POWERFUL FILAMENT LED LAMP Russian patent published in 2019 - IPC F21S8/00 

FIELD: lighting engineering.

SUBSTANCE: invention relates to semiconductor lighting, in particular, to lamps with a high-power LED module formed by a combination of several filaments with LEDs. Lamp contains a gas-filled flask, a volumetric LED module with three, four or more filaments in the form of transparent glass or metal lines or strips, with LEDs connected in thermal contact on one or both sides, connected to the driver and to the base. Each filament of the LED module is connected with a longitudinally concave reflector screen, which together form an armature that redistributes the shielded part of the optical and thermal radiation of the LEDs and filaments onto the walls of the bulb and the optical one is simultaneously shaded and the transfer of thermal radiation of all the filaments of the LED module is limited, eliminating the mutual influence of radiation between them and limiting conductive-convective heat transfer. Screens reflectors of reinforcement can be made in the form of a set of cells from a heat-conducting material, in particular from aluminum, and installed on the holder of the filaments or on the part of the bulb that mates with it. Armature with reflector screens can be made of the same material as the bulb, i.e. from silicate glass or from optical polycarbonate with longitudinally concave cells of these reflectors coated with a specular or diffusely reflecting radiation layer, and welded to the walls of the bulb. Armature reflectors can have a parabolic-conical or parabolic-cylindrical reflecting surface with filaments mounted on the focal lines of the LED that form a 3D LED lamp module. Filaments can be covered with a layer of silicone, including phosphor mixed therein using short-wave LEDs, or the phosphor can be integrated into the walls of the bulb for reradiation and diffusion of light.

EFFECT: increase in the power of the filament lamps due to the exclusion of heat exchange by radiation between the filaments and the LEDs, as well as an increase in the light output of the lamps.

10 cl, 2 dwg