ARTIFICIAL FIREPLACE

Abstract

The artificial fireplace includes an enclosure delimited by a lower wall, an upper wall and a peripheral wall. The peripheral wall includes an opening, a bed of fake embers being disposed inside the enclosure on a base defined by the lower wall. The enclosure is also provided with a projector for an image, in particular animated flames, towards a display screen disposed in the enclosure in a line of sight extending through the opening. The display screen is defined by a transparent glass plate extending between the bed of fake embers and the projector, while forming, in relation to the incident ray emanating from the projector, an angle ranging between 50° and 56°. The projector is defined for broadcasting images, in particular animated flames, through a linear polarized light. The invention also relates to a fireplace unit or stove comprising an artificial fireplace.

Claims

1. An artificial fireplace, comprising: an enclosure delimited by a lower wall, an upper wall, and a peripheral wall being comprised of an opening, a bed of fake embers being arranged inside the enclosure on a base defined by the lower wall, a display screen arranged in the enclosure, a line of sight extending from the display screen as far as the outside of the fireplace, through said opening, and projection means arranged in the enclosure, the projection means being designed to transmit an image, in particular of animated flames, towards the display screen, wherein the projection means transmit, according to an incident ray, images through a linear polarized light, the display screen being defined by a transparent glass plate extending between the bed of fake embers and the projection means, the transparent plate forming, in relation to the incident ray, an angle of between 50° and 56°.

2. The artificial fireplace, according to claim 1, wherein the projection means (10) are installed under the upper wall (4) of the enclosure (2).

3. The artificial fireplace, according to claim 1, wherein the display screen is arranged both in the enclosure, between the projection means and the bed of fake embers, and in the extension of the opening extending according to a specified angle with respect to the base of the enclosure.

4. The artificial fireplace, according to claim 1, wherein the transparent glass plate comprises, in the region of the rear face thereof and visible through the opening of the enclosure, an anti-reflective treatment.

5. The artificial fireplace, according to claim 1, wherein the transparent glass plate is held in the enclosure by a support structure being comprised of a bracket that rests on said base (8), defining a screen at the rear of the bed of fake embers.

6. The artificial fireplace, according to claim 1, wherein the transparent glass plate is adjusted to the walls of the enclosure.

7. The artificial fireplace, according to claim 1, further comprising: sound diffusion and/or odor emissions means.

8. The artificial fireplace, according to claim 1, further comprising: lighting means designed to diffuse an ambient light in the enclosure.

9. The artificial fireplace, according to claim 1, wherein the bed of embers is comprised of various elements which imitate a combination of wood being burned, embers, and cinders, wherein materials that are selected so as to allow light radiation, said light radiation being produced by the lighting means installed under said bed of embers, in the form of LEDs suitable of undergoing a variation in light intensity in order to simulate the animation of real incandescent embers, to show through, in part.

10. The artificial fireplace, according to claim 1, further comprising: means for controlling and managing the operation: Of the projection means; And/or of the ambient lighting means; And/or of the sound diffusion and/or odor emissions means; And/or of the lighting means under the bed of embers; And/or of heating means, in particular electrical, with which said fireplace is equipped.

11. The artificial fireplace, according to claim 1, being mounted so as to be rotatable about a vertical axis through suspension means, such as a fake flue or a support base.

12. A unit as a fireplace or stove, comprising: an artificial fireplace according claim 1, said artificial fireplace having a fake flue which integrates heating means.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

[0049] Other aims and advantages of the present invention will emerge from the following description, relating to an embodiment given by way of non-limiting example.

[0050] This description will be better understood with reference to the accompanying drawings.

[0051] FIG. 1 is a schematic cross-sectional view of a fireplace according to the invention.

[0052] FIG. 2 is a schematic cross-sectional view of a fireplace unit comprising a fireplace according to the invention.

[0053] FIG. 3 schematically shows the reflection principle used for displaying a virtual image on a display screen.

DETAILED DESCRIPTION OF THE INVENTION

[0054] As visible in the accompanying drawings, the present invention relates to an artificial fireplace 1, for a fireplace unit, insert or stove, comprising an enclosure 2 delimited by a lower wall 3, an upper wall 4, and a peripheral wall 5.

[0055] Of course, said fireplace 1 may assume various embodiments. In particular, the lower 3 and upper wall 4, just like the peripheral wall 5, can be more or less concave, so as to provide said fireplace 1 with a substantially spherical shape. As can be seen in FIG. 2, for example, the various walls 3, 4, 5 are a continuation of one another. In this embodiment, the lower wall 3 and the peripheral wall 5 provide the fireplace with an oblate shape, extended and topped by a cone formed by the upper wall 4.

