Camping light and lighting device

Abstract

The utility model provides a camping lamps and lighting device, including detachable connection's lamp holder subassembly and lamp stand subassembly, relate to lighting technical field, the circuit assembly of this application is sealed in the containing cavity of lamp holder subassembly and lamp stand subassembly, ensure the physical conductive contact of lamp holder subassembly and lamp stand subassembly connection interface. The battery assembly in the lamp stand subassembly supplies power to the light source assembly of lamp holder subassembly through wireless power supply, and the external wireless charger replenishes the energy for the battery assembly in the lamp stand subassembly through wireless charging technology. The whole charging and power supply process abandons the exposed physical interface, eliminates the main path of liquid water intrusion into the internal circuit of the traditional wired charging interface. This not only completely eliminates the short circuit, component damage and other failures caused by water entering the interface, but also eliminates the safety hazards caused thereby, fundamentally solves the biggest defect of the waterproofing of the charging port in the prior art, and achieves the goal of full sealing and waterproofing.

Description

Technical Field

[0001] This utility model relates to the field of lighting technology, and in particular to a camping lamp and lighting device. Background Technology

[0002] With the increasing popularity of outdoor camping, the performance and reliability of camping lights, as important nighttime lighting equipment, have become a major concern. Due to the complex and ever-changing outdoor environment, often facing rain, dew, damp ground, and even accidental water immersion, waterproofing has become one of the key indicators for evaluating the quality of camping lights.

[0003] Currently, most mainstream camping lights on the market employ a waterproof design strategy based on sealing the connection points. Specifically, the lights are typically assembled from multiple detachable or adjustable components, such as the lamp head and base. To achieve basic waterproofing, manufacturers usually place waterproof gaskets made of rubber or silicone at the joints of these components. When these components are properly tightened or snapped into place, the gaskets are compressed and deformed, filling the gaps at the joint surfaces, thus forming a physical barrier to prevent the intrusion of external liquid water. This design, to a certain extent, meets the needs of the lights in normal rain or splash environments. However, this traditional waterproof design has significant drawbacks and limitations, affecting the long-term reliability of the product. For example, the critical charging interface lacks effective waterproof protection, posing a continuous risk of water ingress and short circuits; and the disassembly of the core waterproof connection points during manual maintenance can easily damage their seal, introducing new points of water ingress risk. Utility Model Content

[0004] The main purpose of this utility model is to propose a camping lamp and lighting device, which aims to solve the problem of insufficient waterproofness of the charging interface and component assembly connection of traditional camping lamps.

[0005] To achieve the above objectives, this application proposes a camping light fixture, including a detachably connected lamp head assembly and a lamp holder assembly, wherein the connection interface between the lamp head assembly and the lamp holder assembly has no conductive contacts;

[0006] The lamp holder assembly includes:

[0007] The first housing has a sealed first receiving cavity formed inside;

[0008] A first circuit assembly is disposed within the first receiving cavity. The first circuit assembly includes a power supply receiving end and a light source assembly electrically connected to the power supply receiving end.

[0009] The lamp holder assembly includes:

[0010] The second housing has a sealed second receiving cavity inside;

[0011] The second circuit assembly is disposed in the second accommodating cavity. The second circuit assembly includes a battery assembly, a power supply transmitter and a charging receiver electrically connected to the battery assembly.

[0012] The battery assembly wirelessly transmits electrical energy to the power receiver via the power transmitter to drive the light source assembly; and the battery assembly wirelessly receives electrical energy from an external wireless charger via the charging receiver.

[0013] In one embodiment, the battery assembly includes:

[0014] Battery;

[0015] The charge / discharge management circuit has a first input terminal electrically connected to the charging receiver, a second input terminal electrically connected to the output terminal of the battery, a first output terminal electrically connected to the input terminal of the battery via a switching circuit, and a second output terminal electrically connected to the power supply transmitter. The charge / discharge management circuit is used to transmit the electrical energy input from the charging receiver to the battery for charging, and to transmit the electrical energy from the battery to the power supply transmitter.

[0016] A switching circuit, connected in series between the input terminal of the battery and the first output terminal of the charge / discharge management circuit, is used to control the on or off state of the battery's charging circuit.

[0017] In one embodiment, the power supply transmitter includes

[0018] The lamp holder control circuit is used to output corresponding control signals according to the received instructions;

[0019] A fixed-frequency output circuit is connected to the second output terminal of the lamp holder main control circuit and the charge / discharge management circuit, and is used to generate a fixed-frequency high-frequency AC signal.

[0020] The power amplifier circuit has its input terminal electrically connected to the output terminal of the fixed frequency output circuit, and is used to amplify the current of the high-frequency AC signal.

[0021] The series resonant circuit, with its input terminal electrically connected to the output terminal of the driving circuit, is used to convert the amplified high-frequency AC signal into a high-frequency alternating electromagnetic field signal.

[0022] In one embodiment, the power supply transmitter further includes:

[0023] The secondary signal detection circuit has its input terminal electrically connected to the series resonant circuit and its output terminal electrically connected to the lamp holder control circuit. It is used to detect the load change of the transmitting coil and feed it back to the lamp holder control circuit.

[0024] A current detection and protection circuit is connected in series between the series resonant circuit and the lamp holder control circuit to detect the current of the transmitting coil and output a current detection signal to the lamp holder control circuit.

[0025] The lamp holder control circuit is used to receive and detect whether the lamp head assembly is in place according to load changes; the lamp holder control circuit is also used to output a control signal to shut down the fixed frequency output circuit when the current detection signal exceeds a threshold.

