A LED light with no dark area and large angle light

Abstract

The invention discloses a dark area-free wide angle luminous LED lamp, wherein the LED lamp is a straight pipe-shaped lamp and comprises a lamp pipe, a circuit board with a long strip-shaped structure set inside the lamp pipe and a plurality of patch lamp beads evenly distributed on the circuit board; part of the pipe wall of the lamp pipe right facing the LED patch lamp beads is provided with a transparent reflection film; and the shape of the transparent reflection film is matched with that of the pipe wall of the lamp pipe. The advantages are that part of the pipe wall of the lamp pipe right facing the LED patch lamp beads is provided with the transparent reflection film; the shape of the transparent reflection film is matched with that of the pipe wall of the lamp pipe; the transparent reflection film not only has light-transmittable performance, but also has the function of reflecting light; most of the light is reflected out through light transmission; and few part of the light is reflected to the circuit board between the LED patch lamp beads through light reflection, thus eliminating the light and dark strips existing on the circuit board between the LED patch lamp beads while improving the luminous evenness and increasing the luminous angle.

Description

Technical field [0001] The invention relates to a lamp, in particular to an LED lamp that emits light at a large angle without a dark area. Background technique [0002] Various lamps and lanterns that use LEDs to emit light have been widely used. LEDs are solid-state chips that emit light, with an area ranging from a few tenths of a square millimeter to a few square millimeters, and a thickness between tens to hundreds of microns. LED chips must be packaged into lamp beads or other shapes before they can be used. LED SMD lamp beads are the most widely used packaging method for LEDs. Because of their low price and good performance, they have been widely used in LED straight tube lamps, LED bulb lamps and other LED lighting fixtures. [0003] The size of the LED SMD lamp beads is very small, only a few millimeters long and wide, and the thickness is only about 1 millimeter, or even less than 1 millimeter, and the power is usually less than 1 watt. LED straight tube lamps, such as ...

AI Technical Summary

Problems solved by technology

Since the LED SMD lamp beads emit light in a point shape and the light angle is only 120 degrees, there is a dark area at the end of the lamp head of the LED bulb lamp, and the light angle is difficult to reach more than 300 degrees

[0005] In order to expand the luminous angle of the existing LED straight tube lamp and the existing LED bulb lamp, the following two methods are often used. The first method is to install the LED patch lamp beads on the three-dimensional structure, or use a reflective device Wait to increase the luminous angle of the LED lamp, but this will cause the structure of the LED lamp to become complicated, and the cost and weight will increase; the second method is on the inner wall of the tube of the LED straight tube lamp and on the bulb of the LED bulb lamp A layer of light-diffusing material is coated on the inner wall, but this method is difficult to eliminate dark areas and improve the lighting angle

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