EP2687775B1 - Lighting device with LED lamp intended to be fixed on a wall - Google Patents

Lighting device with LED lamp intended to be fixed on a wall Download PDF

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Publication number
EP2687775B1
EP2687775B1 EP13170996.6A EP13170996A EP2687775B1 EP 2687775 B1 EP2687775 B1 EP 2687775B1 EP 13170996 A EP13170996 A EP 13170996A EP 2687775 B1 EP2687775 B1 EP 2687775B1
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EP
European Patent Office
Prior art keywords
wall
base plate
lighting device
lighting
light source
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
EP13170996.6A
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German (de)
French (fr)
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EP2687775A1 (en
Inventor
Sylvain Palombo
François Drouin
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.)
Lebenoid SAS
Original Assignee
Lebenoid SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Lebenoid SAS filed Critical Lebenoid SAS
Publication of EP2687775A1 publication Critical patent/EP2687775A1/en
Application granted granted Critical
Publication of EP2687775B1 publication Critical patent/EP2687775B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/03—Lighting devices intended for fixed installation of surface-mounted type
    • F21S8/033—Lighting devices intended for fixed installation of surface-mounted type the surface being a wall or like vertical structure, e.g. building facade
    • 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
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/02—Wall, ceiling, or floor bases; Fixing pendants or arms to the bases
    • 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 present invention relates to a lighting device for attachment to a wall.
  • the device concerned comprises an LED light source.
  • the lighting device of the kind also comprises a base and a translucent closure envelope.
  • the base in particular made of thermoplastic material or metal is fixed on the wall.
  • the lighting assembly is secured to the base and located on the opposite side to the wall. Fixing the light source on the base is carried by a support.
  • the translucent envelope includes the lighting assembly and is also attached to the base.
  • the lighting assembly generates heat.
  • the removal of heat is a crucial issue for the proper functioning of the lighting assembly. Indeed, a high temperature decreases the energy efficiency of the lighting assembly.
  • the life of the LED lamp is also reduced when the lighting assembly is subjected to a high temperature.
  • the base may be made of a metallic material having a heat transfer function.
  • the present invention aims to solve all or some of the disadvantages mentioned above.
  • the heat removal is direct.
  • No intermediate support performs an isolation function.
  • means for fixing the device to the wall are arranged to define a space between the rear surface and the wall, the space being intended for the circulation of an outside air flow.
  • the heat of the device is discharged through the flow of outside air flowing in the space between the wall and the lighting assembly.
  • the means for fixing the device to the wall are arranged so that the printed circuit is in contact with the wall.
  • the heat from the lighting assembly is discharged into the wall by conduction.
  • the light source comprises at least one LED lamp.
  • the efficiency of the LED depends on its operating temperature. The more the LED heats up, the more its energy efficiency, in other words the light output compared to the energy consumption, decreases. The life of the LED is reduced by prolonged operation at high temperature.
  • the removal of heat by the air flow or by contact with the wall is a prerequisite for extending the life of the LED and improving the energy efficiency of the lighting assembly.
  • the lighting device comprises a translucent envelope encompassing the lighting assembly, the translucent envelope being secured to the base plate.
  • the translucent envelope comprises a shoulder for attachment to the base plate.
  • the fastening means of the device on the wall are included in the translucent envelope.
  • the base plate comprises on a peripheral edge a passage zone for the device of the fixing means on the wall.
  • the lighting device comprises a centering system of the translucent envelope relative to the base plate, so as to arrange the translucent envelope and the baseplate for the implementation. place fixing means of the device on the wall.
  • the printed circuit substrate is made at least partially of aluminum covered with a layer of insulator, epoxy resin, glass fabric impregnated with epoxy resin, or any other material that can be used as a substrate printed circuit board.
  • a lighting device 1 is fixed on a wall 3 by fixing means 5.
  • the lighting device 1 comprises a base plate 7 and a lighting assembly 9.
  • the base plate 7 and the lighting assembly 9 are integral.
  • the base plate 7 comprises on a peripheral edge a passage zone 10 for the fixing means 5.
  • a translucent envelope 11 translucent includes the lighting assembly 9 and is integral with the base plate 7.
  • the means of 5 are included in the translucent casing 11.
  • the translucent casing 11 has an attachment shoulder 12 of the base plate 7 at the periphery.
  • the base plate 7 comprises a centering system 13 for positioning the translucent envelope on the base plate.
  • the lighting assembly 9 comprises a control arrangement 14 provided with a printed circuit 15.
  • the lighting assembly 9 also comprises a light source 17.
  • the light source comprises an LED lamp.
  • a device for protecting, regulating and / or limiting the current from a source of electrical energy secures the control arrangement 14 and the light source 17.
  • a substrate 18 of the printed circuit 15 constitutes a portion 19 of the base plate 7, as shown more particularly on the figure 1 .
  • a space 25, visible on the figure 1 allows the circulation of an air flow between the lighting assembly 9 and the wall 3. The heat is dissipated to the outside via a flow of air flowing in the space 25.
  • the printed circuit 15 is directly in contact with the wall 3.
  • the heat is dissipated in the wall by thermal conduction.
  • the invention is not limited to the sole embodiment of this device, described above as an example, it encompasses all the variants.
  • the base could be constituted entirely by the substrate of the printed circuit 18.

