the vehicle body, a radio receiving device and a second coil which are electrically connected are arranged in the sun shield body, and the output end of the radio receiving device is electrically connected to the power supply end of the LED lamp panel; when the sun shield is in the folded state, radio emission of the first coil is closed; when the sun shield body is in an unfolded state, radio emission of the first coil is turned on, electric energy is transmitted to the second coil through electromagnetic coupling, and meanwhile, the LED lamp panel can be controlled to be turned on or turned off by opening or closing the mirror cover. The wireless power supply device has the advantages that wireless power supply of the sun visor with the LED lighting function can be achieved, the service life of the sun visor is prolonged, and the stability of the sun visor is improved.

Description

Technical Field

[0001] The present application relates to the technical field of automobile interior decoration parts, and in particular to a sun visor with wireless power supply and LED lighting. Background Art

[0002] Traditional car sun visors play a vital role in vehicle interiors, effectively blocking sunlight and enhancing interior comfort while also enhancing the vehicle's aesthetics. In recent years, as consumers demand greater comfort and intelligence in vehicle interiors, sun visors, as a crucial component of vehicle interiors, have gradually integrated more features, such as LED lighting, to enhance the user experience.

[0003] To achieve this function, existing sun visors with LED lighting typically require two power cables, one positive and one negative, to be inserted into the visor's hollow rotating shaft to power the LED control circuit and LED light panel inside the visor. This power supply method requires pre-routing the power cables inside the visor's hollow rotating shaft and ensuring that these cables are properly connected to the external power source and the LED light panel inside the visor. Furthermore, during installation, the power cables must be precisely positioned in the visor to prevent them from breaking or being damaged during the unfolding and folding process, ensuring the visor functions properly.

[0004] During the automobile manufacturing process, although the existing power line layout technology can provide power to the LED control circuit and LED light panel in the sun visor, due to the special structure of the rotating shaft, the wiring is complicated and prone to wear or breakage during the folding process, thus affecting the service life and stability of the sun visor. Utility Model Content

[0005] In order to realize wireless power supply of a sun visor with LED lighting function and improve the service life and stability of the sun visor, the present application provides a sun visor with wireless power supply to light up LED.

[0006] The present application provides a sun visor with wireless power supply to light up LEDs, which adopts the following technical solutions:

[0007] A sun visor with wireless power supply and LED lighting, comprising a sun visor body, the sun visor body being rotatably connected to a vehicle body roof via a sun visor rotating shaft, the sun visor body being provided with a mirror, and the sun visor body being provided with a mirror cover that can be pulled open or closed, and the sun visor body being further provided with an LED light board; an electrically connected radio transmitting device and a first coil are provided on the vehicle body roof, an electrically connected radio receiving device and a second coil are provided in the sun visor body, and the output end of the radio receiving device is electrically connected to the power supply end of the LED light board; when the sun visor body is in a folded state, the second coil is away from the first coil, and the second coil and the first coil are in a non-coupled state; when the sun visor body is in an unfolded state, the first coil and the second coil are in a coupled state.

[0008] By adopting the above technical solution, when the sun visor is in a folded state, the second coil cannot obtain the electromagnetic wave energy transmitted by the first coil. At this time, the radio receiving device cannot receive the electric energy transmitted by the radio transmitting device, and the LED light board cannot emit light; when the sun visor is in an unfolded state, the first coil wirelessly transmits electric energy to the second coil through the magnetic lines of force, and the second coil can obtain the electromagnetic wave energy transmitted by the first coil, that is, the radio receiving device can receive the electric energy transmitted by the radio transmitting device, so that the LED light board can emit light in a controlled manner, which can solve the assembly problem of the existing sun visor LED wires that must pass through the sun visor rotating shaft, thereby realizing wireless power supply.

[0009] Preferably, the radio transmitting device includes a power input protection circuit, a power full-bridge circuit, and a PWM modulation / demodulation and transmitting circuit electrically connected in sequence, the voltage output end of the vehicle power supply is electrically connected to the input end of the power input protection circuit, and the PWM modulation / demodulation and transmitting circuit is electrically connected to the first coil.

