Electronic candle having high flame simulation effect

Abstract

Provided in the present invention is an electronic candle having a high flame simulation effect. The electronic candle comprises: a housing provided with a top wall and a cylindrical peripheral wall, a through hole being provided in the center of the top wall; a flame head, which upwardly extends out of the through hole and comprises a candle-flame-imitating light-emitting body, and a wick-imitating column at the bottom end, wherein the light-emitting body comprises an LED lamp bead, and a light-guide cup at the bottom, the LED lamp bead and the light-guide cup are each a foggy colloid member, and the light transmittance of the LED lamp bead is higher than that of the light-guide cup; and a first light-emitting chip and a second light-emitting chip, which each change in brightness, are vertically provided inside the LED lamp bead, the first light-emitting chip above emits light upwardly and emits warm white light, and the second light-emitting chip below emits light downwardly and emits blue light; and a light-transmitting lampshade made of a transparent material, wherein the light-transmitting lampshade covers the periphery of the light-emitting body, and a transverse grating texture is formed on an inner surface of the light-transmitting lampshade. The electronic candle can simulate the effects of, for example, an inner flame, an outer flame, a flame core and a wick of a real candle flame, and has a very high degree of simulation.

Description

An electronic candle with highly simulated flame effect Technical Field

[0001] The invention relates to the technical field of simulated electronic candles. Background Art

[0002] Simulated electronic candles are smokeless, safe, and have a long service life. They have been used to replace traditional candles in many occasions. The core and difficulty of simulated electronic candles lies in how to simulate a more realistic candle flame dynamic effect through light and shadow, while also considering the product's energy consumption to meet the usage time requirements of various scenarios.

[0003] Currently, the first common type of simulated electronic candle structure is an electronic light-emitting device and a method for simulating real fire, such as the Chinese invention patent with authorization announcement number CN101865413B. The electronic light-emitting device projects light from a light-emitting element onto the surface of a swinging flame sheet to produce a dynamic light and shadow effect similar to a burning flame on the surface of the flame sheet. However, the disadvantage of this structure is that only one side of the flame sheet has the light and shadow effect, and when the flame sheet swings slightly, the light and shadow of the light-emitting element will deviate from the flame sheet and be projected onto objects such as the background wall, resulting in a poor simulation effect.

[0004] The second type of simulated electronic candle structure, such as the Chinese invention patent application document with publication number CN116146925A, discloses an LED simulated flame device. This simulated flame device includes a semi-transparent diffuser in the shape of a candle flame, a light-emitting lamp panel inserted into a receiving cavity, and a plurality of LED chips with random light and dark gradients on the light-emitting lamp panel. The light-emitting lamp panel displays dynamic light and shadow effects on the candle flame-shaped diffuser through the light and dark variations of the LED chips. However, the disadvantage of this structure is that the diffuser can only be made of a semi-transparent material to prevent the inner wall LED chips and light-emitting lamp panel from being visible. As a result, the light emitted by the LED chips is relatively dim, and the dynamic light and shadow formed by the light and dark variations of each LED chip is black, which is significantly different from the combustion effect of a real flame.

[0005] The above two common electronic candles and other existing simulated electronic candle structures are difficult to achieve the layered and integrated effect of the cotton wick, inner flame, outer flame and flame core as presented by a real flame when a candle burns. Summary of the Invention

[0006] In view of the shortcomings of existing electronic candles such as low flame simulation, the present invention provides an electronic candle with a highly simulated flame effect.

