A flame simulation device and a simulated electric fireplace

Abstract

The present invention discloses a flame simulation device. It includes a light source, at least one light-transmitting rotating body and an imaging plate; the light source emits a first light ray group; the light-transmitting rotating body is arranged in the light path of the first light ray group in a rotatable manner, and a number of light condensing blocks are provided on each light-transmitting rotating body, and these a number of light condensing blocks convert the first light ray group into a second light ray group; the imaging plate is fixedly arranged in the light path of the second light ray group. The present invention also discloses a simulated electric fireplace. The present invention uses the light source to emit a first light ray group to pass through the light-transmitting rotating body and the light condensing blocks thereon to be converted into a second light ray group, so that the angles of the second light ray group formed by the interweaving of a variety of different light paths are constantly changing, and thus the brightness and size of the light spots formed at different positions on the imaging plate are different, and finally the effects of the fire gradually brightening and dimming and flickering are simulated, improving the realism and three-dimensional sense of the simulated fuel combustion.

Description

Technical Field

[0001] The present invention relates to the technical field of simulated electric fireplaces, and in particular to a flame simulation device and a simulated electric fireplace capable of simulating the flickering of flames. Background Art

[0002] As a decorative device integrating modern optical principles, the simulated electric fireplace has a more prominent decorative effect and is the most widely spread. It uses electric energy as the energy source, has no open flame, relies on the reflection of light to generate two-dimensional or three-dimensional flames, and is paired with simulated charcoal to produce a visual effect of simulated flame combustion, with a realistic effect. Compared with traditional fireplaces, electric fireplaces do not produce soot, odor, and noise during combustion, can not only save costs, but also bring an elegant and comfortable viewing effect, and enjoy the warmth and comfort brought by the electric fireplace.

[0003] In the prior art, the traditional method of a simulated electric fireplace is to set a light source at the bottom or side wall of the simulated fuel to irradiate the simulated fuel to produce a visual effect of combustion. In order to make the effect of the simulated fuel realistic, a reflective component with a number of irregular reflective blades is usually set, and the reflective component is set on a synchronous motor and rotates with the synchronous motor. The light source irradiates the rotating reflective blades and then reflects onto the flame imaging screen to present the effect of flame combustion. However, the dynamic effect of the sparks generated by this method is not good, and it cannot reflect the real effect of actual combustion. The picture is relatively rigid, resulting in insufficient three-dimensional sense and realism. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a flame simulation device and a simulated electric fireplace that can simulate the effect of flame flickering.

[0005] The present invention provides a first flame simulation device, including: a light source, at least one light-transmitting rotating body, and an imaging plate. The light source emits a first light beam group; the light-transmitting rotating body is rotatably arranged in the optical path of the first light beam group, and a number of light-condensing blocks are provided on each light-transmitting rotating body, and the number of light-condensing blocks converts the first light beam group into a second light beam group; the imaging plate is fixedly arranged in the optical path of the second light beam group.

[0006] Compared with the prior art, the present invention uses the light source to emit a first light beam group to pass through the light-transmitting rotating body and the light-condensing blocks thereon to be converted into a second light beam group, and then projects it onto the imaging plate to form a light spot. Since the light-transmitting rotating body rotates, the first light beam group and the light-transmitting rotating body move relative to each other, so that the angle of the formed second light beam group changes continuously, that is, an irregularly changing second light beam group is formed. Finally, the light spot formed on the imaging plate will change in shape, position, and brightness, so as to be able to simulate the effect of the firelight gradually brightening and dimming and surging, and improve the realism and three-dimensional sense of the simulated fuel combustion.

[0007] Further, the light-transmissive revolving body is a hollow sphere; the plurality of light-condensing blocks are closely arranged along the circumferential direction of the light-transmissive revolving body to form a light-condensing block ring, and are arranged in a plurality of light-condensing block rings along the axial direction of the light-transmissive revolving body. Since the light-transmissive revolving body is a hollow sphere and the surface of the hollow sphere is a curved surface, the angles of each light-condensing block attached to the hollow sphere are different, and the distances from the light emitted by the light source to each light-condensing block are different, making the angle change of the second light group formed by refraction more diverse, and finally irradiating the imaging plate to form a light spot with a more irregular position change.

[0008] Further, the number of the light-transmissive revolving bodies is at least two, and the at least two light-transmissive revolving bodies are arranged coaxially and at intervals, and are connected by a connecting part between the two light-transmissive revolving bodies.

[0009] Further, the connecting part is a light-impermeable connecting part. By providing the light-impermeable connecting part, the interference between the lights passing through each light-transmissive revolving body can be reduced.