[0026] In one embodiment, the light source assembly includes:

[0027] LED beads;

[0028] The lamp holder control circuit is used to output corresponding PWM control signals according to the received instructions;

[0029] The LED constant current driving circuit has its input terminal electrically connected to the output terminal of the lamp holder control circuit. It is used to receive and output a corresponding current signal according to the PWM control signal to drive the LED beads to work.

[0030] The lamp holder control circuit is communicatively connected to the lamp head control circuit. The lamp holder control circuit is also used to send instructions to the lamp head control circuit in response to user operations in order to control the working mode of the LED beads.

[0031] In one embodiment, the power supply receiver / charging receiver includes:

[0032] An induction coil circuit is used to receive high-frequency alternating electromagnetic field signals and convert them into induced AC signals.

[0033] A bridge rectifier circuit, with its input terminal electrically connected to the output terminal of the induction coil circuit, is used to convert the induced AC power output by the induction coil circuit into a DC signal to drive the light source assembly to work / charge the battery.

[0034] In one embodiment, the lamp head assembly and the lamp holder assembly are mechanically connected at their close ends by a connector, which is respectively disposed on the side of the lamp head assembly facing the lamp holder assembly / the side of the lamp holder assembly facing the lamp head assembly.

[0035] In one embodiment, the power supply transmitter is disposed at one end of the second receiving cavity facing the lamp holder assembly, and the charging receiver is disposed at one end of the second receiving cavity away from the lamp holder assembly.

[0036] In addition, to achieve the above objectives, this application also proposes a lighting device, including a wireless charger and a camping lamp as described above.

[0037] In one embodiment of a lighting device, the wireless charger includes a charging transmitter and a wireless transmitting circuit electrically connected to the charging transmitter. The wireless charger transmits electrical energy to the charging receiver of the lamp holder assembly through the charging transmitter to charge the battery.

[0038] This application seals the first and second circuit components within the first receiving cavity of the lamp head assembly and the second receiving cavity of the lamp holder assembly, ensuring physical conductive contacts at the interface between the lamp head assembly and the lamp holder assembly. On one hand, the battery component within the lamp holder assembly supplies power to the light source component of the lamp head assembly wirelessly; on the other hand, an external wireless charger replenishes the energy of the battery component within the lamp holder assembly using wireless charging technology. The entire charging and power supply process eliminates exposed physical interfaces, removing the traditional wired charging interface as the primary path for liquid water to enter the internal circuitry. This not only fundamentally prevents short circuits and component damage caused by water ingress into the interface, but also eliminates the resulting safety hazards, achieving a fundamental solution to the biggest defect in existing technologies—the lack of waterproofing at the charging port—and achieving a fully sealed and waterproof goal. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0040] Figure 1 This is a structural framework diagram of a camping lamp according to the present invention;

[0041] Figure 2 This is a structural diagram of a camping lamp according to the present invention.

[0042] Reference numerals: Lamp head assembly 01, power supply receiver 11, light source assembly 12, lamp holder assembly 02, battery assembly 21, power supply transmitter 22, charging receiver 23, wireless charger 04.

[0043] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0044] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0045] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0046] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0047] This application proposes a camping light fixture, such as Figure 1 and Figure 2 As shown, the lamp includes a detachably connected lamp head assembly 01 and a lamp holder assembly 02, with no conductive contacts at the connection interface between the lamp head assembly 01 and the lamp holder assembly 02. The lamp head assembly 01 includes: a first housing with a sealed first receiving cavity inside; and a first circuit assembly disposed within the first receiving cavity, the first circuit assembly including a power supply receiver 11 and a light source assembly 12 electrically connected to the power supply receiver 11. The lamp holder assembly 02 includes: a second housing with a sealed second receiving cavity inside; and a second circuit assembly disposed within the second receiving cavity, the second circuit assembly including a battery assembly 21, a power supply transmitter 22 electrically connected to the battery assembly 21, and a charging receiver 23. The battery assembly 21 wirelessly transmits electrical energy to the power supply receiver 11 through the power supply transmitter 22 to drive the light source assembly 12 to work; and the battery assembly 21 wirelessly receives electrical energy from an external wireless charger 04 through the charging receiver 23.

[0048] More specifically, in the complex and ever-changing outdoor environment, the waterproof performance of camping lights directly determines the reliability of nighttime illumination and user safety. Currently, mainstream waterproofing strategies rely on designs based on joint seals: the light fixture is assembled from detachable or adjustable parts such as the lamp head and base, with rubber or silicone sealing gaskets embedded at their joints. When the user properly tightens or fastens the parts, the gaskets are compressed and deformed, tightly filling the microscopic gaps at the joint surfaces, forming a physical barrier that effectively prevents the intrusion of external rainwater, dew, or splashes. This design does provide basic protection against regular rain or splashes from wet ground.

[0049] However, this traditional method has significant inherent flaws that limit the long-term reliability of products. The charging interface becomes a critical weak point. Most lighting fixtures' charging ports (such as USB or DC interfaces) are open or semi-open structures, lacking an effective active sealing mechanism. In humid environments, rainwater, condensation, or accidentally spilled liquids can easily seep into the internal circuitry through the interface, causing short circuits, corrosion, and even safety accidents, posing a persistent risk of water ingress. An even more challenging issue lies in the maintenance process. When a lighting fixture requires manual disassembly for repair due to a malfunction, users or repair personnel must repeatedly twist or separate these connections that rely on precise compression seals. Each disassembly and reassembly operation can irreversibly damage the originally reliable sealing structure due to uneven force, misaligned gaskets, damage from aging materials, or the intrusion of minute impurities. This not only fails to completely repair the original fault but may also introduce new, more hidden points of water leakage at the core connection, significantly weakening the product's durability.