[0007] To achieve the above object, the technical solution adopted by the present invention is:

[0008] An electronic candle with a highly simulated flame effect comprises a housing, the housing comprising a top wall forming an accommodating cavity and a cylindrical peripheral wall, the top wall having a through hole at its center; a flame head extending upwardly through the through hole, comprising a candle-flame-imitation light-emitting body and a black, cotton-like stem concentrically connected to the bottom end of the light-emitting body; the light-emitting body comprising an LED lamp bead and a light guide cup located at the bottom of the LED lamp bead, the LED lamp bead and the light guide cup both being a mist-like colloid component, and the LED lamp bead having a higher light transmittance than the light guide cup; a first light-emitting chip and a second light-emitting chip are disposed within the LED lamp bead along a vertical central axis, the first light-emitting chip located above emitting warm white light upwardly, and the second light-emitting chip located below emitting blue light downwardly, the light emitted by the first and second light-emitting chips varying in brightness and darkness; and a translucent lampshade fixed to the housing and covering the periphery of the light-emitting body, the translucent lampshade being a transparent material component, and having a transverse grating pattern formed on its inner surface.

[0009] A preferred solution further includes a swinging device disposed in the accommodating cavity for driving the flame head to swing.

[0010] A preferred solution is that the swing device includes a horizontal axis, which is vertically inserted into the accommodating cavity by the two pins of the LED lamp bead and bent to the two outer sides respectively, and the two horizontal axes on both sides are concentrically arranged; a support frame is arranged in the accommodating cavity, including two vertical metal sheets arranged opposite to each other on the left and right, and support slots opened on the upper part of the metal sheets, and the two horizontal axes are movably inserted into the support slots on both sides respectively; a counterweight assembly includes a column suspended and fixed on the two pins, and a magnetic part fixed to the bottom of the column, the center of gravity of the counterweight assembly is located on the vertical central axis of the flame head; and a PCB board is horizontally arranged at the bottom of the counterweight assembly and electrically connected to the bottom ends of the two metal sheets by welding, the PCB board is provided with a control chip for controlling the operation of the first light-emitting chip and the second light-emitting chip, and an electromagnetic coil corresponding to the bottom of the magnetic part for driving the magnetic part to swing.

[0011] In a preferred embodiment, the support frame further includes a plastic frame, which includes a base plate and two vertical slots extending vertically from the base plate; the metal sheet is inserted and fixed in the vertical slots, and the PCB board is clamped on the base plate.

[0012] In a preferred embodiment, the columnar body comprises two parts fixed to each other, the columnar body having an axial hole for the pin to pass through, and a radial hole located between the joint surfaces of the two parts and communicating with the axial hole for holding the transverse axis.

[0013] In a preferred embodiment, limiting columns parallel to the transverse axis and used to limit the transverse movement of the columnar body extend from both sides of the columnar body.

[0014] In a preferred embodiment, the light-transmitting lampshade is cylindrical and fits snugly around the circumferential wall of the shell, with its top end higher than the flame head, and the grating texture is distributed at least on the portion of the light-transmitting lampshade that extends beyond the top wall of the shell.

[0015] In a preferred embodiment, the light-transmitting lampshade is flame-shaped and has a bottom portion fixed to the center of the top wall of the shell, and a gap is provided between an inner wall of the light-transmitting lampshade and an outer peripheral wall of the flame head.

[0016] In a preferred embodiment, the slit width of the grating texture is 0.5 mm and the depth is 0.07 mm.

