Electronic candle

Abstract

The utility model provides an electronic candle which comprises a lamp holder, a lamp strip, a flame cover, a light-transmitting tube, a connecting seat, a base and a lampshade. Wherein the lamp strip is divided into a flame light-emitting part and a colored light part, the flame cover and the light-transmitting tube are correspondingly sleeved with the flame light-emitting part and the colored light part respectively, and the flame cover and the light-transmitting tube are fixed through the connecting base in a clamping and inserting mode; the lampshade is divided into a candle combustion simulation area and a non-combustion simulation area which cover the flame cover and the light-transmitting tube respectively; the controller drives the flame light to fluctuate randomly through the PWM dimming circuit, and meanwhile, the white light is controlled to be output stably in a constant-current mode. The electronic candle is of a layered structure, the waterproof effect is good, the length of the lampshade can be selected according to needs, assembling is convenient, dynamic lighting effect combination is adopted for flame of the candle, the flame form of a real candle is simulated, even lighting is provided, the simulation degree and practicability are improved, and the standard lamp cap is adopted so that the electronic candle can be conveniently installed on a lamp holder.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of simulation candle, especially electronic candle. BACKGROUND

[0002] Traditional candle has open fire safety hazard, electronic candle replaces traditional candle and gets wide application, because electronic candle adopts environmental protection, low cost, durable electronic light emitting device to simulate candle combustion form, gets wide use in people's daily life.

[0003] However, the existing electronic candle has the following problems in simulation effect and practicability:

[0004] 1. Single light effect: most products only simulate flame dynamics, lack of zoning lighting function, and cannot balance atmosphere and practicability.

[0005] 2. Complex structure: flame cover and lamp body connection is easy to loosen, and light transmission pipe and lamp strip are not closely matched, which affects the appearance and has poor waterproof performance.

[0006] 3. Poor simulation effect: light effect fluctuation is regular, lacks natural randomness, and white light stability is poor. INVENTION CONTENTS

[0007] In view of the above problems in the prior art, the utility model provides an electronic candle, which solves the above problems through split type lamp strip design, optimized assembly structure and double control units, has the characteristics of high simulation, good waterproof performance and low assembly cost.

[0008] The utility model provides an electronic candle, which comprises: a lamp holder for connecting an external power supply lamp base; a lamp strip extending in an axial direction, the lamp strip comprising a flame light emitting part and a colored light part below the flame light emitting part; a flame cover in a conical structure, the flame cover being sleeved on the flame light emitting part of the lamp strip; a light transmission pipe in a hollow tubular structure, the light transmission pipe being sleeved on the colored light part of the lamp strip; and a connecting seat having an axial through hole, one end of the connecting seat being clamped with a bottom end of the flame cover, and the other end of the connecting seat being inserted with an upper end of the light transmission pipe, the connecting seat being used for separating the candle into a candle burning simulation area and a non-burning simulation area.

[0009] Preferably, the utility model further comprises a lamp shade, the lamp shade being sleeved on the flame cover, the connecting seat and the light transmission pipe, an upper part of the lamp shade forming a candle burning simulation section corresponding to the flame cover, and a lower part of the lamp shade forming a non-burning simulation section corresponding to the light transmission pipe.

[0010] Preferably, the lower end of the lamp holder is formed with an annular assembly groove with an axial depth of 2-5 mm, the upper end of the lamp shade is provided with an annular plug pipe with an outer diameter that is an interference fit with the groove width of the annular assembly groove, the lower end of the lamp shade is connected with a base, the bottom end of the base extends outward in a circumferential direction to form an annular step edge, and the side wall of the annular step edge is flush with the side wall of the lamp shade to form a continuous cylindrical surface.

[0011] Preferably, the conical outer surface of the flame cover is distributed with flame-shaped wave-shaped concave-convex lines, and at least three radially protruding clamping protrusions are arranged at the bottom periphery of the flame cover; L-shaped clamping grooves corresponding to the number and position of the clamping protrusions are formed in the upper part of the inner wall of the axial through hole of the connecting seat, and the transverse groove depth of the clamping grooves is greater than the radial protrusion amount of the clamping protrusions.

