LIGHTING DEVICE

• US 20100277316A1
• Filed: 01/13/2009
• Published: 11/04/2010
• Est. Priority Date: 01/17/2008
• Status: Active Grant

• Current Assignee: Koninklijke Philips N.V.
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Hommes, Vanja, Vinkenvleugel, Lucius Theodorus, Schlangen, Lucas Josef Maria
• Granted Patent: US 8,427,311 B2
• Time in Patent Office: Days
• US Class Current: 340/540
• CPC Class Codes: A61M 2021/0044 by the sight sense
• CPC Class Codes: A61M 2021/0083 especially for waking up
• CPC Class Codes: A61M 21/00 Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis
• CPC Class Codes: A61M 2205/18 with alarm
• CPC Class Codes: A61M 2205/3368 Temperature
• CPC Class Codes: A61M 2205/3375 Acoustical, e.g. ultrasonic, measuring means
• CPC Class Codes: A61M 2205/50 with microprocessors or computers
• CPC Class Codes: A61M 2230/63 Motion, e.g. physical activity
• CPC Class Codes: A61N 2005/0653 Organic light emitting diodes
• CPC Class Codes: F21S 10/02 changing colors F21S10/002 - F21S10/007, F21S10/04 take precedence
• CPC Class Codes: F21V 23/0442 activated by means of a sensor, e.g. motion or photodetectors
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: G04C 19/02 by electric lamps
• CPC Class Codes: G04G 11/00 Producing optical signals at preselected times
• CPC Class Codes: H05B 45/00 Circuit arrangements for operating light-emitting diodes [LED]
• CPC Class Codes: H05B 45/20 Controlling the colour of the light
• CPC Class Codes: H05B 47/155 Coordinated control of two or more light sources

Abstract

The invention provides a lighting device (1) comprising one or more light sources (10) arranged to generate light, an accommodating device (5) having an external boundary (2) which is at least partly translucent and is arranged to accommodate the one or more light sources and a controller (40). The lighting device can generate two types of light. One or more lighting parameters selected from the group consisting of the first luminous intensity of the first type of light, the second luminous intensity of the second type of light, the color point of the first type of light and the color point of the second type of light can be controlled. This allows task lighting and atmosphere lighting. The invention is also directed to a method of providing a wake-up stimulus by means of such a lighting device.

Claims

1. A lighting device (1) comprising:

a. one or more light sources (10) arranged to generate light (11);

b. an accommodating device (5) having an external boundary (2) which is at least partly translucent and is arranged to accommodate the one or more light sources (10); and

c. a controller (40) connected to the one or more light sources (10);

wherein

a first part (21) of the external boundary (2) and the one or more light sources (10) are arranged to provide at least part of the light (11) through the first part (21) of the external boundary (2), thereby providing a first flux of a first type of light (111), the first type of light (111) having a color and a first luminous intensity;

a second part (22) of the external boundary (2) and the one or more light sources (10) are arranged to provide at least part of the light (11) through the second part (22) of the external boundary (2), thereby providing a second flux of a second type of light (112), the second type of light corresponding to white light and having a second luminous intensity; and

the controller (40) comprises a trigger input for receiving a trigger signal and is arranged to increase the first luminous intensity of the first type of light (111) after receiving the trigger signal, wherein the color of the first type of light (111) initially has a dominant wavelength in the range of 580 to 770 nm, and to subsequently increase the second luminous intensity of the second type of light (112).

2. The lighting device (1) according to claim 1, wherein the controller (40) is arranged to control the color of the first type of light (111) to move towards the black body radiator color temperature line.

3. The lighting device (1) according to claim 1, wherein the controller (40) is arranged to increase the second luminous intensity of the second type of light (112) after the first type of light (111) has been switched on.

4. The lighting device (1) according to claim 1, wherein the controller (40) is arranged to switch off the flux of the first type of light (111) after the second type of light (112) has been switched on.

5. The lighting device (1) according to claim 1, wherein the controller (40) is arranged to increase the first luminous intensity to a value in the range of 1 to 50 lux in a period of time ranging from 5 to 45 minutes, and to increase the second luminous intensity to a value in the range of 50 to 800 lux in a subsequent period of time ranging from 5 to 30 minutes.

6. The lighting device (1) according to claim 1, wherein the lighting device (1) is arranged to generate the first type of light (111) and the second type of light (112) in substantially different directions relative to the lighting device (1).

7. The lighting device (1) according to claim 1, wherein the one or more light sources (10) comprise a first light source (101) and a second light source (102), wherein the first light source (101) and the first part (21) of the external boundary (2) are arranged to generate the first type of light (111), and wherein the second light source (102) and the second part (22) of the external boundary (2) are arranged to generate the second type of light (112).

8. The lighting device (1) according to claim 1, wherein the first light source (101) comprises one or more LEDs and the second light source (102) comprises one or more lamps selected from the group consisting of filament lamps, fluorescent lamps, halogen lamps, low-pressure gas discharge lamps, high-pressure gas discharge lamps, LEDs, and OLEDs.

9. The lighting device (1) according to claim 1, wherein the controller (40) is arranged to control one or more of the one or more lighting parameters as a function of one or more input signals retrieved from a device selected from the group consisting of a user input device (43), a clock device (45), a sensor (300) and memory settings from a memory (41) of the controller (40).

10. The lighting device (1) according to claim 1, wherein the lighting device (1) further comprises a sensor (300) communicating with the controller (40), arranged to sense one or more sensorial parameters selected from the group consisting of outside temperature, outside light intensity, the color temperature of the daylight, and weather conditions, and wherein the controller (40) is arranged to control the flux of the first type of light (111) and the flux of the second type of light (112) in dependence upon the one or more sensorial parameters.

11. The lighting device (1) according to claim 1, wherein the lighting device (1) further comprises an optical filter arranged to filter part of the light (11) of the one or more light sources (10), thereby generating the first type of light (111).

12. The lighting device (1) according to claim 1, wherein the lighting device (1) comprises a user input device (43) for generating a user input signal, wherein the controller (40) is arranged to vary the second luminous intensity under the control of the user input signal.

13. The lighting device (1) according to claim 1, wherein the lighting device (1) comprises a sound sensor (300) for sensing and detecting an audible alarm signal and generating the trigger signal.

15. A method of providing a wake-up stimulus by means of a lighting device (1) according to claim 1, wherein the method comprises the steps of generating a first flux of a first type of light (111) with an increasing first luminous intensity after receiving a trigger signal, the first type of light (111) initially having a color with a dominant wavelength in the range of 580 to 770 nm, and subsequently generating a second flux of a second type of light (112) with an increasing second luminous intensity, having a color corresponding to white light.

14. A lighting device (1) comprising

a. one or more light sources (10) arranged to generate light (11);

b. a controller (40) connected to the one or more light sources (10);

wherein

the one or more light sources (10) are arranged to provide a first flux of a first type of light (111), the first type of light (111) having a color and a first luminous intensity;

and to provide a second flux of a second type of light (112), the second type of light corresponding to white light and having a second luminous intensity; and

the controller (40) comprises a trigger input for receiving a trigger signal, wherein the controller (40) is arranged to increase the first luminous intensity of the first type of light (111) after receiving the trigger signal, wherein the color of the first type of light (111) initially has a dominant wavelength in the range of 580 to 770 nm, and to subsequently increase the second luminous intensity of the second type of light (112).