[0010] By adopting the above technical solution, the voltage of the vehicle power input can be protected by setting up a power input protection circuit to prevent abnormal conditions such as overcurrent and overvoltage from damaging subsequent circuits; the power full-bridge circuit can be used to convert the input voltage to provide the required voltage signal for the PWM modulation / demodulation and transmission circuit; the PWM modulation / demodulation and transmission circuit is used to perform PWM modulation / demodulation on the voltage signal output by the power full-bridge circuit to form a modulated / demodulated signal, and transmit it through the first coil to achieve efficient and stable radio transmission.

[0011] Preferably, the radio receiving device includes a PWM modulation / demodulation and receiving circuit, a protection and rectification circuit and an LED control circuit electrically connected in sequence, the second coil and the PWM modulation / demodulation and receiving circuit, and the output end of the LED control circuit is electrically connected to the power supply end of the LED light board.

[0012] By adopting the above technical solution, the PWM modulation / demodulation and receiving circuit can receive radio signals through the second coil, and the voltage output by the PWM modulation / demodulation and receiving circuit is protected and rectified by the protection and rectification circuit, so as to control the switching and brightness of the LED light board through the LED control circuit.

[0013] Preferably, the radio transmitting device further includes a first switching component, through which the power full-bridge circuit is electrically connected to the PWM modulation / demodulation and transmitting circuit; the radio receiving device further includes a second switching component, through which the protection and rectification circuit is electrically connected to the LED control circuit; a triggering component is provided on the mirror cover, and the triggering component is used to trigger the first switching component and the second switching component.

[0014] By adopting the above technical solution, when the sun visor body is in the folded state, the trigger member approaches the first switch element, triggering the first switch element and de-energizing the PWM modulation / demodulation and transmission circuits, thereby stopping radio transmission. When the sun visor body is in the unfolded state, the trigger member moves away from the first switch element, de-activating the first switch element, energizing the PWM modulation / demodulation and transmission circuits and re-activating radio transmission. If the mirror cover is in the closed state, the trigger member moves away from the second switch element, de-activating the second switch element and de-energizing the LED control circuit. When the mirror cover is opened while the sun visor body is in the unfolded state, the trigger member moves toward the second element, triggering the second switch element and energizing the LED control circuit.

[0015] Preferably, the first switching component and the second switching component are both configured as Hall sensors or magnetically controlled reed switches, and the triggering element is configured as a magnet.

[0016] By adopting the above technical solution, non-contact operation of triggering the switch action through the magnetic field is achieved, physical wear and failure rate are reduced, and the stability and reliability of the entire device are improved.

[0017] Preferably, the sun visor body includes a sun visor frame and a covering layer, a filler is filled between the sun visor frame and the covering layer, and the second coil is arranged between the covering layer and the sun visor rotation axis.

[0018] By adopting the above technical solution, the second coil is protected to a certain extent.

[0019] Preferably, the LED light panel is arranged on the back side of the mirror away from the mirror cover.

[0020] By adopting the above technical solution, since the light source is hidden on the back side of the mirror, direct exposure to the eyes is avoided, thereby reducing glare and allowing the user to use the mirror in a more comfortable environment.

[0021] Preferably, the LED light board includes an LED lamp and a light guide plate, and the LED lamp is arranged in the light guide plate.

[0022] By adopting the above technical solution, the light guide plate can focus and guide the light of the LED lamp, so that the light is more concentrated on the area that needs to be illuminated, thereby improving the overall brightness. At the same time, due to the uniform distribution of light, the brightness is more balanced, avoiding the situation of excessive brightness or darkness in some areas.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The radio transmitter module and the second coil work together to wirelessly power the LED control circuit and LED light panel inside the sun visor. This eliminates the need to insert a power cable into the hollow rotating shaft of the sun visor, reduces wiring complexity and potential wear or breakage, and improves the service life and stability of the sun visor.