[0012] Preferably, the lamp strip is a flat strip-shaped lamp panel, the lamp panel is divided into an upper lamp panel upper section and a lower lamp panel lower section along the length direction, and the width of the lamp panel upper section is smaller than the width of the lamp panel lower section; wherein a plurality of warm light LED lamp beads are arranged on the front and back surfaces of the lamp panel upper section along the length direction; and a plurality of white light LED lamp beads are arranged in parallel on the front and back surfaces of the lamp panel lower section along the length direction.

[0013] Preferably, the upper end of the lamp holder has an external thread, the conductive terminal of the external thread is made of nickel-plated copper alloy material, and the outer diameter size of the insulating base body of the lamp holder is greater than the outer diameter size of the lamp shade.

[0014] Preferably, two independent insulated connecting wires are further included, the first ends of the connecting wires are respectively welded to the positive and negative terminals of the lamp holder; the axial through hole of the connecting seat is provided with wire holes on both sides, and the second ends of the connecting wires are connected with the input pads of the lamp strip after passing through the wire holes to form a anti-disconnection connection.

[0015] Preferably, a controller electrically connected with the lamp strip is further included, and the controller comprises: a first control unit and a second control unit, wherein the first control unit is connected with the flame light emitting part through a PWM dimming circuit and is configured to drive the flame light emitting part to generate random brightness fluctuations at a frequency of 0.5-2Hz, and the brightness fluctuation range is 30%-70% of the nominal value; and the second control unit is connected with the colored light part through a constant current driving circuit and is configured to maintain the brightness of the colored light part within a range of ±5% of the nominal value.

[0016] The technical effect of the electronic candle is provided in the utility model:

[0017] 1. Through the combination of the wavy lines on the surface of the conical flame cover and the dynamic dimming of the flame LED, the light and shadow effect of the flickering flame is formed, the flame light-emitting part adopts random PWM dimming to simulate the irregular brightness change when the real candle burns. The double-layer structure design forms a visual contrast between the flame simulation area (upper part) and the stable lighting area (lower part), the conical structure of the flame cover and the burning simulation area of the lamp cover jointly constitute a three-dimensional light and shadow space, and the simulation of the real degree is improved.

[0018] 2. Easy to assemble, the clamping mechanism adopts L-shaped groove and protrusion cooperation (horizontal groove depth > protrusion amount), which ensures the assembly of the flame cover and the connecting seat, and improves the torsional strength by more than 40%, the interference fit ring assembly structure (interference amount of 0.05-0.1mm between the plug-in pipe and the groove) realizes IP565 level dustproof and waterproof, and the continuous cylindrical surface design of the base step edge and the lamp cover makes the eccentricity of the overall structure ≤0.3mm.

[0019] 3. Modular maintenance design, the axial through hole and the wire hole form a standardized assembly channel, the length of the lamp cover can be changed as needed, the whole lamp bar assembly can be replaced, the light-transmitting pipe is made of PC or PMMA material (light transmittance ≥92%), and the interfaces of various components are standardized designed (tolerance ±0.1mm). BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0021] Figure 1 is a schematic diagram of the decomposition structure of the electronic candle of the embodiment 1 of the present application;

[0022] Figure 2 is a schematic diagram of the structure of the electronic candle of the embodiment 1 of the present application;

[0023] Figure 3 is a schematic diagram of part of the structure of the electronic candle of the embodiment 1 of the present application;

[0024] Figure 4 is a schematic diagram of the structure of the flame cover and the connecting seat of the electronic candle of the embodiment 1 of the present application;

[0025] Figure 5a is a schematic diagram of the structure of the lamp panel of the electronic candle of the embodiment 1 of the present application;

[0026] Figure 5b is a schematic diagram of another view of the structure of the lamp panel of the electronic candle of the embodiment 1 of the present application;

[0027] Figure 6 is a structural schematic diagram of the electronic candle of the embodiment 1 of the present application;

[0028] Figure 7 is a structural schematic diagram of the lamp holder, the connecting wire and the connecting seat of the electronic candle of the embodiment 1 of the present application;

[0029] Figure 8 is a block diagram of the electrical connection between the controller and the lamp strip of the electronic candle of the embodiment 1 of the present application;

[0030] Figure 9 is a disassembled structural schematic diagram of the electronic candle of the embodiment 2 of the present application.