Description

La présente invention concerne un dispositif d'éclairage destiné à être fixé sur une paroi. Le dispositif concerné comporte une source lumineuse à LED.The present invention relates to a lighting device for attachment to a wall. The device concerned comprises an LED light source.

Selon l'état de la technique, le dispositif d'éclairage du genre comporte également une embase et une enveloppe translucide de fermeture. L'embase, en particulier réalisée en matériau thermoplastique ou en métal est fixée sur la paroi. L'ensemble d'éclairage est solidaire de l'embase et situé du côté opposé à la paroi. La fixation de la source lumineuse sur l'embase est réalisée par un support. L'enveloppe translucide englobe l'ensemble d'éclairage et est également fixée à l'embase.According to the state of the art, the lighting device of the kind also comprises a base and a translucent closure envelope. The base, in particular made of thermoplastic material or metal is fixed on the wall. The lighting assembly is secured to the base and located on the opposite side to the wall. Fixing the light source on the base is carried by a support. The translucent envelope includes the lighting assembly and is also attached to the base.

L'ensemble d'éclairage génère de la chaleur. L'évacuation de la chaleur est une question cruciale pour le bon fonctionnement de l'ensemble d'éclairage. En effet, une température élevée diminue le rendement énergétique de l'ensemble d'éclairage. La durée de vie de la lampe à LED est également réduite lorsque l'ensemble d'éclairage est soumis à une température élevée.The lighting assembly generates heat. The removal of heat is a crucial issue for the proper functioning of the lighting assembly. Indeed, a high temperature decreases the energy efficiency of the lighting assembly. The life of the LED lamp is also reduced when the lighting assembly is subjected to a high temperature.

Des systèmes de dissipation de la chaleur donnent satisfaction en ce que la température de la lampe à LED diminue. A titre d'exemple, l'embase peut être réalisée en une matière métallique ayant une fonction de transfert thermique.Heat dissipation systems are satisfactory in that the temperature of the LED lamp decreases. By way of example, the base may be made of a metallic material having a heat transfer function.

Le document US 6,183,104 B1 décrit un dispositif d'éclairage connu de l'état de la technique antérieure.The document US 6,183,104 B1 describes a lighting device known from the state of the prior art.

Toutefois, il est souhaitable d'améliorer la réduction de la température de la lampe à LED.However, it is desirable to improve the reduction of the temperature of the LED lamp.

La présente invention vise à résoudre tout ou partie des inconvénients mentionnés ci-dessus.The present invention aims to solve all or some of the disadvantages mentioned above.

A cet effet, la présente invention concerne un dispositif d'éclairage destiné à être fixé sur une paroi comprenant :

  • une plaque d'embase, la plaque d'embase comportant une surface arrière en regard de la paroi et une surface avant opposée à la surface arrière,
  • un ensemble d'éclairage, l'ensemble d'éclairage comprenant au moins une source lumineuse et un agencement de commande de la source lumineuse, l'agencement de commande comprenant une partie d'un circuit imprimé,
caractérisé en ce qu'au moins une partie de la plaque d'embase constitue le substrat du circuit imprimé sur lequel sont ménagées des pistes conductrices du substrat. Le substrat du circuit imprimé est directement en regard de la paroi.For this purpose, the present invention relates to a lighting device intended to be fixed on a wall comprising:
  • a base plate, the base plate having a rear surface facing the wall and a front surface opposite the rear surface,
  • a lighting assembly, the lighting assembly comprising at least one light source and a control arrangement of the light source, the control arrangement comprising a part of a printed circuit,
characterized in that at least a portion of the base plate constitutes the substrate of the printed circuit on which tracks are formed. conductors of the substrate. The substrate of the printed circuit is directly facing the wall.

