JPH03110708A - Light control reflector for lighting - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an improvement in a dimming reflector for lighting that is incorporated into a lighting fixture that is mounted on a ceiling surface of an office or the like.

[Conventional technology]

The purpose of lighting differs depending on where it is used, such as a general office, an office equipped with OA equipment, or a reception room. In general offices, it is necessary to illuminate at a predetermined brightness, and in offices equipped with OA equipment, it is necessary that the light from the light source of the lighting equipment not be reflected on the CRT.

By the way, in the past, lighting fixtures used in general offices, offices equipped with OA equipment, reception rooms, etc., were designed and used separately with light distribution suitable for each purpose. There is.

Lighting equipment used in general offices, for example, has a reflector with a white internal surface inside the lighting equipment itself, and a fluorescent lamp is attached to the inner surface of the reflector to create a bright overall atmosphere. I am doing the lighting.

In addition, in offices where office automation equipment is installed, in order to prevent glare, a louver is installed below the light source attached to the inside of the reflector, and the louver allows the light from the light source of the lighting equipment to be It is constructed to avoid reflections, and when adjusting the brightness, the light source is dimmed using a dimmer.

Furthermore, lighting fixtures used in reception rooms are constructed by providing, for example, an acrylic cover on the lower surface of the light source in order to provide relatively soft illumination.

[Problem to be solved by the invention]

However, as mentioned above, if you design and use lighting fixtures with structures suitable for each purpose separately, it will take time to design, and the manufacturing will be difficult because there will be a large number of models. If the arrangement is changed, the disadvantage is that the arrangement of the lighting equipment must also be changed.

[Purpose of the invention]

The present invention was invented in view of the above points.

A lighting fixture configured to have a dimming panel placed in front of a reflective substrate, and by adjusting the voltage applied to the synchronized dimming panel, the reflectance of the dimming panel can be changed to obtain different light distributions with a single lighting fixture. The purpose is to provide a reflector for

[Means for the invention to solve the problem]

In order to solve the above problems, the present invention has the following configuration. In other words, a light control panel is placed in front of a reflective substrate that is used inside a lighting fixture.

By changing the voltage applied to the tunable dimmer panel, the reflectance of the dimmer panel is changed, and a single lighting fixture is configured to obtain different light distributions.

[Effect]

When a lighting control reflector with the above structure is installed in a lighting fixture and the voltage applied to the light control panel is adjusted, the reflectance of the light control panel changes, making it possible to obtain different light distributions with a single lighting fixture. To provide lighting according to a purpose with a single lighting fixture without preparing a large number of lighting fixtures.

〔Example〕

The present invention will now be described with reference to FIGS. 1 and 8. In the figure, reference numeral 1 denotes a dimming reflector for illumination, and this reflective substrate is made of, for example, aluminum. Reference numeral 2 denotes a dimming panel disposed on the front surface of the reflective substrate 3 of the dimming reflector 1 for lighting, and is configured so that the reflectance of the dimming panel can be changed by adjusting the applied voltage. be.

The light control panel 2 has a structure in which, for example, a liquid crystal whose long axes of molecules are arranged parallel to the substrates is sandwiched between two electrode substrates.

For example, as shown in FIG. 2, the above-mentioned lighting control reflector is used by being mounted inside a lighting fixture main body 4 having a box-like structure. Reference numeral 5 denotes a light source mounted inside the dimming reflector 1 for illumination, and is constructed by mounting, for example, a 40 watt fluorescent lamp.

Reference numeral 6 denotes a ballast mounted inside the lighting fixture main body 4.

Further, as shown in FIG. 3, if the opening angle of the lighting control reflector 1 is made small and the applied voltage of the light control panel 2 is adjusted, the reflectance of the light control panel changes, and the light distribution is changed to that shown in FIG. Fifth
It can be changed sequentially as shown in the figure.

Further, as shown in FIG. 6, when the opening angle of the lighting control reflector 1 is increased and the applied voltage of the light control panel 2 is adjusted, the reflectance of the light control panel changes, and the light distribution is changed from that shown in FIGS. It can be changed sequentially as shown in FIG.

〔Effect of the invention〕

As described above, the present invention is configured such that the reflectance of the light control panel is changed by disposing the light control panel on the front surface of the reflective substrate and adjusting the voltage applied to the light control panel.
It has the unique advantage of being able to obtain different light distributions with a single lighting fixture and providing illumination according to the purpose with a single lighting fixture without having to prepare a large number of lighting fixtures.

[Brief explanation of drawings]

Fig. 1 is a side view of a dimming reflector for lighting according to the present invention;
The figure is a side view showing the dimming reflector for lighting in Figure 1;
Figure 3 is an example diagram of a dimming reflector for lighting, Figures 4 and 5.
The figure is an explanatory diagram showing the change in light distribution in Figure 3, Figure 6 is an illustration of another example of the dimming reflector for lighting, and Figures 7 and 8 are diagrams showing the change in light distribution in Figure 6. It is an explanatory diagram. 1... Lighting dimming reflector 2... Light control panel 3... Reflective board 4... Lighting equipment body 5... Fluorescent lamp 6... Ballast Figure 3 and Figure 4 Figure 5

Claims (1)

[Claims] 1. In a lighting control reflector having a light source mounted therein, a light control panel is disposed in front of the reflective substrate of the lighting control reflector, and the control panel is 1. A dimming reflector for lighting, characterized in that the reflectance of the dimming panel is changed by adjusting the applied voltage so that different light distributions can be obtained with a single lighting fixture.