[0010] Further, the light-transmissive revolving body is a cylinder; the plurality of light-condensing blocks are closely arranged along the circumferential direction of the light-transmissive revolving body to form a light-condensing block ring, and are arranged in a plurality of light-condensing block rings along the axial direction of the light-transmissive revolving body.

[0011] Further, a light-shielding plate is provided between two adjacent light-condensing block rings.

[0012] Further, the light source includes at least one row of LED lamp groups arranged at equal intervals by a plurality of LED lamps, and the LED lamp groups are arranged along the axial direction of the light-transmissive revolving body and are directly opposite to the light-transmissive revolving body.

[0013] The number of the light-transmissive revolving bodies is three, and the LED lamp group corresponding to the light-transmissive revolving body located in the middle includes blue light LED lamps and orange-red light LED lamps.

[0014] Further, it further includes a flame plate, and the flame plate is provided with a plurality of light-transmissive holes in the shape of flames, which is arranged between the light-transmissive revolving body and the imaging plate, and the second light group emitted from the light-transmissive revolving body passes through the light-transmissive holes of the flame plate and is projected on the imaging plate.

[0015] Further, it further includes a motor that drives the light-transmissive revolving body to rotate.

[0016] The present invention also provides a simulated electric fireplace, including a housing, a window is provided on the front side of the housing, and a flame simulation device is provided in the inner cavity of the housing.

[0017] The present invention also provides a flame simulation device, comprising: a light source, a rotatable light-transmitting body, and an imaging plate. The light source emits a first light beam group, which forms a second light beam group after being projected into the light-transmitting body, and the second light beam group is projected onto the imaging plate for imaging.

[0018] Further, a plurality of light mixing blocks are provided on the light-transmitting body, and the first light beam group forms a second light beam group after being projected into the light-transmitting body and the light mixing blocks.

[0019] Further, the light mixing block is a convex lens.

[0020] Further, the light mixing block is a concave lens; or, the plurality of light mixing blocks are a combination of convex lenses and concave lenses. When the first light beam group generated by the light source passes through the light mixing blocks on the light-transmitting body, multiple reflections and refractions occur, as well as the focusing effect of the convex lens and / or the diverging effect of the concave lens, forming a second light beam group in which light rays with multiple different light paths are intertwined, and when the light-transmitting body rotates, a visual effect of flickering like a simulated flame burning is generated on the imaging plate.

[0021] Further, the light-transmitting body is a cylinder; or the light-transmitting body is a rotating body formed by an arched arc.

[0022] Further, at least two coaxial light-transmitting bodies are further included. The light-transmitting bodies are connected by a connecting portion, the axis of the light-transmitting body passes through the connecting portion, and the light-transmitting body and the connecting portion can rotate around the axis.

[0023] Further, the light-transmitting body is hollow, and the light mixing blocks are arranged on the outer wall and / or inner wall of the light-transmitting body; or, the light-transmitting body is solid, and the light mixing blocks are arranged on the outer wall of the light-transmitting body.

[0024] Further, the plurality of light mixing blocks are closely arranged along the circumferential direction of the light-transmitting body to form a light mixing block ring, and are arranged in several light mixing block rings along the axial direction of the light-transmitting body.

[0025] Further, a light blocking plate is provided between adjacent light mixing block rings.

[0026] Further, the light source includes at least one row of LED lamp groups in which a plurality of LED lamps are arranged at equal intervals, and the LED lamp groups are arranged along the axial direction of the light-transmitting body and are directly opposite to the light-transmitting body.

[0027] Further, a flame plate is further included. The flame plate is provided with a plurality of light-transmitting holes in the shape of flames, and is arranged between the light-transmitting body and the imaging plate. The second light beam group emitted from the light-transmitting body and the light mixing blocks passes through the light-transmitting holes of the flame plate and is then projected onto the imaging plate.

[0028] Further, the flame plate is an arc-shaped plate, which surrounds the periphery of the light-transmitting body in a revolving manner.

[0029] Furthermore, it further includes a motor, and the motor drives the light-transmitting body to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the simulated electric fireplace according to Embodiment 1 of the present invention.

[0031] Figure 2 It is a schematic diagram of a partial structure of the simulated electric fireplace according to Embodiment 1 of the present invention.

[0032] Figure 3 It is a structural diagram of the light-transmitting rotating body according to Embodiment 1 of the present invention.

[0033] Figure 4 According to the present invention Figure 3 Cross-sectional view of the light-transmitting rotating body in the A-A direction.

