EP1426677A2 - Dispositif d'éclairage à diodes électroluminescentes - Google Patents
Dispositif d'éclairage à diodes électroluminescentes Download PDFInfo
- Publication number
- EP1426677A2 EP1426677A2 EP03354087A EP03354087A EP1426677A2 EP 1426677 A2 EP1426677 A2 EP 1426677A2 EP 03354087 A EP03354087 A EP 03354087A EP 03354087 A EP03354087 A EP 03354087A EP 1426677 A2 EP1426677 A2 EP 1426677A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- light
- lighting device
- distribution means
- emitters
- lighting
- 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.)
- Withdrawn
Links
Images
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
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/20—Controlling the colour of the light
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
- F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
- F21S43/14—Light emitting diodes [LED]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
- F21S43/235—Light guides
-
- 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
- F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
- F21V2200/20—Use of light guides, e.g. fibre optic devices, in lighting devices or systems of light guides of a generally planar shape
-
- 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
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
- F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
-
- 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
Definitions
- the invention relates to a lighting element comprising at least one diode light emitter electroluminescent device for emitting white light, and distribution means to increase the light emission surface, said distribution means being intended to receive at least one incident light beam supplied by said transmitter of light-emitting diode light and distributing said beam into outgoing beams to a light scattering zone.
- LED lighting devices are based on light-emitting diode several diodes to get white light.
- the two most common types of association known are the use of diodes of several colors in a poly-chromatic system or the use of a white light emitter comprising at least one emitting diode in the blue or ultraviolet to excite layers of phosphorus that in turn emit white light.
- Polychromatic systems such as those shown in Figure 1, are generally consist of light emitting diode arrays 1, 2, 3 emitting in the red, green and blue. They are widely used for signage but do not not allow to have a good color rendering index. Their use for lighting risk of denaturing the color of illuminated objects.
- White light-emitting diode lighting devices 4, shown in FIG. Figure 2 are based on phosphorescence fluorescence which when excited by a blue or ultraviolet radiation 6 re-emit a different color light 8 allowing to have a white light 9.
- Light-emitting diode lighting blanks can cover the visible spectrum sufficiently uniformly to have a good color rendering index. However, the spectral density of energy is imposed by the nature of the diodes and it is difficult to control the lighting color temperature.
- the color temperature can be corrected by the use of light-emitting diodes other colors 10, 11 in combination with the white light-emitting diodes.
- the diodes 10 and 11 may emit in particular red 12 or green light 13.
- patent applications WO01 / 41215 and US2002 / 0048177 show examples combination of white diodes and color diodes to correct the temperature of color.
- the luminous flux at the output of the light-emitting diodes is generally low. So, known lighting devices require a large number of diodes electroluminescent to obtain a sufficient level of illumination. In addition, lighting devices consisting of such diodes are very bulky and require a specific layout of a lighting system.
- Some lighting devices include light distributors such as devices described in WO00 / 15462 and WO01 / 14790. However, these signaling devices do not allow good quality light for lighting.
- the aim of the invention is a lighting device making it possible to solve the problems of state-of-the-art devices and providing good quality and secure lighting for a user.
- the lighting device comprises means for broadcast to diffuse outgoing light beams distributed by the means of division.
- the diffusion means are arranged between the distribution means and the light scattering area.
- the diffusion means are associated with the distribution means for to form the same element.
- the lighting device comprises means for reflection arranged near the means of distribution opposite the diffusion zone from light.
- the lighting device comprises at least one diode light emitter Electroluminescent power supply greater than one watt or power luminous greater than ten lumens.
- the distribution means comprise a narrow part receiving at minus an incident light beam and a wide part to distribute the beams luminous outgoing for lighting.
- the axis of at least one incident beam is substantially perpendicular to the narrow part.
- the lighting device comprises at least one local reflector for receive an incident beam and direct it in a direction where its axis is substantially perpendicular to the narrow part.
- the distribution means comprise a series of prisms.
- the distribution means have a circular or elliptical shape.
- the lighting device comprises means control electronics connected between a power supply line and the Light emitting diode light emitters for controlling lighting.
- control means comprise control means for check the color temperature and / or light intensity.
- the lighting device comprises a presence detector connected to the control means for controlling the lighting control according to the presence of a person in a detection zone.
