Lighting device

Abstract

The invention discloses a lighting device used for lighting up adjacent a first area and a second area. The lighting device comprises a first light source module and a second light source module. The first light source module is provided with a first light ray formed by a first spectrum. The first light ray has a visual ratio (S / P) smaller than 2, and a definition of the visual ration is a ratio of a noctovision luminosity (S) and a daylight vision luminosity (P). the second light source module is provided with a second light ray formed by a second spectrum. The second light ray has a visual ratio bigger than 2, wherein color temperature of the second light ray is similar to that of the first light ray, and noctovision efficiency of the second light ray is bigger than that of the first light ray. The noctovision efficiency is defined as a ratio of the noctovision luminosity and power. The lighting device can consider both lighting security demand and energy saving demand.

Description

technical field [0001] The present invention relates to a lighting device, and in particular to a lighting device for roads and road shoulders, which can meet both lighting safety requirements and energy saving requirements. Background technique [0002] In the outdoor low-light environment (Dim ambience) at night, there is a contradiction between lighting safety requirements and energy-saving requirements of lighting devices (such as street lamps, etc.). Furthermore, a safe driving environment can be provided by adequately illuminating the road, but the time for people and vehicles to pass by is not much, which causes a waste of lighting energy. On the other hand, the waste of lighting energy can be reduced by shortening the lighting time of street lights and reducing the number of street lights. However, insufficient lighting will cause traffic and security concerns. [0003] figure 1 It is a schematic diagram of the lighting device for lighting the road and the shoulder...

AI Technical Summary

Problems solved by technology

If the lighting brightness of the road shoulder F is not enough, driving 110 will be unable to react to things suddenly appearing from the road shoulder F, which will reduce driving safety

However, the above-mentioned situation is usually an accidental event, so maintaining long-term, high-brightness, and large-scale lighting of the road shoulder F will cause energy waste, and will also cause light pollution to the surrounding environment of the road shoulder F, reducing the sleep quality of the surrounding residents 120

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