WO2010150069A1

WO2010150069A1 - Illumination system for item of jewellery having movable light sources

Info

Publication number: WO2010150069A1
Application number: PCT/IB2010/001494
Authority: WO
Inventors: Cyril Pilet
Original assignee: Cyril Pilet
Priority date: 2009-06-24
Filing date: 2010-06-21
Publication date: 2010-12-29

Abstract

Illumination system for a display case (2) intended to hold an item (3) likely to sparkle, such as an item of jewellery, a horological item, a craft piece or any other similar item, the illumination system comprising a plurality of movable light sources (6c, 6f) for illuminating an item (3) arranged on the display case (2). These light sources are arranged so as to be able to be moved linearly and rotationally by means of a drive device. To this end, the movable light sources (6c, 6f) are located along at least one bar (15a, 15b, 15c), the bar or bars (15a, 15b, 15c) each being connected to at least one rotary member (16) arranged so as to be rotated by the drive device.

Description

LIGHTING SYSTEM FOR JEWELERY ARTICLE WITH SOURCES

MOBILE LIGHTS

The present invention relates to the field of jewelery, and more particularly relates to lighting for jewelery article, timepiece, craft piece at least partially set with precious and / or semi-precious stones, imitations or any other article likely to twinkle, all these items being referred to hereinafter as "precious stones".

The gemstone lighting systems are generally intended for luxury showcases to highlight the items for sale. There are various lights with a device to highlight a jewel, a watch or a craft by optimizing their sources of lighting.

WO2006093473 discloses a gemstone lighting system with a multitude of fixed and moving light emitting diodes. In one embodiment, these diodes are arranged next to one another at regular intervals along a line and are individually electrically controlled. The intensity of the illumination of each diode can thus vary independently of that of the others so as to be able to reproduce the illusion of a rectilinear movement of a light source when the voltage and current supplying the diodes is modulated appropriately. . The illusion of displacement of this light source makes it possible artificially to create scintillation on static precious stones. Nevertheless, because of the type of light sources used by this system, the visual effect obtained by the reflection and dispersion of light on the facets of the stone reproduces only partially the natural visual effect obtained by reflection and dispersion. a source of natural light on the facets of the stone.

US20080232104 discloses another gemstone lighting system which has a plurality of individually controllable light sources for artificially creating a scintillation effect. This system also makes it possible to adjust the position of each light source in order to optimize the angle of incidence of the light on the object intended to be illuminated. An additional lighting system for jewelery articles is disclosed in WO2008 / 093304. The light sources of this lighting system are arranged to be moved in a rectilinear manner. The drive mechanism of this system comprises a relatively large number of components increasing the cost of the lighting system.

The object of the present invention is therefore to propose a low-cost system capable of reproducing, by an artificial light source, not only a visual effect of scintillation of static gems, but also a visual effect, obtained by the reflection and dispersion of the light from precious stones, comparable to the visual effect obtained by the incidence of a natural light source on the different facets of the stone.

According to the invention, this object is achieved by means of a lighting system of a display intended to receive a scintillating article such as a jewelery article, a timepiece, a craft piece or any other article. similar, the lighting system comprising several movable light sources to illuminate an article arranged on the display. The latter are arranged so that they can be animated by a linear and rotary movement by means of a driving device. For this purpose, the mobile light sources are arranged along at least one bar, the bar or bars being each connected to at least one rotary member arranged to be rotated by the drive device.

The characteristics of the invention will appear more clearly on reading a description of three embodiments given solely by way of examples, in no way limiting with reference to the schematic figures, in which:

- Figure 1 shows a perspective view of a lighting system for display and the display according to a first embodiment;

- Figure 2 shows a detailed front view of a drive device of a rotating disk having a plurality of light sources;

- Figure 3 shows a view of the disc side of the light sources; - Figure 4 shows a top view of Figure 2;

- Figure 5 shows a perspective view of a lighting system for display and the display according to a second embodiment;

- Figure 6 shows a front view of a portion of the light sources and its drive device;

- Figure 7 shows a top view of Figure 6;

- Figure 8 shows a perspective view of a lighting system mounted in a support according to a variant of the second embodiment;

- Figure 9 shows a side view of Figure 8 inside the support;

- Figure 10 shows a perspective view of a display lighting system and the display according to a third embodiment;

Figure 11 is a front view of Figure 10;

- Figure 12 is a partial top view of Figure 10 without the display;

13 represents a perspective view of a display lighting system and the display according to a variant of the third embodiment;

Fig. 14 is a front view of Fig. 13;

- Figure 15 shows a partial top view of Figure 13 without the display.