[0034] Figure 5 According to the present invention Figure 3 Cross-sectional view of the light-transmitting rotating body in the B-B direction.

[0035] Figure 6 It is the first working principle diagram of the light-transmitting rotating body according to Embodiment 1 of the present invention.

[0036] Figure 7 It is the second working principle diagram of the light-transmitting rotating body according to Embodiment 1 of the present invention.

[0037] Figure 8 It is a schematic diagram of the overall structure of the simulated electric fireplace according to Embodiment 2 of the present invention.

[0038] Figure 9 It is a schematic diagram of a partial structure of the simulated electric fireplace according to Embodiment 2 of the present invention.

[0039] Figure 10 It is a structural diagram of the light-transmitting rotating body according to Embodiment 2 of the present invention.

[0040] Figure 11 It is another schematic diagram of the overall structure of the simulated electric fireplace according to Embodiment 2 of the present invention.

[0041] Figure 12 It is another schematic diagram of the overall structure of the simulated electric fireplace according to Embodiment 1 of the present invention.

[0042] Figure 13 It is an optical path diagram when two convex lenses of the present invention are connected.

[0043] Figure 14 It is an optical path diagram when two concave lenses of the present invention are connected.

[0044] Among them, the reference numerals are: 10 - housing, 20 - simulated fuel, 31 - light source, 31a - first light beam group, 31b - second light beam group, 32 - light-transmitting rotating body, 33 - imaging plate, 33a - light-transmitting plate, 34 - flame plate, 35 - hollow cylinder, 311 - strip-shaped circuit board, 321 - light condensing block, 321a - lens group, 322 - support frame, 323 - motor, 324 - light-impermeable connecting part, 341 - light-transmitting hole, 342 - light-blocking piece, 351 - cover body, 352 - bushing, 353 - light-blocking plate, F - focal point, a1, a2 - convex lenses, b1, b2 - light spots. Detailed implementation manners

[0045] Example 1

[0046] Please refer to Figure 1 and Figure 2 simulated electric fireplace of this embodiment includes a housing 10, a simulated fuel 20 and a flame simulation device disposed in the housing 10; a window communicating with the inner cavity of the housing 10 is provided on the front side of the housing 10, and the flame simulation device is provided in the inner cavity of the housing 10.

[0047] The flame simulation device includes a light source 31, a light-transmitting rotating body 32 and an imaging plate 33 arranged in the same light path. After the light source 31 is powered on, it emits a first light beam group 31a. The light-transmitting rotating body 32 is rotatably arranged in the light path of the first light beam group 31a. A light condensing block 321 is provided on the light-transmitting rotating body 32, and the plurality of light condensing blocks 321 convert the first light beam group 31a into a second light beam group 31b; the imaging plate 33 is fixedly arranged in the light path of the second light beam group 31b.

[0048] Specifically, there are three light-transmitting rotating bodies 32. The three light-transmitting rotating bodies 32 are arranged on the same axis and integrally formed on the same rotating body. Adjacent two light-transmitting rotating bodies 32 are connected by a light-impermeable connecting part 324, that is, the three light-transmitting rotating bodies 32 are integrally formed into a rotating body through two light-impermeable connecting parts 324. Preferably, the light-impermeable connecting part 324 is a cylinder with a diameter slightly smaller than that of the hollow sphere. The surface of the cylinder is provided with a frosted surface, and the function of the frosted surface is to reduce the mutual interference between the light rays passing through each light-transmitting rotating body 32. Both ends of the rotating body are installed on the bottom plate of the housing 10 through two oppositely arranged support frames 322. Specifically, the rotating shafts exposed outside both ends of the rotating body are respectively hinged and passed through the two support frames 322. A motor 323 is provided outside one of the support frames 322. A bushing is provided on the rotating shaft at one end of the rotating body and sleeved on the rotating shaft of the motor 323 through the bushing, so that the rotating body rotates between the two support frames 322 along with the motor 323.