- the lighting device comprises means of communication controlling light emitting diode emitters to emit a signal optical.
- control means comprise means for regulating the light according to the ambient light flux and / or the time.
- the lighting device comprises cycle memory means light connected to the light control means.
- a lighting device comprises light emitting diode emitters 20 emitting light. white light 21, and an optical light splitter 22 to decrease the intensity luminous per unit area.
- the optical splitter 22 is intended to receive incident light beams 23 provided by the white light emitters 20 with diodes electroluminescent and to distribute said incident beams in outgoing beams 24 to a light scattering zone.
- a diffuser 26 receives distributed beams of light and diffuses them towards the zone of 25.
- the diffuser 26 may consist of an insert disposed against the optical splitter 22 or be associated with said splitter in one and the same element. He can too also be realized in the material of the distributor by a suitable treatment such as by frosting.
- a reflector 27 disposed near the distributor opposite the diffusion zone of the light 25 returns a portion of the beams of light to the diffusion zone and thus increases the efficiency of the lighting device.
- the reflector can be constituted by a mirror.
- the distributor comprises a narrow portion 28 for receive incident light beams 21 and a wide portion 29 to distribute the stream luminous outgoing beams for lighting.
- the axis of the beams incidents is substantially perpendicular to the narrow part.
- the incident beams can also be emitted on a local reflector 30 which returns them in a sense substantially perpendicular to the narrow part.
- Such a variant is represented on the drawing of the figure 4.
- the distributor is shown in section view from the side.
- the distributor comprises a series of prisms 31.
- This form sawtooth preferably comprises prisms 32 further away from the diffusion area on board the teller and prisms 33 closer to the diffusion zone towards the center of the distributor.
- the distributor has a generally circular shape or elliptical.
- the prisms follow the general form to form a series of bonuses concentric at different distances from the edge of the tundish, the diffuser and the diffusion.
- a circular shaped distributor is shown in the drawing of Figure 5.
- White light emitting diode emitters are preferably high power transmitters to reduce the number of transmitters.
- White light emitters have a light output greater than ten lumens or one power supply greater than one watt.
- the power light of a white light emitter may be of the order of one hundred lumens or its Power supply power can be in the range of five watts.
- the lighting device comprises several light emitters white light-emitting diode disposed at the periphery of the splitter.
- Transmitter cooling devices are directed to the outside of the dispatcher for improve lighting efficiency and make temperature operation more stable. Indeed, a heating of the light-emitting diodes can disturb the intensity and the color emitted by the emitter diodes.
- the lighting device comprises transmitters 34 and 35 of blue and red light with diodes emitting.
- the distributor and / or the diffuser also act as mixer of color and light to make the lighting uniform and of good quality.
- Issuers white, blue, and red light respectively 20, 34 and 35 are preferably arranged in periphery of the splitter according to a regular spatial period and a symmetry of revolution. Thus, edge effects are avoided and the scattered light is homogeneous.
- the issuer of Blue light can also be replaced or supplemented with a green light emitter.
- FIG. 6 represents a block diagram of a connected electronic control circuit 40 between a power source 41 and the diode light emitters electroluminescent circuits 20, 34, 35.
- the control circuit comprises a circuit 42 connected to the source 41 and power circuits 43, 44 and 45 for supplying emitters or groups of light emitters 20, 34 and 35, respectively white, blue and red.
- a circuit 46 for control and regulation is connected to the circuits of power to control the lighting of the light emitters according to parameters operating and control signals.
- the control circuit 46 allows in particular to control the color temperature and / or light intensity.
- the lighting device comprises a light sensor 47 connected to the circuit 46 to provide signals representative of light or illumination.
- the Light regulation can operate according to a slave system and to instructions.
- a memory circuit 48 connected to the control and regulation circuit makes it possible to memorize light cycles and / or control parameters.
- the regulation of the light can be made according to the ambient light flux and / or the time.
- the lighting device comprises a presence detector 49 connected to the circuit 48 for control lighting according to the presence of a person in a detection zone said sensor.
- the presence detector 49 is preferably located in the center of the lighting device, for example in the center of the light distributor 22.
- the control may also be associated with timing or ignition delay functions or extinction.
- a communication circuit 50 is connected to the circuit 46 to receive signals from controlling a remote control receiving device 51 and or a network or a bus 52.