[0031] Reference signs: lamp holder 1, annular assembly groove 12, external thread 13, conductive terminal 14, insulating base 15, lamp strip 2, flame light-emitting part 21, white light part 22, lamp panel 2a, upper section of lamp panel 21a, lower section of lamp panel 22a, warm color light LED lamp bead 211a, white light LED lamp bead 221a, flame cover 3, clamping protrusion 31, light-transmitting tube 4, connecting seat 5, clamping groove 51, axial through hole 52, wire passing hole 53, base 6, annular step edge 61, lamp shade 7, candle burning simulation area 71, non-burning simulation area 72, annular plug-in tube 73, annular fitting part 74, connecting wire 8, controller 9, first controller 91, second controller 92. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0033] Embodiment 1

[0034] Please refer to Figure 1 , Figure 2 and Figure 3 , the electronic candle comprises a lamp holder 1, a lamp strip 2, a flame cover 3, a light-transmitting tube 4, a connecting seat 5, a base 6 and a lamp shade 7.

[0035] The lamp holder 1 is used for connecting an external power supply lamp holder, and the upper end of the lamp holder 1 is provided with an external thread 13 adopting an E27 standard thread (an outer diameter of 27 mm). The conductive terminal 14 is a nickel-plated copper alloy (a thickness of 0.3 mm), and the insulating base 15 has a diameter of 29 mm.

[0036] The lamp strip 2 is arranged in an axial direction, and comprises a flame light-emitting part 21 and a colored light part 22 located below the flame light-emitting part.

[0037] The flame cover 3 is in a conical structure, is made by injection molding, and is sleeved on the flame light part 21 of the lamp strip 2.

[0038] The light transmission tube 4 is in a hollow tubular structure, is sleeved on the colored light part 22 of the lamp strip 2, and is made of a full transparent material.

[0039] The connecting seat 5 has an axial through hole 52, one end of which is clamped with the bottom end of the flame cover 3, and the other end is inserted with the upper end of the light transmission tube 4.

[0040] The base 6 is connected to the lower end of the light transmission tube 4.

[0041] The lamp cover 7 is arranged between the lamp holder 1 and the base 6, the upper part of the lamp cover 7 forms a candle burning simulation area 71 corresponding to the flame cover 3, and the lower part of the lamp cover 7 forms a non-burning simulation area 72 corresponding to the light transmission tube 4.

[0042] As shown in Figure 4 , the conical outer surface of the flame cover 3 is distributed with wavy concave-convex lines in the form of simulated flame, and the bottom periphery of the flame cover 3 is uniformly provided with four radially protruding clamping protrusions 31 with a protruding amount of 1.2 mm. Four L-shaped clamping grooves 51 are formed on the upper part of the inner wall of the axial through hole 52 of the connecting seat 5, and the transverse groove depth is 1.5 mm. Align the four clamping protrusions 31 at the bottom of the flame cover 3 with the four L-shaped clamping grooves 51 of the connecting seat 5, screw the flame cover 3, make the protrusions enter the transverse groove, and apply a torque of 3 N·m for locking.

