Power supply circuit and electronic candle comprising same

Abstract

The utility model provides a power supply circuit. The power supply circuit comprises a high-voltage input module, a protection module, a discharge module used for improving safety performance, a voltage reduction and stabilization module used for reducing input high voltage, and a low-voltage output module. The high-voltage input module, the protection module, the discharge module, the voltage reduction and stabilization module and the low-voltage output module are connected in sequence; the high-voltage input module is connected with an external power supply; and the low-voltage output module is connected with an external electric component. The power supply circuit is simple in structure, the use cost can be greatly reduced, and external input high voltage is stably reduced for power supply. The utility model also provides an electronic candle comprising the power supply circuit, and the electronic candle can be used as a lamp accessory and can be assembled to form a lamp.

Description

Technical Field

[0001] This utility model relates to the field of electronic product technology, and more specifically, to a power supply circuit and an electronic candle composed therefrom. Background Technology

[0002] In pursuit of an elegant living space, people pay great attention to the atmosphere of their interior environments. Besides interior decoration, candles are often used to alter the ambiance. Traditional candles are mostly fuel-powered, used for everyday lighting or special occasions such as birthday parties and candlelight dinners. However, burning candles produces smoke, which not only pollutes the environment and is detrimental to health, but also poses safety hazards due to the open flame. Therefore, various electronic candles have emerged on the market. Electronic candles combine the practicality of lighting with aesthetic appeal and decoration, and can simulate the burning process of traditional candles, offering a very realistic effect.

[0003] Existing electronic candles consist of a rigid plastic outer casing housing an electronic control board, a battery, and a simulated flame. The overall structure is a single, modular assembly, with the simulated flame powered by the battery to mimic candle burning. However, these electronic candles can only be used independently on a tabletop and cannot be assembled into a lamp. Furthermore, these battery-powered electronic candles cannot be connected to mains power as accessories for lamps.

[0004] Therefore, it is necessary to develop an electronic candle that can be used as a lighting accessory. How to stably reduce the voltage of the simulated flame inside the electronic candle and how to reduce the cost of use are also problems that need to be solved. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings and deficiencies of the prior art and provide a power supply circuit with a simple structure, which can greatly reduce the cost of use and stably step down the external high voltage for power supply. This invention also provides an electronic candle including this power supply circuit, which can be used as a lamp accessory and assembled into a lamp.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a power supply circuit, characterized in that it includes a high-voltage input module, a protection module, a discharge module for improving safety performance, a step-down voltage regulator module for reducing the input high voltage, and a low-voltage output module; the high-voltage input module, protection module, discharge module, step-down voltage regulator module, and low-voltage output module are connected in sequence; the high-voltage input module is connected to an external power supply; and the low-voltage output module is connected to external electrical components.

[0007] In the above solution, compared with traditional isolated power supply circuits, the power supply circuit of this invention is simple and low in cost, and has the function of stabilizing and stepping down externally input high voltage, allowing for stable voltage reduction power supply to the electronic candle via an external power source. Furthermore, the power supply circuit of this invention includes a discharge module, which facilitates improved testing safety.

[0008] The discharge module is composed of resistors R3 and R4 and a safety capacitor CX1 connected together; resistors R3 and R4 discharge the safety capacitor CX1.

[0009] The step-down and voltage regulation module consists of a power chip U1, a power filter capacitor CE2, an inductor L1, and an inductor LG2 connected together.

[0010] The step-down voltage regulator module also includes a current-limiting resistor R1 to prevent high current surges into the power chip U1; the current-limiting resistor R1 is connected to the power chip U1.

[0011] The protection module consists of a varistor RV1 and a fuse F1; the low-voltage output module consists of a shunt resistor R2 and an output filter capacitor CE1.

