JPH07220517A - Luminaire - Google Patents

Abstract

PURPOSE:To easily perform various types of luminous intensity distribution with a one luminaire. CONSTITUTION:A transparent plate 10 in which the vicinity of the center is constituted as the diffusion surface and the periphery of the diffusion surface is formed in a transparent part 12 is arranged on the front face of a luminaire main body 1 in which a light source is fit to the inside. A reflecting mirror 9 capable of optionally adjusting the angle is arranged at both ends in the lengthy direction of the light source.

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, and it is an object of the present invention to provide a lighting fixture which can easily obtain a plurality of types of light distribution with one lighting fixture.

[0005]

The present invention has the following constitution in order to solve the above problems. That is, on the front surface of the main body of the luminaire in which the light source is arranged, a light-transmitting plate having a diffusion surface near the center and a transparent outer periphery is arranged. In addition, reflecting mirrors having adjustable angles are arranged on both sides of the light source in the longitudinal direction. Then, one or both angles of the reflecting mirror are adjusted to obtain a plurality of light distributions.

[0006]

According to the luminaire having the above structure, various types of illumination can be obtained by setting the reflecting mirrors on both sides at the same angle or by setting the reflecting mirrors on both sides at different angles.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to FIGS. In the figure, 1 is a main body of the luminaire having an open bottom surface, 2 is a socket fixed inside the main body 1 of the luminaire, 3 is a light source mounted on the socket 2, and a high voltage of about 100 watts, for example. A discharge lamp, 4 is a support fixture fixed inside the lighting fixture body 1, 5 is a reflector support fixture arranged symmetrically with respect to the support fixture 4, and 6 is a reflector support fixture 5.
It is an angle adjuster arranged so that the angle can be changed, and is provided with a plurality of positioning grooves 7 and 8 so that the angle can be changed to a wide angle, a medium angle, and a narrow angle. Reference numeral 9 denotes a reflecting mirror 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, reference numeral 10 denotes a main body 1 of the luminaire.
Is a flat plate-shaped light-transmitting plate that is supported in the lower opening of
For example, it is made of acrylic. As shown in FIG. 3, the transparent plate has a diffusion surface 11 in the vicinity of the center and a transparent 12 on the outer periphery of the diffusion surface. The diffusion surface 11 is made uneven by so-called frost processing or printing. Further, the diffusing surface 11 and the transparent portion 12 are formed at a ratio of 1: 1, for example. Diffusing surface 11 of transparent plate 10, transparent portion 12, and reflecting mirror 9
In consideration of the reflected light, in the wide-angle light distribution, all the reflected light enters the diffusing surface 11, and in the narrow-angle light distribution, the reflected light does not enter the diffusing surface at all and enters only the transparent portion 12. Configured.

Next, the control of the light distribution in the luminaire having the above structure will be described with reference to FIGS. FIG. 5 shows a state in which the reflecting mirror is fully closed, and the reflected light and the direct light are all diffused surface 11
Enter and enter wide-angle lighting. Further, since the reflected light and the direct light are all irradiated through the diffusion surface 11, the evenness on the surface to be irradiated is increased and the glare is reduced.

FIG. 6 shows a state in which the reflector is fully opened.
Since the irradiation light in the direction directly below the light source is irradiated through the diffusion surface 11, the evenness on the surface to be irradiated is increased, and since a part of the reflected light is irradiated through the transparent portion 12, a narrow irradiation surface is obtained. The irradiation surface can be illuminated three-dimensionally. The angle of the reflecting mirror may be set between FIG. 5 and FIG.

Asymmetric light distribution can also be obtained by changing the angles of the reflecting mirrors arranged at both ends of the light source and setting them.

[0012]

As described above, the present invention is provided on the front surface of the light source,
It was constructed by arranging a light-transmitting plate with a diffuser surface near the center and a transparent outer periphery, and by arranging reflecting mirrors with adjustable angles on both sides in the longitudinal direction of the light source. Therefore, by adjusting the angle of the reflecting mirror, there is a unique effect that various types of illumination can be easily obtained.

[Brief description of drawings]

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

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

FIG. 3 is a bottom view of the luminaire of the present invention.

FIG. 4 is a partially enlarged front view of the lighting fixture of the present invention.

FIG. 5 is a side view showing a state where the reflector of the lighting equipment of the present invention is maximally closed.

FIG. 6 is a side view showing a state where the reflector of the lighting apparatus of the present invention is opened to the maximum extent.

[Explanation of symbols]

 1 Lighting Fixture Main Body 2 Socket 3 Light Source 4 Supporting Tool 5 Reflecting Mirror Supporting Tool 6 Angle Adjusting Tool 7, 8 Positioning Groove 9 Reflecting Mirror 10 Translucent Plate 11 Diffusing Surface 12 Transparent Section

Claims (1)

[Claims] 1. A light-transmitting plate having a diffusion surface near the center and a transparent outer periphery of the diffusion surface is arranged on the front surface of a main body of a lighting fixture in which a light source is arranged. A luminaire characterized in that reflecting mirrors configured to be adjustable in angle are arranged on both sides in the longitudinal direction, and one or both angles of the reflecting mirrors are adjusted to control light distribution.