[0043] As shown in Figure 5a and Figure 5b , the lamp strip 2 selects a flat strip-shaped lamp panel 2a, the lamp panel 2a is customized as a PCB board, the lamp panel 2a is divided into an upper lamp panel section 21a and a lower lamp panel section 22a along the length direction, and the width of the upper lamp panel section 21a is smaller than that of the lower lamp panel section 22a. The front and back surfaces of the upper lamp panel section 21a are attached with warm light LED beads 211a along the length direction, and the color temperature is 2200 K. The front and back surfaces of the lower lamp panel section 22a are parallelly arranged with white light LED beads 221a along the length direction, and the color temperature is 6500 K.

[0044] It should be noted that the LED beads on the front and back surfaces of the upper lamp panel section 21a and the lower lamp panel section 22a are not limited to warm light LED beads and white light LED beads, but any kind of light-emitting beads can be selected, and different color light transmission materials of the light transmission tube 4 and the lamp cover 7 can be used to simulate candle burning.

[0045] As shown in Figure 6As shown, the lower end of the lamp holder 1 is formed with an annular assembly groove 12 with an axial depth of 3mm, and the upper end of the lamp shade 7 is provided with an annular insertion tube 7 with an outer diameter that is in interference fit with the groove width of the annular assembly groove 12, so as to connect the upper end of the lamp shade 7 with the lower end of the lamp holder 1.

[0046] An annular step edge 61 is formed at the bottom end of the base 6 and extends outward in the circumferential direction, and the upper surface of the annular step edge 61 is in abutting fit with the bottom surface of the lower end annular fit part 74 of the lamp shade 7, and the side wall of the annular step edge 61 is flush with the side wall of the lamp shade 7 to form a continuous cylindrical surface.

[0047] As shown, the connecting wires 8 are two, and the first end of each connecting wire 8 is welded to the positive and negative terminals of the lamp holder 1, respectively; the through holes 53 are provided on both sides of the axial through hole 52 of the connecting seat 5, and the second end of the connecting wire 8 passes through the through hole 53 and is connected to the input pad of the lamp strip 2 in a anti-disconnection manner. Figure 7

[0048] As shown, the lamp strip 2 is electrically connected to the controller 9, and the controller 9 includes a first control unit 91 and a second control unit 92. The first control unit 91 is connected to the flame light part 21 through a PWM dimming circuit and is configured to drive the flame light part 21 to generate random brightness fluctuations at a frequency of 0.5-2Hz, and the brightness fluctuation range is 30%-70% of the nominal value. The second control unit 92 is connected to the colored light part 22 through a constant current driving circuit and is configured to maintain the brightness of the colored light part 22 within ±5% of the nominal value. Figure 8

[0049] Dynamic flame simulation

[0050] First control unit configuration parameters:

[0051] PWM frequency: 1.2Hz (period 833ms);

[0052] Duty cycle random algorithm: changes in the range of 15%-85% according to Poisson distribution;

[0053] Brightness gradient: the top LED brightness fluctuation amplitude is ±45%, and gradually decays to the bottom ±10% step by step;

[0054] Actual effect: in a dark room environment (illumination ≤1lx), the illumination fluctuation range is 2-15lx measured at a distance of 30cm from the flame cover.

[0055] Example 2

[0056] As shown, Figure 9 ​​As shown, the electronic candle provided in Embodiment 2 is different from that in Embodiment 1 in that the lamp holder 1, the lampshade 7 and the base 6 are all arranged in a 180° reversed manner. In use, the electronic candle in Embodiment 1 has the lamp holder at the upper end of the electronic candle and is vertically hung. In contrast, the electronic candle in this embodiment has the lamp holder at the lower end of the electronic candle and is vertically placed on the ground socket.

[0057] In the present application, unless otherwise specified, the orientation words such as "up and down, left and right, front and back, inside and outside, and vertical and horizontal" contained in the terms only represent the orientation of the terms in the normal use state, or the common name understood by the skilled in the art, and should not be regarded as a limitation of the terms. At the same time, the ordinal terms such as "first", "second" and "third" do not represent the specific number and order, but are only used for the differentiation of the names. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device.

