A flat 180° light-emitting patch led

Abstract

The invention discloses a planar 180-degree light-emitting patch LED. The LED comprises a support (1). A bowl cup (2) is arranged in the middle of the support (1). A plurality of radioactive lines (15) are annularly arranged on a circumference of the bowl cup (2). An LED chip (3) is arranged in the bowl cup (2), and the bowl cup (2) is filled with an optical cement (4). A diffusion layer (5) is coated above the support (1). A light outlet hole (9) is arranged in the diffusion layer (5) at a position of the bowl cup (2). A plurality of diffuse reflection grooves (6) are arranged in two side walls of the light outlet hole (9), and a plurality of embossments (7) are annularly distributed in each diffuse reflection groove (6). A light outlet is arranged in the position, corresponding to one end portion of each radioactive line (15), of the side surface of the support (1). In the invention, light uniformity can be improved, and the LED has advantages of a small thickness, high design flexibility, a high light source lighting effect, a wide application range, a long service life, a good heat dissipation effect and high flame-retardant performance.

Description

technical field [0001] The invention relates to an LED light source, in particular to a patch LED that emits light at 180° in a plane. Background technique [0002] SMD LED is a simple lamp. Its luminous principle is to pass current through compound semiconductors, and through the combination of electrons and holes, the excess energy is released in the form of light to achieve the effect of luminescence. At present, the SMD LED luminous angle Generally, it is around 120°. In order to increase the light-emitting angle, a secondary optical lens is generally installed above the chip to increase the light-emitting area. The focusing effect causes the luminous intensity at the edge to be lower than that in the middle, which affects the uniformity of the emitted light; and when the optical lens is used to improve the luminous effect, the shape and thickness of the optical lens determine the shape of the entire SMD LED And thickness, and when using optical lenses, it is necessary ...

AI Technical Summary

Problems solved by technology

[0002] SMD LED is a simple lamp. Its luminous principle is to pass current through compound semiconductors, and through the combination of electrons and holes, the excess energy is released in the form of light to achieve the effect of luminescence. At present, the SMD LED luminous angle Generally, it is around 120°. In order to increase the light-emitting angle, a secondary optical lens is generally installed above the chip to increase the light-emitting area. The focusing effect causes the luminous intensity at the edge to be lower than that in the middle, which affects the uniformity of the emitted light; and when the optical lens is used to improve the luminous effect, the shape and thickness of the optical lens determine the shape of the entire SMD LED And thickness, and when using optical lenses, it is necessary to add light guide plates, light enhancement sheets, etc., which makes the thickness of the entire SMD LED thicker

Therefore, the existing SMD LEDs have the problems of poor light uniformity and thick thickness.

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