[0049] Each of the light-transmitting rotating bodies 32 is a hollow curved surface shell 10. Specifically, please refer to Figure 3 , Figure 4 and Figure 5 . The light-transmitting rotating body 32 is a hollow sphere, the generatrix of which is a single-peak curve segment, and it is made of a transparent material; preferably, the hollow sphere is processed from a hard transparent plastic with excellent optical properties, such as polymethyl methacrylate and other materials. Further, a plurality of light condensing blocks 321 are provided on the light-transmitting rotating body 32. It should be noted that the light condensing blocks 321 can be provided on the outer surface of the light-transmitting rotating body 32 or on the inner surface of the light-transmitting rotating body 32. The principle is to use the refraction and light condensing effect of a convex lens to change the optical path of the first light group to convert it into a second light group. In this embodiment, the light condensing blocks 321 are provided on the inner surface of the light-transmitting rotating body 32. Specifically, the light condensing blocks 321 are preferably convex lenses. The convex lens is a lens with a thicker center and thinner edges, and can be any one or more of double-convex, plano-convex, and positive meniscus shapes; its shape can be any one of triangle, circle, semi-circle, ellipse, and rhombus. In this embodiment, the convex lenses are closely arranged in a light condensing block circle along the circumferential direction of the hollow sphere, and several light condensing block circles are arranged along the axial direction of the hollow sphere. The convex lenses are preferably meniscus lenses with various shapes, and the concave surfaces of the meniscus lenses are integrally formed with the inner surface of the light-transmitting rotating body 32, so that the convex parts of the convex lenses face inwards, and the outer surface of the light-transmitting rotating body 32 is in a smooth state.

[0050] Further, the simulated fuel 20 is arranged close to the viewing window, preferably simulated charcoal. Specifically, a plurality of simulated charcoals are stacked and inclined towards the inner cavity. The simulated charcoal is made of light-transmitting resin and is grayish-black. The rotating body is arranged behind the simulated fuel 20 and has a height lower than that of the simulated fuel 20. When looking horizontally into the inner cavity of the shell 10 from the viewing window, the simulated fuel 20 can be seen while the rotating body cannot be seen.

[0051] Further, in this embodiment, the light source 31 includes three strip-shaped circuit boards 311. Along the length direction of each strip-shaped circuit board 311, there is at least one row of LED lamp groups in which a number of LED lamps are arranged at equal intervals. Each light-transmitting rotating body 32 corresponds to one strip-shaped circuit board 311, and each strip-shaped circuit board 311 is parallel to the axis of the rotating body. Among them, the strip-shaped circuit board 311 corresponding to the light-transmitting rotating body 32 located in the middle is generally in the same plane perpendicular to the ground as the axis of the rotating body, that is, this strip-shaped circuit board 311 is arranged directly below the light-transmitting rotating body 32 in the middle, and the LED lamps on it at least include blue LED lamps and orange-red LED lamps; the light emitted by the LED lamp group on this strip-shaped circuit board 311 passes through the second light group 31b converted by the light-transmitting rotating body 32 in the middle and simultaneously irradiates on the bottom of the simulated fuel 20 and the imaging plate 23. Since the simulated fuel 20 is made of light-transmitting resin, when looking at the simulated fuel 20 from the viewing window, it can be observed that there are flickering lights on the simulated charcoal, thereby simulating the flickering effect when charcoal burns. In addition, the two strip-shaped circuit boards 311 of the two light-transmitting rotating bodies 32 corresponding to the two ends are located on one side of the light-transmitting rotating body 32, so that the light emitted by the LED lamp groups on them passes through the second light group 31b converted by the two light-transmitting rotating bodies 32 at the two ends and most of the light irradiates on the imaging plate 33. Preferably, in this embodiment, a flame plate 34 is further provided at the top of the rotating body. One end of the flame plate 34 is connected to the imaging plate, and the other end is fixed to the inner side of the simulated fuel, thus being erected on the top of the rotating body and not rotating with the rotating body. The flame plate 34 is provided with a number of light-transmitting holes 341 in the shape of flames. By setting the size and position of the light-transmitting holes 341, the position of the second light group 31b emitted through the light-transmitting rotating body 32 and irradiating on the simulated fuel 20 or the imaging plate 33 can be adjusted. It should be noted that in this embodiment, since both sides of the housing 10 are hollowed out, the light in the second light group 31b will irradiate outside the housing through the hollows on both sides. In order to prevent the light from irradiating out and affecting the use of the user, at least two light-blocking sheets 342 protruding and perpendicular to the flame plate are installed at positions close to the hollows on both sides of the housing in this embodiment.

[0052] Further, the imaging plate 33 is the rear shell plate of the housing 10, and the rear shell plate is located behind the rotating body. Preferably, a wallpaper with brick patterns is pasted on the rear shell plate. Using the rear shell plate directly as the imaging plate 33 can reduce costs.

