JPH0721810A - Luminaire - Google Patents

Abstract

PURPOSE:To provide a luminaire by which desired light distribution up to a wide angle, a medium angle and a narrow angle can be obtained easily by a single luminaire and even bilaterally asymmetric light distribution can be obtained easily. CONSTITUTION:Angle adjusting tools 6 capable of specifying light distribution of a wide angle, a medium angle and a narrow angle are arranged in bilateral symmetry on both sides of a light source 3 installed in a luminaire body 1. A reflector 7 is supported with the angle adjusting tool 6, and an angle of one or both of reflectors 7 is adjusted, and light distribution is adjusted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of lighting equipment used in parks or station plazas.

[0002]

2. Description of the Related Art Conventionally, luminaires used in parks or station plazas have wide-angle light distribution, medium-angle light distribution, and narrow-angle light distribution depending on the conditions of the installation location of the lighting equipment. It is practiced to arbitrarily select and use a luminaire having a light distribution. By the way, conventionally, in order to change the light distribution of a lighting fixture into, for example, a wide angle, a middle angle, and a narrow angle, it is practiced to prepare a plurality of reflecting mirrors and attach the reflecting mirrors according to a desired light distribution. As another structure for controlling the light distribution, a structure in which a reflecting mirror is fixed and the position of a light source is changed to control the light distribution is implemented.

[0003]

By the way, according to the structure in which a plurality of reflecting mirrors described above are prepared and selected by light distribution and attached, it is necessary to prepare reflecting mirrors having a plurality of shapes. If it is fixed to the main body, there is a drawback that it takes time to replace it with a reflecting mirror having another light distribution. Further, with the structure in which the reflecting mirror is fixed and the position of the light source is variable, it is difficult to adjust the light distribution to an arbitrary one, and there is a drawback that the control of the light distribution is limited. Furthermore, there is a drawback that a dedicated reflector must be prepared to obtain asymmetrical light distribution.

The present invention has been made in view of the above points. It is possible to easily obtain a desired light distribution for a wide angle, a medium angle, and a narrow angle with a single luminaire, and asymmetric light distribution. It is an object of the present invention to provide a lighting fixture that can be easily obtained.

[0005]

The present invention has the following constitution in order to solve the above problems. In other words, the light source is mounted inside the lighting fixture main body having the lower surface opened, and the reflecting mirror is arranged around the light source. Angle adjusters capable of specifying wide-angle, medium-angle, and narrow-angle light distributions are arranged symmetrically on both sides of the light source in the longitudinal direction, and reflectors are arranged on the same angle adjusters.
The left and right reflectors are configured so that one or both angles can be adjusted. And a desired light distribution is obtained.

[0006]

According to the luminaire having the above structure, the reflectors are symmetrically arranged on both sides of the light source in the longitudinal direction, and the reflectors on the left and right sides adjust one or both angles to control the light distribution. Therefore, a single lighting fixture can obtain wide-angle, medium-angle, narrow-angle light distribution or asymmetrical light distribution.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to FIGS. 1, FIG. 2, and FIG. 10, 1 is a main body of the luminaire whose lower surface is opened, 2 is a socket fixed inside the luminaire main body 3, and 3 is a light source mounted in the socket 2. , For example, a high pressure discharge lamp of about 100 watts,
Reference numeral 4 denotes a support fixed to the inside of the luminaire main body 5, reference numeral 5 denotes a reflecting mirror support arranged symmetrically with respect to the support 4, and 6 denotes a reflecting mirror support 5 arranged so that the angle can be varied. As shown in FIGS. 4, 6 and 8, a plurality of positioning grooves are provided so that a wide angle, a middle angle and a narrow angle can be set. Reference numeral 7 denotes a reflector supported by the angle adjusting tool 6, which is arranged symmetrically with respect to the longitudinal direction of the light source. As shown in FIG. 3, the angle adjusting tool 6 is provided with an arc-shaped hole 8 and is configured to rotate about a rotation shaft 9. Reference numeral 10 denotes a translucent plate which is supported by the opening on the lower surface of the luminaire main body 1, and is made of acrylic, for example.

Next, the control of light distribution in the luminaire having the above structure will be described with reference to FIGS. The angle of the reflector 7 is changed by rotating the angle adjusters 6 on both sides of the light source. FIG. 8 shows a state when a narrow-angle light distribution is obtained, FIG. 6 shows a state when a medium-angle light distribution is obtained, and FIG. 4 shows a state when a wide-angle light distribution is obtained. 9 shows a narrow-angle light distribution, FIG. 7 shows a medium-angle light distribution, and FIG. 5 shows a wide-angle light distribution. Further, by arranging the reflector above the light source inside the luminaire main body, the light distribution in the longitudinal direction of the light source can be controlled.

Further, as shown in FIG. 10, one reflector centering on the light source and the other reflector may be laterally asymmetrical to obtain an asymmetric light distribution as shown in FIG.

[0010]

As described above, according to the present invention, the reflectors are arranged on both sides in the longitudinal direction of the light source so as to be bilaterally symmetrical and capable of changing the angle. Since the angle is adjustable and the light distribution is controlled, there is a unique effect that an arbitrary light distribution can be easily obtained with one lighting fixture and a simple structure.

[Brief description of drawings]

FIG. 1 is a side view of a lighting fixture of the present invention.

FIG. 2 is a front view of the lighting fixture of the present invention.

FIG. 3 is a partially enlarged front view of the lighting fixture of the present invention.

FIG. 4 is a partially enlarged front view showing wide-angle illumination of the luminaire of the present invention.

FIG. 5 is a light distribution diagram of the lighting fixture of FIG.

FIG. 6 is a partially enlarged front view showing medium-angle illumination of the lighting fixture of the present invention.

FIG. 7 is a light distribution diagram of the lighting fixture of FIG.

FIG. 8 is a partially enlarged front view showing narrow-angle illumination of the lighting equipment of the present invention.

FIG. 9 is a light distribution diagram of the lighting fixture of FIG.

FIG. 10 is a front view showing another embodiment of the lighting fixture of the present invention.

11 is a light distribution diagram of the lighting equipment of FIG.

[Explanation of reference numerals] 1 main body of lighting equipment 2 socket 3 light source 4 support tool 5 reflector support tool 6 adjusting tool 7 reflector 8 arcuate hole 9 rotation axis 10 translucent plate

Claims (1)

[Claims] 1. A luminaire in which a light source is mounted inside a luminaire main body having an opening on the lower surface, and a reflecting mirror is arranged around the light source, wherein the wide angle is provided on both sides of the light source in the longitudinal direction. The angle adjusters that can specify the light distribution of the middle angle and the narrow angle are symmetrically arranged, the reflector is supported by the same angle adjuster, and one or both angles are adjusted to control the light distribution. A luminaire characterized by being configured.