JPH02201803A - Lighting equipment - Google Patents

Abstract

PURPOSE:To obtain a desired light distribution characteristic corresponding to an installation place to make illumination of a road surface, etc. effective by installing a reflector to reflect the light from a lamp to the side direction under a lamp installed at the body of a lighting equipment and passing downward lights from a plurality of holes made in the reflector. CONSTITUTION:A cover 2 is mounted on the lower surface of the upper body 1 constituting the flood light of a lighting equipment, and an upper reflector (an equipment body) 3 is arranged in the flood light body and a lamp 4 is mounted under that. A lower reflector 5 formed in a shape of a triangular roof is installed and a plurality of holes are made in the reflector 5. The light starting upward from the lamp 4 is reflected in the side direction of the lamp body by means of the reflector 3 as shown by an arrow a, and the light started downward is made to be reflected in the side direction of the lamp body as shown by an arrow b, and concurrently, irradiated to the lower surface of the lamp body after passing through the hole 9 such that the light runs in the direction shown by arrow c so that the light distribution characteristic of the lower side is made as desired corresponding to the installation place of the lighting equipment.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a lighting device, and particularly to a pedestrian light for street illumination intended for pedestrians.

[Prior Art] Various light sources such as incandescent light sources, mercury lamps, and discharge lamps such as fluorescent tubes are used as light sources for pedestrian lights. In addition, installation of pedestrian lights depends on the location, height, width of the sidewalk,
Different types of installations are used depending on the situation, depending on the positional relationship with the roadway, etc. It is desirable to take into account the type and installation of such light sources, and to use each installation in an optimal light distribution condition depending on the location. In order to adjust such light distribution characteristics, a prism globe or the like using a prism has conventionally been attached to the underside of a pedestrian light.

[Problem to be solved by the invention] In the conventional pedestrian lights for street lighting using prism globes, etc., the type and mounting of the light source cannot be used with optimal light distribution characteristics depending on the location. Futa.

The present invention has been made in view of the above-mentioned drawbacks of the prior art, and it is possible to easily obtain desired light distribution characteristics with a simple structure, and to illuminate streets in an optimal state depending on the type and installation of the light source, etc. The purpose is to provide a possible street lighting device.

[Means for Solving the Problems] In order to achieve the above object, the lighting device according to the present invention includes a device body, a lamp provided in the device body, and a light source that directs light from the lamp to the lower side of the lamp. It is equipped with a reflecting plate that reflects light in a direction, and the reflecting plate has a plurality of holes so that light can be transmitted downward.

[Operation] The light from the lamp is reflected by the reflector plate and illuminates the side surface of the lamp body, and also illuminates the lower surface of the lamp body through the hole in the reflector plate. Light distribution characteristics can be obtained depending on the shape, number, aperture ratio, etc. of the holes in the reflector.

[Example] FIG. 1 is a schematic perspective view of a lighting device according to the present invention. A transparent cover 2 is attached to the lower surface of an upper main body 1 constituting a lamp body. The lamp body is provided with an upper reflector (apparatus main body) 3, and a lamp 4 is attached to the lower side thereof. In this embodiment, one U-shaped single-cap fluorescent lamp (compact fluorescent lamp) is provided as the lamp 4. A lower reflector 5 having a triangular roof shape is provided below the lamp 4. This reflector 5
・A plurality of holes 9 are formed.

The light emitted upward from the lamp 4 is reflected by the upper reflecting plate 3 toward the side surface of the lamp body as indicated by arrow a.

The light emitted downward from the lamp 4 is reflected by the lower reflecting plate 5 toward the side surface of the lamp as shown by arrow C, and is transmitted through the hole 9 of the reflecting plate 5 as shown by arrow C to illuminate the lower surface of the lamp.

By arranging the lower reflector 5 below the lamp in a centrally symmetrical manner, both sides of the lamp can be uniformly illuminated.

The ratio of light distribution in the side direction and the bottom direction of the lamp body is determined by the inclination angle of the lower reflector 5, the curved shape of the reflecting surface, the density and shape of the holes 9, etc. The shape of the light distribution characteristic of such a lighting device is as shown in FIG. 4, for example.

For example, as shown in FIG. 2, the illumination device 7 having the above configuration has
It is attached to the pillar 6 and used as a pedestrian light. In this case, the type of lamp 4, installation of the lighting device, height, road condition, etc.
In order to determine the optimal orientation characteristics based on the spacing between the pillars, etc., and obtain such optimal light distribution characteristics, the mounting angle of the reflector 5,
The size, shape, density, etc. of the holes 9 are selected.

Figure 's3 is a sectional view of another embodiment of the present invention.

In this embodiment, two U-shaped monolithic gold fluorescent lamps 4 used in the embodiment shown in FIG. 1 are arranged symmetrically on the left and right. The upper reflector 3 and the lower reflector 5 are integrally formed corresponding to the left and right lamps 4, and are provided separately on the left and right. 8 is a stabilizer. Other configurations, effects, etc. are the same as those of the previous embodiment.

Even with this configuration, the light from the lamp can be dispersed in an appropriate light distribution in the side and bottom directions of the lamp body by the action of the lower reflector.

[Effects of the Invention] As explained above, in the present invention, since a reflector having a plurality of holes is provided at the lower part of the lamp, the density (opening ratio), position, and size of the holes in the reflector are By appropriately selecting the shape and mounting angle of the reflecting plate, the shape of the reflecting surface, etc., desired light distribution characteristics can be easily obtained with a simple structure. Therefore, when used as a pedestrian light for street lighting, etc., the type and installation of the light source will depend on the installation location.
The road surface can be illuminated with optimal light distribution characteristics according to height, road and surrounding conditions, etc.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view of an embodiment of the lighting device according to the present invention, FIG. 2 is an explanatory diagram of the usage state of the lighting device according to the present invention,
FIG. 3 is a sectional view of another embodiment of the lighting device according to the present invention;
FIG. 4 is an explanatory diagram of the light distribution shape of the lighting device according to the present invention. DESCRIPTION OF SYMBOLS 1... Upper body, 2... Transparent cover 3... Upper reflector, 4... Lamp, 5... Lower reflector, 9...
Hole.

Claims (1)

[Claims] A device body, a lamp provided on the device body, and a reflector plate below the lamp that reflects the light from the lamp in the side direction, and the reflector plate has a plurality of holes and reflects the light downward. A lighting device characterized by being transparent.