EP2594245B1 - Lighting device for a swimming pool. - Google Patents

Lighting device for a swimming pool. Download PDF

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Publication number
EP2594245B1
EP2594245B1 EP12192712.3A EP12192712A EP2594245B1 EP 2594245 B1 EP2594245 B1 EP 2594245B1 EP 12192712 A EP12192712 A EP 12192712A EP 2594245 B1 EP2594245 B1 EP 2594245B1
Authority
EP
European Patent Office
Prior art keywords
light
emitting diodes
plate
dome
reflective
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP12192712.3A
Other languages
German (de)
French (fr)
Other versions
EP2594245A1 (en
Inventor
Philippe Poma
Didier Vincent
André LORENZI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PPLV Trading Sia (SA)
Original Assignee
PPLV Trading Sia (SA)
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Publication of EP2594245A1 publication Critical patent/EP2594245A1/en
Application granted granted Critical
Publication of EP2594245B1 publication Critical patent/EP2594245B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V27/00—Cable-stowing arrangements structurally associated with lighting devices, e.g. reels 
    • F21V27/02—Cable inlets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/506—Cooling arrangements characterised by the adaptation for cooling of specific components of globes, bowls or cover glasses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/71—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements
    • F21V29/713—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements in direct thermal and mechanical contact of each other to form a single system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
    • F21V29/763—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
    • F21V29/86—Ceramics or glass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
    • F21V29/89—Metals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/09—Optical design with a combination of different curvatures
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H33/00—Bathing devices for special therapeutic or hygienic purposes
    • A61H33/005—Electrical circuits therefor
    • A61H2033/0083—Illumination
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2121/00—Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00
    • F21W2121/02—Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00 for fountains
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/40—Lighting for industrial, commercial, recreational or military use
    • F21W2131/401—Lighting for industrial, commercial, recreational or military use for swimming pools
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
    • F21Y2103/33—Elongate light sources, e.g. fluorescent tubes curved annular
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the invention relates to a pool lighting device.
  • the document WO2005 / 108203 (SAVAGE ) teaches to use a heat conductive plate on which light-emitting diodes are mounted.
  • the plate is arranged at the bottom of the support so as to be in contact with a trickle of water from the pool. This trickle of water allows to cool the plate as well as the electroluminescent diodes which are mounted on it.
  • the small amount of water that stagnates behind the support does not effectively cool the light emitting diodes and they still end up overheating and degrade.
  • the main purpose of the invention is to provide an improved swimming pool lighting device enabling efficient and rapid cooling of the light-emitting diodes so that the latter do not degrade.
  • the plate By being arranged directly on the optics, the plate is now in direct contact with a large volume of non-stagnant water, which promotes heat exchange, so that said plate is cooled sufficiently quickly and efficiently so that the light-emitting diodes do not overheat. not and do not degrade.
  • the reflection means acts as a backlight element, and allows to redirect all or part of the light flux generated by the light emitting diodes to the outside of the optics, and therefore to the water basin.
  • the lighting device of the invention is intended to be immersed in the water of a swimming pool.
  • it is intended to be fixed on the wall of a swimming pool. It can be installed in a specific niche made in a wall of the swimming pool or inserted into a brush socket or an outlet.
  • the term "pool” should be understood to include not only traditional pools above ground or buried, but also any pools, spas or fountains.
  • the lighting device (1) comprises a support (2) which is a rigid one-piece piece obtained by plastic molding, for example ABS or polycarbonate.
  • the support (2) preferably has a concave parabolic shape whose front portion is open. It comprises an inner wall (20) and an outer wall (21).
  • the support section (2) is preferably circular, but may be square, hexagonal or any other shape. In the case of a circular section, the largest diameter varies from 100 mm to 400 mm, preferably 220 mm.
  • the thickness of the support (2) varies from 2 mm to 6 mm, preferably 4 mm.
  • the inner wall (20) may include reinforcing ribs.
  • the open front part of the support (2) is closed by an optic (5).
  • the support (2) and the optics (5) delimit a hollow chamber (9).
  • the rear of the support (2) is preferably provided with a tubular element (4) opening on either side of said support.
  • the outer wall of this tubular element (4) can be threaded so that the support (2) can be screwed inside an existing discharge nozzle or brush socket and already installed in a wall of the pool.
  • the tubular element (4) delimits a second sealed chamber (11) in which the connection between a power supply cable (10) and the light-emitting diodes (8) is made.
  • the first chamber (9) and the second chamber (11) are adjacent, separated by a partition (22) sealed during molding of the support (2).
  • the second chamber (11) is accessible directly from the rear of the support (2).
  • the partition (22) sealingly integrates elements (23) for connecting the power supply cable (10) to the light-emitting diodes (8).
  • connection elements (23) are typically metal connectors directly molded into the partition (22) or reported, and which open into each of the two chambers (9, 11).
  • the connection elements comprise ends on which are fixed, for example by screwing, lugs electrically connected to the light emitting diodes (8) via one or more electrical cables (24).
  • the connecting elements (23) comprise ends on which are fixed, for example by screwing, lugs electrically connected to the power supply cable (10).
  • the inner wall of the second chamber (11) is threaded so as to receive a removable sleeve (26) which seals it tightly.
  • the sheath (26) incorporates a tight seal (28) enclosing the power supply cable (10).
  • This seal (28) seals the passage of the power supply cable (10) in the sleeve (26).
  • the seal (28) is a deformable piece, typically made of rubber, of conical shape and inside which passes the power supply cable (10).
  • the upper end of the sleeve (26) has an inner housing, also of conical shape but slightly smaller than the seal (28).
  • the clamping member (29) which deforms the seal (28) to seal the passage of the power supply cable (10) in the sleeve (26).
  • the clamping member (29) is preferably a nut screwed to the upper end of the sleeve (26). When screwing, this nut crushes the seal (28) in its housing, and deforming said seal seals between the power supply cable (10) and the sleeve (26).
  • the optic (5) is made of glass or translucent or transparent plastic material. It has a convex parabolic shape and can incorporate facets allowing the homogeneous diffusion of the light and the mixture of the colors in the water.
  • the optic (5) has a section that corresponds to that of the support (2). It is sealed in the open front part of the support (2). This fixation is achieved by screwing combined with one or more joints, by ultrasonic welding, by bonding, or any other technique suitable for the skilled person.
  • the light-emitting diodes (8) are arranged on the front face (130) of at least one heat conducting plate (13).
  • the plate (13) can have a circular, square, hexagonal or other shape and be composed of one or more pieces. It is made of metal, ceramic or any other heat conducting material suitable for the skilled person.
  • Its rear face (131) may be coated with a layer of corrosion-resistant material such as paint layer, plastic layer, or the like, or else undergo a surface treatment such nitriding, chromating, plasma spraying, or other.
  • the plate (13) consists of a flat cylindrical piece, having a diameter that may for example vary from 10 mm to 100 mm and a thickness that may for example range from 1 mm to 10 mm.
