LIGHTING DEVICE FOR INSTALLATION IN PLANE SURFACE

摘要

A lighting device for installation in a substantially plane surface (101), comprising at least one lamp device (8) that emits light essentially in a light direction which forms an angle ( beta ) with a exit face (121) of a light refracting means (1) in the lamp device (8). The lamp device comprises a light source (107) that emits light towards an incident face (114) of the light refracting means (1), where the light refracting means (1) has a longitudinal direction coincident with the said light direction, and where the exit face (121) is approximately parallel to the substantially plane surface (101). The exit face (121) is set a slight angle of inclination ( gamma ) relative to the substantially plane surface (101), the angle ( beta ) and the angle of inclination gamma in combination causing light from the light source (107) to be brought to an emergent angle above the face (101) that satisfies pre-set requirements for light intensity close to the surface (101). A prism is also described wherein at least the edge formed between the exit face (121) of the prism and a side face (110) which forms an acute angle with the exit face (121) is rounded.