[0053] The process and principle of simulating the generation of flame will be specifically described below. Since a circle of light condensing blocks 321 are closely arranged along the circumferential direction on the surface of the light-transmitting rotating body 32 and are closely arranged into several circles of light condensing block circles along the circumferential direction of the hollow sphere, the first divergent light ray group 31a emitted by the LED lamp is reflected and / or refracted multiple times on the light-transmitting rotating body 32 and finally needs to pass through the convex lenses on the inner surface of the light-transmitting rotating body 32 twice in sequence to be emitted to form the second light ray group 31b. During this process, please refer to Figure 6 , and the maximum cross-section perpendicular to the axial direction of the light-transmitting rotating body 32 is selected here to illustrate the principle of flame generation in the vertical direction. In the vertical direction, the first light ray group 31a emitted by the LED lamp is divergent light rays. This light first passes through multiple convex lenses on one side of the light-transmitting rotating body 32 and then enters its interior. Under the refraction of the convex lenses, the light rays of the first light ray group 31a converge. Subsequently, the light rays inside the light-transmitting rotating body are emitted through different convex lenses (a1, a2) on the light-transmitting rotating body 32 respectively. Since the light-transmitting rotating body 32 is a spherical surface, the distances between the centers of the convex lens a1 and the convex lens a2 and the rear imaging plate 33 are different. Therefore, the focal points F of the convex lens a1 and the convex lens a2 are also at different distances from the rear imaging plate 33. Assume that the distance between the center of the convex lens a1 and the rear imaging plate 33 is less than the distance between the center of the convex lens a2 and the rear imaging plate. Then, when the light passes through the convex lens a1, a part of the second light ray group 31b formed after focusing continues to propagate along the optical path. Since the focal point F of the convex lens a1 is closer to the rear imaging plate, it irradiates on the imaging plate to form a concentrated and bright light spot b1, and the size of the light spot b1 is small; when the light passes through the convex lens a2, another part of the second light ray group 31b formed, since the focal point F of the convex lens a2 is relatively farther from the rear imaging plate, it irradiates on the imaging plate to form a divergent and dim light spot b2, and the size of the light spot b2 is large. Thus, it can be seen that the shapes, positions, and brightnesses of the light spots b2 and b1 formed in the longitudinal direction of the imaging plate are all different. Similarly, in the horizontal direction, please refer to Figure 7, here, two cross-sections of the light-transmitting rotating body 32 parallel to the axis are selected to illustrate the principle of flame generation in the horizontal direction. A number of convex lenses are distributed on a horizontal cross-section of the light-transmitting rotating body 32. Due to the shape setting of the convex lenses, the number of convex lenses on different cross-sections will be different. However, the core principle is that the centers of each convex lens are at different distances from the imaging plate behind, resulting in different distances between the focal points and the imaging plate, thus generating light spots of different sizes and brightnesses. It can be seen that since a number of convex lenses are closely arranged on the inner surface of the light-transmitting rotating body, and the distance between each convex lens and the imaging plate is different, the shapes and brightnesses of the light spots formed by the irradiation of a number of second light groups 31b on the imaging plate are also different. And because the light-transmitting rotating body rotates with the motor, as the rotation angle changes, the positions of the light spots of different brightnesses and shapes formed in the transverse direction of the imaging plate will change, and the effect of sparks floating upward can be observed visually, so as to be able to simulate the effect of the firelight gradually brightening and dimming and surging.

[0054] During use, after the light source is powered on, it emits the first light group 31a, which irradiates on the light-transmitting rotating body rotating with the motor, and passes through the convex lenses on the light-transmitting rotating body twice in sequence to form the second light group 31b with an angle change, and finally projects onto the rear shell plate to form a light spot. Since the angles of each convex lens and the distances from the rear shell plate are different, the shapes, brightnesses and positions of the formed light spots change, thus presenting the effect of the flame gradually brightening and dimming and the sparks surging on the rear shell plate.

[0055] Example 2

[0056] Embodiment 2 of the simulated electric fireplace of the present invention is basically the same as Embodiment 1, and the only difference is that: the structure of the light-transmitting rotating body is different.

[0057] In Embodiment 2, please refer to Figure 8 、 Figure 9 and Figure 10 , the light-transmitting rotating body is a hollow cylinder 35 with a straight-line segment as the generatrix. Specifically, the barrel of the hollow cylinder 35 is made of a hard transparent material with excellent optical properties. Two covers 351 are respectively sleeved at both ends of the hollow cylinder 35. Rotating shafts are provided in the middle of the outer sides of the two covers. And a shaft sleeve 352 is provided on the rotating shaft of one of the covers. The rotating shafts of the two covers 351 are respectively rotatably inserted through two relatively arranged support frames 322, and are connected to the motor 323 outside one of the support frames 322 through the shaft sleeve 352, so that the hollow cylinder 35 can rotate between the two support frames 322.