[0050] To overcome the current predicament and improve the waterproof reliability of camping lights, fundamental innovation in design concepts and material application is needed. Addressing the potential hazards of charging interfaces is paramount. Feasible approaches include adopting concealed magnetic charging contacts to physically isolate liquid contact; or designing robust waterproof plugs / caps for traditional interfaces, ensuring they have a self-locking or snap-on double-seal structure for physical isolation. Regarding maintenance and damage issues at connection points, the overall architecture needs optimization. Unnecessary detachable parts should be minimized, promoting an integrated design of the main structure to fundamentally eliminate the number of connection points. For detachable structures that must be retained, self-locking or self-positioning designs should be adopted to reduce the uncertainty of manual operation; simultaneously, new sealing materials should be explored, such as elastomers with memory recovery capabilities or self-healing coatings, to improve the sealing retention of gaskets after repeated disassembly and reassembly. Furthermore, strengthening the structural protection itself is equally important, such as optimizing drainage channels in the casing and improving the potting level of key electronic components to ensure the safety of core circuits even with trace moisture infiltration. Through these systematic improvements, camping lights can truly achieve reliable "rain or shine" lighting in harsh outdoor environments.

[0051] Therefore, this application proposes a camping lamp that eliminates the physical conductive contacts at the connection interface between the lamp head assembly 01 and the lamp holder assembly 02, instead employing wireless power transmission technology and combining it with a double independent sealed cavity to achieve highly efficient waterproof performance. The lamp mainly consists of two key detachable modules: the lamp head assembly 01 and the lamp holder assembly 02. They are mechanically connected, but there are no exposed metal contacts on the physical contact surface. This design fundamentally cuts off the most direct path for liquid water to seep into the internal circuitry through the connection port, thereby improving waterproof reliability.

[0052] The lamp holder assembly 01 is the light source output unit of the entire lamp fixture, including a first housing. Inside this housing is a sealed first receiving cavity. The airtightness of this cavity ensures the physical isolation of the internal critical electronic components from the external humid environment. Within the cavity, a first circuit assembly is integrated. This circuit assembly includes a light source assembly 12 and a power supply receiver 11. The light source assembly 12 is responsible for converting electrical energy into light energy to provide illumination. The power supply receiver 11 is a wireless energy receiver that receives electromagnetic energy signals emitted from the power supply transmitter 22 inside the lamp holder assembly 02. The received electromagnetic energy is then converted into direct current electrical energy by the first circuit assembly, directly driving the light source assembly 12 to emit light. Because the entire energy reception and conversion process occurs within the sealed first receiving cavity, without any external wires or physical interfaces, the lamp holder assembly 01 itself constitutes a highly waterproof lighting unit.

[0053] The lamp holder assembly 02 serves as the energy storage and wireless power supply hub for the entire lamp fixture, and includes a second housing. It also forms a sealed second receiving cavity internally. This independent sealed cavity protects the core energy storage and power supply components inside. Within the second receiving cavity, a second circuit assembly is integrated. This circuit includes a battery assembly 21, a power transmitter 22 electrically connected to the battery assembly 21, and a charging receiver 23. The battery assembly 21, as the energy storage unit for the entire lamp fixture, is typically composed of a rechargeable battery, providing power reserves for the light source and the circuit itself. The power transmitter 22 is a wireless energy transmitter that converts the electrical energy stored in the battery assembly 21 into electromagnetic field energy of a specific frequency and emits it outward through the second housing. This emitted energy field is captured and utilized by the power receiver 11 within the lamp head assembly 01, thereby achieving contactless energy transfer from the lamp holder to the lamp head, driving the lamp head to emit light. The operation of the power transmitter 22 takes place within the sealed cavity.

[0054] The charging receiver 23 is also a wireless energy receiver. Its function is similar to that of the power receiver 11 inside the lamp holder, but in the opposite direction. It receives electromagnetic energy signals emitted by the external wireless charger 04 and converts the received energy into direct current to charge the internal battery assembly 21. In this way, the lamp holder assembly 02 can also replenish its energy wirelessly without any exposed charging interface. In one embodiment, the lamp holder and lamp base portions are sealed using a single injection molding or ultrasonic sealing technique to enclose the internal circuit components.

[0055] Injection molding encapsulation involves placing the internal circuit components directly into a mold and injecting molten engineering plastic during the manufacturing process of the lamp holder / base housing. After the plastic cools and solidifies, the circuitry is encased within a solid plastic body, forming a seamless physical barrier. Ultrasonic welding sealing involves aligning and pressing the upper and lower covers containing the circuitry into a pre-fabricated housing, using an ultrasonic generator to produce high-frequency vibrations. The plastic molecules at the contact surfaces melt instantly due to frictional heat, fusing at the molecular level under pressure. After cooling, this forms a seamless, integral structure, completely eliminating the need for the joint surfaces found in traditional sealing gaskets. Both injection molding and ultrasonic processes create a non-removable, sealed housing. Liquid water, moisture, and even dust are kept out, physically isolating the circuitry from the external environment and achieving highly efficient waterproofing.