Grâce aux dispositions selon l'invention, l'évacuation de la chaleur est directe. Aucun support intermédiaire ne réalise une fonction d'isolation.Thanks to the provisions according to the invention, the heat removal is direct. No intermediate support performs an isolation function.

Selon un aspect de l'invention, des moyens de fixation du dispositif à la paroi sont agencés pour définir un espace entre la surface arrière et la paroi, l'espace étant destiné à la circulation d'un flux d'air extérieur.According to one aspect of the invention, means for fixing the device to the wall are arranged to define a space between the rear surface and the wall, the space being intended for the circulation of an outside air flow.

La chaleur du dispositif est évacuée par l'intermédiaire du flux d'air extérieur circulant dans l'espace compris entre la paroi et l'ensemble d'éclairage.The heat of the device is discharged through the flow of outside air flowing in the space between the wall and the lighting assembly.

Selon un aspect de l'invention, les moyens de fixation du dispositif à la paroi sont agencés pour que le circuit imprimé soit en contact avec la paroi. La chaleur provenant de l'ensemble d'éclairage est évacuée dans la paroi par conduction.According to one aspect of the invention, the means for fixing the device to the wall are arranged so that the printed circuit is in contact with the wall. The heat from the lighting assembly is discharged into the wall by conduction.

Selon un aspect de l'invention, la source lumineuse comporte au moins une lampe à LED. Le rendement de la LED est fonction de sa température de fonctionnement. Plus la LED chauffe, plus son rendement énergétique, en d'autre termes la production lumineuse par rapport à la consommation énergétique, diminue. La durée de vie de la LED est réduite par un fonctionnement prolongé à haute température.According to one aspect of the invention, the light source comprises at least one LED lamp. The efficiency of the LED depends on its operating temperature. The more the LED heats up, the more its energy efficiency, in other words the light output compared to the energy consumption, decreases. The life of the LED is reduced by prolonged operation at high temperature.

L'évacuation de la chaleur par le flux d'air ou par contact avec la paroi est une condition préalable au prolongement de la durée de vie de la LED et l'amélioration du rendement énergétique de l'ensemble d'éclairage.The removal of heat by the air flow or by contact with the wall is a prerequisite for extending the life of the LED and improving the energy efficiency of the lighting assembly.

Selon un aspect de l'invention l'ensemble d'éclairage comporte :

  • un raccordement à une source d'énergie électrique, le raccordement permettant d'alimenter en énergie électrique le circuit imprimé et la source lumineuse,
  • un organe de protection, de régulation et/ou de limitation du courant en provenance de la source d'énergie électrique.
According to one aspect of the invention, the lighting assembly comprises:
  • a connection to a source of electrical energy, the connection making it possible to supply electrical energy to the printed circuit and the light source,
  • an element for protecting, regulating and / or limiting the current coming from the source of electrical energy.

Selon un aspect de l'invention le dispositif d'éclairage comporte une enveloppe translucide englobant l'ensemble d'éclairage, l'enveloppe translucide étant solidaire de la plaque d'embase.According to one aspect of the invention the lighting device comprises a translucent envelope encompassing the lighting assembly, the translucent envelope being secured to the base plate.

Selon un aspect de l'invention l'enveloppe translucide comprend un épaulement de fixation à la plaque d'embase.According to one aspect of the invention the translucent envelope comprises a shoulder for attachment to the base plate.

Selon un aspect de l'invention, les moyens de fixation du dispositif sur la paroi sont compris dans l'enveloppe translucide.According to one aspect of the invention, the fastening means of the device on the wall are included in the translucent envelope.

Selon un aspect de l'invention, la plaque d'embase comporte sur un bord périphérique une zone de passage pour les moyens de fixation du dispositif sur la paroi.According to one aspect of the invention, the base plate comprises on a peripheral edge a passage zone for the device of the fixing means on the wall.

Selon un aspect de l'invention, le dispositif d'éclairage comprenant un système de centrage de l'enveloppe translucide par rapport à la plaque d'embase, de manière à agencer l'enveloppe translucide et la plaque d'embase pour la mise en place des moyens de fixation du dispositif sur la paroi.According to one aspect of the invention, the lighting device comprises a centering system of the translucent envelope relative to the base plate, so as to arrange the translucent envelope and the baseplate for the implementation. place fixing means of the device on the wall.

