JPH05242706A - Variable light distribution type lighting system - Google Patents

Abstract

PURPOSE:To enable variable light distribution at will for the purpose of illuminating parks and station squares by installing a plurality of reflective plates, whose lower faces are constituted into reflective faces, near the upper end of an illumination pole at freely variable angle and installing an luminaire under the plates. CONSTITUTION:A plurality of reflective plates 13 supported by a reflective plate supporting body 12 are installed neat the upper end of a hollow cylindrical illumination pole 11 in the way the installation angle can be changed freely. The angle of each reflective plate 13 can be set independently. The lower face of a reflective plate is composed as a reflective face using A or by applying a white paint. The distribution of light from the luminaire below can be changed corresponding to the purpose by changing the angle of the reflective plates 13 through a tensile body 14, a pulley 15, a hinge 17, and a motor 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of a variable light distribution type illumination device.

[0002]

2. Description of the Related Art Conventionally, with regard to lighting equipment used in parks, station squares, etc., it has been practiced to support and illuminate the lighting equipment near the upper end of the lighting pole also for decoration. For example, as shown in FIG. 6, a glass globe 3 formed by depositing a reflective film 2 on the inner surface of the upper half of the illumination pole 1 is supported, and a light source 4 is mounted inside the glass globe 3 for illumination. Is being implemented. As another structure, a lighting fixture main body having an opened lower surface is supported near the upper end of the lighting pole, a light source is mounted inside the lighting fixture main body, and illumination is performed with the same light source.

[0003]

By the way, as shown in FIG.
According to the structure having the round glass globe shown in and the main body of the luminaire whose lower surface is opened, it is possible to illuminate a certain range. However, lighting in a park or a plaza in front of a station may illuminate a narrow range or a wide range depending on the use, but there is a drawback that it is not possible to cope with this change in use. In particular, in a park or station square, for example, the left half may illuminate a narrow range and the right half may illuminate a wide range.

The present invention has been made in view of the above points, and it is an object of the present invention to provide a variable light distribution type illumination device capable of changing the light distribution according to the application.

[0005]

The present invention has the following constitution in order to solve the above problems. That is, the reflector support is provided near the upper end of the illumination pole. In addition, on the reflector support,
A plurality of reflectors each having a lower surface configured as a reflecting surface are configured to be variable in angle so that each reflector can independently set an angle. Then, the lighting device is arranged below the reflection plate, and the lower surface of the reflection plate is illuminated by a light source housed in the lighting device.

[0006]

According to the variable light distribution type illumination device having the above structure,
The light distribution can be easily changed by changing the angle of the reflector, and the desired light distribution can be obtained by setting the angle of each reflector independently. Lighting is possible depending on the application.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to FIGS. In the figure, reference numeral 11 denotes an illumination pole, which has a hollow circular shape, for example. Reference numeral 12 is a reflector support body supported near the upper end of the illumination pole, and 13 is a reflector support body 1.
2 is a plurality of reflectors supported by the reflectors, and the angle of the reflectors is variable. Further, the reflecting plate 13 is configured such that each reflecting plate 13 can set an angle independently. Further, the reflecting plate 13 has a lower surface as a reflecting surface. To form the lower surface of the reflection plate 13 as a reflection surface, it is made of aluminum or is painted white.

Reference numeral 14 is a tension member for varying the angle of the reflection plate 13, one end of which is supported on the upper wall surface of the reflection plate 13 and the other end of which is linked with the pulley 15. Reference numeral 16 is a motor for rotating the pulley 15. Reference numeral 17 is a hinge for forming the reflector 13 on the reflector support 12 so that the angle can be freely changed. Reference numeral 18 denotes an illuminating device which is arranged below the reflection plate 13 and has, for example, a high pressure discharge lamp accommodated therein.

As an example of illumination in a park or a plaza in front of a station, for example, as shown in FIGS. 1 to 3, a reflector is changed to obtain a desired light distribution. In FIG. 1, a plurality of reflectors are horizontally arranged and illuminate the periphery of the illumination pole relatively uniformly. In FIG. 2, the outer sides of a plurality of reflectors are changed upward so that a relatively wide range is illuminated around the illumination pole.
In FIG. 3, the angle of each reflector is changed, and the left half illuminates the far part including the far side, and the right half illuminates the right half of the illuminating pole.

[0010]

As described above, according to the present invention, a plurality of reflectors each having a lower surface as a reflecting surface are configured such that the angle of each reflector can be set independently so that the angle can be set independently. Therefore, it has a unique effect that a desired light distribution can be easily obtained and a park, a station square, etc. can be illuminated according to the use.

[Brief description of drawings]

FIG. 1 is a side view of a variable light distribution illumination device of the present invention.

FIG. 2 is a side view of the variable light distribution type illumination device of FIG. 1 when a reflector is changed.

FIG. 3 is a side view of the variable light distribution type illumination device shown in FIG.

FIG. 4 is a plan view of an essential part of FIG.

5 is a side view of the main part of FIG.

FIG. 6 is a side view of a conventional variable light distribution illumination device.

[Explanation of symbols]

 11 Illumination Pole 12 Reflector Support 13 Reflector 14 Tension 15 Pulley 16 Motor 17 Hinges

Claims (1)

[Claims] 1. A reflector support is provided in the vicinity of an upper end of an illumination pole, and a plurality of reflectors each having a lower surface as a reflection surface are provided on the reflector support and each reflector has an independent angle. The angle can be freely set so that it can be set, and the lighting equipment is arranged below the reflector, and the lower surface of the reflector is illuminated by the light source housed in the lighting equipment. A variable light distribution type lighting device.