[0012] An electronic candle comprises the power circuit described above; the electronic candle further comprises an outer cylinder, a light-emitting simulated flame module, and an electrical connector for connecting to an external power source; the outer cylinder and the electrical connector are detachably connected; the light-emitting simulated flame module and the power circuit are disposed within the outer cylinder, with the light-emitting simulated flame module extending from the top of the outer cylinder; the high-voltage input module of the power circuit is connected to the electrical connector, and the low-voltage output module of the power circuit is connected to the light-emitting simulated flame module.

[0013] In the above-described design, the electronic candle of this invention can be connected to an external power source via an electrical connector and powered by a power circuit to simulate a flame emission effect. Furthermore, the electronic candle of this invention can be used as a lamp accessory and assembled into a lamp using the electrical connector. This electrical connector can be either threaded or plug-in type.

[0014] The electronic candle also includes a main control board; the low-voltage output module of the power supply circuit is connected to the light-emitting simulated flame module through the main control board.

[0015] The first option is as follows: the luminous simulated flame module includes a lamp housing and a luminous wick; the luminous wick is installed on the top of the outer cylinder, and the luminous part of the luminous wick is installed inside the lamp housing; the low-voltage output module of the power supply circuit is connected to the luminous wick.

[0016] The second option is as follows: the light-emitting simulated flame module includes a flame plate and a light-emitting mechanism for projecting light onto the flame plate; the flame plate is oscillatingly disposed inside the outer cylinder and extends out from inside the outer cylinder; the light-emitting mechanism is disposed inside the outer cylinder and connected to the low-voltage output module of the power supply circuit.

[0017] The flame plate being oscillatingly disposed inside the outer cylinder means that the luminous simulated flame module also includes an oscillating mechanism disposed inside the outer cylinder; the oscillating mechanism includes a passive device and a power device for driving the passive device; the passive device is an oscillating body and a shaft that drive the flame plate to shake or sway, the oscillating body is connected to the bottom of the flame plate, the upper end of the shaft is inserted into the cavity inside the oscillating body, and the lower end of the shaft is connected to the outer cylinder.

[0018] The bottom of the swing body is equipped with a magnet, and the power device is an inductor coil that can generate a magnetic field; the inductor coil is opposite to the magnet of the swing body, and the two ends of the inductor coil are connected to the low-voltage output module of the power supply circuit.

[0019] Under the action of the power device, the swing body with the shaft inserted in the cavity shakes or sways with the shaft as the support axis, thereby driving the flame plate connected to the upper end of the swing body to shake or sway irregularly in multiple directions, enhancing the three-dimensionality of the electronic candle flame and creating a realistic candle flame jumping shape.

[0020] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0021] 1. The power supply circuit structure of this utility model is simple, which can greatly reduce the cost of use and stabilize the external high voltage input for power supply.

[0022] 2. This electronic candle can be used as a lamp accessory and assembled into a lamp. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the electronic candle in Example 1;

[0024] Figure 2 This is a schematic diagram of the internal structure of the electronic candle in Example 1;

[0025] Figure 3 This is a schematic diagram of the power supply circuit for the electronic candle in Example 1;

[0026] Figure 4 This is a schematic diagram of the electronic candle in Example 2;

[0027] Figure 5 This is a schematic diagram of the internal structure of the electronic candle in Example 2;

[0028] Among them, 1 is the power supply circuit, 1.1 is the high voltage input module, 1.2 is the protection module, 1.3 is the discharge module, 1.4 is the step-down and voltage stabilization module, 1.5 is the low voltage output module, 2 is the outer cylinder, 3 is the electrical connector, 4 is the main control board, 5 is the flame plate, 6 is the light-emitting mechanism, 7 is the swing body, 8 is the shaft, 9 is the magnet, 10 is the inductor coil, 11 is the lamp shell, and 12 is the light-emitting wick. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0030] Example 1

[0031] like Figures 1 to 3 As shown, the electronic candle of this utility model includes a power circuit 1, an outer cylinder 2, a light-emitting simulated flame module, and an electrical connector 3 for connecting to an external power source. The outer cylinder 2 and the electrical connector 3 are detachably connected. The light-emitting simulated flame module and the power circuit 1 are disposed inside the outer cylinder 2. The light-emitting simulated flame module extends out of the top of the outer cylinder 2. The power circuit 1 is connected to the electrical connector 3 and the light-emitting simulated flame module respectively.

