JP2006324138A - Lighting system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting system wherein illumination can be used for various purposes such as illuminating an entire room as a matter of course, and also illuminating a separate spot. <P>SOLUTION: First light sources 5 comprising a plurality of LED light sources are disposed in a rectangular column shape along the fringe of a rectangular conference table 2 installed in the center of the room. Each LED light source has a light distribution in which a beam angle each is not more than 50 degrees when luminous intensity L in the direction of zero degree becomes (1/2) x L. Second light sources 7 to mainly illuminate a wall surface 6 are disposed in the peripheral fringe part of the ceiling surface of the room, and the second light sources are lighted to brightly illuminate the wall surface 6 and its surroundings. In addition, as to the first light sources, the LED light sources above a person 4 staying in the room are 100% lighted, and the other LED light sources are 50% controlled and lighted. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an illumination device including a plurality of first light sources suitable for spot illumination and a second light source that performs wall surface illumination.

Conventionally, two human body detection sensors with different detection ranges at the central part and the peripheral part have been provided, and when each human body detection sensor detects a human body, a lighting load such as a lamp is lit for a certain period of time to detect the central part. A certain time when the detection sensor detects a human body is set to be longer than a certain time when a human body detection sensor that detects a peripheral part detects a human body, and one of the human body detection sensors detects a human body. , A lighting device that provides a comfortable lighting environment by turning on the lighting load with low luminance when the other human body detection sensor detects a human body is known (for example, see Patent Document 1). ).
Japanese Patent Laid-Open No. 2000-10052

  However, the thing of patent document 1 controls one illumination load by high-intensity lighting and low-intensity lighting by the human body detection of two human body detection sensors, for example, even if it can illuminate the whole room It was not possible to spot illuminate individual sites.

  Thus, the present invention can illuminate the entire room as well as spot illumination of individual parts, for example, multi-purpose illumination such as spot illumination of only the occupants and spot illumination of only the presenter. A lighting device that can be used for the above is provided.

The present invention includes a plurality of first light sources arranged in a row on the center side of the ceiling surface, each having a light distribution with a beam angle of 50 degrees or less when the luminous intensity becomes ½, The illumination device includes a second light source that is arranged on the peripheral edge or the wall surface and mainly illuminates the wall surface, and a control unit that controls light emission of the plurality of first light sources and the second light source.
That is, since the plurality of first light sources have a light distribution with a beam angle of 50 degrees or less when the luminous intensity becomes ½, spot illumination can be performed by selectively turning on the light sources. Moreover, the illumination of the whole room can be performed by lighting together the plurality of first light sources and second light sources.

  According to the present invention, it is possible to spot-illuminate individual parts as well as to illuminate the entire room. For example, it is versatile to illuminate only a person in the room or spot-illuminate only a presenter. Can be used for Further, incidental effects such as improvement of concentration by spot illumination and power saving can be obtained by spot illumination only at necessary places.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view of a room 1 as seen from the ceiling. A rectangular conference table 2 is installed in the center of the room 1, and a number of chairs 3 are arranged on the table 2. A number of occupants 4 are sitting on a chair around the table 2.

  A first light source 5 composed of a plurality of LED light sources is arranged in a rectangular row along the edge of the table 2 on the center side of the ceiling surface of the room 1. Each LED light source is composed of a plurality of LED elements, and each has a light distribution characteristic as shown in FIG. 3 in which the beam angle is 50 degrees or less when the luminous intensity L in the direction of 0 degrees is 1/2 · L. ing. The first light source 5 is not limited to an LED light source, and a discharge lamp such as a light bulb or a fluorescent lamp can also be used.

  A second light source 7 that mainly illuminates the wall surface 6 is disposed at the peripheral edge of the ceiling surface of the room 1. In other words, a plurality of second light sources 7 are arranged in a rectangular shape along the periphery of the ceiling surface, and each illuminates the adjacent wall surface 6 and its periphery. A discharge lamp such as a fluorescent lamp is most suitable as the second light source 7, but other light bulbs, LED light sources, EL light sources using EL elements, and the like can also be used. Note that the second light source 7 may be disposed on the wall surface 6 along the periphery of the ceiling surface.

