FR3058203A1 - LIGHT EMITTING LIGHT EMITTING APPARATUS - Google Patents

Abstract

The apparatus comprises: - a support band (5) comprising an electrically conductive circuit and diodes (4) fixed to this support band, on this conductive circuit; - a housing (6) having a receiving surface (10) of the support strip and an orifice through which a power cable (2) of the electrical apparatus is adapted to be introduced into the housing (6) of way to be connected to the driver circuit; and - said power cable (2). According to the invention: - the housing (6) forms an elongate cavity, located below said receiving surface (10) and opening into this receiving surface; the cavity has a first longitudinal end delimited by an inclined wall in which said orifice is arranged, and a portion (20) situated at the level of the second longitudinal end of the cavity, opposite said first longitudinal end, opening into said surface of reception; the edges of said inclined wall defining said orifice form sharp edges, or at least marked; and - the section of said orifice is adjusted to the cross section of the power cable.

Description

(57) The device includes:

- a support strip (5) comprising an electrically conductive circuit and diodes (4) fixed to this support strip, on this conductive circuit;

- a housing (6) having a receiving surface (10) of the support strip and an orifice through which a power supply cable (2) of the appliance is able to be introduced into the housing (6) of so as to be connected to the conductive circuit; and

- said power cable (2).

According to the invention:

- The housing (6) forms an elongated cavity, located below said receiving surface (10) and opening into this receiving surface; the cavity has a first longitudinal end, delimited by an inclined wall in which said orifice is arranged, and a portion (20) situated at the level of the second longitudinal end of the cavity, opposite to said first longitudinal end, opening into said surface reception; the edges of said inclined wall delimiting said orifice form sharp edges, or at least marked; and

- The section of said orifice is adjusted to the cross section of the power cable.

The present invention relates to a light emitting diode lighting device. This device is especially intended to be used as a wall against profiles, for the exterior lighting of all types of private or public places, and in particular for the lighting of production or storage buildings, such as workshops or warehouses.

It is becoming common these days to use light-emitting diode lighting fixtures, and it is known in particular a technique consisting in placing in a housing a support strip comprising an electrically conductive circuit, the diodes being fixed on this strip, step by step on this circuit, and the conductive circuit of the support strip being connected to the ends of the two electric current supply wires. A transparent resin is poured into the housing, over said support strip and said diodes, so as to isolate these elements from the ambient air and to effect a diffusion of the light emitted by the diodes.

This type of device has a potentially very long service life; however, it appears that the connection of the supply wires to the conductive circuit of the support strip is a critical point, capable of significantly reducing this service life.

The main objective of the present invention is to remedy this essential problem.

It also appears that there is no lighting apparatus capable of being installed according to several possible fixing methods, on all types of support, and the invention also aims to remedy this problem.

The device concerned comprises, in a manner known per se:

- a support strip comprising an electrically conductive circuit and diodes fixed to this support strip, on this conductive circuit;

- A housing having a surface for receiving the support strip and an orifice through which a cable for supplying the appliance with electricity is able to be introduced into the housing so as to be connected to the conductive circuit; and

- said power cable.

According to the invention,

- The housing forms an elongated cavity, located below said receiving surface and opening into this receiving surface; the cavity has a first longitudinal end, delimited by an inclined wall in which said orifice is arranged, and a portion situated at the level of the second longitudinal end of the cavity, opposite to said first longitudinal end; the edges of said inclined wall delimiting said orifice form sharp edges, or at least marked; and

- The section of said orifice is adjusted to the cross section of the power cable.

By virtue of the inclination of said wall and said edges, the housing forms, at the level of said orifice, a means for longitudinally holding the supply cable relative to the housing, protecting the welds which make the connection with the wires of this cable at conductive circuit against the pulls likely to be exerted on this cable when handling the device, particularly when installing the latter.

As a result, the durability of operation of the device is thus perfectly preserved.

Said portion of cavity situated at the second longitudinal end of this cavity advantageously has an extension in the transverse direction with respect to a direction going from said first end to said second end, this portion of cavity allowing the two wires which the power cable can extend in this portion being perfectly separated from each other.

Said portion of the cavity accommodates the welds connecting the supply wires to said conductive circuit and therefore does not exert harmful stresses on these welds.

Said portion of cavity may have a rectangular shape, delimiting a single transverse housing, so that the cavity generally has a T-shape; the housing can also form a central stud at the middle part of said portion of cavity, dividing this portion of cavity into two lateral housings, so that the cavity generally has a Y shape. This central stud makes it possible to perfectly separate the two supply wires.

The housing of the device may have a single cavity as mentioned above; preferably, however, this housing has a second cavity identical to the first cavity but located at a location remote from the first cavity that includes this housing.

These two cavities can be used indifferently according to the needs of the electrical connection of the device during the installation of the latter.

The housing can have an elongated shape, in particular rectangular, and the two cavities can be located at the two longitudinal ends of this housing, being arranged symmetrically to each other with respect to a median transverse axis of the housing. .