  • the light emitting diodes (8) are preferably previously fixed, typically by welding, on a printed circuit (14) itself fixed on the front face (130) of the plate (13).
  • the printed circuit (14) and the plate (13) can be fixed against each other by welding, gluing, screwing, riveting, or other.
  • the light-emitting diodes (8) can, however, be directly attached to the front face (130) of the plate (13). In any case, the heat emitted by the light-emitting diodes (8) is discharged by the plate (13).
  • Light-emitting diodes (8) can be monochrome or polychromatic. Thanks to the invention, it is possible to use so-called power diodes that generate a luminous flux much higher than conventional light emitting diodes. These power diodes generally have an electrical power greater than or equal to 0.1 Watt, some up to several tens of Watts.
  • the illumination of the light-emitting diodes (8) is preferably controlled via an electronic management unit fixed on the printed circuit (14).
  • This management unit which is in the form of a processor or a microprocessor, can be activated by remote control or directly programmed. The user has the possibility to generate according to his desire or programmed, many light effects possibly combined with color schemes.
  • the light-emitting diodes (8) operate at 12 V.
  • this transformer is disposed outside the device object of the invention and outside the water basin.
  • the light-emitting diodes (8) and in particular the management unit are preferably fed via the power supply cable (10).
  • the end of this cable is connected to a power source, typically the mains.
  • the transformer can either be integrated directly into the power supply cable (10) or be attached. In the latter case, the power supply cable (10) connects to the transformer and it is the latter which is connected to the mains.
  • the plate (13) is arranged directly on the optics (5) so that the light-emitting diodes (8) are located in the hollow chamber (9) and that all or part of its rear face (131) is located outside of said chamber to be directly in contact with the pool water.
  • the plate (13) and the diodes (8) can thus be effectively cooled.
  • the optic (5) has an orifice which is preferentially, but not necessarily, positioned in the center of said optic.
  • a central hole provides a symmetrical and homogeneous illumination inside the optics.
  • This orifice serves as a housing for the plate (13).
  • the orifice may comprise a shoulder (50) ensuring the positioning of the plate (13). The holding in position is obtained by welding, gluing or screwing.
  • a seal (51) seals the connection between the plate (13) and the optic (5).
  • the plate (13) is directly molded in the optics (5) so that it is not necessary to provide a seal.
  • the rear face (131) of the plate (13) can be flat ( figure 4 ) or have recessed and / or raised elements (135) ( figure 5 ). In the latter case, the heat exchange surface with the pool water is increased and the cooling of the light-emitting diodes (8) more efficient.
  • the entire rear face (131) of the plate (13) is in contact with the pool water.
  • the plate (13) is directly molded in the otic (5), only a portion of the rear face (131) may be in contact with the pool water.
  • the light-emitting diodes (8) are arranged perpendicularly to the front face (130) of the plate (1).
  • the entire luminous flux (F) emitted by the diodes (8) is oriented towards the rear of the support (2), that is to say in a direction opposite to that of the optics ( 5).
  • the light-emitting diodes (8) can also be arranged parallel to the front face (130) of the plate (1) or obliquely. In this case, only a part of the luminous flux (F) is directed towards the rear of the support (2).
  • a reflection means is arranged in the hollow chamber (9), facing each other electroluminescent diodes (8).
  • this means of reflection preferably consists of a part (18) comprising a reflective frustoconical body (180) whose flared base is provided with a reflecting cupola (181) extending into the hollow chamber (9).
  • the plate (13) is arranged at the top of the frustoconical body (180), and more particularly at its narrow end.
  • this end is advantageously provided with a centering pin (184) adapted to be inserted into a complementary housing provided in the printed circuit (14) and / or in the plate (13).
  • the piece (18) is fixed on the support (2) by screwing, gluing, welding, or other.
  • the reflective dome (181) comprises fixing means (183). This is for example pins lodged in complementary housing provided on the inner wall of the support (2).
  • the parabolic curvature of the frustoconical body (180) is such as to redistribute all or part of the luminous flux (F) towards the optics (5) and thus towards the water basin.
  • the frustoconical body (180) can be made of metal, composite material or other, its outer face being covered with a layer of a reflective material of the type chrome, aluminum, silver, etc.. It can, however, be made directly in a reflective material of the aluminum, silver, or other type.
  • the height of the frustoconical body (180) varies from 10 mm to 100 mm. It has a hollow inner portion (184) through which the power supply cables (24) pass.
  • the reflective dome (181) is made of the same material as the frustoconical body (180). It can be attached to the base of the latter or formed a one-piece piece with said body.
  • the diameter of the dome (181) is such that its outer rim is substantially in contact with the inner wall of the support (2) and / or with the inner wall of the optic (5). It has an outer diameter ranging from 100 mm to 400 mm, preferably about 220 mm.
  • the dome (181) may have a conical shape of straight or curved profile, a hyperbolic shape, or any other profile suitable for the skilled person.
  • the inner face of the dome (181) which is situated on the same side as the light-emitting diodes (8) is advantageously concave and comprises grooves (182) contiguous and concentric with the axis (A) of said dome.
  • this axis (A) is coaxial with the axis of the frustoconical body (180) and that of the optics (5).
  • the grooves (182) provide a homogeneous reflow of the luminous flux (F) to the optics (5) and thus to the pelvis, with a large angle of reflection.
  • the grooves (182) are of circular section, their radius varying from 1 mm to 20 mm.
  • the inner face of the dome (181) may comprise other facet type reflection means or hollow reflection elements and / or reliefs ensuring a homogeneous and diffuse reflection of the luminous flux (F).
  • the reflection means consists of a reflective dome (18 ') arranged vis-à-vis the light-emitting diodes (8).
  • the diameter of the dome (18 ') corresponds to that of the optic (5) so that it extends throughout the chamber (9).
  • the cupola (18 ') may have a conical shape of straight or curved profile, a hyperbolic shape, or any other profile suitable for those skilled in the art.
  • the inner face of the cupola (18 ') which is located opposite the light-emitting diodes (8) is advantageously concave and comprises furrows (182') contiguous and concentric to the axis (A) of said dome.
  • the grooves (182 ') are similar to those described above with reference to the figure 1 and are arranged in the same way.
  • the inner face of the dome (18 ') may comprise other facet type reflection means or hollow reflection elements and / or reliefs ensuring a homogeneous and diffuse reflection of the luminous flux (F).
  • One or more orifices (184 '), preferably arranged in the center of said reflecting cupola, ensure the passage of the power supply cables (24) of the light-emitting diodes (8).
  • the dome (18 ') can be attached to the support (2) or formed a one-piece piece with the optics (5) and be obtained during molding of said optics.
  • a reflective coating (185 ') is applied against the inner face of said cupola which is located vis-à-vis the light-emitting diodes (8).
  • This coating (185 ') is typically based on chromium, aluminum, silver or any other reflective material. It may be in the form of a paint, a flexible sheet, or any other form suitable to those skilled in the art.
  • the reflection means consists of a reflective coating (18 ") applied directly against the inner wall (20) of the support (2) which is located opposite the light-emitting diodes (8).
  • the inner wall (20) of the support (2) may comprise other facet type reflection means or hollow reflection elements and / or reliefs ensuring a homogeneous and diffuse reflection of the luminous flux (F).