  FIG. 2 is a block diagram showing a configuration of a control unit that controls the lighting of the plurality of first light sources 5 and the second light sources 7, and includes n LED light sources 5-1, 5-2,. Lighting control is performed by the lighting circuits 11-1, 11-2,. Further, dimming circuits 12-1, 12-2,... Are provided corresponding to the lighting circuits 11-1, 11-2,..., And dimming from the dimming circuits 12-1, 12-2,. The lighting circuits 11-1, 11-2,... Control the LED light sources 5-1, 5-2,.

The m light sources 7-1, 7-2,... That are the second light sources 7 are controlled to be lit by the lighting circuits 13-1, 13-2,.
The lighting circuits 11-1, 11-2,..., The dimming circuits 12-1, 12-2,..., The lighting circuits 13-1, 13-2,. 14 is controlled.

Corresponding to the LED light sources 5-1, 5-2,..., Human sensors 15-1, 15-2,. Voice recognition sensors 16-1, 16-2,... For recognizing the voice of a person under the light source are arranged, and these human sensors 15-1, 15-2,. Detection signals from -2,... Are input to the control device.

  The control device 14 is preprogrammed with control in various conference modes. For example, in the first conference mode, the control device 14 uses the lighting circuits 13-1, 13-2,. 1, 7-2, etc. are lit to illuminate the wall 6 and its surroundings brightly, and the LED light sources 5-1, 5-2,. The whole room 1 is illuminated brightly.

  Each LED light source 5-1, 5-2,... Is set to a beam angle of 50 degrees or less when the light intensity L in the direction of 0 degrees becomes 1/2 · L. The entire central portion of the room 1 can be brightly illuminated by turning on all the LED light sources 5-1, 5-2,. In this conference mode, the detection signals from the human sensors 15-1, 15-2,... And the voice recognition sensors 16-1, 16-2,. It is also possible for the lighting circuits 11-1, 11-2, ... to dimm the LED light sources 5-1, 5-2, ... using the dimming circuits 12-1, 12-2, ... The brightness of the entire room can be adjusted.

  Further, in the second conference mode, the control device 14 turns on the light sources 7-1, 7-2,... By the lighting circuits 13-1, 13-2,. In addition, the LED light sources 5-1, 5-2,... Are dimmed to 50%, for example, by the lighting circuits 11-1, 11-2,. It is not limited to 50%. In this conference mode, the capture of detection signals from the voice recognition sensors 16-1, 16-2,. And the detection signal from human sensor 15-1, 15-2, ... is taken in, and the LED light source corresponding to the human sensor which detected presence of a person is switched to 100% lighting.

  In this way, as shown in FIG. 4, only the LED light source (light source indicated by hatching in the figure) above the occupant 4 is turned on 100%. Since the surrounding LED light source is dimmed to 50%, the occupant 4 is spot-lit by the 100% LED light source. By performing such spot illumination, the concentration of the occupants 4 during the meeting can be improved.

  In the third conference mode, the control device 14 lights the light sources 7-1, 7-2,... By the lighting circuits 13-1, 13-2,. To do. Further, the LED light sources 5-1, 5-2,. And the detection signal from human sensor 15-1, 15-2, ... is taken in, and the LED light source corresponding to the human sensor which detected presence of a person is lighted 100%. In this conference mode, the detection signals from the voice recognition sensors 16-1, 16-2,.

  Thus, the LED light source on the place where the occupant 4 does not exist is in the off state, and the spot illumination can be performed more effectively by turning on only the LED light source on the occupant 4 100%. The concentration of the occupant 4 during the meeting can be further improved. Moreover, since the LED light source on the place where the occupant 4 does not exist is turned off, power saving can be achieved.