[0058] Further, a plurality of condenser blocks 321 are provided on the inner surface of the hollow cylinder 35. The condenser blocks 321 are convex lenses, and the convex lenses are preferably elliptical meniscus lenses. The concave surface of the meniscus lens is attached to the inner surface of the hollow cylinder 35 by an integral molding method, so that the protruding part faces inward. The plurality of condenser blocks 321 are closely arranged in a circle along the circumferential direction of the hollow cylinder 35 to form a lens group 321a, and are arranged at equal intervals along the axial direction of the hollow cylinder into nine lens groups 321a. Preferably, a light shielding plate 353 is provided between two adjacent lens groups 321a. Preferably, the light shielding plate 353 is a disc slightly smaller in diameter than the hollow cylinder 35. The disc is embedded in the barrel of the hollow cylinder 35 by means of screws, clamping, etc., and divides the barrel of the hollow cylinder 35 into a plurality of independent and equally spaced spaces, and each lens group 321a is provided on the inner surface of each independent space.

[0059] Correspondingly, in this Embodiment 2, the light source 31 includes a strip-shaped circuit board 311, and at least one row of LED lamp groups arranged at equal intervals by a plurality of LED lamps is provided on the strip-shaped circuit board 311 along the length direction. The length direction of the strip-shaped circuit board 311 is parallel to the rotation axis of the hollow cylinder 35; and the length of the hollow cylinder 35 is substantially the same as the length of the strip-shaped circuit board 311. Further, the plane where the strip-shaped circuit board 311 is located forms an acute angle with the plane where the imaging board 33 is located.

[0060] In this embodiment, a flame plate 34 is provided in the optical path of the second light beam group 31b between the hollow cylinder and the imaging board 33. The shape and structure of the flame plate 34 are also different from those in Embodiment 1. Specifically, the flame plate 34 is an arc plate; the flame plate 34 is fixed to the support frame 322 corresponding to the hollow cylinder; the length of the flame plate 34 is not less than the length of the hollow cylinder. The radius of the arc plate is the same as the radius of the barrel of the hollow cylinder 35, the length of the arc plate is not less than the length of the hollow cylinder 35, and the arc plate can cover the outside of the hollow cylinder 35. And, one side of the arc plate is fixed to the imaging board 33 by screws, and the two ends are respectively fixed to the tops of the two support frames 322 by screws. Thus, the arc plate is fixedly installed outside the hollow cylinder 35 and does not rotate with it. Further, a plurality of light-transmitting holes 341 are provided on the flame plate 34. The light-transmitting holes 341 are in the shape of flames. After the generated second light beam group 31b is shaped by the flame plate 34 with light-transmitting holes 341 in the shape of flames, it is projected onto the imaging board 33 to present a realistic flame shape.

[0061] In the second embodiment 2, the process and principle of simulating the generation of flames are the same as those in the first embodiment 1. That is, the first light beam group 31a emitted by the light source passes through the convex lenses on the light-transmitting rotating body twice successively to form the second light beam group 31b. Since the distance between each convex lens provided on the light-transmitting rotating body and the imaging plate is different, the shape, brightness, and position of the finally formed light spots are all different.

[0062] Example 3

[0063] Please refer to Figure 11 and Figure 12 , the third embodiment of the simulated electric fireplace of the present invention is basically the same as the first and second embodiments, and the only difference lies in: the position and structure of the imaging plate are different. In the third embodiment, the imaging plate is a light-transmitting plate 33a, and the light-transmitting plate 33a is arranged between the simulated fuel 20 and the light-transmitting rotating body, and is arranged behind the simulated fuel 20 and in the middle of the housing 10. Preferably, the light-transmitting plate 33a is a semi-transparent plate.

[0064] During use, after the light source is powered on, it emits the first light beam group and irradiates it on the light-transmitting rotating body that rotates with the motor, and passes through the convex lenses on the light-transmitting rotating body 32 twice successively to form the second light beam group 31b with changing angles. Finally, it is projected onto the light-transmitting plate in the middle of the housing to form a light spot. Since the angles of each convex lens and the distance from the rear housing plate are different, the shape, brightness, and position of the formed light spots change, so that the effect of the flame gradually brightening and dimming and the sparks flickering is presented on the light-transmitting plate.