[0056] When the lamp requires additional power, the entire lamp or only the lamp holder assembly 02 is placed on the matching external wireless charger 04. The electromagnetic field generated by the external charger penetrates the second housing of the lamp holder assembly 02 and is captured by the charging receiver 23 inside. The receiver converts the electromagnetic energy into electrical energy to charge the battery assembly 21. The entire process is completed with the second receiving cavity sealed. After the lamp head assembly 01 and the lamp holder assembly 02 are correctly assembled, the user turns on the lamp. The battery assembly 21 inside the lamp holder assembly 02 provides power to the power transmitter 22. The power transmitter 22 generates an electromagnetic field. This electromagnetic field penetrates the housings of both components and is received by the sealed power receiver 11 inside the lamp head assembly 01. The power receiver 11 converts the electromagnetic energy into direct current to drive the light source assembly 12 to emit light. Energy transfer also occurs without physical contact and with each cavity sealed. Since the lamp head and lamp holder transmit energy wirelessly and each has its own independent sealed cavity, the operation of disassembling the lamp head assembly 01 for cleaning, replacing the lamp head, or maintaining the lamp holder will not damage any critical waterproof seals. Because energy transmission does not rely on the physical contact seal of the connector, disassembly only disconnects the mechanical connection and does not affect the cavity's sealing. After reassembly, the wireless energy transmission function will be restored.

[0057] This application seals the first and second circuit components within the first receiving cavity of the lamp head assembly 01 and the second receiving cavity of the lamp holder assembly 02, ensuring physical conductive contacts at the interface between the lamp head assembly 01 and the lamp holder assembly 02. On one hand, the battery component 21 within the lamp holder assembly 02 supplies power to the light source component 12 of the lamp head assembly 01 wirelessly; on the other hand, an external wireless charger 04 replenishes energy to the battery component 21 within the lamp holder assembly 02 via wireless charging technology. The entire charging and power supply process eliminates exposed physical interfaces, removing the traditional wired charging interface as the primary path for liquid water to enter the internal circuitry. This not only fundamentally prevents short circuits and component damage caused by water ingress into the interface, but also eliminates the resulting safety hazards, achieving a fundamental solution to the biggest defect in existing technologies—the lack of waterproofing at the charging port—and achieving a better sealing and waterproofing goal.

[0058] In one embodiment, such as Figure 1 As shown, the battery assembly 21 includes:

[0059] The battery includes a charge / discharge management circuit. A first input terminal is electrically connected to the charging receiver 23, a second input terminal is electrically connected to the battery output terminal, a first output terminal is electrically connected to the battery input terminal via a switching circuit, and a second output terminal is electrically connected to the power supply transmitter 22. This charge / discharge management circuit is used to transfer electrical energy input from the charging receiver 23 to the battery for charging, and to transfer electrical energy from the battery to the power supply transmitter 22. A switching circuit, connected in series between the battery input terminal and the first output terminal of the charge / discharge management circuit, is used to control the on / off state of the battery's charging circuit.

[0060] This can be understood as the charge / discharge management circuit coordinating energy input, output, and safety protection. The first input terminal of the charge / discharge management circuit is directly connected to the charging receiver 23. When the lamp is placed on the wireless charger 04, the electrical energy generated by the charging receiver 23 is first input to this circuit. The management circuit continuously monitors the validity of the input energy, and after confirming its validity, outputs the electrical energy through its first output terminal. This output terminal is not directly connected to the battery, but rather connects to the battery's input terminal after passing through a switching circuit. This "passing through" does not refer to a physical series connection, but rather a logically controlled path; the management circuit can actively control the validity of this output. Under normal charging conditions, the management circuit unconditionally activates this path, allowing externally input electrical energy to continuously replenish the battery. The second input terminal of the charge / discharge management circuit is connected to the battery's output terminal. When power is needed for the lamp head, the energy stored in the battery enters the management circuit through this connection. The second output terminal of the management circuit is then connected to the power transmitter 22.

[0061] When the external wireless charger 04 wirelessly transmits power to the charging receiver 23 and the charging conditions are met, the charge / discharge management circuit receives power through its first input terminal. The internal charging controller converts and regulates the input power to meet the battery's safe charging requirements. Then, the regulated charging power is output through its first output terminal, ready to flow to the battery's input terminal. When the system needs to supply power to the lamp head assembly 01, the charge / discharge management circuit obtains power from the battery's output terminal through its second input terminal. The internal discharge controller / power path manager of the charge / discharge management circuit performs necessary conversions and stabilizations on the battery's output power according to the needs of the power supply transmitter 22. The converted power is output through its second output terminal, directly supplying the power supply transmitter 22. Throughout the entire operation, the charge / discharge management circuit continuously monitors the battery's voltage, current, temperature, and the status of its input / output terminals. Once an anomaly is detected (such as overvoltage, overcurrent, overtemperature, low or high battery voltage), it will immediately take protective measures, such as stopping the charging output by disconnecting the control switch circuit or shutting off the output itself, or stopping the discharging output, to protect the safety of the battery and the entire system.

[0062] The switching circuit acts as a "gate" in the battery charging path. Its main function is to controllably turn the battery charging circuit on or off. It provides a means to precisely control whether the charging current can flow into the battery. It typically consists of one or more electronic switching elements, along with the necessary drive circuitry. The drive circuit receives control signals from the charge / discharge management circuitry to precisely turn the switching elements on or off. When a valid "on" control signal is received, the switching circuit turns on, establishing a low-resistance conductive path between the first output terminal of the charge / discharge management circuit and the battery input terminal. At this time, the charging current output by the charge / discharge management circuit can smoothly flow into the battery through the switching circuitry to charge the battery. When a "off" control signal is received, the switching circuit turns off, cutting off the electrical connection between the first output terminal of the charge / discharge management circuit and the battery input terminal. At this time, even if there is voltage output at the first output terminal of the charge / discharge management circuit, the charging current cannot flow to the battery, and the charging process is forcibly stopped.

[0063] The battery assembly 21 is designed to accurately capture user intent through a switching circuit and rely on a charge / discharge management circuit to achieve intelligent and safe control of battery energy. It clearly separates and controls the charging and discharging paths, ensuring that users have absolute control over the light switch while seamlessly integrating wireless charging functionality. All operations are completed within the sealed cavity of the lamp holder assembly 02, meeting the stringent reliability and safety requirements of a sealed wireless transmission architecture.