[0017] The beneficial effect of the present invention is that: when in use, the first light emitting chip emits warm white light upwards, and the LED lamp bead is a mist-like colloid component, according to the Tyndall effect (Tyndall effect) The warm white light is scattered by the colloidal mist particles, resulting in a brighter white light above and around the first light-emitting chip in the light-emitting body, thus simulating the bright inner flame effect of a real candle flame. The warm white light emitted by the LED lamp beads is diffracted by the transverse grating texture of the transparent lampshade, stretching the light and shadow of the LED lamp beads upward, and forming a layer of light yellow light and shadow around the periphery, especially the top of the LED lamp beads, thus simulating the light yellow outer flame effect of a real candle flame. The second light-emitting chip emits blue light downward. Similarly, according to the Tyndall effect, it is scattered by the colloidal mist particles in the LED lamp beads and the light guide cup. The concentration of colloidal mist particles in the light guide cup is greater than that of the LED lamp beads. As a result, blue light is formed below the second light-emitting chip in the light-emitting body and gradually deepens, thus simulating the darker blue flame effect of a real candle flame. The blue light from the light guide cup is diffracted by the transverse grating texture of the transparent lampshade, causing the light and shadow of the light guide cup to be stretched downward to the periphery of the black imitation cotton core, thus simulating the effect of the black cotton core burning within the flame core in a real flame. Furthermore, after the light and shadow of the flame head are dispersed by the grating texture of the translucent lampshade, the light and shadow at the junction of the inner flame, outer flame, flame core, and cotton wick blend together, simulating the natural transition between the layers of a real candle flame. The first and second light-emitting chips each display light and dark variations, allowing each layer of light and shadow to simulate the dynamic light and dark effects of a real flame. Because the translucent lampshade is made of a transparent material, compared to the semi-translucent diffuser in the existing technology, not only is the light and shadow of the flame head brighter and the colors more realistic, but the grating texture also prevents the internal structure of the flame head from being revealed. In summary, this solution achieves a very high degree of flame simulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] FIG1 is a schematic diagram of the vertical cross-sectional structure of the electronic candle in Example 1;

[0020] FIG2 is a schematic diagram of the vertical cross-sectional structure of the flame head in Example 1;

[0021] FIG3 is a schematic diagram of the light and shadow effects of the electronic candle in Example 1;

[0022] FIG4 is a schematic structural diagram of the swing device in Example 1;

[0023] FIG5 is a schematic diagram of the vertical cross-sectional structure of the swing device in FIG4 ;

[0024] FIG6 is a schematic diagram of the vertical cross-sectional structure of the electronic candle in the second embodiment. Implementation Method

[0025] The present invention will be further described below with reference to the accompanying drawings: Example 1

[0026] 1 to 3 , the electronic candle of this embodiment includes a shell 1, wherein the shell 1 includes a top wall 11 and a cylindrical peripheral wall 12 forming an accommodating cavity 100, and the center of the top wall 11 has a through hole; a flame head 2 extends upward through the through hole, and includes a light-emitting body 21 imitating a candle flame, and a black imitation cotton stem 22 concentrically connected to the bottom end of the light-emitting body 21; the light-emitting body 21 includes an LED lamp bead 211, and a light guide cup 212 located at the bottom of the LED lamp bead 211, wherein both the LED lamp bead 211 and the light guide cup 212 are mist-like colloid components, and the light transmittance of the LED lamp bead 211 is higher than that of the light guide cup 212; the LED A first light-emitting chip 211a and a second light-emitting chip 211b are provided along the vertical central axis inside the lamp bead 211. The first light-emitting chip 211a located at the top emits light upward and is warm white light, and the second light-emitting chip 211b located at the bottom emits light downward and is blue light. The light of the first light-emitting chip 211a and the second light-emitting chip 211b changes between light and dark respectively; and a translucent lampshade 3 is fixed to the shell 1 and covers the outer periphery of the light-emitting body 21. The translucent lampshade 3 is a transparent material component, and the inner surface of the translucent lampshade 3 is formed with a horizontal grating texture 31. The slit width of the grating texture 31 is 0.5 mm and the depth is 0.07 mm.

