Allochromatic light emitter

• US 20030193816A1
• Filed: 04/10/2003
• Published: 10/16/2003
• Est. Priority Date: 04/11/2002
• Status: Abandoned Application

• Current Assignee: Franz Sill GmbH (Société d’Application des Méthodes Modernes d’Éclairage SA)
• Original Assignee: Franz Sill GmbH (Société d’Application des Méthodes Modernes d’Éclairage SA)
• Inventors: Rahn, Erhard
• Application Number:
  US10/410,805
• Publication Number:
  US 20030193816A1
• Time in Patent Office: Days
• US Class Current: 362/555
• CPC Class Codes: F21S 10/02 changing colors F21S10/002 - F21S10/007, F21S10/04 take precedence
• CPC Class Codes: F21S 8/022 intended to be recessed in a floor or like ground surface, e.g. pavement or false floor
• CPC Class Codes: F21S 8/033 the surface being a wall or like vertical structure, e.g. building facade
• CPC Class Codes: F21V 14/02 by movement of light sources in vehicle head lamps F21S41/657
• CPC Class Codes: F21V 21/30 Pivoted housings or frames
• CPC Class Codes: F21V 23/04 the elements being switches safety devices F21V25/00
• CPC Class Codes: F21V 29/74 with fins or blades
• CPC Class Codes: F21V 29/75 with fins or blades having different shapes, thicknesses or spacing
• CPC Class Codes: F21V 29/763 the planes containing the fins or blades having the direction of the light emitting axis
• CPC Class Codes: F21W 2131/107 of the exterior of buildings
• CPC Class Codes: F21W 2131/406 for theatres, stages or film studios
• CPC Class Codes: F21Y 2105/12 characterised by the geometrical disposition of the light-generating elements, e.g. arranging light-generating elements in differing patterns or densities
• CPC Class Codes: F21Y 2113/13 comprising an assembly of point-like light sources
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H05B 45/20 Controlling the colour of the light
• CPC Class Codes: H05B 45/28 using temperature feedback
• CPC Class Codes: Y02B 20/30 Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

An allochromatic light emitter (1) including an emitter casing (2) with a light exit port (3) and further including a fluorescent element provided in the emitter casing and a controller controlling the color of the light reproduced on a target plane. The fluorescent element is formed by an LED grid (4), with the LED grid (4) having a plurality of LEDs (5), wherein the plurality of LEDs (5) is divided into no less than two LED groups (6, 6′, 6″), with the LEDs (5) of an LED group (6) emitting light of a wave length which is different from the wave length of the emitted light of another LED group (6′, 6″). The controller includes an electronic control (7) providing different LED groups (6, 6′, 6″) independently of one another with a respectively variable operating voltage (U, U′, U″). The relationships of the operating voltages (U, U′, U″) of different LED groups (6, 6′; 6″) are controlled and/or regulated in accordance with a color to be reproduced on a target plane.

Claims

1. An allochromatic light emitter, comprising:

an emitter casing with a light exit port;

a fluorescent substance formed by an LED grid, said LED grid having a plurality of LEDs divided into no less than two LED groups, with the LEDs of an LED group emitting light of a wave length differing from the wave length of the emitted light of another LED group;

a controller for controlling the color of the light reproduced on a target plane with an electronic control providing various LED groups independently of one another with a respectively variable operating voltage with the relationships of the operating voltages of different LED groups controlled and/or regulated with respect to one another in accordance with a color to be reproduced on a target plane.

2. An allochromatic light emitter according to claim 1, wherein three LED groups are provided, and wherein the LEDs of the different LED groups emit red-colored, green-colored or blue-colored light.

3. An allochromatic light emitter according to claim 1, wherein the LEDs of different LED groups are uniformly distributed across a grid board.

4. An allochromatic light emitter according to claim 1, wherein red-colored, green-colored and blue-colored LEDs are arranged immediately adjacent with respect to one another, preferably on the tips of a equilateral triangle.

5. An allochromatic light emitter according to claim 1, wherein the LEDs are embedded in an electrically insulating heat-conducting substance, and wherein at least the light exit port or lens of each LED protrudes from the heat-conducting substance.

6. An allochromatic light emitter according to claim 3, wherein the grid board is arranged and fixed in an LED casing provided within the emitter casing, said LED casing being formed of a heat-conducting material including metal, and that the light exit ports are clear of the LED casing.

7. An allochromatic light emitter according to claim 6, wherein at least part of the outer wall of the LED casing is provided with cooling fins.

8. An allochromatic light emitter according to claim 1, wherein if the emitter casing is provided on an outer surface with cooling fins and or cooling ports, the interior of the emitter casing is provided with a circulating-air blower if the emitter casing is of the closed type.

9. An allochromatic light emitter according to claim 1, wherein the grid board or the LED casing vis-à

-vis the emitter casing is manually or mechanically swivable about one axis or about two axes in orthogonal relationship with respect to one another.

10. A process of irradiating a target plane with changing colors, the process comprising:

providing an emitter casing with a light exit port;

providing a fluorescent substance formed by an LED grid, said LED grid having a plurality of LEDs divided into no less than two LED groups, with the LEDs of an LED group emitting light of a wave length differing from the wave length of the emitted light of another LED group; and

controlling the color of the light reproduced on a target plane with an electronic control providing various LED groups independently of one another with a respectively variable operating voltage with the relationships of the operating voltages of different LED groups controlled and/or regulated with respect to one another in accordance with a color to be reproduced on a target plane and the operating voltages of the LEDs of different LED groups of the allochromatic light emitter are controlled in relationships defined and varied with respect to one another in accordance with a predetermined color-changing sequence.

11. A process for use of an allochromatic light emitter, the process comprising:

providing an emitter casing with a light exit port;

providing a fluorescent substance formed by an LED grid, said LED grid having a plurality of LEDs divided into no less than two LED groups, with the LEDs of an LED group emitting light of a wave length differing from the wave length of the emitted light of another LED group;

controlling the color of the light reproduced on a target plane with an electronic control providing various LED groups independently of one another with a respectively variable operating voltage with the relationships of the operating voltages of different LED groups controlled and/or regulated with respect to one another in accordance with a color to be reproduced on a target plane to irradiate building facades, or for illuminating spaces, wherein a color change is actuated for informing people present in the spaces or viewing the facade of special conditions, in particular conditions of danger, or for use in the communicative technology, with predetermined paths being indicated by actuating an associated color.