LIGHTING BOX WITH DISCHARGE LAMP Russian patent published in 1996 - IPC

FIELD: lighting engineering. SUBSTANCE: lighting box has discharge lamp, transparent shell, butts and protective shell manufactured as glass tube. Jacket of elastic transparent film isolating lamp and its content from outer space in case of mechanical damage to tube or loss of sealing is applied on internal and external sides of tube. Lighting box can be assembled quickly and provides for multiple usage of protective shell when lamp is replaced. There are provided makes expanding operational capabilities of box thanks to application of light reflecting coat on part of tube under transparent elastic film which ensures specified emittance angle of lamp, Light controlling frame with ribs distance between which satisfies condition , where b is distance between ribs of frame, a is height of ribs of frame, a is adjustable protective angle in considered section can also be used for strengthening and light control. EFFECT: high efficiency. 5 cl, 12 dwg