Method for guiding a human to a reference location, and lighting system comprising a plurality of light sources for use in such method

• US 9,357,615 B2
• Filed: 06/15/2012
• Issued: 05/31/2016
• Est. Priority Date: 07/01/2011
• Status: Active Grant

• Current Assignee: Signify Holding B.V. (Signify N.V.)
• Original Assignee: Koninklijke Philips N.V.
• Inventors: Van Herpen, Maarten Marinus Johannes Wilhelmus
• Primary Examiner(s): Houston, Adam
• Application Number:
  US14/129,366
• Publication Number:
  US 20140132183A1
• Time in Patent Office: 1,446 Days
• Field of Search: 340/328, 340/628
• US Class Current: 1/1
• CPC Class Codes: F21S 9/022 Emergency lighting devices
• CPC Class Codes: F21V 23/008 the casing being outside the housing of the lighting device
• CPC Class Codes: G08B 7/066 guiding along a path, e.g. evacuation path lighting strip
• CPC Class Codes: H05B 47/17 Operational modes, e.g. switching from manual to automatic mode or prohibiting specific operations
• CPC Class Codes: H05B 47/175 by remote control

Abstract

The invention provides a method for intuitively guiding a human to a reference location, such as an emergency exit, with a lighting system comprising a plurality of light sources along a pathway to the reference location. The lights shine with an intensity dependent upon the distance to the reference location, in particular the intensity of the light increases with decreasing distance to the reference location. The location of the emergency can be determined through emergency sensors, so that the intensity of the light sources is then controlled to lead away from the danger to the nearest safe exit.

Claims

1. A method for intuitively guiding a human to a reference location with a lighting system, wherein the reference location comprises an emergency exit, and wherein the lighting system comprises a plurality of light sources, each having an emergency lighting function and a general lighting function, and wherein the lighting system further comprises a control unit configured to control the light intensity of the individual light sources as function of the distance of the individual light sources to the reference location, by providing with the light sources along a pathway to the reference location light with an intensity dependent upon the distance to the reference location, wherein the intensity of the light increases with decreasing distance to the reference location.

2. The method according to claim 1, wherein each light source is configured to generate light with a variable light intensity.

3. The method according to claim 1, further comprising defining, in case of an emergency, a location of emergency and further controlling the light intensity of the individual light sources as function of the distance to the location of emergency.

4. The method according to claim 3, further comprising, in case of an emergency, reducing light of other light sources than those used for said providing with the light sources along the pathway to the reference location light with an intensity dependent upon the distance to the reference location.

5. A lighting system comprising a plurality of light sources, wherein each light source is configured to generate light with a variable light intensity and wherein each light source has an emergency lighting function and a general lighting function, and a control unit, configured to control the light intensity of the individual light sources as function of a distance of the individual light sources to a reference location comprising an emergency exit such that the light intensity increases with decreasing distance to the reference location.

6. The lighting system 5 according to claim 5, wherein the control unit is further configured to control the light intensity of the individual light sources as function of a distance to a location of emergency.

7. The lighting system according to claim 6, further comprising an emergency sensor configured to generate an emergency sensor signal, wherein the control unit is further configured to control the light intensity of the individual light sources as function of the emergency sensor signal, wherein the emergency sensor comprises one or more sensors selected from the group consisting of a smoke sensor, a temperature sensor, a sound sensor, a gas sensor, a water sensor, and a radioactivity sensor.