[0056] In this context, the lower wall 3 of the fireplace 1 will be considered to be the wall closing said fireplace in the lower region thereof. Simultaneously, the upper wall 4 covers the enclosure 2 of the fireplace 1. Finally, the peripheral wall 5 corresponds to the casing which laterally surrounds said enclosure 2.

[0057] In this connection, said peripheral wall 5 comprises an opening 6 which offers a line of sight 7 of the inside of the enclosure 2 of the fireplace 1. In the embodiment of FIG. 2, the opening 6 corresponds to a mouth which is ovoid in shape and fits to the curvature of the peripheral wall 5. The central part 60 of the opening 6 extends in the region of a plane P or in front of said plane P. More precisely, the upper central part 60 extends in the region of the plane P. As far as the lower central part 60 is concerned, it extends, in this embodiment, in front of the plane P. This is shown in FIG. 2, the plane P being tangential to the curvature of the peripheral wall 5. In contrast, the lateral edges 61 of the opening 6 extend so as to be set back from the plane P. This specific design of the opening 6 contributes to reducing the parasitic reflections which originate from the outside of the enclosure 2.

[0058] More particularly, in said enclosure 2, the lower wall 3 of the fireplace 1 defines the base 8 of the enclosure. The artificial fireplace 1 comprises a bed of fake embers 9 on the base 8 of the enclosure. Moreover, the bed of fake embers 9 is arranged in the line of sight 7.

[0059] Furthermore, projection means 10 are arranged inside said enclosure 2. The projection means 10 are preferably designed to transmit a linear polarized light. By way of example, it is possible to use, for this purpose, a video screen of the LCD type. In all cases, according to the invention the projection means 10 are designed to transmit an image of animated flames towards a display screen 11.

[0060] As shown in FIGS. 1 and 2, the artificial fireplace 1 comprises a display screen 11 which is arranged in the enclosure 2. The display screen 11 is preferably arranged in the line of sight 7 of an observer 12 located in front of the opening 6 of the artificial fireplace 1.

[0061] Advantageously, said projection means 10 are installed under the upper wall 4 of the enclosure 2. The projection means 10 are furthermore defined so as to broadcast images, in particular of animated flames, through a linear polarized light. The design and the cooperation of the display screen 11 and the projection means 10 allow for the formation of a virtual image in the line of sight 7. In particular, said virtual image is formed, in the line of sight 7, at the rear of the display screen 11, in the region where the bed of fake embers 9 is arranged.

[0062] As regards the display screen 11, this is arranged in the enclosure 2, between the projection means 10 and the bed of fake embers 9, and in the extension of the opening 6.

[0063] According to the invention, the display screen 11 is defined by viewing optics. In practice, the viewing optics is formed by a transparent plate 13. Said transparent plate 13 is preferably made of glass. Typically, the transparent plate 13 can be considered to be a diopter.

[0064] As shown in FIG. 5, the transparent plate 13 is designed such that the projection means 10 emit a linear polarized light according to Brewster's angle. A Fresnel reflection according to Brewster's angle is thus produced. For this purpose, the transparent plate 13 is arranged according to an angle iB of between 50° and 56° with respect to the incident ray emitted by the projection means 10. Said angular measurement corresponds to what is known as Brewster's angle.

[0065] Advantageously, the projection of a linear polarized light onto the transparent plate 13, according to Brewster's angle, contributes to causing the partial reflection, typically produced when a light beam is transmitted on a diopter, to disappear. This is due to the fact that the refracted ray rB is perpendicular to the reflected ray 14a. However, according to this direction of refraction, the refracted light beam does not appear in the line of sight 7 of an observer, and is therefore not visible to said observer (shown in FIG. 3). The clarity of the virtual image formed on the transparent plate 13 is thus optimized, thus increasing the impression of realism of the virtual image for an observer located in the line of sight 7.

[0066] The advantages of this design consist in that the transparent plate 13 reflects an image, towards the line of sight 7, which is made up of a single polarized component which is formed by the reflected ray 14a. The clarity of the virtual image formed in the line of sight 7 is furthermore optimized by the reduction of the reflections originating from the external environment.

[0067] For this purpose, the transparent plate 13 comprises, in the region of the rear face 15 thereof and visible through the opening 6 of the enclosure 2, an anti-reflective treatment, so as to prevent any light, emanating from a source other than that corresponding to the projection means 10, from interfering with the holographic image thus produced.

[0068] Moreover, the three-dimensional geometric shape of the fireplace 2 and of the opening 6 shown in FIG. 2 also contributes to reducing the reflections of parasitic light originating from outside the fireplace 2.

[0069] The observer 12 in front of the opening 6, not perceiving the transparent plate 13, gains the illusion that flames are burning below the bed of fake embers 9.