[0025] 2. When the sun visor is folded or unfolded, the working state of the radio transmission module is automatically controlled through the interaction between the magnet inside the sun visor and the Hall sensor or magnetically controlled reed switch on the inside of the ceiling, avoiding the continuous emission of radio waves when not in use, saving energy and reducing unnecessary power loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural diagram of the sun visor body in a folded state in an embodiment of the present application;

[0027] Figure 2 This is a structural diagram of the sun visor body in the expanded state in an embodiment of the present application;

[0028] Figure 3 It is a principle diagram in an embodiment of the present application.

[0029] Figure numerals: 1. Radio transmitter; 2. First coil; 3. Radio receiver; 4. Second coil; 5. Sun visor body; 51. Sun visor rotation axis; 52. Sun visor frame; 53. Covering layer; 54. Filler; 6. Interior ceiling; 7. Mirror; 8. Mirror cover; 81. Trigger; 9. LED light board. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-3 This application is described in further detail.

[0031] The embodiment of the present application discloses a sun visor with wireless power supply to light up LEDs.

[0032] Reference Figure 1 、 Figure 2 and Figure 3 A sun visor with wirelessly powered LED lighting includes a sun visor body 5. A sun visor rotation shaft 51 is provided on the side of the sun visor body 5 close to the vehicle body ceiling. The vehicle body ceiling is rotatably connected to the sun visor body 5 via the sun visor rotation shaft 51. The sun visor body 5 is provided with a mirror 7 and a mirror cover 8 movably provided on the sun visor body 5, and an LED light board 9 is provided on the back of the mirror 7. An electrically connected radio transmitter 1 and a first coil 2 are provided on the side of the vehicle body ceiling close to the sun visor body 5. An electrically connected radio receiver 3 and a second coil 4 are provided inside the sun visor body 5. The output end of the radio receiver 3 is electrically connected to the power supply end of the LED light board 9. When the sun visor body 5 is rotated and folded around the sun visor rotating shaft 51 to a position that fits the surface of the vehicle ceiling 6, the sun visor body 5 is in an unfolded state, and the second coil 4 is close to the first coil 2 and can be coupled at close range, thereby realizing charging transmission and reception, achieving the effect of wireless power supply to make the LED light board 9 illuminate, and solving the assembly problem in the prior art that the wires in the sun visor body 5 must pass through the sun visor rotating shaft 51.

[0033] The sun visor body 5 comprises a sun visor frame 52, a covering layer 53 wrapped around the sun visor frame 52, and a filler 54 between the covering layer 53 and the sun visor frame 52. The sun visor frame 52 is generally rectangular. One or more second coils 4 are provided, and each second coil 4 is positioned between the covering layer 53 and the sun visor rotation axis 51. By selecting the position of the second coil 4 and optimizing its parameters, close, contactless coupling between the antennas of the radio transmitter 1 and the radio receiver 3 is ensured, minimizing power and information loss.

[0034] Mirror 7 is mounted on one side of the length of the sun visor frame 52. When the sun visor body 5 is folded, the mirror 7 is located on the side of the frame 52 closest to the vehicle's roof. When the sun visor body 5 is deployed, the mirror 7 is located on the side of the frame 52 closest to the user. The LED light panel 9 includes an LED light and a light guide plate. The light guide plate is mounted on the side of the mirror 7 closest to the frame, and the LED light is positioned near or embedded within the light guide plate. When the LED light is controlled to emit light, the light guide plate effectively guides the light, illuminating the mirror 7 circumferentially for easier user experience.