Description

Domaine technique de l'invention.Technical Field of the Invention

L'invention a pour objet un dispositif d'éclairage pour piscine.The invention relates to a pool lighting device.

Elle concerne le domaine technique des équipements pour piscine et plus particulièrement celui des éclairages destinés à être immergés dans l'eau d'une piscine.It concerns the technical field of swimming pool equipment and more particularly that of lighting intended to be immersed in the water of a swimming pool.

État de la technique.State of the art

On connait par les documents US 6 595 671 (LEFEBVRE ) et US 6 315 424 (HUI ) des dispositifs d'éclairage aquatiques comprenant une ou plusieurs sources lumineuses fixées sur un support et protégées de l'eau par une optique ou un enrobage en résine transparente. Les sources lumineuses sont renfermées dans un espace réduit et, de fait, chauffent à des températures élevées. Cette surchauffe est susceptible de provoquer une dégradation rapide des sources lumineuses.We know from the documents US 6,595,671 (LEFEBVRE ) and US 6,315,424 (HUI ) water-based lighting devices comprising one or more light sources fixed on a support and protected from water by optics or a coating of transparent resin. The light sources are enclosed in a small space and, in fact, heat up at high temperatures. This overheating is likely to cause rapid degradation of the light sources.

Pour pallier ce problème de surchauffe, le document WO2005/108203 (SAVAGE ) enseigne d'utiliser une platine conductrice de chaleur sur laquelle sont montées des diodes électroluminescentes. La platine est agencée au fond du support de manière à être en contact avec un filet d'eau de la piscine. Ce filet d'eau permet de refroidir la platine ainsi que les diodes électroluminescentes qui sont montées dessus. Toutefois, la faible quantité d'eau qui stagne derrière le support ne permet pas de refroidir efficacement les diodes électroluminescentes et ces dernières finissent quand même par surchauffer et se dégrader.To overcome this problem of overheating, the document WO2005 / 108203 (SAVAGE ) teaches to use a heat conductive plate on which light-emitting diodes are mounted. The plate is arranged at the bottom of the support so as to be in contact with a trickle of water from the pool. This trickle of water allows to cool the plate as well as the electroluminescent diodes which are mounted on it. However, the small amount of water that stagnates behind the support does not effectively cool the light emitting diodes and they still end up overheating and degrade.

Face à cet état des choses, l'invention a pour principal objectif de fournir un dispositif amélioré d'éclairage pour piscine permettant un refroidissement efficace et rapide des diodes électroluminescentes de sorte que ces dernières ne se dégradent pas.In view of this state of affairs, the main purpose of the invention is to provide an improved swimming pool lighting device enabling efficient and rapid cooling of the light-emitting diodes so that the latter do not degrade.

Divulgation de l'invention.Disclosure of the invention.

La solution proposée par l'invention est un dispositif d'éclairage destiné à être immergé dans l'eau d'une piscine, comprenant :

  • un support sur lequel est fixée une optique, ledit support et ladite optique délimitant une chambre creuse dans laquelle sont disposées des diodes électroluminescentes,
  • une platine conductrice de chaleur comportant une face avant sur laquelle sont agencées les diodes électroluminescentes et une face arrière.
The solution proposed by the invention is a lighting device intended to be immersed in the water of a swimming pool, comprising:
  • a support on which an optic is fixed, said support and said optic defining a hollow chamber in which light-emitting diodes are arranged,
  • a heat conducting plate having a front face on which the light-emitting diodes are arranged and a rear face.

Ce dispositif comprend les caractéristiques techniques remarquables suivantes :

  • la platine est agencée sur l'optique de manière à ce que les diodes électroluminescentes soient situées dans la chambre creuse et que tout ou partie de sa face arrière soit située à l'extérieur de ladite chambre pour être en contact avec l'eau de la piscine,
  • les diodes électroluminescentes sont agencées sur la platine de manière à émettre un flux lumineux dans une direction opposée à celle de l'optique,
  • un moyen de réflexion est agencé dans la chambre creuse, en vis-à-vis des diodes électroluminescentes, de manière à rediffuser, en direction de l'optique, le flux lumineux émit par lesdites diodes.
This device includes the following outstanding technical features:
  • the plate is arranged on the optics so that the light-emitting diodes are located in the hollow chamber and all or part of its rear face is located outside said chamber to be in contact with the water of the swimming pool,
  • the light-emitting diodes are arranged on the plate so as to emit a luminous flux in a direction opposite to that of the optics,
  • a reflection means is arranged in the hollow chamber, vis-à-vis the light-emitting diodes, so as to rebroadcast, in the direction of the optical, the luminous flux emitted by said diodes.

En étant agencée directement sur l'optique, la platine est maintenant en contact direct avec un grand volume d'eau non stagnant, qui favorise les échanges thermiques, de sorte que ladite platine est refroidie suffisamment rapidement et efficacement pour que les diodes électroluminescentes ne surchauffent pas et ne se dégradent pas. Le moyen de réflexion agit comme un élément de rétro-éclairage, et permet de rediriger tout ou partie du flux lumineux généré par les diodes électroluminescentes vers l'extérieur de l'optique, et donc vers le bassin d'eau.By being arranged directly on the optics, the plate is now in direct contact with a large volume of non-stagnant water, which promotes heat exchange, so that said plate is cooled sufficiently quickly and efficiently so that the light-emitting diodes do not overheat. not and do not degrade. The reflection means acts as a backlight element, and allows to redirect all or part of the light flux generated by the light emitting diodes to the outside of the optics, and therefore to the water basin.

D'autres caractéristiques remarquables du dispositif objet de l'invention sont listées ci-dessous, chacune de ces caractéristiques pouvant être considérée seule ou en combinaison avec les caractéristiques remarquables définies ci-dessus :

  • l'optique comporte un orifice central à l'intérieur duquel est fixée de manière étanche la platine.
  • la platine est directement moulée dans l'optique.
  • les diodes électroluminescentes sont fixées sur un circuit imprimé lui-même fixé sur la face avant de la platine.
  • la face arrière de la platine peut être plate ou comporter des éléments en creux et/ou en relief, augmentant la surface d'échange thermique avec l'eau de la piscine.
  • le moyen de réflexion peut consister en une pièce comprenant un corps tronconique réfléchissant dont la base évasée est pourvue d'une coupole réfléchissante s'étendant dans la chambre creuse, la platine étant agencée au sommet dudit corps.
  • le corps tronconique réfléchissant comporte une partie intérieure creuse dans laquelle passe les câbles d'alimentation électrique des diodes électroluminescentes.
  • la face interne de la coupole réfléchissante qui est située du même côté que les diodes électroluminescentes est concave et comporte des sillons contigus et concentriques à l'axe de ladite coupole.
  • la coupole réfléchissante comporte des moyens de fixation au support.
  • le moyen de réflexion peut également consister en une coupole réfléchissante agencée en vis-à-vis des diodes électroluminescentes, ladite coupole s'étendant dans la chambre creuse.
  • la face interne de la coupole réfléchissante qui est située en vis-à-vis des diodes électroluminescentes est concave et comporte des sillons contigus et concentriques à l'axe de ladite coupole.
  • la coupole réfléchissante et l'optique forment une pièce monobloc obtenue par moulage, un revêtement réfléchissant étant appliqué contre la face interne de ladite coupole qui est située en vis-à-vis des diodes électroluminescentes.
  • le moyen de réflexion peut encore consister en un revêtement réfléchissant appliqué contre la paroi interne du support qui est située en vis-à-vis des diodes électroluminescentes.
Other remarkable characteristics of the device which is the subject of the invention are listed below, each of these characteristics being able to be considered alone or in combination with the remarkable characteristics defined above:
  • the optics comprises a central orifice inside which the plate is sealed.
  • the plate is directly molded in the optics.
  • the light-emitting diodes are fixed on a printed circuit itself fixed on the front face of the plate.
  • the rear face of the plate may be flat or include hollow elements and / or raised, increasing the heat exchange surface with the pool water.
  • the reflection means may consist of a part comprising a reflective frustoconical body whose flared base is provided with a reflecting cupola extending into the hollow chamber, the plate being arranged at the top of said body.
  • the frustoconical reflective body has a hollow inner portion in which passes the power supply cables of the light emitting diodes.
  • the inner face of the reflective dome which is located on the same side as the light-emitting diodes is concave and has furrows contiguous and concentric with the axis of said dome.
  • the reflective dome comprises fixing means to the support.
  • the reflection means may also consist of a reflective dome arranged vis-à-vis the light emitting diodes, said dome extending into the hollow chamber.
  • the inner face of the reflecting cupola which is located opposite the light-emitting diodes is concave and has furrows contiguous and concentric with the axis of said dome.
  • the reflective dome and the optics form a one-piece piece obtained by molding, a reflective coating being applied against the inner face of said dome which is located vis-à-vis the light emitting diodes.
  • the reflection means may also consist of a reflective coating applied against the inner wall of the support which is located vis-à-vis the light-emitting diodes.

