The present invention is a flame simulating assembly with a flicker element including a rod and a number of paddle elements located on the rod in predetermined locations.
In the typical electric fireplace, images of flames are created by projecting light onto a screen, and the flame images are moved generally upwardly on the screen. In the prior art electric fireplace, however, the light intensity across each of the flame images tends to be substantially uniform. This is thought to be undesirable because it is unrealistic, as real flames tend to have variations in intensity across their respective breadths.
In addition, the typical electric fireplaces tend to provide intermittent flashes of light on the screen thereof that travel in a partially transverse direction, rather than generally upwardly. These transversely travelling flashes are unlike flames in a real wood or coal fire. The transversely travelling light flashes therefore tend to undermine the realistic effect that is sought to be achieved.
There is a need for a flame simulating assembly that overcomes or mitigates one or more of the disadvantages or defects of the prior art. Such disadvantages or defects are not necessarily included in those described above.
In its broad aspect, the invention provides a flame simulating assembly including one or more light sources for producing light, a screen to which the light from the light source is directed, to provide a number of images of flickering flames thereon, and a rotatable flicker element. The flicker element includes an elongate rod defined by an axis thereof about which the rod is rotatable and a number of paddle elements located in respective predetermined locations on the rod. Each paddle element includes one or more body portions having one or more reflective surfaces thereon. The reflective surface includes a central region that is substantially centrally located on the reflective surface and a perimeter region at least partially located around the central region. The perimeter region substantially defines a perimeter plane. The paddle elements are located to position the perimeter plane substantially parallel to the axis, for intermittently reflecting the light from the light source from the reflective surface to predetermined regions on the screen respectively as the flicker element rotates about the axis, to provide the images of flickering flames on the screen.
In another of its aspects, the flicker element positions the paddle elements in respective preselected positions relative to the light source to locate the reflective surface on the respective paddle elements to reflect the light from the light source to the screen intermittently as the flicker element rotates about the axis, to provide the images of flickering flames on the respective predetermined regions on the screen.
In another of its aspects, the invention provides a method of providing images of flames including providing at least one light source for producing light, and providing a rotatable flicker element. The flicker element includes an elongate rod defined by an axis thereof and a number of paddle elements located in respective predetermined locations on the rod, each paddle element including one or more body portions with one or more reflective surfaces thereon. The reflective surface is formed to include a substantially planar region substantially defining a perimeter plane and a non-planar region. The paddle elements are located to position the perimeter plane substantially parallel to the axis. A screen is provided, for displaying a plurality of images of flames thereon. The rod is positioned with the axis thereof substantially parallel to the screen, to locate the reflective surface intermittently in a path of the light from the light source, for reflecting the light from the light source to the screen as the flicker element rotates relative to the screen. The flicker element is rotated about the axis. When the flicker element is rotating, the light from the light source is directed to the reflective surface intermittently, to intermittently provide a first reflected light reflected from the planar region and a second reflected light reflected from the non-planar region to the screen to provide the images of flames. The images include respective portions thereof formed by the first reflected light and the second reflected light, the first reflected light having a different intensity on the screen relative to the second reflected light.
In yet another of its aspects, the invention provides a method of forming a flicker element. The method includes providing an elongate rod defined by an axis thereof and forming one or more detents on the rod. The detent includes one or more substantially planar surfaces. One or more paddle elements having two body portions connected by a bridge portion thereof, are provided. The bridge portion includes an inner connector and a pair of outer connectors located on opposite sides of the inner connector. The paddle element is bent at the bridge portion to define a space between the inner connector and the pair of outer connectors. The rod is inserted into the space to locate the planar surface for engagement with the inner connector. The paddle element is released to permit resilient pivoting movement of the body portions about the bridge portion, to urge the inner connector against the planar region for positioning the paddle element in a preselected position on the rod.
The invention will be better understood with reference to the attached drawings, in which:
In the attached drawings, like reference numerals designate corresponding elements throughout. Reference is first made to
The flicker element 32 preferably positions the paddle elements 38 in respective preselected positions relative to the light source 22 to locate the reflective surfaces 42 on the respective paddle elements 38 to reflect the light from the light source 22 to the screen 24 intermittently as the flicker element 32 rotates about the axis 36, to provide the images 26 of flickering flames on the respective predetermined regions 47 on the screen 24.
As can be seen in
In one embodiment, the flame simulating assembly 20 preferably additionally includes a flame effect element 48 that has one or more apertures 50. It is preferred that the flame effect element 48 is positioned to permit the light reflected from the paddle elements 38 as the flicker element 32 rotates to pass through the aperture(s) 50, to provide the images 26 of flickering flames on a rear side 51 of the screen 24. As can be seen in
Preferably, the paddle elements 38 are located in a number of respective paddle element groups 80. Each paddle element group 80 preferably is located so that the light reflected by the paddle elements 38 in each paddle element group 80 respectively is directed to a selected one of the predetermined regions 47 on the screen 24.
