WO2011141640A1

WO2011141640A1 - Lamp for a swimming pool and floodlight incorporating such a lamp

Info

Publication number: WO2011141640A1
Application number: PCT/FR2010/050941
Authority: WO
Inventors: Philippe Poma; Didier Vincent; Jacques Patacchini; André LORENZI
Original assignee: Royalux
Priority date: 2010-05-14
Filing date: 2010-05-14
Publication date: 2011-11-17

Abstract

The invention relates to a lamp for a swimming pool comprising a bracket (10) within which a light source (11) is mounted, said bracket having an optical device (12) arranged facing said light source built therein, characterized in that: the bracket (10) has: a first sealed chamber (161) within which the light source (11)is placed, said first chamber being closed off by the optical device (12), a second sealed chamber (160) in which the connection between an electrical supply cable (5) and the light source (11) is established, said second chamber being accessible from the back of said bracket, a sealed partition (200) separating the first chamber (161) from the second chamber (160), and into which the elements (50) for connecting the electrical supply cable (5) to the light source (11) are sealingly built, the second chamber (160) is closed off in a sealed manner by a removable sleeve (170, 1700) gripping an electrical supply cable (5) in a sealed manner.

Description

LAMP FOR SWIMMING POOL AND PROJECTOR INTEGRATING A

Such a lamp

Description

Technical Field of the Invention The invention relates to a pool lamp and a projector incorporating such a lamp.

It concerns the technical field of projectors intended to be immersed in water, in particular those positioned in a wall of the pool of a swimming pool and using lamps called "PAR 56 lamps".

State of the art A lamp for conventional pool lamp type PAR 56 is shown schematically in Figures 1 to 3 attached. This lamp 1 'is mounted in a circular niche 2' positioned (sealed) in the thickness of a wall 3 'of a swimming pool. A circular flange 4 'keeps the lamp 1' in position in the niche 2 '. The lamp 1 'comprises a support 10' inside which is mounted a light source 1 1 '. An optic 12 'disposed opposite the light source 1 1' sealingly closes the support 10 '. This optic 12 'makes it possible to diffuse into the pelvis, the light emitted by the light source 11'. In practice, the flange 4 'has an opening through which the optics 12' is positioned. A cable 5 'provides power to the light source 1 1'. The cable 5 'is connected to a housing of connection and / or supply 500 '. Removable connection elements 50 'provide the connection between the cable 5' and the light source 1 1 '. The connection elements 50 'are typically lugs for contacting the stripped end of the cable 5' with the connecting branches of the light source 1 1 '. The connection elements 50 'are arranged outside the support 10', at the rear of the latter. Depending on the current source available, a transformer must be provided to transform the 100 V or 220 V of the network into 12 V. For safety reasons, this transformer is placed outside the device and outside the pool. 'water.

The niche 2 'being immersed in water, it is necessary to ensure a seal around the connection elements 50' to avoid any risk of short circuit. To do this, it is commonly used a sealing bell 6 'disposed in the recess 2'. This bell 6 'encompasses all the support 10', except the optic 12 'which remains free. A seal 60 'is placed between the outer wall of the support 10' and the inner wall of the bell 6 'so as to form a seal. By screwing the bell 6 'on the flange 4', the support 10 'tends to crush the seal 60' and seal. A sealed chamber 61 'is thus created around the connection elements 50', at the rear of the support 10 ', said chamber being delimited by the external part of said support and the internal part of the bell 6' and sealed by the seal 60 '. It is sufficient to provide a gland 62 'at the rear of the bell 6' to seal the passage of the cable 5 'to the sealed chamber 61'.

In practice, a certain length of cable 5 'is wound around the outer wall of the bell 6' so as to be able to pull the lamp 1 'out of the basin, and place it on the lip 30' (FIG. 3) without having to empty the water from the pool. To replace a faulty lamp 1 ', it should be out of the niche 2' by unlocking or by unscrewing the flange 4 'fixed on said niche. Output of the latter, the lamp 1 'has a sufficient length of cable 5 'in reserve to allow the out of the water and put it on the rim 30'. The bell 6 'is then unscrewed to separate it from the flange 4'. In a safe manner, the connection elements 50 'of the cable 5' can then be detached to remove the support 10 'and replace it.