Description des figures.Description of the figures.

D'autres avantages et caractéristiques de l'invention apparaîtront mieux à la lecture de la description d'un mode de réalisation préféré qui va suivre, en référence aux dessins annexés, réalisés à titre d'exemples indicatifs et non limitatifs et sur lesquels :

  • la figure 1 est une vue en coupe d'un mode préféré de réalisation du dispositif d'éclairage objet de l'invention,
  • la figure 2 est une vue en coupe du dispositif d'éclairage objet de l'invention dans une variante de réalisation,
  • la figure 3 est une vue en coupe du dispositif d'éclairage objet de l'invention dans une autre variante de réalisation,
  • la figure 4 est une vue agrandie du détail D de la figure 1, montrant un mode de réalisation préféré de la platine conductrice de chaleur,
  • la figure 5 est une vue agrandie du détail D de la figure 1, montrant la platine conductrice de chaleur dans une variante de réalisation,
  • la figure 6 est une vue agrandie du détail D de la figure 1, montrant la platine conductrice de chaleur dans une autre variante de réalisation.
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:
  • the figure 1 is a sectional view of a preferred embodiment of the lighting device according to the invention,
  • the figure 2 is a sectional view of the lighting device according to the invention in a variant embodiment,
  • the figure 3 is a sectional view of the lighting device according to the invention in another variant embodiment,
  • the figure 4 is an enlarged view of detail D of the figure 1 showing a preferred embodiment of the heat conducting plate,
  • the figure 5 is an enlarged view of detail D of the figure 1 , showing the heat conducting plate in an alternative embodiment,
  • the figure 6 is an enlarged view of detail D of the figure 1 , showing the heat conducting plate in another embodiment.

Modes de réalisation de l'invention.Embodiments of the invention

Le dispositif d'éclairage objet de l'invention est destiné à être immergé dans l'eau d'une piscine. En particulier, il est destiné à être fixé sur la paroi d'une piscine. Il peut être installé dans une niche spécifique réalisée dans une paroi de la piscine ou être inséré dans une prise balai ou une prise de refoulement. Au sens de la présente invention, le terme « piscine » doit être compris comme incluant non seulement les piscines traditionnelles hors-sol ou enterrées, mais également n'importe quels bassins, spas ou encore fontaines.The lighting device of the invention is intended to be immersed in the water of a swimming pool. In particular, it is intended to be fixed on the wall of a swimming pool. It can be installed in a specific niche made in a wall of the swimming pool or inserted into a brush socket or an outlet. For the purposes of the present invention, the term "pool" should be understood to include not only traditional pools above ground or buried, but also any pools, spas or fountains.

En se rapportant au mode préféré de réalisation de la figure 1, le dispositif d'éclairage (1) comprend un support (2) qui est une pièce monobloc rigide obtenue par moulage plastique, par exemple en ABS ou en polycarbonate. Le support (2) a préférentiellement une forme parabolique concave dont la partie avant est ouverte. Il comprend une paroi interne (20) et une paroi externe (21). La section du support (2) est préférentiellement circulaire, mais peut être de carrée, hexagonale ou de toute autre forme. Dans le cas d'une section circulaire, le plus grand diamètre varie de 100 mm à 400 mm, préférentiellement 220 mm. L'épaisseur du support (2) varie de 2 mm à 6 mm, préférentiellement 4 mm. La paroi interne (20) peut comporter des nervures de renforcement.Referring to the preferred embodiment of the figure 1 , the lighting device (1) comprises a support (2) which is a rigid one-piece piece obtained by plastic molding, for example ABS or polycarbonate. The support (2) preferably has a concave parabolic shape whose front portion is open. It comprises an inner wall (20) and an outer wall (21). The support section (2) is preferably circular, but may be square, hexagonal or any other shape. In the case of a circular section, the largest diameter varies from 100 mm to 400 mm, preferably 220 mm. The thickness of the support (2) varies from 2 mm to 6 mm, preferably 4 mm. The inner wall (20) may include reinforcing ribs.

La partie avant ouverte du support (2) est fermée par une optique (5). De cette manière, le support (2) et l'optique (5) délimitent une chambre creuse (9). L'arrière du support (2) est préférentiellement pourvu d'un élément tubulaire (4) débouchant de part et d'autre dudit support. La paroi externe de cet élément tubulaire (4) peut être filetée de manière à ce que le support (2) puisse se visser à l'intérieur d'une buse de refoulement ou d'une prise balai existante et déjà installée dans une paroi de la piscine. Selon un mode particulier de réalisation représenté sur la figure 1, l'élément tubulaire (4) délimite une seconde chambre (11) étanche dans laquelle est réalisée la connexion entre un câble d'alimentation électrique (10) et les diodes électroluminescentes (8). La première chambre (9) et la seconde chambre (11) sont adjacentes, séparées par une cloison (22) étanche obtenue lors du moulage du support (2). La seconde chambre (11) est accessible directement depuis l'arrière du support (2). La cloison (22) intègre de façon étanche des éléments (23) permettant de connecter le câble d'alimentation électrique (10) aux diodes électroluminescentes (8). Ces éléments (23) de connexion sont typiquement des connectiques métalliques directement moulées dans la cloison (22) ou rapportés, et qui débouchent dans chacune des deux chambres (9, 11). Dans la première chambre (9), les éléments de connexion comportent des extrémités sur lesquelles se fixent, par exemple par vissage, des cosses reliées électriquement aux diodes électroluminescentes (8) par l'intermédiaire d'un ou plusieurs câbles électriques (24). Dans la seconde chambre (11), les éléments (23) de connexion comportent des extrémités sur lesquelles se fixent, par exemple par vissage, des cosses reliées électriquement au câble d'alimentation électrique (10). La paroi interne de la seconde chambre (11) est taraudée de manière à recevoir un fourreau (26) démontable qui l'obture de manière étanche. Le fourreau (26) intègre un joint (28) étanche enserrant le câble d'alimentation électrique (10). Ce joint (28) assure l'étanchéité du passage du câble d'alimentation électrique (10) dans le fourreau (26). En pratique, le joint (28) est une pièce déformable, typiquement en caoutchouc, de forme conique et à l'intérieur de laquelle passe le câble d'alimentation électrique (10). L'extrémité supérieure du fourreau (26) présente un logement interne, également de forme conique mais légèrement plus petit que le joint (28). On prévoit un organe de serrage (29) qui déforme le joint (28) de manière à étanchéifier le passage du câble d'alimentation électrique (10) dans le fourreau (26). L'organe de serrage (29) est préférentiellement un écrou vissé à l'extrémité supérieure du fourreau (26). Lors du vissage, cet écrou écrase le joint (28) dans son logement, et en se déformant ledit joint assure l'étanchéité entre le câble d'alimentation électrique (10) et le fourreau (26).The open front part of the support (2) is closed by an optic (5). In this way, the support (2) and the optics (5) delimit a hollow chamber (9). The rear of the support (2) is preferably provided with a tubular element (4) opening on either side of said support. The outer wall of this tubular element (4) can be threaded so that the support (2) can be screwed inside an existing discharge nozzle or brush socket and already installed in a wall of the pool. According to a particular embodiment represented on the figure 1 , the tubular element (4) delimits a second sealed chamber (11) in which the connection between a power supply cable (10) and the light-emitting diodes (8) is made. The first chamber (9) and the second chamber (11) are adjacent, separated by a partition (22) sealed during molding of the support (2). The second chamber (11) is accessible directly from the rear of the support (2). The partition (22) sealingly integrates elements (23) for connecting the power supply cable (10) to the light-emitting diodes (8). These connection elements (23) are typically metal connectors directly molded into the partition (22) or reported, and which open into each of the two chambers (9, 11). In the first chamber (9), the connection elements comprise ends on which are fixed, for example by screwing, lugs electrically connected to the light emitting diodes (8) via one or more electrical cables (24). In the second chamber (11), the connecting elements (23) comprise ends on which are fixed, for example by screwing, lugs electrically connected to the power supply cable (10). The inner wall of the second chamber (11) is threaded so as to receive a removable sleeve (26) which seals it tightly. The sheath (26) incorporates a tight seal (28) enclosing the power supply cable (10). This seal (28) seals the passage of the power supply cable (10) in the sleeve (26). In practice, the seal (28) is a deformable piece, typically made of rubber, of conical shape and inside which passes the power supply cable (10). The upper end of the sleeve (26) has an inner housing, also of conical shape but slightly smaller than the seal (28). There is provided a clamping member (29) which deforms the seal (28) to seal the passage of the power supply cable (10) in the sleeve (26). The clamping member (29) is preferably a nut screwed to the upper end of the sleeve (26). When screwing, this nut crushes the seal (28) in its housing, and deforming said seal seals between the power supply cable (10) and the sleeve (26).

