| 摘要 |
An emergency lighting device (10) for providing a directional indication (102) on a recipient surface with first and second guidance indication light sources (35) retained relative to a housing (12) to emit beams of light (100), each with a directional indication (102), onto a recipient surface. The light sources (35) can be individually operable and can have directional indications (102), such as arrows, pointing in first and second different directions. An illumination light source (35) without a guidance indication can illuminate an adjacent area. Guidance indication light sources (35), which can be lasers, can emit beams in different colors to provide threat level indications. Plural emergency lighting devices (10) can cooperate to guide a building occupant by providing directional indications (102) on recipient surfaces. |