[0032] The power supply circuit of this utility model includes a high-voltage input module 1.1, a protection module 1.2, a discharge module 1.3 for improving safety performance, a step-down and voltage-regulating module 1.4 for reducing the input high voltage, and a low-voltage output module 1.5. The high-voltage input module 1.1, the protection module 1.2, the discharge module 1.3, the step-down and voltage-regulating module 1.4, and the low-voltage output module 1.5 are connected in sequence. The high-voltage input module 1.1 is connected to the electrical connector 3, and the low-voltage output module 1.5 is connected to the luminous simulated flame module.

[0033] Specifically, discharge module 1.3 consists of resistors R3 and R4 connected together with safety capacitor CX1, and resistors R3 and R4 discharge the safety capacitor CX1. Buck regulator module 1.4 consists of power chip U1, power filter capacitor CE2, inductor L1, and inductor LG2 connected together. Additionally, buck regulator module 1.4 includes a current-limiting resistor R1 connected to the power chip U1 to prevent large current surges. Protection module 1.2 consists of a varistor RV1 connected together with fuse F1. Low-voltage output module 1.5 consists of a shunt resistor R2 connected together with output filter capacitor CE1.

[0034] The electronic candle of this invention also includes a main control board 4, and the low-voltage output module 1.5 of the power supply circuit is connected to the light-emitting simulated flame module through the main control board 4.

[0035] The luminous simulated flame module of this utility model includes a flame plate 5 and a light-emitting mechanism 6 for projecting light onto the flame plate 5. The flame plate 5 is swayably disposed inside the outer cylinder 2 and extends out from the outer cylinder 2. The light-emitting mechanism 6 is disposed inside the outer cylinder 2 and connected to the low-voltage output module 1.5 of the power supply circuit.

[0036] Specifically, the oscillating arrangement of the flame plate 5 inside the outer cylinder 2 means that the luminous simulated flame module also includes an oscillating mechanism inside the outer cylinder 2. This oscillating mechanism includes a passive device and a power device for driving the passive device. The passive device consists of an oscillating body 7 and a shaft 8 that drive the flame plate 5 to sway or swing. The oscillating body 7 is connected to the bottom of the flame plate 5, and the upper end of the shaft 8 is inserted into a cavity within the oscillating body 7, while the lower end of the shaft 8 is connected to the outer cylinder 2. In this embodiment, the bottom of the oscillating body 7 is provided with a magnet 9, and the power device is an inductor coil 10 capable of generating a magnetic field. The inductor coil 10 is opposite to the magnet 9 of the oscillating body 7, and both ends of the inductor coil 10 are connected to the low-voltage output module 1.5 of the power circuit 1 through the main control board 4.

[0037] Under the action of the power device, the swing body 7, which is inserted in the cavity with the shaft 8 as the support axis, shakes or sways, thereby driving the flame plate 5 connected to the upper end of the swing body 7 to shake or sway irregularly in multiple directions, enhancing the three-dimensionality of the electronic candle flame and creating a realistic candle flame jumping shape.

[0038] Example 2

[0039] The only difference between this embodiment and Embodiment 1 is that: Figure 4 and Figure 5 As shown, the simulated flame module for emitting light in this embodiment includes a lamp housing 11 and a light-emitting wick 12. The light-emitting wick 12 is installed on the top of the outer cylinder 2, and the light-emitting part of the light-emitting wick 12 is installed inside the lamp housing 11. The low-voltage output module of the power supply circuit 1 is connected to the light-emitting wick 12 through the main control board 4.

[0040] The other structures in this embodiment are the same as in Embodiment 1.