[0064] In one embodiment, the power supply transmitter 22 includes

[0065] The lamp holder control circuit is used to output corresponding control signals according to the received instructions; the fixed frequency output circuit is connected to the second output terminal of the lamp holder main control circuit and the charge / discharge management circuit, and is used to generate a fixed frequency high-frequency AC signal; the power amplifier circuit is electrically connected to the output terminal of the fixed frequency output circuit, and is used to amplify the current of the high-frequency AC signal; the series resonant circuit is electrically connected to the output terminal of the drive circuit, and is used to convert the amplified high-frequency AC signal into a high-frequency alternating electromagnetic field signal.

[0066] In this embodiment, the power supply transmitter 22 efficiently and controllably converts the DC power provided by the charge / discharge management circuit into a high-frequency alternating electromagnetic field signal of a specific frequency. This process involves four main steps: signal control, frequency generation, power enhancement, and electromagnetic conversion, which are respectively completed by the following circuit modules:

[0067] The lamp holder control circuit receives commands from other parts of the system, which may include user input, sensors, and communication modules. It then parses and processes these commands according to preset logic or algorithms. After processing, it outputs corresponding control signals to subsequent circuits, particularly the fixed-frequency output circuit, to direct the overall operating state and parameters of the transmitter. The circuit continuously or event-triggeredly receives external command signals through its input interface, parses the received commands, and generates corresponding control signals from the control core.

[0068] The fixed-frequency output circuit obtains the required DC power from the second output terminal of the charge / discharge management circuit and generates a specific and stable high-frequency sine wave or square wave signal based on the control signal sent by the lamp holder control circuit. This signal has a fixed frequency, conforming to wireless charging standards. It provides a reference frequency for subsequent power amplification and electromagnetic conversion. It receives an enable control signal from the lamp holder control circuit. When a "start" command is received, the oscillator circuit begins to operate; when a "stop" command is received, the oscillator stops operating. The internal electronic components of the oscillator interact to generate continuous self-excited oscillation, outputting a high-frequency AC signal with a constant frequency.

[0069] The generated high-frequency AC signal is output to the input of the power amplifier circuit. The power amplifier circuit is the "engine" for energy enhancement. Although the high-frequency signal generated by the fixed-frequency output circuit is accurate in frequency, its current driving capability is usually very small, insufficient to directly drive the transmitting coil to generate a sufficiently strong magnetic field. The task of the power amplifier circuit is to amplify this weak high-frequency AC signal, enhancing it to a level sufficient to drive the subsequent resonant circuit and effectively transfer energy, while maintaining its frequency characteristics essentially unchanged.

[0070] A series resonant circuit is responsible for efficiently converting electrical energy into electromagnetic field energy. Its main functions are twofold: utilizing the resonant characteristics of inductors and capacitors, it selectively allows signals of specific frequencies to pass through with the lowest impedance, while suppressing harmonic components of other frequencies, resulting in a purer output signal. It converts the high-power, high-frequency alternating current output from a power amplifier circuit into a high-frequency alternating electromagnetic field signal. This electromagnetic field can propagate in space and be captured by the coil at the receiving end. The core components are an inductor and a capacitor connected in series. The inductor is typically made of multi-strand Litz wire to reduce high-frequency losses, and its physical shape and size determine the distribution of the magnetic field. The capacitor is usually a high-Q, low-loss high-frequency capacitor. This LC series combination forms a resonant circuit. When a high-frequency, high-current signal from the power amplifier circuit is input to the series resonant circuit, the circuit resonates in series. At this time, the inductive reactance and capacitive reactance of the inductor L and capacitor C are equal in value but opposite in phase, canceling each other out, thus minimizing the impedance of the entire circuit to the input signal. This means that at this frequency, the current can flow through the circuit to the maximum extent. Because the impedance is extremely low at resonance, a very large resonant current will be generated in the circuit even if the input voltage remains constant. This powerful high-frequency current flows through the transmitting coil (L). According to Faraday's law of electromagnetic induction and Ampere's law, when a large current flows through the coil, a high-intensity, high-frequency alternating magnetic field is generated in the space around the coil. At the same time, the changing magnetic field also induces an electric field, forming an alternating electromagnetic field. This electromagnetic field is the carrier of wireless energy transmission. This high-frequency alternating electromagnetic field penetrates space. When the receiving coil enters the range of this magnetic field, an electromotive force is induced in the receiving coil, thus completing the wireless energy transmission.

[0071] A fixed-frequency circuit provides precise "rhythm," a power amplifier circuit provides powerful "power," and a series resonant circuit efficiently converts electrical energy into electromagnetic field "fluctuations" in space, ultimately enabling wireless power supply. The fixed-frequency design ensures the system operates at a standard frequency, improving compatibility and efficiency. The series resonance maximizes energy transfer efficiency and filters out unwanted harmonic interference.

[0072] In one embodiment, the power supply transmitter 22 further includes:

[0073] The secondary signal detection circuit has its input terminal electrically connected to the series resonant circuit and its output terminal electrically connected to the lamp holder control circuit. It is used to detect the load change of the transmitting coil and feed it back to the lamp holder control circuit. The current detection protection circuit is connected in series between the series resonant circuit and the lamp holder control circuit. It is used to detect the current of the transmitting coil and output a current detection signal to the lamp holder control circuit.

[0074] The lamp holder control circuit is used to receive and detect whether the lamp head assembly 01 is in place according to the load change; the lamp holder control circuit is also used to output a control signal to shut down the fixed frequency output circuit when the current detection signal exceeds the threshold.

