JP2012038694A - Road lamp lighting unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a road lamp lighting unit capable of irradiating a required road surface without exchanging a conventional case in the road lamp lighting device.SOLUTION: The road lamp lighting unit 7 capable of being installed in a case 1 arranged at an upper top part of a pole 2 provided on a road comprises a plurality of LED modules 6 made of one or a plurality of LED elements 5, a shade 3 of an almost rectangular parallelepiped shape, and a reflection plate 4 arranged at a ceiling face inside the shade. The LED modules are arranged on the ceiling face and a side wall face of the shade at different angles of at least two kinds. The LED modules arranged on the ceiling face are arranged so as to be closer to the pole. The LED modules arranged on the side wall face are arranged to spread the more outside, the more downward they go.

Description

  The present invention relates to an LED illumination lamp that illuminates a road surface.

    Fluorescent lamps and mercury lamps that can illuminate a wide area are commonly used as light sources for luminaires installed outdoors on the road, but in recent years they have low power consumption and long life. Characteristic LED light sources are becoming used.

  As such an invention, for example, there is a road light using an LED light source as disclosed in JP-A-2007-242258.

JP 2007-242258 A

  However, recent road lights that use LED light sources are such that the mounting base on which the LED module is installed is directly connected to the pole, so that the casing that covers the fluorescent and mercury lamps used in conventional road lights It is necessary to replace the whole. In order to replace the entire housing, various inspections such as a strength test are required to ensure safety.

  On the other hand, if the mount is installed without replacing the housing, the housing becomes a shadow and part of the light emitted from the LED light source is wasted, and the road surface cannot be irradiated as designed.

  In view of the above-described circumstances, an object of the present invention is to provide an LED lighting unit for a road light that can irradiate a road surface as designed without replacing a conventional housing.

  In order to achieve the above object, a road lamp illumination unit according to the present invention is characterized in that all LED light sources are installed inside a shade provided with a reflector.

  Further, the present invention is characterized in that a plurality of LED modules composed of one or a plurality of LED elements are arranged on the side wall surface of the shade with at least two different angles.

  In addition, the present invention is characterized in that the LED module disposed on the side wall surface is inclined so that the side surface of the shade extends outward as it goes downward.

  In addition, the present invention is characterized in that the LED module is installed on the ceiling surface of the shade at at least two different angles and is installed close to the pole side.

  As described above, all LED elements are installed in a shade, and a reflector is installed in the shade to reduce the upward luminous flux, thereby obtaining a light distribution without waste. Moreover, useless light distribution can be reduced by providing an inclination to the LED module disposed on the side wall surface. Furthermore, by bringing the LED module installed on the ceiling surface closer to the pole side, the road surface can be efficiently irradiated without the casing or the shade being shaded.

  Since the road lamp illumination unit according to the present invention is designed to irradiate the entire desired road surface even if all the LED modules are arranged inside the shade, the road lamp illumination unit is installed in a conventional casing. However, it is possible to irradiate the entire road surface without the case or the shade being shaded.

Side view of conventional housing and pole Lower perspective view of the roadlight lighting unit Rear view of the roadlight lighting unit installed in the housing Bottom view of the roadlight lighting unit installed in the housing Side cross-sectional view and light irradiation direction of the roadlight lighting unit installed in the housing Bottom view and light irradiation direction of road light lighting unit Frontal sectional view and light irradiation direction of the road lamp lighting unit The figure which showed the irradiation range of the road lamp lighting unit

  Hereinafter, in order to clarify the present invention, embodiments of the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, a conventional road lamp includes a casing 1 and a pole connected to the casing, and a fluorescent lamp and a mercury lamp (not shown) are installed inside the casing.

  As shown in FIG. 2, the road lamp illumination unit 7 according to the present invention includes a plurality of LED modules 6 including one or a plurality of LED elements 5 and a substantially rectangular parallelepiped shade 3 having a reflector 4 on a ceiling surface. Thus, the shade has a shape that can be attached to the inside of the casing 1, and FIG. In addition, a substantially rectangular parallelepiped shape means the shape which a part or all of the side wall surface of this shade spreads so that it goes below.

  As shown in FIG. 4, the LED module is arranged near the pole on the reflector and is mounted at at least two different angles to illuminate directly below and in front of the road lamp illumination unit.

  As shown in FIG. 5, the LED modules arranged on the ceiling surface of the shade 3 are arranged at different angles so that the light irradiation angle is arbitrarily adjusted as in 8a to 8c to irradiate a desired road surface. It becomes possible to do. Further, by installing the LED module close to the pole side, it is possible to obtain a light distribution in which the light 8a irradiating the road surface farthest from the pole installation portion does not become a shadow of the shade 3 and the housing 1. .

  Further, as shown in FIG. 6, the LED module is also arranged on the side wall surface of the shade 3 and is attached to at least two different angles to adjust the light irradiation angle as in 9a to 9d. Illuminate the left side, right side, left front and right front of the road lamp lighting unit.

  Further, as shown in FIG. 7, the LED module arranged on the side wall surface spreads outward as it goes downward, so that the light path is all downward and the light distribution is efficient with almost no upward light flux. Obtainable.

    By arranging the LED modules as described above and adjusting the number of installed LED elements, a road light illumination unit capable of irradiating the entire desired road surface as shown in FIG. 8 is obtained, and a conventional road light is provided. The road lamp lighting unit can be installed without replacing the housing.

DESCRIPTION OF SYMBOLS 1 Case 2 Pole 3 Shade 4 Reflector 5 LED element 6 LED module 7 Road light illumination unit 8a-8c Light irradiation direction 9a-9d Light irradiation direction

Claims (3)

In a road lamp illuminating device comprising an LED light source installed at an upper end of a pole standing on a road and a substantially rectangular parallelepiped shade covering the LED light source, the LED light source includes a plurality of one or more LED elements. The LED light module is arranged on at least two different angles on the side wall surface of the shade. The road light illumination unit according to claim 1, wherein the LED module extends outward as it goes downward. The road light illumination unit according to claim 1 or 2, wherein a plurality of LED modules are arranged at at least two different angles on the ceiling surface inside the shade, toward the pole side.

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