While the majority of PAR 56 lamps adopt this concept, the fact remains that some defects exist. Firstly, if the outer wall of the bell 6 'is in contact with the water of the basin (the inside of the niche 2' being entirely immersed), the outer wall of the support 10 ', in particular the part arranged in the sealed chamber 61 'is perfectly dry. However, the light source 11 ', which is generally a 300 W incandescent lamp, releases a significant amount of heat that must be evacuated. Since the water does not come into contact with the back of the support 10 ', the latter can heat excessively and irreversibly degrade.

In addition, if the seal 60 'is not perfectly positioned, particularly as a result of improper mounting, the chamber 61' is no longer perfectly sealed and a short circuit may occur at the connection elements 50 '.

In addition, as clearly shown in Figure 2, it is necessary to provide a large number of screws 40 'to fix homogeneously the bell 6' on the flange 4 '. This uniformity of attachment ensures a perfect seal at the joint 60 '. However, the screws 40 'cause a loss of time during installation and / or when the disengagement of the bell 6' on the flange 4 '.

Another problem lies in the fact that the use of the bell 6 'requires the use of a significant amount of plastic material which affects the cost of the luminaire.

In view of this state of affairs, the main objective of the invention is to propose a new lamp of the lamp type PAR 56, whose sealing at connection element level is improved, while allowing efficient removal of the calories emitted by the light source.

Another object of the invention is to provide a new lamp designed to adapt to the projectors of existing installations, so as to easily replace conventional PAR 56 lamps.

Yet another object of the invention is to provide a projector whose design and assembly are simpler than those of the prior art, and requiring a smaller amount of raw material for its production.

Disclosure of the invention.

The solution proposed by the invention is a pool lamp comprising a support inside which is mounted a light source, said support incorporating an optical arranged opposite said light source. This lamp is remarkable in that:

- the support presents:

a first sealed chamber inside which the light source is placed, said first chamber being closed by the optic,

a second sealed chamber in which is made the connection between a power supply cable and the light source, said second chamber being accessible from the rear of said support,

o a watertight partition separating the first chamber from the second chamber, and in which are sealed elements to connect the power supply cable to the light source,

- The second chamber is closed sealingly by a removable sleeve sealingly enclosing a power supply cable. The second sealing chamber, within which the connection elements are positioned, is now directly integrated at the rear of the support. It is therefore no longer necessary to use a bell to protect the connection elements, nor to use the seal placed in said bell. Without this bell, in addition to the material gain generated, the entire support is likely to be in contact with the water basin, which helps to improve the evacuation of the heat emitted by the light source. In addition, the first chamber in which is positioned the light source being sealed, even if water enters the second chamber, said light source remains perfectly isolated and protected.

To improve the sealing of the second chamber, the sleeve includes a deformable seal, a clamping member deforming said seal so as to seal the passage of the cable in said sleeve.

In an alternative embodiment for simplifying the design of the lamp, the sleeve is made of a deformable material, said sleeve being dimensioned so as to deform radially when it is introduced into the second chamber and seal the passage of the cable in said scabbard.

The light source is advantageously associated with an optics comprising micro-lenses distributed homogeneously over the entire internal surface of said optics. Advantageously, the microlenses have a diameter of between 2 mm and 5 mm for a depth varying from 1 mm to 5 mm, said microlenses being substantially contiguous to each other. This specific optic allows a better diffusion of the light in the water and a more harmonious mixture of the colors emitted by the light source in the water. According to a preferred embodiment, the light source consists of monochrome or polychromatic light-emitting diodes mounted on a platen arranged in the first chamber, said platen being connected to the connection elements, the lighting of said light-emitting diodes being controlled via an electronic management unit that can be activated by remote control or directly programmed. The user thus has the choice between a large number of lighting effects.

