Cylindrical LED lamp capable of emitting light uniformly

Abstract

The invention discloses a cylindrical LED lamp capable of emitting light uniformly. The cylindrical LED lamp capable of emitting light uniformly comprises an LED light source, a cylindrical radiator (9), a light diffuser (8) and a power circuit module (5). An LED light source mounting surface is formed on the outer cylindrical surface of the radiator (9), and a radiating through-cavity (3) is formed in the core of the cylindrical radiator (9). The light diffuser comprises a plurality of cone-like barrels (2), and reflecting layers are formed on the upper surfaces and / or the lower surfaces of the cone-like barrels (2). An LED light source is mounted on the radiator (9) to form a cylindrical lamp core, and the cone-like barrels (2) are sleeved on the cylindrical lamp core layer by layer at intervals, so that at least part of light rays, reflected by the cone-like barrels on the upper layer, emitted from the LED light source, are irradiated outside a radiating region, reflected by the cone-like barrels on the lower layer, of the LED light source. The cylindrical LED lamp capable of emitting light uniformly has wide irradiation area and soft and uniform light rays, and is more convenient to assemble and maintain.

Description

[0001] technical field [0002] The invention relates to an illuminating device, in particular to an LED illuminating lamp with a uniform light output and a columnar structure. [0003] Background technique [0004] As a new light source, LED (Light Emitting Diode) light source is favored in many fields due to its advantages of safety, energy saving, long life and environmental protection. With the continuous development and maturity of LED light source, LED modules have been able to produce sufficient brightness Light will surely replace existing light sources such as incandescent lamps revolutionaryly. However, in the common design, the light-emitting diode module of the lamp is generally placed on one surface of an integrally formed bulky substrate to form a single planar light source. The substrate is usually a high thermal conductivity with heat dissipation function This type of planar light source has a single irradiation direction and a limited irradiation area, mak...

AI Technical Summary

Problems solved by technology

However, in the common design, the light-emitting diode module of the lamp is generally placed on one surface of an integrally formed bulky substrate to form a single planar light source. The substrate is usually a high thermal conductivity with heat dissipation function This type of planar light source has a single irradiation direction and a limited irradiation area, making it difficult to obtain an ideal lighting distribution, let alone form a uniform and soft lighting around the lamp, which seriously restricts the popularization and application of LED lighting, especially difficult to meet The application requirements of indoor lighting, in response to this requirement, Chinese patent document CN101713524A discloses an LED indoor lamp, including a frame, a number of LED modules arranged on the frame, a light guide cover arranged on the LED module, and a The power circuit module on the frame is characterized in that: the frame includes a plurality of conical tubes sleeved at intervals, the LED module is arranged on the outer surface of each conical tube, and the inner ring of the conical tube is placed on the At least part of the light emitted by the LED module is irradiated outside the projection area of ​​the outer conical tube in the light emitting direction. The LED indoor lamp with this structure has a multi-conical tube stacked along the central axis. The light-emitting surface is inclined outward away from the back cover, and the inclination of the plane of the cones, the distance between the planes of the cones, and the height difference between the cones make the light emitted by the LED module perpendicular to itself. Blocked by the adjacent conical tube, at least part of the main light emitted by the LED module on the inner conical tube irradiates outside the projection range of the foreign conical tube in the light emitting direction, that is, the inner conical tube The light emitted by the LED module on the top is at least perpendicular to the light-emitting surface of the LED module itself and the ring-shaped area surrounded by the projection line of the outer tapered tube in the light-emitting direction does not overlap, thus having a wide irradiation area. More importantly, the LED indoor lighting makes the light uniform and soft due to the parallel irradiation of multiple LED modules, which is superior to other existing lighting. Moreover, the positions of the LED modules are scattered, which increases the assembly process, and the heat dissipation structure is difficult to realize, and it is difficult to adapt to the characteristics that each LED lamp bead requires high heat dissipation conditions.

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