The housing of the device can have series of openings at its wall delimiting said receiving surface, allowing efficient evacuation of the heat given off by the diodes.

The openings can in particular be hexagonal in shape and arranged in a honeycomb arrangement.

This arrangement maximizes the area of the openings on the bottom surface of the housing.

Advantageously, the apparatus further comprises:

- C-shaped clips, suitable for fixing the device to a support, each clip comprising a central wall and two side walls defining between them a housing capable of closely receiving a portion of the housing, and the two side walls being able to receive the housing by snap-fastening between them; each clip includes a hole for the passage of a screw for fixing the device to a wall intended to receive this device and / or a conduit for the passage of a collar capable of enclosing a support intended to receive the device d 'lighting, in particular a profile; and or

- openings for clipping one or more pieces of attachment to a support; and or

- magnets mounted on the housing, allowing the device to be mounted on a support by magnetization.

The invention will be clearly understood, and other characteristics and advantages thereof will appear, with reference to the appended schematic drawing representing, by way of nonlimiting example, a preferred embodiment of the lighting fixture concerned.

Figure 1 is a perspective view of this device with its power cable, while the device is mounted on a support profile;

Figure 2 is an exploded perspective view of the various components of the apparatus shown in Figure 1, as well as said support profile; this Figure 2 shows a housing that includes the device, according to a first embodiment;

Figure 3 is a perspective view of a portion of the support profile, as well as a clip and a fixing collar mounted on this profile;

Figure 4 is a view similar to Figure 3 after placement of the housing on this clip;

Figure 5 is a side view of the housing, in section passing through the median longitudinal axis of this housing;

FIG. 6 is a view similar to FIG. 4 after installation in the housing of a support strip comprising light-emitting diodes and installation on this housing of the power supply cable for these diodes, said strip being shown with partial removal;

Figure 7 is a view of the housing similar to Figure 5, after placing said support strip and said power cable in this housing;

Figure 8 is a view similar to Figure 6 after pouring into the housing of a transparent resin from drowning said strip; and Figure 9 is a partial view, from below, of the housing according to a second embodiment.

FIG. 1 represents a lighting device 1 with light-emitting diodes and a support profile 100 to which this device is fixed.

It appears that this section 100 has a substantially C-shaped cross section, that is to say that it delimits a slot 101 on one of its sides, making its internal volume communicate with the outside, and that it has, on either side of this slot 101, interior returns 102; as can be understood with reference to FIGS. 6 and 8, the power cable 2 of the device 1 is intended to be engaged through this slot 101 and to be retained inside the profile 100 by the returns 102, thus being masked.

It appears more particularly in FIG. 2, that the device 1 comprises, in the example shown, a support strip 5 comprising a conductive circuit and light-emitting diodes 4, a housing 6 for receiving this strip 5, three clips 8 for receiving the housing 6 and three collars 9 for fixing these clips 8 to the profile 100. As visible in FIG. 8, the apparatus 1 also comprises a quantity of transparent resin 7 poured into the housing 6 above the strip 5 so as to drown this strip 5 and the diodes 4 which it comprises,

The support strip 5 may in particular be in accordance with the principle described in the publication of patent application No. WO 2012/084662, and may in particular be that supplied by the company Linxens (in Vorey, FRANCE).

The housing 6 has an elongated rectangular shape and, as appears with reference to FIGS. 4 to 8, defines, on most of one of its main faces, a housing 10 for receiving the support strip 5, delimited by a bottom wall forming a surface for receiving this support strip 5, and by a continuous peripheral wall. The housing 10 is able to contain the support strip 5 and the diodes 4 and to receive the resin 7 when the latter is poured onto the strip 5 and the diodes 4, as visible in FIG. 8.

At each of its longitudinal ends, the housing 6 forms an orifice 15 through which the cable 2 is able to be introduced into it so as to be connected to the conductive circuit which comprises the strip 5, and forms an elongated cavity 16, located in- below said receiving surface, which opens into said receiving surface and which communicates with the orifice 15.

As can be seen in FIG. 4, the cavity 16 has a substantially Y shape, having, on the side of the longitudinal end of the housing 6, an elongated portion forming the base branch of the Y and having, on the side of the interior of the case, two divergent portions forming the divergent branches of the Y.

The elongated portion is delimited, at its longitudinal end opposite to said divergent portions, by an inclined wall 22 in which the orifice 15 is arranged. The edges of the inclined wall 22 delimiting the orifice 15 form sharp edges, or at least marked, visible in Figure 5, and the section of this hole 15 is adjusted to the cross section of the power cable 2, so that this cable is adapted to be inserted tightly in this hole, with said edges slightly inserted in the insulating sheath of synthetic material that this cable 2 comprises, as visible in FIG. 7. Thus, thanks to the inclination of the wall 22 and to said edges, the housing 6 forms, at the level of the orifice 15, a holding means longitudinal of the cable 2 relative to the housing 6, protecting the welds 18 which make the connection of the wires contained in this cable to the conductive circuit which the support strip 5 comprises against the tracto ns likely to be exerted on this cable when handling the device, particularly when installing the latter.

