LIGHTING CONTROL SYSTEM AND LIGHTING CONTROL METHOD
First Claim
1. A lighting control system comprising:
- a plurality of luminaires installed in a lighting space surrounded by walls;
an existence or nonexistence detecting unit configured to detect existence or nonexistence of a person in the lighting space;
a direction detecting unit configured to detect a direction the person is facing if the existence or nonexistence detecting unit detects the existence of the person in the lighting space;
a distance detecting unit configured to detect a distance between one of the walls positioned in front of the person in the facing direction detected by the direction detecting unit, and the person; and
a control unit configured to selectively switch between a first control for performing lighting control of the luminaires to illuminate said one of the walls positioned in front of the person in the facing direction if the distance detected by the distance detecting unit is a specified distance or less, and a second control for performing lighting control of the luminaires to reduce brightness at positions in the lighting space that are farther from a position of the person if the distance detected by the distance detecting unit is larger than the specified distance.
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Abstract
Plural luminaires are installed in a lighting space surrounded by a wall part. A sensor equipment detects existence or nonexistence of a person in the lighting space. If existence of a person in the lighting space is detected, the sensor equipment detects a direction of the person. The sensor equipment detects a distance between the wall part positioned in front of the direction of the person and the person. A lighting control unit selectively switches between a first control for performing lighting control of the luminaires to illuminate the wall part positioned in front of the direction of the person if the detected distance is a specified distance or less, and a second control for performing lighting control of the luminaires to reduce brightness at a place as the place becomes farther from a position of the person if the detected distance is larger than the specified distance.
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Citations
18 Claims
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1. A lighting control system comprising:
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a plurality of luminaires installed in a lighting space surrounded by walls; an existence or nonexistence detecting unit configured to detect existence or nonexistence of a person in the lighting space; a direction detecting unit configured to detect a direction the person is facing if the existence or nonexistence detecting unit detects the existence of the person in the lighting space; a distance detecting unit configured to detect a distance between one of the walls positioned in front of the person in the facing direction detected by the direction detecting unit, and the person; and a control unit configured to selectively switch between a first control for performing lighting control of the luminaires to illuminate said one of the walls positioned in front of the person in the facing direction if the distance detected by the distance detecting unit is a specified distance or less, and a second control for performing lighting control of the luminaires to reduce brightness at positions in the lighting space that are farther from a position of the person if the distance detected by the distance detecting unit is larger than the specified distance. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of controlling lighting of a plurality of luminaires installed in a lighting space, comprising:
selectively switching between a first control for performing lighting control of the luminaires to illuminate a wall positioned in front of a person in the lighting space if a distance between the person and the wall is a specified distance or less, and a second control for performing lighting control of the luminaires to reduce brightness at positions in the lighting space that are farther from a position of the person if the distance between the person and the wall is larger than the specified distance. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A method of controlling lighting of a plurality of luminaires installed in a lighting space, comprising:
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detecting a position of a person in the lighting space and a direction that the person is facing; and performing lighting control of the luminaires to illuminate a wall that is located in front of the person if a distance between the person and the wall is a specified distance or less, and performing lighting control of the luminaires to reduce brightness at positions in the lighting space that are farther from the position of the person if the distance between the person and the wall is larger than the specified distance. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification