Low-blue-light LED lamp bead device

Abstract

The utility model relates to a low-blue-light LED lamp bead device which comprises an LED metal support, an LED plastic support and a gold thread. An LED light source element is arranged in a containing space formed by an LED metal support and an LED plastic support, fluorescent glue is laid on the LED light source element and around the LED light source element, a reflecting film is arranged on the upper end face of the LED plastic support, and the reflecting film is composed of a plurality of surface coating layers made of titanium oxide, silicon dioxide and magnesium oxide materials. According to the principle of constructive interference of reflected light, light emitted by harmful blue light of 415-455nm is reflected back to the interior of a lamp bead through a reflecting film which is arranged on the upper end face of an LED plastic support and composed of a plurality of surface coating layers, the light transmission amount of the harmful blue light of 415-455nm is reduced, reflected light is increased, and the reaction increasing effect is achieved; harmful blue light in white light released by the LED wafer is reduced to be released to the outside, the harmful blue light wave band is avoided to release light, and therefore the hidden danger that a user watching the display screen for a long time is hurt by the blue light is avoided.

Description

[Technical Field]

[0001] This utility model relates to the field of LED lamp bead technology, and more particularly to a low blue light LED lamp bead device for backlit LED displays. [Background Technology]

[0002] LED, or Light Emitting Diode, is a solid-state semiconductor device that directly converts electrical energy into light energy. Due to its energy-saving, environmentally friendly, and reliable characteristics, LED chips are widely used in the lighting industry. The white light emitted by most LED chips in the current lighting industry is formed using blue light technology combined with phosphors, and is widely used in daily life, road lighting, and medical lighting. The white light emitted by existing LED chips mainly relies on blue light with a wavelength of 450-455 nm to excite the phosphor. Typically, the wavelength of LEDs is controlled within 500 nm at the factory, generally between 450-455 nm or 455-460 nm, all of which fall within the range of strongest radiation damage. This short-wavelength blue light has extremely high energy and can penetrate the lens of the eye to reach the retina, causing photochemical damage to the retina and directly or indirectly damaging macular cells. Prolonged exposure to such light sources inevitably leads to blue light damage to the eyes, especially for users who need to stare at screens for extended periods. [Utility Model Content]

[0003] In view of this, the technical problem to be solved by this utility model is to provide a low blue light LED lamp bead device that can avoid the hidden danger of blue light damage to users who stare at the screen for a long time.

[0004] To address the aforementioned technical problems, the present invention provides a low blue light LED bead device, which includes an LED metal bracket, an LED plastic bracket mounted on the LED metal bracket, and gold wire.

[0005] The housing space formed by the LED metal bracket and the LED plastic bracket is equipped with an LED light source element that can emit white light. The LED light source element includes an LED chip that is fixedly soldered inside the housing space formed by the LED metal bracket and the LED plastic bracket, and two gold wires. One end of each gold wire is soldered to the LED metal bracket, and the other end of the gold wire is soldered to the LED chip.

[0006] The upper surface of the LED plastic bracket is provided with a reflective film for blocking harmful blue light emission; the reflective film is composed of multiple surface coating layers, each of which is made of titanium oxide, silicon dioxide and magnesium oxide.

[0007] Fluorescent adhesive is laid on the top and around the LED light source element; the fluorescent adhesive is laid on the upper part of the receiving space formed by the LED metal bracket and the LED plastic bracket, and the fluorescent adhesive wraps several gold wires, blue LED chips and purple LED chips in a closed space; the bottom of the LED metal bracket is provided with metal fixing holes for fixed connection.

[0008] The beneficial technical effects of this utility model are as follows: LED light source elements are installed inside the housing space formed by the LED metal bracket and the LED plastic bracket. Fluorescent adhesive is laid on the top and around the LED light source elements. A reflective film for blocking harmful blue light emission is provided on the upper surface of the LED plastic bracket. The reflective film is composed of multiple surface coating layers. Each surface coating layer is made of titanium oxide, silicon dioxide and magnesium oxide. The reflective film is composed of surface coating layers with a number of layers between 1 and 100.

[0009] An LED light source circuit is formed by using an LED metal bracket, an LED plastic bracket, and fluorescent adhesive to create a housing space. Gold wires then connect the LED chip to the LED metal bracket. This circuit drives the LED chip to emit blue light. Utilizing the principle of constructive interference of reflected light, a reflective film composed of multiple surface coating layers on the upper surface of the LED plastic bracket reflects the emitted harmful blue light in the 415-455nm wavelength range back into the LED chip. This reduces the amount of harmful blue light transmitted in the 415-455nm range and increases the reflected light, effectively reducing the harmful blue light emitted from the white light emitted by the LED chip. By avoiding the release of harmful blue light in this wavelength range, the circuit prevents users who spend long periods looking at the display screen from being harmed by blue light.

[0010] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. [Attached Image Description]

[0011] Figure 1 This is a schematic diagram of the structure of a low blue light LED lamp bead device according to the present invention;

[0012] Figure 2 This is a schematic diagram of the reflective film in this utility model.

Detailed Implementation Methods

[0013] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0014] Please refer to Figure 1 and Figure 2 As shown in the figure, a low blue light LED lamp bead device is described below with reference to an embodiment. It includes an LED metal bracket 1, an LED plastic bracket 2, a plurality of gold wires 3, and an LED light source element.