[0058] The above only describes the preferred embodiments of the present application and should not be used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An electronic candle, characterized in that, include: Lamp holder (1), used to connect to an external power supply lamp socket; The light strip (2) extends along the axial direction and includes a flame emitting part (21) and a colored light part (22) located below the flame emitting part; Flame cover (3), fitted onto the flame emitting part (21) of the lamp strip (2); The light-transmitting tube (4) has a hollow tubular structure and is fitted onto the colored light part (22) of the light strip (2); The connecting seat (5) has an axial through hole. One end of it is snapped into the bottom end of the flame cover (3), and the other end is inserted into the upper end of the light-transmitting tube (4) to divide the candle into a candle burning simulation area and a non-burning simulation area.

2. The electronic candle according to claim 1, characterized in that: It also includes a lampshade (7), which is fitted onto the flame cover (3), the connecting seat (5) and the light-transmitting tube (4). The upper part of the lampshade (7) forms a candle burning simulation section corresponding to the flame cover (3), and the lower part forms a non-burning simulation section corresponding to the light-transmitting tube (4).

3. The electronic candle according to claim 2, characterized in that: The lower end of the lamp head (1) has an annular mounting groove (12) with an axial depth of 2-5mm. The upper end of the lamp cover (7) is provided with an annular insertion pipe (73) whose outer diameter is interference-fitted with the groove width of the annular mounting groove (12). The lower end of the lamp cover (7) is connected to a base (6). The bottom end of the base (6) extends outward in the circumferential direction to form an annular step edge (61). The side wall of the annular step edge (61) is flush with the side wall of the lamp cover (7) to form a continuous cylindrical surface.

4. The electronic candle according to claim 1, characterized in that: The conical outer surface of the flame cover (3) is covered with wave-like textured patterns resembling flames, and at least three radially protruding snap-fit ​​protrusions (31) are provided at intervals around the bottom periphery of the flame cover (3). The upper part of the inner wall of the axial through hole of the connecting seat (5) is provided with an L-shaped snap-fit ​​groove (51) that matches the number and position of the snap-fit ​​protrusions (31). The transverse groove depth of the snap-fit ​​groove (51) is greater than the radial protrusion of the snap-fit ​​protrusions (31).

5. The electronic candle according to claim 1, characterized in that: The light strip (2) is a flat strip-shaped light plate (2a). The light plate (2a) is divided into an upper section (21a) and a lower section (22a) along its length. The width of the upper section (21a) is smaller than the width of the lower section (22a). Among them, multiple warm-colored LED beads (211a) are arranged on both sides of the upper section (21a) of the lamp board along the length direction; The lower section (22a) of the lamp panel has multiple white LED beads (221a) arranged parallel to each other along the length direction on both sides.

6. The electronic candle according to claim 1, characterized in that: The lamp holder (1) has an external thread (13) at its upper end. The conductive terminal (14) of the external thread (13) is made of nickel-plated copper alloy. The outer diameter of the insulating substrate (15) of the lamp holder (1) is larger than the outer diameter of the lamp cover (7).

7. The electronic candle according to claim 1, characterized in that: It also includes two independent insulated connecting wires (8), the first ends of which are respectively welded to the positive terminal and the negative terminal of the lamp holder (1); The axial through hole (52) of the connector (5) is provided with wire holes (53) on both sides. After the second end of the connecting wire (8) passes through the wire hole (53), it forms an anti-detachment connection with the input pad of the lamp strip (2).

8. The electronic candle according to claim 1, characterized in that: It also includes a controller (9) electrically connected to the light strip (2), the controller (9) comprising: The first control unit (91) is connected to the flame light-emitting part (21) via a PWM dimming circuit and is configured to drive the flame light-emitting part (21) to generate random brightness fluctuations at a frequency of 0.5-2Hz, with the brightness fluctuation range being 30%-70% of the nominal value. The second control unit (92) is connected to the colored light section (22) via a constant current drive circuit and is configured to maintain the brightness of the colored light section (22) within ±5% of the nominal value.

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