[0027] When in use, the first light-emitting chip 211a emits warm white light upward, and the LED lamp bead 211 is a mist-like colloidal component. According to the Tyndall effect, the warm white light is scattered by the mist-like colloidal particles, so that the first light-emitting chip 211a on the light-emitting body 21 presents a white light with higher brightness above and around it, thereby simulating the bright inner flame 200a effect in a real candle flame; and the warm white light emitted from the LED lamp bead 211 is diffracted by the horizontal grating texture 31 of the transparent lampshade 3, and the light and shadow of the LED lamp bead 211 will be stretched upward, and a layer of light yellow light and shadow will appear on the periphery of the LED lamp bead 211, especially on the top, thereby simulating the light yellow outer flame 200b effect in a real candle flame. The second light-emitting chip 211b emits blue light downward. Similarly, according to the Tyndall effect, the blue light is scattered by the mist colloidal particles of the LED lamp bead 211 and the light guide cup 212. The concentration of the mist colloidal particles in the light guide cup 212 is greater than that of the LED lamp bead 211, so that blue light is formed under the second light-emitting chip 211b of the light-emitting body 21 and gradually deepens, thereby simulating the effect of the darker blue flame core 200c in a real candle flame; and the blue light of the light guide cup 212 is diffracted by the horizontal grating texture 31 of the transparent lampshade 3, causing the light and shadow of the light guide cup 212 to stretch downward to the periphery of the black imitation cotton core 22, thereby simulating the effect of the black cotton core being wrapped and burning by the flame core 200c in a real flame. Furthermore, after the light and shadow of the flame head 2 are dispersed by the grating texture 31 of the translucent lampshade 3, the light and shadow at the junction of the inner flame 200a, outer flame 200b, flame core 200c, and cotton wick blend together, simulating the natural transition between the layers of a real candle flame. The first light-emitting chip 211a and the second light-emitting chip 211b respectively change in brightness, allowing each layer of light and shadow to simulate the dynamic light and dark effects of a real flame. Because the translucent lampshade 3 is made of a transparent material, compared to the semi-translucent diffuser in the prior art, not only is the light and shadow of the flame head 2 brighter and the colors more realistic, but the grating texture 31 also prevents the internal structure of the flame head 2 from being revealed. In summary, the flame effect simulation of this solution is very high.

[0028] The light-emitting body 21 can be fixedly installed or swingably installed. The fixed installation structure can be realized by using existing technology and will not be described in detail. The present embodiment is a swinging installation structure. Referring to Figures 4 and 5, it includes a swinging device 4 provided in the accommodating cavity 100 for driving the flame head 2 to swing. There are many mature swinging device solutions in the prior art, which will not be described here. The flame head 2 is randomly swung by the swinging device 4, and the light and shadow of the flame head 2 are transmitted through the grating texture 31 of the light-transmitting lampshade 3, which can simulate the dynamic effect of the flame swinging with the wind, making the flame burning effect more realistic. In particular, during the swinging process, the grating texture 31 of the light-transmitting lampshade 3 will disperse the light and shadow, which will blur the edges of the flame light and shadow. Compared with the clear flame outline and cotton core outline in the prior art, the flame light and shadow of this solution are more realistic and natural.

[0029] As a preferred structure, the swing device 4 includes a transverse shaft 41, which is vertically inserted into the accommodating cavity 100 by the two pins 211c of the LED lamp bead 211 and bent to the two outer sides respectively, and the two transverse shafts 41 on both sides are concentrically arranged; a support frame 42 is arranged in the accommodating cavity 100, including two vertical metal sheets 421 arranged opposite to each other on the left and right, and a support slot 422 opened on the upper part of the metal sheet 421, and the two transverse shafts 41 are movably inserted into the support slots 422 on both sides; a counterweight component 43 includes a weight component 43 which is suspended and fixed to the two The columnar body 431 on the pin 211c, and the magnetic part 432 fixed to the bottom of the columnar body 431, the center of gravity of the counterweight assembly 43 is located on the vertical central axis of the flame head 2; and the PCB board 44 is horizontally arranged at the bottom of the counterweight assembly 43 and electrically connected to the bottom ends of the two metal sheets 421 through welding, the PCB board 44 is provided with a control chip for controlling the operation of the first light-emitting chip 211a and the second light-emitting chip 211b, and an electromagnetic coil 441 corresponding to the bottom of the magnetic part 432 for driving the magnetic part 432 to swing.