L'optique (5) est réalisée en verre ou en matière plastique translucide ou transparente. Elle a une forme parabolique convexe et peut intégrer des facettes permettant la diffusion homogène de la lumière et le mélange des couleurs dans l'eau. L'optique (5) a une section qui correspond à celle du support (2). Elle est fixée de manière étanche au niveau de la partie avant ouverte du support (2). Cette fixation est réalisée par vissage combiné à un ou plusieurs joints, par soudage ultrason, par collage, ou toute autre technique convenant à l'homme du métier.The optic (5) is made of glass or translucent or transparent plastic material. It has a convex parabolic shape and can incorporate facets allowing the homogeneous diffusion of the light and the mixture of the colors in the water. The optic (5) has a section that corresponds to that of the support (2). It is sealed in the open front part of the support (2). This fixation is achieved by screwing combined with one or more joints, by ultrasonic welding, by bonding, or any other technique suitable for the skilled person.

Les diodes électroluminescentes (8) sont agencées sur la face avant (130) d'au moins une platine (13) conductrice de chaleur. Sur les figures annexées, une seule platine (13) est représentée, mais le dispositif objet de l'invention peut en comporter plusieurs. La platine (13) peut avoir une forme circulaire, carrée, hexagonale, ou autre et être composée d'une ou plusieurs pièces. Elle est réalisée en métal, en céramique ou en tout autre matériau conducteur de chaleur convenant à l'homme du métier. Sa face arrière (131) peut être revêtue d'une couche de matériau anticorrosion du type couche de peinture, couche de matière plastique, ou autre, ou encore subir un traitement de surface du type nitruration, chromatation, projection plasma, ou autre. En pratique, la platine (13) consiste en une pièce cylindrique plate, ayant un diamètre pouvant par exemple varier de 10 mm à 100 mm et une épaisseur pouvant par exemple aller de 1 mm à 10 mm. Les diodes électroluminescentes (8) sont préférentiellement préalablement fixées, typiquement par soudage, sur un circuit imprimé (14) lui-même fixé sur la face avant (130) de la platine (13). Le circuit imprimé (14) et la platine (13) peuvent êtres fixés l'un contre l'autre par soudure, collage, vissage, rivetage, ou autre. Les diodes électroluminescentes (8) peuvent toutefois être directement fixées sur la face avant (130) de la platine (13). Dans tous les cas, la chaleur émise par les diodes électroluminescentes (8) est évacuée par la platine (13).The light-emitting diodes (8) are arranged on the front face (130) of at least one heat conducting plate (13). In the accompanying figures, only one plate (13) is shown, but the device of the invention may comprise several. The plate (13) can have a circular, square, hexagonal or other shape and be composed of one or more pieces. It is made of metal, ceramic or any other heat conducting material suitable for the skilled person. Its rear face (131) may be coated with a layer of corrosion-resistant material such as paint layer, plastic layer, or the like, or else undergo a surface treatment such nitriding, chromating, plasma spraying, or other. In practice, the plate (13) consists of a flat cylindrical piece, having a diameter that may for example vary from 10 mm to 100 mm and a thickness that may for example range from 1 mm to 10 mm. The light emitting diodes (8) are preferably previously fixed, typically by welding, on a printed circuit (14) itself fixed on the front face (130) of the plate (13). The printed circuit (14) and the plate (13) can be fixed against each other by welding, gluing, screwing, riveting, or other. The light-emitting diodes (8) can, however, be directly attached to the front face (130) of the plate (13). In any case, the heat emitted by the light-emitting diodes (8) is discharged by the plate (13).

Les diodes électroluminescentes (8) (ou LED) peuvent être monochromes ou polychromes. Grâce à l'invention, il est possible d'utiliser des diodes dites de puissance qui génèrent un flux lumineux très supérieur aux diodes électroluminescentes classiques. Ces diodes de puissance ont généralement une puissance électrique supérieure ou égale à 0,1 Watt, certaines pouvant atteindre plusieurs dizaines de Watts. L'éclairage des diodes électroluminescentes (8) est préférentiellement commandé par l'intermédiaire d'une unité de gestion électronique fixée sur le circuit imprimé (14). Cette unité de gestion, qui se présente sous la forme d'un processeur ou d'un microprocesseur, peut être activée par télécommande ou directement programmée. L'utilisateur a ainsi la possibilité de générer selon son envie ou de manière programmée, de nombreux effets lumineux éventuellement combinés à des jeux de couleurs. Classiquement, les diodes électroluminescentes (8) fonctionnent sous 12 V. Selon la source de courant disponible, il est donc nécessaire de prévoir un transformateur permettant de transformer le 100 V ou le 220 V en 12 V. Pour des raisons de sécurité, ce transformateur est disposé en dehors du dispositif objet de l'invention et à l'extérieur du bassin d'eau. Bien qu'une batterie ou des piles électriques puissent être employées, les diodes électroluminescentes (8) et en particulier l'unité de gestion, sont préférentiellement alimentées par l'intermédiaire du câble d'alimentation électrique (10). L'extrémité de ce câble est connectée à une source de courant, typiquement le secteur. Lorsqu'un transformateur est utilisé, ce dernier peut être soit directement intégré dans le câble d'alimentation électrique (10), soit être rapporté. Dans ce dernier cas, le câble d'alimentation électrique (10) se branche sur le transformateur et c'est ce dernier qui est relié au secteur.Light-emitting diodes (8) (or LEDs) can be monochrome or polychromatic. Thanks to the invention, it is possible to use so-called power diodes that generate a luminous flux much higher than conventional light emitting diodes. These power diodes generally have an electrical power greater than or equal to 0.1 Watt, some up to several tens of Watts. The illumination of the light-emitting diodes (8) is preferably controlled via an electronic management unit fixed on the printed circuit (14). This management unit, which is in the form of a processor or a microprocessor, can be activated by remote control or directly programmed. The user has the possibility to generate according to his desire or programmed, many light effects possibly combined with color schemes. Conventionally, the light-emitting diodes (8) operate at 12 V. Depending on the available power source, it is therefore necessary to provide a transformer for transforming the 100 V or the 220 V into 12 V. For safety reasons, this transformer is disposed outside the device object of the invention and outside the water basin. Although a battery or electric batteries can be used, the light-emitting diodes (8) and in particular the management unit are preferably fed via the power supply cable (10). The end of this cable is connected to a power source, typically the mains. When a transformer is used, the transformer can either be integrated directly into the power supply cable (10) or be attached. In the latter case, the power supply cable (10) connects to the transformer and it is the latter which is connected to the mains.