The two divergent portions of the cavity 16 are separated by a median stud 17 and make it possible to form two lateral housings for receiving the two wires contained in the power cable 2, thereby making it possible to perfectly separate these two wires.

After connection of the support strip 5 to the wire 2, the support strip 5 is placed in the housing 10 and the transparent resin 7 is poured into this housing until covering the diodes 4.

With particular reference to FIG. 3, it appears that each clip 8 has a C shape, comprising a central wall 24 and two side walls 25 defining between them a housing 26 of rectangular shape capable of closely receiving a portion of the housing 6, the two side walls 25 being able to receive the housing 6 by snap-fastening between them. Each clip 8 has a central hole 28 for the passage of a device fixing screw to a wall intended to receive this device and a conduit 29 for the passage of a collar 9.

Each collar 9 is of known type, with an engagement loop at one end, for engaging the free strand of the collar, this loop and / or this free strand being provided with ribs allowing engagement without return of the free strand in the loop. As shown in Figures 1 and 3, each collar 9 is intended to enclose the profile 100 and to mount a clip 8 on the latter, and therefore to perform the mounting of the device 1 on this profile.

The openings 29 can also be used to clip a clip 8 onto one or more pieces of attachment to a support (not shown), provided with corresponding latching tabs.

As shown in Figure 9, according to a second embodiment, the housing 6 has housings receiving magnets 31, allowing the mounting of the device 1 on a support by magnetization, as well as series of openings 33 at its wall defining said receiving surface. Said openings allow efficient evacuation of the heat given off by the diodes 4. These openings 33 are hexagonal in shape and arranged in a honeycomb arrangement. This arrangement maximizes the area of the openings on the bottom surface of the housing.

The invention thus provides a lighting device having the decisive advantages of making it possible to significantly increase the service life of the device, by protecting the connection of the supply wires to the conductive circuit of the support strip 5 to 1. 'With regard to the pulls likely to be exerted on the cable 2, and to allow the device 1 to be able to be installed in several possible fixing methods, on all types of supports.

Claims (9)

1. Light emitting diode lighting device (1), comprising: - a support strip (5) comprising an electrically conductive circuit and diodes (4) fixed to this support strip, on this conductive circuit; - a housing (6) having a receiving surface (10) of the support strip and an orifice (15) through which a supply cable (2) of the electrical appliance is able to be introduced into the housing ( 6) so as to be connected to the conductive circuit; and - said power cable (2); characterized in that: the housing (6) forms an elongated cavity (16), located below said receiving surface (10) and opening into this receiving surface; the cavity has a first longitudinal end, delimited by an inclined wall (22) in which said orifice (15) is arranged, and a portion (20) situated at the level of the second longitudinal end of the cavity, opposite to said first longitudinal end , opening into said receiving surface; the edges of said inclined wall (22) delimiting said orifice (15) form sharp edges, or at least marked; and - The section of said orifice is adjusted to the cross section of the power cable. 2. Lighting device according to claim 1, characterized in that said portion of cavity (20) located at the second longitudinal end of this cavity has an extension in the transverse direction relative to a direction from said first end at said second end, this portion of cavity (20) allowing the two wires contained in the power cable to be able to extend in this portion while being perfectly separated from each other. 3. Lighting apparatus according to claim 2, characterized in that said portion of cavity has a rectangular shape, delimiting a single transverse housing, so that the cavity generally has a T shape. 4. Lighting apparatus according to claim 2, characterized in that the housing (6) forms a central stud (17) at the middle part of said cavity portion (20), dividing this cavity portion into two housings lateral, so that the cavity (16) generally has a Y shape. 5 5. Lighting apparatus according to one of claims 1 to 4, characterized in that the housing (6) has a second cavity (16) identical to the first cavity (16) but located in a location remote from the first cavity that includes this housing (6). 6. Lighting device according to claim 5, characterized in that the housing has an elongated shape, in particular rectangular, and in that the two cavities (16) are located at the two longitudinal ends of this housing (6) , being arranged symmetrically to each other with respect to a median transverse axis of the housing. 7. Lighting apparatus according to one of the preceding claims, characterized in that the housing (6) has series of openings (33) at its wall defining said receiving surface. 8. Lighting device according to claim 7, characterized in that the openings (33) are hexagonal and arranged in a honeycomb arrangement. 20 9. Lighting apparatus according to one of the preceding claims, characterized in that it comprises: - C-shaped clips (8), suitable for fixing the device to a support, each clip (8) comprising a central wall (24) and two side walls (25) defining between them a housing (26 ) able to receive closely A portion of the housing (6), the two side walls (25) being able to receive the housing (6) by snap-fastening between them; each clip (8) comprises a hole (28) for the passage of a device fixing screw to a wall intended to receive this device and / or a conduit (29) for the passage of a collar capable of enclosing a support intended to receive the lighting apparatus, in particular a profile; and or -magnets (31) mounted on the housing (6), allowing the mounting of the device (1) on a support (100) by magnetization. 2/4 CM