Selon un aspect de l'invention, le substrat du circuit imprimé est réalisé au moins partiellement en aluminium recouvert d'une couche d'isolant, en résine époxy,tissu de verre imprégné de résine epoxy, ou tout autre matière pouvant être utilisée comme substrat de circuit imprimé.According to one aspect of the invention, the printed circuit substrate is made at least partially of aluminum covered with a layer of insulator, epoxy resin, glass fabric impregnated with epoxy resin, or any other material that can be used as a substrate printed circuit board.

De toute façon l'invention sera bien comprise à l'aide de la description qui suit en référence aux dessins schématiques annexés représentant, à titre d'exemple non limitatif, une forme d'exécution de ce dispositif.

  • Figure 1 est une vue en coupe d'un dispositif d'éclairage fixé à une paroi selon un premier mode de réalisation.
  • Figure 2 est une vue éclatée, en perspective du dispositif d'éclairage.
  • Figure 3 est une vue en perspective d'une enveloppe translucide selon l'invention.
In any case the invention will be better understood with the aid of the description which follows with reference to the appended diagrammatic drawings showing, by way of non-limiting example, an embodiment of this device.
  • Figure 1 is a sectional view of a lighting device attached to a wall according to a first embodiment.
  • Figure 2 is an exploded view, in perspective of the lighting device.
  • Figure 3 is a perspective view of a translucent envelope according to the invention.

Selon un premier mode de réalisation décrit sur la figure 1, un dispositif d'éclairage 1 est fixé sur une paroi 3 par des moyens de fixation 5. Le dispositif d'éclairage 1 comprend une plaque d'embase 7 et un ensemble d'éclairage 9. La plaque d'embase 7 et l'ensemble d'éclairage 9 sont solidaires. La plaque d'embase 7 comporte sur un bord périphérique une zone de passage 10 pour les moyens de fixation 5. Une enveloppe translucide 11 translucide englobe l'ensemble d'éclairage 9 et est solidaire de la plaque d'embase 7. Les moyens de fixation 5 sont compris dans l'enveloppe translucide 11. L'enveloppe translucide 11 présente un épaulement de fixation 12 de la plaque d'embase 7 en périphérie. La plaque d'embase 7 comprend un système de centrage 13 pour positionner l'enveloppe translucide sur la plaque d'embase.According to a first embodiment described on the figure 1 , a lighting device 1 is fixed on a wall 3 by fixing means 5. The lighting device 1 comprises a base plate 7 and a lighting assembly 9. The base plate 7 and the lighting assembly 9 are integral. The base plate 7 comprises on a peripheral edge a passage zone 10 for the fixing means 5. A translucent envelope 11 translucent includes the lighting assembly 9 and is integral with the base plate 7. The means of 5 are included in the translucent casing 11. The translucent casing 11 has an attachment shoulder 12 of the base plate 7 at the periphery. The base plate 7 comprises a centering system 13 for positioning the translucent envelope on the base plate.

L'ensemble d'éclairage 9 comprend un agencement de commande 14 pourvu d'un circuit imprimé 15. L'ensemble d'éclairage 9 comprend également une source lumineuse 17. Selon un mode de réalisation la source lumineuse comporte une lampe à LED.The lighting assembly 9 comprises a control arrangement 14 provided with a printed circuit 15. The lighting assembly 9 also comprises a light source 17. According to one embodiment, the light source comprises an LED lamp.

Un organe de protection, de régulation et/ou de limitation du courant en provenance d'une source d'énergie électrique, sécurise l'agencement de commande 14 et la source lumineuse 17.A device for protecting, regulating and / or limiting the current from a source of electrical energy secures the control arrangement 14 and the light source 17.

Un substrat 18 du circuit imprimé 15 constitue une partie 19 de la plaque d'embase 7, comme montré plus particulièrement sur la figure 1. On distingue une surface avant 21 et une surface arrière 23 de la plaque d'embase 7. La surface arrière 23 est en regard de la paroi 3.A substrate 18 of the printed circuit 15 constitutes a portion 19 of the base plate 7, as shown more particularly on the figure 1 . There is a front surface 21 and a rear surface 23 of the base plate 7. The rear surface 23 is facing the wall 3.