In one embodiment, as can be seen in
Preferably, each of the paddle elements 38 in each of the paddle element groups 80 is positioned to locate the body portions 40 thereof in predetermined radial positions relative to the body portions of the other paddle elements in the paddle element group therefor.
Preferably, the respective body portions 40 of the paddle elements 38 in each of the paddle groups 80 are positioned substantially at 45° radially relative to the respective body portions 40 of the paddle elements 38 adjacent thereto in the paddle element group 80 therefor, for reflection of the light from the light source 22 toward the selected one of the predetermined regions on the screen 24 for the paddle element group thereof when the rod 34 is rotated.
It will be understood that the body portions 40 of the paddle elements 38 in any selected paddle element group 80 may be positioned radially relative to each other in any desired relationship. In one embodiment, illustrated in
Preferably, and as can be seen in
As can be seen in
For example, in one embodiment, the central region 44 on the first side 54 preferably is at least partially convex relative to the perimeter region 46 adjacent thereto, and the central region 44 on the second side 56 preferably is at least partially concave relative to the perimeter region 46 adjacent thereto (
As will be described, the differences between the central region 44 and the perimeter region 46 result in differences in the light that is reflected from these two different regions of the reflective surface 42.
Those skilled in the art would appreciate that the paddle elements 38 may be formed of any suitable materials, and that the central region 44, and the perimeter region 46, may be formed in any suitable way. It is preferred that the paddle elements 38 include, or are made of, material that is highly reflective, i.e., adapted for specular reflection. As will also be described, it is also preferred that the paddle element 38 is made of material that is resilient and flexible. For example, it has been found that the paddle elements 38 may be made of reflective Mylar®, preferably from sheets that are approximately 7 mil (0.007 inch, or approximately 0.1778 mm) thick.
It will be understood that the paddle element 38 preferably is formed by cutting the paddle element 38 out of a sheet of suitable material, e.g., reflective Mylar®. Also, it is preferred that the outer connectors 62, 64 and the inner connector 60 are at least partially defined by cuts 65, 66 that partially separate the respective outer connectors 62, 64 and the inner connector 60 (
Alternatively, the paddle elements 38 and/or the body portions may be formed using any other suitable methods and materials. For example, the paddle elements and/or the body portions thereof may be formed using injection molding.
It will be understood that the body portions 40A, 40B and the bridge portion 58 may have any suitable size, shape or form. In one embodiment, and as can be seen in
It is also preferred that the inner connector 60 is integrally formed with the body portions 40A, 40B. The outer connectors 62, 64 preferably are also integrally formed with the body portions 40A, 40B. In each paddle element 38, the inner connector 60 and the outer connectors 62, 64 preferably are separated only by the respective cuts 65, 66 therebetween, in the bridge portion 58.
As can be seen in
The paddle elements 38 may be positioned on the rod 34, and attached to the rod 34, in any suitable manner. In one embodiment, it is preferred that the rod 34 is inserted into the space 72 between the inner connector 60 and the outer connectors 62, 64 that is formed when the central portion 70 of the inner connector 60 is moved outwardly. That is, the rod 34 is moved in a generally axial direction into the space 72. After the rod 34 is positioned as desired relative to the paddle element 38, the inner connector 60 is released to engage the rod 34, as will be described. The paddle element 38 is secured to the rod 34 due to the tension to which the paddle element 38 is subjected as a result. Specifically, and as will be described, the inner connector 60 is urged against one side of the rod 34, and the outer connectors 62, 64 are simultaneously urged against an opposite side of the rod 34. This mounting arrangement is illustrated in
As noted above, the paddle element 38 preferably is formed out of a substantially flat sheet of material, e.g., the reflective Mylar® referred to above, that is relatively thin. Those skilled in the art would be aware of other suitable materials. Preferably, if the paddle element is formed out of a flat sheet of material, the material out of which the paddle element 38 is formed is resilient and flexible, however, the paddle element may be formed in various ways, out of any suitable material(s).
It will be understood that, when the central connector's central portion 70 is moved outwardly (i.e., in the direction indicated by arrow “A” in
As can be seen in
In one embodiment, each of the paddle elements 38 preferably is positioned at a predetermined location therefor on the rod 34. It is preferred that, when the rod 34 is positioned in the opening 72 so that a selected paddle element 38 is proximal to the predetermined location therefor, the inner connector 60 is released to allow the central portion 70 of the inner connector 60 to engage the rod 34 at the predetermined location for the selected paddle element 38. Preferably, when the inner connector 60 is urged against one side of the rod 34, the outer connectors 62, 64 also are urged against the other (opposite) side of the rod 34, due to the resilience of the paddle element 38.