[0075] In this embodiment, the function of the power supply transmitter 22 is further expanded. It can not only transmit energy but also actively sense the load status and monitor its own operating status, making intelligent decisions based on this information. This is mainly achieved through the following two circuits:

[0076] The secondary signal detection circuit monitors changes in the operating state of the series resonant circuit in real time, especially those introduced by the load, namely the lamp holder assembly 01. It indirectly senses load changes by detecting specific electrical parameters on the resonant circuit. The detected information is converted into an electrical signal and fed back to the lamp holder control circuit to detect whether the lamp holder assembly 01 is correctly positioned in the transmitting area. The circuit continuously or periodically samples weak electrical signals from the series resonant circuit. The characteristics of this signal change significantly with the load state of the resonant circuit. When the lamp holder assembly 01 and lamp holder assembly 02 are correctly positioned and connected, the coil of the power supply receiver 11 is coupled to the power supply transmitter 22 circuit through electromagnetic induction, effectively introducing a reflected impedance into the transmitter resonant circuit. This causes an increase in the equivalent load of the transmitter resonant circuit, manifested as changes in the voltage / current amplitude at the resonant point, a slight shift in the resonant frequency, or a phase change. The conditioning and analysis module inside the secondary signal detection circuit is specifically designed to capture this specific change pattern introduced by the load, extract the load state information, and feed it back to the lamp holder control circuit to detect whether the lamp holder assembly 01 is in place. The lamp holder control circuit only initiates or maintains emission when a valid lamp holder assembly 01 is detected.

[0077] The current detection and protection circuit monitors the effective or peak value of the AC current flowing through the series resonant circuit. Once the current exceeds a preset safety threshold, it immediately generates a current detection signal and sends it to the lamp holder control circuit, triggering emergency protection to prevent power devices from burning out due to overcurrent or the system from being damaged by abnormal conditions. The current sensor within the current detection and protection circuit is connected in series in the main path of the resonant current; all operating current flowing through the transmitting coil must pass through this sensor. The lamp holder control circuit continuously monitors the current detection signal fed back by the sensor. Once the current detection signal exceeds the threshold, the control circuit immediately outputs a control signal to shut down the fixed-frequency output circuit.

[0078] The secondary signal detection circuit and the current detection and protection circuit together provide crucial sensing and protection capabilities for the power supply transmitter 22. The former lets the system "know" whether or not to transmit, while the latter ensures the system's safety during transmission. The lamp holder control circuit integrates these two pieces of information and executes these decisions by controlling the start and stop of the fixed-frequency output circuit, thereby building a smarter and safer wireless energy transmission system.

[0079] In one embodiment, the light source assembly 12 includes:

[0080] LED lamp beads; lamp head control circuit, used to output corresponding PWM control signals according to received instructions; LED constant current drive circuit, the input terminal of which is electrically connected to the output terminal of the lamp head control circuit, used to receive and output corresponding current signals according to the PWM control signals to drive the LED lamp beads to work;

[0081] The lamp holder control circuit is communicatively connected to the lamp head control circuit. The lamp holder control circuit is also used to send instructions to the lamp head control circuit in response to user operations in order to control the working mode of the LED beads.

[0082] Specifically, the system receives user operation commands such as "turn on the light," "adjust to 50% brightness," and "switch to warm white light mode" from the lamp holder control circuit via a wireless link. It then analyzes the command content to determine the target brightness / color / mode. Based on the target state, it calculates and outputs a PWM square wave signal with the corresponding duty cycle. The duty cycle directly determines the average current of the LED, thus controlling the brightness. For multi-channel LEDs, multiple independent PWM signals may be generated. The PWM signal is sent to the input of the LED constant current drive circuit through the output terminal. The LED constant current drive circuit receives the PWM signal output from the lamp holder control circuit and converts it into a precise, stable DC current corresponding to the duty cycle. This current drives the LED to emit light, ensuring a constant current unaffected by power supply voltage fluctuations or changes in the LED's forward voltage drop.

[0083] Meanwhile, the second housing of the lamp holder assembly 02 is provided with a touch area, which converts the user's physical contact into a recognizable electronic signal, enabling button operations such as short press / long press / double click. A short press turns on the lamp and switches functions. After the lamp is turned on by a short press, the power supply transmitter 22 of the lamp holder assembly 02 generates an alternating electromagnetic induction signal to supply power to the lamp head assembly 01. Additionally, the lamp holder control circuit receives the button operation signals from the touch area and transmits them to the lamp head control circuit via wireless communication to control the operating mode of the LED beads. The lamp head control circuit and the lamp holder control circuit communicate using a wireless communication mechanism, similar to RFID, thereby enabling the switching of LED lighting functions (full brightness / half brightness / flashing / SOS signal).

[0084] In one embodiment, the power supply receiver 11 / charging receiver 23 includes:

[0085] An induction coil circuit is used to receive high-frequency alternating electromagnetic field signals and convert them into induced AC signals; a bridge rectifier circuit, whose input terminal is electrically connected to the output terminal of the induction coil circuit, is used to convert the induced AC output by the induction coil circuit into DC signals to drive the light source assembly 12 to work / charge the battery.

[0086] This can be understood as follows: the induction coil circuit captures a high-frequency alternating electromagnetic field in space and converts it into an alternating current signal of the same frequency through the principle of electromagnetic induction. The high-frequency alternating magnetic field generated by the transmitting coil in the lamp holder assembly 02 passes through the receiving coil of the induction coil circuit. According to Faraday's law, the changing magnetic field induces an electromotive force in the receiving coil wires, forming a closed loop and generating an induced current, which is then sent to the bridge rectifier circuit. The bridge rectifier circuit converts the bidirectional alternating current (AC) output from the induction coil into unidirectional direct current (DC), achieving rectification and providing DC power for the subsequent LED constant current drive circuit and lamp holder control circuit.