- the communication circuit may also control electroluminescent diodes light emitters for emitting light signals.
- the circuit of communication can control the blue diode of the light emitter 34.
- FIGS. 7, 8 and 9 represent views of the arrangement of the light emitters 20, 34, and 35 around the optical splitter 22 of a lighting device according to a mode of embodiment of the invention.
- the splitter comprises prisms circular shapes but other forms may be suitable for distributing light beams especially a regular or irregular slope.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Led Device Packages (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
Description
- plusieurs émetteurs de lumière blanche à diodes électroluminescente disposés en périphérie des moyens de répartition,
- des émetteurs de lumière rouge à diodes électroluminescentes, et
- des émetteurs de lumière bleue et/ou verte à diodes électroluminescentes,
- les figures 1 et 2 représentent des dispositifs d'éclairage connus ;
- la figure 3 représente un dispositif d'éclairage selon un mode de réalisation de l'invention;
- la figure 4 représente un dispositif d'éclairage selon une variante du mode de réalisation de l'invention de la figure 3 ;
- la figure 5 représente une vue de face d'un dispositif selon le mode réalisation de la figure 3;
- la figure 6 représente un schéma d'un circuit de commande d'un dispositif d'éclairage selon un mode de réalisation de l'invention ;
- les figures 7, 8, et 9 représentent des vues de la disposition des émetteurs de lumière et du répartiteur optique d'un dispositif d'éclairage selon un mode de réalisation de l'invention.
Claims (17)
- Dispositif d'éclairage comportant au moins un émetteur de lumière (20) à diode électroluminescente destiné à émettre de la lumière blanche, et des moyens de répartition (22) pour augmenter la surface d'émission de lumière, lesdits moyens de répartition étant destinés à recevoir au moins un faisceau lumineux incident (23) fourni par ledit émetteur de lumière à diode électroluminescente et à répartir ledit faisceau (21) en faisceaux sortants (24) vers une zone (25) de diffusion de lumière,
caractérisé en ce qu'il comporteplusieurs émetteurs (20) de lumière blanche à diodes électroluminescente disposés en périphérie des moyens de répartition (22),des émetteurs (35) de lumière rouge à diodes électroluminescentes, etdes émetteurs (34) de lumière bleue et/ou verte à diodes électroluminescentes, - Dispositif d'éclairage selon la revendication 1, caractérisé en ce qu'il comporte des moyens (26) de diffusion pour diffuser des faisceaux lumineux sortants (24) répartis par les moyens de répartition (22).
- Dispositif d'éclairage selon la revendication 2, caractérisé en ce que les moyens de diffusion (26) sont disposés entre les moyens de répartition (22) et la zone de diffusion de lumière (25).
- Dispositif d'éclairage selon la revendication 2, caractérisé en ce que les moyens de diffusion (26) sont associés aux moyens de répartition (22) pour former un même élément.
- Dispositif d'éclairage selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'il comporte des moyens de réflexion (27) disposés à proximité des moyens de répartition (22) à l'opposé de la zone (25) de diffusion de lumière.
- Dispositif d'éclairage selon l'une quelconque des revendications 1 à 5 caractérisé en ce qu'il comporte au moins un émetteur de lumière (20) à diode électroluminescente de puissance d'alimentation supérieure à un watt ou de puissance lumineuse supérieure à dix lumens.
- Dispositif d'éclairage selon l'une quelconque des revendications 1 à 6 caractérisé en ce que les moyens de répartition comportent une partie étroite (28) recevant au moins un faisceau lumineux incident (21) et une partie large (29) pour répartir les faisceaux lumineux sortants (24) destinés à l'éclairage.
- Dispositif d'éclairage selon la revendication 7 caractérisé en ce l'axe d'au moins un faisceau incident (21) est sensiblement perpendiculaire à la partie étroite (28).
- Dispositif d'éclairage selon l'une des revendications 7 ou 8 caractérisé en ce qu'il comporte au moins un réflecteur local (30) pour recevoir un faisceau incident (21) et le diriger dans un sens où son axe est sensiblement perpendiculaire à la partie étroite (28).
- Dispositif d'éclairage selon l'une quelconque des revendications 7 à 9, caractérisé en ce que les moyens de répartition (22) comportent une suite de prismes (31, 32, 33).
