Patent RU-2681834-C2 (RU)
Inventor: Filatov Vadim Viktorovich
IPC: F21V8/00
Filed: 2016-12-09
Granted: 2019-03-13
Abstract: FIELD: lighting equipment.SUBSTANCE: invention relates to the field of lighting technology, specifically to LED lamps, and can be used in table lamps, in decorative elements with the formation of the necessary directivity of light at low energy consumption. Technical result is achieved due to the fact that the LED lamp contains flask (1) with a cavity that is light-permeable, base (8) with first contact and second contact, leg, first support (12) and second support (6), first (2) LED assembly with first working plane and first longitudinal axis, and a second (3) LED assembly with a second working plane and a second longitudinal axis. first and second LED assembly consists of LEDs (18) and substrate 19. LEDs (18) of first LED assembly are located on the first working plane, and LEDs (18) of the second LED assembly are located on the second working plane. First LED assembly and the second LED assembly are located in the cavity of the bulb, first LED assembly and the second LED assembly are arranged criss-crossed when viewed in the direction of cap (8) from the side of bulb (1). Second working plane faces first (2) LED assembly, and substrate (19) of first (2) LED assembly faces with its rib towards second (3) LED assembly. One of the substrates is attached to the free ends of first support (12) and second support (6) and is located between them, and first (2) LED assembly and second (3) LED assembly are connected to the first contact and the second contact to ensure their operability. Flask is sealed and its cavity is filled with a gas composition comprising at least helium. Flask (1) is connected to base (8), leg is fixed and placed in a flask, and first (12) support and second (6) support are electrically insulated from each other. Power supply unit 11 converts the voltage of the external power source into an operating voltage, necessary for the correct operation of first (2) LED assembly and second (3) LED assembly. When LEDs (18) pass through the received electrical circuit in the forward direction, optical radiation is generated. Light from the second (3) LED assembly extends in the direction of the symmetry axis of bulb (1). Main layer (21) and additional layer (27) with phosphor (20) convert this radiation into light in a relatively wide spectral band with a maximum in the yellow region. Radiation of LED (18) and phosphor (20), mixing, give a white light. Main layers (21) and additional layers (27), which are a mixture of an epoxy compound and phosphor (20), are applied to LED (18) with substrate (19), covering it at the back of LED assembly (18). This makes it possible to improve the radiation pattern of the light emitted by light emitting diodes (18) due to the scattering process. In addition, the larger the thickness of base layer (2) and additional layer (27) with phosphor (20), the greater the scattering in it. Main light emission is emitted by LEDs (18) in the direction along the symmetry axis of bulb (1).EFFECT: luminous flux is emitted uniformly, and the resulting radiation pattern does not contain dark areas in the center of the illuminated area.30 cl, 6 dwg