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Lighting unit and luminaire for road and/or street lighting

A lighting unit and street lighting technology, applied in the field of illuminators, can solve problems such as complexity, changes in light distribution, and difficult light distribution characteristics of illuminators, and achieve the effect of compact arrangement and high efficiency

Active Publication Date: 2012-02-15
ZG LIGHTING FRANCE SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, all solutions known from the prior art have the disadvantage of being very complex and difficult to adjust the light distribution characteristics of the luminaire
Significant changes in light distribution can only be obtained by changing the arrangement of the light source or using multiple different optical components

Method used

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  • Lighting unit and luminaire for road and/or street lighting
  • Lighting unit and luminaire for road and/or street lighting
  • Lighting unit and luminaire for road and/or street lighting

Examples

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Embodiment Construction

[0029] Before discussing the luminaire of the present invention in more detail, reference will be made to figure 1 Briefly describe the problem of street lighting. The figure shows a situation in side view where the street lighting luminaire 100 is located next to a road 110 with sidewalks 115 on both sides of the road 110 . The light emitted from the lighting head 101 of the street lighting luminaire 100 should be directed in such a way that most of the light is directed to the road 110 itself. Therefore, it is desirable to first obtain a high-brightness first light dihedral A that illuminates the road 110 . However, the sidewalks 115 on either side of the road 110 should not be completely dark, so two additional smaller low luminance dihedral sections B and C are required. Therefore, the lighting head 101 of the luminaire 100 must have specific light emission characteristics that lead in particular to a symmetrical light distribution along the C90-C270 plane, ie in the tra...

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PUM

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Abstract

A lighting unit (10) for use in a luminaire (1), in particular a luminaire for road and / or street lighting, comprises a plurality of light sources (12) and a reflector unit (20) being arranged in front of said light sources (12) to control the distribution of the light emitted by said light sources (12). The reflector unit (20) comprises a plurality of reflector elements (22) being arranged parallel to each other, wherein at least some of said reflector elements (22) comprise a first portion (23) being adapted for total reflection and a second portion (24) being adapted for partial reflection.

Description

technical field [0001] The invention relates to a lighting unit and a luminaire used for road and / or street lighting. In particular, the invention is directed to a lighting unit having a plurality of light sources and a reflector unit arranged in front of said light sources to control the distribution of light emitted by said light sources. Background technique [0002] As is customary for luminaires for street and / or road lighting in urban areas, known street lighting luminaires are mounted on columns or on wall fronts, with a longitudinal direction directed perpendicular to the street or road to be illuminated plane of symmetry. Thus, the luminaire must project the light generated onto the pavement from a plane of symmetry so that the part of the street or roadway is evenly illuminated to the left and right of the luminaire. Furthermore, a part of the light also shines along the plane of symmetry, so that the entire width of the street or road in front of the luminaire i...

Claims

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Application Information

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IPC IPC(8): F21S8/08F21V11/02
CPCF21V7/0083F21V11/02F21W2131/103F21Y2115/10F21S8/086Y02B20/72
Inventor 让-保罗·拉米弗洛里安·罗卡尔
Owner ZG LIGHTING FRANCE SAS
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