[0070] To this end, the transparent glass plate 13 is designed to be adjusted to the walls 3, 4, 5 of the enclosure 2. For this purpose, the transparent plate 13 is dimensioned depending on the dimensions of the enclosure 2, and in particular a cross section of the enclosure 2. Moreover, the transparent plate 13 is advantageously of a shape similar to the geometric shape of a cross section of the enclosure 2. In the embodiment of FIG. 2, the cross section is in the geometric shape of an ovoid.

[0071] The fact that the transparent plate 13 is adjusted to the walls 3, 4, 5 of the enclosure 2 contributes to concealing the presence of the transparent plate 15 from the view of a user located in the line of sight 7.

[0072] The transparent plate 13 can be held in the enclosure 2, under the conditions cited above, by means of a support structure 16 which can be of various embodiments.

[0073] Thus, said support structure 16 may be in the form of a simple support rim (not shown) in the region of the peripheral wall 5, inside the enclosure 2, so as to achieve support on the upper rim 17 of the transparent plate 13, the lower rim 18 of which rests, for example, on the base 8.

[0074] As can be seen in FIG. 2, said support structure 16 may furthermore take the form of a bracket 19 which rests on said base 8, at the rear of the bed of fake embers 9. The upper rim 17 of the transparent plate 13 rests on said bracket, under the inclination conditions mentioned above. Furthermore, said bracket 19 may define a screen 20 behind the bed of fake embers 9.

[0075] Lighting means 21 capable of diffusing ambient light in the fireplace 1 can also be installed in the enclosure 2. Said lighting means 21 may for example be located at the rear of the screen 20 formed by the bracket 19, between said screen and the peripheral wall 5 of the enclosure 2.

[0076] The fireplace according to the invention may also be equipped with sound diffusion and/or odor emissions means 22. By way of example, these may be installed in the enclosure 2, under the upper wall 4, preferably outside of the field of view provided by the opening 6. Such sound diffusion and/or odor emissions means 22 can, for example, emit sounds which imitate the crackling of a wood fire and/or an odor of wood.

[0077] As mentioned above, a fireplace according to the invention may equip a fireplace unit or indeed a stove. It is well established that the fireplace of a fireplace unit or of a stove is traditionally connected to a flue.

[0078] In addition, a fireplace unit 23, as visible in FIG. 2, or a stove comprising a fireplace 1 according to the invention may be equipped with a fake flue 24, inside which heating means 25 may be located. Said heating means are preferably of the dry inertia electric type.

[0079] Advantageously again, said fake flue 24 may substantially constitute suspension means of the fireplace 1.

[0080] According to another particularity of the invention, the fireplace 1 is mounted so as to be rotatable about a vertical axis through, depending on the case, these suspension means preferably defined by a fake flue 24, or a support base on which the fireplace 1 rests (solution not shown).

[0081] As regards the bed of embers 9, it may be made up of different elements imitating a combination of wood being burned, embers, and ashes. Advantageously, the materials are selected so as to allow light radiation, produced by the lighting means 26 which are preferably installed under said bed of embers 9, to show through, in part. Said lighting means 26, advantageously in the form of LEDs, may be subjected to a variation of light intensity in order to simulate the animation of real incandescent embers.

[0082] According to another particularity of the invention, the fireplace 1 comprises means 27 for controlling and managing the operation: [0083] Of the projection means 10; [0084] And/or of the ambient lighting means 21; [0085] And/or of the sound diffusion and/or odor emissions means 22; [0086] And/or of the lighting means 26 under the bed of embers 9; [0087] And/or of the heating means 25.

[0088] Remote control means 28, operating by radio frequency, Wi-Fi, Bluetooth, or the like, which are capable of offering the user a plurality of selections of the mode of operation of the fireplace 1, may be associated with control and management means 27 of this kind.

[0089] Thus, using such control and management means 27 and/or remote control means 28, a user can, for example, select a video sequence from a plurality of such sequences which can be projected by the projection means 10, and/or select different modes of ambient lighting, and/or select a particular sound diffusion band and/or a particular odor emission from a proposed range.

[0090] The lighting means 26 under the bed of embers 9 can, in turn, adopt different light variation cycles of the LEDs of which they are made up, which cycles can be selected by such remote control means 28 and/or directly by the control and management means 27.

[0091] Of course, these same means 27, 28 are capable of offering the user the possibility of intervening in the mode of operation of the heating means 25.

[0092] Finally, the combination of means which the fireplace 1 according to the invention comprises offers the user the possibility of artificially reproducing a wood fire in different combustion states, for example that of an animated high-heat fire having strong flames, in order to create a welcoming and warm atmosphere, or indeed that of a smoldering fire in order to create an impression of peace and well-being.

[0093] However, this artificial reproduction of a wood fire is achieved with a greater impression of realism which results from the use of a completely transparent screen which is virtually invisible to an observer located in front of the fireplace.