Un espace 25, visible sur la figure 1, permet la circulation d'un flux d'air entre l'ensemble d'éclairage 9 et la paroi 3. La chaleur est dissipée vers l'extérieur par l'intermédiaire d'un flux d'air circulant dans l'espace 25.A space 25, visible on the figure 1 , allows the circulation of an air flow between the lighting assembly 9 and the wall 3. The heat is dissipated to the outside via a flow of air flowing in the space 25.

Selon un deuxième mode de réalisation non représenté, le circuit imprimé 15 est directement en contact avec la paroi 3. Dans ce cas la chaleur est dissipée dans la paroi par conduction thermique.According to a second embodiment not shown, the printed circuit 15 is directly in contact with the wall 3. In this case the heat is dissipated in the wall by thermal conduction.

Comme il va de soi, l'invention ne se limite pas à la seule forme d'exécution de ce dispositif, décrite ci-dessus à titre d'exemple, elle en embrasse au contraire toutes les variantes de réalisation. En particulier, l'embase pourrait être constituée entièrement par le substrat du circuit imprimé 18.As goes without saying, the invention is not limited to the sole embodiment of this device, described above as an example, it encompasses all the variants. In particular, the base could be constituted entirely by the substrate of the printed circuit 18.

Claims (5)

  1. A lighting device (1) intended to be fastened on a wall (3) comprising:
    - a base plate (7), the base plate (7) including a rear surface (23) facing the wall (3) and a front surface (21) opposite the rear surface (23),
    - a lighting assembly (9), the lighting assembly (9) comprising at least one light source (17) and a control arrangement (14) of the light source (17), the control arrangement (14) comprising a portion of a printed circuit (15), at least one portion (19) of the base plate constitutes the substrate (18) of the printed circuit (15) on which are arranged conductive tracks of the substrate (18),
    - a translucent envelope (11) enclosing the lighting assembly (9), the translucent envelope (11) being secured to the base plate (7), the translucent envelope (11) comprising a fastening shoulder (12) to the base plate (7),
    the lighting device (1) being characterized in that the means (5) for fastening the device (1) to the wall (3) are arranged to define a space (25) between the rear surface (23) and the wall (3), the space (25) being intended to the circulation of an external air flow, the means (5) for fastening the device (1) on the wall (3) being comprised in the translucent envelope (11).
  2. The lighting device (1) according to claim 1, wherein the light source (17) includes at least one LED lamp.
  3. The lighting device (1) according to any of the preceding claims, wherein the lighting assembly (9) includes
    - a connection to an electric power source, the connection allowing to supply the printed circuit (15) and the light source (17) with electrical power,
    - a member for protecting, regulating and/or limiting the current coming from the electric power source.
  4. The lighting device (1) according to claim 1, wherein the base plate (7) includes a passage area (10) on a peripheral edge for the means (5) for fastening the device (1) on the wall (3).
  5. The lighting device (1) according to claim 4, comprising a centering system (13) of the translucent envelope (11) relative to the base plate (7), so as to arrange the translucent envelope (11) and the base plate (7) for the implementation of the means (5) for fastening the device (1) on the wall (3).
EP13170996.6A 2012-07-19 2013-06-07 Lighting device with LED lamp intended to be fixed on a wall Active EP2687775B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1256969A FR2993635A1 (en) 2012-07-19 2012-07-19 LIGHTING DEVICE WITH LED LAMP FOR FIXING ON A WALL

Publications (2)

Publication Number Publication Date
EP2687775A1 EP2687775A1 (en) 2014-01-22
EP2687775B1 true EP2687775B1 (en) 2016-08-10

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Application Number Title Priority Date Filing Date
EP13170996.6A Active EP2687775B1 (en) 2012-07-19 2013-06-07 Lighting device with LED lamp intended to be fixed on a wall

Country Status (2)

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EP (1) EP2687775B1 (en)
FR (1) FR2993635A1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6183104B1 (en) * 1998-02-18 2001-02-06 Dennis Ferrara Decorative lighting system
CN101936461A (en) * 2009-06-30 2011-01-05 富准精密工业(深圳)有限公司 Light source module
DE202011051218U1 (en) * 2011-09-06 2011-10-24 Rui Teng Opto Technology Co., Ltd. LED module fixing arrangement

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EP2687775A1 (en) 2014-01-22
FR2993635A1 (en) 2014-01-24

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