As noted above, it is preferred that the paddle element 38 is resilient and flexible. Accordingly, in one embodiment, when the rod 34 is partially located in the space 72 and the inner connector 60 is released after it has been pulled outwardly, the inner connector 60 moves inwardly (i.e., in the direction indicated by arrow “B” in
From the foregoing, it can be seen that, once the paddle element 38 is mounted on the rod 34 in the predetermined location therefor, the inner connector 60 is urged against one side of the rod 34, and the outer connectors 62, 64 are urged against the opposite side of the rod 34. In this way, the paddle element 38 is relatively securely held in its predetermined location on the rod 34.
It will be understood that the above-described process of mounting the paddle element 38 on the rod 34, at the predetermined location therefor, may be accomplished using any suitable means. However, those skilled in the art would appreciate that the paddle element 38 preferably is manually mounted onto the rod 34 in the predetermined location therefor, i.e., the paddle element 38 preferably is manipulated to provide the space 72, the rod 34 is axially moved so that the paddle element is proximal to its predetermined location on the rod 34, and then the paddle element is manually released, to engage the rod at the predetermined location therefor.
From the foregoing, it can be seen that when the paddle element 38 is mounted on the rod 34 (
Due to the resilience of the paddle element 38 and because the rod 34 prevents the paddle element 38 from returning to its planar profile, the inner connector 60 and the outer connectors 62, 64 securely engage the rod 34 to hold the paddle element 38 thereof in the predetermined location therefor.
Those skilled in the art would appreciate that the rod 34 may have any suitable form, and may be made of any suitable materials. The rod 34 preferably is made of a suitable metal or alloy, e.g., a suitable steel. Alternatively, the rod 34 may be made of any suitable plastic or composite material(s). In one embodiment, the rod 34 preferably includes one or more main portions 74 thereof.
In one embodiment, the main portions 74 preferably are generally cylindrical and elongate (
It is also preferred that the rod 34 includes any suitable means for positioning the paddle elements 38 in the predetermined locations therefor on the rod 34. In one embodiment, the rod 34 preferably includes a number of detents 76 formed for positioning the paddle elements 38 in the respective predetermined locations therefor. As can be seen in
As noted above, the paddle elements 38 preferably are located in predetermined locations on the rod 34 to reflect the light from the light source(s) 22 to the screen 24, to provide the images of flickering flames 26 thereon. As is also noted above, the paddle elements 38 preferably are located on the rod 34 by respective detents 76, which preferably are formed in the detent groups 78.
It will be understood that the respective detent groups 78 may include any suitable number of detents 76, i.e., the paddle element groups 80 may include any suitable number of paddle elements 38. In one embodiment, each paddle element group 80 preferably includes four paddle elements 38. It is also preferred that the bridge portion 58 of each paddle element 38 in the paddle element group 80 respectively engages a selected one of the detents 76 in the detent group 78 therefor, to position each paddle element 38 in a predetermined radial position on the rod 34 relative to the other paddle elements 38 in the paddle element group 80 therefor.
Accordingly, and as noted above, the detent groups 78 preferably are respectively positioned along the rod 34 to substantially align the paddle element groups 80 respectively mounted thereon with respective selected ones of the apertures 50 in the flame effect element 48. For each respective paddle element group 80, the light from the light source 22 therefor is intermittently reflected from the body portions of the paddle elements thereof through the respective aperture therefor to the predetermined region on the screen for the paddle element group 80, where the light provides the images of flames.
It is also preferred that the flame simulating assembly 20 includes a number of light sources 22, and each of the individual light sources is respectively positioned to substantially direct the light therefrom to a selected one of the paddle element groups 80. Those skilled in the art would appreciate that any suitable light source(s) may be used. For instance, the flame simulating assembly 20 may include a number of light-emitting diodes (“LEDs”), and each of the LEDs preferably are located to direct the light therefrom toward respective paddle element groups 80, from which the light is reflected to the respective apertures 50. Accordingly, it is preferred that the individual LEDs are located generally proximal to respective apertures 50 in the flame effect element 48. As is known, the light generated by LEDs is relatively focused. As a result, the light generated by each of the LED light sources 22 preferably is relatively narrowly focused. Preferably, each of the light sources 22 is respectively positioned so that the light generated thereby is directed substantially toward the paddle element group 80 positioned to reflect the light toward the aperture 50 selected therefor. It will be understood that more than one light source 22 may be positioned to direct light therefrom to the paddle element group 80 to the selected aperture 50 therefor.