[0035] The radio transmitter 1 includes a power input protection circuit, a power full-bridge circuit, a first switching component, and a PWM modulation / demodulation and transmission circuit, and the first switching component is arranged near the sun visor body 5. The power output end of the vehicle power supply is electrically connected to the input end of the power input protection circuit. The power input protection circuit may include a fuse and a filter capacitor to protect the safety and reliability of the equipment. The output end of the power protection circuit is electrically connected to the input end of the power full-bridge circuit. The power full-bridge circuit is used to convert the input voltage to provide the required voltage signal for the PWM modulation / demodulation and transmission circuit. The output end of the power full-bridge circuit is electrically connected to the PWM modulation / demodulation and transmission circuit through the first switching component, and the output end of the PWM modulation / demodulation and transmission circuit is electrically connected to the first coil 2.

[0036] A trigger 81 is also provided within the mirror cover 8, located on the side of the mirror cover 8 near the sun visor rotation axis 51, for triggering the first switching element. In this embodiment, the first switching element can be a Hall effect sensor or a magnetically controlled reed switch, and the trigger 81 is configured as a magnet. This non-contact operation, which triggers the switch via a magnetic field, reduces physical wear and tear and improves the stability and reliability of the entire device.

[0037] When the sun visor body 5 is in the folded state, the trigger member 81 is close to the first switch component and the first switch component is triggered, the PWM modulation / demodulation and transmission circuits are powered off, thereby stopping the radio transmission; when the sun visor body 5 is in the unfolded state, the trigger member 81 is away from the first switch component and the first switch component is not triggered, the PWM modulation / demodulation and transmission circuits are powered on, thereby starting the radio transmission.

[0038] The radio receiving device 3 is arranged on the side of the sunshade frame away from the mirror 7. The radio receiving device 3 includes a PWM modulation / demodulation and receiving circuit, a protection and rectification circuit, a second switching component, and an LED control circuit for controlling the switching of the LED lamp and adjusting the brightness. The second coil 4 is electrically connected to the input end of the PWM modulation / demodulation and receiving circuit, and the output end of the PWM modulation / demodulation and receiving circuit is electrically connected to the power supply end of the LED control circuit through the protection and rectification circuit and the second switching component in turn. The protection and rectification circuit can monitor and limit the current and voltage in the circuit to prevent the circuit from being overloaded or damaged. At the same time, it can rectify the input voltage signal for use by the subsequent LED control circuit. The LED control circuit can accurately control the switching of the LED light board 9 and also control the luminous brightness of the LED light board 9. When the sun visor body 5 is in the folded state, the magnetic flux lines of the first coil 2 after power is applied are parallel to the receiving end face of the second coil 4. At this point, the first coil 2 and the second coil 4 are in an uncoupled state, and the second coil 4 cannot receive the electromagnetic wave energy transmitted by the first coil 2. Simultaneously, the trigger 81 can control the first switch component within the radio transmitter 1, thereby shutting off the radio transmission of the first coil 2. When the sun visor body 5 is in the unfolded state, the magnetic flux lines of the first coil 2 after power is applied are perpendicular to the receiving end face of the second coil 4. At this point, the first coil 2 and the second coil 4 are in a coupled state, and the second coil 4 can receive the electromagnetic wave energy transmitted by the first coil 2. Simultaneously, because the trigger 81 is away from the first switch component within the radio transmitter 1, the radio transmission of the first coil 2 is activated.

[0039] The mirror cover 8 is generally rectangular and slidably mounted on the sun visor body 5 along the length of the mirror 7. In this embodiment, the second switch component can be a Hall effect sensor or a magnetically controlled reed switch. When the mirror cover 8 is closed, the trigger 81 moves away from the second switch component, deactivating the second switch component and de-energizing the LED control circuit. When the mirror cover 8 is opened, the trigger 81 moves closer to the second component, activating the second switch component and energizing the LED control circuit, thereby controlling the LED light panel 9.