Conformément à l'invention, la platine (13) est agencée directement sur l'optique (5) de manière à ce que les diodes électroluminescentes (8) soient situées dans la chambre creuse (9) et que tout ou partie de sa face arrière (131) soit située à l'extérieur de ladite chambre pour être directement en contact avec l'eau de la piscine. La platine (13) et les diodes (8) peuvent ainsi être efficacement refroidies.According to the invention, the plate (13) is arranged directly on the optics (5) so that the light-emitting diodes (8) are located in the hollow chamber (9) and that all or part of its rear face (131) is located outside of said chamber to be directly in contact with the pool water. The plate (13) and the diodes (8) can thus be effectively cooled.

L'optique (5) comporte un orifice qui est préférentiellement, mais pas nécessairement, positionné au centre de ladite optique. Un orifice central permet d'obtenir un éclairage symétrique et homogène à l'intérieur de l'optique. Cet orifice sert de logement à la platine (13). En se rapportant aux figures 4 et 5, l'orifice peut comporter un épaulement (50) assurant le positionnement de la platine (13). Le maintien en position est obtenu par soudure, collage ou vissage. Un joint (51) assure l'étanchéité de la liaison entre la platine (13) et l'optique (5). Dans le cas où l'optique (5) intègre plusieurs platines (13), plusieurs orifices similaires sont prévus. Dans la variante de réalisation de la figure 6, la platine (13) est directement moulée dans l'optique (5) de sorte qu'il n'est pas nécessaire de prévoir un joint d'étanchéité.The optic (5) has an orifice which is preferentially, but not necessarily, positioned in the center of said optic. A central hole provides a symmetrical and homogeneous illumination inside the optics. This orifice serves as a housing for the plate (13). By referring to Figures 4 and 5 , the orifice may comprise a shoulder (50) ensuring the positioning of the plate (13). The holding in position is obtained by welding, gluing or screwing. A seal (51) seals the connection between the plate (13) and the optic (5). In the case where the optical (5) integrates several plates (13), several similar orifices are provided. In the variant embodiment of the figure 6 , the plate (13) is directly molded in the optics (5) so that it is not necessary to provide a seal.

La face arrière (131) de la platine (13) peut être plate (figure 4) ou comporter des éléments (135) en creux et/ou en relief (figure 5). Dans ce dernier cas, la surface d'échange thermique avec l'eau de la piscine est augmentée et le refroidissement des diodes électroluminescentes (8) plus efficace. Dans les exemples de réalisation des figures 4 et 5 où la platine (13) est rapportée dans l'otique (5), la totalité de la face arrière (131) de la platine (13) est en contact avec l'eau de la piscine. Dans l'exemple de réalisation de la figure 6 où la platine (13) est directement moulée dans l'otique (5), seule une partie de la face arrière (131) peut être en contact avec l'eau de la piscine.The rear face (131) of the plate (13) can be flat ( figure 4 ) or have recessed and / or raised elements (135) ( figure 5 ). In the latter case, the heat exchange surface with the pool water is increased and the cooling of the light-emitting diodes (8) more efficient. In the exemplary embodiments of Figures 4 and 5 where the plate (13) is reported in the otic (5), the entire rear face (131) of the plate (13) is in contact with the pool water. In the exemplary embodiment of the figure 6 where the plate (13) is directly molded in the otic (5), only a portion of the rear face (131) may be in contact with the pool water.

Sur les figures annexées, les diodes électroluminescentes (8) sont disposées perpendiculairement à la face avant (130) de la platine (1). Dans cette configuration, l'ensemble du flux lumineux (F) émis par les diodes (8) est orienté vers l'arrière du support (2), c'est-à-dire dans une direction opposée à celle de l'optique (5). Les diodes électroluminescentes (8) peuvent également être disposées parallèlement à la face avant (130) de la platine (1) ou en oblique. Dans ce cas, une partie seulement du flux lumineux (F) est orienté vers l'arrière du support (2). Dans le but de rediffuser le flux lumineux (F) en direction de l'optique (5), et donc dans le bassin d'eau, un moyen de réflexion est agencé dans la chambre creuse (9), en vis-à-vis des diodes électroluminescentes (8).In the accompanying figures, the light-emitting diodes (8) are arranged perpendicularly to the front face (130) of the plate (1). In this configuration, the entire luminous flux (F) emitted by the diodes (8) is oriented towards the rear of the support (2), that is to say in a direction opposite to that of the optics ( 5). The light-emitting diodes (8) can also be arranged parallel to the front face (130) of the plate (1) or obliquely. In this case, only a part of the luminous flux (F) is directed towards the rear of the support (2). In order to rebroadcast the luminous flux (F) towards the optics (5), and thus into the water basin, a reflection means is arranged in the hollow chamber (9), facing each other electroluminescent diodes (8).

En se rapportant à la figure 1, ce moyen de réflexion consiste préférentiellement en une pièce (18) comprenant un corps tronconique réfléchissant (180), dont la base évasée est pourvue d'une coupole réfléchissante (181) s'étendant dans la chambre creuse (9). La platine (13) est agencée au sommet du corps tronconique (180), et plus particulièrement au niveau de son extrémité la plus étroite. En se rapportant aux figures 4 et 5, cette extrémité est avantageusement pourvue d'un pion de centrage (184) apte à s'insérer dans un logement complémentaire prévu dans le circuit imprimé (14) et/ou dans la platine (13).By referring to the figure 1 this means of reflection preferably consists of a part (18) comprising a reflective frustoconical body (180) whose flared base is provided with a reflecting cupola (181) extending into the hollow chamber (9). The plate (13) is arranged at the top of the frustoconical body (180), and more particularly at its narrow end. By referring to Figures 4 and 5 , this end is advantageously provided with a centering pin (184) adapted to be inserted into a complementary housing provided in the printed circuit (14) and / or in the plate (13).

La pièce (18) est fixée sur le support (2) par vissage, collage, soudure, ou autre. En pratique, la coupole réfléchissante (181) comporte des moyens de fixation (183). Il s'agit par exemple d'ergots s'insérant dans des logements complémentaires prévus sur la paroi interne du support (2).The piece (18) is fixed on the support (2) by screwing, gluing, welding, or other. In practice, the reflective dome (181) comprises fixing means (183). This is for example pins lodged in complementary housing provided on the inner wall of the support (2).