[0030] Its operating principle is as follows: the control chip on the PCB board 44 is electrically connected to the two pins 211c of the LED lamp bead 211 via metal sheets 421 on both sides, thereby controlling the brightness and darkness of the first light-emitting chip 211a and the second light-emitting chip 211b, respectively. Under the action of the control chip, the electromagnetic coil 441 generates intermittent electromagnetic signals, which excite the magnetic member 432 to cause the light-emitting element to randomly oscillate about the transverse axis 41. Transverse axis 41 is formed by bending the two pins 211c of the LED lamp bead 211. This design is not only simple in structure and assembly, but also extremely lightweight. Compared with existing oscillating devices, it significantly reduces the energy consumption required for oscillation, thereby extending the single-use duration of the electronic candle. The electrical connection between the transverse axis 41 and the metal sheet 421 eliminates the need for electrical wiring between the LED lamp bead 211 and the PCB board 44. This solves the problem in the prior art where the wiring can restrict the swing of the flame head 2, making it less natural and prone to breakage during prolonged swinging. It also simplifies product assembly.

[0031] In this embodiment, the support frame 42 further includes a plastic frame 45 comprising a base plate 451 and two vertical slots 452 extending vertically from the base plate 451. The metal sheet 421 is inserted and secured within the vertical slots 452, while the PCB 44 is secured to the base plate 451. Furthermore, the battery compartment 5 is secured to the bottom of the housing 1's accommodating cavity 100, with the plastic frame 45 secured to the top surface of the battery compartment 5. The plastic frame 45 further strengthens the mounting structure of the PCB 44 and metal sheet 421, while also facilitating the installation and securing of the flame head 2 and swinging mechanism 4 within the accommodating cavity 100.

[0032] In this embodiment, the columnar body 431 includes an upper section 4311 and a lower section 4312, which are concentrically arranged and fixed to each other. The upper section 4311 has an axial hole 4313 for the pin 211c to pass through, and the joint surface between the upper section 4311 and the lower section 4312 has a radial hole 4314 extending radially through the upper section 4311 for receiving the transverse shaft 41. Specifically, the upper section 4311 and the lower section 4312 can be fixed together via a plug-in structure. During assembly, the pin 211c of the LED lamp bead 211 only needs to be inserted through the light guide cup 212, the cotton-like core column 22, and the axial hole 4313 of the upper section 4311 in sequence. The transverse shaft 41 is then bent outward and positioned corresponding to the radial hole 4314. Finally, the lower section 4312 is plugged and fixed to the upper section 4311, making the assembly of the pin 211c and the columnar body 431 simple. In other embodiments, the columnar body 431 may also be composed of two parts that are plugged into each other on the left and right sides.

[0033] In this embodiment, limit posts 4315 extend from both sides of the columnar body 431, parallel to the transverse axis 41, to limit the lateral movement of the columnar body 431. A certain gap exists between the ends of the limit posts 4315 and the metal sheet 421, allowing the columnar body 431 to swing freely without deviating laterally and causing jamming. This also ensures that the flame head 2 remains centered on the top of the housing 1.

[0034] In this embodiment, the translucent lampshade 3 is cylindrical and fits snugly around the peripheral wall 12 of the housing 1, with its top portion higher than the flame head 2. The grating texture 31 extends at least over the portion of the translucent lampshade 3 that extends beyond the top wall 11 of the housing 1. This translucent lampshade 3 gives the electronic candle the appearance of a teacup candle. When light is transmitted through this translucent lampshade 3, not only does it display a realistic dynamic flame effect, but the grating texture 31 also creates an additional halo 200d around the periphery of the flame, thereby simulating a lighting effect closer to that of candle lighting. Example 2

[0035] Referring to Figure 6 , the remaining structures of this embodiment are essentially the same as those of the first embodiment, differing in that the translucent lampshade 3 is flame-shaped, its bottom portion fixed to the center of the top wall 11 of the housing 1, and a gap is provided between the inner wall of the translucent lampshade 3 and the outer peripheral wall 12 of the flame head 2. This translucent lampshade 3 gives the electronic candle the appearance of a regular candle and simulates the outline of a flame. The gap between the translucent lampshade 3 and the flame head 2 not only provides swinging space for the flame head 2 but also creates light and shadow space for the outer flame 200b of the simulated flame and the portion of the flame core 200c surrounding the burning cotton wick.