According to a particular embodiment, the light source is constituted by light-emitting diodes of power, the inner surface of the optics being polished so as to obtain a good diffusion of the light in the water and possibly to optimize the mixing of the colors when said diodes are polychrome. More particularly, the subject of the invention is a projector comprising:

a niche intended to be positioned in the thickness of a wall of a swimming pool and inside which a lamp is mounted, a collar for holding said lamp in said niche,

the lamp comprising a support inside which a light source is mounted, said support incorporating an optic arranged facing said light source,

- A cable for the power supply of the light source, connecting elements providing the connection between said cable and said light source.

This projector is remarkable in that:

- the support presents:

o a second sealed chamber in which is made the connection between a power supply cable and the source light, said second chamber being accessible from the rear of said support,

o a watertight partition separating the first chamber from the second chamber, and in which are sealed the elements to connect the power supply cable to the light source,

- The second chamber is closed sealingly by a removable sleeve sealingly enclosing a power supply cable.

Advantageously, at least one fixing paste encloses the support, said paste being fixed on the collar so as to secure said support to said collar.

In order that the fixing paste does not hinder the passage of water around the support, it advantageously comprises:

a ring which bears on an external edge of the support,

- Fastening branches having one end secured to the ring and the other end fixed on the collar.

In an alternative embodiment, the flange comprises directly fixing clips solidarisant the support to said flange, to maintain the lamp.

Description of the figures.

Other advantages and characteristics of the invention will appear better on reading the description of a preferred embodiment which will follow, with reference to the accompanying drawings, carried out as indicative and non-limiting examples and in which: - Figure 1 above is a schematic sectional view showing the installation and arrangement of a lamp type PAR 56, in a projector installed in the wall of a pool pool,

- Figure 2 above is a sectional view along A-A of the projector of Figure 1, the light source and the walls of the pool are not shown,

- Figure 3 above is a schematic sectional view showing the lamp of Figure 1 placed on the edge of a pool pool,

FIG. 4 is a diagrammatic sectional view showing the installation and arrangement of a lamp according to the invention, in a projector installed in the wall of a swimming pool,

FIG. 5 is an exploded schematic view of the single projector represented in FIG. 4;

FIG. 6 is a schematic perspective view showing a principle of fixing the lamp which is the subject of the invention to a flange,

FIG. 7 is a schematic view showing in detail the various constituent elements of a lamp according to the invention,

FIG. 8 is an exploded view of the lamp represented in FIG. 7,

FIG. 9 is a schematic view showing in detail the various elements constituting a lamp in a variant embodiment,

FIG. 10 is an exploded view of the lamp shown in FIG. 9;

- Figure 1 1 is an enlarged view showing in detail a sectional optics.

Embodiments of the invention

The lamp object of the invention is intended to be installed in the pool of a pool filled with water and is therefore intended to be immersed. For the purposes of the present invention, the term "swimming pool" should be understood as including not only traditional pools, but also any pools, spas or fountains. Referring to Figures 4 to 6 and more particularly to Figures 7 and 8, the lamp 1 object of the invention comprises a support 10 inside which is mounted a light source 1 1 electrically powered by a cable 5 connected to a connection box and / or power 500. For safety reasons, the light source 1 1 generally operates at 12 V. Depending on the available power source, it is necessary to provide a transformer for transforming the 100 V or the 220 V 12 V network. For safety reasons, this transformer is located outside the device and outside the water basin.

In practice, the support 10 is a rigid piece of parabolic form obtained by plastic molding, for example ABS or polycarbonate. Its front face is circular, with a diameter equivalent to the diameter of conventional PAR 56 lamps. Referring to Figures 7 and 8, the inner wall of the support 10 may comprise reinforcing ribs 100.