La courbure parabolique du corps tronconique (180) est telle qu'elle rediffuse tout ou partie du flux lumineux (F) vers l'optique (5) et donc vers le bassin d'eau. Le corps tronconique (180) peut être réalisé en métal, en matière composite ou autre, sa face externe étant recouverte d'une couche d'un matériau réfléchissant du type chrome, aluminium, argent, etc. Il peut toutefois être directement réalisé dans un matériau réfléchissant du type aluminium, argent, ou autre. En pratique, la hauteur du corps tronconique (180) varie de 10 mm à 100 mm. Il comporte une partie intérieure creuse (184) dans laquelle passe les câbles d'alimentation électrique (24).The parabolic curvature of the frustoconical body (180) is such as to redistribute all or part of the luminous flux (F) towards the optics (5) and thus towards the water basin. The frustoconical body (180) can be made of metal, composite material or other, its outer face being covered with a layer of a reflective material of the type chrome, aluminum, silver, etc.. It can, however, be made directly in a reflective material of the aluminum, silver, or other type. In practice, the height of the frustoconical body (180) varies from 10 mm to 100 mm. It has a hollow inner portion (184) through which the power supply cables (24) pass.

La coupole réfléchissante (181) est réalisée dans le même matériau que le corps tronconique (180). Elle peut être rapportée à la base de ce dernier ou formée une pièce monobloc avec ledit corps. En pratique, le diamètre de la coupole (181) est tel que sa bordure externe est sensiblement en contact avec la paroi interne du support (2) et/ou avec la paroi interne de l'optique (5). Elle a un diamètre extérieur pouvant varier de 100 mm à 400 mm, préférentiellement environ 220 mm. La coupole (181) peut avoir une forme conique de profil droit ou courbe, une forme hyperbolique, ou tout autre profil convenant à l'homme du métier. Pour obtenir une réflexion optimale du flux lumineux (F), la face interne de la coupole (181) qui est située du même côté que les diodes électroluminescentes (8) est avantageusement concave et comporte des sillons (182) contigus et concentriques à l'axe (A) de ladite coupole. Sur les figures annexées, cet axe (A) est coaxial à l'axe du corps tronconique (180) et à celui de l'optique (5). Les sillons (182) assurent une rediffusion homogène du flux lumineux (F) vers l'optique (5) et donc vers le bassin, avec un grand angle de réflexion. En pratique, les sillons (182) sont de section circulaire, leur rayon variant de 1 mm à 20 mm. Leur nombre varie par exemple de 3 à 50 en fonction de leur rayon et du diamètre de la coupole (181). La face interne de la coupole (181) peut comporter d'autres moyens de réflexion du type facettes ou des éléments de réflexion en creux et/ou en reliefs assurant une réflexion homogène et diffuse du flux lumineux (F).The reflective dome (181) is made of the same material as the frustoconical body (180). It can be attached to the base of the latter or formed a one-piece piece with said body. In practice, the diameter of the dome (181) is such that its outer rim is substantially in contact with the inner wall of the support (2) and / or with the inner wall of the optic (5). It has an outer diameter ranging from 100 mm to 400 mm, preferably about 220 mm. The dome (181) may have a conical shape of straight or curved profile, a hyperbolic shape, or any other profile suitable for the skilled person. To obtain optimum reflection of the luminous flux (F), the inner face of the dome (181) which is situated on the same side as the light-emitting diodes (8) is advantageously concave and comprises grooves (182) contiguous and concentric with the axis (A) of said dome. In the accompanying figures, this axis (A) is coaxial with the axis of the frustoconical body (180) and that of the optics (5). The grooves (182) provide a homogeneous reflow of the luminous flux (F) to the optics (5) and thus to the pelvis, with a large angle of reflection. In practice, the grooves (182) are of circular section, their radius varying from 1 mm to 20 mm. Their number varies for example from 3 to 50 depending on their radius and the diameter of the dome (181). The inner face of the dome (181) may comprise other facet type reflection means or hollow reflection elements and / or reliefs ensuring a homogeneous and diffuse reflection of the luminous flux (F).

Dans une variante de réalisation représentée sur la figure 2, le moyen de réflexion consiste en une coupole réfléchissante (18') agencée en vis-à-vis des diodes électroluminescentes (8). En pratique, le diamètre de la coupole (18') correspond à celui de l'optique (5) de sorte qu'elle s'étend dans toute la chambre (9). La coupole (18') peut avoir une forme conique de profil droit ou courbe, une forme hyperbolique, ou tout autre profil convenant à l'homme du métier. Pour obtenir une réflexion optimale du flux lumineux (F), la face interne de la coupole (18') qui est située en vis-à-vis des diodes électroluminescentes (8) est avantageusement concave et comporte des sillons (182') contigus et concentriques à l'axe (A) de ladite coupole. Les sillons (182') sont similaires à ceux décrit précédemment en référence à la figure 1 et sont agencés de la même façon. La face interne de la coupole (18') peut comporter d'autres moyens de réflexion du type facettes ou des éléments de réflexion en creux et/ou en reliefs assurant une réflexion homogène et diffuse du flux lumineux (F). Un ou plusieurs orifices (184'), préférentiellement agencés au centre de ladite coupole réfléchissante, assurent le passage des câbles d'alimentation électrique (24) des diodes électroluminescentes (8).In an alternative embodiment shown on the figure 2 , the reflection means consists of a reflective dome (18 ') arranged vis-à-vis the light-emitting diodes (8). In practice, the diameter of the dome (18 ') corresponds to that of the optic (5) so that it extends throughout the chamber (9). The cupola (18 ') may have a conical shape of straight or curved profile, a hyperbolic shape, or any other profile suitable for those skilled in the art. In order to obtain optimal reflection of the luminous flux (F), the inner face of the cupola (18 ') which is located opposite the light-emitting diodes (8) is advantageously concave and comprises furrows (182') contiguous and concentric to the axis (A) of said dome. The grooves (182 ') are similar to those described above with reference to the figure 1 and are arranged in the same way. The inner face of the dome (18 ') may comprise other facet type reflection means or hollow reflection elements and / or reliefs ensuring a homogeneous and diffuse reflection of the luminous flux (F). One or more orifices (184 '), preferably arranged in the center of said reflecting cupola, ensure the passage of the power supply cables (24) of the light-emitting diodes (8).

La coupole (18') peut être rapportée sur le support (2) ou formée une pièce monobloc avec l'optique (5) et être obtenue lors du moulage de ladite optique. Dans ce dernier cas, un revêtement réfléchissant (185') est appliqué contre la face interne de ladite coupole qui est située en vis-à-vis des diodes électroluminescentes (8). Ce revêtement (185') est typiquement à base de chrome, d'aluminium, d'argent ou de tout autre matériau réfléchissant. Il peut se présenter sous la forme d'une peinture, d'une feuille souple, ou de toute autre forme convenant à l'homme du métier.The dome (18 ') can be attached to the support (2) or formed a one-piece piece with the optics (5) and be obtained during molding of said optics. In the latter case, a reflective coating (185 ') is applied against the inner face of said cupola which is located vis-à-vis the light-emitting diodes (8). This coating (185 ') is typically based on chromium, aluminum, silver or any other reflective material. It may be in the form of a paint, a flexible sheet, or any other form suitable to those skilled in the art.

Dans une autre variante de réalisation représentée sur la figure 3, le moyen de réflexion consiste en un revêtement réfléchissant (18") appliqué directement contre la paroi interne (20) du support (2) qui est située en vis-à-vis des diodes électroluminescentes (8). Ce revêtement (18") est typiquement à base de chrome, d'aluminium, d'argent ou de tout autre matériau réfléchissant. Il peut se présenter sous la forme d'une peinture, d'une feuille souple, ou de toute autre forme convenant à l'homme du métier. La paroi interne (20) du support (2) peut comporter d'autres moyens de réflexion du type facettes ou des éléments de réflexion en creux et/ou en reliefs assurant une réflexion homogène et diffuse du flux lumineux (F).In another variant embodiment shown on the figure 3 , the reflection means consists of a reflective coating (18 ") applied directly against the inner wall (20) of the support (2) which is located opposite the light-emitting diodes (8). is typically based on chromium, aluminum, silver or any other reflective material. It may be in the form of a paint, a flexible sheet, or any other form suitable to those skilled in the art. The inner wall (20) of the support (2) may comprise other facet type reflection means or hollow reflection elements and / or reliefs ensuring a homogeneous and diffuse reflection of the luminous flux (F).