[0040] The implementation principle of a sun visor with wireless power supply and LED lighting according to an embodiment of the present application is as follows: when the sun visor body 5 is in the folded state, the trigger 81 can trigger the first switch component, thereby de-energizing the PWM modulation / demodulation and transmission circuit functions, thereby stopping radio transmission. When the sun visor body 5 is in the unfolded state, the first switch component in the radio transmitter 1 detects that the trigger 81 has moved away, and the PWM modulation / demodulation and transmission circuit functions are energized, so that the radio transmitter 1 and the first coil 2 begin to transmit radio waves. At this time, the second coil 4 coupled to the first coil 2 transmits the received radio waves to its PWM modulation / demodulation and receiving circuit. When the mirror cover 8 is opened with the sun visor body 5 unfolded, the trigger 81 can trigger the second switch component, thereby energizing the LED control circuit function, thereby enabling the LED light panel 9 to receive power and illuminate.

[0041] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A sun visor with wireless power supply and LED lighting, comprising a sun visor body (5), wherein the sun visor body (5) is rotatably connected to a vehicle roof via a sun visor rotation shaft (51), and is characterized in that: The sun visor body (5) is provided with a mirror (7), and the sun visor body (5) is provided with a mirror cover (8) that can be opened or closed, and the sun visor body (5) is also provided with an LED light board (9); an electrically connected radio transmitting device (1) and a first coil (2) are provided on the vehicle body roof, an electrically connected radio receiving device (3) and a second coil (4) are provided in the sun visor body (5), and the output end of the radio receiving device (3) is electrically connected to the power supply end of the LED light board (9); when the sun visor body (5) is in a folded state, the second coil (4) is away from the first coil (2), and the second coil (4) and the first coil (2) are in a non-coupled state; when the sun visor body (5) is in an unfolded state, the second coil (4) and the second coil (4) are in a coupled state.

2. The sun visor with wireless power supply and LED lighting according to claim 1, characterized in that: The radio transmitting device (1) comprises a power input protection circuit, a power full-bridge circuit, and a PWM modulation / demodulation and transmission circuit which are electrically connected in sequence; the voltage output end of the vehicle power supply is electrically connected to the input end of the power input protection circuit; and the PWM modulation / demodulation and transmission circuit is electrically connected to the first coil (2).

3. The sun visor with wireless power supply and LED lighting according to claim 2, characterized in that: The radio receiving device (3) comprises a PWM modulation / demodulation and receiving circuit, a protection and rectification circuit, and an LED control circuit which are electrically connected in sequence. The second coil (4) obtains electric energy from the first coil through coupling. The electric energy is processed by the PWM modulation / demodulation and receiving circuit to power the LED control circuit. The output end of the LED control circuit is electrically connected to the power supply end of the LED light board (9).

4. The sun visor with wireless power supply and LED lighting according to claim 3, characterized in that: The radio transmitting device (1) further comprises a first switching component, and the power full-bridge circuit is electrically connected to the PWM modulation / demodulation and transmission circuit via the first switching component; the radio receiving device (3) further comprises a second switching component, and the PWM modulation / demodulation, protection and rectification circuit is electrically connected to the LED control circuit via the second switching component; a triggering element (81) is provided on the mirror cover (8), and the triggering element (81) is used to trigger the first switching element and the second switching element.

5. The sun visor with wireless power supply and LED lighting according to claim 4, characterized in that: The first switch component and the second switch component are both configured as Hall sensors or magnetically controlled reed switches, and the triggering element (81) is configured as a magnet.

6. The sun visor with wireless power supply and LED lighting according to claim 1, characterized in that: The sun visor body (5) comprises a sun visor frame (52) and a covering layer (53), a filler (54) is filled between the sun visor frame (52) and the covering layer (53), and the second coil (4) is arranged between the covering layer (53) and the sun visor rotation axis (51).

7. The sun visor with wireless power supply and LED lighting according to claim 1, characterized in that: The LED light panel (9) is arranged on the back side of the mirror (7) away from the mirror cover (8).

8. The sun visor with wireless power supply and LED lighting according to claim 7, characterized in that: The LED lamp panel (9) comprises an LED lamp and a light guide plate, and the LED lamp is arranged in the light guide plate.

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