JPH0364806A - Luminaire having dimming louver - Google Patents

Abstract

PURPOSE:To change a glare prevention angle and eliminate the necessary for changing the arrangement of a luminaire in response to the arrangement of OA equipments or the like by providing a louver having multiple louver pieces with the predetermined spaces, and adjusting the transparency of the desirabe louver piece among the louver pieces. CONSTITUTION:Two straight tube type fluorescent lamps 3 are installed to the inside of a reflecting material 2 of a luminaire main frame 1 in box. A louver 4 provided under the light sources 3 has multiple louver pieces with the predetermined spaces and is formed so that the transparency of the disirable louver piece among the louver pieces can be adjusted, and the glare having different angles can be prevented with one liminaire by adjusting the transparency of the desirable louver piece. The louver 4 consists of, for example, liquid crystal dimming panels, and the transparency of the dimming louver is changed to prevent the glare having different angles by adjusting the voltage of the dimming louver. The glare can be prevented easily without changing the arrangement of the luminaire.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in a lighting fixture having a dimming louver, which is mounted on a ceiling surface of an office or the like.

[Conventional technology]

Conventionally, in order to prevent glare, lighting fixtures that are installed on the ceiling of offices where OA type equipment is installed have a louver located on the underside of the light source that is installed inside a reflector. Louvers are used to cut glare, and when adjusting brightness, the light source is dimmed using a dimmer.

[Problem to be solved by the invention]

However, if the brightness of the louver or light source is adjusted using a dimmer, the structure would be complicated and the price would be high.

Furthermore, according to Louva, the angle to prevent glare is fixed; for example, if you change the arrangement of desks, etc. inside a room, depending on the arrangement of office equipment, you may have to change the arrangement of lighting equipment to prevent reflections on the CRT. The disadvantage is that there are some things that cannot be done, and the work is time-consuming.

[Purpose of the invention]

The present invention has been invented in view of the above points, and it is possible to change the glare prevention angle, and there is no need to change the arrangement of lighting equipment depending on the arrangement of OA equipment, etc., and it can be implemented at low cost. An object of the present invention is to provide a lighting fixture having a light louver.

[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, along with installing a reflector inside the lighting equipment,
A light source is mounted inside the reflector, and a louver is provided below the light source.

Further, the louver is configured such that a plurality of louver pieces are arranged at predetermined intervals, and the transparency of a desired one among the louver pieces can be adjusted.

Then, by adjusting the desired transparency of the louver pieces, glare from different angles can be prevented with one lighting fixture.

In addition, in item 2, the dimmer louver is configured with a liquid crystal dimmer panel, and by adjusting the voltage of the dimmer louver, the transparency of the dimmer louver can be changed to prevent glare from different angles. be.

[Effect]

According to the lighting equipment having the light control panel having the above structure, the louver is configured such that a plurality of louver pieces are arranged at predetermined intervals, and the transparency of a desired one of the louver pieces can be adjusted. Therefore, the glare prevention angle can be varied, and it can be easily implemented by changing the arrangement of OA equipment, etc., without changing the arrangement of lighting equipment.

〔Example〕

The invention will now be described with reference to FIGS. 1 and 2. In the figure, reference numeral 1 denotes a lighting fixture main body, which is, for example, box-shaped. 2 is a reflector mounted inside the lighting device body 1; 3 is a straight tube-shaped fluorescent lamp mounted inside the reflector 2;
It is fully installed and configured. Reference numeral 4 denotes a louver which is arranged under the light source, and a plurality of louver pieces are arranged at predetermined intervals, and among the louver pieces, a desired one has transparency. It is arranged so that it can be adjusted. By adjusting the transparency of the desired louver pieces, it is possible to prevent glare from different angles with a single lighting fixture.

Further, the louver may be a liquid crystal light control panel, for example, and by adjusting the voltage of the light control louver, the transparency of the light control louver can be changed to prevent glare at different angles.

The light control panel used has a structure in which, for example, two electrode substrates sandwich a liquid crystal whose long axes of molecules are aligned parallel to the substrates.

Reference numeral 5 denotes a ballast mounted inside the lighting fixture body 1.

〔Effect of the invention〕

As described above, the present invention is configured such that a plurality of louver pieces are arranged at predetermined intervals on the lower surface of the light source, and the transparency of a desired one of the louver pieces can be adjusted. By adjusting the transparency of the piece, the glare prevention angle can be varied, and there is a unique advantage that glare can be easily prevented by changing the arrangement of OA equipment, etc., without changing the arrangement of lighting equipment.

[Brief explanation of drawings]

FIG. 1 is a side view of a lighting fixture having a dimming louver according to the present invention, and FIG. 2 is a perspective view of the dimming louver in FIG. 1. 1...Lighting equipment body 2...Reflector 3...Fluorescent lamp 4...Louver 5...Ballast

Claims (1)

[Claims] 1. In a lighting fixture in which a light source is mounted inside a reflector and has a louver located below the light source, the plurality of louver pieces constituted by the light control panel are arranged in a predetermined position. A dimming device characterized in that it is configured to prevent glare at different angles with a single lighting device by arranging the louver pieces at intervals and adjusting the transparency of a desired one among the same louver pieces. Lighting equipment with louvers. 2. The dimming louver is configured with a liquid crystal dimming panel, and by adjusting the voltage of the synchronized dimming louver, the transparency of the dimming louver is changed to prevent glare at different angles. A lighting fixture having a dimming louver according to claim 1.