Art antérieur connus.Prior art known.

FR 2.935.459 (POMA et al ) ; US 2005/185417 (MAYER ) ; US 2005/168994 (JACOBSON ) ; EP 2.339.232 (SIELD ) ; US 2009/154164 (HSU ) ; DE 10.2005.040185 (SCHMALENBERGER ); FR 2.863.345 (INTERNAT POOL SAFETY AND LIGHT). FR 2,935,459 (POMA et al ); US 2005/185417 (MAYER ); US 2005/168994 (JACOBSON ); EP 2.339.232 (SIELD ); US 2009/154164 (HSU ); DE 10.2005.040185 (SCHMALENBERGER ); FR 2,863,345 (INTERNAT POOL SAFETY AND LIGHT).

Claims (14)

  1. Lighting device able to be immersed in the water of a swimming pool, comprising:
    - a support (2) on which a lens (5) is fastened, said support and said lens delimiting a hollow chamber (9) in which light-emitting diodes (8) are arranged,
    - a heat-conducting plate (13) including a front face (130) on which the light-emitting diodes (8) are laid out and a back face (131),
    characterized in that:
    - the plate (13) is arranged on the lens (5) so that the light-emitting diodes (8) are situated in the hollow chamber (9) and all or part of its back face (131) is situated on the outside of said chamber so as to be in contact with the water of the swimming pool,
    - the light-emitting diodes (8) are laid out on the plate (13) so as to emit a luminous flux (F) in a direction opposite to that of the lens (5),
    - a reflecting means (18,18',18") is laid out in the hollow chamber (9), facing the light-emitting diodes (8), so as to rediffuse, in the direction of the lens (5), the luminous flux (F) emitted by said diodes.
  2. Device according to Claim 1, in which the lens (5) includes a central orifice inside which the plate (13) is fastened in a watertight manner.
  3. Device according to Claim 1, in which the plate (13) is moulded directly in the lens (5).
  4. Device according to one of the preceding claims, in which the light-emitting diodes (8) are fastened onto a printed circuit (14), itself fastened onto the front face (130) of the plate (13).
  5. Device according to one of the preceding claims, in which the back face (131) of the plate (13) is flat.
  6. Device according to one of Claims 1 to 4, in which the back face (131) of the plate (13) includes hollowed-out or embossed elements (135), increasing the heat exchange surface with the water of the swimming pool.
  7. Device according to one of Claims 1 to 6, in which the reflecting means consists in a part (18) comprising a reflective frustoconical body (180), the flared support of which is provided with a reflective dome (181) extending into the hollow chamber (9), the plate (13) being arranged at the summit of said body.
  8. Device according to Claim 7, in which the reflective frustoconical body (180) includes a hollow interior part (184) through which the power supply cables (24) of the light-emitting diodes (8) are run.
  9. Device according to one of Claims 7 to 8, in which the internal face of the reflective dome (181) that is situated on the same side as the light-emitting diodes (8) is concave and includes grooves (182) that are contiguous and concentric with the axis (A) of said dome.
  10. Device according to one of Claims 7 to 9, in which the reflective dome (181) includes means (183) for fastening to the support (2).
  11. Device according to one of Claims 1 to 6, in which the reflecting means consists in a reflective dome (18') laid out facing the light-emitting diodes (8), said dome extending into the hollow chamber (9).
  12. Device according to Claim 11, in which the internal face of the reflective dome (18') that is situated facing the light-emitting diodes (8) is concave and includes grooves (182') that are contiguous and concentric with the axis (A) of said dome.
  13. Device according to one of Claims 11 or 12, in which the reflective dome (18') and the lens (5) form a monobloc part obtained by moulding, a reflective coating (185') being applied to the internal face of said dome that is situated facing the light-emitting diodes (8).
  14. Device according to one of Claims 1 to 6, in which the reflecting means consists in a reflective coating (18") applied to the internal wall (20) of the support(2) that is situated facing the light-emitting diodes (8).
EP12192712.3A 2011-11-17 2012-11-15 Lighting device for a swimming pool. Active EP2594245B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1160481A FR2968333B1 (en) 2011-11-17 2011-11-17 LIGHTING DEVICE FOR SWIMMING POOL.

Publications (2)

Publication Number Publication Date
EP2594245A1 EP2594245A1 (en) 2013-05-22
EP2594245B1 true EP2594245B1 (en) 2015-03-11

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ID=45440596

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Application Number Title Priority Date Filing Date
EP12192712.3A Active EP2594245B1 (en) 2011-11-17 2012-11-15 Lighting device for a swimming pool.

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EP (1) EP2594245B1 (en)
FR (1) FR2968333B1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011077668B4 (en) * 2011-06-16 2018-03-08 Trilux Gmbh & Co. Kg Lamp with thermal coupling element made of thermally conductive plastic
CN103453358A (en) * 2013-07-15 2013-12-18 深圳市巧精灵照明有限公司 Light-emitting-diode down lamp
AU2015273030B2 (en) * 2014-06-12 2020-06-18 Integrated Pool Products (Pty) Ltd An underwater light fitting
FR3024210B1 (en) 2014-07-24 2019-05-31 Sieled LIGHTING DEVICE IN AQUATIC ENVIRONMENT
FR3025294B1 (en) * 2014-09-01 2019-06-14 Energies Alternatives & Solaires Solutions LIGHTING DEVICE INCORPORATING ENHANCED SEALING
US20170175992A1 (en) 2015-12-16 2017-06-22 Sieled Underwater lighting device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6315424B1 (en) 2000-01-24 2001-11-13 Smartpool Incorporated Underwater safety lighting device for swimming pools
US6595671B2 (en) 2000-05-10 2003-07-22 Maxime Lefebvre Rugged, waterproof LED array lighting system
FR2863345B1 (en) * 2003-12-04 2006-09-29 Internat Pool Safety And Light SUBAQUATIC LIGHT PROJECTOR
US7246921B2 (en) * 2004-02-03 2007-07-24 Illumitech, Inc. Back-reflecting LED light source
US7131760B2 (en) * 2004-02-20 2006-11-07 Gelcore Llc LED luminaire with thermally conductive support
GB2413840B (en) 2004-05-07 2006-06-14 Savage Marine Ltd Underwater lighting
DE102005040185B4 (en) * 2005-08-25 2010-04-01 Schmalenberger Gmbh & Co. Kg Underwater light
CN101463989B (en) * 2007-12-18 2011-07-06 富士迈半导体精密工业（上海）有限公司 Underwater illumination device
FR2935459B1 (en) * 2008-08-28 2011-04-08 Philippe Poma LIGHTING DEVICE FOR SWIMMING POOL WITH ATTACHMENT TO A BRUSH SOCKET
FR2954809B1 (en) * 2009-12-24 2012-11-02 Siebec LAMP FOR PROJECTOR AND PROJECTOR PROVIDED WITH SUCH A LAMP

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Publication number Publication date
EP2594245A1 (en) 2013-05-22
FR2968333B1 (en) 2013-05-10
FR2968333A1 (en) 2012-06-08

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