According to the first embodiment of the invention illustrated in particular in Figure 1, the lighting system comprises an enclosure 1 inside which is arranged a display 2 for receiving any jewelery item 3 with stones precious, semi-precious, imitation or any other glittering material hereinafter referred to as "precious stones". The upper part of the enclosure 1 comprises a support 4 below which is rotatably arranged a disc 5 whose surface oriented on the side of the display 2 comprises a plurality of light-emitting diodes (LEDs) 6c, 6f disposed on all said surface (Figure 3). These LEDs 6c, 6f are divided into two categories, namely cold white LEDs 6f which emit a cold white color between 6000 and 7000 Kelvin and warm white LEDs 6c which emit a warm color that tends towards yellow between 3000 and 4000 Kelvin . It has been found that the use of these two types of LED 6c, 6f and their positions relative to each other on the disk 5 make it possible to improve the scintillation phenomenon and to recreate a natural light of approximately 4500 Kelvin.

The display system also comprises a plurality of static LEDs 7c, 7f, 8b, 8r, and 8v arranged on two rectilinear structures 9, 9 'whose cross section is rectangular and constant along their longitudinal axis. The material and the shape used for these structures 9, 9 'has been chosen for its high coefficient of thermal conductivity in order to effectively dissipate the heat produced by the LEDs. These two structures 9, 9 'are arranged on either side of the display 2 in the direction of the height, each structure 9, 9' being arranged against one and the other of the two lateral sides of the enclosure 1 .

According to Figure 1, of the invention, seven LEDs are mounted along each structure 9, 9 '. Two of the seven LEDs 7c are hot white type and are arranged close to each end of the structure 9, 9 '. Two more of the seven LEDs, 7f are cold white type, each of which is arranged next to one of the LEDs 7c at a predetermined interval. These LEDs 7c, 7f are also intended to eliminate shadow areas inside the enclosure 1.

The three remaining LEDs 8b, 8r, and 8v are arranged in a middle part at a height close to the height where the exposed article 3 is located and are each capable of emitting a different primary color, namely blue, red and the green.

According to Figure 2, the disc 5 is arranged to be rotated through a belt 10 in engagement with a motor 11 and a pulley 12 mounted integrally on a shaft 13 which is integral with the disc 5 and an electric transmitter 14.

The angular movement of the disk 5 makes it possible to vary the angle of incidence of the moving light sources 6c, 6f on the exposed article in order to artificially create a scintillation effect.

The three light sources 8b, 8r, 8v of the lighting system are arranged to each emit a different primary color in order to obtain, by reflection and dispersion of the light coming from the exposed article 3, a color palette comparable to that obtained by the reflection and dispersion of the natural rays of the sun.

According to the second embodiment of the present invention illustrated in particular in Figure 5, the static light sources are identical to the first embodiment and are therefore composed of several LEDs 7c, 7f, 8b, 8r, and 8v while the Mobile LEDs 6c, 6f are mounted on three straight bars 15a, 15b and 15c arranged substantially parallel to one another in a horizontal plane. Each bar comprises, on the side facing the display 2, six cold white type 6f and warm white 6c LEDs which are mounted alternately at regular intervals along the longitudinal axis of said bar.

The lighting system comprises a first series of six pulleys 16 arranged in a first horizontal plane and a second series of six pulleys 16 'arranged in a second horizontal plane, the second plane being above the first plane. Each of the six pulleys 16 'of the second plane is kinematically connected to one of the pulleys 16 arranged in the first plane by a first rod 16b fixed perpendicular to the surface of the two pulleys 16, 16'.

Each end of each bar 15a, 15b and 15c is mounted on one of the six pulleys 16 arranged in the first horizontal plane by means of a second rod 16c fixed perpendicularly to the surface of said pulley 16. Three of the six pulleys 16 'arranged in the second horizontal plane are kinematically connected to each other by a belt 16a, while the other three of the six pulleys 16 'are kinematically connected to each other by a belt 16a ¹ . A second belt 17 ensures the transmission of the torque supplied by a motor 18 to one of the pulleys 16 ', which rotates the two other pulleys kinematically connected by the belt 16a. Each of the bars 15a, 15b and 15c is thus driven by a substantially rectilinear and ovoidal movement back and forth.

In a variant as represented by FIGS. 8 and 9, the lighting system comprises only one bar 15bis comprising the LEDs 6bis and a first and a second pulley 16d, 16e which are respectively connected to one another. and the other end of the bar. One of the two pulleys 16d, 16e is driven by a motor 18, the rotation of this pulley driving the other pulley by means of a belt 17a so that the bar 15a is driven by a movement back and forth substantially rectilinear and ovoidal. For this purpose, each end of the bar 15bis or a segment of the bar 15bis near each of its ends is secured to one and the other of the pulleys by means for example of a rod (not shown) which is arranged perpendicularly to the surface of the pulley and offset with respect to its axis of rotation. Any other means for securing the bar to the pulleys can be used, the important thing being that the bar is off-axis with respect to the axis of rotation of the pulleys in order to obtain this substantially rectilinear and ovoidal back-and-forth motion. The bar 15bis, the two pulleys 16d, 16e, the belt 17a and the motor 18 are arranged inside an elongated support 20 adapted to be laid on the surface of the display intended to receive a scintillating article, or mounted perpendicularly to the display surface so that the straight motion of the bar is substantially perpendicular or parallel to the exposed article.