[0087] In one embodiment, such as Figure 2 As shown, the lamp head assembly 01 and the lamp holder assembly 02 are mechanically connected at their close ends by a connector 03. The connector 03 is respectively disposed on the side of the lamp head assembly 01 facing the lamp holder assembly 02 and the side of the lamp holder assembly 02 facing the lamp head assembly 01.

[0088] Specifically, the connector 03 between the lamp head assembly 01 and the lamp holder assembly 02 can be either a snap-fit ​​or a threaded connection, with no electrical contact between them. Connector 03 provides a high-strength mechanical connection, ensuring the lamp head and lamp holder do not separate under vibration, drop, or other adverse conditions. It strictly isolates the moisture / liquid pathways between the two housing chambers, maintaining the independence of the chambers and reserving precise alignment space for wireless energy transmission. Through the mechanical locking of connector 03, the reliability of the physical connection between the lamp head and lamp holder is ensured, while the wireless energy penetration characteristics completely eliminate conductive contacts. The dual independent sealed chambers combined with the non-porous outer shell prevent liquid water from entering, providing a waterproof lighting solution for harsh environments such as outdoor spaces, bathrooms, and industrial settings.

[0089] In one embodiment, the power supply transmitter 22 is disposed at one end of the second receiving cavity facing the lamp holder assembly 02, and the charging receiver 23 is disposed at one end of the second receiving cavity away from the lamp holder assembly 02.

[0090] The power transmitter 22 is located at the end of the second receiving cavity facing the lamp head assembly 01, and is dedicated to radiating energy outward to wirelessly power the lamp head light source. The charging receiver 23 is located at the end of the second receiving cavity away from the lamp head assembly 01, and is dedicated to receiving external energy to wirelessly charge the lamp holder battery. The two wireless systems operate on different frequency bands, and physical isolation blocks magnetic field crosstalk. The heat source (transmitter power circuit) and the sensitive element (receiver control chip) are located at opposite ends of the cavity, preventing heat accumulation. The power transmitter 22 is directly connected to the battery output terminal, and the charging receiver 23 is directly connected to the battery input terminal, shortening the power path. The bidirectional wireless energy flow operates efficiently in the physically isolated spatial channel, and combined with the directional sealing design at the cavity end, it achieves wireless functionality while creating a highly efficient waterproof barrier.

[0091] Furthermore, to achieve the above objectives, this application also proposes a lighting device, including a wireless charger 04 and a camping lamp as described above. The camping lamp includes a detachably connected lamp head assembly 01 and a lamp holder assembly 02, the connection interface between the lamp head assembly 01 and the lamp holder assembly 02 having no conductive contacts; the lamp head assembly 01 includes: a first housing with a sealed first receiving cavity formed inside; a first circuit assembly disposed within the first receiving cavity, the first circuit assembly including a power supply receiver 11 and a light source assembly 12 electrically connected to the power supply receiver 11; the lamp holder assembly 02 includes: a second housing with a sealed second receiving cavity formed inside; a second circuit assembly disposed within the second receiving cavity, the second circuit assembly including a battery assembly 21, a power supply transmitter 22 electrically connected to the battery assembly 21, and a charging receiver 23;

[0092] The battery assembly 21 wirelessly transmits electrical energy to the power receiving end 11 via the power transmitting end 22 to drive the light source assembly 12; and the battery assembly 21 wirelessly receives electrical energy from the external wireless charger 04 via the charging receiving end 23. This application seals the first circuit assembly and the second circuit assembly within the first receiving cavity of the lamp head assembly 01 and the second receiving cavity of the lamp holder assembly 02, ensuring physical conductive contacts at the interface between the lamp head assembly 01 and the lamp holder assembly 02. On one hand, the battery assembly 21 within the lamp holder assembly 02 supplies power to the light source assembly 12 of the lamp head assembly 01 wirelessly; on the other hand, the external wireless charger 04 replenishes energy to the battery assembly 21 within the lamp holder assembly 02 via wireless charging technology. The entire charging and power supply process eliminates exposed physical interfaces, removing the traditional wired charging interface as the main path for liquid water to enter the internal circuitry. This not only eliminates short circuits and component damage caused by water ingress at the interface, but also eliminates the resulting safety hazards, fundamentally solving the biggest defect of the lack of waterproofing in the charging port in the prior art, and achieving the goal of highly efficient sealing and waterproofing.

[0093] In one embodiment of a lighting device, the wireless charger 04 includes a charging transmitter and a wireless transmitting circuit electrically connected to the charging transmitter. The wireless charger 04 transmits electrical energy to the charging receiver 23 of the lamp holder assembly 02 through the charging transmitter to charge the battery.

[0094] In this embodiment of the lighting device, a dedicated wireless charger 04, comprising a charging transmitter and a wireless transmitting circuit, is used to achieve safe, contactless charging of the battery inside the lamp holder assembly 02 from the outside. The wireless transmitting circuit receives electrical energy input from an external power source and precisely regulates and converts it. The circuit composition of the charging transmitter and the power supply transmitter 22 of the lamp holder assembly 02 is largely the same, and will not be described in detail here. Under the drive of a high-frequency alternating current signal, the coil inside the charging transmitter generates a magnetic field that rapidly alternates according to the frequency of the signal. This dynamically changing magnetic field is the carrier of energy transfer, and it can penetrate the air gap or non-metallic material between the charger housing and the housing of the lamp holder assembly 02. Inside the lamp holder assembly 02, a corresponding charging receiver 23 is integrated in a sealed second receiving cavity.