The light source 1 1 is preferably composed of monochrome or polychromatic light emitting diodes, although it is conceivable to use a halogen bulb, a conventional filament bulb or a neon tube. In practice, the diodes are mounted on a plate fixed against the inner wall of the support 10. In general, by light source 1 1 is meant in the sense of the present invention any means capable of diffusing light, consisting of a alone or several bright spots. The diodes used may be so-called power diodes that generate a much higher luminous flux than conventional diodes. These power diodes generally have an electrical power greater than or equal to 0.1 Watt, some up to several tens of watts. In the case where light-emitting diodes (of power or not) are used, their lighting is preferably controlled by via an electronic management unit arranged in the inner part of the support 10. For example, this management unit can be fixed on the rear face of the plate supporting the diodes. This management unit can be activated by remote control or directly programmed. The user has the ability to generate, according to his desire or programmed, many light effects possibly combined with color schemes.

The front face of the support 10, by which the light source 1 1 is put in place, is sealingly closed by an optical or lens 12 made of glass or plastic (for example polycarbonate) translucent or transparent. The support 10 thus has a first sealed chamber 161 within which is placed the light source 1 1, said first chamber being closed by the optic 12. The latter is convex and may have on its surface facets for the diffusion light and mixing colors in the water. The optic 12 fits on a rim provided at the front face of the support 10. The attachment of the optic 12 on this edge is preferably done by an ultrasonic welding technique which ensures optimum sealing. However, it is possible to target the optic 12 on the support 10 in which case a seal will be provided to ensure sealing. The latter solution has the advantage of making accessible the light source 1 1 in case of malfunction.

One preferred embodiment of optics 12 is shown in FIG. 1 1. This optic 12 has been developed to answer the problem of the diffusion of light and the mixing of the colors emitted by the same light source, into the water. The inner surface of the optics consists of microlenses or verrines 1200 whose size and number allow it to adapt to any type of light source 1 1 (light-emitting diodes, incandescent lamps, halogens, ...) . In practice, the microlenses 1200 have a diameter of between 2 mm and 5 mm for a depth varying from 1 mm to 5 mm. They are homogeneously distributed over the entire internal surface of optics 12, that is to say they are substantially contiguous to to each other. The optic 12 has a curved surface whose diameter is between 50 mm and 150 mm. The curve of the optics 12 associated with the depth of the microlenses 1200 determines the angle of diffusion of the light with respect to the position of the light source 1 January.

When power diodes are used, the inner surface of the optic 12 is advantageously polished so as to obtain a good diffusion of the light in the water and possibly optimize the color mixing when said diodes are polychromatic. According to the invention, and as shown schematically in FIGS.

8, the rear portion of the support 10 has a second sealed chamber 160 in which is made the connection between the power supply cable 5 and the light source 1 1. The first chamber 161 and the second chamber 160 are adjacent, separated by a 200, obtained during the molding of the support 10. The second chamber 160 is accessible directly from the rear of the support 10. In practice, this second chamber 160 is obtained directly during the molding of the support 10 and is in the form of a cylinder having an internal diameter of between 2 cm and 10 cm and a depth of between 1 cm and 5 cm.

The partition 200 tightly integrates the elements 50 to connect the power supply cable 5 to the light source 1 1. These connection elements 50 are typically metal connectors directly molded in the partition 200 and which open into each of the two chambers 160 and 161. It is also possible to use demountable connection elements, which screw tightly in the partition 200. In the first chamber 161, the connection elements 50 have ends on which are fixed, for example by screwing, lugs electrically connected to the light source 1 1. Similarly, in the second chamber 160, the connection elements 50 have ends on which are fixed, for example by screwing, lugs electrically connected to the cable 5. The connection elements 50 are now arranged directly in the support 10, inside the second chamber 160.