In another variant not shown, a single pulley is connected to one of the two ends of the bar so that it is driven by a movement similar to that of a rod.

According to a third embodiment, illustrated by Figures 10 to 12, the display system comprises at its upper part a cubic speaker Y transparent material mounted on a base 19 on which a display 2 '. A lighting system is arranged below this base 19, said system comprising in particular a rotary annular support 20 'on which are arranged sixteen light sources, namely seven warm white LEDs 6c', six cold white LEDs 6f and three LEDs 8b ', 8r', and 8v 'each emitting a color different primary. A through annular opening 21 is made in the base 19 around the display 2 'in correspondence with the annular support 20. The lighting system further comprises a motor 11' and an electric transmitter 14 'mounted below the support 20' so to be able to transmit a rotary motion.

A mirror 21 is fixed above the display 2 'against the upper face of the enclosure 1 in order to be able to reflect the light coming from the moving light sources towards the exposed article 3' on the display 2 'thus creating an effect of scintillation. In this embodiment, it is not necessary to install fixed light sources since the mirror 21 makes it possible to illuminate all the recesses situated inside the enclosure thus eliminating the effects of shadows.

According to an alternative embodiment as illustrated in Figures 13 to 15, the rotary annular support 20 'is replaced by a support consisting of four straight bars 22, 23, 24, 25 arranged in correspondence with four rectangular openings located in each side of the display 2 '. The movement imparted to the bars 22 ', 23', 24 ', 25' is comparable to that imparted to the bars of the second embodiment of the invention. The technical means used to move its bars are therefore similar to those described in this second embodiment.

It goes without saying that the invention is not limited to the embodiments described above as examples. For example, the detachable light sources can be arranged in a vertical or horizontal position to move up and down, and / or alternately from left to right, and / or circular or elliptical, at constant or variable speeds and at intensities constant or variable. Furthermore, although the light sources used in the present invention are LEDs, each of them can be replaced by another light source, such as a conventional incandescent bulb or allogeneic incandescent or optical fibers.

Claims

1. A lighting system of a display (2) for receiving a scintillating article (3) such as a jewelery article, a timepiece, a craft piece or any other similar article, the display system illumination comprising a plurality of movable light sources (6c, 6f, 6a) for illuminating an article (3) arranged on the display (2), said movable light sources (6c, 6f; 6a) being arranged to be able to be animated by a linear and rotary movement by means of a driving device, characterized in that the movable light sources (6c, 6f; 6a) are arranged along at least one bar (15a, 15b, 15c; 15a), the bar or bars (15a, 15b, 15c, 15a) being each connected to at least one rotatable member (16; 16d, 16e) arranged to be rotated by the driving device.

2. lighting system of a display unit according to claim 1, characterized in that the drive device comprises a rotary member which is connected to only one end of the bar or bars so that the bar or bars are animated by a movement resembling that of a connecting rod.

3. Illuminating system of a display unit according to claim 1, characterized in that the drive device comprises two rotary members (16; 16d, 16e) per bar (15a, 15b, 15c; 15a), one and the other one of the rotational members (16; 16d, 16e) being respectively connected to both ends of each bar (15a, 15b, 15c; 15a) so that the bar (s) (15a, 15b, 15c, 15a) are driven by a substantially ovoidal or elliptical movement back and forth.

4. Lighting system of a display unit according to claim 3, characterized in that the rotary member is a pulley (16; 16d, 16e) arranged to be rotated by a belt (16a, 16a ¹ ; 17a) .

Display lighting system according to any one of the preceding claims, characterized in that said system comprises a single bar (15a) and in that the drive device of the bar (15a) as well as that these are arranged inside an elongate support (20).

6. Lighting system according to claim 1, 2, 3 or 4, characterized in that the system comprises two or three bars (15a, 15b, 15c) parallel to each other.

7. Lighting system according to any one of the preceding claims, characterized in that at least one of the moving light sources is a warm white electroluminescent diode (6c) and at least one of the moving light sources is a white light emitting diode. cold (6f).

8. Lighting system according to any one of the preceding claims, characterized in that all of the moving light sources (6c, 6f) gives a light between 4000 and 5000 Kelvin.

9. lighting system of a display according to any one of the preceding claims, characterized in that it further comprises at least three static light sources (8b, 8r, 8v) arranged to each emit a different primary color so to obtain a color palette, by reflection and dispersion of light from the exposed article (3).

10. Lighting system according to any one of the preceding claims, characterized in that it further comprises a mirror (20) for reflecting light from the light sources (6c, 6f, 7c, 7f, 8b, 8r , 8v) to indirectly illuminate the exposed article (3).

11. Combination of a display (2) for receiving a scintillating article (3) such as a jewelery article, a timepiece, a craft piece or the like, and a display system illumination according to any one of the preceding claims.