- Dispositif d'éclairage selon l'une quelconque des revendications 7 à 10 caractérisé en ce que les moyens de répartition (22) on une forme circulaire ou elliptique.
- Dispositif d'éclairage selon l'une quelconque des revendications 1 à 11 caractérisé en ce qu'il comporte des moyens électroniques de commande (40) connectés entre une ligne d'alimentation électrique (41) et les émetteurs (20, 34, 35) de lumière à diode électroluminescente pour contrôler l'éclairage.
- Dispositif d'éclairage selon la revendication 12 caractérisé en ce que les moyens de commandes (40) comportent des moyens de contrôle (46) pour contrôler la température de couleur et/ou l'intensité lumineuse.
- Dispositif d'éclairage selon l'une des revendications 12 ou 13 caractérisé en ce qu'il comporte un détecteur (49) de présence connecté aux moyens de contrôle (46) pour contrôler la commande d'éclairage en fonction de la présence d'une personne dans une zone de détection.
- Dispositif d'éclairage selon l'une quelconque des revendications 12 à 14 caractérisé en ce qu'il comporte des moyens de communication (50) commandant des émetteurs de lumière (20, 34, 35) à diode électroluminescente pour émettre un signal optique.
- Dispositif d'éclairage selon l'une quelconque des revendications 12 à 15 caractérisé en ce que les moyens de contrôle (46) comportent des moyens de régulation de la lumière en fonction du flux lumineux ambiant et/ou de l'heure.
- Dispositif d'éclairage selon l'une quelconque des revendications 12 à 16 caractérisé en ce qu'il comporte des moyens de mémorisation (48) de cycle lumineux connectés aux moyens de contrôle (46) de la lumière.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0215356 | 2002-12-05 | ||
FR0215356A FR2848288B1 (fr) | 2002-12-05 | 2002-12-05 | Dispositif d'eclairage a diodes electroluminescentes |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1426677A2 true EP1426677A2 (fr) | 2004-06-09 |
EP1426677A3 EP1426677A3 (fr) | 2010-12-22 |
Family
ID=32310009
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03354087A Withdrawn EP1426677A3 (fr) | 2002-12-05 | 2003-11-28 | Dispositif d'éclairage à diodes électroluminescentes |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1426677A3 (fr) |
FR (1) | FR2848288B1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2465657C1 (ru) * | 2011-09-02 | 2012-10-27 | Татьяна Евгеньевна Жолудева | Декоративно-рекламное световое изделие |
RU2552090C1 (ru) * | 2014-01-22 | 2015-06-10 | Сергей Вячеславович Сергеев | Рекламный транспарант |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020047628A1 (en) * | 1997-08-26 | 2002-04-25 | Frederick Morgan | Methods and apparatus for controlling devices in a networked lighting system |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5816681A (en) * | 1995-11-02 | 1998-10-06 | Kaiser Optical Systems, Inc. | Inconspicuous light sources particularly for vehicular applications |
US6550949B1 (en) * | 1996-06-13 | 2003-04-22 | Gentex Corporation | Systems and components for enhancing rear vision from a vehicle |
JP3118503B2 (ja) * | 1996-07-08 | 2000-12-18 | シーシーエス株式会社 | 照明装置 |
GB9919689D0 (en) * | 1999-08-19 | 1999-10-20 | Microsharp Corp Limited | Back-lighting arrangement and the like |
JP4266551B2 (ja) * | 2000-12-14 | 2009-05-20 | 三菱レイヨン株式会社 | 面光源システムおよびそれに用いる光偏向素子 |
JP2002270899A (ja) * | 2001-03-14 | 2002-09-20 | Mitsubishi Electric Lighting Corp | 色温度可変led光源モジュール |
-
2002
- 2002-12-05 FR FR0215356A patent/FR2848288B1/fr not_active Expired - Fee Related
-
2003
- 2003-11-28 EP EP03354087A patent/EP1426677A3/fr not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020047628A1 (en) * | 1997-08-26 | 2002-04-25 | Frederick Morgan | Methods and apparatus for controlling devices in a networked lighting system |
Also Published As
Publication number | Publication date |
---|---|
EP1426677A3 (fr) | 2010-12-22 |
FR2848288A1 (fr) | 2004-06-11 |
FR2848288B1 (fr) | 2005-12-09 |
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