JP2001093303A - Task ambient luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a task ambient luminaire which is improved in its workability. SOLUTION: This task ambient luminaire comprises a dotted light source 3, a task lighting device optically opposed to the light source and containing a first light control member 4 having a 1/2 beam angle of 20 degrees or less, an ambient lighting device optically opposed to the light source and containing a second light control member 2 having a 1/2 beam angle of 40 degrees or more and a luminaire body 5 capable of storing both the task lighting device and the ambient lighting device so that the opening end of the second light control member is located almost flat with the opening end of the first light control member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to task / ambient lighting mainly used in offices, stores, and the like.

[0002]

2. Description of the Related Art Conventionally, task ambient lighting is used as an office lighting method. This system divides the room into a place where work is performed, such as a desk top, and its surroundings.Ambient lighting and indirect lighting that can maintain relatively low illuminance called ambient lighting are provided on the desk top where no work is performed. Is equipped with a separate task light and turns on the task lighting only on the desk (upper surface) where the work is performed, thereby reducing the lighting power used in the entire room.

[0003] In the ambient lighting, a fluorescent lamp or the like is installed on a ceiling surface in order to improve the uniformity of illuminance in a room. As the task light, a lighting device is used which is placed on each desk surface to illuminate the desk surface, or provided with a light source and a shade at the tip of an arm provided at an end of the desk. In addition, there is a lighting device provided with an indirect lighting device on the upper surface for ambient lighting at the upper portion of the desk and a task light for desk lighting on the lower surface.

As described above, by providing the task lamp on each desk, it is possible to secure the illuminance on the desk surface even when the desk is moved.

[0005]

However, for this reason, there is a need for a space for placing a task light on the surface of the desk, and at the desk where the arm of the task light is adjacent, it may be an obstacle to a working person. However, there was an inconvenience caused by placing a task light. In addition, when each of the task light and the ambient lighting fixture is installed on the ceiling, it is necessary to process the ceiling for each fixture, so that it may take time to construct the ceiling.

[0006] It is an object of the present invention to provide a task / ambient lighting fixture in which the workability of the fixture is improved.

[0007]

According to a first aspect of the present invention, there is provided a point light source and a first light control member which is disposed optically facing the light source and has a half beam angle of 20 ° or less. A task illumination device comprising: a linear light source; an ambient illumination device comprising a second light control member optically opposed to the light source and having a half beam angle of 40 ° or more; The second
A lighting fixture main body capable of accommodating both the task lighting device and the ambient lighting device so that the opening end of the light control member is positioned substantially flush with the opening end of the first light control member. It is characterized by the following.

According to a second aspect of the present invention, in the task / ambient lighting device according to the first aspect, the first light control member is relatively movable with respect to the point light source.

According to a third aspect of the present invention, the task / ambient luminaire task illuminating device and the ambient illuminating device according to the first aspect of the present invention each have a control device capable of individually performing lighting control or dimming control. It is characterized by the following.

According to the first aspect of the present invention, the first light control member and the second light control member, which are light control members having different light distributions, are provided in a common fixture body capable of accommodating both the task lighting device and the ambient lighting device. Since the respective open ends are arranged on substantially the same plane, a desired light distribution can be easily obtained, and the workability of the tool can be improved.

According to the second aspect of the present invention, since the first light control member can move in the direction of the center luminous intensity of the task lighting device, it is possible to adjust the direction according to the position of the desk to be illuminated with respect to the present lighting fixture.

According to the third aspect of the present invention, since the ON / OFF control and the dimming control of each light source can be independently performed, the ambient lighting device and the individual task lighting devices can be controlled according to the indoor use conditions. is there

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a task / ambient lighting apparatus according to an embodiment of the present invention.

FIG. 1 is a schematic side view of a task / ambient lighting fixture showing an embodiment of the present invention, and FIG. 2 is a schematic bottom view of the same. In the figure, a task lamp as a task lighting device is provided with a point-like light source, for example, an incandescent light bulb 3, disposed optically opposite to the light source 3 and having a half beam angle of 20.
1 ° or less. That is, the task lights illuminate the individual desk tops,
It is necessary to suppress the influence of the illuminance on the desk surface of an adjacent desk depending on the lighting state (ON / OFF) of one task light, and the light distribution needs to be narrow.

