Lighting control device and lighting system
First Claim
1. A lighting control device, configured to control each of lighting fixtures for giving respective light to an illuminated space, the lighting control device comprising:
- an acquisition unit configured to acquire, from an image sensor for capturing an image of the illuminated space, the captured image;
a detector configured to detect first information which represents sensing presence or absence of a person in the illuminated space and represents a location of the person in the illuminated space when sensing the presence, and second information representing brightness of the illuminated space;
a controller configured to control each of the lighting fixtures;
a judgment unit configured to judge whether or not external light enters the illuminated space, the external light being light except for respective light from the lighting fixtures; and
a switch configured to switch an operation mode of the controller so that it becomes a first mode when it is judged by the judgment unit that the external light enters and so that it becomes a second mode when it is judged that no external light enters, whereinthe controller is configured;
in the first mode, to receive both detected results of the first information and the second information from the detector and to control the lighting fixtures in unison so that the second information becomes a prescribed target value when the person is present in the illuminated space; and
in the second mode, to receive a detected result of the first information from the detector and to individually control respective lighting fixtures in accordance with the first information regardless of the second information when the person is present in the illuminated space.
2 Assignments
0 Petitions
Accused Products
Abstract
A detector detects first information which represents sensing presence or absence of a person in an illuminated space and represents a position of the person in the illuminated space when sensing the presence, and second information representing brightness of the illuminated space. When external light enters the illuminated space, a controller receives both detected results of first information and second information and controls lighting fixtures in a lump so that the second information becomes a prescribed target value when the presence is sensed. When no external light enters the illuminated space, the controller receives a detected result of the first information and individually controls respective lighting fixtures in accordance with the first information regardless of the second information.
6 Citations
8 Claims
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1. A lighting control device, configured to control each of lighting fixtures for giving respective light to an illuminated space, the lighting control device comprising:
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an acquisition unit configured to acquire, from an image sensor for capturing an image of the illuminated space, the captured image; a detector configured to detect first information which represents sensing presence or absence of a person in the illuminated space and represents a location of the person in the illuminated space when sensing the presence, and second information representing brightness of the illuminated space; a controller configured to control each of the lighting fixtures; a judgment unit configured to judge whether or not external light enters the illuminated space, the external light being light except for respective light from the lighting fixtures; and a switch configured to switch an operation mode of the controller so that it becomes a first mode when it is judged by the judgment unit that the external light enters and so that it becomes a second mode when it is judged that no external light enters, wherein the controller is configured; in the first mode, to receive both detected results of the first information and the second information from the detector and to control the lighting fixtures in unison so that the second information becomes a prescribed target value when the person is present in the illuminated space; and in the second mode, to receive a detected result of the first information from the detector and to individually control respective lighting fixtures in accordance with the first information regardless of the second information when the person is present in the illuminated space. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A lighting system, comprising
lighting fixtures; - and
a lighting control device configured to control each of the lighting fixtures for giving respective light to an illuminated space, the lighting control device comprising; an acquisition unit configured to acquire, from an image sensor for capturing an image of the illuminated space, the captured image; a detector configured to detect first information which represents sensing presence or absence of a person in the illuminated space and represents a location of the person in the illuminated space when sensing the presence, and second information representing brightness of the illuminated space; a controller configured to control each of the lighting fixtures; a judgment unit configured to judge whether or not external light enters the illuminated space, the external light being light except for respective light from the lighting fixtures; and a switch configured to switch an operation mode of the controller so that it becomes a first mode when it is judged by the judgment unit that the external light enters and so that it becomes a second mode when it is judged that no external light enters, wherein the controller is configured; in the first mode, to receive both detected results of the first information and the second information from the detector and to control the lighting fixtures in unison so that the second information becomes a prescribed target value when the person is present in the illuminated space; and in the second mode, to receive a detected result of the first information from the detector and to individually control respective lighting fixtures in accordance with the first information regardless of the second information when the person is present in the illuminated space.
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Specification