Light guide hollow lens and LED (light-emitting diode) lamp bead

Abstract

The invention discloses a light guide hollow lens and an LED (light-emitting diode) lamp bead. The light guide hollow lens comprises a lens body, an incident surface and an emergent surface, the incident surface and the emergent surface are positioned on the inner side and the outer side of the lens body, the lens body is provided with a revolution body, the incident surface is provided with a revolution parabola surface with a downward opening, the emergent surface is provided with a revolution sphere surface, the revolution body, the revolution parabola surface and the revolution sphere surface have the same revolution shaft, the lens body above the incident surface is provided with a reflecting surface, the reflecting surface is provided with a revolution taper surface with an upper opening, the revolution taper surface and the revolution parabola surface have the same revolution shaft, the LED lamp bead comprises an LED light source and the light guide hollow lens with the structure, and the LED light source is positioned on a focus of the incident surface. According to the light guide hollow lens, a light beam emitted by the light source has a larger emitting angle, a lamp forms a larger lighting aperture and can have refraction deflection, reflection and scattering functions on the light beam of the light source, and the visual lighting effects of the LED lamp are remarkably improved.

Description

Technical field [0001] The invention relates to the field of lighting, in particular to a light-guiding hollow lens and LED lamp beads. Background technique [0002] In recent years, as pollution and energy problems have become increasingly prominent, more energy-saving and environmentally friendly LED lights have been widely promoted and applied; LED lights generally include light-emitting diodes and a lampshade above the light-emitting diodes. At present, the light emitted directly from the light-emitting diodes is often not very To meet the lighting needs well, the light-emitting diodes are generally installed with lenses to adjust the light output. [0003] In practical applications, in order to improve the visual effect of light, it is necessary to install a lens with light adjustment effect outside the LED light source. The commonly used lens is generally an astigmatic lens, and its typical structure is a plug-in LED lamp disclosed in Chinese patent ZL201710327387.5 Bead len...

AI Technical Summary

Problems solved by technology

[0002] In recent years, as pollution and energy problems have become increasingly prominent, more energy-saving and environmentally friendly LED lights have been widely promoted and applied; LED lights generally include light-emitting diodes and lampshades above the light-emitting diodes. At present, the light emitted directly from the light-emitting diodes is often not very good To better meet the lighting needs, generally adopt the method of adding a lens to the light-emitting diode to adjust its output light pattern

[0003] In practical applications, in order to improve the visual effect of light, it is necessary to install a lens with light adjustment effect in addition to the LED light source. At present, the commonly used lens is generally an astigmatism lens, and its typical structure is a plug-in LED light disclosed in Chinese patent ZL201710327387.5 Bead lens and lens group, it records that "single lens (2) is a hollow semi-elliptical body, the exterior is composed of a smooth spline surface (7), and the interior is composed of a smooth hemispherical surface. Lens incident surface (9) ; The inside of the single lens (2) is the technical solution of the lamp bead accommodating cavity (8), and its light path diagram is as recorded in its open text Figure 5 and Image 6 As shown, it adjusts the point-like beam from the light-emitting diode into a divergent beam through the lens. However, due to the small beam deflection and concentrated brightness of the LED lamps adjusted by this lens, the visual effect is poor, especially if the light is too concentrated. Under the luminaire, the lighting effect is poor; therefore, improving the deflection of the lens to the beam and making the LED have a larger lighting aperture is of great significance for improving the visual lighting effect of the LED luminaire

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