  Further, in the fourth conference mode, the control device 14 turns on the light sources 7-1, 7-2,... By the lighting circuits 13-1, 13-2,. To do. Further, the LED light sources 5-1, 5-2,. In this conference mode, the capturing of detection signals from both the human sensors 15-1, 15-2,... And the voice recognition sensors 16-1, 16-2,.

  Therefore, since the detection signals from the human sensors 15-1, 15-2,... Are taken in, if there are occupants 4, an LED light source corresponding to the human sensor that detects the presence of a person is used, for example. Turn on 50%. It is not limited to 50%. Further, the detection signals from the voice recognition sensors 16-1, 16-2,... Are validated, and the LED light source corresponding to the voice recognition sensor that has recognized the voice is turned on 100%.

  Thus, the LED light source on the place where the occupant 4 does not exist is in the off state, and only the LED light source above the occupant 4 is turned on by 50%. Further, only the LED light source above the occupant who utters a voice such as a speech is turned on 100%. Thereby, strong spot illumination can be performed and emphasized with respect to the occupant who utters voices, such as a statement. Therefore, it is very suitable for presentations and discussions.

  In the fifth conference mode, the control device 14 turns on the light sources 7-1, 7-2,... By the lighting circuits 13-1, 13-2,. To do. Further, the LED light sources 5-1, 5-2,. In this conference mode, the detection signals from the human sensors 15-1, 15-2,.

  Accordingly, at this time, only the detection signals from the voice recognition sensors 16-1, 16-2,... Are taken in, and when the occupant 4 makes a voice, an LED light source corresponding to the voice recognition sensor that recognizes the voice is provided. Turn on 100%. Therefore, strong spot illumination can be performed and emphasized for the occupants who utter speech such as speech. Therefore, this case is suitable when a lecture is given using a projector. In addition, if the LED light source is dimmed to about 50%, the present invention can be applied to a presentation or a discussion.

  In each conference mode described above, the light sources 7-1, 7-2,... Are always turned on. However, by turning off the light sources 7-1, 7-2,. You can also. In this way, the entire room is darkened, and only a specific person is spot-lit, which is suitable for a lecture or the like using a projector, for example. In this case, the light sources 7-1, 7-2,... Are simply turned on and off by the lighting circuits 13-1, 13-2,. However, in this way, the brightness of the room 1 can be controlled more finely.

  In this embodiment, a plurality of LED light sources constituting the first light source are arranged in a rectangular row along the edge of the rectangular conference table 2 on the center side of the ceiling surface. Although described above, the present invention is not necessarily limited thereto, and may be arranged in various shapes of rows depending on various uses, such as an elliptical row shape and a circular row shape.

The top view which looked at the room which has arrange | positioned the illuminating device which concerns on one embodiment of this invention from the ceiling side. The block diagram which shows the control part structure of the illuminating device which concerns on the same embodiment. The figure which shows the light distribution characteristic of the LED light source used for the illuminating device which concerns on the embodiment. The top view which looked at the room which shows the state illuminated with the 1st light source of the illuminating device which concerns on the embodiment from the ceiling side.

Explanation of symbols

  5 (5-1, 5-2,...) ... first light source (LED light source), 6 ... wall, 7 (7-1,7-2, ...) ... second light source, (11-1,11-2) , ...) ... lighting circuit, (12-1, 12-2, ...) ... dimming circuit, (13-1, 13-2, ...) ... lighting circuit, 14 ... control device.

Claims (1)

A plurality of first light sources arranged in a row on the center side of the ceiling surface, each having a light distribution with a beam angle of 50 degrees or less when the luminous intensity becomes ½,
A second light source disposed on the peripheral edge or wall surface of the ceiling surface and mainly illuminating the wall surface;
Control means for controlling light emission of each of the plurality of first light sources and the second light source;
An illumination device comprising:

Images