[0036] The above description does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An electronic candle with a highly simulated flame effect, characterized in that: include A shell, the shell comprising a top wall forming a receiving cavity and a cylindrical peripheral wall, and the top wall has a through hole at the center; The flame head passes through the through hole upward, and includes a candle flame-like light-emitting body and a black cotton-like core column concentrically connected to the bottom of the light-emitting body; the light-emitting body includes an LED lamp bead and a light guide cup located at the bottom of the LED lamp bead, the LED lamp bead and the light guide cup are both mist-like colloid components, and the light transmittance of the LED lamp bead is higher than that of the light guide cup; a first light-emitting chip and a second light-emitting chip are arranged along the vertical central axis of the LED lamp bead, the first light-emitting chip located at the top emits light upward and is warm white light, and the second light-emitting chip located at the bottom emits light downward and is blue light, and the light of the first light-emitting chip and the second light-emitting chip respectively changes in brightness; and a light-transmitting lampshade fixed to the shell and covering the periphery of the light-emitting body; the light-transmitting lampshade is a transparent material component, and a transverse grating texture is formed on the inner surface of the light-transmitting lampshade.

2. The electronic candle with a highly simulated flame effect according to claim 1, characterized in that: It also includes a swing device arranged in the accommodating cavity for driving the flame head to swing.

3. The electronic candle with a highly simulated flame effect according to claim 2, characterized in that: The rocking device comprises A transverse axis is formed by two pins of the LED lamp bead vertically penetrating into the accommodating cavity and being bent toward two outer sides respectively, and the two transverse axes on both sides are concentrically arranged; A support frame is arranged in the accommodating cavity, comprising two vertical metal sheets arranged opposite to each other on the left and right sides, and a support slot hole opened on the upper part of the metal sheet, and the two transverse shafts are movably arranged in the support slot holes on both sides respectively; A counterweight assembly, comprising a columnar body suspended and fixed on the two pins, and a magnetic member fixed on the bottom of the columnar body, wherein the center of gravity of the counterweight assembly is located on the vertical center axis of the flame head; And a PCB board is horizontally arranged at the bottom of the counterweight assembly and electrically connected to the bottom ends of the two metal sheets by welding. The PCB board is provided with a control chip for controlling the operation of the first light-emitting chip and the second light-emitting chip, and an electromagnetic coil arranged below the corresponding magnetic part for driving the magnetic part to swing.

4. The electronic candle with a highly simulated flame effect according to claim 3, characterized in that: The support frame also includes a plastic frame, which includes a bottom plate and two vertical slots extending vertically from the bottom plate; the metal sheet is inserted and fixed in the vertical slots, and the PCB board is fixed on the bottom plate.

5. The electronic candle with a highly simulated flame effect according to claim 3, characterized in that: The columnar body comprises two parts fixed to each other, and the columnar body has an axial hole for the pin to pass through, and a radial hole located between the joint surfaces of the two parts and communicating with the axial hole for clamping the transverse axis.

6. The electronic candle with a highly simulated flame effect according to claim 5, characterized in that: Limiting columns parallel to the transverse axis and used to limit the transverse movement range of the columnar body extend from both sides of the columnar body.

7. The electronic candle with a highly simulated flame effect according to claim 1, characterized in that: The light-transmitting lampshade is cylindrical and is adaptively sleeved outside the peripheral wall of the shell, with the top end higher than the flame head, and the grating texture is distributed at least on the part of the light-transmitting lampshade that exceeds the top wall of the shell.

8. The electronic candle with a highly simulated flame effect according to claim 1, characterized in that: The light-transmitting lampshade is flame-shaped and has a bottom fixed to the center of the top wall of the shell, and a gap space is provided between the inner wall of the light-transmitting lampshade and the outer peripheral wall of the flame head.

9. The electronic candle with a highly simulated flame effect according to claim 1, characterized in that: The grating texture has a slit width of 0.5 mm and a depth of 0.07 mm.

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