In the embodiment shown in Figures 7 and 8, the inner wall of the second chamber 160 is threaded to receive a removable sleeve 170 which seals tightly. The sheath 170 is in the form of a substantially cylindrical plastic part, whose lower end has an external thread cooperating with the tapping of the second chamber 160. The sheath 170 can thus be easily disassembled to leave completely free the second chamber 160 and have access to the connection elements 50 to connect / disconnect the cable 5. The sheath 170 may have a shoulder that comes into contact with the rim of the second chamber 160 during screwing. In this case, a seal 171 is advantageously provided on the rim of the second chamber 160, so as to seal the sheath / second chamber connection.

The sheath 170 includes a seal 172 enclosing the power supply cable 5. This seal 172 seals the passage of the cable 5 in the sheath 170. In practice, the seal 172 is a deformable piece, typically rubber, of The upper end of the sleeve 170 has an internal housing, also of conical shape but slightly smaller than the seal 172. There is provided a clamping member 173 which deforms the seal 172 so as to seal the passage of the cable 5 in the sleeve 170. The clamping member 173 is preferably a nut screwed to the upper end of the sleeve 170. During screwing, this nut crushes the seal 172 in its housing, and by deforming said seal seals between the cable 5 and the sheath 170.

In the embodiment shown in Figures 9 and 10, the sheath 1700 is made of a deformable material, for example silicone. This sheath 1700 has a central opening 1705 adjusted to the outer diameter of the cable 5 and inside which said cable passes. The sheath 1700 is dimensioned so as to deform radially when it is introduced into the second chamber 160 and seal the passage of the cable 5 in said sheath. In practice, the sheath 1700 is mounted tightly in the second chamber 160, its outer diameter being greater than the internal diameter of the second chamber 160. In this way, when the sheath 1700 is fitted into the second chamber 160, it deforms radially and ensures sealing around the cable 5. To maintain the position of the sleeve 1700 in the second chamber 160, grooves and / or ribs 1701 may be formed on the outer surface of said sleeve so as to cooperate with ribs and / or complementary grooves provided on the inner surface of said second chamber. To improve the sealing at the sheath / second chamber connection, deformable lips 1702 are disposed on the outer surface of said sheath 1700.

The connection / disconnection of the cable 5 on the lamp 1 is therefore very easy.

In the embodiment shown in Figures 7 and 8, to change a deteriorated lamp, it first unscrews the nut 173 and out the seal 172 of its housing. The sheath 170 is then unscrewed to release the passage in the second chamber 160 and allow easy access to the connection elements 50. The nut 173, the seal 172 and the sheath 170 remain freely positioned around the cable 5. To separate the lamp 1 damaged, is disconnected the stripped end of the cable 5 of the connection elements 50. Then reconnects the cable 5 on the connection elements 50 of a new lamp 1 functioning properly. Just screw the sheath 170 into the second chamber 160 of this new lamp 1, to put in place the seal 172 in its housing and to tighten with the nut 173 to seal.

In the embodiment shown in FIGS. 9 and 10, it suffices to simply extend the sleeve 1700 from the second chamber 160 to allow access to the connection elements 50 and disconnect the stripped end of the cable 5. The sleeve 1700 remains positioned around the cable 5. The cable 5 is then reconnected to the connection elements 50 of a new lamp 1 and it is sufficient to re-sheath the sheath 1700 in the second chamber 160 to seal.

Referring to Figure 4, the lamp 1 object of the invention is intended to be installed in the pool of a swimming pool in use, replacing conventional PAR 56 lamps. In fact, the lamp 1 is mounted in a projector having an existing recess 2 already installed in a wall 3 of the basin. And the collar 4, used to hold the conventional PAR 56 lamp in position, is also used to hold the lamp 1 in position in the recess 2, the optic 12 being positioned through the opening 41 of said collar. The sealed bell of the prior art is no longer used, it is important to fix the lamp 1 on the flange 4. An advantageous solution shown in Figures 4, 5 and 6, consists of providing at least one fixing paste 8 which encloses the support 10, said paste being fixed on the flange 4 so as to secure said support to said flange. In practice, the fixing paste 8 comprises a ring 80 which bears on an outer edge of the support 10. Fastening branches 81, which are at least two in number, have one end secured to the ring 80 and the other end attached to the flange 4. In this way, by fixing the fastening branches 81 on the flange 4, the ring 80 will press the entire support 10 against said flange. Fixing the attachment branches 81 on the flange 4 is for example made by screwing, using the already existing threads for fixing the waterproof bell of the prior art. With such a fixing paste 8 the water contained in the niche 2 can come into contact with the support 10 to evacuate the calories. As in the assemblies of the prior art, a certain length of cable 5 can be wrapped around the branches 81 of the dough. fixing 8 so as to be able to take the lamp 1 out of the basin and put it on the edge 30 of the swimming pool.

