JPH03173003A - Street lighting - Google Patents

Abstract

PURPOSE:To enable light to be irradiated to the upward and downward directions of a road along the longer direction of the road as well as to make a device simple in configuration at low cost by disposing a lamp the both side illuminating surfaces of which are faced to each other while being formed into nearly flat shape, to a lamp body in such a way the both side illuminating surfaces are faced to the upward and downward directions of the road respectively. CONSTITUTION:A lamp is made up in such a way that its discharge pass is bent in a W-shape configuration over a same flat surface. This is, for example, a type of a compact fluorescent lamp in a single shape. Each illuminant surface at the both sides of the lamp 4 is of a flat shape, and the largest quantity of light is emitted from these illuminant surfaces at the both sides. The illuminant surfaces at the both sides of the lamp 4 which are faced to each other, are disposed to a lamp body 3 which is supported by a support body 1 erected along a road 2, in such a way that the illuminant surfaces at the both sides are faced to the longer direction of the road 2, the light is thereby distributed to the longer direction of the road 2 while excellent lighting can be available. By this constitution, excellent lighting effect can thereby be obtained only by a single lamp 4 without any particular optical design to control light distribution so that a device can easily be made at low cost.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a street light that effectively irradiates lamp light in the longitudinal direction of a road.

(Prior Art) A street light installed on or along a road emits light from a lamp inside a lamp body supported by a support body along the longitudinal direction of the road in the upward and downward directions of the road. Light distribution is controlled so that As a means of control, there is a method of directing the light from the lamp in the above-mentioned desired direction by applying an optical design such as forming a prism surface on the front surface of a single lamp, and a method of installing two lamps, one of which is directed toward the road. A method is known in which one direction is directed upward while the other direction is directed downward.

(Problems to be Solved by the Invention) The former method requires a special optical design for light distribution control, making it expensive;
It also has the disadvantage of being expensive since it requires several lamps.

The present invention eliminates the above-mentioned drawbacks, and provides a street light that can emit light along the longitudinal direction of the road in the upward and downward directions of the road, and that can be manufactured with a simple structure and at low cost. The purpose is to

[Structure of the Invention] (Means for Solving the Problems) The present invention provides a lamp body supported by a support installed along or on a road, with opposing both side light-emitting surfaces shaped like road surfaces. The light emitting surfaces on both sides are arranged so as to face each other in the up and down directions of the road.

(Function) A lamp with opposing both-side light-emitting surfaces shaped like a road surface is disposed on the lamp body supported by a support, and the above-mentioned both-side light-emitting surfaces of this lamp are made to face each other in the longitudinal direction of the road. The lamp alone can illuminate the road well along the length of the road, and does not require any special optical design, so it can be manufactured at low cost.

(Example) The details of the present invention will be explained with reference to the drawings. 1 is a support installed along or on the road 2, 3 is a lamp supported by this support 1, 4 is a lamp disposed on the lamp 3, and this lamp 4 is: Opposing light-emitting surfaces on both sides are each formed in the shape of a road surface, and these light-emitting surfaces on both sides are disposed on the lamp body 3 so as to face each other in the longitudinal direction of the road 2 .

Next, to explain the above embodiment in more detail, the support 3
is bent into an L-shape, and a lamp body 3 is supported at the tip of this support body 1. The lamp body 3 has a transparent globe 6 made of glass, plastic, etc., and a socket (not shown) provided inside the globe 6. The lamp 4 is attached to the socket and is, for example, a single-end compact fluorescent lamp having a discharge path bent into a W-shape on the same plane.

Next, the operation of the above embodiment will be explained. When the lamp 4 is turned on, the road 2 is illuminated by the light from the lamp 4. Both side light emitting surfaces of the lamp 4 are planar, and the most light is output from these both side light emitting surfaces.

These both side light emitting surfaces are opposed to each other in the longitudinal direction of the road 2. Therefore, the light from the lamps 4 illuminates a long distance along the longitudinal direction of the road 2. The direction across the road 2 is illuminated at the middle of both light emitting surfaces.

As a result, as shown in the isolight curve 7 on the road 2 in FIG.
along the longitudinal direction of the road, making it possible to provide good road illumination. Since there is no need to use a prism or the like, or a plurality of lamps 4 facing each other in the up and down directions of the road 2, the structure can be simple and manufactured at low cost.

Note that the lamp 4 may be U-shaped. Alternatively, a flat fluorescent lamp having a meandering discharge path may be used. Further, the support 1 may be provided along the edge of a road, or may be provided on a road such as a median strip of a road.

(Effects of the Invention) As described in detail above, the present invention provides a lamp whose opposite side light-emitting surfaces are shaped like a road surface, to a lamp body supported by a support installed along or on a road. Since the light emitting surfaces on both sides are arranged in the light body so as to face each other in the longitudinal direction of the road, it is possible to obtain light distribution along the longitudinal direction of the road and to provide good illumination. It requires only one lamp and does not require any special optical design for light distribution control, so it can be manufactured easily and at low cost.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is a perspective view showing the state installed on a road, FIG. 2 is a partially cutaway side view, and FIG. 3 is a partially cutaway front view. 1... Support body, 2... Road, 3... Light body, 4... Lamp.

Claims (1)

[Scope of Claims] A support that is erected along or on the road; A lamp supported by the support; Opposing light-emitting surfaces on both sides are each formed in the shape of a road surface; and a road surface-shaped lamp disposed on the lamp body so as to face each other in the longitudinal direction of the road.