[0095] The circuit connected to the charging receiver 23 converts the induced AC power back to DC power and adjusts it to a suitable voltage and current level for charging the battery assembly 21, ultimately providing energy to the sealed battery assembly 21 inside the lamp holder assembly 02 safely and efficiently. Throughout the process, the charging transmitter is responsible for converting electrical energy into magnetic field energy that can propagate in space, while the wireless transmitting circuit provides the charging transmitter with precise control drive signals. The two work closely together to achieve contactless, penetrating transmission of electrical energy from the external charger to the internal battery of the lamp, which is a key external link to ensure the lamp's sealed and waterproof characteristics.

[0096] The above embodiments are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A camping light fixture, characterized in that, It includes a detachably connected lamp head assembly and a lamp holder assembly, wherein the connection interface between the lamp head assembly and the lamp holder assembly has no conductive contacts; The lamp holder assembly includes: The first housing has a sealed first receiving cavity formed inside; A first circuit assembly is disposed within the first receiving cavity. The first circuit assembly includes a power supply receiving end and a light source assembly electrically connected to the power supply receiving end. The lamp holder assembly includes: The second housing has a sealed second receiving cavity inside; The second circuit assembly is disposed in the second accommodating cavity. The second circuit assembly includes a battery assembly, a power supply transmitter and a charging receiver electrically connected to the battery assembly. The battery assembly wirelessly transmits electrical energy to the power receiver via the power transmitter to drive the light source assembly; and the battery assembly wirelessly receives electrical energy from an external wireless charger via the charging receiver.

2. The camping light fixture as described in claim 1, characterized in that, The battery assembly includes: Battery; The charge / discharge management circuit has a first input terminal electrically connected to the charging receiver, a second input terminal electrically connected to the output terminal of the battery, a first output terminal electrically connected to the input terminal of the battery via a switching circuit, and a second output terminal electrically connected to the power supply transmitter. The charge / discharge management circuit is used to transmit the electrical energy input from the charging receiver to the battery for charging, and to transmit the electrical energy from the battery to the power supply transmitter. A switching circuit, connected in series between the input terminal of the battery and the first output terminal of the charge / discharge management circuit, is used to control the on or off state of the battery's charging circuit.

3. The camping light fixture as described in claim 2, characterized in that, The power supply transmitter includes The lamp holder control circuit is used to output corresponding control signals according to the received instructions; A fixed-frequency output circuit is connected to the second output terminal of the lamp holder control circuit and the charge / discharge management circuit, and is used to generate a fixed-frequency high-frequency AC signal. The power amplifier circuit has its input terminal electrically connected to the output terminal of the fixed frequency output circuit, and is used to amplify the current of the high-frequency AC signal. The series resonant circuit, with its input terminal electrically connected to the output terminal of the power amplifier circuit, is used to convert the amplified high-frequency AC signal into a high-frequency alternating electromagnetic field signal.

4. The camping light fixture as described in claim 3, characterized in that, The power supply transmitter also includes: The secondary signal detection circuit has its input terminal electrically connected to the series resonant circuit and its output terminal electrically connected to the lamp holder control circuit. It is used to detect the load change of the transmitting coil and feed it back to the lamp holder control circuit. A current detection and protection circuit is connected in series between the series resonant circuit and the lamp holder control circuit to detect the current of the transmitting coil and output a current detection signal to the lamp holder control circuit. The lamp holder control circuit is used to receive and detect whether the lamp head assembly is in place according to load changes; the lamp holder control circuit is also used to output a control signal to shut down the fixed frequency output circuit when the current detection signal exceeds a threshold.

5. The camping light fixture as described in claim 3, characterized in that, The light source assembly includes: LED beads; The lamp holder control circuit is used to output corresponding PWM control signals according to the received instructions; The LED constant current driving circuit has its input terminal electrically connected to the output terminal of the lamp holder control circuit. It is used to receive and output a corresponding current signal according to the PWM control signal to drive the LED beads to work. The lamp holder control circuit is communicatively connected to the lamp head control circuit. The lamp holder control circuit is also used to send instructions to the lamp head control circuit in response to user operations in order to control the working mode of the LED beads.

6. The camping light fixture as described in claim 1, characterized in that, The power supply receiver / charging receiver includes: An induction coil circuit is used to receive high-frequency alternating electromagnetic field signals and convert them into induced AC signals. A bridge rectifier circuit, with its input terminal electrically connected to the output terminal of the induction coil circuit, is used to convert the induced AC power output by the induction coil circuit into a DC signal to drive the light source assembly to work / charge the battery.

7. The camping light fixture as described in claim 1, characterized in that, The lamp head assembly and the lamp holder assembly are mechanically connected at their close ends by a connector, which is respectively located on the side of the lamp head assembly facing the lamp holder assembly / the side of the lamp holder assembly facing the lamp head assembly.

8. The camping light fixture as described in claim 7, characterized in that, The power supply transmitter is located at one end of the second receiving cavity facing the lamp holder assembly, and the charging receiver is located at one end of the second receiving cavity away from the lamp holder assembly.

9. A lighting device, characterized in that, This includes wireless chargers and camping lights as described in any one of claims 1-8.

10. The lighting device as claimed in claim 9, characterized in that, The wireless charger includes a charging transmitter and a wireless transmitting circuit electrically connected to the charging transmitter. The wireless charger transmits electrical energy to the charging receiver of the lamp holder assembly through the charging transmitter to charge the battery.

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