[0015] The LED light source element includes an LED chip 4 fixedly soldered inside the housing space formed by the LED metal bracket 1 and the LED plastic bracket 2, and two gold wires 3; one end of each gold wire 3 is soldered to the LED metal bracket 1, and the other end of the gold wire 3 is soldered to the LED chip 4.

[0016] The housing space formed by the LED metal bracket 1 and the LED plastic bracket 2 houses an LED light source element capable of emitting white light. Fluorescent adhesive 5 is applied to the top and around the LED light source element. The fluorescent adhesive 5 is applied to the upper part of the housing space 6 formed by the LED metal bracket 1 and the LED plastic bracket 2, enclosing several gold wires 3 and the LED chip 4 within a sealed space. The bottom of the LED metal bracket 1 has metal fixing holes 7 for fixed connection.

[0017] The upper surface of the LED plastic bracket 1 is provided with a reflective film 8 for blocking harmful blue light emission. This reflective film 8 is composed of multiple surface coating layers, each made of titanium oxide, silicon dioxide, and magnesium oxide. The reflective film 8 consists of between 1 and 100 surface coating layers.

[0018] The thickness of the surface coating layer is half the wavelength of a single light. A reflective film 8 is laid on the upper surface of the LED plastic bracket 1. This reflective film 8 can reflect the emitted harmful blue light in the 415-455nm band back into the LED chip. In this structure, the harmful blue light band is between 415-455nm. For example, if we use the 450nm band, the thickness of the surface coating layer is 225nm. The surface coating layer is a planar structure covering the surface of the upper surface of the LED plastic bracket 1, which is half the wavelength of a single light.

[0019] During installation, the LED plastic bracket 2 is mounted on the LED metal bracket 1, and the LED light source element is mounted inside the receiving space 6 formed by the LED metal bracket 1 and the LED plastic bracket 2. The fluorescent adhesive 7 is applied to the upper part of the receiving space 6 formed by the LED metal bracket 1 and the LED plastic bracket 2.

[0020] An LED metal bracket 1, an LED plastic bracket 2, and fluorescent adhesive 5 form a housing space. A gold wire 3 connects the LED chip 4 to the LED metal bracket 1, forming a light-emitting circuit. This circuit drives the LED chip 4 to emit blue light. Utilizing the principle of constructive interference of reflected light, a reflective film 8, composed of multiple surface coating layers, located on the upper surface of the LED plastic bracket 2, reflects the emitted harmful blue light in the 415-455nm range back into the LED chip. This reduces the amount of harmful blue light transmitted in the 415-455nm range and increases the reflected light, effectively reducing the harmful blue light emitted from the white light emitted by the LED chip. By avoiding the harmful blue light wavelength, this circuit prevents users who stare at the display screen for extended periods from being harmed by blue light.

[0021] The reflective film 8 described in this case can block the emission of harmful blue light in the 415-455nm range, reflecting the harmful blue light back into the LED chip, thereby reducing the emission of harmful blue light in the white light of the LED chip. The reflective film 8 is mainly composed of materials such as titanium dioxide, silicon dioxide, and magnesium oxide. Utilizing the principle of constructive interference of reflected light, by coating multiple layers on the surface of the LED chip, the amount of harmful blue light transmitted in the 415-455nm range is reduced and the reflected light is increased. This reflective film 8 can have 1 to 100 layers, with each layer of reflective film 8 having a thickness of 1 / 2 of a single wavelength, thus playing a role in enhancing reflection.

[0022] In this embodiment, the surface coating layer is electroplated onto the light-emitting surface of the LED bead in a planar structure. The thickness of the surface coating is half the thickness of a single wavelength, specifically within the range of 200nm-235nm. The titanium dioxide, silicon dioxide, and magnesium oxide materials described in this embodiment are mixed to form a liquid material, which is then electroplated onto the light-emitting surface of the LED bead using ion plating, resulting in a thick film on the surface, which is the surface coating layer. In a vacuum environment, the titanium dioxide, silicon dioxide, and magnesium oxide materials ionize into ions, and under the influence of an electric field, the ions are added to and deposited onto the surface of the LED bead.

[0023] The preferred embodiments of this utility model have been described above with reference to the accompanying drawings, but this does not limit the scope of the utility model. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and essence of this utility model should be within the scope of the utility model.

Claims

1. A low blue light LED chip device, comprising an LED metal bracket, an LED plastic bracket mounted on the LED metal bracket, and gold wire; characterized in that: The housing space formed by the LED metal bracket and the LED plastic bracket is equipped with an LED light source element that can emit white light. The LED light source element includes an LED chip that is fixedly soldered inside the housing space formed by the LED metal bracket and the LED plastic bracket, and two gold wires. One end of each gold wire is soldered to the LED metal bracket, and the other end of the gold wire is soldered to the LED chip. The upper surface of the LED plastic bracket is provided with a reflective film for blocking the emission of harmful blue light; the reflective film is composed of multiple surface coating layers. Fluorescent adhesive is laid on the top and around the LED light source element; the fluorescent adhesive is laid on the upper part of the receiving space formed by the LED metal bracket and the LED plastic bracket, and the fluorescent adhesive wraps several gold wires, blue LED chips and purple LED chips in a closed space; the bottom of the LED metal bracket is provided with metal fixing holes for fixed connection.

Images