Wide-beam-angle LED light source device

Abstract

The invention relates to a wide-beam-angle LED light source device. The device comprises a lamp holder, a heat radiator, a substrate, a main light source LED fixed to the substrate and a spherical crown bulb shell, and the device is characterized by further comprising a backlight LED arranged on the outer side of a main light source LED array and light guide plates communicated with a light path of the backlight LED. The light receiving ends of the light guide plates are embedded on the backlight LED through a strip-shaped pit slot, the light guide plates and the substrate are fixed to the end face of the heat radiator through screw holes, and therefore the backlight LED and the light guide plates form light path coupling, the light guide plates with a plurality of light guide points distributed are arranged on the periphery of the heat radiator, and a wide-beam column ball bulb type LED light source with the large light emitting area is formed. Obviously, the device obviously improves the full-direction light emitting performance of an LED bulb, the light distributing range and the three-dimensional lighting effect of a matched lamp are increased, the phenomenon that an incandescent light bulb is replaced with an existing LED bulb, and therefore defects exist is effectively eliminated, and therefore the device can be widely applied. Meanwhile, the device has the lighting and artistic decoration effects, and even the lamp can be directly used by omitting a lampshade and the like.

Description

technical field [0001] The invention belongs to the field of semiconductor lighting fixtures, in particular to a wide beam angle LED light source device. Background technique [0002] In order to prevent the reduction of luminous efficiency and the shortening of the service life of the existing LED light bulbs, the heat generated by the LED chips needs to be dissipated effectively, so the aluminum heat sink with a certain surface area becomes a necessary component of the light bulbs. The radiator itself is not a luminous body but occupies most of the volume of the bulb. In addition, the LED has a strong light emission direction and is mounted on the substrate on the end surface of the radiator, so its light can only be emitted in a direction perpendicular to the end surface of the radiator. The luminescence along the end of the radiator facing the surrounding space is relatively weak. Even if the configured crown bulb has a certain light diffusivity, the improvement to the l...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a wide beam angle LED light source device to overcome the defects of small light-emitting area and narrow beam angle caused by the constitutive problem of the radiator of the existing LED bulb

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