For example, in one embodiment, relatively high-powered LEDs may be used. An example of a suitable high-powered LED is a one-watt LED. It has been found that a single high-powered LED may be used for each respective paddle element group 80.
Alternatively, LEDs that are not high-powered may be used. Those skilled in the art would appreciate that a number of such LEDs may be positioned for use with each paddle element group respectively.
Those skilled in the art would also appreciate that the light produced from the light source(s), and reflected from the reflective surfaces, is the sum of the light in each case.
As can be seen in
From the foregoing, it can be seen that the locations of the detent groups 78 on the rod 34, and the positioning of such locations relative to the flame effect element 48 when the flicker element 32 is installed in a preselected position therefor relative to the flame effect element 48, are predetermined. As noted above, the detent groups 78 are spaced apart on the rod 34 so that, when the paddle elements 38 are mounted on the rod 34 to form the respective paddle element groups 80 and the flicker element 32 is positioned in the preselected position therefor relative to the flame effect element 48, the paddle element groups 80 preferably are substantially aligned respectively with the apertures 50 in the flame effect element 48. In one embodiment, for instance, each detent group 78 preferably is spaced apart from the detent group(s) adjacent thereto by a preselected distance “D” (
In
As noted above, in one embodiment, each of the paddle elements 38 preferably is positioned at approximately 45° radially relative to the paddle elements 38 immediately adjacent thereto in the paddle element group 80 thereof respectively. Because of the radial positioning of the paddle elements 38 in each of the paddle element groups 80 relative to the other paddle elements 28 thereof, the light from the light source(s) 22 is reflected thereby through the aperture 48 therefor toward the screen 24 at preselected intervals when the rod 34 is rotated. When the flicker element 32 is rotated, this radial arrangement of the paddle elements in each of the paddle groups 80 provides flame images at intervals so that the flame images 26 simulate a flickering flame.
As noted above, when the flame simulating assembly 20 is energized, each of the paddle elements 38 is moving, i.e., rotated about the axis 36 as the light from the light source(s) 22 is reflected from the reflective surfaces 42 of the respective paddle elements. Because each reflective surface 42 includes non-planar and planar surfaces, the light reflected therefrom towards the aperture 50 also flickers, i.e., the direction and intensity of the reflected light vary as long as the paddle element moves while the light is reflected therefrom.
The rod 34 may be rotated at any suitable rate, for example, between 10 rpm and 25 rpm.
Those skilled in the art would appreciate that the detents 76 may be formed in any suitable manner. Preferably, each of the detents 76 includes one or more first regions 82 and one or more second regions 83 for engagement with the inner connector 60 and the outer connectors 62, 64 respectively.
In one embodiment, and as can be seen in
As can be seen in
In one embodiment, each of the substantially planar regions 82 of the respective detents 76A-76D preferably is positioned at approximately 45° relative to the detents that are positioned adjacent thereto. For example, as shown in
As can be seen in
Preferably, the light passing through the aperture 50 to the screen 24 is shaped by the aperture 50. As can be seen in
For instance, the light from the light source(s) 22 that is directed to the flicker element 32 is schematically represented by arrow “M” in
For convenience, the paddle elements illustrated in
As can be seen in
It will be understood that the extent of the convexity and concavity of the central regions 44 is somewhat exaggerated in
In use, as described below, the light forming the images 26 generally appears to vary in intensity within the images 26. This variation in intensity enhances the realistic effect provided by the assembly 20, as such variation is similar to variations in light intensity observable in flames in a real wood or coal fire, or a fire consuming other combustible materials. It is believed that the variation in light intensity within the image 26 is due, at least in part, to the cupped shapes of the body portions 40A, 40B. Part of the light reflected from a body portion 40 is reflected from the (substantially planar) perimeter regions 46, and another part of the light reflected from such body portion 40 is reflected from the convex or concave region “J” or “K”, as the case may be. It will be understood that, as the flicker element 32 is rotated, the intensity of the light reflected by each body portion 40 and directed to the screen 24 to form the image of flames varies. This is thought to be because the light from the light source is directed to the moving (i.e., rotating) body portion, causing the light to be reflected, at least in part, sequentially from the substantially planar region and the non-planar central region.
