Built-in track system L-shaped (3000*3000 mm)
Built-in linear system (length 3000 mm)
Lamp INF TUBE LINE (length 800 mm)
https://www.centrsvet.ru/catalog/svetilnik_infinity_systems_48v/inf_line_tube/ 
INF FREELIGHT luminaire in three configurations with different lengths of the neon tube
https://www.centrsvet.ru/catalog/svetilnik_infinity_systems_48v/inf_liana/ 
Luminaire INF LINE (length 400 and 800 mm)
https://www.centrsvet.ru/catalog/svetilnik_infinity_systems_48v/inf25_line/ 

Neon tubes are not editable – converted to editaible poly
The light is made by materials CoronaLight / VrayLight
The scene also contains boxes for creating holes in the ceiling
using Corona Distance (see instructions in the archive)
At close angles it is recommended to add TurboSmooth

For Corona render it is recommended to install a version of at least 1.5 since the glossiness of materials is configured taking into account PBR

Those who work in V-Ray versions lower than 3.1 be careful in the materials in the BRDF section there is Microfaset GTR ( GGX ) if your version is older than 3.1 then the BRDF field will be empty. Choose Blinn Phong or Ward – whichever suits you best