Therefore, this light distribution needs to have an angle having a luminous intensity value of 1/2 of the central luminous intensity not more than 1/2 (that is, the 1/2 beam angle is not more than 20 °). In addition,
The light source may be a halogen bulb, and the reflecting plate 4 as the first light control member has a specular reflecting surface and a parabolic shape so as to illuminate a local area more.

The ambient illuminator includes a linear light source, for example, a fluorescent lamp 1 and a second light control member 2 disposed optically opposite to the light source 1 and having a half beam angle of 40 ° or more. It is comprised including. That is, since the ambient lighting needs to increase the illuminance uniformity of the whole room, it is effective to use a light having a wide light distribution, and the angle having a luminous value of の of the luminous intensity immediately below the center is 40 ° or more (ie, (1/2 beam angle is 40 ° or more). The reflection plate serving as the second light control member 2 is white painted and has a wide light distribution as general illumination.

The opening end 2a of the second light control member 2 is
The first light control member 4 is disposed so as to be located substantially on the same plane as the opening end 4a. If the opening end 4a is arranged more deeply on the appliance body side than the opening end 2a, the first light control member 4 designed to obtain the light distribution as described above is obtained.
Is reflected by the opening end 2a1 of the second light control member 2.
In some cases, light may be blocked, and a desired light distribution may not be obtained.

On the other hand, if the opening end 2a is disposed at a position closer to the instrument body than the opening end 4a, the light reflected by the second light control member 2 Open end 4a
In some cases, light may be blocked, and a desired light distribution may not be obtained.

Therefore, the first light control member 4, which is a light control member of different light distribution, is provided on the common fixture body 5 capable of accommodating both the task lighting device and the ambient lighting device.
In order to obtain a desired light distribution by arranging the second light control member 2 and the second light control member 2, it is appropriate that the opening ends 4a and the opening ends 2a of both of them are substantially on the same plane.

Further, when the fixture is installed, the fixture main body 5 including the task lighting device and the ambient lighting device is mounted on the ceiling surface, so that the work can be performed with the feeling of mounting one lighting fixture, so that the workability is improved. I do.

In general, each light source is a fluorescent lamp (including a compact fluorescent lamp and a bulb-type fluorescent lamp), an incandescent lamp (including a halogen lamp and a krypton lamp), and other light sources. Anything is fine. As each light control member, a reflection plate, a louver, and a prism are generally used, but any other member that converts light emitted from a light source in a required direction may be used.

Further, the first light control member 4 having a narrow light distribution used as a task light can be made movable in the direction of the central luminous intensity, so that the direction can be changed depending on the position of the desk to be illuminated with respect to the present luminaire. It becomes possible to match.

Further, since the ON / OFF control and the dimming control of each of the light sources 1 and 3 can be independently performed, the ambient lighting and the individual task lights can be controlled according to the indoor use conditions.

[0024]

According to the first aspect of the present invention, the first light control member and the second light control member, which are light control members having different light distributions, are provided in a common fixture body capable of accommodating both the task lighting device and the ambient lighting device. Since the respective opening ends of the light control members are arranged so as to be substantially on the same plane, a desired light distribution can be easily obtained, and the workability of the appliance can be improved.

According to the second aspect of the present invention, since the first light control member can move in the direction of the central luminous intensity of the task lighting device, it is possible to adjust the direction according to the position of the desk to be illuminated with respect to the present lighting fixture. .

According to the third aspect of the present invention, each light source is turned on / off.
Since the control and the dimming control can be performed independently, the ambient lighting device and the individual task lighting devices can be controlled according to indoor use conditions.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a task / ambient lighting device showing an embodiment of the present invention.

FIG. 2 is also a schematic bottom view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Linear light source 2 ... 2nd light control member 3 ... Point light source 4 ... 1st light control member 5 ... Lighting fixture main body

Claims (3)

[Claims] 1. A task lighting device comprising: a point light source; a first light control member disposed optically opposite to the light source and having a half beam angle of 20 ° or less; and a linear light source. Is disposed optically opposite to the light source, and has a half beam angle of 40 °.
An ambient lighting device including the second light control member described above; and a task lighting device and a task light device, such that an opening end of the second light control member is located substantially on the same plane as an opening end of the first light control member. A lighting fixture body capable of accommodating the ambient lighting device together; and a task ambient lighting fixture. 2. The task / ambient lighting device according to claim 1, wherein the first light control member is movable relative to the point light source. 3. The task / ambient lighting device according to claim 1, wherein the task lighting device and the ambient lighting device each have a control device that can perform lighting control or dimming control separately. .