To avoid having to use the fixing paste 8, the flange 4 directly comprises fastening clips solidarisant the support 10 to said flange. These fixing clips are preferably, but not necessarily, arranged at the opening 41.

Claims

claims

A swimming pool lamp comprising a support (10) inside which a light source (1 1) is mounted, said support integrating an optical element (12) arranged facing said light source,

characterized by the fact that:

the support (10) presents:

a first sealed chamber (161) inside which the light source (1 1) is placed, said first chamber being closed by the optic (12),

a second sealed chamber (160) in which the connection between a power supply cable (5) and the light source (1 1) is made, said second chamber being accessible from the rear of said support,

o a watertight bulkhead (200) separating the first chamber (161) from the second chamber (160), and in which elements (50) are sealingly integrated for connecting the power supply cable (5) to the light source (1 1), - the second chamber (160) is closed sealingly by a removable sleeve (170, 1700) sealingly enclosing a power supply cable (5).

2. Lamp according to claim 1 wherein the sleeve (170) incorporates a seal (172) deformable, a clamping member (173) deforming said seal so as to seal the passage of the cable (5) in said sleeve.

3. Lamp according to claim 1 wherein the sleeve (1700) is made of a deformable material, said sleeve being dimensioned so as to deform radially when it is introduced into the second chamber (160) and seal the passage of the cable ( 5) in said sheath.

4. Lamp according to one of the preceding claims, wherein microlenses (1200) are distributed homogeneously over the entire inner surface of the optics (12), said microlenses having a diameter of between 2 mm and 5 mm for a depth ranging from 1 mm to 5 mm, said mico-lenses being substantially contiguous to each other.

5. Lamp according to one of the preceding claims, wherein the light source (1 1) consists of monochrome or polychromatic light-emitting diodes mounted on a plate arranged in the first chamber (161), said plate being connected to the connection elements ( 50), the illumination of said light-emitting diodes being controlled by means of an electronic management unit that can be activated by remote control or directly programmed.

6. Lamp according to one of the preceding claims, wherein the light source (1 1) consists of light emitting diodes power, the inner surface of the optics being polished.

7. Lamp according to one of the preceding claims, characterized in that it is a lamp PAR 56.

8. Projector comprising:

- a recess (2) intended to be positioned in the thickness of a wall (3) of a swimming pool and inside which is mounted a lamp (1), a flange (4) to maintain in position said lamp in said niche, - the lamp (1) comprising a support (10) inside which is mounted a light source (1 1), said support incorporating an optical (12) disposed opposite said light source,

- a cable (5) for the power supply of the light source (1 1), connection elements (50) providing the connection between said cable and said light source,

characterized in that the lamp (1) is in accordance with claim 1, that is:

the support (10) presents:

o a watertight partition (200) separating the first chamber (161) from the second chamber (160), and in which the elements (50) are integrally sealed to connect the power supply cable (5) to the light source (1 1),

- The second chamber (160) is sealingly closed by a removable sleeve (170, 1700) sealingly enclosing a power supply cable (5).

9. Projector according to claim 8, wherein at least one fixing paste (8) encloses the support (10), said paste being fixed on the flange (4) so as to secure said support to said flange.

10. Projector according to claim 8, wherein the flange (4) directly comprises fastening clips solidarisant the support (10) to said collar