As can be seen in
In
In
In
It will also be understood that, as described above, the flicker element preferably includes a number of paddle elements positioned proximal to each other, in the paddle element group. The other paddle elements on the rod are omitted from
As noted above, the paddle elements 38 preferably are mounted on the rod 34 to form the paddle element groups 80, which are associated with the respective apertures 50. It is believed that the radial positioning of the paddle elements 38 in each group 80, to an extent, also causes the realistic variation in light intensity in the image 26 due to the different reflective surfaces of the body portions 40A, 40B being used to reflect the light from the light source(s) 22 in turn as the flicker element 32 is rotated about the rod's axis 36.
For example, in
In
From
Another benefit that is believed to result from the arrangement of the elements of the assembly 20 is the virtual elimination of incidental partially transverse flashes of light on the screen 24. This benefit is believed to be due to the generally consistent positioning of the paddle elements 38 relative to the screen 24, i.e., because the paddle elements 38 are positioned by the respective detents 76 in the respective predetermined positions therefor. As described above, and as illustrated in
As can be seen, for instance, in
Those skilled in the art would also appreciate that the elements 94 may be made of any suitable material(s). The simulated fuel elements 94 preferably are at least partially light-transmitting. Preferably, the simulated fuel elements 94 are at least partially translucent, and/or at least partially transparent. In one embodiment, it is preferred that the elements 94 are, for example, pieces of cut glass. Alternatively, the fuel elements 94 may be made of acrylic. The fuel elements 94 preferably are formed into any suitable shape(s). In one embodiment, the fuel elements 94 preferably are formed to be multi-faceted. The fuel elements 94 preferably are located by a support element 96 that positions at least some of the fuel elements 94 adjacent to the screen 24.
In an alternative embodiment, a flame simulating assembly 120 of the invention preferably includes a screen 124 and a simulated fuel bed 192 located in front of a screen 124 thereof (
As can also be seen in
The invention also includes a method of providing images of flames that includes the following. The light sources 22 for producing light, the screen 24, and the rotatable flicker element 32 including the rod 34 defined by the axis 36 thereof and a number of the paddle elements 38 mounted in respective preselected positions on the rod, are provided, as described above. As noted above, in one embodiment, each paddle element 38 includes one or more body portions with one or more reflective surfaces 42 thereon, and the reflective surfaces preferably are formed to include the substantially planar region 46 substantially defining the perimeter plane “PR” and the non-planar region 44. The paddle elements are located to position the perimeter planes “PR” thereof substantially parallel to the axis 36. The screen 24 is provided for displaying a number of images of flames 26 thereon. The rod is located so that the axis thereof is substantially parallel to the screen, to locate the reflective surfaces intermittently in the path of the light from the light source 22, for reflecting the light from the light source to the screen as the flicker element rotates relative to the screen. The flicker element is rotated about the axis. When the flicker element is rotating, the light from the light source is directed to the reflective surface intermittently, to intermittently provide a first reflected light reflected from the planar region and a second reflected light reflected from the non-planar region to the screen to provide the images of flames. The images 26 include respective portions thereof formed by the first reflected light and the second reflected light respectively, the first reflected light having a different intensity on the screen relative to the second reflected light. It will be understood that, in the foregoing description, the references to “first reflected light” and “second reflected light” are intended only to distinguish the light reflected from the planar region from the light that is reflected from the non-planar region. Those skilled in the art would appreciate that the light may be reflected simultaneously, or virtually simultaneously, from these regions.
The fluctuations in the reflected light are, in part, the result of the differences in the regions of the reflective surfaces 42, as illustrated schematically in
It is also preferred that the invention provides a method of forming the flicker element. The elongate rod is provided, with the detents formed on the rod. Each detent includes one or more of the substantially planar surfaces. The paddle elements are provided, and each paddle element is bent at the bridge portion thereof to define the space 72 between the inner connector and the pair of outer connectors thereof. The rod is inserted into the space 72 to locate the planar surface of the detent 76 for engagement with the inner connector. The inner connector is released to permit resilient pivoting movement of the body portions about the bridge portion, to urge the inner connector against the planar region for positioning the paddle element in the preselected position therefor on the rod.
Those skilled in the art would appreciate that, although the embodiments of methods of the invention as described above indicate that steps of the methods are to be performed in a sequence, certain of the steps may alternatively be performed in alternative sequences. For instance, in the method of providing images of flames, the elements of the flame simulating assembly generally may be provided in any suitable order.
It will be appreciated by those skilled in the art that the invention can take many forms, and that such forms are within the scope of the invention as claimed. The scope of the claims should not be limited by the preferred embodiments set forth in the examples, but should be given the broadest interpretation consistent with the description as a whole.
This application claims the benefit of U.S. Provisional Patent Application No. 62/129,188, filed on Mar. 6, 2015, the entirety of which is hereby incorporated by reference.
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