[0065] Compared with the prior art, in the present invention, the light source is arranged outside the light-transmitting rotating body. The first light beam group emitted by the light source passes through the light-transmitting rotating body provided with the light-concentrating blocks to be converted into the second light beam group, and then is projected onto the imaging plate to form a light spot. Since the light-transmitting rotating body makes a rotational motion, a relative motion occurs between the first light beam group and the light-concentrating blocks, so that the reflection and / or refraction angles of the light in the second light beam group change continuously. Moreover, since the distances between the foci of the light-concentrating blocks and any positions on the imaging plate are different, the brightness and size of the light spots formed by the second light beam group at different positions on the imaging plate are different. Finally, the light spots formed by the irradiation of the second light beam group on the imaging plate will change in shape, position, and brightness, so that the effect of the firelight gradually brightening and dimming and flickering can be simulated, and the authenticity and three-dimensional sense of the combustion of the simulated fuel are improved. In addition, in the present invention, the light source is arranged outside the light-transmitting rotating body, which is beneficial to the heat dissipation of the light source and convenient for replacement; at the same time, the distance between the light source and the light-transmitting rotating body can be adjusted flexibly and without limitation to obtain the best visual effect of the flame flickering.

[0066] Example 4

[0067] In Embodiment 4 of the present invention, the simulated electric fireplace is basically the same as that in Embodiments 1-3, except for the structure of the light-transmitting body in the flame simulation device. The flame simulation device in Embodiment 4 includes a light source, a rotatable light-transmitting body, and an imaging plate. The light source emits a first light beam group, and after the first light beam group is projected into the light-transmitting body, a second light beam group is formed, and the second light beam group is projected onto the imaging plate to form an image.

[0068] Specifically, the light-transmitting body has a symmetric or asymmetric structure. In Embodiment 4, the light-transmitting body is a rotating body, the generatrix of which is an arched arc, and it is formed by rotating around the line connecting the two ends of the arc or a straight line parallel to this line.

[0069] In Embodiment 1, the condenser block provided on the light-transmitting rotating body is a convex lens. In fact, when two convex lenses are connected, a concave lens structure is actually formed in the connection area C between them, as Figure 13 shown. Therefore, a concave lens can be provided on the light-transmitting body. When two concave lenses are connected, as Figure 14 shown, a convex lens structure is actually formed in the connection area D between them to produce a light-condensing effect. Therefore, in this embodiment, a concave lens, or a combination of a convex lens and a concave lens, can be provided on the surface of the light-transmitting body. The light forms a mixed light effect of reflection, refraction, light condensation, and light scattering between these convex lenses, concave lenses, or a combination of the two. Therefore, the concave lens, convex lens, or a combination of the two provided on the light-transmitting body is defined as a mixed light block.

[0070] The light-transmitting body can be solid or hollow. When the light-transmitting body is hollow, the mixed light blocks are provided on the outer wall and / or inner wall of the light-transmitting body. When the light-transmitting body is solid, the mixed light blocks are provided on the outer surface of the light-transmitting body. The mixed light blocks are arranged closely along the circumferential direction of the light-transmitting body to form a mixed light block ring, and are arranged in several mixed light block rings along the axial direction of the light-transmitting body. When the first light beam group generated by the light source passes through the mixed light blocks on the light-transmitting body, multiple reflections and refractions occur, as well as the light-condensing effect of the convex lens and / or the light-scattering effect of the concave lens, forming a second light beam group in which light rays with multiple different light paths are intertwined. When the light-transmitting body rotates, a visual effect of flickering, simulating a burning flame, is produced on the imaging plate.

[0071] In addition, the light source includes at least one row of LED lamp groups arranged by a plurality of LED light-emitting chips. The LED lamp groups are arranged along the axial direction of the light-transmitting body and are directly opposite to the light-transmitting body.

[0072] Furthermore, in Embodiment 4, there are at least two coaxial light-transmitting bodies, and the two light-transmitting bodies are connected by a connecting part. The connecting part can be a light-transmitting connecting part or a non-light-transmitting connecting part. Specifically, the non-light-transmitting connecting part can be a frosted surface, and the light-transmitting connecting part can be made of light-transmitting plastic.

[0073] During use, the first light ray group emitted after the light source is powered on irradiates on the rotating light-transmitting body. After passing through the light-transmitting body and the light mixing blocks arranged on the light-transmitting body, the first light ray group undergoes multiple reflections, refractions, condensations and diffusions to form a second light ray group. The second light ray group is projected onto the imaging plate to form light and dark spots. Since the positions of each light mixing block on the light-transmitting body are different, and the distances from them to the imaging plate are also different, the shapes, brightnesses and positions of the formed spots will also change, and finally the effects of the flame gradually brightening and dimming and the flame flickering are presented on the imaging plate.

[0074] The present invention is not limited to the above embodiments. If various modifications or deformations of the present invention do not depart from the spirit and scope of the present invention, and provided that these modifications and deformations are within the scope of the claims of the present invention and equivalent technical scope, then the present invention also intends to include these modifications and deformations.