[0041] Example 3

[0042] The power supply circuit of this embodiment includes a high-voltage input module, a protection module, a discharge module for improving safety performance, a step-down voltage regulator module for reducing the input high voltage, and a low-voltage output module. The high-voltage input module, protection module, discharge module, step-down voltage regulator module, and low-voltage output module are connected in sequence. The high-voltage input module is connected to an external power supply, and the low-voltage output module is connected to an external electrical component.

[0043] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A power supply circuit, characterized by: The power supply circuit comprises a high-voltage input module, a protection module, a discharging module for improving safety performance, a voltage reduction and stabilization module for reducing input high voltage, and a low-voltage output module; the high-voltage input module, the protection module, the discharging module, the voltage reduction and stabilization module, and the low-voltage output module are connected in sequence; the high-voltage input module is connected with an external power supply; and the low-voltage output module is connected with an external electrical component.

2. The power supply circuit of claim 1, wherein: The discharging module is composed of a resistor R3, a resistor R4, and a safety capacitor CX1; the resistor R3 and the resistor R4 discharge the safety capacitor CX1.

3. The power supply circuit of claim 1, wherein: The voltage reduction and stabilization module is composed of a power supply chip U1, a power filter capacitor CE2, an inductor L1, and an inductor LG2.

4. The power supply circuit of claim 3, wherein: The voltage reduction and stabilization module further comprises a current-limiting resistor R1 for preventing a large current from impacting the power supply chip U1; the current-limiting resistor R1 is connected with the power supply chip U1.

5. The power supply circuit of claim 1, wherein: The protection module is composed of a pressure-sensitive resistor RV1 and a fuse F1; and the low-voltage output module is composed of a shunt resistor R2 and an output filter capacitor CE1.

6. An electronic candle, characterized by: The electronic candle comprises the power supply circuit according to any one of claims 1 to 5; the electronic candle further comprises an outer cylinder, a light-emitting simulated flame module, and an electrical connector for connecting with an external power supply; the outer cylinder is detachably connected with the electrical connector; the light-emitting simulated flame module and the power supply circuit are arranged in the outer cylinder, and the light-emitting simulated flame module extends out of the top of the outer cylinder; the high-voltage input module of the power supply circuit is connected with the electrical connector, and the low-voltage output module of the power supply circuit is connected with the light-emitting simulated flame module.

7. The electronic candle of claim 6, wherein: The electronic candle further comprises a main control board; the low-voltage output module of the power supply circuit is connected with the light-emitting simulated flame module through the main control board.

8. The electronic candle of claim 6, wherein: The light-emitting simulated flame module comprises a lamp shell and a light-emitting lamp core; the light-emitting lamp core is mounted on the top of the outer cylinder, and a light-emitting part of the light-emitting lamp core is arranged in the lamp shell; the low-voltage output module of the power supply circuit is connected with the light-emitting lamp core.

9. The electronic candle of claim 6, wherein: The light-emitting simulated flame module comprises a flame piece and a light-emitting mechanism for projecting light onto the flame piece; the flame piece is swingably arranged in the inner part of the outer cylinder and extends out of the inner part of the outer cylinder; the light-emitting mechanism is arranged in the inner part of the outer cylinder and is connected with the low-voltage output module of the power supply circuit.

10. The electronic candle of claim 9, wherein: The flame piece swingably arranged in the inner part of the outer cylinder means that the light-emitting simulated flame module further comprises a swing mechanism arranged in the inner part of the outer cylinder; the swing mechanism comprises a passive device and a power device for driving the passive device; the passive device is a swing body for swinging or rocking the flame piece and a shaft body, the swing body is connected with the bottom of the flame piece, the upper end of the shaft body is inserted into a cavity in the swing body, and the lower end of the shaft body is connected with the outer cylinder; The bottom of the swing body is provided with a magnet, and the power device is an inductor coil capable of generating a magnetic field; the inductor coil is opposite to the magnet of the swing body, and the two ends of the inductor coil are connected with the low-voltage output module of the power supply circuit.

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