Claims

1. A flame simulation device, characterized in that, Comprising: A light source, the light source including at least one row of LED lamp groups in which a number of LED lamps are arranged at equal intervals, the light source emitting a first light beam group; At least one light-transmitting rotating body, the light-transmitting rotating body being arranged in a rotatable manner in the light path of the first light beam group, a number of light condensing blocks being provided on each light-transmitting rotating body, the number of light condensing blocks being closely arranged along the circumferential direction of the light-transmitting rotating body to form a light condensing block ring, and being arranged in a number of rings of light condensing block rings along the axial direction of the light-transmitting rotating body, the number of light condensing blocks converting the first light beam group into a second light beam group; the light condensing blocks being convex lenses; a light shielding plate being provided between two adjacent rings of light condensing blocks; and An imaging plate, the imaging plate being fixedly arranged in the light path of the second light beam group.

2. The flame simulation device according to claim 1, wherein The light-transmitting rotating body is a hollow sphere.

3. The flame simulation device according to claim 2, wherein The number of the light-transmitting rotating bodies is at least two, the at least two light-transmitting rotating bodies being arranged coaxially and at intervals, and the two light-transmitting rotating bodies being connected by a connecting part.

4. The flame simulation device according to claim 3, characterized in that, The connecting part is a non-light-transmitting connecting part.

5. The flame simulation device according to claim 1, wherein, The light-transmitting rotating body is a cylinder.

6. The flame simulation device according to any one of claims 2-5, wherein The LED lamp group is arranged along the axial direction of the light-transmitting rotating body and is directly opposite to the light-transmitting rotating body.

7. The flame simulation device according to claim 6, wherein The number of the light-transmitting rotating bodies is three, and the LED lamp group of the light-transmitting rotating body located in the middle correspondingly includes blue light LED lamps and orange-red light LED lamps.

8. The flame simulation device according to claim 6, characterized in that Further comprising a flame plate, the flame plate being provided with a number of light-transmitting holes in the shape of flames, which is arranged between the light-transmitting rotating body and the imaging plate, and the second light beam group emitted from the light-transmitting rotating body passes through the light-transmitting holes of the flame plate and is projected onto the imaging plate.

9. The flame simulation device according to claim 7 or 8, characterized in that, Further comprising a motor, which drives the light-transmitting rotating body to rotate.

10. A simulated electric fireplace, comprising a housing, a window is provided on the front side of the housing, and a flame simulation device is provided in the inner cavity of the housing, characterized in that, The flame simulation device is the flame simulation device according to any one of claims 1 to 9.

11. A flame simulation device, characterized in that: Comprising: A light source, a rotatable light-transmitting body, and an imaging plate, the light source including at least one row of LED lamp groups arranged by a number of LED light-emitting chips; the light source emitting a first light beam group, the first light beam group forming a second light beam group after being projected into the light-transmitting body, and the second light beam group being projected onto the imaging plate for imaging; a number of light mixing blocks being provided on the light-transmitting body, the number of light mixing blocks being closely arranged along the circumferential direction of the light-transmitting body to form a light mixing block ring, and being arranged in a number of rings of light mixing block rings along the axial direction of the light-transmitting body; a light shielding plate being provided between two adjacent rings of light mixing blocks; the light mixing blocks being concave lenses; or the light mixing blocks being convex lenses; or, the number of light mixing blocks being a combination of convex lenses and concave lenses.

12. The flame simulation device according to claim 11, characterized in that: The first light beam group forms a second light beam group after being projected into the light-transmitting body and the light mixing blocks.

13. The flame simulation device according to any one of claims 11-12, characterized in that: The light-transmitting body is a cylinder; or the light-transmitting body is a rotating body formed by an arched arc.

14. The flame simulation device according to claim 13, wherein: Including at least two coaxial light-transmitting bodies, the light-transmitting bodies being connected by a connecting part, the axis of the light-transmitting body passing through the connecting part, and the light-transmitting body and the connecting part being rotatable about the axis.

15. The flame simulation device according to claim 13, characterized in that: The light-transmitting body is hollow, and the light mixing block is arranged on the outer wall and / or inner wall of the light-transmitting body; or, the light-transmitting body is solid, and the light mixing block is arranged on the outer wall of the light-transmitting body.

16. The flame simulation device according to any one of claims 14-15, characterized in that: The LED lamp group is arranged along the axial direction of the light-transmitting body and faces the light-transmitting body.

17. The flame simulation device according to claim 16, characterized in that: It further includes a motor, and the motor drives the light-transmitting body to rotate.

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